Auxiliary distance fixing tool for handheld laser cleaning

Abstract

The utility model relates to the field of handheld laser cleaning equipment, in particular to an auxiliary distance fixing tool for handheld laser cleaning, which comprises a sliding bead base, a distance fixing sleeve arranged on the sliding bead base and a fixing support arranged on the distance fixing sleeve, and a mounting through hole is arranged on the fixing support. The handheld laser cleaning device is favorable for solving the problem that the light spot focusing condition is difficult to control when handheld laser cleaning is carried out in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of handheld laser cleaning equipment, in particular to an auxiliary distance-fixing tool for handheld laser cleaning. Background Art

[0002] Laser technology developed in the 1960s, and the concept of laser cleaning was first proposed in 1969. After decades of development, foreign laser cleaning technology has basically matured. The scope of laser cleaning is very wide, from thick rust layers to surface fine particles. It has nearly 30 years of experience in use. There are many types of equipment used in laser cleaning experiments in decontamination, and the wavelength range of the laser used is wide. There are six main mechanisms of laser cleaning, including light pressure mechanism, selective vaporization mechanism, vibration wave mechanism, vaporization pressure mechanism, plasma explosion mechanism and ablation mechanism. In the process of laser cleaning, the cleaning mechanism needs to be determined according to the actual situation, which may be the joint action of two or more effects. At this stage, the type of laser light source used in laser cleaning technology is mainly pulsed laser. Compared with traditional continuous lasers, pulsed lasers have relatively high single pulse energy and peak power. Therefore, the ablation effect of local strong vaporization can be achieved without causing heat conduction damage to the substrate. With the development of laser technology in my country, the cost of lasers has been greatly reduced and the reliability has been steadily improved. Combined with the advantages of laser cleaning technology, such as being green, environmentally friendly, free of secondary pollution and low cost, it has been widely used in my country's aerospace, rail transit, nuclear power, ships and other fields.

[0003] At present, most handheld laser cleaning equipment uses an open cleaning gun head, without a gantry structure or a mechanical arm suspension. It is mostly suitable for rough cleaning of paint, oil, carbon deposits and other pollutants on metal surfaces, and the control of the cleaning threshold is not precise. Because the threshold of the change in mechanical properties of the metal surface under the action of laser is much higher than the vaporization threshold of the surface material, the method of controlling the cleaning threshold is to determine the cleaning threshold of the stain and the damage threshold of the substrate material, and to control the working distance and other test conditions so that the laser energy density irradiated on the material surface per unit area is between the two, so that the cleaning process does not damage the substrate material. However, in the handheld cleaning method, the focusing of the light spot is difficult to control, and the laser energy density irradiated on the material surface per unit area is difficult to control between the two thresholds, resulting in substrate damage or below the material vaporization threshold, which fails to achieve the cleaning purpose. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary distance fixture for laser cleaning to solve the problem that the spot focusing is difficult to control during handheld laser cleaning. In the existing cleaning method, the working distance and cleaning angle are difficult to control, resulting in overburning of some areas and non-vaporization of some areas, uneven cleaning effects, and difficulty in quantitatively controlling the thinning amount of a single cleaning, and difficulty in realizing step-by-step peeling of the coating.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides an auxiliary distance tooling for handheld laser cleaning, including a sliding ball base, a distance sleeve arranged on the sliding ball base, and a fixed bracket arranged on the distance sleeve, wherein the fixed bracket is provided with an installation through hole.

[0006] Preferably, there is an angle between the upper surface and the lower surface of the sliding ball base.

[0007] Preferably, the ball sliding base includes a ball sliding base bottom plate and a stainless steel ball pulley assembly arranged at the bottom of the ball sliding base bottom plate.

[0008] Preferably, the bottom plate of the sliding ball base is a wedge-shaped plate, with the upper and lower surfaces forming an angle of 8°.

[0009] Preferably, the distance sleeve comprises a distance sleeve lower panel arranged on the sliding ball base and a plurality of distance cylinders arranged on the distance sleeve lower panel, and the fixing bracket is arranged on the top of the distance cylinder.

[0010] Preferably, a countersunk hole corresponding to the distance cylinder is provided on the upper surface of the lower panel of the distance sleeve.

[0011] Preferably, a through hole is provided at the center of the countersunk hole.

[0012] Preferably, a threaded hole is provided at the center of the lower cross section of the distance cylinder.

[0013] Preferably, the fixing bracket is formed by two concave aluminum plates being fitted and fixed together.

[0014] Preferably, the fixing bracket has an outwardly extending strip protrusion at the joint of the two concave aluminum plates, the rear concave plate protrusion is made into a through hole, the front concave plate protrusion is made into a threaded through hole, and the two concave plates are fixed with hexagon socket bolts.

[0015] In summary, the utility model includes the following beneficial technical effects:

[0016] ① The ball slide base surface is not installed vertically to the entire fixed distance fixture, but at a certain angle, so that the laser beam does not have to be shot vertically to the material surface, avoiding the beam reflecting back to the cleaning gun head and damaging the lens.

[0017] ② The fixed distance sleeve is easy to disassemble and assemble. According to the different focal lengths of the field lens of the cleaning gun head, cylinders of different lengths can be selected for installation to adapt to different cleaning gun heads.

[0018] ③The fixed bracket has an elliptical through hole to facilitate the nested installation of the cleaning gun head, making it convenient to hold the handle and perform cleaning operations.

[0019] ④ With the assistance of the tooling, the cleaning gun head can perform cleaning operations within a stable working distance, and the focus of the light spot remains basically consistent, so that the cleaning effect is also stably controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a top view of the utility model;

[0022] Figure 3 It is a side view of the utility model;

[0023] Figure 4 It is a front view of the utility model.

[0024] Figure numerals: 1. ball sliding base; 2. distance sleeve; 3. fixed bracket; 4. mounting through hole; 5. stainless steel ball pulley assembly; 6. bottom plate of ball sliding base; 7. lower panel of distance sleeve; 8. distance cylinder. DETAILED DESCRIPTION

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

[0026] The utility model provides Figure 1 An auxiliary distance fixture for laser cleaning shown in the figure includes a sliding ball base 1, a distance sleeve 2, and a fixed bracket 3. The sliding ball base 1 is connected to the distance sleeve 2 above, and the distance sleeve 2 is connected to the fixed bracket 3 above. The fixed bracket 3 has a mounting through hole 4 for the cleaning gun head.

[0027] The ball slide base 1, the ball slide installation surface is not parallel to the upper connection surface, but is milled at a certain angle (preferably 8°). The ball slide base 1 is equipped with four stainless steel ball pulley sets 5, one set at each of the four corners of the bottom of the ball slide base 1, fixed with hexagon socket bolts, so as to facilitate stable pushing on the material surface. The bottom plate 6 of the ball slide base is a wedge-shaped plate, and the upper and lower surfaces are at a certain angle. The upper surface of the bottom plate 6 of the ball slide base fits with the lower panel 7 of the fixed distance sleeve and is fixed with hexagon socket bolts.

[0028] The upper surface of the lower panel 7 of the distance sleeve is made of four countersunk holes, and the center of the countersunk holes is made of through holes. Four distance cylinders 8 are embedded in the countersunk holes. The center of the lower cross section of the cylinder is made of threaded holes and fixed with hexagon socket bolts. The distance sleeve 2 is composed of two upper and lower connecting panels and four circular columns. The columns are embedded in the countersunk holes of the two panels and connected with hexagon socket screws for stable installation.

[0029] The fixing bracket 3 is formed by two concave aluminum plates being fixed together, and an elliptical through hole is cut out on one side of the aluminum plate so that the main handle of the cleaning gun head can be nested and installed. The upper surfaces of the four spacing cylinders 8 are connected to the fixing bracket 3, and the lower surface of the fixing bracket 3 is made into four countersunk holes, and the center of the countersunk holes is made into a through hole. The four cylinders are nested into the countersunk holes, and the center of the cross section of the cylinder is made into a threaded hole, which is fixed with a hexagon socket bolt.

[0030] The fixing bracket 3 is divided into two front and rear concave plates, the rear concave plate is used as a cleaning gun head installation through hole 4, the two concave plates are fitted together, and each fitting part has an outwardly extending strip convexity, the convexity of the rear concave plate is made into a through hole, and the convexity of the front concave plate is made into a threaded through hole, and the two concave plates are fixed with hexagon socket bolts.

[0031] The working principle of the utility model is as follows:

[0032] Refer to the instruction manual Figure 1 When using the device, first select four distance cylinders 8 of appropriate length and fix them to the bottom plate 6 of the ball slide base. The rear concave plate is fixed to the corresponding two cylinders, the cleaning gun head is installed downward, the main handle of the cleaning gun head is embedded in the installation through hole 4, and then the front concave plate is attached to the rear concave plate, the cleaning gun head is clamped, the front and rear concave plates are fixed, and then the connection between the cylinder and the front concave plate is fixed.

[0033] Refer to the instruction manual Figure 1 When using this device, when cleaning the product in the laser cleaning equipment, hold the main handle of the cleaning gun head with your dominant hand, hold the tooling with the other hand, and keep the sliding ball base 1 close to the surface of the product. After turning on the laser, push it at a certain speed and reciprocate to achieve a quantitative thinning cleaning effect.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 handheld laser cleaning auxiliary distance fixture, characterized in that: It comprises a ball slide base (1), a distance sleeve (2) arranged on the ball slide base (1), and a fixing bracket (3) arranged on the fixing sleeve, wherein the fixing bracket (3) is provided with a mounting through hole (4); The distance sleeve (2) comprises a distance sleeve lower panel (7) arranged on the sliding ball base (1) and a plurality of distance cylinders (8) arranged on the distance sleeve lower panel (7), and the fixing bracket (3) is arranged on the top of the distance cylinder (8).

2. The handheld laser cleaning auxiliary distance fixture according to claim 1, characterized in that: An angle is formed between the upper surface and the lower surface of the sliding ball base (1).

3. The handheld laser cleaning auxiliary distance fixture according to claim 2, characterized in that: The ball slide base (1) comprises a ball slide base bottom plate (6) and a stainless steel ball pulley assembly (5) arranged at the bottom of the ball slide base bottom plate (6).

4. The handheld laser cleaning auxiliary distance fixture according to claim 3, characterized in that: The bottom plate (6) of the ball slide base is a wedge-shaped plate, and the upper and lower surfaces are 8 degrees.

5. The handheld laser cleaning auxiliary distance fixture according to claim 4, characterized in that: The upper surface of the lower panel (7) of the spacing sleeve is provided with a countersunk hole corresponding to the spacing cylinder (8).

6. The handheld laser cleaning auxiliary distance fixture according to claim 5, characterized in that: A through hole is provided at the center of the countersunk hole.

7. The handheld laser cleaning auxiliary distance fixture according to claim 6, characterized in that: A threaded hole is provided at the center of the lower cross section of the distance cylinder (8).

8. The handheld laser cleaning auxiliary distance fixture according to claim 1, characterized in that: The fixing bracket (3) is formed by two concave aluminum plates being fitted and fixed together.

9. The handheld laser cleaning auxiliary distance fixture according to claim 1, characterized in that: The fixing bracket (3) has two concave aluminum plates at the jointed position, each with an outwardly extending strip-shaped protrusion, a through hole is formed at the protrusion of the rear concave plate, and a threaded through hole is formed at the protrusion of the front concave plate, and the two concave plates are fixed with hexagon socket bolts.

Images