Glue preparation roller capable of adjusting vacuum range

Abstract

The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a glue preparation roller capable of adjusting a vacuum range, which comprises a glue preparation roller, a piston component, an opening mechanism and a closing mechanism, a front end cover and a rear end cover are respectively fixed at two ends of the glue preparation roller through bolts, and a plurality of rows of adsorption holes are arranged on the circumference of the surface of the glue preparation roller. Vacuum air guide holes are formed in the side portion of the glue preparing roller, each row of adsorption holes are communicated with one vacuum air guide hole, a cavity is formed in the glue preparing roller, the inner side of the first adsorption hole of each row of adsorption holes penetrates into the cavity and is communicated with the cavity, the outer portion of the first adsorption hole is sealed, and the inner side of the second adsorption hole is communicated with the cavity. The piston assembly is installed in a piston hole in the front end cover, and the piston assembly is pushed by the opening mechanism and the closing mechanism so as to control opening and closing of the first adsorption hole. The adsorption holes of the glue preparation roller can be automatically controlled along with the length of the adhesive tape, and the inapplicable adsorption holes do not need to be attached manually when the length of the adhesive tape is changed.

Description

Technical Field

[0001] This utility model belongs to the field of lithium-ion battery technology, and specifically relates to a rubber preparation roller with an adjustable vacuum range. Background Technology

[0002] In the winding process of power batteries, at the end of the winding, terminating tape is needed to attach the end of the separator to the electrode assembly. Different battery models, or different processes for the same battery, require different lengths of terminating tape. The tape preparation roller is generally designed according to the requirement of the longest tape. For example, Chinese patent discloses a tape application roller for a lithium-ion battery winding machine, application number: CN201821528491.7, which includes a roller body, a first sealing plate and a second sealing plate. The roller body is a hollow cylinder with a polyurethane coating on its outer surface. At least two tape preparation areas are provided on the outer periphery of the roller body. The tape preparation areas are arranged circumferentially around the central axis of the roller body. Each tape preparation area has multiple vacuum adsorption holes arranged at equal intervals in the longitudinal and transverse directions. The first sealing plate and the second sealing plate are respectively installed on the left and right ends of the roller body. The negative pressure draws the required length of tape onto the surface of the preparation roller through the vacuum suction hole, and then moves it to the electrode assembly on the winding needle. By pressing the adhesive side of the tape onto the electrode assembly and rotating synchronously with the electrode assembly on the winding needle, the tape is adhered to the electrode assembly.

[0003] Currently, the preparation roller is designed for the longest tape. When the tape is shorter than the longest tape, some negative pressure suction holes will not be covered by the tape, resulting in low vacuum. This leads to the following problems: First, the equipment judges whether the tape is ready based on the vacuum level. A high vacuum level indicates that the negative pressure suction holes are covered by the tape, meaning the tape is ready. A low vacuum level indicates that the tape may not be adhered to the preparation roller, resulting in preparation failure. When the tape is short and some negative pressure holes are not covered, the preparation status cannot be judged by the vacuum level, or an alarm will sound every time indicating preparation failure. Low negative pressure also causes the tape to not adhere firmly. The current solution is to pre-seal unused vacuum suction holes with tape according to the required tape length during changeover, leaving only the necessary suction holes open. This method has the following disadvantages: 1) Changeover is cumbersome, requiring confirmation of the tape position and manual sealing of unnecessary holes; 2) Each preparation requires rotating to the predetermined tape position, wasting preparation time. Utility Model Content

[0004] The purpose of this invention is to provide a rubber preparation roller with an adjustable vacuum range, thereby solving the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a glue preparation roller with adjustable vacuum range, comprising a glue preparation roller, with a front end cap and a rear end cap fixed to both ends of the glue preparation roller by bolts, and multiple rows of adsorption holes arranged around the surface of the glue preparation roller, and further comprising a piston assembly, an opening mechanism and a closing mechanism, with a vacuum vent hole provided on the side of the glue preparation roller, each row of adsorption holes communicating with a vacuum vent hole, the glue preparation roller having an internal cavity, the inner side of the first adsorption hole in each row of adsorption holes penetrating into and communicating with the cavity, the outer side of the first adsorption hole being sealed, the piston assembly being installed in a piston hole on the front end cap, and the piston assembly being pushed by the opening mechanism and the closing mechanism to control the opening and closing of the first adsorption hole.

[0006] Preferably, the front end cover has an air guide hole at a position corresponding to the vacuum air guide hole of the preparation roller, the side of the air guide hole has a keyway, the outer side of the front end cover has a bushing with a keyway, a synchronous pulley is installed on the bushing, the synchronous pulley is connected to the rubber roller motor through a synchronous belt, and the rubber roller motor drives the preparation roller to rotate.

[0007] Preferably, the piston assembly includes a piston, a directional shaft, and a pusher block. The directional shaft is fixed to the piston and slides in cooperation with the keyway in the front end cover. The piston is located in the vacuum vent and the vent hole and slides in cooperation with both. The front end of the piston cooperates with the first adsorption hole, and the rear end of the piston is fixed to the pusher block.

[0008] Preferably, the four corners of the push block are chamfered.

[0009] Preferably, the opening mechanism includes an opening cam follower and an opening cylinder. The opening cam follower is mounted on the piston rod of the opening cylinder, which is mounted on the frame. The opening cam follower is located on one side of the push block and controls the piston to move away from the first adsorption hole, opening the vacuum channel of the adsorption hole. The closing mechanism includes a closing cam follower and a closing cylinder. The closing cam follower is mounted on the piston rod of the closing cylinder, which is mounted on the other side of the frame. The closing cam follower is located on the other side of the push block and controls the piston to move beyond the first adsorption hole, closing the vacuum channel of the adsorption hole.

[0010] Preferably, the front end cover and the rear end cover are mounted on a central shaft, which is mounted on the frame.

[0011] Preferably, brackets are installed at both ends of the central shaft, and the brackets are connected to the central shaft through bearings. One side of one of the brackets has a connecting sleeve, and a synchronous pulley is installed on the connecting sleeve. The synchronous pulley is connected to the pressure rod motor through a synchronous belt. A pressure rod cylinder is installed on the bracket, and a pressure rod is installed on the piston rod of the pressure rod cylinder.

[0012] Preferably, one side of the central shaft is provided with a first through hole and a second through hole, the first through hole being connected to a vacuum tube and the second through hole being connected to a cavity.

[0013] Preferably, the inner sides of the front end cover and the rear end cover are respectively provided with bosses, and the bosses cooperate with the cavity of the rubber preparation roller.

[0014] Preferably, the rubber roller motor and the pressure rod motor are fixed on the frame.

[0015] The beneficial effects of this invention are as follows: When preparing adhesive, the piston assembly rotates on the adhesive preparation roller along with the adhesive tape. An opening mechanism controls the piston assembly to open the suction holes covered by the adhesive tape in real time. During adhesive application, the assembly is applied to the electrode assembly along with the adhesive tape, and a closing mechanism controls the piston assembly to close the suction holes in real time. The suction holes on the adhesive preparation roller can be automatically controlled according to the application length, eliminating the need to manually cover unsuitable suction holes when changing the tape length. The suction holes open and close in real time according to the position of the adhesive tape on the adhesive preparation roller, reducing vacuum leakage and enabling more accurate identification of poor adhesive preparation. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is the left view of the utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is a top view of the present invention;

[0020] Figure 5 This is a perspective view of the rubber roller in this utility model;

[0021] Figure 6a This is a perspective view of the front end cover in this utility model;

[0022] Figure 6b This is a perspective view of the front end cover of this utility model from another direction;

[0023] Figure 7 This is a partial schematic diagram of the piston assembly in this utility model;

[0024] Figure 8 This is a perspective view of the piston assembly in this utility model;

[0025] Figure 9 and Figure 10 This is a diagram showing the state of the adhesive being prepared at the beginning of the process.

[0026] Figure 11 This is a diagram showing the state of the present invention after the adhesive has been prepared and the adhesive has been applied.

[0027] Explanation of reference numerals in the attached drawings: 1. Preparing roller; 11. Vacuum vent; 12. Adsorption hole; 121. First adsorption hole; 13. Cavity; 14. Belt; 2. Front end cover; 21. Keyway; 22. Vent hole; 23. Bushing; 24. Boss; 3. Rear end cover; 4. Piston assembly; 41. Piston; 42. Orienting shaft; 43. Push block; 431. Chamfer; 5. Opening mechanism; 51. Opening cam follower; 52. Opening cylinder; 6. Closing mechanism; 61. Closing cam follower; 62. Closing cylinder; 7. Belt pressure rod; 71. Bracket; 72. Synchronous pulley; 73. Pressure rod cylinder; 8. Roller motor; 9. Pressure rod motor; 10. Central shaft; 101. First through hole; 102. Second through hole. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixed connection," and "fixed connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0032] like Figures 1-4As shown, an adjustable vacuum range preparation roller includes a preparation roller 1, a front cover 2, a rear cover 3, a piston assembly 4, an opening mechanism 5, a closing mechanism 6, a tape pressure rod 7, a roller motor 8, a pressure rod motor 9, and a central shaft 10. The front cover 2 and the rear cover 3 are bolted to both sides of the preparation roller 1. The piston assembly 4 is installed in the piston hole 22 of the front cover and can be pushed by the opening mechanism 5 and the closing mechanism 6. The tape pressure rod 7 presses the tape onto the roller 1 via a cylinder 73. The roller motor 8 drives the roller to rotate via a synchronous belt, and the pressure rod motor 9 drives the pressure rod 7 to rotate via a synchronous belt. Both the roller 1 and the pressure rod 7 are fixed to the central shaft 10 by bearings and can rotate along the central shaft 10.

[0033] like Figure 5 As shown, the preparation roller 1 has vacuum vent holes 11 on its side, and numerous rows of adsorption holes 12 around its surface. Each row of adsorption holes 12 communicates with a vacuum vent hole 11, and the depth of the vacuum vent hole 11 exceeds the length of a row of adsorption holes 12. The vacuum vent hole 11 is not a through hole. The number of vacuum vent holes 11 and adsorption holes 12 is set according to the diameter of the preparation roller. The preparation roller has a cavity 13 inside. The first hole 121 of each row of adsorption holes penetrates into the cavity 13, and the size of the first adsorption hole 121 is larger than the other holes. The other holes only penetrate to the vacuum vent hole 11. The outside of the first adsorption hole 121 of each row of adsorption holes is sealed with tape 14 or other means.

[0034] like Figure 6a and Figure 6b As shown, the front cover 2 has an air guide hole 22 in the circumferential direction, corresponding to the vacuum air guide hole of the preparation roller 1. The air guide hole 22 has a keyway 21 on its side. The front cover has a bushing 23 with a keyway on its outside. The bushing 23 is equipped with a synchronous pulley and is connected to the rubber roller motor 8 through a synchronous belt. The inner side has a boss 24 that cooperates with the cavity 13 of the preparation roller. The rubber roller motor drives the rubber roller 1 to rotate.

[0035] like Figure 7 and Figure 8As shown, the piston assembly 4 includes a piston 41, a directional shaft 42, and a push block 43. The four corners of the push block 43 are chamfered at 431. The directional shaft 42 is located in the keyway 21 of the front cover 2 to prevent the piston assembly from rotating. The opening mechanism 5 includes an opening cam follower 51 and an opening cylinder 52. The opening cylinder 52 can push the opening cam follower 51 to move back and forth. When the opening cylinder 52 moves backward, the opening cam follower 51 can drive the piston assembly 4 to move backward through the chamfer 431 of the push block 43 when the rubber preparation roller 1 rotates, so that the piston leaves the first suction hole 121 and opens the vacuum channel of the suction hole. The closing mechanism 6 includes a closing cam follower 61 and a closing cylinder 62. The closing cylinder 62 can push the closing cam follower 61 to move back and forth. When the closing cylinder 62 moves forward, the closing cam follower 61 can push the piston assembly 4 forward, and the piston passes the first suction hole 121, closing the vacuum channel of the suction hole.

[0036] like Figure 4 As shown, the tape pressure bar 7 includes two brackets 71, two pressure bar cylinders 73, and a synchronous pulley 72. The brackets 71 have protruding connecting sleeves 711, which are connected to the synchronous pulleys 72. The pressure bar motor 9 drives the pressure bar 7 to rotate through the synchronous belt. The extension and retraction of the pressure bar cylinders 73 can drive the pressure bar 7 to move, thereby pressing the tape or opening it.

[0037] like Figure 3 As shown, the rubber preparation roller 1 and the tape pressure bar 7 are both mounted on the central shaft 10 and can rotate along the central shaft. The central shaft 10 has a first through hole 101 and a second through hole 102 on one side. The first through hole 101 and the second through hole 102 are connected. The vacuum tube is connected to the cavity 13 of the rubber preparation roller 1 through the first through hole 101 and the second through hole 102.

[0038] like Figure 9 , Figure 10 When the adhesive preparation begins, the tape pressure bar 7 returns to the upper position, the cylinder 52 of the opening mechanism 5 retracts, and the cam follower 51 drives the contacting piston assembly 4 to move outward, opening the channel of the suction hole 121. The corresponding suction hole 13 will have vacuum suction, and the tape goes deep under the pressure bar 7. The pressure bar 7 presses down to tighten the tape. The adhesive preparation roller 1 and the pressure bar 7 rotate synchronously. During the rotation, the piston assembly 4 is opened after contacting the cam follower 51, and the tape in contact with the adhesive preparation roller is sucked by the suction hole 13.

[0039] like Figure 11When the adhesive is prepared and the application begins, the tape pressure bar 7 returns to its initial position, the adhesive preparation roller is applied to the electrode assembly, the closing mechanism 6 opens, and the cam follower 61 drives the piston assembly 41 to move inward, closing the channel of the adsorption hole 121. The corresponding adsorption hole 12 will also cut off the vacuum. The adhesive preparation roller 1 and the electrode assembly rotate simultaneously, and the tape is applied to the electrode assembly. At the same time, as the adhesive preparation roller 1 rotates, the cam follower 61 also pushes the piston assembly, which has already rotated past the application position, inward, closing the corresponding adsorption hole 12.

[0040] For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An adjustable vacuum range applicator roll, comprising an applicator roll, a front end cover and a rear end cover are fixed on both ends of the applicator roll by bolts respectively, and a plurality of rows of adsorption holes are arranged around the surface of the applicator roll, characterized in that: The glue roller is provided with a vacuum air guide hole on the side thereof, each row of suction holes is communicated with the vacuum air guide hole, the inside of the glue roller is provided with a cavity, the inside of the first suction hole of each row of suction holes penetrates into the cavity and is communicated with the cavity, the outside of the first suction hole is sealed, the piston assembly is installed in the piston hole of the front end cover, and the piston assembly is pushed by the opening mechanism and the closing mechanism to control the opening and closing of the first suction hole.

2. The adjustable vacuum range size conditioner roll of claim 1, wherein: The front end cover is provided with a guide hole at the position corresponding to the vacuum air guide hole of the glue roller, the side of the guide hole is provided with a key groove, the outside of the front end cover is provided with a shaft sleeve provided with a key groove, a synchronous wheel is installed on the shaft sleeve, the synchronous wheel is connected with the glue roller motor through a synchronous belt, and the glue roller motor drives the glue roller to rotate.

3. The adjustable vacuum range size conditioner roll of claim 2, wherein: The piston assembly comprises a piston, a directional shaft and a push block, the directional shaft is fixed on the piston and is slidably matched with the key groove in the front end cover, the piston is located in the vacuum air guide hole and the guide hole and is slidably matched with the vacuum air guide hole and the guide hole, the front end of the piston is matched with the first suction hole, and the rear end of the piston is fixed with the push block.

4. The adjustable vacuum range size conditioner roll of claim 3, wherein: The four corners of the push block are inverted bevels.

5. The adjustable vacuum range size conditioner roll of claim 3, wherein: The opening mechanism comprises an opening cam follower and an opening cylinder, the opening cam follower is installed on the piston rod of the opening cylinder, the opening cylinder is installed on the rack, the opening cam follower is located on one side of the push block, the piston is controlled to be away from the first suction hole, and the vacuum passage of the suction hole is opened; the closing mechanism comprises a closing cam follower and a closing cylinder, the closing cam follower is installed on the piston rod of the closing cylinder, the closing cylinder is installed on the other side of the rack, the closing cam follower is located on the other side of the push block, the piston is controlled to exceed the first suction hole, and the vacuum passage of the suction hole is closed.

6. The adjustable vacuum range size conditioner roll of claim 5, wherein: The front end cover and the rear end cover are installed on the central shaft, and the central shaft is installed on the rack.

7. The adjustable vacuum range size conditioner roll of claim 6, wherein: The two ends of the central shaft are respectively provided with supports, the supports are connected with the central shaft through bearings, one side of one of the supports is provided with a connecting sleeve, a synchronous pulley is installed on the connecting sleeve, the synchronous pulley is connected with the pressing rod motor through a synchronous belt, a pressing rod cylinder is installed on the support, and a pressing rod is installed on the piston rod of the pressing rod cylinder.

8. The adjustable vacuum range size conditioner roll of claim 6, wherein: One side of the central shaft is provided with a first through hole and a second through hole which are communicated, the first through hole is connected with a vacuum pipe, and the second through hole is communicated with the cavity.

9. The adjustable vacuum range size conditioner roll of claim 2, wherein: The inside of the front end cover and the rear end cover is respectively provided with a boss, and the boss is matched with the cavity of the glue roller.

10. The adjustable vacuum range size conditioner roll of claim 7, wherein: The glue roller motor and the pressing rod motor are respectively fixed on the rack.

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