Stop device of scraper type coating machine

Abstract

The utility model relates to a material blocking device of a scraper type coating machine, which is arranged on one side of a coating roller and comprises a side baffle plate, a material blocking plate, a material blocking plate and a material blocking plate, the sealing assembly is arranged in the mounting groove of the side baffle; the sealing assembly comprises a sealing rubber strip and an air bag, the sealing rubber strip is arranged in the mounting groove, and the air bag is arranged in the sealing rubber strip and communicates with an external air source through an air pipe. According to the utility model, the side baffle is arranged, and the sealing rubber strip and the air bag are arranged on the contact surface of the side baffle and the coating roller, so that the coating roller and the side baffle can be completely attached, material leakage is not easy to occur in the coating process, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of coating machine technology, and in particular to a material blocking device for a scraper coating machine. Background Technology

[0002] Battery electrodes are a crucial component of lithium-ion batteries. Electrode coating is a key step in electrode production, aiming to coat a substrate with a slurry of suitable viscosity. Electrode coating is completed on a coating machine. A doctor blade coating machine uses rotating coating rollers to move the slurry, adjusting the slurry transfer rate by regulating the doctor blade gap. Typically, the coating thickness is controlled to meet weight requirements according to process specifications. Simultaneously, drying and heating remove solvents from the slurry spread on the substrate, ensuring good adhesion of the solid material. The advantages of this method are low viscosity requirements, easy adjustment of coating parameters, and no clogging issues. Disadvantages include relatively poor coating precision, difficulty in ensuring electrode consistency, and the potential impact of slurry properties from exposure to air between rollers. Additionally, the manual installation of the side baffles introduces some error.

[0003] The utility model patent with announcement number CN 205731880U specifically discloses a material blocking device for a coating machine and a coating machine using the material blocking device. The coating machine includes a material trough, the material trough includes a material blocking device, the material blocking device includes a material blocking plate, one side of the material blocking plate is a material blocking surface for blocking the slurry, the material blocking plate has a coating roller contact element on the coating roller contact element setting surface, the coating roller contact element has an inner circumferential surface that extends axially in the left and right direction for contacting and cooperating with the coating roller, and one end face of the coating roller contact element protrudes from the material blocking surface or is flush with the material blocking surface.

[0004] When using a scraper-type coating machine, leakage can easily occur if the baffle or scraper is not installed tightly, and the leaked slurry can transfer to the tabs, i.e., the non-coated area, causing the electrode to be scrapped. Utility Model Content

[0005] Therefore, it is necessary to provide a material blocking device for a doctor blade coating machine to address the aforementioned technical problems in the existing technology. By setting a side baffle and installing a sealing strip and an air bladder at the contact surface between the side baffle and the coating roller, the coating roller and the side baffle can be completely fitted together, making it less likely for material to leak during the coating process, thereby improving product quality.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0007] A material blocking device for a doctor blade coating machine, disposed on one side of the coating roller, includes:

[0008] Side baffle, the side baffle is in contact with the roller surface of the coating roller, and an installation groove is provided at the contact point between the side baffle and the coating roller;

[0009] The sealing assembly is installed in the mounting groove of the side baffle;

[0010] The sealing assembly includes a sealing strip and an airbag. The sealing strip is installed in the mounting groove, and the airbag is installed in the sealing strip and connected to an external air source through an air pipe.

[0011] Preferably, the shape and length of the sealing strip are adapted to the mounting groove, and the side of the sealing strip near the coating roller is curved and fits against the roller surface.

[0012] Preferably, the material blocking device further includes a lower baffle and a frame, with the lower baffle mounted on the frame.

[0013] Preferably, the side of the lower baffle near the coating roller is curved and fits against the roller surface of the coating roller.

[0014] Preferably, the side baffle is also provided with a slot, and the side baffle is connected to the lower baffle through the slot.

[0015] Preferably, the frame has a vertical groove for adjusting the position of the lower baffle in the vertical direction.

[0016] Preferably, the material blocking device further includes a material wiping assembly, which is disposed on the lower baffle.

[0017] Preferably, the wiping assembly includes a wiping plate, which is disposed on the lower baffle and on the side of the side baffle near the end of the coating roller.

[0018] Preferably, the wiping plate is an arc-shaped plate, and the arc surface of the wiping plate matches the arc surface of the coating roller.

[0019] Preferably, the wiping assembly further includes a wiping cloth, which is disposed between the wiping plate and the coating roller and is detachably connected to the wiping plate.

[0020] Due to the adoption of the above technical solutions, this utility model has the following advantages compared with the prior art:

[0021] This invention provides a material blocking device on one or both sides of the coating roller. The side baffle is provided with a sealing strip and an air bladder at the surface where it contacts the coating roller. The air bladder can be inflated as needed to ensure that the side baffle can completely fit the coating roller, making it less likely for material to leak during the coating process, thereby improving product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the side baffle in Example 2;

[0023] Figure 2 for Figure 1A sectional view;

[0024] Figure 3 This is a schematic diagram of the structure of Example 3;

[0025] Figure 4 This is a schematic diagram of the structure of Example 4.

[0026] The components include: 1. wiping assembly; 2. lower baffle; 3. coating roller; 4. side baffle; 41. slot; 42. sealing strip; 43. airbag; and 5. frame. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] Currently, existing blade coating machines are prone to leakage during coating when the baffle or scraper is not installed tightly. This leakage can cause the slurry to transfer to the tabs (non-coated areas), resulting in the scrapping of the electrode sheets.

[0030] Based on this, this application provides a material blocking device for a doctor blade coating machine, which is disposed on one side of the coating roller and includes: a side baffle, which is in contact with the roller surface of the coating roller, and an installation groove is provided at the contact point between the side baffle and the coating roller; a sealing assembly, which is disposed in the installation groove of the side baffle; wherein, the sealing assembly includes a sealing strip and an air bladder, the sealing strip is disposed in the installation groove, the air bladder is disposed in the sealing strip, and is connected to an external air source through an air pipe.

[0031] This application improves product quality by setting a side baffle and installing a sealing strip and an airbag at the contact surface between the side baffle and the coating roller, so that the coating roller and the side baffle can fit together completely, making it less likely for material to leak during the coating process.

[0032] The following is in conjunction with the appendix Figures 1 to 3 The present invention will be described in detail below with reference to specific embodiments.

[0033] Example 1

[0034] In this embodiment, the material blocking device of the doctor blade coating machine is located on one side of the coating roller 3, specifically on the front or rear side of the coating roller 3, depending on actual needs. The material blocking device includes a side baffle 4 and a sealing assembly.

[0035] The side baffle 4 is vertically arranged and perpendicular to the length direction of the coating roller 3. The side baffle 4 is in contact with the roller surface of the coating roller 3, and an installation groove is provided on the side baffle 4 at the contact point with the coating roller 3.

[0036] To ensure a closer fit between the side baffle 4 and the coating roller 3, a sealing assembly is provided in this embodiment. The sealing assembly is installed in the mounting groove of the side baffle 4 and includes a sealing strip 42 and an airbag 43. The sealing strip 42 is installed in the mounting groove, and the airbag 43 is installed inside the sealing strip 42 and is connected to an external air source through an air pipe.

[0037] In order to achieve better fit and thus achieve material blocking, the shape and length of the sealing strip 42 are adapted to the mounting groove. The side of the sealing strip 42 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0038] In this embodiment, the sealing strip 42 is made of chemically resistant silicone material to ensure that it will not age or deform under prolonged contact with various coatings. The pressurized gas filled in the airbag 43 is selected from air, oxygen, or carbon dioxide, and the pressure of the pressurized gas filled in the airbag 43 is 0.1-0.5 MPa.

[0039] In this embodiment, the airbag 43 can be inflated as needed to ensure that the side baffle 4 can completely fit the coating roller 3, making it less likely for material to leak during the coating process, thereby improving product quality.

[0040] Example 2

[0041] In this embodiment, the material blocking device of the doctor blade coating machine is located on one side of the coating roller 3, specifically on the front or rear side of the coating roller 3, depending on actual needs. The material blocking device includes a side baffle 4 and a sealing assembly.

[0042] The side baffle 4 is vertically arranged and perpendicular to the length direction of the coating roller 3. The side baffle 4 is in contact with the roller surface of the coating roller 3, and an installation groove is provided on the side baffle 4 at the contact point with the coating roller 3.

[0043] To ensure a closer fit between the side baffle 4 and the coating roller 3, a sealing assembly is provided in this embodiment. The sealing assembly is installed in the mounting groove of the side baffle 4 and includes a sealing strip 42 and an airbag 43. The sealing strip 42 is installed in the mounting groove, and the airbag 43 is installed inside the sealing strip 42 and is connected to an external air source through an air pipe.

[0044] In order to achieve better fit and thus achieve material blocking, the shape and length of the sealing strip 42 are adapted to the mounting groove. The side of the sealing strip 42 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0045] In this embodiment, the sealing strip 42 is made of chemically resistant silicone material to ensure that it will not age or deform under prolonged contact with various coatings. The pressurized gas filled in the airbag 43 is selected from air, oxygen, or carbon dioxide, and the pressure of the pressurized gas filled in the airbag 43 is 0.1-0.5 MPa.

[0046] In this embodiment, the airbag 43 can be inflated as needed to ensure that the side baffle 4 can completely fit the coating roller 3, making it less likely for material to leak during the coating process, thereby improving product quality.

[0047] In this embodiment, the material blocking device further includes a lower baffle 2 and a frame 5, with the lower baffle 2 horizontally mounted on the frame 5. The side of the lower baffle 2 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0048] In this embodiment, as shown in the appendix Figures 1 to 2 As shown, a slot 41 is also provided on the side baffle 4, and the side baffle 4 is connected to the lower baffle 2 through the slot 41.

[0049] The width and number of side baffles 4 are not limited; there can be one or more, or the width can be set to a wider value as needed. In this embodiment, for example, there are two side baffles 4, spaced apart on the lower baffle 2.

[0050] Example 3

[0051] In this embodiment, the material blocking device of the doctor blade coating machine is located on one side of the coating roller 3, specifically on the front or rear side of the coating roller 3, depending on actual needs. The material blocking device includes a side baffle 4 and a sealing assembly.

[0052] The side baffle 4 is vertically arranged and perpendicular to the length direction of the coating roller 3. The side baffle 4 is in contact with the roller surface of the coating roller 3, and an installation groove is provided on the side baffle 4 at the contact point with the coating roller 3.

[0053] To ensure a closer fit between the side baffle 4 and the coating roller 3, a sealing assembly is provided in this embodiment. The sealing assembly is installed in the mounting groove of the side baffle 4 and includes a sealing strip 42 and an airbag 43. The sealing strip 42 is installed in the mounting groove, and the airbag 43 is installed inside the sealing strip 42 and is connected to an external air source through an air pipe.

[0054] In order to achieve better fit and thus achieve material blocking, the shape and length of the sealing strip 42 are adapted to the mounting groove. The side of the sealing strip 42 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0055] In this embodiment, the sealing strip 42 is made of chemically resistant silicone material to ensure that it will not age or deform under prolonged contact with various coatings. The pressurized gas filled in the airbag 43 is selected from air, oxygen, or carbon dioxide, and the pressure of the pressurized gas filled in the airbag 43 is 0.1-0.5 MPa.

[0056] In this embodiment, the airbag 43 can be inflated as needed to ensure that the side baffle 4 can completely fit the coating roller 3, making it less likely for material to leak during the coating process, thereby improving product quality.

[0057] In this embodiment, the material blocking device further includes a lower baffle 2 and a frame 5, with the lower baffle 2 horizontally mounted on the frame 5. The side of the lower baffle 2 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0058] In this embodiment, a slot 41 is also provided on the side baffle 4, and the side baffle 4 is connected to the lower baffle 2 through the slot 41.

[0059] The width and number of side baffles 4 are not limited; there can be one or more, or the width can be set to a wider value as needed. In this embodiment, for example, there are two side baffles 4, spaced apart on the lower baffle 2.

[0060] In this embodiment, as shown in the appendix Figure 3 As shown, the frame 5 has a sliding groove along the vertical direction for adjusting the position of the lower baffle 2 in the vertical direction.

[0061] Example 4

[0062] In this embodiment, the material blocking device of the doctor blade coating machine is located on one side of the coating roller 3, specifically on the front or rear side of the coating roller 3, depending on actual needs. The material blocking device includes a side baffle 4 and a sealing assembly.

[0063] The side baffle 4 is vertically arranged and perpendicular to the length direction of the coating roller 3. The side baffle 4 is in contact with the roller surface of the coating roller 3, and an installation groove is provided on the side baffle 4 at the contact point with the coating roller 3.

[0064] To ensure a closer fit between the side baffle 4 and the coating roller 3, a sealing assembly is provided in this embodiment. The sealing assembly is installed in the mounting groove of the side baffle 4 and includes a sealing strip 42 and an airbag 43. The sealing strip 42 is installed in the mounting groove, and the airbag 43 is installed inside the sealing strip 42 and is connected to an external air source through an air pipe.

[0065] In order to achieve better fit and thus achieve material blocking, the shape and length of the sealing strip 42 are adapted to the mounting groove. The side of the sealing strip 42 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0066] In this embodiment, the sealing strip 42 is made of chemically resistant silicone material to ensure that it will not age or deform under prolonged contact with various coatings. The pressurized gas filled in the airbag 43 is selected from air, oxygen, or carbon dioxide, and the pressure of the pressurized gas filled in the airbag 43 is 0.1-0.5 MPa.

[0067] In this embodiment, the airbag 43 can be inflated as needed to ensure that the side baffle 4 can completely fit the coating roller 3, making it less likely for material to leak during the coating process, thereby improving product quality.

[0068] In this embodiment, the material blocking device further includes a lower baffle 2 and a frame 5, with the lower baffle 2 horizontally mounted on the frame 5. The side of the lower baffle 2 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0069] In this embodiment, a slot 41 is also provided on the side baffle 4, and the side baffle 4 is connected to the lower baffle 2 through the slot 41.

[0070] The width and number of side baffles 4 are not limited; there can be one or more, or the width can be set to a wider value as needed. In this embodiment, for example, there are two side baffles 4, spaced apart on the lower baffle 2.

[0071] In this embodiment, the frame 5 has a sliding groove along the vertical direction for adjusting the position of the lower baffle 2 in the vertical direction.

[0072] In this embodiment, as Figure 4 As shown, to prevent material accumulation, the material blocking device also includes a wiping assembly 1, which is disposed on the lower baffle 2. Specifically, the wiping assembly 1 includes a wiping plate, which is disposed on the lower baffle 2 and located on the side of the side baffle 4 near the end of the coating roller 3. The wiping plate is an arc-shaped plate, and the arc surface of the wiping plate matches the arc surface of the coating roller 3.

[0073] Example 5

[0074] In this embodiment, the material blocking device of the doctor blade coating machine is located on one side of the coating roller 3, specifically on the front or rear side of the coating roller 3, depending on actual needs. The material blocking device includes a side baffle 4 and a sealing assembly.

[0075] The side baffle 4 is vertically arranged and perpendicular to the length direction of the coating roller 3. The side baffle 4 is in contact with the roller surface of the coating roller 3, and an installation groove is provided on the side baffle 4 at the contact point with the coating roller 3.

[0076] To ensure a closer fit between the side baffle 4 and the coating roller 3, a sealing assembly is provided in this embodiment. The sealing assembly is installed in the mounting groove of the side baffle 4 and includes a sealing strip 42 and an airbag 43. The sealing strip 42 is installed in the mounting groove, and the airbag 43 is installed inside the sealing strip 42 and is connected to an external air source through an air pipe.

[0077] In order to achieve better fit and thus achieve material blocking, the shape and length of the sealing strip 42 are adapted to the mounting groove. The side of the sealing strip 42 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0078] In this embodiment, the sealing strip 42 is made of chemically resistant silicone material to ensure that it will not age or deform under prolonged contact with various coatings. The pressurized gas filled in the airbag 43 is selected from air, oxygen, or carbon dioxide, and the pressure of the pressurized gas filled in the airbag 43 is 0.1-0.5 MPa.

[0079] In this embodiment, the airbag 43 can be inflated as needed to ensure that the side baffle 4 can completely fit the coating roller 3, making it less likely for material to leak during the coating process, thereby improving product quality.

[0080] In this embodiment, the material blocking device further includes a lower baffle 2 and a frame 5, with the lower baffle 2 horizontally mounted on the frame 5. The side of the lower baffle 2 near the coating roller 3 is curved and fits against the roller surface of the coating roller 3.

[0081] In this embodiment, a slot 41 is also provided on the side baffle 4, and the side baffle 4 is connected to the lower baffle 2 through the slot 41.

[0082] The width and number of side baffles 4 are not limited; there can be one or more, or the width can be set to a wider value as needed. In this embodiment, for example, there are two side baffles 4, spaced apart on the lower baffle 2.

[0083] In this embodiment, the frame 5 has a sliding groove along the vertical direction for adjusting the position of the lower baffle 2 in the vertical direction.

[0084] In this embodiment, to prevent material accumulation, the material blocking device further includes a wiping assembly 1, which is disposed on the lower baffle 2. Specifically, the wiping assembly 1 includes a wiping plate, which is disposed on the lower baffle 2 and located on the side of the side baffle 4 near the end of the coating roller 3. The wiping plate is an arc-shaped plate, and the arc surface of the wiping plate matches the arc surface of the coating roller 3.

[0085] In this embodiment, the wiping assembly 1 also includes a wiping cloth, which is disposed between the wiping plate and the coating roller 3 and is detachably connected to the wiping plate.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A material blocking device for a doctor blade coating machine, disposed on one side of the coating roller, characterized in that, include: A side baffle is provided, which is in contact with the roller surface of the coating roller, and an installation groove is provided at the contact point between the side baffle and the coating roller. A sealing assembly is disposed within the mounting groove of the side baffle; The sealing assembly includes a sealing strip and an airbag. The sealing strip is disposed in the mounting groove, and the airbag is disposed in the sealing strip and connected to an external air source through an air pipe.

2. The material blocking device for a scraper-type coating machine according to claim 1, characterized in that, The shape and length of the sealing strip are adapted to the mounting groove. The side of the sealing strip closest to the coating roller is curved and fits against the roller surface of the coating roller.

3. The material blocking device for a scraper-type coating machine according to claim 1, characterized in that, The material blocking device also includes a lower baffle and a frame, with the lower baffle mounted on the frame.

4. The material blocking device for a scraper-type coating machine according to claim 3, characterized in that, The side of the lower baffle near the coating roller is curved and fits against the roller surface of the coating roller.

5. The material blocking device for a scraper-type coating machine according to claim 3, characterized in that, The side baffle is also provided with a slot, and the side baffle is connected to the lower baffle through the slot.

6. The material blocking device for a scraper-type coating machine according to claim 3, characterized in that, The frame has a vertical groove for adjusting the position of the lower baffle in the vertical direction.

7. The material blocking device for a scraper-type coating machine according to claim 1, characterized in that, The material blocking device also includes a material wiping assembly, which is disposed on the lower baffle.

8. The material blocking device for a scraper-type coating machine according to claim 7, characterized in that, The wiping assembly includes a wiping plate, which is disposed on the lower baffle and on the side of the side baffle near the end of the coating roller.

9. The material blocking device for a scraper-type coating machine according to claim 8, characterized in that, The wiping plate is an arc-shaped plate, and the arc surface of the wiping plate matches the arc surface of the coating roller.

10. The material blocking device for a scraper-type coating machine according to claim 8, characterized in that, The wiping assembly also includes a wiping cloth, which is disposed between the wiping plate and the coating roller and is detachably connected to the wiping plate.

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