CN211467368U - Injection molding machine clamping cylinder structure - Google Patents

Abstract

The utility model relates to a mold locking cylinder structure of an injection molding machine, which comprises a mounting seat arranged above the injection molding machine, a small-bore mold closing oil cylinder and a large-bore pressurizing oil cylinder which are vertically arranged on the mounting seat; the large-cylinder-diameter pressurizing oil cylinder comprises a cavity arranged at the bottom of the mounting seat, a piston movably arranged in the cavity and capable of moving up and down, an end cover arranged at the bottom of the mounting seat and used for sealing the cavity, and a brake lever, wherein the upper end of the brake lever is connected with the piston, and the lower end of the brake lever vertically penetrates through the end cover; an upper oil port and a lower oil port are respectively arranged on the top of the mounting seat and the end cover; the utility model discloses a little cylinder diameter compound die hydro-cylinder drive cope match-plate pattern goes up and down, can improve compound die efficiency greatly, and big cylinder diameter pressure boost hydro-cylinder only need finely tune the upper and lower position of contracting brake pole, realizes the mode locking with the cooperation of contracting brake mechanism, and consequently the working stroke is short, and occupation space can effectively reduce the capacity of required hydraulic oil, has reduced use cost.

Description

An injection molding machine clamping cylinder structure

technical field

The utility model relates to the field of injection molding, in particular to a clamping cylinder structure of an injection molding machine.

Background technique

Injection molding machine is a common plastic machine used to produce plastic products; during production, a molding die is installed on the injection molding machine, and the plastic product is formed in the molding die, and a large molding pressure is required when the product is formed, so the injection molding machine is basically installed. There is a clamping device, which is used to withstand the molding pressure of the molding die; for example, the prior art 201320863366.2 discloses a liquid-filled clamping mechanism for a plastic injection blow molding machine, but the existing clamping cylinder has a relatively large stroke, which not only takes up a lot of space. The large space and the large oil flow required make the machine have to be equipped with a large-displacement hydraulic source (such as a hydraulic pump), resulting in a large energy consumption of the machine and a high production cost.

Utility model content

The purpose of the utility model is to provide a clamping cylinder structure of an injection molding machine in order to overcome the deficiencies of the prior art.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is: an injection molding machine clamping cylinder structure, comprising a mounting seat arranged above the injection molding machine, a small cylinder diameter cylinder vertically arranged on the mounting seat and used to drive the upper template to rise and fall. A mold oil cylinder, a large-bore booster oil cylinder arranged at the bottom of the mounting seat; the large-bore diameter booster oil cylinder comprises a cavity arranged at the bottom of the mounting seat, a piston movably arranged in the cavity to move up and down, and a cavity opposite to the cavity arranged at the bottom of the mounting seat An end cover that seals the body, a brake rod whose upper end is connected to the piston and whose lower end vertically passes through the end cover; the top of the mounting seat and the end cover are respectively provided with an upper oil port and a lower oil port; the piston and the cavity are respectively provided with an upper oil port and a lower oil port Sealing structures are provided between the bodies, between the brake rod and the end cover, and at the connection between the end cover and the cavity.

Preferably, the sealing structure between the piston and the cavity includes a first O-ring and a first wear-resistant ring respectively arranged on the surface of the piston.

Preferably, there are two first O-rings, and they are located on both sides of the first wear-resistant ring respectively.

Preferably, the upper end of the end cap is provided with a boss extending into the cavity; the sealing structure is provided between the boss and the cavity.

Preferably, the sealing structure between the boss and the cavity includes a second O-shaped sealing ring arranged on the surface of the boss.

Preferably, there are two second O-rings, and they are placed at an upper and lower interval.

Preferably, the sealing structure between the brake lever and the end cover includes a dust ring, a shaft oil seal and a second wear ring which are arranged on the inner surface of the end cover and are spaced from outside to inside.

Preferably, the inner surface of the end cover is further provided with a third O-ring between the shaft oil seal and the second wear ring.

Preferably, the lower oil port is arranged on the outer surface of the end cover and is L-shaped.

Preferably, the end cover is fixed to the bottom of the mounting seat by a plurality of bolts evenly distributed around the circumference.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

1. The utility model drives the upper template to rise and fall through the small-bore mold clamping oil cylinder, which can greatly improve the mold-closing efficiency, while the large-bore pressurized oil cylinder only needs to fine-tune the upper and lower positions of the brake lever, and cooperate with the brake mechanism to achieve mold locking. Therefore, the working stroke is short and does not take up space, which can effectively reduce the required hydraulic oil capacity, reduce the cost of use, and at the same time reduce the volume of the oil tank, so that the cost of replacing hydraulic oil for customers is also reduced;

2. The position of the large-bore supercharged oil cylinder in the present utility model can only be readjusted when a new mold is replaced, which greatly reduces the number of activities and thus greatly prolongs the service life;

3. The utility model uses the mounting seat as the cylinder body, which is not only convenient for installation and manufacture, but also saves space.

Description of drawings

Below in conjunction with accompanying drawing, the technical scheme of the present utility model is further described:

Accompanying drawing 1 is the installation schematic diagram of the clamping cylinder structure of the injection molding machine according to the utility model;

FIG. 2 is a partial enlarged view of A in FIG. 1 .

Among them: 1. Mounting seat; 2. Small cylinder diameter clamping cylinder; 3. Large cylinder diameter booster cylinder; 31. Piston; 311. First O-ring; 312. First wear ring; 32. Cavity; , Lower oil port; 34, End cover; 341, Second O-ring; 342, Second wear ring; 342, Third O-ring; 344, Shaft oil seal; 345, Dust ring; 346, Boss; 35, brake lever; 36, oil port; 4, brake mechanism; 5, upper template.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1-2 is the mold clamping cylinder structure of the injection molding machine according to the utility model, which includes a mounting seat 1 arranged above the injection molding machine, and a small cylinder diameter mold clamping vertically arranged on the mounting seat 1 for driving the upper template 5 to rise and fall. Cylinder 2, a large-bore booster cylinder 3 arranged at the bottom of the mounting seat 1; the large-bore booster cylinder 3 includes a cavity 32 arranged at the bottom of the mounting seat 1, and a piston 31 movably arranged in the cavity 32 to move up and down , The end cover 34 which is arranged at the bottom of the mounting seat 1 to seal the cavity 32, the upper end is connected with the piston 31 and the lower end passes through the end cover 34 vertically; the top of the mounting seat 1 and the end cover 34 are respectively Correspondingly, an upper oil port 36 and a lower oil port 33 are provided; sealing structures are provided between the piston 31 and the cavity 32, between the brake rod 35 and the end cover 34, and at the connection between the end cover 34 and the cavity 32 When working: first install the injection molding machine clamping cylinder structure described in the present utility model to the left and right sides of the injection molding machine respectively, that is, the output end of the small cylinder diameter clamping cylinder 2 is connected with the upper template 5, and the brake lever 35 is connected at the same time. The lower end of the injection molding machine passes through the brake mechanism 4 and the upper template 5 sequentially from top to bottom, and then drives the upper template 5 to move downward through the small cylinder diameter mold clamping cylinder 2 until the mold is closed, and then the injection molding machine controller automatically records the height of the mold, Because the height of each pair of molds is different, it is easy to cause the threads on the brake mechanism 4 to not be accurately clamped into the threads on the brake lever 35. Therefore, it is necessary to use the large-bore booster cylinder 3 to adjust the upper and lower positions of the brake lever 35. Fine-tuning, and finally clamping the brake rod 35 through the brake mechanism 4 to achieve mold locking. Here, the large-bore booster oil cylinder 3 will only re-adjust its position when a new mold is replaced, which greatly reduces the number of activities, thereby greatly extending the The service life is shortened, and since the large-bore booster cylinder 3 only needs to fine-tune the upper and lower positions of the brake lever 35, the working stroke is short, does not occupy space, can effectively reduce the required hydraulic oil capacity, and reduce the use cost.

Further, the sealing structure between the piston 31 and the cavity 32 includes a first O-ring 311 and a first wear-resistant ring 312 respectively disposed on the surface of the piston 31 .

Further, two first O-rings 311 are provided, and they are respectively located on both sides of the first wear-resistant ring 312 to achieve bidirectional sealing.

Further, the upper end of the end cover 34 is provided with a boss 346 extending into the cavity 32; the sealing structure is arranged between the boss 346 and the cavity 32, which not only plays a positioning role, is convenient for installation, but also facilitates sealing .

Further, the sealing structure between the boss 346 and the cavity 32 includes a second O-ring 341 disposed on the surface of the boss 346 .

Further, two second O-rings 341 are provided, and they are placed at an upper and lower interval, so that the sealing effect is better and oil leakage is prevented.

Further, the sealing structure between the brake lever 35 and the end cover 34 includes a dust ring 345 , a shaft oil seal 344 and a second wear ring 342 which are arranged on the inner surface of the end cover 34 and are spaced from outside to inside. .

Further, the inner surface of the end cover 34 is further provided with a third O-ring 343 between the shaft oil seal 344 and the second wear-resistant ring 342, which has a better sealing effect and prevents oil leakage.

Further, the lower oil port 33 is arranged on the outer surface of the end cover 34 and is L-shaped, which can effectively prevent the brake mechanism 4 from colliding with the oil pipe of the lower oil port 33 during the up and down movement of the upper template 5, resulting in damage. .

Further, the end cover 34 is fixed to the bottom of the mounting seat 1 by a plurality of bolts evenly distributed around the circumference, which is convenient for installation and removal.

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an injection molding machine mode locking cylinder structure which characterized in that: the device comprises a mounting seat arranged above an injection molding machine, a small-cylinder-diameter die-closing oil cylinder vertically arranged on the mounting seat and used for driving an upper template to lift, and a large-cylinder-diameter pressurizing oil cylinder arranged at the bottom of the mounting seat; the large-cylinder-diameter pressurizing oil cylinder comprises a cavity arranged at the bottom of the mounting seat, a piston movably arranged in the cavity and capable of moving up and down, an end cover arranged at the bottom of the mounting seat and used for sealing the cavity, and a brake lever, wherein the upper end of the brake lever is connected with the piston, and the lower end of the brake lever vertically penetrates through the end cover; an upper oil port and a lower oil port are correspondingly arranged on the top of the mounting seat and the end cover respectively; and sealing structures are arranged between the piston and the cavity, between the band-type brake rod and the end cover and at the joints of the end cover and the cavity.

2. The mold-locking cylinder structure of injection molding machine according to claim 1, wherein: the sealing structure between the piston and the cavity comprises a first O-shaped sealing ring and a first wear-resisting ring which are respectively arranged on the surface of the piston.

3. The mold-locking cylinder structure of injection molding machine according to claim 2, wherein: the first O-shaped sealing rings are arranged in two numbers and are respectively positioned on two sides of the first wear-resisting ring.

4. The mold-locking cylinder structure of injection molding machine according to claim 1, wherein: the upper end of the end cover is provided with a boss extending into the cavity; the sealing structure is arranged between the boss and the cavity.

5. The mold-locking cylinder structure of injection molding machine according to claim 4, wherein: the sealing structure between the boss and the cavity comprises a second O-shaped sealing ring arranged on the surface of the boss.

6. The mold-locking cylinder structure of injection molding machine according to claim 5, wherein: the second O-shaped sealing rings are arranged in two numbers and are arranged at intervals from top to bottom.

7. The mold-locking cylinder structure of injection molding machine according to claim 1, wherein: the sealing structure between the brake contracting rod and the end cover comprises a dustproof ring, a shaft oil seal and a second wear-resisting ring which are arranged on the inner surface of the end cover and are sequentially arranged from outside to inside at intervals.

8. The mold-locking cylinder structure of injection molding machine of claim 7, wherein: and a third O-shaped sealing ring is arranged between the shaft oil seal and the second wear-resisting ring on the inner surface of the end cover.

9. The mold-locking cylinder structure of an injection molding machine according to any one of claims 1 to 8, wherein: the lower oil port is arranged on the outer surface of the end cover and is L-shaped.

10. The injection molding machine mold locking cylinder structure of claim 9, wherein: the end cover is fixed at the bottom of the mounting seat through a plurality of bolts which are uniformly distributed on the circumference.

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