Surface treatment device for water-based polyurethane synthetic leather

Abstract

The utility model relates to the surface treatment device technical field of synthetic leather, specifically is the surface treatment device of waterborne polyurethane synthetic leather, including support seat, fixedly connected with loading box on support seat, rotationally connected with stirring rod on loading box, rotationally connected with coating roller on loading box, fixedly connected with rotating rod on stirring rod, slidingly connected with sliding block on rotating rod, rotationally connected with connecting rod on sliding block, fixedly connected with liquid storage bucket on support seat, fixedly connected with connecting pipe on liquid storage bucket, slidingly connected with sliding cylinder on connecting pipe, fixedly connected with piston on sliding cylinder, install second check valve on sliding cylinder, install first check valve in connecting pipe, piston slidingly connected in connecting pipe, fixedly connected with connecting shaft on sliding cylinder, rotatably connected between connecting shaft and connecting rod, solve the technical problem that material supplementing is inconvenient and coating is layered in existing roll coating equipment, thereby improve synthetic leather production efficiency and product quality, reduce enterprise production cost.

Description

Technical Field

[0001] This utility model relates to a surface treatment device for synthetic leather, specifically a surface treatment device for water-based polyurethane synthetic leather, and belongs to the technical field of surface treatment devices for synthetic leather. Background Technology

[0002] In the industrial production process of waterborne polyurethane synthetic leather, roller coating has become the mainstream technology for coating waterborne polyurethane liquid onto the leather surface due to its efficient and uniform coating characteristics. Traditional roller coating equipment mainly consists of a rotating coating roller and a loading box. One side of the coating roller is immersed in the waterborne polyurethane liquid in the loading box, while the other side is in close contact with the leather surface. The continuous and uniform transfer of coating is achieved by the rotation of the roller, thereby quickly completing the coating operation of large-area leather surfaces. It is especially suitable for large-scale production scenarios such as shoe upper leather and bag leather.

[0003] However, existing roller coating equipment faces numerous technical challenges in practical applications. Firstly, the loading bins have limited capacity, resulting in a limited amount of water-based polyurethane liquid that can be loaded at a time. In continuous production, operators must frequently stop the machine to replenish the coating. This intermittent operation significantly reduces production efficiency, extends product delivery cycles, and increases manual intervention costs. Secondly, the water-based polyurethane liquid stored statically in the loading bins lacks a mixing mechanism, making it prone to component separation and uneven coating concentration. When using this separated coating for roller coating, issues such as inconsistent surface gloss and reduced adhesion arise, severely impacting the physical properties and appearance quality of synthetic leather. Utility Model Content

[0004] The purpose of this invention is to provide a surface treatment device for water-based polyurethane synthetic leather to solve the above-mentioned problems, thereby solving the technical problems of inconvenient material replenishment and coating layering in existing roller coating equipment, thus improving the production efficiency and product quality of synthetic leather and reducing the production cost of enterprises.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: a surface treatment device for water-based polyurethane synthetic leather, comprising a support base, a material box fixedly connected to the support base, a stirring rod rotatably connected to the material box, a coating roller rotatably connected to the material box, one synchronous pulley fixedly connected to the stirring rod, another synchronous pulley fixedly connected to the coating roller, the two synchronous pulleys wound with the same synchronous belt, an extraction structure provided on the stirring rod, the extraction structure including a rotating rod and a slider, a rotating rod fixedly connected to the stirring rod, a slider slidably connected to the rotating rod, a connecting rod rotatably connected to the slider, a liquid storage tank fixedly connected to the support base, a connecting pipe fixedly connected to the liquid storage tank, a slide cylinder slidably connected to the connecting pipe, a piston fixedly connected to the slide cylinder, a second one-way valve installed on the slide cylinder, a first one-way valve installed inside the connecting pipe, the piston slidably connected to the connecting pipe, and a connecting shaft fixedly connected to the slide cylinder, the connecting shaft being rotatably connected to the connecting rod.

[0006] Preferably, the top end of the connecting pipe is offset from directly below the stirring rod, and the stirring rod is located in the middle of the filling box.

[0007] Preferably, a lead screw is rotatably connected to the rotating rod, and the lead screw is threadedly connected to the slider.

[0008] Preferably, a knob is fixedly connected to one end of the lead screw, and the outer side of the knob is provided with multiple grooves.

[0009] Preferably, a motor is mounted on the support base, and the output shaft of the motor is fixedly connected to one end of the paint roller.

[0010] Preferably, the top of the liquid storage tank is threaded with a sealing cap, and the outer side of the sealing cap is provided with multiple raised strips.

[0011] Preferably, multiple guide rollers are rotatably connected to the support base, and multiple fans are installed on the support base.

[0012] Preferably, a connecting frame is fixedly connected to the support base, and multiple infrared heating tubes are installed inside the connecting frame.

[0013] The beneficial effects of this invention are as follows: During use, the coating roller rotates to apply a coating to the leather. Simultaneously, the rotation of the coating roller drives one of the synchronous pulleys, which in turn drives another synchronous pulley via a synchronous belt. This second synchronous pulley, in turn, drives the stirring rod. The stirring rod's rotation agitates the water-based polyurethane liquid inside the filling box, preventing stratification and ensuring that the physical properties and appearance quality of the synthetic leather meet requirements. Furthermore, the rotation of the stirring rod drives a rotating rod, which in turn moves a slider. This slider movement, via a connecting rod, drives... The connecting shaft moves, driving the slide cylinder to move. Based on the crank-slider principle, the slide cylinder reciprocates up and down as the rotating rod rotates in one direction. When the slide cylinder moves upward, the water-based polyurethane liquid inside the storage tank enters the connecting pipe and the slide cylinder through the first one-way valve. When the slide cylinder moves downward, the water-based polyurethane liquid inside the slide cylinder is squeezed and discharged from the second one-way valve into the filling box. Therefore, the water-based polyurethane liquid consumed can be automatically replenished while coating, avoiding the need for operators to frequently stop the machine to replenish the coating in the filling box. This not only significantly improves production efficiency and extends the product delivery cycle, but also reduces manual intervention costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.

[0016] Figure 3 This is a schematic diagram of the connection structure between the support base and the motor of this utility model;

[0017] Figure 4 for Figure 3 The diagram shown is an enlarged view of the structure of section B.

[0018] Figure 5 This is a schematic diagram of the connection structure between the connecting frame and the infrared heating tube of this utility model.

[0019] In the diagram: 1. Support base; 2. Filling box; 3. Stirring rod; 4. Extraction structure; 401. Rotating rod; 402. Slider; 403. Lead screw; 404. Knob; 405. Connecting rod; 406. Connecting shaft; 407. Slide cylinder; 408. Piston; 409. First one-way valve; 410. Second one-way valve; 411. Connecting pipe; 5. Storage tank; 6. Sealing cap; 7. Synchronous pulley; 8. Synchronous belt; 9. Coating roller; 10. Motor; 11. Guide roller; 12. Connecting frame; 13. Infrared heating tube; 14. Fan. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5 As shown, the surface treatment device for water-based polyurethane synthetic leather includes a support base 1, a material box 2 fixedly connected to the support base 1, a stirring rod 3 rotatably connected to the material box 2, a coating roller 9 rotatably connected to the material box 2, one synchronous pulley 7 fixedly connected to the stirring rod 3, and another synchronous pulley 7 fixedly connected to the coating roller 9. The two synchronous pulleys 7 are wound with the same synchronous belt 8. The stirring rod 3 is provided with a extraction structure 4, which includes a rotating rod 401 and a slider 402. The rotating rod 401 is fixedly connected to the stirring rod 3, and a slider 402 is slidably connected to the rotating rod 401. A slider 402 is rotatably connected to a connecting rod 405. A liquid storage tank 5 is fixedly connected to the support base 1. A connecting pipe 411 is fixedly connected to the liquid storage tank 5. A sliding cylinder 407 is slidably connected to the connecting pipe 411. A piston 408 is fixedly connected to the sliding cylinder 407. A second one-way valve 410 is installed on the sliding cylinder 407. A first one-way valve 409 is installed inside the connecting pipe 411. The piston 408 is slidably connected to the connecting pipe 411. A connecting shaft 406 is fixedly connected to the sliding cylinder 407. The connecting shaft 406 is rotatably connected to the connecting rod 405.

[0022] As a technical optimization of this utility model, the top end of the connecting pipe 411 is offset from directly below the stirring rod 3, thus avoiding collision between the slide cylinder 407 and the stirring rod 3 during reciprocating movement. The stirring rod 3 is located in the middle of the filling box 2, so the water-based polyurethane liquid inside the filling box 2 can be stirred by the stirring rod 3.

[0023] As a technical optimization of this utility model, a lead screw 403 is rotatably connected to the rotating rod 401, so the position of the slider 402 can be precisely adjusted by rotating the lead screw 403. The lead screw 403 and the slider 402 are threadedly connected.

[0024] As a technical optimization of this utility model, a knob 404 is fixedly connected to one end of the lead screw 403, so the lead screw 403 can be easily rotated by holding the knob 404. The outer side of the knob 404 is provided with multiple grooves, so as to avoid the phenomenon of hand slippage when rotating the lead screw 403.

[0025] As a technical optimization of this utility model, a motor 10 is installed on the support base 1, and the output shaft of the motor 10 is fixedly connected to one end of the paint roller 9, so the rotation of the paint roller 9 can be controlled by the motor 10.

[0026] As a technical optimization of this utility model, the top of the liquid storage tank 5 is threaded with a sealing cap 6, so the liquid storage tank 5 can be sealed by the sealing cap 6. At the same time, opening the sealing cap 6 can also add a large amount of water-based polyurethane liquid into the interior of the liquid storage tank 5 at one time. The outer side of the sealing cap 6 is provided with multiple protrusions, so as to prevent the hand from slipping when rotating the sealing cap 6.

[0027] As a technical optimization of this utility model, a plurality of guide rollers 11 are rotatably connected to the support base 1, which can guide the movement of the leather. A plurality of fans 14 are installed on the support base 1, which can cool the dried water-based polyurethane synthetic leather.

[0028] As a technical optimization of this utility model, a connecting frame 12 is fixedly connected to the support base 1. The infrared heating tube 13 can be installed through the connecting frame 12. Multiple infrared heating tubes 13 are installed inside the connecting frame 12. The multiple infrared heating tubes 13 can dry the water-based polyurethane leather after coating.

[0029] In use, this invention involves starting the motor 10, which rotates the output shaft, driving the coating roller 9 to rotate. The rotation of the coating roller 9 applies a coating to the leather. Simultaneously, the rotation of the coating roller 9 drives one of the synchronous pulleys 7, which in turn drives another synchronous pulley 7 via a synchronous belt 8. This second synchronous pulley 7 then drives the stirring rod 3, which in turn stirs the water-based polyurethane liquid inside the filling box 2, preventing stratification and ensuring the physical properties and appearance quality of the synthetic leather meet requirements. Furthermore, the rotation of the stirring rod 3 drives the rotating rod 401, which in turn moves the slider 402. The slider 402, in turn, drives the connecting shaft 406 via the connecting rod 405, which in turn moves the sliding cylinder 407. Based on the crank-slider principle, the sliding cylinder 407 reciprocates up and down with the unidirectional rotation of the rotating rod 401. When the cylinder 407 moves upward, the aqueous polyurethane liquid inside the storage tank 5 enters the connecting pipe 411 and the interior of the slide cylinder 407 through the first one-way valve 409. When the slide cylinder 407 moves downward, the aqueous polyurethane liquid inside the slide cylinder 407 is squeezed and discharged from the second one-way valve 410 into the filling box 2. Therefore, while coating, the consumed aqueous polyurethane liquid can be automatically replenished, avoiding the need for operators to frequently stop the machine to replenish the coating in the filling box 2. This not only significantly improves production efficiency and extends the product delivery cycle, but also reduces the cost of manual intervention. Furthermore, by rotating the screw 403 with the hand knob 404, the screw 403 will drive the slider 402 to slide on the rotating rod 401, thereby adjusting the position of the slider 402. By adjusting the position of the slider 402, the amount of aqueous polyurethane liquid extracted at one time can be adjusted, making it easier to ensure that the amount of consumed aqueous polyurethane liquid is equal to the amount of replenished aqueous polyurethane liquid, thus making it more convenient to use.

[0030] 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.

[0031] 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 surface treatment device for waterborne polyurethane synthetic leather, comprising a support base (1), characterized in that: A loading box (2) is fixedly connected to the support base (1). A stirring rod (3) is rotatably connected to the loading box (2). A paint roller (9) is rotatably connected to the loading box (2). One of the synchronous pulleys (7) is fixedly connected to the stirring rod (3). Another synchronous pulley (7) is fixedly connected to the paint roller (9). The two synchronous pulleys (7) are wound with the same synchronous belt (8). A extraction structure (4) is provided on the stirring rod (3). The extraction structure (4) includes a rotating rod (401) and a slider (402). The rotating rod (401) is fixedly connected to the stirring rod (3). A slider (402) is slidably connected to the rotating rod (401). 02) A connecting rod (405) is rotatably connected to the support base (1), a liquid storage tank (5) is fixedly connected to the liquid storage tank (5), a connecting pipe (411) is fixedly connected to the liquid storage tank (5), a slide cylinder (407) is slidably connected to the connecting pipe (411), a piston (408) is fixedly connected to the slide cylinder (407), a second one-way valve (410) is installed on the slide cylinder (407), a first one-way valve (409) is installed inside the connecting pipe (411), the piston (408) is slidably connected to the connecting pipe (411), a connecting shaft (406) is fixedly connected to the slide cylinder (407), and the connecting shaft (406) is rotatably connected to the connecting rod (405).

2. The surface treatment apparatus for waterborne polyurethane synthetic leather according to claim 1, characterized in that: The top end of the connecting pipe (411) is offset from directly below the stirring rod (3), which is located in the middle of the loading box (2).

3. The surface treatment apparatus for waterborne polyurethane synthetic leather according to claim 1, characterized in that: A lead screw (403) is rotatably connected to the rotating rod (401), and the lead screw (403) is threadedly connected to the slider (402).

4. The surface treatment apparatus for waterborne polyurethane synthetic leather according to claim 3, characterized in that: A knob (404) is fixedly connected to one end of the lead screw (403), and the outer side of the knob (404) is provided with multiple grooves.

5. The surface treatment apparatus for waterborne polyurethane synthetic leather according to claim 1, characterized in that: A motor (10) is mounted on the support base (1), and the output shaft of the motor (10) is fixedly connected to one end of the paint roller (9).

6. The surface treatment apparatus for waterborne polyurethane synthetic leather according to claim 1, characterized in that: The top of the liquid storage tank (5) is threaded with a sealing cap (6), and the outer side of the sealing cap (6) is provided with multiple protrusions.

7. The surface treatment apparatus for waterborne polyurethane synthetic leather according to claim 1, characterized in that: Multiple guide rollers (11) are rotatably connected to the support base (1), and multiple fans (14) are installed on the support base (1).

8. The surface treatment apparatus for waterborne polyurethane synthetic leather according to claim 1, characterized in that: A connecting frame (12) is fixedly connected to the support base (1), and multiple infrared heating tubes (13) are installed inside the connecting frame (12).

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