A wiring terminal welding device

Abstract

The utility model relates to the technical field of soldering machine, concretely is a kind of wiring terminal welding device, including positioning fixture, terminal centering mechanism, cable clamping mechanism, welding head and pressure arm mechanism. Positioning fixture is provided with the positioning groove extending along left and right direction, arc baffle is arranged in positioning groove;Terminal centering mechanism includes two dial blocks respectively arranged in the front and back of positioning groove, two dial blocks can move towards each other, and can move along left and right direction, to drive wiring terminal to move to the below welding head;Cable clamping mechanism includes the omega type clamping piece that can elastically hold cable and transverse shift;Pressure arm mechanism includes the circular arc pressing plate with opening, circular arc pressing plate can rotate left and right after welding, to pass through the inner wall of it and press tightly the two arms of wiring terminal. The present application can avoid operator to continuously manually resist cable and wiring terminal before welding, improve the stability of welding preparation process simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of soldering machine technology, specifically to a terminal welding device. Background Technology

[0002] Terminal blocks are widely used in electrical connection fields, combined with accessories Figure 1 As shown, some terminals 7 are provided with a welding portion 71 for welding cable conductors, and two inwardly pressing arms 72 are provided near the welding portion 71. During assembly, it is usually necessary to first remove the insulation layer of the cable 8 end, so that the exposed cable conductor extends into the welding portion 71 of the terminal 7, and then fix the cable conductor to the terminal 7 by the welding head 4. After welding is completed, the two arms 72 are pressed inward to improve the mechanical holding force between the cable 8 and the terminal 7.

[0003] In existing technologies, the above assembly process is mostly done manually. Operators typically need to manually place the terminal block 7 and manually hold the cable 8, ensuring the insulation end of the cable 8 is against the corresponding position on the terminal block 7 before performing the soldering operation. During manual operation, the hands need to simultaneously hold and position the terminal block 7 and the cable 8. The relative position of the terminal block 7 and the cable 8 needs to be continuously maintained manually throughout this process. The operator must ensure the cable 8 is in place while simultaneously performing the soldering operation, making the overall operation quite cumbersome.

[0004] Meanwhile, due to the small size of the terminal block 7, it is usually necessary to adjust the terminal block 7, cable 8, and welding part 71 to the appropriate position in sequence before welding. If the terminal block 7 or cable 8 moves slightly before welding, it is necessary to readjust and reposition it, which results in a long preparation time for welding a single terminal block 7, which is not conducive to continuous operation.

[0005] In addition, manual operation usually requires the sequential completion of steps such as placing the terminal block 7, aligning the cable 8, welding, clamping the arm 72, and removing the part. There is a lack of effective connection between the various processes, making it difficult to form a continuous and coordinated operation process. The operation rhythm depends to a large extent on the skill level of the operator, resulting in low overall production efficiency and hindering mass production and stable production.

[0006] Therefore, it is necessary to provide a terminal welding device that can relative position the terminal block and cable, reduce manual repeated pressing and adjustment, and can continuously complete the arm clamping operation after welding. Utility Model Content

[0007] The purpose of this invention is to provide a terminal welding device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a terminal welding device, comprising a positioning clamp, a terminal alignment mechanism, a cable clamping mechanism, a welding head, and a pressure arm mechanism; The positioning fixture is provided with a positioning groove extending in the left-right direction, and the positioning groove is used to place the wiring terminal and cable; An arc-shaped baffle is provided in the positioning groove, which is used to limit the relative proximity of the wiring terminal and the cable respectively; The terminal alignment mechanism includes two levers respectively disposed on the front and rear sides of the positioning groove. The two levers can move towards each other to a working position corresponding to the two arms of the terminal block, and the two levers can move in the left and right direction to drive the terminal block to move along the positioning groove to below the welding head by acting on the two arms or the root of the arms of the terminal block. The cable clamping mechanism includes an Ω-shaped clamping piece disposed on one side of the positioning clamp. The Ω-shaped clamping piece is used to elastically clamp the cable and can move in the left and right direction to bring the cable closer to the terminal block. The welding head is disposed above the positioning groove and is used to weld and fix the cable conductor to the terminal when the cable conductor extends into the welding part of the terminal. The pressure arm mechanism includes an arc-shaped pressure plate rotatably mounted on the positioning fixture. The arc-shaped pressure plate has an opening and can rotate left and right to press the two arms of the terminal block against the inner wall of the arc-shaped pressure plate after the welding head has completed welding. The two pry bars are also used to keep the terminals positioned on the front and rear sides of the terminals when the arc-shaped pressure plate presses the two arms of the terminals together, so as to limit the deflection of the terminals within the positioning groove.

[0009] Optionally, the positioning groove includes a terminal positioning section and a cable positioning section, the width of the terminal positioning section being greater than the width of the cable positioning section, the terminal positioning section being used to place the wiring terminal, and the cable positioning section being used to place the cable; the arc-shaped baffle is located at the boundary between the terminal positioning section and the cable positioning section, and the width of the arc-shaped baffle is less than the width of the cable positioning section.

[0010] Optionally, a toothed ring is provided on the back of the arc-shaped pressure plate, a drive motor is provided on the positioning fixture, and a drive gear is provided at the output end of the drive motor. The drive gear meshes with the toothed ring to drive the arc-shaped pressure plate to rotate left and right; the rotation axis of the arc-shaped pressure plate is parallel to the positioning groove.

[0011] Optionally, the opening of the arc-shaped pressure plate faces upwards from the positioning groove when the arc-shaped pressure plate is in its initial position, so as to avoid the insertion path of the terminal block, the insertion path of the cable, and the removal path of the terminal block after welding.

[0012] Optionally, the terminal alignment mechanism further includes a base plate, on which two first guide rails distributed along the front-rear direction are provided. Each of the first guide rails is fitted with a first slider. The first sliders located on the front and rear sides are respectively connected to racks via fixing blocks. The toothed sides of the two racks are arranged facing each other. An intermediate gear is provided between the two first guide rails to mesh with the two racks. The two fixing blocks are respectively equipped with the shifting blocks, and the two shifting blocks are arranged facing each other. An alignment cylinder is installed on the base plate, and the piston rod of the alignment cylinder is connected to one of the racks.

[0013] Optionally, it also includes a transverse sliding seat, on which two second guide rails are provided distributed in the left-right direction, and a second slider that cooperates with the second guide rails is provided on the bottom surface of the base plate. A first cylinder is installed on the transverse sliding seat, and the piston rod of the first cylinder is connected to the base plate.

[0014] Optionally, the Ω-shaped clamp is mounted on a cable slide, and the cable slide is connected to a second cylinder. The second cylinder is used to drive the cable slide, the Ω-shaped clamp, and the cable held by the Ω-shaped clamp to move in the left-right direction.

[0015] Optionally, a controller is also included, which is electrically connected to the welding head, the drive motor, the centering cylinder, the first cylinder, and the second cylinder, respectively. The controller is used to control the two toggle blocks to move to the working position corresponding to the two arms of the terminal block, control the first cylinder to drive the terminal block to move laterally to the welding position, control the second cylinder to drive the cable to move laterally to the position abutting the arc-shaped baffle, control the welding head to weld, and control the arc-shaped pressure plate to press the two arms of the terminal block.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This application utilizes a positioning groove on a positioning fixture, with an arc-shaped baffle within the groove, and an Ω-shaped clamp that can move left and right. This allows the terminal block and cable to approach and be positioned within the same positioning fixture. The arc-shaped baffle restricts the relative proximity of the terminal block and cable, while the Ω-shaped clamp elastically holds the cable and moves it towards the terminal block. This eliminates the need for operators to continuously manually support the cable and terminal block before welding, improving the stability and ease of operation during welding preparation.

[0017] 2. By setting two levers on the front and rear sides of the positioning groove, the operator does not need to place the terminal block precisely under the welding head at once when placing the terminal block. The operator only needs to place the terminal block into the positioning groove, and then the two levers will cooperate with the two arms or the base of the arms of the terminal block to move the terminal block along the positioning groove to the welding position. This reduces the initial placement accuracy requirement of the terminal block and improves the convenience of the terminal block placement and the efficiency of welding preparation.

[0018] 3. This application mounts the welding head and the clamping arm mechanism on the same positioning fixture. After the welding head completes welding, the arc-shaped clamping plate can rotate and press the two arms of the terminal block against its inner wall, allowing welding and clamping to be completed continuously under the same positioning reference. Therefore, the welded terminal block does not need to be transferred to another location for clamping, reducing the steps of repositioning and secondary clamping after welding. This helps to shorten the processing cycle of a single terminal block and reduce positional deviations caused by manual connection of different processes.

[0019] 4. In this application, when the arc-shaped pressure plate presses the two arms of the terminal block, the two levers are kept on the front and rear sides of the terminal block to limit the terminal block from deflecting in the positioning groove, thereby improving the stability and forming consistency of the pressing process. At the same time, the arc-shaped pressure plate has an opening, and the opening faces the top of the positioning groove when the arc-shaped pressure plate is in the initial position, which can avoid the insertion path of the terminal block, the insertion path of the cable, and the removal path of the terminal block after welding, thereby improving the convenience of loading and unloading the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an existing terminal block; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the positioning fixture of this utility model; Figure 4 This is a schematic diagram of the terminal alignment mechanism, cable clamping mechanism, and pressure arm mechanism of this utility model.

[0021] In the diagram: 1. Positioning clamp; 11. Positioning groove; 111. Terminal positioning section; 112. Cable positioning section; 12. Arc-shaped baffle; 2. Terminal centering mechanism; 21. Toggle block; 22. Centering cylinder; 23. Base plate; 24. First guide rail; 25. Transverse sliding seat; 26. First cylinder; 27. First slider; 28. Fixing block; 29. ​​Rack; 210. Intermediate gear; 211. Second guide rail; 212. Second slider; 3. Cable clamping mechanism; 31. Ω-shaped clamp; 32. Cable slide; 33. Second cylinder; 4. Welding head; 5. Pressure arm mechanism; 51. Arc pressure plate; 511. Opening; 52. Gear ring; 53. Drive motor; 54. Drive gear; 6. Controller; 7. Wiring terminal; 71. Welding part; 72. Arm; 8. Cable. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 2-4 As shown, this embodiment provides a terminal welding device for welding and fixing a cable conductor to the welding part 71 of a terminal 7, and pressing the two arms 72 of the terminal 7 together after welding. The terminal welding device includes a positioning clamp 1, a terminal alignment mechanism 2, a cable clamping mechanism 3, a welding head 4, and a pressing arm mechanism 5.

[0024] The positioning fixture 1 is provided with a positioning groove 11 extending in the left-right direction. The positioning groove 11 is used to place the terminal block 7 and the cable 8. The positioning groove 11 includes a terminal positioning section 111 and a cable positioning section 112. The terminal positioning section 111 is used to place the terminal block 7, and the cable positioning section 112 is used to place the cable 8. The width of the terminal positioning section 111 is larger than the width of the cable positioning section 112, so as to adapt to the outer dimensions of the terminal block 7 and the cable 8 respectively, so that the terminal block 7 and the cable 8 can be supported and guided in sections within the same positioning groove 11.

[0025] An arc-shaped baffle 12 is provided within the positioning groove 11, located at the boundary between the terminal positioning section 111 and the cable positioning section 112. The arc-shaped baffle 12 is used to restrict the relative proximity of the terminal 7 and the cable 8. Specifically, the side of the arc-shaped baffle 12 facing the terminal positioning section 111 abuts against the end of the terminal 7, and the side of the arc-shaped baffle 12 facing the cable positioning section 112 abuts against the end of the insulation layer of the cable 8. With the above arrangement, when the terminal 7 and the cable 8 approach the arc-shaped baffle 12, the arc-shaped baffle 12 can form a common positioning reference for both, so that the terminal 7 and the cable 8 form a stable relative position before welding. Preferably, the width of the arc-shaped baffle 12 is smaller than the width of the cable positioning section 112.

[0026] The terminal alignment mechanism 2 includes two levers 21, which are respectively disposed on the front and rear sides of the positioning groove 11. The two levers 21 can move towards each other to a working position corresponding to the two arms 72 of the terminal 7, and can also move left and right, thereby moving the terminal 7 along the positioning groove 11 to below the welding head 4 by acting on the two arms 72 or the base of the arms 72. Therefore, the operator only needs to place the terminal 7 into the positioning groove 11, without needing to accurately place the terminal 7 directly below the welding head 4 at once; subsequent alignment and lateral feeding of the terminal 7 can be completed using the two levers 21.

[0027] In one specific structure, the terminal alignment mechanism 2 further includes a base plate 23. Two first guide rails 24 distributed along the front-rear direction are provided on the base plate 23. Each first guide rail 24 has a first slider 27 fitted onto it. Racks 29 are connected to the first sliders 27 on both the front and rear sides via fixing blocks 28. The toothed sides of the two racks 29 face each other. An intermediate gear 210 meshes with the two racks 29 between the two first guide rails 24. The two fixing blocks 28 are respectively equipped with the aforementioned levers 21, which face each other. An alignment cylinder 22 is installed on the base plate 23. The piston rod of the alignment cylinder 22 is connected to one of the racks 29. When the alignment cylinder 22 drives one rack 29 to move, that rack 29 drives the other rack 29 to move synchronously in the opposite direction via the intermediate gear 210, thereby causing the two levers 21 to move towards each other or away from each other. When the two toggle blocks 21 move toward each other, they can move to the working position corresponding to the two arms 72 of the terminal 7; when the two toggle blocks 21 move away from each other, they can release the terminal 7 so that the terminal 7 can be removed after soldering.

[0028] The terminal alignment mechanism 2 also includes a transverse sliding seat 25, on which two second guide rails 211 distributed in the left-right direction are provided. A second slider 212 cooperating with the second guide rails 211 is provided on the bottom surface of the base plate 23. A first cylinder 26 is mounted on the transverse sliding seat 25, and the piston rod of the first cylinder 26 is connected to the base plate 23. The first cylinder 26 is used to drive the base plate 23, the two levers 21 in the terminal alignment mechanism 2, and the terminal 7 acted upon by the two levers 21 to move in the left-right direction. When the two levers 21 move to the working position corresponding to the two arms 72 of the terminal 7, the first cylinder 26 drives the base plate 23 to move relative to the transverse sliding seat 25, causing the two levers 21 to move the terminal 7 along the positioning groove 11 until the terminal 7 reaches the welding position below the welding head 4.

[0029] The cable clamping mechanism 3 includes an Ω-shaped clamp 31 disposed on one side of the positioning clamp 1. The Ω-shaped clamp 31 is used to elastically clamp the cable 8 and can move in the left and right direction to bring the cable 8 closer to the terminal 7. In one specific structure, the Ω-shaped clamp 31 is mounted on a cable slide 32, and the cable slide 32 is connected to a second cylinder 33. The second cylinder 33 is used to drive the cable slide 32, the Ω-shaped clamp 31, and the cable 8 clamped by the Ω-shaped clamp 31 to move in the left and right direction. In use, the operator inserts the cable 8 into the Ω-shaped clamp 31, and the Ω-shaped clamp 31 elastically clamps the cable 8; then the second cylinder 33 drives the cable slide 32 to move, so that the cable 8 moves along the cable positioning section 112 closer to the terminal 7, and the end of the insulation layer of the cable 8 abuts against the arc-shaped baffle 12.

[0030] The welding head 4 is positioned above the positioning groove 11 and is used to weld and fix the cable conductor to the terminal 7 when the cable conductor extends into the welding part 71 of the terminal 7. The welding head 4 can be a solder welding head, or other welding mechanisms capable of welding and fixing the cable conductor to the terminal 7 can be used according to actual process requirements. During welding, the terminal 7 is moved to below the welding head 4 by two levers 21, and the cable 8 is moved to the position corresponding to the terminal 7 by the Ω-shaped clamp 31, so that the cable conductor extends into the welding part 71 of the terminal 7. Then the welding head 4 descends and completes the welding.

[0031] The pressure arm mechanism 5 includes an arc-shaped pressure plate 51 rotatably mounted on the positioning fixture 1, the arc-shaped pressure plate 51 having an opening 511. The arc-shaped pressure plate 51 is rotatable left and right, so that after the welding head 4 completes welding, the two arms 72 of the terminal 7 are pressed against the inner wall of the arc-shaped pressure plate 51. When the arc-shaped pressure plate 51 is in its initial position, the opening 511 faces upward towards the positioning groove 11 to avoid the insertion path of the terminal 7, the insertion path of the cable 8, and the removal path of the terminal 7 after welding.

[0032] In one specific structure, a gear ring 52 is provided on the back of the arc-shaped pressure plate 51, and a drive motor 53 is provided on the positioning fixture 1. A drive gear 54 is provided at the output end of the drive motor 53. The drive gear 54 meshes with the gear ring 52 to drive the arc-shaped pressure plate 51 to rotate left and right. The rotation axis of the arc-shaped pressure plate 51 is parallel to the positioning groove 11. After welding is completed, the drive motor 53 drives the drive gear 54 to rotate. The drive gear 54 drives the arc-shaped pressure plate 51 to rotate to one side through the gear ring 52, so that the inner wall of the arc-shaped pressure plate 51 presses against one arm 72 of the terminal 7. Subsequently, the drive motor 53 drives the arc-shaped pressure plate 51 to rotate to the other side in the opposite direction or at a preset angle, so that the inner wall of the arc-shaped pressure plate 51 presses against the other arm 72 of the terminal 7. After the arm is pressed, the drive motor 53 drives the arc-shaped pressure plate 51 back to the initial position, so that the opening 511 of the arc-shaped pressure plate 51 faces upwards of the positioning groove 11 again.

[0033] When the arc-shaped pressure plate 51 presses the two arms 72 of the terminal 7, the two levers 21 remain located on the front and rear sides of the terminal 7 to limit the deflection of the terminal 7 within the positioning groove 11. Because the arc-shaped pressure plate 51 exerts a certain lateral force on the terminal 7 when it rotates left and right to press the two arms 72 of the terminal 7, the two levers 21, continuously located on the front and rear sides of the terminal 7, can provide auxiliary limiting for the terminal 7, keeping it in a predetermined position within the positioning groove 11 during the pressing process.

[0034] In this embodiment, the terminal welding device further includes a controller 6, which is electrically connected to the welding head 4, the drive motor 53, the centering cylinder 22, the first cylinder 26, and the second cylinder 33. Further, when the first cylinder 26 and the second cylinder 33 are pneumatic actuators, the controller 6 can be electrically connected to the control valves of the first cylinder 26 and the second cylinder 33 to control their operation; when the centering cylinder 22 is a pneumatic actuator, the controller 6 can also be electrically connected to the control valve of the centering cylinder 22 to control its operation. The controller 6 is used to control the two toggle blocks 21 to move to the working positions corresponding to the two arms 72 of the terminal 7, control the first cylinder 26 to move the terminal 7 laterally to the welding position, control the second cylinder 33 to move the cable 8 laterally to the position abutting the arc-shaped baffle 12, control the welding head 4 to weld, and control the arc-shaped pressure plate 51 to press the two arms 72 of the terminal 7.

[0035] In use, the operator places the terminal 7 into the terminal positioning section 111 of the positioning groove 11 and inserts the cable 8 into the Ω-shaped clamp 31. Since the terminal 7 can be moved laterally by the two levers 21 and the cable 8 can be moved laterally by the Ω-shaped clamp 31, the operator does not need to accurately place the terminal 7 and the cable 8 into the final welding position in one go.

[0036] When the central cylinder 22 is activated, it drives one of the racks 29 to move. This rack 29, via the intermediate gear 210, drives the other rack 29 to move synchronously in the opposite direction. This causes the two racks 29 to drive the corresponding fixed block 28, the first slider 27, and the two levers 21 to move towards each other. The two levers 21 move to the working position corresponding to the two arms 72 of the terminal 7. Then, the first cylinder 26 drives the base plate 23 to move in the left and right direction. This causes the two levers 21 to move the terminal 7 along the positioning groove 11 through the action of the two arms 72 or the base of the arms 72 of the terminal 7. This moves the terminal 7 to below the welding head 4, and the end of the terminal 7 abuts against the side of the arc-shaped baffle 12 facing the terminal positioning section 111.

[0037] Subsequently, the second cylinder 33 drives the cable slide 32 to move in the left and right direction, so that the Ω-shaped clip 31 drives the cable 8 to approach the terminal 7 along the cable positioning section 112 until the end of the insulation layer of the cable 8 abuts against the side of the arc baffle 12 facing the cable positioning section 112. At this time, the cable conductor extends into the welding part 71 of the terminal 7.

[0038] Next, the welding head 4 descends to weld the cable conductor that extends into the welding part 71 of the terminal 7, thus fixing the cable conductor to the terminal 7. After welding is completed, the welding head 4 rises and leaves the welding position.

[0039] Subsequently, the drive motor 53 drives the arc-shaped pressure plate 51 to rotate left and right via the drive gear 54 and gear ring 52. The arc-shaped pressure plate 51 presses the two arms 72 of the terminal 7 against its inner wall. During the pressing process, the two levers 21 remain located on the front and rear sides of the terminal 7 to limit the deflection of the terminal 7 within the positioning groove 11. After the pressing is completed, the arc-shaped pressure plate 51 returns to its initial position, so that the opening 511 of the arc-shaped pressure plate 51 faces upward towards the positioning groove 11.

[0040] Finally, the center cylinder 22 reverses its action, causing the two toggle blocks 21 to move in opposite directions to release the terminal 7, and the Ω-shaped clamp 31 to release the cable 8. The operator then removes the terminal 7 and cable 8 assembly after the welding arm is completed, and proceeds to the next cycle.

[0041] Through the above structure and working process, this embodiment enables the terminal block 7 and the cable 8 to complete the placement, lateral movement, abutment positioning, welding and arm pressing operations within the same positioning fixture 1, reducing the need for manual continuous abutment of the cable 8 and terminal block 7, and ensuring that the arm pressing process after welding is completed under the same positioning reference.

Claims

1. A terminal welding device, characterized in that, It includes a positioning clamp (1), a terminal alignment mechanism (2), a cable clamping mechanism (3), a welding head (4), and a pressure arm mechanism (5); The positioning fixture (1) is provided with a positioning groove (11) extending in the left and right direction. The positioning groove (11) is used to place the wiring terminal (7) and the cable (8). An arc-shaped baffle (12) is provided in the positioning groove (11), and the arc-shaped baffle (12) is used to limit the relative proximity of the wiring terminal (7) and the cable (8); The terminal alignment mechanism (2) includes two levers (21) respectively disposed on the front and rear sides of the positioning groove (11). The two levers (21) can move towards each other to a working position corresponding to the two arms (72) of the terminal (7), and the two levers (21) can move in the left and right direction to drive the terminal (7) to move along the positioning groove (11) to below the welding head (4) by acting on the two arms (72) or the root of the arms (72) of the terminal (7). The cable clamping mechanism (3) includes an Ω-shaped clamp (31) disposed on one side of the positioning clamp (1). The Ω-shaped clamp (31) is used to elastically clamp the cable (8) and can move in the left and right directions to drive the cable (8) closer to the terminal (7). The welding head (4) is disposed above the positioning groove (11) and is used to weld and fix the cable conductor to the terminal (7) when the cable conductor extends into the welding part (71) of the terminal (7); The pressure arm mechanism (5) includes an arc pressure plate (51) rotatably mounted on the positioning fixture (1). The arc pressure plate (51) has an opening (511) and can rotate left and right so that after the welding head (4) is welded, the two arms (72) of the terminal (7) are pressed by the inner wall of the arc pressure plate (51). The two pry bars (21) are also used to keep the terminals (7) in front and behind when the arc plate (51) presses the two arms (72) of the terminal (7) against each other, so as to limit the deflection of the terminal (7) within the positioning groove (11).

2. The terminal welding device according to claim 1, characterized in that, The positioning groove (11) includes a terminal positioning section (111) and a cable positioning section (112). The width of the terminal positioning section (111) is greater than the width of the cable positioning section (112). The terminal positioning section (111) is used to place the terminal (7), and the cable positioning section (112) is used to place the cable (8). The arc-shaped baffle (12) is located at the boundary between the terminal positioning section (111) and the cable positioning section (112), and the width of the arc-shaped baffle (12) is less than the width of the cable positioning section (112).

3. The terminal welding device according to claim 1, characterized in that, The back of the arc-shaped pressure plate (51) is provided with a gear ring (52), and the positioning fixture (1) is provided with a drive motor (53). The output end of the drive motor (53) is provided with a drive gear (54). The drive gear (54) meshes with the gear ring (52) to drive the arc-shaped pressure plate (51) to rotate left and right. The rotation axis of the arc-shaped pressure plate (51) is parallel to the positioning groove (11).

4. The terminal welding device according to claim 1, characterized in that, The opening (511) of the arc-shaped pressure plate (51) faces the top of the positioning groove (11) when the arc-shaped pressure plate (51) is in the initial position, so as to avoid the insertion path of the terminal (7), the insertion path of the cable (8), and the removal path of the terminal (7) after welding.

5. The terminal welding device according to claim 3, characterized in that, The terminal centering mechanism (2) further includes a base plate (23). The base plate (23) is provided with two first guide rails (24) distributed in the front-back direction. Each of the first guide rails (24) is provided with a first slider (27). The first sliders (27) located on the front and back sides are respectively connected to racks (29) via fixing blocks (28). The toothed sides of the two racks (29) are arranged facing each other. An intermediate gear (210) is provided between the two first guide rails (24) to mesh with the two racks (29). The two fixing blocks (28) are respectively equipped with the push blocks (21), and the two push blocks (21) are arranged facing each other. A centering cylinder (22) is installed on the base plate (23). The piston rod of the centering cylinder (22) is connected to one of the racks (29).

6. The terminal welding device according to claim 5, characterized in that, It also includes a transverse sliding seat (25), on which two second guide rails (211) are provided, distributed in the left and right directions. The bottom surface of the base plate (23) is provided with a second slider (212) that cooperates with the second guide rails (211). A first cylinder (26) is installed on the transverse sliding seat (25), and the piston rod of the first cylinder (26) is connected to the base plate (23).

7. The terminal welding device according to claim 6, characterized in that, The Ω-shaped clamp (31) is mounted on the cable slide (32), and the cable slide (32) is connected to a second cylinder (33). The second cylinder (33) is used to drive the cable slide (32), the Ω-shaped clamp (31) and the cable (8) clamped by the Ω-shaped clamp (31) to move in the left and right direction.

8. The terminal welding device according to claim 7, characterized in that, It also includes a controller (6), which is electrically connected to the welding head (4), the drive motor (53), the centering cylinder (22), the first cylinder (26) and the second cylinder (33) respectively. The controller (6) is used to control the two toggle blocks (21) to move to the working position corresponding to the two arms (72) of the terminal (7), control the first cylinder (26) to drive the terminal (7) to move laterally to the welding position, control the second cylinder (33) to drive the cable (8) to move laterally to the position abutting the arc baffle (12), control the welding head (4) to weld, and control the arc pressure plate (51) to press the two arms (72) of the terminal (7).

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