CN212496188U

CN212496188U - Welding tool

Info

Publication number: CN212496188U
Application number: CN202020905145.7U
Authority: CN
Inventors: 王世伟; 刘小岗
Original assignee: Zhejiang Huyun Photoelectric Equipment Co Ltd
Current assignee: Zhejiang Huyun Photoelectric Equipment Co Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-02-09
Anticipated expiration: 2030-05-26

Abstract

The utility model relates to a frock technical field, the utility model discloses a technical scheme does: the utility model provides a welding tool, includes the landing slab, be equipped with expansion clamping mechanism on the landing slab, expansion clamping mechanism's left side, right side and rear side all are equipped with side clamping mechanism, expansion clamping mechanism's front side is equipped with side top clamping mechanism. This frock can fix the panel beating subassembly frame of rectangle well through three side clamping mechanism and a side top clamping mechanism, presss from both sides tightly four sides of the panel beating subassembly of rectangle and can also press from both sides tightly the top simultaneously, provides the welding accuracy, improves production efficiency.

Description

Welding tool

Technical Field

The utility model relates to a frock technical field especially involves a welding frock.

Background

The sheet metal component need weld each little sheet metal component in actual processing production process, consequently, seem especially important to the fixed with these sheet metal components, and the sheet metal component mainly adopts welding robot to weld in welding process, and fixed accuracy is very important, and is rare to this type of special frock on the market.

Welding tools for rectangular sheet metal components with the length and the width in a certain proportion are few and few, and the same adaptability of rectangular frames with different specifications and sizes cannot be met; meanwhile, most of existing tools easily generate excessive extrusion on sheet metal parts when clamping, and the deformation of products is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a welding frock.

The above technical purpose of the utility model is realized with following technical scheme:

a welding tool comprises a platform plate, wherein an expansion clamping mechanism is arranged on the platform plate, side clamping mechanisms are arranged on the left side, the right side and the rear side of the expansion clamping mechanism, and a side top clamping mechanism is arranged on the front side of the expansion clamping mechanism; the expansion clamping mechanism comprises a first bottom plate, four corners of the upper surface of the first bottom plate are respectively provided with a sliding seat in a sliding manner, an expansion block is fixed on the outer side of the sliding seat, a liftable moving plate is arranged above the first bottom plate, four corners of the moving plate are respectively connected with a rotating rod in a rotating manner, the rotating rods are further connected with a fixed block in a rotating manner, and the fixed block is fixed at the upper end of the sliding seat; the side clamping mechanism comprises a first sliding plate which is arranged in a sliding manner, two mounting seats are vertically fixed at the upper end of the first sliding plate, a pushing cylinder is fixed at each mounting seat, and the pushing cylinder is connected with a pushing block; the side top clamping mechanism comprises a second sliding plate which is arranged in a sliding mode, the upper end of the second sliding plate is vertically fixed with a push plate, two welding clamping cylinders are fixed on the front surface of the push plate, and the welding clamping cylinders are connected with a pressure arm.

The utility model discloses a further set up to: two adjacent sliding seats are arranged in a splayed structure, each sliding seat is in an L-shaped structure, a first sliding block is arranged on the upper surface of the first base plate corresponding to the sliding seat, a first sliding rail is arranged at the position of the first sliding block in a sliding manner, and the sliding seats are fixed at the upper ends of the first sliding rails; expansion clamping mechanism is still including being fixed in the first servo motor of landing slab lower extreme, first servo motor's output axle head is connected with the lead screw through the shaft coupling, the surperficial middle part of movable plate is equipped with first through-hole, the both sides of first through-hole all are equipped with the guiding hole, fixed screw nut in the first through-hole, the lead screw pass first bottom plate and with screw nut screw connects soon, the lead screw extends to screw nut's top.

The utility model discloses a further set up to: the guide shaft penetrates through the shaft sleeve and is fixedly connected with the first bottom plate and the limiting plate respectively, a second through hole is formed in the middle of the surface of the limiting plate, and the lead screw is located in the second through hole.

The utility model discloses a further set up to: the four corners department of movable plate all is equipped with the positioning seat, positioning seat department rotates fixed dwang through the round pin axle, the other end of dwang is connected with the fixed block rotation through the round pin axle, the expansion piece is the triangular prism shape, the cross-section of expansion piece is isosceles right triangle.

The utility model discloses a further set up to: the side clamping mechanism further comprises a second bottom plate fixed at the upper end of the platform plate, two second sliding blocks arranged in parallel are arranged at the upper end of the second bottom plate, a second sliding rail is arranged at the position of the second sliding block in a sliding manner, the second bottom plate is fixed at the upper ends of the two second sliding rails, the mounting seat is of an L-shaped structure, the push cylinder is fixed on the side surface of the mounting seat, the piston rod end of the push cylinder is connected with a fastening plate, the fastening plate is fixedly connected with the push block, the push block is of a square plate-shaped structure, a first rack is fixed on the lower surface of the second bottom plate, the side clamping mechanism further comprises a second servo motor fixed at the lower end of the platform plate, the output shaft end of the second servo motor penetrates through the platform plate and extends to the lower part of the second bottom plate, and the output shaft end of the second servo motor is connected, the first gear is meshed with the first rack, and the second servo motor drives the first gear to rotate so as to drive the push block to be close to or far away from the expanding and clamping mechanism.

The utility model discloses a further set up to: the side top clamping mechanism further comprises a third bottom plate fixed at the upper end of the platform plate and a third servo motor fixed at the lower end of the platform plate, a third sliding block arranged in parallel is arranged at the upper end of the third bottom plate, a third sliding rail is arranged at the position of the third sliding block in a sliding mode, the second sliding plate is fixed at the upper ends of the two third sliding rails, a second rack is fixed on the lower surface of the third bottom plate, the output shaft end of the third servo motor penetrates through the platform plate and extends to the lower portion of the third bottom plate, the output shaft end of the third servo motor is connected with a second gear, the second gear is meshed with the second rack, and the push plate is of an L-shaped plate structure.

To sum up, the utility model discloses following beneficial effect has:

1) the tool can well fix the rectangular sheet metal component frame through the three side clamping mechanisms and the one side top clamping mechanism, clamp four sides of the rectangular sheet metal component and clamp the top at the same time, provide welding accuracy and improve production efficiency;

2) the push block and the push plate of the tool adopt a control mode of a servo motor, so that the pressure on the metal plate component frame is small, and the metal plate component frame cannot deform;

3) the expansion block is in a triangular column shape, the contact surface of the expansion block and the product to be processed is a right-angle surface, and the product to be processed can be prevented from deforming due to large-area contact; the tool greatly improves the adaptability of the rectangular frames with the length and the width in a certain proportion, and can limit and fix the rectangular frames with different specifications and sizes;

4) the bottom plate of the tool is provided with the unfilled corner surface, so that the expansion block can be prevented from colliding with the first bottom plate when contracting in the actual use process, and the service life of the device can be prolonged;

5) this device drives four expansion blocks through the movable plate and moves simultaneously, can improve spacing accuracy to improve the machining precision.

Drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a schematic structural view of the expanding clamping mechanism.

Fig. 4 is a top view of the expanding clamping mechanism.

Fig. 5 is a perspective view of the expanding clamping mechanism.

Fig. 6 is a plan view of the moving plate.

Fig. 7 is a schematic structural view of the side clamping mechanism.

Fig. 8 is a side view of the side clamping mechanism.

Fig. 9 is a schematic structural view of the first rack and the first gear of the side clamping mechanism.

Fig. 10 is a schematic view of the structure of the side top clamping mechanism.

Fig. 11 is a perspective view of the side top clamping mechanism.

FIG. 12 is a front view of the side top clamping mechanism.

Fig. 13 is a structural schematic diagram I of the sheet metal part after welding.

Fig. 14 is a structural schematic diagram of the welded sheet metal part II.

The corresponding part names indicated by the numbers and letters in the drawings:

wherein: 1. a platform plate; 2. an expansion clamping mechanism; 3. a side clamping mechanism; 4. a side top clamping mechanism; 21. a first base plate; 22. a sliding seat; 23. an expansion block; 24. moving the plate; 25. rotating the rod; 26. a fixed block; 27. a first slider; 28. a first slide rail; 29. a first servo motor; 210. a lead screw; 211. a lead screw nut; 212. a limiting plate; 213. a shaft sleeve; 214. a guide shaft; 215. positioning seats; 31. a first sliding plate; 32. a mounting seat; 33. a push cylinder; 34. a push block; 35. a second base plate; 36. a second slider; 37. a second slide rail; 38. a fastening plate; 39. a first rack; 310. a second servo motor; 311. a first gear; 41. a second sliding plate; 42. pushing the plate; 43. welding a clamping cylinder; 44. pressing the arm; 45. a third base plate; 46. a third servo motor; 47. a third slider; 48. a third slide rail; 49. a second rack; 410. a second gear.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 12, the welding tool provided by the present invention comprises a platform plate 1, wherein an expansion clamping mechanism 2 is arranged on the platform plate 1, side clamping mechanisms 3 are arranged on the left side, the right side and the rear side of the expansion clamping mechanism 2, and a side top clamping mechanism 4 is arranged on the front side of the expansion clamping mechanism 2; the expansion clamping mechanism 2 comprises a first bottom plate 21, four corners of the upper surface of the first bottom plate 21 are provided with sliding seats 22 in a sliding manner, expansion blocks 23 are fixed on the outer sides of the sliding seats 22, a liftable moving plate 24 is arranged above the first bottom plate 21, four corners of the moving plate 24 are respectively connected with rotating rods 25 in a rotating manner, the rotating rods 25 are further connected with a fixed block 26 in a rotating manner, and the fixed block 26 is fixed at the upper end of the sliding seats 22; the side clamping mechanism 3 comprises a first sliding plate 31 which is arranged in a sliding manner, two mounting seats 32 are vertically fixed at the upper end of the first sliding plate 31, a pushing cylinder 33 is fixed at the mounting seats 32, and the pushing cylinder 33 is connected with a pushing block 34; the side top clamping mechanism 4 comprises a second sliding plate 41 which is arranged in a sliding manner, the upper end of the second sliding plate 41 is vertically fixed with a push plate 42, two welding clamping cylinders 43 are fixed on the front surface of the push plate 42, and the welding clamping cylinders 43 are connected with a pressure arm 44.

In the above technical solution, the number of the expansion blocks 23 is four, each sliding seat 22 corresponds to one expansion block 23, and the expansion blocks 23 move on the surface of the platform plate 1; placing each sheet metal component on the upper end of a platform plate 1, then simultaneously operating an expansion clamping mechanism 2, a side clamping mechanism 3 and a side top clamping mechanism 4, driving four expansion blocks 23 to move outwards by a moving plate 24, driving a push block 34 to move inwards by a first sliding plate 31 of the side clamping mechanism 3, driving a push plate 42 to move inwards by a second sliding plate 41, when the expansion clamping mechanism 2, the side clamping mechanism 3 and the side top clamping mechanism 4 gradually clamp each sheet metal component, manually adjusting the position of each sheet metal component to enable each sheet metal component to form an integral frame, then clamping the sheet metal components forming an integral frame by the expansion clamping mechanism 2, the side clamping mechanism 3 and the side top clamping mechanism 4, controlling a pressure arm 44 to move downwards and to be in close contact with the sheet metal components by a welding clamping cylinder 43 of the last side top clamping mechanism 4, through above-mentioned working process, alright in order to constitute a whole frame and fixed firm with each panel beating subassembly that needs the welded, the multiaxis welding robot of rethread welds whole frame.

As shown in fig. 3 to fig. 6, two adjacent sliding seats 22 are arranged in a splayed structure, each sliding seat 22 is in an L-shaped structure, a first sliding block 27 is arranged at a position, corresponding to the sliding seat 22, on the upper surface of the first bottom plate 21, a first sliding rail 28 is arranged at the first sliding block 27 in a sliding manner, and the sliding seat 22 is fixed at the upper end of the first sliding rail 28; the expansion clamping mechanism 2 further comprises a first servo motor 29 fixed at the lower end of the platform plate 1, an output shaft end of the first servo motor 29 is connected with a lead screw 210 through a coupler, a first through hole is formed in the middle of the surface of the moving plate 24, guide holes are formed in two sides of the first through hole, the lead screw nut 211 is fixed in the first through hole, the lead screw 210 penetrates through the first bottom plate 21 and is in threaded connection with the lead screw nut 211, and the lead screw 210 extends to the upper portion of the lead screw nut 211; a limiting plate 212 is arranged above the first bottom plate 21, a shaft sleeve 213 is fixed in the guiding hole, a guiding shaft 214 penetrates through the shaft sleeve 213 and is respectively and fixedly connected with the first bottom plate 21 and the limiting plate 212, a second through hole is arranged in the middle of the surface of the limiting plate 212, and the screw 210 is located in the second through hole; four corners departments of movable plate 24 all are equipped with positioning seat 215, positioning seat 215 department rotates fixed dwang 25 through the round pin axle, the other end of dwang 25 rotates with fixed block 26 through the round pin axle and is connected, expansion block 23 is the triangular prism shape, the cross-section of expansion block 23 is isosceles right triangle.

In the above technical solution, two adjacent sliding seats 22 are arranged in a structure like a Chinese character 'ba', that is, the expansion clamping mechanism 2 mainly welds a sheet metal part with a rectangular structure, the sliding seats 22 move along with the movement of the slide rail 28, the sliding seats 22 are in an L-shaped structure, the number of the sliding seats 22 is four, the four sliding seats 22 are respectively located at four corners of the upper surface of the first bottom plate 21, the number of the expansion blocks 23 is also four, and one sliding seat 22 corresponds to one expansion block 23; because the four corners of the moving plate 24 are rotatably connected with the rotating rods 25, the rotating rods 25 are rotatably connected with the fixed block 26, and the fixed block 26 is fixedly connected with the sliding seat 22, when the moving plate 24 moves up and down, the moving plate 24 can drive the rotating rods 255 to move up and down near the end of the moving plate 24, and meanwhile, the end of the rotating rods 25 far away from the moving plate 24 can drive the expansion block 23 to contract inwards or expand outwards; it should be noted that the rotating lever 25 is inclined in the initial state, the height of the end of the rotating lever 25 close to the fixed block 26 is higher than the height of the end of the rotating lever 25 close to the moving plate 22, and the height of the end of the rotating lever 255 close to the fixed block 26 is kept unchanged; the utility model discloses a movable plate 24, dwang 25, fixed block 26, sliding seat 22 and expansion piece 23 have realized the simultaneous movement of four expansion pieces 23, contract or strut to the outside to the inboard simultaneously promptly.

Combine fig. 5 to show, first bottom plate 21 is the rectangle structure, four angle departments of first bottom plate 21 all have the unfilled corner face, expansion piece 23 is the triangular prism shape, the cross-section of expansion piece 23 is isosceles right triangle, expansion piece 23 includes a right angle face and an inclined plane, unfilled corner face and inclined plane are parallel arrangement, and unfilled corner face and the inclined plane parallel arrangement of expansion piece 23 that first bottom plate 21 department set up, when expansion piece 23 constantly contracts to the inboard, unfilled corner face and inclined plane contact, play a spacing effect promptly, and simultaneously, the setting of unfilled corner face also can prevent first bottom plate and appear damaging when expanding piece 23 contact.

The servo motor 29 rotates to drive the screw rod 210 to rotate, and as the screw rod nut 211 is fixed at the position of the moving plate 24, the screw rod 210 can drive the screw rod nut 211 to move up and down when rotating, that is, the moving plate 24 is driven to move up and down, and the arrangement of the limiting plate 212 can prevent the moving plate 24 from being separated from the guide shaft 214 to move, so that the service life of the device is prolonged.

The rotating rod 25 is rotatably connected with the positioning seat 215 of the moving plate 24, and the fixed block 26 is rotatably connected with the positioning seat 215, so that the expansion block 23 can be ensured to move along with the up-and-down movement of the moving plate 24; in an initial state, the height of the end part of the rotating rod 25 close to the fixed block 26 is higher than that of the end part of the rotating rod 25 close to the moving plate 24, the height of the end part of the rotating rod 25 close to the fixed block 26 is kept unchanged all the time, along with the continuous rising of the moving plate 24, the moving plate 24 drives the end part of the rotating rod 25 close to the moving plate 24 to rise, so that the rotating rod 25 can give a thrust to the fixed block 26 to enable the expansion block 23 to move outwards, when the height of the moving plate 24 is kept the same as that of the fixed block 26, namely the height of the rotating rod 25 is kept the same as that of the fixed block 26, the expansion block 23 achieves the maximum expansion effect, and when the moving plate 24 continues to rise, the moving plate; it is worth noting that the right-angle face of the expansion block 23 is provided with a groove, a pressure sensor is arranged in the groove and connected with a control system, the control system is further connected with a servo motor, when the expansion block 23 is attached to the sheet metal component and generates pressure with a certain numerical value, the pressure sensor collects the pressure at the inner wall of the sheet metal component and provides the pressure for the control system, and the control system controls the first servo motor 29 to stop working.

Referring to fig. 7 to 9, the side clamping mechanism 3 further includes a second bottom plate 35 fixed to the upper end of the platform plate 1, two second sliders 36 arranged in parallel are disposed at the upper end of the second bottom plate 35, a second slide rail 37 is slidably disposed at the second slider 36, the second bottom plate 35 is fixed to the upper ends of the two second slide rails 37, the mounting seat 32 is an L-shaped structure, the push cylinder 33 is fixed to the side surface of the mounting seat 32, a piston rod end of the push cylinder 33 is connected to a fastening plate 38, the fastening plate 38 is fixedly connected to the push block 34, the push block 34 is a square plate-shaped structure, a first rack 39 is fixed to the lower surface of the second bottom plate 35, the side clamping mechanism 3 further includes a second servo motor 310 fixed to the lower end of the platform plate 1, an output shaft end of the second servo motor 310 passes through the platform plate 1 and extends to the lower side of the second bottom plate 35, the output shaft end of the second servo motor 310 is connected with a first gear 311, the first gear 311 is meshed with the first rack 39, and the second servo motor 310 drives the first gear 311 to rotate so as to drive the push block 34 to approach or depart from the direction of the expansion clamping mechanism 2.

Among the above-mentioned technical scheme, second servo motor 310 work drives first gear 311 and rotates, and first gear 311 rotates and drives first rack 39 and removes, and first rack 39 is fixed in the lower extreme of second bottom plate 35, and consequently first rack 39 drives second bottom plate 35 and slides on second slider 36, thereby the ejector pad 34 can move to the inboard side and compress tightly the side of panel beating subassembly, and the stroke that ejector pad 34 can be controlled in the setting of push cylinder 33 is longer, improves the suitability.

Referring to fig. 10 to 12, the side top clamping mechanism 4 further includes a third bottom plate 45 fixed to the upper end of the platform plate 1 and a third servo motor 46 fixed to the lower end of the platform plate 1, another third sliding block 47 arranged in parallel is arranged at the upper end of the third bottom plate 45, a third sliding rail 48 is slidably arranged at the third sliding block 47, the second sliding plate 41 is fixed to the upper ends of the two third sliding rails 48, a second rack 49 is fixed to the lower surface of the third bottom plate 45, an output shaft end of the third servo motor 46 passes through the platform plate 1 and extends to the lower side of the third bottom plate 45, an output shaft end of the third servo motor 46 is connected to a second gear 410, the second gear 410 is engaged with the second rack 49, and the pushing plate 42 is in an L-shaped plate structure.

In the above technical solution, the side top clamping mechanism 4 is used for compressing one side edge of the sheet metal component and compressing the top of the sheet metal component, the third servo motor 46 works to drive the second gear 410 to rotate, the second gear 410 rotates to drive the second rack 49 to move, and the second rack 49 is fixed at the lower end of the third bottom plate 45, so that the second rack 49 drives the third bottom plate 45 to slide on the third slider 47, the push plate 42 moves inward to compress the side edge of the sheet metal component, and after the push plate 43 and the side edge of the sheet metal component are compressed, the welding clamping cylinder 43 drives the pressing arm 44 to press down, thereby compressing the top of the sheet metal component; it should be noted that the push plate 42 is a plate-shaped structure with an L-shaped structure, the contact surface of the push plate with one side of the sheet metal component is larger than that of the push block 34, and the two press arms 44 connected to the two welding and clamping cylinders 43 are symmetrically arranged.

And pressure sensors are arranged at the push block 34 of the side clamping mechanism 3 and the push plate 4 of the side top clamping mechanism 4, and the working principle of the pressure sensors is the same as that of the pressure sensors at the expansion clamping mechanism 2.

Combine 13-14 to be sheet metal component's whole frame, can see out from the figure that it has outside turn-ups, expansion piece 23 removes on the landing slab 1 surface among this technical scheme, the distance between expansion piece 23 and the landing slab 1 is less than turn-ups's thickness, operating personnel takes place the condition that the sheet metal component installed reversely sometimes easily in fixed process, expansion piece 23 is through this kind of setting up, can prevent this kind of condition from taking place, also can avoid the sheet metal component to take place in the condition that the sheet metal component can not take out after the welding finishes.

The utility model discloses a theory of operation: in an initial state, the rotating rod 25 is in an initial state, namely the expansion block 23 is also in a contraction state, when a product needs to be clamped, a sheet metal component is placed on the platform plate 1, then the expansion block 23 of the expansion clamping mechanism 2 is controlled to be expanded, the push block 34 of the side clamping mechanism 3 moves inwards and the push plate 42 of the side top clamping mechanism 4 moves inwards, when each clamping mechanism gradually clamps the sheet metal component, the manual operation is assisted beside until the frame of the sheet metal component is fixed, the welding clamping cylinder 43 is controlled to fix the top of the sheet metal component through the pressure arm 44, then the sheet metal component is welded through the multi-axis welding robot, after the welding is finished, the expansion block 23 contracts, the push block 34 moves outwards, the push plate 42 moves outwards, and the pressure arm 44 leaves the surface of the sheet metal component, so that the welded sheet metal component is taken down;

the clamping welding cylinder is in a model of 'Yadecke JCK40X90AM1 CHLK'; the model of the first servo motor, the second servo motor and the third servo motor is 'Anchuan servo SGM7J-04AFC 6E'.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a welding frock, includes landing slab (1), its characterized in that: an expansion clamping mechanism (2) is arranged on the platform plate (1), side clamping mechanisms (3) are arranged on the left side, the right side and the rear side of the expansion clamping mechanism (2), and a side top clamping mechanism (4) is arranged on the front side of the expansion clamping mechanism (2); the expansion clamping mechanism (2) comprises a first bottom plate (21), four corners of the upper surface of the first bottom plate (21) are provided with sliding seats (22) in a sliding mode, expansion blocks (23) are fixed on the outer sides of the sliding seats (22), a liftable moving plate (24) is arranged above the first bottom plate (21), four corners of the moving plate (24) are connected with rotating rods (25) in a rotating mode, the rotating rods (25) are further connected with fixed blocks (26) in a rotating mode, and the fixed blocks (26) are fixed to the upper end of the sliding seats (22); the side clamping mechanism (3) comprises a first sliding plate (31) which is arranged in a sliding manner, two mounting seats (32) are vertically fixed at the upper end of the first sliding plate (31), a pushing cylinder (33) is fixed at the mounting seats (32), and the pushing cylinder (33) is connected with a pushing block (34); the side top clamping mechanism (4) comprises a second sliding plate (41) which is arranged in a sliding mode, the upper end of the second sliding plate (41) is vertically fixed with a push plate (42), two welding clamping cylinders (43) are fixed on the front surface of the push plate (42), and the welding clamping cylinders (43) are connected with a pressure arm (44).

2. The welding tool of claim 1, wherein: two adjacent sliding seats (22) are arranged in a splayed structure, each sliding seat (22) is in an L-shaped structure, a first sliding block (27) is arranged at the position, corresponding to the corresponding sliding seat (22), of the upper surface of the first bottom plate (21), a first sliding rail (28) is arranged at the position of the first sliding block (27) in a sliding manner, and the sliding seats (22) are fixed at the upper ends of the first sliding rails (28); expansion clamping mechanism (2) still including being fixed in first servo motor (29) of landing slab (1) lower extreme, the output shaft end of first servo motor (29) is connected with lead screw (210) through the shaft coupling, the surface middle part of movable plate (24) is equipped with first through-hole, the both sides of first through-hole all are equipped with the guiding hole, fixed lead screw nut (211) in the first through-hole, lead screw (210) pass first bottom plate (21) and with lead screw nut (211) screw thread connects soon, lead screw (210) extend to the top of lead screw nut (211).

3. The welding tool of claim 2, wherein: the top of first bottom plate (21) is equipped with limiting plate (212), guiding hole internal fixation axle sleeve (213), guiding axle (214) pass axle sleeve (213) and respectively with first bottom plate (21) and limiting plate (212) fixed connection, the surperficial middle part of limiting plate (212) is equipped with the second through-hole, lead screw (210) are located in the second through-hole.

4. The welding tool of claim 1, wherein: four angle departments of movable plate (24) all are equipped with positioning seat (215), positioning seat (215) department rotates fixed dwang (25) through the round pin axle, the other end of dwang (25) is connected through round pin axle and fixed block (26) rotation, expansion piece (23) are the triangle column shape, the cross-section of expansion piece (23) is isosceles right triangle.

5. The welding tool of claim 1, wherein: the side clamping mechanism (3) further comprises a second bottom plate (35) fixed at the upper end of the platform plate (1), the upper end of the second bottom plate (35) is provided with two second sliding blocks (36) arranged in parallel, the second sliding blocks (36) are provided with second sliding rails (37) in a sliding manner, the second bottom plate (35) is fixed at the upper ends of the two second sliding rails (37), the mounting seat (32) is of an L-shaped structure, the push cylinder (33) is fixed on the side surface of the mounting seat (32), the piston rod end of the push cylinder (33) is connected with a fastening plate (38), the fastening plate (38) is fixedly connected with the push block (34), the push block (34) is of a square plate-shaped structure, a first rack (39) is fixed on the lower surface of the second bottom plate (35), the side clamping mechanism (3) further comprises a second servo motor (310) fixed at the lower end of the platform plate (1), the output shaft end of the second servo motor (310) penetrates through the platform plate (1) and extends to the lower portion of the second bottom plate (35), the output shaft end of the second servo motor (310) is connected with a first gear (311), the first gear (311) is meshed with the first rack (39), and the second servo motor (310) drives the first gear (311) to rotate so as to drive the push block (34) to be close to or far away from the direction of the expansion clamping mechanism (2).

6. The welding tool of claim 1, wherein: the side top clamping mechanism (4) further comprises a third bottom plate (45) fixed at the upper end of the platform plate (1) and a third servo motor (46) fixed at the lower end of the platform plate (1), the upper end of the third bottom plate (45) is provided with another third sliding block (47) which is arranged in parallel, a third slide rail (48) is arranged at the third slide block (47) in a sliding way, the second sliding plate (41) is fixed at the upper ends of the two third slide rails (48), a second rack (49) is fixed on the lower surface of the third bottom plate (45), the output shaft end of the third servo motor (46) penetrates through the platform plate (1) and extends to the lower part of the third bottom plate (45), the output shaft end of the third servo motor (46) is connected with a second gear (410), the second gear (410) is meshed with the second rack (49), and the push plate (42) is of an L-shaped plate structure.