JPH0135726Y2 - - Google Patents

Description

【考案の詳細な説明】 産業上の利用分野 本考案は、地縫いしたテープを強制的に折り返
しして玉縁縫いの連続縫製を可能にする玉縁縫い
ミシンに関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a welt stitch sewing machine that forcibly folds back a plain stitched tape to enable continuous welt stitch sewing.

従来の技術 ミシンには家庭用、工業用があり、おもな各部
はアーム、ベツド等ミシンの外観に現れる主体関
係と、はずみ車、上軸、てんびん等の駆動装置よ
りなる上軸関係と、上糸の調整を行う糸調子装置
や針棒、押さえ棒等よりなる糸経路関係と、大が
ま、中がま、ボビンケース、ボビンよりなるかま
関係と、クランクロツド、ふたまたロツド、水平
送り軸、上下送り軸、送り歯等よりなる送り関係
の各部品で構成されている。この構成の内、送り
歯は、針Ｃの上下動に連動して前後と上下に振揺
しながら布を送り１目づつ連続して縫つて行く。Conventional technology There are two types of sewing machines: household and industrial, and the main parts are the arm, bed, etc., which appear on the exterior of the sewing machine, and the upper shaft, which consists of drive devices such as the flywheel, upper shaft, and balance. The thread path consists of the thread tension device, needle bar, presser bar, etc. that adjusts the upper thread; the hook consists of the large hook, inner hook, bobbin case, and bobbin; the crank rod, the lid rod, and the horizontal feed shaft. , vertical feed shaft, feed teeth, and other feed-related parts. In this configuration, the feed dog oscillates back and forth and up and down in conjunction with the up and down movement of the needle C, while feeding the fabric and sewing continuously one stitch at a time.

考案が解決しようとする問題点 しかしながら、家庭用や工業用ミシンで生地の
縁端に地縫いされたテープ１７を折り曲げて玉縁
縫いをする場合は、指先で折り曲げて形を正確に
整えて送りながら縫い進んで行く。一方生地の縁
端を折り曲げて縫製する各種の部品が考案されて
いるが、いずれも指先で生地を部品に誘導しなけ
れば正確な形の玉縁縫いができず、これらの生地
送りには形を整えた部品を継続的に縫い進んで行
くので、高度な熟練を要する上に、長時間の縫製
作業では体の疲労が激しいのが実状である。Problems to be Solved by the Invention However, when using a home or industrial sewing machine to fold and welt the tape 17 that has been plain stitched to the edge of the fabric, it is necessary to fold it with your fingertips and adjust the shape accurately before feeding. I keep sewing as I go. On the other hand, various parts have been devised in which the edges of the fabric are folded and sewn, but in each case, it is not possible to sew the welts in an accurate shape unless the fabric is guided to the part with the fingertips. Since the parts are sewn in a continuous manner, a high level of skill is required, and long hours of sewing work can cause severe physical fatigue.

本考案は上記の点に鑑がみなされたもので、玉
縁縫いの折り曲げ作業が自動的にできるガイド
と、折り曲げたテープの左送り機構を、押さえ金
の前方で連動させた専用ミシンを提供することを
目的とする。 This invention was developed in consideration of the above points, and provides a special sewing machine in which a guide that can automatically perform the folding work for welt stitching and a mechanism for feeding the folded tape to the left are linked in front of the presser foot. The purpose is to

問題点を解決するための手段 上記の目的を達成するための本考案の要旨とす
るところは、押さえ金１５の前方右側で、玉縁縫
いのための地縫い折り返し押さえを可能にするよ
うに縁端ガイド１１と、すべり板Ｆに固定した折
り返しガイド１３の先端を針Ｃの前方に配設する
と共に、前後送り歯Ｅと連動して押さえ金１５の
前方で左右方向に上下振動可能な左送り歯１０の
振揺機構をベツド下面に設けたことを特徴とする
玉縁縫いミシンにある。Means for Solving the Problems The gist of the present invention to achieve the above object is that the front right side of the presser foot 15 is provided with an edge so as to enable back-stitch folding press for welting. The ends of the end guide 11 and the folding guide 13 fixed to the sliding plate F are arranged in front of the needle C, and a left feed is provided that can vibrate vertically in the left and right direction in front of the presser foot 15 in conjunction with the front and rear feed dog E. This welt stitch sewing machine is characterized in that a swinging mechanism for teeth 10 is provided on the bottom surface of the bed.

作 用 以上のように構成されているので、地縫いされ
たテープ１７を生地の下へ折り曲げて縁端ガイド
１１に当てながら押させ金Ｄで押さえ、折り返し
ガイド１３の先端を生地と折り曲げたテープ１７
の間に差し込んで左送り歯１０の正確な折り曲げ
状態を整形すると同時に、折り返しガイド１３で
縫製前の形状を崩さないように押さえ、前後送り
歯１５で生地を１目づつ送りながら針Ｃで連続に
して縫い進んで行く。Function Since the structure is as described above, the ground-stitched tape 17 is folded under the fabric, and while it is applied to the edge guide 11, it is pressed with the pusher D, and the tip of the folding guide 13 is folded against the fabric. 17
Insert it between the left feed dog 10 to form the correct folded state, and at the same time press it with the folding guide 13 so as not to disturb the shape before sewing, feed the fabric one stitch at a time with the front and rear feed dogs 15, and continue with the needle C. Then proceed with sewing.

実施例 以下、本考案の実施例を図面に基づいて説明す
る。Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

第１図は本考案ミシンの左送り歯１０の振揺機
構斜視図、第１ａ図は針板の斜視図、第２図は左
送り歯振揺機構の側面図、第３図は左送り歯振揺
機構平面図、第４図は縁端ガイド斜視図、第５図
は折り返しガイド斜視図、第６図は押さえ金裏面
斜視図、第７図、第８図、第９図は左送り歯機構
の振揺状態側面図、第１０図は玉縁縫いの縫製状
態斜視図を示す。 Fig. 1 is a perspective view of the swing mechanism for the left feed dog 10 of the sewing machine of the present invention, Fig. 1a is a perspective view of the throat plate, Fig. 2 is a side view of the left feed dog swing mechanism, and Fig. 3 is the left feed dog swing mechanism. A plan view of the shaking mechanism, Fig. 4 is a perspective view of the edge guide, Fig. 5 is a perspective view of the folding guide, Fig. 6 is a perspective view of the back of the presser foot, and Figs. 7, 8, and 9 are the left feed dog. FIG. 10 is a side view of the mechanism in a swinging state, and a perspective view of the welt sewing state.

Ａは下軸、Ｂは針棒、Ｄは針、Ｄは押さえ棒、
Ｅは前後送り歯、Eaは前後送り歯溝、Ｆはすべ
り板で従来のミシン部品である。 A is the lower shaft, B is the needle bar, D is the needle, D is the presser bar,
E is the front and rear feed dog, Ea is the front and rear feed dog groove, and F is the sliding plate, which are conventional sewing machine parts.

１はヘリカルギヤーで、下軸Ａに嵌装固定され
た針歯歯車とクランク軸２に嵌装固定された斜歯
歯車よりなり、回転を直角方向に変換する歯車
で、針Ｃと前後送り歯Ｅの作動に連動する減束比
を有させると共に、偏心器を内在させる。２はク
ランク軸で、ヘリカルギヤー１に一方を嵌入し、
他方端の一部を角軸にして突出差せた状態でベツ
ド裏面のフランジに軸着する。３は偏心器でヘリ
カルギヤー１に組み込まれた偏心器の内板に設け
た軸である。４は外輪で、ヘリカルギヤー１に組
み込んだ偏心器の内板に設けた偏心軸に、軸の回
転が可能に装着する。５は左送りロツドで、一方
を偏心器の外論に固着し、他方を振揺カム６に固
着する。６は振揺カムで、一方に左送りロツド５
を固着し、上面に左送り歯１０を着脱自在にビス
式めすると共に、振揺カム６体に貫通したカム軸
８を摺動する面を有するカム溝７を設ける。８は
カム軸で、カム溝７内で接触し振揺カム６が摺動
する面を有し、偏心機構を介在して一方にカム軸
高さ調整環９を装着すると共にベツド裏面に突出
するフランジに軸着する。９はカム軸高さ調整環
で、偏心機構を操作して左送り歯の高さ調節を可
能に形成する。１０は左送り歯で、基部は振揺カ
ム６にビス止めを可能にし、先端は前後送り歯Ｅ
と同様か、又は角錐形の歯を上向に整列状態に立
設させる。左送り歯１０の歯先は針Ｃの前方で上
下、左右に振揺運動し、針板１２の上面では右よ
り左へ移行する時に現れるように各部を配設す
る。１１は縁端ガイドで、テープ１７を折り返し
た玉縁端が当接する面を有させ、左右位置調整溝
を有させ、針板１２の上面で針Ｃの右方に近接さ
せて針板１２に取り付ける。１２は針板で、前後
送り歯Ｅと左送り歯１０が上面に表れる前後送り
歯溝Eaと左送り歯溝１０ａを穿設すると共に、
左送り歯溝１０ａの前方にテープ１７の折り返し
部が通過可能な折り返し間隙１４を刻設してベツ
ドに固定する。１３は折り返しガイドで、先端を
針Ｃの前方で縁端ガイド１１の側面に近接させ、
縁端ガイド１１より左送り歯１０の上面に至る斜
面の刃を形成し、先端でテープ１７を下方で押さ
え、左送り歯１０の上下動に対応して追従する弾
力性の有ある素材で形成し、ベツド上面のすべり
板Ｆ上に固定する。１５は押さえ金で、縁端ガイ
ド１１が針Ｃ孔に接近できるガイド切り込み部１
６を設けると共に裏面に縫製作業に適合した玉縁
端の当接面を有する起伏面を有させ、押させ金Ｄ
に取り付けを可能にする。 1 is a helical gear, which consists of a needle gear fitted and fixed on the lower shaft A and a helical gear fitted and fixed on the crankshaft 2. It is a gear that converts rotation in the right angle direction, and has a needle C and a front and rear feed dog. It has a flux reduction ratio that is linked to the operation of E, and an eccentric is included. 2 is the crankshaft, one of which is inserted into the helical gear 1,
A part of the other end is made into a square shaft and is attached to the flange on the back of the bed with the shaft sticking out. Reference numeral 3 denotes an eccentric, which is a shaft provided on the inner plate of the eccentric incorporated in the helical gear 1. Reference numeral 4 denotes an outer ring, which is mounted on an eccentric shaft provided on the inner plate of an eccentric incorporated in the helical gear 1 so that the shaft can rotate. Reference numeral 5 designates a left-hand feed rod, one of which is fixed to the outer ring of the eccentric, and the other to the swinging cam 6. 6 is the shaking cam, and the left feed rod 5 is on one side.
A left feed dog 10 is removably screwed onto the upper surface thereof, and a cam groove 7 having a surface on which a cam shaft 8 passing through the oscillating cam 6 slides is provided. Reference numeral 8 denotes a camshaft, which has a surface that contacts within the cam groove 7 and on which the oscillating cam 6 slides, and a camshaft height adjustment ring 9 is mounted on one side through an eccentric mechanism, and protrudes from the back surface of the bed. Attaches to the flange. Reference numeral 9 denotes a camshaft height adjustment ring, which is formed so that the height of the left feed dog can be adjusted by operating the eccentric mechanism. 10 is the left feed dog, the base can be screwed to the shaking cam 6, and the tip is the front and rear feed dog E.
Similar to the above, or pyramid-shaped teeth are arranged vertically in an upwardly aligned manner. The tip of the left feed dog 10 swings up and down and left and right in front of the needle C, and each part is arranged on the upper surface of the throat plate 12 so that it appears when moving from right to left. Reference numeral 11 denotes an edge guide, which has a surface on which the beaded edge of the folded tape 17 comes into contact, has a left-right position adjustment groove, and is placed close to the right side of needle C on the upper surface of the throat plate 12. Attach. Reference numeral 12 denotes a throat plate, which is provided with a front and rear feed dog groove Ea and a left feed dog groove 10a in which the front and rear feed dog E and the left feed dog 10 appear on the upper surface;
A folding gap 14 through which the folded part of the tape 17 can pass is cut in front of the left feed dog groove 10a and is fixed to the bed. 13 is a folded guide whose tip is placed in front of the needle C and close to the side of the edge guide 11;
A sloped blade extending from the edge guide 11 to the upper surface of the left feed dog 10 is formed, and the tip presses the tape 17 downward, and is made of a resilient material that follows the vertical movement of the left feed dog 10. and fix it on the sliding plate F on the top of the bed. Reference numeral 15 denotes a presser foot, which has a guide notch 1 through which the edge guide 11 can access the needle C hole.
6 is provided, and the back side has an undulating surface with a contact surface of the welt edge suitable for sewing work, and a pressing metal D is provided.
to enable installation.

本考案の実施例は全回転方式の工業用ミシンに
摘要して下軸Ａよりヘリカルギヤー１で動力を取
り出すようにしたが、半回転運動をする家庭用ミ
シンの下軸Ａからでは、クランクや振動カム等を
利用したものでもよく、左送り歯１０が振揺を可
能にする機構であれば特に限定されない。 In the embodiment of the present invention, power is extracted from the lower shaft A by the helical gear 1 for a full-rotation industrial sewing machine. A mechanism using a vibration cam or the like may be used, and there is no particular limitation as long as the left feed dog 10 is a mechanism that allows vibration.

本考案で例示した実施例においての各部は次の
ように作動する。下軸Ａの回転がヘリカルギヤー
１で直角方向に変換されて回転し、クランプ軸２
に軸着されたヘリカルギヤー１内の偏心器で左送
りロツド５が振揺カム６、左送り歯１０を左右に
往復運動させる。振揺カム６のカム溝７はカム軸
８に接触して摺動し、ヘリカルギヤー１内の偏心
器の振揺によつてカム軸８を支点として左送り歯
１０が左右と上下に振揺運動する。（第７図、第
８図、第９図参照）したがつて、左送り歯でテー
プ１７を整形した直後に針Ｃが下降して縫つた後
に上昇し、前後送り歯Ｅがテープ１７と生地を１
目分前方におくる。このように、左送り歯１０と
前後送り歯Ｅの振揺運動で縁端ガイド１１の側面
と折り返しガイド１３の下面に挿入されたテープ
１７は折り返し間隙１４を通過しながら強制的に
形を整えて針Ｃで連続的に縫製される。 Each part in the embodiment illustrated in the present invention operates as follows. The rotation of the lower shaft A is converted to the right angle direction by the helical gear 1 and rotates, and the clamp shaft 2
The left feed rod 5 causes the swinging cam 6 and the left feed dog 10 to reciprocate from side to side by an eccentric in the helical gear 1 which is pivotally connected to the left feed rod 5. The cam groove 7 of the oscillating cam 6 slides in contact with the camshaft 8, and by the oscillation of the eccentric in the helical gear 1, the left feed dog 10 oscillates left and right and up and down with the camshaft 8 as a fulcrum. Exercise. (See Figures 7, 8, and 9) Therefore, immediately after shaping the tape 17 with the left feed dog, the needle C descends and rises after sewing, and the front and rear feed dogs E move the tape 17 and the fabric. 1
Place it in front of you. In this way, the tape 17 inserted into the side surface of the edge guide 11 and the lower surface of the folding guide 13 is forcibly shaped while passing through the folding gap 14 by the shaking motion of the left feed dog 10 and the front and rear feed dogs E. It is then sewn continuously with needle C.

本考案のミシンで通常の直線縫いをする場合に
は、押さえ金１５、前後送り歯Ｅ、左送り歯１
０、針板１２、縁端ガイド１１、折り返しガイド
１３を取り外し、通常の前後送り歯、針板、押さ
せ金に取り替えることにより通常の一本針本縫ミ
シンとなる。 When sewing a normal straight line with the sewing machine of this invention, presser foot 15, front and rear feed dog E, left feed dog 1
0. By removing the throat plate 12, edge guide 11, and folding guide 13 and replacing them with normal front and rear feed dogs, throat plate, and presser bar, it becomes a normal single-needle lockstitch sewing machine.

考案の効果 以上説明してきた如く、本考案の玉縁縫いミシ
ンの折り返しガイド１３と縁端ガイド１１と押さ
え金１５にテープ１７の初期挿入をし、ミシンを
運転すれば振揺運動をする前後送り歯Ｅと左送り
歯１０と針Ｃで玉縁の形が自然に整えるために、
軽くテープ１７を折り返して送るだけでよく、継
続した作業でなくなるので作業能率が向上し、未
熟練者でも商品価値の高い玉縁縫いが可能となる
と共に、指先を駆使する作業が無くなるので、長
時間にわたる縫製作業であつても体の疲労が少な
くなる。Effects of the Invention As explained above, when the tape 17 is initially inserted into the folding guide 13, edge guide 11, and presser foot 15 of the welt stitch sewing machine of the present invention, and the sewing machine is operated, the back and forth feed is performed with a shaking motion. To adjust the shape of the bead naturally with tooth E, left feed dog 10, and needle C,
All you have to do is fold the tape 17 back and feed it, which eliminates the need for continuous work, improving work efficiency, allowing even unskilled workers to sew welts with high commercial value, and eliminating the need to use the fingertips to sew long stitches. Even if the sewing work takes a long time, physical fatigue is reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案ミシンの左送り歯１０の振揺機
構斜視図、第１ａ図は針板の斜視図、第２図は左
送り歯振揺機構の側面図、第３図は左送り振揺機
構平面図、第４図は縁端ガイド斜視図、第５図は
折り返しガイド斜視図、第６図は押さえ金裏面斜
視図、第７図、第８図、第９図は左送り歯機構の
振揺状態側面図、第１０図は玉縁縫いの縫製状態
の斜視図を示す。 Ａ……下軸、２……針棒、Ｃ……針、Ｄ……押
さえ棒、Ｅ……前後送り歯、Ea……前後送り歯
溝、Ｆ……すべり板、１……ヘリカルギヤー、２
……クランク軸、３……偏心軸、４……外輪、５
……左送りロツド、６……振揺カム、８……カム
軸、９……カム軸高さ調整環、１０……左送り
歯、１０ａ……左送り歯溝、１１……縁端ガイ
ド、１２……針板、１３……折り返しガイド、１
４……折り返し間隙、１５……押さえ金、１６…
…ガイド切込部、１７……テープ。 Fig. 1 is a perspective view of the swinging mechanism of the left feed dog 10 of the sewing machine of the present invention, Fig. 1a is a perspective view of the throat plate, Fig. 2 is a side view of the left feed dog swing mechanism, and Fig. 3 is a left feed swing mechanism. A plan view of the rocking mechanism, FIG. 4 is a perspective view of the edge guide, FIG. 5 is a perspective view of the folding guide, FIG. 6 is a perspective view of the back of the presser foot, and FIGS. 7, 8, and 9 are the left feed dog mechanism. Fig. 10 shows a side view in a shaking state, and Fig. 10 shows a perspective view in a welt sewing state. A...lower shaft, 2...needle bar, C...needle, D...presser bar, E...front and rear feed dog, Ea...front and rear feed dog groove, F...sliding plate, 1...helical gear, 2
... Crankshaft, 3 ... Eccentric shaft, 4 ... Outer ring, 5
... Left feed rod, 6 ... Swinging cam, 8 ... Cam shaft, 9 ... Cam shaft height adjustment ring, 10 ... Left feed dog, 10a ... Left feed dog groove, 11 ... Edge guide , 12... Throat plate, 13... Folding guide, 1
4... Folding gap, 15... Presser foot, 16...
...Guide notch, 17...tape.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 上軸関係、糸経路関係、かま関係、送り関係
と、アームやミシンの外観に現れる部品よりなる
ミシン機構において、前後送り関係部品に加え
て、押さえ金１５の前方右側で、玉縁縫いのため
の地縫い折り返し押さえを可能にするように縁端
ガイド１１と、すべり板Ｆに固定した折り返しガ
イド１３の先端を針Ｃの前方に配設すると共に、
前後送り歯Ｅと連動して押さえ金１５の前方で左
右方向に上下振動可能な左送り歯１０の振揺機構
をベツド下面に設けたことを特徴とする玉縁縫い
ミシン。 In the sewing machine mechanism, which consists of parts related to the upper shaft, thread path, hook, feed, and parts that appear on the arm and the appearance of the sewing machine, in addition to the front and rear feed related parts, there is a part on the front right side of the presser foot 15 for welt stitching. The edges of the edge guide 11 and the folding guide 13 fixed to the sliding plate F are arranged in front of the needle C so as to enable folding and pressing of the plain seam,
This welt stitch sewing machine is characterized in that a swinging mechanism for a left feed dog 10 that can vibrate vertically in the left and right direction in front of a presser foot 15 in conjunction with a front and rear feed dog E is provided on the underside of the bed.