A battery foil coating device for lithium batteries

Abstract

The present application provides a battery foil coating device for lithium batteries, and relates to the technical field of battery foil coating. A battery foil coating device for lithium batteries includes a bottom plate, a conveying roller, a limiting roller, a spacing adjustment component and a flattening limiting component. The second motor drives the second screw to rotate, and the second screw is connected to the lifting plate through a threaded ring, so that the lifting plate can be driven to move up and down. The lifting plate can drive the first loading plate and the second loading plate to connect the two ends of the base to rotate through the side transmission plates on both sides. The side gears, matching gears, driven gears, upper transmission gears and lower transmission gears can be driven to fine-tune the position through the limiting of the limiting bracket and the mounting bracket, and the side gears, matching gears, driven gears, upper transmission gears and lower transmission gears can also be connected together through the latching teeth, so as to achieve the effect of shortening the spacing between the side gears and adjusting the spacing between the conveying rollers and the limiting rollers.

Description

Technical Field

[0001] The present application relates to the technical field of battery foil coating, and in particular to a battery foil coating device for lithium batteries. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. Lithium metal batteries were first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal had very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.

[0003] The problem with the existing solution is that in the existing lithium battery production process, the power storage material needs to be applied to the battery foil for coating processing. The existing coating equipment uses conveyor rollers to convey the battery foil, which will cause the battery foil to be wrinkled and uneven, which will cause unevenness when applying the power storage coating, affecting the production efficiency of the lithium battery. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a battery foil coating device for lithium batteries, in which a No. 1 motor drives a No. 1 screw rod to rotate, and the No. 1 screw rod is connected to a matching rod by threaded engagement, and the matching rod is connected to a connecting seat of a No. 1 support rod through a fixed seat, so that the No. 1 support rod can be pushed to rotate around the mounting seat. Since the No. 2 support rod is installed in the No. 1 support rod through a mounting groove and cross-rotated, the rollers at the lower ends of the No. 1 support rod and the No. 2 support rod can be driven to be close to the surface of the conveying roller, so as to flatten the battery foil and make the battery foil flat for convenient battery coating work, and then the No. 2 motor drives the No. 2 screw rod to rotate, and the No. 2 screw rod By connecting to the lifting plate through a threaded ring, the lifting plate can be driven to move up and down. The lifting plate can drive the No. 1 loading plate and the No. 2 loading plate to connect the two ends of the base for rotation through the side transmission plates on both sides. The side gears, matching gears, driven gears, upper transmission gears and lower transmission gears can be driven to perform fine adjustments in position through the limit brackets and the mounting brackets. The side gears, matching gears, driven gears, upper transmission gears and lower transmission gears can also be connected together through the latch teeth, which can achieve the effect of shortening the spacing between the side gears and adjusting the spacing between the conveying rollers and the limiting rollers.

[0005] The present application also proposes a battery foil coating device for lithium batteries, comprising a base plate, a conveying roller, a limiting roller, a spacing adjustment component and a leveling limiting component, wherein the spacing adjustment component comprises a No. 2 motor, the output shaft of the No. 2 motor is fixedly connected to a No. 2 screw rod, the No. 2 motor is fixedly connected to one side of the base plate, the No. 2 screw rod is connected to a threaded ring through surface threaded engagement, a lifting plate is arranged on the outside of the threaded ring, and side transmission plates are rotatably installed at both ends of the lifting plate; the leveling limiting component comprises a fixed plate, a slide groove is arranged at one end of the lower surface of the fixed plate, a mounting seat is fixedly connected to one end of the fixed plate, a No. 2 support rod is installed in the slide groove, a No. 1 support rod is arranged on one side of the No. 2 support rod, a mounting groove is arranged in the middle of the No. 1 support rod, the No. 2 support rod is cross-rotatably installed with the No. 1 support rod through the mounting groove, and rollers are rotatably installed at the lower ends of the No. 1 support rod and the No. 2 support rod.

[0006] In some embodiments of the present application, the base plate is configured to be L-shaped, a spacing adjustment component is installed on the upper end of the base plate, two side gears are installed on one side of the spacing adjustment component, the two side gears are respectively fixedly connected to a conveying roller and a limiting roller, a leveling limiting component is installed above the spacing adjustment component, a roller is installed below the leveling limiting component, and the roller is located above the conveying roller.

[0007] In some embodiments of the present application, the upper ends of the lifting plates on both sides are fixedly connected to mounting rods, a rotating block is rotatably mounted on the mounting rod on one side, and a limiting rod is fixedly connected to the upper surface of the rotating block.

[0008] In some embodiments of the present application, the mounting rods on both sides are respectively rotatably installed with a No. 1 loading plate and a No. 2 loading plate, and a connecting base is rotatably installed between the lower ends of the No. 1 loading plate and the No. 2 loading plate, and a side gear is fixedly connected to one end of the conveying roller and is connected to a matching gear through a latching gear meshing, and one side of the matching gear is connected to a driven gear through a latching gear meshing, and the driven gear is connected to the side gear of the limiting roller through a latching gear meshing, and one end of the limiting roller is fixedly connected to another side gear, and an upper transmission gear is connected to the lower part through a latching gear meshing, and a lower transmission gear is connected to the lower part of the upper transmission gear through a latching gear meshing.

[0009] In some embodiments of the present application, a protruding block is fixedly connected at the center of the side gear, mating gear, driven gear, upper transmission gear and lower transmission gear, an extension shaft is fixedly connected to the front surface of the protruding block located on two of the side gears, mating gear, driven gear and upper transmission gear, and a limiting bracket is rotatably installed on the extension shaft of the side gear and the mating gear on one side.

[0010] In some embodiments of the present application, a mounting bracket is rotatably mounted on the extension shaft of the side gear, driven gear and mating gear on the other side, the extension shaft of the side gear on one side is rotatably mounted on the first loading plate, and the extension shaft of the side gear, upper transmission gear and lower transmission gear on the other side is rotatably mounted on the second loading plate.

[0011] In some embodiments of the present application, the upper end of the No. 1 support rod is fixedly connected to a connecting seat, a fixed seat is rotatably installed in the connecting seat, a matching rod is fixedly connected to one side of the fixed seat, one end of the matching rod is connected to a No. 1 screw rod through threaded engagement, one end of the No. 1 screw rod is fixedly connected to a No. 1 motor, and the No. 1 motor is fixedly connected to the upper surface of the fixed plate.

[0012] The beneficial effects of the present application are as follows: the No. 1 motor drives the No. 1 screw rod to rotate, the No. 1 screw rod is connected to the matching rod through threaded engagement, and the matching rod is connected to the connecting seat of the No. 1 support rod through a fixed seat, so that the No. 1 support rod can be pushed to rotate around the mounting seat. Since the No. 2 support rod is installed in the No. 1 support rod through the mounting groove and cross-rotates, the rollers at the lower ends of the No. 1 support rod and the No. 2 support rod can be driven to be close to the surface of the conveying roller, so as to flatten the battery foil and make the battery foil flat for convenient battery coating work, and then the No. 2 motor drives the No. 2 screw rod to rotate, and the No. 2 screw rod is connected to the No. 1 support rod through a threaded ring. The lifting plate can be driven to move up and down by the lifting plate. The lifting plate can drive the No. 1 loading plate and the No. 2 loading plate to connect the two ends of the base for rotation through the side transmission plates on both sides. The side gears, matching gears, driven gears, upper transmission gears and lower transmission gears can be driven to make fine adjustments in position through the limit brackets and the mounting brackets. The side gears, matching gears, driven gears, upper transmission gears and lower transmission gears can also be connected together through the latch teeth, so as to shorten the spacing between the side gears and adjust the spacing between the conveying rollers and the limiting rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 is a schematic three-dimensional diagram of the overall structure according to an embodiment of the present application;

[0015] Figure 2 is a schematic three-dimensional diagram of the combined structure of the spacing adjustment component and the paving limit component according to an embodiment of the present application;

[0016] Figure 3is a schematic three-dimensional diagram of the structure of a paving and limiting assembly according to an embodiment of the present application;

[0017] Figure 4 is a schematic three-dimensional diagram of a local structure according to an embodiment of the present application;

[0018] Figure 5 is a schematic three-dimensional diagram of the local structure of a spacing adjustment component according to an embodiment of the present application;

[0019] Figure 6 is a schematic three-dimensional diagram of another partial structure of the spacing adjustment component according to an embodiment of the present application;

[0020] Figure 7 It is a schematic three-dimensional diagram of the side gear matching structure according to an embodiment of the present application.

[0021] Icons: 1. Bottom plate; 2. Spacing adjustment assembly; 3. Paving limit assembly; 4. Roller; 5. Conveying roller; 6. Limit roller; 7. Side gear; 301. Fixed plate; 302. Slide; 303. Support rod No. 1; 304. Mounting seat; 305. Mounting slot; 306. Support rod No. 2; 307. Connecting seat; 308. Fixed seat; 309. Matching rod; 310. Screw rod No. 1; 311. Motor No. 1; 201. Motor No. 2; 202. Screw rod No. 2; 203, thread ring; 204, lifting plate; 205, side transmission plate; 206, mounting rod; 207, rotating block; 208, limiting rod; 209, loading plate No. 1; 210, extension shaft; 211, lower transmission gear; 212, connecting base; 213, loading plate No. 2; 214, limiting bracket; 215, protruding block; 216, driven gear; 217, matching gear; 218, mounting bracket; 219, upper transmission gear. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0023] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] A battery foil coating device for a lithium battery according to an embodiment of the first aspect of the present application is described below with reference to the accompanying drawings.

[0031] like Figure 1-Figure 7 As shown, a battery foil coating device for lithium batteries includes a bottom plate 1, a conveying roller 5, a limiting roller 6, a spacing adjustment component 2 and a flattening limiting component 3, wherein the spacing adjustment component 2 includes a No. 2 motor 201, the output shaft of the No. 2 motor 201 is fixedly connected to a No. 2 screw rod 202, the No. 2 motor 201 is fixedly connected to one side of the bottom plate 1, the No. 2 screw rod 202 is connected to a threaded ring 203 through a surface thread engagement, a lifting plate 204 is arranged outside the threaded ring 203, and side transmission plates 205 are rotatably installed at both ends of the lifting plate 204; The paving limit assembly 3 includes a fixed plate 301, a sliding groove 302 is provided at one end of the lower surface of the fixed plate 301, and a mounting seat 304 is fixedly connected to one end of the fixed plate 301. A No. 2 support rod 306 is installed in the sliding groove 302, a No. 1 support rod 303 is provided on one side of the No. 2 support rod 306, and a mounting groove 305 is provided in the middle of the No. 1 support rod 303. The No. 2 support rod 306 is cross-rotatably installed with the No. 1 support rod 303 through the mounting groove 305, and rollers 4 are rotatably installed at the lower ends of the No. 1 support rod 303 and the No. 2 support rod 306.

[0032] According to some embodiments of the present application, Figure 1-Figure 3As shown, the bottom plate 1 is set to be L-shaped, and a spacing adjustment component 2 is installed on the upper end of the bottom plate 1. Two side gears 7 are installed on one side of the spacing adjustment component 2. The two side gears 7 are respectively fixedly connected with a conveying roller 5 and a limiting roller 6. A paving limiting component 3 is installed above the spacing adjustment component 2, and a roller 4 is installed below the paving limiting component 3. The roller 4 is located above the conveying roller 5. The upper end of the No. 1 support rod 303 is fixedly connected to a connecting seat 307, and a fixed seat 308 is rotatably installed in the connecting seat 307. A matching rod 309 is fixedly connected to one side of the fixed seat 308. One end of the matching rod 309 is connected to a No. 1 screw rod 310 through threaded engagement. One end of the No. 1 screw rod 310 A motor No. 1 311 is fixedly connected, and the motor No. 1 311 is fixedly connected to the upper surface of the fixed plate 301. The motor No. 1 311 drives the screw rod No. 1 310 to rotate. The screw rod No. 1 310 is connected to the matching rod 309 through threaded engagement. The matching rod 309 is connected to the connecting seat 307 of the No. 1 support rod 303 through the fixed seat 308, so that the No. 1 support rod 303 can be pushed to rotate around the mounting seat 304. Since the No. 2 support rod 306 is cross-rotated and installed in the No. 1 support rod 303 through the mounting groove 305, the rollers 4 at the lower ends of the No. 1 support rod 303 and the No. 2 support rod 306 can be driven to be close to the surface of the conveying roller 5, so as to flatten the battery foil and make the battery foil flat for convenient battery coating.

[0033] According to some embodiments of the present application, Figure 4-Figure 7As shown, the upper ends of the lifting plates 204 on both sides are fixedly connected with mounting rods 206, and a rotating block 207 is rotatably installed on the mounting rod 206 on one side. The upper surface of the rotating block 207 is fixedly connected with a limiting rod 208, and the mounting rods 206 on both sides are respectively rotatably installed with a No. 1 loading plate 209 and a No. 2 loading plate 213, and a connecting base 212 is rotatably installed between the lower ends of the No. 1 loading plate 209 and the No. 2 loading plate 213. One end close to the conveying roller 5 is fixedly connected with a side gear 7 and is connected to a matching gear 217 through a latching gear meshing. One side of the matching gear 217 is connected to a driven gear 216 through a latching gear meshing. 6 is connected to the side gear 7 of the limiting roller 6 through the engagement of the teeth, one end of the limiting roller 6 is fixedly connected to another side gear 7, and the lower part is connected to the upper transmission gear 219 through the engagement of the teeth, and the lower part of the upper transmission gear 219 is connected to the lower part of the upper transmission gear 211 through the engagement of the teeth, and the center of the side gear 7, the matching gear 217, the driven gear 216, the upper transmission gear 219 and the lower transmission gear 211 is fixedly connected with a protruding block 215, and the front surface of the protruding block 215 located on the two side gears 7, the matching gear 217, the driven gear 216 and the upper transmission gear 219 is fixedly connected with an extension shaft 210, and the side gear 7 and the matching gear 217 on one side are fixedly connected to the upper transmission gear 219. The extension shaft 210 of the side gear 7, the driven gear 216 and the matching gear 217 is rotatably mounted with a limited bracket 214, and the extension shaft 210 of the side gear 7, the driven gear 216 and the matching gear 217 on the other side is rotatably mounted with a mounting bracket 218. The extension shaft 210 of the side gear 7 on one side is rotatably mounted on the first loading plate 209, and the extension shaft 210 of the side gear 7, the upper transmission gear 219 and the lower transmission gear 211 on the other side is rotatably mounted with the second loading plate 213. The second motor 201 drives the second screw rod 202 to rotate, and the second screw rod 202 is connected to the lifting plate 204 through the threaded ring 203, so as to drive the lifting plate 204 to move up and down. Through the side transmission plates 205 on both sides, the No. 1 loading plate 209 and the No. 2 loading plate 213 can be driven to connect the two ends of the base 212 for rotation. Through the limit of the limit bracket 214 and the mounting bracket 218, the side gear 7, the matching gear 217, the driven gear 216, the upper transmission gear 219 and the lower transmission gear 211 can be driven to perform fine adjustments in position. The side gear 7, the matching gear 217, the driven gear 216, the upper transmission gear 219 and the lower transmission gear 211 can also be connected together through the latch teeth, so as to achieve the effect of shortening the spacing between the side gears 7 and realizing the effect of adjusting the spacing between the conveying roller 5 and the limiting roller 6.

[0034] The working principle of this embodiment is:

[0035] First, the No. 1 screw rod 310 is driven to rotate by the No. 1 motor 311. The No. 1 screw rod 310 is connected to the matching rod 309 through threaded engagement. The matching rod 309 is connected to the connecting seat 307 of the No. 1 support rod 303 through the fixed seat 308, so that the No. 1 support rod 303 can be pushed to rotate around the mounting seat 304. Since the No. 2 support rod 306 is installed in the No. 1 support rod 303 through the mounting groove 305 and cross-rotates, the rollers 4 at the lower ends of the No. 1 support rod 303 and the No. 2 support rod 306 can be driven to be close to the surface of the conveying roller 5 to flatten the battery foil, so that the battery foil is flat and convenient for battery coating. Then, the No. 2 motor 201 drives the No. 2 screw rod 202 to rotate. The No. 2 screw rod 202 is connected to the lifting and lowering seat 304 through the threaded ring 203. The plate 204 can drive the lifting plate 204 to move up and down. The lifting plate 204 can drive the No. 1 loading plate 209 and the No. 2 loading plate 213 to connect the two ends of the base 212 to rotate through the side transmission plates 205 on both sides. The side gear 7, the matching gear 217, the driven gear 216, the upper transmission gear 219 and the lower transmission gear 211 can be driven to perform fine adjustment on the position through the limit bracket 214 and the mounting bracket 218. The side gear 7, the matching gear 217, the driven gear 216, the upper transmission gear 219 and the lower transmission gear 211 can also be connected together through the latch teeth, so as to achieve the effect of shortening the spacing between the side gears 7 and adjusting the spacing between the conveying roller 5 and the limiting roller 6.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A battery foil coating device for lithium batteries, comprising a base plate (1), a conveying roller (5), a limiting roller (6), a spacing adjustment component (2) and a flattening limiting component (3), Features: The bottom plate (1) is configured to be L-shaped, a spacing adjustment component (2) is installed at the upper end of the bottom plate (1), two side gears (7) are installed on one side of the spacing adjustment component (2), the two side gears (7) are respectively fixedly connected to a conveying roller (5) and a limiting roller (6), a paving limiting component (3) is installed above the spacing adjustment component (2), a roller (4) is installed below the paving limiting component (3), and the roller (4) is located above the conveying roller (5); A mounting bracket (218) is rotatably mounted on the extension shaft (210) of the side gear (7), the driven gear (216) and the mating gear (217) on the other side; the extension shaft (210) of the side gear (7) on one side is rotatably mounted on a first loading plate (209); and the extension shaft (210) of the side gear (7), the upper transmission gear (219) and the lower transmission gear (211) on the other side is rotatably mounted on a second loading plate (213); The spacing adjustment component (2) comprises a No. 2 motor (201), the output shaft of the No. 2 motor (201) is fixedly connected to a No. 2 screw rod (202), the No. 2 motor (201) is fixedly connected to one side of the bottom plate (1), the No. 2 screw rod (202) is connected to a threaded ring (203) through surface thread engagement, a lifting plate (204) is arranged outside the threaded ring (203), and side transmission plates (205) are rotatably mounted at both ends of the lifting plate (204); The upper ends of the lifting plates (204) on both sides are fixedly connected to mounting rods (206), a rotating block (207) is rotatably mounted on the mounting rod (206) on one side, and a limiting rod (208) is fixedly connected to the upper surface of the rotating block (207); The mounting rods (206) on both sides are rotatably mounted with a first loading plate (209) and a second loading plate (213), respectively; a connecting base (212) is rotatably mounted between the lower ends of the first loading plate (209) and the second loading plate (213); a side gear (7) close to one end of the conveying roller (5) is connected to a matching gear (217) through a latching tooth meshing; one side of the matching gear (217) is connected to a driven gear (216) through a latching tooth meshing; the driven gear (216) is connected to the side gear (7) of the limiting roller (6) through a latching tooth meshing; an upper transmission gear (219) is connected to the lower side of the side gear (7) of the limiting roller (6) through a latching tooth meshing; and a lower transmission gear (211) is connected to the lower side of the upper transmission gear (219) through a latching tooth meshing; A protruding block (215) is fixedly connected at the center of the side gear (7), the mating gear (217), the driven gear (216), the upper transmission gear (219) and the lower transmission gear (211); an extension shaft (210) is fixedly connected to the front surface of the protruding block (215) of the two side gears (7), the mating gear (217), the driven gear (216) and the upper transmission gear (219); and a limiting bracket (214) is rotatably mounted on the extension shaft (210) of the side gear (7) and the mating gear (217) on one side; The paving limit assembly (3) comprises a fixed plate (301), a slide groove (302) is provided at one end of the lower surface of the fixed plate (301), a mounting seat (304) is fixedly connected to one end of the fixed plate (301), a second support rod (306) is installed in the slide groove (302), a first support rod (303) is provided on one side of the second support rod (306), a mounting groove (305) is provided in the middle of the first support rod (303), the second support rod (306) is cross-rotatably mounted on the first support rod (303) through the mounting groove (305), and rollers (4) are rotatably mounted on the lower ends of the first support rod (303) and the second support rod (306); The upper end of the No. 1 support rod (303) is fixedly connected to a connecting seat (307), a fixing seat (308) is rotatably installed in the connecting seat (307), a matching rod (309) is fixedly connected to one side of the fixing seat (308), one end of the matching rod (309) is connected to a No. 1 screw rod (310) through threaded engagement, one end of the No. 1 screw rod (310) is fixedly connected to a No. 1 motor (311), and the No. 1 motor (311) is fixedly connected to the upper surface of the fixing plate (301).

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