CN201399867Y

CN201399867Y - Rubber injection molding machine

Info

Publication number: CN201399867Y
Application number: CN2009201026198U
Authority: CN
Inventors: 刘建国
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-05
Filing date: 2009-05-05
Publication date: 2010-02-10
Anticipated expiration: 2019-05-05

Abstract

The utility model relates to a rubber injection molding machine, which is adaptable to pressing rubber products of various types of rubber compounds and belongs to the technical field of plastic extrusion molding equipment. The structure of the rubber injection molding machine includes a framework equipped with an injection device. The rubber injection molding machine is characterized in that theinjection device is fixed onto an injection sliding table capable of longitudinally moving along the framework, a mold closing device is arranged in front of an injection spraying nozzle of the injection device, the mold closing device structurally includes a front molding board fixed relatively to the framework, and a feeding hole capable of closely matching with the injection spraying nozzle ofthe injection device is arranged on the front molding board. The rubber injection molding machine has the advantages of simple structure, accurate injection quantity and precise matching of a screw rod and a machine barrel. When in work, no rubber compounds need to be accumulated at the front end of the screw rod, and the rubber compounds are injected into a mold cavity while in the process of plasticizing. Simultaneously, both the vulcanization temperature and the residence time of the rubber compounds in the mold cavity can be automatically controlled, thereby the rubber injection molding machine not only has small equipment investment and low energy consumption, but also can improve production efficiency substantially, achieve stable product quality and high ratio of finished products,and be suitable for the production of rubber compound products with different viscosity.

Description

Rubber injection moulding machine

Technical field

The utility model relates to a kind of rubber injection moulding machine, is applicable to the rubber of compacting all kinds sizing material, and genus rubber is extruded, the former technical field.

Background technology

Existing rubber injection moulding machine, injection device have two kinds:

The one, screw rod plunger formula, working method are cold burden feeding screw rod system, after plasticizing, clamp-on the injection room system of plunger earlier, at last again by plunger injection to die cavity.This mode greatest drawback is that the sizing material that injects the injection room earlier at last could inject die cavity, can make the sizing material time of staying prolongation that contacts with plunger face like this and cause sulfuration, thereby waste product occur, and main equipment more is prone to like this.In addition, this kind equipment is often very huge, and complex structure is not suitable for producing small-sized goods, and equipment investment is big in production reality undoubtedly, and power consumption is high, and efficient is low, and product quality is difficult to stablize.

The 2nd, the reciprocating screw injection device, its working method is after sizing material moves on to screw front end, screw rod retreats while rotating, die cavity reinjects after front end accumulates certain glue amount, though this kind injection device has deducted the plunger system of the above-mentioned type machine, but still have two big shortcomings: when (1) produced relatively large goods, the amount of moving was big behind the screw rod, and the sizing material plasticizing is restricted.(2) between screw rod and the material tube inner wall because relative slip is arranged, and fit clearance is strengthened, can cause sizing material adverse current and leakage current during injection, cause the part sizing material to stop repeatedly, produce coking, thereby injection pressure is restricted, and can only be suitable for low viscosity sizing material and small-sized goods.

The utility model content

The utility model technical issues that need to address provide a kind of rubber injection moulding machine, and it is simple in structure, equipment investment is little, power consumption is low, and injection volume is accurate, the production efficiency height, and quality of item is stable.

For solving the problems of the technologies described above, technical solution adopted in the utility model is:

Rubber injection moulding machine, comprise in its structure, frame, injection device is set on the frame, injection device is fixed on the injection slide unit that can move along stands longitudinal, injection nozzle the place ahead of injection device is provided with mold closing mechanism, and the mold closing mechanism structure includes the fixing front template of relative frame, offer on the front template can with the charging aperture of the injection nozzle driving fit of injection device.

Further improvement of the utility model is:

The injection device structure comprises can be along the injection slide unit of stands longitudinal slip, fixing gearbox on the injection slide unit, gearbox connects drive motors, the output shaft connecting screw rod of gearbox, the screw rod outer wall cooperates machine barrel, the machine barrel tail end is fixed on the reduction box outer wall, front end is provided with injection nozzle, the machine barrel outer wall surrounds cooling jacket, be provided with between injection slide unit and the front template and can drive the small oil tank that the injection slide unit slides, the piston rod of small oil tank is fixed on the injection slide unit by cylinder bracket, and the cylinder body of small oil tank is fixed on the front template end face.

The injection slide unit connects frame by line slide rail.

The mold closing mechanism structure comprises front template, middle template, the rear pattern plate that sets gradually along stands longitudinal, front template is fixed on the frame, the inboard fixing preceding heating plate of front template, offer the charging hole that is communicated with charging aperture on the preceding heating plate, the inboard fixing back of middle template heating plate runs through front template, middle template and rear pattern plate guide pillar is set, guide pillar front end and front template are fixed, tail end and rear pattern plate are fixed, and middle template and guide pillar are slidingly matched, the master cylinder that template vertically moved during horizontal fixed can drive on the rear pattern plate.

The guide pillar tail end is provided with screw thread, and rear pattern plate is sleeved on guide pillar screw thread position, in rear pattern plate outer face and guide pillar threaded engagement adjustment disk is installed.

Safety guard is installed on the adjustment disk, and the safety guard structure comprises feeler lever and limit switch.

The piston rod of master cylinder connects the driving lever outer end of double-crank five hinges, the outer face of template and the inner face of rear pattern plate during the passive bar tail end of double-crank five hinges connects, and the cylinder body of master cylinder is fixed on the rear pattern plate end face.

Small oil tank and master cylinder are communicated with hydraulic pump, and temperature sensor is set on the injection device, and the electric control gear of sizing material temperature and sizing material injection volume can be accurately controlled in fluid,matching press pump, drive motors and temperature sensor setting.

Owing to adopted technique scheme, the beneficial effect that the utility model produced is:

The utility model has overcome the shortcoming of existing injector, simple in structure and injection volume is accurate, screw rod cooperates accurate with machine barrel, need not during work at screw front end accumulation sizing material, while plastifying sizing material is injected die cavity, simultaneously, sizing material curing temperature and time of staying in die cavity all can realize controlling automatically, so not only equipment investment little, consume energy low, and significantly enhance productivity, quality of item is stable, and the yield rate height is fit to the production of different viscosities sizing material goods.

Description of drawings

Fig. 1 is the rubber injection moulding machine structural representation.

Among the figure: 1, frame, 2, the injection slide unit, 3, gearbox, 4, screw rod, 5, machine barrel, 6, cooling jacket, 7, injection nozzle, 8, front template, 9, preceding heating plate, 10, back heating plate, 11, middle template, 12, guide pillar, 13, double-crank five hinges, 14, rear pattern plate, 15, adjustment disk, 16, master cylinder, 17, cylinder bracket, 19, small oil tank.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:

Shown in Figure 1, structure of the present utility model comprises, frame 1, and the upper left side of frame 1 is installed injection device is set.

The injection device structure comprises can be along the injection slide unit 2 of frame 1 longitudinal sliding motion, fixing gearbox 3 on the injection slide unit 2, gearbox connects drive motors, the output shaft connecting screw rod 4 of gearbox 3, screw rod 4 outer walls cooperate machine barrel 5, machine barrel 5 tail ends are fixed on reduction box 3 outer walls, front end is provided with injection nozzle 7, machine barrel 5 outer walls surround cooling jacket 6, be provided with the small oil tank 19 that can drive injection slide unit 2 between injection slide unit 2 and the front template 8, the piston rod of small oil tank 19 is fixed on the injection slide unit 2 by cylinder bracket 17, and the cylinder body of small oil tank 19 is fixed on front template 8 end faces; Injection slide unit 2 connects frame 1 by line slide rail; Injection nozzle 7 the place aheads of injection device are provided with mold closing mechanism, and the mold closing mechanism structure includes the fixing front template 8 of relative frame 12, offer on the front template 8 can with the charging aperture of injection nozzle 7 driving fits of injection device; Stretching of small oil tank 19 piston rods drives whole injection device and horizontally slips, guarantees injection nozzle 7 and the closed butt joint of die feeding road when injecting glue, behind injecting glue, can make injection nozzle break away from preceding heating plate 9.

Described injection device also can adopt prior art constructions, as screw rod plunger formula or reciprocating screw injecting type.

The mold closing mechanism structure comprises front template 8, middle template 11, the rear pattern plate 14 that vertically sets gradually along frame 1, front template 8 is fixed on the frame 1, front template 8 inboard fixing preceding heating plates 9, offer the charging hole that is communicated with charging aperture on the preceding heating plate 9, middle template 11 inboard fixing back heating plates 10, run through front template 8, middle template 11 and rear pattern plate 14 four guide pillars 12 are set, guide pillar 12 front ends and front template 8 are fixing, tail end and rear pattern plate 14 are fixing, middle template 11 is slidingly matched the master cylinder 16 that template 11 vertically moved during horizontal fixed can drive on the rear pattern plate 14 with guide pillar 12; Between the forward and backward heating plate various moulds can be installed.

Guide pillar 12 tail ends are provided with screw thread, and rear pattern plate 14 is sleeved on guide pillar 12 screw thread positions, in rear pattern plate 14 outer faces and guide pillar 12 threaded engagement adjustment disk 15 are installed; Can accurately regulate distance between front template and the middle template; on the adjustment disk 15 safety guard is installed, the safety guard structure comprises feeler lever and limit switch, during safe stroke that central template stroke surpass to be set; hydraulic system can quit work immediately, avoids main piston to push up mould bad.

The piston rod of master cylinder 16 connects the driving lever outer end of double-crank five hinges 13, the outer face of template 11 and the inner face of rear pattern plate 14 during the passive bar tail end of double-crank five hinges 13 connects, and the cylinder body of master cylinder 16 is fixed on rear pattern plate 14 end faces; The stretching motion of master cylinder 16 drives 13 actions of double-crank five hinges, thereby realizes quick matched moulds, the effect that stops and reaching locked mode at a slow speed;

Described mold closing mechanism also can adopt other prior aries, drives clasp mould mechanism as simple oil cylinder and screw pair.

Small oil tank 19 and master cylinder 16 are communicated with hydraulic pump, and temperature sensor and electric control gear are set on the injection device, and sizing material temperature and sizing material injection volume can be accurately controlled in fluid,matching press pump, drive motors and temperature sensor setting.

Production process of the present utility model is:

Initial elder generation is warming up to mould temperature required by manufacturing technique requirent, the injection nozzle 7 of injection device moves into place, start master cylinder 16 then, template 11 moves to left and carries out matched moulds, locked mode in making, again from the spout charging by screw rod 4 give mould after, directly sizing material accurately is incident upon mould with sizing material limit plasticizing marginal not according to setting value, after sizing material is full of, screw rod 4 stops feeding automatically, and the sizing material temperature is accurately controlled by automatic detection and cooling system; Pressurize sulfuration again after feeding finishes, cure time arrives, and moves pressure release after master cylinder 16 piston rods and the middle template, and goods are taken out in die sinking, finish production process for the first time, and then matched moulds, and feeding enters circulation next time again.

Claims

1, rubber injection moulding machine, comprise in its structure, frame, injection device is set on the frame, it is characterized in that: described injection device is fixed on the injection slide unit that can move along stands longitudinal, injection nozzle the place ahead of injection device is provided with mold closing mechanism, and the mold closing mechanism structure includes the fixing front template of relative frame, offer on the front template can with the charging aperture of the injection nozzle driving fit of injection device.

2, rubber injection moulding machine according to claim 1, it is characterized in that: described injection device structure comprises can be along the injection slide unit of stands longitudinal slip, fixing gearbox on the injection slide unit, gearbox connects drive motors, the output shaft connecting screw rod of gearbox, the screw rod outer wall cooperates machine barrel, the machine barrel tail end is fixed on the reduction box outer wall, front end is provided with injection nozzle, the machine barrel outer wall surrounds cooling jacket, be provided with between injection slide unit and the front template and can drive the small oil tank that the injection slide unit slides, the piston rod of small oil tank is fixed on the injection slide unit by cylinder bracket, and the cylinder body of small oil tank is fixed on the front template end face.

3, rubber injection moulding machine according to claim 2 is characterized in that: described injection slide unit connects frame by line slide rail.

4, rubber injection moulding machine according to claim 1, it is characterized in that: described mold closing mechanism structure comprises the front template that sets gradually along stands longitudinal, middle template, rear pattern plate, front template is fixed on the frame, the inboard fixing preceding heating plate of front template, offer the charging hole that is communicated with charging aperture on the preceding heating plate, the inboard fixing back of middle template heating plate, run through front template, middle template and rear pattern plate are provided with guide pillar, guide pillar front end and front template are fixed, tail end and rear pattern plate are fixed, middle template and guide pillar are slidingly matched the master cylinder that template vertically moved during horizontal fixed can drive on the rear pattern plate.

5, rubber injection moulding machine according to claim 4 is characterized in that: described guide pillar tail end is provided with screw thread, and rear pattern plate is sleeved on guide pillar screw thread position, in rear pattern plate outer face and guide pillar threaded engagement adjustment disk is installed.

6, rubber injection moulding machine according to claim 5 is characterized in that: on the described adjustment disk safety guard is installed, the safety guard structure comprises feeler lever and limit switch.

7, rubber injection moulding machine according to claim 4, it is characterized in that: the piston rod of described master cylinder connects the driving lever outer end of double-crank five hinges, the outer face of template and the inner face of rear pattern plate during the passive bar tail end of crank five hinges connects, the cylinder body of master cylinder is fixed on the rear pattern plate end face.

8, rubber injection moulding machine according to claim 4, it is characterized in that: described small oil tank and master cylinder are communicated with hydraulic pump, temperature sensor is set on the injection device, and the electric control gear of sizing material temperature and sizing material injection volume can be accurately controlled in fluid,matching press pump, drive motors and temperature sensor setting.