CN103696163A - Looper thread hooking mechanism and sewing machine with looper thread hooking mechanism - Google Patents
Looper thread hooking mechanism and sewing machine with looper thread hooking mechanism Download PDFInfo
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- CN103696163A CN103696163A CN201310632850.9A CN201310632850A CN103696163A CN 103696163 A CN103696163 A CN 103696163A CN 201310632850 A CN201310632850 A CN 201310632850A CN 103696163 A CN103696163 A CN 103696163A
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- hooking mechanism
- eedle
- looper
- looper string
- connecting rod
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Abstract
The invention relates to a looper thread hooking mechanism and a sewing machine with the looper thread hooking mechanism. The looper thread hooking mechanism comprises a connecting part, a thread hooking part and an elastic piece, wherein the connecting part is connected with an external driving device; the thread hooking part comprises a connecting rod connected with the connecting part and a pinpoint part connected with the connecting rod; the elastic piece is arranged on one surface of the thread hooking part facing to a rotating part and comprises a protruded end and a free end; the free end is formed by extending from one end of the protruded end; the protruded end is arranged at the end close to the pinpoint part and is protruded from the plane where the free end is located. The looper thread hooking mechanism provided by the invention can pass through the back of a machine needle when the machine needle is punctured for the first time; the elastic piece is used for hooking a thread ring and releasing the thread ring for the machine needle to puncture when the machine needle is punctured for the second time, so that the looper thread hooking mechanism can finish the sewing of stitches by moving in the plane and does not occupy space by all-dimensional rotating like a rotating hook; the structure is simple, the space is saved and the mounting for a needle protecting device is facilitated.
Description
Technical field
The present invention relates to a kind of looper string-hooking mechanism, particularly a kind of with the Sewing machines with this looper string-hooking mechanism.
Background technology
In international standard (ISO4915), stitching is to represent by three bit digital.First digit is used for distinguishing the stitching type of different stage, is divided into six grades, 100 grades-600 grades.Second and third numeral altogether, is used for distinguishing stitching dissimilar in same rank, totally 88 kinds.100 grades of stitchings are called chain-type stitch.It is to be worn and formed by one or a few needlework and the coil that self forms.Have the stitching of 101,102,103,104,105,107 and 108 7 types.
As Fig. 1 a-1f, what existing single needle single thread chain type sewing machine 101 stitchings formation parts were used is rotary hook, and wherein label 1 is eedle, and label 2 is sewing, and label 3 is rotary hook.The operation principle of rotary hook is:
(1) eedle puncture sewing, moves to and when extreme lower position is gone up, forms wire loop, and the rotary hook that wire loop is rotated counterclockwise immediately hooks that (Fig. 1 a);
(2) sewing is exited in eedle rising, and rotary hook elongates and expands wire loop, at wire loop, slides to middle part, and feed dog rises, and starts to push sewing (Fig. 1 b);
(3) feed dog pushes a needle gage, eedle secondary puncture sewing, now rotary hook Rotate 180 ° (Fig. 1 c);
(4) eedle gos up to start to form wire loop from extreme lower position again, and rotary hook continues motion, prepares again to hook up straight needlework ring (Fig. 1 d);
(5) when rotary hook turns over 360 °, hook for the second time wire loop and elongate expansion wire loop, make new wire loop penetrate old wire loop (Fig. 1 e);
(6) rotary hook continues motion, the slippage be enclosed within (Fig. 1 f) on the new wire loop being hooked from rotary hook of old wire loop;
Old wire loop is tightened up in now thread take-up tension lever rising, completes a unit of single line chain type stitching.So go round and begin again and just formed continuous single line chain type stitching.
The existing Sewing machines effect that forms structure as 101 stitchings with rotary hook is relatively fixing, can not handoff functionality and effect.Yet when making thick material, eedle can be departed from by the obstruction of sewing, its structure takies because of rotary hook position, in hook line direction, needle protection device can not be installed, and easily causes broken needle broken string.
Summary of the invention
For the deficiencies in the prior art, it is a kind of simple in structure and take up room looper string-hooking mechanism less that object of the present invention is intended to provide.
Also be necessary to provide a kind of Sewing machines with this looper string-hooking mechanism.
For achieving the above object one, the present invention adopts following technical scheme:
A looper string-hooking mechanism, it comprises connecting portion, hook line portion and the elastic component being connected with external driver device.Hook line portion and comprise the connecting rod being connected with connecting portion and the needle tip being connected with connecting rod.Elastic component is arranged at and hooks line portion towards the one side of rotation section and comprise the free end that one end of Ji Yuyou protruding end, protruding end extends to form.Protruding end is arranged near one end of needle tip and protrudes from free end place plane, the wire loop forming while being used for eedle to puncture is limited to one end that it is connected with free end, and also for wire loop being released into it, away from the free-ended other end, for eedle, again interts.
Hook line portion is vertically extended to form by one end of connecting portion.
Connecting rod is connected with connecting portion, needle tip away from the end of connecting rod to tilting away from connecting rod direction.
Connecting rod is connected with the second connecting portion, needle tip away from the end of connecting rod to tilting away from connecting rod direction.
Hook the line portion bottom surface formation accepting groove that caves inward.
The two ends that this accepting groove is relative are symmetrically arranged with some stage portion, and the distance between every relative two stage portion is different.
This elastic component is arranged at separably in this accepting groove and is connected between corresponding two stage portion.
Elastic component is made by recovering elastically-deformable elastic material.
Protruding end is semi-circular shape, and free end is linearity.
When eedle punctures for the first time, hook line portion and penetrate the wire loop that eedle forms and when eedle punctures for the second time, move to eedle the second side by the first side of eedle, for eedle, intert in the wire loop of formation for the first time.
For achieving the above object two, the present invention adopts following technical scheme:
A Sewing machines, it comprises feed dog, the eedle that is arranged at respectively the relative both sides of feed dog and looper string-hooking mechanism, this looper string-hooking mechanism comprises connecting portion, hook line portion and the elastic component being connected with external drive.Hook line portion and comprise the connecting rod being connected with connecting portion and the needle tip being connected with connecting rod.Elastic component is arranged at and hooks line portion towards the one side of rotation section and comprise the free end that one end of Ji Yuyou protruding end, protruding end extends to form.Protruding end is arranged near one end of needle tip and protrudes from free end place plane, the wire loop forming while being used for eedle to puncture is limited to one end that it is connected with free end, and also for wire loop being released into it, away from the free-ended other end, for eedle, again interts.
Hook line portion is vertically extended to form by one end of connecting portion.
Connecting rod is connected with connecting portion, needle tip away from the end of connecting rod to tilting away from connecting rod direction.
Connecting rod is connected with the second connecting portion, needle tip away from the end of connecting rod to tilting away from connecting rod direction.
Hook the line portion bottom surface formation accepting groove that caves inward.
The two ends that this accepting groove is relative are symmetrically arranged with some stage portion, and the distance between every relative two stage portion is different.
This elastic component is arranged at separably in this accepting groove and is connected between corresponding two stage portion.
Elastic component is made by recovering elastically-deformable elastic material.
Protruding end is semi-circular shape, and free end is linearity.
When eedle punctures for the first time, hook line portion and penetrate the wire loop that eedle forms and when eedle punctures for the second time, move to eedle the second side by the first side of eedle, for eedle, intert in the wire loop of formation for the first time.
In the present invention, looper string-hooking mechanism can be passed by the eedle back side when eedle punctures for the first time, and elastic component can be used for catching on wire loop and when eedle punctures for the second time, discharge wire loop interspersed for eedle.So, looper string-hooking mechanism can planar move and just can complete making of stitching and take certain space without all-directional rotation as rotary hook, simple in structure and save space and be beneficial to the installation of needle protection device simultaneously.
Accompanying drawing explanation
Fig. 1 a-1f is the work schematic diagram of prior art rotary hook.
Fig. 2 is the structural representation of looper string-hooking mechanism of the present invention.
Fig. 3 is the structural representation of the another side of looper string-hooking mechanism shown in Fig. 2.
Fig. 4 is the fragmentary cross-sectional view of looper string-hooking mechanism shown in Fig. 2.
Fig. 5 a-5e is the work schematic diagram of looper string-hooking mechanism shown in Fig. 2.
Wherein: 100, looper string-hooking mechanism; 99, eedle; 98, sewing; 97, wire loop; 10, connecting portion; 30, hook line portion; 31, connecting rod; 32, needle tip; 34, accepting groove; 340, stage portion; 70, elastic component; 71, protruding end; 73, free end.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described further:
Refer to Fig. 2 and Fig. 3, the present invention relates to a kind of looper string-hooking mechanism 100, it is arranged at respectively the relative both sides of feed dog (not shown) with eedle 99, makes chain-type stitch in order to coordinate with the mutual motion of eedle 99.Looper string-hooking mechanism 100 comprises connecting portion 10, hooks line portion 30 and elastic component 70.Connecting portion 10 is connected with external driver device (not shown) and externally under the effect of drive unit, makes back and forth movement.
Please also refer to Fig. 4, hook line portion 30 is vertically extended to form by one end of connecting portion 10, thereby makes looper string-hooking mechanism 100 substantially be L-type.Hook line portion 30 and comprise connecting rod 31 and the needle tip 32 being connected with connecting rod 31.Connecting rod 31 is connected with connecting portion 10.Needle tip 32 away from the end of connecting rod 31 to tilting away from connecting rod 31 directions.Hook line portion 30 bottom surfaces cave inward and form the accepting groove 34 of strip.The two ends that accepting groove 34 is relative are symmetrically arranged with some stage portion 340.Wherein, the distance between every relative two stage portion 340 is unequal.
Please also refer to Fig. 5 a-5e, take the flat in-plane moving of looper string-hooking mechanism 100 XZ in reference axis make 101 stitchings and its operation principle is elaborated as example below.Wherein, the forward that in this reference axis, arrow direction is each axle.Wherein, looper string-hooking mechanism 100 can be other movement locus and is applicable to various Sewing machines types, in order to make 101 stitchings.
When work, eedle 99 is along Y-axis negative sense puncture sewing 98, after moving to extreme lower position, go up and form wire loop 97 in its first side (hereinafter to be referred as the back side) near X-axis forward, looper string-hooking mechanism 100 moves and penetrates wire loop 97 along the first direction parallel with Z axis forward, and wire loop 97 slides along the protruding end 71 of elastic component 70 and blocks the junction that is hung on protruding end 71 and free end 73.Eedle 99 rises along Y-axis forward, and looper string-hooking mechanism 100 moves along the second directions parallel with X-axis negative sense, and moves to eedle 99 near second side (hereinafter to be referred as front) of X-axis negative sense by eedle 99 back sides, allows pin (as Fig. 5 a-5c).Now, feed dog pushes sewing 98 needle gage that advances.Eedle 99 is for the second time along Y-axis negative sense decline puncture sewing 98, and looper string-hooking mechanism 100 is along the third direction rollbacks contrary with first direction, and wire loop 97 slides near one end of needle tip 32 to hooking line portion 30 near one end of connecting rod 31 by hooking line portion 30.In this process, when wire loop 97 slides into protruding end 71 by free end 73, the cambered surface of protruding end 71 is subject to wire loop 97 tension force push and curve inwardly (as Fig. 5 d).When wire loop 97 slips over the peak of protruding end 71, protruding end 71 tension force discharge and fast wire loop 97 are slided into protruding end 71 near the other end of needle tip 32 and form the wire loop 97 at oblique angle.Eedle 99 passes (as Fig. 5 e) in the wire loop 97 at oblique angle.Thereby the effect of the wire loop 97 that wire loop 97 locks that form for the first time with above-mentioned step cycle motion formation eedle 99 form for the second time.
More than describing is only to take looper string-hooking mechanism 100 to make 101 stitchings and describe as example, and the movement locus of looper string-hooking mechanism 100 and the kind of making stitching all can be determined according to demand, are not so limited.
In the present invention, looper string-hooking mechanism 100 can be passed by eedle 99 back sides when eedle 99 punctures for the first time, and the elastically-deformable elastic component 70 that recovers arranging on it can be used for catching on wire loop 97 and when eedle 99 punctures for the second time, discharge wire loop 97 interspersed for eedle 99.So, looper string-hooking mechanism 100 can planar move and just can complete making of stitching and take certain space without all-directional rotation as rotary hook, simple in structure and save space and be beneficial to the installation of needle protection device simultaneously.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion all should belong to the protection domain of the claims in the present invention within.
Claims (10)
1. a looper string-hooking mechanism, it is arranged at respectively with eedle the both sides that feed dog is relative, in order to mutually to move and coordinate and make stitching with eedle; Be characterised in that: comprise the connecting portion, hook line portion and the elastic component that are connected with external driver device, hook line portion and comprise the connecting rod being connected with connecting portion and the needle tip being connected with connecting rod; Elastic component is arranged at and hooks line portion towards the one side of rotation section and comprise the free end that one end of Ji Yuyou protruding end, protruding end extends to form; This protruding end is arranged near one end of needle tip and protrudes from free end place plane, the wire loop forming while being used for eedle to puncture is limited to one end that it is connected with free end, and also for wire loop being released into it, away from the free-ended other end, for eedle, again interts.
2. looper string-hooking mechanism as claimed in claim 1, is characterized in that: hook line portion is vertically extended to form by one end of connecting portion.
3. looper string-hooking mechanism as claimed in claim 1, is characterized in that: connecting rod is connected with connecting portion, needle tip away from the end of connecting rod to tilting away from connecting rod direction.
4. looper string-hooking mechanism as claimed in claim 1, is characterized in that: hook the line portion bottom surface formation accepting groove that caves inward.
5. looper string-hooking mechanism as claimed in claim 4, is characterized in that: the two ends that this accepting groove is relative are symmetrically arranged with some stage portion, and the distance between every relative two stage portion is different.
6. looper string-hooking mechanism as claimed in claim 5, is characterized in that: this elastic component is arranged at separably in this accepting groove and is connected between corresponding two stage portion.
7. looper string-hooking mechanism as claimed in claim 1, is characterized in that: this elastic component is made by recovering elastically-deformable elastic material.
8. looper string-hooking mechanism as claimed in claim 1, is characterized in that: this protruding end is semi-circular shape, and free end is linearity.
9. looper string-hooking mechanism as claimed in claim 1, it is characterized in that: when eedle punctures for the first time, hook line portion and penetrate the wire loop that eedle forms and when eedle punctures for the second time, move to eedle the second side by the first side of eedle, for eedle, intert in the wire loop of formation for the first time.
10. a Sewing machines, is characterized in that: comprise feed dog, the eedle that is arranged at respectively the relative both sides of feed dog and looper string-hooking mechanism, this looper string-hooking mechanism is the looper string-hooking mechanism described in any one claim in above-mentioned 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632850.9A CN103696163B (en) | 2013-11-30 | 2013-11-30 | Looper thread hooking mechanism and sewing machine with looper thread hooking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632850.9A CN103696163B (en) | 2013-11-30 | 2013-11-30 | Looper thread hooking mechanism and sewing machine with looper thread hooking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103696163A true CN103696163A (en) | 2014-04-02 |
| CN103696163B CN103696163B (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310632850.9A Expired - Fee Related CN103696163B (en) | 2013-11-30 | 2013-11-30 | Looper thread hooking mechanism and sewing machine with looper thread hooking mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN103696163B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049020A (en) * | 2018-01-05 | 2018-05-18 | 宜宾海丝特纤维有限责任公司 | A kind of winding mechanism |
| CN108049019A (en) * | 2018-01-05 | 2018-05-18 | 宜宾海丝特纤维有限责任公司 | A kind of automatic volume winch |
| CN113089201A (en) * | 2019-12-23 | 2021-07-09 | 上海微创医疗器械（集团）有限公司 | Thread guide device and suture apparatus |
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|---|---|---|---|---|
| US5125351A (en) * | 1990-11-23 | 1992-06-30 | Kansai Special U.S.A. Corp. | Thread trimmer system for in-line chain stitch cylinder bed sewing machine |
| CN1148644A (en) * | 1995-08-09 | 1997-04-30 | 胜家公司 | Changing-over mechanism for looping device of chain-stitch machine |
| CN2370040Y (en) * | 1999-05-26 | 2000-03-22 | 朱云山 | Closed sewing machine shuttle |
| CN1321804A (en) * | 2000-04-28 | 2001-11-14 | 大和缝纫机制造株式会社 | Bent needle leading-out device for sewing machine |
| JP2002000984A (en) * | 2000-06-23 | 2002-01-08 | Morimoto Mfg Co Ltd | Looper structure for double ring stitch picot sewing machine |
| JP2002325993A (en) * | 2001-05-02 | 2002-11-12 | Morimoto Mfg Co Ltd | Looper structure in multi-thread chain stitch picot sewing machine |
| CN101575775A (en) * | 2008-05-08 | 2009-11-11 | 株式会社森本制作所 | Pendulum looper drawing-out device |
-
2013
- 2013-11-30 CN CN201310632850.9A patent/CN103696163B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5125351A (en) * | 1990-11-23 | 1992-06-30 | Kansai Special U.S.A. Corp. | Thread trimmer system for in-line chain stitch cylinder bed sewing machine |
| CN1148644A (en) * | 1995-08-09 | 1997-04-30 | 胜家公司 | Changing-over mechanism for looping device of chain-stitch machine |
| CN2370040Y (en) * | 1999-05-26 | 2000-03-22 | 朱云山 | Closed sewing machine shuttle |
| CN1321804A (en) * | 2000-04-28 | 2001-11-14 | 大和缝纫机制造株式会社 | Bent needle leading-out device for sewing machine |
| JP2002000984A (en) * | 2000-06-23 | 2002-01-08 | Morimoto Mfg Co Ltd | Looper structure for double ring stitch picot sewing machine |
| JP2002325993A (en) * | 2001-05-02 | 2002-11-12 | Morimoto Mfg Co Ltd | Looper structure in multi-thread chain stitch picot sewing machine |
| CN101575775A (en) * | 2008-05-08 | 2009-11-11 | 株式会社森本制作所 | Pendulum looper drawing-out device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049020A (en) * | 2018-01-05 | 2018-05-18 | 宜宾海丝特纤维有限责任公司 | A kind of winding mechanism |
| CN108049019A (en) * | 2018-01-05 | 2018-05-18 | 宜宾海丝特纤维有限责任公司 | A kind of automatic volume winch |
| CN108049019B (en) * | 2018-01-05 | 2023-08-18 | 宜宾海丝特纤维有限责任公司 | Automatic braiding machine |
| CN113089201A (en) * | 2019-12-23 | 2021-07-09 | 上海微创医疗器械（集团）有限公司 | Thread guide device and suture apparatus |
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| Publication number | Publication date |
|---|---|
| CN103696163B (en) | 2015-07-22 |
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Granted publication date: 20150722 Termination date: 20191130 |