Exit needle device and winder

Abstract

The present application provides a needle withdrawal device and a winding machine, comprising: a frame; a needle withdrawal unit, comprising a first needle withdrawal mechanism, a second needle withdrawal mechanism and a positioning member, the first needle withdrawal mechanism comprising a first toggle member and a first needle withdrawal drive assembly for toggling the first circular wheel to withdraw the needle; the second needle withdrawal mechanism comprising a second toggle member for toggling the second circular wheel to withdraw the needle and to move the needle out, and a second needle withdrawal drive assembly for driving the second toggle member to move, the positioning member being used to position the first circular wheel when the second petal needle moves out; the needle out unit comprising a pusher and a needle out drive assembly. The needle withdrawal device provided in the present application arranges a positioning member on the moving path of the winding mechanism and positions the first circular wheel when the second petal needle moves out, so that when the second petal needle comes out, the positioning member can position the first circular wheel, thereby preventing the first petal needle from moving with the second petal needle, thereby realizing the sequential withdrawal of the first petal needle and the second petal needle, and reducing the probability of failure in material strip clamping.

Description

Technical Field

[0001] The present application belongs to the technical field of battery cell winding technology, and more specifically, relates to an exit needle device and a winding machine. Background Art

[0002] When winding a battery cell, the material strip is typically held by two pins in the winding mechanism. These pins are then rotated synchronously to form the cell. Before winding, the first pin of the winding mechanism is extended to position the strip, followed by the second pin, which grips the strip. Winding then begins. Once winding is complete, the two pins are removed from the cell.

[0003] Currently, the winding device of the winding machine is generally provided with a needle-out position, a needle-retracting position, and a winding position; the winding mechanism is supported by the winding drum, and the winding mechanism is driven to rotate by the winding drum, and reaches the needle-out position, the winding position, and the needle-retracting position in sequence. When the winding mechanism rotates to the needle-retracting position, the first needle-retracting mechanism drives the first circular wheel at the tail of the first petal needle, and the second needle-retracting mechanism drives the second circular wheel at the tail of the second petal needle to retract the needle and remove the battery cell; then, the second needle-retracting mechanism pushes the second circular wheel at the tail of the second petal needle to extend the second petal needle; after that, the winding mechanism rotates to the needle-out position, and the needle-out mechanism pushes the first circular wheel at the tail of the first petal needle to extend the first petal needle, completing the needle-out and clamping the material strip; after that, the winding mechanism rotates to the winding position to wind the material strip to form the battery cell, and then the winding mechanism rotates to the needle-retracting position, and the cycle repeats. However, this structure is prone to drive the first petal needle out when the second petal needle is out, resulting in failure in clamping the material strip. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide an exit needle device and a winding machine to solve the problem in the prior art that when the second petal needle is ejected, the first petal needle is easily driven out, resulting in failure of material strip clamping.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present application is to provide an ejection needle device, comprising:

[0006] frame;

[0007] The needle withdrawal unit includes a first needle withdrawal mechanism, a second needle withdrawal mechanism and a positioning member, the first needle withdrawal mechanism includes a first toggle member for toggling the first circular wheel of the first petal needle tail of the winding mechanism to withdraw the needle and a first needle withdrawal drive assembly for driving the first toggle member to move, the first needle withdrawal drive assembly being mounted on the frame; the second needle withdrawal mechanism includes a second toggle member for toggling the second circular wheel of the second petal needle tail of the winding mechanism to withdraw and eject the needle and a second needle withdrawal drive assembly for driving the second toggle member to move, the second needle withdrawal drive assembly being mounted on the frame; the positioning member is provided on the moving path of the first circular wheel, and the positioning member is used to position the first circular wheel when the second petal needle moves to eject the needle;

[0008] The needle-extracting unit comprises a pushing member for pushing the first circular wheel to move the needle out and a needle-extracting driving assembly for driving the pushing member to move, wherein the needle-extracting driving assembly is mounted on the frame.

[0009] In an optional embodiment, the positioning member has a limiting structure, which is used to limit the movement of the first circular wheel along the length direction of the first petal needle when the winding mechanism rotates from the needle retracting position to the needle outputting position; the second toggle member has an arc-shaped plate, which is used to push the second circular wheel to move out of the needle when the winding mechanism rotates from the needle retracting position to the needle outputting position.

[0010] In an optional embodiment, the needle withdrawal unit further includes a guide rail, the first toggle member and the second toggle member are respectively slidably mounted on the guide rail, and the guide rail is supported on the frame.

[0011] In an optional embodiment, the needle withdrawal device also includes a driving shaft, a main motor that drives the driving shaft to rotate, and a support shaft spaced apart from the driving shaft, the driving shaft is rotatably mounted on the frame, and the support shaft is mounted on the frame; the first needle withdrawal drive assembly includes a first connecting rod connected to the first toggle member, a first rocker arm hinged at one end to the first connecting rod, and a first cam that pushes the other end of the first rocker arm to swing, the first cam is mounted on the driving shaft, and the middle part of the first rocker arm is rotatably mounted on the support shaft.

[0012] In an optional embodiment, the second needle withdrawal drive assembly includes a second connecting rod connected to the second toggle member, a second rocker arm hinged to the second connecting rod at one end, and a second cam that pushes the other end of the second rocker arm to swing, the second cam is installed on the active shaft, and the middle part of the second rocker arm is rotatably installed on the support shaft.

[0013] In an optional embodiment, the second needle withdrawal drive assembly further includes a pusher for driving the second toggle member to drive the second circular wheel to move the needle out, and the pusher is mounted on the frame.

[0014] In an optional embodiment, the needle ejection drive assembly includes a slide rail, a third connecting rod connected to the pushing member, a third rocker arm hinged to the third connecting rod at one end, and a third cam that pushes the other end of the third rocker arm to swing, the pushing member is slidably mounted on the slide rail, the third cam is mounted on the driving shaft, the middle part of the third rocker arm is rotatably mounted on the support shaft, and the slide rail is supported on the frame.

[0015] In an optional embodiment, the needle-extraction drive assembly further includes a pusher for driving the pusher to move along the slide rail, and the pusher is mounted on the frame.

[0016] In an optional embodiment, it further includes a detection unit for sensing the first circular wheel to detect that the winding mechanism reaches the winding position, and the detection unit is installed on the frame.

[0017] Another purpose of an embodiment of the present application is to provide a winding machine, comprising a winding device, the winding device comprising a winding frame, a winding drum rotatably mounted on the winding frame, a winding mechanism installed in the winding drum, a rotating drive assembly for driving the winding drum to rotate, and an exit needle device as described in any of the above embodiments, the winding mechanism comprising a rotating drum, a first petal needle and a second petal needle, the rotating drum rotatably mounted in the winding drum, a first circular wheel being provided at the tail of the first petal needle, a second circular wheel being provided at the tail of the second petal needle, the first petal needle sliding through the rotating drum, and the second petal needle sliding through the first circular wheel and the rotating drum.

[0018] The beneficial effect of the exit needle device provided by the embodiment of the present application is that compared with the prior art, the exit needle device of the embodiment of the present application, by arranging a positioning member on the moving path of the winding mechanism and positioning the first circular wheel when the second petal needle moves out of the needle, so that when the second petal needle is ejected, the positioning member can position the first circular wheel, thereby preventing the first petal needle from moving with the second petal needle, and thus realizing the successive ejection of the first petal needle and the second petal needle, thereby reducing the probability of failure in material strip clamping.

[0019] The beneficial effect of the winding machine provided by the embodiment of the present application is that, compared with the prior art, the winding machine of the embodiment of the present application uses the exit needle device of the above embodiment and has the effective effect of the above exit needle device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic structural diagram of a winding machine provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the combination of the winding mechanism and the needle withdrawal unit;

[0023] Figure 3 for Figure 3 Enlarged view of part A;

[0024] Figure 4 for Figure 1 A schematic structural diagram of the winding device;

[0025] Figure 5 for Figure 4 Schematic diagram of the exploded structure of the middle shaft transmission assembly;

[0026] Figure 6 for Figure 4 Schematic diagram of the exploded structure of the winding mechanism;

[0027] Figure 7 A schematic diagram of a portion of the structure of the needle ejection device provided in an embodiment of the present application;

[0028] Figure 8 for Figure 7 Schematic diagram of the structure of the middle needle withdrawal unit Figure 1 ;

[0029] Figure 9 for Figure 7 Schematic diagram of the structure of the middle needle withdrawal unit Figure 2 ;

[0030] Figure 10 for Figure 7 Schematic diagram of the structure of the needle outlet unit;

[0031] Figure 11 for Figure 7 Schematic diagram of the structure of the detection unit.

[0032] Among them, the main marks of the drawings in the figure are:

[0033] 100-winding machine;

[0034] 10-winding device; 11-winding frame; 12-winding drum; 13-winding mechanism; 13a-first winding mechanism; 13b-second winding mechanism; 13c-third winding mechanism; 131-first petal needle; 132-first needle cylinder; 133-first round wheel; 134-second petal needle; 135-second needle cylinder; 136-second round wheel; 137-rotating cylinder; 1371-external gear; 138-support cylinder; 14-shaft transmission assembly; 141-transmission shaft; 141a-first transmission shaft; 141b-second transmission shaft; 141c-third transmission shaft; 142-driving wheel ;142a-first driving wheel;142b-second driving wheel;142c-third driving wheel;143-driven wheel;143a-first driven wheel;143b-second driven wheel;143c-third driven wheel;144-support sleeve;15-rotation drive assembly;15a-first rotation drive assembly;15b-second rotation drive assembly;15c-third rotation drive assembly;151-transmission motor;152-driving wheel;153-transmission belt;16-rotation drive assembly;161-main gear;162-slave gear;163-toothed belt;164-gearbox;

[0035] 20-Exit the needle device;

[0036] 21-frame; 22-main motor; 23-transmission mechanism; 24-driving shaft; 25-support shaft;

[0037] 30-needle withdrawal unit; 31-first needle withdrawal mechanism; 311-first toggle member; 312-first needle withdrawal drive assembly; 3121-first connecting rod; 3122-first rocker; 3123-first cam; 32-second needle withdrawal mechanism; 321-second toggle member; 3211-arc-shaped plate; 322-second needle withdrawal drive assembly; 3221-second connecting rod; 3222-second rocker; 3223-second cam; 3224-pusher; 33-positioning member; 331-limiting structure; 34-guide rail;

[0038] 40-needle ejection unit; 41-pushing member; 411-pushing wheel; 42-needle ejection drive assembly; 421-third connecting rod; 422-third rocker; 423-third cam; 424-pushing device; 425-slide rail; 426-mounting plate;

[0039] 50-detection unit; 51-detector; 52-support;

[0040] 90-battery cells. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0042] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0044] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0046] References to "one embodiment," "some embodiments," or "an embodiment" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present invention. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0047] See also Figure 1 、 Figure 2 and Figure 7 , the winding machine 100 provided in the present application is now described. The winding machine 100 comprises a winding device 10 and an exit needle device 20. The winding device 10 comprises a winding frame 11, a winding drum 12, a winding mechanism 13 and a rotary drive assembly 16. The winding drum 12 is rotatably mounted on the winding frame 11, and the winding drum 12 is supported by the winding frame 11. The winding mechanism 13 is installed in the winding drum 12, and the winding mechanism 13 is supported by the winding drum 12. The rotary drive assembly 16 is connected to the winding drum 12 to drive the winding drum 12 to rotate, thereby driving the winding mechanism 13 to rotate, thereby driving the winding mechanism 13 to the needle withdrawal position, the needle outlet position, and the winding position in sequence, and circulates in the needle withdrawal position, the needle outlet position, and the winding position in sequence.

[0048] See also Figure 1 and Figure 6The winding mechanism 13 includes a rotating drum 137, a first petal needle 131, and a second petal needle 134. The rotating drum 137 is rotatably installed in the winding drum 12. The tail of the first petal needle 131 is provided with a first round wheel 133, and the tail of the second petal needle 134 is provided with a second round wheel 136. The first petal needle 131 slides through the rotating drum 137, and the second petal needle 134 slides through the first round wheel 133 and the rotating drum 137, so that the first petal needle 131 and the second petal needle 134 are supported by the rotating drum 137. When the first round wheel 133 is turned, the first petal needle 131 can be driven to move axially along the rotating drum 137, such as pushing the first petal needle 131 out of the winding drum 12 to achieve the needle-out movement of the first petal needle 131; and the first petal needle 131 can be pushed back into the winding drum 12 to achieve the needle-out movement of the first petal needle 131. Similarly, turning the second wheel 136 can drive the second needle 134 to move axially along the rotating drum 137, such as pushing the second needle 134 out of the winding drum 12 to achieve the second needle 134's needle-out movement; and pushing the second needle 134 back into the winding drum 12 to achieve the second needle 134's needle-out movement. In addition, when the rotating drum 137 is rotated, the first needle 131 and the second needle 134 can be driven to rotate to wind the battery cell 90.

[0049] See also Figure 3 and Figure 7 The needle withdrawal device 20 includes a frame 21, a needle withdrawal unit 30 and a needle output unit 40. The needle withdrawal unit 30 and the needle output unit 40 are mounted on the frame 21, and the frame 21 supports the needle withdrawal unit 30 and the needle output unit 40.

[0050] See also Figure 3 、 Figure 8 and Figure 9The needle withdrawal unit 30 includes a first needle withdrawal mechanism 31, a second needle withdrawal mechanism 32 and a positioning member 33. The first needle withdrawal mechanism 31 includes a first toggle member 311 and a first needle withdrawal drive assembly 312. The first needle withdrawal drive assembly 312 is mounted on the frame 21. The first needle withdrawal drive assembly 312 is connected to the first toggle member 311 to drive the first toggle member 311 to move. The first toggle member 311 is used to toggle the first circular wheel 133 at the tail of the first petal needle 131 of the winding mechanism 13 to withdraw the needle, thereby driving the first petal needle 131 to withdraw the needle. The second needle withdrawal mechanism 32 includes a second toggle member 321 and a second needle withdrawal drive assembly 322. The second needle withdrawal drive assembly 322 is mounted on the frame 21. The second needle withdrawal drive assembly 322 is connected to the second toggle member 321 to drive the second toggle member 321 to move. The second toggle member 321 is used to toggle the second circular wheel 136 at the tail of the second petal needle 134 of the winding mechanism 13 to retract and withdraw the needle, thereby driving the retraction and withdrawal of the second petal needle 134. The positioning member 33 is arranged on the movement path of the first circular wheel 133, and when the second petal needle 134 is retracted, the positioning member 33 positions the first circular wheel 133. In this way, when the second petal needle 134 is withdrawn, the positioning member 33 can position the first circular wheel 133. In other words, the positioning member 33 is used to position the first circular wheel 133 when the second petal needle 134 is withdrawn.

[0051] The needle extraction unit 40 includes a pusher 41 and a needle extraction drive assembly 42, which is mounted on the frame 21. The needle extraction drive assembly 42 is connected to the pusher 41 to drive the pusher 41. The pusher 41 is used to push the first circular wheel 133 at the tail end of the first petal needle 131 of the winding mechanism 13 to move the needle, thereby driving the first petal needle 131 to extract the first petal needle 131.

[0052] During use, the winding drum 12 drives the winding mechanism 13 to rotate to the needle withdrawal position, and the first needle withdrawal driving assembly 312 drives the first toggle member 311 to move, and pulls the first circular wheel 133 through the first toggle member 311, thereby driving the first petal needle 131 to move in the needle withdrawal direction, so as to achieve the needle withdrawal movement of the first petal needle 131. When the first toggle member 311 drives the first circular wheel 133 to move in the needle withdrawal direction, and the first petal needle 131 is withdrawn, the first circular wheel 133 reaches the positioning member 33, and the positioning member 33 positions the first circular wheel 133; the second needle withdrawal driving assembly 322 drives the second toggle member 321 to move, and pulls the second circular wheel 136 through the second toggle member 321, thereby driving the second petal needle 134 to move in the needle withdrawal direction, so as to achieve the needle withdrawal movement of the first petal needle 131, thereby achieving the withdrawal of the first petal needle 131 and the second petal needle 134, and achieving the unloading of the wound battery cell 90. Then, the second needle-retraction drive assembly 322 pushes the second toggle member 321 to move in the needle-extraction direction, and pushes the second circular wheel 136 to drive the second petal needle 134 to move in the needle-extraction direction, thereby achieving the needle-extraction movement of the second petal needle 134. Since the positioning member 33 positions the first circular wheel 133, when the second petal needle 134 is extracted, the first petal needle 131 does not move with the second petal needle 134, so that the first petal needle 131 and the second petal needle 134 are extracted one after another. Afterwards, the winding drum 12 drives the winding mechanism 13 to rotate to the needle-extraction position. The needle-extraction drive assembly 42 pushes the pusher 41 to move in the needle-extraction direction, and pushes the first circular wheel 133 to drive the first petal needle 131 to move in the needle-extraction direction, thereby achieving the needle-extraction movement of the first petal needle 131, thereby completing the extraction of the first petal needle 131 and the second petal needle 134. Afterwards, the winding drum 12 drives the winding mechanism 13 to rotate to the winding position to wind and produce the battery cell 90.

[0053] The needle-exiting direction is opposite to the needle-retracting direction, and both the needle-exiting direction and the needle-retracting direction are along the length direction of the first petal needle 131 or the second petal needle 134 , and are also along the axial direction of the rotating drum 137 .

[0054] Compared with the prior art, the exit needle device 20 provided in the embodiment of the present application is a device that provides an exit needle device 20 in an embodiment of the present application. A positioning member 33 is provided on the moving path of the winding mechanism 13, and the first circular wheel 133 is positioned when the second petal needle 134 moves out of the needle. In this way, when the second petal needle 134 is ejected, the positioning member 33 can position the first circular wheel 133, thereby preventing the first petal needle 131 from moving with the second petal needle 134 when the needle is ejected, and thus the first petal needle 131 and the second petal needle 134 can be ejected in sequence, thereby reducing the probability of failure in material strip clamping.

[0055] Compared with the prior art, the winding machine 100 provided in the embodiment of the present application uses the exit needle device 20 of the above-mentioned embodiment and has the effective effects of the above-mentioned exit needle device 20, which will not be repeated here.

[0056] In one embodiment, the winding drum 12 is equipped with multiple winding mechanisms 13 arranged in a circular array. For example, three winding mechanisms 13 may be provided, and the three winding mechanisms 13 correspond to the needle withdrawal position, the needle exit position, and the winding position, respectively. In this way, when the winding drum 12 rotates, the winding mechanisms 13 are present at the needle withdrawal position, the needle exit position, and the winding position, thereby improving efficiency. It is understood that more winding mechanisms 13 may also be provided.

[0057] In one embodiment, see Figure 1 、 Figure 4 and Figure 5 The winding device 10 further includes a shaft transmission assembly 14 and a rotation drive assembly 15, which drives the shaft transmission assembly 14 to rotate by the rotation drive assembly 15, thereby driving the rotating drum 137 to rotate. It can be understood that a motor can be provided in the winding drum 12 to drive the rotating drum 137 to rotate.

[0058] In one embodiment, see Figure 1 、 Figure 4 and Figure 5 When a plurality of winding mechanisms 13 in a circular array are installed in the winding drum 12, the shaft transmission assembly 14 includes a plurality of transmission shafts 141 and support sleeves 144 which are sequentially mounted. The support sleeve 144 is mounted on the transmission shaft 141. A driving wheel 142 and a driven wheel 143 are respectively mounted at both ends of each transmission shaft 141. The rotation drive assembly 15 corresponds one-to-one to the transmission shaft 141. An external gear is provided on the rotating drum 137 of each winding mechanism 13, and the external gear is engaged with the corresponding driven wheel 143. The corresponding driving wheel 142 is driven to rotate by the rotation drive assembly 15, and the corresponding rotating drum 137 is driven to rotate through the corresponding transmission shaft 141 and the driven wheel 143, so as to drive the first petal needle 131 and the second petal needle 134 in the rotating drum 137 to rotate.

[0059] See also Figure 1 、 Figure 4 、 Figure 5 and Figure 6Taking the structure of three transmission shafts 141 as an example, correspondingly, there are three winding mechanisms 13 and three rotation drive components 15: the three transmission shafts 141 are respectively a first transmission shaft 141a, a second transmission shaft 141b and a third transmission shaft 141c, the second transmission shaft 141b is sleeved on the first transmission shaft 141a, the third transmission shaft 141c is sleeved on the second transmission shaft 141b, and the support sleeve 144 is sleeved on the third transmission shaft 141c. The first driving wheel 142a and the first driven wheel 143a are respectively installed at both ends of the first transmission shaft 141a, the second driving wheel 142b and the second driven wheel 143b are respectively installed at both ends of the second transmission shaft 141b, and the third driving wheel 142c and the third driven wheel 143c are respectively installed at both ends of the third transmission shaft 141c. The three rotation drive assemblies 15 are respectively a first rotation drive assembly 15a, a second rotation drive assembly 15b, and a third rotation drive assembly 15c. The first rotation drive assembly 15a is connected to the first driving wheel 142a, the second rotation drive assembly 15b is connected to the second driving wheel 142b, and the third rotation drive assembly 15c is connected to the third driving wheel 142c. The three winding mechanisms 13 are respectively a first winding mechanism 13a, a second winding mechanism 13b, and a third winding mechanism 13c. The first driven wheel 143a meshes with the external gear on the rotating drum 137 of the first winding mechanism 13a, the second driven wheel 143b meshes with the external gear on the rotating drum 137 of the second winding mechanism 13b, and the third driven wheel 143c meshes with the external gear 1371 on the rotating drum 137 of the third winding mechanism 13c. The first rotation drive assembly 15a rotates the first driving wheel 142a, driving the first transmission shaft 141a and the first driven wheel 143a to rotate, thereby driving the rotating drum 137 of the first winding mechanism 13a to rotate, and further driving the first petal needles 131 and the second petal needles 134 of the first winding mechanism 13a to rotate. Similarly, the second rotation drive assembly 15b rotates the second driving wheel 142b, driving the second transmission shaft 141b and the second driven wheel 143b to rotate, thereby driving the rotating drum 137 of the second winding mechanism 13b to rotate, and further driving the first petal needles 131 and the second petal needles 134 of the second winding mechanism 13b to rotate. The third rotation drive assembly 15c rotates the third driving wheel 142c, driving the third transmission shaft 141c and the third driven wheel 143c to rotate, thereby driving the rotating drum 137 of the third winding mechanism 13c to rotate, and further driving the first petal needles 131 and the second petal needles 134 of the third winding mechanism 13c to rotate.

[0060] In one embodiment, the rotation drive assembly 15 may include a transmission motor 151, a drive wheel 152, and a transmission belt 153. The drive wheel 152 is connected to the transmission motor 151, and the transmission belt 153 connects the drive wheel 152 and the corresponding driving wheel 142. Thus, the transmission motor 151 drives the corresponding driving wheel 142 to rotate, which in turn drives the driven wheel 143 on the corresponding transmission shaft 141 to rotate, thereby driving the rotating drum 137 to rotate. Of course, the rotation drive assembly 15 may also use other structures, such as using a motor to drive a gear set, which drives the corresponding driving wheel 142 to rotate via the gear set.

[0061] In one embodiment, see Figure 6 The winding mechanism 13 further includes a first needle cylinder 132 and a second needle cylinder 135. The first needle cylinder 132 is slidably inserted into the first needle cylinder 132. The first petal needle 131 and the first round wheel 133 are respectively connected to the two ends of the first needle cylinder 132. The second petal needle 134 and the second round wheel 136 are respectively connected to the two ends of the second needle cylinder 135. The second needle cylinder 135 is slidably inserted into the rotating cylinder 137 so that the rotating cylinder 137 drives the first petal needle 131 and the second petal needle 134 to rotate and facilitates the first petal needle 131 and the second petal needle 134 to move smoothly along the axial direction of the rotating cylinder 137. It is understandable that the cross-section of the portion of the first petal needle 131 and the second petal needle 134 located in the rotating cylinder 137 can be set to be semicircular, or the first petal needle 131 and the second petal needle 134 can be slidably inserted into the rotating cylinder 137 and driven to rotate by the rotating cylinder 137.

[0062] In one embodiment, the winding mechanism 13 further includes a support drum 138, which is sleeved on the rotating drum 137. The support drum 138 is connected to the winding drum 12 to rotatably install the rotating drum 137 in the winding drum 12. It is understandable that the rotating drum 137 can also be directly rotatably installed in the winding drum 12.

[0063] In one embodiment, see Figure 3 and Figure 8 When the first toggle member 311 drives the first circular wheel 133 to move along the needle withdrawal direction and completes the withdrawal of the first petal needle 131, the first circular wheel 133 reaches the positioning member 33, and the positioning member 33 can abut the first circular wheel 133 to position the first circular wheel 133. For example, the positioning member 33 can also be fixed on the frame 21. When the first circular wheel 133 moves to withdraw the needle, the side of the first circular wheel 133 can abut the positioning member 33 so that the positioning member 33 abuts the first circular wheel 133 to position it. Of course, a mover can also be provided to drive the positioning member 33 to move. When the first circular wheel 133 moves to the positioning member 33, the mover drives the positioning member 33 to move to position the first circular wheel 133, such as clamping the first circular wheel 133 or abutting the first circular wheel 133.

[0064] In one embodiment, see Figure 3 、 Figure 8 and Figure 9 The positioning member 33 has a limiting structure 331. When the winding mechanism 13 rotates from the needle retracting position to the needle exiting position, the first circular wheel 133 also rotates from the needle retracting position to the needle exiting position. When the first circular wheel 133 rotates from the needle retracting position to the needle exiting position, the limiting structure 331 of the positioning member 33 limits the first circular wheel 133 from moving along the length direction of the first petal needle 131. In other words, the limiting structure 331 is used to limit the first circular wheel 133 from moving along the length direction of the first petal needle 131 when the winding mechanism 13 rotates from the needle retracting position to the needle exiting position. The second toggle member 321 has an arc-shaped plate 3211, which is used to push the second circular wheel 136 to drive the second petal needle 134 to move along the needle-out direction, and the process of the winding mechanism 13 rotating from the needle-retracting position to the needle-out position is that the arc-shaped plate 3211 also abuts the second circular wheel 136, that is, the arc-shaped plate 3211 is used to push the second circular wheel 136 to move the needle out when the winding mechanism 13 rotates from the needle-retracting position to the needle-out position. With this structure, after the winding mechanism 13 retracts the needle, in the process of moving the winding mechanism 13 from the needle-retracting position to the needle-out position, the second needle-retracting drive assembly 322 can simultaneously push the second toggle member 321 to move along the needle-out direction, and push the second circular wheel 136 to drive the second petal needle 134 to move out, that is, the movement of the winding mechanism 13 from the needle-retracting position to the needle-out position and the needle-out of the second petal needle 134 are carried out simultaneously to improve efficiency. As the winding mechanism 13 moves from the needle retraction position to the needle output position, the limiting structure 331 of the positioning member 33 limits the first circular wheel 133 from moving along the length direction of the first petal needle 131, thereby preventing the first petal needle 131 from moving with the second petal needle 134 when the needle is output.

[0065] In one embodiment, the limiting structure 331 can be an arcuate surface provided on the positioning member 33, which abuts the first circular wheel 133 through the arcuate surface, thereby limiting the movement of the first circular wheel 133 along the length direction of the first petal needle 131, and the arcuate surface can also guide the first circular wheel 133 to move from the needle withdrawal position to the needle exit position. It can be understood that the limiting structure 331 can also be an arcuate groove provided on the positioning member 33, and the positioning member 33 is installed on the mover. When the first circular wheel 133 moves to the positioning member 33 after the needle is withdrawn, the positioning member 33 is driven by the mover to move, so that the first circular wheel 133 is placed in the arcuate groove of the positioning member 33, so as to limit the movement of the first circular wheel 133 along the length direction of the first petal needle 131.

[0066] In one embodiment, see Figure 2 、 Figures 7 to 9The needle withdrawal unit 30 also includes a guide rail 34, on which the first toggle member 311 and the second toggle member 321 are respectively slidably mounted. The guide rail 34 is supported on the frame 21, and the guide rail 34 can be used to support and guide the movement of the first toggle member 311 and the second toggle member 321 to ensure that the first toggle member 311 and the second toggle member 321 move smoothly.

[0067] In one embodiment, see Figure 1 、 Figures 7 to 9 The needle ejection device 20 further includes a driving shaft 24, a main motor 22, and a support shaft 25. The driving shaft 24 is rotatably mounted on the frame 21, and the support shaft 25 is mounted on the frame 21. The frame 21 supports the driving shaft 24 and the support shaft 25. The driving shaft 24 is connected to the main motor 22, and the main motor 22 drives the driving shaft 24 to rotate. The main motor 22 drives the driving shaft 24 to rotate to increase power.

[0068] The first needle withdrawal drive assembly 312 includes a first connecting rod 3121, a first rocking arm 3122 and a first cam 3123. The first cam 3123 is installed on the active shaft 24. The middle part of the first rocking arm 3122 is rotatably installed on the support shaft 25. One end of the first rocking arm 3122 is hinged to the first connecting rod 3121, and the other end of the first rocking arm 3122 is connected to the first cam 3123. The first connecting rod 3121 is connected to the first toggle member 311, so that when the active shaft 24 rotates, it can drive the first cam 3123 to rotate, thereby pushing the first rocking arm 3122 to swing on the support shaft 25, and driving the first toggle member 311 to move along the guide rail 34 through the first connecting rod 3121.

[0069] It is understandable that the first needle withdrawal drive assembly 312 can also use a linear drive such as a cylinder, a linear motor, a screw-nut mechanism, a gear rack mechanism, etc. to drive the first shifting member 311 to move.

[0070] In one embodiment, see Figure 1 、 Figures 7 to 9 The second needle withdrawal drive assembly 322 includes a second connecting rod 3221, a second rocker arm 3222 and a second cam 3223. The second cam 3223 is installed on the driving shaft 24. The middle part of the second rocker arm 3222 is rotatably installed on the support shaft 25. One end of the second rocker arm 3222 is hinged to the second connecting rod 3221, and the other end of the second rocker arm 3222 is connected to the second cam 3223. The second connecting rod 3221 is connected to the second toggle member 321, so that when the driving shaft 24 rotates, the second cam 3223 can be driven to rotate, thereby pushing the second rocker arm 3222 to swing on the support shaft 25, and driving the second toggle member 321 to move along the guide rail 34 through the second connecting rod 3221.

[0071] It is understandable that the second needle withdrawal drive assembly 322 can also use a linear drive such as a cylinder, a linear motor, a screw-nut mechanism, a gear rack mechanism, etc. to drive the second shifting member 321 to move.

[0072] In one embodiment, see Figure 1 、 Figures 7 to 9 The second needle withdrawal drive assembly 322 also includes a pusher 3224, which is mounted on the frame 21. The pusher 3224 is used to drive the second toggle member 321 to drive the second circular wheel 136 to move out of the needle. That is to say, when the second petal needle 134 is out of the needle, the second toggle member 321 is pushed to move by the pusher 3224, and the needle is withdrawn faster and more efficiently. In addition, the pusher 3224 is provided, and the second toggle member 321 can be pushed to move by the cooperation of the pusher 3224 and the main motor 22, which can reduce the power required by the main motor 22, and the pusher 3224 can be made smaller, and a certain buffer can be increased by the pusher 3224 so that the second toggle member 321 moves more smoothly. It is understandable that the second connecting rod 3221 can also be used to push the second toggle member 321 to drive the second circular wheel 136 to move out of the needle.

[0073] In one embodiment, one end of the pusher 3224 is hinged to the second toggle member 321, and the other end of the pusher 3224 is hinged to the frame 21 to push the second toggle member 321 to move. It is understood that the pusher 3224 can also be hinged to the second rocker 3222, and the second rocker 3222 can be pushed to swing to push the second toggle member 321 to move.

[0074] In one embodiment, the pusher 3224 can use a linear drive such as a cylinder, a linear motor, a screw-nut mechanism, a gear rack mechanism, etc.

[0075] In one embodiment, see Figure 1 、 Figures 7 to 9 A pushing wheel 411 may be provided on the pushing member 41 to push the first circular wheel 133 more smoothly.

[0076] In one embodiment, see Figure 1 、 Figures 7 to 9 The needle-extraction drive assembly 42 includes a slide rail 425 , on which the pusher 41 is slidably mounted. The slide rail 425 is supported on the frame 21 , and the slide rail 425 can be used to support and guide the movement of the pusher 41 to ensure that the pusher 41 moves smoothly.

[0077] In one embodiment, the needle-extraction drive assembly 42 further includes a mounting plate 426 , the slide rail 425 is mounted on the mounting plate 426 , and the mounting plate 426 is mounted on the frame 21 to support the slide rail 425 through the mounting plate 426 .

[0078] In one embodiment, see Figure 1 、 Figure 7 and Figure 10 The needle-out driving assembly 42 also includes a third connecting rod 421, a third rocker arm 422 and a third cam 423. The third cam 423 is installed on the driving shaft 24. The middle part of the third rocker arm 422 is rotatably installed on the support shaft 25. One end of the third rocker arm 422 is hinged to the third connecting rod 421, and the other end of the third rocker arm 422 is connected to the third cam 423. The third connecting rod 421 is connected to the pushing member 41, so that when the driving shaft 24 rotates, it can drive the third cam 423 to rotate, thereby pushing the third rocker arm 422 to swing on the support shaft 25, and driving the pushing member 41 to move along the slide rail 425 through the third connecting rod 421.

[0079] It is understandable that the needle-extraction drive assembly 42 may also use a linear drive such as a cylinder, a linear motor, a screw-nut mechanism, a gear rack mechanism, etc. to drive the pusher 41 to move.

[0080] In one embodiment, see Figure 1 、 Figure 7 and Figure 10 The needle-extraction drive assembly 42 further includes a pusher 424, which is mounted on the frame 21. The pusher 424 is used to drive the pusher 41 to move along the slide rail 425. In other words, the pusher 424 is used to push the pusher 41 to move, which is faster and more efficient. In addition, by providing the pusher 424, the pusher 424 can be used to cooperate with the main motor 22 to push the pusher 41 to move, which can reduce the power required by the main motor 22, and can also make the pusher 424 smaller. In addition, a certain buffer can be added by the pusher 424 so that the pusher 41 moves more smoothly. It is understandable that the pusher 41 can also be pushed to move along the slide rail 425 only by the third connecting rod 421.

[0081] In one embodiment, one end of the pusher 424 is hinged to the third rocker 422, and the other end of the pusher 424 is hinged to the frame 21. By pushing the third rocker 422 to swing, the pusher 41 is driven to move. It is understood that the pusher 424 can also be hinged to the pusher 41 to drive the pusher 41 to move.

[0082] In one embodiment, the pusher 424 may use a linear actuator such as a cylinder, a linear motor, a screw-nut mechanism, a gear rack mechanism, etc.

[0083] In one embodiment, see Figure 1 、 Figure 7 and Figure 11The needle ejection device 20 further includes a detection unit 50 mounted on the frame 21. When the winding mechanism 13 rotates to the winding position, the detection unit 50 can sense the first circular wheel 133, thereby determining that the winding mechanism 13 has reached the winding position, so as to drive the winding mechanism 13 to rotate.

[0084] In one embodiment, see Figure 1 、 Figure 7 and Figure 11 The detection unit 50 includes a detector 51 and a bracket 52. The bracket 52 is mounted on the frame 21. The detector 51 is mounted on the bracket 52. The detector 51 is supported on the frame 21 by the bracket 52 so that the detector 51 senses the first circular wheel 133. The detector 51 can be a photoelectric sensor, a Hall sensor, a visual sensor, etc.

[0085] In one embodiment, see Figure 1 and Figure 7 A transmission mechanism 23 is installed on the frame 21, and the transmission mechanism 23 connects the driving wheel 142 and the main motor 22. The transmission mechanism 23 is set to facilitate the position layout of the main motor 22, and the transmission mechanism 23 can also play a role in deceleration and increase torque.

[0086] In one embodiment, the rotary drive assembly 16 includes a gearbox 164, a main gear 161, a slave gear 162, and a toothed belt 163. The main gear 161 is mounted on the driving shaft 24, the slave gear 162 is connected to the gearbox 164, and the gearbox 164 is connected to the winding drum 12. Thus, the main motor 22 drives the driving shaft 24 to rotate, and the winding drum 12 is driven to rotate via the main gear 161, the toothed belt 163, the slave gear 162, and the gearbox 164. It is understandable that the rotary drive assembly 16 can also directly use a motor with gears to drive the winding drum 12 to rotate.

[0087] The exit needle device 20 and the winding machine 100 of the embodiment of the present application can move the second petal needle 134 out of the needle during the process of the winding mechanism 13 rotating from the needle exit position to the needle exit position, thereby improving efficiency, and when the second petal needle 134 is exiting the needle, the axial position of the first petal needle 131 can be kept unchanged, thereby improving the clamping success rate and quality of the material strip for making the battery cell 90, and improving the efficiency and quality of making the battery cell 90.

[0088] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A needle ejection device, characterized in that include: frame; The needle withdrawal unit includes a first needle withdrawal mechanism, a second needle withdrawal mechanism and a positioning member, the first needle withdrawal mechanism includes a first toggle member for toggling the first circular wheel of the first petal needle tail of the winding mechanism to withdraw the needle and a first needle withdrawal drive assembly for driving the first toggle member to move, the first needle withdrawal drive assembly being mounted on the frame; the second needle withdrawal mechanism includes a second toggle member for toggling the second circular wheel of the second petal needle tail of the winding mechanism to withdraw and eject the needle and a second needle withdrawal drive assembly for driving the second toggle member to move, the second needle withdrawal drive assembly being mounted on the frame; the positioning member is provided on the moving path of the first circular wheel, and the positioning member is used to position the first circular wheel when the second petal needle moves to eject the needle; a needle-extracting unit, comprising a pushing member for pushing the first circular wheel to move the needle out and a needle-extracting driving assembly for driving the pushing member to move, wherein the needle-extracting driving assembly is mounted on the frame; The positioning member has a limiting structure, which is used to limit the movement of the first circular wheel along the length direction of the first petal needle when the winding mechanism rotates from the needle retracting position to the needle outputting position; the second toggle member has an arc-shaped plate, which is used to push the second circular wheel to move the needle out when the winding mechanism rotates from the needle retracting position to the needle outputting position.

2. The needle ejection device according to claim 1, wherein: The needle withdrawal unit further includes a guide rail, the first toggle member and the second toggle member are respectively slidably mounted on the guide rail, and the guide rail is supported on the frame.

3. The needle ejection device according to claim 2, wherein: The needle withdrawal device also includes a driving shaft, a main motor that drives the driving shaft to rotate, and a support shaft spaced apart from the driving shaft. The driving shaft is rotatably mounted on the frame, and the support shaft is mounted on the frame; the first needle withdrawal drive assembly includes a first connecting rod connected to the first toggle member, a first rocker arm hinged at one end to the first connecting rod, and a first cam that pushes the other end of the first rocker arm to swing. The first cam is mounted on the driving shaft, and the middle part of the first rocker arm is rotatably mounted on the support shaft.

4. The needle ejection device according to claim 3, wherein: The second needle withdrawal drive assembly includes a second connecting rod connected to the second toggle member, a second rocker hinged at one end to the second connecting rod, and a second cam that pushes the other end of the second rocker to swing, the second cam is installed on the active shaft, and the middle part of the second rocker is rotatably installed on the support shaft.

5. The needle ejection device of claim 4, wherein: The second needle withdrawal drive assembly further includes a pusher for driving the second toggle member to drive the second circular wheel to move the needle out, and the pusher is mounted on the frame.

6. The needle ejection device of claim 3, wherein: The needle-out driving assembly includes a slide rail, a third connecting rod connected to the pushing member, a third rocker arm hinged to the third connecting rod at one end, and a third cam that pushes the other end of the third rocker arm to swing. The pushing member is slidably mounted on the slide rail, the third cam is mounted on the driving shaft, the middle part of the third rocker arm is rotatably mounted on the support shaft, and the slide rail is supported on the frame.

7. The needle ejection device of claim 6, wherein: The needle-extracting drive assembly further includes a pusher for driving the pusher to move along the slide rail, and the pusher is mounted on the frame.

8. The needle ejection device of claim 1, wherein: It also includes a detection unit for sensing the first round wheel to detect that the winding mechanism reaches the winding position, and the detection unit is installed on the frame.

9. A winding machine, comprising a winding device, the winding device comprising a winding frame, a winding drum rotatably mounted on the winding frame, a winding mechanism mounted in the winding drum, and a rotary drive assembly for driving the winding drum to rotate, the winding mechanism comprising a rotating drum, a first petal needle and a second petal needle, the rotating drum rotatably mounted in the winding drum, a first round wheel being provided at the tail of the first petal needle, a second round wheel being provided at the tail of the second petal needle, the first petal needle sliding through the rotating drum, and the second petal needle sliding through the first round wheel and the rotating drum; characterized in that: Also included is an exit needle device as described in any one of claims 1-8.

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