A paper cutting and folding device suitable for daily paper

Abstract

The utility model discloses a cutting and folding device suitable for daily paper, comprising a pair of tangent and closely arranged paper cutting rollers and a pair of tangent and closely arranged paper folding rollers, wherein fixed knives for respectively cooperating and cutting two paths of base paper are arranged adjacent to the peripheries of the two paper cutting rollers, so that the two paths of base paper are respectively cut to form a plurality of staggered and stacked paper segments; one of the paper folding rollers is tangent and closely arranged to one of the paper cutting rollers, and the distance between the roller surfaces of the paper folding rollers from the tangent point between the paper folding roller and the paper cutting roller to the tangent point between the two paper folding rollers is not longer than the length of a single paper segment.

Description

Technical Field

[0001] The utility model relates to the technical field of paper towel production equipment, in particular to a paper cutting and folding device suitable for daily paper. Background Art

[0002] In the field of household paper production, especially for boxed paper, a pair of folding rollers are usually used to fold several pre-cut paper segments. A paper-breaking roller is usually used in conjunction with a fixed knife to periodically and continuously cut a path of base paper to form paper segments. After the paper segments are cut, they need to be transferred from the paper-breaking roller to the folding roller. However, during this process, the paper segments are prone to displacement due to the lack of effective traction, which in turn affects the subsequent folding and easily causes quality abnormalities such as offset, misalignment, and unevenness. Therefore, if the existing roller structure can be improved to facilitate the traction effect during the transfer process, the folding quality of the finished product can be greatly improved. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a paper cutting and folding device suitable for daily paper.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a cutting and folding device suitable for daily paper, comprising a pair of tangentially closely arranged paper cutting rollers and a pair of tangentially closely arranged paper folding rollers, wherein fixed knives for respectively cooperating and cutting two paths of base paper are arranged adjacent to the periphery of the two paper cutting rollers, so that the two paths of base paper are respectively cut into a plurality of staggered and stacked paper segments, one of the paper folding rollers is tangentially closely arranged with one of the paper cutting rollers; at least N bottom knives are arranged around the roller surface of each of the paper cutting rollers, wherein N≥4; at least M paper folding grooves are arranged on the roller surface of each of the paper folding rollers, wherein N>M≥3 and N and M are not integer multiples.

[0005] Furthermore, the roller surface distance between the tangent point between the paper folding roller and the paper breaking roller and the tangent point between the two paper folding rollers is not longer than the length of a single paper segment.

[0006] Furthermore, the diameters and widths of the two paper folding rollers are equal, and the diameters and widths of the two paper cutting rollers are equal.

[0007] Furthermore, the diameter width of the paper folding roller is smaller than the diameter width of the paper breaking roller.

[0008] The utility model adopts the above-mentioned scheme, and its beneficial effect lies in: adopting the single paper segment length ≥ the roller surface distance between the two tangent points to ensure that any paper segment can always be subjected to the pressure and traction effect of the paper breaking roller and the paper folding roller or one of the pressure and traction effects between the two paper folding rollers during the transfer from the transfer gap to the paper folding gap, effectively avoiding the problem of the paper segment being displaced due to unrestricted movement along the roller surface of the paper folding roller, thereby improving the folding quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematic diagram of cutting origami device.

[0010] Among them, 1-paper breaking roller, 2-paper folding roller, 11-bottom knife, 21-paper folding groove, 3-fixed knife, A-roller surface distance. DETAILED DESCRIPTION

[0011] In order to facilitate the understanding of the present invention, the present invention is described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0012] See attached Figure 1 As shown, in this embodiment, a cutting and folding device suitable for daily paper includes a pair of tangentially closely arranged paper cutting rollers 1 and a pair of tangentially closely arranged paper folding rollers 2, wherein fixed knives 3 for respectively cooperating with and cutting two paths of base paper are arranged adjacent to the periphery of the two paper cutting rollers 1. Specifically, each paper cutting roller 1 of this embodiment corresponds to cooperating with a fixed knife 3 to cut one path of base paper to form a plurality of equal-length paper segments, thereby, the two paths of base paper are respectively transferred to the two paper cutting rollers 1, and the two paths of base paper are cut into a plurality of paper segments by means of the two paper cutting rollers 1 respectively cooperating with the two fixed knives 3, and the two paper segments meet at the tangential position of the roller surfaces of the two paper cutting rollers 1 to be staggered and stacked.

[0013] In this embodiment, at least N bottom knives 11 are arranged around the roller surface of each paper-breaking roller 1, wherein N≥2, and as the paper-breaking roller 1 rotates, any of the bottom knives 11 cooperates with the fixed knife 3 to cut the base paper. Preferably, N is 4, that is, four bottom knives 11 are arranged around the roller surface of the paper-breaking roller 1 in this embodiment, and a cutting gap is formed between the roller surface of the paper-breaking roller 1 and the fixed knife 3 for a path of base paper to pass through, and any bottom knives 11 will cooperate with the fixed knife 3 to achieve the cutting operation of the base paper as the paper-breaking roller 1 rotates to the cutting gap, and then, when the paper-breaking roller 1 rotates one circle, the four bottom knives 11 will cooperate with the fixed knife 3 in sequence to cut, thereby forming four paper segments, and in this cyclic action, the two paper-breaking rollers 1 respectively cooperate with the fixed knife 3 to achieve the continuous cutting operation of the two paths of base paper.

[0014] In this embodiment, a pair of folding rollers 2 are arranged tangentially and closely to form a folding gap between the roller surfaces of the two folding rollers 2, and a plurality of paper segments arranged in an interlaced and stacked manner are transferred to the folding gap for interleaving and folding, and finally stacked at the position below the folding gap to form a paper pile. Specifically, each of the folding rollers 2 of this embodiment is provided with at least M folding grooves 21 on the roller surface, wherein each folding groove 21 is provided with a corresponding adsorption hole for forming a negative pressure effect (any adsorption hole can be connected to an external negative pressure vacuum device by means of an air flow channel in the folding roller 2), and the negative pressure traction effect of the adsorption hole is used to realize the folding operation of a pair of folding rollers 2. The above structure and principle belong to conventional technical means and will not be elaborated here.

[0015] In this embodiment, one of the paper folding rollers 2 is arranged tangentially and closely to one of the paper breaking rollers 1. Figure 1 For example, the folding roller 2 located on the left side is arranged tangent to and closely to the paper breaking roller 1 located on the right side to form a transfer gap for the paper supply segment to pass through, and the folding roller 2 is located below the paper breaking roller 1. Secondly, the roller surface distance A between the tangent point between the folding roller 2 and the paper breaking roller 1 and the tangent point between the two folding rollers 2 (equivalent to the roller surface distance A from the transfer gap to the folding gap) of the folding roller 2 is not longer than the length of a single paper segment, that is: the length of a single paper segment ≥ the roller surface distance A between the two tangent points, so as to ensure that any paper segment can always be subjected to the counter-pressure traction effect of the paper breaking roller 1 and the folding roller 2 or one of the counter-pressure traction effects between the two folding rollers 2 during the transfer from the transfer gap to the folding gap.

[0016] Specifically, a single paper segment is taken as an example for explanation. The head of the single paper segment is first transferred through the transfer gap, and the single paper segment at this time is subjected to the counter-pressure and traction action of the paper breaking roller 1 and the paper folding roller 2. As the single paper segment is continuously transported along the roller surface of the paper folding roller 2, the head of the paper segment gradually approaches the paper folding gap (the paper segment at this time is only subjected to the counter-pressure and traction action of the paper breaking roller 1 and the paper folding roller 2). Then, the head of the paper segment passes through the paper folding gap and is subjected to the counter-pressure and traction action between the two paper folding rollers 2 (the paper segment at this time is simultaneously subjected to the counter-pressure and traction action of the paper breaking roller 1 and the paper folding roller 2, as well as the two paper folding rollers 2). Finally, the tail end of the paper segment leaves the transfer gap (the paper segment at this time is only subjected to the counter-pressure and traction action of the two paper folding rollers 2). During this process, the paper segment is always subjected to the counter-pressure and traction action, thereby avoiding problems such as the displacement of the paper segment due to unrestricted movement along the roller surface of the paper folding roller 2, thereby avoiding affecting the paper folding effect when the paper segment is transferred to the paper folding gap.

[0017] In this embodiment, the relationship between the paper folding groove 21 and the bottom knife 11 is: N>M≥1 and N and M are non-integer multiples. Preferably, M is 3. As the paper folding roller 2 rotates one circle, the three paper folding grooves 21 on the same paper folding roller 2 will correspondingly cooperate with another paper folding roller 2 to complete three folding actions. The paper folding groove 21 and the bottom knife 11 adopt this non-integer multiple structural design, thereby further ensuring that any length of each paper segment can be subjected to the pressure and traction effect.

[0018] In this embodiment, the diameters and widths of the two paper folding rollers 2 are equal, and the diameters and widths of the two paper breaking rollers 1 are equal, wherein the diameters and widths of the paper folding rollers 2 are smaller than the diameters and widths of the paper breaking rollers 1. The paper folding rollers 2 and the paper breaking rollers 1 adopt the above-mentioned non-equal diameter structural design, thereby further ensuring that any length of each paper segment can be subjected to the counter-pressure traction effect.

[0019] To facilitate understanding, further explanation is given below in conjunction with the specific switching origami process.

[0020] First, two paths of base paper are transferred to two paper breaking rollers 1 respectively, wherein each path of base paper passes through the slitting gap between the paper breaking roller 1 and the fixed knife 3, and is periodically slit by the fixed knife 3 and each bottom knife 11, thereby continuously forming a plurality of paper segments.

[0021] Next, the two paper segments formed by the two paths of base paper are converged at the roller gap between the two paper breaking rollers 1 for staggered stacking, and are continuously transferred along the roller surface of one of the paper breaking rollers 1 to the transfer gap between the paper breaking roller 1 and one of the paper folding rollers 2.

[0022] Subsequently, the two staggered and stacked paper segments are continuously transferred along the roller surface of one of the folding rollers 2 to the folding gap between the two folding rollers 2, wherein any paper segment can always be subjected to the counter-pressure and traction action of the paper breaking roller 1 and the folding roller 2 or the folding roller 2 and the folding roller 2 during this transfer.

[0023] Finally, the two staggered stacked paper segments are inserted and folded in the folding gap between the two folding rollers 2 and finally stacked to form a paper pile.

[0024] The embodiments described above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any technician familiar with the field, without departing from the scope of the technical solution of the present invention, can make more possible changes and modifications to the technical solution of the present invention using the technical content disclosed above, or the modifications are equivalent embodiments of the present invention. Therefore, any equivalent and equivalent changes made according to the idea of ​​the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A paper cutting and folding device suitable for daily paper, characterized in that: The invention comprises a pair of tangentially closely arranged paper-breaking rollers (1) and a pair of tangentially closely arranged paper-folding rollers (2), wherein fixed knives (3) for respectively cooperating with and cutting two paths of base paper are arranged adjacent to the peripheries of the two paper-breaking rollers (1), so that the two paths of base paper are respectively cut into a plurality of staggered and stacked paper segments, and one of the paper-folding rollers (2) is arranged tangentially and closely to one of the paper-breaking rollers (1); at least N bottom knives (11) are arranged around the roller surface of each of the paper-breaking rollers (1), wherein N≥4; and at least M paper-folding grooves (21) are arranged on the roller surface of each of the paper-folding rollers (2), wherein N>M≥3 and N and M are not integer multiples.

2. A paper cutting and folding device suitable for daily paper according to claim 1, characterized in that: The roller surface distance (A) of the paper folding roller (2) between the tangent point of the paper folding roller (2) and the paper breaking roller (1) and the tangent point of the two paper folding rollers (2) is not longer than the length of a single paper segment.

3. A paper cutting and folding device for daily use paper according to claim 1, characterized in that: The diameters and widths of the two paper folding rollers (2) are equal, and the diameters and widths of the two paper cutting rollers (1) are equal.

4. A paper cutting and folding device for daily use paper according to claim 1, characterized in that: The diameter and width of the paper folding roller (2) are smaller than the diameter and width of the paper breaking roller (1).

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