CN102717478A - Method and die for eccentricity prevention of injection molding and rubber coating of slender rod - Google Patents
Method and die for eccentricity prevention of injection molding and rubber coating of slender rod Download PDFInfo
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- CN102717478A CN102717478A CN2012102353526A CN201210235352A CN102717478A CN 102717478 A CN102717478 A CN 102717478A CN 2012102353526 A CN2012102353526 A CN 2012102353526A CN 201210235352 A CN201210235352 A CN 201210235352A CN 102717478 A CN102717478 A CN 102717478A
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- guide ring
- slender rod
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Abstract
The invention discloses a method and a die for eccentricity prevention of injection molding and rubber coating of a slender rod. A shunting shuttle which is of a bullet shape is arranged at the front end of a slender rod workpiece, the surface of the shunting shuttle is provided with a plurality of spiral shunting trenches, and the shunting shuttles are arranged at one ends of the die cavities of a moving die core and a fixed die core and communicated with the runner of the fixed die core; a guide ring capable of moving is sleeved on the body of the slender rod is sleeved by the guide ring capable of moving, and the guide ring isthe body of the slender rod and arranged in the die cavities of the moving die core and the fixed die core and can move in the die cavities; and then, the shunting shuttles, the guide ring and the slender rod workpiece are placed into the die cavity for injection molding production, then, the die is opened after injection molding is finished, and the shunting shuttles, the guide ring and the slender rod workpiece are taken out and separated. The top of the slender rod is additionally provided with the shunting shuttle, so that sol rubber uniformly enters the die cavity of the die after being shunted by the shunting shuttle. Thus, not only the top end of the slender rod is fixed effectively, but also rubber is uniformly introduced in the rubber introduction process. The problem that the slender rod is eccentric can be effectively solved in the slender rod rubber coating process, and the rejection rate of plastic injection parts can be greatly reduced.
Description
Technical field
The present invention discloses anti-partial method of a kind of elongate rod injection moulding encapsulate and mould, can prevent effectively that down spare is eccentric, the injection mold technical field.
Background technology
The elongate rod encapsulate requires encapsulate distance, wall thickness uniformity; In actual production process; Because the elongate rod bending strength is poor, be placed on and carry out encapsulate in the mould, there are following several kinds of situation all to cause product eccentric and scrap: to advance glue from the side of elongate rod; Elongate rod can be advanced to produce flexural deformation under the glue pressure in side direction, causes off-centre.Advance glue from the elongate rod top, do not have the strong point in the middle of the elongate rod, the self gravitation effect under or elongate rod have under some slight deformation situation, the distortion of elongate rod is strengthened gradually, make elongate rod produce off-centre at last, generation is scrapped.More than two kinds of situation can cause accepted product percentage very low, produce a large amount of wastes.
Summary of the invention
The present invention provides a kind of elongate rod injection moulding encapsulate to prevent partial method, the eccentricity issues that has occurred easily when having solved elongate rod injection moulding encapsulate.
The invention also discloses the anti-eccentric mould of elongate rod injection moulding encapsulate, in elongate rod injection moulding encapsulation process, can prevent effectively that down spare is eccentric, greatly improve the qualification rate of product.
Elongate rod injection moulding encapsulate disclosed by the invention is prevented partial method, and solution is following:
Front end at the elongate rod workpiece is installed a spreader, and described spreader is the bullet type, and its surface has several spiral splitter boxs, and spreader is installed in die cavity one end of moving-mould-core and cover half core, is communicated with the runner of cover half core; The shaft of elongate rod puts the removable guide ring; The guide ring device can move at die cavity in the die cavity of moving-mould-core and cover half core, will be put into together then to carry out injection moulding production in the mold cavity; Die sinking after injection moulding is accomplished; To take out together, separate spreader, guide ring with the elongate rod workpiece, promptly accomplish elongate rod workpiece injection moulding encapsulate injection moulding process.
Realize the mould of the anti-partial method of elongate rod injection moulding encapsulate of the present invention, it is characterized in that:
Comprise spreader, guide ring and injection molding moving-mould-core and cover half core; Described spreader is the bullet type, and its surface has several spiral splitter boxs; Spreader is installed in die cavity one end of moving-mould-core and cover half core, is communicated with the runner of cover half core; The guide ring device can move at die cavity in the die cavity of moving-mould-core and cover half core.
Good effect of the present invention is: the top of elongate rod adds a spreader, makes colloidal sol get into mold cavity uniformly through spreader shunting back earlier.So both effectively fixed the elongate rod top, and can make in advancing the glue process again that into glue was even.In the elongate rod encapsulation process, can effectively solve the eccentric problem of elongate rod, significantly reduce the percent defective of moulding.
Description of drawings
Fig. 1 is a structural principle of the present invention;
1. spreaders among the figure, 2. moving-mould-core, 3. runner, 4. elongate rod, 5. guide ring, 6. cover half core, 7. thimble, 8. die cavity.
The specific embodiment
According to shown in Figure 1, mould of the present invention comprises last spreader 1, guide ring 5 and the injection molding moving-mould-core 2 and the cover half core 6 that are installed in elongate rod 4; Described spreader 1 is the bullet type, and its surface has several spiral splitter boxs (in the present embodiment being three); Spreader 1 is installed in die cavity 8 one ends of moving-mould-core 2 and cover half core 6, is communicated with the runner 3 of cover half core 6; Guide ring 5 devices can move at die cavity 8 in the die cavity 8 of moving-mould-core 2 and cover half core 6.
Front end in elongate rod 4 is installed a spreader 1, and guide ring 5 is sleeved on elongate rod 4 afterbodys, and device is in the die cavity 8 of moving-mould-core 2; Mold-closing injection, die sinking after cooling, elongate rod 4 is together taken out through thimble 7 jack-up of cover half core 6 bottoms together with spreader 1, separates elongate rod 4 with spreader 1, guide ring 5 then, has accomplished the production of elongate rod encapsulated products.
Claims (2)
1. an elongate rod injection moulding encapsulate is prevented partial method; May further comprise the steps: the front end at the elongate rod workpiece is installed a spreader; Described spreader is the bullet type; Its surface has several spiral splitter boxs, and spreader is installed in die cavity one end of moving-mould-core and cover half core, is communicated with the runner of cover half core; The shaft of elongate rod puts the removable guide ring; The guide ring device is in the die cavity of moving-mould-core and cover half core; Can move at die cavity, be put into together then and carry out injection moulding production in the mold cavity, die sinking was taken out after injection moulding was accomplished; Separate spreader, guide ring with the elongate rod workpiece, promptly accomplish elongate rod workpiece injection moulding encapsulate injection moulding process.
2. an elongate rod injection moulding encapsulate is prevented eccentric mould, it is characterized in that:
Comprise spreader, guide ring and injection molding moving-mould-core and cover half core; Described spreader is the bullet type, and its surface has several spiral splitter boxs; Spreader is installed in die cavity one end of moving-mould-core and cover half core, is communicated with the runner of cover half core; The guide ring device can move at die cavity in the die cavity of moving-mould-core and cover half core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102353526A CN102717478A (en) | 2012-07-09 | 2012-07-09 | Method and die for eccentricity prevention of injection molding and rubber coating of slender rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102353526A CN102717478A (en) | 2012-07-09 | 2012-07-09 | Method and die for eccentricity prevention of injection molding and rubber coating of slender rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102717478A true CN102717478A (en) | 2012-10-10 |
Family
ID=46943415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102353526A Pending CN102717478A (en) | 2012-07-09 | 2012-07-09 | Method and die for eccentricity prevention of injection molding and rubber coating of slender rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102717478A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426772A (en) * | 2016-09-28 | 2017-02-22 | 平田精密器材(深圳)有限公司 | Anti-eccentric injection molding method and device |
| US10588642B2 (en) * | 2014-05-15 | 2020-03-17 | Gauthier Biomedical, Inc. | Molding process and products formed thereby |
| CN114347400A (en) * | 2021-12-20 | 2022-04-15 | 安徽中鼎橡塑制品有限公司 | Steering gear shell mold and using method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4017961A (en) * | 1973-04-23 | 1977-04-19 | Merit Plastics, Inc. | Method of producing drag on an operating rod |
| CN1052275A (en) * | 1989-12-02 | 1991-06-19 | 陶特股份有限公司 | The injection moulding of thin-walled elongated tubular product such spare |
| US20020190430A1 (en) * | 2001-03-28 | 2002-12-19 | Mitsubishi Cable Industries, Ltd. | Molding method and apparatus for resin long body |
| CN202656426U (en) * | 2012-07-09 | 2013-01-09 | 山东浩然特塑有限公司 | Mould for injection sol coating and off-center prevention of long and thin rod |
-
2012
- 2012-07-09 CN CN2012102353526A patent/CN102717478A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4017961A (en) * | 1973-04-23 | 1977-04-19 | Merit Plastics, Inc. | Method of producing drag on an operating rod |
| CN1052275A (en) * | 1989-12-02 | 1991-06-19 | 陶特股份有限公司 | The injection moulding of thin-walled elongated tubular product such spare |
| US20020190430A1 (en) * | 2001-03-28 | 2002-12-19 | Mitsubishi Cable Industries, Ltd. | Molding method and apparatus for resin long body |
| CN202656426U (en) * | 2012-07-09 | 2013-01-09 | 山东浩然特塑有限公司 | Mould for injection sol coating and off-center prevention of long and thin rod |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10588642B2 (en) * | 2014-05-15 | 2020-03-17 | Gauthier Biomedical, Inc. | Molding process and products formed thereby |
| CN106426772A (en) * | 2016-09-28 | 2017-02-22 | 平田精密器材(深圳)有限公司 | Anti-eccentric injection molding method and device |
| CN114347400A (en) * | 2021-12-20 | 2022-04-15 | 安徽中鼎橡塑制品有限公司 | Steering gear shell mold and using method |
| CN114347400B (en) * | 2021-12-20 | 2023-10-03 | 安徽中鼎橡塑制品有限公司 | Steering gear shell mold and use method |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |