A circuit board laser welding machine

Abstract

This invention discloses a circuit board laser welding machine, belonging to the field of laser welding technology. It includes a support platform and a laser welding assembly mounted on its upper surface. The upper surface of the support platform has a strip-shaped through-slot extending to its lower surface, and the upper surface of the support platform also has two strip-shaped sliding slots parallel to the through-slot. The two sliding slots are respectively located on both sides of the through-slot. Each sliding slot has a pulley rolled within it, and a support plate is fixedly connected to the axle end of the pulley. A support block is connected to the upper surface of the support plate via an elastic mechanism. This invention can adjust the position of the mounting block according to the shape of the circuit board, thereby effectively positioning circuit boards of different shapes using a conical sleeve. Furthermore, through simple operation, it can achieve stable and effective clamping of the circuit board from both horizontal and vertical directions, ensuring that the circuit board is in a horizontal state during welding, thus improving welding quality.

Description

Technical Field

[0001] This invention relates to the field of laser welding machine technology, specifically to a circuit board laser welding machine. Background Technology

[0002] Circuit boards are the most commonly used electronic products in electronic devices. Circuit boards make circuits miniaturized and more intuitive, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. Before use, various electrical components need to be soldered onto them. Circuit board laser welding machines are devices used to solder electrical components onto circuit boards.

[0003] The existing circuit board shapes are not limited to square; other shapes also exist, such as trapezoidal or circular. Regardless of whether the circuit board is square, trapezoidal, or circular, it is provided with mounting holes. The mounting holes on square and trapezoidal circuit boards are generally located on the body itself, while the mounting holes on circular circuit boards are generally located on the protrusions connected to the edge of the body.

[0004] Existing circuit board laser welding machines still have the following technical problems in use, such as:

[0005] The device disclosed in CN216177574U is a laser welding device for electrical components and circuit boards. It uses the mutual repulsion of magnetic blocks and electromagnets to bring two fixed plates closer together, thereby clamping the circuit board. However, it cannot limit the front and rear positions of the circuit board during use.

[0006] In addition, in the existing technology, the circuit board is only clamped horizontally. This means that the circuit board is not limited in the longitudinal direction during the clamping process. As a result, the circuit board is not necessarily in a horizontal state after being clamped, which leads to the welding position shift during the automatic welding process and is not conducive to ensuring welding quality.

[0007] Therefore, a circuit board laser welding machine is needed to solve the above problems. Summary of the Invention

[0008] The purpose of this invention is to provide a circuit board laser welding machine to solve the problems mentioned in the background art, such as the inability of existing circuit board laser welding machines to stably clamp and fix circuit boards of different shapes in the left-right and front-back positions, and the inconvenience of effectively clamping circuit boards of different shapes.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A circuit board laser welding machine includes a support platform and a laser welding assembly mounted on its upper surface. The upper surface of the support platform is provided with a strip-shaped through groove extending to its lower surface. The upper surface of the support platform is also provided with two strip-shaped sliding grooves parallel to the strip-shaped through groove. The two strip-shaped sliding grooves are respectively located on both sides of the strip-shaped through groove. A pulley is tumblingly connected in each strip-shaped sliding groove, and a support plate is fixedly connected to the shaft end of the pulley. A support block is connected to the upper surface of the support plate through an elastic mechanism, and a positioning adjustment mechanism is installed between the two support blocks. A limit mechanism is fixedly connected to the middle of the positioning adjustment mechanism, and a pressing mechanism is provided on the limit mechanism.

[0011] Preferably, the elastic mechanism includes a first rod-tube telescopic assembly and a second rod-tube telescopic assembly connected between the support plate and the corresponding support block, and a third spring sleeved on the outside of the second rod-tube telescopic assembly is also provided between the support plate and the corresponding support block.

[0012] Preferably, both the first and second rod-tube telescopic components are composed of rod structures and tube structures, and the relative positions of the rod structures and tube structures on the first and second rod-tube telescopic components are opposite. Each support plate is provided with two sets of first rod-tube telescopic components, and the two sets of first rod-tube telescopic components are symmetrically arranged about the axis of the corresponding second rod-tube telescopic component.

[0013] Preferably, the positioning adjustment mechanism includes a lead screw with a bearing passing through the support block, and the two lead screws are arranged parallel to each other and the lead screws are arranged perpendicular to the strip-shaped through groove. Each lead screw has two bushings symmetrically threaded, and the outer side of the bushing is connected to a mounting block. The two threads on each lead screw have opposite directions of rotation, so that when the lead screw rotates, the two bushings on it move in opposite directions. The bushings have limit shafts passing through them, and the limit shafts are fixedly connected to their corresponding support blocks.

[0014] Preferably, the positioning adjustment mechanism further includes a strip-shaped through groove through the mounting block, and a limiting plate is connected through the strip-shaped through groove. A pad is axially connected to the lower end of the limiting plate, and the pad is disposed below the mounting block. An elastic pressure roller is disposed on the lower surface of the mounting block.

[0015] Preferably, the positioning adjustment mechanism further includes a mounting plate fixedly connected to the side of the pad, and a limiting rod perpendicular to the mounting plate is fixedly connected to the mounting plate. A conical sleeve is fitted on the upper end of the limiting rod, and a spring sleeved on the outside of the limiting rod is provided between the lower end of the conical sleeve and the upper surface of the mounting plate.

[0016] Preferably, the limiting mechanism includes two blocks fixedly connected to the lower surface of the support platform, and a prism-shaped support rod movably passes through the two blocks. The rear end of the support rod is symmetrically connected to two connecting rods, and one end of each connecting rod is fitted with a connecting tube. The other end of the connecting tube is axially connected to a shaft post, and the shaft post is fixedly connected to the lower surface of the support platform. A spring is provided between the end of the connecting tube fitted with the connecting rod and the end of the connecting rod connected to the support rod. The front end of the support rod is coaxially connected to a push-pull rod, and the push-pull rod movably passes through a protrusion provided at the front end of the lower surface of the support platform.

[0017] Preferably, the limiting mechanism further includes a support seat connected to the middle of the lead screw by a bearing, and the lower end of the support seat is movably connected through a strip-shaped through groove. The lower end of the support seat is provided with a connecting block coaxial with it, and the connecting block is provided with an inclined groove. The lower surface of the middle part of the support rod is provided with a pushing rod perpendicular to it, and the two ends of the pushing rod are respectively movably connected through two inclined grooves.

[0018] Preferably, the pressing mechanism includes sleeves provided on both sides of the upper end of the support base, and the sleeves are connected to the bearings of the support base. The sleeves are coaxially sleeved on the outside of the corresponding lead screw. The two coaxial sleeves are connected by an n-shaped actuating frame and an n-shaped driving frame. The driving frame is connected to a driving wheel by a bearing. The width of the driving frame is the same as the width of the actuating frame, and the length of the driving frame is greater than the length of the actuating frame.

[0019] Preferably, the pressing mechanism further includes an arc-shaped through groove penetrating both sides of the support base, and the support block is provided with an arc-shaped sliding groove corresponding to the arc-shaped through groove on the side facing the support base. A linkage rod is movably passed through the arc-shaped through groove, and the two ends of the linkage rod are slidably connected in the corresponding arc-shaped sliding groove. The linkage rod is also movably passed through the mounting block.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the circuit board laser welding machine can adjust the position of the mounting block according to the shape of the circuit board, thereby effectively positioning circuit boards of different shapes through the conical sleeve; in addition, through simple operation, it can achieve stable and effective clamping of the circuit board from both the horizontal and vertical directions, ensuring that the circuit board is in a horizontal state during welding, thus improving the welding quality.

[0021] 1. By rotating the lead screw, the two mounting blocks on it can be moved closer or further apart, thereby adjusting the position of the tapered sleeve so that circuit boards of different shapes can be fixedly connected to the pad block through the mounting holes;

[0022] 2. By pushing the push-pull rod, the support rod can be moved. The position of the support rod can be limited by the connecting rod, connecting tube, spring and shaft. At the same time, when the support rod moves, it drives the push rod to move synchronously. Then, the connecting block drives the support seat to move downward through the inclined groove. The downward movement of the support seat drives the mounting block to move downward synchronously. Then, the pad connected to the mounting block first contacts the upper surface of the support platform. After that, the mounting block continues to move downward, which will cause the mounting block and the pad to move relative to each other until the elastic pressure roller contacts the circuit board. At this time, the elastic pressure roller and the pad will contact the upper and lower surfaces of the circuit board respectively, thus initially clamping the circuit board.

[0023] 3. Additionally, as the sleeve moves down synchronously with the support block, the drive wheel contacts the upper surface of the support platform. As the support block continues to move down, the drive wheel rolls and moves the drive frame, which in turn drives the sleeve to rotate. This causes the actuating frame to rotate synchronously. When the actuating frame rotates, it squeezes the linkage rod, which in turn causes the mounting block to rotate only toward the pad block. This avoids the problem of the mounting block rotating in the opposite direction, which would prevent the elastic pressure roller from effectively squeezing the circuit board in the vertical direction. This ensures that the circuit board can be stably and effectively clamped in the vertical direction. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the support platform structure from below in this invention;

[0026] Figure 3 For the present invention Figure 2 Enlarged structural diagram of point A in the middle;

[0027] Figure 4 This is a top view of the support platform structure of the present invention;

[0028] Figure 5 This is a schematic cross-sectional view of the support platform of the present invention;

[0029] Figure 6 For the present invention Figure 5 Enlarged structural diagram of point B;

[0030] Figure 7 This is a schematic diagram of the connection structure between the push-pull rod and the connecting block of the present invention;

[0031] Figure 8 For the present invention Figure 7 Enlarged structural diagram of point C;

[0032] Figure 9 This is a schematic diagram of the connection structure between the connecting block and the limiting plate of the present invention;

[0033] Figure 10 For the present invention Figure 9 Enlarged structural diagram of point D;

[0034] Figure 11 This is a schematic diagram of the connection structure between the limiting shaft and the support block of the present invention.

[0035] In the diagram: 1. Support platform; 2. Laser welding assembly; 3. Strip through groove; 4. Strip sliding groove; 5. Push-pull rod; 6. Connecting block; 7. Push rod; 8. Support rod; 9. Support block; 10. Connecting rod; 11. Connecting pipe; 12. Spring 1; 13. Shaft column; 14. Support block; 15. Lead screw; 16. Support seat; 17. Linkage rod; 18. Mounting block; 19. Bushing; 20. Limiting plate; 21. Pad block 22. Elastic pressure roller; 23. Mounting plate; 24. Limiting rod; 25. Conical sleeve; 26. Spring II; 27. Inclined groove; 28. Pulley; 29. ​​Support plate; 30. Sleeve; 31. Actuating frame; 32. Drive frame; 33. Drive wheel; 34. Arc-shaped through groove; 35. Arc-shaped sliding groove; 36. Rod tube telescopic assembly I; 37. Rod tube telescopic assembly II; 38. Spring III; 39. Strip through groove; 40. Limiting shaft. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1-11 The present invention provides the following technical solution:

[0038] Example 1: To address the problem that conventional circuit board laser welding machines can only clamp circuit boards in the left-right direction and not in the front-back direction, which easily leads to the circuit board's positional deviation during welding, the following technical solution is provided: A circuit board laser welding machine includes a support platform 1 and a laser welding assembly 2 mounted on its upper surface. The upper surface of the support platform 1 is provided with a strip-shaped through groove 3 extending to its lower surface. The upper surface of the support platform 1 is also provided with two strip-shaped sliding grooves 4 parallel to the strip-shaped through groove 3. The two strip-shaped sliding grooves 4 are respectively located on both sides of the strip-shaped through groove 3. Each strip-shaped sliding groove 4 is rotatably connected to a pulley 28, and a support plate 29 is fixedly connected to the shaft end of the pulley 28. The upper surface of the support plate 29 is connected to a support block 14 through an elastic mechanism, and a positioning adjustment mechanism is installed between the two support blocks 14. A limit mechanism is fixedly connected to the middle of the positioning adjustment mechanism.

[0039] The elastic mechanism includes a first rod-tube telescopic assembly 36 and a second rod-tube telescopic assembly 37 connected between the support plate 29 and the corresponding support block 14. A third spring 38 is also provided between the support plate 29 and the corresponding support block 14 and sleeved on the outside of the second rod-tube telescopic assembly 37. Both the first rod-tube telescopic assembly 36 and the second rod-tube telescopic assembly 37 are composed of rod structures and tube structures. The relative positions of the rod structures and tube structures on the first rod-tube telescopic assembly 36 and the second rod-tube telescopic assembly 37 are opposite. Each support plate 29 is provided with two sets of first rod-tube telescopic assemblies 36, and the two sets of first rod-tube telescopic assemblies 36 are symmetrically arranged about the axis of the corresponding second rod-tube telescopic assembly 37.

[0040] The positioning adjustment mechanism includes a lead screw 15 that passes through the support block 14 and is parallel to each other. The lead screws 15 are perpendicular to the strip-shaped through groove 3. Each lead screw 15 is symmetrically threaded with two bushings 19. The outer side of the bushing 19 is connected to a mounting block 18. The two threads on each lead screw 15 have opposite directions of rotation, so that when the lead screw 15 rotates, the two bushings 19 on it move in opposite directions. A limit shaft 40 passes through the bushing 19 and is fixedly connected to its corresponding support block 14. The positioning adjustment mechanism also includes a strip-shaped through groove 39 that passes through the mounting block 18 and a limit plate 20 that passes through the strip-shaped through groove 39. The lower end of the limit plate 20 is axially connected to a pad 21 and the pad 21 is located below the mounting block 18. An elastic pressure roller 22 is provided on the lower surface of the mounting block 18.

[0041] according to Figures 2-6 as well as Figures 9-11 By rotating the lead screw 15 with a screwdriver, the bushing 19 can be prevented from rotating under the action of the limiting shaft 40, and the bushing 19 can be moved on the lead screw 15. By moving the two bushings 19 closer to each other or further away from each other, the position of the limiting mechanism can be adjusted according to the shape of different circuit boards, so as to limit the left and right and front and back of different shaped circuit boards.

[0042] The positioning adjustment mechanism also includes a mounting plate 23 fixedly connected to the side of the pad 21, and a limiting rod 24 perpendicular to the mounting plate 23 is fixedly connected to the mounting plate 23. A conical sleeve 25 is sleeved on the upper end of the limiting rod 24, and a spring 26 sleeved on the outside of the limiting rod 24 is provided between the lower end of the conical sleeve 25 and the upper surface of the mounting plate 23. The limiting mechanism includes two support blocks 9 fixedly connected to the lower surface of the support platform 1, and a prism-shaped support rod 8 is movably passed through the two support blocks 9. Two connecting rods 10 are symmetrically connected to the rear end of the support rod 8, and one end of a connecting tube 11 is sleeved on each connecting rod 10. The other end of the connecting tube 11 is axially connected to a shaft post 13, and the shaft post 13 is fixedly connected to... A spring 12 is provided between one end of the connecting tube 11, which is sleeved on the connecting rod 10, and one end of the connecting rod 10, which is connected to the support rod 8. A push-pull rod 5 is coaxially connected to the front end of the support rod 8, and the push-pull rod 5 moves through the protrusion at the front end of the lower surface of the support platform 1. The limiting mechanism also includes a support seat 16 connected to the middle of the lead screw 15 by a bearing, and the lower end of the support seat 16 moves through the strip-shaped through groove 3. A connecting block 6 is coaxially provided at the lower end of the support seat 16, and a slanted groove 27 is provided on the connecting block 6. A push rod 7 is perpendicular to the lower surface of the middle part of the support rod 8, and the two ends of the push rod 7 move through the two slanted grooves 27 respectively.

[0043] Align the mounting holes on the circuit board with the tapered sleeve 25, and make the tapered sleeve 25 pass through the corresponding mounting holes. At this time, the circuit board will be limited in the left and right and front and back directions to prevent its position from shifting during soldering.

[0044] Example 2: To address the problem that previous circuit board laser welding machines did not limit the vertical position of the circuit board when clamping it, which easily led to the circuit board not being in a horizontal state during welding, thus affecting the welding quality, the following technical solution is provided: Specifically, a pressing mechanism is provided on the limiting mechanism.

[0045] The pressing mechanism includes sleeves 30 on both sides of the upper end of the support base 16, and the sleeves 30 are connected to the bearings of the support base 16. The sleeves 30 are coaxially sleeved on the outside of the corresponding lead screw 15. The two coaxial sleeves 30 are connected by an n-shaped actuating frame 31 and an n-shaped driving frame 32. The driving frame 32 is connected to a driving wheel 33 by a bearing. The width of the driving frame 32 is the same as the width of the actuating frame 31, and the length of the driving frame 32 is greater than the length of the actuating frame 31. The pressing mechanism also includes an arc-shaped through groove 34 penetrating both sides of the support base 16. The support block 14 is provided with an arc-shaped sliding groove 35 corresponding to the arc-shaped through groove 34 on the side facing the support base 16. A linkage rod 17 is movably passed through the arc-shaped through groove 34, and the two ends of the linkage rod 17 are slidably connected to the corresponding arc-shaped sliding groove 35. The linkage rod 17 is also movably passed through the mounting block 18.

[0046] according to Figure 7 and Figure 8 During the downward movement of the support block 14, the lead screw 15 moves downward synchronously, and the mounting block 18 and bushing 19 also move downward. When the pad 21 connected to the mounting block 18 via the limiting plate 20 contacts the upper surface of the support platform 1, the pad 21 will stop moving downward. Afterward, the mounting block 18 continues to move downward until the elastic pressure roller 22 contacts the upper surface of the circuit board. At this time, both sides of the circuit board will contact the elastic pressure roller 22 and the pad 21 respectively. Afterward, the mounting block 18 continues to move downward until it reaches the lowest point. During its continued downward movement to the lowest point, the elastic pressure roller 22 moves downward along with the mounting block. Mounting block 18 rotates on bushing 19 until drive wheel 33 contacts the upper surface of support platform 1. After that, drive wheel 33 will roll on the upper surface of support platform 1 as mounting block 18 continues to move downward, thereby driving sleeve 30 to rotate. This causes the actuating bracket 31 on it to press the linkage rod 17, causing mounting block 18 to rotate in the opposite direction. This ensures that mounting block 18 is stably pressed against the circuit board by elastic pressure roller 22 on it. In turn, the circuit board can be clamped in the vertical direction by pad 21 and elastic pressure roller 22, ensuring that it is in a horizontal state during welding, which helps to improve welding quality.

[0047] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circuit board laser welding machine comprising a support table (1) and a laser welding assembly (2) mounted on the upper surface thereof, characterized in that: The upper surface of the support table (1) is provided with a strip-shaped through groove (3) penetrating to the lower surface thereof, and the upper surface of the support table (1) is further provided with two strip-shaped sliding grooves (4) parallel to the strip-shaped through groove (3), and the two strip-shaped sliding grooves (4) are respectively arranged on the two sides of the strip-shaped through groove (3), each strip-shaped sliding groove (4) is rollingly connected with a pulley (28), and the shaft end of the pulley (28) is fixedly connected with a support piece (29), the upper surface of the support piece (29) is connected with a support block (14) through an elastic mechanism, and a positioning adjusting mechanism is arranged between the two support blocks (14), the positioning adjusting mechanism comprises a lead screw (15) penetrating through the support block (14), two shaft sleeves (19) are symmetrically and threadedly connected on each lead screw (15), the outer side bearing of the shaft sleeve (19) is connected with a mounting block (18), the positioning adjusting mechanism further comprises a strip-shaped through groove (39) penetrating through the mounting block (18), and a limiting plate (20) is penetratingly connected on the strip-shaped through groove (39), the lower end shaft of the limiting plate (20) is connected with a pad (21), and the pad (21) is arranged below the mounting block (18), the lower surface of the mounting block (18) is provided with an elastic pressing wheel (22), the middle part of the positioning adjusting mechanism is fixedly connected with a limiting mechanism, the limiting mechanism comprises two supporting blocks (9) fixedly connected to the lower surface of the support table (1), and a prismatic support rod (8) is movably penetrating through the two supporting blocks (9), the limiting mechanism further comprises a support seat (16) bearing connected to the middle part of the lead screw (15), the lower end of the support seat (16) is provided with a connecting block (6) coaxial therewith, the connecting block (6) is provided with an inclined groove (27), the lower surface of the middle part of the support rod (8) is provided with a pushing rod (7) perpendicular thereto, and the two ends of the pushing rod (7) are movably penetrating through the two inclined grooves (27), the limiting mechanism is provided with a pressing mechanism, the pressing mechanism comprises a sleeve (30) arranged on the two sides of the upper end of the support seat (16), the two coaxial sleeves (30) are connected through an n-shaped pushing frame (31) and an n-shaped driving frame (32), the driving frame (32) is bearing connected with a driving wheel (33), the pressing mechanism further comprises an arc-shaped through groove (34) penetrating through the two sides of the support seat (16), and the arc-shaped through groove (34) is movably penetrating through a linkage rod (17), and the linkage rod (17) is movably penetrating through the mounting block (18).

2. The circuit board laser welding machine of claim 1, wherein: The elastic mechanism comprises a rod pipe telescopic assembly one (36) and a rod pipe telescopic assembly two (37) connected between the support piece (29) and the corresponding support block (14), and a spring three (38) is further arranged outside the rod pipe telescopic assembly two (37).

3. A circuit board laser welding machine according to claim 2, wherein: The rod-tube telescopic assembly one (36) and the rod-tube telescopic assembly two (37) are both composed of a rod structure and a tube structure, and the relative positions of the rod structure and the tube structure on the rod-tube telescopic assembly one (36) and the rod-tube telescopic assembly two (37) are opposite, two groups of rod-tube telescopic assembly one (36) are arranged on each support sheet (29), and the two groups of rod-tube telescopic assembly one (36) are symmetrically arranged about the axis of the corresponding rod-tube telescopic assembly two (37).

4. The circuit board laser welding machine of claim 3, wherein: The two lead screws (15) are arranged in parallel with each other and are arranged in a non-planar perpendicular to the strip-shaped through slot (3), the rotation directions of the two threads arranged on each lead screw (15) are opposite, so that when the lead screw (15) rotates, the two shaft sleeves (19) on the lead screw (15) move in opposite directions, the limiting shaft (40) penetrates through the shaft sleeve (19), and the limiting shaft (40) is fixedly connected to the corresponding support block (14).

5. A circuit board laser welding machine according to claim 4, wherein: The positioning adjusting mechanism further comprises a mounting plate (23) fixedly connected to the side surface of the pad (21), and a limiting rod (24) perpendicular to the mounting plate (23) is fixedly connected to the mounting plate (23), a taper sleeve (25) is arranged on the upper end of the limiting rod (24), and a spring (26) is arranged on the outer side of the limiting rod (24) between the lower end of the taper sleeve (25) and the upper surface of the mounting plate (23).

6. A circuit board laser welding machine according to claim 5, wherein: The rear end of the support rod (8) is symmetrically connected with two connecting rods (10), one end of a connecting pipe (11) is sleeved on each connecting rod (10), the other end of the connecting pipe (11) is connected with a shaft column (13), and the shaft column (13) is fixedly connected to the lower surface of the support table (1), a spring (12) is arranged between the one end of the connecting pipe (11) sleeved on the connecting rod (10) and the one end of the support rod (8) connected with the connecting rod (10), and the front end of the support rod (8) is coaxially connected with a push-pull rod (5), and the push-pull rod (5) movably penetrates through the protrusion arranged on the front end of the lower surface of the support table (1).

7. A circuit board laser welding machine according to claim 6, wherein: The lower end of the support seat (16) movably penetrates through the strip-shaped through slot (3).

8. A circuit board laser welding machine according to claim 7, characterized in that: The sleeve pipe (30) is bearing-connected with the support seat (16), and the sleeve pipe (30) is coaxially sleeved on the outer side of the corresponding lead screw (15), the width of the driving frame (32) is the same as the width of the dial frame (31), and the length of the driving frame (32) is greater than the length of the dial frame (31).

9. A circuit board laser welding machine according to claim 8, wherein: The side of the support block (14) facing the corresponding support seat (16) is provided with an arc-shaped sliding groove (35) corresponding to the arc-shaped through slot (34), and the two ends of the linkage rod (17) are respectively slidingly connected in the corresponding arc-shaped sliding groove (35).

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