CN216465938U - Injection molding runner structure capable of preventing ejector pin of mold from inclining - Google Patents
Injection molding runner structure capable of preventing ejector pin of mold from inclining Download PDFInfo
- Publication number
- CN216465938U CN216465938U CN202122829104.1U CN202122829104U CN216465938U CN 216465938 U CN216465938 U CN 216465938U CN 202122829104 U CN202122829104 U CN 202122829104U CN 216465938 U CN216465938 U CN 216465938U
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- thimble
- mold
- ejector pin
- structure capable
- injection molding
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Abstract
The utility model discloses an injection runner structure capable of preventing a mold thimble from deflecting, which comprises a main runner, a sub-runner, a ox horn type sprue and a thimble barrel, wherein the tail part of one exposed end of the thimble barrel is provided with a bowl-shaped arc bottom, the diameter of the arc bottom is more than 2mm larger than that of the thimble, the end part of the thimble matched with the arc bottom is also in an arc shape, and the radian of the end part is smaller than that of the bottom of the thimble barrel.
Description
Technical Field
The utility model relates to the field of injection molds, in particular to the field of runner structures in injection molds.
Background
In the injection molding process of plastic parts, a horn gate is usually used to connect to the cavity. And the ox horn glue mouth formed by the existing ox horn type pouring gate can be forcedly ejected straight and then separated from the rear mold in the ejection process. The ox horn mouth material can generate great reaction elasticity in the process of deformation and straightening, and in order to prevent the ox horn mouth from bouncing off, a section of rubber column is added on the flow channel to be used as a stress part of the thimble before the ox horn mouth is not separated from the rear mold, so as to ensure the smooth demolding of the ox horn mouth. The ejector pin is not large in area, so that the phenomenon of slide is easy to occur when the ejector pin is abutted against the rubber column, poor ejection is caused, and abnormal operation of the die is caused.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the above situation, the present invention aims to provide a technical solution to solve the above problems:
an injection molding runner structure capable of preventing a mold thimble from deflecting comprises a main runner, branch runners and a ox horn type pouring gate, wherein two side branch runners of the main runner are respectively provided with an ejector sleeve rubber column, and the exposed top end part of the ejector sleeve is provided with a bowl-shaped arc bottom.
Furthermore, the diameter of the bowl-shaped circular arc bottom of the thimble cylinder is more than 2mm larger than that of the thimble.
Furthermore, the end part of the thimble matched with the bowl-shaped arc bottom of the thimble tube is also arc-shaped, and the radian of the end part of the thimble is smaller than the arc degree of the bottom of the thimble tube.
According to the scheme of adding the top needle cylinder with the arc-shaped bottom on the sub-runner, the problem that the ejector pin is easy to slide when a product is ejected out due to the injection of the ox horn type sprue injection mold can be effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the gating system of the present invention.
FIG. 2 is a cross-sectional view of the ejector pin barrel structure of the present invention.
Detailed Description
Referring to fig. 1 to 2:
an injection molding runner structure capable of preventing a mold thimble from deflecting comprises a main runner 1, a sub-runner 3, a horn type sprue 2 and a thimble barrel 5, wherein the tail part of one exposed end of the thimble barrel 5 is provided with a bowl-shaped arc bottom 6.
In order to effectively prevent the thimble from sliding and deviating when acting on the thimble barrel 5, the diameter of the bowl-shaped arc bottom 6 of the thimble barrel 5 is more than 2mm larger than that of the thimble.
Meanwhile, in order to further ensure that the bowl-shaped circular arc bottom 6 of the ejector pin cylinder 5 can be well matched with an ejector pin to bear force, the end part of the ejector pin matched with the bowl-shaped circular arc bottom 6 of the ejector pin cylinder 5 is also circular arc-shaped, and the radian of the end part of the ejector pin is smaller than that of the bottom part of the ejector pin cylinder 5, so that the ejector pin can effectively fall into the ejector pin cylinder 5 and play a good ejection role, the ox horn type sprue 2 is safely separated from the product 4, and the mold runs into a normal state.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides a can prevent moulding plastics runner structure of skew of mould thimble, its includes sprue (1), subchannel (3), ox horn formula runner (2), thimble tube (5), its characterized in that: the tail of one exposed end of the top needle cylinder (5) is provided with a bowl-shaped arc bottom (6).
2. The injection molding runner structure capable of preventing the deflection of the ejector pin of the mold as claimed in claim 1, wherein: the diameter of the bowl-shaped circular arc bottom (6) of the thimble tube (5) is more than 2mm larger than that of the thimble.
3. An injection molding runner structure capable of preventing deflection of a mold thimble according to claim 1 or 2, wherein: the end part of the thimble matched with the bowl-shaped arc bottom (6) of the thimble cylinder (5) is also arc-shaped, and the radian is smaller than the arc degree of the bottom of the thimble cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829104.1U CN216465938U (en) | 2021-11-18 | 2021-11-18 | Injection molding runner structure capable of preventing ejector pin of mold from inclining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829104.1U CN216465938U (en) | 2021-11-18 | 2021-11-18 | Injection molding runner structure capable of preventing ejector pin of mold from inclining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216465938U true CN216465938U (en) | 2022-05-10 |
Family
ID=81396880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122829104.1U Active CN216465938U (en) | 2021-11-18 | 2021-11-18 | Injection molding runner structure capable of preventing ejector pin of mold from inclining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216465938U (en) |
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2021
- 2021-11-18 CN CN202122829104.1U patent/CN216465938U/en active Active
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