CN202965078U - Double-material injection mold - Google Patents

Double-material injection mold Download PDF

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Publication number
CN202965078U
CN202965078U CN 201220656144 CN201220656144U CN202965078U CN 202965078 U CN202965078 U CN 202965078U CN 201220656144 CN201220656144 CN 201220656144 CN 201220656144 U CN201220656144 U CN 201220656144U CN 202965078 U CN202965078 U CN 202965078U
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China
Prior art keywords
cover
push rod
injection
die cavity
support column
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Active
Application number
CN 201220656144
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Chinese (zh)
Inventor
贾文杰
王春生
黄崇邦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Space Mould and Plastic Co Ltd
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Chengdu Space Mould and Plastic Co Ltd
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Priority to CN 201220656144 priority Critical patent/CN202965078U/en
Application granted granted Critical
Publication of CN202965078U publication Critical patent/CN202965078U/en
Active legal-status Critical Current
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Abstract

The utility model discloses a double-material injection mold which comprises a fixed die, a cavity and an ejection device, wherein the cavity is formed in the fixed die; the ejection device is mounted on the fixed die; the ejection device comprises an ejector rod, a supporting post, an ejector rod plate and a spring; the spring is arranged between the fixed die and the ejector rod plate; and the ejector rod and the supporting post are arranged on the ejector rod plate. According to the mold, the phenomenon that the product is adhered to the fixed die due to the packaging force during molding shrinkage can be avoided, and the product is ejected out of the fixed die, so that the product is smoothly separated from the fixed die, and subsequent injection molding is finished.

Description

A kind of pair of material injection mold
Technical field
The utility model relates to the injection mold field, particularly a kind ofly prevents that changing product in the process of chamber at the injection mo(u)lding dynamic model is bonded at two material injection molds on cover half.
Background technology
Double-shot moulding (crying again two material injection mouldings) is a kind of special plastics injection molding method of development in recent years, and it can mold the goods that are comprised of two kinds of different colours or different plastics (as a kind of rigid plastics, a kind of flexible plastic).The forming principle of double-shot moulding is that the mold cavity that reinjects molds the working of plastics that the surface has two kinds of colors with the plasticizing respectively in two barrels of two kinds of different plastics.The process of using double-shot moulding technological forming bicolor plastic part the most often to adopt has that core is rotary, shrinkage die core formula, take off the rotary and core slidingtype double color injection technology of part plate etc.The technical process of the rotary double color injection technology of core is as follows: at first inject the first plastics by injection device in little die cavity, mold the first of bicolor plastic part, then die sinking, dynamic model Rotate 180 °, matched moulds, the working of plastics of previous step moulding changes in another die cavity becomes inserts, the plastics of injection device another kind of color of injection in this die cavity, plastic insert is sealed, can be molded bicolor plastic part.Meanwhile, injection device is injection the first plastics in the little die cavity, mold next plastic insert, and bicolor plastic part is released in die sinking after the goods curing molding, dynamic model Rotate 180 °, and mold closing is namely completed the single injection-molded cycle.
In injection moulding process, for the first time the product needed of injection in dynamic model with dynamic model Rotate 180 °, when the product of injection moulding when there are the structures such as groove, reinforcement, fin in the one side of cover half moulding, the package power that produces when formed product is shunk will make product be bonded on cover half, when causing die sinking for the first time because product is bonded on cover half, and can not rotate into another die cavity with dynamic model, thereby cause product injection moulding failure.
The utility model content
It is a kind of in the double-shot moulding process that the technical problem that the utility model solves is to provide, and the product that can prevent injection mo(u)lding for the first time is bonded at the two material injection molds on cover half.
For solving the problems of the technologies described above, the utility model has adopted a kind of pair of material injection mold, comprise cover half, die cavity and liftout attachment, described die cavity is arranged on cover half, described liftout attachment is arranged on cover half, described liftout attachment comprises push rod, support column, mandrel plate and spring, and described spring is arranged between cover half and mandrel plate, and described push rod and support column are arranged on mandrel plate.
When die opening state, push rod passes from the die cavity of cover half, and the die cavity side of support column from cover half passes.
The length of the Length Ratio push rod of support column is large.
After matched moulds, the upper surface of push rod is concordant with the cavity surface of cover half.
The length difference distance of support column and push rod is the degree of depth of die cavity.
The beneficial effect that the utlity model has: this pair material injection mold is by arranging liftout attachment on cover half, after injection for the first time, during die sinking, spring promotes the push rod on mandrel plate, product is withstood on dynamic model, thereby avoided the package power of product when moulding is shunk that product is bonded on cover half, made product smoothly and the cover half disengaging, completed follow-up injection moulding.
Description of drawings
Fig. 1 is structural representation under this utility model die opening state;
Fig. 2 is structural representation under this utility model matched moulds state;
In figure: 1, cover half; 2, mandrel plate; 3, push rod; 4, support column; 5, spring; 6, die cavity.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail.
A kind of pair of material injection mold, comprise cover half 1, die cavity 6 and liftout attachment, wherein die cavity 6 is arranged on cover half 1, liftout attachment is arranged on cover half 1, liftout attachment comprises push rod 3, support column 4, mandrel plate 2 and spring 5, spring 5 is arranged between cover half 1 and mandrel plate 2, and push rod 3 and support column 4 are arranged on mandrel plate 2.As shown in Figure 1, when die opening state, push rod 3 passes from the die cavity of cover half 1, and the die cavity side of support column 4 from cover half 1 passes, and wherein the length of the Length Ratio push rod 3 of support column 4 is large.
As shown in Figure 2, during this injection mould closing, because the length of support column in liftout attachment 4 is larger than the length of push rod 3, at first dynamic model contacts with support bar 4, support bar 4 under the effect of dynamic model with mandrel plate 2 to pressing down, under the effect of mandrel plate 2, to lower compression, the push rod 3 that be arranged on mandrel plate 2 this moment moves downward spring 5 by mandrel plate 2.After making matched moulds, the upper surface of push rod 3 is just in time concordant with the cavity surface of cover half 1, so the length difference of support column 4 and push rod 3 is apart from the degree of depth that is designed to die cavity 6.
After mould is completed matched moulds, beginning is injection for the first time, melten gel is moulding in die cavity, then die sinking, and the spring 5 of compression this moment promotes mandrel plate 2 and moves upward, the push rod 3 that is arranged on mandrel plate 2 moves upward with mandrel plate 2, push rod 3 ejects cover half 1 with the product of moulding, and product is pressed on dynamic model, and product is rotated in another die cavity with dynamic model, thereby complete follow-up injection moulding, obtain final product.

Claims (5)

1. two material injection mold, comprise cover half (1), die cavity (6) and liftout attachment, described die cavity (6) is arranged on cover half (1), it is characterized in that: described liftout attachment is arranged on cover half (1), described liftout attachment comprises push rod (3), support column (4), mandrel plate (2) and spring (5), described spring (5) is arranged between cover half (1) and mandrel plate (2), and described push rod (3) and support column (4) are arranged on mandrel plate (2).
2. mould as claimed in claim 1, it is characterized in that: when die opening state, push rod (3) passes from the die cavity (6) of cover half (1), and die cavity (6) side of support column (4) from cover half (1) passes.
3. mould as claimed in claim 1 or 2, it is characterized in that: the length of the Length Ratio push rod (3) of support column (4) is large.
4. mould as claimed in claim 3, it is characterized in that: after matched moulds, the upper surface of push rod (3) is concordant with the cavity surface of cover half (1).
5. mould as claimed in claim 1 or 2 is characterized in that: the length difference of support column (4) and push rod (3) is apart from being the degree of depth of die cavity (6).
CN 201220656144 2012-12-04 2012-12-04 Double-material injection mold Active CN202965078U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220656144 CN202965078U (en) 2012-12-04 2012-12-04 Double-material injection mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220656144 CN202965078U (en) 2012-12-04 2012-12-04 Double-material injection mold

Publications (1)

Publication Number Publication Date
CN202965078U true CN202965078U (en) 2013-06-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220656144 Active CN202965078U (en) 2012-12-04 2012-12-04 Double-material injection mold

Country Status (1)

Country Link
CN (1) CN202965078U (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104647706A (en) * 2015-02-27 2015-05-27 江苏雨燕模业科技有限公司 Energy-saving automatic push-out mold
CN104859113A (en) * 2015-06-22 2015-08-26 王盛娜 Ejection mechanism of front mould of injection mould
CN106426676A (en) * 2016-10-19 2017-02-22 格力电器(武汉)有限公司 Mold assembly and mold
CN108032491A (en) * 2017-12-06 2018-05-15 盐城工学院 A kind of shaping efficiency it is high inside contract core-pulling die
CN108099125A (en) * 2017-12-06 2018-06-01 盐城工学院 A kind of core pulling molding die of no ejector retainner plate
CN108099124A (en) * 2017-12-06 2018-06-01 盐城工学院 One kind is new to inside contract core-pulling die
CN108115896A (en) * 2017-12-06 2018-06-05 盐城工学院 It is a kind of to stablize the mold realized and inside contract core pulling
CN110978386A (en) * 2019-12-18 2020-04-10 杭州嘉通机械有限公司 Multicolor injection mold and injection molding method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104647706A (en) * 2015-02-27 2015-05-27 江苏雨燕模业科技有限公司 Energy-saving automatic push-out mold
CN104859113A (en) * 2015-06-22 2015-08-26 王盛娜 Ejection mechanism of front mould of injection mould
CN106426676A (en) * 2016-10-19 2017-02-22 格力电器(武汉)有限公司 Mold assembly and mold
CN106426676B (en) * 2016-10-19 2019-01-22 格力电器(武汉)有限公司 Die assembly and mold
CN108032491A (en) * 2017-12-06 2018-05-15 盐城工学院 A kind of shaping efficiency it is high inside contract core-pulling die
CN108099125A (en) * 2017-12-06 2018-06-01 盐城工学院 A kind of core pulling molding die of no ejector retainner plate
CN108099124A (en) * 2017-12-06 2018-06-01 盐城工学院 One kind is new to inside contract core-pulling die
CN108115896A (en) * 2017-12-06 2018-06-05 盐城工学院 It is a kind of to stablize the mold realized and inside contract core pulling
CN110978386A (en) * 2019-12-18 2020-04-10 杭州嘉通机械有限公司 Multicolor injection mold and injection molding method thereof

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