CN103696163B - 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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- CN103696163B CN103696163B CN201310632850.9A CN201310632850A CN103696163B CN 103696163 B CN103696163 B CN 103696163B CN 201310632850 A CN201310632850 A CN 201310632850A CN 103696163 B CN103696163 B CN 103696163B
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- China
- Prior art keywords
- eedle
- hooking mechanism
- looper
- connecting rod
- wire loop
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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 band Sewing machines of this looper string-hooking mechanism.
Background technology
In international standard (ISO4915), stitching represents by three bit digital.First digit is used for distinguishing the stitch types of different stage, is divided into six grades, namely 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 that the coil formed by one or a few needlework and self wears and formed.Have the stitching of 101,102,103,104,105,107 and 108 7 types.
As Fig. 1 a-1f, existing single needle single thread chain type sewing machine 101 stitching forming member be rotary hook, 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 when extreme lower position is gone up and forms wire loop, and wire loop is hooked (Fig. 1 a) by the rotary hook be rotated counterclockwise immediately;
(2) sewing is exited in eedle rising, and rotary hook elongates and expands wire loop, slides to middle part at wire loop, and feed dog rises, and starts to push sewing (Fig. 1 b);
(3) feed dog pushes a needle gage, eedle secondary puncture sewing, and now rotary hook rotates 180 ° (Fig. 1 c);
(4) eedle forms wire loop again from extreme lower position is gone up, and rotary hook continues motion, prepares again to hook up straight needlework ring (Fig. 1 d);
(5), when rotary hook turns over 360 °, second time hooks wire loop and elongates and expands wire loop, makes new wire loop penetrate old wire loop (Fig. 1 e);
(6) rotary hook continues motion, and old wire loop is from slippage rotary hook and be enclosed within by (Fig. 1 f) on the new wire loop that hooks;
Old wire loop is tightened up in now thread take-up tension lever rising, completes a unit of single thread chain stitch.So go round and begin again and just define continuous print single thread chain stitch.
The Sewing machines effect that existing rotary hook forms structure as 101 stitchings is relatively fixing, can not handoff functionality and effect.But when making thick material, eedle can depart from by the obstruction of sewing, and its structure takies because of rotary hook position, can not install needle protection device, easily cause broken needle to break in hook line direction.
Summary of the invention
For the deficiencies in the prior art, object of the present invention is intended to provide a kind of structure simple and the looper string-hooking mechanism taking up room less.
There is a need 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 kind of looper string-hooking mechanism, it comprise be connected with external driver device connecting portion, hook line portion and elastic component.Hook line portion and comprise the connecting rod be connected with connecting portion and the needle tip be connected with connecting rod.Elastic component is arranged at and hooks line portion towards the one side of rotation section and the free end comprising protruding end and extend to form with the one end by protruding end.Protruding end is arranged at the one end near needle tip and protrudes from free end place plane, the wire loop formed during for being punctured by eedle is limited to its one end be connected with free end, and also again interts for eedle for wire loop being released into its other end away from free end.
Hook line portion vertically to be extended to form by one end of connecting portion.
Connecting rod is connected with connecting portion, and needle tip tilts to away from connecting rod direction away from the end of connecting rod.
Connecting rod is connected with the second connecting portion, and needle tip tilts to away from connecting rod direction away from the end of connecting rod.
Hook bottom surface, line portion to cave inward formation accepting groove.
The two ends that this accepting groove is relative are symmetrically arranged with some stage portion, and the distance often between relative two stage portion is different.
This elastic component to be arranged at separably in this accepting groove and to be 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 carry out first time puncture time, hook line portion and penetrate by the first side of eedle wire loop that eedle formed and carry out moving to eedle second side when second time punctures at eedle, intert in the wire loop of formation for the first time for eedle.
For achieving the above object two, the present invention adopts following technical scheme:
A kind of Sewing machines, it comprises feed dog, the eedle being arranged at the relative both sides of feed dog respectively and looper string-hooking mechanism, this looper string-hooking mechanism comprise be connected with external drive connecting portion, hook line portion and elastic component.Hook line portion and comprise the connecting rod be connected with connecting portion and the needle tip be connected with connecting rod.Elastic component is arranged at and hooks line portion towards the one side of rotation section and the free end comprising protruding end and extend to form with the one end by protruding end.Protruding end is arranged at the one end near needle tip and protrudes from free end place plane, the wire loop formed during for being punctured by eedle is limited to its one end be connected with free end, and also again interts for eedle for wire loop being released into its other end away from free end.
Hook line portion vertically to be extended to form by one end of connecting portion.
Connecting rod is connected with connecting portion, and needle tip tilts to away from connecting rod direction away from the end of connecting rod.
Connecting rod is connected with the second connecting portion, and needle tip tilts to away from connecting rod direction away from the end of connecting rod.
Hook bottom surface, line portion to cave inward formation accepting groove.
The two ends that this accepting groove is relative are symmetrically arranged with some stage portion, and the distance often between relative two stage portion is different.
This elastic component to be arranged at separably in this accepting groove and to be 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 carry out first time puncture time, hook line portion and penetrate by the first side of eedle wire loop that eedle formed and carry out moving to eedle second side when second time punctures at eedle, intert in the wire loop of formation for the first time for eedle.
In the present invention looper string-hooking mechanism can eedle first time puncture time be passed by the eedle back side, and elastic component can be used for catching on wire loop and eedle second time puncture time release wire loop for eedle intert.So, looper string-hooking mechanism planar can move and just can complete making of stitching and take certain space without the need to all-directional rotation as rotary hook, and structure is simple and save space and be beneficial to the installation of needle protection device simultaneously.
Accompanying drawing explanation
Fig. 1 a-1f is the operating 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 string-hooking mechanism of looper shown in Fig. 2 another side.
Fig. 4 is the fragmentary cross-sectional view of the string-hooking mechanism of looper shown in Fig. 2.
Fig. 5 a-5e is the operating diagram of the string-hooking mechanism of looper shown in Fig. 2.
Wherein: 100, looper string-hooking mechanism; 99, eedle; 98, sewing; 97, wire loop; 10, connecting portion; 30, line portion is hooked; 31, connecting rod; 32, needle tip; 34, accepting groove; 340, stage portion; 70, elastic component; 71, protruding end; 73, free end.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, 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, itself and eedle 99 are arranged at the relative both sides of feed dog (not shown) respectively, coordinate in order to mutually to move with eedle 99 and make chain-type stitch.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 makes back and forth movement under the effect of external driver device.
Please also refer to Fig. 4, hook line portion 30 and vertically extended to form by one end of connecting portion 10, thus make looper string-hooking mechanism 100 substantially in L-type.Hook the needle tip 32 that line portion 30 comprises connecting rod 31 and is connected with connecting rod 31.Connecting rod 31 is connected with connecting portion 10.Needle tip 32 tilts to away from connecting rod 31 direction away from the end of connecting rod 31.Hook bottom surface, line portion 30 caves inward and forms 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 often between relative two stage portion 340 is unequal.
Elastic component 70 is installed in accepting groove 34 separably, and its relative two ends are connected in two stage portion 340 corresponding in some stage portion 340 respectively.So, user can adjustable elastic part 70 collapsing length as required, to control the elastic force of elastic component 70.In addition, elastic component 70 also can be mounted easily when non-usage and dismounting.Elastic component 70 comprises protruding end 71 and free end 73.Protruding end 71 is semicircular in shape substantially, and its protrusion is formed at elastic component 70 one end near needle tip 32.Free end 73 is rectilinear end in the present embodiment, and it is arranged between protruding end 71 and connecting portion 10.Elastic component 70 is made by recovering other material elastically-deformable.In the present embodiment, elastic component 70 is elasticity steel wire.Understandably, in some other embodiment, the shape of protruding end 71 also can be determined according to demand, such as arc or 3/4 circle etc.
Please also refer to Fig. 5 a-5e, below for looper string-hooking mechanism 100 XZ move in plane make 101 stitchings and be described in detail to its operation principle in reference axis.Wherein, in this reference axis, arrow direction is the forward of each axle.Wherein, looper string-hooking mechanism 100 can be other movement locus and is applicable to various Sewing machines type, in order to make 101 stitchings.
Operationally, eedle 99 is along Y-axis negative sense puncture sewing 98, go up after moving to extreme lower position and form wire loop 97 in its first side (hereinafter referred to as the back side) near X-axis forward, looper string-hooking mechanism 100 moves along the first direction parallel with Z axis forward and penetrates wire loop 97, and wire loop 97 slides along the protruding end 71 of elastic component 70 and blocks the junction being 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 direction parallel with X-axis negative sense, and moves to second side (hereinafter referred to as front) of eedle 99 near X-axis negative sense by eedle 99 back side, namely allows pin (as Fig. 5 a-5c).Now, feed dog pushes sewing 98 and to advance a needle gage.Eedle 99 second time is along Y-axis negative sense decline puncture sewing 98, and looper string-hooking mechanism 100 is along the third direction rollback contrary with first direction, and wire loop 97 is slided to hook line portion 30 near one end of needle tip 32 near one end of connecting rod 31 by hook line portion 30.In the 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 and extrudes and curve inwardly (as Fig. 5 d).When wire loop 97 slips over the peak of protruding end 71, wire loop 97 is also slided into protruding end 71 near the other end of needle tip 32 and forms the wire loop 97 at oblique angle by protruding end 71 tension force release fast.Eedle 99 passes (as Fig. 5 e) by the wire loop 97 at oblique angle.The effect that wire loop 97 that eedle 99 first time formed locks the wire loop 97 that second time is formed is formed with the motion of above-mentioned step cycle.
More than describing is only make 101 stitchings for looper string-hooking mechanism 100 to be described, 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 limited thereto.
In the present invention, looper string-hooking mechanism 100 can be passed by eedle 99 back side when eedle 99 first time puncture, and it is arranged recover elastically-deformable elastic component 70 can be used for catching on wire loop 97 and when the puncture of eedle 99 second time release wire loop 97 interspersed for eedle 99.So, looper string-hooking mechanism 100 planar can move and just can complete making of stitching and take certain space without the need to all-directional rotation as rotary hook, and structure is simple and save space and be beneficial to the installation of needle protection device simultaneously.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the claims in the present invention.
Claims (7)
1. a looper string-hooking mechanism, itself and eedle are arranged at the relative both sides of feed dog respectively, coordinate in order to mutually to move with eedle and make stitching; Be characterised in that: comprise be connected with external driver device connecting portion, hook line portion and elastic component, hook line portion comprise the connecting rod be connected with connecting portion and the needle tip be connected with connecting rod; Elastic component is arranged at the one side and the free end comprising protruding end and extend to form with the one end by protruding end that hook SCCP connection-oriented portion of line portion; This protruding end is arranged at the one end near needle tip and protrudes from free end place plane, the wire loop formed during for being punctured by eedle is limited to its one end be connected with free end, and also again interts for eedle for wire loop being released into its other end away from free end; Hook bottom surface, line portion to cave inward formation accepting groove, the two ends that this accepting groove is relative are symmetrically arranged with some stage portion, and the distance often between relative two stage portion is different; This elastic component to be arranged at separably in this accepting groove and to be connected between corresponding two stage portion.
2. looper string-hooking mechanism as claimed in claim 1, is characterized in that: hook line portion and vertically extended to form by one end of connecting portion.
3. looper string-hooking mechanism as claimed in claim 1, it is characterized in that: connecting rod is connected with connecting portion, needle tip tilts to away from connecting rod direction away from the end of connecting rod.
4. looper string-hooking mechanism as claimed in claim 1, is characterized in that: this elastic component is made by recovering elastically-deformable elastic material.
5. looper string-hooking mechanism as claimed in claim 1, it is characterized in that: this protruding end is semi-circular shape, free end is linearity.
6. looper string-hooking mechanism as claimed in claim 1, it is characterized in that: when eedle carry out first time puncture time, hook line portion penetrate by the first side of eedle wire loop that eedle formed and carry out moving to eedle second side when second time punctures at eedle, intert in the wire loop of formation for the first time for eedle.
7. a Sewing machines, is characterized in that: comprise feed dog, the eedle being arranged at the relative both sides of feed dog respectively and looper string-hooking mechanism, and this looper string-hooking mechanism is the looper string-hooking mechanism in above-mentioned 1-6 described in any one claim.
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 CN103696163A (en) | 2014-04-02 |
| CN103696163B true CN103696163B (en) | 2015-07-22 |
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| 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 |
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| CN (1) | CN103696163B (en) |
Families Citing this family (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 |
| CN108049019B (en) * | 2018-01-05 | 2023-08-18 | 宜宾海丝特纤维有限责任公司 | Automatic braiding machine |
| CN113089201B (en) * | 2019-12-23 | 2022-06-17 | 微创投资控股有限公司 | Thread guide device and suture apparatus |
Citations (5)
| 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 |
| CN101575775A (en) * | 2008-05-08 | 2009-11-11 | 株式会社森本制作所 | Pendulum looper drawing-out device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-11-30 CN CN201310632850.9A patent/CN103696163B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| CN101575775A (en) * | 2008-05-08 | 2009-11-11 | 株式会社森本制作所 | Pendulum looper drawing-out device |
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| Publication number | Publication date |
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| CN103696163A (en) | 2014-04-02 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20150722 Termination date: 20191130 |