Clamping mechanism and diaphragm tail coiling mechanism

Abstract

The present application discloses a clamping mechanism and a diaphragm tail winding mechanism, belonging to battery production equipment. The clamping mechanism includes a bracket; a clamping assembly, which includes a first clamping assembly and a second clamping assembly that are installed on the bracket and arranged oppositely; a first clamping plate is arranged on the first clamping assembly; a second clamping plate is arranged on the second clamping assembly; the first clamping plate and the second clamping plate are used for clamping materials; and a tension detection device, which is used to detect the static friction force between the clamping assembly and the materials to complete the detection of the tension of the materials. The present application uses the first and second clamping plates to clamp the materials and uses the tension detection device to detect the static friction force between the clamping mechanism and the materials to control the tension of the materials.

Description

Technical Field

[0001] This application belongs to battery production equipment, and particularly relates to a clamping mechanism and a diaphragm tail winding mechanism. Background Art

[0002] When a laminator winds the tail of the diaphragm, it is necessary to wind the cut diaphragm onto the surface of the battery cell. When the battery cell winds the diaphragm, it is necessary to control the tightness of the diaphragm winding so that the diaphragm tension is controlled within a certain range during tail winding.

[0003] In the current technology, the diaphragm tension adjustment mechanism has a complex structure and cannot reliably control the diaphragm tension within a certain range during diaphragm tail winding. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a clamping mechanism and a diaphragm tail winding mechanism so that the tension of the material can be adjusted arbitrarily.

[0005] To solve the above technical problem, the technical solution adopted is: a clamping mechanism, comprising:

[0006] A bracket;

[0007] A clamping assembly, which includes a first clamping assembly and a second clamping assembly that are installed on the bracket and arranged oppositely; a first clamping plate is arranged on the first clamping assembly; a second clamping plate is arranged on the second clamping assembly; the first clamping plate and the second clamping plate are used to clamp the material; and

[0008] A tension detection device, which is used to detect the static friction force between the clamping assembly and the material to complete the detection of the material tension.

[0009] As a further improvement of the above technical solution: the first clamping assembly includes a first support seat slidably connected to the bracket, a first driving device for driving the first support seat to slide on the bracket, and the first clamping plate slidably connected to the first support seat; the second clamping assembly includes a second support seat fixedly connected to the bracket, and the second clamping plate slidably connected to the second support seat; the sliding direction of the first clamping plate on the first support seat is different from the sliding direction of the first support seat on the bracket;

[0010] Or, the first clamping assembly includes a first support seat fixedly connected to the bracket, and the first clamping plate slidably connected to the first support seat; the second clamping assembly includes a second support seat slidably connected to the bracket, a second driving device for driving the second support seat to slide on the bracket, and the second clamping plate slidably connected to the second support seat; the sliding direction of the second clamping plate on the second support seat is different from the sliding direction of the second support seat on the bracket;

[0011] Alternatively, the first clamping assembly includes a first support slidably connected to the bracket, a first driving device for driving the first support to slide on the bracket, and the first clamping plate slidably connected to the first support; the second clamping assembly includes a second support slidably connected to the bracket, a second driving device for driving the second support to slide on the bracket, and the second clamping plate slidably connected to the second support; the sliding direction of the first clamping plate on the first support is different from the sliding direction of the first support on the bracket; the sliding direction of the second clamping plate on the second support is different from the sliding direction of the second support on the bracket;

[0012] Wherein, the sliding direction of the first clamping plate on the first support is the same as the sliding direction of the second clamping plate on the second support;

[0013] The tension detection device measures the pulling force on the material when the first clamping plate slides on the first support, and / or measures the pulling force on the material when the second clamping plate slides on the second support, so as to complete the detection of the material tension.

[0014] As a further improvement of the above technical solution: both the first driving device and the second driving device are fixed on the bracket.

[0015] As a further improvement of the above technical solution: the tension detection device includes a first spring stopper fixed on the first support, a first guide rod fixed on the first spring stopper and parallel to the sliding direction of the first clamping plate on the first support, a first spring sleeved on the first guide rod, and a first fixing block fixed on the first clamping plate;

[0016] Alternatively, the tension detection device includes a second spring stopper fixed on the second support, a second guide rod fixed on the second spring stopper and parallel to the sliding direction of the second clamping plate on the second support, a second spring sleeved on the second guide rod, and a second fixing block fixed on the second clamping plate;

[0017] Alternatively, the tension detection device includes a first spring stopper fixed on the first support, a first guide rod fixed on the first spring stopper and parallel to the sliding direction of the first clamping plate on the first support, a first spring sleeved on the first guide rod, a first fixing block fixed on the first clamping plate, a second spring stopper fixed on the second support, a second guide rod fixed on the second spring stopper and parallel to the sliding direction of the second clamping plate on the second support, a second spring sleeved on the second guide rod, and a second fixing block fixed on the second clamping plate;

[0018] The first fixing block is sleeved on the first guide rod. One end of the first spring abuts against or is connected to the first spring stopper, and the other end abuts against or is connected to the first fixing block.

[0019] The second fixing block is sleeved on the second guide rod. One end of the second spring abuts against or is connected to the second spring stopper, and the other end abuts against or is connected to the second fixing block.

[0020] As a further improvement of the above technical solution: The first clamping plate is provided with vacuum adsorption holes on its clamping surface, and the first clamping plate is also provided with a vacuum interface communicated with the vacuum adsorption holes; or, the second clamping plate is provided with vacuum adsorption holes on its clamping surface, and the second clamping plate is also provided with a vacuum interface communicated with the vacuum adsorption holes.

[0021] As a further improvement of the above technical solution: A displacement sensor for detecting the sliding displacement of the first clamping plate is provided on the first support; or, a displacement sensor for detecting the sliding displacement of the second clamping plate is provided on the second support.

[0022] As a further improvement of the above technical solution: A first slider is provided on the first support, and a first guide rail matched with the first slider is provided on the first clamping plate; The first support and the first clamping plate are slidably connected through the first slider and the first guide rail;

[0023] A second slider is provided on the second support, and a second guide rail matched with the second slider is provided on the second clamping plate; The second support and the second clamping plate are slidably connected through the second slider and the second guide rail.

[0024] As a further improvement of the above technical solution: The first clamping plate is provided with a slider stopper for restricting the sliding of the first slider on the first guide rail; or, the second clamping plate is provided with a slider stopper for restricting the sliding of the second slider on the second guide rail.

[0025] As a further improvement of the above technical solution: It further includes a base; The bracket is installed on the base; A third guide rail is provided on the base, a third slider matched with the third guide rail is provided on the bracket, and the bracket is fixed on the base through the cooperation of the third guide rail and the third slider; A driving component for driving the bracket to slide on the base is provided on the base.

[0026] To solve the above technical problems, the technical solution adopted is: A diaphragm tail winding mechanism includes the clamping mechanism described above; It further includes:

[0027] A fourth guide rail

[0028] The jaw assembly is arranged on the fourth guide rail and is slidably connected to the fourth guide rail for clamping the stacked battery cells.

[0029] The tail winding assembly is arranged above the fourth guide rail for clamping the stacked battery cells conveyed by the jaw assembly and for performing diaphragm tail winding on the stacked battery cells.

[0030] The diaphragm clamping and conveying assembly is used to drive the clamping mechanism to move and to control the tension of the diaphragm. It is arranged on the fourth guide rail; and

[0031] The jaw conveying assembly is used to drive the jaw assembly to move. It is arranged on the fourth guide rail.

[0032] The clamping mechanism is slidably connected to the fourth guide rail; the clamping mechanism is used to clamp the diaphragm dragged by the stacked battery cells.

[0033] Adopting the technical solution of the present application, the beneficial effects are as follows: The present application uses the first and second clamping plates to clamp the material, and uses the tension detection device to detect the static friction force between the clamping mechanism and the material to control the tension of the material. Description of the Drawings

[0034] Figure 1 is a side view of the clamping mechanism in an embodiment of the present application;

[0035] Figure 2 and Figure 1 is similar to it, and it is the Figure 1 front view of the clamping mechanism in

[0036] Figure 3 is a structural schematic diagram of the diaphragm tail winding mechanism in an embodiment of the present application;

[0037] Among them, 1. Clamping mechanism; 111. First support; 112. First driving device; 113. First clamping plate; 114. First spring; 115. First guide rod; 116. First fixing block; 117. First slider; 118. First guide rail; 119. First spring stopper; 121. Second support; 122. Second driving device; 123. Second clamping plate; 124. Second spring; 125. Second guide rod; 126. Second fixing block; 127. Second slider; 128. Second guide rail; 129. Second spring stopper; 130. Slider stopper; 131. Displacement sensor; 132. Vacuum adsorption hole; 133. Vacuum interface; 140. Support; 151. Driving assembly; 152. Lead screw; 153. Connecting piece; 161. Third slider; 162. Third guide rail; 171. Base; 2. Jaw assembly; 3. Tail coil assembly; 301. First tail coil piece; 302. Second tail coil piece; 4. Diaphragm clamping and conveying assembly; 401. First belt; 402. First pulley; 403. First motor; 5. Fourth guide rail; 510. Linear rail; 520. Linear rail seat; 6. Jaw conveying assembly; 601. Second belt; 602. Second pulley; 603. Second motor. Detailed implementation mode

[0038] As used herein, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present application. The phrase appears at various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0039] It should be noted that the terms "first", "second", etc. herein and hereinafter are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the described features.

[0040] In one embodiment of the present application, the clamping mechanism 1 may include:

[0041] Support 140;

[0042] A clamping assembly, which may include a first clamping assembly and a second clamping assembly that are mounted on the support 140 and are oppositely arranged; a first clamping plate 113 is provided on the first clamping assembly; a second clamping plate 123 is provided on the second clamping assembly; the first clamping plate 113 and the second clamping plate 123 are used for clamping the material; and

[0043] A tension detection device, which is used to detect the static friction force between the clamping assembly and the material to complete the detection of the material tension.

[0044] In this embodiment, the clamping mechanism 1 uses the first and second clamping plates 113 and 123 to clamp the material, and uses a tension detection device to detect the static friction force between the clamping mechanism and the material, so as to control the tension of the material according to the magnitude of the static friction force.

[0045] In one embodiment, the first clamping assembly may include a first support 111 slidably connected to the bracket 140, a first driving device 112 for driving the first support 111 to slide on the bracket 140, and a first clamping plate 113 slidably connected to the first support 111; the second clamping assembly may include a second support 121 fixedly connected to the bracket 140, and a second clamping plate 123 slidably connected to the second support 121; the sliding direction of the first clamping plate 113 on the first support 111 is different from the sliding direction of the first support 111 on the bracket 140;

[0046] Or, the first clamping assembly may include a first support 111 fixedly connected to the bracket 140, and a first clamping plate 113 slidably connected to the first support 111; the second clamping assembly may include a second support 121 slidably connected to the bracket 140, a second driving device 122 for driving the second support 121 to slide on the bracket 140, and a second clamping plate 123 slidably connected to the second support 121; the sliding direction of the second clamping plate 123 on the second support 121 is different from the sliding direction of the second support 121 on the bracket 140;

[0047] Or, the first clamping assembly may include a first support 111 slidably connected to the bracket 140, a first driving device 112 for driving the first support 111 to slide on the bracket 140, and a first clamping plate 113 slidably connected to the first support 111; the second clamping assembly may include a second support 121 slidably connected to the bracket 140, a second driving device 122 for driving the second support 121 to slide on the bracket 140, and a second clamping plate 123 slidably connected to the second support 121; the sliding direction of the first clamping plate 113 on the first support 111 is different from the sliding direction of the first support 111 on the bracket 140; the sliding direction of the second clamping plate 123 on the second support 121 is different from the sliding direction of the second support 121 on the bracket 140.

[0048] In any of the above three setting methods, the sliding direction of the first clamping plate 113 on the first support 111 is the same as the sliding direction of the second clamping plate 123 on the second support 121; the tension detection device measures the pulling force of the first clamping plate 113 sliding on the first support 111 on the material, and / or measures the pulling force of the second clamping plate 123 sliding on the second support 121 on the material, so as to complete the detection of the material tension.

[0049] In this embodiment, the first and second clamping plates 113 and 123 clamp the material and can slide in the same direction. When the first and second clamping plates 113 and 123 slide simultaneously, the material will be pulled, thereby applying a pulling force that affects the tension of the material. At this time, the tension detection device can detect the pulling force between the first and second clamping plates 113 and 123 and the material. When there is no relative sliding between the material and the first clamping plate, that is, the static friction force between the first and second clamping plates 113 and 123 and the material is detected; the tension of the material is affected through the detection result; the tension of the material can be controlled within a certain range through the detection result of the tension detection device.

[0050] In one embodiment, the first driving device 112 and the second driving device 122 are both fixed on the bracket 140. So as to better control the clamping force of the first clamping plate 113 and the second clamping plate 123 on the material. The first driving device 112 and the second driving device 122 can both be cylinders, and the cylinders are fixed on the bracket 140. The first support 111 and the second support 121 slide through the piston rods.

[0051] In addition, for any material that needs to control the internal tension, the clamping mechanism 1 described above can be used. For example, one end of the material is fixed to an object, such as a wall, and the other end is clamped by the first and second clamping plates 113 and 123. The internal tension of the material can be kept constant under the action of the tension detection device; for example, the clamping mechanism 1 pulls the material. At this time, the tension detection device detects, and according to the detected value, the displacement and displacement direction of the clamping mechanism 1 are adjusted, thereby affecting the tension of the material, and then stabilizing at a predetermined tension.

[0052] As Figure 1 shown, the sliding direction of the first clamping plate 113 on the first support 111 is perpendicular to the sliding direction of the first support 111 on the bracket 140; the sliding direction of the first clamping plate 113 on the first support 111 is the same as the sliding direction of the second clamping plate 123 on the second support 121. The Two sliding direction of the second clamping plate 123 on the second support 121 is perpendicular to the sliding direction of the second support 121 on the bracket 140; in this way, it can be ensured that the first clamping plate 113 and the second clamping plate 123 squeeze each other, so as to better clamp the material.

[0053] In one embodiment, the tension detection device may include a first spring stopper 119 fixed on the first support 111, a first guide rod 115 fixed on the first spring stopper 119 and parallel to the sliding direction of the first clamping plate 113 on the first support 111, a first spring 114 sleeved on the first guide rod 115, and a first fixing block 116 fixed on the first clamping plate 113;

[0054] Alternatively, the tension detection device may include a second spring stopper 129 fixed to the second support 121, a second guide rod 125 fixed to the second spring stopper 129 and parallel to the sliding direction of the second clamping plate 123 on the second support 121, a second spring 124 sleeved on the second guide rod 125, and a second fixing block 126 fixed to the second clamping plate 123;

[0055] Alternatively, the tension detection device may include a first spring stopper 119 fixed to the first support 111, a first guide rod 115 fixed to the first spring stopper 119 and parallel to the sliding direction of the first clamping plate 113 on the first support 111, a first spring 114 sleeved on the first guide rod 115, a first fixing block 116 fixed to the first clamping plate 113, a second spring stopper 129 fixed to the second support 121, a second guide rod 125 fixed to the second spring stopper 129 and parallel to the sliding direction of the second clamping plate 123 on the second support 121, a second spring 124 sleeved on the second guide rod 125, and a second fixing block 126 fixed to the second clamping plate 123.

[0056] In any of the above three setting methods, the first fixing block 116 is sleeved on the first guide rod 115, one end of the first spring 114 abuts or is connected to the first spring stopper 119, and the other end abuts or is connected to the first fixing block 116; the second fixing block 126 is sleeved on the second guide rod 125, one end of the second spring 124 abuts or is connected to the second spring stopper 129, and the other end abuts or is connected to the second fixing block 126.

[0057] In this embodiment, the tension borne by the material can be observed by stretching or compressing the first and second springs 114 and 124; since the first and second springs 114 and 124 can visualize the tension borne by the material, the corresponding tension data can be obtained more intuitively, which is more conducive to the adjustment of the material tension.

[0058] The clamping mechanism 1 disclosed in this embodiment can be used as a device for buffering the pulling force when dragging an object; for example, when dragging a material, at the beginning of dragging the material, it may cause an instantaneous excessive impulse to the material, which may cause the material that is easily damaged to be damaged. At this time, the tension detection device can buffer the instantaneous excessive impulse, so that the material can be in a safe dragged state; of course, this clamping mechanism 1 can also be applied to other scenarios, which are not limited here.

[0059] In this embodiment, as Figure 1As shown, the first support 111 can be in the shape of "└". One side of it is slidably connected to the bracket 140. For the sliding connection, the connection form of a slider and a slide rail can be adopted. The other side is slidably connected to the first clamping plate 113, and one end extends out a first spring stopper 119 towards the side of the first clamping plate 113. For the first spring 114, a tension spring or a compression spring can be used, and there is no limitation. It is used according to specific situations. The second support 121 is arranged opposite to the first support 111, and the second support 121, the second spring 124 and the second spring stopper 129 are designed using the same structural principle, so no more details will be elaborated here.

[0060] In this embodiment, in order to better control the first and second springs 114 and 124, the first and second fixing blocks 116 and 126 are respectively provided with through holes, so that the first guide rod 115 passes through the through hole of the first fixing block 116, and the second guide rod 125 passes through the through hole of the second fixing block 126. In this way, it can be ensured that the first and second springs 114 and 124 are stably compressed or stretched in the sliding direction of the first and second clamping plates 113 and 123.

[0061] In one embodiment, the first clamping plate 113 is provided with vacuum adsorption holes 132 on its clamping surface, and the first clamping plate 113 is further provided with a vacuum interface 133 communicated with the vacuum adsorption holes 132; or, the second clamping plate 123 is provided with vacuum adsorption holes 132 on its clamping surface, and the second clamping plate 123 is further provided with a vacuum interface 133 communicated with the vacuum adsorption holes 132.

[0062] In this embodiment, for some materials that can cover the vacuum adsorption holes 132 and can be adsorbed by the vacuum adsorption holes 132, when the materials are adsorbed, the clamping force between the materials and the clamping mechanism 1 can be increased; the relative sliding between the materials and the first and second clamping plates 113 and 123 is avoided. Here, the vacuum interface 133 can be connected to a device such as a vacuum pump that can extract the air on one side of the vacuum adsorption holes 132.

[0063] In one embodiment, a displacement sensor 131 for detecting the sliding displacement of the first clamping plate 113 is arranged on the first support 111; or a displacement sensor 131 for detecting the sliding displacement of the second clamping plate 123 is arranged on the second support 121.

[0064] In this embodiment, by setting the displacement sensor 131, the displacements of the first and second clamping plates 113 and 123 relative to the first and second supports 111 and 121 can be obtained through devices such as a computer, and then the tension of the material can be calculated by combining the elastic coefficients of the first and second springs 114 and 124.

[0065] In one embodiment, a first slider 117 is provided on the first support 111, and a first guide rail 118 cooperating with the first slider 117 is provided on the first clamping plate 113; the first support 111 and the first clamping plate 113 are slidably connected through the first slider 117 and the first guide rail 118; a second slider 127 is provided on the second support 121, and a second guide rail 128 cooperating with the second slider 127 is provided on the second clamping plate 123; the second support 121 and the second clamping plate 123 are slidably connected through the second slider 127 and the second guide rail 128. Sliding is achieved through the cooperation of the slider and the guide rail.

[0066] In one embodiment, the first clamping plate 113 is provided with a slider stopper 130 on the first guide rail 118 to limit the sliding of the first slider 117; or the second clamping plate 123 is provided with a slider stopper 130 on the second guide rail 128 to limit the sliding of the second slider 127.

[0067] In this embodiment, by using the slider stopper 130, the mutual detachment of the first slider 117 and the first guide rail 118 can be avoided, and the mutual detachment of the second slider 127 and the second guide rail 128 can also be avoided.

[0068] In one embodiment, the clamping mechanism 1 may further include a base 171; the bracket 140 is installed on the base 171; a third guide rail 162 is provided on the base 171, and a third slider 161 cooperating with the third guide rail 162 is provided on the bracket 140, and the bracket 140 is fixed on the base 171 through the cooperation of the third guide rail 162 and the third slider 161; a driving component 151 for driving the bracket 140 to slide on the base 171 is provided on the base 171.

[0069] In this embodiment, as Figure 2 shown, it is similar to Figure 1 and discloses Figure 1 the front view of the clamping mechanism 1 in

[0070] In this embodiment, a stepper motor or a servo motor is adopted; its rotating shaft is connected to a lead screw 152, and the lead screw 152 is erected on the base 171 and can be driven by the driving component 151 to rotate; a connecting member 153 is provided at the lower part of the bracket 140, and the connecting member 153 is threadedly connected to the lead screw 152; thus, combined with the third guide rail 162 and the third slider 161, the bracket 140 can be moved by the driving component 151.

[0071] Driven by the driving component 151, the bracket 140 undergoes displacement. For some materials, it is necessary to maintain tension in one direction. However, when the material is offset, it will affect the material. The relative displacement between the bracket 140 and the base 171 can adjust the direction of the tension. Here, the direction in which the bracket 140 can be displaced by the driving component 151 is perpendicular to the sliding direction of the first clamping plate 113 on the first support 111.

[0072] In one embodiment, as Figure 3 shown, it discloses a structural schematic diagram of a diaphragm tail winding mechanism in an embodiment of the present application. It adopts the clamping mechanism 1 described in the above embodiment to control the diaphragm tension. At the same time, the diaphragm tail winding mechanism may further include

[0073] a fourth guide rail 5,

[0074] a jaw assembly 2, which is arranged on the fourth guide rail 5 and is slidably connected to the fourth guide rail 5 for clamping the stacked battery cells;

[0075] a tail winding assembly 3, arranged above the fourth guide rail 5, for clamping the stacked battery cells conveyed by the jaw assembly 2 and performing diaphragm tail winding on the stacked battery cells;

[0076] a diaphragm conveying assembly 4, used to drive the clamping mechanism to move and control the tension of the diaphragm, which is arranged on the fourth guide rail 5; and

[0077] a jaw conveying assembly 6, used to drive the jaw assembly 2 to move, which is arranged on the fourth guide rail 5;

[0078] The clamping mechanism is slidably connected to the fourth guide rail 5; the clamping mechanism is used to clamp the diaphragm dragged by the stacked battery cells.

[0079] In this embodiment, the sliding direction of the clamping mechanism 1 on the fourth guide rail 5 is the same as the sliding direction of the first clamping plate 113 on the first support 111; ensuring that the tension of the diaphragm can be effectively adjusted.

[0080] In this embodiment, the production of stacked battery cells is completed using the positive and negative plates and the diaphragm. The jaw assembly 2, such as a mechanical jaw, clamps the stacked battery cells. The jaw conveying assembly 6 is activated. Under the conveyance of the jaw conveying assembly 6, such as a conveyor belt or a synchronous belt, the jaw assembly 2 clamping the stacked battery cells will move on the fourth guide rail 5 towards the tail winding assembly 3;

[0081] During this process, the diaphragm dragged by the stacked battery cells will pass through between the first and second clamping plates 113 and 123; when the diaphragm is dragged to a certain length sufficient to complete tail winding, the first and second clamping plates 113 and 123 clamp the diaphragm, and a diaphragm cutter is used to cut the diaphragm;

[0082] When the length of the diaphragm required to complete the tail roll is less than the distance between the clamping mechanism 1 and the tail roll assembly 3, the clamping mechanism 1 will be conveyed by the diaphragm conveying assembly 4, such as a conveyor belt or a synchronous belt, when clamping the diaphragm, and the clamping mechanism 1 moves towards the tail roll assembly 3 along with the jaw assembly 2; if the clamping force of the first and second clamping plates 113 and 123 on the diaphragm is insufficient, the vacuum adsorption holes 132 can be used for adsorption;

[0083] When the jaw assembly 2 clamping the stacked battery cells moves to one side of the tail roll assembly 3; the tail roll assembly 3 will clamp the stacked battery cells to perform diaphragm tail rolling;

[0084] When the tail roll assembly 3 performs diaphragm tail rolling, the clamping mechanism 1 slides towards the tail roll assembly 3 in coordination with the tail roll speed of the tail roll assembly 3, always keeping the diaphragm under a constant tension during the tail roll process. It controls the tension of the diaphragm by controlling the moving speed of the clamping mechanism 1 and coordinating with the tension detection device to ensure the quality of the diaphragm tail roll; when the diaphragm deviates in the width direction, the deviation can be corrected through the action of the lead screw 152 and the connecting member 153;

[0085] After completing the diaphragm tail roll, the clamping mechanism 1 resets; the jaw assembly 2 clamps the tail rolled battery cells on the tail roll assembly 3 and continues to slide on the fourth guide rail 5 to convey the tail rolled battery cells to the next process; then the jaw assembly 2 resets.

[0086] For the tail roll assembly 3, it can be composed of a first tail roll member 301 and a second tail roll member 302. The first tail roll member 301 and the second tail roll member 302 are relatively arranged on both sides of the fourth guide rail 5; for the first tail roll member 301 and the second tail roll member 302, they can be a combination of a stepping motor and a cylinder. The cylinder is used to drive the stepping motor to move to realize the clamping of the stacked battery cells, and the rotation of the stepping motor can complete the diaphragm tail roll. Of course, it can also be other structures, as long as they can realize the functions of clamping the stacked battery cells and diaphragm tail rolling, they can be used. Of course, the existing diaphragm tail roll mechanisms in the prior art can also be used, and no specific limitation is made here.

[0087] For the diaphragm conveying assembly 4, it can include a first belt 401, a first pulley 402 and a first motor 403; there are two first pulleys 402, which can be arranged on the fourth guide rail 5. The first belt 401 is sleeved on the first pulleys 402, and the first belt 401 is fixed to the base 171. The first motor 403 drives the first pulleys 402 to rotate, and then the first belt 401 drives the clamping mechanism 1 to move.

[0088] For the gripper transfer assembly 6, it may include a second belt 601, second pulleys 602, and a second motor 603; there are two second pulleys 602, which can be arranged on the fourth guide rail 5. The second belt 601 is sleeved on the second pulleys 602. The second belt 601 is fixed to the bottom of the gripper assembly 2. The second motor 603 drives the second pulleys 602 to rotate, and then the second belt 601 drives the gripper assembly 2 to move.

[0089] For the first and second belts 401 and 601, they can both be synchronous belts or conveyor belts.

[0090] For the fourth guide rail 5, its bottom is a linear rail seat 520, and a linear rail 510 is laid on the linear rail seat 520.

[0091] The process of the clamping mechanism 1 adjusting the diaphragm tension in the diaphragm tail winding mechanism is as follows:

[0092] As Figure 3 shown, one end of the diaphragm is dragged by the tail winding assembly 3 to perform diaphragm tail winding, and the other end is clamped by the first clamping plate 113 and the second clamping plate 123 of the clamping mechanism 1; the diaphragm transfer assembly 4 drives the clamping mechanism 1 to move;

[0093] If the diaphragm tension is too high at this time, it is because the diaphragm tail winding speed is greater than the moving speed of the clamping mechanism 1. The diaphragm drags the first clamping plate 113 and the second clamping plate 123 to slide towards the tail winding assembly 3. At this time, the first spring 114 and the second spring 124 (as Figure 1 shown) will be compressed, and the compression degree of the spring is greater than the spring compression degree corresponding to the predetermined diaphragm tension; the spring plays a buffering role to prevent the diaphragm from being broken and also detects the diaphragm tension; at this time, it is necessary to adjust the moving speed of the clamping mechanism 1, such as increasing it; so that the spring returns to the compression degree corresponding to the predetermined diaphragm tension, and then ensure that the diaphragm tail winding speed is consistent with the moving speed of the clamping mechanism 1;

[0094] If the diaphragm tension is too low at this time, it is because the diaphragm tail winding speed is less than the moving speed of the clamping mechanism 1. The diaphragm drags the first clamping plate 113 and the second clamping plate 123 to slide towards the tail winding assembly 3. At this time, the first spring 114 and the second spring 124 (as Figure 1 shown) will be compressed, and the compression degree of the spring is less than the spring compression degree corresponding to the predetermined diaphragm tension; at this time, it is necessary to adjust the moving speed of the clamping mechanism 1, such as decreasing it; so that the spring returns to the compression degree corresponding to the predetermined diaphragm tension, and then ensure that the diaphragm tail winding speed is consistent with the moving speed of the clamping mechanism 1.

[0095] Thus, the adjustment of the diaphragm tension is completed in the diaphragm tail winding mechanism.

[0096] In summary, it is easy for those skilled in the art to understand that in the present application, the first and second clamping plates 113 and 123 clamp the material, and the other end of the material is dragged by other objects. The tension detection devices provided on the first support 111 and the second support 121 can, based on the results of the tension detection of the material by the tension detection devices, adjust the tension of the material by changing the moving speed, moving direction, or displacement length of the clamping mechanism 1. In such a repeated measurement and adjustment process, the tension of the material can be controlled within a certain range.

[0097] The above are only embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall equally be included in the patent protection scope of the present application.

Claims

1. A clamping mechanism, characterized in that, Comprising: A bracket; A clamping assembly, including a first clamping assembly and a second clamping assembly which are mounted on the bracket and arranged oppositely; a first clamping plate is slidably arranged on the first clamping assembly; a second clamping plate is slidably arranged on the second clamping assembly; the first clamping plate and the second clamping plate are used for clamping the material, the first clamping plate and the second clamping plate can slide in the same sliding direction, and the sliding direction of the first clamping plate and the second clamping plate is different from the direction in which the first clamping plate and the second clamping plate clamp the material; A tension detection device, which is used to detect the static friction force between the clamping assembly and the material so as to complete the detection of the material tension, and the clamping mechanism controls the material tension in response to the result detected by the tension detection device.

2. The clamping mechanism according to claim 1, characterized in that, The first clamping assembly includes a first support seat slidably connected to the bracket, a first driving device for driving the first support seat to slide on the bracket, and the first clamping plate slidably connected to the first support seat; the second clamping assembly includes a second support seat fixedly connected to the bracket, and the second clamping plate slidably connected to the second support seat; the sliding direction of the first clamping plate on the first support seat is different from the sliding direction of the first support seat on the bracket; Or, the first clamping assembly includes a first support seat fixedly connected to the bracket, and the first clamping plate slidably connected to the first support seat; the second clamping assembly includes a second support seat slidably connected to the bracket, a second driving device for driving the second support seat to slide on the bracket, and the second clamping plate slidably connected to the second support seat; the sliding direction of the second clamping plate on the second support seat is different from the sliding direction of the second support seat on the bracket; Or, the first clamping assembly includes a first support seat slidably connected to the bracket, a first driving device for driving the first support seat to slide on the bracket, and the first clamping plate slidably connected to the first support seat; the second clamping assembly includes a second support seat slidably connected to the bracket, a second driving device for driving the second support seat to slide on the bracket, and the second clamping plate slidably connected to the second support seat; the sliding direction of the first clamping plate on the first support seat is different from the sliding direction of the first support seat on the bracket; the sliding direction of the second clamping plate on the second support seat is different from the sliding direction of the second support seat on the bracket; Wherein, the sliding direction of the first clamping plate on the first support seat is the same as the sliding direction of the second clamping plate on the second support seat; The tension detection device measures the pulling force of the first clamping plate sliding on the first support seat on the material, and / or measures the pulling force of the second clamping plate sliding on the second support seat on the material, so as to complete the detection of the material tension.

3. The clamping mechanism according to claim 2, wherein, Both the first driving device and the second driving device are fixed on the bracket.

4. The clamping mechanism according to claim 2, wherein The tension detection device includes a first spring stopper fixed to the first support, a first guide rod fixed to the first spring stopper and parallel to the sliding direction of the first clamping plate on the first support, a first spring sleeved on the first guide rod, and a first fixing block fixed to the first clamping plate. The first fixing block is sleeved on the first guide rod. One end of the first spring abuts or is connected to the first spring stopper, and the other end abuts or is connected to the first fixing block; And / or, the tension detection device includes a second spring stopper fixed to the second support, a second guide rod fixed to the second spring stopper and parallel to the sliding direction of the second clamping plate on the second support, a second spring sleeved on the second guide rod, and a second fixing block fixed to the second clamping plate. The second fixing block is sleeved on the second guide rod. One end of the second spring abuts or is connected to the second spring stopper, and the other end abuts or is connected to the second fixing block.

5. The clamping mechanism according to any one of claims 1-4, characterized in that, Vacuum adsorption holes are provided on the clamping surface of the first clamping plate, and the first clamping plate is further provided with a vacuum interface communicated with the vacuum adsorption holes; or, vacuum adsorption holes are provided on the clamping surface of the second clamping plate, and the second clamping plate is further provided with a vacuum interface communicated with the vacuum adsorption holes.

6. The clamping mechanism according to any one of claims 2-4, characterized in that, A displacement sensor for detecting the sliding displacement of the first clamping plate is provided on the first support; or, a displacement sensor for detecting the sliding displacement of the second clamping plate is provided on the second support.

7. The clamping mechanism according to any one of claims 2-4, characterized in that, A first slider is provided on the first support, and a first guide rail matched with the first slider is provided on the first clamping plate; the first support and the first clamping plate are slidably connected through the first slider and the first guide rail; A second slider is provided on the second support, and a second guide rail matched with the second slider is provided on the second clamping plate; the second support and the second clamping plate are slidably connected through the second slider and the second guide rail.

8. The clamping mechanism according to claim 7, wherein The first clamping plate is provided with a slider stopper for restricting the sliding of the first slider on the first guide rail; or, the second clamping plate is provided with a slider stopper for restricting the sliding of the second slider on the second guide rail.

9. The clamping mechanism according to any one of claims 1-4, characterized in that, It further includes a base; the bracket is installed on the base; a third guide rail is provided on the base, a third slider matched with the third guide rail is provided on the bracket, and the bracket is fixed on the base through the cooperation of the third guide rail and the third slider; a driving component for driving the bracket to slide on the base is provided on the base.

10. A diaphragm tail coiling mechanism, characterized in that, It includes the clamping mechanism according to any one of claims 1-9; the diaphragm tail winding mechanism further includes: A fourth guide rail, A jaw assembly, arranged on the fourth guide rail and slidably connected with the fourth guide rail, for clamping the stacked electrode core; A tail winding assembly, arranged above the fourth guide rail, for clamping the stacked electrode core conveyed by the jaw assembly and for performing diaphragm tail winding on the stacked electrode core; A diaphragm clamping and conveying assembly, for driving the clamping mechanism to move, for controlling the tension of the diaphragm, and arranged on the fourth guide rail; and A jaw conveying assembly, for driving the jaw assembly to move, and arranged on the fourth guide rail; The clamping mechanism is slidably connected to the fourth guide rail; the clamping mechanism is used for clamping the diaphragm dragged by the stacked battery cells.

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