A positioning auxiliary device for nut spot welding operation

Abstract

The present invention discloses a positioning auxiliary device for nut spot welding operations, which relates to the technical field of spot welding operations. The present invention aims to solve the problems that the nut spot welding operation process cannot adapt to the positioning requirements of special-shaped or different-thickness plate workpieces and does not have the dynamic compensation function for workpiece displacement during the welding process; on the one hand, the lateral movement of the nut workpiece to be welded is completed by actively regulating, and the progressive movement of the nut workpiece to be welded is constituted by a displacement component, thereby realizing continuous displacement spot welding operations during the nut spot welding process; on the other hand, the support of the nut workpiece to be welded is jointly completed by a supporting component with adjustable spacing; the position of the nut workpiece to be welded during the welding action is adjusted with the assistance of an intelligent positioning module, so that the nut workpiece to be welded and the electrode rod are adaptively aligned, so as to achieve precise alignment for welding with excessive feed and feed difference limit, and realize intelligent regulation of the nut spot welding operation.

Description

Technical Field

[0001] The invention relates to the technical field of spot welding processing, and in particular to a positioning auxiliary device used for nut spot welding processing operations. Background Art

[0002] In the fields of automobile manufacturing, hardware processing, etc., the resistance spot welding process of nuts and workpieces is widely used. In the existing technology, nut spot welding equipment (such as patent publication number CN203064677U4) usually uses a vibrating plate and a feeding track to achieve precise positioning and transportation of nuts, while the positioning of the workpiece (such as a metal sheet) relies on manual operation. For example, the operator needs to manually place the workpiece on the surface of the lower electrode and adjust the contact position between the workpiece and the nut. This method has the following technical defects; 1. Low positioning accuracy: When manually holding the workpiece, it is easy to offset or shake, resulting in deviation in the nut welding position, affecting the product qualification rate; 2. Safety hazards: The operator needs to be in close contact with the electrode and moving parts, and there is a risk of mechanical pinching or arc burns;

[0003] Existing improvement solutions mostly focus on optimizing nut conveying. Although some devices have introduced simple clamping structures (such as patent publication number CN113245683A), their application range is narrow and they cannot adapt to the positioning requirements of special-shaped workpieces or plates of different thicknesses. In addition, traditional clamping devices lack real-time detection functions and cannot dynamically compensate for workpiece displacement during welding, which can easily lead to cold welds or insufficient weld strength.

[0004] For this purpose, this application proposes a solution. Summary of the Invention

[0005] The purpose of the present invention is to provide a positioning auxiliary device for nut spot welding operations, which is used to solve the problems that the existing nut spot welding process cannot adapt to the positioning requirements of special-shaped or different thickness plate workpieces and does not have the dynamic compensation function for workpiece displacement during welding.

[0006] The objectives of the present invention can be achieved through the following technical solutions: a positioning auxiliary device for nut spot welding processing operations, comprising a base plate, a control panel embedded in the base plate, a front feed box and a rear feed box symmetrically arranged above the base plate, a displacement assembly arranged in the front feed box and the rear feed box, the displacement assembly comprising a rotatably arranged displacement bracket, an initial state of a pair of the displacement brackets being horizontally arranged in the front feed box and the rear feed box respectively, a pair of the displacement brackets being jointly used for position adjustment of the workpiece to be welded; a welding table is arranged between the front feed box and the rear feed box, and electrode rods are evenly distributed on the welding table; a guide screw is jointly installed in the middle of the front feed box and the rear feed box, and the guide screws correspond to the front feed box and the rear feed box in opposite directions, and when the guide screws rotate, they drive the front feed box and the rear feed box to be closer or farther away.

[0007] It is further configured as follows: a drive and change assembly is installed below the base plate corresponding to the front feed box and the rear feed box, the drive and change assembly includes a steering seat, a motor 1 is installed on the inner side of the steering seat, the output end of the motor 1 is connected to a swing rod, and the upper end of the swing rod is rotatably installed with a fixed rod respectively connected to the bottom of the front feed box and the rear feed box.

[0008] It is further configured as follows: a guide hole is opened on the steering seat, a guide rod is installed on the steering seat through the guide hole, a second motor is installed on the inner side of the guide rod, and a driving tooth and a transmission rod connected to the displacement bracket are continuously installed on the output end of the second motor.

[0009] It is further configured as follows: connecting rod seats are installed at both ends of the front feed box and the rear feed box, a support rod is passed through the connecting rod seats on the same side, and side connecting rods connected to the base plate are installed at both ends of the support rod.

[0010] It is further configured as follows: a motor three is installed at one end of the guide screw rod, and a middle connecting rod connected to the base plate is installed at the lower end of the motor three.

[0011] It is further configured that the longitudinal rods of the side connecting rods and the middle connecting rod are all arranged parallel to the swing rod, and the single rod lengths of the side connecting rods, the middle connecting rod and the swing rod are the same.

[0012] It is further configured as follows: a receiving plate is installed at the end of each of the front feed box and the rear feed box, and a guide block is installed on the outer side of the receiving plate close to the second motor.

[0013] It is further configured as follows: a straight gear rod meshing with the driving teeth is slidably mounted on the guide block, an inwardly facing cooling box is mounted on one end of the straight gear rod away from the guide block, and an air blast port connected to the blower is opened on the inner side of the cooling box.

[0014] It is further configured that: a positioning module is provided in the control panel, and the positioning module includes a communication-connected orientation detection unit, a position correction analysis unit, a hole position alignment execution unit and a processor;

[0015] The orientation detection unit is used to collect the conveying deflection value SP of the screw hole of the workpiece to be welded within the time threshold and obtain the rotation feed value XJ of the displacement bracket within the time threshold, and send the conveying deflection value SP and the rotation feed value XJ to the alignment correction analysis unit via the processor. After receiving the conveying deflection value SP and the rotation feed value XJ, the alignment correction analysis unit obtains the deflection coefficient PJ through numerical calculation, and compares the deflection coefficient PJ with the preset deflection standard value PJy for analysis and sends it to the hole alignment execution unit;

[0016] The hole position alignment execution unit controls related components to perform actions according to the signal generated by the alignment correction analysis unit.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention addresses the problem that the existing nut spot welding process cannot adapt to the positioning requirements of special-shaped or different-thickness plate workpieces and does not have the dynamic compensation function for workpiece displacement during the welding process; on the one hand, the lateral movement of the nut workpiece to be welded is completed by actively controlling the lateral movement of the nut workpiece to be welded, and the progressive movement of the nut workpiece to be welded is formed by the displacement component, thereby realizing the completion of continuous displacement spot welding operation during the nut spot welding process; on the other hand, the support of the nut workpiece to be welded is completed by the support component with adjustable spacing, thereby adapting to workpieces of different sizes for corresponding spot welding processing; finally, under the comprehensive mutual matching of the two, the purpose of adaptive continuous spot welding processing of adaptable special-shaped and different-sized workpieces is achieved; it can also be assisted by an intelligent positioning module to adjust the position of the nut workpiece to be welded during the welding action, so that the adaptive matching between the nut workpiece to be welded and the electrode rod is achieved, so as to achieve precise alignment for welding with excessive feed and feed difference, and realize intelligent control of the nut spot welding operation; finally, under the comprehensive mutual matching of the two, the purpose of adaptive continuous spot welding processing of adaptable special-shaped and different-sized workpieces is achieved, and the efficiency of nut spot welding processing is intelligently improved through dynamic compensation action;

[0019] 2. In the dynamic compensation control action, during the continuous feeding process of the workpiece to be welded, if an overfeed signal is received, it means that the current nut workpiece to be welded has an "overfeed" phenomenon; if an underfeed signal is received, it means that the current nut workpiece to be welded has a "feed limit" phenomenon. At this time, the position-shifting bracket drives the nut workpiece to be welded to form a screw hole corresponding to the electrode rod to complete the precise alignment, and then the forward and reverse rotation of the front feed box and the rear feed box are combined to complete the precise alignment between the screw hole on the nut workpiece to be welded and the electrode rod, thereby achieving precise nut welding;

[0020] 3. During the spot welding operation, while following the active regulation, motor three will drive the straight gear rod to move horizontally through the driving teeth, and then drive the cooling box connected to the blower to move horizontally. The air blast on the cooling box is always facing the nut workpiece to be welded on the front feed box and the rear feed box, and completes the air blowing cooling, thereby improving the forming efficiency of nut welding in this process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a side view schematic diagram of the present invention;

[0024] Figure 3 A bottom view of the structure of the displacement assembly of the present invention;

[0025] Figure 4 Schematic diagram of the disassembled structure of the displacement assembly of the present invention;

[0026] Figure 5 Schematic diagram of the installation of the guide screw of the present invention;

[0027] Figure 6 is a side sectional view of the present invention;

[0028] Figure 7 This is a schematic diagram of the installation of the cooling box of the present invention;

[0029] Figure 8 It is a schematic diagram of the steering of the displacement bracket of the present invention.

[0030] In the figure: 1. Base plate; 2. Steering seat; 3. Front feed box; 4. Rear feed box; 5. Positioning bracket; 6. Welding table; 7. Electrode rod; 8. Side connecting rod; 9. Support rod; 10. Guide hole; 11. Motor 1; 12. Swing rod; 13. Fixed rod; 14. Motor 2; 15. Transmission rod; 16. Adapter plate; 17. Motor 3; 18. Guide wire rod; 19. Middle connecting rod; 20. Connecting rod seat; 21. Cooling box; 22. Guide rod; 23. Drive gear; 24. Straight gear rod; 25. Guide block. DETAILED DESCRIPTION

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] In order to solve the problem that the existing nut spot welding process cannot adapt to the positioning requirements of special-shaped or different thickness plate workpieces, the following technical solutions are proposed:

[0034] Reference Figure 1 - Figure 8 As shown, in this embodiment, a positioning auxiliary device for nut spot welding processing operations includes a base plate 1, a front feed box 3 and a rear feed box 4 are symmetrically arranged above the base plate 1, a displacement assembly is arranged in the front feed box 3 and the rear feed box 4, and the displacement assembly includes a rotatably arranged displacement bracket 5, an initial state of a pair of displacement brackets 5 is respectively horizontally arranged in the front feed box 3 and the rear feed box 4, and a pair of displacement brackets 5 are used together for position adjustment of the workpiece to be welded; a welding table 6 is arranged between the front feed box 3 and the rear feed box 4, and electrode rods 7 are evenly distributed on the welding table 6; the front feed box 3 and the rear feed box 4 are respectively horizontally arranged in the front feed box 3 and the rear feed box 4, and the pair of displacement brackets 5 are used together for position adjustment of the workpiece to be welded; a welding table 6 is arranged between the front feed box 3 and the rear feed box 4, and electrode rods 7 are evenly distributed on the welding table 6; A guide screw 18 is installed in the middle of the box 3 and the rear progressive box 4. The thread directions of the guide screw 18 are opposite to those of the front progressive box 3 and the rear progressive box 4. When the guide screw 18 rotates, the front progressive box 3 and the rear progressive box 4 are driven to move closer or farther away. When adjusting the position of the workpiece to be welded, the guide screw 18 drives the front progressive box 3 and the rear progressive box 4 to move closer or farther away through the meshing transmission relationship of the opposite thread directions, thereby changing the distance between the front progressive box 3 and the rear progressive box 4, and then realizing the adaptive installation of workpieces to be welded of different sizes.

[0035] It should be noted that a control panel is embedded on the base plate 1, and a photoelectric sensor and an infrared sensor are provided above the positioning auxiliary device for obtaining the moving distances of the front feed box 3 and the rear feed box 4 and the coordinate values ​​of the screw hole positions on the workpiece to be welded nuts. An angle sensor is provided on the steering seat 2 for obtaining the rotation angles of the guide rod 22 and the displacement bracket 5 on the steering seat 2.

[0036] Reference Figure 3 and Figure 4As shown, the base plate 1 is provided with a drive-change assembly below the front feed box 3 and the rear feed box 4, and the drive-change assembly includes a steering seat 2, a motor 11 is provided on the inner side of the steering seat 2, the output end of the motor 11 is connected to a swing rod 12, and the upper end of the swing rod 12 is rotatably provided with a fixed rod 13 connected to the bottom of the front feed box 3 and the rear feed box 4, respectively. A guide hole 10 is provided on the steering seat 2, and a guide rod 22 is provided on the steering seat 2 through the guide hole 10, and a motor is provided on the inner side of the guide rod 22. Second 14, the output end of the second motor 14 is continuously equipped with a driving gear 23 and a transmission rod 15 connected to the position-changing bracket 5. When the second motor 14 is started, the transmission rod 15 is driven to rotate, and the transmission rod 15 drives the position-changing bracket 5 to rotate, thereby completing the "progressive" transportation of the workpieces to be welded on the front feed box 3 and the rear feed box 4, respectively, and then completing the fixed-distance transportation of the workpieces to be welded between the front feed box 3 and the rear feed box 4 and on the welding table 6, thereby adapting to the continuous installation of nuts at different positions;

[0037] Reference Figure 5 and Figure 6 As shown, both ends of the front feed box 3 and the rear feed box 4 are equipped with connecting rod seats 20, and the connecting rod seats 20 on the same side are commonly penetrated with a support rod 9, and both ends of the support rod 9 are equipped with side connecting rods 8 connected to the base plate 1, one end of the guide wire rod 18 is equipped with a motor 3 17, and the lower end of the motor 3 17 is equipped with a middle connecting rod 19 connected to the base plate 1, and the longitudinal rods of the side connecting rod 8 and the middle connecting rod 19 are arranged parallel to the swing rod 12, and the single rod lengths of the side connecting rod 8, the middle connecting rod 19 and the swing rod 12 are the same. It is important to note that the side connecting rod 8 and the middle connecting rod 19 are corresponding follow-up structures with the swing rod 12, which can make the front feed box 3 and the rear feed box 4 intermittently move on the workpiece to be welded during the "swing" process of the swing rod 12 driven by the motor 11. At this time, the workpiece to be welded is on the welding table 6 and corresponds to the electrode rod 7 of the required welding nut. With the intermittent movement of the front feed box 3 and the rear feed box 4, the unit distance movement is completed, thereby completing the spot welding operation of the adapted nut positioning;

[0038] Reference Figure 6 and Figure 7As shown, the ends of the front feed box 3 and the rear feed box 4 are both equipped with a receiving plate 16, and the receiving plate 16 is equipped with a guide block 25 near the outside of the motor 2 14, and a straight gear rod 24 meshing with the drive gear 23 is slidably installed on the guide block 25, and the end of the straight gear rod 24 away from the guide block 25 is equipped with a cooling box 21 facing inward, and a blast port connected to the blower is provided on the inner side of the cooling box 21. During the spot welding operation, in the process of following active regulation, the motor 3 17 will drive the straight gear rod 24 to move horizontally through the drive gear 23, and then drive the cooling box 21 connected to the blower to move horizontally, and the blast port on the cooling box 21 is always facing the nut workpiece to be welded on the front feed box 3 and the rear feed box 4, and completes the blowing cooling with the movement, thereby improving the forming efficiency of nut welding in this process.

[0039] Basic principle: When the present invention is in use, on the one hand, it can complete the lateral movement of the nut workpiece to be welded by actively controlling the movement, and the displacement component constitutes the progressive movement of the nut workpiece to be welded, thereby realizing continuous displacement spot welding during the nut spot welding process; on the other hand, the spacing-adjustable support component is used to jointly complete the support of the nut workpiece to be welded, thereby adapting to workpieces of different sizes for corresponding spot welding processing; finally, the purpose of adapting to special-shaped and different-sized workpieces for adaptive continuous spot welding processing is achieved through the comprehensive mutual matching of the two.

[0040] Example 2

[0041] In order to solve the problem that the existing nut welding does not have the function of dynamic compensation of workpiece displacement during the welding process, the positioning process in Example 1 is further intelligently optimized;

[0042] A positioning module is provided in the control panel, and the positioning module includes a communication-connected orientation detection unit, an alignment correction analysis unit, a hole alignment execution unit, and a processor; the orientation detection unit is used to collect the conveying deflection value SP of the screw hole of the workpiece to be welded within the time threshold and obtain the rotation feed value XJ of the displacement bracket 5 within the time threshold, and send the conveying deflection value SP and the rotation feed value XJ to the alignment correction analysis unit via the processor. After receiving the conveying deflection value SP and the rotation feed value XJ, the alignment correction analysis unit obtains the deflection coefficient PJ through numerical calculation, and compares the deflection coefficient PJ with the preset deflection standard value PJy for analysis and sends it to the hole alignment execution unit;

[0043] Specifically, S1: The photoelectric sensor and infrared sensor located above the positioning auxiliary device obtain the coordinate values ​​of the position of the to-be-welded screw hole of the workpiece to be welded and the electrode rod 7, and the conveying deflection value SP is calculated based on the difference between the longitudinal coordinate of the to-be-welded screw hole and the longitudinal coordinate of the electrode rod 7 in the same column; the angle sensor located on the steering seat 2 obtains the deflection angle of the motor 2 14 and then obtains the rotation angle of the displacement bracket 5, and the rotation feed value XJ is obtained by numerical calculation based on the width of the displacement bracket 5;

[0044] S2: Construct the calculation formula of the eccentricity coefficient PJ: ;

[0045] S3: The alignment correction analysis unit receives the deviation coefficient PJ and the deviation standard value PJy for comparison and analysis. If the deviation coefficient PJ> the deviation standard value PJy, an overfeed signal is generated and sent to the hole position alignment execution unit. If the deviation coefficient PJ< the deviation standard value PJy, an underfeed signal is generated and sent to the hole position alignment execution unit. If the deviation coefficient PJ=the deviation standard value PJy, no signal is generated.

[0046] The hole alignment execution unit performs the following actions based on the signal generated by the alignment correction analysis unit:

[0047] Action 1: When the overfeed signal is received, a control signal is sent to the second motor 14. The second motor 14 is started to drive the displacement bracket 5 to rotate counterclockwise, thereby driving the nut workpiece to be welded on the front feed box 3 and the rear feed box 4 to move in the opposite direction. At the same time, the first motor 11 is started to drive the front feed box 3 and the rear feed box 4 to rotate counterclockwise through the swing rod 12. The mutual cooperation between the two drives the nut workpiece to be welded to complete the correction of the conveying deflection, and finally makes the screw hole position on the nut workpiece to be welded correspond to the electrode rod 7, completing the precise positioning;

[0048] Action 2: When the insufficient feed signal is received, a control signal is sent to the second motor 14. The second motor 14 is started to drive the displacement bracket 5 to rotate clockwise, thereby driving the nut workpiece to be welded on the front feed box 3 and the rear feed box 4 to move forward. At the same time, the first motor 11 is started to drive the front feed box 3 and the rear feed box 4 to rotate clockwise through the swing rod 12. The mutual cooperation between the two drives the nut workpiece to be welded to complete the correction of the conveying deflection, and finally makes the screw hole position on the nut workpiece to be welded correspond to the electrode rod 7, completing the precise positioning;

[0049] In combination with Example 1 and Example 2, for Action 1 and Action 2, during the continuous feeding process of the workpiece to be welded, if an overfeed signal is received, it means that the current nut workpiece to be welded has an "overfeed" phenomenon; if an underfeed signal is received, it means that the current nut workpiece to be welded has a "feed difference" phenomenon. At this time, the position adjustment bracket 5 drives the nut workpiece to be welded to form a screw hole corresponding to the electrode rod 7 to complete the precise alignment, and then combined with the clockwise and counterclockwise rotation of the front feed box 3 and the rear feed box 4 to complete the precise correspondence between the screw hole on the nut workpiece to be welded and the electrode rod 7, thereby realizing precise welding of the nut.

[0050] Example 3

[0051] This embodiment combines the technical contents of the first and second embodiments to form an auxiliary positioning method for nut spot welding operations, including the following steps:

[0052] S1: The nut workpiece to be welded is moved to the upper surface of the front feed box 3 and the rear feed box 4 by the conveyor belt / conveyor roller, and the photoelectric sensor and infrared sensor obtain the position of the nut workpiece to be welded and the coordinate value of the electrode rod 7, and then the angle sensor obtains the deflection angle of the motor 2 14 and the rotation angle of the displacement bracket 5;

[0053] S2: Calculate the difference between the conveying deflection value SP and the rotation feed value XJ obtained and calculated by the photoelectric sensor, infrared sensor and angle sensor to obtain a deflection coefficient, and compare and analyze the deflection coefficient with the deflection standard value to obtain an overfeed signal and an underfeed signal;

[0054] S3: According to the control signals generated by the overfeed signal and the underfeed signal, motor 1 11, motor 2 14 and motor 3 17 are respectively controlled to control the spacing between the front feed box 3 and the rear feed box 4, and the rotation angle of the displacement bracket 5, so as to jointly calibrate the precise position correspondence between the nut of the nut workpiece to be welded and the electrode rod 7 to achieve precise nut welding.

[0055] In summary, the present invention, on the one hand, can achieve lateral movement of the nut workpiece to be welded by actively controlling the lateral movement of the nut workpiece to be welded, and the displacement component is used to form a progressive movement of the nut workpiece to be welded, thereby achieving continuous displacement spot welding during the nut spot welding process; on the other hand, the spacing-adjustable support component is used to jointly support the nut workpiece to be welded, thereby adapting to workpieces of different sizes for corresponding spot welding processing;

[0056] It can also be assisted by the intelligent positioning module to adjust the position of the nut workpiece to be welded during the welding action, so that the nut workpiece to be welded and the electrode rod 7 are adaptively aligned, so as to achieve precise alignment for welding with excessive feed and feed difference, and realize intelligent regulation of nut spot welding operations; ultimately, under the comprehensive mutual matching of the two, the purpose of adaptive continuous spot welding processing of workpieces of different shapes and sizes is achieved, and the efficiency of nut spot welding processing is improved through intelligent dynamic compensation action.

[0057] The above contents are merely examples and explanations of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

[0058] Throughout this specification, references to terms such as "one embodiment," "example," and "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A positioning auxiliary device for nut spot welding operation, comprising a base plate (1), wherein a control panel is embedded on the base plate (1), characterized in that: A front feed box (3) and a rear feed box (4) are symmetrically arranged above the substrate (1), and a displacement assembly is arranged in the front feed box (3) and the rear feed box (4), and the displacement assembly includes a rotatably arranged displacement bracket (5), and the initial state of a pair of the displacement brackets (5) is to be horizontally arranged in the front feed box (3) and the rear feed box (4), respectively, and the pair of the displacement brackets (5) are used together for adjusting the position of the workpiece to be welded; a welding table (6) is arranged between the front feed box (3) and the rear feed box (4), and electrode rods (7) are evenly distributed on the welding table (6); a guide screw (18) is installed in the middle of the front feed box (3) and the rear feed box (4), and the thread directions of the guide screw (18) are opposite to each other, and when the guide screw (18) rotates, it drives the front feed box (3) and the rear feed box (4) to be close to or away from each other; A drive-change assembly is installed below the base plate (1) corresponding to the front feed box (3) and the rear feed box (4), and the drive-change assembly includes a steering seat (2), a motor 1 (11) is installed on the inner side of the steering seat (2), an output end of the motor 1 (11) is connected to a swing rod (12), and a fixing rod (13) connected to the bottom of the front feed box (3) and the bottom of the rear feed box (4) is rotatably installed on the upper end of the swing rod (12); Both ends of the front feed box (3) and the rear feed box (4) are equipped with connecting rod seats (20), and the connecting rod seats (20) on the same side are commonly penetrated by a support rod (9), and both ends of the support rod (9) are equipped with side connecting rods (8) connected to the base plate (1), one end of the guide wire rod (18) is equipped with a motor three (17), and the lower end of the motor three (17) is equipped with a middle connecting rod (19) connected to the base plate (1), and the longitudinal rods of the side connecting rod (8) and the middle connecting rod (19) are arranged in parallel with the swing rod (12), and the single rod lengths of the side connecting rod (8), the middle connecting rod (19) and the swing rod (12) are the same.

2. A positioning auxiliary device for nut spot welding according to claim 1, characterized in that: A guide hole (10) is provided on the steering seat (2), a guide rod (22) is installed on the steering seat (2) through the guide hole (10), a second motor (14) is installed on the inner side of the guide rod (22), and a driving tooth (23) and a transmission rod (15) connected to the displacement bracket (5) are continuously installed at the output end of the second motor (14).

3. A positioning auxiliary device for nut spot welding according to claim 2, characterized in that: The ends of the front feed box (3) and the rear feed box (4) are both installed with a receiving plate (16), and the receiving plate (16) is installed with a guide block (25) near the outer side of the motor 2 (14).

4. A positioning auxiliary device for nut spot welding according to claim 3, characterized in that: A straight tooth rod (24) meshing with the driving teeth (23) is slidably mounted on the guide block (25); an inwardly facing cooling box (21) is mounted on one end of the straight tooth rod (24) away from the guide block (25); and an air blast port connected to a blower is provided on the inner side of the cooling box (21).

5. A positioning auxiliary device for nut spot welding according to claim 1, characterized in that: The control panel is provided with a positioning module, which includes a communication-connected orientation detection unit, a position correction analysis unit, a hole position alignment execution unit and a processor; The orientation detection unit is used to collect the conveying deflection value SP of the screw hole of the workpiece to be welded within the time threshold and obtain the rotation feed value XJ of the displacement bracket (5) within the time threshold, and send the conveying deflection value SP and the rotation feed value XJ to the alignment correction analysis unit through the processor. After receiving the conveying deflection value SP and the rotation feed value XJ, the alignment correction analysis unit obtains the deflection coefficient PJ through numerical calculation, and compares the deflection coefficient PJ with the preset deflection standard value PJy for analysis and sends it to the hole alignment execution unit; The hole position alignment execution unit controls related components to perform actions according to the signal generated by the alignment correction analysis unit.

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