CN111590195B

CN111590195B - Hand-held type laser beam machining head

Info

Publication number: CN111590195B
Application number: CN202010586939.6A
Authority: CN
Inventors: 李启同; 段遵虎
Original assignee: Shenzhen Lanlian Technology Co ltd
Current assignee: SHENZHEN LANLIAN TECHNOLOGY Co.,Ltd.
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2022-03-04
Anticipated expiration: 2040-06-24
Also published as: CN111590195A

Abstract

The invention discloses a handheld laser processing head, and particularly relates to the field of laser processing. According to the invention, the fixing mechanism is arranged, so that a worker drives the spherical movable block to linearly move along the transverse support frame by using the handheld mechanism, and the spring telescopic block pushes the support type beam to be supported at the central position of the inner cavity of the transverse movable groove, so that the stability of linear laser welding and cutting on materials is relatively improved.

Description

Hand-held type laser beam machining head

Technical Field

The invention relates to the technical field of laser processing, in particular to a handheld laser processing head.

Background

Laser engraving is the most common application of a laser system, and can be roughly divided into laser thermal processing and photochemical reaction processing according to the interaction mechanism of a laser beam and a material, wherein the laser thermal processing refers to the processing process completed by utilizing the heat effect generated by the projection of the laser beam on the surface of the material, and comprises laser welding, laser engraving and cutting, surface modification, laser marking, laser drilling, micro processing and the like; the photochemical reaction processing refers to the laser beam irradiating the object, the processing process of photochemical reaction is initiated or controlled by high-energy photons of high-density laser, including photochemical deposition, stereolithography, laser engraving and etching, etc., the laser processing uses the energy of light to reach high energy density on the focus after being focused by a lens, the processing is processed by the photothermal effect, the laser processing does not need tools, has fast processing speed and small surface deformation, can process various materials, the materials are processed by the laser beam, such as punching, cutting, scribing, welding, heat treatment, etc., some substances with metastable state energy level can absorb the light energy under the excitation of external photons, the number of atoms in high energy level is larger than the number of atoms in low energy level-the particle number is reversed, if a beam is irradiated, the energy of the photons is equal to the difference corresponding to the two energies, and then the stimulated radiation can be generated, a large amount of light energy is output.

Need use laser cutting and welding at the in-process of part welding and cutting, traditional large-scale processing machine is unsuitable for family expenses or workshop use on the market, so they can preferentially use hand-held type laser machining equipment to carry out corresponding laser cutting and welding, traditional hand-held type laser machining equipment is though the cost is lower, it is comparatively convenient during the use, but the new hand is higher when using the hand-held type laser machining equipment, it is difficult to cut and weld the straight line, influence staff's actual processing and use.

Disclosure of Invention

In order to overcome the above-mentioned defects in the prior art, an embodiment of the present invention provides a handheld laser processing head, in which a fixing mechanism is provided, a worker uses the handheld mechanism to drive a spherical movable block to make a linear motion along a horizontal support frame, and a spring retractable block pushes a support-type beam to be supported at a central position of an inner cavity of a horizontal movable slot, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a handheld laser processing head comprises a laser processing handle, wherein a laser processing connector is fixedly mounted at one end of the laser processing handle, a double-cambered-surface mounting groove is formed in the outer wall of the laser processing handle, a connecting mechanism is fixedly mounted on the outer wall of the double-cambered-surface mounting groove, a handheld mechanism is fixedly mounted at the bottom of the laser processing handle through the connecting mechanism, a supporting mechanism is fixedly mounted at the bottom of the double-cambered-surface mounting groove, a dismounting mechanism is fixedly mounted at the bottom of the handheld mechanism, and a fixing mechanism is fixedly mounted at the bottom of the dismounting mechanism;

the fixing mechanism comprises a transverse supporting frame, a transverse movable groove is formed in the transverse supporting frame, a spherical movable block is connected to an inner cavity of the transverse movable groove in a sliding mode, spring telescopic blocks are fixedly mounted on two sides of the inner cavity of the transverse movable groove, a supporting type cross beam is fixedly mounted at one end of each spring telescopic block, a connecting type fixing disc is mounted at one end, away from the corresponding spring telescopic block, of each supporting type cross beam through bolts, the connecting type fixing discs are fixedly mounted on the outer wall of the spherical movable block through bolts, a bottom sucking disc is fixedly mounted at the bottom of the transverse supporting frame, a fitting type protective edge is fixedly mounted at the bottom of the bottom sucking disc, the bottom sucking disc and the fitting type protective edge are arranged in an integrated mode, a side indicating rod is arranged between the bottom sucking disc and the transverse supporting frame, and a rotary sleeve block is fixedly mounted at one end of the side indicating rod, the rotary sleeve block is rotatably connected to the top of the bottom sucking disc.

In a preferred embodiment, the number of the spring expansion blocks is two, the two spring expansion blocks are arranged in mirror symmetry with respect to the vertical center line of the transverse support frame, the support-type cross beam is fixedly installed at one end of a spring in each spring expansion block through a bolt, and the support-type cross beam is connected to the inner cavity of the transverse movable groove through the adjacent spring expansion blocks in a sliding manner.

In a preferred embodiment, the handheld mechanism includes a first semicircular supporting cover, a wrist moving groove is formed in the first semicircular supporting cover, an overhead protective edge is fixedly mounted on one side of the first semicircular supporting cover, a handheld fixed handle is fixedly mounted at the bottom of an inner cavity of the wrist moving groove, a fixed sleeve block is fixedly mounted on the outer wall of the handheld fixed handle through a bolt, and a cambered rubber sleeve block is sleeved on the outer wall of the fixed sleeve block.

In a preferred embodiment, the connecting mechanism includes a first connecting ring, a second connecting ring is fixedly mounted on one side of the first connecting ring, a first fixing rod is welded on one side of the first connecting ring, a second fixing rod is welded on one side of the second connecting ring, and ends of the first fixing rod and the second fixing rod, which are far away from the first connecting ring, are welded to each other.

In a preferred embodiment, the supporting mechanism comprises a second semicircular supporting cover, a spherical hinge seat is fixedly mounted at the top of the second semicircular supporting cover, a supporting bearing is fixedly mounted at the top of the spherical hinge seat, and the second semicircular supporting cover is rotatably connected to the bottom of the supporting bearing through the spherical hinge seat.

In a preferred embodiment, the inner cavity of the support bearing is rotatably connected with a rotating shaft, the rotating shaft is fixedly installed at the bottom of the laser processing handle, one side of the support bearing is fixedly installed with a plurality of plastic connecting rods, and the plastic connecting rods are fixedly installed at the top of the second semicircular support cover.

In a preferred embodiment, the disassembling and assembling mechanism comprises a fixed sleeve, a movable mounting groove is formed in the fixed sleeve, a threaded tooth socket is formed in the side wall of an inner cavity of the movable mounting groove, and a threaded connecting rod is connected to the inner cavity of the movable mounting groove through the threaded tooth socket in a threaded mode.

In a preferred embodiment, a support type base is fixedly installed at the bottom of the threaded connecting rod, and a bottom connecting rod is fixedly installed at the bottom of the support type base through a bolt.

In a preferred embodiment, a rubber arc edge strip is fixedly installed at the edge of the outer wall of the second semicircular supporting cover, and a plurality of binding type elastic bands are fixedly installed at the bottom of the second semicircular supporting cover through bolts.

The invention relates to a handheld laser processing head, which has the following specific working principle:

firstly, the arm of a worker is made to penetrate through the second semicircular supporting cover and the constraint elastic band, the arm is held on the outer wall of the cambered rubber sleeve block of the inner cavity of the wrist moving groove, the hand-held fixing handle is used for controlling the laser processing handle and the laser processing connector, and the fixing sleeve and the threaded connecting rod are fixed mutually through the threaded tooth grooves.

And then, the transverse supporting frame and the side indicating rod are adjusted to a proper angle by utilizing the rotary sleeve block, so that the transverse supporting frame is kept parallel to a straight line required to be cut or welded, and then the bottom suction disc and the attaching type protective edge are quickly fixed on the surface of the processed material.

And finally, the worker drives the spherical movable block to do linear motion along the transverse support frame by using the handheld mechanism, and the spring telescopic block pushes the support type beam to be supported at the central position of the inner cavity of the transverse movable groove, so that the laser welding and cutting stability is improved.

The invention has the technical effects and advantages that:

1. according to the invention, the fixing mechanism is arranged, the fixing sleeve and the threaded connecting rod are mutually fixed through the threaded tooth socket, the transverse supporting frame and the side indicating rod are adjusted to a proper angle by using the rotary sleeve block, so that the transverse supporting frame is parallel to a straight line required to be cut or welded, the bottom sucking disc and the attaching type protective edge are quickly fixed on the surface of a processed material, a worker drives the spherical movable block to do linear motion along the transverse supporting frame by using the handheld mechanism, the spring telescopic block pushes the supporting type cross beam to be supported at the central position of the inner cavity of the transverse movable groove, and the stability of performing linear type laser welding and cutting on the material is relatively improved;

2. according to the invention, by arranging the handheld mechanism and the supporting mechanism, the hand of a worker is inserted into the inner cavity of the wrist movable groove, and the outer wall of the handheld fixed grip and the cambered rubber sleeve block is held by the palm, so that the laser processing handle and the laser processing connector can rotate and translate more conveniently compared with a pen holding method during processing, the supporting bearing rotates on the outer wall of the rotating shaft rod, the second semicircular supporting cover slightly rotates at the bottom of the supporting bearing by utilizing the spherical hinged seat, the arm support and the angle adjustment of the worker are facilitated, and the operation and support convenience of the laser processing handle and the laser processing connector are relatively improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the bottom of the present invention.

Fig. 3 is a schematic structural diagram of the connecting mechanism and the hand-held mechanism of the present invention.

FIG. 4 is an enlarged view of the portion A of FIG. 3 according to the present invention.

Fig. 5 is a partial cross-sectional view of a laser-machined handle of the present invention.

FIG. 6 is an enlarged view of the portion B of FIG. 5 according to the present invention.

FIG. 7 is a schematic structural view of the mounting and dismounting mechanism and the fixing mechanism of the present invention.

Fig. 8 is a partial structural view of the fixing mechanism of the present invention.

FIG. 9 is an enlarged view of the structure of the portion C of FIG. 8 according to the present invention.

The reference signs are:

1 laser processing handle, 2 laser processing connector, 3 double cambered surface mounting groove, 4 connecting mechanism, 41 first connecting ring, 42 second connecting ring, 43 first fixing rod, 44 second fixing rod, 5 handheld mechanism, 51 first semicircle supporting cover, 52 wrist movable groove, 53 overhead guard edge, 54 handheld fixed handle, 6 supporting mechanism, 61 second semicircle supporting cover, 62 spherical hinged seat, 63 supporting bearing, 64 rotating shaft rod, 65 plastic connecting rod, 7 disassembling and assembling mechanism, 71 fixed sleeve, 72 movable mounting groove, 73 thread tooth groove, 74 thread connecting rod, 75 supporting type base, 76 bottom connecting rod, 8 fixing mechanism, 81 horizontal supporting frame, 82 horizontal movable groove, 83 spherical movable block, 84 spring telescopic block, 85 supporting type beam, 86 connecting type fixed disk, 87 bottom suction cup, 88 laminating type guard edge, 89 side indicating rod, 810 rotating type sleeve block, and rotary type guide block, 9 fixed blocks, 10 cambered rubber blocks, 11 rubber arc edge strips and 12 bound elastic bands.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-9 in the specification, the handheld laser processing head of an embodiment of the invention can comprise a laser processing handle 1, one end of the laser processing handle 1 is fixedly provided with a laser processing connector 2, the laser processing handle 1 and the laser processing connector 2 can be connected to corresponding processing equipment, the laser processing handle 1 and the laser processing connector 2 are NTO-MC1000 handheld optical fiber laser cutting heads, the outer wall of the laser processing handle 1 is provided with a double-cambered surface mounting groove 3, the outer wall of the double-cambered surface mounting groove 3 is fixedly provided with a connecting mechanism 4, the bottom of the laser processing handle 1 is fixedly provided with a handheld mechanism 5 through the connecting mechanism 4, the arrangement of the handheld mechanism 5 can improve the convenience of operating the laser processing handle 1 and the laser processing connector 2, the bottom of the double-cambered surface mounting groove 3 is fixedly provided with a supporting mechanism 6, the support mechanism 6 can improve the convenience of arm support of workers, the bottom of the handheld mechanism 5 is fixedly provided with the dismounting mechanism 7, the dismounting mechanism 7 can improve the convenience of dismounting, the bottom of the dismounting mechanism 7 is fixedly provided with the fixing mechanism 8, and the fixing mechanism 8 can improve the convenience of fixing;

the fixing mechanism 8 comprises a transverse supporting frame 81, a transverse movable groove 82 is arranged in the transverse supporting frame 81, a spherical movable block 83 is connected in a sliding manner in the inner cavity of the transverse movable groove 82, spring telescopic blocks 84 are fixedly arranged on two sides of the inner cavity of the transverse movable groove 82, a supporting cross beam 85 is fixedly arranged at one end of each spring telescopic block 84, a connecting fixed disc 86 is fixedly arranged at one end, far away from the corresponding spring telescopic block 84, of each supporting cross beam 85 through bolts, each connecting fixed disc 86 is fixedly arranged on the outer wall of each spherical movable block 83 through bolts, a bottom suction disc 87 is fixedly arranged at the bottom of the transverse supporting frame 81, a fitting type protective edge 88 is fixedly arranged at the bottom of each bottom suction disc 87, the bottom suction discs 87 and the fitting type protective edge 88 are arranged in an integrated manner, a side indicating rod 89 is arranged between each bottom suction disc 87 and the transverse supporting frame 81, and a rotary sleeve block 810 is fixedly arranged at one end of each side indicating rod 89, rotary-type nest block 810 rotates the top of connecting at bottom suction cup 87, the quantity of spring flexible piece 84 is two, two spring flexible pieces 84 all are the mirror symmetry setting about horizontal braced frame 81 is vertical to the central line, supporting type crossbeam 85 passes through the one end of bolt fixed mounting spring in spring flexible piece 84, supporting type crossbeam 85 is through the inner chamber of adjacent spring flexible piece 84 sliding connection at horizontal movable groove 82, two spring flexible pieces 84 can promote corresponding supporting type crossbeam 85 respectively and support the central point of ball-type movable block 83 at horizontal movable groove 82 inner chamber and put, make the staff after the processing is accomplished, laser beam machining handle 1 and laser beam machining connector 2 can be more convenient the recovery normal position.

The hand-held mechanism 5 comprises a first semicircular support cover 51, a wrist moving groove 52 is formed in the first semicircular support cover 51, an overhead protective edge 53 is fixedly installed on one side of the first semicircular support cover 51, a hand-held fixed handle 54 is fixedly installed at the bottom of an inner cavity of the wrist moving groove 52, a fixed sleeve 9 is fixedly installed on the outer wall of the hand-held fixed handle 54 through bolts, a cambered rubber sleeve 10 is sleeved on the outer wall of the fixed sleeve 9, the connecting mechanism 4 comprises a first connecting ring 41, a second connecting ring 42 is fixedly installed on one side of the first connecting ring 41, a first fixing rod 43 is welded on one side of the first connecting ring 41, a second fixing rod 44 is welded on one side of the second connecting ring 42, the first fixing rod 43 and one end of the second fixing rod 44, which is far away from the first connecting ring 41, are welded with each other, the support mechanism 6 comprises a second semicircular support cover 61, a spherical seat 62 is fixedly installed on the top of the second semicircular support cover 61, the top of the spherical hinging seat 62 is fixedly provided with a supporting bearing 63, the second semicircular supporting cover 61 is rotatably connected with the bottom of the supporting bearing 63 through the spherical hinging seat 62, the inner cavity of the supporting bearing 63 is rotatably connected with a rotating shaft 64, the rotating shaft 64 is fixedly arranged at the bottom of the laser processing handle 1, one side of the supporting bearing 63 is fixedly provided with a plurality of plastic connecting rods 65, the plastic connecting rods 65 are fixedly arranged at the top of the second semicircular supporting cover 61, when in use, the hand of a worker is inserted into the inner cavity of the wrist movable groove 52 and grasps the outer walls of the handheld fixed grip 54 and the cambered surface rubber sleeve block 10 by hands, so that the laser processing handle 1 and the laser processing connector 2 can rotate and translate more conveniently compared with a pen holding method during processing, because the arm of the worker penetrates between the second semicircular supporting cover 61 and the constraint type elastic band 12, the binding type elastic band 12 can fix the arm of the worker, the supporting bearing 63 rotates on the outer wall of the rotating shaft rod 64, and the second semicircular supporting cover 61 slightly rotates at the bottom of the supporting bearing 63 by the spherical hinge seat 62, so that the arm of the worker can be supported and the angle of the second semicircular supporting cover can be adjusted conveniently.

Dismouting mechanism 7 includes fixed sleeve 71, movable mounting groove 72 has been seted up to fixed sleeve 71's inside, the inner chamber lateral wall of movable mounting groove 72 is equipped with screw thread tooth's socket 73, there is screw thread connecting rod 74 in the inner chamber of movable mounting groove 72 through screw thread tooth's socket 73 threaded connection, the bottom fixed mounting of screw thread connecting rod 74 has support type base 75, there is end connecting rod 76 in the bottom of support type base 75 through bolt fixed mounting, the outer wall edge fixed mounting of second semicircle support cover 61 has rubber arc strake 11, there are a plurality of constraint type elastic bands 12 bottom the second semicircle support cover 61 through bolt fixed mounting.

The working principle is as follows: firstly, taking out the parts required by the invention for convenient installation and use, when in actual use, the arm of a worker penetrates through the second semicircular supporting cover 61 and the constraint type elastic band 12, holds the part on the outer wall of the cambered rubber sleeve block 10 in the inner cavity of the wrist moving groove 52, controls the laser processing handle 1 and the laser processing connector 2 by using the handheld fixed grip 54, mutually fixes the fixed sleeve 71 and the threaded connecting rod 74 through the threaded tooth groove 73, adjusts the transverse supporting frame 81 and the side indicating rod 89 to proper angles by using the rotary sleeve block 810, ensures that the transverse supporting frame 81 is parallel to a straight line required to be cut or welded, quickly fixes the part on the surface of a processed material by using the bottom suction cup 87 and the joint type protective edge 88, and drives the spherical moving block 83 to do linear motion along the transverse supporting frame 81 by using the handheld mechanism 5, the spring telescopic block 84 pushes the supporting type beam 85 to be supported in the center of the inner cavity of the transverse movable groove 82, and the stability of laser welding and cutting is improved.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. A hand-held laser machining head comprising a laser machining handle (1), characterized in that: the laser processing device is characterized in that a laser processing connector (2) is fixedly mounted at one end of the laser processing handle (1), a double-cambered-surface mounting groove (3) is formed in the outer wall of the laser processing handle (1), a connecting mechanism (4) is fixedly mounted on the outer wall of the double-cambered-surface mounting groove (3), a handheld mechanism (5) is fixedly mounted at the bottom of the laser processing handle (1) through the connecting mechanism (4), a supporting mechanism (6) is fixedly mounted at the bottom of the double-cambered-surface mounting groove (3), a dismounting mechanism (7) is fixedly mounted at the bottom of the handheld mechanism (5), and a fixing mechanism (8) is fixedly mounted at the bottom of the dismounting mechanism (7);

the fixing mechanism (8) comprises a transverse supporting frame (81), a transverse movable groove (82) is formed in the transverse supporting frame (81), a spherical movable block (83) is connected to the inner cavity of the transverse movable groove (82) in a sliding manner, spring telescopic blocks (84) are fixedly mounted on two sides of the inner cavity of the transverse movable groove (82), a supporting cross beam (85) is fixedly mounted at one end of each spring telescopic block (84), a connecting fixed disc (86) is fixedly mounted at one end, far away from the corresponding spring telescopic block (84), of each supporting cross beam (85) through bolts, each connecting fixed disc (86) is fixedly mounted on the outer wall of each spherical movable block (83) through bolts, a bottom sucking disc (87) is fixedly mounted at the bottom of the transverse supporting frame (81), and a laminating protective edge (88) is fixedly mounted at the bottom of the bottom sucking disc (87), the bottom sucking disc (87) and the attaching type protective edge (88) are arranged in an integrated mode, a side indicating rod (89) is arranged between the bottom sucking disc (87) and the transverse supporting frame (81), one end of the side indicating rod (89) is fixedly provided with a rotary sleeve block (810), and the rotary sleeve block (810) is rotatably connected to the top of the bottom sucking disc (87); the quantity of the flexible piece of spring (84) is two, two the flexible piece of spring (84) all is mirror symmetry setting about horizontal braced frame (81) is vertical to the central line, support type crossbeam (85) pass through the one end of bolt fixed mounting spring in the flexible piece of spring (84), support type crossbeam (85) are through the inner chamber of adjacent flexible piece of spring (84) sliding connection at horizontal activity groove (82).

2. A hand-held laser machining head as claimed in claim 1, wherein: handheld mechanism (5) include first semicircle support cover (51), wrist movable groove (52) have been seted up to the inside of first semicircle support cover (51), one side fixed mounting that first semicircle supported cover (51) has overhead safe edge (53), the inner chamber bottom fixed mounting of wrist movable groove (52) has handheld fixed handle (54), the outer wall of handheld fixed handle (54) has fixed nest block (9) through bolt fixed mounting, cambered surface rubber nest block (10) have been cup jointed to the outer wall of fixed nest block (9).

3. A hand-held laser machining head as claimed in claim 1, wherein: the connecting mechanism (4) comprises a first connecting ring (41), a second connecting ring (42) is fixedly mounted on one side of the first connecting ring (41), a first fixing rod (43) is welded on one side of the first connecting ring (41), a second fixing rod (44) is welded on one side of the second connecting ring (42), and the first fixing rod (43) and the second fixing rod (44) are welded to each other at one end far away from the first connecting ring (41).

4. A hand-held laser machining head as claimed in claim 1, wherein: supporting mechanism (6) include that the second semicircle supports cover (61), the top fixed mounting that the second semicircle supported cover (61) has articulated seat of ball-type (62), the top fixed mounting of the articulated seat of ball-type (62) has support bearing (63), the second semicircle supports cover (61) and rotates the bottom of connecting at support bearing (63) through articulated seat of ball-type (62).

5. A hand-held laser machining head as claimed in claim 4, wherein: the inner chamber of support bearing (63) rotates and is connected with rotatory axostylus axostyle (64), rotatory axostylus axostyle (64) fixed mounting is in the bottom of laser beam machining handle (1), one side fixed mounting of support bearing (63) has a plurality of connecting rods (65) of moulding, connecting rod (65) fixed mounting of moulding is at the top of second semicircle support cover (61).

6. A hand-held laser machining head as claimed in claim 1, wherein: dismouting mechanism (7) are including fixed sleeve (71), movable mounting groove (72) have been seted up to the inside of fixed sleeve (71), the inner chamber lateral wall of movable mounting groove (72) is equipped with screw thread tooth's socket (73), the inner chamber of movable mounting groove (72) has threaded connection pole (74) through screw thread tooth's socket (73) threaded connection.

7. A hand-held laser machining head as claimed in claim 6, wherein: the bottom fixed mounting of threaded connection pole (74) has support type base (75), there is end connecting rod (76) support type base (75) bottom through bolt fixed mounting.

8. A hand-held laser machining head as claimed in claim 4, wherein: the edge of the outer wall of the second semicircular supporting cover (61) is fixedly provided with a rubber arc edge strip (11), and the bottom of the second semicircular supporting cover (61) is fixedly provided with a plurality of binding type elastic bands (12) through bolts.