CN217768479U - Winding mechanism and winding device - Google Patents

Abstract

The utility model discloses a winding mechanism, which comprises a connecting shaft, a first bearing and a second bearing, wherein the first bearing and the second bearing are arranged on the connecting shaft in a penetrating way, a plurality of groups of winding needle assemblies are arranged between the first bearing and the second bearing in a penetrating way, the plurality of groups of winding needle assemblies are arranged on the circumference with the connecting shaft as the circle center in an equal angle, the winding needle assemblies are driven by a plurality of first driving assemblies to rotate around the axis of the winding needle assemblies, and annular guide blocks are sleeved outside the winding needle assemblies; the annular guide block is always connected with a corresponding puncture and extraction needle assembly and moves along the axial direction under the driving of the puncture and extraction needle assembly. The winding mechanism of the utility model has the advantages that the annular guide block is sleeved outside the winding needle assembly, so that the winding needle assembly can freely rotate and freely move axially; the threading and pulling needle assembly is always connected with the annular guide block, so that the threading and pulling needle assembly can work timely after the position of the winding needle assembly is changed, the time for the threading and pulling needle assembly to move to the winding needle assembly after the position is changed in place is saved, and the production efficiency is improved.

Description

Winding mechanism and winding device

Technical Field

The utility model relates to a lithium battery manufacturing equipment technical field especially relates to a winding mechanism and take-up device.

Background

The manufacturing of electric core in the lithium electricity industry needs to be through the winder with positive plate material area, first diaphragm material area, negative pole piece material area, second diaphragm material area coiling formation electric core in proper order. The working condition of the winding mechanism directly influences the production quality and the production efficiency of the battery cell. In order to improve the production efficiency, the existing winding mechanism is mostly provided with three stations, and three groups of winding needle assemblies respectively perform transposition work at a winding station, a rubberizing station and a blanking station. The penetration and extraction needle assembly drives a winding needle of the winding station to extend out to clamp the material belt, the material belt is sequentially wound to form an electric core, then the position is changed to the rubberizing station for rubberizing, then the position is changed to the discharging station, the penetration and extraction needle assembly drives the winding needle assembly to retreat, the winding needle is drawn out from the electric core, and the electric core is discharged.

However, in order to prevent the winding or the transposition of the winding needle from being affected, the penetration needle assembly and the winding needle assembly of most winding mechanisms are not always connected. After the winding mechanism is shifted to the right position, the needle penetrating and pulling assembly is contacted with the winding needle assembly to drive the winding needle to move axially. Due to the arrangement, the distance between the needle penetrating and pulling assembly and the needle winding assembly is far, the needle penetrating and pulling assembly is connected with the needle winding assembly only after the winding mechanism needs to be replaced in place, the needle winding is driven to axially move, and the working efficiency of the winding mechanism is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a winding mechanism and take-up device that coiling efficiency is high.

In order to achieve the purpose, the utility model provides a winding mechanism, which comprises a connecting shaft, a first bearing and a second bearing, wherein the first bearing and the second bearing are arranged on the connecting shaft in a penetrating way, a plurality of groups of winding needle assemblies are arranged between the first bearing and the second bearing in a penetrating way, the plurality of groups of winding needle assemblies are arranged at equal angles on the circumference with the connecting shaft as the circle center, the winding needle assemblies are driven by a plurality of first driving assemblies to rotate around the axes of the winding needle assemblies, and annular guide blocks are sleeved outside the winding needle assemblies; the annular guide block is always connected with a corresponding puncture and extraction needle assembly and moves along the axial direction under the driving of the puncture and extraction needle assembly.

The utility model discloses an in one embodiment, wear to pull out the needle subassembly and include the lead screw axle, slide and set up in the epaxial bearing frame of lead screw and the first slider that is connected with the bearing frame, the lead screw axle sets up between first bearing and second bearing to pass the second bearing and have second drive assembly through the coupling joint, first slider and annular guide block fixed connection drive and roll up needle subassembly axial displacement.

In an embodiment of the present invention, each of the needle penetrating and extracting assemblies further includes at least one guiding shaft disposed between the first bearing and the second bearing, and the guiding shaft passes through the first slider and is parallel to the connecting shaft.

The utility model discloses an in the embodiment, but roll up the needle subassembly including rolling up the needle handle, for rolling up the needle that needle handle axial displacement, it is connected and stretches out first bearing with first bearing and second bearing to roll up the needle handle, it is the cylinder casing to roll up the one end that the needle handle stretches out first bearing, and has an at least spout rolling up processing of needle handle surface, it sets up in the cylinder casing of rolling up the needle handle to roll up the needle, it is provided with the guide block of arranging in the spout to roll up the needle, it realizes axial displacement through guide block and spout to roll up the needle.

The utility model discloses an in one embodiment, the annular guide block cover is established at book needle handle surface, the interior periphery of annular guide block process have with guide block assorted annular spout, the guide block can slide in annular spout.

The utility model discloses an in the embodiment, the connecting axle all processes flutedly with the position corresponding with the tip of a plurality of book needle subassemblies, all be provided with the running roller in the recess.

In an embodiment of the present invention, the connecting shaft is provided with a guide rail at a position corresponding to the needle insertion assembly, and the bearing seat is slidably connected to the guide rail.

The utility model discloses an in an embodiment, winding mechanism still includes the rotatory third drive assembly of drive first bearing and second bearing, the third drive assembly include third rotating electrical machines, the driving gear that is connected with third rotating electrical machines's drive end and the driven gear who meshes with the driving gear mutually, driven gear and connecting axle fixed connection, third rotating electrical machines passes through driving gear, driven gear, connecting axle drive winding mechanism and rotates.

The utility model discloses an in one embodiment, winding mechanism sets up on a base, driven gear uses the connecting axle to be provided with a plurality of stoppers on the circumference in the centre of a circle for the first-class angle, all be equipped with the spacing groove on the stopper, the fixed coiling braking subassembly that is provided with of base, coiling braking subassembly includes by a driving piece driven cam, the cam is driven and can reciprocate and limit winding mechanism's rotation with spacing groove cooperation.

The utility model also discloses a take-up device, including a pair of foretell winding mechanism, it is a pair of winding mechanism passes through the connecting axle and connects jointly, and synchronous rotation is a pair of winding mechanism's the common centre gripping material area of needle is gone out to winding mechanism's book needle subassembly subtend.

In summary, the winding mechanism of the utility model has the advantages that the winding needle assembly can freely rotate and freely move axially by arranging the annular guide block outside the winding needle assembly; the needle penetrating and pulling assembly is always connected with the annular guide block, so that the needle penetrating and pulling assembly can work timely after the needle rolling assembly is transposed, the time for the needle penetrating and pulling assembly to move to the needle rolling assembly after the needle is transposed in place is saved, and the production efficiency is improved.

Drawings

Fig. 1 is a front view of the winding device of the present invention;

fig. 2 is a structural view of the winding mechanism of the present invention;

FIG. 3 is another perspective view of the winding mechanism of the present invention;

FIG. 4 is a structural diagram of the needle winding assembly of the present invention matching with the annular guide block;

FIG. 5 isbase:Sub>A cross-sectional view taken along section line A-A of FIG. 4;

FIG. 6 is a view of a set of needle winding assembly and needle threading assembly according to the present invention;

in the figure, 100, a winding mechanism; 110. a connecting shaft; 111. a groove; 112. a roller;

120. a first bearing; 130. a second bearing;

140. a needle winding assembly; 141. a first drive assembly; 142. a needle winding handle; 143. coiling a needle; 144. a chute; 145. a guide block;

150. puncturing and pulling the needle assembly; 151. a second drive assembly; 152. a screw shaft; 153. a bearing seat; 154. a first slider; 155. a guide shaft; 156. a guide rail; 157. a second slider;

160. an annular guide block; 161. an annular chute;

170. a third drive assembly; 171. a third rotating electrical machine; 172. a driving gear; 173. a driven gear; 174. a limiting block; 175. a limiting groove;

180. winding the brake assembly; 181. a cam;

200. a base;

300. a slip ring assembly.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not limited to the present invention.

The utility model discloses a take-up device is with convoluteing the material area as the example for the manufacturing of electric core, also can be other strips of coiling in other embodiments.

As shown in fig. 1, the winding device includes two sets of winding mechanisms 100 coaxially disposed, and both sets of winding mechanisms 100 are disposed on a connecting shaft 110 and can be driven by the connecting shaft 110 to rotate synchronously. The winding mechanism comprises three stations, and the connecting shaft 110 drives the winding mechanism 100 to switch the stations among the winding station, the rubberizing station and the blanking station. As shown in fig. 2, the winding mechanism 100 includes a third driving assembly 170 for driving the winding mechanism to rotate around the connecting shaft 110, the third driving assembly 170 is disposed on a base 200, and includes a third rotating electrical machine 171, a driving gear 172 connected to a driving end of the third rotating electrical machine 171, and a driven gear 173 engaged with the driving gear 172, the driven gear 173 is fixedly connected to the connecting shaft 110, and the third rotating electrical machine 171 drives two sets of winding mechanisms 100 to rotate synchronously through the driving gear 172, the driven gear 173, and the connecting shaft 110.

The two winding mechanisms 100 have the same structure, and as shown in fig. 2 and 3, take a winding mechanism 100 as an example: the winding mechanism 100 comprises a first bearing 120 and a second bearing 130, the first bearing 120 is close to the material belt, the second bearing 130 is far away from the material belt, and the connecting shaft 110 penetrates through the centers of the first bearing 120 and the second bearing 130 of the two groups of winding mechanisms 100. Three groups of needle coiling assemblies 140 and three groups of needle penetrating and pulling assemblies 150 are arranged on the circumference of the first bearing 120 and the second bearing 130 by taking the connecting shaft 110 as a circle center at equal angles, and the included angle between each two groups of needle coiling assemblies 140 and each two groups of needle penetrating and pulling assemblies 150 is 120 degrees. The three sets of needle rolling assemblies 140 and the three sets of needle penetrating and pulling assemblies 150 are disposed between the first bearing 120 and the second bearing 130, and the ends of the three sets of needle rolling assemblies 140 respectively protrude out of the first bearing 120 and the second bearing 130.

One end of each group of winding needle assemblies 140 extending out of the second bearing 130 is connected to a first driving assembly 141, and drives each group of winding needle assemblies 140 to rotate around its own axis, and the first driving assembly 141 is preferably a DD motor and directly drives the winding needle assemblies 140 to rotate. Each set of penetrating needle assemblies 150 is driven by a second drive assembly 151 to move the needle assemblies 140 axially.

The penetrating and pulling needle assemblies 150 of the two groups of winding mechanisms 100 drive the winding needle assemblies 140 to extend out at the winding station, and the material belt is clamped and wound together to form a battery cell; the winding needle assembly 140 is driven to retreat at the blanking station, and the battery core is released.

As shown in fig. 4 and 5, each set of needle winding assemblies 140 includes a needle winding handle 142, and a needle winding 143 axially movable with respect to the needle winding handle 142. One end of the needle winding handle 142 close to the winding needle 143 is a cylindrical shell, a pair of sliding grooves 144 are processed on the outer surface of the needle winding handle 142, the winding needle 143 is arranged in the cylindrical shell of the needle winding handle 142, the winding needle 143 is provided with a guide block 145 arranged in the sliding grooves 144, and the winding needle 143 realizes axial movement through the guide block 145 and the sliding grooves 144.

An annular guide block 160 is sleeved outside the needle winding assembly 140, an annular sliding groove 161 matched with the guide block 145 is formed in the inner circumferential surface of the annular guide block 160, the guide block 145 can slide in the annular sliding groove 161, and the needle winding assembly 140 can rotate freely in the annular guide block 160 under the driving of the first driving assembly 141.

As shown in fig. 6, the needle winding handles 142 of the needle winding assembly 140 are connected to the first bearing 120 and the second bearing 130, the needle winding handles 142 rotate under the driving of the first driving assembly 141, the penetration and extraction needle assemblies 150 are fixedly connected to the corresponding annular guide blocks 160, and the needle winding assembly 140 is driven to move axially by the annular guide blocks 160. The penetration needle assembly 150 includes a screw shaft 152, a bearing housing 153 slidably disposed on the screw shaft 152, and a first slider 154 connected to the bearing housing 153. The screw shaft 152 is disposed between the first bearing 120 and the second bearing 130, and is parallel to the connection shaft 110. The screw shaft 152 extends out of the second bearing 130 and is coupled to a second drive assembly 151, preferably a second rotary motor, the second drive assembly 151 being coupled to the second bearing. The second rotating electrical machine, the screw shaft 152, and the bearing seat 153 form a screw structure. The first slider 154 is fixedly connected to the annular guide block 160. The second rotating motor rotates to drive the bearing seat 153 to move through the screw shaft 152, so as to drive the first sliding block 154 to push the annular guide block 160 to move, and further push the winding needle 143 of the winding needle assembly 140 to move axially.

In order to stabilize the movement of the first slider 154, a guide shaft 155 and a guide rail 156 are further provided on the winding mechanism 100. Each first sliding block 154 is provided with a pair of guide shafts 155, each guide shaft 155 is parallel to the connecting shaft 110, and two ends of each guide shaft 155 are fixedly connected with the first bearing 120 and the second bearing 130 respectively. The connecting shaft 110 is provided with a guide rail 156 at a position corresponding to the penetrating and pulling needle assembly 150, the guide rail 156 is parallel to the connecting shaft 110, and the bearing seat 153 is provided with a second sliding block 157 connected with the guide rail 156. The arrangement of the guide shaft 155 and the guide rail 156 makes the axial movement of the winding needle assembly 140 more stable, and avoids the shaking of the axial movement of the winding needle assembly 140.

The driven gear 173 is attached to the second bearing 130, each group of winding needle assemblies 140 extends out of the driven gear, and a photoelectric sensor and an encoder are arranged at the end positions of the winding needle assemblies 140 and used for recording the movement of each winding needle assembly 140 and feeding back the position information to the controller. The use of a combination of a photosensor and an encoder for position recording is well known to those skilled in the art and will not be described in detail here.

The connecting shaft 110 is provided with grooves 111 at positions corresponding to the three groups of winding needles 143, and rollers 112 are arranged in the grooves 111. After the cell is wound, the cell is clamped through the roller 112 and the winding needle 143, so that the cell is prevented from being loosened in the process of changing the position of the winding station to the rubberizing station.

Referring again to fig. 1, the base 200 is further provided with a slip ring assembly 300, which is respectively connected to the first driving assembly 141, each second driving assembly 151, the third driving assembly 170, the photosensor and the encoder, so as to avoid the problem of winding of the wires when the winding mechanism 100 rotates. Applications of the slip ring assembly 300 are well known to those skilled in the art and will not be described in detail herein.

Also disposed on the base 200 is a wrap brake assembly 180. As shown in fig. 2, three limit blocks 174 are disposed on the driven gear 173 at equal angles on the circumference of the connecting shaft 110, the included angle between every two limit blocks 174 is 120 degrees, and each limit block 174 is provided with a limit groove 175 matched with the winding brake assembly 180. The wrap brake assembly 180 is a member that moves up and down under the drive of an actuator. When the winding mechanism 100 needs to keep stopping rotating, the cam 181 of the winding brake assembly 180 is controlled to extend upwards out of the surface of the base 200 and be inserted into the limiting groove 175 of the limiting block 174 to position the winding mechanism 100, so that the winding mechanism 100 can be prevented from shaking integrally when the winding needle assemblies 140 work at respective stations; when the winding mechanism 100 drives the winding needle assembly 140 to change positions, the cam 181 of the winding brake assembly 180 descends, and the winding brake assembly 180 is prevented from interfering with the winding mechanism 100. When each stop block 174 is engaged with the cam 181, the three sets of needle winding assemblies 140 are located at three stations.

In the embodiment, three sets of winding needle assemblies 140 are provided in the winding mechanism 100, in other embodiments, the number of winding needle assemblies 140 may also be provided as two sets, four sets, and the like, and the number of penetrating and pulling needle assemblies 150 and the number of limiting blocks 174 also vary according to the number of winding needle assemblies 140 in the embodiment.

In this embodiment, the working process of the winding device is as follows:

firstly, a winding needle of a winding station is output to clamp a material belt: the cam 181 of the winding brake assembly 180 is controlled to protrude upward from the surface of the base 200 and to be inserted into the stopper groove 175. The second driving assemblies 151 of the two sets of coaxially arranged winding stations drive the first sliding blocks 154 of the penetrating and pulling needle assembly 150 to move along the guide shafts 155 and the guide rails 156, so as to push the annular guide blocks 160 to move, the annular guide blocks 160 push the guide blocks 145 to move along the sliding grooves 144 through the annular sliding grooves 161 and the guide blocks 145, so as to drive the winding needles 143 to extend, and the winding needles 143 of the two sets of winding mechanisms 100 extend simultaneously to clamp the material belt.

Then, winding the winding needle of the winding station to form a battery core: the two groups of first driving assemblies 141 located at the winding station work simultaneously to drive the winding needle handle 142 of the winding needle assembly 140 to rotate, the winding needle handle 142 drives the winding needle 143 to rotate through the chute 144 and the guide block 145, the encoder records the number of rotating turns of the winding needle assembly 140 through the photoelectric sensor, and the encoder stops working after the rotating turns reach the designated number of turns.

Subsequently, the cell of the winding station is transposed to the rubberizing station for rubberizing: the cam 181 of the winding brake assembly 180 is controlled to lower to avoid interfering with the rotational indexing of the winding mechanism 100. The third rotating electric machine 171 drives the winding mechanism 100 to rotate and shift positions through the driving gear 172, the driven gear 173, and the connecting shaft 110. After the winding mechanism 100 is indexed, the cam 181 of the winding brake assembly 180 is controlled to extend upward out of the surface of the base 200 and to be inserted into the limiting groove 175, so as to position the winding mechanism again. The separator material tape is cut off by a cutter mechanism (not shown), and the battery cell is rubberized at a rubberizing station.

Finally, the battery core of the rubberizing station is changed to the blanking station for blanking: the cam 181 of the winding brake assembly 180 is controlled to descend. The third driving assembly 170 operates to control the winding mechanism 100 to rotate and shift positions. After the winding mechanism 100 is indexed, the cam 181 of the winding brake assembly 180 is controlled to extend upward out of the surface of the base 200 and to be inserted into the limiting groove 175, so as to position the winding mechanism again. The battery core is conveyed to a blanking station, two groups of second driving assemblies 151 located at the blanking station drive the first sliding blocks 154 of the penetrating and pulling needle assemblies 150 to move reversely along the guide shafts 155 and the guide rails 156, the winding needles 143 are directly driven to be drawn out of the battery core, and the manipulator blanks the battery core.

The multiple groups of winding needle assemblies 140 are switched among the winding station, the rubberizing station and the discharging station in a circulating and reciprocating manner, so that the continuous production of the battery cell can be realized.

The winding needle assembly 140 of the winding device of the present embodiment is disposed opposite to the needle-out, and therefore, two sets of winding mechanisms 100 are provided; in other embodiments, the material tape may be clamped by the same-direction needle discharging, and a set of winding mechanism 100 is provided, where the winding mechanism 100 has substantially the same structure as that of the present embodiment, and only the structure of the needle winding assembly 140 is slightly different, which is not described herein again.

To sum up, the utility model discloses a winding mechanism is fixed through will wearing to pull out needle subassembly 150 and book needle subassembly 140, neither can influence the free motion of rolling up needle subassembly 140 and improved the production beat again, improves production efficiency.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims (10)

1. A winding mechanism comprises a connecting shaft, a first bearing and a second bearing which are arranged on the connecting shaft in a penetrating mode, a plurality of groups of winding needle assemblies are arranged between the first bearing and the second bearing in a penetrating mode, the plurality of groups of winding needle assemblies are arranged on the circumference with the connecting shaft as the circle center at equal angles, the winding needle assemblies are driven by a plurality of first driving assemblies to rotate around the axis of the winding needle assemblies, and the winding mechanism is characterized in that annular guide blocks are sleeved outside the winding needle assemblies; the annular guide block is always connected with a corresponding puncture and extraction needle assembly and moves along the axial direction under the driving of the puncture and extraction needle assembly.

2. The winding mechanism according to claim 1, wherein the pull-through needle assembly comprises a screw shaft, a bearing seat slidably disposed on the screw shaft, and a first slider connected to the bearing seat, the screw shaft is disposed between the first bearing and the second bearing, and is connected to a second driving assembly through the second bearing via a coupling, and the first slider is fixedly connected to the annular guide block to drive the winding needle assembly to move axially.

3. The winding mechanism of claim 2, wherein each of the pull-through needle assemblies further comprises at least one guide shaft disposed between the first bearing and the second bearing, the guide shaft passing through the first slider and being parallel to the connecting shaft.

4. The winding mechanism according to claim 1, wherein the winding needle assembly comprises a winding needle handle and a winding needle axially movable relative to the winding needle handle, the winding needle handle is connected with the first bearing and the second bearing and extends out of the first bearing, one end of the winding needle handle extending out of the first bearing is a cylindrical shell, at least one sliding groove is formed in the outer surface of the winding needle handle, the winding needle is arranged in the cylindrical shell of the winding needle handle, the winding needle is provided with a guide block arranged in the sliding groove, and the winding needle axially moves through the guide block and the sliding groove.

5. The winding mechanism according to claim 4, wherein the annular guide block is sleeved on the outer surface of the winding needle handle, an annular sliding groove matched with the guide block is formed in the inner circumferential surface of the annular guide block, and the guide block can slide in the annular sliding groove.

6. The winding mechanism according to claim 1, wherein grooves are formed in positions of the connecting shaft corresponding to the ends of the plurality of winding pin assemblies, and rollers are arranged in the grooves.

7. The winding mechanism according to claim 3, wherein the connecting shaft is provided with a guide rail at a position corresponding to the pull-through needle assembly, and the bearing seat is slidably connected with the guide rail.

8. The winding mechanism of claim 1 further comprising a third drive assembly for driving the first bearing and the second bearing to rotate, the third drive assembly comprising a third rotary motor, a drive gear coupled to a drive end of the third rotary motor, and a driven gear in meshing engagement with the drive gear, the driven gear being fixedly coupled to the coupling shaft, the third rotary motor driving the winding mechanism to rotate via the drive gear, the driven gear, and the coupling shaft.

9. The winding mechanism according to claim 8, wherein the winding mechanism is disposed on a base, the driven gear has a plurality of stoppers disposed at equal angles on a circumference centered on the connecting shaft, the stoppers each have a stopper groove, the base is fixedly disposed with a winding brake assembly, the winding brake assembly includes a cam driven by a driving member, the cam is driven to move up and down to cooperate with the stopper groove to restrict rotation of the winding mechanism.

10. A winding device comprising a pair of winding mechanisms according to any one of claims 1 to 9, the pair of winding mechanisms being connected together by a connecting shaft for synchronous rotation, the winding needle assemblies of the pair of winding mechanisms being arranged to grip the strip of material together against the dispensing needles.

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