JP3698942B2 - Shearing equipment - Google Patents

Shearing equipment Download PDF

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Publication number
JP3698942B2
JP3698942B2 JP2000023558A JP2000023558A JP3698942B2 JP 3698942 B2 JP3698942 B2 JP 3698942B2 JP 2000023558 A JP2000023558 A JP 2000023558A JP 2000023558 A JP2000023558 A JP 2000023558A JP 3698942 B2 JP3698942 B2 JP 3698942B2
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Japan
Prior art keywords
blade
cutting
rotary blade
shearing device
fixed blade
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JP2000023558A
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Japanese (ja)
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JP2001212820A (en
Inventor
芳行 今西
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摂津技研株式会社
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Priority to JP2000023558A priority Critical patent/JP3698942B2/en
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【0001】
【発明の属する技術分野】
本発明は、例えば、長尺のペレット材料等をせん断してペレットを製造する際等に用いられるせん断装置に関するものである。
【0002】
【従来の技術】
樹脂等のペレットを製造するペレット製造機は、一般に、図7に示すように、ペレット材料を長尺の紐状に押し出す押し出し装置30と、押し出されたペレット材料33を冷却する冷却槽31と、冷却されたペレット材料33をせん断して粒状のペレット34を形成するせん断装置32とを備えている。
【0003】
上記せん断装置32は、図8に示すように、外周面に複数の切刃36が形成された回転自在の回転刃35と、上記切刃36との間でペレット材料33をせん断する固定刃37とを備えている。そして、上記従来のせん断装置32では、一般に、切れ味を良くするため、図9に示すように、上記切刃36を、回転刃35の軸心に対してらせん状に設けることが行われている。
【0004】
【発明が解決しようとする課題】
しかしながら、上記せん断装置32では、切刃36がらせん状に設けられているため、切刃36自体をらせん状に形成する必要があり、切刃36の加工や製造が困難でコストが高く、精度を上げるのも困難であった。また、回転刃35への切刃36の取付けは、一般にろう付けによって行われることから、らせん状の台にらせん状の切刃36をろう付けしなければならず、取付も困難でコストが高く、精度を上げるのが極めて困難であった。そこで、短い切刃を多数準備し、らせん状の台に短い切刃をらせん状になるようにつなぎ合わせて取り付けることも行われているが、取り付け作業が煩雑になってコスト面でそれほど有利にならないだけでなく、精度を上げるのがますます困難になるという問題があった。
【0005】
本発明は、このような事情に鑑みなされたもので、低コストで精度も高く、しかも切れ味の良いせん断装置の提供を目的とする。
【0006】
【課題を解決するための手段】
上記目的を達成するため、本発明のせん断装置は、回転自在に軸支された胴部の外周面に軸心方向に延びる切刃が形成された回転刃と、上記回転刃の切刃との間に挿入された被せん断物をせん断する固定刃とを備え、上記回転刃の軸心と固定刃が相対的に傾斜角をもって配設され、上記固定刃の刃先が曲線状に形成されることにより、上記回転刃の切刃と固定刃との長手方向におけるクリアランスを実質的に一定にし、長尺のペレット材料をせん断してペレットを製造するペレット製造機に用いられるものであることを要旨とする。
【0007】
すなわち、本発明のせん断装置は、回転自在に軸支された胴部の外周面に軸心方向に延びる切刃が形成された回転刃を備えている。このため、従来のようにらせん状の切刃を必要とせず、回転刃は、胴部の外周面に切刃を軸心方向に延びるよう形成したものを用いればよい。そして、切刃の加工や製造が容易になるうえ、取り付けも極めて容易に行うことができる。したがって、コストが大幅に低下し、高精度も確保できる。また、上記固定刃の刃先が曲線状に形成されることにより、回転刃の切刃と固定刃との長手方向におけるクリアランスを実質的に一定にするとともに、上記回転刃の軸心と固定刃が相対的に傾斜角をもって配設されていることから、良好な切れ味も確保できる。また、長尺のペレット材料をせん断してペレットを製造するペレット製造機に用いられるものであるため、低コストで精度も高く、しかも切れ味の良いペレット製造機となる。
【0008】
本発明のせん断装置において、上記回転刃の切刃が、胴部の軸心と実質的に平行に設けられている場合には、切刃の加工や製造が容易になるうえ、取り付けも極めて容易に行うことができ、コストが大幅に低下し、高精度も確保できる。
【0009】
本発明のせん断装置において、上記回転刃の切刃が、胴部の略全長にわたって設けられている場合には、切刃の取り付けが極めて容易に行うことができ、コストが大幅に低下し、高精度も確保できる。
【0011】
【発明の実施の形態】
つぎに、本発明の実施の形態を詳しく説明する。
【0012】
図1〜図4は、本発明のせん断装置の一実施の形態を示す図である。このせん断装置は、回転自在に軸支された胴部3の外周面に切刃2が形成された回転刃1と、上記回転刃1の切刃2との間に挿入された被せん断物をせん断する固定刃5とを備えている。
【0013】
上記回転刃1は、円筒状の胴部3が軸4に軸支され、上記胴部3の外周面に、軸心方向に延びる複数(この例では8つ)の切刃2が形成されて構成されている。上記切刃2は、胴部3の軸心と実質的に平行に、かつ、胴部3の全長にわたって設けられている。
【0014】
一方、上記固定刃5は、上記胴部3よりもやや長い長板状を呈しており、上記切刃2と対向する側に刃先6が形成されている。そして、上記刃先6は、幅方向に凹曲する曲線状に形成されている。
【0015】
そして、上記せん断装置は、上記回転刃1が水平に配設され、固定刃5が、上記回転刃1の軸心と相対的に傾斜角をもつよう斜めに傾斜させて配設されている。そして、上記固定刃5の刃先6が曲線状に形成されているため、上記回転刃1の切刃2と固定刃5の刃先6との長手方向におけるクリアランスが一定になっている。
【0016】
上記回転刃1の切刃2は、例えば、超硬合金等から形成されるものを用いることができる。そして、上記切刃2は、例えば、胴部3の外周面にろう付け等により取り付けることができる。このとき、上記回転刃1の切刃2が、胴部3の軸心と実質的に平行に設けられ、胴部3の略全長にわたって設けられているため、切刃2の加工や製造が容易になるうえ、切刃2の取り付けも極めて容易に行うことができ、コストが大幅に低下し、高精度も確保できる。
【0017】
また、上記固定刃5を製造する場合には、図5に示すように、例えば、上記回転刃1と直径および長さが同一寸法に形成された円筒形の砥石7を準備し、この砥石7を水平に軸支するとともに、固定刃5を回転刃1と対向する位置に取り付けるときと同じ傾斜角度でもって斜めに配設する。そして、この状態で砥石7を回転させて固定刃5の先端を研摩することにより、刃先6を、回転刃1と所定の傾斜角度をもつよう斜めに傾斜させて配設したときに、切刃2の先端と長手方向で一定のクリアランスを保つような曲線状に形成することができる。さらに、上記のようにして研摩した固定刃5の刃先6の逃げ面を、マシニングセンタ等の工作機械により加工することが行われる。なお、上記砥石7の直径や長さは、上述したものに限定するものではなく、短い砥石を往復させながら加工することもできるし、小径の砥石を用いて加工することも可能である。
【0018】
そして、上記せん断装置は、例えば、長尺のペレット材料をせん断してペレットを製造するペレット製造機に用いることができる(図7参照)。
【0019】
上記せん断装置では、従来のようにらせん状の切刃を必要とせず、回転刃1は、胴部3の外周面に切刃2を軸心方向に延びるよう形成したものを用いればよいことから、切刃2の加工や製造が容易になるうえ、取り付けも極めて容易に行うことができる。したがって、コストが大幅に低下し、高精度も確保できる。また、上記固定刃5の刃先6が曲線状に形成されることにより、回転刃1の切刃2と固定刃5の刃先6との間のクリアランスが長手方向において一定に保持され、上記回転刃1の軸心と固定刃5とが相対的に傾斜角をもって配設されていることから、良好な切れ味も確保できる。
【0020】
図6は、本発明の第2の実施の形態を示す。この例では、固定刃5が水平に設けられ、回転刃1が、上記固定刃5に対して所定の傾斜角度になるよう傾斜されて配設されている。それ以外は、上記第1の実施の形態と同様であり、同様の作用効果を奏する。
【0021】
なお、上記各実施の形態では、本発明のせん断装置をペレット製造機に適用した例を示したが、これに限定するものではなく、長尺状やシート状のものを連続的にせん断する機械装置であれば、どのようなものにも適用することができる。これらの場合でも、同様の作用効果を奏する。
【0022】
【発明の効果】
以上のように、本発明のせん断装置によれば、回転自在に軸支された胴部の外周面に軸心方向に延びる切刃が形成された回転刃を備えている。このため、従来のようにらせん状の切刃を必要とせず、回転刃は、胴部の外周面に切刃を軸心方向に延びるよう形成したものを用いればよい。そして、切刃の加工や製造が容易になるうえ、取り付けも極めて容易に行うことができる。したがって、コストが大幅に低下し、高精度も確保できる。また、上記固定刃の刃先が曲線状に形成されることにより、回転刃の切刃と固定刃との長手方向におけるクリアランスを略一定にするとともに、上記回転刃の軸心と固定刃が相対的に傾斜角をもって配設されていることから、良好な切れ味も確保できる。また、長尺のペレット材料をせん断してペレットを製造するペレット製造機に用いられるものであるため、低コストで精度も高く、しかも切れ味の良いペレット製造機となる。
【図面の簡単な説明】
【図1】本発明の一実施の形態のせん断装置に用いる回転刃を示す斜視図である。
【図2】上記せん断装置に用いる固定刃を示す図であり、(a)は側面図、(b)は平面図である。
【図3】上記せん断装置を示す説明図である。
【図4】上記せん断装置の作用を示す説明図である。
【図5】上記固定刃の製造工程を示す説明図である。
【図6】本発明の第2の実施の形態のせん断装置を示す説明図である。
【図7】従来のペレット製造機を示す構成説明図である。
【図8】上記ペレット製造機の要部を示す説明図である。
【図9】上記ペレット製造機に用いる回転刃を示す説明図である。
【符号の説明】
1 固定刃
2 切刃
3 胴部
5 固定刃
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shearing device used when, for example, a pellet is produced by shearing a long pellet material or the like.
[0002]
[Prior art]
As shown in FIG. 7, a pellet manufacturing machine that manufactures pellets of resin or the like generally has an extrusion device 30 that extrudes the pellet material into a long string shape, a cooling tank 31 that cools the extruded pellet material 33, And a shearing device 32 for shearing the cooled pellet material 33 to form granular pellets 34.
[0003]
As shown in FIG. 8, the shearing device 32 includes a rotatable rotary blade 35 having a plurality of cutting blades 36 formed on the outer peripheral surface, and a fixed blade 37 that shears the pellet material 33 between the cutting blades 36. And has. And in the said conventional shearing device 32, generally in order to improve a sharpness, as shown in FIG. 9, providing the said cutting blade 36 helically with respect to the axial center of the rotary blade 35 is performed. .
[0004]
[Problems to be solved by the invention]
However, in the shearing device 32, since the cutting blade 36 is provided in a spiral shape, it is necessary to form the cutting blade 36 in a spiral shape, and it is difficult to process and manufacture the cutting blade 36, and the cost is high. It was also difficult to raise. In addition, since the cutting blade 36 is generally attached to the rotary blade 35 by brazing, the helical cutting blade 36 must be brazed to the spiral base, which is difficult and expensive. It was extremely difficult to improve accuracy. Therefore, many short cutting blades are prepared, and the short cutting blades are connected to the spiral base so as to form a spiral shape, but the mounting work becomes complicated and the cost is not so advantageous. There is a problem that not only does it become difficult, but it becomes increasingly difficult to increase accuracy.
[0005]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a shearing device that is low in cost, high in accuracy, and good in sharpness.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a shearing device according to the present invention includes a rotary blade having a cutting blade extending in the axial direction on an outer peripheral surface of a body portion rotatably supported, and a cutting blade of the rotary blade. A fixed blade that shears the object to be sheared inserted therebetween, the axis of the rotary blade and the fixed blade are disposed at a relatively inclined angle, and the cutting edge of the fixed blade is formed in a curved shape. According to the above, the clearance in the longitudinal direction between the cutting blade and the fixed blade of the rotary blade is made substantially constant, and is used for a pellet manufacturing machine that manufactures pellets by shearing a long pellet material. To do.
[0007]
That is, the shearing device of the present invention includes a rotary blade in which a cutting blade extending in the axial direction is formed on the outer peripheral surface of a body portion that is rotatably supported. For this reason, a helical cutting blade is not required unlike the conventional one, and the rotary blade may be formed by extending the cutting blade on the outer peripheral surface of the trunk portion in the axial direction. Further, the cutting blade can be easily processed and manufactured, and can be attached very easily. Therefore, the cost is greatly reduced and high accuracy can be secured. Further, by forming the cutting edge of the fixed blade in a curved shape, the clearance in the longitudinal direction between the cutting blade and the fixed blade of the rotating blade is made substantially constant, and the axis of the rotating blade and the fixed blade are Since it is arranged with a relatively inclined angle, a good sharpness can be secured. Moreover, since it is used for the pellet manufacturing machine which manufactures a pellet by shearing a long pellet material, it becomes a pellet manufacturing machine with low cost, high accuracy, and good sharpness.
[0008]
In the shearing device of the present invention, when the cutting blade of the rotary blade is provided substantially parallel to the axial center of the body portion, the cutting blade can be easily processed and manufactured, and can be easily mounted. The cost can be greatly reduced and high accuracy can be secured.
[0009]
In the shearing device of the present invention, when the cutting blade of the rotary blade is provided over substantially the entire length of the body portion, the cutting blade can be attached very easily, and the cost is greatly reduced. Accuracy can be secured.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail.
[0012]
1-4 is a figure which shows one Embodiment of the shearing apparatus of this invention. In this shearing device, a shearing object inserted between a rotary blade 1 having a cutting blade 2 formed on the outer peripheral surface of a body 3 that is rotatably supported and a cutting blade 2 of the rotary blade 1. And a fixed blade 5 for shearing.
[0013]
In the rotary blade 1, a cylindrical body 3 is pivotally supported by a shaft 4, and a plurality (eight in this example) of cutting edges 2 extending in the axial direction are formed on the outer peripheral surface of the body 3. It is configured. The cutting edge 2 is provided substantially parallel to the axis of the body 3 and over the entire length of the body 3.
[0014]
On the other hand, the fixed blade 5 has a long plate shape slightly longer than the body portion 3, and a blade edge 6 is formed on the side facing the cutting blade 2. And the said blade edge | tip 6 is formed in the curve shape dented in the width direction.
[0015]
In the shearing device, the rotary blade 1 is disposed horizontally, and the fixed blade 5 is disposed obliquely so as to have an inclination angle relative to the axis of the rotary blade 1. Since the cutting edge 6 of the fixed blade 5 is formed in a curved shape, the clearance in the longitudinal direction between the cutting edge 2 of the rotary blade 1 and the cutting edge 6 of the fixed blade 5 is constant.
[0016]
As the cutting blade 2 of the rotary blade 1, for example, one formed of a cemented carbide or the like can be used. And the said cutting blade 2 can be attached to the outer peripheral surface of the trunk | drum 3 by brazing etc., for example. At this time, the cutting blade 2 of the rotary blade 1 is provided substantially in parallel with the axial center of the body portion 3 and is provided over substantially the entire length of the body portion 3, so that the cutting blade 2 can be easily processed and manufactured. In addition, the cutting blade 2 can be attached very easily, the cost is greatly reduced, and high accuracy can be ensured.
[0017]
When the fixed blade 5 is manufactured, as shown in FIG. 5, for example, a cylindrical grindstone 7 having the same diameter and length as the rotary blade 1 is prepared. Are horizontally supported, and are disposed obliquely at the same inclination angle as when the fixed blade 5 is mounted at a position facing the rotary blade 1. Then, when the grindstone 7 is rotated in this state and the tip of the fixed blade 5 is polished, the cutting edge 6 is inclined with respect to the rotating blade 1 so as to have a predetermined inclination angle. It can be formed in a curved shape so as to maintain a constant clearance in the longitudinal direction with the two tips. Further, the flank of the cutting edge 6 of the fixed blade 5 polished as described above is processed by a machine tool such as a machining center. The diameter and length of the grindstone 7 are not limited to those described above, and the grindstone 7 can be machined while reciprocating a short grindstone, or can be machined using a small-diameter grindstone.
[0018]
And the said shearing apparatus can be used for the pellet manufacturing machine which shears a long pellet material and manufactures a pellet, for example (refer FIG. 7).
[0019]
The above shearing device does not require a helical cutting edge as in the prior art, and the rotary blade 1 may be formed by forming the cutting edge 2 on the outer peripheral surface of the body 3 so as to extend in the axial direction. The cutting blade 2 can be easily processed and manufactured, and can be attached very easily. Therefore, the cost is greatly reduced and high accuracy can be secured. Further, by forming the cutting edge 6 of the fixed blade 5 in a curved shape, the clearance between the cutting edge 2 of the rotating blade 1 and the cutting edge 6 of the fixed blade 5 is kept constant in the longitudinal direction, and the rotating blade Since the axial center of 1 and the fixed blade 5 are disposed with a relatively inclined angle, a good sharpness can be secured.
[0020]
FIG. 6 shows a second embodiment of the present invention. In this example, the fixed blade 5 is provided horizontally, and the rotary blade 1 is disposed so as to be inclined at a predetermined inclination angle with respect to the fixed blade 5. Other than that, it is the same as that of the said 1st Embodiment, and there exists the same effect.
[0021]
In each of the above embodiments, an example in which the shearing device of the present invention is applied to a pellet manufacturing machine has been shown. However, the present invention is not limited to this, and a machine that continuously shears long or sheet-like ones. Any device can be applied. Even in these cases, the same effects can be obtained.
[0022]
【The invention's effect】
As described above, according to the shearing device of the present invention, the rotary blade is provided with the cutting blade extending in the axial direction on the outer peripheral surface of the body portion rotatably supported. For this reason, a helical cutting blade is not required unlike the conventional one, and the rotary blade may be formed by extending the cutting blade on the outer peripheral surface of the trunk portion in the axial direction. Further, the cutting blade can be easily processed and manufactured, and can be attached very easily. Therefore, the cost is greatly reduced and high accuracy can be secured. Further, since the cutting edge of the fixed blade is formed in a curved shape, the clearance in the longitudinal direction between the cutting blade and the fixed blade of the rotating blade is made substantially constant, and the axis of the rotating blade and the fixed blade are relative to each other. Since it is arrange | positioned with an inclination angle, favorable sharpness is securable. Moreover, since it is used for the pellet manufacturing machine which manufactures a pellet by shearing a long pellet material, it becomes a pellet manufacturing machine with low cost, high accuracy, and good sharpness.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a rotary blade used in a shearing device according to an embodiment of the present invention.
2A and 2B are diagrams showing a fixed blade used in the shearing device, wherein FIG. 2A is a side view and FIG. 2B is a plan view.
FIG. 3 is an explanatory view showing the shearing device.
FIG. 4 is an explanatory view showing the operation of the shearing device.
FIG. 5 is an explanatory view showing a manufacturing process of the fixed blade.
FIG. 6 is an explanatory view showing a shearing device according to a second embodiment of the present invention.
FIG. 7 is a configuration explanatory view showing a conventional pellet manufacturing machine.
FIG. 8 is an explanatory view showing a main part of the pellet manufacturing machine.
FIG. 9 is an explanatory view showing a rotary blade used in the pellet manufacturing machine.
[Explanation of symbols]
1 Fixed Blade 2 Cutting Blade 3 Body 5 Fixed Blade

Claims (3)

回転自在に軸支された胴部の外周面に軸心方向に延びる切刃が形成された回転刃と、上記回転刃の切刃との間に挿入された被せん断物をせん断する固定刃とを備え、上記回転刃の軸心と固定刃が相対的に傾斜角をもって配設され、上記固定刃の刃先が曲線状に形成されることにより、上記回転刃の切刃と固定刃との長手方向におけるクリアランスを実質的に一定にし、長尺のペレット材料をせん断してペレットを製造するペレット製造機に用いられるものであることを特徴とするせん断装置。A rotary blade in which a cutting blade extending in the axial direction is formed on an outer peripheral surface of a body portion rotatably supported; and a fixed blade that shears an object to be sheared inserted between the cutting blades of the rotary blade; The axis of the rotary blade and the fixed blade are disposed with a relatively inclined angle, and the cutting edge of the rotary blade and the fixed blade are longitudinally formed by forming the cutting edge of the fixed blade in a curved shape. A shearing device characterized by being used in a pellet manufacturing machine that manufactures pellets by shearing a long pellet material with the clearance in the direction substantially constant. 上記回転刃の切刃が、胴部の軸心と実質的に平行に設けられている請求項1記載のせん断装置。  The shearing device according to claim 1, wherein the cutting blade of the rotary blade is provided substantially in parallel with the axis of the trunk portion. 上記回転刃の切刃が、胴部の略全長にわたって設けられている請求項1または2記載のせん断装置。  The shearing device according to claim 1 or 2, wherein the cutting blade of the rotary blade is provided over substantially the entire length of the body portion.
JP2000023558A 2000-02-01 2000-02-01 Shearing equipment Expired - Lifetime JP3698942B2 (en)

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JP4977348B2 (en) * 2005-09-15 2012-07-18 摂津技研株式会社 Crusher
JP2007204688A (en) * 2006-02-03 2007-08-16 Fujifilm Corp Method for manufacturing pellet aggregate
CN102672747A (en) * 2012-05-03 2012-09-19 郭肖凡 Modified structure of cutter shaft of paper cutter of toilet paper folding machine

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