CN211641106U

CN211641106U - Connecting structure between balance cylinder and lower die assembly

Info

Publication number: CN211641106U
Application number: CN201922084663.7U
Authority: CN
Inventors: 韩剑; 刘晓; 朱新韦; 李磊
Original assignee: Jinan Yuechuang Hydraulics Machinery Manufacturing Co ltd
Current assignee: Jinan Yuechuang Hydraulics Machinery Manufacturing Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-10-09
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses a connection structure between balance cylinder and the lower mould subassembly relates to brake block production facility technical field. The connecting structure comprises a guide bolt arranged between a cylinder body of a balance cylinder and a lower die connecting plate of a lower die assembly, wherein the lower end of the guide bolt is fixedly connected with the cylinder body of the balance cylinder, and a spring is sleeved on the guide bolt and positioned between the lower die connecting plate and the cylinder body of the balance cylinder. And a counter bore used for accommodating the head part of the guide bolt is arranged on the lower die connecting plate. And a lower die heat insulation plate of the lower die assembly is provided with an avoiding hole for avoiding the guide bolt. And a locking nut is arranged on the guide bolt and below the spring. The structure adopts the form of fixing the cylinder body, avoids the stress of the plunger piston and can effectively solve the problem of oil leakage of the balance cylinder.

Description

Connecting structure between balance cylinder and lower die assembly

Technical Field

The utility model belongs to the technical field of brake block production facility technique and specifically relates to a connection structure between balance cylinder and the lower mould subassembly.

Background

In order to solve the problem of different pressing compaction degrees of brake pads caused by uneven filling, patent No. CN201510847213.2 discloses a floating equal-ratio hot press applied to brake pad production, which adopts a structure that a die cavity (formed by a male die and a female die) can be moved out laterally.

In order to reduce the complexity of the whole machine and the production cost, patent No. CN201620349262.3 discloses an isometric hot press convenient for die replacement, which adopts a fixed die cavity structure, i.e. the die cavity can only move up and down and cannot move out laterally.

The cylinder body of the balance cylinder in the hot press is fixedly connected with the piston rod of the main oil cylinder, the plunger of the balance cylinder is fixedly connected with the lower die connecting plate in the lower die assembly through a screw, the middle die assembly is fixedly arranged on the middle die mounting plate, and the middle die mounting plate is connected with the upright post in a sliding mode. The mould locking device is characterized in that a mould locking oil cylinder is arranged between the middle mould mounting plate and the lower base and on the left side and the right side of the main oil cylinder respectively, a piston rod of the mould locking oil cylinder is fixedly connected with the middle mould mounting plate, and a cylinder body of the mould locking oil cylinder is fixedly connected with the lower base. When the cavity needs to be pulled open for filling operation, the piston rod of the main oil cylinder is contracted, and the balance cylinder drives the lower die assembly to move downwards.

In the moving process, foreign matters exist in a certain cavity or a die is inclined sometimes, so that the male die and the female die are relatively clamped. At this time, the balance cylinder is equivalent to one point which is subjected to upward tension, one point which is subjected to downward tension, and the two stress points are not overlapped, so that the balance cylinder has a tendency of deflection, and the plunger receives non-axial force. The problem of oil leakage and the like of the balance cylinder easily caused by long-time non-axial force action and even damage of the balance cylinder.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a connection structure between balanced jar and the lower mould subassembly, this structure adopts the fixed form of cylinder body, has avoided the plunger atress, can effectively solve the problem of balanced jar oil leak.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a connection structure between balanced jar and lower mould subassembly, is including setting up the guide bolt between the cylinder body of balanced jar and the lower mould connecting plate of lower mould subassembly, guide bolt's lower extreme with the cylinder body fixed connection of balanced jar, guide bolt on lie in the lower mould connecting plate and the cylinder body of balanced jar between the cover be equipped with the spring.

Furthermore, a counter bore used for accommodating the head of the guide bolt is arranged on the lower die connecting plate.

Furthermore, an avoiding hole for avoiding the guide bolt is formed in a lower die heat insulation plate of the lower die assembly.

Furthermore, a locking nut is arranged on the guide bolt and below the spring.

Further, when the head of the guide bolt is pressed on the lower die connecting plate under the action of the spring, a certain distance M is reserved between the upper end surface of the plunger of the balance cylinder and the lower die connecting plate.

Further, M is 5-8 mm.

Furthermore, at least two guide bolts are uniformly distributed on the cylinder body of the balance cylinder around each plunger.

Furthermore, four guide bolts are uniformly distributed on the cylinder body of the balance cylinder around each plunger.

The utility model has the advantages that:

1. this structure has changed in the past plunger and the fixed connected mode of lower mould connecting plate, has avoided the in-process plunger atress that pulls open at the die cavity, can effectually solve the problem of balanced jar oil leak, avoids the balancing pole to be pulled bad, prolongs the life of balanced jar.

2. The guide bolt as a quick-wear part has low cost, is convenient to install and disassemble, facilitates later use and maintenance and has low maintenance cost.

3. Through setting up lock nut, can avoid guide bolt to take place not hard up at the in-process of work.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is an enlarged schematic view of portion B of FIG. 3;

fig. 5 is a schematic diagram of the distribution structure of the guide bolts on the balance cylinder.

In the figure: 1-balance cylinder, 11-cylinder body, 12-plunger,

2-lower die component, 21-convex die, 22-lower die heating plate, 23-lower die heat insulation plate, 231-avoidance hole, 24-lower die connecting plate, 241-counter bore,

3-a guide bolt is arranged on the upper surface of the frame,

4-a spring is arranged on the upper surface of the shell,

and 5, locking the nut.

Detailed Description

As shown in fig. 1 and 2, a coupling structure between a balancing cylinder and a lower die assembly includes a guide bolt 3 provided between a cylinder body 11 of the balancing cylinder 1 and a lower die coupling plate 24 of the lower die assembly 2. The lower end of the guide bolt 3 is fixedly connected with the cylinder body 11 of the balance cylinder 1 through threads, a through hole for accommodating the guide bolt 3 is formed in the lower die connecting plate 24, and the head of the guide bolt 3 limits the degree of freedom of downward movement of the guide bolt 3 relative to the lower die connecting plate 24. And a spring 4 is sleeved on the guide bolt 3 between the lower die connecting plate 24 and the cylinder body 11 of the balance cylinder 1.

As a specific implementation manner, the lower die connecting plate 24 in this embodiment is provided with a counter bore 241 for receiving the head of the guide bolt 3.

The balance cylinder 1 includes a cylinder body 11 and a plunger 12, and the specific structure thereof is disclosed in patent No. 201520965414.8 and is not described herein.

The lower die assembly 2 comprises a male die 21, a lower die heating plate 22, a lower die heat insulation plate 23 and a lower die connecting plate 24 from top to bottom in sequence, and the specific structure of the lower die assembly is disclosed in the patent with the patent number of CN201620349262.3, and is not described herein again.

Further, since the guide bolt 3 is alternately in a tightened and loosened state during operation, looseness may occur under the effect of vibration. For this purpose, as shown in fig. 3 and 4, a lock nut 5 is provided on the guide bolt 3 below the spring 4, and the guide bolt 3 is fixed to the cylinder body 11 of the balancing cylinder 1 by the lock nut 5.

Further, as shown in fig. 4, an avoiding hole 231 for avoiding the head of the guide bolt 3 is provided above the counter bore 241 on the lower die heat insulation plate 23. Therefore, the thickness of the lower die connecting plate 24 can be reduced, the production cost is reduced, and the compact design of the whole equipment is facilitated.

Further, as shown in fig. 4, when the head of the guide bolt 3 is pressed against the lower die connecting plate 24 by the force of the spring 4, a certain distance M is provided between the upper end surface of the plunger 12 of the balance cylinder 1 and the lower die connecting plate 24, and preferably, the distance M between the upper end surface of the plunger 12 of the balance cylinder 1 and the lower die connecting plate 24 is 5-8 mm.

Further, as shown in fig. 5, at least two guide bolts 3 are arranged on the cylinder body 11 of the balance cylinder 1 around each plunger 12, and the guide bolts 3 are arranged around the plungers 12 uniformly.

As a specific embodiment, four guide bolts 3 are arranged on the cylinder body 11 of the balance cylinder 1 around each plunger 12 in the present embodiment.

The above description is only a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations are also considered as the protection scope of the present invention.

Claims

1. The utility model provides a connection structure between balanced cylinder and lower mould subassembly which characterized in that: including setting up the guide bolt between the cylinder body of balance cylinder and the lower mould connecting plate of lower mould subassembly, guide bolt's lower extreme with the cylinder body fixed connection of balance cylinder, guide bolt on lie in lower mould connecting plate and the cylinder body of balance cylinder between the cover be equipped with the spring.

2. A connecting structure between a balance cylinder and a lower die assembly as set forth in claim 1, wherein: and a counter bore used for accommodating the head part of the guide bolt is arranged on the lower die connecting plate.

3. A connecting structure between a balance cylinder and a lower die assembly as set forth in claim 2, wherein: and a lower die heat insulation plate of the lower die assembly is provided with an avoiding hole for avoiding the guide bolt.

4. A connecting structure between a balance cylinder and a lower die assembly as set forth in claim 1, wherein: and a locking nut is arranged on the guide bolt and below the spring.

5. A connecting structure between a balance cylinder and a lower die assembly as set forth in claim 1, wherein: when the head of the guide bolt is pressed on the lower die connecting plate under the action of the spring, a certain distance M is reserved between the upper end surface of the plunger of the balance cylinder and the lower die connecting plate.

6. A connecting structure between a balance cylinder and a lower die assembly as set forth in claim 5, wherein: and M is 5-8 mm.

7. A connecting structure between a balance cylinder and a lower die assembly as set forth in claim 1, wherein: at least two guide bolts are uniformly distributed on the cylinder body of the balance cylinder around each plunger.

8. A connecting structure between a balance cylinder and a lower die assembly as set forth in claim 7, wherein: and four guide bolts are uniformly distributed on the cylinder body of the balance cylinder around each plunger.