A comma scraper assembly

Abstract

This utility model relates to the field of comma scraper technology and discloses a comma scraper assembly, including a frame, a comma scraper body, and a back roller. The comma scraper body includes an inner shaft, an outer cylinder, and multiple adjusting bolts. The outer cylinder is movably fitted onto the inner shaft, and a first scraper opening is formed on the outer wall of the outer cylinder, extending axially along the outer cylinder. Multiple first through holes are spaced along the axial direction on the side of the outer cylinder opposite to the first scraper opening. Multiple threaded holes are spaced along the axial direction on the outer wall of the inner shaft. The adjusting bolts pass through the first through holes and are threadedly connected to the corresponding threaded holes. This utility model, through the movable fitting of the inner shaft and the outer cylinder, combined with the axially distributed adjusting bolts and threaded hole structure, forms an adjustment mechanism that can specifically correct the deformation of the outer cylinder. This effectively solves the problem of bending and sagging that easily occurs in wide outer cylinders due to their large size, ensuring that the first scraper opening maintains good flatness along the back roller.

Description

Technical Field

[0001] This utility model relates to the field of comma scraper technology, and in particular to a comma scraper assembly. Background Technology

[0002] In surface coating processes for substrates such as current collectors and thin films, the comma-shaped doctor blade assembly is a core component for achieving precise adhesive application and controlling coating thickness, and is widely used in the production and processing of batteries, electronic thin films, and other fields. With the expanding product specification requirements of the battery industry, the application of wide-width current collectors is increasing, and correspondingly, the precision requirements for comma-shaped doctor blade assemblies adapted to wide-width current collectors are also continuously improving.

[0003] In existing comma-shaped scraper assemblies, the outer cylinder, as the load-bearing structure for the scraper nozzle, needs to match the size of the wide current collector; therefore, the outer cylinder is often designed to be relatively long. However, a long outer cylinder is prone to bending deformation under its own weight, and this deformation will further intensify during long-term use. Simultaneously, when assembling the outer cylinder and inner shaft, the concentricity of the two is difficult to guarantee due to the wide structure. These bending deformation and concentricity deviations directly result in the scraper nozzle on the outer cylinder not maintaining stable flatness, leading to subsequent processed products failing to meet performance requirements and hindering the stable development of wide current collector processing technology. Utility Model Content

[0004] The present invention aims to improve at least one technical problem in the prior art.

[0005] This utility model provides a comma scraper assembly, including: frame; The comma scraper body includes an inner shaft, an outer cylinder, and multiple adjusting bolts. The two ends of the inner shaft are mounted on the frame. The outer cylinder is movably fitted onto the inner shaft. A first scraper opening is formed on the outer wall of the outer cylinder, extending axially along the outer cylinder. Multiple first through holes are spaced apart on the side of the outer cylinder opposite to the first scraper opening along the axial direction of the outer cylinder. Multiple threaded holes are spaced apart on the outer wall of the inner shaft along the axial direction of the inner shaft. The adjusting bolts pass through the first through holes and are threadedly connected to the corresponding threaded holes. A back roller is rotatably mounted on the frame at both ends. The back roller is parallel to the outer cylinder and is located below the comma-shaped scraper body. The first scraper blade faces the back roller.

[0006] The beneficial effects of this utility model are as follows: This utility model forms an adjustment mechanism that can specifically correct the deformation of the outer cylinder by means of the movable sleeve cooperation between the inner shaft and the outer cylinder, combined with the adjusting bolts and threaded hole structure distributed along the axial direction. This effectively solves the problem of bending and sagging that is prone to occur in wide outer cylinders due to their large size, and keeps the first scraper edge along the back roller with good flatness.

[0007] As a further improvement to the above technical solution, a second scraper opening is also formed on the outer wall of the outer cylinder. The second scraper opening extends along the axial direction of the outer cylinder. The first scraper opening and the second scraper opening are respectively located on both sides of the radial direction of the outer cylinder. A plurality of second through holes are provided on the side of the outer cylinder opposite to the second scraper opening along the axial direction of the outer cylinder.

[0008] As a further improvement to the above technical solution, a first insert nut is provided on the first through hole, and the adjusting bolt passes through the first insert nut and is threadedly connected to the corresponding threaded hole; a second insert nut is provided on the second through hole.

[0009] As a further improvement to the above technical solution, the first insert nut is fixedly connected to the inner wall of the first through hole, and the inner hole of the first insert nut is threadedly engaged with the adjusting bolt; the second insert nut is fixedly connected to the inner wall of the second through hole.

[0010] As a further improvement to the above technical solution, an annular cavity is formed between the outer wall of the inner shaft and the inner wall of the outer cylinder. The adjusting bolt passes through the first insert nut and extends into the annular cavity, and then is threadedly connected to the corresponding threaded hole.

[0011] As a further improvement to the above technical solution, one end of the first insert nut extends into the annular cavity, and one end of the second insert nut extends into the annular cavity and abuts against the outer wall of the inner shaft.

[0012] As a further improvement to the above technical solution, the comma scraper assembly also includes a drive member and a scraper seat. The fixed end of the drive member is disposed on the frame, and the scraper seat is disposed on the movable end of the drive member. Both ends of the inner shaft are mounted on the scraper seat. The drive member is used to drive the scraper seat to move, thereby causing the comma scraper body to move closer to or away from the back roller.

[0013] As a further improvement to the above technical solution, the driving component includes a cylinder, a slider, and a guide rail. The cylinder body is fixedly mounted on the frame, the guide rail is fixedly mounted on the frame, the guide rail extends in a direction perpendicular to the axis of the back roller, the slider is movably mounted on the guide rail, the slider is connected to the output end of the cylinder, the cylinder drives the slider to move along the guide rail, and the scraper seat is fixedly mounted on the slider.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a comma scraper assembly according to one embodiment; Figure 2 This is a cross-sectional view of a comma scraper assembly according to one embodiment.

[0016] In the attached diagram: 300 - back roller; 401 - inner shaft; 402 - outer cylinder; 4021 - first scraper blade; 4022 - second scraper blade; 4023 - first insert nut; 4024 - second insert nut; 403 - adjusting bolt; 404 - annular cavity; 601 - cylinder; 602 - slider; 603 - guide rail; 604 - scraper holder. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] The following is combined Figures 1 to 2 The embodiments of this utility model are described below.

[0021] This utility model embodiment provides a comma scraper assembly, including: frame; The comma scraper body includes an inner shaft 401, an outer cylinder 402, and multiple adjusting bolts 403. The two ends of the inner shaft 401 are mounted on the frame. The outer cylinder 402 is movably sleeved on the inner shaft 401. A first scraper opening 4021 is formed on the outer wall of the outer cylinder 402. The first scraper opening 4021 extends along the axial direction of the outer cylinder 402. Multiple first through holes are spaced apart along the axial direction of the outer cylinder 402 on the side opposite to the first scraper opening 4021. Multiple threaded holes are spaced apart along the axial direction of the inner shaft 401 on the outer wall of the inner shaft 401. The adjusting bolts 403 pass through the first through holes and are threadedly connected to the corresponding threaded holes. The back roller 300 has two ends rotatably mounted on the frame. The back roller 300 and the outer cylinder 402 are arranged parallel to each other. The back roller 300 is located below the comma scraper body, and the first scraper opening 4021 faces the back roller 300.

[0022] In this embodiment, the comma scraper assembly is supported by a frame. The inner shaft 401 in the comma scraper body serves as a fixed base, and the outer cylinder 402 is movably fitted onto the inner shaft 401 for relative adjustment. The first scraper opening 4021 on the outer cylinder 402 is used for working with the current collector. Multiple first through holes are opened on the side of the outer cylinder 402 opposite to the first scraper opening 4021. These holes, together with the threaded holes on the inner shaft 401 and the adjusting bolts 403 passing through the through holes, form a multi-point adjustment structure distributed along the axial direction. By tightening or loosening the adjusting bolts 403, the flatness of the easily bent outer cylinder 402 (especially the wide outer cylinder 402 designed for wide current collectors) can be corrected, so that a relatively stable gap is maintained between the first scraper opening 4021 and the parallel back rollers 300.

[0023] Furthermore, a second scraper opening 4022 is formed on the outer wall of the outer cylinder 402. The second scraper opening 4022 extends along the axial direction of the outer cylinder 402. The first scraper opening 4021 and the second scraper opening 4022 are respectively located on both sides of the outer cylinder 402 in the radial direction. A plurality of second through holes are provided on the side of the outer cylinder 402 that is opposite to the second scraper opening 4022 along the axial direction of the outer cylinder 402.

[0024] In this embodiment, the second scraper opening 4022 and the first scraper opening 4021 are symmetrically distributed on both sides of the outer cylinder 402 radially. When the first scraper opening 4021 wears out after long-term use or requires cleaning and maintenance, there is no need to disassemble the outer cylinder 402 or stop the equipment for long-term maintenance. Simply rotate the outer cylinder 402 around the inner shaft 401 so that the second scraper opening 4022, which was originally facing away from the back roller 300, faces the back roller 300, and the operation can be quickly resumed, reducing equipment downtime. The second through hole opened on the side of the outer cylinder 402 opposite to the second scraper opening 4022 matches the distribution pattern and hole diameter of the first through hole. When switching to the second scraper opening 4022, the adjusting bolt 403 can still pass through the second through hole and engage with the threaded hole of the inner shaft 401, continuing the multi-point adjustment function and avoiding the decrease in accuracy caused by the bending of the outer cylinder 402 after switching.

[0025] Furthermore, a first insert nut 4023 is provided on the first through hole, and the adjusting bolt 403 passes through the first insert nut 4023 and is threadedly connected to the corresponding threaded hole; a second insert nut 4024 is provided on the second through hole.

[0026] The first insert nut 4023 and the second insert nut 4024 respectively provided at the first through hole and the second through hole in this embodiment can enhance the structural strength of the through hole of the outer cylinder 402, avoid wear on the inner wall of the through hole when the adjusting bolt 403 is repeatedly screwed in and out, reduce the problem of thread failure or hole diameter enlargement of the outer cylinder 402 due to long-term use, and thus improve the connection stability between the adjusting bolt 403 and the outer cylinder 402.

[0027] Furthermore, the first insert nut 4023 is fixedly connected to the inner wall of the first through hole, and the inner hole of the first insert nut 4023 is threadedly engaged with the adjusting bolt 403; the second insert nut 4024 is fixedly connected to the inner wall of the second through hole.

[0028] In this embodiment, the fixed connection between the first insert nut 4023 and the inner wall of the first through hole, as well as the threaded engagement between the inner hole and the adjusting bolt 403, further strengthens the integrity of the insert nut and the outer cylinder 402. This allows the adjusting bolt 403 to apply force to the outer cylinder 402 more stably during tightening, reducing the impact of relative displacement between the insert nut and the through hole on the adjustment effect. Similarly, the fixed connection between the second insert nut 4024 and the inner wall of the second through hole also ensures structural stability when switching to the second scraper blade 4022. When switching to the second scraper blade 4022, the inner hole of the second insert nut 4024 also engages with the threaded engagement of the adjusting bolt 403, providing a reliable basis for the double-sided scraping of the outer cylinder 402.

[0029] Furthermore, an annular cavity 404 is formed between the outer wall of the inner shaft 401 and the inner wall of the outer cylinder 402. The adjusting bolt 403 passes through the first insert nut 4023 and extends into the annular cavity 404, and then is threadedly connected to the corresponding threaded hole.

[0030] In this embodiment, the annular cavity 404 formed between the inner shaft 401 and the outer cylinder 402 effectively reduces the direct contact area between the outer cylinder 402 and the inner shaft 401, reduces the large-area contact friction between the inner wall of the outer cylinder 402 and the outer wall of the inner shaft 401, reduces mechanical wear during long-term use, and extends the service life of the component.

[0031] Furthermore, one end of the first insert nut 4023 extends into the annular cavity 404, and one end of the second insert nut 4024 extends into the annular cavity 404 and abuts against the outer wall of the inner shaft 401.

[0032] In this embodiment, the first insert nut 4023 and the second insert nut 4024 are located on opposite sides of the outer cylinder 402 radially, with one end of each extending into the annular cavity 404. In actual use, since the back roller 300 is located below the comma scraper body, when the first scraper nozzle 4021 is used, the first scraper nozzle 4021 faces the back roller 300, and the first insert nut 4023 on the opposite side is located away from the back roller 300. The adjusting bolt 403 passes through the first insert nut 4023 and is threadedly connected to the inner shaft 401 (through a threaded hole). At this time, the second insert nut 4024, located near the back roller 300 (i.e., on the lower side under gravity), abuts against the outer wall of the inner shaft 401, utilizing the support of the inner shaft 401. The supporting function resists the bending and sagging tendency of the outer cylinder 402 due to gravity. When switching to the second scraper opening 4022, the second scraper opening 4022 faces the back roller 300, and the second insert nut 4024 is located on the side away from the back roller 300. The adjusting bolt 403 passes through the second insert nut 4024 and is threadedly connected to the inner shaft 401 (through a threaded hole). At this time, the first insert nut 4023 is located on the side closer to the back roller 300 (i.e., the lower side under the action of gravity) and abuts against the outer wall of the inner shaft 401, continuing to bear the gravity support function. This design allows the outer cylinder 402 to maintain stable contact with the inner shaft 401 through the abutment under the action of gravity in both working states.

[0033] Furthermore, the comma scraper assembly also includes a drive member and a scraper holder 604. The fixed end of the drive member is disposed on the frame, and the scraper holder 604 is disposed on the movable end of the drive member. Both ends of the inner shaft 401 are mounted on the scraper holder 604. The drive member is used to drive the scraper holder 604 to move, thereby causing the comma scraper body to move closer to or away from the back roller 300.

[0034] In this embodiment, the driving component enables the overall movement of the comma scraper body relative to the back roller 300. By driving the scraper seat 604 to move, the distance between the inner shaft 401 and the outer cylinder 402 and the back roller 300 can be flexibly adjusted to adapt to the operation requirements of substrates of different thicknesses or to achieve separation in non-working state, thereby improving the ease of operation and making the comma scraper assembly more suitable for automated production scenarios.

[0035] Furthermore, the driving component includes a cylinder 601, a slider 602, and a guide rail 603. The cylinder body of the cylinder 601 is fixedly mounted on the frame, and the guide rail 603 is fixedly mounted on the frame. The guide rail 603 extends in a direction perpendicular to the axis of the back roller 300. The slider 602 is movably mounted on the guide rail 603 and is connected to the output end of the cylinder 601. The cylinder 601 drives the slider 602 to move along the guide rail 603. The scraper seat 604 is fixedly mounted on the slider 602.

[0036] In this embodiment, the driving component adopts a combination structure of cylinder 601, slider 602 and guide rail 603. Cylinder 601 provides power output, and guide rail 603 extends in a direction perpendicular to the axis of back roller 300, so that slider 602 drives scraper seat 604 and comma scraper body to move smoothly in a straight line, improving the consistency of the axial direction of the gap between scraper mouth and back roller 300, reducing the problem of inconsistent local gaps. At the same time, the cooperation between slider 602 and guide rail 603 reduces the shaking during the movement, further improving the stability and accuracy of adjustment.

[0037] The preferred embodiments of the present invention have been described in detail above, but the present disclosure is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present disclosure.

Claims

1. A comma scraper assembly, characterized in that, include: frame; The comma scraper body includes an inner shaft (401), an outer cylinder (402), and multiple adjusting bolts (403). The two ends of the inner shaft (401) are mounted on the frame. The outer cylinder (402) is movably fitted onto the inner shaft (401). A first scraper opening (4021) is formed on the outer wall of the outer cylinder (402). The first scraper opening (4021) extends along the axial direction of the outer cylinder (402). Multiple first through holes are spaced apart along the axial direction of the outer cylinder (402) on the side opposite to the first scraper opening (4021). Multiple threaded holes are spaced apart along the axial direction of the inner shaft (401) on the outer wall of the inner shaft (401). The adjusting bolts (403) pass through the first through holes and are threadedly connected to the corresponding threaded holes. The back roller (300) is rotatably mounted on the frame at both ends. The back roller (300) and the outer cylinder (402) are arranged parallel to each other. The back roller (300) is located below the comma scraper body, and the first scraper mouth (4021) faces the back roller (300).

2. The comma scraper assembly according to claim 1, characterized in that, A second scraper opening (4022) is also formed on the outer wall of the outer cylinder (402). The second scraper opening (4022) extends along the axial direction of the outer cylinder (402). The first scraper opening (4021) and the second scraper opening (4022) are respectively located on both sides of the radial direction of the outer cylinder (402). A plurality of second through holes are provided on the side of the outer cylinder (402) opposite to the second scraper opening (4022) along the axial direction of the outer cylinder (402).

3. The comma scraper assembly according to claim 2, characterized in that, The first through hole is provided with a first insert nut (4023), and the adjusting bolt (403) passes through the first insert nut (4023) and is threadedly connected to the corresponding threaded hole; the second through hole is provided with a second insert nut (4024).

4. The comma scraper assembly according to claim 3, characterized in that, The first insert nut (4023) is fixedly connected to the inner wall of the first through hole, and the inner hole of the first insert nut (4023) is threadedly engaged with the adjusting bolt (403); the second insert nut (4024) is fixedly connected to the inner wall of the second through hole.

5. The comma scraper assembly according to claim 3, characterized in that, An annular cavity (404) is formed between the outer wall of the inner shaft (401) and the inner wall of the outer cylinder (402). The adjusting bolt (403) passes through the first insert nut (4023) and extends into the annular cavity (404), and then is threadedly connected to the corresponding threaded hole.

6. The comma scraper assembly according to claim 5, characterized in that, One end of the first insert nut (4023) extends into the annular cavity (404), and one end of the second insert nut (4024) extends into the annular cavity (404) and abuts against the outer wall of the inner shaft (401).

7. The comma scraper assembly according to claim 1, characterized in that, The comma scraper assembly also includes a drive unit and a scraper holder (604). The fixed end of the drive unit is disposed on the frame, and the scraper holder (604) is disposed on the movable end of the drive unit. Both ends of the inner shaft (401) are mounted on the scraper holder (604). The drive unit is used to drive the scraper holder (604) to move, thereby causing the comma scraper body to move closer to or away from the back roller (300).

8. The comma scraper assembly according to claim 7, characterized in that, The driving component includes a cylinder (601), a slider (602), and a guide rail (603). The cylinder body of the cylinder (601) is fixedly mounted on the frame. The guide rail (603) is fixedly mounted on the frame and extends along a direction perpendicular to the axis of the back roller (300). The slider (602) is movably mounted on the guide rail (603) and is connected to the output end of the cylinder (601). The cylinder (601) drives the slider (602) to move along the guide rail (603). The scraper seat (604) is fixedly mounted on the slider (602).

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