CN1054412C - Thread cutting device of two-needle sewing machine - Google Patents
Thread cutting device of two-needle sewing machine Download PDFInfo
- Publication number
- CN1054412C CN1054412C CN95104049A CN95104049A CN1054412C CN 1054412 C CN1054412 C CN 1054412C CN 95104049 A CN95104049 A CN 95104049A CN 95104049 A CN95104049 A CN 95104049A CN 1054412 C CN1054412 C CN 1054412C
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- mentioned
- knife
- connecting rod
- sewing
- needle
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Abstract
The present invention provides a thread cutting device for a two-needle sewing machine, which can regulate a thread cutting device easily and fast following the regulation of the needle gauge between both needles, and the production efficiency can be improved. The present invention is composed of a connecting rod 3, a cutter driving device 4, a rotating member 7, a fixing device 20 and a connecting rod 6, wherein the connecting rod 3 is used for connecting cutter supporting platforms 1 and 2 which support a first movable cutter C1 and a second movable cutter C2 in rotation, and the connecting rod 3 is telescopic according to the change of the position of each of rotating shuttles A1 and A2. The cutter driving device 4 is provided with an arm 9 which can carry out a reciprocating rotation for once by connecting with a lower shaft of the sewing machine when a sewing operation ends; in the two-needle sewing machine, a connecting device which is used for connecting the cutter supporting platform 2 and the cutter driving device 4 is made into the rotating member 7 which can be rotated around a center, namely the rotating shaft of the second movable cutter; the fixing device 20 is used for fixing the rotating member 7 with an adjustable rotating position to the cutter supporting platform 2, and the rotating member 7 is connected with the cutter driving device 4 by the connecting rod 6.
Description
The present invention relates to a kind of cutting facility of two-needle sewing machine, in more detail, be with the sort of along with adjusting to the pin width of cloth of two pins, can be easily and promptly carry out the 1st relevant with the cutting facility of the two-needle sewing machine of the position adjustments operation of the 2nd movable knife.
The following describes prior art.
As shown in Figure 4, have two sewing needle N
1, N
2Two-needle sewing machine M it sewing needle below revolution shuttle (horizontal rotation shuttle) A is being set respectively
1, A
2, upper thread and each bottom line that turns round the shuttle seizure that each sewing needle is kept are staggered, just can form two parallel needle trackings (not having expression among the figure) on the clothing that is sewed.
And two-needle sewing machine M is by crossover fixation sewing needle N
1, N
2Pin folder member Na just can be its pin width of cloth, be equalization about amplitude that needle tracking forms becomes.
Na changes under the occasion of the pin width of cloth at this pin of exchange folder member, and nature is to these sewing needles N
1, N
2Form the revolution shuttle A of needle tracking
1, A
2The position must be changed respectively.
And as described above at change revolution rib A
1, A
2The position time, the also essential position of regulating the cutting facility of Sewing machines, cutting facility is to be used for when sewing finishing, each root sewing needle with turn round that each bar sewing thread between the shuttle cuts off.
Fig. 5 is the cutting facility of expression two-needle sewing machine, the B among the figure
1, B
2Be respectively bearing and turning shuttle A
1, A
2The holder of revolution shuttle, these revolution shuttle holders B
1, B
2Can be approaching mutually, leave, and can turn round shuttle A thus
1, A
2Between distance adjustment.
C
1Be the 1st movable knife, C
2Be the 2nd movable knife, these two movable knife C
1, C
2Can be rotationally by being arranged on above-mentioned revolution shuttle holder B
1, B
2On knife supporting station 1,2 supporting.
The 3rd, the connecting rod that each above-mentioned movable knife supporting station 1,2 couples together, connecting rod 3 is by the connecting elements 3a and the 3b that form two bodies with slotted hole vis-a-vis; Be arranged on be fixed together set bolt 8 in the slotted hole of usefulness of these connecting elementss; And in the inside of connecting rod 3, the hold-down nut (not having expression among the figure) that is screwed on this set bolt 8 constitutes, by changing the overlap length of each connecting elements 3a, 3b, the total length of regulating connecting rod 3 with regard to flexible ground.
On the other hand, the 4th, the trimming signal when knife drive unit, this knife drive unit 4 can be according to sewing finishing makes the arm 9 that links to each other with the lower shaft 10 of Sewing machines back and forth rotate once as shown by arrows.
The 11st, as the link rod of the jockey of arm 9 that connects knife drive unit 4 and knife supporting station 2, this link rod 11 by threaded excellent 11a and be threaded excellent 11b, 11c with nut of tightening with the two ends of this threaded excellent 11a constitute.By turning round the nut of this be threaded excellent 11b, 11c, with regard to the total length of flexible ground adjusting link rod 11.
The yarn cutting device of two-needle sewing machine with said structure is when accepting the trimming signal, and knife drive unit 4 makes arm 9 rotate towards counter-clockwise direction, link rod 11 is moved towards the below among the figure, thereby knife supporting station 2 is rotated toward the clockwise direction.
And, by the rotation of this knife supporting station 2,, knife supporting station 1 is rotated towards clockwise, thereby make the 1st and the 2nd movable knife C that is fixed on these knife supporting stations 1,2 by connecting rod 3
1, C
2Towards each revolution shuttle A
1, A
2Move, by the 1st and the 2nd movable knife C
1, C
2Respectively the sewing thread between each sewing needle and the revolution shuttle (not having expression among the figure) is caught.
Then, when knife drive unit 4 when clockwise rotates and revert to the home position, also make the 1st and the 2nd movable knife C
1, C
2Revert to home position (i.e. position shown in the figure), return when mobile, just can clamp the suture of sewing and cut off together by the fixedly knife that does not have expression among these movable knives and the figure at this.
Below, the adjusting operation that the pin amplitude variation along with the cutting facility of this Sewing machines more carries out is described.
With the pin amplitude variation of Sewing machines more accordingly, in order to change two revolution shuttle A
1, A
2Between distance and turn round shuttle holder B
1, B
2Position adjustments the time, essential total length of regulating connecting rod 3 and link rod 11.
That is, if turn round shuttle holder B
1, B
2Position adjustments, then be arranged on the 1st above them and the 2nd movable knife C
1, C
2Distance also change, just make the 1st and the 2nd movable knife C
1, C
2Change with the position relation (angle X and Y) of connecting rod 3.
Thus, the 1st and the 2nd movable knife C
1, C
2Rotary motion trace just depart from sewing thread, two movable knife C
1, C
2Just can not cut off sewing thread.
Therefore, must with revolution shuttle holder B
1, B
2Position adjustments make connecting rod 3 flexible accordingly, and regulate the 1st and the 2nd movable knife C
1, C
2Position relation with connecting rod 3.
On the other hand, when by two revolution shuttle holder B
1, B
2Position adjustments, make revolution shuttle holder B
2Position when being toward or away from knife drive unit 4 ground and changing, the distance W of knife supporting station 2 and drive unit 4 also changes.
That is, because link rod 11 and knife supporting station 2 are moved along the horizontal direction among the figure together, thereby also essential total length of regulating this link rod 11.Link rod 11 is to rotate for middle heart with the arm 9 of knife drive unit 4.
The cutting facility of the two-needle sewing machine before above-mentioned, because some following problems are arranged, thereby can cause that operating efficiency reduces.
Promptly, when the pin amplitude variation along with Sewing machines more carries out the position adjustment, in the cutting facility of former two-needle sewing machine, in the telescopic adjustment of carrying out connecting rod 3, also must carry out the telescopic adjustment of link rod 11, especially regulating under the occasion of link rod 11, the connecting bolt 11d that has to carry out those connection knife supporting stations 2 and link rod 11 unloads, and link rod 11 and knife is propped up miscellaneous operations such as connection status releasing of support 2.
The object of the present invention is to provide a kind of cutting facility of two-needle sewing machine, when it more carries out the position adjustment at the pin amplitude variation along with Sewing machines, need in the telescopic adjustment of carrying out connecting rod, also must not carry out the telescopic adjustment of link rod, operating efficiency is improved.
For the cutting facility of the two-needle sewing machine of the present invention that addresses the above problem, it has the 1st and the 2nd movable knife, connecting rod, knife drive unit and jockey; The the 1st and the 2nd above-mentioned movable knife is back and forth rotating in the revolution shuttle holder that is provided with respectively below two sewing needles, is catching and stay in sewing thread between sewing needle and the revolution shuttle and cut off; Above-mentioned connecting rod is that those are coupled together the knife supporting station that the above-mentioned the 1st and the 2nd movable knife can support rotationally, can carry out telescopic adjustment according to the location change of revolution shuttle; Above-mentioned knife drive unit is that the ground connection that links to each other with the lower shaft of Sewing machines when sewing finishing carries out once back and forth rotating; Above-mentioned jockey is that the knife supporting station and the above-mentioned knife drive unit of any one party in the 1st and the 2nd above-mentioned movable knife are coupled together; It is characterized in that above-mentioned jockey is made of revolving member, fixture and connecting rod; Above-mentioned revolving member is that the turning cylinder with the movable knife of any one party in the 1st and the 2nd above-mentioned movable knife is the center, can be provided with rotationally; Above-mentioned fixture is that revolving member is fixed on the side's that this revolving member is being set the movable knife supporting station with regulating the turned position; Above-mentioned connecting rod be respectively by fulcrum with the one end bearing on above-mentioned knife drive unit, the other end is bearing on the above-mentioned revolving member.
The cutting facility of two-needle sewing machine of the present invention, when the pin amplitude variation along with Sewing machines more carries out position adjustments, the fixture that fixedly knife supporting station and revolving member are used forms the liberation state and the connection status that makes the knife drive unit and be connected the connecting rod on the revolving member is removed, and the above-mentioned connecting rod that each knife supporting station is being connected is stretched.
And, after the interval adjustment of revolution shuttle holder and being fixed, carry out the adjusting operation of connecting rod, with fixture revolving member and knife supporting station are fixed again, the revolving member of connecting rod is connected, the trimming action that just can stipulate with the knife drive unit.
Fig. 1 is the front elevation of embodiment of the cutting facility of expression two-needle sewing machine of the present invention,
Fig. 2 be illustrated in the cutting facility of two-needle sewing machine shown in Figure 1, the front elevation of the jockey state when dwindling connecting rod,
Fig. 3 is in the cutting facility of expression two-needle sewing machine shown in Figure 1, the front elevation of the jockey state during the elongation connecting rod,
Fig. 4 is the front elevation of the two-needle sewing machine before the expression,
Fig. 5 is the front elevation that expression is arranged on the former cutting facility on the two-needle sewing machine.
Below, with reference to accompanying drawing embodiments of the invention are described.Identical symbol is all put at position same as the prior art, and the repetitive description thereof will be omitted.
Fig. 1 is the front elevation of the cutting facility of expression two-needle sewing machine of the present invention.
The D of figure is the jockey that connects knife drive unit 4 and knife supporting station 2, and this jockey D is by can be with the 2nd movable knife C
2Turning cylinder P be the revolving member 7 that is provided with rotationally of middle heart and can be fixed on fixture 20 on the knife supporting station 2 to this revolving member 7 that and the connecting rod 6 that connects the arm 9 of revolving member 7 and knife drive unit 4 constitutes.
And in this embodiment, above-mentioned fixture 20 is made of the hold-down screw 20 that is arranged on the knife supporting station 2.This hold-down screw 20 is inserted on the revolving member 7 in the circular-arc slotted hole 7a that forms, and when it is screwed into knife supporting station 2, just revolving member 7 is pressed on the knife supporting station 2, thereby can be fixed together the two.
Below, the effect of the cutting facility of the two-needle sewing machine with this jockey D is described.
When accepting the trimming signal, knife drive unit 4 makes arm 9 rotate towards counter-clockwise direction, and connecting rod 6 is moved towards the below among the figure, makes revolving member 7 thus and the knife supporting station 2 that is fixed together with it rotates toward the clockwise direction.
And, by connecting rod 3 knife supporting station 1 is rotated toward the clockwise direction, thereby make the 1st and the 2nd movable knife C that is fixed on these knife supporting stations 1,2 by the rotation of this knife supporting station 2
1, C
2To each revolution shuttle A
1, A
2Direction moves, and will not have expression in each the bar sewing line chart between each sewing needle and the revolution shuttle) catch.
Then, when knife drive unit 4 clockwise directions rotate and revert to the home position, make the 1st and the 2nd movable knife C
1, C
2Also revert to home position (position shown in the figure), return when mobile, can cut off the wire clamp residence of sewing by the fixedly knife that does not have expression among above-mentioned movable knife and the figure at this.
Below, the adjusting operation of more being carried out along with the pin amplitude variation in this Sewing machines is described.
With the pin amplitude variation of Sewing machines more accordingly, in order to change two revolution shuttle A
1, A
2Between distance and carry out above-mentioned revolution shuttle holder B
1, B
2Position adjustments the time, earlier the hold-down screw 20 of jockey D is unclamped the connection status of releasing revolving member 7 and knife supporting station 2.
That is, rotate the state that revolving member 7 and connecting rod 6 also do not move towards any direction even be in knife supporting station 2.
Then, under this state, according to revolution shuttle holder B
1, B
2Near and leave, carry out the flexible of connecting rod 3.
Then, after connecting rod 3 is regulated, revolving member 7 and knife supporting station 2 are fixed together, make 6 one-tenth connection status of knife supporting station 2 and connecting rod, in other words, make the cutting facility of two needle sewing machines become the state that can drive with hold-down screw 20.
After being connected operation and finishing of knife supporting station 2 and connecting rod 6, if connecting rod 3 is shortened, under the occasion that knife supporting station 2 leaves from knife drive unit 4 directions, as illustrated in fig. 2, revolving member 7 is to be fixed on the knife supporting station 2 under the state that rotates toward the clockwise direction of middle heart with turning cylinder P.
On the other hand, extending connecting rod 3, making under the occasion of knife supporting station 2 near knife drive unit 4, just as illustrated in fig. 3, revolving member 7 is that middle heart is fixed on the knife supporting station 2 under the state of counter-clockwise direction rotation with turning cylinder P.
Promptly, cutting facility with two-needle sewing machine of this jockey D can be replaced as tightening operation with maneuverable hold-down screw 20 to miscellaneous telescopic adjustment operation of former jockey (link rod 11), thereby can improve the adjusting efficiency of operation of the yarn cutting device of two-needle sewing machine.
The yarn cutting device of two-needle sewing machine of the present invention has and has the 1st and the 2nd movable knife reciprocal rotation, that the sewing thread between sewing needle and the revolution shuttle is caught and cut off on the revolution shuttle platform that is provided with respectively below two sewing needles; Each knife supporting station that can support the 1st and the 2nd movable knife is rotationally coupled together, can carry out accordingly with the location change of revolution shuttle the connecting rod of telescopic adjustment; The ground connection that links to each other when sewing finishing, with the lower shaft of Sewing machines is carried out once the back and forth knife drive unit of rotation; Any one supporting station and the jockey that couples together of knife drive unit in the 1st and the 2nd movable knife, because it is with being the revolving member that middle heart is provided with rotationally with the turning cylinder of any one the movable knife in the 1st and the 2nd movable knife; With respect to the movable knife supporting station beyond set on this revolving member, the fixing fixture of revolving member with regulating the turned position; Constitute above-mentioned jockey by fulcrum, connecting rod that an end is connected on the above-mentioned drive unit, the other end is connected on the above-mentioned revolving member respectively, thereby can be easily and promptly carry out operating efficiency being improved along with the change of the pin width of cloth will be carried out the adjusting operation of two-needle sewing machine and regulate post-job affirmation operation.
Claims (1)
1. the cutting facility of a two-needle sewing machine, it has the 1st and the 2nd movable knife, connecting rod, knife drive unit and jockey; The the 1st and the 2nd above-mentioned movable knife is back and forth rotating in the revolution shuttle holder that is provided with respectively below two sewing needles, catches to stay in sewing thread between sewing needle and the revolution shuttle and cut off; Above-mentioned connecting rod is that those are coupled together the knife supporting station that the above-mentioned the 1st and the 2nd movable knife can support rotationally, can carry out telescopic adjustment according to the location change of revolution shuttle; Above-mentioned knife drive unit is that the ground connection that links to each other with the lower shaft of Sewing machines when sewing finishing carries out once back and forth rotating; Above-mentioned jockey is that the knife supporting station and the above-mentioned knife drive unit of any one party in the 1st and the 2nd above-mentioned movable knife are coupled together; It is characterized in that above-mentioned jockey is made of revolving member, fixture and connecting rod; Above-mentioned revolving member is that the turning cylinder with the movable knife of any one party in the 1st and the 2nd above-mentioned movable knife is the center, can be provided with rotationally; Above-mentioned fixture is that revolving member is fixed on the side's that this revolving member is being set the movable knife supporting station with regulating the turned position; Above-mentioned connecting rod be respectively by fulcrum, with the one end bearing on above-mentioned knife drive unit, the other end is bearing on the above-mentioned revolving member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95104049A CN1054412C (en) | 1995-03-28 | 1995-03-28 | Thread cutting device of two-needle sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95104049A CN1054412C (en) | 1995-03-28 | 1995-03-28 | Thread cutting device of two-needle sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1132278A CN1132278A (en) | 1996-10-02 |
| CN1054412C true CN1054412C (en) | 2000-07-12 |
Family
ID=5074970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95104049A Expired - Fee Related CN1054412C (en) | 1995-03-28 | 1995-03-28 | Thread cutting device of two-needle sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1054412C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109606858A (en) * | 2018-11-27 | 2019-04-12 | 苏子程 | A kind of robot palletizer is with applying sealing line automatic-shearing device |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11333175A (en) * | 1998-05-28 | 1999-12-07 | Tokai Ind Sewing Mach Co Ltd | Thread cutting device of sewing machine |
| JP4782526B2 (en) * | 2005-09-30 | 2011-09-28 | Ｊｕｋｉ株式会社 | sewing machine |
| JP4734076B2 (en) * | 2005-10-04 | 2011-07-27 | クインライト電子精工株式会社 | Needle width adjustment mechanism in binding machine |
| JP2011212151A (en) * | 2010-03-31 | 2011-10-27 | Brother Industries Ltd | Sewing machine |
| DE102016222427A1 (en) * | 2016-11-15 | 2018-05-17 | Dürkopp Adler AG | Yarn knife assembly for a two-needle sewing machine, two-needle sewing machine with such a thread knife assembly and piping pocket sewing machine with such a two-needle sewing machine |
| IT201700049595A1 (en) * | 2017-05-08 | 2018-11-08 | Tor Mec Ambrosi S R L | INDEPENDENT DOUBLE NEEDLE INDUSTRIAL SEWING MACHINE EQUIPPED WITH THREAD BEAM CONTROL SYSTEM |
| CN106988040A (en) * | 2017-06-05 | 2017-07-28 | 标准缝纫机菀坪机械有限公司 | A kind of integrative feeding sewing machine thread cutting mechanism |
| CN109652931B (en) * | 2019-02-28 | 2020-09-04 | 杰克缝纫机股份有限公司 | Sewing machine and thread trimming mechanism thereof |
| CN109837661B (en) * | 2019-02-28 | 2021-04-27 | 杰克缝纫机股份有限公司 | Sewing machine and thread trimming mechanism thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582663A (en) * | 1969-11-21 | 1971-06-01 | I C Herman & Co Inc | Chain thread severer with light source and photocell having relative reciprocal movement |
| DE3706078A1 (en) * | 1986-09-30 | 1988-04-07 | Rockwell Rimoldi Spa | Device for cutting off the threads on overcast sewing machines with two or more needles |
| US5154130A (en) * | 1991-09-30 | 1992-10-13 | Leggett & Platt, Incorporated | Multi-needle double lock chain stitch tack, jump and thread trimming quilting method and apparatus |
-
1995
- 1995-03-28 CN CN95104049A patent/CN1054412C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582663A (en) * | 1969-11-21 | 1971-06-01 | I C Herman & Co Inc | Chain thread severer with light source and photocell having relative reciprocal movement |
| DE3706078A1 (en) * | 1986-09-30 | 1988-04-07 | Rockwell Rimoldi Spa | Device for cutting off the threads on overcast sewing machines with two or more needles |
| US5154130A (en) * | 1991-09-30 | 1992-10-13 | Leggett & Platt, Incorporated | Multi-needle double lock chain stitch tack, jump and thread trimming quilting method and apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109606858A (en) * | 2018-11-27 | 2019-04-12 | 苏子程 | A kind of robot palletizer is with applying sealing line automatic-shearing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1132278A (en) | 1996-10-02 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20000712 Termination date: 20110328 |