Accurate positioning and welding device for automobile round girder

Abstract

The invention discloses a precise positioning and welding device for an automobile round girder, which belongs to the technical field of round girder processing equipment and comprises two cross arms and two longitudinal arms and further comprises a bottom plate, a support for supporting the two longitudinal arms is arranged on the bottom plate, and multiple groups of positioning mechanisms for positioning the longitudinal arms are arranged at two ends of the support. The multiple sets of positioning mechanisms are sequentially arranged in the direction perpendicular to the middle axial face of the round girder. The two ends of the support are each provided with a first fixing mechanism used for fixing two longitudinal arms of the round girder. Two supporting columns are arranged on the bottom plate in a sliding mode in the central axis direction of the round girder, the two supporting columns correspond to two cross arms of the round girder, second fixing mechanisms used for fixing the cross arms on the round girder are arranged on the supporting columns, and limiting mechanisms used for limiting the supporting columns are arranged on the bottom plate. The round girder welding device has the advantages that round girders of different models can be welded conveniently, so that the flexibility and universality of the device are improved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of ingot beam processing equipment, and in particular to a precise positioning welding device for automobile ingot beams. Background Art

[0002] With the rapid development of the automobile industry, the requirements for the manufacturing accuracy and production efficiency of automobile structural parts are getting higher and higher. As an important part of the automobile chassis, the Yuanbao beam is usually U-shaped and is used to connect the body and the suspension system, playing an important supporting role. Its structure is complex and the welding accuracy requirements are extremely high, which directly affects the safety and stability of the car.

[0003] In the prior art, a car beam includes two transverse arms and two longitudinal arms. The transverse arms are connected to the vehicle's suspension system, and they help support the front of the vehicle and absorb lateral forces. The longitudinal arms extend longitudinally along the vehicle and are connected to the vehicle's suspension system. The transverse arms and longitudinal arms of the beam are interconnected through connection points to form a solid frame structure. The transverse arms and longitudinal arms are composed of upper and lower pressure plates, and finally the edges of the upper and lower pressure plates are aligned and then connected together through a welding process.

[0004] However, the current positioning welding devices are only suitable for specific models or sizes of Yuanbao beams, and are difficult to adapt to the welding requirements of Yuanbao beams of different models. They lack sufficient flexibility and versatility, which limits their application in different production scenarios and increases production costs. Summary of the invention

[0005] In order to facilitate the welding of different types of Yuanbao beams, thereby improving the flexibility and versatility of the device and reducing production costs, the present application provides a precise positioning welding device for automobile Yuanbao beams.

[0006] The present application provides a precise positioning welding device for automobile ingot beams, which adopts the following technical solutions: A precise positioning welding device for an automobile Yuanbao beam comprises two transverse arms and two longitudinal arms, and also comprises a base plate, wherein a bracket for supporting the two longitudinal arms is provided on the base plate, and a plurality of positioning mechanisms for positioning the longitudinal arms are provided at both ends of the bracket, and the plurality of positioning mechanisms are sequentially arranged in a direction perpendicular to the central axis of the Yuanbao beam; a first fixing mechanism for fixing the two longitudinal arms of the Yuanbao beam is provided at both ends of the bracket; two support columns are provided on the base plate for sliding along the central axis direction of the Yuanbao beam, and the two support columns correspond to the two transverse arms of the Yuanbao beam, and a second fixing mechanism for fixing the transverse arms on the Yuanbao beam is provided on the support columns, and a limiting mechanism for limiting the support columns is provided on the base plate.

[0007] By adopting the above technical scheme, the staff first places the two longitudinal arms of the Yuanbao beam on the bracket, and positions the longitudinal arms of the Yuanbao beam through the positioning mechanism on the corresponding position of the bracket according to the size and size of the Yuanbao beam, thereby pre-positioning the longitudinal arms of the Yuanbao beam and the entire Yuanbao beam, and then moves the two supporting columns to the lower position of the two transverse arms of the Yuanbao beam respectively, and then limits the two supporting columns through the limiting mechanism, and fixes the longitudinal arms and transverse arms of the Yuanbao beam respectively through the first fixing mechanism and the second fixing mechanism, so that the entire Yuanbao beam can be fixed to facilitate the subsequent welding process, and the entire device is convenient for positioning and fixing Yuanbao beams of different sizes and dimensions, thereby improving the flexibility and versatility of the device, and thus reducing production costs.

[0008] Preferably, the positioning mechanism includes a slide plate and a positioning rod, the positioning rod is vertically arranged, and one end of the positioning rod is fixedly arranged on the slide plate, the upper and lower pressure plates of the longitudinal arm are provided with a positioning hole for the positioning rod to be inserted, and the positioning rod is simultaneously inserted into the upper and lower pressure plates of the longitudinal arm, the slide plate and the positioning rod both slide vertically on the bracket, and a reset member for resetting the slide plate is provided in the bracket, and the positioning mechanism also includes a limit assembly for limiting the slide plate.

[0009] By adopting the above technical solution, before the two longitudinal arms on the Yuanbao beam are placed on the bracket, the positioning rods 1 in all the positioning mechanisms are located in the bracket. The staff can first move the positioning rods 1 corresponding to the positioning holes 1 on the two longitudinal arms upward to the top of the bracket according to the size of the Yuanbao beam. The staff can move the slide plate upward to drive the positioning rod 1 to move, and then limit the slide plate 1 and the positioning rod 1 through the limiting assembly; then move the Yuanbao beam, and insert the positioning rod 1 at the corresponding position into the positioning holes 1 on the two longitudinal arms of the Yuanbao beam, so that the entire Yuanbao beam can be positioned, reducing the possibility of position displacement of the Yuanbao beam during subsequent welding, and indirectly improving the welding accuracy.

[0010] Preferably, the limit assembly includes a limit plate and a spring 1, the limit plate slides horizontally in the bracket, the spring 1 is arranged in the bracket, and the two ends of the spring 1 are respectively fixed to the limit plate and the inner wall of the bracket; the limit plate is provided with an inclined surface on the side close to the slide plate 1, and the limit plate is slidably engaged with the slide plate 1 through the inclined surface, and a limit groove for the limit plate to be plugged into is provided on the slide plate 1.

[0011] By adopting the above technical solution, during the upward movement of slide plate 1 and positioning rod 1, slide plate 1 can push the limit plate compression spring 1 to move through the inclined surface on the limit plate. Then, when slide plate 1 moves to the position corresponding to the limit plate and the limit groove, spring 1 can push the limit plate to be inserted into the limit groove on slide plate 1. At this time, positioning rod 1 is located at the top of the bracket, thereby limiting the position of slide plate 1 and positioning rod 1, reducing the possibility of slide plate 1 and positioning rod 1 moving downward.

[0012] Preferably, the first fixing mechanism includes an inner tightening assembly and an outer tightening assembly, and also includes a first pressing assembly for pressing the longitudinal arm; The inner clamping assembly comprises an inner clamping plate sliding on the bracket and a driving member 1 for driving the inner clamping plate to move, wherein the inner clamping plate 1 is in contact with the inner side wall of the longitudinal arm; The outer clamping assembly includes an outer clamping plate that slides on the bracket and a second driving member for driving the outer clamping plate to move, and the outer clamping plate is in contact with the outer side wall of the longitudinal arm.

[0013] By adopting the above technical solution, when the positioning rod 1 is inserted into the positioning hole 1 on the longitudinal arm of the Yuanbao beam, that is, the Yuanbao beam is positioned, the staff can push the inner clamping plate to move toward the direction of the corresponding longitudinal arm of the Yuanbao beam through the driving member 1 until the inner clamping plate abuts against the inner side wall of the corresponding longitudinal arm of the Yuanbao beam. The staff can simultaneously drive the outer clamping plate to move toward the direction of the corresponding longitudinal arm of the Yuanbao beam through the driving member 2 until the outer clamping plate abuts against the outer side wall of the corresponding longitudinal arm of the Yuanbao beam. During the movement of the outer clamping plate, the first clamping component can be triggered, and the first clamping component can clamp the corresponding longitudinal arm of the Yuanbao beam onto the bracket. The whole process improves the stability of the Yuanbao beam in the subsequent welding process, thereby further improving the welding accuracy.

[0014] Preferably, the first clamping assembly includes an abutment plate, a clamping plate 1 and a connecting rod 1, the abutment plate slides horizontally on the outer abutment plate, the clamping plate 1 slides vertically on the outer abutment plate, and the two ends of the connecting rod 1 are respectively hinged to the clamping plate 1 and the abutment plate; a spring 1 is provided between the abutment plate and the outer abutment plate, and the two ends of the spring 1 are respectively fixedly arranged on the abutment plate and the outer abutment plate.

[0015] By adopting the above technical solution, when the outer clamping plate moves toward the direction of the longitudinal arm corresponding to the Yuanbao beam, the outer clamping plate can drive the abutment plate to move, and then the abutment plate can abut against the outer side wall of the longitudinal arm corresponding to the Yuanbao beam, and compress the spring 1 to move, and the abutment plate can drive the connecting rod 1 to rotate during the movement, and the connecting rod 1 can drive the clamping plate 1 to move downward until the clamping plate 1 abuts against the top of the longitudinal arm corresponding to the Yuanbao beam; the elastic force of the set spring 1 can push the abutment plate to abut against the outer side wall of the longitudinal arm corresponding to the Yuanbao beam, and the clamping plate 1 can abut against the top of the longitudinal arm corresponding to the Yuanbao beam and press it against the bracket, thereby further improving the stability of the longitudinal arm during the welding process.

[0016] Preferably, the diameter of the positioning rod 1 is smaller than the diameter of the positioning hole 1; a support plate 1 is slidingly provided on the peripheral side wall of the positioning rod 1, and the support plate 1 is inserted into the positioning hole 1, and the support plate 1 is inserted into and abuts against the positioning hole 1 and the inner walls of the upper and lower pressure plates of the longitudinal arm; a spring 2 is arranged between the positioning rod 1 and the support plate 1, and the two ends of the spring 2 are respectively fixedly arranged on the positioning rod 1 and the support plate 1; a first driving component for driving the support plate 1 to move is provided on the bracket.

[0017] By adopting the above technical solution, the high temperature generated during the welding process of the upper and lower pressure plates of the longitudinal arm will cause the materials of the Yuanbao beam and the positioning rod to undergo thermal expansion. After the welding is completed, as the temperature decreases, the material will shrink, causing the Yuanbao beam to deform, thereby reducing the gap between the positioning rod and the Yuanbao beam, increasing the difficulty of removing the positioning rod; at this time, since the diameter of the positioning rod 1 is smaller than the diameter of the positioning hole 1, when the positioning rod 1 drives the support plate 1 to be inserted into the positioning hole 1, there are gaps between the positioning rod 1 and the support plate 1 and the inner wall of the positioning hole 1, and then under the action of the first driving component, the support plate 1 moves and expands in the direction away from the positioning rod 1, and the spring 2 is stretched until it abuts against the inner wall of the positioning hole 1, reducing the possibility of the longitudinal arm moving; after the welding is completed, the support plate 1 can move to the initial position in the direction close to the positioning rod 1 under the action of the first driving component and the elastic force of the spring 2, and at this time, there are gaps between the positioning rod 1 and the support plate 1 and the positioning hole 1, thereby reducing the friction between the longitudinal arm and the positioning rod 1, thereby reducing the difficulty of separating the longitudinal arm from the positioning rod 1.

[0018] Preferably, the first driving assembly includes a gear 1 and a rack 1, the gear 1 is rotatably arranged on the bracket, the rack 1 is fixedly arranged on the side wall of the inner clamping plate, and the rack 1 is meshed with the gear 1; an abutment rod is fixedly arranged on the support plate 1, and a protrusion is fixedly arranged on the gear 1, and the protrusion is provided with an inclined surface, and the protrusion is slidably engaged with the abutment rod through the inclined surface.

[0019] By adopting the above technical solution, when the inner clamping plate gradually approaches the inner wall of the longitudinal arm, the inner clamping plate drives the rack one to push the gear one to rotate, and the gear one drives the protrusion to rotate. Then the protrusion can gradually push the abutment rod and the support rod one to move away from the positioning rod one through the inclined surface, thereby reducing the difficulty of moving the support plate one.

[0020] Preferably, a stopper is provided on the side wall of the limit plate for vertical sliding, a slope is provided on the top of the stopper facing away from the longitudinal arm, a push rod 1 is fixedly provided on the side wall of the inner clamping plate, the stopper is fitted with the push rod 1 through sliding on the slope, and the push rod 1 abuts against the side of the stopper close to the longitudinal arm; a spring 3 is provided between the stopper and the limit plate, and the two ends of the spring 3 are respectively fixed on the limit plate and the stopper; an abutment block is fixedly provided on the side of the stopper facing away from the longitudinal arm, a pressure block is provided on the bracket, the pressure block is provided with an slope, and the pressure block is fitted with the abutment block through sliding on the slope.

[0021] By adopting the above technical solution, when the clamping plate moves toward the direction close to the longitudinal arm, the push rod 1 can push the block downward through the inclined surface on the block, and the spring 3 is stretched, thereby reducing the difficulty of the inner clamping plate and the push rod moving toward the direction close to the longitudinal arm; when the inner clamping plate abuts against the inner wall of the longitudinal arm, the block is located at the position of the push rod 1 away from the longitudinal arm, and the block moves upward to the initial position under the elastic force of the spring 3; thereafter, when the longitudinal arm needs to be removed, the inner clamping plate can be moved away from the longitudinal arm, and the inner clamping plate drives the push rod 1 to move, and the push rod 1 can push the block and the limit plate to move away from the slide plate, thereby facilitating the sliding plate and the positioning rod 1 to move downward into the bracket, and then facilitating the removal of the longitudinal arm.

[0022] Preferably, the second fixing mechanism comprises a top plate and a pressure plate second, the top plate slides vertically on the support column, the top plate abuts against the bottom of the cross arm, and the support column is provided with a driving member three for driving the top plate to move; the support column is rotatably provided with a pressure plate 2, and the second fixing mechanism also includes a rotating assembly for driving the pressure plate 2 to rotate; the support column is vertically slidable with a positioning rod 2, and the upper and lower pressure plates of the cross arm are both provided with a positioning hole 2 for the positioning rod 2 to be inserted, and the diameter of the positioning rod 2 is smaller than the diameter of the positioning hole 2; the peripheral side wall of the positioning rod 2 is slidably provided with a support plate 2, the support plate 2 is inserted into the positioning hole 2, and the support plate 2 abuts against the inner wall of the upper and lower pressure plates of the cross arm; a spring 4 is provided between the positioning rod 2 and the support plate 2, and the two ends of the spring 4 are respectively fixedly arranged on the positioning rod 2 and the support plate 2; the support column is provided with a second driving assembly for driving the support plate 2 to move.

[0023] By adopting the above technical solution, when the support column moves to the bottom of the cross arm, the top plate can be driven to move upward by the driving member first until the top plate abuts against the bottom of the cross arm. At the same time, the top plate can drive the positioning rod 2 and the support plate 2 to move upward during the upward movement. When the top plate abuts against the bottom of the cross arm, the positioning rod 2 and the support plate 2 are inserted into the positioning hole 2. Subsequently, the support plate 2 is driven by the second driving component to move away from the positioning rod 2 until the support plate 2 abuts against the inner wall of the positioning hole 2. In the process of rising, the top plate can trigger the rotating component to drive the clamping plate to rotate until the clamping plate abuts against the top of the cross arm. In the whole process, the stability of the cross arm during welding is improved, and the welding accuracy of the Yuanbao beam is further improved.

[0024] Preferably, the limiting mechanism includes a limiting block and a spring five, and slide rails are provided on the bottom plate on opposite sides of the support column, the limiting block slides on the support column, and a plurality of slots for the limiting block to be plugged in are sequentially opened on the slide rail along the central axis direction of the ingot beam, and the two ends of the spring five are respectively fixed on the limiting block and the support column, and the limiting block is provided with an arc surface, and the limiting block is slidably matched with the side wall of the slide rail through the arc surface; the limiting mechanism also includes a pushing component for pushing the limiting block to move.

[0025] By adopting the above technical solution, when the support column moves, the support column drives the limit block to move together, the limit block always slides on the side wall of the slide rail, and the spring five is always in a compressed state. When the limit block corresponds to the slot on the slide rail, the spring five can push the limit block to be inserted into the slot; when the support column continues to move, the inner wall of the slide rail can push the limit block compression spring five to move through the arc surface on the limit block until the limit block moves out of the slot. When the support column moves to the lower position of the corresponding cross arm, the limit block is inserted into the corresponding slot at this time, and then the limit block is driven by the pushing component to continue to move into the slot, thereby reducing the possibility of movement of the support column and thereby improving the stability of the support column.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: The staff first places the two longitudinal arms of the Yuanbao beam on the bracket, and positions the longitudinal arms of the Yuanbao beam through the positioning mechanism on the corresponding position of the bracket according to the size of the Yuanbao beam, so as to pre-position the longitudinal arms of the Yuanbao beam and the entire Yuanbao beam, and then moves the two support columns to the lower position of the two transverse arms of the Yuanbao beam respectively, and then limits the two support columns through the limiting mechanism, and fixes the longitudinal arms and transverse arms of the Yuanbao beam respectively through the first fixing mechanism and the second fixing mechanism, so that the entire Yuanbao beam can be fixed for the subsequent welding process, and the entire installation is completed. The arrangement is convenient for positioning and fixing Yuanbao beams of different sizes and dimensions, thereby improving the flexibility and versatility of the device and reducing the production cost; before the two longitudinal arms on the Yuanbao beam are placed on the bracket, the positioning rods 1 in all the positioning mechanisms are located in the bracket. The staff can first move the positioning rods 1 corresponding to the positioning holes 1 on the two longitudinal arms upward to the top of the bracket according to the size of the Yuanbao beam, and then limit the slide plate 1 and the positioning rod 1 through the limiting component; then move the Yuanbao beam, and insert the positioning rods 1 at the corresponding position into the positioning holes 1 on the two longitudinal arms of the Yuanbao beam, Therefore, the entire Yuanbao beam can be positioned, reducing the possibility of positional displacement of the Yuanbao beam during subsequent welding, and indirectly improving the welding accuracy; the high temperature generated during the welding of the upper and lower pressure plates of the longitudinal arm will cause thermal expansion of the Yuanbao beam and the positioning rod materials. After the welding is completed, as the temperature decreases, the material will shrink, causing the Yuanbao beam to deform, thereby reducing the gap between the positioning rod and the Yuanbao beam, increasing the difficulty of removing the positioning rod; at this time, since the diameter of the positioning rod is smaller than the diameter of the positioning hole, when the positioning rod drives the support plate to be inserted into the positioning hole, the positioning rod There is a gap between the support plate 1 and the inner wall of the positioning hole 1. Subsequently, under the action of the first driving component, the support plate 1 moves and expands in the direction away from the positioning rod 1, and the spring 2 is stretched until it abuts against the inner wall of the positioning hole 1, reducing the possibility of movement of the longitudinal arm; when the welding is completed, the support plate 1 can move to the initial position in the direction close to the positioning rod 1 under the action of the first driving component and the elastic force of the spring 2. At this time, there is a gap between the positioning rod 1 and the support plate 1 and the positioning hole 1, thereby reducing the friction between the longitudinal arm and the positioning rod 1, and further reducing the difficulty of separating the longitudinal arm from the positioning rod 1. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a structural schematic diagram highlighting the outer clamping plate in the embodiment of the present application; Figure 3 yes Figure 2 The enlarged view of point A in the middle; Figure 4 is a structural schematic diagram highlighting the support plate 2 in the embodiment of the present application; Figure 5is a schematic diagram of the structure of the bidirectional lead screw in the embodiment of the present application; Figure 6 is a schematic diagram of the structure of the rack 2 in the embodiment of the present application; Figure 7 is a structural schematic diagram highlighting the support plate 1 in an embodiment of the present application; Figure 8 yes Figure 5 The enlarged view of point B in the middle; Description of reference numerals: 100, bottom plate; 1, horizontal arm; 2, longitudinal arm; 3, bracket; 4, positioning mechanism; 40, storage slot; 41, slide plate 1; 42, positioning rod 1; 43, positioning hole 1; 44, return spring 1; 45, limit assembly; 451, limit plate; 452, spring 1; 453, limit groove; 5, first fixing mechanism; 51, inner tightening assembly; 511, inner tightening plate; 512, cylinder 1; 52, External clamping assembly; 521, external clamping plate; 522, cylinder 2; 53, first clamping assembly; 531, abutment plate; 532, clamping plate 1; 533, connecting rod 1; 534, guide rod 1; 535, guide plate; 536, clamping spring; 6, support column; 7, second fixing mechanism; 71, top plate; 72, clamping plate 2; 73, cylinder 3; 8, limit mechanism; 81, limit block; 82, spring 5 ; 83, slide rail; 84, guide rod three; 85, slot; 86, push assembly; 861, slider; 862, push rod two; 863, connecting rod two; 9, support plate one; 10, spring two; 11, guide rod two; 12, first drive assembly; 121, gear one; 122, rack one; 123, abutment rod; 124, bump; 13, connecting rod one; 14, stopper; 15, push rod one; 16, spring three ; 17. Abutment block; 18. Pressure block; 20. Rotating assembly; 201. Rack 2; 202. Gear 2; 203. Connecting rod 2; 21. Positioning rod 2; 22. Positioning hole 2; 23. Support plate 2; 24. Spring 4; 25. Second drive assembly; 251. Motor; 252. Bidirectional lead screw; 253. Drive block 1; 254. Drive block 2; 255. Drive rod; 256. Reset spring 2. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-8 This application is described in further detail.

[0028] The present application embodiment discloses a precise positioning welding device for automobile ingot beams, such as Figure 1As shown, it includes two transverse arms 1 and two longitudinal arms 2, and also includes a base plate 100. A bracket 3 for supporting the two longitudinal arms 2 is provided on the base plate 100. Both ends of the bracket 3 are provided with multiple groups of positioning mechanisms 4 for positioning the longitudinal arms 2. The multiple groups of positioning mechanisms 4 are arranged in sequence along the vertical direction of the central axis of the Yuanbao beam; both ends of the bracket 3 are provided with a first fixing mechanism 5 for fixing the two longitudinal arms 2 of the Yuanbao beam; there are two support columns 6 on the base plate that slide horizontally along the central axis direction of the Yuanbao beam, and the two support columns 6 correspond to the two transverse arms 1 of the Yuanbao beam. The support columns 6 are provided with a second fixing mechanism 7 for fixing the transverse arms 1 on the Yuanbao beam, and a limiting mechanism 8 for limiting the support columns 6 is provided on the base plate.

[0029] like Figure 1 As shown, the staff first places the two longitudinal arms 2 of the Yuanbao beam on the bracket 3, and positions the longitudinal arms 2 of the Yuanbao beam through the positioning mechanism 4 on the corresponding position of the bracket 3 according to the size and size of the Yuanbao beam, thereby pre-positioning the longitudinal arms 2 of the Yuanbao beam and the entire Yuanbao beam, and then moves the two support columns 6 to the lower position of the two transverse arms 1 of the Yuanbao beam respectively, and then limits the two support columns 6 through the limiting mechanism 8, and fixes the longitudinal arms 2 and transverse arms 1 of the Yuanbao beam respectively through the first fixing mechanism 5 and the second fixing mechanism 7, so that the entire Yuanbao beam can be fixed to facilitate the subsequent welding process, and the entire device is convenient for positioning and fixing Yuanbao beams of different sizes and dimensions, thereby improving the flexibility and versatility of the device, thereby reducing the production cost.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, a plurality of storage slots 40 are provided on the top of the bracket 3, and the plurality of storage slots 40 are arranged in a one-to-one correspondence with the plurality of positioning mechanisms 4. The storage slots 40 extend in the vertical direction, and the positioning mechanism 4 comprises a slide plate 41 and a positioning rod 42. The slide plate 41 and the positioning rod 42 both slide vertically in the storage slots 40; the positioning rod 42 is vertically arranged, and the bottom end of the positioning rod 42 is fixedly arranged on the slide plate 41, and the upper and lower pressure plates of the longitudinal arm 2 are both provided with a positioning hole 43 for the positioning rod 42 to be inserted, and the positioning rod 42 is simultaneously inserted into the positioning hole 43 of the upper and lower pressure plates of the longitudinal arm 2, and a reset member for resetting the slide plate 41 is provided in the bracket 3, and the reset member is a reset spring 44, and the two ends of the reset spring 44 are respectively fixedly arranged on the slide plate 41 and the bottom inner wall of the bracket 3; the positioning mechanism 4 also comprises a limiting component 45 for limiting the slide plate 41.

[0031] like Figure 2 and Figure 3As shown, the limit assembly 45 includes a limit plate 451 and a spring 452, and the limit plate 451 slides horizontally on the inner wall of the bracket 3; a plurality of springs 452 are provided and are all horizontally arranged in the bracket 3, and the two ends of the spring 452 are respectively fixed on the limit plate 451 and the inner wall of the bracket 3; the bottom of the limit plate 451 close to the slide plate 41 is provided with an inclined surface, and the slide plate 41 slides on the inclined surface on the limit plate 451 and pushes the limit plate 451 to move, and the slide plate 41 is provided with a limit groove 453 for the limit plate 451 to be plugged in.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, before the two longitudinal arms 2 on the ingot beam are placed on the bracket 3, the positioning rods 42 in all the positioning mechanisms 4 are located in the bracket 3. The staff can first move the positioning rods 42 corresponding to the positioning holes 43 on the two longitudinal arms 2 upward to the top of the bracket 3 according to the size of the ingot beam, and the staff manually moves the slide plate 41 and the positioning rod 42 upward. During the upward movement of the slide plate 41 and the positioning rod 42, the slide plate 41 can push the limit plate 451 to compress the spring 452 through the inclined surface on the limit plate 451 to move, and then when the slide plate 41 When 41 moves to the position corresponding to the limit plate 451 and the limit groove 453, the spring 452 can push the limit plate 451 to be inserted into the limit groove 453 on the slide plate 41. At this time, the positioning rod 42 is located at the top of the bracket 3, so that the slide plate 41 and the positioning rod 42 can be limited; then the Yuanbao beam is moved, and the positioning rod 42 at the corresponding position is inserted into the positioning hole 43 on the two longitudinal arms 2 of the Yuanbao beam, so that the entire Yuanbao beam can be positioned, reducing the possibility of position displacement of the Yuanbao beam during the subsequent welding process, and indirectly improving the welding accuracy.

[0033] like Figure 1 and Figure 2 As shown, the first fixing mechanism 5 includes an inner clamping assembly 51 and an outer clamping assembly 52, and also includes a first clamping assembly 53 for clamping the longitudinal arm 2; the inner clamping assembly 51 includes an inner clamping plate 511 horizontally sliding on the bracket 3 and a driving member 1 for driving the inner clamping plate 511 to move, the driving member 1 is a cylinder 512, the cylinder 512 is installed on the bracket 3, and the inner clamping plate 511 is fixedly arranged on the piston rod on the cylinder 512, and the inner clamping plate 511 abuts against the inner side wall of the longitudinal arm 2; the outer clamping assembly 52 includes an outer clamping plate 521 horizontally sliding on the bracket 3 and a driving member 2 for driving the outer clamping plate 521 to move, the driving member 2 is a cylinder 522, and the outer clamping plate 521 is fixedly arranged on the piston rod on the cylinder 522, and the outer clamping plate 521 abuts and cooperates with the outer side wall of the longitudinal arm 2.

[0034] like Figure 2 and Figure 3As shown, when the positioning rod 42 is inserted into the positioning hole 43 on the longitudinal arm 2 of the Yuanbao beam, that is, the Yuanbao beam is positioned, the staff can turn on the cylinder 512 to push the inner clamping plate 511 to move toward the direction of the corresponding longitudinal arm 2 of the Yuanbao beam, until the inner clamping plate 511 abuts against the inner side wall of the longitudinal arm 2 of the Yuanbao beam. The staff can also turn on the cylinder 522 at the same time to drive the outer clamping plate 521 to move toward the direction of the corresponding longitudinal arm 2 of the Yuanbao beam, until the outer clamping plate 521 abuts against the outer side wall of the longitudinal arm 2 of the Yuanbao beam. During the movement of the outer clamping plate 521, the first clamping component 53 can be triggered. The first clamping component 53 can clamp the corresponding longitudinal arm 2 of the Yuanbao beam onto the bracket 3. The whole process improves the stability of the Yuanbao beam in the subsequent welding process, thereby further improving the welding accuracy.

[0035] like Figure 2 As shown, the first clamping assembly 53 includes an abutment plate 531, a clamping plate 532 and a connecting rod 533. The abutment plate 531 is arranged on the side of the outer clamping plate 521 close to the longitudinal arm 2; a guide rod 534 is fixedly arranged on the side of the abutment plate 531 close to the outer clamping plate 521, and the guide rod 534 is horizontally arranged. The guide rod 534 passes through and slides horizontally on the outer clamping plate 521; a guide plate 535 is fixedly arranged on the top of the outer clamping plate 521, the clamping plate 532 passes through and slides vertically on the guide plate 535, and the two ends of the connecting rod 533 are respectively hinged to the clamping plate 532 and the abutment plate 531; a clamping spring 536 is arranged between the abutment plate 531 and the outer clamping plate 521, the clamping spring 536 is sleeved on the guide rod 534, and the two ends of the clamping spring 536 are respectively fixedly arranged on the abutment plate 531 and the outer clamping plate 521.

[0036] like Figure 2 As shown, when the outer clamping plate 521 moves toward the direction of the longitudinal arm 2 corresponding to the Yuanbao beam, the outer clamping plate 521 can drive the abutting plate 531 to move, and then the abutting plate 531 can abut against the outer side wall of the longitudinal arm 2 corresponding to the Yuanbao beam, and compress the clamping spring 536 to move, and the abutting plate 531 can drive the connecting rod 1 533 to rotate during the movement, and the connecting rod 1 533 can drive the clamping plate 1 532 to move downward until the clamping plate 1 532 abuts against the top of the longitudinal arm 2 corresponding to the Yuanbao beam; the elastic force of the set clamping spring 536 can push the abutting plate 531 to abut against the outer side wall of the longitudinal arm 2 corresponding to the Yuanbao beam, and the clamping plate 1 532 can abut against the top of the longitudinal arm 2 corresponding to the Yuanbao beam, and press it against the bracket 3, thereby further improving the stability of the longitudinal arm 2 during the welding process.

[0037] like Figure 2 , Figure 3 and Figure 4As shown, the diameter of the positioning rod 42 is smaller than the diameter of the positioning hole 43; the peripheral side wall of the positioning rod 42 is provided with a plurality of support plates 9 which slide radially along the cross section of the positioning rod 42, and the support plate 9 is in the shape of an arc plate, which is inserted into the positioning hole 43 and abuts against the inner walls of the upper and lower pressure plates of the longitudinal arm 2; a spring 10 is arranged between the positioning rod 42 and the support plate 9, and a guide rod 11 is passed through the spring 10, one end of the guide rod 11 is fixedly arranged on the inner wall of the support plate 9, and the other end of the guide rod 11 is passed through and slides on the inner wall of the positioning rod 42 to guide the movement of the support plate 23; the two ends of the spring 10 are respectively fixedly arranged on the positioning rod 42 and the support plate 9; the bracket 3 is provided with a first driving component 12 for driving the support plate 9 to move.

[0038] like Figure 2 , Figure 3 and Figure 4 As shown, the high temperature generated during the welding of the upper and lower pressure plates of the longitudinal arm 2 will cause thermal expansion of the materials of the Yuanbao beam and the positioning rod. After the welding is completed, as the temperature decreases, the material will shrink, causing the Yuanbao beam to deform, thereby reducing the gap between the positioning rod and the Yuanbao beam, increasing the difficulty of removing the positioning rod; at this time, since the diameter of the positioning rod 42 is smaller than the diameter of the positioning hole 43, when the positioning rod 42 drives the support plate 9 to be inserted into the positioning hole 43, there is a gap between the positioning rod 42 and the support plate 9 and the inner wall of the positioning hole 43, and then in the first drive component 1 2, the support plate 9 moves and expands in the direction away from the positioning rod 42, and the spring 10 is stretched until it abuts against the inner wall of the positioning hole 43, thereby reducing the possibility of movement of the longitudinal arm 2; when welding is completed, the support plate 9 can move to the initial position in the direction close to the positioning rod 42 under the action of the first driving component 12 and the elastic force of the spring 10. At this time, there is a gap between the positioning rod 42 and the support plate 9 and the positioning hole 43, thereby reducing the friction between the longitudinal arm 2 and the positioning rod 42, and further reducing the difficulty of separating the longitudinal arm 2 from the positioning rod 42.

[0039] like Figure 2 , Figure 3 and Figure 4 As shown, the first driving assembly 12 includes a gear 121 and a rack 122, the gear 121 is arranged along a direction perpendicular to the central axis of the ingot beam, and is fixedly arranged on the side wall of the inner clamping plate 511; the gear 121 is rotatably arranged on the top of the bracket 3, and the rack 122 is meshed with the gear 121; an abutment rod 123 is fixedly arranged on the support plate 9, and the abutment rod 123 is vertically arranged, and a plurality of protrusions 124 are fixedly arranged on the top of the gear 121, and the plurality of protrusions 124 are arranged one by one corresponding to the abutment rods 123 on the plurality of support plates 9, and an inclined surface is provided on the protrusion 124, and the protrusion 124 is slidably matched with the abutment rod 123 through the inclined surface.

[0040] like Figure 2 , Figure 3 and Figure 4 As shown, when the inner clamping plate 511 gradually approaches the inner wall of the longitudinal arm 2, the inner clamping plate 511 drives the rack 122 to push the gear 121 to rotate, and the gear 121 drives the protrusion 124 to rotate. Then the protrusion 124 can gradually push the abutment rod 123 and the support rod 1 to move away from the positioning rod 42 through the inclined surface, thereby reducing the difficulty of moving the support plate 9.

[0041] like Figure 2 and Figure 3 As shown, a connecting rod 13 is fixedly provided on the side wall of the limit plate 451, and the connecting rod 13 is penetrated to the outside of the bracket 3 and slides horizontally on the side wall of the bracket 3. A stopper 14 is penetrated on the connecting rod 13, and the stopper 14 is located outside the bracket 3, and the stopper 14 slides vertically on the connecting rod 13. The top of the stopper 14 is provided with an inclined surface on the side away from the longitudinal arm 2, and a push rod 15 is fixedly provided on the side wall of the inner clamping plate 511. The stopper 14 slides on the inclined surface to cooperate with the push rod 15, and the push rod 15 abuts against the stopper 14 is close to the side of the longitudinal arm 2; a spring three 16 is provided between the stopper 14 and the limiting plate 451, and the two ends of the spring three 16 are respectively fixedly connected to the connecting rod 13 and the stopper 14 on the limiting plate 451; an abutment block 17 is fixedly provided on the side of the stopper 14 away from the longitudinal arm 2, and a pressure block 18 is fixedly provided on the side wall of the bracket 3 at a position on the side of the stopper 14 away from the longitudinal arm 2, and an inclined surface is provided at the bottom of the pressure block 18 near one end of the abutment block 17, and the pressure block 18 is slidably matched with the abutment block 17 through the inclined surface.

[0042] like Figure 2 and Figure 3 As shown, when the inner clamping plate 511 moves toward the direction close to the longitudinal arm 2, the push rod 15 can push the stop block 14 downward through the inclined surface on the stop block 14, and the spring three 16 is stretched, thereby reducing the difficulty of the inner clamping plate 511 and the push rod 15 moving toward the direction close to the longitudinal arm 2; when the inner clamping plate 511 abuts against the inner wall of the longitudinal arm 2, the stop block 14 is located at a position where the push rod 15 is away from the longitudinal arm 2, and at this time, the stop block 14 moves upward to the initial position under the elastic force of the spring three 16; thereafter, when the longitudinal arm 2 needs to be removed, the inner clamping plate 511 can be moved in the direction away from the longitudinal arm 2, and the inner clamping plate 511 drives the push rod 15 to move, and the push rod 15 can push the stop block 14 and the limit plate 451 to move in the direction away from the slide plate 41, thereby facilitating the downward movement of the slide plate 41 and the positioning rod 42 into the bracket 3, and then facilitating the removal of the longitudinal arm 2.

[0043] like Figure 1 and Figure 5As shown, the second fixing mechanism 7 includes a top plate 71 and a clamping plate 72. The top plate 71 slides vertically on the support column 6. The top plate 71 abuts against the bottom of the cross arm 1. The support column 6 is provided with a driving member 3 for driving the top plate 71 to move. The driving member 3 is a cylinder 73. The cylinder 73 is installed on the top of the support column 6, and the piston rod on the cylinder 73 is vertically arranged. The top plate 71 is fixedly arranged on the piston rod on the cylinder 73.

[0044] like Figure 1 , Figure 5 and Figure 6 As shown, the clamping plate 2 72 abuts against the top of the cross arm 1, and the second fixing mechanism 7 also includes a rotating assembly 20; the rotating assembly 20 includes a rack 201 and a gear 202, the rack 201 is vertically arranged, and the top end of the rack 201 is fixedly arranged on the piston rod on the cylinder 3 73; a connecting rod 203 is arranged on the clamping plate 2 72, the connecting rod 203 is vertically arranged, and the top end of the connecting rod 203 is fixedly arranged on the clamping plate 2 72, and a rotating shaft is fixedly arranged at the bottom end of the connecting rod 203, and the connecting rod 203 is rotatably arranged on the side wall of the support column 6 through the rotating shaft, and the gear 202 is sleeved and fixed on the rotating shaft, and the gear 202 is meshed with the rack 201.

[0045] like Figure 5 , Figure 6 and Figure 7 As shown, a positioning rod 21 is vertically slidable on the support column 6, and the bottom end of the positioning rod 21 is fixedly set on the top plate 71. The upper and lower pressure plates of the cross arm 1 are provided with positioning holes 22 for the positioning rod 21 to be inserted, and the diameter of the positioning rod 21 is smaller than the diameter of the positioning hole 22; the peripheral side wall of the positioning rod 21 is provided with a plurality of support plates 23 that slide radially along the cross section of the positioning rod 21, and the support plates 23 are in the shape of arc plates, which are inserted into the positioning holes 22, and the support plates 23 abut against the inner walls of the upper and lower pressure plates of the cross arm 1; a plurality of springs 24 are provided between the positioning rod 21 and the support plates 23, and the two ends of the springs 24 are respectively fixedly set on the positioning rod 21 and the support plates 23.

[0046] like Figure 5 , Figure 7 and Figure 8As shown, the support column 6 is provided with a second driving assembly 25, which includes a motor 251 and a bidirectional lead screw 252. The motor 251 is installed on the support column 6, and the bidirectional lead screw 252 is vertically rotatably arranged on the side wall of the support column 6, and the bottom end of the bidirectional lead screw 252 is fixedly arranged on the rotating shaft of the motor 251. The side wall of the support column 6 is vertically slidably provided with a driving block 1 253 and a driving block 2 254. The driving block 1 253 is threadedly matched with the bidirectional lead screw 252, and the driving block 254 is arranged at the bottom of the top rod, and the driving block 1 2 53 abuts against the driving block 254; a plurality of driving rods 255 are vertically arranged on the driving block 254, the bottom end of the driving rod 255 is fixedly arranged on the driving block 254, and the plurality of driving rods 255 are arranged one-to-one with the plurality of supporting plates 23, the top of the driving rod 255 is provided with an inclined surface, and the driving rod 255 is slidably matched with the bottom end side wall of the supporting plate 23 through the inclined surface; a reset spring 256 is sleeved on the driving rod 255, and the two ends of the reset spring 256 are respectively fixedly arranged on the bottom of the top plate 71 and the driving block 254.

[0047] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, when the support column 6 moves to the bottom of the cross arm 1, the cylinder 3 73 can be turned on first to drive the top plate 71 to move upward until the top plate 71 abuts against the bottom of the cross arm 1. At the same time, the top plate 71 can drive the positioning rod 21 and the support plate 23 to move upward during the upward movement. When the top plate 71 abuts against the bottom of the cross arm 1, the positioning rod 21 and the support plate 23 are inserted into the positioning hole 22. Then the motor 251 is turned on, and the motor 251 drives the bidirectional lead screw 252 to rotate. The bidirectional lead screw 252 drives the driving block 1 253 to move upward, and the driving block 1 253 pushes the driving block 2 254 and the driving rod 255 to move upward. The return spring 256 is compressed, and the driving rod 255 gradually pushes the support plate 23 to move away from the positioning rod 21 through the inclined surface until the support plate 23 abuts against the inner wall of the positioning hole 22. The spring 4 24 is stretched, and the top plate 71 can simultaneously drive the rack 201 to move upward during the rising process. The rack 201 drives the gear 202 to rotate, and the rotation of the gear 202 drives the connecting rod 203 and the clamping plate 272 to rotate until the clamping plate abuts against the top of the cross arm 1. The whole process improves the stability of the cross arm 1 during welding, and further improves the welding accuracy of the Yuanbao beam.

[0048] like Figure 1 , Figure 5 and Figure 8As shown, the limiting mechanism 8 includes a limiting block 81 and a spring five 82, and slide rails 83 are provided on the bottom plate 100 at opposite sides of the support column 6. A guide rod three 84 is horizontally provided at one end of the limiting block 81 close to the support column 6, one end of the guide rod three 84 is fixedly provided on the limiting block 81, and the other end of the guide rod three 84 is penetrated and horizontally slides on the side wall of the support column 6; an arc surface is provided on the limiting block 81, and the limiting block 81 is slidably matched with the side wall of the slide rail 83 through the arc surface, and a plurality of slots 85 for plugging the limiting block 81 are sequentially opened on the slide rail 83 along the central axis direction of the ingot beam; the spring five 82 is horizontally sleeved on the guide rod three 84, and the two ends of the spring five 82 are respectively fixedly provided on the limiting block 81 and the support column 6.

[0049] like Figure 1 , Figure 5 and Figure 8 As shown, the limiting mechanism 8 also includes a pushing component 86 for pushing the limiting block 81 to move, and the pushing component 86 includes a slider 861, which slides vertically on the side wall of the support column 6, and the slider 861 is threadedly engaged with the bidirectional lead screw 252. A push rod 862 slides horizontally on one side of the support column 6 close to the limiting block 81, and one end of the push rod 862 abuts against the limiting block 81. A connecting rod 863 is arranged between the push rod 862 and the slider 861, and the two ends of the connecting rod 863 are respectively hinged to the push rod 862 and the slider 861.

[0050] like Figure 1 , Figure 5 and Figure 8 As shown, when the support column 6 moves, the support column 6 drives the limit block 81 to move together, the limit block 81 always slides on the side wall of the slide rail 83, and the spring five 82 is always in a compressed state. When the limit block 81 corresponds to the slot 85 on the slide rail 83, the spring five 82 can push the limit block 81 to be inserted into the slot 85; when the support column 6 continues to move, the inner wall of the slide rail 83 can push the limit block 81 to compress the spring five 82 through the arc surface on the limit block 81 until the limit block 81 moves out of the slot 85. When the column 6 moves to the lower position of the corresponding cross arm 1, the limit block 81 is inserted into the corresponding slot 85. Then, when the motor 251 drives the bidirectional screw 252 to rotate, the driving block 1 253 moves upward, and the slider 861 moves downward at the same time. The slider 861 drives the connecting rod 2 863 to rotate, and the connecting rod 2 863 drives the push rod 2 862 to move. The push rod 2 862 can push the limit block 81 to continue to move into the slot 85, thereby reducing the possibility of movement of the support column 6, thereby improving the stability of the support column 6.

[0051] The implementation principle of the embodiment of the present application is as follows: the staff first places the two longitudinal arms 2 of the Yuanbao beam on the bracket 3, and positions the longitudinal arms 2 of the Yuanbao beam through the positioning mechanism 4 on the corresponding position of the bracket 3 according to the size and size of the Yuanbao beam, thereby pre-positioning the longitudinal arms 2 of the Yuanbao beam and the entire Yuanbao beam, and then moves the two support columns 6 to the lower position of the two transverse arms 1 of the Yuanbao beam respectively, and then limits the two support columns 6 through the limiting mechanism 8, and fixes the longitudinal arms 2 and transverse arms 1 of the Yuanbao beam respectively through the first fixing mechanism 5 and the second fixing mechanism 7, so that the entire Yuanbao beam can be fixed to facilitate the subsequent welding process, and the entire device is convenient for positioning and fixing Yuanbao beams of different sizes and dimensions, thereby improving the flexibility and versatility of the device, and thus reducing the production cost.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A precise positioning welding device for an automobile ingot beam, comprising two transverse arms (1) and two longitudinal arms (2), characterized in that: The invention also comprises a bottom plate (100), on which a bracket (3) for supporting the two longitudinal arms (2) is provided, and at both ends of the bracket (3) a plurality of positioning mechanisms (4) for positioning the longitudinal arms (2) are provided, and the plurality of positioning mechanisms (4) are arranged in sequence along a direction perpendicular to the central axis of the Yuanbao beam; at both ends of the bracket (3) a first fixing mechanism (5) for fixing the two longitudinal arms (2) of the Yuanbao beam is provided; on the bottom plate (100) there are two support columns (6) for sliding along the central axis of the Yuanbao beam, the two support columns (6) correspond to the two transverse arms (1) of the Yuanbao beam, and the support columns (6) are provided with a second fixing mechanism (7) for fixing the transverse arms (1) on the Yuanbao beam; and on the bottom plate (100) a limiting mechanism (8) for limiting the position of the support columns (6) is provided.

2. According to claim 1, a precise positioning welding device for automobile ingot beams is characterized in that: The positioning mechanism (4) comprises a slide plate (41) and a positioning rod (42), wherein the positioning rod (42) is vertically arranged, and one end of the positioning rod (42) is fixedly arranged on the slide plate (41), the upper and lower pressure plates of the longitudinal arm (2) are both provided with a positioning hole (43) for the positioning rod (42) to be inserted, and the positioning rod (42) is simultaneously inserted into the upper and lower pressure plates of the longitudinal arm (2), the slide plate (41) and the positioning rod (42) are both vertically slidable on the bracket (3), and a reset member for resetting the slide plate (41) is provided in the bracket (3), and the positioning mechanism (4) also comprises a limit assembly (45) for limiting the slide plate (41).

3. The precise positioning welding device for automobile ingot beam according to claim 2 is characterized in that: The limiting assembly (45) comprises a limiting plate (451) and a spring (452), wherein the limiting plate (451) slides horizontally in the bracket (3), the spring (452) is arranged in the bracket (3), and the two ends of the spring (452) are respectively fixedly arranged on the limiting plate (451) and the inner wall of the bracket (3); the limiting plate (451) is provided with an inclined surface on a side close to the slide plate (41), and the limiting plate (451) is slidably matched with the slide plate (41) through the inclined surface, and the slide plate (41) is provided with a limiting groove (453) for the limiting plate (451) to be plugged into.

4. The precise positioning welding device for automobile ingot beam according to claim 1 is characterized in that: The first fixing mechanism (5) comprises an inner clamping assembly (51) and an outer clamping assembly (52), and also comprises a first clamping assembly (53) for clamping the longitudinal arm (2); The inner clamping assembly (51) comprises an inner clamping plate (511) sliding on the bracket (3) and a driving member 1 for driving the inner clamping plate (511) to move, wherein the inner clamping plate (511) abuts against the inner side wall of the longitudinal arm (2); The outer clamping assembly (52) comprises an outer clamping plate (521) that slides on the bracket (3) and a second driving member used for driving the outer clamping plate (521) to move, wherein the outer clamping plate (521) is in contact with the outer side wall of the longitudinal arm (2).

5. The precise positioning welding device for automobile ingot beam according to claim 4 is characterized in that: The first clamping assembly (53) includes an abutment plate (531), a clamping plate 1 (532) and a connecting rod 1 (533), wherein the abutment plate (531) slides horizontally on the outer abutment plate (521), and the clamping plate 1 (532) slides vertically on the outer abutment plate (521), and the two ends of the connecting rod 1 (533) are respectively hinged to the clamping plate 1 (532) and the abutment plate (531); a spring 1 (452) is provided between the abutment plate (531) and the outer abutment plate (521), and the two ends of the spring 1 (452) are respectively fixedly arranged on the abutment plate (531) and the outer abutment plate (521).

6. The precise positioning welding device for automobile ingot beam according to claim 2 is characterized in that: The diameter of the positioning rod (42) is smaller than the diameter of the positioning hole (43); a support plate (9) is slidably disposed on the peripheral side wall of the positioning rod (42), the support plate (9) is inserted into the positioning hole (43), the support plate (9) is inserted into the positioning hole (43), and abuts against the inner walls of the upper and lower pressure plates of the longitudinal arm (2); a spring (10) is disposed between the positioning rod (42) and the support plate (9), and the two ends of the spring (10) are respectively fixedly disposed on the positioning rod (42) and the support plate (9); a first driving component (12) for driving the support plate (9) to move is disposed on the bracket (3).

7. The precise positioning welding device for automobile ingot beam according to claim 6 is characterized in that: The first driving assembly (12) comprises a gear 1 (121) and a rack 1 (122), wherein the gear 1 (121) is rotatably mounted on the bracket (3), the rack 1 (122) is fixedly mounted on the side wall of the inner abutting plate (511), and the rack 1 (122) is meshed with the gear 1 (121); an abutting rod (123) is fixedly mounted on the support plate 1 (9), and a protrusion (124) is fixedly mounted on the gear 1 (121), wherein the protrusion (124) is provided with an inclined surface, and the protrusion (124) is slidably engaged with the abutting rod (123) via the inclined surface.

8. The precise positioning welding device for automobile ingot beam according to claim 3 is characterized in that: The side wall of the limit plate (451) is provided with a stopper (14) which slides vertically, and a slope is provided on the top of the stopper (14) on the side away from the longitudinal arm (2). A push rod (15) is fixedly provided on the side wall of the inner clamping plate (511). The stopper (14) is fitted with the push rod (15) by sliding on the slope, and the push rod (15) abuts against the side of the stopper (14) close to the longitudinal arm (2); the stopper (14) and the longitudinal arm (2) are connected to each other. A spring three (16) is provided between the limit plates (451), and the two ends of the spring three (16) are respectively fixedly arranged on the limit plates (451) and the stop block (14); a contact block (17) is fixedly arranged on the side of the stop block (14) away from the longitudinal arm (2), and a pressure block (18) is provided on the bracket (3), and the pressure block (18) is provided with an inclined surface, and the pressure block (18) is slidably matched with the contact block (17) through the inclined surface.

9. The precise positioning welding device for automobile ingot beam according to claim 1 is characterized in that: The second fixing mechanism (7) comprises a top plate (71) and a second clamping plate (72), wherein the top plate (71) slides vertically on the support column (6), the top plate (71) abuts against the bottom of the cross arm (1), and the support column (6) is provided with a driving member (3) for driving the top plate (71) to move; a second clamping plate (72) is rotatably provided on the support column (6), and the second fixing mechanism (7) further comprises a rotating assembly (20) for driving the second clamping plate (72) to rotate; a second positioning rod (21) slides vertically on the support column (6), and the upper and lower clamping plates of the cross arm (1) are provided with a plug-in for the second positioning rod (21). Positioning hole 2 (22), the diameter of positioning rod 2 (21) is smaller than the diameter of positioning hole 2 (22); a supporting plate 2 (23) is slidably disposed on the peripheral side wall of positioning rod 2 (21), the supporting plate 2 (23) is inserted into positioning hole 2 (22), and the supporting plate 2 (23) abuts against the inner walls of the upper and lower pressure plates of the cross arm (1); a spring 4 (24) is disposed between positioning rod 2 (21) and supporting plate 2 (23), and the two ends of the spring 4 (24) are respectively fixedly disposed on positioning rod 2 (21) and supporting plate 2 (23); a second driving component (25) for driving supporting plate 2 (23) to move is disposed on the support column (6).

10. The precise positioning welding device for automobile ingot beam according to claim 1, characterized in that: The limiting mechanism (8) comprises a limiting block (81) and a spring (82). The bottom plate (100) is provided with slide rails (83) on opposite sides of the support column (6). The limiting block (81) slides on the support column (6). The slide rail (83) is provided with a plurality of slots (85) for inserting the limiting block (81) in sequence along the central axis direction of the ingot beam. The two ends of the spring (82) are respectively fixed to the limiting block (81) and the support column (6). The limiting block (81) is provided with an arc surface. The limiting block (81) is matched with the side wall of the slide rail (83) by sliding on the arc surface. The limiting mechanism (8) also comprises a pushing component (86) for pushing the limiting block (81) to move.

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