CN211492622U - Double-runner mold structure - Google Patents
Double-runner mold structure Download PDFInfo
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- CN211492622U CN211492622U CN201922266243.0U CN201922266243U CN211492622U CN 211492622 U CN211492622 U CN 211492622U CN 201922266243 U CN201922266243 U CN 201922266243U CN 211492622 U CN211492622 U CN 211492622U
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Abstract
The utility model relates to the technical field of dies, in particular to a double-flow-passage die structure, which comprises a first die plate and a second die plate; the first template is provided with a first pin body, the second template is provided with an inserting core and a second pin body, the first pin body and the second pin body are positioned in a first through hole of the inserting core, and the second pin body supports the first pin body; the third template and the fourth template are arranged in an enclosing mode to form a second through hole; a gap between the first needle body and the first through hole and a gap between the inserting core and the second through hole are communicated to form a die cavity; the template is provided with a first runner and a second runner, and molten plastic is injected into the cavity of the template through the first runner and the second runner; by means of the supporting and fixing effect of the second needle body on the first needle body, the first needle body is prevented from deflecting and skewing due to the impact of molten plastic, and the injection molding yield of product objects is improved; the two runners improve the injection molding efficiency of the molten plastic injected into the mold cavity and improve the injection molding efficiency of product articles.
Description
Technical Field
The utility model relates to the technical field of mold, especially, disclose a double flow passage mould structure.
Background
In the manufacturing process of plastic products, in order to improve the production efficiency of the plastic products, the plastic products are often subjected to injection molding by using a hot runner mold, the structures of the plastic products are diversified, and the structures of the hot runner mold also need to be matched with the structures of the plastic products correspondingly. In the prior art, a plastic product often needs to be formed with a hole body, a hot runner mold is needed to configure a core column of the formed hole body, and when the aperture of the hole body is small, the core column is easily impacted by injected molten plastic to deflect, so that the plastic product is not formed well. In addition, in the prior art, the mold injects the molten plastic into the mold cavity through one injection hole, so that the injection efficiency of the plastic product is low, and further the efficiency of the plastic product is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects and deficiencies in the prior art, the utility model aims to provide a double-channel mold structure, which prevents the first needle body from deflecting and skewing due to the impact of molten plastic by means of the supporting and fixing action of the second needle body on the first needle body, and improves the injection molding yield of product articles; the two runners improve the injection molding efficiency of the molten plastic injected into the mold cavity and improve the injection molding efficiency of product articles.
In order to achieve the above object, the utility model discloses a double-flow-passage mold structure, which comprises a first mold plate and a second mold plate matched with the first mold plate; the first template is provided with a first needle body, the second template is provided with an inserting core and a second needle body positioned in the inserting core, the inserting core is provided with a first through hole, the free end of the first needle body extends into the first through hole, and the free end of the second needle body extends into the first through hole and supports against the free end of the first needle body; the double-flow-channel mold structure further comprises a third template and a fourth template, the third template and the fourth template are arranged between the first template and the second template, one sides of the third template and the fourth template, which are close to each other, are surrounded to form a second through hole, and the insert core is positioned in the second through hole; a first gap is formed between the first needle body and the inner hole wall of the first perforation, a second gap is formed between the insertion core and the inner hole wall of the second perforation, and the first gap and the second gap are communicated to form a mold cavity for molding a product object; the mold plate is provided with a first runner and a second runner which are used for communicating the mold cavity, and molten plastic is injected into the mold cavity through the first runner and the second runner.
The first runner and the second runner are arranged on the first template and communicated with the second gap, and the first runner and the second runner are symmetrically arranged relative to the central axis of the first needle body.
Furthermore, the first needle body comprises a body and a positioning column connected with the body, and the outer diameter of the body is larger than that of the positioning column; the second needle body is provided with a positioning hole for accommodating a positioning column, and the positioning column is provided with a conical part which is convenient to insert into the positioning hole.
The body is conical, and the outer diameter of one end, close to the positioning column, of the body is smaller than the outer diameter of one end, far away from the positioning column, of the body.
Furthermore, the ferrule is provided with a third gap which is communicated with the first gap and the second gap, and the third gap penetrates through the side wall of the ferrule and the end face of the free end of the ferrule.
The third gaps are arranged in an annular array around the central axis of the first through hole, and the central axis of the first through hole is coincident with the central axis of the ferrule.
Furthermore, the third template is provided with two first clamping blocks located on two sides of the first gap, the fourth template is provided with two first clamping grooves located on two sides of the first gap, and the two first clamping blocks are respectively arranged in the two first clamping grooves.
The first template is provided with two second clamping blocks located on two sides of the first needle body, the third template and the fourth template are provided with second clamping grooves, and the two second clamping blocks are respectively installed in the second clamping groove of the third template and the second clamping groove of the fourth template.
Has the advantages that: when the molten plastic is injected into the mold cavity, the first needle body is prevented from deflecting and skewing due to the impact of the molten plastic by virtue of the jacking and fixing action of the second needle body on the first needle body, and the injection molding yield of a product article is improved; the molten plastic is injected into the mold cavity through the first runner and the second runner, and the two runners improve the injection molding efficiency of the molten plastic in the mold cavity and improve the injection molding efficiency of product articles.
Drawings
Fig. 1 is a perspective view of the double-runner mold structure of the present invention.
Fig. 2 is a top view of the double-runner mold structure of the present invention hiding the first mold plate and the first needle body.
Fig. 3 is an exploded view of the dual-channel mold structure of the present invention.
Fig. 4 is an exploded view of the dual-channel mold structure according to another perspective of the present invention.
Fig. 5 is a perspective view of the ferrule of the present invention.
Fig. 6 is a perspective view of the first needle body and the second needle body of the present invention.
The reference numerals include:
1-first template 2-second template 3-first needle body
4-inserting core 5-second needle body 6-first perforation
7-third template 8-fourth template 9-second perforation
11-first flow channel 12-second flow channel 13-body
14-positioning column 15-third gap 16-first clamping block
17-first slot 18-second block 19-second slot
511-positioning holes.
Detailed Description
For the convenience of those skilled in the art, the embodiments are not mentioned in any way as limiting the invention.
Referring to fig. 1 to 6, the utility model discloses a double-flow-passage mold structure, including first template 1, with first template 1 cooperation second template 2 that uses, first template 1, second template 2 are separated and parallel arrangement each other, and first template 1, second template 2 set up from top to bottom along vertical direction. The first template 1 is provided with a first needle body 3, the first needle body 3 is a substantially straight cylinder, and the second template 2 is provided with an inserting core 4 and a second needle body 5 positioned in the inserting core 4.
The inserting core 4 is provided with a first perforation 6, the first perforation 6 penetrates through the inserting core 4 along the length direction of the inserting core 4, the free end of the first needle body 3 extends into the first perforation 6, the free end of the second needle body 5 extends into the first perforation 6 and supports the free end of the first needle body 3 in an ejection mode, and the first needle body 3 and the second needle body 5 are inserted into the first perforation 6 from the two ends of the first perforation 6 respectively.
The double-channel mold structure further comprises a third template 7 and a fourth template 8, the third template 7 and the fourth template 8 are arranged in the left and right direction along the horizontal direction, the third template 7 and the fourth template 8 are both arranged between the first template 1 and the second template 2, one sides of the third template 7 and the fourth template 8, which are close to each other, are surrounded to form a second through hole 9, and the insert core 4 is positioned in the second through hole 9; the third template 7 and the fourth template 8 are both provided with grooves, and the grooves of the third template 7 and the grooves of the fourth template 8 are combined to form second through holes 9.
The aperture of the first through hole 6 is larger than the outer diameter of the first needle body 3, and a first gap is formed between the outer side surface of the first needle body 3 and the inner hole wall of the first through hole 6; the aperture of the second through hole 9 is larger than the outer diameter of the ferrule 4, a second gap is formed between the outer side surface of the ferrule 4 and the inner hole wall of the second through hole 9, and the first gap and the second gap are communicated to form a mold cavity for molding a product object.
The first template 1, the second template 2, the third template 7 or the fourth template 8 are provided with a first runner 11 and a second runner 12 which are used for communicating the mold cavity, and molten plastic output by the injection molding machine is injected into the mold cavity through the first runner 11 and the second runner 12 respectively.
When the molten plastic is injected into the die cavity, the first needle body 3 is prevented from deflecting and skewing due to the impact of the molten plastic by virtue of the jacking and fixing action of the second needle body 5 on the first needle body 3, and the injection molding yield of product articles is improved; the molten plastic is respectively injected into the mold cavity through the first runner 11 and the second runner 12, and the two runners improve the injection molding efficiency of the molten plastic in the mold cavity and improve the injection molding efficiency of product articles.
The first flow channel 11 and the second flow channel 12 are both arranged on the first template 1, the first flow channel 11 and the second flow channel 12 are communicated with the second gap, and the first flow channel 11 and the second flow channel 12 are symmetrically arranged about the central axis of the first needle body 3. Through the layout arrangement of the two runners, when the molten plastic is injected into the mold cavity, the extrusion force of the molten plastic on the two sides of the first needle body 3 is approximately the same, the first needle body 3 is further ensured to be stably positioned in the first through hole 6, and the probability that the extrusion force of the molten plastic on the two sides of the first needle body 3 is uneven and the deflection is oblique is reduced.
The first needle body 3 comprises a body 13 and a positioning column 14 connected with the body 13, the positioning column 14 is formed by protruding from the end face of the body 13, and the outer diameter of the body 13 is larger than that of the positioning column 14; the second needle body 5 is provided with a positioning hole 511 for accommodating the positioning column 14, the positioning hole 511 is formed by the concave arrangement of the end face of the second needle body 5, and the positioning column 14 is provided with a conical part which is convenient to insert into the positioning hole 511, so that the assembly efficiency of the first needle body 3 and the second needle body 5 is improved. The positioning post 14 is stopped and limited by the inner hole wall of the positioning hole 511, so as to ensure that the second pin 5 can stably support the first pin 3.
The main body 13 is conical, and the outer diameter of the main body 13 near the positioning column 14 is smaller than the outer diameter of the main body 13 far from the positioning column 14. After the molten plastic in the mold cavity is cooled and solidified into a product object, the first needle body 3 is separated from the product object conveniently through the structural arrangement of the body 13, and the demolding efficiency of the product object is improved.
The ferrule 4 is provided with a third gap 15 communicating the first gap and the second gap, and the third gap 15 penetrates through the side wall of the ferrule 4 and the end face of the free end of the ferrule 4. The molten plastic in the third gap 15 becomes a reinforcing rib after cooling and solidifying, the reinforcing rib is connected with the object part formed in the first gap and the object part formed in the second gap, the risk of fracture caused by low connecting strength between the object part formed in the first gap and the object part formed in the second gap is avoided, and the service life of the product object is prolonged.
The number of the third gaps 15 is multiple, so that the connection strength between the object part formed by the first gap and the object part formed by the second gap is further increased; the plurality of third gaps 15 are in an annular array around a central axis of the first through hole 6, the central axis of the first through hole 6 coincides with the central axis of the ferrule 4; when the molten plastic is injected into the die cavity, the extrusion force of the molten plastic on the circumferential direction of the first needle body 3 is ensured to be approximately and uniformly distributed, and the deflection and deflection caused by the uneven circumferential force of the first needle body 3 are avoided.
Two first clamping blocks 16 positioned on two sides of the first gap are arranged on the third template 7, two first clamping grooves 17 positioned on two sides of the first gap are arranged on the fourth template 8, the first clamping blocks 16 and the first clamping grooves 17 are positioned on one side, close to each other, of the third template 7 and the fourth template 8, and the two first clamping blocks 16 are respectively arranged in the two first clamping grooves 17. The first clamping block 16 is matched with the first clamping groove 17, so that the third template 7 and the fourth template 8 are rapidly and accurately assembled together, and the mold closing efficiency of the double-channel mold structure is improved.
Two second clamping blocks 18 positioned at two sides of the first needle body 3 are arranged on the first template 1, second clamping grooves 19 are formed in the third template 7 and the fourth template 8, and the two second clamping blocks 18 are respectively arranged in the second clamping grooves 19 of the third template 7 and the second clamping grooves 19 of the fourth template 8. Through the matching of the second clamping block 18 and the second clamping groove 19, the first template 1 is quickly and accurately assembled and matched with the third template 7 and the fourth template 8, the mold closing efficiency of the double-channel mold structure is improved in an auxiliary mode, and the molding efficiency of product articles is improved. In this embodiment, the second mold plate 2 directly presses and abuts against one side of the third mold plate 7 away from the first mold plate 1 and one side of the fourth mold plate 8 away from the first mold plate 1.
The above description is only for the preferred embodiment of the present invention, and the present specification should not be construed as limiting the present invention.
Claims (8)
1. A double-runner mold structure comprises a first mold plate and a second mold plate matched with the first mold plate; the method is characterized in that: the first template is provided with a first needle body, the second template is provided with an inserting core and a second needle body positioned in the inserting core, the inserting core is provided with a first through hole, the free end of the first needle body extends into the first through hole, and the free end of the second needle body extends into the first through hole and supports against the free end of the first needle body; the double-flow-channel mold structure further comprises a third template and a fourth template, the third template and the fourth template are arranged between the first template and the second template, one sides of the third template and the fourth template, which are close to each other, are surrounded to form a second through hole, and the insert core is positioned in the second through hole; a first gap is formed between the first needle body and the inner hole wall of the first perforation, a second gap is formed between the insertion core and the inner hole wall of the second perforation, and the first gap and the second gap are communicated to form a mold cavity for molding a product object; the mold plate is provided with a first runner and a second runner which are used for communicating the mold cavity, and molten plastic is injected into the mold cavity through the first runner and the second runner.
2. The dual-flow-channel mold structure of claim 1, wherein: the first runner and the second runner are arranged on the first template, the first runner and the second runner are communicated with the second gap, and the first runner and the second runner are symmetrically arranged relative to the central axis of the first needle body.
3. The dual-flow-channel mold structure of claim 1, wherein: the first needle body comprises a body and a positioning column connected with the body, and the outer diameter of the body is larger than that of the positioning column; the second needle body is provided with a positioning hole for accommodating a positioning column, and the positioning column is provided with a conical part which is convenient to insert into the positioning hole.
4. The dual-flow-channel mold structure of claim 3, wherein: the body is conical, and the external diameter that the body is close to reference column one end is less than the external diameter that the body kept away from reference column one end.
5. The dual-flow-channel mold structure of claim 1, wherein: the insertion core is provided with a third gap communicated with the first gap and the second gap, and the third gap penetrates through the side wall of the insertion core and the end face of the free end of the insertion core.
6. The dual-flow-channel mold structure of claim 5, wherein: the number of the third gaps is multiple, the third gaps are in an annular array around the central axis of the first through hole, and the central axis of the first through hole is coincident with the central axis of the ferrule.
7. The dual-flow-channel mold structure of claim 1, wherein: the third template is provided with two first clamping blocks positioned on two sides of the first gap, the fourth template is provided with two first clamping grooves positioned on two sides of the first gap, and the two first clamping blocks are respectively arranged in the two first clamping grooves.
8. The dual-flow-channel mold structure of claim 1, wherein: the first template is provided with two second clamping blocks positioned on two sides of the first needle body, the third template and the fourth template are both provided with second clamping grooves, and the two second clamping blocks are respectively arranged in the second clamping groove of the third template and the second clamping groove of the fourth template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922266243.0U CN211492622U (en) | 2019-12-17 | 2019-12-17 | Double-runner mold structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922266243.0U CN211492622U (en) | 2019-12-17 | 2019-12-17 | Double-runner mold structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211492622U true CN211492622U (en) | 2020-09-15 |
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ID=72416643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922266243.0U Active CN211492622U (en) | 2019-12-17 | 2019-12-17 | Double-runner mold structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211492622U (en) |
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2019
- 2019-12-17 CN CN201922266243.0U patent/CN211492622U/en active Active
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