Tissue paper processing apparatus

Abstract

The utility model discloses a kind of paper processing equipment for daily use, including the folding component for folding initial web, the folding component includes guide roller, folding plate and folding roller;The guide roller is the arc-shaped roller of middle convex, is configured to rotate along first rotation axis;The folding roller is tapered, is configured to rotate along second rotation axis;The folding plate is located between guide roller and folding roller, including a pair of guide edge along a midline symmetry and in tapered form setting, the midline is inclined to second rotation axis and with second rotation axis common definition first plane, first rotation axis is perpendicular to first plane;The folding roller is tapered, including small end and big end, wherein the small end is configured to be away from guide roller, by the above setting, one aspect can flatten web, two aspects make that front fold angle of folding web is subjected to smaller extrusion stress, to reduce front fold angle breakage.

Description

Technical Field

[0001] This utility model relates to a device for processing household paper. Background Technology

[0002] The use of household paper is becoming increasingly widespread, and it has become an indispensable necessity for people's lives. With the improvement of living standards, people have put forward more diverse demands for paper. In some situations, people hope that paper will have a thicker feel. In order to meet people's needs, more and more products use a structure of four or more layers, such as the multi-layer structure shown in documents such as CN211138321U.

[0003] However, traditional multi-layer structures usually require a large number of unwinding frames, making the processing equipment for tissue paper very large. Therefore, some existing technologies propose folding two layers of paper to form a four-layer product or folding a single layer of paper twice to form a four-layer product. Generally, folding boards can be used for narrower paper widths, and devices similar to those shown in document CN223357039U can be used for wider paper widths. However, in practice, it has been found that when folding multi-layer paper with a width of 1800mm or more, problems such as unstable paper position, paper wrinkles, and damage to adjacent or folded positions are likely to occur.

[0004] Therefore, existing technologies need to be improved to solve the aforementioned technical problems. Utility Model Content

[0005] Therefore, this utility model provides a paper processing equipment for household paper to solve the above-mentioned technical problems.

[0006] A tissue paper processing device includes a folding assembly for folding an initial paper web, the folding assembly including a guide roller, a folding plate, and a folding roller; The guide roller is a convex arc-shaped roller, configured to rotate along a first rotation axis; The folding roller is conical and configured to rotate along a second rotation axis; The folding plate is disposed between the guide roller and the folding roller, and includes a pair of guide edges that are symmetrically arranged along a center line and are arranged in a tapering manner. The center line is inclined to the second rotation axis and together with the second rotation axis defines a first plane. The first rotation axis is perpendicular to the first plane. The folding roller includes a small end and a large end, wherein the small end is configured to be away from the guide roller.

[0007] The taper of the folding roller is 1:100 to 120.

[0008] The pair of guide edges includes a first guide edge and a second guide edge, both of which are convex arc-shaped edges.

[0009] The first guide edge and the second guide edge intersect at a vertex, and the vertex points towards the folding roller.

[0010] The first guide edge includes the end adjacent to the guide roller. A virtual straight line is defined as the straight line connecting the vertex and the end. The first guide edge includes a convex point, which is the point on the first guide edge that is the furthest from the virtual straight line. Therefore, the distance between the convex point and the virtual straight line is greater than or equal to 5mm.

[0011] The initial paper web includes a left side and a right side. The left side passes through a first guide edge and bends on the first guide edge. When the left side passes through the first guide edge, the left side covers the protruding point.

[0012] The left side portion includes a left side line that abuts against the first guide edge, the left side line includes the left end point adjacent to the guide roller, and the distance between the vertex and the protrusion point is greater than the distance between the left end point and the protrusion point.

[0013] Wherein, the distance between the left endpoint and the protruding point is greater than or equal to 100mm.

[0014] The guide roller includes the outer diameter point with the largest diameter, which is located on the first plane. At the same time, the vertex is also located on the first plane.

[0015] The initial paper web has at least two single-layer paper layers and a width of at least 1000 mm. The initial paper web is conveyed along a first direction by guide rollers, folded by a folding plate, and then conveyed along a second direction to the downstream direction by folding rollers. The first direction is perpendicular to the second direction.

[0016] Beneficial Effects: This utility model provides a tissue paper processing device, including a folding assembly for folding an initial paper web. The folding assembly includes a guide roller, a folding plate, and a folding roller. The guide roller is a convex arc-shaped roller configured to rotate along a first rotation axis. The folding roller is conical and configured to rotate along a second rotation axis. The folding plate is disposed between the guide roller and the folding roller, and includes a pair of guide edges symmetrically arranged along a centerline and tapering in a gradually decreasing manner. The centerline is inclined to the second rotation axis and together with the second rotation axis defines a first plane, which is perpendicular to the first plane. The folding roller is conical, including a small end and a large end, wherein the small end is configured away from the guide roller. This configuration allows the paper web to be flattened and reduces the squeezing force on the front fold angle of the folded paper web, thereby reducing damage to the front fold angle. Attached Figure Description

[0017] Figure 1 A schematic diagram of a tissue paper processing device according to the first embodiment of this utility model; Figure 2 for Figure 1 A top-down view; Figure 3 for Figure 2 A schematic diagram of the folding rollers in the diagram; Component descriptions in the diagram: Household paper processing equipment 10; First plane 100; First direction 101; Second direction 102; Initial paper web 11; Front fold angle 111; Rear fold angle 112; Left side 113; Left side line 1131; Left end point 1132; Right side 114; Folded paper web 12; Guide roller 21; First rotation axis 210; Folding plate 22; Center line 220; First guide edge 221; Virtual straight line 2210; Protruding point 2211; End point 2212; Folding roller 23; Second rotation axis 230; Small end 231; Large end 232. Detailed Implementation

[0018] Please refer to Figures 1 to 3 This utility model provides a tissue paper processing device 10 for processing multi-layer tissue paper webs. The processing includes folding, rolling, embossing, and slitting. The tissue paper processing device 10 includes a folding assembly for folding an initial tissue paper web 11. The initial tissue paper web 11 can be a tissue paper web. Preferably, the initial tissue paper web 11 has at least two single-layer paper layers and a width of at least 1000 mm. More preferably, the initial tissue paper web 11 has a width of at least 1800 mm. Even more preferably, the width of the initial tissue paper web 11 is greater than or equal to 2800 mm.

[0019] It is understood that the paper layer can be a sheet formed of cellulose fiber paper. In other embodiments, the paper layer can also be made of non-woven fabric, dust-free paper, plastic film, etc., and there are no restrictions here.

[0020] Understandably, an unwinding device can be provided upstream of the folding assembly to lay the initial paper web 11 onto the folding assembly, and components such as an embossing device, a folding device, and a slitting device can be provided downstream of the folding assembly to perform embossing, secondary folding, and slitting on the folded paper web 12 formed by the folding process of the folding assembly.

[0021] The folding assembly includes a guide roller 21, a folding plate 22, and a folding roller 23.

[0022] In this embodiment, the folding roller 23 is mounted on the frame and configured to rotate along the first rotation axis 210. The folding roller 23 is located downstream of the guide roller 21 and configured to rotate along the second rotation axis 230, which is perpendicular to the first rotation axis 210. The folding plate 22 is disposed between the guide roller 21 and the folding roller 23 and is used to fold the initial paper width conveyed by the guide roller 21 to form a folded paper width 12 in a folded shape.

[0023] In this embodiment, the folding plate 22 includes a pair of guide edges symmetrically arranged along a center line 220 and in a tapering manner. Specifically, the pair of guide edges includes a first guide edge 221 and a second guide edge. The distance between the first guide edge 221 and the second guide edge gradually decreases from the guide roller 21 toward the folding roller 23 to form the tapering shape. Simultaneously, this arrangement makes the folding edge approximately an isosceles triangle, with the first guide edge 221 and the second guide edge forming the isosceles sides of the isosceles triangle. The center line 220 is... The pair of isosceles axes of symmetry, and the centerline 220 is inclined to the second rotation axis 230 and together with the second rotation axis 230 defines the first plane 100. The first rotation axis 210 is perpendicular to the first plane 100, so that the initial paper web 11 is conveyed along the first direction 101 by the guide roller 21, folded by the folding plate 22, and then conveyed along the second direction 102 by the folding roller 23 to the downstream direction. The first direction 101 is perpendicular to the second direction 102. This layout makes the initial paper web 11 stably form the folded paper web 12.

[0024] Furthermore, the first guide edge 221 intersects the second guide edge at a vertex, and the vertex points towards the folding roller 23.

[0025] Furthermore, the first guide edge 221 and the second guide edge define a second plane, which is inclined to the horizontal plane. At the same time, the first rotation axis 210 is parallel to the horizontal plane, and the second rotation axis 230 is parallel to the horizontal plane.

[0026] In this embodiment, the guide roller 21 is a convex arc-shaped roller, and the folding roller 23 is conical, including a small end 231 and a large end 232. The small end 231 is configured away from the guide roller 21. It can be understood that the convex arc-shaped roller causes the guide roller 21 to form a flattening roller, flattening the initial paper web 11 conveyed by the guide roller 21 once, and then moving it to the folding plate 22. The initial paper web 11 includes a left side portion 113 and a right side portion 114, wherein the left side portion 113 is the first... After bending at guide edge 221, the paper moves downstream. Simultaneously, the right side portion 114 bends at the second guide edge and moves downward, forming a fold with the left side portion 113 at the folding roller 23, so that the initial paper web 11 forms a folded paper web 12. When the folded paper web 12 enters the folding roller 23, the front end of the folded paper web 12 forms a forward fold angle 111, and the rear end forms a backward fold angle 112, where the paper ends 2212 are stacked. The folding roller 23 is set in a conical shape, and the small end 231 is configured as follows: Away from guide roller 21, the smaller end 231 of the folding roller 23 has a smaller diameter than the larger end 232, resulting in less pressure on the front fold angle 111 of the folded paper web 12, thus reducing breakage of the front fold angle 111. Further research revealed that for four layers of tissue paper with a total thickness of 0.4–1.2 mm, setting the taper of the folding roller 23 to 1:100–120 can reduce breakage of the front fold angle 111 by 37%. Simultaneously, since the rear fold angle 112 is the overlap of the end 2212 of the middle paper layer of the folded paper web 12, on the one hand… Since it is only a stack of paper layers, this position will not be subjected to compression. Therefore, with the small end 231 being smaller than the large end 232, it will not affect the rear folding angle 112. Furthermore, since the rear folding angle 112 is subjected to greater pressure than the front folding angle 111, it can ensure that the folded paper web 12 forms a stable shape after folding, and it is not easy for delamination to occur in subsequent processing. When the taper is set to 1:100 to 120, the delamination phenomenon in subsequent processing is reduced by an average of 18.5%.

[0027] Furthermore, the guide roller 21 includes the outer diameter point with the largest diameter, which is located on the first plane 100. At the same time, the vertex is also located on the first plane 100. In this arrangement, on the one hand, the guide roller 21 can stably flatten the initial paper web 11 and reduce wrinkles on the paper web. On the other hand, it can make the left side 113 and the right side 114 the same width, that is, it can stably form a folded shape.

[0028] Furthermore, both the first guide edge 221 and the second guide edge are convex arc-shaped edges, so that the first guide edge 221 and the second guide edge also have a flattening effect, thereby allowing the left side portion 113 and the right side portion 114 to be flattened a second time after passing through the first guide edge 221 and the second guide edge, further reducing paper wrinkles.

[0029] Furthermore, the first guide edge 221 includes the end 2212 adjacent to the guide roller 21. A virtual straight line 2210 is defined as the straight line connecting the vertex and the end 2212. The first guide edge 221 includes a protruding point 2211. The protruding point 2211 is the point on the first guide edge 221 that is the furthest from the virtual straight line 2210. Therefore, the distance between the protruding point 2211 and the virtual straight line 2210 is greater than or equal to 5mm.

[0030] Furthermore, when the left side portion 113 passes the first guide edge 221, the left side portion 113 covers the protruding point 2211.

[0031] Furthermore, the left side portion 113 includes a left edge line 1131, which is a connection line where the left side portion 113 abuts against the first guide edge 221 and bends. The left edge line 1131 includes a pair of endpoints, wherein the endpoint away from the guide roller 21 coincides with the vertex. The endpoint adjacent to the guide roller 21 is defined as the left endpoint 1132. The distance between the left endpoint 1132 and the protrusion point 2211 is greater than or equal to 100mm, so that the left side portion 113 can be stably flattened.

[0032] Furthermore, the distance between the vertex and the protruding point 2211 is greater than the distance between the left end point 1132 and the protruding point 2211, so that the left side 113 tends to stretch away from the guide roller 21, thereby helping to flatten the left side 113 a second time and enabling the initial paper web 11 to deform stably at the vertex and bend downward.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tissue paper processing device, comprising a folding assembly for folding an initial paper web, characterized in that, The folding assembly includes guide rollers, folding plates, and folding rollers; The guide roller is a convex arc-shaped roller, configured to rotate along a first rotation axis; The folding roller is conical and configured to rotate along a second rotation axis; The folding plate is disposed between the guide roller and the folding roller, and includes a pair of guide edges that are symmetrically arranged along a center line and are arranged in a tapering manner. The center line is inclined to the second rotation axis and together with the second rotation axis defines a first plane. The first rotation axis is perpendicular to the first plane. The folding roller includes a small end and a large end, wherein the small end is configured to be away from the guide roller.

2. The tissue paper processing equipment as described in claim 1, characterized in that, The taper of the folding roller is 1:100 to 120.

3. The tissue paper processing equipment as described in claim 2, characterized in that, The pair of guide edges includes a first guide edge and a second guide edge, both of which are convex arc-shaped edges.

4. The tissue paper processing equipment as described in claim 3, characterized in that, The first guide edge and the second guide edge intersect at a vertex, and the vertex points towards the folding roller.

5. The tissue paper processing equipment as described in claim 4, characterized in that, The first guide edge includes the end adjacent to the guide roller. A virtual straight line is defined as the straight line connecting the vertex and the end. The first guide edge includes a convex point, which is the point on the first guide edge that is the furthest from the virtual straight line. Therefore, the distance between the convex point and the virtual straight line is greater than or equal to 5mm.

6. The tissue paper processing equipment as described in claim 5, characterized in that, The initial paper web includes a left side and a right side. The left side passes through a first guide edge and bends on the first guide edge. When the left side passes through the first guide edge, the left side covers the protruding point.

7. The tissue paper processing equipment as described in claim 6, characterized in that, The left side portion includes a left side line that abuts against the first guide edge, the left side line includes the left end point adjacent to the guide roller, and the distance between the vertex and the protrusion point is greater than the distance between the left end point and the protrusion point.

8. The tissue paper processing equipment as described in claim 7, characterized in that, The distance between the left endpoint and the protruding point is greater than or equal to 100mm.

9. The tissue paper processing equipment as described in claim 8, characterized in that, The guide roller includes the outer diameter point with the largest diameter, which is located on the first plane. At the same time, the vertex is also located on the first plane.

10. The tissue paper processing equipment as described in claim 1, characterized in that, The initial paper web has at least two single-layer paper layers and a width of at least 1000 mm. The initial paper web is conveyed along a first direction by guide rollers, folded by a folding plate, and then conveyed along a second direction by folding rollers to the downstream direction. The first direction is perpendicular to the second direction.

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