PE diaphragm cutting device for energy storage battery and using method of PE diaphragm cutting device

Abstract

The invention discloses a PE diaphragm cutting device for an energy storage battery and a use method of the PE diaphragm cutting device, and particularly relates to the technical field of energy storage battery manufacturing, in particular to the PE diaphragm cutting device for the energy storage battery and the use method of the PE diaphragm cutting device. An adsorption detection platform is arranged between the collecting support and the tension roller, adsorption micropores are formed in the top of the adsorption detection platform, and the adsorption detection platform can horizontally move towards the wind-up roller; a flow meter and automatic optical detection equipment are arranged in the adsorption detection platform, and the adsorption detection platform is used for detecting the deformation degree of the PE diaphragm at the adsorption micropores so as to distinguish the intact degree of the PE diaphragm; the PE diaphragm is adsorbed through the adsorption micropores in the adsorption detection platform, and the integrity of the PE diaphragm can be detected through the ventilation quantity of the PE diaphragm and the deformation quantity of the PE diaphragm, so that the detection is more convenient and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage battery manufacturing, and specifically relates to a PE diaphragm cutting device for energy storage batteries and its usage method. Background Art

[0002] The PE diaphragm for lithium batteries is one of the key inner components of lithium batteries and serves as a separator for the positive and negative active materials. During the production of the PE diaphragm for lithium batteries, it is generally stored in a wound manner. The lithium battery diaphragm of appropriate length and width is wound into a roll of PE diaphragm for lithium batteries through a cutting and winding device to facilitate the use of the PE diaphragm for lithium batteries. During the use of existing lithium battery diaphragm cutting and winding equipment, the lithium battery diaphragm is cut into the required width by a slitting device, and then the cut lithium battery diaphragm is wound around a winding roller by a rotating winding roller. The diaphragm is generally stored in a wound manner before final use and will be cut into small rolls of different widths for use after winding. Therefore, a relatively ideal detection timing is to detect the laid-open diaphragm before winding to determine whether there are damaged parts. Regarding whether there are damages, sampling inspection is generally used, but the accuracy and coverage ratio of sampling inspection are far less than those of full inspection. And after the inspection is carried out, for this reason, we propose a PE diaphragm cutting device and method for energy storage batteries to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a PE diaphragm cutting device and method for energy storage batteries to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A PE diaphragm cutting device for energy storage batteries and its usage method, including a collection bracket, on which a winding roller and a plurality of tension rollers are installed;

[0005] An adsorption detection platform is provided between the collection bracket and the tension roller. The top of the adsorption detection platform is provided with adsorption micropores, and the adsorption detection platform can move horizontally towards the winding roller;

[0006] A flowmeter and an automatic optical detection device are provided inside the adsorption detection platform for detecting the deformation degree of the PE diaphragm at the adsorption micropores to identify the integrity of the PE diaphragm;

[0007] A double-knife head cutting device is provided between the winding roller and the adsorption detection platform for cutting the damaged PE diaphragm;

[0008] A winding roller is provided directly above the pressing roller. The pressing roller can be in contact with the PE diaphragm wound on the winding roller, and the pressing roller can adsorb the end of the cut PE diaphragm. At the same time, the pressing roller has the function of moving vertically upward;

[0009] A downward pressing triangular plate that can move vertically relative to the adsorption detection platform is provided on the adsorption detection platform, and the cut PE diaphragm is conveyed between the winding roller and the downward pressing roller through the clamping of the adsorption detection platform and the downward pressing triangular plate.

[0010] Preferably, the tension rollers include a first folding angle roller, a second folding angle roller, and a third folding angle roller.

[0011] The first folding angle roller and the third folding angle roller are located at the same level as the top plane of the adsorption detection platform, and the second folding angle roller is located between the first folding angle roller and the third folding angle roller and is lower in height than the first folding angle roller and the third folding angle roller.

[0012] The first folding angle roller, the second folding angle roller, the third folding angle roller, the winding roller, and the downward pressing roller are all hollow, and negative pressure holes communicating with their interiors are provided on the first folding angle roller, the second folding angle roller, the third folding angle roller, the winding roller, and the downward pressing roller.

[0013] Preferably, a fan is installed on the collection bracket, a main pipe is installed at the air inlet of the fan, and the tail end of the main pipe is branched into multiple sub-pipes respectively communicating with the interiors of the first folding angle roller, the second folding angle roller, the third folding angle roller, the winding roller, and the downward pressing roller.

[0014] Preferably, a support cross beam and two connecting brackets are installed inside the collection bracket;

[0015] The inner ends of the two connecting brackets are fixedly installed with a first motor mounting bracket, and a first motor is installed inside the first motor mounting bracket.

[0016] Linear guide rods horizontally pointing to the winding roller are fixedly installed between the support cross beam and the two connecting brackets, and the adsorption detection platform is slidably connected to the linear guide rods;

[0017] A threaded lead screw is rotatably connected between the support cross beam and the first motor mounting bracket, the threaded lead screw is threadedly connected to the adsorption detection platform, and the output shaft of the first motor is connected to the end of the threaded lead screw.

[0018] Preferably, a fixing plate is fixedly installed between the collection brackets, a plurality of limiting slide rods are vertically slidably connected to the fixing plate, a first stop plate is fixedly installed at the bottom end of the limiting slide rod, and a lifting positioning platform is fixedly connected to the top end of the limiting slide rod;

[0019] A second electric push rod is installed at the top of the fixing plate, and the output end of the second electric push rod is connected to the bottom of the lifting positioning platform.

[0020] Preferably, a plurality of vertical limiting columns are fixedly installed at the bottom of the lifting and positioning platform. A lifting bracket is slidably connected to the limiting columns, and the pressing roller is installed on the lifting bracket.

[0021] A spring is sleeved on the limiting column. The top end of the spring is fixed to the bottom of the lifting and positioning platform, and the bottom end of the limiting column is fixed to the top of the lifting bracket.

[0022] Preferably, a second motor mounting bracket is fixedly installed on the collecting bracket. A chassis is installed inside the second motor mounting bracket. A second motor is installed outside the chassis. The output shaft of the second motor extends into the interior of the chassis and is connected to a driving gear.

[0023] The driving gear meshes with an outer eating ring seat. The outer eating ring seat is rotatably connected inside the chassis. The end of the winding roller extends into the interior of the chassis and is inserted into the inner side of the outer eating ring seat.

[0024] A connecting seat is installed on the collecting bracket. The connecting seat is connected to the end of the winding roller away from the outer eating ring seat. The top of the connecting seat is bolted with an upper cover that covers the end of the winding roller away from the outer eating ring seat.

[0025] Preferably, on the top of the adsorption detection platform near the winding roller side, there are slidably connected two or more vertically moving positioning rods. The top ends of the positioning rods extend out from the top of the adsorption detection platform and are fixed to the bottom of the pressing triangular plate.

[0026] At the corresponding position between the top of the adsorption detection platform near the winding roller side and the bottom of the pressing triangular plate, there is a protruding triangular part.

[0027] The bottom end of the positioning rod is fixedly connected with a second stop plate.

[0028] A first electric push rod is installed on the adsorption detection platform. The output end of the first electric push rod is connected to the bottom of the second stop plate.

[0029] Preferably, a docking sleeve is installed at the end of the auxiliary pipe. The first folding roller, the second folding roller, the third folding roller, the winding roller, and the pressing roller are respectively docked with the docking sleeve and rotatably connected. Air pressure valves are provided in the auxiliary pipes.

[0030] Preferably, it includes the following steps:

[0031] Step 1: The PE diaphragm passes through the top of the first folding roller, then passes through the bottom of the second folding roller, and finally passes through the top of the third folding roller. Then it is laid flat on the top of the adsorption detection platform and finally wound on the winding roller.

[0032] When the PE diaphragm passes through the first folding roller, the second folding roller, the third folding roller, and the winding roller, under the suction force of the negative pressure holes, the PE diaphragm can be adsorbed on its surface, providing resistance to the winding of the winding roller, so as to achieve the effect that the PE diaphragm can always be pulled, and under the guidance of the first folding roller, the second folding roller, and the third folding roller, dust can be sucked from both sides of the PE diaphragm, so as to achieve the effect of removing dust from the PE diaphragm;

[0033] Step 2: Under the action of the suction force of the fan, through the main pipe, the adsorption micropores on the top of the adsorption detection platform adsorb the PE diaphragm. By adsorbing the PE diaphragm and detecting the air flow through the flow meter, the damage of the PE diaphragm is detected, and the degree of deformation of the PE diaphragm caused by the suction force at the adsorption micropores is judged by the automatic optical detection equipment to determine the thickness of the PE diaphragm;

[0034] When the PE diaphragm is detected to be unqualified, first convey the PE diaphragm forward for a certain distance, and then cut off the unqualified part of the PE diaphragm through the double-blade cutting device;

[0035] Step 3: Driven by the first electric push rod, the second stop plate pulls the positioning rod downward to drive the downward pressing triangular plate to move downward. Whether the adsorption detection platform and the downward pressing triangular plate can clamp the PE diaphragm, and the winding roller continues to wind. After the tail end of the PE diaphragm becomes relatively short, driven by the second electric push rod, the lifting positioning platform moves upward, and through the limiting column, the lifting bracket moves upward to drive the downward pressing roller to move upward, and under the adsorption action of the downward pressing roller, the end of the PE diaphragm can be lifted;

[0036] Step 4: Driven by the output shaft of the first motor, the threaded lead screw can rotate. Under the action of the rotation of the threaded lead screw, the adsorption detection platform is driven to move towards the winding roller;

[0037] When the end of the PE diaphragm clamped by the adsorption detection platform and the downward pressing triangular plate moves between the PE diaphragm wound on the winding roller and the PE diaphragm pulled up by the downward pressing roller,

[0038] At this time, the downward pressing roller moves downward, and the downward pressing roller and the winding roller can clamp the end of the PE diaphragm sent by the adsorption detection platform and the downward pressing triangular plate. Then, when the winding roller continues to rotate, through the friction between the PE diaphragms, the PE diaphragm can be pulled to wind again.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] 1. The PE diaphragm cutting device for energy storage batteries adsorbs the PE diaphragm through the adsorption micropores on the adsorption detection platform, and can detect the integrity of the PE diaphragm by the ventilation volume and the deformation amount of the PE diaphragm, making its detection more convenient and efficient.

[0041] 2. The PE diaphragm cutting device for energy storage batteries, through the cooperation of the adsorption detection platform and the pressing roller, enables the cut PE diaphragm of the unqualified part to be wound again on the pressing roller after cutting, avoiding subsequent processing.

[0042] 3. The PE diaphragm cutting device for energy storage batteries, under the action of air suction by the first folding angle roller, the second folding angle roller, the third folding angle roller, and the winding roller, can give resistance to the winding of the winding roller, thereby realizing the effect that the PE diaphragm can always be pulled and straightened, and can vacuum both sides of the PE diaphragm to achieve the effect of removing dust from the PE diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0044] Figure 1 It is a schematic structural diagram of the present invention.

[0045] Figure 2 It is a schematic structural diagram of the present invention when viewed from below;

[0046] Figure 3 It is a schematic structural diagram of the main pipe connection of the present invention;

[0047] Figure 4 It is a schematic structural diagram of the connection of the second electric push rod of the present invention;

[0048] Figure 5 It is a schematic structural diagram of the connection of the pressing roller of the present invention;

[0049] Figure 6 It is a schematic structural diagram of the connection of the winding roller of the present invention;

[0050] Figure 7 It is a schematic sectional view of the connection of the winding roller of the present invention;

[0051] Figure 8 It is a schematic structural diagram of one end of the winding roller inserted into the outer eating ring seat of the present invention;

[0052] Figure 9 Schematic structural diagram of the connection of the adsorption detection platform in the present invention;

[0053] Figure 10 Schematic structural diagram of the connection of the first electric push rod in the present invention;

[0054] Figure 11 Schematic structural diagram of location A in the present invention;

[0055] Figure 12 Schematic structural diagram of location B in the present invention.

[0056] In the figure: 1. Collection bracket; 2. First folding roller; 3. Second folding roller; 4. Third folding roller; 5. Adsorption detection platform; 6. Pressing triangular plate; 7. Winding roller; 8. Pressing roller; 9. Lifting and positioning platform; 10. Lifting bracket; 11. First motor; 12. Connecting bracket; 13. First motor mounting bracket; 14. Driving gear; 15. Threaded lead screw; 16. Support cross beam; 17. Linear guide rod; 18. First electric push rod; 19. Second motor; 20. Limiting slide rod; 21. Fixed plate; 22. Second electric push rod; 23. First stop plate; 24. Fan; 25. Main pipe; 26. Second motor mounting bracket; 27. Chassis; 28. Limiting column; 29. Spring; 30. Upper cover; 31. Connecting seat; 32. Outer eating ring seat; 33. Docking sleeve; 34. Adsorption micropores; 35. Positioning rod; 36. Second stop plate. Detailed implementation manners

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0058] Please refer to Figures 1 to 5 and Figure 9 as well as Figure 10 , the present invention provides a PE diaphragm cutting device for energy storage batteries, including a collection bracket 1, on which a winding roller 7 is installed. By rotating the winding roller 7, the PE diaphragm can be wound, and a plurality of tension rollers are provided. Through the tension rollers, the tension of the PE diaphragm can be stretched to ensure the flatness of its winding;

[0059] An adsorption detection platform 5 is provided between the collection bracket 1 and the tension roller. An adsorption micropore 34 is provided at the top of the adsorption detection platform 5. The adsorption detection platform 5 can move horizontally towards the winding roller 7. The PE diaphragm can be adsorbed through the adsorption micropore 34 on the adsorption detection platform 5, and a certain winding resistance can be given to the winding roller 7, so that the PE diaphragm can be straightened, and thus the PE diaphragm can be wound relatively flatly;

[0060] A flow meter and an automatic optical detection device are provided inside the adsorption detection platform 5, which are used to detect the deformation degree of the PE diaphragm at the adsorption micropore 34 to identify the integrity of the PE diaphragm. That is, the PE diaphragm is adsorbed through 34. Under the action of wind, the PE diaphragm at the adsorption micropore 34 can be sucked. If the PE diaphragm is damaged, the air volume passing through it will change greatly. Through this change, the quality of the PE diaphragm can be identified, and the thickness of the PE diaphragm at this place can be identified through the deformation degree of the PE diaphragm sucked by the wind to determine whether it is qualified. Through the action of being sucked by the wind, its detection can be completed, so that its detection can be carried out while winding, making its production more efficient;

[0061] A double - blade cutting device (not shown in the figure) is provided between the winding roller 7 and the adsorption detection platform 5. It has a structure of two cutting heads and is used to cut the damaged PE diaphragm. After the detection is unqualified, the PE diaphragm is conveyed a set distance and then cut to remove the unqualified part;

[0062] A winding roller 7 is provided directly above the pressing roller 8. The pressing roller 8 can be in contact with the PE diaphragm wound on the winding roller 7, and the pressing roller 8 can adsorb the end of the cut PE diaphragm. At the same time, the pressing roller 8 has the function of moving vertically upward. Through the adsorption of the pressing roller 8, the end of the PE diaphragm cut on the winding roller 7 can be lifted, so that the subsequent PE diaphragm can extend between them, and their two - sided contact increases the friction force, so that the subsequent PE diaphragm can be wound smoothly;

[0063] A pressing triangular plate 6 that can move vertically relative to the adsorption detection platform 5 is provided on the adsorption detection platform 5. The cut PE diaphragm is conveyed between the winding roller 7 and the pressing roller 8 through the clamping of the adsorption detection platform 5 and the pressing triangular plate 6. Through the clamping between the adsorption detection platform 5 and the pressing triangular plate 6, and then through the movement of the adsorption detection platform 5, the PE diaphragm can be conveyed towards the winding roller 7, so that the PE diaphragm can be wound again.

[0064] Please refer to Figures 1 to 5 , the tension roller includes a first folding angle roller 2, a second folding angle roller 3, and a third folding angle roller 4,

[0065] The first angled roller 2 and the third angled roller 4 are located at the same level as the top plane of the adsorption detection platform 5. The second angled roller 3 is located between the first angled roller 2 and the third angled roller 4 and is lower in height than the first angled roller 2 and the third angled roller 4. Through this design, the bottom of the PE diaphragm can contact the first angled roller 2 and the third angled roller 4, and the top of the PE diaphragm can contact the second angled roller 3;

[0066] The first angled roller 2, the second angled roller 3, the third angled roller 4, the winding roller 7, and the pressing roller 8 are all hollow, and negative pressure holes communicating with their interiors are provided on the first angled roller 2, the second angled roller 3, the third angled roller 4, the winding roller 7, and the pressing roller 8. Through the action of the first angled roller 2, the second angled roller 3, and the third angled roller 4, the top and bottom of the passing PE diaphragm can suck away the dust thereon under the action of the negative pressure holes, thereby achieving a relatively comprehensive dust removal effect.

[0067] Please refer to Figures 1 to 5 , a blower 24 is installed on the collection bracket 1. The air inlet of the blower 24 is equipped with a main pipe 25. The tail end of the main pipe 25 is branched into multiple sub-pipes respectively communicating with the interiors of the first angled roller 2, the second angled roller 3, the third angled roller 4, the winding roller 7, and the pressing roller 8. Under the action of the main pipe 25, the first angled roller 2, the second angled roller 3, the third angled roller 4, the winding roller 7, and the pressing roller 8 can all generate negative pressure to suck the PE diaphragm.

[0068] Please refer to Figures 1 to 5 and Figure 9 , a support cross beam 16 and two connecting brackets 12 are installed inside the collection bracket 1;

[0069] The inner ends of the two connecting brackets 12 are fixedly installed with a first motor mounting bracket 13, and a first motor 11 is installed inside the first motor mounting bracket 13;

[0070] Linear guide rods 17 horizontally pointing to the winding roller 7 are fixedly installed between the support cross beam 16 and the two connecting brackets 12. The adsorption detection platform 5 is slidably connected to the linear guide rods 17. Under the limitation of the linear guide rods 17, the adsorption detection platform 5 can move along a fixed track, that is, the adsorption detection platform 5 can move horizontally towards the winding roller 7;

[0071] A threaded lead screw 15 is rotatably connected between the support cross beam 16 and the first motor mounting bracket 13. The threaded lead screw 15 can rotate relative to the first motor mounting bracket 13 and the first motor mounting bracket 13. The threaded lead screw 15 is threadedly connected to the adsorption detection platform 5. The output shaft of the first motor 11 is connected to the end of the threaded lead screw 15. Driven by the output shaft of the first motor 11, the threaded lead screw 15 can rotate, and by the rotation of the threaded lead screw 15, the movement of the adsorption detection platform 5 can be controlled.

[0072] Please refer to Figures 1 to 5 , a fixing plate 21 is fixedly installed between the collection brackets 1. A plurality of limiting slide rods 20 are vertically slidably connected to the fixing plate 21. A first stop plate 23 is fixedly installed at the bottom end of the limiting slide rod 20. The top end of the limiting slide rod 20 is fixedly connected to the lifting positioning platform 9. The movement track of the lifting positioning platform 9 can be limited by the limiting slide rod 20, so that the lifting positioning platform 9 can perform vertical lifting movement;

[0073] A second electric push rod 22 is installed at the top of the fixing plate 21. The output end of the second electric push rod 22 is connected to the bottom of the lifting positioning platform 9. Driven by the second electric push rod 22, the lifting positioning platform 9 can be lifted.

[0074] Please refer to Figures 1 to 5 and Figure 10 and Figure 11 , a plurality of vertical limiting columns 28 are fixedly installed at the bottom of the lifting positioning platform 9. A lifting bracket 10 is slidably connected to the limiting column 28. Under the limitation of the limiting column 28, the lifting bracket 10 can perform lifting along a fixed track. The pressing roller 8 is installed on the lifting bracket 10;

[0075] A spring 29 is sleeved on the limiting column 28. The top end of the spring 29 is fixed to the bottom of the lifting positioning platform 9. The bottom end of the limiting column 28 is fixed to the top of the lifting bracket 10. Under the action of the spring 29, the pressing roller 8 can adaptively contact the PE diaphragm on the winding roller 7, so that the winding is more neat.

[0076] Please refer to Figures 1 to 5 and Figures 10 to 12 , a second motor mounting bracket 26 is fixedly installed on the collection bracket 1. A chassis 27 is installed inside the second motor mounting bracket 26. A second motor 19 is installed outside the chassis 27. The output shaft of the second motor 19 extends into the interior of the chassis 27 and is connected to a driving gear 14. Driven by the output shaft of the second motor 19, the driving gear 14 can rotate;

[0077] The driving gear 14 meshes with the outer eating ring seat 32. Driven by the driving gear 14, the outer eating ring seat 32 can rotate. The outer eating ring seat 32 is rotatably connected inside the chassis 27. The end of the winding roller 7 extends into the inside of the chassis 27 and is inserted into the inner side of the outer eating ring seat 32. The insertion is a non-circular insertion, so that the rotation of the outer eating ring seat 32 can drive the winding roller 7 to rotate and wind.

[0078] A connecting seat 31 is installed on the collecting bracket 1. The connecting seat 31 is connected to the end of the winding roller 7 away from the outer eating ring seat 32. The top of the connecting seat 31 is bolted with an upper cover 30 that covers the end of the winding roller 7 away from the outer eating ring seat 32, so that the pressing roller 8 can be disassembled smoothly.

[0079] Please refer to Figures 1 to 5 and Figure 10 On the top of the adsorption detection platform 5 near the winding roller 7, there are slidably connected with two or more vertically moving positioning rods 35. The top ends of the positioning rods 35 extend out of the top of the adsorption detection platform 5 and are fixed to the bottom of the pressing triangular plate 6. Under the limitation of the positioning rods 35, the pressing triangular plate 6 can be lifted and lowered stably.

[0080] At the corresponding position of the top of the adsorption detection platform 5 near the winding roller 7 and the bottom of the pressing triangular plate 6, there is a protruding triangular part, so that the PE diaphragm can be conveyed smoothly.

[0081] The bottom end of the positioning rod 35 is fixedly connected with a second stop plate 36. Driven by the second stop plate 36, the positioning rod 35 can move smoothly.

[0082] A first electric push rod 18 is installed on the adsorption detection platform 5. The output end of the first electric push rod 18 is connected to the bottom of the second stop plate 36. Driven by the first electric push rod 18, the second stop plate 36 can move smoothly.

[0083] Please refer to Figures 1 to 8 and Figure 12 The end of the auxiliary pipe is installed with a docking sleeve 33. The first folding roller 2, the second folding roller 3, the third folding roller 4, the winding roller 7, and the pressing roller 8 are respectively docked with the docking sleeve 33 and rotatably connected, so that the first folding roller 2, the second folding roller 3, the third folding roller 4, the winding roller 7, and the pressing roller 8 can all rotate. Air pressure valves are provided in the auxiliary pipes to control the air pressure inside them, making their use more convenient.

[0084] Please refer to Figures 1 to 12 , including the following steps:

[0085] Step 1: The PE diaphragm passes through the top of the first folding roller 2, then passes through the bottom of the second folding roller 3, and finally passes through the top of the third folding roller 4, and then is laid flat on the top of the adsorption detection platform 5, and finally wound on the winding roller 7;

[0086] When the PE diaphragm passes through the first folding roller 2, the second folding roller 3, the third folding roller 4, and the winding roller 7, under the suction of the negative pressure holes, the PE diaphragm can be adsorbed on its surface, giving resistance to the winding of the winding roller 7, so as to achieve the effect that the PE diaphragm can always be pulled, and under the guidance of the first folding roller 2, the second folding roller 3, and the third folding roller 4, the two sides of the PE diaphragm can be dusted, so as to achieve the effect of removing dust from the PE diaphragm;

[0087] Step 2: Under the suction of the fan 24, through the main pipe 25, the adsorption micropores 34 on the top of the adsorption detection platform 5 adsorb the PE diaphragm. By adsorbing the PE diaphragm and detecting the air flow through the flow meter, the damage of the PE diaphragm is detected, and the degree of deformation of the PE diaphragm caused by the suction force at the adsorption micropores 34 is judged by the automatic optical detection equipment to determine the thickness of the PE diaphragm;

[0088] When the PE diaphragm is detected to be unqualified, first convey the PE diaphragm forward by a certain distance, and then cut off the unqualified part of the PE diaphragm by the double-blade cutting device;

[0089] Step 3: Driven by the first electric push rod 18, the second stop plate 36 pulls the positioning rod 35 down to drive the pressing triangular plate 6 to move down. Whether the adsorption detection platform 5 and the pressing triangular plate 6 can clamp the PE diaphragm, the winding roller 7 continues to wind. After the tail end of the PE diaphragm becomes relatively short, driven by the second electric push rod 22, the lifting positioning platform 9 moves up, and through the limiting column 28, the lifting bracket 10 moves up to drive the pressing roller 8 to move up, and under the adsorption of the pressing roller 8, the end of the PE diaphragm can be lifted;

[0090] Step 4: Driven by the output shaft of the first motor 11, the threaded lead screw 15 can rotate. Under the rotation of the threaded lead screw 15, the adsorption detection platform 5 is driven to move towards the winding roller 7;

[0091] When the end of the PE diaphragm clamped by the adsorption detection platform 5 and the pressing triangular plate 6 moves between the PE diaphragm wound on the winding roller 7 and the PE diaphragm pulled up by the pressing roller 8,

[0092] At this time, the pressing roller 8 moves down, and the pressing roller 8 and the winding roller 7 can clamp the end of the PE diaphragm sent by the adsorption detection platform 5 and the pressing triangular plate 6. Then, when the winding roller 7 continues to rotate, through the friction between the PE diaphragms, the PE diaphragm can be pulled to wind again.

[0093] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PE diaphragm cutting device for energy storage batteries, comprising a collecting bracket (1), characterized in that: The collecting bracket (1) is provided with a winding roller (7) and a plurality of tension rollers; An adsorption detection platform (5) is provided between the collecting bracket (1) and the tension roller, and adsorption micropores (34) are provided on the top of the adsorption detection platform (5). The adsorption detection platform (5) can be moved horizontally toward the winding roller (7); The adsorption detection platform (5) is provided with a flow meter and an automatic optical detection device inside, which are used to detect the deformation degree of the PE diaphragm at the adsorption micropores (34) to identify the integrity of the PE diaphragm; The winding roller (7) is provided with a double-blade cutting device between the adsorption detection platform (5) for cutting the damaged PE diaphragm; A winding roller (7) is provided directly above the lower pressure roller (8), and the lower pressure roller (8) can contact the PE diaphragm wound on the winding roller (7), and the lower pressure roller (8) can adsorb the end of the cut PE diaphragm, and the lower pressure roller (8) has a vertical upward movement function; The adsorption detection platform (5) is provided with a downward pressing triangle plate (6) which can move vertically relative to the adsorption detection platform (5), and the cut PE diaphragm is transported between the winding roller (7) and the downward pressing roller (8) through the clamping of the adsorption detection platform (5) and the downward pressing triangle plate (6).

2. The PE diaphragm cutting device for energy storage battery according to claim 1, characterized in that: The tension roller comprises a first folding roller (2), a second folding roller (3), and a third folding roller (4). The first folding roller (2) and the third folding roller (4) are located at a position where the top plane of the adsorption detection platform (5) is flush with each other, and the second folding roller (3) is located between the first folding roller (2) and the third folding roller (4) and is lower in height than the first folding roller (2) and the third folding roller (4); The first folding roller (2), the second folding roller (3), the third folding roller (4), the winding roller (7), and the lower pressure roller (8) are all hollow, and the first folding roller (2), the second folding roller (3), the third folding roller (4), the winding roller (7), and the lower pressure roller (8) are all provided with negative pressure holes connected to their interiors.

3. The PE diaphragm cutting device for energy storage battery according to claim 2, characterized in that: A fan (24) is installed on the collecting bracket (1), and a main pipe (25) is installed at the air inlet of the fan (24). The tail end of the main pipe (25) is provided with a plurality of auxiliary pipes which are respectively connected to the inside of the first folding roller (2), the second folding roller (3), the third folding roller (4), the winding roller (7), and the lower pressure roller (8).

4. The PE diaphragm cutting device for energy storage battery according to claim 2, characterized in that: A supporting crossbeam (16) and two connecting brackets (12) are installed on the inner side of the collecting bracket (1); A first motor mounting frame (13) is fixedly mounted on the inner ends of the two connecting brackets (12), and a first motor (11) is mounted inside the first motor mounting frame (13); A linear guide rod (17) pointing horizontally toward the winding roller (7) is fixedly installed between the supporting crossbeam (16) and the two connecting brackets (12), and the adsorption detection platform (5) is slidably connected to the linear guide rod (17); A threaded screw (15) is rotatably connected between the support beam (16) and the first motor mounting frame (13); the threaded screw (15) is threadably connected to the adsorption detection platform (5); and the output shaft of the first motor (11) is connected to the end of the threaded screw (15).

5. The PE diaphragm cutting device for energy storage battery according to claim 2, characterized in that: A fixing plate (21) is fixedly installed between the collecting brackets (1), a plurality of limiting slide bars (20) are vertically slidably connected to the fixing plate (21), a first stop plate (23) is fixedly installed at the bottom end of the limiting slide bar (20), and a lifting and positioning platform (9) is fixedly connected to the top end of the limiting slide bar (20); A second electric push rod (22) is installed on the top of the fixing plate (21), and an output end of the second electric push rod (22) is connected to the bottom of the lifting and positioning platform (9).

6. The PE diaphragm cutting device for energy storage battery according to claim 5, characterized in that: A plurality of vertical limiting columns (28) are fixedly installed at the bottom of the lifting and positioning platform (9), a lifting bracket (10) is slidably connected to the limiting columns (28), and the lower pressure roller (8) is installed on the lifting bracket (10); A spring (29) is sleeved on the limiting column (28), the top end of the spring (29) is fixed to the bottom of the lifting and positioning platform (9), and the bottom end of the limiting column (28) is fixed to the top of the lifting bracket (10).

7. The PE diaphragm cutting device for energy storage battery according to claim 2, characterized in that: A second motor mounting frame (26) is fixedly mounted on the collecting bracket (1), a chassis (27) is mounted on the inner side of the second motor mounting frame (26), a second motor (19) is mounted on the outer side of the chassis (27), and an output shaft of the second motor (19) extends into the interior of the chassis (27) and is connected to a driving gear (14); The driving gear (14) is meshed with an outer ring seat (32), and the outer ring seat (32) is rotatably connected to the inside of the chassis (27). The end of the winding roller (7) extends into the inside of the chassis (27) and is plugged into the inner side of the outer ring seat (32). A connecting seat (31) is installed on the collecting bracket (1), and the connecting seat (31) is connected to the end of the winding roller (7) away from the outer ring-eating seat (32). The top of the connecting seat (31) is connected to an upper cover (30) that covers the end of the winding roller (7) away from the outer ring-eating seat (32) through bolts.

8. The PE diaphragm cutting device for energy storage battery according to claim 2, characterized in that: The top of the adsorption detection platform (5) close to the winding roller (7) is slidably connected to two or more vertically movable positioning rods (35), and the top of the positioning rod (35) extends from the top of the adsorption detection platform (5) and is fixed to the bottom of the downward pressing triangle plate (6); The top of the adsorption detection platform (5) close to the winding roller (7) and the position corresponding to the bottom of the downward pressing triangle plate (6) are provided with a protruding triangular convex portion; The bottom end of the positioning rod (35) is fixedly connected to a second stop plate (36); A first electric push rod (18) is installed on the adsorption detection platform (5), and an output end of the first electric push rod (18) is connected to the bottom of a second stop plate (36).

9. The PE diaphragm cutting device for energy storage battery according to claim 3, characterized in that: A docking sleeve (33) is installed at the end of the auxiliary pipe, and the first folding roller (2), the second folding roller (3), the third folding roller (4), the winding roller (7), and the lower pressure roller (8) are respectively docked with the docking sleeve (33) and rotatably connected, and an air pressure valve is provided in each of the auxiliary pipes.

10. A method for using the PE diaphragm cutting device for energy storage batteries according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: The PE membrane passes through the top of the first folding roller (2), then passes through the bottom of the second folding roller (3), and finally passes through the top of the third folding roller (4), and then is laid flat on the top of the adsorption detection platform (5), and finally rolled up on the winding roller (7); When the PE diaphragm passes through the first folding roller (2), the second folding roller (3), the third folding roller (4), and the winding roller (7), the PE diaphragm can be adsorbed on its surface under the suction of the negative pressure hole, giving the winding roller (7) a resistance to winding, thereby achieving the effect that the PE diaphragm can always be pulled, and under the guidance of the first folding roller (2), the second folding roller (3), and the third folding roller (4), dust can be sucked from both sides of the PE diaphragm, thereby achieving the effect of dust removal of the PE diaphragm; Step 2: Under the action of the suction force of the fan (24), the PE membrane is adsorbed through the adsorption micropores (34) on the top of the adsorption detection platform (5) through the main pipe (25). The damage of the PE membrane is detected by the adsorption of the PE membrane and the detection of the air flow by the flow meter. The thickness of the PE membrane is determined by the degree of deformation of the PE membrane caused by the suction force at the adsorption micropores (34) through the automatic optical detection equipment. When the PE diaphragm fails the test, the PE diaphragm is first transported forward a certain distance, and then the unqualified part of the PE diaphragm is cut off by a double-blade cutting device; Step 3: driven by the first electric push rod (18), the second stop plate (36) pulls the positioning rod (35) downward to drive the downward pressing triangle plate (6) to move downward, and the adsorption detection platform (5) and the downward pressing triangle plate (6) are used to clamp the PE diaphragm, and the winding roller (7) continues to wind up. After the tail end of the PE diaphragm becomes relatively short, driven by the second electric push rod (22), the lifting and positioning platform (9) moves upward, and through the limiting column (28), the lifting bracket (10) moves upward to drive the downward pressing roller (8) to move upward, and under the adsorption effect of the downward pressing roller (8), the end of the PE diaphragm can be tilted; Step 4: Driven by the output shaft of the first motor (11), the threaded screw (15) is allowed to rotate, and the adsorption detection platform (5) is driven to move toward the winding roller (7) under the action of the rotation of the threaded screw (15); When the end of the PE diaphragm clamped by the adsorption detection platform (5) and the downward pressing triangle plate (6) moves to between the PE diaphragm rolled up on the winding roller (7) and the PE diaphragm lifted up by the downward pressing roller (8), At this time, the lower pressure roller (8) moves downward, and the lower pressure roller (8) and the winding roller (7) can clamp the end of the PE diaphragm sent by the adsorption detection platform (5) and the lower pressure triangle plate (6), and then, the winding roller (7) continues to rotate, and the friction between the PE diaphragms can pull the PE diaphragm again for winding.

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