Separator pressing plate mechanism and sheet stacking machine

Abstract

The present application discloses a separator pressing plate mechanism and a sheet stacking machine. The separator pressing plate mechanism comprises an upper pressing plate and a lower pressing plate, wherein the upper pressing plate and the lower pressing plate are configured to move towards each other or one of the upper pressing plate and the lower pressing plate move towards the other to jointly press a separator. When the separator is cut off, the separator moves along with a battery cell, when the tail end of the separator moves to the position of the separator pressing plate mechanism close to a tail separator winding position, the tail end of the separator is pressed by means of the upper pressing plate and the lower pressing plate of the separator pressing plate mechanism, and the tension control of the separator is achieved while a tail separator winding mechanism is used to complete the winding operation of the tail separator, thereby increasing the precision of a finished product and improving the winding quality of the battery cell separator.

Description

Diaphragm pressing mechanism and lamination machine

[0001] This application is based on and claims priority to Chinese patent applications with application number CN202311220077.5, application date September 21, 2023, and application number CN202311292564.2, application date October 8, 2023, and the entire contents of which are hereby incorporated into this application as a whole. Technical Field

[0002] The present application relates to the technical field of battery manufacturing, and in particular to a diaphragm pressing plate mechanism and a laminating machine. Background Art

[0003] The existing Z-type lamination process begins with separator unwinding, which is then guided through separator unwinding rollers, transition rollers, and a tension mechanism to the main lamination table. The main lamination table drives the separator back and forth, folding it into a Z-shape. Simultaneously, a robotic arm places the cut positive and negative electrode sheets onto the separator. After stacking the desired number of cell layers, the lamination table stops. After the separator tail is completed, the separator is cut, glue is applied, and the material is unloaded.

[0004] In the Z-type stacking process, the stacking table drives the diaphragm to move back and forth, and the tail winding action is required after the stacking is completed. As a result, wrinkles inside the battery cell and the tail winding of the diaphragm cannot be completely avoided, which affects the precision of the finished product and the quality of the battery cell diaphragm winding.

[0005] Therefore, it is necessary to be able to control the tension of the battery cell tail film to improve the quality of the battery cell film winding. Application Contents

[0006] The embodiment of the present application provides a diaphragm pressing plate mechanism and a laminating machine, which cooperate with the tail film winding mechanism to complete the winding operation of the tail film while realizing the tension control of the diaphragm, thereby improving the precision of the finished product and improving the quality of the battery cell diaphragm winding.

[0007] In a first aspect, an embodiment of the present application provides a diaphragm pressure plate mechanism, comprising: an upper pressure plate and a lower pressure plate, wherein the upper pressure plate and the lower pressure plate are configured to move toward each other or one of them moves toward the other to jointly compress the diaphragm.

[0008] In a second aspect, an embodiment of the present application further provides a laminating machine, comprising the diaphragm pressure plate mechanism of the first aspect.

[0009] According to an embodiment of the present application, a diaphragm pressing plate mechanism is provided, comprising an upper pressing plate and a lower pressing plate. The upper pressing plate and the lower pressing plate are configured to move toward each other, or one of them moves toward the other, to jointly compress the diaphragm. After the diaphragm is cut, the diaphragm moves along with the battery cell. When the tail end of the diaphragm moves to the diaphragm pressing plate mechanism near the tail film winding position, the upper and lower pressing plates of the diaphragm pressing plate mechanism press the tail end of the diaphragm, and while cooperating with the tail film winding mechanism to complete the tail film winding operation, the tension of the diaphragm is controlled, thereby improving the precision of the finished product and enhancing the quality of the battery cell diaphragm winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0011] FIG1 is a perspective schematic diagram of a first embodiment of a diaphragm pressure plate mechanism of the present application;

[0012] FIG2 is a perspective schematic diagram of the first embodiment of the diaphragm pressure plate mechanism of the present application from another perspective;

[0013] FIG3 is an exploded view of the first embodiment of the diaphragm pressure plate mechanism of the present application;

[0014] FIG4 is a perspective schematic diagram of a second embodiment of the diaphragm pressure plate mechanism of the present application;

[0015] FIG5 is a perspective schematic diagram of the second embodiment of the diaphragm pressure plate mechanism of the present application from another perspective;

[0016] FIG6 is an exploded schematic diagram of the second embodiment of the diaphragm pressure plate mechanism of the present application.

[0017] Description of the numbers in Figures 1-3:

[0018] 1-Main frame; 2-Upper pressure plate bracket; 21-Mounting plate; 3-Upper pressure plate; 4-Lower pressure plate bracket; 5-Lower pressure plate; 6-Reset cylinder; 7-First stopper; 8-Second stopper; 9-First cylinder; 10-Distance sensor; 11-Pressure regulating valve; 12-Solenoid proportional valve; 13-Tension calibration sensor; 14-Mounting base.

[0019] Description of the numbers in Figures 4-6:

[0020] 100 - main frame; 110 - first bracket; 120 - second bracket, 121 - rod; 122 - connecting plate; 123 - elastic member; 124 - first adjusting member;

[0021] 200-upper pressure plate;

[0022] 300-lower pressing plate; 310-second adjusting member;

[0023] 400-smoothing plate; 410-transition frame; 420-shaft sleeve;

[0024] 500-synchronous assembly; 510-pulley; 511-wheel seat; 520-synchronous belt;

[0025] 600-first cylinder;

[0026] 700 - Second cylinder.

[0027] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] First embodiment:

[0032] Figure 1 is a stereoscopic schematic diagram of the first embodiment of the diaphragm pressure plate mechanism of the present application; Figure 2 is a stereoscopic schematic diagram of the first embodiment of the diaphragm pressure plate mechanism of the present application from another perspective; Figure 3 is an exploded schematic diagram of the first embodiment of the diaphragm pressure plate mechanism of the present application.

[0033] The first embodiment provides a diaphragm pressure plate mechanism and a laminating machine, comprising an upper pressure plate and a lower pressure plate, each configured to move toward each other or one toward the other to jointly compress the diaphragm. The diaphragm pressure plate mechanism of this embodiment compresses the tail end of the diaphragm using the upper and lower pressure plates of the diaphragm pressure plate mechanism, while simultaneously controlling the tension of the diaphragm while cooperating with a tail film winding mechanism to complete the tail film winding operation, thereby improving the precision of the finished product and enhancing the quality of the battery cell diaphragm winding.

[0034] As shown in Figures 1-3, the diaphragm pressure plate mechanism includes a main frame 1, an upper pressure plate bracket 2, an upper pressure plate 3, a lower pressure plate bracket 4, a lower pressure plate 5, a reset cylinder 6 and a first stopper 7. The upper pressure plate bracket 2 is slidably mounted on the main frame 1 in the vertical direction. The upper pressure plate 3 is slidably mounted on the upper pressure plate bracket 2 in the horizontal direction. The lower pressure plate bracket 4 is slidably mounted on the main frame 1 in the vertical direction. The lower pressure plate 5 is slidably mounted on the lower pressure plate bracket 4 in the horizontal direction. The reset cylinder 6 is arranged on the side of the upper pressure plate 3 facing away from the lower pressure plate 5, and the reset cylinder 6 is installed on the upper pressure plate bracket 2. The telescopic end of the reset cylinder 6 is away from the side where the battery cell diaphragm is wound. The first stopper 7 is arranged on the plate surface of the upper pressure plate 3 facing away from the lower pressure plate 5, and the first stopper 7 can abut against the telescopic end of the reset cylinder 6. According to the diaphragm pressure plate mechanism of the present technical solution, before the upper and lower pressure plates 5 need to press the diaphragm, the telescopic end of the reset cylinder 6 arranged on the upper pressure plate bracket 2 is extended, and the telescopic end of the reset cylinder 6 abuts against the first stop block 7 to push the upper pressure plate 3 to move horizontally relative to the upper pressure plate bracket 2 away from the battery cell diaphragm winding side, so that the upper pressure plate 3 can be aligned with the lower pressure plate 5, and the upper and lower pressure plates 5 can better press the diaphragm, thereby improving the quality of the battery cell diaphragm winding.

[0035] As shown in Figures 1-3, in some embodiments, the diaphragm pressure plate mechanism also includes a second stopper 8. The second stopper 8 is installed on the side of the upper pressure plate 3 away from the lower pressure plate 5. The second stopper 8 is arranged on the side away from the telescopic end of the reset cylinder 6. The upper pressure plate bracket 2 includes a mounting plate 21. The mounting plate 21 is arranged on the side of the upper pressure plate 3 away from the lower pressure plate 5. The mounting plate 21 is parallel to the upper pressure plate 3, and the length direction of the mounting plate 21 corresponds to the width direction of the diaphragm. The reset cylinder 6 is installed on the mounting plate 21, and the second stopper 8 can abut against the mounting plate 21. In this embodiment, the reset cylinder 6 is arranged on the mounting plate 21. The first cylinder 9 and the second cylinder are arranged on both sides of the upper pressure plate 3 relative to the mounting plate 21. When the reset cylinder 6 needs to reset the upper pressure plate 3 so that the upper pressure plate 3 and the lower pressure plate 5 are aligned vertically, the telescopic end of the reset cylinder 6 extends out and abuts against the first stop block 7, thereby pushing the upper pressure plate 3 to move horizontally relative to the upper pressure plate bracket 2 away from the side of the battery cell winding diaphragm. When the second stop block 8 abuts against the mounting plate 21, the upper pressure plate 3 and the lower pressure plate 5 are completely aligned.

[0036] As shown in Figures 1-3, in some embodiments, the second stopper 8 is provided with a telescopic rod. The telescopic rod can move horizontally along the length of the diaphragm, and one end of the telescopic rod can abut against the mounting plate 21. In this embodiment, since the second stopper 8 is fixed to the upper platen 3, the alignment accuracy of the upper platen 3 and the lower platen 5 can be adjusted by controlling the horizontal movement of the telescopic rod.

[0037] As shown in Figures 1-3, in some embodiments, there are two second stops 8. The two second stops 8 are symmetrically arranged on the upper platen 3 along the width direction of the diaphragm. The two second stops abut against the mounting plate 21, effectively preventing the upper platen 3 from deflecting in the horizontal direction, thereby ensuring better alignment of the upper and lower platens 5.

[0038] As shown in Figures 1-3, in some embodiments, the diaphragm pressing plate mechanism further includes a first cylinder 9 and a locking device. The first cylinder 9 is mounted on the lower pressing plate bracket 4. The telescopic end of the first cylinder 9 is horizontally connected to the lower pressing plate 5. The telescopic end faces the side away from the battery cell diaphragm winding. The telescopic end of the first cylinder 9 is extended to a predetermined position before the diaphragm begins to wind. The upper pressing plate 3 and the lower pressing plate 5 selectively compress the diaphragm in a mirror-symmetrical manner in the horizontal direction. The locking device is used to lock the upper pressing plate 3 and the lower pressing plate 5. In this embodiment, when the upper and lower pressing plates 5 are aligned vertically and the diaphragm needs to be compressed for battery cell winding, the locking device locks the upper pressing plate 3 and the lower pressing plate 5, which are compressing the diaphragm, so that the first cylinder 9 can drive the upper and lower pressing plates 3 and 5 to move simultaneously in the horizontal direction. The telescopic end of the first cylinder 9 is connected to the lower pressing plate 5, and the telescopic end faces the side away from the battery cell diaphragm winding. Before the upper and lower pressing plates 5 compress the diaphragm, the telescopic end of the first cylinder 9 is in an extended position. When the upper pressing plate 3 and the lower pressing plate 5 are aligned up and down to press the diaphragm, the battery cell diaphragm begins to wind. If the diaphragm tension is too large, it can drive the upper pressing plate 3 and the lower pressing plate 5 to move horizontally toward the winding side of the battery cell diaphragm. The telescopic end of the first cylinder 9 is compressed, thereby reducing the diaphragm tension, preventing the diaphragm tension from being too large, which affects the battery cell winding quality.

[0039] As shown in Figures 1-3, in some embodiments, the locking device includes a positioning pin and a positioning hole. The positioning pin is provided on the side of the upper pressing plate 3 facing the lower pressing plate 5. The positioning hole is locked with the positioning pin. The positioning hole is provided on the side of the lower pressing plate 5 facing the upper pressing plate 3. In this embodiment, after the upper pressing plate 3 and the lower pressing plate 5 are aligned up and down to press the diaphragm, the positioning pin of the upper pressing plate 3 and the positioning hole of the lower pressing plate 5 are locked together, so that when the tension of the diaphragm is too large, the upper pressing plate 3 and the lower pressing plate 5 can move in the horizontal direction at the same time.

[0040] It should be noted that in this embodiment, the locking device is a locking combination of a positioning pin and a positioning hole. In some other optional embodiments, the locking device can also be other locking structures, such as a locking device with a clamping structure arranged between the upper pressure plate 3 and the lower pressure plate 5, etc., which is not limited here.

[0041] As shown in Figures 1-3, in some embodiments, the diaphragm pressure plate mechanism further includes a distance sensor 10, a pressure regulating valve 11, and an electromagnetic proportional valve 12. The distance sensor 10 is mounted on the lower pressure plate bracket 4 and is used to measure the horizontal distance moved by the lower pressure plate 5. The pressure regulating valve 11 is pneumatically connected to the first cylinder 9. The electromagnetic proportional valve 12 is electrically connected to the distance sensor 10 and the pressure regulating valve 11. The distance sensor 10 is provided with a preset distance value, and the electromagnetic proportional valve 12 is provided with a first preset value. The first preset value corresponds to the maximum tension set during the diaphragm winding process. If the distance measured by the distance sensor 10 is less than the preset distance value, the distance sensor 10 can compare the measured distance value with the preset distance value. When the measured distance value is less than the preset distance value, the diaphragm tension is excessive, and the distance sensor 10 sends a signal back to the proportional valve. The electromagnetic proportional valve 12 regulates the pressure increase in the first cylinder 9 through the pressure regulating valve 11, thereby adjusting the diaphragm tension, so that the pressure in the first cylinder 9 stabilizes at a certain value. When the distance sensor 10 continuously feeds back signals to the electromagnetic proportional valve 12, and the value adjusted by the electromagnetic proportional valve 12 on the first cylinder 9 exceeds the first preset value, the diaphragm tension exceeds the set maximum tension, and the electromagnetic proportional valve 12 automatically alarms. At this time, it is necessary to stop the machine and manually check whether there is a problem.

[0042] It should be noted that the pressure regulating valve 11 in this embodiment is an ultra-precision pressure regulating valve 11 , and the ultra-precision pressure regulating valve 11 has a higher pressure regulating accuracy.

[0043] As shown in Figures 1-3, in some embodiments, the diaphragm pressure plate mechanism also includes a tension calibration sensor 13 and a mounting seat 14. The tension calibration sensor 13 is used to calibrate the tension exerted on the lower pressure plate 5 in the horizontal direction. The tension calibration sensor 13 is moved in the horizontal direction and mounted on the mounting seat 14, and the mounting seat 14 is mounted on the lower pressure plate bracket 4. The electromagnetic proportional valve 12 is also provided with a second preset value. The second preset value is smaller than the first preset value, and the diaphragm tension corresponding to the second preset value is the same as the tension exerted on the lower pressure plate 5 calibrated by the tension calibration sensor 13. In this embodiment, before the battery cell starts to wind the diaphragm, the minimum preset value of the pressure exerted on the diaphragm is calibrated by the tension calibration sensor 13 of the lower pressure plate 5. The minimum preset value corresponds to the second preset value of the electromagnetic proportional valve 12. The first preset value is calculated by the second preset value. The first preset value corresponds to the maximum preset value of the tension exerted on the diaphragm. The first preset value and the second preset value are input into the electromagnetic proportional valve 12. The electromagnetic proportional valve 12 adjusts the pressure regulating valve 11 so that the diaphragm tension is always controlled between the diaphragm tension corresponding to the first preset value and the diaphragm tension corresponding to the second preset value, so that the diaphragm tension is stably controlled during the winding process of the battery cell.

[0044] In some embodiments, the diaphragm pressure plate mechanism further includes a second connecting plate. This second connecting plate is mounted on the side of the lower pressure plate 5 away from the cell diaphragm winding. This second connecting plate faces a distance sensor 10 along the length of the diaphragm. The distance sensor 10 measures the distance to the second connecting plate. In this embodiment, the distance sensor 10 measures the horizontal movement of the upper and lower pressure plates 5 by measuring the distance to the second connecting plate.

[0045] The embodiment of the present application also provides a laminating machine. The laminating machine includes the diaphragm pressing plate mechanism of any of the aforementioned embodiments of the present application. The diaphragm pressing plate mechanism includes a main frame 1, an upper pressing plate bracket 2, an upper pressing plate 3, a lower pressing plate bracket 4, a lower pressing plate 5, a reset cylinder 6 and a first stopper 7. The upper pressing plate bracket 2 is slidably mounted on the main frame 1 in the vertical direction. The upper pressing plate 3 is slidably mounted on the upper pressing plate bracket 2 in the horizontal direction. The lower pressing plate bracket 4 is slidably mounted on the main frame 1 in the vertical direction. The lower pressing plate 5 is slidably mounted on the lower pressing plate bracket 4 in the horizontal direction. The reset cylinder 6 is arranged on the side of the upper pressing plate 3 facing away from the lower pressing plate 5, and the reset cylinder 6 is installed on the upper pressing plate bracket 2. The telescopic end of the reset cylinder 6 is away from the side where the battery cell diaphragm is wound. The first stopper 7 is arranged on the plate surface of the upper pressing plate 3 facing away from the lower pressing plate 5, and the first stopper 7 can abut against the telescopic end of the reset cylinder 6. According to the diaphragm pressure plate mechanism of the present technical solution, before the upper and lower pressure plates 5 need to press the diaphragm, the telescopic end of the reset cylinder 6 arranged on the upper pressure plate bracket 2 is extended, and the telescopic end of the reset cylinder 6 abuts against the first stop block 7 to push the upper pressure plate 3 to move horizontally relative to the upper pressure plate bracket 2 away from the battery cell diaphragm winding side, so that the upper pressure plate 3 can be aligned with the lower pressure plate 5, and the upper and lower pressure plates 5 can better press the diaphragm, thereby improving the quality of the battery cell diaphragm winding.

[0046] Second embodiment:

[0047] Figure 4 is a stereoscopic schematic diagram of the second embodiment of the diaphragm pressure plate mechanism of the present application; Figure 5 is a stereoscopic schematic diagram of the second embodiment of the diaphragm pressure plate mechanism of the present application from another perspective; and Figure 6 is an exploded schematic diagram of the second embodiment of the diaphragm pressure plate mechanism of the present application.

[0048] A second embodiment provides a diaphragm pressure plate mechanism and a laminating machine, comprising an upper pressure plate and a lower pressure plate, each configured to move toward each other or one toward the other to jointly compress the diaphragm. The diaphragm pressure plate mechanism of this embodiment compresses the tail end of the diaphragm using the upper and lower pressure plates of the diaphragm pressure plate mechanism, while simultaneously controlling the tension of the diaphragm while cooperating with a tail film winding mechanism to complete the tail film winding operation, thereby improving the precision of the finished product and enhancing the quality of the battery cell diaphragm winding.

[0049] 4-6 , the diaphragm pressing plate mechanism includes an upper pressing plate 200 and a lower pressing plate 300, with a smoothing plate 400 sandwiched between the upper pressing plate 200 and the lower pressing plate 300. The smoothing plate 400 is connected to the lower pressing plate 300 via a synchronization component 500. The synchronization component 500 is configured to drive the smoothing plate 400 toward or away from the lower pressing plate 300 when the lower pressing plate 300 moves, so that the smoothing plate 400 and the lower pressing plate 300 form a first gap for the diaphragm to pass through before the lower pressing plate 300 and the upper pressing plate 200 clamp the diaphragm, or form a second gap for the blanking robot to pass through when the lower pressing plate 300 and the upper pressing plate 200 are opened.

[0050] In this embodiment, when the unloading robot needs to grab a wound battery cell and bring it to the winding station, the upper pressing plate 200 rises and the lower pressing plate 300 descends, moving the upper and lower pressing plates 200 and 300 away from each other. Simultaneously, the synchronization assembly 500 drives the smoothing plate 400 upward and away from the lower pressing plate 300, forming a second gap between the smoothing plate 400 and the lower pressing plate 300 for the unloading robot to pass through. After the unloading robot grabs the wound battery cell and brings it to the winding station, the battery cell pulls the separator to the specified length, and the thermal fuse cuts the separator. The lower pressure plate 300 rises, causing the synchronization component 500 to drive the smoothing plate 400 to approach the lower pressure plate 300. A first gap is formed between the smoothing plate 400 and the lower pressure plate 300. The cut diaphragm continues to move with the battery cell. The diaphragm passes through the first gap during the pulling process. The smoothing plate 400 smoothes the curled diaphragm. Then the upper pressure plate 200 descends, and the upper pressure plate 200 and the lower pressure plate 300 jointly press the diaphragm to better clamp the diaphragm so that the diaphragm can be better wound onto the battery cell.

[0051] In this embodiment, the first interval is between 0.1 mm and 1.0 mm, preferably 0.5 mm, so as to achieve the purpose of smoothing the diaphragm without affecting the normal passage of the diaphragm.

[0052] In this embodiment, the smoothing plate 400 is made of a wool sticky board, which is low in cost and easy to obtain. Of course, in other optional embodiments, the smoothing plate 400 can also be made of other materials, which is not limited here.

[0053] Continuing with FIG6 , in this embodiment, the synchronous assembly 500 specifically includes a pulley 510 and a synchronous belt 520. The pulley 510 is fixed above the upper platen 200. The first end of the synchronous belt 520 is connected to the smoothing plate 400, and the second end of the synchronous belt 520 is connected to the lower platen 300 after being reversed by the pulley 510.

[0054] Thus, when the lower platen 300 rises, the second end of the synchronous belt 520 rises with the lower platen 300, and the first end of the synchronous belt 520 descends, causing the smoothing plate 400 connected to the first end of the synchronous belt 520 to descend; when the lower platen 300 descends, the second end of the synchronous belt 520 descends with the lower platen 300, and the first end of the synchronous belt 520 rises, causing the smoothing plate 400 connected to the first end of the synchronous belt 520 to rise. In other words, when the lower platen 300 rises, the smoothing plate 400 descends; when the lower platen 300 descends, the synchronous belt 520 rises.

[0055] Continuing with Figure 6 , in this embodiment, two synchronization assemblies 500 are provided, one on each side of the smoothing plate 400. This provides space above the smoothing plate 400, facilitating the central placement of the drive mechanisms associated with the upper and lower platens 200 and 300. This also ensures smooth vertical movement of the smoothing plate 400 along with the lower platen 300.

[0056] In other embodiments, a single synchronization assembly 500 may be selectively employed and positioned on the left, right, or center of the caressing plate 400. When a single synchronization assembly 500 is employed and positioned on one side of the caressing plate 400, a sliding guide structure is provided on the side of the caressing plate 400 where the synchronization assembly 500 is not positioned, thereby ensuring smooth movement of the caressing plate 400 even when a single synchronization assembly 500 is employed. When a single synchronization assembly 500 is positioned in the center of the caressing plate 400, sliding guide structures are provided on both sides of the caressing plate 400.

[0057] Preferably, in this embodiment, the synchronization assembly 500 also includes an elastic member 123, which is configured to apply an elastic force to the smoothing plate 400 when the lower pressure plate 300 moves toward the upper pressure plate 200, so that the smoothing plate 400 approaches the lower pressure plate 300, thereby forming a first gap between the smoothing plate 400 and the lower pressure plate 300 for the diaphragm to pass through.

[0058] Without the elastic member 123, when the smoothing plate 400 moves upward with the descent of the lower platen 300, the synchronous belt 520 is straightened, allowing the synchronous assembly 500 to drive the smoothing plate 400 to follow normally. However, when the lower platen 300 rises, the external force acting on one end of the synchronous belt 520 disappears, and the tension of the synchronous belt 520 is maintained solely by the gravity of the other end, the smoothing plate 400. If the weight of the smoothing plate 400 is insufficient, the synchronous belt 520 may not be effectively straightened. Consequently, the smoothing plate 400 may not be able to move upward in time when the lower platen 300 descends again, hindering the opening of the smoothing plate 400 and the lower platen 300, and creating the risk of interference between the smoothing plate 400 and the unloading robot. Furthermore, the smoothing plate 400, which descends under gravity, may be hindered by the synchronous belt 520, preventing the smoothing plate 400 from quickly forming the narrow first gap with the lower platen 300, thus affecting the smoothing effect of the smoothing plate 400.

[0059] Based on this, by setting the elastic member 123, the elastic member 123 stores energy when the lower pressure plate 300 and the smoothing plate 400 are relatively opened, and releases the elastic potential energy when the lower pressure plate 300 and the upper pressure plate 200 approach each other, thereby applying a downward elastic force to the smoothing plate 400 to ensure that the smoothing plate 400 can quickly approach the lower pressure plate 300 to complete the smoothing effect, and at the same time can quickly tighten the synchronous belt 520 to ensure the transmission effect of the synchronous belt 520.

[0060] The elastic member 123 can store energy by being compressed or stretched.

[0061] Specifically, the elastic member 123 can be arranged between the lower pressure plate 300 and the smoothing plate 400. When the lower pressure plate 300 descends, the smoothing plate 400 is pulled upward by the synchronous belt 520, thereby realizing the opening of the lower pressure plate 300 and the smoothing plate 400. At this time, the elastic member 123 is stretched to store elastic potential energy; and when the lower pressure plate 300 rises upward, the tension applied by the lower pressure plate 300 on the elastic member 123 is reduced or even disappears. At this time, the stretched elastic member 123 retracts and pulls the smoothing plate 400 down close to the lower pressure plate 300, so that the smoothing plate 400 and the lower pressure plate 300 form a first gap before clamping the diaphragm close to the upper pressure plate 200 to smooth out the curled part of the tail end of the diaphragm, so that the upper pressure plate 200 can quickly and effectively press the tail end of the diaphragm, providing convenience for the hand-tail rolling of the diaphragm.

[0062] The elastic member 123 can also be arranged above the smoothing plate 400. In this case, the elastic member 123 stores energy by being compressed. Specifically, the upper end of the elastic member 123 is fixed relative to the smoothing plate 400 so that the lower end of the elastic member 123 is pressed against the smoothing plate 400. When the lower pressing plate 300 descends, the smoothing plate 400 is pulled upward by the synchronous belt 520, so that the smoothing plate 400 squeezes the elastic member 123, and the elastic member 123 is compressed to store elastic potential energy; when the lower pressing plate 300 moves upward, the tension applied by the synchronous belt 520 on the smoothing plate 400 is reduced or even disappears, and the upper end of the elastic member 123 is fixed. At this time, the elastic member 123 can release the elastic potential energy downward, thereby driving the smoothing plate 400 to move downward, close to the lower pressing plate 300 and forming a first interval on the lower pressing plate 300.

[0063] 4 and 6 , in this embodiment, the elastic member 123 is disposed above the smoothing plate 400 .

[0064] Furthermore, in order to adjust the compression amount of the elastic member 123 to meet the different elastic force requirements of different comforting plates 400, with continued reference to Figures 1 and 3, in this embodiment, a rod 121 is further provided above the comforting plate 400, and a first adjusting member 124 is provided on the rod 121. The upper end of the elastic member 123 is pressed against the first adjusting member. The first adjusting member 124 is configured to be movable along the rod 121 and to form a locking relationship with the rod 121, thereby adjusting the compression amount of the elastic member 123 and, in turn, the elastic force exerted by the elastic member 123 on the comforting plate 400. Specifically, after the first interval between the smoothing plate 400 and the lower pressure plate 300 is fixed, when the first adjusting member 124 moves downward (i.e., approaches the smoothing plate 400), the elastic member 123 is compressed more severely, and the greater the reaction force applied on the smoothing plate 400, that is, the greater the elastic force provided to the smoothing plate 400, so that the smoothing plate 400 can better maintain the interval width with the lower pressure plate 300; conversely, when the first adjusting member 124 moves upward, the length of the space in which the elastic member 123 can be deformed is reduced, the amount of compression is reduced, and the elastic force provided to the smoothing plate 400 is reduced.

[0065] The elastic member 123 may be configured to be hollow so as to be directly sleeved on the rod 121 , thereby reducing the difficulty of installing the elastic member 123 and enabling the elastic member 123 to apply elastic force to the smoothing plate 400 along the rod 121 .

[0066] The elastic member 123 may be a spring, a rubber column or other structural member capable of elastic deformation, and preferably a metal spring is used as the elastic member 123 .

[0067] The locking structure between the first adjusting member 124 and the rod 121 can be a threaded structure, a snap-fit ​​structure or a clamping structure. For ease of implementation, a threaded structure is preferably used. The snap-fit ​​structure can be a snap-fit ​​structure formed by an elastic protrusion and a groove. For example, an elastic protrusion is provided on the first adjusting member 124, and a clamping slot is provided on the rod 121. When the first adjusting member 124 needs to be moved, the elastic protrusion is moved out of the clamping slot. After the first adjusting member 124 is adjusted into place, the elastic protrusion automatically pops out and snaps into the clamping slot. The snap-fit ​​structure can also be some hard limit structures, such as an inverted buckle and a groove with an inclined surface. The clamping structure can be a clamping structure similar to a clip, or a pull-button or knob-type locking structure (see the rod fastening structure of the existing mop telescopic rod for details).

[0068] It should be noted that the above is merely an example of the locking structure between the first adjusting member 124 and the rod 121 , and does not limit the first adjusting member 124 and the rod 121 to adopt the above locking structure.

[0069] 4 and 6 , in this embodiment, the lower end of the rod 121 slides through the comforting plate 400. A second adjusting member 310 is provided on the lower pressing plate 300. The lower end of the rod 121 passes through the comforting plate 400 and is inserted into the second adjusting member 310. The second adjusting member 310 is configured to move along the rod 121 and to form a locking relationship with the rod 121. Thus, the spacing of the first gap between the lower pressing plate 300 and the comforting plate 400 can be adjusted by adjusting the position of the second adjusting member 310 on the rod 121.

[0070] Likewise, the locking structure between the second adjusting member 310 and the rod 121 may be a threaded structure, a snap-fit ​​structure, or a clamping structure. For ease of implementation, a threaded structure is preferably used.

[0071] Furthermore, a sleeve 420 is provided on the caressing plate 400, through which the rod 121 passes. Thus, the caressing plate 400 can be slidably guided by the rod 121. Specifically, taking the rod 121 provided at both ends of the caressing plate 400 as an example, a transition frame 410 is provided at each end of the caressing plate 400, and the sleeve 420 is mounted on the transition frame 410.

[0072] Furthermore, referring to Figures 4 and 6 , in this embodiment, the diaphragm pressure plate mechanism further includes a guide assembly. The guide assembly is arranged parallel to the rod 121. The upper end of the rod 121 is connected to the movable portion of the guide assembly. This provides vertical guidance for the movement of the lower pressure plate 300, allowing for smoother movement.

[0073] The diaphragm pressure plate mechanism also includes a first cylinder 600 and a second cylinder 700. The output shaft of the first cylinder 600 is connected to the upper pressure plate 200 to drive it up or down. The output shaft of the second cylinder 700 is connected to the movable portion of the guide assembly to drive the guide member up or down, thereby driving the lower pressure plate 300 up or down.

[0074] To facilitate understanding, the diaphragm pressure plate mechanism is further explained below with reference to a specific example.

[0075] Referring to Figures 4-6, the diaphragm pressure plate mechanism comprises a main frame 100, on which are disposed a first bracket 110 and a second bracket 120. Both the first bracket 110 and the second bracket 120 are slidably engaged with the main frame 100 via a slide rail assembly. The upper pressure plate 200 is connected to the lower end of the first bracket 110 and slidably engages with the main frame 100 via the first bracket 110. The lower pressure plate 300 is connected to the lower end of the second bracket 120 and slidably engages with the main frame 100 via the second bracket 120. It should be noted that the slide rail assembly herein is the guide assembly described above.

[0076] The first cylinder 600 and the second cylinder 700 are respectively fixed to the front and rear sides of the main frame 100. The output shaft of the first cylinder 600 points directly downward toward the upper platen 200 and is connected thereto. The rod 121 is part of the second bracket 120, and the upper ends of the two rods 121 are connected by a connecting plate 122. The output shaft of the second cylinder 700 is arranged upward and connected to this connecting plate 122. When the output shaft of the second cylinder 700 extends, it drives the lower platen 300 upward. When the output shaft of the second cylinder 700 retracts, it drives the lower platen 300 downward.

[0077] The smoothing plate 400 is sandwiched between the upper pressing plate 200 and the lower pressing plate 300 , and the shaft sleeves 420 at both ends of the smoothing plate 400 are slidably sleeved on the rod 121 of the second bracket 120 .

[0078] Wheel seats 511 are provided on both sides of the upper end of the main frame 100. Pulleys 510 are mounted on the wheel seats 511, and two timing belts 520 are respectively hung on the two pulleys 510. The first ends of the two timing belts 520 are connected to the connecting plate 122 of the second bracket 120 via a belt tightening assembly. The second ends of the two timing belts 520 are connected to the transition frames 410 at both ends of the smoothing plate 400 via two external belt tightening assemblies.

[0079] The working principle of the diaphragm pressure plate mechanism is as follows:

[0080] When taking materials, the first cylinder 600 and the second cylinder 700 drive the upper pressure plate 200 to rise and the lower pressure plate 300 to fall respectively. At the same time, the lower pressure plate 300 drives the smoothing plate 400 to rise through the synchronous belt 520, so that a second gap is formed between the smoothing plate 400 and the lower pressure plate 300 for the unloading robot to pass through the diaphragm pressure plate mechanism to pick up the stacked battery cells.

[0081] When pulling the film, the unloading robot moves the battery cell horizontally through the diaphragm pressing plate mechanism to pull the diaphragm out to a certain length; when the diaphragm is pulled out to the specified length, the diaphragm is cut in a hot-melt form, and the cut diaphragm moves together with the battery cell. Before the tail end of the diaphragm passes through the diaphragm pressing plate mechanism, the second cylinder 700 drives the lower pressing plate 300 to rise to drive the smoothing plate 400 to descend, so that a first interval of about 0.1mm~1.0mm is formed between the lower pressing plate 300 and the smoothing plate 400, so that the tail end of the diaphragm is smoothed by the smoothing plate 400 when passing through the diaphragm pressing plate mechanism.

[0082] During winding, before the tail end of the diaphragm passes through the diaphragm pressure plate mechanism, the first cylinder 600 drives the upper pressure plate 200 to press down, pressing the smoothing plate 400 onto the lower pressure plate 300, thereby pressing the tail end of the diaphragm, so that the winding mechanism at the winding position can smoothly wind the tail film.

[0083] Based on the above-mentioned diaphragm pressure plate mechanism, the third embodiment of the present application also provides a laminating machine, which has all the structures and beneficial effects of the diaphragm pressure plate mechanisms of the above-mentioned first and second embodiments. Please see above for details and will not be elaborated on here.

[0084] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. A diaphragm pressure plate mechanism, characterized in that: include: The upper pressing plate and the lower pressing plate are configured to move toward each other or one of them moves toward the other to jointly compress the diaphragm.

2. The diaphragm pressure plate mechanism according to claim 1, characterized in that: Also includes: Main frame, upper pressure plate bracket, lower pressure plate bracket, reset cylinder and first stopper; The upper pressing plate bracket is slidably mounted on the main frame along the vertical direction; The upper pressing plate is slidably mounted on the upper pressing plate bracket in a horizontal direction; The lower pressure plate bracket is slidably mounted on the main frame along the vertical direction; The lower pressing plate is slidably mounted on the lower pressing plate bracket in a horizontal direction; The reset cylinder is arranged on a side of the upper pressing plate away from the lower pressing plate, the reset cylinder is mounted on the upper pressing plate bracket, and the telescopic end of the reset cylinder is away from a side where the battery cell diaphragm is wound; and The first stopper is arranged on the plate surface of the upper pressing plate facing away from the lower pressing plate, and the first stopper can abut against the telescopic end of the reset cylinder.

3. The diaphragm pressure plate mechanism according to claim 2, characterized in that: Also includes: The second stopper; The second stopper is installed on a side of the upper pressing plate away from the lower pressing plate, and the second stopper is arranged on a side away from the telescopic end of the reset cylinder; The upper pressure plate bracket includes a mounting plate, which is arranged on the side of the upper pressure plate away from the lower pressure plate, the mounting plate is parallel to the upper pressure plate, the length direction of the mounting plate corresponds to the width direction of the diaphragm, the reset cylinder is installed on the mounting plate, and the second stopper can abut against the mounting plate.

4. The diaphragm pressure plate mechanism according to claim 3, characterized in that: The second stopper is provided with a telescopic rod, and the telescopic rod can move horizontally along the length direction of the diaphragm, and one end of the telescopic rod can abut against the mounting plate.

5. The diaphragm pressure plate mechanism according to claim 3, characterized in that: There are two second stoppers, and the two second stoppers are symmetrically arranged on the upper pressing plate along the width direction of the diaphragm.

6. The diaphragm pressure plate mechanism according to any one of claims 2 to 5, characterized in that: Also includes: a first cylinder and a locking device; The first cylinder is mounted on the lower pressing plate bracket, the telescopic end of the first cylinder is connected to the lower pressing plate in the horizontal direction, the telescopic end faces the side away from the winding of the battery cell diaphragm, and the telescopic end of the first cylinder extends to a set position before the diaphragm starts to wind; The locking device is used to lock the upper pressing plate and the lower pressing plate in a mirror-symmetrical manner in the horizontal direction to selectively press the diaphragm.

7. The diaphragm pressure plate mechanism according to claim 6, characterized in that: The locking device comprises: a positioning pin and a positioning hole; The positioning pin is arranged on a side of the upper pressing plate facing the lower pressing plate; The positioning hole is locked with the positioning pin, and the positioning hole is arranged on a side of the lower pressing plate facing the upper pressing plate.

8. The diaphragm pressure plate mechanism according to claim 7, characterized in that: Also includes: Distance measuring sensor, pressure regulating valve and solenoid proportional valve; The distance measuring sensor is installed on the lower pressing plate bracket and is used to measure the distance the lower pressing plate moves in the horizontal direction; The pressure regulating valve is connected to the first cylinder gas circuit; The electromagnetic proportional valve is electrically connected to the distance measuring sensor and the pressure regulating valve. The distance measuring sensor is provided with a preset distance value, and the electromagnetic proportional valve is provided with a first preset value, wherein the first preset value corresponds to the maximum tension set during the winding process of the diaphragm. The distance measured by the distance measuring sensor is less than the preset distance value. The electromagnetic proportional valve adjusts the first cylinder through the pressure regulating valve and then adjusts the diaphragm tension. The electromagnetic proportional valve automatically alarms when the value exceeds the first preset value.

9. The diaphragm pressure plate mechanism according to claim 8, characterized in that: Also included: tension calibration sensor and mount; The tension calibration sensor is used to calibrate the tension exerted on the lower pressing plate in the horizontal direction; The tension calibration sensor is installed on the mounting seat in a horizontally movable manner, and the mounting seat is installed on the lower pressure plate bracket. The electromagnetic proportional valve is also provided with a second preset value, which is smaller than the first preset value, and the diaphragm tension corresponding to the second preset value is the same as the tension exerted on the lower pressing plate calibrated by the tension calibration sensor.

10. The diaphragm pressure plate mechanism according to claim 8, characterized in that: Also includes: A second connecting plate; The second connecting plate is installed on a side of the lower pressing plate away from the battery cell winding diaphragm. The second connecting plate is opposite to the distance measuring sensor along the length direction of the diaphragm. The distance measuring sensor is used to measure the distance to the second connecting plate.

11. The diaphragm pressure plate mechanism according to claim 1 or 2, characterized in that: A smoothing plate is sandwiched between the upper pressing plate and the lower pressing plate, and the smoothing plate is connected to the lower pressing plate through a synchronization component, and the synchronization component is configured to drive the smoothing plate to approach or move away from the lower pressing plate when the lower pressing plate moves, so that the smoothing plate and the lower pressing plate form a first gap for the diaphragm to pass through before the lower pressing plate and the upper pressing plate clamp the diaphragm, or form a second gap for the unloading robot to pass through when the lower pressing plate and the upper pressing plate are opened.

12. The diaphragm pressure plate mechanism according to claim 11, characterized in that: The first interval is 0.1 mm to 1.0 mm.

13. The diaphragm pressure plate mechanism according to claim 11, characterized in that: The synchronous assembly includes a pulley and a synchronous belt. The pulley is fixed above the upper pressure plate. The first end of the synchronous belt is connected to the smoothing plate. The second end of the synchronous belt is connected to the lower pressure plate after the pulley is reversed.

14. The diaphragm pressure plate mechanism according to claim 13, characterized in that: There are two synchronous components, which are arranged on both sides of the smoothing plate.

15. The diaphragm pressure plate mechanism according to claim 13 or 14, characterized in that: The synchronization assembly further includes an elastic member configured to apply an elastic force to the stroking plate when the lower pressing plate moves toward the upper pressing plate, so that the stroking plate approaches the lower pressing plate, thereby forming a first gap between the stroking plate and the lower pressing plate for the diaphragm to pass through.

16. The diaphragm pressure plate mechanism according to claim 15, characterized in that: A rod is arranged above the smoothing plate, and a first adjusting member is arranged on the rod. When the first adjusting member moves along the rod, the deformation amount of the elastic member can be adjusted.

17. The diaphragm pressure plate mechanism according to claim 16, characterized in that: The lower pressing plate is provided with a second adjusting member, the lower end of the rod slides through the smoothing plate and is connected to the second adjusting member, and the second adjusting member can adjust the first interval between the smoothing plate and the lower pressing plate when moving along the guide rod.

18. The diaphragm pressure plate mechanism according to claim 16, characterized in that: It also includes a guide assembly, which is arranged parallel to the rod, and the upper end of the rod is connected to the movable part of the guide assembly.

19. The diaphragm pressure plate mechanism according to claim 18, characterized in that: It also includes a first cylinder and a second cylinder, wherein the output shaft of the first cylinder is connected to the upper pressing plate, and the output shaft of the second cylinder is connected to the movable part of the guide assembly.

20. The diaphragm pressure plate mechanism according to claim 1, characterized in that: Also includes: Main frame, upper pressure plate bracket, lower pressure plate bracket, reset cylinder and first stopper; The upper pressing plate bracket is slidably mounted on the main frame along the vertical direction; The upper pressing plate is slidably mounted on the upper pressing plate bracket in a horizontal direction; The lower pressure plate bracket is slidably mounted on the main frame along the vertical direction; The lower pressing plate is slidably mounted on the lower pressing plate bracket in a horizontal direction; The reset cylinder is arranged on a side of the upper pressing plate away from the lower pressing plate, the reset cylinder is mounted on the upper pressing plate bracket, and the telescopic end of the reset cylinder is away from a side where the battery cell diaphragm is wound; and The first stopper is arranged on the plate surface of the upper pressing plate facing away from the lower pressing plate, and the first stopper can abut against the telescopic end of the reset cylinder; A smoothing plate is sandwiched between the upper pressing plate and the lower pressing plate, and the smoothing plate is connected to the lower pressing plate through a synchronization component, and the synchronization component is configured to drive the smoothing plate to approach or move away from the lower pressing plate when the lower pressing plate moves, so that the smoothing plate and the lower pressing plate form a first gap for the diaphragm to pass through before the lower pressing plate and the upper pressing plate clamp the diaphragm, or form a second gap for the unloading robot to pass through when the lower pressing plate and the upper pressing plate are opened.

21. A laminating machine, characterized in that: It comprises a diaphragm pressure plate mechanism as described in any one of claims 1-20.

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