Lead-in rotating device and coating apparatus

Abstract

This application relates to a guide belt rotation device and coating equipment. The guide belt rotation device includes a guide belt rod, a traction mechanism, and a guide wheel mechanism. The traction mechanism includes a traction member, and the guide wheel mechanism includes a guide wheel assembly. The traction member is wound around the guide wheel assembly, which guides the rotation trajectory of the traction member. The guide belt rod is connected to the traction member and is used to wind the material strip. When the guide belt rod moves with the traction member, it guides the material strip to fold back along a preset path. The solution provided by this application not only reduces mechanical complexity, thereby reducing machining and assembly costs, but also, by combining the traction member and the guide wheel assembly, can adapt to complex path requirements involving bending and multi-directional turns.

Description

Technical Field

[0001] This application relates to the field of new energy equipment technology, and in particular to a belt rotary device and coating equipment. Background Technology

[0002] The drying oven of the coating equipment is the core drying unit in the coating production line. It is mainly used to heat the coated electrode to evaporate the solvent or moisture in the coating, thereby achieving the curing and drying of the coating.

[0003] In related technologies, the conveyor mechanism of the oven has a complex structure and can only guide the electrode sheet to be transported along a straight path. It cannot guide the electrode sheet to be transported along a curved path or an irregular path, so it is difficult to meet the conveying requirements of the electrode sheet in the complex folding path inside the folding box. Utility Model Content

[0004] To solve or partially solve the problems existing in the related technologies, this application provides a guide belt rotary device and coating equipment, which can not only reduce mechanical complexity, thereby reducing machining and assembly costs, but also, by combining the traction component with the guide wheel assembly, adapt to the requirements of complex paths with bending and multi-directional turns.

[0005] The first aspect of this application provides a belt-driving device, comprising:

[0006] Guide rod, traction mechanism and guide wheel mechanism;

[0007] The traction mechanism includes a traction member, the guide wheel mechanism includes a guide wheel assembly, the traction member is wound around the guide wheel assembly, and the guide wheel assembly is used to guide the rotation trajectory of the traction member;

[0008] The guide rod is connected to the traction member. The guide rod is used to wind the material strip. When the guide rod moves with the traction member, it guides the material strip to fold back along a preset path.

[0009] In one embodiment, the guide wheel assembly includes an outer wheel and an inner wheel, and the arrangement direction of the outer wheel and the inner wheel is perpendicular to the movement direction of the traction member;

[0010] A guide groove is formed between the outer wheel and the inner wheel to accommodate the connector of the traction member, and the guide groove is used to constrain the lateral displacement of the traction member.

[0011] In one embodiment, the inner wheel can rotate independently relative to the outer wheel. The inner wheel has a plurality of grooves circumferentially arranged around its axis of rotation. When the guide rod moves to the inner wheel, the end of the guide rod is received in the groove, and the inner wheel is driven to rotate by the guide rod.

[0012] In one embodiment, guide edges are provided on both sides of the groove. When the guide rod is not aligned with the opening of the groove, the rotation of the inner wheel causes the guide rod to move along the guide edges to engage with the groove.

[0013] In one embodiment, the guide groove is a V-shaped circular arc groove.

[0014] In one embodiment, the guide wheel assembly further includes a pressure wheel, which is disposed on the opposite side of the guide wheel assembly. The traction member is located between the pressure wheel and the guide wheel assembly. The pressure wheel is used to apply pressure to the traction member toward the guide wheel assembly to increase the static friction between the traction member and the guide wheel assembly.

[0015] In one embodiment, the pressure roller is offset from the guide roller assembly; or, the pressure roller is at a predetermined distance from the guide roller assembly in the direction of movement of the traction member.

[0016] In one embodiment, the guide rod is connected to the traction member via a connector to form a rigid linkage; the connector includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are perpendicularly connected, the first connecting part is axially connected to the guide rod body, and the second connecting part is parallel to the traction and fixedly connected to a specific position of the traction member.

[0017] In one embodiment, a two-layer guide wheel mechanism is provided, arranged in parallel. Two traction members are arranged in the lateral direction, and the two traction members move synchronously. The two ends of the guide rod are fixedly connected to the connectors on the two traction members respectively. One of the traction members is wound around two guide wheel groups in the upper and lower layers on one lateral side, and the other traction member is wound around two guide wheel groups in the upper and lower layers on the other lateral side.

[0018] A second aspect of this application provides a coating apparatus, comprising:

[0019] The oven body; and

[0020] As described in the first aspect above, the belt rotation device is used to guide the material belt inside the oven body to move along a predetermined path.

[0021] The technical solution provided in this application may include the following beneficial effects:

[0022] The proposed solution includes a guide belt rotation device comprising a guide belt rod, a traction mechanism, and a guide wheel mechanism. The traction mechanism includes a traction element, and the guide wheel mechanism includes a guide wheel assembly. The traction element is wound around the guide wheel assembly, which guides the rotation trajectory of the traction element. The guide belt rod is connected to the traction element and is used to wind the material belt. As the guide belt rod moves with the traction element, it guides the material belt to fold back along a preset path. Thus, the winding arrangement of the traction element and the guide wheel assembly forms a direct power transmission path, eliminating intermediate transmission mechanisms, reducing mechanical complexity, and consequently reducing machining and assembly costs. The traction element, combined with a multi-wheel guide wheel assembly design, can adapt to complex paths involving bending and multi-directional turns.

[0023] Furthermore, a guide groove is formed between the outer and inner wheels to accommodate the traction component. This guide groove, a V-shaped arc groove, constrains the lateral offset of the traction component. The diameter of the traction component matches the radius of curvature of the arc groove bottom. When the wire rope is inserted into the guide groove, the two inclined surfaces of the V-shaped groove contact the outer circumference of the wire rope, and the arc surface at the bottom of the groove contacts the bottom line of the rope, forming a stable three-point contact constraint. This prevents the rope from slipping, thus stabilizing the wire rope's path, reducing offset caused by external forces, and improving the reliability of reversing operations.

[0024] Furthermore, multiple grooves are evenly distributed along the circumference of the inner wheel. Under the contact action between the guide rod and the groove wall, the guide rod applies a tangential force to the inner wheel, driving the inner wheel to rotate around the support shaft. The rotation of the inner wheel is synchronized with the movement of the traction component, so that the passive rotation of the inner wheel automatically matches the position of the guide rod, which can eliminate jamming caused by accumulated assembly errors and improve the fault tolerance of the mechanism.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0026] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0027] Figure 1 This is a schematic diagram of the guide wheel assembly of the guide belt rotation device shown in the embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the connector structure of the guide rod of the guide belt rotation device shown in the embodiments of this application;

[0029] Figure 3 This is a schematic diagram of the overall structure of the guide wheel assembly of the guide belt rotary device shown in the embodiments of this application.

[0030] Reference numerals: 100, guide wheel mechanism; 110, guide rod; 111, first connecting part; 112, second connecting part; 120, traction member; 130, guide wheel assembly; 131, outer wheel; 1311, guide groove; 132, inner wheel; 1321, groove; 1322, guide edge; 133, pressure wheel; 134, support member; 135, connecting arm; 100a, first guide wheel mechanism; 100b, second guide wheel mechanism; 100c, third guide wheel mechanism; 100d, fourth guide wheel mechanism; 120a, first traction member; 120b, second traction member. Detailed Implementation

[0031] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0032] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In related technologies, the conveyor belt mechanism of the drying oven has a complex structure and can only guide the electrode sheets along a straight path, unable to guide them along curved or irregular paths. Therefore, it is difficult to meet the conveying requirements of the electrode sheets in complex turning paths within the turning box. To address the above problems, this application provides a conveyor belt rotation device and coating equipment, which not only reduces mechanical complexity, thereby reducing machining and assembly costs, but also, by combining the traction component with the guide wheel assembly, can adapt to the requirements of complex paths involving bending and multi-directional turns.

[0036] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of the guide wheel assembly of the guide belt rotary device shown in the embodiments of this application.

[0038] See Figure 1 This application provides a guide belt rotation device, including a guide belt rod 110, a traction mechanism, and a guide wheel mechanism 100; wherein, the traction mechanism includes a traction member 120, the guide wheel mechanism 100 includes a guide wheel assembly 130, the traction member 120 is wound around the guide wheel assembly 130, and the guide wheel assembly 130 is used to guide the rotation trajectory of the traction member 120; the guide belt rod 110 is connected to the traction member 120, the guide belt rod 110 is used to wind the material belt, and when the guide belt rod 110 moves with the traction member 120, it guides the material belt to fold back along a preset path.

[0039] In this embodiment, the traction member 120 can be a transmission rope, such as a flexible steel wire rope. The flexible steel wire rope is continuously wound around the guide wheel assembly 130 included in the guide wheel mechanism 100 to form a predetermined motion path and is driven by a motor. The guide wheel assembly 130 is composed of multiple guide wheels, which precisely guide and constrain the rotation trajectory of the traction member 120 through the wheel groove structure.

[0040] See Figure 1 and Figure 2 The guide rod 110 serves as the carrier for winding the electrode sheets. It is connected to the wire rope via a connector to form a rigid linkage. The connector includes a first connecting part 111 and a second connecting part 112, both of which are cylindrical structures. The first connecting part 111 and the second connecting part 112 are perpendicularly connected. The first connecting part 111 is axially connected to the main body of the guide rod 110, and the second connecting part is parallel to the traction member 120 and fixedly connected to the traction member 120 at a specific position.

[0041] The guide rod 110 directly bears the tension and motion guidance requirements when the electrode is folded back. It guides the folding back of the electrode with the movement of the wire rope. The material strip is wound and fixed on the outer circumference of the guide rod 110. When the external drive mechanism (e.g., motor) drives the traction member 120 to move, the guide rod 110 moves synchronously with the traction member 120. Under the guidance of the guide wheel group 130, the traction member 120 rotates along the preset trajectory, thereby pulling the guide rod 110 to drive the material strip to complete the folding back motion on the spatial path.

[0042] In this application, the traction component 120 and the guide wheel assembly 130 are arranged to form a direct power transmission path, eliminating intermediate transmission mechanisms, reducing mechanical complexity, and thus reducing machining and assembly costs. The rigid constraint of the guide wheel assembly 130 on the motion trajectory of the traction component 120 ensures that the guide rod 110 drives the material belt to stably fold back along a preset geometric path, avoiding path deviation. The flexible traction component 120, combined with the multi-wheel guide wheel assembly 130 design, can adapt to the requirements of complex paths involving bending and multi-directional turns.

[0043] See also Figure 1 In some embodiments, the guide wheel includes an outer wheel 131 and an inner wheel 132, the arrangement direction of the outer wheel 131 and the inner wheel 132 being perpendicular to the moving direction of the traction member 120; a guide groove 1311 is formed between the outer wheel 131 and the inner wheel 132 for accommodating the connector of the traction member 120, the guide groove 1311 being used to constrain the lateral offset of the traction member 120.

[0044] The guide wheel assembly 130 of this application adopts a split design, consisting of an outer wheel 131 and an inner wheel 132 arranged coaxially, with the axial alignment of the two wheels perpendicular to the moving direction of the traction member 120. A specific distance is maintained between the outer wheel 131 and the inner wheel 132, forming a continuous annular guide groove 1311. The second connecting part 112 of the connector of the traction member 120 runs embedded in this guide groove. The two side walls of the guide groove 1311 are respectively formed by the inner side wall of the outer wheel 131 and the outer side wall of the inner wheel 132. When the traction member 120 runs, its lateral displacement is restricted within the planar space formed by the two side walls. The width of the guide groove 1311 is slightly larger than the diameter of the traction member 120 and the second connecting part 112, ensuring that the traction member 120 and the second connecting part 112 can move freely in the groove while constraining their radial offset degree of freedom.

[0045] In this embodiment, the double-side wall design of the guide groove 1311 forms an orthogonal direction limit for the traction member 120, eliminating the drift of the motion trajectory caused by lateral vibration. The inner wheel 132 and the outer wheel 131 rotate independently to avoid sliding friction of the traction member 120, reducing running resistance and wear. Moreover, the outer wheel 131 and the inner wheel 132 share the radial load to prevent stress concentration on a single wheel.

[0046] In some embodiments, the inner wheel 132 can rotate independently relative to the outer wheel 131. The inner wheel 132 has a plurality of grooves 1321 circumferentially around its axis of rotation. When the guide rod 110 moves laterally X to the inner wheel 132, the first connecting part 111 of the guide rod 110 is received in the groove 1321, and the inner wheel 132 is driven to rotate by the guide rod 110.

[0047] The inner wheel 132 can be mounted on the support shaft via a precision bearing and can rotate independently relative to the outer wheel 131 and its support shaft. The independent rotation of the inner wheel 132 can reduce frictional loss, reduce maintenance frequency, and extend service life.

[0048] Multiple grooves 1321 are evenly distributed along the circumferential direction on the outer circumferential surface of the inner wheel 132. The depth of the grooves 1321 is greater than the diameter or thickness of the first connecting portion 111 of the guide rod 110. When the guide rod 110 moves laterally X with the traction member 120 to the position of the inner wheel 132, its first connecting portion 111 is inserted into the corresponding groove 1321, and the groove wall of the groove 1321 surrounds both sides of the first connecting portion 111. Under the contact action between the guide rod 110 and the groove wall of the groove 1321, the first connecting portion 111 of the guide rod 110 applies a tangential force to the inner wheel 132, driving the inner wheel 132 to rotate around the support shaft. The rotation of the inner wheel 132 is synchronized with the movement of the traction member 120, thereby realizing the dynamic coupling between the first connecting portion 111 of the guide rod 110 and the guide wheel assembly 130.

[0049] The solution of this application, in which the inner wheel 132 passively rotates to automatically match the position of the guide rod 110, can eliminate jamming caused by accumulated assembly errors and improve the fault tolerance of the mechanism. The groove 1321 wraps around the first connecting part 111 of the guide rod 110 on three sides, preventing the first connecting part 111 of the guide rod 110 from coming out of the groove 1321 of the inner wheel 132 during the folding process, thereby improving the smoother and more stable steering of the guide rod 110 at the guide wheel assembly 130.

[0050] In this embodiment, inclined guide edges 1322 are provided on both sides of the groove 1321, and the inclination angle of the guide edges 1322 is 15°-30°, forming a trumpet-shaped inlet structure. The guide edges 1322 are used to move the first connecting part 111 of the guide rod 110 along the guide edges 1322 to engage with the groove 1321 when the guide rod 110 is not aligned with the groove opening of the groove 1321, by rotating the inner wheel 132.

[0051] When the end of the guide rod 110 approaches the groove 1321, if there is an angular deviation between its axis and the center line of the groove 1321, the first connecting part 111 of the guide rod 110 will first contact the inclined surface of the guide edge 1322. As the traction member 120 continues to move, the inclined surface of the guide edge 1322 decomposes the off-center load applied by the first connecting part 111 of the guide rod 110 into radial and tangential components. The tangential component pushes the inner wheel 132 to rotate and adjust its position, while the radial component guides the first connecting part 111 of the guide rod 110 to slide along the inclined surface of the guide edge 1322. Until the center line of the groove 1321 coincides with the axis of the first connecting part 111 of the guide rod 110, the first connecting part 111 is completely embedded in the groove 1321, completing the automatic centering process, thereby realizing the dynamic coupling between the guide rod 110 and the guide wheel.

[0052] In this embodiment, the guide groove 1311 is a V-shaped arc groove. The cross-section of the guide groove 1311 has a V-shaped geometric structure, and its bottom is an arc transition surface with a V-shaped opening angle of 60°-90°. The diameter of the traction member 120 matches the radius of curvature of the arc bottom of the guide groove 1311. When the traction member 120 is inserted into the guide groove 1311, the two inclined surfaces of the V-shaped groove form a double-point contact with the outer periphery of the wire rope, and the arc surface at the bottom of the groove forms a line contact with the bottom of the rope, forming a stable three-point contact constraint, preventing the rope from slipping. Therefore, it can stabilize the travel path of the wire rope, reduce the deviation caused by external forces, and improve the reliability of the turnaround operation.

[0053] In addition, the diameter of the second connecting part 112 of the guide rod 110 matches the radius of curvature of the arc groove bottom of the guide groove 1311. When the second connecting part 112 is inserted into the guide groove 1311, the two inclined surfaces of the V-shaped groove contact the radial sides of the second connecting part 112, thereby limiting the radial sides of the second connecting part 112 and preventing the guide rod 110 from shifting along its axial direction, thus avoiding wrinkles caused by the material belt shifting axially when driving the material belt.

[0054] In some embodiments, the guide wheel assembly 130 further includes a pressure wheel 133, which is located on the opposite side of the guide wheel assembly 130. The traction member 120 is located between the pressure wheel 133 and the guide wheel assembly 130. The pressure wheel 133 is used to apply pressure to the traction member 120 toward the guide wheel assembly 130 to increase the static friction between the traction member 120 and the guide wheel assembly 130.

[0055] The pressure roller 133 is mounted on the opposite side of the guide roller assembly 130, for example, the guide roller assembly 130 is located on the lower side and the pressure roller 133 is located on the upper side, forming a gap between them for the traction member 120 to pass through. The central axis of the pressure roller 133 is parallel to the axis of the guide roller assembly 130, and its wheel surface is perpendicular to the direction of movement of the traction member 120. The traction member 120 passes through the gap between the wheel surface of the pressure roller 133 and the guide roller assembly 130. The pressure roller 133 can generate radial pressure towards the guide roller assembly 130 through a spring mechanism. This pressure presses the traction member 120 tightly into the guide groove of the guide roller assembly 130. The magnitude of the pressure can be dynamically adjusted according to the traction load to ensure that the static friction between the traction member 120 and the guide groove is always greater than the traction resistance, preventing relative slippage.

[0056] In some embodiments, the pressure roller 133 is offset from the guide roller assembly 130, or the pressure roller 133 is at a predetermined distance from the guide roller assembly 130 in the moving direction of the traction member 120. The pressure roller 133 and the guide roller assembly 130 adopt an asymmetrical arrangement, in the moving direction of the traction member 120, the axis of the pressure roller 133 is offset from the axis of the guide roller assembly 130 by a predetermined distance, and their axial center lines are parallel but not coplanar.

[0057] Before entering the guide wheel assembly 130, the traction component 120 passes through the pre-compression zone of the pressure roller 133 and bears the initial clamping force. After entering the guide wheel assembly 130, the pressure continues to act on the contact area between the traction component 120 and the guide groove. When the traction component 120 leaves the guide wheel assembly 130, the rear wheel surface of the pressure roller 133 still restrains the traction component 120. On the one hand, it forms a continuous pressure coverage throughout the entire process, thereby eliminating the risk of loosening when the traction component 120 enters and exits the guide wheel assembly 130. On the other hand, it can avoid local overload of the wire rope and reduce fatigue damage to the wire rope.

[0058] In some embodiments, the guide belt rotary device further includes a support member 134, which is fixedly connected to the guide wheel assembly 130. The pressure wheel is fixed to the support member 134 via a connecting arm 135. The support member 134 is used to fix the guide wheel assembly 130 and the pressure wheel 133 in a set position.

[0059] One side of the support member 134 can be fixed to the guide wheel assembly 130 by bolts to provide rigid support, and the other side is fixed to the guide wheel welded part on the inner side plate of the return box by bolts to ensure the overall rigidity of the automatic guide wheel rotation mechanism 100. The bolt connection allows for quick disassembly and replacement of the rotation guide wheel, reducing maintenance costs. The welded part provides rigid support to ensure the positional accuracy of the guide wheel assembly 130 under high load and the stability of long-term operation.

[0060] See Figure 3In this embodiment, the guide belt rotation device includes two parallel guide wheel mechanisms, namely upper guide wheel mechanisms 100a and 100b and lower guide wheel mechanisms 100c and 100d. Two traction members 120 are arranged laterally, namely traction member 120a on one side and traction member 120b on the other side. One traction member 120a is wound around two guide wheel groups 130 on the upper and lower layers of one side, and the other traction member 120b is wound around two guide wheel groups 130 on the upper and lower layers of the other side. The two traction members 120a and 120b move synchronously. The guide rod 110 has connectors (including a first connecting part 111 and a second connecting part 112) at both ends, and the connectors at both ends are fixedly connected to the two traction members 120a and 120b at the same position in the lateral direction.

[0061] In this embodiment, the two layers of guide wheel mechanisms are arranged parallel to each other, with the layer spacing greater than the material strip folding height. The traction member 120a on the left side is wound around the guide wheel groups of the upper and lower layers of guide wheel mechanisms 100a and 100c on the left side; the traction member 120b on the right side is wound around the guide wheel groups of the upper and lower layers of guide wheel mechanisms 100b and 100d on the right side. The two traction members 120a and 120b move synchronously in the direction of movement. The guide rod 110 is a horizontal beam structure. In its initial position, the guide rod is located on the upper layer. The material strip first wraps around the upper guide rod 110 and moves vertically downwards to the lower layer along with it through the two sets of guide wheel mechanisms. Through the guiding action of the traction members 120a and 120b on the upper and lower guide wheel mechanisms, the material strip achieves a 180° folding from the upper layer to the lower layer. The synchronous traction on both sides balances the force on the guide rod 110, preventing material strip wrinkling. The double-layer folding design in the vertical direction shortens the longitudinal length of the equipment and reduces the floor space required.

[0062] The above describes the belt rotary device of this application. Accordingly, this application also provides a coating device.

[0063] The coating equipment includes an oven body and a belt rotation device installed inside the oven. The belt rotation device adopts the structure described in the above embodiment and is fixed in the folding section chamber of the oven. After completing the coating process, the material belt enters the oven, and the belt guide rod 110 pulls the material belt to move along a preset path: the material belt enters the upper traction area from the oven inlet, is guided to the lower layer by the folding mechanism, and finally exits from the oven outlet.

[0064] The coating equipment provided in this application features a direct power transmission path formed by the traction component 120 of the guide belt rotary device and the guide wheel assembly 130, eliminating intermediate transmission mechanisms, reducing mechanical complexity, and consequently lowering machining and assembly costs. The rigid constraint of the guide wheel assembly 130 on the motion trajectory of the traction component 120 ensures that the guide rod 110 drives the material belt to stably fold back along a preset geometric path, preventing path deviation. The flexible traction component 120, combined with the multi-wheel guide wheel assembly 130 design, can adapt to complex path requirements involving bending and multi-directional turns.

[0065] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A belt retraction device characterized by, include: Guide rod, traction mechanism and guide wheel mechanism; The traction mechanism includes a traction member, the guide wheel mechanism includes a guide wheel assembly, the traction member is wound around the guide wheel assembly, and the guide wheel assembly is used to guide the rotation trajectory of the traction member; The guide rod is connected to the traction member. The guide rod is used to wind the material strip. When the guide rod moves with the traction member, it guides the material strip to fold back along a preset path.

2. The belt rotation device according to claim 1, characterized in that: The guide wheel assembly includes an outer wheel and an inner wheel, and the arrangement direction of the outer wheel and the inner wheel is perpendicular to the movement direction of the traction member; A guide groove is formed between the outer wheel and the inner wheel to accommodate the connector of the traction member, and the guide groove is used to constrain the lateral displacement of the traction member.

3. The belt-driven rotary device according to claim 2, characterized in that: The inner wheel can rotate independently relative to the outer wheel. The inner wheel has several grooves around its axis of rotation. When the guide rod moves to the inner wheel, the end of the guide rod is received in the groove, and the inner wheel is driven to rotate by the guide rod.

4. The belt rotation device according to claim 3, characterized in that: The groove has guide edges on both sides. When the guide rod is not aligned with the groove opening, the rotation of the inner wheel causes the guide rod to move along the guide edges to engage with the groove.

5. The belt-driven rotary device according to claim 2, characterized in that: The guide groove is a V-shaped circular arc groove.

6. The belt-driven rotary device according to claim 1, characterized in that: The guide wheel assembly also includes a pressure wheel, which is located on the opposite side of the guide wheel assembly. The traction member is located between the pressure wheel and the guide wheel assembly. The pressure wheel is used to apply pressure to the traction member toward the guide wheel assembly to increase the static friction between the traction member and the guide wheel assembly.

7. The belt-driven rotary device according to claim 6, characterized in that: The pressure roller is offset from the guide roller assembly; or, the pressure roller is at a preset distance from the guide roller assembly in the direction of movement of the traction member.

8. The belt-driven rotary device according to claim 1, characterized in that: The guide rod is connected to the traction member through a connector to form a rigid linkage; the connector includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are vertically connected, the first connecting part is axially connected to the guide rod body, and the second connecting part is parallel to the traction and fixedly connected to a specific position of the traction member.

9. The belt rotation device according to claim 1, characterized in that: It includes a two-layer guide wheel mechanism arranged in parallel, and two traction members are arranged in the transverse direction. The two traction members move synchronously. The two ends of the guide rod are fixedly connected to the connectors on the two traction members respectively. One of the traction members is wound around two guide wheel groups in the upper and lower layers on one transverse side, and the other traction member is wound around two guide wheel groups in the upper and lower layers on the other transverse side.

10. A coating apparatus characterized by comprising: include: Oven body; as well as A tape guide swivel according to any one of claims 1-9 for guiding a tape within an oven body along a predetermined path.

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