Support laser welding device for packaging machine machining

Abstract

The invention discloses a support laser welding device for packaging machine machining, relates to the field of laser welding, and solves the problem that an existing welding device easily causes bending deformation of a U-shaped support. The support laser welding device comprises a device base and a supporting plate installed at the top of the device base, and two electric sliding tables are installed at the top of the device base; a laser welding head is arranged on a sliding table of the electric sliding table; the clamping mechanism is used for clamping the two ends of the support in an anti-disengaging mode, the clamping mechanism is installed on the outer side of the supporting plate, the clamping mechanism comprises two positioning boxes, and the top and the bottom of each positioning box are each provided with two inserting boxes; through the clamping mechanism, when the end of the support is inserted among the four inserting boxes on the positioning box, the support can only move in one direction, and when the support abuts against the outer side of the positioning box, side face positioning of the support is achieved, the side face of the support is supported, the welding quality of the support is guaranteed, and therefore the welding stability of the support is improved.

Description

Technical Field

[0001] The present invention relates to the field of laser welding, in particular to a bracket laser welding device for packaging machine processing. Background Art

[0002] A packaging machine is an automated or semi-automated mechanical equipment used to complete the product packaging process. Its main functions include encapsulation, filling, sealing, labeling, strapping and other processes. It is widely used in food, medicine, chemical, daily chemical, electronics, logistics and other industries.

[0003] In the field of packaging machinery manufacturing, the bracket is a key load-bearing component, and its welding quality directly affects the overall accuracy and stability of the equipment. Laser welding, with its advantages of high energy density and small heat-affected zone, is gradually replacing traditional arc welding and gas shielded welding processes, and has become the mainstream technology for high-precision bracket processing. When welding the bracket and the support, it is usually necessary to place the support on the positioning table first, and then position the bracket on the welding point of the support for welding, and position the support and the bracket with an auxiliary fixture. In order to ensure the stability between the bracket and the support, the bracket needs to be positioned by two splints. However, when welding a U-shaped structure bracket, the clamping force of the splint on the bracket is too large, which can easily cause depression on the inside of the bracket. When the bracket is deformed due to heat, the bracket position is easily offset, and the welding accuracy is poor. Summary of the Invention

[0004] The object of the present invention is to provide a laser welding device for a bracket used in packaging machine processing, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A laser welding device for a bracket used in packaging machine processing comprises: a device base and a support plate fixedly mounted on the top of the device base, two symmetrically distributed electric slides fixedly mounted on the top of the device base, and a laser welding head is provided on the slide of the electric slide; further comprising: a clamping mechanism for clamping the two ends of the bracket to prevent them from falling off, the clamping mechanism being mounted on the outer side of the support plate, the clamping mechanism comprising two symmetrically distributed positioning boxes, the top and bottom of each of the positioning boxes being fixedly mounted with two symmetrically distributed plug-in boxes, and the four plug-in boxes being capable of positioning the ends of the bracket to prevent them from falling off; an unlocking mechanism for removing the welded bracket from between the multiple plug-in boxes, the unlocking mechanism being mounted between the two positioning boxes, the unlocking mechanism comprising an adjusting box fixedly mounted between the two positioning boxes, the adjusting box enabling the multiple plug-in boxes to synchronously release the bracket; a fixed support mechanism for pressing the clamped and positioned bracket against the support, the fixed support mechanism being mounted on the outer side of the support plate, the fixed support mechanism comprising a push plate fixedly mounted between the two positioning boxes, the push plate being capable of moving the bracket downward toward the support.

[0006] Preferably, the clamping mechanism further comprises a plurality of first rotating rods equidistantly and rotatably installed between the vertically corresponding two insertion boxes, a plurality of pulleys equidistantly distributed are fixedly installed on the outer side of the first rotating rods, two second rotating rods symmetrically distributed are rotatably installed on the inner side of the positioning box, the two ends of the second rotating rods respectively extend to the adjacent two insertion boxes, a transmission chain is arranged on the inner side of the insertion box, and transmission wheels matched with the transmission chain are fixedly installed on the two ends of the second rotating rods and the first rotating rods, two gears symmetrically distributed are fixedly installed on the outer side of the second rotating rods, the gears on the two second rotating rods are meshed with each other, two ratchets are fixedly installed on the outer side of the second rotating rods, two mounting plates are fixedly installed on the inner side of the positioning box, the mounting plates are located between the two gears horizontally corresponding to the two second rotating rods, two clamping teeth respectively matched with the adjacent two ratchets are arranged on the two sides of the mounting plate, and a plurality of elastic telescopic rods in rectangular array distribution are fixedly installed between the clamping teeth and the mounting plate.

[0007] Preferably, the unlocking mechanism further comprises an adjusting rod rotatably installed on the inner side of the positioning box, the top end of the adjusting rod extends to the inner side of the adjusting box, a synchronous belt is rotatably installed between the two adjusting rods, the synchronous belt is located on the inner side of the adjusting box, a drive motor is fixedly installed on the top of the adjusting box, the output end of the drive motor is fixedly connected with the top end of the adjacent adjusting rod, a moving plate is arranged on the inner side of the positioning box, a light shaft for limiting sliding of the moving plate is fixedly installed on the inner side of the positioning box, an external thread matched with the moving plate is formed on the outer side of the adjusting rod, a U-shaped frame is fixedly installed on the side of the clamping tooth close to the mounting plate, a push block is fixedly installed on the inner side of the U-shaped frame, a sliding plate is slidably installed between the two U-shaped frames vertically corresponding to each other, the top of the push block is in inclined surface structure, a pressing groove corresponding to the push block is formed on the outer side of the sliding plate, and a plurality of supporting rods equidistantly distributed are fixedly installed between the sliding plate and the moving plate.

[0008] Preferably, the positioning mechanism further comprises a fixing plate fixedly installed on the outer side of the supporting plate, an electric push rod is fixedly installed between the top of the fixing plate and the bottom of the pushing plate, two sliding racks symmetrically distributed are fixedly installed on the outer side of the supporting plate, a sleeve is fixedly installed on the outer side of the positioning box, the sleeve is slidably installed on the outer side of the sliding rack, a rotating table is fixedly installed on the sliding table of the electric sliding table, a rotating plate is installed on the top end of the rotating table, an electric telescopic rod is fixedly installed on the outer side of the rotating plate, a positioning plate is fixedly installed between the top end of the electric telescopic rod and the laser welding head, and a detection probe is fixedly installed on the outer side of the rotating plate.

[0009] Preferably, guiding strips are fixedly installed between two vertically corresponding plug-in boxes, and the side of the guiding strips away from the plug-in boxes is in a slope structure, and the two adjacent guiding strips are symmetrically distributed.

[0010] Preferably, a contact plate is fixedly installed on the side of the positioning box away from the supporting plate, and the contact plate is located between the four plug-in boxes.

[0011] Preferably, a rubber sleeve is fixedly installed on the outer side of the pulley.

[0012] Preferably, a sleeve frame is slidingly installed on the outer side of the sliding plate, and the sleeve frame is fixedly installed on the outer side of the positioning box.

[0013] Preferably, a blocking strip is fixedly installed on the top of the device base, and the blocking strip is located between the two electric sliding tables.

[0014] Preferably, a sleeve frame is fixedly installed on the outer side of the positioning plate, and the positioning plate is slidingly installed on the inner side of the sleeve frame.

[0015] Compared with the prior art, the present application has the following beneficial effects: By means of the clamping mechanism, the bracket can only move in one direction when inserted between the four plug-in boxes on the positioning box at the end of the bracket, and the side of the bracket is positioned and supported when the bracket abuts against the outer side of the positioning box, thereby solving the problem of easy bending of the bracket during laser welding, ensuring the welding quality of the bracket, and improving the stability of the bracket welding.

[0016] By means of the unlocking mechanism, the height of the moving plate can be adjusted by the adjusting rod, the pressure groove on the outer side of the sliding plate can push the push block to move horizontally, the unlocking of the ratchet by the clamping tooth is realized, and then the unlocking of the pulley is realized, so that the staff can take out the welded bracket from the plurality of plug-in boxes, thereby achieving the effect of fast material taking.

[0017] By means of the positioning mechanism, the height of the two positioning boxes can be adjusted by the electric push rod, the pulley pushes the bracket to abut against the top of the support, the gap between the bracket and the support is prevented from being too large, and the detection probe can be used to monitor the welding point of the bracket and the support in real time, when the detection probe detects that the bracket is displaced due to thermal deformation, the electric telescopic rod can realize the displacement of the laser welding head, and dynamic compensation is provided for the welding point of the laser welding head, thereby improving the accuracy of welding. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application. Figure 2 It is a schematic diagram of the structure of the electric sliding table and the laser welding head in the present application. Figure 3 This is a schematic diagram of the positioning box and support plate structure in the present invention; Figure 4 Schematic diagram of the push plate and electric push rod structure in the present invention; Figure 5 This is a schematic diagram of the structure of the plug-in box and the adjustment box in the present invention; Figure 6 It is a schematic diagram of the structure of the movable plate and the mounting plate in the present invention; Figure 7 Schematic diagram of the ratchet and tooth structure of the present invention; Figure 8 It is a schematic diagram of the push block and slide structure in the present invention.

[0019] In the figure: 1. Device base; 2. Support plate; 3. Electric slide; 4. Laser welding head; 5. Positioning box; 6. Insert box; 7. Adjustment box; 8. Push plate; 9. First rotating rod; 10. Pulley; 11. Second rotating rod; 12. Transmission chain; 13. Gear; 14. Ratchet; 15. Mounting plate; 16. Gear; 17. Elastic telescopic rod; 18. Adjustment rod; 19. Synchronous belt; 20. Drive motor; 21. Moving plate; 22. U-shaped frame; 23. Push block; 24. Slide plate; 25. Support rod; 26. Fixed plate; 27. Electric push rod; 28. Slide; 29. ​​Sleeve; 30. Rotating table; 31. Rotating plate; 32. Electric telescopic rod; 33. Positioning plate; 34. Detection probe; 35. Guide strip; 36. Contact plate; 37. Rubber sleeve; 38. Sleeve frame; 39. Baffle strip; 40. Sleeve frame DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1-8 The figure shows a laser welding device for a bracket used in packaging machine processing, which includes a device base 1 and a support plate 2 fixedly installed on the top of the device base 1. The support to be welded is placed on the top of the support plate 2, and the bracket is placed on the top of the support. Two symmetrically distributed electric slides 3 are fixedly installed on the top of the device base 1. A laser welding head 4 is provided on the slide of the electric slide 3. The laser welding head 4 is moved by the electric slide 3 to weld the connection between the bracket and the support, and two laser welding heads 4 are used for synchronous welding to improve welding efficiency; it also includes: a clamping mechanism for clamping the two ends of the bracket to prevent them from falling off, and the clamping mechanism is installed on the outside of the support plate 2.

[0022] The clamping mechanism includes two symmetrically distributed positioning boxes 5, and two symmetrically distributed plug-in boxes 6 are fixedly installed on the top and bottom of the positioning box 5. The four plug-in boxes 6 can prevent the end of the bracket from falling off. The clamping mechanism also includes a plurality of first rotating rods 9 equidistantly installed between the two vertically corresponding plug-in boxes 6, and a plurality of equidistantly distributed pulleys 10 are fixedly installed on the outside of the first rotating rod 9. Two symmetrically distributed second rotating rods 11 are rotatably installed on the inner side of the positioning box 5. The two ends of the second rotating rod 11 extend between the two adjacent plug-in boxes 6 respectively. A transmission chain belt 12 is provided on the inner side of the plug-in box 6, and both ends of the second rotating rod 11 and the first rotating rod 9 are fixedly installed with a transmission chain belt 1 2. The transmission wheels that match each other make it possible for the outer side of the bracket to contact the pulley 10 when one end of the bracket is inserted between the four insertion boxes 6. The friction between the outer side of the bracket and the pulley 10 is used to rotate the pulley 10. The pulley 10 can then drive the transmission chain 12 to rotate through the transmission wheel on the first rotating rod 9, so that the transmission chain 12 drives the second rotating rod 11 to rotate. Two symmetrically distributed gears 13 are fixedly installed on the outer side of the second rotating rod 11, and the gears 13 on the two second rotating rods 11 are engaged with each other, so that the two second rotating rods 11 keep rotating in opposite directions. Two ratchets 14 are fixedly installed on the outer side of the second rotating rod 11, and two mounting plates 15 are fixedly installed on the inner side of the positioning box 5. The mounting plate 15 is located between the two ratchets 14 horizontally corresponding to the two second rotating rods 11. Two latch teeth 16 are provided on both sides of the mounting plate 15, respectively cooperating with the two adjacent ratchets 14. A plurality of elastic telescopic rods 17 distributed in a rectangular array are fixedly installed between the latch teeth 16 and the mounting plate 15. When the bracket contacts the outer side of the positioning box 5, the latch teeth 16 can be used to position the ratchet 14 through the elastic telescopic rods 17, and the second rotating rod 11 cannot rotate in the opposite direction. The second rotating rod 11 prevents the plurality of first rotating rods 9 from rotating in the opposite direction through the transmission chain belt 12. The pulley 10 can provide positioning for the bracket, fix the bracket between the four plug-in boxes 6 of the positioning box 5, and realize clamping of the bracket. Positioning, and providing positioning support for the outer side of the bracket through multiple pulleys 10 to ensure the stability when the bracket is welded to the support, a guide bar 35 is fixedly installed between the two vertically corresponding plug-in boxes 6, the side of the guide bar 35 away from the plug-in box 6 is a slope structure, and the two adjacent guide bars 35 are symmetrically distributed, which is convenient for the staff to insert the end of the U-shaped structure bracket between the four plug-in boxes 6 along the slope of the guide bar 35, and a contact plate 36 is fixedly installed on the side of the positioning box 5 away from the support plate 2, and the contact plate 36 is located between the four plug-in boxes 6, so that when the bracket is inserted into the four plug-in boxes 6 on the positioning box 5, the end of the bracket can be against the contact plate 36, providing protection between the end of the bracket and the positioning box 5.

[0023] Example 2: Please refer to Figure 4-Figure 8, this embodiment further explains the first embodiment, the unlocking mechanism in the figure includes an adjusting box 7 fixedly installed between the two positioning boxes 5, the adjusting box 7 makes the multiple plug-in boxes 6 release the bracket synchronously, the unlocking mechanism also includes an adjusting rod 18 rotatably installed on the inner side of the positioning box 5, the top of the adjusting rod 18 extends to the inner side of the adjusting box 7, and a synchronous belt 19 is rotatably installed between the two adjusting rods 18, and the synchronous belt 19 is located on the inner side of the adjusting box 7, the top of the adjusting box 7 is fixedly installed with a driving motor 20, and the output end of the driving motor 20 is fixedly connected to the top of the adjacent adjusting rod 18 When the driving motor 20 is running, it can drive the corresponding adjusting rod 18 to rotate, and the adjusting rod 18 drives another adjusting rod 18 to rotate synchronously through the synchronous belt 19. A moving plate 21 is provided on the inner side of the positioning box 5. An optical axis for limiting the sliding of the moving plate 21 is fixedly installed on the inner side of the positioning box 5, and an external thread that matches the moving plate 21 is provided on the outer side of the adjusting rod 18. When the adjusting rod 18 rotates, the moving plate 21 can be driven to move vertically along the outer side of the optical axis through the external thread on the outer side. A U-shaped frame 2 is fixedly installed on the side of the latch 16 close to the mounting plate 15. 2. A push block 23 is fixedly installed on the inner side of the U-shaped frame 22, and a slide plate 24 is slidably installed between the two vertically corresponding U-shaped frames 22. The top of the push block 23 is a sloped structure, and the outer side of the slide plate 24 is provided with a pressure groove corresponding to the push block 23. When the slide plate 24 moves downward, it can move along the slope of the push block 23 through the pressure groove on the outer side, so that the push block 23 pushes the U-shaped frame 22 to move, and the U-shaped frame 22 can drive the latch 16 away from the ratchet 14 to unlock the ratchet 14, thereby unlocking the pulley 10, and facilitating the removal of the welded bracket. The slide plate 24 A plurality of equally spaced support rods 25 are fixedly installed between the movable plate 21, so that the movable plate 21 can drive the slide plate 24 to move through the support rods 25. A rubber sleeve 37 is fixedly installed on the outer side of the pulley 10. The pulley 10 can contact the outer side of the bracket through the rubber sleeve 37, which facilitates the bracket to push the pulley 10 to rotate. A sleeve frame 38 is slidably installed on the outer side of the slide plate 24, and the sleeve frame 38 is fixedly installed on the outer side of the positioning box 5, so that the slide plate 24 can move along the inner side of the sleeve frame 38, providing support for the movement of the slide plate 24, and ensuring that the slide plate 24 can smoothly push the push block 23 to move.

[0024] Example 3: Please refer to Figure 2-Figure 4, this embodiment further illustrates other embodiments. The fixed support mechanism in the figure also includes a fixed plate 26 fixedly mounted on the outside of the support plate 2, and an electric push rod 27 is fixedly mounted between the top of the fixed plate 26 and the bottom of the push plate 8. Two symmetrically distributed slides 28 are fixedly mounted on the outside of the support plate 2, and a sleeve 29 is fixedly mounted on the outside of the positioning box 5. The sleeve 29 is slidably mounted on the outside of the slide 28, so that the electric push rod 27 can push the two positioning boxes 5 to move through the push plate 8, so that the positioning box 5 drives the sleeve 29 to move along the outside of the slide 28, which is convenient for adjusting the height of the positioning box 5, and can drive the pulley 10 to move downward through the plug-in box 6, so that the pulley 10 pushes the bracket to the top of the support to prevent a large gap. A rotating table 30 is fixedly mounted on the slide of the electric slide 3, and a rotating plate 31 is mounted on the top of the rotating table 30. An electric telescopic rod 32 is fixedly mounted on the outside of the rotating plate 31. A positioning plate 33 is fixedly installed between the top of 32 and the laser welding head 4, and a detection probe 34 is fixedly installed on the outer side of the rotating plate 31, so that the rotating table 30 can adjust the angle of the rotating plate 31, which is convenient for adjusting the welding angle of the laser welding head 4, and when the detection probe 34 detects that the bracket is displaced due to thermal deformation, the electric telescopic rod 32 can push the laser welding head 4 to move through the positioning plate 33, providing dynamic compensation for the welding point position of the laser welding head 4, and a baffle 39 is fixedly installed on the top of the device base 1, and the baffle 39 is located between the two electric slides 3, which can push the support against the outer side of the baffle 39, so that the support and the bracket are aligned, and a sleeve 40 is fixedly installed on the outer side of the positioning plate 33, and the positioning plate 33 is slidably installed on the inner side of the sleeve 40, so that the positioning plate 33 can move along the inner side of the sleeve 40, and the sleeve 40 provides support and guidance for the positioning plate 33, so that the positioning plate 33 can smoothly push the laser welding head 4 to move.

[0025] Working principle: First, the staff puts the support to be welded on the device base 1, so that one side of the support rests on the blocking bar 39, and inserts the two ends of the support between the four plug-in boxes 6 on the two positioning boxes 5 respectively. Then, the outer side of the support contacts the pulley 10 on the first rotating rod 9, and the friction between the support and the pulley 10 is used to drive the pulley 10 to drive the first rotating rod 9 to rotate. The first rotating rod 9 drives the transmission chain 12 to rotate and move through the transmission wheel, so that the transmission chain 12 drives the second rotating rod 11, and the second rotating rod 11 drives the ratchet 14 to rotate, so that the ratchet 14 pushes the card teeth 16 to compress the elastic telescopic rod 17. When the end of the bracket contacts the contact plate 36 on the positioning box 5, the elastic telescopic rod 17 is compressed. When in contact, the rebound force of the elastic telescopic rod 17 is used to lock the ratchet 14 with the latch teeth 16, so that the pulley 10 cannot rotate. The multiple pulleys 10 can clamp and position the bracket at multiple points. Subsequently, the staff starts the electric push rod 27, so that the electric push rod 27 pulls the two positioning boxes 5 downward through the push plate 8. The positioning box 5 drives the sleeve 29 to move downward along the outside of the slide 28. The positioning box 5 can drive the pulley 10 on the first rotating rod 9 to move downward through the plug box 6. The parallel pulleys 10 push the bracket downward so that the bottom of the bracket is against the top of the support. At this time, the two electric slides 3 are running, so that the electric slide 3 drives the rotating table 30 to move. The movable platform 30 drives the laser welding head 4 to approach the welding point of the bracket and the support through the electric telescopic rod 32 and the positioning plate 33, so that the laser welding head 4 in the moving state welds the bracket and the support, and the welding condition of the laser welding head 4 is detected in real time through the detection probe 34. When the detection probe 34 detects that the bracket is displaced due to thermal deformation, the electric telescopic rod 32 pushes the laser welding head 4 to move through the positioning plate 33, providing dynamic compensation for the welding point of the laser welding head 4, ensuring the welding accuracy of the laser welding head 4. Finally, the staff starts the drive motor 20, so that the drive motor 20 drives the corresponding adjustment rod 18 to rotate, and the adjustment rod 18 is synchronized with the The belt 19 drives another adjusting rod 18 to rotate synchronously, so that the adjusting rod 18 drives the movable plate 21 to move downward along the optical axis in the positioning box 5 through the external thread on its outer side, and the movable plate 21 drives the slide plate 24 to move through the support rod 25, so that the pressure groove on the slide plate 24 pushes the inclined surface of the push block 23, and the push block 23 can drive the tooth 16 to move through the U-shaped frame 22, so that the tooth 16 compresses the elastic telescopic rod 17, and the tooth 16 can move away from the ratchet 14 to unlock the ratchet 14. The staff can then take out the welded bracket and support, solving the problem of bending and deformation that is prone to occur during the bracket welding process, thereby achieving the effect of stable positioning and precise welding.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for a bracket used in packaging machine processing, characterized in that: include: A device base (1) and a support plate (2) installed on the top of the device base (1); two electric slides (3) are installed on the top of the device base (1); and a laser welding head (4) is provided on the slide of the electric slide (3); Also includes: A clamping mechanism for clamping the two ends of the bracket to prevent them from falling off, the clamping mechanism being installed on the outside of the support plate (2), the clamping mechanism comprising two positioning boxes (5), the top and bottom of each of the positioning boxes (5) being installed with two plug-in boxes (6), the four plug-in boxes (6) being able to prevent the ends of the bracket from falling off and positioning; An unlocking mechanism is used to remove the welded bracket from between the plurality of plug-in boxes (6), the unlocking mechanism is installed between two of the positioning boxes (5), and the unlocking mechanism includes an adjustment box (7) installed between the two positioning boxes (5), and the adjustment box (7) enables the plurality of plug-in boxes (6) to release the bracket synchronously; The fixed support mechanism is used to make the bracket close to the support after clamping and positioning. The fixed support mechanism is installed on the outside of the support plate (2). The fixed support mechanism includes a push plate (8) installed between the two positioning boxes (5). The push plate (8) can make the bracket move downward close to the support.

2. The laser welding device for a packaging machine processing bracket according to claim 1, characterized in that: The clamping mechanism further comprises a plurality of first rotating rods (9) mounted between two vertically corresponding insertion boxes (6), a plurality of pulleys (10) are fixedly mounted on the outer side of the first rotating rods (9), two second rotating rods (11) are rotatably mounted on the inner side of the positioning box (5), a transmission chain (12) is provided on the inner side of the insertion box (6), and transmission wheels matching the transmission chain (12) are fixedly mounted on both ends of the second rotating rods (11) and the first rotating rods (9), and the outer side of the second rotating rods (11) is provided with a plurality of pulleys (10) fixedly mounted on the outer side of the positioning box (5). Two gears (13) are fixedly installed, and the gears (13) on the two second rotating rods (11) are meshed with each other. Two ratchets (14) are fixedly installed on the outer side of the second rotating rod (11). Two mounting plates (15) are fixedly installed on the inner side of the positioning box (5). Two latching teeth (16) are provided on both sides of the mounting plate (15) and respectively match with the two adjacent ratchets (14). A plurality of elastic telescopic rods (17) are fixedly installed between the latching teeth (16) and the mounting plate (15).

3. The laser welding device for a packaging machine processing bracket according to claim 2, characterized in that: The unlocking mechanism further comprises an adjusting rod (18) rotatably mounted on the inner side of the positioning box (5), and a synchronous belt (19) is rotatably mounted between the two adjusting rods (18), and the synchronous belt (19) is located on the inner side of the adjusting box (7), a driving motor (20) is mounted on the top of the adjusting box (7), and the output end of the driving motor (20) is fixedly connected to the top end of the adjacent adjusting rod (18), a moving plate (21) is provided on the inner side of the positioning box (5), and a light guide for limiting the sliding of the moving plate (21) is installed on the inner side of the positioning box (5). The adjusting rod (18) is provided with an external thread matched with the movable plate (21) on the outer side, a U-shaped frame (22) is fixedly installed on one side of the latch (16), a push block (23) is installed on the inner side of the U-shaped frame (22), a slide plate (24) is slidably installed between the two vertically corresponding U-shaped frames (22), the top of the push block (23) is a sloped structure, and a pressing groove corresponding to the push block (23) is provided on the outer side of the slide plate (24), and a plurality of support rods (25) are fixedly installed between the slide plate (24) and the movable plate (21).

4. The laser welding device for a packaging machine processing bracket according to claim 3, characterized in that: The support mechanism also includes a fixed plate (26) installed on the outside of the support plate (2), an electric push rod (27) is fixedly installed between the top of the fixed plate (26) and the bottom of the push plate (8), two slides (28) are fixedly installed on the outside of the support plate (2), a sleeve (29) is fixedly installed on the outside of the positioning box (5), and the sleeve (29) is slidably installed on the outside of the slide (28), a rotating table (30) is installed on the slide of the electric slide (3), a rotating plate (31) is installed on the top of the rotating table (30), an electric telescopic rod (32) is installed on the outside of the rotating plate (31), a positioning plate (33) is fixedly installed between the top of the electric telescopic rod (32) and the laser welding head (4), and a detection probe (34) is installed on the outside of the rotating plate (31).

5. The laser welding device for a packaging machine bracket according to claim 2, characterized in that: A guide bar (35) is installed between two vertically corresponding plug-in boxes (6), and a side of the guide bar (35) away from the plug-in boxes (6) is a sloped structure.

6. The laser welding device for a packaging machine bracket according to claim 2, characterized in that: A contact plate (36) is installed on one side of the positioning box (5), and the contact plate (36) is located between the four insertion boxes (6).

7. The laser welding device for a packaging machine bracket according to claim 3, characterized in that: A rubber sleeve (37) is installed on the outer side of the pulley (10).

8. The laser welding device for a packaging machine bracket according to claim 3, characterized in that: A sleeve frame (38) is slidably mounted on the outer side of the slide plate (24), and the sleeve frame (38) is mounted on the outer side of the positioning box (5).

9. The laser welding device for a packaging machine bracket according to claim 4, characterized in that: A baffle (39) is installed on the top of the device base (1), and the baffle (39) is located between the two electric slides (3).

10. The laser welding device for a bracket used in packaging machine processing according to claim 4, characterized in that: A sleeve frame (40) is installed on the outer side of the positioning plate (33), and the positioning plate (33) is slidably installed on the inner side of the sleeve frame (40).

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