A fault-prevention device for automotive welding fixtures

Abstract

This utility model belongs to the field of automotive manufacturing technology and relates to an error-proofing device for automotive welding fixtures. It includes a base, a motor fixedly connected to one side of the base, a lead screw rotatably connected inside the base, a carrier plate threaded onto the surface of the lead screw, a lift fixedly connected to the top of the carrier plate, an L-shaped plate fixedly connected to the top of the carrier plate, a frame fixedly connected to the output end of the lift, a pressing head fixedly connected to one end of the frame, an extension plate fixedly connected to the front end of the base, a long plate fixedly connected to the front end of the extension plate, an assembly plate fixedly connected to the front end of the long plate, extension rods fixedly connected to both sides of the carrier plate, and a clamping plate fixedly connected to one end of both extension rods. This error-proofing device for automotive welding fixtures uses the pressing head and clamping plate to comprehensively bind and fix the welded parts, preventing the welded parts from tilting and shifting under stress during processing, reducing welding errors caused by displacement of the clamped welded parts, and enhancing the stability and accuracy of welding after the parts are clamped.

Description

Technical Field

[0001] This utility model belongs to the field of automobile manufacturing technology, and specifically relates to an error prevention device for automobile welding fixtures. Background Technology

[0002] Welding is a crucial step in automobile manufacturing. Welding fixtures, as auxiliary tools in the welding process, directly impact welding quality and production efficiency with their stability and accuracy. However, in actual operation, operational errors and unreasonable fixture design often lead to welding misalignment or mismatch between two welded parts, thus affecting product quality and manufacturing costs.

[0003] Meanwhile, existing automotive welding fixtures typically use a single-sided clamping method to fix parts, leaving the unclamped sides of the part free. During welding, if the part is subjected to tension or pressure towards the unclamped area, it can cause tilting or displacement at the clamping point, leading to misalignment at the weld joint and affecting the fixture's fixation effectiveness. This also impacts welding quality and production efficiency. Therefore, there is an urgent need to develop a fixture error-proofing device that can effectively prevent welding errors. Summary of the Invention

[0004] The purpose of this invention is to provide an error-proof device for automotive welding fixtures to solve the problem of misalignment of welded parts when welding errors occur.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An error-proofing device for an automotive welding fixture includes a base 1, a motor 2 fixedly connected to one side of the base 1, and a lead screw 3 rotatably connected inside the base 1; a carrier plate 4 is threadedly connected to the surface of the lead screw 3, and a lifting mechanism 5 and an L-shaped plate 6 are fixedly connected to the top of the carrier plate 4; a frame 7 is fixedly connected to the output end of the lifting mechanism 5, and an extrusion head 8 is fixedly connected to one end of the frame 7; an extension plate 9 is fixedly connected to the front end of the base 1, a long plate 10 is fixedly connected to the front end of the extension plate 9, and an assembly plate 11 is fixedly connected to the front end of the long plate 10; extension rods 12 are fixedly connected to both sides of the carrier plate 4, and a clamping plate 13 is fixedly connected to one end of both extension rods 12.

[0007] Furthermore, the base 1 and the mounting plate 11 have holes on their surfaces.

[0008] Furthermore, the surface of the long plate 10 is provided with a plurality of cross grooves 14, and insert plates 15 are inserted into the inner wall of the cross grooves 14, and a flat plate 16 is fixedly connected to the top of the insert plates 15.

[0009] Furthermore, both sides of the extension plate 9 are fixedly connected to the self-lubricating rod 17, and the other end of the self-lubricating rod 17 is fixedly connected to the assembly plate 11; both ends of the clamping plate 13 are provided with round holes 18, and the round holes 18 are slidably connected to the surface of the self-lubricating rod 17.

[0010] Furthermore, the frame 7 is L-shaped, with a U-shaped frame 19 fixedly connected to the top of the frame 7, and the other end of the U-shaped frame 19 fixedly connected to the bottom of the frame 7.

[0011] Furthermore, a detection probe 20 is fixedly connected inside the frame 7; a business card 21 is fixedly connected to the surface of the base 1.

[0012] Furthermore, the bottom surface of the extrusion head 8 is made of hard rubber.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention uses an extrusion head and clamping plate to bind and fix the welded parts in all directions, which can effectively prevent the welded parts from tilting and shifting under stress during processing, reduce welding errors caused by displacement of the clamped welded parts, and enhance the stability and accuracy of welding after the parts are clamped. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of the error prevention device for automotive welding fixtures of this utility model;

[0017] Figure 2 This is a vertical cross-sectional view of the anti-misoperation device for automotive welding fixtures of this utility model;

[0018] Figure 3 This is an exploded view of the main structure of the error-proof device for automotive welding fixtures of this utility model;

[0019] Figure 4 This is a bottom view of the bottom structure of the error-proof device for automotive welding fixtures of this utility model.

[0020] In the diagram, 1. Base 2. Motor 3. Lead screw 4. Carrier plate 5. Lifting machine 6. L-shaped plate 7. Frame 8. Extrusion head 9. Extension plate 10. Long plate 11. Assembly plate 12. Extension rod 13. Clamping plate 14. Cross groove 15. Insert plate 16. Flat plate 17. Self-lubricating rod 18. Round hole 19. U-shaped frame 20. Detection probe 21. Business card. Detailed Implementation

[0021] The present invention will be further described below with reference to embodiments:

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-4 As shown, the present invention relates to an anti-error device for automotive welding fixtures, comprising a base 1, a motor 2 fixedly connected to one side of the base 1, a lead screw 3 rotatably connected inside the base 1, a carrier plate 4 threadedly connected to the surface of the lead screw 3, a lifting mechanism 5 and an L-shaped plate 6 fixedly connected to the top of the carrier plate 4, a frame 7 fixedly connected to the output end of the lifting mechanism 5, an extrusion head 8 fixedly connected to one end of the frame 7, an extension plate 9 fixedly connected to the front end of the base 1, a long plate 10 fixedly connected to the front end of the extension plate 9, an assembly plate 11 fixedly connected to the front end of the long plate 10, extension rods 12 fixedly connected to both sides of the carrier plate 4, and a clamping plate 13 fixedly connected to one end of both extension rods 12.

[0025] This invention connects to a control computer via a motor 2 and a lifting platform 5 for real-time adjustment and control. The worker places the parts to be welded on the top of the long plate 10. Then, the motor 2 is started, driving the lead screw 3 to rotate. Through the threaded connection between the lead screw 3 and the carrier plate 4, the carrier plate 4, constrained by the inner wall of the base 1, can move along the surface of the lead screw 3. The rearward movement of the carrier plate 4 drives the extension rod 12, causing the clamping plate 13 to also move backward, gradually approaching the extension plate 9. The clamping plate 13 pushes the parts at the top of the long plate 10 towards the extension plate 9, thus clamping and fixing the parts. Next, the lifting platform 5 is started to retract downward, driving the frame 7 to move downward along both sides of the L-shaped plate 6, thereby lowering the height of the extrusion head 8 to near the top of the clamped part, clamping and fixing the welded parts from top to bottom. The base 1 and the mounting plate 11 have holes on their surfaces, facilitating the installation of bolts to various workbenches. Furthermore, this device can be set up in multiple groups for separate clamping and fixing of two parts to be welded. Multiple sets can also clamp and fix different areas of the parts. Through these operations, the top and both sides of the welded part are clamped and fixed, preventing situations where the other sides are suspended due to clamping on only one side, or where the part tilts or shifts due to stress during processing. This enhances the reliability and accuracy of welding and reduces welding errors caused by misalignment of the clamped parts. Simultaneously, this automotive welding fixture error-proofing device is also equipped with an intelligent sensing system (the monitoring part uses an existing intelligent sensing system, which is not the technical content protected by this utility model, and its specific structure will not be described in detail). When the lifting platform 5 and the motor 2 drive the extrusion head 8 or the clamping plate 13 to move, the control computer monitors the operating speed and pressure of the lifting platform 5 and the motor 2 in real time to ensure that the clamping force on the parts is moderate, preventing damage to the parts due to excessive force.

[0026] The surface of the long plate 10 has several cross grooves 14, and insert plates 15 are inserted into the inner walls of the cross grooves 14. A flat plate 16 is fixedly connected to the top of the insert plate 15. By adjusting the distance between the flat plate 16 and the extension plate 9 according to the size of the clamping part, and by inserting the insert plate 15 into the cross grooves 14 to fix the position of the flat plate 16, the initial position between the flat plate 16 and the clamping plate 13 can be reduced or expanded. This allows the lead screw 3 to move the clamping plate 13 to the leftmost or rightmost position without driving the carrier plate 4 when the clamping plate 13 clamps the two sides of small parts, thus effectively reducing the travel of the clamping plate 13 during movement and further improving work efficiency. At the same time, this adjustment method allows the device to flexibly adapt to clamping parts of different sizes, enhancing its practicality and versatility.

[0027] Both sides of the extension plate 9 are fixedly connected to the self-lubricating rod 17, and the other end of the self-lubricating rod 17 is fixedly connected to the assembly plate 11. Both ends of the clamping plate 13 are provided with round holes 18, which are slidably connected to the surface of the self-lubricating rod 17. When the clamping plate 13 moves along the extension rod 12 and the carrier plate 4, the self-lubricating rod 17 is inserted into the round hole 18, which restricts both sides of the clamping plate 13, ensuring that the clamping plate 13 moves horizontally on the surface of the self-lubricating rod 17 and preventing the clamping plate 13 from tilting during movement. At the same time, the self-lubricating rod 17 can support the clamping plate 13, preventing the clamping plate 13 and the extension rod 12 from deforming due to long-term stress, thereby improving the service life of the device.

[0028] The frame 7 has an L-shaped structure, with a U-shaped frame 19 fixedly connected to its top. The other end of the U-shaped frame 19 is fixedly connected to the bottom of the frame 7. Through the L-shaped structure of the frame 7 and the connection and fixation of both ends via the U-shaped frame 19, a triangular structure is formed between the frame 7 and the U-shaped frame 19. In actual use, this triangular structure greatly enhances the stability and load-bearing capacity of the frame 7. When the frame 7 is subjected to pressure and clamping, the triangular structure effectively disperses these forces, preventing deformation or damage. Furthermore, this design helps improve welding precision, ensuring the structural stability of the frame 7, preventing deformation, and reducing welding errors.

[0029] A detection probe 20 is fixedly connected inside the frame 7, and a business card 21 is fixedly connected to the surface of the base 1. The detection probe 20 on the U-shaped frame 19 can detect the QR code on the surface of the clamped part by using the QR code inherent in the welding part itself. When multiple sets of this device are used together to clamp two welding parts, the detection probes 20 in each set can automatically collect the QR code on the surface of the part and transmit it to the control computer. The control computer can quickly determine whether the two welding parts match by comparing the QR code information, thus effectively avoiding incorrect pairing during the welding process. If the QR code information does not match, the control computer will immediately issue an alarm and stop the welding operation. Furthermore, different business cards 21 can be used with the multiple sets of this device. The business card 21 can be a model sticker or a QR code image. By matching different welding part models with different business cards 21, and then having the staff scan the business card 21 to obtain the part model image, the staff can distinguish the part models of the two sets of welding parts. This allows a single clamping device to be used with a single part model, further reducing the welding error rate caused by incorrect part models. The process of collecting, transmitting, and comparing the QR codes on the surface of the parts is existing technology and is not the technical content protected in this application, so it will not be described in detail here.

[0030] The bottom surface of the extrusion head 8 is made of hard rubber. This hard rubber material provides excellent anti-slip and wear-resistant properties at the contact point between the extrusion head 8 and the part, effectively preventing the part from sliding or shifting during welding and ensuring the accuracy and stability of the weld. Simultaneously, the hard rubber material also has good cushioning properties, which can reduce vibration and impact forces generated during welding to a certain extent, protecting the part from damage.

[0031] In this invention, fixed connections refer to the way the former and the latter are connected together in a fixed manner, such as by welding or by bolts, to achieve structural integration. The choice of method can be made by the technician.

[0032] Working principle:

[0033] The motor 2 is connected to the lifting platform 5 and the control computer to achieve real-time adjustment and control of the start-up. The workers then place the parts to be welded on the top of the long plate 10. At this point, the motor 2 is started, driving the lead screw 3 to rotate. Through the threaded connection between the lead screws 3 and 4, the carrier plate 4, constrained by the inner wall of the base 1, can move along the surface of the lead screw 3. The rearward movement of the carrier plate 4 drives the extension rod 12, causing the clamping plate 13 to also move backward, gradually approaching the extension plate 9. Simultaneously, the clamping plate 13 pushes the parts at the top of the long plate 10 towards the extension plate 9, forming a clamping and fixing mechanism for the parts. Then, the lifting platform 5 is started to retract downward, driving the frame 7 to move downward along both sides of the L-shaped plate 6, thereby lowering the height of the extrusion head 8 and bringing it closer to the top of the clamped part, clamping and fixing the welded parts from top to bottom. The holes on the surface of the base 1 and the assembly plate 11 facilitate the installation of bolts to various workbenches. Furthermore, this device can be set up in multiple units for separate clamping and fixing of two parts to be welded. Multiple units can also clamp and fix different areas of the parts, ensuring that the top and sides of the welded component are clamped and fixed. Simultaneously, this automotive welding fixture error-proofing device is equipped with an intelligent sensing system. When the lifting platform 5 and motor 2 drive the extrusion head 8 or clamping plate 13 to move, the control computer monitors the operating speed and pressure of the lifting platform 5 and motor 2 in real time to ensure that the clamping force on the parts is appropriate.

[0034] The production line utilizes various devices, including the production line and its associated QR codes on the welded parts. These QR codes are then detected by the detection probes 20 on the U-shaped frame 19. When multiple units of this device are used in conjunction to clamp two welded parts, the detection probes 20 on the U-shaped frame 19 automatically collect the QR codes on the parts and transmit them to the control computer. The control computer compares the QR code information to quickly determine if the two welded parts match, effectively preventing incorrect pairing during the welding process. If the QR code information does not match, the control computer will immediately issue an alarm and stop the welding operation. Furthermore, multiple units of this device can use different name cards 21, which can be model stickers or QR code images. Different welded part models are matched with different name cards 21, and staff can scan the name card 21 to obtain the part model image, allowing staff to distinguish between the two sets of welded part models. This enables a single clamping device to be used with a single part model.

[0035] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A fault-prevention device for automotive welding fixtures, characterized in that: The system includes a base (1), a motor (2) fixedly connected to one side of the base (1), and a lead screw (3) rotatably connected inside the base (1); a carrier plate (4) is threadedly connected to the surface of the lead screw (3), and a lift (5) and an L-shaped plate (6) are fixedly connected to the top of the carrier plate (4); a frame (7) is fixedly connected to the output end of the lift (5), and an extrusion head (8) is fixedly connected to one end of the frame (7); an extension plate (9) is fixedly connected to the front end of the base (1), a long plate (10) is fixedly connected to the front end of the extension plate (9), and an assembly plate (11) is fixedly connected to the front end of the long plate (10); extension rods (12) are fixedly connected to both sides of the carrier plate (4), and a clamping plate (13) is fixedly connected to one end of both extension rods (12).

2. The error-proofing device for automotive welding fixtures according to claim 1, characterized in that: The base (1) and the mounting plate (11) have holes on their surfaces.

3. The error-proofing device for automotive welding fixtures according to claim 1, characterized in that: The surface of the long plate (10) is provided with a number of cross grooves (14), and insert plates (15) are inserted into the inner wall of the cross grooves (14). A flat plate (16) is fixedly connected to the top of the insert plates (15).

4. The error-proofing device for automotive welding fixtures according to claim 1, characterized in that: Both sides of the extension plate (9) are fixedly connected to the self-lubricating rod (17), and the other end of the self-lubricating rod (17) is fixedly connected to the assembly plate (11); both ends of the clamping plate (13) are provided with round holes (18), and the round holes (18) are slidably connected to the surface of the self-lubricating rod (17).

5. The error-proofing device for automotive welding fixtures according to claim 1, characterized in that: The frame (7) is L-shaped, and a U-shaped frame (19) is fixedly connected to the top of the frame (7). The other end of the U-shaped frame (19) is fixedly connected to the bottom of the frame (7).

6. The error-proofing device for automotive welding fixtures according to claim 1, characterized in that: A detection probe (20) is fixedly connected inside the frame (7); a business card (21) is fixedly connected to the surface of the base (1).

7. The error-proofing device for automotive welding fixtures according to claim 1, characterized in that: The bottom surface of the extrusion head (8) is made of hard rubber.

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