Novel non-contact wet-process oil stain cleaning device for diaphragm casting roller
Through the device combining contactless slit-type air knife and compressed air, the problem of oil stain removal of casting rollers in the production of wet diaphragm of lithium-ion batteries is solved, and the uniform cleaning and cooling effect of casting rollers is achieved, avoiding direct contact damage .
Patent Information
- Application Number
- CN202420194533.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-26
AI Technical Summary
Prior Art In the production process of lithium-ion battery wet diaphragm, paraffin oil on the casting sheet roller is difficult to effectively remove, affecting film formation uniformity and cooling effect, and direct contact cleaning methods can easily destroy the surface plating of the roller or fail to clean the fine particles.
Design a contactless wet diaphragm casting roller oil stain cleaning device, using a slit-type air knife combined with compressed air, through lifting and angle adjustment devices, a powerful air curtain is used to blow oil stain from the opposite direction of the casting roller, and The oil stain is removed through universal bamboo tubes to achieve contactless cleaning.
The contactless oil stain cleaning of the surface of the casting sheet roller is achieved, which avoids direct contact damage to the surface of the roller, and has a cooling effect, improving film formation uniformity and cooling efficiency.
Smart Images
Figure CN222245744U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery diaphragm production equipment, in particular to a novel non-contact wet-process diaphragm casting roll degreasing and cleaning device. Background Art
[0002] In recent years, with the development of lithium-ion battery diaphragm industry, people's demand for lithium-ion battery diaphragm output and diaphragm quality is also constantly improving. In the preparation process of wet diaphragm, after the melt is extruded from the die head and chilled by the casting roller, the PE raw material will separate from the paraffin oil, and some paraffin oil will precipitate and stick to the casting roller. If it is not treated, it will cause uneven cooling of the casting, affecting the uniformity of subsequent film formation. Generally, a scraper is used to remove the oil on the surface of the casting roller. The existing scraper is made of silicone material and directly contacts the casting roller. However, due to the increase in extrusion volume, too much oil is precipitated, the scraper has poor scraping effect, unstable operation, and direct contact is easy to damage the roller surface coating; another way to scrape oil is to use a pressure roller extrusion method. The pressure roller is made of butyl rubber. This method can remove most of the white oil precipitated on the casting roller, and a small part cannot be removed. Therefore, the casting roller needs to be wiped regularly, otherwise it will affect the thickness of the thick sheet and the cooling effect, and if fine particles appear, the pressure roller cannot be cleaned. Therefore, we propose a new contactless wet diaphragm casting roller degreasing and cleaning device. Utility Model Content
[0003] Aiming at the problems existing in the existing technical solutions, the utility model aims to provide a novel non-contact wet-process diaphragm casting roll oil cleaning device.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A novel non-contact wet diaphragm casting roller oil cleaning device comprises a die head, a casting roller and a cooling roller. The die head extrude a casting sheet, and the casting sheet is wound around the casting roller and the cooling roller front and back. A fixed shaft is installed on the upper back of the casting roller through a lifting device, and a slit air knife is fixed on the fixed shaft. An angle adjustment shaft is passed through the middle of the slit air knife. The slit air knife is externally connected to compressed air. When the slit air knife is turned on, compressed air blows out a wind curtain from the slit of the slit air knife toward the casting roller.
[0006] Furthermore, universal bamboo tubes are provided on both sides of the casting roller, and the universal bamboo tubes are fixed on both sides of the slit-type wind knife through a fixing frame, and the universal bamboo tubes are connected to external compressed air.
[0007] Furthermore, the lifting device controls the distance between the slit air knife and the casting roller to be between 10 mm and 50 mm.
[0008] Furthermore, the angle adjustment shaft adjusts the angle between the blade of the slit air knife and the contact surface of the casting roller to a range of 20° to 60°.
[0009] Furthermore, a pressure gauge is provided between the slit air knife and the external compressed air connecting pipe.
[0010] Compared with the prior art, the utility model has the following beneficial effects: the novel diaphragm casting roller oil cleaning device uses compressed air to blow out a powerful wind curtain from the wind knife slit to remove the oil attached to the casting roller in the opposite direction of the casting roller rotation, and uses the ventilated universal bamboo tube to remove the oil from the roller surface from the left side to the right side of the casting roller. This device can not only remove the oil on the roller surface without contact, but also achieve the effect of cooling the casting roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The utility model is further described below in conjunction with the accompanying drawings.
[0012] Figure 1 It is a side view structural schematic diagram of the utility model;
[0013] Figure 2 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 3 It is a schematic diagram of the slit-type air knife structure of the utility model.
[0015] Markings in the figure: 1. Die head; 2. Casting sheet; 3. Casting roller; 4. Fixed shaft; 5. Slit air knife; 6. Cooling roller; 7. Universal bamboo tube; 8. Angle adjustment shaft; 9. Pressure gauge; 10. Lifting device. DETAILED DESCRIPTION
[0016] 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 in 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.
[0017] Example 1
[0018] like Figure 1-3As shown, this embodiment provides a novel contactless wet diaphragm casting roller oil cleaning device, comprising a die head 1, a casting roller 3 and a cooling roller 6, wherein the die head 1 extrude a casting sheet 2, and the casting sheet 2 is wound around the casting roller 3 and the cooling roller 6 front and back, and a fixed shaft 4 is installed on the upper back of the casting roller 3 through a lifting device 10, and a slit air knife 5 is fixed on the fixed shaft 4, and an angle adjustment shaft 8 is passed through the middle of the slit air knife 5. The slit air knife 5 is externally connected to compressed air. After the slit air knife 5 is turned on, compressed air blows out a wind curtain from the slit of the slit air knife 5 toward the casting roller 3.
[0019] Specifically, universal bamboo tubes 7 are provided on both sides of the casting roller 3 , and the universal bamboo tubes 7 are fixed on both sides of the slit air knife 5 through a fixing frame, and the universal bamboo tubes 7 are connected to external compressed air.
[0020] Specifically, the lifting device 10 controls the distance between the slit air knife 5 and the casting roller 3 to be between 10 mm and 50 mm.
[0021] Specifically, the angle adjustment shaft 8 adjusts the angle between the blade of the slit air knife 5 and the contact surface of the casting roller 3 to a range of 20° to 60°.
[0022] When the specific work is done, continue to see Figure 1-Figure 3 When the casting sheet 2 comes down from the die head 1, it passes through the casting roller 3 and the cooling roller 6 continuously; after the melt is extruded from the die head 1 and quenched through the casting roller 3, the PE raw material will separate from the paraffin oil, and part of the paraffin oil will precipitate and stick to the casting roller 3. At this time, the distance between the slit air knife 5 and the casting roller 3 is controlled between 10mm and 50mm by adjusting the lifting device 10, and the distance is controlled and adjusted according to the difficulty of removing the oil stains; after the position is adjusted, the angle adjustment shaft 8 adjusts the blade of the slit air knife 5 to the casting roller The angle range of the contact surface section is adjusted to 20° to 60°; the angle is also controlled according to the difficulty of removing the oil stains; finally, the compressed air is adjusted to a suitable pressure through the barometer control, and is respectively introduced and delivered to the slit air knife 5 and the universal bamboo tube 7; after being delivered to the slit air knife 5, the compressed air blows out a strong wind curtain from the slit of the air knife, and the oil stains attached to the casting roller 3 are removed in the opposite direction of the rotation of the casting roller 3, and the ventilated universal bamboo tube 7 is used to remove the oil stains from the roller surface from the left side to the right side of the casting roller 3. The roller surface oil can be removed without contact, and the casting roller can also be cooled.
[0023] Example 2
[0024] This embodiment is basically the same as the embodiment 1, except that a barometer 9 is added to the embodiment 1. Specifically, the barometer 9 is arranged between the slit air knife 5 and the external compressed air connection pipe. The appropriate pressure is adjusted by the barometer 9 and delivered to the slit air knife 5, and the compressed air blows out a powerful wind curtain from the slit of the air knife.
[0025] The above contents are merely examples of the structure of the present utility model. The technicians in the relevant technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.
Claims
1. A novel non-contact wet diaphragm casting roller oil cleaning device, comprising a die head (1), a casting roller (3) and a cooling roller (6), wherein the die head (1) extrude a casting sheet (2), and the casting sheet (2) is wound around the casting roller (3) and the cooling roller (6) in front and back, characterized in that: A fixed shaft (4) is installed on the upper back side of the casting roller (3) via a lifting device (10); a slit-type air knife (5) is fixed on the fixed shaft (4); an angle adjustment shaft (8) is passed through the middle of the slit-type air knife (5); the slit-type air knife (5) is externally connected to compressed air; when the slit-type air knife (5) is turned on, compressed air is blown out from the slit of the slit-type air knife (5) to form an air curtain facing the casting roller (3).
2. According to claim 1, a novel non-contact wet diaphragm casting roller oil cleaning device is characterized in that: Universal bamboo tubes (7) are also provided on both sides of the casting roller (3); the universal bamboo tubes (7) are fixed to both sides of the slit-type wind knife (5) via a fixing frame; the universal bamboo tubes (7) are connected to external compressed air.
3. The novel non-contact wet diaphragm casting roller oil cleaning device according to claim 1 is characterized in that: The lifting device (10) controls the distance between the slit air knife (5) and the casting roller (3) to be between 10 mm and 50 mm.
4. The novel non-contact wet diaphragm casting roller oil cleaning device according to claim 1 is characterized in that: The angle adjustment shaft (8) adjusts the angle between the blade edge of the slit air knife (5) and the contact surface section of the casting roller (3) to a range of 20° to 60°.
5. The novel non-contact wet diaphragm casting roller oil cleaning device according to claim 1 is characterized in that: A pressure gauge (9) is also provided between the slit-type air knife (5) and the external compressed air connection pipe.