A welding robot ground rail

Abstract

The utility model relates to welding equipment technical field discloses a kind of welding robot ground rails, including track seat, limit switch is symmetrically fixedly connected in track seat front side, limit switch is electrically connected with external main controller by connecting line, track seat inner front side and rear side are respectively symmetrically fixedly connected with guide rail and main tooth rail, one side of main tooth rail is fixedly connected with auxiliary tooth rail, first sliding slot is arranged in auxiliary tooth rail, buffer rack is movably connected in first sliding slot, end block is fixedly connected in one side of auxiliary tooth rail, guide shaft is fixedly connected in one side of end block. Auxiliary tooth rail is arranged in one side of main tooth rail, and buffer rack that can slide is arranged in auxiliary tooth rail, to cooperate variable diameter spring and form buffer structure, can gradually increase driving gear rotation resistance, realize moving platform steady deceleration, avoid the problems such as component displacement, workpiece drop caused by sudden stop, and the limit switch and buffer structure linkage is used, timely close motor during moving platform buffer deceleration, double guarantee travel safety.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a welding robot ground rail. Background Technology

[0002] The ground rail used in welding machines is a linear motion platform on the ground that is adapted to the welding equipment, and it is also a core auxiliary component in the automated welding production line; The ground track mainly consists of a track, a servo drive device, and a control system. Through precise control by the servo motor, the robot moves smoothly along the track, significantly expanding the working radius and adapting to the welding needs of long workpieces and large steel structures. For example, the existing Chinese utility model patent with publication number CN223466318U discloses a robot mounted on a mounting plate. The servo motor drives gears, causing the mounting plate to move the robot. When the servo motor drives the slide, the drive system relies on servo parameters to set the travel distance, speed, and braking threshold. During long-term, high-frequency operation, voltage fluctuations and motor temperature... The increase can cause deviations in key parameters such as pulse equivalent and electronic gear ratio, resulting in a discrepancy between the displacement command issued by the controller and the actual movement distance of the slide. This can cause the slide to exceed the set travel distance, leading to a collision. Some equipment uses sensors to detect and trigger a stop command, but this action is based on real-time monitoring of the slide position or obstacle signals. Once an overtravel or collision is detected, the power supply to the drive system will be cut off or an emergency braking signal will be sent, forcing the slide to stop instantly, forming a sudden stop. This can easily cause the workpiece to fall or the equipment to deform locally due to inertia, especially when multiple welding mechanisms are set on a single ground rail. Utility Model Content

[0003] The purpose of this invention is to provide a welding robot track that can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A welding robot track includes a track base. Limit switches are symmetrically fixedly connected to the front side of the track base. The limit switches are electrically connected to an external main controller via connecting wires. Guide rails and main gear rails are symmetrically fixedly connected to the front and rear sides of the track base, respectively. A secondary gear rail is fixedly connected to one side of the main gear rail. A first groove is formed in the secondary gear rail, and a buffer gear rail is movably connected within the first groove. An end block is fixedly connected to one side of the secondary gear rail, and a guide shaft is fixedly connected to one side of the end block. The side of the guide shaft away from the end block is inserted into one side of the first groove. A compression spring is fitted on the guide shaft. A moving platform is slidably connected to the two guide rails. A motor is fixedly connected to the moving platform and is also electrically connected to the external main controller via connecting wires. The output end of the motor extends to a position below the moving platform and is fixedly connected to a drive gear. The drive gear meshes with one of the main gear rails.

[0005] As a further preferred embodiment of this utility model, two second sliding grooves are provided at the top and bottom of the auxiliary toothed rail. When the buffer toothed rail slides in the first sliding groove, the balls at the top and bottom of the buffer toothed rail can be guided and slid in the second sliding groove.

[0006] As a further preferred embodiment of this utility model, the buffer toothed rail is provided with an installation groove, and several balls are rotatably connected to the top and bottom of the installation groove, so that the buffer toothed rail can move smoothly in the first slide groove, thereby ensuring that the buffering action of the moving platform is carried out normally. Shaft holes are provided on both sides of the installation groove, the buffer toothed rail is slidably connected in the first slide groove, and the shaft holes pass through the guide shaft.

[0007] As a further preferred embodiment of this utility model, two limiting blocks are symmetrically fixedly connected in the mounting groove. Several support grooves are respectively opened on the opposite side of the two limiting blocks, so that after the ball is rotated and installed into the corresponding ball groove in the mounting groove, the ball is prevented from falling out of the mounting groove by the support of the support groove. Shaft grooves are respectively opened on the opposite side of the two limiting blocks, and the two shaft grooves are interlocked and connected to the outside of the guide shaft.

[0008] As a further preferred embodiment of this utility model, the compression spring is a variable diameter spring, which can achieve the following when it is initially engaged with the buffer toothed rail: the buffer toothed rail pushes the compression spring to compress, thereby gradually increasing the compression force by changing the diameter of the compression spring, thereby gradually increasing the rotational resistance of the drive gear and buffering the movement of the moving platform. During the buffering process, the bottom side of the moving platform contacts the limit switch and automatically shuts off the motor.

[0009] Compared with the prior art, the present invention has the following beneficial effects: In this utility model, a secondary gear rail is provided on one side of the main gear rail, and a sliding buffer gear rail is provided inside the secondary gear rail, thereby forming a buffer structure in conjunction with a variable diameter spring. This can gradually increase the rotational resistance of the active gear, realize the smooth deceleration of the moving platform, and avoid problems such as component displacement and workpiece falling caused by sudden stops. Furthermore, with the help of limit switches linked to the buffer structure, the motor is shut off in time during the buffer deceleration of the moving platform, providing double protection for travel safety. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the assembly structure of the auxiliary gear rail and the buffer gear rail of this utility model. Figure 4 This is a schematic diagram of the disassembled structure of the auxiliary toothed rail and the buffer toothed rail of this utility model; Figure 5 This is a schematic diagram of the disassembled structure of the auxiliary gear rail and the limiting block of this utility model; Figure 6 This is a schematic diagram of the compression spring structure of this utility model.

[0011] In the diagram: 1. Track base; 2. Limit switch; 3. Guide rail; 4. Main gear rail; 5. Secondary gear rail; 6. First slide rail; 7. Buffer gear rail; 8. End block; 9. Guide shaft; 10. Compression spring; 11. Second slide rail; 12. Mounting groove; 13. Ball bearing; 14. Shaft hole; 15. Support groove; 16. Shaft groove; 17. Limit block; 18. Moving platform; 19. Motor; 20. Drive gear. Detailed Implementation

[0012] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0013] like Figures 1-6As shown, the present invention provides a welding robot ground rail, including a rail base 1. Limit switches 2 are symmetrically fixedly connected to the front side of the rail base 1. The limit switches 2 are electrically connected to an external main controller via connecting wires. Guide rails 3 and main gear rails 4 are symmetrically fixedly connected to the front and rear sides of the rail base 1, respectively. A secondary gear rail 5 is fixedly connected to one side of the main gear rail 4. A first slide groove 6 is opened in the secondary gear rail 5. A buffer gear rail 7 is movably connected in the first slide groove 6. An end block 8 is fixedly connected to one side of the secondary gear rail 5. A guide shaft 9 is fixedly connected to one side of the end block 8. The side of the guide shaft 9 away from the end block 8 is inserted into one side of the first slide groove 6. A compression spring 10 is fitted on the guide shaft 9. A moving platform 18 is slidably connected to the two guide rails 3. A motor 19 is fixedly connected to the moving platform 18. The motor 19 is also electrically connected to an external main controller via connecting wires. The output end of the motor 19 extends to the position below the moving platform 18 and is fixedly connected to a drive gear 20. The drive gear 20 meshes with one of the main gear rails 4.

[0014] like Figures 2-6 As shown, the secondary gear rail 5 has two second slide grooves 11 at both the top and bottom. When the buffer gear rail 7 slides in the first slide groove 6, the balls 13 at the top and bottom of the buffer gear rail 7 can be guided and slid in the second slide grooves 11. The buffer gear rail 7 has an installation groove 12, and several balls 13 are rotatably connected at the top and bottom of the installation groove 12, so that the buffer gear rail 7 can move smoothly in the first slide groove 6, thereby ensuring the normal operation of the buffering action of the moving platform 18. Shaft holes 14 are provided on both sides of the installation groove 12. The buffer gear rail 7 is slidably connected in the first slide groove 6, and the shaft holes 14 pass through the guide shaft 9. Two limit blocks 17 are symmetrically fixedly connected in the installation groove 12. The two limit blocks 17 are respectively opened on opposite sides. There are several support slots 15, so that after the ball 13 is rotated and installed into the corresponding ball groove in the mounting groove 12, the support slots 15 can support the ball 13 and prevent it from falling out of the mounting groove 12. The two limit blocks 17 have shaft grooves 16 on opposite sides, and the two shaft grooves 16 are interlocked and connected to the outside of the guide shaft 9. The compression spring 10 is a variable diameter spring, which can achieve the initial engagement with the buffer toothed rail 7. When the buffer toothed rail 7 pushes the compression spring 10 to compress, the compression force is gradually increased by changing the diameter of the compression spring 10, so as to gradually increase the rotational resistance of the drive gear 20 and buffer the movement of the moving platform 18. During the buffering process, the bottom side of the moving platform 18 contacts the limit switch 2 and automatically shuts off the motor 19.

[0015] It should be noted that this utility model is a welding robot ground rail. When running, the motor 19 is started, and the motor 19 drives the output end of the active gear 20 to rotate. The active gear 20 and the main gear rail 4 mesh with each other. With the help of the gear transmission force, the moving platform 18 is driven to slide smoothly on the guide rail 3. The moving platform 18 carries the welding robot to make linear motion along the track seat 1. When the motor 19 fails to determine the movement process due to a program malfunction, and the moving platform 18 is about to reach the end of its stroke, the drive gear 20 will first contact the buffer gear 7 on one side of the secondary gear rail 5, continuing to push the buffer gear 7 to slide within the first groove 6 of the secondary gear rail 5. The buffer gear 7 moves along the guide shaft 9 through the shaft hole 14, compressing the compression spring 10 mounted on the guide shaft 9. The compression spring 10 is a variable diameter spring; as the compression deepens, its diameter changes, gradually increasing the compression force. This force reacts on the buffer gear 7. Because the buffer gear 7 moves towards the main gear rail 4, the drive gear 20 is pushed by the load of the moving platform 18. After the moving limit block 17 moves, the rotational resistance of the drive gear 20 is gradually increased. When the buffer tooth rail 7 moves in the first slide groove 6 and its end disengages from the drive gear 20, the buffer tooth rail 7 rebounds and resets to a tooth position by the force of the compression spring 10 and meshes with the drive gear 20. The rotation of the drive gear 20 pushes the buffer tooth rail 7 to one side by a tooth position, thereby realizing the free rotation of the drive gear 20. During this process, the moving platform 18 will touch the limit switch 2 on the track seat 1. The limit switch 2 immediately sends a signal to the external main controller through the connecting line. After receiving the signal, the main controller will shut down the motor 19 in time, so that the moving platform 18 stops completely.

[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A welding robot ground rail, characterized in that: The system includes a track base (1), with limit switches (2) symmetrically fixedly connected to the front side of the track base (1). The limit switches (2) are electrically connected to an external main controller via connecting lines. Guide rails (3) and main gear rails (4) are symmetrically fixedly connected to the front and rear sides of the track base (1), respectively. A secondary gear rail (5) is fixedly connected to one side of the main gear rail (4). A first groove (6) is provided in the secondary gear rail (5). A buffer gear rail (7) is movably connected in the first groove (6). An end block (8) is fixedly connected to one side of the secondary gear rail (5). A guide is fixedly connected to one side of the end block (8). Shaft (9), the guide shaft (9) is inserted into the first slide groove (6) on the side away from the end block (8), a compression spring (10) is fitted on the guide shaft (9), a moving platform (18) is slidably connected on the two guide rails (3), a motor (19) is fixedly connected on the moving platform (18), the motor (19) is also electrically connected to the external main controller through the connecting line, the output end of the motor (19) extends to the position below the moving platform (18) and is fixedly connected to the drive gear (20), the drive gear (20) meshes with one of the main gear rails (4).

2. The welding robot ground rail according to claim 1, characterized in that: Two second slide grooves (11) are provided at the top and bottom of the auxiliary gear (5).

3. The welding robot ground rail according to claim 1, characterized in that: The buffer toothed rail (7) has an installation groove (12) inside. Several balls (13) are rotatably connected to the top and bottom of the installation groove (12). Shaft holes (14) are opened on both sides of the installation groove (12). The buffer toothed rail (7) is slidably connected in the first slide groove (6). The shaft hole (14) passes through the guide shaft (9).

4. The welding robot ground rail according to claim 3, characterized in that: Two limiting blocks (17) are symmetrically fixedly connected in the mounting groove (12). Several slots (15) are opened on the opposite side of the two limiting blocks (17). Shaft grooves (16) are opened on the opposite side of the two limiting blocks (17), and the two shaft grooves (16) are interlocked on the outside of the guide shaft (9).

5. The welding robot ground rail according to claim 1, characterized in that: The compression spring (10) is a variable diameter spring.

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