CN219778937U - Positioning device of winding drum and winding equipment - Google Patents

Abstract

The utility model discloses a positioning device of a winding drum and winding equipment. The positioning device of the winding drum of the utility model comprises: a frame; the rotating shaft assembly comprises a first rotating shaft and a second rotating shaft, the second rotating shaft is positioned on one side of the frame, the second rotating shaft is rotatably connected with the first rotating shaft and coaxially arranged with the first rotating shaft, the first rotating shaft is slidably arranged on the frame along the axial direction of the first rotating shaft and can rotate relative to the frame, and the first rotating shaft is configured to be matched with the positioning hole; the driving device is provided with a driving part, the driving part is propped against one end of the second rotating shaft, and the driving device is used for driving the second rotating shaft to move along the axial direction of the first rotating shaft. The first rotating shaft and the second rotating shaft can rotate relatively, so that the second rotating shaft and the driving part are relatively static, and compared with a structure that the first rotating shaft is directly contacted with the driving part, the abrasion of the second rotating shaft and the driving part can be avoided or reduced, and the service life of parts is prolonged.

Description

Positioning device of winding drum and winding equipment

Technical Field

The utility model relates to the technical field of battery winding, in particular to a positioning device of a winding drum and winding equipment.

Background

Before the winding drum of the winding device winds the battery core, the winding drum needs to be positioned, and the winding can be performed only after the accurate position is ensured. When the winding drum of the winding device rotates, a positioning device for positioning the drum core of the winding drum also rotates together with the winding drum, and the positioning device has great abrasion.

Disclosure of Invention

In view of the above, the present utility model provides a positioning device and a winding apparatus for a winding drum, where the positioning device of the winding drum of the present utility model can solve the problem that the contact surface between the first rotating shaft and the driving device is worn greatly due to the direct contact between the first rotating shaft of the positioning device and the driving device because the first rotating shaft and the second rotating shaft are relatively rotated, and the second rotating shaft is in a relatively stationary state when the first rotating shaft rotates.

In a first aspect, the present utility model provides a positioning device of a winding drum, a drum core of the winding drum being formed with a positioning hole, the positioning device comprising:

a frame;

the rotating shaft assembly comprises a first rotating shaft and a second rotating shaft, the second rotating shaft is positioned on one side of the frame, the second rotating shaft is rotatably connected with the first rotating shaft and coaxially arranged with the first rotating shaft, the first rotating shaft is slidably arranged on the frame along the axial direction of the first rotating shaft and can rotate relative to the frame, and the first rotating shaft is configured to be matched with the positioning hole;

the driving device is provided with a driving part, the driving part is propped against one end of the second rotating shaft, and the driving device is used for driving the second rotating shaft to move along the axial direction of the first rotating shaft.

The first rotating shaft of the rotating shaft assembly plays a limiting role on the winding drum, the first rotating shaft is slidably arranged on the frame along the axial direction of the first rotating shaft, when the winding drum needs to be replaced, the first rotating shaft is required to be retracted from a positioning hole of the winding drum, when the winding drum is positioned, a driving part of the driving device pushes the first rotating shaft to move in the direction close to the frame, so that a part of the first rotating shaft can be inserted into the positioning hole of the winding drum and matched with the positioning hole in a positioning way, the winding drum rotates, the first rotating shaft also rotates along with the winding drum, the second rotating shaft abuts against the driving part, the driving part provides axial force for the rotating shaft assembly, and the second rotating shaft and the driving part are enabled to be relatively static due to the fact that the first rotating shaft and the second rotating shaft can relatively rotate.

In some embodiments, the shaft assembly further comprises a connection mechanism by which the second shaft is rotatably connected to the first shaft.

Therefore, compared with a structure that the first rotating shaft is directly connected with the second rotating shaft in a rotating way, the structure of the first rotating shaft and the second rotating shaft is simplified, and the manufacturing difficulty of the first rotating shaft and the second rotating shaft is reduced.

In some embodiments, the shaft assembly further comprises a connector coupled to one end of the first shaft, and the second shaft is rotatably mounted to the connector.

The second rotating shaft is rotatably connected to the connecting piece, and when the connecting piece is damaged, the connecting piece can be replaced, so that the maintenance is facilitated.

In some embodiments, along the axis direction of the first rotating shaft, a mounting hole is formed in one side, away from the first rotating shaft, of the connecting piece, the connecting mechanism further comprises a bearing, the bearing is arranged in the mounting hole, and the other end of the second rotating shaft is matched with the bearing hole of the bearing.

The bearing can reduce the rotation resistance of the first rotating shaft relative to the second rotating shaft, bear certain axial force, and enable the second rotating shaft to be kept in a relatively static state with the driving part more easily when the second rotating shaft abuts against the driving part and the first rotating shaft rotates, so that the abrasion of the contact surface of the second rotating shaft and the driving part is reduced.

In some embodiments, the surface of the mounting hole is formed with a limiting surface facing the bearing, the connection mechanism further includes a bearing limiter mounted to the first shaft, the bearing limiter is located at one end of the bearing, the limiting surface is located at the other end of the bearing, and the bearing is limited between the bearing limiter and the limiting surface.

Therefore, the axial limit function can be achieved on the bearing, and the bearing is prevented from being pulled out of the bearing hole when the driving device provides axial force for the rotating shaft assembly.

In some embodiments, the bearing limiting piece is a retainer ring, an annular retainer ring clamping groove is formed on the surface of the mounting hole, and the retainer ring is clamped in the retainer ring clamping groove.

Therefore, the axial limiting effect on the bearing can be achieved, and the bearing is prevented from being pulled out of the mounting hole when the driving device provides axial force for the rotating shaft assembly.

In some embodiments, the bearing limiting member is a bearing end cover, the bearing end cover is detachably connected to one end of the first rotating shaft, a protrusion is disposed on one side of the bearing end cover, facing the mounting hole, and the protrusion is abutted against an end face of the bearing.

The arrangement of the bearing end cover not only can play a role in limiting the axial direction of the bearing, but also can play a role in preventing dust, thereby being beneficial to prolonging the service life of the bearing.

In some embodiments, the rotating shaft assembly further comprises a shaft limiting piece, a shaft limiting piece clamping groove is formed in the portion, extending out of the bearing hole, of the other end of the second rotating shaft, and the shaft limiting piece is clamped in the shaft limiting piece clamping groove and is abutted against the end face of the bearing.

The setting of axle locating part can play the axial limiting displacement of second pivot, when drive arrangement provides axial force to pivot subassembly, avoids the second pivot to be taken out from the bearing hole of bearing.

In some embodiments, the connector is integrally formed with the first shaft.

The connecting piece and the first rotating shaft are integrally formed, so that the number of parts can be reduced, and the time for mounting and dismounting is saved.

In some embodiments, the connector is removably coupled to the first shaft.

Therefore, the bearing is convenient to assemble and disassemble, when the bearing is damaged, the connection can be disassembled from the first rotating shaft, and the bearing is disassembled, so that the operation is convenient.

In some embodiments, the driving means comprises a cylinder, the movable end of which has said driving portion.

The second rotating shaft is driven to axially move by the air cylinder, so that the positioning can be completed more quickly.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a cross-sectional view of a positioning device of a winding drum in accordance with some embodiments of the present utility model in cooperative positioning with the winding drum;

FIG. 2 is an exploded view of a spindle assembly according to some embodiments of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 1 at I;

FIG. 4 is a cross-sectional view of a positioning device of a winding drum in accordance with some embodiments of the present utility model positioned in cooperation with the winding drum;

FIG. 5 is a cross-sectional view of a positioning device of a winding drum in accordance with some embodiments of the present utility model positioned in cooperation with the winding drum;

FIG. 6 is a cross-sectional view of a positioning device of a winding drum in accordance with some embodiments of the present utility model positioned in cooperation with the winding drum;

FIG. 7 is a cross-sectional view of a positioning device of a winding drum in accordance with some embodiments of the present utility model positioned in cooperation with the winding drum.

Reference numerals in the specific embodiments are as follows:

the device comprises a frame 10, a rotating shaft assembly 20, a first rotating shaft 21, a second rotating shaft 22, a connecting mechanism 23, a connecting piece 231, a mounting hole 231a, a bearing 232, a bearing limiting piece 233, a shaft sleeve 24, a bearing component 25, a shaft limiting piece 26, a driving device 30, a cylinder 31, a driving part 31a, a compression spring 40, a center 50, a winding drum 60 and a positioning hole 61.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present utility model, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present utility model, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The winding drum of the winding device is used as a component for winding the battery cell, and after the battery cell is wound, the winding drum needs to be replaced, and then the battery cell is continuously wound by placing an empty winding drum. After the winding drum is replaced, the replaced winding drum needs to be positioned, the winding drum is positioned through the axial movement of the first rotating shaft of the rotating shaft assembly, specifically, the first rotating shaft is driven by the driving device to axially move, after the winding drum is positioned, the rotating shaft assembly rotates along with the winding drum in the working process, in order to adapt to the rotation of the rotating shaft assembly, the driving part of the driving device is abutted against the first rotating shaft, the axial force can be provided for the first rotating shaft, and meanwhile, the driving part of the driving device and the first rotating shaft can also relatively rotate, but the problem that the abrasion of the driving part of the driving device and the first rotating shaft is large exists.

In order to solve the above problems, the inventor has noted that a second rotating shaft may be provided, the first rotating shaft is rotatably connected with the first rotating shaft, the second rotating shaft abuts against the driving portion, and since the first rotating shaft and the second rotating shaft can rotate relatively, the second rotating shaft and the driving portion can be relatively stationary or relatively slowly rotated, and compared with a structure in which the first rotating shaft is directly contacted with the driving portion, abrasion of the second rotating shaft and the driving portion can be avoided or reduced, and the service life of the parts is prolonged.

The positioning device of the winding drum can be applied to winding equipment of batteries, but not limited to winding equipment of other fields, such as food packaging bags, medicine packaging bags, label winding equipment and the like.

For convenience of explanation, the following embodiment will be described by taking a positioning device of a winding drum 60 according to an embodiment of the present utility model as an example.

Referring to fig. 1-3, the positioning device of the winding drum 60 includes a frame 10, a rotating shaft assembly 20 and a driving device 30. The rotating shaft assembly 20 includes a first rotating shaft 21 and a second rotating shaft 22, the first rotating shaft 21 is slidably mounted on the frame 10 along an axial direction of the first rotating shaft 21 and can rotate relative to the frame 10, a positioning hole 61 is formed in a core of the winding drum 60, an axis of the positioning hole 61 coincides with an axis of the winding drum 60, and the first rotating shaft 21 is configured to cooperate with the positioning hole 61. The second rotating shaft 22 is located at one side of the frame 10, and the second rotating shaft 22 is rotatably connected with the first rotating shaft 21 and coaxially arranged with the first rotating shaft 21. The driving device 30 has a driving portion 31a, the driving portion 31a is disposed against one end of the second rotating shaft 22, and the driving device 30 is used for driving the second rotating shaft 22 to move along the axial direction of the first rotating shaft 21.

The coaxial arrangement of the second rotating shaft 22 and the first rotating shaft 21 means that the axis of the second rotating shaft 22 coincides with the axis of the first rotating shaft 21.

The first rotating shaft 21 is configured to cooperate with the positioning hole 61, that is, the first rotating shaft 21 is inserted into the positioning hole 61, so as to play a role in axially and radially positioning the positioning hole 61, referring to fig. 4, a shoulder is disposed on an insertion side of the first rotating shaft 21, and the shoulder abuts against an end surface of the winding drum so as to play a role in axially limiting, and meanwhile, the first rotating shaft 21 and the positioning hole 61 can adopt clearance fit or transition fit, so as to realize a radial positioning effect of the winding drum 60. In other embodiments, referring to fig. 1, 5 and 6, conical surfaces are formed at two ends of the positioning hole 61, a conical surface is formed at one end of the first rotating shaft 21, the conical surface of the first rotating shaft 21 abuts against one end conical surface of the winding drum 60, and the conical surface of the other end of the winding drum 60 abuts against the tip 50 of the winding device. The specific manner of positioning can be reasonably selected according to actual requirements, and is not particularly limited.

The driving device 30 is a member for driving the second shaft 22 to move axially, and may be an electric push rod, an air cylinder 31, or the like, or may be other linear motion structure, and is not particularly limited herein.

The first rotating shaft 21 of the rotating shaft assembly 20 plays a limiting role on the winding drum 60, the first rotating shaft 21 is slidably mounted on the frame 10 along the axial direction of the first rotating shaft 21, when the winding drum 60 needs to be replaced, the first rotating shaft 21 is required to be contracted and withdrawn from the positioning hole 61 of the winding drum 60, and when the winding drum 60 is positioned, the driving part 31a of the driving device 30 pushes the first rotating shaft 21 to move towards the direction close to the frame 10, so that part of the first rotating shaft 21 can be inserted into the positioning hole 61 of the winding drum 60 and is matched with the positioning hole 61 in a positioning way, the winding drum 60 rotates, the first rotating shaft 21 also rotates along with the winding drum 60, the second rotating shaft 22 abuts against the driving part 31a, the driving part 31a provides axial force for the rotating shaft assembly 20, and as the first rotating shaft 21 and the second rotating shaft 22 can rotate relatively, the second rotating shaft 22 and the driving part 31a are relatively static, compared with the structure that the first rotating shaft 21 is directly contacted with the driving part 31a, the abrasion of the second rotating shaft 22 and the driving part 31a can be avoided or reduced, and the service life of parts is prolonged.

In some embodiments, referring to fig. 1-3, the shaft assembly 20 further includes a connection mechanism 23, and the second shaft 22 is rotatably connected to the first shaft 21 through the connection mechanism 23.

Therefore, compared with the structure that the first rotating shaft 21 is directly connected with the second rotating shaft 22 in a rotating way, the first rotating shaft 21 and the second rotating shaft 22 can be prevented from being perforated, so that the structures of the first rotating shaft 21 and the second rotating shaft 22 are simplified, and the manufacturing difficulty of the first rotating shaft 21 and the second rotating shaft 22 is reduced.

In some embodiments, referring to fig. 1-3, the connecting mechanism 23 further includes a connecting member 231, the connecting member 231 is connected to one end of the first rotating shaft 21, and the second rotating shaft 22 is rotatably mounted on the connecting member 231.

The end of the connecting piece 231 connected to the first rotating shaft 21 means that the connecting piece 231 and the end of the first rotating shaft 21 can be fixed by bolts, welding, and the like, and cannot move relatively.

The second rotating shaft 22 is rotatably connected to the connecting member 231, so that the connecting member 231 can be replaced when the connecting member 231 is damaged, thereby being beneficial to maintenance. In other embodiments, the connecting member 231 is connected to the other end of the second rotating shaft 22, and the first rotating shaft 21 is rotatably mounted on the connecting member 231.

In some embodiments, referring to fig. 1 and fig. 4 to fig. 7, along the axial direction of the first rotating shaft 21, a mounting hole 231a is disposed on a side of the connecting member 231 facing away from the first rotating shaft 21, the rotating shaft assembly 20 further includes a bearing 232, the bearing 232 is disposed in the mounting hole 231a, and the other end of the second rotating shaft 22 is matched with the bearing hole of the bearing 232.

The bearings 232 may be, but are not limited to, deep groove ball bearings 232, angular contact ball bearings 232, thrust ball bearings 232, tapered roller bearings 232, thrust needle bearings 232, and the like. The present utility model is not particularly limited herein.

The bearing 232 can reduce the rotation resistance of the first rotating shaft 21 relative to the second rotating shaft 22, and can bear a certain axial force, so that when the second rotating shaft 22 is abutted against the driving part 31a and the first rotating shaft 21 rotates, the second rotating shaft 22 and the driving part 31a are more easily kept in a relatively static state, and the abrasion of the contact surface of the second rotating shaft 22 and the driving part 31a is reduced.

In some embodiments, referring to fig. 1, 3, and 5-7, the surface of the mounting hole 231a is formed with a limiting surface facing the bearing 232, the shaft assembly 20 further includes a bearing limiter 233 mounted on the first shaft 21, the bearing limiter 233 is located at one end of the bearing 232, the limiting surface is located at the other end of the bearing 232, and the bearing 232 is limited between the bearing limiter 233 and the limiting surface.

The bearing retainer 233 and the retainer surface are located at two ends of the bearing 232 and are disposed against the two ends of the bearing 232.

The mounting hole 231a may be a through hole or a blind hole.

For example, referring to fig. 1 and 3, the mounting hole 231 is a through hole or a blind hole (the structure of the blind hole is not shown in fig. 1 and 3, which is exemplified as a through hole), and the limiting surface is disposed closer to the first rotating shaft 21 than the bearing limiter 233.

Illustratively, the mounting hole 231 is a through hole, and the limiting surface is disposed further away from the first rotating shaft 21 than the bearing limiter 233. That is, the bearing 232 is fitted into the mounting hole 231 from the side of the first rotation shaft 21, and the mounting and dismounting are somewhat complicated as compared with the structure in which the limit surface is closer to the first rotation shaft 21 than the bearing limit piece 233.

The bearing retainer 233 may have various structures, for example, the bearing retainer 233 may be a pin, a bearing end cap, a retainer ring, or the like.

Illustratively, the bearing retainer 233 is a pin (not shown in the drawings), and the sidewall of the mounting hole 231a is provided with a through pin hole, in which the pin is disposed, and from which the pin protrudes to abut against the end face of the bearing 232.

Thus, the bearing 232 may be axially restrained from being withdrawn from the bearing 232 bore when the drive device 30 provides an axial force to the spindle assembly 20.

In some embodiments, referring to fig. 2 and 3, the bearing retainer 233 is a retainer ring, and an annular retainer groove is formed on the surface of the mounting hole 231a, and the retainer ring is disposed in the retainer groove.

Specifically, the bearing retainer 233 may be a circlip for a hole.

This can provide an axial limit function for the bearing 232, and prevent the bearing 232 from being pulled out of the mounting hole 231a when the driving device 30 supplies an axial force to the spindle assembly 20.

In some embodiments, referring to fig. 5-7, the bearing retainer 233 is a bearing end cover, which is detachably connected to one end of the first rotating shaft 21, and a protrusion is disposed on a side of the bearing end cover facing the mounting hole 231a, and the protrusion abuts against an end surface of the bearing 232.

The protrusion may be an annular protrusion. The axis of the annular raised heat exchange bearing 232 is set.

Illustratively, the bearing 232 is a thrust ball bearing with the annular projection bearing against a thrust disk of the thrust ball bearing.

Illustratively, the bearing 232 is a deep groove ball bearing with the annular projection abutting against the outer ring end face of the deep groove ball bearing.

Optionally, the bearing end cover is provided with the through-hole, and the through-hole is worn to locate by second pivot 22 and installs on bearing 232, and the through-hole internal surface is formed with annular groove, is provided with annular oil blanket or ring seal in the annular groove, and annular oil blanket or ring seal and the surface contact of second pivot 22 can play sealed dirt-proof effect, makes dirt-proof effect better. Of course, the annular oil seal or the annular sealing ring is not required to be arranged, and a certain dustproof effect can be achieved.

The arrangement of the bearing end cover not only can play a role in limiting the axial direction of the bearing 232, but also can play a role in preventing dust, thereby being beneficial to prolonging the service life of the bearing 232.

In some embodiments, referring to fig. 2 and 3, the rotating shaft assembly 20 further includes a shaft limiter 26, and a portion of the other end of the second rotating shaft 22 extending from the bearing hole of the bearing 232 is provided with a shaft limiter slot, where the shaft limiter 26 is clamped in the shaft limiter slot and abuts against an end surface of the bearing 232.

The shaft limiter 26 may be a circlip for a shaft.

The shaft limiter 26 may serve as an axial limiter for the second shaft 22, and may prevent the second shaft 22 from being pulled out of the bearing hole of the bearing 232 when the driving device 30 provides an axial force to the shaft assembly 20.

In some embodiments, referring to fig. 6, the connecting member 231 is integrally formed with the first shaft 21.

The connecting member 231 and the first rotating shaft 21 may be integrally formed by welding, or may be directly formed by machining a complete bar, which is not particularly limited herein.

The connecting member 231 is integrally formed with the first rotating shaft 21, so that the number of parts can be reduced, and the time for mounting and dismounting can be saved.

In some embodiments, referring to fig. 1 and 5-7, the connecting member 231 is detachably connected to the first shaft 21.

The connection 231 may be detachably connected to the first shaft 21 by, but not limited to, a bolt connection, a screw connection, or the like.

Therefore, the assembly and the disassembly are convenient, when the bearing 232 is damaged, the connecting piece 231 can be disassembled from the first rotating shaft 21, and then the bearing 232 is disassembled, so that the operation is convenient.

In some embodiments, referring to fig. 1, the driving device 30 includes a cylinder 31, and a movable end of the cylinder 31 has a driving portion 31a.

Specifically, alternatively, an abutting member may be fixedly attached to the movable end of the cylinder 31, and the abutting member may be used as the driving portion 31a, or the movable end of the cylinder 31 may be used as the driving portion 31a.

Positioning can be accomplished more quickly by driving the second rotating shaft 22 to move axially by the air cylinder 31.

In some embodiments, referring to fig. 1 and fig. 4-6, the shaft assembly 20 further includes a shaft sleeve 24 and a bearing member 25, the bearing member 25 is mounted on the frame 10, the shaft sleeve 24 is disposed through a hole of the bearing member 25, the shaft sleeve 24 is sleeved on the first shaft 21, and the first shaft 21 can slide relative to the shaft sleeve 24 along an axial direction of the first shaft 21.

The shaft sleeve 24 and the bearing component 25 are arranged, and the bearing component 25 can be, but is not limited to, a deep groove ball bearing, an angular contact ball bearing or the like, so that the first rotating shaft 21 can rotate along with the winding drum 60, and also can axially stretch and retract, and the winding drum 60 is positioned, namely, the first rotating shaft 21 can realize the sliding connection between the first rotating shaft 21 and the frame 10 through the shaft sleeve 24 and the linear bearing, and simultaneously realize the rotation of the first rotating shaft 21 relative to the frame 10. In other embodiments, referring to fig. 6, the shaft sleeve 24 may be omitted, the bearing member 25 is a linear bearing, the first rotating shaft 21 is directly disposed through a bearing hole of the linear bearing, and the first rotating shaft 21 and the frame 10 may be slidably connected and the first rotating shaft 21 may rotate relative to the frame 10.

In some embodiments, referring to fig. 1 and 4-7, the spindle assembly 20 further includes a compression spring 40, an annular protrusion is formed on an outer circumferential surface of a side of the first spindle 21 away from the winding drum 60, one end of the compression spring 40 abuts against the annular protrusion, the other end of the compression spring 40 abuts against the frame 10 or the shaft sleeve 24, and when the driving device 30 releases the second spindle 22, the first spindle 21 can be retracted from the positioning hole 61 of the winding drum 60 under the elasticity of the compression spring 40.

For convenience of explanation, the following examples will be given by taking a winding apparatus according to an embodiment of the present utility model as an example.

A winding apparatus comprises the above positioning device.

In some embodiments, the winding apparatus includes a winding drum 60, and a core of the winding drum 60 is formed with a positioning hole 61.

The positioning hole 61 is in positioning fit with the first rotation shaft 21.

Specifically, alternatively, the positioning hole 61 is a circular hole, and the first rotating shaft 21 and the positioning hole 61 are in transition fit or clearance fit.

Specifically, alternatively, the winding drum 60 is formed with a first conical surface on two opposite sides of the drum center, a second conical surface with the same taper as the first conical surface is formed at the end of the first rotating shaft 21, the winding device further comprises a center 50 arranged on the stand 10, the center 50 is formed with a third conical surface with the same taper as the first conical surface, the axis of the first conical surface coincides with the axis of the third conical surface, and the center 50 is opposite to the first rotating shaft 21 and is arranged at intervals. When the winding drum 60 is placed on the frame 10 of the first rotating shaft 21 and the center 50, the winding drum 60 can be clamped by driving the first rotating shaft 21, and the axial position and the radial position of the winding drum 60 can be limited by positioning and matching the first conical surface with the second conical surface and the positioning and matching the first conical surface with the third conical surface, so that higher positioning precision is realized.

For convenience of description, referring to fig. 1 to 7, a positioning device of a winding drum 60 according to an embodiment of the present utility model is described as an example.

The positioning device of the winding drum 60 includes a frame 10, a rotating shaft assembly 20, and a driving device 30. The rotating shaft assembly 20 includes a first rotating shaft 21 and a second rotating shaft 22, the first rotating shaft 21 is rotatably connected and coaxially disposed, the first rotating shaft 21 is slidably mounted on the frame 10 along an axial direction of the first rotating shaft 21 and can rotate relative to the frame 10, a positioning hole 61 is formed in a core of the winding drum 60, and the first rotating shaft 21 is configured to cooperate with the positioning hole 61. The second rotating shaft 22 is located at one side of the frame 10, the second rotating shaft 22 and the driving device 30 have a driving portion 31a, the driving portion 31a is abutted against one end of the second rotating shaft 22, and the driving device 30 is used for driving the second rotating shaft 22 to move along the axial direction of the first rotating shaft 21.

The spindle assembly 20 further includes a connection mechanism 23, and the second spindle 22 is rotatably connected to the first spindle 21 by the connection mechanism 23.

The rotating shaft assembly 20 further includes a connecting member 231, the connecting member 231 is connected to one end of the first rotating shaft 21, and the second rotating shaft 22 is rotatably mounted on the connecting member 231.

Along the axis direction of the first rotating shaft 21, a mounting hole 231a is formed in one side, facing away from the first rotating shaft 21, of the connecting piece 231, the rotating shaft assembly 20 further comprises a bearing 232, the bearing 232 is arranged in the mounting hole 231a, and the other end of the second rotating shaft 22 is matched with the bearing hole of the bearing 232.

The surface of the mounting hole 231a is formed with a limiting surface facing the bearing 232, the rotating shaft assembly 20 further comprises a bearing limiting piece 233 mounted on the first rotating shaft 21, the bearing limiting piece 233 is located at one end of the bearing 232, the limiting surface is located at the other end of the bearing 232, and the bearing 232 is limited between the bearing limiting piece and the limiting surface.

Optionally, the bearing limiter 233 is a retainer ring, and an annular retainer ring slot is formed on the surface of the mounting hole 231a, and the retainer ring is disposed in the retainer ring slot.

Optionally, the bearing retainer 233 is a bearing end cover, which is detachably connected to one end of the first rotating shaft 21, and a protrusion is disposed on a side of the bearing end cover facing the mounting hole 231a, and the protrusion abuts against an end surface of the bearing 232.

The rotating shaft assembly 20 further comprises a shaft limiting piece 26, a shaft limiting piece clamping groove is formed in the portion, extending out of the bearing hole of the bearing 232, of the other end of the second rotating shaft 22, and the shaft limiting piece 26 is clamped in the shaft limiting piece clamping groove and abuts against the end face of the bearing 232.

The connection member 231 is integrally formed with or detachably connected to the first shaft 21.

The driving device 30 includes a cylinder 31 or an electric putter, and the movable end of the cylinder 31 or the electric putter has the driving portion 31a.

The rotating shaft assembly 20 further comprises a shaft sleeve 24 and a bearing component 25, the bearing component 25 is mounted on the frame 10, the shaft sleeve 24 is arranged through a hole of the bearing component 25, the shaft sleeve 24 is sleeved on the first rotating shaft 21, and the first rotating shaft 21 can slide relative to the shaft sleeve 24 along the axial direction of the first rotating shaft 21.

Optionally, the shaft assembly 20 further includes a compression spring 40, an annular protrusion is formed on an outer circumferential surface of a side of the first shaft 21 remote from the winding drum 60, one end of the compression spring 40 is abutted against the annular protrusion, the other end of the compression spring 40 is abutted against the frame 10 or the above-mentioned sleeve 24, and when the driving device 30 releases the second shaft 22, the first shaft 21 may be retracted from the positioning hole 61 of the winding drum 60 by an elastic force of the compression spring 40.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (11)

1. A positioning device of a winding drum, a drum core of which is formed with a positioning hole, an axis of which coincides with an axis of the winding drum, characterized by comprising:

a frame;

the rotating shaft assembly comprises a first rotating shaft and a second rotating shaft, the first rotating shaft is slidably arranged on the frame along the axial direction of the first rotating shaft and can rotate relative to the frame, the first rotating shaft is configured to be matched with the positioning hole, the second rotating shaft is positioned on one side of the frame, and the second rotating shaft is rotatably connected with the first rotating shaft and coaxially arranged with the first rotating shaft;

the driving device is provided with a driving part, the driving part is propped against one end of the second rotating shaft, and the driving device is used for driving the second rotating shaft to move along the axial direction of the first rotating shaft.

2. The positioning device of a winding drum according to claim 1, wherein the shaft assembly further comprises a connection mechanism by which the second shaft is rotatably connected to the first shaft.

3. The positioning device of a winding drum according to claim 2, wherein the connecting mechanism comprises:

the connecting piece is connected to one end of the first rotating shaft, and the second rotating shaft is rotatably installed on the connecting piece.

4. A positioning device of a winding drum according to claim 3, wherein a mounting hole is provided on a side of the connecting member facing away from the first rotating shaft in an axial direction of the first rotating shaft, the connecting mechanism further comprises a bearing provided in the mounting hole, and the other end of the second rotating shaft is fitted to the bearing hole of the bearing.

5. The positioning device of a winding drum according to claim 4, wherein a limiting surface facing the bearing is formed on a surface of the mounting hole, the connection mechanism further includes a bearing limiter mounted to the first rotating shaft, the bearing limiter is located at one end of the bearing, the limiting surface is located at the other end of the bearing, and the bearing is limited between the bearing limiter and the limiting surface.

6. The positioning device of a winding drum according to claim 5, wherein the bearing stopper is a retainer ring, an annular retainer ring clamping groove is formed on the surface of the mounting hole, and the retainer ring is clamped in the retainer ring clamping groove.

7. The positioning device of a winding drum according to claim 5, wherein the bearing stopper is a bearing end cap detachably connected to one end of the first rotating shaft, a projection is provided on a side of the bearing end cap facing the mounting hole, and the projection is disposed to abut against an end face of the bearing.

8. The positioning device of a winding drum according to any one of claims 4 to 7, wherein the rotating shaft assembly further comprises a shaft stopper, a portion of the other end of the second rotating shaft extending from the bearing hole is provided with a shaft stopper clamping groove, and the shaft stopper is clamped in the shaft stopper clamping groove and is arranged to abut against an end face of the bearing.

9. A positioning device of a winding drum according to any one of claims 3-7, characterized in that the connecting piece is formed integrally with the first shaft or the connecting piece is detachably connected with the first shaft.

10. The positioning device of a winding drum according to claim 1, wherein the rotating shaft assembly further comprises a shaft sleeve and a bearing component, the bearing component is mounted on the frame, the shaft sleeve is arranged through a hole of the bearing component, the shaft sleeve is sleeved on the first rotating shaft, and the first rotating shaft can slide relative to the shaft sleeve along the axial direction of the first rotating shaft;

and/or the driving device comprises a cylinder, and the movable end of the cylinder is provided with the driving part.

11. Winding device, characterized in that it comprises a positioning device of the winding drum according to any one of claims 1-10.