Winding and unwinding device

Abstract

The utility model relates to a winding and unwinding device. The take-up and pay-off device comprises a loading shaft used for loading a charging barrel, and the loading shaft is a hollow shaft; the first moving part is mounted on the outer side of the loading shaft; the second moving part is arranged in the inner cavity of the loading shaft and can be controlled to move in the axial direction of the loading shaft; and one of the first moving part and the second moving part can generate magnetic attraction force on the other one, so that the first moving part can push the charging barrel in the axial direction of the charging shaft along with the second moving part under the action of the magnetic attraction force. Thus, the magnetic attraction force generated between the first moving part and the second moving part is utilized, the first moving part moves along with the second moving part to achieve material pushing, the needed occupied space is greatly reduced, the structure is simple, and the equipment cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to a winding and unwinding device. Background Art

[0002] In the lithium battery manufacturing process, a reel is often needed to unwind or rewind the material tape, such as the unwinding and rewinding of electrode tape, diaphragm tape or tape. Since the weight of the material roll is generally above 15KG, unloading by hand not only has a high risk of safety accidents, but also increases the labor intensity of the workers. In order to reduce labor intensity and reduce the risk of safety accidents, the reel needs to use an external unloading mechanism to push the material roll on the reel to unload, thereby realizing automatic or semi-automatic unloading. However, the external unloading mechanism of the reel has the disadvantages of occupying a large space and high cost. Utility Model Content

[0003] Based on this, it is necessary to provide a rewinding and unwinding device that improves the above defects, in view of the fact that the rewinding and unwinding device in the prior art uses an external unloading mechanism for automatic or semi-automatic unloading, and the external unloading mechanism has the problems of occupying a large space and high cost.

[0004] A winding and unwinding device, comprising:

[0005] A loading shaft, used for loading the barrel, and the loading shaft is a hollow shaft;

[0006] A first moving member is mounted outside the loading shaft; and

[0007] A second moving member is disposed in the inner cavity of the charging shaft and can be controlled to move along the axial direction of the charging shaft;

[0008] Wherein, one of the first moving member and the second moving member can generate a magnetic attraction force on the other, so that the first moving member can follow the second moving member to push the barrel along the axial direction of the loading axis under the action of the magnetic attraction force.

[0009] In one embodiment, the reeling and unreeling device further includes a first driving assembly, and the first driving assembly includes a screw rod and a first driving member;

[0010] The screw rod is arranged in the loading shaft, and the axial direction of the screw rod is parallel to the axial direction of the loading shaft. The driving end of the first driving member is connected to the screw rod to drive the screw rod to rotate relative to the loading shaft. The second moving member is threadedly connected to the screw rod.

[0011] In one embodiment, the first drive assembly further includes a transmission mechanism, and the transmission mechanism is connected between the output shaft of the first drive member and the screw rod.

[0012] In one embodiment, the transmission mechanism includes a driving gear and a driven gear, the driving gear is mounted on the output shaft of the first driving member, the driven gear is mounted on the screw rod, and the driving gear is meshed with the driven gear.

[0013] In one of the embodiments, the rewinding and unwinding device further includes a second driving assembly, and a driving end of the second driving assembly is connected to the loading shaft to drive the loading shaft to rotate.

[0014] In one embodiment, the loading shaft is an air expansion shaft or a slip shaft.

[0015] In one embodiment, the first moving member is an electromagnetic generating member for generating the magnetic attraction force on the second moving member.

[0016] In one embodiment, the second moving member is an electromagnetic generating member for generating the magnetic attraction force on the first moving member.

[0017] In one embodiment, the inner wall of the loading shaft is provided with a strip-shaped input electrode extending longitudinally along the axial direction of the loading shaft, and the strip-shaped input electrode is used to be electrically connected to an external power supply; the second moving member has a contact electrode, and the contact electrode is in conductive contact with the strip-shaped input electrode.

[0018] In one embodiment, the inner wall of the charging shaft is provided with a strip groove extending longitudinally along the axial direction of the charging shaft, the strip input electrode is arranged in the strip groove, and the contact electrode extends into the strip groove and is in conductive contact with the strip input electrode.

[0019] In actual use, when unloading is required, the above-mentioned winding and unwinding device is firstly controlled to generate a magnetic attraction force on the second moving member, or the second moving member is controlled to generate a magnetic attraction force on the first moving member, so that the first moving member and the second moving member are adsorbed into a whole with each other under the action of the magnetic attraction force; then, the second moving member is controlled to move axially along the loading shaft, so that the first moving member moves along the axial direction of the loading shaft with the second moving member, until the first moving member pushes the barrel on the loading shaft axially away from the loading shaft, thereby realizing unloading.

[0020] In this way, compared with the solution of using an external unloading mechanism for unloading in the prior art, the present application uses the magnetic attraction force generated between the first moving part and the second moving part, so that the first moving part follows the movement of the second moving part to achieve pushing, which greatly reduces the required space, and has a simple structure, greatly reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a winding and unwinding device in one embodiment of the utility model;

[0022] Figure 2 This is a structural schematic diagram of a winding and unwinding device in another embodiment of the utility model;

[0023] Figure 3 for Figure 2 The cross-sectional structure diagram of the rewinding and unwinding device at the loading shaft is shown. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0030] See also Figure 1 In one embodiment of the utility model, a winding and unwinding device is provided, comprising a loading shaft 10, a first moving member 20 and a second moving member 30. The loading shaft 10 is used to load a barrel A and wind up the material strip on the barrel A, that is, the loading shaft 10 is a winding shaft. Of course, in other embodiments, the loading shaft 10 can also be an unwinding shaft, which is used to unwind and output the material strip on the barrel A. In other words, the winding and unwinding device can be a winding device or an unwinding device, and of course, it can also be a winding and unwinding integrated device.

[0031] The first moving member 20 is installed on the outside of the charging shaft 10 and is movable along the axial direction of the charging shaft 10. The second moving member 30 is arranged in the inner cavity of the charging shaft 10 and can be controlled to move along the axial direction of the charging shaft 10. One of the first moving member 20 and the second moving member 30 can generate a magnetic attraction force on the other, so that the first moving member 20 can move along the axial direction of the charging shaft 10 with the second moving member 30 under the action of the magnetic attraction force, thereby pushing the barrel A away from the charging shaft 10 along the axial direction of the charging shaft 10, that is, realizing unloading. Specifically, the first moving member 20 is annular, and the annular first moving member 20 is sleeved on the outside of the charging shaft 10, and the first moving member 20 can move along the axial direction of the charging shaft 10, but cannot rotate relative to the charging shaft 10.

[0032] In actual use, when unloading is required in the above-mentioned winding and unwinding device, first, the first movable member 20 is controlled to generate a magnetic attraction force on the second movable member 30, or the second movable member 30 is controlled to generate a magnetic attraction force on the first movable member 20, so that the first movable member 20 and the second movable member 30 are adsorbed to each other as a whole under the action of the magnetic attraction force; then, the second movable member 30 is controlled to move axially along the loading shaft 10, so that the first movable member 20 moves along the axial direction of the loading shaft 10 with the second movable member 30, until the first movable member 20 pushes the barrel A on the loading shaft 10 axially away from the loading shaft 10, thereby realizing unloading.

[0033] In this way, compared with the solution of using an external unloading mechanism for unloading in the prior art, the present application uses the magnetic attraction force generated between the first movable member 20 and the second movable member 30, so that the first movable member 20 follows the movement of the second movable member 30 to achieve pushing, which greatly reduces the required space, and has a simple structure, which greatly reduces the equipment cost.

[0034] In an embodiment of the present application, the reeling and unwinding device further comprises a first drive assembly (not shown), which comprises a screw rod 41 and a first drive member 42. The screw rod 41 is disposed in the loading shaft 10, and the axial direction of the screw rod 41 is parallel to the axial direction of the loading shaft 10. Preferably, the screw rod 41 is coaxially disposed with the loading shaft 10. The driving end of the first drive member 42 is connected to the screw rod 41 to drive the screw rod 41 to rotate relative to the loading shaft 10. The second moving member 30 is threadedly connected to the screw rod 41, so that when the screw rod 41 rotates, the second moving member 30 can be driven to move along the axial direction of the screw rod 41. In this way, when a magnetic attraction force is generated between the first movable member 20 and the second movable member 30 and they are adsorbed into each other as a whole, the first driving member 42 drives the screw rod 41 to rotate relative to the loading shaft 10, so that the second movable member 30 moves along the axis of the screw rod 41, so that the first movable member 20 follows the second movable member 30 to move along the axial direction of the loading shaft 10 until the first movable member 20 pushes the barrel A on the loading shaft 10 away from the loading shaft 10.

[0035] Optionally, both ends of the screw rod 41 are installed in the loading shaft 10 through bearings, so that the screw rod 41 can rotate relative to the loading shaft 10.

[0036] Specifically in the embodiment, the first drive assembly further includes a transmission mechanism (not shown), which is connected between the output shaft of the first drive member 42 and the screw rod 41 to transmit the rotational motion output by the first drive member 42 to the screw rod 41, thereby driving the screw rod 41 to rotate. Optionally, the first drive member 42 may be a motor.

[0037] Optionally, the transmission mechanism includes a driving gear (not shown) and a driven gear 43. The driving gear is mounted on the output shaft of the first driving member 42, so that the first driving member 42 can drive the driving gear to rotate. The driven gear 43 is mounted on the screw rod 41, so that the driven gear 43 rotates synchronously with the screw rod 41. The driving gear is meshed with the driven gear 43, so that when the first driving member 42 drives the driving gear to rotate, it can drive the driven gear 43 and the screw rod 41 to rotate synchronously. It should be noted that the transmission mechanism is not limited to the gear transmission structure. In other embodiments, the transmission mechanism may also adopt a belt transmission structure or a chain transmission structure, which is not limited here.

[0038] Specifically in the embodiment, the reeling and unreeling device further comprises a base 50, one end of the loading shaft 10 is mounted on the base 50, and the other end extends longitudinally in the horizontal direction. The first driving member 42 is mounted on the base 50, the driving gear is mounted on the output shaft of the first driving member 42, and the driven gear 43 is mounted on one end of the screw rod 41 facing the base 50, and the driving gear and the driven gear 43 are meshed with each other.

[0039] Specifically in the embodiment, the unwinding and rewinding device also includes a second drive assembly (not shown) mounted on the base 50, and the drive end of the second drive assembly is connected to the loading shaft 10 to drive the loading shaft 10 to rotate. In this way, when the second drive assembly drives the loading shaft 10 to rotate, the loading shaft 10 drives the barrel A thereon to rotate, thereby realizing the winding of the material strip onto the barrel A or the unwinding and outputting of the material strip on the barrel A. It should be noted that the second drive assembly can adopt a rotary drive structure such as a motor, as long as it can drive the loading shaft 10 to unwind or rewind, and is not limited here. Optionally, the loading shaft 10 can adopt an air expansion shaft or a slip shaft.

[0040] In some embodiments, the first moving member 20 is an electromagnetic generating member, which is used to generate magnetic attraction to the second moving member 30, so that the first moving member 20 and the second moving member 30 are attracted to each other as a whole, and then the first moving member 20 can move along the axial direction of the loading shaft 10 with the second moving member 30. It should be noted that the electromagnetic generating member can be an electromagnet device, which generates magnetic attraction to the second moving member 30 when powered on, and the magnetic attraction disappears when powered off.

[0041] Optionally, the reeling and unwinding device further comprises a rotary joint (not shown), and the first moving member 20 has a contact electrode. The rotary joint is mounted on the base 50 and is coaxial with the charging shaft 10. The contact electrode of the first moving member 20 is connected to the rotary joint through a wire, and the rotary joint is connected to an external power source through a wire, so that the first moving member 20 is electrically connected to the external power source through the rotary joint, and the wire is ensured not to be wound around the charging shaft 10 when the first moving member 20 rotates following the charging shaft 10. It is understandable that the number of the contact electrodes is two, one of which is a positive electrode and the other is a negative electrode. The two contact electrodes are both electrically connected to the positive and negative poles of the external power source through the rotary joint.

[0042] Please note that, see Figure 1 As shown, in actual use, when winding or unwinding is required, the first drive assembly does not drive the screw rod 41 to rotate, and the second drive assembly drives the loading shaft 10 to rotate, so that the screw rod 41 and the second moving member 30 on the screw rod 41 do not rotate, and the loading shaft 10 drives the first moving member 20 and the barrel A thereon to rotate, thereby unwinding the material tape on the barrel A or winding the material tape onto the barrel A. When unloading is required, the second drive assembly does not drive the loading shaft 10 to rotate, the first drive assembly drives the screw rod 41 to rotate, and the first moving member 20 is energized to generate a magnetic attraction force on the second moving member 30. At this time, the screw rod 41 rotates to drive the second movable member 30 to move axially along the loading shaft 10, and the first movable member 20 moves along the axial direction of the loading shaft 10 along with the second movable member 30, thereby pushing the barrel A on the loading shaft 10 to move axially along the loading shaft 10 until the first movable member 20 pushes the barrel A away from the loading shaft 10 from the end of the loading shaft 10 that is away from the base 50, thereby realizing unloading.

[0043] It should also be noted that the first moving member 20 is not limited to being an electromagnetic generating member. Figure 2 and Figure 3 In other embodiments, the second moving member 30 is an electromagnetic generating member, which is used to generate magnetic attraction to the first moving member 20, so that the first moving member 20 and the second moving member 30 are attracted to each other as a whole, and then the first moving member 20 can move along the axial direction of the loading shaft 10 with the second moving member 30. It should be noted that the electromagnetic generating member can be an electromagnet device, which generates magnetic attraction to the first moving member 20 when powered on, and the magnetic attraction disappears when powered off.

[0044] Further, the inner wall of the charging shaft 10 is provided with a strip input electrode (not shown) extending in the axial direction of the charging shaft 10, and the strip input electrode is used to be electrically connected to an external power supply. The second moving member 30 has a contact electrode 31, and the contact electrode 31 is in conductive contact with the strip input electrode. It can be understood that the number of the contact electrodes 31 is two, one of which is a positive electrode and the other is a negative electrode. Correspondingly, there are also two strip input electrodes, and the two strip input electrodes are in conductive contact with the two contact electrodes 31 one by one. The two contact electrodes 31 are electrically connected to the positive and negative poles of the external power supply, respectively.

[0045] Furthermore, the inner wall of the loading shaft 10 is provided with a strip groove 11 extending longitudinally along the axial direction of the loading shaft 10. The strip input electrode is arranged in the strip groove 11. The contact electrode 31 of the second moving member 30 extends into the strip groove 11 and is in conductive contact with the strip input electrode. In this way, the contact electrode 31 of the second moving member 30 is electrically connected to the external power supply through the strip input electrode in the strip groove 11, so that the second moving member 30 generates a magnetic attraction force on the first moving member 20 under the action of the electric energy provided by the external power supply.

[0046] It should be noted that, in order to avoid the relative rotation between the second moving member 30 and the loading shaft 10, which causes the contact electrode 31 to separate from the strip input electrode, while the second driving component drives the loading shaft 10 to rotate, the first driving component also drives the screw 41 to rotate synchronously. In this way, under the simultaneous drive of the second driving component and the first driving component, the loading shaft 10, the first moving member 20, the screw 41 and the second moving member 30 rotate synchronously while remaining relatively still to each other, so that the loading shaft 10 drives the barrel A thereon to reel or unreel, and avoids the relative rotation between the second moving member 30 and the loading shaft 10, thereby avoiding the contact electrode 31 from leaving the strip groove 11 and separating from the strip input electrode.

[0047] Please note that, see Figure 2 and Figure 3As shown, in actual use, when winding or unwinding is required, the first drive assembly drives the screw 41 to rotate, and the second drive assembly drives the loading shaft 10 to rotate, so that the screw 41, the second moving member 30 on the screw 41, the loading shaft 10, and the first moving member 20 on the loading shaft 10 and the barrel A rotate synchronously, so that the material tape on the barrel A is unwound or wound onto the barrel A, that is, winding or unwinding is achieved. When unloading is required, the second drive assembly does not drive the loading shaft 10 to rotate, the first drive assembly drives the screw 41 to rotate, and the second moving member 30 is energized to generate a magnetic attraction to the first moving member 20. At this time, the screw rod 41 rotates to drive the second movable member 30 to move axially along the loading shaft 10, and the first movable member 20 moves along the axial direction of the loading shaft 10 along with the second movable member 30, thereby pushing the barrel A on the loading shaft 10 to move axially along the loading shaft 10 until the first movable member 20 pushes the barrel A away from the loading shaft 10 from the end of the loading shaft 10 that is away from the base 50, thereby realizing unloading.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A reeling and unreeling device, characterized in that: include: A loading shaft, used for loading the barrel, and the loading shaft is a hollow shaft; A first moving member is mounted on the outside of the loading shaft; and A second moving member is disposed in the inner cavity of the charging shaft and can be controlled to move along the axial direction of the charging shaft; One of the first moving member and the second moving member can generate a magnetic attraction force on the other, so that the first moving member can follow the second moving member to push the barrel along the axial direction of the loading shaft under the action of the magnetic attraction force.

2. The reeling and unreeling device according to claim 1, characterized in that: The reeling and unreeling device further comprises a first driving assembly, wherein the first driving assembly comprises a screw rod and a first driving member; The screw rod is arranged in the loading shaft, and the axial direction of the screw rod is parallel to the axial direction of the loading shaft. The driving end of the first driving member is connected to the screw rod to drive the screw rod to rotate relative to the loading shaft. The second moving member is threadedly connected to the screw rod.

3. The reeling and unreeling device according to claim 2, characterized in that: The first driving assembly further includes a transmission mechanism connected between the output shaft of the first driving member and the lead screw.

4. The reeling and unreeling device according to claim 3, characterized in that: The transmission mechanism comprises a driving gear and a driven gear, wherein the driving gear is mounted on the output shaft of the first driving member, and the driven gear is mounted on the screw rod, and the driving gear is meshed with the driven gear.

5. The reeling and unreeling device according to claim 1, characterized in that: The rewinding and unwinding device also includes a second driving assembly, a driving end of which is connected to the loading shaft to drive the loading shaft to rotate.

6. The reeling and unreeling device according to claim 1, characterized in that: The charging shaft is an air expansion shaft or a slip shaft.

7. The reeling and unreeling device according to any one of claims 1 to 6, characterized in that: The first moving member is an electromagnetic generating member for generating the magnetic attraction force on the second moving member.

8. The reeling and unreeling device according to any one of claims 1 to 6, characterized in that: The second moving member is an electromagnetic generating member for generating the magnetic attraction force on the first moving member.

9. The reeling and unreeling device according to claim 8, characterized in that: The inner wall of the charging shaft is provided with a strip-shaped input electrode extending longitudinally along the axial direction of the charging shaft, and the strip-shaped input electrode is used to be electrically connected to an external power supply; the second moving member has a contact electrode, and the contact electrode is in conductive contact with the strip-shaped input electrode.

10. The reeling and unreeling device according to claim 9, characterized in that: The inner wall of the charging shaft is provided with a strip groove extending longitudinally along the axial direction of the charging shaft, the strip input electrode is arranged in the strip groove, and the contact electrode extends into the strip groove and is in conductive contact with the strip input electrode.

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