WO2003060221A1 - Shuttle machine - Google Patents
Shuttle machine Download PDFInfo
- Publication number
- WO2003060221A1 WO2003060221A1 PCT/CH2003/000024 CH0300024W WO03060221A1 WO 2003060221 A1 WO2003060221 A1 WO 2003060221A1 CH 0300024 W CH0300024 W CH 0300024W WO 03060221 A1 WO03060221 A1 WO 03060221A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shuttle
- thread
- actuating member
- actuator
- leaf spring
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
- D05C11/18—Shuttles ; Shuttle holders; Shuttle driving arrangements
Definitions
- the present invention relates to a method and a scraper stitch machine working according to this method.
- a shuttle 10 is shown in FIGS. 1, 2a and 2b, as has been used in shuttle embroidery machines for decades.
- the boat 10 consists essentially of a steel housing 13, which can be closed by means of the cover 15 after inserting a coreless thread spool 11, called bobbin.
- the cover 15 is fastened to the housing 13 with the hinge 17.
- the bobbin thread 19, also called shuttle thread, is guided outwards through the ear 25 from the shuttle.
- a thread brake 18 serves to regulate the withdrawal tension of the shuttle thread 19.
- the thread brake essentially consists of a leaf spring 27 attached to the cover 15, which presses on the shuttle thread 19. As can be seen from FIG.
- the shuttle thread 19 runs from the bobbin 11 through the slots 21, 23 in the cover 15 between the leaf spring 27 and cover 15 and from there through the ear 25 to the outside.
- a bar 29 acting on the leaf spring 27 is used to adjust the spring tension and thus the take-up tension of the bobbin thread.
- the shuttle has the task of using one of the
- the invention provides a method for controlling the withdrawal tension of the shuttle thread of a shuttle embroidery machine, which is characterized in that the withdrawal voltage is controlled during operation by means of a controllable actuator according to the requirements of stitch formation.
- the pull-off voltage during operation can thus be increased when satin stitches are carried out.
- the quilting tension can be reduced for quilting embroidery.
- Another advantage is that it is no longer necessary to regulate the take-up tension of the shuttle thread before it is inserted into the machine. If you consider that an embroidery machine has several hundred to over a thousand boats, depending on its length, this has a considerable rationalization effect. Furthermore, this represents a step which enables the creation of an automatic bobmen filling machine. So far, the need to regulate the thread tension has placed practically insurmountable obstacles in the way of such automation.
- the actuator is expediently active during part of the downward movement of the boat. It is therefore not necessary to constantly exert a force on the shuttle thread brake. It is sufficient if, at a suitable moment, a force is exerted when the shuttle thread is pulled off in order to achieve the desired tightening of the stitch.
- the actuator may also be operative during part of the upward movement. As a result, a relatively high withdrawal tension for the shuttle thread can be achieved, which occurs when needle thread is withdrawn and / or tightening the needle thread prevents the shuttle thread from being pulled forward through the embroidery base.
- the invention also relates to a ship's stitching machine with shuttle and thread brakes assigned to the shuttle, which is characterized in that the respective shuttle is assigned an adjustable actuating member which controls the thread brake during operation.
- the actuating member can expediently be actuated directly or indirectly by an actuating member which can be controlled by the control unit and / or manually.
- the actuating member expediently has a pressure roller for acting on the thread brake. This makes it possible to largely avoid wear, even though the shuttle moves back and forth up to ten times per second when the embroidery machine is in operation.
- an expedient embodiment of the invention provides that the actuating member is a two-armed lever which is pivotably mounted on a stationary axis, that one arm of the lever is operatively connected to an actuating rod which can be displaced by the actuating member, and that the other arm of the lever is actuated the actuator can intervene in the shuttle to operate the thread brake.
- the actuating rod enables the simultaneous actuation of all actuators by a single actuator.
- the actuating member is formed by a leaf spring, for example a preloaded leaf spring.
- the actuating member it is also possible for the actuating member to be formed by a pivotable lever which is pretensioned by a spring, for example a helical spring.
- Figure 1 the structure of a conventional boat and the bobbin stored therein
- FIG. 2a the cover of the shuttle from FIG. 1 with the usual structure of the thread brake
- FIG. 2b a section through the cover along the line I-II of FIG. 2a,
- FIG. 3a the cover with the modified thread brake and the actuating element acting on the thread brake
- FIG. 3b shows a section along the line III-III of FIG. 3a
- FIG 4 the boat modified according to Figure 3a
- Figure 5 is a perspective view of the Stöcklis, in two
- Figure 6a a front view of the object of Figure 5 and
- Figure 6b a section in the direction of a shuttle from Figure 6a.
- FIG. 4 shows, the latch 29 shown in FIG. 1 can be omitted in the shuttle 10 ′ of a stitching machine operating according to the method according to the invention.
- Only a pressure member in the form of a leaf spring 27 serves as thread brake, which, as long as the shuttle is not in operation, only acts on the shuttle thread with very little force.
- the thread brake 27 is controlled by an actuating element 31 of the stitching machine during operation of the embroidery machine.
- the pulling force of the shuttle thread can be adjusted by changing the position of the actuator 31. The closer the actuator 31 is to the shuttle floor 15, the more the leaf spring 27 is pressed against the shuttle thread and the greater the pulling force, that is, the force necessary to pull shuttle thread out of the shuttle 10 '.
- the actuating member 31 is a two-armed lever which can be pivoted about the axis 37.
- One arm 39 of the lever is by means of the catch 36 in a wixk connection with an actuating rod 40 which can be displaced by an actuator 38 (FIG. 6a).
- Another arm 41 of the lever carries one at its end
- the actuator 38 is controlled by the control unit 45 of the shuttle embroidery machine. Manual fine control is also possible.
- the drawing also shows the Stöckli 33 and the driver bar 35 of the shuttle embroidery machine.
- the Stöckli 33 is known to have a shuttle track 45 for each shuttle 10 ', in which it is moved up and down by the drivers 47, 49 during operation of the stick machine.
- the cover 15 is arranged somewhat recessed in the boat. If the actuating member thus remains in the actuating position during the entire machine cycle, a recess 51 (FIG. 4) must therefore be provided on the shuttle 10 '. However, there is no need for such a recess if the actuating lever 31 comes out of the actuating position cyclically with each machine cycle, for example by means of a cam disk is moved so far that the pressure roller 43 does not abut the edge of the boat.
- the leaf spring 27 has a curvature. However, it is also possible to dispense with this curvature. In this case, however, it must be ensured that the actuating member acts on the leaf spring 27 with spring force.
- the actuating member could be formed by a prestressed leaf spring 31 '(FIG. 7). However, it would also be possible, as shown in FIG. 8, to pretension an actuating element 31 "which can be pivoted about an axis 37 ', for example with a helical spring 53.
- the withdrawal tension of the shuttle thread 19 is controlled according to the requirements of stitch formation by a controllable actuator 31. It is controlled by the
- the trigger voltage can also be set manually.
- An actuator can be actuated by the control unit of the embroidery machine, which actuates an actuating rod 40 which is in operative connection with all actuating elements 31. The closer the pressure roller 43 of the actuator 31 is brought to the boat bottom 15, the stronger the leaf spring 27 becomes against the The shuttle thread is pressed and the greater the pull-off force, that is to say the force which is necessary to pull the shuttle thread out of the shuttle 10 '.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003201420A AU2003201420A1 (en) | 2002-01-18 | 2003-01-16 | Shuttle machine |
EP03700110A EP1466046A1 (en) | 2002-01-18 | 2003-01-16 | Shuttle machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH792002 | 2002-01-18 | ||
CH79/02 | 2002-01-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003060221A1 true WO2003060221A1 (en) | 2003-07-24 |
Family
ID=4332386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2003/000024 WO2003060221A1 (en) | 2002-01-18 | 2003-01-16 | Shuttle machine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1466046A1 (en) |
AU (1) | AU2003201420A1 (en) |
WO (1) | WO2003060221A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE279663C (en) * | ||||
DE233055C (en) * | ||||
DE389047C (en) * | 1922-09-28 | 1924-10-18 | Vogtlaendische Maschinenfabrik | Shuttle embroidery machine with several needles |
-
2003
- 2003-01-16 AU AU2003201420A patent/AU2003201420A1/en not_active Abandoned
- 2003-01-16 EP EP03700110A patent/EP1466046A1/en not_active Withdrawn
- 2003-01-16 WO PCT/CH2003/000024 patent/WO2003060221A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE279663C (en) * | ||||
DE233055C (en) * | ||||
DE389047C (en) * | 1922-09-28 | 1924-10-18 | Vogtlaendische Maschinenfabrik | Shuttle embroidery machine with several needles |
Also Published As
Publication number | Publication date |
---|---|
EP1466046A1 (en) | 2004-10-13 |
AU2003201420A1 (en) | 2003-07-30 |
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