CN1036478C - Looper for sewing machine - Google Patents
Looper for sewing machineInfo
- Publication number
- CN1036478C CN1036478C CN 92101784 CN92101784A CN1036478C CN 1036478 C CN1036478 C CN 1036478C CN 92101784 CN92101784 CN 92101784 CN 92101784 A CN92101784 A CN 92101784A CN 1036478 C CN1036478 C CN 1036478C
- Authority
- CN
- China
- Prior art keywords
- looper device
- suture
- looper
- eedle
- hollow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The present invention relates to a looper for a sewing machine, which comprises a needle, a lower looper and an upper looper, wherein the needle moves vertically to thread through a needle plate and slopes towards a cloth feeding direction; the lower looper which moves back and forth in an arc is crossed with the stitch of the needle below the needle plate; the upper looper which also moves back and forth in an arc is crossed with the stitch of the lower looper on the side surface of the needle plate, and the upper looper is crossed with the stitch of the needle above the needle. A sewing thread of the needle threads through the needle, a sewing thread of the lower looper threads through the lower looper, a sewing thread of the upper looper threads through the upper looper, and the three threads are crossed mutually for the overseam of cloth.
Description
The present invention relates to looper for sewing machine, particularly overlock machine and double-chain stitch seam machine looper device.
Figure 4 shows that the overlock machine that a Daepori is logical.As shown in Figure 4, overlock machine comprises eedle 1, eedle 1 passes needle plate 4 and tilts with the cloth feeding direction, and be fixed on main shaft and do synchronously, on the shank of following motion, overlock machine also comprises, following looper device, following looper device 3 ' the carry out reciprocating motion of arc, stitching with eedle 1 below needle plate 4 intersects, the oval arc reciprocating motion of last looper device 2 ' carry out and place, needle plate 4 sides time looper device 3 ' stitching intersect, and to intersect this overlock machine with eedle stitching above the eedle 1 be a pin three-wire type overlock machine, an its eedle suture passes eedle 1, following looper device suture 3a pass down looper device 3 ' and one go up looper device suture 2a pass looper device 2 ', three lines cross one another and realize that cloth sews.
In above-mentioned overlock machine, eedle 1 and last looper device 2 ' be on needle plate 4, to intersect, thereby suture 2a draws to eedle 1, last looper device 2 ' and following looper device 3 ' intersect in the cloth marginal portion, suture 3a draw supreme looper 2 ', eedle 1 and following looper device 3 ' needle plate 4 below, intersect, so looper device 3 under the traction extremely of eedle line (not shown) ', carry out overseam at the edge of cloth 5 then, so just prevented that suture is in the wearing and tearing of the marginal portion of cloth 5.
As shown in Figure 5, line hole 2b supplies suture 2a to draw usefulness as the suture fairlead, and this hole 2a is located at looper device 2 ' upward approaching awl end 2A position, and the suture 2a that is guided by last looper device suture lead ring 21 passes this line hole 2b.
To shown in Figure 5 similar, line hole 3b draws usefulness as the suture fairlead for suture 3b, this line hole 3b is located at looper device 3 ' upward approaching awl end 3A position, in order to prevent that suture 3a from disturbing sewing operation in the middle of its track, support that at suture part 3B has cut wire casing 3c and looper device rear portion 3C is provided with suture guide hole 3d.By the suture 3a traction of down looper device suture guide hole 32 guiding to looper device suture guide hole 31 down, pass down then looper device 3 ' awl end 3A on line hole 3b.Suture 3a on looper device rear portion 3C between suture guide hole 3d and the line hole 3b is limited to regulate and be supported in the suture groove 3c.
Usually need take the photograph son with one and carry out small number of operations, just can make suture pass looper device line hole 2b and following looper device line hole 3b, traction sutures is to the suture guide hole 3d of looper device rear portion 3C and make down looper device suture 3a adjusting enter suture groove 3c etc.In addition, suture passes the pattern of looper device part and should finish by shown in Figure 5, if the lead-in wire order is incorrect (for example when carrying out sewing operation, for this kind overlock machine, the lead-in wire operation must correctly be carried out in the following order: ((1) is looper device suture down, (2) go up looper device suture and (3) eedle suture), then can give rise to trouble, suture is beaten strand and eedle is fractureed when sewing operation begins.
In addition, owing to be located at suture groove 3c on the support part 3B of suture 3a in its anterior perforate, so under suture 3a tends to when regulating in suture groove 3c hang from suture groove 3c pine, and this loose extension of suture can cause winding or other trouble with other suture.And, because looper device 2 ' and 3 ' needle plate 4 following narrow positions be installed in, point or take the photograph son and be difficult to reach these positions, therefore require to have skilled operating technology just can make suture pass down looper device suture guide hole 3d and following looper device 3 ' line hole 3b, the latter is installed in more inner position.So, can not correctly the go between situation of work of unskilled person often takes place, downtime is also longer, because the required time of lead-in wire work own is longer, and when resetting sewing operation and going between again, winding can cause breaking once more.
In order to overcome above-mentioned shortcoming, there is following dual mode can supply to select for use.A kind of method is to adopt thread guide devices or down-lead device (putting down-the 1-303194 announcement as Japanese Patent Application Laid-Open).Another kind method is at looper device running part a clutch to be installed, and the looper device is put down when clutch is changed, yet can improve the lead-in wire operating condition like this, and thread guide devices and down-lead device cost an arm and a leg, and job insecurity needs know-how to use.For the operator, the operation of understanding thread guide devices is also very difficult in addition, and Sewing machines is because workman's misoperation is easy to damage like this.
The objective of the invention is provides a kind of looper device for Sewing machines; wherein; suture very easily passes the looper device that is installed in narrow positions below the needle plate, even also can not get into trouble when resetting sewing operation when the operator is a green hand, thereby has shortened downtime.
To achieve these goals, the invention provides a kind of looper device for use in sewing machine, comprise eedle, it is done in fact, following motion is passed needle plate but is tilted with the cloth feeding direction and be fixed on and main shaft synchronously and on doing, on the shank of following motion, also comprise, following looper device, the reciprocating motion that following looper device carries out arc intersects with the stitching of eedle below needle plate, last looper device carries out oval arc reciprocating motion and descends the stitching of looper device to intersect with place, needle plate side, and intersect with eedle stitching above the eedle, an eedle suture passes eedle, and following looper device suture passes down looper device and one and goes up looper device suture and pass the looper device.Three lines cross one another to carry out the overseam of cloth.Comprise at least one last looper device and following looper device, make looper device suture introduce the hole from the suture of looper device and correctly pass to the suture fairlead of splaying by hollow-core construction with hollow-core construction.
This hollow-core construction can be made of hollow object, perhaps be combined into by pipe fitting by pipe fitting and groove to make looper device suture can correctly pass to the suture fairlead of splaying from the introducing hole of looper device, and pipe fitting and groove is fitted.In addition, hollow-core construction also can be made into to be combined into by groove by groove and cover plate and makes looper device suture can correctly pass to the suture fairlead of splaying from the introducing hole of looper device, and cover plate covers groove.
The suture of looper device is introduced the hole and be can be made into infundibulate.
Describe the present invention in detail below by drawings and Examples, in the accompanying drawing:
Fig. 1 shows the looper device part of the overlock machine with looper device of the present invention;
Fig. 2 (a) shows down the hollow-core construction of looper device, and Fig. 2 (b) shows the hollow-core construction of looper device, and Fig. 2 (c) is the key diagram of suture leads operation.
Fig. 3 (a), 3 (b) and 3 (c) show down the another kind of hollow-core construction of looper device, and Fig. 3 (d) and 3 (e) show the funnel-shaped structure that looper device suture is introduced the hole.
Fig. 4 is the perspective view of overlock machine.
Fig. 5 is the enlarged drawing of overlock machine looper device part shown in Figure 4.
Below in conjunction with accompanying drawing some embodiments of the present invention are described.
Fig. 1 shows the looper device part of the overlock machine that looper device of the present invention is housed.
As shown in Figure 1, have hollow-core construction by the following looper device 3 of Sewing machines of the present invention, be suitable for down that looper device suture 3a passes through, this hollow-core construction is in suture and introduces hole 3D between the suture fairlead 3A that splays.Similarly.The last looper device 2 of Sewing machines also has hollow-core construction, is suitable for looper device suture 2a and passes through, and this hollow-core construction is in suture and introduces hole 2D between the suture fairlead 2A that splays.
Fig. 2 (a) and 2 (b) are depicted as an embodiment of the hollow-core construction of upper and lower looper device 2 and 3.The hollow-core construction of last looper device 2 is made by blank pipe spare, introduces hole 2D by its looper device suture (not shown) by suture and correctly passes to the suture fairlead 2A that splays, shown in Fig. 2 (b).Similarly, the hollow-core construction of following looper device 3 also is made up of blank pipe spare, introduces hole 3D by its looper device suture (not shown) from suture and correctly passes to the suture fairlead 3A that splays, shown in Fig. 2 (a).
Fig. 3 (a) and 3 (b) are depicted as down another example of beating the device 3o of institute hollow-core construction.Shown in Fig. 3 (a) and 3 (b), the hollow-core construction of following looper device 3o is made up of tubule 3f and groove 3e, introduce hole 3D ' by looper device suture 3a under the tubule 3f by suture and correctly pass to suture fairlead 3A ', and tubule 3f and groove 3e applying (shown in Fig. 3 (a)).
Fig. 3 (c) is depicted as down another example of looper device 31 hollow-core constructions.The hollow-core construction of following looper device 31 is to be made of groove 3e and cover plate 3g, correctly pass to the suture outlet of splaying by groove 3e looper device suture from the suture intake, and cover plate 3g covers groove 3e.
In each hollow-core construction in above-mentioned first to the 3rd embodiment, upper and lower looper device 2 and each suture of 3 are introduced hole and all made infundibulate, and be promptly tubaeform, to be suitable for looper device suture by (as Fig. 2 (a), 2 (b) are shown in Fig. 3 (d) and 3 (e)).
As shown in Figure 1, the looper device of overlock machine comprises eedle 1, on it is done, following motion is passed needle plate 4 and is tilted with the cloth feeding direction, and be fixed on the synchronous work of main shaft on, on the pin mark 7 of following motion (as shown in Figure 4), also comprise looper device 3 down, the reciprocating motion that it carries out arc intersects with the stitching of eedle 1 below needle plate 4, last looper device 2 carries out oval arc reciprocating motion and descends the stitching of looper device 3 to intersect with place, needle plate 4 sides, and intersect with eedle stitching above the eedle 1, an eedle suture passes eedle 1, following looper device suture 3a passes down looper device 3 and one and goes up looper device suture 2a and pass 2, three sutures of looper device and cross one another and carry out the overseam of cloth.
Now the operative scenario according to the looper device of the present invention's structure is described as follows.
Making with blank pipe spare under the situation of looper device, as shown in Figure 1, following looper device suture 3a is guided shown in the collar 9a (as Fig. 2 cc) that passes down-lead device 9 by following looper device suture guide hole 32, down-lead device 9 is by the suture introducing hole 3D insertion of looper device 3 down, at this moment will descend looper device suture 3a to be through in its collar 9a, with cut the down-lead device 9 that oblique suture fairlead 3A stretch out of an end, transfer to then, so just once having finished the lead-in wire operation by the suture fairlead 3A that splays from following looper device 3.
Under the situation of the looper device of forming with groove 3e and tubule 3f, following looper device suture 3a passes down-lead device 9 by following looper device suture guide hole 32 guiding, and down-lead device 9 has inserted the suture that passes tubule 3f and has introduced hole 3D ', and the down-lead device 9 that an end is stretched out from the suture fairlead 3A ' of tubule 3f is by suture fairlead 3A ' dial-out then.
Under the situation of the looper device of forming by groove 3e and cover plate 3g, cover plate 3g is fixed on the groove 3e, following looper device suture 3a passes down-lead device 9 by 32 guiding of following looper device suture hole, and down-lead device 9c is transferred to from the down-lead device 9 that groove 3e suture outlet stretches out an end then by the suture intake of groove 3e by the suture outlet.
Above-mentioned operation is suitable for looper device 3 down, and same operation also can be used for the looper device.
Looper device of the present invention not only can be used for overlock machine effectively, also can be used for the Sewing machines of double-chain stitch.
Can obviously find out by embodiment described above, according to the present invention should have at least one the band hollow-core construction on, following looper device, by this hollow-core construction, looper device suture is introduced the suture fairlead that the hole correctly passes to the looper device from the suture of looper device, thereby be enough to only form the suture hole of each looper device a position, so just prevented wrong lead-in wire operation in addition, suture can not hung by pine in the middle of its track, thereby prevented to tangle by the suture of looper device and other suture, so even a green hand also can be correctly and the operation that goes between easily, moreover, use the looper device of the present invention operation that goes between to be easy to the person of being operated and to understand, operation does not need know-how to lead-in wire, damages so prevented the Sewing machines that causes owing to operating mistake fully.
In addition, lead-in wire order also is the operation that all can go between of the unnecessary any state in each operation process of Sewing machines, in the sewing operation because suture is beaten strand need go between again the time, do not need know-how to carry out, also needn't interior in short-term other suture be taken away, prevent that simultaneously suture from beating strand once more, thereby can prevent that the suture that has passed through tangles.Simultaneously, just do not need special thread guide devices, so just can supply Sewing machines at a low price and use down-lead device at a low price according to the present invention.
Claims (5)
1. a looper for sewing machine comprises an eedle, and it is done upper and lower motion and passes needle plate and tilt with the cloth feeding direction, and is fixed on main shaft and does synchronously on the shank of upper and lower motion; A following looper device, it carries out the reciprocating motion of arc, and the stitching with eedle below needle plate intersects, and last looper device, it carries out oval arc reciprocating motion, place, needle plate side and following looper device stitching intersect, and intersect with eedle stitching above the eedle; An eedle suture passes eedle, following looper device suture passes down looper device and one and goes up looper device suture and pass the looper device, three-way crossing one another carried out the overseam of cloth, it is characterized in that: a band hollow-core construction in the above-mentioned looper device in the upper and lower at least looper device, introduce the hole by this hollow-core construction looper device suture from the suture of looper device and correctly lead to the suture fairlead of splaying.
2. according to the looper device of claim 1, it is characterized in that described hollow-core construction is made up of hollow member.
3. according to the looper device of claim 1, it is characterized in that described hollow-core construction is made up of pipe fitting and groove, by described pipe fitting, looper device suture from the looper device introduce that the hole passes to correctly that it splays the suture fairlead, and described pipe fitting and groove applying.
4. according to the looper device of claim 1, it is characterized in that described hollow-core construction is made up of groove and cover plate, by described groove, looper device suture correctly passes to the suture outlet that it is splayed from looper device intake, and described cover plate covers groove.
5. by any one looper device in the claim 1 to 4, it is characterized in that described looper device suture introduces the hole and make infundibulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92101784 CN1036478C (en) | 1992-03-16 | 1992-03-16 | Looper for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92101784 CN1036478C (en) | 1992-03-16 | 1992-03-16 | Looper for sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1076497A CN1076497A (en) | 1993-09-22 |
| CN1036478C true CN1036478C (en) | 1997-11-19 |
Family
ID=4939308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92101784 Expired - Fee Related CN1036478C (en) | 1992-03-16 | 1992-03-16 | Looper for sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036478C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4967677A (en) * | 1989-01-03 | 1990-11-06 | Hosei Mishin Seizo Kabushiki Kaisha | Composite sewing machine with single needle for lock and overlock stitches |
-
1992
- 1992-03-16 CN CN 92101784 patent/CN1036478C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4967677A (en) * | 1989-01-03 | 1990-11-06 | Hosei Mishin Seizo Kabushiki Kaisha | Composite sewing machine with single needle for lock and overlock stitches |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1076497A (en) | 1993-09-22 |
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Legal Events
| 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 | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19971119 |