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WO-2026091856-A1 - WINDING DEVICE

WO2026091856A1WO 2026091856 A1WO2026091856 A1WO 2026091856A1WO-2026091856-A1

Abstract

The present disclosure relates to a winding device. The winding device comprises: winding needle mechanisms, wherein each winding needle mechanism comprises a winding needle and a cutter, the winding needle is provided with an outer peripheral surface and an accommodating recess provided on the outer peripheral surface, the winding needle is controllably rotated to wind a material strip onto the outer peripheral surface, the cutter is disposed in the accommodating recess, the outer peripheral surface is provided with a suction region located on the upstream side of the accommodating recess, and the suction region is configured to controllably suction a passing material strip; and a material pressing mechanism, comprising a rolling assembly and a material pushing assembly, wherein the rolling assembly is used for pressing the material strip onto the corresponding outer peripheral surface, the material pushing assembly comprises a rotating portion and material pushing portions provided on the rotating portion, the rotating portion is controllably rotated so as to drive the material pushing portions to rotate to be opposite to the accommodating recess on the corresponding outer peripheral surface, the material pushing portions are used for feeding the material strip into the accommodating recess, and the cutter is used for cutting the material strip entering the accommodating recess.

Inventors

  • Sun, Pengfei
  • WANG, Fengjie

Assignees

  • 无锡先导智能装备股份有限公司

Dates

Publication Date
20260507
Application Date
20250903
Priority Date
20241029

Claims (11)

  1. A winding device, characterized in that it comprises: A needle winding mechanism (10) includes a needle winding (11) and a cutter (12). The needle winding (11) has an outer peripheral surface (110) and a receiving recess (111) formed on the outer peripheral surface (110). The needle winding (11) is controllably rotatable to wind a strip (A) onto the outer peripheral surface (110). The cutter (12) is disposed within the receiving recess (111). The outer peripheral surface (110) has an adsorption region (1101) located upstream of the receiving recess (111). The adsorption region (1101) is configured to controllably adsorb the passing strip (A). The pressing mechanism (20) includes a roller pressing assembly (21) and a pushing assembly (22). The roller pressing assembly (21) is used to press the strip (A) against the outer peripheral surface (110). The pushing assembly (22) includes a rotating part (221) and a pushing part (222) disposed on the rotating part (221). The rotating part (221) can be rotated in a controlled manner to drive the pushing part (222) to rotate to be opposite to the receiving recess (111) on the outer peripheral surface (110). The pushing part (222) is used to feed the strip (A) into the receiving recess (111). The cutter (12) is used to cut the strip (A) that has entered the receiving recess (111).
  2. According to claim 1, the winding device is characterized in that the inside of the winding needle (11) has a vacuum cavity (B), the vacuum cavity (B) is used to communicate with an external negative pressure source, and the adsorption area (1101) is provided with a plurality of adsorption holes (1102) communicating with the vacuum cavity (B).
  3. According to claim 2, the winding device is characterized in that a plurality of cavities (C) are further provided inside the winding needle (11), and each of the cavities (C) and the vacuum cavity (B) are arranged at intervals along the circumference of the winding needle (11), and each of the cavities (C) and the vacuum cavity (B) is provided with a heating element (115) near the inner wall of the outer peripheral surface (110).
  4. According to claim 3, the winding device is characterized in that a plurality of through holes (1151) are provided on the heating plate (115) located in the vacuum chamber (B), and each of the through holes (1151) is connected to the corresponding adsorption hole (1102).
  5. According to claim 3 or 4, the winding device is characterized in that the winding needle mechanism (10) further includes an electrically integrated slip ring (13), the rotor (132) of the electrically integrated slip ring (13) is fixedly connected to the winding needle (11), and the stator (131) of the electrically integrated slip ring (13) has a first vacuum connector (b1) and a first conductive connector (c1), the first vacuum connector (b1) is used to communicate with an external negative pressure source through a gas supply pipeline, and the first conductive connector (c1) is used to communicate with an external power source through a conductive line; The rotor (132) of the electro-integrated slip ring (13) has a second vacuum connector (b2) that communicates with the first vacuum connector (b1) and a second conductive connector (c2) that is electrically connected to the first conductive connector (c1). The second vacuum connector (b2) is connected to the vacuum chamber (B) through a vacuum tube, and the second conductive connector (c2) is electrically connected to each of the heating elements (115) through a wire.
  6. The winding apparatus according to any one of claims 1 to 5 is characterized in that the cutter (12) is a hot cutter.
  7. According to claim 6, the winding device is characterized in that the cutter (12) has a mounting hole, and a heating element (121) is inserted into the mounting hole.
  8. The winding device according to any one of claims 1 to 7 is characterized in that two pusher parts (222) are provided on the rotating part (221), and the two pusher parts (222) are arranged at intervals along the rotation direction of the rotating part (221) so that a gap is formed between the two pusher parts (222); When the two pusher sections (222) feed the passing material strip (A) into the receiving recess (111), the gap is used to receive the cutter (12).
  9. According to any one of claims 1 to 8, the winding device is characterized in that the pusher assembly (22) further includes a fixed seat (223), a mounting seat (224) and a first elastic member (225), the mounting seat (224) is disposed on the fixed seat (223) and is controllably close to or away from the winding needle (11) relative to the fixed seat (223), the first elastic member (225) abuts between the fixed seat (223) and the mounting seat (224) to provide a preload force that causes the mounting seat (224) to have a tendency to move closer to the winding needle (11), and the rotating part (221) is disposed on the mounting seat (224) and is controllably rotatable relative to the mounting seat (224).
  10. The winding apparatus according to any one of claims 1 to 9 is characterized in that the roller pressing assembly (21) includes a first roller pressing assembly (21a), the first roller pressing assembly (21a) having a first pressure roller (211a) rotatable about its own axis, the first roller pressing assembly (21a) controllably driving the first pressure roller (211a) to press the portion of the material strip (A) located upstream of the cutter (12) against the adsorption area (1101).
  11. The winding apparatus according to any one of claims 1 to 10 is characterized in that the roller pressing assembly (21) further includes a second roller pressing assembly (21b), the second roller pressing assembly (21b) having a second pressure roller (211b) rotatable about its own axis, the second roller pressing assembly (21b) controllably driving the second pressure roller (211b) to press the portion of the material strip (A) downstream of the cutter (12) against the outer peripheral surface (110).

Description

A winding device This disclosure claims priority to Chinese Patent Application No. 202411518895.8, filed on October 29, 2024, entitled "A Winding Device", and to Chinese Patent Application No. 202422617592.3, also filed on October 29, 2024, entitled "A Winding Device", the entire contents of which are incorporated herein by reference. Technical Field This disclosure relates to the field of battery manufacturing equipment technology, specifically a winding device. Background Technology The battery cell is an important component of a battery and can be manufactured by winding various layers of material strips (such as separator, anode plate, separator and cathode plate). In related technologies, the layers of material strips are brought together by a film-coating mechanism before entering a winding needle at the first station for winding. After winding one cell, the winding needle at the first station switches to the second station, while another winding needle switches to the first station. At this time, the layers of material strips, brought together by the film-coating mechanism, pass through the first station, where the winding needle at the first station extends from the turret to complete the threading (i.e., the material strip enters the slit of the winding needle). Then, the inner clamping needle in the winding needle clamps the material strip, and then the cutter located between the first and second stations cuts the material strip. Then, the winding needle at the first station begins winding the next cell. In summary, the winding process in related technologies is complex, resulting in a complex structure for the winding equipment and low production efficiency. Summary of the Invention Therefore, it is necessary to provide a winding device that can simplify the structure and improve production efficiency to address the above problems. A winding apparatus, comprising: A needle winding mechanism includes a needle winding and a cutter. The needle winding has an outer peripheral surface and a receiving recess formed on the outer peripheral surface. The needle winding is controllably rotatable to wind a strip onto the outer peripheral surface. The cutter is disposed within the receiving recess. The outer peripheral surface has an adsorption region located upstream of the receiving recess. The adsorption region is configured to controllably adsorb passing strip. The pressing mechanism includes a roller pressing assembly and a pushing assembly. The roller pressing assembly is used to press the material strip against the outer peripheral surface. The pushing assembly includes a rotating part and a pushing part disposed on the rotating part. The rotating part can be rotated in a controlled manner to drive the pushing part to rotate to be opposite to the receiving recess on the outer peripheral surface. The pushing part is used to feed the material strip into the receiving recess. The cutter is used to cut the material strip that enters the receiving recess. In some embodiments, the inside of the needle has a vacuum chamber for communication with an external negative pressure source, and the adsorption area has multiple adsorption holes that communicate with the vacuum chamber. In some embodiments, the inside of the winding needle is provided with multiple cavities, and each cavity and the vacuum cavity are arranged at intervals along the circumference of the winding needle. A heating element is provided on the inner wall of each cavity and the vacuum cavity near the outer peripheral surface. In some embodiments, the heating element located in the vacuum chamber has multiple through holes, each of which is connected to a corresponding adsorption hole. In some embodiments, the needle winding mechanism further includes an electrically integrated slip ring, the rotor of which is fixedly connected to the needle winding, and the stator of which has a first vacuum connector and a first conductive connector. The first vacuum connector is used to connect to an external negative pressure source through a gas supply line, and the first conductive connector is used to connect to an external power source through a conductive line. The rotor of the electro-integrated slip ring has a second vacuum connector that communicates with the first vacuum connector and a second conductive connector that is electrically connected to the first conductive connector. The second vacuum connector communicates with the vacuum chamber through a vacuum tube, and the second conductive connector is electrically connected to each of the heating elements through a wire. In some embodiments, the cutter is a hot cutter. In some embodiments, the cutter has a mounting hole, and a heating element is inserted into the mounting hole. In some embodiments, the rotating part is provided with two pushing parts, and the two pushing parts are arranged at intervals along the rotation direction of the rotating part so that a gap is formed between the two push