CN210587661U - Laser welding device - Google Patents

Abstract

The utility model relates to the technical field of accessories of welding equipment, in particular to a laser welding device, which is additionally provided with a fixing mechanism to position two groups of welded workpieces, thereby reducing the risk that the hand skin of a worker is burnt by laser, and simultaneously reducing the probability that the hand of the worker touches a welding part, thereby reducing the probability that the hand is burnt; the device comprises a laser generating mechanism, a laser head assembly, a microscopic observation mechanism, a placing table and four groups of supporting legs; the adjustable safety device is characterized by further comprising a telescopic rod, a control ring, a fastening threaded rod, a fastening knob, an adjusting plate, a driving plate, an adjusting threaded rod, two groups of limiting rings, two groups of protective rods, an adjusting handle, a first fixing plate, a first extrusion plate, a sliding plate, a control threaded rod, a control knob, a supporting block, a second fixing plate, a second extrusion plate, a fastening threaded rod, a fastening handle and a rotating plate, wherein a telescopic groove is formed in the left side of the top end of the placing table.

Description

Laser welding device

Technical Field

The utility model relates to a welding equipment auxiliary device's technical field especially relates to a laser welding device.

Background

As is well known, laser welding is an efficient and precise welding method using a laser beam with high energy density as a heat source, and a laser welding apparatus is an apparatus for welding a workpiece using a laser welding process, and is widely used in the field of workpiece welding; the existing laser welding device comprises a laser generating mechanism, a laser head assembly, a microscopic observation mechanism, a placing table and four groups of supporting legs, wherein the top ends of the four groups of supporting legs are respectively connected with the left front side, the left rear side, the right front side and the right rear side of the bottom end of the laser generating mechanism; when the existing laser welding device is used, firstly, the existing laser welding device is purchased in the market, then the existing laser welding device is placed at a specified position through four groups of supporting legs and is switched on, then a laser generating mechanism is started, then a worker moves a welding part of a workpiece to be welded to be under the output end of a laser head assembly, and the workpiece is welded by observing the laser head assembly through a microscopic observation mechanism; present laser welding device uses the discovery, and when the staff passed through the position of the fixed two sets of welding workpiece of hand, staff's hand had the risk by the burn, and the work piece that the welding has just finished in addition, and surface temperature is very high, in case staff's hand touches the welding part, then staff's hand is higher by the probability of burning to lead to the practicality relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an it fixes a position two sets of work pieces of welding to have add fixed establishment, has consequently reduced staff's hand skin by the risk of laser burn, has reduced staff's hand simultaneously and has touched the probability at welding position, therefore has reduced the probability that the hand is burnt to strengthen the laser welding device of practicality.

The utility model discloses a laser welding device, including laser generation mechanism, laser head subassembly, microscopic observation mechanism, place platform and four groups of landing legs, the top of four groups of landing legs is connected with the left front side of bottom, left rear side, right front side and the right rear side of laser generation mechanism respectively, place the platform and install at the regional top in front of laser generation mechanism, the laser head subassembly is installed on the top of laser generation mechanism, the input of laser head subassembly and the output of laser generation mechanism communicate, microscopic observation mechanism installs in the top front of laser generation mechanism, the bottom observation end of microscopic observation mechanism is located and places the platform directly over; the novel multifunctional shelf is characterized by further comprising a telescopic rod, a control ring, a fastening threaded rod, a fastening knob, an adjusting plate, a driving plate, an adjusting threaded rod, two groups of limiting rings, two groups of protective rods, an adjusting handle, a first fixing plate, a first extrusion plate, a sliding plate, a control threaded rod, a control knob, a supporting block, a second fixing plate, a second extrusion plate, a fastening threaded rod, a fastening handle and a rotating plate, wherein a telescopic groove is formed in the left side of the top end of the placement platform and is slidably clamped with the telescopic rod, the control ring is rotatably sleeved with the telescopic rod, a fastening threaded hole penetrates through the left end of the inner side wall of the control ring, the fastening threaded hole is screwed with the fastening threaded rod, the left end of the fastening threaded rod is connected with the right end of the fastening knob, a connecting assembly is arranged at the right end of the fastening threaded rod, the right end of the connecting assembly, the middle part of the left end of the sliding plate is provided with a control threaded hole in a penetrating way, the top part of the left end of the placing table is provided with a control groove, the right end of the control threaded rod penetrates through the control threaded hole in a threaded way from the left side of the sliding plate and then is continuously inserted into the control groove, the right end of the control threaded rod is tightly attached to the right end of the control groove, the left end of the control threaded rod is connected with the right end of a control knob, the bottom end of an adjusting plate is connected with the top end of a telescopic rod, the top end of the adjusting plate is connected with the bottom end of a first fixing plate, the middle part of the front end of the adjusting plate is provided with an adjusting threaded hole in a penetrating way, the left side and the right side of the front end of the adjusting plate are respectively provided with two groups of protective holes in a penetrating way, the top end, the two groups of limiting rings are fixedly sleeved with the front area of the adjusting threaded rod, the inner ends of the two groups of limiting rings are respectively and rotatably attached to the front end and the rear end of the driving plate, the front ends of the two groups of protective rods are respectively connected with the left side and the right side of the rear end of the driving plate, the adjusting threaded holes are screwed with the adjusting threaded rod, the two groups of protective holes are respectively and slidably sleeved with the two groups of protective rods, the rear end of the adjusting handle is connected with the front end of the adjusting threaded rod, the bottom end and the top rear side of the supporting block are respectively connected with the top right side of the placing table and the bottom end of the second fixing plate, a rotating cavity is arranged in the bottom area of the second fixing plate, the front end of the rotating cavity is communicated with an insertion hole, a positioning threaded hole is arranged in the bottom area of the front end of the second extrusion plate in a penetrating manner, and the rear end of the fastening, the rear end of the fastening threaded rod is connected with the front end of the rotating plate, the rotating plate is rotatably clamped with the rotating cavity, the positioning threaded hole is screwed with the fastening threaded rod, the front end of the fastening threaded rod is connected with the rear end of the fastening handle, and the bottom end of the second extrusion plate is in sliding and clinging contact with the top end of the supporting block.

The utility model discloses a laser welding device, the circumference lateral wall of fastening knob and control knob all is provided with the multiunit non slipping spur.

The utility model discloses a laser welding device still includes the baffle, the front end of baffle and adjusting threaded rod's rear end are connected.

The utility model discloses a laser welding device, coupling assembling includes the block rubber, the left end of block rubber is connected with the right-hand member of fastening threaded rod, the right-hand member of block rubber is hugged closely with the left end of telescopic link.

The utility model discloses a laser welding device, the right part region of control tank is provided with the antislip strip, the right-hand member of control threaded rod is hugged closely with the left end of antislip strip.

The utility model discloses a laser welding device still includes two sets of rotating rings and two sets of protection pieces, two sets of rotating rings rotate the suit with the handheld position of adjustment handle and fastening handle respectively, two sets of protection pieces are installed respectively at the front end of adjustment handle and fastening handle.

The utility model discloses a laser welding device, the inner of first fixed plate and first stripper plate and the inner of second fixed plate and second stripper plate all are provided with two sets of anti-skidding backing plates.

The utility model discloses a laser welding device still is including controlling the handle, the left end of controlling the handle is connected with the right-hand member of control ring.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, a group of workpieces are placed between a second fixing plate and a second extrusion plate, then a positioning threaded rod is rotated by a fastening handle to enable the positioning threaded rod to rotate in a positioning threaded hole of the second extrusion plate, at the moment, the second extrusion plate moves close to the second fixing plate until the group of workpieces are clamped between the second fixing plate and the second extrusion plate, then a worker places another group of workpieces between the second fixing plate and the first extrusion plate, at the moment, the two groups of limiting rings, a driving plate, an adjusting plate and two groups of protection rods are matched to drive the first extrusion plate to move close to the first fixing plate by rotating the adjusting threaded rod through adjusting the handle until the first fixing plate and the first extrusion plate clamp the group of workpieces, at the moment, the worker adjusts the position between the first fixing plate and the first extrusion plate, and can realize the rotation and height adjustment of the workpieces under the matching of an expansion link and a control ring, and at the control ring, the telescopic link, the back-and-forth movement of work piece can be realized under the cooperation of sliding plate and control flume, can dock the welding position of two sets of work pieces through above-mentioned regulation, after the butt joint, the staff screws fastening threaded rod and control threaded rod respectively through fastening knob and control knob, at this moment the position of two sets of work pieces just is fixed, then alright with carrying out the laser welding operation with the hand of need not the staff, thereby two sets of work pieces that come to weld through having add fixed establishment fix a position, consequently, the risk that staff's hand skin is burnt by laser has been reduced, the probability that the welding position was touched to staff's hand has been reduced simultaneously, therefore, the probability that the hand was burnt has been reduced, thereby the reinforcing practicality.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of a partially enlarged structure of a;

fig. 3 is a schematic view of a connection structure of the first fixing plate and the adjusting threaded rod of the present invention;

FIG. 4 is a schematic view of the connection structure of the driving plate and the adjusting threaded rod of the present invention;

fig. 5 is a schematic view of a connection structure of a second fixing plate and a positioning threaded rod according to the present invention;

FIG. 6 is a schematic view of the connection structure of the placement platform and the telescopic rod of the present invention;

fig. 7 is a schematic view of the connection structure of the laser emitting mechanism and the microscopic observation mechanism of the present invention;

in the drawings, the reference numbers: 1. a laser generating mechanism; 2. a laser head assembly; 3. a microscopic observation mechanism; 4. a placing table; 5. four groups of supporting legs; 6. a telescopic rod; 7. a control loop; 8. fastening a threaded rod; 9. fastening a knob; 10. an adjusting plate; 11. driving the plate; 12. adjusting the threaded rod; 13. two sets of limit rings; 14. two groups of guard bars; 15. adjusting the handle; 16. a first fixing plate; 17. a first squeeze plate; 18. a sliding plate; 19. controlling the threaded rod; 20. a control knob; 21. a support block; 22. a second fixing plate; 23. a second compression plate; 24. positioning a threaded rod; 25. fastening a handle; 26. a rotating plate; 27. a plurality of groups of anti-skid blocks; 28. a baffle plate; 29. a rubber block; 30. anti-slip strips; 31. two groups of rotating rings; 32. two groups of protection blocks; 33. two sets of anti-skid backing plates; 34. a control handle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 7, the laser welding device of the present invention comprises a laser generating mechanism 1, a laser head assembly 2, a microscopic observing mechanism 3, a placing table 4 and four groups of supporting legs 5, wherein the top ends of the four groups of supporting legs 5 are respectively connected with the left front side, the left rear side, the right front side and the right rear side of the bottom end of the laser generating mechanism 1, the placing table 4 is installed at the top end of the front region of the laser generating mechanism 1, the laser head assembly 2 is installed at the top end of the laser generating mechanism 1, the input end of the laser head assembly 2 is communicated with the output end of the laser generating mechanism 1, the microscopic observing mechanism 3 is installed at the front side of the top end of the laser generating mechanism 1, and the bottom observing end of the microscopic observing mechanism 3 is located; the device also comprises a telescopic rod 6, a control ring 7, a fastening threaded rod 8, a fastening knob 9, an adjusting plate 10, a driving plate 11, an adjusting threaded rod 12, two groups of limit rings 13, two groups of guard rods 14, an adjusting handle 15, a first fixing plate 16, a first extrusion plate 17, a sliding plate 18, a control threaded rod 19, a control knob 20, a supporting block 21, a second fixing plate 22, a second extrusion plate 23, a positioning threaded rod 24, a fastening handle 25 and a rotating plate 26, wherein the left side of the top end of the placing table 4 is provided with a telescopic groove which is slidably clamped with the telescopic rod 6, the control ring 7 is rotatably sleeved with the telescopic rod 6, the left end of the inner side wall of the control ring 7 is provided with a fastening threaded hole in a penetrating manner, the fastening threaded hole is screwed with the fastening threaded rod 8, the left end of the fastening threaded rod 8 is connected with the right end of the fastening knob 9, the, the right end of the sliding plate 18 is connected with the bottom area of the left end of the control ring 7, the middle part of the left end of the sliding plate 18 is provided with a control threaded hole in a penetrating way, the top part of the left end of the placing table 4 is provided with a control groove, the right end of the control threaded rod 19 penetrates through the control threaded hole from the left side of the sliding plate 18 in a threaded way and then is continuously inserted into the control groove, the right end of the control threaded rod 19 is clung to the right end of the control groove, the left end of the control threaded rod 19 is connected with the right end of a control knob 20, the bottom end of the adjusting plate 10 is connected with the top end of the telescopic rod 6, the top end of the adjusting plate 10 is connected with the bottom end of the first fixing plate 16, the middle part of the front end of the adjusting plate 10 is provided with an adjusting threaded hole in a penetrating way, the left side and the right, the penetrating holes are rotatably sleeved with the front area of the adjusting threaded rod 12, two groups of limiting rings 13 are fixedly sleeved with the front area of the adjusting threaded rod 12, the inner ends of the two groups of limiting rings 13 are respectively and rotatably attached to the front end and the rear end of the driving plate 11, the front ends of two groups of protective rods 14 are respectively connected with the left side and the right side of the rear end of the driving plate 11, the adjusting threaded holes are screwed with the adjusting threaded rod 12, two groups of protective holes are respectively and slidably sleeved with the two groups of protective rods 14, the rear end of the adjusting handle 15 is connected with the front end of the adjusting threaded rod 12, the bottom end and the top rear side of the supporting block 21 are respectively connected with the top right side of the placing table 4 and the bottom end of the second fixing plate 22, a rotating cavity is arranged in the bottom area of the second fixing plate 22, the front end of the rotating cavity is communicated with an insertion hole, the front end bottom area of the front end of the second extrusion plate 23 is provided with a positioning threaded hole, the rear end of the positioning threaded rod 24 is connected with the front end of the rotating plate 26, the rotating plate 26 is rotatably clamped with the rotating cavity, the positioning threaded hole is screwed with the positioning threaded rod 24, the front end of the positioning threaded rod 24 is connected with the rear end of the fastening handle 25, and the bottom end of the second extrusion plate 23 is in sliding tight fit with the top end of the supporting block 21; firstly, a group of workpieces are placed between a second fixing plate and a second extrusion plate, then a positioning threaded rod is rotated by a fastening handle to enable the positioning threaded rod to rotate in a positioning threaded hole of the second extrusion plate, at the moment, the second extrusion plate moves close to the second fixing plate until the group of workpieces are clamped between the second fixing plate and the second extrusion plate, then a worker places another group of workpieces between the second fixing plate and the first extrusion plate, at the moment, the two groups of limiting rings, a driving plate, an adjusting plate and two groups of protection rods are matched to drive the first extrusion plate to move close to the first fixing plate by rotating the adjusting threaded rod through adjusting the handle until the first fixing plate and the first extrusion plate clamp the group of workpieces, at the moment, the worker adjusts the position between the first fixing plate and the first extrusion plate, and can realize the rotation and height adjustment of the workpieces under the matching of an expansion link and a control ring, and at the control ring, the telescopic link, the back-and-forth movement of work piece can be realized under the cooperation of sliding plate and control flume, can dock the welding position of two sets of work pieces through above-mentioned regulation, after the butt joint, the staff screws fastening threaded rod and control threaded rod respectively through fastening knob and control knob, at this moment the position of two sets of work pieces just is fixed, then alright with carrying out the laser welding operation with the hand of need not the staff, thereby two sets of work pieces that come to weld through having add fixed establishment fix a position, consequently, the risk that staff's hand skin is burnt by laser has been reduced, the probability that the welding position was touched to staff's hand has been reduced simultaneously, therefore, the probability that the hand was burnt has been reduced, thereby the reinforcing practicality.

In the laser welding device of the utility model, the circumferential side walls of the fastening knob 9 and the control knob 20 are provided with a plurality of groups of anti-skid blocks 27; the roughness of fastening knob or control knob circumference lateral wall has been increased through the multiunit non slipping spur, when having reduced rotation fastening knob and control knob, the probability that the hand skidded on fastening knob or control knob to the practicality has been strengthened.

The laser welding device of the utility model also comprises a baffle 28, the front end of the baffle 28 is connected with the rear end of the adjusting threaded rod 12; carry on spacingly through the baffle to adjusting threaded rod, reduced adjusting threaded rod in the adjusting threaded hole's of regulating plate probability that breaks away from to the steadiness has been strengthened.

The utility model discloses a laser welding device, the connecting assembly comprises a rubber block 29, the left end of the rubber block 29 is connected with the right end of a fastening threaded rod 8, and the right end of the rubber block 29 is clung to the left end of a telescopic rod 6; the friction coefficient of the right end of the fastening threaded rod is increased through the rubber block, the probability that the telescopic rod and the fastening threaded rod move relatively when the fastening threaded rod is limited to the telescopic rod is reduced, and therefore the stability is enhanced.

In the laser welding device of the utility model, the right area of the control groove is provided with the antislip strip 30, and the right end of the control threaded rod 19 is closely attached to the left end of the antislip strip 30; the friction force between the control threaded rod and the control groove is increased through the anti-slip strips, and the probability of slipping of the control threaded rod in the control groove is reduced, so that the practicability is enhanced.

The laser welding device of the utility model also comprises two groups of rotating rings 31 and two groups of protecting blocks 32, wherein the two groups of rotating rings 31 are respectively rotatably sleeved with the handheld parts of the adjusting handle 15 and the fastening handle 25, and the two groups of protecting blocks 32 are respectively arranged at the front ends of the adjusting handle 15 and the fastening handle 25; the adjusting handle and the fastening handle are respectively rotated through the two groups of rotating rings, so that the abrasion of the rotating process of the adjusting handle and the fastening handle to the hand is reduced, and the practicability is enhanced.

In the laser welding device of the present invention, two sets of anti-skid backing plates 33 are disposed at the inner ends of the first fixing plate 16 and the first extrusion plate 17 and at the inner ends of the second fixing plate 22 and the second extrusion plate 23; the friction coefficient of the inner side wall of the first fixing plate, the second fixing plate, the first extrusion plate and the second extrusion plate is increased through the anti-skidding base plate, the probability that a workpiece slips between the first fixing plate and the first extrusion plate or between the second fixing plate and the second extrusion plate is reduced, and therefore the stability is enhanced.

The laser welding device of the utility model also comprises a control handle 34, and the left end of the control handle 34 is connected with the right end of the control ring 7; the control ring can be adjusted more conveniently by controlling the handle, so that convenience is enhanced.

The utility model discloses a laser welding device, it is at work, purchase current laser welding device in the market at first, then place it in appointed position and switch on power through four groups of landing legs, at this moment start laser generating mechanism, then place a set of work piece between second fixed plate and second stripper plate, at this moment make positioning threaded rod rotate in the positioning threaded hole of second stripper plate through fastening handle rotation positioning threaded rod, at this moment the second stripper plate just moves near the second fixed plate, until chucking this set of work piece between second fixed plate and second stripper plate, then the staff is placing another set of work piece between second fixed plate and first stripper plate, at this moment make two sets of spacing rings, drive the board, regulating plate and two sets of fender rods cooperate and drive first stripper plate and be close to the removal to first fixed plate through adjusting handle rotation adjusting threaded rod, until the first fixing plate and the first extrusion plate clamp the group of workpieces, the worker adjusts the position between the first fixing plate and the first extrusion plate, the rotation and height adjustment of the workpieces can be realized under the matching of the telescopic rod and the control ring, the front and back movement of the workpieces can be realized under the matching of the control ring, the telescopic rod, the sliding plate and the control groove, the welding parts of the two groups of workpieces can be butted through the adjustment, after butt joint, the worker respectively screws the fastening threaded rod and the control threaded rod through the fastening knob and the control knob, the positions of the two groups of workpieces are fixed, then alright need not the staff and hand to carry out the laser welding operation, this moment the staff then through the microscopic observation mechanism observe the laser head subassembly weld workpiece can, the welded in-process, the staff can come to remove the laser head subassembly and adjust the welding position.

The terms "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only.

In the present invention, "first", "second" and "third" do not represent specific quantities or sequences, but are merely used for distinguishing names.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A laser welding device comprises a laser generating mechanism (1), a laser head assembly (2), a microscopic observation mechanism (3), a placing table (4) and four groups of supporting legs (5), wherein the top ends of the four groups of supporting legs (5) are respectively connected with the left front side, the left rear side, the right front side and the right rear side of the bottom end of the laser generating mechanism (1), the placing table (4) is installed at the top end of the front area of the laser generating mechanism (1), the laser head assembly (2) is installed at the top end of the laser generating mechanism (1), the input end of the laser head assembly (2) is communicated with the output end of the laser generating mechanism (1), the microscopic observation mechanism (3) is installed at the front side of the top end of the laser generating mechanism (1), and the bottom observation end of the microscopic observation mechanism (3) is located right above the placing table (4); the device is characterized by further comprising a telescopic rod (6), a control ring (7), a fastening threaded rod (8), a fastening knob (9), an adjusting plate (10), a driving plate (11), an adjusting threaded rod (12), two sets of limiting rings (13), two sets of protective rods (14), an adjusting handle (15), a first fixing plate (16), a first extrusion plate (17), a sliding plate (18), a control threaded rod (19), a control knob (20), a supporting block (21), a second fixing plate (22), a second extrusion plate (23), a positioning threaded rod (24), a fastening handle (25) and a rotating plate (26), wherein a telescopic groove is formed in the left side of the top end of the placing table (4), the telescopic groove and the telescopic rod (6) are slidably clamped, the control ring (7) and the telescopic rod (6) are rotatably sleeved, and a fastening threaded hole is formed in the left end of the inner side wall of the control ring (7) in, the left end of the fastening threaded rod (8) is connected with the right end of a fastening knob (9), the right end of the fastening threaded rod (8) is provided with a connecting assembly, the right end of the connecting assembly is tightly attached to the left end of a telescopic rod (6), the right end of a sliding plate (18) is connected with the bottom area of the left end of a control ring (7), the middle part of the left end of the sliding plate (18) is provided with a control threaded hole in a penetrating manner, the top part of the left end of the placing table (4) is provided with a control groove, the right end of a control threaded rod (19) is tightly attached to the right end of the control groove, the left end of the control threaded rod (19) is connected with the right end of a control knob (20), the bottom end of an adjusting plate (10) is connected with the top end of the telescopic rod (6), the top end of the adjusting plate (10) is connected with the bottom end of the first fixing plate (16), an adjusting threaded hole is arranged in the middle of the front end of the adjusting plate (10) in a penetrating mode, two groups of protection holes are arranged on the left side and the right side of the front end of the adjusting plate (10) in a penetrating mode respectively in a penetrating mode, the top end of the driving plate (11) is connected with the lower end of the first extrusion plate (17), a penetrating hole is arranged in the middle of the front end of the driving plate (11) in a penetrating mode and is in rotating sleeved connection with the front area of the adjusting threaded rod (12), two groups of limiting rings (13) are in fixed sleeved connection with the front area of the adjusting threaded rod (12), the inner ends of the two groups of limiting rings (13) are in rotating tight fit with the front end and the rear end of the driving plate (11) respectively, the front ends of the two groups of protection rods (14) are connected with the left side and the right side of, the two groups of protection holes are respectively sleeved with two groups of protection rods (14) in a sliding mode, the rear end of an adjusting handle (15) is connected with the front end of an adjusting threaded rod (12), the bottom end and the top rear side of a supporting block (21) are respectively connected with the top right side of a placing table (4) and the bottom end of a second fixing plate (22), a rotating cavity is arranged inside the bottom area of the second fixing plate (22), an insertion hole is formed in the front end of the rotating cavity in a communicating mode, a positioning threaded hole is formed in the bottom area of the front end of a second extrusion plate (23) in a penetrating mode, the rear end of the positioning threaded rod (24) penetrates through the insertion hole from the front side of the second fixing plate (22) and extends into the rotating cavity, the rear end of the positioning threaded rod (24) is connected with the front end of a rotating plate (26), the rotating plate (26) is rotatably clamped with the rotating cavity, and the positioning threaded hole is screwed with the positioning threaded, the front end of the positioning threaded rod (24) is connected with the rear end of the fastening handle (25), and the bottom end of the second extrusion plate (23) is in sliding close fit with the top end of the supporting block (21).

2. A laser welding device as in claim 1, characterized in that the circumferential side walls of the tightening knob (9) and of the control knob (20) are provided with sets of anti-slip blocks (27).

3. A laser welding apparatus as set forth in claim 2, characterized in that it further comprises a stopper plate (28), and the front end of said stopper plate (28) is connected to the rear end of the adjusting screw rod (12).

4. A laser welding device as set forth in claim 3, characterized in that the connecting assembly comprises a rubber block (29), the left end of the rubber block (29) being connected to the right end of the fastening threaded rod (8), the right end of the rubber block (29) abutting against the left end of the telescopic rod (6).

5. A laser welding device as set forth in claim 4, characterized in that the right region of the control groove is provided with a non-slip strip (30), the right end of the control threaded rod (19) abutting against the left end of the non-slip strip (30).

6. A laser welding apparatus according to claim 5, further comprising two sets of rotary rings (31) and two sets of protective blocks (32), said two sets of rotary rings (31) being rotatably fitted to the holding portions of the adjusting handle (15) and the fastening handle (25), respectively, said two sets of protective blocks (32) being mounted at the front ends of the adjusting handle (15) and the fastening handle (25), respectively.

7. A laser welding device as defined in claim 6, characterized in that the inner ends of the first holding plate (16) and the first pressing plate (17) and the inner ends of the second holding plate (22) and the second pressing plate (23) are provided with two sets of anti-skid shim plates (33).

8. A laser welding device as defined in claim 7, further comprising a handle (34), the left end of said handle (34) being connected to the right end of the control ring (7).

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