CN202006564U - Rubber injection molding mold with double-layer structure - Google Patents

Abstract

The utility model belongs to the technical field of rubber and plastic manufacturing, and relates to a rubber injection molding mold with a double-layer structure. The main structure is designed with upper and lower two-layer cavities. The upper cavity is composed of the installed upper die, and the lower cavity is composed of the lower die installed on the middle die and the lower punch installed on the lower die; the upper die, middle die and lower die are positioned and connected by guide posts and stacked in sequence ;The upper mold, the middle mold and the lower mold are three unit assemblies respectively, the upper mold is fixed on the beam of the injection machine, the lower mold is fixed on the movable platform of the injection machine, and the middle mold is located between the upper mold and the lower mold; The number of molded rubber products is double that of ordinary single-layer rubber injection molds. It has high production efficiency, good injection capacity, and energy saving.

Description

A kind of double-deck injection molding of rubber mould

Technical field:

The utility model belongs to rubber and plastic manufacturing technology apparatus field, relates to a kind of injection molding of rubber device, particularly a kind of double-deck injection molding of rubber mould.

Background technology:

Because the viscosity of rubber is big, mobile poor, and is human when processing and manufacturing a product, and adopts die pressing to carry out the processing and forming of rubber for many years always.Along with automobile, industry such as electronics and medical treatment is increasing to the demand of rubber, requirement to the rubber injection quality is also more and more higher, thereby injection moulding grows up rapidly and widely, and begin to be applied in the processing and forming production process of rubber, compare with traditional die pressing, the rubber quality of injection moulding moulding is good, the production efficiency height, but for the highly little rubber of moulding, the opening stroke and the mold thickness of required injector are very little, therefore carrying out rubber with existing common individual layer injection molding of rubber mould adds man-hour, the production capacity of injector can not be not fully exerted, thereby cause the waste on the resource, product cost is greatly improved; End is got up, and existing injection molding of rubber die device adopts the single layer structure feature basically, and ubiquity the structural principle complexity, and preparation technology is difficult for program control, and production capacity is low, the raw material resources waste, and it is few that product goes out rate, shortcomings such as price height.

Summary of the invention:

Goal of the invention of the present utility model is to overcome the shortcoming that prior art exists, seek design a kind of double-deck injection molding of rubber mould is provided, be applied to the injection processing occasion of type rubber less than normal, to enhance productivity, reduce energy waste, reduce product cost.

In order to realize the foregoing invention purpose, the mould structure that the utility model relates to comprise patrix, middle mould, down film, upper strata die cavity, lower floor's die cavity, fovea superior film, sprue, runner, epirelief film, go up the film backing plate, vertically runner, go up film push pedal, spring, down protruding film, down film backing plate, film push pedal down, cold runner device, down thermal insulation board, go up thermal insulation board, recessed film, side plate, bottom knockout bar, go up stripper plate, connecting plate, guide pillar, duct, cooling medium circulation canal, limited block and drag hook; The agent structure design has upper and lower two stratotype chambeies, and the upper strata die cavity is made of the upper cavity die of installing on last punch of installing on the patrix and the middle mould, and lower floor's die cavity is made of the lower punch of installing on lower cavity die of installing on the middle mould and the counterdie; Patrix, middle mould and counterdie link to each other by guide pillar location and guide type and superimposed successively; Patrix, middle mould and counterdie are respectively three unit combination bodies, and patrix comprises punch, upper die plate, patrix push pedal and drag hook, and the patrix push pedal is connected by screw with drag hook; Middle mould comprises cold runner device, last thermal insulation board, upper cavity die, following thermal insulation board, lower cavity die and side plate, the centre of mould during the cold runner device is installed in, the cold runner device is provided with sprue, runner, laterally zygomorphic vertical runner and is used to control the cooling medium circulation canal of sizing material temperature in the runner, makes that sizing material remains on below the curing temperature in the runner; Limited block and connecting plate are installed on the side plate, and connecting plate is connected by screw with last knockout pin; Counterdie comprises lower punch, counterdie backing plate and counterdie push pedal, and the counterdie push pedal is connected by screw with the bottom knockout bar, and upper cavity die and lower cavity die are provided with the duct, and heating is housed in the duct, is used to heat the sizing material in the upper and lower stratotype chamber, makes its sulfidization molding smooth and easy; The upper strata die cavity constitutes by the upper cavity die of installing on the last punch of installing on the patrix and the middle mould is corresponding, and lower floor's die cavity is made of the lower punch of installing on lower cavity die of installing on the middle mould and the counterdie; Patrix is fixed on the injector crossbeam, and counterdie is fixed on the injector moveable platform, and middle mould is between patrix and counterdie.

The heating that the utility model relates to comprises resistance heater, semiconductor heat booster or microwave applicator; Described injector crossbeam is crossbeam or other the corresponding fixed position or the parts of the rubber injection machine of use the utility model mould, and heating and injector crossbeam all are not drawn in the accompanying drawing; The same crossbeam of moveable platform situation of injector.

The rubber quantity of the each moulding of the utility model is the double of common individual layer rubber injection mold, the production efficiency height, and injectability is good, saves the energy; Running gate system is the cold runner running gate system in addition, sizing material in the runner always is controlled at below the curing temperature, after sulfuration finishes, only take out in type rubber, the sizing material in the runner still is retained in the runner with flowable state, and next time is when injecting, directly inject die cavity and be sulfided into rubber, whole forming process does not have and coagulates material and produce, thereby need not be provided with to take off and expect with fixed attention mechanism to have saved raw material.

Description of drawings:

Fig. 1 is a structural principle schematic diagram of the present utility model.

Fig. 2 is that A of the present utility model is to the structural principle schematic diagram.

The specific embodiment:

Also the utility model is described in further detail in conjunction with the accompanying drawings below by embodiment.

Embodiment:

The agent structure of present embodiment comprises patrix 1, middle mould 2, following film 3, upper strata die cavity 4, lower floor's die cavity 5, fovea superior film 6, sprue 7, runner 8, epirelief film 9, last film backing plate 10, vertical runner 11, last film push pedal 12, spring 13, following protruding film 14, following film backing plate 15, following film push pedal 16, cold runner device 17, following thermal insulation board 18, last thermal insulation board 19, recessed film 20, side plate 21, bottom knockout bar 22, last stripper plate 23, connecting plate 24, guide pillar 25, duct 26, cooling medium circulation canal 27, limited block 28 and drag hook 29; Patrix 1, middle mould 2 and counterdie 3 are respectively three unit combination bodies, and patrix 1 comprises punch 9, upper die plate 10, patrix push pedal 12 and drag hook 29, and patrix push pedal 12 and drag hook 29 are connected by screw; Middle mould 2 comprises cold runner device 17, last thermal insulation board 19, upper cavity die 6, following thermal insulation board 18, lower cavity die 20 and side plate 21, the centre of mould 2 during cold runner device 17 is installed in, cold runner device 17 is provided with the vertical runner 11 of sprue 7, runner 8 and upper and lower symmetry, cold runner device 17 also is provided with cooling medium circulation canal 27, be used to control sizing material temperature in the runner, make that sizing material remains on below the curing temperature in the runner, limited block 28 and connecting plate 24 are installed on the side plate 21, and connecting plate 24 and last knockout pin 23 are connected by screw; Counterdie 3 comprises lower punch 14, counterdie backing plate 15 and counterdie push pedal 16, counterdie push pedal 16 and bottom knockout bar 22 are connected by screw, upper cavity die 6 and lower cavity die 20 are provided with duct 26, heating (unreceipted label in the accompanying drawing) is equipped with for 26 li in the duct, be used to heat the sizing material in the upper and lower stratotype chamber, make its sulfidization molding smooth and easy; Upper strata die cavity 4 constitutes by the upper cavity die installed on the last punch of installing on the patrix 19 and the middle mould 26 is corresponding, and lower floor's die cavity 5 is made of the lower punch 14 of installation on lower cavity die of installing on the middle mould 2 20 and the counterdie 3; Patrix 1, middle mould 2 and counterdie 3 are superimposed as the integral type die device after linking to each other by guide pillar 25 location and guide type successively, and patrix 1 is fixed on the injector crossbeam, and counterdie 2 is fixed on the injector moveable platform, and middle mould 2 is between patrix 1 and counterdie 3; Injector crossbeam and moveable platform all refer to implement the utility model and inject intrinsic position and parts on the injector of using, and do not belong to the architectural feature of present embodiment.

When present embodiment uses injection moulding, earlier with patrix 1, in mould 2 and counterdie 3 guiding and the location formula structure that is overlapped into one by guide pillar 23, sizing material is by sprue 7, runner 8 and last, the vertical runner 11 of following symmetry injects upper strata die cavity 4 and lower floor's die cavity 5 simultaneously, during die sinking, patrix 1, middle mould 2 and counterdie 3 space out, under the restriction of last knockout pin 23, middle mould 2 is suspended between patrix 1 and the middle mould 2, die sinking is in proper order: the injector moveable platform drives counterdie 3 and moves down, under spring 13 and the effect of mould gravity, middle mould 2 moves down with counterdie 3, the die joint A-A of upper strata die cavity 4 earlier separately, the cast gate of upper strata die cavity 4 disconnects, the rubber of upper strata die cavity 4 moulding breaks away from upper cavity die 6, when moving to certain position, the drag hook of installing in the limited block 28 pulling patrix push pedals 12 of middle mould 2 29, thereby pulling patrix push pedal 12, the rubber of upper strata die cavity 4 moulding is deviate from patrix push pedal 12, when the last knockout pin 23 of injector is limited, coupled middle mould 2 stops to move, the die joint B-B of lower floor's die cavity 5 separately, the cast gate of lower floor's die cavity 5 disconnects, the rubber of lower floor's die cavity 5 moulding breaks away from lower cavity die 20, counterdie 3 continues to move down, when the bottom knockout bar 22 of injector was limited, coupled counterdie push pedal 16 stopped to move, and the rubber of lower floor's die cavity 5 is deviate from.

The enforcement structure of present embodiment shows, when using this mould to prepare the rubber of ting model size, on same injector, compare in the common die of existing single layer structure, present embodiment has and uses sensitivity good, be applicable to various injection machineries, handling safety is reliable, saves raw material and cuts down the consumption of energy, product goes out the rate height, quality is good, and especially for the injection processing of the rubber of symmetrical structure, its production efficiency and quality greatly improve.

Claims (1)

1. A rubber injection molding mold with a double-layer structure, comprising an upper mold, a middle mold, a lower film, an upper cavity, a lower cavity, an upper concave film, a main flow channel, a runner, an upper convex film, an upper film backing plate, Vertical channel, upper film push plate, spring, lower convex film, lower film backing plate, lower film push plate, cold runner device, lower heat shield, upper heat shield, lower concave film, side plate, lower release Die bar, upper stripping plate, connecting plate, guide post, hole, cooling medium circulation channel, limit block and pull hook, it is characterized in that the main structure is designed with upper and lower two-layer cavity, and the upper cavity is installed on the upper mold The upper punch is composed of the upper die installed on the middle die, and the lower cavity is composed of the lower die installed on the middle die and the lower punch installed on the lower die; the upper die, middle die and lower die are positioned and Guided connection and sequential stacking; the upper mold, middle mold and lower mold are three unit assemblies, the upper mold includes the upper punch, the upper mold backing plate, the upper mold push plate and the pull hook, the upper mold push plate and the pull hook pass through Screw connection; the middle mold includes a cold runner device, an upper heat shield, an upper die, a lower heat shield, a lower die and side plates, and the cold runner device is installed in the center of the middle mold. The main channel, the branch channel, the up and down symmetrical vertical channel and the cooling medium circulation channel used to control the temperature of the rubber in the channel; the limit block and the connecting plate are installed on the side plate, and the connecting plate is connected with the upper ejector rod by screws; The lower mold includes the lower punch, the lower mold backing plate and the lower mold push plate, the lower mold push plate and the lower demoulding rod are connected by screws, the upper die and the lower die are provided with tunnels, and electric heating elements are installed in the tunnels; the upper mold It is fixed on the beam of the injection machine, the lower mold is fixed on the movable platform of the injection machine, and the middle mold is located between the upper mold and the lower mold.

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