Press roll scraper device

Abstract

The utility model discloses a compression roller scraper device, and relates to the technical field of battery preparation. The material scraping device comprises a fixing assembly, a first rotary motion output device, a scraper frame and a material scraping knife, the first rotary motion output device is fixed to the fixing assembly, the scraper frame is fixed to an output shaft of the first rotary motion output device, and the material scraping knife is fixed to the scraper frame and faces a pole piece pressing roller. When the first rotary motion output device outputs rotary motion, the scraper frame is driven to rotate so as to adjust the roller scraping angle of the cutting edge of the scraper relative to the pole piece pressing roller. Therefore, the angle of the scraping roller can be adjusted, the scraping effect of the scraping knife on the material on the compression roller is improved, and the product quality of the battery pole piece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery preparation, in particular to a pressure roller scraper device. Background Art

[0002] The manufacturing process of power batteries is generally divided into processes such as electrode manufacturing, battery cell synthesis and packaging. Among them, the coating process in electrode manufacturing is to coat the positive electrode active material and the negative electrode material on the aluminum foil and copper foil respectively, and combine the conductive agent and the binder to form the electrode sheet.

[0003] However, during the rolling process, the electrode sheets that have undergone the coating process will frequently stick to the roller, causing the roller to roll the battery electrode sheets for the second time after the sticking material, causing damage to the coating of the battery electrode sheets. Therefore, it is necessary to install a scraper on the roller to scrape off the material stuck on the roller. However, the scraping roller angle corresponding to the scraper in the prior art cannot be adjusted, which affects the scraping effect of the scraper on the material on the roller and reduces the product quality of the battery electrode sheets. Utility Model Content

[0004] In view of the above problems, the present utility model is proposed to provide a pressure roller scraper device that overcomes the above problems or at least partially solves the above problems.

[0005] The utility model provides a pressure roller scraper device, the device comprising:

[0006] Fixing components;

[0007] a first rotational motion output device, wherein the first rotational motion output device is fixed to the fixing assembly;

[0008] A scraper frame, wherein the scraper frame is fixed to the output shaft of the first rotary motion output device;

[0009] A scraper is fixed on the scraper frame and faces the pole piece pressure roller to scrape the material on the pole piece pressure roller, wherein when the first rotary motion output device outputs a rotary motion, the scraper frame is driven to rotate to adjust the scraping roller angle of the scraper blade relative to the pole piece pressure roller.

[0010] Optionally, the fixing component includes:

[0011] Base;

[0012] a second rotational motion output device, wherein the second rotational motion output device is fixed on the base;

[0013] A linear motion output unit, wherein the linear motion output unit is connected to the output shaft of the second rotary motion output device, wherein the first rotary motion output device is fixed to the linear motion output unit, so that when the second rotary motion output device outputs a rotary motion, the linear motion output unit drives the scraper to make a linear motion close to or away from the pole piece pressure roller.

[0014] Optionally, the linear motion output unit includes:

[0015] A slide rail, which is vertically arranged and fixed on the base;

[0016] A slider, the slider is slidably connected to the slide rail, and the first rotational motion output device is fixed to the slider;

[0017] A nut, the nut being fixed on the slider;

[0018] A screw rod is embedded in the nut and is coaxially fixed with the output shaft of the second rotary motion output device.

[0019] Optionally, the linear motion output unit includes:

[0020] a gear, the gear being fixed to the output shaft of the second rotational motion output device and being coaxially arranged with the output shaft of the second rotational motion output device;

[0021] A rack is vertically embedded in the base and slidably connected to the base, wherein the rack is meshed with the gear, and the first rotational motion output device is fixed on the rack.

[0022] Optionally, the device further includes a pressure sensor and a controller electrically connected to the pressure sensor, wherein the second rotational motion output device is electrically connected to the controller to control the rotation of the second rotational motion output device through the electrical signal detected by the pressure sensor.

[0023] Optionally, the sensing surface of the pressure sensor is flush with the blade of the scraper.

[0024] Optionally, the first rotational motion output device includes a first servo motor.

[0025] Optionally, the second rotational motion output device includes a second servo motor.

[0026] Optionally, when the number of the scraper blades is greater than one, at least two of the scraper blades are arranged at equal angles with respect to the center of the scraper holder.

[0027] Optionally, the cross-sectional shape of the scraper holder is circular.

[0028] Compared with the prior art, the utility model includes a fixed component, a first rotary motion output device, a scraper frame and a scraper knife, wherein the first rotary motion output device is fixed on the fixed component, the scraper frame is fixed to the output shaft of the first rotary motion output device, and the scraper knife is fixed on the scraper frame and faces the pole piece pressure roller to scrape the material on the pole piece pressure roller, wherein when the first rotary motion output device outputs a rotary motion, the scraper knife's blade is adjusted relative to the pole piece pressure roller's scraping roller angle, thereby realizing the adjustment of the scraper roller angle, improving the scraping effect of the scraper knife on the material on the pressure roller, and improving the product quality of the battery pole piece.

[0029] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0031] In the attached picture:

[0032] Figure 1 It is a structural schematic diagram of a pressure roller scraper device provided by an embodiment of the utility model;

[0033] Figure 2 It is a structural schematic diagram of a fixing assembly provided by an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the connection structure between a scraper frame and a scraper provided by an embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram of the electrical connection structure of a controller provided by an embodiment of the utility model;

[0036] Figure numerals: 1. Fixed component; 11. Base; 12. Second rotary motion output device; 13. Linear motion output unit; 131. Slide rail; 132. Slider; 133. Screw rod; 2. First rotary motion output device; 3. Scraper frame; 4. Scraper; 5. Pressure sensor; 6. Controller; 7. Pole piece pressure roller. DETAILED DESCRIPTION

[0037] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0038] Reference Figure 1-4 The present utility model provides a roller scraper device, which may include a fixing assembly 1, a first rotary motion output device 2, a scraper frame 3 and a scraper 4, wherein:

[0039] The first rotary motion output device 2 is fixed on the fixed component 1, the scraper frame 3 is fixed to the output shaft of the first rotary motion output device 2, and the scraper 4 is fixed on the scraper frame 3 and faces the pole piece pressure roller 7 to scrape the material on the pole piece pressure roller 7, wherein when the first rotary motion output device 2 outputs a rotary motion, the scraper frame 3 is driven to rotate to adjust the scraping roller angle of the blade of the scraper 4 relative to the pole piece pressure roller 7.

[0040] In the embodiment of the utility model, the first rotational motion output device 2 is used to output rotational motion, that is, when the first rotational motion output device 2 is working, the rotational motion is output through the output shaft of the first rotational motion output device 2. The first rotational motion output device 2 is fixed to the fixing assembly 1, and the scraper frame 3 is fixed to the output shaft of the first rotational motion output device 2, so that when the first rotational motion output device 2 outputs rotational motion, the scraper frame 3 fixed to the output shaft can be driven to rotate.

[0041] The scraper 4 is installed near the pole piece pressure roller 7 so as to be able to scrape off the material distributed on the roller surface of the pole piece pressure roller 7, thereby preventing the pole piece pressure roller 7 from rolling the battery pole piece for the second time after the material sticks, causing damage to the coating of the battery pole piece. The scraper 4 is fixed on the scraper frame 3. In some embodiments, the scraper 4 can be clamped in the mounting groove provided on the scraper frame 3; in other embodiments, the scraper 4 can be threadedly connected to the scraper frame 3. Those skilled in the art can determine the fixing method between the scraper 4 and the scraper frame 3 according to the actual assembly requirements, and no excessive restrictions are made here. The scraper 4 can be extended along the length direction of the pole piece pressure roller 7.

[0042] In some embodiments, the length direction of the scraper frame 3 is parallel to the length direction of the pole piece roller 7, and the blade of the scraper 4 is horizontally arranged, so that during the rotation of the pole piece roller 7, the scraper 4 can scrape the material on the roller surface in the axial direction of the pole piece roller 7 at the same time. This can ensure that the material on the roller surface of the pole piece roller 7 is basically scraped off after the pole piece roller 7 rotates one circle, avoiding damage to the coating of the battery pole piece. In addition, when the scraper frame 3 rotates, the scraper 4 can be driven to rotate synchronously, thereby adjusting the scraping angle of the blade of the scraper 4 relative to the pole piece roller 7. The scraping roller angle between the scraper 4 and the pole piece roller 7 can be adjusted by the first rotary motion output device 2 based on the sticking condition on the pole piece roller 7 and the wear condition of the scraper 4, or based on the assembly error of the scraper frame 3 and the assembly error of the pole piece roller 7, wherein the scraping roller angle refers to the angle between the blade of the scraper 4 and the roller surface of the pole piece roller 7 with which it contacts. Thus, the adjustment of the scraping roller angle can improve the scraping effect of the scraper 4 on the material on the roller, and improve the product quality of the battery pole piece.

[0043] In some preferred embodiments, reference Figure 3 As shown, the scraping roller angle a between the blade of the scraper 4 and the roller surface of the pole piece pressure roller 7 is within the angle range of 35°-40°, and the scraping effect of the scraper 4 is better. It can avoid material residue on the scraper 4 and affect the long-term scraping effect of the scraper 4.

[0044] An optional embodiment of the utility model, the fixed component 1 may include a base 11, a second rotational motion output device 12, and a linear motion output unit 13, the second rotational motion output device 12 is fixed on the base 11, and the linear motion output unit 13 is connected to the output shaft of the second rotational motion output device 12, wherein the first rotational motion output device 2 is fixed on the linear motion output unit 13, so that when the second rotational motion output device 12 outputs rotational motion, the linear motion output unit 13 drives the scraper 4 to make a linear motion close to or away from the pole piece pressure roller 7.

[0045] In the embodiment of the utility model, the base 11 is used to support the second rotary motion device, the linear motion output unit 13 and other components. It can be fixed on the roller device corresponding to the pole piece roller 7. Alternatively, the base 11 can be fixed on the mounting seat of the scraper device, wherein the scraper device and the roller device are independent of each other. The second rotary motion output device 12 is used to output rotary motion, and the second rotary motion output device 12 can be installed on the base 11 by means of threaded connection, welding or riveting. Among them, the output shaft of the second rotary motion output device 12 is connected to the linear motion output unit 13. For example, the second rotary motion output device 12 and the linear motion output unit 13 can be connected by transmission, and the output shaft of the rotary motion output device outputs rotary motion to the linear motion output unit 13, and the linear motion output unit 13 can convert rotary motion into linear motion and output it to the first rotary motion output device 2 fixed thereto.

[0046] Thus, when the second rotary motion output device 12 outputs rotary motion, the first rotary motion output device 2 can perform reciprocating linear motion under the action of the linear motion output unit 13. In other words, the scraper frame 3 can drive the scraper 4 to perform linear motion close to or away from the pole piece pressure roller 7 along with the reciprocating linear motion of the first rotary motion output device 2. Thus, when the scraper 4 is not needed to perform the scraping operation of the pole piece pressure roller 7, or when the scraper 4 needs to be removed for replacement, etc., the lifting and lowering of the scraper 4 can be adjusted by the second rotary motion output device 12.

[0047] Furthermore, through the second rotary motion output device 12 and the linear motion output unit 13, the height of the scraper 4 can be adjusted based on the wear of the scraper 4, or based on the assembly error of the scraper frame 3 and the assembly error of the pole piece pressure roller 7, on the basis of adjusting the scraper roller angle of the scraper 4. By combining the height adjustment of the scraper 4 and the scraper roller angle adjustment of the scraper 4, the scraping effect of the scraper 4 on the material on the pressure roller can be improved, and the product quality of the battery pole piece can be improved.

[0048] An optional utility model embodiment, referring to Figure 1 and Figure 2 As shown, the linear motion output unit 13 may include a slide rail 131, a slider 132, a nut and a screw rod 133, wherein the slide rail 131 is vertically arranged and fixed to the base 11. The slider 132 is slidably connected to the slide rail 131, and the first rotary motion output device 2 is fixed to the slider 132. The nut is fixed to the slider 132, and the screw rod 133 is embedded in the nut and coaxially fixed to the output shaft of the second rotary motion output device 12.

[0049] In the embodiment of the utility model, the nut and the screw rod 133 constitute a nut screw rod transmission structure, so that when the screw rod and the output shaft of the second rotary motion output device 12 are coaxially fixed, the screw rod 133 can be driven to rotate through the output shaft of the second rotary motion output device 12, so that the rotary motion of the screw rod 133 can be converted into the linear motion of the nut sleeved on the screw rod 133. Therefore, the nut can be driven to make reciprocating linear motion along the screw rod 133 through the positive and negative rotational motion of the second rotary motion output device 12. The end of the screw rod 133 away from the second rotary motion output device 12 is rotatably connected to the base 11. Among them, coaxial fixing means that the central axis of the output shaft of the second rotary motion output device 12 coincides with the central axis of the screw rod 133. The nut and the slider 132 can be fixed by welding, threaded connection, etc., so that when the nut makes linear motion along the screw rod 133, the slider 132 can be driven to make linear motion along the slide rail 131 at the same time, thereby driving the first rotary motion output device 2 to make reciprocating linear motion.

[0050] In the case where the screw rod 133 and the slide rail 131 are arranged vertically, when the second rotary motion output device 12 outputs the rotary motion, it can drive the scraper 4 to perform a lifting motion close to or away from the pole piece pressing roller 7 .

[0051] In another optional embodiment of the utility model, the linear motion output unit 13 may include a gear and a rack, the gear is fixed to the output shaft of the second rotary motion output device 12, and is coaxially arranged with the output shaft of the second rotary motion output device 12. The rack is vertically embedded in the base 11 and is slidably connected to the base 11, wherein the rack is meshed with the gear, and the first rotary motion output device 2 is fixed to the rack.

[0052] In the embodiment of the utility model, the linear motion output unit 13 may further include a gear and a rack, and the gear is coaxially fixed with the output shaft of the second rotary motion output device, that is, the central axis of the gear coincides with the central axis of the output shaft of the second rotary motion output device 12. The output shaft of the second rotary motion output device 12 may be arranged horizontally. In some embodiments, in order to improve the rotational stability of the second rotary motion output device 12, the output shaft of the second rotary motion output device 12 may also be rotatably connected to the base 11.

[0053] The rack is installed vertically and embedded in the base 11, so that the rack is limited by the base 11, and the rack is slidably connected to the base 11. Therefore, when the rack is meshed with the gear, the rack performs lifting motion when the second rotary motion output device 12 outputs the rotary motion, and drives the first rotary motion output device 2 installed on the rack to perform lifting motion, and drives the scraper 4 to perform lifting motion close to or away from the pole piece pressing roller 7.

[0054] An optional utility model embodiment, referring to Figure 1 , Figure 3 and Figure 4 As shown, the device also includes a pressure sensor 5 and a controller 6 electrically connected to the pressure sensor 5, wherein the second rotational motion output device 12 is electrically connected to the controller 6 to control the rotation of the second rotational motion output device 12 through the electrical signal detected by the pressure sensor 5.

[0055] In the embodiment of the utility model, the pressure sensor 5 may include but is not limited to a piezoelectric pressure sensor, a strain gauge pressure sensor, a piezoresistive pressure sensor, and other pressure sensors 5. The pressure sensor 5 may generate a corresponding voltage or current signal through the pressure contact of the pole piece roller 7 on the sensing surface, and then input it into the controller 6. When the controller 6 detects that the pressure sensor 5 detects an electrical signal, or the electrical signal changes, the second rotary motion output device 12 is controlled to stop rotating.

[0056] In one example, the controller 6 may further include a second circuit module, which may include a voltage comparator, a transistor, and a relay, wherein the two input ends of the voltage comparator are respectively coupled to the voltage signal output end of the pressure sensor 5 and the reference voltage. The reference voltage is smaller than the voltage value output when the pressure sensor 5 and the pole piece roller 7 are pressed, so that when the pressure sensor 5 and the pole piece roller 7 are pressed, the voltage comparator outputs a corresponding level (e.g., a low level) to drive the transistor to borrow. The armature of the relay coupled to the transistor is de-energized, and the switch contact in the power supply circuit coupled to the second rotary motion output device 12 is disconnected, thereby stopping the rotation of the second rotary motion output device 12.

[0057] In some other embodiments, the controller 6 is electrically connected to the first rotational motion output device 2 , so that the controller 6 can control whether the first rotational motion output device 2 is working.

[0058] In an optional embodiment of the utility model, the sensing surface of the pressure sensor 5 is flush with the blade of the scraper 4 .

[0059] In the embodiment of the utility model, being flush means that the sensing surface of the pressure sensor 5 and the blade of the scraper 4 are on the same horizontal line, so that the sensing surface of the pressure sensor 5 can be determined to be in contact with the roller surface of the pole piece pressure roller 7 according to the detection signal of the pressure sensor 5, for example, when there is a change in the pressure signal, and the blade of the scraper 4 is in contact with the roller surface of the pole piece pressure roller 7 at this time, so as to ensure the scraping effect of the scraper 4. Thereby, the position accuracy of the scraper 4 can be improved without manual calibration.

[0060] In an optional embodiment of the utility model, the first rotational motion output device 2 includes a first servo motor, and / or the second rotational motion output device 12 includes a second servo motor.

[0061] In the embodiment of the utility model, the servo motor can realize accurate closed-loop control of the position, and outputting the rotational motion through the servo motor is beneficial to improving the angle adjustment accuracy and height adjustment accuracy of the scraper 4.

[0062] In an optional embodiment of the utility model, when the number of the scraper blades 4 is greater than one, at least two of the scraper blades 4 are arranged at equal angles with respect to the center of the scraper frame 3 .

[0063] In the embodiment of the utility model, the number of scrapers 4 installed on the scraper frame 3 can also be multiple. For example, when the number of scrapers 4 is greater than one, at least two scrapers 4 are arranged at equal angles with respect to the central axis of the scraper frame 3. For example, when the number of scrapers 4 is two, the angle between each scraper 4 and the central axis of the scraper frame 3 is 180°. Therefore, when it is necessary to replace the scraper 4 of the pole piece pressure roller 7, the position of other scrapers 4 located on the same scraper frame 3 can be replaced by controlling the rotation of the first rotary motion output device 2, thereby improving the scraping efficiency of the pressure roller scraper device.

[0064] In an optional embodiment of the utility model, the cross-sectional shape of the scraper holder 3 is circular.

[0065] In the embodiment of the utility model, when the cross-sectional shape of the scraper frame 3 is circular, the scraper frame 3 is a cylindrical structure, which can reduce the longitudinal load of the output shaft of the first rotary motion output device 2, and because the center of gravity of the scraper frame 3 is located on the central axis of the scraper frame 3, the rotation stability of the scraper frame 3 can be improved. The product performance of the pressure roller scraper device is further optimized.

[0066] In summary, an embodiment of the utility model discloses a roller scraper device, which may include a fixed component 1, a first rotary motion output device 2, a scraper frame 3 and a scraper knife, wherein the first rotary motion output device 2 is fixed on the fixed component 1, the scraper frame 3 is fixed to the output shaft of the first rotary motion output device 2, and the scraper knife 4 is fixed on the scraper frame 3 and faces the pole piece roller 7 to scrape the material on the pole piece roller 7, wherein when the first rotary motion output device 2 outputs a rotary motion, the scraper roller angle of the blade of the scraper knife 4 is adjusted relative to the pole piece roller 7, thereby realizing the adjustment of the scraper roller angle, improving the scraping effect of the scraper knife 4 on the material on the roller, and improving the product quality of the battery pole piece.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] It is easy for a person skilled in the art to think that any combination of the above embodiments is feasible, so any combination of the above embodiments is an implementation scheme of the present utility model. However, due to space limitations, this specification will not describe them in detail here.

[0069] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0070] Similarly, it should be understood that in order to simplify the present invention and help understand one or more of the various aspects of the present invention, in the above description of exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof.

[0071] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

Claims

1. A pressure roller scraper device, characterized in that: The device comprises: Fixing component (1); A first rotational motion output device (2), wherein the first rotational motion output device (2) is fixed on the fixing component (1); A scraper frame (3), wherein the scraper frame (3) is fixed to the output shaft of the first rotary motion output device (2); a scraper (4), the scraper (4) being fixed on the scraper frame (3) and facing the pole piece pressure roller (7) to scrape the material on the pole piece pressure roller (7), wherein when the first rotary motion output device (2) outputs a rotary motion, the scraper frame (3) is driven to rotate to adjust the scraping roller angle of the blade of the scraper (4) relative to the pole piece pressure roller (7); Base (11); a second rotational motion output device (12), wherein the second rotational motion output device (12) is fixed on the base (11); A linear motion output unit (13), the linear motion output unit (13) being connected to the output shaft of the second rotary motion output device (12), wherein the first rotary motion output device (2) is fixed to the linear motion output unit (13), so that when the second rotary motion output device (12) outputs rotary motion, the linear motion output unit (13) drives the scraper (4) to perform linear motion close to or away from the pole piece pressing roller (7).

2. The pressure roller scraper device according to claim 1, characterized in that: The linear motion output unit (13) comprises: A slide rail (131), wherein the slide rail (131) is vertically arranged and fixed on the base (11); A slider (132), the slider (132) being slidably connected to the slide rail (131), and the first rotary motion output device (2) being fixed to the slider (132); a nut, the nut being fixed on the slider (132); A screw rod (133), wherein the screw rod (133) is embedded in the nut and is coaxially fixed with the output shaft of the second rotary motion output device (12).

3. The pressure roller scraper device according to claim 1, characterized in that: The linear motion output unit (13) comprises: a gear, the gear being fixed to the output shaft of the second rotational motion output device (12) and being coaxially arranged with the output shaft of the second rotational motion output device (12); A rack is vertically embedded in the base (11) and slidably connected to the base (11), wherein the rack is meshed with the gear, and the first rotary motion output device (2) is fixed on the rack.

4. The pressure roller scraper device according to claim 1, characterized in that: The device further comprises a pressure sensor (5) and a controller (6) electrically connected to the pressure sensor (5), wherein the second rotational motion output device (12) is electrically connected to the controller (6) so as to control the rotation of the second rotational motion output device (12) through the electrical signal detected by the pressure sensor (5).

5. The pressure roller scraper device according to claim 4, characterized in that: The sensing surface of the pressure sensor (5) is flush with the blade of the scraper (4).

6. The pressure roller scraper device according to claim 1, characterized in that: The first rotational motion output device (2) comprises a first servo motor.

7. The pressure roller scraper device according to claim 1, characterized in that: The second rotational motion output device (12) comprises a second servomotor.

8. The pressure roller scraper device according to claim 1, characterized in that: When the number of the scraper blades (4) is greater than one, at least two of the scraper blades (4) are arranged at equal angles with respect to the center of the scraper frame (3).

9. The pressure roller scraper device according to claim 1, characterized in that: The cross-sectional shape of the scraper frame (3) is circular.

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