A w-shaped folding device for folding nonwoven fabric

Abstract

The utility model discloses a W type folding device for folding non -woven fabric can continuously fold the non -woven fabric of roll, and disposable can make non -woven fabric form multiple folding marks in a direction, in addition, the relative position of adjustable folding mechanism in horizontal direction, angle, the adjustment operation is simple, can satisfy the folding demand of different crease position, and the overall efficiency is high. In the application, including folding frame, roller frame, W type cloth folding structure and non -woven fabric roller, the bottom of folding frame is equipped with two universal wheel and at least one rolling wheel, is equipped with brake on universal wheel, and W type cloth folding structure is established on folding frame through a main rotating shaft, and W type cloth folding structure includes cloth folding seat frame, a plurality of guide bottom plate and a plurality of guide vertical board, the included angle between adjacent guide vertical board is M degree, 10 is less than M and is less than 30, and the plate gap is formed between adjacent guide bottom plate, and the plate gap and guide vertical board correspond one to one, and guide vertical board is located at corresponding plate gap.

Description

Technical Field

[0001] This utility model belongs to the field of nonwoven fabric folding technology, and in particular relates to a W-shaped folding device for folding nonwoven fabrics. Background Technology

[0002] Before leaving the factory, non-woven fabrics can be pre-folded in various ways to meet specific application scenarios. For example, pet care pads, when pre-folded, are easier to spread out during use, ensuring a more even distribution of the absorbent layer and preventing loosening or shifting during use. Portable towels and travel-sized compressed non-woven towels, when pre-folded and vacuum-packed, unfold upon contact with water. Medical dressings, when folded, can be opened directly for use, avoiding secondary contamination during handling, and are particularly suitable for emergency situations. Utility Model Content

[0003] This utility model provides a W-shaped folding device for folding non-woven fabrics, which can continuously fold rolls of non-woven fabrics and form multiple fold lines in one direction in one go. In addition, the relative position and angle of the folding mechanism in the horizontal direction can be adjusted. The adjustment operation is simple and can meet the folding needs of different fold positions, with high overall efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A W-shaped folding device for folding nonwoven fabric includes a folding frame, a roller frame, a W-shaped folding structure disposed on the folding frame, and a nonwoven fabric roller rotatably connected to the roller frame and driven by a roller motor. The bottom of the folding frame is equipped with two universal wheels and at least one rolling wheel. The universal wheels are equipped with brakes. The W-shaped folding structure is mounted on the folding frame via a main rotating shaft. The main rotating shaft is rotatably connected to the folding frame. The W-shaped folding structure includes a folding base fixed to the main rotating shaft, several guide bottom plates located above the folding base, and several guide vertical plates fixed relative to the folding base. The folding base is equipped with several locking screws that can press the folding frame. Each guide vertical plate is arranged sequentially along the circumference of the main rotation axis. The included angle between any two adjacent guide vertical plates is the same. The included angle between adjacent guide vertical plates is M degrees, 10 < M < 30. Each guide bottom plate is arranged sequentially along the circumference of the main rotation axis. A plate gap is formed between adjacent guide bottom plates. The plate gap corresponds one-to-one with the guide vertical plate, and the guide vertical plate is located at the corresponding plate gap. The folding frame is equipped with several cylinders for moving each drive guide base plate up and down relative to each guide vertical plate, and the number of guide vertical plates is at least 2.

[0005] Preferably, the folding frame is provided with two vertically arranged shaping rollers, which are rotatably connected to the folding frame, and a shaping space is formed between the two shaping rollers; In a guide vertical plate: one end of the guide vertical plate is the guide front end, and the other end of the guide vertical plate is the guide rear end; the guide rear end is located between the guide front end and any shaping roller; In two adjacent guide plates: the distance between the two guide rear ends is less than the distance between the two guide front ends.

[0006] Preferably, the shaping roller is rotatably connected to the folding frame via an inner shaft provided on the shaping roller. In one shaping roller: the shaping roller is sleeved on the inner shaft and rotatably connected to the inner shaft. The folding frame is provided with two shaft seat groups that correspond one-to-one with the inner shaft. The shaft seat group includes two shaft seat blocks and a fixing block is provided on the shaft seat block. In the corresponding inner shaft and bearing assembly: a bearing block, any shaping roller, and another bearing block are arranged sequentially from top to bottom. The bearing block has a vertically oriented strip hole in the depth direction. The inner shaft slides into the strip hole. The sliding direction of the inner shaft is horizontal. The sliding direction of the inner shaft, the length direction of the upper strip hole, and the length direction of the lower strip hole are all parallel. The fixing block has a fixing screw that is threaded into the fixing block. The fixing screw presses against one side of the inner shaft. One end of the strip hole in the length direction is the limiting end, and the other end of the strip hole in the length direction is the allowance end. The limiting end is in contact with the side of the inner shaft. The limiting end and the fixing screw are located on opposite sides of the inner shaft axis.

[0007] Preferably, the folding frame is provided with several top frames, and each top frame is provided with a top wheel that is rotatably connected to the top frame. The axis of the top wheel is horizontal and passes through the main rotating shaft. The top tip of the top wheel contacts the folding base frame.

[0008] Preferably, the number of guide base plates is N, the number of cylinders is 3N, and each guide base plate corresponds to 3 cylinders. In the corresponding guide base plate and cylinders: the cylinders are located below the guide base plate. In a guide base plate: the lowest point of the guide base plate near the shaping space is at a higher height than the highest point of the guide base plate away from the shaping space.

[0009] Preferably, the assembly also includes a guide roller assembly located between the W-shaped folding structure and the nonwoven fabric roller. The guide roller assembly includes a first roller rotatably connected to the roller frame and a second roller rotatably connected to the roller frame. The first roller, the second roller, and the nonwoven fabric roller are all parallel. The nonwoven fabric output direction is horizontal and perpendicular to the nonwoven fabric roller. The nonwoven fabric roller, the first roller, the second roller, and the W-shaped folding structure are arranged sequentially along the nonwoven fabric output direction. The lowest point of the first roller is lower than the lowest point of the nonwoven fabric wound on the nonwoven fabric roller, and the highest point of the second roller is lower than the lowest point of the guide base plate.

[0010] The beneficial effects of this utility model are: it can continuously fold rolls of non-woven fabric, and can form multiple fold lines in one direction in one go. In addition, the relative position and angle of the folding mechanism in the horizontal direction can be adjusted, the adjustment operation is simple, and it can meet the folding needs of different fold positions, with high overall efficiency; it can automatically press and shape the fold lines, and flatten the folded multi-layer non-woven fabric, with high folding efficiency and stable output; it can adapt to non-woven fabrics of different thicknesses and different numbers of folds. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a bottom view of the present invention; Figure 3 This is a schematic diagram of the W-shaped folding structure of this utility model; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 This is a partial structural schematic diagram of the present invention; Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0012] Reference numerals: 1. Folding frame; 101. Casters; 102. Rolling wheels; 103. Main shaft; 104. Cylinder; 2. Roller frame; 201. Non-woven fabric roller; 401. Folding base frame; 402. Plate gap; 402a. Guide vertical plate; 403. Plate gap; 403a. Shaping roller; 5. Shaping space; 5a. Inner shaft; 501. Shaft seat block; 502. Strip hole; 502a. Fixing block; 503. Fixing screw; 504. Top frame; 601. Top wheel; 602. First roller; 701. Second roller; 702. Detailed Implementation

[0013] 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.

[0014] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, A W-shaped folding device for folding nonwoven fabric includes a folding frame 1, a roller frame 2, a W-shaped folding structure disposed on the folding frame 1, and a nonwoven fabric roller 3 rotatably connected to the roller frame 2 and driven by a roller motor. The bottom of the folding frame 1 is provided with two universal wheels 101 and at least one rolling wheel 102. The universal wheels 101 are equipped with brakes. The W-shaped folding structure is mounted on the folding frame 1 via a main rotating shaft 103. The main rotating shaft 103 is rotatably connected to the folding frame 1. The W-shaped folding structure includes a folding base frame 401 fixed to the main rotating shaft 103, several guide base plates 402 located above the folding base frame 401, and several guide vertical plates 403 fixed relative to the folding base frame 401. The folding base frame 401 is provided with several locking screws that can press the folding frame 1. Each guide vertical plate 403 is arranged sequentially along the circumference of the main rotating shaft 103. The included angle between any two adjacent guide vertical plates 403 is the same, and the included angle between adjacent guide vertical plates 403 is M degrees, 10 < M < 30. Each guide bottom plate 402 is arranged sequentially along the circumference of the main rotating shaft 103. A plate gap 402a is formed between adjacent guide bottom plates 402. The plate gap 402a corresponds one-to-one with the guide vertical plate 403, and the guide vertical plate 403 is located at the corresponding plate gap 402a. The folding frame 1 is equipped with a number of cylinders 104 for moving each drive guide base plate 402 up and down relative to each guide vertical plate 403, and the number of guide vertical plates 403 is at least 2.

[0015] The nonwoven fabric roller 3 is equipped with a nonwoven fabric roll (the nonwoven fabric is wound on the nonwoven fabric roller 3), which lowers the guide base plate 402 so that the highest point of the guide base plate 402 is lower than the lowest point of the guide vertical plate 403. Before folding the nonwoven fabric using this invention, the worker first pulls the free end of the nonwoven fabric out of the nonwoven fabric roll, allowing the free end of the nonwoven fabric to pass below each guide vertical plate 403 and above each guide base plate 402.

[0016] When this invention begins operation, the guide base plates 402 are first raised, and the guide vertical plates 403 reach a state where they "pass through the gap 402a" (the upper end of the guide vertical plate 403, the highest point of the guide base plate 402, and the lower end of the guide vertical plate 403 are arranged sequentially from top to bottom). In this way, the non-woven fabric (located in the areas of the guide base plate 402 and the guide vertical plate 403) is folded into a W-shaped form. It is important to emphasize that this W-shaped folding effect does not mean that the non-woven fabric can only be folded downwards twice and upwards once to perfectly correspond to a W shape. Rather, it can be folded downwards multiple times and upwards multiple times, as long as the folds are alternating between upward and downward folds. In other words, multiple consecutive W-shaped folds can be formed.

[0017] During the folding process, the free end of the nonwoven fabric can be pulled forward manually or by machine (if pulled by machine, existing technologies such as clamping rollers can be used to clamp and pull the nonwoven fabric forward), while the nonwoven fabric roll continuously rotates to release the nonwoven fabric (the roller motor drives the nonwoven fabric roller 3 to release the nonwoven fabric). The nonwoven fabric between the free end of the nonwoven fabric and the nonwoven fabric roll is taut, so the nonwoven fabric will be continuously folded in a W shape.

[0018] When needed, the relative position between the entire W-shaped folding structure and the nonwoven fabric can be changed by moving the folding frame 1 (which has two casters 101 and at least one roller 102 at its bottom, with brakes on the casters 101); or the relative position between the W-shaped folding structure and the folding frame 1 can be changed by rotating the folding base 401 (and then locking the folding base 401 with locking screws); thus, the position of the folds on the nonwoven fabric can be changed to meet different needs.

[0019] The folding frame 1 is provided with two vertically arranged shaping rollers 5, which are rotatably connected to the folding frame 1, and a shaping space 5a is formed between the two shaping rollers 5; In a guide vertical plate 403: one end of the guide vertical plate 403 is the guide front end, and the other end of the guide vertical plate 403 is the guide rear end; the guide rear end is located between the guide front end and any shaping roller 5; In two adjacent guide vertical plates 403: the distance between the two guide rear ends is less than the distance between the two guide front ends.

[0020] The shaping space 5a allows the nonwoven fabric to approach a "folded and flattened" state, serving to shape the creases and the folded state. In addition, the two shaping rollers 5 tightly clamp the nonwoven fabric, ensuring that the folded nonwoven fabric maintains its state and is less prone to excess wrinkles, resulting in more stable output.

[0021] The shaping roller 5 is rotatably connected to the folding frame 1 via an inner shaft 501 disposed on the shaping roller 5. In one shaping roller 5: the shaping roller 5 is sleeved on the inner shaft 501 and rotatably connected to the inner shaft 501. The folding frame 1 is provided with two shaft seat groups that correspond one-to-one with the inner shaft 501. The shaft seat group includes two shaft seat blocks 502, and the shaft seat blocks 502 are provided with fixing blocks 503. In the corresponding inner shaft 501 and shaft seat assembly: a shaft seat block 502, any shaping roller 5 and another shaft seat block 502 are arranged sequentially from top to bottom. The shaft seat block 502 is provided with a vertically oriented strip hole 502a in the depth direction. The inner shaft 501 is slidably engaged with the strip hole 502a. The sliding direction of the inner shaft 501 is horizontal. The sliding direction of the inner shaft 501, the length direction of the upper strip hole 502a and the length direction of the lower strip hole 502a are all parallel. The fixing block 503 is provided with a fixing screw 504 that is threadedly engaged with the fixing block 503. The fixing screw 504 presses against one side of the inner shaft 501. One end of the length direction of the strip hole 502a is the limiting end, and the other end of the length direction of the strip hole 502a is the allowance end. The limiting end is in contact with the side of the inner shaft 501. The limiting end and the fixing screw 504 are located on opposite sides of the axis of the inner shaft 501.

[0022] When it is necessary to change the distance between the two shaping rollers 5, a pad can be added between the limiting end and the inner shaft 501, so that the width of the shaping space 5a can be varied. This utility model can adapt to non-woven fabrics of different thicknesses and non-woven fabrics with different folding layers.

[0023] The folding frame 1 is provided with a plurality of top frames 601, and the top frames 601 are provided with top wheels 602 that are rotatably connected to the top frames 601. The axis of the top wheels 602 is horizontal and passes through the main rotating shaft 103. The top of the top wheels 602 contacts the folding base frame 401.

[0024] The folding frame 401 and the top wheel 602 are well-matched, which makes it easier to adjust the folding frame 401 (the folding frame 401 rotates together with the main shaft 103, thereby adjusting the relative position of the folding frame 401).

[0025] The number of guide base plates 402 is N, and the number of cylinders 104 is 3N. Each guide base plate 402 corresponds to 3 cylinders 104. In the corresponding guide base plate 402 and cylinder 104: the cylinder 104 is located below the guide base plate 402. In a guide base plate 402: the lowest point of the guide base plate 402 adjacent to the shaping space 5a is at a higher height than the highest point of the guide base plate 402 away from the shaping space 5a.

[0026] The cylinder 104 can be replaced with other lifting structures in the prior art. In this utility model, the cylinder 104 drives the guide base plate 402 to rise and fall. The lowest point of the guide base plate 402 near the shaping space 5a is at a higher height than the highest point of the guide base plate 402 away from the shaping space 5a. This means that the nonwoven fabric needs to rise as a whole when passing through the W-shaped folding structure, which is more conducive to ensuring that the nonwoven fabric passing through the W-shaped folding structure is in a taut state, thereby ensuring the folding effect.

[0027] Explanation: If the nonwoven fabric descends as it passes through the W-shaped fold structure, and if an unexpected factor causes the free end of the nonwoven fabric to suddenly lose tension, the nonwoven fabric will continue to move forward, resulting in unnecessary folding and waste. If the nonwoven fabric ascends as it passes through the W-shaped fold structure, and an unexpected factor causes the free end of the nonwoven fabric to suddenly lose tension, the nonwoven fabric will not continue to move forward.

[0028] It also includes a guide roller assembly located between the W-shaped folding structure and the nonwoven fabric roller 3. The guide roller assembly includes a first roller 701 rotatably connected to the roller frame 2 and a second roller 702 rotatably connected to the roller frame 2. The first roller 701, the second roller 702 and the nonwoven fabric roller 3 are all parallel. The nonwoven fabric output direction is horizontal and perpendicular to the nonwoven fabric roller 3. The nonwoven fabric roller 3, the first roller 701, the second roller 702 and the W-shaped folding structure are arranged sequentially along the nonwoven fabric output direction. The lowest point of the first roller 701 is lower than the lowest point of the nonwoven fabric wound on the nonwoven fabric roller 3. The highest point of the second roller 702 is lower than the lowest point of the guide base plate 402.

[0029] The free end of the nonwoven fabric first passes under the first roller 701, then passes under the second roller 702, and then enters between the bottom of each guide plate 403 and the top of each guide base plate 402. This makes it easier to smooth out wrinkles, ensure the tension of the nonwoven fabric, improve the stability of the folding process, and ensure the folding effect.

[0030] 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 W-shaped folding device for folding nonwoven fabrics, characterized in that, It includes a folding frame, a roller frame, a W-shaped folding structure mounted on the folding frame, and a non-woven fabric roller that is rotatably connected to the roller frame and driven by a roller motor; The bottom of the folding frame is equipped with two universal wheels and at least one rolling wheel. The universal wheels are equipped with brakes. The W-shaped folding structure is mounted on the folding frame via a main rotating shaft. The main rotating shaft is rotatably connected to the folding frame. The W-shaped folding structure includes a folding base fixed to the main rotating shaft, several guide bottom plates located above the folding base, and several guide vertical plates fixed relative to the folding base. The folding base is equipped with several locking screws that can press the folding frame. Each guide vertical plate is arranged sequentially along the circumference of the main rotation axis. The included angle between any two adjacent guide vertical plates is the same. The included angle between adjacent guide vertical plates is M degrees, 10 < M < 30. Each guide bottom plate is arranged sequentially along the circumference of the main rotation axis. A plate gap is formed between adjacent guide bottom plates. The plate gap corresponds one-to-one with the guide vertical plate, and the guide vertical plate is located at the corresponding plate gap. The folding frame is equipped with several cylinders for moving each drive guide base plate up and down relative to each guide vertical plate, and the number of guide vertical plates is at least 2.

2. The W-shaped folding device for folding nonwoven fabrics according to claim 1, characterized in that, The folding frame is equipped with two vertically arranged shaping rollers, which are rotatably connected to the folding frame, and a shaping space is formed between the two shaping rollers; In a guide vertical plate: one end of the guide vertical plate is the guide front end, and the other end of the guide vertical plate is the guide rear end; the guide rear end is located between the guide front end and any shaping roller; In two adjacent guide plates: the distance between the two guide rear ends is less than the distance between the two guide front ends.

3. A W-shaped folding device for folding nonwoven fabrics according to claim 2, characterized in that, The shaping roller is rotatably connected to the folding frame via an inner shaft mounted on the shaping roller. In one shaping roller: the shaping roller is sleeved on the inner shaft and rotatably connected to the inner shaft. The folding frame is provided with two shaft seat groups that correspond one-to-one with the inner shaft. The shaft seat group includes two shaft seat blocks, and a fixing block is provided on the shaft seat block. In the corresponding inner shaft and bearing assembly: a bearing block, any shaping roller, and another bearing block are arranged sequentially from top to bottom. The bearing block has a vertically oriented strip hole in the depth direction. The inner shaft slides into the strip hole. The sliding direction of the inner shaft is horizontal. The sliding direction of the inner shaft, the length direction of the upper strip hole, and the length direction of the lower strip hole are all parallel. The fixing block has a fixing screw that is threaded into the fixing block. The fixing screw presses against one side of the inner shaft. One end of the strip hole in the length direction is the limiting end, and the other end of the strip hole in the length direction is the allowance end. The limiting end is in contact with the side of the inner shaft. The limiting end and the fixing screw are located on opposite sides of the inner shaft axis.

4. A W-shaped folding device for folding nonwoven fabrics according to claim 1, 2, or 3, characterized in that, The folding frame is provided with several top frames, and each top frame is provided with a top wheel that is rotatably connected to the top frame. The axis of the top wheel is horizontal and passes through the main rotating shaft. The top of the top wheel contacts the folding base frame.

5. A W-shaped folding device for folding nonwoven fabrics according to claim 1, 2, or 3, characterized in that, The number of guide base plates is N, and the number of cylinders is 3N. Each guide base plate corresponds to 3 cylinders. In the corresponding guide base plate and cylinders: the cylinders are located below the guide base plate. In a guide base plate: the lowest point of the guide base plate near the shaping space is at a higher height than the highest point of the guide base plate away from the shaping space.

6. A W-shaped folding device for folding nonwoven fabrics according to claim 1, 2, or 3, characterized in that, It also includes a guide roller assembly located between the W-shaped folding structure and the nonwoven fabric roller. The guide roller assembly includes a first roller rotatably connected to the roller frame and a second roller rotatably connected to the roller frame. The first roller, the second roller, and the nonwoven fabric roller are all parallel. The nonwoven fabric output direction is horizontal and perpendicular to the nonwoven fabric roller. The nonwoven fabric roller, the first roller, the second roller, and the W-shaped folding structure are arranged sequentially along the nonwoven fabric output direction. The lowest point of the first roller is lower than the lowest point of the nonwoven fabric wound on the nonwoven fabric roller. The highest point of the second roller is lower than the lowest point of the guide base plate.

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