JPWO2018105405A1 - sewing machine - Google Patents

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JPWO2018105405A1
JPWO2018105405A1 JP2018554919A JP2018554919A JPWO2018105405A1 JP WO2018105405 A1 JPWO2018105405 A1 JP WO2018105405A1 JP 2018554919 A JP2018554919 A JP 2018554919A JP 2018554919 A JP2018554919 A JP 2018554919A JP WO2018105405 A1 JPWO2018105405 A1 JP WO2018105405A1
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sewing
support arm
needle
sewing machine
support member
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JP7022995B2 (en
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勝治 吉川
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Tism Co., Ltd.
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Tism Co., Ltd.
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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B73/00Casings
    • D05B73/04Lower casings
    • D05B73/12Slides; Needle plates
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B29/00Pressers; Presser feet
    • D05B29/02Presser-control devices
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B3/00Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05CEMBROIDERING; TUFTING
    • D05C9/00Appliances for holding or feeding the base fabric in embroidering machines
    • D05C9/02Appliances for holding or feeding the base fabric in embroidering machines in machines with vertical needles
    • D05C9/04Work holders, e.g. frames
    • D05C9/06Feeding arrangements therefor, e.g. influenced by patterns, operated by pantographs

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

ミシンは、針板(4)に設けられた開口(24)を通って上下動可能な支持アーム(19)であって、縫製対象物を支持するための布受け面(22)と、上下動する針の通過を許すように布受け面に設けられた(針孔)23とを含む支持部材と、該支持アームの布受け面の水平を維持しつつ、該支持アームを上下動する昇降機構(40)を備える。支持アームは、ミシンに対して横方向に延び、その一端において昇降機構に片持ち状に取り付けられ、他端において布受け面及び針孔を有する。昇降機構は、直線状に延びたスライドレール(10)を含み、支持アームを該スライドレールに対して略垂直方向に支持し、且つ、該支持アームをスライドレールに沿って上下動する。これにより、縫製時に被縫製物を支持する支持部の高さを所望の高さに変更できる。The sewing machine is a support arm (19) that can move up and down through an opening (24) provided in the needle plate (4), and has a cloth receiving surface (22) for supporting a sewing object, and a vertical movement. And a lifting mechanism that moves the support arm up and down while maintaining the level of the cloth receiving surface of the support arm. (40) is provided. The support arm extends laterally with respect to the sewing machine, is attached to the lifting mechanism at one end in a cantilever manner, and has a cloth receiving surface and a needle hole at the other end. The elevating mechanism includes a slide rail (10) that extends linearly, supports the support arm in a direction substantially perpendicular to the slide rail, and moves the support arm up and down along the slide rail. Thereby, the height of the support part which supports a to-be-sewn material at the time of sewing can be changed into desired height.

Description

本発明は、ミシンに関し、詳しくは、ミシンにおいて縫製対象物を支持するための機構に関する。  The present invention relates to a sewing machine, and more particularly to a mechanism for supporting a sewing object in the sewing machine.

従来、被服、バッグ、靴等の製品を製造する際に使用されるパターン縫いミシンにおいて、製品本体としての基布Hに縫着片K(パーツ)を重ね合わせて縫い付けるときは、型板が使用される。図6及び図7は、一例として、靴の縫製に用いる型板30を説明する図である。型板30は、下板27と、該下板27に対して蝶番により取り付けられた上板29とで構成される。下板27には、基布Hに縫着型Kを縫い付けるためのステッチングSのパターンに対応するパターン孔26が形成されている。上板29は、縫着片Kの形状とほぼ一致する抜き孔28を有し、抜き孔28により、縫着片Kが基布Hに対して位置決めされる。具体的には、下板27の上面に設けられているガイドピン31に合わせて下板27に基布Hが載置され、載置された基布Hを上板29が挟み、そして、その上板29の抜き孔28に縫着片Kが嵌入されることにより、型板30に基布H及び縫着片Kがセットされる。型板30を保持する保持枠を、ステッチングSのパターンに対応するパターンデータに基づいて移動させつつ、周知のミシン機構により縫着片KにステッチングSを施すことにより、縫着片Kが基布Hに縫い付けられる。  Conventionally, in a pattern sewing machine used when manufacturing products such as clothes, bags, shoes, etc., when sewing pieces K (parts) on a base fabric H as a product body, used. FIG.6 and FIG.7 is a figure explaining the template 30 used for sewing of shoes as an example. The template 30 includes a lower plate 27 and an upper plate 29 attached to the lower plate 27 with a hinge. A pattern hole 26 corresponding to a pattern of stitching S for sewing the sewing mold K to the base fabric H is formed in the lower plate 27. The upper plate 29 has a punching hole 28 that substantially matches the shape of the sewing piece K, and the sewing piece K is positioned with respect to the base fabric H by the punching hole 28. Specifically, the base fabric H is placed on the lower plate 27 in accordance with the guide pins 31 provided on the upper surface of the lower plate 27, the upper plate 29 sandwiches the placed base fabric H, and the By inserting the sewing piece K into the hole 28 of the upper plate 29, the base cloth H and the sewing piece K are set on the template 30. While the holding frame for holding the template 30 is moved based on the pattern data corresponding to the pattern of the stitching S, the stitching piece K is formed by applying the stitching S to the sewing piece K by a known sewing mechanism. It can be sewn to the base fabric H.

しかし、型板30を使用した縫い付けには、次のような問題があった。下板27の上面に載置された基布Hは、下板27の厚み分、針板から浮いた状態であるため、縫着片K及び基布Hを下方から支承するものがない。そのために、縫い針が縫着片Kに刺さった際の貫通抵抗により、基布Hが沈み込み、それに伴い縫着片Kの姿勢がずれてしまう。その結果、縫着片K上の正しい位置に針が落ちなかったり、縫着片Kの生地によっては縫いしわ等が発生したりする、といった問題が生じやすかった。特に、靴の製造においては、縫い付ける縫着片Kの縁部ぎりぎりに沿ってステッチを施すため、縫い針が縫着片Kから滑り落ちてしまうことにより縫い目のずれや目とびが生じるなど、縫い不良の原因となっていた。  However, sewing using the template 30 has the following problems. Since the base fabric H placed on the upper surface of the lower plate 27 is in a state of floating from the needle plate by the thickness of the lower plate 27, there is nothing to support the sewing piece K and the base fabric H from below. Therefore, the base fabric H sinks due to the penetration resistance when the sewing needle pierces the sewing piece K, and the posture of the sewing piece K is shifted accordingly. As a result, the problem that the needle does not fall at the correct position on the sewing piece K, or a wrinkle or the like is generated depending on the fabric of the sewing piece K tends to occur. In particular, in the manufacture of shoes, stitching is performed along the edge of the sewn piece K to be sewn, so that the sewing needle slips off the sewn piece K, causing stitch shifts and skipping, etc. It was the cause of sewing failure.

上記の問題の解決策として、特許文献1は、針板から突出する位置に変位可能な環状のスリーブにより、縫製対象物を下方から支持し、それにより、縫製対象物の変位を防止又は抑制することを開示している。また、特許文献2は、縫製作業面の下方に、上下揺動可能な布受け装置を設け、布押さえ装置と布受け装置の両方で縫製対象物を挟持することにより、縫製対象物が縫製中に下方に変位しないようにすることを開示している。  As a solution to the above problem, Patent Document 1 supports a sewing object from below by an annular sleeve that can be displaced to a position protruding from a needle plate, thereby preventing or suppressing the displacement of the sewing object. It is disclosed. In Patent Document 2, a cloth receiving device that can swing up and down is provided below the sewing work surface, and the sewing object is being sewn by holding the sewing object between both the cloth pressing device and the cloth receiving device. It is disclosed that it is not displaced downward.

しかし、特許文献1は、先端に傾斜面を有する滑り子を横方向に移動し、その傾斜面を環状スリーブの下部に潜り込ませることにより、環状スリーブを持ち上げる構造であるため、環状スリーブを持ち上げる高さを様々に変更することは難しい。また、特許文献1の構成では、環状スリーブを持ち上げる際に環状スリーブの下部に横方向の力が加わる。環状スリーブとその挿通孔の間にガタツキがあるため、前記横方向の力により、環状スリーブが鉛直に上昇せず、斜めの姿勢で上昇してしまう。このことは、環状スリーブと縫い針の接触による針折れの原因となる。さらに言えば、特許文献1の構成では、環状スリーブは、持ち上げられた状態では滑り子の先端に支承されるだけなので、縫い針の貫通抵抗により縫製対象物が下方に押圧されたときに、環状スリーブが滑り子を押して撓ませる、という問題も生じ易い。  However, Patent Document 1 has a structure in which the annular sleeve is lifted by moving the slider having the inclined surface at the tip in the lateral direction and causing the inclined surface to enter the lower portion of the annular sleeve. It is difficult to change the size. Further, in the configuration of Patent Document 1, a lateral force is applied to the lower portion of the annular sleeve when the annular sleeve is lifted. Since there is a backlash between the annular sleeve and the insertion hole, the annular sleeve does not rise vertically but rises in an oblique posture due to the lateral force. This causes needle breakage due to contact between the annular sleeve and the sewing needle. Furthermore, in the configuration of Patent Document 1, since the annular sleeve is only supported at the tip of the slider in the lifted state, when the sewing object is pressed downward by the penetration resistance of the sewing needle, the annular sleeve is There is also a tendency that the sleeve pushes and slides the slider.

また、特許文献2の布受け装置は、横方向に延びたアーム状の布受け台の略中央に布受けを備え、布受け台の一端を揺動支点として、布受け台の他端を上下に揺動する構成であり、その機構が複雑である。また、特許文献2の布受け装置は、横方向にサイズが大きくなるため、複数のヘッドを並設する多頭式ミシンには向かない。また、特許文献2の布受け装置では、釜の正面に布受け台が位置するので、その布受け台が障害となって、釜からボビンを脱着する周知のボビン交換機構などを設けることができない。更に言えば、特許文献2の布受け装置は、横方向に延びたアーム状の布受け台の一端を揺動支点として、布受け台の他端を上下に揺動することにより、上昇位置から下方の退避位置へ切り替える構造であるため、昇降時に布受け台が平行移動しない。特許文献2の構成では、所定の高さ位置でのみ布受け台が略水平となり、それ以外では、布受け台が斜めに傾いてしまう(特許文献2の図3、図4を参照)。従って、仮に、特許文献2において、布受け台の高さを型板の厚みに応じて変えたとしても、布受け台の高さによっては、布受けの位置が針からずれてしまう。  In addition, the cloth receiving device of Patent Document 2 includes a cloth receiver at substantially the center of an arm-shaped cloth receiving base extending in the lateral direction, with one end of the cloth receiving base serving as a swing fulcrum, and the other end of the cloth receiving base being moved up and down. And the mechanism is complicated. Moreover, since the cloth receiving device of Patent Document 2 increases in size in the lateral direction, it is not suitable for a multi-head sewing machine in which a plurality of heads are arranged in parallel. Further, in the cloth receiving device of Patent Document 2, since the cloth receiving base is located in front of the hook, the cloth receiving base becomes an obstacle, and it is not possible to provide a known bobbin changing mechanism for removing the bobbin from the hook. . Further, the cloth receiving device of Patent Document 2 uses the one end of the arm-shaped cloth receiving base extending in the lateral direction as a swing fulcrum, and swings the other end of the cloth receiving base up and down, so that Since the structure is switched to the lower retreat position, the cloth cradle does not move in parallel during the lifting and lowering. In the configuration of Patent Document 2, the cloth cradle is substantially horizontal only at a predetermined height position, and otherwise, the cloth cradle is inclined obliquely (see FIGS. 3 and 4 of Patent Document 2). Therefore, even if the height of the cloth cradle is changed in accordance with the thickness of the template in Patent Document 2, the position of the cloth cradle is displaced from the needle depending on the height of the cloth cradle.

従って、特許文献1及び2のいずれにおいても、環状スリーブ又は布受けの高さを任意に変更することができない。また、型板を用いる縫製を行う場合、定まった厚みの型板を使用する場合しか効果を奏さない。一般的に、型板(上板、下板)の厚みは1〜4mmと様々である。しかし、上記の従来技術の構造では、様々な厚みの型板に対応することができない。  Therefore, in either of Patent Documents 1 and 2, the height of the annular sleeve or the cloth receiver cannot be arbitrarily changed. Moreover, when sewing using a template, it is effective only when a template with a fixed thickness is used. In general, the thickness of the template (upper plate, lower plate) varies from 1 to 4 mm. However, the above prior art structure cannot cope with templates having various thicknesses.

特許第3556671号公報Japanese Patent No. 3556671 特開平4‐300581号公報Japanese Patent Laid-Open No. 4-300581

本発明は上述の点に鑑みてなされたもので、縫製対象物を支持する支持部材の高さを所望の高さに変更できるようにしたミシンを提供することを目的とする。  The present invention has been made in view of the above points, and an object of the present invention is to provide a sewing machine that can change the height of a support member that supports a sewing object to a desired height.

本発明は、針板に設けられた開口を通って上下動可能な支持部材であって、縫製対象物を支持するための上端面と、上下動する針の通過を許すように前記上端面に設けられた針孔とを含む前記支持部材と、前記支持部材の前記上端面の水平を維持しつつ、該支持部材を上下動する昇降機構とを備えるミシンである。  The present invention is a support member that can move up and down through an opening provided in a needle plate, and has an upper end surface for supporting an object to be sewn, and the upper end surface to allow passage of a needle that moves up and down. A sewing machine comprising: the support member including a provided needle hole; and an elevating mechanism that moves the support member up and down while maintaining the level of the upper end surface of the support member.

上記の構成によれば、昇降機構が支持部材の上端面の水平を維持しつつ、該支持部材を上下動するので、支持部材をどのような高さへ移動しても、その移動によって、針落ち位置と針孔がずれることがなく、支持部材の上端面は適切な姿勢で縫製対象物を支持し、以って、被縫製物の変位を防止又は抑制できる。このため、例えば、型板を用いる縫い付けにおいて、様々な厚さの型板に対応することができる。   According to the above configuration, the elevating mechanism moves the support member up and down while maintaining the level of the upper end surface of the support member. Therefore, even if the support member is moved to any height, the movement causes the needle to move up and down. The fall position and the needle hole are not displaced, and the upper end surface of the support member supports the sewing object in an appropriate posture, thereby preventing or suppressing the displacement of the sewing object. For this reason, for example, in sewing using a template, it is possible to deal with templates having various thicknesses.

従って、本発明のミシンによれば、縫製対象物を支持する支持部材の高さを所望の高さに変更できる、という優れた効果を奏する。  Therefore, according to the sewing machine of the present invention, there is an excellent effect that the height of the support member that supports the sewing object can be changed to a desired height.

本発明の一実施例に係るミシンの正面図であって、下方に設けられる機構を抽出して示す図。It is a front view of the sewing machine concerning one example of the present invention, and is a figure extracting and showing a mechanism provided below. 図1のミシンを矢印Aから見た側面図。The side view which looked at the sewing machine of FIG. 1 from arrow A. FIG. 図1のミシンを矢印Bから見た平面図。The top view which looked at the sewing machine of FIG. 支持部材及び昇降機構を抽出して示す分解斜視図。The exploded perspective view which extracts and shows a supporting member and a raising / lowering mechanism. (A)は支持部材の退避位置を説明する図、(B)は支持部材の最上位位置を説明する図。(A) is a figure explaining the retracted position of a supporting member, (B) is a figure explaining the highest position of a supporting member. 従来技術を説明する図であって、縫い付けに使用される型板の分解斜視図。It is a figure explaining a prior art, Comprising: The disassembled perspective view of the template used for sewing. 従来技術を説明する図であって、図6の型板を上から見た図。It is a figure explaining a prior art, Comprising: The figure which looked at the template of FIG. 6 from the top.

以下、この発明の実施の形態を添付図面に従って詳細に説明する。  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

図1は、一実施形態に係るミシンの主要部分を一部断面で示す正面図を示し、該ミシンにおいて上方に設けられる縫いヘッドの図示を便宜上省略し、該ミシンにおいて下方に設けられるミシンテーブル2及び釜土台1に関連する機構を抽出して示すものである。図2は図1のミシンを矢印Aから見た側面図を示し、図3は図1のミシンを矢印Bから見た平面図を示す。このミシンは、1つの縫いヘッドのみを持つ単頭式ミシンであってもよいし、複数の縫いヘッドを持つ多頭式ミシンであってもよい。ミシンの縫いヘッド(不図示)には、縫製対象物(以下、「被縫製物」とも言う)を縫製する針(後述図5の符号50)を備えた針棒(不図示)が設けられており、その縫いヘッドの直下位置に釜土台1が配設される。  FIG. 1 is a front view showing a partial cross section of a main part of a sewing machine according to an embodiment. The illustration of a sewing head provided above the sewing machine is omitted for the sake of convenience, and a sewing machine table 2 provided below the sewing machine. And the mechanism relevant to the pot base 1 is extracted and shown. 2 shows a side view of the sewing machine of FIG. 1 viewed from the arrow A, and FIG. 3 shows a plan view of the sewing machine of FIG. This sewing machine may be a single-head sewing machine having only one sewing head or a multi-head sewing machine having a plurality of sewing heads. A sewing head (not shown) of the sewing machine is provided with a needle bar (not shown) provided with a needle (reference numeral 50 in FIG. 5 described later) for sewing an object to be sewn (hereinafter also referred to as “sewing object”). The pot base 1 is disposed immediately below the sewing head.

図1〜図3に示すとおり、釜土台1は、ミシンテーブル2の下方に位置する下フレーム3の上面に固定されている。釜土台1の上面には、ミシンテーブル2の上面とほぼ一致するように針板4が固定されており、この針板4の下方に垂直釜5が配置されている。垂直釜5は内釜と外釜とを備え、外釜は釜土台1に回転自在に支持されており、釜土台1に貫通支持された駆動軸6の回転力によって回転するようになっている。内釜は外釜の内部で相対回転自在に嵌装されており、釜土台1に取り付けられた釜支え7により外釜と共に回転するのを防止するようになっている。これら構造は周知のとおりである。  As shown in FIGS. 1 to 3, the pot base 1 is fixed to the upper surface of the lower frame 3 positioned below the sewing machine table 2. A needle plate 4 is fixed on the upper surface of the pot base 1 so as to substantially coincide with the upper surface of the sewing machine table 2, and a vertical hook 5 is disposed below the needle plate 4. The vertical hook 5 includes an inner hook and an outer hook, and the outer hook is rotatably supported by the pot base 1 and is rotated by the rotational force of the drive shaft 6 that is penetrated and supported by the pot base 1. . The inner hook is fitted in the outer hook so as to be relatively rotatable, and is prevented from rotating together with the outer hook by a hook support 7 attached to the pot base 1. These structures are well known.

本発明のミシンは、針板4に設けられた開口24を通って上下動可能な支持部材19であって、縫製対象物を支持するための上端面22と、上下動する針50の通過を許すように前記上端面22に設けられた針孔23とを含む前記支持部材19と、前記支持部材19の前記上端面22の水平を維持しつつ、該支持部材19を上下動する昇降機構40とを備えることに特徴がある。以下の説明では、支持部材19を、「支持アーム19」と称し、また、上端面22を「布受け面22」と称する。  The sewing machine of the present invention is a support member 19 that can move up and down through an opening 24 provided in the needle plate 4, and passes through an upper end surface 22 for supporting a sewing object and a needle 50 that moves up and down. The support member 19 including the needle hole 23 provided in the upper end surface 22 so as to allow, and the elevating mechanism 40 that moves the support member 19 up and down while maintaining the level of the upper end surface 22 of the support member 19. It is characterized by having. In the following description, the support member 19 is referred to as a “support arm 19”, and the upper end surface 22 is referred to as a “cloth receiving surface 22”.

図4は、支持アーム及び昇降機構の一例を抽出して示す分解斜視図である。釜土台1の右側面には、ロの字状の取付ベース8が固定される。取付ベース8は、前端部8aがミシンの前方に向けて張り出すように、後端部8bにて釜土台1に例えばネジにより固定される。この取付ベース8の前端部8aには鉛直方向に延びる細長形状の支持台9が固定される。支持台9には、鉛直方向に沿って直線状に延びたスライドレール10と、そのスライドレール10に沿って滑走可能な摺動体11とで構成される案内部材12が、例えばネジにより固定されている。摺動体11には、昇降部材13が取り付けられている。  FIG. 4 is an exploded perspective view showing an example of the support arm and the lifting mechanism. A square-shaped mounting base 8 is fixed to the right side surface of the pot base 1. The attachment base 8 is fixed to the pot base 1 with screws, for example, at the rear end portion 8b so that the front end portion 8a projects toward the front of the sewing machine. An elongate support base 9 extending in the vertical direction is fixed to the front end 8a of the mounting base 8. A guide member 12 composed of a slide rail 10 extending linearly along the vertical direction and a slide body 11 slidable along the slide rail 10 is fixed to the support base 9 by screws, for example. Yes. An elevating member 13 is attached to the sliding body 11.

昇降部材13は、全体として鉛直方向に延び、その上端がミシン正面から見て左向きに折れた、略L字型の細長形状を有している。昇降部材13の上端部は、ミシンテーブル2(針板4)に略平行な取付面14となる。他方、昇降部材13の下端は、リンクレバー15を介して駆動レバー16の自由端に連結されている。駆動レバー16は、下フレーム3の前面に固定されたモーター17の出力軸18に固定されており、モーター17の駆動により駆動レバー16を所定角度範囲で往復揺動させることで、昇降部材13がスライドレール10に沿って上下移動する。この実施形態においては、前述した取り付けベース8、支持台9、案内部材12(スライドレール10及び摺動体11)、昇降部材13、リンクレバー15、駆動レバー16、及び、モーター17が、昇降機構40を構成する。  The elevating member 13 has a substantially L-shaped elongated shape that extends in the vertical direction as a whole and has an upper end bent leftward when viewed from the front of the sewing machine. The upper end portion of the elevating member 13 is a mounting surface 14 that is substantially parallel to the sewing machine table 2 (needle plate 4). On the other hand, the lower end of the elevating member 13 is connected to the free end of the drive lever 16 via the link lever 15. The drive lever 16 is fixed to an output shaft 18 of a motor 17 fixed to the front surface of the lower frame 3, and when the motor 17 is driven to reciprocate and swing the drive lever 16 within a predetermined angle range, It moves up and down along the slide rail 10. In this embodiment, the mounting base 8, the support base 9, the guide member 12 (the slide rail 10 and the sliding body 11), the elevating member 13, the link lever 15, the drive lever 16, and the motor 17 are the elevating mechanism 40. Configure.

昇降部材13の上端の取付面14には、ミシンに対して横方向に延びるアーム部材からなる支持アーム19が固定されている。支持アーム19は、その一端(ミシン前面から見て右端)の連結部19aにおいて、ネジ20により取付面14の上面に固定される。すなわち、図1等に示す通り、支持アーム19は、その一端において,昇降機構40(昇降部材13の上端)に片持ち状に取り付けられている。言い換えれば、昇降機構40は、スライドレール10に対して略垂直方向に支持アーム19を支持する。  A support arm 19 made of an arm member extending in the lateral direction with respect to the sewing machine is fixed to the attachment surface 14 at the upper end of the elevating member 13. The support arm 19 is fixed to the upper surface of the mounting surface 14 with a screw 20 at a connecting portion 19a at one end (right end when viewed from the front surface of the sewing machine). That is, as shown in FIG. 1 etc., the support arm 19 is attached to the elevating mechanism 40 (the upper end of the elevating member 13) at one end in a cantilever manner. In other words, the lifting mechanism 40 supports the support arm 19 in a direction substantially perpendicular to the slide rail 10.

支持アーム19は、連結部19aからミシン前面から見て左斜め上方に延びるように延設されたアーム部19bを備え、アーム部19bの水平部19cの先端(ミシン前面から見て左端)には支承部材21を備える。支承部材21は、上方に突出した筒状部からなり、その上面に布受け面22を備える。布受け面22は、被縫製物を支持するための部分であり、ミシンテーブル2(針板4)と略平行面となるように形成される。  The support arm 19 includes an arm portion 19b extending from the coupling portion 19a so as to extend obliquely to the left when viewed from the front surface of the sewing machine, and at the tip of the horizontal portion 19c of the arm portion 19b (the left end when viewed from the front surface of the sewing machine). A support member 21 is provided. The support member 21 is formed of a cylindrical portion protruding upward, and includes a cloth receiving surface 22 on the upper surface thereof. The cloth receiving surface 22 is a portion for supporting the sewing product, and is formed so as to be substantially parallel to the sewing machine table 2 (needle plate 4).

支承部材21の中央には、上下動する針(図5の符号50)の通過を許すように針孔23が設けられている。支持アーム19は、針孔23が針落ち位置に位置するように、昇降機構40に取り付けられている。したがって、針(図5の符号50)は、布受け面22により支持された被縫製物を貫通した際、針孔23を挿通する。  A needle hole 23 is provided in the center of the support member 21 so as to allow passage of a vertically moving needle (reference numeral 50 in FIG. 5). The support arm 19 is attached to the elevating mechanism 40 so that the needle hole 23 is located at the needle drop position. Therefore, the needle (reference numeral 50 in FIG. 5) passes through the needle hole 23 when passing through the workpiece supported by the cloth receiving surface 22.

図3及び図4に示すとおり、針板4には、針落ち位置及び支持アーム19に対応して開口24が設けられている。開口24は、針及び支承部材21が挿通する貫通孔24aと、支持アーム19の形状に沿って切り欠かれた貫通孔24bとが一体的に形成されている。従って、支持アーム19は、針板4に設けられた開口24を通って上下動可能である。また、針板4には、ネジ20の対応個所に逃げ孔25が設けられており、支持アーム19の上昇時に、ネジ20が針板4に当たらないようになっている。  As shown in FIGS. 3 and 4, the needle plate 4 is provided with an opening 24 corresponding to the needle drop position and the support arm 19. In the opening 24, a through hole 24 a through which the needle and the support member 21 are inserted and a through hole 24 b cut out along the shape of the support arm 19 are integrally formed. Therefore, the support arm 19 can move up and down through the opening 24 provided in the needle plate 4. Further, the needle plate 4 is provided with a relief hole 25 at a corresponding position of the screw 20 so that the screw 20 does not hit the needle plate 4 when the support arm 19 is raised.

上記の構成からなる支持アーム19は、昇降部材13の上端に固定されているので、モーター17の駆動による昇降部材13の上下移動に応じて、スライドレール10に沿って直線状に、鉛直方向に上下動する。従って、昇降機構40は、支持アーム19の布受け面22の水平を維持しつつ、該支持アーム19を上下動できる。  Since the support arm 19 having the above-described configuration is fixed to the upper end of the elevating member 13, linearly along the slide rail 10 in the vertical direction according to the vertical movement of the elevating member 13 driven by the motor 17. Move up and down. Therefore, the elevating mechanism 40 can move the support arm 19 up and down while maintaining the level of the cloth receiving surface 22 of the support arm 19.

ミシンは、周知の通り、針棒(不図示)の上下駆動に応じて、該針棒の針(図5の符号50)に付けられた上糸と、その針棒に対応する垂直釜5にセットされた下糸とが絡み合うことにより、被縫製物に対する縫いを行う。被服、バッグ、靴等の製造において、製品本体(基布H)にパーツ(縫着片K)を重ね合わせて縫い付ける場合がある。その場合、前述した図6及び図7に示す型板30が使用される。型板30は、図6及び図7に示す通り、下板27と上板29とからなり、基布Hを下板27の上面に載置し、これを上板29により挟み、そして、その上板29に縫着片Kを嵌入することにより、基布H及び縫着片Kをセットするようになっている。型板30は保持枠により保持され、ミシンの縫製作業面、すなわち、ミシンテーブル2(針板4)の上面の、縫いヘッド下方位置に、配置される。ミシンは、型板30を保持する保持枠を、ステッチングSのパターンを示すパターンデータに基づいて移動させつつ、縫い動作を行うことで、ステッチングSにより縫着片Kを基布Hに縫い付ける。  As is well known, the sewing machine moves the upper thread attached to the needle (reference numeral 50 in FIG. 5) of the needle bar and the vertical hook 5 corresponding to the needle bar in accordance with the vertical drive of the needle bar (not shown). When the set lower thread is intertwined, sewing is performed on the workpiece. In the manufacture of clothing, bags, shoes, etc., parts (sewing pieces K) may be superimposed and sewn on the product body (base fabric H). In that case, the template 30 shown in FIGS. 6 and 7 is used. As shown in FIGS. 6 and 7, the template 30 includes a lower plate 27 and an upper plate 29. The base fabric H is placed on the upper surface of the lower plate 27, and is sandwiched by the upper plate 29. By inserting the sewing piece K into the upper plate 29, the base fabric H and the sewing piece K are set. The template 30 is held by a holding frame and is arranged at a position below the sewing head on the sewing work surface of the sewing machine, that is, the upper surface of the sewing machine table 2 (needle plate 4). The sewing machine sews the sewing piece K to the base fabric H by stitching S by performing a sewing operation while moving the holding frame that holds the template 30 based on the pattern data indicating the pattern of the stitching S. wear.

このような型板30を用いた縫い付けの際、下板27の上面に載置された基布Hは、下板27の厚み分だけ、針板4から浮いた状態となる。このため、型板30を用いた縫い付けを行う際(針が被縫製物を貫通する際)には、支持アーム19の布受け面22により基布Hが下方から支持されるようにする。  At the time of sewing using such a template 30, the base fabric H placed on the upper surface of the lower plate 27 floats from the needle plate 4 by the thickness of the lower plate 27. For this reason, when the sewing using the template 30 is performed (when the needle penetrates the workpiece), the base cloth H is supported from below by the cloth receiving surface 22 of the support arm 19.

図5(a)は、支持アーム19が退避位置まで下げられた状態を示し、図5(b)は、支持アーム19が最上位位置まで上げられた状態を示す。図5(a)、(b)において、符号27は型板30の下板、符号Hは基布、符号29は上板、符号Kは縫着片を示す。図5(a)に示す退避位置において、支持アーム19は、針板4よりも下方に位置している。このとき、支持アーム19は、型板30の下板27との干渉を防ぐため、針板4の上面と支承部材21の布受け面22が面一となる位置まで下降される。  FIG. 5A shows a state where the support arm 19 is lowered to the retracted position, and FIG. 5B shows a state where the support arm 19 is raised to the uppermost position. 5A and 5B, reference numeral 27 denotes a lower plate of the template 30, H denotes a base cloth, 29 denotes an upper plate, and K denotes a sewn piece. In the retracted position shown in FIG. 5A, the support arm 19 is located below the needle plate 4. At this time, the support arm 19 is lowered to a position where the upper surface of the needle plate 4 and the cloth receiving surface 22 of the support member 21 are flush with each other in order to prevent interference with the lower plate 27 of the template 30.

図5(b)の最上位位置において、支持アーム19は針板4の開口24における貫通孔24bに挿通し、また、支承部材21は、貫通孔24aを挿通して針板4の上方に突出する。この状態で、布受け面22は基布Hの裏面に当接し、該基布Hを下方から支持する。  5B, the support arm 19 is inserted into the through hole 24b in the opening 24 of the needle plate 4, and the support member 21 is inserted through the through hole 24a and protrudes above the needle plate 4. As shown in FIG. To do. In this state, the cloth receiving surface 22 abuts on the back surface of the base cloth H and supports the base cloth H from below.

支持アーム19の最上位位置(高さ)は、昇降機構40のストローク制御により、所望の高さに設定できる。支持アーム19の高さの設定は、例えば、ミシンの操作盤(図示外)から行う。一例において、支持アーム19の高さは、一般的な型板(上板、下板)の厚みに合わせて、0mm〜4mmの範囲で設定可能である。図示外の制御系は、操作盤(図示外)から入力された設定値に基づいて、モーター17の駆動レバー16の揺動角度を制御する。駆動レバー16の揺動角度に応じて、スライドレール10上の摺動体11に取り付けられた昇降部材13が上昇することにより、支持アーム19は、設定値に応じた高さに上昇する。これにより、支持アーム19の先端の布受け面22は、任意の設定値に応じた高さで、針板4の上方に突出する。  The uppermost position (height) of the support arm 19 can be set to a desired height by stroke control of the elevating mechanism 40. The height of the support arm 19 is set from, for example, a sewing machine operation panel (not shown). In one example, the height of the support arm 19 can be set in the range of 0 mm to 4 mm in accordance with the thickness of a general template (upper plate, lower plate). A control system (not shown) controls the swing angle of the drive lever 16 of the motor 17 based on a set value input from an operation panel (not shown). As the elevating member 13 attached to the sliding body 11 on the slide rail 10 rises according to the swing angle of the drive lever 16, the support arm 19 rises to a height corresponding to the set value. Thereby, the cloth receiving surface 22 at the tip of the support arm 19 protrudes above the needle plate 4 at a height corresponding to an arbitrary set value.

支持アーム19の上下動は、一例として、針50の昇降に同期して行われる。この場合、支持アーム19は一針ごとに昇降を繰り返す。すなわち、針50が上昇位置にあるとき、図5(a)のように、支持アーム19が退避位置まで下がり、また、針50が下降して縫着片Kに刺さるとき、図5(b)のように、支持アーム19が最上位位置まで上がる。針50が下降位置に下りたとき、針50の先端は、被縫製物(基布H及び縫着片K)を貫き、支持アーム19の針孔23を貫通する。このとき、布受け面22により基布Hの裏面を下方から支持しているので、基布Hが針板4から浮いた状態であっても、針50の貫通抵抗等による基布Hの沈み込み、及び、それに伴う縫着片Kの姿勢ずれ(傾き)等の被縫製物(基布H及び縫着片K)の変位を防止又は抑制し、以って、針落ち位置のずれ、縫いしわ発生、或いは、針50が縫着片Kから滑り落ちること等を防止又は抑制できる。それにより縫い目のずれや目とび等の縫い不良を防止することができる。  As an example, the vertical movement of the support arm 19 is performed in synchronization with the raising and lowering of the needle 50. In this case, the support arm 19 repeats raising and lowering for each needle. That is, when the needle 50 is in the raised position, as shown in FIG. 5A, the support arm 19 is lowered to the retracted position, and when the needle 50 is lowered and stabbed into the sewing piece K, FIG. Thus, the support arm 19 is raised to the uppermost position. When the needle 50 is lowered to the lowered position, the tip of the needle 50 passes through the workpiece (the base cloth H and the sewing piece K) and passes through the needle hole 23 of the support arm 19. At this time, since the back surface of the base fabric H is supported by the fabric receiving surface 22 from below, the base fabric H sinks due to the penetration resistance of the needle 50 or the like even when the base fabric H is floating from the needle plate 4. And the displacement of the sewing product (base fabric H and sewing piece K) such as the posture deviation (inclination) of the sewing piece K associated with it is prevented or suppressed. Generation | occurrence | production of a wrinkle or the needle | hook 50 slipping off from the sewing piece K etc. can be prevented or suppressed. As a result, it is possible to prevent seam defects such as seam slippage and stitch skipping.

別の例として、支持アーム19の昇降を針50の昇降に同期させず、支持アーム19を図5(b)の最上位位置に上昇させたまま、縫い動作が行われるようにしてもよい。例えば、縫着片Kの縁部に沿ってステッチングSを施す場合、支持アーム19を最上位位置に上昇させたまま縫い付け動作を行うとよい。この場合、ミシンは、縫い付け動作中、支持アーム19を図5(b)の最上位位置に上昇させたまま、パターンデータに基づいて型板30を移動させつつ、被縫製物(基布H及び縫着片K)にステッチングSを施す。なお、縫い動作中に型板30が支承部材21に干渉するときは、その都度、支持アーム19を退避位置に下降させればよい。  As another example, the sewing operation may be performed while raising and lowering the support arm 19 is not synchronized with the raising and lowering of the needle 50 and the support arm 19 is raised to the uppermost position in FIG. For example, when the stitching S is performed along the edge of the sewing piece K, the sewing operation may be performed while the support arm 19 is raised to the uppermost position. In this case, during the sewing operation, the sewing machine moves the template 30 based on the pattern data while raising the support arm 19 to the uppermost position in FIG. And stitching S on the sewn piece K). When the template 30 interferes with the support member 21 during the sewing operation, the support arm 19 may be lowered to the retracted position each time.

以上説明した実施形態によれば、昇降機構40により支持アーム19の布受け面22の水平を維持しつつ、該支持アーム19を上下動するので、支持アーム19をどのような高さへ移動しても、その移動によって、針落ち位置と針孔23がずれることはなく、また、支持アーム19は適切な姿勢で被縫製物を支持し、以って、被縫製物の変位を防止又は抑制できる。従って、例えば、型板30を用いる縫い付けにおいて、様々な厚さの型板に応じた所望の高さに、支持アーム19の高さを変更することができる。従って、この発明は、型板30を用いる縫い付けに好適である。  According to the embodiment described above, the support arm 19 is moved up and down while the cloth receiving surface 22 of the support arm 19 is maintained horizontal by the elevating mechanism 40, so that the support arm 19 is moved to any height. However, the needle drop position and the needle hole 23 are not shifted by the movement, and the support arm 19 supports the sewing product in an appropriate posture, thereby preventing or suppressing the displacement of the sewing product. it can. Therefore, for example, in the sewing using the template 30, the height of the support arm 19 can be changed to a desired height corresponding to the template having various thicknesses. Therefore, the present invention is suitable for sewing using the template 30.

また、昇降機構40に支持アーム19を片持ち状に取り付ける構成により、昇降機構40を釜土台1内の側方(図1では右側側面)に配置することが可能となる。このため、支持アーム19及び昇降機構40は、垂直釜5の正面の障害とならない。従って、この実施形態のミシンは、支持アーム19及び昇降機構40を備える構成であっても、垂直釜5からボビンを脱着する周知のボビン交換機構等を設けることが可能である。また、昇降機構40のスライドレール10により支持アーム19を鉛直方向に上下動する構成は、横方向にサイズが大きくならない。従って、実施例に示す支持アーム19及び昇降機構40の構成は、複数の縫いヘッドを並設する多頭式ミシンにも好適である。  Further, the structure in which the support arm 19 is attached to the lifting mechanism 40 in a cantilevered manner enables the lifting mechanism 40 to be disposed on the side (the right side surface in FIG. 1) in the pot base 1. For this reason, the support arm 19 and the elevating mechanism 40 do not obstruct the front of the vertical shuttle 5. Therefore, even if the sewing machine of this embodiment is configured to include the support arm 19 and the lifting mechanism 40, it is possible to provide a well-known bobbin replacement mechanism that detaches the bobbin from the vertical shuttle 5. Further, the configuration in which the support arm 19 is moved up and down in the vertical direction by the slide rail 10 of the elevating mechanism 40 does not increase in size in the lateral direction. Therefore, the configuration of the support arm 19 and the lifting mechanism 40 shown in the embodiment is also suitable for a multi-head sewing machine in which a plurality of sewing heads are arranged in parallel.

この発明は、前記の実施形態に限定されるものではなく、特許請求の範囲、及び明細書と図面に記載された技術的思想の範囲内において種々の変形が可能である。例えば、支持アーム19は、針板4に設けられた開口24を通って上下動可能であって、縫製対象物を支持するための布受け面22と、上下動する針50の通過を許すように該布受け面22に設けられた針孔23とを含むものであれば、どのような形状、及び、構造でもよい。また、昇降機構40は、スライドレール10からなる機構に限らず、ラック・ピニオン機構、ベルト、或いは、チェーンなど、支持アーム19の布受け面22の水平を維持しつつ、該支持アーム19を上下動できる機構であれば、どのような機構でもよい。更には、例えば、案内部材12(スライドレール10及び摺動体11)部分が電気式リニアモーターで構成されてもよい。その場合、昇降機構40の構造を、より一層簡素化することができる。また、昇降機構40による支持アーム19の上下動の向きは、布受け面22の水平を維持するのであれば、鉛直方向に限らない。例えば、スライドレール10を鉛直方向に対して斜めに傾けて配置し、そのスライドレール10に沿って、支持アーム19を上下動させてもよい。また、ミシンの行う縫製は、型板30を用いた縫製に限定されない。本発明に係る縫いミシンとは、通常の縫いミシンに限らず、刺繍ミシン及びその他の特殊縫いミシンもその範囲に含む。  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. For example, the support arm 19 can move up and down through an opening 24 provided in the needle plate 4 and allows the cloth receiving surface 22 for supporting the sewing object and the needle 50 moving up and down to pass therethrough. As long as it includes the needle hole 23 provided on the cloth receiving surface 22, any shape and structure may be used. The elevating mechanism 40 is not limited to the mechanism composed of the slide rail 10, and the support arm 19 is moved up and down while maintaining the level of the cloth receiving surface 22 of the support arm 19 such as a rack and pinion mechanism, a belt, or a chain. Any mechanism may be used as long as it can move. Furthermore, for example, the guide member 12 (slide rail 10 and sliding body 11) portion may be formed of an electric linear motor. In that case, the structure of the lifting mechanism 40 can be further simplified. Further, the direction of the vertical movement of the support arm 19 by the lifting mechanism 40 is not limited to the vertical direction as long as the cloth receiving surface 22 is kept horizontal. For example, the slide rail 10 may be disposed obliquely with respect to the vertical direction, and the support arm 19 may be moved up and down along the slide rail 10. Further, the sewing performed by the sewing machine is not limited to the sewing using the template 30. The sewing machine according to the present invention is not limited to a normal sewing machine, but includes an embroidery machine and other special sewing machines within the scope thereof.

Claims (4)

針板に設けられた開口を通って上下動可能な支持部材であって、縫製対象物を支持するための上端面と、上下動する針の通過を許すように前記上端面に設けられた針孔とを含む前記支持部材と、
前記支持部材の前記上端面の水平を維持しつつ、該支持部材を上下動する昇降機構
を備えるミシン。
A support member capable of moving up and down through an opening provided in a needle plate, and an upper end surface for supporting an object to be sewn and a needle provided on the upper end surface so as to allow the needle to move up and down. The support member including a hole;
A sewing machine comprising an elevating mechanism that moves the support member up and down while maintaining the level of the upper end surface of the support member.
前記支持部材は、ミシンに対して横方向に延びるアーム部材からなり、該アーム部材の一端において前記昇降機構に片持ち状に取り付けられ、前記アーム部材の他端において前記上端面及び前記針孔を有する、請求項1に記載のミシン。  The support member includes an arm member extending in a lateral direction with respect to the sewing machine, and is attached to the lifting mechanism at one end of the arm member in a cantilever manner, and the upper end surface and the needle hole are formed at the other end of the arm member. The sewing machine according to claim 1, comprising: 前記昇降機構は、直線状に延びたスライドレールを含み、前記支持部材を該スライドレールに対して略垂直方向に支持し、且つ、該支持部材を前記スライドレールに沿って上下動する、請求項1又は2に記載のミシン。  The elevating mechanism includes a slide rail that extends linearly, supports the support member in a direction substantially perpendicular to the slide rail, and moves the support member up and down along the slide rail. The sewing machine according to 1 or 2. 前記支持部材の最上位位置を可変設定できる、請求項1乃至3の何れかに記載のミシン。  The sewing machine according to claim 1, wherein an uppermost position of the support member can be variably set.
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JPH0716365A (en) * 1993-06-30 1995-01-20 Pegasus Sewing Mach Mfg Co Ltd Throat plate of two-needle chain stitch sewing machine
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