CN222696238U - Automatic welding machine for elastic thin plates - Google Patents

Abstract

The utility model provides an automatic welding machine for elastic thin plates, which is applied to the technical field of welding equipment and comprises a welding mechanism, wherein the welding mechanism comprises a fitting plate for clamping a fitting I, a fitting II is clamped on the fitting I, welding grooves are formed in two sides of the fitting plate, the fitting plate is arranged on a sliding seat I, welding heads I and welding heads II are respectively arranged on two sides of the fitting plate, the welding heads II are connected to a fixed plate I, the welding heads I are connected to the sliding seat II, the sliding seat II is driven to move by a cylinder II, the cylinder II drives the sliding seat II to move to the welding heads I to enter corresponding welding grooves, the welding heads I are pushed to move to the welding heads II to enter corresponding welding grooves, and when the cylinder II drives the sliding seat II to reset, the sliding seat I resets through an elastic piece. The second cylinder drives the second slide seat to move so that the first welding head moves to the first welding position, and the second slide seat pushes the first slide seat so that the second welding head can be positioned at the second welding position, so that automatic welding of the first fitting and the second fitting is realized, the welding position is accurate, and the welding efficiency is high.

Description

Automatic welding machine for elastic sheet

Technical Field

The utility model belongs to the technical field of welding equipment, and particularly relates to an automatic welding machine for an elastic sheet.

Background

Resistance welding is a method of welding by locally heating a weldment and pressurizing the weldment while using resistance heat generated by passing current through the weldment and a contact part as a heat source. During welding, no metal filling is needed, the productivity is high, the deformation of the weldment is small, and the automation is easy to realize.

As shown in fig. 1 to 3, the first fitting and the second fitting need to be welded by resistance welding, wherein the second fitting is clamped with the first fitting, the elastic sheet on the first fitting is welded with the second fitting to form a workpiece as shown in fig. 3, no automatic welding equipment matched with the first fitting is needed in the prior art, manual welding is needed in production, and the efficiency is low, so that an equipment capable of automatically welding the first fitting and the second fitting needs to be provided.

Disclosure of utility model

In view of the above problems in the prior art, the present utility model aims to provide an automatic welding machine for elastic thin plates, wherein a second cylinder drives a second slide seat to move so as to move a first welding head to a first welding position, and the first welding head pushes the second slide seat so as to enable the second welding head to be located at the second welding position, thereby realizing automatic welding of a first fitting and a second fitting, and having accurate welding positions and high welding efficiency.

The automatic welding machine for the elastic sheet comprises a welding mechanism, wherein the welding mechanism comprises a first assembly plate for clamping a first fitting, a second fitting is clamped on the first fitting, corresponding welding grooves are formed in two sides of the first assembly plate, the first assembly plate is arranged on a first sliding seat, a first welding head and a second welding head are respectively arranged on two sides of the first assembly plate, the second welding head is connected to a first fixing plate, the first welding head is connected to a second sliding seat, the second sliding seat is driven to move by a second cylinder, the second cylinder drives the second sliding seat to move to the first welding head to enter the corresponding welding grooves, the first welding head is pushed to move to the second welding head to enter the corresponding welding grooves, and when the second cylinder drives the second sliding seat to reset, the first sliding seat resets through an elastic piece.

Preferably, the second cylinder is arranged on the second fixing plate, a sliding rod sleeved with the second sliding seat is connected between the first fixing plate and the second fixing plate, and a guide rod sleeved with the first sliding seat is further connected on the first fixing plate.

Preferably, the automatic feeding device further comprises a feeding disc for conveying the first fitting, the feeding disc is connected with a conveying plate, the first fitting is distributed on the conveying plate in an array mode, a moving plate driven to move by the first cylinder is arranged at the terminal of the conveying plate through a supporting frame, a clamping groove for clamping the first fitting is formed in the moving plate, and when the clamping groove is communicated with the conveying groove of the conveying plate, the moving plate receives the first fitting conveyed by the conveying plate.

The feeding mechanism comprises a base plate, a plurality of clamping strips are arranged on the base plate, a strip-shaped transmission channel parallel to the X axis is formed between every two adjacent clamping strips, the fittings are distributed in the transmission channel in an array mode, the base plate is driven by a first motor to move along the Y axis, a connecting rod driven by a second motor to move along the X axis is arranged on the base plate, one end of the connecting rod is connected with a pushing block matched with the transmission channel, the first motor drives the base plate to move along the Y axis, the pushing block is clamped with the transmission channel, and when the second motor drives the connecting rod to move along the X axis, the pushing block pushes the fittings in the corresponding transmission channels to move towards the welding mechanism.

Preferably, the bottom plate is arranged on the movable plate, the movable plate is connected with the second slider, the second slider is sleeved with the second screw thread, one end of the second screw is connected with the driving end of the first motor, a guide rod is arranged beside the second screw, the movable plate is connected with the guide rod, and the first motor drives the second screw to rotate so as to drive the second slider to move on the second screw.

Preferably, the bottom plate is provided with a groove, and a clamping block is configured at the position of the movable plate corresponding to the groove.

Preferably, one end of the connecting rod, which is far away from the pushing block, is connected with the first slider, the first slider is sleeved with the first screw thread, one end of the first screw is connected with the driving end of the second motor, and the second motor drives the first screw to rotate so as to drive the first slider to move on the first screw.

The welding device comprises a welding mechanism, a material moving mechanism and a moving sliding table, wherein the welding mechanism is arranged above the welding mechanism, the material moving mechanism comprises an adsorption piece for transferring a first fitting and a clamp for transferring a second fitting, the clamp is further used for transferring a welded workpiece, the adsorption piece is driven by a third cylinder to move up and down, the third cylinder is arranged on the first moving sliding table, the clamp is driven by a fifth cylinder to move along an X axis, the clamp and the fifth cylinder are driven by a fourth cylinder to move up and down, the fourth cylinder is arranged on the second moving sliding table, and the first moving sliding table, the second moving sliding table and the moving sliding rail are in sliding connection.

Preferably, a receiving tray is configured at the side of the material moving mechanism, a guide plate obliquely arranged is erected above the receiving tray, the clamp comprises a clamping block driven by a clamping jaw cylinder, and the clamp is used for clamping a second fitting on the bottom plate and placing the second fitting on the assembly plate in a clamping manner, or is used for transferring a welded workpiece from the assembly plate to the receiving tray.

The automatic welding machine for the elastic sheet has the beneficial effects that through the structural design of the welding mechanism, the second cylinder drives the second slide seat to move so that the first welding head moves to the first welding position, and the first welding head pushes the second slide seat so that the second welding head can be positioned at the second welding position, so that the automatic welding of the first fitting and the second fitting is realized, the welding position is accurate, the welding efficiency is high, and when the second cylinder is reset, the first slide seat and the second slide seat can be automatically reset, and the manual participation degree is low.

The first feeding of the fittings is realized by driving the material moving plate to move through the first cylinder, when the clamping groove on the material moving plate is communicated with the transmission groove on the transmission plate, the material moving plate receives the first fitting to realize feeding, when the material moving plate moves towards the welding mechanism, the first fitting on the transmission plate is blocked to continuously advance through the material moving plate, the feeding pause is realized by utilizing the position change of the material moving plate, and compared with the mode of realizing the feeding pause by utilizing an electric switch, the mode has higher stability.

And the feeding of the second accessory is realized through the feeding mechanism, the sequential and single feeding of the second accessory is realized by utilizing the structural design of the bottom plate and the pushing block, and the feeding speed is convenient to control.

The movable sliding table on the material moving mechanism drives the absorption part to move, the movable sliding table II drives the clamp to move, automatic feeding of the first fitting and the second fitting is realized, automatic discharging can be realized after welding is finished, full-automatic operation of the whole welding process is realized, and welding efficiency is high.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic structural view of a first fitting in accordance with the present utility model;

FIG. 2 is a schematic structural view of a fitting II according to the present utility model;

FIG. 3 is a schematic view of the assembly of the first and second fittings according to the present utility model;

FIG. 4 is a schematic diagram of the structure of the present utility model;

FIG. 5 is an enlarged view of the structure of the present utility model at A in FIG. 4;

FIG. 6 is a schematic view of the welding mechanism of the present utility model;

FIG. 7 is a top view of the welding mechanism of the present utility model;

FIG. 8 is a schematic structural view of the feeding mechanism of the present utility model;

FIG. 9 is a front view of the loading mechanism of the present utility model;

Fig. 10 is a schematic structural view of a material transferring mechanism of the present utility model.

The drawing shows that 100 parts, first parts, 200 parts, second parts, 1 parts loading tray, 2 parts, workbench, 3 parts, transmission plate, 4 parts, welding mechanism, 401 parts, assembly plate, 402 parts, first fixing plate, 403 parts, sliding rod, 404 parts, first sliding seat, 405 parts, second sliding seat, 406 parts, second fixing plate, 407 parts, second cylinder parts, 408 parts, first welding head, 409 parts, second welding head, 410 parts, guide rod, 5 parts, loading mechanism, 501 parts, bottom plate, 502 parts, movable plate, 503 parts, clamping blocks, 504 parts, clamping strips, 505 parts, first motor, 506 parts, guide rod, 507 parts, second motor parts, 508 parts, first sliding block, 509 parts, first screw rod, 510 parts, connecting rod, 511 parts, pushing block, 512 parts, second sliding block, 513 parts, second screw rod, 6 parts, material moving mechanism, 601 parts, moving sliding rail, 602 parts, moving first sliding rod, 603 parts, second sliding table, 604 parts, third cylinder parts, 605 parts, adsorbing parts, 606 parts, fourth cylinder parts, 607 parts, clamp parts, 608 parts, fifth cylinder parts, 7 parts, receiving tray parts, 8 parts, moving plate, 9 parts, first cylinder parts, 10 parts, and supporting frame.

Detailed Description

Example 1

As shown in fig. 6 and 7, an automatic welding machine for elastic thin plates comprises a welding mechanism 4, wherein the welding mechanism 4 comprises a mounting plate 401 for clamping a first fitting 100, a second fitting 200 is clamped on the first fitting 100, corresponding welding grooves are formed in two sides of the mounting plate 401, the mounting plate 401 is mounted on a first sliding seat 404, a first welding head 408 and a second welding head 409 are respectively arranged on two sides of the mounting plate 401, and positions of the first welding head 408 and the second welding head 409 correspond to positions, which need to be welded, on the first fitting 100 and are used for welding two sides of the first fitting 100.

Further, a second welding head 409 is connected to the first fixing plate 402, a first welding head 408 is connected to the second sliding seat 405, the second sliding seat 405 is driven to move by a second cylinder 407, the second cylinder 407 is mounted on the second fixing plate 406, a sliding rod 403 sleeved with the second sliding seat 405 is connected between the first fixing plate 402 and the second fixing plate 406, and a guide rod 410 sleeved with the first sliding seat 404 is also connected to the first fixing plate 402.

During welding, the cylinder II 407 drives the sliding seat II 405 to move to the welding head I408 to enter the corresponding welding groove, and the welding head I408 pushes the sliding seat I404 to move to the welding head II 409 to enter the corresponding welding groove, and after the welding head I408 and the welding head II 409 are in place, the accessory I100 and the accessory II 200 are welded through the existing resistance welding technology.

After the welding is completed, the second cylinder 407 drives the second slide seat 405 to reset, and the first slide seat 404 resets through an elastic member (not shown in the figure), wherein the elastic member may be a spring or a shrapnel, and is mainly used for resetting the first slide seat 404 through elastic action.

In this embodiment, a worker is required to put the first fitting 100 into the mounting plate 401 for clamping, and put the second fitting 200 into the first fitting 100 for clamping. And after the welding is finished, the work piece which is finished by the welding is required to be taken out by a worker.

Example two

As shown in fig. 4, the structure of the present embodiment is different from that of the first embodiment in that, in order to realize the full-automatic operation of the welding process, the automatic welding machine for elastic sheet metal further includes a feeding tray 1 for conveying the first fitting 100, a feeding mechanism 5 for conveying the second fitting 200, and a material moving mechanism 6 mounted above the welding mechanism 4.

As shown in fig. 4 and 5, the feeding tray 1 is connected with a transmission plate 3, a fitting one 100 is installed in the feeding tray 1, and the working principle of the feeding tray 1 is the same as that of the vibration feeding tray in the prior art, and is not described herein. The first accessories 100 are distributed on the transmission plate 3 in an array manner, a material moving plate 8 driven by the first cylinder 9 to move is arranged at the terminal of the transmission plate 3 through a support frame 10, a clamping groove for clamping the first accessories 100 is formed in the material moving plate 8, when the clamping groove is communicated with the transmission groove of the transmission plate 3, the material moving plate 8 receives the first accessories 100 transmitted by the transmission plate 3, the first cylinder 9 is arranged on the support frame 10, and the material moving plate 8 is in sliding connection with the support frame 10.

The first feeding plate 8 is driven by the first air cylinder 9 to move to realize sequential and single feeding of the first fitting 100, when the clamping groove on the first feeding plate 8 is communicated with the transmission groove on the transmission plate 3, the first fitting 100 is supported by the first feeding plate 8 to realize feeding, and when the first feeding plate 8 moves towards the welding mechanism 4, the first fitting 100 on the transmission plate 3 is blocked to continuously advance by the first feeding plate 8, and feeding suspension is realized by utilizing the position change of the first feeding plate 8.

As shown in fig. 4, 8 and 9, the feeding mechanism 5 includes a bottom plate 501, a plurality of clamping strips 504 are disposed on the bottom plate 501, a strip-shaped transmission channel parallel to the X axis is formed between two adjacent clamping strips 504, and the second fittings 200 are distributed in the transmission channel in an array.

The bottom plate 501 is driven by a first motor 505 to move along the Y axis, specifically, the bottom plate 501 is mounted on the movable plate 502, a groove is formed in the bottom plate 501, a clamping block 503 is configured at a position of the movable plate 502 corresponding to the groove, the bottom plate 501 is placed on the movable plate 502, and the bottom plate 501 is clamped on the movable plate 502 through cooperation between the clamping block 503 and the groove.

Referring to fig. 9, the movable plate 502 is connected to the second slider 512, the second slider 512 is in threaded socket connection with the second screw 513, one end of the second screw 513 is connected to the driving end of the first motor 505, a guide rod 506 is disposed beside the second screw 513, the movable plate 502 is connected to the guide rod 506, and the first motor 505 drives the second screw 513 to rotate to drive the second slider 512 to move on the second screw 513.

The screw rod II 513 and the two ends of the guide rod 506 are connected with the auxiliary plate and are erected below the bottom plate 501, the motor I505 is installed on the auxiliary plate, the screw rod II 513 is driven to rotate through the motor I505, and the screw rod II 513 is sleeved with the slide block II 512 in a threaded manner, so that the slide block II 512 is driven to move on the screw rod II 513, the movable plate 502 and the bottom plate 501 are driven to move, the position of the bottom plate 501 is adjusted, and the moving stability of the movable plate 502 is improved through the guide rod 506.

In addition, a connecting rod 510 driven by a motor two 507 to move along the X-axis is mounted on the bottom plate 501, and one end of the connecting rod 510 is connected with a pushing block 511 adapted to the transmission channel. Specifically, one end of the connecting rod 510 far away from the pushing block 511 is connected with the first slider 508, the first slider 508 is in threaded sleeve connection with the first screw 509, one end of the first screw 509 is connected with the driving end of the second motor 507, and the second motor 507 drives the first screw 509 to rotate so as to drive the first slider 508 to move on the first screw 509.

The first motor 505 drives the bottom plate 501 to move along the Y axis, adjusts the position of the bottom plate 501, makes the pushing block 511 clamped with the transmission channel on the bottom plate 501, and then when the second motor 507 drives the connecting rod 510 to move along the X axis, the pushing block 511 pushes the second fitting 200 in the corresponding transmission channel to move towards the welding mechanism 4. The positions of the bottom plate 501 and the pushing block 511 are adjusted by driving the motor I505 and the motor II 507, so that the sequential and single feeding of the accessory II 200 is realized.

As shown in fig. 4 and 10, the transfer mechanism 6 includes an adsorbing member 605 for transferring the first fitting 100 and a jig 607 for transferring the second fitting 200, and the jig 607 is also used for transferring the welded work.

Referring to fig. 10, the adsorbing member 605 is driven by the third cylinder 604 to move up and down, the third cylinder 604 is mounted on the first moving slide table 602, the clamp 607 is driven by the fifth cylinder 608 to move along the X-axis, the clamp 607 and the fifth cylinder 608 are driven by the fourth cylinder 606 to move up and down, the fourth cylinder 606 is mounted on the second moving slide table 603, and the first moving slide table 602, the second moving slide table 603 and the moving slide rail 601 are slidably connected. The working principle of the first movable sliding table 602, the second movable sliding table 603 and the movable sliding rail 601 is the same as that of the electric sliding rail, and the movement of the first movable sliding table 602 and the second movable sliding table 603 can be realized through the movable module, so that the main purpose is to adjust the positions of the adsorbing elements 605 and the clamp 607.

In addition, a receiving tray 7 is disposed beside the material moving mechanism 6, a deflector obliquely disposed is erected above the receiving tray 7, the clamp 607 includes a clamping block driven by a clamping jaw cylinder, and the clamp 607 is used for clamping and placing the second fitting 200 on the bottom plate 501 at the first fitting 100 on the mounting plate 401, or transferring the welded workpiece from the mounting plate 401 to the receiving tray 7. The specific structure of the clamping block is not limited, and the second fitting 200 can be grabbed.

The working principle is that when the automatic welding machine for the elastic thin plates is used, the first accessories 100 are transmitted to the transmission plate 3 from the feeding disc 1 to be distributed in an array mode, then the first cylinder 9 drives the material moving plate 8 to move, the clamping groove on the material moving plate 8 is communicated with the transmission groove on the transmission plate 3, the material moving plate 8 receives the first accessories 100, then the first cylinder 9 moves the material moving plate 8 to the welding mechanism 4, and at the moment, the material moving plate 8 stops the first accessories 100 on the transmission plate 3 to continuously move, so that feeding is stopped.

Meanwhile, the first motor 505 drives the bottom plate 501 to adjust the position, the second motor 507 drives the second motor 511 to adjust the position of the pushing block 511, and the pushing block 511 pushes the second fitting 200 in the transmission through groove on the bottom plate 501 to move to the welding mechanism 4.

The first and second accessories 100 and 200 are respectively fed through the material moving plate 8 and the feeding mechanism 5, and at the moment, the first moving sliding table 602 drives the adsorbing element 605 to move so that the adsorbing element 605 moves along with the third cylinder 604, and the first accessory 100 on the material moving plate 8 is adsorbed and transferred to the assembly plate 401 in the welding mechanism 4 to be clamped. Then, the second sliding table 603 is moved to drive the clamp 607 to move, so that the clamp 607 acts along with the fourth air cylinder 606 and the fifth air cylinder 608 to clamp and transfer the second fitting 200 on the bottom plate 501 into the fitting plate 401 to be clamped with the first fitting 100.

During welding, the second cylinder 407 drives the second slide seat 405 to move to the first welding head 408 to enter the corresponding welding groove, the first welding head 408 pushes the first slide seat 404 to move to the second welding head 409 to enter the corresponding welding groove, after the first welding head 408 and the second welding head 409 are in place, the first fitting 100 and the second fitting 200 are welded through the existing resistance welding technology, and after welding is completed, the second cylinder 407 drives the second slide seat 405 to reset, and the first slide seat 404 is reset through the elastic piece.

At this time, the second sliding table 603 is moved to drive the clamp 607 to move, so that the clamp 607 transfers the welded workpiece to the receiving tray 7.

The above actions are repeated, so that automatic feeding, automatic welding and automatic discharging of the first and second accessories 100 and 200 are realized, the manual participation degree is reduced, and the welding efficiency and effect are improved.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (9)

1. The automatic welding machine for the elastic sheet is characterized by comprising a welding mechanism (4), wherein the welding mechanism (4) comprises a mounting plate (401) for clamping a first fitting (100), a second fitting (200) is clamped on the first fitting (100), corresponding welding grooves are formed in two sides of the mounting plate (401), the mounting plate (401) is arranged on a first sliding seat (404), a first welding head (408) and a second welding head (409) are respectively arranged on two sides of the mounting plate (401), the second welding head (409) is connected to the first fixing plate (402), the first welding head (408) is connected to a second sliding seat (405), and the second sliding seat (405) is driven by a second air cylinder (407) to move;

The cylinder II (407) drives the sliding seat II (405) to move to the welding head I (408) to enter the corresponding welding groove, the welding head I (408) pushes the sliding seat I (404) to move to the welding head II (409) to enter the corresponding welding groove, and when the cylinder II (407) drives the sliding seat II (405) to reset, the sliding seat I (404) resets through the elastic piece.

2. The automatic welding machine for elastic sheet according to claim 1, wherein the second cylinder (407) is mounted on the second fixing plate (406), a sliding rod (403) sleeved with the second sliding seat (405) is connected between the first fixing plate (402) and the second fixing plate (406), and a guide rod (410) sleeved with the first sliding seat (404) is further connected to the first fixing plate (402).

3. The automatic welding machine for elastic sheet metal according to claim 1, further comprising a feeding tray (1) for conveying the first fitting (100), wherein the feeding tray (1) is connected with a conveying plate (3), the first fitting (100) is distributed on the conveying plate (3) in an array manner, a moving plate (8) driven to move by a first cylinder (9) is arranged at the terminal of the conveying plate (3) through a supporting frame (10), a clamping groove for clamping the first fitting (100) is formed in the moving plate (8), and the moving plate (8) receives the first fitting (100) conveyed by the conveying plate (3) when the clamping groove is communicated with the conveying groove of the conveying plate (3).

4. The automatic welding machine for elastic sheets according to claim 1, further comprising a feeding mechanism (5) for conveying the second fittings (200), wherein the feeding mechanism (5) comprises a bottom plate (501), a plurality of clamping strips (504) are arranged on the bottom plate (501), a strip-shaped conveying channel parallel to the X axis is formed between two adjacent clamping strips (504), and the second fittings (200) are distributed in the conveying channel in an array manner;

The base plate (501) is driven by a first motor (505) to move along a Y axis, a connecting rod (510) driven by a second motor (507) to move along an X axis is arranged on the base plate (501), and one end of the connecting rod (510) is connected with a pushing block (511) matched with a transmission channel;

The first motor (505) drives the bottom plate (501) to move along the Y axis, so that the pushing block (511) is clamped with the transmission channel, and when the second motor (507) drives the connecting rod (510) to move along the X axis, the pushing block (511) pushes the second fitting (200) in the corresponding transmission channel to move towards the welding mechanism (4).

5. The automatic welding machine for elastic sheets according to claim 4, wherein the bottom plate (501) is mounted on the movable plate (502), the movable plate (502) is connected with the second slider (512), the second slider (512) is in threaded connection with the second screw (513), one end of the second screw (513) is connected with the driving end of the first motor (505), a guide rod (506) is arranged beside the second screw (513), the movable plate (502) is connected with the guide rod (506), and the first motor (505) drives the second screw (513) to rotate so as to drive the second slider (512) to move on the second screw (513).

6. The automatic welding machine for elastic sheet according to claim 5, wherein the bottom plate (501) is provided with a groove, and a clamping block (503) is arranged at a position of the movable plate (502) corresponding to the groove.

7. The automatic welding machine for elastic sheet according to claim 4, wherein one end of the connecting rod (510) far away from the pushing block (511) is connected with a first slider (508), the first slider (508) is in threaded connection with a first screw rod (509), one end of the first screw rod (509) is connected with the driving end of a second motor (507), and the second motor (507) drives the first screw rod (509) to rotate so as to drive the first slider (508) to move on the first screw rod (509).

8. The automatic welding machine for elastic sheets according to claim 1, further comprising a material moving mechanism (6) erected above the welding mechanism (4), wherein the material moving mechanism (6) comprises an adsorbing piece (605) for transferring the first fitting (100) and a clamp (607) for transferring the second fitting (200), and the clamp (607) is further used for transferring the welded workpiece;

The adsorption piece (605) is driven by a third air cylinder (604) to move up and down, the third air cylinder (604) is arranged on a first movable sliding table (602), the clamp (607) is driven by a fifth air cylinder (608) to move along an X axis, the clamp (607) and the fifth air cylinder (608) are driven by a fourth air cylinder (606) to move up and down, the fourth air cylinder (606) is arranged on a second movable sliding table (603), and the first movable sliding table (602), the second movable sliding table (603) and the movable sliding rail (601) are in sliding connection.

9. The automatic welding machine for elastic sheets according to claim 8, wherein a receiving tray (7) is configured at the side of the material moving mechanism (6), a deflector arranged obliquely is arranged above the receiving tray (7), the clamp (607) comprises a clamping block driven by a clamping jaw cylinder, and the clamp (607) is used for clamping and placing a fitting two (200) on the bottom plate (501) at a fitting one (100) on the assembly plate (401) or transferring a welded workpiece from the assembly plate (401) to the receiving tray (7).