WO2012073893A1 - ミシンの下ルーパ糸通し装置 - Google Patents
ミシンの下ルーパ糸通し装置 Download PDFInfo
- Publication number
- WO2012073893A1 WO2012073893A1 PCT/JP2011/077399 JP2011077399W WO2012073893A1 WO 2012073893 A1 WO2012073893 A1 WO 2012073893A1 JP 2011077399 W JP2011077399 W JP 2011077399W WO 2012073893 A1 WO2012073893 A1 WO 2012073893A1
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- WIPO (PCT)
- Prior art keywords
- looper
- threading
- moving member
- lower looper
- lock lever
- Prior art date
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-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B87/00—Needle- or looper- threading devices
- D05B87/02—Needle- or looper- threading devices with mechanical means for moving thread through needle or looper eye
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B63/00—Devices associated with the loop-taker thread, e.g. for tensioning
Definitions
- the present invention relates to a lower looper threading device for a sewing machine that is equipped in a sewing machine that performs overlock sewing and that can perform threading to the lower looper safely and reliably.
- a so-called overlock sewing machine that performs a conventional edge knitting combines a needle thread passed through a needle hole of a sewing needle and a looper thread passed through a looper hole of a lower looper to form a stitch. Therefore, in order to loop the looper yarn over the yarn guide portion of the lower looper and pass it through the looper hole, the hand pulley is moved until the yarn guide portion and the looper hole of the lower looper move to a position close to the opening on the front surface of the sewing machine. The looper yarn had to be hung on the yarn guide portion moved to a position close to the opening and passed through the looper hole.
- Patent Document 1 there is an overlock sewing machine safety device that can detect the position of the looper and prevent the rotation of the main shaft while the detection signal indicating that the looper is in the exposure position is generated. It is disclosed. Further, in Patent Document 2, the locking arm is inserted into the engaging portion of the pulley so that the threading device is not damaged even when the sewing machine is started during the threading operation. A looper threading device for preventing movement is disclosed. Accordingly, even when the sewing machine is erroneously started, the lower looper does not operate, and the looper threading device is not damaged by the swinging of the lower looper.
- the safety device for the overlock sewing machine disclosed in Patent Document 1 it is necessary to perform the threading operation to the looper while the detection signal indicating that the looper is at the exposure position is generated.
- the configuration of the entire apparatus is complicated, which causes an increase in the cost of the apparatus.
- the looper threading device disclosed in Patent Document 2 prevents the threading device from being damaged even when the sewing machine is started during the threading operation. Separately from this, it is necessary to insert the locking arm into the engaging portion of the pulley, and if the forging operation is forgotten and the sewing machine is accidentally started during the threading operation, the looper threading device There is still a risk of damage due to the swinging of the lower looper.
- An object of the present invention is to provide a lower looper threading device for a sewing machine.
- a lower looper threading device for a sewing machine is a lower looper threading device for a sewing machine in which a looper thread is threaded into a looper hole of a lower looper below a needle plate.
- a threading member having a collar portion that can be inserted into the looper hole of the first movement member is fixed to one end of the threading member, and is coupled to be movable in the opposite direction to the first movement member.
- a second moving member having an operating member connected to the same side as the flange portion, and a protruding portion that engages with a groove portion of a groove cam mounted on the main shaft at a lower portion, and a protruding portion that contacts the operating member
- the operation member that pushes in the second moving member and the protrusion portion of the lock lever Therefore, the second moving member is pushed in without being restricted by pushing the operating member.
- the second moving member is pushed in, the first moving member moving in the opposite direction is pushed out, and the collar portion is inserted into the looper hole of the lower looper.
- the threading operation to the lower looper is performed, the rotation of the main shaft is always prevented, and the lower looper threading device due to the swinging of the lower looper due to the rotation of the main shaft is prevented in advance. It becomes possible to do. Further, it is not necessary to detect the position of the lower looper, and a simple configuration is sufficient for the entire apparatus, and the cost of the apparatus can be reduced.
- the lock lever in the first invention, is fixed so that one end can be moved in the vertical direction, and when the other end is lowered, When the convex portion engages with the groove portion, the operating member and the projection portion are separated to move the second moving member, and when the other end is raised, the convex portion is released from the groove portion.
- the operation member and the protrusion are in contact with each other to restrict the movement of the second moving member.
- the lock lever is fixed so that one end can be moved in the vertical direction.
- the convex portion engages with the groove portion, the operation member and the projection portion are separated from each other, and the second moving member can move.
- the other end of the lock lever is raised, the convex portion is released from the groove portion, and the operation member and the projection portion come into contact with each other to restrict the movement of the second moving member.
- a lower looper threading device for a sewing machine is a lower looper threading device for a sewing machine in which a looper thread is threaded into a looper hole of the lower looper below the needle plate, and is inserted into the looper hole of the lower looper.
- a threading member having a collar portion that can be connected to one end, and is connected to the first moving member so as to be able to move in a direction opposite to the first moving member;
- the second moving member which is connected to a rotatable operation dial on the same side as the part, and the convex part that engages the groove part of the groove cam attached to the main shaft are moved downward, and one end is moved vertically
- a lock lever having the other end raised and lowered according to the rotation of the operation dial and having the operation dial at an end thereof, and the operation dial is connected to the other end of the lock lever. Connecting and moving the other end up and down Has ability pore cam mechanism, the rotation of the operation dial in a state where the convex portion is engaged with the groove, characterized in that you have to move the second movable member.
- the convex portion of the lock lever can be engaged with the groove portion of the groove cam mounted on the main shaft by simply rotating the operation dial, and in the engaged state, that is, in the state where rotation of the main shaft is prevented,
- the second moving member can be pushed in.
- the first moving member is pushed out, and the collar portion is inserted into the looper hole of the lower looper.
- the rotation of the main shaft is always prevented, and the lower looper threading device is prevented from being damaged due to the swinging of the lower looper due to the rotation of the main shaft. This can be prevented beforehand. Further, it is not necessary to detect the position of the lower looper, and a simple configuration is sufficient for the entire apparatus, and the cost of the apparatus can be reduced.
- a lower looper threading device (hereinafter referred to as a lower looper threading device 10) according to the present invention will be described in detail with reference to the drawings.
- the direction along the cloth feed direction on the plane along the needle plate of the sewing machine (hereinafter referred to as the needle plate 100) is the Y-axis direction, and the direction orthogonal to the cloth feed direction is the X-axis direction.
- a direction perpendicular to the plane along the plate 100 is taken as a Z-axis direction.
- FIG. 1 is a perspective view showing a configuration of a lower looper threading device 10 according to Embodiment 1 of the present invention
- FIG. 2 shows a configuration of the lower looper threading device 10 according to Embodiment 1 of the present invention.
- FIG. The lock lever 30 in FIG. 1A is actually provided below the operation member 14 substantially in parallel with the second moving member 13 as shown in FIG. 30-related members are independently shown in FIG.
- the lower looper threading device 10 has a hook of a threading member 17 fixed to one end of the first moving member 11 in the looper hole 16 of the lower looper 15.
- the threading operation is performed by inserting the portion 18, hooking the looper thread 20 spanned on the lower looper 15 with the collar 18, and pulling out the collar 18 of the threading member 17 from the looper hole 16.
- a linear gear is provided on the side surface of the first moving member 11, and meshes with a linear gear provided on the side surface of the second moving member 13 via the rotating gear 12.
- the second moving member 13 is connected to the operating member 14 on the same side as the flange 18 of the first moving member 11 and is biased toward the front side in the Y-axis direction by a spring 21. By pushing the operating member 14 to the back side in the Y-axis direction, the second moving member 13 is also pushed to the back side in the Y-axis direction against the urging force of the spring 21.
- the second moving member 13 is connected to the first moving member 11 and the rotating gear 12 facing each other. That is, a linear gear is provided on the side surface of the second moving member 13 on the first moving member 11 side, and the second moving member 13 is pushed into the back side in the Y-axis direction by meshing with the rotating gear 12. In this case, the rotating gear 12 rotates counterclockwise.
- a linear gear is also provided on the side of the first moving member 11 on the second moving member 13 side, and when the rotating gear 12 rotates counterclockwise by meshing with the rotating gear 12, the first gear
- the moving member 11 is pushed out to the near side in the Y-axis direction (the opposite side to the arrow direction of the Y-axis in FIG. 1), which is the opposite direction to the second moving member 13.
- the threading member 17 fixed to one end of the first moving member 11 moves to the near side in the Y-axis direction, and the heel part 18 is inserted into the looper hole 16 of the lower looper 15.
- the user confirms that the looper thread 20 hung on the lower looper 15 is hooked on the collar portion 18 inserted into the looper hole 16 of the lower looper 15, and moves the operation member 14 to the near side in the Y-axis direction. return.
- the second moving member 13 is pulled back to the near side in the Y-axis direction by the biasing force of the spring 21.
- FIG. 3 is a side view and a plan view showing the configuration of the threading member 17 of the lower looper threading device 10 according to Embodiment 1 of the present invention.
- FIG. 3 (a) is a side view showing the configuration of the threading member 17 of the lower looper threading device 10 according to Embodiment 1 of the present invention
- FIG. 3 (b) is Embodiment 1 of the present invention. It is a top view which shows the structure of the threading member 17 of the lower looper threading apparatus 10 which concerns on this.
- the threading member 17, after inserting the collar 18 into the looper hole 16 of the lower looper 15, to make it easier to hook the looper thread 20 spanned on the lower looper 15, thread passing section 19 that loops the looper thread 20. are provided on both sides of the flange 18. By looping the looper yarn 20 to the yarn passing portion 19, the looper yarn 20 is surely hooked on the collar portion 18, and the threading can be reliably performed.
- the main shaft 40 can be fixed by the operating member 14 and the lock lever 30 in order to prevent the main shaft 40 from rotating during the threading operation.
- a lock lever 30 is provided below the operating member 14 connected to the second moving member 13, and the second moving member 13 connected to the operating member 14.
- the lock lever 30 is urged upward by the torsion spring 22, and the main shaft 40 cannot be rotated by preventing the main shaft 40 from rotating with the user in mind.
- FIG. 4 is a schematic diagram showing the movement of the lock lever 30 and the operation member 14 according to Embodiment 1 of the present invention.
- FIG. 4 (a) is a schematic diagram showing a state where the lock lever 30 according to the first embodiment of the present invention is fixed to the main shaft 40
- FIG. 4 (b) is a first embodiment of the present invention. It is a schematic diagram which shows the state when the lock lever 30 which concerns on is released from the main axis
- FIG. 4 (a) is a schematic diagram showing a state where the lock lever 30 according to the first embodiment of the present invention is fixed to the main shaft 40
- FIG. 4 (b) is a first embodiment of the present invention. It is a schematic diagram which shows the state when the lock lever 30 which concerns on is released from the main axis
- the lock lever 30 Since the lock lever 30 is fixed so that one end can be moved in the vertical direction, as shown in FIG. 4A, when the other end of the lock lever 30 is lowered, the lock lever 30 is provided below the lock lever 30.
- the protruding portion 32 engages with the groove portion 42 of the groove cam 41 attached to the main shaft 40.
- the main shaft 40 cannot rotate because the convex portion 32 of the lock lever 30 engages with the groove portion 42.
- the protrusion 31 provided on the upper portion of the lock lever 30 moves away from the operation member 14. Therefore, the operating member 14 can be pushed into the back side in the Y-axis direction without being restricted by the protrusion 31 and the threading operation can be performed.
- the protrusion 31 provided on the upper part of the lock lever 30 moves so as to come into contact with the operation member 14.
- the operation member 14 is restricted by the protrusion 31 and the second moving member 13 cannot be pushed into the back side in the Y-axis direction. Therefore, when the main shaft 40 can rotate, the threading operation cannot be performed.
- the rotation of the main shaft 40 is always prevented, so that the lower looper 15 is swung by the rotation of the main shaft 40. It is possible to prevent the lower looper threading device 10 from being damaged due to the above. Further, it is not necessary to detect the position of the lower looper 15, and a simple configuration is sufficient for the entire apparatus, and the cost of the apparatus can be reduced.
- FIG. 5 is a side view showing the positional relationship between the lock lever 30 and the second moving member 13 of the lower looper threading device 10 according to Embodiment 2 of the present invention.
- the lock lever 30 is fixed so that the one end 39 side can be moved in the vertical direction.
- the operation dial 51 is provided on the other end 38 side of the lock lever 30, and includes a gear portion 52 and a substantially “ ⁇ ”-shaped cam hole 53.
- a protrusion 381 provided on the other end 38 side of the lock lever 30 is inserted into the cam hole 53, and when the operation dial 51 rotates, the other end 38 side of the lock lever 30 is lowered, The convex portion 32 provided at the lower portion engages with the groove portion 42 of the groove cam 41 attached to the main shaft 40. The main shaft 40 cannot rotate because the convex portion 32 of the lock lever 30 engages with the groove portion 42.
- FIG. 6 is a schematic diagram showing the movement of the lock lever 30 and the second moving member 13 of the lower looper threading device 10 according to the second embodiment of the present invention.
- the cam hole 53 of the operation dial has a substantially “ ⁇ ” shape.
- the cam hole 53 is on the left end of the lock lever 30 on the other end 38 side.
- the protrusion 381 is located.
- the convex portion 32 provided at the lower portion of the lock lever 30 is released from the groove portion 42 of the groove cam 41 attached to the main shaft 40, and the main shaft 40 can rotate.
- FIG. 6B shows a state where the other end 38 side of the lock lever 30 is lowered. That is, as shown in FIG. 6B, the protrusion 381 on the other end 38 side of the lock lever 30 moves from the left end along the cam hole 53, and the cam hole 53 has a substantially “ ⁇ ”-shaped intermediate point.
- the protrusion 32 provided at the lower portion of the lock lever 30 is engaged with the groove portion 42 of the groove cam 41 attached to the main shaft 40.
- the main shaft 40 cannot rotate because the convex portion 32 of the lock lever 30 engages with the groove portion 42 of the groove cam 41 attached to the main shaft 40.
- the gear portion 52 of the operation dial 51 is engaged with the intermediate gear 60, and the intermediate gear 60 rotates counterclockwise.
- the second moving member 13 having the gear portion 131 that meshes with the intermediate gear 60 on the upper surface moves to the right in FIG. 6C, that is, in the Y-axis direction shown in FIG.
- the threading operation can be performed by being pushed into the back side of the thread.
- the rotation of the main shaft 40 is always prevented, and the lower looper 15 is swung by the rotation of the main shaft 40. It is possible to prevent the lower looper threading device 10 from being damaged due to the above. Further, it is not necessary to detect the position of the lower looper 15, and a simple configuration is sufficient for the entire apparatus, and the cost of the apparatus can be reduced.
- the threading member 17 is not limited to the mechanism for moving the threading member 17 by the first moving member 11, the rotating gear 12, and the second moving member 13, and the threading member 17 is moved when the rotation of the main shaft 40 is stopped.
- the mechanism is not particularly limited as long as it is a mechanism that can be used.
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Description
図1は、本発明の実施の形態1に係る下ルーパ糸通し装置10の構成を示す斜視図であり、図2は、本発明の実施の形態1に係る下ルーパ糸通し装置10の構成を示す平面図である。なお、図1(a)のロックレバー30は、実際には図2に示すように第二の移動部材13と略平行に、操作部材14の下方に設けてあるが、見やすくするためにロックレバー30関連の部材を独立して図1(b)に示す。
下ルーパ糸通し装置の機構自体については実施の形態1と同様であるので、同一の符号を付することにより、詳細な説明は省略する。本実施の形態2は、糸通し作業時に主軸40の回転を阻止するために、回転することが可能な操作ダイヤルとロックレバー30とにより主軸40を固定する点で実施の形態1と相違する。
11 第一の移動部材
13 第二の移動部材
14 操作部材
15 下ルーパ
16 ルーパ穴
17 糸通し部材
18 鉤部
30 ロックレバー
31、381 突起部
32 凸部
40 主軸
41 溝カム
42 溝部
51 操作ダイヤル
53 カム孔
100 針板
Claims (3)
- 針板の下方にて下ルーパのルーパ穴にルーパ糸を糸通しするミシンの下ルーパ糸通し装置において、
下ルーパのルーパ穴に挿通することが可能な鉤部を有する糸通し部材が一端に固着されている第一の移動部材と、
該第一の移動部材と逆の方向へ移動することが可能に連結されており、前記鉤部と同一側に操作部材を連結してある第二の移動部材と、
主軸に装着した溝カムの溝部に係合する凸部を下部に、前記操作部材と接触する突起部を上部に有するロックレバーと
を備え、
該ロックレバーの凸部が前記溝部に係合する場合、前記操作部材と前記ロックレバーの前記突起部とが離隔し、前記第二の移動部材の移動を規制しないようにしてあることを特徴とするミシンの下ルーパ糸通し装置。 - 前記ロックレバーは、一端を上下方向に移動することが可能に固定してあり、
他端を下げた場合、前記凸部が前記溝部に係合し、前記操作部材と前記突起部とが離隔して前記第二の移動部材が移動可能となり、前記他端を上げた場合、前記凸部が前記溝部から解放され、前記操作部材と前記突起部とが接触して前記第二の移動部材の移動を規制するようにしてあることを特徴とする請求項1に記載のミシンの下ルーパ糸通し装置。 - 針板の下方にて下ルーパのルーパ穴にルーパ糸を糸通しするミシンの下ルーパ糸通し装置において、
下ルーパのルーパ穴に挿通することが可能な鉤部を有する糸通し部材が一端に固着されている第一の移動部材と、
該第一の移動部材と逆の方向へ移動することが可能に連結されており、前記鉤部と同一側に、回転することが可能な操作ダイヤルを連結してある第二の移動部材と、
主軸に装着した溝カムの溝部に係合する凸部を下部に、一端を上下方向に移動することが可能に固定してあり、他端を前記操作ダイヤルの回転に応じて上下させ、前記操作ダイヤルを端部に有するロックレバーと
を備え、
前記操作ダイヤルは、前記ロックレバーの他端と連結し、前記他端を上下することが可能な孔カム機構を有しており、
前記操作ダイヤルの回転により、前記溝部に前記凸部が係合した状態で、前記第二の移動部材を移動させるようにしてあることを特徴とするミシンの下ルーパ糸通し装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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RU2013129850/12A RU2571257C2 (ru) | 2010-11-29 | 2011-11-28 | Продевающее устройство для нижнего петлителя швейной машины |
DE112011103955.7T DE112011103955B4 (de) | 2010-11-29 | 2011-11-28 | Einfädelvorrichtung für Nähmaschinen-Untergreifer |
AU2011337783A AU2011337783B2 (en) | 2010-11-29 | 2011-11-28 | Threading device for sewing machine lower looper |
JP2012546861A JP5330607B2 (ja) | 2010-11-29 | 2011-11-28 | ミシンの下ルーパ糸通し装置 |
Applications Claiming Priority (2)
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JP2010-264584 | 2010-11-29 | ||
JP2010264584 | 2010-11-29 |
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WO2012073893A1 true WO2012073893A1 (ja) | 2012-06-07 |
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PCT/JP2011/077399 WO2012073893A1 (ja) | 2010-11-29 | 2011-11-28 | ミシンの下ルーパ糸通し装置 |
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US (1) | US8939097B2 (ja) |
JP (1) | JP5330607B2 (ja) |
AU (1) | AU2011337783B2 (ja) |
DE (1) | DE112011103955B4 (ja) |
RU (1) | RU2571257C2 (ja) |
WO (1) | WO2012073893A1 (ja) |
Cited By (1)
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WO2021106252A1 (ja) * | 2019-11-28 | 2021-06-03 | 株式会社鈴木製作所 | ミシンの糸通し装置 |
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JP6324780B2 (ja) * | 2014-03-18 | 2018-05-16 | 蛇の目ミシン工業株式会社 | ロックミシン |
JP6433315B2 (ja) * | 2015-01-26 | 2018-12-05 | 蛇の目ミシン工業株式会社 | ロックミシン |
JP6570943B2 (ja) * | 2015-09-18 | 2019-09-04 | 蛇の目ミシン工業株式会社 | 糸挿入器 |
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2011
- 2011-11-28 AU AU2011337783A patent/AU2011337783B2/en active Active
- 2011-11-28 RU RU2013129850/12A patent/RU2571257C2/ru active
- 2011-11-28 JP JP2012546861A patent/JP5330607B2/ja active Active
- 2011-11-28 DE DE112011103955.7T patent/DE112011103955B4/de active Active
- 2011-11-28 WO PCT/JP2011/077399 patent/WO2012073893A1/ja active Application Filing
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2013
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JPS58198385A (ja) * | 1982-05-14 | 1983-11-18 | ジューキ株式会社 | ミシンにおけるル−パ−の糸通し装置 |
JP2008237551A (ja) * | 2007-03-27 | 2008-10-09 | Juki Corp | ミシン |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021106252A1 (ja) * | 2019-11-28 | 2021-06-03 | 株式会社鈴木製作所 | ミシンの糸通し装置 |
AU2020392385B2 (en) * | 2019-11-28 | 2022-10-13 | Suzuki Manufacturing, Ltd. | Sewing machine threading device |
US11732390B2 (en) | 2019-11-28 | 2023-08-22 | Suzuki Manufacturing, Ltd. | Sewing machine threading device |
Also Published As
Publication number | Publication date |
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US8939097B2 (en) | 2015-01-27 |
RU2013129850A (ru) | 2015-01-10 |
US20130269579A1 (en) | 2013-10-17 |
AU2011337783B2 (en) | 2015-09-17 |
JP5330607B2 (ja) | 2013-10-30 |
RU2571257C2 (ru) | 2015-12-20 |
JPWO2012073893A1 (ja) | 2014-05-19 |
AU2011337783A1 (en) | 2013-05-02 |
DE112011103955T5 (de) | 2013-08-29 |
DE112011103955B4 (de) | 2018-03-15 |
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