CN213459823U

CN213459823U - A unwinding mechanism for electricity core rubber coating

Info

Publication number: CN213459823U
Application number: CN202022209800.8U
Authority: CN
Inventors: 冉昌林; 杨伟伟; 刘水洲
Original assignee: Wuhan Yifi Laser Equipment Co ltd
Current assignee: Wuhan Yifi Laser Corp Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-15
Anticipated expiration: 2030-09-30

Abstract

The embodiment of the utility model provides an unwinding mechanism for electricity core rubber coating, include: the tensioning disc is used for sleeving an adhesive tape roll and comprises a supporting disc body and a plurality of radial adjusting pieces, and the radial adjusting pieces are circumferentially arranged on the side wall of the supporting disc body; the output end of the rotary driving piece is connected with the tensioning disc; the utility model discloses simple structure, low cost have realized opening a book reliably steadily to the adhesive tape book of different specifications, are favorable to improving the efficiency to electric core rubber coating greatly.

Description

A unwinding mechanism for electricity core rubber coating

Technical Field

The utility model relates to a battery processing technology field especially relates to an unwinding mechanism for electricity core rubber coating.

Background

The battery core is the most important component of the battery, and the battery core can be assembled to form the battery after being sequentially processed by the processes of mechanical/ultrasonic kneading, encapsulation, shell entering, current collecting disc welding and the like. Therefore, the performance of the battery core has direct influence on the performance of the battery, and the preparation process of the battery core before the battery is assembled is very important.

The battery core structure of the battery has a plurality of structures, one of which is that a plurality of diaphragms and aluminum films are alternately wrapped, two clicks are arranged at one end of a wrapped soft package, and then an aluminum sheet is wrapped at the periphery. Because the outer side wall of the battery core and the inner side wall of the battery shell have very precise assembly dimensions, the battery core is easily scratched by the shell of the battery if the battery core is directly subjected to rubbing treatment and is directly subjected to shell entering operation; meanwhile, when the bare cell is directly inserted into the shell, the aluminum sheet on the periphery of the cell is contacted with the battery shell, so that short circuit is easily caused. For this reason, it is usually necessary to wrap a layer of insulating glue on the outer side wall of the flattened battery core.

At present, when the electricity core rubber coating, generally adopt artifical rubber coating or the mode of rubber coating machine rubber coating, wherein, artifical rubber coating inefficiency, quality are poor, can't satisfy the demand of the automatic equipment production of battery. The rubber coating machine is provided for solving the technical problems of low efficiency and poor quality of manual rubber coating, but the existing rubber coating machine cannot be suitable for stably uncoiling rubber tape rolls of different specifications, and in order to meet the requirement of uncoiling work, uncoiling mechanisms of different specifications are required to be correspondingly assembled on the rubber coating machine, so that the cost is high, the uncoiling mechanisms are required to be frequently disassembled and replaced, time and labor are wasted in operation, and the rubber coating efficiency of an electric core is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an unwinding mechanism for electricity core rubber coating for solve current rubber coating machine and can't be applicable to the problem of opening a book steadily to the adhesive tape roll of different specifications.

The embodiment of the utility model provides an unwinding mechanism for electricity core rubber coating, include: the tensioning disc is used for sleeving an adhesive tape roll and comprises a supporting disc body and a plurality of radial adjusting pieces, and the radial adjusting pieces are circumferentially arranged on the side wall of the supporting disc body; the output end of the rotary driving piece is connected with the tensioning disc.

According to the utility model discloses an unwinding mechanism for electricity core rubber coating, radial regulating part is including adjusting support and elastic pressing piece, elastic pressing piece's terminal surface orientation the lateral wall of support disk body, elastic pressing piece's one end is connected adjust the support, it is used for adjusting to adjust the support elastic pressing piece for support the central axial flare angle of disk body.

According to the utility model discloses an unwinding mechanism for electricity core rubber coating, radial regulating part still includes elastic support, elastic support's one end is connected the lateral wall of support disk body, elastic support's the other end is along radial connection the terminal surface of elasticity preforming.

According to the utility model discloses an unwinding mechanism for electricity core rubber coating, be formed with the recess on the lateral wall of support disk body, the elastic support orientation the one end of supporting the disk body stretch into to in the recess, and connect the tank bottom of recess.

According to the utility model discloses an unwinding mechanism for electricity core rubber coating, elastic support includes at least one in the middle of spring, elastic rod, the flexure strip.

According to the utility model discloses an uncoiling mechanism for electricity core rubber coating of an embodiment, the elasticity preforming is the strip, including tensioning section and guide section; the tensioning section is used for being arranged along the side wall of the supporting disc body, one end of the tensioning section is connected with the adjusting support, the other end of the tensioning section is connected with one end of the guiding section, and the other end of the guiding section is used for obliquely extending to the center of the supporting disc body.

According to the utility model discloses an unwinding mechanism for electricity core rubber coating, it includes pedestal, regulating spindle and regulating block to adjust the support, the pedestal install in support the disk body and be close to on the terminal surface of one side of rotary driving piece, the regulating spindle install in on the pedestal, the one end of regulating block is connected the regulating spindle, the other end is connected the one end of elasticity preforming.

According to the utility model discloses an unwinding mechanism for electricity core rubber coating, radial adjusting part is in be the circumference equipartition on the support disk body.

According to the utility model discloses an unwinding mechanism for electricity core rubber coating, rotary driving spare includes step motor and reduction gear, step motor's output is connected the input of reduction gear, the output coaxial coupling of reduction gear the tensioning dish.

The embodiment of the utility model provides a pair of an unwinding mechanism for electricity core rubber coating, cooperate through a plurality of radial regulating parts, can realize the regulation to the tensioning diameter of tensioning dish, so that the tensioning dish realizes the fixed of the adhesive tape book of different specifications, and when the rotation of rotary driving piece drive tensioning dish, steerable adhesive tape book unreels steadily, prevent that the adhesive tape book from dropping from the tensioning dish, thereby realized carrying out the reliable and stable rubber coating of opening a book to the adhesive tape book of different specifications, be favorable to improving the efficiency to electric core rubber coating greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an automatic battery cell encapsulation device provided in an embodiment of the present invention;

fig. 2 is a schematic view of a structure of a cell encapsulation device for encapsulating a cell according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of an unwinding mechanism according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first view angle of a tension disc according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a second viewing angle of the tension disc according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a directional adjustment mechanism according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a tape cutting device according to an embodiment of the present invention;

fig. 8 is a schematic structural view of the two adhesive tape fixing claws of the embodiment of the present invention in front view;

FIG. 9 is a schematic view of a single adhesive tape holding claw according to an embodiment of the present invention;

fig. 10 is a schematic perspective view of two cooperating drawstring clamping jaws according to an embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of a single drawstring jaw in accordance with an embodiment of the present invention;

fig. 12 is a first structural schematic view of a cutter according to an embodiment of the present invention;

fig. 13 is a second schematic structural diagram of the cutter according to the embodiment of the present invention.

In the figure, 1, a frame; 2. an uncoiling mechanism; 21. a rotary drive member; 211. a stepping motor; 212. a speed reducer; 22. a tension disc; 221. supporting the tray body; 222. adjusting the support; 223. elastic tabletting; 224. elastic support; 3. a tension adjusting mechanism; 31. a first guide roller; 32. a second guide roller; 33. a tension roller; 34. a third guide roller; 35. a fourth guide roller; 4. a tape positioning unit; 41. a first clamping cylinder; 42. fixing claws of the adhesive tape; 43. a first clamping structure; 5. an adhesive tape pulling unit; 51. a first linear module; 52. a second clamping cylinder; 53. a clamping jaw is drawn; 54. a second clamping structure; 6. a flexible press-covering mechanism; 61. a flexible press block; 62. a transfer rack; 7. a shearing mechanism; 71. a second linear module; 72. a cutter; 73. a tool holder; 8. a directional adjustment mechanism; 81. a vertical guide rail; 82. a slide base; 83. a balancing weight; 84. a limiting block; 85. an induction sheet; 86. a first proximity switch; 87. a second proximity switch; 9. an adhesive tape roll; 10. an adhesive tape.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, the embodiment provides an automatic battery cell encapsulation device, including: the unwinding mechanism 2 comprises a rotary driving part 21 and a tensioning disc 22, the output end of the rotary driving part 21 is connected with the tensioning disc 22, and the tensioning disc 22 is used for sleeving the adhesive tape roll 9; the tension adjusting mechanism 3 is used for adjusting the tension of the adhesive tape 10 uncoiled from the adhesive tape coil 9 and guiding the adhesive tape 10 with the adjusted tension to the tape drawing mechanism; the belt drawing mechanism comprises a rubber belt positioning unit 4 and a rubber belt pulling and holding unit 5, and the rubber belt positioning unit 4 and the rubber belt pulling and holding unit 5 are sequentially arranged along the conveying direction of the rubber belt 10; the flexible pressing mechanism 6 is arranged on one side of the belt pulling mechanism, and is provided with a pressing surface for flexibly pressing the back surface of the adhesive tape 10; and the shearing mechanism 7 is arranged close to the adhesive tape positioning unit 4 and is used for shearing the adhesive tape 10.

As shown in fig. 2, when the automatic battery cell encapsulating device shown in this embodiment encapsulates a battery cell, the device is adapted to stably unwind tape rolls 9 of different specifications by providing the tension disc 22 on the unwinding mechanism 2, after the tape 10 unwound from the tape roll 9 passes through the tension adjusting mechanism 3, the tension of the tape 10 can be adjusted by the tension adjusting mechanism 3, so that the tape 10 can be stably conveyed to the tape pulling mechanism, after the tape 10 is pulled in place by the tape pulling unit 5 of the tape pulling mechanism, the tape 10 can be instantly positioned by the tape positioning unit 4, so as to shear the tape 10 in a tensioned state, and the flexible pressing mechanism 6 applies a flexible pressing force to the back of the tape 10, so as to ensure that the adhering surface of the tape 10 is reliably attached to the surface of the battery cell without damaging the tape 10 and the battery cell, so as to control the rotation of the battery cell, the encapsulation operation of the end part of the electric core can be well completed, so that the stability of encapsulation operation is ensured, and the encapsulation effect is also ensured.

It should be noted here that, when encapsulating the battery cell, a battery cell lifting mechanism and a battery cell rotating mechanism are usually configured, the battery cell lifting mechanism is installed below the pulling belt mechanism and located under the shearing mechanism 7, the battery cell rotating mechanism and the battery cell lifting mechanism are arranged relatively, so that the battery cell is lifted to a preset height through the battery cell lifting mechanism, so that when the adhesive tape 10 is sheared, the adhesive tape 10 is attached to the surface of the battery cell, and the battery cell is driven to rotate on the battery cell lifting mechanism by 360 degrees through the battery cell rotating mechanism, thereby completing encapsulating of the battery cell.

As shown in fig. 3, the tension disc 22 in this embodiment includes a support disc body 221 and a plurality of radial adjustment members that are circumferentially mounted on a side wall of the support disc body 221.

Specifically, in the present embodiment, the radial adjusting elements are matched to adjust the tensioning diameter of the tensioning disc 22, so that the tensioning disc 22 fixes the adhesive tape rolls 9 of different specifications, and when the rotary driving element 21 drives the tensioning disc 22 to rotate, the adhesive tape roll 9 can be controlled to be stably unreeled, and the adhesive tape roll 9 is prevented from falling off the tensioning disc 22.

The rotary driving member 21 shown in this embodiment includes a stepping motor 211 and a speed reducer 212, an output end of the stepping motor 211 is connected to an input end of the speed reducer 212, an output end of the speed reducer 212 is connected to one end of a rotating shaft through a coupling, the rotating shaft is rotatably mounted on the frame 1, and the other end of the rotating shaft is coaxially connected to the supporting disc 221 of the tension disc 22. Meanwhile, the number of the radial adjusting members shown in this embodiment may be specifically three, and the three radial adjusting members may be uniformly installed on the side wall of the support disc 221 in the circumferential direction.

As shown in fig. 4 and 5, in the present embodiment, the radial adjustment member includes an adjustment seat 222 and an elastic pressing piece 223, an end surface of the elastic pressing piece 223 faces a side wall of the support disc 221, one end of the elastic pressing piece 223 is connected to the adjustment seat 222, and the adjustment seat 222 is used for adjusting an opening angle of the elastic pressing piece 223 relative to a central axial direction of the support disc 221.

It should be noted here that, when the opening angle of each elastic pressing piece 223 is adjusted by the adjusting support 222, the opening angle of each elastic pressing piece 223 with respect to the central axial direction of the supporting disc body 221 should be kept consistent in size so as to fix the adhesive tape roll 9.

Further, in this embodiment, the radial adjustment member further includes an elastic support 224, a groove is formed on a side wall of the support disc 221, one end of the elastic support 224 facing the support disc 221 extends into the groove and is connected to a groove bottom of the groove, and the other end of the elastic support 224 is radially connected to an end surface of the elastic pressing piece 223. In this way, by providing the elastic support 224 between the elastic pressing piece 223 and the side wall of the support tray 221, the opening angle adjustment allowance for the elastic pressing piece 223 can be further enhanced, and the elastic pressing piece 223 is ensured to be stably maintained at the corresponding opening angle.

Preferably, the elastic support 224 in this embodiment includes at least one of a spring, an elastic rod, and an elastic sheet. As shown in fig. 4 and 5, the elastic support 224 of the present embodiment is preferably a spring.

As shown in fig. 5, in a further preferred embodiment, the elastic pressing piece 223 is in a strip shape and includes a tension section and a guide section, the tension section is arranged along the side wall of the supporting disk body 221, one end of the tension section is connected with the adjusting support 222, the other end of the tension section is connected with one end of the guide section, and the other end of the guide section is arranged to extend obliquely to the center of the supporting disk body 221. Here, the elastic pressing pieces 223 are designed as the tensioning sections and the guiding sections, so that the adhesive tape roll 9 is conveniently sleeved on the tensioning sections of the elastic pressing pieces 223 under the guidance of the guiding sections, and thus the tensioning sections of the elastic pressing pieces 223 provide radial tensioning force to the adhesive tape roll 9 under the support of the support disc body 221, and thus the adhesive tape roll 9 is fixed in a self-adaptive manner.

As shown in fig. 4, the adjusting support 222 in this embodiment includes a seat body, an adjusting shaft and an adjusting block, the seat body is installed on the end surface of the supporting disk 221 near the side of the rotary driving member 21, the adjusting shaft is installed on the seat body, one end of the adjusting block is connected to the adjusting shaft, and the other end is connected to one end of the elastic pressing piece 223. Therefore, when the rotation angle of the adjusting shaft in the seat body is adjusted, the adjusting block can deflect by a corresponding angle adaptively along with the rotation of the adjusting shaft, and the opening angle of the elastic pressing piece 223 relative to the central axial direction of the supporting disc body 221 can be adjusted because one end of the adjusting block, which is far away from the adjusting shaft, is connected with one end of the elastic pressing piece 223.

As shown in fig. 1, the tension adjusting mechanism 3 in this embodiment includes a tension roller 33 and at least two guide rollers, the tension roller 33 is disposed between the two guide rollers, one end of the tension roller 33 is connected to the directional adjusting mechanism 8, and the directional adjusting mechanism 8 is configured to control the tension roller 33 to move along a preset direction, so as to adjust the tension of the adhesive tape 10.

Specifically, the guide rollers shown in this embodiment include a first guide roller 31, a second guide roller 32, a third guide roller 34, and a fourth guide roller 35, where the first guide roller 31, the second guide roller 32, and the third guide roller 34 are horizontally arranged on a straight line, and the fourth guide roller 35 is located right below the third guide roller 34. The tension roller 33 shown in this embodiment is disposed between the second guide roller 32 and the third guide roller 34, and the orientation adjusting mechanism 8 is configured to control the tension roller 33 to move along the vertical direction, so as to adjust the tension of the adhesive tape 10. Accordingly, the tape 10 unwound from the tape roll 9 passes through the first guide roller 31, the second guide roller 32, the tension roller 33, the third guide roller 34, and the fourth guide roller 35 in this order, and is then conveyed to the tape positioning unit 4.

As shown in fig. 6, in a further preferred embodiment, the orientation adjusting mechanism 8 includes a vertical guide rail 81, a sliding seat 82 and a counterweight 83, the sliding seat 82 is slidably mounted on the vertical guide rail 81, one end of the tension roller 33 is connected to the sliding seat 82 after passing through a strip-shaped hole vertically arranged on the frame 1, and the counterweight 83 is mounted on the sliding seat 82, wherein an inserting rod vertically arranged is provided on the sliding seat 82 shown in this embodiment, and a plurality of counterweights 83 can be inserted on the inserting rod.

Specifically, in practical use, the sliding fit structure of the sliding seat 82 and the vertical guide rail 81 can better guide the tension roller 33 to perform lifting movement along the vertical direction, and when the tension force applied to the tension roller 33 from the adhesive tape 10 is balanced with the load force applied to the counterweight block 83, the tension roller 33 will keep a balanced state, so that the size of the additional counterweight can be controlled to meet different tension adjustment requirements of the adhesive tape 10.

As shown in fig. 6, in order to ensure that the tension roller 33 reliably performs the lifting movement, the present embodiment is provided with stoppers 84 at upper and lower ends of the vertical guide rail 81, respectively.

Meanwhile, in order to further monitor and warn the limit position of the movement of the tension roller 33, in this embodiment, an induction sheet 85 may be installed on the sliding base 82, and a first proximity switch 86 and a second proximity switch 87 may be correspondingly disposed at the upper end and the lower end of the vertical guide rail 81, wherein the detection ends of the first proximity switch 86 and the second proximity switch 87 respectively correspond to the induction sheet 85.

As shown in fig. 7, this embodiment provides a schematic structural diagram of a tape cutting device, where the tape cutting device includes the tape pulling mechanism, the flexible pressing mechanism 6, and the cutting mechanism 7 shown in the above embodiment, when cutting a tape 10, a tape holding unit 5 corresponding to the tape pulling mechanism moves to a tape positioning unit 4, after the tape positioning unit 4 releases positioning of the unwound tape 10, the tape holding unit 5 holds a free end of the tape 10, and when holding the tape 10 in place, the tape positioning unit 4 positions the tape 10, so that the cutting mechanism 7 cuts the tape 10, and ensures that the cut tape 10 is adhered to the surface of an electrical core, thereby performing encapsulation processing on the electrical core. In the process of shearing the adhesive tape 10, the flexible pressing mechanism 6 applies flexible pressing force to the back surface of the adhesive tape 10, so that the adhesive surface of the adhesive tape 10 is reliably attached to the surface of the pre-encapsulated battery cell.

As shown in fig. 7 to 8, the tape positioning unit 4 of the present embodiment includes a first clamping cylinder 41 and two tape fixing claws 42, an output end of the first clamping cylinder 41 is connected to one end of the two tape fixing claws 42, and the other ends of the two tape fixing claws 42 are respectively provided with a first clamping structure 43 to form a clamping action on the tape 10, so that the two tape fixing claws 42 can be controlled by the first clamping cylinder 41 to perform an opening action and a clamping action.

As shown in fig. 9, in order to prevent the two tape fixing claws 42 from damaging the tape 10 during the clamping process, the first clamping structure 43 shown in this embodiment is a clamping plane on which a plurality of sunken grooves are formed. Here, by providing the sinking groove on the clamping plane, it is ensured that sufficient friction force is maintained between the clamping plane of the two tape fixing claws 42 and the tape 10, and no clamping damage is generated to the tape 10 during clamping, thereby achieving good positioning and clamping of the tape 10.

In one preferred embodiment, the sinking grooves are further arranged in an array on the clamping plane.

As shown in fig. 7, the adhesive tape pulling and holding unit 5 shown in this embodiment includes a first linear module 51, a second clamping cylinder 52 and two pull tape clamping jaws 53, the sliding table of the first linear module 51 is used for moving along the conveying direction of the adhesive tape 10, the second clamping cylinder 52 is installed on the sliding table of the first linear module 51, the output end of the second clamping cylinder 52 is connected with one end of the two pull tape clamping jaws 53, and the other end of each of the two pull tape clamping jaws 53 is provided with a second clamping structure 54, so as to clamp the adhesive tape 10.

Specifically, the two drawtape jaws 53 of the present embodiment are shown with their clamping ends horizontally opposed to the clamping ends of the two adhesive tape tabs 42. When the adhesive tape 10 is pulled and held, the sliding table of the first linear module 51 moves towards the adhesive tape positioning unit 4, so that the two pull tape clamping jaws 53 correspondingly move towards the two adhesive tape positioning jaws 42, when the sliding table moves in place, the second clamping cylinder 52 drives the two pull tape clamping jaws 53 to perform clamping action, so as to clamp the free end of the adhesive tape 10, then, the sliding table of the first linear module 51 moves towards the opposite direction again, so as to be far away from the adhesive tape positioning unit 4, so that the free end of the adhesive tape 10 can be clamped by the two pull tape clamping jaws 53 to move for a corresponding distance.

As shown in fig. 10 and 11, in order to ensure that the clamping ends of the two drawstring clamping jaws 53 reliably clamp the adhesive tape 10 and prevent the adhesive tape 10 from falling off during the process of pulling and holding the adhesive tape 10, the second clamping structures 54 on the two drawstring clamping jaws 53 shown in the present embodiment are clamping curved surfaces, a plurality of convex portions and a plurality of concave portions are formed on the clamping curved surfaces, and the corresponding convex portions and the corresponding concave portions on the clamping curved surfaces of the two drawstring clamping jaws 53 are correspondingly engaged with each other.

The protruding portions shown in this embodiment are long and arranged side by side, the direction in which each protruding portion is arranged is perpendicular to the conveying direction of the adhesive tape 10, a concave portion is formed between two adjacent protruding portions, and the cross-sectional shapes of the protruding portions and the concave portions can be isosceles trapezoids.

As shown in fig. 7, the cutting mechanism 7 in this embodiment includes a second linear module 71 and a cutting blade 72, the cutting blade 72 is connected to the sliding table of the second linear module 71, and a blade of the cutting blade 72 is used for extending to the back surface of the adhesive tape 10, wherein the adhering surface of the adhesive tape 10 is arranged downward, and the back surface of the adhesive tape 10 is arranged upward.

Specifically, the moving direction of the sliding table on the second linear module 71 shown in this embodiment is a vertical direction, the tool holder 73 is installed on the sliding table of the second linear module 71, and the cutter 72 is installed on the tool holder 73, so that the cutter 72 is driven by the second linear module 71 to move up and down, and the adhesive tape 10 is effectively cut off.

As shown in fig. 12, the cutting blade 72 of the present embodiment may be a surgical knife, and the cutting edge of the cutting blade 72 is a continuous inclined cutting edge, which is concave and arc-shaped. Therefore, when the adhesive tape 10 is cut, one end of the bevel edge first cuts the edge of the adhesive tape 10, and the bevel edge gradually contacts the adhesive tape 10 as the cutter 72 moves vertically downward, and cuts the adhesive tape 10.

As shown in fig. 13, the cutting blade 72 of the present embodiment is a serrated cutting blade, which is linear. Therefore, when the adhesive tape 10 is cut, the serrated edge directly contacts the back surface of the adhesive tape 10, and the serrated edge cuts the adhesive tape 10 once again as the cutter 72 moves vertically downward.

As shown in fig. 7, the flexible pressing mechanism 6 of the present embodiment includes a flexible pressing block 61, and the flexible pressing block 61 is connected to the sliding table of the second linear die set 71.

Specifically, the sliding table of the second linear module 71 shown in this embodiment is further connected to one end of the adapting frame 62, and the flexible pressing block 61 is fixed to the other end of the adapting frame 62, wherein the adapting frame 62 may be L-shaped, the flexible pressing block 61 is fixed to the horizontal side of the adapting frame 62, and the flexible pressing block 61 may be made of sponge.

Because cutter 72 and flexible briquetting 61 are fixed in on the slip table of second straight line module 71 jointly to cutter 72 and flexible briquetting 61 can be under the drive of the slip table of second straight line module 71, do synchronous rising or decline, and then can be when cuting sticky tape 10, still exert flexible pressure by flexible briquetting 61 to the back of sticky tape 10 and cover the power, so that the face of pasting of sticky tape 10 is attached in the surface of the electric core of pre-encapsulation reliably, thereby when control electric core is rotatory, can accomplish the rubber coating operation to electric core tip betterly.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an unwinding mechanism for electricity core rubber coating which characterized in that includes:

the tensioning disc is used for sleeving an adhesive tape roll and comprises a supporting disc body and a plurality of radial adjusting pieces, and the radial adjusting pieces are circumferentially arranged on the side wall of the supporting disc body;

the output end of the rotary driving piece is connected with the tensioning disc.

2. The unwinding mechanism for encapsulating battery cells according to claim 1, wherein the radial adjusting member comprises an adjusting support and an elastic pressing sheet, an end surface of the elastic pressing sheet faces the side wall of the supporting disk body, one end of the elastic pressing sheet is connected with the adjusting support, and the adjusting support is used for adjusting an opening angle of the elastic pressing sheet relative to a central axial direction of the supporting disk body.

3. The unwinding mechanism for encapsulating battery cells according to claim 2, wherein the radial adjusting member further comprises an elastic support, one end of the elastic support is connected to the side wall of the supporting disc body, and the other end of the elastic support is radially connected to the end face of the elastic pressing sheet.

4. The unwinding mechanism for encapsulating battery cells according to claim 3, wherein a groove is formed on the side wall of the supporting disc body, and one end of the elastic support facing the supporting disc body extends into the groove and is connected with the bottom of the groove.

5. The unwinding mechanism for encapsulating battery cells as claimed in claim 3, wherein the elastic support comprises at least one of a spring, an elastic rod and an elastic sheet.

6. The unwinding mechanism for encapsulating battery cells as claimed in claim 2, wherein the elastic pressing sheet is in a strip shape and comprises a tensioning section and a guiding section; the tensioning section is used for being arranged along the side wall of the supporting disc body, one end of the tensioning section is connected with the adjusting support, the other end of the tensioning section is connected with one end of the guiding section, and the other end of the guiding section is used for obliquely extending to the center of the supporting disc body.

7. The unwinding mechanism for encapsulating the battery cell according to claim 2, wherein the adjusting support comprises a seat body, an adjusting shaft and an adjusting block, the seat body is mounted on an end surface of one side of the supporting disk body close to the rotary driving member, the adjusting shaft is mounted on the seat body, one end of the adjusting block is connected with the adjusting shaft, and the other end of the adjusting block is connected with one end of the elastic pressing sheet.

8. The unwinding mechanism for encapsulating battery cells according to any of claims 1 to 7, wherein the radial adjusting members are circumferentially and evenly distributed on the supporting disc body.

9. The unwinding mechanism for encapsulating battery cells according to any of claims 1 to 7, wherein the rotary driving member comprises a stepping motor and a speed reducer, an output end of the stepping motor is connected to an input end of the speed reducer, and an output end of the speed reducer is coaxially connected to the tensioning disc.