JP2013096035A - Used paper cutting device and method for cutting used paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide and develop a used paper cutting device in a used paper recycling apparatus that cuts a sheet of used paper into any and appropriate sizes of multiple rectangular shapes in longitudinal and cross directions and that is provided in a processable manner and in a condition that fibers of the used paper is possibly remained long, and to provide a method for cutting a used paper.SOLUTION: The used paper cutting device comprises: a used paper vessel having an inner plate at the bottom thereof; a supplying portion composed of a used paper pressurizing mechanism for pressurizing a sheet of used paper and a used paper supplying mechanism for supplying the sheet of used paper, when elevating the inner plate; a plurality of longitudinal direction cutting blades; a rotating shaft for pivotally supporting the longitudinal direction cutting blades; longitudinal direction rotation driving means rotating and driving the rotating shaft; a pair of a used paper pressurizing mechanism and a used paper supplying mechanism vertically provided for preventing more than one sheets of used paper from being supplied; a longitudinal direction cutting mechanism composed of a used paper entanglement preventing mechanism for cutting in the longitudinal direction; a cross direction cutting blade pivotally supported in a direction perpendicular to the supplying direction of the used paper; rotation driving means; cross direction moving means provided such that the cross direction cutting blade can be freely moved in the direction perpendicular to the supplying direction of the used paper; and a cross direction cutting mechanism composed of a cut used paper entanglement preventing mechanism.

Description

    The present invention relates to a used paper cutting device and a used paper cutting method.

    Conventionally, the amount of paper used for newspapers is 3.7 million tons per year, and about 70 kg per year is consumed per household. A large amount of paper is also used for advertisements inserted in magazines and newspapers.

    In recent years, with the aim of becoming “environmentally friendly paper” based on the resource environment, each paper company has been developing technologies for recycling and reducing the weight of used newspaper. Thus, about 60 to 80% is blended and used in newsprint paper materials.

On the other hand, newspapers are becoming lighter and now it is 43 g / m ³ . Waste paper pulp is a black low-quality waste paper pulp that does not remove printing ink. It is used as a raw material for paperboard, cardboard, etc. It is called a raw material for paper that requires whiteness, such as printing paper and toilet paper.

    Further, recycled newspaper fibers containing ink oil are still used as raw materials for bathroom / facial tissues, napkins, and peter towels.

    Therefore, the inventor made recycled paper such as toilet paper using waste paper pulp, especially old newspaper paper, and used this to make recycled paper from waste paper through all the steps in a small device. Developed and filed a playback device. For example, as in Patent Document 1.

Japanese Patent Application No. 2010-210566

    However, it is necessary to install a device for crushing and beating used paper between the manufacturing process of waste paper pulp, which uses this waste paper as a raw material, and the paper making process, which makes waste paper pulp. In addition, it is desirable that the used paper be processed in a state where it is kept as long as possible.

    Furthermore, for this purpose, it is desirable that the used paper be fibrillated, which is a phenomenon in which fibrils (small fibers) inside the fibers become fluffed and rubbed by frictional action in order to be recycled.

    Accordingly, in order to solve the above-mentioned problem (0008), the present invention provides a papermaking process for making wastepaper pulp, wherein the wastepaper is cut into a plurality of rectangular shapes having an appropriate size in the vertical and horizontal dimensions, and used paper The purpose of this paper is to develop and provide a used paper cutting device and a used paper cutting method in a used paper recycling apparatus, which can be processed while keeping the fibers of the paper as long as possible.

    As a means to solve this problem, it has the capacity to load and hold multiple used papers at the same time, and when feeding used paper, the feeding side end can be raised and lowered by a predetermined angle according to the number of used paper set A used paper feeding container having a bottom plate provided at the bottom, a used paper feeding unit comprising a used paper pressurizing mechanism and a used paper feeding mechanism that pressurizes the used paper when the bottom plate is raised and simultaneously feeds it to the vertical cutting unit; A plurality of longitudinal cutting blades supported in parallel to the feed direction, a rotation shaft for supporting the longitudinal cutting blade, a longitudinal rotation driving means for rotationally driving the rotation shaft, and a longitudinal direction A pair of upper and lower used paper pressure mechanisms and used paper feeding mechanisms provided before and after the cutting blade to prevent the feeding of a plurality of used paper, and a longitudinal cutting waste paper roll provided above the longitudinal cutting blade A vertical cutting mechanism consisting of a prevention mechanism and a direction perpendicular to the used paper feed direction A transverse cutting blade pivotally supported by the shaft, rotational drive means for driving the transverse cutting blade, and the lateral cutting blade provided arbitrarily movable in a direction perpendicular to the waste paper feeding direction. It consists of a lateral direction cutting mechanism comprising a lateral direction moving means and a mechanism for preventing curling of waste cut paper provided before and after the lateral direction cutting blade.

    In the used paper feeding section, a part or the whole of the used paper input container bottom plate surface is made of a non-slip material such as a cork plate or a non-slip agent such as a resin.

    Further, in the longitudinal cutting mechanism, a part or all of the waste paper pressurizing mechanism / used paper feeding mechanism and the waste paper curling prevention mechanism for longitudinal cutting are composed of a single member.

    Further, in the longitudinal cutting mechanism, the plurality of used paper pressurizing mechanisms / used paper feeding mechanisms are composed of a single driving means.

    The pressure member of the used paper feeding unit and the longitudinal cutting mechanism is composed of an elastic body such as a spring, or pressing means such as an electric cylinder, an air cylinder, or an oil cylinder.

    Further, in the longitudinal direction cutting mechanism and the lateral direction cutting mechanism, means for preventing scattering of waste fiber derived from waste paper, which is generated at the time of cutting the waste paper, is provided above the longitudinal direction cutting blade and the lateral direction cutting blade.

    In addition, a longitudinal cutting blade, which is supported by a rotating shaft arranged at a suitable interval on a rotating shaft arranged in a direction perpendicular to the feeding direction of the used paper, which is set by folding in two and transported one by one, is provided. A plurality of sheets are provided, and the used paper cut while being cut in the vertical direction by these longitudinal cutting blades is cut at a suitable interval by cutting the used paper at a suitable interval by crossing the used paper. It is characterized by being cut into a rectangular shape having vertical and horizontal dimensions.

    Moreover, in the longitudinal cutting mechanism and the transverse cutting mechanism of the waste paper cutting device in the used paper recycling apparatus, the attachment angle of the longitudinal cutting blade of the longitudinal cutting mechanism and the transverse cutting blade of the transverse cutting mechanism can be arbitrarily set. It is provided so that adjustment can be changed, and it is provided so as to be cut with a predetermined inclination with respect to the longitudinal and lateral sides of the used paper.

    In addition, in the vertical cutting mechanism and the horizontal cutting mechanism of the used paper cutting device in the used paper recycling apparatus, the number of the vertical cutting blades of the vertical cutting mechanism and the horizontal cutting blades of the horizontal cutting mechanism is arbitrarily changed. By providing it as possible, the size and number of used paper cutting pieces can be arbitrarily adjusted.

    As an effect of the present invention, a plurality of vertical cutting blades, which are supported at appropriate intervals, are provided on a rotating shaft arranged in a direction orthogonal to the feeding direction of the used paper, and the vertical cutting blades are used to The used paper that is sent while being cut in the direction is cut with a horizontal cutting blade that crosses the used paper at an appropriate interval, and the used paper is cut into a rectangular shape with the appropriate vertical and horizontal dimensions. By making it possible, it is possible to process waste paper fibers as long as possible, to produce high-strength waste paper pulp, and to further prevent the entanglement mechanism at the lower part of the vertical and horizontal cutting parts By providing each of them, there are extremely beneficial effects such as smooth feeding of used paper.

1 is a front view of an entire used paper recycling apparatus according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, and is a partially enlarged detail view (a portion enlarged detail view of FIG. 1) of a used paper cutting device in a used paper recycling apparatus when viewed from the front. 1 is a right side view of an entire used paper recycling apparatus according to an embodiment of the present invention. FIG. 4 is a partially enlarged detail view (b portion enlarged detail view of FIG. 3) of the used paper cutting device in the used paper recycling apparatus as viewed from the right side, showing an embodiment of the present invention. 1 is a plan view sectional view of an entire used paper recycling apparatus according to an embodiment of the present invention. FIG. 4 is a right side cross-sectional view showing a waste paper feeding state according to an embodiment of the present invention. It is an example of use of this invention and is a waste paper cutting procedure diagram.

    As the best mode for carrying out the present invention, in a small waste paper recycling apparatus having a waste paper pulp manufacturing process and a paper making process for making waste paper pulp, it has a capacity capable of simultaneously charging and holding a plurality of waste papers (RP), and A used paper input container (1b) having a bottom plate (1a) provided at the bottom so that the feeding side end can be raised and lowered by a predetermined angle (α) in accordance with the number of used paper set when used paper is fed, and the bottom plate A used paper feeding unit (1) comprising a used paper pressurizing mechanism (1c) and a used paper feeding mechanism (1d) that pressurizes the used paper (RP) at the same time as it is fed to the longitudinal cutting unit and is parallel to the feeding direction. A plurality of longitudinal cutting blades (2b) pivotally supported on the shaft, a rotation shaft (2a) for pivotally supporting the longitudinal cutting blade, and a longitudinal rotation driving means (M1) for rotating the rotation shaft ) And before and after the longitudinal cutting blade (2b) A pair of upper and lower used paper pressure mechanisms (2c) and used paper feeding mechanism (2d) for preventing feeding, and a longitudinal cutting used paper curb prevention mechanism (2e) provided above the longitudinal cutting blade. A vertical cutting mechanism (2), a horizontal cutting blade (3a) pivotally supported in a direction perpendicular to the used paper feeding direction, and a rotation driving means (M2) for driving the horizontal cutting blade And a lateral movement means (3b) provided so that the lateral cutting blade can be arbitrarily moved in a direction perpendicular to the feeding direction of the used paper, and prevention of curling of the used waste paper provided before and after the lateral cutting blade The used paper cutting device is characterized by comprising a lateral cutting mechanism (3) comprising a mechanism (3c).

    Therefore, one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5. First, as shown in FIGS. 1 and 3, the used paper cutting device (S) has a leg ring (CA) on the bottom square. And a stopper (ST) for preventing slipping, provided at a slightly upper position of the used paper recycling apparatus main body, mainly used paper feeding section (1) for feeding used paper, and the used paper in the vertical direction A vertical direction cutting mechanism (2) that cuts a plurality of points in the horizontal direction and a horizontal direction cutting mechanism (3) that further cuts the used paper in a horizontal direction.

    As shown in FIGS. 2 and 4, the used paper feeding section (1) is provided with a box-shaped (drawer type) used paper input container (1b) suitable for the size of used paper (newspaper folded). In addition, the used paper input container is pivotally supported by a lower L-shaped lifting member (1e) provided in the lower part on the back side of the container, and the back side of the bottom plate (1a) is rotated up and down. One end is raised and lowered to incline, and at the center of the feeding portion, the waste paper (RP) is pressurized when the bottom plate (1a) is raised, and simultaneously fed in the direction of the longitudinal cutting mechanism (2). The used paper pressurizing mechanism (1c) and the used paper feeding mechanism (1d) are respectively provided so as to reliably feed the used paper part by part. The L-shaped rotary lifting member (1e) is provided so that the predetermined lifting angle (α) is appropriately adjusted according to the remaining number of used paper in the used paper input container. . The used paper input container (1b) has a capacity capable of simultaneously storing and holding a plurality of used paper, and a side wall guide is provided on the side wall of the used paper input container so as to be adjustable in accordance with the width of the used paper. In order to prevent the waste paper from being fed unevenly, the bottom plate surface has a non-slip material such as a cork plate or a non-slip material such as a resin in order to keep the friction with the waste paper properly. It is also possible to apply and apply the agent. The used paper pressurizing mechanism / used paper feeding mechanism is made up of pressurizing members such as paper feed rollers, paper feed roller shafts, drive transmission shafts, guide members, and springs. Is transmitted to the drive transmission shaft by a drive transmission means such as Further, the power is transmitted to the paper feed roller by a drive transmission means such as a drive transmission shaft and a gear fixed to the paper feed roller shaft, and the paper feed roller is rotationally driven. A pressure member such as a spring is provided on the guide member. When the bottom plate (1a) rises by a predetermined angle, the end of the used paper loaded on the bottom plate comes into contact with the paper feed roller, and a predetermined pressure is applied. Thereafter, when the rotation driving means such as a motor is driven, the used paper is fed to the longitudinal cutting mechanism. Further, the used paper pressing mechanism / used paper feeding mechanism is composed of a pressure member such as a roller and a spring, and a guide member, and is provided in the vicinity of the input side end of the lower part of the crusher bottom plate. The used paper holding force generated by lowering the driving means such as a motor and applying an appropriate pressure, and the used paper pressurizing mechanism / used paper feeding mechanism are balanced with the used paper feeding force applied to the used paper, It has a mechanism to prevent paper feeding.

    Further, as shown in FIG. 5, the longitudinal cutting mechanism (2) includes a rotary shaft (2a) for supporting the vertical cutting blade and an electric motor for rotationally driving the rotary shaft. A pair of upper and lower used paper pressure mechanisms (2c) provided in front of and behind the longitudinal rotation drive means (M1) and the longitudinal cutting blade (2b) to prevent feeding of a plurality of used paper It comprises a waste paper feeding mechanism (2d) and a waste paper curbing prevention mechanism (2e) for cutting in the vertical direction provided above the vertical cutting blade. The longitudinal cutting blade (2b) is pivotally supported and fixed to the rotation shaft (2a) at an appropriate interval, and is rotated by a longitudinal rotation drive means (M) such as a motor and a drive transmission means such as a belt. It is provided as follows. And the mechanism (2e) for preventing entrainment of cut waste paper is composed of a plate member, a pressure member such as a pair of left and right springs, and a jumping adjustment member, and the plate member is provided at an appropriate interval from the upper part of the crusher bottom plate, and The used paper is appropriately pressed at the time of cutting, and at the same time, the used paper is prevented from being caught in the rotation direction of the cutting blade. In addition, a pair of upper and lower used paper pressure mechanisms and used paper feeding mechanisms provided before and after the cutting blade includes a roller supported by a rotating shaft at the bottom of the crusher bottom plate, a driving means such as a motor for driving the roller, and a belt Drive transmission means such as a roller, a roller provided at the top of the crusher bottom plate, a pressure member such as a spring, a guide member, and a drive means such as a motor that moves up and down a pressing portion constituted by these within a predetermined range Has been. Then, the used paper fed from the feeding unit is sensed by a sensor at a predetermined position, and the pre-cutting pressing unit descends and is cut while being pressed at a predetermined pressure. The cut waste paper is further fed, and is detected by a sensor at a predetermined position. After cutting, the pressing unit descends and feeds the lateral paper cutting mechanism (3) while pressing the waste paper at a predetermined pressure. Is done.

    Further, as shown in FIG. 5, the horizontal cutting mechanism (3) includes a horizontal cutting blade (3a) pivotally supported in a direction perpendicular to the used paper feeding direction, and the horizontal cutting blade. Rotation drive means (M2) for driving, transverse movement means (3b) provided so that the transverse cutting blade can be arbitrarily moved in a direction perpendicular to the waste paper feeding direction, and the transverse cutting blade And a mechanism (3c) for preventing curling of the cut waste paper provided before and after the paper. The horizontal cutting blade is supported and fixed to driving means such as a motor, and rotates in conjunction with the driving of the driving means. The driving means is fixed by a fixing portion. Furthermore, the left-right moving mechanism is configured by a driving unit such as an actuator that moves in a direction perpendicular to the feeding direction, a fixed member, and a fixed actuator operating unit. In addition, the entrainment prevention mechanism is configured by a boat-shaped member whose central portion is a gap, the cutting blade is disposed in the gap portion, and the upper surface of the crusher bottom plate and the boat-shaped member are disposed at a predetermined interval. It is fixed by a fixing member. The boat-shaped member is driven in conjunction with a driving means such as an actuator. The used paper fed from the longitudinal cutting mechanism is detected by a sensor at a predetermined position, and the feeding is stopped. Thereafter, the driving unit of the horizontal cutting mechanism is driven to rotate the horizontal cutting blade, and the horizontal moving unit is driven to cut the used paper in a direction perpendicular to the feeding direction. And at the time of a cutting | disconnection, waste paper is cut | disconnected by fixed magnitude | size, without being caught in a cutting blade by being pinched | interposed moderately by the crusher bottom board upper surface edge part and a ship-shaped member.

    Next, a method of cutting used paper cut by the used paper cutting device will be described. The used paper (RP), which is used to fold and set used paper such as newspaper, is orthogonal to the feed direction of the used paper. A plurality of longitudinal cutting blades (2b), which are pivotally supported at appropriate intervals, are provided on the rotating shaft (2a) arranged in the direction, and are cut in the longitudinal direction by these longitudinal cutting blades (2b). The used paper (RP) sent while being cut is cut with a transverse cutting blade (3a) across the used paper at an appropriate interval, whereby the used paper is made into a suitable size of vertical (Y) / horizontal ( X) Cut into a rectangular shape having dimensions, and above the vertical cutting blade (2b) of the vertical cutting mechanism (2) and the horizontal cutting blade (3a) of the horizontal cutting mechanism (3) , Prevention and entrainment of waste fibers derived from waste paper that occur when cutting waste paper Is characterized in that the provided locking mechanism (2e) (3c), respectively. Therefore, the above-mentioned rectangular waste paper cutting piece can be arbitrarily changed according to the situation and application each time.

    Next, the operation and operation procedure of this apparatus will be described. First, a plurality of sheets of paper that are first drawn out from the input port and stacked in a folded state are drawn out from the used paper container (1b), which is provided by being inserted almost at the center front of the apparatus main body. Set old paper such as newspapers in the container and insert it into the original slot. Then, the limit switch for newspaper detection is activated, and if it is normal, the operation start lamp is turned on. Then, when the operation button is pressed, the limit switch confirms whether the used paper is set at a fixed position, and the power of the bottom plate raising drive means for turning the L-shaped rotary lifting member is input (ON), The inner end of the bottom plate (1a) is lifted upward, and the power of the rotation driving means of the used paper pressurizing mechanism (1c) / used paper feeding mechanism (1d) provided at the upper part of the used paper feeding unit is input (ON). , Set to the feeding state. Further, after a few seconds, at a predetermined interval, the driving means of the used paper pressurizing mechanism (2c) / used paper feeding mechanism (2d) of the longitudinal cutting mechanism is lowered and rotated, and after a few seconds, the used paper is cut into the horizontal cutting mechanism ( 3) Feed to the department. When the paper is normally fed, the newspaper detection sensor is actuated, the horizontal rotation driving means (M2) such as an electric motor of the horizontal cutting mechanism rotates, and the horizontal cutting blade (3a) rotates. In addition, the horizontal movement means (3b) of the horizontal cutting mechanism moves in the left-right direction by a predetermined dimension set in advance, and the used paper (RP) becomes vertical (Y) / horizontal (X) as shown in FIG. ) Each is cut into a rectangular shape having a predetermined dimension. And if it moves to a predetermined position by a horizontal direction movement means (3b), a limit switch will act | operate and the rotation direction of a horizontal direction movement means (3b) and the drive direction of a horizontal direction cutting blade (3a) will switch, and a horizontal direction The cutting blade (3a) moves to the base fixed position (origin) while reversing. Further, the operation of the lateral cutting mechanism (3) can be cut into a plurality of rectangular shapes by repeating the same operation a plurality of times by a preset interval and the number of times of cutting.

    In the first embodiment, the cutting direction of the used paper is provided so that it can be cut into a rectangular shape parallel to the vertical and horizontal sides of the used paper. Accordingly, the paper is provided so as to be cut at a predetermined angle with respect to the vertical and horizontal sides of the used paper.

    Further, in Example 1, the number of used paper cut pieces is limited, but this is also provided so that the number of used paper cut pieces can be arbitrarily changed according to the application and situation.

    The used paper cutting device and the used paper cutting method of the present invention are provided with a plurality of longitudinal cutting blades supported at appropriate intervals on a rotating shaft arranged in a direction orthogonal to the direction of waste paper feeding. The used paper that is sent while being cut in the vertical direction by the direction cutting blade is cut with a horizontal cutting blade that crosses the used paper at an appropriate interval. In order to make it possible to process waste paper as long as possible, and to produce high-strength waste paper pulp, by manufacturing and selling this device, It has industrial applicability in terms of contributing to the relevant markets including paper manufacturers.

DESCRIPTION OF SYMBOLS 1 Used paper feeding part 1a Bottom plate 1b Used paper input container 1c Used paper pressurizing mechanism 1d Used paper feeding mechanism 1e L-shaped rotary lifting member 2 Longitudinal cutting mechanism 2a Rotating shaft 2b Longitudinal cutting blade 2c Used paper pressing mechanism 2d Used paper Feeding mechanism 2e Scattering prevention and entrainment prevention mechanism (vertical direction side)
DESCRIPTION OF SYMBOLS 3 Lateral cutting mechanism 3a Lateral cutting blade 3b Lateral moving means 3c Scatter prevention and entrainment prevention mechanism (lateral direction side)
CA leg ring M1 Vertical rotation drive means M2 Horizontal rotation drive means O Fall hole RP Waste paper S Waste paper cutting device ST Stopper X Horizontal Y Vertical α Predetermined angle

However, it is necessary to install a device that crushes and beats waste paper in the waste paper pulp manufacturing process using this waste paper as a raw material, and this device also needs to be miniaturized and used. It is desirable to process the waste paper fibers while keeping them as long as possible.

Claims (9)

    In a small waste paper recycling device that has a waste paper pulp manufacturing process and a paper making process for making waste paper pulp, it has a capacity capable of simultaneously loading and holding a plurality of waste papers (RP), and the end of the feeding side is used when feeding waste paper. The used paper input container (1b) having a bottom plate (1a) that can be raised and lowered by a predetermined angle (α) in accordance with the set number of sheets, and pressurizing the used paper (RP) at the same time as the used waste paper (RP) is pressurized. A used paper feeding unit (1) comprising a used paper pressurizing mechanism (1c) and a used paper feeding mechanism (1d) to be fed to the cutting unit, and a plurality of longitudinal cutting blades supported in parallel with the feeding direction ( 2b), a rotation shaft (2a) for supporting the longitudinal cutting blade, longitudinal rotation driving means (M1) for rotationally driving the rotation shaft, and front and rear of the longitudinal cutting blade (2b) A pair of upper and lower used paper to prevent feeding multiple used paper A longitudinal cutting mechanism (2) comprising a pressure mechanism (2c), a waste paper feeding mechanism (2d), and a longitudinal cutting waste paper curling prevention mechanism (2e) provided above the longitudinal cutting blade; A transverse cutting blade (3a) pivotally supported in a direction perpendicular to the feeding direction, a rotation drive means (M2) for driving the transverse cutting blade, and the transverse cutting blade as a used paper feed direction A lateral cutting mechanism (3) comprising a lateral movement means (3b) provided so as to be arbitrarily movable in the vertical direction, and a curling prevention mechanism (3c) for waste cut paper provided before and after the lateral cutting blade. Waste paper cutting device characterized by comprising     2. The waste paper feeding section (1), wherein a part or all of the surface of the used paper input container bottom plate is made of a non-slip material such as a cork plate or a non-slip agent such as a resin. Used paper cutting equipment.     In the longitudinal cutting mechanism (2), a part or all of the waste paper pressurizing mechanism (2c), the waste paper feeding mechanism (2d), and the waste paper curling prevention mechanism (2e) for longitudinal cutting is a single member. The used paper cutting device according to claim 1, comprising:     2. The used paper cutting apparatus according to claim 1, wherein in the longitudinal cutting mechanism (2), the plurality of used paper pressurizing mechanisms (2c) and the used paper feeding mechanism (2d) comprise a single drive means. .     The pressure member of the used paper feeding unit (1) and the longitudinal cutting mechanism (2) is composed of an elastic body such as a spring or pressing means such as an electric cylinder, an air cylinder, an oil cylinder, or the like. The used paper cutting device according to claim 1.     In the longitudinal cutting mechanism (2) and the transverse cutting mechanism (3), the waste paper-derived fiber waste generated during the cutting of the waste paper is formed on the top of the longitudinal cutting blade (2b) and the transverse cutting blade (3a). 2. The used paper cutting device according to claim 1, further comprising a scattering prevention means.     A used paper cutting device (S) in a used paper recycling apparatus, which is a rotary shaft in which used paper (RP) set in a folded state and fed one by one is arranged in a direction perpendicular to the used paper feed direction. (2a) A plurality of longitudinal cutting blades (2b) pivotally supported at appropriate intervals are provided, and used paper (2b) is sent while being cut in the longitudinal direction by these longitudinal cutting blades (2b). RP) is cut with a transverse cutting blade (3a) across the used paper at an appropriate interval, whereby the used paper is rectangular having an appropriate size of vertical (Y) and horizontal (X) dimensions. It is cut into a shape, and occurs at the time of cutting used paper at the upper part of the vertical cutting blade (2b) of the vertical cutting mechanism (2) and the horizontal cutting blade (3a) of the horizontal cutting mechanism (3). Disposal prevention and entanglement prevention means (2e) and (3c) for fiber waste derived from waste paper Cutting method of the used paper in the used paper recycling apparatus characterized by comprising.     The longitudinal cutting mechanism (2) of the longitudinal cutting mechanism (2) and the lateral cutting of the lateral cutting mechanism (3) in the longitudinal cutting mechanism and the transverse cutting mechanism of the used paper cutting device in the used paper recycling apparatus. 8. An attachment angle of the blade (3a) is provided so that it can be arbitrarily adjusted, and is provided so as to be capable of being cut with a predetermined inclination with respect to the longitudinal and lateral sides of the waste paper. Cutting method of used paper. The longitudinal cutting mechanism (2) of the longitudinal cutting mechanism (2) and the lateral cutting of the lateral cutting mechanism (3) in the longitudinal cutting mechanism and the transverse cutting mechanism of the used paper cutting device in the used paper recycling apparatus. The used paper cutting method according to claim 7, wherein the size and number of used paper cutting pieces can be arbitrarily adjusted by providing the number of blades (3a) to be arbitrarily changeable.

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