Back roller cleaning device

Abstract

The utility model discloses a back roller cleaning device which comprises a non-woven fabric wiping assembly and a driving part for driving the non-woven fabric wiping assembly to be tightly attached to the surface of a back roller, the non-woven fabric wiping assembly comprises a support, an unwinding shaft, a winding shaft, two follow-up passing rollers, a non-woven fabric roll and a first motor, and the support is connected with the driving part. The unwinding shaft and the winding shaft are fixed to the side, away from the back roller, of the support in a vertically opposite and rotatable mode, the two follow-up passing rollers are fixed to the side, close to the back roller, of the support in a vertically opposite and rotatable mode, the unwinding shaft is sleeved with the non-woven fabric roll, and the starting end of the non-woven fabric roll bypasses the two follow-up passing rollers and then is detachably fixed to the winding shaft. The first motor is used for driving the winding shaft to rotate. The non-woven fabric is driven by the driving component to be tightly attached to the surface of the back roller, particles are transferred into the non-woven fabric in the opposite moving process of the non-woven fabric and the back roller, online automatic cleaning of the back roller is achieved, manual wiping is replaced, cleaning efficiency is improved, and product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pole piece manufacturing equipment, and specifically relates to a back roller cleaning device. BACKGROUND

[0002] In recent years, new energy vehicles have developed rapidly, and the battery driving system is the main factor affecting the performance and cost of new energy vehicles. Because of its high energy density, low memory effect and high working voltage, the rechargeable battery has become the preferred solution for power batteries in the current new energy vehicle battery driving system.

[0003] As a kind of secondary battery, lithium ion battery (LIB) has the characteristics of high energy density, long service life, energy saving and environmental protection.

[0004] The preparation process of lithium ion battery pole piece usually includes pulping, film coating, drying, rolling, cutting and other processes. Although the manufacturing processes of different manufacturers or different batteries may vary, pole piece rolling is an essential process. After rolling, the pole piece can reach a certain compaction density, which is very important for the improvement of the energy density of lithium ion batteries.

[0005] When the coated A-side pole piece reaches the B-side back roller after drying in the oven, due to the incomplete drying of the A-side film area or the floating of the adhesive on the A-side film area to the surface of the pole piece, small particles adhere to the surface of the back roller after contact with the back roller, as shown in Figure 1 The particles adhering to the surface of the back roller will lift the foil near the back roller, and the lifted foil will shorten the gap (H-h) between the original set foil and the die. Due to the leveling effect, the actual coating thickness on the foil is lower than the coating thickness at the adjacent position, as shown in Figure 2 .

[0006] The rolling process compacts the pole piece to the required thickness, and the compaction density of the position with thin coating thickness is smaller than that of the normal coating area. The appearance of the formed pole piece shows continuous and regular point-like color difference, which is removed as defective product in the die cutting process, affecting the coating yield. If the regular point-like defective product flows to the next process to make a battery, the battery will have lithium precipitation.

[0007] Back roller material sticking is produced during the production process, and the abnormality can only be found in the stop state. Back roller material sticking produces a large amount of batch scrap in the continuous production process.

[0008] Currently, back roller foreign matter cleaning is mainly done by manual reciprocating wiping with solvent-dusted paper, and the wiping process is mostly in a stop state, affecting the equipment running time. At the same time, manual online wiping is easy to touch the pole piece broken belt or not clean.

[0009] With the development of coating machine technology, the coating back roll width is from the conventional 800mm width to the current 1600mm, and the coating speed is from the conventional 30m / min to the current 80m / min, so the difficulty of manual cleaning is increasing. Content of the utility model

[0010] To solve at least one technical problem of the prior art, the utility model provides a back roll cleaning device.

[0011] To achieve the above-mentioned utility model purposes, the utility model adopts the technical scheme: a back roll cleaning device, including non-woven fabric wiping assembly and driving part for driving the non-woven fabric wiping assembly to be close to the surface of back roll, the non-woven fabric wiping assembly includes support, unwinding shaft, winding shaft, two follow-up over rollers, non-woven fabric roll and first motor, the support is connected with the driving part, the unwinding shaft and the winding shaft are rotatably fixed on the side of the support away from the back roll, two follow-up over rollers are rotatably fixed on the side of the support close to the back roll, the non-woven fabric roll is sleeved on the unwinding shaft, the beginning of the non-woven fabric roll is detachably fixed on the winding shaft after passing through two follow-up over rollers, and the first motor is used to drive the winding shaft to rotate.

[0012] Further, the diameters of the two follow-up over rollers are equal, and the two follow-up over rollers are both beyond the support towards the outer circumferential surface of the back roll.

[0013] Further, the first motor is connected with the winding shaft and drives the winding shaft to rotate towards the back roll.

[0014] Further, the back roll cleaning device further includes a receiving box, which is arranged below the follow-up over rollers and moves synchronously with the non-woven fabric wiping assembly.

[0015] Further, the receiving box is an open box body, and the opening of the receiving box faces the contact part of the follow-up over rollers and the back roll.

[0016] Further, the support includes a first mounting plate and a second mounting plate arranged oppositely along the axial direction of the back roll, and a connecting seat connecting the first mounting plate and the second mounting plate, and the unwinding shaft, the winding shaft and the two ends of the two follow-up over rollers are rotatably mounted on the first mounting plate and the second mounting plate.

[0017] Further, the motor is fixed on the first mounting plate or the second mounting plate, and the driving part is connected with the connecting seat.

[0018] Further, the width of the non-woven fabric of the non-woven fabric roll is equal to the length of the back roll.

[0019] Further, the width of the non-woven fabric of the non-woven fabric roll is less than the length of the back roller.

[0020] The back roller cleaning device further comprises a horizontal moving assembly for driving the non-woven fabric wiping assembly and the driving component to reciprocally move along the back roller axis.

[0021] Further, the horizontal moving assembly comprises a second motor, a lead screw connected with the second motor, a sliding block sleeved on the lead screw and moving along the extension direction of the lead screw, and a support platform fixed on the sliding block, and the driving component and the support are both fixed on the support platform.

[0022] The back roller cleaning device has the advantages that:

[0023] The non-woven fabric wiping assembly is driven by the driving component to tightly adhere to the surface of the back roller, and the first motor drives the winding shaft, so that the particles adhered to the back roller are transferred to the non-woven fabric during the relative movement of the non-woven fabric and the back roller, the on-line automatic cleaning of the back roller is realized, the manual wiping is replaced, the manpower is liberated, the labor cost is reduced, the cleaning efficiency is higher, the product quality is improved, and the batch abnormality is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A state diagram of the back roller with particles adhered to the surface during the coating of the pole piece;

[0025] Figure 2 A sectional view of the pole piece coated by the back roller with particles adhered to the surface;

[0026] Figure 3 A structure schematic view of the back roller cleaning device.

[0027] Wherein:

[0028] 1, back roller; 2, support; 3, unwinding shaft; 4, winding shaft; 5, follow-up roller; 6, non-woven fabric roll; 7, driving component; 8, material receiving box. DETAILED DESCRIPTION

[0029] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0030] It should be noted that the terms "first", "second" and the like in the description and in the claims of the present application and the above-described accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances to implement the embodiments of the present application described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0033] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0035] Reference Figure 1The utility model provides a back roll cleaning device, including non -woven fabric wiping subassembly and drive non -woven fabric wiping subassembly close to the drive part 7 of back roll 1 surface, non -woven fabric wiping subassembly includes with support 2, unwinding shaft 3, winding shaft 4, two follow -up rollers 5, non -woven fabric roll 6 and first motor, support 2 with drive part 7 is connected, unwinding shaft 3 with winding shaft 4 is opposite rotatably fixed in the side of support 2 away from back roll 1, two follow -up rollers 5 are opposite rotatably fixed in the side of support 2 close to back roll 1, non -woven fabric roll 6 is set in unwinding shaft 3, and the beginning of non -woven fabric roll 6 is detachably fixed on winding shaft 4 after passing two follow -up rollers 5, and first motor is used to drive winding shaft 4 rotation.

[0036] When needing to clean back roll 1, first drive non -woven fabric wiping subassembly close to back roll 1 by drive part 7, and make the non -woven fabric between two follow -up rollers 5 adhere to the surface of back roll 1, then first motor drives winding shaft 4 to rotate, and the particle adhered on back roll 1 is transferred to non -woven fabric.

[0037] The utility model drives non -woven fabric wiping subassembly's non -woven fabric to adhere to the surface of back roll 1 through drive part 7, and the particle adhered on back roll 1 is transferred to non -woven fabric in the moving process of non -woven fabric and back roll 1, realizes the on -line automatic cleaning of back roll 1, replaces manual wiping, liberates manpower, reduces artificial cost, improves the cleaning efficiency higher, improves product quality, reduces batch exception.

[0038] Further, two follow -up rollers 5 equal in diameter, and two follow -up rollers 5 exceed support 2 towards the outer circumferential surface of back roll 1, so that the non -woven fabric located outside two follow -up rollers 5 can contact back roll 1.

[0039] Further, the first motor is connected with the winding shaft 4 and drives the winding shaft 4 and the back roll 1 to rotate towards each other, so that the non -woven fabric can move towards the back roll 1, and the particles adhered on the back roll 1 are transferred to the non -woven fabric during the movement.

[0040] Further, the back roll cleaning device further comprises a material receiving box 8, the material receiving box 8 is arranged below the follow -up roller 5 and moves synchronously with the non -woven fabric wiping subassembly, and the material receiving box 8 is used for collecting the particles falling from the back roll 1 through the non -woven fabric wiping.

[0041] Further, the receiving box 8 is an open box, and the opening of the receiving box 8 is directed to the contact position of the follow-up roller 5 and the back roller 1, so that the non-woven fabric wipes the falling particles and the particles fall into the receiving box 8. The receiving box 8 is detachably fixed on the support 2 by a connecting piece, and the length of the opening of the receiving box 8 is adapted to the length of the follow-up roller 5, that is, the length of the opening of the receiving box 8 is not less than the width of the non-woven fabric.

[0042] Further, the support 2 comprises a first mounting plate and a second mounting plate which are oppositely arranged along the axis of the back roller 1, and a connecting seat connecting the first mounting plate and the second mounting plate, and the unwinding shaft 3, the winding shaft 4 and the two ends of the two follow-up rollers 5 are rotatably mounted on the first mounting plate and the second mounting plate.

[0043] Further, the motor is fixed on the first mounting plate or the second mounting plate, and the driving component 7 is connected with the connecting seat.

[0044] In some embodiments, the width of the non-woven fabric of the non-woven fabric roll 6 is equal to the length of the back roller 1, and at this time, the back roller cleaning device can wipe the whole back roller 1.

[0045] In some embodiments, the width of the non-woven fabric of the non-woven fabric roll 6 is less than the length of the back roller 1, and at this time, the back roller cleaning device cannot wipe the whole back roller 1, but can only wipe the back roller 1 in sections. Therefore, the back roller cleaning device further comprises a horizontal moving assembly for driving the non-woven fabric wiping assembly and the driving component 7 to move back and forth along the axis of the back roller 1, so as to complete the whole section wiping of the back roller 1.

[0046] Further, the horizontal moving assembly comprises a second motor, a lead screw connected with the second motor, a sliding block sleeved on the lead screw and moving along the extension direction of the lead screw, and a support platform fixed on the sliding block, and the driving component 7 and the support 2 are fixed on the support platform.

[0047] Further, the horizontal moving assembly comprises two supports which are spaced apart along the axis of the back roller 1, and the interval between the two supports is not less than the length of the back roller 1, and the two supports are used for supporting the lead screw. Specifically, the support is provided with a support through hole, one end of the lead screw passes through the support through hole and is connected with the second motor, and the other end of the lead screw is arranged in the support through hole. Wherein, the lead screw is rotatably arranged in the support through hole through a bearing.

[0048] The above description of disclosed embodiments enables one skilled in the art to make or use the application. Numerous modifications to the above described embodiments will be readily apparent to those skilled in the art and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A back roll cleaning device, characterized in that, The back roller cleaning device comprises a non-woven fabric wiping assembly and a driving component (7) for driving the non-woven fabric wiping assembly to be close to the surface of the back roller (1), the non-woven fabric wiping assembly comprises a support (2), a pay-off shaft (3), a winding shaft (4), two follow-up rollers (5), a non-woven fabric roll (6) and a first motor, the support (2) is connected with the driving component (7), the pay-off shaft (3) and the winding shaft (4) are rotatably fixed on the side of the support (2) away from the back roller (1), the two follow-up rollers (5) are rotatably fixed on the side of the support (2) close to the back roller (1), the non-woven fabric roll (6) is sleeved on the pay-off shaft (3), the starting end of the non-woven fabric roll (6) is detachably fixed on the winding shaft (4) after passing through the two follow-up rollers (5), and the first motor is used for driving the winding shaft (4) to rotate.

2. The back roll cleaning device of claim 1, wherein The diameters of the two follow-up rollers (5) are equal, and the two follow-up rollers (5) are both beyond the support (2) towards the outer circumferential surface of the back roller (1).

3. The back roll cleaning device of claim 1, wherein, The first motor is connected with the winding shaft (4) and drives the winding shaft (4) to rotate towards the back roller (1).

4. The back roll cleaning device of claim 1, wherein The back roller cleaning device further comprises a receiving box (8), and the receiving box (8) is arranged below the follow-up roller (5) and moves synchronously with the non-woven fabric wiping assembly.

5. The back roll cleaning device of claim 4, wherein, The receiving box (8) is an open box body, and the opening of the receiving box (8) faces the contact position of the follow-up roller (5) and the back roller (1).

6. The back roll cleaning device of claim 1, wherein, The support (2) comprises a first mounting plate and a second mounting plate arranged in the axial direction of the back roller (1), and a connecting seat connecting the first mounting plate and the second mounting plate, and the pay-off shaft (3), the winding shaft (4) and the two ends of the two follow-up rollers (5) are rotatably mounted on the first mounting plate and the second mounting plate.

7. The back roll cleaning device of claim 6, wherein The motor is fixed on the first mounting plate or the second mounting plate, and the driving component (7) is connected with the connecting seat.

8. The back roll cleaning device according to any one of claims 1 to 7, characterized in that The width of the non-woven fabric of the non-woven fabric roll (6) is equal to the length of the back roller (1).

9. The back roll cleaning device according to any one of claims 1 to 7, characterized in that The width of the non-woven fabric of the non-woven fabric roll (6) is less than the length of the back roller (1). The back roller cleaning device further comprises a horizontal moving assembly, and the horizontal moving assembly is used for driving the non-woven fabric wiping assembly and the driving component (7) to move reciprocally along the axial direction of the back roller (1).

10. The back roll cleaning device of claim 9, wherein, The horizontal moving assembly comprises a second motor, a lead screw connected with the second motor, a sliding block sleeved on the lead screw and moving along the extension direction of the lead screw, and a supporting platform fixed on the sliding block, and the driving component (7) and the support (2) are both fixed on the supporting platform.

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