JPH0711737Y2 - Needle penetration weakening device for overlock sewing machine - Google Patents
Needle penetration weakening device for overlock sewing machineInfo
- Publication number
- JPH0711737Y2 JPH0711737Y2 JP1987070712U JP7071287U JPH0711737Y2 JP H0711737 Y2 JPH0711737 Y2 JP H0711737Y2 JP 1987070712 U JP1987070712 U JP 1987070712U JP 7071287 U JP7071287 U JP 7071287U JP H0711737 Y2 JPH0711737 Y2 JP H0711737Y2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- sewing machine
- needle plate
- overlock sewing
- feed
- 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.)
- Expired - Lifetime
Links
- 238000009958 sewing Methods 0.000 title claims description 34
- 230000003313 weakening effect Effects 0.000 title claims description 5
- 230000035515 penetration Effects 0.000 title description 11
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 239000004744 fabric Substances 0.000 description 21
- 241000282472 Canis lupus familiaris Species 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 230000001141 propulsive effect Effects 0.000 description 5
- 238000009940 knitting Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案はオーバーロックミシンにおいて、針板と前後送
り歯のそれぞれの針板上面と前後送り歯の歯面のみを、
針の上下運動方向における針板上面の垂線に対する傾斜
角度が大きくなる方向に傾斜せしめたオーバーロックミ
シンの針貫通力弱化装置に関するものである。[Detailed Description of the Invention] (Industrial field of application) The present invention relates to an overlock sewing machine in which only the upper surface of the needle plate and the front and rear feed dogs and the tooth surfaces of the front and rear feed dogs are
The present invention relates to a needle penetrating force weakening device for an overlock sewing machine that is inclined in a direction in which an inclination angle with respect to a vertical line of a needle plate upper surface in a vertical movement direction of the needle is increased.
（従来の技術） 従来、オーバーロックミシンの針板および前後送り歯は
水平状態となっており、針の運動方向は針板上面の垂線
に対して主として23°の傾斜角度を有する。ところが、
近時においては生地に対する貫通力を増強させるため
に、針の上下運動方向における針板上面の垂線に対する
傾斜角度は20°程度に鋭角化する傾向にある。(Prior Art) Conventionally, the needle plate and the front and rear feed dogs of an overlock sewing machine are in a horizontal state, and the movement direction of the needle mainly has an inclination angle of 23 ° with respect to the vertical line of the upper surface of the needle plate. However,
In recent years, in order to enhance the penetrating force to the fabric, the inclination angle with respect to the vertical line of the needle plate upper surface in the vertical movement direction of the needle tends to be sharpened to about 20 °.
（考案が解決しようとする問題点） 近時、針の上下運動方向における針板上面の垂線に対す
る傾斜角度が鋭角化し、20°程度となったオーバーロッ
クミシンでは、針の生地への貫通力が生地に集中化して
働く。そのため、特にテープヤーン編生地等を縫製する
場合、このテープヤーン編生地等が針板の針落ち孔へ針
に追随して落ち込み、針糸のループ動作を妨害し、オー
バーロック縫いとしての縫目構成ができないという問題
点があった。(Problems to be solved by the invention) Recently, in the overlock sewing machine where the angle of inclination with respect to the vertical line of the needle plate upper surface in the vertical movement direction of the needle is sharpened to about 20 °, the needle penetration force to the cloth is Work concentrated on the dough. Therefore, especially when sewing tape yarn knitting material, etc., this tape yarn knitting material, etc. falls into the needle drop hole of the needle plate following the needle, obstructs the loop operation of the needle thread, and stitches as overlock stitches. There was a problem that it could not be configured.
また、針によって押込まれて落ち込んだ生地にルーパー
が接触し、ルーパーの破損を来たしたり、針の折損等の
支障を起こす欠点があった。Further, there is a drawback that the looper comes into contact with the material that has been pushed down by the needle and has fallen, resulting in damage to the looper and breakage of the needle.
本考案は針の上下運動方向における針板上面の垂線に対
する傾斜角度を大きくする方向に、針板と前後送り歯の
それぞれの針板上面と前後送り歯の歯面のみを傾斜させ
て、針の生地に対する貫通力を弱化するオーバーロック
ミシンの針貫通力弱化装置を提供することを目的とす
る。The present invention tilts only the tooth plate upper surface of the needle plate and the front and rear feed teeth, and the tooth surfaces of the front and rear feed teeth in the direction of increasing the inclination angle with respect to the vertical line of the needle plate upper surface in the vertical movement direction of the needle. An object of the present invention is to provide a needle penetration force weakening device for an overlock sewing machine that weakens the penetration force for cloth.
（問題点を解決するための手段） この目的を達成するために、本考案はオーバーロックミ
シンにおいて、針板と前後送り歯のそれぞれの針板上面
と前後送り歯の歯面のみを、針の上下運動方向における
針板上面の垂線に対する傾斜角度が大きくなる方向に傾
斜せしめた構造とした。(Means for Solving the Problems) In order to achieve this object, in the present invention, in an overlock sewing machine, only the upper surface of the needle plate and the front and rear feed dogs of the needle plate and the tooth surface of the front and rear feed dogs are provided. The structure is inclined so that the angle of inclination with respect to the perpendicular of the upper surface of the needle plate in the vertical movement direction increases.
（作用） オーバーロックミシンの針板１と前後送り歯2,3のそれ
ぞれの針板１上面および前後送り歯2,3の歯面のみを針
棒５先端の針６の上下運動方向における針板１上面の垂
線に対する傾斜角度が大となる傾斜状としたから、生地
16を貫通する針６の推進力Ｆの垂直分力としての貫通力
F2を弱めることができる。(Operation) Only the upper surface of the needle plate 1 of the overlock sewing machine and the needle plates 1 of the front and rear feed teeth 2 and 3 and the tooth surfaces of the front and rear feed teeth 2 and 3 are the needle plate in the vertical movement direction of the needle 6 at the tip of the needle bar 5. 1 Since it has an inclined shape with a large inclination angle with respect to the vertical line of the upper surface,
Penetration force as vertical component force of propulsive force F of needle 6 penetrating 16
F 2 can be weakened.
また、生地16を貫通する針６の推進力Ｆの水平分力を大
きくし、生地16を前方へ移動させる力をより強く働か
せ、生地16が針落ち孔1aへ落ち込むことを防止すること
ができる。Further, the horizontal component force of the propulsive force F of the needle 6 penetrating the cloth 16 can be increased, and the force for moving the cloth 16 forward can be made stronger to prevent the cloth 16 from falling into the needle drop hole 1a. .
（実施例） 以下に、本考案に係るオーバーロックミシンの針貫通力
弱化装置の一例を示した添付図面に基づいて詳細に説明
する。(Example) Hereinafter, a needle penetration force weakening device for an overlock sewing machine according to the present invention will be described in detail with reference to the accompanying drawings.
第１図はオーバーロックミシンの公知の通り調節機構と
本考案の針板と前送り歯、後送り歯とを組合せた本考案
装置を示す要部側面図で、第２図は従来機のオーバーロ
ックミシンによる縫製時の状態を示す要部断面図であ
る。第３図は本考案装置による縫製時の状態を示す要部
断面図で、第４図は従来機のオーバーロックミシンの針
貫通力を示す成分分解図、第５図は本考案装置の針貫通
力を示し成分分解図である。FIG. 1 is a side view of a main part of a device of the present invention in which an adjusting mechanism, a needle plate of the present invention, a front feed dog, and a rear feed tooth are combined as is well known in an overlock sewing machine, and FIG. It is a principal part sectional view which shows the state at the time of sewing by a lock sewing machine. FIG. 3 is a cross-sectional view of essential parts showing a state of sewing by the device of the present invention, FIG. 4 is an exploded view of components showing needle penetration force of an overlock sewing machine of a conventional machine, and FIG. 5 is needle penetration of the device of the present invention. It is a component decomposition figure which shows force.
第１図に示す符号１はオーバーロックミシンの傾斜状針
板で、ミシンフレーム15に設備した針板支え４に取付け
られ、針棒５先端の針６の上下運動方向における針板１
上面の垂線に対する傾斜角度を大きくする方向に、傾斜
させたものである。即ち、この針板１の上面をミシンフ
レーム15の前方から後方へ生地の進行方向に行くにした
がって高くなるよう傾斜を設ける。そして、生地に作用
する針６の推進力Ｆの垂直分力F2としての貫通力を従来
機のオーバーロックミシンに作用する同垂直分力F1より
小さくするようにしたものである。Reference numeral 1 shown in FIG. 1 denotes an inclined needle plate of an overlock sewing machine, which is attached to a needle plate support 4 provided on a sewing machine frame 15 and has a needle plate 1 in the vertical movement direction of a needle 6 at the tip of a needle bar 5.
It is tilted in a direction in which the tilt angle with respect to the vertical line of the upper surface is increased. That is, the upper surface of the needle plate 1 is inclined so as to be higher from the front of the sewing machine frame 15 to the rear thereof in the advancing direction of the cloth. Then, the penetrating force as the vertical component force F 2 of the propulsive force F of the needle 6 acting on the cloth is made smaller than the vertical component force F 1 acting on the overlock sewing machine of the conventional machine.
符号２はこの針板１上面と同様に歯面を傾斜させた傾斜
状前送り歯で、前記同様に歯面を傾斜させた傾斜状後送
り歯３と協働して生地を生地の進行方向へ導く役目を果
たす。Reference numeral 2 is an inclined front feed tooth whose tooth surface is inclined similarly to the upper surface of the needle plate 1, and cooperates with an inclined rear feed tooth 3 whose tooth surface is inclined similarly to the above, to move the cloth in the traveling direction of the cloth. Play a role in leading to.
針板支え４は、針板１の針落ち孔1aを正規位置に保持
し、針板１を固定するものである。針棒５は、下端に針
６を装着し、ルーパ（図示せず）のループと相俟ってオ
ーバーロックミシンとしての縫目を構成するものであ
る。The needle plate support 4 holds the needle drop hole 1a of the needle plate 1 at a regular position and fixes the needle plate 1. The needle bar 5 has a needle 6 attached to the lower end thereof and constitutes a stitch as an overlock sewing machine in cooperation with a loop of a looper (not shown).
オーバーロックミシンでは、オーバーロックミシン駆動
運動の枢軸であるクランクシャフト７の回転運動を、ク
ランクシャフト７の左端に嵌入された角駒８でシャフト
７よりの回転運動を上下運動に変換し、前後送り台９に
伝達する。この前後送り台９には、その先端に前記した
針板１上面と同方向に歯面が傾斜した前送り歯２、後送
り歯３が取付けられている。この前後送り台９の前後運
動を前送りリンク10で、送り軸11の揺動運動に変換して
伝える。送り軸11は、クランクシャフト７の回転により
ロッド（図示せず）を介して揺動運動をするもので、そ
の揺動を前送りリンク10に伝える。そして、前後送り台
９の前後送り量の調節は、前送り腕12にスライダ13を移
動させて、前送りリンク10を介して行うものである。ま
た、前後送り台９の傾斜度の微調節は、エキセンピン14
を回転することにより行うものである。符号15は公知の
オーバーロックミシンのフレームで、第２図および第３
図に示す符号16は縫製するための生地である。In the overlock sewing machine, the rotary motion of the crankshaft 7, which is the pivot of the overlock sewing machine driving motion, is converted into the vertical motion by the square piece 8 inserted into the left end of the crankshaft 7, and the vertical motion is performed. It is transmitted to the table 9. A front feed tooth 2 and a rear feed tooth 3 whose tooth surfaces are inclined in the same direction as the upper surface of the needle plate 1 are attached to the front and rear feed bases 9 at the tips thereof. The forward / backward movement of the forward / backward feed base 9 is converted by the forward feed link 10 into the swing movement of the feed shaft 11 and transmitted. The feed shaft 11 swings through a rod (not shown) by the rotation of the crankshaft 7, and transmits the swing to the forward feed link 10. Then, the amount of forward and backward feed of the forward and backward feed base 9 is adjusted by moving the slider 13 to the forward feed arm 12 and through the forward feed link 10. In addition, fine adjustment of the inclination of the front-rear feed table 9 can be done by using the eccentric pin 14
This is done by rotating. Reference numeral 15 is a frame of a known overlock sewing machine, which is shown in FIGS.
Reference numeral 16 shown in the figure is a cloth for sewing.
ここで、針棒５即ち針６の推進力をＦとし、従来機のオ
ーバーロックミシンと本考案の装置での、針６が生地を
貫通する時のこの推進力Ｆの垂直および水平分力につい
て第４図、第５図を用いて説明する。従来機および本考
案装置においては、針棒５先端の針６の上下運動方向に
おける針板１上面の垂線に対する傾斜角度を20°とす
る。（第４図および第５図ではその余角の70°が示され
ている。） 生地16を貫通する力は生地16に対して垂直な分力となる
から、従来機ではこの垂直分力をF1とした場合、F1＝Fc
os20°となる。Here, let F be the propulsive force of the needle bar 5, that is, the vertical and horizontal component force of the propulsive force F when the needle 6 penetrates the cloth in the conventional overlock sewing machine and the device of the present invention. This will be described with reference to FIGS. 4 and 5. In the conventional machine and the device of the present invention, the inclination angle with respect to the perpendicular of the upper surface of the needle plate 1 in the vertical movement direction of the needle 6 at the tip of the needle bar 5 is 20 °. (In Fig. 4 and Fig. 5, the complementary angle of 70 ° is shown.) Since the force that penetrates the fabric 16 is a component force perpendicular to the fabric 16, this vertical component force is used in the conventional machine. When F 1 is set, F 1 = Fc
os becomes 20 °.
また、本考案装置の場合は、針板１の上面をミシンフレ
ーム15の前方から後方へ生地の進行方向に行くにしたが
って高くなるよう傾斜を設け、針板１上面後方の前方に
対する水平方向との傾斜角をαとする。そして、針が生
地を貫通する垂直分力をF2とすれば、F2＝F1−Fsin20°
×tanα＝Ｆ（cos20°−sin20°×tanα）となる。これ
より、針が生地を貫通する垂直分力はF1＞F2となって、
F2はF1よりFsin20°×tanαだけ減少する。Further, in the case of the device of the present invention, the upper surface of the needle plate 1 is inclined so that it becomes higher as it goes from the front side of the sewing machine frame 15 to the rear side in the advancing direction of the cloth, and the upper side of the needle plate 1 is parallel to the front side in the horizontal direction. The inclination angle is α. And, if the vertical component force that the needle penetrates through the fabric is F 2 , then F 2 = F 1 −F sin 20 °
× tanα = F (cos20 ° -sin20 ° × tanα). From this, the vertical component force of the needle penetrating the fabric is F 1 > F 2 ,
F 2 is smaller than F 1 by Fsin 20 ° × tan α.
（考案の効果） 前述のように、針板１と前後送り歯2,3のそれぞれの針
板１上面、前後送り歯2,3の歯面のみを生地進行方向後
方が前方より、針棒５の先端の針６の上下運動方向にお
ける針板１上面の垂線に対する角度が大となる方向に傾
斜させ、針棒５のこの傾斜角度を20°として比較して、
針６の生地貫通力を弱化できる。(Effect of the Invention) As described above, only the upper surface of the needle plate 1 of the needle plate 1 and the front and rear feed dogs 2, 3 and the tooth surfaces of the front and rear feed dogs 2, 3 are arranged such that the rear side in the fabric advancing direction is from the front and the needle bar 5 The tip of the needle 6 is tilted in a direction in which the angle with respect to the vertical line of the upper surface of the needle plate 1 in the vertical movement direction is large, and this tilt angle of the needle bar 5 is set to 20 ° and compared.
The cloth penetration force of the needle 6 can be weakened.
また、そのことにより、生地16が針落ち孔1aへ落ち込む
ことを皆無としたもので、特にテープヤーン編生地等を
縫製する場合、針糸のループ動作を妨害することなく、
オーバーロック縫いとしての縫目構成が支障なくでき
る。Further, as a result, the material 16 is completely prevented from falling into the needle drop hole 1a, particularly when sewing tape yarn knitting material or the like, without interfering with the loop operation of the needle thread,
The stitch structure for overlock stitching can be done without any problems.
それと共に、ルーパーが針によって前記針落ち孔1aへ押
込まれ、落ち込んだ生地に接触することがなく、ルーパ
ーの破損を来たしたり、針の折損等の支障を起こすこと
がない。At the same time, the looper is pushed into the needle drop hole 1a by the needle and does not come into contact with the dropped material, so that the looper is not damaged and the needle is not broken.
添付図面は本考案実施の一例を示したもので、第１図は
公知のオーバーロックミシンの送り調節機構と本考案の
針板と前送り歯、後送り歯との関係を示す要部側面図、
第２図は従来機での縫製状態を示す要部断面図である。
第３図は本考案装置での縫製状態を示した要部断面図、
第４図は従来機の縫製状態における生地への針推進力の
針貫通力への成分分解図、第５図は本案の縫製状態にお
ける生地への針推進力の針貫通力への成分分解図であ
る。 １……傾斜状針板、1a……針落ち孔、２……傾斜状前送
り歯、３……傾斜状後送り歯、４……針板支え、５……
針棒、６……針、７……クランクシャフト、８……角
駒、９……前後送り台、10……前送りリンク、11……送
り軸、12……前送り腕、13……スライダ、14……エキセ
ンピン、15……ミシンフレーム、16……生地。The attached drawings show an example of the present invention, and FIG. 1 is a side view of a main part showing a relationship between a feed adjusting mechanism of a known overlock sewing machine and a needle plate of the present invention and front and rear feed teeth. ,
FIG. 2 is a sectional view of an essential part showing a sewing state in a conventional machine.
FIG. 3 is a sectional view of essential parts showing a sewing state in the device of the present invention,
FIG. 4 is an exploded view of the components of the needle propulsion force into the fabric into the needle penetration force in the sewing state of the conventional machine, and FIG. 5 is an exploded view of the components of the needle propulsion force into the fabric in the sewing state of the present invention into the needle penetration force. Is. 1 ... Inclined needle plate, 1a ... Needle drop hole, 2 ... Inclined front feed dog, 3 ... Inclined rear feed tooth, 4 ... Needle plate support, 5 ...
Needle bar, 6 ... Needle, 7 ... Crank shaft, 8 ... Square piece, 9 ... Front / rear feed stand, 10 ... Forward feed link, 11 ... Feed shaft, 12 ... Forward feed arm, 13 ... Slider, 14 ...... eccentric pin, 15 ...... sewing machine frame, 16 ...... material.
Claims (1)
後送り歯のそれぞれの針板上面と前後送り歯の歯面のみ
を、針の上下運動方向における針板上面の垂線に対する
傾斜角度が大きくなる方向に傾斜せしめた構造から成る
針貫通力弱化装置。1. In an overlock sewing machine, a direction in which only the upper surfaces of the needle plate and the front and rear feed teeth and the tooth surfaces of the front and rear feed teeth have a greater inclination angle with respect to the vertical line of the needle plate upper surface in the vertical movement direction of the needle. Needle penetrating force weakening device with a slanted structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987070712U JPH0711737Y2 (en) | 1987-05-11 | 1987-05-11 | Needle penetration weakening device for overlock sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987070712U JPH0711737Y2 (en) | 1987-05-11 | 1987-05-11 | Needle penetration weakening device for overlock sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63179971U JPS63179971U (en) | 1988-11-21 |
| JPH0711737Y2 true JPH0711737Y2 (en) | 1995-03-22 |
Family
ID=30912596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987070712U Expired - Lifetime JPH0711737Y2 (en) | 1987-05-11 | 1987-05-11 | Needle penetration weakening device for overlock sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0711737Y2 (en) |
-
1987
- 1987-05-11 JP JP1987070712U patent/JPH0711737Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63179971U (en) | 1988-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0711737Y2 (en) | Needle penetration weakening device for overlock sewing machine | |
| JPH0294785U (en) | ||
| JPH0265897A (en) | Cloth cutter for sewing machine with cutting edge on cloth holding plate | |
| JP2682346B2 (en) | Needle feed / lower feed switching device for sewing machines with needle feed function | |
| JPH08131678A (en) | Top feed sewing machine | |
| JPH05153Y2 (en) | ||
| JPH0424064A (en) | sewing machine | |
| JPS642706Y2 (en) | ||
| JP2511895Y2 (en) | Sewing machine feed dog | |
| JPH0131397B2 (en) | ||
| JPS6055991A (en) | sewing machine presser foot device | |
| JPS60139280A (en) | Safety stitch and safety stitch sewing machine for forming the same | |
| JPH0313981U (en) | ||
| JP2971074B2 (en) | Single thread single thread chain stitching device in overlock sewing machine | |
| JPS59101187A (en) | Walking mechanism of sewing machine | |
| JPH0616609Y2 (en) | Needle bar height adjuster for multi-needle sewing machines | |
| JP2763896B2 (en) | Scoop sewing machine and scoop sewing method | |
| JP3050374U (en) | Cloth foot for sewing machine | |
| JPS6329510Y2 (en) | ||
| JP3841954B2 (en) | Overlock sewing machine | |
| JPH0543115Y2 (en) | ||
| JPH0838766A (en) | Decoration guiding device for sewing machine | |
| JPS59139296A (en) | Upper feed mechanism of sewing machine | |
| JPS6020371Y2 (en) | Lockstitch and lockstitch sewing machine | |
| JPS5964091A (en) | Main sewing and lock stitching sewing machine |