A fast production conversion device for spot welding of automobile parts

Abstract

The present invention provides a fast production conversion device for spot welding of automobile parts, and relates to the field of automobile parts welding. The fast production conversion device for spot welding of automobile parts comprises a workbench, a frame is fixedly installed above the workbench, a spot welding table is installed on the upper surface of the workbench in the frame, an electric push rod assembly is arranged on the spot welding table, a plurality of electric push rod assemblies are arranged, the output end of the electric push rod assembly faces upward and is installed with a production conversion adapter; a cross slide assembly is installed on the frame. The fast production conversion device for spot welding of automobile parts, by arranging the electric push rod assembly, the spot welding table and the production conversion adapter, can arbitrarily change the position of the electric push rod A or increase or decrease the number of the electric push rod A when facing different automobile parts for production conversion, and can always arbitrarily change the position to match the support point, and the production conversion adapter can match the shape of the parts to achieve the effect of high-efficiency production conversion and a large production conversion range.

Description

Technical Field

[0001] The invention relates to the field of automobile parts welding, in particular to a fast production conversion device for spot welding of automobile parts. Background Art

[0002] Parts conversion refers to the process of reconfiguring equipment originally used to produce a certain product to produce other products. When faced with factors such as changes in market demand and technological advances, companies need to convert parts to adapt to the new production environment. The process mainly includes preparation, conversion process and post-conversion management. At present, in the process of processing automotive parts, in order to complete the welding of various welds of parts, it is often necessary to use conversion equipment for conversion.

[0003] According to a fast conversion device for spot welding of automobile shock absorber dust cover provided by the patent document with application number CN202110835275.7, the conversion device includes a base plate, an electrode head and a positioning block assembly. Several semicircular seats are arranged on the base plate. There is a concave semicircular structure in the middle of the top of the semicircular seat. The semicircular seat is used to place the damper. The positioning block assembly passes through the damper and is used to position the dust cover. There are two electrode heads arranged up and down, and the damper and the dust cover are welded by the two electrode heads. The purpose is to solve the problem that the existing production line cannot convert multiple specifications, and the debugging is difficult during the first welding, and the on-site management is chaotic, and the conversion of the overall tooling can be quickly realized.

[0004] The above-mentioned welding conversion device can solve the problem that the existing production line cannot convert multiple specifications, but the traditional automobile parts welding conversion device often meets the need for rapid conversion by replacing the semicircular seat and positioning block used for support. Although this method can adapt to the conversion needs of different parts, it requires repeated debugging and selection of suitable semicircular seats and positioning blocks during replacement, which affects the conversion efficiency. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a fast production conversion device for spot welding of automobile parts, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fast production transfer device for spot welding of automobile parts, comprising a workbench, a frame is fixedly installed above the workbench, a spot welding table is installed on the upper surface of the workbench in the frame, an electric push rod assembly is arranged on the spot welding table, a plurality of electric push rod assemblies are arranged, the output end of the electric push rod assembly faces upward and is installed with a production transfer adapter;

[0007] A cross slide assembly is installed on the frame, and the cross slide assembly is provided with two output ends, both of which are equipped with a pressing mechanism, and a transfer assembly is installed on one of the pressing mechanisms;

[0008] The spot welding station includes an intermediate plate, a bottom shell, a top shell and a control component. The intermediate plate is located between the bottom shell and the top shell. The bottom shell and the top shell both form a cavity structure with the intermediate plate. The intermediate plate is provided with a plurality of slots. A plurality of positioning pins are fixedly installed on the inner bottom wall of the slot. A circular hole penetrating downward is provided on the inner bottom wall of the slot. The control component is located in the bottom shell and fixed on the bottom surface of the intermediate plate. Corresponding to the circular hole, a plurality of contact holes are provided in the control component. Auxiliary slots penetrating downward are provided at the corresponding slots on the top shell. The electric push rod component can penetrate any of the auxiliary slots and be inserted downward into the slot. Its bottom end penetrates the circular hole and is inserted into the control component. The auxiliary slot and the slot can fix the electric push rod component.

[0009] The transfer assembly is used to adjust the position of the electric push rod assembly corresponding to the slot on the middle plate.

[0010] Preferably, the electric push rod assembly includes an electric push rod A, a positioning plate A, a positioning plate B and a contact. A card slot is provided on the outer wall of the electric push rod A. The positioning plate A and the positioning plate B are both fixed to the outside of the bottom end of the electric push rod A. The positioning plate B is located below the positioning plate A. The positioning plate B is provided with a plurality of positioning holes that pass through the upper and lower parts. The contact is installed on the input end of the electric push rod A. When the electric push rod A is installed on the spot welding table, the positioning plate A is in the auxiliary slot, the positioning plate B is in the slot, the positioning pin is inserted into the positioning hole, and the contact is inserted into the contact hole for conduction.

[0011] Preferably, the conversion adapter comprises a motor A, a double rocker arm and an arc wheel, the output end of the motor A is axially mounted on the output end of the electric push rod A, two double rocker arms are provided, and one end is mounted on the motor A, two arc wheels are provided, which are mounted on the other end of the double rocker arm, a motor B is installed at the connection between the double rocker arm and the motor A, which is used to control the swing of the double rocker arm, a motor C is installed at the connection between the arc wheel and the double rocker arm, which is used to control the rotation of the arc wheel relative to the double rocker arm, the arc wheel is an incomplete circular structure, the center of which corresponds to the output end of the motor C, the curvature of the end portion is smaller than the curvature of the middle position, the outer wall of the arc wheel is fixedly covered with a rubber pad, the rubber pad in the middle position is a flat groove type, and the rubber pads at both ends are pointed protrusion type.

[0012] Preferably, the output end of motor B is perpendicular to motor A, and the output end of motor C is parallel to motor B.

[0013] Preferably, the cross slide assembly includes slide rails A and slide rails B, and two slide rails A and two slide rails B are provided. The two slide rails A are fixed to the inner ring of the frame, and the two slide rails B are perpendicular to the slide rails A and are located between the two slide rails A. The slide rails B can slide autonomously along the slide rails A, and the pressing mechanism is installed on the slide rails B and can move autonomously along the slide rails B.

[0014] Preferably, the pressing mechanism includes a slider, an electric push rod B, a connecting plate and a pressure ring. The slider is installed on the slide rail B and can slide autonomously along the slide rail B. Two electric push rods B are provided, and their fixed ends are fixedly installed on the slider. The connecting plate connects the output ends of the two electric push rods B, and the pressure ring is fixed at the bottom position of the connecting plate.

[0015] Preferably, the pressure ring is a tubular rubber ring.

[0016] Preferably, the transfer assembly includes a slide rail C, a clamping block and a screw transmission assembly. The slide rail C is fixed to one side of the connecting plate. Two clamping blocks are provided, one end of which is inserted into the slide rail C and slidably connected thereto. The screw transmission assembly is installed on the slide rail C and is used to control the opening and closing of the two clamping blocks. The clamping blocks can be inserted into the slots.

[0017] Preferably, the slots are distributed in a matrix on the middle board.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The fast conversion device for spot welding of automobile parts is provided with an electric push rod assembly, a spot welding table and a conversion adapter. According to the parts to be spot welded, such as door panels, car bodies, beams, oil pans, etc., and the shapes of the supports of these parts, the cross slide assembly is controlled to drive the transfer assembly to move, thereby lifting the electric push rod assembly, so that a plurality of electric push rod assemblies are combined and inserted on the spot welding table. If it is a planar part, the double rocker arm and the arc wheel are controlled to operate so that the two arc wheels are symmetrically arranged, and the rubber pads thereon are in contact with the parts. If it is a curved part, the arc wheel is controlled to rotate at a certain angle to still achieve stable support. The tubular parts can make the two arc wheels rotate in a "Y" shape. The stepped parts can be electric push rods A extending to different heights. After the support is good, the two pressing mechanisms can press the automobile parts for spot welding. Therefore, when facing different automobile parts during conversion, the electric push rod assembly can always change the position to match the support point at will, and the conversion adapter can better match the shape of the parts, so as to achieve the effect of high-efficiency conversion and large conversion range.

[0020] 2. The automobile parts spot welding rapid production transfer device is provided with an intermediate plate, a control assembly and a top shell. When the electric push rod A is inserted into any slot, its bottom end passes through the round hole and is inserted into the control assembly. The contact of the electric push rod A is inserted into the corresponding contact hole. At this time, the power supply is completed and the control can be performed. When the electric push rod A is transferred, the contact is unplugged from the contact hole to cut off the power. Therefore, the position of the electric push rod A can be changed arbitrarily or the number of the electric push rods A can be increased or decreased, and precise control can be performed. The top shell, the slot and the positioning pin can stabilize the electric push rod A and prevent shaking after the electric push rod A is placed.

[0021] 3. The automotive parts spot welding rapid production transfer device is equipped with a cross slide assembly, which can realize the movement of the output end along the XY axis, and then cooperate with the electric push rod B to realize the Z axis movement, so as to realize the change of any position on the spot welding table, and the electric push rod A can be transferred to any position or the parts can be pressed at any position. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 It is a front view of the structure of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the spot welding station of the present invention;

[0025] Figure 4 It is a structural diagram of the electric push rod assembly of the present invention;

[0026] Figure 5 It is a connection diagram of the electric push rod assembly of the present invention and the conversion accessories;

[0027] Figure 6 A top view of the structure of the spot welding station of the present invention;

[0028] Figure 7 For the present invention Figure 6 A magnified view of a local area in ;

[0029] Figure 8 A connection diagram of the electric push rod assembly and the spot welding station of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the frame and the cross slide assembly of the present invention;

[0031] Fig.10 For the present invention Fig. 9 A magnified view of a local area.

[0032] In the figure: 1, workbench; 2, frame; 3, spot welding station; 301, middle plate; 302, bottom shell; 303, top shell; 304, control component; 305, slot; 306, round hole; 307, contact hole; 308, auxiliary slot; 309, positioning pin; 4, electric push rod assembly; 401, electric push rod A; 402, positioning plate A; 403, positioning plate B; 404, contact; 405, slot; 406, positioning hole; 5, rotary Production adapter; 501, motor A; 502, double rocker arm; 503, arc wheel; 504, motor B; 505, motor C; 506, rubber pad; 6, cross slide assembly; 601, slide rail A; 602, slide rail B; 7, pressing mechanism; 701, slider; 702, electric push rod B; 703, connecting plate; 704, pressure ring; 8, transfer assembly; 801, slide rail C; 802, clamping block; 803, screw drive assembly. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] like Figure 1-10 As shown, a fast production transfer device for spot welding of automobile parts comprises a workbench 1, a frame 2 is fixedly installed above the workbench 1, a spot welding station 3 is installed on the upper surface of the workbench 1 in the frame 2, an electric push rod assembly 4 is arranged on the spot welding station 3, a plurality of electric push rod assemblies 4 are arranged, the output end of the electric push rod assembly 4 faces upward and is installed with a production transfer adapter 5; a cross slide assembly 6 is installed on the frame 2, the cross slide assembly 6 is provided with two output ends, both of which are installed with a pressing mechanism 7, and a transfer assembly 8 is installed on one of the pressing mechanisms 7; the spot welding station 3 comprises an intermediate plate 301, a bottom shell 302, a top shell 303 and a control assembly 304, the intermediate plate 301 is located between the bottom shell 302 and the top shell 303, the bottom shell 302 and the top shell 303 both form a cavity structure with the intermediate plate 301, and the intermediate plate 301 is provided with a plurality of electric push rod assemblies 4 ... A plurality of slots 305 are provided on the plate 301, a plurality of positioning pins 309 are fixedly installed on the inner bottom wall of the slots 305, a circular hole 306 penetrating downward is provided on the inner bottom wall of the slots 305, the control component 304 is located in the bottom shell 302 and fixed on the bottom surface of the middle plate 301, corresponding to the circular hole 306, a plurality of contact holes 307 are provided in the control component 304, and auxiliary slots 308 penetrating downward are provided at the corresponding slots 305 on the top shell 303, the electric push rod component 4 can penetrate any auxiliary slot 308 and be inserted downward into the slot 305, and its bottom end penetrates the circular hole 306 and then is inserted into the control component 304, the auxiliary slot 308 and the slot 305 can fix the electric push rod component 4; the transfer component 8 is used to adjust the position of the electric push rod component 4 corresponding to the slot 305 on the middle plate 301.

[0038] The spot welding equipment is installed on one side of the workbench 1 and can be installed on an existing robotic arm for free movement. The control components 304 of the spot welding station 3 are connected with cables, which are multi-channel powered to realize control of the electric push rod in each circular hole 306.

[0039] The electric push rod assembly 4 includes an electric push rod A401, a positioning plate A402, a positioning plate B403 and a contact 404. A card slot 405 is provided on the outer wall of the electric push rod A401. The positioning plate A402 and the positioning plate B403 are both fixed to the outside of the bottom end of the electric push rod A401. The positioning plate B403 is located below the positioning plate A402. The positioning plate B403 is provided with a plurality of positioning holes 406 that pass through the upper and lower parts. The contact 404 is installed on the input end of the electric push rod A401. When the electric push rod A401 is installed on the spot welding table 3, the positioning plate A402 is located in the auxiliary groove 308, the positioning plate B403 is located in the slot 305, the positioning pin 309 is inserted into the positioning hole 406, and the contact 404 is inserted into the contact hole 307 for conduction.

[0040] The servo motor inside the electric push rod A401 is located below it, and its control circuit is electrically connected to the contact 404. Multiple contacts 404 can be provided to realize multi-way power supply and control. The electric push rod A401 can be powered on after being inserted, and powered off after being unplugged. Therefore, there will be no problem of cable entanglement when multiple electric push rods A401 are installed on the spot welding table 3, and the cables will not be broken or melted due to spot welding. Since the slot 305, the positioning pin 309, etc. are provided, the electric push rod A401 is fixed when it is automatically inserted.

[0041] The conversion adapter 5 includes a motor A501, a double rocker arm 502 and an arc wheel 503. The output end of the motor A501 is axially installed on the output end of the electric push rod A401. There are two double rocker arms 502, and one end is installed on the motor A501. There are two arc wheels 503, which are installed on the other end of the double rocker arm 502. A motor B504 is installed at the connection between the double rocker arm 502 and the motor A501 for controlling the swing of the double rocker arm 502. A motor C505 is installed at the connection between the arc wheel 503 and the double rocker arm 502 for controlling the rotation of the arc wheel 503 relative to the double rocker arm 502. The arc wheel 503 is an incomplete circular structure, and its center corresponds to the output end of the motor C505. The curvature of its end is smaller than that of the middle position. The outer wall of the arc wheel 503 is fixedly covered with a rubber pad 506. The rubber pad 506 in the middle position is a flat groove type, and the rubber pads 506 at both ends are a pointed protrusion type.

[0042] Motor A501, motor B504 and motor C505 are all controlled by intelligent circuits. According to the shapes of the parts, the rotation angles are defined at the beginning, so they can respond quickly when switching to predetermined parts. Rubber pads 506 are used to protect automotive parts and increase friction with automotive parts. The shape of the arc wheel 503 can match the shapes of various automotive parts.

[0043] The output end of motor B504 is perpendicular to motor A501, and the output end of motor C505 is parallel to motor B504.

[0044] Not only can the two double rocker arms 502 be opened and closed, but they can also rotate themselves, and have a wide adaptability range.

[0045] The cross slide assembly 6 includes a slide rail A601 and a slide rail B602. There are two slide rails A601 and two slide rails B602. The two slide rails A601 are fixed to the inner ring of the frame 2. The two slide rails B602 are perpendicular to the slide rail A601 and are located between the two slide rails A601. The slide rails B602 can slide autonomously along the slide rail A601. The pressing mechanism 7 is installed on the slide rail B602 and can move autonomously along the slide rail B602.

[0046] The cross slide assembly 6 is a structure in the prior art, and the movement mode can be selected from a servo motor, a screw transmission mechanism, etc., mainly for movement that requires precise position.

[0047] The pressing mechanism 7 includes a slider 701, an electric push rod B702, a connecting plate 703 and a pressing ring 704. The slider 701 is installed on the slide rail B602 and can slide autonomously along the slide rail B602. There are two electric push rods B702, and their fixed ends are fixedly installed on the slider 701. The connecting plate 703 connects the output ends of the two electric push rods B702, and the pressing ring 704 is fixed at the bottom position of the connecting plate 703.

[0048] The pressing mechanism 7 is used to control the connection plate 703 and the pressing ring 704 to move up and down along the Z axis. When the pressing ring 704 contacts the upper end of the automobile part, it cooperates with the electric push rod A401 at the bottom to fix the part together, which is convenient for subsequent spot welding.

[0049] The pressure ring 704 is a tubular rubber ring.

[0050] The tubular rubber ring has a certain elasticity, which can not only avoid damage to auto parts, but also increase the friction between the two.

[0051] The transfer assembly 8 includes a slide rail C801, a clamping block 802 and a screw transmission assembly 803. The slide rail C801 is fixed to one side of the connecting plate 703. Two clamping blocks 802 are provided, one end of which is inserted into the slide rail C801 and slidably connected thereto. The screw transmission assembly 803 is installed on the slide rail C801 and is used to control the opening and closing of the two clamping blocks 802. The clamping blocks 802 can be inserted into the slots 405.

[0052] After being clamped, the clamp block 802 can be inserted into the clamping slot 405 to fix the electric push rod A401. When the clamp block 802 moves upward, the electric push rod A401 can be lifted.

[0053] The slots 305 are distributed in a matrix on the middle board 301 .

[0054] The area of ​​the middle plate 301 is not limited to the size shown in the figure, and the area can be freely extended according to actual usage, which is the same as the structural theory, and the spacing between the slots 305 can also be freely processed and adjusted according to actual usage.

[0055] When in use, spot welding is mainly used for body assemblies, floors, doors, side panels, rear panels, front axles and small parts. According to the points that the spot-welded parts need to support and the shapes of the parts themselves, the cross slide assembly 6 is controlled to drive the transfer assembly 8 to move. The cross slide assembly 6 can realize the movement of the output end along the XY axis, and then cooperate with the electric push rod B702 to realize the Z axis movement. It can change any position on the spot welding table 3, thereby lifting the electric push rod assembly 4, so that multiple electric push rod assemblies 4 can be combined and inserted on the spot welding table 3, and the electric push rod A401 can be plugged into any one When the electric push rod A401 is in the slot 305, its bottom end passes through the round hole 306 and is inserted into the control component 304. The contact 404 of the electric push rod A401 is inserted into the corresponding contact hole 307. At this time, the power supply is completed and control can be performed. When the electric push rod A401 is transferred, the contact 404 is unplugged from the contact hole 307 to cut off the power. Therefore, the position of the electric push rod A401 can be changed arbitrarily or the number of the electric push rods A401 can be increased or decreased. Accurate point control can be performed. After the number and position of the electric push rods A401 are determined according to the point positions of these components;

[0056] If it is a planar component, control the double rocker arm 502 and the arc wheel 503 to operate, so that the two arc wheels 503 are separated and symmetrically arranged, so that the arc end in the middle position faces upward and contacts with the component, and the flat groove position of the rubber pad 506 fits with the component. If it is a curved component, control the arc wheel 503 to rotate a certain angle, and still achieve stable planar support. For tubular components, the two arc wheels 503 can be rotated in a "Y" shape. The stepped components can be the electric push rod A401 extending to different heights. After support, the two pressing mechanisms 7 cooperate with the electric push rod B702 to realize Z-axis movement, which can press the automotive components for spot welding.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0058] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fast production conversion device for spot welding of automobile parts, comprising a workbench (1), characterized in that: A frame (2) is fixedly installed above the workbench (1); a spot welding table (3) is installed on the upper surface of the workbench (1) within the frame (2); an electric push rod assembly (4) is arranged on the spot welding table (3); a plurality of electric push rod assemblies (4) are arranged; an output end of the electric push rod assembly (4) faces upward and is installed with a conversion adapter (5); A cross slide assembly (6) is mounted on the frame (2), the cross slide assembly (6) being provided with two output ends, both of which are equipped with a pressing mechanism (7), and a transfer assembly (8) is mounted on one of the pressing mechanisms (7); The spot welding station (3) comprises an intermediate plate (301), a bottom shell (302), a top shell (303) and a control component (304); the intermediate plate (301) is located between the bottom shell (302) and the top shell (303); the bottom shell (302) and the top shell (303) form a cavity structure with the intermediate plate (301); a plurality of slots (305) are provided on the intermediate plate (301); a plurality of positioning pins (309) are fixedly mounted on the inner bottom wall of the slots (305); a circular hole (306) penetrating downward is provided on the inner bottom wall of the slots (305); and the control component (304) Located in the bottom shell (302) and fixed on the bottom surface of the middle plate (301), corresponding to the circular hole (306), a plurality of contact holes (307) are provided in the control component (304), and auxiliary grooves (308) penetrating downwards are provided at the corresponding slots (305) on the top shell (303), and the electric push rod component (4) can penetrate any auxiliary groove (308) and be inserted downwards into the slot (305), and its bottom end penetrates the circular hole (306) and then is inserted into the control component (304), and the auxiliary groove (308) and the slot (305) can fix the electric push rod component (4); The transfer assembly (8) is used to adjust the position of the electric push rod assembly (4) corresponding to the slot (305) on the middle plate (301).

2. The fast production conversion device for spot welding of automobile parts according to claim 1 is characterized in that: The electric push rod assembly (4) comprises an electric push rod A (401), a positioning plate A (402), a positioning plate B (403) and a contact (404). A slot (405) is provided on the outer wall of the electric push rod A (401). The positioning plate A (402) and the positioning plate B (403) are both fixed to the outside of the bottom end of the electric push rod A (401). The positioning plate B (403) is located below the positioning plate A (402). The positioning plate B (403) is located above the positioning plate A plurality of positioning holes (406) extending vertically therethrough are provided, and the contact (404) is mounted on the input end of the electric push rod A (401). When the electric push rod A (401) is mounted on the spot welding table (3), the positioning plate A (402) is located in the auxiliary groove (308), the positioning plate B (403) is located in the slot (305), the positioning pin (309) is inserted into the positioning hole (406), and the contact (404) is inserted into the contact hole (307) for conducting electricity.

3. The rapid production conversion device for spot welding of automobile parts according to claim 2 is characterized in that: The conversion adapter (5) comprises a motor A (501), a double rocker arm (502) and an arc wheel (503), wherein the output end of the motor A (501) is axially mounted on the output end of the electric push rod A (401), two double rocker arms (502) are provided, and one end is mounted on the motor A (501), and two arc wheels (503) are provided, which are mounted on the other end of the double rocker arm (502), and a motor B (504) is installed at the connection between the double rocker arm (502) and the motor A (501) for controlling the double rocker arm (502). Swing, a motor C (505) is installed at the connection between the arc wheel (503) and the double rocker arm (502) for controlling the arc wheel (503) to rotate relative to the double rocker arm (502), the arc wheel (503) is an incomplete circular structure, the center of the circle corresponds to the output end of the motor C (505), the arc of the end is smaller than the arc in the middle, the outer wall of the arc wheel (503) is fixedly covered with a rubber pad (506), the rubber pad (506) in the middle is a flat groove type, and the rubber pads (506) at the two end positions are a pointed protrusion type.

4. The fast production conversion device for spot welding of automobile parts according to claim 3 is characterized in that: The output end of the motor B (504) is perpendicular to the motor A (501), and the output end of the motor C (505) is parallel to the motor B (504).

5. The rapid production conversion device for spot welding of automobile parts according to claim 1 is characterized in that: The cross slide assembly (6) comprises a slide rail A (601) and a slide rail B (602), wherein two slide rails A (601) and two slide rails B (602) are provided, the two slide rails A (601) are fixed to the inner ring of the frame (2), the two slide rails B (602) are perpendicular to the slide rails A (601) and are located between the two slide rails A (601), the slide rails B (602) are able to slide autonomously along the slide rails A (601), and the pressing mechanism (7) is installed on the slide rails B (602) and is able to move autonomously along the slide rails B (602).

6. The fast production conversion device for spot welding of automobile parts according to claim 5 is characterized in that: The pressing mechanism (7) comprises a slider (701), an electric push rod B (702), a connecting plate (703) and a pressing ring (704); the slider (701) is mounted on a slide rail B (602) and is capable of sliding autonomously along the slide rail B (602); two electric push rods B (702) are provided, and their fixed ends are both fixedly mounted on the slider (701); the connecting plate (703) connects the output ends of the two electric push rods B (702); and the pressing ring (704) is fixed at the bottom position of the connecting plate (703).

7. The rapid production conversion device for spot welding of automobile parts according to claim 6 is characterized in that: The pressing ring (704) is a tubular rubber ring.

8. The fast production conversion device for spot welding of automobile parts according to claim 2 is characterized in that: The transfer assembly (8) comprises a slide rail C (801), a clamping block (802) and a lead screw transmission assembly (803); the slide rail C (801) is fixed to one side of the connecting plate (703); two clamping blocks (802) are provided, one end of which is inserted into the slide rail C (801) and slidably connected thereto; the lead screw transmission assembly (803) is mounted on the slide rail C (801) and is used to control the opening and closing of the two clamping blocks (802); the clamping blocks (802) can be clamped into the clamping slots (405).

9. The fast production conversion device for spot welding of automobile parts according to claim 1, characterized in that: The slots (305) are distributed in a matrix on the middle board (301).

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