Foil stretching mechanism and equipment

Abstract

According to the foil stretching mechanism and equipment, foil is placed between a driving roller and a driven roller, the driving roller rotates under the driving of a roller shaft driving assembly so that the driving roller can convey the foil, and the driven roller can move in the direction close to the driving roller under the driving of a roller gap adjusting assembly so that the foil can be stretched. The foil is clamped between the driving roller and the driven roller, meanwhile, under the action of the rotating piece, the support rotates, due to the fact that the arrangement direction of the driving roller and the driven roller is the material clamping direction, the rotating direction of the support is the stretching direction, and the stretching direction is perpendicular to the material clamping direction, when the support rotates, the foil is subjected to stretching force; therefore, the foil can be unfolded, and wrinkles on the foil are reduced.

Description

Technical Field

[0001] The utility model relates to the field of electrode material production, in particular to a foil stretching mechanism and equipment. Background Art

[0002] Copper-lithium composite tape is a composite material formed by stacking elements such as copper and lithium layer by layer. Due to its excellent electrical and thermal conductivity and corrosion resistance, it is a primary material for battery connectors and current collectors in new energy vehicles. With the rapid development of new energy vehicle technology, the market demand for copper-lithium composite tape is becoming increasingly demanding. In existing technology, after copper-lithium composite tape is formed, the copper foil covering the lithium layer will experience a certain amount of lateral and longitudinal expansion due to the pressure of rollers. This expansion can easily cause wrinkles in the copper foil during the winding process, which can affect the performance of the copper-lithium composite tape. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a foil stretching mechanism and equipment, which can reduce the wrinkles of the existing copper-lithium composite strip.

[0004] The technical solution adopted by the present invention to solve the technical problem is: on the one hand, a foil stretching mechanism is provided, comprising a bracket and:

[0005] A driving roller, wherein the driving roller is mounted on the bracket;

[0006] A roller drive assembly, the roller drive assembly is used to drive the active roller to rotate;

[0007] A driven roller, the driven roller being mounted on the bracket and being arranged opposite to the active roller, wherein the active roller and the driven roller are arranged in a direction of clamping the material;

[0008] A roller gap adjustment assembly, the roller gap adjustment assembly is used to drive the driven roller to move toward or away from the active roller;

[0009] A rotating member, the bracket is installed on the rotating member, the rotating member is used to drive the bracket to rotate, the rotation direction of the bracket is the stretching direction, and the stretching direction is perpendicular to the clamping direction.

[0010] As a further improvement of the above technical solution, the roller drive assembly includes a servo motor, a synchronous belt and two synchronous wheels. The servo motor is installed on the bracket, the synchronous belt is connected between the two synchronous wheels, and the rotating shaft of the servo motor and the active roller are respectively connected to the two synchronous wheels.

[0011] As a further improvement of the above technical solution, the roller drive assembly further includes a tensioning wheel, which is mounted on the bracket and presses against the outer side of the synchronous belt.

[0012] As a further improvement of the above technical solution, the roller gap adjustment assembly includes a cylinder and a guide member, and the cylinder and the guide member are both installed on the bracket; the driven roller is connected to a hanger, and the piston rod of the cylinder and the guide member are both connected to the hanger, and the guide member is used to guide the movement of the hanger.

[0013] As a further improvement of the above technical solution, the guide member includes a guide shaft and a linear bearing. The axial direction of the guide shaft is the same as the clamping direction. One end of the guide shaft is connected to the hanger. The linear bearing is arranged on the bracket and the linear bearing is sleeved on the guide shaft.

[0014] As a further improvement of the above technical solution, the piston rod of the cylinder is connected to the hanger via a floating joint.

[0015] As a further improvement of the above technical solution, the rotating member is a rotating slide, which includes a fixed part and a rotating part, the rotating part is rotatably connected to the fixed part, and the rotating part is connected to the bracket.

[0016] On the other hand, a foil stretching device is provided, comprising two of the aforementioned foil stretching mechanisms, wherein the two foil stretching mechanisms are arranged opposite to each other.

[0017] As a further improvement of the above technical solution, it also includes a mounting frame and a guide rail, the guide rail is arranged on the mounting frame, and the length direction of the guide rail is the same as the arrangement direction of the two foil stretching mechanisms; the rotating member is connected to a mounting plate, and the mounting plate is slidably connected to the guide rail through a slider.

[0018] As a further improvement of the above technical solution, a limiting groove is provided on the side of the guide rail, the mounting plate is connected to a fixing block, the fixing block is connected to a limiting member, and the limiting member is used to abut against the limiting groove.

[0019] The beneficial effects of the present invention are as follows: the foil is placed between the active roller and the driven roller, and under the drive of the roller drive assembly, the active roller rotates so that the active roller can convey the foil, and under the drive of the roller gap adjustment assembly, the driven roller can move toward the active roller so that the foil is clamped between the active roller and the driven roller. At the same time, under the action of the rotating member, the bracket rotates. Since the arrangement direction of the active roller and the driven roller is the clamping direction, the rotation direction of the bracket is the stretching direction, and the stretching direction is perpendicular to the clamping direction, the foil is subjected to a stretching force when the bracket rotates, so that the foil can be unfolded, thereby reducing the generation of wrinkles on the foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a structural diagram of a foil stretching mechanism provided by a preferred embodiment of the present utility model;

[0022] Figure 2 This is a structural schematic diagram of the foil stretching mechanism provided by the preferred embodiment of the utility model from another angle;

[0023] Figure 3 It is a structural schematic diagram of the foil stretching equipment provided by the preferred embodiment of the utility model;

[0024] Figure 4 This is a structural schematic diagram of the foil stretching device provided by the preferred embodiment of the utility model from another angle;

[0025] Figure 5 yes Figure 4 Enlarged view of part A.

[0026] Reference numerals: 1, foil stretching mechanism, 2, bracket, 3, active roller, 4, roller drive assembly, 5, driven roller, 6, roller gap adjustment assembly, 7, rotating member, 8, mounting frame, 9, guide rail;

[0027] 41. Servo motor, 42. Synchronous belt, 43. Synchronous pulley, 44. Tensioner, 51. Hanger, 61. Cylinder, 62. Guide, 71. Fixed part, 72. Mounting plate, 73. Rotating part, 91. Limiting groove;

[0028] 611, floating joint, 621, guide shaft, 622, linear bearing, 721, slider, 722, fixed block, 723, limit piece, 724, limit hole, 725, head, 726, tail rod. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. For example, fixed connection / fixed installation can be selected from screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods as needed. For detachable connection, screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods can be selected as needed. The various technical features in the creation of the present invention can be combined interchangeably without conflicting with each other.

[0030] See Figure 1-2 The preferred embodiment of the utility model provides a foil stretching mechanism 1, including a bracket 2, an active roller 3, a roller drive assembly 4, a driven roller 5, a roller gap adjustment assembly 6, and a rotating member 7; the active roller 3 is mounted on the bracket 2; the roller drive assembly 4 is used to drive the active roller 3 to rotate; the driven roller 5 is mounted on the bracket 2, and the driven roller 5 is arranged opposite to the active roller 3, and the arrangement direction of the active roller 3 and the driven roller 5 is the clamping direction Y; the roller gap adjustment assembly 6 is used to drive the driven roller 5 to move toward or away from the active roller 3; the bracket 2 is mounted on the rotating member 7, and the rotating member 7 is used to drive the bracket 2 to rotate, and the rotation direction of the bracket 2 is the stretching direction X, and the stretching direction X is perpendicular to the clamping direction Y. The foil is placed between the active roller 3 and the driven roller 5. Driven by the roller drive assembly 4, the active roller 3 rotates so that the active roller 3 can convey the foil, and driven by the roller gap adjustment assembly 6, the driven roller 5 can move toward the active roller 3 so that the foil is clamped between the active roller 3 and the driven roller 5. At the same time, under the action of the rotating member 7, the bracket 2 rotates. Since the arrangement direction of the active roller 3 and the driven roller 5 is the clamping direction Y, the rotation direction of the bracket 2 is the stretching direction X, and the stretching direction X is perpendicular to the clamping direction Y, the foil is subjected to a stretching force when the bracket 2 rotates, so that the foil can be unfolded, thereby reducing the generation of wrinkles on the foil.

[0031] The roller drive assembly 4 includes a servo motor 41, a timing belt 42, and two synchronous pulleys 43. The servo motor 41 is mounted on the bracket 2, and the timing belt 42 is connected between the two synchronous pulleys 43. The rotating shaft of the servo motor 41 and the active roller 3 are respectively connected to the two synchronous pulleys 43. The rotation of the rotating shaft of the servo motor 41 drives the connected synchronous pulley 43 to rotate. Driven by the timing belt 42, the other synchronous pulley 43 rotates, which in turn drives the active roller 3. The entire roller drive assembly 4 has a simple structure and is easy to manufacture.

[0032] The roller drive assembly 4 also includes a tensioning pulley 44, which is mounted on the bracket 2 and presses against the outer side of the synchronous belt 42. The tensioning pulley 44 is used to tighten the synchronous belt 42, reduce vibration and energy loss during the movement of the synchronous belt 42, and improve the transmission efficiency and stability of the synchronous belt 42.

[0033] The roller gap adjustment assembly 6 includes a cylinder 61 and a guide 62, both mounted on the bracket 2. The driven roller 5 is connected to the hanger 51. The piston rod of the cylinder 61 and the guide 62 are both connected to the hanger 51. The guide 62 is used to guide the movement of the hanger 51. The cylinder 61 achieves linear motion of the driven roller 5, resulting in a simple and easy-to-implement structure. Furthermore, the guide 62 enhances the stability of the linear motion of the cylinder 61.

[0034] The guide member 62 includes a guide shaft 621 and a linear bearing 622. The axial direction of the guide shaft 621 is aligned with the material clamping direction Y. One end of the guide shaft 621 is connected to the hanger 51. The linear bearing 622 is mounted on the bracket 2 and sleeved onto the guide shaft 621. When the cylinder 61 drives the hanger 51 in linear motion, the guide shaft 621 also moves linearly within the linear bearing 622. The linear bearing 622 has low friction and is relatively stable, allowing the driven roller 5 to achieve smooth linear motion with high sensitivity and precision.

[0035] The piston rod of the cylinder 61 is connected to the hanger 51 via a floating joint 611. The floating joint 611 allows the piston rod of the cylinder 61 to have a certain offset and angle adjustment during operation, thereby ensuring the normal operation of the cylinder 61 and extending the service life of the cylinder 61.

[0036] Rotating member 7 is a rotary slide, comprising a fixed portion 71 and a rotating portion 73. Rotating portion 73 is rotatably connected to fixed portion 71 and connected to bracket 2. Rotation of rotating portion 73 drives bracket 2 in the stretching direction X, applying a stretching force to the foil clamped between active roller 3 and driven roller 5, thereby reducing wrinkles in the foil. The rotary slide has a simple structure and provides precise rotation.

[0037] Please refer to Figure 3-5The preferred embodiment of the present invention also provides a foil stretching device, including two foil stretching mechanisms 1 of the above embodiments, the two foil stretching mechanisms 1 are arranged opposite to each other, and the two foil stretching mechanisms 1 can stretch the two sides of the foil respectively to reduce the generation of foil wrinkles.

[0038] The device also includes a mounting frame 8 and a guide rail 9. The guide rail 9 is arranged on the mounting frame 8, and the length direction of the guide rail 9 is the same as the arrangement direction of the two foil stretching mechanisms 1; the rotating member 7 is connected to the mounting plate 72, and the mounting plate 72 is slidably connected to the guide rail 9 through a slider 721. By sliding the slider 721 along the guide rail 9, the distance between the two foil stretching mechanisms 1 can be adjusted, so that it can be compatible with foils of different widths, thereby expanding the scope of application of the equipment.

[0039] See Figure 3 and Figure 5 A limiting groove 91 is provided on the side of the guide rail 9, and the mounting plate 72 is connected to a fixing block 722, and the fixing block 722 is connected to a limiting member 723. The limiting member 723 is used to abut against the limiting groove 91. When the distance between the two foil stretching mechanisms 1 is adjusted to an appropriate range, the limiting member 723 is abutted against the limiting groove 91, so that the entire foil stretching mechanism 1 can be fixed on the limiting groove 91 to prevent it from sliding relative to the guide rail 9 during the rotation of the rotary slide, causing the distance between the two foil stretching mechanisms 1 to change.

[0040] See Figure 5 Specifically, a limiting hole 724 is provided on the fixing block 722, and the limiting member 723 includes a head 725 and a tail rod 726. The head 725 is located on the outside of the fixing block 722, and one end of the tail rod 726 is connected to the head 725, and the other end is passed through the limiting hole 724. When the foil stretching mechanism 1 needs to be fixed on the guide rail 9, the head 725 abuts against the outside of the fixing block 722, and the tail rod 726 abuts against the limiting groove 91 at one end facing the guide rail 9.

[0041] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A foil stretching mechanism, characterized in that: Includes bracket and: A driving roller, wherein the driving roller is mounted on the bracket; A roller drive assembly, the roller drive assembly is used to drive the active roller to rotate; A driven roller, the driven roller being mounted on the bracket and being arranged opposite to the active roller, wherein the active roller and the driven roller are arranged in a direction of clamping the material; A roller gap adjustment assembly, the roller gap adjustment assembly is used to drive the driven roller to move toward or away from the active roller; A rotating member, the bracket is installed on the rotating member, the rotating member is used to drive the bracket to rotate, the rotation direction of the bracket is the stretching direction, and the stretching direction is perpendicular to the clamping direction.

2. The foil stretching mechanism according to claim 1, characterized in that: The roller drive assembly includes a servo motor, a synchronous belt and two synchronous wheels. The servo motor is installed on the bracket. The synchronous belt is connected between the two synchronous wheels. The rotating shaft of the servo motor and the active roller are respectively connected to the two synchronous wheels.

3. The foil stretching mechanism according to claim 2, characterized in that: The roller drive assembly further includes a tensioning wheel, which is mounted on the bracket and presses against the outer side of the synchronous belt.

4. The foil stretching mechanism according to claim 1, characterized in that: The roller gap adjustment assembly includes a cylinder and a guide member, and the cylinder and the guide member are both installed on the bracket; the driven roller is connected to a hanger, and the piston rod of the cylinder and the guide member are both connected to the hanger, and the guide member is used to guide the movement of the hanger.

5. The foil stretching mechanism according to claim 4, characterized in that: The guide member includes a guide shaft and a linear bearing. The axial direction of the guide shaft is the same as the clamping direction. One end of the guide shaft is connected to the hanger. The linear bearing is arranged on the bracket and is sleeved on the guide shaft.

6. The foil stretching mechanism according to claim 4, characterized in that: The piston rod of the cylinder is connected to the hanger via a floating joint.

7. The foil stretching mechanism according to claim 1, characterized in that: The rotating member is a rotating slide, which includes a fixed part and a rotating part. The rotating part is rotatably connected to the fixed part, and the rotating part is connected to the bracket.

8. A foil stretching device, characterized in that: The invention comprises two foil stretching mechanisms according to any one of claims 1 to 7, wherein the two foil stretching mechanisms are arranged opposite to each other.

9. The foil stretching device according to claim 8, characterized in that: It also includes a mounting frame and a guide rail, the guide rail is arranged on the mounting frame, and the length direction of the guide rail is the same as the arrangement direction of the two foil stretching mechanisms; the rotating member is connected to a mounting plate, and the mounting plate is slidably connected to the guide rail through a slider.

10. The foil stretching device according to claim 9, characterized in that: A limiting groove is provided on the side surface of the guide rail, the mounting plate is connected with a fixing block, the fixing block is connected with a limiting member, and the limiting member is used to abut against the limiting groove.

Images