CN101538784A - Gripper for a double lock-stitch sewing machine - Google Patents
Gripper for a double lock-stitch sewing machine Download PDFInfo
- Publication number
- CN101538784A CN101538784A CN200910128830A CN200910128830A CN101538784A CN 101538784 A CN101538784 A CN 101538784A CN 200910128830 A CN200910128830 A CN 200910128830A CN 200910128830 A CN200910128830 A CN 200910128830A CN 101538784 A CN101538784 A CN 101538784A
- Authority
- CN
- China
- Prior art keywords
- rotating shuttle
- hook spare
- spring
- hook
- bobbin case
- 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.)
- Granted
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010417 needlework Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
- D05B57/10—Shuttles
- D05B57/14—Shuttles with rotary hooks
- D05B57/143—Vertical axis type
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/26—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices
- D05B57/265—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices for looptakers with vertical axis
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to a gripper for a lock-stitch sewing machine, including a gripper-body (24) and a bobbin case (21), wherein the bobbin case (21) is moveably arranged around a vertical axis (9) in a gripper-body (24) and comprising a base (33) and a bearing pin (25) concentric to the axis. A spool supporting device (31a) is movably arranged on the bearing pin in a direction of the axis for retaining a gripper thread bobbin (26). An extended spring (34) is arranged between the base and the spool supporting device. A brake spring (36) is operated between the spool supporting device and the gripper thread bobbin.
Description
Technical field
The present invention relates to a kind of hook spare that is used for lock stitch sewing machine, comprise the cup-shaped hook spare body with a bobbin case (shuttle casket), this bobbin case is installed in the hook spare body with around axis rotation, and comprises a bottom and a fulcrum post concentric with described axis.
Background technology
From DE 195 10 830 C2 (corresponding to JP Hei-8-59-489; KR 7521/1996; CH ZL96 104 262.1) the hook spare of known a kind of the type in wherein, is provided with one and releases spring between a bobbin case bottom and an adjacent ribs.And this known hook spare has a locking device, and this locking device comprises a securing rod that can pivot between unlocked position that almost is parallel to described axis extension and the latched position of almost extending perpendicular to described unlocked position; In described latched position, the spheroid that is used as brake apparatus radially outwards presses the propeller boss of rotating shuttle, produces braking action thus.This design is very complicated.
Summary of the invention
The hook spare that the purpose of this invention is to provide a kind of general type of simplicity of design, it can reduce or Sewing machines is avoided the rotating shuttle ahead running when stopping at sewing velocity.
According to the present invention, described purpose realizes that by a kind of hook spare that is used for lock stitch sewing machine this hook spare comprises:
-cup-shaped hook spare body;
-bobbin case, this bobbin case are installed in and are used for around axis rotation in the hook spare body and comprise
--the bottom and
--the fulcrum post concentric with described axis;
-being used to hold the rotating shuttle supporting arrangement of hook line rotating shuttle, this rotating shuttle supporting arrangement is arranged on the fulcrum post, is used at the axis direction superior displacement;
-be arranged on the bottom and the rotating shuttle supporting arrangement between the release spring; And
-the tripping spring that between rotating shuttle supporting arrangement and hook line rotating shuttle, works.
Utilize the present invention, make rotating shuttle braking and do not make the function of ahead running and the function when changing rotating shuttle rotating shuttle released is separated from each other in simple mode.Tripping spring makes the rotating shuttle braking, in case the undesirable ahead running of principal vertical line.The spring force of described tripping spring may be selected to and makes to have only this function to be carried out best.And be used for the release spring that rotating shuttle is released can be designed to can obtain carrying out enough spring forces of this function.
Description of drawings
By accompanying drawing, to can obvious further feature of the present invention the explanation of embodiments of the invention, advantage and details, in the accompanying drawings:
Fig. 1 shows the schematic side elevation that the part of Sewing machines is cut open;
Fig. 2 shows according to hook spare of the present invention, wherein is plugged with the operation rotating shuttle;
Fig. 3 shows the situation of hook spare when rotating shuttle is pushed out according to Fig. 2; And
Fig. 4 shows the partial view that comprises a release guard member of Fig. 3.
The specific embodiment
Lock stitch sewing machine shown in Figure 1 comprises the lower basal plate 3 of upper arm 1, vertical column 2 and housing shape routinely.The arm axle 4 that the shank 5 that is used to make band pin 6 moves up and down is installed in arm 1.Arm axle 4 also makes 7 motions of line bar.
In substrate 3, be equipped with and be driven and around the vertical hook spare 8 of a vertical axis 9 rotation, just lock-type chain stitch hook spare 8.Supporting hook spare 8 also can be mounted to rotation in the hook spare support housing 11 that is being arranged in the substrate 3 around the hook spare driving shaft 10 of axis 9 motions.Hook spare driving shaft 10 is driven by means of helical gear device 13 by power transmission shaft 12.12 of power transmission shafts are driven by means of the band drive unit 14 that tooth is arranged by arm axle 4.The gearratio that the band drive unit 14 of tooth is arranged is 1: 1.Being dimensioned to of helical gear 13 makes that gearratio is 1: 2.This means, arm axle 4 or power transmission shaft 12 every rotations once, hook spare 8 will rotate twice.For this reason, the quantity that is arranged on the tooth of the big driving helical gear 15 on the power transmission shaft 12 is arranged on the twice of the driven helical gear 16 on the hook spare driving shaft 10.
Above hook spare 8, the needle plate 17 of band pin hole 18 is installed at substrate 3 upsides.Hook spare 8 has hook spare tip 19, and the most advanced and sophisticated directly operation process of this hook spare enters the pin 6 in the pin hole 18, and can catch the needlework 20 by described pin 6 guiding.Bobbin case 21 is installed in the hook spare 8, and this bobbin case can rotate freely around axis 9 with respect to hook spare 8.The support ring 23 of the ring-shaped bearing bulge loop 22 of bobbin case 21 on the cup-shaped hook spare body 24 that is arranged on hook spare 8.Bobbin case 21 is mounted to the needlework 20 that make hook spare tip 19 be caught in a conventional manner and can be directed around bobbin case 21.
Shown in Fig. 2-4, bobbin case 21 also is cup-shaped substantially.Bobbin case 21 has the hollow fulcrum post 25 concentric with longitudinal center's axis 9 of hook spare driving shaft 10 and hook spare 8, and this hollow fulcrum post holds a hook line rotating shuttle 26.Described hook line rotating shuttle 26 comprises hollow hub 27 and upper flange 28 and lower flange 29 routinely.Rotating shuttle 26 is after being removed from bobbin case 21, be provided with needlework source of supply 30 before being inserted in the bobbin case 21 once more.
Bobbin case 21 directly is not installed on the fulcrum post 25, can axially be shifted on the fulcrum post 25 and be provided with on the carrying sleeve 31 of lower support plate 32 but be installed to.Carrying sleeve 31 and supporting plate 32 have formed rotating shuttle supporting arrangement 31a together.Be provided with the release spring 34 that is shaped as volute spring between the bottom 33 of bobbin case 21 and supporting plate 32, this spring is in the diameter d that only is equivalent to spring wire 35 according to the axial range under the compressive state of Fig. 2.Therefore under compressive state, releasing 34 on spring need be in a little space between bobbin case 21 bottoms 33 and the supporting plate 32.
Be provided with soft flat disc spring 36 between the lower flange 29 of supporting plate 32 and rotating shuttle 26, unique function of this disc spring 36 is that rotating shuttle 26 is applied little brake force.
Be pivotably mounted in the fulcrum post 25 and comprise that two securing rods 38 of contact-making surface 39,40 that relative to each other are offset 90 ° are as locking device 37.Can opposition supporting member 42 settings at axis 9 direction superior displacements be used for described contact-making surface 39,40 in the recess 41 of fulcrum post 25, this opposition supporting member 42 presses one of described contact-making surface 39,40 by the spiral compression spring 42a of prestrain.When bar 38 turned over 90 ° with respect to axis 9, the contact-making surface 39 of bar 38 made rotating shuttle supporting arrangement 31a overcome the power of release spring 34 towards bobbin case 21 bottoms, 33 displacements, as shown in Figure 2 against opposition supporting member 42.Then, bar 38 is against carrying sleeve 31.In this position, the little brake force that is used as the leaf spring (disc spring) 36 of tripping spring makes the upper flange 28 of rotating shuttle 26 press bar 38, and this produces little friction torque between rotating shuttle 26 and bobbin case 21.Because release the higher axial force between spring 34 and the rotating shuttle supporting arrangement 31a, rotating shuttle supporting arrangement 31a non-rotatably remains in the bobbin case 21.
When bar 38 almost extended on axis 9 directions, in other words, when rotating shuttle supporting arrangement 31a discharges from bobbin case 21 and is pushed out spring 34 when upwards pushing in Fig. 3, the position shown in Figure 4, contact-making surface 40 was against opposition supporting member 42.In this position, the operator can take out rotating shuttle 26 from rotating shuttle supporting arrangement 31a and therefore from bobbin case 21.
As shown in Figure 4, bobbin case 21 have the supporting plate 32 that is used for supporting arrangement 31a, as stop part-promptly release guard member-screw 43, this stop part prevents that rotating shuttle supporting arrangement 31a from being released bobbin case 21 fully, and not with flange 28,29 effects of rotating shuttle 26.
Claims (8)
1. be used for the hook spare of lock stitch sewing machine, comprise
-cup-shaped hook spare body (24);
-bobbin case (21), this bobbin case are installed in the hook spare body (24) being used for around an axis (9) rotation, and this bobbin case comprises
--bottom (33) and
--the fulcrum post (25) concentric with described axis (9);
-being used to hold the rotating shuttle supporting arrangement (31a) of hook line rotating shuttle (26), this rotating shuttle supporting arrangement (31a) is arranged on the fulcrum post (25), is used at axis (9) direction superior displacement;
-be arranged on the release spring (34) between bottom (33) and the rotating shuttle supporting arrangement (31a); And
-the tripping spring (36) that between rotating shuttle supporting arrangement (31a) and hook line rotating shuttle (26), works.
2. hook spare according to claim 1 is characterized in that, described rotating shuttle supporting arrangement (31a) is included in that fulcrum post (25) is gone up the carrying sleeve (31) of guiding and towards the supporting plate (32) of described bottom (33).
3. hook spare according to claim 2 is characterized in that, described release spring (34) is arranged between bottom (33) and the supporting plate (32).
4. hook spare according to claim 1 is characterized in that, described release spring (34) is a volute spring.
5. hook spare according to claim 2 is characterized in that, described tripping spring (36) is arranged between the adjacent flange (29) of supporting plate (32) and hook line rotating shuttle (26).
6. hook spare according to claim 1 is characterized in that, described tripping spring is flat disc spring (36).
7. hook spare according to claim 1, it is characterized in that, described bobbin case (21) is provided with locking device (37), this locking device comprises and can and be approximately perpendicular to the securing rod (38) that pivots between the latched position of described unlocked position extension at the unlocked position that is roughly parallel to axis (9) extension, in latched position, described hook line rotating shuttle (26) presses securing rod (38) by tripping spring.
8. hook spare according to claim 2 is characterized in that, described bobbin case comprises and the interactional release guard member of supporting plate (32) (43).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810014913 DE102008014913B3 (en) | 2008-03-19 | 2008-03-19 | Gripper for a double lockstitch sewing machine |
| DE102008014913.6 | 2008-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101538784A true CN101538784A (en) | 2009-09-23 |
| CN101538784B CN101538784B (en) | 2012-12-05 |
Family
ID=40794703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910128830 Active CN101538784B (en) | 2008-03-19 | 2009-03-17 | Gripper for a double lock-stitch sewing machine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2103725B1 (en) |
| JP (1) | JP2009226214A (en) |
| KR (1) | KR101534860B1 (en) |
| CN (1) | CN101538784B (en) |
| DE (2) | DE102008014913B3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278437A (en) * | 2013-07-03 | 2015-01-14 | 启翔股份有限公司 | Horizontal rotating shuttle of sewing machine |
| CN113979227A (en) * | 2020-07-27 | 2022-01-28 | 蛇目缝纫机工业株式会社 | Bobbin |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH700442A1 (en) * | 2009-02-17 | 2010-08-31 | Bernina Int Ag | Locking device for a bobbin case for a lower thread bobbin. |
| IT1400006B1 (en) * | 2010-03-15 | 2013-05-09 | Cracco | PERFECTED CROCHET GROUP, PARTICULARLY FOR SEWING MACHINES. |
| CN109695104B (en) * | 2019-02-20 | 2020-10-16 | 湖北佐尔美服饰有限公司 | Double-faced nylon automatic sewing machine and rotating shuttle structure thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE263525C (en) * | ||||
| US319448A (en) * | 1885-06-09 | Tension device for sewing-machines | ||
| DE2454121C3 (en) * | 1973-12-04 | 1982-03-04 | VEB Nähmaschinenwerk Wittenberge, DDR 2900 Wittenberge | Circulating gripper for sewing machines |
| DD112591A3 (en) * | 1974-12-04 | 1975-04-20 | ||
| US4009670A (en) * | 1975-11-24 | 1977-03-01 | Beatty Thomas Mitchell | Rotary hook sewing machine |
| DE7540565U (en) * | 1975-12-19 | 1976-05-06 | Duerkoppwerke Gmbh, 4800 Bielefeld | CONTROLLED BRAKE DEVICE FOR THE LOOP THREAD SPOOL OF A DOUBLE STEPSTITCH SEWING MACHINE |
| DE19510830C2 (en) | 1995-03-24 | 2001-11-22 | Duerkopp Adler Ag | Bobbin brake for the hook thread bobbin of a lockstitch sewing machine |
| DE19840953C1 (en) * | 1998-09-08 | 1999-10-28 | Duerkopp Adler Ag | Bobbin support in bobbin case for looper on double lockstitch sewing machine |
| ATE396293T1 (en) * | 2003-12-10 | 2008-06-15 | Bernina Int Ag | LOCKING DEVICE FOR A BOTTOM THREAD BOBBIN |
-
2008
- 2008-03-19 DE DE200810014913 patent/DE102008014913B3/en not_active Expired - Fee Related
-
2009
- 2009-02-18 DE DE200950000519 patent/DE502009000519D1/en active Active
- 2009-02-18 EP EP20090002230 patent/EP2103725B1/en active Active
- 2009-03-09 KR KR1020090019924A patent/KR101534860B1/en active IP Right Grant
- 2009-03-17 CN CN 200910128830 patent/CN101538784B/en active Active
- 2009-03-18 JP JP2009065871A patent/JP2009226214A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278437A (en) * | 2013-07-03 | 2015-01-14 | 启翔股份有限公司 | Horizontal rotating shuttle of sewing machine |
| CN113979227A (en) * | 2020-07-27 | 2022-01-28 | 蛇目缝纫机工业株式会社 | Bobbin |
| TWI774456B (en) * | 2020-07-27 | 2022-08-11 | 日商車樂美縫衣機工業股份有限公司 | Bobbin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101538784B (en) | 2012-12-05 |
| EP2103725A1 (en) | 2009-09-23 |
| JP2009226214A (en) | 2009-10-08 |
| DE102008014913B3 (en) | 2009-07-30 |
| DE502009000519D1 (en) | 2011-05-26 |
| KR20090100250A (en) | 2009-09-23 |
| EP2103725B1 (en) | 2011-04-13 |
| KR101534860B1 (en) | 2015-07-07 |
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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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210817 Address after: Bielefeld, Germany Patentee after: Durkep Adler Co.,Ltd. Address before: Bielefeld, Germany Patentee before: D rkopp Adler AG |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Bielefeld, Germany Patentee after: Dukepu Aihua Co.,Ltd. Country or region after: Germany Address before: Bielefeld, Germany Patentee before: Durkep Adler Co.,Ltd. Country or region before: Germany |