Dry-method double-drawing preparation device for composite diaphragm

Abstract

The utility model provides a dry-method double-drawing preparation device for a composite diaphragm, which relates to the technical field of lithium batteries and comprises a mounting plate, a die head is arranged on the surface of the mounting plate, a casting roller is rotatably connected to the surface of the mounting plate, a shell is fixedly mounted on the surface of the mounting plate, and an air blower is fixedly mounted on the inner wall of the shell. And an extraction opening is formed in the side, close to the casting piece roller, of the shell, a top base is fixedly installed on the top face of the shell, a rotating rod is rotationally connected to the inner side of the top base, and a round block is fixedly installed at one end of the rotating rod. According to the utility model, the sheet is stabilized by using the guide roller and the torsional spring mechanism, so that the shaking and deformation of the sheet caused by air exhaust of the air exhaust port can be effectively reduced, the product quality is improved, the rejection rate in the production process is reduced, and the operation speed and efficiency of a production line can be improved by optimizing the guide and stability of the sheet, thereby reducing the production cost. Therefore, the yield is increased and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a composite diaphragm dry-process double-drawing preparation device. Background Art

[0002] New battery diaphragm materials are the main force in developing energy technology and improving energy production and utilization efficiency. They have now become a new hotspot in global economic development. Among them, the casting system is the first process for forming diaphragm sheets, which plays a key role in the thickness and overall performance of the diaphragm. The casting is to cast the melt output by the extruder through the die head to form a sheet and attach it to the rotating casting roller. The sheet is formed into a thick sheet under the rapid cooling effect of the casting roller for stretching in the next process.

[0003] Publication No. CN216300085U discloses a vacuum adsorption device for a dry-process double-pulled lithium battery diaphragm extrusion die, including a die and an adsorption device body, a casting roller is provided below the die, the adsorption device body is arranged on the side of the casting roller, an inner cavity and an outer cavity are provided in the adsorption device body, and a blower is provided in the inner cavity and the outer cavity. The adsorption device body is provided with a working surface for matching the surface gap of the casting roller, and an exhaust port connected to the inner cavity is provided on the working surface. Although this type of vacuum adsorption device improves the effect of speeding up production. However, in this type of vacuum adsorption device, the sheet is prone to shaking and deformation during the process of exhausting air through the exhaust port. This instability leads to two main problems: first, the shaking and deformation of the sheet will reduce the quality of the diaphragm and affect the performance and reliability of the final product. Second, this instability will increase the scrap rate in the production process, thereby reducing production efficiency and output. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a composite diaphragm dry double-drawing preparation device, comprising a mounting plate, a die head is arranged on the surface of the mounting plate, a casting roller is rotatably connected to the surface of the mounting plate, a shell is fixedly mounted on the surface of the mounting plate, a blower is fixedly mounted on the inner wall of the shell, an air suction port is opened on the side of the shell close to the casting roller, a top seat is fixedly mounted on the top surface of the shell, a rotating rod is rotatably connected to the inner side of the top seat, a round block is fixedly mounted on one end of the rotating rod, a torsion spring is sleeved on the surface of the rotating rod, a mounting frame is fixedly mounted on the surface of the rotating rod, and a guide roller is mounted on the inner side of the mounting frame.

[0006] Preferably, one end of the torsion spring is fixedly connected to the round block, and the other end of the torsion spring is fixedly connected to the top seat. Here, the torsion spring can be stably installed.

[0007] Preferably, the number of the top seats is two groups, and the two groups of the top seats are symmetrically distributed on the top surface and the bottom surface of the shell.

[0008] Preferably, the mounting frame is a "U"-shaped structure, and the mounting frame is made of austenitic stainless steel, thereby increasing the service life of the mounting frame.

[0009] Preferably, a fixing mechanism is provided on the inner side of the mounting frame, and the fixing mechanism includes a rotating disk, and the rotating disk is rotatably connected to the inner side of the mounting frame, and a slot is provided on the surface of the rotating disk, and an insert block is inserted into the inner wall of the slot, and the insert block is fixedly connected to the guide roller, and a limit block is inserted into the inner wall of the slot, and screw holes are provided on the surfaces of the limit block and the rotating disk, and bolts are inserted into the inner wall of the screw hole. Here, the guide roller can be easily maintained.

[0010] Preferably, the screw hole is matched with the size of the bolt.

[0011] Preferably, the widths of the limiting block and the inserting block are the same as the width of the slot.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the present invention, in actual use, the polypropylene raw material is extruded through the die head and then cast into a sheet on the casting roller. In this process, the sheet needs to be closely attached to the casting roller so as to form a uniform film. Then, the blower is used to evacuate air through the exhaust port to extract volatile foreign matter. At the same time, when the casting roller rotates, the guide roller can be against the casting roller and roll on the casting roller. At the same time, due to the torsion of the torsion spring, the torsion spring can drive the round block to rotate, and the round block then drives the rotating rod to rotate, and the rotating rod then drives the mounting frame to rotate. The mounting frame then drives the guide roller to rotate. At this time, the guide roller can only be against the casting roller, so that the sheet can be pressed, thereby preventing the sheet from shaking and deforming due to the suction of the air outlet. The utility model stabilizes the sheet by using guide rollers and torsion spring mechanisms, which can effectively reduce the shaking and deformation of the sheet caused by the suction of the air outlet, which not only improves the product quality, but also reduces the scrap rate in the production process, and by optimizing the guidance and stability of the sheet, the operating speed and efficiency of the production line can be improved, thereby increasing production, and the utility model has high practicality.

[0014] 2. In the utility model, during actual use, when the guide roller is damaged or severely worn and needs maintenance and replacement, the staff only needs to unscrew the bolt outwards, then the limit block releases the limit, and then the limit block is pulled outwards, the limit block now slides outwards in the slot until the limit block slides out, and then the guide roller can be pulled outwards, the guide roller then drives the plug block to slide in the slot until the plug block slides out of the slot, and the guide roller can be removed, and when a new guide roller needs to be installed, it is only necessary to align the plug block on the guide roller with the slot and insert it, and then insert the limit block into the slot, and then align the bolt with the screw hole and screw it in, and the guide roller can be fixed in position. Through this design of the utility model, the staff can quickly and conveniently replace the guide roller without complicated disassembly steps or special tools, which greatly simplifies the maintenance and replacement process, and because the process of replacing the guide roller becomes faster and simpler, the downtime of the equipment is greatly reduced, thereby improving production efficiency and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a composite diaphragm dry double-drawing preparation device is provided for the utility model;

[0016] Figure 2 A top view of a composite diaphragm dry double-drawing preparation device is provided for the utility model;

[0017] Figure 3 The utility model proposes a composite diaphragm dry double-drawing preparation device Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 The utility model proposes a composite diaphragm dry double-drawing preparation device Figure 2 Enlarged view of point B in the middle;

[0019] Figure 5 The utility model provides a side view of a composite diaphragm dry double-drawing preparation device.

[0020] Legend:

[0021] 1. Mounting plate; 2. Die head; 3. Casting roller; 4. Casing; 5. Blower; 6. Exhaust port; 7. Top seat; 8. Turntable; 9. Round block; 10. Torsion spring; 11. Mounting frame; 12. Guide roller; 13. Turntable; 14. Slot; 15. Insert block; 16. Limit block; 17. Screw hole; 18. Bolt. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1

[0025] See also Figure 1-5 The utility model provides a technical solution: a composite diaphragm dry double-drawing preparation device, comprising a mounting plate 1, a die head 2 is arranged on the surface of the mounting plate 1, a casting roller 3 is rotatably connected to the surface of the mounting plate 1, a shell 4 is fixedly mounted on the surface of the mounting plate 1, a blower 5 is fixedly mounted on the inner wall of the shell 4, an exhaust port 6 is opened on the side of the shell 4 close to the casting roller 3, the polypropylene raw material is extruded through the die head 2, and then cast into a sheet on the casting roller 3, in this process, the sheet needs to be tightly fitted on the casting roller 3 to form a uniform film, and then the blower 5 is used to exhaust air through the exhaust port 6 to extract volatile foreign matter, a top seat 7 is fixedly mounted on the top surface of the shell 4, the number of the top seats 7 is two groups, and the two groups of top seats 7 are symmetrically distributed on the top and bottom surfaces of the shell 4, the inner side of the top seat 7 is rotatably connected to a rotating rod 8, and a round block 9 is fixedly mounted on one end of the rotating rod 8.

[0026] See also Figure 1-5 A torsion spring 10 is sleeved on the surface of the rotating rod 8, one end of the torsion spring 10 is fixedly connected to the round block 9, and the other end of the torsion spring 10 is fixedly connected to the top seat 7. A mounting frame 11 is fixedly installed on the surface of the rotating rod 8. The mounting frame 11 is a "U"-shaped structure. The material of the mounting frame 11 is austenitic stainless steel. The mounting frame 11 made of austenitic stainless steel is sturdy and durable. A guide roller 12 is installed on the inner side of the mounting frame 11. When the casting roller 3 rotates, the set guide roller 12 can resist the casting roller 3 and roll on the casting roller 3. At the same time, due to the torsion force of the torsion spring 10, the torsion spring 10 can drive the round block 9 to rotate, and the round block 9 then drives the rotating rod 8 to rotate, and the rotating rod 8 then drives the mounting frame 11 to rotate, and the mounting frame 11 then drives the guide roller 12 to rotate. At this time, the guide roller 12 can only resist the casting roller 3, so that the sheet can be pressed, thereby preventing the sheet from shaking and deforming due to the suction of the suction port 6.

[0027] Embodiment 2

[0028] See also Figure 2 and Figure 4A fixing mechanism is arranged on the inner side of the mounting frame 11, and the fixing mechanism includes a turntable 13, and the turntable 13 is rotatably connected to the inner side of the mounting frame 11. A slot 14 is provided on the surface of the turntable 13, and an insert block 15 is inserted into the inner wall of the slot 14. The insert block 15 is fixedly connected to the guide roller 12, and a limit block 16 is inserted into the inner wall of the slot 14. The width of the limit block 16 and the insert block 15 is the same as the width of the slot 14. Screw holes 17 are provided on the surfaces of the limit block 16 and the turntable 13, and bolts 18 are inserted into the inner wall of the screw hole 17. When the guide roller 12 is damaged or worn seriously and needs maintenance and replacement, the staff only needs to screw out the bolt 18. At this time, The limit block 16 is released from the limit, and then the limit block 16 is pulled outward. The limit block 16 now slides outward in the slot 14 until the limit block 16 slides out, and then the guide roller 12 can be pulled outward, and the guide roller 12 then drives the plug block 15 to slide in the slot 14 until the plug block 15 slides out of the slot 14, and then the guide roller 12 can be removed, and when a new guide roller 12 needs to be installed, it is only necessary to align the plug block 15 on the guide roller 12 with the slot 14 and insert it, and then insert the limit block 16 into the slot 14, and then align the bolt 18 with the screw hole 17 and screw it in, and now the guide roller 12 can be limited and fixed, and the size of the screw hole 17 is adapted to the size of the bolt 18.

[0029] Working principle: The polypropylene raw material is extruded through the die head 2 and then cast into a sheet on the casting roller 3. In this process, the sheet needs to fit tightly on the casting roller 3 in order to form a uniform film. Then, the blower 5 is used to evacuate air through the exhaust port 6 to extract volatile foreign matter. At the same time, when the casting roller 3 rotates, the guide roller 12 provided can abut against the casting roller 3 and roll on the casting roller 3. At the same time, due to the torsion force of the torsion spring 10, the torsion spring 10 can drive the round block 9 to rotate, and the round block 9 then drives the rotating rod 8 to rotate, and the rotating rod 8 then drives the mounting frame 11 to rotate, and the mounting frame 11 then drives the guide roller 12 to rotate. At this time, the guide roller 12 can only abut against the casting roller 3, so that the sheet can be pressed, thereby preventing the sheet from shaking and deforming due to the exhaust of the exhaust port 6. The utility model uses the guide roller 12 and the torsion spring 10 mechanism To stabilize the sheet, it can effectively reduce the sheet shaking and deformation caused by the exhaust port 6. When the guide roller 12 is damaged or worn severely and needs maintenance and replacement, the staff only needs to unscrew the bolt 18 outward. At this time, the limit block 16 releases the limit, and then pulls the limit block 16 outward. The limit block 16 slides outward in the slot 14 until the limit block 16 slides out, and then the guide roller 12 can be pulled outward. The guide roller 12 then drives the plug block 15 to slide in the slot 14 until the plug block 15 slides out of the slot 14. At this time, the guide roller 12 can be removed. When a new guide roller 12 needs to be installed, it is only necessary to align the plug block 15 on the guide roller 12 with the slot 14 and insert it, and then insert the limit block 16 into the slot 14, and then align the bolt 18 with the screw hole 17 and screw it in. At this time, the guide roller 12 can be limited and fixed.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A composite diaphragm dry double-drawing preparation device, comprising a mounting plate (1), characterized in that: The surface of the mounting plate (1) is provided with a die head (2), the surface of the mounting plate (1) is rotatably connected to a casting roller (3), the surface of the mounting plate (1) is fixedly mounted with a shell (4), the inner wall of the shell (4) is fixedly mounted with a blower (5), a side of the shell (4) close to the casting roller (3) is provided with an air suction port (6), the top surface of the shell (4) is fixedly mounted with a top seat (7), the inner side of the top seat (7) is rotatably connected to a rotating rod (8), one end of the rotating rod (8) is fixedly mounted with a round block (9), the surface of the rotating rod (8) is sleeved with a torsion spring (10), the surface of the rotating rod (8) is fixedly mounted with a mounting frame (11), and the inner side of the mounting frame (11) is mounted with a guide roller (12).

2. The composite diaphragm dry double-drawing preparation device according to claim 1, characterized in that: One end of the torsion spring (10) is fixedly connected to the round block (9), and the other end of the torsion spring (10) is fixedly connected to the top seat (7).

3. The composite diaphragm dry double-drawing preparation device according to claim 1, characterized in that: The number of the top seats (7) is two groups, and the two groups of the top seats (7) are symmetrically distributed on the top surface and the bottom surface of the outer shell (4).

4. The composite diaphragm dry double-drawing preparation device according to claim 1, characterized in that: The mounting frame (11) is a "U"-shaped structure, and the mounting frame (11) is made of austenitic stainless steel.

5. The composite diaphragm dry double-drawing preparation device according to claim 1, characterized in that: A fixing mechanism is arranged on the inner side of the mounting frame (11), and the fixing mechanism comprises a rotating disk (13), the rotating disk (13) is rotatably connected to the inner side of the mounting frame (11), a slot (14) is provided on the surface of the rotating disk (13), an insert block (15) is inserted into the inner wall of the slot (14), the insert block (15) is fixedly connected to the guide roller (12), a limit block (16) is inserted into the inner wall of the slot (14), screw holes (17) are provided on the surfaces of the limit block (16) and the rotating disk (13), and bolts (18) are inserted into the inner wall of the screw hole (17).

6. The composite diaphragm dry double-drawing preparation device according to claim 5, characterized in that: The screw hole (17) is adapted to the size of the bolt (18).

7. The composite diaphragm dry double-drawing preparation device according to claim 5, characterized in that: The widths of the limiting block (16) and the inserting block (15) are the same as the width of the slot (14).

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