A lightweight laser cleaning head with right-angle light output

Abstract

The present invention discloses a light-weight laser cleaning head with right-angle light emission, which specifically relates to the field of laser cleaning technology, and comprises a handle, wherein an optical isolator is arranged inside the handle, a transition tube is arranged at the left end of the handle, a reflective shell is fixedly connected to the left end of the transition tube, and a field mirror is fixedly connected to the lower surface of the reflective shell. The present invention, through the action of a galvanometer motor and a reflective lens, can reflect the light path direction of a laser beam at a right angle of 90° when the optical isolator emits the laser beam, and through the deflection of the galvanometer motor and the focusing action of the field mirror, a cleaning light curtain is formed, and then a dense light spot group can be formed on the focusing surface of the field mirror, thereby improving its cleaning effect. At the same time, a rotary potentiometer can be used to change the cleaning angle. Compared with a traditional laser cleaning head, the laser cleaning head has a compact structure, is adaptable to various complex cleaning environments, and is easy to adjust and use, and prevents interference or collision from occurring, and has an excellent cleaning effect and strong applicability.

Description

Technical Field

[0001] The invention relates to the technical field of laser cleaning, and more specifically to a light laser cleaning head with right-angle light output. Background Art

[0002] At present, laser processing technology, as a clean and efficient new technology, has been widely used in various industrial production and subsequent maintenance and treatment. Laser cleaning, as an important part of it, has a wide range of practical applications and great development prospects in modern industrial production.

[0003] The existing laser cleaning head emits light directly, that is, the light emitting direction is the same as that of the isolator. The advantage of this design is that the cleaning head is easy to hold and is suitable for laser cleaning operations in large operating spaces. However, due to the built-in reflector and galvanometer structure of the direct light cleaning head, as well as the required focal length of the focusing field lens at the end of the cleaning head, when cleaning in narrow spaces such as the inside of a workpiece, the cleaning head will interfere or collide with the workpiece, making it impossible to complete the cleaning, or even damaging the cleaning head, which has brought certain obstacles to the practical application and development of laser cleaning technology. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a lightweight laser cleaning head with right-angle light output. The technical problem to be solved by the present invention is: due to the built-in reflector and galvanometer structure of the existing laser cleaning head, and the required focal length of the focusing field lens at the end of the cleaning head, when cleaning operations are performed in narrow spaces such as the inside of a workpiece, the cleaning head will interfere with or collide with the workpiece, making it impossible to complete the cleaning, or even damaging the cleaning head.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lightweight laser cleaning head with right-angle light output, comprising a handle, an optical isolator is arranged in the handle, a transition tube is arranged at the left end of the handle, the left end of the transition tube is fixedly connected to a reflective shell, the lower surface of the reflective shell is fixedly connected to a field mirror, an organic cover is arranged on the back of the reflective shell, a galvanometer motor is arranged in the organic cover, the output shaft of the galvanometer motor is fixedly connected to a lens clamp, a reflective lens is clamped in the lens clamp, the reflective lens is located on the left side of the optical isolator, a rotary potentiometer is arranged on the upper surface of the transition tube, a switch seat is arranged on the lower surface of the handle, a trachea joint is fixedly connected to the back of the transition tube, and a cover plate is arranged on the front of the reflective shell.

[0006] As a further solution of the present invention: the left and right sides of the inner wall of the lens clamp are clamped with clamping blocks, one end of the clamping block is made of rubber, the other end of the clamping block is fixedly connected to a return spring, one end of the return spring is fixedly connected to the inner wall of the lens clamp, the front side of the clamping block is threadedly connected to a fastening screw, and one end of the back side of the fastening screw overlaps the front side of the inner wall of the lens clamp.

[0007] As a further solution of the present invention: a rubber embedding ring is fixedly connected to the left side surface of the inner wall of the handle, one end of the optical isolator is clamped in the rubber embedding ring, the upper surface of the inner wall of the handle and the lower surface of the inner wall are fixedly connected to a limiting mechanism, a bellows seat is provided at the right end of the handle, and one end of the bellows seat is clamped in the handle.

[0008] As a further solution of the present invention: a plurality of cables are arranged in the handle, the right ends of the plurality of cables are fixedly connected with a connecting head, a connecting thread block is arranged in the corrugated pipe seat, the outer wall of the connecting head is fixedly connected with a threaded arc plate, one end of the threaded arc plate is clamped in the connecting thread block, the outer wall of the connecting thread block is threadedly connected with a limiting thread ring, and one end of the threaded arc plate is threadedly connected with the limiting thread ring.

[0009] As a further solution of the present invention: the limiting mechanism includes a movable frame, a rubber wrapping layer, an inner clamping block, a support spring and an inner cavity; two groove plates are fixedly connected to the left side of the bellows seat, one end of the groove plate is clamped in a groove provided in the inner cavity; a movable frame is provided in the inner cavity, the outer wall of the movable frame overlaps the inner wall of the inner cavity, the top of the movable frame passes through the handle, the upper surface of the inner wall of the movable frame is fixedly connected with the inner clamping block, one end of the inner clamping block is an inclined trapezoidal structure and is clamped in the groove plate, the lower surface of the movable frame is fixedly connected with two support springs, and the bottom ends of the two support springs are fixedly connected to the lower surface of the inner wall of the inner cavity.

[0010] As a further solution of the present invention: the outer wall of the movable frame is provided with a rubber coating, the upper surface of the rubber coating is fixedly connected to the outer wall of the movable frame, and the lower surface of the rubber coating is fixedly connected to the upper surface of the handle.

[0011] As a further solution of the present invention: a paraxial red light element and a coaxial vision CCD element are arranged in the field lens, micro motors are arranged on the back of the paraxial red light element and the back of the coaxial vision CCD element, and a control module is arranged in the field lens.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention, through the action of the galvanometer motor and the reflective lens, can reflect the optical path direction of the laser beam at a right angle of 90° when the optical isolator emits the laser beam, and through the deflection of the galvanometer motor and the focusing action of the field lens, a cleaning light curtain is formed, and then a row of dense light spot groups can be formed on the focusing surface of the field lens, thereby improving its cleaning effect. At the same time, the cleaning angle can be changed by using a rotary potentiometer. Compared with the traditional laser cleaning head, the laser cleaning head has a compact structure, is adaptable to various complex cleaning environments, is easy to adjust and use, and prevents interference or collision from causing damage. It has excellent cleaning effect and strong applicability.

[0014] 2. The present invention can protect the cable and facilitate its connection with the cleaning machine chassis through the action of the bellows seat. At the same time, due to the connection action of the threaded arc plate, the connecting head and the connecting threaded block, the limit threaded ring can facilitate the quick installation and connection or disassembly and separation of the cable, thereby facilitating the removal of the galvanometer motor cover and the disconnection of the cable when the galvanometer motor needs to be repaired or fails, thereby facilitating the removal of the galvanometer motor for inspection, repair or replacement, avoiding the work of disassembling the entire laser cleaning head, shortening the downtime, and greatly improving the cleaning work efficiency.

[0015] 3. The present invention uses the reset spring in the lens clamp to make the clamp block elastically expand and contract, and can automatically clamp and fix the reflective lens. At the same time, the fastening screws can improve the stability of the reflective lens clamping to prevent it from falling off. When the reflective lens is damaged or the laser beam spot size changes and needs to be replaced, the new reflective lens can be quickly and conveniently replaced, avoiding the work of disassembling the entire laser cleaning head, shortening the downtime, and the operation is more user-friendly.

[0016] 4. The present invention can facilitate the quick connection and installation of the bellows seat to one end of the handle through the action of the embedded groove plate, and by pressing the movable frame, the bellows seat can be automatically retracted and displaced through the support spring, thereby releasing the limit of the embedded groove plate, thereby facilitating the quick disassembly of the bellows seat and facilitating the removal and replacement of the optical isolator, which is convenient for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional structure diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the handle of the present invention from a top view;

[0019] Figure 3 Schematic diagram of light path propagation of the optical isolator of the present invention;

[0020] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0021] Figure 5 It is a schematic structural diagram of a cross section of a side view of the limiting mechanism of the present invention;

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the bellows seat of the present invention when viewed from the front;

[0023] Figure 7 It is a structural block diagram of the control module principle of the present invention;

[0024] In the figure: 1 handle, 2 limit mechanism, 201 movable frame, 202 rubber wrapping layer, 203 inner clamping block, 204 supporting spring, 205 inner cavity, 3 embedded groove plate, 4 cable, 5 optical isolator, 6 rubber embedded ring, 7 rotary potentiometer, 8 transition tube, 9 reflection shell, 10 cover plate, 11 field lens, 12 switch seat, 13 bellows seat, 14 machine cover, 15 air pipe joint, 16 galvanometer motor, 17 lens clamp, 18 reflective lens, 19 paraxial red light element, 20 coaxial visual CCD element, 21 reset spring, 22 fastening screw, 23 clamping block, 24 limit threaded ring, 25 connecting threaded block, 26 threaded arc plate, 27 connector, 28 micro motor, 29 control module. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1-7 As shown, the present invention provides a light-weight laser cleaning head with right-angle light output, comprising a handle 1, an optical isolator 5 is arranged in the handle 1, a transition tube 8 is arranged at the left end of the handle 1, a reflective shell 9 is fixedly connected to the left end of the transition tube 8, a field lens 11 is fixedly connected to the lower surface of the reflective shell 9, a machine cover 14 is arranged on the back of the reflective shell 9, a galvanometer motor 16 is arranged in the machine cover 14, a lens clamp 17 is fixedly connected to the output shaft of the galvanometer motor 16, a reflective lens 18 is clamped in the lens clamp 17, and the reflective lens 18 is located at the optical isolator. On the left side of the device 5, a rotary potentiometer 7 is arranged on the upper surface of the transition tube 8. Through the action of the rotary potentiometer 7, it is convenient to control the operation of the galvanometer motor 16 to adjust the swing angle of the reflective lens 18 to change the cleaning width as needed, making it more user-friendly to operate. A switch seat 12 is arranged on the lower surface of the handle 1, and an air pipe joint 15 is fixedly connected to the back of the transition tube 8. Through the action of the air pipe joint 15, clean air can be provided for the protective device installed on the field mirror 11. A cover plate 10 is arranged on the front of the reflective shell 9.

[0027] The left and right sides of the inner wall of the lens clamp 17 are clamped with clamping blocks 23, one end of the clamping block 23 is made of rubber, and the other end of the clamping block 23 is fixedly connected to a return spring 21, one end of the return spring 21 is fixedly connected to the inner wall of the lens clamp 17, and the clamping block 23 can automatically clamp and limit the lens clamp 17 through the action of the return spring 21, so that the reflective lens 18 is easy to be installed on the lens clamp 17, and then it is convenient to install or remove the reflective lens 18, and it is convenient to replace it as needed. The front side of the clamping block 23 is threadedly connected with a fastening screw 22, and one end of the back side of the fastening screw 22 is overlapped with the front side of the inner wall of the lens clamp 17. Through the action of the fastening screw 22, when the clamping block 23 clamps the reflective lens 18, it can be further limited and fixed, so that its structure is stable, prevented from loosening, and convenient for continuous use.

[0028] A rubber embedding ring 6 is fixedly connected to the left side of the inner wall of the handle 1, one end of the optical isolator 5 is clamped in the rubber embedding ring 6, the upper surface of the inner wall of the handle 1 and the lower surface of the inner wall are fixedly connected to the limiting mechanism 2, and a bellows seat 13 is provided at the right end of the handle 1, and one end of the bellows seat 13 is clamped in the handle 1. Through the action of the bellows seat 13, all cables 4 are conveniently protected and conveniently connected to the cleaning machine.

[0029] A number of cables 4 are arranged in the handle 1, and the right ends of the several cables 4 are fixedly connected with a connector 27, a connecting thread block 25 is arranged in the corrugated pipe seat 13, and the outer wall of the connector 27 is fixedly connected with a threaded arc plate 26, one end of the threaded arc plate 26 is clamped in the connecting thread block 25, and the outer wall of the connecting thread block 25 is threadedly connected with a limiting thread ring 24, and one end of the threaded arc plate 26 is threadedly connected to the limiting thread ring 24. The threaded arc plate 26 can be embedded in the connecting thread block 25, so that the connector 27 is easy to connect, and the limiting thread ring 24 can be used to stably limit the connector 27 to effectively prevent it from loosening, so that the cable 4 is easy to disassemble, and the disassembly and maintenance of the laser cleaning head are convenient.

[0030] The limiting mechanism 2 includes a movable frame 201, a rubber wrapping layer 202, an inner clamping block 203, a support spring 204 and an inner cavity 205. The left side of the bellows seat 13 is fixedly connected to two embedded groove plates 3, one end of the embedded groove plate 3 is clamped in a notch provided in the inner cavity 205, and a movable frame 201 is provided in the inner cavity 205. The outer wall of the movable frame 201 overlaps the inner wall of the inner cavity 205, and the top of the movable frame 201 passes through the handle 1. The upper surface of the inner wall of the movable frame 201 is fixedly connected to the inner clamping block 203, and one end of the inner clamping block 203 is an inclined trapezoidal The structure is configured to be clamped in the embedded groove plate 3. Since one end of the inner clamping block 203 is a trapezoidal structure, the embedded groove plate 3 can be automatically limited when it is embedded in the inner cavity 205. Two supporting springs 204 are fixedly connected to the lower surface of the movable frame 201. Through the action of the supporting springs 204, the inner clamping block 203 can be driven to move by pressing the movable frame 201, so that it is separated from the embedded groove plate 3 and is easy to release the limit. The bottom ends of the two supporting springs 204 are fixedly connected to the lower surface of the inner wall of the inner cavity 205.

[0031] The outer wall of the movable frame 201 is provided with a rubber sheath 202, the upper surface of the rubber sheath 202 is fixedly connected to the outer wall of the movable frame 201, and the lower surface of the rubber sheath 202 is fixedly connected to the upper surface of the handle 1. Through the action of the rubber sheath 202, the contact surface of the movable frame 201 can be wrapped and protected to play a role in dustproof and waterproof.

[0032] A paraxial red light element 19 and a coaxial vision CCD element 20 are provided in the field lens 11. Micro motors 28 are provided on the back of the paraxial red light element 19 and the back of the coaxial vision CCD element 20. A control module 29 is provided in the field lens 11. Through the action of the control module 29, the paraxial red light element 19 can adaptively adjust the paraxial red light angle according to the specifications of the field lens, and the coaxial vision CCD element 20 can adaptively identify dirty areas and automatically clean them.

[0033] The working principle of the present invention is as follows: when in use, the optical isolator 5 is first started through the switch seat 12. When the laser beam emitted from the optical isolator 5 reaches the reflective lens 18 set on the output shaft of the galvanometer motor 16, its optical path direction is reflected to form a right angle, and under the action of the deflection of the galvanometer motor 16 and the field lens 11, its optical path forms a cleaning light curtain, and then forms a row of dense light spots on the focusing surface of the field lens 11. In addition, during use, the galvanometer motor 16 is controlled by rotating the potentiometer 7 to adjust the deflection angle of the reflective lens 18 to change the cleaning angle. Wash width, secondly, when it is necessary to replace and maintain parts, press the movable frame 201 to make it shrink and descend and drive the inner clamping block 203 to descend, so that it is separated from the embedded groove plate 3 to release the limit on the corrugated pipe seat 13, and then, the limiting threaded ring 24 is rotated to the right to release the limit on the threaded arc plate 26, the cable 4 is separated, and the optical isolator 5 is pulled out for replacement, and the machine cover 14 can be opened, the galvanometer motor 16 is taken out for maintenance, and the reflective lens 18 can be removed and replaced through the lens clamp 17 as needed.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0036] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightweight laser cleaning head with right-angle light output, comprising a handle (1), characterized in that: The handle (1) is provided with an optical isolator (5), the left end of the handle (1) is provided with a transition tube (8), the left end of the transition tube (8) is fixedly connected to a reflective shell (9), the lower surface of the reflective shell (9) is fixedly connected to a field lens (11), the back of the reflective shell (9) is provided with a cover (14), a galvanometer motor (16) is provided in the cover (14), the output shaft of the galvanometer motor (16) is fixedly connected to a lens clamp (17), a reflective lens (18) is clamped in the lens clamp (17), and the reflective lens (18) is located on the left side of the optical isolator (5), the upper surface of the transition tube (8) is provided with a rotary potentiometer (7), the lower surface of the handle (1) is provided with a switch seat (12), the back of the transition tube (8) is fixedly connected to a trachea joint (15), and the front of the reflective shell (9) is provided with a cover plate (10); The left side surface of the inner wall of the handle (1) is fixedly connected to a rubber insert ring (6), one end of the optical isolator (5) is clamped in the rubber insert ring (6), the upper surface and the lower surface of the inner wall of the handle (1) are fixedly connected to a limiting mechanism (2), and the right end of the handle (1) is provided with a bellows seat (13), and one end of the bellows seat (13) is clamped in the handle (1); A plurality of cables (4) are arranged in the handle (1), and the right ends of the plurality of cables (4) are fixedly connected to a connector (27). A connecting thread block (25) is arranged in the bellows seat (13), and the outer wall of the connecting head (27) is fixedly connected to a threaded arc plate (26), one end of the threaded arc plate (26) is clamped in the connecting thread block (25), the outer wall of the connecting thread block (25) is threadedly connected to a limiting thread ring (24), and one end of the threaded arc plate (26) is threadedly connected to the limiting thread ring (24); The limiting mechanism (2) comprises a movable frame (201), a rubber coating (202), an inner clamping block (203), a support spring (204) and an inner cavity (205); the left side of the bellows seat (13) is fixedly connected to two embedded groove plates (3); one end of the embedded groove plate (3) is clamped in a notch provided in the inner cavity (205); a movable frame (201) is provided in the inner cavity (205); an outer wall of the movable frame (201) is in contact with the inner cavity ( The movable frame (201) is overlapped with the inner wall of the inner cavity (205), the top end of the movable frame (201) passes through the handle (1), the upper surface of the inner wall of the movable frame (201) is fixedly connected with an inner clamping block (203), one end of the inner clamping block (203) is an inclined trapezoidal structure and is clamped in the embedded groove plate (3), and the lower surface of the movable frame (201) is fixedly connected with two supporting springs (204), and the bottom ends of the two supporting springs (204) are fixedly connected to the lower surface of the inner wall of the inner cavity (205).

2. A lightweight laser cleaning head with right-angle light output according to claim 1, characterized in that: The left and right side surfaces of the inner wall of the lens clamp (17) are clamped with clamping blocks (23), one end of the clamping block (23) is made of rubber, the other end of the clamping block (23) is fixedly connected with a return spring (21), one end of the return spring (21) is fixedly connected with the inner wall of the lens clamp (17), the front side of the clamping block (23) is threadedly connected with a fastening screw (22), and one end of the back side of the fastening screw (22) overlaps with the front side of the inner wall of the lens clamp (17).

3. A light laser cleaning head with right-angle light output according to claim 1, characterized in that: The outer wall of the movable frame (201) is provided with a rubber coating (202), the upper surface of the rubber coating (202) is fixedly connected to the outer wall of the movable frame (201), and the lower surface of the rubber coating (202) is fixedly connected to the upper surface of the handle (1).

4. A light-weight laser cleaning head with right-angle light output according to claim 1, characterized in that: A paraxial red light element (19) and a coaxial visual CCD element (20) are arranged in the field lens (11); micro motors (28) are arranged on the back of the paraxial red light element (19) and the back of the coaxial visual CCD element (20); and a control module (29) is arranged in the field lens (11).

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