Oil press protection device

Abstract

The utility model relates to the technical field of oil presses, in particular to an oil press protection device which comprises a bearing platform, a cross beam, a pressing block and side baffles arranged on the two sides, the side baffles are arranged on linear rails above the bearing platform, an oil cylinder is arranged above the cross beam and connected with the pressing block, and idler wheels are arranged on the two sides of the pressing block. The push rod slides in a buffering inner cylinder in the buffering seat support, the buffering inner cylinder is sealed through a sealing cover, and meanwhile a compression spring is arranged between the sealing cover and the side baffle. The oil press has the advantages that when the oil press works, the side baffle is in a retracted state, the pressing block is prevented from making contact with the side baffle, and the working stability and safety of the oil press are improved; and secondly, the reciprocating motion of the spring is avoided, and the service life of the spring is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of oil hydraulic presses, in particular to a protective device for an oil hydraulic press. Background Art

[0002] When the hydraulic press is in use, the working part processes the workpiece by reducing the distance between the movable crossbeam and the bottom worktable. Therefore, the movable crossbeam and the bottom worktable are dangerous. When removing and placing workpieces, maintaining and inspecting the working part, etc., if the equipment loses control or the internal seals suddenly fail, the movable crossbeam and the bottom worktable will be close to each other, posing a safety risk to the staff.

[0003] For example, patent number CN202120023489.X discloses a protective device for a hydraulic press, comprising a machine platform, a base fixedly connected to the upper portion of the machine platform, side baffles fixedly mounted vertically upward on the left and right sides of the upper portion of the base, a hydraulic press fixedly mounted on the upper portion of the machine platform, and a horizontally fixed beam mounted on the upper portion of the hydraulic press. The utility model has guide wheels fixedly mounted on both the left and right ends of the beam, and rollers fixedly mounted on the bottom of the movable support platform, thereby ensuring low wear of the rollers when they are moved on the base. The above two combinations can prevent the beam from falling and ensure that no harsh noise caused by friction occurs under the guidance of the guide wheels.

[0004] However, this structure has the following defects: first, when in working state, the side baffle will always be in contact with the pressure block. If the side baffle is stuck, the pressure block of the hydraulic press may not be pressed into place, resulting in the workpiece being unable to be formed; second, the spring on one side of the side baffle is always in a reciprocating motion state, which reduces the service life of the spring. Utility Model Content

[0005] The purpose of the present utility model is to provide a hydraulic press protection device to solve the problems existing in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic press protection device, comprising a base, a crossbeam, a pressure block and side baffles arranged on both sides, the side baffles being arranged on the linear rail above the base, an oil cylinder being provided above the crossbeam and connected to the pressure block, rollers being provided on both sides of the pressure block, and characterized in that one side of the side baffle is fixedly connected to the push rod, and the push rod slides in the buffer inner cylinder in the buffer seat bracket, and the buffer inner cylinder is sealed by a sealing cover, and a compression spring is provided between the sealing cover and the side baffle.

[0007] Preferably, an oil inlet pipe is provided below the end of the buffer seat bracket connected to the sealing cover, and an oil outlet is provided above the end of the buffer seat bracket away from the sealing cover.

[0008] Preferably, the oil inlet pipeline passes through the base, and the oil outlet is connected to the oil inlet of the oil cylinder through a pipeline, and a one-way valve is provided between the pipelines.

[0009] Preferably, the distance between the oil outlet and the bottom surface of the buffer inner cylinder is greater than the thickness of the push rod boss.

[0010] Compared with the existing technology, the beneficial effects of the present invention are: first, when the hydraulic press is working, the side baffle is in a retracted state, which avoids contact between the pressure block and the side baffle, and improves the stability and safety of the hydraulic press; second, it avoids the reciprocating motion of the spring, greatly improving the service life of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the present utility model.

[0012] In the figure: 1. Oil inlet pipe; 2. Base; 3. Buffer seat bracket; 4. Buffer inner cylinder; 5. Push rod; 6. Oil outlet; 7. Sealing cover; 8. Compression spring; 9. Roller; 10. Oil cylinder; 11. Crossbeam; 12. Pressure block; 13. Side baffle; 14. Linear rail. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] See also Figure 1 The utility model provides a technical solution: a hydraulic press protection device, including a base 2, a crossbeam 11, a pressure block 12 and side baffles 13 arranged on both sides, the side baffles 13 are arranged on the linear rail 14 above the base 2, an oil cylinder 10 is provided above the crossbeam 11 and is connected to the pressure block 12, and rollers 9 are provided on both sides of the pressure block 12.

[0015] One side of the side baffle 13 is fixedly connected to the push rod 5, and the push rod 5 slides in the buffer inner cylinder 4 in the buffer seat bracket 3, and the buffer inner cylinder 4 is sealed by the sealing cover 7. At the same time, a compression spring 8 is provided between the sealing cover 7 and the side baffle 13. An oil inlet pipe 1 is provided below the end where the buffer seat bracket 3 is connected to the sealing cover 7, and an oil outlet 6 is provided above the end of the buffer seat bracket 3 away from the sealing cover 7. The oil inlet pipe 1 passes through the base 2, and the oil outlet 6 is connected to the oil inlet of the cylinder 10 through a pipe. At the same time, the distance between the oil outlet 6 and the bottom surface of the buffer inner cylinder 4 is greater than the thickness of the boss of the push rod 5.

[0016] The specific working principle is as follows:

[0017] When the hydraulic press is working, oil enters from the oil inlet pipe 1 and pushes the push rod 5 toward the bottom of the buffer inner cylinder 4, that is, pulling the side baffle 13 away from the pressure block 12. When it contacts the bottom surface, the oil enters the oil cylinder 10 from the oil outlet 6. Since a one-way valve is provided between the two, the oil is prevented from entering from the oil outlet 6 when the oil cylinder 10 is extended and retracted, causing the side baffle 13 to rebound. When the hydraulic press loses hydraulic power, there is no pressure at the oil inlet pipe 1. Under the action of the compression spring 8, the side baffle 13 leans against the pressure block 12 to prevent the pressure block 12 from falling suddenly, thereby protecting the safety of the hydraulic press.

[0018] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic press protection device, comprising a support (2), a crossbeam (11), a pressure block (12) and side baffles (13) provided on both sides, wherein the side baffles (13) are provided on a linear rail (14) above the support (2), an oil cylinder (10) is provided above the crossbeam (11) and is connected to the pressure block (12), and rollers (9) are provided on both sides of the pressure block (12), characterized in that: One side of the side baffle (13) is fixedly connected to the push rod (5), and the push rod (5) slides in the buffer inner cylinder (4) in the buffer seat bracket (3), and the buffer inner cylinder (4) is sealed by the sealing cover (7). At the same time, a compression spring (8) is provided between the sealing cover (7) and the side baffle (13).

2. The hydraulic press protection device according to claim 1, characterized in that: An oil inlet pipe (1) is provided below one end of the buffer seat bracket (3) connected to the sealing cover (7), and an oil outlet (6) is provided above one end of the buffer seat bracket (3) away from the sealing cover (7).

3. The hydraulic press protection device according to claim 2, characterized in that: The oil inlet pipeline (1) passes through the support platform (2), and the oil outlet (6) is connected to the oil inlet of the oil cylinder (10) through a pipeline, and a one-way valve is provided between the pipelines.

4. The hydraulic press protection device according to claim 2, characterized in that: The distance between the oil outlet (6) and the bottom surface of the buffer inner cylinder (4) is greater than the thickness of the boss of the push rod (5).

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