CN202283774U - Special threaded rod check valve for polypropylene of injection molding machine - Google Patents
Special threaded rod check valve for polypropylene of injection molding machine Download PDFInfo
- Publication number
- CN202283774U CN202283774U CN2011203586007U CN201120358600U CN202283774U CN 202283774 U CN202283774 U CN 202283774U CN 2011203586007 U CN2011203586007 U CN 2011203586007U CN 201120358600 U CN201120358600 U CN 201120358600U CN 202283774 U CN202283774 U CN 202283774U
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- China
- Prior art keywords
- check valve
- check
- return
- valve body
- threaded rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Injection Moulding Of Plastics Or The Like (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses a special threaded rod check valve for polypropylene of an injection molding machine. The special threaded rod check valve comprises a check valve body, a gluing head, a check gasket, a check ring and a slotted hole, wherein the check valve body is in transmission connection with a threaded rod, and the gluing head is fixedly arranged at the front end of the check valve body; the check gasket is arranged at the front part of the check valve body, and the check ring is arranged between the check gasket and the gluing head; and the slotted hole is arranged between the check ring and the check valve body. Two contact surfaces are arranged between the check gasket and the check ring, and the contact surfaces are flat surfaces or cylindrical surfaces. As the technical scheme is adopted, compared with the prior art, the special threaded rod check valve has the advantages that a check valve assembly is optimized, a spring design is added, a check valve needle can quickly close the check valve after fusing glue is finished, injection stability is ensured, and back flow of glue stocks is prevented.
Description
Technical field
The utility model relates to check (non-return) valve, specifically, relates to a kind of injection machine PP material bolt special check (non-return) valve.
Background technology
During injection machine was produced, the rubber melting cylinder check (non-return) valve generally adopted the sleeve type check (non-return) valve.Rubber melting cylinder is the screw rod rotation when melten gel, and sizing material accumulates in melten gel head front end, drives sliding sleeve forward, stops at the end stop of screw rod, and the sizing material of fusing flows through the glue head by the fluting of crossing the glue head.During the screw rod injecting glue, sliding sleeve forms a sealing ring backward, and valve body is closed, and sizing material can not produce backflow.This valve is in that to be used for the higher material timeliness of viscosity fruit fine, and the PP material is a kind of high crystalline plastics, and its viscosity is minimum; Good fluidity if adopt conventional check (non-return) valve again, can cause the sizing material injection unstable; The product size deviation is excessive, even the discontented glue phenomenon of product notes can occur.
Summary of the invention
The technical problem that the utility model will solve is to overcome above-mentioned defective, and the steady and leak free injection machine PP material of a kind of assurance injection bolt special check (non-return) valve is provided.
For addressing the above problem, the technical scheme that the utility model adopted is:
A kind of injection machine PP material bolt special check (non-return) valve is characterized in that: comprise the non-return valve body that is connected with screw drive, be fixed on non-return valve body front end cross the glue head, be arranged on the anterior non-return packing ring of non-return valve body, be arranged on the non-return circle between non-return packing ring and the mistake glue head and be arranged on non-return circle and non-return valve body between slotted eye; Two contact-making surfaces are arranged between said non-return packing ring and the non-return circle, and contact-making surface is the plane or the face of cylinder.
Owing to adopted technique scheme, compared with prior art, the utility model is optimized the check (non-return) valve assembly and establishes, and has increased the spring design, makes non-return needle after melten gel finishes, can close check (non-return) valve rapidly, has guaranteed the steady of injection, prevents the backflow of sizing material.
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described further.
Description of drawings
Fig. 1 is the cross section view of a kind of embodiment of the utility model;
The cross section view of check (non-return) valve when Fig. 2 is the utility model embodiment injecting glue.
The specific embodiment
Embodiment:
A kind of injection machine PP material bolt special check (non-return) valve; As shown in Figure 1, comprise the non-return valve body 5 that is connected with screw drive, the mistake glue head 1 that is fixed on non-return valve body 5 front ends, the non-return packing ring 4 that is arranged on non-return valve body 5 front portions, be arranged on the non-return circle 3 between non-return packing ring 4 and the mistake glue head 1 and be arranged on the slotted eye 2 between non-return circle 3 and the non-return valve body 5.Two contact-making surfaces are arranged between said non-return packing ring 4 and the non-return circle 3, and contact-making surface is the plane or the face of cylinder.
During the screw rod melten gel, through the rotation of screw rod, sizing material gets into from the gap of non-return circle 3 with non-return valve body 5, promotes non-return circle 3 reaches, and check (non-return) valve is opened, and sizing material passed through the slotted eye 2 on the glue head 1 smoothly.
As shown in Figure 2, screw rod moves forward injecting glue when beginning, and non-return circle 3 moves forward and crosses glue head 1 and contact; Cut off the non-return circle in sizing material backflow back and continue to move,, can not produce the backflow of sizing material until contacting thorough valve body with non-return packing ring 4; Reduce the dimensional discrepancy of product, improve yield rate.
Claims (1)
1. injection machine PP material bolt special check (non-return) valve is characterized in that: comprise the non-return valve body (5) that is connected with screw drive, be fixed on non-return valve body (5) front end cross glue head (1), be arranged on the anterior non-return packing ring (4) of non-return valve body (5), be arranged on the non-return circle (3) between non-return packing ring (4) and the mistake glue head (1) and be arranged on non-return circle (3) and non-return valve body (5) between slotted eye (2); Between said non-return packing ring (4) and the non-return circle (3) two contact-making surfaces are arranged, contact-making surface is the plane or the face of cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203586007U CN202283774U (en) | 2011-09-23 | 2011-09-23 | Special threaded rod check valve for polypropylene of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203586007U CN202283774U (en) | 2011-09-23 | 2011-09-23 | Special threaded rod check valve for polypropylene of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202283774U true CN202283774U (en) | 2012-06-27 |
Family
ID=46295308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203586007U Expired - Fee Related CN202283774U (en) | 2011-09-23 | 2011-09-23 | Special threaded rod check valve for polypropylene of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202283774U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921414A (en) * | 2014-03-22 | 2014-07-16 | 肖加云 | Combined type screw head |
| CN105398008A (en) * | 2015-06-02 | 2016-03-16 | 苏州乔布注塑工业有限公司 | Injection molding machine check valve |
| CN107538696A (en) * | 2017-10-13 | 2018-01-05 | 东莞市联洲知识产权运营管理有限公司 | One kind injection extruder head sizing material anti-reversing clutch |
-
2011
- 2011-09-23 CN CN2011203586007U patent/CN202283774U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921414A (en) * | 2014-03-22 | 2014-07-16 | 肖加云 | Combined type screw head |
| CN105398008A (en) * | 2015-06-02 | 2016-03-16 | 苏州乔布注塑工业有限公司 | Injection molding machine check valve |
| CN107538696A (en) * | 2017-10-13 | 2018-01-05 | 东莞市联洲知识产权运营管理有限公司 | One kind injection extruder head sizing material anti-reversing clutch |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20200923 |