JP2005211311A5 - - Google Patents

Claims (8)

下端部に装着された縫い針と共に上下に駆動される針棒と、前記針棒の上下駆動に同期して揺動される天秤とを備えたミシンヘッドを具備するミシンであって、
前記天秤に掛け渡された縫糸を、該天秤より下流かつ前記針棒の縫い針より上流の位置で保持するための保持部材を、前記ミシンヘッドに設け、
前記針棒の動きを停止して前記ミシンヘッドの稼動を休止するとき、前記保持部材により前記縫糸を保持することにより、前記天秤の動きにかかわりなく、該天秤の下流における縫糸の動きを停止させるようにしたことを特徴とするミシン。 A sewing machine comprising a sewing head having a needle bar that is driven up and down together with a sewing needle attached to a lower end portion, and a balance that is swung in synchronization with the vertical driving of the needle bar,
A holding member for holding the sewing thread stretched over the balance at a position downstream from the balance and upstream from the sewing needle of the needle bar is provided in the sewing machine head,
When stopping the operation of the sewing head by stopping the movement of the needle bar, the sewing thread is held by the holding member to stop the movement of the sewing thread downstream of the balance regardless of the movement of the balance. A sewing machine characterized by that. 前記保持部材は、糸を保持しない第１の位置と糸を保持する第２の位置のいずれかに選択的に変位する変位部材を含み、前記ミシンヘッドの稼動時に該変位部材が前記第１の位置に位置され、前記ミシンヘッドの稼動を休止するとき該変位部材が前記第２の位置に位置されることを特徴とする請求項１に記載のミシン。   The holding member includes a displacement member that selectively displaces to one of a first position that does not hold the yarn and a second position that holds the yarn, and the displacement member is moved to the first position when the sewing head is in operation. 2. The sewing machine according to claim 1, wherein the displacement member is positioned at the second position when the operation of the sewing head is stopped at a position. 3. 前記ミシンヘッドには、該ミシンヘッドの稼動時に前記針棒の上下動と同期して上下に駆動されるが、該ミシンヘッドの稼動休止時に上方の退避位置へと退避移動される布押え体が設けられており、前記変位部材は、該布押え体が前記退避位置へと移動する動きに連動して前記第２の位置に位置されることを特徴とする請求項２に記載のミシン。   The sewing head has a cloth presser that is driven up and down in synchronization with the vertical movement of the needle bar when the sewing head is in operation, and is retreated to the upper retreat position when the sewing head is inactive. The sewing machine according to claim 2, wherein the sewing machine is provided, and the displacement member is positioned at the second position in conjunction with a movement of the cloth presser to the retracted position. 前記保持部材は、前記針棒の縫糸導入口の付近に設けられていることを特徴とする請求項１に記載のミシン。   The sewing machine according to claim 1, wherein the holding member is provided in the vicinity of a thread introduction port of the needle bar. 前記ミシンヘッドは、更に、前記針棒と同軸心上に組付けられてその軸心回りの回転が自由な回転体と、この回転体とともに回転されて縫い針の針元位置へと紐状被縫製部材を案内するガイドとを備えており、縫いパターンデータに基づく布地の移動方向に応じて前記回転体を回転制御し、前記縫い針の針元への紐状被縫製部材の案内方向が適正となるようにガイドの向きを変更しつつ、この紐状部材を本縫いにより布地に縫い着けるものである請求項１乃至４のいずれかに記載のミシン。   The sewing head further includes a rotating body which is assembled coaxially with the needle bar and is free to rotate about its axis, and is rotated together with the rotating body to the needle base position of the sewing needle. And a guide for guiding the sewing member, the rotation of the rotating body is controlled according to the movement direction of the fabric based on the sewing pattern data, and the guide direction of the string-like sewing member to the needle base of the sewing needle is appropriate The sewing machine according to any one of claims 1 to 4, wherein the string-like member is sewn to the fabric by main sewing while changing the direction of the guide so that 前記ミシンは、複数の前記ミシンヘッドを具備する請求項１乃至５のいずれかに記載のミシン。   The sewing machine according to claim 1, wherein the sewing machine includes a plurality of the sewing heads. 下端部に装着された縫い針と共に上下に駆動される針棒と、前記針棒の上下駆動に同期して揺動される天秤と、前記針棒と同軸心上に組付けられてその軸心回りの回転が自由な回転体と、この回転体とともに回転されて縫い針の針元位置へと紐状部材を案内するガイドとを備え、縫いパターンデータに基づく布地の移動方向に応じて前記回転体を回転制御し、前記縫い針の針元への紐状部材の案内方向が適正となるようにガイドの向きを変更しつつ、この紐状部材を本縫いにより布地に縫い着けるミシンヘッドを複数備えた多頭ミシンにおいて、
前記天秤に掛け渡された縫糸を、天秤より下流で保持するための保持部材を前記ミシンヘッドに設け、
稼動を休止するミシンヘッドにおいて、前記保持部材による縫糸の保持によって前記天秤の下流における縫糸の動きを停止させるようにしたことを特徴とする多頭ミシン。 A needle bar that is driven up and down together with a sewing needle attached to the lower end, a balance that is swung in synchronization with the vertical drive of the needle bar, and an axis that is assembled coaxially with the needle bar. A rotating body that can freely rotate around and a guide that rotates together with the rotating body and guides the string-like member to the needle base position of the sewing needle, and the rotation according to the movement direction of the fabric based on the sewing pattern data A plurality of sewing heads that sew the string-like member to the fabric by main sewing while controlling the rotation of the body and changing the guide direction so that the guide direction of the string-like member to the needle base of the sewing needle is appropriate. In the multi-head sewing machine provided,
A holding member for holding the sewing thread stretched over the balance downstream from the balance is provided on the sewing head.
The multi-head sewing machine characterized in that, in the sewing machine head whose operation is stopped, the movement of the sewing thread downstream of the balance is stopped by holding the sewing thread by the holding member. 前記ミシンヘッドの稼動時において前記針棒の上下動と同期して上下に駆動される一方、前記ミシンヘッドの稼動休止時において上方の退避位置へと退避されて上下に駆動されることのない布押え体と、前記布押え体の退避動作に伴って前記天秤に掛け渡された縫糸を保持するように前記保持部材を連動させる連動機構とを備えたことを特徴とする請求項７に記載の多頭ミシン。   While the sewing head is in operation, the cloth is driven up and down in synchronization with the vertical movement of the needle bar, and when the sewing head is not in operation, the cloth is retracted to the upper retracted position and is not driven up and down. The presser body and an interlocking mechanism for interlocking the holding member so as to hold the sewing thread stretched over the balance as the cloth presser body is retracted. Multi-head sewing machine.