Laser head anti-collision coaxial blowing structure

Abstract

The invention relates to an anti-collision coaxial blowing structure for a laser head. The anti-collision coaxial blowing structure comprises a spring barrel, a universal ball head and a coaxial blowing barrel, a lower compression air ring and a compression spring are installed in the spring barrel, the compression spring sleeves the lower compression air ring, a plurality of side holes are formed in the lower compression air ring, a through hole is formed in the spring barrel, an air inlet nozzle is installed outside the through hole, an insulating sleeve is arranged at the lower end of the compression spring, and the insulating sleeve sleeves the lower end of the lower compression air ring. The upper end of the lower compression gas ring is propped against the top of the spring barrel; a hollow cylinder is arranged in the universal ball head, the outer side of the universal ball head is in an arc-shaped ball head shape, a universal ball sleeve and a conducting piece are arranged on the outer side of the universal ball head, the coaxial air blowing cylinder is fixedly connected with the lower end of the universal ball head, the lower air pressing ring, the hollow cylinder in the universal ball head and the coaxial air blowing cylinder are communicated, and the universal ball head is in sliding contact with the universal ball sleeve. The upper end of the universal ball head abuts against the insulation sleeve.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to an anti-collision coaxial air blowing structure for a laser head. Background Art

[0002] With the development of laser welding, the laser welding market has become a highly competitive market, and the manufacturing industry has higher and higher requirements for welding technology. Traditional welding methods (such as arc welding and ultrasonic welding) have some limitations, such as excessive temperature, large deformation, unstable weld quality, etc. during welding; laser welding, especially high-power welding, is most likely to produce spatter. The particles generated by spatter will also adhere to the molten pool and the surface of the workpiece, which can easily cause changes in surface roughness and scratch the parent material. At the same time, it will pollute the clean environment inside the gun head and affect the service life of the optical lens; as the on-site laser welding conditions become more and more complex, there will be sudden collisions during the debugging of the laser head, which will cause many safety accidents and economic losses. Controlling spatter and collision phenomena has become a link that cannot be ignored in laser processing technology.

[0003] Therefore, the present invention provides a laser head anti-collision coaxial blowing structure to solve the above technical problems. Summary of the invention

[0004] The invention aims at the technical problems existing in the prior art and provides a laser head anti-collision coaxial air blowing structure.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a laser head anti-collision coaxial air blowing structure, comprising a spring cylinder, a universal ball head, and a coaxial air blowing cylinder; A lower pressure air ring and a compression spring are installed inside the spring tube, the compression spring is sleeved on the outside of the lower pressure air ring, a plurality of side holes are provided on the lower pressure air ring, a through hole is provided on the spring tube, an air inlet nozzle is installed outside the through hole, an insulating sleeve is provided at the lower end of the compression spring, the insulating sleeve is sleeved on the outside of the lower end of the lower pressure air ring, and the upper end of the lower pressure air ring abuts against the top of the spring tube; A hollow cylindrical tube is provided inside the universal ball head, and the outer side of the universal ball head is in an arc-shaped ball head shape. A universal ball sleeve and a conductive piece are provided on the outer side of the universal ball head. The coaxial air cylinder is fixedly connected to the lower end of the universal ball head, and the lower pressure air ring, the hollow cylindrical tube inside the universal ball head, and the coaxial air cylinder are communicated with each other. The universal ball head is in sliding contact with the universal ball sleeve, and the upper end of the universal ball head is in contact with the insulating sleeve. When the universal ball head is moved upward by force, it can contact with the lower pressure air ring, and when the universal ball head is moved sideways by force, it can contact with the conductive piece.

[0006] Preferably, in the above-mentioned laser head anti-collision coaxial blowing structure, the conductive part is in a circular ring shape, the conductive part is located between the universal ball sleeve and the spring tube, an upper insulating pad is installed between the conductive part and the spring tube, and a lower insulating pad is installed between the conductive part and the universal ball sleeve.

[0007] Preferably, in the above-mentioned laser head anti-collision coaxial air blowing structure, the upper insulating pad, the conductive part, the lower insulating pad, and the universal ball sleeve are fixed to the lower end of the spring tube by fastening bolts, and the outer sleeve of the fastening bolt is provided with a bolt insulating sleeve and an insulating gasket to prevent the fastening bolt from contacting the spring tube, the conductive part, and the universal ball sleeve.

[0008] Preferably, in the above-mentioned laser head anti-collision coaxial air blowing structure, a locking nut is provided at the upper end of the spring tube for installation on the laser head.

[0009] Preferably, in the above-mentioned laser head anti-collision coaxial air blowing structure, the downward pressure air ring, the spring cylinder, the conductive piece, the universal ball head, the coaxial air blowing cylinder and the universal ball sleeve are all coaxially arranged.

[0010] Preferably, the above-mentioned laser head anti-collision coaxial blowing structure also includes a protective jacket, the upper end of the protective jacket is fixedly connected to the spring tube, the bottom of the spring tube, the conductive part, the universal ball head, and the universal ball sleeve are all located inside the protective jacket, the lower end of the protective jacket is provided with a bottom ring, the inner side of the bottom ring is fixed with a conductive ring, and the outer side of the universal ball head is fixedly connected to the inner wall of the conductive ring.

[0011] Preferably, in the above-mentioned laser head anti-collision coaxial air blowing structure, the coaxial air blowing cylinder, the universal ball head and the downward pressure air ring are all made of metal, and the conductive ring, the conductive part and the spring cylinder are all connected with wires.

[0012] Preferably, in the above-mentioned laser head anti-collision coaxial air blowing structure, the protective jacket is made of hard insulating material.

[0013] Preferably, in the above-mentioned laser head anti-collision coaxial blowing structure, the protective jacket is made of soft insulating material, a trapezoidal spring is arranged inside the protective jacket, the universal ball head passes through the inside of the trapezoidal spring, the upper end of the trapezoidal spring abuts against the bottom of the universal ball sleeve, and the lower end of the trapezoidal spring abuts against the conductive ring.

[0014] Preferably, in the above-mentioned laser head anti-collision coaxial blowing structure, a positioning groove is provided on the outer side of the lower end of the universal ball head, and a retaining ring is provided on the conductive ring. The retaining ring is inserted into the positioning groove, and the positioning groove can be separated from the retaining ring when the universal ball head is moved under force.

[0015] The beneficial effects of the present invention are: 4. It has strong versatility and can be interchanged with the same frequency without affecting the changes of the original model, and has low economic cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A top view of the present invention; Figure 2 for Figure 1 Sectional view at AA in the middle; Figure 3 A perspective view of the present invention; Figure 4 is a side view of the present invention; Figure 5 It is the position relationship diagram of the downward pressure ring, the universal ball head and the universal ball sleeve; Figure 6 It is a schematic diagram of the external connection structure of the universal ball head and the universal ball sleeve; Figure 7 It is a schematic diagram of the internal connection structure of the universal ball head and the universal ball sleeve; Figure 8 for Figure 2 A partial enlarged view of point B in the middle; Fig. 9 It is a schematic structural diagram of another embodiment of the protective jacket of the present invention; Fig.10 It is a structural schematic diagram of a trapezoidal spring; Fig.11 The present invention is a circuit diagram of the wire connection between the spring cylinder, the conductive member and the conductive ring.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Inlet nozzle, 2. Lower pressure air ring, 3. Spring tube, 4. Upper insulating pad, 5. Conductive piece, 6. Universal ball head, 7. Conductive ring, 8. Coaxial air cylinder, 9. Locking nut, 10. Conductive signal outlet, 11. Compression spring, 12. Insulating sleeve, 13. Lower insulating pad, 14. Universal ball sleeve, 15. Protective jacket, 16. Trapezoidal spring, 17. Positioning slot, 18. Accessory mounting plate, 19. Sealing ring, 20. Fastening bolt, 21. Bolt insulating sleeve, 22. Side hole, 23. Through hole, 24. Bottom collar. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] like Figures 1 to 11 As shown, a laser head anti-collision coaxial blowing structure comprises a spring cylinder 3, a universal ball head 6, and a coaxial blowing cylinder 8. A locking nut 9 is provided at the upper end of the spring cylinder 3 for mounting on the laser head.

[0020] The spring tube 3 is internally installed with a lower pressure ring 2 and a compression spring 11. The compression spring 11 is sleeved on the outside of the lower pressure ring 2. The compression spring 11 is connected to an insulating sleeve 12. The elasticity between the two ensures the stability and return of the entire structure. The lower end of the compression spring 11 is provided with an insulating sleeve 12. The insulating sleeve 12 is sleeved on the outside of the lower end of the lower pressure ring 2. The upper end of the lower pressure ring 2 abuts against the top of the spring tube 3. The lower pressure ring 2 is provided with a plurality of side holes 22. The spring tube 3 is provided with a through hole 23. The air inlet nozzle 1 is installed outside the through hole 23. The spring tube 3 is also provided with a conductive signal outlet 10. A hollow cylindrical tube is provided inside the universal ball head 6. The coaxial air blow tube 8 is fixedly connected to the lower end of the universal ball head 6. The hollow cylindrical tubes inside the lower pressure ring 2 and the universal ball head 6 and the coaxial air blow tube 8 are connected. The inert shielding gas is passed through the air inlet nozzle 1 through the side hole 22 into the lower pressure air ring 2 and is blown out through the coaxial air blow tube 8, thereby covering the welding molten pool to protect the welding molten pool, prevent moisture and other slag in the air from interfering with and damaging the molten pool, ensure uniform solidification of the molten pool, and thus reduce spatter.

[0021] The outer side of the universal ball head 6 is provided with a universal ball sleeve 14 and a conducting member 5, the conducting member 5 is in a circular ring shape, and the conducting member 5 is located between the universal ball sleeve 14 and the spring barrel 3. An upper insulating pad 4 is installed between the conducting member 5 and the spring barrel 3, and a lower insulating pad 13 is installed between the conducting member 5 and the universal ball sleeve 14. The upper insulating pad 4, the conducting member 5, the lower insulating pad 13, and the universal ball sleeve 14 are fixed to the lower end of the spring barrel 3 by fastening bolts 20, and the outer sleeve of the fastening bolt 20 is provided with a bolt insulating sleeve 21 and an insulating gasket to prevent the fastening bolt 20 from contacting the spring barrel 3, the conducting member 5, and the universal ball sleeve 14.

[0022] The outer side of the universal ball head 6 is in an arc-shaped ball head shape, the universal ball sleeve 14 is adapted to the universal ball head 6, the universal ball head 6 and the universal ball sleeve 14 are in sliding contact, the contact surface is in an arc shape, and the direction of the universal ball head 6 can be changed at will during the sliding contact between the two. The pressure ring 2, the spring cylinder 3, the conducting member 5, the universal ball head 6, the coaxial air cylinder 8, and the universal ball sleeve 14 are all coaxially arranged.

[0023] The upper end of the universal ball head 6 is in contact with the insulating sleeve 12. During normal operation, the universal ball head 6 is located below the lower pressure air ring 2. When the universal ball head 6 is forced to move upward, it can contact the lower pressure air ring 2. When the universal ball head 6 is forced to move sideways, it can contact the conductive member 5. The structure is provided with a protective jacket 15 on the outside. The upper end of the protective jacket 15 is fixedly connected to the spring cylinder 3. The bottom of the spring cylinder 3, the conductive member 5, the universal ball head 6, and the universal ball sleeve 14 are all located inside the protective jacket 15. The lower end of the protective jacket 15 is provided with a bottom collar 24. The inner side of the bottom collar 24 is fixed with a conductive ring 7. The outer side of the universal ball head 6 is fixedly connected to the inner wall of the conductive ring 7. The coaxial air cylinder 8, the universal ball head 6, and the lower pressure air ring 2 are all made of metal. Therefore, the conductive ring 7 is electrically conductive with the universal ball head 6, and the conductive ring 7, the conductive member 5, and the spring cylinder 3 are all connected with wires.

[0024] When the coaxial air cylinder 8 is suddenly hit laterally, the connection characteristics of the universal ball head 6 and the universal ball sleeve 14 will cause the universal ball head 6 to shift laterally, and the universal ball head 6 will be connected and contacted with the conductive member 5; when the coaxial air cylinder 8 is suddenly hit longitudinally, the universal ball head 6 will shift upward and be connected and contacted with the lower pressure ring 2, and the lower pressure ring 2 is connected to the spring tube 3, so that the conductive ring 7 is finally electrically connected to the spring tube 3. Fig.11 As shown, the conductive ring 7, the conductive member 5, and the spring cylinder 3 are connected with wires, and the wires are gathered at the conductive signal outlet 10 after being bundled and led out, and connected to the external control system, and three core wires are led out. In the normal state, the three wires are normally open between two of them. When the above abnormal state occurs, a conductive signal will be transmitted to the equipment control system to complete the control of the optical equipment with timely feedback of the overall equipment and shut down in time. After the collision event occurs, it can be automatically reset by the elastic force of the compression spring 11.

[0025] A positioning slot 17 is provided on the outer side of the lower end of the universal ball head 6, and a snap ring is provided on the conductive ring 7. The snap ring is inserted into the positioning slot 17. When the universal ball head 6 is subjected to a large force (such as when it is hit), the positioning slot 17 can be separated from the snap ring. The positioning slot 17 and the snap ring are provided to facilitate positioning during resetting. When resetting, there will be a sound when the snap ring is inserted into the positioning slot 17. The resetting and positioning can be determined by the sound. At the same time, it can be determined by manually pushing the coaxial blow tube 8 upward to feel the thrust damping.

[0026] The protective jacket 15 is made of a hard insulating material. As an embodiment of the fixing method of the protective jacket 15, two accessory mounting plates 18 are fixed to the outside of the spring barrel 3 by bolts, and the air inlet nozzle 1 and the conductive signal outlet 10 are respectively installed on the two accessory mounting plates 18. The upper folded edge of the protective jacket 15 is inserted into the gap between the accessory mounting plate 18 and the spring barrel 3, thereby fixing it. A circle of grooves is set on the top of the protective jacket 15, and a sealing ring 19 is installed in the groove to prevent the inert gas from overflowing.

[0027] As an embodiment of selecting the material of the protective jacket 15, Fig. 9 , Fig.10 As shown, the protective jacket 15 is made of soft insulating material, and a trapezoidal spring 16 is arranged inside the protective jacket 15. The axial cross section of the trapezoidal spring 16 is trapezoidal. The universal ball head 6 passes through the interior of the trapezoidal spring 16, and the upper end of the trapezoidal spring 16 abuts against the bottom of the universal ball sleeve 14, and the lower end of the trapezoidal spring 16 abuts against the conductive ring 7. When the coaxial blow tube 8 is suddenly hit laterally, the coaxial blow tube 8 will rotate around the center point of the universal ball sleeve 14, and the upper end of the universal ball head 6 will also swing synchronously. The top side of the universal ball head 6 is connected and contacted with the conductive member 5, and the conductive signal is transmitted and stopped in time, while avoiding the risk of the coaxial blow tube 8 being broken. When the coaxial blow tube 8 rotates around the center point of the universal ball sleeve 14, the conductive ring 7 and the lower end of the trapezoidal spring 16 are offset, and the trapezoidal spring 16 is compressed. After returning to normal, the trapezoidal spring 16 can automatically push the coaxial blow tube 8 to reset. When the coaxial air blower 8 is suddenly hit longitudinally, the universal ball head 6 will deflect upwards and come into contact with the lower pressure air ring 2, a conduction signal is transmitted and the machine is shut down in time.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation of the present invention. In addition, "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A laser head anti-collision coaxial blowing structure, characterized by: It comprises a spring cylinder (3), a universal ball head (6), and a coaxial air blowing cylinder (8); A lower pressure air ring (2) and a compression spring (11) are installed inside the spring tube (3); the compression spring (11) is sleeved on the outside of the lower pressure air ring (2); the lower pressure air ring (2) is provided with a plurality of side holes (22); a through hole (23) is provided on the spring tube (3); an air inlet nozzle (1) is installed outside the through hole (23); an insulating sleeve (12) is provided at the lower end of the compression spring (11); the insulating sleeve (12) is sleeved on the outside of the lower end of the lower pressure air ring (2); and the upper end of the lower pressure air ring (2) abuts against the top of the spring tube (3); The interior of the universal ball head (6) is provided with a hollow cylindrical tube, the outer side of the universal ball head (6) is in the shape of an arc-shaped ball head, the outer side of the universal ball head (6) is provided with a universal ball sleeve (14) and a conducting piece (5), the coaxial air blow tube (8) is fixedly connected to the lower end of the universal ball head (6), the lower pressure air ring (2), the hollow cylindrical tube inside the universal ball head (6), and the coaxial air blow tube (8) are in communication, the universal ball head (6) is in sliding contact with the universal ball sleeve (14), the upper end of the universal ball head (6) is in contact with the insulating sleeve (12), and when the universal ball head (6) is moved upward by force, it can contact the lower pressure air ring (2), and when the universal ball head (6) is moved sideways by force, it can contact the conducting piece (5).

2. The laser head anti-collision coaxial blowing structure according to claim 1, characterized in that: The conductive member (5) is in the shape of a ring and is located between the universal ball sleeve (14) and the spring cylinder (3). An upper insulating pad (4) is installed between the conductive member (5) and the spring cylinder (3), and a lower insulating pad (13) is installed between the conductive member (5) and the universal ball sleeve (14).

3. The laser head anti-collision coaxial air blowing structure according to claim 2 is characterized in that: The upper insulating pad (4), the conductive member (5), the lower insulating pad (13), and the universal ball sleeve (14) are fixed to the lower end of the spring tube (3) via a fastening bolt (20); the outer sleeve of the fastening bolt (20) is provided with a bolt insulating sleeve (21) and an insulating gasket to prevent the fastening bolt (20) from contacting the spring tube (3), the conductive member (5), and the universal ball sleeve (14).

4. The laser head anti-collision coaxial air blowing structure according to claim 1, characterized in that: A locking nut (9) is provided at the upper end of the spring cylinder (3) for being mounted on a laser head.

5. The laser head anti-collision coaxial air blowing structure according to claim 1, characterized in that: The downward pressure air ring (2), the spring cylinder (3), the conducting piece (5), the universal ball head (6), the coaxial air blowing cylinder (8), and the universal ball sleeve (14) are all coaxially arranged.

6. The laser head anti-collision coaxial air blowing structure according to claim 1, characterized in that: It also comprises a protective jacket (15), the upper end of the protective jacket (15) being fixedly connected to the spring tube (3), the bottom of the spring tube (3), the conductive member (5), the universal ball head (6), and the universal ball sleeve (14) being all located inside the protective jacket (15), the lower end of the protective jacket (15) being provided with a bottom collar (24), the inner side of which is fixedly provided with a conductive ring (7), and the outer side of the universal ball head (6) being fixedly connected to the inner wall of the conductive ring (7).

7. The laser head anti-collision coaxial air blowing structure according to claim 6, characterized in that: The coaxial air blower (8), the universal ball head (6), and the downward pressure air ring (2) are all made of metal, and the conductive ring (7), the conductive member (5), and the spring cylinder (3) are all connected to electric wires.

8. The laser head anti-collision coaxial air blowing structure according to claim 7, characterized in that: The protective jacket (15) is made of a hard insulating material.

9. The laser head anti-collision coaxial air blowing structure according to claim 7, characterized in that: The protective jacket (15) is made of a soft insulating material. A trapezoidal spring (16) is arranged inside the protective jacket (15). The universal ball head (6) passes through the interior of the trapezoidal spring (16). The upper end of the trapezoidal spring (16) abuts against the bottom of the universal ball sleeve (14), and the lower end of the trapezoidal spring (16) abuts against the conductive ring (7).

10. The laser head anti-collision coaxial air blowing structure according to claim 8, characterized in that: A positioning groove (17) is provided on the outer side of the lower end of the universal ball head (6), and a snap ring is provided on the conductive ring (7). The snap ring is snapped into the positioning groove (17), and the positioning groove (17) can be separated from the snap ring when the universal ball head (6) is moved under force.

Images