A winding correction mechanism

Abstract

The utility model specifically relates to a winding correction mechanism, which belongs to the technical field of coating winding equipment. The winding correction mechanism is applied to the pole piece material winding equipment, and the pole piece material winding equipment includes a winding roller, and the winding correction mechanism includes a pressure roller, a support part and a driving component. The pressure roller includes a roller body and a flexible airbag sleeved on the outer wall of the roller body, the roller body and the winding roller are arranged at intervals, and the axis of the roller body is parallel to the axis of the winding roller. The support part is rotatably connected to the pole piece material winding equipment, and the rotation axis of the support part is parallel to the axis of the winding roller. The support part is provided with two, and the two support parts are respectively provided on both sides of the axial direction of the roller body, and the roller body is rotatably connected to the two support parts. The driving component is used to drive the support part to rotate. The pressure roller is used to apply pressure to the pole piece material wound on the winding roller. Under the action of the pressure, the risk of wrinkles when the pole piece material is wound is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating and winding equipment, and in particular relates to a winding deviation correction mechanism. Background Art

[0002] In recent years, coating and winding machines have been widely used in the production of lithium battery pole sheet materials. They are an indispensable part of pole sheet material production. In general, coating and winding machines are a type of equipment that winds pole sheet materials on rollers, where the pole sheet materials are long thin sheets that are wound at a certain speed. Due to the speed, if the forces on both sides are uneven, wrinkles and offset winding are very likely to occur. In long-term production, the wound pole sheet materials will not be aligned, resulting in wrinkles, which will greatly hinder the production of pole sheet materials and even directly affect the performance of lithium batteries. In general, manufacturers increase the tension of the pole sheet material so that the pole sheet material can be tightened to reduce wrinkles during winding. However, this method causes the pole sheet material to be subjected to tension, increasing the risk of damage to the pole sheet material. Utility Model Content

[0003] The utility model aims to provide a winding deviation correction mechanism, which can reduce the risk of wrinkles when the pole piece material is wound.

[0004] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: the embodiment of the present application provides a winding and correcting mechanism, which is applied to the pole piece material winding device. The pole piece material winding device includes a winding roller, including a pressure roller, a support part and a driving component. The pressure roller includes a roller body and a flexible airbag sleeved on the outer wall of the roller body. The roller body and the winding roller are arranged at intervals, and the axis of the roller body is parallel to the axis of the winding roller. The support part is rotatably connected to the pole piece material winding device, and the rotation axis of the support part is parallel to the axis of the winding roller. The support part is provided in two, and the two support parts are respectively provided on both sides of the axial direction of the roller body, and the roller body is rotatably connected to the two support parts. The driving component is used to drive the support part to rotate.

[0005] In some embodiments, the driving component includes a cylinder, a cylinder body of the cylinder is rotatably connected to the pole piece material winding device, and a telescopic end of the cylinder is rotatably connected to the support portion.

[0006] In some embodiments, two cylinders are provided corresponding to the supporting parts, and the two cylinders are respectively provided on opposite sides of the two supporting parts.

[0007] In some embodiments, the pressure roller further includes a support ring, which is sleeved outside the peripheral wall of the roller body. A recessed portion is provided on the peripheral wall surface of the support ring around the circumference of the support ring, and the flexible airbag is accommodated in the recessed portion.

[0008] In some embodiments, the flexible airbag is provided with an air inlet channel, which is communicated with a side of the flexible airbag facing the roller body.

[0009] In some embodiments, the flexible airbag is provided with an air inlet channel, the air inlet channel is connected to a side of the flexible airbag facing the roller body, and the bottom wall of the recessed portion is provided with a receiving groove, and the air inlet channel is received in the receiving groove.

[0010] In some embodiments, the recessed portion is provided with a pressing portion, the flexible airbag and the pressing portion are arranged along the axial direction of the roller body, and the pressing portion is movably provided on the supporting ring along the axial direction of the roller body.

[0011] In some embodiments, the extrusion portion is sleeved on the support ring, and the extrusion portion is threadedly connected to the support ring.

[0012] In some embodiments, along the axial direction of the roller body, the circumferential wall of the roller body is provided with positioning bosses and positioning ring grooves at intervals, the positioning ring grooves are arranged around the circumferential wall surface of the roller body, the roller body is provided with a clamping ring, the clamping ring is an incomplete circular ring structure, the clamping ring is clamped in the positioning ring groove, and the support ring is arranged between the clamping ring and the positioning boss.

[0013] In some embodiments, the thickness of the clasp gradually increases from the ends of the clasp to the middle of the clasp.

[0014] The utility model has the following beneficial effects:

[0015] 1. The pressure roller is used to apply pressure to the pole piece material wound on the winding roller. Under the action of pressure, the risk of wrinkles when the pole piece material is wound is reduced.

[0016] 2. The flexible airbag reduces the risk of the pole piece material being scratched when the pressure roller applies pressure to the pole piece material. On the other hand, as the winding roller gradually winds up the pole piece material, the diameter of the cylindrical structure formed by the winding roller and the pole piece material increases. At this time, the flexible airbag can play a buffering role, reducing the risk of damage to the driving component under the push of the reaction force exerted on the support part.

[0017] 3. The pressure roller is rotatably connected to the support part, so that the pressure roller can rotate together with the winding roller, reducing the risk of scratching the pole piece material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the winding and deviation-correcting mechanism of the utility model;

[0019] Figure 2 It is a schematic diagram of the relative positions of the support part and the winding roller of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the pressing roller of the utility model;

[0021] Figure 4It is a structural schematic diagram of the clamping ring of the utility model.

[0022] Figure numbers: 1-winding roller, 2-support part, 3-cylinder, 4-pole material winding device, 5-pressure roller, 6-roller body, 7-support ring, 8-extrusion part, 9-flexible airbag, 10-air inlet channel, 11-positioning boss, 12-accommodating groove, 13-recessed part, 14-clamping ring, 15-annular ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0024] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] See also Figure 1 , Figure 2 and Figure 3 , the embodiment of the present application provides a winding correction mechanism, which is applied to the pole piece material winding device 4, and the pole piece material winding device 4 includes a winding roller 1, including a pressure roller 5, a support part 2 and a driving component. The pressure roller 5 includes a roller body 6 and a flexible airbag 9 sleeved on the outer wall of the roller body 6. The roller body 6 and the winding roller 1 are arranged at intervals, and the axis of the roller body 6 is parallel to the axis of the winding roller 1. The support part 2 is rotatably connected to the pole piece material winding device 4, and the rotation axis of the support part 2 is parallel to the axis of the winding roller 1. The support part 2 is provided in two, and the two support parts 2 are respectively provided on both sides of the axial direction of the roller body 6, and the roller body 6 is rotatably connected to the two support parts 2. The driving component is used to drive the support part 2 to rotate.

[0026] The winding roller 1 of the pole piece material winding device 4 is used to wind up the pole piece material.

[0027] The pressure roller 5 is used to apply pressure to the pole piece material wound on the winding roller 1. Under the effect of the pressure, the risk of wrinkles when the pole piece material is wound is reduced.

[0028] The flexible airbag 9 provided on the pressure roller 5 is the part where the pressure roller 5 contacts the pole piece material. The flexible airbag 9 contains gas, so that the flexible airbag 9 can expand. On the one hand, the flexible airbag 9 reduces the risk of scratching the pole piece material when the pressure roller 5 applies pressure to the pole piece material. On the other hand, as the winding roller 1 gradually winds up the pole piece material, the diameter of the cylindrical structure formed by the winding roller 1 and the pole piece material increases. At this time, the flexible airbag 9 can play a buffering role, reducing the risk of damage to the driving component under the push of the reaction force exerted on the support part 2.

[0029] The pressing roller 5 is rotatably connected to the supporting portion 2 , so that the pressing roller 5 can rotate together with the winding roller 1 , thereby reducing the risk of scratching the pole piece material.

[0030] The support part 2 is rotatably connected to the pole piece material winding device 4, so that when the support part 2 rotates, the distance between the pressure roller 5 and the winding roller 1 can be adjusted, and thus the pressure of the pressure roller 5 on the pole piece material can also be adjusted.

[0031] The driving component is used to drive the support part 2 to rotate so that the pressing roller 5 can be pressed tightly against the pole piece material.

[0032] Two support parts 2 are provided, and the two axial sides of the pressure roller 5 can be rotatably connected to the support parts 2 , thereby increasing the supporting effect of the support parts 2 on the pressure roller 5 .

[0033] In some embodiments, the driving component includes a cylinder 3 , a cylinder body of the cylinder 3 is rotatably connected to the pole piece material winding device 4 , and a telescopic end of the cylinder 3 is rotatably connected to the support part 2 .

[0034] The structure and working principle of the cylinder 3 are well known to those skilled in the art and will not be described in detail here.

[0035] When the telescopic end of the cylinder 3 is extended or retracted, the telescopic end can drive the support part 2 to rotate, thereby achieving the purpose of driving the support part 2 to rotate.

[0036] See also Figure 1 In some embodiments, two cylinders 3 are provided corresponding to the supporting parts 2 , and the two cylinders 3 are respectively provided on opposite sides of the two supporting parts 2 .

[0037] The opposite side of the support portion 2 refers to the side where the two support portions 2 are away from each other.

[0038] The cylinder 3 is arranged on the opposite side of the support portion 2, which reduces the risk of the cylinder 3 hindering the movement of the pole piece material.

[0039] Two cylinders 3 are provided, and the two support parts 2 are driven to rotate by the corresponding cylinders 3 respectively, which makes the pressure applied by the pressure roller 5 to the pole piece material more uniform on the one hand, and increases the maximum pressure value that the pressure roller 5 can apply to the pole piece material on the other hand.

[0040] See also Figure 3 In some embodiments, the pressure roller 5 further includes a support ring 7, which is sleeved on the peripheral wall of the roller body 6. A recess 13 is provided on the peripheral wall of the support ring 7 around the circumference of the support ring 7, and the flexible airbag 9 is accommodated in the recess 13.

[0041] The recessed portion 13 of the support ring 7 is used to accommodate the flexible airbag 9 , so as to facilitate fixing the flexible airbag 9 to the support ring 7 .

[0042] The flexible airbag 9 is sleeved on the roller body 6 through the support ring 7, so that the flexible airbag 9 is easily installed on the roller body 6. Furthermore, by axially positioning the support ring 7, the flexible airbag 9 is easily positioned in the axial direction of the roller body 6.

[0043] See also Figure 3 In some embodiments, the flexible airbag 9 is provided with an air inlet channel 10 , and the air inlet channel 10 is connected to a side of the flexible airbag 9 facing the roller body 6 .

[0044] The air inlet channel 10 is used to inflate and deflate the flexible airbag 9 so that the flexible airbag 9 can be retracted or expanded.

[0045] The air intake passage 10 may be provided with a valve so that the air intake passage 10 may be opened or closed.

[0046] The air inlet channel 10 is connected to the side of the flexible airbag 9 facing the roller body 6, so that the outer peripheral wall of the flexible airbag 9 can be smooth without protrusions, thereby increasing the pressure effect of the flexible airbag 9 on the pole piece material.

[0047] See also Figure 3 In some embodiments, the flexible airbag 9 is provided with an air inlet channel 10 , which is connected to the side of the flexible airbag 9 facing the roller body 6 , and the bottom wall of the recessed portion 13 is provided with a receiving groove 12 , in which the air inlet channel 10 is received.

[0048] The receiving groove 12 is used for laying the air intake channel 10 . On the one hand, it is convenient to guide the air intake channel 10 to a designated position. On the other hand, it reduces the risk of uneven expansion of the flexible airbag 9 due to squeezing of the air intake channel 10 .

[0049] See also Figure 3 In some embodiments, the recessed portion 13 is provided with an extrusion portion 8 , the flexible airbag 9 and the extrusion portion 8 are arranged along the axial direction of the roller body 6 , and the extrusion portion 8 is movably provided on the support ring 7 along the axial direction of the roller body 6 .

[0050] The squeezing portion 8 is used to squeeze the flexible airbag 9 to adjust the expansion degree of the airbag. Specifically, along the axial direction of the roller body 6, the wall surface of the recessed portion 13 away from the squeezing portion 8 abuts against the flexible airbag 9, so that when the squeezing portion 8 moves toward the flexible airbag 9, the expansion degree of the flexible airbag 9 increases, and conversely, when the squeezing portion 8 moves away from the flexible airbag 9, the expansion degree of the flexible airbag 9 decreases.

[0051] In some embodiments, the extrusion portion 8 is sleeved on the support ring 7 , and the extrusion portion 8 is threadedly connected to the support ring 7 .

[0052] Specifically, the outer wall of the support ring 7 may be provided with threads, and when the extrusion part 8 is sleeved on the support ring 7 , it may cooperate with the threads of the support ring 7 , so that when the extrusion part 8 is rotated, the extrusion part 8 can move along the axial direction of the roller body 6 .

[0053] See also Figure 3 In some embodiments, along the axial direction of the roller body 6, the circumferential wall of the roller body 6 is provided with positioning bosses 11 and positioning ring grooves at intervals, the positioning ring grooves are arranged around the circumferential wall surface of the roller body 6, the roller body 6 is provided with a clamping ring 14, the clamping ring 14 is an incomplete circular ring structure, the clamping ring 14 is clamped in the positioning ring groove, and the support ring 7 is arranged between the clamping ring 14 and the positioning boss 11.

[0054] The positioning boss 11 cooperates with the clamping ring 14 to position the support ring 7 in the axial direction of the roller body 6 .

[0055] The snap ring 14 may be made of an elastic material, for example, the snap ring 14 may be made of spring steel.

[0056] The incomplete annular structure of the snap ring 14 facilitates the disassembly and assembly of the snap ring 14 in the positioning ring groove. Specifically, by separating the two ends of the snap ring 14, the inner diameter of the snap ring 14 can be increased, and the snap ring 14 can then be inserted into the positioning ring groove or removed from the positioning ring groove.

[0057] See also Figure 4 In some embodiments, the thickness of the snap ring 14 gradually increases from the end of the snap ring 14 to the middle of the snap ring 14 .

[0058] On the one hand, the thicker middle portion of the snap ring 14 increases the contact area between the snap ring 14 and the support ring 7, thereby increasing the positioning effect on the support ring 7. On the other hand, the thicker middle portion of the snap ring 14 can make the two ends of the snap ring 14 tend to close and reset after separation.

[0059] The two ends of the clamp ring 14 with smaller thickness facilitate separation of the two ends of the clamp ring 14 .

[0060] In some embodiments, annular collars 15 may be provided at both ends of the snap ring 14 , and the annular collars 15 are convenient for using tweezers or other tools to clamp into the annular collars 15 to separate the two ends of the snap ring 14 .

[0061] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made by ordinary technicians in this field to the technical solutions of the present invention should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A winding and correcting mechanism, applied to a pole piece material winding device (4), the pole piece material winding device (4) comprising a winding roller (1), characterized in that: include: The pressure roller (5) comprises a roller body (6) and a flexible air bag (9) sleeved on the outer peripheral wall of the roller body (6), the roller body (6) and the winding roller (1) are arranged at an interval, and the axis of the roller body (6) is parallel to the axis of the winding roller (1); A support part (2) is rotatably connected to the pole piece material winding device (4), the rotation axis of the support part (2) is parallel to the axis of the winding roller (1), the support part (2) is provided in two parts, the two support parts (2) are respectively provided on both sides of the axial direction of the roller body (6), and the roller body (6) is rotatably connected to the two support parts (2); A driving component is used to drive the supporting part (2) to rotate.

2. The winding and correcting mechanism according to claim 1, characterized in that: The driving component comprises a cylinder (3), the cylinder body of the cylinder (3) is rotatably connected to the pole piece material winding device (4), and the telescopic end of the cylinder (3) is rotatably connected to the support part (2).

3. The winding and correcting mechanism according to claim 2, characterized in that: The cylinder (3) is arranged in two numbers corresponding to the supporting parts (2), and the two cylinders (3) are arranged on opposite sides of the two supporting parts (2) respectively.

4. The winding and correcting mechanism according to claim 1 is characterized in that: The pressure roller (5) further comprises a support ring (7), wherein the support ring (7) is sleeved outside the peripheral wall of the roller body (6), and a recessed portion (13) is provided on the peripheral wall surface of the support ring (7) around the circumference of the support ring (7), and the flexible airbag (9) is accommodated in the recessed portion (13).

5. The winding and correcting mechanism according to claim 1, characterized in that: The flexible airbag (9) is provided with an air inlet channel (10), and the air inlet channel (10) is communicated with a side of the flexible airbag (9) facing the roller body (6).

6. The winding and correcting mechanism according to claim 4, characterized in that: The flexible airbag (9) is provided with an air inlet channel (10), the air inlet channel (10) is connected to the side of the flexible airbag (9) facing the roller body (6), and the bottom wall of the recessed portion (13) is provided with a receiving groove (12), and the air inlet channel (10) is received in the receiving groove (12).

7. The winding and correcting mechanism according to claim 4, characterized in that: The recessed portion (13) is provided with an extrusion portion (8), the flexible airbag (9) and the extrusion portion (8) are arranged along the axial direction of the roller body (6), and the extrusion portion (8) is movably arranged on the support ring (7) along the axial direction of the roller body (6).

8. The winding and correcting mechanism according to claim 7, characterized in that: The extrusion portion (8) is sleeved on the support ring (7), and the extrusion portion (8) is threadedly connected to the support ring (7).

9. The winding and correcting mechanism according to claim 8, characterized in that: Along the axial direction of the roller body (6), the peripheral wall of the roller body (6) is provided with positioning bosses (11) and positioning ring grooves at intervals, the positioning ring grooves are arranged around the peripheral wall surface of the roller body (6), the roller body (6) is provided with a clamping ring (14), the clamping ring (14) is an incomplete circular ring structure, the clamping ring (14) is clamped in the positioning ring groove, and the support ring (7) is arranged between the clamping ring (14) and the positioning boss (11).

10. The winding and correcting mechanism according to claim 9, characterized in that: The thickness of the clamping ring (14) gradually increases from the end of the clamping ring (14) to the middle of the clamping ring (14).

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