A device for setting a flexible strip conveying line to edge it

Abstract

The utility model discloses a device is set up on flexible strip material conveying line to edge covering. Including the edge folding mechanism of upstream and the edge returning mechanism of downstream thereof. The edge folding mechanism includes the edge folding cylinder, and its length is less than the width of flexible strip material, is used for exerting downward force to flexible strip material, makes its both sides upwardly fold. The edge returning mechanism is used for exerting force to the folded part, makes it with main body part adhere. The utility model discloses the cooperation of edge folding cylinder and edge returning mechanism has realized the mechanization and continuity of edge covering operation, has effectively avoided the complex structure of traditional edge covering equipment, the problem of complicated adjustment. Preferably, the force adding cylinder of edge folding cylinder and edge returning mechanism can all be rotatably arranged, significantly reduces the friction between the material, guarantees the smooth conveying and product quality. The device has simple structure, is convenient for adjustment and maintenance, is especially suitable for the automatic edge covering production of flexible strip material such as towel, surgical towel etc.

Description

Technical Field

[0001] This utility model relates to the field of medical dressing technology, and in particular to a device for wrapping the edges of a flexible strip on a conveyor line. Background Technology

[0002] In the manufacturing and processing of textiles, medical supplies, and daily necessities, flexible strips (such as towels and surgical drapes) are common product forms. After weaving or cutting, these products often have untreated yarns or fibers, or "loose threads," at their edges. If these loose threads are directly exposed, it not only affects the product's appearance and quality but also causes many problems in actual use: for example, the loose threads may fall off during use, causing contamination; for towels that come into direct contact with the skin or surgical drapes that require sterility, loose threads can seriously affect comfort and safety.

[0003] Chinese patent CN113235235A discloses a towel edging machine, including a frame, a gripping mechanism, a linear drive mechanism, a folding mechanism, and an adsorption platform. The adsorption platform is mounted on the frame, and the gripping mechanism is mounted on the execution component of the linear drive mechanism to grip the folded towel and convey it to the adsorption platform. The folding mechanism includes a support frame, a base, a transverse platform, a rotating shaft, a torsion spring, a friction wheel, a pressure plate, a top plate, a friction plate, and a single-axis cylinder. The single-axis cylinder synchronously drives the friction plate and the top plate to move closer to the transverse platform, thereby driving the friction wheel to rotate. The pressure plate then presses the towel on the transverse platform, and the top plate tucks the portion of the towel protruding from the transverse platform into the bottom of the towel, thus achieving the folding. The gripping mechanism then conveys the folded towel to the adsorption platform for subsequent sewing. This direct insertion method for folding can accommodate towels of different sizes.

[0004] While this method can achieve the edging of towels, its structure is complex, involving numerous components and complex interrelationships. This makes adjustments and settings cumbersome and parts replacement inconvenient. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a device for edge wrapping of flexible strips on a conveyor line. To achieve the aforementioned objective, this utility model employs the following technical solution: A device for edge-wrapping a flexible strip on a conveyor line, the conveyor line including a downstream force-applying device for applying a force to the flexible strip to drive its movement. The device includes an upstream folding mechanism and a downstream retraction mechanism adjacent to the folding mechanism. The folding mechanism includes a folding tube that abuts against a flexible strip and allows a downward force to be applied to the flexible strip. The length of the folding tube is set to be less than the width of the flexible strip, so that the flexible strip located outside the folding tube folds upward. The retraction mechanism is configured to allow a force to be applied to the upwardly folded flexible strip so that it and the horizontally moving flexible strip adhere to each other.

[0006] Furthermore, the folded tube is designed as a smooth, circular cylindrical structure to reduce the friction generated when it comes into contact with the flexible strip.

[0007] Furthermore, the folding mechanism also includes a connecting shaft that is relatively fixed on the conveyor line. The connecting shaft passes through the axis of the folding cylinder and allows the folding cylinder to be rotatably mounted on the connecting shaft. This converts the static friction between the folding cylinder and the flexible strip into dynamic friction, thereby reducing the frictional force between them.

[0008] Furthermore, a limiting part is provided on the connecting shaft. The limiting part is located on both sides of the folded tube and abuts against the folded tube to limit the position of the folded tube.

[0009] Furthermore, the edge-returning mechanism includes a fixed rod that is relatively fixed to the conveyor line and extends parallel to the folding cylinder, and an edge-returning rod that is relatively fixed to the fixed rod and inclinedly arranged, the edge-returning rod being configured to abut against the flexible strip.

[0010] Furthermore, the edge-returning mechanism also includes an adjustment part disposed on the fixed rod and allowing the edge-returning rod to be received. The adjustment part is configured to allow the edge-returning rod to rotate, so as to adjust the angle of the edge-returning rod relative to the flexible strip, thereby adjusting the magnitude of the force applied by the edge-returning rod to the flexible strip.

[0011] Furthermore, the adjustment unit includes a first connecting seat fixedly mounted on the fixed rod, and a second connecting seat abutting against the first connecting seat. The second connecting seat is configured to allow it to be fixed relative to the return rod. Both the first and second connecting seats are provided with through holes. The adjustment unit also includes a fastener, which is configured to allow it to pass through the through holes to fix the first and second connecting seats relative to each other.

[0012] Furthermore, the edge-returning mechanism includes a force-applying cylinder, the length of which is set to be at least equivalent to the length of the folding cylinder.

[0013] Furthermore, the booster cylinder is rotatably mounted.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, an extremely simplified edge-wrapping device is constructed by setting up an edge-folding mechanism composed of a single edge-folding cylinder and a corresponding edge-returning rod or force-applying cylinder-type edge-returning mechanism. This approach not only significantly reduces the number of parts and lowers manufacturing and maintenance costs, but also greatly simplifies the equipment adjustment and setup process. Operators do not need to handle complex coordination relationships; simple positioning or angle adjustments are sufficient to adapt to different production needs. Furthermore, the modular design makes the replacement of key parts (such as the edge-folding cylinder and edge-returning rod) more convenient after wear, effectively reducing maintenance downtime.

[0015] 2. In this invention, by setting the folding cylinder as a smooth circular cylindrical structure that can rotate around the connecting shaft, and preferably using a force-applying cylinder as the folding mechanism, the static friction between the equipment and the flexible strip is efficiently converted into dynamic friction. This method greatly reduces the frictional force generated by the device on the material during the folding process, ensuring smooth and unobstructed movement of the flexible strip on the conveyor line and effectively preventing problems such as material stretching deformation, surface wear, or snagging caused by excessive friction. This fundamentally guarantees the product's appearance quality and performance. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the device for wrapping the edge of a flexible strip on a conveyor line according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the overall structure of the folding mechanism according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the overall structure of the edge return mechanism in an embodiment of this utility model.

[0017] In the accompanying drawings: a device 100 for edge wrapping of flexible strip conveyors, an edge folding mechanism 1, an edge folding cylinder 11, a connecting shaft 12, a limiting part 121, an edge return mechanism 2, a fixing rod 21, an edge return rod 22, an adjusting part 23, a first connecting seat 231, a second connecting seat 232, and a fastener 233 are provided on the flexible strip conveyor line. Detailed Implementation

[0018] Example 1: The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a device for edge wrapping on a flexible strip conveyor line.

[0020] The conveying line includes a force-applying device located downstream. Specifically, the force-applying device is configured to apply traction force to the flexible strip, thereby moving it, such as a winding device. It should be noted that the structure of the force-applying device and the manner in which it applies force to the flexible strip are well known to those skilled in the art. Therefore, they will not be described in detail here. Furthermore, the flexible strip includes, but is not limited to, towels and surgical drapes.

[0021] Figure 1 The illustration schematically shows a device, according to the present invention, arranged on a flexible strip conveyor line for edge wrapping. In such a way... Figure 1 In the illustrated embodiment, the device 100 disposed on the flexible strip conveyor line for edge wrapping includes an upstream folding mechanism 1, which is configured to allow a force to be applied to the flexible strip so that the edge of the flexible strip curls up.

[0022] At the same time, such as Figure 1 As shown, the device 100 also includes a backing mechanism 2 adjacent to and downstream of the folding mechanism 1. The backing mechanism 2 is configured to allow a downward force to be applied to the upward-curving flexible strip, so that the upward-curving flexible strip and the horizontally moving flexible strip are brought together. This achieves the backing operation of the flexible strip.

[0023] In this embodiment, as Figure 1 , 2 As shown, the folding mechanism 1 includes a folding tube 11, which is configured to abut against the flexible strip and allow a downward force to be applied to the flexible strip. Simultaneously, the length of the folding tube 11 is set to be less than the width of the flexible strip.

[0024] In this way, the flexible strip located on the outside of the folded edge tube 11 can be folded upwards. Specifically, in this arrangement, the area where the horizontally arranged flexible strip and the folded edge tube 11 abut against each other will be subjected to a downward force, while the area that is not in contact with the folded edge tube 11 will not be subjected to any force. Therefore, the unforced area will fold upwards.

[0025] In this configuration, such as Figure 1 , 2 As shown, when the device 100 is needed to perform edge-wrapping operations on a flexible strip, the flexible strip is first arranged along the required movement path, with the flexible strip positioned below the folding cylinder 11 and the edge-returning mechanism 2. Simultaneously, a force-applying device is arranged downstream.

[0026] At this point, the force-applying device is activated, continuously applying force to the flexible strip. During this process, the folding cylinder 11 continuously applies a downward force to the flexible strip moving along it, causing both sides of the flexible strip to fold upwards (curl up) along the ends of the folding cylinder. Simultaneously, the hemming mechanism 2 continuously applies a downward force to the folded flexible strip, causing the upwardly folded flexible strip to adhere to the horizontally moving flexible strip. This achieves the hemming operation.

[0027] In one embodiment, such as Figure 1 As shown, the folded edge tube 11 is configured as a circular cylindrical structure with a smooth outer surface. This reduces the friction between the folded edge tube 11 and the flexible strip, allowing the flexible strip to move smoothly along the folded edge tube 11.

[0028] According to a preferred embodiment of the present invention, such as Figure 1 , 2 As shown, the folding mechanism 1 also includes a connecting shaft 12, which is fixed relative to the conveyor line and passes through the folding cylinder 11 along its axis. Simultaneously, the folding cylinder 11 is rotatably mounted on the connecting shaft 12. In this way, the static friction generated between the folding cylinder 11 and the flexible strip can be converted into dynamic friction. Therefore, the frictional force generated between the folding cylinder 11 and the flexible strip can be further reduced. In one embodiment, such as Figure 1 , 2 As shown, a limiting part 121 is also provided on the connecting shaft 12. The limiting part 121 is located on both sides of the folding tube 11, and the limiting part 121 abuts against the folding tube 11 to limit the position of the folding tube 11. This prevents the folding tube 11 from shifting relative to the connecting shaft 12. It should be noted that the limiting part 121 can be configured in any way that allows it to be fixed relative to the connecting shaft 12 and abut against the folding tube 11, including but not limited to a fixing pin passing through the connecting shaft 12 and a fixing ring sleeved on the connecting shaft 12.

[0029] In this embodiment, as Figure 1 As shown, the edge-returning mechanism 2 includes a fixed rod 21, which is fixed relative to the conveyor line and extends parallel to the folding cylinder 11. An edge-returning rod 22 is also obliquely arranged on the fixed rod 21. The edge-returning rod 22 is configured to abut against the flexible strip to apply a downward force to the flexible strip after it has been folded (raised) by the folding cylinder 11, thereby causing the raised flexible strip and the horizontal flexible strip to adhere to each other.

[0030] It should be noted that, as Figure 1As shown, the flexible strip is mounted on the fixed rod 21. In this way, the fixed rod 21 can support the flexible strip, and the included angle formed between the fixed rod 21 and the return rod 22 limits the movement of the flexible strip. This further prevents the flexible strip from shifting.

[0031] According to a preferred embodiment of the present invention, such as Figure 1 , 3 As shown, the edge-returning mechanism 2 also includes an adjustment section 23, which is mounted on the fixed rod 21 and allows the edge-returning rod 22 to be received. In this embodiment, the adjustment section 23 is configured to allow the edge-returning rod 22 to rotate, thereby adjusting the angle of the edge-returning rod 22 relative to the flexible strip, and thus adjusting the magnitude of the force applied by the edge-returning rod 22 to the flexible strip. This allows for adjustment of the degree of contact between the raised and horizontal flexible strips.

[0032] In one embodiment, such as Figure 3 As shown, the adjustment part 23 includes a first connecting seat 231 and a second connecting seat 232 that abuts against the first connecting seat 231. The first connecting seat 231 is fixedly mounted on the fixed rod 21, and the second connecting seat 232 is configured to receive the return rod 22 and is fixedly mounted to the return rod 22.

[0033] In addition, such as Figure 3 As shown, both the first connecting seat 231 and the second connecting seat 232 are provided with through holes. The adjusting part 23 also includes a fastener 233, which is configured to pass through the through holes to fix the first connecting seat 231 and the second connecting seat 232 together. In this way, the angle of the second connecting seat 232 relative to the first connecting seat 231 can be adjusted, thereby adjusting the angle of the return rod 22 relative to the flexible strip. It should be noted that the fastener 233 is configured as a bolt and nut joint.

[0034] The operation of the device 100, which is installed on a flexible strip conveyor line to wrap the edge of the material according to this utility model, is as follows.

[0035] First, the flexible strip is arranged along the conveyor line, positioned below the folding cylinder 11 and above the fixed rod 21, with the folding cylinder 11 and the return rod 22 respectively abutting against the flexible strip and jointly applying a downward force to it. Simultaneously, a force-applying device is arranged downstream.

[0036] At this point, the force-applying device is activated to continuously apply traction force to the flexible strip, causing it to move along the conveying direction. During this process, the folding cylinder 11 continuously applies a downward force to the flexible strip. Since the length of the folding cylinder 11 is less than the width of the flexible strip, the unpressed portions on both sides fold upwards.

[0037] Subsequently, the upward-folded flexible strip continues to move to the edge-returning mechanism 2. The edge-returning rod 22 in the edge-returning mechanism 2 will continuously apply a downward force to the raised edge, so that it gradually fits into the horizontally moving flexible strip, completing the edge-wrapping operation.

[0038] It should be noted that during the hemming process, the folding cylinder 11 is designed to rotate around the connecting shaft 12, converting the static friction between it and the flexible strip into dynamic friction, effectively reducing friction and ensuring smooth conveying of the flexible strip. Simultaneously, the return hemming mechanism 2 can adjust the tilt angle of the return hemming rod 22 via the adjustment part 23 to control the pressing force on the flexible strip, adapting to the hemming requirements of different materials and widths.

[0039] Example 2: The difference between this implementation and the first implementation lies in the use of a different hemming mechanism 2. In this embodiment, the hemming mechanism 2 includes a force-applying cylinder (not shown in the figure), the length of which is set to be at least equivalent to the length of the folding cylinder 11.

[0040] In this way, the force-applying cylinder can apply force to the raised edge of the flexible strip after it has been folded by the folding cylinder 11, so that the upwardly folded flexible strip and the horizontally moving flexible strip are pressed together. This achieves the edge-wrapping operation. Preferably, the length of the force-applying cylinder is set to be greater than the length of the folding cylinder 11. Furthermore, the force-applying cylinder is rotatably mounted.

[0041] 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 device for edge-wrapping a flexible strip on a conveyor line, the conveyor line including a downstream force-applying device for applying a force to the flexible strip to drive its movement. Its features are, The device (100) includes an upstream folding mechanism (1) and a downstream folding mechanism (2) adjacent to the folding mechanism (1). The folding mechanism (1) includes a folding tube (11) that abuts against the flexible strip and allows a downward force to be applied to the flexible strip. The length of the folding tube (11) is set to be less than the width of the flexible strip so that the flexible strip located outside the folding tube (11) is folded upward. The backing mechanism (2) is set to allow a force to be applied to the upwardly folded flexible strip so that it and the horizontally moving flexible strip fit together.

2. The device for edge wrapping of a flexible strip on a conveyor line according to claim 1, characterized in that, The folded tube (11) is configured as a circular cylindrical structure with a smooth outer surface to reduce the friction generated when it comes into contact with the flexible strip.

3. The device for edge wrapping of a flexible strip on a conveyor line according to claim 2, characterized in that, The folding mechanism (1) also includes a connecting shaft (12) that is fixed relative to the conveyor line. The connecting shaft (12) passes through the axis of the folding cylinder (11) and the folding cylinder (11) is rotatably mounted on the connecting shaft (12) to convert the static friction between the folding cylinder (11) and the flexible strip into dynamic friction, thereby reducing the frictional force between them.

4. The device for edge wrapping of a flexible strip on a conveyor line according to claim 3, characterized in that, A limiting part (121) is also provided on the connecting shaft (12). The limiting part (121) is provided on both sides of the folded tube (11) and is respectively abutted against the folded tube (11) to limit the position of the folded tube (11).

5. The device for edge wrapping of a flexible strip on a conveyor line according to claim 1, characterized in that, The edge return mechanism (2) includes a fixed rod (21) that is relatively fixed on the conveyor line and extends along the folding cylinder (11), and an edge return rod (22) that is relatively fixed on the fixed rod (21) and inclined, the edge return rod (22) being configured to abut against the flexible strip.

6. The device for edge wrapping of a flexible strip on a conveyor line according to claim 5, characterized in that, The edge return mechanism (2) further includes an adjustment part (23) disposed on the fixed rod (21) and allowing the edge return rod (22) to be received. The adjustment part (23) is configured to allow the edge return rod (22) to rotate so as to adjust the angle of the edge return rod (22) relative to the flexible strip, thereby adjusting the magnitude of the force exerted by the edge return rod (22) on the flexible strip.

7. The device for edge wrapping of a flexible strip on a conveyor line according to claim 6, characterized in that, The adjustment part (23) includes a first connecting seat (231) fixedly mounted on the fixed rod (21) and a second connecting seat (232) abutting against the first connecting seat (231). The second connecting seat (232) is configured to allow it to be fixed together with the return rod (22). Both the first connecting seat (231) and the second connecting seat (232) are provided with through holes. The adjustment part (23) also includes a fastener (24). The fastener (24) is configured to allow it to pass through the through hole so that the first connecting seat (231) and the second connecting seat (232) are fixed together.

8. The device for edge wrapping of a flexible strip conveyor line according to claim 1, characterized in that, The edge-returning mechanism (2) includes a force-applying cylinder, the length of which is set to be at least equivalent to the length of the folding cylinder (11).

9. The device for edge wrapping of a flexible strip on a conveyor line according to claim 8, characterized in that, The booster cylinder is rotatably mounted.

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