WO2024255445A1 - 卷绕机构及卷绕设备 - Google Patents

卷绕机构及卷绕设备 Download PDF

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Publication number
WO2024255445A1
WO2024255445A1 PCT/CN2024/089147 CN2024089147W WO2024255445A1 WO 2024255445 A1 WO2024255445 A1 WO 2024255445A1 CN 2024089147 W CN2024089147 W CN 2024089147W WO 2024255445 A1 WO2024255445 A1 WO 2024255445A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
needle
pushing
material strip
cutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/089147
Other languages
English (en)
French (fr)
Inventor
王奉杰
赵留杰
朱爱武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Lead Intelligent Equipment Co Ltd
Original Assignee
Wuxi Lead Intelligent Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Lead Intelligent Equipment Co Ltd filed Critical Wuxi Lead Intelligent Equipment Co Ltd
Priority to EP24822400.8A priority Critical patent/EP4730473A1/en
Publication of WO2024255445A1 publication Critical patent/WO2024255445A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H01M10/0409—Machines for assembling batteries for cells with wound electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application relates to the technical field of winding equipment, and in particular to a winding mechanism and a winding equipment.
  • Winding equipment is a device used to process the core of a battery.
  • Winding equipment usually includes a winding needle, which has an open slit.
  • When processing the core through the winding equipment it is necessary to first complete the needle insertion action (inserting the positive and negative electrode sheets and separators through the opening into the slit of the winding needle), and then start to roll up the core.
  • the present application discloses a winding mechanism and a winding device, which can make the winding device more efficient in processing winding cores.
  • a winding mechanism comprising:
  • a winding needle comprising a first half needle and a second half needle, the first half needle and the second half needle being arranged opposite to each other to form a gap;
  • a cutting assembly wherein the cutting assembly comprises a cutting drive, a pusher and a cutter, wherein the pusher and the cutter are both arranged on the cutting drive, and the cutting drive is used to drive the pusher and the cutter to move in a direction close to the winding needle so as to cut the material strip by the cutter, and the pusher is used to push the free end of the cut material strip into the gap;
  • a fixing member is used to fix the free end pushed into the gap in the gap.
  • the cutting drive member can simultaneously drive the pushing member to move in the direction close to the winding needle when driving the cutter to move in the positive direction of the axis in the direction diagram close to the winding needle to cut the material strip, so that the pushing member can just push the free end of the cut material strip into the gap, thereby realizing the needle insertion action.
  • the above-mentioned material strip can be understood as the positive and negative electrode sheets and diaphragms of the core.
  • the pushing member can be synchronously driven to push the free ends of the cut positive and negative electrode sheets and diaphragms into the gap, thereby realizing the action of the core needle insertion.
  • the winding mechanism does not need to perform auxiliary actions (such as the winding needle retracting in the winding needle seat and extending from the winding needle seat). Therefore, when the winding mechanism is used in the winding equipment, it can improve the efficiency of the winding equipment in processing the core to a certain extent, thereby making the efficiency of the winding equipment in processing the core higher.
  • the cutting assembly further comprises:
  • a pushing drive member wherein the pushing drive member is arranged on the cutting drive member, and the pushing member is arranged on the pushing drive member.
  • the cutting drive member is used to drive the pushing drive member to move in the direction close to the winding needle, so as to drive the pushing member to move in the direction close to the winding needle.
  • the pushing drive member is used to drive the pushing member to push the free end of the cut material strip into the gap.
  • the pushing member is a pushing plate
  • the pushing plate has a pushing end for abutting against the material strip to push the free end into the gap
  • the pushing end has a chamfer
  • the pushing end of the pushing member By providing a chamfer to the pushing end of the pushing member for contacting with the material strip, the pushing end can be made more rounded, thereby avoiding scratching of the material strip.
  • the fixing member is a clamping member having a clamping end, and the clamping end is used to move toward or away from the first half needle to clamp or release the free end between the clamping end and the first half needle.
  • the free end By moving the clamping end toward the first half needle, the free end can be clamped between the clamping end and the first half needle after being pushed into the gap, thus preventing the free end of the material strip pushed into the gap from sliding out of the gap again.
  • the clamping member is a cylinder
  • the clamping end is the free end of the piston rod of the cylinder
  • the multiple cylinders are arranged on the second half needle at intervals along the axial direction of the winding needle.
  • the free ends of the piston rods of the multiple cylinders can be The free end can be clamped between the free ends of multiple piston rods and the first half needle at the same time, so that the free end of the material strip can be more stably fixed in the gap, thereby better preventing the free end of the material strip pushed into the gap from sliding out of the gap again.
  • a clearance opening is provided on the pushing member, and the clearance opening passes through the pushing member along the movement direction of the clamping end, so that the clamping end passes through the clearance opening to clamp the free end between the clamping end and the first half needle.
  • the avoidance opening allows the clamping end to pass through the pushing member, thereby avoiding interference between the pushing member and the clamping member.
  • the first half needle is provided with an adsorption hole, and the adsorption hole is used to adsorb the material tape pushed into the gap to the first half needle.
  • the purpose of adsorbing the material strip pushed into the gap to the first half needle can be achieved.
  • the implementation method is very simple, therefore, the structure of the entire winding mechanism can be simplified to a certain extent.
  • the winding mechanism further comprises:
  • a tensioning assembly is used to tighten the material strip before the cutter cuts the material strip.
  • the tensioning component can tighten the material belt before the cutter cuts the material belt, the cutter can cut the material belt more conveniently, avoiding the situation where the material belt is loose when cutting the material belt, resulting in the cutter being unable to cut the material belt.
  • the tightening assembly comprises:
  • a plurality of rollers are provided, wherein the plurality of rollers are located on both sides of the cutter along the circumference of the winding needle, and at least one of the plurality of rollers is used to move toward the direction close to the winding needle so as to bring the material strip into contact with the outer periphery of the winding needle to tighten the material strip, wherein at least one of the rollers that abuts against the outer periphery of the winding needle is located upstream of the cutter.
  • the winding needle and the multiple rollers can form multiple structures similar to clamps, thereby achieving the purpose of fixing the material strip. That is, the purpose of fixing the material strip by the multiple rollers can be achieved by moving the multiple rollers toward the direction close to the winding needle, without the need to specially design clamps. Therefore, the structural design is simple and ingenious. In addition, since the multiple rollers act on the same winding needle together, the entire winding mechanism can be made relatively compact to a certain extent.
  • each of the rollers is connected to the cutting drive, and the cutting drive is used to drive the cutter and each of the rollers to move synchronously toward the winding needle, so that before the cutter cuts the material strip, The material strip is tightened by the rollers.
  • the tensioning assembly and the cutter can share the same cutting drive, which can save costs and make the entire winding mechanism more compact.
  • the roller is a unidirectional rotating roller, the rollers located on both sides of the cutter rotate in opposite directions, and the rotation tangent direction of each roller at the point where it abuts against the winding needle is away from the cutter.
  • each of the rollers is elastically connected to the cutting drive member.
  • At least one of the first half needle and the second half needle is slidably arranged in a direction close to or away from the other to adjust the width of the gap.
  • the width of the gap can be adjusted very flexibly.
  • the width of the gap can be adjusted very flexibly according to the thickness of the material strip, so that the gap can be adapted to material strips of different thicknesses.
  • the winding mechanism when used in a winding device to process the core of a battery, after the core is wound, at least one of the first half needle and the second half needle can slide in a direction close to the other, so that the gap can be narrowed, and then the contact between the inner periphery of the core and the outer periphery of the winding needle can be made less tight, so that the core can be easily removed from the winding needle.
  • the present application discloses a winding device, the winding device having a winding station and a material unloading station, the winding device comprising:
  • a turret the turret being rotatably arranged
  • winding mechanism described in any one of the first aspects above, wherein the number of the winding needles is at least two, and the plurality of winding needles are rotatably disposed on the turret;
  • the cutting assembly is arranged corresponding to the winding station, the unwinding mechanism is used to convey the material tape to the winding needle located at the winding station, the cutting drive member is used to drive the pushing member and the cutter to synchronously move in the direction close to the winding needle located at the winding station, so as to cut the material tape by the cutter, the pushing member is used to push the free end of the cut material tape into the gap, the winding needle of the winding station is used to wind the material tape around the outer periphery of the winding needle when rotating, and the turret is used to rotate the winding needle located at the winding station to the unloading station and the winding needle located at the unloading station to the winding station when rotating.
  • the winding mechanism does not need to perform auxiliary actions such as the winding needle retracting in the winding needle seat and extending from the winding needle seat when performing the needle insertion action, when the winding mechanism is used in the winding device, the winding efficiency can be improved to a certain extent.
  • the efficiency of the winding equipment in processing the core can thereby make the efficiency of the winding equipment in processing the core higher.
  • the cutting drive member can drive the pushing member to move in the direction close to the winding needle when driving the cutter to move in the positive direction of the axis in the direction diagram close to the winding needle to cut the material strip, so that the pushing member can push the free end of the cut material strip into the gap.
  • the free end pushed into the gap can be fixed in the gap by the fixing member, so as to prevent the free end of the material strip pushed into the gap from sliding out of the gap again. At this point, the pin insertion action is realized.
  • the above-mentioned material strip can be understood as the positive and negative electrode sheets and diaphragms of the core.
  • the pushing member can be driven to push the free ends of the cut positive and negative electrode sheets and diaphragms into the gap, thereby realizing the action of inserting the core needle.
  • the winding mechanism does not need to perform auxiliary actions (such as the winding needle retracting in the winding needle seat and extending from the winding needle seat). Therefore, when the winding mechanism is used in the winding equipment, it can improve the efficiency of the winding equipment in processing the core to a certain extent, thereby making the efficiency of the winding equipment in processing the core higher.
  • FIG1 is a schematic diagram of the structure of a winding mechanism provided in an embodiment of the present application (the free end is not pushed into the gap);
  • Fig. 2 is a schematic diagram of the structure of the winding mechanism in Fig. 1 in another state (the free end is pushed into the gap);
  • FIG3 is a positional relationship diagram between the second half needle and the pusher provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of the structure of another winding mechanism provided in an embodiment of the present application (the free end is not pushed into the gap);
  • FIG5 is a schematic structural diagram of the winding mechanism in FIG4 in another state (the roller abuts against the winding needle);
  • the terms “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inner”, “outer”, “middle”, “vertical”, “horizontal”, “lateral”, “longitudinal” and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
  • the terms “installed”, “set”, “provided with”, “connected”, and “connected” should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components.
  • installed can be a fixed connection, a detachable connection, or an integral structure
  • it can be a mechanical connection, or an electrical connection
  • it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components.
  • the specific meanings of the above terms in this application can be understood according to specific circumstances.
  • FIG1 is a schematic diagram of the structure of a winding mechanism shown in an embodiment of the present application (the free end is not pushed into the gap), and FIG2 is a schematic diagram of the structure of the winding mechanism in FIG1 in another state (the free end is pushed into the gap).
  • the winding mechanism includes a winding needle 1, a cutting assembly 2, and a fixing member 3.
  • the winding needle 1 includes a first half needle 11 and a second half needle 12, and the first half needle 11 and the second half needle 12 are arranged relative to each other to form a gap 13.
  • the cutting assembly 2 includes a cutting drive 21, a pusher 22, and a cutter 23, and the pusher 22 and the cutter 23 are both arranged on the cutting drive 21.
  • the cutting drive 21 is used to drive the pusher 22 and the cutter 23 to move in a direction close to the winding needle 1 (the positive direction of the X axis in FIG. 1 ) so as to cut the material strip A through the cutter 23.
  • the pusher 22 is used to push the free end B of the cut material strip A into the gap 13
  • the fixing member 3 is used to fix the free end B pushed into the gap 13 in the gap 13.
  • the cutting drive member 21 can drive the pushing member 22 to move in the direction close to the winding needle 1 (the positive direction of the X-axis in Figure 1) when driving the cutter 23 to cut the material strip A.
  • the pushing member 22 can push the free end B of the cut material strip A into the gap 13.
  • the free end B pushed into the gap 13 can be fixed in the gap 13 by the fixing member 3, so that the free end B of the material strip A pushed into the gap 13 can be prevented from sliding out of the gap 13 again.
  • the pin insertion action is realized.
  • the above-mentioned material strip can be understood as the positive and negative electrode sheets and diaphragms of the core.
  • the pushing member 22 can be driven to push the free ends B of the cut positive and negative electrode sheets and diaphragms into the gap 13, thereby realizing the action of inserting the core needle.
  • the above-mentioned cutter 23 cutting the material strip A and the pusher 22 pushing the free end B into the slit 13 can be driven by the same cutting drive 21.
  • the cutting drive 21 first cuts the material strip A through the cutter 23 in the process of driving the pusher 22 and the cutter 23 to move toward the direction close to the winding needle 1.
  • the pusher 22 pushes the free end B of the cut material strip A into the slit 13.
  • the cutter 23 cutting off the material strip A and the pusher 22 pushing the free end B into the gap 13 can be achieved by driving different drive members.
  • the cutting assembly 2 also includes: a pushing drive member 24, the pushing drive member 24 is arranged on the cutting drive member 21, and the pushing member 22 is arranged on the pushing drive member 24.
  • the cutting drive member 21 is used to drive the pushing drive member 24 to move toward the direction close to the winding needle 1, so as to drive the pushing drive member 22 to move toward the direction close to the winding needle 1, and the pushing drive member 24 is used to drive the pushing member 22 to push the free end B of the cut material strip A into the gap 13.
  • the above-mentioned material strip is understood as the positive and negative electrode sheets and separators of the core, which is only a possible understanding of the material strip when the winding mechanism is used in the scenario of processing the battery core.
  • the above-mentioned material strip can also be understood as one or more of the positive and negative electrode sheets and separators, etc., and the embodiment of the present application does not limit this.
  • the cutting drive member 21 may be a cylinder or any component that can drive the pusher 22 and the cutter 23 to move synchronously toward the winding needle 1.
  • the cutting drive member 21 may be an electric cylinder or a lead screw mechanism, etc.
  • the embodiment of the present application does not limit the cutting drive member 21.
  • the pushing drive member 24 may be similar to the cutting drive member 21, and the embodiment of the present application will not be described in detail.
  • the pushing end 221 of the pushing member 22 By providing the pushing end 221 of the pushing member 22 for contacting the material strip A with a chamfer 2211 , the pushing end 221 can be made relatively rounded, thereby avoiding scratching of the material strip A.
  • the chamfer 2211 may be a rounded corner or a right angle, etc., which is not limited in the embodiment of the present application.
  • the free end B By moving the clamping end 31 toward the first half needle 11, the free end B can be clamped between the clamping end 31 and the first half needle 11 after being pushed into the gap 13, so that the material pushed into the gap 13 can be prevented from being The situation occurs that the free end B of the belt A slides out of the slot 13 again.
  • the fixing member 3 is a clamping member, since the free end B can be clamped or loosened between the clamping end 31 and the first half needle 11 through the clamping end 31 of the clamping member, the first half needle 11 is fully utilized as a partial structure for clamping the free end B.
  • the implementation method is clever, and the size of the fixing member 3 can be made compact to a certain extent.
  • the clamping member can be understood as a cylinder, and when the clamping member is understood as a cylinder, the clamping end 31 can be understood as the free end of the piston rod of the cylinder.
  • the clamping member can also be an electric cylinder, etc., which is not limited in the present embodiment.
  • the clamping member may be disposed on the second half needle 12 .
  • the clamping member may also be disposed at other positions, which is not limited in the embodiments of the present application.
  • the multiple clamping members are arranged at intervals on the second half needle 12 along the axial direction of the winding needle 1 (Z-axis direction in FIG. 3 ).
  • the clamping ends 31 of the multiple clamping members can simultaneously clamp the free end B between the multiple clamping ends 31 and the first half needle 11, so that the free end B can be more stably fixed in the gap 13, thereby better preventing the free end B of the material strip A pushed into the gap 13 from sliding out of the gap 13 again.
  • the number of the clamping members can be four or five, etc., and the embodiment of the present application does not limit the number of the clamping members. Of course, the number of the clamping members can also be one, and the embodiment of the present application does not limit this.
  • an avoidance opening 222 is provided on the pushing member 22, and the avoidance opening 222 passes through the pushing member 22 along the movement direction of the clamping end 31 (the Y-axis direction in FIG. 3 ), so that the clamping end 31 can pass through the avoidance opening 222 to clamp the free end B between the clamping end 31 and the first half needle 11.
  • the avoidance opening 222 allows the clamping end 31 to pass through the pushing member 22, thereby avoiding interference between the pushing member 22 and the clamping member.
  • the shape of the avoidance opening 222 can be U-shaped.
  • the avoidance opening 222 can pass through the pushing end 221 of the pushing member 22 along the movement direction of the pushing member 22 (X-axis direction in Figure 2), and then the avoidance opening 222 can have an opening along the movement direction of the pushing member 22, thereby better avoiding interference between the pushing member 22 and the clamping member during the movement.
  • the avoidance opening 222 may also be in other possible shapes, for example, the avoidance opening 222 may also be in a circular or triangular shape, etc., and the embodiment of the present application is not limited to this.
  • an adsorption hole 121 (not shown in the figure) is provided on the first half needle 11, and the adsorption hole 121 is used to adsorb the material strip A pushed into the gap 13 to the first half needle 11.
  • the purpose of adsorbing the material strip A pushed into the gap 13 to the first half needle 11 can be achieved.
  • the implementation method is very simple, and therefore, the structure of the entire winding mechanism can be simplified to a certain extent.
  • the number of the adsorption holes 121 may be multiple, and the shape may be circular or any possible shape.
  • the embodiment of the present application does not limit the number and shape of the adsorption holes 121.
  • the winding mechanism further includes: a tightening assembly 4 , which is used to tighten the material strip A before the cutter 23 cuts the material strip A.
  • the cutter 23 can cut the material strip A more conveniently, avoiding the situation where the material strip A is loose when cutting the material strip A, resulting in the cutter 23 being unable to cut the material strip A.
  • the tensioning component 4 includes: a plurality of rollers 41, and the plurality of rollers 41 are located on both sides of the cutter 23 along the circumference of the winding needle 1. At least one of the plurality of rollers 41 is used to move in a direction close to the winding needle 1 (the positive direction of the X-axis in Figure 5) to bring the material strip A into contact with the outer periphery of the winding needle 1 to tighten the material strip A. At least one roller 41 that abuts against the outer periphery of the winding needle 1 is located upstream of the cutter 23.
  • the multiple rollers 41 When at least one of the multiple rollers 41 moves toward the direction close to the winding needle 1, the material strip A can be brought into contact with the outer circumference of the winding needle 1. Therefore, the material strip A will be clamped between the roller 41 and the winding needle 1, thereby playing a role in fixing the material strip A.
  • the multiple rollers 41 since the multiple rollers 41 are located on both sides of the cutter 23 along the circumference of the winding needle 1, the multiple rollers 41 can fix the material strip A on both sides of the cutter 23 along the circumference of the winding needle 1, thereby achieving the purpose of tightening the material strip A.
  • the winding needle 1 and the multiple rollers 41 can form multiple structures similar to clamps, thereby achieving the purpose of fixing the material strip A. That is, the purpose of fixing the material strip A by the multiple rollers 41 can be achieved by moving the multiple rollers 41 toward the direction close to the winding needle 1, without the need to specially design clamps. Therefore, the structural design is simple and ingenious. In addition, since the multiple rollers 41 act on the same winding needle 1 together, the entire winding mechanism can be made relatively compact to a certain extent.
  • the upstream of the cutter 23 mentioned above means that when the winding mechanism is used in a winding device, and the winding device includes an unwinding mechanism 10 for conveying the material tape to the winding needle 1, the side of the cutter 23 close to the unwinding mechanism 10 is the upstream of the cutter 23.
  • the number of the rollers 41 may be two or three, etc., as long as the rollers 41 are located on both sides of the cutter 23 along the circumference of the winding needle 1.
  • the embodiment of the present application does not limit the number of the rollers 41.
  • the tensioning component 4 includes: a plurality of clamps, and the plurality of clamps are located on both sides of the cutter 23 along the circumference of the winding needle 1, and each clamp is used to clamp the material strip A. In this way, when the clamps clamp the material strip A on both sides of the cutter 23 along the circumference of the winding needle 1, the purpose of tightening the material strip A can also be achieved. It is sufficient to be able to achieve the purpose of tightening the material strip A.
  • the embodiment of the present application does not limit the specific implementation method of the tensioning component 4.
  • each roller 41 is connected to a cutting drive 21 , and the cutting drive 21 is used to drive the cutter 23 and the roller 41 to move synchronously toward the winding needle 1 , so as to tighten the material strip A through the roller 41 before the cutter 23 cuts the material strip A.
  • the tensioning assembly 4 and the cutter 23 can share the same cutting drive 21 , which can save costs and make the entire winding mechanism more compact.
  • the cutting drive 21 drives the cutter 23 and the roller 41 to move synchronously toward the winding needle 1
  • the material strip A can be cut by the cutter 23 and tightened by the roller 41 at the same time, so that the work of tightening the material strip A and the work of cutting the material strip A are performed simultaneously, thus further improving the processing efficiency of the winding mechanism.
  • the efficiency of the winding equipment in processing the winding core can be further improved.
  • the roller 41 is a one-way rotating roller, and the rollers 41 on both sides of the cutter 23 rotate in opposite directions, and the rotation tangent direction F of each roller 41 at the contact point with the winding needle 1 is away from the cutter 23.
  • the roller 41 can prevent the material strip A from sliding toward the cutter 23 during the process of the cutter 23 cutting the material strip A, so that the material strip A is always in a taut state, thus facilitating the cutting of the material strip A by the cutter 23.
  • each roller 41 is elastically connected to the cutting drive member 21.
  • each roller 41 can move toward the direction close to the winding needle 1.
  • the contact between the roller 41 and the outer periphery of the winding needle 1 is elastic contact, thereby avoiding a violent collision between the roller 41 and the outer periphery of the winding needle 1.
  • the roller 41 may be elastically connected to the cutting drive member 21 via a spring 42 , or may be elastically connected to the cutting drive member 21 via other possible elastic elements, which is not limited in the embodiment of the present application.
  • At least one of the first half needle 11 and the second half needle 12 is slidably disposed in a direction close to or away from the other to adjust the width of the gap 13 .
  • the width of the gap 13 can be adjusted very flexibly.
  • the width of the gap 13 can be adjusted very flexibly according to the thickness of the material strip A, so that the gap 13 can adapt to the material strip A of different thicknesses.
  • the winding mechanism when used in a winding device to process the winding core of the battery, after the winding of the core is completed, at least one of the first half needle 11 and the second half needle 12 can slide in a direction close to the other, so that the gap 13 can be narrowed, and then the contact between the inner periphery of the core and the outer periphery of the winding needle can be made less tight, so that the core can be easily removed from the winding needle.
  • FIG. 6 is a schematic structural diagram of a winding device according to an embodiment of the present application.
  • the winding device has a winding station W1 and a material unloading station W2 , and the winding device includes: an unwinding mechanism 10 , a turret 20 and a winding mechanism 30 .
  • the turret 20 is rotatably arranged, the number of winding needles 1 is at least two, and multiple winding needles 1 can be rotatably arranged on the turret 20.
  • the cutting assembly 2 is arranged corresponding to the winding station W1.
  • the unwinding mechanism 10 is used to convey the material strip A to the winding needle 1 located at the winding station W1.
  • the cutting drive member 21 is used to drive the pushing member 22 and the cutter 23 to move toward the direction close to the winding needle 1 located at the winding station W1, so as to cut the material strip A through the cutter 23.
  • the pushing member 22 is used to push the free end B of the cut material strip A into the gap 13.
  • the winding needle 1 of the winding station W1 is used to wind the material strip A around the outer periphery of the winding needle 1 when rotating.
  • the turret 20 is used to rotate the winding needle 1 located at the winding station W1 to the unloading station W2, and rotate the winding needle 1 located at the unloading station W2 to the winding station W1 when rotating.
  • the structure of the winding mechanism 30 can be the same as the structure of any winding mechanism 30 in the above-mentioned embodiment 1, and can bring the same or similar beneficial effects.
  • the material strip A when the winding device processes the battery core, first, the material strip A can be conveyed to the winding needle 1 located at the winding station W1 through the unwinding mechanism 10, and then, the pushing member 22 and the cutter 23 can be driven by the cutting driving member 21 to move toward the winding needle 1 located at the winding station W1, so that the material strip A can be cut by the cutter 23 and the free end B of the cut material strip A can be pushed into the gap 13 through the pushing member 22. After the free end B of the material strip A is pushed into the gap 13, the free end B pushed into the gap 13 can be fixed in the gap 13 by the fixing member 3 to prevent the free end B of the material strip A pushed into the gap 13 from sliding out of the gap 13 again.
  • the winding needle 1 can rotate
  • the winding needle 1 is arranged on the turret 20, so when the winding needle 1 rotates relative to the turret 20, the material strip A can be gradually wound around the outer periphery of the winding needle 1 located at the winding station W1.
  • the turret 20 can be rotated, and then the winding needle 1 located at the winding station W1 can be rotated to the unloading station W2, and the winding needle 1 located at the unloading station W2 can be rotated to the winding station W1. After the winding needle 1 located at the winding station W1 rotates to the unloading station W2, the core on the winding needle 1 can be removed from the winding needle 1 for unloading.
  • the material strip A can be transmitted to the winding needle 1 through the unwinding mechanism 10, and the cutting drive member 21 can drive the pushing member 22 and the cutter 23 to move synchronously in the direction close to the winding needle 1 located at the winding station W1, so as to cut the material strip A through the cutter 23 and push the free end B of the cut material strip A into the gap 13 through the pushing member 22, so that the winding needle 1 can wind the core, and all the above actions are performed in a cycle.
  • the winding mechanism 30 does not need to perform auxiliary actions (such as the winding needle retracting in the winding needle seat and extending from the winding needle seat) when performing the needle insertion action, when the winding mechanism is used in the winding equipment, it can improve the efficiency of the winding equipment in processing the winding core to a certain extent, thereby making the efficiency of the winding equipment in processing the winding core higher.
  • auxiliary actions such as the winding needle retracting in the winding needle seat and extending from the winding needle seat

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Abstract

本申请涉及卷绕设备技术领域，尤其涉及一种卷绕机构及卷绕设备。一种卷绕机构，所述卷绕机构包括：卷针，所述卷针包括第一半针及第二半针，所述第一半针及所述第二半针间隔相对设置以形成缝隙；切割组件，所述切割组件包括切割驱动件、推动件及切刀，所述推动件及所述切刀均设置于所述切割驱动件，所述切割驱动件用于驱动所述推动件及所述切刀朝靠近所述卷针的方向运动，以通过所述切刀将料带切断，所述推动件用于将切断后的所述料带的自由端推入所述缝隙内，固定件，所述固定件用于将推入所述缝隙内的所述自由端固定于所述缝隙内。本申请提供的卷绕机构，可以使得卷绕设备加工卷芯的效率较高。

Description

卷绕机构及卷绕设备
本公开要求于2023年06月15日提交中国专利局，申请号为202321536661.7，申请名称为“卷绕机构及卷绕设备”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本申请涉及卷绕设备技术领域，尤其涉及一种卷绕机构及卷绕设备。
背景技术
卷绕设备是一种用于加工电池的卷芯的设备。卷绕设备通常包括卷针，卷针具有开口的缝隙。在通过卷绕设备加工卷芯时，首先需要完成插针动作(将正、负极片和隔膜等通过开口穿入卷针的缝隙中)，然后再起卷进行卷绕卷芯。
相关技术中，为了完成插针动作，在插针动作之前，需先保证卷针收缩在卷针座中，在进行插针动作时，需要使得卷针从卷针座中伸出，以使得正、负极片和隔膜等刚好能够通过开口进入卷针的缝隙中，然后才可以起卷进行卷绕卷芯。然而，此种插针方式辅助动作(卷针收缩在卷针座以及从卷针座中伸出等动作)较多，使得卷绕设备加工卷芯的效率较低。
发明内容
本申请公开了一种卷绕机构及卷绕设备，其能够使得卷绕设备加工卷芯的效率较高。
为了实现上述目的，第一方面，本申请公开一种卷绕机构，包括：
卷针，所述卷针包括第一半针及第二半针，所述第一半针及所述第二半针间隔相对设置以形成缝隙；
切割组件，所述切割组件包括切割驱动件、推动件及切刀，所述推动件及所述切刀均设置于所述切割驱动件，所述切割驱动件用于驱动所述推动件及所述切刀朝靠近所述卷针的方向运动，以通过所述切刀将料带切断，所述推动件用于将切断后的所述料带的自由端推入所述缝隙内；
固定件，所述固定件用于将推入所述缝隙内的所述自由端固定于所述缝隙内。
在进行插针动作时，由于推动件及切刀均设置于切割驱动件，因此，切割驱动件在驱动切刀朝靠近卷针的方向图中轴的正方向运动，以将料带切断的过程中，可以同步带动推动件朝靠近卷针的方向运动，进而使得推动件能够刚好将切断后的料带的自由端推入缝隙内，从而可以实现插针的动作。
基于此，当卷绕机构应用在加工电池的卷芯的场景中时，上述料带可以理解为卷芯的正、负极片和隔膜等，显然，在切割驱动件驱动切刀切断正、负极片和隔膜等的过程中，可以同步驱动推动件将切断后的正、负极片和隔膜等的自由端推入缝隙内，进而可以实现卷芯插针的动作，相比于相关技术中在进行插针动作前，需要首先保证卷针收缩在卷针座中，在进行插针动作时，需要使得卷针从卷针座中伸出才能完成插针动作的方式来说，该卷绕机构无需进行辅助动作(卷针收缩在卷针座以及从卷针座中伸出等动作)，因此，当该卷绕机构应用在卷绕设备中时，可以在一定程度上提高卷绕设备加工卷芯的效率，进而可以使得卷绕设备加工卷芯的效率较高。
可选地，所述切割组件还包括：
推动驱动件，所述推动驱动件设置于所述切割驱动件，所述推动件设置于推动驱动件，所述切割驱动件用于驱动所述推动驱动件朝靠近所述卷针的方向运动，以带动所述推动件朝靠近所述卷针的方向运动，所述推动驱动件用于驱动所述推动件将切断后的所述料带的自由端推入所述缝隙内。
可选地，所述推动件为推动板，所述推动板具有用于与所述料带抵接以将所述自由端推入所述缝隙内的推动端，所述推动端具有倒角。
通过使得推动件的用于与料带抵接的推动端具有倒角，可以使得推动端比较圆润，进而可以避免刮伤料带的情况发生。
可选地，所述固定件为夹紧件，所述夹紧件具有夹紧端，所述夹紧端用于朝靠近或远离所述第一半针的方向运动，以将所述自由端夹紧或松开于所述夹紧端与所述第一半针之间。
通过使得夹紧端朝靠近第一半针的方向运动，可以在自由端被推入缝隙内之后被夹紧于夹紧端与第一半针之间，这样，可以避免推入缝隙内的料带的自由端重新滑出缝隙的情况发生。
可选地，所述夹紧件为气缸，所述夹紧端为所述气缸的活塞杆的自由端的，所述气缸的数量为多个，多个所述气缸沿所述卷针的轴向间隔设置于所述第二半针。
通过使得气缸的数量为多个，并使得多个气缸沿卷针的轴向间隔设置于第二半针，当多个气缸的夹紧端同时朝靠近第一半针的方向运动时，多个气缸的活塞杆的自由端可 以同时将自由端夹紧于多个活塞杆的自由端与第一半针之间，进而可以使得料带的自由端更稳定的固定于缝隙内，从而可以更好地避免推入缝隙内的料带的自由端重新滑出缝隙的情况发生。
可选地，所述推动件上设置有避让口，所述避让口沿所述夹紧端的运动方向贯穿所述推动件，以供所述夹紧端穿过所述避让口将所述自由端夹紧于所述夹紧端与所述第一半针之间。
在夹紧端朝靠近第一半针的方向运动以将自由端夹紧于夹紧端与第一半针之间的过程中，避让口可以供夹紧端穿过推动件，进而可以避免推动件与夹紧件之间出现干涉的情况。
可选地，所述第一半针上设置有吸附孔，所述吸附孔用于将推入所述缝隙内的所述料带吸附于所述第一半针。
通过在第一半针上设置吸附孔，通过使得吸附孔中的压强为负压，即可实现将推入缝隙内的料带吸附于第一半针的目的，实现方式非常的简单，因此，可以在一定程度上简化整个卷绕机构的结构。
可选地，所述卷绕机构还包括：
绷紧组件，所述绷紧组件用于在所述切刀将所述料带切断之前绷紧所述料带。
通过设置绷紧组件，由于绷紧组件能够在切刀将料带切断之前绷紧料带，因此，可以使得切刀更方便的将料带切断，避免在切割料带时料带松松垮垮、导致切刀无法将料带切断的情况。
可选地，所述绷紧组件包括：
多个过辊，多个所述过辊沿所述卷针的周向位于所述切刀的两侧，多个所述过辊中的至少一个所述过辊用于朝靠近所述卷针的方向运动，以将所述料带抵接于所述卷针的外周以绷紧所述料带，其中，至少一个所述抵接于所述卷针的外周的过辊位于所述切刀的上游。
通过使得多个过辊分别朝靠近卷针的方向运动、将料带抵接于卷针的外周，可以使得卷针及多个过辊共同形成多个类似夹爪的结构，进而可以实现固定料带的目的。也即是，只需使得多个过辊分别朝靠近卷针的方向运动，即可实现通过多个过辊分别固定料带目的，无需专门设计夹爪，因此，结构设计简单，巧妙。另外，由于多个过辊共同作用于同一个卷针，因此，可以在一定程度上使得整个卷绕机构比较小巧。
可选地，每个所述过辊均连接于所述切割驱动件，所述切割驱动件用于驱动所述切刀及每个所述过辊同步朝靠近所述卷针的方向运动，以在所述切刀将所述料带切断之前 通过所述过辊绷紧所述料带。
通过使得每个过辊均连接于切割驱动件，可以使得绷紧组件及切刀共用同一个切割驱动件，可以在节省成本的同时使得整个卷绕机构比较小巧。
可选地，所述过辊为单向转动辊，位于所述切刀两侧的所述过辊的转动方向相反，且每个所述过辊与所述卷针抵接处的转动切线方向背离所述切刀。
可选地，每个所述过辊均弹性连接于所述切割驱动件。
通过使得过辊弹性连接于切割驱动件，可以使得当每个过辊朝靠近卷针的方向运动、使得料带被夹持于过辊与卷针之间时，过辊与卷针的外周之间的接触为弹性接触，进而可以避免过辊与卷针的外周之间出现激烈碰撞的情况发生。
可选地，所述第一半针及所述第二半针中的至少一者沿靠近或远离另一者的方向可滑动地设置，以调节所述缝隙的宽度。
通过使得第一半针及第二半针中的至少一者沿靠近或远离另一者的方向可滑动地设置，可以非常灵活的调节缝隙的宽度，一方面，可以根据料带的厚度非常灵活的调节缝隙的宽度，使得缝隙适配不同厚度的料带。另一方面，当卷绕机构应用在卷绕设备中加工电池的卷芯时，在卷芯卷绕完成之后，通过第一半针及第二半针中的至少一者沿靠近另一者的方向可滑动，可以使得缝隙变窄，进而可以使得卷芯的内周与卷针的外周之间接触变得不再紧密，这样，便于将卷芯从卷针上拆下。
第二方面，本申请公开一种卷绕设备，所述卷绕设备具有卷绕工位及下料工位，所述卷绕设备包括：
放卷机构；
转塔，所述转塔可转动地设置；
上述第一方面中任一项所述的卷绕机构，所述卷针的数量至少为两个，多个所述卷针均可转动地设置于所述转塔；
所述切割组件对应所述卷绕工位设置，所述放卷机构用于向位于所述卷绕工位的所述卷针传送料带，所述切割驱动件用于驱动所述推动件及所述切刀同步朝靠近位于所述卷绕工位的所述卷针的方向运动，以通过所述切刀将所述料带切断，所述推动件用于将切断后的所述料带的自由端推入所述缝隙内，所述卷绕工位的卷针用于在转动时将所述料带卷绕于所述卷针的外周，所述转塔用于在转动时将位于所述卷绕工位的卷针旋转至下料工位、将位于所述下料工位的卷针旋转至所述卷绕工位。
由于卷绕机构在进行插针动作时无需进行辅助动作卷针收缩在卷针座以及从卷针座中伸出等动作，因此，当该卷绕机构应用在卷绕设备中时，可以在一定程度上提高卷 绕设备加工卷芯的效率，进而可以使得卷绕设备加工卷芯的效率较高。
与现有技术相比，本申请的有益效果在于：
本申请中，在进行插针动作时，由于推动件及切刀均设置于切割驱动件，因此，切割驱动件在驱动切刀朝靠近卷针的方向图中轴的正方向运动，以将料带切断的过程中，可以带动推动件朝靠近卷针的方向运动，进而使得推动件可以将切断后的料带的自由端推入缝隙内，最后，可以通过固定件将推入缝隙内的自由端固定于缝隙内，可以避免推入缝隙内的料带的自由端重新滑出缝隙，至此，则实现了插针的动作。
基于此，当卷绕机构应用在加工电池的卷芯的场景中时，上述料带可以理解为卷芯的正、负极片和隔膜等，显然，在切割驱动件驱动切刀切断正、负极片和隔膜等的过程中，可以驱动推动件将切断后的正、负极片和隔膜等的自由端推入缝隙内，进而可以实现卷芯插针的动作，相比于相关技术中在进行插针动作前，需要首先保证卷针收缩在卷针座中，在进行插针动作时，需要使得卷针从卷针座中伸出才能完成插针动作的方式来说，该卷绕机构无需进行辅助动作(卷针收缩在卷针座以及从卷针座中伸出等动作)，因此，当该卷绕机构应用在卷绕设备中时，可以在一定程度上提高卷绕设备加工卷芯的效率，进而可以使得卷绕设备加工卷芯的效率较高。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种卷绕机构的结构是示意图(自由端未推入缝隙内)；
图2图1中的卷绕机构在另一状态下的结构示意图(自由端推入缝隙内)；
图3是本申请实施例提供的第二半针及推动件之间的位置关系图；
图4是本申请实施例提供的另一种卷绕机构的结构是示意图(自由端未推入缝隙内)；
图5是图4中的卷绕机构在又一状态下的结构示意图(过辊抵接于卷针)；
图6是本申请实施例提供的一种卷绕设备的结构是示意图。
主要附图标记说明
1-卷针；11-第一半针；12-第二半针；121-吸附孔；13-缝隙；
2-切割组件；21-切割驱动件；22-推动件；221-推动端；222-避让口；2211-倒角；
23-切刀； 24-推动驱动件；
3-固定件； 31-夹紧端；
4-绷紧组件； 41-过辊； 42-弹簧；
10-放卷机构； 20-转塔； 30-卷绕机构；
A-料带；B-自由端；W1-卷绕工位；W2-下料工位；F-转动切线方向。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请中，术语“上”、“下”、“左”、“右”、“前”、“后”、“顶”、“底”、“内”、“外”、“中”、“竖直”、“水平”、“横向”、“纵向”等指示的方位或位置关系为基于附图所示的方位或位置关系。这些术语主要是为了更好地描述本申请及其实施例，并非用于限定所指示的装置、元件或组成部分必须具有特定方位，或以特定方位进行构造和操作。
并且，上述部分术语除了可以用于表示方位或位置关系以外，还可能用于表示其他含义，例如术语“上”在某些情况下也可能用于表示某种依附关系或连接关系。对于本领域普通技术人员而言，可以根据具体情况理解这些术语在本申请中的具体含义。
此外，术语“安装”、“设置”、“设有”、“连接”、“相连”应做广义理解。例如，可以是固定连接，可拆卸连接，或整体式构造；可以是机械连接，或电连接；可以是直接相连，或者是通过中间媒介间接相连，又或者是两个装置、元件或组成部分之间内部的连通。对于本领域普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
此外，术语“第一”、“第二”等主要是用于区分不同的装置、元件或组成部分(具体的种类和构造可能相同也可能不同)，并非用于表明或暗示所指示装置、元件或组成部分的相对重要性和数量。除非另有说明，“多个”的含义为两个或两个以上。
下面将结合具体实施例和附图对本申请的技术方案作进一步的说明。
实施例一
图1是本申请实施例示出的一种卷绕机构的结构是示意图(自由端未推入缝隙内)，图2图1中的卷绕机构在另一状态下的结构示意图(自由端推入缝隙内)。
参见图1及图2，卷绕机构包括卷针1及切割组件2及固定件3。其中，卷针1包括第一半针11及第二半针12，第一半针11及第二半针12间隔相对设置以形成缝隙13。切割组件2包括切割驱动件21、推动件22及切刀23，推动件22及切刀23均设置于切割驱动件21，切割驱动件21用于驱动推动件22及切刀23朝靠近卷针1的方向(图1中X轴的正方向)运动，以通过切刀23将料带A切断，推动件22用于将切断后的料带A的自由端B推入缝隙13内，固定件3用于将推入缝隙13内的自由端B固定于缝隙13内。
本申请实施例中，在进行插针动作时，由于推动件22及切刀23均设置于切割驱动件21，因此，切割驱动件21在驱动切刀23朝靠近卷针1的方向(图1中X轴的正方向)运动，以将料带A切断的过程中，可以带动推动件22朝靠近卷针1的方向运动，进而使得推动件22可以将切断后的料带A的自由端B推入缝隙13内，最后，可以通过固定件3将推入缝隙13内的自由端B固定于缝隙13内，可以避免推入缝隙13内的料带A的自由端B重新滑出缝隙13，至此，则实现了插针的动作。
基于此，当卷绕机构应用在加工电池的卷芯的场景中时，上述料带可以理解为卷芯的正、负极片和隔膜等，显然，在切割驱动件21驱动切刀23切断正、负极片和隔膜等的过程中，可以驱动推动件22将切断后的正、负极片和隔膜等的自由端B推入缝隙13内，进而可以实现卷芯插针的动作，相比于相关技术中在进行插针动作前，需要首先保证卷针收缩在卷针座中，在进行插针动作时，需要使得卷针从卷针座中伸出才能完成插针动作的方式来说，该卷绕机构无需进行辅助动作(卷针收缩在卷针座以及从卷针座中伸出等动作)，因此，当该卷绕机构应用在卷绕设备中时，可以在一定程度上提高卷绕设备加工卷芯的效率，进而可以使得卷绕设备加工卷芯的效率较高。
值得注意的是，上述切刀23将料带A切断以及推动件22将自由端B推入缝隙13内可以是通过同一个切割驱动件21驱动实现的，通俗地讲，切割驱动件21在驱动推动件22及切刀23朝靠近卷针1的方向运动的过程中，首先通过切刀23切断了料带A，随着切割驱动件21继续驱动推动件22及切刀23朝靠近卷针1的方向，推动件22将切断后的料带A的自由端B推入缝隙13内的目的。当上述切刀23将料带A切断以及推动件22将自由端B推入缝隙13内通过同一个切割驱动件21驱动实现时，由于通过同一个切割驱动件21可以同步带动切刀23及推动件22运动，一方面，可以进一步的提高卷绕设备加工卷芯的效率。另一方面，由于无需为切刀23及推动件22各自设置独立的驱动件，因此，可以使得卷针机构的体积较小巧的同时在一定程度上降低卷针机构的成本。
当然，切刀23将料带A切断以及推动件22将自由端B推入缝隙13内可以是通过不同的驱动件驱动实现，当通过不同的驱动件驱动实现时，参见图1及图2，在一些实施例中，切割组件2还包括：推动驱动件24，推动驱动件24设置于切割驱动件21，推动件22设置于推动驱动件24，切割驱动件21用于驱动推动驱动件24朝靠近卷针1的方向运动，以带动推动件22朝靠近卷针1的方向运动，推动驱动件24用于驱动推动件22将切断后的料带A的自由端B推入缝隙13内。
如此设置，可以使得切断料带A的功能由切割驱动件21来实现，将自由端B推入缝隙13内的功能由推动驱动件24来实现，各个功能对应各自的驱动件，互不影响、更加的灵活。
需要说明的是，上述料带理解为卷芯的正、负极片和隔膜等只是本申请实施例示出的当卷绕机构应用在加工电池的卷芯的场景中时对料带的一种可能的理解，当然，当卷绕机构应用在加工电池的卷芯的场景中时，上述料带也可以理解为正、负极片和隔膜等中一种或者多种，本申请实施例对此不作限定。
另外，当应用场景发生变化时，上述料带还可以作其他理解，比如，当卷绕机构应用在卷绕塑料带的场景中时，上述料带可以理解为塑料带等，本申请实施例对料带不再一一列举。
上述切割驱动件21可以为气缸或者任意能够驱动推动件22及切刀23同步朝靠近卷针1的方向运动的元器件，比如，切割驱动件21可以为电缸或者丝杠机构等，本申请实施例对切割驱动件21不作限定。上述推动驱动件24可以与切割驱动件21类似，本申请实施例在此不再赘述。
为了避免推动件22在将料带A的自由端B推入缝隙13内的过程中，将料带A刮伤，在一些实施例中，参见图2，推动件22为推动板，推动板具有用于与料带A抵接以将自由端B推入缝隙13内的推动端221，推动端221具有倒角2211。
通过使得推动件22的用于与料带A抵接的推动端221具有倒角2211，可以使得推动端221比较圆润，进而可以避免刮伤料带A的情况发生。
上述倒角2211可以为倒圆角或者倒直角等，本申请实施例对此不作限定。
在一些实施例中，参见图2，固定件3为夹紧件，夹紧件具有夹紧端31，夹紧端31用于朝靠近或远离第一半针11的方向(图2中Y轴方向)运动，以将自由端B夹紧或松开于夹紧端31与第一半针11之间。
通过使得夹紧端31朝靠近第一半针11的方向运动，可以在自由端B被推入缝隙13内之后被夹紧于夹紧端31与第一半针11之间，这样，可以避免推入缝隙13内的料 带A的自由端B重新滑出缝隙13的情况发生。
当固定件3为夹紧件时，由于通过夹紧件的夹紧端31可以将自由端B夹紧或松开于夹紧端31与第一半针11之间，充分了利用了第一半针11作为夹紧自由端B的部分结构，实现方式巧妙，可以在一定程度上使得固定件3的体积变得小巧。
其中，上述夹紧件可以理解为气缸，当夹紧件理解为气缸时，夹紧端31可以理解为气缸的活塞杆的自由端。当然，上述夹紧件也可以为电缸等，本申请实施例对此不作限定。
在一些实施例中，参见图2，上述夹紧件可以设置于第二半针12，当然，夹紧件也可以设置于其他位置，本申请实施例对此不作限定。
在一些实施例中，参见图3，夹紧件的数量为多个，多个夹紧件沿卷针1的轴向(图3中Z轴方向)间隔设置于第二半针12。
通过使得夹紧件的数量为多个，并使得多个夹紧件沿卷针1的轴向间隔设置于第二半针12，当多个夹紧件的夹紧端31同时朝靠近第一半针11的方向运动时，多个夹紧件的夹紧端31可以同时将自由端B夹紧于多个夹紧端31与第一半针11之间，进而可以使得自由端B更稳定的固定于缝隙13内，从而可以更好地避免推入缝隙13内的料带A的自由端B重新滑出缝隙13的情况发生。
其中，上述夹紧件的数量可以为四个或者五个等，本申请实施例对夹紧件的数量不作限定。当然，夹紧件的数量也可以为一个，本申请实施例对此不作限定。
为了避免推动件22与夹紧件之间出现干涉的情况，在一些实施例中，参见图3，推动件22上设置有避让口222，避让口222沿夹紧端31的运动方向(图3中Y轴方向)贯穿推动件22，以供夹紧端31穿过避让口222将自由端B夹紧于夹紧端31与第一半针11之间。
如此设置，在夹紧端31朝靠近第一半针11的方向运动以将自由端B夹紧于夹紧端31与第一半针11之间的过程中，避让口222可以供夹紧端31穿过推动件22，进而可以避免推动件22与夹紧件之间出现干涉的情况。
其中，参见图2及图3，上述避让口222的形状可以为U形，当避让口222的形状为U形时，可以使得避让口222沿推动件22运动方向(图2中X轴方向)贯穿推动件22的推动端221，进而可以使得避让口222沿推动件22运动方向具有开口，从而可以更好地避免推动件22在运动的过程中与夹紧件之间出现干涉的情况。
当然，避让口222还可以为其他可能的形状，比如，避让口222还可以为圆形或者三角形等，本申请实施例对此不作限定。
为了更好地避免推入缝隙13内的料带A的自由端B重新滑出缝隙13的情况发生，在一些实施例中，参见图2，第一半针11上设置有吸附孔121(图中未示出)，吸附孔121用于将推入缝隙13内的料带A吸附于第一半针11。
通过在第一半针11上设置吸附孔121，通过使得吸附孔121中的压强为负压，即可实现将推入缝隙13内的料带A吸附于第一半针11的目的，实现方式非常的简单，因此，可以在一定程度上简化整个卷绕机构的结构。
其中，上述吸附孔121的数量可以为多个、形状可以为圆形或者任意可能的形状，本申请实施例对吸附孔121的数量及形状均不作限定。
在一些实施例中，参见图4，卷绕机构还包括：绷紧组件4，绷紧组件4用于在切刀23将料带A切断之前绷紧料带A。
通过设置绷紧组件4，由于绷紧组件4能够在切刀23将料带A切断之前绷紧料带A，因此，可以使得切刀23更方便的将料带A切断，避免在切割料带A时料带A松松垮垮、导致切刀23无法将料带A切断的情况。
其中，上述绷紧组件4实现绷紧料带A方式具有多种，在其中一种可能的实现方式中，参见图4及图5，绷紧组件4包括：多个过辊41，多个过辊41沿卷针1的周向位于切刀23的两侧，多个过辊41中的至少一个过辊41用于朝靠近卷针1的方向(图5中X轴的正方向)运动，以将料带A抵接于卷针1的外周以绷紧料带A，至少一个抵接于卷针1的外周的过辊41位于切刀23的上游。
由于当多个过辊41中的至少一个过辊41朝靠近卷针1的方向运动时，能够将料带A抵接于卷针1的外周，因此，料带A将被夹持于过辊41与卷针1之间，进而起到固定料带A的作用。又由于多个过辊41沿卷针1的周向位于切刀23的两侧，因此，通过多个过辊41可以在切刀23沿卷针1的周向的两侧固定料带A，进而可以实现绷紧料带A的目的。
通过使得多个过辊41分别朝靠近卷针1的方向运动、将料带A抵接于卷针1的外周，可以使得卷针1及多个过辊41共同形成多个类似夹爪的结构，进而可以实现固定料带A的目的。也即是，只需使得多个过辊41分别朝靠近卷针1的方向运动，即可实现通过多个过辊41分别固定料带A目的，无需专门设计夹爪，因此，结构设计简单，巧妙。另外，由于多个过辊41共同作用于同一个卷针1，因此，可以在一定程度上使得整个卷绕机构比较小巧。
上述切刀23的上游是指当卷绕机构应用在卷绕设备中，且卷绕设备包括用于向卷针1传送料带的放卷机构10时，切刀23的靠近放卷机构10的一侧即为切刀23的上游。
其中，过辊41的数量可以为两个或者三个等，只需使得过辊41沿卷针1的周向位于切刀23的两侧即可，本申请实施例对过辊41的数量不作限定。
需要说明的是，上述过辊41将料带A抵接于卷针1的外周以绷紧料带A只是本申请实施例示出的一种可能的绷紧料带A的方式，当卷针1较小时，卷针1可能无法提供充足的外周供过辊41抵接，因此，也可以在过辊41的运动轨迹上专门设置抵接板，并使得当过辊41朝靠近卷针1的方向运动时，能够将料带A抵接于抵接板，这样，同样可以实现绷紧料带A的目的，本申请实施例对过辊41的抵接位置不作限定。
上述绷紧组件4的实现方式具有多种，在另一种可能的实现方式中，绷紧组件4包括：多个夹爪，多个夹爪沿卷针1的周向位于切刀23的两侧，每个夹爪均用于夹持料带A，这样，当夹爪在切刀23沿卷针1的周向的两侧分别夹持料带A时，同样可以实现绷紧料带A的目的，只需能够实现绷紧料带A的目的即可，本申请实施例对绷紧组件4具体的实现方式不作限定。
在一些实施例中，参见图5，每个过辊41均连接于切割驱动件21，切割驱动件21用于驱动切刀23及过辊41同步朝靠近卷针1的方向运动，以在切刀23将料带A切断之前通过过辊41绷紧料带A。
通过使得每个过辊41均连接于切割驱动件21，可以使得绷紧组件4及切刀23共用同一个切割驱动件21，可以在节省成本的同时使得整个卷绕机构比较小巧。
另外，由于当切割驱动件21驱动切刀23及过辊41同步朝靠近卷针1的方向运动时，能够在实现通过切刀23将料带A切断的同时实现通过过辊41绷紧料带A，使得绷紧料带A的工作及切断料带A的工作同时进行，因此，可以进一步提高卷绕机构的加工效率。基于此，当卷绕机构应用在卷绕设备中时，可以使得卷绕设备加工卷芯的效率进一步地提高。
为了避免在通过切刀23切断料带A的过程中，过辊41出现了滚动的情况，导致料带A变得松松垮垮，影响切刀23很好的切割料带A，在一些实施例中，过辊41为单向转动辊，位于切刀23两侧的过辊41的转动方向相反，且每个过辊41与卷针1抵接处的转动切线方向F背离切刀23。
通过使得每个过辊41与卷针1抵接处的转动切线方向F背离切刀23，可以使得切刀23在切割料带A的过程中，过辊41可以阻挡料带A向靠近切刀23的方向滑动，使得料带A一直处于绷紧状态，这样，便于通过切刀23将料带A切断。
在一些实施例中，参见图4，每个过辊41均弹性连接于切割驱动件21，通过使得过辊41弹性连接于切割驱动件21，可以使得当每个过辊41朝靠近卷针1的方向运动、 使得料带A被夹持于过辊41与卷针1之间时，过辊41与卷针1的外周之间的接触为弹性接触，进而可以避免过辊41与卷针1的外周之间出现激烈碰撞的情况发生。
具体地，参见图4，过辊41可以通过弹簧42弹性连接于切割驱动件21，或者，通过其他可能的弹性元件弹性连接于切割驱动件21，本申请实施例对此不作限定。
在一些实施例中，第一半针11及第二半针12中的至少一者沿靠近或远离另一者的方向可滑动地设置，以调节缝隙13的宽度。
通过使得第一半针11及第二半针12中的至少一者沿靠近或远离另一者的方向可滑动地设置，可以非常灵活的调节缝隙13的宽度，一方面，可以根据料带A的厚度非常灵活的调节缝隙13的宽度，使得缝隙13适配不同厚度的料带A。另一方面，当卷绕机构应用在卷绕设备中加工电池的卷芯时，在卷芯卷绕完成之后，通过第一半针11及第二半针12中的至少一者沿靠近另一者的方向可滑动，可以使得缝隙13变窄，进而可以使得卷芯的内周与卷针的外周之间接触变得不再紧密，这样，便于将卷芯从卷针上拆下。
实施例二
图6是本申请实施例示出的一种卷绕设备的结构示意图。
参见图2及图6，卷绕设备具有卷绕工位W1及下料工位W2，卷绕设备包括：放卷机构10、转塔20及卷绕机构30。其中，转塔20可转动地设置，卷针1的数量至少为两个，多个卷针1均可转动地设置于转塔20，切割组件2对应卷绕工位W1设置，放卷机构10用于向位于卷绕工位W1的卷针1传送料带A，切割驱动件21用于驱动推动件22及切刀23朝靠近位于卷绕工位W1的卷针1的方向运动，以通过切刀23将料带A切断，推动件22用于将切断后的料带A的自由端B推入缝隙13内，卷绕工位W1的卷针1用于在转动时将料带A卷绕于卷针1的外周，转塔20用于在转动时将位于卷绕工位W1的卷针1旋转至下料工位W2、将位于下料工位W2的卷针1旋转至卷绕工位W1。
其中，卷绕机构30的结构可以与上述实施例一中的任一种卷绕机构30的结构相同，并能带来相同或者类似的有益效果，具体可参照上述实施例一中对卷绕机构30的描述，本申请实施例对此不作限定。
本申请实施例中，卷绕设备在加工电池的卷芯时，首先，可以通过放卷机构10向位于卷绕工位W1的卷针1传送料带A，接着，可以通过切割驱动件21驱动推动件22及切刀23朝靠近位于卷绕工位W1的卷针1的方向运动，以通过切刀23将料带A切断并通过推动件22将切断后的料带A的自由端B推入缝隙13内，在料带A的自由端B推入缝隙13内之后，可以通过固定件3将推入缝隙13内的自由端B固定于缝隙13内，以避免推入缝隙13内的料带A的自由端B重新滑出缝隙13，接着，由于卷针1可转动 地设置于转塔20，因此，当卷针1相对于转塔20转动时，可以使得料带A逐渐卷绕于位于卷绕工位W1的卷针1的外周。
当料带A的卷绕量达到预设量之后，由于转塔20可转动地设置，因此可以使得转塔20转动，进而可以将位于卷绕工位W1的卷针1旋转至下料工位W2、将位于下料工位W2的卷针1旋转至卷绕工位W1，当位于卷绕工位W1的卷针1旋转至下料工位W2之后，以便将该卷针1上的卷芯从卷针1上拆除以进行下料，当位于下料工位W2的卷针1旋转至卷绕工位W1之后，可以通过放卷机构10向该卷针1传送料带A，切割驱动件21可以驱动推动件22及切刀23同步朝靠近位于卷绕工位W1的卷针1的方向运动，以通过切刀23将料带A切断并通过推动件22将切断后的料带A的自由端B推入缝隙13内，以便该卷针1进行卷绕卷芯，上述所有动作循环进行。
由于卷绕机构30在进行插针动作时无需进行辅助动作(卷针收缩在卷针座以及从卷针座中伸出等动作)，因此，当该卷绕机构应用在卷绕设备中时，可以在一定程度上提高卷绕设备加工卷芯的效率，进而可以使得卷绕设备加工卷芯的效率较高。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (14)

  1. 一种卷绕机构，其特征在于，所述卷绕机构包括：
    卷针(1)，所述卷针(1)包括第一半针(11)及第二半针(12)，所述第一半针(11)及所述第二半针(12)间隔相对设置以形成缝隙(13)；
    切割组件(2)，所述切割组件(2)包括切割驱动件(21)、推动件(22)及切刀(23)，所述推动件(22)及所述切刀(23)均设置于所述切割驱动件(21)，所述切割驱动件(21)用于驱动所述推动件(22)及所述切刀(23)朝靠近所述卷针(1)的方向运动，以通过所述切刀(23)将料带(A)切断，所述推动件(22)用于将切断后的所述料带(A)的自由端(B)推入所述缝隙(13)内；
    固定件(3)，所述固定件(3)用于将推入所述缝隙(13)内的所述自由端(B)固定于所述缝隙(13)内。
  2. 根据权利要求1所述的卷绕机构，其特征在于，所述切割组件(2)还包括：
    推动驱动件(24)，所述推动驱动件(24)设置于所述切割驱动件(21)，所述推动件(22)设置于推动驱动件(24)，所述切割驱动件(21)用于驱动所述推动驱动件(24)朝靠近所述卷针(1)的方向运动，以带动所述推动件(22)朝靠近所述卷针(1)的方向运动，所述推动驱动件(24)用于驱动所述推动件(22)将切断后的所述料带(A)的自由端(B)推入所述缝隙(13)内。
  3. 根据权利要求1所述的卷绕机构，其特征在于，所述推动件(22)为推动板，所述推动板具有用于与所述料带(A)抵接以将所述自由端(B)推入所述缝隙(13)内的推动端(221)，所述推动端(221)具有倒角(2211)。
  4. 根据权利要求1所述的卷绕机构，其特征在于，所述固定件(3)为夹紧件，所述夹紧件具有夹紧端(31)，所述夹紧端(31)用于朝靠近或远离所述第一半针(11)的方向运动，以将所述自由端(B)夹紧或松开于所述夹紧端(31)与所述第一半针(11)之间。
  5. 根据权利要求4所述的卷绕机构，其特征在于，所述夹紧件为气缸，所述夹紧端(31)为所述气缸的活塞杆的自由端，所述气缸的数量为多个，多个所述气缸沿所述卷 针(1)的轴向间隔设置于所述第二半针(12)。
  6. 根据权利要求4所述的卷绕机构，其特征在于，所述推动件(22)上设置有避让口(222)，所述避让口(222)沿所述夹紧端(31)的运动方向贯穿所述推动件(22)，以供所述夹紧端(31)穿过所述避让口(222)将所述自由端(B)夹紧于所述夹紧端(31)与所述第一半针(11)之间。
  7. 根据权利要求1-6任一项所述的卷绕机构，其特征在于，所述第一半针(11)上设置有吸附孔(121)，所述吸附孔(121)用于将推入所述缝隙(13)内的所述料带(A)吸附于所述第一半针(11)。
  8. 根据权利要求1-6任一项所述的卷绕机构，其特征在于，所述卷绕机构还包括：
    绷紧组件(4)，所述绷紧组件(4)用于在所述切刀(23)将所述料带(A)切断之前绷紧所述料带(A)。
  9. 根据权利要求8所述的卷绕机构，其特征在于，所述绷紧组件(4)包括：
    多个过辊(41)，多个所述过辊(41)沿所述卷针(1)的周向位于所述切刀(23)的两侧，多个所述过辊(41)中的至少一个所述过辊(41)用于朝靠近所述卷针(1)的方向运动，以将所述料带(A)抵接于所述卷针(1)的外周以绷紧所述料带(A)，其中，至少一个所述抵接于所述卷针(1)的外周的过辊(41)位于所述切刀(23)的上游。
  10. 根据权利要求9所述的卷绕机构，其特征在于，每个所述过辊(41)均连接于所述切割驱动件(21)，所述切割驱动件(21)用于驱动所述切刀(23)及每个所述过辊(41)同步朝靠近所述卷针(1)的方向运动，以在所述切刀(23)将所述料带(A)切断之前通过所述过辊(41)绷紧所述料带(A)。
  11. 根据权利要求9所述的卷绕机构，其特征在于，所述过辊(41)为单向转动辊，位于所述切刀(23)两侧的所述过辊(41)的转动方向相反，且每个所述过辊(41)与所述卷针(1)抵接处的转动切线方向(F)背离所述切刀(23)。
  12. 根据权利要求9所述的卷绕机构，其特征在于，每个所述过辊(41)均弹性连接 于所述切割驱动件(21)。
  13. 根据权利要求1-6任一项所述的卷绕机构，其特征在于，所述第一半针(11)及所述第二半针(12)中的至少一者沿靠近或远离另一者的方向可滑动地设置，以调节所述缝隙(13)的宽度。
  14. 一种卷绕设备，其特征在于，所述卷绕设备具有卷绕工位(W1)及下料工位(W2)，所述卷绕设备包括：
    放卷机构(10)；
    转塔(20)，所述转塔(20)可转动地设置；
    权利要求1-13中任一项所述的卷绕机构(30)，所述卷针(1)的数量至少为两个，至少两个所述卷针(1)均可转动地设置于所述转塔(20)；
    所述切割组件(2)对应所述卷绕工位(W1)设置，所述放卷机构(10)用于向位于所述卷绕工位(W1)的所述卷针(1)传送料带(A)，所述切割驱动件(21)用于驱动所述推动件(22)及所述切刀(23)朝靠近位于所述卷绕工位(W1)的所述卷针(1)的方向运动，以通过所述切刀(23)将所述料带(A)切断，所述推动件(22)用于将切断后的所述料带(A)的自由端(B)推入所述缝隙(13)内，所述卷绕工位(W1)的卷针(1)用于在转动时将所述料带(A)卷绕于所述卷针(1)的外周，所述转塔(20)用于在转动时将位于所述卷绕工位(W1)的卷针(1)旋转至下料工位(W2)、将位于所述下料工位(W2)的卷针(1)旋转至所述卷绕工位(W1)。
PCT/CN2024/089147 2023-06-15 2024-04-22 卷绕机构及卷绕设备 Ceased WO2024255445A1 (zh)

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