Welding fixture for vehicle metal part production and machining

Abstract

The invention discloses a welding fixture for producing and processing vehicle metal parts, which comprises a workbench, a rotating groove is formed in the upper end of the workbench, a rotating disc is rotatably connected in the rotating groove, two fixing plates are symmetrically and fixedly mounted at the upper end of the rotating disc, and air cylinders are fixedly mounted on the side walls of the fixing plates; a sliding plate is fixedly installed at the telescopic end of the air cylinder, and a clamping mechanism used for fixing a metal part is arranged on the sliding plate. The side wall of the workbench is provided with a driving mechanism used for driving the rotating disc to rotate. A mounting frame is mounted at the upper end of the workbench through two sets of electric sliding rails. The device is achieved through the motor, the air cylinder, the electric push rod, the electric sliding rail and other automatic elements, manual intervention is reduced, and the labor intensity of operators is reduced. Meanwhile, errors caused by human factors are reduced through automatic operation, the production efficiency and the welding quality are improved, and the safety of the production process is further enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts welding, in particular to a welding fixture for producing and processing vehicle metal parts. Background Art

[0002] In the production and processing of vehicle metal parts, welding is a crucial process, and its welding quality and efficiency directly affect the performance and production cost of vehicle metal parts.

[0003] Currently, existing welding fixtures for vehicle metal parts have relatively limited functionality and numerous limitations during the welding process. For one thing, most welding fixtures only allow the welding head to move in a limited number of directions, typically only performing simple linear motion within a two-dimensional plane, making it difficult to achieve comprehensive three-dimensional weld coverage on metal parts. For some complex vehicle metal parts requiring circumferential welding, existing fixtures cannot meet these requirements, resulting in inconsistent weld quality and difficulty achieving ideal weld results for some welds. This increases the workload for subsequent rework and repair, and reduces production efficiency.

[0004] On the other hand, existing welding fixtures lack flexibility and adaptability when clamping metal parts. Vehicle metal parts of varying sizes and shapes require varying clamping forces and methods, but existing fixtures are often limited to specific types of metal parts. Changing between workpieces requires significant time to adjust and replace the fixture, leading to lengthy changeover times and a significant impact on production flow. Furthermore, existing clamping mechanisms struggle to quickly and securely secure metal parts, making them prone to loosening. This can cause metal parts to shift during welding, compromising welding precision and quality.

[0005] Furthermore, existing welding fixtures have a low degree of automation, requiring significant manual intervention during the welding process, such as manually adjusting the position of the welding head and manually controlling the clamping force. This not only increases the operator's workload but also makes it prone to operational errors due to human factors, leading to unstable welding quality and potentially posing safety risks. Summary of the Invention

[0006] The present invention aims to address the shortcomings of existing technologies by proposing a welding fixture for the production and processing of vehicle metal parts. This fixture utilizes automated components such as a motor, cylinder, electric push rod, and electric slide rails, reducing manual intervention and operator workload. Furthermore, automated operation reduces human error, improves production efficiency and welding quality, and enhances process safety.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A welding fixture for the production and processing of vehicle metal parts comprises a workbench, a rotating groove being defined at the upper end of the workbench, a rotating disc being rotatably connected to the interior of the rotating groove, two fixed plates being symmetrically fixedly mounted on the upper end of the rotating disc, cylinders being fixedly mounted on the side walls of the fixed plates, and sliding plates being fixedly mounted on the telescopic ends of the cylinders, wherein the sliding plates are provided with a clamping mechanism for securing the metal parts; The side wall of the workbench is provided with a driving mechanism for driving the rotating disk to rotate; A mounting frame is installed on the upper end of the workbench through two sets of electric slide rails. A welding head is arranged inside the mounting frame. Two mounting plates are fixedly installed on the upper end of the mounting frame. A reciprocating mechanism for horizontal and linear movement of the welding head is arranged between the two mounting plates.

[0008] As a further improvement of the present invention, the clamping mechanism includes two through holes symmetrically opened on the sliding plate, the interior of the through holes is rotatably connected to a gear, the interior of the through holes is slidably connected to a transverse toothed plate, the transverse toothed plate and the sliding plate are elastically connected by a spring, and a clamping plate is fixedly installed between the two transverse toothed plates; The upper end of the sliding plate is provided with a rectangular hole connected to the through hole, the interior of the rectangular hole is slidably connected to a vertical tooth plate, and the lower end of the vertical tooth plate is fixedly installed with a pressure plate; The horizontal tooth plates and the vertical tooth plates are both meshed with the gears, and the horizontal tooth plates and the vertical tooth plates are arranged alternately.

[0009] As a further improvement of the present invention, the horizontal tooth plate is an L-shaped plate, and the vertical tooth plate is a right-angled U-shaped plate.

[0010] As a further improvement of the present invention, a sliding groove is provided in the middle of the side wall of the clamping plate, and the interior of the sliding groove is slidingly connected to an expansion plate. A rotating arm is provided between the expansion plate and the sliding plate, and the two ends of the rotating arm are respectively rotatably connected to the expansion plate and the sliding plate.

[0011] As a further improvement of the present invention, a sliding sleeve is fixedly installed on the side wall of the pressing plate, and a cross bar is fixedly installed on the side wall of the sliding plate, and the cross bar slides in the sliding sleeve.

[0012] As a further improvement of the present invention, the abutting plate is a convex plate, and the sliding groove and the unfolding plate are both T-shaped structures.

[0013] As a further improvement of the present invention, the driving mechanism includes a first motor fixedly mounted on the side wall of the workbench, a first transmission wheel is fixedly mounted on the output shaft of the first motor, a second transmission wheel is fixedly mounted on the lower end of the rotating disk, and the first transmission wheel and the second transmission wheel are connected by a transmission belt.

[0014] As a further improvement of the present invention, the side wall of the workbench is provided with a rectangular opening connected to the rotating groove, and the transmission belt is located inside the rectangular opening.

[0015] As a further improvement of the present invention, the reciprocating mechanism includes a reciprocating screw rotatably connected between two mounting plates, a screw nut is threadedly connected to the reciprocating screw, an electric push rod is fixedly mounted on the lower end of the screw nut, a connecting plate is fixedly mounted on the lower end of the electric push rod, and the welding head is mounted on the connecting plate; A second motor is fixedly mounted on the side wall of one of the mounting plates, and the second motor is coaxially fixed with the reciprocating screw.

[0016] As a further improvement of the present invention, a strip-shaped sliding opening is provided on the mounting frame, and the lead screw nut is composed of a nut and a T-shaped plate, and the T-shaped plate slides in the strip-shaped sliding opening.

[0017] Compared with the existing technology, the advantages of the present invention are: The first motor drives the rotating disk through the transmission belt, and the two fixed plates on the rotating disk rotate synchronously, allowing the clamped metal parts to rotate. Combined with the linear motion of the welding head, it can achieve full circumferential welding of metal parts, greatly improving the flexibility and efficiency of welding and ensuring the uniformity and integrity of the weld.

[0018] A second motor drives a reciprocating lead screw, whose nut moves horizontally along a strip-shaped slide, driving the welding head to complete linear welding along the X axis. An electric push rod adjusts the Z axis height of the welding head via a connecting plate. An electric slide rail further expands the Y axis position adjustment of the mounting bracket. Through the rotational motion of the X, Y, and Z axes, as well as the rotating disk, the welding head achieves three-dimensional weld coverage within space, meeting the welding needs of various complex vehicle metal parts and improving welding quality and versatility.

[0019] The sliding plate is driven by a cylinder, and the meshing transmission of the horizontal and vertical tooth plates and gears enables the clamping plate and pressure plate to cooperate with each other to form a horizontal clamping force, which can quickly and firmly fix the metal parts. The contact surface of the clamping plate is covered with a non-slip rubber layer to prevent scratches on the surface of the metal part during clamping, further ensuring the stability of the clamping and the quality of the metal part.

[0020] The pressure plate is detachably connected to the vertical tooth plate by bolts, making it easy to replace pressure plates of different shapes to accommodate special-shaped workpieces. This greatly improves the adaptability of the fixture to vehicle metal parts of different specifications and shapes, reduces changeover time, and improves production efficiency. The T-shaped slide groove of the clamping plate cooperates with the expansion plate, and is automatically expanded through the leverage of the rotating arm during the clamping process. The cross bar slides and guides in the sliding sleeve, increasing the contact area between the clamping plate and the metal parts, thereby further improving the stability of the metal parts and ensuring that the metal parts will not shift during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a welding fixture for producing and processing vehicle metal parts proposed by the present invention; Figure 2 This is a side structural schematic diagram of a welding fixture for producing and processing vehicle metal parts proposed by the present invention; Figure 3 This is a bottom-up structural schematic diagram of a rotating disk of a welding fixture for producing and processing vehicle metal parts proposed by the present invention; Figure 4 This is a schematic diagram of the front structure of a clamping mechanism of a welding fixture for producing and processing vehicle metal parts proposed by the present invention; Figure 5 This is a schematic diagram of the back structure of the clamping mechanism of a welding fixture for producing and processing vehicle metal parts proposed by the present invention.

[0022] In the figure: 1 workbench, 2 rotating disk, 3 first motor, 4 first transmission wheel, 5 mounting frame, 6 mounting plate, 7 second motor, 8 reciprocating screw, 9 screw nut, 10 strip slide, 11 connecting plate, 12 electric push rod, 13 welding head, 14 fixed plate, 15 sliding plate, 16 cylinder, 17 reinforcement plate, 18 electric slide rail, 19 second transmission wheel, 20 transmission belt, 21 vertical tooth plate, 22 pressure plate, 23 pressing plate, 24 unfolding plate, 25 sliding sleeve, 26 rotating arm, 27 cross bar, 28 horizontal tooth plate, 29 gear, 30 spring. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0024] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be arbitrarily changed for a welding fixture used in the production and processing of vehicle metal parts, and the component layout may also be more complex.

[0025] While some exemplary embodiments of the present invention have been described for purposes of illustration, it should be understood that the present invention may be implemented in other ways not specifically shown in the drawings.

[0026] Reference Figure 1-Figure 5 A welding fixture for the production and processing of vehicle metal parts includes a workbench 1, a rotating groove is formed at the upper end of the workbench 1, a rotating disk 2 is rotatably connected to the inner portion of the rotating groove, two fixed plates 14 are symmetrically fixedly mounted on the upper end of the rotating disk 2, a cylinder 16 is fixedly mounted on the side wall of the fixed plate 14, and a sliding plate 15 is fixedly mounted on the telescopic end of the cylinder 16; The sliding plate 15 is provided with a clamping mechanism for fixing metal parts. The clamping mechanism includes two through holes symmetrically opened on the sliding plate 15. A gear 29 is rotatably connected inside the through hole. The gear 29 is made of hardened steel and the tooth surface is polished to reduce the friction loss with the horizontal tooth plate 28. The horizontal tooth plate 28 is slidably connected to the inside of the through hole. The horizontal tooth plate 28 and the sliding plate 15 are elastically connected by a spring 30. The spring 30 can maintain the initial state when the clamping plate 23 does not receive any force, and can also reset the clamping plate 23 after the metal part is disassembled. A clamping plate 23 is fixedly installed between the two horizontal tooth plates 28. The contact surface of the clamping plate 23 is covered with a non-slip rubber layer to avoid scratching the surface of the metal part during clamping. A rectangular hole is formed at the upper end of the sliding plate 15 and is connected to the through hole. A vertical tooth plate 21 is slidably connected to the interior of the rectangular hole. A pressure plate 22 is fixedly mounted at the lower end of the vertical tooth plate 21. The pressure plate 22 is detachably connected to the vertical tooth plate 21 by bolts, making it easy to replace pressure plates of different shapes to accommodate special-shaped workpieces. The horizontal tooth plate 28 and the vertical tooth plate 21 are meshed with the gear 29. The horizontal tooth plate 28 and the vertical tooth plate 21 are staggered. The horizontal tooth plate 28 is an L-shaped plate, and the vertical tooth plate 21 is a right-angled U-shaped plate. A sliding groove is provided in the middle of the side wall of the clamping plate 23, and an expansion plate 24 is slidably connected to the inside of the sliding groove. A rotating arm 26 is provided between the expansion plate 24 and the sliding plate 15. The two ends of the rotating arm 26 are rotatably connected to the expansion plate 24 and the sliding plate 15 respectively. A sliding sleeve 25 is fixedly installed on the side wall of the clamping plate 23, and a cross bar 27 is fixedly installed on the side wall of the sliding plate 15. The cross bar 27 slides in the sliding sleeve 25. The clamping plate 23 is a "convex"-shaped plate, and the sliding groove and the expansion plate 24 are both T-shaped structures. The side wall of the workbench 1 is provided with a driving mechanism for driving the rotating disk 2 to rotate. The driving mechanism includes a first motor 3 fixedly mounted on the side wall of the workbench 1. The output shaft of the first motor 3 is fixedly mounted with a first transmission wheel 4. The lower end of the rotating disk 2 is fixedly mounted with a second transmission wheel 19. The first transmission wheel 4 and the second transmission wheel 19 are connected by a transmission belt 20. The side wall of the workbench 1 is provided with a rectangular through-hole connected to the rotating groove, and the transmission belt 20 is located inside the rectangular through-hole. The upper end of the workbench 1 is equipped with a mounting frame 5 through two sets of electric slide rails 18. The electric slide rails 18 adopt ball linear guides. A welding head 13 is provided inside the mounting frame 5. Two mounting plates 6 are fixedly installed on the upper end of the mounting frame 5. A reciprocating mechanism for horizontal linear movement of the welding head 13 is provided between the two mounting plates 6. The reciprocating mechanism includes a reciprocating screw 8 rotatably connected between the two mounting plates 6. A screw nut 9 is threadedly connected to the reciprocating screw 8. A strip sliding opening 10 is opened on the mounting frame 5. The screw nut 9 consists of a nut and a T-plate. The T-plate slides in the strip sliding opening 10. An electric push rod 12 is fixedly installed at the lower end of the electric push rod 12. A connecting plate 11 is fixedly installed at the lower end of the electric push rod 12. The welding head 13 is mounted on the connecting plate 11; A second motor 7 is fixedly mounted on the side wall of one of the mounting plates 6 , and the second motor 7 is coaxially fixed with the reciprocating screw 8 .

[0027] The present invention can illustrate its functional principle through the following operation mode; First, a metal component is placed on rotating disk 2. Cylinder 16 then extends, pushing slide plate 15 toward the metal component. Once abutment plate 23 contacts the metal component, slide plate 15 continues to move, causing horizontal toothed plate 28 to shift relative to slide plate 15, which in turn rotates gear 29. Simultaneously, vertical toothed plate 21, driven by gear 29, moves downward, and pressure plate 22 applies vertical pressure, which, in conjunction with the lateral clamping force of abutment plate 23, secures the metal component.

[0028] During the clamping process, the T-shaped slot of the clamping plate 23 cooperates with the expansion plate 24, and is automatically expanded by the lever action of the rotating arm 26. The crossbar 27 slides in the sliding sleeve 25, playing a guiding role, increasing the contact area between the clamping plate 23 and the metal component, and further improving the stability of the metal component.

[0029] The first motor 3 drives the rotating disk 2 to rotate via the transmission belt 20. The two fixed plates 14 on the rotating disk 2 rotate synchronously, allowing the clamped metal parts to achieve 360° rotation. Combined with the linear motion of the welding head 13, full circumferential welding can be achieved.

[0030] The second motor 7 drives the reciprocating screw 8 to rotate, causing the screw nut 9 to move horizontally along the strip-shaped slide 10, driving the welding head 13 to complete linear welding in the X-axis direction. The screw nut 9 is composed of a nut and a T-shaped plate. The T-shaped plate slides within the strip-shaped slide, ensuring the stability of the welding head movement.

[0031] The electric push rod 12 adjusts the Z-axis height of the welding head 13 through the connecting plate 11, and combined with the rotation of the rotating disk 2, it can achieve spatial three-dimensional weld coverage. In addition, the electric slide rail 18 can further adjust the Y-axis position of the mounting frame 5.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A welding fixture for the production and processing of vehicle metal parts, characterized in that: The invention comprises a workbench (1), wherein a rotating groove is provided at the upper end of the workbench (1), a rotating disk (2) is rotatably connected to the interior of the rotating groove, two fixed plates (14) are symmetrically fixedly mounted on the upper end of the rotating disk (2), a cylinder (16) is fixedly mounted on the side wall of the fixed plate (14), a sliding plate (15) is fixedly mounted on the telescopic end of the cylinder (16), and a clamping mechanism for fixing metal parts is provided on the sliding plate (15); The side wall of the workbench (1) is provided with a driving mechanism for driving the rotating disk (2) to rotate; A mounting frame (5) is mounted on the upper end of the workbench (1) via two sets of electric slide rails (18), a welding head (13) is provided inside the mounting frame (5), two mounting plates (6) are fixedly mounted on the upper end of the mounting frame (5), and a reciprocating mechanism for horizontal linear movement of the welding head (13) is provided between the two mounting plates (6).

2. A welding fixture for producing and processing vehicle metal parts according to claim 1, characterized in that: The clamping mechanism comprises two through holes symmetrically opened on the sliding plate (15), the interior of the through hole being rotatably connected to a gear (29), the interior of the through hole being slidably connected to a transverse toothed plate (28), the transverse toothed plate (28) being elastically connected to the sliding plate (15) via a spring (30), and a clamping plate (23) being fixedly installed between the two transverse toothed plates (28); The upper end of the sliding plate (15) is provided with a rectangular hole connected to the through hole, the interior of the rectangular hole is slidably connected to a vertical tooth plate (21), and the lower end of the vertical tooth plate (21) is fixedly mounted with a pressure plate (22); The horizontal tooth plates (28) and the vertical tooth plates (21) are both meshed with the gears (29), and the horizontal tooth plates (28) and the vertical tooth plates (21) are arranged in an alternating manner.

3. A welding fixture for producing and processing vehicle metal parts according to claim 2, characterized in that: The horizontal tooth plate (28) is an L-shaped plate, and the vertical tooth plate (21) is a right-angled U-shaped plate.

4. A welding fixture for producing and processing vehicle metal parts according to claim 2, characterized in that: A sliding groove is provided in the middle of the side wall of the pressing plate (23), and an expansion plate (24) is slidably connected inside the sliding groove. A rotating arm (26) is provided between the expansion plate (24) and the sliding plate (15), and two ends of the rotating arm (26) are rotatably connected to the expansion plate (24) and the sliding plate (15) respectively.

5. A welding fixture for producing and processing vehicle metal parts according to claim 4, characterized in that: A sliding sleeve (25) is fixedly mounted on the side wall of the pressing plate (23), and a cross bar (27) is fixedly mounted on the side wall of the sliding plate (15). The cross bar (27) is located in the sliding sleeve (25) and slides.

6. The welding fixture for producing and processing vehicle metal parts according to claim 4, characterized in that: The abutting plate (23) is a "convex" shaped plate, and the sliding groove and the unfolding plate (24) are both T-shaped structures.

7. The welding fixture for producing and processing vehicle metal parts according to claim 1, characterized in that: The driving mechanism comprises a first motor (3) fixedly mounted on a side wall of the workbench (1); a first transmission wheel (4) is fixedly mounted on an output shaft of the first motor (3); a second transmission wheel (19) is fixedly mounted on the lower end of the rotating disk (2); and the first transmission wheel (4) and the second transmission wheel (19) are connected via a transmission belt (20).

8. The welding fixture for producing and processing vehicle metal parts according to claim 7, characterized in that: The side wall of the workbench (1) is provided with a rectangular opening connected to the rotation groove, and the transmission belt (20) is located inside the rectangular opening.

9. The welding fixture for producing and processing vehicle metal parts according to claim 1, characterized in that: The reciprocating mechanism comprises a reciprocating screw (8) rotatably connected between two mounting plates (6), a screw nut (9) being threadedly connected to the reciprocating screw (8), an electric push rod (12) being fixedly mounted on the lower end of the screw nut (9), a connecting plate (11) being fixedly mounted on the lower end of the electric push rod (12), and the welding head (13) being mounted on the connecting plate (11); A second motor (7) is fixedly mounted on the side wall of one of the mounting plates (6), and the second motor (7) is coaxially fixed to the reciprocating screw (8).

10. The welding fixture for producing and processing vehicle metal parts according to claim 9, characterized in that: The mounting frame (5) is provided with a strip-shaped sliding opening (10), and the lead screw nut (9) is composed of a nut and a T-shaped plate, and the T-shaped plate is located in the strip-shaped sliding opening (10) and slides.

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