US20060042419A1 - Pattern cutter, its processing methods and moulds - Google Patents
Pattern cutter, its processing methods and moulds Download PDFInfo
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- US20060042419A1 US20060042419A1 US11/182,915 US18291505A US2006042419A1 US 20060042419 A1 US20060042419 A1 US 20060042419A1 US 18291505 A US18291505 A US 18291505A US 2006042419 A1 US2006042419 A1 US 2006042419A1
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- Prior art keywords
- blade
- mould
- forming cavity
- base
- die
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/40—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools
- B23P15/406—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools rotary or plane die cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/10—Hand or foot actuated means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D2007/2607—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member for mounting die cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4436—Materials or surface treatments therefore
Definitions
- the present invention relates to the pattern cutting technique and, more particularly, to a pattern cutter, its processing methods and moulds.
- the traditional paper-cutting handicrafts are a kind of work of art gaining immense popular favor. With a large variety of designs or patterns and high value of artistic appreciation, the paper-cutting handicrafts are very suitable to the kindergarten education of children. Abroad, these kind of paper-cutting products are widely used for children education. In the United States, for example, the paper-cutting products are very popularized.
- the paper, plastic pieces, rubber pieces or similar materials are generally cut into letters, cartoon, animals or human-shaped patterns for cultivation of children's cognitive ability and discrimination. But, the production efficiency is relatively low by using traditional hand paper-cutting method to make paper-cutting patterns, with a poor consistency in designs, hence it is not suitable for mass production.
- a process has' been adopted to suit the mass production, i.e. firstly machining a pattern cutter for pattern cutting purpose.
- This pattern cutter is designed to work in such a way that the thin blade with a sharp cutting edge is bent to the pattern to be processed and it is embedded and fixed into a flat plate. Then, this pattern cutter is used to cut paper or similar flat sheet material.
- the material that is cut has an individual artistic pattern identical to that of the thin cutting blade, i.e. the products that are required. If the products of different shapes are to be made, what to do is only to change the pattern cutter with different shapes. In producing such pattern cutter, the thin cutting blade needs to be bent to pattern shape that is required.
- the object of the present invention is to solve those problems occurring in the prior art and provide a pattern cutter that is simple and rational in construction, easy to produce and convenient to use, low in manufacturing cost and good in product consistency.
- Another object of the present invention is to provide a technological method for processing the aforesaid pattern cutter.
- Still another object of the present invention is to provide a forming mould, which can materialize the aforesaid processing method.
- This pattern cutter includes a base and cutting blade.
- the cutting blade is located on the base.
- the cutting blade forms the pattern shape to be cut.
- the said base and cutting blade are of one-piece structure and machined into shape at one go through die-casting process.
- the height of the said cutting blade is greater than or equal to 2.5 mm.
- the angle of the cutting edge of the said blade is smaller than or equal to 60°.
- the cross sectional shape of the said blade is of triangle or combination of triangle and rectangle or combination of triangle and trapezoid.
- the surface of the said base is in parallel with the face of cutting blade, and both of them can be either plane or arc curved surface.
- the holding legs are integrally made on the said base at the other side opposite to the surface where the cutting blade is located.
- the said holding legs are used for connection with other fittings or allow an operator to directly hand hold the pattern cutter in operation.
- a technological process to form the aforesaid pattern cutter wherein the features are that a mould is directly utilized to die cast the base and blade which are joined together.
- the said cutting blade forms the pattern shape that requires to be cut.
- the said technological process can include the following concrete procedures: (1) Machine the die casting mould according to the shape of the required product; (2) Place the die casting mould on the die-casting machine, and use the die-casting machine to fill the alloy solution into the cavity of die-casting mould. Take out the die casting product after it is cooled and formed; (3) Conduct surface hardening treatment to the die casting product.
- the object of the said surface hardening treatment is to raise the hardness of cutting blade of pattern cutter and extend its operating life.
- the surface of the die casting blade is plated with a metal material of higher hardness, e.g. chromium, nickel, zinc, etc.
- a metal material of higher hardness e.g. chromium, nickel, zinc, etc.
- the technological conditions are as follows: the concentration-of chromium solution is 150 ⁇ 250 g/L, operating temperature is generally 50 ⁇ 60° C. and current density is generally 40 ⁇ 60 A/dm 2 .
- the hardness of die casting blade can generally be raised from around HRC10 to HRC30 and above.
- the said alloy comprises the aluminum alloy, zinc alloy or other alloys, with the preference of zinc alloy.
- the die casting mould has a blade-forming cavity, which is of triangle or combination of triangle and rectangle or combination of triangle and trapezoid.
- the depth of blade-forming cavity is greater than or equal to 2.5 mm, with an included angle at its sharp end being smaller than or equal to 60°.
- the sharp wall of the said blade-forming cavity can be formed either by combination of two mould pieces or through the machining on either of moulds.
- the blade-forming cavity should have a vent hole, which is used to discharge air when the alloy solution is filled into the cavity so as to avoid producing any air-trapped die casting product or any such item as produced due to insufficient solution in the cavity.
- the cover die or ejector die of the said die-casting mould is joined together with a replaceable core piece.
- the said core piece is drilled with a hole for fitting an insert block.
- On the end face-of the insert block is machined a blade-forming-groove corresponding to the blade shape of pattern cutter.
- the present invention has the following advantageous effects.
- Simple and rational construction This pattern cutter comprises a base and cutting blade of one-piece structure.
- the construction has been further simplified, whereas the existing pattern cutter that needs the base and cutting blade to be machined separately, then embedded and assembled. And as compared with the prior art, it is more rational and there will be no such accidents that the blade breaks loose from the base due to improper installation. So, it is safer in operation.
- Easy to make and low in cost The present invention utilizes die-casting process to produce pattern cutter, with a high production rate. Generally the output is 240 pieces per hour per unit. The use of the present invention can greatly increase work efficiency, reduce product cost and improve economy efficiency. (3) High product accuracy and good consistency.
- the present invention adopts a mould in production. So long as the machining accuracy of the mould and corresponding production conditions are guaranteed, the products that are turned out can have rather high processing quality, with less product errors and good consistency. (4) Good adaptability.
- the pattern cutters for cutting the different shapes of patterns can be formed only by changing the shape of core seat in the mould, with a wide range of adaptability.
- FIG. 1 is the schematic view showing the construction of pattern cutter of the present invention.
- FIG. 2 is the schematic view showing the back construction of the pattern cutter as shown in FIG. 1 .
- FIG. 3 is the schematic view showing the construction of the die casting mould for forming the pattern cutter as shown in FIG. 1 .
- FIG. 4 is the schematic view showing the construction of the A core piece of the die casting mould as shown in FIG. 3 .
- FIG. 5 is the top view of A core piece as shown in FIG. 4 .
- FIG. 6 is the schematic view showing another construction of the pattern cutter of the present invention.
- FIG. 1 and FIG. 2 show the concrete construction of the pattern cutter of the present invention.
- the pattern cutter is composed of the base 1 and cutting blade 2 .
- the base 1 is an arc plate with a certain radian.
- the cutting blade 2 is located on the base 1 , with the surface of its cutting edge being in parallel to that of base 1 (both being of arc curved surface).
- the cutting blade 2 forms a penguin pattern shape to be cut.
- the said base 1 and cutting blade 2 are of one-piece construction.
- the specific cross sectional structure is shown in E-E view of FIG. 1 .
- the cutting blade 2 has a cross sectional shape similar to triangle (the exact shape is the combination of triangle and trapezoid).
- the height of cutting blade 2 is 3 mm on the base 1 .
- the cutting blade 2 has an angle of 30° at the cutting edge.
- the holding legs 3 are integrally made on the said base 1 at the other side opposite to the surface where the cutting blade 2 is located, as shown in FIG. 2 .
- the said holding legs 3 are used for connection with other fittings or for hand held purpose in operation.
- FIG. 3 ?? FIG. 5 show the concrete structure of the die casting mould for processing the aforesaid penguin pattern cutter.
- the die casting mould comprises the ejector die 4 and cover die 5 .
- On the ejector die 4 is fitted a B core piece 6 .
- On the B core piece 6 there are two protruding arc surfaces 6 - 1 , which are symmetrical to each other.
- On the arc surfaces 6 - 1 there are concave holes 6 - 2 for forming the holding legs 3 on the back of pattern cutter.
- On the cover die 5 A core piece 7 is fitted. In the two square throughholes of the A core piece 7 , the identical square insert blocks 8 are fitted respectively.
- each square insert block 8 On one end of each square insert block 8 is machined a blade-forming groove 9 of penguin shape, as shown in FIG. 5 .
- the blade-forming groove 9 close to the edge of square throughhole is mated with that-of the square throughhole of A core piece 7 by means of the insert block 8 , as shown in FIG. 4 .
- the rest of the blade-forming groove 9 is machined to shape on the end face of the insert block 8 separately.
- the whole cross sectional dimensions and shape of the blade-forming groove 9 are the same as the blade that is to be formed.
- the said A core piece 7 is mated with B core piece 6 as to form an integral mould cavity.
- the mould cavity comprises the blade-forming cavity and base cavity which are communicated to each other.
- the push rod 10 is connected to the mould cavity so as to push out the die casting product after it is formed.
- the lateral cavity has also a vent hole used to discharge air when the alloy solution is being filled into the cavity.
- the base cavity is through with the pouring opening 12 by way of pouring passage 11 .
- the said pouring openings 12 are symmetrically arranged on the symmetrical spindles in the central round throughholes of A core piece 7 .
- the said pouring passage 11 is almost of conical construction, which is formed by mating the pouring head piece 13 and C core piece 14 symmetrically arranged via a shaft.
- the die-casting machine pours the 400° C. zinc alloy solution into the cavity of the mould through the pouring opening under the pressure of 25 ⁇ 40 MPa.
- the die casting product can then be taken out after the pressure has been maintained and cooled to shape.
- the die casting piece can be chromium plated.
- the concentration of chromium plating solution is 200 g/L, at the operating temperature of 55° C. and the current density of 50 A/dm 2 .
- the hardness of the blade of pattern cutter can be raised to HRC 30 and above.
- FIG. 6 shows another construction of the pattern cutter as set forth in the present invention.
- this pattern cutter comprises a base 1 and cutting blade 2 .
- the base 1 is a flat plate, with the cutting blade 2 located on the base 1 .
- the surface for the cutting edge of the blade is in parallel to that of the base 1 (both of them being of plane).
- the cutting blade 2 forms the circular pattern shape that is to be cut.
- the said base 1 and the cutting blade 2 are of one-piece structure.
- the specific cross sectional structure is as shown in G-G view of FIG. 6 .
- the cross sectional shape of the cutting blade 2 is of triangle.
- the height of the cutting blade 2 is 4 mm on the base 1 .
- the blade 2 has an angle of 40° at the cutting edge.
- the cutting blade 2 is surfaced with a chromium-plating coat 15 .
- the methods for manufacturing the pattern cutter as set forth in the present working example are the same as those in the working example 1 in addition to the following features.
- the alloy material that is used is the aluminum alloy.
- the cutting blade is surface treated with chromium plating after the die-casting product is taken out from the mould.
- the concentration of chromium plating solution is 250 g/L, the operating temperature is 60° C., and the current density is 60 A/dm2. After chromium plating treatment, the hardness of cutting blade of the pattern cutter is raised to HRC 30 and above.
Abstract
Disclosed here in the present invention is a pattern cutter, including a base and cutting blade. The cutting blade is located on the base. The blade forms the shape of pattern to be cut. The said base and cutting blade are of one-piece structure, which is machined to shape at one go through die-casting process. A method for processing such a pattern cutter, which directly utilizes mould to die cast the base and blade that are joined together. The said cutting blade forms the pattern shape that requires to be cut. A mould that is applied to the aforesaid processing method, inside the mould there is arranged a cavity for blade forming purpose. The said blade-forming cavity is of triangle or combination of triangle and rectangle or combination of triangle and trapezoid. The depth of blade-forming cavity is greater than or equal to 2.5 mm. The included angle at the sharp end of the blade-forming cavity is smaller than or equal to 60°. The present invention is characterized by simple and rational construction, easy to manufacture, low cost, high product accuracy and good consistency, with a wide range of adaptability and better market prospect.
Description
- The present invention relates to the pattern cutting technique and, more particularly, to a pattern cutter, its processing methods and moulds.
- The traditional paper-cutting handicrafts are a kind of work of art gaining immense popular favor. With a large variety of designs or patterns and high value of artistic appreciation, the paper-cutting handicrafts are very suitable to the kindergarten education of children. Abroad, these kind of paper-cutting products are widely used for children education. In the United States, for example, the paper-cutting products are very popularized. The paper, plastic pieces, rubber pieces or similar materials are generally cut into letters, cartoon, animals or human-shaped patterns for cultivation of children's cognitive ability and discrimination. But, the production efficiency is relatively low by using traditional hand paper-cutting method to make paper-cutting patterns, with a poor consistency in designs, hence it is not suitable for mass production. To overcome this deficiency, a process has' been adopted to suit the mass production, i.e. firstly machining a pattern cutter for pattern cutting purpose. This pattern cutter is designed to work in such a way that the thin blade with a sharp cutting edge is bent to the pattern to be processed and it is embedded and fixed into a flat plate. Then, this pattern cutter is used to cut paper or similar flat sheet material. The material that is cut has an individual artistic pattern identical to that of the thin cutting blade, i.e. the products that are required. If the products of different shapes are to be made, what to do is only to change the pattern cutter with different shapes. In producing such pattern cutter, the thin cutting blade needs to be bent to pattern shape that is required. The existing method to form such blades is generally to bend them by hand, leading to extremely low production efficiency and poor processing accuracy. However, by use of the Forming Method and Its Equipment for Pattern Cutting Blade, which is disclosed in China Invention Patent Registration No. 01 127727.0, to machine the cutting blades that are required, the blade forming speed will be greatly increased and production cost reduced. But, the technological process, through which the cutting blades are firstly machined and then assembled to a pattern cutter, will inevitably increase the processing and assembling steps, thereby the required materials and labor cost are still relatively high.
- The object of the present invention is to solve those problems occurring in the prior art and provide a pattern cutter that is simple and rational in construction, easy to produce and convenient to use, low in manufacturing cost and good in product consistency.
- Another object of the present invention is to provide a technological method for processing the aforesaid pattern cutter.
- Still another object of the present invention is to provide a forming mould, which can materialize the aforesaid processing method.
- The objects of the present invention can be accomplished through the following technical solutions. This pattern cutter includes a base and cutting blade. The cutting blade is located on the base. The cutting blade forms the pattern shape to be cut. The said base and cutting blade are of one-piece structure and machined into shape at one go through die-casting process.
- On the base, the height of the said cutting blade is greater than or equal to 2.5 mm. The angle of the cutting edge of the said blade is smaller than or equal to 60°.
- The cross sectional shape of the said blade is of triangle or combination of triangle and rectangle or combination of triangle and trapezoid.
- The surface of the said base is in parallel with the face of cutting blade, and both of them can be either plane or arc curved surface.
- The holding legs are integrally made on the said base at the other side opposite to the surface where the cutting blade is located. The said holding legs are used for connection with other fittings or allow an operator to directly hand hold the pattern cutter in operation.
- A technological process to form the aforesaid pattern cutter, wherein the features are that a mould is directly utilized to die cast the base and blade which are joined together. The said cutting blade forms the pattern shape that requires to be cut.
- The said technological process can include the following concrete procedures: (1) Machine the die casting mould according to the shape of the required product; (2) Place the die casting mould on the die-casting machine, and use the die-casting machine to fill the alloy solution into the cavity of die-casting mould. Take out the die casting product after it is cooled and formed; (3) Conduct surface hardening treatment to the die casting product.
- The object of the said surface hardening treatment is to raise the hardness of cutting blade of pattern cutter and extend its operating life. Specifically, the surface of the die casting blade is plated with a metal material of higher hardness, e.g. chromium, nickel, zinc, etc. For chromium plating, the technological conditions are as follows: the concentration-of chromium solution is 150˜250 g/L, operating temperature is generally 50˜60° C. and current density is generally 40˜60 A/dm2. Through surface hardening treatment, the hardness of die casting blade can generally be raised from around HRC10 to HRC30 and above.
- The said alloy comprises the aluminum alloy, zinc alloy or other alloys, with the preference of zinc alloy.
- In order to achieve the aforesaid process, the die casting mould has a blade-forming cavity, which is of triangle or combination of triangle and rectangle or combination of triangle and trapezoid. The depth of blade-forming cavity is greater than or equal to 2.5 mm, with an included angle at its sharp end being smaller than or equal to 60°.
- The sharp wall of the said blade-forming cavity can be formed either by combination of two mould pieces or through the machining on either of moulds. As to one mould piece, the blade-forming cavity should have a vent hole, which is used to discharge air when the alloy solution is filled into the cavity so as to avoid producing any air-trapped die casting product or any such item as produced due to insufficient solution in the cavity.
- The cover die or ejector die of the said die-casting mould is joined together with a replaceable core piece. The said core piece is drilled with a hole for fitting an insert block. On the end face-of the insert block is machined a blade-forming-groove corresponding to the blade shape of pattern cutter. By use of the mould of this structure, the insert block can be freely changed according to the different processing patterns, having a good adaptability.
- In comparison to the prior art, the present invention has the following advantageous effects. (1) Simple and rational construction. This pattern cutter comprises a base and cutting blade of one-piece structure. The construction has been further simplified, whereas the existing pattern cutter that needs the base and cutting blade to be machined separately, then embedded and assembled. And as compared with the prior art, it is more rational and there will be no such accidents that the blade breaks loose from the base due to improper installation. So, it is safer in operation. (2) Easy to make and low in cost. The present invention utilizes die-casting process to produce pattern cutter, with a high production rate. Generally the output is 240 pieces per hour per unit. The use of the present invention can greatly increase work efficiency, reduce product cost and improve economy efficiency. (3) High product accuracy and good consistency. The present invention adopts a mould in production. So long as the machining accuracy of the mould and corresponding production conditions are guaranteed, the products that are turned out can have rather high processing quality, with less product errors and good consistency. (4) Good adaptability. According to the present invention, the pattern cutters for cutting the different shapes of patterns can be formed only by changing the shape of core seat in the mould, with a wide range of adaptability.
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FIG. 1 is the schematic view showing the construction of pattern cutter of the present invention. -
FIG. 2 is the schematic view showing the back construction of the pattern cutter as shown inFIG. 1 . -
FIG. 3 is the schematic view showing the construction of the die casting mould for forming the pattern cutter as shown inFIG. 1 . -
FIG. 4 is the schematic view showing the construction of the A core piece of the die casting mould as shown inFIG. 3 . -
FIG. 5 is the top view of A core piece as shown inFIG. 4 . -
FIG. 6 is the schematic view showing another construction of the pattern cutter of the present invention; - A detailed description of the present invention is given below in conjunction with the working examples and accompanying drawings, but the implementation modes of the present invention are not limited to those.
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FIG. 1 andFIG. 2 show the concrete construction of the pattern cutter of the present invention. As shown inFIG. 1 , the pattern cutter is composed of thebase 1 andcutting blade 2. Thebase 1 is an arc plate with a certain radian. Thecutting blade 2 is located on thebase 1, with the surface of its cutting edge being in parallel to that of base 1 (both being of arc curved surface). Thecutting blade 2 forms a penguin pattern shape to be cut. The saidbase 1 andcutting blade 2 are of one-piece construction. The specific cross sectional structure is shown in E-E view ofFIG. 1 . Thecutting blade 2 has a cross sectional shape similar to triangle (the exact shape is the combination of triangle and trapezoid). The height of cuttingblade 2 is 3 mm on thebase 1. Thecutting blade 2 has an angle of 30° at the cutting edge. On the surface of cuttingblade 2 there is a platingcoat 15. The holdinglegs 3 are integrally made on the saidbase 1 at the other side opposite to the surface where thecutting blade 2 is located, as shown inFIG. 2 . The said holdinglegs 3 are used for connection with other fittings or for hand held purpose in operation. -
FIG. 3 ˜FIG. 5 show the concrete structure of the die casting mould for processing the aforesaid penguin pattern cutter. As shown inFIG. 3 , the die casting mould comprises the ejector die 4 and cover die 5. On the ejector die 4 is fitted aB core piece 6. On theB core piece 6, there are two protruding arc surfaces 6-1, which are symmetrical to each other. On the arc surfaces 6-1, there are concave holes 6-2 for forming the holdinglegs 3 on the back of pattern cutter. On the cover die 5, A core piece 7 is fitted. In the two square throughholes of the A core piece 7, the identical square insert blocks 8 are fitted respectively. On one end of eachsquare insert block 8 is machined a blade-forming groove 9 of penguin shape, as shown inFIG. 5 . The blade-forming groove 9 close to the edge of square throughhole is mated with that-of the square throughhole of A core piece 7 by means of theinsert block 8, as shown inFIG. 4 . The rest of the blade-forming groove 9 is machined to shape on the end face of theinsert block 8 separately. The whole cross sectional dimensions and shape of the blade-forming groove 9 are the same as the blade that is to be formed. The said A core piece 7 is mated withB core piece 6 as to form an integral mould cavity. The mould cavity comprises the blade-forming cavity and base cavity which are communicated to each other. Thepush rod 10 is connected to the mould cavity so as to push out the die casting product after it is formed. The lateral cavity has also a vent hole used to discharge air when the alloy solution is being filled into the cavity. The base cavity is through with the pouringopening 12 by way of pouring passage 11. The said pouringopenings 12 are symmetrically arranged on the symmetrical spindles in the central round throughholes of A core piece 7. The said pouring passage 11 is almost of conical construction, which is formed by mating the pouringhead piece 13 and C core piece 14 symmetrically arranged via a shaft. The technological processes by using the aforesaid mould to form pattern cutter comprise the following specific procedures. After the mould is assembled, it is installed on the die-casting machine. The die-casting machine pours the 400° C. zinc alloy solution into the cavity of the mould through the pouring opening under the pressure of 25˜40 MPa. The die casting product can then be taken out after the pressure has been maintained and cooled to shape. Then the die casting piece can be chromium plated. The concentration of chromium plating solution is 200 g/L, at the operating temperature of 55° C. and the current density of 50 A/dm2. After chromium plating, the hardness of the blade of pattern cutter can be raised to HRC 30 and above. -
FIG. 6 shows another construction of the pattern cutter as set forth in the present invention. As shown inFIG. 6 , this pattern cutter comprises abase 1 andcutting blade 2. Thebase 1 is a flat plate, with thecutting blade 2 located on thebase 1. The surface for the cutting edge of the blade is in parallel to that of the base 1 (both of them being of plane). Thecutting blade 2 forms the circular pattern shape that is to be cut. The saidbase 1 and thecutting blade 2 are of one-piece structure. The specific cross sectional structure is as shown in G-G view ofFIG. 6 . The cross sectional shape of thecutting blade 2 is of triangle. The height of thecutting blade 2 is 4 mm on thebase 1. Theblade 2 has an angle of 40° at the cutting edge. Thecutting blade 2 is surfaced with a chromium-platingcoat 15. - The methods for manufacturing the pattern cutter as set forth in the present working example are the same as those in the working example 1 in addition to the following features. The alloy material that is used is the aluminum alloy. The cutting blade is surface treated with chromium plating after the die-casting product is taken out from the mould. The concentration of chromium plating solution is 250 g/L, the operating temperature is 60° C., and the current density is 60 A/dm2. After chromium plating treatment, the hardness of cutting blade of the pattern cutter is raised to HRC 30 and above.
Claims (19)
1. A pattern cutter, comprising:
a base; and
a cutting blade where the cutting blade is integrally formed as a one piece structure with the base and the cutting blade forms the shape of the pattern to be cut, said base and cutting blade formed from die-cast metal.
2. The pattern cutter of claim 1 , wherein the height of cutting blade is greater than or equal to 2.5 mm and the cutting edge of the ea blade has an angle of less than or equal to approximately 60°.
3. The pattern cutter of claim 1 , wherein the cross sectional shape of the blade is of at least one of a triangle, a combination of a triangle and a rectangle or combination of a triangle and a trapezoid.
4. The pattern cutter of claim 1 , wherein the surface of the base is in parallel with that of the cutting blade and both of them are of one of a plane or arc curved surface.
5. A method for forming a pattern cutter, comprising:
providing a die-casting machine;
providing a mould having a desired blade forming cavity and a base forming cavity formed therein and in communication with each other;
placing the mould in the die-casting machine;
using the die-casting machine to fill the blade forming cavity and base forming cavity with a metal; and
taking out a pattern cutter after it has formed.
6. The method of claim 5 further comprising forming the mould by machining the desired shape of the blade forming cavity and base forming cavity therein.
7. The method of claim 5 , further comprising, applying a surface hardening treatment to the pattern cutter.
8. The method of claim 5 , wherein the blade-forming cavity has a cross-section which is of triangle or combination of triangle and rectangle or combination of triangle and trapezoid.
9. The method of claim 8 , wherein the blade-forming cavity is formed from at least one of a combination of two mould pieces and machining.
10. The method of claim 8 , at least one of a cover die or ejector die of the die-casting mould is joined together with a replaceable core piece.
11. The pattern cutter of claim 1 , wherein the die-cast metal is comprised of one of a zinc alloy, an aluminum alloy and a metal alloy.
12. The method of claim 7 , wherein said applying the surface hardening treatment includes applying at least one of chromium, nickel and zinc.
13. The method of claim 7 , wherein said applying the surface hardening treatment comprises raising the hardness of a blade of the pattern cutter from approximately HRC10 to at least approximately HRC30.
14. The method of claim 5 , wherein the blade forming cavity is provided with a depth of at least 2.5 mm and an included angle at a sharp end thereof of at approximately 60 degrees or less.
15. The method of claim 10 , further comprising drilling the core piece with a hole for fitting an insert block where an end face of the insert block is provided with a blade-forming groove corresponding to the shape of the blade of the pattern cutter.
16. A mould for forming a pattern cutter, comprising:
a mould having a desired blade-forming cavity and a base-forming cavity formed therein and in communication with each other;
the blade-forming cavity having a cross-section which is of triangle or combination of triangle and rectangle or combination of triangle and trapezoid; and
the blade-forming cavity having a depth of at least 2.5 mm with an included angle at its sharp end smaller than at least about 60°.
17. The mould of claim 16 , wherein the blade-forming cavity is formed from at least one of a combination of two mould pieces and machining.
18. The mould of claim 16 , wherein at least one of a cover die or ejector die of the mould is joined together with a replaceable core piece.
19. The method of claim 18 , wherein the core piece has a hole for fitting an insert block where an end face of the insert block is provided with a blade-forming groove corresponding to the shape of the blade of a pattern cutter.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200410028111.X | 2004-07-16 | ||
CNB200410028111XA CN100371178C (en) | 2004-07-16 | 2004-07-16 | Pattern cutting equipment, manufacturing method and mould thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060042419A1 true US20060042419A1 (en) | 2006-03-02 |
Family
ID=34664149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/182,915 Abandoned US20060042419A1 (en) | 2004-07-16 | 2005-07-15 | Pattern cutter, its processing methods and moulds |
Country Status (9)
Country | Link |
---|---|
US (1) | US20060042419A1 (en) |
EP (1) | EP1782898A4 (en) |
JP (1) | JP2008506538A (en) |
CN (1) | CN100371178C (en) |
AU (1) | AU2005263272A1 (en) |
BR (1) | BRPI0513387A (en) |
CA (1) | CA2573087A1 (en) |
NZ (1) | NZ553155A (en) |
WO (1) | WO2006007787A1 (en) |
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US20070186747A1 (en) * | 2005-12-21 | 2007-08-16 | Faye Angevine | Die cutter |
US20120253504A1 (en) * | 2011-03-30 | 2012-10-04 | Brother Kogyo Kabushiki Kaisha | Cutting apparatus, cutting data processing device and cutting control program therefor |
US9874899B2 (en) | 2014-12-02 | 2018-01-23 | Michael Oliveira | Devices and methods for dispensing hand sanitizer |
US20180111282A1 (en) * | 2015-06-24 | 2018-04-26 | Brother Kogyo Kabushiki Kaisha | Cut data generating apparatus, cut data generating method, and non-transitory recording medium storing cut data generating program |
CN114619518A (en) * | 2020-12-11 | 2022-06-14 | 中国科学院大连化学物理研究所 | Self-adaptive die cutting device |
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US20070186747A1 (en) * | 2005-12-21 | 2007-08-16 | Faye Angevine | Die cutter |
US20120253504A1 (en) * | 2011-03-30 | 2012-10-04 | Brother Kogyo Kabushiki Kaisha | Cutting apparatus, cutting data processing device and cutting control program therefor |
US8855802B2 (en) * | 2011-03-30 | 2014-10-07 | Brother Kogyo Kabushiki Kaisha | Cutting apparatus, cutting data processing device and cutting control program therefor |
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US11163329B2 (en) | 2014-12-02 | 2021-11-02 | Michael Oliveira | Devices and methods for dispensing hand sanitizer |
US20180111282A1 (en) * | 2015-06-24 | 2018-04-26 | Brother Kogyo Kabushiki Kaisha | Cut data generating apparatus, cut data generating method, and non-transitory recording medium storing cut data generating program |
CN114619518A (en) * | 2020-12-11 | 2022-06-14 | 中国科学院大连化学物理研究所 | Self-adaptive die cutting device |
Also Published As
Publication number | Publication date |
---|---|
CN1593944A (en) | 2005-03-16 |
JP2008506538A (en) | 2008-03-06 |
EP1782898A4 (en) | 2008-03-05 |
CA2573087A1 (en) | 2006-01-26 |
CN100371178C (en) | 2008-02-27 |
WO2006007787A1 (en) | 2006-01-26 |
BRPI0513387A (en) | 2008-05-06 |
AU2005263272A1 (en) | 2006-01-26 |
NZ553155A (en) | 2010-03-26 |
EP1782898A1 (en) | 2007-05-09 |
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