Winding and unwinding mechanism for coating machine

Abstract

The utility model discloses a winding and unwinding mechanism for a coating machine, and belongs to the technical field of battery processing. The winding and unwinding mechanism for the coating machine comprises a rack, a clamping assembly, a telescopic driving assembly and a rotary driving assembly. The clamping assembly comprises two oppositely-arranged clamping pieces, at least one of the two clamping pieces is a movable clamping piece, and the movable clamping piece can move in the direction close to or away from the other clamping piece. The telescopic driving assembly comprises a fixed shaft sleeve, a telescopic shaft sleeve and a transmission shaft, the telescopic shaft sleeve can slidably penetrate into the fixed shaft sleeve in the axis direction of the telescopic shaft sleeve, the transmission shaft is rotationally connected to the telescopic shaft sleeve, and one end of the transmission shaft is connected with the corresponding movable clamping piece. The output end of the rotary driving assembly is connected with the other end of the transmission shaft. The winding and unwinding mechanism for the coating machine is compact in structure, and time and labor are saved when the mandrel is disassembled and assembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery processing technical field, concretely relates to a kind of winding and unwinding mechanism for coating machine. BACKGROUND

[0002] Lithium ion battery is widely used in Bluetooth headset, mobile phone, notebook computer, tablet computer, camcorder and other mobile electronic devices and portable power supply field due to its light weight, good safety performance and other advantages.

[0003] The production process of lithium ion battery usually includes coating process, and coating machine is the equipment for completing the coating operation of battery pole piece according to the process requirements of lithium ion battery. The coating machine in the related art usually includes unwinding mechanism, coating mechanism, drying system and winding mechanism. After the battery pole piece is unwound from the unwinding shaft of the unwinding mechanism, it enters the coating mechanism for coating, and the pole piece completing coating operation is dried by the drying system and then wound by the winding mechanism. However, the core shaft needs to be replaced after the unwinding mechanism and the winding mechanism are used for a period of time, and the coating machine in the related art is time-consuming and laborious when disassembling the core shaft, which leads to a long standby time for loading new core shaft or disassembling empty winding core shaft, affecting the coating efficiency of the entire coating machine.

[0004] Therefore, there is an urgent need for a winding and unwinding mechanism for coating machine to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims to solve or at least alleviate part or all of the above problems. Therefore, the utility model aims to provide a winding and unwinding mechanism for coating machine, which is compact in structure and saves time and labor when disassembling the core shaft, so as to ensure the coating efficiency of the entire coating machine.

[0006] In order to achieve the above target, the utility model adopts the following technical scheme:

[0007] A winding and unwinding mechanism for coating machine, comprising:

[0008] A rack;

[0009] A clamping assembly comprising two oppositely arranged clamping pieces, at least one of the two clamping pieces is a movable clamping piece, and the movable clamping piece can move towards or away from the other clamping piece;

[0010] A telescopic drive assembly, the telescopic drive assembly comprises a fixed shaft sleeve, a telescopic shaft sleeve and a transmission shaft, the telescopic shaft sleeve is slidably arranged in the fixed shaft sleeve along its axis, the transmission shaft is rotationally connected to the telescopic shaft sleeve, and one end of the transmission shaft is connected to the corresponding movable clamping piece;

[0011] A rotary drive assembly, the output end of which is connected to the other end of the transmission shaft.

[0012] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, a sliding shaft sleeve is further arranged between the fixed shaft sleeve and the telescopic shaft sleeve, and the telescopic shaft sleeve can slide along the axis direction of itself relative to the sliding shaft sleeve.

[0013] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, the sliding shaft sleeve is made of copper material.

[0014] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, the telescopic driving assembly further comprises a telescopic driving member and a connecting member, the connecting member is sleeved on the transmission shaft, and is connected with the telescopic shaft sleeve.

[0015] The number of the telescopic driving members is at least two, the at least two telescopic driving members are arranged at intervals along the circumferential direction of the connecting member, and the output ends of the telescopic driving members are all connected with the connecting member.

[0016] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, the connecting member comprises a connecting ring and connecting ears connected to the connecting ring, the at least two connecting ears are arranged at intervals along the circumferential direction of the connecting ring, each connecting ear is connected to the output end of one telescopic driving member, the connecting ring is sleeved on the transmission shaft, and is connected with the telescopic shaft sleeve.

[0017] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, a floating joint is further arranged between the telescopic driving member and the connecting member.

[0018] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, the rotating driving assembly comprises:

[0019] A rotating driving member is arranged on the rack;

[0020] A driving gear is rotatably arranged on the rack, the output end of the rotating driving member is connected with the driving gear, so as to drive the driving gear to rotate;

[0021] A driven gear is rotatably arranged on the rack, the transmission shaft is slidably connected with the driven gear, and can synchronously rotate with the driven gear;

[0022] A transmission belt is arranged around the driving gear and the driven gear, so as to be simultaneously tensioned by the driving gear and the driven gear.

[0023] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, a limiting key extending along the axis direction of the transmission shaft is arranged on the side wall of the transmission shaft, and a limiting groove matched with the limiting key is arranged on the driven gear.

[0024] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, at least one rotating bearing is arranged between the transmission shaft and the telescopic shaft sleeve.

[0025] As a preferred scheme of the unwinding and winding mechanism for the coating machine provided by the utility model, the clamping piece is a gas expansion chuck.

[0026] The utility model discloses the beneficial effect lies in:

[0027] The unwinding and winding mechanism for the coating machine provided by the utility model can realize stable clamping of the mandrel through the arrangement of two clamping pieces, can drive the corresponding clamping piece to rotate through the arrangement of the rotary drive assembly, realize rotation of the mandrel, and then realize stable winding or unwinding operation of the pole piece material belt, can drive the corresponding clamping piece to move to the direction of approaching or moving away from the other clamping piece through the arrangement of the telescopic drive assembly, adjust the spacing between the two clamping pieces, thereby facilitating dismounting or mounting of the mandrel, and can stably transmit through the arrangement of the relatively slidable fixed shaft sleeve and telescopic shaft sleeve, guarantee the stability of the clamping piece telescopic process. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment of the utility model, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the content of the embodiment of the utility model and these drawings without paying creative labor.

[0029] Figure 1 It is the structure schematic view of the unwinding and winding mechanism for the coating machine provided by the embodiment of the utility model;

[0030] Figure 2 It is one of the structure schematic view of the clamping assembly, telescopic drive assembly and rotary drive assembly provided by the embodiment of the utility model;

[0031] Figure 3 It is the second of the structure schematic view of the clamping assembly, telescopic drive assembly and rotary drive assembly provided by the embodiment of the utility model;

[0032] Figure 4 It is Figure 3 The sectional view under one visual angle;

[0033] Figure 5 It is Figure 3 The sectional view under another visual angle.

[0034] Reference signs:

[0035] 100, mandrel;

[0036] 10, frame;

[0037] 21, clamping member;

[0038] 30, telescopic drive assembly; 31, telescopic drive member; 32, connecting member; 321, connecting ring; 322, connecting lug; 33, fixed shaft sleeve; 34, telescopic shaft sleeve; 35, transmission shaft; 36, sliding shaft sleeve; 37, floating joint; 38, rotary bearing;

[0039] 40, rotary drive assembly; 41, rotary drive member; 42, driving gear; 43, driven gear; 44, transmission belt. DETAILED DESCRIPTION

[0040] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.

[0041] In the present application, the terms "comprise", "contain", "have" or any other variant thereof are intended to cover non-exclusive inclusions, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the process, method, article or device comprising the element.

[0042] In the present application, the term "and / or" is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships. For example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents a "and / or" relationship between the front and rear associated objects.

[0043] In the present application, the terms "connection", "combination", "coupling" and "installation" can be direct connection, combination, coupling or installation, or indirect connection, combination, coupling or installation. Among them, the direct connection means that two parts or components are connected together without setting an intermediate part, and the indirect connection means that two parts or components are connected with at least one intermediate part, and the two parts or components are connected through the intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0044] In the present utility model, the ordinary skilled in the art will understand that the relative terms (for example, "about", "approximately", "substantially" and the like) used in connection with a quantity or a condition include the value and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with a measurement of a particular value, the tolerance caused by manufacturing, assembly, use, and the like associated with a particular value. Such terms should also be considered to disclose a range defined by the absolute values of the two endpoints. The relative terms can refer to a certain percentage (for example, 1%, 5%, 10% or more) of the indicated value plus or minus. The numerical values not using the relative terms should also be disclosed as the specific values with tolerances. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to a certain degree (for example, 1 degree, 5 degrees, 10 degrees or more) plus or minus on the basis of the indicated angle.

[0045] In the present utility model, the ordinary skilled in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0046] In the present utility model, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the present utility model. In addition, it should also be understood in the context that when referring to one element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the lower side, the lower left side, the lower right side, the lower front side and the lower back side, etc.

[0047] The present embodiment provides a kind of coiling and uncoiling mechanism for coating machine, the coiling and uncoiling mechanism for coating machine can be used as coating machine uncoiling mechanism, also can be used as coating machine winding mechanism.When the coiling and uncoiling mechanism for coating machine is used as coating machine uncoiling mechanism, it is used to load the mandrel around pole piece, and realizes the uncoiling operation of pole piece;When the coiling and uncoiling mechanism for coating machine is used as coating machine winding mechanism, it is used to load the mandrel of empty roll, and realizes the winding operation to the pole piece of completion coating operation, and applicability is stronger.

[0048] Figure 1 The structure schematic diagram of the coiling and uncoiling mechanism for coating machine provided by the present embodiment is shown. Figure 2 The structure schematic diagram of one of the clamping assembly, telescopic drive assembly 30 and rotary drive assembly 40 provided by the present embodiment is shown. As shown in Figure 1, the coiling and uncoiling mechanism for coating machine comprises clamping assembly 10, telescopic drive assembly 30 and rotary drive assembly 40.Figures 1-2 As shown, the winding and unwinding mechanism for coating machine provided by the embodiment comprises a rack 10, a clamping assembly, an extension drive assembly 30 and a rotary drive assembly 40. The clamping assembly comprises two oppositely arranged clamping pieces 21, and a clamping space for clamping the mandrel 100 is formed between the two clamping pieces 21. At least one of the two clamping pieces 21 is a movable clamping piece, and the movable clamping piece can move towards or away from the other clamping piece 21. The extension drive assembly 30 is arranged in one-to-one correspondence with the movable clamping piece. The extension drive assembly 30 is configured to drive the corresponding clamping piece 21 to move towards or away from the other clamping piece 21, so as to adjust the distance between the two clamping pieces 21, thereby facilitating the disassembly or installation of the mandrel 100. The rotary drive assembly 40 is configured to drive the corresponding clamping piece 21 to rotate, so as to realize the rotation of the mandrel 100, and then realize the winding or unwinding operation of the pole piece material belt.

[0049] Figure 3 Fig. 2 shows a structural schematic diagram of the clamping assembly, the extension drive assembly 30 and the rotary drive assembly 40 provided by the embodiment. Figure 4 Fig. 3 shows a cross-sectional view in one perspective. Figure 3 Fig. 4 shows a cross-sectional view in another perspective. Figures 3-4 Fig. 5 shows a cross-sectional view in one perspective. Figure 2 As shown, the extension drive assembly 30 comprises a fixed shaft sleeve 33, an extension shaft sleeve 34 and a transmission shaft 35. The extension shaft sleeve 34 is slidably arranged in the fixed shaft sleeve 33 along the axis direction of the extension shaft sleeve 34. The transmission shaft 35 is rotationally connected to the extension shaft sleeve 34. One end of the transmission shaft 35 is connected to the corresponding movable clamping piece. The output end of the rotary drive assembly 40 is connected to the other end of the transmission shaft 35, so as to drive the corresponding clamping piece 21 to rotate through the transmission shaft 35.

[0050] Further, the telescopic driving assembly 30 further comprises a telescopic driving member 31, an output end of the telescopic driving member 31 is connected with the telescopic shaft sleeve 34 to drive the telescopic shaft sleeve 34 to move along the axis direction of the telescopic shaft sleeve 34, the transmission shaft 35 is rotationally connected with the telescopic shaft sleeve 34 and can synchronously move with the telescopic shaft sleeve 34. When the mandrel 100 needs to be replaced, the rotary driving assembly 40 can be stopped first to stop the rotation of the clamping members 21 and the mandrel 100, and then the telescopic driving member 31 is started to drive the telescopic shaft sleeve 34 to slide along the axis direction of the telescopic shaft sleeve 34 relative to the fixed shaft sleeve 33, so that the clamping members 21 are driven by the transmission shaft 35 to move in the direction away from each other to increase the distance between the two clamping members 21, and the old mandrel 100 can be removed and the new mandrel 100 can be placed in the clamping space by the operator. Then the telescopic driving member 31 is started again to drive the telescopic shaft sleeve 34 to slide along the axis direction of the telescopic shaft sleeve 34 relative to the fixed shaft sleeve 33, so that the clamping members 21 are driven by the transmission shaft 35 to move in the direction close to each other, so that the new mandrel 100 is stably clamped in the clamping space. The telescopic driving member 31 drives the telescopic shaft sleeve 34 to move relative to the fixed shaft sleeve 33, and then drives the clamping members 21 to move in the direction close to or away from each other through the transmission shaft 35, which can realize stable transmission of action and ensure the stability of the telescopic process of the clamping members 21.

[0051] It should be explained that when the winding and unwinding mechanism is used as the unwinding mechanism of the coating machine, the "old mandrel 100" refers to the mandrel 100 with an empty roll, and the "new mandrel 100" refers to the mandrel 100 with a pole piece tape wound thereon; when the winding and unwinding mechanism is used as the winding mechanism of the coating machine, the "old mandrel 100" refers to the mandrel 100 with a pole piece tape wound thereon after the coating operation is completed, and the "new mandrel 100" refers to the mandrel 100 with an empty roll.

[0052] As shown in Figure 1 In the present embodiment, both of the clamping members 21 are movable clamping members, and each movable clamping member 21 corresponds to a telescopic driving assembly 30. When the mandrel 100 is replaced, both of the telescopic driving assemblies 30 can work simultaneously to improve the adjustment efficiency of the distance between the two clamping members 21, so that the operator can quickly replace the mandrel 100. Of course, in other embodiments, one of the clamping members 21 can be a movable clamping member, and the other clamping member 21 can be a fixed clamping member, and the fixed clamping member is rotationally arranged on the rack 10. Correspondingly, the number of the telescopic driving assemblies 30 is one, and the telescopic driving assembly 30 is used to drive the movable clamping member to move in the direction close to or away from the fixed clamping member, which can also achieve the above-mentioned effect. The clamping member 21 is a gas inflation chuck, which is a standard part commonly used in the field, and the specific structure and working principle of the gas inflation chuck are not limited in the present embodiment.

[0053] In the embodiment, the number of the rotating driving assemblies 40 is one, and the rotating driving assembly 40 is used to drive one of the clamping members 21 to rotate, so as to drive the mandrel 100 to rotate, and the other clamping member 21 rotates along with the rotation of the mandrel 100, so as to realize the winding and unwinding operations of the pole piece material belt on the mandrel 100.

[0054] Optionally, a sliding sleeve 36 is arranged between the fixed sleeve 33 and the telescopic sleeve 34, and the telescopic sleeve 34 can slide along the axis direction of the telescopic sleeve 34 relative to the sliding sleeve 36. By arranging the sliding sleeve 36, the friction, vibration and noise between the fixed sleeve 33 and the telescopic sleeve 34 can be reduced, so as to ensure the stability of the relative sliding process of the fixed sleeve 33 and the telescopic sleeve 34. In the embodiment, the sliding sleeve 36 is made of copper material, which can reduce the telescopic resistance of the telescopic sleeve 34, improve the smoothness and wear resistance, and realize the stability of the telescopic process of the clamping member 21, so that the clamping member 21 can be quickly inserted into or separated from the mandrel 100, and the stability and reliability are high.

[0055] Optionally, at least one rotating bearing 38 is arranged between the transmission shaft 35 and the telescopic sleeve 34, so as to ensure that the transmission shaft 35 can stably rotate relative to the telescopic sleeve 34.

[0056] As shown in Figures 2-4 The telescopic driving assembly 30 further includes a connecting piece 32, the connecting piece 32 is sleeved on the transmission shaft 35 and connected with the telescopic sleeve 34, and the number of the telescopic driving members 31 is at least two, the at least two telescopic driving members 31 are arranged in the circumferential direction of the connecting piece 32 and connected with the connecting piece 32. By arranging the at least two telescopic driving members 31 and moving the telescopic sleeve 34 through the connecting piece 32, the stability of the telescopic process of the annular telescopic sleeve 34 can be ensured, and the telescopic sleeve 34 can be prevented from being damaged during the movement. In the embodiment, the number of the telescopic driving members 31 is two, and the two telescopic driving members 31 are symmetrically arranged. In the case of ensuring that the telescopic sleeve 34 can move stably, the number of the telescopic driving members 31 is reduced, so as to reduce the processing cost. Of course, in other embodiments, the number of the telescopic driving members 31 can be three, four or even more, which is not limited in the embodiment.

[0057] In the embodiment, the telescopic driving member 31 is a telescopic cylinder, which has the advantages of simple structure, easy installation, easy maintenance and stable and reliable action.

[0058] Specifically, the connecting piece 32 comprises a connecting ring 321 and connecting ears 322 connected to the connecting ring 321, at least two connecting ears 322 are arranged along the circumference of the connecting ring 321, each connecting ear 322 can correspond to one telescopic driving piece 31, the connecting ring 321 is sleeved on the transmission shaft 35 and connected with the telescopic shaft sleeve 34, so as to realize the effect that the telescopic driving piece 31 is drivingly connected with the telescopic shaft sleeve 34 through the connecting piece 32; and by arranging a plurality of connecting ears 322 corresponding to the output ends of the telescopic driving pieces 31 on the circumferential side of the connecting ring 321, the situation that the connecting piece 32 is too large in size to interfere with other mechanisms can also be avoided; in addition, this design can also reduce the material of the connecting piece 32, so as to reduce the processing cost to a certain extent.

[0059] Optionally, the connecting piece 32 is connected with the telescopic shaft sleeve 34 through fasteners, and the connection is tight and convenient to disassemble and assemble.

[0060] As shown in Figure 4 , a floating joint 37 is further arranged between the telescopic driving piece 31 and the connecting piece 32. By arranging the floating joint 37, the position adjustment in various angles and multiple directions can be realized during the movement of the telescopic driving piece 31 driving the connecting piece 32 to move, so as to avoid the positional deviation of the connecting piece 32 during the movement, and the floating joint 37 can absorb and relieve external impact, so as to ensure the stability of the connection between the telescopic driving piece 31 and the connecting piece 32.

[0061] Figure 5 A sectional view from another perspective is shown. Figure 3 A sectional view from another perspective is shown. Figure 5 and in combination with Figure 2 , the rotating driving assembly 40 comprises a rotating driving piece 41, a driving gear 42, a driven gear 43 and a transmission belt 44, the rotating driving piece 41 is arranged on the rack 10; the driving gear 42 is rotatably arranged on the rack 10, the output end of the rotating driving piece 41 is connected with the driving gear 42 to drive the driving gear 42 to rotate; the driven gear 43 is rotatably arranged on the rack 10, the transmission shaft 35 is slidingly connected with the driven gear 43 and can synchronously rotate with the driven gear 43; the transmission belt 44 is wound around the driving gear 42 and the driven gear 43 to be simultaneously tensioned by the driving gear 42 and the driven gear 43. When it is needed to wind or unwind the pole piece material belt on the mandrel 100, the rotating driving piece 41 can be started to drive the driving gear 42 to rotate, and the transmission belt 44 and the driven gear 43 drive the transmission shaft 35 and the clamping piece 21 connected with the transmission shaft 35 to rotate, so as to realize the winding or unwinding of the pole piece material belt on the mandrel 100. In this embodiment, the rotating driving piece 41 is a rotating motor, which has simple structure, is convenient to maintain and is reliable in operation.

[0062] Optionally, a limiting key extending along the axial direction of the transmission shaft 35 is arranged on the side wall of the transmission shaft 35, and a limiting groove matched with the limiting key is arranged on the driven gear 43, so that the transmission shaft 35 can slide along the axial direction relative to the driven gear 43 and can rotate synchronously with the driven gear 43.

[0063] The winding and unwinding mechanism for the coating machine provided by the embodiment can realize smooth and accurate transmission of rotary motion through the cooperation of the driving gear 42, the driven gear 43 and the transmission belt 44 and the transmission shaft 35, so as to realize the rotation of the clamping piece 21 and the winding or unwinding of the pole piece material belt on the mandrel 100; through the arrangement of the telescopic driving assembly 30 and the precise cooperation between the telescopic shaft sleeve 34 and the copper sliding shaft sleeve 36, the resistance during the telescopic motion of the telescopic shaft sleeve 34 can be reduced, the smoothness and wear resistance of the moving process can be improved, so that the clamping piece 21 can be quickly inserted into or separated from the mandrel 100.

[0064] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the above-mentioned embodiments do not limit the utility model in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A supply and take-up mechanism for an applicator, characterized in that, The utility model relates to a kind of machine tool clamping device, including: Frame (10); Clamping assembly, including two oppositely arranged clamping pieces (21), at least one of two described clamping pieces (21) is movable clamping piece, the movable clamping piece can be moved towards the direction close to or away from another described clamping piece (21); Telescopic drive assembly (30), the telescopic drive assembly (30) includes fixed sleeve (33), telescopic sleeve (34) and transmission shaft (35), the telescopic sleeve (34) is slidably arranged in the fixed sleeve (33) along the direction of its axis, the transmission shaft (35) is rotatably connected to the telescopic sleeve (34), and one end of the transmission shaft (35) is connected with corresponding movable clamping piece; Rotary drive assembly (40), its output end is connected with the other end of the transmission shaft (35).

2. The unwinding and winding mechanism for the coating machine according to claim 1, characterized in that, The fixed sleeve (33) and the telescopic sleeve (34) are further provided with sliding sleeve (36) between, and the telescopic sleeve (34) can slide along the direction of its axis relative to the sliding sleeve (36).

3. The unwinding and winding mechanism for the coating machine according to claim 2, wherein The sliding sleeve (36) is made of copper material.

4. The unwinding and winding mechanism for the coating machine according to claim 1, wherein The telescopic drive assembly (30) further includes telescopic drive (31) and connecting piece (32), the connecting piece (32) is sleeved on the transmission shaft (35), and is connected with the telescopic sleeve (34); The number of telescopic drive (31) is at least two, and at least two telescopic drive (31) is arranged along the circumference of the connecting piece (32), and the output end thereof is connected with the connecting piece (32).

5. The unwinding and winding mechanism for the coating machine according to claim 4, wherein The connecting piece (32) includes connecting ring (321) and connecting lug (322) connected on the connecting ring (321), at least two connecting lug (322) is arranged along the circumference of the connecting ring (321), and each connecting lug (322) is connected with the output end of one telescopic drive (31), the connecting ring (321) is sleeved on the transmission shaft (35), and is connected with the telescopic sleeve (34).

6. The unwinding and winding mechanism for the coating machine according to claim 4, wherein The floating joint (37) is further provided between the telescopic drive (31) and the connecting piece (32).

7. The unwinding and winding mechanism for the coater according to claim 1, wherein The rotary drive assembly (40) includes: Rotary drive (41) is arranged on the frame (10); Driving gear (42) is rotatably arranged on the frame (10), and the output end of the rotary drive (41) is connected with the driving gear (42), to drive the driving gear (42) to rotate; Driven gear (43) is rotatably arranged on the frame (10), and the transmission shaft (35) is slidably connected with the driven gear (43), and can rotate synchronously with the driven gear (43); Transmission belt (44) is arranged around the driving gear (42) and the driven gear (43), so as to be simultaneously tensioned by the driving gear (42) and the driven gear (43).

8. The unwinding and winding mechanism for the coating machine according to claim 7, wherein Limiting key extending along the axis direction is arranged on the side wall of the transmission shaft (35), and limiting groove matched with the limiting key is arranged on the driven gear (43).

9. The unwinding and winding mechanism for the coating machine according to claim 1, wherein At least one rotary bearing (38) is arranged between the transmission shaft (35) and the telescopic sleeve (34).

10. The unwinding and winding-up mechanism for a coater according to any one of claims 1 to 9, characterized in that The clamping member (21) is a gas expansion chuck.

Images