Winding Equipment and Its Electrode Sheet Feeding Device

Abstract

The present invention discloses a winding device and a pole piece feeding device thereof. The pole piece feeding device includes a sheet inserting mechanism, a cutting mechanism and a feeding mechanism. The sheet inserting mechanism is used for clamping a strip of material, and the cutting mechanism is used for cutting the strip of material. After the strip of material is cut, the sheet inserting mechanism further conveys the strip of material in a direction closer to the winding needle or the cutting mechanism moves in a direction away from the winding needle, so that the leading end of the strip of material is exposed outside the cutting mechanism. The feeding mechanism is used for clamping the leading end of the strip of material and moving in a direction closer to the winding needle, so that the leading end of the strip of material approaches and is fed into the winding needle. Before the cutting mechanism cuts the strip of material, the sheet inserting mechanism clamps the strip of material, so that the strip of material is in a tensioned state for easy cutting. After the strip of material is cut, the feeding mechanism and the sheet inserting mechanism move in a direction closer to the winding needle synchronously, which can not only tension the strip of material, but also ensure that the leading end of the strip of material is accurately sent to the winding needle, improving the alignment degree between the leading end of the strip of material and the feeding position.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and particularly to a winding device and a pole piece feeding device thereof. Background Art

[0002] During the preparation of an electric core, a pole piece needs to be sent to a feeding position. Generally, a pole piece feeding device is used to complete the action of sending the pole piece to the feeding position. In the existing pole piece feeding device, generally after the pole piece is cut, the leading end of the pole piece is clamped by two clamping plates and sent to the feeding position in the direction of the feeding position. Since the free section of the leading end is very long after the pole piece is cut, it is difficult to control the alignment between the leading end of the pole piece and the feeding position, and the leading end of the pole piece has no tension and is in a loose state, and it is easy to swing arbitrarily, so that the leading end of the pole piece cannot be accurately sent to the feeding position. Summary of the Invention

[0003] The present invention provides a winding device and a pole piece feeding device thereof to solve the technical problem of low alignment between the leading end of the pole piece and the feeding position.

[0004] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a pole piece feeding device, the pole piece feeding device is used to convey a strip to a winding needle, the pole piece feeding device includes a inserting piece mechanism, a cutting mechanism and a feeding mechanism arranged in sequence along the conveying direction of the strip, the inserting piece mechanism is used to clamp the strip, the cutting mechanism is used to cut the strip, wherein after the strip is cut, the inserting piece mechanism further conveys the strip in the direction closer to the winding needle or the cutting mechanism moves in the direction away from the winding needle, so that the leading end of the strip is exposed outside the cutting mechanism, and the feeding mechanism is used to clamp the leading end of the strip and move in the direction closer to the winding needle, so that the leading end of the strip approaches and is fed into the winding needle.

[0005] Optionally, the pole piece feeding device further includes a mounting plate, a first transmission mechanism, a second transmission mechanism and a third transmission mechanism arranged on the mounting plate, and a first slide rail and a second slide rail arranged in parallel on the mounting plate. The inserting piece mechanism and the cutting mechanism are slidably supported on the first slide rail and move along the first slide rail respectively under the drive of the first transmission mechanism and the second transmission mechanism. The feeding mechanism is slidably supported on the second slide rail and moves along the second slide rail under the drive of the third transmission mechanism.

[0006] Optionally, the pole piece feeding device further includes a guiding mechanism, and the guiding mechanism is arranged between the inserting piece mechanism and the cutting mechanism and / or between the cutting mechanism and the feeding mechanism for guiding the leading end of the strip.

[0007] Optionally, the guiding mechanism includes a scroll spring and a wire. The scroll spring is disposed on one of the inserting mechanism and the cutting mechanism and / or one of the cutting mechanism and the feeding mechanism. One end of the wire is connected to the scroll spring, and the other end of the wire is connected to the other of the inserting mechanism and the cutting mechanism and / or the other of the cutting mechanism and the feeding mechanism. The scroll spring winds or releases the wire as the distance between the inserting mechanism and the cutting mechanism changes and / or the distance between the cutting mechanism and the feeding mechanism changes, and the tape abuts against the wire.

[0008] Optionally, the pole piece feeding device further includes a deviation rectifying mechanism and a first detection mechanism. The deviation rectifying mechanism is disposed upstream of the inserting mechanism along the conveying direction of the tape and is used to rectify the tape entering the pole piece feeding device in the width direction of the tape. The first detection mechanism is disposed between the deviation rectifying mechanism and the inserting mechanism and is used to detect the position of the tape rectified by the deviation rectifying mechanism and feedback the position of the tape to the deviation rectifying mechanism.

[0009] Optionally, the first detection mechanism includes a base, a sliding rod, an adjusting rod, a sensor assembly, a guiding assembly, a first fastener, and a second fastener. The sliding rod is disposed on the base. The sensor assembly and the guiding assembly are slidably supported on the sliding rod. The first fastener is used to connect the sensor assembly and the adjusting rod, and the second fastener is used to connect the guiding assembly and the adjusting rod. The adjusting rod is used to adjust the position of the sensor assembly and / or the guiding assembly connected to the adjusting rod on the sliding rod. The sensor assembly is used to detect the position of the tape, and the guiding assembly is correspondingly disposed at the tab position of the tape and is used to guide the tab.

[0010] Optionally, the sensor assembly includes a first connecting portion and a sensor disposed on the first connecting portion. The guiding assembly includes a second connecting portion and a first guiding plate disposed on the second connecting portion. The first connecting portion and the second connecting portion are slidably disposed on the sliding rod. The first detection mechanism further includes an adjusting screw, and the adjusting screw is rotatably disposed on the base. Wherein, the driving end of the adjusting screw is threadedly connected to the first connecting portion, and the adjusting screw is used to adjust the position of the first connecting portion on the sliding rod; or the driving end of the adjusting screw is threadedly connected to the second connecting portion, and the adjusting screw is used to adjust the position of the second connecting portion on the sliding rod.

[0011] Optionally, the pole piece feeding device further includes a second detection mechanism and a third detection mechanism. The second detection mechanism and the third detection mechanism are arranged between the inserting mechanism and the cutting mechanism. The second detection mechanism is used to detect the cutting position of the strip; the third detection mechanism is correspondingly arranged at the tab position of the strip and is used to detect whether the tab has a folded corner.

[0012] Optionally, the third detection mechanism includes a detection bracket and a first sensor and a second sensor arranged on the detection bracket. The tab has a first end connected to the strip and a second end far from the connection between the tab and the strip. The first sensor and the second sensor are arranged at intervals along the connection line direction of the first end and the second end. The first sensor is used to detect the length of the tab at the position corresponding to the first sensor, and the second sensor is used to detect the length of the tab at the position corresponding to the second sensor. Then, according to the length ratio of the tab detected by the first sensor and the length of the tab detected by the second sensor, it is judged whether the tab is bent.

[0013] Optionally, the detection bracket includes a first mounting portion, a second mounting portion, and a connecting portion connecting the first mounting portion and the second mounting portion. The first mounting portion and the second mounting portion are arranged in parallel at intervals. Both the first sensor and the second sensor include a transmitting end and a receiving end, and the transmitting end and the receiving end are respectively arranged on the first mounting portion and the second mounting portion.

[0014] Optionally, the feeding mechanism drives the leading end of the strip to approach the coiling needle in a linear movement manner and feeds the leading end of the strip into the coiling needle in a rolling manner. The feeding mechanism further corrects the deviation of the leading end of the strip in the width direction of the strip.

[0015] Optionally, the pole piece feeding device includes a mounting plate, and the feeding mechanism includes: a fixed seat slidably supported on the mounting plate;

[0016] a fixed bracket slidably supported on the fixed seat; a driving roller and a driven roller rotatably supported on the fixed bracket; a clamping driving member for driving the driving roller and the driven roller to approach each other relatively, thereby clamping the leading end of the strip, wherein the fixed seat moves towards the coiling needle under the drive of the third transmission mechanism, and thus drives the leading end of the strip to approach the coiling needle in a linear movement manner; a deviation correction driving member for driving the fixed bracket to move relative to the fixed seat, thereby correcting the deviation of the leading end of the strip in the width direction of the strip; a feeding driving member for driving the driving roller to drive the driven roller to roll, thereby feeding the leading end of the strip into the coiling needle in a rolling manner.

[0017] To solve the above technical problems, another technical solution adopted by the present invention is: to provide a winding device, which includes a winding needle and the above-mentioned pole piece feeding device. The pole piece feeding device is used to convey a strip to the winding needle, and the winding needle is used to wind the strip to form an electric core.

[0018] The beneficial effects of the present invention are as follows: Different from the prior art, in the embodiments of the present invention, by arranging an inserting sheet mechanism upstream of the cutting mechanism and a feeding mechanism downstream of the cutting mechanism, on the one hand, before the cutting mechanism cuts the strip, the inserting sheet mechanism clamps the strip, which can make the strip in a tensioned state for easy cutting. On the other hand, after the cutting mechanism finishes cutting, the feeding mechanism clamps the leading end of the strip and moves it in the direction close to the winding needle. This can not only tension the strip, but also ensure that the leading end of the strip can be accurately sent to the winding needle because the leading end of the strip is clamped and sent to a position closer to the winding needle, thereby improving the alignment degree between the leading end of the strip and the feeding position of the winding needle. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0020] Figure 1 is a schematic plan view of the pole piece feeding device in an embodiment of the present invention;

[0021] Figure 2 is Figure 1 a schematic plan view of the inserting sheet mechanism in;

[0022] Figure 3 is Figure 1 a schematic left view of some components in;

[0023] Figure 4 is Figure 3 a schematic right view of some components in;

[0024] Figure 5 is Figure 1 a schematic plan view of the guiding mechanism in a perspective;

[0025] Figure 6 is Figure 1 a schematic plan view of the guiding mechanism in another perspective;

[0026] Figure 7 is Figure 1 a schematic plan view of the first detection mechanism in;

[0027] Figure 8 is Figure 1 a schematic plan view of the second and third inspection mechanisms in

[0028] Figure 9 is Figure 1 a schematic plan view of the feeding mechanism in

[0029] Figure 10 is Figure 9 a schematic plan view of the feeding mechanism in another perspective. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1 , Figure 1 is a schematic plan view of a pole piece feeding device in an embodiment of the present invention. On the one hand, the present invention provides a pole piece feeding device 100, which is used to convey a strip 300 to a winding needle 200. The pole piece feeding device 100 includes a inserting piece mechanism 10, a cutting mechanism 20, and a feeding mechanism 30 that are sequentially arranged along the conveying direction of the strip 300. The inserting piece mechanism 10 is used to clamp the strip 300, and the cutting mechanism 20 is used to cut the strip 300. After the strip 300 is cut, the inserting piece mechanism 10 further conveys the strip 300 in the direction closer to the winding needle 200 or the cutting mechanism 20 moves in the direction away from the winding needle 200, so that the leading end of the strip 300 is exposed outside the cutting mechanism 20. The feeding mechanism 30 is used to clamp the leading end of the strip 300 and move in the direction closer to the winding needle 200, so that the leading end of the strip 300 approaches and is fed into the winding needle 200.

[0032] In the embodiment of the present invention, by arranging the inserting mechanism 10 upstream of the cutting mechanism 20 and the feeding mechanism 30 downstream of the cutting mechanism 20, on the one hand, before the cutting mechanism 20 cuts the strip 300, the inserting mechanism 10 clamps the strip 300, which can make the strip 300 in a tensioned state for easy cutting. On the other hand, after the cutting mechanism 20 finishes cutting, the feeding mechanism 30 clamps the head end of the strip 300 and moves it in the direction close to the winding needle 200. This can not only tension the strip 300, but also ensure that the head end of the strip 300 can be accurately sent to the winding needle 200 because the head end of the strip 300 is clamped and sent to a position closer to the winding needle 200, so as to improve the alignment degree of the head end of the strip 300 and the feeding position of the winding needle 200.

[0033] Among them, in this embodiment, as Figure 1 shown, the conveying direction of the strip 300 is the arrow direction shown in the figure, and the inserting mechanism 10, the cutting mechanism 20 and the feeding mechanism 30 are arranged in sequence along the arrow direction shown in the figure. The working principle of the pole piece feeding device 100 in this embodiment is generally as follows: when a battery cell is almost wound up, the inserting mechanism 10 acts to clamp the strip 300, the cutting mechanism 20 cuts off the strip 300, the winding needle 200 rotates to wind up the tail of the strip 300 to complete the winding of the previous battery cell, the cut strip 300 is clamped by the inserting mechanism 10, the inserting mechanism 10 first clamps the head of the pole piece strip 300 and moves a short distance in the direction of the winding needle 200 or the cutting mechanism 20 moves a short distance in the direction away from the winding needle 200 so that the head end of the strip 300 extends out of the cutting mechanism 20, the feeding mechanism 30 moves in the direction away from the winding needle 200 to the position of the head end of the strip 300, clamps the head end of the strip 300, and moves in the direction close to the winding needle 200. At this time, because the head end of the strip 300 is clamped and sent to a position close to the winding needle 200, the position of the strip 300 is accurate. Finally, the feeding mechanism 30 rotates to convey the strip 300 in the direction of the winding needle 200, and the winding needle 200 winds up the head end of the strip 300 and continues to rotate until a battery cell is wound up.

[0034] Among them, in one embodiment, during the process that the feeding mechanism 30 clamps the head end of the strip 300 and moves in the direction close to the winding needle 200, the inserting mechanism 10 can clamp the strip 300 and move in the direction close to the winding needle 200 synchronously with the feeding mechanism 30. In another embodiment, during the process that the feeding mechanism 30 clamps the head end of the strip 300 and moves in the direction close to the winding needle 200, the inserting mechanism 10 can release the strip 300, and the inserting mechanism 10 does not move following the feeding mechanism 30.

[0035] Among them, in this embodiment, as Figure 2 shown, Figure 2 is Figure 1Schematic plan view of the insert mechanism therein. The insert mechanism 10 may include a mounting bracket 12, a fixed pinch roller 14 disposed on the mounting bracket 12, and a movable pinch roller 16 disposed opposite to the fixed pinch roller 14. The movable pinch roller 16 is disposed on a movable pinch roller seat 18. One end of a guide post 11 is connected to the movable pinch roller seat 18. The guide post 11 is slidably disposed on the mounting bracket 12. A clamping cylinder 13 is further disposed on the mounting bracket 12. The driving end of the clamping cylinder 13 is connected to the movable pinch roller seat 18. The clamping cylinder 13 can drive the movable pinch roller 16 to move relative to the fixed pinch roller 14 to clamp or release the strip 300.

[0036] Of course, in other embodiments, the insert mechanism 10 may also adopt other types of structures, and the embodiments of the present invention do not make specific limitations.

[0037] In this embodiment, as Figure 1 , Figure 3 and Figure 4 shown, Figure 3 is Figure 1 the left view structural schematic diagram of some components in Figure 4 is Figure 3 the right view structural schematic diagram of some components in The pole piece feeding device 100 further includes a mounting plate 40, a first transmission mechanism 50, a second transmission mechanism 60, and a third transmission mechanism 70 disposed on the mounting plate 40, and a first slide rail 42 and a second slide rail 44 disposed in parallel on the mounting plate 40. The insert mechanism 10 and the cutting mechanism 20 are slidably supported on the first slide rail 42 and move along the first slide rail 42 respectively under the transmission of the first transmission mechanism 50 and the second transmission mechanism 60. The feeding mechanism 30 is slidably supported on the second slide rail 44 and moves along the second slide rail 44 under the transmission of the third transmission mechanism 70.

[0038] Specifically, the mounting plate 40 is provided with a direction along the transmission of the strip 300 ( Figure 3A first slide rail 42 and a second slide rail 44 extending in the up-down direction shown in the figure. A first slider 41 and a second slider 43 are slidably arranged on the first slide rail 42, and a third slider 45 is slidably arranged on the second slide rail 44. A first slide base 46 is arranged on the first slider 41, and an inserting piece mechanism 10 is arranged on the first slide base 46. The first slide base 46 is power-connected to a first transmission mechanism 50, and the first transmission mechanism 50 can drive the first slide base 46 to move up and down, thereby driving the inserting piece mechanism 10 located on the first slide base 46 to move up and down. A second slide base 47 is arranged on the second slider 43, and a cutting mechanism 20 is arranged on the second slide base 47. The second slide base 47 is power-connected to a second transmission mechanism 60, and the second transmission mechanism 60 can drive the second slide base 47 to move up and down. A third slide base 48 is arranged on the third slider 45, and a feeding mechanism 30 is arranged on the third slide base 48. The third slide base 48 is power-connected to a third transmission mechanism 70, and the third transmission mechanism 70 can drive the third slide base 48 to move up and down. By arranging the inserting piece mechanism 10 and the cutting mechanism 20 on the first slide rail 42 and arranging the feeding mechanism 30 on the second slide rail 44, the movement interference between the feeding mechanism 30 and the cutting mechanism 20 can be avoided, and the stroke of the feeding mechanism 30 can be increased.

[0039] Optionally, as Figure 3 shown, the number of both the first slide rail 42 and the second slide rail 44 is two. The two second slide rails 44 are arranged between the two first slide rails 42. The first slider 41 is slidably connected to the two first slide rails 42, the second slider 43 is slidably connected to the two first slide rails 42, and the third slider 45 is slidably connected to the two second slide rails 44, so that the movements of the first slide base 46, the second slide base 47 and the third slide base 48 are more stable.

[0040] Among them, as Figure 3 and Figure 4 shown, the first transmission mechanism 50 includes a first motor 51, a first lead screw 52 and a first lead screw nut 53. The first lead screw 52 is rotatably arranged on the mounting plate 40, and the axial direction of the first lead screw 52 is parallel to the extending direction of the first slide rail 42. The driving end of the first motor 51 is connected to the first lead screw 52 for driving the first lead screw 52 to rotate. The first lead screw nut 53 is screwed to the first lead screw 52 and is connected to the first slide base 46. When the first lead screw 52 rotates, the first lead screw nut 53 drives the first slide base 46 to move up and down relative to the mounting plate 40.

[0041] Optionally, in the present embodiment, the first motor 51 is connected to the first screw rod 52 through a synchronous belt assembly, and the first screw rod 52 is arranged on the back of the mounting plate 40. Specifically, the first motor 51 is arranged on the first motor fixing seat 54, a synchronous wheel 55 is arranged at the driving end of the first motor 51, the first screw rod 52 is arranged on the first screw rod support 56, the first screw rod support 56 is arranged on the back of the mounting plate 40, a synchronous wheel 55 is arranged at one end of the first screw rod 52, and the two synchronous wheels 55 are connected through a synchronous belt 57, and a first screw rod nut 53 is arranged on the first screw rod 52, and the first screw rod nut 53 is connected to the first slide 46 through a driving block. The first motor 51 drives the first screw rod 52 to rotate through the synchronous belt assembly, and then drives the first slide 46 to move up and down. By adopting a synchronous belt assembly to transfer the first motor 51 and the first screw rod 52, the structure of the first transmission mechanism 50 can be made more compact, thereby reducing the volume of the first transmission mechanism 50. Installing the first screw rod 52 on the back side of the mounting plate 40 can prevent the first screw rod 52 from interfering with the inserting mechanism 10 , the cutting mechanism 20 and the feeding mechanism 30 located on the main surface of the mounting plate 40 .

[0042] In another embodiment, the first motor 51 may also be connected to the first screw rod 52 through a coupling or other components, which is not specifically limited in the present embodiment. The structures of the second transmission mechanism 60 and the third transmission mechanism 70 are similar to those of the first transmission mechanism 50. For details, please refer to the configuration of the first transmission mechanism 50, which will not be described in detail here.

[0043] Furthermore, the electrode feeding device 100 further includes a guide mechanism 80, see Figure 1 , Figure 5 and Figure 6 , Figure 5 yes Figure 1 A schematic diagram of the planar structure of the guide mechanism in a certain viewing angle. Figure 6 yes Figure 1 The guiding mechanism 80 is arranged between the inserting mechanism 10 and the cutting mechanism 20, and is used to guide the head end of the material belt 300 to prevent the head end of the material belt 300 from swinging arbitrarily.

[0044] In this embodiment, the guide mechanism 80 includes a spiral spring (not shown in the figure) and a wire 81. The spiral spring is arranged on one of the inserting mechanism 10 and the cutting mechanism 20. One end of the wire 81 is connected to the spiral spring, and the other end of the wire 81 is connected to the other of the inserting mechanism 10 and the cutting mechanism 20. The spiral spring reels or releases the wire 81 as the distance between the inserting mechanism 10 and the cutting mechanism 20 changes, and the material strip 300 is attached to the wire 81.

[0045] Specifically, in one embodiment, the scroll spring is disposed on the inserting mechanism 10. One end of the wire 81 is connected to the scroll spring, and the other end of the wire 81 is connected to the cutting mechanism 20 through a pressing block or the like. When the inserting mechanism 10 and the cutting mechanism 20 move relative to each other so that the distance therebetween changes, the wire 81 can contract or extend under the action of the scroll spring to always maintain a tensioned state. The strip 300 located between the inserting mechanism 10 and the cutting mechanism 20 is supported on the wire 81, thereby avoiding any swaying of the strip 300 and its leading end.

[0046] It can be understood that, in another embodiment, the scroll spring can also be disposed on the cutting mechanism 20. One end of the wire 81 is connected to the scroll spring, and the other end of the wire 81 is connected to the inserting mechanism 10 through a pressing block or the like. The operation process is the same as that in the previous embodiment and will not be elaborated here.

[0047] In another embodiment, the guiding mechanism 80 can also be disposed between the cutting mechanism 20 and the feeding mechanism 30. The scroll spring is disposed on one of the cutting mechanism 20 and the feeding mechanism 30. One end of the wire 81 is connected to the scroll spring, and the other end of the wire 81 is connected to the other of the cutting mechanism 20 and the feeding mechanism 30. The scroll spring winds or releases the wire 81 as the distance between the cutting mechanism 20 and the feeding mechanism 30 changes, and the strip 300 abuts against the wire 81.

[0048] In other embodiments, the guiding mechanism 80 can also be disposed at any position where the strip 300 needs to be guided. The embodiments of the present invention do not make specific limitations and can be flexibly set according to needs.

[0049] Further, as Figure 1 shown, the pole piece feeding device 100 further includes a deviation rectifying mechanism 90 and a first detection mechanism 110. The deviation rectifying mechanism 90 is disposed upstream of the inserting mechanism 10 along the conveying direction of the strip 300 and is used to rectify the strip 300 entering the pole piece feeding device 100 in the width direction of the strip 300. The first detection mechanism 110 is disposed between the deviation rectifying mechanism 90 and the inserting mechanism 10 and is used to detect the position of the strip 300 rectified by the deviation rectifying mechanism 90 and feedback the position of the strip 300 to the deviation rectifying mechanism 90 to control the deviation rectifying mechanism 90 to perform deviation rectification.

[0050] Among them, the deviation rectifying mechanism 90 can be a serpentine deviation rectifying mechanism, and this serpentine deviation rectifying mechanism can adopt the settings in the prior art and will not be elaborated here. After the strip 300 enters the serpentine deviation rectifying mechanism for deviation rectification, the output strip 300 enters the inserting mechanism 10 after passing through the first detection mechanism 110. Since the first detection mechanism 110 can detect and feedback the position of the strip 300 to the serpentine deviation rectifying mechanism in real time, so that the serpentine deviation rectifying mechanism can timely adjust the position of the strip 300, the position of the strip 300 can be ensured to be accurate.

[0051] In this embodiment, the deviation rectifying mechanism 90 and the inserting sheet mechanism 10 can be simultaneously arranged on the first sliding seat 46, so that the deviation rectifying mechanism 90 and the inserting sheet mechanism 10 always remain in a relatively static state, and further the strip 300 between the inserting sheet mechanism 10 and the deviation rectifying mechanism 90 always remains in a tensioned state.

[0052] Among them, please refer to Figure 7 , Figure 7 is Figure 1 a schematic plan view of the first detection mechanism in . The first detection mechanism 110 includes a base 111, a sliding rod 112, an adjusting rod 113, a sensor assembly 114, a guiding assembly 115, a first fastener 116 and a second fastener 117. The sliding rod 112 is arranged on the base 111. The sensor assembly 114 and the guiding assembly 115 are slidably supported on the sliding rod 112. The first fastener 116 is used to connect the sensor assembly 114 and the adjusting rod 113, and the second fastener 117 is used to connect the guiding assembly 115 and the adjusting rod 113. The adjusting rod 113 is used to adjust the positions of the sensor assembly 114 and / or the guiding assembly 115 connected to the adjusting rod 113 on the sliding rod 112. The sensor assembly 114 is used to detect the position of the strip 300, and the guiding assembly 115 is correspondingly arranged at the tab position of the strip 300 for guiding the tab.

[0053] Specifically, the base 111 is arranged on the first sliding seat 46. Two connecting blocks 118 are arranged on the base 111, and the sliding rod 112 is arranged on the two connecting blocks 118. The sensor assembly 114 and the guiding assembly 115 are slidably supported on the sliding rod 112. The adjusting rod 113 is connected between the sensor assembly 114 and the guiding assembly 115. The sensor assembly 114 is fastened or loosened through the first fastener 116 and the adjusting rod 113. The guiding assembly 115 is fastened or loosened through the second fastener 117 and the adjusting rod 113. When the first fastener 116 is tightened, the position of the sensor assembly 114 can be quickly adjusted manually by using the adjusting rod 113. When the second fastener 117 is tightened, the position of the guiding assembly 115 can be quickly adjusted manually by using the adjusting rod 113. When both the first fastener 116 and the second fastener 117 are tightened, the positions of the sensor assembly 114 and the guiding assembly 115 on the sliding rod 112 can be quickly adjusted manually by using the adjusting rod 113 to improve the adjustment efficiency of the sensor assembly 114 and the guiding assembly 115.

[0054] Furthermore, as Figure 7 shown, the sensor assembly 114 includes a first connecting portion 1141 and a sensor 1142 arranged on the first connecting portion 1141, and the guiding assembly 115 includes a second connecting portion 1151 and a first guiding plate 1152 arranged on the second connecting portion 1151.

[0055] Specifically, the first connecting portion 1141 and the second connecting portion 1151 are slidably arranged on the sliding rod 112. The sensor 1142 is connected to the first connecting portion 1141 through a sensor bracket. The number of sensors 1142 is two, and the two sensors 1142 are oppositely arranged on the sensor bracket. The tape 300 is conveyed between the two sensors 1142, so as to detect the position of the tape 300. The number of the first guiding plates 1152 is two, and the two first guiding plates 1152 are oppositely arranged on the second connecting portion 1151. The first guiding plates 1152 are arranged corresponding to the positions of the tabs of the tape 300, so that the tabs are conveyed between the two first guiding plates 1152. The first guiding plates 1152 are used for guiding the tabs to prevent the tabs from being bent.

[0056] Furthermore, the first detection mechanism 110 further includes an adjusting screw 119. The adjusting screw 119 is rotatably arranged on the base 111. The driving end of the adjusting screw 119 is used for being screwed with the first connecting portion 1141 or the second connecting portion 1151, and is used for driving the first connecting portion 1141 or the second connecting portion 1151 to move relative to the sliding rod 112.

[0057] Among them, as Figure 7 shown, in this embodiment, the driving end of the adjusting screw 119 is threadedly connected to the second connecting portion 1151. Specifically, the adjusting screw 119 is rotatably arranged on the connecting block 118 for fixing the guiding assembly 115. The driving end of the adjusting screw 119 is threadedly connected to the second connecting portion 1151. When the first fastener 116 and the second fastener 117 are both tightened, by rotating the adjusting screw 119, the adjusting rod 113 and the first connecting portion 1141 can be driven by the second connecting portion 1151 to move to finely adjust the position of the sensor 1142, which is convenient for accurately detecting the position of the tape 300.

[0058] It can be understood that, in another embodiment, the driving end of the adjusting screw 119 can also be connected to the first connecting portion 1141. Specifically, the adjusting screw 119 is rotatably arranged on the connecting block 118 for fixing the sensor assembly 114. The driving end of the adjusting screw 119 is threadedly connected to the first connecting portion 1141. When the first fastener 116 and the second fastener 117 are both tightened, by rotating the adjusting screw 119, the adjusting rod 113 and the second connecting portion 1151 can be driven by the first connecting portion 1141 to move to finely adjust the position of the first guiding plate 1152, which is convenient for guiding the tabs.

[0059] Furthermore, as Figure 1As shown, the pole piece feeding device 100 further includes a second detection mechanism 120 and a third detection mechanism 130. The second detection mechanism 120 and the third detection mechanism 130 are arranged between the inserting mechanism 10 and the cutting mechanism 20. The second detection mechanism 120 is used to detect the cutting position of the strip 300; the third detection mechanism 130 is correspondingly arranged at the tab position of the strip 300 and is used to detect whether the tab has a fold angle.

[0060] Among them, in this embodiment, both the second detection mechanism 120 and the third detection mechanism 130 are arranged on the second sliding seat 47. Please refer to Figure 1 and Figure 8 , Figure 8 is Figure 1 a schematic plan view of the second detection mechanism and the third detection mechanism in

[0061] Optionally, in order to improve the detection accuracy, the first sensor 132 can be correspondingly arranged at a position close to the first end of the tab to detect the length of the tab close to the first end, and the second sensor 133 can be correspondingly arranged at a position close to the second end of the tab to detect the length of the tab close to the second end. Among them, the distance between the first sensor 132 and the first end of the tab and the distance between the second sensor 133 and the second end of the tab can be flexibly set as needed, and the embodiments of the present application do not make specific limitations.

[0062] Specifically, the detection bracket 131 includes a first mounting portion 1311, a second mounting portion 1312, and a connecting portion 1313 connecting the first mounting portion 1311 and the second mounting portion 1312. The first mounting portion 1311 and the second mounting portion 1312 are arranged in parallel at intervals, and the tab is located between the first mounting portion 1311 and the second mounting portion 1312. Both the first sensor 132 and the second sensor 133 include a transmitting end and a receiving end, and the transmitting end and the receiving end are respectively arranged on the first mounting portion 1311 and the second mounting portion 1312. When the tab passes by the first sensor 132 and the second sensor 133, the tab will block the light emitted from the transmitting end to the receiving end. Thus, the length at the position corresponding to the first sensor 132 and the length at the position corresponding to the second sensor 133 of the tab can be calculated based on the light blocking time of the tab and the transmission speed of the tape 300, and further, whether the tab is bent can be judged according to the relationship between the two lengths.

[0063] Among them, if the tab is a rectangular tab, when the length of the tab detected by the first sensor 132 is equal to the length of the tab detected by the second sensor 133, then the tab has no kink. If the tab is a trapezoidal tab, when the length of the tab detected by the first sensor 132 and the length of the tab detected by the second sensor 133 are in a certain proportion, then the tab has no kink. On the contrary, the tab has a kink.

[0064] Optionally, a second guide plate 1314 can also be arranged on the connecting portion 1313. The second guide plate 1314 extends and is arranged within the U-shaped area of the detection bracket 131. The number of the second guide plates 1314 is two, and the two second guide plates 1314 are arranged relatively at intervals. The tab passes through between the two second guide plates 1314. The second guide plate 1314 is used to guide the tab so that the tab passes through the first sensor 132 and the second sensor 133 smoothly, thereby improving the detection accuracy of the first sensor 132 and the second sensor 133.

[0065] Further, the second detection mechanism 120 is connected to the first connecting seat 123 through an assembly bracket 125, and the assembly bracket 125 is arranged in a U shape. The second detection mechanism 120 is a photoelectric sensor, including a transmitting end and a receiving end. The transmitting end and the receiving end are arranged oppositely on the opposite sides of the U-shaped assembly bracket 125. The tape 300 passes through the second detection mechanism 120 between the transmitting end and the receiving end to be used for detecting the cutting position of the tape 300.

[0066] Optionally, as Figure 8 shown, a third connecting seat 126 is also slidably arranged on the guide member 122. A third guide plate 127 is arranged on the third connecting seat 126. The third guide plate 127 supports the tape 300 and is used to guide the tape 300.

[0067] Further, in this embodiment, the feeding mechanism 30 drives the leading end of the strip 300 to approach the winding needle 200 in a linear movement manner, and feeds the leading end of the strip 300 into the winding needle 200 in a rolling manner. The feeding mechanism 30 further corrects the deviation of the leading end of the strip 300 in the width direction of the strip 300. By setting the feeding mechanism 30 to correct the deviation of the leading end of the strip 300 in the width direction of the strip 300, the alignment degree of the leading end of the strip 300 and the winding needle 200 can be further improved, and thus the position of the leading end of the strip 300 is more accurate.

[0068] Specifically, please refer to Figure 9 and Figure 10 , Figure 9 is Figure 1 the schematic plan view of the feeding mechanism in Figure 10 is Figure 9 the schematic plan view of the feeding mechanism in another perspective. The feeding mechanism 30 includes a fixed seat 32, a fixed bracket 34, a driving roller 36, a driven roller 38, a clamping driving member 31, a deviation correcting driving member 33 and a feeding driving member 35. The fixed seat 32 is slidably supported on the mounting plate 40, the fixed bracket 34 is slidably supported on the fixed seat 32, and the driving roller 36 and the driven roller 38 are rotatably supported on the fixed bracket 34; the clamping driving member 31 is used to drive the driving roller 36 and the driven roller 38 to approach relatively, so as to clamp the leading end of the strip 300. Among them, the fixed seat 32 moves towards the winding needle 200 under the drive of the third transmission mechanism 70, so as to drive the leading end of the strip 300 to approach the winding needle 200 in a linear movement manner; the deviation correcting driving member 33 is used to drive the fixed bracket 34 to move relative to the fixed seat 32, so as to correct the deviation of the leading end of the strip 300 in the width direction of the strip 300; the feeding driving member 35 drives the driving roller 36 to drive the driven roller 38 to roll, so as to feed the leading end of the strip 300 into the winding needle 200 in a rolling manner.

[0069] Among them, please refer to Figure 1 , Figure 9 and Figure 10 , the fixed seat 32 is arranged on the third sliding seat 48. The deviation correcting driving member 33 includes a deviation correcting motor 331, a deviation correcting lead screw 332 and a deviation correcting lead screw nut 333. The deviation correcting motor 331 is connected to the deviation correcting lead screw 332 and is used to drive the deviation correcting lead screw 332 to rotate. The deviation correcting lead screw nut 333 is screwed to the deviation correcting lead screw 332. When the deviation correcting lead screw 332 rotates, the deviation correcting lead screw nut 333 can move along the axial direction of the deviation correcting lead screw 332. The deviation correcting lead screw nut 333 is connected to the fixed bracket 34, so as to drive the fixed bracket 34 to move relative to the fixed seat 32.

[0070] Specifically, a deviation rectifying motor fixing seat 334 is arranged on the fixing seat 32. A deviation rectifying motor 331 is arranged on the deviation rectifying motor fixing seat 334. The driving end of the deviation rectifying motor 331 is connected to one end of a deviation rectifying lead screw 332 through a coupling 335. The deviation rectifying lead screw 332 is arranged on a deviation rectifying lead screw support. A deviation rectifying lead screw nut 333 is arranged on the deviation rectifying lead screw 332. The deviation rectifying lead screw nut 333 is connected to a fixing bracket 34 through a deviation rectifying driving block 336. The fixing bracket 34 is provided with a deviation rectifying slider 337. The deviation rectifying slider 337 is arranged on a deviation rectifying slide rail 338. The deviation rectifying slide rail 338 is connected to the fixing seat 32, so as to realize that the fixing bracket 34 is slidably supported on the fixing seat 32. The principle of the movement of the fixing bracket 34 relative to the fixing seat 32 is as follows: The deviation rectifying motor 331 drives the deviation rectifying lead screw 332 to rotate. The deviation rectifying lead screw 332 drives the deviation rectifying lead screw nut 333 screwed thereto to move along the axial direction of the deviation rectifying lead screw 332. The deviation rectifying lead screw nut 333 further drives the fixing bracket 34 to move along the axial direction of the deviation rectifying lead screw 332. In addition, the deviation rectifying slider 337 and the deviation rectifying slide rail 338 arranged between the fixing bracket 34 and the fixing seat 32 can make the movement of the fixing bracket 34 more stable.

[0071] Wherein, the driving roller 36 and the driven roller 38 are rotatably arranged on the fixing bracket 34. When the deviation rectifying driving member 33 drives the fixing bracket 34 to move relative to the fixing seat 32, the driving roller 36 and the driven roller 38 move relative to the fixing seat 32, so as to rectify the deviation of the leading end of the strip 300 in the width direction of the strip 300.

[0072] In this embodiment, the feeding driving member 35 can adopt a feeding motor. The feeding motor is arranged at one end of the fixing bracket 34 through a feeding motor fixing seat. The driving end of the feeding motor is connected to one end of the driving roller 36 through a synchronous pulley and synchronous belt structure, so as to drive the driving roller 36 to rotate, and further feed the leading end of the strip 300 into the winding needle 200 in a rolling manner.

[0073] Wherein, a driven roller fixing seat 341 is arranged on the fixing bracket 34. The driven roller 38 is rotatably supported on the fixing bracket 34 through the driven roller fixing seat 341. The clamping driving member 31 includes a driving cylinder. The driving cylinder is arranged on the fixing bracket 34. The driving end of the driving cylinder is connected to the driven roller fixing seat 341, so as to drive the driven roller fixing seat 341 to move and drive the driven roller 38 located on the driven roller fixing seat 341 to move towards the driving roller 36, so as to clamp the leading end of the strip 300, and drive the leading end of the strip 300 to move close to the winding needle 200 in a linear movement manner under the drive of the third transmission mechanism 70.

[0074] Optionally, a guide rod 342 is also slidably arranged on the fixed bracket 34. One end of the driven roller fixing seat 341 is connected to the guide rod 342. By providing the guide rod 342 on the fixed bracket 34, it can be used to guide the driven roller fixing seat 341, so that the movement of the driven roller 38 is more stable and accurate.

[0075] Optionally, the pole piece feeding device 100 further includes a fourth detection mechanism 140. The fourth detection mechanism 140 is used to detect the position of the tape 300 in real time and feedback the position of the tape 300 to the feeding mechanism 30, so as to facilitate the feeding mechanism 30 to correct the deviation in time to ensure the accurate position of the tape 300. Among them, the structure of the fourth detection mechanism 140 is the same as that of the first detection mechanism 110. Please refer to the description of the first detection mechanism 110 and will not be elaborated here.

[0076] On the other hand, the present application also provides a winding device. The winding device includes a winding needle 200 and a pole piece feeding device 100. The pole piece feeding device 100 is used to convey the tape 300 to the winding needle 200, and the winding needle 200 is used to wind the tape 300 to form an electric core.

[0077] Among them, in this embodiment, the structure of the pole piece feeding device 100 is the same as that of the pole piece feeding device 100 in the above embodiment. Please refer to the description in the above embodiment and will not be elaborated here.

[0078] In summary, those skilled in the art can easily understand that in the embodiment of the present invention, by arranging the inserting mechanism 10 upstream of the cutting mechanism 20 and the feeding mechanism 30 downstream of the cutting mechanism 20. On the one hand, before the cutting mechanism 20 cuts the tape 300, the inserting mechanism 10 clamps the tape 300, which can make the tape 300 in a tensioned state for easy cutting. On the other hand, after the cutting mechanism 20 finishes cutting, the feeding mechanism 30 clamps the leading end of the tape 300 and moves it in the direction close to the winding needle 200. This can not only tension the tape 300, but also because the leading end of the tape 300 is clamped and sent to a position closer to the winding needle 200, so as to ensure that the leading end of the tape 300 can be accurately sent to the winding needle 200, thereby improving the alignment degree of the leading end of the tape 300 and the feeding position of the winding needle 200.

[0079] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A pole piece feeding device, which is used to convey a strip to a winding needle, and is characterized in that, The pole piece feeding device includes a first slide, an inserting mechanism, a cutting mechanism, and a feeding mechanism arranged in sequence along the conveying direction of the strip. The inserting mechanism is arranged on the first slide and is used for clamping the strip. The cutting mechanism is used for cutting the strip. After the strip is cut, the inserting mechanism further conveys the strip in a direction closer to the winding needle or the cutting mechanism moves in a direction away from the winding needle, so that the leading end of the strip is exposed outside the cutting mechanism. The feeding mechanism is used for clamping the leading end of the strip and moving it in a direction closer to the winding needle, so that the leading end of the strip approaches and is fed into the winding needle.

2. The pole piece feeding device according to claim 1, characterized in that, The pole piece feeding device further includes a mounting plate, a first transmission mechanism, a second transmission mechanism, and a third transmission mechanism arranged on the mounting plate, and a first slide rail and a second slide rail arranged in parallel on the mounting plate. The inserting mechanism and the cutting mechanism are slidably supported on the first slide rail and move along the first slide rail respectively under the drive of the first transmission mechanism and the second transmission mechanism. The feeding mechanism is slidably supported on the second slide rail and moves along the second slide rail under the drive of the third transmission mechanism.

3. The pole piece feeding device according to claim 1, characterized in that, The pole piece feeding device further includes a guiding mechanism arranged between the inserting mechanism and the cutting mechanism and / or between the cutting mechanism and the feeding mechanism for guiding the leading end of the strip.

4. The electrode sheet feeding device according to claim 3, characterized in that The guiding mechanism includes a scroll spring and a guiding wire. The scroll spring is arranged on one of the inserting mechanism and the cutting mechanism and / or one of the cutting mechanism and the feeding mechanism. One end of the guiding wire is connected to the scroll spring, and the other end of the guiding wire is connected to the other of the inserting mechanism and the cutting mechanism and / or the other of the cutting mechanism and the feeding mechanism. The scroll spring winds or releases the guiding wire as the distance between the inserting mechanism and the cutting mechanism changes and / or the distance between the cutting mechanism and the feeding mechanism changes. The strip abuts against the guiding wire.

5. The pole piece feeding device according to claim 1, wherein, The pole piece feeding device further includes a deviation rectifying mechanism and a first detection mechanism. The deviation rectifying mechanism is arranged upstream of the inserting mechanism along the conveying direction of the strip and is used for rectifying the strip entering the pole piece feeding device in the width direction of the strip. The first detection mechanism is arranged between the deviation rectifying mechanism and the inserting mechanism and is used for detecting the position of the strip after being rectified by the deviation rectifying mechanism and feeding back the position of the strip to the deviation rectifying mechanism.

6. The pole piece feeding device according to claim 5, characterized in that, The first detection mechanism includes a base, a sliding rod, an adjusting rod, a sensor assembly, a guiding assembly, a first fastener, and a second fastener. The sliding rod is disposed on the base. The sensor assembly and the guiding assembly are slidably supported on the sliding rod. The first fastener is used to connect the sensor assembly to the adjusting rod. The second fastener is used to connect the guiding assembly to the adjusting rod. The adjusting rod is used to adjust the positions of the sensor assembly and / or the guiding assembly connected to the adjusting rod on the sliding rod. The sensor assembly is used to detect the position of the tape. The guiding assembly is correspondingly disposed at the tab position of the tape and is used to guide the tab.

7. The electrode sheet feeding device according to claim 6, wherein, The sensor assembly includes a first connecting portion and a sensor disposed on the first connecting portion. The guiding assembly includes a second connecting portion and a first guiding plate disposed on the second connecting portion. The first connecting portion and the second connecting portion are slidably disposed on the sliding rod. The first detection mechanism further includes an adjusting screw, and the adjusting screw is rotatably disposed on the base. Wherein, the driving end of the adjusting screw is threadedly connected to the first connecting portion, and the adjusting screw is used to adjust the position of the first connecting portion on the sliding rod; or the driving end of the adjusting screw is threadedly connected to the second connecting portion, and the adjusting screw is used to adjust the position of the second connecting portion on the sliding rod.

8. The pole piece feeding device according to claim 1, characterized in that, The pole piece feeding device further includes a second detection mechanism and a third detection mechanism. The second detection mechanism and the third detection mechanism are disposed between the inserting mechanism and the cutting mechanism. The second detection mechanism is used to detect the cutting position of the tape. The third detection mechanism is correspondingly disposed at the tab position of the tape and is used to detect whether the tab has a fold angle.

9. The pole piece feeding device according to claim 8, characterized in that, The third detection mechanism includes a detection bracket and a first sensor and a second sensor disposed on the detection bracket. The tab has a first end connected to the tape and a second end away from the connection between the tab and the tape. The first sensor and the second sensor are spaced apart along the direction of the line connecting the first end and the second end. The first sensor is used to detect the length of the tab at the position corresponding to the first sensor, and the second sensor is used to detect the length of the tab at the position corresponding to the second sensor. Then, according to the ratio of the length of the tab detected by the first sensor and the length of the tab detected by the second sensor, it is determined whether the tab is bent.

10. The pole piece feeding device according to claim 9, characterized in that, The detection bracket includes a first mounting portion, a second mounting portion, and a connecting portion connecting the first mounting portion and the second mounting portion. The first mounting portion and the second mounting portion are arranged in parallel at intervals. Both the first sensor and the second sensor include a transmitting end and a receiving end, and the transmitting end and the receiving end are respectively disposed on the first mounting portion and the second mounting portion.

11. The pole piece feeding device according to claim 1, characterized in that, The feeding mechanism drives the leading end of the strip to approach the winding needle in a linear movement manner, and feeds the leading end of the strip into the winding needle in a rolling manner. The feeding mechanism further corrects the deviation of the leading end of the strip in the width direction of the strip.

12. The pole piece feeding device according to claim 11, wherein, The pole piece feeding device includes a mounting plate, and the feeding mechanism includes: A fixed seat, slidably supported on the mounting plate; A fixed bracket, slidably supported on the fixed seat; A driving roller and a driven roller, rotatably supported on the fixed bracket; A clamping driving member for driving the driving roller and the driven roller to approach each other relatively, so as to clamp the leading end of the strip. The fixed seat moves towards the winding needle under the drive of a third transmission mechanism, so as to drive the leading end of the strip to approach the winding needle in a linear movement manner; A deviation correction driving member for driving the fixed bracket to move relative to the fixed seat, so as to correct the deviation of the leading end of the strip in the width direction of the strip; A feeding driving member for driving the driving roller to drive the driven roller to roll, so as to feed the leading end of the strip into the winding needle in a rolling manner.

13. A winding device, characterized in that, The winding device includes a winding needle and the pole piece feeding device according to any one of claims 1-12. The pole piece feeding device is used for conveying a strip to the winding needle, and the winding needle is used for winding the strip to form an electric core.

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