Tarpaulin edge take-up device

Abstract

A tarpaulin edge collecting device is used to solve the technical problem that the guide wheel in the prior art mentioned in the background art can guide the tarpaulin in conveying, but when the spring elastic coefficient of the guide wheel is large, it is inconvenient for the operator to lift the guide wheel, so that the guide wheel needs to be lifted by an external tool, which brings inconvenience to the operator. The tarpaulin edge collecting device comprises a workbench and a rack arranged on the workbench. An edge folding assembly for folding the tarpaulin is arranged on the workbench. Two conveying rollers for conveying the tarpaulin are rotatably arranged on the workbench. A heating head for heat sealing the folded edge of the tarpaulin is arranged on the rack. The heating head is located between the conveying rollers and the edge folding assembly. Two pressing wheels are arranged on the rack, and the two pressing wheels correspond to the two conveying rollers respectively. A driving assembly for driving the two pressing wheels and making the two pressing wheels abut against the two conveying rollers is arranged on the rack.

Description

Technical Field

[0001] This utility model relates to the field of tarpaulin processing technology, specifically to a tarpaulin edge-gathering device. Background Technology

[0002] Tent tarpaulins are widely used in various fields such as outdoor activities, engineering construction, warehousing and logistics, and agriculture. In outdoor activities, tarpaulins can be used to set up temporary tents, sunshades, and other facilities; in engineering construction, tarpaulins can be used for sunshade, wind protection, dust protection, and waterproofing, protecting the construction site and construction materials; in warehousing and logistics, tarpaulins can be used to cover goods to prevent them from getting damp, contaminated, or damaged; and in agriculture, tarpaulins can be used for shading crops, wind protection, and hail protection, protecting crop growth.

[0003] An existing tarpaulin edge-sealing device, such as the invention patent document with authorization announcement number "CN219706109U" and patent name "An Automatic Heat-Sealing Device for Woven Fabric Production", discloses a tarpaulin edge-sealing device, including a heat-sealing machine body. An extension plate is fixedly connected to one side surface of the heat-sealing machine body, a vertical plate is fixedly connected to the top of the extension plate, a pressing mechanism is fixedly connected to the top of the vertical plate, a rectangular block is fixedly connected to the top of the heat-sealing machine body, a top plate is fixedly connected to the top of the rectangular block, a positioning mechanism is fixedly connected to the bottom of the top plate, and a clamping mechanism is fixedly connected to the top of the other side surface of the heat-sealing machine body.

[0004] The guide wheel in the aforementioned patent document can guide the tarpaulin during transport. However, since the tarpaulin needs to be subjected to a certain downward pressure by the guide wheel during transport, when the spring elasticity coefficient on the guide wheel is large, it is not convenient for the operator to lift the guide wheel. Therefore, it is necessary to lift the guide wheel with external tools, which causes inconvenience to the operator. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by proposing a tarpaulin edge-gathering device. This device solves the technical problem mentioned in the background art: while the guide wheel in the existing tarpaulin edge-gathering device can guide the tarpaulin during transport, the guide wheel needs to apply a certain downward pressure during transport. However, when the spring elastic coefficient on the guide wheel is large, it is inconvenient for the operator to lift the guide wheel, thus requiring the use of external tools to lift the guide wheel, which causes inconvenience to the operator.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: it includes a workbench and a frame fixed on the workbench. The workbench is provided with a folding assembly for folding the tarpaulin. Two conveying rollers for conveying the tarpaulin are rotatably provided on the workbench. The frame is provided with a heating head for heat sealing the folded edge of the tarpaulin, and the heating head is located between the conveying rollers and the folding assembly. The frame is provided with two pressing rollers, and the two pressing rollers are respectively vertically corresponding to the two conveying rollers. The frame is provided with a driving assembly for driving the two pressing rollers and making the two pressing rollers abut against the two conveying rollers respectively.

[0007] Working principle: The tarpaulin enters from one side of the device. The operator aligns the edge of the tarpaulin to be hemmed and feeds it into the hemming assembly. The tarpaulin first passes through the hemming assembly, which folds the edge of the tarpaulin to form the desired hemming shape. After hemming, the tarpaulin continues to be conveyed forward and immediately enters the heat sealing station. The heating head heats the edge of the tarpaulin that has just been folded. The high temperature melts the tarpaulin material. The molten edge of the tarpaulin is then fed into the clamping station consisting of conveying rollers and pressing rollers. Under the action of the drive assembly, the pressing rollers press down on the conveying rollers. This pair of rollers applies uniform and continuous pressure to the molten area, so that the two layers of material at the hemmed area are firmly bonded together. At the same time, after the conveying process, the material cools and sets naturally, thus completing the hemming operation.

[0008] Compared with the prior art, the present invention has the following beneficial effects: Immediately after folding, heat sealing and pressurization are applied to prevent the fold from loosening or deforming due to resting, ensuring the stability of the fold shape. Instant pressurization after heating allows the molten material to fully combine under pressure, ensuring the stitching strength and sealing of the edge. The stable conveying force provided by the conveyor rollers and pressing rollers prevents the tarpaulin from wrinkling or deviating during processing, ensuring the straightness of the edge line. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional structural diagram of the fixing block and the connecting block; Figure 3 Figure 1 Enlarged cross-sectional view of point A in the middle.

[0010] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Frame; 3. Conveyor roller; 4. Heating head; 5. Pressing roller; 6. Fixing block; 7. Connecting block; 8. Moving rod; 9. First spring; 10. Auxiliary wheel; 11. Cavity; 12. Mounting bracket; 13. First fixed column; 14. Second spring; 15. Second fixed column; 16. Limiting block; 17. Screw; 18. Slider; 19. Worm gear; 20. First motor; 21. Worm; 22. Second motor; 23. First sprocket; 24. Second sprocket; 25. Chain. Detailed Implementation

[0011] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0012] Example: like Figure 1 and Figure 2 As shown, a tarpaulin edge-folding device includes a workbench 1 and a frame 2 fixed on the workbench 1. The workbench 1 is provided with an edge-folding assembly for folding the tarpaulin edge. The edge-folding assembly includes a fixing block 6, a connecting block 7, a moving rod 8, a first spring 9, and an auxiliary wheel 10. The fixing block 6 is fixed on the workbench 1, and the connecting block 7 is detachably mounted on the fixing block 6. A cavity 11 is formed at the end of the connecting block 7 away from the fixing block 6. The moving rod 8 is slidably disposed in the cavity 11. The first spring 9 is disposed in the cavity 11, and its two ends are respectively attached to the inner wall of the cavity 11. The auxiliary wheel 10 is rotatably mounted on the end of the moving rod 8 away from the first spring 9 and abuts against the fixed block 6. The edge of the tarpaulin is guided to the gap between the fixed block 6 and the auxiliary wheel 10. When the tarpaulin moves, the auxiliary wheel 10 rolls close to the guide surface of the fixed block 6, gradually bending the flat edge of the tarpaulin into the desired shape. The moving rod 8 can slide in the cavity 11 and is continuously pushed towards the fixed block 6 by the first spring 9. This elastic design allows the auxiliary wheel 10 to always press against the fixed block 6, while generating appropriate pressure on the passing tarpaulin.

[0013] like Figure 1 As shown, two conveying rollers 3 for conveying tarpaulins are rotatably mounted on the workbench 1. A second motor 22 is fixedly mounted at the bottom of the workbench 1. A first sprocket 23 is fixedly mounted at the output end of the second motor 22. A second sprocket 24 is fixedly mounted at the ends of both conveying rollers 3. A chain 25 is fitted around the outer ring of the two second sprockets 24 and the first sprocket 23. When the second motor 22 is started, it drives the first sprocket 23 on its output shaft to rotate. Through the transmission of the chain 25, the power is simultaneously transmitted to the two second sprockets 24 mounted at the ends of the conveying rollers 3. The two second sprockets 24 drive the two conveying rollers 3 to rotate synchronously and in the same direction, thereby providing a continuous forward traction force for the tarpaulin.

[0014] like Figure 1 and Figure 3As shown, the frame 2 is equipped with a heating head 4 for heat sealing the folded edge of the tarpaulin, and the heating head 4 is located between the conveyor roller 3 and the folding assembly. The frame 2 is equipped with two pressing rollers 5, and the two pressing rollers 5 are respectively vertically corresponding to the two conveyor rollers 3. The frame 2 is equipped with a mounting frame 12, and the two pressing rollers 5 are mounted on the mounting frame 12. Two hollow first fixing posts 13 are fixed on the mounting frame 12, and a second spring 14 is fixed inside each of the two first fixing posts 13. The two first fixing posts 13 are slidably mounted on the second fixing posts 15, and one end of each of the two second fixing posts 15 is connected to the two second springs. Spring 14 is fixedly connected, and the other end is rotatably connected to two pressing wheels 5 respectively. Limiting blocks 16 are fixed on both of the second fixing columns 15. The two limiting blocks 16 abut against the mounting frame 12. After the tarpaulin is folded by the folding assembly, it immediately passes under the heating head 4. The heating head 4 heats the folded area to melt the tarpaulin material. Then, the tarpaulin enters the clamping area composed of the conveying roller 3 and the pressing wheel 5. The pressing wheel 5 is pressed down on the conveying roller 3 by the second fixing column 15 under the action of the second spring 14. The elastic force of the second spring 14 is transmitted to the pressing wheel 5 through the second fixing column 15, so that it applies continuous pressure to the folded area of ​​the tarpaulin.

[0015] like Figure 1 and Figure 3 As shown, the frame 2 is equipped with a drive assembly for driving two clamping rollers 5 and causing them to abut against two conveying rollers 3 respectively. The drive assembly includes a screw 17, a slider 18, a worm gear 19, a first motor 20, and a worm 21. The screw 17 is rotatably mounted on the worktable 1 and slides vertically through the frame 2. The slider 18 is fixed to the mounting bracket 12 and is threadedly connected to the screw 17. The worm gear 19 is fixed to the end of the screw 17. The first motor 20 is fixed to the frame 2, and the worm 21 is fixed to the output end of the first motor 20 and meshes with the worm gear 19. When it is necessary to adjust the height of the clamping rollers 5... When the tarpaulin is placed or when different thicknesses are accommodated, the first motor 20 is started. The first motor 20 drives the worm gear 21 to rotate, and the worm gear 21 drives the worm wheel 19 that meshes with it to rotate. The worm wheel 19 drives the screw 17 to rotate. The slider 18, which forms a threaded pair with the screw 17, is restricted from rotating and can only drive the entire mounting frame 12 to move vertically in a straight line along the axis of the screw 17, thereby realizing the lifting and lowering of the pressure wheel 5. When the mounting frame 12 moves vertically away from the conveyor roller 3, the second spring 14 is in a compressed state. The second spring 14 pushes the second fixed column 15, and the limiting block 16 on the second fixed column 15 will abut against the inner wall of the mounting frame 12.

[0016] Working principle: First, the edge of the tarpaulin is guided into the gap between the fixing block 6 and the auxiliary wheel 10 of the folding assembly. As the tarpaulin moves forward, the auxiliary wheel 10 rolls against the guide surface of the fixing block 6 under the elastic pressure of the first spring 9, precisely bending the edge of the tarpaulin into the required shape. After the folding is completed, the tarpaulin continues to move forward to below the heating head 4. The heating head 4 heats the folded area to melt the material. Subsequently, the tarpaulin enters the clamping area composed of synchronously rotating conveying rollers 3 and pressing rollers 5. Under the control of the drive assembly, the pressing rollers 5 provide continuous and adaptive pressure through the second spring 14 on the mounting frame 12, firmly pressing the molten folded area onto the tarpaulin body to achieve heat sealing and shaping. The conveying rollers 3 are driven synchronously by the second motor 22 at the bottom of the workbench 1 through the sprocket and chain 25 mechanism, while the height of the pressing rollers 5 is adjusted by the first motor 20 driving the worm gear 19, worm 21 and screw 17 mechanism to adapt to tarpaulins of different thicknesses and ensure the pressing effect.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A tarpaulin edge-sealing device, characterized in that, The device includes a workbench (1) and a frame (2) fixed on the workbench (1). The workbench (1) is provided with a folding assembly for folding the tarpaulin. Two conveying rollers (3) for conveying the tarpaulin are rotatably provided on the workbench (1). The frame (2) is provided with a heating head (4) for heat sealing the folded edge of the tarpaulin. The heating head (4) is located between the conveying rollers (3) and the folding assembly. The frame (2) is provided with two pressing rollers (5). The two pressing rollers (5) correspond vertically to the two conveying rollers (3). The frame (2) is provided with a driving assembly for driving the two pressing rollers (5) and making the two pressing rollers (5) abut against the two conveying rollers (3).

2. The tarpaulin edge-sealing device according to claim 1, characterized in that: The folding assembly includes a fixed block (6), a connecting block (7), a moving rod (8), a first spring (9), and an auxiliary wheel (10). The fixed block (6) is fixed on the workbench (1). The connecting block (7) is detachably mounted on the fixed block (6). A cavity (11) is opened at the end of the connecting block (7) away from the fixed block (6). The moving rod (8) is slidably mounted in the cavity (11). The first spring (9) is mounted in the cavity (11), and both ends of the first spring (9) are fixedly connected to the inner wall of the cavity (11) and the moving rod (8), respectively. The auxiliary wheel (10) is rotatably mounted at the end of the moving rod (8) away from the first spring (9), and the auxiliary wheel (10) abuts against the fixed block (6).

3. The tarpaulin edge-sealing device according to claim 1, characterized in that: The frame (2) is provided with a mounting bracket (12), and two clamping wheels (5) are mounted on the mounting bracket (12). Two hollow first fixing columns (13) are fixed on the mounting bracket (12). A second spring (14) is fixed inside each of the two first fixing columns (13). A second fixing column (15) is slidably mounted inside each of the two first fixing columns (13). One end of each of the two second fixing columns (15) is fixedly connected to the two second springs (14), and the other end is rotatably connected to the two clamping wheels (5). A limiting block (16) is fixed on each of the two second fixing columns (15), and the two limiting blocks (16) abut against the mounting bracket (12).

4. The tarpaulin edge-sealing device according to claim 3, characterized in that: The drive assembly includes a screw (17), a slider (18), a worm gear (19), a first motor (20), and a worm (21). The screw (17) is rotatably mounted on the workbench (1) and slides vertically through the frame (2). The slider (18) is fixed on the mounting bracket (12) and is threadedly connected to the screw (17). The worm gear (19) is fixed at the end of the screw (17). The first motor (20) is fixed on the frame (2). The worm (21) is fixed at the output end of the first motor (20) and meshes with the worm gear (19).

5. A tarpaulin edge-sealing device according to claim 1, characterized in that: The bottom of the workbench (1) is fixed with a second motor (22), the output end of the second motor (22) is fixed with a first sprocket (23), the ends of the two conveying rollers (3) are fixed with second sprockets (24), and chains (25) are fitted on the outer rings of the two second sprockets (24) and the first sprockets (23).

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