CN1011211B

CN1011211B - Built-up plastics mould

Info

Publication number: CN1011211B
Application number: CN 87101251
Authority: CN
Inventors: 张爱民; 王培中; 郑大君
Original assignee: CHENGDE CITY ELECTRONIC INSTRUMENT FACTORY
Current assignee: CHENGDE CITY ELECTRONIC INSTRUMENT FACTORY
Priority date: 1987-12-26
Filing date: 1987-12-26
Publication date: 1991-01-16
Also published as: CN1033767A

Abstract

The present invention relates to a built-up plastic mould which is used for compression moluding, extrusion moulding, injection, blow moulding and low foam moulding. The present invention comprises a concave mould with a deformable cavity and male mould with a deformable core, wherein the concave mould is composed of a concave mould base plate, a concave mould subassembly and a concave mould combined clamping plate, and the male mould is composed of a male mould combined base plate, a male mould subassembly, a male mould combined clamping plate, a mould cavity blocking subassembly and a side blocking combined plate. Series of plastic moulding parts of different shapes and dimensions are processed by the coordination variation of the concave mould, the male mould and an auxiliary forming system of the mould. The mould has the advantages of multiformity of one mould, low cost, easy manufacture, flexible usage, multiform change, etc.

Description

Built-up plastics mould

The invention belongs to die for injection molding.

Mould of plastics generally adopts the fixed mould structure of " mould one shape " at present, and a mold only has a kind of shaped state, is only limited to the production of mould setting product.Because mould of plastics die sinking expense height, cycle are long, this mould is applicable to production in enormous quantities.In recent years the standard die set of Shi Yonging is prepared special-purpose die cavity and is utilized die-manufacturing methods such as various low-melting alloys and resin-cast short-term training, though in the standardization, the generalization degree that improve mould, reduce aspects such as mould cost and shortening process-cycle and obtained certain effect, but still do not break away from the traditional moulds structure of " mould one shape ", in small lot batch manufacture, the mould cost is still very high.For ease of processing, save material, though some mould of plastics has also adopted protruding, the die structure of combination, as shown in Figure 1, this kind structure does not address the above problem yet.

The objective of the invention is to design a kind of injection moulding built-up plastics mould, it has combination variable die and punch, one secondary mould can be processed multiple serial plastic, realized " a mould multiform ", thereby reduction die cost, shorten the process-cycle, be particularly suitable for the processing dimension difference and the similar serial plastic of shape.

Injection moulding built-up plastics mould of the present invention mainly comprises by die block, be installed in the die assembled substrate on the die block, be fixed on the die assembly on the die assembled substrate, clamp the die combination clamp of die assembly and place the die assembly and die combination clamp between the die formed of liner with variable impression, by punch retainer, be fixed on the punch assembled substrate on the punch retainer, be fixed on the punch assemblies on the punch assembled substrate, clamp the punch combination clamp of punch assemblies, be contained in that die cavity on the punch assemblies blocks assembly and the side that is contained in the groove of punch set plywood is cut the punch with variable core that compoboard is formed, by guide pillar, the backhaul shift fork, the demoulding backhaul mechanism that ejector beam is formed is by locating ring, being contained in shunting disk on the die assembled substrate is contained in the flow distribution plate in the shunting disk runner and fills the running gate system that plunger that die assembled substrate installing hole uses is formed.The injection moulding built-up plastics mould is protruding, die and corresponding demoulding backhaul mechanism, the coordination of running gate system change, and can process the serial plastic of difformity, different size.

Below in conjunction with embodiment the injection moulding built-up plastics mould is elaborated.

Present embodiment is a kind of combined type injection of plastic mould that the electronics desktop chassis is used of processing.

Fig. 2 is an electronics desktop chassis structure chart.

Fig. 3,4 is processing electronics desktop chassis cover plate sectional die structure chart.

Fig. 5 blocks assembly assumption diagram for die cavity.

Fig. 6 is protruding for mould, the die composite card hardens composition.

Fig. 7,8 is processing electronics desktop chassis handle sectional die structure chart.

Fig. 9-12 is the punch assemblies installation diagram.

Figure 13-16 is the shunting disk structure chart.

Figure 17 switches the cast gate schematic diagram for shunting disk.

Figure 18,19 is the punch assemblies installation diagram.

Electronics desktop chassis shown in Figure 2 is made up of cover plate 1, vibration damping pin 2, handle 3 and mounting screw.

The electronics of processing shown in Fig. 3,4 desktop chassis cover plate combined type injection of plastic mould, it is an elementary cell of determining die assembly according to the modulus relation of desktop chassis basic size series.This mould comprises by die block 4; be fixed on the die assembled substrate 5 on the fixed head 4; be fixed by bolts to the die assembly 6 on the substrate 5; die adjusting screw(rod) 7; die combination clamp 16; set bolt 14; die fixing chuck plate 23 and place die assembly 6 and die combination clamp 16 between liner 41(as shown in Figure 6) the die formed with variable impression; by punch positioning sleeve 20; punch leg 11; punch retainer 12; be fixed on the punch assemblies 15 on the punch assembled substrate 10; punch adjusting screw(rod) 9; the die cavity that is contained on the punch assemblies 15 blocks assembly 34; the interior side of groove that is contained in punch combination clamp 17 is cut the punch with variable core of compoboard 8 and punch fixing chuck plate 24 compositions; by locating ring 31; shunting infill panel 33; flow distribution plate guide pillar 30; flow distribution plate 21; the running gate system that runner heated probe 22 and shunting disk 13 and plunger are formed; by injector knock-pin 32, stripper 19; the mould emptier that stripper guide pillar 38 and ejector beam 18 formed and by guide pillar 25; backhaul guide pillar 26; backhaul shift fork 27; the public direction backhaul mechanism that guide-localization post 29 is formed.

In this mould, the outer surface of die assembly 6 forming machine cover plates, assembly 6 is fixed by bolts on the die assembled substrate 5.Provided two kinds of cover plate outer surface shaped structures among Fig. 3, the left side is for there being seam cover plate shaped structure, and it is the outer surface that fits in the female cap plate by die assembly 6 and die combination clamp 16; Seam cover plate shaped structure is represented not have in the right side, and it is the outer surface by overall concave membrane module 6 shaping cover plates.The inner surface of punch assemblies 15 shaping cover plates, the middle bolt 36 with holes of punch assemblies 15 usefulness is fixed on the punch assembled substrate 10, and ejector beam 18 passes the centre bore of bolt 36.Punch assemblies 15 with the combination of varying number, realizes the variation of punch core on width, the variation of concave die cavity is finished by moving combination clamp 16; Mould is protruding, the synchronous variation of die makes it can process the cover plate of a series of different in width; The variation of cover plate length is blocked assembly 34 by die cavity and is finished, and as shown in Figure 5, this assembly is made up of with the red copper module 42 that is pressed on the elastomer block rubber in the groove that is installed in punch assemblies 15 or nylon elastomer block 41.The conversion die cavity blocks the installation site of assembly 34, can change the length of cover plate.Because die cavity blocks assembly 34 and has adopted the red copper module to add the elastomer block structure, so it can block die cavity effectively and can not damage the die surface.The change of cover plate height cuts compoboard 8 by side and realizes, as shown in Figure 6, side is cut compoboard 8 and is installed between punch combination clamp 17 and the punch assemblies 15, the tooth that side is cut on the compoboard 8 cooperates with the groove that punch makes up on the clamp 17, the variation of compoboard 8 and clamp 17 rigging positions can realize the variation of cover plate height.

From Fig. 3,6, it can also be seen that, punch assembled substrate 10 is oblique toothed surface with the mating surface of punch combination clamp 17, when bolted power and mold work under the clamp force effect, tiltedly toothed surface produces a very big clamping force, the punch that clamping is combined by polylith punch assemblies 15, the gap of eliminating assembly.

The mould emptier of mould promotes stripper 19 by injector knock-pin 32 and demoulding action is finished in ejector beam 18 motions.Resetting of this mechanism is to drive backhaul guide pillar 26 and shift fork 27 motions when utilizing guide pillar 25 to coincide, and promotes strippers 19 and ejector beam 18 resets, said mechanism can satisfy multiple serial plastic the backhaul and the demoulding by shift fork 27.

In Fig. 6, the main effect of liner 41 is to prevent that die combination clamp 16 from damaging the die face of die assembly 6, and the fit clearance that guarantees combination clamp 16 and die assembly 6 is in shapeless value scope.

The electronics desktop chassis of processing shown in Fig. 7,8 handle sectional die, it is that combination clamp by mould shown in replacing Fig. 3,4 is that side pumping mode plate 42 is finished.The shaping of handle is to finish by the combination with another forming face of same set of assembly.Side is taken out guide pillar 43 and is installed in side and takes out in the datum plate 44, and when the handle change in size, the position of side picking device is respective change thereupon also, so can finish the action of loosing core that different size is shaken hands with a secondary side picking device.

Punch assemblies 15 is generally hexahedron, and it has three forming faces and three installed surfaces at most, the installation site of 15 two forming faces of punch assemblies shown in Fig. 9-12.Can process several difform serial plastics with same set of assembly, a mold can be installed many grip assemblies, realizes the production of multiple series of products.

Figure 13-16 is depicted as the shunting disk with different runners.According to the difference of serial plastic shaping area size and shaping position, running gate system can be selected different shunting disks.The quantity of each shunting disk runner, direction, length are again variable, and shown in Fig. 3,17, shunting disk 13 is contained on the die assembled substrate 5, and with bolt die assembled substrate 5, shunting disk 13 and die assembly 6 are fixed as one.The length of runner is by the position of mounting hole decision of selecting for use in the length of flow distribution plate 33 and the runner, and the installing hole 46 usefulness plungers that are positioned on the die assembled substrate 5 of runner are filled.

Punch assemblies shown in Figure 18,19 is used to process big height series plastic.Under the injection pressure effect, the inclined-plane by on the combination bar 47 clamps punch assemblies, eliminates combinational gap.In addition, be provided with cooling water channel in the combination bar 47, combined heave die can be cooled off preferably.

This injection moulding built-up plastics mould can be processed other upright body series chassis (or housing), as serial plastics such as tv shell, Turnover Box, pallets.

Equally, this combining structure is applicable to compression tool, can constitute the combined type compression molding mould of plastics with variable protruding, die.

One cover built-up plastics mould can be processed the serial plastic of difformity, different size.Therefore built-up plastics mould has one module multiple usages, low, the easy processing of cost, advantage such as flexible and convenient to use.

Claims

1, a kind of injection moulding built-up plastics mould is characterized in that this mould comprises:

1) by die block, be installed in die assembled substrate on the die block, be fixed on die assembly on the die assembled substrate, clamp the die combination clamp of die assembly and place the die assembly and die combination clamp between the die formed of liner;

2) by punch retainer, be fixed on punch assembled substrate on the punch retainer, be fixed on punch assemblies on the punch assembled substrate, place combination bar in the punch assemblies, clamp punch assemblies punch combination clamp, be contained in that die cavity on the punch assemblies blocks assembly and the side that is contained in the groove of punch set plywood is cut the punch that compoboard is formed;

3) by guide pillar, backhaul guide pillar, the public demoulding backhaul mechanism that is contained in backhaul shift fork, die pad on the backhaul guide pillar, places that ejector beam on the die pad and die pad guide pillar form;

4) by locating ring, be contained in shunting disk on the die assembled substrate, be contained in the flow distribution plate in the shunting disk runner and fill injection, the extrusion molding built-up plastics mould running gate system that plunger that die assembled substrate installing hole uses is formed.

2, injection moulding built-up plastics mould as claimed in claim 1 is characterized in that the mating surface of punch assembled substrate and punch combination clamp is oblique toothed surface.

3, injection moulding built-up plastics mould as claimed in claim 1 is characterized in that punch assemblies is a hexahedron, and it has three forming faces and three installed surfaces at most.

4, injection moulding built-up plastics mould as claimed in claim 1 is characterized in that being provided with cooling water channel placing on the combination bar of punch assemblies.

5, injection moulding built-up plastics mould as claimed in claim 1 is characterized in that side cuts a side of compoboard and be provided with the tooth that cooperates with groove on the punch combination clamp.

6, injection moulding built-up plastics mould as claimed in claim 1 is characterized in that die cavity blocks assembly and is made up of the red copper module that is installed in the elastomer block in the punch assemblies groove and be pressed on the elastomer block.