Sagger laser detection device

Abstract

The utility model relates to the technical field of laser surface treatment, in particular to a sagger laser detection device. A cleaning assembly is installed on the machine frame, a limiting jacking assembly is installed on the line body, the cleaning assembly comprises servo modules installed at the upper end of the machine frame, the servo modules are divided into an X servo module and a Y servo module, rotating air cylinders are installed at the lower ends of the servo modules, a rotating motor is installed on one side of a rotating mechanism, and a laser head assembly is installed below the rotating mechanism. The laser head assembly is covered with a dustproof cover shell. The limiting jacking assembly comprises a jacking mechanism installed at the lower end of the line body, a blocking mechanism is installed on one side of the jacking mechanism, and the extending end of the jacking mechanism and the extending end of the blocking mechanism are both arranged upwards and penetrate through the ceramic roller in the line body. A brush structure is omitted, the periphery and the bottom face of the inner wall of the sagger are cleaned through the laser head assembly, the jacking mechanism is controlled to work according to a scanned image, the distance between the bottom of the sagger and the laser head assembly is guaranteed, the sagger is cleaned thoroughly, the cleaning efficiency is high, and no dead angle exists at 360 degrees.

Description

Technical Field

[0001] The utility model relates to the technical field of laser surface treatment, in particular to a laser sagger detection device. Background Art

[0002] In the production process of battery powder materials (for example: lithium battery materials such as lithium hydroxide, lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, lithium iron phosphate, etc.), a high-temperature solid-phase synthesis method is used. It is to mix the required raw materials directly in solid form by stirring, ball milling, etc., and then roast them at high temperature. After cooling, they are crushed and sieved to obtain the required products. The battery powder materials need to be loaded in a sagger during the roasting process in a high-temperature kiln. The sagger is a graphite sagger. At high temperatures, the alkaline oxide Li2O may react chemically with the acidic oxide silicon dioxide and amphoteric oxide aluminum oxide in the surface layer of the sagger to produce a glassy substance, which causes the battery powder material to adhere to the surface of the sagger.

[0003] After the sagger is used, a small amount of battery powder material will adhere to its surface (i.e. the inner wall and bottom surface around the sagger), which requires cleaning. In the existing technology, the sagger is usually cleaned with a brush. The brush cleaning method has the following disadvantages:

[0004] First: The powder handling equipment is cleaned by a brush structure. The brush is a consumable part and needs to be replaced frequently, which can easily introduce impurities.

[0005] Second: During the cleaning process, the sagger cleaning cannot achieve the ideal effect, and the sagger is fragile, and there is a dead corner for cleaning, which is the boundary between two surfaces or more;

[0006] Third: There are defects of varying degrees of pits on the surface of the sagger, which cause material residues to remain on the surface of the sagger;

[0007] Fourth: When the brush is used for cleaning, dust overflows seriously; the installation structure of the brush is complicated, and there is a risk of metal foreign objects such as screws falling into the sagger. Utility Model Content

[0008] The technical problem to be solved by the utility model is: in order to solve the problems existing in the prior art in the above background technology, a laser detection device for sagger is provided.

[0009] The technical solution adopted by the utility model to solve the technical problem is: a laser detection sagger device, including a line body and a frame, the frame is mounted on the line body, the frame and the line body are vertically arranged, a cleaning component is installed on the frame, a limited position lifting component is installed on the line body, the

[0010] The cleaning assembly includes a servo module installed at the upper end of the frame. The servo module is divided into an X servo module and a Y servo module. A rotary cylinder is installed at the lower end of the servo module. A rotary motor is installed on one side of the rotary mechanism. A laser head assembly is installed below the rotary mechanism. A dust cover is provided on the upper cover of the laser head assembly.

[0011] The limited jacking assembly includes a jacking mechanism installed at the lower end of the line body, a blocking mechanism is installed on one side of the jacking mechanism, and the protruding ends of the jacking mechanism and the blocking mechanism are both arranged upward and pass through the ceramic roller in the line body.

[0012] Furthermore, it also includes a dust removal system, the dust cover and the dust removal system are connected through a pipeline, and negative pressure is formed between the dust removal system and the silo in the laser detection sagger device.

[0013] Furthermore, clamping mechanisms for clamping the sagger are installed on both the front and rear sides of the wire body.

[0014] Furthermore, the jacking mechanism includes a motor and a jacking plate, a ball screw mechanism is passed through the jacking plate, a guide column group is installed at the lower end of the jacking plate, a support plate is installed at one end of the ball screw mechanism, the support plate is located above the wire body, and symmetrical support seats are installed on the jacking plate. The ball screw mechanism is located between the two support seats, and the motor is connected to the nut in the ball screw mechanism through a transmission assembly to drive the ball screw mechanism to rotate.

[0015] Furthermore, the blocking mechanism includes a cylinder and a block, the cylinder is installed on the bottom surface of the lifting plate of the lifting mechanism, the lifting plate of the lifting mechanism is penetrated by a block column group, and the protruding end of the cylinder is connected to the block column group.

[0016] Furthermore, the laser head in the laser head assembly has a fixed focal length, and the spot diameter of the laser beam during the laser cleaning process is ≤1mm, and the pulse width is 0-500ns.

[0017] Furthermore, the modulation frequency of the laser head in the laser head assembly is 5K-4000K, and the modulation frequency of the laser head in the laser head assembly is gradually adjustable.

[0018] Furthermore, the specific parameters of the laser head in the laser head assembly are: central wavelength ≤ 1080nm, laser average power ≤ 500W, and laser linear speed ≤ 500mm / s.

[0019] Furthermore, the laser head assembly is a fiber laser device or a semiconductor laser device.

[0020] Beneficial effects of the present invention:

[0021] (1) The brush structure is eliminated, and there is no need to manually replace the brush, which can save costs;

[0022] (2) Laser cleaning is a non-contact cleaning method that uses a laser head assembly to clean the inner wall and bottom of the sagger. The sagger is cleaned cleanly with high cleaning efficiency and 360° without dead angles;

[0023] (3) During the cleaning process, the lifting mechanism is controlled according to the scanned image to ensure the distance from the bottom of the sagger to the laser head in the laser head assembly, further improving the cleanliness; at the same time, during the scanning, it is determined whether the sagger meets the scrap standard; moreover, laser cleaning can perform precise cleaning work, and the laser beam can be as small as about zero millimeters after focusing, and can be accurately positioned on the cleaning surface.

[0024] (4) The sagger is cleaned cleanly with high cleaning efficiency. During the cleaning process, the sagger is not affected by external forces and will not cause mechanical damage to the sagger. Moreover, the laser cleaning time is short, the heat-affected area of ​​the sagger is reduced, and thermal deformation will not be caused.

[0025] (5) Improve the dust removal method and install a dust suction seal at the end of the laser head assembly to clean up the dust and other impurities generated by the laser in time. The dust from the dust removal system can be injected into the silo in the form of negative pressure to prevent dust waste.

[0026] (6) At the same time, prevent metal foreign objects such as screws from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 It is a structural diagram of the utility model;

[0029] Figure 2 It is a three-dimensional diagram of the utility model;

[0030] Figure 3 It is a structural diagram of the cleaning component of the utility model;

[0031] Figure 4 This is a schematic structural diagram of the position limiting jacking assembly of the utility model;

[0032] Figure 5 This utility model Figure 4 Stereoscopic image of

[0033] In the figure: 1. Line body, 2. Frame, 3. Rotating cylinder, 4. Rotating mechanism, 5. Laser head assembly, 6. Rotating motor, 7. Dust cover, 8. Lifting mechanism, 9. Blocking mechanism, 10. Clamping mechanism, 11. X servo module, 12. Y servo module, 13. Dust removal system, 14. Motor, 15. Lifting plate, 16. Support seat, 17. Ball screw mechanism, 18. Guide column group, 19. Support plate, 20. Stopper, 21. Stopper column group, 22. Cylinder. DETAILED DESCRIPTION

[0034] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0035] Example 1:

[0036] like Figures 1 to 5 As shown, a laser detection sagger device includes a line body 1 and a frame 2, the frame 2 is mounted on the line body 1, the frame 2 is vertically arranged between the line body 1, a cleaning component is installed on the frame 2, and a limited position lifting component is installed on the line body 1.

[0037] The cleaning assembly includes a servo module installed at the upper end of the frame 2. The servo module is divided into an X servo module 11 and a Y servo module 12. A rotary cylinder 3 is installed at the lower end of the servo module. A rotary motor 6 is installed on one side of the rotating mechanism 4. A laser head assembly 5 is installed below the rotating mechanism 4. A dust cover 7 is provided on the upper cover of the laser head assembly 5. The laser head assembly 5 can have both scanning and cleaning functions, or it can be two devices (a laser cleaning device and a laser scanning device). The laser cleaning device is responsible for emitting a laser beam to clean the surface, while the laser scanning device is responsible for controlling the movement path and coverage range of the laser beam.

[0038] The limited lifting assembly includes a lifting mechanism 8 installed at the lower end of the wire body 1, and a blocking mechanism 9 is installed on one side of the lifting mechanism 8. The protruding ends of the lifting mechanism 8 and the blocking mechanism 9 are both set upward and pass through the ceramic roller in the wire body 1.

[0039] The device further comprises a dust removal system 13 , wherein the dust cover 7 is connected to the dust removal system via a pipeline, and a negative pressure is formed between the dust removal system and the silo in the laser detection sagger device.

[0040] A clamping mechanism 10 for clamping the sagger is installed on both the front and rear sides of the line body 1.

[0041] like Figure 5 As shown, the jacking mechanism 8 includes a motor 14 and a jacking plate 15, and a ball screw mechanism 17 is provided on the jacking plate 15. A guide column group 18 is installed at the lower end of the jacking plate 15, and a support plate 19 is installed at one end of the ball screw mechanism 17. The support plate 19 is located above the line body 1, and symmetrical support seats 16 are installed on the jacking plate 15. The ball screw mechanism 17 is located between the two support seats 16. The motor 14 is connected to the nut in the ball screw mechanism 17 through a transmission assembly to drive the ball screw mechanism 17 to rotate.

[0042] The blocking mechanism 9 includes a cylinder 22 and a block 20. The cylinder 22 is installed on the bottom surface of the lifting plate 15 of the lifting mechanism 8. The lifting plate 15 of the lifting mechanism 8 is penetrated by a block column group 21. The protruding end of the cylinder 22 is connected to the block column group 21.

[0043] Among them, the laser head assembly 5 is a fiber laser device or a semiconductor laser device; the laser head in the laser head assembly 5 has a fixed focal length, and the spot diameter of the laser beam during the laser cleaning process is ≤1mm, and the pulse width is 0-500ns.

[0044] The modulation frequency of the laser head in the laser head assembly 5 is 5K-4000K, and the modulation frequency of the laser head in the laser head assembly is gradually adjustable.

[0045] The specific parameters of the laser head in the laser head assembly 5 are: central wavelength ≤ 1080 nm, laser average power ≤ 500 W, and laser linear speed ≤ 500 mm / s.

[0046] Working process:

[0047] Step 1: The sagger moves forward along the direction of line 1;

[0048] Step 2: Under the action of the blocking mechanism 9, the movement of the line body 1 stops to prevent dry grinding between the bottom of the sagger and the ceramic roller;

[0049] Step 3: The clamping mechanism 10 moves to center the sagger;

[0050] Step 4: The lifting mechanism 8 is activated to lift the sagger to a set height, which is a distance from the bottom of the sagger to the laser head in the laser head assembly 5 of ≤700 mm. The laser head assembly 5 is a fiber laser device.

[0051] Step 5: Scan the four walls and bottom of the sagger, and wirelessly transmit the scan data to the host computer. The host computer can be a computer with image processing software. The image processing software analyzes the collected data, determines the three-dimensional inner surface of the sagger, determines the range of laser cleaning, and generates a control program for the motion trajectory of the X and Y servo modules. Use a path planning algorithm (such as A* algorithm, Dijkstra algorithm, RRT, etc.) to calculate the optimal path from the starting point to the end point;

[0052] Among them, when scanning the surface of the sagger, the scanning data is transmitted to the host computer, and the image processing software in the host computer analyzes the collected image and makes a defect judgment on the collected image to determine whether the sagger meets the scrapping standard; if it meets the scrapping standard, it enters the scrapping procedure;

[0053] If it does not meet the scrapping criteria, continue with the cleaning procedure;

[0054] Step 6: Clean the surface of the sagger according to the path planned in step 5. First clean the bottom surface of the sagger, then clean the four side walls of the sagger separately, and finally clean the boundary line of the sagger. Specifically:

[0055] First, clean the bottom surface of the sagger, move the laser head assembly 5 along the X-axis direction, and clean the X-axis direction first. The laser head has a fixed focal length, the focal length is ≤700mm, the spot diameter of the laser beam during the laser cleaning process is ≤1mm, the pulse width is 0-500ns, and the specific parameters of the laser head in the laser head assembly 5 are: central wavelength ≤1080nm, laser average power ≤500W, laser linear speed ≤500mm / s, the modulation frequency of the laser head in the laser head assembly 5 is 5K-4000K, the modulation frequency of the laser head in the laser head assembly is gradually adjustable, and the power adjustment range is 0-100%;

[0056] After the X-axis cleaning is completed, the Y servo module drives the laser head assembly 5 to move to another path. The Y-axis displacement is the pulse width of a laser beam. The action is the same as that of the X-axis to achieve cleaning of the inner surface of the sagger.

[0057] Then, the inner wall surface of the sagger is cleaned, the rotary cylinder 3 is actuated, and the laser head assembly 5 is rotated 90 degrees. The laser head assembly 5 always faces the cleaning surface and completes the cleaning of the inner wall surface of the sagger. The cleaning of the other three inner wall surfaces is consistent with the cleaning of the inner wall surface.

[0058] Then, the rotary cylinder 3 is activated to rotate the laser head assembly 5 to a certain angle, and the laser head assembly 5 is aligned with the boundary line of the sagger. After one boundary line is cleaned, the X servo module or the Y servo module drives the laser head assembly 5 to move along the X-axis or Y-axis direction to complete the cleaning of the remaining boundary lines.

[0059] At the same time, the dust removal system is always on to process the dust in the sagger.

[0060] In the above, when cleaning to the defect shown in the scanned image, the distance between the laser head assembly 5 and the cleaning surface changes, and the lifting mechanism 8 is started. The distance is corrected by the lifting mechanism 8 to always ensure the distance from the bottom of the sagger to the laser head in the laser head assembly 5, thereby improving the cleanliness of the laser cleaning.

[0061] Step 7: After the laser cleaning is completed, the lifting mechanism 8 is activated to lower the sagger onto the line body 1, the blocking structure 9 falls, and the sagger is transferred to the next station.

[0062] Example 2:

[0063] The difference from embodiment 1 is that the laser head assembly is a semiconductor laser device.

[0064] In summary, the brush structure is eliminated and there is no need to manually replace the brush, which can save costs; laser cleaning is a non-contact cleaning method, and a laser head assembly is used to clean the inner wall and bottom of the sagger. The sagger is cleaned cleanly with high cleaning efficiency and 360° without dead angles; laser cleaning can perform precise cleaning work, and the laser beam can be as small as about zero millimeters after focusing, and can be accurately positioned on the cleaning surface. The sagger is clean and has high cleaning efficiency. During the cleaning process, the sagger is not affected by external forces and will not cause mechanical damage to the sagger. In addition, the laser cleaning time is short, the heat-affected area of ​​the sagger is reduced, and thermal deformation will not be caused; Table 1 is a comparison table of laser processing process parameters in the embodiment and processing parameters in the comparative example (brush).

[0065] Table 1 Comparison of laser processing parameters in the embodiment and the processing parameters in the comparative example

[0066]

[0067] Example 3:

[0068] The difference from Example 1 is that: Step 6: Clean the surface of the sagger according to the path planned in Step 5, the path is first cleaning the U-shaped path, then cleaning the two inner walls of the sagger, and finally cleaning the sagger junction line; wherein the U-shaped cleaning path is: first cleaning the inner wall of one sagger, then cleaning the bottom surface of the sagger, and then cleaning the opposite inner wall of the sagger, specifically:

[0069] First, the rotary cylinder 3 is actuated to rotate the laser head assembly 5 by 90°. The laser head assembly 5 always faces the inner wall of the sagger and cleans the inner wall surface of the sagger.

[0070] Secondly, the rotary cylinder 3 is actuated to rotate the laser head assembly 5 90°, and the laser head assembly 5 cleans the bottom surface of the sagger. The laser head assembly 5 is moved along the X-axis direction to clean the X-axis direction first. The laser head has a fixed focal length, and the focal length is ≤700mm. During the laser cleaning process, the spot diameter of the laser beam is ≤1mm, and the pulse width is 0-500ns. The specific parameters of the laser head in the laser head assembly 5 are: central wavelength ≤1080nm, laser average power ≤500W, laser linear speed ≤500mm / s, and the modulation frequency of the laser head in the laser head assembly 5 is 5K-4000K. The modulation frequency of the laser head in the laser head assembly is gradually adjustable, and the power adjustment range is 0-100%;

[0071] Then, the rotary cylinder 3 is activated to rotate the laser head assembly 5 90°, and the laser head assembly 5 always faces the corresponding inner wall of the sagger 1 to complete the cleaning of the inner wall surface of the sagger 1;

[0072] Then, after the X-axis cleaning is completed, the Y servo module drives the laser head assembly 5 to move to another path, and the action is the same as the X-axis to achieve the cleaning of the inner surface of the sagger;

[0073] Finally, the other two inner wall surfaces of the sagger are cleaned respectively, and the rotary cylinder 3 is actuated to rotate the laser head assembly 5 90°. The laser head assembly 5 always works towards the cleaning surface to complete the cleaning of the inner surface of the sagger.

[0074] In summary, applying laser cleaning to clean a small amount of battery powder material adhering to the inner wall of the sagger has the following benefits:

[0075] 1. Non-contact cleaning: Laser cleaning is a non-contact cleaning method that can effectively remove powder materials adhering to the inner wall of the sagger without damaging the sagger surface or causing other forms of pollution.

[0076] 2. High precision and control: Laser cleaning can precisely control the energy and position of the cleaning process, so it can completely remove fine powder materials without affecting the structure and performance of the sagger.

[0077] 3. Efficient and energy-saving: Compared with traditional cleaning methods (such as chemical cleaning or mechanical scraping), laser cleaning can usually complete the task more efficiently and consumes relatively less energy.

[0078] 4. Environmental protection: The laser cleaning process does not produce chemical waste or use a large amount of water resources, which meets modern environmental protection requirements and helps reduce the impact on the environment.

[0079] In the field of battery manufacturing and assembly, these advantages are particularly important:

[0080] 1. Improved product quality: Cleaning the inner wall of the sagger can ensure the quality and performance stability of the battery components and reduce battery failure and energy loss caused by contaminants.

[0081] 2. Improved production efficiency: Laser cleaning technology can be integrated into automated production lines to improve production efficiency and consistency, and reduce manual cleaning costs and time costs.

[0082] 3. Compliance with industry standards: The battery industry has strict requirements on the cleanliness and precision of products. Laser cleaning can help manufacturers meet these standards and improve product competitiveness.

[0083] Therefore, the application of laser cleaning in battery manufacturing can significantly improve cleaning efficiency and product quality, while reducing production costs and environmental impact. It is one of the important technologies in modern manufacturing.

[0084] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A laser detection device for sagger, characterized by: The utility model comprises a line body (1) and a frame (2), wherein the frame (2) is mounted on the line body (1), and the frame (2) and the line body (1) are vertically arranged, a cleaning component is mounted on the frame (2), and a limited position lifting component is mounted on the line body (1). The cleaning assembly includes a servo module installed at the upper end of a frame (2), the servo module is divided into an X servo module (11) and a Y servo module (12), a rotary cylinder (3) is installed at the lower end of the servo module, a rotary motor (6) is installed on one side of a rotary mechanism (4), a laser head assembly (5) is installed below the rotary mechanism (4), and a dustproof cover (7) is provided on the upper cover of the laser head assembly (5); The position-limiting lifting assembly comprises a lifting mechanism (8) installed at the lower end of the line body (1), a blocking mechanism (9) is installed on one side of the lifting mechanism (8), and the protruding ends of the lifting mechanism (8) and the blocking mechanism (9) are both arranged upward and pass through the ceramic roller in the line body (1).

2. A laser detection sagger device according to claim 1, characterized in that: It also includes a dust removal system (13), the dust cover (7) and the dust removal system are connected via a pipeline, and negative pressure is formed between the dust removal system and the material bin in the laser detection sagger device.

3. A laser detection sagger device according to claim 1, characterized in that: The front and rear sides of the line body (1) are both equipped with clamping mechanisms (10) for clamping the sagger.

4. The laser detection device for sagger according to claim 1, characterized in that: The lifting mechanism (8) includes a motor (14) and a lifting plate (15), a ball screw mechanism (17) is provided on the lifting plate (15), a guide column group (18) is installed at the lower end of the lifting plate (15), a support plate (19) is installed at one end of the ball screw mechanism (17), and the support plate (19) is located above the line body (1), and symmetrical support seats (16) are installed on the lifting plate (15), and the ball screw mechanism (17) is located between the two support seats (16). The motor (14) is connected to a nut in the ball screw mechanism (17) through a transmission assembly to drive the ball screw mechanism (17) to rotate.

5. The laser detection device for sagger according to claim 1, characterized in that: The blocking mechanism (9) includes a cylinder (22) and a block (20), wherein the cylinder (22) is mounted on the bottom surface of a lifting plate (15) of the lifting mechanism (8), a block column group (21) is provided on the lifting plate (15) of the lifting mechanism (8), and the protruding end of the cylinder (22) is connected to the block column group (21).

6. The laser detection device for sagger according to claim 1, characterized in that: The laser head in the laser head assembly (5) has a fixed focal length, and the spot diameter of the laser beam during the laser cleaning process is ≤1mm, and the pulse width is 0-500ns.

7. The laser detection device for sagger according to claim 1, characterized in that: The modulation frequency of the laser head in the laser head assembly (5) is 5K-4000K, and the modulation frequency of the laser head in the laser head assembly is gradually adjustable.

8. The laser detection device for sagger according to claim 1, characterized in that: The specific parameters of the laser head in the laser head assembly (5) are: central wavelength ≤ 1080nm, laser average power ≤ 500W, and laser linear speed ≤ 500mm / s.

9. The laser detection device for sagger according to claim 1, characterized in that: The laser head assembly (5) is a fiber laser device or a semiconductor laser device.

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