CN202985995U - Shearing mechanism of ring gate - Google Patents
Shearing mechanism of ring gate Download PDFInfo
- Publication number
- CN202985995U CN202985995U CN 201220561258 CN201220561258U CN202985995U CN 202985995 U CN202985995 U CN 202985995U CN 201220561258 CN201220561258 CN 201220561258 CN 201220561258 U CN201220561258 U CN 201220561258U CN 202985995 U CN202985995 U CN 202985995U
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- CN
- China
- Prior art keywords
- tooth bar
- sprue bush
- cutting mechanism
- transmission device
- drive unit
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a shearing mechanism of a ring gate. The shearing mechanism comprises a gate sleeve (1). The shearing mechanism of the ring gate further comprises a driving device and a transmission device which are arranged on a fixed mould plate (2) of an injection mould. The transmission device is respectively connected with the driving device and the gate sleeve (1). A plurality axial protrusions or axial grooves are arranged on the inner wall of the gate sleeve (1). The shearing mechanism is high in shearing efficiency and good in shearing quality.
Description
Technical field
The present invention relates to a kind of device for shearing the annular plastics cast gate, is specifically a kind of cutting mechanism of circular gate.
Background technology
Working of plastics injects injection mold by injection machine with plastic raw materials and makes.Usually, after this working of plastics is made, can inevitably form one or more runners on working of plastics.This runner affects the normal use of working of plastics due to meeting, therefore usually can be cut.At present, the shearing of plastic passages generally outside mould by manually completing with scissors, there is following defective in it: 1, because the artificial speed of shearing is slow, and after taking out grinding tool again row prune, so its shear efficiency is low.2, due to artificial shear runner after, the cast gate place has certain residual unavoidably, so its shearing quality is poor.Therefore, for these reasons, demand needing the cutting mechanism of the high and circular gate that shearing quality is good of a kind of shear efficiency urgently, to address the above problem.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the defective of above prior art, and the cutting mechanism of the high and circular gate that shearing quality is good of a kind of shear efficiency is provided.
Technical scheme of the present invention is, a kind of cutting mechanism of circular gate is provided, and comprises sprue bush, and the cutting mechanism of described circular gate also comprises drive unit, the transmission device that is arranged on injection molding mould fixed die and pulls; Described transmission device is connected with drive unit, sprue bush respectively; The inwall of described sprue bush is provided with a plurality of axial projection or axial notch.
Described drive unit is oil cylinder.
The gear that described transmission device comprises a tooth bar, be located on sprue bush and be used in conjunction with tooth bar, be located at the guide ring of a plurality of restriction tooth bar directions of motion that cover half pulls; Described a plurality of tooth bar is slidably fitted in a plurality of guide rings.
Described transmission device is connected with drive unit, sprue bush respectively and refers to: an end of described tooth bar is connected with the piston rod of oil cylinder, the side of described tooth bar and gear engagement.
After adopting above structure, the present invention compared with prior art has the following advantages:
Cutting mechanism of the present invention is after the injection machine injection moulding is completed and before die sinking, cylinder action, promote the tooth bar moving linearly, and then drive meshed gears, sprue bush, runner and rotate together, because the inwall of sprue bush is provided with a plurality of axial projection or axial notch, therefore avoided circumferentially skidding between runner and sprue bush, moulding is fixed in dynamic model motionless, therefore after rotating to certain angle, namely runner can be twisted off, thereby realize the effect that cast gate is cut off.1, shear because cutting mechanism of the present invention adopts machine, and be namely can complete shearing after injection moulding is completed and before die sinking, reduced and carried out the artificial time of shearing, so its shear efficiency is high.2, adopt machine to twist off due to cutting mechanism of the present invention and runner and cast gate place usually comparatively fragility, easily twist off, therefore, the more consistent and noresidue of the effect of its shearing, its shearing quality is better.
Description of drawings
Fig. 1 is the structural representation of the cutting mechanism of circular gate of the present invention.
Fig. 2 be circular gate of the present invention cutting mechanism partly cut open figure.
Fig. 3 is the structural representation of runner.
Shown in figure 1, sprue bush, 2, cover half pulls, 3, oil cylinder, 4, tooth bar, 5, gear, 6, guide ring, 7, runner, 8, moulding, 9, the straight burr muscle.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2, shown in Figure 3, the cutting mechanism of a kind of circular gate of the present invention comprises sprue bush 1, and the cutting mechanism of described circular gate comprises that also being arranged on injection molding mould fixed die pulls drive unit, transmission device on 2; Described transmission device is connected with drive unit, sprue bush 1 respectively; The inwall of described sprue bush 1 is provided with a plurality of axial projection or axial notch, and in the present embodiment, the inwall of sprue bush 1 is provided with a plurality of axial notches, will form a plurality of axial projection on the outer surface of the runner that forms like this, and namely the straight burr muscle 9.
Described drive unit is oil cylinder 3, during use, oil cylinder 3 is connected and can uses with oil sources, controller.
The gear 5 that described transmission device comprises a tooth bar 4, be located on sprue bush 1 and be used in conjunction with tooth bar 4, be located at the guide ring 6 that cover half is pulled a plurality of restriction tooth bar 4 directions of motion on 2; Described a plurality of guide ring 6 is socketed in the outside of tooth bar 4; Described a plurality of tooth bar 4 is slidably fitted in a plurality of guide rings 6, is provided with in the present embodiment three guide rings 6.
Described transmission device is connected with drive unit, sprue bush respectively and refers to: an end of described tooth bar 4 is fixedly connected with the piston rod of oil cylinder 3, the side of described tooth bar 4 and gear 5 engagements.
Cutting mechanism of the present invention is after the injection machine injection moulding is completed and before die sinking, oil cylinder 3 actions, promote tooth bar 4 moving linearlies, and then drive meshed gears 5, sprue bush 1, runner 7 and rotate together, because the inwall of sprue bush 1 is provided with a plurality of axial projection or axial notch, therefore avoided circumferentially skidding between runner 7 and sprue bush 1, moulding 8 is fixed in dynamic model motionless, therefore after rotating to certain angle, namely runner 7 can be twisted off, thereby realize the effect that cast gate is cut off.
Below only be described with regard to most preferred embodiment of the present invention, but can not be interpreted as it is limitations on claims.The present invention is not limited only to above embodiment, and its concrete structure allows to change.In every case the various variations of doing in the protection domain of independent claims of the present invention are all in protection scope of the present invention.
Claims (4)
1. the cutting mechanism of a circular gate, comprise sprue bush (1), it is characterized in that: the cutting mechanism of described circular gate comprises that also being arranged on injection molding mould fixed die pulls drive unit, transmission device on (2); Described transmission device is connected with drive unit, sprue bush (1) respectively; The inwall of described sprue bush (1) is provided with a plurality of axial projection or axial notch.
2. the cutting mechanism of circular gate according to claim 1, it is characterized in that: described drive unit is oil cylinder (3).
3. the cutting mechanism of circular gate according to claim 2 is characterized in that: described transmission device comprises a tooth bar (4), be located at the upper and gear (5) that is used in conjunction with tooth bar (4) of sprue bush (1), be located at cover half pulls a plurality of guide rings (6) that tooth bar (4) is play the guiding role on (2); Described a plurality of tooth bar (4) is slidably fitted in a plurality of guide rings (6).
4. the cutting mechanism of circular gate according to claim 3, it is characterized in that: described transmission device is connected with drive unit, sprue bush respectively and refers to: an end of described tooth bar (4) is connected with the piston rod of oil cylinder (3), the side of described tooth bar (4) and gear (5) engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561258 CN202985995U (en) | 2012-10-30 | 2012-10-30 | Shearing mechanism of ring gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561258 CN202985995U (en) | 2012-10-30 | 2012-10-30 | Shearing mechanism of ring gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202985995U true CN202985995U (en) | 2013-06-12 |
Family
ID=48557212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561258 Expired - Fee Related CN202985995U (en) | 2012-10-30 | 2012-10-30 | Shearing mechanism of ring gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202985995U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941657A (en) * | 2012-10-30 | 2013-02-27 | 宁波双林模具有限公司 | Shearing mechanism of annular sprue gate |
| CN104772872A (en) * | 2015-03-31 | 2015-07-15 | 宁波兴利汽车模具有限公司 | Intra-mould automatic material cutting head device |
-
2012
- 2012-10-30 CN CN 201220561258 patent/CN202985995U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941657A (en) * | 2012-10-30 | 2013-02-27 | 宁波双林模具有限公司 | Shearing mechanism of annular sprue gate |
| CN102941657B (en) * | 2012-10-30 | 2015-10-28 | 宁波双林模具有限公司 | The cutting mechanism of circular gate |
| CN104772872A (en) * | 2015-03-31 | 2015-07-15 | 宁波兴利汽车模具有限公司 | Intra-mould automatic material cutting head device |
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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: 20130612 Termination date: 20181030 |