Automatic cleaning device for protective lens of selective laser melting equipment

Abstract

The utility model provides an automatic cleaning device for a protective lens of selective laser melting equipment. The automatic cleaning device is characterized by comprising a cleaning mechanism, a mechanical arm and a control system. The cleaning mechanism comprises a spray-washing mechanism and a wiping mechanism and is located at the tail end of the mechanical arm. Under the control of the control system, the device drives the mechanical arm to reach a specified cleaning position, then the spraying and washing mechanism sprays high-pressure cleaning liquid to spray and wash the protective lens, the wiping mechanism conducts contact type cleaning on the protective lens, and the processes are repeated till the lens is cleaned up. According to the device, dust, smoke particles or cold liquefied water vapor on the surface of the lens can be removed, shielding or dispersion of laser is avoided, the phenomenon that the sintering quality is reduced due to reduction of laser power is reduced, and the problems that time consumption is long and the cleaning effect is difficult to guarantee due to the fact that current lens cleaning work is basically completed manually can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of additive manufacturing, and specifically relates to an automatic cleaning device for a protective lens of laser selective melting equipment. Background Art

[0002] Selective laser melting (SLM) is a process that uses a high-energy laser beam to cool and solidify powder. The high-energy laser beam completely melts the powder, rapidly cooling and solidifying it. SLM uses this process to create a three-dimensional object layer by layer.

[0003] Selective laser melting (SLM) equipment produces metal splatter and soot during operation. These particles can float within the build chamber and adhere to various components within it, including the lens surface. Because the laser must pass through the lens to melt the powder, these factors can affect the laser beam's focus, leading to surface defects and reduced product quality.

[0004] Existing cleaning of dust protection lenses is essentially done manually. This traditional manual cleaning method requires significant operator time, is difficult to guarantee, and suffers from low efficiency and uneven cleaning quality, severely impacting part manufacturing time and quality. The advent of automated cleaning systems has significantly reduced maintenance time and improved production efficiency. Furthermore, traditional manual cleaning methods can also cause burns to operators due to exposure to high-temperature dust. Utility Model Content

[0005] The utility model aims to address the shortcomings of existing problems and provides an automatic cleaning device for the protective lens of laser selective melting equipment. The device can automatically clean dust, smoke particles, or water vapor liquefied by cooling, etc. that already exist on the lens surface.

[0006] The specific technical solutions of the utility model are as follows:

[0007] 1. The cleaning mechanism of claim 1 , wherein the cleaning mechanism comprises a spraying mechanism and a wiping mechanism, which are located at the end of the robotic arm and perform spraying and wiping actions under the control of the control system; the wiping mechanism comprises a dust-free paper recovery shaft, a dust-free paper supply shaft, bearing ①, bearing ②, a recovery shaft end bearing seat, a supply shaft end bearing seat, a dust-free paper retaining ring, a roller, a bearing bracket, and a base, wherein the dust-free paper recovery shaft is located at the front end of the roller and is connected to the motor, and the dust-free paper supply shaft is located at the rear end of the roller, the above-mentioned shaft is connected to the bearing bracket by matching with bearing ②, and dust-free paper retaining rings are installed on the shafts to fix the dust-free paper, the roller and the bearing ① are matched to be connected to the bearing bracket, and the bearing bracket and the bearing bracket are both installed on the base; the spraying mechanism comprises a nozzle, a nozzle, a spray Pipe bracket, hydraulic pump, detergent tank, wherein the nozzle is connected to the nozzle, the nozzle is fixed to the nozzle bracket, and the nozzle bracket is connected to the bearing bracket; the upper end of the robotic arm is connected to the base of the wiping mechanism, and the lower end is installed at the bottom of the molding bin, both of which are detachable mechanisms; the control system controls the entire cleaning process, and when the robotic arm is driven to drive the cleaning mechanism to reach the designated cleaning position under the control of the control system, the control system controls the hydraulic pump to start, and the cleaning liquid is sprayed from the nozzle to the lens to be cleaned under the action of the hydraulic pump. At the same time, the control system controls the motor of the wiping mechanism to start, driving the dust-free paper to wipe the lens and realize recycling. After the current lens to be cleaned is cleaned, the control system controls the hydraulic pump and motor to stop running; then, the control system controls the robotic arm to drive the cleaning mechanism to the next designated cleaning position, and repeats the above actions until all lenses are cleaned.

[0008] Preferably, in the wiping mechanism, bearing ① and the bearing bracket adopt an interference fit to prevent the bearing from falling, and bearing ② and the bearing seat adopt an interference fit and are fixed by double bearings.

[0009] Furthermore, both the dust-free paper recovery shaft and the dust-free paper supply shaft are equipped with dust-free paper retaining rings, which can firmly fix the dust-free paper to the shaft. One end of the dust-free paper is wound around the dust-free paper supply shaft, and the other end passes through the roller and is wound around the dust-free paper recovery shaft.

[0010] Preferably, a fixed angle (40 degrees - 60 degrees) penetrating special-shaped hole is designed on the nozzle bracket in the spray cleaning mechanism to connect the nozzle and the nozzle bracket to ensure the dust removal effect. A hole is opened at the end of the nozzle for connection to the detergent tank, and two symmetrical holes are opened above the nozzle for installing the nozzle.

[0011] Furthermore, the detergent tank and the hydraulic pump in the spray cleaning mechanism are located at the bottom of the molding bin, close to the robotic arm.

[0012] Preferably, the control system not only controls the movement of the robot arm, but also controls the spraying of the spraying mechanism and the wiping of the wiping mechanism by controlling the hydraulic pump and the motor respectively.

[0013] The beneficial effects of the utility model are:

[0014] This device can not only remove dust, smoke particles or water vapor liquefied by cooling on the surface of the lens, avoid blocking or dispersion of the laser, and reduce the phenomenon of reduced sintering quality due to decreased laser power; it can also solve the problem that the current lens cleaning work is basically completed entirely by manual labor, resulting in a long time consumption and difficult to ensure cleaning results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is an overall model diagram of Example 1 of the utility model in the usage scenario.

[0017] Figure 2 This is a front view of Example 1 of the utility model.

[0018] Figure 3 This is a side view of embodiment 1 of the present utility model.

[0019] Figure 4 This is a top view of Example 1 of the utility model.

[0020] 1-forming chamber, 2-lens, 3-robotic arm, 4-cleaning mechanism, 5-detergent tank, 6-hydraulic pump, 7-spraying mechanism, 8-nozzle, 9-nozzle, 10-nozzle bracket, 11-wiping mechanism, 12-roller, 13-bearing ①, 14-bearing bracket, 15-motor, 16-dust-free paper recovery shaft, 17-dust-free paper retaining ring, 18-dust-free paper supply shaft, 19-bearing ②, 20-recovery shaft end bearing seat, 21-supply shaft end bearing seat, 22-base. DETAILED DESCRIPTION

[0021] Example 1, reference Figures 1 to 3 .

[0022] See also Figures 1 to 3The utility model proposes an automatic cleaning device for the protective lens of a laser selective melting device, comprising a cleaning mechanism 4, a robotic arm 3 and a control system. The cleaning mechanism 4 includes a spraying mechanism 7 and a wiping mechanism 11, which are located at the end of the robot arm 3 and perform spraying and wiping actions under the control of the control system; the wiping mechanism 11 includes a dust-free paper recovery shaft 16, a dust-free paper supply shaft 18, bearing ①13, bearing ②19, a recovery shaft end bearing seat 20, a supply shaft end bearing seat 21, a dust-free paper retaining ring 17, a roller 12, a bearing bracket 14, and a base 22, wherein the bearing seat and the bearing bracket 14 are both mounted on the base 22, and the other end of the base 22 is connected to the robot arm 3; the bearing seat is divided into a recovery shaft end bearing seat 20 and a supply shaft end bearing seat 21, both of which are fixed with double bearings and are respectively connected to the dust-free paper recovery shaft 16 and the dust-free paper supply shaft 18 through bearing ②19, and dust-free paper retaining rings 17 are installed on both shafts, and the dust-free paper retaining rings 17 can firmly fix the dust-free paper to the shaft; the dust-free paper recovery shaft 16 is positioned at At the front end of the roller 12 and connected to the recovery shaft end bearing seat 20, the motor 15 is installed on the recovery shaft end bearing seat 20; the dust-free paper supply shaft 18 is located at the rear end of the roller 12 and connected to the supply shaft end bearing seat 21; the bearing bracket 14 is located in the middle position of the two bearing seats, and the roller 12 and the bearing ①13 are matched and connected to the bearing bracket 14; the spraying mechanism 7 includes a nozzle 8, a nozzle 9, a nozzle bracket 10, a hydraulic pump 6, and a detergent tank 5, wherein the bearing bracket 14 is connected to the nozzle bracket 10, the nozzle 9 is installed on the nozzle bracket 10, the end of the nozzle 9 has a hole for connecting to the detergent tank 5, and two symmetrical holes are opened on the tube body for the installation of the nozzle 8; the detergent tank 5 and the hydraulic pump 6 are both located at the bottom of the molding bin 1; the robotic arm 3 is installed at the center position of the bottom of the molding bin 1, and the other end of the robotic arm 3 is connected to the base 22 of the wiping mechanism 11.

[0023] The control system controls the entire cleaning process. When the robotic arm 3 drives the cleaning mechanism 4 to the designated cleaning position under the control of the control system, the control system controls the hydraulic pump 6 to start, and the cleaning liquid is sprayed from the nozzle 8 to the lens 2 to be cleaned under the action of the hydraulic pump. At the same time, the control system controls the motor 15 of the wiping mechanism 11 to start, drive the dust-free paper to wipe the lens 2 and recycle it. The used dust-free paper will be wound up on the dust-free paper recycling shaft 16. After the current lens 2 to be cleaned is cleaned, the control system controls the hydraulic pump 6 and the motor 15 to stop running.

[0024] Then, the control system controls the robot arm 3 to drive the cleaning mechanism 4 to the next designated cleaning position, and repeats the above actions until all lenses 2 are cleaned.

[0025] Matters not covered in this utility model are known technologies.

[0026] The above description of the present invention and its embodiments is non-limiting. The accompanying drawings illustrate only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, devises a similar structure and embodiment without inventiveness, such design shall fall within the scope of protection of the present invention.

Claims

1. An automatic cleaning device for protective lenses of laser selective melting equipment, characterized by: The cleaning device comprises a cleaning mechanism, a mechanical arm and a control system. The cleaning mechanism comprises a spraying mechanism and a wiping mechanism, which are located at the end of the mechanical arm and perform spraying and wiping actions under the control of the control system.

2. The automatic cleaning device for protective lenses of laser selective melting equipment according to claim 1, characterized in that: The wiping mechanism includes a dust-free paper recovery shaft, a dust-free paper supply shaft, bearing ①, bearing ②, a recovery shaft end bearing seat, a supply shaft end bearing seat, a dust-free paper retaining ring, a roller and a bearing bracket, and a base, wherein the dust-free paper recovery shaft is located at the front end of the roller and is connected to the motor, and the dust-free paper supply shaft is located at the rear end of the roller. The above-mentioned shaft is connected to the bearing seat by cooperating with bearing ②, and a dust-free paper retaining ring is installed on the shaft to fix the dust-free paper; the roller and bearing ① are connected to the bearing bracket, and the bearing seat and the bearing bracket are both installed on the base.

3. The automatic cleaning device for protective lenses of laser selective melting equipment according to claim 1, characterized in that: The spray cleaning mechanism includes a spray head, a spray pipe, a spray pipe bracket, a hydraulic pump, and a detergent tank, wherein the spray head is connected to the spray pipe, the spray pipe is fixed to the spray pipe bracket, and the spray pipe bracket is connected to the bearing bracket.

4. The automatic cleaning device for protective lenses of laser selective melting equipment according to claim 1, characterized in that: The upper end of the mechanical arm is connected to the base of the wiping mechanism, and both are detachable mechanisms.

5. The automatic cleaning device for protective lenses of laser selective melting equipment according to claim 1, characterized in that: The control system controls the entire cleaning process.

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