A semi-automatic electric arc welding device for power steel accessory production

Abstract

The application relates to the technical field of hoop processing, in particular to a semi-automatic electric arc welding equipment for electric steel accessory production, which comprises a fixing frame and an electric arc welding gun, and further comprises a servo motor, a driving mechanism, a moving plate, a supporting plate, a fixed plate, a longitudinal rack, a connecting mechanism and a push block; the servo motor is fixedly installed at one end of the fixing frame; the driving mechanism is connected with the servo motor; the moving plate and the supporting plate are both connected with the driving mechanism; the fixed plate is fixedly connected with the fixing frame; the connecting mechanism is connected with the longitudinal rack; the push block is connected with the connecting mechanism; when the servo motor is started, the driving mechanism controls the moving plate to move towards the fixed plate and the supporting plate is extruded by the hoop; when the supporting plate is extruded to move, the longitudinal rack moves synchronously and controls the push block to drive the reinforcing part to be attached to the hoop through the connecting mechanism; the moving plate controls the hoop to move towards the fixed plate to realize the clamping of the hoop; meanwhile, the push block controls the reinforcing part to move towards the hoop to realize the close attachment of the hoop and the reinforcing part, so that the welding effect is improved.

Description

Technical Field

[0001] This invention relates to the field of clamp processing technology, specifically to a semi-automatic arc welding equipment for the production of power steel fittings. Background Technology

[0002] "Power steel fittings," more commonly known in the industry as power hardware or iron accessories, are a general term for metal components used in power transmission and distribution lines to connect and secure conductors and protective equipment. Simply put, they play the role of "joints" and "skeleton" in the power grid, directly affecting the safe operation of the power system.

[0003] A clamp is a metal fastener used to secure pipes, cables, and other objects by tightening. Its core function is to achieve a stable connection through a mechanical structure. To enhance the stiffness and load-bearing capacity of the clamp, reinforcing ribs are often welded to both sides. However, existing automatic arc welding equipment for clamp processing still has many drawbacks and problems in practical applications. Regarding workpiece clamping, most equipment uses a single mechanical or hydraulic clamping method, which lacks flexibility in adjusting the clamping force. During high-speed rotation welding of the clamp, centrifugal force can easily cause the workpiece to loosen or shift, affecting the welding position accuracy and even causing welding defects.

[0004] To address the aforementioned problems, existing technologies offer a solution. For example, patent publication number CN121848916A provides an automatic arc welding device for processing wind turbine yaw brake discs, relating to the field of arc welding equipment technology. This device includes: a fixed base, a drive mechanism, and a clamping mechanism. The bottom end of the clamping mechanism is equipped with a power mechanism. The clamping mechanism includes: a support platform, a rotating cylinder, a piston disc, a sealing disc, and multiple clamping plates. A connecting frame is fixedly connected to the outer side of each clamping plate. A connecting rod is fixedly connected to one side of the connecting frame, and a sealing plate is fixedly connected to the other end of the connecting rod. Multiple circular grooves and bending holes are provided on the side wall of the rotating cylinder. The sealing plate is slidably connected within the circular grooves. This invention improves the hydraulic transmission efficiency and the stability of the clamping action by optimizing the guiding and sealing structure of the clamping mechanism. In the clamping mechanism, the connecting frame is slidably sleeved on the outside of the guide frame, providing precise guidance for the movement of the clamping plate, avoiding deviation or jamming during the movement of the clamping plate, ensuring that multiple clamping plates move synchronously, and achieving uniform clamping by adhering to the side wall of the brake disc. Although the existing device can simultaneously position the clamp and the reinforcing member and then weld them together, there is a large gap between the positioning devices of the clamp and the reinforcing member in order to facilitate the placement of the clamp and the reinforcing member. Then, the clamp and the reinforcing member are welded together manually. However, even a slight shaking of the device can easily cause a large gap to form between the clamp and the reinforcing member, thereby reducing the welding strength between the clamp and the reinforcing member.

[0005] To address this, a semi-automatic arc welding device for the production of power steel fittings is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a semi-automatic arc welding equipment for the production of power steel fittings, which solves the problems of loose fit between clamps and reinforcing parts and unstable welding quality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A semi-automatic arc welding device for producing power steel fittings includes a fixed frame and an arc welding gun, as well as a servo motor, a drive mechanism, a moving plate, a support plate, a fixed plate, a longitudinal rack, a connecting mechanism, and a push block. The servo motor is fixedly installed at one end of the fixed frame, and the drive mechanism is connected to the servo motor. The moving plate and the support plate are both connected to the drive mechanism. The fixed plate is fixedly connected to the fixed frame. The longitudinal rack is fixedly installed at one end of the fixed plate, and the connecting mechanism is connected to the longitudinal rack. The push block is connected to the connecting mechanism. When the servo motor starts, the drive mechanism controls the moving plate to move towards the fixed plate and apply a compressive force to the clamp. This compressive force is transmitted to the support plate through the clamp, causing it to move synchronously. When the support plate moves, the longitudinal rack moves synchronously and controls the push block through the connecting mechanism to drive the reinforcing member to fit against the clamp. The clamping action of the moving plate against the clamp and the pushing action of the push block against the reinforcing member are driven by the same compressive force source and are performed synchronously. When the clamp expands due to heat, the compressive force increases, and the pressing pressure of the push block against the reinforcing member increases synchronously, forming a thermally self-compensating effect.

[0008] Optionally, when clamping the clamp, the clamp can be placed directly on a fixed bearing device, and then manually adjusted in position before clamping with a clamping device. Alternatively, a moving plate can be used to move the clamp towards a fixed plate for clamping. However, if the former method is used, the clamp's position may not be guaranteed. If the clamp's position is not neat, it may prevent the clamp from fitting tightly with the reinforcement, thus reducing the welding effect between the clamp and the reinforcement. Therefore, the method of directly placing the clamp and then using an external clamping device to position and weld the clamp to the reinforcement is not adopted.

[0009] Preferably, the driving mechanism includes a reciprocating lead screw, a threaded block, a guide block, a guide rod, a connecting rod, a spring, and a limiting plate. The reciprocating lead screw is fixedly installed at the output end of the servo motor. The threaded block is threadedly connected to the reciprocating lead screw. The moving plate is fixedly installed at the top of the threaded block. The guide block is fixedly installed at the bottom of the moving plate. The guide rod is slidably connected to the guide block. The connecting rod is slidably connected to the fixed plate. The spring is fixedly installed between the support plate and the fixed plate. The limiting plate is fixedly installed at one end of the connecting rod.

[0010] In the above scheme, the servo motor controls the reciprocating screw to rotate so as to drive the moving plate to move through the threaded block. At the same time, it drives the guide block to slide on the guide rod to achieve clamping of the clamp. During the clamping process, pressure is applied to the support plate, which drives the limit plate to move through the connecting rod. During the movement, the connecting rod compresses the spring.

[0011] Preferably, the fixing frame has a threaded groove and a guide groove inside. Two sets of guide grooves are symmetrically arranged around the threaded groove. The reciprocating screw and the threaded block are both installed in the threaded groove, and the guide block and the guide rod are both installed in the guide groove.

[0012] In the above scheme, space is provided for the movement of the reciprocating lead screw, threaded block and guide block, while keeping the movement of the moving plate balanced, avoiding imbalance when the moving plate clamps the clamp, thereby improving the stability of the clamping of the clamp by the cooperation of the fixed plate and the support plate.

[0013] Preferably, the sliding stroke of the guide block matches the thread lead of the threaded block. When the servo motor drives the reciprocating screw to rotate, the ratio of the moving distance of the clamp to the moving distance of the reinforcing member is fixed. The moving distance ratio is determined by the lead ratio of the driving screw and the connecting screw, so that the reinforcing member and the clamp stop synchronously at the end of the contact position.

[0014] In the above scheme, the moving plate and the push block always move at a proportional speed, so that the moving plate drives the clamp and the push block drives the reinforcing member to move at the same proportional speed. This enables the clamp and the reinforcing member to fit together at a relatively stable speed, thereby improving the tightness of the connection between the clamp and the reinforcing member.

[0015] Optionally, when connecting the reinforcing member and the clamp, the reinforcing member and the clamp can be fitted manually or mechanically controlled to move synchronously to achieve the fitting. If manual operation is used, gaps can easily appear between the reinforcing member and the clamp due to arm sway, which can reduce the welding effect. In addition, the current operation process mostly involves placing the clamp flat on the platform and then placing the reinforcing member vertically on the connecting lug of the clamp for welding. This can easily lead to tilted welding between the clamp and the connecting lug, thus reducing the welding effect. However, using mechanical control to move the reinforcing member and the clamp in opposite directions in the horizontal direction can not only avoid tilting during welding, but also improve the tightness of the fit between the reinforcing member and the clamp, thereby improving the welding effect. Therefore, mechanical adjustment of the clamp and reinforcing member fit is adopted.

[0016] Preferably, the connecting mechanism includes a main gear, a drive screw, a transverse rack, a secondary gear, a connecting screw, and a connecting block. The main gear meshes with the transverse rack, the drive screw is fixedly installed at one end of the main gear, the transverse rack is threadedly connected to the drive screw, the secondary gear meshes with the transverse rack, the connecting screw is fixedly installed at one end of the secondary gear, the connecting block is threadedly connected to the connecting screw, and the push block is fixedly installed at the top of the connecting block. The main gear and the secondary gear are arranged perpendicularly.

[0017] In the above scheme, when the longitudinal rack follows the movement of the limiting plate, it drives the drive screw to rotate through the main gear. When the drive screw rotates, it drives the transverse rack to move horizontally and drives the secondary gear to rotate. When the secondary gear rotates, it drives the connecting screw to rotate. When the connecting screw rotates, it drives the push block to move synchronously through the connecting block, so as to realize the pushing of the reinforcing member and the clamp to move in opposite directions.

[0018] Preferably, the fixed frame has a moving groove inside, and the connecting screw and the connecting block are both installed in the moving groove. The distance between the end of the moving groove near the center line of the fixed frame and the end of the threaded groove away from the center line of the fixed frame is equal to the thickness of the moving plate.

[0019] In the above scheme, the motion groove can provide movement space for the connecting screw and the connecting block. When the fixed plate, the support plate and the fixed plate cooperate to clamp the clamp, there is a gap between the end of the motion groove near the center line of the fixed frame and the straight part of the moving plate. The width of the gap is equal to the thickness of the straight part. This setting can make the reinforcing member fit with the clamp when the connecting block moves to the end of the motion groove near the center line of the fixed frame, thereby improving the welding effect of the clamp and the reinforcing member.

[0020] Preferably, the moving plate includes a straight portion and an arc portion. The straight portion is symmetrically arranged in two groups around the center line of the arc portion. The center line of the arc portion coincides with the center line of the threaded block. The support plate includes a pressure-bearing portion and a flat portion. The pressure-bearing portion is arc-shaped. The arc portion and the pressure-bearing portion are arranged correspondingly. The curvature value of the pressure-bearing portion is the same as the curvature value of the arc portion. When the moving plate moves towards the fixed plate, the clamp is automatically centered within the arc-shaped clamping surface.

[0021] Preferably, when the push block drives the reinforcing member to fit with the clamp, the squeezing force of the clamp on the support plate is greater than or equal to the fitting pressure of the reinforcing member on the clamp.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By controlling the moving plate to move towards the fixed plate, and by cooperating with the arc part and the pressure-bearing part, the clamping body is clamped. Since the arc part, the pressure-bearing part and the outer ring of the clamp form a three-point self-centering mechanism, the arc part, the pressure-bearing part and the clamping body are tightly fitted, which prevents the clamping body from loosening during welding, thereby improving the welding effect of the clamping body.

[0023] 2. The moving plate and the fixed plate work together to clamp the main body of the clamp while the reinforcing member moves towards the clamp by the push block. By controlling the clamp and the reinforcing member to move towards each other at a fixed ratio, a mutual squeezing force can be generated between the connecting ear of the clamp and the reinforcing member, thereby improving the tightness of the connection between the clamp and the reinforcing member, and thus improving the welding effect of the clamp and the reinforcing member.

[0024] 3. When the connecting lugs of the clamp and the reinforcing member undergo thermal deformation during welding, the clamp expands slightly due to heat, which will exert greater compressive force on the support plate. Through force transmission, the pressure of the push block on the reinforcing member will increase simultaneously, forming a thermally induced self-compensating effect, which will improve the stability of welding quality. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the drive mechanism of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 For the present invention Figure 3 A magnified structural diagram of A in the middle; Figure 5 This is a partial three-dimensional structural diagram of the connecting mechanism of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram of B in the diagram.

[0026] In the diagram: 1. Fixed frame; 2. Arc welding torch; 3. Servo motor; 4. Drive mechanism; 41. Reciprocating lead screw; 42. Threaded block; 43. Guide block; 44. Guide rod; 45. Connecting rod; 46. Spring; 47. Limiting plate; 48. Threaded groove; 49. Guide groove; 5. Moving plate; 51. Straight part; 52. Arc part; 6. Support plate; 61. Pressure bearing part; 62. Flat part; 7. Fixed plate; 8. Longitudinal rack; 9. Connecting mechanism; 91. Main gear; 92. Drive screw; 93. Horizontal rack; 94. Secondary gear; 95. Connecting screw; 96. Connecting block; 97. Motion groove; 10. Push block. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. However, the embodiments described below are only some embodiments of the present invention, and not all of them. If other embodiments are obtained by those skilled in the art without creative effort, they shall fall within the protection scope of the present invention.

[0028] Reference Figures 1 to 6A semi-automatic arc welding device for producing electric steel fittings includes a fixed frame 1 and an arc welding gun 2, as well as a servo motor 3, a drive mechanism 4, a moving plate 5, a support plate 6, a fixed plate 7, a longitudinal rack 8, a connecting mechanism 9, and a push block 10. The servo motor 3 is fixedly installed at one end of the fixed frame 1, and the drive mechanism 4 is connected to the servo motor 3. The moving plate 5 and the support plate 6 are both connected to the drive mechanism 4. The fixed plate 7 is fixedly connected to the fixed frame 1. The longitudinal rack 8 is fixedly installed at one end of the fixed plate 7, and the connecting mechanism 9 is connected to the longitudinal rack 8. The push block 10 is connected to the connecting mechanism 9. When the servo motor 3 starts, the drive mechanism 4 controls the moving plate 5 to move towards the fixed plate 7 and applies a squeezing force to the clamp. This squeezing force is transmitted to the support plate 6 through the clamp so that it moves synchronously. When the support plate 6 moves, the longitudinal rack 8 moves synchronously and controls the push block 10 through the connecting mechanism 9 to drive the reinforcing member to fit with the clamp. The clamping action of the moving plate 5 on the clamp and the pushing action of the push block 10 on the reinforcing member are driven by the same squeezing force source and are carried out synchronously. When the clamp is heated and expands, the squeezing force increases and the fitting pressure of the push block 10 on the reinforcing member increases synchronously, forming a thermo-induced self-compensation. The moving plate 5 includes a straight section 51 and an arc section 52. Two sets of straight sections 51 are symmetrically arranged around the center line of the arc section 52. The straight sections 51 support the connecting ears of the clamp, while the arc section 52 supports the main body of the clamp. This arrangement ensures a tight fit between the moving plate 5 and the clamp. The center line of the arc section 52 coincides with the center line of the threaded block 42, simultaneously supporting the connecting ears on both sides of the clamp. This provides uniform support from the moving plate 5, preventing the clamp from becoming unbalanced when clamped and providing dual-point bending support to resist bending deformation of the connecting ears caused by the lateral electromagnetic force of the welding arc. The two straight sections 51... 1. A symmetrical layout ensures that the line of action of the resultant force on the clamp always passes through its center, eliminating torque components and ensuring that the clamp has no angular rotation tendency when clamped. When the servo motor 3 drives the threaded block 42 to move axially along the reciprocating screw 41, the center line of the arc portion 52 of the moving plate 5 always coincides with the center line of the clamp, ensuring that the clamp only undergoes pure radial contraction during clamping, without axial movement or angular deflection. The support plate 6 includes a pressure-bearing part 61 and a flat part 62. The pressure-bearing part 61 is arc-shaped, and the arc portion 52 is correspondingly arranged with the pressure-bearing part 61. The pressure-bearing part 61 is designed to support the clamp and also provides support when the moving plate 5 squeezes the clamp. The curvature value of the arc portion 52 is consistent with that of the curved portion 52. Through the above arrangement, both the pressure-bearing portion 61 and the curved portion 52 can be tightly fitted with the main body of the clamp, thereby preventing the clamp from shaking during welding. The curved portion 52 of the moving plate 5 and the pressure-bearing portion 61 of the support plate 6 form an arc-shaped clamping surface with a curvature radius matching the outer diameter of the clamp. The arc-shaped clamping surface and the outer circle of the clamp constitute a three-point self-centering mechanism. When the clamp is placed into the clamping surface, it undergoes fine-tuning rolling in the initial stage of the moving plate 5's advancement, automatically correcting its axial offset and angular tilt. When the moving plate 5 moves towards the fixed plate 7, the clamp is automatically centered within the arc-shaped clamping surface. Rubber pads are provided on one side of both the curved portion 52 and the pressure-bearing portion 61. The rubber pads provide a cushioning effect, preventing damage to the clamp when the moving plate 5, support plate 6, and fixed plate 7 are pressing against it. This also prevents the clamp from deforming under excessive pressure. Furthermore, the rubber pads increase the friction between the clamp and the moving plate 5 and support plate 6, thus preventing displacement of the clamp due to slight external forces. When the push block 10 moves the reinforcing member to fit against the clamp, the clamp's pressing force on the support plate 6 is greater than or equal to the reinforcing member's fitting pressure on the clamp. Through these features, not only can the fit between the reinforcing member and the clamp be improved to offset the clamp loosening caused by welding heat deformation, but the reinforcing member can also be prevented from overloading the clamp, inducing plastic deformation of the clamp, and losing repeatability accuracy.

[0029] As one embodiment of the present invention, refer to Figure 2 , Figure 3 and Figure 5The drive mechanism 4 includes a reciprocating screw 41, a threaded block 42, a guide block 43, a guide rod 44, a connecting rod 45, a spring 46, and a limiting plate 47. The reciprocating screw 41 is fixedly installed at the output end of the servo motor 3. The threaded block 42 is threadedly connected to the reciprocating screw 41. The moving plate 5 is fixedly installed at the top of the threaded block 42. The guide block 43 is fixedly installed at the bottom of the moving plate 5. The guide rod 44 is slidably connected to the guide block 43. The connecting rod 45 is slidably connected to the fixed plate 7. The spring 46 is fixedly installed between the support plate 6 and the fixed plate 7. The spring 46 is designed to... The clamping mechanism provides flexible buffering during the initial clamping phase to prevent damage to the clamping surface. Simultaneously, its stiffness increases sharply after reaching steady-state clamping, maintaining a stable clamping force ripple coefficient and preventing momentary arc extinction caused by clamping force fluctuations. The limiting plate 47 is fixedly installed at one end of the connecting rod 45. The fixing frame 1 has a threaded groove 48 and a guide groove 49 inside. The threaded groove 48 provides space for the movement of the reciprocating screw 41 and the threaded block 42, while the guide groove 49 provides space for the guide block 43 and the guide rod 44. To improve the motion space, two sets of guide grooves 49 are symmetrically arranged around the threaded groove 48. The symmetrical layout of the double guide grooves 49 forms a natural force balance structure, which counteracts the overturning torque generated by unilateral drive and prevents the welding torch optical axis from shifting after long-term use. The reciprocating screw 41 and the threaded block 42 are both installed in the threaded groove 48, and the guide block 43 and the guide rod 44 are both installed in the guide groove 49. The sliding stroke of the guide block 43 matches the thread lead of the threaded block 42. Through the above settings, it is possible to ensure that the moving plate 5 returns precisely after each zeroing of the servo motor 3. Upon reaching the initial position, no external limit sensors such as photoelectric switches are required, avoiding the risk of reference loss due to sensor contamination or aging. When the servo motor 3 drives the reciprocating screw 41 to rotate, the ratio of the moving distance of the clamp to the moving distance of the reinforcing member is fixed. The moving distance ratio is determined by the lead ratio of the driving screw 92 and the connecting screw 95, so that the reinforcing member and the clamp stop synchronously at the end point of contact. Through the above settings, the movement of the clamp and the reinforcing member can be kept proportional, so that the moving plate 5 and the push block 10 stop moving just after the clamp and the reinforcing member are in contact.

[0030] As one embodiment of the present invention, refer to Figure 4 , Figure 5 and Figure 6The connecting mechanism 9 includes a main gear 91, a drive screw 92, a horizontal rack 93, a secondary gear 94, a connecting screw 95, and a connecting block 96. The main gear 91 meshes with the horizontal rack 93. The drive screw 92 is fixedly installed at one end of the main gear 91. The horizontal rack 93 is threadedly connected to the drive screw 92 and slidably connected to the fixed frame 1. Through the above arrangement, the horizontal movement of the horizontal rack 93 can be guided and limited when the drive screw 92 rotates. The secondary gear 94 meshes with the horizontal rack 93. The connecting screw 95 is fixedly installed at one end of the secondary gear 94. The connecting block 96 is threadedly connected to the connecting screw 95. The push block 10 is fixedly installed at the top of the connecting block 96. The fixed frame 1 has a motion groove 97 inside. The connecting screw 95 and the connecting block 96 are both installed in the groove. The moving plate 5 is installed in the moving groove 97. The distance between the end of the moving groove 97 near the center line of the fixed frame 1 and the end of the threaded groove 48 away from the center line of the fixed frame 1 is equal to the thickness of the moving plate 5. With the above setting, the gap can be limited when the threaded block 42 moves to the end of the threaded groove 48 away from the center line of the fixed frame 1 and the connecting block 96 moves to the end near the center line of the fixed frame 1. At this time, the gap is consistent with the thickness of the clamp. With the above setting, the reinforcing member and the clamp can be tightly fitted. The setting of the moving groove 97 provides space for the movement of the connecting screw 95 and the connecting block 96. The main gear 91 and the secondary gear 94 are set perpendicularly. With the above setting, the direction of the force can be converted, thereby facilitating the synchronous movement of the moving plate 5 and the push block 10.

[0031] Working principle: When in use, the user puts the clamp into contact with the pressure-bearing part 61 of the support, and places the reinforcing member inside the push block 10. Then, the servo motor 3 is started. When the servo motor 3 is started, it drives the reciprocating screw 41 to rotate. When the reciprocating screw 41 rotates, it drives the moving plate 5 to move towards the clamp through the threaded block 42. At this time, the threaded block 42 moves from one end of the threaded groove 48 to the other end. When the moving plate 5 moves, it drives the guide block 43 to slide synchronously on the guide rod 44. When the arc part 52 of the moving plate 5 is in contact with the clamp, as the moving plate 5 continues to move, the moving plate 5 applies pressure to the clamp. Under the action of pressure, it drives the support plate 6 to move synchronously. At the same time, the support plate 6 moves synchronously through the connecting rod 45, which drives the limiting plate 47 to move synchronously and compresses the spring 46. When the limiting plate 47 moves, it drives the longitudinal rack 8 to move synchronously. When the longitudinal rack 8 moves, it drives the main gear 91 to rotate. When the main gear 91 rotates, it drives the drive screw 92 to rotate. When the drive screw 92 rotates, it controls the horizontal rack 93 to move horizontally. When the horizontal rack 93 moves, it drives the secondary gear 94 to rotate. When the secondary gear 94 rotates, it drives the connecting screw 95 to rotate. When the connecting screw 95 rotates, it drives the push block 10 to move towards the clamp through the connecting block 96. When the push block 10 moves, it drives the reinforcing member to fit into the clamp. Then, the reinforcing member and the clamp are welded by the arc welding gun 2. After welding is completed, servo motor 3 continues to start. At this time, threaded block 42 moves from the end of threaded groove 48 close to fixed plate 7 to the end away from fixed plate 7. At this time, support plate 6 is reset under the action of spring 46 to facilitate the next welding.

[0032] Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, those skilled in the art can make changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention. The appended claims and their equivalents define the scope of the present invention.

Claims

1. A semi-automatic arc welding device for the production of power steel fittings, comprising a fixed frame (1) and an arc welding torch (2), characterized in that: It also includes a servo motor (3), a drive mechanism (4), a moving plate (5), a support plate (6), a fixed plate (7), a longitudinal rack (8), a connecting mechanism (9), and a push block (10). The servo motor (3) is fixedly installed at one end of the fixed frame (1). The drive mechanism (4) is connected to the servo motor (3). The moving plate (5) and the support plate (6) are both connected to the drive mechanism (4). The fixed plate (7) is fixedly connected to the fixed frame (1). The longitudinal rack (8) is fixedly installed at one end of the fixed plate (7). The connecting mechanism (9) is connected to the longitudinal rack (8). The push block (10) is connected to the connecting mechanism (9). When the servo motor (3) starts, the drive mechanism (4) controls the moving plate (5) to move toward the fixed plate (7) and applies a squeezing force to the clamp. This squeezing force is transmitted to the support plate (6) through the clamp so that it moves synchronously. When the support plate (6) moves, the longitudinal rack (8) moves synchronously and controls the push block (10) through the connecting mechanism (9) to drive the reinforcing member to fit with the clamp. The clamping action of the moving plate (5) on the clamp and the pushing action of the push block (10) on the reinforcing member are driven by the same squeezing force source and are carried out synchronously. When the clamp is heated and expands, the squeezing force increases and the fitting pressure of the push block (10) on the reinforcing member increases synchronously, forming a thermal self-compensation.

2. The semi-automatic arc welding equipment for the production of power steel fittings according to claim 1, characterized in that: The drive mechanism (4) includes a reciprocating screw (41), a threaded block (42), a guide block (43), a guide rod (44), a connecting rod (45), a spring (46), and a limiting plate (47). The reciprocating screw (41) is fixedly installed at the output end of the servo motor (3). The threaded block (42) is threadedly connected to the reciprocating screw (41). The moving plate (5) is fixedly installed at the top of the threaded block (42). The guide block (43) is fixedly installed at the bottom of the moving plate (5). The guide rod (44) is slidably connected to the guide block (43). The connecting rod (45) is slidably connected to the fixed plate (7). The spring (46) is fixedly installed between the support plate (6) and the fixed plate (7). The limiting plate (47) is fixedly installed at one end of the connecting rod (45).

3. The semi-automatic arc welding equipment for the production of power steel fittings according to claim 2, characterized in that: The fixing frame (1) has a threaded groove (48) and a guide groove (49) inside. The guide groove (49) is symmetrically arranged in two sets with the threaded groove (48) as the center. The reciprocating screw (41) and the threaded block (42) are both installed in the threaded groove (48), and the guide block (43) and the guide rod (44) are both installed in the guide groove (49).

4. The semi-automatic arc welding equipment for the production of power steel fittings according to claim 3, characterized in that: The sliding stroke of the guide block (43) matches the thread lead of the threaded block (42). When the servo motor (3) drives the reciprocating screw (41) to rotate, the ratio of the moving distance of the clamp to the moving distance of the reinforcing member is fixed. The moving distance ratio is determined by the lead ratio of the driving screw (92) and the connecting screw (95), so that the reinforcing member and the clamp stop synchronously at the end of the fit.

5. The semi-automatic arc welding equipment for the production of power steel fittings according to claim 1, characterized in that: The connecting mechanism (9) includes a main gear (91), a drive screw (92), a rack (93), a secondary gear (94), a connecting screw (95), and a connecting block (96). The main gear (91) meshes with the rack (93). The drive screw (92) is fixedly installed at one end of the main gear (91). The rack (93) is threadedly connected to the drive screw (92). The secondary gear (94) meshes with the rack (93). The connecting screw (95) is fixedly installed at one end of the secondary gear (94). The connecting block (96) is threadedly connected to the connecting screw (95). The push block (10) is fixedly installed at the top of the connecting block (96). The main gear (91) and the secondary gear (94) are arranged perpendicularly.

6. The semi-automatic arc welding equipment for the production of power steel fittings according to claim 5, characterized in that: The fixed frame (1) has a motion groove (97) inside. The connecting screw (95) and the connecting block (96) are both installed in the motion groove (97). The distance between the end of the motion groove (97) near the center line of the fixed frame (1) and the end of the threaded groove (48) away from the center line of the fixed frame (1) is equal to the thickness of the moving plate (5).

7. The semi-automatic arc welding equipment for the production of power steel fittings according to claim 1, characterized in that: The moving plate (5) includes a straight part (51) and an arc part (52). The straight part (51) is symmetrically arranged in two sets with the center line of the arc part (52). The center line of the arc part (52) coincides with the center line of the threaded block (42). The support plate (6) includes a pressure-bearing part (61) and a flat part (62). The pressure-bearing part (61) is arc-shaped. The arc part (52) and the pressure-bearing part (61) are arranged correspondingly. The curvature value of the pressure-bearing part (61) is consistent with the curvature value of the arc part (52). The arc part (52) of the moving plate (5) and the pressure-bearing part (61) of the support plate (6) form an arc-shaped clamping surface with a curvature radius matching the outer diameter of the clamp. When the moving plate (5) moves toward the fixed plate (7), the clamp is automatically centered in the arc-shaped clamping surface.

8. The semi-automatic arc welding equipment for the production of power steel fittings according to claim 1, characterized in that: When the pusher (10) causes the reinforcing member to fit with the clamp, the squeezing force of the clamp on the support plate (6) is greater than or equal to the fitting pressure of the reinforcing member on the clamp.

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