Automatic leveling scraper structure for coiled material coating

Abstract

The utility model relates to the technical field of coiled material coating, in particular to an automatic leveling scraper structure for coiled material coating, which comprises a base, the top end of the base is rotatably connected with a portal frame, the two sides of the top end of the portal frame are fixedly connected with electric telescopic rods, and the output ends of the electric telescopic rods are fixedly connected with U-shaped seats. A scraper body is fixedly connected to the middle of the U-shaped base, a scraper head is clamped to the bottom end of the scraper body, a dovetail groove is formed in the bottom end of the scraper body, a dovetail joint is fixedly connected to the top end of the scraper head, the dovetail joint is clamped into the dovetail groove, limiting assemblies are arranged at the two ends of the dovetail groove, and an arc-shaped face is arranged at the bottom end of the scraper head. Through the arrangement of the scraper body and the scraper head, during use, the dovetail groove is formed in the bottom end of the scraper body, the dovetail tenon is fixedly connected to the top end of the scraper head, the scraper head and the scraper body are connected by clamping the dovetail tenon into the dovetail groove, when the scraper head is abraded, only the scraper head needs to be replaced, the whole scraper does not need to be replaced, and therefore cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of roll coating technology, and more specifically to an automatic leveling scraper structure for roll coating. Background Technology

[0002] Coating technology is a papermaking process that uses an adhesive substance to brush a certain gelling material onto the paper surface to improve the paper's properties.

[0003] In the production of roll coating, blade coating is a commonly used coating method. After prolonged use, the blade of a traditional blade is prone to wear and tear, requiring frequent disassembly and replacement. This not only increases the labor intensity of workers but also reduces production efficiency and increases production costs.

[0004] In addition, traditional doctor blades use right-angled or near-right-angled acute-angle designs. The sharp edges of right-angled blades can cause the contact pressure of the coating liquid or substrate to concentrate in a very small area, accelerating local wear of the blade and even causing cracking. During the coating process, right-angled blades can easily generate turbulence or eddies in the coating liquid, resulting in defects such as transverse stripes and fishtail patterns on the coating surface. They may also leave indentations on the substrate, affecting subsequent processes. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an automatic leveling doctor blade structure for roll coating, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an automatic leveling scraper structure for roll coating, comprising: a base, a gantry frame rotatably connected to the top of the base, electric telescopic rods fixedly connected to both sides of the top of the gantry frame, a U-shaped seat fixedly connected to the output end of the electric telescopic rods, a scraper body fixedly connected to the middle of the U-shaped seat, a blade head engaged at the bottom of the scraper body, a dovetail groove formed at the bottom of the scraper body, a dovetail tenon fixedly connected to the top of the blade head, the dovetail tenon engaging inside the dovetail groove, limit components provided at both ends of the dovetail groove, and an arc-shaped surface provided at the bottom of the blade head.

[0008] Furthermore, the base includes a base plate, with fixing holes at each of the four corners of the base plate. Connecting seats are fixedly connected to both sides of one end of the base plate, and a rotating shaft is fixedly connected to the middle of the connecting seats.

[0009] Furthermore, a U-shaped groove is provided in the middle of the other end of the base plate, and a threaded rod is rotatably connected to the middle of the U-shaped groove. A fixing nut is threadedly connected to the surface of the threaded rod, and a limit protrusion is fixedly connected to the bottom end of the fixing nut.

[0010] Furthermore, the gantry includes a mounting plate, with support frames fixedly connected to both sides of the bottom end of the mounting plate, and a base fixedly connected to the bottom end of the support frame, with one end of the base rotatably connected to the rotating shaft.

[0011] Furthermore, a slot is provided in the middle of the other end of the base, and the slot and the threaded rod are connected to each other. A limiting groove is provided at the top of the slot, and the limiting groove and the limiting protrusion are connected to each other.

[0012] Furthermore, threaded holes are provided on both sides of the scraper body, and limit blocks are fixedly connected to both sides of the scraper body.

[0013] Furthermore, the limiting component includes a bolt, which is threaded into the inside of a threaded hole, and a baffle is rotatably connected to the surface of the bolt, which is engaged between the limiting blocks on both sides.

[0014] Furthermore, a spring is fitted onto the surface of the bolt, with one end of the spring abutting against one end of the bolt and the other end of the spring abutting against one side of the baffle.

[0015] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0016] 1. Through the design of the scraper body and the blade head, the bottom of the scraper body is provided with a dovetail groove, and the top of the blade head is fixedly connected with a dovetail tenon. The blade head is connected to the scraper body by the dovetail tenon being engaged in the dovetail groove. When the blade head is worn, only the blade head needs to be replaced, without the need to replace the entire scraper, thereby reducing costs.

[0017] 2. By using the arc-shaped surface design, the blade edge of the blade is designed with an arc shape, which disperses the local pressure of the material on the blade edge during the coating process, reduces stress concentration, and reduces the risk of blade cracking or wear, thereby extending the service life of the doctor blade. In addition, the contact between the arc-shaped blade edge and the substrate is gradual, reducing abrupt changes in fluid dynamics, allowing the coating liquid to spread more evenly, thereby reducing the generation of streaks or scratches.

[0018] 3. By setting the limiting component, the dovetail tenon is limited inside the dovetail groove by the baffle during use, which prevents the blade head from deviating from the scraper body. When the blade head needs to be replaced, simply pull the baffle to squeeze the spring to separate it from the limiting block and rotate the baffle 90° to replace the blade head, which reduces the replacement time of the blade head and improves the replacement efficiency.

[0019] 4. With the base and gantry frame in place, the gantry frame is rotatably connected to the top of the base during use. When it is necessary to clean the coating liquid remaining on the surface of the cutter head, the gantry frame can be placed in a horizontal position so that the cutter head is facing the operator, thereby facilitating the maintenance and upkeep of the cutter head. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the gantry structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the electric telescopic pole structure of this utility model;

[0025] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A;

[0026] Figure 6 This is a schematic diagram of the scraper body structure of this utility model.

[0027] The labels in the diagram represent:

[0028] 1. Base; 101. Base plate; 102. Fixing hole; 103. U-shaped groove; 104. Threaded rod; 105. Fixing nut; 106. Limiting protrusion; 107. Connecting seat; 108. Rotating shaft; 2. Gantry frame; 201. Mounting plate; 202. Support frame; 203. Base; 204. Slot; 205. Limiting groove; 3. Electric telescopic rod; 4. U-shaped seat; 5. Scraper body; 501. Dovetail groove; 502. Threaded hole; 503. Limiting block; 6. Blade head; 601. Dovetail tenon; 602. Arc-shaped surface; 7. Limiting component; 701. Bolt; 702. Baffle; 703. Spring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] The present invention will be further described below with reference to the embodiments.

[0031] Example 1:

[0032] Reference Figure 1-6 This is the first embodiment of the present invention, which discloses an automatic leveling scraper structure for roll coating, including: a base 1, a gantry frame 2 rotatably connected to the top of the base 1, electric telescopic rods 3 fixedly connected to both sides of the top of the gantry frame 2, a U-shaped seat 4 fixedly connected to the output end of the electric telescopic rod 3, a scraper body 5 fixedly connected to the middle of the U-shaped seat 4, a blade head 6 being snapped into the bottom of the scraper body 5, a dovetail groove 501 being provided at the bottom of the scraper body 5, a dovetail tenon 601 being fixedly connected to the top of the blade head 6, the dovetail tenon 601 being snapped into the inside of the dovetail groove 501, a limit component 7 being provided at both ends of the dovetail groove 501, and an arc-shaped surface 602 being provided at the bottom of the blade head 6.

[0033] By designing the scraper body 5 and the blade head 6, the scraper body 5 has a dovetail groove 501 at its bottom end, and the blade head 6 is fixedly connected to a dovetail tenon 601 at its top. The blade head 6 is connected to the scraper body 5 by the dovetail tenon 601 engaging inside the dovetail groove 501. When the blade head 6 wears down, only the blade head 6 needs to be replaced, eliminating the need to replace the entire scraper, thus reducing costs. By designing the arc-shaped surface 602, the blade edge of the blade head 6 adopts an arc-shaped surface 602 design, which disperses the local pressure of the material on the blade edge during the coating process, reduces stress concentration, and reduces the risk of blade edge cracking or wear, thereby extending the scraper's service life. Furthermore, the contact between the arc-shaped blade edge and the substrate is gradual, reducing abrupt changes in fluid dynamics and allowing the coating liquid to spread more evenly, thereby reducing the generation of streaks or scratches.

[0034] Example 2:

[0035] Reference Figure 1-6 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0036] The base 1 includes a base plate 101, with fixing holes 102 at each of the four corners. Connecting seats 107 are fixedly connected to both sides of one end of the base plate 101, and a rotating shaft 108 is fixedly connected to the center of each connecting seat 107. A U-shaped groove 103 is formed in the center of the other end of the base plate 101, and a threaded rod 104 is rotatably connected to the center of the U-shaped groove 103. A fixing nut 105 is threaded onto the surface of the threaded rod 104, and a limit protrusion 106 is fixedly connected to the bottom end of the fixing nut 105. The gantry 2 includes a mounting plate 201. Support frames 202 are fixedly connected to both sides of the bottom end of the mounting plate 201. A base 203 is fixedly connected to the bottom end of the support frame 202. One end of the base 203 is rotatably connected to the rotating shaft 108. A slot 204 is provided in the middle of the other end of the base 203. The slot 204 is connected to the threaded rod 104. A limiting groove 205 is provided at the top of the slot 204. The limiting groove 205 is connected to the limiting protrusion 106.

[0037] With the base 1 and gantry 2 in use, the gantry 2 is rotatably connected to the top of the base 1. When it is necessary to clean the coating liquid remaining on the surface of the cutter head 6, the gantry 2 can be placed in a horizontal position so that the cutter head 6 is facing the operator, thereby facilitating the maintenance and upkeep of the cutter head 6.

[0038] Both sides of the scraper body 5 are provided with threaded holes 502. Both sides of the scraper body 5 are fixedly connected with limit blocks 503. The limit component 7 includes a bolt 701. The bolt 701 is threadedly connected to the inside of the threaded hole 502. A baffle 702 is rotatably connected to the surface of the bolt 701. The baffle 702 is engaged between the two limit blocks 503. A spring 703 is sleeved on the surface of the bolt 701. One end of the spring 703 abuts against one end of the bolt 701, and the other end of the spring 703 abuts against one side of the baffle 702.

[0039] By setting the limiting component 7, the dovetail tenon 601 is limited inside the dovetail groove 501 by the baffle 702 during use, preventing the blade head 6 from shifting from the scraper body 5. When the blade head 6 needs to be replaced, simply pull the baffle 702 to squeeze the spring 703 to separate it from the limiting block 503 and rotate the baffle 702 90° to replace the blade head 6, reducing the replacement time of the blade head 6 and improving the replacement efficiency.

[0040] The remaining structure is the same as that in Example 1.

[0041] The workflow of this utility model is as follows:

[0042] First, the doctor blade structure is fixedly connected to the roll coating device through the fixing hole 102. Then, the electric telescopic rod 3 is activated to drive the doctor blade body 5 to move down so that the arc-shaped surface 602 of the blade head 6 contacts the material surface. With the arc-shaped surface 602, the blade edge of the blade head 6 adopts the design of arc-shaped surface 602 during use, which disperses the local pressure of the material on the blade edge during the coating process, reduces stress concentration, reduces the risk of blade edge cracking or wear, thereby extending the service life of the doctor blade. Moreover, the contact between the arc-shaped blade edge and the substrate is gradual, reducing the sudden change in fluid dynamics, making the coating liquid spread more evenly, thereby reducing the generation of streaks or scratches.

[0043] Secondly, when the blade head 6 is worn and needs to be replaced, simply pull the baffle 702 to compress the spring 703 to separate it from the limiting block 503 and rotate the baffle 702 90° to replace the blade head 6. This reduces the replacement time of the blade head 6 and improves the replacement efficiency. Through the design of the scraper body 5 and the blade head 6, the bottom end of the scraper body 5 is provided with a dovetail groove 501, and the top end of the blade head 6 is fixedly connected with a dovetail tenon 601. The blade head 6 is connected to the scraper body 5 by the dovetail tenon 601 being engaged in the dovetail groove 501. When the blade head 6 is worn, only the blade head 6 needs to be replaced, without replacing the entire scraper, thereby reducing costs. Through the design of the limiting component 7, the baffle 702 limits the dovetail tenon 601 in the dovetail groove 501 during use, preventing the blade head 6 from shifting away from the scraper body 5.

[0044] Finally, when it is necessary to clean the coating liquid remaining on the surface of the cutter head 6, rotate the fixing nut 105 to separate the limiting protrusion 106 from the inside of the limiting groove 205, then rotate the threaded rod 104 to separate it from the inside of the slot 204, and then rotate the gantry 2 to a horizontal position. Through the setting of the base 1 and the gantry 2, the gantry 2 is rotatably connected to the top of the base 1 during use. When it is necessary to clean the coating liquid remaining on the surface of the cutter head 6, the gantry 2 can be placed in a horizontal position so that the cutter head 6 is facing the operator, thereby facilitating the maintenance and upkeep of the cutter head 6.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic leveling doctor blade structure for roll coating, characterized in that, include: A base (1) is rotatably connected to a gantry frame (2) at the top of the base (1). Electric telescopic rods (3) are fixedly connected to both sides of the top of the gantry frame (2). A U-shaped seat (4) is fixedly connected to the output end of the electric telescopic rod (3). A scraper body (5) is fixedly connected to the middle of the U-shaped seat (4). A blade head (6) is snapped into the bottom end of the scraper body (5). A dovetail groove (501) is opened at the bottom end of the scraper body (5). A dovetail tenon (601) is fixedly connected to the top of the blade head (6). The dovetail tenon (601) is snapped into the inside of the dovetail groove (501). Limiting components (7) are provided at both ends of the dovetail groove (501). An arc-shaped surface (602) is provided at the bottom end of the blade head (6).

2. The automatic flow and level blade structure for web coating according to claim 1, wherein, The base (1) includes a base plate (101), and fixing holes (102) are provided at the four corners of the base plate (101). Connecting seats (107) are fixedly connected to both sides of one end of the base plate (101), and a rotating shaft (108) is fixedly connected to the middle of the connecting seat (107).

3. The automatic flow and level blade structure for web coating according to claim 2, wherein, A U-shaped groove (103) is provided in the middle of the other end of the base plate (101). A threaded rod (104) is rotatably connected to the middle of the U-shaped groove (103). A fixing nut (105) is threadedly connected to the surface of the threaded rod (104). A limit protrusion (106) is fixedly connected to the bottom end of the fixing nut (105).

4. The automatic flow and level blade structure for web coating according to claim 2, wherein, The gantry (2) includes a mounting plate (201), and support frames (202) are fixedly connected to both sides of the bottom end of the mounting plate (201). A base (203) is fixedly connected to the bottom end of the support frame (202), and one end of the base (203) is rotatably connected to the rotating shaft (108).

5. The automatic flow and level blade structure for web coating according to claim 4, wherein, A slot (204) is provided in the middle of the other end of the base (203). The slot (204) and the threaded rod (104) are connected to each other. A limiting groove (205) is provided at the top of the slot (204). The limiting groove (205) and the limiting protrusion (106) are connected to each other.

6. The automatic flow and level blade structure for web coating according to claim 1, wherein, The scraper body (5) has threaded holes (502) on both sides, and limit blocks (503) are fixedly connected to both sides of the scraper body (5).

7. The automatic flow and level blade structure for web coating according to claim 6, wherein The limiting component (7) includes a bolt (701), which is threaded into the inside of a threaded hole (502). A baffle (702) is rotatably connected to the surface of the bolt (701), and the baffle (702) is engaged between the two limiting blocks (503).

8. The automatic flow and level blade structure for web coating according to claim 7, wherein, A spring (703) is fitted onto the surface of the bolt (701). One end of the spring (703) abuts against one end of the bolt (701), and the other end of the spring (703) abuts against one side of the baffle (702).

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