CN209853423U - Unwinding device and unwinding equipment - Google Patents

Abstract

The utility model relates to an unwinding device and unwinding equipment. Unwinding device, it includes: the unwinding shaft is used for mounting a material roll with a head and a tail; the unwinding device fixes the tape head through the butt joint assembly and enables the tape head to be in a state to be butted; the tape head traction assembly comprises a driving part and a traction part, wherein the driving part is connected with the traction part and can drive the traction part to move at an unreeling position and a to-be-butted position along a preset track, the traction part is connected with the tape head at the unreeling position, the traction part releases the tape head at the to-be-butted position, and the butt-joint assembly fixes the released tape head. The utility model discloses unwinding device can replace artifical completion splicing work to a great extent to effectively shorten the splicing process consuming time, improve production efficiency.

Description

Unwinding device and unwinding equipment

technical field

The utility model relates to the technical field of pole piece processing of secondary batteries, in particular to an unwinding device and unwinding equipment.

Background technique

With the rapid development of the lithium battery industry, the requirements for the production efficiency of batteries are getting higher and higher. The battery core is formed by winding the pole piece. In the preparation process of power battery cells, it is necessary to unwind the pole piece material through the unwinding equipment to facilitate the corresponding processing of the pole piece by the downstream processing equipment. At present, after the unwinding of the previous roll of material is completed, the roll is manually changed, and at the same time, the tape head of the next roll needs to be manually connected and fixed with the tape tail of the previous roll. However, due to the differences in the individual skills of employees, the traditional manual splicing takes a long time, which seriously affects the production efficiency.

Utility model content

The embodiment of the utility model provides an unwinding device and unwinding equipment. The unwinding device can replace the manual splicing work to a large extent, thereby effectively shortening the time-consuming of the splicing process and improving the production efficiency.

On the one hand, an embodiment of the present utility model provides an unwinding device, which includes:

The unwinding shaft is used to install the material roll with the tape head and the tape tail; the docking assembly is arranged downstream of the unwinding shaft, and the unwinding device fixes the tape head through the butting assembly and makes the tape head in the state to be butted; the tape head pulling assembly, including the driving part and the pulling The driving member is connected with the pulling member and can drive the pulling member to move along a predetermined trajectory between the unwinding position and the position to be docked, wherein the pulling member connects the tape head at the unwinding position, the pulling member releases the tape head at the position to be butted and the docking assembly is fixed Freed lead.

According to an aspect of the embodiment of the present invention, the traction component includes a first bracket and a pneumatic first adsorption component connected to the first bracket, the first bracket is connected with the driving component, and along the radial direction of the unwinding shaft, the first The suction part is arranged at intervals from the unwinding shaft, and the pulling part suctions the tape head at the unwinding position through the first suction part.

According to an aspect of the embodiment of the present invention, the first suction part includes a flexible suction cup with a suction port, and at the unwinding position, the flexible suction cup suctions the tape head through the suction port.

According to an aspect of the embodiment of the present invention, the unwinding device further includes a tape head detection sensor, the tape head detection sensor is spaced apart from the unwinding shaft, and the unwinding device detects and judges whether the tape head is in the unwinding position through the tape head detection sensor.

According to an aspect of the embodiment of the present invention, the docking assembly includes a driving unit, a second bracket connected to the driving unit, and a second pneumatic suction component connected to the second bracket, along the radial direction of the unwinding shaft, the second bracket The suction part and the unwinding shaft are spaced apart, and the docking assembly adsorbs the tape head at the to-be-butted position through the second suction part;

According to an aspect of the embodiment of the present invention, the second adsorption component includes a pressing plate with an air inlet, and the pressing plate absorbs the lead through the air inlet.

According to an aspect of the embodiment of the present invention, the unwinding device further includes a glue sticking assembly, the glue sticking assembly is arranged downstream of the unwinding shaft and upstream of the docking assembly, and the traction member is driven by the driving member along a predetermined track at the unwinding position , The glue sticking position and the position to be docked move, and the unwinding device sticks the adhesive glue to the tape head in the glue sticking position through the glue sticking assembly.

According to an aspect of the embodiment of the present invention, the glue sticking assembly includes a support platform, a first pressing member and a second pressing piece arranged opposite to the supporting platform, and a glue sticking mechanism, and the glue sticking mechanism is provided on the first pressure piece. Upstream, the first pressing piece is arranged upstream of the second pressing piece, the first pressing piece and the second pressing piece respectively form a material passing gap with the support platform, the first pressing piece and the second pressing piece Both can move close to or away from the support platform to press the tape head in the glueing position together with the support platform.

According to an aspect of the embodiment of the present invention, the unwinding device further includes a cutter assembly, the cutter assembly includes cutters disposed downstream of the first pressing member and upstream of the second pressing member, and the support platform has a connection with the cutters Correspondingly set aside knife groove, the cutter assembly cuts off the belt tail through the cutter.

According to an aspect of the embodiment of the present invention, the unwinding device further includes a first drive roller and a second drive roller, the first drive roller is arranged upstream of the glue sticking assembly and downstream of the unwinding shaft, and the second drive roller is arranged on the glue sticker Downstream of components and upstream of docked components.

An unwinding device according to an embodiment of the present invention includes an unwinding shaft for installing a material roll, a butt assembly for abutting the tape head, and a head pulling assembly for pulling the tape head. The pulling member of the head pulling assembly is capable of connecting the head of the roll at the unwinding position. Under the driving action of the driving part, the pulling part can pull the lead to the position to be butted, and then transfer the lead to the butt assembly, and then the butt assembly completes the splicing process. Because the lead pulling assembly and the docking assembly work together to quickly and accurately position the lead at the position to be butted and complete the splicing, the manual splicing method can be replaced to a large extent, thereby effectively shortening the time consuming of the splicing process and improving production. efficiency.

In another aspect, an unwinding device is provided according to an embodiment of the present invention, comprising at least one unwinding device of the above-mentioned embodiments.

According to another aspect of the embodiment of the present invention, the unwinding device includes two unwinding devices, a middle dividing line is formed between the two unwinding devices, and the two unwinding devices are respectively arranged on both sides of the middle dividing line, wherein, In the direction away from the middle dividing line, the butting assemblies and the head pulling assemblies included in the two unwinding devices are arranged at intervals, and the butting assemblies are close to the middle dividing line.

According to another aspect of the embodiment of the present invention, the unwinding device further includes an edge alignment detection sensor arranged at intervals from the docking assembly, and the unwinding device detects and determines the edge alignment of the two material rolls through the edge alignment detection sensor.

According to another aspect of the embodiment of the present invention, the unwinding device further includes a support plate, the support plate has a first escape hole corresponding to the predetermined trajectory of the pulling member and a second escape hole corresponding to the docking assembly, The first give-away hole and the second give-away hole are communicated at the position to be butted, and the unwinding device further includes two third drive rollers and a guide roller, the two third drive rollers are arranged at intervals, and between the two third drive rollers A material passing gap is formed, and the guide roller is arranged downstream of the third drive roller.

Description of drawings

The features, advantages and technical effects of the exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

1 is a schematic structural diagram of a first view angle of an unwinding device according to an embodiment of the present invention;

Fig. 2 is the second perspective structure schematic diagram of the unwinding device in Fig. 1;

Fig. 3 is the enlarged view of A place in Fig. 2;

4 is a schematic structural diagram of a driving component and a traction component according to an embodiment of the present invention;

5 is a schematic structural diagram of the pulling member moving to the glue sticking position in the unwinding device according to an embodiment of the present invention;

6 is a schematic structural diagram of the pulling member moving to the position to be docked in the unwinding device according to an embodiment of the present invention

7 is a schematic structural diagram of a first perspective view of an unwinding device according to an embodiment of the present invention;

Fig. 8 is the second perspective structure schematic diagram of the unwinding device in Fig. 7;

9 is a schematic structural diagram of the unwinding device in a working state according to an embodiment of the present invention;

10 is a schematic structural diagram of the unwinding device in another working state according to an embodiment of the present invention;

11 is a schematic structural diagram of the unwinding device in another working state according to an embodiment of the present invention.

In the drawings, the figures are not drawn to actual scale.

Tag Description:

10. Unwinding device; 11. Unwinding shaft; 12. Glue assembly; 121, Support platform; 122, First pressing piece; 123, Second pressing piece; 132, the second adsorption part; 14, the lead traction assembly; 141, the traction part; 141a, the first bracket; 141b, the first adsorption part; 142, the driving wheel; 143, the driven wheel; 15. Lead detection sensor; 16. Cutter assembly; 17. First drive roller; 18. Second drive roller;

20. Unwinding equipment; 21. Edge alignment detection sensor; 22. Support plate; 221. First clearance hole; 222. Second clearance hole; 23. Third drive roller; 24. Guide roller; 99. Material roll ; 100, the middle dividing line;

X, unwinding position; Y, gluing position; Z, the position to be docked.

Detailed ways

The embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments.

In the description of the present utility model, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", The orientation or positional relationship indicated by "outer", "front end", "rear end", "head", "tail", etc. are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a Removably connected, or integrally connected; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In order to better understand the present invention, the unwinding device 10 and the unwinding device 20 of the embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 11 .

The unwinding device 10 of the embodiment of the present invention is used to perform the unwinding operation on the pole piece material roll 99 . The pole pieces themselves are of thin sheet structure. In order to facilitate transportation and use, the strip-shaped pole pieces are usually wound into a roll 99 . The reel 99 has an exposed tape head and an innermost tape tail. When subsequent processing of the pole piece is required, the corresponding processing of the pole piece is performed by unwinding the material roll 99 in advance.

Referring to FIGS. 1 and 2 , the unwinding device 10 according to the embodiment of the present invention includes an unwinding shaft 11 , a docking assembly 13 and a head pulling assembly 14 .

The unwinding shaft 11 in this embodiment may be an air expansion shaft. The part of the unwinding shaft 11 for mounting the material roll 99 is an expandable structure. After the material roll 99 is sleeved on the unwinding shaft 11, the expandable structure of the unwinding shaft 11 expands to tighten the material roll 99, so that a tight fit is formed between the unwinding shaft 11 and the material roll 99, effectively passing the unwinding shaft 11 to the material. The roll 99 transmits rotational torque.

The docking assembly 13 in this embodiment is disposed downstream of the unwinding shaft 11 . The unwinding device 10 can fix the tape head through the docking assembly 13 and keep the tape head in a state to be docked. The lead pulling assembly 14 of the embodiment of the present invention includes a driving part (not shown in the figure) and a pulling part 141 . The driving part is connected with the pulling part 141 and can drive the pulling part 141 to move at the unwinding position X and the to-be-butted position Z along a predetermined trajectory. At the unwinding position X, the pulling member 141 can be connected to the head of the fixed web 99 . The pulling member 141 completes the normal unwinding operation of the material roll 99 through the movement of the pulling belt head. The pulling member 141 pulls the tape head to move from the unwinding position X to the position Z to be docked. After the pulling member 141 moves to the position Z to be butted, the pulling member 141 releases the tape head at the position Z to be butted. At the same time, the docking assembly 13 connects and fixes the released tape heads, thereby completing the transfer action of the tape heads. The connected and fixed tape head of the docking assembly 13 is in a docking state, waiting to be docked with the tape tail of another material roll 99 that is nearing completion of unwinding. After the docking operation of the tape head and the tape tail is completed, the docking assembly 13 will release the tape head again, so that the material roll 99 can continue to be fed to the next process. In one example, the pulling member 141 pulls the tape head to move to the gluing position Y, and at this time, the adhesive glue is applied to the predetermined position of the tape head by manual gluing, or, after the docking assembly 13 is connected and fixed to the tape head, manual gluing is performed. way to paste the adhesive on the predetermined position of the tape head. In this way, the tape head and the tape tail can be bonded and fixed by adhesive glue to complete the docking action. The pulling member 141 can reciprocate at the unwinding position X, the gluing position Y and the to-be-butted position Z. Alternatively, the adhesive may be glue or double-sided tape. The gluing position Y is located downstream of the unwinding position X and upstream of the position Z to be docked. In this application, "upstream" and "downstream" mainly refer to the processing sequence of the pole pieces, and do not limit the actual structure and position.

In one embodiment, the unwinding shaft 11 and the docking assembly 13 are located on the same side of the moving track of the pulling member 141 . From the state and position shown in FIG. 2 , the unwinding shaft 11 and the docking assembly 13 are located below the movement trajectory of the pulling member 141 . The moving track of the traction member 141 has a first straight section, a second straight section intersecting with the first straight section, and a third straight section intersecting with the second straight section in sequence. The first straight section, the second straight section and the third straight section are transitionally connected to each other by circular arc sections. Both the first straight section and the third straight section are located on the same side of the second straight section. The unwinding shaft 11 corresponds to an area of the first straight section away from the second straight section, and the pulling member 141 in the unwinding position X is located in this area and is spaced from the unwinding shaft 11 by a predetermined distance. The predetermined distance is greater than the thickness of the web 99 . The thickness of the web 99 refers to the distance from the outermost layer to the innermost layer. The docking assembly 13 is disposed correspondingly to an area of the third straight section away from the second straight section, and the pulling member 141 in the position Z to be docked is located in this area.

Referring to FIG. 4 , the driving component of this embodiment includes a power unit and a transmission unit. The transmission unit includes a driving wheel 142 connected with the power unit, a driven wheel 143 and an annular flexible member 144 connected with the driving wheel 142 and the driven wheel 143 . The pulling member 141 is connected with the annular flexible member 144 . The driving part drives the traction part 141 to move through the transmission unit. In one example, the power unit may be a servo motor or a stepper motor. The annular flexible member 144 may be a chain, a timing belt or a belt, and correspondingly, the driving pulley 142 and the driven pulley 143 are both gears or pulleys.

The unwinding device 10 of the embodiment of the present invention includes an unwinding shaft 11 for installing a material roll 99, a butt assembly 13 for abutting the tape head, and a head pulling assembly 14 for pulling the tape head. The pulling member 141 of the head pulling assembly 14 is capable of engaging the head of the roll 99 in the unwinding position X. Under the driving action of the driving part, the pulling part 141 can pull the tape head to the position Z to be docked, and then transfer the tape head to the docking assembly 13, and then the docking assembly 13 completes the taping process. Since the lead pulling assembly 14 and the docking assembly 13 cooperate with each other, the lead can be quickly and accurately positioned at the to-be-butted position Z and the tape splicing is completed, thereby replacing the manual tape splicing method to a large extent, thereby effectively shortening the time consuming of the splicing process. ,Increase productivity. In addition, since the lead pulling assembly 14 and the docking assembly 13 cooperate with each other, the positioning accuracy of the leading position is effectively ensured, which is beneficial to improve the alignment accuracy of the subsequent leading and trailing tapes, thereby reducing the completion of the leading and trailing tape splicing. The possibility of dislocation of the latter two is further reduced due to the dislocation of the lead and the end of the belt. Possibility of creating pole fragmentation bands.

Referring to FIG. 3 , the traction member 141 of this embodiment includes a first bracket 141a and a pneumatic first adsorption member 141b connected to the first bracket 141a. The first bracket 141a is connected with the driving member. In the radial direction of the unwinding shaft 11 , the first suction member 141 b is provided at intervals from the unwinding shaft 11 . The pulling member 141 can suction the tape head at the unwinding position X through the first suction member 141b. The first suction member 141b can generate suction force to firmly suction the tape head. The first adsorption member 141b connects and fixes the tape head by adsorption, so that the stress applied to the tape head is more relaxed and balanced, and the possibility of structural damage to the tape head caused by excessive stress applied by the pulling member 141 to the tape head is effectively reduced. In one embodiment, the first adsorption part 141b is connected with a negative pressure device, and uses negative pressure to generate adsorption force. In one embodiment, the first bracket 141a has a plate-like structure. The first bracket 141a has a first flat plate, a second flat plate intersecting with the first flat plate, and a third flat plate parallel to the first flat plate. The first flat plate, the second flat plate and the third flat plate are configured in a stepped structure. The first bracket 141a is connected with the driving part through the first flat plate. The first suction member 141b is provided on the third flat plate. In one embodiment, the first suction part 141b includes a flexible suction cup with a suction port. In the unwinding position X, the flexible suction cup sucks the tape head through the suction port. The flexible suction cup has good elasticity. In the process of sucking the lead, the flexible suction cup can buffer the collision stress generated when the lead and the flexible suction cup contact and collide instantly, effectively reducing the possibility of the pole piece being damaged or dented by the impact of the pulling member 141, and effectively protecting the structural integrity of the pole piece sex and flatness. Optionally, the material of the flexible suction cup can be silicone or rubber. In one embodiment, the flexible suction cup has an elongated structure, which is approximately the same as the width of the pole piece. In this way, when the flexible suction cup adsorbs the lead, the flexible suction cup can exert a traction force on the pole piece in the entire width direction of the pole piece, thereby reducing the possibility of breakage caused by the unbalanced force in the width direction of the pole piece. In one embodiment, the first suction part 141b includes at least two flexible suction cups. At least two flexible suction cups are arranged at intervals along the axial direction of the unwinding shaft 11 . In the unwinding position X, the suction port faces the unwinding shaft 11 . At least two flexible suction cups are distributed along the width direction of the pole piece, so that when each flexible suction cup sucks the lead, the flexible suction cup can exert traction on the pole piece in the entire width direction of the pole piece, thereby reducing the unbalanced force on the pole piece in the width direction In addition, when one of the suction cups is damaged or there is a gap between it and the pole piece, and the suction force cannot be applied to the pole piece, the remaining suction cups can still exert suction force on the tape head, thus ensuring the continuity of the processing process. .

Referring to FIGS. 5 and 6 , the docking assembly 13 in this embodiment includes a driving unit (not shown in the figure), a second bracket 131 connected with the driving unit, and a pneumatic first bracket 131 connected to the second bracket 131 . Two adsorption parts 132 . In the radial direction of the unwinding shaft 11 , the second suction member 132 is provided at intervals from the unwinding shaft 11 . The docking assembly 13 adsorbs and fixes the tape head at the position Z to be docked through the second adsorption part 132 . The docking assembly 13 drives the second bracket 131 and the second adsorption part 132 to move between the docking position Z and the docking position through the driving unit. The second suction part 132 can generate suction force to firmly suck the tape head. The second adsorption member 132 connects and fixes the belt head by means of adsorption, so that the stress exerted on the belt head is more relaxed and balanced, and the possibility of structural damage to the belt head caused by the pulling member 141 is effectively reduced. In one embodiment, the second adsorption component 132 is connected to a negative pressure device, and uses negative pressure to generate adsorption force. The second suction member 132 moves linearly between the to-be-butted position Z and the butted position. The drive unit may be a telescopic cylinder. When the second suction member 132 is at the docking position Z, it can make way for the pulling member 141 of the lead pulling assembly 14, so that the pulling member 141 can smoothly pass through the second suction member 132 and complete the lead handover work. After the second suction member 132 suctions the tape head, the driving unit can drive the second suction member 132 to move to the docking position, and connect with the tape tail of another material roll 99 that is close to completing the unwinding.

In one embodiment, the second adsorption member 132 includes a pressure plate having at least one air inlet. The platen sucks the lead through the air inlet. The surface on which the air inlet is arranged on the pressing plate is a flat surface. In the process of sucking the lead, the flat surface of the platen can avoid the local collision stress concentration caused by the instantaneous contact between the lead and the flexible suction cup, effectively reducing the possibility of damage or depression when the pole piece hits the platen, effectively protecting the pole piece structural integrity and flatness. In the embodiment in which the pressure plate has at least two air inlet holes, the at least two air inlets are arranged along the width direction of the pole piece, so that when each air inlet port adsorbs the lead, the pressure plate can align the poles in the entire width direction of the pole piece The piece exerts a traction force, thereby reducing the possibility of the pole piece breaking due to uneven force in the width direction. In addition, when one of the air inlets is blocked or there is a gap between the pole piece and the pole piece cannot be applied with adsorption force , the remaining air inlets can still apply suction to the leader, thus ensuring the continuity of the processing process.

Referring to FIG. 2 , the unwinding device 10 according to the embodiment of the present invention further includes a glue sticking component 12 . The gluing assembly 12 is disposed downstream of the unwinding shaft 11 and upstream of the docking assembly 13 . The pulling member 141 moves along a predetermined track at the unwinding position X, the gluing position Y and the to-be-butted position Z under the driving of the driving member. The unwinding device 10 uses the glue sticking assembly 12 to stick the adhesive glue on the tape head at the glue sticking position Y, so as to replace the process of manually sticking the adhesive glue, further replace the manual operation, reduce the labor input in the processing process, and effectively improve the production efficiency and positional accuracy of pasting adhesive.

The gluing assembly 12 in this embodiment includes a supporting platform 121 , a first pressing member 122 and a second pressing member 123 disposed opposite to the supporting platform 121 , and a gluing mechanism 124 . The first pressing member 122 is disposed upstream of the second pressing member 123 . The gluing mechanism 124 is disposed upstream of the first pressing member 122 . A material passing gap is formed between the first pressing member 122 and the second pressing member 123 and the supporting platform 121 respectively. Both the first pressing member 122 and the second pressing member 123 can move close to or away from the supporting platform 121 . The first pressing member 122 and/or the second pressing member 123 can press the tape head at the gluing position Y together with the supporting platform 121 . The glue sticking assembly 12 in this embodiment further includes a first driver connected to the first pressing member 122 and a second driver connected to the second pressing member 123 . The first driver can drive the first pressing member 122 to move closer to or away from the supporting platform 121 , and the second driver can drive the second pressing member 123 to move closer to or away from the supporting platform 121 . In one embodiment, the supporting platform 121, the first pressing member 122, the second pressing member 123, the unwinding shaft 11 and the docking assembly 13 disposed opposite to the supporting platform 121 are all located on the same side of the moving track of the traction member 141, The gluing mechanism 124 is located on the other side of the moving track of the traction member 141 .

When the pulling member 141 pulls the tape head to the gluing position Y, the first pressing member 122 is kept in a raised state, while the second pressing member 123 is pressed down and clamps the tape head with the support platform 121, and then the gluing mechanism 124 aligns the tape head Perform the first gluing action. After the first gluing action is completed, the second pressing member 123 is lifted, and the pulling member 141 pulls the head to move to the position Z to be docked. Then, both the first pressing member 122 and the second pressing member 123 press down and clamp the pole piece with the support platform 121, so as to exert a clamping force on the pole piece and improve the positional stability of the tape head during the gluing process. The gluing mechanism 124 performs a second gluing action on the leader. After the second gluing action is completed, the first pressing member 122 is lifted up, while the second pressing member 123 continues to maintain a downward pressing state. After the adhesive glue pasted on the tape head is bonded with the tape tail of the other material roll 99, the second pressing member 123 is lifted. The tape head and the tape tail of the other material roll 99 continue to be fed in the feeding direction, so that the adhesive on the tape head that has been pasted for the second time will adhere to the tape tail, so that the two are bonded and fixed. In one embodiment, the surface of the support platform 121 facing the first pressing member 122 and the second pressing member 123 is a flat surface, and the surfaces of the first pressing member 122 and the second pressing member 123 facing the supporting platform 121 are Flat surface. In this way, when the first pressing member 122 or the second pressing member 123 and the support platform 121 clamp the pole piece, the stress concentration will not occur on the pole piece, and the first pressing member 122 or the second pressing member 123 will be reduced from the contact with the pole piece. The possibility of damage to the structure of the pole piece when the support platform 121 clamps the pole piece.

The unwinding device 10 of this embodiment further includes a first transmission roller 17 and a second transmission roller 18 . The first drive roller 17 is disposed upstream of the glue assembly 12 and downstream of the unwinding shaft 11 . The second drive roller 18 is disposed downstream of the gluing assembly 12 and upstream of the docking assembly 13 . After the pulling head of the pulling member 141 passes through the first transmission roller 17, the subsequent pole pieces will stick to the first transmission roller 17, so that when the pulling member 141 continues to move the pulling head, the first transmission roller 17 will follow the synchronous rotation, reducing the pole piece. The transmission resistance of the piece also reduces the possibility of the position of the pole piece shifting during the movement of the pole piece. After the traction member 141 pulls the belt head through the second transmission roller 18, the subsequent pole pieces will stick to the second transmission roller 18, so that when the traction member 141 continues to pull the belt head to move, the second transmission roller 18 will follow the synchronous rotation, reducing the pole piece. The transmission resistance of the piece also reduces the possibility of the position of the pole piece shifting during the movement of the pole piece. In the embodiment in which the docking assembly 13 can move from the docking position Z to the docking position, the unwinding device 10 further includes a telescopic mechanism connected with the second transmission roller 18 . The telescopic mechanism can drive the second transmission roller 18 to move synchronously with the docking assembly 13 .

Referring to FIG. 2 , the unwinding device 10 of this embodiment further includes a cutter assembly 16 . The cutter assembly 16 includes a cutter disposed downstream of the first pressing member 122 and upstream of the second pressing member 123 . The support platform 121 is provided with a spaced knife groove corresponding to the cutting knife. The cutter assembly 16 cuts the tape tail of the unwound roll 99 through the cutter. When the material roll 99 installed on the unwinding shaft 11 is about to complete the unwinding process, the first pressing member 122 and the second pressing member 123 simultaneously press down and clamp the tape tail of the material roll 99 together with the supporting platform 121, and start cutting. The knife moves in the direction of extension of the spaced sipe, thereby severing the pole piece. The first pressing member 122 and the second pressing member 123 are lifted up, the cut-off section close to the first pressing member 122 is a waste material section, which is recovered manually, and the cut-off section near the second pressing member 123 is used for The lead of another reel 99 is docked. The cutter assembly 16 also includes a drive mechanism (not shown) connected to the cutter. The drive mechanism can drive the cutter to move linearly.

Referring to FIG. 2 , the unwinding device 10 of this embodiment further includes a tape head detection sensor 15 . The tape head detection sensor 15 is provided at intervals from the unwinding reel 11 . The unwinding device 10 detects and determines whether the tape head is at the unwinding position X through the tape head detection sensor 15 . When the tape head detection sensor 15 detects and judges that the tape head is at the unwinding position X, the pulling member 141 is activated to connect and fix the tape head. When the tape head detection sensor 15 detects and judges that the tape head is not at the unwinding position X, it is necessary to start the unwinding shaft 11 to rotate or manually rotate the material roll 99 to make the tape head be at the unwinding position X. The lead detection sensor 15 can assist the operator to detect the position of the lead, so as to improve the convenience of operation and the degree of automation of the equipment. In one embodiment, the lead detection sensor 15 may be an infrared sensor.

The unwinding device 10 of the embodiment of the present invention includes an unwinding shaft 11 for installing a material roll 99, a butt assembly 13 for abutting the tape head, and a head pulling assembly 14 for pulling the tape head. The pulling member 141 of the head pulling assembly 14 can actively connect the head of the material roll 99 and under the driving action of the driving member, the pulling member 141 can pull the head to the position Z to be docked, and then transfer the head to the docking assembly 13 . Since the tape head can be quickly and accurately positioned at the position Z to be butted by the cooperative operation of the tape head pulling assembly 14 and the docking assembly 13, the unwinding device 10 of the embodiment of the present invention has a high degree of automation and can replace manual connection to a large extent. tape, thereby effectively shortening the time-consuming process of tape splicing and improving production efficiency.

The embodiment of the present invention also provides an unwinding device 20 including at least one unwinding device 10 of the above-mentioned embodiments, so as to improve the automation degree of the unwinding device 20 and improve production efficiency.

In one embodiment, as shown in FIG. 7 , the unwinding device 20 includes two unwinding devices 10 . There is an intermediate dividing line 100 between the two unwinding devices 10 . The two unwinding devices 10 are respectively arranged on both sides of the middle dividing line 100 . Along the direction away from the middle dividing line 100 , the docking assembly 13 and the head pulling assembly 14 included in the two unwinding devices 10 are arranged at intervals. The docking assembly 13 is closer to the intermediate dividing line 100 than the head pulling assembly 14 . The arrangement or arrangement sequence of the same components included in the two unwinding devices 10 with respect to the intermediate boundary line 100 is substantially the same.

The technical solutions of the present invention are described with reference to the states and positions shown in FIGS. 7 to 11 , but do not limit the protection scope of the present invention. The unwinding device 20 of this embodiment includes two unwinding devices 10 . The working process of the unwinding device 20 includes the following steps:

The initial feeding step: manually set the two rolls 99 on the left unwinding shaft 11 and the right unwinding shaft 11; when the right material roll 99 is used as the working material roll 99, the left Roll 99 is a spare roll 99;

Unwinding of the working material roll 99: Start the unwinding device 10 on the right side. When unwinding for the first time, the tape head can be manually pulled to bypass the first drive roller 17 and the second drive roller 18 and be pulled to the downstream processing equipment. Then perform the unwinding operation;

Docking: as shown in FIG. 8 , when the right side of the material roll 99 is nearing completion of unwinding, the left side unwinding device 10 is activated, and the tape head detection sensor 15 detects and judges that the tape head of the material roll 99 is at the unwinding position X, and the pulling member 141 The fixed tape head is connected, and then the pulling member 141 pulls the tape head to move from the unwinding device 10 to the position Z to be docked; as shown in FIG. The gluing assembly 12 performs the first gluing on the predetermined position of the tape head; as shown in FIG. 10 , the pulling member 141 pulls the tape head to move to the position Z to be docked, and applies the glue manually or by using the gluing assembly 12 to the predetermined position of the tape head. Glue the second time, so that two adhesive areas are formed on the tape head; then, the pulling part 141 releases the tape head, and at the same time, the docking assembly 13 is connected to the fixed tape head, and the pulling part 141 returns to the unwinding position X; see FIG. 11 . As shown, the docking assembly 13 drives the tape head to move from the docking position Z to the docking position. At this time, the docking assembly 13 on the right drives the tape tail of the right working material roll 99 to move from the docking position Z to the docking position. Under the joint pressing action of the components 13, the tape head and the tape tail are bonded and fixed; then the left and right docking components 13 return to the position Z to be docked; the tape head of the spare reel 99 and the tape tail of the working reel 99 After the connection is fixed, the left unwinding device 10 continues to unwind, keeping the pole pieces conveyed to the downstream processing equipment continuously;

Loading of the working reel 99: Reinstall the reel 99 on the unwinding shaft 11 on the right, and wait for the lead of the working reel 99 to be docked with the tail of the spare reel 99, so as to continuously transport the pole pieces to the downstream processing equipment;

Loading of the spare roll 99: After the unwinding of the spare roll 99 is completed, reinstall the spare roll 99;

According to the above steps, the unwinding device 20 can automatically perform unwinding and tape splicing actions, and supply the pole pieces continuously. During the processing, the material roll 99 is mainly installed manually, and other processes can basically be automated, thereby reducing the manual dependence of the processing process to a large extent, and also helping to realize the matching of resources for one person to monitor multiple unwinding devices 20 at the same time, and improve production efficiency. and product quality.

In one embodiment, the docking assembly 13 includes a second suction member 132 . The second adsorption part 132 includes a pressing plate having an air inlet. The surface of the pressing plate facing away from the unwinding shaft 11 (ie, the surface facing the middle dividing line 100 ) is a flat surface, and the air inlet is arranged on the flat surface. The flat surfaces of the respective pressing plates of the two docking assemblies 13 disposed on both sides of the intermediate dividing line 100 are parallel to each other. When the pulling member 141 on the left or right pulls the belt head to the position Z to be docked, the pulling member 141 on the left or right is located between the two docking assemblies 13 and is in a position with the corresponding docking assembly 13 on the left or right Corresponding. In one embodiment, the surface of the support platform 121 in the unwinding device 10 for supporting the pole pieces is tangent to the outer peripheral surface of the first transmission roller 17 and the outer peripheral surface of the second transmission roller 18 and is perpendicular to the intermediate dividing line 100 . The flat surface of the pressing plate is tangent to the outer peripheral surface of the second transmission roller 18 and parallel to the middle dividing line 100 .

The unwinding device 20 of the embodiment of the present invention further includes an edge alignment detection sensor 21 arranged at intervals from the docking assembly 13 . From the state and position shown in FIG. 7 , the edge alignment detection sensor 21 is located below the docking assembly 13 . The unwinding device 20 detects and judges that the edges of the two reels 99 are aligned by the edge alignment detection sensor 21, so as to ensure that the tape heads and tape tails of the two reels 99 can be accurately aligned with each other when they are butted, and reduce the positional misalignment of the two in the width direction. The possibility of shifting, thereby reducing the scrapping of the pole pieces caused by the asymmetrical forming of the left and right pole tabs after the pole piece is punched by the die due to the misalignment of the lead and the tail. belt possibility. In one embodiment, the edge alignment detection sensor 21 may be an infrared sensor.

The unwinding device 20 of this embodiment further includes a support plate 22 . The support plate 22 has a first escape hole 221 corresponding to the predetermined trajectory of the pulling member 141 and a second escape hole 222 corresponding to the docking assembly 13 . The first escape hole 221 and the second escape hole 222 communicate with each other at the position Z to be docked. The first escape hole 221 has a guiding and limiting effect on the traction member 141 . The middle dividing line 100 divides the second giving way hole 222 into two parts, from the state and position shown in FIG. The moving stroke of the docking assembly 13 on the right side may be greater than the moving stroke of the docking assembly 13 on the right side. In the embodiment in which the unwinder 10 includes the second drive roller 18 , the second drive roller 18 protrudes from the second escape hole 222 .

The unwinding device 20 of the embodiment of the present invention further includes two third drive rollers 23 and one guide roller 24 . The two third transmission rollers 23 are arranged at intervals. A material passing gap is formed between the two third transmission rollers 23 . Two third drive rollers 23 are arranged downstream of the docking assembly 13 . The guide roller 24 is provided downstream of the third transmission roller 23 . When the unwinding device 10 on the left is unwinding, the pole piece is conveyed to the downstream processing equipment around the third driving roller 23 and the guide roller 24 on the left. When the unwinding device 10 on the right is unwinding, the pole piece is conveyed to the downstream processing equipment around the third driving roller 23 and the guide roller 24 on the right. The third transmission roller 23 and the guide roller 24 can improve the stability of pole piece transportation.

The unwinding device 20 of the embodiment of the present invention includes an unwinding device 10 capable of performing unwinding and tape splicing operations. The unwinding device 10 can quickly perform the unwinding action and accurately position the tape head at the position Z to be docked through the cooperative operation of the lead pulling assembly 14 and the docking assembly 13, thereby improving the automation of the processing process and replacing manual tape splicing to a large extent. This effectively shortens the time-consuming process of tape splicing and improves production efficiency.

While the invention has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for parts thereof without departing from the scope of the invention, in particular, so long as there are no Structural conflicts, the technical features mentioned in each embodiment can be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (14)

1. The utility model provides an unwinding device which characterized in that includes:

the unwinding shaft is used for mounting a material roll with a head and a tail;

the unwinding device fixes the tape head through the butt joint assembly and enables the tape head to be in a state to be butted;

the tape head traction assembly comprises a driving part and a traction part, wherein the driving part is connected with the traction part and can drive the traction part to move at an unreeling position and a to-be-butted position along a preset track, the traction part is connected with the tape head at the unreeling position, the traction part releases the tape head at the to-be-butted position, and the butt joint assembly fixes the released tape head.

2. The unwinding device as claimed in claim 1, wherein the drawing member includes a first bracket and a pneumatic first suction member connected to the first bracket, the first bracket is connected to the driving member, the first suction member is spaced from the unwinding shaft in a radial direction of the unwinding shaft, and the drawing member sucks the tape head at the unwinding position through the first suction member.

3. Unwinding device according to claim 2, characterised in that the first suction means comprise a flexible suction cup having a suction opening, which suction cup, in the unwinding position, sucks the leader through the suction opening.

4. The unwinding device of claim 1, further comprising a tape head detection sensor, wherein the tape head detection sensor is spaced from the unwinding shaft, and the unwinding device detects and judges whether the tape head is located at the unwinding position through the tape head detection sensor.

5. The unwinding device as claimed in claim 1, wherein the docking assembly includes a driving unit, a second bracket connected to the driving unit, and a pneumatic second suction member connected to the second bracket, the second suction member is spaced from the unwinding shaft along a radial direction of the unwinding shaft, the docking assembly sucks the tape head at the position to be docked through the second suction member, and the docking assembly drives the second bracket and the second suction member to move between the position to be docked and the docking position through the driving unit.

6. The unwinding device as claimed in claim 5, wherein the second suction member includes a pressure plate having an air inlet, and the pressure plate sucks the tape head through the air inlet.

7. The unwinding device as claimed in claim 1, further comprising a tape adhering component, wherein the tape adhering component is disposed at a downstream of the unwinding shaft and at an upstream of the docking component, the traction component is driven by the driving component to move along the predetermined track at the unwinding position, the tape adhering position and the position to be docked, and the unwinding device adheres the tape head at the tape adhering position with the tape adhering component by using the tape adhering component.

8. The unwinding device of claim 7, wherein the rubberizing assembly includes a support platform, a first pressing member and a second pressing member disposed opposite to the support platform, and a rubberizing mechanism, the rubberizing mechanism is disposed upstream of the first pressing member, the first pressing member is disposed upstream of the second pressing member, material passing gaps are respectively formed between the first pressing member and the support platform and between the first pressing member and the second pressing member and the support platform, and the first pressing member and the second pressing member can move close to or away from the support platform to press the tape head at the rubberizing position together with the support platform.

9. The unwinding device as claimed in claim 8, further comprising a cutter assembly, wherein the cutter assembly includes a cutter disposed downstream of the first pressing member and upstream of the second pressing member, the support platform has a relief slot corresponding to the cutter, and the cutter assembly cuts the tape tail through the cutter.

10. The unwinding device as claimed in claim 7, further comprising a first driving roller and a second driving roller, wherein the first driving roller is disposed upstream of the rubberizing assembly and downstream of the unwinding shaft, and the second driving roller is disposed downstream of the rubberizing assembly and upstream of the docking assembly.

11. Unwinding device, characterized in that it comprises at least one unwinding device according to any one of claims 1 to 10.

12. The unwinding apparatus of claim 11, wherein the unwinding apparatus comprises two unwinding devices, a middle dividing line is formed between the two unwinding devices, the two unwinding devices are respectively disposed at two sides of the middle dividing line, and the docking assemblies and the tape head pulling assembly included in the two unwinding devices are arranged at intervals along a direction away from the middle dividing line, and the docking assemblies are close to the middle dividing line.

13. The unwinding device of claim 12, further comprising an edge alignment detection sensor spaced apart from the docking assembly, wherein the unwinding device determines edge alignment of the two rolls through the edge alignment detection sensor.

14. The unwinding apparatus according to claim 12, further comprising a support plate, wherein the support plate has a first hole corresponding to the predetermined track of the drawing member and a second hole corresponding to the docking assembly, the first hole and the second hole are communicated at the position to be docked, the unwinding apparatus further comprises two third driving rollers and a guide roller, the two third driving rollers are spaced apart from each other, a material passing gap is formed between the two third driving rollers, and the guide roller is disposed downstream of the third driving rollers.