CN203844096U - No-flash mould for producing engine cylinder gasket silica gel series - Google Patents
No-flash mould for producing engine cylinder gasket silica gel series Download PDFInfo
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- CN203844096U CN203844096U CN201320874968.8U CN201320874968U CN203844096U CN 203844096 U CN203844096 U CN 203844096U CN 201320874968 U CN201320874968 U CN 201320874968U CN 203844096 U CN203844096 U CN 203844096U
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- mould
- silica gel
- engine cylinder
- flash
- injection molding
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- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a no-flash mould for producing engine cylinder gasket silica gel series. The no-flash mould comprises an upper mould and a lower mould, wherein the lower mould is internally provided with sloping edges at both sides of an injection moulding cavity, and both sides of the injection moulding cavity support against the contact part between the upper mould and the lower mould; because large contact surface between the upper mould and the lower mould causes a flash product, the problem can be solved by only reducing the contact surface between the upper mould and the lower mould. Thus, the peripheries of the inner sides of injection cavities support against the contact surface between the upper mould and the lower mould and then are connected with the contact surface through the sloping edges; in addition, an exhaust groove is formed in the middle of each mould, the exhaust grooves are communicated with the injection cavities, so that the air inside the injection cavities can be discharged when the rubber is injected.
Description
Technical field
The utility model relates to a kind of non-trimming mould of producing engine cylinder ring silica gel series.
Background technology
As shown in Fig. 1～Fig. 2, the mould of traditional production engine cylinder ring silica gel series, near the side of injection molding cavity, be provided with flash gutters 3, because while being patrix 1 and counterdie 2 matched moulds, due to patrix 1 and counterdie 2 contact-making surfaces larger, when injection molding cavity is injected rubber, this rubber easily overflows at patrix 1 and counterdie 2 contact-making surfaces, therefore, the object that flash gutters 3 is set is the rubber that storage is overflowed, and makes after product depanning by scissors etc., overlap to be removed.Although above-mentioned design has solved the problem of removing of overlap after product depanning, but the existence of overlap itself is exactly the waste to material, in addition, overlap also needs scissors etc. to remove, and how, in Design of Dies, overlap is also reduced as much as possible or remove, even if there is overlap, also only need very easy step to be removed, so not only can reduce follow-up operation, also the utilization rate of material is had to great contribution.
Utility model content
For above-mentioned technological deficiency, the utility model proposes a kind of non-trimming mould of producing engine cylinder ring silica gel series.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows:
A non-trimming mould of producing engine cylinder ring silica gel series, comprises upper die and lower die, in described counterdie, in injection molding cavity both sides, is provided with hypotenuse, and the contact site of described upper die and lower die is withstood in the both sides of described injection molding cavity.
Further, the middle part at mould, is provided with air discharge duct, described air discharge duct and each injection molding cavity UNICOM.
Further, the distance between the minimum point of described hypotenuse and the contact site of upper die and lower die is 0.03mm.
The utility model is that beneficial effect is, because the reason of overlap product is the great problem of contact-making surface due to upper and lower mould, therefore only need the contact-making surface reducing between the two just can address the above problem, therefore for the periphery of the inner side of injecting cavity, withstand the contact-making surface between upper die and lower die, then by hypotenuse, be connected with it, at the middle part of mould designing and arranging air drain, this air discharge duct and each injecting cavity UNICOM, can get rid of the air in chamber while making to inject rubber in addition.
Accompanying drawing explanation
Fig. 1 is the structure chart of existing mold;
Fig. 2 is the structure chart of existing flash gutters;
Fig. 3 is die structure dwg of the present utility model;
Fig. 4 is the enlarged drawing of mold injects of the present utility model chamber module;
Fig. 5 is die structure dwg of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As depicted in figs. 1 and 2, the mould of traditional production engine cylinder ring silica gel series, near the side of injection molding cavity, be provided with flash gutters 3, because while being patrix 1 and counterdie 2 matched moulds, due to patrix 1 and counterdie 2 contact-making surfaces larger, when injection molding cavity is injected rubber, this rubber easily overflows at patrix 1 and counterdie 2 contact-making surfaces, therefore, the object that flash gutters 3 is set is the rubber that storage is overflowed, and makes by scissors, overlap to be cut off after product depanning.Although above-mentioned design has solved the problem of removing of overlap after product depanning, the existence of overlap itself is exactly the waste to material, and in addition, overlap also needs scissors etc. to remove.Through a large amount of, attempt, find to occur that overlap is because contact area between upper and lower mould is excessive, therefore only the contact area between upper and lower mould need to be reduced to the problem that can solve overlap.As shown in Fig. 3～Fig. 5, for the utility model is a kind of, produce the non-trimming mould of engine cylinder ring silica gel series, comprise patrix 1, counterdie 2, in described counterdie 2, the injection molding cavity both sides of injecting cavity module 4 are provided with hypotenuse 5, for this injecting cavity module 4 as shown in Figure 4, the contact site of described upper die and lower die is withstood in described injection molding cavity both sides.Due to the periphery of the inner side of injecting cavity, catch up with mould and contact, it changes face contact into a some contact, and its seal degree will be better than the tightness of face contact greatly.Distance between the minimum point of described hypotenuse and the contact site of upper die and lower die is 0.03mm, and overlap is reduced in a large number, even if there is overlap, between this overlap and workpiece, is also very thin connecting portion, is easy to pull apart by craft.Therefore preferably, due to the enhancing due to tightness, at the middle part of mould, be provided with air discharge duct, described air discharge duct and each injection molding cavity UNICOM, while making injection moulding, the air of injection molding cavity can be got rid of by this air discharge duct, has reduced the problem that has bubble in traditional product.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, without departing from the concept of the premise utility; can also make some improvements and modifications, these improvements and modifications also should be considered as in the utility model protection domain.
Claims (1)
1. a non-trimming mould of producing engine cylinder ring silica gel series, it is characterized in that, comprise upper die and lower die, in described counterdie, in injection molding cavity both sides, be provided with hypotenuse, the contact site of described upper die and lower die is withstood in the both sides of described injection molding cavity, and the middle part at mould, is provided with air discharge duct, described air discharge duct and each injection molding cavity UNICOM, the distance between the minimum point of described hypotenuse and the contact site of upper die and lower die is 0.03mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874968.8U CN203844096U (en) | 2013-12-17 | 2013-12-17 | No-flash mould for producing engine cylinder gasket silica gel series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874968.8U CN203844096U (en) | 2013-12-17 | 2013-12-17 | No-flash mould for producing engine cylinder gasket silica gel series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203844096U true CN203844096U (en) | 2014-09-24 |
Family
ID=51557152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320874968.8U Expired - Fee Related CN203844096U (en) | 2013-12-17 | 2013-12-17 | No-flash mould for producing engine cylinder gasket silica gel series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203844096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707463A (en) * | 2013-12-17 | 2014-04-09 | 宁波无边橡塑有限公司 | Burr-free mould for producing engine air cylinder gasket silica gel series |
-
2013
- 2013-12-17 CN CN201320874968.8U patent/CN203844096U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707463A (en) * | 2013-12-17 | 2014-04-09 | 宁波无边橡塑有限公司 | Burr-free mould for producing engine air cylinder gasket silica gel series |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20171217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |