Auxiliary positioning device for welding oil nozzle of oil cylinder

Abstract

The utility model relates to the technical field of oil cylinder welding, in particular to an oil cylinder oil nozzle welding auxiliary positioning device which comprises a supporting frame, a supporting rod, a positioning box and a movable pin shaft, the positioning box is connected with the supporting frame through the supporting rod, the movable pin shaft is arranged in the positioning box, a compression spring is arranged below the movable pin shaft, and meanwhile an air inlet hole is formed in the upper portion of the positioning box. The upper portion of the positioning box is fixedly connected with the sealing cover through bolts. The utility model has the advantages that: 1, mechanical positioning is used, so that the oil cylinder main body is prevented from adsorbing filings; secondly, a lateral positioning mechanism is arranged, so that the oil cylinder main body is prevented from loosening due to overlength; thirdly, the positioning pin can retract, so that the working efficiency is improved; automation can be achieved, personnel injury is avoided, and efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinder welding, in particular to an auxiliary positioning device for oil cylinder nozzle welding. Background Art

[0002] Hydraulic cylinder is one of the more mature products in my country's hydraulic products. The industry has maintained rapid growth for many years. Hydraulic cylinder is the most important component of engineering machinery. Its function is to convert hydraulic energy into mechanical energy. Hydraulic cylinder is basically composed of cylinder barrel and cylinder head, piston and piston rod, sealing device, buffer device and exhaust device. The oil nozzle needs to be welded on the cylinder barrel. Due to the arc surface characteristics of the cylinder barrel and the flat characteristics of the bottom of the oil nozzle, in the actual welding process, the cylinder barrel and the oil nozzle need to be assisted in positioning before welding. Accurate positioning is very difficult to achieve, which affects production efficiency and product quality.

[0003] For example, the patent number CN201320722147.2 is a magnetic auxiliary positioning device for welding a hydraulic cylinder nozzle, which includes a cylinder, a handle, a curved body, a magnet block, a base, a nut, a nozzle and a nozzle through hole. The cylinder of the hydraulic cylinder nozzle welding positioning device passes through the circular hole of the cylinder from the inside to the outside, and the nozzle is placed on the cylinder. Under the action of the magnet block, the curved body is pressed against the inner surface of the cylinder, thereby achieving the effect of accurate positioning and welding of the nozzle and the outer surface of the cylinder.

[0004] However, there are several problems: first, relying on strong magnets to hold the oil cylinder will cause the cylinder body to be magnetic and easily absorb iron cuttings; second, when the cylinder body is long, the strong magnetic adsorption will be unstable, the cylinder body will become loose, and cause welding deviations; third, the cylinder cannot be retracted, and attention must be paid to the cylinder when placing and removing it, which is inconvenient and affects work efficiency. Utility Model Content

[0005] The utility model aims to provide a cylinder nozzle welding auxiliary positioning 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 cylinder nozzle welding auxiliary positioning device, characterized in that: the cylinder nozzle welding auxiliary positioning device comprises a support frame 1, a support rod 3, a positioning box 11 and a movable pin 9, the positioning box 11 is connected to the support frame 1 through the support rod 3, the movable pin 9 is arranged in the positioning box 11, a compression spring 10 is arranged below the movable pin 9, and an air inlet hole 4 is arranged above the positioning box 11, and the top of the positioning box 11 is fixedly connected to the sealing cover 8 by bolts.

[0007] Preferably, a cylinder 5 is provided at the upper left end of the support frame 1, and a clamping claw 6 is fixedly connected to the front end of the cylinder 5.

[0008] Preferably, replaceable lateral positioning blocks 12 are provided on both sides of the positioning box 11 .

[0009] Preferably, the movable pin 9 and the sealing cover 8 are both provided with sealing rings.

[0010] Preferably, the distance between the top ends of the lateral positioning blocks 12 is the same as the inner diameter of the cylinder body 2 .

[0011] Compared with the prior art, the beneficial effects of the utility model are: first, mechanical positioning is used to prevent the cylinder body from absorbing iron chips; second, a lateral positioning mechanism is provided to prevent the cylinder body from being too long and loose; third, the positioning pin can be retracted to improve work efficiency; fourth, automation can be achieved to avoid personal injury and improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 Middle K-axis view.

[0014] In the figure: 1. support frame; 2. oil cylinder body; 3. support rod; 4. air inlet hole; 5. cylinder; 6. clamping claw; 7. oil nozzle; 8. sealing cover; 9. movable pin shaft; 10. compression spring; 11. positioning box; 12. lateral positioning block. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-2 The utility model provides a technical solution: an auxiliary positioning device for welding an oil cylinder nozzle, comprising a support frame 1, a support rod 3, a positioning box 11 and a movable pin 9. The positioning box 11 is connected to the support frame 1 through the support rod 3. The movable pin 9 is arranged in the positioning box 11. A compression spring 10 is arranged below the movable pin 9. At the same time, an air inlet hole 4 is arranged above the positioning box 11. The top of the positioning box 11 is fixedly connected to the sealing cover 8 by bolts. The movable pin 9 and the sealing cover 8 are both provided with sealing rings.

[0017] Replaceable lateral positioning blocks 12 are provided on both sides of the positioning box 11, and the distance between the top ends of the lateral positioning blocks 12 is the same as the inner diameter of the cylinder body 2, so as to better fix and position the cylinder body 2 to avoid loosening.

[0018] A cylinder 5 is provided at the upper left end of the support frame 1 , and a clamping claw 6 is fixedly connected to the front end of the cylinder 5 , so that the oil nozzle 7 can be automatically sent to the welding position above the oil cylinder body 2 .

[0019] The specific working principle is as follows:

[0020] First, send the cylinder body 2 to the positioning box 11, then the cylinder 5 works to drive the clamp 6 to drive the oil nozzle 7 to the specified position, then the air inlet 4 stops taking in air, and the compression spring 10 drives the movable pin 9 to move upward to achieve the positioning of the cylinder body 2 and the oil nozzle 7, then the cylinder 5 retracts, the clamp 6 clamps the next oil nozzle 7, and welds the cylinder body 2 and the oil nozzle 7 at the same time. After welding is completed, the air inlet 4 starts to take in air, the movable pin 9 moves downward, and the welded cylinder body 2 is taken out, and then the above actions are repeated.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary positioning device for oil cylinder nozzle welding, characterized in that: The oil cylinder nozzle welding auxiliary positioning device comprises a support frame (1), a support rod (3), a positioning box (11) and a movable pin (9), wherein the positioning box (11) is connected to the support frame (1) via the support rod (3), the movable pin (9) is arranged in the positioning box (11), a compression spring (10) is arranged below the movable pin (9), and an air inlet hole (4) is arranged above the positioning box (11), and the top of the positioning box (11) is fixedly connected to a sealing cover (8) via bolts.

2. The auxiliary positioning device for oil cylinder nozzle welding according to claim 1, characterized in that: A cylinder (5) is provided at the upper left end of the support frame (1), and a clamping claw (6) is fixedly connected to the front end of the cylinder (5).

3. The auxiliary positioning device for oil cylinder nozzle welding according to claim 1, characterized in that: Both sides of the positioning box (11) are provided with replaceable lateral positioning blocks (12).

4. The auxiliary positioning device for oil cylinder nozzle welding according to claim 1, characterized in that: The movable pin shaft (9) and the sealing cover (8) are both provided with sealing rings.

5. The auxiliary positioning device for oil cylinder nozzle welding according to claim 3 is characterized in that: The distance between the top ends of the lateral positioning blocks (12) is the same as the inner diameter of the oil cylinder body (2).

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