A welding positioning device for galvanized steel strip production

Abstract

This invention relates to the field of galvanized steel strip welding technology. The invention discloses a welding positioning device for galvanized steel strip production, comprising a horizontal platform, a release frame on one side of the top of the horizontal platform, a laser cutting machine on the front side of the release frame (the laser cutting machine is tilted), a side seat on the side of the horizontal platform, a first drive motor at one end of the side seat, a lead screw rotatably connected to the output end of the first drive motor, the lead screw rotatably mounted on the side seat, a drag seat slidably connected to the lead screw, a rack fixedly connected above the side seat, and a control frame fixedly connected to the top of the drag seat. This device causes the two ends of the steel strip to curl and align with each other, aligning the beveled ends. A magnetic strip is used to limit the movement of the two ends of the steel strip, allowing for welding of the steel strip ends. In this operation, technicians are not required to continuously pull the steel strip and perform curling and aligning, effectively improving the efficiency of steel strip welding production.

Description

Technical Field

[0001] This invention relates to the field of galvanized steel strip welding technology, specifically a welding positioning device for galvanized steel strip production. Background Technology

[0002] Galvanized steel strip is a long strip of steel with a zinc coating on its surface. Its core advantages are excellent corrosion resistance, good formability and economy. It is one of the most widely used anti-corrosion steels in the industrial field.

[0003] In the steel strip welding production stage, the common technique is to cut a section of steel strip and butt its two ends on a welding platform for welding. For long and heavy steel strips, this is very difficult for operators to handle, resulting in low welding efficiency. To address this, we have proposed a welding positioning device for galvanized steel strip production to solve the above-mentioned defects. Summary of the Invention

[0004] The purpose of this invention is to provide a welding positioning device for the production of galvanized steel strip, thereby solving the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: It includes a horizontal platform, a release frame is provided on one side of the top of the horizontal platform, a laser cutting machine is provided on the front side of the release frame, the laser cutting machine is inclined, a side seat is provided on the side of the horizontal platform, a first drive motor is provided at one end of the side seat, a lead screw is rotatably connected to the output end of the first drive motor, the lead screw is rotatably mounted on the side seat, a drag seat is screwed onto the lead screw and slidably connected to the side seat, a rack is fixedly connected above the side seat, and a control frame is fixedly connected to the top of the drag seat;

[0005] An annular tube is fixedly connected to the outside of the control frame, and a clamping component is slidably disposed on the annular tube;

[0006] A rotating seat is rotatably connected to the axis of the control frame. A first locking tooth is axially slidably arranged on the rotating seat. A second locking tooth is movably engaged on the side of the first locking tooth. The second locking tooth is radially rotatably connected to the inside of the rotating seat.

[0007] The second locking tooth is fixedly connected to a gear on one side relative to the first locking tooth, and the gear meshes with a rack;

[0008] The outer side of the first toothed component abuts against a first spring, the first spring is movably sleeved on the rotating seat, and a swing arm is fixedly connected to the rotating seat. The end of the swing arm away from the rotating seat is hinged to the clamping component.

[0009] The first electric cylinder is fixedly installed on both sides of the surface of the rotating seat, and the output shaft of the first electric cylinder is connected to both sides of the first toothed component.

[0010] Preferably, a wedge block is telescopically provided on the upper surface of the control frame away from the end of the annular tube. The surface of the wedge block abuts against the swing arm. A second spring is provided at the connection between the control frame and the wedge block. One side of the second spring is fixedly connected to the control frame, and the other side is fixedly connected to the wedge block.

[0011] Preferably, a third spring is movably sleeved on the annular tube, and the end of the third spring away from the wedge block is fixedly connected to the end face of the annular tube. A bent arm is fixedly connected at the axis of the rotating seat, and the bent arm passes through the control frame. A connecting shaft is fixedly connected to the control frame through the wedge block.

[0012] Preferably, a positioning frame is fixedly connected to the horizontal platform near the laser cutting machine. A gravity roller is rotatably connected to one side of the bottom of the positioning frame, and a rotating arm is rotatably connected to one side of the axis of the positioning frame. A carrying component is fixedly connected to the bottom of the rotating arm, and a roller is provided on the carrying component.

[0013] Preferably, the positioning frame is provided with a second drive motor, the output end of the second drive motor is rotatably connected to a drive wheel, the side of the drive wheel is engaged with a first reversing wheel, the first reversing wheel is rotatably mounted on the positioning frame and is fixedly connected to an insert frame through the positioning frame, and the insert frame is movably inserted into the bent arm.

[0014] Preferably, the drive wheel is engaged with a second reversing wheel on one side relative to the first reversing wheel, and the second reversing wheel passes through the positioning frame and is fixedly connected to the top of the rotary arm.

[0015] Preferably, a second electric cylinder is fixedly installed inside the positioning frame. The output shaft of the second electric cylinder passes through the positioning frame and is fixedly connected to a support plate. The support plate is arc-shaped to adapt to the curvature of the steel strip splicing.

[0016] Preferably, two magnetic strips are symmetrically and parallelly arranged on the surface of the support plate, and the two magnetic strips are adapted to the curvature of the support plate.

[0017] Preferably, a synchronizing rod is fixedly connected to the output shaft of the second electric cylinder, and an inclined guide groove is provided through the synchronizing rod. A transmission shaft is slidably arranged in the inclined guide groove, and the transmission shaft is slidably connected to the positioning frame.

[0018] Preferably, a docking frame is fixedly connected to the top of the drive shaft. The docking frame is hollow inside, and limit openings are provided on both sides of the docking frame. The docking frame is movably engaged with the connecting shaft through the limit openings.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In this invention, a dragging seat is used to horizontally drag the steel strip to cut it to the required length for welding. After cutting, the dragging seat returns to its original position, and the transmission rotating seat and swing arm swing upward, causing the clamping component to bend one end of the steel strip upward. After being limited by the wedge block and disengaged by the first electric cylinder, the clamping component is positioned, completing the initial edge curling of one end of the steel strip. Then, the second drive motor drives the two reversing wheels on both sides to rotate in opposite directions, causing the clamping component and the carrying component to rotate synchronously, so that the two ends of the steel strip are curled and aligned with each other, and the beveled end faces are facing each other. With the help of magnetic strips, the two ends of the steel strip are limited, and the ends of the steel strip are welded together. In this operation, there is no need for technicians to continuously pull the steel strip and curl and align it, which effectively improves the efficiency of steel strip welding production. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a top-view and front-view orientation diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the control frame, annular tube, and clamping member of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the control frame, the bent arm, and the connecting shaft of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the first and second locking teeth of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the swing arm and the wedge block of the present invention;

[0027] Figure 7 This is a schematic diagram of the positioning frame and carrying component of the present invention;

[0028] Figure 8 This is a schematic diagram of the support plate and the synchronizing rod of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the drive wheel, the first reversing wheel, and the second reversing wheel of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the support plate, magnetic strip, and steel strip of the present invention in a curled state.

[0031] In the diagram: 1. Horizontal platform; 2. Release frame; 3. Laser cutter; 4. Side seat; 5. First drive motor; 6. Lead screw; 7. Traction seat; 8. Rack; 9. Control frame; 10. Ring tube; 11. Clamping component; 12. Rotary seat; 13. First locking gear; 14. Second locking gear; 15. Gear; 16. First spring; 17. Swing arm; 18. First electric cylinder; 19. Wedge block; 20. Second spring; 21. 21. Third spring; 22. Bent arm; 23. Connecting shaft; 24. Positioning frame; 25. Gravity roller; 26. Rotating arm; 27. Carrying component; 28. Second drive motor; 29. ​​Drive wheel; 30. First reversing wheel; 31. Insert frame; 32. Second reversing wheel; 33. Second electric cylinder; 34. Support plate; 35. Magnetic strip; 36. Synchronizing rod; 37. Inclined guide groove; 38. Transmission shaft; 39. Docking frame; 40. Limiting port. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1 to 10 The present invention provides a technical solution: including a horizontal platform 1, a release frame 2 is provided on one side of the top of the horizontal platform 1, a laser cutter 3 is provided on the front side of the release frame 2, the laser cutter 3 is inclined, a side seat 4 is provided on the side of the horizontal platform 1, a first drive motor 5 is provided at one end of the side seat 4, a lead screw 6 is rotatably connected to the output end of the first drive motor 5, the lead screw 6 is rotatably mounted on the side seat 4, a drag seat 7 is screwed onto the lead screw 6 and slidably connected to the side seat 4, a rack 8 is fixedly connected above the side seat 4, and a control frame 9 is fixedly connected to the top of the drag seat 7;

[0034] An annular tube 10 is fixedly connected to the outside of the control frame 9, and a clamping member 11 is slidably arranged on the annular tube 10;

[0035] In this embodiment, in the initial state, a coil of galvanized steel strip is assembled onto the release frame 2. The rollers of the steel strip can rotate on the release frame 2. The operator pulls the steel strip to move away from the release frame 2. First, the end of the steel strip is beveled. The steel strip passes under the laser cutting machine 3, passes through the interior of the carrying component 27 and the clamping component 11 respectively, and exposes the side of the clamping component 11, leaving a welding position. Then, the clamping component 11 is controlled to clamp the steel strip. In the initial state, the clamping component 11 is close to the carrying component 27. Both the carrying component 27 and the clamping component 11 are kept in a hanging state. After the steel strip is installed, the first drive motor 5 is started, and the towing seat 7 is moved forward through the lead screw 6.

[0036] A rotating seat 12 is rotatably connected to the axis of the control frame 9. A first locking tooth 13 is axially slidably arranged on the rotating seat 12. A second locking tooth 14 is movably engaged on the side of the first locking tooth 13. The second locking tooth 14 is radially rotatably connected to the inside of the rotating seat 12.

[0037] The second toothed component 14 is fixedly connected to a gear 15 on one side relative to the first toothed component 13, and the gear 15 meshes with the rack 8;

[0038] The outer side of the first toothed component 13 abuts against the first spring 16. The first spring 16 is movably sleeved on the rotating seat 12. A swing arm 17 is fixedly connected to the rotating seat 12. The end of the swing arm 17 away from the rotating seat 12 is hinged to the clamping component 11.

[0039] The first electric cylinder 18 is fixedly installed on both sides of the surface of the rotating base 12, and the output shaft of the first electric cylinder 18 is connected to both sides of the first toothed component 13.

[0040] In this embodiment, when the towing seat 7 moves, the steel belt is gradually pulled out from the release frame 2. During the movement, the gear 15 meshes with and rotates with the rack 8. During the process, according to the meshing relationship between the second locking tooth 14 and the first locking tooth 13, the second locking tooth 14 squeezes the first locking tooth 13, causing the first locking tooth 13 to compress the first spring 16. The first locking tooth 13 slides axially along the rotating seat 12, so that the first locking tooth 13 will not drive the rotating seat 12 to rotate. During the continuous movement of the control component driven by the towing seat 7, the clamping component 11 does not move, so that the steel belt is continuously dragged horizontally.

[0041] A wedge block 19 is telescopically provided on the upper surface of the control frame 9 away from the end of the annular tube 10. The surface of the wedge block 19 abuts against the swing arm 17. A second spring 20 is provided at the connection between the control frame 9 and the wedge block 19. One side of the second spring 20 is fixedly connected to the control frame 9, and the other side is fixedly connected to the wedge block 19.

[0042] A third spring 21 is movably sleeved on the annular tube 10. The end of the third spring 21 away from the wedge block 19 is fixedly connected to the end face of the annular tube 10. A bent arm 22 is fixedly connected at the axis of the rotating seat 12. The bent arm 22 passes through the control frame 9. A connecting shaft 23 is fixedly connected through the control frame 9 on the wedge block 19.

[0043] In this embodiment, when the distance the steel strip is dragged out meets the preset size, the laser cutting machine 3 cuts the steel strip at the far end. The first drive motor 5 controls the lead screw 6 to reverse, and the transmission drag seat 7 moves in the opposite direction. During the process, the gear 15 flips. According to the meshing relationship between the first locking tooth 13 and the second locking tooth 14, the first locking tooth 13, supported by the first spring 16, meshes tightly with the second locking tooth 14 and is driven to rotate. During the rotation of the first locking tooth 13, it drives the rotating seat 12 to rotate synchronously, and the bottom swing arm 17 swings upward. During the process, it drives the clamping member 11, which is hinged to it, to slide upward around the annular tube 10. The clamping member 11 causes one side of the steel strip to bend upward. Before passing the wedge block 19, the clamping member 11 compresses the third spring 21, and then passes the wedge block 19. 9. The wedge block 19 is squeezed into the inside of the control frame 9 and retracted. Then, the swing arm 17 passes through the wedge block 19. Under the action of the second spring 20, the wedge block 19 rebounds. At this time, the first electric cylinder 18 starts synchronously and its output axis retracts inward. It pulls back the first locking tooth 13 on both sides of the rotating seat 12 and disconnects its meshing with the second locking tooth 14. During the continued movement of the gear 15, the second locking tooth 14 is driven to rotate freely. After the swing arm 17 loses transmission, the third spring 21 squeezes the clamping member 11 and the wedge block 19 blocks the swing arm 17, so that the swing arm 17 drives the clamping member 11 to be limited in the area between the third spring 21 and the wedge block 19. At this time, one end of the steel strip remains relatively stationary with the control frame 9. One end of the steel strip completes half of the crimping operation. At the same time, the control frame 9 moves towards the positioning frame 24.

[0044] A positioning frame 24 is fixedly connected to the horizontal platform 1 near the laser cutting machine 3. A gravity roller 25 is rotatably connected to one side of the bottom of the positioning frame 24. A rotating arm 26 is rotatably connected to one side of the axis of the positioning frame 24. A carrying component 27 is fixedly connected to the bottom of the rotating arm 26. A roller is provided on the carrying component 27.

[0045] A second drive motor 28 is provided on the positioning frame 24. The output end of the second drive motor 28 is rotatably connected to a drive wheel 29. A first reversing wheel 30 is engaged on the side of the drive wheel 29. The first reversing wheel 30 is rotatably mounted on the positioning frame 24 and is fixedly connected to a frame 31 through the positioning frame 24. The frame 31 is movably inserted into the bent arm 22.

[0046] The drive wheel 29 is engaged with a second reversing wheel 32 on one side relative to the first reversing wheel 30. The second reversing wheel 32 passes through the positioning frame 24 and is fixedly connected to the top of the rotating arm 26.

[0047] The positioning frame 24 has a second electric cylinder 33 fixedly installed inside. The output shaft of the second electric cylinder 33 passes through the positioning frame 24 and is fixedly connected to a support plate 34. The support plate 34 is arc-shaped to adapt to the curvature of the steel strip splicing.

[0048] In this embodiment, when the control frame 9 moves to the same axis as the positioning frame 24, the drive of the drag seat 7 is stopped. Before this, the insertion frame 31 and the curved arm 22 are both horizontally arranged. When the curved arm 22 moves, it inserts into the interior of the insertion frame 31 to complete the docking. The connecting shaft 23 inserts into the docking frame 39. The second drive motor 28 drives the first reversing wheel 30 and the second reversing wheel 32 on both sides to rotate in opposite directions through the drive wheel 29. The first reversing wheel 30 and the second reversing wheel 32 drive the insertion frame 31 and the rotating arm 26 to rotate respectively. The insertion frame 31 rotates... When in motion, the bending arm 22 causes one end of the steel strip on the clamping member 11 to continue rotating around the annular tube 10, expanding the curvature of the coil. When the rotating arm 26 rotates, the carrying member 27 drives the other side of the steel strip to curl upward. Since the nearby gravity roller 25 presses the steel strip, the bottom side of the steel strip on this side does not undergo horizontal displacement during the curling process. After the rotating arm 26 and the insertion frame 31 have rotated, the two ends of the steel strip are gradually curled and move closer to each other, located in front of the support plate 34, completing the curling alignment of the two ends of the steel strip. At this time, the hypotenuses of the two ends of the steel strip are opposite each other.

[0049] Two magnetic strips 35 are symmetrically and parallelly arranged on the surface of the support plate 34, and the two magnetic strips 35 are adapted to the curvature of the support plate 34.

[0050] A synchronizing rod 36 is fixedly connected to the output shaft of the second electric cylinder 33. An inclined guide groove 37 is provided through the synchronizing rod 36. A transmission shaft 38 is slidably arranged in the inclined guide groove 37. The transmission shaft 38 is slidably connected to the positioning frame 24.

[0051] A docking frame 39 is fixedly connected to the top of the drive shaft 38. The docking frame 39 is hollow inside. Limiting ports 40 are opened through both sides of the docking frame 39. The docking frame 39 is movably engaged with the connecting shaft 23 through the limiting ports 40.

[0052] In this embodiment, the output axis of the second electric cylinder 33 is controlled to output outward, and the support plate 34 moves outward. The curvature formed by the support plate 34 is a perfect circle. When outputting outward, it slightly pushes and fits the two ends of the coiled steel strip. The magnetic strip 35 is adapted to the bevel of the steel strip end and fits the inner surface of the steel strip to complete the splicing and positioning of the two ends of the steel strip. The operator presses the two ends of the steel strip together and performs splicing and welding operations. At the same time as the support plate 34 outputs outward, the inclined guide groove 37 is pulled by the synchronous rod 36. The docking frame 39 pulls out the connecting shaft 23 inside through the limiting port 40. The inclined wedge block 19 cancels the limitation on the swing arm 17. After the splicing and welding is completed, the clamping member 11 is released. After the steel strip is removed from the clamping member 11 and the carrying member 27, the insertion frame 31 rotates to the horizontal position again so that the swing arm 17 will not be blocked by the inclined wedge block 19 when resetting, so as to perform the steel strip dragging and positioning operation again.

[0053] The method of use and advantages of the present invention: This welding positioning device for the production of galvanized steel strip operates as follows:

[0054] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown:

[0055] S1: The coiled galvanized steel strip is assembled on the release frame 2, and the end of the traction steel strip is beveled so that the steel strip passes through the carrying member 27 and the clamping member 11 in sequence. The steel strip is clamped by the clamping member 11, and the first drive motor 5 is started, which drives the drag seat 7 to move forward through the lead screw 6.

[0056] S2: During the forward movement of the drag seat 7, the gear 15 meshes and rotates with the rack 8. Under the one-way disengagement action of the first clamping tooth 13 and the second clamping tooth 14, the rotating seat 12 remains stationary and the clamping member 11 is fixed in posture, thus horizontally dragging and conveying the steel belt.

[0057] S3: When the steel strip drag length reaches the preset value, the steel strip is cut by the laser cutting machine 3, the control screw 6 reverses to drive the drag seat 7 to move back, the gear 15 reverses to drive the first clamping tooth 13 to mesh with the second clamping tooth 14, and drives the rotating seat 12 and the swing arm 17 to swing up, so that the clamping member 11 drives one end of the steel strip to bend upward, and is limited by the inclined wedge block 19 and disengaged by the first electric cylinder 18, positioning the clamping member 11 and completing the initial edge curling of one end of the steel strip;

[0058] S4: When the control frame 9 moves to the coaxial position with the positioning frame 24, it stops. The bent arm 22 docks with the insertion frame 31, and the connecting shaft 23 is inserted into the docking frame 39. The second drive motor 28 drives the two reversing wheels to rotate in opposite directions, which respectively drive the clamping part 11 and the carrying part 27 to rotate synchronously, so that the two ends of the steel strip are curled and aligned with each other, and the oblique cut end faces are opposite.

[0059] S5: The second electric cylinder 33 pushes the arc-shaped support plate 34 outward, and the magnetic strip 35 is used to achieve the splicing and positioning of the two ends of the steel strip, and the ends of the steel strip are spliced ​​and welded.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding positioning device for galvanized steel strip production, characterized in that, The system includes a horizontal platform (1), a release frame (2) is provided on one side of the top of the horizontal platform (1), a laser cutter (3) is provided on the front side of the release frame (2), the laser cutter (3) is inclined, a side seat (4) is provided on the side of the horizontal platform (1), a first drive motor (5) is provided at one end of the side seat (4), a lead screw (6) is rotatably connected to the output end of the first drive motor (5), the lead screw (6) is rotatably mounted on the side seat (4), a drag seat (7) is screwed onto the lead screw (6) and slidably connected to the side seat (4), a rack (8) is fixedly connected above the side seat (4), and a control frame (9) is fixedly connected to the top of the drag seat (7). An annular tube (10) is fixedly connected to the outside of the control frame (9), and a clamping member (11) is slidably arranged on the annular tube (10). The control frame (9) is rotatably connected to a rotating seat (12) at its axis. A first locking tooth (13) is axially slidably provided on the rotating seat (12). A second locking tooth (14) is movably engaged on the side of the first locking tooth (13). The second locking tooth (14) is radially rotatably connected to the inside of the rotating seat (12). The second toothed member (14) is fixedly connected to a gear (15) on one side relative to the first toothed member (13), and the gear (15) meshes with the rack (8); The outer side of the first toothed member (13) abuts against the first spring (16), the first spring (16) is movably sleeved on the rotating seat (12), and a swing arm (17) is fixedly connected to the rotating seat (12). The end of the swing arm (17) away from the rotating seat (12) is hinged to the clamping member (11). The first electric cylinder (18) is fixedly installed on both sides of the surface of the rotating seat (12), and the output shaft of the first electric cylinder (18) is connected to both sides of the first toothed component (13).

2. The welding positioning device for galvanized steel strip production according to claim 1, characterized in that: A wedge block (19) is telescopically provided on the upper surface of the control frame (9) away from the end of the annular tube (10). The surface of the wedge block (19) abuts against the swing arm (17). A second spring (20) is provided at the connection between the control frame (9) and the wedge block (19). One side of the second spring (20) is fixedly connected to the control frame (9), and the other side is fixedly connected to the wedge block (19).

3. The welding positioning device for galvanized steel strip production according to claim 1, characterized in that: A third spring (21) is movably sleeved on the annular tube (10). The end of the third spring (21) away from the wedge block (19) is fixedly connected to the end face of the annular tube (10). A bent arm (22) is fixedly connected at the axis of the rotating seat (12). The bent arm (22) passes through the control frame (9). A connecting shaft (23) is fixedly connected through the control frame (9) on the wedge block (19).

4. The welding positioning device for galvanized steel strip production according to claim 1, characterized in that: A positioning frame (24) is fixedly connected to the horizontal platform (1) near the laser cutting machine (3). A gravity roller (25) is rotatably connected to one side of the bottom of the positioning frame (24). A rotating arm (26) is rotatably connected to one side of the axis of the positioning frame (24). A carrying component (27) is fixedly connected to the bottom of the rotating arm (26). A roller is provided on the carrying component (27).

5. A welding positioning device for galvanized steel strip production according to claim 4, characterized in that: The positioning frame (24) is provided with a second drive motor (28), and the output end of the second drive motor (28) is rotatably connected to a drive wheel (29). The side of the drive wheel (29) is engaged with a first reversing wheel (30). The first reversing wheel (30) is rotatably mounted on the positioning frame (24) and is fixedly connected to a insertion frame (31) through the positioning frame (24). The insertion frame (31) is movably inserted into the bent arm (22).

6. A welding positioning device for galvanized steel strip production according to claim 5, characterized in that: The drive wheel (29) is engaged with a second reversing wheel (32) on one side relative to the first reversing wheel (30), and the second reversing wheel (32) passes through the positioning frame (24) and is fixedly connected to the top of the rotating arm (26).

7. A welding positioning device for galvanized steel strip production according to claim 6, characterized in that: The positioning frame (24) is internally fixedly installed with a second electric cylinder (33). The output shaft of the second electric cylinder (33) passes through the positioning frame (24) and is fixedly connected to a support plate (34). The support plate (34) is arc-shaped and is used to adapt to the curvature of the steel strip splicing.

8. A welding positioning device for galvanized steel strip production according to claim 7, characterized in that: The surface of the support plate (34) is symmetrically and parallelly provided with two magnetic strips (35), and the two magnetic strips (35) are adapted to the curvature of the support plate (34).

9. A welding positioning device for galvanized steel strip production according to claim 7, characterized in that: A synchronizing rod (36) is fixedly connected to the output shaft of the second electric cylinder (33). An inclined guide groove (37) is provided through the synchronizing rod (36). A transmission shaft (38) is slidably arranged in the inclined guide groove (37). The transmission shaft (38) is slidably connected to the positioning frame (24).

10. A welding positioning device for galvanized steel strip production according to claim 9, characterized in that: The top of the drive shaft (38) is fixedly connected to a docking frame (39). The docking frame (39) is hollow inside. Limiting ports (40) are opened through both sides of the docking frame (39). The docking frame (39) is movably engaged with the connecting shaft (23) through the limiting ports (40).

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