Laser cleaning device and method for rolling wheel of roller press

Abstract

The invention relates to the technical field of laser cleaning devices, and discloses a roller press roller laser cleaning device which comprises a roller body and two side plates, an electric sliding table is fixedly mounted between the two side plates, the output end of the electric sliding table is fixedly connected with a mounting plate, and a laser cleaning mechanism is mounted on the outer surface of the top of the mounting plate. The laser cleaning mechanism comprises a QCS laser output head, a light beam shaping module, a focus lens and a sliding table, the QCS laser output head, the light beam shaping module and the focus lens are located on the same straight line, and a light transmitting seam allowing laser to penetrate through is formed in the outer surface of the laser protective cover. The QCS laser output head emits a laser processing beam which is shaped and focused by a homogenized beam, the output laser processing beam reaches the surface of a roller through the light-transmitting slit to heat carbon powder to gasify the carbon powder so as to realize cleaning, and the electric sliding table drives the laser cleaning mechanism to move, so that the surface cleaning efficiency of a roller body is improved, and the high-speed operation failure rate of a galvanometer is solved.

Description

Technical Field

[0001] The invention relates to the technical field of laser cleaning devices, in particular to a laser cleaning device and a method for cleaning a roller of a roller press. Background Art

[0002] Pole sheet rolling is an essential process in the production process of new energy lithium-ion batteries. The rolling process can effectively improve the bonding strength between the semi-solid electrical slurry particles and the metal foil while ensuring that the surface of the pole sheet remains smooth and flat, so as to prevent peeling during electrolyte immersion and battery use. During the rolling process, a roller press is required. In the actual production process, a part of the carbon powder slurry will adhere to the roller surface, affecting the subsequent roller quality. Therefore, it is necessary to remove the carbon powder on the roller surface in a timely and effective manner. At present, the main cleaning method is to manually wipe the roller for cleaning after shutdown, and the roller surface needs to be moistened with water, which has low cleaning efficiency and affects the equipment output; secondly, the use of non-woven fabrics for automatic wiping will generate more than 1.5 million yuan in consumables costs for each machine each year.

[0003] The existing patent (Announcement No.: CN118122712A) discloses a laser cleaning device for cleaning the cold rolling roller of the pole piece of new energy battery. The laser protective cover is installed above the roller, and a light-transmitting slit is opened on the laser protective cover. The laser protective cover is provided with a dust collecting port, and the dust collecting port is connected to the dust collecting device; the laser cleaning mechanism is installed on the motion module, and the motion module is supported on the right support frame and the left support frame; the laser cleaning mechanism includes a QCS laser output head, a laser reflection module, a field mirror, a galvanometer and a slide. The QCS laser output head is connected to the galvanometer through the laser reflection module, and the galvanometer is connected to the field mirror. The light outlet of the field mirror faces the light-transmitting slit, and the output laser processing beam passes through the light-transmitting slit to reach the surface of the roller. The QCS laser output head, the laser reflection module and the galvanometer are installed on the mounting base, and the mounting base is carried on the slide, and the slide is placed on the motion module. The carbon powder is heated by pulse laser to gasify it for cleaning, which does not damage the surface of the roller, does not require shutdown, and is automatically cleaned during the rolling process.

[0004] In the above patented technology, pulse laser is used to heat carbon powder to gasify it for cleaning. There is no damage to the surface of the roller, no need to stop the machine, and automatic cleaning is performed during the rolling process. However, in actual use, when laser cleaning is used, the path generated is Z-shaped. In the actual cleaning process, it is found that there are local dead angles. The roller needs to be rotated multiple times before it can be cleaned, which prolongs the cleaning time and has low efficiency. In addition, there is a risk of damage to the galvanometer during high-speed operation. Therefore, a laser cleaning device and method for a roller press roller are proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a laser cleaning device and method for a roller press roller to solve the problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser cleaning device for a roller press, comprising a roller body and two side plates, an electric slide is fixedly installed between the two side plates, an output end of the electric slide is fixedly connected to a mounting plate, a laser cleaning mechanism is installed on the top outer surface of the mounting plate, the laser cleaning mechanism comprises a QCS laser output head, a beam shaping module and a focusing lens, the QCS laser output head is connected to the beam shaping lens, the beam shaping module is connected to the focusing lens, and the QCS laser output head, the beam shaping module and the focusing lens are located in the same straight line.

[0007] As a further explanation of the present invention, a laser protection cover is fixedly connected to the outer surface of the mounting plate, and a light-transmitting slit for allowing laser to pass through is formed on the outer surface of the laser protection cover.

[0008] As a further illustration of the present invention, a slide rail is installed between the two side panels, a slider is fixedly connected to the bottom outer surface of the laser protective cover, and the slider is movably connected to the inside of the slide rail.

[0009] As a further illustration of the present invention, the height of the light-transmitting slit is 5 to 10 mm.

[0010] As a further illustration of the present invention, the output laser of the QCS laser output head is flat-top light, with a wavelength of 1064nm, a power of 30-300w, a spot diameter of 5-7mm, a pulse width of 10-150ns, a frequency of 10-110KHz, and a beam quality M2 of 10-12.

[0011] As a further illustration of the present invention, the edge gap between the laser protection cover and the roller body is 2 to 5 mm.

[0012] A cleaning method of a roller press roller cleaning device is also provided, comprising the following steps:

[0013] S1: Control the distance between the roller body and the laser protection cover to 2-5 mm, issue a command through the industrial computer to make the electric slide work, the electric slide adjusts the position of the laser cleaning mechanism, and determines whether the laser cleaning mechanism moves to the specified position through the industrial computer. If there is a difference between the feedback position signal and the given position signal, an alarm is issued. If the position signals are consistent, the subsequent cleaning steps are carried out;

[0014] S2: Control the QCS laser output head to output laser light and then focus it through the beam shaping module. The focused spot size is a 0.2*4mm linear spot. The laser forms a cleaning area on the roller surface of the roller body. The residual carbon powder slurry on the roller surface is gasified and volatilized under the action of the laser.

[0015] S3: The laser cleaning mechanism is driven to move by an electric slide, and the roller body is rotated to perform all-round cleaning.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the laser cleaning device and method for the roller of a roller press provided by the present invention, the cleaning is achieved by shaping and focusing the light beam, heating the carbon powder and gasifying it, and the laser cleaning mechanism is driven to move by an electric slide, thereby improving the efficiency of cleaning the surface of the roller body and solving the problem of failure rate of high-speed operation of the galvanometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the top plan structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the side planar structure of the present invention.

[0021] In the figure: 1. roller body; 2. side panel; 3. electric slide; 4. mounting plate; 5. laser cleaning mechanism; 6. laser protection cover; 7. light-transmitting slit; 8. slide rail; 501. QCS laser output head; 502. focusing lens; 503. beam shaping module. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1:

[0024] Please refer to Figure 1-Figure 3The present invention provides a technical solution: a laser cleaning device for a roller of a roller press, comprising a roller body 1 and two side plates 2, an electric slide 3 is fixedly installed between the two side plates 2, an output end of the electric slide 3 is fixedly connected to a mounting plate 4, a laser cleaning mechanism 5 is installed on the top outer surface of the mounting plate 4, the laser cleaning mechanism 5 comprises a QCS laser output head 501, a beam shaping module 503, and a focusing lens 502, the QCS laser output head 501 is connected to the beam shaping lens, the beam shaping module 503 is connected to the focusing lens 502, the QCS laser output head 501, the beam shaping module 503 and the focusing lens 502 are located in the same straight line, specifically, a cleaning instruction is issued by an industrial computer, the electric slide 3 is operated by the industrial computer, and the electric slide 3 moves the laser cleaning mechanism 5 to the position to be cleaned The industrial computer determines whether the laser cleaning mechanism 5 moves to the specified position. If the feedback position signal is different from the given position signal, an alarm is sounded; if the position signals are consistent, the QCS laser output head is controlled to output the laser and focus after passing through the beam shaping mirror. The focused spot size is a 0.2*4mm linear spot. The laser forms a cleaning area on the roller surface of the roller body 1. The residual carbon powder slurry on the roller surface is vaporized and volatilized under the action of the laser. The laser forms a cleaning area of ​​about 4mm on the roller surface. Then the industrial computer controls the electric slide 3 to drive the laser cleaning mechanism 5 to move. Through the electric slide 3, the electric slide 3 with the beam shaping laser output head 503 moves. The industrial computer reads the roller speed. The industrial computer calculates the speed at which the slide needs to move, so that the roller rotates one circle and the slide moves just 4mm to form a cover. The control algorithm is used to adjust the speed of the slide to ensure the synchronization of the roller and the slide. The slide moves to cover the entire cleaning surface to complete one cleaning.

[0025] In this embodiment, a laser protection cover 6 is fixedly connected to the outer surface of the mounting plate 4. A light-transmitting slit 7 for allowing the laser to pass through is provided on the outer surface of the laser protection cover 6. Specifically, the laser beam passes through the light-transmitting slit 7 and is emitted toward the roller body 1. The laser is reflected by the laser protection cover 6. The laser is reflected and absorbed back and forth between the roller surface and the laser protection cover 6 until the energy is exhausted, thereby preventing the laser from escaping and causing harm to personnel.

[0026] In this embodiment, a slide rail 8 is installed between the two side panels 2, and a slider is fixedly connected to the bottom outer surface of the laser protection cover 6. The slider is movably connected to the inside of the slide rail 8. Specifically, when the electric slide 3 is working, it drives the laser protection cover 6 to move, so that the slider slides inside the slide rail 8, thereby allowing the laser protection cover 6 to move stably.

[0027] In this embodiment, the height of the light-transmitting slit 7 is 5-10 mm. Specifically, the above technical solution is adopted so that the laser beam can pass through the light-transmitting slit 7 more accurately.

[0028] In this embodiment, the output laser of the QCS laser output head 503 is flat-top light, with a wavelength of 1064nm, a power of 30-300w, a spot diameter of 6-8mm, a pulse width of 10-150ns, a frequency of 10-110KHz, and a beam quality M2 of 10-12. Specifically, according to the different rotation speeds of the roller body 1, the sliding table movement speed is controlled by an algorithm, and by controlling the power, pulse width, frequency and other parameters of the output laser, it is ensured that the laser has a gasification effect on the carbon powder slurry remaining on the surface of the roller, without damaging the surface of the roller body 1, thereby protecting the roller surface extremely well.

[0029] In this embodiment, the edge gap between the laser protection cover 6 and the roller body 1 is 2-5 mm.

[0030] A cleaning method of a roller press roller cleaning device is also provided, comprising the following steps:

[0031] S1: Control the distance between the roller body 1 and the laser protective cover 6 to be 2-5 mm, issue a command through the industrial computer to make the electric slide 3 work, the electric slide 3 adjusts the position of the laser cleaning mechanism 5, and determines whether the laser cleaning mechanism 5 moves to the specified position through the industrial computer. If there is a difference between the feedback position signal and the given position signal, an alarm is issued. If the position signals are consistent, the subsequent cleaning steps are performed;

[0032] S2: Control the QCS laser output head 501 to output laser light, which is focused after passing through the beam shaping module 503. The focused spot size is 0.2*4mm line spot. The laser forms a cleaning area on the roller surface of the roller body 1. The residual carbon powder slurry on the roller surface is gasified and volatilized under the action of the laser.

[0033] S3: The laser cleaning mechanism 5 is driven to move by the electric slide 3, and the roller body 1 rotates to perform all-round cleaning.

[0034] During the specific implementation process, a cleaning instruction is issued through the industrial computer, and the electric slide 3 is operated through the industrial computer. The electric slide 3 moves the laser cleaning mechanism 5 to the position to be cleaned, and the industrial computer determines whether the laser cleaning mechanism 5 has moved to the specified position. If there is a difference between the feedback position signal and the given position signal, an alarm is issued; if the position signals are consistent, the QCS laser output head 501 is controlled to output the laser and focus it after passing through the beam shaping module 503. The focused spot size is a 0.2*4mm line spot. The laser forms a cleaning area on the roller surface of the roller body 1. The residual carbon powder slurry on the roller surface is vaporized and volatilized under the action of the laser. The laser forms a cleaning area of ​​about 4mm on the roller surface. Then the industrial computer controls the electric slide 3 to drive the laser cleaning mechanism 5 to move. Through the operation of the electric slide 3, the electric slide 3 drives the beam shaping QCS laser output head 501 to move. As the electric slide 3 moves back and forth, the moving cleaning path of the beam shaping QCS laser output head 501 is linear, and the slide movement length covers the entire cleaning area to complete one cleaning.

[0035] The industrial computer is of existing structure, and the control circuit can be realized by simple programming by technicians in this field. It belongs to common knowledge in this field. It is only used without modification, so the control method and circuit connection are not described in detail.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cleaning device for a roller of a roller press, comprising a roller body (1) and two side plates (2), characterized in that: An electric slide (3) is fixedly installed between the two side plates (2); an output end of the electric slide (3) is fixedly connected to a mounting plate (4); a laser cleaning mechanism (5) is installed on the top outer surface of the mounting plate (4); the laser cleaning mechanism (5) comprises a QCS laser output head (501), a beam shaping module (503), and a focusing lens (502); the QCS laser output head (501) and the beam shaping lens are connected; the beam shaping module (503) and the focusing lens (502) are connected; and the QCS laser output head (501), the beam shaping module (503), and the focusing lens (502) are located in the same straight line.

2. The laser cleaning device for roller press wheels according to claim 1, characterized in that: A laser protection cover (6) is fixedly connected to the outer surface of the mounting plate (4), and a light-transmitting slit (7) for allowing laser light to pass through is provided on the outer surface of the laser protection cover (6).

3. The laser cleaning device for roller press wheels according to claim 1, characterized in that: A slide rail (8) is installed between the two side panels (2), and a slider is fixedly connected to the bottom outer surface of the laser protection cover (6), and the slider is movably connected to the inside of the slide rail (8).

4. The laser cleaning device for roller press wheels according to claim 2, characterized in that: The height of the light-transmitting slit (7) is 5 to 10 mm.

5. The laser cleaning device for roller press wheels according to claim 1, characterized in that: The output laser of the QCS laser output head (501) is flat-top light, with a wavelength of 1064nm, a power of 30-300w, a spot diameter of 5-7mm, a pulse width of 10-150ns, a frequency of 10-110KHz, and a beam quality M2 of 10-12.

6. The laser cleaning device for roller press wheels according to claim 2, characterized in that: The edge gap between the laser protection cover (6) and the roller body (1) is 2 to 5 mm.

7. The cleaning method of the roller of a roller press machine according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Control the distance between the roller body (1) and the laser protection cover (6) to be 2 to 5 mm, issue a command through the industrial computer to make the electric slide (3) work, the electric slide (3) adjusts the position of the laser cleaning mechanism (5), and determines through the industrial computer whether the laser cleaning mechanism (5) has moved to the specified position. If there is a difference between the feedback position signal and the given position signal, an alarm is issued. If the position signals are consistent, the subsequent cleaning steps are performed; S2: Control the QCS laser output head (501) to output laser light, which is focused after passing through the beam shaping module (503). The focused spot size is a 0.2*4mm line spot. The laser forms a cleaning area on the roller surface of the roller body (1). The residual carbon powder slurry on the roller surface is gasified and volatilized under the action of the laser. S3: The laser cleaning mechanism (5) is driven by the electric slide (3) to coordinate with the rotation of the roller body (1) to perform all-round cleaning.

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