CN108396467A - The method of two-wire lock stitch sewing machine and manufacture linear slit beginning upper thread - Google Patents
The method of two-wire lock stitch sewing machine and manufacture linear slit beginning upper thread Download PDFInfo
- Publication number
- CN108396467A CN108396467A CN201810122149.5A CN201810122149A CN108396467A CN 108396467 A CN108396467 A CN 108396467A CN 201810122149 A CN201810122149 A CN 201810122149A CN 108396467 A CN108396467 A CN 108396467A
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- China
- Prior art keywords
- upper thread
- section
- beginning
- arrests
- sewing machine
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
- D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
- D05B1/12—Lock-stitch seams
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
-
- 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
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2207/00—Use of special elements
- D05D2207/02—Pneumatic or hydraulic devices
- D05D2207/04—Suction or blowing devices
Abstract
The method for disclosing two-wire lock stitch sewing machine and manufacturing linear slit beginning upper thread.Two-wire lock stitch sewing machine has rack, upper thread power supply unit and baseline power supply unit.Sewing needle is provided to guide upper thread.Cyclic device is provided so that upper thread is around baseline cyclization.Upper thread beginning section, which arrests device, to be switched between neutral position, upper thread arrest position knead dough line clip position.In upper thread arrests position, upper thread beginning section is arrested device by upper thread and is arrested.In upper thread clip position, upper thread beginning section is arrested in upper thread beginning section and is securely held against rack between device and pairing cramping body.Beginning line knife is provided and starts section to cut off upper thread.The tension force of facial suture generated when supplying fabric pieces is utilized when long from the remaining upper thread of remaining upper thread beginning section cut-out using beginning line knife.Therefore, obtaining allows to manufacture the sewing machine that linear slit starts upper thread with ideal short nominal excessive linear slit length.
Description
Technical field
The present invention relates to two-wire lock stitch sewing machines.The invention further relates to waited for using the manufacture of such sewing machine
The method of the linear slit beginning upper thread for the linear slit sewed in fabric pieces, the linear slit beginning upper thread are nominal at most 10mm
Excessive line length.
Background technology
From document EP 1847641B1, from document DE 10234251C1, from document DE 102006019193A1, Yi Jicong
Sewing machine known to document DE 10123075C1.
Invention content
Start upper thread so manufacture the object of the present invention is to provide linear slit is allowed it is expected short nominal excessive line with described
Long sewing machine.Such sewing machine permission is accomplished that with maximum certainty, prevents the line after fabric pieces of sewing
Seam beginning line visibly projects over the fabric pieces edge in the viewable side of fabric pieces.
This purpose realized according to the present invention by two-wire lock stitch sewing machine, the two-wire lock stitch sewing machine
Including：Rack；Upper thread power supply unit；Baseline power supply unit；Stitching forms tool, that is, is used to guide the sewing needle of upper thread and makes upper thread
Around the cyclic device of baseline cyclization；The upper thread switched between the knead dough line clip position of position can be arrested in neutral position, upper thread
Beginning section arrests device, and in upper thread arrests position, the upper thread that upper thread beginning section is arrested device by upper thread beginning section is grabbed
It obtains device to arrest, and in upper thread clip position, upper thread starts section and arrests device and pairing cramping body in upper thread beginning section
Between be clamped to rack securely；With the beginning line knife for starting section for cutting off upper thread.
According to present invention discover that, can switch between neutral position, upper thread arrest position knead dough line clip position
Upper thread beginning section arrest device allow upper thread start section stitch online when forming process starts positioning in a limiting fashion and
Fastening, to allow follow-up cutting process.This allows upper thread beginning section to be so cut off with very short length, so that
Only short linear slit beginning upper thread maintains at the beginning of linear slit, this leads to visually attracting seam pattern.Starting line knife can
To start section for cutting off baseline simultaneously.In this case, also it is contemplated that providing baseline beginning section arrests device.
The baseline beginning section is arrested device and can be formed by bracing wire knife and the pairing being associated cramping body.Upper thread arrests device
Toggle path can extend on the side of linear slit, and the baseline of linear slit is supplied to linear slit from the side during sewing process.
Sewing process can be controlled so, so that the first stitching of linear slit is made to shorter than other stitchings, in other words the first stitching is matched
It is set to short stitching.It arrests position and clip position can be different location that upper thread beginning section arrests device.Upper thread starts
Section arrests the device that device can be and start line knife and separate.
It forms upper thread beginning section and arrests the upper thread of device and arrest the upper thread of device and arrest fork and be proved to be particularly suitable in face
Line arrests the fastening positioning of the beginning section of the upper thread in position.
The cutter of beginning line knife is proved to be particularly usable for forming short-term seam beginning upper thread, and cutter rigidly attaches
To the bobbin feeder for fabric pieces to be sewed.Start wire cutting device then with linear slit beginning it is very short at a distance from
Place's positioning.
Cutter is configured to the cut edge in the body portion of feed dog, and configured in this way embodiment is especially suitable
It is used to form short upper thread beginning.With the bobbin feeder of remainder on the contrary, the body portion including cut edge can be with
It is hardened.
It is configured to allow the end automatic cutting in linear slit in the bracing wire knife of the end of linear slit cut-out upper thread and baseline
Upper thread and baseline, and allow to obtain the very short remaining line length of not projection completely or only considerably less projection there.
Be configured to switching upper thread beginning section arrest device switching device be configured so that upper thread beginning section grab
At least part for obtaining the motor pattern of device is driven by the driver of bracing wire knife, to allow upper thread beginning section to arrest dress
It sets and is synchronously shifted during them the together part of driven motor pattern with bracing wire knife.Thus, for example line starts section
The end cutting line in linear slit simultaneously can be discharged from its respective clamp position.
Starting the cam controller for the motion switch that section arrests device for upper thread causes upper thread beginning section to arrest dress
The precise motion control set.Another cam controller is capable of providing to allow the motion switch of bracing wire knife.The two cams control
The cam face of device can surround common rotation axis rotation configured in this way.At least one cam controller energy
It is enough that there is the lifting cylinder being associated.The lifting cylinder can be configured to lifting magnet or cylinder.
It is configured to be disengaged and be arranged to by means of switching device upper thread beginning section is arrested device and is fastened on neutrality
Stop mechanism in position causes upper thread beginning section to arrest secure localization of the device in neutral position.Class can also be provided
As stop mechanism for bracing wire knife.
The suction unit for being configured to remove remaining upper thread length after the remaining upper thread length of cut-out provides cut-off remaining face
Line length safely removes.
The method for starting upper thread to be formed in the linear slit of the linear slit in fabric pieces is manufactured using sewing machine according to the present invention
The advantages of it is identical as the advantages of explanation above with reference to sewing machine according to the present invention, linear slit have at most 10mm nominal excess
Line length the described method comprises the following steps：Make the section of upper thread under the upside to fabric pieces of fabric pieces by means of sewing needle
Move through fabric pieces to side；Start section using cyclic device drawing upper thread, until entire upper thread beginning section is arranged in fabric
The lower section of the downside of part；Device is arrested with upper thread and arrests and be clamped upper thread beginning section, and sewing linear slit supplies fabric pieces simultaneously；With
And it is residual from the beginning section cut-out of remaining upper thread while using the tension force of facial suture generated when supplying fabric pieces using upper thread knife
Lap line length.This manufacturing method allows baseline beginning section clamped and cut-out, so all being obtained on both sides neat
Linear slit starts.
Description of the drawings
Exemplary embodiments of the present invention will be explained in more detail by means of attached drawing hereinafter, wherein
Fig. 1 shows that the schematic diagram of the front side of two-wire lock stitch sewing machine, view appear two-wire lock stitch sewing machine
Some interior details；
Fig. 2 shows the lines of the sewing machine before sewing process starts to guide, wire clamp holds the perspective view with wire cutting component,
It omits the support plate of the sewing machine other than needle plate and the other component for showing component is observed in blocking, upper thread starts section
It arrests device and bracing wire knife is showd that positioned at initial or neutral position；
Fig. 3 shows the driving for component shown in Figure 2 and another perspective view of installing component；
Fig. 4 is similar to Fig. 2 shows have been switched to upper thread in the upper thread beginning section pulled out by means of cyclic device to arrest
The upper thread beginning section of position arrests the view of the component after device is arrested and is clamped；
Fig. 5 the component in the position according to Fig. 4 is shown but from more acute angle from the point of view of the vertical view that goes；
The driving according to fig. 3 and installing component that Fig. 6 shows to look from different perspectives, wherein start section for upper thread
Arrest the cam surface engagement of the roller and the cam controller of the cam controller of the motion switch of device；
Fig. 7 is shown from arresting device and bracing wire knife for upper thread beginning section as viewed from similar position in figure 3
The instantaneous position of driving and switching part, wherein upper thread beginning section arrests a part for the motor pattern of device by bracing wire knife
Driver driving；
Fig. 8 shows the perspective view of some components in view according to fig. 2, wherein omitting needle plate and substantially from Fig. 2
Direction of observation VIII looks, and the bobbin feeder etc. illustrated including cutter, cutter is configured for cutting off
Upper thread starts the beginning line knife of the remaining upper thread length of section；
Fig. 9,10 from the direction of observation similar to Fig. 4 show the upper thread beginning section held by bracing wire cutter holder in cut-out and
Baseline starts the component during and after section, wherein two line beginning sections still arrest device and drawing by upper thread beginning section
Line cutter holder is held；
Figure 11 from the angle similar to Fig. 3 show when after sewing linear slit for upper thread end segments and baseline end
Section switches driving part when bracing wire knife between neutral position and cutting position；
Figure 12 shows the perspective view substantially as viewed from the direction of observation XII in Fig. 2, is clamped in release and cuts off
Line beginning section after upper thread beginning section arrest the instantaneous position of device and bracing wire knife, therefore line is allowed to start section
It is removed by means of suction unit；And
Figure 13 shows the schematic plan of the linear slit to sew according to the sewing machine of Fig. 1 to 12, the linear slit have compared with
The first short stitching is started with showing so to manufacture with the linear slit beginning upper thread and linear slit of the nominal excessive line length with restriction
Baseline.
Specific implementation mode
Two-wire lock stitch sewing machine 1 has rack 1a, and rack is with the substrate 2 for including holder 3 and angled arm 4, institute
Holder is stated on direction straight up to extend from substrate.The arm 4 terminates in head 5.In arm 4, arm axle 6 is mounted
At rotation.Crank driver 7 of 6 drive arrangement of the arm axle in head 5, crank driver 7 include line bar 8.Crank drives
Device 7 is operatively connectable to needle 9, and needle is mounted in head 5 such can axially shift.The needle is 9 at it
There is needle 10 at lower end.Needle 10 can be driven by crank driver 7 back and forth to move up and down along vertical axis 11.
Cartesian xyz coordinate system will be used to simplify the expression of position relationship below.Vertical axis 11 is along this coordinate
The directions z- of system extend.X- axis extend perpendicular to the plotting planes of Fig. 1 and enter the plotting planes of Fig. 1, and are parallel to seam
Thread machine 1 sewing direction extend.The left-hand side of the directions y- towards Fig. 1 extend.
Needle 10 guides upper thread 13, upper thread also referred to as to reach the standard grade and be supplied to needle via the upper thread power supply unit for being configured to spool 12
10 eyelet, thread tensioner and line bar 8.Upper thread 13 has free upper thread beginning section 13a.
Substrate 2 carries support plate 14, and for support plate using substrate is screw fastening to, wherein fabric pieces 15 are placed on support
On plate.A part for support plate 14 is configured to needle plate 16, and needle plate, which is equipped with, allows the recess portion that lower feed dog 17 passes through, the lower dog
Tooth device 17 is also referred to as bottom feeder.The feed dog 17 has the pin hole 18 for allowing needle 10 to pass through.Feed dog 17 is with known
Mode is operatively connectable to be arranged sliding and lifting gear unit below substrate 2.
Cyclic device 19 is arranged in the lower section of support plate 14, and cyclic device 19 has cyclic device ontology 20, and cyclic device ontology has
Cyclic device taper 21.Cup-shaped spool shell is installed in cyclic device ontology 20, to accommodate the cyclization for being configured to spool 22 or spool
Line power supply unit.Spool 22 is used as into loop wire power supply unit.It is also referred to as baseline at loop wire.
Cyclic device 19 and needle 10 represent stitching and form tool together.Needle 10 is for guiding upper thread.Cyclic device 19 is for making face
Line is around baseline cyclization.
Cyclic device 19 can surround the vertical cyclic device axis 23 extended in the z-direction and rotate.Cyclic device ontology 20 is rigid
It is connected to the axis 25 coaxially extended in cyclic device axis 23 to property.Axis 25 is installed into the bearing supports for being screwed to substrate 2
It is rotated in 26.Drive shaft 27 is installed in bearing supports 26, and drive shaft is connected to the tooth being arranged in 26 inside of bearing supports
Wheel unit.Gear unit has 1：2 transmission ratio, it means that be arranged in the cyclic device ontology 20 on axis 25 for drive shaft
Each of 27, which turn-take, makes two and turn-takes.Drive shaft 27 is operatively connectable to arm axle 6 via tape drive 28.
Bracing wire knife 29 as shown in Figure 2 is in the end of linear slit cut-out upper thread 13 and at loop wire, bracing wire knife to be for example
It was found from the similar configuration of document EP 1847641B1.Bracing wire knife 29 is rigidly connected to hollow shaft 29a.29 quilt of bracing wire knife
It is mounted to rotate in bearing supports 26.
In order to keep and supply fabric pieces 15, sewing machine 1 also has presser feet 30a and in order to supply fabric pieces and lower dog tooth
The upper feeder 31a that device 17 interacts.These components, i.e. presser feet 30a and upper feeder 31a are only schematically general in Fig. 1
It includes.
Sewing machine 1 for example arrests device 30 with upper thread shown in Figure 2 beginning section.
Upper thread beginning section arrests neutral position and such as Fig. 4 of the device such setting that can show for example, in fig. 2
Shown in switch between upper thread clip position.In upper thread clip position, upper thread beginning section 13a is clamped in upper thread and opens
Head sections are arrested between device 30 and pairing cramping body 31 (referring to Fig. 5).It is simultaneously for spool shell 22 to match cramping body 31
Spool shell retainer.
The upper thread that upper thread beginning section arrests device 30 arrests device and arrests fork by upper thread and 32 formed, and upper thread, which arrests fork, to be had
Two prong 32a, upper thread beginning section 13a are directed into upper thread between described two prongs and arrest in position.It is opened in upper thread
Between head sections arrest the neutral position knead dough line clip position of position 30, there is also upper threads to start section 13a by upper thread
It arrests the upper thread that device 32 is arrested and arrests position.
Upper thread beginning section arrests device 30 and is non-rotatably connected to axis 32b, the axis extend in hollow shaft 29a and
Summarized in fig. 2 by dotted line.Axis 32b is mounted to rotate in hollow shaft 29a.
Sewing machine 1 also has the beginning line knife 33 for being arranged to cut off upper thread beginning section 13a (referring to Fig. 8).It cuts at this
During cutting, upper thread starts section in the long 13aa of remaining upper thread (for example, with reference to Figure 12) and the excessive section 13ab of upper thread beginning
It is removed between (referring to Figure 13), the excessive section of upper thread beginning also referred to as starts upper thread from the linear slit of linear slit projection.Start line knife
33 have the cutter 34 for being rigidly secured to feed dog 17, and in other words cutter is the integrated component of feed dog.Cutter 34
It is formed by the bottom margin of the body portion 36 of the feeder 17 extended on sewing direction.
Beginning line knife 33 starts section for cutting off the baseline of baseline 36 simultaneously.For this baseline beginning section 36a
The baseline beginning section of (referring to Fig. 2) is arrested device and is formed by bracing wire knife 29, bracing wire knife be arranged in clip position against with
It is set to the pairing cramping body of baseline clamping elastomer 37 and baseline beginning section 36a is clamped, clip position is simultaneously that baseline is arrested
Position.This baseline clamping elastomer 37 is shown in further detail in fig. 12.
When cutting off baseline beginning section 36a using bracing wire knife 29, the remaining long 36aa of baseline (referring to Figure 12) is so cut
Break to maintain short baseline to start excessive section, the excessive section of baseline beginning is also referred to as linear slit and starts baseline.
When switching upper thread beginning section arrests device 30, upper thread beginning section arrests device and surrounds vertical-rotation-axis
38 rotations.Rotation axis 38 is arranged to the rotation axis of switching bracing wire knife 29 simultaneously.
In order to via upper thread arrest position switch between neutral position knead dough line clip position upper thread beginning section arrest
Device 30, provides switching device comprising upper thread is allowed to start 39 He of lifting magnet that section arrests the motion switch of device 30
Cam controller.
Fig. 6 shows to arrest the details of this switching device of device 30 for upper thread beginning section.For switching device packet
Include roller 40 cam controller be fastened to lifting magnet 39 lifting piston free end.In figure 6, roller 40 is illustrated at
Bonding station, in bonding station, roller engagement switching cam face 41 is to control the switching that upper thread beginning section arrests device 30
Movement.Switching cam face 41 is configured to the peripheral zone of the revolving body 42 of the driving of driven shaft 27 (referring to Figure 11).Work as lifting
Roller 40 is in bonding station when magnet 39 works.When lifting magnet 39 is closed, roller 40 retracts and does not engage switching cam
Surface 41.
In neutral position, upper thread beginning section arrests device 30 by means of the stop including retainer 43 and leaf spring 44
Fastening (referring to Fig. 3), retainer 43 are so connected to upper thread beginning section and arrest device 30 so that surrounding rotation axis
38 is non-rotatable, and leaf spring is engaged with retainer 43, and the leaf spring 44 is partly complementary to retainer 43.It can be cut by starting
Changing device discharges the engagement of retainer 43 shown in Fig. 3 and leaf spring 44, such as example relatively becomes apparent with Fig. 7.
In neutral position, bracing wire knife 29 fastens (referring to Fig. 3) also by way of another stop mechanism including retainer 45, retainer 45
Bracing wire knife 29 so is connected to so that non-rotatable around rotation axis 38, and retainer 45 engages fastening in neutral position
To the bolt 46 of shell.Retainer 45 is configured to partly be complementary to the stop fork of bolt 46.It is arrested for upper thread beginning section
The roller 40 of the switching device of device 30 is mounted in a part for retainer 43, and retainer is then non-rotatably connected to and is used for
Upper thread beginning section arrests the axis 29a of the cam controller of device 30 (referring to Fig. 2 and 6).
Another switching device allows bracing wire knife 29 to switch between property position and its cutting position wherein.This bracing wire knife
Switching device includes another lifting magnet 47a and is connected to the bar 48 of the bracing wire knife 29, and bar 48 is then carried without more in detail
The roller carefully shown, the roller can then be engaged with the switching cam face 49 of the motion switch for bracing wire knife (referring to figure
11).Bar 48 is non-rotatably connected to hollow shaft 29a (referring to Fig. 2).Switch the peripheral portion that cam face 49 is also revolving body 47
Point.It is respectively used to described two switching cam faces that upper thread beginning section arrests the motion switch of device 30 and bracing wire knife 29
41 and 49 rotate (referring to Figure 11) around common rotation axis 50.
When starting lifting magnet 47a so that bracing wire knife 29 is switched to cutting position, the bar 48 of switching device is with power transmission side
The extension 51 of the retainer 43 of the switching device of device 30 is arrested in formula carrying for upper thread beginning section.As long as this power transmission
Connection is present between bar 48 and extension 51, and upper thread starts the motor pattern of segment detection device 30 just by bracing wire knife 29
Driver drives, so upper thread beginning segment detection device and bracing wire knife all surround rotation axis in the same rotational direction
38 synchronously shift.
Suction unit 52 is arranged to remove the long 13aa of remaining upper thread and baseline after the remaining upper thread length of cut-out and baseline length
Long 36aa, suction unit include suction catheter, and the entrance opening 53 of suction catheter is shown in dotted line in fig. 12.Suction unit
52 have the only negative pressure source 54 of schematic overview in fig. 12.
In order to so manufacture the linear slit beginning upper thread (referring to Figure 13) for the linear slit 55 in fabric pieces that waits sewing to provide tool
There are the excessive section 13ab of upper thread beginning of the excessive nominal linear slit length A of at most 10mm, sewing machine operation as follows：
In the first step, the first stitching S of sewing linear slit 551, the first stitching S1Than other stitchings Si(i=1 is extremely
u；The quantity of stitching in u=linear slits) it is short.For this purpose, made by means of sewing needle 10 include upper thread beginning section 13a face
Move through fabric pieces 15 to downside of the front section of line 13 from the upside of fabric pieces to fabric pieces.This shows in Fig. 1,2 and 4
Go out.In this process, the cyclic device taper 21 of cyclic device 19 arrests the upper thread ring being formed in this front wires section and will
Needlework start section 13a and pull out, until entire upper thread beginning section 13a is arranged in the lower section of the downside of fabric pieces.This feelings
Condition is shown in FIG. 5.During this drawing process, upper thread beginning section arrests device 30 from neutral position shown in Figure 2
It is moved to shown in Figure 4 and 5 and arrests in position, this by means of switching cam face 41 by activating lifting magnet 39 and convex
It takes turns controller and implements.When pulled out upper thread start section 13a when, upper thread start section by upper thread arrest fork 32 arrest and
It is so clamped against pairing cramping body 31, so that when upper thread beginning section arrests device 30 and is in upper thread clip position
Thus upper thread beginning section is securely kept.It is arresting between position and clip position, upper thread arrests fork 32 in side clockwise
It is rotated again upward around rotation axis 38 a little.
Upper thread arrests that the toggle path of device 32, in other words neutral position, upper thread are arrested between the knead dough line clip position of position
Upper thread beginning section arrest the motion switch of device 30 and extend on the side of linear slit, baseline 36 is supplied to from the side
Linear slit 55.
During this sewing process, baseline start section 36a also due to by chucking power that bracing wire knife 29 provides and against
It is clamped in baseline clamping elastomer 37 and is therefore securely kept.
In the first short stitching S1Later, now with conventional larger stitch length sewing thread trace S2、…、Su.Meanwhile profit
Fabric pieces 15 are moved on sewing direction x with feed dog 17, so as to cause described two beginning line sections, in other words upper thread is opened
Head sections 13a and baseline beginning section 36a is tensioned between their respective clamp Points And lines seam beginning.As long as described two
A beginning line section is just conducted through cutting for feed dog by sufficient amount of tension, described two beginning line section 13a, 16a
Cutter 34, as long as and supply line tensioning it is abundant, described two beginning line sections are cut off by cutter 34.
Therefore implement the slave residue using beginning line knife 33 by using the tension force of facial suture generated when supplying fabric pieces 15
Upper thread 13 cuts off the long 13aa of remaining upper thread.
Although not requiring still can still use the pairing knife to interact with cutter 34.
Due to directly being cut at feed dog 17, two line beginning sections are cut off with being in close proximity to the beginning of linear slit 55
13a, 36a, so obtaining the very short excessive section of upper thread beginning of the nominal excessive linear slit length A at most 10mm
13ab (referring to Figure 13).Identical situation is also applied to be parallel to the excessive area of baseline beginning that the excessive section of upper thread beginning extends
Section.
Claims (10)
1. a kind of two-wire lock stitch sewing machine (1), including：
Rack (1a),
Upper thread power supply unit (12),
Baseline power supply unit (22),
Stitching forms tool comprising sewing needle (10) for guiding upper thread and for making upper thread (13) surround baseline (36)
The cyclic device (19) of cyclization,
Upper thread beginning section arrests device (30), can switch between following positions
-- neutral position,
-- upper thread arrests position, and in upper thread arrests position, upper thread beginning section (13a) arrests device by upper thread beginning section
(30) upper thread is arrested device (32) and is arrested, and
-- upper thread clip position, in upper thread clip position, upper thread beginning section (13a) arrests device in upper thread beginning section
(30) it is rigidly clamped to rack between pairing cramping body (31),
Beginning line knife (33) for cutting off upper thread beginning section (13a).
2. sewing machine according to claim 1, which is characterized in that the upper thread that upper thread beginning section arrests device (30) is arrested
Device (32) is configured to upper thread and arrests fork.
3. sewing machine according to claim 1 or 2, it is characterised in that include the dog tooth for fabric pieces (15) to be sewed
Device (17), beginning line knife (33) include the cutter (34) for being rigidly secured to feed dog (17).
4. sewing machine according to claim 3, which is characterized in that cutter (34) is configured to the matrix in feed dog (17)
The partly cut edge in (35).
5. according to any sewing machine in Claims 1-4, it is characterised in that cut the end including being configured in linear slit
The bracing wire knife (29) of section line (13) and baseline (36).
6. sewing machine according to claim 5, which is characterized in that be configured to switching upper thread beginning section and arrest device (30)
Switching device (39,41,47a, 48,49) be configured so that upper thread beginning section arrests the motor pattern of device (30)
At least part is driven by the driver (47a) of bracing wire knife (29).
7. according to any sewing machine in claim 1 to 6, it is characterised in that arrest dress including being used for upper thread beginning section
Set the cam controller (39,40,41) of the motion switch of (30).
8. according to any sewing machine in claim 1 to 7, which is characterized in that upper thread beginning section arrests device (30)
It is configured so that it is stopped unit and is fastened on neutral position, stop block includes being configured to be detached from by means of switching device
The stop mechanism (43,44) of engagement.
9. according to any sewing machine in claim 1 to 8, it is characterised in that including suction unit (52), be configured to
The remaining upper thread, which is removed, after the remaining upper thread length of cut-out grows (13aa).
10. a kind of manufacture using according to any sewing machine in claim 1 to 9 to be formed in the line in fabric pieces (15)
The method for stitching the linear slit beginning upper thread (13ab) of (55), nominal excessive line length (A) of the linear slit (55) at most 10mm, the side
Method includes the following steps：
It is moved through with making downside of the section (13a) of upper thread from the upside of fabric pieces to fabric pieces by means of sewing needle (10)
Fabric pieces (15),
Start section (13a) using cyclic device (19) drawing upper thread, until entire upper thread beginning section (13a) is arranged in fabric
The lower section of the downside of part,
Device (32), which is arrested, with upper thread arrests and be clamped upper thread beginning section (13a),
Sewing linear slit while supplying fabric pieces (15) at (55),
Started from remaining upper thread while using the tension force of facial suture generated when supplying fabric pieces (15) using upper thread knife (33)
The remaining upper thread length (13aa) of section (13a) cut-out.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017201929.8A DE102017201929A1 (en) | 2017-02-08 | 2017-02-08 | A lockstitch sewing machine and method for creating a seam-starting top thread with a low desired seam overhang |
| DE102017201929.8 | 2017-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108396467A true CN108396467A (en) | 2018-08-14 |
Family
ID=61024621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810122149.5A Pending CN108396467A (en) | 2017-02-08 | 2018-02-07 | The method of two-wire lock stitch sewing machine and manufacture linear slit beginning upper thread |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3360994A1 (en) |
| JP (1) | JP2018126505A (en) |
| KR (1) | KR20180092292A (en) |
| CN (1) | CN108396467A (en) |
| DE (1) | DE102017201929A1 (en) |
| TW (1) | TW201833404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030382A (en) * | 2020-09-27 | 2020-12-04 | 徐来军 | Industrial sewing device is used in processing of long cloth of efficient |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019205303A1 (en) * | 2019-04-12 | 2020-10-15 | Pfaff Industriesysteme Und Maschinen Gmbh | Thread finger assembly for a sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2312136A1 (en) * | 1973-03-12 | 1974-09-19 | Hans Dohm | Sewing machine cutter unit - with cutting units located below the sewing plate without damage to the sewn fabric |
| IT1087453B (en) * | 1977-09-22 | 1985-06-04 | Rockwell Rimoldi Spa | IMPROVED DEVICE FOR ORIENTING AND HOLDING THE CHAIN OF STITCHES AT THE BEGINNING OF SEWING |
| DE4110684C1 (en) * | 1991-04-03 | 1992-05-27 | Duerkopp Adler Ag, 4800 Bielefeld, De | |
| DE19722395C1 (en) * | 1997-05-28 | 1998-08-06 | Pfaff Ag G M | Double lock:stitch sewing machine thread cutter |
| DE10035819C1 (en) * | 2000-07-22 | 2001-11-15 | Duerkopp Adler Ag | Looper for a double backstitch sewing machine, has a projection at the looper closure to hold the lower thread in position after cutting, for correct stitching on resumption of sewing |
| DE10123075C1 (en) | 2001-05-11 | 2002-10-10 | Duerkopp Adler Ag | Thread cutter, at a double lockstitch sewing machine, has a thread drawing blade positioned very close to the fabric support surface, to leave a very short cut end when the thread is severed |
| DE10234251C1 (en) | 2002-07-27 | 2003-10-09 | Duerkopp Adler Ag | Sewing machine stitching mechanism relaxes the pressure on the fabric by the presser foot, when the upper thread is clamped between the needle and thread lever on the first seam stitch, for an extended duration with a thicker fabric |
| DE102006019193A1 (en) | 2006-04-21 | 2007-10-25 | Dürkopp Adler AG | Lockstitch sewing machine |
| DE202006009410U1 (en) | 2006-04-21 | 2007-08-30 | Dürkopp Adler AG | Thread-pulling knife for a sewing machine |
| JP2008068005A (en) * | 2006-09-15 | 2008-03-27 | Juki Corp | Sewing machine |
| DE102009004217A1 (en) * | 2009-01-09 | 2010-07-15 | Dürkopp Adler AG | Two-needle sewing machine |
| US8069799B2 (en) * | 2009-01-09 | 2011-12-06 | Zeng Hsing Industrial Co., Ltd. | Thread cutting device for a sewing machine |
| DE102012205049A1 (en) * | 2012-03-29 | 2013-10-02 | Dürkopp Adler AG | Thread cutting assembly for a lace hole sewing machine |
| DE102012213599A1 (en) * | 2012-08-01 | 2014-02-06 | Dürkopp Adler AG | Thread-pulling knife for a sewing machine, thread trimming assembly and sewing machine with such a thread-pulling knife |
-
2017
- 2017-02-08 DE DE102017201929.8A patent/DE102017201929A1/en not_active Withdrawn
-
2018
- 2018-01-24 EP EP18153113.8A patent/EP3360994A1/en not_active Withdrawn
- 2018-01-31 JP JP2018014707A patent/JP2018126505A/en active Pending
- 2018-02-07 TW TW107104355A patent/TW201833404A/en unknown
- 2018-02-07 CN CN201810122149.5A patent/CN108396467A/en active Pending
- 2018-02-08 KR KR1020180015595A patent/KR20180092292A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030382A (en) * | 2020-09-27 | 2020-12-04 | 徐来军 | Industrial sewing device is used in processing of long cloth of efficient |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017201929A1 (en) | 2018-08-09 |
| KR20180092292A (en) | 2018-08-17 |
| EP3360994A1 (en) | 2018-08-15 |
| TW201833404A (en) | 2018-09-16 |
| JP2018126505A (en) | 2018-08-16 |
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Application publication date: 20180814 |