Roller passing mechanism, winding device and evaporation coating equipment

Abstract

The utility model discloses a roller passing mechanism, a winding device and evaporation coating equipment. The roller passing mechanism comprises a first mounting seat; the first rotating shaft is mounted on the first mounting seat; one end of the roller body is in transmission connection with the first rotating shaft; the roller passing mechanism has a first state and a second state, in the first state, the first rotating shaft can rotate relative to the first mounting base, the roller body can be fixed relative to the first rotating shaft, and the first rotating shaft can drive the roller body to rotate; and in the second state, the first rotating shaft can rotate relative to the first mounting seat, and the roller body can rotate relative to the first rotating shaft. The roller body of the roller passing mechanism can have multiple rotary connection modes, and the applicability of the roller passing mechanism can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to evaporate coating equipment technical field more specifically, relate to a kind of over roller mechanism, winding device and evaporate coating equipment. BACKGROUND

[0002] In related art, in the winding device of large width, the both ends of over roller are generally connected to mounting seat by bearing rotation, film is wound on over roller, and film can drive over roller to rotate when winding or unwinding. The rotation connection mode of current over roller is single, thereby leading to its single function.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. INVENTION CONTENTS

[0004] One object of the utility model is to provide a new technical solution of over roller mechanism.

[0005] According to the first aspect of the utility model, an over roller mechanism is provided. The over roller mechanism comprises:

[0006] a first mounting seat;

[0007] a first rotating shaft, the first rotating shaft is installed on the first mounting seat;

[0008] a roller body, one end of the roller body is drivingly connected to the first rotating shaft;

[0009] The over roller mechanism has a first state and a second state. In the first state, the first rotating shaft can rotate relative to the first mounting seat, the roller body can be fixed relative to the first rotating shaft, and the first rotating shaft can drive the roller body to rotate. In the second state, the first rotating shaft can rotate relative to the first mounting seat, and the roller body can rotate relative to the first rotating shaft.

[0010] Optionally, the over roller mechanism also has a third state. In the third state, the first rotating shaft can be fixed relative to the first mounting seat, and the roller body can rotate relative to the first rotating shaft.

[0011] Optionally, the over roller mechanism further comprises a locking assembly. In the first state, the locking assembly can lock the roller body to the first rotating shaft.

[0012] Optionally, the locking assembly comprises a locking block, the locking block can be connected to the roller body and the first rotating shaft respectively, so that the roller body can be fixed relative to the first rotating shaft.

[0013] Optionally, the locking assembly further comprises a clamping ring, the clamping ring is sleeved on the first rotating shaft, and the locking block is sleeved on the clamping ring.

[0014] Optionally, the over roller mechanism further comprises a driving member, in the first state, the driving member is drivingly connected to the first rotating shaft to drive the first rotating shaft to rotate, thereby driving the roller body to rotate.

[0015] Optionally, the over roller mechanism further comprises a second rotating shaft, one end of the roller body away from the first rotating shaft is connected to the second rotating shaft.

[0016] Optionally, the over roller mechanism further comprises a second mounting base, the second rotating shaft is mounted on the second mounting base, in the first state, the second rotating shaft can rotate relative to the second mounting base, and the roller body can rotate relative to the second rotating shaft.

[0017] According to a second aspect of the present application, an over winding device is provided. The over winding device comprises the over roller mechanism of the above-mentioned embodiments.

[0018] According to a third aspect of the present application, an evaporation coating equipment is provided. The evaporation coating equipment comprises the over winding device of the above-mentioned embodiments.

[0019] One technical effect of the present application is that the over roller mechanism has a first state and a second state, in the first state, the first rotating shaft can rotate relative to the first mounting base, the roller body can be fixed relative to the first rotating shaft, and the first rotating shaft can drive the roller body to rotate; in the second state, the first rotating shaft can rotate relative to the first mounting base, and the roller body can rotate relative to the first rotating shaft. The roller body of the over roller mechanism of the present application can have multiple rotating connection modes, so as to improve the applicability of the over roller mechanism.

[0020] Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application.

[0022] Figure 1 is a structure schematic view of a first state of the over roller mechanism of one embodiment of the present application.

[0023] Figure 2 is a sectional view of the first state of the over roller mechanism of one embodiment of the present application.

[0024] Figure 3 is a structure schematic view of a second state of the over roller mechanism of one embodiment of the present application.

[0025] Figure 4is a sectional view of the second state of the roller passing mechanism of one embodiment of the utility model.

[0026] Figure 5 is a structural schematic view of the third state of the roller passing mechanism of one embodiment of the utility model.

[0027] Figure 6 is a sectional view of the third state of the roller passing mechanism of one embodiment of the utility model.

[0028] Reference signs:

[0029] 1, first mounting seat; 2, first rotating shaft; 3, roller body; 4, locking assembly; 41, locking block; 42, holding ring; 5, pulley; 6, second rotating shaft; 7, second mounting seat; 8, bearing. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. Note that the following describes the relative arrangement, numerical expressions, and numerical values of components and steps set forth in these embodiments in detail, but unless otherwise specifically stated, the scope of the present application is not limited thereto.

[0031] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the present application and its applications or uses.

[0032] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0033] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0034] Note that similar reference numerals and letters indicate similar items, and once an item is defined in one drawing, it is not necessary to discuss it further in subsequent drawings.

[0035] According to one embodiment of the present application, a roller passing mechanism is provided. Figures 1 to 6As shown, the roller passing mechanism comprises a first mounting base 1, a first rotating shaft 2 and a roller body 3. The first rotating shaft 2 is mounted on the first mounting base 1. One end of the roller body 3 is drivingly connected to the first rotating shaft 2. The roller passing mechanism has a first state and a second state. In the first state, the first rotating shaft 2 can rotate relative to the first mounting base 1, the roller body 3 can be fixed relative to the first rotating shaft 2, and the first rotating shaft 2 can drive the roller body 3 to rotate. In the second state, the first rotating shaft 2 can rotate relative to the first mounting base 1, and the roller body 3 can rotate relative to the first rotating shaft 2.

[0036] As shown in Figure 1 and Figure 2 In this example, the roller passing mechanism is in the first state, and the first rotating shaft 2 is rotatably mounted on the first mounting base 1. One end of the roller body 3 is connected to the first rotating shaft 2 and is fixed relative to the first rotating shaft 2. The first rotating shaft 2 can drive the roller body 3 to rotate, i.e., the first rotating shaft 2 can input power. During unwinding or winding, the film is wound around the roller body 3. Since the roller body 3 can actively rotate under the drive of the first rotating shaft 2, the roller body 3 will not cause tension in the film. Before operation, the rotation speed of the first rotating shaft 2 driving the roller body 3 to rotate needs to be adjusted so that the rotation speed of the roller body 3 can match the winding speed of the unwinding or winding.

[0037] The first rotating shaft 2 and the first mounting base 1 can be rotatably connected by bearings 8. A circlip or a baffle is arranged on one end of the bearing 8 in the axial direction to fix the bearing 8. The bearings 8 can be arranged at intervals to improve the stability of the first rotating shaft 2. For example, two, three or four bearings 8 can be arranged between the first rotating shaft 2 and the first mounting base 1. The number of bearings 8 can be determined by a person skilled in the art according to the actual situation, and is not limited herein.

[0038] As shown in Figure 3 and Figure 4As shown in the example, in the second state, the first rotating shaft 2 can rotate relative to the first mounting base 1, and the roller body 3 can rotate relative to the first rotating shaft 2. The film is wound on the roller body 3. When the film is unwound or wound, the film can drive the roller body 3 to rotate relative to the first rotating shaft 2, and the roller body 3 can also drive the first rotating shaft 2 to rotate relative to the first mounting base 1, thereby increasing the flexibility of the roller body 3 and reducing the tension of the film caused by the roller body 3. The first rotating shaft 2 and the roller body 3 can be rotatably connected by a bearing 8. The first rotating shaft 2 and the first mounting base 1 can also be rotatably connected by a bearing 8. Since the bearing 8 has a certain mechanical efficiency, the first rotating shaft 2 will also rotate, thereby increasing the flexibility of the roller body 3. For example, when the bearing 8 between the roller body 3 and the first rotating shaft 2 is stuck and not found during equipment operation, the first rotating shaft 2 rotates relative to the first mounting base 1, thereby reducing the problem caused by the sticking of the roller body 3 and the first rotating shaft 2.

[0039] In the example, the roller body 3 can be made of metal such as alloy steel or stainless steel, or the roller body 3 can be made of non-metal such as ceramic or silicon carbide. The skilled person can determine the actual situation, which is not limited here.

[0040] In the example, the roller body 3 can have a hollow cylindrical structure. The hollow structure of the roller body 3 is beneficial to reduce the weight, thereby reducing the moment of inertia.

[0041] In one example, as shown in Figure 5 and Figure 6 The roller passing mechanism also has a third state. In the third state, the first rotating shaft 2 can be fixed relative to the first mounting base 1, and the roller body 3 can rotate relative to the first rotating shaft 2.

[0042] As shown in Figure 5 and Figure 6 In the example, in the third state of the roller passing mechanism, the first rotating shaft 2 can be fixed relative to the first mounting base 1, and the roller body 3 can rotate relative to the first rotating shaft 2, thereby facilitating the shortening of the period of debugging verification caused by the abnormality of the roller body 3. That is, during the debugging of the roller passing mechanism, the first rotating shaft 2 can be fixed relative to the first mounting base 1, and the roller body 3 can rotate relative to the first rotating shaft 2. By rotating the roller body 3, it can be determined whether there is a sticking between the roller body 3 and the first rotating shaft 2.

[0043] In one example, as shown in Figure 1 and Figure 2 The roller passing mechanism also includes a locking assembly 4. In the first state, the locking assembly 4 can lock the roller body 3 to the first rotating shaft 2.

[0044] As shown in Figure 1 and Figure 2As shown, in this example, in the first state, the locking assembly 4 is connected to the roller body 3 and the first rotating shaft 2 respectively, and can lock the roller body 3 and the first rotating shaft 2 so that the roller body 3 can be fixed to the first rotating shaft 2. The first rotating shaft 2 is fixed relative to the first mounting base 1, so that the roller body 3 can be smoothly driven to rotate.

[0045] like Figure 3 and Figure 4 As shown, in this example, the locking assembly 4 in the first state can be removed to allow the first rotating shaft 2 to rotate relative to the roller body 3, thereby forming the second state of the roller mechanism. Furthermore, removing the locking assembly 4 can also reduce the overall weight of the roller body 3 and the first rotating shaft 2, thereby reducing the rotational inertia of the roller body 3, which is beneficial to further reduce the tension on the film caused by the roller body 3.

[0046] Alternatively, the locking assembly 4 can be configured as an adjustable structure. That is, by adjusting the locking assembly 4, it can lock the first rotating shaft 2 and the roller body 3, thereby placing the roller-passing mechanism in a first state. Alternatively, by adjusting the locking assembly 4, the first rotating shaft 2 and the roller body 3 can be released, placing the roller-passing mechanism in a second state. By making the locking assembly 4 an adjustable structure, the assembly steps of the roller-passing mechanism are simplified.

[0047] like Figure 5 and Figure 6 As shown, in this example, the locking component 4 in the first state can be removed and installed on the first rotating shaft 2 and the first mounting base 1. This allows the first rotating shaft 2 to rotate relative to the roller body 3, while the first rotating shaft 2 is fixed relative to the first mounting base 1, thereby forming the third state of the roller mechanism.

[0048] In one example, such as Figure 2 As shown, the locking assembly 4 includes a locking block 41, which can be connected to the roller body 3 and the first rotating shaft 2 respectively, so that the roller body 3 can be fixed relative to the first rotating shaft 2.

[0049] like Figure 2 As shown, in this example, by fixing the locking block 41 to the outer periphery of the first rotating shaft 2 and then fixing the locking block 41 to the roller body 3, the first rotating shaft 2 and the roller body 3 can be locked together, keeping them in a relatively fixed state. For example, the locking block 41 can be fixedly fitted to the first rotating shaft 2 and then screwed to one end of the roller body 3 by fasteners such as screws or bolts, thereby locking the first rotating shaft 2 and the roller body 3. Of course, the specific structure of the locking block 41 can be determined by those skilled in the art according to the actual situation, and is not specifically limited here.

[0050] In one example, such as Figure 2As shown, the locking assembly 4 further comprises a clamping ring 42, the clamping ring 42 is sleeved on the first rotating shaft 2, and the locking block 41 is sleeved on the clamping ring 42.

[0051] As shown in the example, the clamping ring 42 is fixedly sleeved on the outer periphery of the first rotating shaft 2, and the locking block 41 is fixedly sleeved on the outer periphery of the clamping ring 42, so that the locking block 41 can avoid crushing or scratching the first rotating shaft 2, and the clamping ring 42 can improve the friction between the locking block 41 and the first rotating shaft 2, so that the first rotating shaft 2 and the roller body 3 can be locked more stably. Figure 2

[0052] Wherein, the clamping ring 42 can be nylon or polytetrafluoroethylene material, or can also be stainless steel or other metal materials, which can be determined by the actual situation, and is not limited here.

[0053] In one example, the roller mechanism further comprises a driving member, and in the first state, the driving member is drivingly connected to the first rotating shaft 2 to drive the first rotating shaft 2 to rotate, thereby driving the roller body 3 to rotate.

[0054] As shown in the example, one end of the first rotating shaft 2 is sleeved with a pulley 5, and a transmission belt can be sleeved on the pulley 5, and the driving member can drive the pulley 5 to rotate through the transmission belt, thereby driving the first rotating shaft 2 to rotate. Wherein, the driving member can be a motor, such as a stepping motor or other driving structure, which can be determined by the actual situation, and is not limited here. Figure 1 Figure 2 In this example, the output shaft of the driving member can also be directly drivingly connected to the end of the first rotating shaft 2 away from the roller body 3, thereby driving the first rotating shaft 2 to rotate. Of course, the specific arrangement of the driving member can be determined by the actual situation, and is not limited here.

[0055] In this example, in the second state of the roller mechanism, the pulley 5 can be removed, thereby reducing the overall weight of the roller body 3 and the first rotating shaft 2, reducing the moment of inertia of the roller body 3, thereby facilitating further reducing the tension of the film caused by the roller body 3.

[0056] In one example, as shown in the example, the roller mechanism further comprises a second rotating shaft 6, and one end of the roller body 3 away from the first rotating shaft 2 is connected to the second rotating shaft 6.

[0057] As shown in the example, the roller mechanism further comprises a second rotating shaft 6, and one end of the roller body 3 away from the first rotating shaft 2 is connected to the second rotating shaft 6. Figure 1 Figure 2 As shown in the example, the roller mechanism further comprises a second rotating shaft 6, and one end of the roller body 3 away from the first rotating shaft 2 is connected to the second rotating shaft 6.

[0058] As shown in the example, the roller mechanism further comprises a second rotating shaft 6, and one end of the roller body 3 away from the first rotating shaft 2 is connected to the second rotating shaft 6. Figure 1 Figure 2 ​​​​As shown, in this example, one end of the roller 3 is connected to the first rotating shaft 2 along the axial direction, and the other end is connected to the second rotating shaft 6. The first rotating shaft 2 and the second rotating shaft 6 can support the roller 3. The roller 3 and the second rotating shaft 6 can be connected by a bearing 8, and the roller 3 can rotate relative to the second rotating shaft 6.

[0059] In one example, such as Figure 1 and Figure 2 As shown, the roller mechanism also includes a second mounting base 7, and the second rotating shaft 6 is mounted on the second mounting base 7. In the first state, the second rotating shaft 6 can rotate relative to the second mounting base 7, and the roller body 3 can rotate relative to the second rotating shaft 6.

[0060] like Figure 1 and Figure 2 As shown, in this example, in the first state, the second rotating shaft 6 can rotate relative to the second mounting base 7, and the roller 3 can rotate relative to the second rotating shaft 6, increasing the flexibility of the roller 3, thereby enabling the first rotating shaft 2 to drive the roller 3 to rotate more smoothly. The second rotating shaft 6 and the second mounting base 7 can be rotatably connected by bearings 8. Multiple bearings 8 can be spaced apart to improve the stability of the second rotating shaft 6. For example, two, three, or four bearings 8 can be provided between the second rotating shaft 6 and the second mounting base 7. Those skilled in the art can determine the arrangement based on the actual situation, and no specific limitation is made here.

[0061] like Figure 3 and Figure 4 As shown, in the second state, the second rotating shaft 6 can rotate relative to the second mounting base 7, and the roller body 3 can rotate relative to the second rotating shaft 6, thereby further increasing the flexibility of the roller body 3, which is conducive to further reducing the tension of the film caused by the roller body 3.

[0062] like Figure 5 and Figure 6 As shown, in this example, in the third state, a locking assembly 4 is provided between the first rotating shaft 2 and the first mounting base 1, and a locking assembly 4 is also provided between the second rotating shaft 6 and the second mounting base 7. This allows the first rotating shaft 2 to rotate relative to the roller body 3, while the first rotating shaft 2 is fixed relative to the first mounting base 1. At the same time, the second rotating shaft 6 can rotate relative to the roller body 3, while the second rotating shaft 6 is fixed relative to the first mounting base 1.

[0063] According to another embodiment of the present application, a winding device is also provided. The winding device comprises the over roller mechanism of the above embodiments. The over roller mechanism comprises the first mounting base 1, the first rotating shaft 2 and the roller body 3. The first rotating shaft 2 is mounted on the first mounting base 1. One end of the roller body 3 is drivingly connected to the first rotating shaft 2. The over roller mechanism has a first state and a second state. In the first state, the first rotating shaft 2 can rotate relative to the first mounting base 1, the roller body 3 can be fixed relative to the first rotating shaft 2, and the first rotating shaft 2 can drive the roller body 3 to rotate. In the second state, the first rotating shaft 2 can rotate relative to the first mounting base 1, and the roller body 3 can rotate relative to the first rotating shaft 2. The roller body 3 of the over roller mechanism can have multiple rotating connection modes to improve the applicability of the over roller mechanism.

[0064] In this example, the winding device further comprises a winding-off roller and a winding-up roller. One or more over roller mechanisms can be arranged between the winding-up roller and the winding-off roller to adapt to different assembly environments. For example, two, three or four over roller mechanisms can be arranged between the winding-up roller and the winding-off roller, which can be determined by those skilled in the art according to actual conditions, and will not be specifically limited here.

[0065] According to another embodiment of the present application, an evaporation coating device is also provided, which comprises the winding device of the above embodiments.

[0066] In this example, the evaporation coating device comprises a cavity and a cover plate. The winding device is mounted on one side of the cover plate, and an evaporation boat is arranged in the cavity. The cover plate can drive the winding device to enter the cavity, and the cover plate can seal the open end of the cavity. The film is wound on the winding-up roller, the winding-off roller and the roller body 3 of the over roller mechanism, and the surface of the film can be coated in the cavity.

[0067] In the above embodiments, the focus is on the differences between the embodiments, and the different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory. Considering the brevity of the writing, it will not be repeated here.

[0068] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A roll-over mechanism, characterized by, The over roller mechanism comprises: a first mounting base; a first rotating shaft mounted on the first mounting base; a roller body having one end drivingly connected to the first rotating shaft; the over roller mechanism has a first state and a second state, in the first state, the first rotating shaft is capable of rotating relative to the first mounting base, the roller body is capable of being fixed relative to the first rotating shaft, and the first rotating shaft is capable of driving the roller body to rotate; in the second state, the first rotating shaft is capable of rotating relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft.

2. The roll-over mechanism of claim 1, wherein, The over roller mechanism further has a third state, in the third state, the first rotating shaft is capable of being fixed relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft.

3. The roll-over mechanism of claim 1, wherein, The over roller mechanism further comprises a locking assembly, in the first state, the locking assembly is capable of locking the roller body relative to the first rotating shaft.

4. The roll-over mechanism of claim 3, wherein, The locking assembly comprises a locking block capable of being connected to the roller body and the first rotating shaft respectively, so that the roller body is capable of being fixed relative to the first rotating shaft.

5. The roll-over mechanism of claim 4, wherein, The locking assembly further comprises a clamping ring sleeved on the first rotating shaft, and the locking block is sleeved on the clamping ring.

6. The roll over mechanism of claim 1, wherein, The over roller mechanism further comprises a driving member drivingly connected to the first rotating shaft in the first state, so as to drive the first rotating shaft to rotate, thereby driving the roller body to rotate.

7. The roll over mechanism of claim 1, wherein, The over roller mechanism further comprises a second rotating shaft, one end of the roller body away from the first rotating shaft is connected to the second rotating shaft.

8. The roll over mechanism of claim 7, wherein, The over roller mechanism further comprises a second mounting base, the second rotating shaft is mounted on the second mounting base, in the first state, the second rotating shaft is capable of rotating relative to the second mounting base, and the roller body is capable of rotating relative to the second rotating shaft.

9. A winding device, characterized by The over roller mechanism comprises:

10. An evaporation coating apparatus, characterized by a first mounting base; a first rotating shaft mounted on the first mounting base; a roller body having one end drivingly connected to the first rotating shaft; the over roller mechanism has a first state and a second state, in the first state, the first rotating shaft is capable of rotating relative to the first mounting base, the roller body is capable of being fixed relative to the first rotating shaft, and the first rotating shaft is capable of driving the roller body to rotate; in the second state, the first rotating shaft is capable of rotating relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft. The over roller mechanism further has a third state, in the third state, the first rotating shaft is capable of being fixed relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft. The over roller mechanism further comprises a locking assembly, in the first state, the locking assembly is capable of locking the roller body relative to the first rotating shaft. The locking assembly comprises a locking block capable of being connected to the roller body and the first rotating shaft respectively, so that the roller body is capable of being fixed relative to the first rotating shaft. The locking assembly further comprises a clamping ring sleeved on the first rotating shaft, and the locking block is sleeved on the clamping ring. The over roller mechanism further comprises a driving member drivingly connected to the first rotating shaft in the first state, so as to drive the first rotating shaft to rotate, thereby driving the roller body to rotate. The over roller mechanism further comprises a second rotating shaft, one end of the roller body away from the first rotating shaft is connected to the second rotating shaft. The over roller mechanism further comprises a second mounting base, the second rotating shaft is mounted on the second mounting base, in the first state, the second rotating shaft is capable of rotating relative to the second mounting base, and the roller body is capable of rotating relative to the second rotating shaft. The over roller mechanism comprises: a first mounting base; a first rotating shaft mounted on the first mounting base; a roller body having one end drivingly connected to the first rotating shaft; the over roller mechanism has a first state and a second state, in the first state, the first rotating shaft is capable of rotating relative to the first mounting base, the roller body is capable of being fixed relative to the first rotating shaft, and the first rotating shaft is capable of driving the roller body to rotate; in the second state, the first rotating shaft is capable of rotating relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft. The over roller mechanism further has a third state, in the third state, the first rotating shaft is capable of being fixed relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft. The over roller mechanism further comprises a locking assembly, in the first state, the locking assembly is capable of locking the roller body relative to the first rotating shaft. The locking assembly comprises a locking block capable of being connected to the roller body and the first rotating shaft respectively, so that the roller body is capable of being fixed relative to the first rotating shaft. The locking assembly further comprises a clamping ring sleeved on the first rotating shaft, and the locking block is sleeved on the clamping ring. The over roller mechanism further comprises a driving member drivingly connected to the first rotating shaft in the first state, so as to drive the first rotating shaft to rotate, thereby driving the roller body to rotate. The over roller mechanism further comprises a second rotating shaft, one end of the roller body away from the first rotating shaft is connected to the second rotating shaft. The over roller mechanism further comprises a second mounting base, the second rotating shaft is mounted on the second mounting base, in the first state, the second rotating shaft is capable of rotating relative to the second mounting base, and the roller body is capable of rotating relative to the second rotating shaft. The over roller mechanism comprises: a first mounting base; a first rotating shaft mounted on the first mounting base; a roller body having one end drivingly connected to the first rotating shaft; the over roller mechanism has a first state and a second state, in the first state, the first rotating shaft is capable of rotating relative to the first mounting base, the roller body is capable of being fixed relative to the first rotating shaft, and the first rotating shaft is capable of driving the roller body to rotate; in the second state, the first rotating shaft is capable of rotating relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft. The over roller mechanism further has a third state, in the third state, the first rotating shaft is capable of being fixed relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft. The over roller mechanism further comprises a locking assembly, in the first state, the locking assembly is capable of locking the roller body relative to the first rotating shaft. The locking assembly comprises a locking block capable of being connected to the roller body and the first rotating shaft respectively, so that the roller body is capable of being fixed relative to the first rotating shaft. The locking assembly further comprises a clamping ring sleeved on the first rotating shaft, and the locking block is sleeved on the clamping ring. The over roller mechanism further comprises a driving member drivingly connected to the first rotating shaft in the first state, so as to drive the first rotating shaft to rotate, thereby driving the roller body to rotate. The over roller mechanism further comprises a second rotating shaft, one end of the roller body away from the first rotating shaft is connected to the second rotating shaft. The over roller mechanism further comprises a second mounting base, the second rotating shaft is mounted on the second mounting base, in the first state, the second rotating shaft is capable of rotating relative to the second mounting base, and the roller body is capable of rotating relative to the second rotating shaft. The over roller mechanism comprises: a first mounting base; a first rotating shaft mounted on the first mounting base; a roller body having one end drivingly connected to the first rotating shaft; the over roller mechanism has a first state and a second state, in the first state, the first rotating shaft is capable of rotating relative to the first mounting base, the roller body is capable of being fixed relative to the first rotating shaft, and the first rotating shaft is capable of driving the roller body to rotate; in the second state, the first rotating shaft is capable of rotating relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft. The over roller mechanism further has a third state, in the third state, the first rotating shaft is capable of being fixed relative to the first mounting base, and the roller body is capable of rotating relative to the first rotating shaft. The over roller mechanism further comprises a locking assembly, in the first state, the locking assembly is capable of locking the roller body relative to the first rotating shaft. The locking assembly comprises a locking block capable of being connected to the roller body and the first rotating shaft respectively, so that the roller body is capable of being fixed relative to the first rotating shaft. The locking assembly further comprises a clamping ring sleeved on the first rotating shaft, and the locking block is sleeved on the clamping ring. The over roller mechanism further comprises a driving member drivingly connected to the first rotating shaft in the first state, so as to drive the first rotating shaft to rotate, thereby driving the roller body to rotate. The over roller mechanism further comprises a second rotating shaft, one end of the roller body away from the first rotating shaft is connected to the second rotating shaft. The over roller mechanism further comprises a second mounting base, the second rotating shaft is mounted on the second mounting base, in the first state, the second rotating shaft is capable of rotating relative to the second mounting base, and the roller

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