Bio-based polyurethane synthetic leather preparation equipment

Abstract

This utility model relates to the technical field of synthetic leather preparation equipment, specifically to bio-based polyurethane synthetic leather preparation equipment. It includes a coating station, a conveying mechanism mounted on the coating station, a material dispensing and distributing mechanism, and a scraping mechanism. The material dispensing and distributing mechanism includes two side frames welded to the conveying mechanism. A guide shell connected to the discharge port is fixedly connected to the side of the material box. One end of the guide shell extends to the top of the conveying mechanism, and a discharge port is provided on the guide shell. A scraper is fixedly connected to the bottom of the guide shell. A material bucket is placed on the coating station. The polyurethane inside the bucket is transferred to the inside of the feeding hopper, facilitating timely application of the polyurethane coating to multiple areas on the release paper. During dispensing, the polyurethane coating on the release paper is automatically stirred and dispersed, eliminating the need for material sticks, reducing labor intensity, and ensuring more uniform coating, thus avoiding material shortages that could affect the production quality of the synthetic leather.

Description

Technical Field

[0001] This utility model relates to a synthetic leather preparation device, specifically a bio-based polyurethane synthetic leather preparation device, and belongs to the technical field of synthetic leather preparation device. Background Technology

[0002] Bio-based polyurethane synthetic leather is an environmentally friendly synthetic leather material made from renewable biomass resources. The equipment for preparing bio-based polyurethane synthetic leather includes raw material mixing equipment, polyurethane coating equipment, drying and curing equipment, laminating equipment, and release paper peeling equipment.

[0003] However, the current preparation of bio-based polyurethane synthetic leather requires coating evenly stirred polyurethane onto release paper. During coating, the release paper is conveyed to a coating table, and then the polyurethane is poured onto it. The coating thickness is adjusted using a scraper. When pouring the polyurethane onto the release paper, a container is placed on the coating table, and a water-scooping container transfers the polyurethane coating from the container to the release paper. Then, a material rod is manually used to disperse the polyurethane coating evenly. The coating is achieved through the conveying of the release paper and the scraper. Transferring the polyurethane coating from the container using a water-scooping container is not only slow, causing the polyurethane to flow and drip onto the release paper, but also labor-intensive, slow, and uneven in dispersion, easily leading to localized polyurethane coating accumulation or insufficient material, affecting the overall coating of the polyurethane onto the release paper. Utility Model Content

[0004] The purpose of this invention is to provide a bio-based polyurethane synthetic leather preparation device to solve the above problems. It only requires transferring the polyurethane inside the material bucket to the inside of the feeding hopper, which facilitates timely pouring of polyurethane coating onto multiple areas of the release paper. During feeding, the polyurethane coating on the release paper is automatically stirred and dispersed, eliminating the need for material sticks to disperse the material. This reduces the workload of workers and makes the coating more uniform, avoiding material shortages that could affect the production quality of synthetic leather.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: a bio-based polyurethane synthetic leather preparation equipment, including a coating station plate and a conveying mechanism installed on the coating station plate. The conveying mechanism is equipped with a material dispensing and scattering mechanism and a scraping mechanism. The material dispensing and scattering mechanism includes two side frames. The conveying mechanism has two side frames welded opposite to each other, and a sliding rod is welded between the two side frames. A lead screw is rotatably connected between the two side frames. A material box that is slidably connected to the sliding rod is threaded onto the lead screw. A motor is installed on the side frame. The output end of the motor is connected to the lead screw through a coupling. A discharge port is opened on the side of the material box. A guide shell communicating with the discharge port is fixedly connected to the side of the material box. One end of the guide shell extends to the top of the conveying mechanism. A discharge port is provided on the guide shell. A scraper is fixedly connected to the bottom of the guide shell. A material bucket is placed on the coating station plate.

[0006] Specifically, the bottom of the material box is inclined, and the top of the flow guide shell located on the side of the material box is open, and the flow guide shell is inclined.

[0007] Specifically, the material dispensing and dispersing mechanism also includes a leak-proof plate. A leak-proof plate with a √-shaped cross-section is obliquely welded to the material box on the side opposite to the flow guide shell. The leak-proof plate is located at the top of the material bucket.

[0008] Specifically, the discharge ports are equidistantly located at the bottom and both sides of the guide shell, and the guide shell at the discharge ports is horizontally positioned.

[0009] Specifically, there are two scrapers welded to each other at the bottom of the flow guide shell, and the two scrapers have a comb-shaped structure with the bottom of the scrapers inclined.

[0010] Specifically, the conveying mechanism includes two supports. Two supports are installed on both sides of the coating station plate by screws. The two side frames are respectively welded to the side walls of the two supports. Guide roller one and guide roller two are rotatably connected to the two supports in parallel. Release paper is rolled on guide roller one and guide roller two.

[0011] Specifically, the position of guide roller one is lower than the position of guide roller two, and the diameter of guide roller two is smaller than the diameter of guide roller one.

[0012] Specifically, the scraping mechanism includes two slide rails, which are welded to each other on the bracket. A slide bar is slidably connected between the two slide rails. A scraper located above the release paper is installed on the slide bar by screws. A screw rod that is rotatably connected to the slide bar is threaded onto each of the two slide rails.

[0013] Specifically, the scraper is equipped with a material-stopping mechanism, which includes a sliding frame. The sliding frame, with a U-shaped cross-section, is fixedly connected to the side wall of the scraper. Two top plates are slidably connected to the sliding frame, and a bidirectional lead screw is rotatably connected to the sliding frame. The bidirectional lead screw is threadedly connected to the two top plates. A second screw is threadedly connected to the bottom of the top plate, and a bottom plate is rotatably connected to the bottom of the second screw. A baffle that contacts the release paper is fixedly connected to the bottom of the bottom plate, and a limiting rod that is slidably connected to the top plate is welded to the bottom plate.

[0014] Specifically, the two supports are equipped with protective mechanisms, the protective mechanisms including placement plates, the placement plates being welded between the two supports, and material receiving hoppers being placed on the placement plates.

[0015] The beneficial effects of this utility model are as follows: The starting motor drives the lead screw to move the material box left and right on the slide rod. During loading, workers use a water scoop to transfer the polyurethane coating from the material bucket to the inside of the material box, which can be added directly. Further, the polyurethane coating flows from the inside of the material box to the discharge port, then from the discharge port to the inside of the guide shell, and finally falls onto the conveying mechanism from the bottom and sides of the guide shell. Because the motor drives the lead screw to rotate clockwise or counterclockwise, the polyurethane coating inside the material box falls from the discharge port to different positions on the release paper. Furthermore, because a scraper is welded to the bottom of the guide shell, the polyurethane coating on the conveying mechanism is evenly distributed during loading, eliminating the need for manual distribution using a material bar. This combination of loading and scraping prevents polyurethane coating accumulation and gaps, ensuring comprehensive coating, improving the production quality of synthetic leather, and reducing the workload of employees. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the material box and the flow guide shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the material box and the leak-proof plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure of the bidirectional lead screw and top plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure of the top plate, bottom plate and baffle of this utility model;

[0021] Figure 6 This is a schematic diagram of the connection structure of the top plate, screw rod 2, and bottom plate of this utility model.

[0022] In the diagram: 1. Coating station plate; 2. Material feeding and distributing mechanism; 201. Side frame; 202. Motor; 203. Slide rod; 204. Lead screw; 205. Material box; 206. Material bucket; 207. Discharge port; 208. Flow guide shell; 209. Leak-proof plate; 210. Scraper; 211. Discharge port; 3. Conveying mechanism; 301. Support; 302. Guide roller one; 303. Guide roller two; 304. Release paper; 4. Scraping mechanism; 401. Slide rail; 402. Screw one; 403. Slide bar; 404. Scraper; 5. Material blocking mechanism; 501. Sliding frame; 502. Bidirectional lead screw; 503. Base plate; 504. Baffle; 505. Top plate; 506. Screw two; 507. Limiting rod; 6. Protective mechanism; 601. Placement plate; 602. Receiving hopper. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 As shown, the bio-based polyurethane synthetic leather preparation equipment includes a coating station plate 1 and a conveying mechanism 3 installed on the coating station plate 1. The conveying mechanism 3 is equipped with a material dispensing and distributing mechanism 2 and a scraping mechanism 4. The material dispensing and distributing mechanism 2 includes two side frames 201. Two side frames 201 are welded opposite to each other on the conveying mechanism 3. A sliding rod 203 is welded between the two side frames 201. A lead screw 204 is rotatably connected between the two side frames 201. A material box 20, which is slidably connected to the slide rod 203, is threaded onto the lead screw 204. 5. A motor 202 is installed on the side frame 201. The output end of the motor 202 is connected to the lead screw 204 through a coupling. A discharge port 207 is provided on the side of the material box 205. A guide shell 208 communicating with the discharge port 207 is fixedly connected to the side of the material box 205. One end of the guide shell 208 extends to the top of the conveying mechanism 3. A discharge port 211 is provided on the guide shell 208. A scraper 210 is fixedly connected to the bottom of the guide shell 208. A material bucket 206 is placed on the coating station plate 1.

[0025] As a technical optimization of this utility model, the inner bottom of the material box 205 is inclined, and the top of the flow guide shell 208 located on the side of the material box 205 is open. The flow guide shell 208 is inclined to facilitate the flow of polyurethane coating.

[0026] As a technical optimization of this utility model, the material dispensing and dispersing mechanism 2 further includes a leak-proof plate 209. A leak-proof plate 209 with a √-shaped cross section is obliquely welded to the material box 205 on the side away from the guide shell 208. The discharge port 211 is equidistantly opened at the bottom and both sides of the guide shell 208. The guide shell 208 located at the discharge port 211 is horizontally set. The leak-proof plate 209 is located at the top of the material bucket 206, which facilitates the uniform falling of polyurethane coating onto the release paper 304.

[0027] As a technical optimization of this utility model, two scrapers 210 are welded to each other at the bottom of the flow guide shell 208, and the two scrapers 210 have a comb-shaped structure. The bottom of the scrapers 210 is inclined to achieve uniform dispersion of the coating on the release paper 304.

[0028] As a technical optimization of this utility model, the conveying mechanism 3 includes two supports 301. Two supports 301 are installed on both sides of the coating station plate 1 by screws. The two side frames 201 are respectively welded to the side walls of the two supports 301. A guide roller 1 302 and a guide roller 2 303 are rotatably connected to the two supports 301 in parallel. Release paper 304 is rolled on the guide roller 1 302 and the guide roller 2 303. The position of the guide roller 1 302 is lower than the position of the guide roller 2 303. The diameter of the guide roller 2 303 is smaller than the diameter of the guide roller 1 302, so as to guide the release paper 304 during operation, exposing the inclined part to accommodate the polyurethane coating.

[0029] As a technical optimization of this utility model, the scraping mechanism 4 includes two slide rails 401. The bracket 301 has two slide rails 401 welded to each other. A slide bar 403 is slidably connected between the two slide rails 401. A scraper 404 located above the release paper 304 is installed on the slide bar 403 by screws. A screw 402 that is rotatably connected to the slide bar 403 is threaded onto both slide rails 401. When the release paper 304 is conveyed, excess coating on its surface is scraped off.

[0030] As a technical optimization of this utility model, a material blocking mechanism 5 is installed on the scraper 404. The material blocking mechanism 5 includes a sliding frame 501. The sliding frame 501 with a U-shaped cross-section is fixedly connected to the side wall of the scraper 404. Two top plates 505 are slidably connected to the sliding frame 501. A bidirectional lead screw 502 is rotatably connected to the sliding frame 501. The bidirectional lead screw 502 is threadedly connected to the two top plates 505. A second screw 506 is threadedly connected to the bottom of the top plate 505. A bottom plate 503 is rotatably connected to the bottom of the second screw 506. A baffle 504 that abuts against the release paper 304 is fixedly connected to the bottom of the bottom plate 503. A limiting rod 507 that is slidably connected to the top plate 505 is welded to the bottom plate 503, thereby limiting the coating on the surface of the release paper 304 to the left and right to prevent overflow of the coating area.

[0031] As a technical optimization of this utility model, a protective mechanism 6 is provided on the two supports 301. The protective mechanism 6 includes a placement plate 601. The placement plate 601 is welded between the two supports 301. A receiving hopper 602 is placed on the placement plate 601 to catch the paint falling from the side of the release paper 304 when applying polyurethane coating, thereby reducing waste.

[0032] In use, the release paper 304 is first conveyed by a conveying device, passing through guide roller 302 and guide roller 303 to guide it. The release paper 304 located at the bottom of the guide shell 208 is tilted to facilitate the downward flow of the polyurethane coating. Then, the motor 202 is started, causing the lead screw 204 to move the material box 205 left and right on the slide rod 203. During loading, workers use a water scoop to transfer the polyurethane coating inside the material bucket 206. The polyurethane coating is directly added into the material box 205. It then flows from the inside of the material box 205 to the discharge port 207, from the discharge port 207 to the inside of the guide shell 208, and finally falls from the bottom and sides of the guide shell 208 through the discharge ports 211 onto the inclined release paper 304 between guide roller 1 302 and guide roller 2 303. Because the motor 202 drives the lead screw 204 to rotate clockwise or counterclockwise, the polyurethane coating inside the material box 205 falls from the discharge port 211. The polyurethane coating on the release paper 304 is evenly distributed at different positions on the release paper 304 during the feeding process, thanks to the scraper 210 welded to the bottom of the guide shell 208. This eliminates the need for manual distribution via a material bar. The combination of feeding and scraping prevents polyurethane coating accumulation and gaps, ensuring comprehensive coating, improving the production quality of synthetic leather, and reducing the workload of employees. Finally, as the release paper 304 is conveyed upwards, the coating passing under the scraper 404 is blocked and remains at the bottom of the release paper 304. The gap between the blade 404 and the coating thickness is the coating thickness. The thickness can be adjusted by rotating screw 402. The distance between the two baffles 504 can be adjusted according to the coating width. When adjusting, rotating the bidirectional screw 502 can move the two baffles 504 relative to each other or away from each other at the same time, so as to adapt to the coating of release paper 304 of different widths. Rotating screw 506 can adjust the distance between the baffles 504 and the release paper 304, which is beneficial to protect the release paper 304 of different thicknesses and prevent the coating from spreading to both sides.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bio-based polyurethane synthetic leather preparation device, comprising a coating station plate (1) and a conveying mechanism (3) installed on the coating station plate (1), characterized in that: The conveying mechanism (3) is equipped with a material discharging mechanism (2) and a scraping mechanism (4). The material discharging mechanism (2) includes two side frames (201). The conveying mechanism (3) has two side frames (201) welded to each other. A slide rod (203) is welded between the two side frames (201). A lead screw (204) is rotatably connected between the two side frames (201). A material box (205) that is slidably connected to the slide rod (203) is threaded onto the lead screw (204). A motor (202) is installed on the side frame (201). The output end of the motor (202) is connected to the lead screw (204) via a coupling. The side of the material box (205) is provided with a discharge port (207). The side of the material box (205) is fixedly connected with a guide shell (208) communicating with the discharge port (207). One end of the guide shell (208) extends to the top of the conveying mechanism (3). The guide shell (208) is provided with a discharge port (211). The bottom of the guide shell (208) is fixedly connected with a scraper (210). A material bucket (206) is placed on the coating station plate (1).

2. The bio-based polyurethane synthetic leather preparation equipment according to claim 1, characterized in that: The bottom of the material box (205) is inclined, and the top of the flow guide shell (208) located on the side of the material box (205) is open, and the flow guide shell (208) is inclined.

3. The bio-based polyurethane synthetic leather preparation equipment according to claim 1, characterized in that: The material dispensing and dispersing mechanism (2) also includes a leak-proof plate (209). A leak-proof plate (209) with a √-shaped cross section is inclinedly welded on the material box (205) on the side away from the flow guide shell (208). The leak-proof plate (209) is located on the top of the material bucket (206).

4. The bio-based polyurethane synthetic leather preparation equipment according to claim 1, characterized in that: The discharge port (211) is equidistantly provided at the bottom and both sides of the guide shell (208), and the guide shell (208) located at the discharge port (211) is horizontally arranged.

5. The bio-based polyurethane synthetic leather preparation equipment according to claim 4, characterized in that: The bottom of the flow guide shell (208) has two scrapers (210) welded to each other, and the two scrapers (210) have a comb-shaped structure, with the bottom of the scrapers (210) set at an angle.

6. The bio-based polyurethane synthetic leather preparation equipment according to claim 1, characterized in that: The conveying mechanism (3) includes two supports (301). Two supports (301) are installed on both sides of the coating station plate (1) by screws. Two side frames (201) are welded to the side walls of the two supports (301) respectively. Guide roller one (302) and guide roller two (303) are rotatably connected to the two supports (301) in parallel. Release paper (304) is rolled on the guide roller one (302) and guide roller two (303).

7. The bio-based polyurethane synthetic leather preparation equipment according to claim 6, characterized in that: The position of the first guide roller (302) is lower than that of the second guide roller (303), and the diameter of the second guide roller (303) is smaller than that of the first guide roller (302).

8. The bio-based polyurethane synthetic leather preparation equipment according to claim 6, characterized in that: The scraping mechanism (4) includes two slide rails (401). The bracket (301) has two slide rails (401) welded to each other. A slide bar (403) is slidably connected between the two slide rails (401). A scraper (404) located above the release paper (304) is installed on the slide bar (403) by screws. A screw rod (402) that is rotatably connected to the slide bar (403) is threaded onto both slide rails (401).

9. The bio-based polyurethane synthetic leather preparation equipment according to claim 8, characterized in that: A material blocking mechanism (5) is installed on the scraper (404). The material blocking mechanism (5) includes a sliding frame (501). The side wall of the scraper (404) is fixedly connected to the sliding frame (501) with a U-shaped cross-section. Two top plates (505) are slidably connected to the sliding frame (501). A two-way screw (502) is rotatably connected to the sliding frame (501). The two-way screw (502) is threadedly connected to the two top plates (505). A second screw (506) is threadedly connected to the bottom of the top plate (505). A bottom plate (503) is rotatably connected to the bottom of the second screw (506). A baffle (504) that abuts against the release paper (304) is fixedly connected to the bottom of the bottom plate (503). A limiting rod (507) that is slidably connected to the top plate (505) is welded to the bottom plate (503).

10. The bio-based polyurethane synthetic leather preparation equipment according to claim 6, characterized in that: The two supports (301) are provided with a protective mechanism (6), the protective mechanism (6) includes a placement plate (601), the placement plate (601) is welded between the two supports (301), and a receiving hopper (602) is placed on the placement plate (601).

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