Guiding device for cleaning side face through laser at low temperature

Abstract

The invention provides a guiding device for laser low-temperature cleaning of side faces, and belongs to the technical field of laser cleaning, the guiding device comprises a drawer-shaped frame, one side, close to one end of a laser target piece, of the drawer-shaped frame is fixedly connected with a fixed shaft sleeve, and the other side, close to one end of the laser target piece, of the drawer-shaped frame is detachably connected with a flexible bearing through a fixing bolt; the outer side of the pore plate shaft is fixedly connected with a pore plate, the pore plate is located between the fixed shaft sleeve and the flexible bearing, the end, penetrating through the flexible bearing, of the pore plate shaft is in threaded connection with a flexible bearing nut, and a through hole is reserved in the middle of the pore plate; a laser focusing area is arranged on the upper surface of the laser target sheet and located on the other side of the inclined face. The problems that a traditional laser cleaning technology cannot shield laser energy, cracks are likely to be induced, the surface quality is reduced, and meanwhile the side face, especially the inner side face, is difficult to clean in the laser cleaning machining direction, namely the laser incidence direction are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cleaning, and in particular relates to a guiding device for laser low-temperature cleaning of a side surface. Background Art

[0002] Laser cleaning is an advanced cleaning technology that uses a high-energy laser beam to irradiate the surface of an object and quickly evaporate or peel off impurities, pollutants or coatings through optical and thermal effects.

[0003] The principle of traditional laser cleaning technology is to remove redundant surface materials through continuous laser ablation or pulsed laser impact, but there is a thermal effect, which can easily induce cracks and reduce surface quality. There is also a laser low-temperature cleaning method based on laser-induced cavitation technology, which uses the shock waves and microjets generated by the collapse of cavitation bubbles to remove redundant surface materials. However, this method still involves partial participation of the laser. In addition, the processing direction of traditional laser cleaning is the direction of laser incidence, which makes it difficult to clean the sides, especially the inner sides. Summary of the invention

[0004] The present invention provides a guiding device for low-temperature laser cleaning of the side, which aims to solve the problem that traditional laser cleaning technology cannot shield laser energy, easily induces cracks, and reduces surface quality. At the same time, the processing direction of laser cleaning, i.e., the laser incident direction, makes it difficult to clean the side, especially the inner side.

[0005] An embodiment of the present invention provides a guiding device for laser low-temperature cleaning of the side, comprising a drawer-shaped frame, wherein one side of the drawer-shaped frame close to one end of the laser target piece is fixedly connected to a fixed shaft sleeve, and the other side of the drawer-shaped frame close to one end of the laser target piece is detachably connected to a flexible bearing through a fixing bolt, a hole plate shaft is movably installed in the fixed shaft sleeve, and the two ends of the hole plate shaft pass through the fixed shaft sleeve and the flexible bearing respectively, and the outer side of the hole plate shaft is fixedly connected to a hole plate, and the hole plate is located between the fixed shaft sleeve and the flexible bearing, and one end of the hole plate shaft passes through the fixed shaft sleeve and is threadedly connected to a fixed shaft sleeve nut, and one end of the hole plate shaft passes through the flexible bearing and is threadedly connected to a flexible bearing nut, and a through hole is reserved in the middle of the hole plate, and a laser focusing area is provided on the upper surface of the laser target piece and on the other side of the inclined surface.

[0006] By adopting the above technical solution, the conduction of laser energy is blocked by the orifice plate, the laser thermal effect is reduced, and the cleaning processing direction can be deviated from the laser incident direction at a large angle, making laser cleaning more flexible. The inner side or other complex structure surfaces can also be cleaned, and the overall flexibility of the device is strong, and it can adapt to the side surfaces to be processed at different angles.

[0007] Furthermore, the laser target sheet is in a right-angled trapezoidal structure, the upper surface area of ​​the laser target sheet is large, and the lower surface area of ​​the laser target sheet is small.

[0008] By adopting the above technical solution, it is possible to avoid the generation of gaps between the orifice plate and the upper surface of the laser target sheet when the orifice plate rotates, which causes cavitation bubbles to drill into the gaps instead of drilling into the through holes.

[0009] Furthermore, a spring is fixedly connected to the inner wall of the drawer-shaped frame, a laser target piece is inserted into one side of the drawer-shaped frame, the other end of the spring is fixedly connected to the laser target piece, and the spring is in a compressed state so that one end of the inclined surface of the laser target piece is pressed tightly against the orifice plate.

[0010] By adopting the above technical solution, the laser target sheet is pressed against the orifice plate by the spring, and the orifice plate support feet on the orifice plate are pressed against the workpiece, so that the cleaning of the workpiece is convenient.

[0011] Furthermore, one side of the drawer-shaped frame is fixedly connected to a light rod sleeve, in which a light rod is slidably connected, and the other side of the drawer-shaped frame is fixedly connected to a lead screw sleeve, in which a lead screw is threadedly connected.

[0012] By adopting the above technical solution, the whole device can be controlled to move and stop in the vertical direction by rotating the lead screw, thereby changing the cleaning position.

[0013] Furthermore, the fixed shaft sleeve is fixedly connected to the drawer-shaped frame, and the flexible bearing is detachably connected to the drawer-shaped frame by bolts.

[0014] By adopting the above technical solution, the installation and adjustment of the orifice plate are facilitated.

[0015] Furthermore, a plurality of orifice plate legs are provided on a side wall of the orifice plate away from the laser target sheet, and the number of the orifice plate legs is greater than or equal to three.

[0016] By adopting the above technical solution, the orifice plate and the surface to be processed of the workpiece are separated by a certain distance through the orifice plate support feet, thereby ensuring that the surface to be processed of the workpiece can be cleaned.

[0017] Furthermore, the through hole is located above the laser target sheet.

[0018] By adopting the above technical solution, it is ensured that the cavitation bubbles can move through the through holes on the orifice plate to the surface of the workpiece to be processed.

[0019] The beneficial effects of the present invention are:

[0020] The present invention blocks the conduction of laser energy through the orifice plate, reduces the laser thermal effect, and can deviate the cleaning processing direction from the laser incident direction at a large angle, making laser cleaning more flexible. It can also clean the inner side or other complex structure surfaces, and the overall flexibility of the device is strong, and it can adapt to the side surfaces to be processed at different angles.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the orifice plate structure of an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a laser target sheet according to an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a flexible bearing installation structure according to an embodiment of the present invention;

[0027] Figure numerals: 1. screw sleeve; 2. screw; 3. spring; 4. laser target plate; 5. drawer-shaped frame; 6. optical rod sleeve; 7. optical rod; 11. orifice plate shaft; 12. fixed sleeve nut; 13. fixed sleeve; 14. orifice plate; 15. through hole; 16. laser focusing area; 17. flexible bearing; 18. flexible bearing nut; 19. fixing bolt; 20. orifice plate support foot. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described 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.

[0029] Reference Figure 1-Figure 4The embodiment of the present invention provides a guiding device for the side of laser low-temperature cleaning, including a drawer-shaped frame 5, a side of the drawer-shaped frame 5 close to one end of the laser target sheet 4 is fixedly connected with a fixed shaft sleeve 13, and the other side of the drawer-shaped frame 5 close to one end of the laser target sheet 4 is detachably connected with a flexible bearing 17 through a fixing bolt 19, a hole plate shaft 11 is movably installed in the fixed shaft sleeve 13, and the two ends of the hole plate shaft 11 pass through the fixed shaft sleeve 13 and the flexible bearing 17 respectively, and the outer side of the hole plate shaft 11 is fixedly connected with a hole plate 14, and the hole plate 14 is between the fixed shaft sleeve 13 and the flexible bearing 17, and the hole plate shaft 11 passes through the fixed shaft sleeve 13. One end is threadedly connected with a fixed shaft sleeve nut 12, one end of the orifice plate shaft 11 passing through the flexible bearing 17 is threadedly connected with a flexible bearing nut 18, a through hole 15 is reserved in the middle of the orifice plate 14, and a laser focusing area 16 is provided on the upper surface of the laser target sheet 4 and on the other side of the inclined surface. The orifice plate 14 hinders the conduction of laser energy and reduces the laser thermal effect. The cleaning processing direction can deviate from the laser incident direction at a large angle, making laser cleaning more flexible, and can also be used to clean the inner side or other complex structure surfaces. The overall flexibility of the device is strong and can adapt to the side surfaces to be processed at different angles.

[0030] Reference Figure 1 A spring 3 is fixedly connected to the inner wall of the drawer-shaped frame 5, a laser target piece 4 is inserted into one side of the drawer-shaped frame 5, and the other end of the spring 3 is fixedly connected to the laser target piece 4. The spring 3 is in a compressed state, so that one end of the inclined surface of the laser target piece 4 is pressed tightly against the orifice plate 14, and the laser target piece 4 is pressed tightly against the orifice plate 14 through the spring 3, so that the orifice plate support foot 20 on the orifice plate 14 presses against the workpiece, which is convenient for cleaning the workpiece.

[0031] Reference Figure 3 The laser target sheet 4 has a right-angled trapezoidal structure, the upper surface area of ​​the laser target sheet 4 is large, and the lower surface area of ​​the laser target sheet 4 is small, which can avoid the formation of a gap between the orifice plate 14 and the upper surface of the laser target sheet 4 when the orifice plate 14 rotates, causing cavitation bubbles to drill into the gap instead of drilling into the through hole 15.

[0032] Reference Figure 1 One side of the drawer-shaped frame 5 is fixedly connected to a light rod sleeve 6, in which a light rod 7 is slidably connected, and the other side of the drawer-shaped frame 5 is fixedly connected to a screw sleeve 1, in which a screw 2 is threadedly connected. By rotating the screw 2, the movement and stillness of the entire device in the vertical direction can be controlled, thereby changing the cleaning position.

[0033] Reference Figure 1 and Figure 4 The fixed shaft sleeve 13 is fixedly connected to the drawer-shaped frame 5, and the flexible bearing 17 is detachably connected to the drawer-shaped frame 5 by bolts, which is convenient for the installation and adjustment of the orifice plate 14.

[0034] Reference Figure 1 and Figure 2 A plurality of orifice plate feet 20 are provided on the side wall of the orifice plate 14 away from the laser target sheet 4, and the number of the orifice plate feet 20 is greater than or equal to three. The orifice plate feet 20 are used to separate the orifice plate 14 and the surface of the workpiece to be processed by a certain distance, thereby ensuring that the surface of the workpiece to be processed can be cleaned.

[0035] Reference Figure 1 The through hole 15 is located above the laser target sheet 4, ensuring that the cavitation bubble can pass through the through hole 15 on the orifice plate 14 and move to the surface of the workpiece to be processed.

[0036] The specific implementation method is as follows: when in use, the surface to be processed of the workpiece is attached to the orifice plate support leg 20. Under the action of the spring 3, the laser target plate 4 is pressed against the orifice plate 14, and the orifice plate 14 makes the orifice plate support leg 20 press against the workpiece. The laser beam is focused near the laser focusing area 16, thereby generating cavitation bubbles. The cavitation bubbles expand due to the internal high pressure and inertia. After expanding to the maximum size, they begin to shrink due to the internal low pressure and inertia. At the same time, they move toward the orifice plate 14 and drill into the through hole 15 under the influence of the wall-feeding effect, and then start the second expansion-contraction cycle. In the contraction stage of the second cycle, they move toward the surface to be processed of the workpiece on the other side under the influence of the wall-feeding effect and inertia, and produce a cleaning effect on the surface to be processed of the workpiece under the influence of the impact.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A guiding device for low-temperature laser cleaning of the side, characterized in that: The invention comprises a drawer-shaped frame (5), wherein one side of the drawer-shaped frame (5) close to one end of the laser target sheet (4) is fixedly connected to a fixed shaft sleeve (13), and the other side of the drawer-shaped frame (5) close to one end of the laser target sheet (4) is detachably connected to a flexible bearing (17) via a fixing bolt (19), and an orifice plate shaft (11) is movably installed in the fixed shaft sleeve (13), and the two ends of the orifice plate shaft (11) respectively pass through the fixed shaft sleeve (13) and the flexible bearing (17), and the outer side of the orifice plate shaft (11) is fixedly connected to a hole The orifice plate (14) is located between a fixed sleeve (13) and a flexible bearing (17); one end of the orifice plate shaft (11) passes through the fixed sleeve (13) and is threadedly connected to a fixed sleeve nut (12); one end of the orifice plate shaft (11) passes through the flexible bearing (17) and is threadedly connected to a flexible bearing nut (18); a through hole (15) is reserved in the middle of the orifice plate (14); and a laser focusing area (16) is provided on the upper surface of the laser target sheet (4) and on the other side of the inclined surface.

2. A guiding device for low-temperature laser cleaning of the side surface according to claim 1, characterized in that: The laser target sheet (4) is in a right-angled trapezoidal structure; the upper surface area of ​​the laser target sheet (4) is large, and the lower surface area of ​​the laser target sheet (4) is small.

3. The guiding device for low-temperature laser cleaning of the side surface according to claim 1, characterized in that: A spring (3) is fixedly connected to the inner wall of the drawer-shaped frame (5); a laser target sheet (4) is inserted into one side of the drawer-shaped frame (5); the other end of the spring (3) is fixedly connected to the laser target sheet (4); the spring (3) is in a compressed state, so that one end of the inclined surface of the laser target sheet (4) is pressed tightly against the orifice plate (14).

4. The guiding device for low-temperature laser cleaning of the side surface according to claim 1, characterized in that: One side of the drawer-shaped frame (5) is fixedly connected to a light rod sleeve (6), and a light rod (7) is slidably connected in the light rod sleeve (6); the other side of the drawer-shaped frame (5) is fixedly connected to a lead screw sleeve (1), and a lead screw (2) is threadedly connected in the lead screw sleeve (1).

5. The guiding device for low-temperature laser cleaning of the side surface according to claim 1, characterized in that: The fixed shaft sleeve (13) is fixedly connected to the drawer-shaped frame (5), and the flexible bearing (17) is detachably connected to the drawer-shaped frame (5) by bolts.

6. The guiding device for low-temperature laser cleaning of the side surface according to claim 1, characterized in that: A plurality of orifice plate legs (20) are arranged on the side wall of the orifice plate (14) away from the laser target sheet (4), and the number of the orifice plate legs (20) is greater than or equal to three.

7. The guiding device for low-temperature laser cleaning of the side surface according to claim 1, characterized in that: The through hole (15) is located above the laser target sheet (4).

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