CN104227996A - Automatic in-mold sprue cutting structure of injection mold - Google Patents
Automatic in-mold sprue cutting structure of injection mold Download PDFInfo
- Publication number
- CN104227996A CN104227996A CN201410476434.9A CN201410476434A CN104227996A CN 104227996 A CN104227996 A CN 104227996A CN 201410476434 A CN201410476434 A CN 201410476434A CN 104227996 A CN104227996 A CN 104227996A
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- Prior art keywords
- push rod
- mold
- cutter
- front mould
- gate cutting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/38—Cutting-off equipment for sprues or ingates
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an automatic in-mold sprue cutting structure of an injection mold. A lot of in-mold sprue shearing structures exist at present, but most of the in-mold sprue shearing structures are unreliable in structure, easy to fail, complex in structure, higher in cost or only applicable to small sprues, and even structures and appearances of products are required to be changed. The structure is characterized in that an ejecting cutter capable of cutting off a sprue is arranged in a runner of a back mold cavity, the bottom of the ejecting cutter is fixedly connected with the upper end of a push rod connected onto a back mold, the ejecting cutter is pushed out by the push rod to cut off the sprue during mold opening, an ejecting cutter panel located in a mold seat is arranged at the lower end of the push rod, and the ejecting cutter panel is placed on an ejecting cutter bottom plate located in the mold seat. With the adoption of the structure, the sprue and a product can be automatically and effectively separated, and the structure is simple, convenient to operate, high in working efficiency, low in labor intensity and low in cost.
Description
Technical field
The present invention relates to mould structure, specifically automatic gate cutting structure in a kind of injection mold mould.
Background technology
Current PVC pipe injection molding, generally cannot use hot flow path, is all style big water gap cold runner, enter glue point comparatively large, and common cast gate is all go by hand to shear, if it is attractive in appearance to require product surface to shear, then needs to require higher to the industrial grade of operator; And product after injection moulding is boiling hotter, PVC material is again partially hard raw material, and when producing in enormous quantities, labour intensity is too high, inefficiency.
Cut pouring gate structure in existing mould more, but it is unreliable mostly to there is structure, easily loses efficacy, complex structure cost is comparatively large, or is only applicable to little cast gate, even needs change product structure and outward appearance.
Summary of the invention
Technical problem to be solved by this invention is the defect overcoming the existence of above-mentioned prior art, when a kind of production be provided in mould directly by the automatic gate cutting structure of cast gate and separation of products, to reduce labour intensity, increase work efficiency, reduce the industrial grade requirement of production cost and operator.
For this reason, the present invention adopts following technical scheme: automatic gate cutting structure in injection mold mould, comprise front mould and with front mould with the use of rear mold, rear mold is fixedly connected on die holder, it is characterized in that, the runner being positioned at rear model cavity is provided with one can by the top cutter of gate cutting, the upper end that the bottom and of this top cutter is connected to the push rod in rear mold is fixedly connected with, cutter will be pushed up by push rod during die sinking release and then cut off cast gate, the bottom of push rod is provided with the top knife face plate that is positioned at die holder, and this top knife face plate rests one and is positioned on the top cutter base plate of die holder;
The both sides of described push rod are respectively provided with one and are connected in rear mold and release link moving up and down, the lower end of push rod and release link is all conflicted on the cutter base plate of top through top knife face plate, the below of this top cutter base plate is provided with the Ejector Retainer Plate and being positioned at die holder and rests thimble panel on Ejector Retainer Plate, Ejector Retainer Plate and thimble panel can move up and down in die holder, are provided with multiple locating dowel between top knife face plate and Ejector Retainer Plate;
In each locating dowel, cover has one pushing up the spring between cutter base plate and thimble panel, compressed at matched moulds state lower spring, the upper end of push rod is placed in the runner of rear model cavity, the upper end of release link is placed in rear mold, exists when push rod is released completely and ensure the stroke of gate cutting between top knife face plate and rear mold; Reset at die opening state lower spring, the reset force of spring makes the upper end of push rod be placed in outside the runner of rear model cavity, and the upper end of release link is placed in outside rear mold;
The front mould be positioned at directly over release link is provided with the front mould push rod conflicted in bottom and release link upper end, and during matched moulds, front mould push rod pushes away release link and is located in rear mold, thus makes spring be in compressive state.
As preferably, the top of described front mould push rod is provided with flexible rod, a circle first step is provided with in front mould, one circle the first boss is formed at the top of front mould push rod, during matched moulds, the bottom of front mould push rod flushes with the bottom of front mould and the bar that is reset is kept out, and there is gap between first step and the first boss, flexible rod is compressed; During die sinking, utilize the reset of flexible rod that the first boss is conflicted on first step, the bottom of front mould push rod is placed in outside front mould.By flexible rod as ejecting force, act on front mould push rod release link is resetted when matched moulds, the upper end of release link is placed in rear mold, meanwhile, release link drives top cutter to be placed in rear model cavity runner, ensure that top cutter does not bump against with front mould, extend the service life of top cutter during such matched moulds.
As preferably, the thimble panel be positioned at below locating dowel has the through hole that can be used for locating dowel turnover, the upper end of locating dowel is conflicted on the bottom surface of top knife face plate through after the cutter base plate of top, described through hole can regulate top cutter eject distance (namely mould eject apart from time inadequate, the lower end of locating dowel can be placed in through hole).
As preferably, the top of described locating dowel forms a circle and prevents from pushing up the second boss that cutter base plate skids off from it, formed in the cutter base plate of top a circle and the second boss with the use of second step.
As preferably, the bottom of described release link and push rod all forms a circle and prevents its 3rd boss skidded off from top knife face plate, formed in the knife face plate of top with the 3rd boss with the use of the 3rd step.
As preferably, be positioned at the runner that front model cavity enters glue point place and stud with a cooling block, before ensureing, the glue point that enters of model cavity cools fast.
As preferably, the bottom of described top cutter adopts with the top of push rod and is threaded, easy disassembly.
As preferably, the two ends on cutter top, described top form cutting edge of a knife or a sword mouth, and the centre on cutter top, top has locating notch, and locating notch positions cast gate, are more conducive to cut off cast gate.
As preferably, described top cutter spacing is entered in the runner at glue point place in rear model cavity, thus product can be separated with cast gate connecting place better, ensures that product surface is smooth.
As preferably, a upper end running through the thimble of rear mold is positioned at the runner of rear model cavity, conflicts on the surface of Ejector Retainer Plate through after top knife face plate, top cutter base plate and thimble panel successively in lower end.After cut-out cast gate, thimble is utilized to be ejected by product.
The beneficial effect that the present invention has: during die sinking, cast gate can be separated with product by top cutter automatically effectively, and structure is simple, and easy and simple to handle, easy to adjust, shear smooth, operating efficiency is high, and labour intensity is low, and cost is low, applied widely, long service life; Top cutter does not bump against with front mould, extends the service life of top cutter.
Accompanying drawing explanation
Fig. 1-2 is structural representation of the present invention.
Fig. 3 is the structural representation of top of the present invention cutter.
Fig. 4 is the structural representation of model cavity before the present invention.
Fig. 5 is the structural representation of model cavity after the present invention.
Fig. 6 is the structural representation of top of the present invention knife face plate.
Fig. 7 is the structural representation of top of the present invention cutter base plate.
Fig. 8 is the structural representation of thimble panel of the present invention.
Fig. 9 is the sectional view of model cavity before the present invention.
Figure 10 is the structural representation of front mould push rod of the present invention.
Figure 11 is the structural representation of locating dowel of the present invention.
Figure 12 is the structural representation of push rod of the present invention.
Figure 13 is the structural representation of release link of the present invention.
In figure, 1-front mould, 2-rear mold, 3-die holder, 4-pushes up cutter, 5-push rod, 6-pushes up knife face plate, and 7-pushes up cutter base plate, 8-release link, 9-Ejector Retainer Plate, 10-thimble panel, 11-locating dowel, 12-spring, 13-stroke, 14-front mould push rod, 15-flexible rod, 16-first step, 17-first boss, 18-second boss, 19-second step, 20-the 3rd boss, 21-the 3rd step, 22-cooling block, 23-cutting edge of a knife or a sword mouth, 24-locating notch, 25-thimble, 26-through hole.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the invention will be further described.
Automatic gate cutting structure in injection mold mould as shown in the figure, front mould 1 and rear mold 2 with the use of, rear mold 2 is fixedly connected on die holder 3, being positioned at that runner that rear model cavity enters glue point place is provided with can by the top cutter 4 of gate cutting, the bottom of this top cutter 4 adopts screw thread to be fixedly connected with the upper end of the push rod 5 be connected in rear mold, by push rod 5 top cutter 4 released during die sinking and then cut off cast gate, the bottom of push rod 5 is provided with the top knife face plate 6 being positioned at die holder, and this top knife face plate 6 rests and is positioned on the top cutter base plate 7 of die holder.
The both sides of described push rod 5 are respectively provided with one and are connected in rear mold and release link moving up and down 8, the lower end of push rod 5 and release link 8 is all conflicted on top cutter base plate 7 through top knife face plate 6, the below of this top cutter base plate 7 is provided with the Ejector Retainer Plate 9 being positioned at die holder and the thimble panel 10 rested on Ejector Retainer Plate 9, Ejector Retainer Plate 9 and thimble panel 10 can move up and down in die holder, are provided with multiple locating dowel 11 between top knife face plate 6 and Ejector Retainer Plate 9.
In each locating dowel 11, cover has the spring 12 between top cutter base plate 7 and thimble panel 10, compressed at matched moulds state lower spring 12, the upper end of push rod 5 is placed in the runner of rear model cavity, the upper end of release link 8 is placed in rear mold 2, exists when push rod is released completely and ensure the stroke 13 of gate cutting between top knife face plate 6 and rear mold 2.Reset at die opening state lower spring, the reset force of spring 12 makes the upper end of push rod 5 be placed in outside the runner of rear model cavity, and the upper end of release link 8 is placed in outside rear mold.
The front mould be positioned at directly over release link is provided with the front mould push rod 14 conflicted in bottom and release link upper end, and during matched moulds, front mould push rod 14 pushes away release link 8 and is located in rear mold, thus makes spring be in compressive state.
The top of front mould push rod 14 is provided with the flexible rod 15 be made up of Cowhells material, a circle first step 16 is provided with in front mould 1, one circle the first boss 17 is formed at the top of front mould push rod 14, during matched moulds, the bottom of front mould push rod 14 flushes with the bottom of front mould 1 and the bar that is reset is kept out, there is gap between first step 16 and the first boss 17, flexible rod 15 is compressed.During die sinking, utilize the reset of flexible rod 15 to make the first boss 17 conflict on first step 16, the bottom of front mould push rod 14 is placed in outside front mould.
The thimble panel 10 be positioned at below locating dowel 11 has the through hole 26 that can be used for locating dowel turnover, and the upper end of locating dowel 11 is through conflicting after top cutter base plate 7 on the bottom surface of top knife face plate 6.The top of locating dowel 11 forms a circle and prevents from pushing up the second boss 18 that cutter base plate skids off from it, formed in top cutter base plate 7 circle and the second boss with the use of second step 19.The bottom of described release link 8 and push rod 5 all forms a circle and prevents its 3rd boss 20 skidded off from top knife face plate, formed in top knife face plate 6 with the 3rd boss with the use of the 3rd step 21.
Be positioned at the runner that front model cavity enters glue point place and stud with cooling block 22.The two ends on cutter 4 top, top form cutting edge of a knife or a sword mouth 23, and the centre on cutter top, top has locating notch 24.The upper end running through the thimble 25 of rear mold is positioned at the runner of rear model cavity, conflicts on the surface of Ejector Retainer Plate 9 through after top knife face plate 6, top cutter base plate 7 and thimble panel 10 successively in lower end.
When the present invention uses, after injection moulding completes cooling, during die sinking, front mould push rod 14 is ejected by flexible rod 15, ensures that top cutter 4 does not first eject.When after die sinking certain distance, top cutter is ejected, by gate cutting by the power of spring 12.By thimble panel 10 and the thimble 25 on Ejector Retainer Plate 9, product is ejected again.After product drops before matched moulds, thimble panel and Ejector Retainer Plate first by spring reset, while matched moulds, are first contacted with release link 8 by front mould thimble 14, and protection top cutter does not bump against with front mould; Last matched moulds completes, and injection moulding is produced.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. automatic gate cutting structure in injection mold mould, comprise front mould (1) and with front mould with the use of rear mold (2), rear mold (2) is fixedly connected on die holder (3), it is characterized in that,
The runner being positioned at rear model cavity is provided with one can by the top cutter (4) of gate cutting, the upper end that the bottom and of this top cutter (4) is connected to the push rod (5) in rear mold is fixedly connected with, cutter (4) will be pushed up by push rod (5) during die sinking release and then cut off cast gate, the bottom of push rod (5) is provided with top knife face plate (6) that is positioned at die holder, and this top knife face plate (6) rests one and is positioned on top cutter base plate (7) of die holder;
The both sides of described push rod (5) are respectively provided with one and are connected in rear mold and release link moving up and down (8), the lower end of push rod (5) and release link (8) is all conflicted on top cutter base plate (7) through top knife face plate (6), the below on this top cutter base plate (7) is provided with the Ejector Retainer Plate (9) and being positioned at die holder and rests thimble panel (10) on Ejector Retainer Plate (9), Ejector Retainer Plate (9) and thimble panel (10) can move up and down in die holder, multiple locating dowel (11) is provided with between top knife face plate (6) and Ejector Retainer Plate (9),
The upper cover of each locating dowel (11) has one to be positioned at the spring (12) pushed up between cutter base plate (7) and thimble panel (10), compressed at matched moulds state lower spring (12), the upper end of push rod (5) is placed in the runner of rear model cavity, the upper end of release link (8) is placed in rear mold (2), exists when push rod is released completely and ensure the stroke of gate cutting (13) between top knife face plate (6) and rear mold (2); Reset at die opening state lower spring, the reset force of spring (12) makes the upper end of push rod (5) be placed in outside the runner of rear model cavity, and the upper end of release link (8) is placed in outside rear mold;
The front mould be positioned at directly over release link is provided with the front mould push rod (14) conflicted in bottom and release link upper end, and during matched moulds, front mould push rod (14) pushes away release link (8) and is located in rear mold, thus makes spring be in compressive state.
2. automatic gate cutting structure in injection mold mould according to claim 1, it is characterized in that, the top of described front mould push rod (14) is provided with flexible rod (15), a circle first step (16) is provided with in front mould (1), one circle the first boss (17) is formed at the top of front mould push rod (14), during matched moulds, the bottom of front mould push rod (14) flushes with the bottom of front mould (1) and the bar that is reset is kept out, there is gap between first step (16) and the first boss (17), flexible rod (15) is compressed; During die sinking, utilize the reset of flexible rod (15) that the first boss (17) is conflicted on first step (16), the bottom of front mould push rod (14) is placed in outside front mould.
3. automatic gate cutting structure in injection mold mould according to claim 1 and 2, it is characterized in that, the thimble panel (10) being positioned at locating dowel (11) below has the through hole (26) that can be used for locating dowel turnover, and the upper end of locating dowel (11) is conflicted on the bottom surface on top knife face plate (6) through top cutter base plate (7) afterwards.
4. automatic gate cutting structure in injection mold mould according to claim 3, it is characterized in that, the top of described locating dowel (11) forms a circle and prevents from pushing up the second boss (18) that cutter base plate skids off from it, formed in top cutter base plate (7) circle and the second boss with the use of second step (19).
5. automatic gate cutting structure in injection mold mould according to claim 1 and 2, it is characterized in that, the bottom of described release link (8) and push rod (5) all forms a circle and prevents its 3rd boss (20) skidded off from top knife face plate, formed in top knife face plate (6) with the 3rd boss with the use of the 3rd step (21).
6. automatic gate cutting structure in injection mold mould according to claim 1 and 2, is characterized in that, is positioned at the runner that front model cavity enters glue point place and studs with a cooling block (22).
7. automatic gate cutting structure in injection mold mould according to claim 1 and 2, is characterized in that, the bottom on described top cutter (4) adopts with the top of push rod (5) and is threaded.
8. automatic gate cutting structure in injection mold mould according to claim 1 and 2, is characterized in that, the two ends on cutter (4) top, described top form cutting edge of a knife or a sword mouth (23), and the centre on cutter top, top has locating notch (24).
9. automatic gate cutting structure in injection mold mould according to claim 1 and 2, is characterized in that, described top cutter spacing is entered in the runner at glue point place in rear model cavity.
10. automatic gate cutting structure in injection mold mould according to claim 1 and 2, it is characterized in that, one upper end running through the thimble (25) of rear mold is positioned at the runner of rear model cavity, and lower end is conflicted on the surface of Ejector Retainer Plate (9) through top knife face plate (6), top cutter base plate (7) and thimble panel (10) successively afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476434.9A CN104227996B (en) | 2014-09-18 | 2014-09-18 | Automatic gate cutting structure in injection mold mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476434.9A CN104227996B (en) | 2014-09-18 | 2014-09-18 | Automatic gate cutting structure in injection mold mould |
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| CN104227996A true CN104227996A (en) | 2014-12-24 |
| CN104227996B CN104227996B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410476434.9A Active CN104227996B (en) | 2014-09-18 | 2014-09-18 | Automatic gate cutting structure in injection mold mould |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108673850A (en) * | 2018-07-07 | 2018-10-19 | 苏州华吉威自动化设备有限公司 | A kind of injection moulding die casting mouth automatic shearing mechanism |
| CN109849285A (en) * | 2018-12-26 | 2019-06-07 | 东莞广泽汽车饰件有限公司 | A kind of injection forming mold of automobile cup holder panel |
| CN110181776A (en) * | 2019-07-05 | 2019-08-30 | 英力电子科技（重庆）有限公司 | The injection mold of automatic cutoff in a kind of mould |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1034712A (en) * | 1996-07-19 | 1998-02-10 | Hitachi Telecom Technol Ltd | Gate cutting device in structure of mold for molding |
| CN202592679U (en) * | 2012-04-09 | 2012-12-12 | 东莞市广联塑胶模具制品有限公司 | Ejecting and cutting mechanism used in injection mold |
| CN203527787U (en) * | 2013-10-17 | 2014-04-09 | 苏州市利来星辰塑业科技有限公司 | Injection mould |
| CN103978639A (en) * | 2014-05-27 | 2014-08-13 | 泉州华硕实业有限公司 | Injection mold for automatically cutting off injection gate |
| CN204054530U (en) * | 2014-09-18 | 2014-12-31 | 浙江中财管道科技股份有限公司 | Automatic gate cutting structure in injection mold mould |
-
2014
- 2014-09-18 CN CN201410476434.9A patent/CN104227996B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1034712A (en) * | 1996-07-19 | 1998-02-10 | Hitachi Telecom Technol Ltd | Gate cutting device in structure of mold for molding |
| CN202592679U (en) * | 2012-04-09 | 2012-12-12 | 东莞市广联塑胶模具制品有限公司 | Ejecting and cutting mechanism used in injection mold |
| CN203527787U (en) * | 2013-10-17 | 2014-04-09 | 苏州市利来星辰塑业科技有限公司 | Injection mould |
| CN103978639A (en) * | 2014-05-27 | 2014-08-13 | 泉州华硕实业有限公司 | Injection mold for automatically cutting off injection gate |
| CN204054530U (en) * | 2014-09-18 | 2014-12-31 | 浙江中财管道科技股份有限公司 | Automatic gate cutting structure in injection mold mould |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108673850A (en) * | 2018-07-07 | 2018-10-19 | 苏州华吉威自动化设备有限公司 | A kind of injection moulding die casting mouth automatic shearing mechanism |
| CN109849285A (en) * | 2018-12-26 | 2019-06-07 | 东莞广泽汽车饰件有限公司 | A kind of injection forming mold of automobile cup holder panel |
| CN109849285B (en) * | 2018-12-26 | 2023-09-29 | 东莞广泽汽车饰件有限公司 | Injection molding die of automobile cup stand panel |
| CN110181776A (en) * | 2019-07-05 | 2019-08-30 | 英力电子科技（重庆）有限公司 | The injection mold of automatic cutoff in a kind of mould |
| CN110181776B (en) * | 2019-07-05 | 2024-04-19 | 英力电子科技（重庆）有限公司 | Injection mold capable of automatically cutting materials in mold |
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| Publication number | Publication date |
|---|---|
| CN104227996B (en) | 2016-07-06 |
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