CN115446538A - Multi-station welding equipment - Google Patents

Abstract

The invention relates to the technical field of welding machines, in particular to multi-station welding equipment, which comprises a rack, wherein at least two welding stations are sequentially arranged on the rack along the moving direction of a workpiece, and a transplanting mechanism for conveying the workpiece is also arranged on the rack; the welding station comprises a clamping and positioning device and a welding device, the clamping and positioning device is used for clamping the workpiece transferred by the transplanting mechanism, and the welding device is used for welding the clamped workpiece. The welding station is simple in structure arrangement, and the workpiece is clamped by the clamping and positioning device and welded by the welding device; the troubles of moving, clamping and adjusting the workpiece for multiple times at the same welding station are saved.

Description

Multi-station welding equipment

technical field

The invention relates to the technical field of welding machines, in particular to multi-station welding equipment.

Background technique

When the existing welding equipment needs to weld multiple positions of the workpiece, generally one welding station is used to complete the welding of multiple positions, so the welding efficiency is very low, and the structure of the welding station is very responsible; and some For welding equipment with multiple welding stations, each station corresponds to one workpiece during processing, and the welding efficiency of a single workpiece is not high.

Contents of the invention

The purpose of the present invention is to provide multi-station welding equipment, aiming to solve the technical problem of low welding efficiency in the prior art.

In order to achieve the above object, the present invention proposes multi-station welding equipment, including a frame. Along the moving direction of the workpiece, the frame is provided with at least two welding stations in sequence, and the frame is also provided with a transplanting mechanism for transporting the workpiece. The welding station includes a clamping and positioning device and a welding device. The clamping and positioning device is used to clamp the workpiece transferred by the transplanting mechanism, and the welding device is used to weld the clamped workpiece.

Preferably, along the moving direction of the workpiece, a loading and unloading device is provided in front of the first welding station, and/or a loading and unloading device is provided behind the last welding station; the loading and unloading device includes a support frame, X-axis movement Mechanism, Z-axis moving mechanism and loading and unloading fixture; the support frame is erected on the frame, the X-axis moving mechanism is installed on the support frame, the Z-axis moving mechanism is installed on the X-axis moving mechanism, and can be used in the role of the X-axis moving mechanism The bottom moves along the moving direction of the workpiece, and the loading and unloading fixture is installed on the Z-axis moving mechanism, and can move in the vertical direction under the action of the Z-axis moving mechanism. By setting up the loading and unloading device, the automation of workpiece loading and unloading is realized, and the processing efficiency is improved; and the loading and unloading device is closely matched with the transplanting mechanism and welding station, so that each action can be carried out synchronously, which greatly improves the processing efficiency.

Preferably, the transplanting mechanism includes a transfer slide rail, a transfer assembly and a driving device, the transfer slide rail is installed on the frame, and the length direction is consistent with the moving direction of the workpiece, the transfer assembly is slidably arranged on the transfer slide rail, and the drive device Used to drive the transfer assembly to slide on the transfer slide. The transplanting mechanism is set in this way, so that the transfer component can better move according to the set path when conveying the workpiece, and prevent deviation.

Preferably, the transfer assembly includes a transfer plate, a lifting device, a lifting plate and a supporting positioning plate, the transfer plate is slidably arranged on the transfer slide rail, the lifting device is installed on the transfer plate, the lifting plate is connected with the output end of the lifting device, and supports The positioning plate is arranged on the lifting plate and is used for supporting and fixing the workpiece. The structure of the transfer assembly is arranged in this way, which can facilitate the transfer of the workpiece to the clamping and positioning device, and facilitate the clamping and positioning of the workpiece by the clamping and positioning device.

Preferably, a through hole is opened on the transfer plate, and a limit sleeve is installed on the through hole; a limit column is arranged on the lifting plate, and the limit column can be inserted into the limit sleeve so as to slide up and down. Setting the limit sleeve and the limit column can limit the radial offset of the lifting plate when it rises and falls, so as to ensure the stable rise of the lifting plate, the support positioning plate and the workpiece, and prevent the workpiece from shifting and falling.

Preferably, the transplanting mechanism includes a plurality of transfer assemblies, two adjacent transfer assemblies are connected by a connecting rod, and the distance between two adjacent transfer assemblies is equal to the distance between two adjacent welding stations. Multiple transfer components can move synchronously, and can be accurately transferred to the corresponding welding station. One movement can transport multiple workpieces, and one movement can complete the action of changing workpieces at all welding stations, so the production efficiency is higher and the synchronization is better. it is good.

Preferably, the welding station also includes a left welding station and a right welding station, the left welding station and the right welding station are installed on the frame and are respectively located on both sides of the transplanting mechanism; the left welding station and/or the right welding station A welding device is installed; the clamping and positioning device includes a left clamp assembly and a right clamp assembly, the left clamp assembly is slidably installed on the left welding table, the right clamp assembly is slidably installed on the right welding table, the left clamp assembly and the right clamp Components can move closer or farther apart to clamp or loosen the workpiece. It is convenient to clamp workpieces, and can flexibly adjust the number and position of welding devices to be suitable for processing different workpieces while maintaining processing efficiency; moreover, the left and right clamp components can be used as positioning references and clamping standards to make the workpiece The clamping position is more accurate, and the subsequent welding is more convenient and faster.

Preferably, the left fixture assembly includes a left slide rail, a left slide plate, a left cylinder and a left clamping member, the left slide rail and the left cylinder are installed on the left welding table, the left slide plate is slidably arranged on the left slide rail, and the left slide plate It is connected with the output end of the left cylinder, and the left clamping part is installed on the left slide plate. It is convenient and precise to clamp workpieces, and can better adapt to workpieces of different lengths.

Preferably, the left clamp assembly also includes a left elastic cylinder, and the left clamping part is a left elastic claw; the left elastic cylinder is installed on the left slide plate, and the left elastic claw is connected with the output end of the left elastic cylinder; when the output end of the left elastic cylinder is stretched , the left elastic claw is opened; when the output end of the left elastic cylinder shrinks, the left elastic claw is tightened. The left elastic cylinder and the left elastic claw are provided, so that the left elastic claw can extend into and fix the workpiece, which is especially suitable for workpieces with a tubular structure, and the clamping is more stable.

Preferably, the clamping and positioning device further includes a rotation driving assembly for driving the workpiece to rotate. A rotary drive assembly is provided to drive the workpiece to rotate, and the welding device can be fixed on the left welding table and the right welding table. The overall structure is relatively simple, and it is convenient to weld the tubular workpiece.

Preferably, the rotary drive assembly includes a motor, a driving wheel, a driven wheel and a transmission belt, the motor is installed on the left skateboard, the driving wheel is installed on the output end of the motor, the driven wheel is connected with the left clamping part, and the driving wheel and the driven wheel are driven by the transmission belt connect. The rotary drive assembly is combined with the left fixture assembly. The overall structure is relatively simple and reasonable. The clamping and positioning device can not only position and clamp the workpiece, but also drive the workpiece to rotate. The function is more powerful and the range of workpieces that can be processed is wider.

Preferably, the right fixture assembly includes a right slide rail, a right slide plate, a right cylinder and a right clamping member, the right slide rail and the right cylinder are installed on the right welding table, the right slide plate is slidably arranged on the right slide rail, and the right slide plate It is connected with the output end of the right cylinder, and the right clamping part is installed on the right sliding plate; the right clamping assembly also includes a right elastic cylinder, and the right clamping part is the right elastic claw; the right elastic cylinder is installed on the right sliding plate, and the right elastic claw and the right The output end of the elastic cylinder is connected; when the output end of the right elastic cylinder is stretched, the right elastic claw is opened; when the output end of the right elastic cylinder is contracted, the right elastic claw is tightened. It is convenient and precise to clamp workpieces, and can better adapt to workpieces of different lengths.

Preferably, the welding device includes a Y-axis rodless cylinder, a Z-axis rodless cylinder and a welding head, the Z-axis rodless cylinder is installed on the sliding seat of the Y-axis rodless cylinder, and the welding head is installed on the sliding seat of the Z-axis rodless cylinder superior. The position of the welding head in the Y-axis and Z-axis directions can be flexibly adjusted to facilitate welding of workpieces of different lengths and widths.

Preferably, the welding device also includes a facing conversion part, which includes a fixed plate, a connecting part and a swash plate, one end of the connecting part is connected with the fixed plate, and the other end is connected with the swash plate, and the sliding seat of the Z-axis rodless cylinder is connected with the fixed plate. Plate connection, the welding head is installed on the slant plate, and the slant plate extends obliquely from top to bottom to the side where the connection part is located. The setting of the orientation conversion part enables the welding head to adjust the orientation to meet the welding requirements of more complex workpieces, with higher practicability and wider application range.

The multi-station welding equipment of the present invention has at least the following beneficial effects: by setting at least two welding stations and using the transplanting mechanism to transport the workpiece, the welding work of one workpiece can be distributed to different welding stations, greatly improving Welding efficiency and workpiece circulation efficiency, and the structural setting of the welding station is relatively simple, just use the clamping and positioning device to clamp the workpiece and the welding device to weld the workpiece; on the other hand, because multiple welding stations weld the workpiece sequentially, And the structure of the welding station is relatively simple, so the utilization rate of the welding station will be higher, which saves the trouble of moving, clamping and adjusting the workpiece multiple times at the same welding station.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is the perspective view of multi-station welding equipment of the present invention;

Fig. 2 is the front view of multi-station welding equipment of the present invention;

Fig. 3 is the local structure schematic diagram of transplanting mechanism and loading and unloading device of the present invention on the frame;

Fig. 4 is the structural representation of loading and unloading device of the present invention;

Fig. 5 is a structural schematic diagram of another angle of the loading and unloading device of the present invention;

Fig. 6 is the structural representation of welding station of the present invention;

Fig. 7 is a schematic structural view of the left clamp assembly of the present invention;

Fig. 8 is a structural schematic diagram of another angle of the left clamp assembly of the present invention;

Fig. 9 is a schematic structural view of the right clamp assembly of the present invention;

Fig. 10 is the structural representation of welding device of the present invention;

Fig. 11 is a schematic structural view of another embodiment of the welding device of the present invention;

Fig. 12 is a schematic structural view of the transition member in another embodiment of the welding device of the present invention;

Fig. 13 is a schematic structural view of the transplanting mechanism of the present invention;

Fig. 14 is a schematic structural view of the transfer assembly of the present invention;

Fig. 15 is a schematic structural view of the workpiece processed by the embodiment of the present invention;

Fig. 16 is a schematic diagram of the exploded structure of the workpiece processed by the embodiment of the present invention.

In the drawings: 1-frame, 2-welding station,

21-Clamping and positioning device, 211-left fixture assembly, 2111-left slide rail, 2112-left slide plate, 2113-left cylinder, 2114-left clamping part, 2115-left slider, 2116-left elastic cylinder,

212-right fixture assembly, 2121-right slide rail, 2122-right slide plate, 2123-right cylinder, 2124-right clamping piece, 2125-right slider, 2126-right elastic cylinder,

213-rotary drive assembly, 2131-motor, 2132-driving wheel, 2133-driven wheel, 2134-transmission belt,

22-welding device, 221-Y-axis rodless cylinder, 222-Z-axis rodless cylinder, 223-welding head, 224-direction conversion piece, 2241-fixing plate, 2242-connecting part, 2243-tilting plate, 225-installation seat, 23-left welding station, 24-right welding station,

3-transplanting mechanism, 31-transfer slide rail, 32-transfer assembly, 321-transfer plate, 322-lifting device, 323-lift plate, 324-support positioning plate, 325-limit sleeve, 326-limit column , 33-drive device, 34-transfer slider, 35-connecting rod,

4-Unloading device, 41-support frame, 42-X-axis moving mechanism, 421-X-axis slide rail, 422-X-axis slider, 423-X-axis slide seat, 424-X-axis slide table cylinder, 43-Z Axis moving mechanism, 431-Z-axis sliding table cylinder, 432-Z-axis sliding seat, 44-Loading and unloading fixture, 441-Pneumatic gripper, 442-Left splint, 443-Right splint,

5-loading storage rack, 6-unloading storage rack, 10-workpiece, 101-inner tube, 102-outer tube, 103-outer disc, 104-inner disc.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

As shown in Figures 1 to 16, the multi-station welding equipment includes a frame 1. Along the moving direction of the workpiece 10, the frame 1 is provided with at least two welding stations 2 in sequence, and the frame 1 is also provided with a The transplanting mechanism 3 for transporting the workpiece 10; the welding station 2 includes a clamping and positioning device 21 and a welding device 22, the clamping and positioning device 21 is used for clamping the workpiece 10 transferred by the transplanting mechanism 3, and the welding device 22 is used for clamping The final workpiece 10 is then welded.

The multi-station welding equipment is used for welding the workpiece 10, such as welding and fixing two assembled parts together, and welding the same workpiece 10 sequentially through at least two welding stations 2 to complete the welding of the workpiece 10. All welding work. The moving direction of the workpiece 10 is the sequential direction of the processing of the workpiece 10. Along the moving direction of the workpiece 10, at least two welding stations 2 are sequentially arranged on the frame 1. The welding station 2 includes a clamping and positioning device 21 and a welding device. 22, wherein the clamping and positioning device 21 is used to clamp the workpiece 10, and the welding device 22 is used to weld the workpiece 10 clamped by the clamping and positioning device 21; the transplanting mechanism 3 is used to transport the workpiece 10, such as the workpiece 10 Transfer from the previous welding station 2 to the next welding station 2. When multiple positions of the same workpiece 10 need to be welded, different welding stations 2 can be responsible for welding different positions; it can also be that different welding stations 2 weld the same station in turn, such as the previous station welding One half is then moved to the next station to weld the other half. This technical solution sets at least two welding stations 2 and uses the transplanting mechanism 3 to transport the workpiece 10, so that the welding work of one workpiece 10 can be distributed to different welding stations 2, greatly improving the welding efficiency and the circulation of the workpiece 10 efficiency, and the structural setting of the welding station 2 is relatively simple, the workpiece 10 can be clamped by the clamping and positioning device 21, and the workpiece 10 can be welded by the welding device 22; processing, and the structure of the welding station 2 is relatively simple, so the utilization rate of the welding station 2 will be higher, which saves the trouble of moving, clamping and adjusting the workpiece 10 multiple times at the same welding station 2.

Taking the processing of the core tube I-shaped wheel as an example, as shown in Figure 15 and Figure 16, the core tube I-shaped wheel includes an inner tube 101, an outer tube 102 and two outer discs 103, the outer tube 102 is hollow inside, and both ends have radial The inner disc 104 extending in the direction, the inner tube 101 is placed inside the outer tube 102, and the two ends are aligned, and the outer disc 103 is sleeved on the ends of the inner disc 104 and the outer tube 102; the core tube is aligned by multi-station welding equipment When the wheel is welded, the connection between the two ends of the inner tube 101 and the two ends of the outer tube 102 needs to be welded, the connection between the outer disc 103 and the inner disc 104 needs to be welded, and the joint between the outer disc 103 and the outer tube 102 needs to be welded , where the welding path required for the connection between the outer disc 103 and the outer tube 102 is the longest. When multi-station welding equipment is used to weld the core tube I-shaped wheel, if the multi-station welding equipment is provided with two welding stations 2, then one of the welding stations 2 pairs the two ends of the inner tube 101 and the two ends of the outer tube 102. The joint is welded, and the joint between the outer disc 103 and the inner disc 104 is welded, and another welding station 2 is used for welding the joint between the outer disc 103 and the outer tube 102 . When the multi-station welding equipment is provided with three stations, and when the three welding stations 2 all participate in the welding work, it may be that the first welding station 2 welds the joints between the two ends of the inner pipe 101 and the two ends of the outer pipe 102, The second welding station 2 welds the connection between the outer disk 103 and the inner disk 104, and the third welding station 2 welds the connection between the outer disk 103 and the outer tube 102; it can also be that the first welding station 2 welds the inner tube 101 Weld the joints between the two ends and the two ends of the outer tube 102, and weld the joint between the outer disc 103 and the inner disc 104, the second welding station 2 welds half of the joint between the outer disc 103 and the outer tube 102, and the third welding station 2 Weld the remaining half of the connection between the outer disc 103 and the outer tube 102. When the multi-station welding equipment is provided with four stations, and the four welding stations 2 all participate in the welding work, it may be the first welding station 2 that welds the joints between the two ends of the inner tube 101 and the two ends of the outer tube 102 , the second welding station 2 welds the joint between the outer disc 103 and the inner disc 104, the third welding station 2 welds half of the joint between the outer disc 103 and the outer tube 102, and the fourth welding station 2 welds the outer disc 103 and the outer tube Solder the remaining half at the 102 junction. When there are more welding stations 2, on the premise of ensuring the processing efficiency, the arrangement of the welding stations 2 can be flexibly set according to the specific situation; of course, even if the multi-station welding equipment is equipped with multiple welding equipment, it does not mean All the welding stations 2 are involved in the welding stations 2. For example, some workpieces 10 can be efficiently welded by using only one welding station 2 or two welding stations 2. It should be noted that the multi-station welding equipment can be used not only for processing core tube I-shaped wheels, but also for processing other workpieces 10 .

Further, as shown in Figures 1 and 2, along the moving direction of the workpiece 10, a loading and unloading device 4 is provided in front of the first welding station 2, and/or, an upper and lower loading device 4 is provided behind the last welding station 2. The feeding device 4; the loading and unloading device 4 includes a support frame 41, an X-axis moving mechanism 42, a Z-axis moving mechanism 43 and a loading and unloading clamp 44; the supporting frame 41 is erected on the frame 1, and the X-axis moving mechanism 42 is installed on the support frame 41 Above, the Z-axis moving mechanism 43 is installed on the X-axis moving mechanism 42, and can move along the moving direction of the workpiece 10 under the action of the X-axis moving mechanism 42, and the loading and unloading fixture 44 is installed on the Z-axis moving mechanism 43, and can move It moves in the vertical direction under the action of the Z-axis moving mechanism 43 .

The loading and unloading device 4 is used to load the workpiece 10 to be processed (specifically refers to the welding of the workpiece 10 by the multi-station welding equipment, the same below) to the multi-station welding equipment, or to weld the processed workpiece 10 from the multi-station Equipment loading and unloading to the next process. More preferably, a loading and unloading device 4 and a loading storage rack 5 are provided in front of the first welding station 2, and a loading and unloading device 4 and a blanking storage rack are also provided behind the last welding station 2. 6; the loading storage rack 5 is used to store the workpiece 10 to be processed, and the unloading storage rack 6 is used to store the processed workpiece 10; the front loading and unloading device 4 is used to store the workpiece on the loading storage rack 5 10 is loaded onto the transplanting mechanism 3, and the loading and unloading device 4 at the back is then used for blanking the processed workpiece 10 on the transplanting mechanism 3 onto the blanking storage rack 6. By setting the loading and unloading device 4, the automation of loading and unloading of the workpiece 10 is realized, and the processing efficiency is improved; and the loading and unloading device 4 closely cooperates with the transplanting mechanism 3 and the welding station 2, so that each action can be carried out synchronously, which greatly improves the processing efficiency. Improved processing efficiency.

Specifically, as shown in Figures 4 and 5, the loading and unloading device 4 includes a support frame 41, an X-axis moving mechanism 42, a Z-axis moving mechanism 43, and a loading and unloading clamp 44, and the loading and unloading device 4 is arranged on the frame 1, and Set up on both sides of the transplanting mechanism 3; the X-axis moving mechanism 42 is installed on the support frame 41, and it is used to drive the Z-axis moving mechanism 43 and the loading and unloading fixture 44 to move in the X-axis direction (ie, the moving direction of the workpiece 10) The Z-axis moving mechanism 43 is installed on the X-axis moving mechanism 42, and it is used to drive the loading and unloading fixture 44 to move in the Z-axis direction (i.e. the vertical direction); the loading and unloading fixture 44 is installed on the Z-axis moving mechanism 43, For clamping or loosening the workpiece 10. The process of loading the workpiece 10 to the transplanting mechanism 3 is as follows: the X-axis moving mechanism 42 runs to drive the Z-axis moving mechanism 43 and the loading and unloading fixture 44 to move directly above the loading storage rack 5; then the Z-axis moving mechanism 43 runs , drive the loading and unloading fixture 44 down to the workpiece 10, and then the loading and unloading fixture 44 clamps the workpiece 10; the Z-axis moving mechanism 43 runs again, driving the loading and unloading fixture 44 and the workpiece 10 to rise; the X-axis moving mechanism 42 runs again, and the up and down The material fixture 44 and the workpiece 10 are transported directly above the transplanting mechanism 3; the Z-axis moving mechanism 43 runs to drive the upper and lower material fixture 44 and the workpiece 10 to descend, and when the workpiece 10 is placed on the transplanting mechanism 3, the upper and lower material fixture 44 loosens The workpiece 10 is opened, and then the Z-axis moving mechanism 43 drives the loading and unloading fixture 44 to rise, and the loading of the workpiece 10 is finally completed.

Specifically, as shown in Figure 5, the X-axis moving mechanism 42 includes an X-axis slide rail 421, an X-axis slide block 422, an X-axis slide seat 423 and an X-axis slide table cylinder 424, and the X-axis slide rail 421 is installed on the support frame 41 and the length direction is consistent with the moving direction of the workpiece 10, the X-axis slide block 422 is slidably arranged on the X-axis slide rail 421, the X-axis slide seat 423 is connected with the X-axis slide block 422, and the Z-axis moving mechanism 43 is installed on On the X-axis sliding seat 423 , the X-axis sliding table cylinder 424 is installed on the support frame 41 , and the output end is connected with the X-axis sliding seat 423 . The X-axis slide seat 423 is driven to slide on the X-axis slide rail 421 by the X-axis slide table cylinder 424 . As shown in Figure 4, the Z-axis moving mechanism 43 includes a Z-axis slide cylinder 431 and a Z-axis slide 432, the Z-axis slide cylinder 431 is installed on the X-axis slide 423, and the Z-axis slide 432 and the Z-axis slide The output end of the cylinder 431 is connected, and the welding head 223 is installed on the Z-axis sliding seat 432 . The loading and unloading fixture 44 includes a pneumatic clamping jaw 441, a left clamping plate 442 and a right clamping plate 443. The pneumatic clamping jaw 441 is an actuator that uses compressed air as power to clamp or grab the workpiece 10. The pneumatic clamping jaw 441 has two opposite A left clamping plate 442 and a right clamping plate 443 are respectively installed on the two clamping fingers, and the pneumatic jaw 441 can drive the left clamping plate 442 and the right clamping plate 443 to approach or move away from each other to clamp or loosen the workpiece 10 during operation. The left clamping plate 442 and the right frame plate can be set to clamp the workpiece 10 more stably, and the left clamping plate 442 and the right clamping plate 443 can be designed to match the shape of the workpiece 10 (as the workpiece 10 clamping place is arc, then the left clamping plate 442 and the right clamping plate 443 can be provided with an arc-shaped position) to facilitate the clamping of the workpiece 10.

Further, as shown in FIGS. 3 and 13 , the transplanting mechanism 3 includes a transfer slide rail 31 , a transfer assembly 32 and a driving device 33 . Consistently, the transfer assembly 32 is slidably arranged on the transfer slide rail 31 , and the driving device 33 is used to drive the transfer assembly 32 to slide on the transfer slide rail 31 .

On the frame 1, two parallel transfer slide rails 31 are installed, and the length direction is consistent with the moving direction of the workpiece 10; On the component 32, the transfer component 32 can also slide on the transfer slide rail 31; the drive device 33 is also installed on the frame 1, and the drive device 33 can be a driving mechanism such as an air cylinder or an oil cylinder, which is used to drive the transfer component 32 in the Move on the transfer slide rail 31. The transplanting mechanism 3 is set in this way, so that the transfer assembly 32 can better move according to the set path when transporting the workpiece 10 to prevent deviation.

Further, as shown in Figure 14, the transfer assembly 32 includes a transfer plate 321, a lifting device 322, a lifting plate 323 and a supporting positioning plate 324, the transfer plate 321 is slidably arranged on the transfer slide rail 31, and the lifting device 322 is installed on the transfer rail 31. On the plate 321 , the lifting plate 323 is connected to the output end of the lifting device 322 , and the supporting positioning plate 324 is arranged on the lifting plate 323 for supporting and fixing the workpiece 10 .

The transfer plate 321 is erected on the two transfer slide rails 31 at the same time, that is, at least two transfer slide blocks 34 are installed on the transfer plate 321, and each transfer slide rail 31 corresponds to at least one transfer slide block 34; On the plate 321, it is specifically installed on the lower end surface of the transfer plate 321, and the transfer plate 321 is provided with a hole, the output end of the lifting device 322 passes through the hole and faces upward, and the lifting device 322 is used to drive the lifting plate 323 to rise or Descend, specifically can adopt air cylinder as lifting device 322; Used to support and fix the workpiece 10 , its shape is adapted to the workpiece 10 , when the workpiece 10 is placed on the supporting positioning plate 324 , the supporting positioning plate 324 can support the workpiece 10 and limit the sliding of the workpiece 10 . When the lifting device 322 is arranged on the lower end surface of the transfer plate 321, because the lifting device 322 has a certain volume, the frame 1 is sunken downward between the two transfer slide rails 31 to facilitate the accommodation of the lifting device 322 and avoid the lifting device 322. Interfering with Rack 1. When the transfer assembly 32 moves to the below of the clamping and positioning device 21, the output end of the lifting device 322 is stretched, driving the lifting plate 323, the supporting positioning plate 324 and the workpiece 10 to rise. When rising to a certain height, the output end of the lifting device 322 Stopping and maintaining this state, the clamping and positioning device 21 clamps the workpiece 10 , and then the output end of the lifting device 322 shrinks, so as to load the workpiece 10 into the clamping and positioning device 21 . The structure of the transfer assembly 32 is arranged in this way, which can facilitate the transfer of the workpiece 10 to the clamping and positioning device 21, and can facilitate the clamping and positioning device 21 to clamp the workpiece 10; When the welding operation is carried out on the position 2, the transfer assembly 32 can slide on the transfer slide rail 31 to return to the initial position, which is convenient for the transfer assembly 32 to load the workpiece 10 next time, so the processing efficiency is higher.

Further, as shown in Figure 14, a through hole is provided on the transfer plate 321, and a limit sleeve 325 is installed on the through hole; a limit column 326 is arranged on the lifting plate 323, and the limit column 326 can be inserted into the limit by sliding up and down. Inside the bit sleeve 325.

The transfer plate 321 is provided with four through holes, and a limit sleeve 325 is installed on each through hole. The limit sleeve 325 is a cylindrical structure with a hollow interior and openings at the upper and lower ends; There are four limiting columns 326 extending downward, and the four limiting columns 326 are respectively located near the four corners of the lifting plate 323, and one limiting column 326 is facing a through hole, and the limiting columns 326 can be inserted into Set in the limit sleeve 325. Setting the limit sleeve 325 and the limit post 326 can limit the radial offset of the lifting plate 323 when it rises and falls, so as to ensure that the lifting plate 323, the support positioning plate 324 and the workpiece 10 rise steadily, and prevent the workpiece 10 from shifting and falling. fall.

Further, as shown in FIG. 13 , the transplanting mechanism 3 includes a plurality of transfer assemblies 32 , two adjacent transfer assemblies 32 are connected by connecting rods 35 , and the distance between two adjacent transfer assemblies 32 is equal to that of two adjacent transfer assemblies 32 . The distance between two welding stations.

A plurality of transfer assemblies 32 are slidably arranged on the transfer slide rail 31, the quantity of the transfer assemblies 32 is consistent with the quantity of the welding station 2, and two adjacent transfer assemblies 32 are connected by a connecting rod 35, so all the transfer assemblies 32 are in When sliding on the transfer slide rail 31, it is transferred synchronously. The distance between two adjacent transfer assemblies 32 is equal to the distance between two adjacent welding stations 2, that is, when the first transfer assembly 32 is located at the first welding station 2, the second transfer assembly 32 is located at the first welding station 2. The second welding station 2, the third transfer assembly 32 is located at the third welding station 2, and so on; so set, so that multiple transfer assemblies 32 can move synchronously, and can be accurately transferred to the corresponding welding station 2 , a plurality of workpieces 10 can be transported in one movement, and the action of replacing the workpieces 10 by all welding stations 2 can be completed in one movement, so the production efficiency is higher and the synchronization is better.

In other embodiments, the connecting rod 35 can be omitted, so that each transfer assembly 32 can move independently. Through separate control, not only can a plurality of transfer assemblies 32 move synchronously, but also transfer them independently according to the actions of different welding stations 2. Workpiece 10, higher flexibility.

In other embodiments, when the loading and unloading device 4 is arranged in front of the first welding station 2 and the loading and unloading device 4 is arranged behind the last welding station 2, the number of transfer assemblies 32 is equal to the total number of welding stations 2 Add 2, that is, each loading and unloading device 4 corresponds to a transfer assembly 32 .

Further, as shown in Figure 6, the welding station 2 also includes a left welding station 23 and a right welding station 24, the left welding station 23 and the right welding station 24 are all installed on the frame 1, and are respectively located at the ends of the transplanting mechanism 3. Both sides; the left welding station 23 and/or the right welding station 24 is equipped with a welding device 22; the clamping and positioning device 21 includes a left clamp assembly 211 and a right clamp assembly 212, and the left clamp assembly 211 is slidably installed on the left welding station 23 Above, the right clamping assembly 212 is slidably mounted on the right welding table 24 , and the left clamping assembly 211 and the right clamping assembly 212 can approach or move away from each other to clamp or loosen the workpiece 10 .

The frame 1 is respectively provided with a left welding station 23 and a right welding station 24 on both sides of the transfer slide rail 31, and the transfer assembly 32 moves to the position corresponding to the welding station 2, which is between the left welding station 23 and the right welding station 24 Be installed on the left clamp assembly 211 on the left welding platform 23, and the left clamp assembly 211 can slide on the left welding platform 23, on the right welding platform 24, the right clamp assembly 212 is installed, and the right clamp assembly 212 can be welded on the right Slide on the table 24; when the clamping and positioning device 21 needs to clamp the workpiece 10, the workpiece 10 rises to the level of the left clamp assembly 211 and the right clamp assembly 212 under the action of the transfer assembly 32, and then the left clamp assembly 211 and the right clamp assembly 212 approach each other to clamp the workpiece 10; when the clamping and positioning device 21 needs to loosen the workpiece 10, the support positioning plate 324 rises and drags the workpiece 10, and the left clamp assembly 211 and the right clamp assembly 212 move away from each other to loosen the workpiece 10, The transfer assembly 32 descends. A welding device 22 is provided on the left welding station 23 , or a welding device 22 is provided on the right welding station 24 , or both the left welding station 23 and the right welding station 24 are provided with the welding device 22 at the same time. In the present embodiment, the multi-station welding equipment is used for welding the core tube I-shaped wheel, and the two ends of the workpiece 10 all need to be welded, so welding devices 22 are all provided on the left welding station 23 and the right welding station 24, which can The simultaneous welding of both ends of the workpiece 10 is realized. Of course, in other embodiments, the number and positions of the welding devices 22 can be adaptively adjusted according to the actual processed workpiece 10 . Both the left clamp assembly 211 and the right clamp assembly 212 can be slidably arranged. Therefore, during the process of clamping the workpiece 10 and welding the workpiece 10, one of them can be used as a positioning reference, and the other can be used as a reference for clamping the workpiece 10, that is, in the clamping When the workpieces 10 are of different lengths, one of the left clamp assembly 211 and the right clamp assembly 212 can be used as a positioning reference, and the other is responsible for moving to the position of the clamping workpiece 10; of course, according to the different lengths of the workpiece 10, the positioning reference can also be adjusted, To facilitate the workpiece 10 to be welded after being clamped. The welding station 2 is set in this way, which can facilitate the clamping of the workpiece 10, and can flexibly adjust the number and position of the welding device 22 to be suitable for processing different workpieces 10 while maintaining the processing efficiency; and the left clamp assembly 211 and the right clamp The component 212 can be used as a positioning reference and a clamping standard, so that the clamping position of the workpiece 10 is more accurate, and the subsequent welding is more convenient and fast.

Further, as shown in Figures 7 and 8, the left fixture assembly 211 includes a left slide rail 2111, a left slide plate 2112, a left cylinder 2113 and a left clamping member 2114, and the left slide rail 2111 and the left cylinder 2113 are installed on the left welding table 23, the left slide plate 2112 is slidably arranged on the left slide rail 2111, the left slide plate 2112 is connected with the output end of the left cylinder 2113, and the left clamping part 2114 is installed on the left slide plate 2112.

The left slide rail 2111 is installed on the left welding table 23, and the length direction is close to or away from the direction of the right welding table 24; Left slide block 2115 is arranged, left slide block 2115 is slidably installed on the left slide rail 2111; The output shaft of the output shaft is connected with the left slide plate 2112, and the left clamping part 2114 is installed on the left slide plate 2112; The block 2115 moves synchronously and approaches the right welding station 24 side. The structure of the left fixture assembly 211 is set in this way, which can facilitate and accurately clamp the workpiece 10 and can better adapt to workpieces 10 of different lengths.

Further, as shown in Figures 7 and 8, the left clamp assembly 211 also includes a left elastic cylinder 2116, and the left clamping part 2114 is a left elastic claw; the left elastic cylinder 2116 is installed on the left slide plate 2112, and the left elastic claw is connected with the left elastic The output end of the cylinder 2116 is connected; when the output end of the left elastic cylinder 2116 is stretched, the left elastic claw is opened; when the output end of the left elastic cylinder 2116 is contracted, the left elastic claw is tightened.

The specific shape and structure of the left clamping part 2114 can be adaptively set according to the workpiece 10 to be clamped, and in this embodiment, the left clamping part 2114 is a left elastic claw that can be expanded or contracted to change its width. The left elastic cylinder 2116 is installed on the left slide plate 2112, the left elastic claw is connected with the output end of the left elastic cylinder 2116, and the extension direction of the output end of the left elastic cylinder 2116 is consistent with the moving direction of the left slide plate 2112, and the left elastic cylinder 2116 is used for Control the opening or tightening of the left elastic claw. In this embodiment, when the workpiece 10 is clamped, the output end of the left cylinder 2113 is stretched, driving the left elastic claw to extend into the inner tube 101, and then the output end of the left elastic cylinder 2116 is stretched, and the left elastic claw is opened and pressed against the inner tube 101. The inner wall of the pipe 101 fixes the workpiece 10 with this; The left elastic cylinder 2116 and the left elastic claw are provided, so that the left elastic claw can extend into and fix the workpiece 10, which is especially suitable for the workpiece 10 with a tubular structure, and the clamping is more stable.

Further, as shown in FIG. 7 , the clamping and positioning device 21 further includes a rotation driving assembly 213 for driving the workpiece 10 to rotate.

The rotating drive workpiece 10 is used to drive the workpiece 10 to rotate around its central axis when the workpiece 10 is clamped and the welding device 22 welds the workpiece 10 . When the workpiece 10 is welded, it usually does not only weld one of the positions, but sometimes it is necessary to weld the workpiece 10 around, such as the core tube I-shaped wheel provided in this embodiment; and the existing welding mechanism is usually that the workpiece 10 is fixed and welded. The head 223 rotates. If the welding device 22 is rotated in this technical solution, the overall structure becomes very complicated and the processing is inconvenient. Therefore, this embodiment is provided with a rotary drive assembly 213 to drive the workpiece 10 to rotate, and the welding device 22 is fixed on the left welding table 23 and the right welding table 24. The overall structure is relatively simple, and the tubular workpiece 10 can be welded conveniently.

Further, as shown in Figures 7 and 8, the rotary drive assembly 213 includes a motor 2131, a driving wheel 2132, a driven wheel 2133 and a transmission belt 2134, the motor 2131 is installed on the left skateboard 2112, and the driving wheel 2132 is installed at the output end of the motor 2131 , the driven wheel 2133 is connected with the left clamping part 2114, and the driving wheel 2132 and the driven wheel 2133 are connected by transmission belt 2134.

Specifically, the rotation driving assembly 213 is combinedly arranged in the left clamp assembly 211 , and when the left sliding plate 2112 moves, the rotation driving assembly 213 moves synchronously. The rotation of the motor 2131 can drive the driving wheel 2132 to rotate, the driving wheel 2132 can drive the driven wheel 2133 to rotate through the transmission belt 2134, and the left clamping part 2114 rotates synchronously with the driven wheel 2133, and the left clamping part 2114 keeps the state of clamping the workpiece 10, so The workpiece 10 rotates thereupon. When the welding device 22 is welding the workpiece 10, the welding of the workpiece 10 can be realized by controlling the motor 2131 to start. The rotary drive assembly 213 is combined with the left fixture assembly 211, and the overall structure is relatively simple and reasonable. The clamping and positioning device 21 can not only position and clamp the workpiece 10, but also drive the workpiece 10 to rotate. The function is more powerful and can be processed. The workpiece 10 is wider in scope.

Further, as shown in FIG. 9, the right clamp assembly 212 includes a right slide rail 2121, a right slide plate 2122, a right cylinder 2123 and a right clamping member 2124, and the right slide rail 2121 and the right cylinder 2123 are installed on the right welding table 24, Right slide plate 2122 is slidably arranged on the right slide rail 2121, and right slide plate 2122 is connected with the output end of right cylinder 2123, and right clamping part 2124 is installed on the right slide plate 2122; Clamping part 2124 is right elastic claw; Right elastic cylinder 2126 is installed on the right slide plate 2122, and right elastic claw is connected with the output end of right elastic cylinder 2126; When the output end of right elastic cylinder 2126 stretches, right elastic claw opens; When the output end of the elastic cylinder 2126 shrinks, the right elastic claw is tightened.

The right slide rail 2121 is installed on the right welding table 24, and the length direction is close to or away from the direction of the right welding table 24; Right slide block 2125 is arranged, and right slide block 2125 is slidably installed on the right slide rail 2121; The output shaft of the output shaft is connected with the right slide plate 2122, and the right clamping part 2124 is installed on the right slide plate 2122; The block 2125 moves synchronously and approaches the left welding table 23 side. The structure of the right clamp assembly 212 is set in this way, which can facilitate and accurately clamp the workpiece 10 and can better adapt to workpieces 10 of different lengths.

The specific shape and structure of the right clamping part 2124 can be adaptively set according to the workpiece 10 to be clamped, and in this embodiment, the right clamping part 2124 is a right elastic claw that can be expanded or contracted to change its width. The structure of the elastic claw is the same as that of the left elastic claw. The right elastic cylinder 2126 is installed on the right slide plate 2122, the right elastic claw is connected with the output end of the right elastic cylinder 2126, and the extension direction of the output end of the right elastic cylinder 2126 is consistent with the moving direction of the right slide plate 2122, and the right elastic cylinder 2126 is used for Control the right elastic claw to open or tighten. In this embodiment, when the workpiece 10 is clamped, the output end of the right cylinder 2123 is stretched, driving the right elastic claw to extend into the inner tube 101, and then the output end of the right elastic cylinder 2126 is stretched, and the right elastic claw is opened and pressed against the inner tube 101. The inner wall of the pipe 101 fixes the workpiece 10 in this way; when the workpiece 10 needs to be loosened, the output end of the right elastic cylinder 2126 shrinks to tighten the right elastic claw, and then the output end of the right cylinder 2123 shrinks to make the right elastic claw break away from the workpiece 10; It should be noted that during the process of clamping or unclamping the workpiece 10, the left clamp assembly 211 and the right clamp assembly 212 act synchronously. The right elastic cylinder 2126 and the right elastic claw are provided, so that the right elastic claw can extend into and fix the workpiece 10, which is especially suitable for the workpiece 10 with a tubular structure, and the clamping is more stable.

Further, as shown in FIG. 10, the welding device 22 includes a Y-axis rodless cylinder 221, a Z-axis rodless cylinder 222 and a welding head 223. The Z-axis rodless cylinder 222 is installed on the sliding seat of the Y-axis rodless cylinder 221. The welding head 223 is installed on the sliding seat of the Z-axis rodless cylinder 222 .

Take the welding device 22 installed on the left welding table 23 as an example, the Y-axis rodless cylinder 221 is installed on the left welding table 23, and the sliding direction of its sliding seat is the direction approaching or away from the workpiece 10, the Y-axis rodless cylinder 221 It is used to drive the welding head 223 to move in the Y-axis direction; the mounting seat 225 is installed on the sliding seat of the Y-axis rodless cylinder 221, the Z-axis rodless cylinder 222 is installed on the mounting seat 225, and the Z-axis rodless cylinder 222 is used To drive the welding table to move in the Z-axis direction (that is, the vertical direction); the welding head 223 is installed on the sliding seat of the Z-axis rodless cylinder 222 for welding the workpiece 10 . The welding device 22 is arranged in such a way that the position of the welding head 223 in the Y-axis and Z-axis directions can be flexibly adjusted, which is convenient for welding the workpieces 10 of different lengths and widths.

Further, as shown in FIG. 11 , the welding device 22 also includes a transition piece 224 towards which the transition piece 224 includes a fixed plate 2241, a connecting portion 2242 and a slanting plate 2243. One end of the connecting portion 2242 is connected to the fixed plate 2241, and the other end is connected to the The swash plate 2243 is connected, the sliding seat of the Z-axis rodless cylinder 222 is connected to the fixed plate 2241, the welding head 223 is installed on the swash plate 2243, and the swash plate 2243 extends obliquely from top to bottom to the side where the connecting part 2242 is located.

The orientation conversion member 224 is used to adjust the orientation of the welding head 223 so that the welding head 223 can face to the desired welding position of the workpiece 10 . It should be noted that not every welding device 22 on each welding station 2 includes a facing transition 224; when two welding stations 2 are provided, only one of the welding stations 2 has a welding device 22 including a facing transition Part 224 (as shown in Figure 11), as the welding head 223 on the first welding station 2 is directly fixed on the sliding seat of the Z-axis rodless cylinder 222, and the welding head 223 on the second welding station 2 Then it is installed on the sliding seat of the Z-axis rodless cylinder 222 by facing the conversion part 224 (as shown in FIG. 10 ). The connecting part 2242 is a cylindrical structure, one end of which is flat, and the end surface of one end is inclined relative to the horizontal plane. The flat end is connected to the fixed plate 2241, and the fixed plate 2241 is connected to the sliding seat of the Z-axis rodless cylinder 222. The inclined One end is connected to the inclined plate 2243, and the inclined plate 2243 and the fixed plate 2241 have the same disc-shaped structure. Since the inclined plate 2243 is connected to the inclined end of the connecting part 2242, the inclined plate 2243 presents a direction from top to bottom to the side where the connecting part 2242 is located. The state of extending obliquely; of course, in other embodiments, both ends of the connecting portion 2242 may be flush, and the swash plate 2243 itself is in an inclined state. In this embodiment, the welding station 2 corresponding to the welding device 22 (as shown in FIG. 11 ) that includes the transition piece 224 is used to weld the joint between the outer tube 102 and the outer disc 103; because the outer tube 102 and the outer disc 103 The junction of the tube is located inside the outer plate 103, and the welding device 22 is located outside the outer plate 103, so the welding head 223 needs to extend to the inner side of the outer plate 103, and is slightly inclined from top to bottom towards the joint of the outer tube 102 and the outer plate 103. The setting of the orientation conversion part 224 enables the orientation of the welding head 223 to be adjusted to meet the welding requirements of more complicated workpieces 10 , with higher practicability and wider application range.

The above is only a preferred embodiment of the present invention, and does not therefore limit the patent scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or direct/indirect use All other relevant technical fields are included in the patent protection scope of the present invention.

Claims (14)

1. The multi-station welding equipment is characterized by comprising a rack (1), wherein at least two welding stations (2) are sequentially arranged on the rack (1) along the moving direction of a workpiece (10), and a transplanting mechanism (3) for transporting the workpiece (10) is further arranged on the rack (1); the welding station (2) comprises a clamping and positioning device (21) and a welding device (22), the clamping and positioning device (21) is used for clamping the workpiece (10) transferred by the transplanting mechanism (3), and the welding device (22) is used for welding the clamped workpiece (10).

2. A multi-station welding apparatus according to claim 1, characterized in that, in the moving direction of the workpieces (10), a loading and unloading device (4) is arranged in front of the first welding station (2) and/or a loading and unloading device (4) is arranged behind the last welding station (2);

the feeding and discharging device (4) comprises a support frame (41), an X-axis moving mechanism (42), a Z-axis moving mechanism (43) and a feeding and discharging clamp (44); the supporting frame (41) is erected on the rack (1), the X-axis moving mechanism (42) is installed on the supporting frame (41), the Z-axis moving mechanism (43) is installed on the X-axis moving mechanism (42) and can move along the moving direction of the workpiece (10) under the action of the X-axis moving mechanism (42), and the feeding and discharging clamp (44) is installed on the Z-axis moving mechanism (43) and can move in the vertical direction under the action of the Z-axis moving mechanism (43).

3. The multi-station welding equipment according to claim 1, characterized in that the transplanting mechanism (3) comprises a transfer slide rail (31), a transfer assembly (32) and a driving device (33), the transfer slide rail (31) is installed on the frame (1) and has a length direction consistent with the moving direction of the workpiece (10), the transfer assembly (32) is slidably arranged on the transfer slide rail (31), and the driving device (33) is used for driving the transfer assembly (32) to slide on the transfer slide rail (31).

4. The multi-station welding equipment according to claim 3, characterized in that the transfer assembly (32) comprises a transfer plate (321), a lifting device (322), a lifting plate (323) and a supporting and positioning plate (324), the transfer plate (321) is slidably arranged on the transfer slide rail (31), the lifting device (322) is installed on the transfer plate (321), the lifting plate (323) is connected with an output end of the lifting device (322), and the supporting and positioning plate (324) is arranged on the lifting plate (323) and used for supporting and fixing the workpiece (10).

5. The multi-station welding equipment according to claim 4, characterized in that the transfer plate (321) is provided with a through hole, and a limiting sleeve (325) is arranged on the through hole; the lifting plate (323) is provided with a limiting column (326), and the limiting column (326) can be inserted into the limiting sleeve (325) in a vertically sliding mode.

6. The multi-station welding apparatus according to claim 3, characterized in that said transfer mechanism (3) comprises a plurality of said transfer assemblies (32), two adjacent transfer assemblies (32) are connected by a connecting rod (35), and the distance between two adjacent transfer assemblies (32) is equal to the distance between two adjacent welding stations (2).

7. The multi-station welding apparatus according to claim 1, characterized in that said welding station (2) further comprises a left welding station (23) and a right welding station (24), said left welding station (23) and said right welding station (24) being mounted on said frame (1) and located on either side of said transplanting mechanism (3); the welding device (22) is arranged on the left welding table (23) and/or the right welding table (24); the clamping and positioning device (21) comprises a left clamp assembly (211) and a right clamp assembly (212), the left clamp assembly (211) is slidably mounted on the left welding table (23), the right clamp assembly (212) is slidably mounted on the right welding table (24), and the left clamp assembly (211) and the right clamp assembly (212) can be close to or far away from each other to clamp or loosen the workpiece (10).

8. The multi-station welding apparatus according to claim 7, wherein said left clamp assembly (211) comprises a left slide rail (2111), a left slide plate (2112), a left cylinder (2113) and a left clamp (2114), said left slide rail (2111) and said left cylinder (2113) are both mounted on said left welding station (23), said left slide plate (2112) is slidably disposed on said left slide rail (2111), said left slide plate (2112) is connected to an output end of said left cylinder (2113), and said left clamp (2114) is mounted on said left slide plate (2112).

9. The multi-station welding apparatus according to claim 8, wherein said left clamp assembly (211) further comprises a left tensioning cylinder (2116), said left clamp (2114) being a left tensioning claw; the left elastic cylinder (2116) is arranged on the left sliding plate (2112), and the left elastic claw is connected with the output end of the left elastic cylinder (2116); when the output end of the left tightening cylinder (2116) extends, the left tightening claw opens; when the output end of the left elastic cylinder (2116) contracts, the left elastic claw is tightened.

10. The multi-station welding apparatus according to claim 8, characterized in that said clamping and positioning device (21) further comprises a rotary drive assembly (213) for driving the workpiece (10) in rotation.

11. The multi-station welding apparatus according to claim 10, wherein the rotary drive assembly (213) comprises a motor (2131), a driving wheel (2132), a driven wheel (2133) and a transmission belt (2134), the motor (2131) is mounted on the left slide plate (2112), the driving wheel (2132) is mounted at an output end of the motor (2131), the driven wheel (2133) is connected with the left clamp member (2114), and the driving wheel (2132) and the driven wheel (2133) are in transmission connection through the transmission belt (2134).

12. The multi-station welding apparatus according to any of the claims 7 to 9, wherein the right clamp assembly (212) comprises a right slide rail (2121), a right slide plate (2122), a right cylinder (2123) and a right clamp member (2124), the right slide rail (2121) and the right cylinder (2123) are mounted on the right welding table (24), the right slide plate (2122) is slidably disposed on the right slide rail (2121), the right slide plate (2122) is connected to an output end of the right cylinder (2123), and the right clamp member (2124) is mounted on the right slide plate (2122);

the right clamp assembly (212) further comprises a right tensioning cylinder (2126), and the right clamping piece (2124) is a right tensioning claw; the right elastic cylinder (2126) is arranged on the right sliding plate (2122), and the right elastic claw is connected with the output end of the right elastic cylinder (2126); when the output end of the right loosening cylinder (2126) extends, the right loosening claw opens; when the output end of the right elastic cylinder (2126) contracts, the right elastic claw is tightened.

13. The multi-station welding apparatus according to claim 1, wherein said welding device (22) comprises a Y-axis rodless cylinder (221), a Z-axis rodless cylinder (222), and a welding head (223), said Z-axis rodless cylinder (222) being mounted on a sliding seat of said Y-axis rodless cylinder (221), said welding head (223) being mounted on a sliding seat of said Z-axis rodless cylinder (222).

14. The multi-station welding equipment according to claim 13, characterized in that the welding device (22) further comprises an orientation conversion part (224), the orientation conversion part (224) comprises a fixed disc (2241), a connecting part (2242) and an inclined disc (2243), one end of the connecting part (2242) is connected with the fixed disc (2241), the other end of the connecting part is connected with the inclined disc (2243), a sliding seat of the Z-axis rodless cylinder (222) is connected with the fixed disc (2241), the welding head (223) is installed on the inclined disc (2243), and the inclined disc (2243) extends obliquely from top to bottom to one side where the connecting part (2242) is located.

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