CN103419316B - Transfer molding device and the rubber product manufacture method using this device - Google Patents
Transfer molding device and the rubber product manufacture method using this device Download PDFInfo
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- CN103419316B CN103419316B CN201210544498.9A CN201210544498A CN103419316B CN 103419316 B CN103419316 B CN 103419316B CN 201210544498 A CN201210544498 A CN 201210544498A CN 103419316 B CN103419316 B CN 103419316B
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- mould
- transfer molding
- benzvalene form
- pressing plate
- removable tray
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides transfer molding device and the rubber product manufacture method using this device, the cast gate of products formed can be suppressed to remain, and can efficiently carry out the removable tray mould of transfer molding mould to separate with benzvalene form mould.Transfer molding device possesses transfer molding mould and separative element.Transfer molding mould possesses benzvalene form mould and removable tray mould.Benzvalene form mould possesses：There is the die main body of die cavity；The pelvic part that moulding material puts into；And the hand-hole of described die cavity is led to from this pelvic part.Removable tray mould extrudes the moulding material in pelvic part by declining, thus this moulding material is injected into die cavity.Separative element possesses pressing plate, and this pressing plate is advanced towards benzvalene form die horizontal from position of readiness, and is abutted in the way of linear contact lay with the upper surface of benzvalene form mould in progressive position.
Description
Technical field
The present invention relates to the cast gate of products formed can be suppressed to remain, and can efficiently carry out in transfer molding mould
Removable tray mould and benzvalene form（pot）The detached transfer molding device of mould, and the manufacture of the rubber product using this device
Method.
Background technology
As the manufacture method of the rubber products such as rubber rollers, transfer molding is widely known by the people（Referring for example to patent documentation 1.）.
As Fig. 6（A）It is schematically shown, the mould a used in this transfer molding includes the die main body with the die cavity b of molding
C, be placed in order this die main body c top benzvalene form mould d and removable tray mould e.
It is provided with described benzvalene form mould d：The pelvic part putting in the recessed moulding material of the upper surface of this benzvalene form mould d
d1；And the hand-hole d2 of described die cavity b is led to from this pelvic part d1.And, the lower surface in described removable tray mould e, projects
There is plunger portion e1 inserting described pelvic part d1.Described removable tray mould e lifting platform in stamping machine via pressing plate f（Not shown）
It is supported to lift, and, die main body c is supported on the fixed station of stamping machine via pressing plate f（Not shown）.Then,
As Fig. 6（B）Shown, so that described removable tray mould e is declined using stamping machine, thus to the forming material put in described pelvic part d1
Material G is extruded so as to be injected in die cavity b via described hand-hole d2, thus being shaped to rubber product W.
In addition, after molding, in order to take out rubber product W it is necessary first to only making described removable tray mould e rise and making
It is separated with benzvalene form mould d, such as Fig. 6（C）Shown, use pressing plate h1 as separative element h.Make this pressing using cylinder h2
Plate h1 advances, and so that it is abutted with the upper surface ds of benzvalene form mould d, thus prevents benzvalene form mould d from becoming with removable tray mould e adhesion
Integrally together rise, so that removable tray mould e is separated with benzvalene form mould d.
However, as Fig. 6（D）Shown, when described removable tray mould e is risen and is separated with benzvalene form mould d, the rubber of inside
Product W rises and expands because of the releasing of compression, temperature, thus jack-up benzvalene form mould d.Therefore, benzvalene form mould d and pressing plate h1 it
Between resistance increase, power produced by cylinder h2 become not enough it is impossible to make pressing plate h1 back to position of readiness.
Therefore, in the past as Fig. 7（A）Shown, make in advance the upper surface ds of pressing plate h1 and benzvalene form mould d separated by a distance L and
It is inserted into, thus reduce resistance when retreating.However, in this case, when making removable tray mould e rise, can be in benzvalene form
Gap j is produced between mould d and die main body c.As a result, cause cast gate to remain, thus producing rubber product to rubber product W
The efficiency that W takes out from die cavity b reduces such problem.
Patent documentation 1：Japanese Unexamined Patent Publication 2001-121583 publication
Content of the invention
It is an object of the invention to provide the manufacture method of transfer molding device and the rubber product using this device,
So that the upper surface of benzvalene form mould is abutted in the way of linear contact lay with pressing plate, as basic, the impedance of pressing plate can be reduced,
The cast gate residual of suppression products formed, and the action being prevented from when pressing plate retreats is bad.
In order to solve above-mentioned problem, the invention of technical scheme 1 is characterised by possessing：Transfer molding mould, should
Transfer molding mould possesses：There is the die main body of the die cavity of molding；Benzvalene form mould, this benzvalene form mould is placed in described mould
In main body, there is the injection leading to described die cavity in the pelvic part of the recessed moulding material input of upper surface and from this pelvic part
Hole；And removable tray mould, this removable tray mould is placed on described benzvalene form mould, and extrudes and be put to by declining
Moulding material in described pelvic part, thus this moulding material is injected in die cavity via described hand-hole；And
Separative element, when so that described removable tray mould is increased after formation, this separative element makes described removable tray mould
Separate with benzvalene form mould, on the other hand,
Described separative element includes：Pressing plate, this pressing plate is from the position of readiness court more more outward than described benzvalene form mould
Benzvalene form die horizontal advances, and abuts with the upper surface of described benzvalene form mould in progressive position, thus hinders benzvalene form mould
Rise；And make the moving member that this pressing plate moved horizontally,
And described abutting is set to linear contact lay.
In addition, it is characterised in that described moving member is cylinder in technical scheme 2.
In addition, it is characterised in that the bearing surface carrying out the benzvalene form die side of described abutting is level in technical scheme 3
Face, and, the bearing surface of pressing plate side is directed towards direction of advance and acclivitous inclined plane.
In addition, in technical scheme 4, carry out the benzvalene form die side of described abutting bearing surface be directed towards direction of advance and to
The inclined plane of upper inclination, and, the bearing surface of pressing plate side is horizontal plane.
In addition, technical scheme 5 is the manufacture method of rubber product it is characterised in that having using in technical scheme 1～4
The molding procedure of the transfer molding device described in either a program.
As described above, the present invention makes pressing plate and the upper surface of benzvalene form mould be abutted in the way of linear contact lay.For example,
Using the side in the bearing surface of the bearing surface of benzvalene form die side and pressing plate side as horizontal plane, using the opposing party as towards front
Enter direction and acclivitous inclined plane, thus, it is possible to realize described linear contact lay.
And, the impedance between pressing plate and benzvalene form mould can be reduced by this linear contact lay.Even if as a result, such as profit
With the weak moving member of the action force of cylinder etc it is also possible to reliably make pressing plate carry out retreating mobile etc. such that it is able to suppress
The bad generation of action.Further, since pressing plate need not be made to insert this pressing plate with floating from the upper surface of benzvalene form mould, because
This can suppress the cast gate of products formed to remain such that it is able to keep taking out the efficiency of products formed from die cavity.
Brief description
Fig. 1 is the sectional view of an embodiment of the transfer molding device illustrating the present invention.
Fig. 2 is to decompose the sectional view illustrating die main body.
Fig. 3 is the sectional view of transfer molding device when illustrating that pressing plate is advanced.
Fig. 4（A）It is the explanatory diagram of the action effect of the separative element illustrating the present invention, Fig. 4（B）It is that existing separation is shown
The explanatory diagram of the action effect of unit.
Fig. 5 is the axonometric chart of the other embodiments illustrating separative element.
Fig. 6（A）～Fig. 6（D）It is the sectional view of the operating state that existing transfer molding device is described.
Fig. 7（A）, Fig. 7（B）It is the sectional view of the problem points that existing transfer molding device is described.
Description of reference numerals：
1 ... transfer molding device；2 ... transfer molding moulds；3 ... separative elements；4 ... die main bodies；5 ... benzvalene form moulds；
5S ... upper surface；6 ... removable tray moulds；10 ... die cavities；12 ... pelvic parts；13 ... hand-holes；20 ... pressing plate；21 ... moving members；
22 ... horizontal planes；23 ... inclined planes；G ... moulding material；Y1 ... position of readiness；Y2 ... progressive position.
Specific embodiment
Hereinafter, embodiments of the present invention are described in detail.
In Fig. 1, the transfer molding device 1 of present embodiment possesses transfer molding mould 2 and separative element 3.In this example, lift
It is illustrated described transfer molding device 1 and form the rubber rollers of conveying paper that is, rubber used in such as photocopier etc.
The situation of product W.
Described transfer molding mould 2 possesses：There is the die main body 4 of the die cavity 10 of molding；And be placed in order
Benzvalene form mould 5 on this die main body 4, removable tray mould 6.
As shown in Fig. 2 the die main body 4 of this example includes lower mold portion 4L and upper mold portion 4U, lower mold portion 4L is vertical in base plate 7
Rise and be provided with forming rubber product W（It is rubber rollers in this example）Centre bore mandrel segment 8.Additionally, described base plate 7
It is supported on the fixed station of stamping machine via pressing plate f（Not shown）.In addition, being formed with outer with one heart inserting in described upper mold portion 4U
Multiple hole portions 9 in described plug portion 8, form described die cavity 10 by the space between this hole portion 9 and described plug portion 8.
In addition, described benzvalene form mould 5 has the matrix 11 of bulk, surface 5S is arranged with moulding material G and puts into use thereon
Pelvic part 12.In addition, between the lower surface of the bottom surface of pelvic part 12 and described matrix 11, being formed with and lead to type from described pelvic part 12
The hand-hole 13 in chamber 10.Additionally, according to the shape of the rubber product W of molding, size, quantity of formation（Take out quantity）Deng and suitable
Ground sets the construction of die cavity 10 and hand-hole 13.
In addition, as shown in described Fig. 1, described removable tray mould 6 has the matrix 14 of bulk, inserts the post of described pelvic part 12
Piston part 15 projects in the lower surface of this matrix 14.This removable tray mould 6 lifting platform in stamping machine via pressing plate f（Not shown）
It is supported to lift.Then, described removable tray mould 6 declines, thus to the moulding material G putting in described pelvic part 12
Extruded, so that this moulding material G is injected in die cavity 10 by described hand-hole 13.That is, to described rubber product W
Carry out molding.
Next, when so that described removable tray mould 6 is risen and take off after molding, described separative element 3 makes described work
Plug mould 6 is separated with benzvalene form mould 5.Specifically, described separative element 3 includes：Pressing plate 20, this pressing plate 20 is from than institute
State the more outward position of readiness Y1 of benzvalene form mould 5 to horizontally advance to benzvalene form mould 5, and in progressive position Y2（Shown in Fig. 3.）
Abut with the upper surface 5S of described benzvalene form mould 5；And make the moving member 21 that this pressing plate 20 moved horizontally.As described
Moving member 21, employs the weak cylinder of action force in this example.
Then, abutted with the upper surface 5S of benzvalene form mould 5 by described pressing plate 20, be prevented from benzvalene form mould 5 and live
Plug mould 6 is adhered to and rises together and together such that it is able to be separated removable tray mould 6 with benzvalene form mould 5.
Now, pressing plate 20 is abutted in the way of linear contact lay with the upper surface 5S of benzvalene form mould 5.In this example, by basin
The bearing surface 5Sa of formula mould 5 side as horizontal plane 22, and using the bearing surface 20Sa of pressing plate 20 side as towards direction of advance
And acclivitous inclined plane 23.Thereby, it is possible to make bearing surface 5Sa, 20Sa each other on the direction at a right angle with direction of advance
Carry out linear contact lay.
As Fig. 4（A）Shown, using the bearing surface of a side as described inclined plane 23, thus will from benzvalene form mould 5 act on by
Power F0 upward of pressing plate 20 resolves into component Fa and the side orthogonal with inclined plane 23 on the direction making pressing plate 20 retrogressing
Component Fb upwards.Therefore, it is possible to represent resistance when making pressing plate 20 retreat using following formula（Impedance）.Wherein, symbol μ represents
Coefficient of friction between benzvalene form mould 5 and pressing plate 20.
Resistance=frictional force A- component Fa
（Frictional force A=μ × Fb）
On the other hand, as Fig. 4（B）Shown, represent conventional resistance using following formula.
Resistance=frictional force B
（Frictional force B=μ × F0）
Therefore, in the separative element 3 of the present invention, resistance when making pressing plate 20 retreat can significantly be reduced（Impedance）,
Even with the weak moving member of the action force of cylinder etc also can reliably make pressing plate carry out retreating mobile etc. such that it is able to
The bad generation of suppression action.
In addition although not to described inclined plane 23 with respect to the horizontal plane 22 angle, θ carry out particular determination, but if this angle
Spend little, to be then formed as sword pointed and lead to intensity decreases for pressing plate 20, on the contrary, if this angle is excessive, the reduction of resistance
Effect becomes insufficient.According to such viewpoint, preferably described angle, θ is 45 ° ± 15 ° about.
The other embodiments of described separative element 3 are shown in Fig. 5.In this example, by the bearing surface 5Sa of benzvalene form mould 5 side
As towards direction of advance and acclivitous inclined plane 23, and the bearing surface 20Sa of pressing plate 20 side is made to be formed as horizontal plane
22.Even if resistance when making pressing plate 20 retreat in this case, equally also can be reduced（Impedance）.
Additionally, forming described rubber by having using the forming method of the molding procedure of described transfer molding device 1
Product W.
Above although having been described in detail to particularly preferred embodiment of the invention, but the invention is not limited in figure
The embodiment showing, can be deformed into various modes and implement.
Embodiment
In order to confirm the effect of the present invention, define duplicating using the transfer molding mould with the construction shown in Fig. 1
The rubber rollers of machine.The size of rubber rollers is external diameter 16mm, internal diameter 11mm, length 90mm, as moulding material, employs relatively
Ethylene propylene diene rubber in 100 parts of quality（EPDM）Coordinate additive（Calcium Carbonate 10phr, titanium oxide 2phr, oily 50phr, charcoal
Black 1phr, peroxide 1phr）Material.In addition, be set as the transfer molding being used mould can be once to 100 rubbers
Rubber roll carries out molding.
Condition of molding is as follows.
Curing temperature：160℃
Cure time：20 points
Injection length：30 seconds
Stamping pressure：150t
Employ the separative element shown in Fig. 3 in embodiment 1, employ the separation list shown in Fig. 5 in example 2
Unit, employs the separative element shown in Fig. 7 in comparative example 1.Additionally, the angle, θ of the inclined plane in embodiment 1,2 is 45 °.
In addition, the separating distance L between the pressing plate in comparative example 1 and benzvalene form mould upper surface is set to 2mm.
In embodiment 1,2, comparative example 1, carry out 100 molding respectively, cast gate residual will have been caused in 1 molding
Rubber rollers generation lazy weight 10%（Less than 10）Situation be evaluated as OK, by more than 10%（More than 10）Situation comment
Valency is NG.The molding number of times being chosen as OK is The more the better.
Table 1
Claims (5)
1. a kind of transfer molding device, possesses：
Transfer molding mould, this transfer molding mould possesses：There is the die main body of the die cavity of molding；Benzvalene form mould, this basin
Formula mould is placed on described die main body, has in the pelvic part of the recessed moulding material input of upper surface and from this basin
Portion leads to the hand-hole of described die cavity；And removable tray mould, this removable tray mould is placed on described benzvalene form mould, and leads to
Cross decline and extrude the moulding material being put in described pelvic part, thus being injected into this moulding material via described hand-hole
In die cavity,
Described transfer molding device is characterised by, is also equipped with separative element, so that described removable tray mould is increased after formation
When, this separative element makes described removable tray mould separate with benzvalene form mould, on the other hand,
Described separative element includes：Pressing plate, this pressing plate is from the position of readiness more more outward than described benzvalene form mould towards benzvalene form
Die horizontal advances, and abuts with the upper surface of described benzvalene form mould in progressive position, thus hinders the rising of benzvalene form mould；
And make the moving member that this pressing plate moved horizontally,
And described abutting is set to linear contact lay.
2. transfer molding device according to claim 1 it is characterised in that
Described moving member is cylinder.
3. transfer molding device according to claim 1 and 2 it is characterised in that
The bearing surface carrying out the benzvalene form die side of described abutting is horizontal plane, and, the bearing surface of pressing plate side is directed towards advancing
Direction and acclivitous inclined plane.
4. transfer molding device according to claim 1 and 2 it is characterised in that
The bearing surface carrying out the benzvalene form die side of described abutting is directed towards direction of advance and acclivitous inclined plane, and, presses
The bearing surface of pressing plate side is horizontal plane.
5. a kind of manufacture method of rubber product it is characterised in that
There is the molding procedure that usage right requires the transfer molding device any one of 1～4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-114804 | 2012-05-18 | ||
| JP2012114804A JP5498530B2 (en) | 2012-05-18 | 2012-05-18 | Transfer molding apparatus and rubber product manufacturing method using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103419316A CN103419316A (en) | 2013-12-04 |
| CN103419316B true CN103419316B (en) | 2017-03-01 |
Family
ID=49644939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210544498.9A Expired - Fee Related CN103419316B (en) | 2012-05-18 | 2012-12-14 | Transfer molding device and the rubber product manufacture method using this device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5498530B2 (en) |
| CN (1) | CN103419316B (en) |
| TW (1) | TW201347951A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753742B (en) * | 2013-12-27 | 2016-01-13 | 宁波三峰机械电子有限公司 | The mould of float vulcanization formation method and enforcement the method |
| JP6392019B2 (en) * | 2014-07-30 | 2018-09-19 | 住友ゴム工業株式会社 | Transfer molding equipment |
| CN106313575B (en) * | 2015-06-26 | 2018-10-23 | 杨大卫 | Production system and manufacturing process |
| CN105835301B (en) * | 2016-05-17 | 2017-12-26 | 合肥学院 | A kind of rubber parts short vulcanization moulding process and mould |
| CN106313439B (en) * | 2016-10-31 | 2018-12-04 | 江阴市鸿萌橡塑制品有限公司 | A kind of tubular syringe part molding die, process units and production technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3327355A (en) * | 1965-06-22 | 1967-06-27 | Clevite Corp | Multi-plate transfer mold |
| US5213749A (en) * | 1991-07-31 | 1993-05-25 | Westinghouse Air Brake Company | Method of forming a rubber seal having a metallic insert |
| CN101579911A (en) * | 2004-12-13 | 2009-11-18 | 赫斯基注射器成型系统有限公司 | Injection molding machine apparatus and method with moving platen injection and ejection actuation |
| JP5038052B2 (en) * | 2007-08-03 | 2012-10-03 | 株式会社松田製作所 | Molding apparatus and molding method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60129222A (en) * | 1983-12-17 | 1985-07-10 | Toyoda Gosei Co Ltd | Mold opening device in molding machine |
| JPH01116905U (en) * | 1988-01-28 | 1989-08-07 | ||
| JPH10296781A (en) * | 1997-04-28 | 1998-11-10 | Alpha-:Kk | Plunger structure in transfer molding tool device |
| JP2001121583A (en) * | 1999-10-26 | 2001-05-08 | Bridgestone Corp | Multi-cavity mold for rubber product |
-
2012
- 2012-05-18 JP JP2012114804A patent/JP5498530B2/en active Active
- 2012-10-19 TW TW101138711A patent/TW201347951A/en unknown
- 2012-12-14 CN CN201210544498.9A patent/CN103419316B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3327355A (en) * | 1965-06-22 | 1967-06-27 | Clevite Corp | Multi-plate transfer mold |
| US5213749A (en) * | 1991-07-31 | 1993-05-25 | Westinghouse Air Brake Company | Method of forming a rubber seal having a metallic insert |
| CN101579911A (en) * | 2004-12-13 | 2009-11-18 | 赫斯基注射器成型系统有限公司 | Injection molding machine apparatus and method with moving platen injection and ejection actuation |
| JP5038052B2 (en) * | 2007-08-03 | 2012-10-03 | 株式会社松田製作所 | Molding apparatus and molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013240903A (en) | 2013-12-05 |
| TW201347951A (en) | 2013-12-01 |
| CN103419316A (en) | 2013-12-04 |
| JP5498530B2 (en) | 2014-05-21 |
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Granted publication date: 20170301 Termination date: 20211214 |