CN102653124A - Automatic cutting device of restrictive pouring gate of injection mold - Google Patents
Automatic cutting device of restrictive pouring gate of injection mold Download PDFInfo
- Publication number
- CN102653124A CN102653124A CN2012101643663A CN201210164366A CN102653124A CN 102653124 A CN102653124 A CN 102653124A CN 2012101643663 A CN2012101643663 A CN 2012101643663A CN 201210164366 A CN201210164366 A CN 201210164366A CN 102653124 A CN102653124 A CN 102653124A
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- China
- Prior art keywords
- cover plate
- cutting knife
- cast gate
- stripper
- pouring gate
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- 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.)
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an automatic cutting device of a restrictive pouring gate of an injection mold, aiming at automatically cutting off a pouring gate while injecting, moulding and de-moulding a plastic part. The automatic cutting device is characterized in that a rightward fixed cutter is arranged in the middle of a cover plate and passes through corresponding holes of the cover plate, a cushion plate, a fixing plate and a stripper plate to be aligned to the root part of the pouring gate; a distance is reserved between the upper end face of an ejection rod and the stripper plate and the distance is greater than a plurality of times of the thickness of a connection part between a pouring gate material and the part; the hole in the stripper plate is in clearance fit with the shape of the cutter and the gap is less than or equal to an overflowing edge value of used plastic; and the other holes are through holes. According to the automatic cutting device of the restrictive pouring gate of the injection mold disclosed by the invention, a manual or mechanical machining pouring gate removing procedure is omitted, the production efficiency is improved and the production cost is reduced.
Description
Technical field
The invention belongs to the injection molding technical field, relate to the mould structure that cast gate excises automatically in the injection forming mold, the automatic device for excising of particularly a kind of restricted cast gate.
Background technology
At present, in the injection molding technical field, adopting restricted cast gate mould manufactured parts is after the part injection mo(u)lding, to carry out the demoulding; Plastic part and cast gate connect together after the demoulding; Its gate portions needs one craft or machined preface to remove, and for a multi-cavity mold production often of injection mo(u)lding part, production efficiency is higher; Part is removed time that cast gate takies and is surpassed time of injection mo(u)lding, and production cost is high.
Summary of the invention
The objective of the invention is to realize that plastic part injection mo(u)lding demoulding while cast gate excises automatically, provide a kind of minimizing craft or machined to remove the cast gate operation, enhance productivity the automatic device for excising of the restricted cast gate of a kind of injection mold that reduces production costs.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
The automatic device for excising of the restricted cast gate of a kind of injection mold is followed successively by hydraulic mandril, push pedal, cover plate, backing plate, fixed head, core, stripper, swaging die from the bottom to top and is installed in the sprue puller at fixed head middle part; It is characterized in that: also comprise being fixed on the cutting knife that the cover plate middle part takes over; The cutting edge of said cutting knife is on the top; It passes cover plate, backing plate, fixed head and aims at the cast gate root with the corresponding aperture of stripper; The cutting knife bottom is embedded in the cover plate lower surface and with the cover plate lower surface to be fixed, and cutting knife quantity is identical with cast gate quantity; Between cover plate and backing plate and be enclosed within the spring on the push rod, be fixed on the keep left push rod on limit of cover plate middle part, said push rod passes cover plate, and lower surface and the cover plate of its push rod are connected, and said cover plate is connected with push pedal to be fixed; Have cutting knife to pass corresponding hole on said stripper, fixed head, backing plate and the cover plate, hole shape is consistent with the cutting knife profile, and said push pedal is connected fixing with cover plate;
Between the upper surface of described push rod and the stripper distance is arranged, this distance should be greater than several times cast gate material and part connecting portion thickness;
Hole on the described stripper and cutting knife profile are matched in clearance, and its gap is less than or equal to the excessive boundary values of used plastics, and all the other are via hole.
Because the present invention adopts such scheme, with prior art following beneficial effect is arranged relatively:
1, the present invention has realized automatic desprucing, has improved production efficiency, reduces production costs;
2, the present invention and injection mold are integrated, and have reduced working area.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
As shown in the figure; The automatic device for excising of the restricted cast gate of a kind of injection mold is followed successively by hydraulic mandril 13, push pedal 1, cover plate 2, backing plate 4, fixed head 5, core 7, stripper 10, swaging die 15 from the bottom to top, is installed in the sprue puller 9 at fixed head 5 middle parts and is fixed on the cutting knife 3 that cover plate 2 middle parts take over; The cutting edge of said cutting knife 3 is on the top; Its corresponding aperture that passes cover plate 2, backing plate 4, fixed head 5 and stripper 10 is aimed at the cast gate root; Cutting knife 3 bottoms are embedded in cover plate 2 lower surfaces and with cover plate 2 lower surfaces and make even, and fix with screw, and cutting knife 3 quantity are identical with cast gate quantity; Between cover plate 2 and the backing plate 4 and the free height that is enclosed within the spring 12 on the push rod 11 greater than cover plate 2 and backing plate 4 between the about 10mm of distance; Be fixed on the keep left push rod 11 on limit of cover plate 2 middle parts and pass cover plate 2, its lower surface and cover plate 2 lower surfaces are made even and are connected with cover plate 2, between its upper surface and the stripper 10 certain distance are arranged, and this distance should be greater than several times cast gate material and part connecting portion thickness; Said cover plate 2 is connected fixing with push pedal 1 by screw; There is cutting knife 3 to pass corresponding hole on said stripper 10, fixed head 5, backing plate 4 and the cover plate 2; Hole shape is consistent with cutting knife 3 profiles; Wherein: hole on the stripper 10 and cutting knife 3 profiles are matched in clearance, and its gap is less than or equal to the excessive boundary values of used plastics, and all the other are via hole; Said push pedal 1 is connected fixing with cover plate 2 by screw.
The course of work and the principle of the automatic device for excising of the restricted cast gate of a kind of injection mold of the present invention
After the plastic part injection mo(u)lding, the part knockout course is carried out in the mould die sinking; Hydraulic mandril 13 acts on push pedal 1, and push pedal 1 promotes push rod 11 advances with cutting knife 3, because there is a segment distance push rod 11 upper surfaces apart from stripper 10; Make push rod 11 acting asynchronous with cutting knife 3; Form the differential of stripper 10 and cutting knife 3, realized carrying out the part demoulding again behind the excision cast gate in the part knockout course, reached the purpose of automatic desprucing in the knockout course; Utilize the effect of spring 12 that cutting knife 3 and push rod 11 are resetted in advance before the mold closing, carry out next mould production behind the mold closing.
After selecting the injection mold completion injection mo(u)lding of restricted cast gate for use, during the demoulding of die sinking part, advance by the hydraulic mandril 13 promotion push pedals 1 of injection machine; Push pedal 1 promotes cutting knife 3 advances with push rod 11 together, and cutting knife 3 begins to excise gate portions, after cutting knife 3 advances certain distance; With the cast gate excision, at this moment push rod 11 promotion strippers 10 are deviate from plastic and running channel material from core 7 and sprue puller 9, subsequently hydraulic mandril 13 returns; Effect lower cutter 3 at spring 12 resets with push rod 11; Mould begins mold closing, simultaneously stripper 10 is resetted, and carries out next mould cyclic production; Realized the automatic excision purpose of restricted cast gate.
Claims (3)
1. automatic device for excising of the restricted cast gate of injection mold is followed successively by hydraulic mandril (13), push pedal (1), cover plate (2), backing plate (4), fixed head (5), core (7), stripper (10), swaging die (15) from the bottom to top and is installed in the sprue puller (9) at fixed head (5) middle part; It is characterized in that: also comprise being fixed on the cutting knife (3) that cover plate (2) middle part takes over; The cutting edge of said cutting knife is on the top; It passes cover plate, backing plate, fixed head and aims at the cast gate root with the corresponding aperture of stripper; The cutting knife bottom is embedded in the cover plate lower surface and with the cover plate lower surface to be fixed, and cutting knife quantity is identical with cast gate quantity; Between cover plate and the backing plate and be enclosed within the spring (12) on the push rod (11), be fixed on the keep left push rod on limit of cover plate middle part, said push rod passes cover plate, and lower surface and the cover plate of its push rod are connected, and said cover plate is connected with push pedal to be fixed; Have cutting knife to pass corresponding hole on said stripper, fixed head, backing plate and the cover plate, hole shape is consistent with the cutting knife profile, and said push pedal is connected fixing with cover plate.
2. the automatic device for excising of the restricted cast gate of a kind of injection mold according to claim 1 is characterized in that: between the upper surface of described push rod and the stripper distance is arranged, this distance should be greater than several times cast gate material and part connecting portion thickness.
3. the automatic device for excising of the restricted cast gate of a kind of injection mold according to claim 1 is characterized in that: hole on the described stripper and cutting knife profile are matched in clearance, and its gap is less than or equal to the excessive boundary values of used plastics, and all the other are via hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101643663A CN102653124A (en) | 2012-05-24 | 2012-05-24 | Automatic cutting device of restrictive pouring gate of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101643663A CN102653124A (en) | 2012-05-24 | 2012-05-24 | Automatic cutting device of restrictive pouring gate of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102653124A true CN102653124A (en) | 2012-09-05 |
Family
ID=46728931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101643663A Pending CN102653124A (en) | 2012-05-24 | 2012-05-24 | Automatic cutting device of restrictive pouring gate of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102653124A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06344397A (en) * | 1993-06-07 | 1994-12-20 | Aron Kasei Co Ltd | Gate cutting method in injection mold |
| CN1986191A (en) * | 2006-12-25 | 2007-06-27 | 胡志军 | Thermosetting injection mold for plastic packaged motor assembly |
| CN201271991Y (en) * | 2008-10-06 | 2009-07-15 | 中国华录·松下电子信息有限公司 | Gate automatic cutting side gate mould apparatus |
| CN201389955Y (en) * | 2009-02-25 | 2010-01-27 | 浙江凯华模具有限公司 | Twisting off device for large gates of injection molds |
| CN202029346U (en) * | 2011-03-18 | 2011-11-09 | 宁海县永诚模具有限公司 | Stripper head mechanism for pinpoint gate of injection mold |
| CN102241110A (en) * | 2011-05-17 | 2011-11-16 | 北京东明兴业科技有限公司 | Automatic hot-cutting side gate injection mold, and gate cutter and injection molding process thereof |
| CN202656428U (en) * | 2012-05-24 | 2013-01-09 | 山西惠丰机械工业有限公司 | Injection mould restrictive sprue automatic removal device |
-
2012
- 2012-05-24 CN CN2012101643663A patent/CN102653124A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06344397A (en) * | 1993-06-07 | 1994-12-20 | Aron Kasei Co Ltd | Gate cutting method in injection mold |
| CN1986191A (en) * | 2006-12-25 | 2007-06-27 | 胡志军 | Thermosetting injection mold for plastic packaged motor assembly |
| CN201271991Y (en) * | 2008-10-06 | 2009-07-15 | 中国华录·松下电子信息有限公司 | Gate automatic cutting side gate mould apparatus |
| CN201389955Y (en) * | 2009-02-25 | 2010-01-27 | 浙江凯华模具有限公司 | Twisting off device for large gates of injection molds |
| CN202029346U (en) * | 2011-03-18 | 2011-11-09 | 宁海县永诚模具有限公司 | Stripper head mechanism for pinpoint gate of injection mold |
| CN102241110A (en) * | 2011-05-17 | 2011-11-16 | 北京东明兴业科技有限公司 | Automatic hot-cutting side gate injection mold, and gate cutter and injection molding process thereof |
| CN202656428U (en) * | 2012-05-24 | 2013-01-09 | 山西惠丰机械工业有限公司 | Injection mould restrictive sprue automatic removal device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120905 |