CN104227996B - Automatic gate cutting structure in injection mold mould - Google Patents
Automatic gate cutting structure in injection mold mould Download PDFInfo
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- CN104227996B CN104227996B CN201410476434.9A CN201410476434A CN104227996B CN 104227996 B CN104227996 B CN 104227996B CN 201410476434 A CN201410476434 A CN 201410476434A CN 104227996 B CN104227996 B CN 104227996B
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- push rod
- knife face
- front mould
- face plate
- gate cutting
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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 automatic pouring gate structure earnestly in a kind of injection mold mould.Cutting pouring gate structure in existing mould more, but it is unreliable mostly to there is structure, it is easy to lost efficacy, structure complexity cost is relatively big, or is only applicable to little cast gate, even needs change product structure and outward appearance.It is a feature of the present invention that, be positioned at the runner of rear model cavity be provided with one can by the top cutter of gate cutting, the upper end of the push rod that the bottom of this top cutter is connected in rear mold with is fixing to be connected, by push rod, top cutter is released and then cut off cast gate during die sinking, the bottom of push rod is provided with a top knife face plate being positioned at die holder, and this top knife face plate rests on one and is positioned on the top cutter base plate of die holder.Cast gate and product can be efficiently separated by the present invention automatically, and simple in construction is easy and simple to handle, and work efficiency is high, and labor intensity is low, and cost is low.
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, be all style big water gap cold runner, enters glue point relatively big, 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 the industrial grade to operator to require higher；And product after injection moulding is boiling hotter, PVC material is again partially hard raw material, and when producing in enormous quantities, labor intensity is too high, inefficiency.
Cutting pouring gate structure in existing mould more, but it is unreliable mostly to there is structure, it is easy to lost efficacy, structure complexity cost is relatively big, or is only applicable to little cast gate, even needs change product structure and outward appearance.
Summary of the invention
The technical problem to be solved is the defect overcoming above-mentioned prior art to exist, directly by the automatic gate cutting structure of cast gate Yu product separation in mould when providing a kind of production, to reduce labor intensity, improve work efficiency, reduce the industrial grade requirement of production cost and operator.
For this, the present invention adopts the following technical scheme that: automatic gate cutting structure in injection mold mould, including 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, be positioned at the runner of rear model cavity be provided with one can by the top cutter of gate cutting, the upper end of the push rod that the bottom of this top cutter is connected in rear mold with is fixing to be connected, by push rod, top cutter is released and then cut off cast gate during die sinking, the bottom of push rod is provided with a top knife face plate being positioned at die holder, and this top knife face plate rests on 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 both passes through top knife face plate and conflicts on the cutter base plate of top, being connected with of this top cutter base plate is positioned at the thimble panel that an Ejector Retainer Plate and of die holder rests 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；
Each locating dowel is cased with a spring between top 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, exist between top knife face plate and rear mold push rod completely out time ensure the stroke of gate cutting；Resetting 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；
Being positioned at the front mould directly over release link and be provided with the front mould push rod conflicted in bottom and release link upper end, during matched moulds, front mould push rod pushes away release link and is located in rear mold, so that spring is in compressive state.
As preferably, the top of described front mould push rod is provided with flexible rod, a circle first step it 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, and flexible rod is compressed；During die sinking, utilizing the reset of flexible rod to make the first boss conflict on first step, the bottom of front mould push rod is placed in outside front mould.By flexible rod as ejecting force, acting on front mould push rod when matched moulds and make release link reset, 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, it is positioned at the thimble panel below locating dowel and 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 after the cutter base plate of top, described through hole can regulate top cutter eject distance (namely mould eject when inadequate, the lower end of locating dowel is placed in through hole).
As preferably, the second boss that a circle prevents top cutter base plate from skidding off from it is formed at the top of described locating dowel, 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 is respectively formed a circle and prevents its 3rd boss skidded off from the knife face plate of top, formed in the knife face plate of top with the 3rd boss with the use of the 3rd step.
As preferably, it is positioned at front model cavity and enters the runner at glue point place and stud with a cooling block, it is ensured that the glue point that enters of front model cavity quickly cools down.
As preferably, the bottom of described top cutter adopts with the top of push rod threadeds, 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 cast gate is positioned by locating notch, 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, so that product can separate with cast gate connecting place better, it is ensured 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 after sequentially passing through top knife face plate, top cutter base plate and thimble panel in lower end.After cutting off cast gate, thimble is utilized to be ejected by product.
When the invention have the benefit that die sinking, cast gate and product can be efficiently separated by top cutter automatically, and simple in construction is easy and simple to handle, easy to adjust, shears smooth, and work efficiency is high, and labor 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 the 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-the first boss, 18-the 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 depicted, front mould 1 and rear mold 2 with the use of, rear mold 2 is fixedly connected on die holder 3, be positioned at rear model cavity enter that the runner at glue point place is provided with can by the top cutter 4 of gate cutting, the bottom employing screw thread of this top cutter 4 is fixing with the upper end of the push rod 5 being connected in rear mold to be connected, top cutter 4 is released by push rod 5 and then cuts off cast gate during die sinking, the bottom of push rod 5 is provided with the top knife face plate 6 in die holder, and this top knife face plate 6 rests on the top cutter base plate 7 being positioned at 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 both passes through top knife face plate 6 and conflicts on the cutter base plate 7 of top, the thimble panel 10 being connected with being positioned at the Ejector Retainer Plate 9 of die holder and resting on Ejector Retainer Plate 9 of this top cutter base plate 7, 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.
Each locating dowel 11 is cased with 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, exist between top knife face plate 6 and rear mold 2 push rod completely out time ensure the stroke 13 of gate cutting.Resetting 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.
Being positioned at the front mould directly over release link and be provided with the front mould push rod 14 conflicted in bottom and release link upper end, during matched moulds, front mould push rod 14 pushes away release link 8 and is located in rear mold, so that spring is in compressive state.
The top of front mould push rod 14 is provided with the flexible rod 15 being made up of tendon Bovis seu Bubali material, a circle first step 16 it 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, utilizing 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.
Being positioned at the thimble panel 10 below locating dowel 11 and have the through hole 26 that can be used for locating dowel turnover, the upper end of locating dowel 11 is conflicted on the bottom surface of top knife face plate 6 after the cutter base plate 7 of top.The second boss 18 that one circle prevents top cutter base plate from skidding off from it is formed at the top of locating dowel 11, 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 is respectively formed a circle and prevents it from the 3rd boss 20 that skids off the knife face plate of top, formed in top knife face plate 6 with the 3rd boss with the use of the 3rd step 21.
It is positioned at front model cavity to enter the runner at 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, and lower end is conflicted on the surface of Ejector Retainer Plate 9 after sequentially passing through top knife face plate 6, top cutter base plate 7 and thimble panel 10.
When the present invention uses, after injection moulding completes cooling, during die sinking, front mould push rod 14 is ejected by flexible rod 15, it is ensured that top cutter 4 does not first eject.When, after die sinking certain distance, top cutter is ejected by the power of spring 12, by gate cutting.Product is ejected with the thimble 25 on Ejector Retainer Plate 9 again through thimble panel 10.Product drop after before matched moulds, thimble panel and Ejector Retainer Plate first pass through 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 produces.
Specific embodiment described herein is only to present invention spirit explanation for example.Described specific embodiment can be made various amendment or supplements or adopt similar mode to substitute by those skilled in the art, but without departing from the spirit of the present invention or surmount the scope that appended claims is defined.
Claims (9)
1. automatic gate cutting structure in injection mold mould, including 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 characterised in that
Be positioned at the runner of rear model cavity be provided with one can by the top cutter (4) of gate cutting, the upper end of the push rod (5) that the bottom of this top cutter (4) is connected in rear mold with is fixing to be connected, by push rod (5), top cutter (4) is released and then cut off cast gate during die sinking, the bottom of push rod (5) is provided with top knife face plate (6) being positioned at die holder, and this top knife face plate (6) rests on 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) both passes through top knife face plate (6) and conflicts on top cutter base plate (7), being connected with of this top cutter base plate (7) is positioned at the thimble panel (10) that an Ejector Retainer Plate (9) and of die holder rests on Ejector Retainer Plate (9), Ejector Retainer Plate (9) and thimble panel (10) can move up and down in die holder, it is provided with multiple locating dowel (11) between top knife face plate (6) and Ejector Retainer Plate (9)；
Each locating dowel (11) is cased with a spring (12) being positioned 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), exist between top knife face plate (6) and rear mold (2) push rod completely out time guarantee by the stroke (13) of gate cutting；Resetting 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；
Being positioned at the front mould directly over release link and be provided with the front mould push rod (14) conflicted in bottom and release link upper end, during matched moulds, front mould push rod (14) pushes away release link (8) and is located in rear mold, so that spring is in compressive state；
The top of described front mould push rod (14) is provided with flexible rod (15), a circle first step (16) it 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, utilizing 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.
2. automatic gate cutting structure in injection mold mould according to claim 1, it is characterized in that, the thimble panel (10) being positioned at locating dowel (11) lower section 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.
3. automatic gate cutting structure in injection mold mould according to claim 2, it is characterized in that, the second boss (18) that one circle prevents top cutter base plate from skidding off from it is formed at the top of described locating dowel (11), formed in top cutter base plate (7) circle and the second boss with the use of second step (19).
4. automatic gate cutting structure in injection mold mould according to claim 1, it is characterized in that, the bottom of described release link (8) and push rod (5) is respectively formed a circle and prevents it from the 3rd boss (20) that skids off the knife face plate of top, formed in top knife face plate (6) with the 3rd boss with the use of the 3rd step (21).
5. automatic gate cutting structure in injection mold mould according to claim 1, it is characterised in that be positioned at front model cavity and enter the runner at glue point place and stud with a cooling block (22).
6. automatic gate cutting structure in injection mold mould according to claim 1, it is characterised in that the bottom on described top cutter (4) adopts with the top of push rod (5) threadeds.
7. automatic gate cutting structure in injection mold mould according to claim 1, it is characterised 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).
8. automatic gate cutting structure in injection mold mould according to claim 1, it is characterised in that described top cutter spacing is entered in the runner at glue point place in rear model cavity.
9. automatic gate cutting structure in injection mold mould according to claim 1, it is characterized in that, the upper end of one thimble (25) running through rear mold is positioned at the runner of rear model cavity, and lower end sequentially passes through top knife face plate (6), top cutter base plate (7) and thimble panel (10) and conflicts afterwards on the surface of Ejector Retainer Plate (9).
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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| Publication Number | Publication Date |
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| CN104227996A CN104227996A (en) | 2014-12-24 |
| CN104227996B true 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108673850B (en) * | 2018-07-07 | 2021-01-22 | 浙江森祥教学设备有限公司 | Automatic shearing mechanism for sprue of injection mold |
| 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 |
| 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 |
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 |
-
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 |
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| CN104227996A (en) | 2014-12-24 |
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