A chemical impregnation device for polyurethane leather

Abstract

The utility model relates to polyurethane leather processing technical field, and disclose a chemical dipping device for polyurethane leather, solved the problem that the present leather base's dipping effect is not good, it includes the box, is equipped with extrusion stirring mechanism on the box, is equipped with the limiting mechanism on extrusion stirring mechanism, the top fixedly connected with liquid inlet pipe of box, the bottom fixedly connected with the liquid discharge hopper of box, the bottom fixedly connected with the liquid discharge pipe of liquid discharge hopper, both sides of box are equipped with opening, two openings are all rotatably connected with the guide roller, extrusion stirring mechanism includes the U type round bar of fixed in the top of box, the outside movable sleeve joint of U type round bar has the lifting plate, the bottom fixed mounting of lifting plate has drive motor, the bottom rotatable connection of lifting plate has driven shaft, drive motor is fixedly connected with driving shaft, the utility model discloses, can be stirred to the chemical liquid of leather base both sides, thereby conveniently improve the dipping effect of leather base.

Description

Technical Field

[0001] This utility model belongs to the field of polyurethane leather processing technology, specifically a chemical impregnation device for polyurethane leather. Background Technology

[0002] Polyurethane leather is a type of imitation leather material made by coating, impregnating, and other processes with polyurethane resin and related additives, using non-woven fabrics, knitted fabrics, etc. as a base, followed by molding and curing. It has the characteristics of softness, wear resistance, and water resistance, and is widely used in footwear, bags, furniture, automotive interiors and other fields. It is an important substitute for natural leather.

[0003] Chemical impregnation is the core process in the preparation of polyurethane leather. Its purpose is to allow the polyurethane chemical solution to fully penetrate the base fiber and form a uniform bonding layer to ensure the final performance of the leather. However, in the existing technology, most devices only directly immerse the leather base in the chemical solution, which leads to the chemical solution being prone to stratification and precipitation, uneven concentration, and difficulty in venting air from the gaps in the base fiber. This results in problems such as insufficient impregnation and uneven coating thickness, affecting the quality stability of the polyurethane leather. Utility Model Content

[0004] In view of the above situation and to overcome the shortcomings of the prior art, this utility model provides a chemical impregnation device for polyurethane leather, which effectively solves the problem of poor impregnation effect of leather substrate.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a chemical impregnation device for polyurethane leather, comprising a box body, wherein the box body is provided with a squeezing and stirring mechanism, the squeezing and stirring mechanism is provided with a limiting mechanism, an inlet pipe is fixedly connected to the top of the box body, an outlet hopper is fixedly connected to the bottom of the box body, an outlet pipe is fixedly connected to the bottom end of the outlet hopper, and an opening is provided on both sides of the box body, and a guide roller is rotatably connected to each of the two openings.

[0006] The extrusion mixing mechanism includes a U-shaped rod fixed to the top of the box, a lifting plate movably sleeved on the outside of the U-shaped rod, a drive motor fixedly installed at the bottom of the lifting plate, a driven shaft rotatably connected to the bottom of the lifting plate, a drive shaft fixedly connected to the drive motor, and transmission gears fixedly connected to the outside of both the drive shaft and the driven shaft, with the two transmission gears meshing with each other. A U-shaped frame is provided inside the box, with a pressure roller on the inside of the U-shaped frame. The bottom ends of both the drive shaft and the driven shaft extend into the box and are rotatably connected to the top of the U-shaped frame. Multiple mixing rods located inside the box are fixedly connected to the outside of both the drive shaft and the driven shaft. A support roller located below the pressure roller is rotatably connected inside the box, and a mixing shaft located below the support roller is rotatably connected inside the box. Multiple mixing rods are fixedly connected to the outside of the mixing shaft.

[0007] Preferably, a top seat is fixedly sleeved on the outer middle of the U-shaped rod, and an electric push rod is fixedly installed at the bottom of the top seat. The top of the lifting plate is fixed to the output end of the electric push rod. By fixing the electric push rod with the top seat, the lifting plate is driven to rise and fall smoothly along the U-shaped rod, accurately adjusting the height of the pressure roller and providing stable power support for subsequent extrusion air removal and bevel gear engagement.

[0008] Preferably, two guide cylinders are symmetrically fixedly connected to the inner top wall of the housing. Each guide cylinder contains a guide post that is movably fitted inside. The bottom ends of both guide posts are fixed to the top of the U-shaped frame. The guide posts slide against the guide cylinders, providing precise positioning and guidance for the lifting and lowering of the U-shaped frame, preventing deviation, ensuring alignment of the pressure roller and support roller, and ensuring uniform force distribution when pressing the leather base.

[0009] Preferably, two L-shaped rods are symmetrically fixedly connected to the inner side of the U-shaped frame. Slider blocks are movably sleeved on the outer sides of each L-shaped rod. A pressure roller is rotatably connected between the two sliders. Springs are fixedly connected between the tops of the two sliders and the U-shaped frame, and each spring is sleeved on the outer side of the two L-shaped rods. The sliders slide along the L-shaped rods, and the springs provide elastic cushioning, allowing the pressure roller to adapt to the leather thickness, maintain a tight fit, efficiently expel air from the fiber gaps, and improve the uniformity of impregnation.

[0010] Preferably, a rotating shaft is rotatably connected to the bottom of the lifting plate, and a conveyor belt is connected between the rotating shaft and the drive shaft. A bevel gear one is fixedly connected to the bottom end of the rotating shaft, and one end of the stirring shaft extends to the outside of the housing and is fixedly connected to a bevel gear two, which is compatible with bevel gear one. The power transmission between the drive shaft and the rotating shaft is achieved through the conveyor belt, and the precise meshing of the bevel gears drives the stirring shaft to rotate, allowing stirring rods one and two to stir synchronously and preventing the chemical liquid from separating and settling.

[0011] Preferably, the limiting mechanism includes a limiting ring located on the outer side of the rotating shaft. A support plate is fixedly connected between the limiting ring and the housing. An annular groove is provided on the inner side of the limiting ring, and multiple balls, all abutting against the rotating shaft, are installed at equal angles on the inner side of the annular groove. The support plate fixes the limiting ring, and the balls in the annular groove abut against the rotating shaft, which both limits and guides movement and reduces friction, ensuring stable lifting and rotation of the rotating shaft and guaranteeing reliable bevel gear transmission.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Through the cooperation of electric push rod, lifting plate, U-shaped round rod, U-shaped frame, guide column, guide cylinder, L-shaped round rod, slider, spring, pressure roller and support roller, the leather base can be squeezed to expel the air in the fiber gaps. Through the cooperation of drive motor, drive shaft, driven shaft, transmission gear, stirring rod 2, conveyor belt, rotating shaft, bevel gear 1, bevel gear 2, stirring shaft and stirring rod 1, the chemical liquid on both sides of the leather base can be stirred, thereby facilitating the improvement of the impregnation effect of the leather base;

[0014] 2. The support plate, the limiting ring, and the ball bearings work together to limit the movement of the shaft, thus ensuring the stability of the shaft during movement and rotation. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the chemical impregnation device for polyurethane leather according to the present invention.

[0018] Figure 2 This is a schematic cross-sectional view of the box body of this utility model;

[0019] Figure 3 This is a schematic diagram of the extrusion mixing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the U-shaped frame structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the limiting mechanism of this utility model.

[0022] In the diagram: 1. Box body; 2. Extrusion and stirring mechanism; 201. U-shaped round rod; 202. Top seat; 203. Electric push rod; 204. Drive motor; 205. Conveyor belt; 206. Rotary shaft; 207. Drive shaft; 208. U-shaped frame; 209. Bevel gear one; 2010. Bevel gear two; 2011. Stirring shaft; 2012. Stirring rod one; 2013. Support roller; 2014. Pressure roller; 2015. Stirring rod. 2. Stirring rod 2; 2016. Driven shaft; 2017. Transmission gear; 2018. Lifting plate; 2019. L-shaped round rod; 2020. Slider; 2021. Spring; 2022. Guide cylinder; 2023. Guide column; 3. Limiting mechanism; 301. Limiting ring; 302. Support plate; 303. Annular groove; 304. Ball bearing; 4. Drain pipe; 5. Drain hopper; 6. Inlet pipe; 7. Guide roller; 8. Opening. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Example 1, by Figures 1-2 This utility model relates to a chemical impregnation device for polyurethane leather, comprising a box body 1, a squeezing and stirring mechanism 2 on the box body 1, a limiting mechanism 3 on the squeezing and stirring mechanism 2, an inlet pipe 6 fixedly connected to the top of the box body 1, through which chemical liquid can be injected into the box body 1, a drain hopper 5 fixedly connected to the bottom of the box body 1, a drain pipe 4 fixedly connected to the bottom end of the drain hopper 5, and a solenoid valve installed on the drain pipe 4 to facilitate the discharge of chemical liquid in the box body 1, and openings 8 on both sides of the box body 1, with guide rollers 7 rotatably connected to each of the two openings 8, so that the leather substrate can penetrate the box body 1 for chemical impregnation through the cooperation between the guide rollers 7 and the openings 8.

[0025] Specifically, by Figures 3-4 The extrusion mixing mechanism 2 includes a U-shaped rod 201 fixed to the top of the housing 1. A lifting plate 2018 is movably sleeved on the outside of the U-shaped rod 201. A drive motor 204 is fixedly installed at the bottom of the lifting plate 2018. A driven shaft 2016 is rotatably connected to the bottom of the lifting plate 2018. A drive shaft 207 is fixedly connected to the drive motor 204. Transmission gears 2017 are fixedly connected to the outside of both the drive shaft 207 and the driven shaft 2016. The two transmission gears 2017 mesh with each other. A U-shaped frame 208 is provided inside the housing 1. A pressure roller 2014 is provided on the inside of the U-shaped frame 208. The bottom ends of the drive shaft 207 and the driven shaft 2016 extend into the housing 1 and are rotatably connected to the top of the U-shaped frame 208. Multiple stirring rods 2015 located inside the housing 1 are fixedly connected to the outside of both the drive shaft 207 and the driven shaft 2016.

[0026] Inside the housing 1, a support roller 2013 is rotatably connected to the pressure roller 2014. Inside the housing 1, a stirring shaft 2011 is rotatably connected to the support roller 2013. Multiple stirring rods 2012 are fixedly connected to the outside of the stirring shaft 2011. A top seat 202 is fixedly sleeved on the middle of the outside of the U-shaped rod 201. An electric push rod 203 is fixedly installed at the bottom of the top seat 202. The top of the lifting plate 2018 is fixed to the output end of the electric push rod 203. Two guide cylinders 2022 are symmetrically fixedly connected to the inner top wall of the housing 1. Guide columns 2023 are movably sleeved inside each of the two guide cylinders 2022. The bottom ends of the two guide columns 2023 are fixed to the top of the U-shaped frame 208.

[0027] The guide cylinder 2022 and guide column 2023 cooperate to limit and guide the U-shaped frame 208, so that the lifting plate 2018 can drive the U-shaped frame 208 to move accordingly when it is raised and lowered. Two L-shaped round rods 2019 are symmetrically fixedly connected to the inner side of the U-shaped frame 208. Slider 2020 is movably sleeved on the outer side of each of the two L-shaped round rods 2019. The pressure roller 2014 is rotatably connected between the two sliders 2020. The top of the two sliders 2020 is between the U-shaped frame 208 and the guide cylinder 2022. Springs 2021 are fixedly connected to each of the two springs 2021, which are respectively sleeved on the outside of the two L-shaped round rods 2019. The bottom of the lifting plate 2018 is rotatably connected to the rotating shaft 206. The rotating shaft 206 and the drive shaft 207 are connected by a conveyor belt 205. The bottom end of the rotating shaft 206 is fixedly connected to the bevel gear 209. One end of the stirring shaft 2011 extends to the outside of the box 1 and is fixedly connected to the bevel gear 2010. The bevel gear 2010 is compatible with the bevel gear 209.

[0028] When the electric push rod 203 is activated, the pressure roller 2014 and the support roller 2013 can squeeze the leather base, and at the same time, the bevel gear 1 209 and the bevel gear 2010 can mesh. When the drive motor 204 is activated, the stirring rod 2015 and the stirring rod 1 2012 can rotate to achieve stirring of the chemical liquid.

[0029] Specifically, by Figure 5 The limiting mechanism 3 includes a limiting ring 301 located outside the rotating shaft 206. A support plate 302 is fixedly connected between the limiting ring 301 and the housing 1. An annular groove 303 is provided on the inner side of the limiting ring 301. Multiple balls 304 that abut against the rotating shaft 206 are installed at equal angles on the inner side of the annular groove 303.

[0030] The rotating shaft 206 is limited and guided by the limiting ring 301 and the ball 304 to ensure the stability of the rotating shaft 206 during movement.

[0031] Working principle: First, start the electric push rod 203, which drives the lifting plate 2018 to slide down along the U-shaped round rod 201 and moves the U-shaped frame 208 down. At the same time, the pressure roller 2014 descends. When the pressure roller 2014 comes into contact with the top surface of the leather base, it continues to descend. At this time, the two sliders 2020 slide along the two L-shaped round rods 2019 respectively, and the two springs 2021 are deformed and push the leather base down until its bottom surface comes into contact with the support roller 2013. Under the action of the elastic force of the two springs 2021, the pressure roller 2014 keeps in close contact with the leather base at all times, thereby squeezing the leather base and expelling the air in the fiber gaps.

[0032] When both the pressure roller 2014 and the support roller 2013 are in contact with the leather substrate, bevel gear 1 209 meshes with bevel gear 2010. Then, the drive motor 204 is started, driving the drive shaft 207 to rotate. Since the two transmission gears 2017 mesh with each other, the driven shaft 2016 is driven to rotate, and the stirring rod 2015 is driven to rotate to stir the chemical liquid on the upper part of the leather substrate. When the drive shaft 207 rotates, the conveyor belt 205 drives the rotating shaft 206 to rotate. Since bevel gear 1 209 meshes with bevel gear 2010, the stirring shaft 2011 is driven to rotate, and the stirring rod 1 2012 is driven to rotate to stir the chemical liquid at the lower part of the leather substrate, avoiding the chemical liquid from stratifying and settling, and uneven concentration, and finally improving the impregnation effect of the leather substrate.

[0033] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments; based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A chemical impregnation apparatus for polyurethane leather, comprising a housing (1), characterized in that: The box (1) is provided with a squeezing and stirring mechanism (2), the squeezing and stirring mechanism (2) is provided with a limiting mechanism (3), the top of the box (1) is fixedly connected with a liquid inlet pipe (6), the bottom of the box (1) is fixedly connected with a liquid drain hopper (5), the bottom end of the liquid drain hopper (5) is fixedly connected with a liquid drain pipe (4), and both sides of the box (1) are provided with openings (8), and guide rollers (7) are rotatably connected in both openings (8). The extrusion mixing mechanism (2) includes a U-shaped rod (201) fixed to the top of the box (1), a lifting plate (2018) movably sleeved on the outside of the U-shaped rod (201), a drive motor (204) fixedly installed at the bottom of the lifting plate (2018), a driven shaft (2016) rotatably connected to the bottom of the lifting plate (2018), a drive shaft (207) fixedly connected to the drive motor (204), and transmission gears (2017) fixedly connected to the outside of both the drive shaft (207) and the driven shaft (2016). The two transmission gears (2017) mesh with each other. A U-shaped frame (208) is provided inside the box (1). 8) has a pressure roller (2014) on its inner side. The bottom ends of the drive shaft (207) and driven shaft (2016) extend into the box (1) and are rotatably connected to the top of the U-shaped frame (208). Multiple stirring rods (2015) located in the box (1) are fixedly connected to the outer sides of the drive shaft (207) and driven shaft (2016). A support roller (2013) located below the pressure roller (2014) is rotatably connected to the inside of the box (1). A stirring shaft (2011) located below the support roller (2013) is rotatably connected to the inside of the box (1). Multiple stirring rods (2012) are fixedly connected to the outer side of the stirring shaft (2011).

2. The chemical impregnation apparatus for polyurethane leather according to claim 1, characterized in that: A top seat (202) is fixedly sleeved on the middle of the outer side of the U-shaped rod (201), and an electric push rod (203) is fixedly installed at the bottom of the top seat (202). The top of the lifting plate (2018) is fixed to the output end of the electric push rod (203).

3. The chemical impregnation apparatus for polyurethane leather according to claim 1, characterized in that: Two guide cylinders (2022) are symmetrically fixedly connected to the inner top wall of the box (1). Guide columns (2023) are movably sleeved inside the two guide cylinders (2022). The bottom ends of the two guide columns (2023) are fixed to the top of the U-shaped frame (208).

4. The chemical impregnation apparatus for polyurethane leather according to claim 1, characterized in that: The inner side of the U-shaped frame (208) is symmetrically fixedly connected to two L-shaped round rods (2019). The outer sides of the two L-shaped round rods (2019) are movably sleeved with sliders (2020). The pressure roller (2014) is rotatably connected between the two sliders (2020). The top of the two sliders (2020) and the U-shaped frame (208) are fixedly connected with springs (2021). The two springs (2021) are respectively sleeved on the outer sides of the two L-shaped round rods (2019).

5. The chemical impregnation apparatus for polyurethane leather according to claim 1, characterized in that: The bottom of the lifting plate (2018) is rotatably connected to a rotating shaft (206), and a conveyor belt (205) is connected between the rotating shaft (206) and the drive shaft (207). A bevel gear (209) is fixedly connected to the bottom end of the rotating shaft (206), and one end of the stirring shaft (2011) extends to the outside of the box (1) and is fixedly connected to a bevel gear (2010). The bevel gear (2010) is compatible with the bevel gear (209).

6. The chemical impregnation apparatus for polyurethane leather according to claim 1, characterized in that: The limiting mechanism (3) includes a limiting ring (301) located outside the rotating shaft (206), a support plate (302) is fixedly connected between the limiting ring (301) and the housing (1), and an annular groove (303) is provided on the inner side of the limiting ring (301). Multiple balls (304) that abut against the rotating shaft (206) are installed at equal angles on the inner side of the annular groove (303).

Images