CN101342779A - Injection mold structure of highlight non-trace plastic member product - Google Patents
Injection mold structure of highlight non-trace plastic member product Download PDFInfo
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- CN101342779A CN101342779A CNA2008102133981A CN200810213398A CN101342779A CN 101342779 A CN101342779 A CN 101342779A CN A2008102133981 A CNA2008102133981 A CN A2008102133981A CN 200810213398 A CN200810213398 A CN 200810213398A CN 101342779 A CN101342779 A CN 101342779A
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Abstract
The invention discloses an injection moulding structure for a high light markless molded plastic product, which comprises a die cavity (1), a core (2), compound laminated layers (3), and a superposed flow channel (31). The invention adopts the technical proposal that the superposed flow channel structure is adopted, and the wall temperature of the die cavity can be controlled to rise or fall quickly as required in the jet moulding procedure. The manufactured injection mould overwhelms the problems and the defects of the moulded plastic product in the prior art that the injection moulding structure causes such poor appearance quality as weld marks, ripples, shrinkage, floating fiber, finish, and such adverse effect on inherent quality as stress accumulation, thus completely eliminating the poor appearance quality of the moulded plastic product such as weld marks, ripples, shrinkage, floating fiber, finish, and poor inherent quality resulting from stress accumulation.
Description
Technical field
The present invention relates to a kind of injection mold structure, specifically be meant the injection mold structure of a kind of highlight non-trace plastic member product that can the injection moulding highlight non-trace plastic member product.
Background technology
The injection mold of prior art, by cover half, dynamic model constitutes, the stream of plastic of HTHP liquid state is injected the mould chamber (abbreviation die cavity) that is surrounded by die cavity and core in injection moulding processing, because hot materials flow runs into the time order and function difference of cold mould chamber wall, the hot materials flow of the front end that is introduced into, when having heated mould chamber wall temperature, at first be cooled, cool off after the follow-up hot materials flow that enters, close up under follow-up hot materials flow promotes when the gradually cold hot materials flow of front end and to be full of the mould chamber, after the cooling, just stay " the fusing trace " that influences the plastic member product presentation quality at the place of closing up, above-mentioned phenomenon still causes plastic member product surface " ripple " bad, " fineness " is bad, the immediate cause that adds " floating fine " phenomenon of fine goods, study carefully its mechanism, it is the flowability of materials flow, low viscosity is that laminarity is bad, due to the turbulent flow cooling back of rolling;
In addition, the cooling of plastic member product, be with the realization that cools down gradually of the die cavity of entire die and core by water channel, the gradually cold cooling cycle is long, cooldown rate is wayward, the cooling curing speed of each point position is also different because of the wall thickness difference on the plastic member product surface, heavy wall has the position cooling of muscle slow, the position cooling that wall is thin is fast, the inhomogeneities that plastic member product cools off in die cavity is the reason of " stress accumulation " phenomenon of surperficial scraggly " it is flat to contract " phenomenon of causing plastic member product, product deformation autoclasis; Prior art is often taked to reduce the defective of plastic member product surface quality as Shooting Technique means such as control mould temperature, pressurize, dead chicks as far as possible, but can not fundamentally solve the bad total problem of above-mentioned plastic member product quality after all.
The plastic member product of having relatively high expectations for surface quality, prior art adopts " spraying paint " method to remedy the defective of said products surface quality usually, yet, spray paint (containing benzene) bring again such as: cost, scrappage, environmental protection " three wastes ", benzene are to a series of accessory problems such as enterprise employee health harm.
In sum, the injection mold structure of prior art exists " fusing trace ", " ripple ", " it is flat to contract ", " floating fine ", " fineness " presentation quality of causing plastic member product bad, and the dysgenic problems and shortcomings of " stress accumulation " inherent quality.
Summary of the invention
The injection mold structure that the present invention is directed to above-mentioned prior art exists the dysgenic problems and shortcomings of plastic member product quality, take the technical scheme of lamination fluid passage that can be controlled, be intended to make the die cavity wall temperature that surrounds by die cavity and core can be in the injection moulding program as required, controlled speed heat under the effect of superimposed fluid passage, speed is cold, a kind of injection mold structure of highlight non-trace plastic member product is provided, reach the elimination plastic member product and " fuse trace ", " ripple ", " it is flat to contract ", " floating fine ", " fineness " presentation quality is bad, and the bad purpose of " stress accumulation " inherent quality.
The object of the present invention is achieved like this: the injection mold structure of highlight non-trace plastic member product comprises die cavity, core, composite laminate, superimposed fluid passage, wherein: described die cavity is the mold insert that is fixed on cover half or the dynamic model die joint, its upper surface is provided with plastic member product model concave surface, the lower surface is provided with and the approximate equidistant wall thickness convex surface in upper surface, along convex surface be provided with many uniform, crooked semi-circular recesses, the plane at convex surface edge are provided with the closed seal bead of head and the tail; Described core is the mold insert that is fixed on cover half or the dynamic model die joint, its upper surface is provided with plastic member product model convex surface, the lower surface is provided with and the approximate equidistant wall thickness concave surface in upper surface, along concave surface be provided with many uniform, crooked semi-circular recesses, the plane of concave edge are provided with the closed seal bead of head and the tail; Described composite laminate is for fixedly being sandwiched in the member between die cavity or core and cover half or the dynamic model, its upper surface is provided with it the shape face that the lower surface of the die cavity of contact or core matches, be provided with corresponding with the semi-circular recesses of die cavity or core along the shape face, many uniform, crooked semi-circular recesses, the plane at shape face edge is provided with corresponding with the seal bead of die cavity or core, the sealed groove that head and the tail are closed, groove is embedded with the sealing strip of high temperature high voltage resistant, and its lower surface is the plane; Described superimposed fluid passage is for being superimposed together by described die cavity or core and described composite laminate, by the be put together fluid passage of full circle of the semi-circular recesses of mutual correspondence, by sealing strip, the superimposed compression seal of seal bead in the sealed groove of mutual correspondence, the groove, and by interface and mould exterior.
Operation principle and program:
The injection mold of the injection mold structure of highlight non-trace plastic member product of the present invention needs to be aided with the cooperation of high temperature and high pressure steam source, high pressure constant temperature cooling water source, compressed air source at work; During work, the mould matched moulds, the high temperature and high pressure steam source passes to high temperature and high pressure steam by interface to superimposed fluid passage, high-temperature steam raises the temperature of superimposed fluid passage rapidly, the temperature of die cavity or core also raises rapidly, make the die cavity wall temperature promptly be elevated to melt temperature near institute's injection molding material, at this moment, the beginning injection moulding, the stream of plastic of HTHP liquid state is injected the high temperature die cavity, the die cavity wall of high temperature makes the not loss of materials flow temperature, thereby keep its good flowability, low viscosity (laminarity) and amalgamation, good amalgamation makes materials flow can not form " fusing trace " at the place of closing up, and good flowability and low viscosity (laminarity) make can not form surface " ripple " on materials flow and the die cavity wall contact-making surface, can not form surface " floating fine " to adding fine goods;
Injection moulding finishes, injection machine enters the pressurize cooling program, at this moment, steam off, open compressed air, compressed air source passes to compressed air by interface to superimposed fluid passage, steam in the superimposed fluid passage is blown out, the closes compression air, open cooling water, high pressure constant temperature cooling water source passes to high pressure constant temperature cooling water by interface to superimposed fluid passage, and cooling water reduces the temperature of superimposed fluid passage rapidly, and reduces the temperature of die cavity or core rapidly, make die cavity wall each point temperature promptly be reduced to vitrification point point synchronously near institute's injection molding material, the plastics of high-temperature liquid state are able to synchronously cooled and solidified rapidly in the die cavity, solidify to form duricrust rapidly with the cold plastic member product surface that makes of leg speed, and its laminboard layer still is in semi-molten state, help the pressurize dead chick, thereby its heavy wall can not form " it is flat to contract " after the cooling of muscle place is arranged, and the part of goods also can not form cooling " stress accumulation " phenomenon;
Cooling finishes, and injection machine enters die sinking, demoulding program, at this moment, close cooling water, open compressed air, compressed air source passes to compressed air by interface to superimposed fluid passage, water in the superimposed fluid passage is blown out, for the logical Steam Heating of next mould is prepared.
The injection mold that the present invention takes the technical scheme of above-mentioned superimposed fluid passage that can be controlled to make, the plastic member product any surface finish such as the mirror of institute's injection mo(u)lding, do not have " fusing trace ", " ripple ", " it is flat to contract ", " floating fine ", " fineness " presentation quality is bad, check through timeliness, " stress accumulation " consequence phenomenon of not having distortion or autoclasis, reached that thorough elimination plastic member product " fuses trace ", " ripple ", " it is flat to contract ", " floating fine ", " fineness " presentation quality be bad, and the bad purpose of " stress accumulation " inherent quality; Simultaneously, also exempted " spraying paint " operation, and the cost that is brought by " spraying paint " operation, scrappage, environmental protection " three wastes ", benzene are to a series of accessory problems such as enterprise employee health harm for the plastic member product that surface quality is had relatively high expectations.
Description of drawings
Fig. 1 is the principle schematic of the injection mold structure of highlight non-trace plastic member product of the present invention;
Fig. 2 is a kind of injection mold actual configuration schematic diagram that adopts the injection mold structure of highlight non-trace plastic member product of the present invention.
Below in conjunction with the embodiment in the accompanying drawing the present invention is described in further detail, but should not be construed as any limitation of the invention.
Among the figure: die cavity 1, core 2, composite laminate 3, superimposed fluid passage 31, sealed groove 32, cover half 4, dynamic model 5, die joint 6, plastic member product 7, cast gate 01, draw material push rod 02, plastic thimble 03, hydraulic ejection oil cylinder 04.
The specific embodiment
Consult Fig. 1, Fig. 2, the injection mold structure of a kind of highlight non-trace plastic member product of the present invention comprises die cavity 1, core 2, composite laminate 3, superimposed fluid passage 31, wherein: described die cavity 1 is for being fixed on the mold insert on cover half 4 or dynamic model 5 die joints 6, its upper surface is provided with plastic member product 7 model concave surfaces, the lower surface is provided with and the approximate equidistant wall thickness convex surface in upper surface, be provided with many uniform, crooked semi-circular recesses along convex surface, the plane at convex surface edge is provided with the closed seal bead of head and the tail; Described core 2 is for being fixed on the mold insert on cover half 4 or dynamic model 5 die joints, its upper surface is provided with plastic member product 7 model convex surfaces, the lower surface is provided with and the approximate equidistant wall thickness concave surface in upper surface, along concave surface be provided with many uniform, crooked semi-circular recesses, the plane of concave edge are provided with the closed seal bead of head and the tail; Described composite laminate 3 is for fixedly being sandwiched in the member between die cavity 1 or core 2 and cover half 4 or the dynamic model 5, its upper surface is provided with it the shape face that the lower surface of the die cavity 1 of contact or core 2 matches, be provided with corresponding with the semi-circular recesses of die cavity 1 or core 2 along the shape face, many uniform, crooked semi-circular recesses, the plane at shape face edge is provided with corresponding with the seal bead of die cavity or core, the sealed groove 32 that head and the tail are closed, groove is embedded with the sealing strip of high temperature high voltage resistant, and its lower surface is the plane; Described superimposed fluid passage 31 is for being superimposed together with described composite laminate 3 by described die cavity 1 or core 2, by the be put together fluid passage of full circle of the semi-circular recesses of mutual correspondence, by sealing strip, the superimposed compression seal of seal bead in the sealed groove 32 of mutual correspondence, the groove, and by interface and mould exterior.
Operation principle and program:
The injection mold of the injection mold structure of highlight non-trace plastic member product of the present invention needs to be aided with the cooperation of high temperature and high pressure steam source, high pressure constant temperature cooling water source, compressed air source at work; During work, the mould matched moulds, the high temperature and high pressure steam source passes to high temperature and high pressure steam by interface to superimposed fluid passage 31, high-temperature steam raises the temperature of superimposed fluid passage 31 rapidly, the temperature of die cavity 1 or core 2 also raises rapidly, make the die cavity wall temperature promptly be elevated to melt temperature near institute's injection molding material, at this moment, the beginning injection moulding, the stream of plastic of HTHP liquid state is injected the high temperature die cavity, the die cavity wall of high temperature makes the not loss of materials flow temperature, thereby keep its good flowability, low viscosity (laminarity) and amalgamation, good amalgamation makes materials flow can not form " fusing trace " at the place of closing up, and good flowability and low viscosity (laminarity) make can not form surface " ripple " on materials flow and the die cavity wall contact-making surface, can not form surface " floating fine " to adding fine goods;
Injection moulding finishes, injection machine enters the pressurize cooling program, at this moment, steam off, open compressed air, compressed air source passes to compressed air by interface to superimposed fluid passage 31, steam in the superimposed fluid passage 31 is blown out, the closes compression air, open cooling water, high pressure constant temperature cooling water source passes to high pressure constant temperature cooling water by interface to superimposed fluid passage 31, and cooling water reduces the temperature of superimposed fluid passage 31 rapidly, and reduces the temperature of die cavity 1 or core 2 rapidly, make die cavity wall each point temperature promptly be reduced to vitrification point point synchronously near institute's injection molding material, the plastics of high-temperature liquid state are able to synchronously cooled and solidified rapidly in the die cavity, solidify to form duricrust rapidly with the cold plastic member product surface that makes of leg speed, and its laminboard layer still is in semi-molten state, help the pressurize dead chick, thereby its heavy wall can not form " it is flat to contract " after the cooling of muscle place is arranged, and the part of goods also can not form cooling " stress accumulation " phenomenon;
Cooling finishes, and injection machine enters die sinking, demoulding program, at this moment, close cooling water, open compressed air, compressed air source passes to compressed air by interface to superimposed fluid passage 31, water in the superimposed fluid passage 31 is blown out, for the logical Steam Heating of next mould is prepared.
Fig. 2 is a kind of injection mold actual configuration schematic diagram that adopts the injection mold structure of highlight non-trace plastic member product of the present invention, and the core 2 of this mould and hydraulic ejection mechanism are arranged on cover half 4 sides, and die cavity 1 is arranged on dynamic model 5 sides.
Claims (2)
1, the injection mold structure of highlight non-trace plastic member product comprises die cavity (1), core (2), composite laminate (3), superimposed fluid passage (31), it is characterized in that: described die cavity (1) is for being fixed on the mold insert on cover half (4) or dynamic model (5) die joint (6), its upper surface is provided with plastic member product (7) model concave surface, the lower surface is provided with and the approximate equidistant wall thickness convex surface in upper surface, along convex surface be provided with many uniform, crooked semi-circular recesses, the plane at convex surface edge are provided with the closed seal bead of head and the tail; Described core (2) is for being fixed on the mold insert on cover half (4) or dynamic model (5) die joint, its upper surface is provided with plastic member product (7) model convex surface, the lower surface is provided with and the approximate equidistant wall thickness concave surface in upper surface, along concave surface be provided with many uniform, crooked semi-circular recesses, the plane of concave edge are provided with the closed seal bead of head and the tail; Described composite laminate (3) is for fixedly being sandwiched in the member between die cavity (1) or core (2) and cover half (4) or the dynamic model (5), its upper surface is provided with it the shape face that the lower surface of the die cavity (1) of contact or core (2) matches, be provided with corresponding with the semi-circular recesses of die cavity (1) or core (2) along the shape face, many uniform, crooked semi-circular recesses, the plane at shape face edge is provided with corresponding with the seal bead of die cavity or core, the sealed groove (32) that head and the tail are closed, groove is embedded with the sealing strip of high temperature high voltage resistant, and its lower surface is the plane.
2, the injection mold structure of highlight non-trace plastic member product according to claim 1, it is characterized in that: described superimposed fluid passage (31) is for being superimposed together with described composite laminate (3) by described die cavity (1) or core (2), by the be put together fluid passage of full circle of the semi-circular recesses of mutual correspondence, by the interior sealing strip of sealed groove (32), groove, the superimposed compression seal of seal bead of mutual correspondence, and by interface and mould exterior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102133981A CN101342779A (en) | 2008-08-28 | 2008-08-28 | Injection mold structure of highlight non-trace plastic member product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102133981A CN101342779A (en) | 2008-08-28 | 2008-08-28 | Injection mold structure of highlight non-trace plastic member product |
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| CN101342779A true CN101342779A (en) | 2009-01-14 |
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| CNA2008102133981A Pending CN101342779A (en) | 2008-08-28 | 2008-08-28 | Injection mold structure of highlight non-trace plastic member product |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549547B (en) * | 2009-05-12 | 2012-08-22 | 张国伟 | Simple general electrothermal high-light no-trace injection-die temperature controller |
| CN101531052B (en) * | 2009-04-19 | 2012-08-22 | 张国伟 | An energy-saving type highlight non-trace injection mold temperature control system |
| CN103112137A (en) * | 2013-02-28 | 2013-05-22 | 山东大学 | Electrical heating rapid heat cycle injection mold |
| CN104526920A (en) * | 2014-12-26 | 2015-04-22 | 苏州安特实业有限公司 | Mounting block |
| CN110406035A (en) * | 2019-08-28 | 2019-11-05 | 华域视觉科技(上海)有限公司 | Automobile headlamp lampshade and injection mold |
| CN111823502A (en) * | 2020-07-01 | 2020-10-27 | 宁波贝隆精密模塑有限公司 | Injection mold for producing high-pixel mobile phone lens barrel |
-
2008
- 2008-08-28 CN CNA2008102133981A patent/CN101342779A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531052B (en) * | 2009-04-19 | 2012-08-22 | 张国伟 | An energy-saving type highlight non-trace injection mold temperature control system |
| CN101549547B (en) * | 2009-05-12 | 2012-08-22 | 张国伟 | Simple general electrothermal high-light no-trace injection-die temperature controller |
| CN103112137A (en) * | 2013-02-28 | 2013-05-22 | 山东大学 | Electrical heating rapid heat cycle injection mold |
| CN103112137B (en) * | 2013-02-28 | 2015-09-16 | 山东大学 | A kind of electrical heating rapid thermal circulation injection mould |
| CN104526920A (en) * | 2014-12-26 | 2015-04-22 | 苏州安特实业有限公司 | Mounting block |
| CN110406035A (en) * | 2019-08-28 | 2019-11-05 | 华域视觉科技(上海)有限公司 | Automobile headlamp lampshade and injection mold |
| CN111823502A (en) * | 2020-07-01 | 2020-10-27 | 宁波贝隆精密模塑有限公司 | Injection mold for producing high-pixel mobile phone lens barrel |
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Open date: 20090114 |