Coating structure in battery diaphragm coating equipment

Abstract

The utility model discloses a coating structure in battery diaphragm coating equipment. The coating structure comprises a bottom frame and two bearing plates, first guide rails and supporting plates are arranged on the two bearing plates, first bearing seats are arranged on the supporting plates, a plate roller is rotatably mounted on the two first bearing seats, and back rollers matched with the plate roller are rotatably mounted on the two bearing plates; a second guide rail and a sliding rail seat are arranged on the supporting plate, second bearing seats are arranged on the sliding rail seat, and anilox rollers are rotationally mounted on the two second bearing seats; a third guide rail and a sliding seat are arranged on the sliding rail seat, a fourth guide rail and reciprocating seats are arranged on the sliding seat, and a cross brace and a scraper box are mounted on the two reciprocating seats; a first distance adjusting mechanism is arranged between the sliding rail seat and the supporting plate, and a second distance adjusting mechanism is arranged between the sliding seat and the second bearing seat. The anilox roller is connected with a first driving mechanism, the printing roller is connected with a second driving mechanism, and the back roller is connected with a third driving mechanism; spacing adjustment linkage is realized, and the coating uniformity is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery diaphragm coating equipment, in particular to a coating structure in battery diaphragm coating equipment. Background Art

[0002] During the charge and discharge process of lithium-ion batteries, the separator separates the positive and negative electrodes, preventing contact and short circuits. It also absorbs sufficient electrolyte, provides ample electrolyte and lithium ion channels, and provides micropore self-sealing protection. The separator's lithium ion conductivity is directly related to the overall performance of the lithium-ion battery. The separator's performance determines the battery's interface structure, electrolyte retention, and internal resistance, which in turn affects key battery characteristics such as capacity, cycle performance, charge and discharge current density, and safety. Separators can also be coated to achieve higher heat resistance or liquid absorption, further improving battery safety.

[0003] The coating process includes the slurry loading and transfer process, which is composed of anilox rollers and plate rollers, and the diaphragm feeding process, which is composed of unwinding mechanisms, guide rollers, and backing rollers. When the slurry is transferred to the backing roller, the slurry is coated on the diaphragm passing through the backing roller, completing the diaphragm coating. During the coating process, the film load can be adjusted to change the coating thickness on the diaphragm. In the existing technology, the spacing is adjusted separately when adjusting the mutual matching positions. There is no relative linkage between the multiple rollers, resulting in the need for multiple adjustments to meet the required spacing between the rollers after the adjustment, making the spacing adjustment process more complicated. Utility Model Content

[0004] (1) Technical issues

[0005] The purpose of the utility model is to provide a coating structure in a battery separator coating device, which solves the problem in the prior art that the spacing adjustment between rollers is relatively independent and unlinked, and the spacing adjustment process is relatively cumbersome.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] The two guide rails are connected to each other with a pair of guide rails, and the guide rails are connected with a pair of support rails respectively. The guide rails are connected with the support rails by the second guide rail and the support rails are connected with the second guide rail. The guide rails are connected with the second guide rail by the second guide rail. The guide rails are connected with the second guide rail by the second guide rail.

[0009] Preferably, the first spacing adjustment mechanism includes a first mounting block fixed to the support plate, the first mounting block is provided with a fifth guide rail arranged longitudinally, and a first wedge block is slidably mounted on the fifth guide rail; a first roller that cooperates with the inclined surface of the first wedge block is installed on the slide rail seat; and the first mounting block is provided with a first longitudinal adjustment mechanism for driving the first wedge block to slide.

[0010] Preferably, the first longitudinal adjustment mechanism includes a first screw rod rotatably mounted on the first mounting block, the first screw rod is threadably engaged with the first wedge block, and a first motor driving the first screw rod to rotate is mounted on the first mounting block.

[0011] Preferably, the second spacing adjustment mechanism includes a sixth guide rail provided on the sliding seat and arranged longitudinally, and a second wedge block is slidably mounted on the sixth guide rail; a second roller that cooperates with the inclined surface of the second wedge block is installed on the second bearing seat; and a second longitudinal adjustment mechanism for driving the second wedge block to slide is installed on the sliding seat.

[0012] Preferably, the second longitudinal adjustment mechanism includes a second mounting block fixed on the sliding seat, a second screw rod is rotatably mounted on the second mounting block, the second screw rod is threadedly engaged with the second wedge block, and a manual wheel is connected to the second screw rod.

[0013] Preferably, an accordion shield is connected between the slide rail seat and the sliding seat.

[0014] Preferably, a second motor is mounted on the sliding seat, an eccentric shaft is mounted on the output shaft of the second motor, a spherical bearing is connected to the eccentric shaft, and a distal end of the spherical bearing is rotatably connected to the reciprocating seat.

[0015] Preferably, the scraper box is provided with a storage cavity and scraper blades located on both sides of the storage cavity and arranged obliquely, one side of the anilox roller is arranged in the storage cavity, and the scraper blades slide in cooperation with the surface of the anilox roller; the scraper box is provided with a liquid inlet located at its bottom and an overflow port located at its top.

[0016] Preferably, the scraper box is provided with sealing gaskets located at both ends of the storage cavity.

[0017] Preferably, the first driving mechanism, the second driving mechanism and the third driving mechanism all include a reducer and a driving motor connected to the reducer.

[0018] (3) Beneficial effects

[0019] The anilox roller is mounted on the support plate through the second bearing seat, the slide rail seat and the second guide rail, and the plate roller is mounted on the support plate through the first bearing seat, and the support plate is mounted on the carrier plate through the first guide rail. At the same time, the relative distance between the slide rail seat and the support plate is adjusted by the first spacing adjustment mechanism, so as to adjust the distance between the anilox roller and the plate roller. During the adjustment process, the support plate can slide relative to the carrier plate to adjust the distance between the plate roller and the back roller, so that the rollers can be adaptively linked when adjusting the distance between the rollers, so that the coating thickness between the rollers can be adjusted synchronously.

[0020] At the same time, the distance between the anilox roller and the doctor box is adjusted by the second distance adjustment mechanism, and the thickness is adjusted from the feeding end to match the distance adjustment state between the rollers;

[0021] The first drive mechanism, the second drive mechanism and the third drive mechanism are used to independently realize the independent rotation of the anilox roller, the plate roller and the back roller, so as to facilitate the slurry transfer and coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0024] Figure 3 This is a front view structural diagram of an embodiment of the utility model;

[0025] Figure 4 for Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 5 This is a side view of a partial structure diagram of an embodiment of the present utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the anilox roller and the doctor box in the embodiment of the utility model;

[0028] exist Figures 1 to 6 In the figure, the corresponding relationship between the component names or lines and the figure numbers is as follows:

[0029] Base frame 1, carrying plate 2, first guide rail 3, support plate 4, first bearing seat 5, plate roller 6, back roller 7, second guide rail 8, slide rail seat 9, second bearing seat 10, anilox roller 11, third guide rail 12, sliding seat 13, fourth guide rail 14, reciprocating seat 15, cross brace 16, scraper box 17, storage chamber 170, first spacing adjustment mechanism 18, first mounting block 181, fifth guide rail 182, first wedge block 183, first roller 184, first longitudinal adjustment mechanism 185, first wire Rod 186, first motor 187, second spacing adjustment mechanism 19, sixth guide rail 191, second wedge block 192, second roller 193, second longitudinal adjustment mechanism 194, second mounting block 195, second screw rod 196, manual wheel 197, first drive mechanism 20, second drive mechanism 21, third drive mechanism 22, accordion guard 23, second motor 24, eccentric shaft 25, spherical bearing 26, scraper blade 27, liquid inlet 28, overflow port 29, sealing gasket 30. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See also Figure 1 one Figure 6As shown, in the embodiment of the present invention, a coating structure in a battery diaphragm coating device is proposed, which is a part of the battery diaphragm coating device, and is used to transfer the slurry and apply it to the diaphragm, and can realize point-type coating. Specifically, it includes a base frame 1 and two supporting plates 2 installed on the base frame 1 at intervals, the two supporting plates 2 are provided with a first guide rail 3 and a support plate 4 slidably installed on the first guide rail 3, the support plate 4 is provided with a first bearing seat 5, the two first bearing seats 5 are rotatably mounted with a plate roller 6, the two supporting plates 2 are rotatably mounted with a back roller 7 that cooperates with the plate roller 6, the back roller 7 is used to guide and support the passing diaphragm, and the plate roller 6 is used to transfer the slurry and complete the coating on the diaphragm after cooperating with the back roller 7, wherein the plate roller 6 is provided with a number of evenly distributed protrusion structures, which are set corresponding to the coating parts and are spread out in a dot array.

[0032] Through the action of the first guide rail 3, the support plate 4 can be slidably adjusted relative to the carrier plate 2 to adjust the spacing distance between the plate roller 6 and the back roller 7, so as to adjust the coating thickness on the diaphragm and adapt to the spacing when grabbing the slurry in the dispensing state.

[0033] At the same time, a second guide rail 8 and a slide rail seat 9 slidably mounted on the second guide rail 8 are provided on the support plate 4, and a second bearing seat 10 is provided on the slide rail seat 9. Anilox rollers 11 are rotatably mounted on two of the second bearing seats 10. Through the action of the second guide rail 8, the slide rail seat 9 can be slidably adjusted relative to the support plate 4 to achieve adjustment of the spacing distance between the anilox roller 11 and the plate roller 6 to meet the slurry transfer after the coating thickness changes.

[0034] Specifically, the slide rail seat 9 is provided with a third guide rail 12 and a sliding seat 13 slidably mounted on the third guide rail 12. The sliding seat 13 is provided with a fourth guide rail 14 and a reciprocating seat 15 slidably mounted on the fourth guide rail 14. A cross brace 16 and a scraper box 17 mounted on the cross brace 16 are mounted on the two reciprocating seats 15. The position of the sliding seat 13 is adjusted by the third guide rail 12 to adjust the spacing between the scraper box 17 and the anilox roller 11. After the coating thickness is adjusted, the thickness is synchronously adjusted during the slurry feeding stage. At the same time, the fourth guide rail 14 enables the reciprocating seat 15 to slide along the axis of the cross brace 16 and the scraper box 17 relative to the anilox roller 11, thereby adjusting the width and position of the slurry feeding on the anilox roller 11. Specifically, corresponding to the position of the raised structure on the plate roller 6, a corresponding groove structure is provided on the anilox roller 11. When the slurry is loaded, the groove structure is used to fill the slurry and move it to the position of the plate roller 6. The slurry in the corresponding groove structure is grabbed by the raised structure and moved to be coated on the diaphragm, thereby realizing glue coating.

[0035] At the same time, a first spacing adjustment mechanism 18 is provided between the slide rail seat 9 and the support plate 4, and a second spacing adjustment mechanism 19 is provided between the sliding seat 13 and the second bearing seat 10. The first spacing adjustment mechanism 18 is used to adjust the spacing between the slide rail seat 9 and the support plate 4, that is, to adjust the interval between the anilox roller 11 and the plate roller 6, and the second spacing adjustment structure is used to adjust the spacing between the scraper box 17 and the anilox roller 11, so as to achieve matching spacing throughout the entire process of slurry loading, transfer and coating, thereby realizing the correlation of spacing adjustment.

[0036] Specifically, a first drive mechanism 20 is connected to the anilox roller 11, a second drive mechanism 21 is connected to the plate roller 6, and a third drive mechanism 22 is connected to the back roller 7. When the anilox roller 11, the plate roller 6 and the back roller 7 are driven to rotate, they are driven separately and controlled independently.

[0037] Specifically, the first spacing adjustment mechanism 18 includes a first mounting block 181 fixed on the support plate 4, and a fifth guide rail 182 arranged longitudinally is provided on the first mounting block 181, and a first wedge block 183 is slidably installed on the fifth guide rail 182, and a first roller 184 that cooperates with the inclined surface of the first wedge block 183 is installed on the slide rail seat 9. The position of the first wedge block 183 is moved by the inclined surface of the first wedge block 183 on the first roller 184. At the same time, a first longitudinal adjustment mechanism 185 for driving the first wedge block 183 to slide is provided on the first mounting block 181. When the first wedge block 183 is adjusted to diffract the fifth guide rail 182 longitudinally by the first longitudinal adjustment mechanism 185, the spacing between the anilox roller 11 and the plate roller 6 is adjusted by cooperating with the first roller 184 through the inclined surface.

[0038] Among them, the first longitudinal adjustment mechanism 185 includes a first screw rod 186 rotatably mounted on the first mounting block 181, the first screw rod 186 is threadedly engaged with the first wedge block 183, and a first motor 187 that drives the first screw rod 186 to rotate is installed on the first mounting block 181. After the first motor 187 rotates with the first screw rod 186, it drives the first wedge block 183 to slide along the fifth guide rail 182 under the threaded engagement with the first wedge block 183.

[0039] Specifically, the second spacing adjustment mechanism 19 includes a sixth guide rail 191 provided on the sliding seat 13 and arranged longitudinally, and a second wedge block 192 is slidably installed on the sixth guide rail 191; a second roller 193 that cooperates with the inclined surface of the second wedge block 192 is installed on the second bearing seat 10, and at the same time, a second longitudinal adjustment mechanism 194 for driving the second wedge block 192 to slide is installed on the sliding seat 13; after the second wedge block 192 is driven to slide by the second longitudinal adjustment mechanism 194, the relative spacing adjustment is achieved through the cooperation between the inclined surface and the second roller 193.

[0040] Among them, the second longitudinal adjustment mechanism 194 includes a second mounting block 195 fixed on the sliding seat 13, and a second screw rod 196 is rotatably mounted on the second mounting block 195. The second screw rod 196 is threadedly engaged with the second wedge block 192, and a manual wheel 197 is connected to the second screw rod 196. The manual wheel 197 rotates the second screw rod 196 to drive the second wedge block 192 to slide on the sixth guide rail 191, thereby realizing the adjustment of the distance between the scraper box 17 and the anilox roller 11.

[0041] Specifically, the second spacing adjustment mechanism 19 is for fine-tuning after the linkage adjustment. An accordion shield 23 is connected between the rail seat 9 and the sliding seat 13. The accordion shield 23 acts to pull the sliding member to slide synchronously with the rail seat 9 when the rail seat 9 slides relative to the support plate 4, thereby achieving linkage adjustment of the spacing.

[0042] At the same time, a second motor 24 is installed on the sliding seat 13, and an eccentric shaft 25 is installed on the output shaft of the second motor 24. A joint bearing 26 is connected to the eccentric shaft 25, and the end of the joint bearing 26 is rotatably connected to the reciprocating seat 15. The second motor 24 rotates the eccentric shaft 25 to realize the reciprocating swing of the joint bearing 26, thereby pulling the reciprocating seat 15 to slide on the fourth guide rail 14, allowing the cross brace 16 to slide with the scraper box 17 in the axial direction of the anilox roller 11.

[0043] In which, a storage cavity 170 and scraper blades 27 located on both sides of the storage cavity 170 and arranged obliquely are provided on the scraper box 17, one side of the anilox roller 11 is provided in the storage cavity 170, and the scraper blade 27 slides with the surface of the anilox roller 11. At the same time, a liquid inlet 28 located at the bottom and an overflow port 29 located at the top are provided on the scraper box 17; the slurry is filled into the storage cavity 170 of the scraper box 17 through the liquid inlet 28 and continuously flows out from the overflow port 29, thereby ensuring that there are no bubbles in the slurry in the storage cavity 170, filling the groove structure on the anilox roller 11, and the excess slurry is scraped into the storage cavity 170 through the scraper blade 27.

[0044] At the same time, sealing gaskets 30 are installed on the scraper box 17 at both ends of the storage chamber 170. The sealing gaskets 30 maintain sealing during the rotation of the anilox roller 11 to prevent the slurry from leaking outward from both ends of the storage chamber 170.

[0045] Specifically, the first driving mechanism 20 , the second driving mechanism 21 and the third driving mechanism 22 all include a reducer and a driving motor connected to the reducer.

[0046] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0047] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., etc., are used solely for distinction and description, and should not be construed as indicating or implying relative importance.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A coating structure in a battery separator coating device, characterized in that: The invention comprises a base frame and two supporting plates installed on the base frame at intervals, wherein the two supporting plates are provided with a first guide rail and a support plate slidably installed on the first guide rail, the support plate is provided with a first bearing seat, the two first bearing seats are rotatably mounted with a plate roller, and the two supporting plates are rotatably mounted with a back roller cooperating with the plate roller; The support plate is provided with a second guide rail and a slide rail seat slidably mounted on the second guide rail, the slide rail seat is provided with a second bearing seat, and anilox rollers are rotatably mounted on two of the second bearing seats; The slide rail seat is provided with a third guide rail and a sliding seat slidably mounted on the third guide rail, the sliding seat is provided with a fourth guide rail and a reciprocating seat slidably mounted on the fourth guide rail, and the two reciprocating seats are provided with a cross brace and a scraper box mounted on the cross brace; A first distance adjustment mechanism is provided between the slide rail seat and the support plate, and a second distance adjustment mechanism is provided between the slide seat and the second bearing seat; The anilox roller is connected to a first driving mechanism, the plate roller is connected to a second driving mechanism, and the back roller is connected to a third driving mechanism.

2. The coating structure in the battery separator coating equipment according to claim 1, characterized in that: The first spacing adjustment mechanism includes a first mounting block fixed to the support plate, the first mounting block is provided with a fifth guide rail arranged longitudinally, and a first wedge block is slidably mounted on the fifth guide rail; The slide rail seat is provided with a first roller which cooperates with the inclined surface of the first wedge block; The first mounting block is provided with a first longitudinal adjustment mechanism for driving the first wedge block to slide.

3. The coating structure in the battery separator coating equipment according to claim 2, characterized in that: The first longitudinal adjustment mechanism includes a first screw rod rotatably mounted on the first mounting block, the first screw rod is threadably engaged with the first wedge block, and a first motor driving the first screw rod to rotate is mounted on the first mounting block.

4. The coating structure in a battery separator coating device according to claim 1, characterized in that: The second spacing adjustment mechanism includes a sixth guide rail provided on the sliding seat and arranged longitudinally, a second wedge block being slidably mounted on the sixth guide rail; a second roller engaged with the inclined surface of the second wedge block being mounted on the second bearing seat; The sliding seat is provided with a second longitudinal adjustment mechanism for driving the second wedge-shaped block to slide.

5. The coating structure in the battery separator coating equipment according to claim 4, characterized in that: The second longitudinal adjustment mechanism includes a second mounting block fixed on the sliding seat, a second screw rod is rotatably mounted on the second mounting block, the second screw rod is threadedly engaged with the second wedge block, and a manual wheel is connected to the second screw rod.

6. The coating structure in the battery separator coating equipment according to claim 5, characterized in that: An accordion shield is connected between the slide rail seat and the sliding seat.

7. The coating structure in the battery separator coating equipment according to claim 1, characterized in that: A second motor is mounted on the sliding seat, an eccentric shaft is mounted on the output shaft of the second motor, a spherical bearing is connected to the eccentric shaft, and a distal end of the spherical bearing is rotatably connected to the reciprocating seat.

8. The coating structure in the battery separator coating equipment according to claim 7, characterized in that: The scraper box is provided with a material storage cavity and scraper blades located on both sides of the material storage cavity and arranged obliquely. One side of the anilox roller is arranged in the material storage cavity, and the scraper blades are slidably matched with the surface of the anilox roller. The scraper box is provided with a liquid inlet located at the bottom and an overflow port located at the top.

9. The coating structure in the battery separator coating equipment according to claim 8, characterized in that: The scraper box is provided with sealing pads located at both ends of the material storage cavity.

10. The coating structure in the battery separator coating equipment according to claim 1, characterized in that: The first driving mechanism, the second driving mechanism and the third driving mechanism each include a reducer and a driving motor connected to the reducer.

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