Pressure-adjustable pole piece scraper

Abstract

The utility model relates to a pressure-adjustable pole piece scraper. The pressure-adjustable pole piece scraper comprises a connecting plate, the connecting plate is connected with a sliding rail and an adjusting assembly. A sliding block is connected to the sliding rail in a sliding manner; a scraper assembly is fixedly connected to the sliding block. The adjusting assembly comprises a micrometer head connected with the scraper assembly and a pressure adjusting piece abutting against the upper end face of the scraper assembly. The height of the scraper can be adjusted more accurately through the cooperation of the micrometer head and the pressure adjusting piece; the pressure of the scraper with the pole piece is adjustable and controllable, and the displacement deviation of the screw rod driven by the servo motor hardly affects the pressure change of the scraper; and proper pressure can be output by selecting the proper compression spring, so that proper adjustment can be performed according to the pole powder.

Description

Technical Field

[0001] The utility model relates to the field of lithium batteries, in particular to a pole piece scraper with adjustable pressure. Background Art

[0002] The pole scraper is a steel blade used to scrape the active material (pole powder) on the positive or negative current collector (foil) in the tab centering process to obtain a long strip of tab slots. Mechanical scraping is a method of spraying a specific solvent at the location to be scraped, and then scraping the pole powder with a pole scraper. The effect after scraping is as follows Figure 1 As shown, a blank scraping groove 1 is formed; the existing mechanical scraping structure is as follows Figure 2 As shown, a servo motor 2 is used to control the lifting of the screw rod 3 to adjust the stroke of the scraper 4.

[0003] like Figure 3 As shown, the pole piece 5 is composed of a blank foil 51 and upper pole powder 52 and lower pole powder 53 sprayed on the A and B surfaces of the blank foil 51. The thickness of the pole powder on one side is 60-80um, and the thickness of the blank foil 51 is 6-10um. The pole piece 5 is placed on the powder scraping table 6. There is a mechanical error in the process of the scraper 4 falling to the set height. When the error is a negative deviation, the scraper cannot completely reach the surface of the foil, and the pole powder cannot be completely scraped clean; when the error is a positive deviation, the foil will be punctured and damaged due to excessive pressure from the scraper. Therefore, the accuracy of the servo and the screw has a great influence on the powder scraping effect of the pole piece, and the higher the accuracy, the more expensive it is. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In order to solve the above problems in the prior art, the utility model provides a pole piece scraper with adjustable pressure.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] A pressure-adjustable pole piece scraper comprises a connecting plate; a slide rail and an adjustment component are connected to the connecting plate; a slider is slidably connected to the slide rail; a scraper component is fixedly connected to the slider; the adjustment component comprises a differential head connected to the scraper component and a pressure adjustment member abutting against the upper end face of the scraper component.

[0009] Furthermore, a slider baffle plate located at the bottom of the slide rail and used for limiting the slider is fixedly connected to the connecting plate.

[0010] Furthermore, the scraper assembly includes a scraper fixing plate and a scraper fixedly connected thereto; the scraper fixing plate includes a connecting vertical plate and a connecting horizontal plate; and the scraper is fixedly arranged on the connecting vertical plate.

[0011] Furthermore, the adjustment component includes a fixing plate located at the upper end of the slide rail and fixedly connected to the connecting plate; the fixing plate is connected to a pressure adjustment member and a differential head.

[0012] Furthermore, the fixing plate is provided with a connection hole threadedly connected to the pressure regulating member and a through hole fixedly connected to the differential head.

[0013] Furthermore, the pressure regulating member is provided with a fixing nut which cooperates with the fixing plate.

[0014] Furthermore, the movable rod at the lower end of the micrometer head passes through the fixed plate and is connected to the scraper assembly; a clearance hole is provided on the connecting cross plate; a stop block is provided in the clearance hole; the lower end surface of the stop block is provided with a limit ring that cooperates with the lower end surface of the clearance hole; the stop block is fixedly connected to the lower end of the movable rod.

[0015] Furthermore, the pressure regulating member includes a sleeve; a push rod is slidably provided inside the sleeve; a compression spring located inside the sleeve is sleeved on the push rod; a limit nut is provided at the upper end of the push rod extending out of the sleeve; and the lower end of the push rod extending out of the sleeve abuts against the upper end surface of the connecting cross plate.

[0016] Furthermore, the push rod includes a push rod head located at the lower end, a middle part of the push rod located in the middle, and a push rod end located at the upper end; the diameter of the middle part of the push rod is smaller than the diameter of the push rod head to form a push rod step; a through hole is formed at the upper end of the sleeve to allow the middle part of the push rod to pass through; below the through hole is an inner hole of the sleeve with a hole diameter larger than the hole diameter of the through hole; a sleeve top step is formed at the lower end of the through hole and the inner hole of the sleeve; the compression spring is sleeved on the middle part of the push rod; the top of the compression spring is limited by the top step of the sleeve, and the bottom is limited by the step of the push rod.

[0017] (III) Beneficial effects

[0018] The beneficial effects of the utility model are: through the cooperation of the differential head and the pressure regulating part, the scraper can be adjusted in height more accurately; the pressure of the scraper with the pole piece is ensured to be adjustable and controllable, and the displacement deviation of the lead screw driven by the servo motor will hardly affect the pressure change of the scraper; by selecting a suitable compression spring, the appropriate pressure can be output, so that appropriate adjustment can be made according to the pole powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the pole piece after the pole powder is scraped off;

[0021] Figure 2 It is a schematic diagram of the existing mechanical scraping structure;

[0022] Figure 3 This is a schematic diagram of scraping off the pole powder from the pole piece;

[0023] Figure 4 It is an exploded view of the structure of the utility model;

[0024] Figure 5 It is a cross-sectional view of the pressure regulating member of the utility model;

[0025] Figure 6 This is an exploded view of the pressure regulating member of the utility model;

[0026] Figure 7 It is a schematic diagram of the structure of the fixed plate of the utility model;

[0027] Figure 8 It is a cross-sectional view of the utility model;

[0028] Fig. 9 It is a reference diagram of the use state of the utility model;

[0029] Description of reference numerals:

[0030] 1. Scraping slot; 2. Servo motor; 3. Screw; 4. Scraper; 5. Pole piece; 51. Empty foil; 52. Upper pole powder; 53. Lower pole powder; 6. Powder scraping table;

[0031] 10. Connecting plate; 20. Slide rail; 30. Slider; 40. Fixed plate; 41. Connecting hole; 42. Through hole; 50. Slider baffle; 60. Scraper fixing plate; 61. Connecting vertical plate; 62. Connecting horizontal plate; 621. Clearance hole; 70. Differential head; 71. Movable rod; 72. Stop block; 721. Limit retaining ring; 80. Pressure regulating member; 81. Push rod; 811. Push rod head; 812. Push rod step; 813. Push rod middle; 814. Push rod end; 82. Bushing; 821. Bushing inner hole; 822. Bushing top step; 823. Through hole; 83. Limit nut; 84. Compression spring; 85. Fixing nut. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] For example, please refer to Figure 4 As shown:

[0036] A pressure-adjustable pole piece scraper includes a connecting plate 10; the connecting plate 10 is used to be connected to a connecting portion on a screw rod 3, so that under the action of a driving motor, the pole piece 5 scraper 4 of the utility model is driven to work;

[0037] The connecting plate 10 is fixedly connected with a slide rail 20; the slide rail 20 is slidably connected with a slider 30; the slider 30 is fixedly connected with a scraper assembly; so that the scraper assembly can move up and down along the slide rail 20; the connecting plate 10 is also connected with an adjustment assembly; the adjustment assembly includes a differential head 70 connected to the scraper assembly and a pressure adjustment member 80 abutting against the upper end surface of the scraper assembly; the scraper assembly is accurately moved up and down by the adjustment assembly, so as to accurately adjust the position of the scraper 4, so as to ensure that the scraper 4 can scrape off the pole powder cleanly without damaging the foil;

[0038] In one embodiment, a slider baffle 50 is fixedly connected to the connecting plate 10; the slider baffle 50 is located below the slide rail 20 and is used to limit the position of the slider 30 to prevent the slider 30 from leaving the slide rail 20;

[0039] In one embodiment, the scraper assembly includes a scraper fixing plate 60 and a scraper 4 fixedly connected thereto; the scraper fixing plate 60 includes a connecting vertical plate 61 and a connecting horizontal plate 62 that are connected to each other; the scraper 4 is fixedly arranged on the connecting vertical plate 61; the connecting horizontal plate 62 is mainly used to cooperate with the adjustment assembly; in one embodiment, the scraper assembly may also not be guided by the slider 30, so that the scraper assembly can be moved up and down, but this type of structure does not sufficiently restrict the degree of freedom of the scraper assembly and cannot guarantee the accuracy of the scraper assembly when it moves up and down, that is, the scraper assembly may still shake when it moves up and down, which is not conducive to accurately adjusting the position of the scraper assembly; therefore, the connection method of the slider 30 and the slide rail 20 is used to guide the movement of the scraper assembly, so that the position of the scraper assembly can be adjusted more accurately and stably.

[0040] In one embodiment of the utility model, the adjustment assembly includes a fixing plate 40 fixedly connected to the connecting plate 10; the fixing plate 40 is arranged at the upper end of the slide rail 20; the fixing plate 40 is connected with a pressure adjustment member 80 and a differential head 70; the pressure adjustment member 80 is used to abut against the upper surface of the connecting horizontal plate 62, and the differential head 70 is used to adjust the upper and lower positions of the scraper assembly;

[0041] In one embodiment, the pressure regulating member 80 may be a rod member threadedly connected to the fixed plate 40. By rotating the rod member to abut against one end of the connecting horizontal plate 62, the differential head 70 is fixedly connected to the fixed plate 40, and the movable rod 71 of the differential head 70 is connected to the connecting horizontal plate 62. By adjusting the extended length of the movable rod 71, the position of the scraper 4 assembly is adjusted.

[0042] In one embodiment, if Figure 7 As shown, the fixing plate 40 is provided with a connecting hole 41 threadedly connected to the pressure regulating member 80 and a through hole 42 fixedly connected to the differential head 70;

[0043] In one embodiment; the pressure regulating member 80 is provided with a fixing nut 85 that cooperates with the fixing plate 40;

[0044] In one embodiment, the movable rod 71 at the lower end of the micrometer head 70 passes through the fixed plate 40 and is connected to the scraper 4 assembly; the connecting cross plate 62 is provided with a clearance hole 621; a stop block 72 is provided in the clearance hole 621; the lower end surface of the stop block 72 is provided with a limit retaining ring 721 that is limitedly matched with the lower end surface of the clearance hole 621; the stop block 72 is fixedly connected to the lower end of the movable rod 71; the micrometer head 70 mainly applies an upward pulling force to the connecting cross plate 62, and the pressure regulating member 80 applies a downward elastic force to the connecting cross plate 62 or limits the connecting cross plate 62, thereby ensuring that the connecting cross plate 62 remains relatively stable in one position;

[0045] like Figure 5 As shown, in one embodiment, the pressure regulating member 80 includes a sleeve 82, in which a push rod 81 is slidably provided; a compression spring 84 located inside the sleeve 82 is sleeved on the push rod 81; a limit nut 83 is provided on the upper end of the push rod 81 extending out of the sleeve 82, and the lower end of the push rod 81 extending out of the sleeve 82 abuts against the upper end surface of the connecting cross plate 62; the compression spring 84 applies a downward elastic force to the push rod 81, and the limit nut 83 is limited at the top; the compression spring 84 is always in a compressed state when working, so as to ensure that the push rod 81 can continuously receive the downward elastic force, and when the scraper 4 is pressed down to work, the push rod 81 will be pushed up, partially compressing the compression spring 84, and since the elastic coefficient of the compression spring 84 is fixed, after the position of the scraper 4 is adjusted, the downward pressure will also be consistent;

[0046] like Figure 6 As shown, the push rod 81 includes a push rod head 811 located at the lower end, a push rod middle part 813 located in the middle, and a push rod end 814 located at the upper end; the diameter of the push rod middle part 813 is smaller than the diameter of the push rod head 811, thereby forming a push rod step 812; the upper end of the sleeve 82 is formed with a through hole 823 allowing the push rod middle part 813 to pass through; below the through hole 823 is a sleeve inner hole 821 with a hole diameter larger than the hole diameter of the through hole 823; the lower end of the through hole 823 and the sleeve inner hole 821 form a sleeve top step 822; the compression spring 84 is sleeved on the push rod middle part 813; the top of the compression spring 84 is limited by the sleeve top step 822, and the bottom is limited by the push rod step 812;

[0047] In one embodiment, the diameter of the top rod end 814 is smaller than the diameter of the top rod middle portion 813; in one embodiment, the diameter of the top rod end 814 is equal to the diameter of the top rod middle portion 813;

[0048] Working principle: Since the pressure regulating member 80 abuts against the upper end surface of the connecting cross plate 62, and the compression spring 84 can always apply a downward elastic force to the push rod 81, and the differential head 70 pulls the connecting cross plate 62 through the stop block 72, thereby ensuring that the connecting cross plate 62 is relatively stable; the elastic coefficient of the compression spring 84 is fixed, so the downward pressure of the scraper 4 on the pole piece 5 is also kept constant; Figure 8 As shown, when it is necessary to adjust the scraper 4 to move upward accurately, it is only necessary to rotate the differential head 70 and move the movable rod 71 upward, and the stop block 72 will drive the connecting cross plate 62 to move upward, and the connecting cross plate 62 will further compress the compression spring 84, and the limit nut 83 will break away from the top of the sleeve 82 and move upward; when it is necessary to adjust the scraper 4 to move downward accurately, the differential head 70 is rotated to move the movable rod 71 downward, and the compression spring 84 releases the elastic force to push the connecting cross plate 62 downward, thereby realizing the accurate up and down movement of the scraper 4 assembly; as shown in FIG. Fig. 9 As shown, when the servo motor 2 drives the scraper 4 assembly to scrape the pole powder through the screw 3, it can judge whether the falling height of the scraper 4 assembly is a positive deviation or a negative deviation according to the actual quality of the scraping groove 1, so as to rotate the differential head 70 to finely adjust the scraper 4 assembly up and down to offset the mechanical error and ensure the scraping powder quality.

[0049] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A pressure-adjustable pole scraper, characterized in that: The invention comprises a connecting plate (10); a slide rail (20) and an adjusting assembly are connected to the connecting plate (10); a slider (30) is slidably connected to the slide rail (20); a scraper assembly is fixedly connected to the slider (30); the adjusting assembly comprises a differential head (70) connected to the scraper assembly and a pressure adjusting member (80) abutting against the upper end surface of the scraper assembly; The scraper assembly comprises a scraper fixing plate (60) and a scraper (4) fixedly connected thereto; the scraper fixing plate (60) comprises a connecting vertical plate (61) and a connecting horizontal plate (62); the scraper (4) is fixedly arranged on the connecting vertical plate (61); The pressure regulating member (80) comprises a shaft sleeve (82); a push rod (81) is slidably arranged inside the shaft sleeve (82); a compression spring (84) located inside the shaft sleeve (82) is sleeved on the push rod (81); a limit nut (83) is arranged at the upper end of the push rod (81) extending out of the shaft sleeve (82); and the lower end of the push rod (81) extending out of the shaft sleeve (82) abuts against the upper end surface of the connecting cross plate (62).

2. The pressure-adjustable pole piece scraper according to claim 1, characterized in that: The connecting plate (10) is fixedly connected to a slider baffle (50) located at the bottom of the slide rail (20) and used for limiting the slider (30).

3. The pressure-adjustable pole piece scraper according to claim 1, characterized in that: The adjustment assembly comprises a fixed plate (40) located at the upper end of the slide rail (20) and fixedly connected to the connecting plate (10); a pressure adjustment member (80) and a differential head (70) are connected to the fixed plate (40).

4. The pressure-adjustable pole piece scraper according to claim 3, characterized in that: The fixing plate (40) is provided with a connection hole (41) threadedly connected to the pressure regulating member (80) and a through hole (42) fixedly connected to the differential head (70).

5. The pressure-adjustable pole piece scraper according to claim 3, characterized in that: The pressure regulating member (80) is provided with a fixing nut (85) that cooperates with the fixing plate (40).

6. The pressure-adjustable pole piece scraper according to claim 3, characterized in that: The movable rod (71) at the lower end of the micrometer head (70) passes through the fixed plate (40) and is connected to the scraper assembly; the connecting cross plate (62) is provided with a clearance hole (621); a stop block (72) is provided in the clearance hole (621); the lower end surface of the stop block (72) is provided with a limit retaining ring (721) that is limitedly matched with the lower end surface of the clearance hole (621); the stop block (72) is fixedly connected to the lower end of the movable rod (71).

7. The pressure-adjustable pole piece scraper according to claim 1, characterized in that: The push rod (81) comprises a push rod head (811) located at the lower end, a push rod middle part (813) located in the middle part, and a push rod end (814) located at the upper end; the diameter of the push rod middle part (813) is smaller than the diameter of the push rod head (811), thereby forming a push rod step (812); a through hole (823) is formed at the upper end of the sleeve (82) to allow the push rod middle part (813) to pass through; below the through hole (823) is a sleeve inner hole (821) whose hole diameter is larger than that of the through hole (823); a sleeve top step (822) is formed between the lower end of the through hole (823) and the sleeve inner hole (821); the compression spring (84) is sleeved on the push rod middle part (813); the top of the compression spring (84) is limited by the sleeve top step (822), and the bottom is limited by the push rod step (812).

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