A fixture for laser welding of plastic parts

Abstract

The application relates to the field of plastic part welding, and particularly discloses a clamp for laser welding of plastic parts, which solves the problems of poor universality of the existing laser welding clamp for plastic parts, and increased cost of one-mold-one-piece, and provides the following scheme, which comprises a base, a slide frame, a sliding seat, an insertion block, a mounting ring, a rotating drum, a positioning assembly, a clamping rod and a driving assembly, the driving assembly is used for driving the two slide frames to move close to or away from each other, a clamping assembly is arranged on the ring disc, the clamping assembly is used for driving the clamping rods to move close to each other to clamp the plastic parts, clamping plates are arranged on the front and back sides of the base, a linkage assembly is arranged on the base, and the linkage assembly is used for driving the clamping plates on the front and back sides to move close to each other to clamp the plastic parts when the two slide frames move away from each other. The device can stably clamp and weld plastic parts in various shapes and states, can weld regular plastic parts with a certain interval, has good universality, and is low in use cost.

Description

Technical Field

[0001] This invention relates to the field of welding plastic parts, and in particular to a fixture for laser welding plastic parts. Background Technology

[0002] Laser welding of plastic parts is a precision thermoplastic joining process that uses a laser as a heat source and leverages the different light transmission and absorption characteristics of thermoplastics to rapidly melt the joint surfaces of two plastic parts. Under external pressure, the melted parts cool and solidify, resulting in a strong and precise connection. The principle involves transmission laser welding, where the upper plastic part transmits the laser light, while the lower part absorbs the laser and converts it into heat, melting the contact surfaces and completing the weld under pressure and cooling.

[0003] However, with the increasing complexity of plastic parts in production design, the fixtures used for welding plastic parts can only be pre-customized, allowing for one-to-one clamping and positioning. This results in poor fixture versatility during laser welding, especially for irregularly shaped plastic parts, while using custom molds increases costs. Therefore, a fixture for laser welding plastic parts is proposed. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the present invention proposes a fixture for laser welding of plastic parts, which solves the problems of poor versatility of existing laser welding fixtures for plastic parts and the fact that one piece per mold will increase costs.

[0005] To solve the above-mentioned technical problems, the basic technical solution proposed by this invention is as follows: A fixture for laser welding of plastic parts includes a base, on both sides of which slide rail frames are symmetrically slidably arranged. Each slide rail frame has a slide seat slidably arranged inside it. On both sides of the slide seat, there are insert blocks that abut against the inner wall of the slide rail frame. A mounting ring is also slidably arranged on the slide seat. A rotating cylinder is rotatably fitted inside the mounting ring. A positioning component is provided on the slide seat to synchronously fix the positions of the slide seat and the mounting ring. Multiple clamping rods are slidably arranged in an array inside the rotating drum. A driving assembly is provided on the base, which is used to drive the two side slide frames to move closer or further apart. A clamping assembly is provided on the ring plate, which is used to drive the clamping rods to move closer together to clamp the plastic part. Clamping plates are provided on the front and rear sides of the base. A linkage assembly is provided on the base, which is used to drive the front and rear clamping plates to move closer together to clamp the plastic part when the two side slide frames move further apart.

[0006] Preferably, a bracket is installed on the rear side of the base, an x-axis slide rail is installed on the bracket, and an x-axis guide block is slidably disposed within the x-axis slide rail. A y-axis slide rail is installed below the x-axis slide rail, and a y-axis guide block is slidably disposed within the y-axis slide rail. A telescopic component is installed at the extended end of the y-axis guide block below the y-axis slide rail, and a laser welding device is installed at the lower output end of the telescopic component.

[0007] Preferably, the drive assembly includes a slide block frame, a servo motor, a bidirectional lead screw, and a sleeve. The slide block frame is installed on the front and rear sides of the base and arranged parallel to each other on the front and rear sides of the two slide rail frames. The servo motor is installed at one end of the slide block frame. One end of the bidirectional lead screw is connected to the output end of the servo motor, and the other end is rotatably installed on the slide block frame. The sleeve is connected to the front and rear sides of the slide rail frame, and the sleeve is threaded on the outer side of the bidirectional lead screw and slidably sleeved on the outer side of the slide block frame. The threads at both ends of the outer side of the bidirectional lead screw have opposite directions. The sleeves on the two sides of the slide rail frame are symmetrically threaded on the outer sides of both ends of the bidirectional lead screw.

[0008] Preferably, the positioning component includes a first slide groove, an insert block, a second slide rod frame, a frame plate, a stud, the second slide groove, and a slider. The first slide groove is formed on the slide base. Two insert blocks are symmetrically slidably arranged at both ends of the first slide groove, with the ends of the two insert blocks penetrating the slide base and engaging with the inner wall of the slide frame. The second slide rod frame is connected to the slide base. The frame plate is slidably fitted on the outside of the second slide rod frame, and rotating plates are rotatable between the two ends of the lower side of the frame plate and the two insert blocks. The stud is rotatably installed on the slide base, and the frame plate is threaded onto the outside of the stud. The second slide groove is formed on the slide base and is parallel to the first slide groove. The slider is slidably arranged in the second slide groove, with its lower end extending below the slide base. A mounting ring is connected to the extended end of the slider. A pressure strip is connected to the lower end face of the frame plate, and the upper end face of the pressure strip engages with the slider.

[0009] Preferably, the first slide groove passes through the upper and lower end faces of the slide block, the first rotating plate passes through and rotates within the first slide groove, the second slide groove also passes through the upper and lower end faces of the slide block, the pressure strip slides through the second slide groove, and the slide block is provided with insertion holes on both sides that pass through the first slide groove. The insertion blocks on both sides extend through the insertion holes to the outside of the slide block and fit against the inner wall of the slide frame.

[0010] Preferably, the clamping assembly includes a collar, guide rods, a slip ring, and a second telescopic component. The collar is connected to the mounting ring and rotatably fitted onto the outside of the rotating cylinder. The guide rods are connected to the end of the collar away from the mounting ring and are arranged in a circumferential array. The slip rings are slidably fitted onto the outside of each guide rod. The second telescopic component is installed on the collar, and the output end of the second telescopic component is connected to the slip ring. A second rotating plate is rotatably connected between the slip ring and each clamping rod.

[0011] Preferably, a connecting rod is connected to the mounting ring, the collar is connected to the connecting rod, a ring disk is connected to the end of the rotating cylinder away from the mounting ring, the collar is rotatably sleeved on the outside of the ring disk, a plurality of slide rod frames three are arrayed and connected to the end of the ring disk away from the mounting ring, the clamping rod is slidably sleeved on the outside of the slide rod frame three on its respective side, and a spring one sleeved on the outside of the slide rod frame three is connected between the clamping rod and the outer end of the slide rod frame three away from the center of the ring disk.

[0012] Preferably, a gear ring is fitted on the outer side of the rotating drum, and servo motors are installed on both sides of the mounting ring. Gears are fitted on the output ends of the servo motors, and the gears on both sides are respectively meshed with the gear ring. A mounting seat is slidably fitted on the outer side of the slide rod frame, and a mounting groove is opened on the mounting seat. The clamping rod is installed in the mounting groove through a bolt. The rotating plate is rotatably connected to the mounting seat, and the spring is also connected to the mounting seat.

[0013] Preferably, the linkage component includes a guide groove one, a guide groove two, a top seat, and a sliding frame. The guide groove one is opened on the left and right sides of the base, and the guide groove two is opened on the front and rear sides of the base. The top seat is slidably disposed in the guide groove one on the left and right sides, and the sliding frame is slidably disposed in the guide groove two on the front and rear sides. The front and rear ends of the top seat on the left and right sides are respectively rotatably connected to the left and right ends of the sliding frame on the front and rear sides. The clamping plate is connected to the sliding frame, and the top seat on both sides and the sliding frame on both sides cooperate and abut against each other on the opposite side.

[0014] Preferably, a slide rod frame four is installed on the lower end face of the base, located below the guide groove one. A sleeve two is slidably sleeved on the slide rod frame four, and a spring two sleeved on the outside of the slide rod frame four is connected between the sleeve two and the ends of the slide rod frame four that are far apart from each other. The top seat is connected to the upper end of the sleeve two. The slide frame slides in the guide groove two, and its lower end extends to the bottom of the base. The rotating plate three is located below the base, and the end of the rotating plate three that is far away from the slide frame is rotatably connected to the sleeve two.

[0015] The beneficial effects of this invention are: 1. The technical solution of the present invention involves welding irregular or non-irregular plastic parts connected at both ends of the axis. The two parts of the plastic parts are placed in the rotating cylinders of the two side slide frames respectively, and the two parts of the plastic parts extend to the space between the two side rotating cylinders and the slide frames. Then, the telescopic component 2 is controlled to retract, which drives the slip ring to move closer to the collar, so that the slip ring is compressed and pushes each rotating plate 2 to rotate. This drives each mounting seat and the clamping rods on it in the rotating cylinder to move closer to each other to clamp the two parts of the plastic parts. This enables the two parts of the plastic parts to be clamped separately. Since the clamping rods are installed in the mounting grooves of the mounting seats by bolts, when facing different irregular plastic parts, only different clamping rods need to be replaced to achieve axial stable clamping of the plastic parts in the rotating cylinders of the two side slide frames. 2. The technical solution of this invention involves clamping the plastic parts connected by ferrules at both ends along the axial direction, sliding the slide blocks in the slide rail frames on both sides, and controlling the slider on the mounting ring to slide in the second groove on the slide block. This allows the two plastic parts on the slide rail frames to be symmetrical along the axial direction of the two rotating cylinders and to stably connect the ferrules. Then, rotating the stud causes the frame plate to move downward. The downward movement of the frame plate will cause the rotating plate to rotate and push the inserts on both sides of the slide block in the first groove on the slide block away from each other until the inserts penetrate the insertion hole and extend to the outside of the slide block, abutting against the inner wall of the slide rail frame. This allows the slide block to be positioned relative to the slide rail frame. At the same time, the downward movement of the frame plate will also drive the pressure strip. The slide moves downward and passes through the second slide groove, contacting the upper end of the slider inside the second slide groove to position the slider, mounting ring, and rotating cylinder. This ensures that the two plastic parts clamped in the rotating cylinders on both sides are in a coaxial state. Then, the servo motor is started to drive the bidirectional lead screw to rotate, causing the two slide frames on both sides to move closer to each other, so that the two coaxial parts can be connected by a retaining sleeve. The plastic parts with stable positions can move closer to each other and connect with the retaining sleeve. Then, by controlling the x-axis slide rail and y-axis slide rail, the position of the laser welding equipment is adjusted to perform laser welding on the retaining sleeve connection of the plastic parts on both sides. This effectively improves versatility and ensures that laser welding of various plastic parts with different shapes is possible. 3. The technical solution of the present invention controls the two side slide frames to first move closer to each other, so as to center and straighten the regularly shaped plastic parts placed on the base and connected by the upper and lower opening and closing sleeves. Then, the two side slide frames are driven to move away from each other, so that the two side slide frames respectively abut against the two side top seats and move away from each other, and drive the two side sleeve seats to move away from each other and compress the two springs, thereby driving the rotating plate three to rotate, so as to pull the front and rear clamping plates to move closer to each other, so as to straighten and clamp the regularly shaped plastic parts that have been straightened left and right. In this way, by adjusting the position of the laser welding equipment, the welding of regularly shaped plastic parts that open and close up and down can be achieved, which improves versatility and reduces the cost of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the front structure of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention without a base and support; Figure 4 This is a schematic diagram of the relevant structures on the slide frame of the present invention; Figure 5 This is a front sectional view of the relevant structures on the slide frame of the present invention; Figure 6 This is a schematic diagram of the relevant structures on the slide of the present invention; Figure 7 This is a schematic diagram of the relevant structures inside the slide of the present invention; Figure 8 This is a side view of the relevant structures inside the slide of the present invention; Figure 9 This is a schematic diagram of the clamping component of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Base; 2. Bracket; 3. X-axis slide rail; 4. X-axis guide block; 5. Y-axis slide rail; 6. Y-axis guide block; 7. Telescopic component one; 8. Laser welding equipment; 9. Slide rod bracket one; 10. Servo motor one; 11. Lead screw; 12. Sleeve one; 13. Slide frame; 14. Slide seat; 15. Slide groove one; 16. Insertion hole; 17. Insertion block; 18. Slide rod bracket two; 19. Frame plate; 20. Rotating plate one; 21. Stud; 22. Slide groove two; 23. Slider; 24. Pressure strip; 25. Mounting ring; 26. 1. Rotary drum; 27. Ring disc; 28. Connecting rod; 29. ​​Collar; 30. Servo motor II; 31. Gear; 32. Guide rod; 33. Slip ring; 34. Telescopic component II; 35. Slide rod frame III; 36. Mounting base; 37. Spring I; 38. Rotating plate II; 39. Mounting groove; 40. Clamping rod; 41. Guide groove I; 42. Guide groove II; 43. Slide rod frame IV; 44. Sleeve II; 45. Spring II; 46. Top seat; 47. Slide frame; 48. Clamping plate; 49. Rotating plate III; 50. Gear ring. Detailed Implementation

[0018] The following will be combined with the appendix Figure 1 To be continued Figure 9 The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: As Figures 1-9 As shown, the present invention discloses a fixture for laser welding of plastic parts, including a base 1, with slide frames 13 symmetrically slidably arranged on both sides of the base 1, and a slide seat 14 slidably arranged in each slide frame 13. Insert blocks 17 that cooperate and abut against the inner wall of the slide frame 13 are symmetrically slidably arranged on both sides of the slide seat 14. A mounting ring 25 is also slidably arranged on the slide seat 14. A rotating cylinder 26 is rotatably fitted inside the mounting ring 25. A positioning component is provided on the slide seat 14, which is used to synchronously fix the position of the slide seat 14 and the mounting ring 25. Multiple clamping rods 40 are arranged in an array inside the rotating drum 26. A driving component is provided on the base 1. The driving component is used to drive the two side slide frames 13 to move closer or further apart. A clamping component is provided on the ring disk 27. The clamping component is used to drive the clamping rods 40 to move closer together to clamp the plastic part. Clamping plates 48 are provided on the front and rear sides of the base 1. A linkage component is provided on the base 1. The linkage component is used to drive the clamping plates 48 on the front and rear sides to move closer together to clamp the plastic part when the two side slide frames 13 move further apart.

[0020] A bracket 2 is installed on the rear side of the base 1. An x-axis slide rail 3 is installed on the bracket 2, and an x-axis guide block 4 is slidably arranged inside the x-axis slide rail 3. A y-axis slide rail 5 is installed below the x-axis slide rail 3, and a y-axis guide block 6 is slidably arranged inside the y-axis slide rail 5. A telescopic component 7 is installed at the extension end of the y-axis guide block 6 below the y-axis slide rail 5, and a laser welding device 8 is installed at the lower output end of the telescopic component 7.

[0021] This allows for convenient adjustment of the position of the laser welding equipment 8 by controlling the x-axis slide rail 3 to drive the x-axis guide block 4 and the y-axis slide rail 5 to slide, and by controlling the y-axis slide rail 5 to drive the y-axis guide block 6 and the telescopic component 7 to slide. At the same time, it also allows for the control of the telescopic component 7 to adjust the height of the laser welding equipment 8, so as to achieve high-precision laser welding.

[0022] Example 2: Figures 1-9 As shown, the present invention discloses a fixture for laser welding of plastic parts. Compared with Embodiment 1, this embodiment discloses the structure of the driving component.

[0023] The drive assembly includes a slide block 9, a servo motor 10, a bidirectional lead screw 11, and a sleeve 12. The slide block 9 is installed on the front and rear sides of the base 1 and arranged parallel to each other on the front and rear sides of the slide rail frames 13. The servo motor 10 is installed at one end of the slide block 9. One end of the bidirectional lead screw 11 is connected to the output end of the servo motor 10, and the other end is rotatably installed on the slide block 9. The sleeve 12 is connected to the front and rear sides of the slide rail frame 13. The sleeve 12 is threaded on the outer side of the bidirectional lead screw 11 and slidably sleeved on the outer side of the slide block 9. The threads at both ends of the outer side of the bidirectional lead screw 11 turn in opposite directions. The sleeves 12 on both sides of the slide rail frame 13 are symmetrically threaded on the outer sides of both ends of the bidirectional lead screw 11.

[0024] This allows the servo motors 10 on both sides to run synchronously and rotate in both directions, thereby driving the bidirectional lead screw 11 to rotate in both directions, which in turn drives the slide frames 13 on both sides to slide closer to or further away from each other.

[0025] Example 3: Figures 1-9 As shown, the present invention discloses a fixture for laser welding of plastic parts. Compared with Embodiment 2, this embodiment discloses the structure of the clamping assembly.

[0026] The clamping assembly includes a collar 29, guide rods 32, slip rings 33, and telescopic components 34. The collar 29 is connected to the mounting ring 25 and rotatably fitted onto the outside of the rotating cylinder 26. The guide rods 32 are connected to the end of the collar 29 away from the mounting ring 25 and are arranged in a circumferential array. The slip rings 33 are slidably fitted onto the outside of each guide rod 32. The telescopic components 34 are installed on the collar 29, and the output end of the telescopic components 34 is connected to the slip rings 33. Rotary plates 38 are rotatably connected between the slip rings 33 and each clamping rod 40.

[0027] When welding irregular or non-irregular plastic parts connected at both ends of the axis, the two parts of the plastic parts are placed in the rotating cylinders 26 of the slide frame 13 on both sides, and the two plastic parts extend to the space between the rotating cylinders 26 and the slide frame 13. Then, the telescopic component 34 is controlled to retract, which drives the slip ring 33 to move closer to the collar 29, so that the slip ring 33 is compressed and pushes each rotating plate 38 to rotate, thereby driving each clamping rod 40 to move closer to each other to clamp the two plastic parts, so that the two plastic parts can be clamped separately.

[0028] A connecting rod 28 is connected to the mounting ring 25, and a collar 29 is connected to the connecting rod 28. A ring disk 27 is connected to the end of the rotating cylinder 26 away from the mounting ring 25. The collar 29 is rotatably sleeved on the outside of the ring disk 27. Multiple slide rod brackets 35 are arrayed and connected to the end of the ring disk 27 away from the mounting ring 25. Clamping rods 40 are slidably sleeved on the outside of the slide rod brackets 35 on their respective sides. A spring 37 sleeved on the outside of the slide rod brackets 35 is connected between the clamping rods 40 and the outer end of the slide rod brackets 35 away from the center of the ring disk 27.

[0029] The mechanism ensures the stability of each clamping rod 40 sliding radially along the rotating cylinder 26. At the same time, the spring 37 allows each clamping rod 40 to move away from each other without external force, making it easier to insert plastic parts for clamping.

[0030] A gear ring 50 is fitted on the outer side of the rotating drum 26. Servo motors 30 are installed on both sides of the mounting ring 25. Gears 31 are fitted on the output end of the servo motors 30, and the gears 31 on both sides are respectively meshed with the gear ring 50. A mounting seat 36 is slidably fitted on the outer side of the sliding rod bracket 35. A mounting groove 39 is opened on the mounting seat 36. The clamping rod 40 is installed in the mounting groove 39 through a bolt. The rotating plate 38 is rotatably connected to the mounting seat 36. The spring 37 is also connected to the mounting seat 36.

[0031] Since the clamping rod 40 is installed in the mounting groove 39 of the mounting base 36 by bolts, when dealing with different irregular plastic parts, only different clamping rods 40 need to be replaced to achieve axial stable clamping of the plastic parts in the rotating cylinder 26 of the slide frame 13 on both sides.

[0032] Example 4: Figures 1-9 As shown, the present invention discloses a fixture for laser welding of plastic parts. Compared with Embodiment 3, this embodiment discloses the structure of the positioning component.

[0033] The positioning assembly includes a slide groove 15, insert blocks 17, a slide rod bracket 28, a frame plate 19, studs 21, a slide groove 22, and a slider 23. The slide groove 15 is formed on the slide base 14. Two insert blocks 17 are symmetrically arranged at both ends of the slide groove 15, with the ends of the two insert blocks 17 penetrating the slide base 14 and engaging with the inner wall of the slide frame 13. The slide rod bracket 28 is connected to the slide base 14. The frame plate 19 is slidably fitted onto the outside of the slide rod bracket 28, and the lower sides of the frame plate 19 have two... Rotating plate 20 is rotated between the end and the two sides of the insert block 17. The stud 21 is rotatably installed on the slide block 14. The frame plate 19 is threaded on the outside of the stud 21. The second slide groove 22 is opened on the slide block 14 and is arranged parallel to the first slide groove 15. The slider 23 is slidably disposed in the second slide groove 22. The lower end of the slider 23 extends to the bottom of the slide block 14. The mounting ring 25 is connected to the extended end of the slider 23. The lower end face of the frame plate 19 is connected to the pressure strip 24, and the upper end face of the pressure strip 24 and the slider 23 are in contact with each other.

[0034] The first slide groove 15 passes through the upper and lower end faces of the slide block 14. The first rotating plate 20 passes through and rotates within the first slide groove 15. The second slide groove 22 also passes through the upper and lower end faces of the slide block 14. The pressure strip 24 slides through the second slide groove 22. The slide block 14 also has insertion holes 16 on both sides that pass through the first slide groove 15. The insertion blocks 17 on both sides extend through the insertion holes 16 to the outside of the slide block 14 and abut against the inner wall of the slide frame 13.

[0035] After clamping the plastic parts connected by the axial sleeves at both ends, slide the slide blocks 14 in the slide rail frames 13 on both sides, and control the slider 23 on the mounting ring 25 to slide in the second groove 22 on the slide block 14. This allows the two plastic parts on the slide rail frames 13 to be symmetrical along the axis of the two rotating cylinders 26 and to stably connect the sleeves. Then, rotate the stud 21 to move the frame plate 19 down. The downward movement of the frame plate 19 will cause the rotating plate 20 to rotate and push the insert blocks 17 on both sides of the first groove 15 on the slide block 14 away from each other until the insert blocks 17 extend through the insertion hole 16 to the outside of the slide block 14 and abut against the inner wall of the slide rail frame 13. This allows the slide block 14 to be positioned relative to the slide rail frame 13. The frame plate 19 moves downward, causing the pressure strip 24 to move downward and pass through the slide groove 22 to abut against the upper end of the slider 23 inside the slide groove 22. This positions the slider 23, the mounting ring 25, and the rotating cylinder 26, ensuring that the two plastic parts clamped in the rotating cylinders 26 on both sides are coaxial. Then, the two slide frames 13 on both sides are controlled to move closer to each other, so that the coaxial parts on both sides can be connected by a clamp. The plastic parts with stable positions can move closer to each other and connect with the clamp. Then, by adjusting the position of the laser welding equipment 8, laser welding is performed on the connection of the plastic parts clamp on both sides, which effectively improves the versatility and ensures that laser welding of various plastic parts with different shapes is possible.

[0036] Example 5: Figures 1-9 As shown, the present invention discloses a fixture for laser welding of plastic parts. Compared with embodiment four, this embodiment discloses the structure of the linkage component.

[0037] The linkage assembly includes guide groove 1 41, guide groove 2 42, top seat 46, and sliding frame 47. Guide groove 1 41 is opened on the left and right sides of the base 1, and guide groove 2 42 is opened on the front and rear sides of the base 1. The top seat 46 is slidably disposed in the guide groove 1 41 on the left and right sides, and the sliding frame 47 is slidably disposed in the guide groove 2 42 on the front and rear sides. The front and rear ends of the top seat 46 on the left and right sides are respectively rotatably connected to the left and right ends of the sliding frame 47 on the front and rear sides. The clamping plate 48 is connected to the sliding frame 47. The top seat 46 on both sides and the sliding frame 13 on both sides cooperate and abut against each other on the opposite side.

[0038] A slide rod bracket 43 is installed on the lower end face of the base 1 below the guide groove 41. A sleeve 2 44 is slidably sleeved on the slide rod bracket 43. A spring 2 45 sleeved on the outside of the slide rod bracket 43 is connected between the sleeve 2 44 and the two sides of the slide rod bracket 43 at their far ends. A top seat 46 is connected to the upper end of the sleeve 2 44. A slide frame 47 slides in the guide groove 2 42 and its lower end extends to the bottom of the base 1. A rotating plate 3 49 is located below the base 1, and the end of the rotating plate 3 49 away from the slide frame 47 is rotatably connected to the sleeve 2 44.

[0039] By controlling the slide frames 13 on both sides to first move closer together, the plastic parts that are regularly shaped and connected by a snap-fit ​​mechanism and are placed on the base 1 are centered and straightened from left to right. Then, the slide frames 13 on both sides are moved away from each other, so that the slide frames 13 on both sides abut against the top seats 46 on both sides and move away from each other. This also causes the sleeve seats 44 on both sides to move away from each other and compress the spring 45, thereby causing the rotating plate 49 to rotate and pull the clamping plates 48 on the front and rear sides to move closer together. This achieves the front and rear straightening and clamping of the regularly shaped plastic parts that are straightened from left to right. In this way, by adjusting the position of the laser welding equipment 8, the welding of regularly shaped plastic parts that are open and closed from left to right can be achieved, which improves versatility and reduces the cost of use.

[0040] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A fixture for laser welding of plastic parts, comprising a base (1), characterized in that, The base (1) has symmetrical sliding rail frames (13) on both sides. Each sliding rail frame (13) has a sliding seat (14) in it. The sliding seat (14) has symmetrical sliding inserts (17) on both sides that abut against the inner wall of the sliding rail frame (13). The sliding seat (14) also has a sliding mounting ring (25). The mounting ring (25) has a rotating cylinder (26) rotatably fitted inside it. The sliding seat (14) has a positioning component, which is used to synchronously fix the positions of the sliding seat (14) and the mounting ring (25). Multiple clamping rods (40) are arranged in an array inside the rotating drum (26). A driving component is provided on the base (1). The driving component is used to drive the two side slide frames (13) to move closer or further apart. A clamping component is provided on the ring disc (27). The clamping component is used to drive each clamping rod (40) to move closer together and clamp the plastic part. Clamping plates (48) are provided on the front and rear sides of the base (1). A linkage component is provided on the base (1). The linkage component is used to drive the clamping plates (48) on the front and rear sides to move closer together and clamp the plastic part when the two side slide frames (13) move further apart.

2. A fixture for laser welding of plastic parts according to claim 1, characterized in that, A bracket (2) is installed on the rear side of the base (1). An x-axis slide rail (3) is installed on the bracket (2), and an x-axis guide block (4) is slidably arranged inside the x-axis slide rail (3). A y-axis slide rail (5) is installed below the x-axis slide rail (3), and a y-axis guide block (6) is slidably arranged inside the y-axis slide rail (5). A telescopic component (7) is installed at the extension end of the y-axis guide block (6) below the y-axis slide rail (5), and a laser welding device (8) is installed at the lower output end of the telescopic component (7).

3. A fixture for laser welding of plastic parts according to claim 1, characterized in that, The drive assembly includes a slide block frame (9), a servo motor (10), a bidirectional lead screw (11), and a sleeve (12). The slide block frame (9) is installed on the front and rear sides of the base (1) and arranged parallel to each other on the front and rear sides of the slide rail frames (13). The servo motor (10) is installed on one end of the slide block frame (9). One end of the bidirectional lead screw (11) is connected to the output end of the servo motor (10), and the other end is rotatably installed on the slide block frame (9). The sleeve (12) is connected to the front and rear sides of the slide rail frame (13). The sleeve (12) is threaded on the outside of the bidirectional lead screw (11) and slidably sleeved on the outside of the slide block frame (9). The threads on the outer sides of the bidirectional lead screw (11) are turned in opposite directions. The sleeves (12) on the slide rail frames (13) on both sides are symmetrically threaded on the outer sides of the two ends of the bidirectional lead screw (11).

4. A fixture for laser welding of plastic parts according to claim 1, characterized in that, The positioning assembly includes a slide groove (15), inserts (17), a slide rod bracket (18), a frame plate (19), studs (21), a slide groove (22), and a slider (23). The slide groove (15) is formed on the slide base (14). Two inserts (17) are symmetrically arranged at both ends of the slide groove (15), and the ends of the inserts (17) on both sides penetrate the slide base (14) and abut against the inner wall of the slide frame (13). The slide rod bracket (18) is connected to the slide base (14). The frame plate (19) is slidably sleeved on the outside of the slide rod bracket (18), and the two ends of the lower side of the frame plate (19) are aligned with the slide base (14). Rotating plate 1 (20) is rotated between the two insert blocks (17). The stud (21) is rotatably mounted on the slide (14). The frame plate (19) is threaded on the outside of the stud (21). The second slide groove (22) is opened on the slide (14) and is parallel to the first slide groove (15). The slider (23) is slidably disposed in the second slide groove (22). The lower end of the slider (23) extends to the bottom of the slide (14). The mounting ring (25) is connected to the extended end of the slider (23). The lower end face of the frame plate (19) is connected to the pressure strip (24), and the pressure strip (24) and the upper end face of the slider (23) are in contact.

5. A fixture for laser welding of plastic parts according to claim 4, characterized in that, The first slide groove (15) penetrates the upper and lower end faces of the slide block (14). The first rotating plate (20) penetrates and rotates within the first slide groove (15). The second slide groove (22) also penetrates the upper and lower end faces of the slide block (14). The pressure strip (24) slides through the second slide groove (22). The slide block (14) is also provided with insertion holes (16) that penetrate the first slide groove (15) on both sides. The insertion blocks (17) on both sides extend through the insertion holes (16) to the outside of the slide block (14) and abut against the inner wall of the slide frame (13).

6. A fixture for laser welding of plastic parts according to claim 1, characterized in that, The clamping assembly includes a collar (29), a guide rod (32), a slip ring (33), and a telescopic component (34). The collar (29) is connected to the mounting ring (25) and is rotatably fitted on the outside of the rotating cylinder (26). The guide rod (32) is connected to the end of the collar (29) away from the mounting ring (25) and is arranged in a circumferential array. The slip ring (33) is slidably fitted on the outside of each guide rod (32). The telescopic component (34) is installed on the collar (29), and the output end of the telescopic component (34) is connected to the slip ring (33). A rotating plate (38) is rotatably connected between the slip ring (33) and each clamping rod (40).

7. A fixture for laser welding of plastic parts according to claim 6, characterized in that, A connecting rod (28) is connected to the mounting ring (25), and a collar (29) is connected to the connecting rod (28). A ring disc (27) is connected to the end of the rotating cylinder (26) away from the mounting ring (25). The collar (29) is rotatably sleeved on the outside of the ring disc (27). A plurality of slide rod brackets (35) are arrayed on the end of the ring disc (27) away from the mounting ring (25). The clamping rod (40) is slidably sleeved on the outside of the slide rod bracket (35) on its respective side. A spring (37) sleeved on the outside of the slide rod bracket (35) is connected between the clamping rod (40) and the outer end of the slide rod bracket (35) away from the center of the ring disc (27).

8. A fixture for laser welding of plastic parts according to claim 6, characterized in that, A gear ring (50) is fitted on the outer side of the rotating drum (26). Servo motors (30) are installed on both sides of the mounting ring (25). Gears (31) are fitted on the output end of the servo motors (30), and the gears (31) on both sides are meshed with the gear ring (50) respectively. A mounting seat (36) is slidably fitted on the outer side of the sliding rod frame (35). A mounting groove (39) is opened on the mounting seat (36). The clamping rod (40) is installed in the mounting groove (39) by a bolt. The rotating plate (38) is rotatably connected to the mounting seat (36). The spring (37) is also connected to the mounting seat (36).

9. A fixture for laser welding of plastic parts according to claim 1, characterized in that, The linkage component includes guide groove one (41), guide groove two (42), top seat (46), and sliding frame (47). Guide groove one (41) is opened on the left and right sides of the base (1), guide groove two (42) is opened on the front and rear sides of the base (1), top seat (46) is slidably disposed in guide groove one (41) on the left and right sides, and sliding frame (47) is slidably disposed in guide groove two (42) on the front and rear sides. The front and rear ends of top seat (46) on the left and right sides are respectively rotatably connected to the left and right ends of sliding frame (47) on the front and rear sides with rotating plate three (49). Clamping plate (48) is connected to sliding frame (47). Top seat (46) on both sides and sliding frame (13) on both sides cooperate and abut against each other on the opposite side.

10. A fixture for laser welding of plastic parts according to claim 9, characterized in that, The lower end face of the base (1) is equipped with a slide rod frame four (43) located below the guide groove one (41). A sleeve two (44) is slidably sleeved on the slide rod frame four (43), and a spring two (45) sleeved on the outside of the slide rod frame four (43) is connected between the sleeve two (44) and the two sides of the slide rod frame four (43) at their far ends. The top seat (46) is connected to the upper end of the sleeve two (44). The slide frame (47) slides in the guide groove two (42), and its lower end extends to the bottom of the base (1). The rotating plate three (49) is located below the base (1), and the end of the rotating plate three (49) away from the slide frame (47) is rotatably connected to the sleeve two (44).

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