CN100558528C - Large-scale injection machine - Google Patents

Abstract

A large-scale injection molding machine, the control system is installed on the base, the injection device is placed on the upper part of the control system and the upper template, three injection devices are arranged in the shape of a square along the length of the mold, and each injection device is equipped with a plasticizer device and a feeding device. The four clamping cylinders in the mold clamping part are arranged in a square shape, and the two mold clamping cylinders have a cylinder body in total. The eight Gelin pillars are divided into two parts, which are respectively connected to the cylinder body of a mold clamping cylinder and an upper template and a movable template. It is placed between the upper template and the cylinder of the clamping cylinder, and moves up and down with eight Corinthians as guide rails. The cold runner is fixed on the upper template, the base of the mold shifting device is fixed on the movable template, and the four movable Pads and pad oil cylinders are connected to the lower part of the movable formwork by using eight Corinthian columns as guide rails. The mold is divided into an upper mold and a lower mold. The upper mold is fixed on the cold runner, and the lower mold is connected with the slide plate of the mold moving device.

Description

Large Injection Molding Machine

technical field

The invention relates to a solid rubber injection molding machine.

Background technique

In the prior art, there are two ways to form solid rubber products: one is to use injection molding for small and medium-sized products, and the injection molding machine currently used has at most two sets of injection devices, and each set of injection devices is limited by the size and strength of steel. , Hydraulic oil pressure and other factors, the injection volume is limited, so it is only suitable for small and medium-sized products. For larger products, it cannot be molded at one time due to insufficient injection volume; the second is to use a flat vulcanizing machine to make large products. The flat vulcanizing machine does not have an injection device, it is manually placed the solid rubber directly into the mold cavity, and the pressure generated by locking the two halves of the mold with the clamping machine makes the rubber fill the entire mold cavity. This molding method has obvious advantages. Disadvantages: 1. The glue is fed manually, which is labor-intensive and the production efficiency is very low; 2. The glue is fed at one time. When the amount of glue is not enough, it cannot be replenished, which will easily cause partial filling of the mold cavity; 3. Only rely on The clamping pressure makes the rubber fill, and the uneven pressure in the mold cavity causes uneven density and poor compactness of the product.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a new type of large-scale rubber injection molding machine to solve the problem that the existing injection molding machine can only produce small and medium-sized products and the low production efficiency and poor product quality of the flat vulcanizing machine. Stability issue.

The technical solution of the present invention is: a large-scale injection molding machine, which includes three feeding devices, three plasticizing devices, three injection devices, four clamping oil cylinders, two upper templates, cold runners, bagel Lin Zhu, moving formwork, four pad guide rails, four moving pads, four clamping cylinders, four pad cylinders, mold moving device, base, control system, lower mold and upper mold.

The control system is installed on the base, and the three injection devices are placed on the upper part of the control system and the upper template. The three injection devices are arranged in the shape of a letter along the length of the mold. Each injection device is equipped with a plasticizing device and a feeding device. .

The four clamping cylinders in the mold clamping part are arranged in a square shape, and the two mold clamping cylinders have a cylinder body in total. The eight Gelin pillars are divided into two parts, which are respectively connected to the cylinder body of a mold clamping cylinder and an upper template and a movable template. It is placed between the upper template and the cylinder of the clamping cylinder, and moves up and down with eight Corinthians as guide rails. The cold runner is fixed on the upper template, the base of the mold shifting device is fixed on the movable template, and the four movable Pads and pad oil cylinders are connected to the lower part of the movable formwork by using eight Corinthian columns as guide rails.

The mold is divided into an upper mold and a lower mold. The upper mold is fixed on the cold runner, and the lower mold is connected with the slide plate of the mold moving device.

The working principle of the present invention is like this:

The rubber material is sent into the plasticizing device through three feeding devices, and enters the injection device after being plasticized, and stops feeding and plasticizing after the injection device is filled with rubber material;

Heat the mold to the vulcanization temperature and keep it at a constant temperature;

Start the mold clamping cylinder to close the mold, the movable platen and the lower mold move up, and the upper and lower molds approach. After the mold is clamped in place, the four movable pads move inward to the mold locking position under the action of the pad cylinders, and then the four clamping cylinders are activated simultaneously, and the power is transmitted to the movable template through the pads to lock the upper and lower molds Between the moving template and the upper template (as shown in Figure 2);

Start the injection device for injection, the rubber is injected into the three inlets of the cold runner through the nozzles of the three injection devices, and the necessary cooling is carried out in the sub-runner of the cold runner and the nozzle body, and then through the main channel of the mold and the sub-flow channel into the mold cavity. The strong pressure generated by the injection allows the rubber to fully fill all parts of the cavity.

After injection, the rubber material is vulcanized in the mold cavity, and the curing time is set according to the properties of the rubber material.

After the vulcanization is over, start the clamping cylinder to release the pressure, and move the pad outward to the neutral position. Then carry out the mold opening operation. The mold clamping cylinder drives the movable template and the lower mold to move down slowly, so that the upper and lower molds are separated, and the product moves down with the lower mold. When the product and the upper mold are completely separated, the mold is quickly opened to the lowest position (such as Shown in accompanying drawing 1). Start the mold moving device, move the lower mold and the product out, take out the product, and complete a product production process.

The beneficial effects of the present invention are:

1. The injection molding machine is equipped with three injection devices to ensure a large injection volume, and the four clamping cylinders can provide sufficient clamping force. The pad type clamping is adopted to make the clamping cylinder have an ultra-short stroke to achieve a low bed structure, it is possible to produce larger products than existing injection molding machines.

2. Compared with the flat vulcanizing machine, the present invention can greatly improve production efficiency, reduce labor intensity, and produce products with uniform density and good compactness.

The detailed structure of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Accompanying drawing 1 is the structural representation of the present invention under the mold-opening state;

Accompanying drawing 2 is the structural representation that the present invention is in the closed mold state;

Accompanying drawing 3 is the left view of Fig. 1;

Accompanying drawing 4 is the government view of Fig. 1;

Accompanying drawing 5 is A-A sectional view of accompanying drawing 2.

Detailed ways

As shown in the attached figure: a large injection molding machine, which includes three feeding devices 1, three plasticizing devices 2, three injection devices 3, four clamping cylinders 4, two upper templates 5, and cold runners 6. Eight Corinthian pillars 7. Moving template 8. Four pad guide rails 9. Four moving pads 10. Four clamping cylinders 11. Four pad cylinders 12. Mold moving device 13. Base 14. Control System 15 , lower die 16 and upper die 17 .

The control system 15 is installed on the base 14, and the three injection devices 3 are placed on the upper part of the control system 15 and the upper template 5. The three injection devices 3 are arranged in the shape of a square along the length of the mold, and each injection device is equipped with a plasticizing device. 2 and a feeding device 1.

The four clamping oil cylinders 11 of the mold clamping part are arranged in a square shape, and the two mold clamping cylinders 11 have a cylinder body in total. The eight Corinthian pillars 7 are divided into two parts, which are respectively connected to the cylinder body of one mold clamping cylinder 11 and an upper cylinder. The template 5 and the movable template 8 are placed between the upper template 5 and the cylinder body of the clamping cylinder 11, and the eight Corinthian pillars 7 are used as guide rails to move up and down, the cold runner 6 is fixed on the upper template 5, and the mold moving device 13 The base is fixed on the movable template 8, and four movable pads 10 and pad oil cylinders 12 are connected to the bottom of the movable template 8 by taking eight Corinthian columns as guide rails.

The mold is divided into an upper mold 17 and a lower mold 16, the upper mold 17 is fixed on the cold runner 6, and the lower mold 16 is connected with the slide plate of the mold moving device 13.

Claims (2)

1, a kind of large-scale injection machine is characterized in that: it comprises three pay-offs (1), three plasticizing apparatus (2), three injection devices (3), four die cylinders (4), two blocks of cope match-plate patterns (5), cold runner (6), eight Gen Gelin posts (7), moving platen (8), four cushion block guide rails (9), four mobile cushion blocks (10), four Mode-locking oil cylinders (11), four cushion block oil cylinders (12), mould shifting device (13), base (14), control system (15), counterdie (16) and patrix (17); Control system (15) is installed in base (14), three injection devices (3) place the top of control system (15) and cope match-plate pattern (5), every injection device disposes a plasticizing apparatus (2) and a pay-off (1), four Mode-locking oil cylinders (11) of locked mode part become square to arrange, two Mode-locking oil cylinders (11) are totally 1 cylinder body, eight brother woods posts (7) separated into two parts, the cylinder body and the cope match-plate pattern (5) that connect a Mode-locking oil cylinder (11) respectively, moving platen (8) places between the cylinder body of cope match-plate pattern (5) and Mode-locking oil cylinder (11), with eight brother woods posts (7) is that guide rail moves up and down, cold runner (6) is fixed on the cope match-plate pattern (5), the base of mould shifting device (13) is fixed on the moving platen (8), four movably cushion block (10) and cushion block oil cylinder (12) by being the bottom that guide rail is connected moving platen (8) with eight brother woods posts, mould is divided into patrix (17) and counterdie (16), patrix (17) is fixed on the cold runner (6), and counterdie (16) is connected with the slide plate of mould shifting device (13).

2, large-scale injection machine according to claim 1 is characterized in that: three injection devices (3) are located at the top of control system (15) and cope match-plate pattern (5), and are the isosceles triangle arrangement along the length direction of mould.

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