CN216004611U

CN216004611U - Unwinding device and winding equipment

Info

Publication number: CN216004611U
Application number: CN202121257717.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2022-03-11
Anticipated expiration: 2031-06-07

Abstract

The utility model relates to an unreeling device and reeling equipment. This unwinding device includes: a bearing seat; the material shaft mechanism comprises a material preparing shaft, a connecting shaft and a unreeling shaft, the material preparing shaft is connected to the bearing seat, the connecting shaft is sleeved in the material preparing shaft and controlled to move axially relative to the material preparing shaft and rotate around the axis of the material preparing shaft, and the unreeling shaft is connected to the connecting shaft and coaxial with the material preparing shaft and the connecting shaft; the connecting shaft can drive the unreeling shaft to be axially butted or separated with the material preparing shaft in the axial moving process; and the material pushing mechanism is used for pushing the material coil on the material preparing shaft to move towards the unwinding shaft.

Description

Unwinding device and winding equipment

Technical Field

The utility model relates to the technical field of battery manufacturing equipment, in particular to an unreeling device and reeling equipment.

Background

In the production and manufacturing process of the lithium battery, a material tape (such as a cathode sheet, a diaphragm and an anode sheet) unwound and output by an unwinding device needs to be wound to form a battery cell.

The unwinding device comprises an unwinding shaft used for installing a material roll, and the unwinding shaft drives the material roll on the unwinding shaft to rotate so as to unwind and discharge the material belt. To improve the efficiency of roll change, it is generally necessary to place multiple rolls on the unwind reel. However, the plurality of material rolls are arranged on the unreeling shaft, and the unreeling shaft is overloaded, so that the service life of the unreeling shaft is greatly shortened.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an unwinding device and a winding apparatus for overcoming the above-mentioned drawbacks, in order to solve the problems in the prior art that the unwinding shaft is overloaded and the service life of the unwinding shaft is greatly shortened due to the need to place a plurality of material rolls on the unwinding shaft.

An unwinding device, comprising:

a bearing seat;

the material shaft mechanism comprises a material preparing shaft, a connecting shaft and a unreeling shaft, the material preparing shaft is connected to the bearing seat, the connecting shaft is sleeved in the material preparing shaft and is controlled to move axially relative to the material preparing shaft and rotate around the axis of the material preparing shaft, and the unreeling shaft is connected to the connecting shaft and is coaxial with the material preparing shaft and the connecting shaft; the connecting shaft can drive the unreeling shaft to be axially butted or separated with or from the material preparing shaft in the process of axially moving; and

and the material pushing mechanism is used for pushing the material roll on the material preparing shaft to move towards the unwinding shaft.

In one embodiment, the unreeling shaft is provided with a first loading area and a second loading area which are arranged along the axial direction, the first loading area is positioned on one side of the second loading area close to the material preparing shaft, and the first loading area is used for bearing a material roll pushed by the material pushing mechanism and tensioning the material roll;

the unwinding device further comprises a material shifting mechanism, the material shifting mechanism is used for pushing the material roll on the first charging area to move towards the second charging area, and the second charging area is used for bearing the material roll pushed by the material shifting mechanism and tensioning the material roll.

In one embodiment, the unreeling shaft comprises a shaft body and a first charging sleeve and a second charging sleeve which are coaxially sleeved outside the shaft body, the shaft body is connected with the connecting shaft, the first charging sleeve and the shaft body rotate synchronously to form the first charging area, and the second charging sleeve can rotate relative to the shaft body to form the second charging area.

In one embodiment, the material poking mechanism comprises a material poking driving piece, a transfer seat and a material poking piece; the material shifting driving piece is installed on the bearing seat, and the material shifting piece is installed at the driving end of the material shifting driving piece through the transfer seat so as to be driven by the material shifting driving piece to move along the axial direction of the unreeling shaft.

In one embodiment, the material stirring mechanism further comprises a rotary driving part and a material stirring shaft, the rotary driving part is mounted on the transfer seat, one end of the material stirring shaft is in driving connection with the rotary driving part so that the rotary driving part can drive the material stirring shaft to rotate, and the other end of the material stirring shaft is connected with the material stirring part;

the material stirring part comprises a material stirring position and an avoiding position in the process of rotating along with the material stirring shaft; when the material stirring piece rotates to the material stirring position, the material coil of the first material loading area is positioned on a moving path of the material stirring piece moving along the axial direction of the unwinding shaft; when the material stirring piece rotates to the avoiding position, the material roll of the first material loading area is positioned outside a moving path of the material stirring piece moving along the axial direction of the unreeling shaft.

In one embodiment, a groove is formed in the circumferential surface of one end, close to the unwinding shaft, of the material preparation shaft, the material shaft mechanism further comprises a tensioning assembly, the tensioning assembly comprises a wedge block, a tensioning driving member and a push rod, the wedge block and the tensioning block are arranged in the groove, the tensioning block is in sliding fit with the wedge block, the tensioning driving member is mounted on the bearing seat and is in driving connection with one end of the push rod so as to drive the push rod to move in the axial direction of the material preparation shaft, and the other end of the push rod is connected with the wedge block;

the wedge block can drive the tensioning block to extend out of the groove in the process of moving along the axial direction of the material preparing shaft along with the push rod.

In one embodiment, the tensioning assembly further comprises an elastic member, the elastic member abuts against the tensioning block and the stock material shaft and is used for providing pre-tensioning force for enabling the tensioning block to have the movement tendency of retracting into the groove.

In one embodiment, the unwinding device further comprises a driving mechanism, wherein the driving mechanism comprises a movable driving member, a sliding seat and an unwinding driving member;

the sliding seat is movably connected to the bearing seat along the axial direction of the connecting shaft and is in driving connection with the movable driving piece;

the unreeling driving piece is installed on the sliding seat and is in driving connection with the connecting shaft so as to drive the connecting shaft to rotate around the axis of the unreeling driving piece.

In one embodiment, the unwinding device further comprises a deviation correcting mechanism, the deviation correcting mechanism comprises a base and a deviation correcting driving member, the bearing seat is movably connected to the base along the axial direction of the unwinding shaft, and the deviation correcting driving member is used for driving the bearing seat to move relative to the base along the axial direction of the unwinding shaft.

A winding device comprises the unwinding device in any one of the above embodiments.

The unwinding device and the winding device can load a plurality of material rolls on the material preparing shaft initially, and one material roll is loaded on the unwinding shaft. The connecting shaft drives the unreeling shaft to rotate, and then drives the material roll on the unreeling shaft to rotate so as to unreel the output material belt. When the material roll on the unwinding shaft is unwound and needs to be changed, the connecting shaft stops rotating and moves axially until the unwinding shaft is driven to be axially butted with the material preparing shaft. The pusher mechanism then pushes each roll on the stock preparation shaft towards the payout roller until the roll closest to the payout roller is moved onto the payout roller. Then, the connecting shaft moves along the axial direction, so that the unreeling shaft is separated from the stock preparing shaft, and one-time reel replacement is completed. At the moment, the connecting shaft can drive the unreeling shaft to rotate around the axis of the unreeling shaft so as to unreel the output material belt again.

So, utilize the axle of prepareeing material to store a plurality of material rolls, and unreel the axle and only load a material and roll up and unreel to reduce the load of unreeling the axle, be favorable to improving the life of unreeling the axle.

Drawings

Fig. 1 is a top view of an unwinding device according to an embodiment of the present invention;

FIG. 2 is a left side view of the unwinding device shown in FIG. 1;

FIG. 3 is a right side view of the unwinding device shown in FIG. 1;

fig. 4 is a schematic structural view of a material shaft mechanism of the unwinding device shown in fig. 1;

FIG. 5 is a cross-sectional view of the stub shaft mechanism shown in FIG. 4;

FIG. 6 is a schematic structural view of a tensioning assembly of the material shaft mechanism shown in FIG. 4;

FIG. 7 is a schematic structural view of a wedge block of the tensioning assembly shown in FIG. 6;

fig. 8 is a schematic structural view of a tensioning block of the tensioning assembly shown in fig. 6.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 2 and fig. 3, an unwinding device according to an embodiment of the present invention includes a supporting base 10, a material shaft mechanism 20 and a material pushing mechanism 30.

The material shaft mechanism 20 includes a material preparing shaft 21, a connecting shaft 22, and a unwinding shaft 23. The material shaft 21 is connected to the carrying seat 10, and the connecting shaft 22 is sleeved in the material shaft 21 and controlled to move axially and rotate around its axis relative to the material shaft 21. The unwinding shaft 23 is connected to the connection shaft 22, and is disposed coaxially with the standby shaft 21 and the connection shaft 22. Wherein, the connecting shaft 22 can drive the unreeling shaft 23 to axially butt joint or separate with the material preparing shaft 21 in the process of moving along the axial direction. The pushing mechanism 30 is used to push the material roll on the stock shaft 21 to move towards the unwinding shaft 23.

The unwinding device may initially load a plurality of material rolls on the material preparation shaft 21, and one material roll is loaded on the unwinding shaft 23. The connecting shaft 22 drives the unwinding shaft 23 to rotate, and further drives the material roll on the unwinding shaft 23 to rotate so as to unwind the output material belt. When the material roll on the unwinding shaft 23 is unwound and needs to be changed, the connecting shaft 22 stops rotating and moves along the axial direction until the unwinding shaft 23 is driven to be in axial butt joint with the material preparing shaft 21. Then, the material pushing mechanism 30 pushes each roll on the stock shaft 21 to move toward the unwinding shaft 23 until the one roll closest to the unwinding shaft 23 moves onto the unwinding shaft 23. Then, the connecting shaft 22 is moved in the axial direction, so that the unwinding shaft 23 is separated from the stock shaft 21, and a reel change is completed. At this time, the connection shaft 22 can drive the unwinding shaft 23 to rotate around its axis, so as to unwind the output material tape again.

Therefore, the standby shaft 21 is used for storing a plurality of material rolls, and the unreeling shaft 23 is only loaded with one material roll for unreeling, so that the load of the unreeling shaft 23 is reduced, and the service life of the unreeling shaft 23 is prolonged.

Specifically, in the embodiment, one end of the standby shaft 21 is fixedly connected to the bearing seat 10, the connecting shaft 22 penetrates through the standby shaft 21 and one end of the standby shaft, which is far away from the bearing seat 10, is connected to the unwinding shaft 23, so that the unwinding shaft 23 is driven to rotate when the connecting shaft 22 rotates around its own axis, and the connecting shaft 22 drives the unwinding shaft 23 to axially butt against or separate from one end of the standby shaft 21, which is far away from the bearing seat 10.

Specifically, in the embodiment, the material shaft mechanism 20 further includes a sliding sleeve (not shown), the sliding sleeve is sleeved between the connecting shaft 22 and the material preparing shaft 21, the connecting shaft 22 can move axially relative to the sliding sleeve, and the sliding sleeve can rotate around its axis relative to the material preparing shaft 21. In this way, it is achieved that the connecting shaft 22 is axially movable and rotatable about its own axis with respect to the preparation shaft 21. It should be noted that, the sliding sleeve and the connecting shaft 22 are assembled by using a key slot structure, so that the connecting shaft 22 can move axially relative to the sliding sleeve, but cannot rotate around its own axis relative to the sliding sleeve. The sliding sleeve and the material preparing shaft 21 are assembled by using a bearing structure, so that the sliding sleeve can rotate around the axis of the sliding sleeve relative to the material preparing shaft 21 and cannot move axially relative to the material preparing shaft 21.

In the embodiment, the material spool 21 is provided with a plurality of guide wheels 213 (see fig. 5) arranged along the axial direction, so that the material roll on the material spool 21 can move to the unwinding shaft 23 along the guide wheels 213 under the pushing action of the material pushing mechanism 30, and the material pushing is easier and more flexible.

Referring to fig. 4, 6, 7 and 8, in the embodiment of the present invention, a groove 211 is formed on the circumferential surface of the material preparing shaft 21 near one end of the unwinding shaft 23. The material shaft mechanism 20 further includes a tension assembly 24, and the tension assembly 24 includes a wedge block 241, a tension block 242, a tension driving member 243, and a push rod 244. The wedge block 241 and the tension block 242 are arranged in the groove 211, and the wedge block 241 is in sliding fit with the tension block 242. The tension driving member 243 is installed on the carriage 10 and is in driving connection with one end of the push rod 244 to drive the push rod 244 to move along the axial direction of the material preparing shaft 21. The other end of the push rod 244 is connected to the wedge block 241 so that the wedge block 241 moves together with the push rod 244 in the axial direction of the charging shaft 21.

The wedge block 241 can drive the tension block 242 to extend out of the groove 211 along with the axial movement of the push rod 244 along the preparation shaft 21. Alternatively, the tensioning drive 243 may employ a pneumatic cylinder.

Thus, when the material roll on the material preparing shaft 21 is not required to be pushed to the unwinding shaft 23, the tensioning driving member 243 drives the wedge block 241 to move through the push rod 244, so that the wedge block 241 drives the tensioning block 242 to extend out of the groove 211, so as to tension the material roll closest to the unwinding shaft 23 on the material preparing shaft 21, and prevent the material roll on the material preparing shaft 21 from moving to the unwinding shaft 23 due to misoperation or vibration. When the material roll on the preparation shaft 21 needs to be pushed to the unwinding shaft 23, the tensioning driving member 243 drives the wedge block 241 to move reversely through the push rod 244 to release the tensioning fixation of the material roll, so that the material roll on the preparation shaft 21 can move to the unwinding shaft 23 under the pushing action of the material pushing mechanism 30.

Further, the material preparing shaft 21 is further provided with an avoiding groove 212, the avoiding groove 212 extends to the groove 211 along one end of the material preparing shaft 21 close to the bearing seat 10, and the push rod 244 is accommodated in the avoiding groove 212, so that the push rod 244 and the material roll on the material preparing shaft 21 are mutually avoided.

In a specific embodiment, the tensioning assembly 24 further comprises an elastic member 245 (see fig. 6), and the elastic member 245 abuts against the tensioning block 242 and the standby shaft 21 for providing a pre-tensioning force to make the tensioning block 242 have a movement tendency to retract into the recess 211. In this way, the elastic member 245 is disposed such that the tensioning block 242 can be rapidly retracted into the recess 211.

Further, the tensioning assembly 24 further includes a stopper 245 disposed in the groove 211, the wedge block 241 can move along the axial direction of the stock shaft 21 relative to the stopper 245, the tensioning block 242 can move along the radial direction of the stock shaft 21 relative to the stopper 245, and the stopper 245 can block the tensioning block 242 from disengaging from the groove 211.

Further, the elastic member 245 may be a torsion spring, shaft portions 2422 are disposed on two opposite sides of the tensioning block 242, the two shaft portions 2422 are sleeved with torsion springs, and two torsion arms of each torsion spring are connected to the stop block 245. Thus, under the pushing action of the wedge block 241, the expansion block 242 can overcome the elastic force of the torsion spring and extend out of the groove 211 along the radial direction of the material preparing shaft 21 (at this time, the torsion spring stores energy). After the pushing action of the wedge 241 is lost, the tension block 242 can be retracted into the groove 211 rapidly along the radial direction of the material preparing shaft 21 under the elastic force of the torsion spring.

In an embodiment, the wedge block 241 has a first inclined surface 2411 inclined with respect to the axial direction of the stock shaft 21, and the tension block 242 has a second inclined surface 2421 slidably engaged with the first inclined surface 2411. During the movement of the wedge 241 along the axial direction of the material preparing shaft 21 along with the push rod 244, the second inclined surface 2421 of the tension block 242 slides relative to the first inclined surface 2411, and the first inclined surface 2411 and the second inclined surface 2421 are inclined relative to the axial direction of the material preparing shaft 21, so that the tension block 242 can extend out of or retract into the groove 211.

Referring to fig. 1 to fig. 3, in an embodiment of the present invention, the pushing mechanism 30 includes a pushing driving member 31 and a pushing block 32, the pushing driving member 31 is mounted on the carrying seat 10 and is in driving connection with the pushing block 32 to drive the pushing block 32 to move along the axial direction of the material preparing shaft 21. The pusher block 32 can push the material roll on the supply spool 21 toward the unwinding shaft 23 during the axial movement of the supply spool 21. Alternatively, the pusher actuator 31 may employ an electric cylinder.

Referring to fig. 4 and 5, in the embodiment of the present invention, the unreeling shaft 23 has a first loading region 231 and a second loading region 232 arranged along the axial direction, and the first loading region 231 is located on the side of the second loading region 232 close to the charging shaft 21, that is, the first loading region 231 is closer to the charging shaft 21 than the second loading region 232. The first loading area 231 is used for carrying the material roll pushed by the material pushing mechanism 30 and tensioning and fixing.

The unwinding device further comprises a material shifting mechanism 40 (see fig. 1 to 3), wherein the material shifting mechanism 40 is used for pushing the material roll on the first loading area 231 to move towards the second loading area 232, and the second loading area 232 is used for carrying and tensioning the material roll pushed by the material shifting mechanism 40. In this way, after the material roll in the first loading area 231 is completely unreeled, the material roll that is completely unreeled (i.e. an empty material cylinder) can be pushed to the second loading area 232 by the material poking mechanism 40, so that the material roll pushed by the material pushing mechanism 30 from the material preparing shaft 21 can be loaded again in the first loading area 231, and the output material strip can be unreeled again. It should be noted that the first loading area 231 can only be loaded with one roll and the second loading area 232 can be loaded with a plurality of empty cartridges.

In one embodiment, the unreeling shaft 23 includes a shaft body 233, and a first charging sleeve 234 and a second charging sleeve 235 coaxially sleeved outside the shaft body 233. The shaft body 233 is connected with the connecting shaft 22 to rotate about its axis and move in the axial direction in synchronization with the connecting shaft 22. The first charging sleeve 234 rotates in synchronization with the shaft body 233 to form the first charging region 231, and the second charging sleeve 235 rotates relative to the shaft body 233 to form the second charging region 232. In this way, the material pushing mechanism 40 is configured to push the material roll unreeled from the first material loading sleeve 234 of the unreeling shaft 23 (i.e., an empty material cartridge) onto the second material loading sleeve 235, and the material pushing mechanism 30 is configured to push the material roll on the material preparing shaft 21 onto the first material loading sleeve 234 of the unreeling shaft 23. Specifically, the first charging sleeve 234 is fixedly connected with the shaft body 233, and the second charging sleeve 235 is connected with the shaft body 233 through a bearing such that the second charging sleeve 235 is rotatable with respect to the shaft body 233.

It should be noted that, a slip shaft is generally adopted in a conventional unreeling shaft, and due to the effect of inertia, the slip shaft has a friction slip phenomenon during starting and stopping, so that the unreeling precision is low. The first material loading sleeve 234 of the unreeling shaft 23 is sleeved outside the shaft body 233 and fixedly connected with the shaft body 233, and the shaft body 233 is fixedly connected with the connecting shaft 22, so that the rotating shaft 22 drives the shaft body 233 and the first material loading sleeve 234 to synchronously rotate, and when the reel is started or stopped, no friction and slip phenomenon exists between the shaft body 233 and the first material loading sleeve 234 and between the connecting shaft 22 and the shaft body 233, thereby being beneficial to improving the starting and stopping unreeling accuracy of the unreeling shaft 23 and improving unreeling accuracy.

Further, the kick-out mechanism 40 is also configured to couple with the second charging sleeve 235 when the shaft body 233 rotates, such that the second charging sleeve 235 does not rotate with the shaft body 233. Therefore, when the material needs to be unreeled, the connecting shaft 22 drives the shaft body 233 to rotate, the shaft body 233 drives the first material charging sleeve 234 to rotate, and the first material charging sleeve 234 drives the material roll thereon to rotate so as to unreel the output material belt. Meanwhile, the second material loading sleeve 235 is matched and connected with the material shifting mechanism 40 and does not rotate along with the shaft body 233, so that only the material roll on the first material loading sleeve 234 rotates in the unreeling process, and the empty material cylinder on the second material loading sleeve 235 does not rotate, thereby being beneficial to further reducing the dynamic load of the unreeling shaft 23 and prolonging the service life of the unreeling shaft 23.

In one embodiment, the material ejecting mechanism 40 includes a material ejecting driving member 41, a transferring seat 42 and a material ejecting member 43. The material-stirring driving member 41 is mounted on the bearing seat 10, and the material-stirring member 43 is mounted on the driving end of the material-stirring driving member 41 through the transfer seat 42 so as to be driven by the material-stirring driving member 41 to move along the axial direction of the unreeling shaft 23. In this way, the setting member 43 is driven by the setting drive member 41 to move from the first loading region 231 to the second loading region 232 in the axial direction of the payout shaft 23 until the empty cartridge of the first loading region 231 is pushed to the second loading region 232. And after the material is pushed to the proper position, the material pushing piece 43 is matched and connected with the second material loading sleeve 235, so that the material barrel is kept static when the material is unreeled (the second material loading sleeve 235 does not rotate along with the shaft body 233). Alternatively, the kick-out drive 41 may be a pneumatic cylinder.

Further, the second charging sleeve 235 is provided with a fitting groove 2352 (see fig. 1) which can be coupled with or separated from the stirring member 43, and when the stirring member 43 pushes the empty barrel of the first charging area 231 to the second charging area 232, the stirring member 43 enters the fitting groove 2352, thereby playing a role of preventing the second charging sleeve 235 from rotating along with the shaft body 233.

Further, the material stirring mechanism 40 further comprises a rotary driving member 44 and a material stirring shaft 45, the rotary driving member 44 is mounted on the transfer seat 42, one end of the material stirring shaft 45 is in driving connection with the rotary driving member 44, so that the rotary driving shaft can drive the material stirring shaft 45 to rotate, and the other end of the material stirring shaft 45 is connected with the material stirring member 43.

The material stirring part 43 comprises a material stirring position and an avoiding position in the process of rotating along with the material stirring shaft 45. When the setting member 43 is rotated to the setting position, the material roll of the first charging area 231 is located on a moving path of the setting member 43 moving in the axial direction of the unreeling shaft 23, so that the setting member 43 can push the material roll (empty cartridge) of the first charging area 231 to the second charging area 232. When the material stirring piece 43 rotates to the avoiding position, the material roll of the first loading area 231 is positioned outside the moving path of the material stirring piece 43 moving along the axial direction of the unreeling shaft 23, so that the material stirring piece 43 does not interfere with the material roll of the first loading area 231 when moving from the second loading area 232 to the first loading area 231 for resetting. Alternatively, the rotary drive 44 may be a motor.

Further, the material shifting mechanism 40 further includes a guiding column 46, one end of the guiding column 46 is fixedly connected with the mounting panel 47, and the other end of the guiding column 46 is in sliding fit with the transfer seat 42, so that the guiding column 46 is in sliding fit with the transfer seat 42 to guide the movement of the transfer seat 42, further guide the movement of the material shifting member 43 along the axial direction of the unreeling shaft 23, and enable the material pushing action of the material shifting member 43 to be stable and reliable. Furthermore, the material poking shaft 45 can be in sliding fit with the mounting panel 47 so as to guide the movement of the transfer seat 42, and further guide the movement of the material poking piece 43 along the axial direction of the unwinding shaft 23, so that the material pushing action of the material poking piece 43 is stable and reliable.

Referring to fig. 1 to fig. 3, in the embodiment of the present invention, the unwinding device further includes a driving mechanism (not shown) for driving the connecting shaft 22 to rotate around its axis and move in the axial direction. The driving mechanism includes a movable driving member 61, a sliding base 62 and an unwinding driving member 63. The movable driving member 61 is mounted on the carrying seat 10, and the sliding seat 62 is movably connected to the carrying seat 10 along the axial direction of the connecting shaft 22 and is in driving connection with the movable driving member 61, so that the movable driving member 61 can drive the sliding seat 62 to move along the axial direction of the connecting shaft 22 relative to the carrying seat 10. The unwinding driving member 63 is mounted on the sliding base 62 and is in driving connection with the connecting shaft 22 to drive the connecting shaft 22 to rotate around its axis.

Therefore, when the unwinding shaft 23 needs to be axially abutted or separated from the material preparing shaft 21, the movable driving member 61 drives the sliding seat 62 to move relative to the bearing seat 10, so as to drive the unwinding driving member 63 and the connecting shaft 22 to axially move, and further drive the unwinding shaft 23 to axially move, so as to axially abut or separate the unwinding shaft 23 and the material preparing shaft 21. When the material roll needs to be unreeled, the unreeling driving member 63 can drive the connecting shaft 22 to rotate around the axis of the connecting shaft, so as to drive the unreeling shaft 23 to rotate around the axis of the connecting shaft, and further drive the material roll on the unreeling shaft 23 to rotate to unreel the output material belt. Alternatively, the movable drive 61 may be a pneumatic cylinder. The unwinding driving member 63 may be a motor.

Specifically, in the embodiment, the driving mechanism further includes a driving gear 631 and a driven gear 221, the driving gear 631 is mounted on an output shaft of the unwinding driving member 63, and the driven gear 221 is mounted on an end of the connecting shaft 22 far away from the unwinding shaft 23 and rotates synchronously with the connecting shaft 22. Thus, the driving gear 631 and the driven gear 221 are utilized to transmit the unwinding driving member 63 and the connecting shaft 22, that is, the output shaft of the unwinding driving member 63 can drive the driving gear 631 to rotate, so as to drive the driven gear 221 to rotate, and further drive the connecting shaft 22 to rotate around the axis thereof.

It should be noted that, of course, the driving gear 631 and the driven gear 221 are not limited to be directly engaged with each other, and in other embodiments, one or more transmission gears may be disposed between the driving gear 631 and the driven gear 221, as long as the unwinding can be achieved, and the present invention is not limited thereto.

In an embodiment, the carriage 10 has a first slide rail extending lengthwise along the axial direction of the connecting shaft 22, and the sliding seat 62 has a first slide block (not shown) slidably engaged with the first slide rail (not shown), so that the sliding seat 62 can move along the axial direction of the connecting shaft 22 relative to the carriage 10.

Specifically, in the embodiment, the unwinding device further includes a deviation rectifying mechanism 70, and the deviation rectifying mechanism 70 includes a base 71 and a deviation rectifying driving member 72. The carriage 10 is movably connected to the base 71 along the axial direction of the unwinding shaft 23, and the deviation correcting driving member 72 is used for driving the carriage 10 to move relative to the base 71 along the axial direction of the unwinding shaft 23. Therefore, when the material tape output by unwinding the material roll on the unwinding shaft 23 needs to be corrected, the deviation correcting driving member 72 drives the bearing seat 10 to move along the axial direction of the unwinding shaft 23 relative to the base 71, so as to drive the unwinding shaft 23 to move along the axial direction, that is, the deviation correction of the output material tape is realized.

Further, the base 71 has a second sliding rail 711 extending lengthwise along the axial direction of the unwinding shaft 23, and the carrying seat 10 has a second sliding block 11, and the second sliding block 11 is slidably engaged with the second sliding rail 711, so that the carrying seat 10 is movable along the axial direction of the unwinding shaft 23 relative to the base 71.

Further, the deviation correcting mechanism 70 further includes a lead screw 73 and a lead screw nut 74. The screw rod 73 is rotatably arranged on the bearing seat 10 around the axis thereof, and the axial direction of the screw rod 73 is parallel to the axial direction of the unwinding shaft 23. The lead screw nut 74 is threadedly coupled to the lead screw 73 and fixedly coupled to the base 71 such that the lead screw nut 74 is fixed relative to the base 71. The deviation correcting driving member 72 is mounted on the bearing seat 10 and is in driving connection with the screw rod 73 to drive the screw rod 73 to rotate around the axis thereof. Thus, when deviation correction is needed, the deviation correcting driving member 72 drives the screw rod 73 to rotate around the axis thereof, so as to drive the screw rod nut 74 to move along the axial direction of the screw rod 73, and the screw rod nut 74 is fixedly connected with the base 71, so as to drive the bearing seat 10 to move along the axial direction of the unreeling shaft 23 relative to the base 71. Alternatively, the offset drive 72 may employ a motor.

It should be noted that, of course, in other embodiments, the screw rod 73 can be rotatably connected to the base 71 around its own axis, and the deviation correcting driving member 72 is mounted on the base 71 and is in driving connection with the screw rod 73 to drive the screw rod 73 to rotate around its own axis. At this time, the lead screw nut 74 screwed on the lead screw 73 is fixedly connected with the carrying seat 10, so as to drive the carrying seat 10 to move along the lead screw 73 (i.e. move along the axial direction of the unreeling shaft 23) along with the lead screw nut 74 when the lead screw 73 rotates, as long as the carrying seat 10 can be driven to move along the axial direction of the unreeling shaft 23 relative to the base 71, which is not limited herein.

In the embodiment, an air passage is axially formed in the connecting shaft 22, and the air passage penetrates through one end of the connecting shaft 22 close to the unwinding shaft 23 to communicate with the shaft body 233 of the unwinding shaft 23, and is used for ventilating the first loading area 231 and the second loading area 232 of the unwinding shaft 23, so that the first loading area 231 inflates the material roll fixed on the first loading area 231, and the second loading area 232 inflates the air cylinder fixed on the second loading area 232.

Further, a rotary joint 64 is mounted on the slide 62, and the rotary joint 64 is connected with an external air source. The air passage penetrates through one end of the connecting shaft 22 far away from the unreeling shaft 23 and is connected with the rotary joint 64, so that air of an external air source can enter the air passage through the rotary joint 64 and then enter the unreeling shaft 23.

Based on the unreeling device, the utility model further provides a winding device which comprises the unreeling device in any one of the embodiments. Specifically, the winding device further comprises a winding device, the unwinding device is used for unwinding the output material belt to the winding device, and the winding device is used for winding the material belt to form the battery core.

It is understood that the winding device is well known in the art and therefore not described in detail herein.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an unwinding device which characterized in that includes:

a bearing seat;

2. The unwinding device as claimed in claim 1, wherein the unwinding shaft has a first loading area and a second loading area arranged along the axial direction, the first loading area is located at one side of the second loading area close to the material preparing shaft, and the first loading area is used for loading and tensioning the material roll pushed by the material pushing mechanism;

3. The unwinding device as claimed in claim 2, wherein the unwinding shaft comprises a shaft body, and a first charging sleeve and a second charging sleeve coaxially sleeved outside the shaft body, the shaft body is connected with the connecting shaft, the first charging sleeve and the shaft body rotate synchronously to form the first charging area, and the second charging sleeve is rotatable relative to the shaft body to form the second charging area.

4. The unwinding device of claim 2, wherein the material-poking mechanism comprises a material-poking driving member, a transfer seat and a material-poking member; the material shifting driving piece is installed on the bearing seat, and the material shifting piece is installed at the driving end of the material shifting driving piece through the transfer seat so as to be driven by the material shifting driving piece to move along the axial direction of the unreeling shaft.

5. The unwinding device as claimed in claim 4, wherein the material stirring mechanism further comprises a rotary driving member and a material stirring shaft, the rotary driving member is mounted on the transfer seat, one end of the material stirring shaft is in driving connection with the rotary driving member so that the rotary driving member can drive the material stirring shaft to rotate, and the other end of the material stirring shaft is connected with the material stirring member;

6. The unwinding device as claimed in claim 1, wherein a groove is formed in a circumferential surface of one end of the stock preparation shaft close to the unwinding shaft, the stock shaft mechanism further includes a tension assembly, the tension assembly includes a wedge block, a tension driving member and a push rod, the wedge block and the tension block are disposed in the groove, the tension block and the wedge block are in sliding fit, the tension driving member is mounted on the bearing seat and is in driving connection with one end of the push rod to drive the push rod to move in an axial direction of the stock preparation shaft, and the other end of the push rod is connected with the wedge block;

7. The unwinding device as claimed in claim 6, wherein the tension assembly further includes an elastic member abutting against the tension block and the stock preparation shaft for providing a pre-tension force to make the tension block have a movement tendency to retract into the groove.

8. The unwinding device of claim 1, further comprising a driving mechanism, wherein the driving mechanism comprises a movable driving member, a sliding base and an unwinding driving member;

9. The unwinding device as claimed in claim 8, further comprising a deviation correcting mechanism, wherein the deviation correcting mechanism includes a base and a deviation correcting driving member, the carrying seat is movably connected to the base along the axial direction of the unwinding shaft, and the deviation correcting driving member is configured to drive the carrying seat to move relative to the base along the axial direction of the unwinding shaft.

10. Winding plant characterized in that it comprises unwinding device according to any one of claims 1 to 9.