Chemical woven bag film coating device

Abstract

The utility model discloses a kind of chemical woven bag film coating devices, including workbench, film coating part and adjusting part: the film coating part is set in the top of workbench, the film coating part has the box body being set in the top of workbench, the box body side is rotatably provided with rotating stand a, the inside of rotating stand a is provided with film coating roller a, the film coating roller a is located in the inside of box body, the side of box body is rotatably provided with rotating stand b, the inside of rotating stand b is provided with film coating roller b, the film coating roller b is located in the inside of box body, rotating stand a and rotating stand b are X type cross rotary connection in the side of box body. The utility model is provided with film coating part and adjusting part, the rotation angle of rotating stand a and rotating stand b can be accurately controlled by adjusting part, so that the distance between film coating roller a and film coating roller b is flexibly adjusted, the film coating requirement of woven bag of different thickness is adapted, the applicability and film coating quality of device are improved.

Description

Technical Field

[0001] This utility model relates to the field of woven bag production technology, specifically a chemical woven bag coating device. Background Technology

[0002] A coating, also known as a paint film, is a solid, continuous film formed by one or more layers of paint applied to a substrate. A chemical woven bag coating device is a piece of equipment used to coat the surface of plastic woven bags with a layer of plastic film, designed to enhance the bags' moisture resistance, water resistance, tensile strength, and sealing performance. Its core principle is to uniformly laminate the plastic film onto the woven bag substrate through melt extrusion, coating, and cooling / setting processes.

[0003] Woven bags are products made primarily from polypropylene and polyethylene resins, which are extruded and stretched into flat filaments, then woven, coated, and cut. Coating is used to increase the waterproof and moisture-proof properties of the woven bags. However, woven bags are double-sided, and existing chemical woven bag coating equipment generally only allows for single-sided coating, requiring two separate operations: coating one side first and then the other. Furthermore, the fixed position of the coating rollers makes adjustment difficult, resulting in low coating efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a coating device for chemical woven bags, so as to solve the problem that the existing coating devices for chemical woven bags mentioned in the background art can generally only perform single-sided coating, that is, coating one side and then coating the other side, which requires two separate operations, resulting in low coating efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a chemical woven bag coating device, comprising a worktable, a coating section, and an adjustment section:

[0006] The coating unit is located on the top of the workbench and has a housing on the top of the workbench. A rotating frame a is rotatably mounted on the side of the housing, and a coating roller a is located inside the rotating frame a. The coating roller a is located inside the housing. A rotating frame b is rotatably mounted on the side of the housing, and a coating roller b is located inside the rotating frame b. The rotating frame a and rotating frame b are rotatably connected to the side of the housing in an X-shape. The rotating frame a and rotating frame b rotate to adjust the distance between the coating roller a and the coating roller b. An adjustment part is located on the top of the housing to adjust the rotation angle of the rotating frame a and rotating frame b.

[0007] By adopting the above technical solution, the rotation angle of rotating frame a and rotating frame b can be precisely controlled by the adjustment unit, thereby flexibly adjusting the distance between coating roller a and coating roller b to adapt to the coating requirements of woven bags of different thicknesses, and improving the applicability of the device and the coating quality.

[0008] Preferably, the coating section also has guide rollers arranged laterally and rotating inside the housing. The top and bottom of the housing are provided with nozzles, which are connected to an external extruder feeding device. The coating roller a and coating roller b are located between the two nozzles.

[0009] By adopting the above technical solution, the guide roller can ensure the smooth transport of the woven bag in the box, while the upper and lower nozzles can achieve double-sided coating. The coating rollers a and b are located between the nozzles to ensure the uniformity and adhesion of the coating.

[0010] Preferably, the coating part also has a rotating shaft disposed on both sides of the box body. The rotating frame a has a rotating groove a on its side, the rotating shaft is embedded in the rotating groove a and rotatably connected to the rotating frame a. The rotating frame b has a rotating groove b on its side, the rotating shaft is embedded in the rotating groove b and rotatably connected to the rotating frame b. The rotating frame a and the rotating frame b are arranged in an X-shape.

[0011] By adopting the above technical solution, the stable rotation of rotating frame a and rotating frame b can be achieved through the cooperation of rotating shaft with rotating groove a and rotating groove b, ensuring the reliability and synchronization of X-shaped cross structure, and making the spacing adjustment of coating roller a and coating roller b more precise and stable.

[0012] Preferably, the adjustment unit also has an adjustment frame disposed on the top of the housing, a power shaft is rotatably disposed on the top of the adjustment frame, a motor is disposed on the side of the adjustment frame, and the output end of the motor is connected to the power shaft.

[0013] By adopting the above technical solution, the power shaft can be rotated by a motor to provide a power source for the adjustment unit.

[0014] Preferably, the adjusting part also has an adjusting shaft that is vertically rotatably disposed inside the adjusting frame, a bevel tooth a is provided on the side of the power shaft, and a bevel tooth b is provided on the top of the adjusting shaft, the bevel tooth b being engaged with the bevel tooth a.

[0015] By adopting the above technical solution, the horizontal rotational motion of the power shaft can be converted into the vertical rotational motion of the adjustment shaft through the meshing of bevel teeth a and b, thereby changing the direction of power transmission and providing power for the subsequent adjustment mechanism.

[0016] Preferably, there are two adjusting shafts, and the side of the power shaft is provided with two bevel teeth a in the same direction, and the two bevel teeth b respectively mesh with the two bevel teeth a.

[0017] By adopting the above technical solution, the synchronous rotation of the two adjustment shafts can ensure the symmetry and consistency of the movement of slider a and slider b, thereby ensuring the synchronous adjustment of rotating frame a and rotating frame b and maintaining the central symmetry of coating roller a and coating roller b.

[0018] Preferably, the adjustment part also has sliders a and b that are vertically slidably disposed inside the adjustment frame, and the adjustment shaft passes vertically through sliders a and b and is nested and threadedly connected to sliders a and b.

[0019] By adopting the above technical solution, the rotation of the adjusting shaft can drive sliders a and b to slide in the vertical direction, converting rotational motion into linear motion, and providing an actuator for adjusting the angle of rotating frame a and rotating frame b.

[0020] Preferably, the coating part further includes a transmission rod a disposed on the side of the rotating frame a, the transmission rod a being slidably connected to the slider b, and the transmission rod b being disposed on the side of the rotating frame b being slidably connected to the slider a.

[0021] By adopting the above technical solution, the up-and-down movement of sliders a and b can drive transmission rods b and a respectively, thereby driving rotating frame b and rotating frame a to rotate in opposite directions, realizing symmetrical adjustment of the distance between coating rollers a and b, and ensuring the uniformity of coating thickness.

[0022] Preferably, the coating section also has grooves formed on both sides of the box body, and the two ends of the coating roller a and coating roller b are embedded in the grooves and slidably connected to the box body.

[0023] By adopting the above technical solution, the two ends of coating roller a and coating roller b can be guided and limited by the chute, ensuring that they maintain stable curved chute movement during the adjustment of the spacing.

[0024] Compared with the prior art, the beneficial effects of this utility model are: by providing a coating section and an adjustment section, coating operations can be performed on both sides of the woven bag by coating rollers a and b, and the rotation angle of rotating frame a and rotating frame b can be precisely controlled by the adjustment section, thereby flexibly adjusting the distance between coating rollers a and b to adapt to the coating requirements of woven bags of different thicknesses, and improving the applicability of the device and the coating quality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application;

[0026] Figure 2 This is a schematic diagram of the overall structure of this application;

[0027] Figure 3 This is a schematic cross-sectional view of the connection between the coating section and the adjustment section in this application;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of the adjustment section in this application;

[0029] Figure 5This is a schematic diagram of the box structure of this application;

[0030] Figure 6 This is a schematic diagram of the connection structure between rotating frame a and rotating frame b in this application.

[0031] In the diagram: 1. Workbench; 2. Coating section; 201. Box body; 202. Guide roller; 203. Nozzle; 204. Slide groove; 205. Rotating shaft; 206. Rotating frame a; 207. Rotating groove a; 208. Transmission rod a; 209. Coating roller a; 210. Rotating frame b; 211. Rotating groove b; 212. Transmission rod b; 213. Coating roller b; 3. Adjustment section; 301. Adjustment frame; 302. Power shaft; 303. Bevel gear a; 304. Motor; 305. Adjustment shaft; 306. Bevel gear b; 307. Slider a; 308. Slider b. Detailed Implementation

[0032] 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.

[0033] Example 1

[0034] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a technical solution: a chemical woven bag coating device, including a workbench 1, a coating section 2, and an adjustment section 3.

[0035] The coating section 2 is located on top of the workbench 1. A housing 201 is fixedly mounted on the top of the workbench 1. A rotating frame a206 is rotatably mounted on the side of the housing 201. A coating roller a209 is installed inside the rotating frame a206. The coating roller a209 is located inside the housing 201. A rotating frame b210 is rotatably mounted on the side of the housing 201. A coating roller b213 is installed inside the rotating frame b210. The rotating frame a206 and the rotating frame b210 are connected in an X-shaped cross-rotation. On the side of the housing 201, rotating frame a206 and rotating frame b210 rotate to adjust the distance between coating roller a209 and coating roller b213. Adjustment part 3 is set on the top of housing 201 to adjust the rotation angle of rotating frame a206 and rotating frame b210. The rotation angle of rotating frame a206 and rotating frame b210 can be precisely controlled by adjustment part 3, thereby flexibly adjusting the distance between coating roller a209 and coating roller b213 to meet the coating requirements of woven bags of different thicknesses, and improve the applicability of the device and the coating quality.

[0036] Example 2

[0037] Please see Figure 4 , Figure 5 and Figure 6 This embodiment provides a technical solution: a chemical woven bag coating device, including a coating section 2, a coating roller a209, and a coating roller b213.

[0038] Inside the housing 201, a guide roller 202 is arranged to rotate laterally. Spray nozzles 203 are provided at the top and bottom of the housing 201. The spray nozzles 203 are connected to an external extruder feeding device. Coating rollers a209 and b213 are located between the two spray nozzles 203. The guide rollers 202 can ensure the smooth transport of woven bags in the housing 201. At the same time, double-sided coating is achieved through the spray nozzles 203 arranged vertically. The location of coating rollers a209 and b213 between the spray nozzles 203 can ensure the uniformity and adhesion of the coating.

[0039] The coating section 2 also has rotating shafts 205 disposed on both sides of the housing 201. The rotating frame a206 has a rotating groove a207 on its side. The rotating shaft 205 is embedded in the rotating groove a207 and rotatably connected to the rotating frame a206. The rotating frame b210 has a rotating groove b211 on its side. The rotating shaft 205 is embedded in the rotating groove b211 and rotatably connected to the rotating frame b210. The rotating frame a206 and the rotating frame b210 are arranged in an X-shape. The stable rotation of the rotating frame a206 and the rotating frame b210 can be achieved by the cooperation of the rotating shaft 205 with the rotating grooves a207 and b211, ensuring the reliability and synchronization of the X-shaped cross structure, and making the spacing adjustment of the coating roller a209 and the coating roller b213 more precise and stable.

[0040] Slide grooves 204 are provided on both sides of the housing 201. The two ends of the coating roller a209 and coating roller b213 are embedded in the slide grooves 204 and slidably connected to the housing 201. The slide grooves 204 can guide and limit the two ends of the coating roller a209 and coating roller b213 to ensure that they maintain stable movement of the slide grooves 204 during the adjustment of the spacing.

[0041] Example 3

[0042] Please see Figure 4 , Figure 5 and Figure 6 This embodiment provides a technical solution: a chemical woven bag coating device, including an adjustment unit 3, a power shaft 302, and an adjustment shaft 305.

[0043] An adjustment frame 301 is fixedly installed on the top of the housing 201. The fixing method is an existing detachable fixing, such as bolt connection, buckle connection, etc. A power shaft 302 is horizontally rotatably installed on the top of the adjustment frame 301. A motor 304 is installed on the side of the adjustment frame 301. The output end of the motor 304 is connected to the power shaft 302. The motor 304 is a stepper motor. A stepper motor is a motor that converts electrical pulse signals into angular displacement or linear displacement. Its working principle is based on the interaction of electromagnetic induction and magnetic field. It achieves precise position and speed control by controlling the number and frequency of electrical pulses. The above is the existing technology and will not be elaborated further below. When selecting the model, its power should be selected to match the needs of the device to ensure that the object to be driven is driven. The power shaft 302 can be driven to rotate by the motor 304 to provide a power source for the adjustment part 3.

[0044] An adjusting shaft 305 is rotatably mounted inside the adjusting frame 301. A bevel tooth a303 is provided on the side of the power shaft 302, and a bevel tooth b306 is provided on the top of the adjusting shaft 305. The bevel tooth b306 meshes with the bevel tooth a303. The horizontal rotational motion of the power shaft 302 can be converted into the vertical rotational motion of the adjusting shaft 305 through the meshing of the bevel teeth a303 and b306, thereby changing the direction of power transmission and providing power for the subsequent adjusting mechanism. The adjusting shaft 305 is a bidirectional lead screw. A bidirectional lead screw is a special lead screw structure whose core feature is that it can achieve two opposite directions of movement on the same lead screw. The above is the prior art and will not be described in detail below.

[0045] Two adjusting shafts 305 are provided. Two bevel teeth a303 in the same direction are provided on the side of the power shaft 302. Two bevel teeth b306 are respectively meshed with the two bevel teeth a303. The two adjusting shafts 305 can rotate synchronously to ensure the symmetry and consistency of the movement of slider a307 and slider b308, thereby ensuring the synchronous adjustment of rotating frame a206 and rotating frame b210 and maintaining the central symmetry of coating roller a209 and coating roller b213.

[0046] Slider a307 and slider b308 are vertically slidably arranged inside the adjusting frame 301. The adjusting shaft 305 passes vertically through slider a307 and slider b308 and is nested and threadedly connected to slider a307 and slider b308. The rotation of the adjusting shaft 305 can drive slider a307 and slider b308 to slide in the vertical direction, converting the rotational motion into linear motion, and providing an actuator for adjusting the angle of rotating frame a206 and rotating frame b210.

[0047] A transmission rod a208 is provided on the side of the rotating frame a206, and the transmission rod a208 is slidably connected to the slider b308. A transmission rod b212 is provided on the side of the rotating frame b210, and the transmission rod b212 is slidably connected to the slider a307. The up and down movement of the sliders a307 and b308 can drive the transmission rods b212 and a208 respectively, thereby driving the rotating frames b210 and a206 to rotate in opposite directions, realizing the symmetrical adjustment of the distance between the coating rollers a209 and b213, and ensuring the uniformity of the coating thickness.

[0048] Working principle: First, the woven bag to be coated is smoothly conveyed into the box 201 through the guide roller 202. The motor 304 is started, which drives the bevel gear a303 to rotate through the power shaft 302, thereby driving the two bevel gears b306 to rotate synchronously, so that the two adjusting shafts 305 generate synchronous rotational motion. The rotation of the adjusting shaft 305 drives the threadedly connected sliders a307 and b308 to move in opposite directions in the vertical direction. The up-and-down movement of slider a307 drives the rotating frame b210 to rotate around the rotating shaft 205 via the transmission rod b212. At the same time, the movement of slider b308 drives the rotating frame a206 to rotate in the opposite direction via the transmission rod a208, thereby achieving precise adjustment of the distance between the coating rollers a209 and b213. During the adjustment process, the two ends of the coating rollers a209 and b213 slide smoothly along the slide groove 204 to ensure the stability of the movement trajectory. When the woven bag reaches the predetermined position, the nozzle 203 sprays molten plastic evenly onto the surface of the woven bag. The coating rollers a209 and b213 press the coating together at the adjusted distance to ensure uniform coating thickness and tight adhesion. After the entire coating process is completed, the finished woven bag continues to be conveyed to the next process.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coating device for chemical woven bags, characterized in that, include: Workbench; The coating section is located on the top of the workbench and has a box on the top of the workbench. A rotating frame a is rotatably mounted on the side of the box, and a coating roller a is installed inside the rotating frame a. The coating roller a is located inside the box. A rotating frame b is rotatably mounted on the side of the box, and a coating roller b is installed inside the rotating frame b. The rotating frame a and rotating frame b are rotatably connected to the side of the box in an X-shape. The rotating frame a and rotating frame b rotate to adjust the distance between the coating roller a and the coating roller b. An adjustment section is located on the top of the housing and is used to adjust the rotation angle between the rotating frame a and the rotating frame b.

2. The chemical woven bag coating device according to claim 1, characterized in that: The coating section also has guide rollers arranged laterally and rotating inside the housing. The top and bottom of the housing are equipped with nozzles, which are connected to an external extruder feeding device. The coating roller a and coating roller b are located between the two nozzles.

3. The chemical woven bag coating device according to claim 1, characterized in that: The coating section also has a rotating shaft disposed on both sides of the box body. The rotating frame a has a rotating groove a on its side, and the rotating shaft is embedded in the rotating groove a and rotatably connected to the rotating frame a. The rotating frame b has a rotating groove b on its side, and the rotating shaft is embedded in the rotating groove b and rotatably connected to the rotating frame b. The rotating frame a and the rotating frame b are arranged in an X-shape.

4. The chemical woven bag coating device according to claim 1, characterized in that: The adjustment unit also has an adjustment frame located on the top of the housing. A power shaft is rotatably mounted on the top of the adjustment frame, and a motor is mounted on the side of the adjustment frame. The output end of the motor is connected to the power shaft.

5. The chemical woven bag coating device according to claim 4, characterized in that: The adjustment unit also has an adjustment shaft that is vertically rotatably installed inside the adjustment frame. The side of the power shaft is provided with a bevel tooth a, and the top of the adjustment shaft is provided with a bevel tooth b, which meshes with the bevel tooth a.

6. The chemical woven bag coating device according to claim 5, characterized in that: The adjustment shaft is provided in two parts. The side of the power shaft is provided with two bevel teeth a in the same direction, and two bevel teeth b respectively mesh with the two bevel teeth a.

7. A chemical woven bag coating device according to claim 6, characterized in that: The adjustment unit also has sliders a and b that are vertically slidably disposed inside the adjustment frame, and the adjustment shaft passes vertically through sliders a and b and is nested and threadedly connected to sliders a and b.

8. The chemical woven bag coating device according to claim 7, characterized in that: The coating section also has a transmission rod a disposed on the side of the rotating frame a, the transmission rod a being slidably connected to the slider b, and the transmission rod b being disposed on the side of the rotating frame b being slidably connected to the slider a.

9. A chemical woven bag coating device according to claim 7, characterized in that: The coating section also has grooves on both sides of the box, and the two ends of the coating roller a and coating roller b are embedded in the grooves and slidably connected to the box.

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