CN1218858A - Thread cutter of sewing machine by chain type stitch - Google Patents
Thread cutter of sewing machine by chain type stitch Download PDFInfo
- Publication number
- CN1218858A CN1218858A CN 97119819 CN97119819A CN1218858A CN 1218858 A CN1218858 A CN 1218858A CN 97119819 CN97119819 CN 97119819 CN 97119819 A CN97119819 A CN 97119819A CN 1218858 A CN1218858 A CN 1218858A
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- guide plate
- lower installation
- installation board
- hole
- sliding guide
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Abstract
The thread cutter has an arc guide hole at the center of the lower installation board, a set of vertical holes at the front, a guiding board connected to the end, several sets of vertical screw holes and one positioning hole with bolt and sleeve washer inside it; an elastic element between the lower installation board and the fixing board; a sliding guide plate with one side contacting closely one side of guiding board of the lower installation board, a convex pillar fixed at one end of linking swing arm and a limiting sleeve on the pillar. It has failure rate of thread-hooking and cutting, and simple regulation of positioning the cutter.
Description
The present invention relates to the thread cutting device in a kind of Sewing machines.
At present, existing chain stitch Sewing machines is widely used, be typically provided with a thread cutting device on the sewing machine platform of this chain stitch, so that at the end collude line and tangent line operation automatically in the sewing action, as shown in figure 17, a kind of thread cutting device mainly comprises tangent line clamp mechanism 10, linking swing arm 20, sliding guide plate 30 and installing plate 40 etc., wherein this tangent line clamp mechanism 10 is by moving cutting tool 101, fixed cutting tool 102, upper clip 103 is formed with lower clamping piece 104, and fixed cutting tool 102, after making up with lower clamping piece 104, upper clip 103 is rotated with front end at installing plate 40, moving cutting tool 101 is passed in the tangent line clamp mechanism 10 again, and be rotated with front end at sliding guide plate 30, and the middle appropriate location of linking swing arm 20 be provided with a fulcrum 201 be installed in Sewing machines the bed platform on, simultaneously, the front end of linking swing arm 20 has an elongated hole 202, supply with sliding bolt 301 sockets with sliding guide plate 30, and sliding guide plate 30 is that winding is in the limit sliding chutes 401 of installing plate 40, the other end of linking swing arm 20 then is connected with drive gear of sewing machine, so as to driving linking swing arm 20 swings, make sliding guide plate 30 be able to a left side, the right side reciprocatingly slides; And four corners of installing plate 40 are provided with hole 402, for whole thread cutting device is rotated with on Sewing machines.
As shown in figure 18, when Sewing machines moves, knit line 50 promptly along with suture needle is done, following reciprocating action, to thrust by the surface of sewing thing, and knit line 50 and when suture needle moves up, form coil 501, at the same time, hook circle device 60 is together with the looper thread of wearing on it 601, together do the swing of predetermined angular and intert in the coil 501, relend and to be knitted line 50 by the traction feeding of sewing thing and pull out equivalent length with coil 501 and the looper thread 601 that passes coil 501, and cooperatively interact following in suture needle and hook circle device 60, make the coil 501 of knitting line 50 and the looper thread 601 mutual interlocks that pass coil 501, and formed seam, to finish the action of sewing by the dorsal part of sewing thing.
And when the sewing end of job is desired to carry out the tangent line operation, the moving cutting tool 101 of tangent line clamp mechanism 10 is promptly borrowed the action of linking swing arm 20 and is stretched out forward, and the preceding hook part 105 that moving cutting tool 101 front ends are connected with is backed down and is knitted line 50, as shown in figure 19, continue it, moving cutting tool 101 continues to stretch out forward, and pass and knit formed coils 501 of line 50 and the looper thread of wearing on the hook circle device 60 601, the point place stops until arriving upward, as shown in figure 20, continue it, 101 of moving cutting tools begin withdrawal, and in movable blade 101 withdrawals, the preceding hook part 105 and 106 of the back hook parts of moving cutting tool 101 colludes toward looper thread 601 respectively and knits line 50 and past pulling back, as shown in figure 21, and when moving cutting tool 101 is retracted to bottom dead centre, collude line 50 cutting knife 102 that promptly is fixed of knitting that draws and cut off, looper thread 601 is then on quilt after the cut-out, lower clamping piece 103,104 support, as shown in figure 22, whereby, promptly finish the action of tangent line and clamp, and prepare sewing operation next time.
But in actual use, the thread cutting device of commonly using still installs and still has many shortcomings:
1, because hook circle device can cooperate the upper and lower sewing action of suture needle, and do the quick swing of certain angle, if upper and lower 3000 times of per minute suture needle, then also swing 3000 times, swing needed space in order to cooperate hook circle device, thread cutting device must be installed in the distance of fortune of off-hook circle device, swing with the hook circle device of dodging, the damage of avoiding patting thread cutting device and causing mechanism's part, but therefore also make the distance of advising cutting knife alivelys and being stretched out need extend, can successfully prolong to go and collude line and tangent line operation; For moving cutting tool, the distance of stretching out adds promptly easily colludes situation needs that line or tangent line slip up threading again, and causes the sizable puzzlement of operating personnel.
2, the position off-hook circle device of installing because of thread cutting device is far away with the position of suture needle, so will knit that line is pulled back and when cutting off, can make the end of a thread that stays long, and make the reduction of finished product aesthetic property when moving cutting tool.
3, thread cutting device is borrowed the hole in installing plate four corners, for whole thread cutting device is rotated with on Sewing machines, so when thread cutting device after a period of time uses, and need to adjust the position and the angle of thread cutting device, when keeping tangent line process smooth and easy, need the bolt removal that four corners are rotated with, after carefully adjusting desired position and angle again, bolt is screwed again and set firmly, adjustment process is very difficult, causes the inconvenience of operating process.
In view of this, the Sewing machines thread cutting device that the purpose of this invention is to provide a kind of chain stitch, can make thread cutting device near hook circle device, the moving cutting tool outreach shortens, be convenient to collude exactly the action of line and tangent line, utilize the position location that angle fine setting moving cutting tool stretches of putting of adjusting the cover packing ring again.
The object of the present invention is achieved like this: a kind of Sewing machines thread cutting device of chain stitch comprises fixed head, lower installation board, sliding guide plate and linking swing arm, wherein fixed head one end is provided with screw, the lower installation board front end is provided with fixed cutting tool and intermediate plate group, the sliding guide plate group is located at the lower installation board top, and its front end is installed with moving cutting tool, hook portion and back hook portion before this moving cutting tool front end is provided with again, linking swing arm central authorities have a perforation, and cooperate the sleeve packing ring to be installed on the fixed head with bolt, it is characterized in that: the lower installation board centre is provided with an arc guiding hole, its front end is provided with one group of upright hole, and its tail end connects a guide plate, its tail end also is provided with an array vertical screw hole and a locating hole simultaneously, interior sheathed bolt of this locating hole and the sleeve packing ring that matches thereof, and be provided with a flexible member between lower installation board and the fixed head; The sliding guide plate surface is provided with a microscler chute and an elongated hole, several space washers are set in this microscler chute and are rotated with in the group vertical screw hole of lower installation board, and a side of this sliding guide plate abuts on guide plate one side of lower installation board again; Linking swing arm one end set firmly projection and sheathed spacing collar and with the elongated hole socket of the arc guiding hole and the sliding guide plate of lower installation board.
Above-mentioned guide plate borrows bolt to be connected in the vertical screw hole of lower installation board.
Above-mentioned sleeve packing ring below is provided with the locating flange that is eccentric shape.
Above-mentioned sleeve washer face is provided with the scale salient point.
Above-mentioned projection cooperates spacing collar and is located in the elongated hole of sliding guide plate and compresses moving cutting tool.Owing to adopt such scheme: reduce the error probability of colluding line and tangent line, the adjustment of moving cutting tool location is simple.
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an exemplary embodiments three-dimensional exploded view of the present invention;
Fig. 2 is assembled in state diagram on the Sewing machines for exemplary embodiments of the present invention;
Fig. 3 is an exemplary embodiments vertical view of the present invention;
Fig. 4 is an exemplary embodiments front view of the present invention;
Fig. 5 is the guiding shell fragment assembling generalized section of exemplary embodiments lower installation board of the present invention;
Fig. 6 is exemplary embodiments linking swing arm of the present invention and lower installation board and sliding guide plate combination generalized section;
Fig. 7 is the projection and the sliding guide plate combination partial cutaway schematic of exemplary embodiments linking swing arm of the present invention;
Fig. 8 is the position and the Sewing machines hook circle device movement state diagram of exemplary embodiments of the present invention;
Fig. 9 cooperates first kind of movement state diagram of tangent line operation for exemplary embodiments of the present invention;
Figure 10 is first kind of movement state diagram of exemplary embodiments of the present invention;
Figure 11 is second kind of movement state diagram of exemplary embodiments of the present invention;
Figure 12 cooperates second kind of movement state diagram of tangent line operation for exemplary embodiments of the present invention;
Figure 13 cooperates the third movement state diagram of tangent line operation for exemplary embodiments of the present invention;
Figure 14 cooperates the 4th kind of movement state diagram of tangent line operation for exemplary embodiments of the present invention;
Figure 15 is the sleeve packing ring vertical view on the present invention typical case enforcement linking swing arm;
Figure 16 is the sleeve packing ring side view on the present invention typical case enforcement linking swing arm;
The thread cutting device stereoscopic figure that Figure 17 commonly uses;
Thread cutting device position that Figure 18 commonly uses and hook circle device movement state diagram;
First kind of movement state diagram of the thread cutting device that Figure 19 commonly uses;
Second kind of movement state diagram of the thread cutting device that Figure 20 commonly uses;
The third movement state diagram of the thread cutting device that Figure 21 commonly uses;
The 4th kind of movement state diagram of the thread cutting device that Figure 22 commonly uses;
As shown in Figure 1, 2, present embodiment system is made up of fixed head 1, lower installation board 2, sliding guide plate 3 and linking swing arm 4, and is assembled in the Sewing machines that is combined into complete chain stitch in Sewing machines 5 and the pneumatic cylinder 51.
Fixed head 1 is rotated with on the bed platform of Sewing machines 5 by bolt 11, and is provided with a screw 12 at the other end of fixed head 1, and simultaneously, appropriate location is convexly equipped with a lamellar body 13 on fixed head 1, and the stiff end 141 of supplying with a flexible member 14 colludes to be established.
Linking swing arm 4 centre have a perforation 41, and use bolt 411 engage sleeves packing rings 42 and form fulcrums and be installed on the fixed head 1, the locating flange 421 of these sleeve packing ring 42 belows is the eccentric shape that is suitable, and has a scale salient point 422 on its surface, and the end of linking swing arm 4 sets firmly the projection 43 of two step shapes, 44, supply with spacing collar 431 respectively, in the elongated hole 32 of the 441 sheathed and arc guiding holes 21 that pass lower installation board 2 and sliding guide plate 3, and projection 43 sheathed spacing collars 431 and when passing the arc guiding hole 21 of lower installation board 2, can on projection 43, locate by a C type clasp 432 buckles, as shown in Figure 6, and projection 44 cooperates spacing collars 441 and when passing the elongated hole 32 of sliding guide plate 3, just can suitably be compressed the location by the moving cutting tool on the sliding guide plate 3 34, as shown in Figure 7, simultaneously, the other end at linking swing arm 4 has one group of upright hole 45, the upright hole 45 of this group can be supplied with bolt 451 and pass, and screw with the pneumatic cylinder 251 of Sewing machines 5 and the movement arm 511 usefulness nuts 452 that are connected thereof and reach pivot joint
When Sewing machines 5 sewing operations, wear promptly to cooperate and wear the upper and lower of suture needle of knitting line 50 and move back and forth around the hook circle device 60 of looper thread 601, the swing of one predetermined angular and carry out sewing action, at this moment, thread cutting device system is positioned at the bed platform outside of sewing plate 5, with the space of hook circle device 60 swings of dodging, as shown in Figure 8.
After the sewing end of job, when desiring to carry out the tangent line operation, thread cutting device is promptly by the push-and-pull of pneumatic cylinder 51, and linking swing arm 4 is moved simultaneously, because the projection 43 of linking swing arm 4 front ends, 44 and spacing collar 431, slide in the elongated hole 32 of 441 arc guiding holes 21 that tie up to lower installation board 2 and sliding guide plate 3, and be located at the traction of the flexible member 14 of 2 of fixed head 1 and lower installation boards because of group, make the projection 43 on the linking swing arm 4 abut in slip in the arc guiding hole 21, as shown in Figure 9, the moving cutting tool 34 that linking swing arm 4 is set firmly lower installation board 2 and sliding guide plate 3 and front end thereof when swing simultaneously inwardly and is forward released exactly; In addition, because the guiding of the U-lag 291 of the guiding shell fragment 29 of lower installation board 2 belows and spacing, lower installation board 2 can not floated in course of action together with sliding guide plate 3, and can precision maneuver, as Figure 10, shown in 11, continue it, moving cutting tool 34 advances to linking swing arm 4 actuating lengths and ends, at this moment, the back hook part 342 of moving cutting tool 34 promptly catches on the coil 501 of knitting 50 telogenesis of line, as shown in figure 12, and when linking swing arm 4 and during backhaul by the push-and-pull of pneumatic cylinder 51, thread cutting device and moving cutting tool 34 are through connecting the projection 43 of transporting swing arm 4 front ends, 44 and spacing collar 431,441 drive and outwards and withdrawal backward, simultaneously, the preceding hook part 341 and 342 of the back hook parts of moving cutting tool 34 colludes clove hitch line 601 respectively and knits line 50 formed coils 501 and pull back, as shown in figure 13, the stroke of thread cutting device being pulled back when linking swing arm 4 at the end, advise cutting knife 34 is in the retraction fixed cutting tool 25 alively, and related line 50 and the looper thread 601 of will knitting cuts off, and looper thread 601 is promptly by intermediate plate group 27 clampings, simultaneously, thread cutting device is also swung and is returned to initial position by Sewing machines 5 outsides, and finishes the tangent line operation, to prepare sewing operation next time, as shown in figure 14.
After after a while, as find that the length that thread cutting device moving cutting tool 34 extend out to when locating has error, and the action that causes colluding line and tangent line has some setbacks, even when often error taking place, can borrow the bolt 411 that unscrews linking swing arm 4 perforations 41, and with the sleeve packing ring 42 of big cover rotate a suitable angle by actual needs, the locating flange 421 of borrowing sleeve packing ring 42 belows to be eccentric shape comes the perforation 41 formed fulcrums of pushing tow linking swing arm 4, and the foundation of borrowing scale salient point 422 conducts on the sleeve packing ring 42 to adjust, make the Initial fix of linking swing arm 4 be able to fine adjustment, as Figure 15, shown in 16, and then the position when changing moving cutting tool 34 and stretching out the location, make the action of colluding line and tangent line accurate.
The present invention has following many advantages:
1, thread cutter is positioned at outside the bed platform of sewing machine at ordinary times, just can avoid the space of hook circle device swing, thereby can be with tangent line Device is installed in the nearer distance of off-hook circle device, and the distance that moving cutting tool is stretched out is shorter, colludes sending out of line and tangent line error and reduce Give birth to.
Position off-hook circle device and the suture needle position of 2, installing because of thread cutter are nearer, will knit the line return and cut off so work as moving cutting tool The time, left the end of a thread is shorter, makes the convenient and finished product aesthetic property raising of post-treatment procedures.
3, can temporarily transfer the angles of the locating flange sleeve packing ring that has eccentric shape on the whole linking swing arm, and simple and easy fine setting activity Cutting knife stretches out anchor point, makes adjustment process simply easy, and increases the fluency of work flow.
Claims (5)
1, a kind of Sewing machines thread cutting device of chain stitch comprises fixed head (1), lower installation board (2), sliding guide plate (3) and linking swing arm (4), wherein fixed head (1) one end is provided with screw (12), lower installation board (2) front end is provided with fixed cutting tool (26) and intermediate plate group (27), sliding guide plate (3) group is located at lower installation board (2) top, and its front end is installed with moving cutting tool (34), this moving cutting tool (34) front end is provided with preceding hook portion (341) and back hook portion (342) again, linking swing arm (4) central authorities have a perforation (41), and cooperate sleeve packing ring (42) to be installed on the fixed head (1) with bolt (411), it is characterized in that: lower installation board (2) centre is provided with an arc guiding hole (21), its front end is provided with one group of upright hole (28), and its tail end connects a guide plate (25), its tail end also is provided with an array vertical screw hole (22) and a locating hole (23) simultaneously, interior sheathed bolt (231) of this locating hole (23) and the sleeve packing ring (24) that matches thereof, and be provided with a flexible member (14) between lower installation board (2) and the fixed head (1); Sliding guide plate (3) surface is provided with a microscler chute (31) and elongated hole (32), several space washers (33) are set in this microscler chute (31) and are rotated with in the group vertical screw hole (22) of lower installation board (2), a side of this sliding guide plate (3) abuts on guide plate (25) one sides of lower installation board (2) again; Linking swing arm (4) one ends set firmly projection (43), (44) and sheathed spacing collar (431), (441) and with elongated hole (32) socket of arc guiding hole (21) Yu the sliding guide plate (3) of lower installation board (2).
2, by the Sewing machines thread cutting device of the described chain stitch of claim 1, it is characterized in that: above-mentioned guide plate (25) borrows bolt (252), (253) to be connected in the vertical screw hole (22) of lower installation board (2).
3, by the Sewing machines thread cutting device of the described chain stitch of claim 1, it is characterized in that: above-mentioned sleeve packing ring (42) below is provided with the locating flange (421) that is eccentric shape.
4, by the Sewing machines thread cutting device of the described chain stitch of claim 1, it is characterized in that: above-mentioned sleeve packing ring (42) surface is provided with scale salient point (422).
5, by the Sewing machines thread cutting device of the described chain stitch of claim 1, it is characterized in that: above-mentioned projection (43), (44) cooperate spacing collar (431), (441) and are located in the elongated hole (32) of sliding guide plate (3) and compress moving cutting tool (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97119819A CN1088772C (en) | 1997-11-27 | 1997-11-27 | Thread cutter of sewing machine by chain type stitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97119819A CN1088772C (en) | 1997-11-27 | 1997-11-27 | Thread cutter of sewing machine by chain type stitch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1218858A true CN1218858A (en) | 1999-06-09 |
| CN1088772C CN1088772C (en) | 2002-08-07 |
Family
ID=5175589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97119819A Expired - Fee Related CN1088772C (en) | 1997-11-27 | 1997-11-27 | Thread cutter of sewing machine by chain type stitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1088772C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469493B (en) * | 2007-12-28 | 2012-10-17 | 顾飞龙 | Lower thread cutter of sewing machine |
| CN104099730A (en) * | 2013-04-04 | 2014-10-15 | 株式会社森本制作所 | Line cutting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036214C (en) * | 1994-04-08 | 1997-10-22 | 高林股份有限公司 | Device for severing lower thread of multi-needle sewing machine |
| CN2234963Y (en) * | 1995-04-08 | 1996-09-11 | 顾飞龙 | Thread-cutter for chain-shaped sewing method sewing machine |
-
1997
- 1997-11-27 CN CN97119819A patent/CN1088772C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469493B (en) * | 2007-12-28 | 2012-10-17 | 顾飞龙 | Lower thread cutter of sewing machine |
| CN104099730A (en) * | 2013-04-04 | 2014-10-15 | 株式会社森本制作所 | Line cutting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1088772C (en) | 2002-08-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020807 Termination date: 20111127 |