Rolling scraper dust removal device and rolling equipment

Abstract

The utility model discloses a rolling scraper dust removal device and rolling equipment, which are used for collecting dust scraped by a scraper assembly, and the scraper assembly comprises a scraper blade and a double-layer dust collection assembly; the double-layer dust collection assembly comprises an outer-layer dust collection box and an inner-layer dust collection box, and the scraper assembly and the inner-layer dust collection box are sequentially arranged in the outer-layer dust collection box from top to bottom; the inner-layer dust collection box comprises a dust collection opening, and the dust collection opening corresponds to the scraping end of the scraper blade in position. The front wall of the outer-layer dust collection box is provided with a dust collection opening matched with the roller face of a roller needing dust removal, and the scraping end of the scraper blade protrudes out of the dust collection opening and abuts against the roller face of the roller. The dust collection device solves the problem that scraper dust cannot completely fall into the dust collection box under the action of gravity, avoids workshop environment pollution caused by the fact that the dust freely escapes to other areas, ensures that dust particles cannot adhere to a roller, and improves the production yield of pole pieces.

Description

Technical Field

[0001] This utility model relates to the field of battery rolling technology, and in particular to a rolling scraper dust removal device and rolling equipment. Background Technology

[0002] When the electrode passes through the rolling mill, it is subjected to significant extrusion pressure, which compresses the electrode to a certain thickness. Similarly, the electrode exerts a reaction force on the rolling mill. Under this pressure, some of the coating on the electrode transfers to the surface of the rolling mill. Large particles adhering to the rolling mill surface leave indentations on the electrode surface upon the next contact, resulting in defective and scrapped electrodes. If regularly occurring, dotted defects flow to the next process to produce batteries, lithium plating will occur in the batteries. After introducing laser roller cleaning technology, large particles on the rolling mill surface during the rolling process are mainly removed by a scraper.

[0003] The existing scraper mechanism scrapes off large dust particles primarily by gravity, which are then sucked away by the negative pressure of the dust collection box. However, the dust scraped off by the scraper is relatively light and will disperse freely into the air after being scraped off, causing pollution to the workshop environment. Furthermore, some residual large dust particles will enter between the two rollers, pressing into the electrode sheets and causing poor electrode appearance. At the same time, the above dust removal mechanism cannot remove all large dust particles in time, and dust will accumulate inside the dust collection box, greatly increasing the probability of dust entering between the two rollers, and multiplying the frequency of roller pressing and sticking.

[0004] Material adhesion to the rolling mill rolls occurs during high-speed production and is usually only detected when the machine is stopped. This adhesion results in a large number of scrapped electrode sheets during continuous production. Therefore, a roller scraper dust removal device needs to be designed to solve this problem. Utility Model Content

[0005] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a roller-pressed scraper dust removal device and roller pressing equipment, which solves the problem that scraper dust cannot fall into the dust collection box by gravity, avoids dust from randomly escaping to other areas and causing environmental pollution in the workshop, ensures that dust particles do not stick to the roller, and improves the yield of electrode production.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a roller-pressed scraper dust removal device, comprising a double-layer dust collection assembly and a scraper assembly; the double-layer dust collection assembly includes an outer dust collection box and an inner dust collection box, and the scraper assembly and the inner dust collection box are arranged sequentially from top to bottom inside the outer dust collection box; the scraper assembly includes a scraper blade, and the inner dust collection box includes a dust collection port, the dust collection port being positioned corresponding to the scraping end of the scraper blade; the front wall of the outer dust collection box is provided with a dust collection port adapted to the roller surface to be dusted, and the scraping end of the scraper blade protrudes from the dust collection port and abuts against the roller surface.

[0007] Furthermore, the outer dust collection box includes a dust collection box body and an openable dust collection box lid located thereon. Both the dust collection box body and the dust collection box lid have recessed grooves on their side walls for the fixed installation of the scraper assembly. The dust collection box lid can be opened to facilitate the cleaning of residual dust inside after vacuuming, and also facilitates the cleaning, maintenance, and upkeep of the scraper assembly placed inside the outer dust collection box. It also allows for timely replacement of damaged scraper blades.

[0008] Furthermore, the dust collection box cover is L-shaped, and one side of the L-shape is hinged to the top side of the dust collection box body via a hinge. The hinge design allows for easy opening of the dust collection box cover, facilitating cleaning and routine maintenance of the scraper assembly placed inside the dust collection box, thus simplifying operation for staff.

[0009] See appendix Figure 2 Specifically, there are two hinges, which are located on the rear wall of the outer dust collection box and correspond to the position of the dust collection port on the front wall. The rear wall of the dust collection box cover is also provided with a handle that is easy for staff to open. The handle is made of stainless steel.

[0010] Furthermore, the dust collection box body is provided with several rotatable baffles on the side that is hinged to the dust collection box cover. When the dust collection box cover is closed, at least a portion of the baffles abuts against the hinged side of the dust collection box cover. By providing these baffles, when the cover is closed, the baffles abut against the dust collection box cover, preventing dust from escaping when the dust collection box cover is opened during the scraping of paint by the scraper blade. When it is necessary to clean the inside of the double-layer dust collection assembly, rotating the baffles will prevent them from abutting against the dust collection box cover and will not interfere with the rotation of the dust collection box cover, thus allowing the operator to open the dust collection box cover to clean the inside of the outer dust collection box.

[0011] Furthermore, the bottom inner wall of the outer dust collection box has at least one dust collection groove along its length, and the bottom outer wall has a dust collection pipe connected to the dust collection groove along its length. One end of the dust collection pipe is sealed, and the other end is connected to a negative pressure suction device. Dust falling into the outer dust collection box is drawn into the dust collection pipe through the dust collection groove by the suction action of the negative pressure suction device, and finally discharged from the dust collection pipe.

[0012] In some embodiments, the negative pressure suction device is a vacuum pump or a vacuum generator.

[0013] Furthermore, the bottom of the outer dust collection box is provided with a dust outlet, and the bottom of the inner dust collection box is provided with multiple dust collection pipes connected to it. The bottoms of the multiple dust collection pipes are integrated into the main dust collection pipe. The end of the main dust collection pipe away from the dust collection pipes is connected to the dust outlet, and a negative pressure suction device is connected to the dust outlet. The negative pressure suction device draws dust from the suction port into the inner dust collection box and discharges it through the dust outlet connected to the main dust collection pipe.

[0014] It should be noted that the negative pressure suction device here is the same as the negative pressure suction device connected to the dust collection pipe.

[0015] Furthermore, the suction port has a narrow and elongated structure, and the inner dust collection box is flared outwards from the suction port to its bottom, with several inwardly recessed dust-blocking structures at the bottom. The narrow and elongated suction port is positioned directly above the scraping end of the scraper blade, allowing the dust scraped off the roller by the scraper blade to be directly sucked away by the strong negative pressure generated by the negative pressure suction device, thus preventing the dust from escaping.

[0016] The flared inner dustbin structure provides sufficient space for the dust to be adsorbed under negative pressure, while also ensuring that the dust stored in the inner dustbin will not escape from the inside to the suction port, thus ensuring efficient dust extraction.

[0017] Furthermore, the scraper assembly also includes a scraper bracket, a scraper fixing assembly for fixing the scraper blade, and an angle adjustment assembly. The scraper fixing assembly is connected to the scraper bracket at both ends via a connecting shaft. The angle adjustment assembly includes an adjustment drive and a push rod located at its drive end. An inclined block is provided at each end of the scraper fixing assembly along its length on the side away from the roller. When the drive end of the adjustment drive extends, the push rod can push the inclined block to rotate around the axis of the connecting shaft.

[0018] By setting an angle adjustment component, the scraping angle of the scraping end of the scraper blade relative to the roll can be adjusted, so that the scraper blade is closer to the roll surface and the dust removal efficiency of the roll surface is guaranteed.

[0019] The adjustment drive component is a scraper cylinder, which is fixedly mounted on the scraper bracket via a cylinder bracket. When the piston rod of the scraper cylinder extends, it can drive the push rod horizontally mounted on its drive end to move forward, pushing the inclined block to rotate around the axis of the connecting shaft. The inclined block is mounted on the scraper fixing assembly, so that the scraper blade also rotates at a corresponding angle, thereby realizing the angle adjustment between the scraper blade and the roll surface.

[0020] The inclined block has an inclined surface on the side near the top rod, and the bottom of the inclined surface is inclined towards the direction near the top rod. The inclined surface can be easily pushed by the horizontally set top rod.

[0021] A roller pressing device includes a roller pressing support arranged opposite to each other, and an upper roller and a lower roller arranged parallel to each other from top to bottom on the roller pressing support, and also includes the aforementioned roller pressing scraper dust removal device.

[0022] The upper and lower rollers are connected to the roller pressing bracket at both ends along their length via bearing seats, allowing the upper and lower rollers to rotate and press material on the roller pressing bracket. The roller pressing bracket is detachably and vertically mounted on the main unit base for easy handling and installation.

[0023] Furthermore, the outer dust collection box and the two ends of the scraper assembly along the length direction are respectively fixedly connected to the roller support via mounting bracket 1, scraper fixing plate and roller support, and a dust collection support block is provided below the scraper fixing plate to support it.

[0024] The beneficial effects of this utility model are:

[0025] 1. In this utility model, the outer dust collection box, the inner dust collection box, and the scraper assembly work together. The dust collection port of the inner dust collection box corresponds to the scraping end of the scraper blade, so that the dust scraped by the scraper blade can be directly sucked away through the dust collection port under negative pressure. This prevents the dust from randomly escaping to other areas and causing pollution to the workshop environment, ensures that dust particles do not stick to the rollers, and improves the yield of electrode production.

[0026] 2. This utility model is equipped with a double-layer dust collection component. While the inner dust collection box is collecting dust, a small amount of uncollected dust can fall into the bottom of the outer dust collection box under the action of gravity and the negative pressure suction of the outer dust collection box, and be discharged through the dust collection pipe. The double dust collection can ensure that the roller scraper dust removal device has a good dust removal effect, ensure that dust particles will not stick to the roller, and improve the yield of electrode production. Attached Figure Description

[0027] Figure 1 This is an axonometric view of the overall structure of a double-layer dust collection assembly according to an embodiment of the present invention;

[0028] Figure 2 This is an axonometric view of the overall structure of the outer dust collection box according to an embodiment of the present invention;

[0029] Figure 3 This is an axonometric view of the overall structure of the dust collection box of the outer dust collection box according to an embodiment of the present invention;

[0030] Figure 4 This is an axonometric view of the overall structure of the inner dust collection box according to an embodiment of the present invention;

[0031] Figure 5 This is an axonometric view of the overall structure of the inner dust collection box according to another embodiment of the present invention;

[0032] Figure 6This is an isometric view of the overall structure of the scraper assembly according to an embodiment of the present invention;

[0033] Figure 7 This is an axonometric view of the overall structure of the scraper assembly from another perspective of an embodiment of the present invention;

[0034] Figure 8 This is an isometric view of the overall structure of a roller pressing device according to an embodiment of the present invention;

[0035] Figure 9 This is a front view of the overall structure of a roller pressing device according to an embodiment of the present invention;

[0036] In the diagram: 1. Main unit base; 2. Roller support bracket; 3. Scraper fixing plate; 4. Dust collection support block; 5. Mounting bracket one; 6. Double-layer dust collection assembly; 61. Outer dust collection box; 611. Dust collection box body; 612. Dust collection box cover; 613. Front wall; 614. Rear wall; 615. Side wall; 616. Dust collection trough; 617. Dust collection pipe; 618. Dust outlet; 619. Hinge; 620. Baffle; 626. Handle; 62. 621. Inner dust collection box; 622. Dust collection port; 623. Mounting bracket II; 624. Dust-blocking structure; 625. Dust collection main pipe; 7. Scraper assembly; 71. Scraper bracket; 72. Cylinder bracket; 73. Scraper cylinder; 74. Scraper blade; 75. Upper blade clamping plate; 76. Lower blade clamping plate; 77. Connecting shaft; 78. Top rod; 79. Inclined block; 710. Inclined surface; 8. Upper roller; 9. Lower roller. Detailed Implementation

[0037] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0038] See appendix Figures 1 to 9 As shown in this embodiment, a roller-pressed scraper dust removal device is used to collect the dust scraped by the scraper assembly. The scraper assembly 7 includes a scraper blade 74 and a double-layer dust collection assembly 6. The double-layer dust collection assembly 6 includes an outer dust collection box 61 and an inner dust collection box 62. The double dust collection structure allows most of the dust scraped by the scraper blade 74 to be directly sucked away through the dust collection port 621 of the inner dust collection box 62 under negative pressure, thereby preventing dust from randomly escaping to other areas and causing pollution to the workshop environment. A small amount of dust falls into the bottom of the outer dust collection box 61 under the action of gravity and the negative pressure suction of the outer dust collection box 61, and is finally discharged through the dust collection pipe 617, ensuring that dust particles do not stick to the roller and improving the yield of electrode production.

[0039] The scraper assembly 7 and the inner dust collection box 62 are arranged sequentially from top to bottom inside the outer dust collection box 61;

[0040] The inner dust collection box 62 includes a dust collection port 621, which corresponds to the scraping end of the scraper blade 74. This allows most of the dust scraped off by the scraper assembly 7 to be sucked away by the inner dust collection box 62 in the first instance, thereby preventing a large amount of dust from escaping and polluting the workshop environment in other areas.

[0041] The front wall 613 of the outer dust collection box 61 has a dust collection port adapted to the roller surface of the roller that needs dust removal. The scraping end of the scraper blade 74 protrudes from the dust collection port and abuts against the roller surface. By setting this dust collection port, space is provided for the scraper blade 74, allowing the scraping end of the scraper blade 74 to protrude from the outside of the outer dust collection box 61. The outer dust collection box 61 does not interfere with the scraper blade 74 scraping the coating on the roller surface. At the same time, after the coating dust scraped by the scraper blade 74 is removed by the inner dust collection box 62, a small number of large particles can fall into the outer dust collection box 61 under the action of gravity and be discharged uniformly through the dust collection pipe 617. That is, no dust particles fall and stick to the roller, which can ensure the yield of electrode production.

[0042] The outer dust collection box 61 includes a dust collection box body 611 and an openable dust collection box cover 612 located thereon. Both the dust collection box body 611 and the dust collection cover have recessed grooves on their side walls 615 for the fixed installation of the scraper assembly 7. The dust collection box cover 612 can be opened to facilitate cleaning of residual dust after vacuuming, and also facilitates cleaning, maintenance, and upkeep of the scraper assembly 7 placed inside the outer dust collection box 61. It also allows for timely replacement of the scraper blade 74 if it becomes damaged.

[0043] See appendix Figures 1 to 2 In some embodiments, the dust collection box body 611 and the dust collection box cover 612 together form a defined space for the inner dust collection box 62 and the scraper assembly 7. The front wall 613 of the outer dust collection box 61 is composed of the front wall one and the front wall two of the dust collection box body 611 and the dust collection box cover 612 when the cover is closed. Both the dust collection box body 611 and the dust collection cover are provided with separate dust collection ports. When the cover is closed, the two separate dust collection ports are combined to form the complete dust collection port of the outer dust collection box 61.

[0044] In other embodiments, the dust collection box 611 and the dust collection box cover 612 can be an integral structure, and the dust collection port on the outer dust collection box 61 can also be opened to suck up the dust after the scraper blade 74 has scraped it off.

[0045] The dust collection box cover 612 is L-shaped, and one side of the L-shape is hinged to the top side of the dust collection box body 611 via a hinge 619. The hinge 619 allows for easy opening of the dust collection box cover 612, facilitating cleaning and routine maintenance of the scraper assembly 7 placed inside the dust collection box body 611, and making operation convenient for staff.

[0046] See appendix Figure 2 Specifically, there are two hinges 619, and the hinges 619 are located on the rear wall 614 of the outer dust collection box 61, which corresponds to the position of the dust collection port 621 opened on the front wall 613. The rear wall 614 of the dust collection box cover 612 is also provided with a handle 626 for easy opening by the staff. The handle 626 is made of stainless steel.

[0047] In some embodiments, the width of the L-shaped side of the dust collection box cover 612 near the roller is smaller than the vertical distance between the top of the front wall 613 and the rear wall 614 of the dust collection box body 611. This ensures that the dust collection box cover 612 will not interfere with the scraper blade 74 scraping the coating on the roller. At the same time, it also allows the dust scraped by the scraper blade 74 that is not sucked up by the inner dust collection box 62 to fall into the outer dust collection box 61 under its own gravity, thus preventing dust from escaping or sticking to the roller and affecting subsequent electrode processing.

[0048] It should be noted that the width direction of the dust collection box cover 612 is perpendicular to the center line of the roll.

[0049] The dust collection box 611 has several rotatable baffles 620 on one side that is hinged to the dust collection box cover 612. When the dust collection box cover 612 is closed, at least a portion of the baffles 620 abuts against the side of the dust collection box cover 612 where the hinge 619 is located. By setting the baffles 620, when the cover is closed, the baffles 620 abut against the dust collection box cover 612, preventing the dust collection box cover 612 from opening and causing dust to escape during the scraping of paint by the scraper blade 74. When it is necessary to clean the inside of the double-layer dust collection assembly 6, the baffles 620 are rotated so that the baffles 620 no longer abut against the dust collection box cover 612 and do not interfere with the rotation of the dust collection box cover 612. Thus, the operator can open the dust collection box cover 612 to clean the inside of the outer dust collection box 61.

[0050] See appendix Figure 3 The outer dust collection box 61 has at least one dust collection groove 616 along its length on its bottom inner wall, and a dust collection pipe 617 connected to the dust collection groove 616 is provided along its bottom outer wall along its length. One end of the dust collection pipe 617 is sealed, and the other end is connected to a negative pressure suction device. Dust falling into the outer dust collection box 61 is drawn into the dust collection pipe 617 through the dust collection groove 616 by the suction action of the negative pressure suction device, and finally discharged from the dust collection pipe 617.

[0051] In some embodiments, the negative pressure suction device is a vacuum pump or a vacuum generator.

[0052] The outer dust collection box 61 has a dust outlet 618 at its bottom, and the inner dust collection box 62 has multiple dust collection pipes 624 connected to it at its bottom. The bottoms of these multiple dust collection pipes 624 are integrated onto a main dust collection pipe 625. The end of the main dust collection pipe 625 furthest from the dust collection pipes 624 is connected to the dust outlet 618, and a negative pressure suction device is connected to the dust outlet 618. The negative pressure suction device draws dust into the inner dust collection box 62 from the suction port 621 and discharges it through the dust outlet 618 connected to the main dust collection pipe 625.

[0053] It should be noted that the negative pressure suction device here is the same as the negative pressure suction device connected to the dust collection pipe 617.

[0054] The suction port 621 has a narrow and elongated structure. The inner dust collection box 62 is flared outwards from the suction port 621 towards its bottom, and its bottom has several inwardly recessed dust-blocking structures 623. See appendix. Figures 4 to 5 The narrow and elongated dust suction port 621 is positioned directly above the scraping end of the scraper blade 74, so that the dust scraped off the roller by the scraper blade 74 can be directly sucked away by the strong negative pressure generated by the negative pressure suction device, thus preventing the dust from escaping.

[0055] The flared inner dust collection box 62 structure provides sufficient space for the dust adsorbed by negative pressure, while also ensuring that the dust stored in the inner dust collection box 62 will not escape from its interior to the suction port 621, thus ensuring the dust suction efficiency.

[0056] The dust-blocking structure 623 is an inverted V-shaped structure, and the dust collection pipes 624 are positioned in accordance with the dust-blocking structure 623, so that the dust collection point corresponding to each dust collection pipe 624 is funnel-shaped. When the dust collection pipes 624 are suctioning, they can guide the movement of dust and effectively improve the dust suction efficiency.

[0057] The scraper assembly 7 also includes a scraper bracket 71, a scraper fixing assembly for fixing the scraper blade 74, and an angle adjustment assembly. The scraper fixing assembly is connected to the scraper bracket 71 at both ends via a connecting shaft 77. The angle adjustment assembly includes an adjustment drive and a push rod 78 located at its drive end. An inclined block 79 is provided at both ends of the scraper fixing assembly along its length away from the roller. When the drive end of the adjustment drive extends, the push rod 78 can push the inclined block 79 to rotate around the axis of the connecting shaft 77.

[0058] By setting the angle adjustment component, the scraping angle of the scraping end of the scraper blade 74 relative to the roll can be adjusted, so that the scraper blade 74 is closer to the roll surface and the dust removal efficiency of the roll surface is guaranteed.

[0059] See appendix Figures 6 to 7 In some embodiments, the adjustment drive component is a scraper cylinder 73. The scraper cylinder 73 is fixedly mounted on the scraper bracket 71 via a cylinder bracket 72. When the piston rod of the scraper cylinder 73 extends, it can drive the top rod 78, which is horizontally mounted on its drive end, to move forward and push the inclined block 79 to rotate around the axis of the connecting shaft 77. The inclined block 79 is mounted on the scraper fixing assembly, so that the scraper blade 74 also rotates at a corresponding angle, thereby realizing the angle adjustment between the scraper blade 74 and the roll surface.

[0060] The inclined block 79 has an inclined surface 710 on the side near the top rod 78, and the bottom of the inclined surface 710 is inclined towards the direction near the top rod 78. The inclined surface 710 can be easily pushed by the horizontally positioned top rod 78.

[0061] Specifically, the scraper fixing assembly includes an upper blade clamping plate 75 and a lower blade clamping plate 76. The scraper blade 74 is clamped between the upper blade clamping plate 75 and the lower blade clamping plate 76, and the scraping end of the scraper blade 74 protrudes from the scraper fixing assembly. The upper blade clamping plate 75 and the lower blade clamping plate 76 are connected by screws, which not only clamps and fixes the scraper blade 74, but also facilitates disassembly and replacement of the scraper blade 74 at any time, effectively improving the replacement efficiency of the staff.

[0062] In some embodiments, both ends of the inner dust collection box 62 along its length are connected to the scraper bracket 71 via a second mounting bracket 622. The second mounting bracket 622 fixes the position of the inner dust collection box 62 within the outer dust collection box 61.

[0063] See Figure 8 As shown, this application also provides a roller pressing device, including a roller pressing support 2 arranged opposite to each other and an upper roller 8 and a lower roller 9 arranged parallel to each other from top to bottom on the roller pressing support 2, and also includes the aforementioned roller pressing scraper dust removal device.

[0064] The upper roll 8 and the lower roll 9 are connected to the roll forming bracket 2 at both ends along their length via bearing seats, allowing the upper roll 8 and the lower roll 9 to rotate and press material on the roll forming bracket 2. The roll forming bracket 2 is detachably and vertically mounted on the main unit base 1 for easy handling and installation.

[0065] Based on the aforementioned host base 1, in some embodiments, a base skirt plate with its bottom inclined away from its center line is respectively provided on both sides of the host base 1 along its length direction, and multiple reinforcing ribs are provided on the lower end surface of the host base 1. The arrangement of the base skirt plate and the reinforcing ribs makes the bottom support of the host base 1 more stable.

[0066] It should be noted that in this embodiment, the length direction of the main unit base 1 is parallel to the length direction of the roller.

[0067] The outer dust collection box 61 and the two ends of the scraper assembly 7 along the length direction are respectively fixedly connected to the roller support 2 through the mounting bracket 5 and the scraper fixing plate 3. A dust collection support block 4 is provided below the scraper fixing plate 3 to support it.

[0068] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A roller-pressed scraper dust collector for collecting dust scraped by a scraper assembly, the scraper assembly comprising scraper blades, characterized in that: The invention includes a dual-layer dust collection assembly, which includes an outer dust collection box and an inner dust collection box. The scraper assembly and the inner dust collection box are arranged sequentially from top to bottom inside the outer dust collection box. The inner dust collection box includes a dust collection port, which corresponds to the scraping end of the scraper blade; the front wall of the outer dust collection box has a dust collection port adapted to the roller surface that needs to be dusted, and the scraping end of the scraper blade protrudes from the dust collection port and abuts against the roller surface.

2. The roller-pressed scraper dust collector according to claim 1, characterized in that: The outer dust collection box includes a dust collection box body and an openable dust collection box cover located thereon. Both the dust collection box body and the dust collection cover body have clearance grooves on their side walls for fixing and installing the scraper assembly.

3. The roller-pressed scraper dust collector according to claim 2, characterized in that: The dust collection box cover is L-shaped, and one side of the L-shape is hinged to the top side of the dust collection box body via a hinge.

4. The roller-pressed scraper dust collector according to claim 3, characterized in that: The dust collection box body is provided with several rotatable baffles on one side that is hinged to the dust collection box cover. When the dust collection box cover is closed, at least a portion of the baffles abuts against the side of the dust collection box cover where the hinge is located.

5. The roller-pressed scraper dust collector according to claim 1, characterized in that: The bottom inner wall of the outer dust collection box has at least one dust collection groove along its length, and the bottom outer wall has a dust collection pipe connected to the dust collection groove along its length. One end of the dust collection pipe is sealed, and the other end is connected to a negative pressure suction device.

6. The roller-pressed scraper dust collector according to claim 1, characterized in that: The bottom of the outer dust collection box is also provided with a dust outlet hole, and the bottom of the inner dust collection box is provided with multiple dust collection pipes connected to it. The bottom of the multiple dust collection pipes is integrated on the main dust collection pipe. The end of the main dust collection pipe away from the dust collection pipes is connected to the dust outlet hole, and a negative pressure suction device is connected to the dust outlet hole.

7. The roller-pressed scraper dust collector according to claim 6, characterized in that: The suction port has a narrow and elongated structure. The inner dust collection box is flared outward from the suction port to its bottom, and its bottom is provided with several inwardly recessed dust-blocking structures.

8. The roller-pressed scraper dust collector according to claim 1, characterized in that: The scraper assembly also includes a scraper bracket, a scraper fixing assembly for fixing the scraper blade, and an angle adjustment assembly. The scraper fixing assembly is connected to the scraper bracket at both ends via a connecting shaft. The angle adjustment assembly includes an adjustment drive and a push rod at its drive end. An inclined block is provided at each end of the scraper fixing assembly along its length away from the roller. When the drive end of the adjustment drive extends, the push rod can push the inclined block to rotate around the axis of the connecting shaft.

9. A roller pressing device, comprising a roller pressing support arranged opposite to each other and an upper roller and a lower roller arranged parallel to each other from top to bottom on the roller pressing support, characterized in that: It also includes the roller-pressed scraper dust removal device as described in any one of claims 1 to 8.

10. A roller pressing device according to claim 9, characterized in that: The outer dust collection box and the two ends of the scraper assembly along the length direction are respectively fixedly connected to the mounting bracket, the scraper fixing plate and the roller support. A dust collection support block is provided below the scraper fixing plate to support it.

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