CN221249650U - Injection molding's OCV oil blanket mould - Google Patents
Injection molding's OCV oil blanket mould Download PDFInfo
- Publication number
- CN221249650U CN221249650U CN202322461453.1U CN202322461453U CN221249650U CN 221249650 U CN221249650 U CN 221249650U CN 202322461453 U CN202322461453 U CN 202322461453U CN 221249650 U CN221249650 U CN 221249650U
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- die
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- mold
- oil seal
- protrusion
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000002991 molded plastic Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to the technical field of oil seal molds, in particular to an injection molding OCV oil seal mold. The OCV oil seal die comprises a lower die core, a middle die core and an upper die core which are encircled to form an annular die cavity, wherein a communication injection channel is formed in the upper die core, the lower die core comprises a bearing seat and a die post fixedly connected to the bearing seat, the middle die core is sleeved on the die post, the upper die core is clamped on the middle die core and the die post, and a glue inlet channel which is communicated with the injection channel and the die cavity is formed between the upper die core and the die post; an annular flash cavity communicated with the die cavity is arranged between the upper die core and the middle die core; the oil seal die solves the problem that the lip of an oil seal is lack of materials or is not filled enough, and improves the yield of oil seal molding; the oil seal die has the advantages of small number of die cores, simple operation and convenient disassembly; the tightness after the die assembly is good, and the yield of the oil seal molding is ensured.
Description
Technical Field
The utility model relates to the technical field of oil seal molds, in particular to an injection molding OCV oil seal mold.
Background
Hydraulic control valve (OCV) oil seals are a common seal in engines.
The current production mode of OCV oil seals is compression molding, and compression molding needs long vulcanization time, and the flash that the shaping oil seal produced is more thicker moreover, leads to production inefficiency and consume more resource material.
Chinese patent CN202021928524.4 discloses an oil seal injection molding die, publication No. CN213500527U, the oil seal die comprises an upper die and a lower die, the upper die and the lower die enclose a die cavity together, the die cavity is annular, a glue injection hole is formed in the upper die, the glue injection hole is located at the center of a circle enclosed by the die cavity, a glue injection channel is arranged between the upper die and the lower die, and the glue injection hole is communicated to the die cavity through the glue injection channel. However, the oil seal mold has some defects: in order to better mold the oil seal, when the molds are closed, the contact surfaces between the molds are tightly pressed without gaps, when the molten rubber is filled in the mold cavities, the phenomenon of shortage or insufficient filling at the lips of the oil seal is easy to occur, and then the oil seal is failed to mold, the sealing performance of the molded oil seal is poor, and the yield of oil seal production is reduced.
Disclosure of utility model
In order to solve the problems of the prior art, the utility model provides the OCV oil seal die for injection molding, which solves the problems of shortage or insufficient filling at the lip of an oil seal and improves the molding yield of the oil seal.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the OCV oil seal die comprises a lower die core, a middle die core and an upper die core which are encircled to form an annular die cavity, wherein a communication injection channel is formed in the upper die core, the lower die core comprises a bearing seat and a die post fixedly connected to the bearing seat, the middle die core is sleeved on the die post, the upper die core is clamped on the middle die core and the die post, and a glue inlet channel which is communicated with the injection channel and the die cavity is formed between the upper die core and the die post; an annular flash cavity communicated with the die cavity is arranged between the upper die core and the middle die core.
By adopting the structural design, after the die is closed, when the die cavity is filled with the rubber in a molten state, the rubber can overflow into the flash cavity; after the product is molded, an operator opens the mold to eject the molded oil seal by using an ejection tool, and finally the operator cuts off the flash of the lip part of the oil seal, so that the phenomenon of shortage or insufficient filling of the lip part of the oil seal is avoided, and the yield of the finished oil seal is ensured.
Preferably, an annular notch is formed in the outer side wall of the die column, a circular recess is formed in the upper surface of the die column, a first protrusion inserted into the notch and a second protrusion inserted into the recess are fixedly connected to the lower surface of the upper die core, the section of the second protrusion is trapezoid, and the recess, the notch, the first protrusion, the second protrusion and the middle die core are surrounded to form a die cavity; the injection molding channel penetrates through the second bulge, and the second bulge and the concave are surrounded to form a glue inlet channel.
By adopting the structural design, the first bulge, the notch, the second bulge and the dent limit the formed shape of the OCV oil seal; the parts of the OCV oil seal can be placed in the concave and the notch.
Preferably, the bearing seat is clamped on the lower template, the lower template supports the middle template, and the middle template supports the upper template; a middle mold core is arranged in the middle mold plate in a penetrating way, and an upper mold core is arranged in the upper mold plate in a penetrating way; annular third bulges are fixedly connected on the outer side walls of the middle mold core and the upper mold core, and grooves matched with the third bulges are fixedly connected on the inner side walls of the middle mold plate and the upper mold plate.
By adopting the structural design, the template can limit the relative distance of the mold cores, ensure the accurate alignment of the mold cores during mold closing, and tightly attach the contact surfaces of the mold cores; after the upper mold core is compressed, the mold parts can also be compressed.
Preferably, the lower surface of the upper mold core is fixedly connected with a positioning protrusion, and the upper surface of the middle mold core is provided with a clamping groove matched with the positioning protrusion.
By adopting the structural design, the phenomenon that the mold core cannot deviate after the mold core is assembled is guaranteed, and the tightness after the mold is assembled is guaranteed.
Compared with the prior art, the utility model has the beneficial effects that:
1) And a flash cavity is reserved in the die, after the OCV oil seal is formed, an operator cuts off the flash of the lip part of the oil seal, so that the phenomenon that the lip part of the oil seal is not deficient in material shortage or filling is avoided, and the yield of finished oil seal products is ensured.
2) The number of mold cores of the mold is small, the operation is simple, and the disassembly is convenient; the tightness after the die assembly is good, and the yield of the oil seal molding is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a partially enlarged schematic illustration of the structure of the present utility model;
FIG. 3 is an exploded view of the present utility model;
Detailed Description
Referring to fig. 1, 2 and 3, the present utility model provides a technical solution: the OCV oil seal die comprises a lower die core 11, a middle die core 21 and an upper die core 31 which surround to form an annular die cavity 4, wherein a communication injection molding channel 32 is formed in the upper die core 31, the lower die core 11 comprises a bearing seat 13 and a die column 12 fixedly connected to the bearing seat 13, the middle die core 21 is sleeved on the die column 12, the upper die core 31 is clamped on the middle die core 21 and the die column 12, and a glue inlet channel 33 which is communicated with the injection molding channel 32 and the die cavity 4 is formed between the upper die core 31 and the die column 12; an annular flash cavity 6 communicated with the die cavity 4 is arranged between the upper die core 31 and the middle die core 21.
The bearing seat 13 is clamped on the lower template 1, the lower template 1 supports the middle template 2, and the middle template 2 supports the upper template; a middle mold core 21 is arranged in the middle mold plate 2 in a penetrating way, and an upper mold core 31 is arranged in the upper mold plate 3 in a penetrating way; annular third bulges 51 are fixedly connected to the outer side walls of the middle mold core 21 and the upper mold core 31, and grooves 52 matched with the third bulges 51 are fixedly connected to the inner side walls of the middle mold 2 and the upper mold plate 3.
An annular gap 14 is formed in the outer side wall of the upper end of the die column 12, an oil seal framework is placed in the gap 14, a circular recess 15 is formed in the upper surface of the die column 12, a first protrusion 34 inserted into the gap 14 and a second protrusion 35 inserted into the recess 15 are fixedly connected to the lower surface of the upper die core 31, the cross section of the second protrusion 35 is in an inverted trapezoid shape, and the recess 15, the gap 14, the first protrusion 34, the second protrusion 35 and the middle die core 21 are surrounded to form a die cavity 4; the injection molding channel 32 penetrates through the second protrusion 35, and the second protrusion 35 and the recess 15 surround to form an adhesive inlet channel 33.
As a further improvement of the present utility model, the lower surface of the upper mold core 31 is fixedly connected with a positioning protrusion 36, and the upper surface of the middle mold core 21 is provided with a clamping groove 26 matched with the positioning protrusion 36.
Working principle: firstly, an operator clamps and embeds a lower mold core 11 into a lower mold plate 1, a middle mold core 21 is sleeved on a mold column 12, then a middle mold plate 2 is sleeved on the middle mold core 21, an oil seal framework is placed in a notch 14, an oil seal spring is placed in a recess 15, and then the upper mold core 31 and an upper mold plate 3 are assembled; then, injection molding is performed, and when the mold cavity 4 is filled with the rubber in a molten state, the rubber overflows into the flash cavity 6; after the product is molded, an operator opens the mold to remove the upper mold plate 3, the upper mold core 31 and the middle mold plate 2, and when the operator removes the middle mold core 21, the molded oil seal is left in the middle mold core 21, and the molded oil seal is ejected by an ejection tool to remove the product; the lower mold core 11 keeps still all the time, and the mold sprays a release agent after taking down the product; and finally, an operator cuts off the flash of the lip part of the oil seal, so that the phenomenon of shortage or insufficient filling of the lip part of the oil seal is avoided, and the yield of finished products of the oil seal is ensured.
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the utility model, without affecting the effect or achievement of the objective. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
The utility model has been described above with reference to preferred embodiments, but the scope of the utility model is not limited thereto, and any and all technical solutions falling within the scope of the claims are within the scope of the utility model. Various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.
Claims (4)
1. The utility model provides an injection molding's OCV oil blanket mould, includes lower mold core (11), well mould core (21) and last mold core (31) that surround and form annular die cavity (4), the intercommunication is moulded plastics and is said (32), its characterized in that in the inside seting up of last mold core (31): the lower mold core (11) comprises a bearing seat (13) and a mold column (12) fixedly connected to the bearing seat (13), the middle mold core (21) is sleeved on the mold column (12), the upper mold core (31) is clamped on the middle mold core (21) and the mold column (12), and a glue inlet channel (33) which is communicated with the injection molding channel (32) and the mold cavity (4) is arranged between the upper mold core (31) and the mold column (12); an annular flash cavity (6) communicated with the die cavity (4) is arranged between the upper die core (31) and the middle die core (21).
2. The injection molded OCV oil seal mold of claim 1 wherein: an annular notch (14) is formed in the outer side wall of the die column (12), a circular recess (15) is formed in the upper surface of the die column (12), a first protrusion (34) inserted into the notch (14) and a second protrusion (35) inserted into the recess (15) are fixedly connected to the lower surface of the upper die core (31), the section of the second protrusion (35) is trapezoid, and the recess (15), the notch (14), the first protrusion (34), the second protrusion (35) and the middle die core (21) are surrounded to form a die cavity (4); the injection molding channel (32) penetrates through the second protrusion (35), and the second protrusion (35) and the recess (15) are surrounded to form a glue inlet channel (33).
3. The injection molded OCV oil seal mold of claim 1 wherein: the bearing seat (13) is clamped on the lower template (1), the lower template (1) supports the middle template (2), and the middle template (2) supports the upper template; a middle mold core (21) is arranged in the middle mold plate (2) in a penetrating way, and an upper mold core (31) is arranged in the upper mold plate (3) in a penetrating way; annular third bulges (51) are fixedly connected to the outer side walls of the middle die core (21) and the upper die core (31), and grooves (52) matched with the third bulges (51) are fixedly connected to the inner side walls of the middle die core (2) and the upper die plate (3).
4. The injection molded OCV oil seal mold of claim 1 wherein: the lower surface of the upper mold core (31) is fixedly connected with a positioning protrusion (36), and the upper surface of the middle mold core (21) is provided with a clamping groove (26) matched with the positioning protrusion (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322461453.1U CN221249650U (en) | 2023-09-11 | 2023-09-11 | Injection molding's OCV oil blanket mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322461453.1U CN221249650U (en) | 2023-09-11 | 2023-09-11 | Injection molding's OCV oil blanket mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221249650U true CN221249650U (en) | 2024-07-02 |
Family
ID=91662883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322461453.1U Active CN221249650U (en) | 2023-09-11 | 2023-09-11 | Injection molding's OCV oil blanket mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221249650U (en) |
-
2023
- 2023-09-11 CN CN202322461453.1U patent/CN221249650U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |