CN103419316A - Manufacturing method of the transfer molding device and rubber goods using the same - Google Patents
Manufacturing method of the transfer molding device and rubber goods using the same Download PDFInfo
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- CN103419316A CN103419316A CN2012105444989A CN201210544498A CN103419316A CN 103419316 A CN103419316 A CN 103419316A CN 2012105444989 A CN2012105444989 A CN 2012105444989A CN 201210544498 A CN201210544498 A CN 201210544498A CN 103419316 A CN103419316 A CN 103419316A
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- mould
- benzvalene form
- pressing plate
- transfer molding
- molding device
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Abstract
The present invention relates to a manufacturing method of a transfer molding device and a rubber goods using the same which can perform efficiently separation of the piston type in a transfer-molding mold, and a pot type, inhibiting the gate piece of a molded article. The transfer molding device is provided with the transfer-molding mold and a separating mechanism. The transfer-molding mold is provided with a pot type and a piston type mold. The pot type mold has an injected hole which leads to the cavity from a pot part and this pot part for molding material supply cut in the upper surface while placing on the metallic mold body. The piston type mold pushes in the molding material thrown in by descent in the pot part, and is injected in a cavity through the injected hole. The separating mechanism is provides with a pressing plate, the pressing plate in which the separating mechanism bars a pot type rise by facing to a pot type, moving forward horizontally and abutting with the aforementioned pot type upper surface in an advance position from a position in readiness outside a described above pot type.
Description
Technical field
The cast gate that the present invention relates to suppress products formed is residual, and can carry out efficiently the transfer molding device separated of removable tray mould in the transfer molding mould and benzvalene form (pot) mould, and the manufacture method of using the rubber product of this device.
Background technology
As the manufacture method of the rubber products such as rubber rollers, transfer molding is widely known by the people (for example, with reference to patent documentation 1.）。As Fig. 6 (A) is schematically shown, the mould a used in this transfer molding comprises die main body c with die cavity b that moulding uses, loads benzvalene form mould d and the removable tray mould e above this die main body c in order.
At described benzvalene form mould d, be provided with: the moulding material be arranged with at the upper surface of this benzvalene form mould d drops into the pelvic part d1 of use; And the hand-hole d2 that leads to described die cavity b from this pelvic part d1.And, at the lower surface of described removable tray mould e, be extruded with the plunger portion e1 that inserts described pelvic part d1.Described removable tray mould e is supported at the lifting platform (not shown) of stamping machine via pressing plate f can lifting, and die main body c is supported on the fixed station (not shown) of stamping machine via pressing plate f.Then, as shown in Fig. 6 (B), utilize stamping machine that described removable tray mould e is descended, thus the moulding material G put in described pelvic part d1 is pushed, it is injected in die cavity b via described hand-hole d2, thereby is shaped to rubber product W.
In addition, after moulding, in order to take out rubber product W, at first need only to make described removable tray mould e to rise and it is separated with benzvalene form mould d, as shown in Fig. 6 (C), as separative element h, using pressing plate h1.Utilize cylinder h2 that this pressing plate h1 is advanced, and make the upper surface ds butt of itself and benzvalene form mould d, prevent thus that benzvalene form mould d and removable tray mould e adhesion are integral and together rise, thereby removable tray mould e is separated with benzvalene form mould d.
Yet, as shown in Fig. 6 (D), while separating with benzvalene form mould d when described removable tray mould e rising, inner rubber product W expands because of releasing, the temperature rising of compression, thus jack-up benzvalene form mould d.Therefore, the resistance between benzvalene form mould d and pressing plate h1 increases, and it is not enough that the power that cylinder h2 produces becomes, and can't make pressing plate h1 retreat into position of readiness.
Therefore, in the past as shown in Fig. 7 (A), make in advance the upper surface ds partition distance L of pressing plate h1 and benzvalene form mould d and be inserted into, reduce thus the resistance while retreating.Yet, in this case, when making removable tray mould e increase, can between benzvalene form mould d and die main body c, produce gap j.Its result, cause that to rubber product W cast gate is residual, thereby produce the such problem of Efficiency Decreasing that rubber product W takes out from die cavity b.
Patent documentation 1: TOHKEMY 2001-121583 communique
Summary of the invention
The manufacture method that the object of the present invention is to provide the transfer molding device and use the rubber product of this device, the mode butt that the upper surface of benzvalene form mould is contacted with line with pressing plate, as substantially, can reduce the impedance of pressing plate, the cast gate that suppresses products formed is residual, and the action can prevent that pressing plate from retreating the time is bad.
In order to solve above-mentioned problem, the invention of present techniques scheme 1 is characterised in that to possess: the transfer molding mould, and this transfer molding mould possesses: the die main body with die cavity that moulding uses; The benzvalene form mould, this benzvalene form mould loads on described die main body, has the moulding material be arranged with at upper surface and drops into the pelvic part of use and the hand-hole that leads to described die cavity from this pelvic part; And removable tray mould, this removable tray mould loads on described benzvalene form mould, and pushes the moulding material be put in described pelvic part by decline, thereby via described hand-hole, this moulding material is injected in die cavity; And
Separative element, while making described removable tray mould increase after moulding, this separative element makes described removable tray mould separate with the benzvalene form mould, on the other hand,
Described separative element comprises: pressing plate, and this pressing plate is from advancing towards the benzvalene form die horizontal than described benzvalene form mould position of readiness more in the outer part, and, at the upper surface butt of progressive position and described benzvalene form mould, hinders thus the rising of benzvalene form mould; And the moving member that this pressing plate is moved horizontally,
And described butt is made as to the line contact.
In addition, in technical scheme 2, it is characterized in that, described moving member is cylinder.
In addition, in technical scheme 3, it is characterized in that, the bearing surface that carries out the benzvalene form die side of described butt is horizontal plane, and the bearing surface of pressing plate side is towards direction of advance and acclivitous inclined plane.
In addition, in technical scheme 4, the bearing surface that carries out the benzvalene form die side of described butt is towards direction of advance and acclivitous inclined plane, and the bearing surface of pressing plate side is horizontal plane.
In addition, technical scheme 5 is manufacture methods of rubber product, it is characterized in that, has the molding procedure of the transfer molding device that in operation technique scheme 1～4, arbitrary scheme is put down in writing.
As mentioned above, the present invention makes pressing plate carry out butt with the mode that the upper surface of benzvalene form mould contacts with line.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 direction of advance and acclivitous inclined plane, can realize thus described line contact.
And, by this line contact, can reduce the impedance between pressing plate and benzvalene form mould.Its result, even for example utilize the weak moving member of action force of cylinder and so on, also can make reliably pressing plate be retreated movement etc., thereby can suppress to move bad generation.In addition, because the upper surface without making pressing plate from the benzvalene form mould floats ground by this pressing plate insertion, the cast gate that therefore can suppress products formed is residual, thereby can keep taking out from die cavity the efficiency of products formed.
The accompanying drawing explanation
Fig. 1 is the cutaway view that an embodiment of transfer molding device of the present invention is shown.
Fig. 2 decomposes the cutaway view that die main body is shown.
Fig. 3 is the cutaway view of the transfer molding device when pressing plate being shown advancing.
Fig. 4 (A) is the key diagram that the action effect of separative element of the present invention is shown, and Fig. 4 (B) is the key diagram that the action effect of existing separative element is shown.
Fig. 5 is the stereogram that other embodiment of separative element is shown.
Fig. 6 (A)～Fig. 6 (D) is the cutaway view of the operating state of the existing transfer molding device of explanation.
Fig. 7 (A), Fig. 7 (B) are the cutaway views of the problem points of the existing transfer molding device of explanation.
Description of reference numerals:
1 ... the transfer molding device; 2 ... the transfer molding mould; 3 ... separative element; 4 ... die main body; 5 ... the benzvalene form mould; 5S ... upper surface; 6 ... removable tray mould; 10 ... die cavity; 12 ... pelvic part; 13 ... hand-hole; 20 ... pressing plate; 21 ... moving member; 22 ... horizontal plane; 23 ... inclined plane; G ... moulding material; Y1 ... position of readiness; Y2 ... progressive position.
The specific embodiment
Below, embodiments of the present invention are elaborated.
In Fig. 1, the transfer molding device 1 of present embodiment possesses transfer molding mould 2 and separative element 3.In this example, show for example described transfer molding device 1 and form the rubber rollers used such as the conveyance of sheets used in duplicator etc. that is the situation of rubber product W.
Described transfer molding mould 2 possesses: the die main body 4 with die cavity 10 that moulding uses; And load in order benzvalene form mould 5, the removable tray mould 6 on this die main body 4.
As shown in Figure 2, this routine die main body 4 comprises lower mold portion 4L and upper mold portion 4U, and lower mold portion 4L erects to be provided with and can form in this example of rubber product W(as rubber rollers on base plate 7) the mandrel segment 8 of centre bore.In addition, described base plate 7 is supported on the fixed station (not shown) of stamping machine via pressing plate f.In addition, insert in a plurality of hole section 9 of described plug section 8 outside described upper mold portion 4U is formed with one heart, by the space between this hole section 9 and described plug section 8, form described die cavity 10.
In addition, described benzvalene form mould 5 has block matrix 11, and surperficial 5S is concaved with the pelvic part 12 that moulding material G drops into use thereon.In addition, between the lower surface of the bottom surface of pelvic part 12 and described matrix 11, be formed with the hand-hole 13 that leads to die cavity 10 from described pelvic part 12.In addition, according to the shape of the rubber product W of moulding, size, quantity of formation (taking-up quantity) etc. and suitably set the structure of die cavity 10 and hand-hole 13.
In addition, as described in as shown in Fig. 1, described removable tray mould 6 has block matrix 14, the plunger portion 15 of inserting described pelvic part 12 is outstanding at the lower surface of this matrix 14.This removable tray mould 6 is supported at the lifting platform (not shown) of stamping machine via pressing plate f can lifting.Then, described removable tray mould 6 descends, and thus the moulding material G put in described pelvic part 12 is pushed, thereby this moulding material G is injected in die cavity 10 by described hand-hole 13.That is, described rubber product W is carried out to moulding.
Next, when moulding makes described removable tray mould 6 rise later and takes off, described separative element 3 makes described removable tray mould 6 separate with benzvalene form mould 5.Particularly, described separative element 3 comprises: pressing plate 20, and this pressing plate 20 is from than described benzvalene form mould 5, position of readiness Y1 more in the outer part advances to benzvalene form mould 5 levels, and shown in progressive position Y2(Fig. 3.) with the upper surface 5S butt of described benzvalene form mould 5; And the moving member 21 that this pressing plate 20 is moved horizontally.As described moving member 21, adopted in this example the weak cylinder of action force.
So the upper surface 5S butt by described pressing plate 20 with benzvalene form mould 5, together with can preventing benzvalene form mould 5 and removable tray mould 6 adhering to and together rise, thereby can separate removable tray mould 6 with benzvalene form mould 5.
Now, pressing plate 20 carries out butt with the mode that the upper surface 5S of benzvalene form mould 5 contacts with line.In this example, using the bearing surface 5Sa of benzvalene form mould 5 sides as horizontal plane 22, and using the bearing surface 20Sa of pressing plate 20 sides as towards direction of advance and acclivitous inclined plane 23.Thus, can make bearing surface 5Sa, 20Sa contact with the enterprising line of the rectangular direction of direction of advance each other.
As shown in Fig. 4 (A), using a side bearing surface as described inclined plane 23, the power F0 upward that will act on pressing plate 20 from benzvalene form mould 5 thus resolve into component Fa the direction that pressing plate 20 is retreated and with the direction of inclined plane 23 quadratures on component Fb.Therefore, the resistance (impedance) in the time of can utilizing following formula to mean pressing plate 20 is retreated.Wherein, symbol μ means the 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 shown in Fig. 4 (B), utilize following formula to mean resistance in the past.
Resistance=frictional force B
(frictional force B=μ * F0)
Therefore, in separative element 3 of the present invention, resistance (impedance) in the time of can significantly reducing pressing plate 20 is retreated, even utilize the weak moving member of action force of cylinder and so on also can make reliably pressing plate be retreated movement etc., thereby can suppress to move bad generation.
In addition, although not to described inclined plane 23 with respect to the horizontal plane 22 angle θ carry out particular determination, if this angle too small, it is pointed and cause strength decreased that pressing plate 20 can form sword, on the contrary, if this angle is excessive, the effect that reduces of resistance becomes insufficient.According to such viewpoint, preferred described angle θ is 45 ° ± 15 ° left and right.
Other embodiment of described separative element 3 has been shown in Fig. 5.In this example, using the bearing surface 5Sa of benzvalene form mould 5 sides as court, advance direction and acclivitous inclined plane 23, and make the bearing surface 20Sa of pressing plate 20 sides form horizontal plane 22.Even the resistance (impedance) in the time of in this case, equally also can reducing pressing plate 20 is retreated.
In addition, form described rubber product W by the forming method with molding procedure of using described transfer molding device 1.
Above, although the particularly preferred embodiment of the present invention is described in detail, the present invention is not limited to illustrated embodiment, can be deformed into variety of way and implement.
Embodiment
In order to confirm effect of the present invention, use the rubber rollers that there is the transfer molding mould of the structure shown in Fig. 1 and formed used in copy machines.Rubber rollers is of a size of external diameter 16mm, internal diameter 11mm, length 90mm, as moulding material, used the material that has coordinated additive (calcium carbonate 10phr, titanium oxide 2phr, oily 50phr, carbon black 1phr, peroxide 1phr) with respect to the ethylene propylene diene rubber (EPDM) of 100 parts of quality.In addition, used transfer molding mould is set as can once to 100 rubber rollers, carry out moulding.
Condition of molding is as follows.
Curing temperature: 160 ℃
Cure time: 20 minutes
Injection length: 30 seconds
Stamping pressure: 150t
Used the separative element shown in Fig. 3 in embodiment 1, used the separative element shown in Fig. 5 in embodiment 2, used the separative element shown in Fig. 7 in comparative example 1.In addition, the angle θ on 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 made as to 2mm.
In embodiment 1,2, comparative example 1,100 moulding have been carried out respectively, to in 1 moulding, cause 10 of the generation lazy weight 10%(less thaies of the rubber rollers that cast gate is residual) average evaluation be OK, by the average evaluation of (more than 10) more than 10%, be NG.The moulding number of times that is chosen as OK is The more the better.
Table 1
Claims (5)
1. a transfer molding device, is characterized in that,
Possess:
The transfer molding mould, this transfer molding mould possesses: the die main body with die cavity that moulding uses; The benzvalene form mould, this benzvalene form mould loads on described die main body, has the moulding material be arranged with at upper surface and drops into the pelvic part of use and the hand-hole that leads to described die cavity from this pelvic part; And removable tray mould, this removable tray mould loads on described benzvalene form mould, and pushes the moulding material be put in described pelvic part by decline, thereby via described hand-hole, this moulding material is injected in die cavity; And
Separative element, while making described removable tray mould increase after moulding, this separative element makes described removable tray mould separate with the benzvalene form mould, on the other hand,
Described separative element comprises: pressing plate, and this pressing plate is from advancing towards the benzvalene form die horizontal than described benzvalene form mould position of readiness more in the outer part, and, at the upper surface butt of progressive position and described benzvalene form mould, hinders thus the rising of benzvalene form mould; And the moving member that this pressing plate is moved horizontally,
And described butt is made as to the line contact.
2. transfer molding device according to claim 1, is characterized in that,
Described moving member is cylinder.
3. transfer molding device according to claim 1 and 2, is characterized in that,
The bearing surface that carries out the benzvalene form die side of described butt is horizontal plane, and the bearing surface of pressing plate side is towards direction of advance and acclivitous inclined plane.
4. transfer molding device according to claim 1 and 2, is characterized in that,
The bearing surface that carries out the benzvalene form die side of described butt is towards direction of advance and acclivitous inclined plane, and the bearing surface of pressing plate side is horizontal plane.
5. the manufacture method of a rubber product, is characterized in that,
There is the molding procedure that right to use requires the described transfer molding device of any one in 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 true CN103419316A (en) | 2013-12-04 |
| CN103419316B 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753742A (en) * | 2013-12-27 | 2014-04-30 | 宁波三峰机械电子有限公司 | Floater vulcanizing molding method and mould for implementing method |
| CN105835301A (en) * | 2016-05-17 | 2016-08-10 | 合肥学院 | Rapid vulcanization forming process for rubber parts, and die |
| CN106313439A (en) * | 2016-10-31 | 2017-01-11 | 江阴市鸿萌橡塑制品有限公司 | Tubular injection piece mold, production device and production process |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (5)
| 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 |
| JP2001121583A (en) * | 1999-10-26 | 2001-05-08 | Bridgestone Corp | Multi-cavity mold for rubber product |
| CN101579911A (en) * | 2004-12-13 | 2009-11-18 | 赫斯基注射器成型***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 (3)
| 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 |
-
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 (5)
| 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 |
| JP2001121583A (en) * | 1999-10-26 | 2001-05-08 | Bridgestone Corp | Multi-cavity mold for rubber product |
| CN101579911A (en) * | 2004-12-13 | 2009-11-18 | 赫斯基注射器成型***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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753742A (en) * | 2013-12-27 | 2014-04-30 | 宁波三峰机械电子有限公司 | Floater vulcanizing molding method and mould for implementing method |
| CN105835301A (en) * | 2016-05-17 | 2016-08-10 | 合肥学院 | Rapid vulcanization forming process for rubber parts, and die |
| CN105835301B (en) * | 2016-05-17 | 2017-12-26 | 合肥学院 | A kind of rubber parts short vulcanization moulding process and mould |
| CN106313439A (en) * | 2016-10-31 | 2017-01-11 | 江阴市鸿萌橡塑制品有限公司 | Tubular injection piece mold, production device and production process |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103419316B (en) | 2017-03-01 |
| JP2013240903A (en) | 2013-12-05 |
| JP5498530B2 (en) | 2014-05-21 |
| TW201347951A (en) | 2013-12-01 |
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