Unwinding mechanism

Abstract

The utility model discloses an unwinding mechanism, comprising: an unwinding shaft, which is driven to rotate around its own axis. A shaft sleeve, which is used to place a material roll, is sleeved on the outer surface of the unwinding shaft, and is connected to the unwinding shaft through at least one guide component, and the shaft sleeve can rotate with the rotation of the unwinding shaft under the action of the guide component. An adjusting component comprises a screw and a first limit plate sleeved on the outer surface of the screw, the screw is threadedly connected to the unwinding shaft, the first limit plate is fixedly connected to the shaft sleeve, and the screw can drive the shaft sleeve to move along the axial direction. The unwinding mechanism of the utility model adjusts the shaft sleeve to move axially relative to the unwinding shaft through the adjusting component, thereby changing the position of the material roll, so as to improve the versatility of the unwinding mechanism.

Description

Technical Field

[0001] The utility model belongs to the field of lithium battery automation equipment, and in particular relates to an unwinding mechanism. Background Art

[0002] In the production process of cylindrical battery cells, the unwinding mechanism plays a vital role. It is responsible for accurately and stably unwinding material rolls such as pole pieces, diaphragms and tapes to ensure the winding quality and production efficiency of the battery cells.

[0003] However, the current unwinding mechanism design generally has the problem of insufficient versatility. When the size of the material roll changes, the unwinding mechanism is often unable to flexibly adjust the position of the material roll, which not only limits the flexibility of the production line, but also increases production costs and cycles. Utility Model Content

[0004] The utility model aims to provide an unwinding mechanism which can improve the versatility of the unwinding mechanism.

[0005] To achieve the above purpose, the unwinding mechanism of the utility model comprises:

[0006] The unwinding shaft is driven to rotate around its own axis;

[0007] A shaft sleeve, used for placing the material roll, connected to the unwinding shaft through at least one guide assembly, wherein the shaft sleeve can rotate with the rotation of the unwinding shaft and can move in the axial direction under the restriction of the guide assembly;

[0008] The adjusting assembly comprises a screw and a first limiting disk sleeved on the outer surface of the screw, the screw is threadedly connected to the unwinding shaft, the first limiting disk is fixedly connected to the sleeve, and the screw can drive the sleeve to move along the axial direction.

[0009] In one embodiment of the unwinding mechanism of the utility model, the guide assembly includes a slide groove and a pin matching the slide groove, the slide groove is arranged on the unwinding shaft and extends in the axial direction, and the pin penetrates the side wall of the sleeve in a direction perpendicular to the axial direction and extends into the slide groove.

[0010] In one embodiment of the unwinding mechanism of the utility model, the guide assembly also includes a groove arranged on the outer surface of the sleeve, two through holes are arranged in the groove, the pin passes through the side wall of the sleeve through one through hole, and a bolt is arranged in the other through hole, and the nut of the bolt fixes the pin in the groove.

[0011] In one embodiment of the unwinding mechanism of the utility model, the guide assembly includes a slide groove and a pin matching the slide groove, the slide groove is arranged on the sleeve and extends in the axial direction, and the pin is arranged on the unwinding shaft and extends into the slide groove in a direction perpendicular to the axial direction.

[0012] In one embodiment of the unwinding mechanism of the utility model, the outer surface of the first limiting disk is threadedly connected with the first locking disk, a first baffle is arranged between the first limiting disk and the first locking disk, the other end of the sleeve is sleeved with a second limiting disk and a second locking disk, a second baffle is arranged between the second limiting disk and the second locking disk, and the material roll is arranged between the first baffle and the second baffle.

[0013] In an embodiment of the unwinding mechanism of the present invention, the thread direction of the first locking disk is opposite to the unwinding direction of the unwinding mechanism.

[0014] In one embodiment of the unwinding mechanism of the utility model, the adjustment component also includes a locking piece and a numerical display meter which are sleeved on the outer surface of the screw. The first limit plate, the locking piece and the numerical display meter are all fixedly connected and arranged in sequence along the axial direction of the screw. The free end of the screw is provided with a handle.

[0015] In an embodiment of the unwinding mechanism of the utility model, a connecting block is provided at one end of the unwinding shaft connected to the screw rod, the connecting block is fixedly connected to the unwinding shaft, and the connecting block is provided with a thread matching the screw rod.

[0016] The utility model also discloses another unwinding mechanism, comprising:

[0017] The unwinding shaft is driven to rotate around its own axis;

[0018] A shaft sleeve, used for placing the material roll, connected to the unwinding shaft through at least one guide assembly, wherein the shaft sleeve can rotate with the rotation of the unwinding shaft and can move in the axial direction under the restriction of the guide assembly;

[0019] The adjusting assembly comprises a screw and a first limiting disk sleeved on the outer surface of the screw, wherein the screw is threadedly connected to the unwinding shaft, the first limiting disk is fixedly connected to the sleeve, and the screw can drive the sleeve to move along the axial direction;

[0020] The guide assembly includes a slide groove and a pin matched with the slide groove, the slide groove is arranged on the shaft sleeve and extends in the axial direction, and the pin is arranged on the unwinding shaft and extends into the slide groove in a direction perpendicular to the axial direction.

[0021] The utility model also discloses another unwinding mechanism, comprising:

[0022] The unwinding shaft is driven to rotate around its own axis;

[0023] A shaft sleeve, used for placing the material roll, connected to the unwinding shaft through at least one guide assembly, wherein the shaft sleeve can rotate with the rotation of the unwinding shaft and can move in the axial direction under the restriction of the guide assembly;

[0024] The adjusting assembly comprises a screw and a first limiting disk sleeved on the outer surface of the screw, wherein the screw is threadedly connected to the unwinding shaft, the first limiting disk is fixedly connected to the sleeve, and the screw can drive the sleeve to move along the axial direction;

[0025] The guide assembly includes a slide groove and a pin matched with the slide groove, the slide groove is arranged on the unwinding shaft and extends in the axial direction, and the pin penetrates the side wall of the sleeve in a direction perpendicular to the axial direction and extends into the slide groove.

[0026] In summary, the unwinding mechanism of the utility model adjusts the axial movement of the shaft sleeve relative to the unwinding shaft through the adjusting component, thereby changing the position of the material roll to improve the versatility of the unwinding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of an embodiment of the unwinding mechanism of the utility model;

[0028] Figure 2 yes Figure 1 Section view along AA;

[0029] In the figure: 100, large plate; 200, unwinding shaft; 210, connecting block;

[0030] 300, shaft sleeve; 310, second limiting plate; 311, guide surface; 320, second baffle; 330, second locking plate;

[0031] 400, adjustment assembly; 410, screw; 411, threaded end; 412, mounting end; 413, step surface; 420, first limit plate; 430, first locking plate; 440, first baffle; 450, locking member; 460, numerical display table; 470, handle;

[0032] 500, material roll; 600, tension control component; 700, guide assembly; 710, slide groove; 720, pin; 730, groove; 740, through hole. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0034] like Figure 1As shown, the unwinding mechanism is installed on a large plate 100, including an unwinding shaft 200, a sleeve 300, an adjustment component 400 and a material roll 500. The unwinding shaft 200 is arranged vertically on the large plate 100 and is rotatably connected to the large plate 100 through a bearing. One end of the unwinding shaft 200 passes through the large plate 100 and is connected to a tension control component 600, which is used to control the constant tension of the unwinding of the material roll 500. The tension control component 600 is preferably a magnetic powder tension control component. The outer surface of the other end of the unwinding shaft 200 is sleeved with a sleeve 300, and the sleeve 300 is connected to the unwinding shaft 200 through a guide component 700. Under the restriction of the guide component 700, the sleeve 300 can rotate with the rotation of the unwinding shaft 200 and can move in the axial direction. The adjustment component 400 is arranged at one end of the sleeve away from the large plate 100, driving the sleeve 300 to move in the axial direction and adjusting the position of the sleeve 300 in the axial direction. A material roll 500 is disposed on the outer sleeve 300. The material roll 500 is unwound as the sleeve 300 rotates. The axial position of the material roll 500 is changed as the adjustment component 400 is adjusted. When changing the type (changing the material roll 500 to different width sizes), the position of the material roll 500 is easy to adjust, thereby improving versatility.

[0035] In this embodiment, the sleeve 300 can rotate with the rotation of the unwinding shaft 200 and can move axially under the restriction of the guide assembly 700. The structure of the guide assembly 700 is as follows: it includes a slide groove 710 and a pin 720 matched with the slide groove 710, and the slide groove 710 is arranged on the outer surface of the unwinding shaft 200 and extends in the axial direction. The pin 720 penetrates the side wall of the sleeve 300 in a direction perpendicular to the axial direction and extends into the slide groove 710. The outer surface of the sleeve 300 is provided with a groove 730, and two through holes 740 penetrating the outer wall of the sleeve 300 are arranged in the groove 730. The pin 720 penetrates one of the through holes 740, and a bolt is arranged in the other through hole 740, and the nut of the bolt fixes the pin 720 in the groove 730. Two guide assemblies 700 are arranged along the axial direction of the unwinding shaft 200. In other embodiments, the number of guide assemblies 700 can be increased or decreased, and the position of the guide assemblies 700 can be changed according to the length and diameter of the unwinding shaft 200.

[0036] In this embodiment, the slide groove 710 is arranged on the outer surface of the unwinding shaft 200, and the pin 720 is arranged on the shaft sleeve 300. In other embodiments, the slide groove 710 can also be arranged on the inner surface of the shaft sleeve 300, and the pin 720 can be arranged on the unwinding shaft 200. The positions of the slide groove 710 and the pin 720 can be changed, as long as the slide groove 710 and the pin 720 can be arranged relative to each other and the pin 720 can slide in the slide groove 710.

[0037] The adjustment assembly 400 includes a screw rod 410 and a first limiting disk 420 sleeved on the outer surface of the screw rod 410. One end of the screw rod 410 is threadedly connected to the unwinding shaft 200, and rotating the screw rod 410 can adjust the position of the screw rod 410 in the axial direction. The first limiting disk 420 is fixedly connected to the end of the sleeve 300 away from the large plate 100. The screw rod 410 has a threaded end 411 and a mounting end 412. The outer surface of the threaded end 411 is provided with a thread for threaded connection with the unwinding shaft 200. The mounting end 412 is used to install the first limiting disk 420. The diameter of the threaded end 411 is larger than the diameter of the mounting end 412. An annular step surface 413 is formed at the connection between the threaded end 411 and the mounting end 412, which is used to push the first limiting disk 420 during the axial movement of the screw rod 410, thereby driving the sleeve 300 to move axially.

[0038] In other embodiments, an annular step surface 413 may be provided on both sides of the first limiting plate 420 and on the outer surface of the mounting end 412 to drive the first limiting plate 420 to move axially. The annular step surface 413 provided on the side of the first limiting plate 420 away from the sleeve 300 may be formed by an annular ring and the mounting end 412, and the annular ring is tightened on the mounting end 412 by a top screw, and the annular ring is fixedly installed on the mounting end 412. The first limiting plate 420 is sleeved on the mounting end 412, and does not rotate with the rotation of the screw 410, and does not affect the rotation of the sleeve 300.

[0039] The adjusting assembly 400 drives the sleeve 300 to move via the screw rod 410 , and has a simple structure and is easy to adjust.

[0040] The screw 410 can be directly or indirectly threadedly connected to the unwinding shaft 200. The unwinding shaft 200 is a cylindrical structure, and a connecting block 210 is provided at one end of the unwinding shaft 200 close to the screw 410. The connecting block 210 is annular, and the connecting block 210 is fixedly connected to the end of the unwinding shaft 200 by screws. The inner wall of the connecting block 210 is provided with threads for connecting to the threaded end 411 of the screw 410. The connecting block 210 is installed on the unwinding shaft 200 by screws, which is convenient for disassembly and easy to replace after the threads on the inner wall of the connecting block 210 are worn.

[0041] The outer wall of the first limiting plate 420 is threadedly connected with the first locking plate 430 , a first baffle 440 is arranged between the first limiting plate 420 and the first locking plate 430 , and the first baffle 440 is locked between the first limiting plate 420 and the first locking plate 430 through the first locking plate 430 .

[0042] The outer surface of the sleeve 300 near one end of the large plate 100 is sleeved with a second limiting plate 310, a second baffle 320 and a second locking plate 330, and the second baffle 320 is located between the second limiting plate 310 and the second locking plate 330. The second limiting plate 310, the second baffle 320 and the second locking plate 330 are fixed as a whole in the axial direction by multiple screws. The second locking plate 330 is a clamp, and the second locking plate 330 is locked to the sleeve 300 by screws. When replacing the roll 500 of different widths, the first locking plate 430 is used as a reference, the second locking plate 330 is loosened, and the second locking plate 330 is moved, thereby changing the distance between the first baffle 440 and the second baffle 320. After moving to a suitable position, the second locking plate 330 is locked to the sleeve 300.

[0043] The opposing surfaces of the first limiting plate 420 and the second limiting plate 310 are both provided with guide surfaces 311 , so as to guide the inner wall of the material roll 500 to the outer surface of the first limiting plate 420 and the second limiting plate 310 to fix the material roll 500 .

[0044] The mounting end 412 of the screw 410 is also sleeved with a locking member 450 and a numerical display meter 460. The first limiting plate 420, the locking member 450, and the numerical display meter 460 are all fixedly connected and arranged in sequence along the axial direction of the screw 410. A handle 470 is arranged at the end of the screw 410, and the rotation of the screw 410 is adjusted by the handle 470. The locking member 450 is also a clamp. When adjusting the position of the material roll 500 along the axial direction, the locking member 450 is loosened, and the screw 410 is rotated by the handle 470 to approach or move away from the unwinding shaft 200, and the first limiting plate 420 is driven to approach or move away from the unwinding shaft 200 through the step surface 413, thereby changing the position of the material roll 500. After moving into place, the locking member 450 clamps the mounting end 412 of the screw 410. The numerical display meter 460 can accurately measure the moving distance of the screw 410.

[0045] When the material roll 500 is unwound, the material roll 500 has a friction force on the first baffle 440, and the first baffle 440 has a friction force on the first locking disk 430. The thread direction of the first locking disk 430 is opposite to the rotation direction of the first baffle 440 when unwound, preventing the first locking disk 430 from loosening when unwound.

[0046] The above embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in this technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A reeling mechanism, characterized in that: include: The unwinding shaft is driven to rotate around its own axis; A shaft sleeve, used for placing the material roll, connected to the unwinding shaft through at least one guide assembly, wherein the shaft sleeve can rotate with the rotation of the unwinding shaft and can move in the axial direction under the restriction of the guide assembly; The adjusting assembly comprises a screw and a first limiting disk sleeved on the outer surface of the screw, the screw is threadedly connected to the unwinding shaft, the first limiting disk is fixedly connected to the sleeve, and the screw can drive the sleeve to move along the axial direction.

2. The unwinding mechanism according to claim 1, characterized in that: The guide assembly comprises a slide groove and a pin matched with the slide groove, the slide groove is arranged on the unwinding shaft and extends in the axial direction, and the pin penetrates the side wall of the sleeve in a direction perpendicular to the axial direction and extends into the slide groove.

3. The unwinding mechanism according to claim 2, characterized in that: The guide assembly also includes a groove arranged on the outer surface of the sleeve, and two through holes are arranged in the groove. The pin passes through the side wall of the sleeve through one through hole, and a bolt is arranged in the other through hole. The nut of the bolt fixes the pin in the groove.

4. The unwinding mechanism according to claim 1, characterized in that: The guide assembly comprises a slide groove and a pin matched with the slide groove, wherein the slide groove is arranged on the shaft sleeve and extends in the axial direction, and the pin is arranged on the unwinding shaft and extends into the slide groove in a direction perpendicular to the axial direction.

5. The unwinding mechanism according to claim 1, characterized in that: The outer surface of the first limiting plate is threadedly connected with a first locking plate, a first baffle is arranged between the first limiting plate and the first locking plate, the other end of the shaft sleeve is sleeved with a second limiting plate and a second locking plate, a second baffle is arranged between the second limiting plate and the second locking plate, and the material roll is arranged between the first baffle and the second baffle.

6. The unwinding mechanism according to claim 5, characterized in that: The thread direction of the first locking disk is opposite to the unwinding direction of the unwinding mechanism.

7. The unwinding mechanism according to claim 1, characterized in that: The adjustment component also includes a locking piece and a numerical display meter sleeved on the outer surface of the screw. The first limit plate, the locking piece and the numerical display meter are all fixedly connected and arranged in sequence along the axial direction of the screw. The free end of the screw is provided with a handle.

8. The unwinding mechanism according to claim 1, characterized in that: One end of the unwinding shaft connected to the screw rod is provided with a connecting block, the connecting block is fixedly connected to the unwinding shaft, and the connecting block is provided with a thread matched with the screw rod.

9. A reeling mechanism, characterized in that: include: The unwinding shaft is driven to rotate around its own axis; A shaft sleeve, used for placing the material roll, connected to the unwinding shaft through at least one guide assembly, wherein the shaft sleeve can rotate with the rotation of the unwinding shaft and can move in the axial direction under the restriction of the guide assembly; The adjusting assembly comprises a screw and a first limiting disk sleeved on the outer surface of the screw, wherein the screw is threadedly connected to the unwinding shaft, the first limiting disk is fixedly connected to the sleeve, and the screw can drive the sleeve to move along the axial direction; The guide assembly includes a slide groove and a pin matched with the slide groove, the slide groove is arranged on the shaft sleeve and extends in the axial direction, and the pin is arranged on the unwinding shaft and extends into the slide groove in a direction perpendicular to the axial direction.

10. A reeling mechanism, characterized in that: include: The unwinding shaft is driven to rotate around its own axis; A shaft sleeve, used for placing the material roll, connected to the unwinding shaft through at least one guide assembly, wherein the shaft sleeve can rotate with the rotation of the unwinding shaft and can move in the axial direction under the restriction of the guide assembly; The adjusting assembly comprises a screw and a first limiting disk sleeved on the outer surface of the screw, wherein the screw is threadedly connected to the unwinding shaft, the first limiting disk is fixedly connected to the sleeve, and the screw can drive the sleeve to move along the axial direction; The guide assembly includes a slide groove and a pin matched with the slide groove, the slide groove is arranged on the unwinding shaft and extends in the axial direction, and the pin penetrates the side wall of the sleeve in a direction perpendicular to the axial direction and extends into the slide groove.

Images