CN110153619B

CN110153619B - Welding tool for automobile parts

Info

Publication number: CN110153619B
Application number: CN201910556721.3A
Authority: CN
Inventors: 金永杰
Original assignee: Tianjin Shihyun Automotive Parts Co ltd
Current assignee: Tianjin Shihyun Automotive Parts Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2021-02-19
Anticipated expiration: 2039-06-25
Also published as: CN110153619A

Abstract

The invention relates to the field of automobile part processing, in particular to a welding tool for automobile parts, which comprises a frame, wherein a bearing bracket is fixedly arranged above the frame, a first clamping device, a second clamping device, a third clamping device and a fourth clamping device are fixedly arranged on the frame, the first clamping device comprises a first lever mechanism and a second lever mechanism, the first lever mechanism comprises a first driving cylinder, a first lever, a first support and a first pressure plate, and the second lever mechanism comprises a second driving cylinder, a second lever, a second support and a second pressure plate; the welding tool further comprises a second welding tool, and the second welding tool comprises a second frame, a head end clamping mechanism and a tail end clamping mechanism. The invention achieves the effects of reducing the processing cost and improving the welding precision.

Description

Welding tool for automobile parts

Technical Field

The invention relates to the field of automobile part processing, in particular to a welding tool for an automobile part.

Background

The automobile is used as a modern common travel tool, a plurality of parts are required inside the automobile, one of the parts is shown in fig. 1 and comprises a pipe body 11, a first fixing piece 12, a second fixing piece 13 and a third fixing piece 14, and the first fixing piece 12, the second fixing piece 13 and the third fixing piece 14 are all welded on the pipe body 11; the first fixing member 12 includes a circular disc 121, two reinforcing ribs 122 and a connecting plate 123, the circular disc 121 is welded to one end of the pipe body 11 through the connecting plate 123 and the reinforcing ribs 122, the second fixing member 13 is in a square pipe shape, the second fixing member 13 is welded to the middle of the pipe body 1, the third fixing member 14 is in a plate shape, the third fixing member 14 is also fixed to the middle of the pipe body 11, and the second fixing member 13 and the third fixing member 14 are located on two sides of the pipe body 11.

Foretell automobile parts generally is manual setting-out welding, and later manual welding again, and efficiency is lower, is not suitable for batch production, and if adopt efficient welding robot welding, then need be alone to work piece design welding frock, fix a position and fix body, first mounting, second mounting and third mounting, just can guarantee welding quality.

Disclosure of Invention

The invention aims to provide a welding tool for automobile parts, which has the effects of stably clamping and fixing the parts and ensures the stability and the high efficiency of welding.

The invention aims to be realized by the following technical scheme:

a welding tool for automobile parts is used for fixedly clamping the parts, the parts comprise a pipe body, a first fixing part, a second fixing part and a third fixing part and comprise a frame, a supporting bracket is fixedly arranged above the frame, a first clamping device, a second clamping device, a third clamping device and a fourth clamping device are fixedly arranged on the frame, the first clamping device comprises a first lever mechanism and a second lever mechanism, the first lever mechanism comprises a first driving cylinder, a first lever, a first support and a first pressure plate, the first support is fixed above the frame, the middle part of the first lever is hinged with the first support through a horizontal shaft, the first pressure plate is fixed at one end, close to the supporting bracket, of the first lever, and two ends of the first driving cylinder are respectively hinged with one end, far away from the first pressure plate, of the first lever and the frame; the second lever mechanism comprises a second driving cylinder, a second lever, a second support and a second pressure plate, the second support is fixed above the frame, the middle part of the second lever is hinged with the second support through a horizontal shaft, the second pressure plate is fixed at one end, close to the bearing bracket, of the second lever, two ends of the second driving cylinder are hinged with one end, far away from the second pressure plate, of the second lever and the frame respectively, and the first pressure plate and the second pressure plate are located above two ends of the bearing bracket respectively.

By adopting the technical scheme, at first place the body of spare part in the support bracket top, restart first drive actuating cylinder and second and drive actuating cylinder and stretch out, first drive actuating cylinder utilizes first lever to drive first pressure disk and compress tightly the body, the second drives actuating cylinder and utilizes the second lever to drive the second pressure disk and compress tightly the body, utilize first pressure disk, the second pressure disk and the interact of support bracket, thereby fix the body stable clamping in the top of support bracket, later reuse second clamping device to press from both sides tight first mounting, third clamping device presss from both sides tight second mounting, fourth clamping device presss from both sides tight third mounting, guarantee first mounting, the second mounting, the stability between third mounting and the body, later can utilize welding robot to weld the seam at a high speed.

The invention is further configured to: the second clamping device comprises a first supporting portion, a supporting plate, a third lever, a third driving cylinder and a third pressure plate, the supporting plate is fixed above the frame, the first supporting portion is fixed on one side, close to the supporting bracket, of the supporting plate, one end of the third lever is hinged to the upper portion of the supporting plate through a horizontal shaft, two ends of the third driving cylinder are hinged to one end, far away from the supporting bracket, of the third lever and the supporting plate respectively, and the third pressure plate is fixed at one end, close to the supporting bracket, of the third lever.

Through adopting above-mentioned technical scheme, at first with first mounting overlap joint in the top of first supporting part to with first mounting laminating backup pad, start the third and drive the actuating cylinder and stretch out, the third drives actuating cylinder and utilizes the third lever can drive the third pressure disk and be close to the backup pad, thereby utilizes third pressure disk and backup pad to press from both sides tight first mounting, plays spacing and fixed first mounting's effect.

The invention is further configured to: the first fixing piece comprises a disc, a reinforcing rib and a connecting plate, a positioning hole is formed in the disc, a positioning rod is fixedly arranged on the side face, close to one side of the bearing bracket, of the supporting plate, and the positioning rod is in plug-in fit with the positioning hole.

Through adopting above-mentioned technical scheme, utilize the grafting cooperation of locating hole and locating lever, can fix a position the disc fast accurately to accurate location stiffening rib and connecting plate promote the precision of first mounting location.

The invention is further configured to: the third clamping device comprises a second supporting part, a fourth lever, an inserting rod, a fourth support and a fourth driving cylinder, the second supporting part and the fourth support are fixedly connected with the frame, the second supporting part is positioned between the supporting bracket and the fourth support, the fourth lever is hinged with the fourth support through a horizontal shaft, the inserting rod is fixed at one end, close to the supporting bracket, of the fourth lever, and two ends of the fourth driving cylinder are respectively hinged with one end, far away from the inserting rod, of the fourth lever and the supporting bracket; the top of the second fixing piece is provided with a jack, and the inserted link is in inserted connection with the jack.

Through adopting above-mentioned technical scheme, at the in-process of installation second mounting, at first with the second mounting overlap joint in the top of second supporting part, start fourth drive cylinder and stretch out, fourth drive cylinder passes through the fourth lever and drives the inserted bar and remove towards the second mounting for the inserted bar inserts in the jack, thereby fixes a position and compresses tightly the second mounting, guarantees the relative position between second mounting and the body, convenient welding.

The invention is further configured to: the fourth clamping device comprises a fifth support, a fifth driving cylinder and a push plate, the fifth support is fixed above the frame, the fifth driving cylinder is fixed on one side of the fifth support far away from the supporting bracket, the push plate is located on one side of the fifth support close to the supporting bracket, and a telescopic rod of the fifth driving cylinder is fixedly connected with the push plate.

Through adopting above-mentioned technical scheme, place the third mounting between push pedal and body, start the fifth and drive actuating cylinder, the fifth drives actuating cylinder and promotes the push pedal and is close to towards the support bracket to support the fastening with the third mounting and fix on the body, the convenience is welded the third mounting.

The invention is further configured to: the push pedal is provided with a placing hole, the third fixing piece is fixedly provided with a placing rod, and the placing rod is matched with the placing hole in an inserting mode.

Through adopting above-mentioned technical scheme, will place the pole and insert and place downthehole after, can tentatively guarantee the position relation between third mounting and the push pedal, later along with the fifth removal that drives actuating cylinder and drive the push pedal, just can support the third mounting accurately and steadily tightly on the body under the condition that need not artifical supplementary handheld, promote the stability and the accuracy of third mounting.

The invention is further configured to: the support bracket comprises a first support column and a second support column which are fixed above the frame, an insertion column is arranged above the first support column in a protruding mode, an insertion block is arranged above the second support column in a protruding mode, one end of the tube body is inserted into the insertion block, a limiting hole is formed in the tube body below the end, away from the insertion block, of the tube body, and the insertion column is in insertion fit with the limiting hole.

Through adopting above-mentioned technical scheme, placing the in-process of body, can utilizing the grafting locate action of post and spacing hole and the spacing locate action of body and inserted block of inserting, can guarantee the body at the relative position of first bearing post and second bearing post, later recycle first clamping device and come the clamp and fix the body, guarantee that every body is placed the same in the position on bearing bracket, help promoting the accuracy and the interrelatedness of each part butt joint.

The second purpose of the invention is realized by the following technical scheme:

a welding robot uses the welding tool of the automobile parts and is used for fixing and welding the parts.

Through adopting above-mentioned technical scheme, this kind of welding robot can fix and weld spare part under the effect of welding frock.

In summary, the present invention has the following technical effects:

1. the first lever mechanism and the second lever mechanism are fixedly arranged on the frame, and are used for clamping two ends of the pipe body respectively, so that the pipe body is abutted and fixed, a reference is provided for the subsequent installation and positioning of the first fixing piece, the second fixing piece and the third fixing piece, and the stability and the accuracy of welding are ensured;

2. through the top setting at the support bracket insert the post, utilize the spacing hole grafting cooperation of inserting post and body to increase stability and the uniformity of body overlap joint on the support bracket, promote the fixed precision of follow-up part.

Drawings

FIG. 1 is a schematic illustration of three sisters of a part;

FIG. 2 is a schematic three-dimensional structure of a part welding tool;

FIG. 3 is a schematic three-dimensional structure highlighting a third clamping means;

FIG. 4 is an enlarged view of FIG. 3 taken at detail A;

FIG. 5 is a schematic three-dimensional structure of a second welding fixture;

fig. 6 is an enlarged view of a portion B in fig. 5.

In the figure, 1, parts; 11. a pipe body; 112. a pipe body is arranged; 113. a lower pipe body; 12. a first fixing member; 121. a disc; 1211. positioning holes; 122. reinforcing ribs; 123. a connecting plate; 13. a second fixing member; 131. a jack; 14. a third fixing member; 141. placing a rod; 2. a frame; 21. a support bracket; 211. a first support column; 212. a second support column; 3. a first clamping device; 31. a first lever mechanism; 311. a first driving cylinder; 312. a first lever; 313. a first bracket; 314. a first platen; 32. a second lever mechanism; 321. a second driving cylinder; 322. a second lever; 323. a second bracket; 324. a second platen; 4. a second clamping device; 41. a first support section; 42. a support plate; 421. positioning a rod; 43. a third lever; 44. a third driving cylinder; 45. a third platen; 5. a third clamping device; 51. a second support portion; 511. a second plunger; 52. a fourth lever; 53. inserting a rod; 54. a fourth bracket; 55. a fourth drive cylinder; 6. a fourth clamping device; 61. a fifth support; 62. a fifth driving cylinder; 63. pushing the plate; 631. placing holes; 7. a second welding tool; 71. a second frame; 711. a second support bracket; 72. a head end clamping mechanism; 721. a limiting mechanism; 7211. a splicing air cylinder; 7212. an insertion block; 7. a support member; 722. a first hold-down mechanism; 7221. a first hold-down cylinder; 7222. a first auxiliary plate; 7223. a first compression lever; 7224. a first compact block; 73. a terminal clamping mechanism; 731. a second hold-down cylinder; 732. a second compression lever; 733. a clamping plate; 7331. a clamping groove; 734. pulling the cylinder; 735. a second auxiliary plate.

Detailed Description

The first embodiment is as follows:

as shown in fig. 1, the embodiment describes an automobile part, which includes a pipe body 11, a first fixing member 12, a second fixing member 13, and a third fixing member 14, wherein the first fixing member 12, the second fixing member 13, and the third fixing member 14 are all welded to the pipe body 11; the first fixing member 12 includes a circular disc 121, two reinforcing ribs 122 and a connecting plate 123, the circular disc 121 is welded to one end of the pipe body 11 through the connecting plate 123 and the reinforcing ribs 122, the second fixing member 13 is in a square pipe shape, the second fixing member 13 is welded to the middle of the pipe body 11, the third fixing member 14 is in a plate shape, the third fixing member 14 is also fixed to the middle of the pipe body 11, and the second fixing member 13 and the third fixing member 14 are located on two sides of the pipe body 11.

For positioning, a limiting hole may be formed below the tube 11, a positioning hole 1211 is formed on the disc 121, a vertical insertion hole 131 is formed on the second fixing member 13, and a placing rod 141 is fixedly disposed on a side of the third fixing member 14 away from the tube 11.

The pipe body 11 is divided into an upper pipe body 112 and a lower pipe body 113, the pipe body 11 is arranged in an irregular curve, the upper pipe body 112 and the lower pipe body 113 are both semicircular pipes, and the upper pipe body 112 and the lower pipe body 113 are welded to form the complete pipe body 11 after being aligned.

Example two:

as shown in fig. 2, the present embodiment describes a welding fixture for automobile parts, which is used for fixing a part 1 in the first embodiment, the welding fixture includes a frame 2, a first clamping device 3, a second clamping device 4, a third clamping device 5, and a fourth clamping device 6, a support bracket 21 is fixedly disposed on the frame 2, the first clamping device 3, the second clamping device 4, the third clamping device 5, and the fourth clamping device 6 are respectively fixed above the frame 2, a pipe 11 is lapped above the support bracket 21, the first clamping device 3, the second clamping device 4, the third clamping device 5, and the fourth clamping device 6 are respectively used for clamping the pipe 11, the first fixing member 12, the second fixing member 13, and the third fixing member 14, so as to ensure the relative position accuracy of the pipe 11, the first fixing member 12, the second fixing member 13, and the third fixing member 14, and facilitate welding the pipe 11, the first fixing member 12, the second fixing member 13, and the third fixing member 14, A first fixing member 12, a second fixing member 13, and a third fixing member 14.

The support stability and accuracy of the support bracket 21 to the pipe body 11 are very important because the first fixing member 12, the second fixing member 13 and the third fixing member 14 are based on the pipe body 11. Combine shown in fig. 2 and 3, support bracket 21 is including all fixing first support post 211 (see fig. 3) and the second support post 212 (see fig. 2) in frame 2 top, and first support post 211 top protrusion is provided with inserts the post, and the top protrusion of second support post 212 is provided with the inserted block, and the periphery department of inserted block is provided with the shoulder, and the one end of body 11 is inserted in the inserted block and is taken on the shoulder, and spacing hole has been seted up to body 11 one end below of keeping away from the inserted block, the post is inserted the cooperation of pegging graft with spacing hole. In the process of placing the pipe body 11, the inserting positioning function of the inserting column and the limiting hole and the limiting positioning function of the pipe body 11 and the inserting block can be utilized, the relative position of the pipe body 11 on the first bearing column 211 and the second bearing column 212 can be ensured, then the first clamping device 3 is utilized to clamp and fix the pipe body 11, the position of each pipe body 11 placed on the bearing bracket 21 is ensured to be the same, and the accuracy and the interactivity of butt joint of all parts are improved.

As shown in fig. 2, the first clamping device 3 includes a first lever mechanism 31 and a second lever mechanism 32, the first lever mechanism 31 includes a first driving cylinder 311, a first lever 312, a first bracket 313 and a first pressure plate 314, the first bracket 313 is fixed above the frame 2, the middle part of the first lever 312 is hinged with the first bracket 313 through a horizontal shaft, the first pressure plate 314 is fixed at one end of the first lever 312 close to the support bracket 21, and two ends of the first driving cylinder 311 are respectively hinged with one end of the first lever 312 far from the first pressure plate 314 and the frame 2; the second lever mechanism 32 includes a second driving cylinder 321, a second lever 322, a second bracket 323, and a second pressure plate 324, the second bracket 323 is fixed above the frame 2, the middle portion of the second lever 322 is hinged to the second bracket 323 via a horizontal shaft, the second pressure plate 324 is fixed at one end of the second lever 322 close to the support bracket 21, two ends of the second driving cylinder 321 are respectively hinged to one end of the second lever 322 far from the second pressure plate 324 and the frame 2, and the first pressure plate 314 and the second pressure plate 324 are respectively located above two ends of the support bracket 21. Firstly, the tube 11 of the component 1 is placed above the support bracket 21, then the first driving cylinder 311 and the second driving cylinder 321 are started to extend, the first driving cylinder 311 drives the first pressure plate 314 to compress the tube 11 by using the first lever 312, the second driving cylinder 321 drives the second pressure plate 324 to compress the tube 11 by using the second lever 322, and the tube 11 is stably clamped and fixed above the support bracket 21 by using the interaction of the first pressure plate 314, the second pressure plate 324 and the support bracket 21.

As shown in fig. 2, the second clamping device 4 includes a first supporting portion 41, a supporting plate 42, a third lever 43, a third driving cylinder 44 and a third pressure plate 45, the supporting plate 42 is fixed above the frame 2, the first supporting portion 41 is fixed on one side of the supporting plate 42 close to the supporting bracket 21, the third lever 43 is L-shaped, one end of the third lever 43 is hinged with the upper side of the supporting plate 42 through a horizontal shaft, two ends of the third driving cylinder 44 are respectively hinged with one end of the third lever 43 away from the supporting bracket 21 and the supporting plate 42, and the third pressure plate 45 is fixed on one end of the third lever 43 close to the supporting bracket 21. The first fixing member 12 is attached to the supporting plate 42, the third driving cylinder 44 is started to extend, the third driving cylinder 44 can drive the third pressing plate 45 to be close to the supporting plate 42 by using the third lever 43, and therefore the first fixing member 12 is clamped by using the third pressing plate 45 and the supporting plate 42, and the effects of limiting and fixing the first fixing member 12 are achieved.

When the first fixing member 12 is mounted on the second clamping device 4, the mounting positions of the first fixing member 12 and the second clamping device 4 determine the relative positional accuracy between the first fixing member 12 and the pipe body 11. Therefore, as shown in fig. 2, a positioning rod 421 may be fixedly disposed on a side surface of the supporting plate 42 close to the supporting bracket 21, and the positioning rod 421 may be inserted into and engaged with the positioning hole 1211. By the inserting fit of the positioning hole 1211 and the positioning rod 421 and the supporting function of the connecting plate 123 and the first supporting portion 41, and by the fitting of the disc 121 and the supporting plate 42, the disc 121 can be positioned quickly and accurately, so that the reinforcing rib 122 and the connecting plate 123 can be positioned accurately, and the positioning accuracy of the first fixing member 12 can be improved.

As shown in fig. 3, the third clamping device 5 includes a second supporting portion 51, a fourth lever 52, an insertion rod 53, a fourth bracket 54 and a fourth driving cylinder 55, the second supporting portion 51 and the fourth bracket 54 are fixedly connected to the frame 2, the second supporting portion 51 is located between the supporting bracket 21 and the fourth bracket 54, the fourth lever 52 is hinged to the fourth bracket 54 through a horizontal shaft, the insertion rod 53 is fixed to one end of the fourth lever 52 close to the supporting bracket 21, the insertion rod 53 is in insertion fit with the insertion hole 131 (see fig. 4), and two ends of the fourth driving cylinder 55 are respectively hinged to one end of the fourth lever 52 far from the insertion rod 53 and the supporting bracket 21. In the process of installing the second fixing member 13, firstly, the second fixing member 13 is overlapped above the second supporting portion 51, the fourth driving cylinder 55 is started to extend out, the fourth driving cylinder 55 drives the inserting rod 53 to move towards the second fixing member 13 through the fourth lever 52, so that the inserting rod 53 is inserted into the inserting hole 131, the second fixing member 13 is positioned and pressed, the relative position between the second fixing member 13 and the pipe body 11 is ensured, and welding is facilitated.

In order to further improve the accuracy of fixing the second supporting portion 51 to the second fixing member 13 and the positioning accuracy between the second fixing member 13 and the tube 11, as shown in fig. 4, a second inserting rod 511 may be protruded above the second supporting portion 51, the inserting hole 131 of the second fixing member 13 penetrates through the second fixing member 13, and the second inserting rod 511 is inserted into the inserting hole 131 from bottom to top. The shape matched with the lower end of the second fixing piece 13 can be arranged above the second supporting part 51, so that when the second fixing piece 13 is placed, the second fixing piece 13 is more easily attached to the upper part of the second supporting part 51 and has certain positioning and limiting effects, and the relative position between the second fixing piece 13 and the second supporting part 51 can be accurately positioned by utilizing the positioning effect of the second inserting rod 511 and the inserting hole 131.

As shown in fig. 2, the fourth clamping device 6 comprises a fifth bracket 61, a fifth driving cylinder 62 and a push plate 63, the fifth bracket 61 is fixed above the frame 2, the fifth driving cylinder 62 is fixed on the side of the fifth bracket 61 away from the support bracket 21, the push plate 63 is located on the side of the fifth bracket 61 close to the support bracket 21, and the telescopic rod of the fifth driving cylinder 62 is fixedly connected with the push plate 63. The third fixing member 14 is placed between the push plate 63 and the pipe body 11, the fifth driving cylinder 62 is started, and the fifth driving cylinder 62 pushes the push plate 63 to approach the support bracket 21, so that the third fixing member 14 is tightly fixed on the pipe body 11, and the third fixing member 14 is conveniently welded.

As shown in fig. 2, in order to improve the stability of the initial position installation between the third fixing member 14 and the push plate 63, a placing hole 631 may be formed in the push plate 63, and the placing rod 141 of the third fixing member 14 may be inserted into and fitted to the placing hole 631. After the placing rod 141 is inserted into the placing hole 631, the position relationship between the third fixing member 14 and the push plate 63 can be preliminarily ensured, and then the third fixing member 14 can be accurately and stably abutted against the pipe body 11 without manually assisting in the walking along with the movement of the push plate 63 driven by the fifth driving cylinder 62, so that the stability and the accuracy of the third fixing member 14 are improved.

Example three:

a welding method of automobile parts comprises the following steps.

S1: a molded tube body 11, a first fixing member 12, a second fixing member 13, and a third fixing member 14.

The first fixing member 12, the second fixing member 13 and the third fixing member 14 are formed conveniently due to simple structures, and are generally formed by welding, wherein each part is firstly processed into a required shape and then assembled and welded. The pipe body 11 is a general special-shaped piece, the cross-sectional area of the pipe body 11 is uneven, the cost is high due to the casting mode, and the pipe body is not suitable for batch production. In the invention, the pipe body 11 is also formed by welding, the pipe body 11 is divided into the upper pipe body 112 and the lower pipe body 113, the upper pipe body 112 and the lower pipe body 113 are both semicircular pipe bodies, and are welded and formed after being spliced, and the upper pipe body 112 and the lower pipe body 113 are formed by sheet body extrusion deformation, so that the production cost can be greatly reduced, and the mass production can be realized.

As shown in fig. 5, a second welding tool 7 is adopted in the process of welding the upper pipe body 112 and the lower pipe body 113, the second welding tool 7 comprises a second frame 71, a head end clamping mechanism 72 and a tail end clamping mechanism 73, and a second support bracket 711 is fixedly arranged above the second frame 71; the head end clamping mechanism 72 comprises an insertion limiting mechanism 721 and a first pressing mechanism 722, the first pressing mechanism 722 comprises a first pressing cylinder 7221, a first auxiliary plate 7222, a first pressing lever 7223 and a first pressing block 7224, the first auxiliary plate 7222 is vertically fixed above the second frame 71, the first pressing lever 7223 is hinged to the first auxiliary plate 7222 through a horizontal shaft, the first pressing block 7224 is fixed at one end of the first pressing lever 7223 close to the second bearing bracket 711, the first pressing cylinder 7221 can drive the first pressing lever 7223 to rotate relative to the first auxiliary plate 7222, the insertion limiting mechanism 721 comprises an insertion cylinder 7211, an insertion block 7212 and a support member 7, the support member 7 is fixed above the second frame 71, the insertion cylinder 7211 is fixed above the support member 7, and a piston rod of the insertion cylinder 7211 is fixedly connected with the insertion block 7212. The end clamping mechanism 73 includes a second pressing cylinder 731, a second pressing lever 732, a clamping plate 733, a pulling cylinder 734 and a second auxiliary plate 735, the second auxiliary plate 735 is vertically fixed above the second frame 71 and is located at one end of the pipe body 11 far from the first auxiliary plate 7222, the second pressing lever 732 is hinged to the second auxiliary plate 735 through a horizontal shaft, the clamping plate 733 is located at one end of the second pressing lever 732 close to the second support bracket 711, the clamping plate 733 is connected to the second pressing lever 732 in a sliding manner along an extending direction of the second pressing lever 732, the pulling cylinder 734 is used for driving the clamping plate 733 to move relative to the second pressing lever 732, the second pressing cylinder 731 can drive the second pressing lever 732 to rotate relative to the second auxiliary plate 735, and as shown in fig. 6, a clamping groove 7331 is opened at one side of the clamping plate 733 facing the second support bracket 711.

The forming steps of the tube body 11 are as follows:

s11: placing the lower tube 113 above the second support bracket 711;

s12: starting the plugging cylinder 7211 to push the plugging block 7212 to be plugged into one end of the lower pipe body 113;

s13: the upper pipe body 112 is lapped over the lower pipe body 113, and one end of the upper pipe body 112 is lapped over the insertion block 7212;

s14: starting the first pressing cylinder 7221 to drive the first pressing lever 7223 to rotate relative to the first auxiliary plate 7222, and pressing one end of the upper pipe body 112 to the lower pipe body 113 by using the first pressing block 7224;

s15: the second pressing cylinder 731 is started, the second pressing cylinder 731 drives the second pressing lever 732 to rotate relative to the second auxiliary plate 735, so that the pipe wall of the upper pipe body 112 is inserted into the clamping groove 7331, the pulling cylinder 734 is started to contract, the clamping plate 733 is driven to move relative to the second pressing lever 732, and one end of the upper pipe body 112 is pressed and fixed on the lower pipe body 113;

s16: the upper pipe body 112 and the lower pipe body 113 are welded.

S2: the tubular body 11 is placed over the support bracket 21 and the tubular body 11 is clamped by the first clamping means 3 in cooperation with the support bracket 21. With reference to fig. 2, the specific operations are as follows: firstly, the tube 11 is placed above the support bracket 21, and then the first driving cylinder 311 and the second driving cylinder 321 are started to extend, the first driving cylinder 311 drives the first pressure plate 314 to compress the tube 11 by using the first lever 312, and the second driving cylinder 321 drives the second pressure plate 324 to compress the tube 11 by using the second lever 322.

Before fixing the tube 11, the upper tube 112 should be contacted with the support bracket 21, because the position of the first fixing member 12 and the tube 11 is specific, i.e. the reinforcing rib 122 is connected with the lower tube 113, the subsequent welding of the reinforcing rib 122 and the lower tube 113 is more convenient, and the fixing stability of the first fixing member 12 is also facilitated.

S3: the first fixing member 12, the second fixing member 13 and the third fixing member 14 are respectively clamped and fixed by using the first clamping device 3, the second clamping device 4 and the third clamping device 5.

As shown in fig. 2, the step of clamping the first fixing member 12 is: the first fixing member 12 is attached to the supporting plate 42, the third driving cylinder 44 is started to extend, and the third driving cylinder 44 drives the third lever 43 to rotate relative to the supporting plate 42 so as to drive the third pressure plate 45 to be close to the supporting plate 42 and clamp the first fixing member 12.

As shown in fig. 2, the step of clamping the second fixing member 13 is: firstly, the second fixing member 13 is overlapped above the second supporting portion 51, the fourth driving cylinder 55 is started to extend, and the fourth driving cylinder 55 drives the insertion rod 53 to move towards the second fixing member 13 through the fourth lever 52, so that the insertion rod 53 is inserted into the insertion hole 131.

As shown in fig. 2, the step of clamping the third fixing member 14 is: the third fixing member 14 is placed between the push plate 63 and the tube 11, and the fifth driving cylinder 62 is activated, so that the fifth driving cylinder 62 pushes the push plate 63 to approach the support bracket 21, thereby fixing the third fixing member 14 on the tube 11.

S4: the pipe body 11, the first fixing member 12, the second fixing member 13, and the third fixing member 14 are welded.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A welding tool for automobile parts is used for fixedly clamping the parts (1), the parts (1) comprise a pipe body (11), a first fixing piece (12), a second fixing piece (13) and a third fixing piece (14) and comprise a frame (2), a bearing bracket (21) is fixedly arranged above the frame (2), a first clamping device (3), a second clamping device (4), a third clamping device (5) and a fourth clamping device (6) are fixedly arranged on the frame (2), the first clamping device (3) comprises a first lever mechanism (31) and a second lever mechanism (32), the first lever mechanism (31) comprises a first driving cylinder (311), a first lever (312), a first support (313) and a first pressure plate (314), the first support (313) is fixed above the frame (2), the middle part of the first lever (312) is hinged with the first support (313) through a horizontal shaft, the first pressure plate (314) is fixed at one end of the first lever (312) close to the support bracket (21), and two ends of the first driving cylinder (311) are respectively hinged with one end of the first lever (312) far away from the first pressure plate (314) and the frame (2); the second lever mechanism (32) comprises a second driving cylinder (321), a second lever (322), a second support (323) and a second pressure plate (324), the second support (323) is fixed above the frame (2), the middle part of the second lever (322) is hinged with the second support (323) through a horizontal shaft, the second pressure plate (324) is fixed at one end of the second lever (322) close to the bearing bracket (21), two ends of the second driving cylinder (321) are respectively hinged with one end of the second lever (322) far away from the second pressure plate (324) and the frame (2), the first pressure plate (314) and the second pressure plate (324) are respectively positioned above two ends of the bearing bracket (21), the welding tool is characterized by further comprising a second welding tool (7), the second welding tool (7) comprises a second frame (71), a head end clamping mechanism (72) and a tail end clamping mechanism (73), a second support bracket (711) is fixedly arranged above the second frame (71); the head end clamping mechanism (72) comprises an inserting limiting mechanism (721) and a first pressing mechanism (722), the first pressing mechanism (722) comprises a first pressing air cylinder (7221), a first auxiliary plate (7222), a first pressing lever (7223) and a first pressing block (7224), the first auxiliary plate (7222) is vertically fixed above the second frame (71), the first pressing lever (7223) is hinged with the first auxiliary plate (7222) through a horizontal shaft, the first pressing block (7224) is fixed at one end, close to the second bearing bracket (711), of the first pressing lever (7223), the first pressing air cylinder (7221) can drive the first pressing lever (7223) to rotate relative to the first auxiliary plate (7222), the inserting limiting mechanism (721) comprises an inserting air cylinder (7211), an inserting block (7212) and a supporting piece (7213), the supporting piece (7213) is fixed above the second frame (71), and the inserting air cylinder (7211) is fixed above the supporting piece (7213), the piston rod of the plug-in cylinder (7211) is fixedly connected with the plug-in block (7212).

2. The automobile part welding tool according to claim 1, wherein the second clamping device (4) comprises a first supporting portion (41), a supporting plate (42), a third lever (43), a third driving cylinder (44) and a third pressing plate (45), the supporting plate (42) is fixed above the frame (2), the first supporting portion (41) is fixed on one side, close to the supporting bracket (21), of the supporting plate (42), one end of the third lever (43) is hinged to the upper portion of the supporting plate (42) through a horizontal shaft, two ends of the third driving cylinder (44) are hinged to one end, far away from the supporting bracket (21), of the third lever (43) and the supporting plate (42) respectively, and the third pressing plate (45) is fixed on one end, close to the supporting bracket (21), of the third lever (43).

3. The welding tool for the automobile parts as claimed in claim 2, wherein the first fixing member (12) comprises a disc (121), a reinforcing rib (122) and a connecting plate (123), a positioning hole (1211) is formed in the disc (121), a positioning rod (421) is fixedly arranged on the side surface of the supporting plate (42) close to one side of the supporting bracket (21), and the positioning rod (421) is in inserted fit with the positioning hole (1211).

4. The welding tool for the automobile parts as claimed in claim 1, wherein the third clamping device (5) comprises a second supporting portion (51), a fourth lever (52), an insertion rod (53), a fourth support (54) and a fourth driving cylinder (55), the second supporting portion (51) and the fourth support (54) are fixedly connected with the frame (2), the second supporting portion (51) is located between the support bracket (21) and the fourth support (54), the fourth lever (52) is hinged to the fourth support (54) through a horizontal shaft, the insertion rod (53) is fixed to one end, close to the support bracket (21), of the fourth lever (52), and two ends of the fourth driving cylinder (55) are hinged to one end, far away from the insertion rod (53), of the fourth lever (52) and the support bracket (21) respectively; the upper part of the second fixing piece (13) is provided with a jack (131), and the inserted bar (53) is in inserted fit with the jack (131).

5. The automobile part welding tool according to claim 1, wherein the fourth clamping device (6) comprises a fifth support (61), a fifth driving cylinder (62) and a push plate (63), the fifth support (61) is fixed above the frame (2), the fifth driving cylinder (62) is fixed on one side of the fifth support (61) far away from the support bracket (21), the push plate (63) is located on one side of the fifth support (61) close to the support bracket (21), and a telescopic rod of the fifth driving cylinder (62) is fixedly connected with the push plate (63).

6. The automobile part welding tool according to claim 5, wherein a placing hole (631) is formed in the push plate (63), a placing rod (141) is fixedly arranged on the third fixing member (14), and the placing rod (141) is in inserted fit with the placing hole (631).

7. The automobile part welding tool according to claim 1, wherein the support bracket (21) comprises a first support column (211) and a second support column (212) which are fixed above the frame (2), an insertion column is arranged above the first support column (211) in a protruding mode, an insertion block is arranged above the second support column (212) in a protruding mode, one end of the pipe body (11) is inserted into the insertion block, a limiting hole is formed in the lower portion of one end, far away from the insertion block, of the pipe body (11), and the insertion column is matched with the limiting hole in an inserting mode.