Automobile body welding positioning clamp

Abstract

The utility model discloses an automobile body welding positioning clamp which comprises an installation base and a first motor, the upper surface of the installation base is fixedly connected with a guide sleeve, a hydraulic cylinder is fixedly installed on the upper surface of the installation base, the output end of the hydraulic cylinder is fixedly connected with a box body, the bottom face of the box body is fixedly connected with a guide rod, and the box body is rotationally connected with the outer side of a rotary drum. The outer side of the rotating cylinder is fixedly connected with the driven gear, one end of the first motor is fixedly connected with the two-way lead screw, a second motor is fixedly installed in the box body, the output end of the second motor is fixedly connected with the driving gear, and a moving block is arranged in the rotating cylinder. Height adjustment of the contact plate is achieved through pushing of the hydraulic cylinder, the moving block drives the contact plate to move through rotation of the two-way lead screw so that automobile bodies of different sizes can be adsorbed and fixed conveniently, and the automobile bodies of different sizes can be adsorbed and fixed conveniently by adjusting the position of the moving plate; the automobile body is attracted and fixed through magnetic force generated by the electrified coil, and indentation and scratching are avoided in the fixing process.

Description

Technical Field

[0001] This utility model relates to the field of automotive welding technology, specifically to an automotive body welding positioning fixture. Background Technology

[0002] Automotive body components are mainly made of cold-rolled steel sheet stamping parts with good stamping and welding processability, which are assembled and welded. They are mostly produced by assembly line operation, with a high degree of mechanization and automation, and a large number of special equipment and tooling fixtures are used.

[0003] During the processing or repair of car bodies, automotive clamps are needed to hold and fix the car body in order to facilitate welding work. However, the existing automotive clamps have relatively limited functions, and the angle and position of the clamping blocks are not easy to adjust. In addition, traditional clamping often causes indentations or even scratches on the car body, which can affect the quality of the car body and cause property damage. Utility Model Content

[0004] The purpose of this invention is to provide an automotive body welding positioning fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding positioning fixture for automobile bodies, comprising a mounting base and a motor, wherein the upper surface of the mounting base is fixedly connected to a guide sleeve, a hydraulic cylinder is fixedly mounted on the upper surface of the mounting base, the output end of the hydraulic cylinder is fixedly connected to a housing, the bottom surface of the housing is fixedly connected to a guide rod, the housing is rotatably connected to the outside of a rotating drum, the outside of the rotating drum is fixedly connected to a driven gear, one end of the motor is fixedly connected to a bidirectional lead screw, a second motor is fixedly mounted inside the housing, the output end of the second motor is fixedly connected to a drive gear, a moving block is provided inside the rotating drum, the top of the moving block is fixedly connected to a telescopic rod, the output end of the telescopic rod is fixedly connected to a housing, an energized coil is provided inside the housing, one side of the housing is fixedly connected to a contact plate, and a pressure sensor is provided on the side of the contact plate.

[0006] Preferably, the bottom of the guide sleeves on both sides of the mounting base are fixedly connected, the inside of the guide sleeve is slidably engaged with the outside of the guide rod, the box and the guide rod are symmetrically distributed on both sides of the mounting base, and the two ends of the rotating cylinder are rotatably connected to the box respectively.

[0007] Preferably, a rectangular through hole is provided on the outer side of the rotating cylinder, and the rotating cylinder slides with the outer side of the moving block through the rectangular through hole. The moving block is a T-shaped block.

[0008] Preferably, one end of the rotating drum extends into the housing and is fixedly connected to the driven gear. Both the driven gear and the driving gear are bevel gears, and the outer side of the driving gear meshes with the driven gear.

[0009] Preferably, the two sides of the bidirectional lead screw are provided with opposite threads, the moving blocks are symmetrically distributed on both sides of the bidirectional lead screw, the moving blocks have threaded holes on their sides, and the moving blocks are threaded to the outer side of the bidirectional lead screw through the threaded holes.

[0010] Preferably, the energized coil is located inside the housing, the contact plate is bonded and fixed to the side of the housing, the housing is made of rubber, and the pressure sensor is located between the housing and the contact plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention uses a hydraulic cylinder to move the housing up and down, thereby adjusting the height of the contact plate. This facilitates moving the car body to the target height for welding. A motor rotates a bidirectional lead screw, causing the moving blocks on both sides to move the contact plate simultaneously. Adjusting the position of the moving plate allows for the attachment and fixing of car bodies of different sizes. The motor also drives a drive gear to rotate a driven gear and a rotating drum, enabling angle adjustment of the car body and enhancing the flexibility of car body welding.

[0013] This invention also uses a telescopic rod to move the contact plate, avoiding the instability of clamping the curved surface of the car body caused by the two contact plates being on the same plane. At the same time, the magnetic force generated by the energized coil is used to attract the car body to the contact plate, and the pressure sensor is used to detect the pressure of the contact plate. Since the contact plate is made of rubber, it avoids the car body from having indentations or scratches on the car body surface during fixing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the internal structure of the rotating drum of this utility model;

[0017] Figure 4 This is a cross-sectional view of the internal structure of the shell of this utility model.

[0018] In the diagram: 1. Mounting base; 2. Guide sleeve; 3. Hydraulic cylinder; 4. Housing; 5. Guide rod; 6. Rotary drum; 7. Driven gear; 8. Motor 1; 9. Double-acting lead screw; 10. Motor 2; 11. Drive gear; 12. Moving block; 13. Telescopic rod; 14. Housing; 15. Energizing coil; 16. Contact plate; 17. Pressure sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: an automotive body welding positioning fixture, including a mounting base 1 and a motor 8. The upper surface of the mounting base 1 is welded and fixed to several symmetrically arranged guide sleeves 2. The upper surface of the mounting base 1 is connected and fixed to a hydraulic cylinder 3 by bolts. The output end of the hydraulic cylinder 3 is welded and fixed to a housing 4. The bottom surface of the housing 4 is welded and fixed to two symmetrical guide rods 5. The inside of the guide sleeves 2 slides against the outside of the guide rods 5. The housing 4 and guide rods 5 are symmetrically distributed on both sides of the mounting base 1. The hydraulic cylinder 3 causes the housing 4 to move up and down, realizing the height adjustment of the housing 4 and the contact plate 16. This facilitates the downward movement of the contact plate 16 to fit against the automotive body and allows the contact plate 16 to adsorb the car body onto the surface of the mounting base 1. The cooperation of the guide sleeves 2 and guide rods 5 ensures the stability of the rotating drum 6 during lifting.

[0021] The housing 4 is rotatably connected to the outside of the rotating cylinder 6. One end of the rotating cylinder 6 extends into the housing 4 and is welded and fixed to the driven gear 7. One end of the motor 8 is welded and fixed to the double-acting lead screw 9. The inside of the housing 4 is connected and fixed to the motor 10 via bolts. A rectangular through hole is opened on the outside of the rotating cylinder 6. The rotating cylinder 6 slides with the outside of the moving block 12 through the rectangular through hole. The moving block 12 is a T-shaped block. The rectangular through hole on the outside of the rotating cylinder 6 ensures the stability of the horizontal movement of the moving block 12 and prevents the moving block 12 from deflecting and affecting the movement of the contact plate 16.

[0022] The output end of motor 10 is welded and fixed to drive gear 11. Both driven gear 7 and drive gear 11 are bevel gears. The outer side of drive gear 11 meshes with driven gear 7. The two-way lead screw 9 has opposite threads on both sides. Moving blocks 12 are symmetrically distributed on both sides of the two-way lead screw 9. Threaded holes are opened on the side of moving blocks 12. Moving blocks 12 are threaded to the outer side of the two-way lead screw 9 through the threaded holes.

[0023] The top of the movable block 12 is welded and fixed to the telescopic rod 13. The output end of the telescopic rod 13 is welded and fixed to the housing 14. An energized coil 15 is installed inside the housing 14. One side of the housing 14 is connected and fixed to the contact plate 16. A pressure sensor 17 is installed on the side of the contact plate 16. The motor 8 causes the bidirectional lead screw 9 to rotate, which in turn moves the movable blocks 12 on both sides outside the bidirectional lead screw 9, thereby adjusting the horizontal position of the contact plates 16 on both sides. This facilitates the adsorption and fixation of car bodies of different lengths and sizes.

[0024] The energized coil 15 is located inside the housing 14. The contact plate 16 is bonded and fixed to the side of the housing 14. The housing 14 is made of rubber. The pressure sensor 17 is located between the housing 14 and the contact plate 16. When the energized coil 15 is energized, it generates a magnetic force, which attracts the car body. This avoids the indentation that can easily occur when using clamps on both sides to hold and fix the car body. At the same time, the magnetic force generated by the energized coil 15 effectively reduces the clamping area when fixing the car body, thereby avoiding the possibility of the clamps affecting the welding of the car body.

[0025] Working Principle: During use, the car body to be welded is placed on the mounting base 1. The height of the housing 4 is adjusted by the hydraulic cylinder 3. The second motor 10 drives the drive gear 11 to rotate the rotating drum 6 and the driven gear 7, thereby adjusting the angle of the contact plate 16 until it is in contact with the car body to be welded. Then, the magnetic force generated by the energized coil 15 is used to attract and fix the car body to the contact plate 16. The rubber layer of the contact plate 16 itself acts as a buffer to avoid indentation on the car body surface. The pressure sensor 17 detects the pressure on the car body to prevent the two contact plates 16 from being on the same plane or bending due to excessive suction. The first motor 8 rotates the double-acting screw 9, and the moving blocks 12 on both sides move outside the double-acting screw 9 to adjust the horizontal position of the two contact plates 16. This makes it easy to attract and fix car bodies of different lengths and sizes. Then, the second motor 10 drives the drive gear 11 to rotate the rotating drum 6 and the driven gear 7, which can achieve the flipping of the car body and improve the flexibility of car body welding.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding positioning fixture for automobile bodies, comprising a mounting base (1) and a motor (8), characterized in that: The upper surface of the mounting base (1) is fixedly connected to the guide sleeve (2). A hydraulic cylinder (3) is fixedly installed on the upper surface of the mounting base (1). The output end of the hydraulic cylinder (3) is fixedly connected to the housing (4). The bottom surface of the housing (4) is fixedly connected to the guide rod (5). The housing (4) is rotatably connected to the outside of the rotating drum (6). The outside of the rotating drum (6) is fixedly connected to the driven gear (7). One end of the motor (8) is fixedly connected to the double-acting screw (9). A hydraulic cylinder (3) is fixedly installed inside the housing (4). Motor 2 (10), the output end of which is fixedly connected to the drive gear (11), a moving block (12) is provided inside the rotating drum (6), the top of the moving block (12) is fixedly connected to the telescopic rod (13), the output end of the telescopic rod (13) is fixedly connected to the housing (14), an energized coil (15) is provided inside the housing (14), one side of the housing (14) is fixedly connected to the contact plate (16), and a pressure sensor (17) is provided on the side of the contact plate (16).

2. The automotive body welding positioning fixture according to claim 1, characterized in that: The bottom of the uniform guide sleeves (2) on both sides of the mounting base (1) is fixedly connected. The inside of the guide sleeve (2) is slidably engaged with the outside of the guide rod (5). The box body (4) and the guide rod (5) are symmetrically distributed on both sides of the mounting base (1). The two ends of the rotating cylinder (6) are rotatably connected to the box body (4).

3. The automotive body welding positioning fixture according to claim 1, characterized in that: A rectangular through hole is provided on the outer side of the rotating cylinder (6), and the rotating cylinder (6) slides with the outer side of the moving block (12) through the rectangular through hole. The moving block (12) is a T-shaped block.

4. The automotive body welding positioning fixture according to claim 1, characterized in that: One end of the rotating drum (6) extends into the housing (4) and is fixedly connected to the driven gear (7). Both the driven gear (7) and the driving gear (11) are bevel gears. The outer side of the driving gear (11) is meshed with the driven gear (7).

5. The automotive body welding positioning fixture according to claim 1, characterized in that: The two-way lead screw (9) has opposite threads on both sides, and the moving blocks (12) are symmetrically distributed on both sides of the two-way lead screw (9). The moving blocks (12) have threaded holes on their sides, and the moving blocks (12) are threaded to the outer side of the two-way lead screw (9) through the threaded holes.

6. The automotive body welding positioning fixture according to claim 1, characterized in that: The energized coil (15) is located inside the housing (14), the contact plate (16) is bonded and fixed to the side of the housing (14), the housing (14) is made of rubber, and the pressure sensor (17) is located between the housing (14) and the contact plate (16).

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