CN1044927C - Braker of bobbin of sewing thread bobbin for double lock stitching sewing machine - Google Patents
Braker of bobbin of sewing thread bobbin for double lock stitching sewing machine Download PDFInfo
- Publication number
- CN1044927C CN1044927C CN96104262A CN96104262A CN1044927C CN 1044927 C CN1044927 C CN 1044927C CN 96104262 A CN96104262 A CN 96104262A CN 96104262 A CN96104262 A CN 96104262A CN 1044927 C CN1044927 C CN 1044927C
- Authority
- CN
- China
- Prior art keywords
- bobbin
- axis
- peg
- spindle
- braker
- 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
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 23
- 230000010355 oscillation Effects 0.000 claims description 4
- 239000002775 capsule Substances 0.000 abstract 2
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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)
- Braking Arrangements (AREA)
Abstract
The bobbin brake mechanism for the lower threaded bobbin, of a double backstitch sewing machine, has a bobbin capsule (28) in the looper (13), with an opening (42) on an axis (30) parallel to the centre longitudinal axis (29), with a lower thread bobbin (31) with a hub (32) on the axis (30). A locking lever (39), on a pivot axis, swings in the opening (42) on the axis (30) between a locking and a release position. In opening (42) are 2 surfaces (40,41), displaced from each other by 90 deg , where the gap (a) between the laying surface (40) and the swing axis in the locked position is greater than the gap (b) between the laying surface (41) for the lever (39) and the swing axis in the release setting. A sliding counter-piece (43) moves in the opening (42) along the centre longitudinal axis (29) to bring the laying surface (41) into position. A locking spring (44) bears on one side against the counter-piece (43) and, on the other side, gives support on the opening (42) axis (30) against one of the laying surfaces (40,41) of the locking lever (39). A brake member (48) presses against the inner surface (50) of the hub (32), aligned radially to the mean centre axis (29) of the bobbin capsule (28) extending into the axis (30) of the opening (42), activated by an operating unit (52) sliding in the opening (42) along the axis (29), against the action of a brake spring (53).
Description
The present invention relates to a kind of braker of bobbin that is used for the suture peg or spindle of double-lock type stitch sewing machine.
U.S. Pat-PS4074645 discloses a kind of shuttle that is used for double-lock type stitch sewing machine, is provided with a bobbin case in this shuttle body.This bobbin case has the pin class axle of the band shrinkage pool at a root center, and this is used to receive a common suture peg or spindle.A chucking bar is set in the reception shrinkage pool of pin swingably, and this chucking bar is stuck in peg or spindle in the bobbin case on the position of its swing, and can take out or change peg or spindle when it is in the position substantially parallel with central axis.Be provided with a braker of bobbin in shrinkage pool, this brake comprises a brake component that braking is spherical, and this brake component is arranged in the hole of axle and can be pressed on the inner surface of peg or spindle sleeve.The piston on a band inclined-plane is located in the shrinkage pool as control piece, and this piston can move on the direction of central axis and make along ball aperture to outside extrusion and can slide back by these actions.This control piece can activate by a push rod, and this root push rod is provided in a side of in the shuttle axle.Because sewing thread is that the space that the shuttle body of the encirclement by shuttle and fixed-site ground are supported between the peg or spindle housing in the shuttle body is passed after catch, so can not use braker of bobbin in the process of normally sewing.This braker of bobbin can only work in the work of sewing thread shearing device.Like this, a peg or spindle in the end needle tracking is braked by the action of corresponding braker of bobbin after forming, and avoids therefrom being turned round by the caused peg or spindle of inertia.Like this in normal sewing process, the phenomenon of changeing after can not when sharply reducing revolution, peg or spindle occurring.
A kind of double-lock type stitch sewing machine is disclosed among German patent DE-PS1785130 (patent families of U.S. Pat-PS3476068), peg or spindle wherein meshes like this by a braker of bobbin that is in engagement usually, promptly applies a fricting movement usually on peg or spindle.For this reason, the element on a kind of inner surface that is stuck in the peg or spindle sleeve of suggestion or one are contained in the screw on the peg or spindle flange of being stuck on the chucking bar.When the braker of bobbin on being stuck in sleeve interior surface hinders peg or spindle to take out from bobbin case, then the screw on the clamping bar will make brake pin and be made dirty, this will form uneven fricting movement on peg or spindle, thereby will cause the normal operating conditions of braker of bobbin to be guaranteed.
The objective of the invention is to, a kind of braker of bobbin of general type is provided, this brake is working properly and do not hinder from bobbin case and to take out peg or spindle or to change peg or spindle.
For achieving the above object, according to the invention provides a kind of braker of bobbin that is used for the suture peg or spindle of double-lock type stitch sewing machine, have: a bobbin case that is located in the shuttle, this bobbin case comprise one the band shrinkage pool with the center longitudinal axis line parallel the axle; A suture peg or spindle, this peg or spindle comprises the sleeve of a receiving axes; One is supported on the chucking bar that can swing round swinging axle in the shrinkage pool of axle between chucking that is used for peg or spindle and the position of unclamping, this bar comprises that two are located at and are in the supporting surface that 90 degree are provided with in the shrinkage pool, and the supporting surface that is used to make bar be in the chucking position to the distance of axis of oscillation makes bar be in the distance of the supporting surface of released position to axis of oscillation greater than being used to; The bearing that can in shrinkage pool, move, supporting surface along central axis can support with this face on; An one side is supported in the shrinkage pool that is supported on axle on the bearing on the other hand, always bearing is pressed to the garter spring of the supporting surface of chucking bar; In hole that is located at axle and therefrom outstanding, radially the central axis of bobbin case is pressed in brake component on the inner surface of sleeve relatively; One can be in shrinkage pool on the direction of central axis be provided with movably, against the brake component setting and be used for the control piece of brake component; One side is against control lever and on the other hand against the tripping spring of seat supports.Braker of bobbin is closed all the time when putting into peg or spindle and chucking chucking bar on the one hand; On the other hand when opening chucking during bar, that is in the chucking of cancellation peg or spindle in bobbin case, unclamp braker of bobbin.Can successfully take out then and the peg or spindle of packing into.Particularly pass through one embodiment of the present of invention, promptly between bobbin case and peg or spindle, be provided with one and on the released position of chucking bar, propel spring as can be known from bobbin case what peg or spindle was released at least in part, utilize this device, propel spring for one and can when unclamping chucking, successfully peg or spindle be released bobbin case.
According to embodiments of the invention, brake component is spherical.Control piece is spherical.Tripping spring launches in the released position of chucking bar at least basically.
Further unique distinction of the present invention will be drawn the description of an embodiment with reference to the accompanying drawings by following.Wherein:
Fig. 1 is the front view of a double-lock type stitch sewing machine;
Fig. 2 is the shuttle with bobbin case of broken section and the peg or spindle that blocks;
Fig. 3 has the cutaway view of the bobbin case of the peg or spindle that unclamps.
Double-lock type stitch sewing machine 1 is supported on the workbench 2, and this Sewing machines 1 comprises a pillar that extends substantially vertically 3, and pillar 3 levels are stretched out a upper casing class arm 4 and a following shelly substrate 5 relatively.Sewing machines 1 is common C shape.An arm axle 6 is supported in the arm 4, outside pillar 3, fixes a handwheel 7 at an end of arm axle.Be located at by one that controllable drive unit 8 drives arm axles 6 under the workbench 2, this drive unit is made of the motor 9 and the control module 10 of a band clutch and brake unit basically.Realize by motor 9 to the power transmission dependence V belt 11 of handwheel 7.
Usually, utilize arm axle 6 to drive the shank 12 that is supported on arm 4 front portions up and down.Simultaneously, be that double revolution drive shuttle 13 by a rotating drive transmitting device that is located in pillar 3 and the substrate 5 with the motion of relative shank 12 by arm axle 6.Position sensor 14 rotations link to each other with arm axle 6 regularly, and this sensor transmits the signal of representing arm axle 6 revolutions on the one hand, will represent arm axle 6 angle position signals to transfer to control module 10 by signal transmssion line 15 on the other hand.
A bobbin 16 is set on arm 4, and storing on it has sewing thread 17 and this line to pull out from it.By a tumbler 18 yarn tensioner of sewing thread 17 guiding 19 is also derived through thread take-up tension lever 20 thus.Sewing thread 17 arrives pin 22 by clamp 21 downwards from thread take-up tension lever 20 perpendicular, and pin 22 is located on the shank 12.Sewing thread 17 does not have the pinprick of expression in detail to pass from one.Pin 22 passes a pin hole 23 along with sewing action up and down, and this pin hole is arranged in a pinhole plate 24 of aiming at workbench 2 top basically and being positioned on the shuttle 13.The shuttle point 25 of shuttle 13 moves past pin 22 on its vertical path.
From the figure as can be seen, shuttle 13 comprise one basically can be by the jar shape shuttle body 1 of shuttle drive shaft, in this shuttle body, supporting to fixed-site a bobbin case 28 in a usual manner, and be fixed sewing thread 17 to move round bobbin case 28 by 25 clampings of shuttle point.
Especially as can be seen from Figure 3, bobbin case 28 also is essentially a jar shape.Bobbin case 28 comprises the axle 30 of a pin class, and this central longitudinal axis 29 with shuttle driving shaft 26 and shuttle 13 is coaxial, and axis 29 also is the axis of shuttle driving shaft 26 and shuttle 13.Suture peg or spindle 31 can place on the axle 30.Suture peg or spindle 31 generally includes 32, one upper flanges 33 of sleeve and lower flange 34 of a hollow.According to storing suture 35 on selected bobbin case 28 peg or spindles 31, and place bobbin case 28 therewith.Between the bottom of the lower flange 34 of peg or spindle 31 and bobbin case 28, be provided with a conical spring 37 of propelling, this spring is used at least in part peg or spindle 31 being released bobbin case 28 after unclamping gripping mechanism 38, so as shown in Figure 3, the user can catch empty peg or spindle 31 and with its taking-up.Propel spring 37 and be made into conically, between bottom 36 and lower flange 34, occupy seldom position at this spring under the compressive state as shown in the figure like this.
Be supported in chucking bar 39 in the bobbin case 28 swingably as gripping mechanism 38 with one, this bar comprises two supporting surfaces 40,41 that are oppositely arranged with 90 degree.These supporting surfaces 40,41 are located at a shrinkage pool 42 that is arranged in axle 30 on the bearing 43 that is supporting movably on the direction of central longitudinal axis 29.The supporting surface 40 of bar 39 is positioned on this bearing 40, and as shown in Figure 2, if bar 39 rotates 90 degree relative to axis 29, the power that bearing is propelled opposing on spring 37 pushes away the bottom 36 of peg or spindle 31 towards bobbin case 28.When bar 39 is in the side of central longitudinal axis 29 upwardly extending the time basically, that is to say when peg or spindle 31 and unclamp by bobbin case 28 and can be when propelling spring 37 and boost from position shown in Figure 3, supporting surface 41 is against bearing 43, and can be taken off peg or spindle this moment by the user from bobbin case 28.
The another side relative with bar 39 of bearing 43 is positioned on the outer chucking spring 44, this spring is on the convex shoulder of a pre-tensioning helical compression spring and axle 30 the shrinkage pool 42 that is located at bobbin case 28, and at supporting surface 40, on two described positions of 41 bearing 43 fixedly is pressed in two supporting surfaces 40, on one of 41, bar 39 has the stable position of a relative bobbin case 28 on two described swing position.Realize by the joint face between the supporting surface 40 and 41 46 from the swing of position to another position, when supporting surface 46 slips over bearing 43, the power of resisting garter spring 44 is pressed into bearing 43 in the shrinkage pool 42.
In shrinkage pool 42, under bearing 43, also be provided with a braker of bobbin 47.This brake comprises the brake component 48 of a sphere, and this brake component is arranged in the hole 49 of axle 30 and is supported on the inner surface 50 of sleeve 32.In a following blind hole 51, in the shrinkage pool 42 of axle 30, be provided with a control piece 52, this control piece also is spherical and leans against on the zone of the brake component 48 that is arranged in hole 51.When in blind hole 51 when pressing down control piece 52, control piece is just along the direction compacting moving part 48 to the inner surface 50 of sleeve 32.To control piece 52 pressurization, this tripping spring leans against on the face of the bearing relative with it 43 and is located among the garter spring 44 by tripping spring 53.This spring is remained on the bearing 43 by pin 54.Opening 49 has bearing edge 55 at it one on the inner surface of the sleeve 32 of peg or spindle 31, this edge can prevent that brake component 48 outwards comes off after taking out peg or spindle 31.Can make this edge by upset.
Be in regard to control piece 52 and brake component 48 in the position of non-chucking of peg or spindle shown in Figure 3 31, promptly hold up bar 39 without tripping spring 53 to the position of its loading with in the folding position of bar 39, promptly on the chucking position as shown in Figure 2 to its loading, thereby make brake component 48 be pressed in position on the inner surface 50, from the swinging axle 56 of chucking bar 39 to supporting surface 40 apart from a greater than distance b from above-mentioned axle to supporting surface 41.Thus, tripping spring 53 is contractd by precompressed in the chucking position of Fig. 2 and is pressing control piece 52, and this spring is stretched out in position shown in Figure 3 at least basically, and peg or spindle 31 can be free extrapolated by propelling spring 37 like this.
Claims (5)
1. be used for the braker of bobbin of the suture peg or spindle of double-lock type stitch sewing machine, have:
A bobbin case (28) that is located in the shuttle (13), this bobbin case comprise the axle (30) parallel with central longitudinal axis 29 of a band shrinkage pool (42);
A suture peg or spindle (31), this peg or spindle comprise the sleeve (32) of a receiving axes (30);
One is supported on the chucking bar (39) that can swing round swinging axle (56) in the shrinkage pool (42) of axle (30) between chucking that is used for peg or spindle (31) and the position of unclamping, this bar comprises that two are located at the supporting surface (40 that is in 90 degree settings in the shrinkage pool (42), 41), be used to make supporting surface (40) that bar (39) is in the chucking position to the distance (a) of axis of oscillation (56) to make bar (39) be in the distance (b) of the supporting surface (41) of released position to axis of oscillation (56) greater than being used to;
A bearing (43) that can be in shrinkage pool moves along central axis (29) in (42), supporting surface (41) can support with this face on;
An one side is supported in the shrinkage pool (42) that is supported on axle (30) on the bearing (43) on the other hand, always bearing (43) is pressed to the garter spring (44) of the supporting surface (40,41) of chucking bar (39);
In hole (49) that is located at axle (30) and therefrom outstanding, radially the central axis (29) of bobbin case (28) is pressed in brake component (48) on the inner surface (50) of sleeve (32) relatively;
One what can be in shrinkage pool (42) on the direction of central axis (29) be provided with movably, and the control piece (52) of brake component (48) is set and is used for against brake component (48);
It is characterized in that,
One side is against control piece (52) and the tripping spring (53) that supports against bearing (43) on the other hand.
2. braker of bobbin as claimed in claim 1 is characterized in that, tripping spring (53) launches in the released position of chucking bar (39) at least basically.
3. braker of bobbin as claimed in claim 1 or 2, it is characterized in that, between bobbin case (28) and peg or spindle (31), be provided with one on the released position of chucking bar (39) with peg or spindle (31) at least in part from bobbin case (28) release propel spring (37).
4. as the described braker of bobbin of claim 1 to 3, it is characterized in that brake component (48) is spherical.
5. as claim 1 or 4 described braker of bobbin, it is characterized in that control piece (52) is spherical.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19510830.2 | 1995-03-24 | ||
| DE19510830A DE19510830C2 (en) | 1995-03-24 | 1995-03-24 | Bobbin brake for the hook thread bobbin of a lockstitch sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1140775A CN1140775A (en) | 1997-01-22 |
| CN1044927C true CN1044927C (en) | 1999-09-01 |
Family
ID=7757645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96104262A Expired - Fee Related CN1044927C (en) | 1995-03-24 | 1996-03-20 | Braker of bobbin of sewing thread bobbin for double lock stitching sewing machine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH08266771A (en) |
| KR (1) | KR960034514A (en) |
| CN (1) | CN1044927C (en) |
| DE (1) | DE19510830C2 (en) |
| IT (1) | IT1285289B1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19840953C1 (en) * | 1998-09-08 | 1999-10-28 | Duerkopp Adler Ag | Bobbin support in bobbin case for looper on double lockstitch sewing machine |
| DE502004007215D1 (en) | 2003-12-10 | 2008-07-03 | Bernina Int Ag | Locking device for a bobbin |
| DE102008014913B3 (en) * | 2008-03-19 | 2009-07-30 | Dürkopp Adler AG | Gripper for a double lockstitch sewing machine |
| DE102008030002A1 (en) | 2008-06-24 | 2009-12-31 | Dürkopp Adler AG | Gripper for a double lockstitch sewing machine |
| DE102008030001A1 (en) * | 2008-06-24 | 2009-12-31 | Dürkopp Adler AG | Gripper for a double lockstitch sewing machine |
| 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. |
| CN107059268B (en) * | 2017-06-16 | 2022-09-30 | 浙江乐江机械有限公司 | Automatic shuttle peg replacing device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE572732A (en) * | 1957-11-11 | |||
| US3437284A (en) * | 1967-02-13 | 1969-04-08 | Advance Silk Thread Corp | Smooth tension sewing machine bobbin case and bobbin |
| US3476068A (en) * | 1967-08-15 | 1969-11-04 | Miracle Hook Corp | Sewing hook and bobbin |
| US3940089A (en) * | 1974-05-31 | 1976-02-24 | Willcox & Gibbs, Inc. | Sewing machine thread control |
| 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 |
| CS262030B1 (en) * | 1987-06-15 | 1989-02-10 | Jaromir Dvoracek | Bobbin case of a rotating looper with vertical axis of rotation |
| CH673294A5 (en) * | 1987-11-11 | 1990-02-28 | Gegauf Fritz Ag |
-
1995
- 1995-03-24 DE DE19510830A patent/DE19510830C2/en not_active Expired - Fee Related
-
1996
- 1996-03-01 IT IT96TO000157A patent/IT1285289B1/en active IP Right Grant
- 1996-03-15 JP JP8059489A patent/JPH08266771A/en active Pending
- 1996-03-20 KR KR1019960007521A patent/KR960034514A/en not_active Application Discontinuation
- 1996-03-20 CN CN96104262A patent/CN1044927C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19510830C2 (en) | 2001-11-22 |
| ITTO960157A1 (en) | 1997-09-01 |
| IT1285289B1 (en) | 1998-06-03 |
| DE19510830A1 (en) | 1996-09-26 |
| JPH08266771A (en) | 1996-10-15 |
| CN1140775A (en) | 1997-01-22 |
| ITTO960157A0 (en) | 1996-03-01 |
| KR960034514A (en) | 1996-10-24 |
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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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |