JP4855812B2 - Shredda - Google Patents
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- JP4855812B2 JP4855812B2 JP2006093856A JP2006093856A JP4855812B2 JP 4855812 B2 JP4855812 B2 JP 4855812B2 JP 2006093856 A JP2006093856 A JP 2006093856A JP 2006093856 A JP2006093856 A JP 2006093856A JP 4855812 B2 JP4855812 B2 JP 4855812B2
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Description
本発明は、例えば紙・書類等の紙葉状をした不用紙(以下、これを被細断物という)を細断処理するシュレッダに係り、特に、細断処理時に発生する音を抑制しうるようにしたシュレッダに関する。 The present invention relates to a shredder for shredding paper sheets such as paper and documents (hereinafter referred to as shredded material), and in particular, can suppress sound generated during shredding processing. It relates to the shredder.
従来のシュレッダには、互いに平行な1対の回転軸のそれぞれに、外周面に、複数の刃と切欠凹部とを回転方向に向かって交互に繰り返すように設けたほぼ円盤状の複数のカッタを、隣接する各刃を結ぶ線が、回転軸を中心とする螺旋を描くように、順次位相を少しずつずらせて取り付けることにより、紙を細断する際に、カッタの各刃が被細断物を順番に噛み込むようにし、もって、モータへの負荷を軽減しうるとともに、騒音の発生を抑制しうるようにしたものがある(例えば特許文献1参照)。
しかし、特許文献1に記載されているシュレッダにおいては、各カッタにおける刃の数が多く、しかも上記螺旋のねじれ角が大きいため、どうしても、複数のカッタの刃が同時に被細断物を噛み込むため、モータへの負荷の軽減効果、および騒音の抑制効果が十分とは言えない。
However, in the shredder described in
本発明は、上述のような従来の課題を解決するためになされたものであって、複数のカッタの刃が同時に被細断物を噛み込むのを防止することにより、モータへの負荷の軽減効果、および騒音の抑制効果を高めることができるようにしたシュレッダを提供することを目的としている。 The present invention has been made to solve the above-described conventional problems, and reduces the load on the motor by preventing the blades of a plurality of cutters from simultaneously biting the shredded object. An object of the present invention is to provide a shredder capable of enhancing the effect and the noise suppressing effect.
本発明によると、上記課題は、次のようにして解決される。
(1)1対の回転軸のそれぞれに、外周面に、複数の刃と切欠凹部とを、回転方向に向かって交互に繰り返すように設けたほぼ円盤状の複数のカッタを、相対回転不能として外嵌して列設し、前記1対の回転軸を、各列の隣接するカッタ間に他の列のカッタを、ピッチをずらせて、交互に入り込ませて互いに平行に配設し、両列の互いに隣接するカッタ同士が摺り合わされた状態で互いに逆方向に回転するようにしてなるシュレッダにおいて、各列のカッタを、互いに隣接するものの近接する刃先同士を順次結んだ線が、回転軸を中心とする螺旋を描くように整列させて回転軸に取り付けるとともに、前記両カッタ列により被細断物を細断しうる有効細断幅Wに対する前記螺旋のねじれ角θを、各カッタにおける刃の数をnとしたとき、ほぼ180°/nとする。
According to the present invention, the above problem is solved as follows.
(1) A plurality of substantially disk-shaped cutters provided on each outer peripheral surface of a pair of rotating shafts so as to alternately repeat a plurality of blades and notch recesses in the rotational direction are set to be relatively non-rotatable. The outer shafts are arranged in rows, and the pair of rotating shafts are arranged in parallel so that the cutters in the other rows are shifted in pitch between the adjacent cutters in each row so as to enter alternately. In the shredder that rotates in the opposite direction with the cutters adjacent to each other, the line that connects the cutters in each row sequentially with the adjacent blade tips adjacent to each other is the center of the rotation axis. The helix angle θ of the helix with respect to the effective shredding width W that can be shredded by the two cutter rows, and the number of blades in each cutter. Where n is approximately And 80 ° / n.
(2)上記(1)項において、各カッタの厚さをTとしたとき、各列の互いに隣接するカッタの位相差Δθを、ほぼ2θT/Wとする。 (2) In the above item (1), when the thickness of each cutter is T, the phase difference Δθ between adjacent cutters in each row is approximately 2θT / W.
(3)上記(1)または(2)項において、回転軸の外周面に、ねじれ角をθとしたキーまたはキー溝を設け、かつ同一形状とした各カッタの内面に、前記キーまたはキー溝に係合するキー溝またはキーを設け、それらを互いに係合させつつ、かつ間にスペーサを挟んで、各カッタを回転軸に外嵌する。 (3) In the above item (1) or (2), a key or key groove having a twist angle θ is provided on the outer peripheral surface of the rotating shaft, and the key or key groove is formed on the inner surface of each cutter having the same shape. A key groove or a key is provided to be engaged with each other, and the cutters are externally fitted to the rotary shaft while engaging them with each other and with a spacer interposed therebetween.
(4)上記(1)〜(3)項のいずれかにおいて、n≧7とする。 (4) In any of the above items (1) to (3), n ≧ 7.
請求項1記載の発明によると、各列のカッタを、互いに隣接するものの近接する刃先同士を順次結んだ線が、回転軸を中心とする螺旋を描くように整列させて回転軸に取り付けるとともに、両カッタ列により被細断物を細断しうる有効細断幅Wに対する螺旋のねじれ角θを、各カッタにおける刃の数をnとしたとき、ほぼ180°/nとしてあるので、複数のカッタの刃が同時に被細断物を噛み込むのを防止することができ、もってモータへの負荷の軽減効果、および騒音の抑制効果を高めることができる。 According to the first aspect of the invention, the cutters in each row are attached to the rotary shaft by aligning the cutter blades adjacent to each other in order so as to draw a spiral centering on the rotary shaft. Since the torsion angle θ of the spiral with respect to the effective shredding width W that can chop the object to be shredded by both cutter rows is approximately 180 ° / n, where n is the number of blades in each cutter, a plurality of cutters It is possible to prevent the blades from biting the shredded object at the same time, thereby enhancing the effect of reducing the load on the motor and the effect of suppressing noise.
請求項2記載の発明によると、各カッタの厚さをTとしたとき、各列の互いに隣接するカッタの位相差Δθを、ほぼ2θT/Wとしてあるので、各列の互いに隣接するカッタの位置関係を正確に定めて回転軸に取り付けることができる。 According to the second aspect of the present invention, when the thickness of each cutter is T, the phase difference Δθ between adjacent cutters in each row is approximately 2θT / W. The relationship can be accurately determined and attached to the rotating shaft.
請求項3記載の発明によると、回転軸の外周面に、ねじれ角をθとしたキーまたはキー溝を設け、かつ同一形状とした各カッタの内面に、前記キーまたはキー溝に係合するキー溝またはキーを設け、それらを互いに係合させつつ、かつ間にスペーサを挟んで、各カッタを回転軸に外嵌してあるので、各カッタの回転軸への取り付けおよび取外しを簡単に行うことができ、組み付け作業性がよい。 According to a third aspect of the present invention, a key or key groove having a twist angle of θ is provided on the outer peripheral surface of the rotary shaft, and the key or key groove engaged with the key or key groove is formed on the inner surface of each cutter having the same shape. Each cutter is externally fitted to the rotary shaft with grooves or keys engaged with each other and with a spacer in between, so that each cutter can be easily attached to and removed from the rotary shaft. The assembly workability is good.
請求項4記載の発明によると、n≧7としてあるので、被細断物を細かく切断することができ、機密防衛機能を高めることができる。 According to the fourth aspect of the present invention, since n ≧ 7, the object to be cut can be cut finely, and the security function can be enhanced.
以下、本発明を図面に基づいて説明する。図1は、本発明の一実施形態の斜視図、図2は、同じく、縦断側面図、図3は、同じく、要部の拡大縦断側面図である。 The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a vertical side view, and FIG. 3 is an enlarged vertical side view of the main part.
このシュレッダ(1)は、図1及び図2に示すように、前後寸法が短く、左右寸法が長い縦長の有底箱状体からなるケース本体(2)を備えている。このケース本体(2)は、上面と前面とが開放し、内部は、上下に収容空間(2a)(2b)が区画形成されている。 As shown in FIGS. 1 and 2, the shredder (1) includes a case body (2) made of a vertically long bottomed box-like body having a short front-rear dimension and a long left-right dimension. The case main body (2) has an upper surface and a front surface that are open, and the interior is partitioned into housing spaces (2a) and (2b).
ケース本体(2)内の上部収容空間(2a)には、細断ユニット(3)が取外し可能に組付けられている。細断ユニット(3)は、前部に操作パネル(4)を設けた上面カバー(5)を有し、この上面カバー(5)の上面ほぼ中央部には、紙・書類等の被細断物(A)が投入される投入口(6)が設けられている。この投入口(6)には、ケース本体(2)の後方に向けて所定の角度で下降傾斜する挿入通路(7)が続いている。 The shredding unit (3) is detachably assembled in the upper housing space (2a) in the case body (2). The shredding unit (3) has an upper surface cover (5) provided with an operation panel (4) at the front. An input port (6) through which the object (A) is input is provided. The insertion port (6) is followed by an insertion passage (7) that is inclined downward at a predetermined angle toward the rear of the case body (2).
挿入通路(7)は、上下1対のガイド板(8)(9)により形成されており、第1通路部(7a)と、この第1通路部(7a)の下端に、屈曲部(7b)を介して連設された第2通路部(7c)とからなっている。 The insertion passage (7) is formed by a pair of upper and lower guide plates (8) and (9), and a bent portion (7b) is formed at the lower end of the first passage portion (7a) and the first passage portion (7a). ) Through the second passage portion (7c).
上側ガイド板(8)は、上面カバー(5)に固定されており、図3に示すように、第1通路部(7a)の上面となる第1ガイド面を形成する基端部(8a)と、第2通路部(7c)の上面となる第2ガイド面を形成する先端部(8b)とを有し、先端部(8b)は、第1通路部(7a)から第2通路部(7c)に向けて挿入されて来る被細断物(A)の先端を下方に向けて案内する目的と、能力以上の硬い物、例えばプラスチック板や金属板等が挿入されたとき、その挿入を抑止する目的で、挿入通路(7)の屈曲部(7b)を形成するように、下方に向けて屈曲または湾曲させてられている。 The upper guide plate (8) is fixed to the upper surface cover (5), and as shown in FIG. 3, the base end portion (8a) that forms the first guide surface that becomes the upper surface of the first passage portion (7a). And a distal end portion (8b) that forms a second guide surface serving as an upper surface of the second passage portion (7c), and the distal end portion (8b) extends from the first passage portion (7a) to the second passage portion ( 7c) For the purpose of guiding the tip of the shredded object (A) that is inserted downward, and when a hard object exceeding its capacity, such as a plastic plate or a metal plate, is inserted, insert it. For the purpose of restraining, it is bent or curved downward so as to form a bent portion (7b) of the insertion passage (7).
下側ガイド板(9)は、第1通路部(7a)の下面となる第1ガイド面を形成する基端部(9a)と、第2通路部(7c)の下面となる第2ガイド面を形成する先端部(9b)とを有し、投入口(6)側の端部(9c)が軸(10)をもって上面カバー(5)に枢着され、先端部(9b)側が下方に傾動自在に取り付けられている。なお、下側ガイド板(9)の先端部(9b)は、上側ガイド板(8)の先端部(8b)と協働して、第2通路部(7a)が後下方に向かって拡開するように、ほぼ真下に向かって垂下するように屈曲させられている。 The lower guide plate (9) includes a base end portion (9a) that forms a first guide surface that is a lower surface of the first passage portion (7a), and a second guide surface that is a lower surface of the second passage portion (7c). The end (9c) on the inlet (6) side is pivotally attached to the top cover (5) with the shaft (10), and the end (9b) side tilts downward. It is attached freely. The tip portion (9b) of the lower guide plate (9) cooperates with the tip portion (8b) of the upper guide plate (8) so that the second passage portion (7a) expands rearward and downward. As shown, it is bent so as to hang down almost directly below.
下側ガイド板(9)は、上側ガイド板(8)との間に、数枚の紙類を重ねた状態で挿入可能な挿入通路(7)を形成するための間隔(a)を確保するように、基端部(9a)が上側ガイド板(8)の基端部(8a)と平行に配置され、この間隔(a)を維持するように、板ばね(11)により、上向きに付勢されている。また、下面側には、投入口(6)から挿入通路(7)の間隔(a)以上の異物や厚紙等の厚い物が挿入され、下側ガイド板(9)が板ばね(11)の付勢力に抗して下方(矢印方向)に傾動したとき、この傾動による下側ガイド板(9)の移動を検知する、リミットスイッチからなる厚物検知センサ(12)が設けられている。 Between the lower guide plate (9) and the upper guide plate (8), an interval (a) is formed for forming an insertion passage (7) that can be inserted in a state where several sheets of paper are stacked. As described above, the base end portion (9a) is arranged in parallel with the base end portion (8a) of the upper guide plate (8), and is attached upward by the leaf spring (11) so as to maintain this distance (a). It is energized. Also, on the lower surface side, a foreign object or a thick object such as cardboard exceeding the interval (a) of the insertion passage (7) is inserted from the insertion port (6), and the lower guide plate (9) of the leaf spring (11) is inserted. A thick object detection sensor (12) comprising a limit switch is provided for detecting the movement of the lower guide plate (9) due to the tilt when tilted downward (in the direction of the arrow) against the urging force.
挿入通路(7)の下方には、後部と前部の1対の細断ローラ(13a)(13b)が、互いに噛合せた状態で配設されている。ここで、細断ローラ(13a)(13b)間の噛み合い部(B)と挿入通路(7)との関係は、図3に示すように、上側ガイド板(8)の先端部(8b)から真っ直ぐ斜め後下方に向かって延びる延長線(C1)が、噛み合い部(B)の中心に対して、わずかの距離(x)だけ後方に変位するように設定してある。 Below the insertion passage (7), a pair of chopping rollers (13a) (13b) at the rear and the front are arranged in mesh with each other. Here, the relationship between the meshing portion (B) between the chopping rollers (13a) and (13b) and the insertion passage (7) is as shown in FIG. 3 from the tip portion (8b) of the upper guide plate (8). The extension line (C1) extending straight diagonally rearward and downward is set so as to be displaced rearward by a slight distance (x) with respect to the center of the meshing part (B).
細断ローラ(13a)(13b)は、図3〜図6に示すように、前後1対の回転軸(14a)(14b)のそれぞれに、外周面に、複数の刃(16)と切欠凹部(17)とを、回転方向に向かって交互に繰り返すように設けたほぼ円盤状の複数のカッタ(15a)(15b)を、相対回転不能として外嵌して列設したものよりなっており、両回転軸(14a)(14b)は、各列の隣接するカッタ(15a)(15a)、(15b)(15b)間に、他の列のカッタ(15b)(15a)が、ピッチをずらせて、交互に入り込んで互いに平行をなすように配設され、両列の互いに隣接するカッタ(15a)(15b)同士が摺り合わされた状態で互いに逆方向に回転させられるようになっている。
As shown in FIGS. 3 to 6, the chopping rollers (13a) and (13b) are provided with a plurality of blades (16) and notch recesses on the outer peripheral surface of each of the pair of front and rear rotating shafts (14a) and (14b). (17) and a plurality of substantially disc-shaped cutters (15a) (15b) provided so as to be repeated alternately in the rotation direction, and are arranged so as to be externally fitted so as not to be relatively rotatable, Both rotary shafts (14a) and (14b) are arranged so that the cutters (15b) and (15a) in the other rows shift the pitch between the adjacent cutters (15a) (15a) and (15b) (15b) in each row. The two
すべてのカッタ(15a)(15b)は同一形状とし、カッタ(15a)とカッタ(15b)とは、互いに向きを逆にして、回転軸(14a)(14b)に取り付けられている。また、各カッタ(15a)(15b)の内面には、同じ位置に求心方向に向かって突出するキー(18)が設けられている。 All the cutters (15a) and (15b) have the same shape, and the cutter (15a) and the cutter (15b) are attached to the rotating shafts (14a) and (14b) with their directions reversed. A key (18) that protrudes toward the centripetal direction is provided at the same position on the inner surface of each cutter (15a) (15b).
図5に示すように、各回転軸(14a)(14b)の外周面には、ねじれ角θの小さな螺旋状のキー溝(19)が設けられている。
このねじれ角θは、両細断ローラ(13a)(13b)により被細断物(A)を細断しうる有効細断幅をW、各カッタ(15a)(15b)における刃(16)の数をnとしたとき、有効細断幅W内においてほぼ180°/nだけねじれるような角度としてある。
As shown in FIG. 5, a spiral key groove (19) having a small twist angle θ is provided on the outer peripheral surface of each rotating shaft (14a) (14b).
This twist angle θ is W for the effective shredding width at which the shredded object (A) can be shredded by the shredding rollers (13a) (13b), and the blade (16) of each cutter (15a) (15b). When the number is n, the angle is twisted by about 180 ° / n within the effective shredding width W.
各細断ローラ(13a)(13b)は、各回転軸(14a)(14b)に、複数のカッタ(15a)(15b)を、そのキー(18)がキー溝(19)に係合するようにして、また互いに隣接するものの間に、相手側のカッタ(15b)(15a)の厚さとほぼ同じ厚さのリング状のスペーサ(20)を挟むようにして順次外嵌することにより形成されている。
その結果、図6に示すように、各細断ローラ(13a)(13b)の外周面における互いに隣接する各カッタ(15a)(15b)の互いに近接する刃先同士を順次結んだ線(L)も、回転軸(14a)(14b)を中心とするねじれ角θの螺旋を描く。
Each chopping roller (13a) (13b) has a plurality of cutters (15a) (15b) on each rotary shaft (14a) (14b), and its key (18) engages with the keyway (19). In addition, a ring-shaped spacer (20) having substantially the same thickness as the counterpart cutters (15b) (15a) is sandwiched between the adjacent ones so as to be sequentially fitted.
As a result, as shown in FIG. 6, a line (L) that sequentially connects the cutting edges adjacent to each other of the cutters (15a) (15b) adjacent to each other on the outer peripheral surface of each shred roller (13a) (13b) is also obtained. Then, a spiral with a twist angle θ about the rotation axes (14a) and (14b) is drawn.
したがって、各細断ローラ(13a)(13b)のカッタ(15a)(15b)の刃(16)が、互いに半ピッチだけずれて、逆方向に回転させられると、両細断ローラ(13a)(13b)は、常時1個の刃(16)しか被細断物(A)と噛合することはなく、複数のカッタ(15a)(15b)の刃(16)が同時に被細断物(A)を噛み込むのを防止することができる。 Therefore, when the blades (16) of the cutters (15a) and (15b) of the chopping rollers (13a) and (13b) are shifted from each other by a half pitch and rotated in the opposite direction, both chopping rollers (13a) ( In 13b), only one blade (16) always meshes with the object to be cut (A), and the blades (16) of a plurality of cutters (15a) and (15b) are simultaneously cut into the object to be shredded (A). Biting can be prevented.
また、このときの各細断ローラ(13a)(13b)における互いに隣接するカッタ(15a)(15a)、(15b)(15b)の位相差Δθは、各カッタ(15a)(15b)の厚さをTとしたとき、ほぼ2θT/Wとなる。
すなわち、位相差Δθは、ねじれ角θを、各細断ローラ(13a)(13b)におけるカッタ(15a)(15b)の枚数N1で割ったものであるから、
Δθ=θ/N1・・・・・・・・・・・・・・・(式1)
である。また、N1は、有効細断幅Wをカッタ(15a)(15b)の厚さTで割ったものの2分の1にほぼ等しいので、
N1=W/2T・・・・・・・・・・・・・・・(式2)
である。したがって、上記式1と式2とから、
Δθ=2θT/W・・・・・・・・・・・・・・(式3)
となる。
Further, at this time, the phase difference Δθ between the cutters (15a) (15a), (15b) (15b) adjacent to each other in each chopping roller (13a) (13b) is the thickness of each cutter (15a) (15b) When T is T, it is approximately 2θT / W.
That is, the phase difference Δθ is obtained by dividing the twist angle θ by the number N1 of the cutters (15a) and (15b) in each chopping roller (13a) and (13b).
Δθ = θ / N1 (Equation 1)
It is. N1 is substantially equal to one half of the effective shredding width W divided by the thickness T of the cutter (15a) (15b).
N1 = W / 2T (Equation 2)
It is. Therefore, from
Δθ = 2θT / W (Equation 3)
It becomes.
このように、各細断ローラ(13a)(13b)における互いに隣接するカッタ(15a)(15a)、(15b)(15b)の位相差Δθを、2θT/Wと定めて、各カッタ(15a)(15b)を各回転軸(14a)(14b)に正確に取り付けることもできる。 As described above, the phase difference Δθ between the cutters (15a) (15a), (15b) (15b) adjacent to each other in each shredding roller (13a) (13b) is set to 2θT / W, and each cutter (15a) (15b) can also be accurately attached to each rotating shaft (14a) (14b).
具体例として、例えば、有効細断幅Wを、A4の用紙の短片(210.2mm)が入るに十分な大きさである220mmとし、各カッタ(15a)(15b)の厚さTを2mm、かつ各カッタ(15a)(15b)の刃数nを10枚としたときは、
N1=W/2T=220/4=55
θ=180°/n=180°/10=18°
Δθ=2θT/W=0.327°
となる。
As a specific example, for example, the effective shredding width W is set to 220 mm which is large enough to accommodate a short piece (210.2 mm) of A4 paper, the thickness T of each cutter (15a) (15b) is 2 mm, and When the number n of blades of each cutter (15a) (15b) is 10,
N1 = W / 2T = 220/4 = 55
θ = 180 ° / n = 180 ° / 10 = 18 °
Δθ = 2θT / W = 0.327 °
It becomes.
同じ条件で、刃数nを7枚としたときは、
N1=W/2T=220/4=55
θ=180°/n=180°/7=25.7°
Δθ=2θT/W=0.467°
となる。
When the number of blades is 7 under the same conditions,
N1 = W / 2T = 220/4 = 55
θ = 180 ° / n = 180 ° / 7 = 25.7 °
Δθ = 2θT / W = 0.467 °
It becomes.
1対の回転軸(14a)(14b)は、図2に示すように、上面カバー(5)の下方に配設した正逆転可能のモータ(21)により正転駆動されると、互いに隣接するカッタ(15b)(15b)同士が摺り合わされた状態で互いに逆方向に回転し、被細断物(A)の細断が行われるようになっている。 As shown in FIG. 2, the pair of rotating shafts (14a) and (14b) are adjacent to each other when driven forward by a motor (21) capable of forward and reverse rotation disposed below the upper surface cover (5). The cutters (15b) and (15b) rotate in directions opposite to each other and are chopped (A).
ケース本体(2)内の下部収容空間(2b)には、細断部から排出される細断屑を収容する屑収容箱(C)が、前面の開口部(2c)から出し入れ可能に収容されている。下部収容空間(2b)の底部上面には、リミットスイッチからなる屑収容箱検知センサ(22)が設置されており、この屑収容箱検知センサ(22)は、屑収容箱(C)が定位置に位置しているか否かを検知する。 In the lower housing space (2b) in the case body (2), a waste storage box (C) for storing shredded waste discharged from the shredded portion is housed in a removable manner from the front opening (2c). ing. On the upper surface of the bottom of the lower storage space (2b), a waste storage box detection sensor (22) comprising a limit switch is installed, and this waste storage box detection sensor (22) is located at a fixed position. It is detected whether it is located in.
ケース本体(2)の前面には、扉(23)が開閉自在に設けられており、この扉(23)の開閉状態は、ケース本体(2)の扉ヒンジ部(23a)近傍に設けたリミットスイッチからなる扉開検知センサ(24)により検知されるようになっている。この扉開検知センサ(24)は、扉(23)の開状態で、駆動部のモータ(21)の作動を停止し、扉(23)の閉状態では、モータ(21)の駆動を許容するように作動する。 A door (23) is provided on the front surface of the case body (2) so that it can be opened and closed. The open / closed state of the door (23) is a limit provided near the door hinge (23a) of the case body (2). It is detected by a door opening detection sensor (24) comprising a switch. This door open detection sensor (24) stops the operation of the motor (21) of the drive unit when the door (23) is open, and allows the motor (21) to be driven when the door (23) is closed. Operates as follows.
投入口(6)における挿入通路(7)の間口幅方向には、図1に示すように、被細断物(A)の挿入状態を検知する左右1対の用紙センサ(25)(25)が設置されている。各用紙センサ(25)は、図2及び図3に示すように、上側ガイド板(8)と下側ガイド板(9)とに、互いに対向するように設けられた投光素子(26a)と受光素子(26b)とからなっている。 As shown in FIG. 1, a pair of left and right paper sensors (25), (25) for detecting the insertion state of the shredded object (A) in the width direction of the insertion passage (7) at the insertion port (6). Is installed. As shown in FIGS. 2 and 3, each paper sensor (25) includes a light projecting element (26a) provided on the upper guide plate (8) and the lower guide plate (9) so as to face each other. It consists of a light receiving element (26b).
操作パネル(4)上には、図1に示すように、スタート/リスタート釦(27a)、リバース釦(27b)、ストップ釦(27c)等のボタンスイッチ類(27)や、電源のON/OFF、運転中または停止中、厚物有り、屑収容箱満杯、開扉・屑収容箱なし、モータ過熱等を表示するLED表示ランプ群(28)が設けられている。 On the operation panel (4), as shown in FIG. 1, button switches (27) such as a start / restart button (27a), a reverse button (27b), a stop button (27c), etc. There is an LED display lamp group (28) for displaying OFF, during operation or stop, with thick material, full of waste storage box, open door / no waste storage box, motor overheating, etc.
次に、このシュレッダの動作について説明する。
投入口(6)から被細断物(A)が投入されると、これが2個の用紙センサ(25)(25)により検知され、モータ(21)が正転駆動させられ、細断ローラ(13a)(13b)が回転させられる。投入口(6)から投入された被細断物(A)は、図3中に、矢印(D)で示すように、投入口(6)では、下側ガイド板(9)上を滑りながら第1通路部(7a)内を進む。先端が第2通路(7c)内に到達すると、上側ガイド板(8)の先端部(8b)に当接し、その後、その先端部(8b)の下面に摺接しつつ、第2通路部(7b)内を後下方に向かって進む。第2通路部(7b)を出ると、そのまま噛み合い部(B)に向かって進み、噛み合い部(B)に入る。
Next, the operation of this shredder will be described.
When the shredded object (A) is thrown from the slot (6), this is detected by the two paper sensors (25) and (25), the motor (21) is driven to rotate forward, and the shredder roller ( 13a) and 13b are rotated. As shown by the arrow (D) in FIG. 3, the shredded object (A) thrown from the slot (6) slides on the lower guide plate (9) at the slot (6). Proceed through the first passage (7a). When the tip reaches the second passage (7c), it comes into contact with the tip portion (8b) of the upper guide plate (8), and then slidably comes into contact with the lower surface of the tip portion (8b). ) Go backwards and down. When leaving the second passage portion (7b), it proceeds toward the meshing portion (B) as it is and enters the meshing portion (B).
噛み合い部(B)に噛み込まれた被細断物(A)は、図3に示すように、カッタ(15a)とカッタ(15b)との間に噛み込まれ、漸次細断される。 As shown in FIG. 3, the object to be shredded (A) bitten in the meshing part (B) is bitten between the cutter (15a) and the cutter (15b) and gradually shredded.
ここで、本実施の形態では、両細断ローラ(13a)(13b)におけるカッタ(15a)(15b)を、互いに隣接するものの近接する刃先同士を順次結んだ線(L)が、回転軸(14a)(14b)を中心とする螺旋を描くように整列させて回転軸(14a)(14b)に取り付けるとともに、有効細断幅Wに対する線(L)が描く螺旋のねじれ角θを、各カッタ(15a)(15b)における刃(16)の数をnとしたときのほぼ180°/nとし、また各細断ローラ(13a)(13b)における互いに隣接するカッタ(15a)(15a)、(15b)(15b)の位相差Δθを、ほぼ2θT/Wとしてあるので、各細断ローラ(13a)(13b)のカッタ(15a)(15b)の刃(16)が、互いに半ピッチだけずれて、逆方向に回転させられると、両細断ローラ(13a)(13b)は、常時1個の刃(16)しか被細断物(A)と噛合することはなく、複数のカッタ(15a)(15b)の刃(16)が同時に被細断物(A)を噛み込むのを防止することができ、もってモータ(21)への負荷の軽減効果、および騒音の抑制効果を高めることができる。 Here, in the present embodiment, a line (L) in which the cutters (15a) and (15b) in the two chopping rollers (13a) and (13b) are sequentially connected to each other adjacent to each other is adjacent to the rotating shaft ( 14a) and 14b) are aligned so as to draw a spiral and attached to the rotary shafts (14a) and (14b), and the twist angle θ of the spiral drawn by the line (L) with respect to the effective shredding width W is set for each cutter. (15a) When the number of blades (16) in (15b) is n, it is approximately 180 ° / n, and the cutters (15a) (15a), ( Since the phase difference Δθ of 15b and 15b is approximately 2θT / W, the blades (16) of the cutters (15a) and (15b) of the chopping rollers (13a) and (13b) are displaced from each other by a half pitch. When rotated in the opposite direction, the two chopping rollers (13a) and (13b) always engage only one blade (16) with the object to be chopped (A), and a plurality of cutters (15a) (15b) blade (16) bites the shredded object (A) at the same time Therefore, the effect of reducing the load on the motor (21) and the effect of suppressing noise can be enhanced.
なお、上述の実施形態においては、各カッタ(15a)(15b)にキー(18)を設け、かつ回転軸(14a)(14b)に、上記キー(18)が係合するキー溝(19)を設けてあるが、各カッタ(15a)(15b)にキー溝(19)を設け、かつ回転軸(14a)(14b)に、上記キー溝(19)に係合するねじれ角θの螺旋状のキー(18)を設けてもよい。 In the above-described embodiment, each cutter (15a) (15b) is provided with a key (18), and the rotary shaft (14a) (14b) is engaged with the key groove (19). However, each cutter (15a) (15b) is provided with a key groove (19), and the rotary shaft (14a) (14b) is engaged with the key groove (19) in a spiral shape with a twist angle θ. The key (18) may be provided.
また、ねじれ角θは、180°/nに近いほど好ましいが、有効細断幅Wは、実際に細断する被細断物(A)の寸法より若干余裕を持って設定してあり、各細断ローラ(13a)(13b)の両側部におけるカッタ(15a)(15b)の刃(16)は、直接被細断物(A)に当たる機会が少ないこと等を勘案すると、±10%程度の幅を持たせることができる。請求項1および2における「ほぼ」は、その意味である。
Further, the twist angle θ is preferably as close to 180 ° / n, but the effective shredding width W is set with a margin more than the dimension of the shredded object (A) to be actually shredded. Taking into account the fact that the blades (16) of the cutters (15a) and (15b) on both sides of the chopping rollers (13a) and (13b) have little chance of directly hitting the chopped object (A), etc. Can have a width. “Substantially” in
(1)シュレッダ
(2)ケース本体
(2a)上部収容空間
(2b)下部収容空間
(2c)開口部
(3)細断ユニット
(4)操作パネル
(5)上面カバー
(6)投入口
(7)挿入通路
(7a)第1通路部
(7b)屈曲部
(7c)第2通路部
(8)上側ガイド板
(8a)基端部
(8b)先端部
(9)下側ガイド板
(9a)基端部
(9b)先端部
(9c)端部
(10)軸
(11)板ばね
(12)厚物検知センサ
(13a)細断ローラ
(13b)細断ローラ
(14a)回転軸
(14b)回転軸
(15a)カッタ
(15b)カッタ
(16)刃
(17)切欠凹部
(18)キー
(19)キー溝
(20)スペーサ
(21)モータ
(22)屑収容箱検知センサ
(23)扉
(23a)扉ヒンジ部
(24)扉開検知センサ
(25)用紙センサ
(26a)投光素子
(26b)受光素子
(27)スイッチ類
(27a)スタート/リスタート釦
(27b)リバース釦
(27c)ストップ釦
(28)LED表示ランプ群
(A)被細断物
(a)間隔
(B)噛み合い部
(C)屑収容箱
(D)矢印
(L)線
(n)各カッタにおける刃の数
(N1)各細断ローラにおけるカッタの枚数
(T)カッタの厚さ
(W)有効細断幅
(x)ずれ量
(θ)ねじれ角
(Δθ)各細断ローラにおける互いに隣接するカッタの位相差
(1) Shredder
(2) Case body
(2a) Upper housing space
(2b) Lower housing space
(2c) Opening
(3) Shred unit
(4) Operation panel
(5) Top cover
(6) Slot
(7) Insertion passage
(7a) First passage
(7b) Bending part
(7c) Second passage
(8) Upper guide plate
(8a) Base end
(8b) Tip
(9) Lower guide plate
(9a) Base end
(9b) Tip
(9c) End
(10) axis
(11) Leaf spring
(12) Thick object detection sensor
(13a) Shredded roller
(13b) Shredded roller
(14a) Rotating shaft
(14b) Rotating shaft
(15a) Cutter
(15b) Cutter
(16) Blade
(17) Notch recess
(18) key
(19) Keyway
(20) Spacer
(21) Motor
(22) Waste container detection sensor
(23) Door
(23a) Door hinge
(24) Door open detection sensor
(25) Paper sensor
(26a) Emitting element
(26b) Light receiving element
(27) Switches
(27a) Start / Restart button
(27b) Reverse button
(27c) Stop button
(28) LED display lamp group
(A) Shredded material
(a) Interval
(B) Meshing part
(C) Waste storage box
(D) Arrow
(L) line
(n) Number of blades in each cutter
(N1) Number of cutters in each chopping roller
(T) Cutter thickness
(W) Effective shredding width
(x) Deviation amount
(θ) Helix angle
(Δθ) Phase difference between adjacent cutters in each chopping roller
Claims (4)
各列のカッタを、互いに隣接するものの近接する刃先同士を順次結んだ線が、回転軸を中心とする螺旋を描くように整列させて回転軸に取り付けるとともに、前記両カッタ列により被細断物を細断しうる有効細断幅Wに対する前記螺旋のねじれ角θを、各カッタにおける刃の数をnとしたとき、ほぼ180°/nとしたことを特徴とするシュレッダ。 Each of a pair of rotating shafts is fitted with a plurality of substantially disc-shaped cutters provided on the outer peripheral surface so as to alternately repeat a plurality of blades and notch recesses in the rotational direction so that they cannot be rotated relative to each other. The other pair of rotating shafts are arranged in parallel with each other by shifting the pitch between the adjacent cutters of each row by shifting the pitch between the adjacent pairs of rotating shafts. In a shredder configured to rotate in opposite directions with the cutters being rubbed together,
The cutters in each row are attached to the rotary shaft so that the lines that sequentially connect adjacent blade edges, but adjacent to each other, draw a spiral centering on the rotary shaft, and are to be shredded by the two cutter rows. A shredder characterized in that the twist angle θ of the spiral with respect to the effective shredding width W that can be shredded is approximately 180 ° / n, where n is the number of blades in each cutter.
The shredder according to claim 1, wherein n ≧ 7.
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