WO2023077579A1 - 卷针机构及卷绕机 - Google Patents

卷针机构及卷绕机 Download PDF

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Publication number
WO2023077579A1
WO2023077579A1 PCT/CN2021/133385 CN2021133385W WO2023077579A1 WO 2023077579 A1 WO2023077579 A1 WO 2023077579A1 CN 2021133385 W CN2021133385 W CN 2021133385W WO 2023077579 A1 WO2023077579 A1 WO 2023077579A1
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WO
WIPO (PCT)
Prior art keywords
needle
along
driving rod
axial direction
winding mechanism
Prior art date
Application number
PCT/CN2021/133385
Other languages
English (en)
French (fr)
Inventor
朱爱武
王奉杰
赵留杰
Original Assignee
无锡先导智能装备股份有限公司
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 无锡先导智能装备股份有限公司 filed Critical 无锡先导智能装备股份有限公司
Priority to EP21956967.0A priority Critical patent/EP4207406A4/en
Priority to US18/121,003 priority patent/US20230211970A1/en
Publication of WO2023077579A1 publication Critical patent/WO2023077579A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/02—Supporting web roll
    • B65H18/026—Cantilever type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/248—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by actuator movable in axial direction
    • B65H75/2484—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by actuator movable in axial direction movable actuator including wedge-like or lobed member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/28—Arrangements for positively securing ends of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/70—Other elements in edge contact with handled material, e.g. registering, orientating, guiding devices
    • B65H2404/72—Stops, gauge pins, e.g. stationary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/70—Other elements in edge contact with handled material, e.g. registering, orientating, guiding devices
    • B65H2404/74—Guiding means
    • B65H2404/741—Guiding means movable in operation
    • 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 battery manufacturing equipment, in particular to a needle winding mechanism and a winding machine.
  • the needle winding mechanism of the winding machine can clamp the material tape and wind the material tape around the outer circumference by rotation, which is the core component of the winding machine.
  • the needle winding mechanism In the actual production process, in order to adapt to different types of batteries, it is also necessary to adjust the radial dimension of the needle winding mechanism to change the circumference of the needle winding mechanism.
  • the needle rolling mechanism in the prior art is often provided with multiple sets of driving and transmission structures, resulting in a complex structure.
  • a needle rolling mechanism comprising:
  • each half-rolling needle assembly includes an outer needle and an inner clamping needle, and the outer needle and the inner clamping needle are both installed on the needle-rolling seat and can move along the needle-rolling mechanism radial movement of ;
  • the driving rod arranged between the outer needle and the inner clamping needle can reciprocate along the axial direction of the needle winding mechanism, and the side of the driving rod facing the outer needle cooperates with the outer needle to form a A first cam structure, the side of the drive rod facing the inner needle and the inner needle cooperate to form a second cam structure;
  • the driving rod advances along the axial direction of the needle winding mechanism, and can drive the two outer needles away from each other along the radial direction of the needle winding mechanism through the first cam structure, and through the second
  • the cam structure drives the two inner clamping needles to approach each other along the radial direction of the needle rolling mechanism.
  • a guide rod extending in the radial direction of the needle winding mechanism is arranged on the needle winding seat, and a guide sleeve is provided at one end of each outer needle, and the guide sleeve can slide Sleeved on the guide rod.
  • each of the half-rolling needle assemblies further includes a first elastic member, and the first elastic member is used to provide elastic force to the outer needles so that the two outer needles move along the The radial direction of the needle winding mechanism is close to each other.
  • a spring pressure plate is fixedly arranged on the needle reel seat, the first elastic member is a first spring clamped between the spring pressure plate and the outer needle, and the first spring
  • the two outer needles can be made close to each other along the radial direction of the needle winding mechanism.
  • each of the half-needle reel assemblies further includes an inner needle housing fixed to the needle reel seat, and a receiving groove is formed on the side of the inner needle housing facing away from the outer needle, the The inner clamping needle is accommodated in the accommodating groove and can move along the radial direction of the needle rolling mechanism.
  • the two ends of the containing groove are provided with pressing blocks, and the two ends of the inner pin are respectively limited between the pressing blocks and the bottom of the containing groove, each of the pressing blocks
  • a second elastic member is sandwiched between the inner clamping needles, and the second elastic member can keep the two inner clamping needles away from each other along the radial direction of the needle winding mechanism.
  • the end of the inner needle housing far away from the needle winding seat is fixedly provided with a limiting column, and the limiting column extends along the radial direction of the needle rolling mechanism and passes through the outer needle, so that A limiting portion is formed at the end of the limiting column away from the inner needle housing, and the outer needle can move along the radial direction of the needle winding mechanism until it abuts against the limiting portion.
  • each of the half needle winding assemblies further includes a third elastic member, the third elastic member is sleeved on the limiting post and clamped between the limiting portion and the outer needle. In between, the third elastic member can make the two outer needles approach along the radial direction of the needle winding mechanism.
  • a fourth elastic member is provided between the driving rod and the needle reel seat, and the fourth elastic member is used to provide elastic force to the driving rod so that the driving rod moves along the The axial retraction of the needle winding mechanism.
  • the side of the driving rod facing the outer needle is formed with a first driving surface
  • the outer needle is provided with a first roller
  • the first roller is rollingly fitted with the first driving surface , to form a first cam structure
  • the side of the drive rod facing the inner needle is formed with a second driving surface
  • the inner needle is provided with a second roller, and the second roller and the second driving surface rolling fit to form the second cam structure.
  • the first driving surface includes a first inclined section and a first parallel section, the first inclined section is oblique to the axial direction of the needle winding mechanism, and the first parallel section is along the The axial extension of the needle winding mechanism, the driving rod is pushed along the axial direction of the needle winding mechanism, so that the first roller can pass through the first inclined section and the first parallel section in sequence;
  • the second driving surface includes a second inclined section and a second parallel section, the second inclined section is oblique to the axial direction of the needle rolling mechanism, and the second parallel section is along the axial direction of the needle rolling mechanism Extending, the driving rod is pushed along the axial direction of the needle rolling mechanism, so that the second roller can pass through the second inclined section and the second parallel section in sequence, and when the second roller rolls to the When the second parallel segment is mentioned, the two inner pins are opposed to each other.
  • the first roller is located at the first inclined section .
  • it further includes a push plate, the push plate is slidably installed on the needle winding seat along the axial direction of the needle winding mechanism, and the push plate is provided with a claw connected to the driving rod , by operating the push plate, the claw can drive the driving rod to retreat along the axial direction of the needle winding mechanism.
  • a winding machine comprising:
  • a driving mechanism capable of driving the needle rolling mechanism to rotate around the axial direction
  • the adjustment mechanism can drive the driving rod to advance along the axial direction of the needle winding mechanism, so as to adjust the circumference of the needle winding mechanism.
  • the above needle rolling mechanism and winding machine push the driving rod in the axial direction, and the inner clamping needle can be driven to move radially through the second cam structure until the two inner clamping needles clamp the material strip to be wound.
  • the clamped material tape can be wound around the outer periphery of the needle winding mechanism.
  • the driving rod can be continuously pushed along the axial direction of the needle winding mechanism, and the first cam structure will drive the outer needle to move radially and keep the two outer needles away from each other, so that the needle winding mechanism Girth increases. It can be seen that both clamping the material strip and adjusting the circumference of the needle winding mechanism can be realized by moving the driving rod. Therefore, the structures of the above-mentioned needle rolling mechanism and the winding machine can be significantly simplified.
  • Fig. 1 is the front view of the needle rolling mechanism in the preferred embodiment of the present application
  • Fig. 2 is a right side view of the needle winding mechanism shown in Fig. 1;
  • Fig. 3 is a top view of the needle rolling mechanism shown in Fig. 1;
  • Fig. 4 is a sectional view along A-A of the needle rolling mechanism shown in Fig. 3;
  • Fig. 5 is an enlarged schematic view of part B of the needle winding mechanism shown in Fig. 4 .
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • a first feature being "on” or “under” a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the present application provides a winding machine and a needle winding mechanism 10 .
  • the winding machine includes a needle winding mechanism 10, a driving mechanism (not shown in the figure) and an adjusting mechanism (not shown in the figure).
  • the driving mechanism can be composed of a motor and its supporting transmission structure.
  • the needle winding mechanism 10 is roughly elongated, and the driving mechanism can drive the needle winding mechanism 10 to rotate around the axial direction, so as to wind the material tape around the outer periphery of the needle winding mechanism 10, and finally obtain a material roll, such as a battery cell.
  • the adjusting mechanism can adjust the circumference of the needle winding mechanism 10, so that the winding machine can be used to produce different types of electric cores.
  • the needle winding mechanism 10 in the preferred embodiment of the present application includes a needle winding base 100 , a half needle winding assembly 200 and a driving rod 300 .
  • the needle winding stand 100 plays a supporting role, and the half needle winding assembly 200 and the driving rod 300 are installed on the needle winding stand 100 .
  • Each half of the needle winding assembly 200 is substantially elongated and extends along the axial direction of the needle winding mechanism 10 , that is, the left-right direction shown in FIG. 1 .
  • Each half needle winding assembly 200 includes an outer needle 210 and an inner clamping needle 220.
  • the outer needle 210 and the inner clamping needle 220 are all installed on the needle winding seat 100 and can move along the radial direction of the needle winding mechanism 10. That is, the vertical movement shown in FIG. 1 .
  • Both the outer needle 210 and the inner clamping needle 220 can be elongated plate structures, and the extending direction thereof is consistent with the axial direction of the needle rolling mechanism 10 .
  • the inner clamping needle 220 is located inside the outer needle 210 , so the inner clamping needles 220 in the two half needle roll assemblies 200 are oppositely arranged.
  • the needle winding seat 100 is provided with a guide rod 110 extending radially of the needle winding mechanism 10, and one end of each outer needle 210 is provided with a guide sleeve 211, and the guide sleeve 211 is slidably sleeved on guide rod 110 .
  • the guide rod 110 is arranged in the installation cavity of the needle winding seat 100 , and the guide sleeves 211 on the two outer needles 210 cooperate with the guide rod 110 to make the outer needles 210 move more smoothly along the radial direction of the needle winding mechanism 10 .
  • the end of each outer needle 210 is provided with two guide sleeves 211, and the two guide sleeves 211 are respectively sleeved on the two guide rods 110, so the support of the guide rods 110 to the outer needle 210 is more balanced.
  • each half needle assembly 200 also includes an inner needle housing 230 fixed on the needle reel stand 100, and a receiving groove (not shown) is formed on the side of the inner needle housing 230 facing away from the outer needle 210.
  • the clamping needle 220 is accommodated in the receiving groove and can move along the radial direction of the needle winding mechanism 10 .
  • the inner needle housing 230 can also be a strip-shaped plate structure, and its extending direction is consistent with the axial direction of the needle winding mechanism 10 .
  • the inner needle shells 230 of the two half-needle winding assemblies 200 can be respectively fixed on the needle winding base 100 through a first fixing block (not shown in the figure) and a second fixing block (not shown in the figure).
  • the inner needle shell 230 can accommodate and limit the inner clamping needle 220, and the inner needle shell 230 can separate the outer needle 210 from the inner clamping needle 220, so as to avoid the mutual influence between the two during the moving process.
  • pressure blocks 231 are provided at both ends of the containing groove, and the two ends of the inner pin 220 are respectively limited between the pressure blocks 231 and the bottom of the containing groove.
  • the pressing block 231 can be fastened to the inner needle housing 230 by screws, and the gap between the pressing block 231 and the bottom of the receiving groove defines the moving range of the inner clamping needle 220 .
  • the end of the inner needle housing 230 away from the needle winding seat 100 is fixedly provided with a limit post 260, the limit post 260 extends in the radial direction of the needle winding mechanism 10 and passes through the outer needle 210, the limit post 260 The end of 260 away from the inner needle housing 230 forms a limiting portion 261 , and the outer needle 210 can move along the radial direction of the needle winding mechanism 10 until it abuts against the limiting portion 261 .
  • the limit column 260 can be fastened to the corresponding inner needle shell 230 by screws, and an annular protrusion can be formed at the end away from the inner needle shell 230 as the limit portion 261 . As shown in FIG. 4 , the orientations of the two limiting posts 260 are opposite.
  • the upper limiting column 260 can prevent the upper outer needle 210 from moving upwards, and the lower limiting column 260 can prevent the lower outer needle 210 from continuing to move downward. That is to say, the limit post 260 can limit the movement range of the two outer needles 210 along the radial direction of the needle winding mechanism 10 .
  • the limit post 260 and the guide rod 110 can be guided from both ends of the outer needle 210 respectively, so that the outer needle 210 can move more smoothly in the radial direction.
  • the drive rod 300 is provided with a strip-shaped avoidance hole (not shown in the figure). The avoidance hole extends along the axial direction of the needle winding mechanism 10 , allows the limiting post 260 to pass through and allows the limiting post 260 to slide axially.
  • the outer needle 210 and the inner clamping needle 220 can also be installed on the needle roll holder 100 in other ways, such as the cooperation between the guide rail and the slider, and the cooperation between the chute and the slider, and realize the needle winding mechanism along the 10 radial moves.
  • the driving rod 300 is disposed between the outer needle 210 and the inner clamping needle 220 , and can reciprocate along the axial direction of the needle winding mechanism 10 . Since there are two half-rolling needle assemblies 200 , there are also two driving rods 300 , which are respectively disposed between the outer needle 210 and the inner clamping needle 220 of the two half-rolling needle assemblies 200 .
  • the driving rod 300 is generally an elongated plate structure, and its extending direction is consistent with the axial direction of the needle winding mechanism 10 .
  • the structures of the two driving rods 300 can be identical. During use, the two driving rods 300 can synchronously reciprocate along the axial direction of the needle winding mechanism 10 .
  • the side of the driving rod 300 facing the outer needle 210 cooperates with the outer needle 210 to form the first cam structure 410
  • the side of the driving rod 300 facing the inner clamping needle 220 cooperates with the inner clamping needle 220 to form the second cam structure 420
  • the driving rod 300 advances along the axial direction of the needle winding mechanism 10, and can drive the two outer needles 210 away from each other along the radial direction of the needle winding mechanism 10 through the first cam structure 410, and drive the two inner needles 210 through the second cam structure 420.
  • the clamping needles 220 are close to each other along the radial direction of the needle rolling mechanism 10 .
  • the driving direction of the driving rod 300 can be left or right as shown in FIG. 4 .
  • the advancing direction of the driving rod 300 is to the left, while the retracting direction is to the right.
  • the upper driving rod 300 shown in FIG. 4 when the upper driving rod 300 shown in FIG. 4 is pushed to the left, it can drive the outer needle 210 to move upward through the first cam structure 410, and drive the inner clamp needle 220 to move downward through the second cam structure 420;
  • the driving rod 300 is pushed to the left, the outer needle 210 can be driven to move downward through the first cam structure 410 , and the inner clamp needle 220 can be driven to move upward through the second cam structure 420 .
  • each driving rod 300 can form a plurality of first cam structures 410 and a plurality of second cam structures 420 respectively. As shown in FIG. 4 , in the extending direction of the driving rod 300 , two first cam structures 410 and two second cam structures 420 are respectively formed between each driving rod 300 and the outer needle 210 and the inner clamping needle 220 .
  • the second cam structure 420 can firstly drive the two inner clamping pins 220 to approach and clamp the material tape to be wound.
  • the clamped material tape can be wound around the outer periphery of the needle winding mechanism 10 .
  • the adjustment mechanism can continue to push the driving rod 300 along the axial direction of the needle winding mechanism 10, and the first cam structure 410 will drive the outer needles 210 to move radially and keep the two outer needles 210 away from each other. , so that the circumference of the needle winding mechanism 10 increases.
  • the driving rod 300 can be retreated along the axial direction of the needle winding mechanism 10 .
  • the two outer needles 210 are brought close to each other to reduce the circumference of the needle winding mechanism 10 . In this way, it will be beneficial to pull the needle winding mechanism 10 out of the wound battery core, and will not take the separator of the inner layer of the battery core away to cause wrinkles and the like.
  • the two inner clamping pins 220 are separated from each other to loosen the tape, and then the battery cell can be unloaded.
  • each half needle rolling assembly 200 further includes a first elastic member 240, and the first elastic member 240 is used to provide elastic force to the outer needles 210 so that the two outer needles 210 are rolled along.
  • the radial directions of the needle mechanism 10 are close to each other.
  • the two outer needles 210 are respectively provided with elastic force by two first elastic members 240 .
  • the upper first elastic member 240 exerts a downward elastic force on the upper outer needle 210
  • the lower first elastic member 240 exerts an upward elastic force on the lower outer needle 210 .
  • the two outer needles 210 can be reset under the action of the first elastic member 240 , thereby reducing the circumference of the needle rolling mechanism 10 .
  • the spring pressing plate 120 is fixedly arranged on the needle reel seat 100
  • the first elastic member 240 is a first spring clamped between the spring pressing plate 120 and the outer needle 210, and the first spring can make the two The two outer needles 210 are close to each other along the radial direction of the needle winding mechanism 10 .
  • the first spring is compressed; and when the driving rod 300 retracts along the axial direction of the needle winding mechanism 10, the first spring will reset, thereby driving The two outer needles 210 are close to each other.
  • each half needle reel assembly 200 further includes a third elastic member 270, and the third elastic member 270 is sleeved on the limiting column 260 and clamped at the limiting part. Between 261 and the outer needles 210 , the third elastic member 270 can make the two outer needles 210 approach along the radial direction of the needle winding mechanism 10 .
  • the third elastic member 270 may be a third spring.
  • the third elastic member 270 When the two outer needles 210 are driven away from each other by the first cam structure 410, the third elastic member 270 will be compressed; will reset, thereby driving the two outer needles 210 closer together.
  • the first spring can cooperate with the third elastic member 270 to provide elastic force to the outer needle 210 from both ends of the outer needle 210 respectively. As shown in Figure 4, the first spring acts on the left end of the outer needle 210, and the third elastic member 270 acts on the right end of the outer needle 210, so the force applied to the outer needle 210 is relatively balanced, which is more conducive to making the outer needle 210 Reset smoothly.
  • each half needle winding assembly 200 further includes a second elastic member 250, and the second elastic member 250 is used to provide elastic force to the inner clamping needles 220 so that the two inner clamping needles 220 move along the needle winding mechanism 10. radially away from each other.
  • the two inner pins 220 are respectively provided with elastic force by the two second elastic members 250 .
  • the upper second elastic member 250 exerts an upward elastic force on the upper inner clip needle 220
  • the lower second elastic member 250 exerts a downward elastic force on the lower inner clip needle 220 .
  • the two inner clamping needles 220 can be reset under the action of the second elastic member 250, thereby driving the two inner clamping needles 220 away from each other to loosen Clamped strip.
  • the second elastic member 250 may be a second spring, and the second elastic member 250 is sandwiched between each pressing block 231 and the inner pin 220 .
  • the second spring is compressed in the radial direction of the needle winding mechanism 10; , the second spring will reset, thereby driving the two inner clip pins 220 away from each other.
  • the first cam structure 410 and the second cam structure 420 may also be configured to be bidirectionally driven. That is, when the driving rod 300 retreats in the axial direction of the needle winding mechanism 10 , the first cam structure 410 can drive the two outer needles 210 to approach, and the second cam structure 420 can drive the two inner clamping needles 220 to move away. At this time, the first elastic member 240 , the second elastic member 250 and the third elastic member 270 do not need to be provided.
  • the adjustment mechanism that pushes the driving rod 300 along the axial direction of the needle winding mechanism 10 generally only abuts against the driving rod 300 instead of being fixedly connected. Therefore, the adjustment mechanism can only push the driving rod 300 in one direction, but cannot drive the driving rod 300 to reversely move along the axial direction of the needle winding mechanism 10 to achieve retraction.
  • a fourth elastic member 500 is provided between the driving rod 300 and the needle holder 100, and the fourth elastic member 500 is used to provide elastic force to the driving rod 300, so that The driving rod 300 retracts along the axial direction of the needle winding mechanism 10 .
  • one end of the drive rod 300 is connected to a spring guide post 310, a spring sleeve 130 is provided on the needle reel seat 100, and the fourth elastic member 500 is a fourth spring sleeved on the spring guide post 310.
  • the spring guide post 310 is inserted into the spring sleeve 130 and makes the fourth spring abut against the spring sleeve 130 .
  • the fourth spring when the driving rod 300 is pushed forward, the fourth spring will be compressed in the axial direction of the needle winding mechanism 10, thereby generating a reverse elastic force.
  • the driving rod 300 can be reset and retracted under the action of the elastic force.
  • the spring guide post 310 cooperates with the spring sleeve 130 to limit and guide the compression direction of the fourth spring, so that the elastic force generated by the fourth spring can more accurately point to the axial direction of the needle winding mechanism 10 .
  • the needle winding mechanism 10 further includes a push plate 600, the push plate 600 is slidably mounted on the needle winding seat 100 along the axial direction of the needle winding mechanism, and the push plate 600 is provided with
  • the finger 610 connected to the driving rod 300 can be driven back along the axial direction of the needle rolling mechanism 10 by the finger 610 driven by the pushing plate 600 .
  • a fixing seat (not shown in the figure) is provided on the needle reel seat 100, and a second guide sleeve 140 is arranged on the fixing seat, and a second guide rod 150 is slidably arranged in the second guide sleeve 140, and the second guide rod 150
  • One end is provided with a push plate 600 .
  • the push plate 600 is in the shape of a ring and is arranged around the circumference of the needle hub 100 .
  • the claw 610 can pass through the opening on the outer needle 210 and be inserted into the driving rod 300 .
  • the driving rod 300 can be driven back by applying a force to the push plate 600 .
  • the action force can be provided by a push block disposed opposite to the push plate 600 and a cylinder connected to the push block, and of course the push plate 600 can also be operated manually.
  • the side of the driving rod 300 facing the outer needle 210 is formed with a first driving surface 411, and the outer needle 210 is provided with a first roller 412.
  • the first roller 412 Rollingly fit with the first driving surface 411 to form the first cam structure 410;
  • the side of the driving rod 300 facing the inner clamp needle 220 is formed with a second driving surface 421, and the inner clamp needle 220 is provided with a second roller 422, the second roller 422 rolls with the second driving surface 421 to form the second cam structure 420 .
  • the second roller 422 is disposed on the upper surface of the inner pin 220 .
  • the inner needle housing 230 is provided with a place-avoiding hole for the second roller 422 to pass through.
  • Both the first driving surface 411 and the second driving surface 421 extend along the axial direction of the needle winding mechanism 10 , and along the extending direction, the heights of the first driving surface 411 and the second driving surface 421 tend to become larger or smaller. Therefore, when the driving rod 300 moves along the axial direction of the needle winding mechanism 10 and forces the first roller 412 and the second roller 422 to roll along the first driving surface 411 and the second driving surface 421 respectively, the first roller 412 will drive the outer needle. 210 moves upward along the radial direction of the needle rolling mechanism 10 , and the second roller 422 will drive the inner clamping needle 220 to move downward along the radial direction of the needle rolling mechanism 10 .
  • first roller 412 and the first driving surface 411 and the positions of the second roller 422 and the second driving surface 421 can be exchanged.
  • first cam structure 410 and the second cam structure 420 may also adopt other implementation manners. For example, the way the wedge fits into the wedge and the way the cam fits into the cam plate with the cam groove.
  • the first driving surface 411 includes a first inclined section 4111 and a first parallel section 4112, the first inclined section 4111 is oblique to the axial direction of the needle winding mechanism 10, and the first parallel section 4112 is along the axis of the needle winding mechanism. 10 extends in the axial direction, the driving rod 300 advances in the axial direction of the needle winding mechanism 10 , so that the first roller 412 passes through the first inclined section 4111 and the first parallel section 4112 in sequence.
  • the distance between the two outer needles 210 gradually increases until the first roller 412 rolls to the first parallel section 4112, and the distance between the two outer needles 210 will also decrease. Reaches the maximum value. At this time, the circumference of the needle winding mechanism 10 is the largest. After the first roller 412 rolls to the first parallel section 4112, the small range of movement of the driving rod 300 will not affect the distance between the two outer needles 210, so the circumference of the needle winding mechanism 10 can remain stable. Moreover, the first roller 412 can stay at any position of the first inclined section 4111 , so that the circumference of the needle winding mechanism 10 can be continuously adjusted.
  • the first driving surface 411 may also be designed to include multiple horizontal sections with different heights, and two adjacent horizontal sections are connected by inclined sections. At this time, the first driving surface 411 is in a stepped shape, and each horizontal section corresponds to an adjustable circumference of the needle winding mechanism 10 .
  • the second driving surface 421 includes a second inclined section 4211 and a second parallel section 4212, the second inclined section 4211 is oblique to the axial direction of the needle rolling mechanism 10, and the second parallel section 4212 is along the axial direction of the needle rolling mechanism 10 Extending, the driving rod 300 is pushed along the axial direction of the needle winding mechanism 10, so that the second roller 422 can pass through the second inclined section 4211 and the second parallel section 4212 in sequence, and roll to the second parallel section 4212 after the second roller 422 , the two inner pins 220 resist each other.
  • the inclined direction of the second inclined section 4211 is opposite to that of the first inclined section 4111 .
  • the distance between the two inner pins 220 gradually decreases until the second roller 422 rolls to the second parallel section 4212, and the two inner pins 220 resist each other, thereby Capable of clamping the strip.
  • the small range of movement of the driving rod 300 will not affect the distance between the two inner clamping needles 220 . In this way, the inner clamping needle 220 can more stably clamp the material strip during actual use.
  • the driving rod 300 advances along the axial direction of the needle winding mechanism 10 , when the second roller 422 enters the second parallel section 4212 , the first roller 412 is located at the first inclined section 4111 .
  • the driving rod 300 can be pushed first until the second roller 422 rolls to the second parallel section 4212 to clamp the tape; The perimeter is adjusted.
  • the above-mentioned needle rolling mechanism 10 and the winding machine push the driving rod 300 in the axial direction, and can drive the inner clamping needle 220 to move radially through the second cam structure 420 until the two inner clamping needles 220 clamp the strip to be wound. tight.
  • the needle winding mechanism 10 rotates, the clamped material tape can be wound around the outer periphery of the needle winding mechanism 10 .
  • the driving rod 300 can be continuously pushed along the axial direction of the needle winding mechanism 10, and the first cam structure 410 will drive the outer needles 210 to move radially and keep the two outer needles 210 away from each other.
  • the circumference of the needle winding mechanism 10 is increased. It can be seen that both clamping the material strip and adjusting the circumference of the needle winding mechanism 10 can be realized by moving the driving rod 300 . Therefore, the structure of the needle winding mechanism 10 and the winding machine can be significantly simplified.

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Abstract

一种卷针机构（10）及卷绕机，卷针机构（10）包括卷针座（100）、两个半卷针组件（200）及驱动杆（300）。每个半卷针组件（200）包括外针（210）及内夹针（220），外针（210）及内夹针（220）均安装于卷针座（100）并能够沿卷针机构（10）的径向移动。沿轴向推进驱动杆（300），可通过第二凸轮结构（420）驱动内夹针（220）沿径向移动，直至两个内夹针（220）将待卷绕的料带夹紧。卷针机构（10）旋转，便可将夹紧的料带卷绕于卷针机构（10）的外周。在需要调节卷针机构（10）的周长时，则可继续沿卷针机构（10）的轴向推进驱动杆（300），第一凸轮结构（410）将驱动外针（210）沿径向移动并使两个外针（210）相远离，从而使得卷针机构（10）的周长增大。可见，对料带进行夹紧以及对卷针机构（10）的周长进行调节，均可通过移动驱动杆（300）来实现。因此，卷针机构（10）及卷绕机的结构能够显著简化。

Description

卷针机构及卷绕机
相关申请
本申请要求2021年11月05日申请的，申请号为202122706043.X，名称为“卷针机构及卷绕机”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及电池制造设备技术领域，特别涉及一种卷针机构及卷绕机。
背景技术
在电芯的制备过程中，经常需要使用卷绕机对极片、隔膜等料带进行卷绕，以形成电芯。卷绕机的卷针机构能够夹紧料带，并通过旋转将料带卷绕于外周，是卷绕机的核心部件。在实际生产过程中，为了适应不同型号的电芯，还需要对卷针机构的径向尺寸进行调节，以改变卷针机构的周长。然而，现有技术中的卷针机构为了能够实现对周长进行调节，往往设置多组驱动及传动结构，从而导致结构复杂。
发明内容
基于此，有必要针对上述问题，提供一种结构简单且能够实现周长调节的卷针机构及卷绕机。
一种卷针机构，包括：
卷针座；
两个相对设置的半卷针组件，每个所述半卷针组件包括外针及内夹针，所述外针及内夹针均安装于所述卷针座并能够沿所述卷针机构的径向移动；及
设置于所述外针与所述内夹针之间的驱动杆，能够沿所述卷针机构的轴向往复移动，所述驱动杆朝向所述外针的一侧与所述外针配合构成第一凸轮结构，所述驱动杆朝向所述内夹针的一侧与所述内夹针配合构成第二凸轮结构；
其中，所述驱动杆沿所述卷针机构的轴向推进，能够通过所述第一凸轮结 构驱动两个所述外针沿所述卷针机构的径向相远离，并通过所述第二凸轮结构驱动两个所述内夹针沿所述卷针机构的径向相靠近。
在其中一个实施例中，所述卷针座的上设置有沿所述卷针机构的径向延伸的导向杆，每个所述外针的一端设置有导向套，且所述导向套可滑动地套设于所述导向杆。
在其中一个实施例中，每个所述半卷针组件还包括第一弹性件，所述第一弹性件用于对所述外针提供弹性力，以使两个所述外针沿所述卷针机构的径向相靠近。
在其中一个实施例中，所述卷针座上固定设置有弹簧压板，所述第一弹性件为夹持于所述弹簧压板与所述外针之间的第一弹簧，所述第一弹簧能够使两个所述外针沿所述卷针机构的径向相靠近。
在其中一个实施例中，每个所述半卷针组件还包括固定于所述卷针座的内针壳，所述内针壳背向所述外针的一侧形成有容纳槽，所述内夹针收容于所述容纳槽并能够沿所述卷针机构的径向移动。
在其中一个实施例中，所述容纳槽的两端设置有压块，所述内夹针的两端分别限位于所述压块与所述容纳槽的底部之间，每个所述压块与所述内夹针之间夹设有第二弹性件，所述第二弹性件能够使两个所述内夹针沿所述卷针机构的径向相远离。
在其中一个实施例中，所述内针壳远离所述卷针座的一端固定设置有限位柱，所述限位柱沿所述卷针机构的径向延伸并穿过所述外针，所述限位柱远离所述内针壳的一端形成有限位部，所述外针能够沿所述卷针机构的径向移动至与所述限位部抵持。
在其中一个实施例中，每个所述半卷针组件还包括第三弹性件，所述第三弹性件套设于所述限位柱并夹持于所述限位部与所述外针之间，所述第三弹性件能够使两个所述外针沿所述卷针机构的径向相靠近。
在其中一个实施例中，所述驱动杆与所述卷针座之间设置有第四弹性件，所述第四弹性件用于对所述驱动杆提供弹性力，以使所述驱动杆沿所述卷针机构的轴向回退。
在其中一个实施例中，所述驱动杆朝向所述外针的一侧形成有第一驱动 面，所述外针设置有第一滚轮，所述第一滚轮与所述第一驱动面滚动配合，以构成第一凸轮结构；所述驱动杆朝向所述内夹针的一侧形成有第二驱动面，所述内夹针设置有第二滚轮，所述第二滚轮与所述第二驱动面滚动配合，以构成第二凸轮结构。
在其中一个实施例中，所述第一驱动面包括第一倾斜段及第一平行段，所述第一倾斜段与所述卷针机构的轴向斜交，所述第一平行段沿所述卷针机构的轴向延伸，所述驱动杆沿所述卷针机构的轴向推进，可使所述第一滚轮依次经过所述第一倾斜段及所述第一平行段；
所述第二驱动面包括第二倾斜段及第二平行段，所述第二倾斜段与所述卷针机构的轴向斜交，所述第二平行段沿所述卷针机构的轴向延伸，所述驱动杆沿所述卷针机构的轴向推进，可使所述第二滚轮依次经过所述第二倾斜段及所述第二平行段，且在所述第二滚轮滚动至所述第二平行段时，两个所述内夹针相抵持。
在其中一个实施例中，随着所述驱动杆沿所述卷针机构的轴向推进，所述第二滚轮进入所述第二平行段时，所述第一滚轮位于所述第一倾斜段。
在其中一个实施例中，还包括推盘，所述推盘沿所述卷针机构的轴向可滑动地安装于所述卷针座，所述推盘设置有连接所述驱动杆的拨爪，通过操作所述推盘能够使所述拨爪带动所述驱动杆沿所述卷针机构的轴向回退。
一种卷绕机，包括：
如上述优选实施例中任一项所述的卷针机构；
驱动机构，能够驱动所述卷针机构绕轴向旋转；及
调节机构，能够驱动所述驱动杆沿所述卷针机构的轴向推进，以调节所述卷针机构的周长。
上述卷针机构及卷绕机，沿轴向推进驱动杆，可通过第二凸轮结构驱动内夹针沿径向移动，直至两个内夹针将待卷绕的料带夹紧。卷针机构旋转，便可将夹紧的料带卷绕于卷针机构的外周。在需要调节卷针机构的周长时，则可继续沿卷针机构的轴向推进驱动杆，第一凸轮结构将驱动外针沿径向移动并使两个外针相远离，从而使得卷针机构的周长增大。可见，对料带进行夹紧以及对卷针机构的周长进行调节，均可通过移动驱动杆来实现。因此，上述卷针机构 及卷绕机的结构能够显著简化。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述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为本申请较佳实施例中卷针机构的主视图；
图2为图1所示卷针机构的右侧视图；
图3为图1所示卷针机构的俯视图；
图4为图3所示卷针机构沿A-A的剖视图；
图5为图4所示卷针机构中局部B的放大示意图。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本申请内涵的情况下做类似改进，因此本申请不受下面公开的具体实施例的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”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，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、 “固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
请参阅图1，本申请提供了一种卷绕机及卷针机构10。其中，卷绕机包括卷针机构10、驱动机构(图未示)及调节机构(图未示)。
驱动机构可以由电机及其配套的传动结构组成。卷针机构10大致呈长条形，驱动机构能够驱动卷针机构10绕轴向旋转，从而将料带卷绕于卷针机构10的外周，并最终得到料卷，如电芯。调节机构则能够调节卷针机构10的周长，以使卷绕机能够用于生产不同型号的电芯。
请一并参阅图2及图3，本申请较佳实施例中的卷针机构10包括卷针座100、半卷针组件200及驱动杆300。
卷针座100起支撑作用，半卷针组件200及驱动杆300均安装于卷针座100上。半卷针组件200为两个，两个半卷针组件200相对设置。每个半卷针组件200大致呈长条形，且均沿卷针机构10的轴向，即图1所示的左右方向延伸。
请一并参阅图4，每个半卷针组件200包括外针210及内夹针220，外针 210及内夹针220均安装于卷针座100并能够沿卷针机构10的径向，即图1所示的上下方向移动。外针210及内夹针220均可为长条形的板状结构，其延伸方向与卷针机构10的轴向一致。在同一个半卷针组件200中，内夹针220位于外针210的内侧，故两个半卷针组件200中的内夹针220相对设置。
在本实施例中，卷针座100上设置有沿卷针机构10的径向延伸的导向杆110，每个外针210的一端设置有导向套211，且导向套211可滑动地套设于导向杆110。
导向杆110设置于卷针座100的安装腔内，两个外针210上的导向套211与导向杆110配合，能够使外针210更顺畅地沿卷针机构10的径向进行移动。此外，卷针座100上的导向杆110设置为两个，两个导向杆110并列设置。而且，每个外针210的末端均设置有两个导向套211，两个导向套211分别套设于两个导向杆110上，故导向杆110对外针210的支撑更平衡。
在本实施例中，每个半卷针组件200还包括固定于卷针座100的内针壳230，内针壳230背向外针210的一侧形成有容纳槽(图未标)，内夹针220收容于容纳槽并能够沿卷针机构10的径向移动。
内针壳230也可为长条形的板状结构，其延伸方向与卷针机构10的轴向一致。两个半卷针组件200的内针壳230可分别通过第一固定块(图未标)及第二固定块(图未标)固定于卷针座100上。内针壳230能够对内夹针220起到收容及限位作用，且内针壳230能够将外针210与内夹针220隔开，以避免两者在移动过程中相互影响。
更具体的，容纳槽的两端设置有压块231，内夹针220的两端分别限位于压块231与容纳槽的底部之间。压块231可通过螺钉紧固于内针壳230，压块231与容纳槽的底部之间的间隙限定了内夹针220的移动范围。
进一步的，在本实施例中，内针壳230远离卷针座100的一端固定设置有限位柱260，限位柱260沿卷针机构10的径向延伸并穿过外针210，限位柱260远离内针壳230的一端形成有限位部261，外针210能够沿卷针机构10的径向移动至与限位部261抵持。
限位柱260可通过螺钉紧固于对应的内针壳230上，其远离内针壳230的一端可以形成环形凸起，以作为限位部261。如图4所示，两个限位柱260 的朝向相反。上方的限位柱260能够阻止上方的外针210继续向上移动，而下方的限位柱260能够阻止下方的外针210继续向下移动。也就是说，限位柱260能够对两个外针210沿卷针机构10径向的移动范围进行限制。
而且，限位柱260与导向杆110能够分别从外针210的两端进行导向，故可使得外针210沿径向移动时更顺畅。此外，驱动杆300上设置有长条形的避让孔(图未标)。该避让孔沿卷针机构10的轴向延伸，可供限位柱260穿过并允许限位柱260沿轴向滑动。
显然，在其他实施例中，外针210及内夹针220还可通过其他方式，如导轨与滑块配合、滑槽与滑块配合等方式安装于卷针座100，并实现沿卷针机构10的径向移动。
驱动杆300设置于外针210与内夹针220之间，并能够沿卷针机构10的轴向往复移动。由于半卷针组件200为两个，故驱动杆300也为两个，且分别设置于两个半卷针组件200的外针210与内夹针220之间。驱动杆300一般为长条形的板状结构，其延伸方向与卷针机构10的轴向一致。两个驱动杆300的结构可以完全相同，在使用过程中，两个驱动杆300能够同步沿卷针机构10的轴向往复移动。
进一步的，驱动杆300朝向外针210的一侧与外针210配合构成第一凸轮结构410，驱动杆300朝向内夹针220的一侧与内夹针220配合构成第二凸轮结构420。而且，驱动杆300沿卷针机构10的轴向推进，能够通过第一凸轮结构410驱动两个外针210沿卷针机构10的径向相远离，并通过第二凸轮结构420驱动两个内夹针220沿卷针机构10的径向相靠近。
驱动杆300的推进方向可以如图4所示的向左，也可向右。具体在本实施例中，驱动杆300的推进的方向向左，而回退的方向向右。更具体的，图4所示上方的驱动杆300向左推进时，能够通过第一凸轮结构410驱动外针210向上移动，并通过第二凸轮结构420驱动内夹针220向下移动；而下方的驱动杆300向左推进时，能够通过第一凸轮结构410驱动外针210向下移动，并通过第二凸轮结构420驱动内夹针220向上移动。
为了使外针210及内夹针220在沿卷针机构10的径向移动时受力更均衡，每个驱动杆300可分别形成多个第一凸轮结构410及多个第二凸轮结构420。 如图4所示，在驱动杆300的延伸方向上，每个驱动杆300与外针210及内夹针220之间分别形成有两个第一凸轮结构410及两个第二凸轮结构420。
在卷绕料带时，可先通过第二凸轮结构420驱动两个内夹针220靠近，并将待卷绕的料带夹紧。卷针机构10旋转，便可将夹紧的料带卷绕于卷针机构10的外周。在需要调节卷针机构10的周长时，调节机构可继续沿卷针机构10的轴向推进驱动杆300，第一凸轮结构410将驱动外针210沿径向移动并使两个外针210相远离，从而使得卷针机构10的周长增大。
当料带卷绕呈所需的电芯后，可先使驱动杆300沿卷针机构10的轴向回退。接着，使两个外针210相互靠近以减小卷针机构10的周长。如此，将有利于将卷针机构10从卷绕完成的电芯内抽离，且不会将电芯内层的隔膜带离以导致出现揉皱等现象。最后，使两个内夹针220相互远离以松开料带，便可对电芯进行下料。
请再次参阅图2，在本实施例中，每个半卷针组件200还包括第一弹性件240，第一弹性件240用于对外针210提供弹性力，以使两个外针210沿卷针机构10的径向相靠近。
两个外针210分别由两个第一弹性件240提供弹性力。如图2所示，上方的第一弹性件240对上方的外针210施加向下的弹性力，而下方的第一弹性件240对下方的外针210施加向上的弹性力。如此，当驱动杆300沿卷针机构10的轴向回退后，两个外针210便可在第一弹性件240的作用下复位，从而减小卷针机构10的周长。
进一步的，在本实施例中，卷针座100上固定设置有弹簧压板120，第一弹性件240为夹持于弹簧压板120与外针210之间的第一弹簧，第一弹簧能够使两个外针210沿卷针机构10的径向相靠近。当两个外针210在第一凸轮结构410的驱动下相远离时，第一弹簧被压缩；而当驱动杆300沿卷针机构10的轴向回退后，第一弹簧将复位，从而驱使两个外针210相互靠近。
更进一步的，请再次参阅图4，在本实施例中，每个半卷针组件200还包括第三弹性件270，第三弹性件270套设于限位柱260并夹持于限位部261与外针210之间，第三弹性件270能够使两个外针210沿卷针机构10的径向相靠近。
第三弹性件270可以是第三弹簧。当两个外针210在第一凸轮结构410的驱动下相远离时，第三弹性件270将被压缩；而当驱动杆300沿卷针机构10的轴向回退后，第三弹性件270将复位，从而驱使两个外针210相靠近。更具体的，第一弹簧能够与第三弹性件270共同作用，分别从外针210的两端对外针210提供弹性力。如图4所示，第一弹簧作用于外针210的左端，第三弹性件270作用于外针210的右端，故针对外针210施加的作用力较为均衡，更有助于使外针210顺利复位。
在本实施例中，每个半卷针组件200还包括第二弹性件250，第二弹性件250用于对内夹针220提供弹性力，以使两个内夹针220沿卷针机构10的径向相远离。
两个内夹针220分别由两个第二弹性件250提供弹性力。如图4所示，上方的第二弹性件250对上方的内夹针220施加向上的弹性力，而下方的第二弹性件250对下方的内夹针220施加向下的弹性力。如此，当驱动杆300沿卷针机构10的轴向回退后，两个内夹针220便可在第二弹性件250的作用下复位，从而驱使两个内夹针220相远离以松开被夹紧的料带。
更具体的，第二弹性件250可以为第二弹簧，每个压块231与内夹针220之间均夹设有第二弹性件250。当两个内夹针220在第二凸轮结构420的驱动下相靠近时，第二弹簧沿卷针机构10的径向被压缩；而当驱动杆300沿卷针机构10的轴向回退后，第二弹簧将复位，从而驱使两个内夹针220相远离。
需要指出的是，在其他实施例中，也可将第一凸轮结构410及第二凸轮结构420设置成能够双向驱动的形式。即，当驱动杆300沿卷针机构10的轴向回退时，第一凸轮结构410能够驱动两个外针210相靠近，第二凸轮结构420能够驱动两个内夹针220相远离。此时，将无需设置第一弹性件240、第二弹性件250及第三弹性件270。
由于卷针机构10在使用过程中需要不断旋转，故推动驱动杆300沿卷针机构10的轴向推进的调节机构一般仅与驱动杆300抵接而非固接。因此，调节机构只能单向推动驱动杆300，而无法带动驱动杆300沿卷针机构10的轴向反向移动以实现回退。
为了使驱动杆300能够顺利复位，在本实施例中，驱动杆300与卷针座 100之间设置有第四弹性件500，第四弹性件500用于对驱动杆300提供弹性力，以使驱动杆300沿卷针机构10的轴向回退。
进一步的，在本实施例中，驱动杆300的一端连接有弹簧导柱310，卷针座100上设置有弹簧套130，第四弹性件500为套设于弹簧导柱310的第四弹簧，弹簧导柱310插设于弹簧套130并使第四弹簧与弹簧套130抵接。
具体的，驱动杆300推进时会将第四弹簧沿卷针机构10的轴向压缩，从而产生反向的弹性力。当推动驱动杆300推进的调节机构回撤，驱动杆300便可在该弹性力的作用下复位回退。弹簧导柱310与弹簧套130配合，能够对第四弹簧的压缩方向进行限制及导向，从而使得第四弹簧产生的弹性力能够更加精确地指向卷针机构10的轴向。
请再次参阅图1及图3，在本实施例中，卷针机构10还包括推盘600，推盘600沿卷针机构的轴向可滑动地安装于卷针座100，推盘600设置有连接驱动杆300的拨爪610，通过操作推盘600能够使拨爪610带动驱动杆300沿卷针机构10的轴向回退。
具体的，卷针座100上设置有固定座(图未标)，固定座上设置有第二导向套140，第二导向套140内滑动设置有第二导向杆150，第二导向杆150的一端设置有推盘600。推盘600呈圆环状，并绕卷针座100的周向设置。拨爪610可穿过外针210上开设的缺口，并插入驱动杆300。当第四弹性件500出现卡死等状况而不能顺利驱使驱动杆300回退时，可通过对推盘600施加一作用力而带动驱动杆300回退。该作用力可通过与推盘600相对设置的推块及连接推块的气缸提供，当然也可人工操作推盘600。
请一并参阅图5并再次参阅图4，在本实施例中，驱动杆300朝向外针210的一侧形成有第一驱动面411，外针210设置有第一滚轮412，第一滚轮412与第一驱动面411滚动配合，以构成第一凸轮结构410；驱动杆300朝向内夹针220的一侧形成有第二驱动面421，内夹针220设置有第二滚轮422，第二滚轮422与第二驱动面421滚动配合，以构成第二凸轮结构420。
以如图4所示上方的半卷针组件200为例，第一驱动面411形成于驱动杆300的上表面，第一滚轮412设置于外针210的下表面；第二驱动面421形成于驱动杆300的下表面，第二滚轮422设置于内夹针220的上表面。而且，内 针壳230上开设有供第二滚轮422穿过的避位孔。
第一驱动面411及第二驱动面421均沿卷针机构10的轴向延伸，且在延伸方向上，第一驱动面411及第二驱动面421的高度具有变大或变小的趋势。因此，当驱动杆300沿卷针机构10的轴向移动并迫使第一滚轮412及第二滚轮422分别沿第一驱动面411及第二驱动面421滚动时，第一滚轮412将带动外针210沿卷针机构10的径向向上移动，而第二滚轮422将带动内夹针220沿卷针机构10的径向向下移动。
图4所示下方的半卷针组件200及驱动杆300与上方的半卷针组件200及驱动杆300呈镜像对称的关系，故在此不再赘述。
需要指出的是，在其他实施例中，第一滚轮412与第一驱动面411的位置以及第二滚轮422与第二驱动面421的位置均可调换。显然，第一凸轮结构410及第二凸轮结构420也可采用其他实现方式。譬如，楔形块与楔形块配合的方式以及凸轮与带凸轮槽的凸轮板配合的方式。
具体在本实施例中，第一驱动面411包括第一倾斜段4111及第一平行段4112，第一倾斜段4111与卷针机构10的轴向斜交，第一平行段4112沿卷针机构10的轴向延伸，驱动杆300沿卷针机构10的轴向推进，可使第一滚轮412依次经过第一倾斜段4111及第一平行段4112。
第一滚轮412沿第一倾斜段4111滚动的过程中，两个外针210的距离逐渐增大，直至第一滚轮412滚动至第一平行段4112，两个外针210之间的距离也将达到最大值。此时，卷针机构10的周长最大。第一滚轮412滚动至第一平行段4112后，驱动杆300小范围的移动将不会对两个外针210之间的距离造成影响，故卷针机构10的周长可保持稳定。而且，第一滚轮412能够停留在第一倾斜段4111的任一位置，从而可对卷针机构10的周长实现连续调节。
显然，在其他实施例中，第一驱动面411也可设计成包括多段高度不同的水平段，且相邻两个水平段之间通过倾斜段连接。此时，第一驱动面411呈阶梯状，且每个水平段均对应一个卷针机构10可被调节得到的周长。
进一步的，第二驱动面421包括第二倾斜段4211及第二平行段4212，第二倾斜段4211与卷针机构10的轴向斜交，第二平行段4212沿卷针机构10的轴向延伸，驱动杆300沿卷针机构10的轴向推进，可使第二滚轮422依次经 过第二倾斜段4211及第二平行段4212，且在第二滚轮422滚动至所述第二平行段4212时，两个内夹针220相抵持。
第二倾斜段4211的倾斜方向与第一倾斜段4111相反。第二滚轮422沿第二倾斜段4211滚动的过程中，两个内夹针220的距离逐渐缩小，直至第二滚轮422滚动至第二平行段4212，两个内夹针220相互抵持，从而能够将料带夹紧。而且，在第二滚轮422位于第二平行段4212时，驱动杆300小范围的移动将不会对两个内夹针220之间的距离造成影响。如此，在实际使用过程中内夹针220能够更加稳定的夹紧料带。
进一步的，在本实施例中，随着驱动杆300沿卷针机构10的轴向推进，第二滚轮422进入第二平行段4212时，第一滚轮412位于第一倾斜段4111。
也就是说，当第二滚轮422滚动至第二平行段4212并使两个内夹针220相抵持时，第一滚轮412依然位于第一倾斜段4111。此时，继续推进驱动杆300将不能使两个内夹针220之间的距离产生变化，但可使两个外针210相远离。在实际使用过程中，可先推进驱动杆300直至第二滚轮422滚动至第二平行段4212，以将料带夹紧；接着，再根据需要继续推进驱动杆300，便可对卷针机构10的周长进行调节。
上述卷针机构10及卷绕机，沿轴向推进驱动杆300，可通过第二凸轮结构420驱动内夹针220沿径向移动，直至两个内夹针220将待卷绕的料带夹紧。卷针机构10旋转，便可将夹紧的料带卷绕于卷针机构10的外周。在需要调节卷针机构10的周长时，则可继续沿卷针机构10的轴向推进驱动杆300，第一凸轮结构410将驱动外针210沿径向移动并使两个外针210相远离，从而使得卷针机构10的周长增大。可见，对料带进行夹紧以及对卷针机构10的周长进行调节，均可通过移动驱动杆300来实现。因此，上述卷针机构10及卷绕机的结构能够显著简化。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详 细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (14)

  1. 一种卷针机构，其特征在于，包括：
    卷针座(100)；
    两个相对设置的半卷针组件(200)，每个所述半卷针组件(200)包括外针(210)及内夹针(220)，所述外针(210)及内夹针(220)均安装于所述卷针座(100)并能够沿所述卷针机构的径向移动；及
    设置于所述外针(210)与所述内夹针(220)之间的驱动杆(300)，能够沿所述卷针机构的轴向往复移动，所述驱动杆(300)朝向所述外针(210)的一侧与所述外针(210)配合构成第一凸轮结构(410)，所述驱动杆(300)朝向所述内夹针(220)的一侧与所述内夹针(220)配合构成第二凸轮结构(420)；
    其中，所述驱动杆(300)沿所述卷针机构的轴向推进，能够通过所述第一凸轮结构(410)驱动两个所述外针(210)沿所述卷针机构的径向相远离，并通过所述第二凸轮结构(420)驱动两个所述内夹针(220)沿所述卷针机构的径向相靠近。
  2. 根据权利要求1所述的卷针机构，其特征在于，所述卷针座(100)上设置有沿所述卷针机构的径向延伸的导向杆(110)，每个所述外针(210)的一端设置有导向套(211)，且所述导向套(211)可滑动地套设于所述导向杆(110)。
  3. 根据权利要求1所述的卷针机构，其特征在于，每个所述半卷针组件(200)还包括第一弹性件(240)，所述第一弹性件(240)用于对所述外针(210)提供弹性力，以使两个所述外针(210)沿所述卷针机构的径向相靠近。
  4. 根据权利要求3所述的卷针机构，其特征在于，所述卷针座(100)上固定设置有弹簧压板(120)，所述第一弹性件(240)为夹持于所述弹簧压板(120)与所述外针(210)之间的第一弹簧，所述第一弹簧能够使两个所述外针(210)沿所述卷针机构的径向相靠近。
  5. 根据权利要求1所述的卷针机构，其特征在于，每个所述半卷针组件(200)还包括固定于所述卷针座(100)的内针壳(230)，所述内针壳(230)背向所述外针(210)的一侧形成有容纳槽，所述内夹针(220)收容于所述容 纳槽并能够沿所述卷针机构的径向移动。
  6. 根据权利要求5所述的卷针机构，其特征在于，所述容纳槽的两端设置有压块(231)，所述内夹针(220)的两端分别限位于所述压块(231)与所述容纳槽的底部之间，每个所述压块(231)与所述内夹针(220)之间夹设有第二弹性件(250)，所述第二弹性件(250)能够使两个所述内夹针(220)沿所述卷针机构的径向相远离。
  7. 根据权利要求5所述的卷针机构，其特征在于，所述内针壳(230)远离所述卷针座(100)的一端固定设置有限位柱(260)，所述限位柱(260)沿所述卷针机构的径向延伸并穿过所述外针(210)，所述限位柱(260)远离所述内针壳(230)的一端形成有限位部(261)，所述外针(210)能够沿所述卷针机构的径向移动至与所述限位部(261)抵持。
  8. 根据权利要求7所述的卷针机构，其特征在于，每个所述半卷针组件(200)还包括第三弹性件(270)，所述第三弹性件(270)套设于所述限位柱(260)并夹持于所述限位部(261)与所述外针(210)之间，所述第三弹性件(270)能够使两个所述外针(210)沿所述卷针机构的径向相靠近。
  9. 根据权利要求1所述的卷针机构，其特征在于，所述驱动杆(300)与所述卷针座(100)之间设置有第四弹性件(500)，所述第四弹性件(500)用于对所述驱动杆(300)提供弹性力，以使所述驱动杆(300)沿所述卷针机构的轴向回退。
  10. 根据权利要求1所述的卷针机构，其特征在于，所述驱动杆(300)朝向所述外针(210)的一侧形成有第一驱动面(411)，所述外针(210)设置有第一滚轮(412)，所述第一滚轮(412)与所述第一驱动面(411)滚动配合，以构成第一凸轮结构(410)；所述驱动杆(300)朝向所述内夹针(220)的一侧形成有第二驱动面(421)，所述内夹针(220)设置有第二滚轮(422)，所述第二滚轮(422)与所述第二驱动面(421)滚动配合，以构成第二凸轮结构(420)。
  11. 根据权利要求10所述的卷针机构，其特征在于，所述第一驱动面(411)包括第一倾斜段(4111)及第一平行段(4112)，所述第一倾斜段(4111)与所述卷针机构的轴向斜交，所述第一平行段(4112)沿所述卷针机构的轴向延 伸，所述驱动杆(300)沿所述卷针机构的轴向推进，可使所述第一滚轮(412)依次经过所述第一倾斜段(4111)及所述第一平行段(4112)；
    所述第二驱动面(421)包括第二倾斜段(4211)及第二平行段(4212)，所述第二倾斜段(4211)与所述卷针机构的轴向斜交，所述第二平行段(4212)沿所述卷针机构的轴向延伸，所述驱动杆(300)沿所述卷针机构的轴向推进，可使所述第二滚轮(422)依次经过所述第二倾斜段(4211)及所述第二平行段(4212)，且在所述第二滚轮(422)滚动至所述第二平行段(4212)时，两个所述内夹针(220)相抵持。
  12. 根据权利要求11所述的卷针机构，其特征在于，随着所述驱动杆(300)沿所述卷针机构的轴向推进，所述第二滚轮(422)进入所述第二平行段(4212)时，所述第一滚轮(412)位于所述第一倾斜段(4111)。
  13. 根据权利要求1所述的卷针机构，其特征在于，还包括推盘(600)，所述推盘(600)沿所述卷针机构的轴向可滑动地安装于所述卷针座(100)，所述推盘(600)设置有连接所述驱动杆(300)的拨爪(610)，通过操作所述推盘(600)能够使所述拨爪(610)带动所述驱动杆(300)沿所述卷针机构的轴向回退。
  14. 一种卷绕机，其特征在于，包括：
    如上述权利要求1至13任一项所述的卷针机构(10)；
    驱动机构，能够驱动所述卷针机构(10)绕轴向旋转；及
    调节机构，能够驱动所述驱动杆(300)沿所述卷针机构的轴向推进，以调节所述卷针机构的周长。
PCT/CN2021/133385 2021-11-05 2021-11-26 卷针机构及卷绕机 WO2023077579A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117401484A (zh) * 2023-12-14 2024-01-16 常州市森迈网业有限公司 布料收卷机及收卷工艺

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115084628B (zh) * 2022-08-19 2022-11-22 江苏时代新能源科技有限公司 卷针及卷绕装置
CN117650290A (zh) * 2024-01-18 2024-03-05 东莞市安洋智能科技有限公司 一种小圆柱锂电池电芯卷绕机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030183360A1 (en) * 2002-03-29 2003-10-02 Ratte Robert W. Multiple casting apparatus and method
KR20070097855A (ko) * 2006-03-29 2007-10-05 삼성에스디아이 주식회사 센터핀 및 이를 이용한 리튬 이차전지
CN109980298A (zh) * 2019-04-01 2019-07-05 无锡先导智能装备股份有限公司 卷针组件
CN111725570A (zh) * 2020-07-02 2020-09-29 深圳吉阳智能科技有限公司 自锁式卷针机构及电芯卷绕装置
CN213459849U (zh) * 2020-11-13 2021-06-15 深圳吉阳智能科技有限公司 卷针机构及卷绕机
CN113241471A (zh) * 2021-06-15 2021-08-10 安脉时代智能制造(宁德)有限公司 直驱式三卷针卷绕头装置及驱动方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101679541B1 (ko) * 2016-06-29 2016-11-24 강복환 이차전지용 전극롤 권취장치
CN113659217A (zh) * 2021-08-11 2021-11-16 无锡先导智能装备股份有限公司 卷针机构及卷绕装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030183360A1 (en) * 2002-03-29 2003-10-02 Ratte Robert W. Multiple casting apparatus and method
KR20070097855A (ko) * 2006-03-29 2007-10-05 삼성에스디아이 주식회사 센터핀 및 이를 이용한 리튬 이차전지
CN109980298A (zh) * 2019-04-01 2019-07-05 无锡先导智能装备股份有限公司 卷针组件
CN111725570A (zh) * 2020-07-02 2020-09-29 深圳吉阳智能科技有限公司 自锁式卷针机构及电芯卷绕装置
CN213459849U (zh) * 2020-11-13 2021-06-15 深圳吉阳智能科技有限公司 卷针机构及卷绕机
CN113241471A (zh) * 2021-06-15 2021-08-10 安脉时代智能制造(宁德)有限公司 直驱式三卷针卷绕头装置及驱动方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4207406A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117401484A (zh) * 2023-12-14 2024-01-16 常州市森迈网业有限公司 布料收卷机及收卷工艺
CN117401484B (zh) * 2023-12-14 2024-03-01 常州市森迈网业有限公司 布料收卷机及收卷工艺

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