CN103737813A - Injection molding mold parting surface structure - Google Patents
Injection molding mold parting surface structure Download PDFInfo
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- CN103737813A CN103737813A CN201310749726.0A CN201310749726A CN103737813A CN 103737813 A CN103737813 A CN 103737813A CN 201310749726 A CN201310749726 A CN 201310749726A CN 103737813 A CN103737813 A CN 103737813A
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- Prior art keywords
- cushion block
- injection mold
- mold
- guide pillar
- injection molding
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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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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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 injection molding mold parting surface structure in the field of automobile spare parts, wherein an injection molding mold comprises a moving mold frame and a fixed mold frame; a mold core is arranged between the moving mold frame and the fixed mold frame; at the periphery of the mold core, the contact surface between the bottom surface of the moving mold frame and the top surface of the fixed mold frame is a parting surface; four corners of the top surface of the fixed mold frame are respectively provided with cuboid concave tables; a guide column is respectively inserted into the center of the bottom surface of each concave table, and a cushion block is correspondingly sleeved on the outer side of each guide column; the top surface of each cushion block is higher than the parting surface. The technical scheme is as follows: when an injection molding mold is tried to manufacture and produce, the injection molding mold is opened, and the cushion blocks are taken down, and the heights of the top surfaces of the cushion blocks are lowered so as to reach the aim of lowering the surface of the parting surface of the injection molding mold, so that the mold locking force per area of the mold core of the injection molding mold is improved; the injection molding part flash is removed effectively; the difficulty of removing flash is reduced; the time for removing flash is saved.
Description
Technical field
The present invention relates to a kind of injection mold parting surface structure in auto parts machinery field.
Background technology
The plastic product kind in auto parts machinery field is more and more, and structural design becomes increasingly complex, and like this, the design of injection mold structure also becomes increasingly complex.Current injection mold comprises dynamic model frame 1 and cover half frame 2, between dynamic model frame 1 and cover half frame 2, be provided with a core rod (all not showing in Fig. 1 and Fig. 2), this core rod be by with the fixing upper mold core in dynamic model frame 1 bottom surface, and form with cover half frame 2 end faces fixing lower mold core.Along the surrounding of this core rod, the contact-making surface between the bottom surface of dynamic model frame 1 and the end face of cover half frame 2 is die joint.Difficult point in Injection Mold Design is the design of parting surface structure at present, and the design of die joint is unreasonable, causes working of plastics easily to go out overlap.
The common method of deflashing at present mainly contains two: freeze or do empty avoiding.
Freezing is exactly to remove injection mold, there being overlap place, the end face of the bottom surface of upper mold core or lower mold core is repaired by freezing, and after several years, the bottom surface of upper mold core or the end face of lower mold core have been mended a circle substantially, have a strong impact on the life-span of injection mold itself.Although the end end face of the bottom surface of upper mold core or lower mold core is freezed and can be dealt with problems among a small circle, but freezing to upper mold core or lower mold core itself is also a kind of damage, because the hardness of upper mold core or lower mold core is up to 54HRC, therefore upper mold core or lower mold core easy cracking after weldering is burnt, causes the life-span of injection mold greatly to decline.
Do empty avoiding and be exactly making the die joint of injection mold reduce 0.2mm to 0.4mm, like this process time of cover half frame 2 or dynamic model frame 1 long, sometimes because die joint is not a face but curved surface and difficult processing.
Therefore, how to solve and allow some leeway for overlap, for deflashing facilitate and do not affect injection mold this technical problem in service life be row those skilled in the art all pay close attention to.
Summary of the invention
The object of the invention is, in order to overcome the deficiencies in the prior art, provides a kind of injection mold parting surface structure, and it can be in design early stage just for overlap be allowed some leeway, and when facilitating for deflashing, the service life of assurance injection mold.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of injection mold parting surface structure, described injection mold comprises dynamic model frame and cover half frame, between described dynamic model frame and described cover half frame, be provided with a core rod, in the surrounding of described core rod, the contact-making surface between the bottom surface of described dynamic model frame and the end face of described cover half frame is described die joint;
On four drift angles of the end face of described cover half frame, be respectively equipped with concave station, described concave station be shaped as cuboid, described in each, on the bottom surface of concave station, be plugged with respectively a guide pillar, and a corresponding cushion block that is socketed in described guide pillar outside, the end face of described cushion block is higher than described die joint.
Further, described cushion block accounts for 1/10th of described cushion block total height higher than the height of the part of described die joint.
Further, described cushion block fills up described concave station.
Further, described cushion block is bolted on the bottom surface of described concave station.
Further, empty avoiding between described guide pillar and described cushion block.
Further, described guide pillar runs through described dynamic model frame, between every described guide pillar and described dynamic model frame, is all provided with guide pillar guide pin bushing.
Further, the outer rim of the outer rim of described cushion block bottom surface and inner edge and described cushion block end face and inner edge are all provided with chamfering.
Adopted a kind of injection mold parting surface structure of the present invention, on four drift angles of the end face of cover half frame, increase respectively a concave station, concave station be shaped as cuboid, on the bottom surface of each concave station, be plugged with respectively a guide pillar, and a corresponding cushion block that is socketed in guide pillar outside, the end face of cushion block is higher than the technical scheme of die joint.Its technique effect is: when injection mold trial-production and production, as there is overlap in injection-moulded plastic part, open injection mold, take off cushion block, the height that falls heelpiece piece end face just can reach the object of injection mold die joint being fallen to face, thereby improves the clamp force of injection mold core rod unit are and effectively remove the object of injection-moulded plastic part overlap, thereby has reduced the difficulty of deflashing, save the time of deflashing, and guaranteed the service life of injection mold.
Accompanying drawing explanation
Fig. 1 is for adopting the top view of the injection mold of a kind of injection mold parting surface structure of the present invention.
Fig. 2 is the A-A face cutaway view of Fig. 1.
Fig. 3 is the enlarged diagram of A part in Fig. 2.
Fig. 4 is the scheme of installation of cover half frame and cushion block in a kind of injection mold parting surface structure of the present invention.
Fig. 5 is the top view of cushion block in a kind of injection mold parting surface structure of the present invention.
The specific embodiment
Refer to Fig. 1 to Fig. 5, the present inventor is in order to understand technical scheme of the present invention better, below by embodiment particularly, and is described in detail by reference to the accompanying drawings:
Refer to Fig. 1 to Fig. 5, adopt the injection mold of a kind of injection mold parting surface structure of the present invention, comprise the dynamic mould fixing plate 4, dynamic model seat 5, dynamic model frame 1, cover half frame 2, cover half seat 6 and the cover half fixed head 7 that set gradually from top to bottom.Between dynamic model frame 1 and cover half frame 2, be provided with a core rod (in Fig. 1 and Fig. 2 all do not show), this core rod be by with the fixing upper mold core in dynamic model frame 1 bottom surface, and form with cover half frame 2 end faces fixing lower mold core.Along the surrounding of this core rod, the contact-making surface between the bottom surface of dynamic model frame 1 and the end face of cover half frame 2 is the die joint of injection mold.
A kind of injection mold parting surface structure of the present invention, on four drift angles of the end face of cover half frame 2, be respectively equipped with a concave station 21, concave station 21 be shaped as cuboid or square, in the bottom surface of each concave station 21, be plugged with respectively in the heart a guide pillar 22, an and corresponding cushion block 23 that is socketed in guide pillar 22 outsides, the end face of cushion block 23 is higher than die joint, i.e. the end face of cover half frame 2.Four guide pillars 22 correspondence on four drift angles of dynamic model frame 1 runs through dynamic model frame 1, dynamic model frame 1 and guide pillar 22 radially between be socketed with guide pillar guide pin bushing 11.
The object of design is like this; During die trial; if there is overlap in the injection-moulded plastic part of injection mould processing; open injection mold; pull down cushion block 23, adopt plain-milling machine or grinding machine, the end face of cushion block 23 is processed; face operation is fallen in cushion block 23; the end face of cushion block 23 is reduced to after specified size, then cover installs on the guide pillar 22 of cover half frame 2 again, so substantially there is not the die trial problem of installing for the second time in die trial.In large-scale production process, if there is overlap in injection-moulded plastic part, open injection mold, directly pull down cushion block 23, adopt plain-milling machine or grinding machine to fall face operation to the end face of cushion block 23, therefore after cushion block 23 processes, cover is received on guide pillar 22 again again, and the whole injection mold of unnecessary repetition dismounting occurs overlap and need to modify to injection mold time at injection-moulded plastic part, without the whole injection mold of dismounting, as long as open injection mold, pull down cushion block 23, therefore seem very convenient.Than being freezed, upper mold core and lower mold core repair simultaneously or the operation that fractal area is done empty avoiding improved the locked mode ability of core rod unit are, it is the locked mode ability of unit are between upper mold core and lower mold core, face operation is fallen in cushion block 23 and seem much easier, size is more easily controlled, do not injure core rod, thereby do not affect the service life of injection mold yet.
In order to prevent the friction between cushion block 23 and guide pillar 22, empty avoiding between guide pillar 22 and cushion block 23, guide pillar 22 and cushion block 23 leave gap between radially, and the width d in this gap is about 0.5mm.
In order to guarantee empty avoiding between guide pillar 22 and cushion block 23, cushion block 23 fills up concave station 21, and the area of cushion block 23 bottom surfaces and end face equates with the area of concave station 21 bottom surfaces, as shown in Figures 2 and 3, and to prevent that the position of cushion block 23 is offset.Cushion block 23 is bolted on the bottom surface of concave station 21 simultaneously, to prevent that the position of cushion block 23 is offset, guarantees the empty avoiding between guide pillar 22 and cushion block 23.While wanting dismounting cushion block 23, back out this bolt.In the present embodiment, each cushion block 23 is that the bolt being positioned on two diagonal angles of cushion block 23 end face by correspondence is fixing.
In order to reduce the injection-moulded plastic part generation overlap in injection mold, cushion block 23 accounts for 1/10th of cushion block 23 overall height H higher than the height h of the part of die joint, in the present embodiment, and cushion block 23 length and the wide 55mm that are respectively, high 10mm, the height h that wherein exceeds die joint part is 1mm.
The effect of guide pillar guide pin bushing 11 is to reduce the wearing and tearing of guide pillar 22, and the normal operation and the service life that guarantee injection mold.The outer wall of guide pillar guide pin bushing 11 is provided with guide pillar guide pin bushing flange 111, and guide pillar guide pin bushing 11 is fixing with dynamic model frame 1 by guide pillar guide pin bushing flange 111, to reduce the outer wall of guide pillar 22 and the friction between guide pillar guide pin bushing 11, to guarantee normal operation and the service life of injection mold.
For guide pillar 22 is fixing with cover half frame 2, guide pillar 22 runs through cover half frame 2, and fixes with the bottom of cover half frame 2 by being positioned at the guide pillar flange 221 of its bottom.
For the ease of opening of injection mold, inner edge and the outer rim of guide pillar guide pin bushing 11 end faces, and the inner edge of guide pillar guide pin bushing 11 bottom surfaces is provided with chamfering, the outer rim rounding of guide pillar guide pin bushing 11 bottom surfaces.
For the ease of cushion block 23 being fallen to face operation, and the installation of being convenient to cushion block 23, the outer rim of cushion block 23 bottom surfaces, the inner edge of bottom surface are, the inner edge of the outer rim of end face and end face is all provided with chamfering.
Claims (7)
1. an injection mold parting surface structure, described injection mold comprises dynamic model frame (1) and cover half frame (2), between described dynamic model frame (1) and described cover half frame (2), be provided with a core rod, in the surrounding of described core rod, the contact-making surface between the bottom surface of described dynamic model frame (1) and the end face of described cover half frame (2) is described die joint; It is characterized in that:
On four drift angles of the end face of described cover half frame (2), be respectively equipped with concave station (21), described concave station (21) be shaped as cuboid, on the bottom surface of concave station described in each (21), be plugged with respectively a guide pillar (22), and correspondence is socketed in a cushion block (23) in described guide pillar (22) outside, the end face of described cushion block (23) is higher than described die joint.
2. a kind of injection mold parting surface structure according to claim 1, is characterized in that: described cushion block (23) accounts for 1/10th of described cushion block (23) total height higher than the height of described die joint part.
3. a kind of injection mold parting surface structure according to claim 1 and 2, is characterized in that: described cushion block (23) fills up described concave station (21).
4. a kind of injection mold parting surface structure according to claim 1 and 2, is characterized in that: described cushion block (23) is bolted on the bottom surface of described concave station (21).
5. a kind of injection mold parting surface structure according to claim 1 and 2, is characterized in that: empty avoiding between described guide pillar (22) and described cushion block (23).
6. a kind of injection mold parting surface structure according to claim 1 and 2, is characterized in that: described guide pillar (22) runs through described dynamic model frame (1), between every described guide pillar (22) and described dynamic model frame (1), is all provided with guide pillar guide pin bushing (11).
7. a kind of injection mold parting surface structure according to claim 1 and 2, is characterized in that: outer rim and the inner edge of the outer rim of described cushion block (23) bottom surface and inner edge and described cushion block (23) end face are all provided with chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749726.0A CN103737813A (en) | 2013-12-31 | 2013-12-31 | Injection molding mold parting surface structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749726.0A CN103737813A (en) | 2013-12-31 | 2013-12-31 | Injection molding mold parting surface structure |
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| CN103737813A true CN103737813A (en) | 2014-04-23 |
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| CN201310749726.0A Pending CN103737813A (en) | 2013-12-31 | 2013-12-31 | Injection molding mold parting surface structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113211734A (en) * | 2021-05-25 | 2021-08-06 | 立臻科技(昆山)有限公司 | Injection mold |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0196987A1 (en) * | 1985-03-22 | 1986-10-08 | Cartier Industrie | Mould for manufacturing a composite article provided with at least one element with two superposed injection-moulded parts |
| JP2011016228A (en) * | 2009-07-07 | 2011-01-27 | Kyowa Seikei Kk | Method for injection-molding thin plate, and mold used for the method |
| CN102285030A (en) * | 2011-08-19 | 2011-12-21 | 江苏辉达塑模科技有限公司 | Balancing cushion block mechanism for joint faces of plastic mold |
| CN102601944A (en) * | 2012-03-28 | 2012-07-25 | 陕西工业职业技术学院 | Forced demolding device for molding plastic product |
| CN203650850U (en) * | 2013-12-31 | 2014-06-18 | 采埃孚橡胶金属(上海)有限公司 | Parting surface structure of injection mould |
-
2013
- 2013-12-31 CN CN201310749726.0A patent/CN103737813A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0196987A1 (en) * | 1985-03-22 | 1986-10-08 | Cartier Industrie | Mould for manufacturing a composite article provided with at least one element with two superposed injection-moulded parts |
| JP2011016228A (en) * | 2009-07-07 | 2011-01-27 | Kyowa Seikei Kk | Method for injection-molding thin plate, and mold used for the method |
| CN102285030A (en) * | 2011-08-19 | 2011-12-21 | 江苏辉达塑模科技有限公司 | Balancing cushion block mechanism for joint faces of plastic mold |
| CN102601944A (en) * | 2012-03-28 | 2012-07-25 | 陕西工业职业技术学院 | Forced demolding device for molding plastic product |
| CN203650850U (en) * | 2013-12-31 | 2014-06-18 | 采埃孚橡胶金属(上海)有限公司 | Parting surface structure of injection mould |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113211734A (en) * | 2021-05-25 | 2021-08-06 | 立臻科技(昆山)有限公司 | Injection mold |
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Application publication date: 20140423 |