CN119566520A

CN119566520A - A laser head anti-collision coaxial air blowing structure

Info

Publication number: CN119566520A
Application number: CN202411890706.XA
Authority: CN
Inventors: 李高文; 李春云
Original assignee: Wuhan Xinghong Photoelectric Technology Co ltd
Current assignee: Wuhan Xinghong Photoelectric Technology Co ltd
Priority date: 2024-12-20
Filing date: 2024-12-20
Publication date: 2025-03-07

Abstract

The invention relates to an anti-collision coaxial blowing structure of a laser head, which comprises a spring cylinder, a universal ball head and a coaxial blowing cylinder, wherein a pressing-down air ring and a compression spring are arranged in the spring cylinder, the compression spring is sleeved outside the pressing-down air ring, a plurality of side holes are formed in the pressing-down air ring, through holes are formed in the spring cylinder, an air inlet nozzle is arranged outside the through holes, an insulating sleeve is arranged at the lower end of the compression spring, the insulating sleeve is sleeved outside the lower end of the pressing-down air ring, the upper end of the pressing-down air ring is abutted to the top of the spring cylinder, a hollow cylindrical cylinder is arranged inside the universal ball head, the outer side of the universal ball head is arc-shaped, a universal ball sleeve and a conducting piece are arranged outside the universal ball head, the coaxial blowing cylinder is fixedly connected with the lower end of the universal ball head, the hollow cylindrical cylinder inside the pressing-down air ring and the universal ball head is communicated with the coaxial blowing cylinder, and the universal ball head is in sliding contact with the insulating sleeve, and the upper end of the universal ball head is abutted to the insulating sleeve.

Description

Laser head anticollision coaxial blowing structure

Technical Field

The invention relates to the technical field of laser welding, in particular to an anti-collision coaxial blowing structure of a laser head.

Background

With the development of laser welding, the laser welding market is already a highly competitive market, and the requirements of the manufacturing industry on welding technology are increasing. The traditional welding method (such as arc welding and ultrasonic welding) has some limitations, such as over-high temperature, large deformation, unstable weld quality and the like in the welding process, and the laser welding, especially the high-power welding, is most prone to generate splashing. The particles generated by splashing can be adhered to the surfaces of a molten pool and a workpiece, so that the surface roughness is easy to change, a parent metal is scratched, the clean environment in the gun head is polluted, the service life of an optical lens is influenced, the phenomenon of sudden collision of a laser head can occur during the working and debugging of the laser head along with the increasing complexity of the working condition of the laser welding on site, and a plurality of safety accidents and economic losses can be generated. The splash and collision phenomena are controlled, and the method becomes a link which cannot be ignored in the laser processing technology.

Therefore, the invention provides an anti-collision coaxial blowing structure of a laser head, so as to solve the technical problems.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides an anti-collision coaxial blowing structure of a laser head.

The technical scheme for solving the technical problems is that the anti-collision coaxial blowing structure of the laser head comprises a spring cylinder, a universal ball head and a coaxial blowing cylinder;

The spring cylinder is internally provided with a pressing gas ring and a compression spring, the compression spring is sleeved outside the pressing gas ring, the pressing gas ring is provided with a plurality of side holes, the spring cylinder is provided with a through hole, the through hole is externally provided with an air inlet nozzle, the lower end of the compression spring is provided with an insulating sleeve, the insulating sleeve is sleeved outside the lower end of the pressing gas ring, and the upper end of the pressing gas ring is abutted to the top of the spring cylinder;

The inside of universal bulb is equipped with hollow cylinder, the outside of universal bulb is arc bulb form, the outside of universal bulb is provided with universal ball cover, switches on the piece, coaxial air blowing jar with the lower extreme fixed connection of universal bulb, push down the inside hollow cylinder of gaseous ring, universal bulb, coaxial air blowing jar and communicate with each other, universal bulb with universal ball cover sliding contact, universal bulb's upper end with insulating sleeve butt can contact with lower pressure gas ring when the universal bulb receives the power to upwards move, can contact with the switch on the piece when the universal bulb receives the power to the side.

Preferably, the anti-collision coaxial blowing structure of the laser head is characterized in that the conducting piece is in a ring shape, the conducting piece is located between the universal ball sleeve and the spring cylinder, an upper insulating pad is installed between the conducting piece and the spring cylinder, and a lower insulating pad is installed between the conducting piece and the universal ball sleeve.

Preferably, the anti-collision coaxial blowing structure of the laser head is characterized in that the upper insulating pad, the conducting piece, the lower insulating pad and the universal ball sleeve are fixed at the lower end of the spring cylinder through fastening bolts, and the outer part of each fastening bolt is sleeved with a bolt insulating sleeve and an insulating gasket to prevent the fastening bolts from contacting the spring cylinder, the conducting piece and the universal ball sleeve.

Preferably, the anti-collision coaxial blowing structure of the laser head is characterized in that a locking nut is arranged at the upper end of the spring cylinder and used for being installed on the laser head.

Preferably, the anti-collision coaxial blowing structure of the laser head is characterized in that the pressing gas ring, the spring cylinder, the conducting piece, the universal ball head, the coaxial blowing cylinder and the universal ball sleeve are all coaxially arranged.

Preferably, the anti-collision coaxial blowing structure of the laser head further comprises a protection sleeve, wherein the upper end of the protection sleeve is fixedly connected with the spring cylinder, the bottom of the spring cylinder, the conducting piece, the universal ball head and the universal ball sleeve are all located inside the protection sleeve, the lower end of the protection sleeve is provided with a bottom sleeve ring, the inner side of the bottom sleeve ring is fixedly provided with a conductive ring, and the outer part of the universal ball head is fixedly connected with the inner wall of the conductive ring.

Preferably, the anti-collision coaxial blowing structure of the laser head is characterized in that the coaxial blowing cylinder, the universal ball head and the pressing gas ring are all made of metal materials, and the conducting ring, the conducting piece and the spring cylinder are all connected with wires.

Preferably, the anti-collision coaxial blowing structure of the laser head is characterized in that the protective outer sleeve is made of hard insulating materials.

Preferably, the anti-collision coaxial blowing structure of the laser head is characterized in that the protection sleeve is made of soft insulating materials, a trapezoid spring is arranged in the protection sleeve, the universal ball head penetrates through the trapezoid spring, the upper end of the trapezoid spring is abutted to the bottom of the universal ball sleeve, and the lower end of the trapezoid spring is abutted to the conducting ring.

Preferably, the anti-collision coaxial blowing structure of the laser head is characterized in that a positioning clamping groove is formed in the outer side of the lower end of the universal ball head, a clamping ring is arranged on the conducting ring, the clamping ring is clamped into the positioning clamping groove, and the positioning clamping groove can be separated from the clamping ring when the universal ball head is stressed to move.

The beneficial effects of the invention are as follows:

4. The universal performance is strong, the same frequency exchange can be carried out, the change of the original machine type is not influenced, and the economic cost is low.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is a cross-sectional view at A-A in FIG. 1;

FIG. 3 is a perspective view of the present invention;

FIG. 4 is a side view of the present invention;

FIG. 5 is a diagram showing the positional relationship of the hold-down gas ring, the universal ball head, and the universal ball sleeve;

FIG. 6 is a schematic view of the external connection structure of the universal ball head and the universal ball sleeve;

FIG. 7 is a schematic view of the internal connection structure of the universal ball head and the universal ball sleeve;

FIG. 8 is a partial enlarged view at B in FIG. 2;

FIG. 9 is a schematic structural view of another embodiment of the protective outer cover of the present invention;

FIG. 10 is a schematic view of a trapezoidal spring;

fig. 11 is a circuit diagram of the wire connection between the spring barrel, the conducting member and the conducting ring according to the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

1. the air inlet nozzle, 2, the lower compression air ring, 3, the spring cylinder, 4, the upper insulating pad, 5, the conducting piece, 6, the universal ball head, 7, the conducting ring, 8, the coaxial air blowing cylinder, 9, the locking nut, 10, the conducting signal outlet, 11, the compression spring, 12, the insulating sleeve, 13, the lower insulating pad, 14, the universal ball sleeve, 15, the protective outer sleeve, 16, the trapezoidal spring, 17, the positioning clamping groove, 18, the accessory mounting plate, 19, the sealing ring, 20, the fastening bolt, 21, the bolt insulating sleeve, 22, the side hole, 23, the through hole, 24 and the bottom lantern ring.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

As shown in figures 1-11, the anti-collision coaxial blowing structure of the laser head comprises a spring cylinder 3, a universal ball head 6 and a coaxial blowing cylinder 8. The upper end of the spring cylinder 3 is provided with a lock nut 9 for mounting on a laser head.

The inside of the spring cylinder 3 is provided with a lower compression ring 2 and a compression spring 11, the compression spring 11 is sleeved outside the lower compression ring 2, the compression spring 11 is connected with an insulating sleeve 12, and the stability and return reset of the whole structure are ensured through the elasticity between the compression spring 11 and the insulating sleeve. The lower extreme of compression spring 11 is provided with insulating cover 12, and insulating cover 12 cover is established in the lower extreme outside of pushing down gaseous ring 2, and the upper end of pushing down gaseous ring 2 and the top butt of spring cylinder 3. The pressing down gas ring 2 is provided with a plurality of side holes 22, the spring cylinder 3 is provided with a through hole 23, and the air inlet nozzle 1 is arranged outside the through hole 23. The spring cylinder 3 is also provided with a conductive signal outlet 10. The inside of the universal ball head 6 is provided with a hollow cylinder, the coaxial air blowing cylinder 8 is fixedly connected with the lower end of the universal ball head 6, and the lower pressing air ring 2, the hollow cylinder inside the universal ball head 6 and the coaxial air blowing cylinder 8 are communicated. Inert shielding gas enters the lower pressure gas ring 2 through the side holes 22 and is blown out through the coaxial gas blowing tube 8 through the gas inlet nozzle 1 so as to cover the welding molten pool, so that the welding molten pool is protected, the interference and damage of moisture and other dregs in the air to the welding molten pool are prevented, the solidification uniformity of the welding pool is ensured, and splashing is reduced.

The outer side of the universal ball head 6 is provided with a universal ball sleeve 14 and a conducting piece 5, the conducting piece 5 is in a circular ring shape, and the conducting piece 5 is positioned between the universal ball sleeve 14 and the spring cylinder 3. An upper insulating pad 4 is arranged between the conducting piece 5 and the spring cylinder 3, and a lower insulating pad 13 is arranged between the conducting piece 5 and the universal ball sleeve 14. The upper insulating pad 4, the conducting piece 5, the lower insulating pad 13 and the universal ball sleeve 14 are fixed at the lower end of the spring cylinder 3 through the fastening bolt 20, the bolt insulating sleeve 21 and the insulating gasket are sleeved outside the fastening bolt 20, and the fastening bolt 20 is prevented from being contacted with the spring cylinder 3, the conducting piece 5 and the universal ball sleeve 14.

The outer side of the universal ball head 6 is arc-shaped, the universal ball sleeve 14 is matched with the universal ball head 6, the universal ball head 6 is in sliding contact with the universal ball sleeve 14, the contact surface is arc-shaped, and the direction of the universal ball head 6 can be changed at will in the sliding contact process of the two. The pressing gas 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.

The upper end of the universal ball head 6 is abutted with the insulating sleeve 12, the universal ball head 6 is positioned below the lower air compressing ring 2 in normal operation, can be contacted with the lower air compressing ring 2 when the universal ball head 6 is forced to move upwards, and can be contacted with the conducting piece 5 when the universal ball head 6 is forced to move sideways. The outside of the structure is provided with a protective jacket 15, the upper end of the protective jacket 15 is fixedly connected with the spring cylinder 3, and the bottom of the spring cylinder 3, the conducting piece 5, the universal ball head 6 and the universal ball sleeve 14 are all positioned in the protective jacket 15. The lower extreme of protection overcoat 15 is provided with bottom lantern ring 24, and the inboard of bottom lantern ring 24 is fixed with conducting ring 7, and the outside of universal bulb 6 and the inner wall fixed connection of conducting ring 7. The coaxial air blowing cylinder 8, the universal ball head 6 and the pressing air ring 2 are all made of metal materials, so that the conducting ring 7 is electrically conducted with the universal ball head 6, and the conducting ring 7, the conducting piece 5 and the spring cylinder 3 are all connected with wires.

When the coaxial air blowing cylinder 8 suddenly suffers from a transverse impact, the connection characteristic of the universal ball head 6 and the universal ball sleeve 14 can lead to the transverse deflection of the universal ball head 6, the universal ball head 6 is in communication contact with the conducting piece 5, when the coaxial air blowing cylinder 8 suddenly suffers from a longitudinal impact, the universal ball head 6 can deflect upwards to be in communication contact with the lower air pressing ring 2, and the lower air pressing ring 2 is in connection with the spring cylinder 3, so that the final conductive ring 7 is electrically connected with the spring cylinder 3. As shown in fig. 11, the conducting ring 7, the conducting member 5 and the spring barrel 3 are respectively connected by wires, the wire bundles are converged at the conducting signal outlet 10 after being combined and led out, and are connected to an external control system, the three wires are led out, and are in a normally open state when in a normal state, and when the abnormal state occurs, conducting signals are transmitted out, so that the device control system can complete the control of the optical device fed back in time to the whole device, and the device is stopped in time. The spring force of the compression spring 11 can automatically reset after the occurrence of the crash event.

The outer side of the lower end of the universal ball head 6 is provided with a positioning clamping groove 17, the conducting ring 7 is provided with a clamping ring, the clamping ring is clamped in the positioning clamping groove 17, and the positioning clamping groove 17 can be separated from the clamping ring when the universal ball head 6 is subjected to a large force (such as impact). The positioning clamping groove 17 and the clamping ring can be arranged to facilitate positioning during resetting, clamping sounds are generated when the clamping ring is clamped into the positioning clamping groove 17 during resetting, the reset positioning can be judged through the sounds, and meanwhile, the coaxial air blowing cylinder 8 can be pushed upwards by a human hand to feel thrust damping to judge.

The protective sheath 15 is made of hard insulating material. As an example of the fixing manner of the protective cover 15, two accessory mounting plates 18 are fixed on the outer side of the spring cylinder 3 through bolts, the air inlet nozzle 1 and the conductive signal outlet 10 are respectively arranged on the two accessory mounting plates 18, and the upper edge folding part of the protective cover 15 is clamped in a gap between the accessory mounting plates 18 and the spring cylinder 3, so that the protective cover is fixed. The top of the protective jacket 15 is provided with a circle of groove, and a sealing ring 19 is arranged in the groove to prevent inert gas from overflowing.

As an example of the material selection of the protective cover 15, as shown in fig. 9 and 10, the protective cover 15 is made of soft insulating material, a trapezoid spring 16 is provided in the protective cover 15, the shaft section of the trapezoid spring 16 is in a trapezoid shape, the universal ball head 6 passes through the inside of the trapezoid spring 16, the upper end of the trapezoid spring 16 is abutted with the bottom of the universal ball sleeve 14, and the lower end of the trapezoid spring 16 is abutted with the conductive ring 7. When the coaxial air blowing tube 8 suddenly suffers from transverse impact, the coaxial air blowing tube 8 rotates around the center point of the universal ball sleeve 14, the upper end of the universal ball head 6 swings synchronously, the side surface of the top of the universal ball head 6 is communicated with the conducting piece 5, a conducting signal is transmitted and timely stopped, and meanwhile the risk that the coaxial air blowing tube 8 is broken is avoided. When the coaxial air blowing cylinder 8 rotates around the center point of the universal ball sleeve 14, the lower ends of the conducting ring 7 and the trapezoidal spring 16 deviate, the trapezoidal spring 16 is compressed, and the trapezoidal spring 16 can automatically push the coaxial air blowing cylinder 8 to reset after the coaxial air blowing cylinder returns to normal. When the coaxial air blowing cylinder 8 suddenly suffers from longitudinal impact, the universal ball head 6 will deflect upwards to be in communication contact with the lower air pressing ring 2, and the conducting signal is transmitted and stopped timely.

In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims

1. A laser head anti-collision coaxial air blowing structure, characterized by comprising 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 air blowing structure according to claim 1 is characterized in that: the conductive part (5) is in a circular ring shape, the conductive part (5) is located between the universal ball sleeve (14) and the spring tube (3), an upper insulating pad (4) is installed between the conductive part (5) and the spring tube (3), and a lower insulating pad (13) is installed between the conductive part (5) and the universal ball sleeve (14).

3. The laser head anti-collision coaxial blowing structure according to claim 2 is characterized in that: the upper insulating pad (4), the conductive part (5), the lower insulating pad (13), and the universal ball sleeve (14) are fixed to the lower end of the spring tube (3) by a fastening bolt (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 tube (3), the conductive part (5), and the universal ball sleeve (14).

4. The laser head anti-collision coaxial 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 mounting on the 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 conductive 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 blowing structure according to claim 1 is characterized in that it also includes a protective jacket (15), the upper end of the protective jacket (15) is 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) are all located inside the protective jacket (15), and 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), and the outer side of the universal ball head (6) is 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 is characterized in that: the coaxial air blowing cylinder (8), the universal ball head (6), and the downward pressure air ring (2) are all made of metal materials, and the conductive ring (7), the conductive part (5), and the spring cylinder (3) are all connected with 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 hard insulating material.

9. The laser head anti-collision coaxial blowing structure according to claim 7 is characterized in that: the protective jacket (15) is made of soft insulating material, a trapezoidal spring (16) is arranged inside the protective jacket (15), the universal ball head (6) passes through the inside 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 arranged on the outer side of the lower end of the universal ball head (6), and a retaining ring is arranged on the conductive ring (7), and the retaining ring is inserted into the positioning groove (17), and the positioning groove (17) can be separated from the retaining ring when the universal ball head (6) is moved by force.