Diaphragm tensioning device and slitting equipment

Abstract

The utility model discloses a diaphragm tensioning device and slitting equipment, the diaphragm tensioning device is arranged in the slitting equipment, and the diaphragm tensioning device comprises a first driving roller, a tensioning mechanism, a second driving roller and a traction assembly; a diaphragm conveying path is formed among the first transmission roller, the tensioning mechanism and the traction assembly, and a GDL film material conveying path is formed between the second transmission roller and the traction assembly. The tensioning mechanism comprises a driving air cylinder, a tensioning roller and a mounted bearing arranged at any end of the tensioning roller. The driving air cylinder is fixed to the inner wall of the slitting equipment, the mounted bearing is connected to the inner wall of the slitting equipment in a sliding mode, and the driving air cylinder is in driving connection with the mounted bearing. After the diaphragm and the GDL film material are separated, the tensioning roller is driven by the air cylinder to tension the diaphragm, and the tensioned diaphragm is coated on the GDL film material again, so that the diaphragm can be prevented from wrinkling and dislocation during splitting, meanwhile, the complexity of splitting operation is reduced, and the splitting processing efficiency is improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of fuel cell production equipment, and in particular to a diaphragm tensioning device and a stripping device. Background Art

[0002] When preparing a fuel cell, the gas diffusion layer (GDL) of the hydrogen fuel cell needs to be cut into strips according to the actual fuel cell size installation requirements. In the actual processing process, when the workpiece membrane is cut into strips, due to the different thicknesses of the diaphragm and the GDL membrane, and the GDL membrane is a brittle material and the diaphragm is a soft material, when the diaphragm and the GDL membrane are cut into strips simultaneously, the diaphragm is prone to wrinkles and misalignment.

[0003] The current stripping method mainly separates the diaphragm and the GDL film material, cuts the GDL film material into strips, and then coats the diaphragm. This method requires repeated positioning to ensure the alignment accuracy of the diaphragm and the GDL film material during coating, resulting in cumbersome GDL film stripping operations and low processing efficiency. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art. The utility model provides a diaphragm tensioning device and a slitting device. After the diaphragm and the GDL film material are separated, the diaphragm is tensioned by a tensioning roller driven by a cylinder, and the tensioned diaphragm is re-coated on the GDL film material, which can avoid wrinkles and misalignment of the diaphragm during slitting, while reducing the cumbersomeness of the slitting operation and improving the slitting processing efficiency.

[0005] The utility model provides a diaphragm tensioning device, which is arranged in a stripping device, and comprises: a first transmission roller, a tensioning mechanism, a second transmission roller and a traction assembly;

[0006] A diaphragm conveying path is formed between the first transmission roller, the tensioning mechanism and the traction assembly, and a GDL film material conveying path is formed between the second transmission roller and the traction assembly;

[0007] The tensioning mechanism comprises: a driving cylinder, a tensioning roller and a seat bearing arranged at either end of the tensioning roller;

[0008] The driving cylinder is fixed on the inner wall of the stripping device, the seat bearing is slidably connected to the inner wall of the stripping device, and the driving cylinder is drivingly connected to the seat bearing.

[0009] Furthermore, a high-precision electrical proportional valve is provided at the output end of the driving cylinder.

[0010] Furthermore, the tensioning mechanism is provided with a guide rail, the guide rail is fixed on the inner side wall of the slitting device, and the seat bearing is slidably fitted on the guide rail based on the slider.

[0011] Furthermore, the tensioning mechanism also includes a buffer, which is arranged below the seat bearing, and the working end of the buffer faces the bottom of the seat bearing.

[0012] Furthermore, the traction assembly includes: a traction roller and a rubber pressure roller, and a preset gap is set between the traction roller and the rubber pressure roller.

[0013] Furthermore, a pressure sensor is provided on the tensioning roller, and the pressure sensor is arranged at the connection position between the tensioning roller and the seat bearing.

[0014] Furthermore, the diaphragm tensioning device is further provided with a first guide roller and a second guide roller, wherein the first guide roller is located on the diaphragm conveying path;

[0015] The second guide roller is arranged at the film material output end of the diaphragm tensioning device.

[0016] The first guide roller is used for feeding and conveying the workpiece film material of the diaphragm tensioning device, and the second guide roller is used for discharging and conveying the workpiece film material of the diaphragm tensioning device.

[0017] Furthermore, the first transmission roller, the second transmission roller and the first guide roller are arranged in a staggered manner from top to bottom.

[0018] The utility model also provides a slitting device, which includes: a film material unwinding assembly, a traction mechanism for driving the workpiece film material to travel, a slitting assembly and the diaphragm tensioning device;

[0019] The diaphragm tensioning device is arranged between the film material unwinding assembly and the traction mechanism.

[0020] Furthermore, the film material unwinding assembly is provided with a left top cone, a right top cone and a lead screw transmission mechanism, and a film material installation station for accommodating a workpiece is formed between the left top cone and the right top cone;

[0021] The lead screw transmission mechanism drives and connects the left top cone and the right top cone.

[0022] The utility model provides a diaphragm tensioning device and a slitting device. After the diaphragm and the GDL film material are separated, the diaphragm is tensioned by a tensioning roller driven by a cylinder, and the tensioned diaphragm is re-coated on the GDL film material, so that wrinkles and misalignment of the diaphragm during slitting can be avoided, and at the same time, the cumbersomeness of the slitting operation is reduced, and the slitting processing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the striping equipment structure in the embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the diaphragm tensioning device in the embodiment of the utility model;

[0026] Figure 3 It is a schematic diagram of the tensioning mechanism structure in an embodiment of the utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Figure 1 A schematic diagram of the structure of a slitting device in an embodiment of the utility model is shown, the slitting device includes: a film unwinding assembly 1, a traction mechanism 3, a diaphragm tensioning device 2 and a slitting assembly 4, the diaphragm tensioning device 2 is arranged between the film unwinding assembly 1 and the traction mechanism 3, the film unwinding assembly 1 is used to provide a workpiece film material, the workpiece film material of the film unwinding assembly 1 is output to the traction mechanism 3, the traction mechanism 3 provides traction for the workpiece film material, so that the workpiece film material can be processed on a tape in the slitting device.

[0029] Furthermore, the diaphragm tensioning device 2 is used to separate the diaphragm and the GDL film material, and to tension the diaphragm so that the diaphragm can be completely attached to the GDL film material. After the diaphragm tensioning device 2 tensions the diaphragm, it re-coats the tensioned diaphragm on the GDL film material, so that the cutting component can perform synchronous cutting operations on the GDL film material and the diaphragm.

[0030] Specifically, the film material unwinding assembly 1 is provided with a left top cone 11, a right top cone 12 and a screw transmission mechanism 13, a film material installation station for accommodating a workpiece is formed between the left top cone 11 and the right top cone 12, the workpiece film material can be clamped on the film material installation station by the left top cone 11 and the right top cone 12, the screw transmission mechanism is provided with a clamping drive motor, a forward and reverse lead screw and two movable sliders threadedly connected to the forward and reverse lead screws, the clamping drive motor is driven and connected to the forward and reverse lead screws, forward threaded screws and reverse threaded screws are provided at both ends of the forward and reverse lead screws, the two movable sliders are respectively threadedly connected to the forward threaded screw and the reverse threaded screw, and when the clamping drive motor drives the forward and reverse lead screws to rotate, the two movable sliders can move toward each other in the forward and reverse lead screws, or the two movable sliders can move back to back on the forward and reverse lead screws.

[0031] Furthermore, the left top cone 11 and the right top cone 12 are correspondingly connected to the two movable sliders, so that when the clamping drive motor drives the forward and reverse screws to rotate, the forward and reverse screws can drive the left top cone 11 and the right top cone 12 to move toward each other, thereby achieving clamping and fixing of the membrane material workpiece; or the forward and reverse screws can drive the left top cone 11 and the right top cone 12 to move back to back, thereby achieving the loosening and release of the membrane material workpiece.

[0032] Specifically, the slitting assembly includes: a straight knife slitting mechanism and a circular knife slitting mechanism. The straight knife slitting mechanism is arranged above the circular knife slitting mechanism. According to actual processing requirements, the workpiece film material can be input into the straight knife slitting mechanism for strip cutting after passing through the diaphragm tensioning device 2, or the workpiece film material can be input into the circular knife slitting mechanism for strip cutting after passing through the diaphragm tensioning device 2. By arranging two slitting mechanisms in the slitting equipment, the versatility of the slitting equipment for film material slitting is provided.

[0033] Figure 2 A schematic diagram showing the structure of the diaphragm tensioning device 2 in an embodiment of the utility model is shown. Figure 3 The schematic diagram of the tensioning mechanism 22 structure in the embodiment of the utility model is shown. The membrane tensioning device 2 is arranged in the slitting device, and the membrane tensioning device 2 comprises: a first transmission roller 23, a tensioning mechanism 22, a second transmission roller 24 and a traction assembly 26, wherein a membrane conveying path is formed between the first transmission roller 23, the tensioning mechanism 22 and the traction assembly 26, and a GDL film material conveying path is formed between the second transmission roller 24 and the traction assembly 26.

[0034] Specifically, the diaphragm tensioning device 2 is further provided with a first guide roller 21 and a second guide roller 25. The first guide roller 21 is located on the diaphragm conveying path. The first guide roller 21 is used for feeding and conveying the workpiece film material of the diaphragm tensioning device 2. The second guide roller 25 is located at the film material output end of the diaphragm tensioning device 2. The second guide roller 25 is used for discharging and conveying the workpiece film material of the diaphragm tensioning device 2. After passing through the first guide roller 21, the workpiece film material is split into a diaphragm and a GDL film material. The diaphragm enters the tensioning mechanism 22 after passing through the first transmission roller 23. The first transmission film is used to adjust the angle at which the diaphragm enters the tensioning mechanism 22, so that the tensioning mechanism 22 can accurately adjust the tension of the diaphragm.

[0035] Furthermore, the first drive roller 23, the second drive roller 24 and the first guide roller 21 are arranged in a staggered manner, and the first drive roller 23, the second drive roller 24 and the first guide roller 21 are arranged in sequence from top to bottom. The first drive roller 23, the second drive roller 24 and the second guide roller 25 are arranged in a staggered manner so as to separate the diaphragm and the GDL film material. Through the vertical staggered arrangement, the space occupied by the diaphragm tensioning mechanism 22 can be reduced, so that the overall size of the diaphragm tensioning mechanism 22 is compact, thereby improving the rationality of the spatial layout of the slitting equipment.

[0036] Furthermore, after the tensioning mechanism 22 has completed tensioning the diaphragm, the diaphragm can be transported to the traction assembly 26 , and the traction assembly 26 can re-cover the tensioned diaphragm and attach it to the GDL film material.

[0037] Specifically, after the workpiece film material passes through the first guide roller 21, the separated GDL film material passes through the second transmission roller 24 and then enters the traction assembly 26, and the traction assembly 26 includes: a traction roller 261 and a rubber pressure roller 262, and a preset gap is set between the traction roller 261 and the rubber pressure roller 262, and the GDL film material and the tensioned diaphragm are transported between the traction roller 261 and the rubber pressure roller 262, and the diaphragm and the GDL film material are rolled and pressed by the traction roller 261 and the rubber pressure roller 262, so as to complete the lamination operation of the tensioned diaphragm on the GDL film material.

[0038] Furthermore, after the traction component 26 completes the lamination of the workpiece film material, the workpiece film material passes through the second guide roller 25 and is input into the slitting component. The second guide roller 25 is used to support and adjust the conveying angle of the workpiece film material so that the slitting component can cut the workpiece film material into strips.

[0039] Specifically, the tensioning mechanism 22 includes: a driving cylinder 221, a tensioning roller 224 and a seat bearing 223. The driving cylinder 221 is fixed on the inner wall of the slitting device, the seat bearing 223 is slidably connected to the inner wall of the slitting device, and the driving cylinder 221 drives and connects the seat bearing 223. Both ends of the tensioning roller 224 are connected to the seat bearing 223. The tensioning roller 224 is used to carry the diaphragm. When the driving cylinder 221 drives the seat bearing 223 to move up and down in the vertical direction, the tensioning roller 224 can move up and down in the vertical direction with the seat bearing 223. By driving the tensioning roller 224 to move in the vertical direction, the tensioning roller 224 can adjust the tensioning degree of the diaphragm, so that the diaphragm can be tightly attached to the GDL film material in the unfolded state, thereby avoiding the dislocation and wrinkling of the diaphragm when the workpiece film material is cut into strips.

[0040] Furthermore, the driving cylinder 221 is a low-friction cylinder, and a high-precision electrical proportional valve is provided at the output end of the driving cylinder 221. The low-friction cylinder controls its working state based on the high-precision electrical proportional valve, that is, the high-precision electrical proportional valve is used to provide a constant air pressure, so that the low-friction cylinder can maintain a stable state and the diaphragm can maintain a tensioned state.

[0041] Furthermore, the thrust of the driving cylinder 221 is adjusted by the high-precision electrical proportional valve, thereby achieving floating adjustment of the tensioning roller 224 in the vertical direction, thereby satisfying the tensioning force adjustment of the diaphragm.

[0042] Specifically, the tensioning mechanism 22 is also provided with a guide rail 222, and the guide rail 222 is fixed on the inner wall of the slitting device. The seat bearing 223 is slidably fitted on the guide rail 222 based on the slider. The guide rail 222 is used to limit the moving direction of the seat bearing 223, so that the seat bearing 223 can reciprocate along the guide rail 222 under the action of the driving cylinder 221.

[0043] Specifically, a pressure sensor can be provided on the tensioning roller 224, and the pressure sensor can be provided at the connection position between the tensioning roller 224 and the seat bearing 223. Based on the pressure sensor, the extrusion pressure of the diaphragm on the tensioning roller 224 can be detected in real time. A preset pressure value can be set according to actual equipment debugging. The preset pressure value is the pressure threshold for achieving diaphragm tensioning. The pressure sensor can be used to detect in real time whether the extrusion pressure of the diaphragm on the tensioning roller 224 reaches the preset pressure value. If the extrusion pressure is less than the preset pressure value, the thrust of the driving cylinder 221 can be increased by the high-precision electrical proportional valve, so that the tensioning roller 224 moves upward; when the extrusion pressure is greater than the preset pressure value, the thrust of the driving cylinder 221 can be reduced by the high-precision electrical proportional valve, so that the tensioning roller 224 can move downward, thereby achieving floating adjustment of the tensioning state of the diaphragm.

[0044] Specifically, the tensioning mechanism 22 also includes: a buffer 225, which is arranged below the belt seat bearing 223, and the working end of the buffer 225 is facing the bottom of the belt seat bearing 223. When the slitting equipment stops working, the driving cylinder 221 stops working, and the belt seat bearing 223 and the tensioning roller 224 will slide downward based on their own gravity and contact with the buffer 225. The buffer 225 is used to slow down the falling speed of the belt seat bearing 223 and the tensioning roller 224 to prevent the tensioning roller 224 and the belt seat bearing 223 from colliding with other components and making noise, and at the same time prevent the belt seat bearing 223 and the tensioning roller 224 from colliding with other components and being damaged, thereby improving the safety of the equipment.

[0045] The embodiment of the utility model provides a diaphragm tensioning device 2 and a stripping device. After the diaphragm and the GDL film material are separated, the diaphragm is tensioned by a tensioning roller 224 driven by a cylinder, and the tensioned diaphragm is re-coated on the GDL film material. This can avoid wrinkles and misalignment of the diaphragm during stripping, while reducing the tediousness of the stripping operation and improving the stripping processing efficiency.

[0046] In addition, the above is a detailed introduction to a diaphragm tensioning device and a stripping device provided in an embodiment of the utility model. Specific examples are used herein to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method of the utility model and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A diaphragm tensioning device, characterized in that: The diaphragm tensioning device is arranged in the slitting equipment, and the diaphragm tensioning device comprises: a first transmission roller, a tensioning mechanism, a second transmission roller and a traction assembly; A diaphragm conveying path is formed between the first transmission roller, the tensioning mechanism and the traction assembly, and a GDL film material conveying path is formed between the second transmission roller and the traction assembly; The tensioning mechanism comprises: a driving cylinder, a tensioning roller and a seat bearing arranged at either end of the tensioning roller; The driving cylinder is fixed on the inner wall of the stripping device, the seat bearing is slidably connected to the inner wall of the stripping device, and the driving cylinder is drivingly connected to the seat bearing.

2. The diaphragm tensioning device according to claim 1, characterized in that The output end of the driving cylinder is provided with a high-precision electrical proportional valve.

3. The diaphragm tensioning device according to claim 1, characterized in that: The tensioning mechanism is provided with a guide rail, the guide rail is fixed on the inner side wall of the slitting device, and the seat bearing is slidably fitted on the guide rail based on the slider.

4. The diaphragm tensioning device according to claim 1, characterized in that: The tensioning mechanism further comprises a buffer, which is arranged below the seat bearing, and a working end of the buffer faces the bottom of the seat bearing.

5. The diaphragm tensioning device according to claim 1, characterized in that: The traction assembly comprises: a traction roller and a rubber pressure roller, and a preset gap is arranged between the traction roller and the rubber pressure roller.

6. The diaphragm tensioning device according to claim 1, characterized in that: The tensioning roller is provided with a pressure sensor, and the pressure sensor is arranged at the connection position between the tensioning roller and the seat bearing.

7. The diaphragm tensioning device according to claim 1, characterized in that: The diaphragm tensioning device is also provided with a first guide roller and a second guide roller, wherein the first guide roller is located on the diaphragm conveying path; The second guide roller is arranged at the film material output end of the diaphragm tensioning device.

8. The diaphragm tensioning device according to claim 7, characterized in that The first transmission roller, the second transmission roller and the first guide roller are arranged in a staggered manner from top to bottom.

9. A striping device, characterized in that: The slitting equipment comprises: a film material unwinding assembly, a traction mechanism for driving the workpiece film material to travel, a slitting assembly and a diaphragm tensioning device as described in any one of claims 1 to 8.

10. The striping device according to claim 9, characterized in that: The film material unwinding assembly is provided with a left top cone, a right top cone and a lead screw transmission mechanism, and a film material installation station for accommodating a workpiece is formed between the left top cone and the right top cone; The lead screw transmission mechanism drives and connects the left top cone and the right top cone.

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