A high-pressure injection device for solvent-type waterproof agent of synthetic leather

Abstract

The utility model discloses a kind of synthetic leather high-pressure injection devices of solvent type waterproof agent, belong to synthetic leather production and processing equipment technical field, including: box, injection subassembly being set in the box, conveying subassembly being set on the two side edges of the box, heating subassembly being set in the box, and cooling subassembly being set on the outside of the box;The injection subassembly includes: the water storage tank of several being set in the bottom surface and top surface of the inner wall of the box, spray gun being connected to several water storage tanks;The conveying subassembly includes: the first motor of several being set on the two side edges of the box in up-down opposite, the coupling of several being connected to several first motor, and the transmission roller between the output end of several coupling being connected;The utility model is used in cooperation with heating subassembly and injection subassembly, forces waterproof agent to break through surface tension, penetrates deeply into synthetic leather fiber inside, accelerates effective component solidification film.

Description

Technical Field

[0001] This utility model relates to the technical field of synthetic leather production and processing equipment, and in particular to a high-pressure injection device for a solvent-based waterproofing agent in synthetic leather. Background Technology

[0002] With the widespread application of synthetic leather in footwear, bags, automotive interiors, and furniture, the market demands increasingly higher functionalities from synthetic leather, among which waterproofing is a crucial indicator of quality. Current waterproofing processes for synthetic leather primarily employ surface spraying or roller coating. Specifically, solvent-based waterproofing agents are applied to the surface of the synthetic leather using a spray gun or roller, and after drying, a waterproof film is formed.

[0003] Most existing waterproofing agent application devices are open-type impregnation tanks or low-pressure atomizing sprayers, which have the following drawbacks in actual production: direct application of waterproofing agent to synthetic leather results in poor absorption by the synthetic leather; spraying of waterproofing agent generates mist, which is harmful to human health if not dealt with in time. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and provides a high-pressure injection device for solvent-based waterproofing agents in synthetic leather.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-pressure injection device for synthetic leather using solvent-based waterproofing agent, comprising: a housing, an injection assembly disposed within the housing, a conveying assembly disposed on both sides of the housing, a heating assembly disposed within the housing, and a cooling assembly disposed outside the housing.

[0006] The injection assembly includes: a plurality of water tanks disposed on the bottom and top surfaces of the inner wall of the box, and a spray gun connected to the plurality of water tanks;

[0007] The conveying assembly includes: a plurality of first motors arranged vertically opposite each other on both sides of the housing, a plurality of couplings connected to the plurality of first motors, and a transmission roller connected between the output ends of the plurality of couplings.

[0008] The heating assembly includes: a plurality of infrared lamps disposed between the upper and lower walls of the inner wall of the box, and mounting bases are installed on the outer sides of the plurality of infrared lamps;

[0009] The cooling assembly includes: a plurality of air intake pipes disposed on the outside of the housing, and a cooling mechanism connected to the ends of the plurality of air intake pipes;

[0010] The other end of the cooling component is connected to a filter component.

[0011] In a preferred embodiment of the present invention, the cooling mechanism includes an exhaust fan connected to the intake pipe, a cooling box connected to the other end of the exhaust fan, and a liquid storage tank disposed in the center of the cooling box.

[0012] In a preferred embodiment of the present invention, a coolant jacket is provided between the liquid storage tank and the cooling tank, and a coolant inlet is provided at the top of the coolant jacket.

[0013] In a preferred embodiment of this utility model, a liquid outlet is provided at the bottom of the liquid storage tank, and a valve is provided at the liquid outlet.

[0014] In a preferred embodiment of the present invention, the filter assembly includes a filter box connected to the other end of the cooling box, a filter layer disposed inside the filter box, and an upward handle provided on the outside of the filter layer.

[0015] In a preferred embodiment of this utility model, an inlet and an outlet are respectively provided on both sides of the box body, and the inlet and outlet are at the same height and are of equal size.

[0016] In a preferred embodiment of this utility model, a detachable sleeve is provided outside the transmission roller near the feed inlet, and a sponge sleeve is provided outside the transmission roller near the discharge outlet.

[0017] In a preferred embodiment of this utility model, a hot air blower is provided between the sponge sleeve and the discharge port, and the air outlet of the hot air blower is directed towards the inside of the box.

[0018] In a preferred embodiment of this utility model, a plurality of door frames are provided on the outer side of the housing near the transmission roller, and a plurality of push-pull handles are provided on the plurality of door frames.

[0019] In a preferred embodiment of this utility model, several water supply pipes are provided on one side of several of the water storage tanks.

[0020] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0021] (1) This invention uses a heating component and an injection component in conjunction to preheat the synthetic leather with an infrared lamp, causing the micropores of its internal fibers to expand. This is followed by spraying with a high-pressure jet generated by a water tank and spray gun. This synergistic effect of heating and high pressure effectively reduces the viscosity of the waterproofing agent and forces it to overcome surface tension, penetrating deeply into the synthetic leather fibers and accelerating the curing of the active ingredients into a film. Compared to the problem of poor absorption in synthetic leather caused by simply relying on surface spraying or roller coating in existing technologies, this device significantly improves the penetration efficiency due to micropore expansion, thereby greatly enhancing the waterproof performance and quality consistency of the finished synthetic leather product.

[0022] (2) This utility model is equipped with a complete cooling and filtration assembly. The hot air and volatile solvent vapors inside the chamber are extracted by a blower connected to the suction pipe and sent to a cooling box with a coolant jacket and a storage tank for heat exchange and condensation. Finally, the air is treated by the filter layer in the filtration box. This process can collect, condense and liquefy the harmful sprays and solvent vapors generated in the production process and filter impurities. In view of the disadvantage that the spray generated by the application of waterproofing agent in the prior art is harmful to the human body if it is not treated in time, this device realizes the effective purification and recovery of waste gas, which reduces environmental pollution while protecting the health of operators, and facilitates the subsequent recovery and treatment of condensate.

[0023] (3) This utility model has optimized the design of the transmission rollers of the conveying component. A detachable sleeve is provided on the outside of the transmission roller near the feed inlet, and a sponge sleeve is provided on the outside of the transmission roller near the discharge outlet. The detachable sleeve at the feed inlet acts as a sacrificial part to pre-adhere and remove dust and contaminants carried by the synthetic leather, preventing them from polluting the environment inside the box or clogging the spray gun; while the sponge sleeve at the discharge outlet can wipe away excess waterproofing agent or condensation solvent that has not been fully absorbed from the surface of the synthetic leather. Compared with traditional equipment that lacks a targeted cleaning and finishing mechanism, this design can effectively prevent impurities from being brought in and eliminate surface droplet marks, making the surface of the finished synthetic leather cleaner, smoother and more uniform in color, significantly improving the appearance quality of the product.

[0024] (4) This utility model is equipped with a hot air blower auxiliary drying mechanism at the discharge end. The hot air blower is located between the sponge sleeve and the discharge port, and its air outlet is directly aimed at the surface of the synthetic leather inside the box after wiping. The hot air generated by the hot air blower can not only further dry the synthetic leather after wiping with the sponge sleeve to ensure that the waterproofing agent is completely cured, but also effectively remove residual moisture or solvents from the surface. Compared with equipment that relies solely on natural air drying or a single drying tunnel, this design uses hot air to further increase the discharge temperature of the synthetic leather, so that it maintains a certain degree of softness and elasticity, ensuring thorough drying and facilitating subsequent processing. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0026] Figure 1 This is a perspective structural diagram of a preferred embodiment of the present invention;

[0027] Figure 2 This is a rear view of a preferred embodiment of the present invention;

[0028] Figure 3 This is an internal structural diagram of a preferred embodiment of the present invention;

[0029] Figure 4This is a diagram of the transmission component according to a preferred embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of the cooling box according to a preferred embodiment of the present invention;

[0031] Figure 6 This is a cross-sectional view of the filter box according to a preferred embodiment of the present invention;

[0032] In the diagram: 1. Box body; 2. Water tank; 3. Spray gun; 4. First motor; 5. Coupling; 6. Drive roller; 7. Infrared lamp tube; 8. Mounting base; 9. Suction pipe; 10. Exhaust fan; 11. Cooling box; 12. Liquid storage tank; 13. Coolant jacket; 14. Coolant inlet; 15. Liquid outlet; 16. Valve; 17. Filter box; 18. Filter layer; 19. Lifting handle; 20. Feed inlet; 21. Discharge outlet; 22. Removable sleeve; 23. Sponge sleeve; 24. Hot air blower; 25. Door frame; 26. Push-pull handle; 27. Water supply pipe. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] like Figures 1-6 As shown, a high-pressure injection device for a solvent-based waterproofing agent on synthetic leather includes: a housing 1, an injection assembly disposed inside the housing 1, a conveying assembly disposed on both sides of the housing 1, a heating assembly disposed on the housing 1, and a cooling assembly disposed outside the housing 1.

[0035] In this invention, the injection assembly includes: several water tanks 2 disposed on the bottom and top surfaces of the inner wall of the housing 1; spray guns 3 connected to the several water tanks 2; and several water supply pipes 27 disposed on one side of each of the several water tanks 2. The water tanks 2 are disposed on the bottom and top surfaces of the inner wall of the housing 1, respectively located on the upper and lower sides of the synthetic leather. Each water tank 2 is connected to several spray guns 3 via pipes, and the spray guns 3 are evenly distributed below or above the water tanks 2 to ensure that the waterproofing agent can be evenly sprayed onto the surface of the synthetic leather. The other end of the water supply pipes 27 is connected to a supply system to ensure a continuous supply of the waterproofing agent. The waterproofing agent in the water tanks 2 is precisely sprayed onto both sides of the moving synthetic leather from both top and bottom directions via the top and bottom spray guns 3, using high-pressure jets of waterproofing agent. The spray guns 3 typically produce a high-pressure atomization effect, allowing the waterproofing agent to better penetrate into the fibers of the synthetic leather.

[0036] In this invention, the conveying assembly includes: a plurality of first motors 4 arranged vertically opposite each other on both sides of the housing 1; a plurality of couplings 5 ​​connected to the plurality of first motors 4; and a transmission roller 6 connected between the output ends of the plurality of couplings 5. The first motors 4 are installed in opposite positions on both sides of the housing 1 to provide power. The first motors 4 are connected to the transmission rollers 6 through the couplings 5. The function of the couplings 5 ​​is to transmit the rotational motion of the motors to the transmission rollers 6, compensate for minor alignment errors, smoothly transmit torque, and protect the bearings of the motors and the transmission rollers 6. The output end of the coupling 5 is connected to one end of the transmission roller 6 to ensure that the power of the motors can be efficiently transmitted to the transmission rollers 6. The transmission rollers 6 are mounted on both sides of the housing 1 through bearings to ensure that they can rotate freely.

[0037] In this invention, a detachable sleeve 22 is provided outside the drive roller 6 near the feed inlet 20. The synthetic leather entering the housing 1 carries dust, fibers, or other contaminants from previous processes. The detachable sleeve 22 acts as a sacrificial component or barrier, contacting the contaminants first. Used detachable sleeves 22 can be removed for cleaning or replacement to prevent contaminants from being carried into the housing, polluting the internal environment, clogging the spray gun 3, or even affecting the quality of subsequent synthetic leather products. A sponge sleeve 23 is provided outside the drive roller 6 near the discharge outlet 21. After internal processing, the surface of the synthetic leather may contain excess waterproofing agent or condensed solvent that has not been fully absorbed. The sponge sleeve 23, under pressure, contacts the surface of the synthetic leather, effectively wiping away these excess droplets, resulting in a cleaner, smoother, and more uniformly colored finished product. Used sponge sleeves 23 can be replaced to maintain their working condition.

[0038] In this invention, the heating component includes: a plurality of infrared lamps 7 disposed between the upper and lower inner walls of the housing 1, with mounting bases 8 installed on the outer sides of the infrared lamps 7; the infrared lamps 7 are installed between the upper and lower inner walls of the housing 1, distributed above and below the synthetic leather, ensuring that the synthetic leather can be heated evenly during transmission. One end of the mounting base 8 is connected to the structure of the housing 1, and the other end is used to firmly lock the infrared lamps 7. Infrared heating can quickly raise the temperature of the synthetic leather. The temperature rise causes the micropores of the fibers inside the synthetic leather to expand, and the waterproofing agent liquid sprayed onto it will reduce the viscosity of the waterproofing agent. The organic solvent in the solvent-based waterproofing agent will evaporate rapidly after obtaining heat, accelerating the curing of the effective components of the waterproofing agent (such as fluorocarbon compounds) into a film between the fibers, promoting the penetration and curing of the waterproofing agent inside the synthetic leather, and improving the waterproofing effect.

[0039] In this invention, the cooling assembly includes: a plurality of suction pipes 9 disposed on the outside of the housing 1, and a cooling mechanism connected to the ends of the suction pipes 9; the cooling mechanism includes an exhaust fan 10 connected to the suction pipes 9, a cooling box 11 connected to the other end of the exhaust fan 10, and a liquid storage tank 12 disposed at the center of the cooling box 11. The suction pipes 9 are disposed on the outside of the housing 1 and are used to extract hot air or volatile solvent vapor from inside the housing 1. The ends of the suction pipes 9 are connected to the air inlet of the exhaust fan 10. The exhaust fan 10 is driven by a motor to generate negative pressure, thereby extracting hot air or vapor from inside the housing 1.

[0040] In this invention, the exhaust port of the exhaust fan 10 is connected to the air inlet of the cooling box 11 via a pipe. Hot air or steam is drawn out by the exhaust fan 10 and enters the cooling box 11 for cooling. The cooling box 11 is a sealed container. A liquid storage tank 12 is located in the center of the cooling box 11 to store the cooled liquid. A coolant jacket 13 is located between the liquid storage tank 12 and the cooling box 11. The coolant circulates through the jacket, carrying away heat and lowering the temperature inside the cooling box 11. A coolant inlet 14 is provided at the top of the coolant jacket 13 for injecting coolant into the jacket. An outlet 15 is provided at the bottom of the liquid storage tank 12, and a valve 16 is installed at the outlet 15 to control the discharge of the cooled liquid.

[0041] In this invention, when the device is started, the exhaust fan 10 begins operation, drawing hot air or steam out of the housing 1 through the suction pipe 9. After being drawn out by the exhaust fan 10, the hot air or steam enters the cooling tank 11. Inside the cooling tank 11, the hot air or steam exchanges heat with the coolant in the coolant jacket 13. The coolant absorbs heat, lowering the temperature of the hot air or steam. The cooled liquid flows into the storage tank 12 for storage. When the coolant in the storage tank 12 reaches a certain level, the coolant is discharged by opening the valve 16 for recycling or treatment.

[0042] In this invention, a filter assembly is connected to the other end of the cooling assembly. The filter assembly includes a filter box 17 connected to the other end of the cooling box 11, and a filter layer 18 disposed within the filter box 17; the filter layer 18 is provided with an upward-lifting handle 19. The inlet of the filter box 17 is designed to receive gas or liquid discharged from the cooling box 11, ensuring its smooth entry into the filter box 17 for subsequent processing. The filter layer 18 inside the filter box 17 is used to filter impurities, particulate matter, or harmful substances generated during the cooling process. The upward-lifting handle 19 on the outside of the filter layer 18 facilitates regular replacement or cleaning by operators, ensuring the continuity of the filtration effect.

[0043] In this invention, the gas or liquid treated by the cooling box 11 enters the filter box 17 through a pipe. The gas or liquid may contain impurities, solvent residues, or other harmful substances generated during the cooling process, requiring further filtration. When the gas or liquid passes through the filter layer 18, the filter layer 18 intercepts the impurities, particulate matter, or harmful substances, ensuring that the discharged gas or liquid meets environmental standards. The filter layer 18 is typically designed with multiple layers of filter materials, such as activated carbon, filter screens, and filter cotton, to improve the filtration effect.

[0044] In this invention, the inlet 20 and outlet 21 are respectively located on both sides of the housing 1 and at the same height. This symmetrical layout facilitates the smooth transport of synthetic leather within the housing 1, preventing stretching or wrinkling of the synthetic leather due to height differences. The inlet 20 and outlet 21 are of equal size, ensuring that the width of the transport channel is consistent when the synthetic leather enters and leaves the housing 1, avoiding transport problems caused by size differences.

[0045] In this invention, the hot air blower 24 is installed between the sponge sleeve 23 and the discharge port 21, with its air outlet facing the inside of the housing 1 to ensure that the hot air can directly act on the treated synthetic leather surface. After the synthetic leather has been processed by the injection and heating components, it enters the area of ​​the sponge sleeve 23 before the discharge port 21. The hot air blower 24 is started, blowing hot air into the housing 1. The hot air further dries the surface of the synthetic leather after it has been wiped by the sponge sleeve 23, ensuring that the waterproofing agent is completely cured and removing surface moisture or residual solvent. The hot air also increases the surface temperature of the synthetic leather, allowing it to maintain a certain degree of softness and elasticity when discharged, facilitating subsequent processing.

[0046] In this invention, several door frames 25 are installed on the outside of the housing 1 near the transmission roller 6. Each door frame 25 is equipped with a push-pull handle 26 for easy opening and closing by the operator. The operator can open the door frame 25 through the push-pull handle 26 to enter the housing 1 for routine maintenance, such as cleaning, inspection, or replacement of parts. The door frames 25 can also be used for loading and unloading materials, such as replacing the waterproofing agent in the water tank 2, cleaning the filter assembly, and installing synthetic leather.

[0047] In use, synthetic leather enters the device through the feed inlet 20 on one side of the housing 1. The synthetic leather enters the heating zone composed of upper and lower infrared lamps 7. The heat causes the micropores of the synthetic leather fibers to expand. The synthetic leather passes through the transmission roller 6, which is wrapped with a detachable sleeve 22, adhering to and removing dust and contaminants carried from the outside. The synthetic leather is conveyed by opposing motors and transmission rollers 6. Simultaneously, the spray gun arrays 3 located at the top and bottom of the housing 1 are activated, and solvent-based waterproofing agent from the water tank 2 is precisely sprayed onto the upper and lower surfaces of the moving synthetic leather under high pressure. The high pressure forces the waterproofing agent to break through the surface and begin to penetrate into the fibers. The exhaust fan 10 generates negative pressure, drawing hot air or steam from the housing 1 and sending it into the cooling tank 11. The hot air or steam exchanges heat with the coolant in the coolant jacket 13, absorbing heat and lowering the temperature of the hot air or steam. The cooled liquid flows into the storage tank 12 for storage. The gas or liquid treated in the cooling tank 11 enters the filter tank 17 through a pipe. The filter box 17 has an internal filter layer 18 for filtering impurities and solvent residues generated during the cooling process. An upward handle 19 is located on the outside of the filter layer 18, facilitating regular replacement or cleaning by operators. A sponge sleeve 23 is located on the outside of the drive roller 6 near the discharge port 21, used to wipe the surface of the synthetic leather to remove excess waterproofing agent or condensed solvent, resulting in a cleaner, smoother, and more uniformly colored finished product. A hot air blower 24 is installed between the sponge sleeve 23 and the discharge port 21, with its air outlet directed towards the inside of the box 1. The hot air blower 24 into the box 1 to further dry the synthetic leather surface after wiping with the sponge sleeve 23, ensuring complete curing of the waterproofing agent and removing surface moisture or residual solvent.

[0048] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-pressure injection device for a solvent-based waterproofing agent on synthetic leather, comprising: The enclosure (1), the injection assembly disposed within the enclosure (1), the conveying assemblies disposed on both sides of the enclosure (1), the heating assembly disposed within the enclosure (1), and the cooling assembly disposed on the outside of the enclosure (1), characterized in that, The injection assembly includes: a plurality of water tanks (2) disposed on the bottom and top surfaces of the inner wall of the housing (1), and a spray gun (3) connected to the plurality of water tanks (2); The transmission assembly includes: a plurality of first motors (4) arranged opposite each other on the two sides of the housing (1), a plurality of couplings (5) connected to the plurality of first motors (4), and a transmission roller (6) connected between the output ends of the plurality of couplings (5). The heating assembly includes: a plurality of infrared lamps (7) disposed between the upper and lower inner walls of the housing (1), and mounting bases (8) are installed on the outer sides of the plurality of infrared lamps (7); The cooling assembly includes: a plurality of air intake pipes (9) disposed on the outside of the housing (1), and a cooling mechanism connected to the ends of the plurality of air intake pipes (9); The other end of the cooling component is connected to a filter component.

2. The high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 1, characterized in that: The cooling mechanism includes a blower (10) connected to the suction pipe (9), a cooling box (11) connected to the other end of the blower (10), and a liquid storage tank (12) located in the center of the cooling box (11).

3. The high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 2, characterized in that: There is a coolant jacket (13) between the liquid storage tank (12) and the cooling tank (11), and a coolant inlet (14) is opened at the top of the coolant jacket (13).

4. The high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 2, characterized in that: The liquid storage tank (12) has a liquid outlet (15) at the bottom, and a valve (16) is provided at the liquid outlet (15).

5. The high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 2, characterized in that: The filter assembly includes a filter box (17) connected to the other end of the cooling box (11), and a filter layer (18) disposed in the filter box (17); the filter layer (18) is provided with an upward handle (19).

6. The high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 1, characterized in that: The box body (1) is provided with a feed inlet (20) and a discharge outlet (21) on both sides respectively. The feed inlet (20) and the discharge outlet (21) are at the same height and are of equal size.

7. The high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 6, characterized in that: A detachable sleeve (22) is provided outside the drive roller (6) near the feed inlet (20), and a sponge sleeve (23) is provided outside the drive roller (6) near the discharge outlet (21).

8. The high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 7, characterized in that: A hot air blower (24) is provided between the sponge sleeve (23) and the discharge port (21), and the air outlet of the hot air blower (24) is directed towards the inside of the box (1).

9. The high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 1, characterized in that: Several door frames (25) are provided on the outer side of the housing (1) near the transmission roller (6), and several push-pull handles (26) are provided on the several door frames (25).

10. A high-pressure injection device for a solvent-based waterproofing agent on synthetic leather according to claim 1, characterized in that: Several water supply pipes (27) are provided on one side of several of the water storage tanks (2).

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