JP2003001131A - Device for treatment of wastepaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved method for treating wastepaper avoiding troubles occurred so far such as plugging of paper around rotating blades to feeding of too much wastepaper from the inlet when wastepaper is transported by the tips of the rotating blades and torn off at the biting part, and also a long time required for disintegrating of wastepaper. SOLUTION: On the rotating shaft 15 on the side where wastepaper is pulled-in, there is equipped with a plurality of rotating blades 8b, tips 17 of which are inclined toward the direction of rotation, and other blades 8b, tips of which are inclined toward the non-rotating direction, in a manner that they exits in combination with a certain internal, thereby quantity of wastepaper pulled-in is controlled. On the hand, the quickly rotating shaft 16, which tear off wastepaper, is equipped with rotating blades a inclined toward the direction of rotation, and thus the tips of the rotating blades are so arranged to tear off wastepaper easily at the biting part 11.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste paper processing apparatus in which a used waste paper is bitten by a pair of rotary blades having different rotation speeds. The present invention relates to a configuration of a rotary blade for performing good conveyance and crushing. 2. Description of the Related Art In recent years, as computerization has progressed, information recording media have rapidly shifted from paper to electronic, and recording paper and the like that have become unnecessary for this purpose are treated as "used paper". Used paper includes copy paper by a copier, thermal paper, pressure-sensitive paper, continuous computer paper, and the like, which are discarded or reused as resources. In order to discard or reuse waste paper, it is necessary to perform specific processing while keeping the contents confidential. For example, there are a case where a paper of about A4 size and a B5 size is directly processed by a used paper collection company, and a case where the paper itself is crushed into small pieces of paper and then processed by a used paper company. In the latter case, the processing can be performed inside the company, etc.
It is also used effectively as a security leak countermeasure. As a conventional processing apparatus for crushing used paper, for example, there is an apparatus whose main part is shown in FIG. A pair of rotating shafts 115 and 116 extending in the horizontal direction are accommodated in the frame 101 in a state of being arranged substantially in parallel, and are set to have different rotation speeds by rotating gears (not shown). A plurality of rotary blades 108, 109 are fitted and fixed to the rotary shafts 115, 116 at equal intervals. The direction of the blade edge of the rotary blade 108 used here is inclined in the rotation direction. The rotation speed of one rotation shaft 116 is set higher than that of the rotation shaft 115, and the rotation blade 109 is fitted and fixed. The cutting edges of the rotary blade 109 are all inclined in the rotation direction. As shown in FIG. 4, the rotary blades 108 and 109 are arranged while the blade edges are linearly arranged in the axial direction.
9 are arranged at regular intervals so as to alternately enter the gaps. However, in such a conventional waste paper processing apparatus, the edges of the rotary blades are all inclined in the same direction, and a rotary blade having a relatively deep bottom is used. While a large amount of used paper can be drawn into the apparatus, a large amount of used paper rushes into an adjusting unit that adjusts the amount of used paper, and the conveyance is stopped there, causing a paper jam. As a countermeasure for this, a rotary blade with a non-rotating direction of the blade edge or a rotary blade with a shallower blade bottom was used, but when using a rotary blade with all the blade edges tilted in the non-rotating direction, When a rotating blade having a shallow blade bottom is used, the conveying ability of the used paper is weak, and the crushing force of the used paper is small. [0005] Further, in the conventional crushing process of waste paper using a rotary blade in which all the blade edges of the rotary blade are inclined in the rotation direction, a relatively long crushing process time is required. This is because when the waste paper wrapped around the rotating shaft with a slower rotating speed is torn off by a rotating blade with a higher rotating speed, the inclined angle of the blade edge of the rotating blade provided on the rotating shaft with a lower rotating speed makes the recycled paper in the biting part at the center. The inclined angle of the blade of the rotating blade with a high rotating speed is inclined in the direction in which the rotating blade with a high rotating speed is inclined, and the inclined angle of the blade with the rotating angle of the rotating blade even when trying to tear off the waste paper on the rotating blade with a low rotating speed at the biting portion. When the rotation speed is matched, the used paper is simply pulled out from the cutting edge, so that the crushing is not sufficiently performed and the crushing process of the used paper is repeated for a relatively long time. [0006] The present invention has been made based on such a point, and it is an object of the present invention to provide an apparatus for improving the ability to transport and crush paper. [0007] In order to achieve the above object, the present invention provides a used paper processing apparatus provided with a plurality of rotary blades on a pair of rotary shafts, respectively. The rotating speed of the rotating blade is configured to be different from the other, and the rotating portion having the slow rotating speed and the rotating blade having the fast rotating speed are formed in the engaging portion formed by the rotating blade and the rotating blade having the slow rotating speed. In a waste paper processing apparatus in which waste paper is bitten, a blade of a rotating blade having a low rotation speed is provided to be inclined in a rotating direction, and an adjacent rotating blade is inclined in a non-rotating direction and is fixed on the same axis. The used paper processing apparatus is characterized in that a plurality of sheets are arranged at intervals of, while the blades of the rotating blades provided on the rotating blade having a high rotation speed are inclined in the rotating direction. In the conventional construction, the cutting edge of the rotary blade is inclined in the rotating direction and a plurality of sheets are arranged at a constant interval in the axial direction so that the used paper is strongly bitten. Since a plurality of rotating blades with cutting edges inclined in the direction and a plurality of rotating blades with cutting edges inclined in the non-rotating direction are arranged at regular intervals on a rotating shaft with a slow rotating speed, the cutting edge of Since the number is smaller in the axial direction than in the prior art, the number of cutting edges piercing the used paper is reduced, and the cutting force of the used paper exerted by the cutting edges inclined in the rotation direction is reduced. As a result, a large amount of used paper can be bitten at once as in the related art, and the paper can be stably conveyed without delay. A rotating blade having a low rotating speed is provided with both a cutting edge inclined in the rotating direction and a cutting edge inclined in the non-rotating direction. Because the cutting edge of the rotary blade provided on the rotating shaft with a higher rotating speed at the biting portion is used to peel off the waste paper clinging to the blade that is tilted in the non-rotating direction provided on the rotating shaft with a lower rotating speed. In this way, the paper works so that the paper can be crushed aggressively. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the drawings. In this embodiment, since a part of the conventional waste paper processing apparatus is improved, the same parts as those in the related art are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described. FIG. 1 shows a configuration of a used paper processing apparatus according to the present invention.
Shown in Above the frame 1, the lid of the frame 1 and the waste paper 3
There is an upper cover 2 for mounting the camera. At a substantially central portion of the upper cover 2, an input port 4 for guiding the used paper 3 to the inside is provided. A guide 5 for guiding the used paper 3 to the crushing section is provided at a lower portion of the inlet 4.
And the tip of the guide 5 is a rotary blade 8 for conveying used paper.
a, 8b. A pair of rotating shafts 15 and 16 are provided below the guide 5, and the rotating shafts 15 and 16 are rotatably supported by the frame 1 via gears and bearings (not shown). The rotation shafts 15 and 16 are rotatably mounted so that rotation from a motor (not shown) can be rotated at different rotation speeds through gears having different gear ratios. The rotating shaft 15 is provided with a rotating blade 8a having a cutting edge inclined in the non-rotating direction and a rotating blade 8b having a cutting edge inclined in the rotating direction at a predetermined interval. Rotary axis 1
Keys (not shown) are provided on the rotary blades 5 and 16, and the rotary blades 8a and 8
b and 9 are fitted and fixed. Above the rotary blades 8a and 8b provided on the rotary shaft 15, a pressing member 10 for pressing used paper against the rotary blade is provided so as to be swingable, and the arm 2
The bolt is fixed to the frame 1 via the “0”. A plurality of the pressing members 10 are provided at regular intervals in the axial direction, and each is fixed to the frame 1. The arm 20 is provided with an adjusting unit 20a for adjusting the flow of the used paper. The rotary blade 16 is provided on the rotary shaft 16 and the blade edge is inclined in the rotation direction. A circumferential guide 12 for guiding the crushed waste paper is provided above the rotary blade 9. Below the pair of rotary blades, a plurality of bars constituting a filter 13 that allows only used paper of a predetermined size to pass are provided in parallel at a predetermined interval in the direction of the rotation axis. Next, the arrangement of the rotary blade will be described. FIG. 2 is a plan view relating to the direction of the blade edge of the rotary blade and the interval between the rotary blades in the used paper processing apparatus of the present invention. Here, in order to clarify the direction of the cutting edge of the rotary blade, the number of cutting edges is simplified to half. First, the rotary blade 8a is moved from the front end of the rotary shaft 15
Are arranged side by side. The blade edge of the rotary blade 8a is inclined in the non-rotational direction. A fitting member 14 is provided between the rotary blades. The fitting member 14 includes the rotary blades 8a, 8b, 9
While keeping the distance, the winding of the waste paper around the pair of rotating shafts is prevented, so that the cutting edge of the rotary blade easily contacts the waste paper. Next, the rotary blade 8b whose blade edge is inclined in the rotation direction is arranged. Thereafter, this arrangement is repeated to form the rotary blades 8a and 8b. In other words, the rotating blades 8a, 8a, 8b,
.. 8a, 8a, 8b,... One rotary shaft 16 is provided with a rotary blade 9, and the direction of the blade is inclined in the rotation direction. And these rotating shafts 15,
The blades of the rotary blades provided at 16 are shifted from each other so as not to be linearly aligned with the blades of the rotary blades arranged in the adjacent axial direction. Both ends of the rotating shafts 15 and 16 are fixed by collars and pins (not shown) to prevent the rotating blades from falling off. These rotary blades 8a, 8b, 9 are all composed of one type of rotary blade of the same shape. Next, the configuration of the rotary blade will be described. FIG. 5 is a plan view showing the structure of the rotary blade used in the present invention. The rotary blade has 20 blade edges 17 arranged in the circumferential direction, all of which have the same shape and the same function. The tip of the cutting edge 17 is sharpened by a polishing treatment, and is further subjected to a surface effect treatment so as to withstand long-term wear. The cutting edge 17 is inclined in one direction. This means that when a center line is drawn from the vertex of the cutting edge to the center of the circle, the angle 17a is smaller than the angle 17b across the center line. In this embodiment, the inclination is about 30 °. The shaft hole 6 is a hole for fitting to the rotating shafts 15 and 16 and is arranged at the center of the rotating blade. The shaft hole 6 is provided with two key grooves 18a and 18b along the circumference as predetermined. For example, when the vertical center line of the key groove 18a is 0 °, the center line of the key groove 18b is 171 °.
It is provided in the position of. In this case, assuming that the angle between adjacent cutting edges is θ1, θ2 is half the angle of θ1. In the present invention, the keyway 1 is located at a position which is an odd integer multiple of 19, that is, 19 times.
8b are arranged. Next, a method for assembling a rotary blade according to the present invention will be described. By providing the key grooves 18a and 18b and using the front and back surfaces of the rotary blade, the rotary blade constitutes a total of four rotary blade angles and arrangements. Figure 6 shows other patterns.
These are shown in FIGS. The plan view of the rotary blade shown in FIG. 6 is obtained by rotating the keyway 18b shown in FIG. 5 to a position of 0 °. In this way, the blade can be fitted to the rotary shaft in a state where the tilt angle of the blade is in the same direction but shifted by a half pitch of the blade of the rotary blade from the position of the blade 17 shown in FIG. The rotary blade shown in FIGS. 5 and 6 corresponds to a state in which the blade edge in the present invention is inclined in the rotation direction. FIG. 7 is a plan view showing the back surface of the rotary blade shown in FIG. The key groove 18c corresponds to the key groove 18a in FIG. The blade tip 17d in this state is inclined in one direction,
Here, the inclination direction is opposite to the inclination direction in FIGS. This corresponds to the state of the rotary blade inclined in the non-rotational direction in the present invention. FIG. 8 is a plan view of the rotary blade obtained by rotating the keyway 18d shown in FIG. 7 to a position of 0 °. As described above, the blade edge in FIGS. 7 and 8 can be arranged so as to be shifted by a half pitch from the blade edge of the adjacent rotary blade while being inclined in the non-rotational direction. That is, by providing the four types of rotary blades on the rotary shafts 15 and 16, the rotary blade of the present invention whose rotary edge is tilted in the rotational direction and the rotary blade whose rotary edge is tilted in the non-rotation direction are adjacent rotary blades. And can be easily configured in the axial direction. In the used paper processing apparatus having the above structure, the used paper 3 placed on the upper cover 2 above the frame 1 is supplied to the input port 4.
More into the processing unit. Then, the used paper 3 is bent by the guide 5 toward the rotary blade on the rotary shaft 15 side. At this time, since the rotation of the rotary shaft 15 is rotating clockwise as indicated by the white arrow, the waste paper 3 enters between the swingable pressing member 10 and the rotary blades 8a and 8b, and the cutting edge 17 of the rotary blade 8b.
And start conveyance. Here, while there are two rotary blades 8a that are inclined in the non-rotational direction, the blade 8b that is inclined in the rotational direction is mixed at one ratio and the fitting member 14 is coaxially mounted on the same shaft. Since the cutting edge 8b is inclined in the rotational direction, the cutting edge 8b does not bite the used paper at once as in the related art, so that the used paper can be stably conveyed. The waste paper 3 wound around the rotary blades 8a and 8b in this way enters the biting portion 11 created by the other rotary blade 9 soon. At this time, the rotation speed of the rotation shaft 16 is set to rotate at a speed higher than that of the rotation shaft 15 in a counterclockwise direction as indicated by a white arrow. Here, the speed ratio of the rotating shafts 15 and 16 is set to approximately 0.6 to 1.0. The used paper 3 that has entered the biting portion 11 is pierced by the blades of the rotary blade 9 and the rotary blades 8a and 8b. The used paper 3 pierced with the edge of the rotary blade is
When the rotary blades 9 having a high rotation speed rotate, they are likely to be peeled off from a state in which the rotary blades 8a and 8b are entangled. Since the cutting edge of the rotary blade 8b is inclined in the non-rotational direction, the biting portion 11 functions to hold the used paper 3 so as not to be peeled off. However, the used paper 3 cannot keep its shape, and the rotation speed is reduced. Torn by the fast rotating blade 9. Eventually, the used paper 3 completes the initial crushing and winds around the rotary blade 9 while forming an irregular shaped paper piece. Rotary axis 1
The used paper 3 wound around the rotary blade 9 on the 6 side is transported by the transport guide 12 without being scattered. Although the waste paper 3 thus crushed is in a state where the crushing of the first stage has been completed, since it is still a relatively large piece of paper, the waste paper 3 moves without passing through the filter 13 and reenters the biting portion 11 to be crushed. When a small piece of paper of about 10 mm is repeatedly formed, the used paper 3 passes through the filter 13 and falls to the lower part, and the crushing is completed. The rotary blades 8a and 8b of the present invention are arranged in the axial direction so that the used paper having the size of the JIS standard A-row 4 or B-row 5 that is widely used in Japan can be smoothly transported. ing. This is because the blade tip 17 of the rotary blade 8b is in the input port 4
This is because the interval at which two or more points are always pierced from the waste paper 3 entering from above. Of course, the rotating blade 8b starts to transport even one sheet, but the friction coefficient of the used paper is small and it is slippery. For example, when a photo or a business card is started to be conveyed at one point of the blade of the rotating blade 8b, the used paper is bent right or left. In this state, the waste paper enters the biting portion 11 and the succeeding waste paper may be piled up, so that smooth conveyance and crushing may not be performed. In the present invention, stable conveyance and crushing are realized by always engaging two or more cutting edges. In the present invention, the number of blades of the rotary blade is set to 20, but the number of blades can be increased or decreased to adjust the size of the paper piece to be crushed for the first time. As shown in FIG. 2, the rotary blade 8a inclined in the non-rotating direction is 2 in the non-rotating direction, and the rotary blade 8b inclined in the rotating direction is 1 in the rotating shaft 15 as shown in FIG. When multiple blades of adjacent rotary blades are arranged at regular intervals while being shifted by half a pitch, the blade edges of the rotary blades are arranged in a straight line in the axial direction and all are not inclined in the rotational direction as in the past. The force of biting the used paper 3 is reduced, and the case where the used paper 3 is sent to the adjustment unit 20a at once and the rotation of the rotating shaft is stopped does not occur. In the biting portion 11, the rotary blade 8 inclined in the non-rotational direction is used.
Since a is provided on the rotating shaft 15 having a low rotating speed, the rotating blades 9 provided on the rotating shaft 16 having a fast rotating speed rotate when the used paper 3 wound around the rotating blade on the rotating shaft 15 side is peeled off. The blade 8a plays a role to strongly hold the waste paper 3, and at that time, the waste paper 3 can be largely broken. In the configuration of the rotary blade according to the present invention, the arrangement of the rotary blades can be rearranged according to the friction coefficient, paper quality, type and size of the waste paper handled by the customer, so that the optimal crushing conditions suitable for the material to be crushed are determined. Can produce. In the present invention, the ratio of the rotating blade having the inclined blade in the rotating direction used for the rotating blade having a low rotating speed to the rotating blade having the inclined blade in the non-rotating direction is 1: 2. Depending on the thing 1:
A more efficient crushing is possible by rearranging as in 3 or 1: 4. In the present invention, the cutting edge of the rotary blade provided on the rotating shaft having a high rotation speed is inclined in the rotation direction to increase the tearing force of the waste paper, but the waste paper is appropriately arranged by the rotation blade inclined in the non-rotation direction. You can also adjust the tearing ability. In addition, since the arrangement of the rotary blades on both rotary shafts can be changed according to the wear amount of the blade edge of the rotary blade, stable crushing can be performed using the rotary blades for a long period of time. In addition, since there is only one type of rotating blade to handle, the transport and management methods can be unified, and since the number of parts is one, it can be used for a long time without increasing the number of special work steps and replacement tools. Become. FIG. 9 shows the state of waste paper that has been crushed by manual low-speed rotation with the configuration of the rotary blade according to the present invention. The part that looks white is the waste paper, and the part that looks black is the broken part. Among these, the broken portion that appears to be broken relatively large is the portion of the biting portion 11 that has been greatly broken because the rotary blade 8a has retained the used paper. In the present invention, the cutting edges of the adjacent rotary blades are arranged shifted by half a pitch, so that the direction in which the used paper is cut and spread is connected to the hole opened by the cutting edge, thereby creating a state in which the used paper is easily crushed. I have. On the other hand, FIG. 10 is an actual view in which waste paper is crushed by manual low-speed rotation with a configuration of a conventional rotary blade. Since the edges of the rotary blades 108 are all inclined in the rotation direction, the waste paper 103 is easily pulled out by the rotary blade 109 at the biting portion 111, so that the damage of the waste paper is reduced and the fracture surface is reduced. Understand. As is clear from the above description, according to the used paper processing apparatus of the present invention, the inclination of the cutting edge of the rotary blade for conveying the used paper is mixed in the rotation direction and the non-rotation direction. Therefore, the waste paper can be crushed extremely smoothly without a large amount of waste paper being transported at one time. Furthermore, since the blade of the rotary blade having a high rotation speed is configured to be inclined in the rotation direction, the tearing force of the used paper at the biting portion is increased, and the crushing ability of the used paper is increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing an embodiment of a used paper processing apparatus according to the present invention. FIG. 2 is a plan view showing an embodiment of a configuration of a rotary blade of the used paper processing apparatus according to the present invention. FIG. 3 is a longitudinal sectional view showing a conventional waste paper processing apparatus. FIG. 4 is a plan view showing a configuration of a rotary blade in a conventional used paper processing apparatus. FIG. 5 is a plan view showing one embodiment of the structure of the rotary blade according to the present invention. FIG. 6 is a plan view in which the key groove 18b of the rotary blade of FIG. 5 is arranged at a position of 0 °. FIG. 7 is a plan view showing a state where the rotary blade of FIG. 5 is turned upside down. 8 is a plan view in which the key groove 18d of the rotary blade of FIG. 7 is arranged at a position of 0 °. FIG. 9 is a photograph showing a state in which waste paper is crushed at a low speed by the configuration of the rotary blade according to the present invention. FIG. 10 is a photograph of a state in which waste paper is rotated at a low speed and crushed by a configuration of a rotary blade in a conventional waste paper processing apparatus. [Description of References] 6, 19 ... Holes 8a, 8b, 9 ... Rotary blade 11 ... Biting portion 15, 16 ... Rotary shaft 17 ... Blade edges 18a, 18b, 18c, 18d ... Keyway

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Toshiaki Tsuboi             2-1-1-16 Chuo, Ebina-shi, Kanagawa Wealth             Xerox Engineering Co., Ltd. (72) Inventor Masaru Sakuma             2-1-1-16 Chuo, Ebina-shi, Kanagawa Wealth             Xerox Engineering Co., Ltd. (72) Inventor Hiroyuki Seki             2-1-1-16 Chuo, Ebina-shi, Kanagawa Wealth             Xerox Engineering Co., Ltd. F term (reference) 4D065 CA12 CB02 CC01 CC08 DD09                       DD26 EB12

Claims (1)

Claims 1. A plurality of rotary blades are provided on a pair of rotary shafts, respectively, and a rotary blade on one rotary shaft side is configured to have a different rotation speed from the other, and the rotation speed is low. In a waste paper processing apparatus in which waste paper is bitten into the bite portion by a biting portion formed by a blade and the rotary blade having a high rotation speed and a rotary blade having a low rotation speed, the rotation having the low rotation speed is provided. While the blade edge of the blade is provided to be inclined in the rotation direction and the adjacent rotation blade is inclined in the non-rotation direction to arrange a plurality of blades at a constant interval on the same axis, the rotation provided to the rotation blade having the fast rotation speed is provided. A used paper processing apparatus characterized in that a blade edge of the blade is provided to be inclined in a rotation direction.