阅读说明：本技术 一种激光滚压随焊装置 (Laser rolling welding-following device ) 是由 黄婷 康鸿锐 肖荣诗 徐洁洁 武强 于 2021-09-27 设计创作，主要内容包括：本发明公开一种激光滚压随焊装置,包括机床连接板、滑动板、压紧轮组件、预紧轮组件和激光头焊接系统；滑动板滑动安装于机床连接板上,压紧轮组件包括压力传导系统、压紧轮支架和压紧轮,压力传导系统包括直线滚珠导套、支架连接杆和压缩弹簧,直线滚珠导套滑动安装于滑动板,支架连接杆贯穿直线滚珠导套后与压紧轮支架连接,支架连接杆的外部套设压缩弹簧,压紧轮转动安装于压紧轮支架上,预紧轮组件包括预紧压轮支架和预紧轮；激光头焊接系统包括激光发射组件和激光头背座支架。本发明能够在不提前对待焊工件进行预压紧的情况下实现随焊压紧,减少了整个工艺流程的时间,从而解决了目前激光焊接工装生产效率低的问题。(The invention discloses a laser rolling welding-following device, which comprises a machine tool connecting plate, a sliding plate, a pressing wheel assembly, a pre-tightening wheel assembly and a laser head welding system, wherein the machine tool connecting plate is fixedly connected with the machine tool connecting plate; the pressing wheel assembly comprises a pressure conduction system, a pressing wheel support and a pressing wheel, the pressure conduction system comprises a linear ball guide sleeve, a support connecting rod and a compression spring, the linear ball guide sleeve is slidably mounted on the sliding plate, the support connecting rod penetrates through the linear ball guide sleeve and then is connected with the pressing wheel support, the compression spring is sleeved outside the support connecting rod, the pressing wheel is rotatably mounted on the pressing wheel support, and the pre-tightening wheel assembly comprises a pre-tightening pressing wheel support and a pre-tightening wheel; the laser head welding system comprises a laser emitting assembly and a laser head back seat support. The invention can realize the compaction along with welding under the condition of not pre-compacting the workpiece to be welded in advance, and reduces the time of the whole process flow, thereby solving the problem of low production efficiency of the existing laser welding tool.)

1. The utility model provides a laser roll extrusion is along with welding device which characterized in that includes:

connecting a machine tool board;

a slide plate slidably mounted on the machine tool attachment plate, the slide plate being slidable in a first direction relative to the machine tool attachment plate;

the pressing wheel assembly comprises a pressure conduction system, a pressing wheel bracket and a pressing wheel; the pressure conduction system comprises a linear ball guide sleeve, a support connecting rod and a compression spring, the linear ball guide sleeve is slidably mounted on the sliding plate, the linear ball guide sleeve can slide along a second direction relative to the sliding plate, the support connecting rod penetrates through the linear ball guide sleeve and then is connected with the pinch roller support, the compression spring is sleeved outside the support connecting rod, two ends of the compression spring respectively abut against the linear ball guide sleeve and the pinch roller support, and the pinch roller is rotatably mounted on the pinch roller support; in the welding process, the pressing wheel can be always pressed above the piece to be welded under the action of the pressure conduction system;

the pre-tightening wheel assembly comprises a pre-tightening pinch roller bracket and a pre-tightening wheel rotatably arranged on the pre-tightening pinch roller bracket, and the pre-tightening pinch roller bracket is arranged on the sliding plate; the pre-tightening wheel assembly is arranged in front of and/or behind the pressing wheel assembly along the second direction; the pre-tightening wheel assembly can be pressed above the piece to be welded;

the laser head welding system comprises a laser emitting assembly and a laser head back seat support, the laser head back seat support is slidably mounted on the sliding plate, the laser emitting assembly is slidably mounted on the laser head back seat support, and the laser emitting assembly can slide along a third direction relative to the laser head back seat support;

the second direction is the welding trend of the laser emission assembly, and the second direction, the first direction and the third direction are mutually perpendicular in pairs.

2. The laser rolling welding-on-rolling device according to claim 1, wherein a guide rail arranged along the first direction is mounted on the machine tool connecting plate, a sliding block is fixedly arranged on the sliding plate, and the sliding plate is slidably connected with the guide rail through the sliding block; the sliding plate is connected with a driving mechanism, and the driving mechanism is used for driving the sliding plate to slide along the guide rail.

3. The laser rolling follow-up welding device according to claim 1 or 2, wherein the sliding plate is provided with a linear ball guide sliding groove arranged along the second direction, and the linear ball guide is movably connected with the linear ball guide sliding groove and fixed in position by a bolt pair.

4. The laser rolling welding-on-rolling device according to claim 1 or 2, wherein the sliding plate is provided with a laser head back seat support sliding groove arranged along the first direction, and the laser head back seat support is movably connected with the laser head back seat support sliding groove and fixed in position through a bolt pair.

5. The laser roll-on-weld device of claim 1 or 2, wherein the pre-tensioning wheel assemblies are mounted in front of and behind the pinch wheel assemblies in the second direction; wherein the content of the first and second substances,

the pre-tightening wheel assembly positioned in front of the pinch roller assembly is arranged on the sliding plate through a sliding rod support, the sliding rod support is arranged in parallel to the second direction, and the pre-tightening wheel assembly positioned in front of the pinch roller assembly is connected with the sliding rod support in a sliding manner;

the pre-tightening wheel assembly positioned behind the pinch roller assembly is fixedly arranged on the sliding plate.

6. The laser roll welding apparatus of claim 5 wherein one end of the slide bar bracket is fixed to the slide plate and the other end extends beyond the slide plate, and the outwardly extending end of the slide bar bracket is located below the laser head back support.

7. The laser rolling and welding-on-rolling device according to claim 5, wherein the laser emitting assembly comprises a collimating mirror and a beam shaping mechanism connected with the collimating mirror, and the light path shaping mechanism can project laser emitted by the collimating mirror between the pinch roller assembly and the pre-tightening wheel assembly in front of the pinch roller assembly;

a collimating mirror embracing ring is coated on the periphery of the collimating mirror; offer on the laser head back of the body seat support along the laser head back of the body seat sliding tray that the third direction set up, the collimating mirror embrace the ring through the laser head back of the body seat with laser head back of the body seat sliding tray sliding connection to through the vice fixed position of bolt.

8. The laser roll welding-on-roll device according to claim 7, wherein the beam shaping mechanism is an integrating mirror capable of converting the laser emitted from the collimating mirror into a square spot and projecting the square spot between the pinch roller assembly and the pre-tightening wheel assembly located in front of the pinch roller assembly.

9. The laser roll welding apparatus according to claim 1 or 2, wherein said laser emitting assembly is located in front of said pinch roller assembly, and a shielding gas nozzle is provided between said pinch roller assembly and said laser emitting assembly; the shielding gas nozzle is arranged on the sliding plate and can spray inert gas to the part to be welded of the part to be welded in the welding process so as to form welding shielding atmosphere at the part to be welded.

10. The laser rolling welding-on-welding device according to claim 1 or 2, wherein the pinch roller comprises a bearing shaft, a bearing and a pinch roller outer ring which are sequentially sleeved from inside to outside; an optical axis penetrates through the bearing shaft, and two ends of the optical axis are used for being connected with the pinch roller bracket;

the structure of the pre-tightening wheel is completely the same as that of the pressing wheel, and two ends of the optical axis in the pre-tightening wheel are used for being connected with the pre-tightening pressing wheel bracket.

Technical Field

The invention belongs to the field of laser manufacturing technology and equipment, relates to welding equipment, and particularly relates to a laser rolling welding-following device.

Background

The laser welding technology has the characteristics of non-contact connection, small heat affected zone and the like, has wide application prospect in the field of automobile industry, can replace the traditional resistance spot welding, and has a joint form of lap welding mostly. However, the conventional laser welding tool needs to pre-press the welded workpiece in advance, for example, in the conventional carbon fiber metal welding, the metal plate to be welded and the upper and lower cloth layers of the carbon fiber layer need to be pre-pressed in advance, and the process needs a certain time, so that the production efficiency is reduced, and the economic benefit is not improved. Therefore, a laser welding head with a pressing device is needed to realize follow-up welding pressing without pre-pressing a workpiece to be welded in advance.

Disclosure of Invention

The invention aims to provide a laser rolling and welding-following device which can realize welding-following compaction under the condition that a workpiece to be welded is not pre-compacted in advance, so that the problem that the whole process flow time is prolonged and the production efficiency is reduced because the workpiece to be welded needs to be pre-compacted in advance by the conventional laser welding tool is solved.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a laser rolling welding-following device, comprising:

connecting a machine tool board;

a slide plate slidably mounted on the machine tool attachment plate, the slide plate being slidable in a first direction relative to the machine tool attachment plate;

the pressing wheel assembly comprises a pressure conduction system, a pressing wheel bracket and a pressing wheel; the pressure conduction system comprises a linear ball guide sleeve, a support connecting rod and a compression spring, the linear ball guide sleeve is slidably mounted on the sliding plate, the linear ball guide sleeve can slide along a second direction relative to the sliding plate, the support connecting rod penetrates through the linear ball guide sleeve and then is connected with the pinch roller support, the compression spring is sleeved outside the support connecting rod, two ends of the compression spring respectively abut against the linear ball guide sleeve and the pinch roller support, and the pinch roller is rotatably mounted on the pinch roller support; in the welding process, the pressing wheel can be always pressed above the piece to be welded under the action of the pressure conduction system;

the pre-tightening wheel assembly comprises a pre-tightening pinch roller bracket and a pre-tightening wheel rotatably arranged on the pre-tightening pinch roller bracket, and the pre-tightening pinch roller bracket is arranged on the sliding plate; the pre-tightening wheel assembly is arranged in front of and/or behind the pressing wheel assembly along the second direction; the pre-tightening wheel assembly can be pressed above the piece to be welded;

the laser head welding system comprises a laser emitting assembly and a laser head back seat support, the laser head back seat support is slidably mounted on the sliding plate, the laser emitting assembly is slidably mounted on the laser head back seat support, and the laser emitting assembly can slide along a third direction relative to the laser head back seat support;

the second direction is the welding trend of the laser emission assembly, and the second direction, the first direction and the third direction are mutually perpendicular in pairs.

Optionally, a guide rail arranged along the first direction is mounted on the machine tool connecting plate, a sliding block is fixedly arranged on the sliding plate, and the sliding plate is slidably connected with the guide rail through the sliding block; the sliding plate is connected with a driving mechanism, and the driving mechanism is used for driving the sliding plate to slide along the guide rail.

Optionally, the sliding plate is provided with a linear ball guide sliding groove arranged along the second direction, and the linear ball guide is movably connected with the linear ball guide sliding groove and fixed in position through a bolt pair.

Optionally, the sliding plate is provided with a sliding groove of the laser head back seat support arranged along the first direction, and the laser head back seat support is movably connected with the sliding groove of the laser head back seat support and fixed in position through a bolt pair.

Optionally, the pre-tightening wheel assemblies are mounted in front of and behind the pinch roller assemblies along the second direction; wherein the content of the first and second substances,

the pre-tightening wheel assembly positioned in front of the pinch roller assembly is arranged on the sliding plate through a sliding rod support, the sliding rod support is arranged in parallel to the second direction, and the pre-tightening wheel assembly positioned in front of the pinch roller assembly is connected with the sliding rod support in a sliding manner;

the pre-tightening wheel assembly positioned behind the pinch roller assembly is fixedly arranged on the sliding plate.

Optionally, one end of the slide bar support is fixed to the sliding plate, the other end of the slide bar support extends out of the sliding plate, and the outwardly extending end of the slide bar support is located below the laser head back seat support.

Optionally, the laser emission assembly includes a collimating mirror and a light beam shaping mechanism connected to the collimating mirror, and the light path shaping mechanism can project the laser emitted by the collimating mirror to a position between the pinch roller assembly and the pre-tightening wheel assembly located in front of the pinch roller assembly;

a collimating mirror embracing ring is coated on the periphery of the collimating mirror; offer on the laser head back of the body seat support along the laser head back of the body seat sliding tray that the third direction set up, the collimating mirror embrace the ring through the laser head back of the body seat with laser head back of the body seat sliding tray sliding connection to through the vice fixed position of bolt.

Optionally, the collimating mirror surround comprises a fixed end half ring and a movable end half ring, the fixed end half ring is fixedly connected with the laser head back seat, and the movable end half ring is in butt joint with the fixed end half ring through a bolt so as to coat the collimating mirror.

Optionally, laser head back of the body seat support is L type back of the body seat support, it including be on a parallel with the first backplate of second direction with be on a parallel with the second backplate of third direction, the second backplate with first backplate is connected perpendicularly, first backplate with laser head back of the body seat support sliding tray swing joint to through the vice fixed position of bolt.

Optionally, the beam shaping mechanism is an integrating mirror, and the integrating mirror can convert the laser emitted by the collimating mirror into a square light spot and then project the square light spot to a position between the pinch roller assembly and the pre-tightening wheel assembly located in front of the pinch roller assembly.

Optionally, the laser emission assembly is located in front of the pinch roller assembly, and a protective gas nozzle is arranged between the pinch roller assembly and the laser emission assembly; the shielding gas nozzle is arranged on the sliding plate and can spray inert gas to the part to be welded of the part to be welded in the welding process so as to form welding shielding atmosphere at the part to be welded.

Optionally, the pinch roller comprises a bearing shaft, a bearing and a pinch roller outer ring which are sequentially sleeved from inside to outside; an optical axis penetrates through the bearing shaft, and two ends of the optical axis are used for being connected with the pinch roller bracket;

the structure of the pre-tightening wheel is completely the same as that of the pressing wheel, and two ends of the optical axis in the pre-tightening wheel are used for being connected with the pre-tightening pressing wheel bracket.

Compared with the prior art, the invention has the following technical effects:

the laser rolling and welding-following device provided by the invention can realize welding-following compaction under the condition that the workpieces to be welded are not pre-compacted in advance, namely the workpieces to be welded are overlapped together, the upper layer and the lower layer of the workpieces to be welded can be tightly contacted through the matching of the pre-tightening wheel and the compacting wheel in the welding process, and the time of the whole process flow is reduced, so that the problems that the time of the whole process flow is prolonged and the production efficiency is reduced because the workpieces to be welded need to be pre-compacted in advance in the conventional laser welding tool are solved. Through the pressure conduction system, the pressure of the pinch roller can be kept constant when the height of the welding seam fluctuates, so that the pinch roller and a workpiece to be welded are always kept in contact, and the welding quality is favorably improved. The laser rolling and welding-following device provided by the invention has the advantages of simple structure, easiness in assembly, stable work, high control precision, adjustable pressure of the pressing wheel and strong practicability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an assembly view of a laser rolling and welding-following device capable of achieving welding-following compaction according to an embodiment of the invention;

FIG. 2 is an exploded view of the assembly of the disclosed cylinder system according to an embodiment of the present invention;

FIG. 3 is an exploded view of the assembly of the connecting plate and the guide rail of the machine tool disclosed in the embodiment of the invention;

FIG. 4 is an exploded view of an assembly of the pressure conduction system disclosed in the embodiments of the present invention;

FIG. 5 is an exploded view of the assembly of the pinch roller disclosed in the embodiments of the present invention;

FIG. 6 is an exploded view of an assembly of a laser head welding system as disclosed in an embodiment of the present invention;

fig. 7 is an exploded view of the assembled preloaded wheel assembly disclosed in an embodiment of the present invention.

Wherein the reference numerals are: 100-laser rolling welding-following device, 1-machine tool connecting plate, 2-cylinder fixing block, 3-cylinder, 4-guide rail, 5-cylinder-sliding plate connecting block, 6-slider, 7-sliding plate, 7-1-linear ball guide sleeve sliding groove, 7-2-laser head back seat support sliding groove, 7-3-threaded hole, 7-4-threaded hole, 8-linear ball guide sleeve, 9-support connecting rod, 10-compression spring, 11-pinch roller support, 11-1-through hole, 11-2-threaded hole, 11-3-bearing shaft clamping groove, 12-pinch roller, 12-1-pinch roller outer ring, 12-2-bearing, 12-3-optical axis, 12-4-a bearing shaft, 13-a sliding rod support, 14-a pre-tightening pinch roller support, 14-1-a sliding groove, 14-2 bearing shaft clamping grooves, 15-an integrating mirror, 16-a protective gas nozzle, 17-a collimating mirror embracing ring, 17-1-a fixed end semi-ring, 17-2-a movable end semi-ring, 18-a laser head back seat, 19-a laser head back seat support, 19-1-a laser head back seat sliding groove, 19-2-a threaded hole and 20-a collimating mirror.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

One of the purposes of the invention is to provide a laser rolling welding-following device, which can realize welding-following compaction under the condition of not pre-compacting a welded workpiece in advance, so as to solve the problem that the whole process flow time is prolonged and the production efficiency is reduced because the welded workpiece needs to be pre-compacted in advance by the existing laser welding tool.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Example one

As shown in fig. 1-7, the present embodiment provides a laser rolling welding-following device 100, which mainly comprises a machine tool connecting plate 1, an air cylinder system, a sliding plate 7, a pressing wheel assembly, a pre-tightening wheel assembly and a laser head welding system. Wherein:

the machine tool connecting plate 1 is vertically arranged, two linear guide rails 4 are mounted on the surface of the machine tool connecting plate through bolts, and the two guide rails 4 are arranged in parallel at intervals.

The air cylinder system comprises an air cylinder fixing block 2 which is fixed on a machine tool connecting plate 1 through a through hole on the upper end surface; a cylinder 3; and the cylinder-sliding plate connecting block 5 is of an L-shaped structure, the telescopic rod of the cylinder 3 penetrates through the through hole at the upper end of the cylinder fixing block 2 to be connected with the cylinder-sliding plate connecting block 5, and the lower end of the cylinder-sliding plate connecting block 5 is connected with the sliding plate 7.

The surface of the sliding plate 7 is provided with a linear ball guide sleeve sliding groove 7-1 for realizing the sliding of the pinch roller component along the Y-axis direction, a laser head back seat support sliding groove 7-2 for realizing the sliding of a laser head welding system along the Z-axis direction and threaded holes 7-3 and 7-4 for respectively installing a front pre-tightening pinch roller support 14 and a rear pre-tightening pinch roller support 14; the back of the sliding plate 7 is provided with four sliding blocks 6, the four sliding blocks 6 are distributed in two rows, and each row is respectively in sliding fit with one guide rail 4.

The pinch roller assembly comprises a pinch roller bracket 11, a pinch roller 12 and a pressure conduction system. The pressure conduction system comprises a linear ball guide sleeve 8, a support connecting rod 9 and a compression spring 10, wherein guide sleeves are arranged at two ends of the compression spring 10, the linear ball guide sleeve 8 is arranged on a linear ball guide sleeve sliding groove 7-1 on the surface of a sliding plate 7 through a bolt pair (namely a bolt matched with a nut), an upper guide sleeve of the compression spring 10 is in plane contact with the lower end of the linear ball guide sleeve 8, and a lower guide sleeve of the compression spring 10 is connected with a pinch roller support 11 through a bolt. The upper surface of the pinch roller bracket 11 is provided with a through hole 11-1 and a threaded hole 11-2, and the side surface is provided with a bearing shaft clamping groove 11-3; the support connecting rod 9 passes through the linear ball guide sleeve 8, the compression spring 10 and the through hole 11-1 in sequence to be connected with the pinch roller support 11. The pinch roller 12 comprises a pinch roller outer ring 12-1, a bearing 12-2, an optical axis 12-3 and a bearing shaft 12-4, the bearing 12-2 is clamped in the pinch roller outer ring 12-1 and is clamped in the middle of the optical axis 12-3, the optical axis 12-3 is clamped in the middle of the bearing shaft 12-4, two ends of the optical axis 12-3 are in contact with the inner wall of the pinch roller bracket 11, and the bearing shaft 12-4 is connected with the pinch roller bracket 11 through a bearing shaft clamping groove 11-3. The two ends of the bearing shaft 12-4 are provided with threads, and the bearing shaft can be fixed on the pinch roller bracket 11 through matching with corresponding bolts. In the welding process, the pressing wheel 12 can be always pressed above the part to be welded under the action of the pressure conduction system, so that the pressure can be kept constant when the height of a welding seam fluctuates, and the adjustable range of the pressure is wide.

The laser head welding system comprises a laser head back seat support 19 which is an L-shaped back seat support and comprises a first back plate and a second back plate, the second back plate is vertically connected with the first back plate, the first back plate is arranged on a laser head back seat support sliding groove 7-2 on the surface of the sliding plate 7 through a threaded hole 19-2, and a laser head back seat sliding groove 19-1 for realizing the sliding of a laser head back seat 18 along the X-axis direction is formed in the side surface of the first back plate; a laser head back seat 18 which is arranged on the laser head back seat sliding groove 19-1; the collimating mirror embracing ring 17 comprises a fixed end semi-ring 17-1 and a movable end semi-ring 17-2, wherein the fixed end semi-ring 17-1 is connected with a laser head back seat 18, and the movable end semi-ring 17-2 is in butt joint with the fixed end semi-ring 17-1 through a bolt so as to cover the collimating mirror 20; the collimating mirror 20 is clamped in the collimating mirror embracing ring 17, and the collimating mirror 20 can freely rotate by changing the fastening degree between the fixed end half ring 17-1 and the movable end half ring 17-2; an integrating mirror 15 connected to the collimating mirror 20; a shielding gas nozzle 16, which can be connected to the integrator 15 or the slide plate 7. Preferably, the shielding gas nozzle 16 may be mounted on the integrating mirror 15.

The pre-tightening wheel component comprises a sliding rod bracket 13 arranged along the Y axis, the surface of the sliding rod bracket is provided with a sliding groove arranged along the Y axis, and the sliding rod bracket is arranged on the surface of the sliding plate 7 through a threaded hole 7-3; the side surfaces of any pre-tightening pinch roller supports 14 are provided with sliding grooves 14-1 and bearing shaft clamping grooves 14-2, one pre-tightening pinch roller support is connected with a sliding rod support 13 through the sliding groove 14-1 to serve as a front pre-tightening pinch roller support, and the other pre-tightening pinch roller support is installed on the surface of a sliding plate 7 through the sliding groove 14-1 to serve as a rear pre-tightening pinch roller support. Any pre-tightening pinch roller bracket 14 is provided with a pre-tightening wheel, the structure of the pre-tightening wheel is completely the same as that of the pinch roller 12, and the installation mode of the pre-tightening wheel and the pre-tightening pinch roller bracket 14 is the same as that of the pinch roller 12 and the pinch roller bracket 11, which is not described again here. The pre-tightening wheels in the front pre-tightening wheel assembly and the rear pre-tightening wheel assembly can be tightly pressed above the part to be welded, and the front pre-tightening wheel assembly (pre-tightening pinch wheel bracket) is positioned in front of the pressing wheel assembly (on the right side in the figure 1) and is mainly used for pre-tightening the part of the part to be welded, which does not reach the pressing wheel assembly; similarly, the term "rear" means that the pre-tightening wheel assembly (pre-tightening pinch roller bracket) is positioned behind the pinch roller assembly (on the left side shown in fig. 1), and mainly compresses the part of the workpiece to be welded, which has been welded and passes through the pinch roller assembly, so that the welded part can be prevented from deforming, and the welding quality can be improved. In this embodiment, at least one set of pre-tightening wheel assemblies may be respectively disposed in front of and behind the pressing wheel assembly, and at least one set of pressing wheel assembly may be disposed.

In the present embodiment, the "Y direction" at each position refers to a direction, i.e., the welding direction of the workpiece to be welded (i.e., the extending direction of the formed weld), and in the present embodiment, the direction may be specifically the left and right direction shown in fig. 1; correspondingly, the "X direction" and the "Z direction" (corresponding to the aforementioned first direction) "at each position also refer to a direction, and the" X direction "," Y direction "and" Z direction "are mutually perpendicular in pairs, wherein the" X direction "may be a front-back direction shown in fig. 1, and the" Z direction "may be an up-down direction shown in fig. 1. In the laser rolling welding-following device 100, the track 4, the laser head back seat support sliding groove 7-2 and the sliding groove 14-1 are all arranged along the 'Z direction' (corresponding to the first direction), the linear ball guide sleeve sliding groove 7-1, the sliding rod support 13 and the sliding groove thereon are all arranged along the 'Y direction' (corresponding to the second direction), and the laser head back seat sliding groove 19-1 is arranged along the 'X direction' (corresponding to the third direction). The heave direction of the pinch roller 12 in the pinch roller assembly, and the extension and retraction direction of the piston rod in the cylinder 3 are also in the "Z direction" described above.

In this embodiment, the cylinder system is mainly used to drive the sliding plate 7 and the upper component thereof to slide and adjust along the "Z direction" (corresponding to the first direction), and in actual operation, the screw nut component, the rack and pinion component, the hydraulic cylinder and other replacement cylinder systems can be used to perform lifting (up and down) adjustment on the sliding plate 7.

In this embodiment, the sliding rod support 13 and the laser head back seat support 19 are installed on the same side of the sliding plate 7, for example, on the "right side" shown in fig. 1, one end of the sliding rod support 13 is fixed to the sliding plate 7, the other end extends out of the sliding plate 7, and the outward extending end of the sliding rod support 13 is located right below the laser head back seat support 19. One end of the sliding rod bracket 13 extends out of the sliding plate 7, so that the Y-direction adjusting range of the front pre-tightening wheel assembly can be expanded.

In this embodiment, the laser emission assembly in the laser head welding system includes collimating mirror 20 and integrator 15 connected with collimating mirror 20, existing laser emission equipment is connected to collimating mirror 20, integrator 15 not only can change the transmission route of the laser that collimating mirror 20 launches as common beam shaping mechanism, but also can turn into square (rectangle) facula with the circular facula that collimating mirror 20 launches, the rectangle facula that laser head welding system launches throws to pinch roller subassembly and the pretension wheel subassembly that is located pinch roller subassembly the place ahead between, accomplish the welding to this section work piece that waits to weld. For example, in the welding work of metal and composite materials (such as carbon fiber prepreg), the energy density distribution of square (rectangular) light spots is more uniform, the temperature of the square (rectangular) light spots is lower than the evaporation threshold of a welding material (metal plate), and the deep melting can be effectively inhibited (or called as difficult deep melting formation), so that the welding quality is improved. The operation principle of the integrator 15 is the prior art, and is not described herein.

In this embodiment, the shielding gas nozzle is connected to an inert gas source, and is capable of spraying an inert gas (such as nitrogen gas, helium gas, etc.) to the to-be-welded part of the to-be-welded part during welding to form a welding shielding atmosphere at the to-be-welded part.

In this embodiment, the machine tool connecting plate 1 is used for connecting to relevant welding equipment such as a machine tool. In practical operation, the laser rolling connection device and the workpiece to be welded make relative movement, and a mode of driving the laser rolling connection device to move and the workpiece to be welded to be stationary, a mode of driving the laser rolling connection device to be stationary and the workpiece to be welded to move, or a mode of driving the laser rolling connection device and the workpiece to be welded to make relative movement at the same time can be adopted.

In this embodiment, the compression spring 10 is preferably a cylindrical helical compression spring with a circular cross section, and is made of a D-grade carbon spring steel wire (GB/T4357, with an elastic modulus of 206GPa), and the upper and lower ends thereof are provided with guide sleeves, which are respectively connected to the lower end plane of the linear ball guide sleeve 8 and the upper end plane of the pinch roller support 11, so as to achieve uniform distribution of pressure along the Z-axis direction and prevent the compression spring from deforming along the X-Y direction. The pressure value applied to the surface of the workpiece to be welded can be calculated by measuring the deformation amount of the compression spring during the welding process.

Therefore, the laser rolling connection device capable of realizing compaction along with welding provided by the invention solves the problem that the time of the whole process flow is prolonged because the common laser welding tool needs to pre-compact the welded workpiece in advance at present, and can improve the production efficiency. In addition, the pressure transmission system is connected to the pressing wheel, so that constant pressure holding can be kept on the welding piece when the height of the welding line fluctuates, and the adjustable range of the pressure is wide. An air cylinder system is arranged between the machine tool connecting plate and the pressure transmission system, wherein the air cylinder has a flexible rigidity effect, and when the height of a welding seam fluctuates, the good contact between the pressing wheel and the welding seam can be ensured. Therefore, the laser rolling welding-following device provided by the invention has the advantages of simple structure, reasonable design, easiness in assembly, stability in working, high control precision, good controllability, adjustable pressure of the pressing wheel, convenience in operation and use and strong practicability.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.