CN2136124Y

CN2136124Y - Mould for injection moulding machine

Info

Publication number: CN2136124Y
Application number: CN 92230914
Authority: CN
Inventors: 张秋雀
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-18
Filing date: 1992-08-18
Publication date: 1993-06-16
Anticipated expiration: 2002-08-18

Abstract

The utility model relates to a mould for injection moulding machine for foaming shoes or parts thereof. The utility model is formed by that a plurality of upper and lower moulds joint and are arranged on the circumference of a rotation disc in an equal interval ring; the through air filling holes of the upper moulds joint the air guiding ducts of the lower moulds; one ends of guide pipes are butted with the air filling holes and connect with control valves, and the other ends are communicated with external high pressure air. When the upper and lower moulds close, the mould space is in a hermetic form; the high pressure air is injected to cause injected thermokarst PVC raw material to fill the mould space of the upper and lower moulds to foam; the outer layer is cooled immediately to form a bright cladding; the inside under the wind pressure generated by the high pressure air inhibits foaming and expansion to make the outer layer of a PVC foaming shoe or part thereof bright and the structure of a PVC foaming shoe or part thereof fine.

Description

Mould for injection moulding machine

The utility model relates to a kind of foamed shoe sole injection (mo(u)lding) machine, particularly relates to a kind of mould of injection (mo(u)lding) machine.

Foamed shoe sole injection (mo(u)lding) machine in the past, its support body are across on the rotating disc of board and are fixed on the board, and nozzle is communicated with material storage tube with conveying pipeline and is fixedly arranged on the support body, is used to carry heat to melt the state foaming raw material, and nozzle corresponding rotation dish peripheral position down; A plurality of modules are equidistantly arranged and are located at the rotating disc periphery, please cooperate consult shown in Figure 1, module is involutory upper and lower mould (11), (12) and can opens, close, rotating disc rotates suitable angle, upper and lower mould (11), (12) mold closing and involutory nozzle (13) are shot material, make foaming raw material be fed into pattern space (14), foaming raw material is foaming in module group type modular space (14), upper and lower mould (11), (12) is opened can take out foamed shoe sole.

Expanded material generally all is to adopt the cheap PVC(polyvinyl chloride of Jie's lattice at present) raw material, must there be the PVC raw material of q.s to inject the pattern position of mould, expanded material is flowed fill up whole pattern space (14), and make all foamings (15) together of expanded material, and for making the whole PVC raw material can foaming, mould mostly remains on more than the room temperature, being limited to each position state during foaming differs, as interior, the outside difference that is stressed, expanded material is differed by module cooling reduction temperature, the expanded size of foaming and expansion rate are all different, are covered with foam not of uniform size (16) so cause; PVC raw material skin is in abutting connection with pattern position foaming, cause PVC raw material extruding incident, discharge gate moulding during foaming and intumescing, cause the generation of burr, relief hole, make the foamed shoe sole surface produce the fried dough twist shape, and the surface is connected with shoot material mouth and discharge gate, causes discharge gate that the defective of burr, waste material and round dot projection is arranged.

Main purpose of the present utility model provides a kind of mould of injection (mo(u)lding) machine, on, make aeration hole and air guide channel involutory after the mould of counterdie pass, guiding pipeline butt joint aeration hole and just with control valve, external pressure-air is controlled in reverse unlatching or switching, it is fed into, the model space of counterdie mold closing, making the heat of injecting melt the PVC raw material pushed by pressure-air and is full of the model space to foam, outer instantaneous cooling, it is outer to form light so do not foam, the blast that inside is produced by pressure-air suppresses foaming, expand, it is outer and organize very even to make the PVC foamed shoe sole have a light, and the advantage that density is careful.

Another purpose of the present utility model provides a kind of mould of injection (mo(u)lding) machine, perfusion pressure-air in the model space, to push around PVC raw material that heat melts state is covered with, smooth outer layer is a foaming PVC raw material not, do not have foaming, expand be squeezed in penetrate, the burr of discharge gate, relief hole, improve the quality of product.

The mould of a kind of injection (mo(u)lding) machine of the present utility model, be a plurality of modules that equidistant arrangement is set on the rotating disc of board, be across support body on the rotating disc and be fixed in board, again nozzle is installed on the support body, make its module of corresponding rotation dish periphery down; The counterdie of module is fixed in rotating disc, an end of a patrix and end of counterdie is articulated and can be involutory and do to close the action of mould, mold closing; Counterdie is at pattern arranged outside air guide channel, and the arm of air guide channel is communicated with pattern, and patrix is the aeration hole of running through in the pattern arranged outside, the air guide channel that runs through the involutory counterdie in aeration hole of patrix; Patrix is connected with oral siphon, and the external cooling water of oral siphon connection flows into model inside and flowed out by outlet pipe after environment, make upper and lower mould can obtain appropriateness and cool off, and control makes the pattern surface temperature of patrix be reduced to about 15 to 20 degree Celsius.

The high pressure gas filling mean is the aeration hole other end with the end butt joint patrix of guiding pipeline, and be connected with control valve, make it be communicated with external pressure-air, control valve is changeable for just, reverse unlatching or close, and can pour on pressure-air goes into, in the model space during counterdie mold closing, making nozzle inject heat melts the PVC raw material and is full of model space foaming, outer PVC raw material directly contacts pattern and instantaneous temperature reduction, make rapid reduction of PVC material temperature have little time foaming and not have pore, form smooth outer layer, PVC raw material in the smooth outer layer is subjected to pressure-air and suppresses foaming when foaming, expand, make the foaming of PVC raw material produce uniform density, so it is very even that its foaming of sole product is organized, and density is careful, PVC raw material foaming in smooth outer layer, do not have the foaming of PVC raw material, expand and push incident, discharge gate and be formed with the finished product of burr and relief hole, it is outer and organize very even to make the PVC foamed shoe sole have a light, and the advantage that density is careful.

Be elaborated below by most preferred embodiment and accompanying drawing mould to the utility model injection (mo(u)lding) machine, in the accompanying drawing:

Fig. 1 is the schematic diagram that existing mold is made foamed shoe sole.

Fig. 2 is the schematic top view of the utility model most preferred embodiment.

Fig. 3 is the part assembled sectional view of the utility model most preferred embodiment.

Fig. 4 is the schematic diagram of the utility model most preferred embodiment mould.

Fig. 5 is the assembled sectional view of the utility model most preferred embodiment mould.

Fig. 6 is a schematic diagram of the PVC raw material being injected foaming in the mould with the utility model most preferred embodiment.

Fig. 7 is with the phantom of the utility model most preferred embodiment with PVC raw material foaming in mould.

The mould of a kind of injection (mo(u)lding) machine of the present utility model, shown in Fig. 2,3, it mainly is made up of board (20), module (30), high pressure gas filling mean (40), cooling device (50).

The upside of board (20) sets up the rotating disc (21) that can freely rotate, there is a support body (22) to be across rotating disc (21) top and is fixed in board (20), material storage tube (23) is fixedly arranged on the support body (22), be used to store the PVC raw material and make its heating be heat and melt state, nozzle (24) is communicated with material storage tube (23) with conveying pipeline and carries heat to melt the state raw material, nozzle (24) is fixed on the support body (22), makes it down corresponding to rotating disc (21) peripheral position.

Please cooperate and consult Fig. 2, shown in 4, module (30) is equidistant arrangement and is installed in rotating disc (21) peripheral position, module (30) can be risen by dynamic action, module (30) is to be directly fixed on rotating disc (21) with counterdie (31), the end face of counterdie (31) digs and is provided with accommodation space (311) and embeds fixing for pattern (312), counterdie (31) side is located in two steam vents (313) corresponding accommodation space (311) two ends and compartment of terrain, and steam vent (313) stretches into and be communicated with the accommodation space (311) and the chimeric adjoining position of pattern (312) of counterdie (31) inside; Two lock screws (314) cooperate the thread in the steam vent (313) respectively, and lock screw (314) is blocked steam vent (313); The other end of the distolateral affixed counterdie of hinge (32) (31) also connects patrix (33), and patrix (33) can be loose-leaf deflection so that die sinking, mold closing, the type horizontal stroke (312) of the corresponding counterdie of patrix (33) (31) and be provided with pattern (321).Please cooperate consult shown in Figure 5, the pattern (312) of upper and lower mould (33), (31), (321) position are combined to form the model space (34) of sole shape, feeding mouth (35) runs through patrix (33) in pattern (321) appropriate position, when patrix (33) when rotating to the fixed position, feeding mouth (35) nozzle (24) that aligns just.

High pressure gas filling mean (40) is positioned at the inner face of counterdie (31) in abutting connection with patrix (33), and at pattern (312) one end arranged outside air guide channels (41), air guide channel (41) is semilune and extends and be that the concave arc groove of appropriate depth, many arms (42) are extended by air guide channel (41) and be communicated to accommodation space (311); Patrix (33) and involutory air guide channel (41) are run through in aeration hole (43), one end of guiding pipeline (44) is communicated with external pressure-air, guiding pipeline (44) other end is connected with control valve (45), make its front end valve butt joint aeration hole (43), control valve (45) can make air forward, reverse circulation.

The oral siphon (51) of cooling device (50) and outlet pipe (52) are located at the side of patrix (33) with appropriate intervals, oral siphon (51) be communicated with external cooling water flow into patrix (33) inner and around after flow out by outlet pipe (52).

Structural feature of the present utility model and advantage are described below:

During use, utilize rotating disc (21) to turn to desired location, patrix (33) is kicked up and be in the die opening state of loose-leaf deflection, rotating disc (21) rotates and drives module (30) to ad-hoc location simultaneously, patrix (33) descends and is in the mold closing state of loose-leaf deflection, making pattern (312), (321) position of upper and lower mould (33), (31) be combined to form the model space (34) is the physical form of sole, and rotating disc (21) can persist appropriate time and make module (30) be subjected to dynamic action and rise; At this moment utilize oral siphon (51) be communicated with external cooling water flow into patrix (33) inner and around and flow out by outlet pipe (52), make cooling water around effect, and the flow size of control cooling water and temperature height, make upper and lower mould (33), (31) can obtain the appropriateness cooling, model space surface temperature reduces, and control makes pattern (312) surface temperature of patrix (31) be reduced to 15 to 20 degree approximately Celsius.

Please cooperate consult shown in Figure 5, when module (30) rotates to the fixed position in company with rotating disc (21), on, counterdie (33), (31) mold closing, the model space (34) is airtight air tight state, module (30) is subjected to dynamic action and rises, make the valve of aeration hole (43) butt joint control valve (45), this moment control valve (45) change action, its forward is opened and reverse closing, external pressure-air flows into aeration hole (43) by guiding pipeline (44) guiding through control valve (45), pressure-air then flows into air guide channel (41) by aeration hole (43), pressure-air persists in air guide channel (41) that the suitable pressure of tool makes arm (42) guiding pressure-air be filled into accommodation space (311) and keeps certain pressure (10kg/cm so that store sufficient air capacity ²), closed control valve (45) does not return leakage pressure-air.

Please cooperate consult shown in Figure 6, when module (30) is risen by dynamic action, the lucky nozzle (24) that shoots material that aligns of feeding mouth (35), material storage tube (23) stores the PVC raw material and is heated and is heat and melts state, by the nozzle that shoots material (24) through feeding mouth (35) injection model space (34), simultaneously air pressure is pushed the PVC raw material, makes it evenly be covered with pattern (312) in upper and lower mould (33), (31), (321) position and foaming; This moment, PVC raw material skin directly contacted with pattern (312) part of adjacency, and the PVC raw material that makes temperature reduce rapidly has little time foaming and forms non-porous smooth outer layer (60); Treat after the PVC raw material foaming, control valve (45) change action, be reverse unlatching and forward is closed, the pattern (312) of upper and lower mould (33), (31), the air in (321) are emitted along former road, just the sole product of making can be opened and taken out in upper and lower mould (33), (31).

Please cooperate and consult shown in Figure 7ly, the utility model utilizes pressure-air (10kg/cm ²) be poured into model (312), (321) to produce blast, make the foaming of PVC raw material the time be subjected to pressure-air and suppress foaming, expand, make the foaming of PVC raw material produce uniform density, so that the foaming of sole product is organized is very even, and density is careful, can reach high-quality requirement.The utility model is to make heat melt state PVC raw material to inject model (312), (321), and outer moment cooling is not foamed and do not had pore, and produces brightness and form smooth outer layer (60), makes pressure-air (10kg/cm ²) produce blast and be full of model (312), (321) to push the PVC raw material, and in smooth outer layer (60) foaming.Owing to do not have the PVC raw material to be connected,, can improve the quality of product so finished product does not have the generation of burr and relief hole with the mouth that shoots material.

In sum, the mould of injection (mo(u)lding) machine of the present utility model, the air guide channel that runs through the involutory counterdie in aeration hole with patrix, guiding pipeline one end is connected with control valve, and connect with the aeration hole, its other end is communicated with external pressure-air, control valve is changeable just to be, reverse unlatching or close, make, the counterdie mold closing, it is airtight making the model space, perfusion pressure-air and inject heat and melt the PVC raw material and be full of model space foaming, the not foaming and to form light outer of outer instantaneous temperature reduction, the blast that inside is produced by pressure-air suppresses foaming, expand, it is outer and organize very even to make the PVC foamed shoe sole have a light, and the advantage that density is careful.

Claims

1, a kind of mould of injection (mo(u)lding) machine, it is the module that is provided with equidistant arrangement on the rotating disc of board, module comprises and is involutory shape and can opens, on closing, counterdie, on, the pattern position of counterdie is involutory and form the model space, the nozzle that shoots material is injected the PVC raw material, the model space of counterdie, with foaming, it is characterized in that: patrix is provided with the aeration hole of running through, the outside of patrix also is provided with the guiding pipeline, one end of guiding pipeline is connected with control valve, and connects with the aeration hole, and its other end is communicated with external pressure-air, counterdie is provided with air guide channel, one end of air guide channel is connected with the model space, and the involutory aeration of other end hole is when last, when counterdie is closed, air guide channel and aeration hole are interconnected, and guiding pipeline guiding pressure-air is fed into the model space.

2, the mould of injection (mo(u)lding) machine as claimed in claim 1, it is characterized in that: counterdie is provided with accommodation space, and the counterdie side is provided with two steam vents, and steam vent stretches into and is communicated with the bonding station of counterdie accommodation space and pattern.