CN202592687U - Ejection rod used in external gas-assisted injection molding - Google Patents
Ejection rod used in external gas-assisted injection molding Download PDFInfo
- Publication number
- CN202592687U CN202592687U CN 201220184868 CN201220184868U CN202592687U CN 202592687 U CN202592687 U CN 202592687U CN 201220184868 CN201220184868 CN 201220184868 CN 201220184868 U CN201220184868 U CN 201220184868U CN 202592687 U CN202592687 U CN 202592687U
- Authority
- CN
- China
- Prior art keywords
- push rod
- sealing ring
- ejects
- injection molding
- assisted injection
- 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 - Lifetime
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims description 9
- 230000032683 aging Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses an ejection rod used in external gas-assisted injection molding. The ejection rod used in the external gas-assisted injection molding is characterized by comprising an ejection end of the ejection rod, a sealing ring, a fixed end of the ejection rod and a bolt. The ejection end of the ejection rod and the fixed end are connected with each other in fixed mode by the bolt. The sealing ring is arranged on the side where the ejection end of the ejection rod contacts with a mold core. A groove is arranged on the side where the ejection end of the ejection rod contacts with the sealing ring and used to prevent the sealing ring from moving when the ejection rod moves. The sealing ring is connected with the ejection end of the ejection rod in fixed mode by the groove. The ejection rod used in the external gas-assisted injection molding has the advantages of being good in a sealing performance and smooth in ejection rod movement. And the sealing ring is convenient to change and not prone to ageing.
Description
Technical field
The utility model relates to a kind of closed type push rod that is used for the extraneous gas assisted injection molding.
Background technology
In injection moulding, the application of air-auxiliary injection forming (hereinafter to be referred as " gas auxilliary ") more and more widely, wherein extraneous gas assisted injection molding (hereinafter to be referred as " outer auxilliary ") is a kind of emerging technology.In the auxilliary outside process, because gas is in the plastic surface action, the sealing of die cavity is vital for the influence of gas action effect, and the push rod place then is that gas leaks one of the most serious place.
Leak gas for the push rod place; Common solution is on the inner push rod of push rod template, to overlap sealing ring; Though the method can guarantee the sealing of die cavity to a certain extent, this mode has but influenced the motion of push rod greatly, has also quickened the aging and wearing and tearing of sealing ring simultaneously.Because sealing ring is inner in template, after its ageing failure, replacing has become a great problem again.
Summary of the invention
The push rod place is poorly sealed in the existing outer assist mold, the push rod motion is not smooth and the aging problem of changing difficulty of sealing ring in order to overcome; The utility model provides a kind of seal request that can either guarantee die cavity in the outer auxilliary process; Do not influence the proper motion in practical process again, change the closed type push rod that is used for the extraneous gas assisted injection molding easily simultaneously.
The technical scheme that the utility model adopts is:
A kind of closed type push rod that is used for the extraneous gas assisted injection molding; It is characterized in that: comprise that push rod ejects end, sealing ring, push rod stiff end and bolt; Said push rod ejects end and is connected through said bolt with stiff end and fixes, and said push rod ejects holds a side that contacts with core to be provided with said sealing ring.
Further, said push rod ejects holds a side that contacts with said sealing ring to be provided with the groove that prevents that sealing ring is moved in the push rod motion process, and said sealing ring ejects end through said groove and said push rod and is fixedly connected.
Further, be with a pad on the said bolt.
Further, said push rod ejects the end face size of the end face size of end greater than said stiff end, makes the said end that ejects with plastic bigger contact area arranged, and destroys plastic when preventing to eject.
Further, said push rod ejects and holds the side that contacts with core to be made as the difficult inclined-plane that interlocks with the core generation.
Further, said sealing ring is provided with the annular projection auxiliary seal.
The method for using of the utility model:
When the mould matched moulds, said push rod is strained in push pedal makes the sealing ring that ejects end compress core, reaches the effect of sealing; When the mould die sinking, the said end that ejects ejects plastic and gets final product.
Because mostly outer auxilliary plastic is thin plate class plastic,, the end face that ejects end that contacts with plastic want ambassador itself and plastic bigger contact area to be arranged, destruction plastic when preventing to eject so being made as than the end face of stiff end; Simultaneously in order to prevent because the staggered push rod that influences takes place with core in the distortion of push rod easily moves, contact a side with core and be designed to the inclined-plane so push rod ejects to hold.
For convenient for assembly, push rod is divided into push rod ejects end and push rod stiff end two parts, the middle bolt that adopts connects; Bolt hinders the push rod motion when preventing die sinking, needs during use stay counterbore in corresponding template.
The beneficial effect of the utility model is embodied in: push rod place good airproof performance, push rod move smooth and easy and sealing ring is difficult for aging and it is convenient to change.
Description of drawings
Fig. 1 is the utility model push rod installation diagram.
Fig. 2 is the push rod sketch map under the utility model matched moulds state.
Fig. 3 is the push rod sketch map under the utility model die opening state.
The specific embodiment
With reference to Fig. 1; A kind of closed type push rod that is used for the extraneous gas assisted injection molding; Characteristics are to comprise that push rod ejects end 1, sealing ring 2, push rod stiff end 4 and bolt 3; Said push rod ejects end 1 and is connected through said bolt 3 with stiff end 4 and fixes, and said push rod ejects holds 1 side that contacts with core 7 to be provided with said sealing ring 2.
Further, said push rod ejects end 1 side that contacts with said sealing ring 2 and is provided with the groove that prevents that sealing ring 2 is moved in the push rod motion process, and said sealing ring 2 ejects through said groove and said push rod holds 1 to be fixedly connected.
Further, be with a pad on the said bolt 3.
Further, said push rod ejects the end face size of the end face size of end 1 greater than said stiff end 4, makes the said end 1 that ejects with plastic bigger contact area arranged, and destroys plastic when preventing to eject.
Further, said push rod ejects end 1 side that contact with core and is made as and is difficult for the inclined-plane that interlocks with core 7 generations.
Further, said sealing ring 2 is provided with the annular projection auxiliary seal.
With reference to Fig. 2 and Fig. 3, the method for using of the utility model:
When mould 6 matched moulds, the said push rod of push pedal 5 tensions makes the sealing ring 2 that ejects end 1 compress core 7, reaches the effect of sealing; When mould 6 die sinkings, the said end 1 that ejects ejects plastic and gets final product.
Because mostly outer auxilliary plastic is thin plate class plastic, so want ambassador itself and plastic that the end face that ejects end that contacts with plastic is made as than stiff end end face have bigger contact area, destruction plastic when preventing to eject; Simultaneously in order to prevent because the staggered push rod that influences takes place with core in the distortion of push rod easily moves, contact a side with core and be designed to the inclined-plane so push rod ejects to hold.
For convenient for assembly, push rod is divided into push rod ejects end and push rod stiff end two parts, the middle bolt that adopts connects; Bolt hinders the push rod motion when preventing die sinking, needs during use stay counterbore 8 in corresponding template.
The described content of this specification embodiment only is enumerating the way of realization of inventive concept; Should not being regarded as of the protection domain of the utility model only limits to the concrete form that embodiment states, the protection domain of the utility model also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (6)
1. closed type push rod that is used for the extraneous gas assisted injection molding; It is characterized in that: comprise that push rod ejects end, sealing ring, push rod stiff end and bolt; Said push rod ejects end and is connected through said bolt with stiff end and fixes, and said push rod ejects holds a side that contacts with core to be provided with said sealing ring.
2. a kind of closed type push rod that is used for the extraneous gas assisted injection molding as claimed in claim 1; It is characterized in that: said push rod ejects holds a side that contacts with said sealing ring to be provided with the groove that prevents that sealing ring is moved in the push rod motion process, and said sealing ring ejects end through said groove and said push rod and is fixedly connected.
3. a kind of closed type push rod that is used for the extraneous gas assisted injection molding as claimed in claim 2 is characterized in that: be with a pad on the said bolt.
4. a kind of closed type push rod that is used for the extraneous gas assisted injection molding as claimed in claim 3; It is characterized in that: said push rod ejects the end face size of the end face size of end greater than said stiff end; Make the said end that ejects bigger contact area arranged, destroy plastic when preventing to eject with plastic.
5. a kind of closed type push rod that is used for the extraneous gas assisted injection molding as claimed in claim 4 is characterized in that: said push rod ejects holds the side that contacts with core to be made as the difficult inclined-plane that interlocks with the core generation.
6. like the described a kind of closed type push rod that is used for the extraneous gas assisted injection molding of one of claim 1～5, it is characterized in that: said sealing ring is provided with the annular projection auxiliary seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220184868 CN202592687U (en) | 2012-04-27 | 2012-04-27 | Ejection rod used in external gas-assisted injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220184868 CN202592687U (en) | 2012-04-27 | 2012-04-27 | Ejection rod used in external gas-assisted injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202592687U true CN202592687U (en) | 2012-12-12 |
Family
ID=47310269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220184868 Expired - Lifetime CN202592687U (en) | 2012-04-27 | 2012-04-27 | Ejection rod used in external gas-assisted injection molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202592687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672923A (en) * | 2012-04-27 | 2012-09-19 | 浙江工业大学 | Closed type ejection rod used for external gas assisted injection molding |
-
2012
- 2012-04-27 CN CN 201220184868 patent/CN202592687U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672923A (en) * | 2012-04-27 | 2012-09-19 | 浙江工业大学 | Closed type ejection rod used for external gas assisted injection molding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20150805 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20150805 |
|
| RGAV | Abandon patent right to avoid regrant |