Zero-tension fixed-length film releasing mechanism

Abstract

The utility model discloses a zero-tension fixed-length membrane releasing mechanism which comprises a fixing plate, a first passing roller, two second passing rollers, two supporting plates, a connecting plate, a main transmission roller, a main transmission servo driving device, a membrane clamping roller, a membrane clamping lifting driving device, a deviation rectification fine adjustment device and two deviation rectification optical fiber sensors. At least three first passing rollers are rotatably and vertically arranged on the upper portion of the inner side of the fixing plate, a main transmission roller is rotatably arranged between the inner side walls of the two supporting plates, a main transmission servo driving device is fixedly installed on the outer side wall of one supporting plate, and the output portion of the main transmission servo driving device penetrates through the supporting plates to be in transmission connection with the main transmission roller. And the diaphragm clamping roller is arranged above the main transmission roller in parallel in a lifting manner through a diaphragm clamping lifting driving device. According to the utility model, the diaphragm with the required length is released from the main transmission roller driven by the main transmission servo driving device in advance and is introduced to the lamination table in a zero-tension manner, so that the problems of wrinkles and non-uniform stretching caused by the traditional material roll releasing can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of a film-releasing mechanism of a laminating machine, and more specifically to a zero-tension fixed-length film-releasing mechanism. Background Art

[0002] The stacking machine is one of the key equipment in the production of lithium batteries. The stacking machine is generally composed of a discharge mechanism, a material box mechanism, a secondary positioning mechanism, a feeding mechanism, a stacking mechanism, a gluing mechanism and a unloading mechanism. Its working principle is to load the battery electrodes into the material box, and the robot picks up the electrodes in the material box. After secondary positioning, the electrodes are placed alternately on the stacking table, the diaphragm is actively unwound, and the stacking table drives the diaphragm to move back and forth left and right to form a Z-shaped stack. After the stacking is completed, it is cut according to the set length and automatically sent out for manual gluing.

[0003] The diaphragm of the film unwinding mechanism of a traditional stacking machine is generally fed from a diaphragm material roll and then covered back and forth on the pole piece on the stacking table to complete the coating. For example, Chinese utility model patent No. CN202817109U discloses a film unwinding mechanism for a stacking machine, which unwinds the diaphragm roll through the cooperation of a film unwinding spindle, a reel device and a servo motor. The diaphragm maintains a certain tension state during the unwinding process. However, due to the inconsistency between the speed of the material roll unwinding and the speed of the film unwinding spindle driven by the servo motor, the tension of the diaphragm changes and the tension, stretching or relaxation state occurs, which can easily lead to wrinkles, warping or stretching deformation on the surface of the diaphragm, affecting the original insulation of the diaphragm. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and to provide a zero-tension fixed-length film-releasing mechanism which can avoid the problems of wrinkles and uneven stretching caused by traditional material roll unloading by releasing the required length of diaphragm from the main drive roller driven by the main drive servo drive device in advance and introducing it to the stacking table in a zero-tension manner.

[0005] To achieve the above-mentioned purpose, the utility model provides a zero-tension fixed-length film-releasing mechanism, including a fixed plate, a first roller, two second rollers, two support plates, a connecting plate, a main transmission roller, a main transmission servo drive device, a diaphragm clamping roller, a diaphragm clamping lifting drive device, a correction fine-tuning device, and two correction optical fiber sensors. At least three first rollers are rotatably and vertically provided on the inner upper part of the fixed plate, wherein two first rollers are rotatably arranged in parallel above another first roller located obliquely below the first roller, and two support plates are respectively and vertically arranged at the two ends of the connecting plate, and the outer side surface of one of the support plates is parallelly installed at the lower end of the fixed plate, and the main transmission roller is rotatably arranged between the inner side walls of the two support plates. The main transmission servo drive device is fixedly installed on the outer side wall of one of the support plates, and the output part of the main transmission servo drive device passes through the support plate and is connected to the main transmission roller for driving and driving it to rotate. The diaphragm clamping lifting drive device is installed on the connecting plate, and the diaphragm clamping roller is lifted and lowered in parallel above the main transmission roller through the diaphragm clamping lifting drive device. The two second rollers are parallel to the two parallel first rollers and are rotatably arranged between the inner side walls of the two support plates and below the main transmission roller. The deflection correction fine-tuning device is arranged above the diaphragm clamping lifting drive device through a bracket, and two deflection correction optical fiber sensors are respectively installed in parallel and at intervals on one side of the deflection correction fine-tuning device and are located on the conveying path of the diaphragm.

[0006] Preferably, two ion wind rods are further included, which are staggered and tiltedly arranged on the inner upper part of the fixed plate and located between two parallel first rollers and another first roller, and the air outlets of the two ion wind rods are both arranged inwards.

[0007] Preferably, the diaphragm clamp lifting drive device includes a diaphragm clamp lifting drive cylinder, a lifting plate, a mounting seat, a push rod, a lifting guide rod, and a lifting guide sleeve. The diaphragm clamp lifting drive cylinder is provided with two and is respectively fixedly mounted on the two ends of the top surface of the connecting plate. The output shaft of the diaphragm clamp lifting drive cylinder passes through the connecting plate and is transmission-connected with the lifting plate. The mounting seat is provided with two and is respectively fixedly mounted on the two ends of the lifting plate. The diaphragm clamp roller is rotatably arranged between the two mounting seats. The lifting guide rod is provided with two and is respectively passed through the lifting guide sleeves of the connecting plate and inserted upward. The top end of each lifting guide rod is fixedly connected to the bottom surface of the push rod, and the bottom end of each lifting guide rod is fixedly connected to the top surface of the lifting plate.

[0008] Preferably, the diaphragm clamp lifting drive device further comprises two limit screws, and the limit screws are respectively vertically penetrated downward on the top rod.

[0009] Preferably, the deflection correction fine-tuning device includes a deflection correction adjustment knob, a first deflection correction adjustment slider, a second deflection correction adjustment slider, a deflection correction adjustment plate, and a linkage block. The back of the first deflection correction adjustment slider is installed on the bracket through a vertical plate, and the second deflection correction adjustment slider is slidably connected to the front of the first deflection correction adjustment slider. The linkage block is L-shaped, and the side of the vertical section of the linkage block is fixedly connected to one side of the second deflection correction adjustment slider. The input end of the deflection correction adjustment knob passes through the horizontal section of the linkage block and is fixedly connected to one side of the first deflection correction adjustment slider. The deflection correction adjustment plate is L-shaped, and the back of the vertical section of the deflection correction adjustment plate is fixedly set on the front of the second deflection correction adjustment slider. A U-shaped opening groove is opened in the middle of the horizontal section of the correction adjustment plate toward one side of the fixed plate, and two deflection correction optical fiber sensors are respectively spaced apart on the top surfaces on both sides of the U-shaped opening groove.

[0010] Preferably, the main transmission servo drive device comprises a main transmission servo drive motor and a coupling, and the output shaft of the main transmission servo drive motor is drivingly connected to one end of the main transmission roller through the coupling.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model has a simple structure and a reasonable design. The diaphragm of the required length is released in advance from the main drive roller driven by the main drive servo drive device, and is introduced into the stacking table in a zero-tension manner. The diaphragm clamping roller is driven up and down by the diaphragm clamping lifting drive device to clamp and guide the diaphragm, and finally introduced into the stacking table for Z-shaped coating of the positive and negative electrode sheets. Compared with the traditional method of introducing the material into the stacking table by unloading the material roll with tension, it has more advantages in that it can avoid stretching and deformation of the diaphragm, and affect the insulation and lithium ion permeability of the original diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of a zero-tension fixed-length film-releasing mechanism provided by the embodiment of the utility model. Figure 1 ;

[0015] Figure 2 It is a side view schematic diagram of a zero-tension fixed-length film-releasing mechanism provided by an embodiment of the utility model;

[0016] Figure 3It is an enlarged schematic diagram of a diaphragm clamping lifting and lowering driving device of a zero-tension fixed-length film-releasing mechanism provided by an embodiment of the utility model;

[0017] Figure 4 It is an exploded schematic diagram of a deviation correction and fine-tuning device of a zero-tension fixed-length film-releasing mechanism provided by an embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of a zero-tension fixed-length film-releasing mechanism provided by the embodiment of the utility model. Figure 2 . DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Please refer to Figure 1 An embodiment of the utility model provides a zero-tension fixed-length film-releasing mechanism, comprising a fixed plate 1, a first roller 11, two second rollers 12, two support plates 2, a connecting plate 21, a main drive roller 3, a main drive servo drive device 4, a diaphragm clamping roller 5, a diaphragm clamping lifting drive device 6, a correction fine-tuning device 7, two correction optical fiber sensors 8 and other components. The following is a detailed description of the various components of this embodiment in conjunction with the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, at least three first rollers 11 are rotatably and vertically provided on the inner upper part of the fixed plate 1, wherein two first rollers 11 are rotatably arranged in parallel above another first roller 11 located obliquely below the first roller 11, and two support plates 2 are respectively arranged vertically and parallel at the two ends of the connecting plate 21, and the outer side surface of one support plate 2 can be fixedly installed on the lower end of the fixed plate 1, the main drive roller 3 is rotatably arranged between the inner side walls of the two support plates 2, the main drive servo drive device 4 is fixedly installed on the outer side wall of one of the support plates 2, the output part of the main drive servo drive device 4 passes through the support plate 2 and is connected to the main drive roller 3 for rotation, the diaphragm clamping lifting drive device 6 is installed on the connecting plate 21, and the diaphragm clamping roller 5 is lifted and lowered in parallel above the main drive roller 3 through the diaphragm clamping lifting drive device 6, and the two second rollers 12 are parallel to the two parallel first rollers 11 and are rotatably arranged between the inner side walls of the two support plates 2 and are also located below the main drive roller 3.

[0022] Among them, at least three first rollers 11 provide multi-point support for the transportation of the diaphragm, ensuring the stability of the diaphragm during transportation without being restricted by a single-point support, thereby avoiding the stretching deformation of the diaphragm.

[0023] Preferably, the main transmission servo drive device 4 may include a main transmission servo drive motor 41 and a coupling 42 , and the output shaft of the main transmission servo drive motor 41 is drivingly connected to one end of the main transmission roller 3 through the coupling 42 .

[0024] Due to the manufacturing accuracy errors and position errors of each roller, the diaphragm may be shifted during transportation. Preferably, the deflection correction and fine-tuning device 7 can be set above the diaphragm lifting and lowering drive device 6 through a bracket 70, and two deflection correction optical fiber sensors 8 are respectively installed in parallel on one side of the deflection correction and fine-tuning device 7 and are located on the conveying path of the diaphragm.

[0025] In this embodiment, two ion wind rods 9 can also be included. The two ion wind rods 9 are staggered and tiltedly arranged on the inner upper part of the fixed plate 1 and are located between two parallel first rollers 11 and another first roller 11. The air outlets of the two ion wind rods 9 are both arranged inward.

[0026] Among them, the ion wind rod 9 is used for electrostatic dust removal of the diaphragm. A large amount of ion wind containing positive and negative ions is generated by the electrostatic ion wind rod 9. When the diaphragm belt passes through the action range of the ion wind, the static electricity on the diaphragm is adsorbed and neutralized by the positive and negative ions. The static charges on the upper and lower surfaces of the diaphragm are neutralized and are in an electrostatic equilibrium state, thereby achieving the effect of removing static electricity from the diaphragm belt.

[0027] like Figure 3 As shown, the diaphragm clamp lifting drive device 6 may include a diaphragm clamp lifting drive cylinder 61, a lifting plate 62, a mounting seat 63, a push rod 64, a lifting guide rod 65, and a lifting guide sleeve 66. The diaphragm clamp lifting drive cylinder 61 is provided with two and is respectively fixedly installed at the two ends of the top surface of the connecting plate 21. The output shaft of the diaphragm clamp lifting drive cylinder 61 passes through the connecting plate 21 and is transmission-connected with the lifting plate 62. The mounting seat 63 is provided with two and is respectively fixedly installed at the two ends of the lifting plate 62. The diaphragm clamp roller 5 is rotatably arranged between the two mounting seats 63. The lifting guide rod 65 is provided with two and is respectively correspondingly passed through the lifting guide sleeve 66 inserted upward on the connecting plate 21. The top end of each lifting guide rod 65 is fixedly connected to the bottom surface of the push rod 64, and the bottom end of each lifting guide rod 65 is fixedly connected to the top surface of the lifting plate 62.

[0028] In order to limit the travel range of the diaphragm clamping roller 5, the diaphragm clamping lifting drive device 6 may further include two limit screws 67, and the limit screws 67 are respectively vertically penetrated downward on the push rod 64.

[0029] like Figure 4As shown, the deflection correction fine-tuning device 7 may include a deflection correction adjustment knob 71, a first deflection correction adjustment slider 72, a second deflection correction adjustment slider 73, a deflection correction adjustment plate 74, and a linkage block 75. The back of the first deflection correction adjustment slider 72 is installed on the bracket 70 through a vertical plate 721, and the second deflection correction adjustment slider 73 is slidably connected to the front of the first deflection correction adjustment slider 72. The linkage block 75 is L-shaped, and the side of the vertical section of the linkage block 75 is fixedly connected to one side of the second deflection correction adjustment slider 73. The input end of the deflection correction adjustment knob 71 passes through the horizontal section of the linkage block 75 and is fixedly connected to one side of the first deflection correction adjustment slider 72. The deflection correction adjustment plate 74 is L-shaped, and the back of the vertical section of the deflection correction adjustment plate 74 is fixedly set on the front of the second deflection correction adjustment slider 73. A U-shaped opening groove 741 is opened in the middle of the horizontal section of the deflection correction adjustment plate 74 toward the side of the fixed plate 1, and two deflection correction optical fiber sensors 8 are respectively spaced apart on the top surfaces of both sides of the U-shaped opening groove 741.

[0030] The working principle of this embodiment is as follows:

[0031] like Figure 5 As shown, during the specific implementation, the staff first releases the required length of the diaphragm to the stacking table of the stacking machine through the main drive roller 3 in advance. The main drive servo drive motor 41 can accurately control the rotation speed and rotation angle of the main drive roller, ensuring the constant transmission speed of the diaphragm and realizing zero-tension film release. At the same time, the diaphragm clamping lifting drive device 6 can drive the diaphragm clamping roller 5 to move up and down and clamp and guide the diaphragm to provide flexible adjustment to ensure that the diaphragm is not subjected to extra tension when it is released. When the diaphragm passes through the two inclined ion wind rods 9, the ion wind rods 9 can remove the static electricity on the upper and lower surfaces of the diaphragm and make its potential uniform. In addition, the two correction optical fiber sensors 8 located on both sides of the diaphragm conveying path can monitor the deviation of the diaphragm in real time. When the diaphragm is offset, the operator manually turns the correction adjustment knob 71 to drive the correction adjustment plate 74 to move back and forth to fine-tune the diaphragm located between the U-shaped opening grooves 741, thereby improving the position accuracy of the diaphragm entering the stacking table.

[0032] In summary, the utility model releases the diaphragm of the required length from the main drive roller driven by the main drive servo drive device in advance, introduces it to the stacking table in a zero-tension manner, and drives the diaphragm clamping roller to move up and down through the diaphragm clamping lifting drive device to clamp and guide the diaphragm, and finally introduces it to the stacking table for Z-shaped coating of the positive and negative electrode sheets. Compared with the traditional method of introducing the material into the stacking table through the tensioned material roll discharge, it has more advantages in that it can avoid the stretching deformation of the diaphragm and affect the original insulation and lithium ion permeability of the diaphragm.

[0033] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A zero-tension fixed-length film-releasing mechanism, characterized in that: The invention comprises a fixed plate (1), a first roller (11), two second rollers (12), two support plates (2), a connecting plate (21), a main transmission roller (3), a main transmission servo drive device (4), a diaphragm clamping roller (5), a diaphragm clamping lifting drive device (6), a deviation correction fine-tuning device (7), and two deviation correction optical fiber sensors (8). At least three first rollers (11) are rotatably and vertically arranged on the inner upper part of the fixed plate (1), wherein two first rollers (11) are rotatably arranged in parallel above another first roller (11) located obliquely below the first roller (11), two support plates (2) are respectively and vertically arranged at the two ends of the connecting plate (21), wherein the outer side surface of one support plate (2) is parallelly installed at the lower end of the fixed plate (1), the main transmission roller (3) is rotatably arranged between the inner side walls of the two support plates (2), and the main transmission servo drive device (4) is fixedly mounted on the outer wall of one of the support plates (2), the output portion of the main transmission servo drive device (4) passes through the support plate (2) and is transmission-connected to the main transmission roller (3) and drives it to rotate, the diaphragm clamping lifting drive device (6) is mounted on the connecting plate (21), the diaphragm clamping roller (5) is lifted and lowered in parallel above the main transmission roller (3) through the diaphragm clamping lifting drive device (6), two second over rollers (12) are parallel to the two parallel first over rollers (11) and are rotatably arranged between the inner walls of the two support plates (2) and also below the main transmission roller (3), the deflection correction fine-tuning device (7) is arranged above the diaphragm clamping lifting drive device (6) through a bracket (70), and two deflection correction optical fiber sensors (8) are respectively installed in parallel and spaced apart on one side of the deflection correction fine-tuning device (7) and are located on the conveying path of the diaphragm.

2. A zero-tension fixed-length film-releasing mechanism according to claim 1, characterized in that: It also comprises two ion wind rods (9), which are arranged at an offset and tilted position on the inner upper part of the fixed plate (1) and are located between two parallel first rollers (11) and another first roller (11), and the air outlets of the two ion wind rods (9) are arranged inwards.

3. A zero-tension fixed-length film-releasing mechanism according to claim 1, characterized in that: The diaphragm clamp lifting drive device (6) comprises a diaphragm clamp lifting drive cylinder (61), a lifting plate (62), a mounting seat (63), a push rod (64), a lifting guide rod (65), and a lifting guide sleeve (66). The diaphragm clamp lifting drive cylinder (61) is provided with two and is respectively fixedly mounted on the two ends of the top surface of the connecting plate (21). The output shaft of the diaphragm clamp lifting drive cylinder (61) passes through the connecting plate (21) and is transmission-connected with the lifting plate (62). The mounting seat (63) is provided with two and is respectively fixedly mounted on the two ends of the lifting plate (62). The diaphragm clamp roller (5) is rotatably arranged between the two mounting seats (63). The lifting guide rod (65) is provided with two and is respectively passed through the lifting guide sleeve (66) inserted upward on the connecting plate (21). The top end of each lifting guide rod (65) is fixedly connected to the bottom surface of the push rod (64), and the bottom end of each lifting guide rod (65) is fixedly connected to the top surface of the lifting plate (62).

4. A zero-tension fixed-length film-releasing mechanism according to claim 3, characterized in that: The diaphragm clamp lifting drive device (6) further comprises two limit screws (67), and the limit screws (67) are respectively vertically penetrated downward on the top rod (64).

5. The zero-tension fixed-length film-releasing mechanism according to claim 1, characterized in that: The deflection correction fine-adjustment device (7) comprises a deflection correction adjustment knob (71), a first deflection correction adjustment slider (72), a second deflection correction adjustment slider (73), a deflection correction adjustment plate (74), and a linkage block (75); the back side of the first deflection correction adjustment slider (72) is mounted on the bracket (70) through a vertical plate (721); the second deflection correction adjustment slider (73) is slidably connected to the front side of the first deflection correction adjustment slider (72); the linkage block (75) is L-shaped; the vertical section side of the linkage block (75) is fixed to one side of the second deflection correction adjustment slider (73). The input end of the deflection correction adjustment knob (71) passes through the horizontal section of the linkage block (75) and is fixedly connected to one side of the first deflection correction adjustment slider (72); the deflection correction adjustment plate (74) is L-shaped; the back of the vertical section of the deflection correction adjustment plate (74) is fixedly arranged on the front of the second deflection correction adjustment slider (73); a U-shaped opening groove (741) is provided in the middle of the horizontal section of the deflection correction adjustment plate (74) toward one side of the fixed plate (1); and two deflection correction optical fiber sensors (8) are respectively arranged at intervals on the top surfaces of both sides of the U-shaped opening groove (741).

6. The zero-tension fixed-length film-releasing mechanism according to claim 1, characterized in that: The main transmission servo drive device (4) comprises a main transmission servo drive motor (41) and a coupling (42), and the output shaft of the main transmission servo drive motor (41) is drivingly connected to one end of the main transmission roller (3) through the coupling (42).

Images