CN220993123U - Double-row multipoint controllable rolling type welding machine - Google Patents

Abstract

The utility model relates to a double-row multipoint controllable rolling type welding machine which comprises a welding workbench and a cross beam, wherein a Z-axis module is movably arranged on the cross beam, a laser welding head is arranged on the Z-axis module, a pressing device is fixedly connected to the cross beam, and the pressing device consists of a pressing frame and a plurality of guide pressing groups; the pressing frame is provided with a lateral surface of the cross beam, the parts of the bottom of the pressing frame, which are close to the left end and the right end, are fixedly connected with supporting seats, the bottoms of the supporting seats are fixedly provided with sliding blocks, and the sliding blocks are in front-back sliding fit with sliding rails arranged on the welding workbench. The double-row multi-point controllable rolling type welding machine can ensure the accuracy and continuity of welding tracks and has high processing precision; the deformation of the plate in the welding process can be controlled; the complexity of the processing procedure can be reduced; each pressing device can be controlled independently, so that free avoidance of clamps can be achieved in the area where the end part starts to be welded, and the pressing device is applicable to machining of workpieces with different sizes.

Description

Double-row multipoint controllable rolling type welding machine

Technical Field

The utility model relates to the field of laser welding, in particular to a double-row multipoint controllable rolling type welding machine.

Background

In laser welding, there is a risk of welding distortion when stitch welding of sheet metal, especially sheet metal workpieces of large area.

At present, one way of controlling welding deformation during plate stitch welding is to fix a plate workpiece by using a pressure clamping device, wherein the pressure clamping device is fixedly arranged on a welding table, and has relatively simple structure and convenient operation; however, when the welding mechanism is used for processing, the plate workpiece to be welded needs to be in a moving state, the plate workpiece placed on the top of the plate workpiece is driven to move in a stepping mode through a load arranged on a welding table, the plate workpiece is stopped during welding, the workpiece is integrally moved after the welding area on the plate workpiece is welded, the plate workpiece is moved to another part on the plate workpiece, the plate workpiece is stopped after the welding area on the other part is moved to the welding processing part of the welding mechanism, and welding is performed again.

The welding mechanism needs to ensure the firmness of the clamping device, the load driving of the moving part needs to be designed according to the size of the plate workpiece, the welding mechanism has certain limitation, and the load driving needs to have stable precision control so as to ensure the position precision of the top plate workpiece when moving, further ensure the welding precision, lead the structure of the equipment to be complex, have great manufacturing difficulty and greatly increase the production cost of the equipment of the welding mechanism.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a double-row multi-point controllable rolling type welding machine which is high in adaptability, constant in load and high in welding machining precision.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The double-row multipoint controllable rolling type welding machine comprises a welding workbench and a cross beam, wherein the cross beam is longitudinally and movably erected on the welding workbench, a Z-axis module capable of linearly moving along the left and right length directions of the cross beam is movably arranged on the cross beam, a laser welding head is arranged on the Z-axis module, a pressing device which is consistent with the length of the cross beam and is parallel to the cross beam is fixedly connected to the cross beam, and the pressing device consists of a pressing frame and a plurality of guide pressing groups uniformly distributed along the length directions of the pressing frame; the pressing frame is arranged on the side face of the cross beam, two groups of bilateral symmetry supporting seats are fixed at the positions, close to the left end and the right end, of the bottom of the pressing frame, the supporting seats are fixedly connected with the cross beam, sliding blocks are fixed at the bottoms of the supporting seats, the sliding blocks are in sliding fit with sliding rails longitudinally arranged on the welding workbench, and the cross beam can drive the pressing device to synchronously move around the top of the welding workbench.

Further, an installation cavity is formed in the pressing frame, a plurality of vertical fixedly welded partition plates are uniformly distributed in the installation cavity along the length direction of the pressing frame, the partition plates are used for dividing the installation cavity into a plurality of unit cavities with the same size, an installation plate is fixedly welded at the bottom of each unit cavity, and the guide pressing group is installed on the installation plate.

Further, the guiding material pressing group consists of a material pressing cylinder, a rolling frame and rollers; the two rollers are connected to the rolling frame in a shaft way, the rolling frame is arranged below the bottom of the mounting plate, the material pressing cylinder is fixedly arranged at the center of the top of the mounting plate, the piston rod of the material pressing cylinder is vertically downward, and the lower end of the piston rod of the material pressing cylinder penetrates through a preset connecting hole on the mounting plate to be fixedly connected with the rolling frame; the material pressing cylinder can drive the rolling frame to move up and down through the piston rod, and drive the roller wheel which is connected to the rolling frame in a shaft-connecting mode to move up and down synchronously.

Further, the guide pressing group further comprises a guide sleeve and a guide rod, wherein the guide sleeve is sleeved outside the guide rod and is in sliding fit with the guide rod; the guide sleeves are fixedly connected with preset connecting holes on the mounting plates through bolts, two guide sleeves are arranged on each mounting plate and are respectively arranged on the left side and the right side of the material pressing cylinder, and each guide sleeve is matched with a guide rod.

Further, the material pressing device is provided with two groups, and the bottoms of the two groups of material pressing devices are connected together through a supporting seat; the two groups of material pressing devices are symmetrically arranged on the front side and the rear side of the cross beam, a distance is reserved between the two groups of material pressing devices, and laser welding heads on the Z-axis module are located in the distance between the front group of material pressing devices and the rear group of material pressing devices and do not interfere with each other.

Further, the part of the top of the welding workbench near the front end and the part near one side of the welding workbench are provided with a plurality of groups of clamps, wherein the plurality of groups of clamps arranged at the part of the top of the welding workbench near the front end are transversely arranged in parallel at equal intervals, and the plurality of groups of clamps arranged at the top of the welding workbench near one side of the welding workbench are arranged in front and back at equal intervals.

Further, the clamp comprises a base, a clamping cylinder with a piston rod vertically upwards is arranged on the back surface of the base, a clamping plate is connected to the top of the piston rod of the clamping cylinder in a shaft mode, the rear end of the clamping plate is connected with the top of the piston rod of the clamping cylinder in a hinge mode, and a clamping head is connected to the lower end of the front end of the clamping plate in a shaft mode.

Compared with the prior art, the double-row multipoint controllable rolling type welding machine has the following advantages:

1. The motion between the pressing device and the laser welding head is relatively static, so that the welding track can be ensured to be correct and continuous in the processing range, avoidance in the middle is not needed to be considered, and the processing precision is high;

2. The material pressing device and the laser welding head are always in one area, and the distance between the material pressing device and the laser welding head is relatively close, so that deformation in the welding process can be controlled;

3. The workpiece is fixed, the laser welding head continuously moves in the whole processing range, so that the complexity of a processing program can be reduced, the regional segmentation programming is reduced, and the programming complexity is reduced;

4. Each pressing device can be controlled independently, not only can the free avoidance of the clamp be made in the area where the end part starts to be welded, but also the processing of workpieces with different sizes can be applied, for example, all guide pressing groups can be used when processed parts are wider, if the width of the parts is reduced by half, the corresponding use of half of rollers is only needed, at this time, the use amount of compressed air can be reduced, unnecessary load generation can be avoided, and the motor load is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a front side of a double row multipoint controllable roll welder according to the present utility model;

FIG. 2 is a schematic diagram of a welding table in a double-row multipoint controllable rolling type welding machine according to the present utility model;

FIG. 3 is a schematic diagram showing the assembly structure of a beam and a pressing device in a double-row multipoint controllable rolling type welding machine;

FIG. 4 is a schematic diagram of the top structure of a pressing device in a double-row multipoint controllable rolling type welding machine;

FIG. 5 is a schematic view of the bottom structure of a pressing device in a double-row multipoint controllable rolling type welding machine;

FIG. 6 is a schematic diagram of the top structure of a press frame in a double-row multipoint controllable rolling type welding machine according to the present utility model;

FIG. 7 is a schematic view of the bottom structure of a press frame in a double-row multipoint controllable rolling type welding machine according to the present utility model;

FIG. 8 is a schematic diagram of the top structure of a pilot press set in a double-row multi-point controlled roll bonding machine according to the present utility model;

FIG. 9 is a schematic view of the bottom structure of a pilot press set in a double-row multi-point controlled roll bonding machine according to the present utility model;

FIG. 10 is a schematic diagram of the front structure of a clamp in a double-row multipoint controllable roll welding machine according to the present utility model;

FIG. 11 is a schematic view of the back face structure of a clamp in a double row multipoint controllable roll bonding machine according to the present utility model.

In the figure: 1. a welding workbench; 11. a slide rail; 2. a cross beam; 21. a Z-axis module; 211. a laser welding head; 3. a pressing device; 31. a pressing frame; 311. a partition plate; 312. a cell cavity; 313. a mounting plate; 32. a support base; 321. a slide block; 33. guiding a pressing group; 331. a material pressing cylinder; 332. guide sleeve; 333. a guide rod; 334. a rolling frame; 335. a roller; 4. a clamp; 41. a base; 42. a clamping cylinder; 43. a clamping plate; 431. a chuck.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the embodiments of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the product of the present utility model is conventionally put when used, it is merely for convenience of describing the present utility model and simplifying the description, and it does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like, if any, do not denote a requirement that the component be absolutely horizontal or vertical, but rather may be slightly inclined. As "horizontal" merely means that its orientation is more horizontal than "vertical" and does not mean that the structure or component must be entirely horizontal, but may be slightly inclined.

In the description of the embodiments of the present utility model, "plurality" means at least 2.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples

Referring to fig. 1 of the specification, fig. 1 of the specification shows an embodiment of a double-row multi-point controllable rolling type welding machine of the present utility model, which is used for stitch welding of plates and can effectively prevent risks of welding deformation during welding of plates, the double-row multi-point controllable rolling type welding machine comprises a welding workbench 1 and a beam 2, the workbench 1 is a conventional workbench for processing laser welding equipment, the beam 2 is a general processing beam in the laser welding equipment, a longitudinally movable frame is movably arranged on the welding workbench 1, a Z-axis module 21 capable of linearly moving along the left-right length direction of the beam 2 is movably arranged on the beam 2, the Z-axis module 21 can move left-right on the beam, the Z-axis module 21 is provided with a laser welding head 211, and the laser welding head 211 can move up and down on the Z-axis module 21, so that the distance between the welding head and a workpiece to be welded can be conveniently adjusted; in order to be convenient for fixing and limiting the plate placed on the welding workbench 1 in the horizontal direction and convenient for disassembly, as shown in the accompanying drawings 1 and 2 in the specification, a plurality of groups of clamps 4 which are arranged in parallel at equal intervals are arranged at the part, close to the front end, of the top of the welding workbench 1 along the left and right length directions of the part, and likewise, a plurality of groups of clamps 4 are arranged at the part, close to one side, of the top of the welding workbench 1 along the front and rear length directions of the part, at equal intervals, a plurality of clamps 4 which are transversely and longitudinally arranged can clamp and limit the front end and one side of the plate placed on the welding workbench 1, thereby realizing the limiting and fixing of the horizontal position of the plate, a plurality of clamps 4 which are in L-shaped structure layout realize the position calibration of the fixed plate to a certain extent, and the alignment of welding processing is convenient. In order to clamp the top surface of the plate effectively and also facilitate the loosening of the plate, and facilitate the unloading of the plate, referring to fig. 10 and 11 in the specification, the clamp 4 comprises a base 41, the base 41 is in an L-shaped structure and is fixedly mounted on the welding workbench 1 through bolts, the back surface of the base 41, namely, the rear side of the vertical elevation thereof is provided with a clamping cylinder 42 with a piston rod vertically upwards, the bottom of the clamping cylinder 42 is axially connected with a side plate on the back surface of the vertical elevation of the base 41, the side plate is provided with two side plates which are fixedly welded with the vertical elevation and the horizontal base plate on the base 41, the clamping cylinder 42 is symmetrically arranged between the two side plates symmetrically arranged, a clamping plate 43 is connected between the two side plates at a position close to the top of the two side plates in a shaft way, the front end of the clamping plate 43 extends forwards to the outer side of the front surface of the vertical face on the base 41, the rear end of the clamping plate 43 is hinged with the top of a piston rod which is vertically upwards arranged on the clamping cylinder 42, when the clamping cylinder 42 drives the piston rod to ascend or descend, the front end of the clamping plate 43 hinged on the piston rod moves in the opposite direction with the rear end of the clamping plate, namely, when the rear end of the clamping plate 43 is upwards driven by the clamping cylinder 42, the front end of the clamping plate 43 is upwards when the clamping cylinder 42 is downwards pulled, the lower end of the front end of the clamping plate 43 is connected with a clamping head 431 in a shaft way, the clamping head 431 moves up and down synchronously along with the front end of the clamping plate 42, the clamping device is used for carrying out the pressing and clamping work on the top surface of the plate placed on the welding workbench 1 and limiting the plate on the welding workbench 1; referring to fig. 3 of the specification, in order to effectively prevent the deformation of the laser welding head 211 during the welding of the plate on the welding workbench 1, the beam 2 is fixedly connected with a pressing device 3 which is consistent with the length of the beam and parallel to the beam 2, the pressing device 3 can move synchronously along with the movement of the beam 2, and the laser welding head 211 is used for pressing the plate below the laser welding head 211 during the welding process; referring to fig. 4 and 5 of the specification, the pressing device 3 is composed of a pressing frame 31 and a plurality of guiding pressing groups 33 uniformly distributed along the length direction of the pressing frame 31; in order to prevent the presser 3 from interfering with the clamp 4, the top of the clamp 4 is lower than the bottom of the presser 3 when the guide presser 33 is raised to the highest position, ensuring that the presser 3 can go over the top of the clamp 4 when moving with the beam 2. Referring to fig. 3 of the specification, the pressing frame 31 is fixedly connected to the side surface of the beam 2, two groups of support seats 32 which are bilaterally symmetrical are fixed at the positions, close to the left end and the right end, of the bottom of the pressing frame, the support seats 32 are fixedly connected with the beam 2 through bolts, and the beam 2 can drive the pressing frame 31 connected with the pressing frame to move synchronously back and forth when moving back and forth, so as to drive the pressing device 3 connected with the pressing frame 31 to move synchronously back and forth; in order to ensure the structural firmness of the pressing frame 31 and facilitate the fixed installation of the guiding pressing group 33, referring to fig. 6 and 7 in the specification, an installation cavity is formed in the pressing frame 31, a plurality of vertical fixedly welded partition plates 311 are uniformly distributed in the installation cavity along the length direction of the pressing frame 31, the installation cavities are divided into a plurality of unit cavities 312 with the same size by the plurality of partition plates 311, a mounting plate 313 is fixedly welded at the bottom of each unit cavity 312, the guiding pressing group 33 is mounted on the mounting plate 313, and the bottom of the guiding pressing group 33 is positioned below the bottom of the pressing frame 31; referring to fig. 8 and 9 of the specification, the guiding pressing group 33 is composed of a pressing cylinder 331, a rolling frame 334 and a roller 335; the two rollers 335 are axially connected to the rolling frame 334, the two rollers 335 are symmetrically arranged front and back, stability in pressing is guaranteed, unbalanced load cannot occur, the rollers 335 are barreled, a good pressing effect can be achieved on a plate, rolling is facilitated when the surface of the plate moves, and friction with the surface of the plate is prevented; the rolling frame 334 is arranged below the bottom of the mounting plate 313, the rolling frame 334 is not fixedly connected with the mounting plate 313, the material pressing cylinder 331 is fixedly arranged at the center of the top of the mounting plate 313 for convenient connection, the piston rod of the material pressing cylinder 331 is vertically downward, the lower end of the piston rod of the material pressing cylinder 331 passes through a preset connection hole on the mounting plate 313 and is fixedly connected with the rolling frame 334, the preset connection hole on the mounting plate 313 is in clearance fit with the piston rod, interference between the piston rod and the mounting plate 313 is avoided when the piston rod moves up and down, the material pressing cylinder 331 can drive the rolling frame 334 to move up and down through the piston rod, the roller 335 connected to the roller frame 334 is driven to move synchronously up and down, the guiding pressing group 33 further comprises a guide sleeve 332 and a guiding rod 333 for ensuring the balance of the roller frame 334 when moving up and down, the guide sleeve 332 is sleeved outside the guiding rod 333 and is in sliding fit with the guiding rod 333, the guide sleeve 332 is fixedly connected with a preset connecting hole on the mounting plate 313 through a bolt, the guide sleeve 332 is fixedly arranged in the connecting hole on the mounting plate 313, the guide sleeve penetrates through the upper surface and the lower surface of the mounting plate 313, the guiding rod 333 is penetrated in the guide sleeve 332 for ensuring the balance of the two sides of a piston rod on the pressing cylinder 331, two guide sleeves 332 are arranged on each mounting plate 313, the two guide sleeves 332 are respectively arranged on the left side and the right side of the material pressing cylinder 331, each guide sleeve 332 is matched with a guide rod 333, and the bottoms of the guide rods 333 are fixedly connected with the rolling frames 334.

In order to facilitate the movement of the support base 32 on the welding workbench 1, a sliding block 321 is fixed at the bottom of the support base 32, as shown in fig. 2 of the specification, the sliding block 321 is in sliding fit with a sliding rail 11 longitudinally arranged on the welding workbench 1, the length of the sliding rail 11 is consistent with the length of a rail for the front and back movement of an auxiliary beam 2 on the welding workbench, the two sliding rails 11 are parallel left and right, two groups of support bases 32 corresponding to the left and right ends of the bottom of the pressing frame 31 are correspondingly provided with two sliding rails 11, and when the beam 2 moves through a linear module for driving the front and back movement of the beam 2, the pressing device 3 can be driven to synchronously move front and back at the top of the welding workbench 1; in order to guarantee the homogeneity of welding area when the plate welds, the swager 3 has two sets of, connects together through supporting seat 32 between the bottom of two sets of swager 3, and two sets of swager 3 symmetry sets up the front and back both sides at crossbeam 2, guarantees the atress equilibrium of welding area, and has the interval between two sets of swager 3, laser welding head 211 on the Z axle module 21 is located the interval between two sets of swager 3 around, mutually noninterferes, guarantees that the Z axle module 21 can be on crossbeam 2 about and the activity of drive laser welding head 211 oscilaltion.

The specific working principle is as follows: after the plate workpiece is placed on the welding workbench 1, the clamp 4 positioned at the front end and on one side of the welding workbench 1 clamps and fixes the plate workpiece, so that the plate workpiece is fixedly positioned on the welding workbench, during welding, the cross beam 2 is controlled to move and drives the material pressing device 3 connected with the cross beam 2 to synchronously move, the material pressing device 3 and the laser welding head 211 are relatively static, when the cross beam 2 and the material pressing device 3 positioned on one side of the front face of the cross beam pass over the clamp 4 positioned at the front end of the welding workbench 1, the roller 335 positioned on the material pressing device 3 positioned on one side of the front face of the cross beam descends to prop against the plate workpiece on the welding workbench 1, the material pressing cylinder 331 on the guide material pressing group 33 can be independently controlled to drive the roller 335 to move up and down, the independent avoidance function can be realized, and the guide rod 333 can ensure that the lifting movement of the roller 335 can not deviate; when the laser welding head 211 moves to the upper part of the plate workpiece, welding is started, after a certain distance is needed to be welded, and when the moving distance is enough that the material pressing device 4 on one side of the back surface of the beam 2 corresponds to the plate workpiece up and down, the roller on the material pressing device 4 is driven to descend by the material pressing cylinder 331, in the welding process, the two groups of material pressing devices 3 on two sides of the beam 2 are always pressed against the welding area, so that the flatness of the welding area is ensured, and after that, the whole beam 2 is welded once and once, and the welding deformation condition of the welding area of the plate workpiece is effectively prevented.

The motion between the pressing device 3 of the double-row multi-point controllable rolling type welding machine and the laser welding head 211 is relatively static, so that the welding track can be ensured to be correct and continuous in the processing range, avoidance in the middle is not considered, and the processing precision is high; the material pressing device 3 and the laser welding head 211 are always in one area, and the distance between the material pressing device 3 and the laser welding head 211 is relatively close, so that deformation in the welding process can be controlled; the workpiece is fixed, the laser welding head 211 continuously moves in the whole processing range, so that the complexity of a processing program can be reduced, the regional segmentation programming is reduced, and the programming complexity is reduced; each pressing device 3 can be independently controlled, not only can the free avoidance of the clamp 4 be made in the area where the end part starts to be welded, but also the processing of workpieces with different sizes can be applied, for example, when processed parts are relatively wide, all guide pressing groups 33 can be used, if the width of the parts is reduced by half, the corresponding use of half of the rollers 335 is only needed, at this time, the use amount of compressed air can be reduced, unnecessary load generation can be avoided, and the motor load produced by compressed air for the air cylinder is reduced.

It is emphasized that: the above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. 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 (7)

1. The utility model provides a controllable roll extrusion formula welding machine of biserial multiple spot, includes weldment work platform (1) and crossbeam (2), crossbeam (2) vertically movable erects weldment work platform (1) is last, activity is provided with Z axle module (21) that can prolong its left and right sides length direction rectilinear movement on crossbeam (2), is provided with laser welding head (211) on Z axle module (21), its characterized in that: the transverse beam (2) is fixedly connected with a pressing device (3) which is consistent with the length of the transverse beam and is parallel to the transverse beam (2), and the pressing device (3) consists of a pressing frame (31) and a plurality of guiding pressing groups (33) uniformly distributed along the length direction of the pressing frame (31); the pressing frame (31) is arranged on the side face of the cross beam (2), two groups of bilateral symmetry supporting seats (32) are fixed at the positions, close to the left end and the right end, of the bottom of the pressing frame, the supporting seats (32) are fixedly connected with the cross beam (2), sliding blocks (321) are fixed at the bottoms of the supporting seats (32), the sliding blocks (321) are in sliding fit with sliding rails (11) longitudinally arranged on the welding workbench (1), and the cross beam (2) can drive the pressing device (3) to synchronously move around the top of the welding workbench (1).

2. A double row, multi-point, controlled roll seam welder as defined in claim 1 wherein: the pressing frame (31) is internally provided with an installation cavity, a plurality of vertical partition plates (311) are uniformly distributed in the installation cavity along the length direction of the pressing frame (31), the partition plates (311) are used for dividing the installation cavity into a plurality of unit cavities (312) with the same size, an installation plate (313) is fixedly welded at the bottom of each unit cavity (312), and the guide pressing group (33) is installed on the installation plate (313).

3. A double row, multi-point, controlled roll seam welder as defined in claim 2 wherein: the guiding material pressing group (33) consists of a material pressing cylinder (331), a rolling frame (334) and a roller (335); the two rollers (335) are connected to the rolling frame (334) in a shaft way, the rolling frame (334) is arranged below the bottom of the mounting plate (313), the material pressing cylinder (331) is fixedly arranged in the center of the top of the mounting plate (313), the piston rod of the material pressing cylinder (331) is vertically downward, and the lower end of the piston rod of the material pressing cylinder (331) penetrates through a preset connection hole on the mounting plate (313) to be fixedly connected with the rolling frame (334); the material pressing cylinder (331) can drive the rolling frame (334) to move up and down through a piston rod, and drive the roller (335) which is connected to the rolling frame (334) in a shaft connection mode to move up and down synchronously.

4. A double row, multi-point, controlled roll seam welder as defined in claim 3 wherein: the guide pressing group (33) further comprises a guide sleeve (332) and a guide rod (333), wherein the guide sleeve (332) is sleeved outside the guide rod (333) and is in sliding fit with the guide rod (333); the guide sleeves (332) are fixedly connected with preset connecting holes on the mounting plates (313) through bolts, two guide sleeves (332) are arranged on each mounting plate (313), the two guide sleeves (332) are respectively arranged on the left side and the right side of the material pressing cylinder (331), and each guide sleeve (332) is matched with one guide rod (333).

5. A double row, multi-point, controlled roll seam welder as defined in claim 1 wherein: the material pressing device (3) is provided with two groups, and the bottoms of the two groups are connected together through a supporting seat (32); the two groups of material pressing devices (3) are symmetrically arranged on the front side and the rear side of the cross beam (2), a distance is reserved between the two groups of material pressing devices, and laser welding heads (211) on the Z-axis module (21) are located in the distance between the front group of material pressing devices (3) and the rear group of material pressing devices and are not interfered with each other.

6. A double row, multi-point, controlled roll seam welder as defined in claim 1 wherein: the welding bench is characterized in that a plurality of groups of clamps (4) are arranged at the part, close to the front end, of the top of the welding bench (1) and at the part, close to one side of the welding bench, wherein the plurality of groups of clamps (4) arranged at the part, close to the front end, of the top of the welding bench (1) are transversely arranged at equal intervals, and the plurality of groups of clamps (4) arranged at the front and rear sides, close to one side of the welding bench (1), of the welding bench are arranged at equal intervals.

7. The double row, multi-point, controlled roll seam welder of claim 6, wherein: the clamp (4) comprises a base (41), a clamping cylinder (42) with a piston rod vertically upwards is arranged on the back surface of the base (41), a clamping plate (43) is connected to the top of the clamping cylinder (42) in a shaft mode, the rear end of the clamping plate (43) is hinged to the top of the piston rod of the clamping cylinder (42), and a clamping head (431) is connected to the lower end of the front end in a shaft mode.