CN1226618A - Tread controller for sewing machine - Google Patents
Tread controller for sewing machine Download PDFInfo
- Publication number
- CN1226618A CN1226618A CN 99101805 CN99101805A CN1226618A CN 1226618 A CN1226618 A CN 1226618A CN 99101805 CN99101805 CN 99101805 CN 99101805 A CN99101805 A CN 99101805A CN 1226618 A CN1226618 A CN 1226618A
- Authority
- CN
- China
- Prior art keywords
- shuttle
- tread
- crank arm
- shuttle body
- control element
- 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.)
- Pending
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 11
- 210000000689 upper leg Anatomy 0.000 claims description 14
- 238000010417 needlework Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 239000002991 molded plastic Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/02—Loop takers, e.g. loopers for chain-stitch sewing machines, e.g. oscillating
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
A tread controller for sewing machine having a oscillating shuttle includes: an oscillating shuttle body having a shuttle core cover drived in a shuttle carrier; an oscillating shuttle hold drived asway which has a crank arm fixed on the oscillating shuttle shaft and a bow connected to the crank arm; and a tread controller for sewing machine with elasticity which is installed on the oscillating shuttle hold. The tread controller for sewing machine includes a supporter fixed on the crank arm and a spring arm tightly connected with the supporter. The spring arm sticks against the rear arm of the oscillating shuttle with a slight force and stops in an arresting device which is matchable to a side edge extending radially and opposite to the top oscillating shuttle of the oscillating shuttle.
Description
The present invention relates to a kind of tread controller that is used to be furnished with the Sewing machines of shuttle as described in the preamble as claimed in claim 1.
A kind of like this tread controller that is used for shuttle (CB-shuttle) was disclosed among the DE 3342770A1, use a steel wire camber member made from elastic wire as the suture control element thereon, this camber member one end is fixed in the shuttle holder, and the other end rides on the rear wall of shuttle body.The steel wire camber member stops back strand of the suture needle coil when the suture needle coil guides around bobbin case is circuitous, and prevents that by this way the thread take-up tension lever that above-mentioned coil thigh is sewed machine too quickly from drawing liter.
Under the shuttle situation, the shuttle holder generally be by one be fixed on the shuttle axle crank arm with one therewith crank arm link to each other integratedly, constitute with the contacted camber member of shuttle body, in DE3342770A1, then use one whole disk to replace a crank arm, this disk has the ring-shaped edge district of a bending corresponding to shuttle, and the camber member of lateral arrangement just is arranged on this marginal zone.In order to hold the steel wire camber member, two holes are arranged in the ring-shaped edge district of shuttle holder, these two holes and bending are passed on the rear side of shuttle holder in two ends of steel wire camber member.Because under above-mentioned tread controller situation, in order to hold the steel wire camber member, the shuttle holder must be designed and mated by a kind of ad hoc fashion, install on the previous Sewing machines of supplying out so be not suitable for mending as a kind of suture control element of steel wire camber member design, its reason is that original shuttle holder need can with a new correspondingly adaptive shuttle holder replacing again.
Task of the present invention is for the Sewing machines of being furnished with shuttle provides a kind of tread controller, and this control device also can be carried out simply under certain condition and mend dress.This task is to solve by the feature of claim 1 characteristic.
Because the suture control element that the present invention proposes is as the design of plug-in parts, so, only need in very short time, remove the releasable holding ring of shuttle and shuttle body just for the benefit dress of this suture control element.Owing to be that what instrument this measure need not use, so even not clever operator also can be competent at.For the above reasons, the suture control element that can without difficulty the present invention be proposed is whenever and wherever possible mended and is installed on the shuttle.
Some favourable improvements in every dependent claims, have been addressed.
An embodiment below with reference to accompanying drawings does more detailed explanation to the present invention.In the accompanying drawing:
The schematic diagram of Fig. 1 suture control element;
The view of shuttle body of Fig. 2 and shuttle holder and plug-in mounting suture control element thereon;
The view of the shuttle that Fig. 3 is complete;
The shuttle of the local expression of Fig. 4 to 6 is the view on the diverse location of shuttle body when making a circulation the guide slit needle thread loop around bobbin case.
Only be presented as in the accompanying drawing and understand those accessaries of sewing machine required for the present invention.Show a bright complete shuttle 1 among Fig. 3, it generally is referred to as the CB-shuttle.
Shuttle 1 is furnished with shuttle race 2 and a demountable decorative cover 3 of a fixed-site by known way, and the latter two constitute a guide rail that is used for shuttle body 4 jointly.A bobbin case 5 is inserted in the shuttle body 4, and this bobbin case is carrying peg or spindle.In order to drive shuttle body 4, use a shuttle holder 7, this shuttle holder is fixed on the shuttle axle 6 that can swing.Above-mentioned shuttle holder is formed from shuttle axle 6s according to the crank arm that radially extends 8, a camber member 9 and a buffer spring 10 that is fixed on the camber member inboard by one.
In order to form double-lock type stitch, shuttle 1 is worked together by the pin that moves up and down 11 and a thread take-up tension lever 12 of the same guiding needlework of known way N.
By the present invention's suture control element 13 that manufacturing forms as plastic injection piece by a supporter 14 with one therewith the spring arm 15 that securely links to each other of supporter constitute.Supporter 14 is made of a camber member 16 that is U-shape basically, and this camber member has two thigh springy portions 17.For suture control element 13 is remained on the crank arm 8 safely and reliably, thigh portion 17 distance to each other in installment state not is less than the width of crank arm 8.In order to reach above-mentioned safe and reliable maintenance purpose, can utilize in addition on two terminations that are formed in camber member 16 to projecting inward convex shoulder 18.Two personal share portions 17 are connected with each other by a lapping plate 19.The spring arm 15 that extends out according to tangential direction from the outside of camber member 16 has a kind of configuration L-shaped basically, that stretch out from the plane of camber member 16, this member can so adapt to the shape of the rear wall of shuttle body 4, makes the end of spring arm 15 be adjacent on the rear wall of shuttle body 4 so that very little power is flat for sleeping inly.Spring arm 15 terminates in the stop part 20 of a rectangular bending.
Stop part 20 be opposite to shuttle top 21 side 22 and so cooperate according to the shuttle body 4 that radially extends, make and be docile and obedient clockwise when swinging at shuttle body 4, stop part 20 just in time is attached on the side 22, perhaps forms a gap with this side, and the width in this gap is less than the diameter of needlework.When shuttle holder 7 when counterclockwise promoting shuttle body 4, between top 21 the end away from shuttle of buffer spring 10 and shuttle body 4 and position that this spring matches, open up a logical crack to be used for the suture needle coil.Meanwhile, also open up a gap between stop part 20 and side 22, perhaps enlarge a gap that had originally existed already under another swaying direction condition, in the case, the width in this gap is equivalent to the diameter of needlework at least.
The operation principle of suture control element 13 is as follows:
Fig. 4 represents the moment of a needle tracking forming process, and just after following process is finished: shuttle top 21 catches on the suture needle coil when the swing of carrying out clockwise, and has begun the suture needle coil is enlarged to realize that it centers on the coiling of bobbin case 5.Under above-mentioned swaying direction condition, the end away from shuttle top 21 of buffer spring 10 is adjacent on shuttle body 4, so a very narrow gap is arranged between the side 22 of stop part 20 and shuttle body 4.
Do another time when motion coiling at the suture needle coil, the front side that the coil thigh VS of front freely crosses bobbin case 5, the coil thigh HS of back then is directed and mistake between the rear wall of shuttle body 4 and spring arm 15.In case what the coil thigh HS of back reached spring arm 15 in another time coiling motion process flexibly abuts in end on the shuttle body 4, its continuation campaign is just slightly checked.Consequently: during around the following some coiling of bobbin case 5, the anterior divisions VS of suture needle coil catches up with the front at back gang HS at the suture needle coil.Crossing the descending most after the point of bobbin case 5, a back gang HS is also checked by the stop part 20 of spring arm 15 by way of parenthesis.
Fig. 5 shows the bright moment, promptly is the moment that shuttle body 4 has reached its terminal point of being docile and obedient the oscillating motion that clockwise carries out.At this constantly, thread take-up tension lever 12 has upwards drawn the part of suture needle coil, and that just at first upwards draw is the preceding coil thigh VS that is in free state.Because back coil thigh HS is checked by spring arm 15 and stop part 20 in this moment, coil thigh HS does not participate in above-mentioned moving upward after the institute.
Because beginning according to anticlockwise oscillating motion along with shuttle body 4, between stop part 20 and side 22, form a gap, in other words the gap is widened to a certain degree, make back coil thigh HS can pass this gap, and do not walk around spring arm 15 in this, therefore when on continuing, drawing the suture needle coil after coil thigh HS also simultaneously thereupon by on draw.But because needlework are deflected slightly when passing above-mentioned gap, thus at this moment must apply small brake force to it, so that preceding coil thigh VS also can preferentially be tightened up in this terminal stage of needle tracking forming process.Just can prevent reliably in such a way back coil thigh HS too quickly by on draw.
Claims (6)
1. be used to be furnished with the tread controller of the Sewing machines of a shuttle (1), it is made up of following part: a shuttle body (4) that in a shuttle race (2), is directed, and it is furnished with a bobbin case (5) that is used for shuttle thread (G); The shuttle holder (7) that quilt swingingly drives, it has the crank arm (8) and the camber member (9) that links to each other of crank arm therewith that are fixed on the shuttle axle (6); And be furnished with a suture control element springy (13) that is placed in the shuttle holder (7), this control element is used for keeping in short time back strand (HS) of suture needle coil when the suture needle coil is introduced sewing; It is characterized in that: suture control element (13) comprises the supporter (14) and the spring arm (15) that securely links to each other of supporter therewith that are inserted on the crank arm (8), this spring arm abuts on the postbrachium of shuttle body (4) with small power, and terminate in one basically in the stop part of rectangular bending (20), this stop part and shuttle body (4) to be opposite to shuttle top (21) suitable according to the side (22) that radially extends.
2. tread controller as claimed in claim 1, it is characterized in that: be docile and obedient clockwise when carrying out oscillating motion at shuttle body (4), stop part (20) abuts on the side (22) of shuttle body (4), perhaps form a gap on the opposite of side (22), the width in this gap is less than the diameter of needlework; Subsequently when shuttle body (4) when counterclockwise carrying out oscillating motion, stop part (20) forms a bigger gap on the opposite of the side (22) of shuttle body (4), the width in this gap is equivalent to the diameter of needlework at least.
3. tread controller as claimed in claim 1 or 2 is characterized in that: supporter (14) is made of a camber member (16) that is U-shape basically, and it elastic force is arranged wales the side of crank arm (8).
4. tread controller as claimed in claim 3 is characterized in that: two personal share portions (17) of camber member (16) are connected with each other by a lapping plate (19).
5. as claim 3 or 4 described tread controllers, it is characterized in that: on two ends of thigh portion (17), be provided with an inwardly protruded convex shoulder (18) separately.
6. as one or several described tread controllers of claim 1 to 5, it is characterized in that: suture control element (13) is produced as an integral molded plastic profiled member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29801459U DE29801459U1 (en) | 1998-01-29 | 1998-01-29 | Thread control for sewing machines |
| DE29801459.9 | 1998-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1226618A true CN1226618A (en) | 1999-08-25 |
Family
ID=8051897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99101805 Pending CN1226618A (en) | 1998-01-29 | 1999-01-29 | Tread controller for sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1226618A (en) |
| DE (1) | DE29801459U1 (en) |
| TW (1) | TW429976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562468A (en) * | 2014-12-19 | 2015-04-29 | 拓卡奔马机电科技有限公司 | Shuttle hook mechanism with automatic gap adjusting function |
-
1998
- 1998-01-29 DE DE29801459U patent/DE29801459U1/en not_active Expired - Lifetime
-
1999
- 1999-01-27 TW TW88201283U patent/TW429976U/en not_active IP Right Cessation
- 1999-01-29 CN CN 99101805 patent/CN1226618A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562468A (en) * | 2014-12-19 | 2015-04-29 | 拓卡奔马机电科技有限公司 | Shuttle hook mechanism with automatic gap adjusting function |
Also Published As
| Publication number | Publication date |
|---|---|
| TW429976U (en) | 2001-04-11 |
| DE29801459U1 (en) | 1998-03-26 |
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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 | ||
| ASS | Succession or assignment of patent right |
Owner name: VIKING SEWING MACHINE AG Free format text: FORMER OWNER: G. M. PFAFF AG Effective date: 20011114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20011114 Address after: Swedish huskvarna Applicant after: Viking sewing machines Ltd Address before: The Federal Republic of Germany Kaiser Kaiserslautern Applicant before: G. M. Pfaff AG |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |