A method for producing high abrasion and tensile strength plastic tarpaulin

Abstract

This invention discloses a method for producing high abrasion-resistant and tensile-resistant plastic tarpaulin, comprising the following steps: Step 1, placing raw materials into a mixer and heating and stirring evenly to obtain a paste; Step 2, coating the paste onto the outer surface of polyester canvas using a coating device; Step 3, welding plastic sheets using a fastening device's welding mechanism, and then attaching buckles using a pressing mechanism to complete the process. This invention relates to the field of plastic tarpaulin production technology. This method for producing high abrasion-resistant and tensile-resistant plastic tarpaulin uses a welding mechanism to weld plastic gaskets at the perforated areas of the plastic tarpaulin, forming an integral welded structure. This increases the thickness and tensile strength at this point, effectively increasing the tensile strength of the buckles. It allows for use in harsher environments such as windy weather, is less prone to damage, and the welding is convenient. It can automatically compress and fix the tarpaulin, moving synchronously, and the limiting mechanism can be quickly released after welding.

Description

Technical Field

[0001] This invention relates to the field of plastic tarpaulin production technology, specifically to a method for producing high abrasion-resistant and tensile-resistant plastic tarpaulin. Background Technology

[0002] Tarpaulin (or waterproof fabric) is a high-strength, flexible, and waterproof material, commonly used as canvas, polyurethane-coated polyester, or made from polyethylene plastics. Tarpaulins usually have sturdy grommets at the corners or edges for easy threading of ropes for binding, hanging, or covering.

[0003] The ultrasonic welding machine for threading ropes onto plastic tarpaulins described in patent number CN2763026Y has a poor effect on fixing the tarpaulin during use, and it is easy to cause interference to the surrounding environment during welding, thus reducing the quality of the finished product. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method for producing high abrasion-resistant and tensile-resistant plastic tarpaulin, thus solving the aforementioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for producing high abrasion-resistant and tensile-resistant plastic tarpaulin, comprising the following steps:

[0006] Step 1: Put the raw materials into a mixer and heat and stir until evenly mixed to obtain a paste;

[0007] Step 2: Apply the paste to the outer surface of the polyester canvas using a coating device;

[0008] Step 3: The plastic sheet is welded using the welding mechanism of the fastening equipment, and then the buckle is fastened using the pressing mechanism to complete the processing.

[0009] As a further aspect of the present invention: in step three, when welding is performed by the welding mechanism, the gasket is conveyed to the area below the negative pressure adsorption plate by the setting of the gasket conveyor belt.

[0010] As a further aspect of the present invention: in step three, the plastic tarpaulin is conveyed by the conveying wheel to the area below the ultrasonic welding joint, where the pad is adsorbed by the negative pressure adsorption plate, and then the lifting cylinder drives the ultrasonic welding joint and the negative pressure adsorption plate to descend, thereby welding the plastic tarpaulin and the pad.

[0011] As a further aspect of the present invention: during the welding process in step three, when the lifting cylinder drives the ultrasonic welding joint and the negative pressure adsorption plate to descend, the piston is pulled. The piston forms a negative pressure in the sleeve, drawing in the gas in the air push rod. At this time, the piston end of the air push rod retracts, causing the tarpaulin limiting frame to move downward to squeeze the tarpaulin for processing. After the welding is completed, when the lifting cylinder drives the ultrasonic welding joint and the negative pressure adsorption plate to rise, the piston is pulled. The piston forms a positive pressure in the sleeve, squeezing out the gas in the air push rod. At this time, the piston end of the air push rod extends, causing the tarpaulin limiting frame to move upward to cancel the squeezing of the tarpaulin.

[0012] As a further aspect of the present invention: during the welding process in step three, a water circulation pipe is connected to one side of the tarpaulin limiting frame. The tarpaulin is squeezed by the tarpaulin limiting frame to isolate the heat. The water circulation pipe keeps the tarpaulin limiting frame at a low temperature to prevent the edge of the tarpaulin from melting and being damaged due to high temperature during welding.

[0013] As a further aspect of the present invention: after the welding is completed, the product is snapped shut by a snapping mechanism and then output.

[0014] The fastening device includes a fixed machine base and a welding mechanism and a pressing mechanism mounted on the fixed machine base. The welding mechanism welds the plastic gasket to the perforated area of ​​the plastic tarpaulin, creating a seamless welded structure. This increases the thickness and tensile strength of the fastener, effectively increasing its tensile strength and enabling use in harsher environments such as windy weather. It is also less prone to damage. The device includes a fixed frame above the machine base, with a lifting cylinder fixedly connected to the top of the frame. An ultrasonic welding joint is fixedly connected to the bottom of the piston rod of the lifting cylinder. The ultrasonic waves emitted by the welding joint quickly weld the plastic gasket and the plastic tarpaulin together. The ultrasonic welding joint is formed as a single unit. A negative pressure adsorption plate is fixedly connected to the surface of the ultrasonic welding joint. One side of the negative pressure adsorption plate is connected to an external vacuum pump via a telescopic tube. During use, the vacuum pump applies negative pressure to the negative pressure adsorption plate to adsorb the plastic gasket onto the ultrasonic welding joint for fixation and welding. A receiving plate is fixedly connected to the top of the fixing machine. Conveying wheels are provided on the surface of the fixing machine. A pneumatic push rod is fixedly connected to the inner cavity of the receiving plate. A tarpaulin limiting frame is fixedly connected to the piston end of the pneumatic push rod. A water circulation pipe is connected to one side of the tarpaulin limiting frame. The tarpaulin is squeezed by the tarpaulin limiting frame to dissipate heat. The tarpaulin limiting frame is kept at a low temperature through a water circulation pipe to prevent the edges of the tarpaulin from melting and being damaged due to high temperatures during welding, resulting in better finished product quality. A sleeve is fixedly connected to the surface of the fixing frame, and a piston is slidably connected to the inner cavity of the sleeve. One end of the piston is fixedly connected to the top of the negative pressure adsorption plate. The top of the sleeve is connected to the air chamber of the air push rod through an air guide pipe. When the lifting cylinder drives the ultrasonic welding joint and the negative pressure adsorption plate to descend, it pulls the piston, creating a negative pressure inside the sleeve, drawing in the gas from the air push rod. At this time, the piston end of the air push rod retracts, causing the tarpaulin limiting frame to move downwards and squeeze the tarpaulin. After the ultrasonic welding joint and negative pressure adsorption plate are raised by the lifting cylinder, the piston is pulled. The piston forms positive pressure in the sleeve, squeezing out the gas in the air push rod. At this time, the piston end of the air push rod extends and drives the tarpaulin limiting frame to move upward to cancel the squeezing of the tarpaulin. It can automatically squeeze and fix the tarpaulin. The synchronous movement can quickly release the limiting after the welding is completed. The surface of the receiving plate has a slot. The slot has a gasket conveyor belt. The gasket conveyor belt transports the gasket to the bottom of the negative pressure adsorption plate, where it is adsorbed by the negative pressure adsorption plate. The material can be fed continuously.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This invention uses a welding mechanism to weld plastic gaskets to the perforated areas of plastic tarpaulins, making them an integral welded structure. This increases the thickness and tensile strength of the area, effectively increasing the tensile strength of the buckles. This allows for use in harsher environments, such as windy weather, without easily being damaged. Furthermore, the welding is convenient, automatically squeezing and fixing the tarpaulin, moving synchronously, and the limit can be quickly released after welding is completed.

[0017] 2. In this invention, the tarpaulin is compressed by the tarpaulin limiting frame to isolate heat, and the tarpaulin limiting frame is kept at a low temperature by the water circulation pipe to prevent the edge of the tarpaulin from melting and being damaged due to high temperature during welding, resulting in better quality of finished product. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the buckle-fastening device of the present invention;

[0019] Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the structure of the tarpaulin limiting frame of the present invention.

[0021] In the diagram: 2. Fixed frame; 3. Lifting cylinder; 4. Ultrasonic welding joint; 5. Fixed machine base; 6. Receiving plate; 7. Conveying wheel; 8. Negative pressure adsorption plate; 9. Telescopic pipe; 10. Sleeve; 11. Piston; 12. Empty trough; 13. Gasket conveyor belt; 14. Air push rod; 15. Air guide pipe; 16. Tarpaulin limiting frame; 17. Pressing mechanism; 18. Water circulation pipe. Detailed Implementation

[0022] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0023] Please see Figure 1-3 This invention provides a technical solution: a method for producing a high abrasion-resistant and tensile-resistant plastic tarpaulin, comprising the following steps:

[0024] Step 1: Put the raw materials into a mixer and heat and stir until evenly mixed to obtain a paste;

[0025] Step 2: Apply the paste to the outer surface of the polyester canvas using a coating device;

[0026] Step 3: The plastic sheet is welded using the welding mechanism of the fastening equipment, and then the buckle is fastened by the pressing mechanism 17 to complete the processing.

[0027] In step three, when welding is performed by the welding mechanism, the gasket is conveyed to the area below the negative pressure adsorption plate 8 by the gasket conveyor belt 13.

[0028] In step three, the plastic tarpaulin is conveyed by the conveyor wheel 7 and transported to the area below the ultrasonic welding joint 4. The pad is then adsorbed by the negative pressure adsorption plate 8. Then, the lifting cylinder 3 drives the ultrasonic welding joint 4 and the negative pressure adsorption plate 8 to descend, thereby welding the plastic tarpaulin and the pad.

[0029] In step three, during the welding process, when the lifting cylinder 3 drives the ultrasonic welding joint 4 and the negative pressure adsorption plate 8 to descend, it pulls the piston 11. The piston 11 forms a negative pressure in the sleeve 10, drawing in the gas in the air push rod 14. At this time, the piston end of the air push rod 14 retracts, causing the tarpaulin limiting frame 16 to move downwards and squeeze the tarpaulin for processing. After the welding is completed, when the lifting cylinder 3 drives the ultrasonic welding joint 4 and the negative pressure adsorption plate 8 to rise, it pulls the piston 11. The piston 11 forms a positive pressure in the sleeve 10, squeezing out the gas in the air push rod 14. At this time, the piston end of the air push rod 14 extends, causing the tarpaulin limiting frame 16 to move upwards and cancel the squeezing of the tarpaulin.

[0030] During the welding process in step three, a water circulation pipe 18 is connected to one side of the tarpaulin limiting frame 16. The tarpaulin is squeezed by the tarpaulin limiting frame 16 to isolate the heat. The water circulation pipe 18 keeps the tarpaulin limiting frame 16 at a low temperature to prevent the edge of the tarpaulin from melting and being damaged due to high temperature during welding.

[0031] After welding is completed, the product is snapped shut by the snapping mechanism 17 and then output.

[0032] The fastening device includes a fixed base 5 and a welding mechanism and a pressing mechanism 17 mounted on the fixed base 5. The welding mechanism welds the plastic gasket to the perforated area of ​​the plastic tarpaulin, creating a seamless welded structure. This increases the thickness and tensile strength of the fastener, effectively increasing its tensile strength and enabling use in harsher environments such as windy weather, making it less prone to damage. The device also includes a fixed frame 2 mounted on the fixed base 5. A lifting cylinder 3 is fixedly connected to the top of the fixed frame 2, and an ultrasonic welding joint 4 is fixedly connected to the bottom of the piston rod of the lifting cylinder 3. The ultrasonic waves emitted by the ultrasonic welding joint 4 quickly weld the plastic gasket and the plastic tarpaulin together. A negative pressure adsorption plate 8 is fixedly connected to the surface of connector 4. One side of the negative pressure adsorption plate 8 is connected to an external vacuum pump through a telescopic tube 9. In use, the vacuum pump applies negative pressure to the negative pressure adsorption plate 8 to adsorb the plastic gasket onto the ultrasonic welding joint 4 for fixation and welding. A receiving plate 6 is fixedly connected to the top of the fixing machine base 5. A conveying wheel 7 is provided on the surface of the fixing machine base 5. An air push rod 14 is fixedly connected to the inner cavity of the receiving plate 6. A tarpaulin limiting frame 16 is fixedly connected to the piston end of the air push rod 14. A water circulation pipe 18 is connected to one side of the tarpaulin limiting frame 16. The tarpaulin is squeezed by the tarpaulin limiting frame 16 to isolate heat, and the tarpaulin is kept in place by the water circulation pipe 18. The low temperature of the limiting frame 16 prevents the edge of the tarpaulin from melting and being damaged due to high temperature during welding, resulting in better finished product quality. A sleeve 10 is fixedly connected to the surface of the fixing frame 2, and a piston 11 is slidably connected to the inner cavity of the sleeve 10. One end of the piston 11 is fixedly connected to the top of the negative pressure adsorption plate 8. The top of the sleeve 10 is connected to the air chamber of the air push rod 14 through the air guide pipe 15. When the lifting cylinder 3 drives the ultrasonic welding joint 4 and the negative pressure adsorption plate 8 to descend, it pulls the piston 11, creating a negative pressure inside the sleeve 10, drawing in the gas from the air push rod 14. At this time, the piston end of the air push rod 14 retracts, causing the tarpaulin limiting frame 16 to move downwards, compressing the tarpaulin and performing a pressing process. After the welding is completed, when the lifting cylinder 3 drives the ultrasonic welding joint 4 and the negative pressure adsorption plate 8 to rise, it pulls the piston 11. The piston 11 forms a positive pressure in the sleeve 10, squeezing out the gas in the air push rod 14. At this time, the piston end of the air push rod 14 extends and drives the tarpaulin limiting frame 16 to move upward to cancel the squeezing of the tarpaulin. It can automatically squeeze and fix the tarpaulin and move synchronously. After the welding is completed, the limiting can be quickly released. The surface of the receiving plate 6 is provided with a slot 12. The slot 12 is filled with a pad conveyor belt 13. Through the setting of the pad conveyor belt 13, the pad is transported to the bottom of the negative pressure adsorption plate 8 and adsorbed by the negative pressure adsorption plate 8. The material can be fed continuously.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A process for the production of a high abrasion, high tensile plastic tarpaulin characterised in that: Includes the following steps: Step 1: Put the raw materials into a mixer and heat and stir until evenly mixed to obtain a paste; Step 2: Apply the paste to the outer surface of the polyester canvas using a coating device; Step 3: The plastic sheet is welded by the welding mechanism of the buckle-fastening device, and then the buckle is fastened by the buckle-fastening mechanism (17) to complete the processing; In step 3, when the welding is carried out by the welding mechanism, the pad is transported to the bottom of the negative pressure adsorption plate (8) by the setting of the pad conveyor belt (13); In step 3, the plastic tarpaulin is transported by the conveyor wheel (7) and transported to the bottom of the ultrasonic welding joint (4). The pad is adsorbed by the negative pressure adsorption plate (8), and then the lifting cylinder (3) drives the ultrasonic welding joint (4) and the negative pressure adsorption plate (8) to descend, and welds the plastic tarpaulin and the pad; When welding is carried out in step 3, when the lifting cylinder (3) drives the ultrasonic welding joint (4) and the negative pressure adsorption plate (8) to descend, the piston (11) is pulled. The piston (11) forms a negative pressure in the sleeve (10) and draws in the gas in the air push rod (14). At this time, the air push rod (14) When the piston retracts, it drives the tarpaulin limiting frame (16) to move downward to squeeze the tarpaulin and process it. After the welding is completed, when the lifting cylinder (3) drives the ultrasonic welding joint (4) and the negative pressure adsorption plate (8) to rise, it pulls the piston (11). The piston (11) forms a positive pressure in the sleeve (10) and squeezes out the gas in the air push rod (14). At this time, the piston end of the air push rod (14) extends and drives the tarpaulin limiting frame (16) to move upward to cancel the squeezing of the tarpaulin. When welding is carried out in step three, a water circulation pipe (18) is connected to one side of the tarpaulin limiting frame (16). The tarpaulin is squeezed by the tarpaulin limiting frame (16) to isolate the heat. The tarpaulin limiting frame (16) is kept at a low temperature by the water circulation pipe (18) to prevent the edge of the tarpaulin from melting and being damaged due to high temperature during welding. After the welding is completed, the tarpaulin is snapped by the snapping mechanism (17) and then output.

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