JP2010125554A - Punching device - Google Patents

Punching device

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Publication number
JP2010125554A
JP2010125554A JP2008302545A JP2008302545A JP2010125554A JP 2010125554 A JP2010125554 A JP 2010125554A JP 2008302545 A JP2008302545 A JP 2008302545A JP 2008302545 A JP2008302545 A JP 2008302545A JP 2010125554 A JP2010125554 A JP 2010125554A
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Japan
Prior art keywords
bearing
punch
punch member
blade
sheet
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JP2008302545A
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JP5249729B2 (en
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Susumu Ishii
進 石井
Kenji Baba
健次 馬場
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Seiko Corp
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Seiko Corp
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Publication of JP2010125554A publication Critical patent/JP2010125554A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a punching device which does not promote abrasion due to invasion of paper powder into a bearing hole during vertical reciprocation of a punch member having a punching blade at a tip part. <P>SOLUTION: A cutting edge end face of the punching blade is structured into a circular shape in cross section and a shape forming wavy irregular parts in the circumferential direction. An upper frame has a bearing member for bearing at least a lower end of a rod shaft and an upper guide face for regulating a front paper face of a sheet to be punched. The bearing member has a sleeve-shaped bearing face for fitting and supporting the rod shaft and a recess-shaped opening which is continuous to the bearing face and whose diameter is larger than a bearing inner diameter. The recess-shaped opening is located at an upper position of the upper guide face downward of the bearing face. The top dead center of the punch member is defined so that the cutting edge end face positioned at the top end is located downward of the bearing face and the cutting edge end face positioned at the bottom end is located upward of the upper guide face. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、例えば複写機、印刷機、プリンタなどの画像形成装置から搬出されるシートにパンチ穴を穿孔する穿孔装置に係わり、穿孔時の騒音を防止する穿孔機構の改良に関する。   The present invention relates to a punching device that punches holes in a sheet conveyed from an image forming apparatus such as a copying machine, a printing machine, and a printer, and relates to an improvement of a punching mechanism that prevents noise during punching.

一般に、紙などのシートにファイリング用のパンチ穴を穿孔する穿孔装置は事務機器として数枚のシートにパンチ部材を手動で押下して穿孔するものと、印刷機、複写機などから搬出されたシートに自動的に穿孔するものが知られている。前者はシートを挟んでフレーム部材に円柱状のパンチ部材を上下動自在に配置し、これを操作レバーで押し下げてシートを貫通させる装置として広く知られている。一方後者は順次搬出されるシートを所定の処理位置にセットし、これにパンチ部材を駆動モータで押下して穴あけする装置として種々の装置に組み込まれて使用されている。そしてこれらの装置ではシートに所定間隔で2個所、3個所若しくは4個所に同時に穿孔処理し、これらの穴数および間隔は統一した規格に設定されている。   Generally, a punching device that punches filing punch holes in a sheet of paper or the like is used as an office machine by manually pressing a punch member on several sheets and punching a sheet from a printing machine, a copier, or the like Those that drill automatically are known. The former is widely known as a device in which a cylindrical punch member is disposed on a frame member so as to be movable up and down with a sheet interposed therebetween, and is pushed down by an operation lever to penetrate the sheet. On the other hand, the latter is used by being incorporated in various devices as a device for setting a sequentially conveyed sheet at a predetermined processing position and pressing a punch member with a driving motor to make a hole. In these apparatuses, the sheet is simultaneously punched at two, three or four places at a predetermined interval, and the number and interval of these holes are set to a unified standard.

そこで従来、画像形成装置から搬出されたシートに自動的に穿孔する装置としては例えば特許文献1に開示されている構造が知られている。同文献にはシートを上部ガイドプレートと下部ガイドプレートとの間を移送するシートにパンチ部材でパンチ孔を穿孔するパンチ構造が開示されている。このため図12に示すように上部ガイドプレート100にロッド形状のパンチ部材101を軸受部材102で上下動可能に支持し、この軸受部材102に支持されたパンチ部材101を駆動モータに連結した駆動回転軸に偏心カム106を設け、このカムでパンチ部材101を上下動させている。また上部ガイドプレート100にシートをセットする間隔を隔てて下部ガイドプレート103を対向配置し、この下部ガイドプレートに刃受孔(ダイ)107を形成している。   Therefore, a structure disclosed in, for example, Patent Document 1 is known as an apparatus for automatically punching a sheet carried out from an image forming apparatus. This document discloses a punch structure in which punch holes are punched by a punch member in a sheet for transferring the sheet between an upper guide plate and a lower guide plate. For this reason, as shown in FIG. 12, a rod-shaped punch member 101 is supported on the upper guide plate 100 by a bearing member 102 so as to be movable up and down, and the punch member 101 supported by the bearing member 102 is connected to a drive motor. An eccentric cam 106 is provided on the shaft, and the punch member 101 is moved up and down by this cam. In addition, a lower guide plate 103 is disposed opposite to the upper guide plate 100 with an interval for setting a sheet, and a blade receiving hole (die) 107 is formed in the lower guide plate.

このような構造で上記偏心カム106はパンチ部材101を上下動する際の上死点は同図に示すように刃先101aが軸受孔内部に没入する位置に設定されている。これはパンチ動作時に刃先に付着した紙片(穿孔屑)を刃先から分離して落下させる為である。
特開2003−170394号公報(図2)
With such a structure, the eccentric cam 106 is set such that the top dead center when the punch member 101 is moved up and down is at a position where the blade edge 101a is immersed in the bearing hole as shown in FIG. This is because a piece of paper (perforated waste) adhering to the blade edge during the punching operation is separated from the blade edge and dropped.
Japanese Patent Laid-Open No. 2003-170394 (FIG. 2)

上述のようにパンチ部材を所定ストロークで上下動させてシート類に穿孔する場合、従来は先端に穿孔刃を有するパンチ部材のロッド軸部を軸受部材で上下動可能に支持している。このとき従来は上部フレームにスリーブ状の軸受孔を有する軸受部材を取付け、この軸受に沿ってパンチ部材が上下動するように構成している。   As described above, when punching a sheet by moving the punch member up and down with a predetermined stroke, conventionally, the rod shaft portion of the punch member having a punching blade at the tip is supported by the bearing member so as to be vertically movable. Conventionally, a bearing member having a sleeve-like bearing hole is attached to the upper frame, and the punch member is configured to move up and down along the bearing.

このような軸受構造で、従来はパンチ部材の刃先端縁が軸受孔内に没入するポジションを上死点に設定している。このように刃先端縁を完全に軸受孔内に没入させることによって刃先に付着した紙片(穿孔屑)を軸受孔の下端縁で掻き落とすように作用させている。   With such a bearing structure, the position where the blade tip edge of the punch member is immersed in the bearing hole is conventionally set as the top dead center. In this way, the blade tip edge is completely immersed in the bearing hole, so that the piece of paper (perforated scraps) adhering to the blade tip is scraped off at the lower end edge of the bearing hole.

ところがパンチ刃の刃先端縁を軸受孔の内部と外部との間で往復動させると当然に紙粉が軸受け内部に進入する。この紙粉の影響で軸受孔内部の摩耗が進化し、耐久性を劣らせる原因となっている。   However, when the blade tip edge of the punch blade is reciprocated between the inside and the outside of the bearing hole, the paper dust naturally enters the inside of the bearing. Due to the influence of this paper dust, the wear inside the bearing hole has evolved, causing inferior durability.

上述の紙粉による軸受係合部の摩耗は、特にパンチ部材をラジアル方向に回転させながらスラスト方向に上下動する穿孔機構を採用すると軸受孔ないに進入した紙粉はスパイラル状に旋回しながら内部に進入することとなり、この旋回運動による摩耗は著しい劣化をもたらす。   The wear of the bearing engaging portion due to the paper dust described above is caused by the paper dust entering the bearing hole being swirled in a spiral shape, especially when a punching mechanism that moves up and down in the thrust direction while rotating the punch member in the radial direction is used. The wear due to the swivel movement causes a significant deterioration.

そこで本発明者は、穿孔時に刃先に付着した紙粉その他の塵埃が軸受孔内部に進入しないように穿孔刃の上死点位置を設定し、同時にパンチ部材に付着して軸受孔内部に進入する紙粉を掻き落とす紙粉の落下空間を形成するとの着想に至った。   Therefore, the present inventor sets the top dead center position of the drilling blade so that paper dust and other dust adhering to the blade edge does not enter the bearing hole during drilling, and simultaneously adheres to the punch member and enters the bearing hole. It came to the idea of forming a space for paper dust to scrape off the paper dust.

本発明は先端に穿孔刃を有するパンチ部材を上下往復動する際に、軸受孔内に紙粉が進入して摩耗を促進することのない穿孔装置の提供をその課題としている。   An object of the present invention is to provide a perforating apparatus in which paper dust does not enter a bearing hole and promote wear when a punch member having a perforating blade at the tip is reciprocated up and down.

上記課題を解決するため本発明は以下の構成を採用する。ロッド軸の先端に穿孔刃を有するパンチ部材と、上記穿孔刃に適合する刃受孔と、上記ロッド軸を穿孔方向に往復動可能に支持する上部フレームと、上記刃受孔を備え上記上部フレームとの間に被穿孔シートのセット間隙を形成して対向配置された下部フレームと、上記パンチ部材を上死点と下死点との間で往復動する駆動手段とを備える。上記穿孔刃の刃先端面は、断面円形状で、円周方向に波状の凹凸部を形成する形状に構成し、上記上部フレームには、上記ロッド軸の少なくとも下端部を軸受け支持する軸受部材と、被穿孔シートの上紙面を規制する上ガイド面とを設け、上記軸受部材は、上記ロッド軸を嵌合支持するスリーブ形状の軸受面と、この軸受面に連なり軸受内径より大径の凹陥状開口部と、を設ける。上記凹陥状開口部は上記軸受面の下方で上記上ガイド面の上方位置に配置し、上記パンチ部材の上死点は、最上端に位置する刃先端面が上記軸受面より下方に位置し、最下端に位置する刃先端面が上記上ガイド面より上方に位置するように設定する。   In order to solve the above problems, the present invention employs the following configuration. A punch member having a piercing blade at the tip of the rod shaft, a blade receiving hole adapted to the piercing blade, an upper frame that supports the rod shaft so as to reciprocate in the piercing direction, and the upper frame provided with the blade receiving hole. And a lower frame disposed opposite to each other so as to form a set gap for the perforated sheet, and driving means for reciprocating the punch member between a top dead center and a bottom dead center. The blade tip surface of the drilling blade has a circular cross section, and is formed in a shape that forms a wavy uneven portion in the circumferential direction, and the upper frame has a bearing member that supports and supports at least the lower end of the rod shaft, An upper guide surface that regulates the upper sheet surface of the perforated sheet, and the bearing member includes a sleeve-shaped bearing surface that fits and supports the rod shaft, and a recessed opening that is continuous with the bearing surface and has a diameter larger than the bearing inner diameter. And a portion. The recessed opening is disposed below the bearing surface and above the upper guide surface. The top dead center of the punch member is such that the blade tip surface located at the uppermost end is located below the bearing surface and The blade tip surface positioned at the lower end is set so as to be positioned above the upper guide surface.

前記スリーブ形状の軸受面と前記凹陥状開口部とは、前記穿孔刃に付着した紙粉を軸受面の下端エッジで掻き落として凹陥状開口部から落下させるように連結する。   The sleeve-shaped bearing surface and the recessed opening are connected so that paper dust attached to the perforating blade is scraped off at the lower edge of the bearing surface and dropped from the recessed opening.

前記上ガイド面は、穿孔不能シートの穿孔処理部が前記パンチ部材に追随して前記凹陥状開口部に没入しないように該凹陥状開口部の下方に配置する。   The upper guide surface is disposed below the recessed opening so that a punching processing portion of the non-piercing sheet follows the punch member and does not enter the recessed opening.

前記駆動手段は、前記パンチ部材に穿孔方向のスラスト力と、穿孔方向と直交するラジアル方向の回転力を伝達し、前記パンチ部材はラジアル方向に回転しながらスラスト方向に往復動してシートに穿孔する。   The driving means transmits a thrust force in a punching direction and a radial rotational force orthogonal to the punching direction to the punch member, and the punch member reciprocates in the thrust direction while rotating in the radial direction to punch a sheet. To do.

前記駆動手段は、駆動モータと、上記駆動モータの回転を前記パンチ部材の回転運動に伝達する伝動手段と、このパンチ部材の回転運動を穿孔方向運動に変換するカム手段と、から構成し、前記パンチ部材は被穿孔シートに回転しながら穿孔する。   The drive means comprises a drive motor, transmission means for transmitting the rotation of the drive motor to the rotary motion of the punch member, and cam means for converting the rotary motion of the punch member into a punching direction motion, The punch member is perforated while rotating on the perforated sheet.

本発明は、先端に穿孔刃を有するパンチ部材を軸受部材で上下動可能に支持する際に、この軸受孔の下側に軸受内径より大径の凹陥状開口部を形成し、パンチ部材の上死点を最上端に位置する刃先端が軸受面より下方に位置し、最下端に位置する刃先端が被穿孔シートの上紙面を規制する上ガイド面より上方に位置するように設定したものであるから、次の効果を奏する。   In the present invention, when a punch member having a perforated blade at the tip is supported by the bearing member so as to be movable up and down, a recessed opening having a diameter larger than the bearing inner diameter is formed below the bearing hole, It is set so that the blade tip located at the top end of the dead center is located below the bearing surface, and the blade tip located at the bottom end is located above the upper guide surface that regulates the upper surface of the perforated sheet. Because of this, it has the following effects.

パンチ部材とこれを支持する軸受部材とは上死点位置で刃先端縁が軸受孔内部に進入することがないから、従来は穿孔時に刃先端縁に付着した紙粉が軸受孔内部に導かれることがない。   Since the punch member and the bearing member supporting the punch member do not enter the inside of the bearing hole at the top dead center position, conventionally, paper dust adhered to the edge of the blade at the time of drilling is guided into the bearing hole. There is nothing.

またパンチ部材に静電気等の影響で付着した紙粉は軸受孔の下端縁(孔エッジ部)とこれに連続する凹陥状開口部によって掻き落とされる。またこの凹陥状開口部は被穿孔シートの上紙面を規制する上ガイド面の上方に配置されているから穿孔不能となったシートはこの上ガイド面で規制され開口部に押し込まれることがない。これによって穿孔不能に原因するシートジャムを逓減させることができる。   Further, the paper dust adhering to the punch member due to the influence of static electricity or the like is scraped off by the lower end edge (hole edge portion) of the bearing hole and the concave opening portion continuous therewith. Further, since the recessed opening is disposed above the upper guide surface that regulates the upper sheet surface of the sheet to be punched, the sheet that cannot be punched is restricted by the upper guide surface and is not pushed into the opening. As a result, the sheet jam caused by the inability to perforate can be gradually reduced.

以下図示の好適な実施の形態に基づいて本発明を詳述する。図1は本発明に係わる穿孔装置の全体構成を示す説明図であり、図2はその要部の断面図である。図3(a)はパンチ部材の軸受支持部の構造説明図であり、同図(b)はその一部を拡大した説明図である。   The present invention will be described in detail below based on the preferred embodiments shown in the drawings. FIG. 1 is an explanatory view showing the entire configuration of a perforating apparatus according to the present invention, and FIG. FIG. 3A is a structural explanatory view of the bearing support portion of the punch member, and FIG. 3B is an enlarged explanatory view of a part thereof.

[穿孔装置]
まず本発明に係わる穿孔装置Aの全体構成について説明する。図1に示すように穿孔装置Aは、被穿孔シートSをセットする下部フレーム(刃受孔プレート)35と、この下部フレーム35との間に少許の間隙Sdを形成して配置された上部フレーム(ベースフレーム)30と、この上部フレーム30に取り付けられたパンチ部材40と、下部フレーム35に設けられた刃受孔(ダイ;以下同様)38と、から構成されている。そしてこの上部フレーム30にはパンチ部材40を上下方向(穿孔方向)に昇降する駆動手段(後述の駆動モータM)と、この駆動モータMの駆動をパンチ部材40に伝達する伝動部材(後述のラック歯車51)と、伝動部材51の運動をパンチ部材40の穿孔運動に変換するカム手段(後述の円筒カム44)とから構成されている。各構成について詳述する。
[Punching device]
First, the overall configuration of the punching apparatus A according to the present invention will be described. As shown in FIG. 1, the punching apparatus A includes a lower frame (blade receiving hole plate) 35 for setting the perforated sheet S and an upper frame disposed with a small gap Sd between the lower frame 35. (Base frame) 30, a punch member 40 attached to the upper frame 30, and a blade receiving hole (die; hereinafter the same) 38 provided in the lower frame 35. The upper frame 30 has a driving means (a driving motor M described later) for moving the punch member 40 up and down (perforating direction), and a transmission member (a rack described later) for transmitting the driving of the driving motor M to the punch member 40. The gear 51) and cam means (cylindrical cam 44 described later) for converting the movement of the transmission member 51 into the drilling movement of the punch member 40. Each configuration will be described in detail.

上記上部フレーム30と下部フレーム35は被穿孔シートSの幅サイズに応じた長さ寸法に形成され、下部フレーム上に搬送されるシートに上部フレーム30に設けられたパンチ部材40で所定数のパンチ穴を形成する。この為、上記パンチ部材40は通常の円柱形状に構成され、その先端に穿孔刃41が設けてある。このパンチ部材40は上部フレーム30に所定の規格(ファイル穴規格)に応じた間隔で、2穴、3穴、4穴など装置仕様に応じて複数配置される。図示のものは4個所に第1パンチ部材40a、第2パンチ部材40b、第3パンチ部材40c、第4パンチ部材40dが配置され、シートに2穴、4穴のパンチ穴を選択的に穿孔するようになっている。   The upper frame 30 and the lower frame 35 are formed in a length according to the width size of the perforated sheet S, and a predetermined number of punches are formed by punch members 40 provided on the upper frame 30 on the sheet conveyed on the lower frame. Create a hole. For this reason, the punch member 40 is formed in an ordinary cylindrical shape, and a perforating blade 41 is provided at the tip thereof. A plurality of punch members 40 are arranged on the upper frame 30 at intervals according to a predetermined standard (file hole standard) according to the apparatus specifications such as 2 holes, 3 holes, 4 holes, and the like. In the illustrated example, the first punch member 40a, the second punch member 40b, the third punch member 40c, and the fourth punch member 40d are arranged at four locations, and two holes and four punch holes are selectively punched in the sheet. It is like that.

[パンチ部材の構成]
上記各パンチ部材40a〜40dは、同一構造で構成されているので以下その1つについて図2乃至図5に基づいて説明する。図2に示すようにパンチ部材40は、ロッド軸(以下「パンチ軸」という)42と、その先端に設けられた穿孔刃41で構成されている。このパンチ軸42は穿孔方向(図2(a)上下方向)に所定長さの棒状部材で構成され、図示のパンチ軸42には受動歯車46と円筒カム(カム手段;以下同様)44が一体的に取付けられている。この受動歯車46及び円筒カム44については後述する。そこでこのパンチ部材40の穿孔刃41の形状(刃先形状)と、軸受支持構造について説明する。
[Configuration of punch member]
Since each of the punch members 40a to 40d has the same structure, one of them will be described below with reference to FIGS. As shown in FIG. 2, the punch member 40 includes a rod shaft (hereinafter referred to as “punch shaft”) 42 and a punching blade 41 provided at the tip thereof. The punch shaft 42 is composed of a rod-shaped member having a predetermined length in the perforating direction (the vertical direction in FIG. 2A). The punch shaft 42 shown in the figure is integrated with a passive gear 46 and a cylindrical cam (cam means; hereinafter the same) 44. Installed. The passive gear 46 and the cylindrical cam 44 will be described later. Therefore, the shape (blade shape) of the punching blade 41 of the punch member 40 and the bearing support structure will be described.

穿孔刃41の刃先端面は図4(a)に示すような外径d1の円環形状に形成されている。そして円周方向に波状の凹凸部を形成する形状で構成されている。この凹凸形状を同図(b)及び(c)に示す。同図(a)のように断面円環形状の穿孔刃41は、同図(b)のように山形状部41x1,41x2と谷形状部41y1,41y2に凹凸端面が形成されている。そして同図(a)に示す0度、90度、180度、270度の端面形状を展開すると同図(c)のように波形形状となる。このように円周方向に凹凸面を形成したのは穿孔負荷を軽減する為である。特に図示の刃先形状は山形状部41x1と41x2との間に位相差(段差)αを形成している。これは山形状部を2個所以上に形成する場合に41x1と41x2との間に段差αを形成して穿孔負荷を更に軽減している。谷形状部についても同様に41y1と41y2との間に位相差(段差)αが形成してある(図4(b)(c)参照)。   The blade tip surface of the drilling blade 41 is formed in an annular shape having an outer diameter d1 as shown in FIG. And it is comprised in the shape which forms a wavy uneven | corrugated | grooved part in the circumferential direction. This uneven shape is shown in FIGS. As shown in FIG. 6A, the perforated blade 41 having an annular cross section has concavo-convex end faces formed in the mountain-shaped portions 41x1 and 41x2 and the valley-shaped portions 41y1 and 41y2 as shown in FIG. When the end face shapes of 0 degrees, 90 degrees, 180 degrees, and 270 degrees shown in FIG. 10A are developed, a waveform is obtained as shown in FIG. The uneven surface is formed in the circumferential direction in this way in order to reduce the perforation load. In particular, the illustrated cutting edge shape forms a phase difference (step) α between the mountain-shaped portions 41x1 and 41x2. This is to further reduce the perforation load by forming a step α between 41 × 1 and 41 × 2 when two or more mountain-shaped portions are formed. Similarly, the valley-shaped portion has a phase difference (step) α between 41y1 and 41y2 (see FIGS. 4B and 4C).

次にパンチ部材40の軸受構造について説明する。パンチ部材40はパンチ軸42を上部フレーム30に軸受け支持され、図2(a)上下方向に所定ストロークStで往復動する。このため前述の上部フレーム30は図2(a)に示すように断面コ字状のチャンネル部材で構成され、上下に対向する上ガイド31と下ガイド32に摺動自在に軸受け支持されている。   Next, the bearing structure of the punch member 40 will be described. The punch member 40 has a punch shaft 42 supported by the upper frame 30 and reciprocates at a predetermined stroke St in the vertical direction of FIG. For this reason, the above-described upper frame 30 is constituted by a channel member having a U-shaped cross section as shown in FIG. 2A, and is slidably supported by an upper guide 31 and a lower guide 32 opposed vertically.

図示の軸受構造は上ガイド31に嵌合孔31aが形成してあり、この嵌合孔31aにロッド軸上部42aが嵌合され、ロッド軸42は上下動可能に支持されている。このロッド軸42は少なくともそのロッド軸下部(下端部)42bが軸受部材60に支持されている。この軸受部材60について説明すると、図3(a)(b)に拡大断面図を示すように、軸受部材60は軸受面60aを有するスリーブ状軸受孔60bが形成されている。この軸受面60aの内径は穿孔刃41の外径d1と実質的に等しい径に構成されている。   In the illustrated bearing structure, a fitting hole 31a is formed in the upper guide 31, and a rod shaft upper portion 42a is fitted into the fitting hole 31a, and the rod shaft 42 is supported so as to be movable up and down. The rod shaft 42 is supported by the bearing member 60 at least at the rod shaft lower portion (lower end portion) 42b. The bearing member 60 will be described. As shown in enlarged sectional views in FIGS. 3A and 3B, the bearing member 60 has a sleeve-like bearing hole 60b having a bearing surface 60a. The inner diameter of the bearing surface 60a is configured to be substantially equal to the outer diameter d1 of the drilling blade 41.

軸受部材60は例えば焼結金属で構成され、場合に応じて潤滑油を含浸し、その軸受長さ(スラスト方向長さ)はパンチ軸42が傾斜しない嵌合条件に設定されている。そしてこの軸受面60aの下端エッジ60eは穿孔刃41の外周面に緊密に嵌合するように形成されている。そこで軸受孔内にパンチ部材40を嵌合して上下動すると穿孔刃41の外周面に付着した異物は下端エッジ60eで掻き落とされるように配慮されている。   The bearing member 60 is made of, for example, sintered metal, impregnated with lubricating oil according to circumstances, and the bearing length (thrust direction length) is set to a fitting condition in which the punch shaft 42 is not inclined. The lower end edge 60e of the bearing surface 60a is formed so as to be tightly fitted to the outer peripheral surface of the drilling blade 41. Therefore, when the punch member 40 is fitted in the bearing hole and moved up and down, the foreign matter adhering to the outer peripheral surface of the drilling blade 41 is considered to be scraped off by the lower end edge 60e.

上記の様に構成されたスリーブ状の軸受面60aの下端部には形状的に連続して凹陥状開口部61が形成してある。つまりスリーブ状の軸受面60aの下端部には段差を形成して軸受内径d1′より大径の凹陥状開口部61が設けてある。この凹陥状開口部61の内径d2は軸受内径d1′より大きく(d2>d1)設定してある。従って穿孔刃41の外周に付着した紙粉などの異物は軸受面60aの下端エッジ60eで掻き剥され、凹陥状開口部61から落下し、軸受面60a内に進入することがない。   A concave opening 61 is formed continuously at the lower end of the sleeve-shaped bearing surface 60a configured as described above. That is, the lower end of the sleeve-like bearing surface 60a is provided with a stepped opening 61 having a larger diameter than the bearing inner diameter d1 ′. The inner diameter d2 of the recessed opening 61 is set larger than the bearing inner diameter d1 ′ (d2> d1). Accordingly, foreign matters such as paper dust adhering to the outer periphery of the punching blade 41 are scraped off by the lower end edge 60e of the bearing surface 60a, and fall from the recessed opening 61 and do not enter the bearing surface 60a.

そこで本発明は後述する駆動手段(駆動モータM、ラック歯車51、円筒カム44)で軸受面60aに支持されたパンチ部材40を上死点puと下死点pdとの間で、ストロークStで往復動する。このとき上死点puと下死点pdを次のように設定してある。まず上死点puは図3(b)に示すように穿孔刃41の最上端に位置する刃先端面(図3(b)の形態では谷形状部)41y1(41y2)が軸受面60aより下方に位置するように設定する。図示の例では軸受面60aより距離t1だけ下側に刃先端面41y1(41y2)が位置するようになっている。また最下端に位置する刃先端面(図3(b)の形態では山形状部)41x1(41x2)は図3(b)に示す上ガイド面62より上方に位置するように設定されている。図示の例では上ガイド面62より距離t2だけ上側に刃先端面41x1(41x2)が位置するように設定されている。   Therefore, in the present invention, the punch member 40 supported on the bearing surface 60a by the driving means (the driving motor M, the rack gear 51, and the cylindrical cam 44) to be described later is moved between the top dead center pu and the bottom dead center pd at a stroke St. Reciprocates. At this time, the top dead center pu and the bottom dead center pd are set as follows. First, as shown in FIG. 3 (b), the top dead center pu has a blade tip surface (valley-shaped portion in the form of FIG. 3 (b)) 41y1 (41y2) positioned at the uppermost end of the drilling blade 41 below the bearing surface 60a. Set to position. In the illustrated example, the blade tip surface 41y1 (41y2) is positioned below the bearing surface 60a by a distance t1. Further, the blade tip surface (the mountain-shaped portion in the form of FIG. 3B) 41x1 (41x2) positioned at the lowermost end is set to be positioned above the upper guide surface 62 shown in FIG. 3B. In the illustrated example, the blade tip surface 41x1 (41x2) is set to be positioned above the upper guide surface 62 by a distance t2.

尚、上ガイド面62は被穿孔シートSの上面を規制(ガイド)するように軸受部材60又は上部フレーム30に設けられている。図示のものは軸受部材60に上ガイド面62を配置する場合を示す。   The upper guide surface 62 is provided on the bearing member 60 or the upper frame 30 so as to regulate (guide) the upper surface of the perforated sheet S. The illustrated one shows a case where the upper guide surface 62 is disposed on the bearing member 60.

上述のように構成されたパンチ部材40の穿孔動作を図6及び図7に基づいて説明する。図6(a)はパンチ部材40が上死点puに位置する状態を示している。この状態で穿孔刃41はシートの搬送経路(上部フレーム30と下部フレーム35の間)から上方に待機し、搬送経路にシートを給排送可能となる。図6(b)はパンチ部材40がシートを穿孔する状態を示し、穿孔刃41は上死点puから下死点pdに移動する途中の状態である。このとき穿孔刃41は図示矢示方向に回転しながら下死点側に下降する。図7(c)はパンチ部材40が下死点pdに位置する状態を示し、シートには穿孔が施されている。このとき穿孔刃41の刃先には屑紙片66が付着している場合がある。そこで図7(d)はパンチ部材40が下死点pdから上死点puに移行する途中の状態を示し、穿孔が施されたシートが上ガイド面62でパンチ部材40から分離され、穿孔刃41は先と反対方向に回転(図示矢示方向)しながら上死点方向に上昇する。このとき刃先に付着した屑紙片66はパンチ部材の回転方向の反転による衝撃で確実に振り落とされる。また穿孔刃41の外周に付着した紙粉66zは下端エッジ60eで掻き剥がされ、凹陥状開口部61から落下される。従って紙粉66zが軸受面60a内部に侵入することが少ない。   A punching operation of the punch member 40 configured as described above will be described with reference to FIGS. FIG. 6A shows a state where the punch member 40 is located at the top dead center pu. In this state, the punching blade 41 waits upward from the sheet conveyance path (between the upper frame 30 and the lower frame 35) and can feed and discharge the sheet to and from the conveyance path. FIG. 6B shows a state in which the punch member 40 punches the sheet, and the punching blade 41 is in the middle of moving from the top dead center pu to the bottom dead center pd. At this time, the drilling blade 41 descends toward the bottom dead center while rotating in the direction indicated by the arrow. FIG. 7C shows a state where the punch member 40 is located at the bottom dead center pd, and the sheet is perforated. At this time, the scrap paper piece 66 may adhere to the cutting edge of the punching blade 41. FIG. 7D shows a state in which the punch member 40 is in the process of moving from the bottom dead center pd to the top dead center pu. The punched sheet is separated from the punch member 40 by the upper guide surface 62, and the punching blade 41 rises in the direction of the top dead center while rotating in the direction opposite to the previous direction (indicated by the arrow in the figure). At this time, the scrap paper piece 66 adhering to the blade edge is reliably shaken off by an impact caused by reversal of the rotation direction of the punch member. Further, the paper dust 66z adhering to the outer periphery of the punching blade 41 is scraped off by the lower end edge 60e and dropped from the recessed opening 61. Accordingly, the paper dust 66z hardly enters the bearing surface 60a.

上記パンチ部材40の駆動手段について説明する。上記パンチ軸42は、炭素鋼などの金属材料で円筒軸形状に形成され、円筒カム44と受動歯車46が一体に形成されている。この円筒カム44にはその外周に逆V字形状のカム溝45が形成され、後述するカムピン33cと嵌合する。この円筒カム44は図2(b)に示すように、上カム部材44Aと下カム部材44Bに上下分割して構成され、上カム部材44Aには上カム面45aが、下カム部材44Bには下カム面45bが形成されている。そしてこの上カム面45aと下カム面45bとで逆V字状のカム溝45が形成されている。   The driving means for the punch member 40 will be described. The punch shaft 42 is formed of a metal material such as carbon steel into a cylindrical shaft shape, and a cylindrical cam 44 and a passive gear 46 are integrally formed. The cylindrical cam 44 is formed with an inverted V-shaped cam groove 45 on the outer periphery thereof, and is fitted to a cam pin 33c described later. As shown in FIG. 2B, the cylindrical cam 44 is divided into an upper cam member 44A and a lower cam member 44B. The upper cam member 44A has an upper cam surface 45a, and the lower cam member 44B has a lower cam member 44B. A lower cam surface 45b is formed. The upper cam surface 45a and the lower cam surface 45b form an inverted V-shaped cam groove 45.

このように逆V字形状のカム溝45を形成する上下カム部材44A、44Bを上下分割形成したのはカム溝45を形成する上カム面45aと下カム面45bのいずれか一方を軸方向(図2上下方向)に移動可能にするためである。このように分割形成された上下カム部材44A、44Bはパンチ軸42に嵌合することによって逆V字形状のカム溝45を次のように形成している。図2(b)に示すように下カム部材44Bは中央に中空孔44bxが形成され、この中空孔44bxにパンチ軸42が貫挿され、回転止めピン44byで両者が一体的に結合されている。   As described above, the upper and lower cam members 44A and 44B that form the inverted V-shaped cam groove 45 are divided into upper and lower parts in the axial direction on either the upper cam surface 45a or the lower cam surface 45b that forms the cam groove 45 ( This is to enable movement in the vertical direction of FIG. The upper and lower cam members 44A and 44B divided and formed in this way are fitted to the punch shaft 42 to form an inverted V-shaped cam groove 45 as follows. As shown in FIG. 2B, the lower cam member 44B has a hollow hole 44bx formed in the center, the punch shaft 42 is inserted into the hollow hole 44bx, and both are integrally coupled by a rotation stop pin 44by. .

一方、上カム部材44Aにも中空孔44axが設けられ、この中空孔44axにパンチ軸42が貫挿されている。この上カム部材44Aはパンチ軸42に沿って上下動自在に嵌合されている。つまり図2(b)に示すように下カム部材44Bには嵌合凹溝44buが設けられ、この嵌合凹溝44buに上カム部材44Aの嵌合凸部44auが嵌合されている。従って上カム部材44Aと下カム部材44Bはパンチ軸42に嵌合され、その一方(図示のものは下カム部材44B)がパンチ軸42に一体的に固定され、他方(図示のものは上カム部材44A)がパンチ軸42に沿って上下動自在に嵌合支持されている。   On the other hand, the upper cam member 44A is also provided with a hollow hole 44ax, and the punch shaft 42 is inserted through the hollow hole 44ax. The upper cam member 44A is fitted along the punch shaft 42 so as to be movable up and down. That is, as shown in FIG. 2B, the lower cam member 44B is provided with a fitting groove 44bu, and the fitting protrusion 44au of the upper cam member 44A is fitted into the fitting groove 44bu. Accordingly, the upper cam member 44A and the lower cam member 44B are fitted to the punch shaft 42, and one of them (the illustrated lower cam member 44B) is integrally fixed to the punch shaft 42, and the other (the illustrated one is the upper cam). A member 44A) is fitted and supported so as to be movable up and down along the punch shaft.

上記上カム部材44Aには上記パンチ軸42に沿って常時下方に付勢するバネ手段47が設けられている。図示のバネ手段47は円盤形状の板バネで形成され、その中央にはパンチ軸42を貫挿する中孔が形成されている。この板バネ47はパンチ軸42に貫挿され、このパンチ軸42にワッシャ48aを介してEリング48bで固定されている。そして板バネ47の下面は上記上カム部材44Aの上端面44azを常時下方に押圧付勢している。   The upper cam member 44A is provided with a spring means 47 that constantly urges downward along the punch shaft. The illustrated spring means 47 is formed of a disk-shaped plate spring, and an intermediate hole through which the punch shaft 42 is inserted is formed at the center thereof. The leaf spring 47 is inserted into the punch shaft 42 and fixed to the punch shaft 42 with an E ring 48b through a washer 48a. The lower surface of the leaf spring 47 always presses and urges the upper end surface 44az of the upper cam member 44A downward.

上述の円筒カム44には後述する駆動モータMから回転力が付与され、その回転運動を上記カム溝45で穿孔方向に運動変換するように構成されている。このため上記下カム部材44Bの外周にはカム溝45と異なる位置に受動歯車46が一体形成されている。この受動歯車46には後述するラック歯車(伝動部材)51が歯合され、このラック歯車51が駆動モータMで往復動してパンチ部材40を上下動するように構成されている(駆動機構については後述する)。   A rotational force is applied to the above-described cylindrical cam 44 from a drive motor M, which will be described later, and the rotational motion is converted in the perforating direction by the cam groove 45. Therefore, a passive gear 46 is integrally formed on the outer periphery of the lower cam member 44B at a position different from the cam groove 45. A rack gear (transmission member) 51, which will be described later, is meshed with the passive gear 46, and the rack gear 51 is reciprocated by the drive motor M to move the punch member 40 up and down (about the drive mechanism). Will be described later).

次に上述のカム溝45のカム形状について図5に従って説明する。穿孔装置Aは、パンチ部材40を2孔穴開け用の第1パンチ部材40a,第4パンチ部材40dと、更に4孔穴開け用の第2パンチ部材40b,第3パンチ部材40cの合計4つのパンチ部材で構成する場合を示している。そこで各パンチ部材40a〜40dの円筒カム44には穿孔方向に(図5(a)上下方向)に対し所定角度(θ)傾斜した傾斜カム面45θが設けられ、第1,第4カム溝45ak、45dkには1個所、第2,第3カム溝45bk、45ckには2個所に傾斜カム面45θが形成されている(図3(b)参照)。そして第1,第4カム溝45ak、45dkの傾斜カム面45θと第2,第3カム溝45bk、45ckの1つの傾斜カム面45θはそれぞれ円筒カム44の同一角度位置(第1角度位置)に配置され、この第1角度位置で被穿孔シートSに4孔開けする。また円筒カム44の第2角度位置で被穿孔シートSに2孔開けするように構成されている。   Next, the cam shape of the cam groove 45 will be described with reference to FIG. The punching device A includes a total of four punch members, ie, a first punch member 40a and a fourth punch member 40d for punching the two holes, and a second punch member 40b and a third punch member 40c for further punching the four holes. The case where it comprises is shown. Therefore, the cylindrical cam 44 of each punch member 40a to 40d is provided with an inclined cam surface 45θ inclined by a predetermined angle (θ) with respect to the drilling direction (vertical direction in FIG. 5A), and the first and fourth cam grooves 45ak. , 45dk and the second and third cam grooves 45bk, 45ck have two inclined cam surfaces 45θ (see FIG. 3B). The inclined cam surfaces 45θ of the first and fourth cam grooves 45ak and 45dk and one inclined cam surface 45θ of the second and third cam grooves 45bk and 45ck are respectively at the same angular position (first angular position) of the cylindrical cam 44. 4 holes are formed in the perforated sheet S at the first angular position. The cylindrical cam 44 is configured to make two holes in the perforated sheet S at the second angular position.

この第2角度位置では第1,第4カム溝45ak、45dkは円筒カム44の外周方向に水平な直線溝で形成されている。従って上部フレーム30に固定されたカムピン33cと係合している第1乃至第4カム溝45ak〜45dkは上記第1角度位置では第1乃至第4パンチ部材40a〜40dが被穿孔シートSに4穴穿孔し、上記第2角度位置では第2、第3パンチ部材40b、40cが被穿孔シートSに2穴穿孔することとなる。   At the second angular position, the first and fourth cam grooves 45ak and 45dk are formed as linear grooves that are horizontal in the outer circumferential direction of the cylindrical cam 44. Accordingly, the first to fourth cam grooves 45ak to 45dk engaged with the cam pins 33c fixed to the upper frame 30 are arranged so that the first to fourth punch members 40a to 40d are formed on the punched sheet S at the first angular position. Holes are punched, and the second and third punch members 40b and 40c punch two holes in the punched sheet S at the second angular position.

また第2,第3カム溝45bk、45ckの他の傾斜カム面45θは円筒カム44の上記第1角度位置と異なる角度位置(第2角度位置)で同一角度位置に形成され、この第2角度位置ではシートに2孔開けする。   Further, the other inclined cam surfaces 45θ of the second and third cam grooves 45bk, 45ck are formed at the same angular position at an angular position (second angular position) different from the first angular position of the cylindrical cam 44. At the position, two holes are made in the sheet.

また上記各円筒カム44は所定角度ずつ位相差を有するように上部フレーム30に取り付けられ、同時孔開けする際に各パンチ部材40a〜40dの孔開けタイミングを異ならせている。つまり図1に示すように4孔開けの時、各パンチ部材40a〜40dは、第1パンチ部材40a、第2パンチ部材40b、第3パンチ部材40c、第4パンチ部材40dの順に時間差(カム溝の変移差)を持って孔開けタイミングをズラしている。2孔開けの時も同様に第2パンチ部材40b、第3パンチ部材40cの順に位相差を持たせている。   The cylindrical cams 44 are attached to the upper frame 30 so as to have a phase difference by a predetermined angle, and the punching timings of the punch members 40a to 40d are made different when simultaneously punching. That is, as shown in FIG. 1, when four holes are formed, each punch member 40a to 40d has a time difference (cam groove) in the order of the first punch member 40a, the second punch member 40b, the third punch member 40c, and the fourth punch member 40d. The timing of drilling is shifted with the difference of the deviation. Similarly, when the two holes are formed, the second punch member 40b and the third punch member 40c are provided with a phase difference in this order.

[円筒カムの作用]
上述のように構成されている円筒カム(カム手段)44は、逆V字形状のカム溝45を構成する上カム面45aと下カム面45bのいずれか一方が穿孔方向に少許のスパンで上下動自在に構成され、その可動側カム面(上述の上カム面45a)にバネ手段47が設けられている。そしてこの上カム面45aと下カム面45bとの間にカムピン33cを嵌合し、このカムピン33cを上部フレーム30に固定する。
[Operation of cylindrical cam]
The cylindrical cam (cam means) 44 configured as described above is configured so that one of the upper cam surface 45a and the lower cam surface 45b constituting the inverted V-shaped cam groove 45 moves vertically with a small span in the drilling direction. The spring means 47 is provided on the movable cam surface (the above-described upper cam surface 45a). A cam pin 33c is fitted between the upper cam surface 45a and the lower cam surface 45b, and the cam pin 33c is fixed to the upper frame 30.

そこで下カム部材44Bに形成した受動歯車46に回転力をラック歯車51で付与する。例えばラック歯車51が図1左側に移動するとき、パンチ部材40は同図反時計方向に回転する。このとき図8(a)に示す上死点puから下死点側に変位する位置p1でカムピン33cがカム溝45の下カム面45bに当接する(図8(b)の状態)。その後、カムピン33cは下カム面45bに沿って上カム面45aに案内されて下死点方向に移動(図8(c)、図9(d)の状態)する。そして下死点pd(図9(e)の状態)に到達し、この下死点pdから若干オーバランして停止位置p3(図9(f)の状態)で停止する。   Therefore, the rack gear 51 applies a rotational force to the passive gear 46 formed on the lower cam member 44B. For example, when the rack gear 51 moves to the left in FIG. 1, the punch member 40 rotates counterclockwise. At this time, the cam pin 33c comes into contact with the lower cam surface 45b of the cam groove 45 at a position p1 displaced from the top dead center pu to the bottom dead center side shown in FIG. 8A (state shown in FIG. 8B). Thereafter, the cam pin 33c is guided by the upper cam surface 45a along the lower cam surface 45b and moves in the direction of the bottom dead center (the state shown in FIGS. 8C and 9D). Then, it reaches the bottom dead center pd (the state shown in FIG. 9E), slightly overruns from the bottom dead center pd, and stops at the stop position p3 (the state shown in FIG. 9F).

上述の動作でシートに穿孔した後は、前記駆動モータMを逆回転させてラック歯車51を図1右側に移動(復帰動)する。するとパンチ部材40は、停止位置p3から下死点pdに戻り、次いで上死点側に図示p2位置、p1位置、そして上死点puに戻ることとなる。このときパンチ部材40は最初に下死点側に降下した後、方向を反転して上死点側に上昇移動することとなる。このときパンチ部材40には下死点方向の運動から上死点方向の運動に反転する方向変換の負荷と、穿孔刃41の刃先を穿孔済シートから引き剥がす負荷が作用する。ところが本発明のパンチ部材40には前述の板バネ47が作用しているため、バネ力が上カム面45aに作用し、このバネ力で板バネ(バネ手段)47は撓み、このバネの撓みで上カム部材44Aに作用する衝撃は緩和され、衝撃音が低減される。この衝撃音の低減と同時に板バネ47のバネ力は、その直後にパンチ部材40を上死点puに変位させる復元力として作用する。   After punching the sheet by the above-described operation, the drive motor M is rotated in the reverse direction to move the rack gear 51 to the right side in FIG. Then, the punch member 40 returns from the stop position p3 to the bottom dead center pd, and then returns to the top dead center side to the illustrated p2 position, p1 position, and top dead center pu. At this time, the punch member 40 first descends to the bottom dead center side, then reverses the direction and moves upward to the top dead center side. At this time, the punch member 40 is subjected to a load of direction change that reverses the motion in the direction of the bottom dead center to the motion in the direction of the top dead center, and a load that peels the blade edge of the punching blade 41 from the punched sheet. However, since the aforementioned plate spring 47 acts on the punch member 40 of the present invention, the spring force acts on the upper cam surface 45a, and the plate spring (spring means) 47 is bent by this spring force, and the spring is bent. Thus, the impact acting on the upper cam member 44A is alleviated and the impact sound is reduced. Simultaneously with the reduction of the impact sound, the spring force of the leaf spring 47 acts as a restoring force for displacing the punch member 40 to the top dead center pu immediately thereafter.

次にフレーム構造について説明する。前述の上部フレーム30は図2(a)に示すように断面コ字状のチャンネル部材で構成され、上下に対向する上ガイド31と下ガイド32に嵌合孔31a、32aが設けられている。パンチ部材40はこの嵌合孔31aにロッド軸上部42aが、嵌合孔32aに軸受部材60が取り付けられ、その軸受部材60の軸受孔60bにロッド軸下部42bが嵌合支持されている。従ってパンチ部材40は上部フレーム30に図2(a)上下方向(穿孔方向)に摺動自在に支持されている。   Next, the frame structure will be described. As shown in FIG. 2A, the upper frame 30 is formed of a channel member having a U-shaped cross section, and fitting holes 31a and 32a are provided in an upper guide 31 and a lower guide 32 that face each other in the vertical direction. In the punch member 40, the rod shaft upper part 42a is attached to the fitting hole 31a, the bearing member 60 is attached to the fitting hole 32a, and the rod shaft lower part 42b is fitted and supported in the bearing hole 60b of the bearing member 60. Therefore, the punch member 40 is supported by the upper frame 30 so as to be slidable in the vertical direction (perforation direction) in FIG.

また、上記下部フレーム35には穿孔刃41に適合する刃受孔(ダイ)38が設けられている。上記下部フレーム35は上部フレーム30に少許の間隙Sdを形成して固定ネジ39で一体に取り付けてあり、この上部フレーム30,下部フレーム35でユニット化されている。そして上部フレーム30には上述のカム溝45と係合するカムフォロア部材33が固定してある。図示のカムフォロア部材33は、台座部33aとガイド軸部33bとカムピン33cとを備え、前記嵌合孔31a、32aと所定の位置関係となるように上部フレーム30に形成した取付け孔に嵌合し台座部33aをビスなどで固定する。そしてガイド軸部33bは後述するスライド部材50をガイドし、カムピン33cは上記カム溝45と係合するピン形状に構成されている。従ってパンチ部材40は上部フレーム30に上下摺動自在に支持され、これに設けたカムピン33cにカム溝45が係合保持される。このカムピン33cがカムフォロア部材を構成している。   The lower frame 35 is provided with a blade receiving hole (die) 38 that fits the perforating blade 41. The lower frame 35 is formed as a unit with the upper frame 30 and the lower frame 35 by forming a small gap Sd in the upper frame 30 and attaching them integrally with a fixing screw 39. A cam follower member 33 that engages with the cam groove 45 is fixed to the upper frame 30. The illustrated cam follower member 33 includes a pedestal portion 33a, a guide shaft portion 33b, and a cam pin 33c. The cam follower member 33 is fitted into a mounting hole formed in the upper frame 30 so as to have a predetermined positional relationship with the fitting holes 31a and 32a. The pedestal 33a is fixed with a screw or the like. The guide shaft portion 33b guides a slide member 50 described later, and the cam pin 33c is configured in a pin shape that engages with the cam groove 45. Accordingly, the punch member 40 is supported by the upper frame 30 so as to be slidable up and down, and the cam groove 45 is engaged and held by the cam pin 33c provided thereon. The cam pin 33c constitutes a cam follower member.

また、上記パンチ部材40には受動歯車46が一体に取り付けられている。この受動歯車46は後述する駆動モータMに伝動部材(ラック歯車)51を介して連結される。このように構成されたパンチ部材40は、穿孔刃41及びロッド軸上下部42a、42bを例えばSUS系鋼材のような研磨性の良い素材で構成する。この他鉄系金属或いはセラミックなどで形成しても良い。また、円筒カム44と受動歯車46とはPOM(ジュラコン樹脂)などの合成樹脂で成形することが加工性、静音性などから好ましいが、特にその材質を限定するものではない。そしてパンチ部材40の穿孔刃41と円筒カム44と受動歯車46とを一体化する。この一体化はこれらの三者を一体的に回転させる為であり、成型時にインサート成形によって一体化するか或いは固定ビス、接着剤などで固定する。   A passive gear 46 is integrally attached to the punch member 40. The passive gear 46 is connected to a drive motor M, which will be described later, via a transmission member (rack gear) 51. In the punch member 40 configured in this way, the punching blade 41 and the rod shaft upper and lower portions 42a and 42b are made of a material having good polishing properties such as SUS steel. In addition, it may be formed of iron-based metal or ceramic. The cylindrical cam 44 and the passive gear 46 are preferably molded from a synthetic resin such as POM (Duracon resin) from the viewpoint of workability and quietness, but the material is not particularly limited. The punching blade 41 of the punch member 40, the cylindrical cam 44, and the passive gear 46 are integrated. This integration is for these three members to rotate integrally, and is integrated by insert molding at the time of molding, or fixed with a fixing screw, an adhesive or the like.

次に上部フレーム30にはスライド部材50が図1左右方向に移動自在に組み込まれる。このスライド部材50にはラック歯車51が形成され、このラック歯車51は上述のように上部フレーム30に複数(図示のものは4個所)配置されたパンチ部材40a〜40dの各受動歯車46と噛合するようになっている。そしてスライド部材50は前述のカムフォロア部材33のガイド軸部33bと下ガイド32の間で上下方向を摺動自在に案内され、また上部フレーム30の背面と各受動歯車46との間で前後方向を案内(図2(a)参照)され図1左右方向に移動自在に支持されている。これによって各パンチ部材40a〜40dの受動歯車46とスライド部材50のラック歯車51とが噛合され、スライド部材50の移動量に応じて各パンチ部材40a〜40dは所定の角度関係(後述の位相差)でそれぞれ回転されることとなる。   Next, a slide member 50 is incorporated in the upper frame 30 so as to be movable in the left-right direction in FIG. A rack gear 51 is formed on the slide member 50, and the rack gear 51 meshes with the passive gears 46 of the punch members 40 a to 40 d arranged in a plurality (four in the drawing) on the upper frame 30 as described above. It is supposed to be. The slide member 50 is guided so as to be slidable in the vertical direction between the guide shaft portion 33 b of the cam follower member 33 and the lower guide 32, and is movable in the front-rear direction between the back surface of the upper frame 30 and each passive gear 46. It is guided (see FIG. 2A) and is supported so as to be movable in the left-right direction in FIG. As a result, the passive gear 46 of each punch member 40a to 40d and the rack gear 51 of the slide member 50 are engaged with each other, and each punch member 40a to 40d has a predetermined angular relationship (a phase difference described later) according to the amount of movement of the slide member 50. ) Will be rotated respectively.

上記スライド部材50には駆動モータMが次のように連結されている。前記上部フレーム30にはブラケット53で駆動モータMが取り付けてあり、その回転軸は減速歯車を介して駆動歯車G1に連結されている。そしてこの駆動歯車G1がスライド部材50のラック歯車51に歯合してある。従って駆動モータMの正逆転でスライド部材50は図1左右方向に移動することとなる。尚図示54はモータの回転軸に設けたエンコーダであり、Seはこれを検出するエンコードセンサである。また、上記スライド部材50にはその位置を検出するポジションセンサSnが配置されている。   A drive motor M is connected to the slide member 50 as follows. A drive motor M is attached to the upper frame 30 by a bracket 53, and its rotation shaft is connected to the drive gear G1 via a reduction gear. The drive gear G1 is meshed with the rack gear 51 of the slide member 50. Therefore, the slide member 50 moves in the left-right direction in FIG. 54 is an encoder provided on the rotating shaft of the motor, and Se is an encode sensor for detecting this. The slide member 50 is provided with a position sensor Sn for detecting its position.

以上説明した装置構成において、紙などの被穿孔シートSに2穴、若しくは4穴の孔開けを施す穿孔動作は次のように行う。穿孔装置Aには図示しない制御手段が例えば制御CPUで設けられている。そこでこの制御CPU(制御手段)の動作を図10のフローチャートに基づいて説明する。   In the apparatus configuration described above, the punching operation for punching 2 or 4 holes in the sheet S to be punched such as paper is performed as follows. The punching apparatus A is provided with a control means (not shown), for example, by a control CPU. The operation of this control CPU (control means) will be described based on the flowchart of FIG.

装置電源が投入され、装置が起動する(St100)と制御手段は例えば後処理装置から2穴孔開けであるか4穴孔開けであるか孔開けモードの選択信号(St101)を受ける。この指示信号で制御手段は前記スライド部材50をホームポジション(スタート位置)に移動する(St102)。このとき、制御手段は駆動モータMを上記ホームポジションから所定量オーバランさせた後、その回転方向を逆転する。するとスライド部材50はバックラッシュなくホームポジションに位置付けられる。制御手段はこの状態で駆動モータMを停止し、被穿孔シートSの搬送セットを待つ。   When the apparatus power is turned on and the apparatus is started (St100), the control means receives a selection signal (St101) for determining whether to drill two holes or four holes, for example, from the post-processing apparatus. In response to this instruction signal, the control means moves the slide member 50 to the home position (start position) (St102). At this time, the control means causes the drive motor M to overrun a predetermined amount from the home position, and then reverses the rotation direction. Then, the slide member 50 is positioned at the home position without backlash. In this state, the control unit stops the drive motor M and waits for the conveyance set of the punched sheet S.

次いで被穿孔シートSが所定のセット位置に準備されるとそのセット終了信号(St103)で制御手段は駆動モータMを回転駆動しスライド部材50を図1左方向に移動する(St104)。スライド部材50が左方向に移動すると、これに一体形成されているラック歯車51が受動歯車46を反時計方向に回転させる。するとパンチ部材40は図8(a)の状態から図9(f)の状態に徐々に反時計方向に回転しながら穿孔方向(スラスト方向)に移動する。この過程で被穿孔シートSには4穴又は2穴のパンチ孔が穿孔される(St105)。   Next, when the perforated sheet S is prepared at a predetermined set position, the control means rotates the drive motor M by the set end signal (St103) and moves the slide member 50 leftward in FIG. 1 (St104). When the slide member 50 moves in the left direction, the rack gear 51 integrally formed with the slide member 50 rotates the passive gear 46 counterclockwise. Then, the punch member 40 moves in the drilling direction (thrust direction) while gradually rotating counterclockwise from the state of FIG. 8A to the state of FIG. 9F. In this process, four or two punch holes are punched in the punched sheet S (St105).

次いで制御手段は孔開け動作が終了したか否かをポジションセンサSnで判断する(St106)。このとき例えば予め設定したジャム時間が経過(St107)してもセンサが上記動作終了位置を検出しないときにはジャムと判断し、駆動モータMを逆回転させる(St108)。この駆動モータMの逆回転でスライド部材50とパンチ部材40はホームポジションにバックし、これをポジションセンサSnで検知する(St109)。そこで制御手段がジャム信号を発し、例えば後処理装置のコントロールパネルに「ジャム」表示を行わせる。これと同時に装置電源をOFFする(St110)。   Next, the control means determines whether or not the drilling operation has been completed using the position sensor Sn (St106). At this time, for example, if the preset jam time has elapsed (St107) and the sensor does not detect the operation end position, it is determined that a jam has occurred, and the drive motor M is rotated reversely (St108). By the reverse rotation of the drive motor M, the slide member 50 and the punch member 40 are returned to the home position, and this is detected by the position sensor Sn (St109). Therefore, the control means issues a jam signal, for example, “jam” is displayed on the control panel of the post-processing apparatus. At the same time, the apparatus power is turned off (St110).

駆動モータMの逆回転でスライド部材50及びパンチ部材40がホームポジションに移動しないときには装置故障と見なしエラー信号を発し、コントロールパネルに「装置故障」を表示する(St111)。シートへの穿孔が正常に実行されると制御手段は、例えば後処理装置Cに穿孔終了信号を発し、後処理装置Cはシートを所定のセット位置から外部に搬出する。このシートの搬出と前後して制御手段は駆動モータMを逆回転させてスライド部材50をホームポジションに復帰させる。この状態で次のシートがセット位置に準備されるのを待つ。   When the slide member 50 and the punch member 40 do not move to the home position due to the reverse rotation of the drive motor M, it is regarded as a device failure and an error signal is issued, and “device failure” is displayed on the control panel (St111). When the punching of the sheet is normally executed, the control unit issues a punching end signal to the post-processing apparatus C, for example, and the post-processing apparatus C carries the sheet out of the predetermined set position. The control means reversely rotates the drive motor M to return the slide member 50 to the home position before and after the unloading of the sheet. In this state, it waits for the next sheet to be prepared at the set position.

パンチ部材40がホームポジションから穿孔位置に移動する過程で穿孔刃41はスラスト方向への移動と同時にラジアル方向に回転し図8(a)(b)(c)及び図9(d)(e)(f)の順に捻り運動で被穿孔シートSにパンチ孔を穿孔する。この為穿孔刃41の被穿孔シートSに及ぼす剪断力は穿孔刃41を単純にスラスト方向に移動する場合に比べ数倍に増大する。例えば本実施形態においては剪断力を2倍に増大させることが出来、結果として駆動モータMの負荷トルクを半減させることが可能となった。逆に穿孔速度を2倍にしても駆動モータMに及ぶ負荷が増大することがなく伝動機構の簡素化とパンチ動作の高速化が可能となった。   As the punch member 40 moves from the home position to the drilling position, the drilling blade 41 rotates in the radial direction simultaneously with the movement in the thrust direction, and FIGS. 8A, 8B, 8C, 9D, and 9E. Punch holes are punched in the punched sheet S by twisting motion in the order of (f). For this reason, the shearing force exerted on the perforated sheet S by the perforating blade 41 increases several times as compared with the case where the perforating blade 41 is simply moved in the thrust direction. For example, in this embodiment, the shearing force can be increased by a factor of 2, and as a result, the load torque of the drive motor M can be halved. Conversely, even if the drilling speed is doubled, the load on the drive motor M does not increase, and the transmission mechanism can be simplified and the punching operation can be speeded up.

従って、図8に示すようにラック歯車51を有するスライド部材50の移動に伴ってパンチ部材40は上死点puから傾斜カム面45θに沿って反時計方向に回転しながら穿孔開始点p1に移動してシートに接し穿孔を開始する。そして同方向に回転しながらシートを貫通し穿孔終了点p2に移動し、次いで下死点pdに移動する。次にスライド部材50が更に移動するとパンチ部材40は下死点pdから上死点pu方向に移動(上昇)する。このときパンチ部材40は傾斜カム面45θに沿って反時計方向に回転しながら上記穿孔終了点p2に戻り、更に穿孔開始点p1に戻り、最後に上死点puに復帰する。   Accordingly, as shown in FIG. 8, as the slide member 50 having the rack gear 51 is moved, the punch member 40 moves from the top dead center pu to the drilling start point p1 while rotating counterclockwise along the inclined cam surface 45θ. Then, the punching is started in contact with the sheet. Then, while rotating in the same direction, the sheet passes through the sheet, moves to the punching end point p2, and then moves to the bottom dead center pd. Next, when the slide member 50 further moves, the punch member 40 moves (rises) from the bottom dead center pd toward the top dead center pu. At this time, the punch member 40 returns to the punching end point p2 while rotating counterclockwise along the inclined cam surface 45θ, further returns to the punching start point p1, and finally returns to the top dead center pu.

次に次シートの穿孔時には上記スライド部材50は反対方向に移動するため、パンチ部材40は時計方向に回転しながら同様の動作を繰り返す。つまり順次穿孔するシートの奇数枚目の穿孔時にはパンチ部材40は例えば時計方向に回転しながら上死点puから下死点pdに移動し、その後同方向に回転しながら下死点pdから上死点puに移動する。そして偶数枚目のシートの穿孔時にはパンチ部材40は逆方向、時計方向に回転しながら上死点puから下死点pdに、また下死点pdから上死点puに移動復帰することとなる。   Next, since the slide member 50 moves in the opposite direction when the next sheet is punched, the punch member 40 repeats the same operation while rotating clockwise. In other words, when punching odd-numbered sheets sequentially punched, the punch member 40 moves, for example, from the top dead center pu to the bottom dead center pd while rotating clockwise, and then from the bottom dead center pd while rotating in the same direction. Move to point pu. When punching even-numbered sheets, the punch member 40 moves back from the top dead center pu to the bottom dead center pd and from the bottom dead center pd to the top dead center pu while rotating in the reverse direction and clockwise. .

そこで穿孔刃41の先端に屑紙片66が詰まっても穿孔時の回転で振り飛ばされるか或いは次シート穿孔時の反対方向の回転で振り飛ばされることとなる。このように穿孔刃41に付着した屑紙片66は正逆方向の回転力を受けて遠心力で刃先から分離し、四方八方に分散して下部フレーム35の下部に配置した屑ボックス68に略々均等に堆積収納される。   Therefore, even if the tip of the punching blade 41 is clogged with the scrap paper piece 66, it is shaken off by the rotation at the time of punching or is shaken off by the rotation in the opposite direction at the time of punching the next sheet. In this way, the scrap paper pieces 66 adhering to the perforating blade 41 are separated from the blade edge by centrifugal force under forward and reverse rotational forces, and are roughly distributed in the waste box 68 disposed in the lower part of the lower frame 35 by being dispersed in all directions. Accumulated and stored.

[画像形成ユニットの構成]
図11に画像形成ユニットの構成を示す。画像形成装置Bの印字部3には静電ドラム10が設けられ、この静電ドラム10の周囲には印字ヘッド9、現像器11、転写チャージャ12などが配置されている。そして印字ヘッド9は例えばレーザ発光器などで構成され、静電ドラム10上に静電潜像を形成し、この潜像に現像器11でトナーインクを付着し、転写チャージャ12でシートに印刷する。この印刷シートは定着器13で定着され排紙経路17に搬出される。排紙部4にはケーシング1に形成した排紙口14と排紙ローラ15が配置されている。尚図示16は循環経路であり、排紙経路17からの印刷シートをスッチバック経路で表裏反転した後再びレジストローラ7に送り、印刷シートの裏面に画像形成する。このように片面若しくは両面に画像形成された印刷シートは排紙口14から排紙ローラ15で搬出される。
[Configuration of image forming unit]
FIG. 11 shows the configuration of the image forming unit. An electrostatic drum 10 is provided in the printing unit 3 of the image forming apparatus B, and a print head 9, a developing device 11, a transfer charger 12, and the like are disposed around the electrostatic drum 10. The print head 9 is composed of, for example, a laser light emitter, and forms an electrostatic latent image on the electrostatic drum 10. A toner ink is attached to the latent image by the developing device 11 and printed on a sheet by the transfer charger 12. . This print sheet is fixed by the fixing device 13 and carried out to the paper discharge path 17. A paper discharge port 14 and a paper discharge roller 15 formed in the casing 1 are disposed in the paper discharge unit 4. Reference numeral 16 denotes a circulation path. The print sheet from the paper discharge path 17 is turned upside down on the switchback path and then sent to the registration roller 7 again to form an image on the back surface of the print sheet. In this way, the print sheet on which one side or both sides are formed is carried out from the paper discharge port 14 by the paper discharge roller 15.

尚図示20はスキャナユニットであり、上記印字ヘッド9で印刷する原稿画像を光学的に読み取る。その構造は一般的に知られているように原稿シートを載置セットするプラテン23と、このプラテン23に沿って原稿画像をスキャンするキャリッジ21と、このキャリッジ21からの光学像を光電変換する光学読取手段(例えばCCDディバイス)22とから構成されている。また図示のものは原稿シートを自動的にプラテンに給送する原稿送り装置25がプラテン23上に装備してある。   In the figure, reference numeral 20 denotes a scanner unit which optically reads a document image to be printed by the print head 9. As is generally known, the platen 23 on which a document sheet is placed and set, a carriage 21 that scans a document image along the platen 23, and an optical device that photoelectrically converts an optical image from the carriage 21. It comprises a reading means (for example, a CCD device) 22. In the illustrated example, a document feeder 25 for automatically feeding a document sheet to the platen is provided on the platen 23.

そこで上記の排紙口14には後処理装置Cが連設してある。この後処理装置Cはシート搬送経路26と、この搬送経路26に配置したパンチユニット27と排紙スタッカ28とから構成されている。シート搬送経路26にはパンチユニット27の上流側に整合手段26aが設けられ、シート後端を整合する。またシート搬送経路26には正逆転ローラ26bが配置され、搬入口26cからのシートを整合手段26aに突き当て整合し、同時にこの正逆転ローラ26bはパンチユニット27からシートを排紙スタッカ28に搬出する。図示Siはシート検知センサである。尚パンチユニット27は先に説明した図1に示す装置で構成されている。   Therefore, a post-processing device C is connected to the paper discharge port 14. The post-processing apparatus C includes a sheet conveyance path 26, a punch unit 27 and a paper discharge stacker 28 disposed in the conveyance path 26. The sheet conveying path 26 is provided with an aligning means 26a on the upstream side of the punch unit 27, and aligns the sheet trailing edge. A forward / reverse roller 26b is disposed in the sheet conveyance path 26, and the sheet from the carry-in entrance 26c is abutted and aligned with the aligning means 26a. At the same time, the forward / reverse roller 26b carries the sheet from the punch unit 27 to the sheet discharge stacker 28. To do. Si shown in the figure is a sheet detection sensor. The punch unit 27 is composed of the apparatus shown in FIG.

このように構成された後処理装置Cは画像形成装置Bから印刷済のシートを搬入口26cから受け取り、シート後端をシート検知センサSiで検知し、シート後端が整合手段26aを通過したタイミングで正逆転ローラ26bを逆転(図示反時計方向)する。するとシートはスイッチバックされシート後端が整合手段26aに突き当て整合される。この整合後に正逆転ローラ26bは停止し、シートをその位置に保持する。この状態でパンチユニット27は駆動モータMを駆動して前述の穿孔動作を実行する。穿孔動作の実行後は前述のポジションセンサSnからのエンド信号で正逆転ローラ26bを図示時計方向に回転しパンチ穴を施されたシートを排紙スタッカ28に搬出する。尚この後処理装置Cには、図示しないがステープルユニット、スタンプユニットなどが装置仕様に応じて組み込まれる。   The post-processing apparatus C configured as described above receives the printed sheet from the image forming apparatus B from the carry-in entrance 26c, detects the sheet rear end by the sheet detection sensor Si, and the timing at which the sheet rear end passes through the aligning unit 26a. Thus, the forward / reverse rotation roller 26b is reversely rotated (counterclockwise in the figure). Then, the sheet is switched back and the rear end of the sheet is abutted and aligned with the aligning means 26a. After this alignment, the forward / reverse roller 26b stops and holds the sheet in that position. In this state, the punch unit 27 drives the drive motor M to execute the above-described punching operation. After execution of the punching operation, the forward / reverse rotation roller 26b is rotated in the clockwise direction in the figure by the end signal from the position sensor Sn, and the punched sheet is carried out to the paper discharge stacker 28. In addition, although not shown, a staple unit, a stamp unit, and the like are incorporated in the post-processing apparatus C according to apparatus specifications.

本発明に係わる穿孔装置の全体構成を示す説明図。BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which shows the whole structure of the punching apparatus concerning this invention. 図1の装置における要部説明図であり、(a)は側面断面図を示し、(b)はパンチ部材の断面構成図を示す。It is principal part explanatory drawing in the apparatus of FIG. 1, (a) shows side surface sectional drawing, (b) shows the cross-section block diagram of a punch member. 図1の装置におけるパンチ穿孔部の拡大説明図であり、(a)は穿孔部の全体を、(b)は穿孔部の拡大図を示す。FIG. 2 is an enlarged explanatory view of a punch punching portion in the apparatus of FIG. 1, (a) shows the entire punching portion, and (b) shows an enlarged view of the punching portion. 図1の装置におけるパンチ部材の説明図であり、(a)はその断面図、(b)は刃先形状の説明図、(c)は刃先形状の展開説明図。It is explanatory drawing of the punch member in the apparatus of FIG. 1, (a) is the sectional drawing, (b) is explanatory drawing of blade edge shape, (c) is an expansion explanatory drawing of blade edge shape. 図1の装置におけるパンチ部材の説明図であり、(a)はその斜視図、(b)は傾斜カムの形状説明図。It is explanatory drawing of the punch member in the apparatus of FIG. 1, (a) is the perspective view, (b) is shape explanatory drawing of an inclination cam. 図1の装置におけるパンチ動作の説明図であり、(a)は穿孔刃が上死点位置のときの状態説明図、(b)は穿孔刃で穿孔が開始されたときの状態説明図である。It is explanatory drawing of the punch operation | movement in the apparatus of FIG. 1, (a) is a state explanatory view when a perforation blade is a top dead center position, (b) is a state explanatory view when a perforation is started with a perforation blade. . 図1の装置におけるパンチ動作の説明図であり、(c)は穿孔刃が下死点位置のときの状態説明図、(d)は穿孔刃で上死点に復帰する直前の状態説明図。It is explanatory drawing of the punch operation | movement in the apparatus of FIG. 1, (c) is a state explanatory view when a piercing blade is a bottom dead center position, (d) is state explanatory drawing just before returning to a top dead center with a piercing blade. (a)乃至(c)図1の装置に於ける穿孔状態を示す動作状態説明図。(A) thru | or (c) The operation state explanatory drawing which shows the piercing | piercing state in the apparatus of FIG. (d)乃至(f)図1の装置に於ける穿孔状態を示す動作状態説明図。(D) thru | or (f) The operation state explanatory drawing which shows the piercing | piercing state in the apparatus of FIG. 本発明に係わる穿孔装置の制御動作を示すフローチャート。The flowchart which shows the control operation of the punching apparatus concerning this invention. (a)本発明に係わる画像形成装置及び後処理装置の全体構成を示す説明図であり、(b)後処理装置の要部拡大図。(A) It is explanatory drawing which shows the whole structure of the image forming apparatus concerning this invention, and a post-processing apparatus, (b) The principal part enlarged view of a post-processing apparatus. 従来のパンチ部材の駆動機構を示す説明図。Explanatory drawing which shows the drive mechanism of the conventional punch member.

符号の説明Explanation of symbols

A 穿孔装置
S 被穿孔シート
St ストローク
d1 外径
d1′ 軸受内径
d2 開口部の内径
M 駆動モータ(駆動手段)
pu 上死点
pd 下死点
30 上部フレーム(ベースフレーム)
31 上ガイド
32 下ガイド
35 下部フレーム(刃受孔プレート)
40 パンチ部材
40a 第1パンチ部材
40b 第2パンチ部材
40c 第3パンチ部材
40d 第4パンチ部材
41 穿孔刃
41x1 山形状部
41x2 山形状部
41y1 谷形状部
41y2 谷形状部
42 ロッド軸(パンチ軸)
44 円筒カム(カム手段)
45 カム溝
46 受動歯車
60 軸受部材
60a 軸受面
60b 軸受孔
60e 下端エッジ
61 開口部
62 上ガイド面
66 屑紙片
66z 紙粉
68 屑ボックス
A Punching device S Punched sheet St Stroke d1 Outer diameter d1 'Bearing inner diameter d2 Opening inner diameter M Drive motor (drive means)
pu top dead center pd bottom dead center 30 upper frame (base frame)
31 Upper guide 32 Lower guide 35 Lower frame (blade receiving hole plate)
40 Punch member 40a 1st punch member 40b 2nd punch member 40c 3rd punch member 40d 4th punch member 41 Drilling blade 41x1 Mountain shape part 41x2 Mountain shape part 41y1 Valley shape part 41y2 Valley shape part 42 Rod axis (punch axis)
44 Cylindrical cam (cam means)
45 Cam groove 46 Passive gear 60 Bearing member 60a Bearing surface 60b Bearing hole 60e Lower end edge 61 Opening portion 62 Upper guide surface 66 Waste paper piece 66z Paper dust 68 Waste box

Claims (5)

ロッド軸の先端に穿孔刃を有するパンチ部材と、
上記穿孔刃に適合する刃受孔と、
上記ロッド軸を穿孔方向に往復動可能に支持する上部フレームと、
上記刃受孔を備え上記上部フレームとの間に被穿孔シートのセット間隙を形成して対向配置された下部フレームと、
上記パンチ部材を上死点と下死点との間で往復動する駆動手段と、
を備え、
上記穿孔刃の刃先端面は、断面円形状で、円周方向に波状の凹凸部を形成する形状に構成され、
上記上部フレームには、
上記ロッド軸の少なくとも下端部を軸受け支持する軸受部材と、
被穿孔シートの上紙面を規制する上ガイド面と、
が設けられ、
上記軸受部材は、
上記ロッド軸を嵌合支持するスリーブ形状の軸受面と、
この軸受面に連なり軸受内径より大径の凹陥状開口部と、
が設けられ、
上記凹陥状開口部は上記軸受面の下方で上記上ガイド面の上方位置に配置され、
上記パンチ部材の上死点は、
最上端に位置する刃先端面が上記軸受面より下方に位置し、最下端に位置する刃先端面が上記上ガイド面より上方に位置するように設定されていることを特徴とする穿孔装置。
A punch member having a drilling blade at the tip of the rod shaft;
A blade receiving hole adapted to the drilling blade,
An upper frame that supports the rod shaft so as to reciprocate in the drilling direction;
A lower frame provided with the blade receiving hole and opposed to form a set gap of the perforated sheet between the upper frame,
Driving means for reciprocating the punch member between a top dead center and a bottom dead center;
With
The blade tip surface of the drilling blade has a circular cross-section, and is configured to form a wavy uneven portion in the circumferential direction,
In the upper frame,
A bearing member that supports and supports at least the lower end of the rod shaft;
An upper guide surface that regulates the upper surface of the perforated sheet;
Is provided,
The bearing member is
A sleeve-shaped bearing surface for fitting and supporting the rod shaft;
A concave opening that is continuous with the bearing surface and is larger than the inner diameter of the bearing;
Is provided,
The recessed opening is disposed below the bearing surface and above the upper guide surface,
The top dead center of the punch member is
A perforating apparatus, wherein a blade tip surface located at the uppermost end is positioned below the bearing surface, and a blade tip surface located at the lowermost end is located above the upper guide surface.
前記スリーブ形状の軸受面と前記凹陥状開口部とは、前記穿孔刃に付着した紙粉を軸受面
の下端エッジで掻き落として凹陥状開口部から落下させるように連結されていることを特徴とする請求項1に記載の穿孔装置。
The sleeve-shaped bearing surface and the recessed opening are connected so that paper dust attached to the perforating blade is scraped off at the lower edge of the bearing surface and dropped from the recessed opening. The perforating apparatus according to claim 1.
前記上ガイド面は、穿孔不能シートの穿孔処理部が前記パンチ部材に追随して前記凹陥状開口部に没入しないように該凹陥状開口部の下方に配置されていることを特徴とする請求項1に記載の穿孔装置。 The upper guide surface is disposed below the recessed opening so that a punching portion of the non-piercing sheet follows the punch member and does not enter the recessed opening. The perforating apparatus according to 1. 前記駆動手段は、前記パンチ部材に穿孔方向のスラスト力と、穿孔方向と直交するラジアル方向の回転力を伝達し、
前記パンチ部材はラジアル方向に回転しながらスラスト方向に往復動してシートに穿孔することを特徴とする請求項1に記載の穿孔装置。
The driving means transmits a thrust force in a punching direction and a rotational force in a radial direction orthogonal to the punching direction to the punch member,
2. The punching apparatus according to claim 1, wherein the punch member reciprocates in the thrust direction while rotating in the radial direction to punch the sheet.
前記駆動手段は、
駆動モータと、
上記駆動モータの回転を前記パンチ部材の回転運動に伝達する伝動手段と、
このパンチ部材の回転運動を穿孔方向運動に変換するカム手段と、
から構成され、
前記パンチ部材は被穿孔シートに回転しながら穿孔することを特徴とする請求項2に記載の穿孔装置。
The driving means includes
A drive motor;
Transmission means for transmitting the rotation of the drive motor to the rotational movement of the punch member;
Cam means for converting the rotational motion of the punch member into motion in the drilling direction;
Consisting of
The punching apparatus according to claim 2, wherein the punch member punches the punched sheet while rotating.
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JP2012228770A (en) * 2011-04-14 2012-11-22 Seiko:Kk Sheet punching device and post-processing device provided with the same
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CN104175363A (en) * 2013-05-20 2014-12-03 李龙雨 Automatic electric punching apparatus
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JP2012228770A (en) * 2011-04-14 2012-11-22 Seiko:Kk Sheet punching device and post-processing device provided with the same
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