Metal piece welding fixing device

Abstract

The application discloses a metal piece welding fixing device, and particularly relates to the technical field of metal piece welding, wherein the lateral clamping unit is extended to the longest, and the vertical supporting bars are clamped, the longitudinal clamping unit clamps the horizontal supporting bars, the vertical supporting bars and the horizontal supporting bars keep accurate relative positions, the horizontal supporting bars reach the ends of the L-shaped steels, the fixed bottom plates on both sides are close to each other, the two ends of the horizontal supporting bars respectively contact the inner walls of the adjacent two L-shaped steels, the vertical supporting bars contact the inner walls of the upper and lower L-shaped steels, the welding points in the area are welded by the welding mechanical arm, after the welding of the vertical supporting bars is completed, the above structure and action cooperation can realize the smooth feeding, stable overturning, accurate positioning of the L-shaped steels, reliable contact between the supporting bars and the L-shaped steels, and then the welding mechanical arm can conveniently weld multiple welding points with high quality, and the welding efficiency and the consistency of the welding products are improved.

Description

Technical Field

[0001] This invention relates to the field of metal welding technology, specifically to a metal welding fixing device. Background Technology

[0002] With the advancement of modern manufacturing, especially in the automotive, aerospace, and shipbuilding industries, welding processes are required to be not only efficient and stable but also possess higher precision. To meet these demands, automated welding fixtures have gradually been applied. When welding metal parts, it is necessary to firmly fix the metal workpiece in a suitable position to prevent welding defects caused by deformation or displacement during the welding process. Due to the significant differences in the shape, size, and material of metal parts, traditional welding fixtures are often unable to adapt to the needs of different workpieces.

[0003] When welding L-shaped steel and its support bars, manual placement, flipping, and positioning of the workpiece are usually required. This is not only cumbersome, but also prone to workpiece shaking, displacement, or unstable posture during flipping and welding, resulting in inaccurate assembly positions between the vertical and horizontal support bars, thus affecting welding quality and product consistency. At the same time, in the continuous welding process of multiple welding points, the lack of stable and reliable clamping and limiting structures can easily lead to poor jointing or welding position deviations. Summary of the Invention

[0004] The purpose of this invention is to provide a metal part welding and fixing device to solve the problems mentioned in the background art.

[0005] The main technical problem solved by this invention is: When welding L-shaped steel and its support bars, it is usually necessary to manually place, flip and position the workpiece. This is not only cumbersome, but also prone to workpiece shaking, displacement or unstable posture during flipping and welding, resulting in inaccurate assembly position between the vertical support bars and the horizontal support bars, thus affecting welding quality and product consistency.

[0006] This invention can be achieved through the following technical solutions: A metal part welding and fixing device includes a base, on which two fixed base plates are installed on both sides of the upper surface of the base. The fixed base plates on both sides are close to each other or far apart. At both ends of the middle part of the upper surface of each fixed base plate, a stroke cylinder is installed. A top plate is fixed to the pushing end of the stroke cylinder. A load-bearing flipping unit is provided on the upper surface of the fixed base plate and the lower surface of the top plate. The load-bearing flipping unit includes a base, and a limiting seat for limiting L-shaped steel is rotatably connected to the upper surface end of the base. An inlet for L-shaped steel to enter is provided on the outer side of the limiting seat, and a notch is provided on the upper edge of the base near the end of the limiting seat. The upper surface of the base is provided with a linear slide rail in the middle. A mounting plate is installed on the slider of the linear slide rail. A fixing frame is installed on the upper surface of the mounting plate. Both sides of the fixing frame are slidably connected with lateral clamping units that limit the vertical support bar. The end face of the fixing frame is slidably provided with a longitudinal clamping unit that limits the transverse support bar. The base has multiple welding points on top, and each welding point is equipped with a welding robotic arm.

[0007] A further technical improvement of the present invention is that: the longitudinal clamping unit includes a lower clamping jaw fixed to the bottom of the fixed frame and a vertical guide rail provided on the end face of the fixed frame, and a transverse clamping jaw is installed on the slider of the vertical guide rail, the transverse clamping jaw being located above the lower clamping jaw.

[0008] A further technical improvement of the present invention is that: the lateral clamping unit includes an electric push rod disposed in a groove on the side of the fixing frame, the pushing end of the electric push rod is connected to a connecting plate, and lateral grippers are installed on the upper and lower parts of the connecting plate, and the clamping height of the lower lateral gripper is the same as the clamping height of the lower gripper. A telescopic rod is installed inside the groove, and the telescopic end of the telescopic rod is fixed to the inner side of the connecting plate.

[0009] A further technical improvement of the present invention is that: a support bracket is provided on the upper surface of the base adjacent to the base, the upper surface of the support bracket is in contact with the end face of the limiting seat away from the entrance, and the support bracket is located on the lower side of the notch.

[0010] A further technical improvement of the present invention is that: the inner cavity of the bearing support is the same as the slot on the base, a lifting push rod is installed in the slot, the pushing end of the lifting push rod is connected to a limiting frame, and a push block for pushing out the L-shaped steel is installed on the upper surface of the limiting frame.

[0011] A further technical improvement of the present invention is that: the upper surface of the base and both sides of the linear slide rail are provided with conveying roller groups that are pushed upward by synchronous cylinders, and the conveying roller groups are in rolling contact with the lower surface of the L-shaped steel. A conveyor frame is provided on one side of the base away from the sliding direction of the linear slide rail, and the conveyor frame is flush with the upper surface of the conveyor roller assembly.

[0012] A further technical improvement of the present invention is that: the interior of the limiting seat is provided with a limiting unit for limiting the L-shaped steel. The limiting unit includes two electromagnets embedded inside the limiting seat. The pushing end of one electromagnet is connected to a limiting member one that limits the upper end of the L-shaped steel, and the pushing end of the other electromagnet is connected to a limiting member two that limits the lower end of the L-shaped steel.

[0013] A further technical improvement of the present invention is that: two limiting plates are fixed inside the limiting seat, and springs are sleeved on the outside of both limiting member one and limiting member two, with the end of each spring fixed to the corresponding limiting plate; Both the first limiting component and the second limiting component are slidably configured with respect to their respective limiting plates.

[0014] A further technical improvement of the present invention is that: a rotating shaft driven by a servo motor is installed on the upper end face of the base, and a sleeve is fixed to the outside of the rotating shaft, the sleeve being fixed to one side of the limiting seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The lateral clamping unit extends to its maximum length and clamps the vertical support bar, while the longitudinal clamping unit clamps the transverse support bar, maintaining accurate relative positions for the vertical and transverse support bars. The transverse support bar reaches the end of the L-shaped steel, and the fixed base plates on both sides approach each other, causing the two ends of the transverse support bar to contact the inner walls of two adjacent L-shaped steel sections. The vertical support bar contacts the inner walls of the upper and lower L-shaped steel sections. The welding robotic arm welds the contact points in this area. After welding the vertical support bar, the lateral clamping unit retracts. Returning to the initial position and continuing clamping, when the fixing frame clamps again and moves to the next welding point, the lateral clamping unit remains retracted. It extends again after moving into position, aligning with the inner wall of the L-shaped steel and providing limiting clamping to complete the welding operation at the next point. Through the coordination of the above structure and actions, smooth feeding, stable rotation, precise positioning, and reliable contact between the support bar and the L-shaped steel can be achieved. This facilitates high-quality welding of multiple points by the welding robot arm, improving welding efficiency and the consistency of the welded products. 2. By setting a limiting unit, the L-shaped steel enters the limiting seat and fits against its inner wall. The two electromagnets are activated, which respectively drive limiting component one and limiting component two to move along the guide direction of the corresponding limiting plate. This causes limiting component one to approach and abut against the upper end of the L-shaped steel, and limiting component two to approach and abut against the lower end of the L-shaped steel, thereby correspondingly limiting the two ends of the L-shaped steel. By synchronously limiting the upper and lower ends of the L-shaped steel, the positioning stability of the L-shaped steel in the limiting seat is improved, preventing it from shaking, shifting, or tilting. During the flipping and welding process of the L-shaped steel, limiting component one and limiting component two continuously provide auxiliary limiting for the upper and lower ends of the L-shaped steel, so that the L-shaped steel maintains a relatively stable clamping state in the limiting seat, thereby avoiding positional changes of the L-shaped steel due to flipping or welding vibration. 3. By setting up a support bracket, the support bracket provides support for the flipped limiting seat, effectively supporting the limiting seat and reducing the suspended stress state of the limiting seat when carrying the workpiece. The lifting push rod moves, driving the limiting frame and push block to move upward. The push block pushes the L-shaped steel located in the limiting seat from below, so that the L-shaped steel is freed from the limiting seat's limiting state, thus facilitating subsequent conveying and avoiding the inconvenience of manual material handling. After the L-shaped steel is pushed out, the synchronous cylinder simultaneously lifts the conveying rollers on both sides until they roll into contact with the lower surface of the L-shaped steel, thus forming a rolling support for the pushed-out L-shaped steel. With the help of the rolling support of the conveying rollers, the frictional resistance during the movement of the L-shaped steel can be reduced, allowing the L-shaped steel to move out more smoothly and steadily in the predetermined direction, reducing manual handling and improving the convenience of unloading. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the base and the limiting seat of the present invention; Figure 3 This is a top view of the mounting structure of the linear guide rail of the present invention; Figure 4 This is a three-dimensional installation structure diagram of the fixing frame and the lateral gripper of the present invention; Figure 5 For the present invention Figure 4 A magnified view of a section at point A in the middle; Figure 6 This is a schematic diagram of the installation structure of the pusher block and the base of the present invention.

[0018] In the diagram: 1. Base; 2. Fixed base plate; 3. Stroke cylinder; 4. Base; 5. Limiting seat; 6. Top plate; 7. Linear slide rail; 8. Inlet; 9. Limiting component one; 10. Limiting component two; 11. Limiting plate; 12. Spring; 13. Electromagnet; 14. Rotating shaft; 15. Lateral gripper; 16. Lateral gripper; 17. Mounting plate; 18. Fixing frame; 19. Vertical guide rail; 20. Connecting plate; 21. Electric push rod; 22. Conveying roller group; 23. Lifting push rod; 24. Limiting frame; 25. Bearing support; 26. Push block; 27. Notch. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0020] Please see Figures 1-6As shown, the present invention provides a metal part welding and fixing device, including a base 1, and fixing base plates 2 are installed on both sides of the upper surface of the base 1. The fixing base plates 2 on both sides are close to each other or far apart from each other. A stroke cylinder 3 is installed at both ends of the middle part of the upper surface of each fixing base plate 2. A top plate 6 is fixed to the pushing end of the stroke cylinder 3. A bearing flipping unit is provided on the upper surface of the fixing base plate 2 and the lower surface of the top plate 6. The load-bearing flipping unit includes a base 4, and a limiting seat 5 for limiting L-shaped steel is rotatably connected to the upper surface end of the base 4. An inlet 8 for L-shaped steel to enter is provided on the outer side of the limiting seat 5, and a notch 27 is provided on the upper edge of the base 4 near the end of the limiting seat 5. A linear slide rail 7 is provided in the middle of the upper surface of the base 1. An mounting plate 17 is installed on the slider of the linear slide rail 7. A fixing frame 18 is installed on the upper surface of the mounting plate 17. Lateral clamping units for limiting the vertical support bar are slidably connected to both sides of the fixing frame 18, and longitudinal clamping units for limiting the transverse support bar are slidably provided on the end face of the fixing frame 18. Multiple welding points are located above the base 1, and each welding point is equipped with a welding robotic arm.

[0021] In use, the L-shaped steel on both sides enters the corresponding limiting seat 5 through the inlet 8. The notch 27 provides space for the L-shaped steel to enter and avoid corners during the flipping process, ensuring that the L-shaped steel can smoothly enter the limiting seat 5. The limiting seat 5 limits the L-shaped steel to avoid placement deviation, ensures its accurate position, prevents interference with the workpiece during flipping, and improves the smoothness of flipping and positioning stability. Then, the limiting seat 5 rotates around the hinge point of the base 4, so that the L-shaped steel in the limiting seat 5 can be flipped stably, so that the L-shaped steel can be flipped to an angle and orientation suitable for welding. The stroke cylinder 3 is controlled according to the welding height, which in turn drives the top plate 6 to move up and down. This causes the L-shaped steel in the bearing flipping unit on the lower surface of the top plate 6 to move synchronously, cooperating with the bearing flipping unit on the upper surface of the fixed base plate 2, thereby adapting to the welding of workpieces of different heights.

[0022] Before welding, the fixing bracket 18 on the mounting plate 17 moves with the slider to the predetermined welding position. The lateral clamping unit extends to its maximum length and clamps the vertical support bar. As the vertical support bar moves, it moves into the space formed by the upper and lower L-shaped steels, and the bottom surface of the vertical support bar is in contact with the inner wall surface of the lower L-shaped steel. Meanwhile, the longitudinal clamping unit clamps the transverse support bar, ensuring that the vertical and transverse support bars maintain accurate relative positions and form a stable assembly relationship to be welded. The vertical and transverse support bars move with the fixing bracket 18 to the ends of the two L-shaped steels. Under the action of the stroke cylinder 3, the upper L-shaped steel moves down to contact the top surface of the vertical support bar. Figure 4As shown, the horizontal support bar reaches the end of the L-shaped steel. At the same time, the fixed base plates 2 on both sides move closer to each other, so that the two ends of the horizontal support bar respectively contact the inner walls of the two adjacent L-shaped steels. The vertical support bar contacts the inner walls of the upper and lower L-shaped steels. The welding robot arm welds the contact points in this area. After the vertical support bar is welded, the lateral clamping unit retracts and returns to the initial position to continue clamping. When the fixed frame 18 clamps again and moves to the next welding point, the lateral clamping unit remains in the retracted state. After it moves into place, it extends to align with the inner wall of the L-shaped steel and perform limiting clamping to complete the welding operation of the next welding point. Through the above structure and action coordination, the smooth feeding, stable flipping, precise positioning, and reliable contact between the support bar and the L-shaped steel can be achieved. This facilitates the welding robot arm to perform high-quality welding of multiple welding points, improves welding efficiency, and enhances the consistency of the welded products.

[0023] See Figure 5 As shown, the longitudinal clamping unit includes a lower jaw fixed to the bottom of the fixed frame 18 and a vertical guide rail 19 provided on the end face of the fixed frame 18. A transverse jaw 16 is installed on the slider of the vertical guide rail 19, and the transverse jaw 16 is located above the lower jaw.

[0024] During operation, the two transverse support bars are clamped by the lower jaw and the transverse jaw 16. The upper transverse support bar moves up and down relative to the lower jaw in the vertical direction by the transverse jaw 16 to change its height. The transverse support bar maintains a stable position before and during welding to avoid loosening or displacement, and is suitable for welding L-shaped steel of different heights.

[0025] See Figure 5 As shown, the lateral clamping unit includes an electric push rod 21 located in a groove on the side of the fixing frame 18. The pushing end of the electric push rod 21 is connected to a connecting plate 20. Lateral grippers 15 are installed on both the upper and lower parts of the connecting plate 20. The clamping height of the lower lateral gripper 15 is the same as that of the lower gripper, so that the lateral clamping unit and the longitudinal clamping unit form a corresponding fit in the clamping position, which is beneficial to maintaining an accurate positional relationship between the vertical support bar and the transverse support bar during assembly. A telescopic rod is installed in the groove, and the telescopic end of the telescopic rod is fixed to the inner side of the connecting plate 20.

[0026] During operation, the electric push rod 21 moves, causing the connecting plate 20 to move horizontally. The upper and lower lateral grippers 15 on the connecting plate 20 move outward, and the upper and lower lateral grippers 15 together clamp and limit the vertical support bar laterally, thereby keeping the vertical support bar stable in the horizontal direction. After clamping, it moves as a whole with the fixing frame 18 to the predetermined welding position, so that the vertical support bar is always kept in a stable and limited state during the movement and welding process, providing a reliable positioning basis for the welding robot arm to weld the corresponding weld point.

[0027] See Figure 1 and Figure 6 As shown, a support bracket 25 is provided on the upper surface of the base 1 near the side of the base 4. The upper surface of the support bracket 25 is in contact with the end face of the limiting seat 5 away from the entrance 8, and the support bracket 25 is located on the side below the notch 27.

[0028] After the L-shaped steel enters the limiting seat 5 through the inlet 8 and is limited by the limiting seat 5, during the process of the limiting seat 5 flipping to the predetermined position, the end face of the limiting seat 5 away from the inlet 8 comes into contact with the upper surface of the bearing support 25. The bearing support 25 provides support for the limiting seat 5, which can effectively support the limiting seat 5, reduce the suspended stress state of the limiting seat 5 when carrying the workpiece, and thus improve the stability of the limiting seat 5 when carrying the L-shaped steel. Without affecting the space provided by the notch 27 for the L-shaped steel to enter and flip to avoid, it can also provide lower support for the limiting seat 5 when it rotates into place or carries the workpiece. It retains the avoidance function of the notch 27 and enhances the stress reliability of the limiting seat 5 by using the bearing support 25.

[0029] See Figure 6 As shown, the inner cavity of the support 25 is the same as the slot on the base 1. A lifting push rod 23 is installed in the slot. The pushing end of the lifting push rod 23 is connected to the limit frame 24. A push block 26 that pushes out the L-shaped steel is installed on the upper surface of the limit frame 24. The upper surface of the base 1 and both sides of the linear slide rail 7 are provided with conveying roller groups 22 that are pushed upward by synchronous cylinders. The conveying roller groups 22 are in rolling contact with the lower surface of the L-shaped steel. A conveyor frame is provided on one side of the base 1 away from the sliding direction of the linear slide rail 7, and the conveyor frame is flush with the upper surface of the conveyor roller group 22.

[0030] After the L-shaped steel is welded, the lifting push rod 23 is activated, which drives the limiting frame 24 and the push block 26 to move upward. The push block 26 pushes the L-shaped steel located in the limiting seat 5 from below, so that the L-shaped steel is freed from the limiting state of the limiting seat 5, thereby facilitating subsequent transportation and avoiding the problem of inconvenience of manual material handling.

[0031] After the L-shaped steel is ejected, the synchronous cylinders simultaneously lift the conveyor rollers 22 on both sides until they roll into contact with the lower surface of the L-shaped steel, thus forming a rolling bearing on the ejected L-shaped steel. With the help of the rolling support of the conveyor rollers 22, the frictional resistance during the movement of the L-shaped steel can be reduced, allowing the L-shaped steel to move out more smoothly and steadily in the predetermined direction, reducing manual handling and improving the convenience of unloading. When the L-shaped steel is moved to the edge of the base 1 under the support of the conveyor rollers 22, it can smoothly transition to the conveyor frame, avoiding jamming, collision or tilting caused by height difference, thereby realizing continuous unloading and transfer after welding.

[0032] See Figure 2As shown, the interior of the limiting seat 5 is provided with a limiting unit for limiting the L-shaped steel. The limiting unit includes two electromagnets 13 embedded inside the limiting seat 5. The pushing end of one electromagnet 13 is connected to a limiting member 9 that limits the upper end of the L-shaped steel, and the pushing end of the other electromagnet 13 is connected to a limiting member 10 that limits the lower end of the L-shaped steel. The interior of the limiting seat 5 is fixed with two limiting plates 11. Both the first limiting member 9 and the second limiting member 10 are fitted with springs 12, and the end of each spring 12 is fixed to the corresponding limiting plate 11. Both limiting component 9 and limiting component 10 are slidably set with the corresponding limiting plate 11.

[0033] When the L-shaped steel enters the limiting seat 5 and comes into contact with its inner wall, the two electromagnets 13 are activated, which respectively drive the limiting member 9 and the limiting member 10 to move along the guide direction of the corresponding limiting plate 11, so that the limiting member 9 approaches and abuts the upper end of the L-shaped steel, and the limiting member 10 approaches and abuts the lower end of the L-shaped steel, thereby correspondingly limiting the two ends of the L-shaped steel. By synchronously limiting the upper and lower ends of the L-shaped steel, the positioning stability of the L-shaped steel in the limiting seat 5 is improved, and it is prevented from shaking, shifting or tilting.

[0034] During movement, limiting member 9 and limiting member 10 slide against the corresponding limiting plate 11 to obtain stable guidance and avoid skewing during extension or retraction, thereby ensuring more accurate and reliable limiting action on the L-shaped steel. At the same time, spring 12 is sleeved on the outside of limiting member 9 and limiting member 10, and its two ends are fixed to the corresponding structure. After the electromagnet 13 drives limiting member 9 and limiting member 10 to extend to the limit, spring 12 is in a stressed state. When the electromagnet 13 stops driving, spring 12 resets and pushes limiting member 9 and limiting member 10 to reset, so that they are freed from the limitation on the L-shaped steel, providing convenience for the loading, flipping or removal of the L-shaped steel.

[0035] During the flipping and welding process of the L-shaped steel, the first limiting component 9 and the second limiting component 10 continuously provide auxiliary limiting for the upper and lower ends of the L-shaped steel, so that the L-shaped steel maintains a relatively stable clamping state within the limiting seat 5. This avoids positional changes of the L-shaped steel due to flipping or welding vibration, improves the reliability of workpiece posture maintenance, and provides a stable foundation for subsequent precise welding by the welding robot arm.

[0036] See Figure 2 As shown, a rotating shaft 14 driven by a servo motor is installed on the upper end face of the base 4. A sleeve plate is fixed to the outside of the rotating shaft 14, and the sleeve plate is fixed to one side of the limiting seat 5.

[0037] During operation, the servo motor starts and drives the rotating shaft 14 to rotate. The rotating shaft 14 then drives the limiting seat 5 to rotate synchronously through the sleeve plate. Since the limiting seat 5 is fixedly connected to the sleeve plate, the rotational motion of the rotating shaft 14 can be stably transmitted to the limiting seat 5, causing the limiting seat 5 to flip around its rotational connection point. This causes the L-shaped steel inside the limiting seat 5 to flip synchronously and adjust to an angle and orientation suitable for welding.

[0038] In use, the lateral clamping unit extends to its maximum length and clamps the vertical support bar, while the longitudinal clamping unit clamps the transverse support bar, maintaining accurate relative positions between the two bars. The transverse support bar reaches the end of the L-shaped steel, and the two fixed base plates 2 approach each other, causing the two ends of the transverse support bar to contact the inner walls of two adjacent L-shaped steel sections. The vertical support bar contacts the inner walls of the upper and lower L-shaped steel sections. A welding robotic arm welds the contact points in this area. After welding the vertical support bar, the lateral clamping unit... The lateral clamping unit retracts and returns to its initial position to continue clamping. When the fixing frame 18 clamps again and moves to the next welding point, the lateral clamping unit remains retracted. After moving into place, it extends to align with the inner wall of the L-shaped steel and perform limiting clamping to complete the welding operation of the next welding point. Through the above structure and action coordination, the smooth feeding, stable flipping, precise positioning, and reliable fit between the support bar and the L-shaped steel can be achieved, thereby facilitating the welding robot arm to perform high-quality welding on multiple welding points, improving welding efficiency and the consistency of the welded products. By setting a limiting unit, the L-shaped steel enters the limiting seat 5 and fits against its inner wall. The two electromagnets 13 are activated, which respectively drive the limiting component 9 and the limiting component 10 to move along the guide direction of the corresponding limiting plate 11. The limiting component 9 approaches and abuts against the upper end of the L-shaped steel, and the limiting component 10 approaches and abuts against the lower end of the L-shaped steel, thereby limiting the two ends of the L-shaped steel. By synchronously limiting the upper and lower ends of the L-shaped steel, the positioning stability of the L-shaped steel in the limiting seat 5 is improved, and it is prevented from shaking, shifting or tilting. During the flipping and welding process of the L-shaped steel, the limiting component 9 and the limiting component 10 continuously provide auxiliary limiting for the upper and lower ends of the L-shaped steel, so that the L-shaped steel maintains a relatively stable clamping state in the limiting seat 5, thereby avoiding positional changes of the L-shaped steel due to flipping or welding vibration. By setting up a support bracket 25, the support bracket 25 provides support for the flipped limiting seat 5, which can effectively support the limiting seat 5 and reduce the suspended force state of the limiting seat 5 when carrying the workpiece. The lifting push rod 23 is activated, which drives the limiting frame 24 and the push block 26 to move upward. The push block 26 pushes the L-shaped steel located in the limiting seat 5 upward from below, so that the L-shaped steel is freed from the limiting state of the limiting seat 5, which facilitates subsequent conveying and avoids the problem of inconvenience of manual material handling. After the L-shaped steel is pushed out, the synchronous cylinder synchronously pushes the conveying roller group 22 on both sides upward until it rolls into contact with the lower surface of the L-shaped steel, thereby forming a rolling support for the pushed-out L-shaped steel. With the help of the rolling support of the conveying roller group 22, the frictional resistance during the movement of the L-shaped steel can be reduced, so that the L-shaped steel can move out more smoothly and steadily in the predetermined direction, reducing manual handling and improving the convenience of unloading.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A metal part welding and fixing device, comprising a base (1), characterized in that: Fixed base plates (2) are installed on both sides of the upper surface of the base (1). The fixed base plates (2) on both sides are close to each other or far apart. Stroke cylinders (3) are installed at both ends of the middle part of the upper surface of each fixed base plate (2). A top plate (6) is fixed to the pushing end of the stroke cylinder (3). A load-bearing flipping unit is provided on the upper surface of the fixed base plate (2) and the lower surface of the top plate (6). The load-bearing flipping unit includes a base (4), and a limiting seat (5) for limiting L-shaped steel is rotatably connected to the upper surface end of the base (4). An inlet (8) for L-shaped steel to enter is provided on the outer side of the limiting seat (5), and a notch (27) is provided on the upper edge of the base (4) near the end of the limiting seat (5). The upper surface of the base (1) is provided with a linear slide rail (7) in the middle. The slider of the linear slide rail (7) is equipped with an mounting plate (17). The upper surface of the mounting plate (17) is equipped with a fixing frame (18). Both sides of the fixing frame (18) are slidably connected with lateral clamping units that limit the vertical support bar. The end face of the fixing frame (18) is slidably provided with a longitudinal clamping unit that limits the transverse support bar. The base (1) has multiple welding points above it, and each welding point is equipped with a welding robot arm.

2. The metal part welding and fixing device according to claim 1, characterized in that, The longitudinal clamping unit includes a lower jaw fixed to the bottom of the fixed frame (18) and a vertical guide rail (19) provided on the end face of the fixed frame (18). A transverse jaw (16) is installed on the slider of the vertical guide rail (19), and the transverse jaw (16) is located above the lower jaw.

3. The metal part welding and fixing device according to claim 2, characterized in that, The lateral clamping unit includes an electric push rod (21) located in a groove on the side of the fixed frame (18). The pushing end of the electric push rod (21) is connected to a connecting plate (20). The upper and lower parts of the connecting plate (20) are equipped with lateral grippers (15). The clamping height of the lower lateral gripper (15) is the same as that of the lower gripper. A telescopic rod is installed in the groove, and the telescopic end of the telescopic rod is fixed to the inner side of the connecting plate (20).

4. The metal part welding and fixing device according to claim 1, characterized in that, The upper surface of the base (1) is provided with a support bracket (25) on the side adjacent to the base (4). The upper surface of the support bracket (25) is in contact with the end face of the limiting seat (5) away from the entrance (8), and the support bracket (25) is located on the side below the notch (27).

5. A metal part welding and fixing device according to claim 4, characterized in that, The inner cavity of the bearing support (25) is the same as the slot on the base (1). A lifting push rod (23) is installed in the slot. The pushing end of the lifting push rod (23) is connected to a limiting frame (24). A push block (26) that pushes out the L-shaped steel is installed on the upper surface of the limiting frame (24).

6. The metal part welding and fixing device according to claim 1, characterized in that, The upper surface of the base (1) and both sides of the linear slide rail (7) are provided with conveying roller groups (22) that are pushed upward by synchronous cylinders. The conveying roller groups (22) are in rolling contact with the lower surface of the L-shaped steel. A conveyor frame is provided on one side of the base (1) away from the sliding direction of the linear slide rail (7), and the conveyor frame is flush with the upper surface of the conveyor roller group (22).

7. The metal part welding and fixing device according to claim 1, characterized in that, The limiting seat (5) is provided with a limiting unit for limiting the L-shaped steel. The limiting unit includes two electromagnets (13) embedded in the limiting seat (5). The pushing end of one electromagnet (13) is connected to a limiting member one (9) that limits the upper end of the L-shaped steel, and the pushing end of the other electromagnet (13) is connected to a limiting member two (10) that limits the lower end of the L-shaped steel.

8. A metal part welding and fixing device according to claim 7, characterized in that, The limiting seat (5) has two limiting plates (11) fixed inside. Both the limiting member one (9) and the limiting member two (10) are fitted with springs (12), and the end of each spring (12) is fixed to the corresponding limiting plate (11). Both the first limiting member (9) and the second limiting member (10) are slidably set with the corresponding limiting plate (11).

9. A metal part welding and fixing device according to claim 1, characterized in that, The upper end face of the base (4) is equipped with a rotating shaft (14) driven by a servo motor. A sleeve is fixed to the outside of the rotating shaft (14), and the sleeve is fixed to one side of the limiting seat (5).

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