Winding device for secondary battery electrode preparation process

Abstract

The winding device for the secondary battery electrode preparation process according to the present invention comprises: a turntable including a first winding core and a second winding core for winding a fabric used in the secondary battery electrode preparation process; a support member which is located on the opposite side of the second winding core with the static fabric that stops winding due to the full winding of the first winding core therebetween, and which moves toward the static fabric side and is placed at a working position or moves in the opposite direction from the working position and is placed at a waiting position; a suction roller rotatably coupled to the support member and configured to suck the adhesive tape; and a cutter coupled to the support member so as to be capable of reciprocating in the width direction of the static fabric. When the supporting part is located at the working position, the static fabric is clamped between the adsorption roller and the second winding core, the cutter divides the static fabric into a recycling part and a winding part by cutting the static fabric, the adsorption roller rotates through the second winding core rotating reversely, and the bonding belt is bonded to the end of the winding part and the second winding core.

Description

Technical Field

[0001] The present invention relates to a winding device for a secondary battery electrode preparation process, which can be used in various processes required for preparing secondary battery electrodes. More specifically, it relates to the following winding device for a secondary battery electrode preparation process, that is, when any winding core on which a fabric is first wound is in a fully wound state, the fabric is automatically wound on other empty winding cores. Background Art

[0002] Secondary batteries are rechargeable batteries that can be used as batteries for a variety of devices such as mobile phones, laptops, cameras, and cars. In addition, secondary batteries have a structure in which pre-prepared electrodes (anode, cathode) and separators are alternately stacked, for example, a stacked structure of anode (cathode) / separator / cathode (anode) / separator / anode (cathode).

[0003] Generally, the process for preparing the electrodes (anode and cathode) of the above-mentioned secondary battery includes a coating process, a rolling process, a slitting process, a slotting process and a drying process, and each process is implemented by a roll-to-roll method. Therefore, in each process, an unwinding device and a winding device are used. The unwinding device is used for the fabrics before the unwinding process (the fabrics for coating, the fabrics for rolling, the fabrics for slitting, the fabrics for slotting, and the fabrics for drying), and the winding device is used for the fabrics after the winding process. Moreover, in the winding device of each process, when any winding core that first winds the fabric is in a fully wound state, it is necessary to execute the process of winding the fabric on other empty winding cores.

[0004] Prior art literature Patent Literature Patent Document 0001: Korean Patent Publication No. 10-2215456 (Automatic Film Winding Device) Patent Document 0002: Korean Patent Publication No. 10-1960629 (Automatic Film Winding Device) Patent Document 0003: Korean Patent Publication No. 10-1752731 (Automatic cutting and winding method of an optical film wound on a winding core) Patent document 0004: Korean Patent Publication No. 10-1774445 (Automatic cutting and winding device for an optical film wound on a winding core). Summary of the invention

[0005] Therefore, an object of the present invention is to provide a technology that can automatically perform the above-mentioned operations required for a winding device used in a secondary battery electrode (anode, cathode) production process.

[0006] The winding device for the secondary battery electrode preparation process provided by the present invention comprises: a turntable, a supporting component, an adsorption roller and a cutter, wherein the turntable comprises: a first winding core and a second winding core, which are used to wind the fabric used in the secondary battery electrode preparation process; the supporting component is located on the opposite side of the second winding core across the stationary fabric that stops winding due to the full winding of the first winding core, moves toward the stationary fabric side and is placed in a working position or moves from the working position in the opposite direction and is placed in a waiting position; the adsorption roller is combined with the supporting component in a rotatable manner and is used to adsorb the adhesive tape; the cutter is combined with the supporting component so as to be able to reciprocate along the width direction of the stationary fabric. When the supporting component is located at the working position, the stationary fabric is sandwiched between the adsorption roller and the second winding core, and the cutter divides the stationary fabric into a recovery portion wound on the first winding core and a winding portion wound on the second winding core by cutting the stationary fabric sandwiched between the adsorption roller and the second winding core. The adsorption roller is rotated by the counter-rotating second winding core to bond the adhesive tape to the end of the winding portion and the second winding core.

[0007] The support member may be combined with an adsorption plate and another cutter, the adsorption plate and the cutter are arranged adjacent to each other, and the other cutter is located on the opposite side of the cutter across the adsorption plate. In this case, when the support member is located at the working position, the adsorption plate adsorbs the stationary fabric, and the other cutter and the cutter cut the stationary fabric together to separate the sample portion adsorbed on the adsorption plate from the recovery portion.

[0008] The adsorption plate is combined with the supporting component so as to be able to reciprocate along the width direction of the stationary fabric.

[0009] The winding device for the secondary battery electrode preparation process may further include an automatic adhesive tape supply device. In this case, the automatic adhesive tape supply device automatically performs a process of forming the adhesive tape fabric wound on the adhesive tape fabric roll located on one side of the length direction (width direction of the stationary fabric) of the adsorption roller into the adhesive tape and placing the adhesive tape in the adsorption area of ​​the adsorption roller in a manner such that the adhesive surface of the adhesive tape faces outward. Effects of the Invention

[0010] According to the present invention, the winding device for secondary battery electrode preparation process can automatically perform the work of bonding the fabric wound on the full winding core to the empty winding core using the adhesive tape having only one side as the adhesive surface.

[0011] Furthermore, according to the present invention, there is an effect that the fabric sample that has passed the secondary battery electrode preparation process can be automatically recovered.

[0012] Furthermore, according to the present invention, there is an effect that the adhesive tape can be automatically adsorbed to the adsorption area of ​​the adsorption roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is described in detail below with reference to the accompanying drawings.

[0014] Figure 1 It is a diagram showing a winding device for use in a secondary battery electrode production process of the present invention.

[0015] Figure 2 For illustration Figure 1 The diagram shows the working process of the winding device.

[0016] Figures 3 to 6 To show the automatic supply device of adhesive tape automatically supplies the adhesive tape through the suction roller Figure 1 Diagram of the working process of the adhesive tape.

[0017] Explanation of symbols: 10: fabric, 12: winding part, 14: recovery part, 14a: remaining part of the recovery part, 14b: sample part of the recovery part, 40: adhesive tape, 42: adhesive tape fabric, 100: Winding device for secondary battery electrode preparation process, 200: Turntable 210: First winding core, 220: Second winding core, 300: Support component, 312: Cylinder 314: Linear guide, 320: Adsorption roller, 330: Cutter, 340: adsorption plate, 350: another cutter, 400: adhesive tape automatic feeding device, 410: adhesive tape material roller, 420: feeding roller, 430: guide rail, 440: reciprocating roller, 450: cutter, 460: adsorption table. DETAILED DESCRIPTION

[0018] Hereinafter, a preferred embodiment of the winding device for the secondary battery electrode preparation process of the present invention will be described in detail with reference to the accompanying drawings. The terms or words used below should not be limited to the usual meaning or dictionary meaning, and should be interpreted in accordance with the meaning and concept that conforms to the technical idea of ​​the present invention based on the principle that the inventor can appropriately define the concept of terms in order to explain his method in the best way.

[0019] The winding device 100 for the secondary battery electrode preparation process of the present invention is arranged at the end (at the end) of the secondary battery electrode preparation process line (coating process line, rolling process line, slitting process line, slotting process line, etc.) Figure 1In the case of, it is arranged at the front end), for winding the fabric 10 used in the corresponding process, including a turntable 200, a supporting component 300, an adsorption roller 320, a cutter 330, an adsorption plate 340 and another cutter 350.

[0020] like Figure 1 As shown, the turntable 200 is provided with a first winding core 210 and a second winding core 220, which are spaced 180 degrees apart and can be independently rotated around the rotating shafts 212 and 222 by a motor (not shown). Moreover, the turntable 200 can be rotated by itself around the central axis 202 by a motor (not shown), and as such rotation is achieved, the positions of the two winding cores 210 and 220 are changed. In addition, the turntable 200 is also provided with a guide roller 230.

[0021] Typically, the fabric 10 used in the secondary battery electrode manufacturing process is wound on the first winding core 210 and moves from the rear to the front. Figure 1 The first winding core 210 is located at the nine o'clock direction, and the second winding core 220 is located at the three o'clock direction (not shown). Next, if the first winding core 210 is in a fully wound state, the turntable 200 rotates counterclockwise around the central axis 202. Figure 1 As shown, the first winding core 210 is located at the three o'clock direction, and the second winding core 220 is located at the nine o'clock direction. Afterwards, as the first winding core 210 stops winding (rotating), the fabric 10 is in a stationary state.

[0022] like Figure 1 As shown, the support member 300 is located on the opposite side of the second winding core 220 across the stationary fabric 10. In addition, the support member 300 is formed with a left end slidably coupled to a pair of linear guides 314 and a right end slidably coupled to a pair of linear guides (not shown), which are coupled to the cylinder rod of the cylinder 312. The linear guides 314 and the cylinder 312 are fixed to a frame (not shown) constituting the overall structure of the winding device 100.

[0023] When the air cylinder 312 is working, the supporting member 300 moves toward the stationary fabric 10 and is placed at the working position, or moves from the working position to the opposite direction (away from the stationary fabric) and is placed at the waiting position. Figure 1 FIG. 3 shows a state where the support member 300 is placed in a waiting position. Figure 1 In the embodiment, although the support member 300 moves back and forth between the waiting position and the working position by linear reciprocating motion, the support member 300 may also move back and forth between the waiting position and the working position by pendulum motion (not shown).

[0024] The suction roller 320 is combined with the supporting member 310 to be rotatable around a rotation axis extending in the left-right direction (the width direction of the fabric), and the suction roller 320 can suction the adhesive tape 40 so that the adhesive surface thereof faces outward. Figure 1 The adhesive tape 40 is shown in a state of being adsorbed in the twelve o'clock direction.

[0025] The cutter 330 is fixed to the left-right moving block 332, and the other cutter 350 is also fixed to the left-right moving block 352. Moreover, the left-right moving blocks 332 and 352 are combined with the support member 300 so as to be able to reciprocate in the left-right direction from positions away from each other, and when a predetermined driving device (cylinder, motor, etc.) fixed to the support member 300 is operated, they move to the left or right at the same time.

[0026] One side of the suction plate 340 is used as a suction surface. The suction plate 340 is located between the cutter 330 and the other cutter 350 to be adjacent to the cutter 330 and the other cutter 350 and is combined with the support member 300 to reciprocate in the left-right direction.

[0027] As described above, when the winding device 100 is in Figure 1 In the state shown, that is, the first winding core 210 located at the three o'clock direction stops winding the fabric 10 due to full roll, and the second winding core 220 works in the state located at the nine o'clock direction. Figure 2 Explain the above process.

[0028] First, after the support component 300 located at the waiting position moves to the working position, as the adsorption roller 320 pushes the stationary fabric 10 to contact the first winding core 220, the cutter 330 and the other cutter 350 located at the left end (or right end) of the support component 300 move to the left side (or right side) of the stationary fabric 10 without being interfered by the stationary fabric 10, and the adsorption surface of the adsorption plate 340 contacts the stationary fabric 10 and applies adsorption force.

[0029] Therefore, if Figure 2 As shown in part (a), when the supporting component 300 is located in the working position, the stationary fabric 10 is clamped between the adsorption roller 320 and the first winding core 220. In this clamping state, as the stationary fabric 10 is adsorbed by the adsorption plate 340, the cutter 330 and the other cutter 350 are located on the left side (or right side).

[0030] If the support member 300 moves to the working position, the cutter 330 moves to the right (or left), and then, as shown in FIG. Figure 2As shown in part (b), the stationary fabric 10 sandwiched between the adsorption roller 320 and the first winding core 220 is divided into a recovery portion 14 wound on the first winding core 210 and a winding portion 12 wound on the second winding core 220, and the recovery portion 14 is divided into a sample portion 14b adsorbed on the adsorption plate 340 and a remaining portion 14a.

[0031] like Figure 2 As shown in part (b) of FIG. 1 , after the cutter 330 has moved rightward (or leftward), the first winding core 210 rotates in the reverse direction (rotates in the direction opposite to the fabric winding direction), thereby causing the suction roller 320 to rotate in the direction opposite to the first winding core 210. Furthermore, when the adhesive surface of the adhesive tape 40 is bonded to the end (front end) of the winding portion 12, the rotating suction roller 320 releases the suction force and continues to rotate, thereby, as if Figure 2 In the enlarged view shown in part (b) of FIG. 1 , the adhesive tape 40 is bonded to the end (front end) of the winding portion 12 and the first winding core 220 .

[0032] As such, if the end (front end) of the winding portion 12 is bonded to the first winding core 220, the support member 300 returns to the waiting position, and the second winding core 210 winds up the remaining portion 14a of the recovery portion 14, as shown in FIG. Figure 2 As shown in part (c) of FIG. 1 , the first winding core 220 is wound on the winding portion 12 by forward rotation. Furthermore, when the support member 300 is restored to the waiting position, as the adsorption plate 340 moves to the left (or right), the sample portion 14b of the recovery portion 140 is drawn out to the outside to release the adsorption force, and in this case, the staff can easily recover the sample portion 14b.

[0033] In the above description, although the winding device 100 is provided with the adsorption plate 340 and the other cutter 350 , the adsorption plate 340 and the other cutter 350 may not be provided when there is no need to recover the sample portion 14 b .

[0034] On the other hand, as described above, although the adhesive tape 40 is adsorbed by the adsorption roller 320, the winding device of the present invention may further include an adhesive tape automatic supply device 400 for automatically adsorbing the adhesive tape 40 to the adsorption roller 320. Figures 3 to 6 The above-mentioned adhesive tape automatic supply device 400 will be described.

[0035] The automatic adhesive tape supply device 400 is disposed on a frame (not shown) constituting the overall structure of the winding device 100 without interfering with the movement of the supporting member 310. In addition, the automatic adhesive tape supply device 400 may include an adhesive tape material roller 410, a feeding roller 420, an adsorption table 460, a reciprocating roller 440, and a cutter 450.

[0036] The adhesive tape surface roller 410 is located on one side of the adsorption roller 320 in the left and right direction (in Figures 3 to 6 The sub-roller (located on the left side) is wound with an adhesive tape fabric 42 that becomes the adhesive tape 40. The adhesive tape fabric roll 410 is rotatably supported on the frame (not shown).

[0037] The above-mentioned adsorption platform 460 is fixedly supported on the above-mentioned frame (not shown) so as to be located between the adhesive tape fabric roll 410 and the adsorption roll 320. Figures 3 to 6 The upper surface is used as an adsorption surface, and a cutting groove 462 extending forward and backward is provided at the center of the adsorption surface. Moreover, the adsorption surface of the adsorption platform 460 does not form a height difference relative to the outer surface of the adsorption roller 320.

[0038] The feed roller 420 is located between the adhesive tape fabric roller 410 and the adsorption platform 460, and is rotated by a motor (not shown) and supported on the frame (not shown) in a rotatable manner. When the feed roller 420 rotates, the adhesive tape fabric 42 wound on the adhesive tape fabric roller 410 can be pulled and supplied to the adsorption platform 460. As such a feed roller 450, an adsorption roller can be used. On the other hand, the adhesive tape fabric 42 supplied by the feed roller 420 will form a bonding surface facing the outside of the adsorption roller 320 (at Figures 3 to 6 In the middle, it refers to the upward) posture.

[0039] When the motor (not shown) is operated, the reciprocating roller 440 is combined with the guide rail 430 to be able to move left and right between the initial position and the final position. In addition, the guide rail 430 is fixed to the frame (not shown) and extends from the upper side of the adsorption roller 320 in the left and right direction. The component recorded as reference numeral 440a is a cylinder for moving the reciprocating roller 440 up and down.

[0040] The reciprocating roller 440 located at the above-mentioned initial position contacts the left side portion of the adsorption surface located on the left side of the cutting groove 462 (referring to the adsorption surface of the adsorption platform 460), and then, as it moves to the right, it contacts the right side portion of the adsorption surface located on the right side of the cutting groove 462 and the surface of the adsorption roller 320 in turn, and then, it separates from the adsorption roller 320 and moves to the right to the above-mentioned final position.

[0041] When the brake (not shown) is in operation, the reciprocating roller 440 cannot rotate, but can rotate when the brake is not in operation. As such a brake, an air cylinder (not shown) that moves together with the reciprocating roller 440 and a brake (not shown) that applies pressure to the surface of the reciprocating roller 440 or does not apply pressure to the surface of the reciprocating roller 440 using the air cylinder (not shown) can be used.

[0042] The cutter 450 is combined with the guide rail 430. Moreover, the cutter 450 can be moved up and down by the air cylinder 452 while entering and exiting the cutting groove 462 of the adsorption platform 460. The air cylinder 452 is combined with the guide rail 430 so as to be able to perform linear reciprocating motion through a motor or the like.

[0043] The working process of the above-mentioned adhesive tape automatic supply device 400 is as follows.

[0044] like Figure 3 As shown, first, the end of the adhesive tape fabric 42 wound on the adhesive tape fabric roller 410 is adsorbed on the left side of the adsorption surface of the adsorption platform 460, and the reciprocating roller 440 is placed in the initial position and adhered to the adhesive surface of the end of the above-mentioned adhesive tape fabric 42.

[0045] Next, the reciprocating roller 440 is in a state of being moved by performing a first movement (to the right) of a preset degree. Figure 4 When the first movement is performed, the adsorption force of the adsorption platform 460 is continuously maintained, and the reciprocating roller 440 cannot rotate due to the operation of the brake, such as Figure 4 As shown, the end of the adhesive tape fabric 42 bonded to the reciprocating roller 440 will be located in the adsorption area of ​​the adsorption roller 320 as it is pulled by the reciprocating roller 440. The adsorption area of ​​the adsorption roller 320 refers to the area where the suction holes 322 are located.

[0046] Furthermore, when performing the first movement, the feed roller 420 supplies the adhesive tape fabric 42 to the right side by rotating. In this case, the rotation speed of the feed roller 420 can be controlled to make the supply speed of the adhesive tape fabric 42 and the movement (to the right) speed of the reciprocating roller 440 become the same. The purpose is to effectively prevent the reciprocating roller 440 from being unable to pull the end of the adhesive tape fabric 42 and move (to the right) by itself.

[0047] As such, after performing the first movement, the feed roller 420 stops working, and as the adsorption platform 460 continues to maintain adsorption, the adsorption roller 320 also starts to perform adsorption. Figure 4 As shown, the adhesive tape material 42 is cut into adhesive tapes 40 by the cutter 450 on the adsorption stage 460. During the first movement, the adsorption of the adsorption roller 320 may also be started.

[0048] If the adhesive tape 40 is formed through the above process, the reciprocating roller 440 is in a state of being moved by performing a second movement (to the right) of a preset degree. Figure 5When the second movement is performed, the feed roller 420 is continuously stopped, the cut end of the adhesive tape fabric 42 is continuously adsorbed by the adsorption platform 460 due to the adsorption force of the adsorption platform 460, the reciprocating roller 440 cannot be continuously rotated due to the operation of the brake, and the end (right end) of the adhesive tape 40 adhering to the reciprocating roller 440 moves to the right due to the pulling of the reciprocating roller 440. In this way, after the second movement is performed, both ends (left and right ends) of the adhesive tape 40 are located in the adsorption area of ​​the adsorption roller 320.

[0049] Even if the second movement is achieved, the reciprocating roller 440 will not stop but continue to move to the right and break away from the adsorption roller 320. Figure 6 As shown, if the final position is reached, the rightward movement stops. Moreover, after the second movement is completed, if the brake is immediately released, the reciprocating roller 440 starts to rotate and move to the right until it is separated from the adsorption roller 320. After the second movement, if the reciprocating roller 440 cannot rotate, the adhesive tape 40 is continuously pulled by the reciprocating roller 440 and separates from the adsorption area of ​​the adsorption roller 320. On the contrary, after the second movement is completed, if the brake is immediately released so that the reciprocating roller 440 is in a rotatable state, the reciprocating roller 440 starts to separate from the adhesive tape 40 adsorbed on the adsorption area of ​​the adsorption roller 320 and moves to the right.

[0050] After being raised by the cylinder 440a, the reciprocating roller 440 in the final position moves (to the left) to the vertically upper side of the initial position and waits. Furthermore, after being used for connection between the winding part 12 and the second winding core 220, the adhesive tape 40 of the suction roller 320 descends to the initial position, thereby being in the same position again. Figure 3 Status shown.

[0051] Although the present invention has been described above by limiting the embodiments and drawings, the present invention is not limited thereto. A person skilled in the art of the present invention may make various modifications and variations within the scope equivalent to the technical concept of the present invention and the scope of protection claimed for the invention described below. Of course, the above embodiments may be combined in various ways.

Claims

1. A winding device for a secondary battery electrode preparation process, characterized in that: include: Turntable, support components, suction rollers and cutters; The turntable includes: a first winding core and a second winding core for winding the fabric used in the secondary battery electrode preparation process; The supporting member is located on the opposite side of the second winding core across the stationary fabric that stops winding due to the full winding of the first winding core, and moves toward the stationary fabric side and is placed in the working position or moves in the opposite direction from the working position and is placed in the waiting position; The adsorption roller is rotatably combined with the supporting member and is used to adsorb the adhesive tape; The cutter is combined with the supporting member so as to be able to reciprocate along the width direction of the stationary fabric. When the supporting component is located at the working position, the stationary fabric is sandwiched between the adsorption roller and the second winding core, and the cutter divides the stationary fabric into a recovery portion wound on the first winding core and a winding portion wound on the second winding core by cutting the stationary fabric sandwiched between the adsorption roller and the second winding core. The adsorption roller is rotated by the counter-rotating second winding core to bond the adhesive tape to the end of the winding portion and the second winding core.

2. The winding device for secondary battery electrode preparation process according to claim 1, characterized in that: The support member is combined with the adsorption plate and another cutter, the adsorption plate is arranged adjacent to the cutter, and the other cutter is located on the opposite side of the cutter across the adsorption plate. When the supporting component is located at the working position, the adsorption plate adsorbs the stationary fabric, and the other cutter and the cutter cut the stationary fabric together to separate the sample portion adsorbed on the adsorption plate from the recovery portion.

3. The winding device for secondary battery electrode preparation process according to claim 2, characterized in that: The adsorption plate is combined with the supporting component so as to be able to reciprocate along the width direction of the stationary fabric.

4. The winding device for secondary battery electrode preparation process according to claim 1, characterized in that: It also includes an automatic adhesive tape supply device, which can automatically execute the process of forming the adhesive tape fabric of the adhesive tape fabric roller wound on one side of the length direction of the above-mentioned adsorption roller into the above-mentioned adhesive tape, and setting the above-mentioned adhesive tape in the adsorption area of ​​the above-mentioned adsorption roller in a manner that the adhesive surface of the above-mentioned adhesive tape faces outward, and the above-mentioned length direction is the width direction of the stationary fabric.

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