Auxiliary tool for laser welding

Abstract

The utility model discloses an auxiliary tool for laser welding. The auxiliary tool comprises a first bottom plate and a second bottom plate, the second bottom plate is arranged above the first bottom plate; the feeding mechanism is fixedly mounted on the first bottom plate, and the moving end of the feeding mechanism is connected with the second bottom plate; the two supporting plates are vertically arranged on the second bottom plate; the driving motor is mounted on the second bottom plate; one end of the transmission shaft is coaxially connected to a power output shaft of the driving motor, and the other end of the transmission shaft sequentially penetrates through the two supporting plates and is rotatably supported on the two supporting plates; the two first gears are coaxially and fixedly installed on the transmission shaft and arranged on the outer sides of the two supporting plates in a one-to-one correspondence mode. The two clamping mechanisms are rotatably mounted on the two supporting plates respectively; the two second gears are fixedly connected to the two clamping mechanisms in a one-to-one correspondence manner and are engaged with the two first gears in a one-to-one correspondence manner; the two hollow pipes to be welded are installed on the two clamping mechanisms in a one-to-one correspondence mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser welding, and particularly relates to an auxiliary tooling for laser welding. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts in the fields of automobiles, ships, engineering machinery, etc.

[0003] In the prior art, most laser welding is carried out in special CNC machine tools. The auxiliary time for loading and unloading parts is long, the operation is complicated, the focusing is cumbersome, the production efficiency is low, which is not conducive to ensuring the stability of product quality. The product manufacturing cost is extremely high and cannot be widely used. Utility Model Content

[0004] The utility model aims to provide an auxiliary tooling for laser welding, which has a simple structure and can accurately adjust the welding focal length through the cooperation of a feeding mechanism and a driving motor, and ensure the welding depth and welding uniformity.

[0005] The technical solution provided by the utility model is:

[0006] An auxiliary tooling for laser welding, comprising:

[0007] A first bottom plate, which is arranged horizontally;

[0008] A second bottom plate, which is arranged above the first bottom plate and parallel to the first bottom plate;

[0009] A feeding mechanism, which is fixedly mounted on the first bottom plate, and a moving end of the feeding mechanism is connected to the second bottom plate;

[0010] Two support plates are vertically arranged on the second bottom plate, and the two support plates are symmetrically spaced apart;

[0011] a driving motor mounted on the second bottom plate;

[0012] A transmission shaft, one end of which is coaxially connected to the power output shaft of the driving motor, and the other end of which passes through the two support plates in sequence and is rotatably supported on the two support plates;

[0013] Two first gears are coaxially fixedly mounted on the transmission shaft, and the two first gears are arranged on the outer sides of the two support plates in a one-to-one correspondence;

[0014] Two clamping mechanisms, which are rotatably mounted on the two support plates respectively;

[0015] Two second gears, which are fixedly connected to the two clamping mechanisms in a one-to-one correspondence, and the two second gears are meshed with the two first gears in a one-to-one correspondence;

[0016] The two hollow pipes to be welded are mounted on the two clamping mechanisms in a one-to-one correspondence, so that a welding distance is maintained between the two hollow pipes to be welded.

[0017] Preferably, the auxiliary tooling for laser welding further includes: a guide mechanism installed between the first bottom plate and the second bottom plate to ensure that the second bottom plate moves along the feeding direction.

[0018] Preferably, the feeding mechanism adopts an electric cylinder, and the second bottom plate is connected to the top plate of the electric cylinder.

[0019] Preferably, the driving motor is a stepping motor.

[0020] Preferably, the transmission shaft is arranged horizontally and perpendicular to the support plate.

[0021] Preferably, the clamping mechanism adopts a pneumatic rotary pressure head, and the main shaft of the pneumatic rotary pressure head is connected to the support plate through a bearing.

[0022] Preferably, the second gear is mounted on the main shaft of the air compressor rotary pressure head by interference fit.

[0023] Preferably, the guiding mechanism comprises:

[0024] Two slide rails, which are fixedly mounted on the first bottom plate along the feeding direction and are respectively arranged on both sides of the feeding mechanism;

[0025] Two sliding blocks are respectively fixedly connected to the bottom of the second bottom plate and are matched and connected to the two slide rails in a one-to-one correspondence.

[0026] The beneficial effects of the utility model are:

[0027] The auxiliary tooling for laser welding provided by the utility model has a simple structure, can accurately adjust the welding focal length through the cooperation of the feeding mechanism and the driving motor, and can ensure the welding depth and welding uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1This is a schematic diagram of the overall structure of the auxiliary tooling for laser welding described in the utility model.

[0029] Figure 2 This is a front view of the auxiliary tooling for laser welding described in the utility model. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0031] like Figure 1-2 As shown, the utility model provides an auxiliary tooling for laser welding, which includes a first base plate 110, a second base plate 120, a feeding mechanism 130, a support plate 140, a driving motor 150, a transmission shaft 160, a first gear 170, a clamping mechanism 180 and a second gear 190.

[0032] The first bottom plate 110 is arranged horizontally, and the second bottom plate 120 is arranged above the first bottom plate 110 and parallel to the first bottom plate 110. The feeding mechanism 130 is fixedly mounted on the first bottom plate 110, and the moving end of the feeding mechanism 130 is connected to the second bottom plate 120.

[0033] The two support plates 140 are vertically arranged on the second bottom plate 120 , and the two support plates 140 are symmetrically arranged at intervals. The bottom of the support plate 140 is fixedly connected to the second bottom plate 120 .

[0034] The driving motor 120 is fixedly mounted on the second base plate 120 by bolts. One end of the transmission shaft 160 is coaxially connected to the power output shaft of the driving motor 150 through a connecting piece, and the other end passes through the two support plates 140 in sequence and is rotatably supported on the two support plates 140. The transmission shaft 160 is horizontally arranged and perpendicular to the support plates 140.

[0035] The two first gears 170 are coaxially fixedly mounted on the transmission shaft 160, and the two first gears 170 are arranged on the outer sides of the two support plates 140 in a one-to-one correspondence. The two clamping mechanisms 180 are rotatably mounted on the two support plates 140. The two second gears 190 are fixedly connected to the two clamping mechanisms 180 in a one-to-one correspondence, and the two second gears 190 are meshed and driven with the two first gears 170 in a one-to-one correspondence. The clamping parts of the two clamping mechanisms 180 are respectively located on the inner sides of the two support plates 140, and the two clamping mechanisms 180 are symmetrically arranged.

[0036] The two hollow pipes 200 to be welded are mounted on the two clamping mechanisms 180 in a one-to-one correspondence, so that a welding distance is maintained between the two hollow pipes 200 to be welded.

[0037] In order to ensure the stable operation of the feeding mechanism 130, a guiding mechanism is also provided, which is installed between the first bottom plate 110 and the second bottom plate 120 to ensure that the second bottom plate 120 moves along the feeding direction.

[0038] In this embodiment, the guide mechanism 210 includes: two slide rails 211, which are fixedly mounted on the first bottom plate 110 along the feeding direction, and the two slide rails 211 are respectively arranged on both sides of the feeding mechanism 130. And two sliders 212, which are respectively fixedly connected to the bottom of the second bottom plate 120, and the two sliders 212 are matched and connected to the two slide rails 211 in a one-to-one correspondence.

[0039] As a preference, the feeding mechanism 130 adopts an electric cylinder, which is fixedly connected to the first bottom plate 110 by bolts, and the second bottom plate 120 is connected to the top plate of the electric cylinder.

[0040] As a further preference, the driving motor 150 is a stepping motor.

[0041] As a further preference, the clamping mechanism 180 adopts an air-compressed rotary pressure head, and the main shaft 181 of the air-compressed rotary pressure head is connected to the support plate 140 through a bearing. The chuck 182 of the air-compressed rotary pressure head is installed at one end of the main shaft 181 located on the inner side of the support plate 140, and the other end of the main shaft 181 of the air-compressed rotary pressure head is located on the outer side of the support plate 140; the second gear 190 is installed on the end of the main shaft 181 of the air-compressed rotary pressure head located on the outer side of the support plate 140 through an interference fit. Among them, an air pipe connecting part 183 is sleeved on the main shaft of the clamping mechanism 180, and an air pipe interface is provided on the air pipe connecting part; the main shaft 181 and the chuck 182 can rotate synchronously, and the air pipe connecting part 183 does not rotate with it. The clamping or loosening of the chuck 182 is achieved by adjusting the air pressure.

[0042] The working process of the auxiliary tooling for laser welding is as follows: one end of the workpiece to be welded (hollow tube material 200) is placed into the chuck 182. Turn on the start switch, and the increased air pressure drives the chuck 182 to clamp and position. The push rod of the feed mechanism 130 extends and moves to the specified welding head needle position to achieve automatic welding focal length adjustment. The welding machine runs welding, and at the same time, the drive motor 150 drives the first gear 170 on the transmission shaft 160 to engage with the second gear 190 on the main shaft 181 for power transmission, and rotates at a constant speed at a specified speed. After welding is completed, the push rod of the feed mechanism 130 retracts and leaves the welding position. The drive motor 150 stops, and the chuck 182 releases the workpiece. The workpiece to be welded is taken out of the chuck 182, and the next workpiece to be welded is placed.

[0043] The auxiliary tooling for laser welding provided by the utility model has a simple structure and is convenient for clamping workpieces. It is used in conjunction with a laser welding machine, and the welding head needle automatically adjusts the focal length by accurately adjusting the welding height. At the same time, the stepper motor is used to rotate at a precise angle to achieve uniform feeding of the welded part (hollow pipe material 200), ensure welding depth and welding uniformity, effectively avoid defects such as cold welding and uneven welding during welding, reduce process waste, and improve product quality. At the same time, it can be combined with an automatic operation program and connected to welding equipment to realize the upgrading and transformation of automated equipment. It can greatly reduce the difficulty of manufacturing and maintenance of products, effectively control product costs, and facilitate wide application.

[0044] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An auxiliary tooling for laser welding, characterized in that: include: A first bottom plate, which is arranged horizontally; A second bottom plate, which is arranged above the first bottom plate and parallel to the first bottom plate; A feeding mechanism, which is fixedly mounted on the first bottom plate, and a moving end of the feeding mechanism is connected to the second bottom plate; Two support plates are vertically arranged on the second bottom plate, and the two support plates are symmetrically spaced apart; a driving motor mounted on the second bottom plate; A transmission shaft, one end of which is coaxially connected to the power output shaft of the driving motor, and the other end of which passes through the two support plates in sequence and is rotatably supported on the two support plates; Two first gears are coaxially fixedly mounted on the transmission shaft, and the two first gears are arranged on the outer sides of the two support plates in a one-to-one correspondence; Two clamping mechanisms, which are rotatably mounted on the two support plates respectively; Two second gears, which are fixedly connected to the two clamping mechanisms in a one-to-one correspondence, and the two second gears are meshed with the two first gears in a one-to-one correspondence; The two hollow pipes to be welded are mounted on the two clamping mechanisms in a one-to-one correspondence, so that a welding distance is maintained between the two hollow pipes to be welded.

2. The auxiliary tooling for laser welding according to claim 1, characterized in that: Also includes: A guide mechanism is installed between the first bottom plate and the second bottom plate to ensure that the second bottom plate moves along a feeding direction.

3. The auxiliary tooling for laser welding according to claim 2, characterized in that: The feeding mechanism adopts an electric cylinder, and the second bottom plate is connected to the top plate of the electric cylinder.

4. The auxiliary tooling for laser welding according to claim 3, characterized in that: The driving motor is a stepping motor.

5. The auxiliary tooling for laser welding according to claim 4, characterized in that: The transmission shaft is arranged horizontally and is perpendicular to the support plate.

6. The auxiliary tooling for laser welding according to any one of claims 2 to 5, characterized in that: The clamping mechanism adopts an air-compressed rotary pressure head, and the main shaft of the air-compressed rotary pressure head is connected to the support plate through a bearing.

7. The auxiliary tooling for laser welding according to claim 6, characterized in that: The second gear is mounted on the main shaft of the air compressor rotary pressure head through interference fit.

8. The auxiliary tooling for laser welding according to claim 7, characterized in that: The guiding mechanism comprises: Two slide rails, which are fixedly mounted on the first bottom plate along the feeding direction and are respectively arranged on both sides of the feeding mechanism; Two sliding blocks are respectively fixedly connected to the bottom of the second bottom plate and are matched and connected to the two slide rails in a one-to-one correspondence.

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