A calendering apparatus for artificial leather

Abstract

The utility model belongs to artificial leather processing technical field, concretely relates to a kind of artificial leather calendering equipment, including calendering mechanism, waste gas treatment mechanism and winding mechanism, calendering mechanism includes base, frame, upper calendering roll, lower calendering roll and driving motor, and upper calendering roll and lower calendering roll are rotationally connected on frame, and lower calendering roll is transmission connected with the output shaft of driving motor;Waste gas treatment mechanism includes gas collecting hood, purification tank and drive assembly, gas collecting hood is set in the top of calendering mechanism, gas collecting hood is connected with purification tank, and the inside of purification tank is equipped with condensation chamber, electrostatic adsorption chamber and activated carbon adsorption chamber, for waste gas purification treatment, drive assembly is set on frame, for driving gas collecting hood moves up and down;Winding mechanism is set in the back of calendering mechanism, for winding artificial leather.This device not only can calender and wind artificial leather, but also can collect and purify treatment to the waste gas generated in calendering process, reduce environmental pollution.

Description

Technical Field

[0001] This utility model belongs to the field of artificial leather processing technology, and specifically relates to an artificial leather calendering device. Background Technology

[0002] Artificial leather is a plastic product that resembles leather in appearance and feel and can be used as a substitute. It is typically made by coating a fabric base with synthetic resins and various plastic additives. There are three main types: PVC artificial leather, PU artificial leather, and PU synthetic leather. Artificial leather is widely used in packaging, water treatment, chemical processing, chemical sensors, and many other fields. In the production process of artificial leather, the coated artificial leather needs to be calendered and stretched into a certain thickness and surface shape using a calender to facilitate further processing. A calender usually consists of two or more rollers arranged in a specific configuration. Calenders can be classified according to the number of rollers (two-roll, three-roll, four-roll, five-roll, etc.) and according to the arrangement of the rollers ("L", "T", "F", "Z", "S", etc.).

[0003] In the process of calendering artificial leather, the method of "heating and calendering at the same time" is usually adopted. By applying high temperature to the surface of artificial leather, the calendering effect of artificial leather is better and the efficiency is higher. However, after being heated at high temperature, the additives in artificial leather volatilize, such as DOP (dioctyl phthalate), flame retardants, toluene, xylene and other organic substances. These volatilize at high temperature and form oily fumes with an irritating odor, which will pollute the surrounding environment.

[0004] Therefore, there is an urgent need for a synthetic leather calendering equipment to solve the above problems. Utility Model Content

[0005] To address the aforementioned deficiencies in the existing technology, this utility model provides a synthetic leather calendering device, including a calendering mechanism and an exhaust gas treatment mechanism. The calendering mechanism includes a base, a frame, an upper calendering roller, a lower calendering roller, and a drive motor. The frame is fixed on the base. The upper and lower calendering rollers are arranged opposite each other and rotatably connected to the frame. The upper and lower calendering rollers are connected by gear transmission, and the roller shaft of the lower calendering roller is connected to the output shaft of the drive motor.

[0006] The waste gas treatment mechanism includes a gas collection hood, a purification chamber, and a drive assembly. The gas collection hood is located above the frame, and the purification chamber is located behind the gas collection hood. A support rod is fixed to the bottom of the purification chamber. Inside the purification chamber, from front to back, are arranged a condensation chamber, an electrostatic adsorption chamber, and an activated carbon adsorption chamber, which are separated by partitions. An air inlet pipe is connected to one side of the condensation chamber, and this inlet pipe is connected to the top of the gas collection hood via a high-temperature resistant flexible hose. Multiple condensation pipes are installed inside the condensation chamber, and the top of the condensation chamber is connected to the electrostatic adsorption chamber via a first air guide pipe. The adsorption chamber is equipped with corresponding anode and cathode plates. The connection port between the first gas guide pipe and the electrostatic adsorption chamber is located between the anode and cathode plates. The electrostatic adsorption chamber is equipped with a power supply to power the anode and cathode plates. The bottom of the electrostatic adsorption chamber is connected to the activated carbon adsorption chamber through the second gas guide pipe. The activated carbon adsorption chamber has two filter layers arranged vertically inside. Each filter layer includes a filter plate and a honeycomb activated carbon adsorption layer arranged on the filter plate. An exhaust pipe is connected to one side of the activated carbon adsorption chamber. The drive assembly is mounted on the frame and is used to drive the gas collection hood to move up and down.

[0007] Optionally, both the upper and lower calendering rolls are provided with a ceramic heating layer on their exterior.

[0008] Specifically, the ceramic heating layer is riveted to both of the two calendering rollers, and the ceramic heating layer is arranged in a ring. The ceramic heating layer can heat the artificial leather during calendering, and the high temperature acts on the surface of the artificial leather, resulting in better calendering effect and higher efficiency.

[0009] Optionally, a drain pipe is provided at the bottom of the condensation chamber, and a drain valve is provided on the drain pipe.

[0010] Optionally, an exhaust fan is installed on the air intake pipe, an induced draft fan is installed on the exhaust pipe, and an electric ball valve is installed on both the first and second air guide pipes.

[0011] Optionally, the drive assembly includes a fixed bracket, a servo motor, a threaded rod, a guide rod, two sliders, and a connecting rod. The fixed bracket is located on the upper left side of the frame and includes a base plate, a top plate, and a vertical plate fixedly connected between the base plate and the top plate. The base plate is fixedly connected to the frame. The servo motor is fixed on the base plate. The threaded rod is rotatably connected between the top plate and the base plate. The bottom of the threaded rod is connected to the output shaft of the servo motor via a bevel gear transmission pair. The guide rod is vertically fixed on the upper right side of the frame. The threaded rod and the guide rod pass through the two sliders respectively, and one of the sliders is slidably connected to the threaded rod via a nut pair. Limit blocks are provided at both the upper and lower ends of the guide rod. The connecting rod is fixedly connected between the two sliders and passes through the gas collection hood. The connecting rod is fixedly connected to the gas collection hood.

[0012] Optionally, the bevel gear transmission pair includes a meshing horizontal bevel gear and a vertical bevel gear, with the horizontal bevel gear fixed on a threaded rod and the vertical bevel gear mounted on the output shaft of the servo motor.

[0013] Optionally, the artificial leather calendering equipment is also equipped with a winding mechanism. The winding mechanism is located behind the calendering mechanism. The winding mechanism includes a support frame fixed on the base and a winding roller rotatably connected to the support frame. A geared motor is provided on one side of the support frame, and the output shaft of the geared motor is connected to the roller shaft of the winding roller.

[0014] This invention also includes other components that enable the artificial leather calendering equipment to function properly, all of which are conventional techniques in the field. Furthermore, any devices or components not specified in this invention employ conventional techniques in the field, such as drive motors, servo motors, geared motors, exhaust fans, and forced draft fans.

[0015] The working principle of this invention is as follows: Artificial leather is pressed and stretched into a certain thickness and surface shape under the calendering action of the upper and lower calendering rollers, and then wound onto the winding roller by the winding mechanism. During the calendering process, additives in the artificial leather volatilize under high temperature conditions, forming oily fumes. To avoid air pollution, this fumes can be collected and treated using a waste gas treatment mechanism. The exhaust fan and induced draft fan are started, and the gas collection hood is moved downwards via a drive assembly. Specifically, the output shaft of the servo motor rotates forward, driving the threaded rod to rotate, causing the slider to slide downwards, and moving the connecting rod and gas collection hood downwards, allowing the gas collection hood to be closer to the calendering mechanism for easier collection of fumes. The flue gas enters the purification chamber through the gas collection hood and inlet pipe. First, the condensation chamber cools the flue gas through the condenser pipe, reducing the temperature to about 45°C, which reduces the difficulty of subsequent treatment. If the temperature is further reduced to 5-10°C, more than 80% of the DOP vapor can be recovered. After condensation, the flue gas is passed into the electrostatic adsorption chamber, where high-voltage electrostatic adsorption is used to adsorb oil fume particles and organic pollutants, with a removal efficiency of over 95%. This effectively avoids clogging during subsequent activated carbon adsorption. Then, the flue gas is passed into the activated carbon adsorption chamber, where the filter layer deeply purifies the residual volatile organic compounds, with a removal efficiency of over 90%. Finally, the purified clean air is discharged from the purification chamber.

[0016] The beneficial effects of this utility model are that the calendering mechanism can calender artificial leather; the winding mechanism can roll up the calendered artificial leather for easy storage; and the waste gas treatment mechanism can collect and purify the waste gas generated during the calendering process, reducing environmental pollution, and can condense and recover the DOP in it, saving raw materials. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Fig. 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Fig. 2 This is a schematic diagram of the calendering mechanism and drive assembly of this utility model.

[0020] Fig. 3 This is a schematic diagram of the internal structure of the purification box of this utility model.

[0021] In the diagram: 1. Calendering mechanism, 2. Winding mechanism, 3. Base, 4. Frame, 5. Upper calendering roll, 6. Lower calendering roll, 7. Drive motor, 8. Ceramic heating layer, 9. Gas collection hood, 10. Purification box, 11. Condensation chamber, 12. Electrostatic adsorption chamber, 13. Activated carbon adsorption chamber, 14. Air inlet pipe, 15. High-temperature resistant hose, 16. Condensation pipe, 17. First air guide pipe, 18. Drain pipe, 19. Anode plate, 20. Second air guide pipe, 21. Filter plate, 22. Honeycomb activated carbon adsorption layer, 23. Exhaust pipe, 24. Fixed bracket, 25. Servo motor, 26. Threaded rod, 27. Guide rod, 28. Slider, 29. Connecting rod, 30. Bevel gear transmission pair, 31. Exhaust fan, 32. Exhaust fan. Detailed Implementation

[0022] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0023] Example

[0024] like Figs. 1-3 As shown, this utility model embodiment provides a calendering device for artificial leather, including a calendering mechanism 1, an exhaust gas treatment mechanism, and a winding mechanism 2. The calendering mechanism 1 includes a base 3, a frame 4, an upper calendering roller 5, a lower calendering roller 6, and a drive motor 7. The frame 4 is fixed on the base 3. The upper calendering roller 5 and the lower calendering roller 6 are arranged opposite each other and rotatably connected to the frame 4. The upper calendering roller 5 and the lower calendering roller 6 are connected by gear transmission, and the roller shaft of the lower calendering roller 6 is connected to the output shaft of the drive motor 7.

[0025] Both the upper calendering roll 5 and the lower calendering roll 6 are provided with ceramic heating layers 8. The ceramic heating layers 8 are riveted to the two calendering rolls and are arranged in a ring. The ceramic heating layers 8 can heat the artificial leather during calendering. By acting on the surface of the artificial leather at high temperature, the calendering effect of the artificial leather is better and the efficiency is higher.

[0026] The waste gas treatment mechanism includes a gas collection hood 9, a purification chamber 10, and a drive assembly. The gas collection hood 9 is positioned above the frame 4, and the purification chamber 10 is positioned behind the gas collection hood 9. A support rod is fixed to the bottom of the purification chamber 10. Inside the purification chamber 10, from front to back, there are a condensation chamber 11, an electrostatic adsorption chamber 12, and an activated carbon adsorption chamber 13, which are separated by partitions. An air inlet pipe 14 is connected to one side of the condensation chamber 11, and the air inlet pipe 14 is connected to the top of the gas collection hood 9 via a high-temperature resistant flexible hose 15. Multiple condensation pipes 16 are installed inside the condensation chamber 11, and the top of the condensation chamber 11 is connected to the electrostatic adsorption chamber 12 via a first air guide pipe 17. A drain pipe 18 is provided at the bottom of the condensation chamber 11, and a drain valve is provided on the drain pipe 18; the electrostatic adsorption chamber 12 is provided with corresponding anode plates 19 and cathode plates, and the connection port of the first gas guide pipe 17 to the electrostatic adsorption chamber 12 is located between the anode plates 19 and cathode plates. A power supply is provided outside the electrostatic adsorption chamber 12 to supply power to the anode plates 19 and cathode plates. The bottom of the electrostatic adsorption chamber 12 is connected to the activated carbon adsorption chamber 13 through the second gas guide pipe 20; the activated carbon adsorption chamber 13 is provided with two filter layers inside, one above the other. Each filter layer includes a filter plate 21 and a honeycomb activated carbon adsorption layer 22 disposed on the filter plate 21. An exhaust pipe 23 is connected to one side of the activated carbon adsorption chamber 13.

[0027] The drive assembly includes a fixed bracket 24, a servo motor 25, a threaded rod 26, a guide rod 27, two sliders 28, and a connecting rod 29. The fixed bracket 24 is located on the upper left side of the frame 4. The fixed bracket 24 includes a base plate, a top plate, and a vertical plate fixedly connected between the base plate and the top plate. The base plate is fixedly connected to the frame 4. The servo motor 25 is fixed to the base plate. The threaded rod 26 is rotatably connected between the top plate and the base plate. The bottom of the threaded rod 26 is connected to the output shaft of the servo motor 25 through a bevel gear transmission pair 30. The bevel gear transmission pair 30 includes meshing horizontal... The bevel gear and the vertical bevel gear, the horizontal bevel gear are fixed on the threaded rod 26, the vertical bevel gear are installed on the output shaft of the servo motor 25, the guide rod 27 is vertically fixed on the upper right side of the frame 4, the threaded rod 26 and the guide rod 27 respectively pass through two sliders 28, and one of the sliders 28 is slidably connected to the threaded rod 26 through the nut pair of the threaded rod 26. Limit blocks are provided at both the upper and lower ends of the guide rod 27. The connecting rod 29 is fixedly connected between the two sliders 28, and the connecting rod 29 passes through the air collection hood 9, and the connecting rod 29 and the air collection hood 9 are fixedly connected.

[0028] In addition, an exhaust fan 31 is installed on the intake pipe 14, an induced draft fan 32 is installed on the exhaust pipe 23, and an electric ball valve is installed on both the first air guide pipe 17 and the second air guide pipe 20.

[0029] The winding mechanism 2 is located behind the calendering mechanism 1. The winding mechanism 2 includes a support frame fixed on the base 3 and a winding roller rotatably connected to the support frame. A reduction motor is provided on one side of the support frame, and the output shaft of the reduction motor is connected to the roller shaft of the winding roller.

[0030] The working principle of this utility model is as follows: Artificial leather is pressed and stretched into a certain thickness and surface shape under the calendering action of the upper calendering roller 5 and the lower calendering roller 6, and then wound onto the winding roller by the winding mechanism 2. During the calendering process, additives in the artificial leather volatilize under high temperature conditions, forming oily fumes. To avoid air pollution, this part of the fumes can be collected and treated using a waste gas treatment mechanism. The exhaust fan 31 and the induced draft fan 32 are started, and the gas collection hood 9 is moved downwards through the drive assembly. Specifically, the output shaft of the servo motor 25 rotates forward, driving the threaded rod 26 to rotate, causing the slider 28 to slide downwards, and driving the connecting rod 29 and the gas collection hood 9 to move downwards, so that the gas collection hood 9 can be closer to the calendering mechanism 1 for easier winding. The flue gas is collected; the flue gas enters the purification chamber 10 through the gas collection hood 9 and the air inlet pipe 14. First, the condensation chamber 11 cools the flue gas through the condensation pipe 16, reducing the flue gas temperature to about 45°C, reducing the difficulty of subsequent treatment. If the temperature is further reduced to 5-10°C, more than 80% of DOP vapor can be recovered. After condensation, the flue gas is passed into the electrostatic adsorption chamber 12, where oil fume particles and organic pollutants are adsorbed by high voltage electrostatic adsorption, with a removal efficiency of more than 95%, which can effectively avoid clogging during subsequent activated carbon adsorption. Then, the flue gas is passed into the activated carbon adsorption chamber 13, where the filter layer deeply purifies the residual volatile organic compounds, with a removal efficiency of over 90%. Finally, the purified clean air is discharged from the purification chamber 10.

[0031] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A synthetic leather calendering device, comprising a calendering mechanism and a waste gas treatment mechanism, characterized in that: The calendering mechanism includes a base, a frame, an upper calendering roll, a lower calendering roll, and a drive motor. The frame is fixed on the base. The upper and lower calendering rolls are arranged opposite each other and rotatably connected to the frame. The upper and lower calendering rolls are connected by a transmission, and the roll shaft of the lower calendering roll is connected to the output shaft of the drive motor. The waste gas treatment mechanism includes a gas collection hood, a purification box, and a drive assembly. The gas collection hood is located above the frame, and the purification box is located behind the gas collection hood. A support rod is fixed to the bottom of the purification box. Inside the purification box, from front to back, there are a condensation chamber, an electrostatic adsorption chamber, and an activated carbon adsorption chamber, which are separated by partitions. An air inlet pipe is connected to one side of the condensation chamber, and the air inlet pipe is connected to the top of the gas collection hood via a flexible hose. Multiple condensation pipes are installed inside the condensation chamber. The top of the condensation chamber is connected to the electrostatic adsorption chamber via a first air guide pipe. The electrostatic adsorption chamber has corresponding anode plates and cathode plates inside. The bottom of the electrostatic adsorption chamber is connected to the activated carbon adsorption chamber via a second air guide pipe. The activated carbon adsorption chamber has two filter layers arranged vertically inside, each filter layer including a filter plate and an activated carbon adsorption layer set on the filter plate. An exhaust pipe is connected to one side of the activated carbon adsorption chamber. The drive assembly is mounted on the frame and is used to drive the gas collection hood to move up and down.

2. The artificial leather calendering equipment according to claim 1, characterized in that: Both the upper and lower calendering rolls are equipped with ceramic heating layers on their exteriors.

3. The artificial leather calendering equipment according to claim 2, characterized in that: A drain pipe is installed at the bottom of the condenser, and a drain valve is installed on the drain pipe.

4. The artificial leather calendering equipment according to claim 3, characterized in that: An exhaust fan is installed on the air intake pipe, an induced draft fan is installed on the exhaust pipe, and electric ball valves are installed on both the first and second air guide pipes.

5. The artificial leather calendering equipment according to claim 4, characterized in that: The drive assembly includes a fixed bracket, a servo motor, a threaded rod, a guide rod, two sliders, and a connecting rod. The fixed bracket is located on the upper left side of the frame and includes a base plate, a top plate, and a vertical plate fixedly connected between the base plate and the top plate. The base plate is fixedly connected to the frame, and the servo motor is fixed on the base plate. The threaded rod is rotatably connected between the top plate and the base plate, and the bottom of the threaded rod is connected to the output shaft of the servo motor through a bevel gear transmission pair. The guide rod is vertically fixed on the upper right side of the frame. The threaded rod and the guide rod pass through the two sliders respectively, and one of the sliders is slidably connected to the threaded rod through the nut pair of the threaded rod. The connecting rod is fixedly connected between the two sliders and passes through the gas collection hood, and the connecting rod is fixedly connected to the gas collection hood.

6. The artificial leather calendering equipment according to claim 5, characterized in that: The bevel gear transmission pair includes a meshing horizontal bevel gear and a vertical bevel gear. The horizontal bevel gear is fixed on a threaded rod, and the vertical bevel gear is mounted on the output shaft of the servo motor.

7. The artificial leather calendering equipment according to claim 6, characterized in that: It is also equipped with a winding mechanism, which is located behind the calendering mechanism. The winding mechanism includes a support frame fixed on the base and a winding roller rotatably connected to the support frame. A geared motor is provided on one side of the support frame, and the output shaft of the geared motor is connected to the roller shaft of the winding roller.

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