CN204955262U - Thin wall low pressure secondary forming mechanism that moulds plastics - Google Patents
Thin wall low pressure secondary forming mechanism that moulds plastics Download PDFInfo
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- CN204955262U CN204955262U CN201520583304.5U CN201520583304U CN204955262U CN 204955262 U CN204955262 U CN 204955262U CN 201520583304 U CN201520583304 U CN 201520583304U CN 204955262 U CN204955262 U CN 204955262U
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Abstract
The utility model belongs to the technical field of mould equipment, a thin wall low pressure secondary forming mechanism that moulds plastics is provided, including preceding membrane module and lower membrane module, preceding membrane module includes an upper fixed plate, caster and hot runner, sets up the needle at the front end of hot runner, and the caster is fixed on an upper fixed plate, and the hot runner setting is in the master model, and lower membrane module is including bottom plate, supporting shoe and public template, and this time membrane module is fixed on the bottom plate still including secondary forming device to the supporting shoe, and secondary forming device lies in under the public mould benevolence. The utility model has the advantages of the core of this mould is the mode that the kicking block adopted the through -hole mold insert, and the kicking block adopts oil cylinder drive's mode, can do the up -and -down motion, and the athletic meeting of kicking block drives the change of die cavity thickness, and the hydro -cylinder be the stroke is controllable to form the change of controllable wall thickness to the thickness of product, injection pressure is little, and the pressurize is even, and the inside residual strain of product is low after the shaping, and the product warp for a short time.
Description
Technical field
The utility model belongs to die apparatus technical field, relates to a kind of thin-walled low-pressure injection molding post forming mechanism.
Background technology
For some strips or thin wall product, general employing be the mode of many Jiao Kou, product predeformation, the Shooting Technique of high-voltage high-speed, to improve the problem of deformation of products and aspect of performance, but which die cost is high, and predeformation has a big risk, at the bottom of product percent of pass, die life declines, product size is unstable, and qualification rate is low, and local can produce shrink and overlap.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, and a kind of thin-walled low-pressure injection molding post forming mechanism is provided, by recompressing the function of product after product injection mo(u)lding, shaping rear interiors of products residual stress is low, thus Stress Release is little, deformation of products is little, and in formed product process, technique adjustment scope is large, easily reach high profile tolerance, the requirement of high flatness.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of thin-walled low-pressure injection molding post forming mechanism, comprise front die component and lower mold assemblies, described front die component comprises upper mounted plate, caster and hot flow path, in the front end of hot flow path, needle is set, described caster is fixed on upper mounted plate, hot flow path is arranged in master mold, described lower mold assemblies includes bottom plate, back-up block and male template, described back-up block is fixed on bottom plate, treat that the product of injection moulding is between male template and caster, it is characterized in that, this lower mold assemblies also includes post forming device, under described post forming device is positioned at male die core, material enters mold cavity by hot flow path, injecting glue is stopped after full die cavity to be filled, complete first time filling, hot flow path fuel tap controls, needle close after post forming device moved upward second time forming action.
The measure taked for optimizing such scheme specifically comprises:
In above-mentioned a kind of thin-walled low-pressure injection molding post forming mechanism, described post forming device includes jacking block, oil cylinder, balance weight and limited block, described oil cylinder is positioned at back-up block, described jacking block is connected with oil cylinder, balance weight is positioned on jacking block, and the hydraulic oil cylinder driving jacking block described after completing of first time injecting glue up moves, when moving to limited block cooperation position, limited block just carries out spacing to jacking block movement position, jacking block stop motion.
In above-mentioned a kind of thin-walled low-pressure injection molding post forming mechanism, described balance weight is dismountable bottom being fixed on jacking block.
Compared with prior art, the utility model has the advantage of the core of this mould and the mode of jacking block employing through hole mold insert, jacking block adopts the mode of hydraulic oil cylinder driving, can move up and down, and the athletic meeting of jacking block drives the change of die cavity thickness, and oil cylinder is stroke is controlled, thus the thickness of product being formed to the change of controlled wall thickness, injection pressure is little, and pressurize is even, shaping rear interiors of products residual stress is low, and deformation of products is little; In formed product process, technique adjustment scope is large, easily reaches high profile tolerance, the requirement of high flatness, and during low-pressure injection molding, inner pressure uniform distribution, product residue stress is little, and the distortion of product is little, thus can reduce production cost significantly, has good practicality
Accompanying drawing explanation
Fig. 1 is this thin-walled low-pressure injection molding post forming mechanism overall structure schematic diagram.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
In figure, front die component 1; Lower mold assemblies 2; Upper mounted plate 3; Caster 4; Hot flow path 5; Needle 6; Bottom plate 7; Back-up block 8; Male template 9; Product 10; Post forming device 11; Jacking block 12; Oil cylinder 13; Balance weight 14; Limited block 15.
As shown in Figure 1, this thin-walled low-pressure injection molding post forming mechanism, comprise front die component 1 and lower mold assemblies 2, front die component 1 comprises upper mounted plate 3, caster 4 and hot flow path 5, in the front end of hot flow path 5, needle 6 is set, caster 4 is fixed on upper mounted plate 3, hot flow path 5 is arranged in master mold, lower mold assemblies 2 includes bottom plate 7, back-up block 8 and male template 9, back-up block 8 is fixed on bottom plate 7, treat that the product 10 of injection moulding is between male template 9 and caster 4, this lower mold assemblies 2 also includes post forming device 11, under post forming device 11 is positioned at male die core, material enters mold cavity by hot flow path 5, injecting glue is stopped after full die cavity to be filled, complete first time filling, hot flow path 5 fuel tap controls, needle 6 close rear post forming device 11 moved upward second time forming action, post forming device 11 includes jacking block 12, oil cylinder 13, balance weight 14 and limited block 15, oil cylinder 13 is positioned at back-up block 8, jacking block 12 is connected with oil cylinder 13, balance weight 14 is positioned on jacking block 12, the oil cylinder 13 described after completing of first time injecting glue drives jacking block 12 up to move, when moving to limited block 15 cooperation position, limited block 15 just carries out spacing to jacking block 12 movement position, jacking block 12 stop motion, balance weight 14 is dismountable bottom being fixed on jacking block 12, like this can according to the balance weight 14 needing replacing suitable of actual product 10 thickness, also namely balance weight 14 highly can control actual product 10 thickness.
When implementing the technique of this thin-walled low-pressure injection molding post forming mechanism, step is as follows:
The first step: when mill run will change thin-walled low-pressure injection molding into, product 10 needs to do some to be improved, and these improvement can't affect the function of product 10, but can be applicable to the requirement of thin-walled low-pressure injection molding technology;
Second step: carry out CAE software sunykatuib analysis to the product 10 after optimizing, revise product 10 according to analysis result, make the product after optimization 10, its quality and aspect of performance meet the requirements of the customers
3rd step: the key component of this technology is realized by mould inside structure exactly, and material enters mold cavity by the needle 6 of hot flow path 5, stops injecting glue after full die cavity to be filled, complete first time filling, end-of-fill for the first time, controlled by hot flow path 5 fuel tap, needle 6 is closed; Now product 10 meat is thick is that T is (by balance weight 14 height, change T size), because oil cylinder 13 is connected with jacking block 12, after injecting glue completes, oil cylinder 13 drives jacking block 12 up to move, when limited block 15 moves to cooperation position, jacking block 12 stop motion, jacking block 12 move distance L=product original depth T-product final thickness T ', after product 10 thinning action completes, unnecessary defective material can be overflowed by flash groove, mould die sinking completes shaping;
4th step: after Mould Machining manufacture completes, process conditions when project team technologist simulates according to CAE, carry out injection moulding checking, during according to injection mo(u)lding, actual defect, the technological parameter of injection moulding is revised, numerical value will be repaiied file, as the reference of follow-up like product 10, also to carry out three coordinate <CMM> to the product 10 of range estimation OK to detect, according to the defect in the testing result of trial product 10 first, mould is rectified and improved, product 10 after rectification is be sure of again, detect through three coordinates (CMM), second time trial product 10 meets customer demand substantially.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from the scope that spirit of the present utility model defines.
Claims (3)
1. a thin-walled low-pressure injection molding post forming mechanism, comprise front die component and lower mold assemblies, described front die component comprises upper mounted plate, caster and hot flow path, in the front end of hot flow path, needle is set, described caster is fixed on upper mounted plate, hot flow path is arranged in master mold, described lower mold assemblies includes bottom plate, back-up block and male template, described back-up block is fixed on bottom plate, treat that the product of injection moulding is between male template and caster, it is characterized in that, this lower mold assemblies also includes post forming device, under described post forming device is positioned at male die core, material enters mold cavity by hot flow path, injecting glue is stopped after full die cavity to be filled, complete first time filling, hot flow path fuel tap controls, needle close after post forming device moved upward second time forming action.
2. a kind of thin-walled low-pressure injection molding post forming mechanism according to claim 1, it is characterized in that, described post forming device includes jacking block, oil cylinder, balance weight and limited block, described oil cylinder is positioned at back-up block, and described jacking block is connected with oil cylinder, and balance weight is positioned on jacking block, the hydraulic oil cylinder driving jacking block described after completing of first time injecting glue up moves, when moving to limited block cooperation position, limited block just carries out spacing to jacking block movement position, jacking block stop motion.
3. a kind of thin-walled low-pressure injection molding post forming mechanism according to claim 2, it is characterized in that, described balance weight is dismountable bottom being fixed on jacking block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520583304.5U CN204955262U (en) | 2015-08-05 | 2015-08-05 | Thin wall low pressure secondary forming mechanism that moulds plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520583304.5U CN204955262U (en) | 2015-08-05 | 2015-08-05 | Thin wall low pressure secondary forming mechanism that moulds plastics |
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| Publication Number | Publication Date |
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| CN204955262U true CN204955262U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520583304.5U Active CN204955262U (en) | 2015-08-05 | 2015-08-05 | Thin wall low pressure secondary forming mechanism that moulds plastics |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034244A (en) * | 2015-08-05 | 2015-11-11 | 嘉兴信元精密模具科技有限公司 | Thin wall low-pressure injection molding secondary forming mechanism |
| CN109624350A (en) * | 2017-10-09 | 2019-04-16 | 苏州易昌泰塑胶有限公司 | A kind of the manufacture mold and its manufacturing method of notebook computer shell |
-
2015
- 2015-08-05 CN CN201520583304.5U patent/CN204955262U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034244A (en) * | 2015-08-05 | 2015-11-11 | 嘉兴信元精密模具科技有限公司 | Thin wall low-pressure injection molding secondary forming mechanism |
| CN109624350A (en) * | 2017-10-09 | 2019-04-16 | 苏州易昌泰塑胶有限公司 | A kind of the manufacture mold and its manufacturing method of notebook computer shell |
| CN109624350B (en) * | 2017-10-09 | 2023-09-12 | 苏州复盈新材股份有限公司 | Manufacturing mold and manufacturing method for notebook shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171213 Address after: Anji County, Zhejiang province 313300 Huzhou City Dipu Street Tianhuangping Road 1 building Patentee after: Zhejiang Xinzheng Precision Technology Co., Ltd. Address before: 314031 Jia Chuang Road, Xiuzhou industrial district, Jiaxing, Zhejiang Province, No. 1711 Patentee before: Jiaxing Xinyuan Precision Mould Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |