Unwinding device

Abstract

The utility model relates to the technical field of battery manufacturing equipment, and discloses an unwinding device. The unwinding device comprises a frame body mechanism, a bearing shaft and a positioning mechanism, the bearing shaft is rotatably mounted on the frame body mechanism, the bearing shaft is configured to be used for sleeving a barrel shaft, and the position of a material roll in the axial direction of the bearing shaft is adjustable; the positioning mechanism is installed on the bearing shaft and is configured to fix the position of the material coil. According to the unwinding device, the axial position of a material coil installed on the unwinding device can be flexibly adjusted, and the situation that an unwound base material is damaged due to position deviation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing equipment technology, and in particular to an unwinding device. Background Technology

[0002] In the battery manufacturing process, such as the coating, die-cutting, and lamination of electrode sheets, an unwinding device is used. Specifically, the substrate is wound onto a spool to form a roll. After the roll is installed on the unwinding device, an external traction device pulls the end of the substrate. The spool rotates around its own axis on the unwinding device, thereby pulling the substrate off the unwinding device for subsequent coating, die-cutting, lamination, and other processes.

[0003] During the processing of the substrate, the axial position of the substrate on the unwinding device must be consistent with the receiving position of the downstream processing equipment; otherwise, the substrate may break. After the substrate is wound onto the spool, its position on the spool is not adjustable, and in the prior art, the position of the spool on the unwinding device is inconvenient to adjust.

[0004] Therefore, there is an urgent need for an unwinding device that can solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an unwinding device that can flexibly adjust the axial position of the material roll installed on it, so as to avoid damage to the substrate being unwound due to positional deviation.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The unwinding device includes:

[0008] Frame structure;

[0009] A bearing shaft is rotatably mounted on the frame mechanism, the bearing shaft is configured to be fitted with a feed roll, and the axial position of the feed roll is adjustable on the bearing shaft;

[0010] A positioning mechanism is mounted on the bearing shaft and configured to fix the position of the material roll.

[0011] As an optional solution, the positioning mechanism includes a positioning component disposed at one end of the material roll; the positioning component includes:

[0012] A positioning block, which is sleeved on the bearing shaft and can move along the bearing shaft, is used to abut against the end of the material roll;

[0013] A locking element that can lock the positioning block at any position on the bearing shaft.

[0014] As an optional solution, the positioning block is provided with a threaded hole, the locking member is threadedly connected to the threaded hole, and one end of the locking member abuts against the bearing shaft.

[0015] As an alternative, the end of the positioning block facing the material roll is constructed as a truncated cone, and the end of the truncated cone can be inserted into the central hole of the material roll and abut against the material roll.

[0016] As an optional solution, there are two frame mechanisms, which are arranged at intervals and opposite to each other, and are respectively arranged corresponding to the two ends of the bearing shaft. The two ends of the bearing shaft are respectively rotatably mounted on the corresponding frame mechanism.

[0017] As an optional solution, bearings are connected to both ends of the bearing shaft, the frame mechanism includes bearing seats, the bearing seats support the bearings, and the bearings are detachably connected to the bearing seats.

[0018] As an optional solution, the bearing housing includes a base, a top cover, and a locking assembly. The first end of the top cover is pivotally connected to the base, and the second end of the top cover is fixedly connected to the base via the locking assembly. A limiting groove is formed between the base and the top cover, and the bearing is limited within the limiting groove.

[0019] As an optional solution, the frame mechanism includes a support and an adjustment component, the adjustment component being mounted on the support and having an adjustable position for abutting against the bearing shaft.

[0020] As an optional solution, the adjustment assembly includes an adjustment member, an adjustment plate, an abutment member, and a guide post. One end of the adjustment member is connected to the bracket and rotatably engaged. The other end of the adjustment member passes through the adjustment plate and is threadedly connected to the adjustment plate. The adjustment plate is connected to the abutment member through the guide post. The guide post is slidably engaged with the bracket. The abutment member can abut against the bearing shaft.

[0021] As an optional solution, at least two of the positioning mechanisms are mounted on the bearing shaft.

[0022] The beneficial effects of this utility model are:

[0023] In this invention, the unwinding device is first disassembled from the frame mechanism, and at least part of the positioning mechanism is removed from the bearing shaft. Next, the spool of the material roll is sleeved onto the bearing shaft, and then the removed positioning mechanism is installed back onto the bearing shaft. Then, both ends of the bearing shaft are installed onto the frame mechanism. The positioning mechanism, clamped at both ends of the spool, positions the material roll axially. Adjusting the position of the positioning mechanism on the bearing shaft allows the axial position of the material roll to match that of the downstream material-using equipment. This unwinding device allows for flexible adjustment of the axial position of the material roll, preventing damage to the unwound substrate due to positional deviations. Attached Figure Description

[0024] Figure 1 This is a front view of the material roll installed on the unwinding device according to a specific embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the unwinding device provided in a specific embodiment of this utility model;

[0026] Figure 3 This is a partial structural schematic diagram of the unwinding device provided in a specific embodiment of this utility model.

[0027] In the picture:

[0028] 10. Frame structure; 11. Bracket; 111. Vertical plate; 112. Horizontal plate; 113. Base plate; 114. Guide sleeve; 12. Bearing seat; 121. Base; 1211. Slot; 122. Top cover; 123. Locking assembly; 1231. Hook; 1232. Fastener; 13. Adjustment assembly; 131. Adjusting component; 132. Adjusting plate; 133. Abutment component; 134. Guide post; 135. Second handle;

[0029] 20. Bearing shaft;

[0030] 30. Positioning mechanism; 31. Positioning component; 311. Positioning block; 3111. Frustum; 312. Locking element; 313. First handle;

[0031] 40. Bearings;

[0032] 50. Material roll; 51. Cylindrical shaft; 511. Center hole; 52. Substrate. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] This embodiment provides an unwinding device, which can be used in the coating, die-cutting, and lamination processes of battery electrodes. Specifically, as shown in the example... Figure 1 As shown, the material roll 50 includes a spool 51 and a substrate 52, wherein the substrate 52 is wound around the spool 51. After the material roll 50 is mounted on the unwinding device, an external traction device pulls the end of the substrate 52, and the spool 51 rotates around its own axis on the unwinding device, thereby pulling the substrate 52 out of the unwinding device. Of course, the unwinding device in this embodiment can also be used in other fields where the material roll 50 needs to be unwound.

[0038] like Figure 1 and Figure 2As shown, the unwinding device includes two frame mechanisms 10, a support shaft 20, and a positioning mechanism 30. The two frame mechanisms 10 are arranged opposite to each other, and the two ends of the support shaft 20 are rotatably mounted on the two frame mechanisms 10 respectively. The drum shaft 51 of the material roll 50 is provided with a central hole 511, so that it can be sleeved on the support shaft 20. The positioning mechanism 30 includes two positioning components 31, both of which are sleeved on the support shaft 20. The positions of the two positioning components 31 on the support shaft 20 are adjustable, and they can respectively abut against the two ends of the drum shaft 51 to fix the position of the material roll 50 on the support shaft 20.

[0039] When using the unwinding device of this embodiment, firstly, the bearing shaft 20 is removed from the frame mechanism 10, and one of the positioning components 31 is removed from the bearing shaft 20. Next, the spool 51 of the material roll 50 is sleeved on the bearing shaft 20, and then the removed positioning component 31 is installed on the bearing shaft 20. At this time, the two positioning components 31 are located at both ends of the material roll 50. Then, the two ends of the bearing shaft 20 are installed on the two frame mechanisms 10. The two positioning components 31 clamped at both ends of the spool 51 can position the material roll 50 along the axial direction. At this time, the positions of the two positioning components 31 on the bearing shaft 20 are adjusted respectively, so that the axial position of the material roll 50 matches the downstream material-using equipment. In other words, the unwinding device of this embodiment can flexibly adjust the axial position of the material roll 50, avoiding damage caused by axial positional deviation between the unwound substrate 52 and the downstream material-using equipment.

[0040] like Figure 2 As shown, the positioning component 31 includes a positioning block 311 and a locking member 312. The positioning block 311 is sleeved on the support shaft 20 and can move along the support shaft 20. The locking member 312 can lock the positioning block 311 at any position on the support shaft 20. The position of the positioning component 31 relative to the support shaft 20 can be unlocked or locked by operating the locking member 312. The positioning block 311 can abut against the end of the material roll 50, thereby fixing the position of the material roll 50.

[0041] In some embodiments, the positioning block 311 has a threaded hole that extends radially along the positioning block 311. The locking member 312 includes a screw that is threadedly connected to the threaded hole and abuts against the bearing shaft 20. When the locking member 312 is tightened, the entire positioning assembly 31 is locked relative to the bearing shaft 20. When the locking member 312 is loosened, the positioning assembly 31 can move relative to the bearing shaft 20. The structure is simple and the operation is convenient. In this embodiment, the positioning assembly 31 also includes a first handle 313 connected to the locking member 312. By setting the first handle 313, the locking member 312 can be rotated flexibly without the aid of tools, improving the convenience of user operation and thus improving work efficiency. Of course, in some embodiments, the locking member 312 may also be provided with a mating part that cooperates with tools such as wrenches / screwdrivers, so that the locking member 312 can be operated with the aforementioned tools.

[0042] In some embodiments, multiple threaded holes can be formed on the bearing shaft 20, and these threaded holes are arranged at intervals along the axial direction of the bearing shaft 20. The positioning block 311 has through holes, which can align with different threaded holes as the positioning block 311 moves along the bearing shaft 20. The locking member 312 is a bolt, which passes through the through hole and is threadedly connected to the threaded hole. When the locking member 312 is connected to different threaded holes, the positioning block 311 can be locked in different positions. However, in this solution, the number of adjustable positions of the positioning block 311 is limited, thus its flexibility is slightly reduced.

[0043] In actual use, the size of the center hole 511 of the cylinder 51 of different material rolls 50 is different. For cylinders 51 with a center hole 511 size much larger than that of the bearing shaft 20, it is difficult to maintain synchronous rotation with the bearing shaft 20, which results in the unwinding device being unable to match the cylinder 51.

[0044] In this regard, such as Figure 2 As shown, the end of the positioning block 311 facing the other positioning component 31 is constructed as a truncated cone 3111, and the end of the truncated cone 3111 can be inserted into the center hole 511 of the drum shaft 51. When the inner diameter of the center hole 511 of the drum shaft 51 is larger than that of the bearing shaft 20, the end of the truncated cone 3111 is inserted into the center hole 511. The cooperation of the two truncated cones 3111 can not only axially position the drum shaft 51, but also reliably support the drum shaft 51, ensuring that the drum shaft 51 rotates synchronously with the bearing shaft 20. It can be understood that for drum shafts 51 with different diameters of center holes 511, the insertion depth of the truncated cone 3111 into the center hole 511 will be different. That is to say, by setting the ends of the two positioning blocks 311 facing each other as truncated cones 3111, the adaptability of the unwinding device can be greatly improved.

[0045] like Figure 2 and Figure 3As shown, the frame mechanism 10 includes a bracket 11 and a bearing seat 12. The bearing seat 12 is mounted on the bracket 11. The two ends of the bearing shaft 20 are respectively connected to bearings 40. The two bearing seats 12 support the two bearings 40 respectively, so that the bearing shaft 20 can be rotatably mounted on the two frame mechanisms 10.

[0046] Preferably, the bearing 40 is detachably connected to the bearing housing 12, which greatly improves the ease of assembling and disassembling the bearing 40 from the bearing housing 12, and thus improves the ease of assembling and disassembling the bearing shaft 20. It should be noted that when the material coil 50 needs to be installed, in order to remove the positioning component 31 from the bearing shaft 20, the bearing 40 at the corresponding end also needs to be removed from the bearing shaft 20.

[0047] like Figure 2 and Figure 3 As shown, the bearing housing 12 includes a base 121, an upper cover 122, and a locking assembly 123. The base 121 is mounted on the bracket 11, and the upper cover 122 is disposed on the upper side of the base 121. The first end of the upper cover 122 is pivotally connected to the base 121, and the locking assembly 123 is connected to the second end of the upper cover 122. When the second end of the upper cover 122 is rotated to fit against the base 121, a limiting groove is formed between the base 121 and the upper cover 122. The bearing 40 can be limited within the limiting groove. At this time, the position of the upper cover 122 can be locked by the locking assembly 123, thereby locking the position of the bearing 40.

[0048] In this embodiment, a slot 1211 is provided on the side of the base 121. The locking assembly 123 includes a hook 1231 and a fastener 1232. One end of the hook 1231 is pivotally connected to the second end of the upper cover 122, and the other end of the hook 1231 can hook into the slot 1211. Through the cooperation of the hook 1231 and the slot 1211, the closing position of the upper cover 122 can be accurately ensured, thereby precisely fixing the bearing 40. The fastener 1232 can pass through the hook 1231 and connect to the base 121. The fastener 1232 can further lock the position of the hook 1231, that is, lock the position of the upper cover 122, ensuring the reliability of the bearing 40 fixation. Optionally, the hook 1231 has a threaded hole, and the fastener 1232 is threadedly connected to the threaded hole and can abut against the base 121 to achieve the position locking of the upper cover 122.

[0049] Of course, in other embodiments, the two ends of the top cover 122 can be connected to the base 121 by two fasteners respectively to fix the bearing 40.

[0050] like Figure 2 and Figure 3As shown, in this embodiment, the support 11 includes a base plate 113, a vertical plate 111, and a horizontal plate 112. The base plate 113 is used to support the support on the ground. The vertical plate 111 is arranged perpendicular to the base plate 113. The horizontal plate 112 is arranged parallel to the base plate 113 and connected to the upper end of the vertical plate 111. The base 121 of the bearing seat 12 is mounted on the horizontal plate 112. In this embodiment, the support 11 is generally constructed in an I-shape, thereby improving the structural strength of the support 11. In other embodiments, the specific structure of the support 11 can be flexibly configured as needed, and is not limited here.

[0051] like Figure 2 and Figure 3 As shown, the frame mechanism 10 also includes an adjustment component 13, which is mounted on the bracket 11 and abuts against the bearing shaft 20. The position of the adjustment component 13 is adjustable to adjust the abutment pressure on the bearing shaft 20. When the adjustment component 13 abuts against the bearing shaft 20 with different abutment pressures, the bearing shaft 20 will experience different amounts of frictional force during rotation, i.e., the rotation of the bearing shaft 20 will encounter different amounts of resistance. Therefore, by adjusting the abutment pressure of the adjustment component 13 on the bearing shaft 20, the rotational speed of the bearing shaft 20 can be adjusted, thereby meeting the unwinding requirements under different processes and improving the applicability of the unwinding device. It is understood that in some embodiments, both frame mechanisms 10 include the adjustment component 13, while in some embodiments, only one frame mechanism 10 includes the adjustment component 13.

[0052] In some embodiments, such as Figure 3 As shown, the adjustment assembly 13 includes an adjustment member 131, an adjustment plate 132, an abutment member 133, and a guide post 134. One end of the adjustment member 131 is connected to and rotatably engaged with the bracket 11. The other end of the adjustment member 131 passes through the adjustment plate 132 and is threadedly connected to the adjustment plate 132. The adjustment plate 132 is connected to the abutment member 133 via the guide post 134. The guide post 134 is slidably engaged with the bracket 11. The abutment member 133 can abut against the bearing shaft 20. When the user rotates the adjustment member 131, the adjustment plate 132 moves along the guide direction of the guide post 134. The adjustment plate 132 drives the abutment member 133 to move slightly in the direction closer to or further away from the bearing shaft 20 via the guide post 134, thereby adjusting the abutment pressure of the abutment member 133 against the bearing shaft 20. The structure is simple and the operation is convenient.

[0053] In this embodiment, as Figure 3 As shown, the adjusting member 131 is disposed on the lower side of the horizontal plate 112 and extends vertically. The adjusting member 131 is rotatably engaged with the horizontal plate 112 through the bearing 40. The adjusting plate 132 is also disposed on the lower side of the horizontal plate 112. The guide post 134 extends vertically and penetrates the horizontal plate 112 to connect with the adjusting plate 132 and the abutting member 133 respectively.

[0054] In this embodiment, the bracket 11 also includes a guide sleeve 114, which is mounted on the horizontal plate 112. The guide post 134 is slidably engaged with the guide sleeve 114. The engagement between the guide post 134 and the guide sleeve 114 can improve the smoothness of the movement of the abutment member 133, reduce the wear of parts, and increase the service life of the unwinding device.

[0055] like Figure 3 As shown, the adjustment assembly 13 also includes a second handle 135, which is connected to the adjustment member 131. By providing the second handle 135, the adjustment member 131 can be rotated flexibly without the aid of tools, improving the convenience of user operation and thus improving work efficiency. Of course, in some embodiments, the adjustment member 131 may also be provided with a mating part that cooperates with tools such as wrenches / screwdrivers, so as to facilitate the operation of the adjustment member 131 with the aid of such tools.

[0056] In this embodiment, the upper side of the abutment member 133 is provided with an arc-shaped support surface, which supports the lower side of the bearing shaft 20. The arc-shaped support surface ensures that the friction force on the bearing shaft 20 is relatively uniform, thereby ensuring that the bearing shaft 20 rotates smoothly.

[0057] In other embodiments, the adjustment component 13 can also be in another manner (in this manner, the positional arrangement of the components of the adjustment component 13 is approximately the same as that of the adjustment component 13 described above, so it can be referred to...). Figure 3 (Understanding). Specifically, the adjustment assembly 13 includes an adjustment member 131, an adjustment plate 132, an abutment member 133, and a guide post 134. The adjustment member 131 and the adjustment plate 132 are both disposed on the lower side of the horizontal plate 112. The adjustment member 131 includes a protrusion and a through portion. The protrusion is disposed at the lower end of the through portion and supports the lower side of the adjustment plate 132. The through portion extends vertically and passes through the adjustment plate 132 before being threadedly connected to the bracket 11. The abutment member 133 is connected to the adjustment plate 132 through the guide post 134. The guide post 134 is slidably engaged with the bracket 11, and the abutment member 133 abuts against the bearing shaft 20. When the adjusting member 131 is rotated, the adjusting member 131, the adjusting plate 132, the guide post 134 and the abutting member 133 move up and down synchronously together, thereby adjusting the abutting pressure of the abutting member 133 on the bearing shaft 20, and thus adjusting the friction force on the bearing shaft 20.

[0058] In some embodiments, at least two bobbins 51 may be mounted on the bearing shaft 20. In this regard, a corresponding number of positioning mechanisms 30 are provided on the bearing shaft 20. Each positioning mechanism 30 is used to position a bobbin 51 on the bearing shaft 20, so that the unwinding device can achieve axial positioning of multiple bobbins 51.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An unwinding device, characterized in that, include: Frame structure (10); A bearing shaft (20) is rotatably mounted on the frame mechanism (10). The bearing shaft (20) is configured to be fitted with a feed roll (50). The feed roll (50) is adjustable in axial position on the bearing shaft (20). A positioning mechanism (30) is mounted on the bearing shaft (20) and configured to fix the position of the material roll (50).

2. The unwinding device as described in claim 1, characterized in that, The positioning mechanism (30) includes a positioning component (31), which is disposed at one end of the material roll (50); the positioning component (31) includes: Positioning block (311), which is sleeved on the bearing shaft (20) and can move along the bearing shaft (20), is used to abut against the end of the material roll (50); A locking element (312) is provided, which is capable of locking the positioning block (311) at any position on the bearing shaft (20).

3. The unwinding device as described in claim 2, characterized in that, The positioning block (311) has a threaded hole, the locking member (312) is threadedly connected to the threaded hole, and one end of the locking member (312) abuts against the bearing shaft (20).

4. The unwinding device as described in claim 2, characterized in that, The positioning block (311) is constructed as a truncated cone (3111) at one end facing the material roll (50). The end of the truncated cone (3111) can be inserted into the center hole (511) of the material roll (50) and abut against the material roll (50).

5. The unwinding device as described in claim 1, characterized in that, There are two frame mechanisms (10), which are arranged opposite each other at intervals and are respectively arranged to correspond to the two ends of the bearing shaft (20). The two ends of the bearing shaft (20) are respectively rotatably arranged on the corresponding frame mechanism (10).

6. The unwinding device according to any one of claims 1-5, characterized in that, The bearing shaft (20) is connected to bearings (40) at both ends. The frame mechanism (10) includes a bearing seat (12), which supports the bearing (40). The bearing (40) and the bearing seat (12) are detachably connected.

7. The unwinding device as described in claim 6, characterized in that, The bearing housing (12) includes a base (121), a top cover (122), and a locking assembly (123). The first end of the top cover (122) is pivotally connected to the base (121), and the second end of the top cover (122) is fixedly connected to the base (121) through the locking assembly (123). A limiting groove is formed between the base (121) and the top cover (122), and the bearing (40) is limited within the limiting groove.

8. The unwinding device according to any one of claims 1-5, characterized in that, The frame mechanism (10) includes a bracket (11) and an adjustment component (13). The adjustment component (13) is mounted on the bracket (11) and its position is adjustable to abut against the bearing shaft (20).

9. The unwinding device as described in claim 8, characterized in that, The adjustment assembly (13) includes an adjustment member (131), an adjustment plate (132), an abutment member (133), and a guide post (134). One end of the adjustment member (131) is connected to the bracket (11) and rotates in cooperation with it. The other end of the adjustment member (131) passes through the adjustment plate (132) and is threadedly connected to the adjustment plate (132). The adjustment plate (132) is connected to the abutment member (133) through the guide post (134). The guide post (134) slides in cooperation with the bracket (11). The abutment member (133) can abut against the bearing shaft (20).

10. The unwinding device according to any one of claims 1-5, characterized in that, At least two of the positioning mechanisms (30) are mounted on the bearing shaft (20).

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