US20140331735A1 - Spacer for dies - Google Patents
Spacer for dies Download PDFInfo
- Publication number
- US20140331735A1 US20140331735A1 US14/271,795 US201414271795A US2014331735A1 US 20140331735 A1 US20140331735 A1 US 20140331735A1 US 201414271795 A US201414271795 A US 201414271795A US 2014331735 A1 US2014331735 A1 US 2014331735A1
- Authority
- US
- United States
- Prior art keywords
- die
- cylindrical portion
- holder according
- stamping machine
- outside
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/14—Particular arrangements for handling and holding in place complete dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Definitions
- This invention refers to a device for protecting dies or the machines on which the dies are mounted at times when the dies are not being used.
- stamping machine 100 is shown, with item 101 indicating the lower portion of the die or column and item 102 indicating the upper portion, which we shall refer to as the “die”; when machine 100 is inactive, said items 101 and 102 are separated from each other by a certain distance “t”.
- solid or partially blocks 104 are normally made and used, as seen in FIG. 2 , and are simply placed between the die and its column so as to occupy said distance “t” and thus block said items at a preset distance.
- said solid blocks 103 may be similarly shaped like cylindrical bushings which match both said items 101 and 102 .
- FIG. 1 shows a schematic side view of one die according to the prior art, which can use the present invention
- FIG. 2 shows the die of FIG. 1 , to which a spacer according to the prior art has been added
- FIGS. 3 and 4 show perspective views from two different observation points, respectively, of a spacer according to the invention
- FIG. 5 shows the die of FIG. 1 , to which a spacer according to the prior art has been added
- FIGS. 6A and 6B show partial transparencies of a schematic starting condition and a working condition, respectively, of a spacer according to the invention
- FIGS. 7A and 7B show two flat vertical middle cross-sections of two corresponding installation and operation examples of a spacer according to the invention
- FIG. 8 shows an exploded view of an improved variant of the spacer according to the invention
- FIG. 8A shows the spacer of FIG. 8 in an “exploded” view, but with a flat middle cross-section passing through center axis “X” of the spacer in FIG. 8 ,
- FIG. 8B shows a middle cross-section of the spacer of the previous figure in the finished condition ready for use
- FIGS. 9A and 9B show two perspective views from two different observation points of an improved accessory of a spacer according to the invention
- FIG. 9C shows a perspective view of the accessory in FIGS. 9A and 9B after the accessory has been mounted on a spacer according to the invention
- FIGS. 10A , 10 B, and 10 C show perspective views of three subsequent operating states of the accessory in FIGS. 9A , 9 B, and 9 C, respectively ( FIG. 10B shows an intermediate transition position),
- FIGS. 11A and 118 show perspective and schematic views, respectively, of the spacer in FIGS. 10A and 10C .
- an improved spacer consists of a single body that comprises two cylindrical portions firmly connected to each other by means of a corresponding base, in which in particular:
- FIGS. 6A , 6 B, and 7 A, 7 B This feature is clarified by observing FIGS. 6A , 6 B, and 7 A, 7 B; indeed, if die 102 is to be spaced safely from corresponding column 101 , a portion of the spacer needs to be able to be coupled to the corresponding item without any risk of slipping out or being ejected; this goal is achieved if one of said cylindrical portions can be engaged by dovetailing like a cap on the outer surface of the other item to be spaced away.
- outside diameter “D” of first hollow portion 1 is necessarily greater than outside diameter “d” of second cylindrical portion 4 .
- first and second cylindrical portions 1 and 4 and said inside recess 2 are coaxial with respect to the same axis “X”.
- said internal recess 2 in reference to FIGS. 8 , 8 A, and 8 B, can be used to insert an elastic damping means 5 , particularly a cylindrical damper made of elastomeric material, which protrudes from the outer edge of said recess 2 by length “s”.
- a cylindrical cup element 6 which is therefore hollow, is placed above the assembly consisting of said elastic means 5 and said first portion 1 , arranged outside and above said elastic means 5 and outside said first cylindrical portion 1 .
- said cup element is advantageously provided with a ring-shaped edge 8 firmly secured to a corresponding ring-shaped portion of said solid base 3 of the first cylindrical portion 1 .
- said cup element 6 is engaged securely above said first portion 1 due to the opposing actions between said elastic means 5 and the reaction force of said ring-shaped edge 8 against said solid base 3 .
- FIGS. 9A , 9 B, 9 C, 10 A, 10 B, 10 C, 11 A, and 11 B A useful accessory of the spacer according to the invention is shown in FIGS. 9A , 9 B, 9 C, 10 A, 10 B, 10 C, 11 A, and 11 B; this accessory aims to overcome the drawback of having to remove and store the spacer of the invention somewhere after it has been used, and to find and reinstall it afterward; these work steps can be eliminated completely by providing the spacer of the invention with a useful accessory making it quick and easy to remove the spacer from its working portion while the stamping machine is operating, but which keeps it connected to a part of the machine, be it the die or column, so that it can be reinstalled in its working position (when the machine is stopped) in an equally quick and easy manner.
- a holding element is made and equipped:
- Said second part 11 can in turn be equipped with attachment devices, preferably through-elements such as bolts, pins, or the like, not explicitly shown, which are inserted into appropriate through-holes 13 made in said second part 11 , which may be made directly from a simple plate.
- attachment devices preferably through-elements such as bolts, pins, or the like, not explicitly shown, which are inserted into appropriate through-holes 13 made in said second part 11 , which may be made directly from a simple plate.
- said first ring-shaped part 10 is advantageously made like a flexible jaw so that it can adapt to and clamp to different sized spacers and lock onto them so as not to be removable; consequently, said first ring-shaped part 10 is made like a ring that is radially open by a transverse slot 15 , which can be clamped by a suitable clamping device, typically a bolt 14 , by known design and construction features.
- first portion and the second portion are made as a single piece by means of a known thermoplastic-material injection process.
- the preferred plastic material has been determined advantageously to include semi-crystalline polyamides or polymers.
- thermoplastic material has a very high hardness and strength
Abstract
A die holder and spacer including a first cylindrical portion equipped with an inside recess and a solid base and a second cylindrical portion that is at least partially solid and is attached to the solid base of and outside the first portion, said portions being coaxial. In a variant, an elastic damping device is attached to the inside of the inside recess and protrudes therefrom, and a cup element is placed outside and above the elastic device and outside the first cylindrical portion; the cup element is provided with a ring-shaped edge firmly secured to a corresponding ring-shaped portion of the solid base of the first cylindrical portion. The first and second cylindrical portions are made as a single part by a thermoplastic-material injection process. In an improved embodiment, the material includes semi-crystaline polyamides or polymers and preferably includes fiberglass reinforcement.
Description
- This invention refers to a device for protecting dies or the machines on which the dies are mounted at times when the dies are not being used.
- In the field of machines which use dies or on which dies are mounted, it is a known fact that when the dies are not being used, they may be a source of some typical problems involving either safety, the integrity of the dies, or even the machines.
- In
FIG. 1 ,stamping machine 100 is shown, withitem 101 indicating the lower portion of the die or column anditem 102 indicating the upper portion, which we shall refer to as the “die”; whenmachine 100 is inactive, saiditems -
- An initial cause of safety problems is the fact that, when the machine is not active, said dies 101 and said
columns 102, which oppose each other and should be safely secured, can inadvertently come closer to each other and even close during maintenance; if an operator's hand is accidentally placed between these items, there is obviously a real risk that the operator's hand will be trapped and crushed; - A second cause of problems has to do with the fact that when the machine or just the assemblies consisting of a die and its column are being moved, these items can come loose or vibrate or may come into potentially hazardous contact with each other; not only can these items splatter shards outward, in which case they will surely be damaged, there will also be an inevitable economic loss given their generally high cost;
- A third possibility results from the fact that, when the machine is inactive, said die and column items must be kept at a certain precise distance for various technical reasons, such as for calibrating the machine.
- An initial cause of safety problems is the fact that, when the machine is not active, said dies 101 and said
- In order to overcome these drawbacks, solid or partially
blocks 104 are normally made and used, as seen inFIG. 2 , and are simply placed between the die and its column so as to occupy said distance “t” and thus block said items at a preset distance. - In particular, when the shape of said items, i.e. the die and column, is cylindrical, said solid blocks 103 may be similarly shaped like cylindrical bushings which match both said
items - This very empirical solution, however, has some drawbacks which are specifically:
-
- first and foremost, blocks 103 are made by turning metal rods; turning work is normally known to be costly and therefore not very efficient at making parts serving a very simple purpose, such as that of a “shim”;
- in addition, said blocks 103 have the same diameter and therefore cannot be securely adapted to parts with different diameters, given that they can slip laterally for any reason whatsoever;
- thirdly, said blocks are rigid and therefore do not allow for even the slightest movement between the die and column, which, due to an obvious reaction, causes an undesirable mechanical stress between the components of the machine on which said dies and corresponding columns are mounted.
- It would therefore be desirable to make a die spacer that can substantially limit the above drawbacks, which is the main purpose of this invention.
- This purpose, along with other purposes which will be more clearly specified below, are achieved by a die spacer made and operating according to the enclosed claims.
- The features and advantages of the invention will become clear from the following description, given as a non-limiting example, in reference to the enclosed drawings in which:
-
FIG. 1 shows a schematic side view of one die according to the prior art, which can use the present invention, -
FIG. 2 shows the die ofFIG. 1 , to which a spacer according to the prior art has been added, -
FIGS. 3 and 4 show perspective views from two different observation points, respectively, of a spacer according to the invention, -
FIG. 5 shows the die ofFIG. 1 , to which a spacer according to the prior art has been added, -
FIGS. 6A and 6B show partial transparencies of a schematic starting condition and a working condition, respectively, of a spacer according to the invention, -
FIGS. 7A and 7B show two flat vertical middle cross-sections of two corresponding installation and operation examples of a spacer according to the invention, -
FIG. 8 shows an exploded view of an improved variant of the spacer according to the invention, -
FIG. 8A shows the spacer ofFIG. 8 in an “exploded” view, but with a flat middle cross-section passing through center axis “X” of the spacer inFIG. 8 , -
FIG. 8B shows a middle cross-section of the spacer of the previous figure in the finished condition ready for use, -
FIGS. 9A and 9B show two perspective views from two different observation points of an improved accessory of a spacer according to the invention, -
FIG. 9C shows a perspective view of the accessory inFIGS. 9A and 9B after the accessory has been mounted on a spacer according to the invention, -
FIGS. 10A , 10B, and 10C show perspective views of three subsequent operating states of the accessory inFIGS. 9A , 9B, and 9C, respectively (FIG. 10B shows an intermediate transition position), -
FIGS. 11A and 118 show perspective and schematic views, respectively, of the spacer inFIGS. 10A and 10C . - In reference to
FIGS. 3 , 4, and 5, an improved spacer according to the invention consists of a single body that comprises two cylindrical portions firmly connected to each other by means of a corresponding base, in which in particular: -
- a first
cylindrical portion 1 has an internal cylindrical recess 2 open to the outside at one base, the opposite base 3 of which is solid, - a second
cylindrical portion 4, at least partially solid, firmly connected to the outside of solid base 3 offirst portion 1.
As shown in the figures, inside diameter “D” offirst portion 1 is greater than outside diameter “d” ofsecond portion 4.
- a first
- This feature is clarified by observing
FIGS. 6A , 6B, and 7A, 7B; indeed, if die 102 is to be spaced safely fromcorresponding column 101, a portion of the spacer needs to be able to be coupled to the corresponding item without any risk of slipping out or being ejected; this goal is achieved if one of said cylindrical portions can be engaged by dovetailing like a cap on the outer surface of the other item to be spaced away. - But this condition is normally achievable if the portion that caps the corresponding item (die or column) has a recess with substantially the same dimensions so as to easily fit with said item, be it a die or column.
- Consequently, since said recess is defined by a cylindrical wall and said wall obviously cannot have a zero thickness, and (see
FIGS. 6A , 6B) since saidcylindrical portion 4 is inserted into insidecylindrical part 101A ofcolumn 101, which normally has the same width as die 102, outside diameter “D” of firsthollow portion 1 is necessarily greater than outside diameter “d” of secondcylindrical portion 4. - In addition, as can be seen in these same figures, and for obvious design and functional reasons, it is also appropriate for said first and second
cylindrical portions - The main solution just described allows for numerous beneficial improvements which solve some problems which may remain unsolved by the invention described above.
- One of these problems consists of the fact that, even though said spacer improves the technique for protecting dies, it may be that said dies, although joined to each other, need to be connected in a non-rigid way so as not to subject the rest of the machine to excessive streeses.
- To overcome this drawback, said internal recess 2, in reference to
FIGS. 8 , 8A, and 8B, can be used to insert an elastic damping means 5, particularly a cylindrical damper made of elastomeric material, which protrudes from the outer edge of said recess 2 by length “s”. - A cylindrical cup element 6, which is therefore hollow, is placed above the assembly consisting of said
elastic means 5 and saidfirst portion 1, arranged outside and above saidelastic means 5 and outside said firstcylindrical portion 1. - In practice, an expert skilled in the art will understand that a shock-absorbing or damping element which can elastically absorb impacts or any vibrations between the die and the corresponding column, is thus made.
- In addition, said cup element is advantageously provided with a ring-
shaped edge 8 firmly secured to a corresponding ring-shaped portion of said solid base 3 of the firstcylindrical portion 1. - In essence, said cup element 6 is engaged securely above said
first portion 1 due to the opposing actions between saidelastic means 5 and the reaction force of said ring-shaped edge 8 against said solid base 3. - A useful accessory of the spacer according to the invention is shown in
FIGS. 9A , 9B, 9C, 10A, 10B, 10C, 11A, and 11B; this accessory aims to overcome the drawback of having to remove and store the spacer of the invention somewhere after it has been used, and to find and reinstall it afterward; these work steps can be eliminated completely by providing the spacer of the invention with a useful accessory making it quick and easy to remove the spacer from its working portion while the stamping machine is operating, but which keeps it connected to a part of the machine, be it the die or column, so that it can be reinstalled in its working position (when the machine is stopped) in an equally quick and easy manner. - To that end, a holding element is made and equipped:
-
- with a first ring-
shaped part 10 which can be secured firmly to the outer cylindrical surface of said second cylindrical portion 2, - and a
second part 11 designed so as to be secured against one of said elements, be it the die or column, and into which said first ring-shaped part 10 is engaged by rotation, preferably by means ofhinge 12 on an outer edge of said first ring-shaped part 10.
- with a first ring-
- Said
second part 11 can in turn be equipped with attachment devices, preferably through-elements such as bolts, pins, or the like, not explicitly shown, which are inserted into appropriate through-holes 13 made in saidsecond part 11, which may be made directly from a simple plate. - The operation of said attachment element consists primarily in:
-
- placing said
second part 11 on an edge of the die or column, as shown schematically inFIGS. 10A and 10B , by means of said bolts which pass through said through-holes 13 and which engage with the die (or column), - and then, while making the first ring-shaped
part 11 rotate on saidhinge 12, said first ring-shaped part is put in the desired position so that the spacer of the invention is placed in the working position, then alternatively: - inserted between the die and column, as shown symbolically in
FIG. 10A , - or removed from said working position by rotating
hinge 12 180° when the corresponding stamping machine is working.
- placing said
- In addition, said first ring-shaped
part 10 is advantageously made like a flexible jaw so that it can adapt to and clamp to different sized spacers and lock onto them so as not to be removable; consequently, said first ring-shapedpart 10 is made like a ring that is radially open by atransverse slot 15, which can be clamped by a suitable clamping device, typically abolt 14, by known design and construction features. - Lastly, in order for said spacer to be made in an economically sustainable and industrially practical way, it is appropriate for the first portion and the second portion to be made as a single piece by means of a known thermoplastic-material injection process.
- The preferred plastic material has been determined advantageously to include semi-crystalline polyamides or polymers.
- In particular, in order to ensure that the thermoplastic material has a very high hardness and strength, it is particularly useful to add a fiberglass reinforcement component of at least 20% by weight to said plastic material.
- It has been found that a perfectly suitable material for this purpose is available on the market under the trade name “Greenamid PA6 (GF30).”
Claims (10)
1. A spacing holder for dies or stamping machines which can constitute a means of spacing apart two opposing parts of said die, wherein it includes:
a first cylindrical portion equipped with:
an inside recess open to the outside at one base,
with the opposite base thereof being solid,
a second cylindrical portion, at least partially solid, attached securely to and outside said solid base, with an outside diameter that is less than the outside diamter of said first portion;
wherein said first and second cylindrical portions and said inside recess are coaxial.
2. A die or stamping machine holder according to claim 1 , wherein it includes:
an elastic damping means attached inside said inside recess and protruding therefrom,
a cup element placed outside and above said elastic means and outside said first cylindrical portion.
3. A die or stamping machine holder according to claim 2 , wherein said cup element is provided with a ring-shaped edge attached securely to a corresponding ring-shaped portion of said solid base of said first cylindrical portion.
4. A die or stamping machine holder according to claim 1 , wherein it includes a grasping element equipped:
with a first ring-shaped part which can be secured firmly to the outside of said second cylindrical portion,
and a second part attached by rotating means to an outer edge of said first ring-shaped part.
5. A die or stamping machine holder according to claim 4 , wherein said means of rotation includes a hinge.
6. A die or stamping machine holder according to claim 4 , wherein said second part is equipped with grasping devices.
7. A die or stamping machine holder according to claim 4 , wherein said first ring-shaped part is equipped with a device for clamping or locking to the outer surface of said second cylindrical portion.
8. A die or stamping machine holder according to claim 1 , wherein said first cylindrical portion and said second cylindrical portion are made as a single part by means of a thermoplastic-material injection process.
9. A die or stamping machine holder according to claim 9 , wherein said thermoplastic material includes semi-crystalline polyamides or polymers.
10. A die or stamping machine holder according to claim claim 9 , wherein said material includes fiberglass reinforcement of at least 20% by weight.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000021U ITPN20130021U1 (en) | 2013-05-07 | 2013-05-07 | PERFECTED SPACER FOR MOLDS |
ITPN2013U000021 | 2013-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140331735A1 true US20140331735A1 (en) | 2014-11-13 |
Family
ID=49486189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/271,795 Abandoned US20140331735A1 (en) | 2013-05-07 | 2014-05-07 | Spacer for dies |
Country Status (3)
Country | Link |
---|---|
US (1) | US20140331735A1 (en) |
DE (1) | DE202014101997U1 (en) |
IT (1) | ITPN20130021U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10449745B2 (en) | 2015-04-10 | 2019-10-22 | Toyota Motor Engineering & Manufacturing North America, Inc. | Manufacturing die spacing devices |
FR3103410A1 (en) * | 2019-11-25 | 2021-05-28 | Psa Automobiles Sa | Press kit with swivel cushioning element |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020118663B4 (en) | 2020-07-15 | 2022-02-17 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Spacer device and setup method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2320240A (en) * | 1940-12-23 | 1943-05-25 | Janiszewski Kasimir | Die set assembly |
US3855920A (en) * | 1973-11-02 | 1974-12-24 | Carlson Dimond & Wright Inc | Adjustable safety die block-radial lobe design |
US4377084A (en) * | 1980-12-29 | 1983-03-22 | The Stolle Corporation | Press apparatus having resilient stop blocks |
US6041685A (en) * | 1998-06-23 | 2000-03-28 | Preco Industries, Inc. | Impact micrometer |
US6360643B2 (en) * | 1996-08-13 | 2002-03-26 | Littell International, Inc. | Blade assembly for shear |
US9279283B2 (en) * | 2010-07-16 | 2016-03-08 | Ged Integrated Solutions, Inc. | Automated spacer frame fabrication |
-
2013
- 2013-05-07 IT IT000021U patent/ITPN20130021U1/en unknown
-
2014
- 2014-04-29 DE DE202014101997.9U patent/DE202014101997U1/en active Active
- 2014-05-07 US US14/271,795 patent/US20140331735A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2320240A (en) * | 1940-12-23 | 1943-05-25 | Janiszewski Kasimir | Die set assembly |
US3855920A (en) * | 1973-11-02 | 1974-12-24 | Carlson Dimond & Wright Inc | Adjustable safety die block-radial lobe design |
US4377084A (en) * | 1980-12-29 | 1983-03-22 | The Stolle Corporation | Press apparatus having resilient stop blocks |
US6360643B2 (en) * | 1996-08-13 | 2002-03-26 | Littell International, Inc. | Blade assembly for shear |
US6041685A (en) * | 1998-06-23 | 2000-03-28 | Preco Industries, Inc. | Impact micrometer |
US9279283B2 (en) * | 2010-07-16 | 2016-03-08 | Ged Integrated Solutions, Inc. | Automated spacer frame fabrication |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10449745B2 (en) | 2015-04-10 | 2019-10-22 | Toyota Motor Engineering & Manufacturing North America, Inc. | Manufacturing die spacing devices |
FR3103410A1 (en) * | 2019-11-25 | 2021-05-28 | Psa Automobiles Sa | Press kit with swivel cushioning element |
Also Published As
Publication number | Publication date |
---|---|
ITPN20130021U1 (en) | 2014-11-08 |
DE202014101997U1 (en) | 2014-06-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |