Laser welding positioning device

Abstract

The present invention discloses a laser welding positioning device, and relates to the technical field of welding positioning devices. The present invention comprises a base, and positioning devices for welding and positioning pipe fittings are arranged on the left and right sides of the top of the base, and a protective device for preventing sparks from splashing during welding is arranged on the middle section of the top of the base. The present invention uses a positioning device. During the insertion of the pipe fitting into the positioning device, the pipe fitting resists the sliding clamp block and moves outward. Under the action of the hinged rod, the sliding clamp block pushes the auxiliary fixing device to move away from the swivel. At the same time, the auxiliary fixing device drives the spring of the spring positioning rod to stretch. Under the reaction of the spring elastic force of the spring positioning rod, the auxiliary fixing device pushes the sliding clamp block to clamp the pipe fitting, thereby achieving the effect of fixing the pipe fitting, thereby avoiding the problem of slight position changes between the pipe fittings caused by manually holding the clamp to fix the pipe fitting for welding.

Description

Technical Field

[0001] The invention relates to the technical field of tailor-made welding positioning devices, in particular to a laser tailor-made welding positioning device. Background Art

[0002] Laser processing is a process in which a high-energy laser beam is focused on the surface of the object being processed, thereby causing a change in the shape of the object or a change in the performance of the object. Laser thermal processing refers to various processing processes in which the laser beam acts on the object to cause a rapid thermal effect. It can cut, punch, groove, mark, etc. metal or non-metal materials, and can also weld, surface strengthen, and cut metal materials. Laser processing has many advantages such as fast speed, high processing quality, and high efficiency.

[0003] When existing welders perform laser welding between two pipe fittings, they usually hold the pipe fittings with a handheld clamp for welding. The continuous stimulation of the pipe fittings by high-energy lasers will cause slight position changes to varying degrees between the two pipe fittings. Such position changes directly lead to a decrease in the yield rate of the welded products. Therefore, we propose a laser welding positioning device. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a laser welding positioning device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser welding positioning device, comprising a base, wherein positioning devices for welding and positioning pipe fittings are arranged on the left and right sides of the top of the base, and a protective device for preventing sparks from splashing during the welding process is arranged in the middle section of the top of the base, and a dual-axis motor is arranged below the protective device, and rotating shafts are fixed on the output shafts on the left and right sides of the dual-axis motor, and a gear is fixed on the side of the rotating shaft away from the dual-axis motor, and a collection box is arranged on the back of the protective device.

[0006] Preferably, the positioning device includes a positioning seat, a swivel is rotatably installed on the top of the positioning seat, a gear ring is fixed on the side of the swivel close to the dual-axis motor, the gear ring is meshed with the gear, a fixed groove block and a spring positioning rod are fixed on the front of the swivel, an auxiliary fixing device is slidably installed on the outer side of the spring positioning rod, a sliding clamp block is slidably installed on the inside of the fixed groove block, and the sliding clamp block and the auxiliary fixing device are movably connected via a hinged rod.

[0007] Preferably, there are four fixed slot blocks, which are evenly distributed on the front of the swivel, and a gap is left between the fixed slot blocks and the sliding clamp blocks. The side of the sliding clamp block close to the center of the swivel is made of soft rubber.

[0008] Preferably, the auxiliary fixing device includes a groove ring, a fixing plate, a fixing rod, a slip ring and a clamping device, the slip ring is slidably installed on the outside of the spring positioning rod, the groove ring is fixed on the outside of the slip ring, the fixing plate is embedded in the top of the positioning seat, the fixing rod is embedded in the front of the fixing plate, and the clamping device is arranged on the back of the slip ring.

[0009] Preferably, the clamping device includes a U-shaped frame, an elastic sheet, an oblique thorn plate and a resistance rod, one end of the U-shaped frame is fixed to the front side of the fixed groove block, the elastic sheet is fixed to the other end of the U-shaped frame, the oblique thorn plate is embedded in the bottom of the elastic sheet, and the top of the resistance rod is fixed on the slip ring.

[0010] Preferably, the groove of the groove ring is a trapezoidal groove, and the fixing rod is in contact with the bottom wall of the trapezoidal groove of the groove ring.

[0011] Preferably, the side of the elastic sheet away from the U-shaped frame is arc-shaped, and a slide groove is provided on the arc surface of the elastic sheet, and the bottom of the resistance rod slides inside the slide groove on the arc surface of the elastic sheet away from the U-shaped frame.

[0012] Preferably, the protective device includes a welding ring frame, which is fixed to the top of the base, a welding gun hole is provided on the front of the welding ring frame, a curved protective plate is fixed on the front of the inner wall of the welding ring frame, a splash-proof strip is fixed on the front of the curved protective plate, a discharge port is provided below the inner curved protective plate of the welding ring frame, and auxiliary cleaning devices are provided on the left and right sides of the welding ring frame.

[0013] Preferably, the auxiliary cleaning device includes a bump ring, a flip plate, a support plate, an elastic jet bag and a spring sheet, the bump ring is fixed to the outside of the rotating shaft, the middle part of the flip plate is hinged to the outside of the welding ring frame, the support plate is fixed to the outside of the welding ring frame, the support plate and the flip plate are elastically connected by the spring sheet, the elastic jet bag is embedded in the outside of the welding ring frame, the elastic jet bag is located between the flip plate and the support plate, and the jet nozzle of the elastic jet bag is located on the inner wall of the discharge port.

[0014] Preferably, the anti-splash strip is inclined toward the center direction of the curved protective plate, the bottom of the flip plate is an elastic sheet, the elastic sheet at the bottom of the flip plate is in contact with the bump ring, and a protrusion is provided on the top of the flip plate.

[0015] The present invention provides a laser welding positioning device. It has the following beneficial effects:

[0016] (1) The present invention provides a positioning device. During the process of inserting the pipe into the positioning device, the pipe resists the sliding clamp and moves outward. Under the action of the hinged rod, the sliding clamp pushes the auxiliary fixing device to move away from the swivel. At the same time, the auxiliary fixing device drives the spring of the spring positioning rod to stretch. Under the reaction of the spring elastic force of the spring positioning rod, the auxiliary fixing device pushes the sliding clamp to clamp the pipe, thereby achieving the effect of fixing the pipe. This avoids the problem of slight position changes between the pipes caused by manually holding a clamp to fix the pipe for welding, thereby improving the quality of the pipe welding.

[0017] (2) In the present invention, during the rotation of the positioning device, the fixing rod cooperates with the trapezoidal groove of the groove ring, so that the fixing rod abuts against the slip ring and moves toward the rotating ring. Under the action of the hinged rod, the slip ring drives the sliding clamp to further clamp and fix the pipe fitting, thereby avoiding the problem of position displacement of the pipe fitting during the welding process, thereby improving the stability of the pipe fitting during the welding process.

[0018] (3) In the present invention, when the fixed rod abuts against the slip ring and moves toward the rotating ring, the slip ring drives the abutment rod to move along with it through the cooperation between the abutment rod and the sliding groove on the arc surface of the elastic sheet, so that the abutment rod squeezes the elastic sheet to move downward, and the elastic sheet drives the inclined thorn plate to be close to the pipe fitting, so that when the slip ring moves toward the rotating ring, the slip ring provides an extrusion and push to the pipe fitting in the direction of the protective device through the inclined thorn plate, thereby making the weld between the two pipe fittings tighter, further avoiding the problem of slight position changes between the two pipe fittings, and thus improving the yield rate of the finished welded pipe fittings.

[0019] (4) In the process of laser welding pipe fittings, sparks will be generated by the laser welding gun. The arc protection plate cooperates with the splash-proof strip to block the sparks generated in the welding process, thereby avoiding the sparks from welding flying around and causing injuries to personnel. The splash-proof strip is tilted toward the center of the arc protection plate to deflect the angle of the impact and rebound of the welding sparks, thereby avoiding the sparks from rebounding and splashing to the staff and causing injuries to personnel during the process of the arc protection plate blocking the welding sparks, thereby improving the safety of the laser welding process of pipe fittings.

[0020] (5) In the present invention, during the rotation of the shaft, the protrusion ring cooperates with the flip plate, and the shaft drives the protrusion ring to rotate, so that the protrusion ring hits the flip plate and flips downward, so that the protrusion on the top of the flip plate knocks the arc protection plate, and the arc protection plate and the anti-splash strip vibrate and shake off the spark particles attached to the anti-splash strip, thereby avoiding the spark particles adhering to the anti-splash strip, resulting in a reduced efficiency of the anti-splash strip in blocking sputtering sparks.

[0021] (6) In the process of the flip plate flipping downward, the spring piece is compressed. Through the setting of the elastic jet bag, the flip plate and the spring piece squeeze the elastic jet bag at the same time, and the elastic jet bag sprays gas and sprays air into the discharge port, thereby accelerating the discharge speed of the spark particles in the discharge port. The discharged spark particles will be collected inside the collection box, thereby avoiding the problem of sparks flying during the welding process and the need for manual cleaning, thereby reducing the work intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the present invention as a whole;

[0023] Figure 2 is a schematic diagram of a partial cross section of the positioning device of the present invention;

[0024] Figure 3 It is a schematic diagram of the local structure of the positioning device of the present invention;

[0025] Figure 4 is a schematic diagram of the auxiliary fixing device of the present invention;

[0026] Figure 5 is a schematic diagram of a clamping device of the present invention;

[0027] Figure 6 is a schematic diagram of the protective device of the present invention;

[0028] Figure 7 Schematic diagram of the auxiliary cleaning device of the present invention.

[0029] In the figure: 1. base; 2. double-axis motor; 3. rotating shaft; 4. gear; 5. collecting box; 6. positioning device; 61. positioning seat; 62. auxiliary fixing device; 621. groove ring; 622. fixing plate; 623. fixing rod; 624. slip ring; 63. clamping device; 631. U-shaped frame; 632. elastic sheet; 633. oblique thorn plate; 634. resistance rod; 64. swivel; 65. gear ring; 66. fixed groove block; 67. sliding clamp block; 68. hinged rod; 69. spring positioning rod; 7. protective device; 71. welding ring frame; 72. welding gun hole; 73. arc protection plate; 74. splash bar; 75. discharge port; 76. auxiliary cleaning device; 761. bump ring; 762. flip plate; 763. support plate; 764. elastic jet bag; 765. shrapnel. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See also Figure 1-7The present invention provides a technical solution: a laser welding positioning device, comprising a base 1, a positioning device 6 for welding and positioning pipe fittings is arranged on the left and right sides of the top of the base 1, a protective device 7 for preventing sparks from splashing during welding is arranged in the middle section of the top of the base 1, a dual-axis motor 2 is arranged below the protective device 7, a rotating shaft 3 is fixed on the output shafts on the left and right sides of the dual-axis motor 2, a gear 4 is fixed on the side of the rotating shaft 3 away from the dual-axis motor 2, and a collecting box 5 is arranged on the back of the protective device 7.

[0032] The positioning device 6 includes a positioning seat 61, a swivel 64 is rotatably installed on the top of the positioning seat 61, a gear ring 65 is fixed on the side of the swivel 64 close to the dual-axis motor 2, the gear ring 65 is meshed with the gear 4, a fixed groove block 66 and a spring positioning rod 69 are fixed on the front of the swivel 64, an auxiliary fixing device 62 is slidably installed on the outer side of the spring positioning rod 69, a sliding clamp block 67 is slidably installed inside the fixed groove block 66, there are four fixed groove blocks 66, the four fixed groove blocks 66 are evenly distributed on the front of the swivel 64, a gap is left between the fixed groove block 66 and the sliding clamp block 67, the side of the sliding clamp block 67 close to the center of the swivel 64 is made of soft rubber, the setting of the rubber material of the sliding clamp block 67 increases the friction between the sliding clamp block 67 and the pipe fitting, thereby avoiding the problem of slipping during the welding process of the pipe fitting, and the rubber material part of the sliding clamp block 67 is away from the swivel 64 The side is provided with a chamfer. The chamfer of the rubber material part of the sliding clamp block 67 makes it easier to insert and position the pipe fitting from the positioning device 6. The sliding clamp block 67 and the auxiliary fixing device 62 are movably connected by a hinge rod 68. Through the device of the positioning device 6, during the insertion of the pipe fitting into the positioning device 6, the pipe fitting resists the sliding clamp block 67 and moves outward. Under the action of the hinge rod 68, the sliding clamp block 67 pushes the auxiliary fixing device 62 to move away from the swivel 64. At the same time, the spring of the spring positioning rod 69 is stretched by the auxiliary fixing device 62. Under the reaction of the spring elastic force of the spring positioning rod 69, the auxiliary fixing device 62 pushes the sliding clamp block 67 to clamp the pipe fitting, thereby achieving the effect of fixing the pipe fitting, thereby avoiding the problem of slight position changes between the pipe fittings caused by manually holding a clamp to fix the pipe fitting for welding, thereby improving the quality of the pipe fitting welding.

[0033] The auxiliary fixing device 62 includes a groove ring 621, a fixing plate 622, a fixing rod 623, a slip ring 624 and a pressing device 63. The slip ring 624 is slidably mounted on the outside of the spring positioning rod 69. The groove ring 621 is fixed on the outside of the slip ring 624. The groove of the groove ring 621 is a trapezoidal groove. The fixing plate 622 is embedded in the top of the positioning seat 61. The fixing rod 623 is embedded in the front of the fixing plate 622. The fixing rod 623 contacts the bottom wall of the trapezoidal groove of the groove ring 621. The fixing rod 623 is connected to the groove ring 621 through the fixing rod 623. 1, during the rotation of the positioning device 6, the fixing rod 623 contacts the slip ring 624 and moves toward the rotating ring 64. Under the action of the hinged rod 68, the slip ring 624 drives the sliding clamp block 67 to further clamp and fix the pipe fitting, thereby avoiding the problem of position deviation of the pipe fitting during the welding process, thereby improving the stability of the pipe fitting during the welding process. The clamping device 63 is arranged on the back of the slip ring 624, and the number of the clamping devices 63 corresponds to the number of the fixed groove blocks 66.

[0034] The pressing device 63 includes a U-shaped frame 631, an elastic sheet 632, an oblique thorn plate 633 and a resisting rod 634. One end of the U-shaped frame 631 is fixed to the front of the fixed groove block 66, the elastic sheet 632 is fixed to the other end of the U-shaped frame 631, the oblique thorn plate 633 is embedded in the bottom of the elastic sheet 632, the side of the elastic sheet 632 away from the U-shaped frame 631 is arc-shaped, and a sliding groove is provided on the arc surface of the elastic sheet 632, the top of the resisting rod 634 is fixed on the slip ring 624, and the bottom of the resisting rod 634 slides on the inside of the sliding groove on the arc surface of the elastic sheet 632 away from the U-shaped frame 631. 32. The sliding groove on the arc surface cooperates. When the fixed rod 623 contacts the slip ring 624 and moves toward the rotating ring 64, the slip ring 624 drives the contact rod 634 to move with it, so that the contact rod 634 squeezes the elastic sheet 632 and moves downward. The elastic sheet 632 drives the oblique thorn plate 633 to fit closely to the pipe fitting. As a result, when the slip ring 624 moves toward the rotating ring 64, the slip ring 624 provides an extrusion push to the pipe fitting in the direction of the protective device 7 through the oblique thorn plate 633, thereby making the weld between the two pipe fittings tighter, further avoiding the problem of slight position changes between the two pipe fittings, and thus improving the yield rate of the finished welded pipe fittings.

[0035] The protective device 7 includes a welding ring frame 71, which is fixed to the top of the base 1. A welding gun hole 72 is provided on the front of the welding ring frame 71. A curved protective plate 73 is fixed to the front of the inner wall of the welding ring frame 71. A splash-proof strip 74 is fixed to the front of the curved protective plate 73. The splash-proof strip 74 is inclined toward the center of the curved protective plate 73. There are a plurality of splash-proof strips 74, which are evenly arranged on the front of the curved protective plate 73. Sparks will be generated during the laser welding gun welding process of the pipe fittings. The curved protective plate 73 blocks the sparks generated during the welding process. The arc protection plate 73 is used to block the sparks from welding, thereby preventing the sparks from flying around and causing personal injury. The anti-splash strip 74 is tilted toward the center of the arc protection plate 73 to deflect the angle of the impact and rebound of the welding sparks. This avoids the sparks from rebounding and splashing to the staff during the process of the arc protection plate 73 blocking the welding sparks, thereby improving the safety of the laser welding process of the pipe fittings. A discharge port 75 is provided below the arc protection plate 73 inside the welding ring frame 71, and auxiliary cleaning devices 76 are provided on the left and right sides of the welding ring frame 71.

[0036] The auxiliary cleaning device 76 includes a bump ring 761, a flip plate 762, a support plate 763, an elastic jet bag 764 and a spring 765. The bump ring 761 is fixed to the outer side of the rotating shaft 3. The middle part of the flip plate 762 is hinged to the outer side of the welding ring frame 71. The bottom of the flip plate 762 is an elastic thin sheet. The elastic thin sheet at the bottom of the flip plate 762 contacts the bump ring 761. A protrusion is provided on the top of the flip plate 762. Through the cooperation of the bump ring 761 and the flip plate 762, during the rotation of the rotating shaft 3, the rotating shaft 3 drives the bump ring 761 to rotate, so that the bump ring 761 resists the flip plate 762 and flips downward, so that the protrusion provided on the top of the flip plate 762 knocks the arc protection plate 73, and the arc protection plate 73 and the anti-splash strip 74 vibrate and shake off the spark particles attached to the anti-splash strip 74, thereby avoiding the spark particles from adhering to the anti-splash strip 74, causing the anti-splash strip 74 to be damaged. In order to solve the problem of reduced efficiency of sparks in blocking sputtering, the support plate 763 is fixed on the outer side of the welding ring frame 71, and the support plate 763 and the flip plate 762 are elastically connected by a spring piece 765. The elastic jet bag 764 is embedded in the outer side of the welding ring frame 71, and the elastic jet bag 764 is located between the flip plate 762 and the support plate 763. The jet nozzle of the elastic jet bag 764 is located on the inner wall of the discharge port 75. Through the setting of the elastic jet bag 764, during the downward flipping of the flip plate 762, the spring piece 765 is compressed, and the flip plate 762 and the spring piece 765 squeeze the elastic jet bag 764 at the same time. The elastic jet bag 764 sprays gas and sprays into the discharge port 75, thereby accelerating the discharge speed of the spark particles in the discharge port 75. The discharged spark particles will be collected in the inside of the collecting box 5, thereby avoiding the problem of sparks flying and manual cleaning during the welding process, thereby reducing the work intensity of the workers.

[0037] When in use, the pipe fittings are inserted from the left and right positioning devices 6 respectively, and the welding seam between the pipe fittings is located in the middle of the welding ring frame 71. During the insertion of the pipe fitting into the positioning device 6, the pipe fitting resists the sliding clamp block 67 and moves outward. Under the action of the hinge rod 68, the sliding clamp block 67 pushes the auxiliary fixing device 62 to move away from the swivel 64. At the same time, the auxiliary fixing device 62 drives the spring of the spring positioning rod 69 to stretch. Under the reaction of the spring elastic force of the spring positioning rod 69, the auxiliary fixing device 62 pushes the sliding clamp block 67 to clamp the pipe fitting, thereby achieving the effect of fixing the pipe fitting, thereby avoiding the problem of slight position changes between the pipe fittings caused by manually holding the clamp to fix the pipe fitting for welding, thereby improving the quality of the pipe fitting welding. At the same time, the rubber material setting of the sliding clamp block 67 increases the friction between the sliding clamp block 67 and the pipe fitting, thereby avoiding the problem of slipping during the pipe fitting welding process. The chamfering of the rubber material part of the sliding clamp block 67 makes it easier for the pipe fitting to be inserted and positioned from the positioning device 6.

[0038] When the positioning and clamping of the pipe fitting is completed, the laser welding gun is inserted into the welding ring frame 71 through the welding gun hole 72, and the dual-axis motor 2 is started. The dual-axis motor 2 drives the left and right rotating shafts 3 to rotate, and the rotating shaft 3 drives the gear 4 to rotate. Under the cooperation of the gear 4 and the gear ring 65, the positioning device 6 drives the pipe fitting to rotate, so that the laser welding gun performs laser welding on the pipe fitting, thereby avoiding the problem of difficulty in welding the pipe fitting in the traditional welding process.

[0039] During the rotation of the positioning device 6, the fixing rod 623 cooperates with the trapezoidal groove of the groove ring 621, so that the fixing rod 623 contacts the slip ring 624 and moves toward the swivel ring 64. Under the action of the hinged rod 68, the slip ring 624 drives the sliding clamp 67 to further clamp and fix the pipe fitting, thereby avoiding the problem of position displacement of the pipe fitting during the welding process, thereby improving the stability of the pipe fitting during the welding process.

[0040] At the same time, when the fixed rod 623 contacts the slip ring 624 and moves toward the swivel ring 64, the slip ring 624 drives the contact rod 634 to move along with it, and under the cooperation of the sliding groove on the arc surface of the contact rod 634 and the elastic sheet 632, the contact rod 634 squeezes the elastic sheet 632 to move downward, and the elastic sheet 632 drives the oblique thorn plate 633 to fit closely to the pipe fitting, so that when the slip ring 624 moves toward the swivel ring 64, the slip ring 624 provides an extrusion and push to the pipe fitting in the direction of the protective device 7 through the oblique thorn plate 633, thereby making the weld between the two pipe fittings tighter, further avoiding the problem of slight position changes between the two pipe fittings, and thus improving the yield rate of the finished welded pipe fittings.

[0041] Sparks will be generated during the process of laser welding of pipe fittings by a laser welding gun. The arc protection plate 73 cooperates with the splash-proof strip 74 to block the sparks generated during the welding process, thereby avoiding the problem of sparks flying and causing injuries to personnel. The splash-proof strip 74 is inclined toward the center direction of the arc protection plate 73 to deflect the angle of the impact and rebound of the welding sparks, thereby avoiding the problem of sparks rebounding and splashing to the staff and causing injuries during the process of the arc protection plate 73 blocking the welding sparks, thereby improving the safety of the laser welding process of pipe fittings.

[0042] At the same time, during the rotation of the shaft 3, the shaft 3 drives the protrusion ring 761 to rotate along with it. Under the cooperation of the protrusion ring 761 and the flip plate 762, the protrusion ring 761 contacts the flip plate 762 and flips downward, so that the protrusion provided on the top of the flip plate 762 knocks the arc protection plate 73, and the arc protection plate 73 and the splash guard bar 74 vibrate and shake off the spark particles attached to the splash guard bar 74, thereby avoiding the spark particles from adhering to the splash guard bar 74, causing the splash guard bar 74 to block the splashing. The problem of reduced spark efficiency; at the same time, when the flip plate 762 flips downward, the spring 765 is compressed, and the flip plate 762 and the spring 765 squeeze the elastic jet bag 764 at the same time, and the elastic jet bag 764 sprays gas and sprays into the discharge port 75, thereby accelerating the discharge speed of the spark particles in the discharge port 75. The discharged spark particles will be collected in the collection box 5, thereby avoiding the problem of sparks flying during the welding process and the need for manual cleaning, thereby reducing the work intensity of the workers.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser welding positioning device, comprising a base (1), characterized in that: Positioning devices (6) for positioning the pipe fittings for welding are arranged on the left and right sides of the top of the base (1); a protective device (7) for preventing sparks from splashing during welding is arranged in the middle section of the top of the base (1); a double-axis motor (2) is arranged below the protective device (7); a rotating shaft (3) is fixed on the output shafts on the left and right sides of the double-axis motor (2); a gear (4) is fixed on the side of the rotating shaft (3) away from the double-axis motor (2); and a collecting box (5) is arranged on the back of the protective device (7); The positioning device (6) comprises a positioning seat (61), a rotating ring (64) is rotatably mounted on the top of the positioning seat (61), a gear ring (65) is fixed on the side of the rotating ring (64) close to the dual-axis motor (2), the gear ring (65) is meshed with the gear (4), a fixed groove block (66) and a spring positioning rod (69) are fixed on the front of the rotating ring (64), an auxiliary fixing device (62) is slidably mounted on the outer side of the spring positioning rod (69), a sliding clamp block (67) is slidably mounted inside the fixed groove block (66), and the sliding clamp block (67) and the auxiliary fixing device (62) are movably connected via a hinge rod (68); There are four fixed groove blocks (66), which are evenly distributed on the front of the rotating ring (64). A gap is left between the fixed groove blocks (66) and the sliding clamp blocks (67). The side of the sliding clamp blocks (67) close to the center of the rotating ring (64) is made of soft rubber material. The auxiliary fixing device (62) comprises a groove ring (621), a fixing plate (622), a fixing rod (623), a slip ring (624) and a clamping device (63); the slip ring (624) is slidably mounted on the outside of the spring positioning rod (69); the groove ring (621) is fixed on the outside of the slip ring (624); the fixing plate (622) is embedded in the top of the positioning seat (61); the fixing rod (623) is embedded in the front of the fixing plate (622); and the clamping device (63) is arranged on the back of the slip ring (624); The pressing device (63) comprises a U-shaped frame (631), an elastic sheet (632), an oblique thorn plate (633) and a resisting rod (634), one end of the U-shaped frame (631) is fixed to the front side of the fixed slot block (66), the elastic sheet (632) is fixed to the other end of the U-shaped frame (631), the oblique thorn plate (633) is embedded in the bottom of the elastic sheet (632), and the top of the resisting rod (634) is fixed to the slip ring (624); The groove of the groove ring (621) is a trapezoidal groove, and the fixing rod (623) is in contact with the bottom wall of the trapezoidal groove of the groove ring (621); The side of the elastic sheet (632) away from the U-shaped frame (631) is arc-shaped, and a sliding groove is provided on the arc surface of the elastic sheet (632), and the bottom of the abutment rod (634) slides inside the sliding groove on the arc surface of the elastic sheet (632) away from the U-shaped frame (631).

2. A laser welding positioning device according to claim 1, characterized in that: The protective device (7) comprises a welding ring frame (71), wherein the welding ring frame (71) is fixed on the top of the base (1), a welding gun hole (72) is provided on the front of the welding ring frame (71), a curved protective plate (73) is fixed on the front of the inner wall of the welding ring frame (71), a splash-proof strip (74) is fixed on the front of the curved protective plate (73), a discharge port (75) is provided below the inner curved protective plate (73) of the welding ring frame (71), and auxiliary cleaning devices (76) are provided on the left and right sides of the welding ring frame (71).

3. A laser welding positioning device according to claim 2, characterized in that: The auxiliary cleaning device (76) comprises a convex ring (761), a flip plate (762), a support plate (763), an elastic jet bag (764) and a spring sheet (765); the convex ring (761) is fixed on the outer side of the rotating shaft (3); the middle part of the flip plate (762) is hinged on the outer side of the welding ring frame (71); the support plate (763) is fixed on the outer side of the welding ring frame (71); the support plate (763) and the flip plate (762) are elastically connected via the spring sheet (765); the elastic jet bag (764) is embedded on the outer side of the welding ring frame (71); the elastic jet bag (764) is located between the flip plate (762) and the support plate (763); and the jet nozzle of the elastic jet bag (764) is located on the inner wall of the discharge port (75).

4. The laser welding positioning device according to claim 3, characterized in that: The splash-proof strip (74) is arranged to be inclined toward the center direction of the arc-surface protection plate (73); the bottom of the flip plate (762) is an elastic thin sheet; the elastic thin sheet at the bottom of the flip plate (762) is in contact with the bump ring (761); and a protrusion is arranged on the top of the flip plate (762).

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