Hot pressing method of tent cloth

Abstract

The invention relates to a hot-pressing method of tent cloth, which comprises the following steps: after a first folding edge of a main tent cloth is formed and a second folding edge of a side tent cloth is formed, the upper edge of the side tent cloth is bent downwards and inwards by arranging the second folding edge when the outer side surface of the main tent cloth is positioned above the inner side surface and the inner side surface of the side tent cloth is positioned above the outer side surface; in the bending part, the outer side surface of the side tarpaulin is positioned above the inner side surface, so that the inner side surface of the side tarpaulin is in contact and hot-pressed with the outer side surface of the main tarpaulin, the forming processing of hot-pressing of the first folding edge, the second folding edge, the upper edge of the side tarpaulin and the main tarpaulin is facilitated, and the production efficiency is improved; according to the scheme, when the side tarpaulin and the main tarpaulin are hydraulically placed in use, the pulling force borne by the side tarpaulin and the main tarpaulin is shared by the whole hot-pressing surface, so that the connecting strength of the side tarpaulin and the main tarpaulin is enhanced.

Description

Technical Field

[0001] The invention relates to the field of hot pressing of tent tarpaulins, and in particular to a hot pressing method of tent tarpaulins. Background Art

[0002] Tarpaulin (or waterproof cloth) is a waterproof material with high strength, good toughness and softness. Therefore, tarpaulin has waterproof and mildew-proof functions and is widely used in our lives. For example, it is used in cargo transportation such as trucks, trains, and ships, or used as a cover for stacked objects in open warehouses at stations, docks, seaports, and airports, or used as various tents, such as military tents, construction tents, folding tents, etc. Each tent is made of different materials and has different effects in use. Some have thick materials and are suitable for harsh living environments, some are rain and snow proof, and some are sunshade.

[0003] Currently, there is a tent that includes a main tarpaulin and a side tarpaulin heat-sealed to the edge of the top surface of the main tarpaulin. The edge of the main tarpaulin is provided with a first folded edge bent inwardly, a draw rope is provided in the first folded edge, and a through hole is opened. A support tube for supporting the tent is provided on the outer side of the first folded edge. The draw rope connects the support tube to the tarpaulin. At this time, the side tarpaulin extends downward from above the support tube, bypasses the support tube, and a second folded edge bent inwardly is provided at the lower edge of the side tarpaulin away from the main tarpaulin. The upper edge of the side tarpaulin is heat-sealed to the main tarpaulin, that is, at the upper edge of the side tarpaulin, the inner side of the side tarpaulin is heat-sealed to the outer side of the main tarpaulin.

[0004] During the processing of this kind of tent, the hot pressing process of the first folded edge, the second folded edge, the upper edge of the side tarpaulin and the main tarpaulin, as well as the adjustment of the front and back sides of the main tarpaulin and the side tarpaulin during hot pressing, makes the hot pressing of the entire tent tarpaulin a very troublesome process, which greatly reduces the production efficiency.

[0005] The Chinese patent with application number CN201821715307.X discloses a tarpaulin production line, but the production line cannot meet the needs of this production. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a method for hot pressing a tent tarpaulin, which facilitates the hot pressing molding of a first folding edge, a second folding edge, an upper edge of a side tarpaulin and a main tarpaulin, thereby improving production efficiency.

[0007] The present invention is realized by the following technical scheme, a method for hot pressing a tent tarpaulin, comprising the following steps: a. Unwind the main tarpaulin and the side tarpaulin and transfer them backwards; b. After the main tarpaulin is hot-pressed by the third hot-pressing device, the first folded edge is formed and the main tarpaulin is conveyed to the second hot-pressing device. At this time, the outer side of the main tarpaulin is located above the inner side, and the first folded edge is located below the inner side of the main tarpaulin; c. After the side tarpaulin passes through the first hot pressing device, a second folded edge is formed. At this time, the outer side surface of the side tarpaulin is located below the inner side surface. The side tarpaulin continues to move backwards. Under the guidance of the second bending device, the upper edge of the side tarpaulin is bent downward and inward, that is, at the bending part, the outer side surface is located above the inner side surface. Then the side tarpaulin also enters the second hot pressing device; d. In the second hot pressing device, the side tarpaulin is located above the main tarpaulin, the upper edge of the side tarpaulin is located between the first folded edge and the second folded edge, and the outer side surface of the bent portion of the side tarpaulin is hot pressed with the outer side surface of the tarpaulin, so that the main tarpaulin and the side tarpaulin are hot pressed and connected to form a whole tarpaulin; e. After passing through the second hot pressing device, the entire tarpaulin enters the punching device for punching and then is rolled up. When the present invention is in use, after the first folded edge of the main tarpaulin is formed and the second folded edge of the side tarpaulin is formed, the outer side surface of the main tarpaulin is located above the inner side surface, and the inner side surface of the side tarpaulin is located above the outer side surface. By setting the second folded edge, the upper edge of the side tarpaulin is bent downward and inward, that is, at the bent portion, the outer side surface of the side tarpaulin is located above the inner side surface, so that the inner side surface of the side tarpaulin is in contact with the outer side surface of the main tarpaulin for hot pressing, thereby facilitating the hot pressing molding process of the first folded edge, the second folded edge, the upper edge of the side tarpaulin and the main tarpaulin, thereby improving production efficiency; in this solution, after the side tarpaulin and the main tarpaulin are hot-pressed, when in use, the tension borne by the side tarpaulin and the main tarpaulin is shared by the entire hot pressing surface, thereby enhancing the connection strength between the side tarpaulin and the main tarpaulin.

[0008] Preferably, a first steering roller group and a second steering roller group are respectively provided in front and rear of the third hot pressing device. When the main tarpaulin is unrolled, the outer side surface of the main tarpaulin is located above the inner side surface. After the main tarpaulin passes around a number of conveying rollers, it passes around the second steering roller group and is conveyed forward into the third hot pressing device. After the main tarpaulin passes through the third hot pressing device, it moves forward and passes around the first steering roller group, and is conveyed backward into the second hot pressing device.

[0009] When this preferred solution is in use, when entering the second heat pressing device, the inner side of the main tarpaulin is located below the outer side, but when the first folded edge is heat pressed, the inner side of the main tarpaulin needs to be located above the outer side, so the main tarpaulin needs to be flipped once, and if the inner side of the main tarpaulin is located above the outer side when unrolling, more steering rollers or space are required to adjust the direction of the main tarpaulin. This solution realizes simple and quick flipping, steering, and heat pressing of the first folded edge of the main tarpaulin by setting the positions of the unwinding of the main tarpaulin, the first steering roller group, the second steering roller group, and the third heat pressing device.

[0010] Preferably, when the side tarpaulin is unrolled, the outer side surface of the side tarpaulin is located below the inner side surface. After the side tarpaulin passes around a number of guide rollers, it is guided by the first bending device so that the side tarpaulin is away from the edge of the first folded edge, i.e., the lower edge, and is bent upward and inward, and is hot-pressed by the first hot pressing device to form a second folded edge.

[0011] In this preferred solution, the outer side of the side tarpaulin is arranged below the inner side when the side tarpaulin is unrolled, so as to facilitate the formation of the second folded edge by hot pressing. Preferably, before the whole tarpaulin is thermoformed, the side tarpaulin is located above the main tarpaulin.

[0012] When the preferred solution is in use, the side tarpaulin and the main tarpaulin are separated up and down, thereby avoiding interference between the side tarpaulin and the main tarpaulin. At the same time, since the main tarpaulin needs to be located below the side tarpaulin during heat pressing in the second heat pressing device, interference between the main tarpaulin and the side tarpaulin when entering the second heat pressing device is also avoided.

[0013] Preferably, the second bending device includes a bending plate, a support rod fixed to the bending plate and supporting the side tarpaulin, and an adjustment structure connecting the bending plate and the bracket. The bending plate is provided with a V-shaped bending hole for the side tarpaulin to pass through, and the height of the inner opening of the bending hole is flush with the top surface of the support rod.

[0014] The preferred solution provides a guiding function for the upper and lower edges of the side tarpaulin when they are bent by providing the bending holes.

[0015] Preferably, the adjustment structure includes a horizontal plate with a first long hole, the horizontal plate is bolted to the bracket, a vertical plate is fixed to the horizontal plate, the vertical plate is provided with threaded holes arranged along the height direction and passing through the vertical plate, the bent plate is provided with a second long hole extending along the height defense line, and a bolt threadedly connected to the threaded hole is passed through the second long hole.

[0016] This preferred solution facilitates adjustment of the position of the bending plate along the width direction of the main tarpaulin by means of the provision of the transverse plate and the first long hole, and facilitates adjustment of the position of the bending plate in the height direction by means of the provision of the second long hole and the vertical plate.

[0017] Preferably, the system for implementing the hot pressing method includes, arranged in sequence from front to back, a unwinding device, a first bending device, a first hot pressing device, a second steering roller group, a second bending device, a second hot pressing device, a third hot pressing device, a main bending device, a second steering roller group, a punching device, and a winding device, wherein the first steering roller group is located below the second hot pressing device, and the second steering roller group is located below the third hot pressing device.

[0018] This preferred solution facilitates the hot pressing of the main tarpaulin and the side tarpaulin, and the one-time forming of the first folded edge and the second folded edge through the system setting. Preferably, a walking plate extending along the width direction of the main tarpaulin and located below the first hot pressing device is provided between the first bending device and the unwinding device, and a conveying roller for the main tarpaulin and the side tarpaulin to pass around is provided below the walking plate.

[0019] This preferred solution facilitates the walking of the staff through the provision of the walking board, thereby facilitating the maintenance of the equipment.

[0020] The beneficial effects of the present invention are as follows: after the first folded edge of the main tarpaulin is formed and the second folded edge of the side tarpaulin is formed, the outer side surface of the main tarpaulin is located above the inner side surface, and the inner side surface of the side tarpaulin is located above the outer side surface. By setting the second folded edge, the upper edge of the side tarpaulin is bent downward and inward, that is, at the bent portion, the outer side surface of the side tarpaulin is located above the inner side surface, so that the inner side surface of the side tarpaulin is in contact with the outer side surface of the main tarpaulin for hot pressing, thereby facilitating the hot pressing molding process of the first folded edge, the second folded edge, the upper edge of the side tarpaulin and the main tarpaulin, thereby improving production efficiency; When entering the second hot pressing device, the inner side of the main tarpaulin is located below the outer side, but when the first folded edge is hot pressed, the inner side of the main tarpaulin needs to be located above the outer side, so the main tarpaulin needs to be turned over once, and if the inner side of the main tarpaulin is located above the outer side when unrolling, more steering rollers or space are required to turn the main tarpaulin. This solution realizes simple and fast turning and steering of the main tarpaulin and hot pressing of the first folded edge by setting the positions of the main tarpaulin unrolling, the first steering roller group, the second steering roller group and the third hot pressing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 The usage status diagram of the main tarpaulin and the side tarpaulin; Figure 3 It is a partial left view schematic diagram of the main tarpaulin after being hot-pressed by the third hot-pressing device; Figure 4 A partial right view of the main tarpaulin after it passes around the first adjusting roller group; Figure 5 It is a right side schematic diagram after the first folding edge of the side tarpaulin is formed; Figure 6 It is a right side view schematic diagram of the main tarpaulin and the side tarpaulin during heat pressing; Figure 7 is a right side schematic view of the second bending device; Figure 8 is a top view schematic diagram of a first bending device; Fig. 9 A diagram showing the hot pressing of the outer side of the side tarpaulin and the outer side of the main tarpaulin in use; Fig.10 It is a schematic diagram of the positions of the side tarpaulin and the main tarpaulin when the first folding edge is located on the hot pressing surface and the second folding edge; As shown in the figure: 1. The first hot pressing device, 2. The second hot pressing device, 3. The third hot pressing device, 4. The tensioning device, 5. The punching device, 6. The winding device, 7. The second steering roller group, 8. The first steering roller group, 9. The side unwinding roller, 10. The main unwinding roller, 11. The first bending device, 12. The second bending device, 13. The walking board, 14. The main tarpaulin, 15. The side tarpaulin, 16. The inner side of the main tarpaulin, 17. The outer side of the main tarpaulin, 18. The inner side of the side tarpaulin, 19. The outer side of the side tarpaulin, 21. The first folding edge, 22. The second folding edge, 23. The hot pressing surface, 24. The horizontal plate, 25. The second long hole, 26. The bending hole, 27. The support rod, 28. The bending plate, 29. The vertical plate. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0023] Refer to the attached Figure 1-8 The present invention provides a method for hot pressing a tent tarpaulin. The system for implementing the method includes an unwinding device, a first bending device 11, a first hot pressing device 1, a second steering roller group 7, a second bending device 12, a second hot pressing device 2, a third hot pressing device 3, a main bending device, a second steering roller group 7, a tensioning device 4, a punching device 5, and a winding device 6, which are arranged in sequence from front to back. The first steering roller group 8 is located below the second hot pressing device 2, and the second steering roller group 7 is located below the third hot pressing device 3.

[0024] The unwinding device includes a main unwinding roller 10 and a side unwinding roller 9 for respectively unwinding the main tarpaulin and the side tarpaulin. The main unwinding roller 10 is located behind the side unwinding roller 9. A walking plate 13 extending along the width direction of the main tarpaulin and located below the first hot pressing device 1 is also provided between the first bending device 11 and the unwinding device. A conveying roller for the main tarpaulin and the side tarpaulin to bypass is provided below the walking plate 13.

[0025] The first bending device 11 and the second bending device 12 have the same structure, and both include a bending plate 28, a support rod 27 fixed to the bending plate 28 and supporting the side tarpaulin, and an adjustment structure connecting the bending plate 28 and the bracket. The bending plate 28 is provided with a V-shaped bending hole 26 for the side tarpaulin to pass through. The side of the bending plate 28 connected to the support rod 27 is the first side of the bending plate 28. The bending hole 26 includes a first perforation extending axially along the support rod 27, and a second perforation arranged obliquely. The first perforation extends to the first side surface, and the second perforation is located directly below the first perforation. The second perforation extends obliquely upward and away from the first side surface. An end of the second perforation away from the first side surface is connected to an end of the first perforation away from the inner side surface, thereby forming a V-shape. The inner opening of the bending hole 26 is the connecting port between the first perforation and the first side surface, and its height is flush with the top surface of the support rod 27. The inner angle of the bending hole 26 is the angle between the first perforation and the second perforation, which determines the bending angle of the side tarpaulin.

[0026] Since the first bending device 11 and the second bending device 12 bend different edges of the side tarpaulin, the position and use direction of the bending plate 28 need to be properly adjusted during use.

[0027] The adjustment structure includes a horizontal plate 24 with a first long hole, the horizontal plate 24 is bolted to the bracket, a vertical plate 29 is fixed to the horizontal plate 24, the vertical plate 29 is provided with threaded holes arranged along the height direction and passing through the vertical plate 29, the bent plate 28 is provided with a second long hole 25 extending along the height defense line, and a bolt threadedly connected to the threaded hole is passed through the second long hole 25.

[0028] The first hot pressing device 1, the second hot pressing device 2, the third hot pressing device 3, the main bending device, the punching device 5, the tensioning device 4, and the winding device 6 are all prior art, and the third hot pressing device 3 is also provided with a guide tube for guiding the pull rope into the first folded edge, and the guide tube is also prior art.

[0029] The steering roller set includes two rotating rollers arranged along the height direction.

[0030] A method for hot pressing a tent tarpaulin comprises the following steps: a. Unwind the main tarpaulin and the side tarpaulin backwards, and make the outer side surface 17 of the main tarpaulin above the inner side surface; the outer side surface 19 of the side tarpaulin is below the inner side surface, and at the same time make the side tarpaulin above the main tarpaulin and inside the edge of the main tarpaulin; b. The main tarpaulin is conveyed backwards by bypassing a plurality of conveying rollers from below, and then conveyed forwards after passing through the second steering roller group. At this time, the outer side surface 17 of the main tarpaulin is located below the inner side surface, and under the guidance of the main bending device, the edge of the main tarpaulin is bent upward and inwards, and the first folded edge 21 is formed under the heat pressing of the third hot pressing device 3. When the main tarpaulin moves forward to the front of the second hot pressing device 2, it bypasses the first steering roller group and then moves backwards into the second hot pressing device 2. At this time, the outer side surface 17 of the main tarpaulin is located above the inner side surface; c. At the same time, after the side tarpaulin passes over a number of guide rollers, it is guided by the first bending device 11 so that the side tarpaulin is away from the edge of the first folded edge, i.e., the lower edge, and is bent upward and inward. After being hot-pressed by the first hot-pressing device 1, a second folded edge 22 is formed. The side tarpaulin continues to move backward, and under the guidance of the second bending device 12, the upper edge of the side tarpaulin is bent downward and inward, i.e., at the bending portion, the outer side surface is located above the inner side surface, and then the side tarpaulin also enters the second hot-pressing device 2; d. In the second hot pressing device 2, the side tarpaulin is located above the main tarpaulin, the upper edge of the side tarpaulin is located between the first folded edge and the second folded edge, and the inner side surface of the bent portion of the side tarpaulin is hot pressed with the outer side surface of the tarpaulin, so that the main tarpaulin and the side tarpaulin are hot pressed and connected to form a whole tarpaulin; e. After passing through the second hot pressing device 2, the entire tarpaulin enters the punching device 5 for punching and is then rolled up. In this solution, the first fold is the heat-pressed connection between the inner side 16 of the main tarpaulin after the edge of the main tarpaulin is bent, and the second fold is the heat-pressed connection between the inner side of the side tarpaulin after the lower edge of the side tarpaulin is bent. The upper and lower edges of the side tarpaulin are based on the attached Figure 2 , where the upper edge is heat-sealed to the main tarpaulin and the lower edge forms a second fold.

[0031] In this embodiment of the present invention, when the side tarpaulin and the main tarpaulin are hydraulically placed for use, the tension borne by the side tarpaulin and the main tarpaulin is shared by the entire hot pressing surface 23, thereby enhancing the connection strength between the side tarpaulin and the main tarpaulin.

[0032] See attached Fig. 9 The arrow direction is the direction of tension. When the outer side surface 19 of the side tarpaulin and the outer side surface 17 of the main tarpaulin are heat-pressed, when the side tarpaulin is stretched downward around the heat-pressing surface 23, the edge of the heat-pressing surface 23, that is, point A in the figure, will be subjected to tension and will be torn first, so the connection strength between the side tarpaulin and the main tarpaulin is low.

[0033] See attached Fig.10 , when the second hot pressing device 2 is hot pressing, when the first folded edge is located at the hot pressing surface 23 and the second folded edge, the inner side surface 18 of the side tarpaulin is located below the outer side surface, and the second folded edge is located below, so it is not convenient to process the second folded edge, or the side tarpaulin needs to be adjusted and flipped, which will also increase the equipment cost. Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or using the existing technology, which will not be repeated here; the above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that the changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A method for hot pressing a tent tarpaulin, characterized in that: The following steps are involved: a. Unwind the main tarpaulin and the side tarpaulin and transfer them backwards; b. After the main tarpaulin is hot-pressed by the third hot-pressing device (3), a first folded edge (21) is formed, and the main tarpaulin is conveyed to the second hot-pressing device (2). At this time, the outer side surface (17) of the main tarpaulin is located above the inner side surface, and the first folded edge is located below the inner side surface of the main tarpaulin; c. After the side tarpaulin passes through the first hot pressing device (1), a second folded edge (22) is formed. At this time, the outer side surface (19) of the side tarpaulin is located below the inner side surface. The side tarpaulin continues to move backwards and, under the guidance of the second bending device (12), the upper edge of the side tarpaulin is bent downward and inward, that is, at the bent portion, the outer side surface is located above the inner side surface. Then, the side tarpaulin also enters the second hot pressing device (2); d. In the second hot pressing device (2), the side tarpaulin is located above the main tarpaulin, the upper edge of the side tarpaulin is located between the first folded edge and the second folded edge, and the outer side surface of the bent portion of the side tarpaulin is hot pressed with the outer side surface of the tarpaulin, so that the main tarpaulin and the side tarpaulin are hot pressed and connected to form a whole tarpaulin; e. After passing through the second hot pressing device (2), the entire tarpaulin enters the punching device (5) for punching and is then rolled up.

2. The hot pressing method of tent tarpaulin according to claim 1, characterized in that: A first steering roller group (8) and a second steering roller group (7) are respectively provided in front and rear of the third hot pressing device (3). When the main tarpaulin is unrolled, the outer side surface (17) of the main tarpaulin is located above the inner side surface. After the main tarpaulin passes through a plurality of conveying rollers, it passes through the second steering roller group (7) and is conveyed forward into the third hot pressing device (3). After the main tarpaulin passes through the third hot pressing device (3), it moves forward and passes through the first steering roller group (8), and is conveyed backward into the second hot pressing device (2).

3. The hot pressing method of tent tarpaulin according to claim 1, characterized in that: When the side tarpaulin is unrolled, the outer side surface (19) of the side tarpaulin is located below the inner side surface. After the side tarpaulin passes over a plurality of guide rollers, it is guided by the first bending device (11) so that the side tarpaulin is away from the edge of the first folded edge, i.e., the lower edge, and is bent upward and inward, and is hot-pressed by the first hot-pressing device (1) to form a second folded edge.

4. The hot pressing method of tent tarpaulin according to claim 1, characterized in that: The side tarpaulins are placed on top of the main tarpaulin before the entire tarpaulin is thermoformed.

5. The method for hot pressing a tent tarpaulin according to claim 1, characterized in that: The second bending device (12) comprises a bending plate (28), a support rod (27) fixed to the bending plate (28) and supporting the side tarpaulin, and an adjustment structure connecting the bending plate (28) and the bracket, wherein the bending plate (28) is provided with a V-shaped bending hole (26) for the side tarpaulin to pass through, and the height of the inner opening of the bending hole (26) is flush with the top surface of the support rod (27).

6. The method for hot pressing a tent tarpaulin according to claim 5, characterized in that: The adjustment structure comprises a horizontal plate (24) having a first long hole, the horizontal plate (24) being bolted to the bracket, a vertical plate (29) being fixedly connected to the horizontal plate (24), the vertical plate (29) being provided with threaded holes arranged in the height direction and penetrating the vertical plate (29), the bent plate (28) being provided with a second long hole (25) extending along the height defense line, a bolt being threadedly connected to the threaded hole being passed through the second long hole (25).

7. The hot pressing method of tent tarpaulin according to claim 2, characterized in that: The system for implementing the hot pressing method comprises, arranged in sequence from front to back, an unwinding device, a first bending device (11), a first hot pressing device (1), a second steering roller group (7), a second bending device (12), a second hot pressing device (2), a third hot pressing device (3), a main bending device, a second steering roller group (7), a punching device (5), and a winding device (6), wherein the first steering roller group (8) is located below the second hot pressing device (2), and the second steering roller group (7) is located below the third hot pressing device (3).

8. The method for hot pressing a tent tarpaulin according to claim 7, characterized in that: A walking plate (13) extending in the width direction of the main tarpaulin and located below the first hot pressing device (1) is also provided between the first bending device (11) and the unwinding device, and a conveying roller for the main tarpaulin and the side tarpaulin to pass around is provided below the walking plate (13).

Images