Winding head, auxiliary winding method and device of a power battery winding machine

Abstract

The present invention relates to a winding head, an auxiliary winding method and a device thereof for a power battery winding machine. The winding head includes a winding head outer frame, a station-changing mechanism, a winding needle, a winding needle rotation mechanism and a winding needle telescopic mechanism. A winding station, a glue pasting station and a needle extraction and blanking station are arranged in front of the winding head outer frame. The station-changing mechanism is installed behind the winding head outer frame. Three groups of winding needles are installed in the winding head outer frame. A central axis guiding mechanism is installed at the center of the winding head outer frame. The central axis guiding mechanism includes a central axis and a guiding unit. The central axis is installed at the center of the winding head outer frame, and three guiding units are installed on the outer peripheral side of the central axis. A single guiding unit of the central axis guiding mechanism is located between two groups of winding needles. When the winding head outer frame rotates and changes positions, when the battery cell reaches the glue pasting station, the diaphragm is held and guided by the guiding unit to be inclined, so as to facilitate subsequent needle threading. Compared with the structure pressed by a pressing wheel in the prior art, there is no need to wait, and the structural design is reasonable, meeting the production requirements.

Description

Technical Field

[0001] The present invention relates to the field of power battery manufacturing, and particularly to a winding head of a power battery winding machine, an auxiliary winding method and a device thereof. Background Art

[0002] A power battery winding machine is a lithium battery manufacturing device used to wind a separator and electrode sheets together to form a bare battery cell. The power battery winding machine consists of many component devices, and the most important component among them is the winding head part. The winding head part not only integrates mechanisms such as winding needles, station changing, winding needle rotation, and winding needle telescoping, but also coordinates with actions of the adhesive tape pasting mechanism, blanking mechanism, etc. to complete various processes. Therefore, the winding head is the most important component directly affecting the formation of the battery cell.

[0003] As Figure 1 shown, in the existing market, a winding station A, an adhesive tape pasting station B, and a blanking and discharging station C are provided in front of the winding head. First, the winding needle rotates a set number of turns at the winding station, and then the electrode sheet cutting mechanism above the winding station A cuts the electrode sheet. Then the winding needle continues to wind about 4 or 5 turns to ensure that the separator is longer than the electrode sheet, and the separator completely wraps the electrode sheet. After that, the winding head rotates 120°, and the winding needle reaches the adhesive tape pasting station. Then, there are two pressing wheels 01 installed below the winding station. The pressing wheels 01 are located below the winding station. When it is necessary to shape the separator (the separator includes an upper separator and a lower separator) vertically, the two pressing wheels 01 cooperate with the upper pressing wheel 02 above the winding station A to press and shape the separator vertically. Then the cutting separator winding needle extends out to thread the needle. The defect of this structure of the winding head and the needle threading method is that due to the need for the two pressing wheels 01 to have opening and closing actions, a cylinder is installed inside the winding head, which takes up a lot of space and compresses the installation space of other mechanisms such as the winding needle rotation mechanism and the winding needle telescoping mechanism. Moreover, the guiding of the pressing wheel action requires time to wait, which affects the needle threading speed. Therefore, it is necessary to develop a new winding head and a separator auxiliary positioning device to achieve faster needle threading and winding of the battery cell. Summary of the Invention

[0004] Aiming at the above defects existing in the prior art, the technical problem to be solved by the present invention is to provide a winding head with a more reasonable structure and an auxiliary winding device that facilitates the positioning of the separator and fast needle threading. The specific technical solutions are as follows:

[0005] A winding head of a power battery winding machine, comprising a winding head outer frame, a station-changing mechanism, a winding needle, a winding needle rotating mechanism and a winding needle telescopic mechanism. In front of the winding head outer frame, there are a winding station, a glue-applying station and a needle-removing and blanking station. The station-changing mechanism is installed behind the winding head outer frame, and the station-changing mechanism drives the winding head outer frame to rotate to change stations. Three groups of winding needles are installed in the winding head outer frame, and the three groups of winding needles are circumferentially distributed around the central axis of the winding head outer frame. The three groups of winding needles respectively correspond to the winding station, the glue-applying station and the needle-removing and blanking station. The winding needle rotating mechanism and the winding needle telescopic mechanism are installed behind the winding head outer frame, and the number of the winding needle rotating mechanism and the winding needle telescopic mechanism corresponds to the three groups of winding needles. A central axis guiding mechanism is installed at the center of the winding head outer frame. The central axis guiding mechanism includes a central axis and a guiding unit. The central axis is installed at the center of the winding head outer frame, and three guiding units are installed on the outer peripheral side of the central axis. A single guiding unit is located between two groups of winding needles.

[0006] As a preferred embodiment of the winding head of the present invention, each guiding unit includes an inclined support plate, a guiding plate, an inclined wheel frame and a guiding wheel. The inclined support plate and the inclined wheel frame are installed on the outer peripheral side of the central axis. The guiding plate is installed on the surface of the inclined support plate, and the guiding wheel is installed in the inclined wheel frame. The guiding wheel is close to the guiding plate.

[0007] As a preferred embodiment of the winding head of the present invention, the winding needle telescopic mechanism includes a motor, a lead screw, a nut, a connecting plate, a bearing seat and a spline shaft. The motor drives the lead screw to rotate. The lead screw is threadedly connected to the nut. The nut is installed on the connecting plate. The connecting plate is connected to the bearing seat. The winding needle is installed on the bearing seat. The spline shaft penetrates into the bearing seat to connect the winding needle.

[0008] An auxiliary winding method for a power battery winding machine, characterized by comprising the following steps

[0009] ① The first winding needle at the winding station rotates counterclockwise for a set number of turns to initially complete the process of winding the battery core.

[0010] ② The pole piece cutting mechanism above the winding head cuts the pole piece, and the third winding needle at the needle-removing and blanking station retracts into the winding head outer frame.

[0011] ③ The winding head rotates clockwise by 120° to change positions. The first winding needle that has wound the battery core is transferred from the winding station to the glue-applying station. The battery core pulls the diaphragm to reach the glue-applying station. The second winding needle originally at the glue-applying station is transferred to the needle-removing and blanking station. The third winding needle originally at the needle-removing and blanking station is transferred to the winding station. The lower end of the diaphragm is supported by the guiding plate and the guiding wheel of the central axis guiding mechanism, and the upper end of the diaphragm is supported by the auxiliary wheel. The diaphragm between the central axis guiding mechanism and the winding station is positioned to be inclined. The third winding needle moves forward and extends out of the winding head outer frame to complete needle threading. The third winding needle clamps the diaphragm, and the diaphragm cutting mechanism moves leftward to cut the diaphragm.

[0012] An auxiliary winding device for a power battery winding machine, including an outer frame of the winding head. In front of the outer frame of the winding head, there are a winding station, a tape sticking station, and a needle extracting and blanking station. It also includes a central axis guiding mechanism, an auxiliary wheel guiding mechanism, and a diaphragm cutting mechanism. The central axis guiding mechanism is installed at the center in front of the outer frame of the winding head. The winding station, the tape sticking station, and the needle extracting and blanking station are distributed circumferentially around the central axis guiding mechanism. The auxiliary wheel guiding mechanism is located in the upper left of the winding station, and the auxiliary wheel guiding mechanism presses against the diaphragm that has not entered the winding station. The diaphragm cutting mechanism is located between the winding station and the tape sticking station. The diaphragm entering the tape sticking station is pressed by the central axis guiding mechanism, and the diaphragm is positioned to be inclined.

[0013] As a preferred solution of the auxiliary winding device of the present invention, the central axis guiding mechanism includes a central axis and a guiding unit. The central axis is installed at the center of the outer frame of the winding head. Three guiding units are installed on the outer peripheral side of the central axis. A single guiding unit is located between two groups of winding needles. Each guiding unit includes an inclined support plate, a guiding plate, an inclined wheel frame, and a guiding wheel. The inclined support plate and the inclined wheel frame are installed on the outer peripheral side of the central axis. The guiding plate is installed on the surface of the inclined support plate. The guiding wheel is installed in the inclined wheel frame, and the guiding wheel is close to the guiding plate.

[0014] As a preferred solution of the auxiliary winding device of the present invention, the auxiliary wheel guiding mechanism includes a moving cylinder, a wheel plate, a diaphragm guiding wheel, and an auxiliary wheel. The moving cylinder drives the wheel plate to move horizontally left and right. The diaphragm guiding wheel and the auxiliary wheel are installed on the right side of the wheel plate. The lower diaphragm passes through the diaphragm guiding wheel and reaches the auxiliary wheel. The auxiliary wheel is inclined upward to avoid the winding needles.

[0015] As a preferred solution of the auxiliary winding device of the present invention, the diaphragm cutting mechanism includes a servo module, a cutter moving plate, a diaphragm pressing wheel, and a cutter. The servo module drives the cutter moving plate to move horizontally left and right. The diaphragm pressing wheel and the cutter are installed on the left side of the cutter moving plate. The cutter cuts the diaphragm between the winding station and the tape sticking station.

[0016] The advantages of the present invention are as follows: The central axis guiding mechanism is installed at the center of the outer frame of the winding head. A single guiding unit of the central axis guiding mechanism is located between two groups of winding needles. When the outer frame of the winding head rotates and changes positions, when the battery cell reaches the tape sticking station, the diaphragm is pressed and guided by the guiding unit to be inclined, which is convenient for subsequent needle threading. Compared with the structure of the pressing wheel in the prior art, there is no need to wait, which is beneficial to improving efficiency. The structure design is reasonable and meets the production requirements. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of passing through the diaphragm in the prior art;

[0018] Figure 2 is a perspective view of the winding head of the present invention;

[0019] Figure 3 is a perspective view of another angle of the winding head of the present invention;

[0020] Figure 4 is a perspective view of the central axis guiding mechanism of the present invention;

[0021] Figure 5 is a front view of the positional relationship between the central axis guiding mechanism of the present invention and three workstations;

[0022] Figure 6 is a perspective view of the needle winding telescopic mechanism of the present invention;

[0023] Figure 7 is an evolution diagram of the needle threading structure of the present invention;

[0024] Figure 8 is a front view of the auxiliary winding device of the present invention;

[0025] Figure 9 is a perspective view of the auxiliary wheel guiding mechanism of the present invention;

[0026] Figure 10 is a perspective view of the diaphragm cutting mechanism of the present invention. Detailed Embodiments

[0027] The following further describes the detailed embodiments of the present invention in conjunction with the accompanying drawings:

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the position or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] Such as Figure 2 and 3As shown in the figure, a winding head of a power battery winding machine includes a winding head outer frame 1, a station changing mechanism 2, a winding needle 3, a winding needle rotating mechanism 4, and a winding needle telescoping mechanism 5. In front of the winding head outer frame 1, there are a winding station A, a glue sticking station B, and a needle withdrawing and blanking station C. The above stations are the conventional designs of the winding head, and the station settings of the present invention are the same as those of the prior art. The station changing mechanism 2 is installed behind the winding head outer frame 1, and the station changing mechanism 2 drives the winding head outer frame 1 to rotate and change stations. Three groups of winding needles 3 are installed in the winding head outer frame 1, and the three groups of winding needles 3 are circumferentially distributed around the central axis of the winding head outer frame 1. The angle between adjacent two groups of winding needles to the center of the winding head outer frame 1 is 120°. The three groups of winding needles 3 respectively correspond to the winding station A, the glue sticking station B, and the needle withdrawing and blanking station C. The winding needle rotating mechanism 4 and the winding needle telescoping mechanism 5 are installed behind the winding head outer frame 1. The number of the winding needle rotating mechanism 4 and the winding needle telescoping mechanism 5 corresponds to the three groups of winding needles. The function of the winding needle rotating mechanism 4 is to rotate the winding needle 3, and the function of the winding needle telescoping mechanism 5 is to make the winding needle extend or retract into the winding head outer frame 1. The station changing mechanism 2 and the winding needle rotating mechanism 4 are the conventional structures of the winding head, and the specific principles will not be elaborated.

[0031] As Figure 4 and 5 shown in the figure, a central axis guiding mechanism 6 is installed at the center of the winding head outer frame 1. The central axis guiding mechanism 6 includes a central axis 61 and a guiding unit 62. The central axis 61 is installed at the center of the winding head outer frame 1. Three guiding units 62 are installed on the outer peripheral side of the central axis 61. A single guiding unit 62 is located between two groups of winding needles. One group of winding needles consists of an inner winding needle and an outer winding needle, which is the prior art. Each guiding unit includes an inclined support plate 621, a guiding plate 622, an inclined wheel frame 623, and a guiding wheel 624. The inclined support plate 621 and the inclined wheel frame 623 are installed on the outer peripheral side of the central axis 61. The guiding plate 624 is installed on the surface of the inclined support plate 621. The guiding wheel 624 is installed in the inclined wheel frame 623. The guiding wheel 624 is close to the guiding plate 622. The diaphragm of the battery cell entering the glue sticking station contacts the guiding plate 622 and the guiding wheel 624.

[0032] As Figure 6 shown in the figure, the winding needle telescoping mechanism 5 includes a motor 51, a lead screw 52, a nut 53, a connecting plate 54, a bearing seat 55, and a spline shaft 56. The motor 51 drives the lead screw 52 to rotate. The lead screw 52 is threadedly connected to the nut 53. The nut 53 is installed on the connecting plate 54. The connecting plate 54 is connected to the bearing seat 55. The winding needle 3 is installed on the bearing seat 55. The spline shaft 56 passes through the bearing seat and is connected to the winding needle 3. The spline shaft 56 can ensure that the winding needle 3 can rotate and also slide longitudinally on the shaft.

[0033] As Figure 7 shown in the figure, an auxiliary winding method for a power battery winding machine includes the following steps.

[0034] ① At the winding station, the first winding needle 31 rotates counterclockwise by a set number of turns to initially complete the process of winding the battery cell.

[0035] ② The pole piece cutting mechanism (not shown) above the winding head cuts the pole piece. The first winding needle 31 continues to rotate for a few more turns, such as 2, 3, or 4 turns, so that the diaphragm (upper and lower diaphragms) completely wraps the pole piece. The third winding needle 33 at the needle extraction and blanking station retracts into the outer frame of the winding head.

[0036] ③ The winding head rotates clockwise by 120°, that is, the outer frame 1 of the winding head rotates by 120° for position change. The first winding needle 31 with the wound battery cell is transferred from the winding station A to the glue - sticking station B. The battery cell pulls the diaphragm to reach the glue - sticking station B. The second winding needle 32 originally at the glue - sticking station is transferred to the needle extraction and blanking station C, and the third winding needle 33 originally at the needle extraction and blanking station C is transferred to the winding station A. The lower end of the diaphragm is supported by the guide plate 622 and the guide wheel 624 of the central axis guiding mechanism 6, and the upper end of the diaphragm is supported by the auxiliary wheel of the auxiliary wheel guiding mechanism. The diaphragm between the central axis guiding mechanism 6 and the winding station A is positioned to be inclined. The diaphragm passes through the center of the winding needle. The needle telescoping mechanism 5 of the winding head drives the third winding needle to extend out of the outer frame of the winding head. The inclination angles of the inner and outer needle ports of the third winding needle 33 correspond to the diaphragm. When the third winding needle extends, the diaphragm enters the needle port of the winding needle to complete needle threading. The third winding needle 33 clamps the diaphragm, and the diaphragm cutting mechanism 8 moves leftward to cut the diaphragm, quickly realizing diaphragm needle threading to assist rapid winding.

[0037] As Figure 8 shown, an auxiliary winding device of a power battery winding machine includes an outer frame 1 of the winding head. In front of the outer frame of the winding head, there are a winding station A, a glue - sticking station B, and a needle extraction and blanking station C. It also includes a central axis guiding mechanism 6, an auxiliary wheel guiding mechanism 7, and a diaphragm cutting mechanism 8. The central axis guiding mechanism 6 is installed at the center in front of the outer frame 1 of the winding head. The winding station A, the glue - sticking station B, and the needle extraction and blanking station C are distributed circumferentially around the central axis guiding mechanism 6. The auxiliary wheel guiding mechanism 7 is located at the upper left of the winding station A. The auxiliary wheel guiding mechanism 7 supports the diaphragm that has not entered the winding station. The diaphragm cutting mechanism 8 is located between the winding station and the glue - sticking station. The diaphragm entering the glue - sticking station is supported by the central axis guiding mechanism 6, and the diaphragm is positioned to be inclined.

[0038] The central axis guiding mechanism of the auxiliary winding device is as Figure 4As shown in the figure, it includes a central shaft 61 and a guiding unit 62. The central shaft 61 is installed at the center of the outer frame 1 of the winding head. Three guiding units 62 are installed on the outer peripheral side of the central shaft 61. A single guiding unit 62 is located between two sets of winding needles. One set of winding needles consists of an inner winding needle and an outer winding needle, which is the prior art. Each guiding unit includes an inclined support plate 621, a guiding plate 622, an inclined wheel frame 623 and a guiding wheel 624. The inclined support plate 621 and the inclined wheel frame 623 are installed on the outer peripheral side of the central shaft 61. The guiding plate 624 is installed on the surface of the inclined support plate 621. The guiding wheel 624 is installed in the inclined wheel frame 623. The guiding wheel 624 is close to the guiding plate 622. The central shaft guiding mechanism mentioned in the auxiliary winding method also has this structure.

[0039] As Figure 9 shown, the auxiliary wheel guiding mechanism 7 includes a moving cylinder 71, a wheel plate 72, a diaphragm guiding wheel 73 and an auxiliary wheel 74. The moving cylinder 71 drives the wheel plate 72 to move horizontally left and right. The diaphragm guiding wheel 73 and the auxiliary wheel 74 are installed on the right side of the wheel plate 72. The lower diaphragm reaches the auxiliary wheel after being guided by the diaphragm guiding wheel 73. The auxiliary wheel 74 inclines upward to avoid the winding needles. When the moving cylinder 71 drives the wheel plate 72 to move to the right, the wheel plate 72 drives the diaphragm guiding wheel 73 and the auxiliary wheel 74 to move to the right. The auxiliary wheel 74 pushes the lower diaphragm to move to the right. The auxiliary wheel 74, the guiding plate 622 and the guiding wheel 624 are inclined and aligned. The auxiliary wheel guiding mechanism mentioned in the auxiliary winding method is the same as the auxiliary wheel guiding mechanism of the auxiliary winding device.

[0040] As Figure 10 shown, the diaphragm cutting mechanism 8 includes a servo module 81, a cutter moving plate 82, a diaphragm pressing wheel and a cutter 83. The servo module 81 drives the cutter moving plate 82 to move horizontally left and right. The diaphragm pressing wheel and the cutter 82 are installed on the left side of the cutter moving plate 82. The diaphragm pressing wheel is divided into an upper pressing wheel 84 and a lower pressing wheel 85. The upper pressing wheel 84 corresponds to the guiding plate 622, and the lower pressing wheel 85 corresponds to the guiding wheel 624. After the needle threading is completed, the cutter cuts the diaphragm between the winding station A and the pasting station B. The diaphragm cutting mechanism mentioned in the auxiliary winding method is the same as the diaphragm cutting mechanism of the auxiliary winding device.

[0041] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. A winding head of a power battery winding machine, comprising a winding head outer frame, a station-changing mechanism, a winding needle, a winding needle rotation mechanism and a winding needle telescopic mechanism. There are a winding station, a tape sticking station and a needle withdrawing and blanking station in front of the winding head outer frame. The station-changing mechanism is installed behind the winding head outer frame, and the station-changing mechanism drives the winding head outer frame to rotate to change the station. Three groups of winding needles are installed in the winding head outer frame, and the three groups of winding needles are circumferentially distributed around the central axis of the winding head outer frame. The three groups of winding needles respectively correspond to the winding station, the tape sticking station and the needle withdrawing and blanking station. The winding needle rotation mechanism and the winding needle telescopic mechanism are installed behind the winding head outer frame, and the number of the winding needle rotation mechanism and the winding needle telescopic mechanism corresponds to the three groups of winding needles. Characterized in that: A central axis guiding mechanism is installed at the center of the winding head outer frame. The central axis guiding mechanism comprises a central axis and a guiding unit. The central axis is installed at the center of the winding head outer frame, and three guiding units are installed on the outer peripheral side of the central axis. A single guiding unit is located between two groups of winding needles. Each guiding unit comprises an inclined support plate, a guiding plate, an inclined wheel frame and a guiding wheel. The inclined support plate and the inclined wheel frame are installed on the outer peripheral side of the central axis. The guiding plate is installed on the surface of the inclined support plate, and the guiding wheel is installed in the inclined wheel frame. The guiding wheel is close to the guiding plate.

2. The winding head of a power battery winding machine according to claim 1, Characterized in that : The winding needle telescopic mechanism comprises a motor, a lead screw, a nut, a connecting plate, a bearing seat and a spline shaft. The motor drives the lead screw to rotate. The lead screw is threadedly connected with the nut. The nut is installed on the connecting plate. The connecting plate is connected with the bearing seat. The winding needle is installed on the bearing seat. The spline shaft penetrates into the bearing seat and is connected with the winding needle.

3. An auxiliary winding method of a power battery winding machine, the power battery winding machine comprising the winding head according to claim 1 or 2, Characterized in that: Comprising the following steps, ① The first winding needle at the winding station rotates counterclockwise by a set number of turns to initially complete the process of winding the battery cell. ② The pole piece cutting mechanism above the winding head cuts the pole piece, and the third winding needle at the needle withdrawing and blanking station retracts into the winding head outer frame. ③ The winding head rotates clockwise by 120° to change positions. The first winding needle that has wound the battery cell is transferred from the winding station to the tape sticking station. The battery cell pulls the diaphragm to reach the tape sticking station. The second winding needle originally at the tape sticking station is transferred to the needle withdrawing and blanking station, and the third winding needle originally at the needle withdrawing and blanking station is transferred to the winding station. The lower end of the diaphragm is supported by the guiding plate and the guiding wheel of the central axis guiding mechanism, and the upper end of the diaphragm is supported by the auxiliary wheel. The diaphragm between the central axis guiding mechanism and the winding station is positioned to be inclined. The third winding needle moves forward and extends out of the winding head outer frame to complete needle threading. The third winding needle clamps the diaphragm, and the diaphragm cutting mechanism moves leftward to cut the diaphragm.

4. An auxiliary winding device of a power battery winding machine, comprising a winding head outer frame. There are a winding station, a tape sticking station and a needle withdrawing and blanking station in front of the winding head outer frame. Characterized in that: It further includes a central axis guiding mechanism, an auxiliary wheel guiding mechanism, and a diaphragm cutting mechanism. The central axis guiding mechanism is installed at the center in front of the outer frame of the winding head. The winding station, the glue pasting station, and the needle extracting and blanking station are distributed circumferentially around the central axis guiding mechanism. The auxiliary wheel guiding mechanism is located at the upper left of the winding station. The auxiliary wheel guiding mechanism presses against the diaphragm that has not entered the winding station. The diaphragm cutting mechanism is located between the winding station and the glue pasting station. The diaphragm entering the glue pasting station is pressed against by the central axis guiding mechanism, and the diaphragm is positioned to be placed obliquely. The central axis guiding mechanism includes a central axis and a guiding unit. The central axis is installed at the center of the outer frame of the winding head. Three guiding units are installed on the outer peripheral side of the central axis. A single guiding unit is located between two groups of winding needles. Each guiding unit includes an inclined support plate, a guiding plate, an inclined wheel frame, and a guiding wheel. The inclined support plate and the inclined wheel frame are installed on the outer peripheral side of the central axis. The guiding plate is installed on the surface of the inclined support plate. The guiding wheel is installed in the inclined wheel frame, and the guiding wheel is close to the guiding plate.

5. The auxiliary winding device of a power battery winding machine according to claim 4, characterized in that: the auxiliary wheel guiding mechanism includes a moving cylinder, a wheel plate, a diaphragm guiding wheel, and an auxiliary wheel. The moving cylinder drives the wheel plate to move horizontally left and right. The diaphragm guiding wheel and the auxiliary wheel are installed on the right side of the wheel plate. The lower diaphragm reaches the auxiliary wheel after passing through the diaphragm guiding wheel. The auxiliary wheel is inclined upward to avoid the winding needles.

6. The auxiliary winding device of a power battery winding machine according to claim 4, characterized in that: the diaphragm cutting mechanism includes a servo module, a cutter moving plate, a diaphragm pressing wheel, and a cutter. The servo module drives the cutter moving plate to move horizontally left and right. The diaphragm pressing wheel and the cutter are installed on the left side of the cutter moving plate. The cutter cuts the diaphragm between the winding station and the glue pasting station.

Images