JPH01308589A - Two needle sewing machine with one needle stopping function - Google Patents
Two needle sewing machine with one needle stopping functionInfo
- Publication number
- JPH01308589A JPH01308589A JP13915888A JP13915888A JPH01308589A JP H01308589 A JPH01308589 A JP H01308589A JP 13915888 A JP13915888 A JP 13915888A JP 13915888 A JP13915888 A JP 13915888A JP H01308589 A JPH01308589 A JP H01308589A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- needle bar
- bar
- sewing
- stitches
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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- Sewing Machines And Sewing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は自動縫製技術に係る片針停止機能付き二重針ミ
シンに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a double-needle sewing machine with a single-needle stop function related to automatic sewing technology.
［従来の技術］
従来より片針を停止することができるようにした二本針
ミシンが使用されており、この種の片針停止装置は、そ
れぞれミシン針を取り付けて並設した一対の針棒を、駆
動機構によって往復動する針抱き部材に対してそれぞれ
軸方向摺動自在に軸設し、該両針棒の後端からそれぞれ
挿通した針停止棒の軸方向の相対位置変位によって、上
記針棒と針抱き部材を釈放又は拘束する連結手段を備え
ており、各針棒の後端から突出した針棒止棒を、該両針
棒の後退時に当突する位置を横方向から変位干渉する針
停止変換揺動部材を設けると共に、該針停止変換揺動部
材を梃子機構等を介して選択的に一方の針棒後端位置に
移動させ、所望側の片針停止を行っている。[Prior Art] Conventionally, double-needle sewing machines that can stop one needle have been used, and this type of single-needle stopping device consists of a pair of needle bars arranged side by side, each with a sewing machine needle attached to it. are installed to be slidable in the axial direction with respect to the needle holding member reciprocated by a drive mechanism, and the needles are moved by the relative positional displacement in the axial direction of the needle stop bars inserted from the rear ends of the two needle bars. A connecting means is provided for releasing or restraining the rod and the needle holding member, and the needle bar stop bar protruding from the rear end of each needle bar is laterally displaced and interfered with at the position where the needle bars collide when the two needle bars are retracted. A needle stop converting swing member is provided, and the needle stop converting swing member is selectively moved to one needle bar rear end position via a lever mechanism or the like to stop one needle on the desired side.
上記従来の構成では、該針停止変換揺動部材を選択的に
一方の針棒後端位置に移動させることにより所望側の片
針停止を行っているが、停止または停止Ｆ解除操作を行
った場合、針棒が途中位置では操作が実行されないよう
になっているため、例えば、二木針で角縫いを実施する
場合に、停止を解除したい針の初め位置と連続縫製側の
針の位置が一致しない場合には、核部の縫製ムラを作業
者の技術によって調整しなければならず、縫製作業を困
難にするとともに、自動化を停滞させるものであった。In the conventional configuration described above, one needle is stopped on the desired side by selectively moving the needle stop conversion swinging member to the rear end position of one needle bar, but when a stop or stop F release operation is performed. In this case, the operation is not executed when the needle bar is in the middle position, so for example, when performing corner stitching with a double needle, the initial position of the needle where you want to release the stop and the position of the needle on the continuous sewing side are If they do not match, the sewing unevenness at the core must be adjusted by the skill of the operator, which makes the sewing work difficult and slows down automation.
本発明は上記問題に鑑みてなされたものであり、角縫い
において、ａ製側と停止側の針数誤差に関係なく、自動
的または半自動的に停止側の針棒を縫製可能な状態に復
帰するようになる片針停止機能付き二本針ミシンを提供
することを目的とするものである。The present invention has been made in view of the above problem, and is capable of automatically or semi-automatically returning the needle bar on the stopped side to a state in which sewing is possible, regardless of the error in the number of stitches on the A side and the stopped side in corner sewing. The object of the present invention is to provide a two-needle sewing machine with a single-needle stop function.
即ち本発明に係る片針停止機能付き二本針ミシンは、並
設した針棒の下端にそれぞれミシン針を取り付けると共
に、該両針棒を駆動機構によって往復動する針抱き部材
に対してそれぞれ軸方向摺動自在に軸設し、該両針棒と
針抱き部材間にロック機構を構成すると共に、該ロック
機構を解除操作して片針停止する機能を備えた二本針ミ
シンにおいて、上記針棒の両ロック機構をそれぞれ適宜
アクチュエータによって独立して解除する構造にすると
共に、該アクチュエータを中央制御回路によって制御駆
動し１片針縫製開始から布押え操作時までの針数を基準
として、該布押え操作後の針数が予め中央制御回路にセ
ットした縫製誤差を考慮した針数を減算した針数に達し
たとき、アクチュエータを作動して停止側の針棒を復帰
駆動することを要旨とするものである。That is, in the twin-needle sewing machine with a single-needle stop function according to the present invention, sewing machine needles are attached to the lower ends of the needle bars arranged in parallel, and the two needle bars are each pivoted relative to the needle holding member that is reciprocated by a drive mechanism. In a two-needle sewing machine, the needle is installed on a shaft so as to be slidable in a direction, and has a locking mechanism between the two needle bars and the needle holding member, and has a function of stopping one needle by releasing the locking mechanism. Both locking mechanisms of the bar are designed to be released independently by appropriate actuators, and the actuators are controlled and driven by a central control circuit to adjust the number of stitches from the start of one-needle sewing to the time of presser foot operation as a reference. When the number of stitches after presser foot operation reaches the number of stitches after subtracting the number of stitches that takes into account sewing errors, which is preset in the central control circuit, the actuator is activated to drive the stopped needle bar back. It is something.
また、中央制御回路により片針縫製開始から布押え操作
時までの計数をカウントし、該布押え操作後の計数がそ
のカウント数と同数に達したとき。Further, when the central control circuit counts the number from the start of single-needle sewing to the time of operating the presser foot, and the count after operating the presser foot reaches the same number as the counted number.
中央制御回路によりアクチュエータを介して針棒のロッ
ク機構を解除し、停止側の針棒を復帰駆動する自動復帰
制御を実施することも可能にするものである。It is also possible to perform automatic return control in which the central control circuit releases the needle bar locking mechanism via the actuator and drives the stopped needle bar to return.
従って、片針縫製開始から布押え操作時までの針数を基
準として、該布押え操作後の針数が予め中央制御回路に
セットした縫製誤差を考慮した計数を減算した針数に達
したとき、停止側の針棒を復帰駆動するように制御駆動
するため、角縫い時の縫製側と停止側の針数誤差に関係
なく、自動的または半自動的に停止側の針棒を縫製可能
な状態に復帰するように常時待機している。Therefore, based on the number of stitches from the start of single-needle sewing to the time of presser foot operation, when the number of stitches after the presser foot operation reaches the number of stitches after subtracting the count that takes into account the sewing error set in advance in the central control circuit. Since the needle bar on the stopped side is controlled and driven to return, the needle bar on the stopped side can automatically or semi-automatically sew regardless of the difference in the number of stitches between the sewing side and the stopped side during corner sewing. We are always waiting for your return.
以下、本発明を実施する片針停止機能付き二本針ミシン
の一実施例を第１図乃至第３図に従って説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a two-needle sewing machine with a one-needle stop function that embodies the present invention will be described below with reference to FIGS. 1 to 3.
第１図及び第２図は二本針ミシンのヘッド部を示す略図
であり、第３図は針棒部を示す断面図である。符号１は
ミシン機体２の内面に突設した針棒支承ブロックであり
、該針棒支承ブロック１に穿設した摺動孔３，３に対し
て筒状の針棒４，４をそれぞれ上下方向摺動自在に軸設
してなる。該針棒４，４の各下端は、ヘッド部下面から
９６列して突出し、針止め部材５によってミシン針Ｎを
取り付ける構造になると共に、上記針棒支承ブロックｌ
の切欠位置において、針棒抱き部材６の摺動孔７，７を
摺動自在に貫挿してなる。符号８ａ及び８ｂは上記針棒
４，４の後端がら押圧端９ａ。1 and 2 are schematic diagrams showing the head portion of a two-needle sewing machine, and FIG. 3 is a sectional view showing the needle bar portion. Reference numeral 1 denotes a needle bar support block protruding from the inner surface of the sewing machine body 2, and the cylindrical needle bars 4, 4 are vertically inserted into sliding holes 3, 3 formed in the needle bar support block 1, respectively. The shaft is installed so that it can slide freely. The lower ends of the needle bars 4, 4 protrude in 96 rows from the lower surface of the head, and have a structure in which sewing machine needles N are attached to them by needle clamp members 5.
It is slidably inserted through the sliding holes 7, 7 of the needle bar holding member 6 at the notch position. Reference numerals 8a and 8b denote pressing ends 9a from the rear ends of the needle bars 4, 4.
９ｂを突出するように内挿した針停止捧であり、コイル
スプリング１０．１０によって抑圧端９ａ。It is a needle stopper inserted so as to protrude from 9b, and the suppressed end 9a is held by a coil spring 10.10.
９ｂがそれぞれ突出する方向に弾性付勢すると共に、針
棒４から針棒抱き部材６と係合する位置に針棒駆動ボー
ル１１を出退変位する溝カム１２を設け、針停止棒８ａ
、８ｂが針棒４に対して下降変位したとき釈放、上昇変
位したとき係合する針棒抱き部材６との連結手段を構成
する一方、針棒４から針棒支承ブロック１と係合する位
置に針棒停止ボール１３を出退変位する溝カム１４を設
け、針停止棒８ａ、８ｂが針棒４に対して下降変位した
とき係合、上昇変位したとき釈放する針棒支承ブロック
１との連結手段を構成してなる。符号１５ａ、１５ｂは
、上記両針棒４，４の後端から突出した押圧端９ａ、９
ｂと作用端１６．１６を対応して、針棒支承ブロック１
に突設した支持軸１７に対して、それぞれ揺動自在に枢
設した針停止変換揺動部材であり、それぞれアーム端を
ソレノイドコイル１８ａ、１８ｂの駆動ロッドと連結し
、該駆動ロッドの往復動（矢印Ａ）によって上記作用端
１６．１６を上昇した針棒４，４の後端から突出した抑
圧端９ａ、９ｂと当突する位置又は干渉しない位置に回
動変位してなる。A grooved cam 12 is provided to elastically bias the needles 9b in the direction in which they protrude, and to move the needle bar drive ball 11 in and out at a position where it engages with the needle bar holding member 6 from the needle bar 4.
, 8b constitutes a connection means with the needle bar holding member 6 which is released when displaced downward relative to the needle bar 4 and engaged when displaced upward. A grooved cam 14 is provided for moving the needle bar stop ball 13 forward and backward, and the needle bar support block 1 engages when the needle stop bars 8a and 8b move downward relative to the needle bar 4 and releases it when the needle bar stop ball 13 moves upward. It constitutes a connecting means. Reference numerals 15a and 15b denote pressing ends 9a and 9 protruding from the rear ends of the needle bars 4 and 4, respectively.
b and the working end 16.16 correspond to the needle bar support block 1.
These are needle stop conversion swinging members pivotably mounted on support shafts 17 protruding from each other.The arm ends of each swinging member are connected to the drive rods of the solenoid coils 18a and 18b, and the reciprocating movement of the drive rods is (arrow A), the working ends 16, 16 are rotated to a position where they abut or do not interfere with the suppressing ends 9a, 9b protruding from the rear ends of the raised needle bars 4, 4.
なお、前記針棒抱き部材６は該部材側方に突出した連結
突起１９をモータ等の駆動源（図示せず）と連結回動す
る一ヒ軸に軸着したクランク機構と連結してなり、上下
方向（矢印Ｂ）に往復動する。The needle bar holding member 6 is formed by connecting a connecting protrusion 19 protruding to the side of the member to a crank mechanism which is connected to a drive source such as a motor (not shown) and is rotatably mounted on a shaft. It reciprocates in the vertical direction (arrow B).
即ち上記構成の片針停止機能付き二本針ミシンは、押圧
端９ａ、９ｂが後退（上昇）したとき。That is, in the twin-needle sewing machine with the one-needle stop function configured as described above, when the pressing ends 9a and 9b are retracted (raised).
針停止変換揺動部材１５ａ（又は１５ｂ）の作用端１６
がその位置にあると、当突によって針停止捧８ａ（又は
ｓｂ）が針棒４に対して降下する。Working end 16 of needle stop conversion swinging member 15a (or 15b)
When is in that position, the needle stopper 8a (or sb) is lowered relative to the needle bar 4 due to the collision.
この結果、溝カム１２によって突出していた針棒駆動ボ
ール１１が後退して針棒抱き部材６と滑りを生ずるよう
になると同時に、溝カム１４によって針棒停止ボール１
３が突出して針棒支承ブロック１と係合し１片針停止状
態になる。また、押圧端９ａ（又は９ｂ）が後退（上昇
）したとき、針停止変換揺動部材１５ａ（又は１５ｂ）
の作用端１６がその位置から外れていると、針停止棒８
ａ（又は８ｂ）がコイルスプリングによって復帰し、針
棒４に対して上昇する。この結果、溝カム１２によって
針棒駆動ボール１１が突出して針棒抱き部材６と係合す
ると同時に、溝カム１４によって突出していた針棒停止
ボール１３が後退して針棒支承ブロックｌと摺動自在に
なり、縫製状態になる。As a result, the needle bar drive ball 11 that had been protruding by the groove cam 12 moves back and starts to slide against the needle bar holding member 6, and at the same time, the needle bar stop ball 11 is moved by the groove cam 14.
3 protrudes and engages with the needle bar support block 1, resulting in a state in which one needle is stopped. Also, when the pressing end 9a (or 9b) retreats (raises), the needle stop conversion swinging member 15a (or 15b)
If the working end 16 of the needle is out of position, the needle stop bar 8
a (or 8b) is returned by the coil spring and rises relative to the needle bar 4. As a result, the needle bar drive ball 11 protrudes by the grooved cam 12 and engages with the needle bar holding member 6, and at the same time, the needle bar stop ball 13, which had been protruded by the grooved cam 14, retreats and slides with the needle bar support block l. Becomes free and ready to sew.
上記針停止変換揺動部材１５ａ（又は１５ｂ）の作用端
１６は、ソレノイドコイル１８ａ（又は１８ｂ）のＯＮ
１０ Ｆ Ｆ作用（コイルスプリングによる弾性によっ
て復帰する。）によって駆動されるものであり、その手
動操作スイッチはミシン機体２の所望位置に設けること
ができると共に、中央制御回路（図示せず）によって自
動的に駆動制御する構成になる。The operating end 16 of the needle stop conversion swinging member 15a (or 15b) is connected to the ON state of the solenoid coil 18a (or 18b).
The manual operation switch can be installed at a desired position on the sewing machine body 2, and can be automatically operated by a central control circuit (not shown). The configuration is such that the drive is controlled precisely.
また両ミシン針Ｎ、Ｎに供給する上糸の糸道には、上糸
の供給側から通過する上糸を滑り摩擦の調節によって緊
締又は弛緩する糸調子２０と、上記針棒４，４の往復動
と対応して往復動する天秤２１間に糸緩め機構１９を構
成してなる。該糸緩め機構１９は、糸道を横断して矢印
Ｃ方向に往復動し、上糸の経由位置を変えて糸道の長さ
を変更する糸案内２２を突設してなるもので、該糸案内
２２はソレノイドコイル２３等の制御駆動可能な往復駆
動機構によって駆動する構造になり、糸調子２０を経由
した上糸を該糸案内２２を介して天秤２１に導き、針棒
４の先端に取り付けたミシン針Ｎ、Ｎの針孔に挿通した
糸道を構成してなる。Further, in the thread path of the upper thread supplied to both sewing machine needles N, N, there is a thread tensioner 20 that tightens or loosens the upper thread passing from the upper thread supply side by sliding friction adjustment, and a thread tensioner 20 that tightens or loosens the upper thread passing from the upper thread supply side, and A thread loosening mechanism 19 is constructed between a take-up lever 21 that reciprocates in response to the reciprocating movement. The thread loosening mechanism 19 is provided with a protruding thread guide 22 that reciprocates in the direction of arrow C across the thread path and changes the length of the thread path by changing the passing position of the upper thread. The thread guide 22 is driven by a reciprocating drive mechanism such as a solenoid coil 23 that can be controlled and driven. It constitutes a thread path that is inserted through the needle holes of the attached sewing machine needles N and N.
次に第４図（ａ）及び（ｂ）の流れ図、第５図（ａ）、
（ｂ）、（ｃ）及び（ｄ）の角部縫製工程を示す説明図
に従って１本発明による片針停止制御の一実施例を示し
、片針停止解除タイミングについて説明する。Next, the flowcharts in Figures 4(a) and (b), Figure 5(a),
An embodiment of the one-needle stop control according to the present invention will be shown in accordance with the explanatory diagrams (b), (c), and (d) showing the corner sewing process, and the one-needle stop release timing will be explained.
第５図に示すように布ａの角部を二本針ミシンによって
縫製Ｒ８，ＬＳＬ、ているとき、第５図（ａ）に示すＰ
１位置に至ったところで片針停止スイッチがＯＮすると
、その時のミシン速度が５０Ｏｒｐｍ以下か否かを判定
して、設定速度範囲の場合は片針を停止し、糸緩め動作
を行うと同時に縫製針数のカウントＮを開始する。糸緩
め動作は停止側の針について糸道に構成した糸緩め機構
を作動させて行うと共に、ソレノイドコイル１５ａ ５
７− ＯＮ作動することによって、前述のように片針停
止機構を作動させて針棒の上死点で停止する。As shown in Fig. 5, when the corner of cloth a is sewn with a double-needle sewing machine R8, LSL, P as shown in Fig. 5(a)
When the single needle stop switch is turned on when the sewing machine reaches the 1st position, it is determined whether the sewing machine speed at that time is 50 Orpm or less, and if it is within the set speed range, the single needle is stopped and the sewing needle is loosened at the same time. Start counting the number N. The thread loosening operation is performed by activating the thread loosening mechanism configured in the thread path of the needle on the stop side, and also by operating the thread loosening mechanism configured in the thread path of the needle on the stop side.
7- By turning ON, the single needle stop mechanism is activated as described above, and the needle bar is stopped at the top dead center.
これで片針停止スイッチがＯＦＦ入力されないかぎり第
５図（ｂ）に示すように１片針で布ａの角点Ｐ２まで縫
製する。該角点Ｐ２位置では針棒の下死点で停止してお
り、布押えを引き一ヒばて布送りから釈放した布ａを次
の縫製方向に転向する。Now, unless the one-needle stop switch is turned OFF, sewing is performed using one needle up to the corner point P2 of the cloth a, as shown in FIG. 5(b). At the corner point P2, the needle bar is stopped at the bottom dead center, and the cloth a, which is released from cloth feeding by pulling the presser foot, is turned to the next sewing direction.
この作動によって布押えの作動部に設けた押えセンサか
ら［押え人力」を受けて角位置を認識する。Through this operation, the corner position is recognized by receiving presser force from the presser foot sensor provided in the actuating part of the presser foot.
角位置を認識すると同時にこれまでの針数Ｎを記憶する
と共に、以後の針数をＭとして縫製を行い、「手動」設
定がされているときは＋ Ｎ−Ｍの値が「１」になるま
で続ける。At the same time as the corner position is recognized, the previous number of stitches N is memorized, and the subsequent number of stitches is set as M to sew, and when the "manual" setting is set, the value of +N-M becomes "1". Continue until.
上記手動設定の場合の針数の差Ｎ−Ｍは、第５図（ｃ）
に示すように、二本針線製開始点Ｐ３における不完全縫
目Ｓ２による針位置の誤差δを吸収するためのものであ
り、−針分手前で停止し、開始点Ｐ３を一致させるもの
である。該誤差δは角部の角点が小さいほど大きくなる
ものであり、必要に応じてこの針数の差Ｎ−Ｍを「２」
又は適当に変更することができる。The difference in the number of stitches N-M in the case of the above manual setting is shown in Figure 5(c).
As shown in , this is to absorb the error δ in the needle position due to the incomplete stitch S2 at the starting point P3 of the double-needle line, and it is to stop at - needle minutes before and align the starting point P3. . The error δ becomes larger as the corner point becomes smaller, and if necessary, this difference in the number of stitches N-M can be set to "2".
Or it can be changed appropriately.
また「自動」設定がされている場合は、片針縫製開始（
ｐｉ位置）から布押え操作（ｐ２点）時までカウントし
た針数Ｎと、該布押え操作後の針数Ｍがそのカウント数
Ｎと同数に達したとき、糸緩め機構１９が復帰すると同
時に中央制御回路によりソレノイドコイル１５ａを０Ｆ
ＦＬ、、第５図（ｄ）に示すように二重針による縫製に
復帰して角縫いを終了する。Also, if "Auto" is set, single-needle sewing starts (
When the number of stitches N counted from the presser foot operation (point p2) from the presser foot operation (point p2) and the number M of stitches after the presser foot operation reach the same number as the counted number N, the thread loosening mechanism 19 returns and the center The solenoid coil 15a is set to 0F by the control circuit.
FL, As shown in FIG. 5(d), the sewing returns to the double needle sewing and the corner stitching is completed.
尚、前記構成では針停止変換揺動部材１５ａ（又は１５
ｂ）の駆動をソレノイドコイルによって実施したものを
示したが、該部駆動機構はエアシリンダ等種々のアクチ
ュエータを使用することが可能であることはいうまでも
ない。In the above configuration, the needle stop conversion swinging member 15a (or 15
Although the drive shown in b) is performed using a solenoid coil, it goes without saying that various actuators such as an air cylinder can be used for the driving mechanism.
以上述べたように本発明に係る片針停止機能付き二本針
ミシンは１片針停止機能を備えた二本針ミシンにおいて
、両針棒の各ロック機構をそれぞれ適宜アクチュエータ
によって独立して解除する構造にすると共に、該アクチ
ュエータを中央制御回路によって制御駆動し、片針縫製
開始から布押え操作時までの針数を基準として、該布押
え操作後の針数が予め中央制御回路にセットした縫製誤
差を考慮した針数を減算した針数に達したとき。As described above, the two-needle sewing machine with one-needle stop function according to the present invention is a two-needle sewing machine with one-needle stop function, in which each locking mechanism of the two needle bars is independently released by an appropriate actuator. In addition, the actuator is controlled and driven by a central control circuit, and the number of stitches after the presser foot is operated is set in advance in the central control circuit. When the number of stitches after subtracting the number of stitches considering the error is reached.
アクチュエータを作動して停止側の針棒を復帰駆動する
ように制御駆動する構造になるため、角縫いにおいて縫
製側と停止側の針数誤差に関係なく、自動的または半自
動的に停止側の針棒を縫製可能な状態に復帰するように
待機し、針ピツチの調整が簡単にできる特徴を特徴を有
するものであり。The structure is such that the actuator is actuated to drive the needle bar on the stopped side to return, so the needle on the stopped side is automatically or semi-automatically moved regardless of the error in the number of stitches on the sewing side and the stopped side during corner sewing. The sewing machine stands by so that the rod returns to a state ready for sewing, and the needle pitch can be easily adjusted.
美麗な縫製仕トリを呈するものであり、本発明実施後の
効果は極めて大きい。It exhibits a beautiful sewing finish, and the effects after implementing the present invention are extremely large.
第１図は本発明に係る片針停止機能付き二本針ミシンの
一実施例を示す二重針ミシンヘッド部の略正面図、第２
図は同側面図、第３図は針棒部を示す断面図、第４図（
ａ）及び（ｂ）は本発明の片針停止解除タイミングの一
例を示す流れ図、第５図（ａ）、（ｂ）、（ｃ）及び（
ｄ）はそれぞれ本発明による角部縫製工程を示す説明図
である。
１・・・針棒支承ブロック ４・・・針棒６・・・針棒
抱き部材 ８ａ、８ｂ・・・針棒止棒１０・・・コ
イルスプリング １１・・・針棒駆動ボール１２．１４
・・・溝カム １３・・・針棒停止ボール１５ａ、
１５ｂ・・・針停止変換揺動部材１８ａ、１８ｂ・・・
ソレノイドコイルＮ・・・ミシン針 Ｒ８，
ＮＳ・・・縫目ＳＬ、Ｓ２・・・不完全縫目
第１図
第２図
第４図（ｂ）
５図
（ｂ）FIG. 1 is a schematic front view of a double needle sewing machine head showing an embodiment of a double needle sewing machine with a single needle stop function according to the present invention;
The figure is a side view, Figure 3 is a sectional view showing the needle bar section, and Figure 4 (
a) and (b) are flowcharts showing an example of the one-needle stop release timing of the present invention, and Fig. 5 (a), (b), (c) and (
d) is an explanatory diagram showing a corner sewing process according to the present invention. 1... Needle bar support block 4... Needle bar 6... Needle bar holding member 8a, 8b... Needle bar stop bar 10... Coil spring 11... Needle bar drive ball 12.14
...Groove cam 13...Needle bar stop ball 15a,
15b... Needle stop conversion swinging members 18a, 18b...
Solenoid coil N...Sewing machine needle R8,
NS...stitch SL, S2...incomplete stitch Figure 1 Figure 2 Figure 4 (b) Figure 5 (b)
Claims (2)
けると共に、該両針棒を駆動機構によって往復動する針
抱き部材に対してそれぞれ軸方向摺動自在に軸設し、該
両針棒と針抱き部材間にロック機構を構成すると共に、
該ロック機構を解除操作して片針停止する機能を備えた
二本針ミシンにおいて、上記針棒の両ロック機構をそれ
ぞれ適宜アクチュエータによって独立して解除する構造
にすると共に、該アクチュエータを中央制御回路によっ
て制御駆動し、片針縫製開始から布押え操作時までの針
数を基準として、該布押え操作後の針数が予め中央制御
回路にセットした縫製誤差を考慮した針数を減算した針
数に達したとき、アクチュエータを作動して停止側の針
棒を復帰駆動することを特徴とする片針停止機能付き二
本針ミシン。(1) Sewing machine needles are attached to the lower ends of the needle bars that are arranged in parallel, and both needle bars are each mounted so as to be slidable in the axial direction with respect to a needle holding member that reciprocates by a drive mechanism. A locking mechanism is configured between the needle holding member and the needle holding member, and
In a two-needle sewing machine having a function of stopping one needle by releasing the locking mechanism, both locking mechanisms of the needle bar are configured to be independently released by appropriate actuators, and the actuators are controlled by a central control circuit. Based on the number of stitches from the start of single-needle sewing to when the presser foot is operated, the number of stitches after the presser foot operation is the number of stitches obtained by subtracting the number of stitches that takes into account the sewing error set in advance in the central control circuit. A two-needle sewing machine with a single-needle stop function, which operates an actuator to return the needle bar on the stop side when the needle reaches the stop position.
時までの針数をカウントし、該布押え操作後の針数がそ
のカウント数と同数に達したとき、中央制御回路により
アクチュエータを介して針棒のロック機構を解除し、停
止側の針棒を復帰駆動する自動復帰制御機構を具備した
ことを特徴とする請求項１記載の片針停止機能付き二本
針ミシン。(2) The central control circuit counts the number of stitches from the start of single-needle sewing until the time the presser foot is operated, and when the number of stitches after the presser foot operation reaches the same number as the counted number, the central control circuit 2. A two-needle sewing machine with a single-needle stop function according to claim 1, further comprising an automatic return control mechanism for releasing the locking mechanism of the needle bar and driving the stopped needle bar to return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13915888A JPH01308589A (en) | 1988-06-06 | 1988-06-06 | Two needle sewing machine with one needle stopping function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13915888A JPH01308589A (en) | 1988-06-06 | 1988-06-06 | Two needle sewing machine with one needle stopping function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01308589A true JPH01308589A (en) | 1989-12-13 |
| JPH0452160B2 JPH0452160B2 (en) | 1992-08-21 |
Family
ID=15238929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13915888A Granted JPH01308589A (en) | 1988-06-06 | 1988-06-06 | Two needle sewing machine with one needle stopping function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01308589A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177077A (en) * | 1991-12-04 | 1993-07-20 | Juki Corp | Two-needle sewing machine with one-needle bar stop function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53111856A (en) * | 1977-03-11 | 1978-09-29 | Mitsubishi Electric Corp | Stitching device |
| JPS5614785U (en) * | 1979-07-13 | 1981-02-07 | ||
| JPS6168082A (en) * | 1984-09-10 | 1986-04-08 | 三菱電機株式会社 | Needle rod change-over apparatus |
| JPS6253698A (en) * | 1985-09-03 | 1987-03-09 | 三菱電機株式会社 | Twin needle stitch apparatus |
-
1988
- 1988-06-06 JP JP13915888A patent/JPH01308589A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53111856A (en) * | 1977-03-11 | 1978-09-29 | Mitsubishi Electric Corp | Stitching device |
| JPS5614785U (en) * | 1979-07-13 | 1981-02-07 | ||
| JPS6168082A (en) * | 1984-09-10 | 1986-04-08 | 三菱電機株式会社 | Needle rod change-over apparatus |
| JPS6253698A (en) * | 1985-09-03 | 1987-03-09 | 三菱電機株式会社 | Twin needle stitch apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177077A (en) * | 1991-12-04 | 1993-07-20 | Juki Corp | Two-needle sewing machine with one-needle bar stop function |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452160B2 (en) | 1992-08-21 |
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