CN108796855B - Assembly and sewing machine for producing a seam start top thread with a target seam projection - Google Patents
Assembly and sewing machine for producing a seam start top thread with a target seam projection Download PDFInfo
- Publication number
- CN108796855B CN108796855B CN201810420418.6A CN201810420418A CN108796855B CN 108796855 B CN108796855 B CN 108796855B CN 201810420418 A CN201810420418 A CN 201810420418A CN 108796855 B CN108796855 B CN 108796855B
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- thread
- blade
- seam
- top thread
- assembly
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- 238000009958 sewing Methods 0.000 title claims abstract description 44
- 238000005520 cutting process Methods 0.000 claims abstract description 46
- 238000006073 displacement reaction Methods 0.000 claims abstract description 26
- 230000000977 initiatory effect Effects 0.000 claims abstract description 15
- 238000003032 molecular docking Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
Abstract
An assembly (40) and sewing machine for producing a seam initiation top line having a target seam projection of at most 10mm are disclosed. The assembly (40) has a top thread catcher (41) for picking up a seam start top thread. The top thread catcher (41) has a top thread blade (42) with a top thread take-up portion. The top thread catcher (41) also has a docking blade (44) and a top thread clamp (45) and a displacement drive (48) for the top thread take-up section. The top thread take-up portion is movable between a top thread take-up position, a top thread clamping position and a top thread cutting position by means of a displacement drive (48). The result is a reproducible desired short target seam projection and safety attachment.
Description
The content of german patent application DE 102017207627.5 is incorporated herein by reference.
Technical Field
The invention relates to an assembly for producing a seam initiation top line having a target seam projection of at most 10 mm. The invention also relates to a sewing machine with such an assembly.
Background
Sewing machines are known from EP 1847641B 1, DE 10234251C 1, DE 102006019193 a1 and DE 10123075C 1. DE 102015223194B 3 describes a method for producing a seam starting top line with short target seam projections and an assembly for carrying out the method. DE 343440874 a1 discloses a thread cutting device for a sewing machine. US 6062152 a discloses an automatic thread cutting device for an embroidery machine. DE 3812092C 2 discloses a button sewing machine with a thread separating and clamping device. DE 10063003B 4 describes a thread cutter for sewing machines. DE 19719847 a1 describes a thread cutting device for a sewing machine. DE 102006059192 a1 discloses a thread separating device for a sewing machine. DE 29811472U 1 discloses a thread cutting device for a sewing machine for chain sewing tasks. DE 102007056132 a1 discloses a sewing machine with a thread cutting mechanism. DE 10055258C 1 discloses a thread cutter for use in a sewing machine with a rotary gripper.
Disclosure of Invention
It is an object of the invention to further develop an assembly of the above-mentioned type such that a reproducible desired short target seam projection is achieved. At the same time, secure attachment at the start of seam production is ensured.
This object is solved according to the invention by an assembly for producing a seam initiation top thread with a target seam projection of at most 10mm, comprising a top thread catcher for picking up a seam initiation top thread, wherein the top thread catcher has a top thread blade with a top thread take-up portion, a docking blade, a top thread clamp, a displacement drive for the top thread take-up portion, wherein the top thread take-up portion is displaceable with the displacement drive between a top thread take-up position for taking up a seam initiation top thread, a top thread clamping position of the seam initiation top thread between the top thread blade and the top thread clamp, and a top thread cutting position for cutting the seam initiation top thread between the top thread blade and the docking blade.
According to the present invention, it has been found that the top thread or upper thread lifting portion of the top thread blade can be used both for gripping the seam initiation top thread and also for cutting the seam initiation top thread so as to produce a defined short initiation top thread of the seam. A compact assembly is therefore possible which ensures clamping on the one hand and the cutting of the starting top line on the other hand. The butt-jointed blades can simultaneously form a roof clamp. Alternatively, the tip wire clamp may be designed as a separate component from the butt blade. The docking blade may be arranged to be secured to the frame. Alternatively, the docking blade may be moved relative to the frame of the sewing machine during cutting. The top thread take-up position, the top thread clamping position and the top thread cutting position are positions of the top thread take-up portion which are different from each other. The top thread clamping position may be a position in which the top thread take-up portion is located between the top thread take-up position and the top thread cutting position.
It is cost-effective to design the shift driver as exactly one driver that shifts the top thread take-up portion between the three positions.
The shift drive is designed to be precise as a linear drive, in which a linear guide guides the displacement movement of the thread take-up section between three positions.
The displacement drive can be designed as a lifting cylinder, in particular as a pneumatic lifting cylinder. Alternatively, the displacement drive can be designed as a stepping motor. The stepping motor may be controlled by a corresponding controller in such a manner that three positions of the thread take-up portion are equivalent to corresponding stepping positions of the stepping motor. With this design of the stepping motor, the stop for the prescribed position can be omitted.
An adjustable clamping position stop for specifying the relative position of the tip wire blade and the tip wire clamp in the tip wire clamping position simplifies production of the assembly.
A clamp position stop with a self-dampening threaded pin is cost-effective to produce. Self-damping can be achieved by screwing a threaded pin into a plastic body fixed to the frame.
An adjustable cutting position stop for specifying the relative position of the top line blade and the butt blade in the top line cutting position simplifies production of the assembly.
The stop body of the cutting position stop can be displaced transversely to the cutting movement direction of the top line blade to specify the relative position of the top line blade and the counter blade, enabling a precise adjustment of the cutting position stop, wherein the forces absorbed by the cutting position stop do not act in the displacement direction of the stop body, which can lead to an undesired sliding of the stop.
The suction device for sucking the severed portions of the top line avoids undefined deposits of the portions of the top line. This avoids residues of the cutting thread accumulating in an undesired manner in the region of the sewing machine.
The advantages of the sewing machine with the assembly according to the invention, which has a driven needle bar with a sewing needle carried by it for guiding the top thread, and which also has a gripper for picking up the top thread forming the stitch, are equivalent to the advantages already described above with reference to the assembly according to the invention.
Drawings
Embodiments of the present invention will be explained in more detail below with reference to the accompanying drawings. The figures show:
FIG. 1 is a front view of a double-side backstitch sewing machine;
FIG. 2 is a perspective schematic view of a stitch forming area of the sewing machine;
FIG. 3 is a perspective view of a platen of the sewing machine with some components removed so that the components for creating a seam initiation top line with a prescribed target seam projection are visible;
FIG. 4 is a side view in partial cross-section of the assembly for creating a seam initiation top line with the top or upper thread blade having a top thread take-up portion illustrated in a fully deployed top thread take-up position;
fig. 5 is the assembly according to fig. 4 seen from above;
fig. 6 is a perspective view of the assembly according to fig. 4, seen obliquely from above;
FIG. 7 is the assembly according to FIG. 4 with the thread take-up section in a retracted thread gripping position;
fig. 8 is the assembly seen from the viewing direction VIII in fig. 7;
FIG. 9 is a view similar to that of FIG. 5, with the assembly in the position of FIG. 7;
FIG. 10 is a view similar to that of FIG. 6, with the assembly in the position of FIG. 7;
FIG. 11 is the assembly from the position shown in FIG. 7, viewed in oblique perspective from below;
FIG. 12 is a view similar to that of FIG. 4, showing the assembly in a top wire cutting position with the top wire take-up portion more retracted relative to the top wire clamping position;
FIG. 13 is a partial cross-sectional view according to line XIII-XIII in FIG. 12;
FIG. 14 is a view similar to that of FIG. 5, with the assembly in the position of FIG. 12;
FIG. 15 is a view similar to that of FIG. 6, with the assembly in the position of FIG. 12; and
FIG. 16 is a schematic top view of a seam sewn with the sewing machine of FIG. 1 to show a top starting line produced by a seam having a prescribed target seam projection.
Detailed Description
A sewing machine 1, particularly designed as a double-sided backstitch sewing machine, has a table 2 with a support 3 extending upwardly therefrom, and an angled arm 4. The angled arm ends with a head 5. An arm shaft 6 is rotatably mounted in the arm 4. The arm shaft drives a crank mechanism 7 through a wire rod 8 in the head 5. The crank mechanism 7 is connected to be driven by a needle bar 9 arranged axially movably in the head 5. The shank has a needle 10 at its lower end. The needle 10 can be moved up and down on a vertical axis 11 by means of a crank mechanism 7.
To simplify the illustration of the positional relationship, we will use the cartesian xyz coordinate system in the following. The vertical axis 11 extends in the z-direction of the coordinate system. The direction x extends perpendicular to the plane of drawing of fig. 1 into the plane of drawing of fig. 1 and parallel to the sewing direction of the sewing machine 1. The direction y extends to the left in fig. 1.
The needle 10 brings the needle thread 13 supplied from the bobbin 12 through the thread tension device and the thread shaft 8 into the eye of the needle. The needle thread 13 is also described as a top thread or upper thread. The needle thread 13 has a free top thread start portion 13 a.
The table 2 is provided with a contact plate 14 mounted with screws, on which a sewing workpiece 15 is located. The contact plate 14 is provided with a recess for the lower material pusher 17 to pass through. The lower material pusher has a needle aperture 18 through which the needle 10 passes. The material pusher 17 is connected to a pusher lifting gear arranged below the bedplate 2 and is driven in a known manner.
Below the contact plate 14 is a gripper 19, which has a gripper body 20 with a gripper tip 21. A pot shaped spool housing 22 is mounted in the gripper body 20 for receiving a clamping line storage in the form of a line spool 22 a. The upper edge profile of the bobbin housing 22 on the one hand and the bobbin 22a on the other hand is indicated in the schematic view of fig. 2 by dashed lines. This clamping line is also called the bobbin thread.
The gripper 19 is rotatable about a vertical gripper axis 23 extending in the z-direction. The sewing operation rotation direction 24 of the gripper body 20 extends in a clockwise direction about the gripper axis 23 in fig. 3. The gripper body 20 is permanently connected with a shaft 25, the shaft 25 extending coaxially with the gripper axis 23. The shaft 25 is rotatably mounted in a bearing block 26 which is screwed to the bedplate 2. A drive shaft 27 connected to a gear transmission arranged inside the bearing housing 26 is mounted in the bearing housing. The gear transmission device comprises 1: 2 so that one rotation of the drive shaft 27 rotates the gripper body 20 on the shaft 25 twice. The drive shaft 27 is connected to be driven by the arm shaft 6 through a belt transmission 28.
A thread pulling blade 29 (see fig. 3) is used for cutting the needle thread 13 and the gripper thread at the end of the seam and is known, for example, from EP 1847641B 1.
The sewing machine 1 also has a presser foot 30 for holding and conveying the sewing workpiece 15 and an upper conveyor 31 for conveying the sewing workpiece in cooperation with the lower material pusher 17.
The schematic view 2 additionally shows the path of the top thread 13 from the bobbin 12 to the top thread take-up portion 13 a. Starting from the spool 12, the top thread 13 is guided to the needle 10 via the thread tensioning device 32 and the thread lever 8 and the top thread guide clip 33.
The top line guide clamp 33 has a tension disc 34 mounted on a guide bar 35. The tensioning disc 34 is pulled against the housing mounting seat 37 of the top wire guide clamp 33 by means of a pressure spring 36 for clamping the top wire 13. An electromagnet 38, shown schematically in fig. 2, is mounted on the support 37 and can be controlled by a central controller 39 of the sewing machine 1 in a manner not shown in detail here.
An embodiment of a sewing machine assembly 40 for producing a seam start thread having a target seam projection of at most 10mm is described below with reference to fig. 3 to 15.
With respect to the xz-horizontal plane on which the movement axis 11 of the sewing needle 10 lies, the assembly 40 is arranged on the opposite side of this xz-horizontal plane to the gripper 19 (see fig. 1 and 3).
The assembly 40 has a top thread catcher 41 for picking up a seam start top thread at the seam start to be sewn with the needle thread 13. The top thread catcher 41 has a top thread blade 42 (see e.g. fig. 5) with a top thread take-up portion 43 designed as a through-going channel. The top thread catcher 41 also has a butt blade 44 that cooperates with the top thread blade 42 to cut the needle thread 13. The docking blade 44 is permanently mounted on the frame of the sewing machine 1.
The apex line catcher 41 also has an apex line clip 45. The roof clamp 45 is designed as a U-shaped clamping spring. The contact pressure of the clamp spring 45 against the tip line blade 42 can be adjusted by a clamp spring adjustment screw 46. The blade pressure, i.e. the contact pressure of the butt blade 44 against the top line blade 42, can be adjusted by means of a blade adjustment screw 47.
The top thread blade 42 together with the top thread take-up portion 43 can be displaced by a displacement driver 48. The displacement drive 48 is designed as a pneumatic lifting cylinder. The displacement movement of the thread take-up section 43 extends in the direction y and thus linearly. The thread take-up section 43 can be displaced by means of a displacement drive 48 between three positions, namely between:
a top thread take-up position for taking up the seam start top thread,
a top line clamping position for clamping the seam start top line between the top line blade 42 and the top line clamp 45, an
A top line cutting position for cutting a seam initiation top line between the top line blade 42 and the butt blade 44.
The top thread take-up position is shown in fig. 4 to 6. The top line clamping position is shown in fig. 7-11. The top line cutting position is shown in fig. 12-15.
The top thread take-up position, the top thread clamping position and the top thread cutting position are positions of the top thread take-up portion 43 different from each other. These three positions can be defined by the displacement drive 48, i.e. only one drive is used.
The linear guide guides the displacement movement of the thread take-up portion 43 between the three positions. The linear guide comprises a guide pin 49, which guide pin 49 extends substantially in the direction z and is mounted on a connecting piston 50, which connecting piston 50 is connected with high tensile strength to a piston rod 51 of the lifting cylinder 48. The guide pin 49 cooperates with an elongated hole 52 in a mounting plate 53 of the assembly 40 for guiding the displacement movement of the thread take-up portion 43 (see e.g. fig. 4 and 5). The top line blade 42 is mounted to the guide pin 49 at the end opposite the mounting plate 53.
In the thread take-up position, the thread take-up blade 42 extends in the negative y-direction so far as compared to the butt blade 44 that the thread take-up portion 43 projects completely beyond the thread take-up blade 42 and the thread clamp 45 and is freely accessible for the needle 10 to pass through.
An adjustable clamping position stop is used to specify the relative position of the top wire blade 42 and the top wire clamp 45 in the top wire clamping position. The clamping position stop comprises a threaded pin 54 screwed into a plastic body 55. This achieves self-restraint of the threaded pin 54. In the stop position of the clamping position stop, i.e. in the top thread clamping position according to fig. 7 to 11, the free end of the threaded pin 54 strikes against the guide pin 49 and thus defines a movement of the top thread blade 42 in the positive y-direction, i.e. for example to the left in fig. 7, starting from the top thread take-up position. In order to adjust the exact position of the thread take-up portion 43 in the thread clamping position, the threaded pin 54 is correspondingly rotated relative to the plastic body 55. For this purpose, the threaded pin 54 is accessible from the outside through a through-hole 56 (see fig. 8) in a driver support plate 57.
The clamping position stop is displaceable between a stop position, shown in particular in fig. 7, and an inactive intermediate position. This intermediate position is shown, for example, in fig. 12. A clamping stop drive 58, which is also configured as a pneumatic lift cylinder, is used to displace the threaded pin 54 of the clamping position stop. The plastic body 55 is connected to the clamping stop member driver 58 by a piston rod 59 of the clamping stop member driver.
In the stop position of the clamping position stop, the plastic body 55 supports itself on the drive support plate 57 against the pretension exerted by the guide pin 49 on the threaded pin 54 (see fig. 7).
A clamping stop driver 58 is also mounted on the driver support plate 57. The driver support plate 57 is curved in an L-shape, with the thread take-up portion displacing driver 48 mounted on a first leg of this L-shape and the clamping stopper driver 58 mounted on a second leg. The displacement movement via the clamping stop driver 58 is realized substantially perpendicular to the displacement movement via the displacement driver 48.
In the top wire clamping position, the top wire is clamped between the top wire clamp 45 and the top wire blade 42. This clamped position is such that the cutting edge of the top line blade 42 has not yet co-operated with the butt blade to sever the top line 13.
The assembly 40 also has an adjustable cut position stop for specifying the relative position of the top line blade 42 and the butt blade 44 in the top line cut position. The cutting position stopper has a stopper body 60 formed of a stopper plate (see fig. 12 and 13). The stop plate in turn cooperates with the guide pin 49 of the assembly 40 in the cutting stop position of the cutting position stop. The contact between the guide pin 49 and the stop plate 60 is realized in the region of the inclined wall portion 61 of the stop plate 60, i.e. in the region of the edge portion, which is at an angle to the x-axis or to the sewing direction in the top view according to fig. 13.
The relative position of the stop plate 60 and the mounting plate 53 can be defined by a mounting connection with an adjusting screw 62, which adjusting screw 62 extends through an elongated hole 63 extending in the direction x in the stop plate 60 (see fig. 13) for adjusting the cutting position stop. For adjusting the cutting position stop, the stop plate 60 is displaced in the direction x after a corresponding loosening of the adjusting screw 62, so that the contact area between the guide pin 49 and the inclined wall portion 61 drifts in the direction y in the cutting stop position.
The stop body 60 is displaceable transversely to the direction of cutting movement of the top line blade 42 (i.e., transversely to direction y) to specify the relative position of the top line blade 42 and the docking blade 44.
In the stop position of the cutting position stop (see fig. 13), the stop plate 60 supports itself on the drive support plate 57 against the pretension via the guide pins 49.
The cutting position stop is actuated when the clamping position stop is in the intermediate position.
The assembly 40 also has a suction device 64 for sucking a portion of the top wire 13 cut by the top wire blade 42. The suction device 64 has a suction tube 65 with a suction end that opens below a cutting area 65a between the top line blade 42 and the butt blade 44 (see fig. 12). The opposite end 66 of the suction tube 65 is connected to a source of underpressure, not shown here, of the suction device 64.
In order to produce a seam starting top thread having a target seam projection of at most 10mm, a part of the needle thread 13 is first conveyed from the top of the sewing workpiece to the bottom side of the sewing workpiece 15 at a top thread take-up position of the top thread take-up portion 43, wherein the needle 10 passes through the opening of the top thread take-up portion 43. Then, the top thread starting portion 13a is pulled out by the gripper 19 until the entire top thread starting portion 13a is located below the lower side of the sewing work piece 15. After the short first stitch, the thread take-up portion 43 is then brought from the thread take-up position into the retracted thread clamping position by activating the displacement drive 48 when the thread lever 8 is located in the top dead center region. With the thread start 13a clamped, a shorter stitch is formed, wherein the sewing needle 10 then no longer penetrates the top thread take-up portion 43. After the second short stitch is completed, the clamping stop driver 58 is activated and the clamping position stop is transferred from the clamping position to the intermediate position, so that the top thread take-up section 43 and thus the top thread blade 42 are now transferred into the further retracted top thread cutting position. Here, the blade edge of the top thread take-up portion 43 cooperates with the butting blade 44 to cut the top thread starting portion 13 a. The cut portion of the top line start portion 13a is then sucked away by the suction device 64.
After the two initial short stitches at the beginning of the seam, the sewing of the seam is continued with a normal stitch length. The specification of the stitch length is provided by the controller 39.
The rest of the seam can now be formed by joining the top thread 13 and a bottom thread not shown here in detail in the manner of a double-backstitch seam. Then, a thread cutting process of the top thread 13 and the bottom thread is performed at the end of the seam by using the thread pulling blade 29.
The top view according to fig. 16 shows the seam 67 formed by the sewing assembly 40 at the seam start. The stitching direction extends in the direction x to the left in fig. 6. Due to the portion of the top line between the top line blade 42 and the butt blade 44, the top line start portion 13a where the seam 67 starts is so short that a maximum seam projection a of 10mm is produced.
Also shown in figure 16 are the first two starting stitches S1、S2With subsequent stitches S3，...SuIs shortened in comparison.
As an alternative to the above-described design of the displacement drive 48 with a stop, the displacement drive can also be designed as a stepping motor, so that the various positions of the thread take-up section 43 are then identical to the individual stepping positions of the stepping motor. These different step positions may be specified by the controller 39.
Claims (7)
1. An assembly (40) for producing a seam initiation top line having a target seam projection (A) of at most 10mm,
-having a top thread catcher (41) for picking up a seam start top thread, wherein the top thread catcher (41) has:
-a thread take-up blade (42) with a thread take-up portion (43),
-a docking blade (44),
-a top line clamp (45),
a displacement drive (48) for the thread take-up section (43),
-wherein the thread take-up section (43) is displaceable with a displacement drive (48) between:
-a top thread take-up position for taking up a seam start top thread,
-a thread start thread take-up position between the thread take-up blade (42) and the thread take-up clamp (45), and
-a top line cutting position for cutting a seam initiation top line between the top line blade (42) and the butt blade (44),
-wherein the assembly (40) is implemented such that the top thread take-up position, the top thread clamping position and the top thread cutting position are mutually different positions of the top thread take-up portion (43),
-wherein the assembly is designed such that the top thread clamping position is maintained during at least one stitch of a seam production, and
-wherein the assembly (40) has an adjustable cutting position stop (60, 49) for specifying the relative position of the top line blade (42) and the docking blade (44) in the top line cutting position, the cutting position stop (60, 49) comprising a stop body (60) and a guide pin (49), the top line blade (42) being mounted onto the guide pin (49), the guide pin (49) and the stop body (60) being in contact in the region of an inclined wall portion (61) of the stop body (60) such that the stop body (60) is displaceable transversely to the cutting movement direction of the top line blade (42) to define the relative position of the top line blade (42) and the docking blade (44).
2. Assembly according to claim 1, characterized in that the displacement drive (48) is designed as exactly one drive which displaces the thread take-up section (43) between the three positions.
3. Assembly according to claim 1, characterized in that the displacement drive (48) is designed as a linear drive, wherein a linear guide (49, 52) guides the displacement movement of the thread take-up section (43) between the three positions.
4. The assembly of claim 1, characterized by adjustable clamping position stops (54, 49) for specifying the relative position of the apex blade (42) and the apex clamp (45) in the apex clamping position.
5. Assembly according to claim 4, characterized in that the clamping position stop (54, 49) has a self-damping threaded pin (54).
6. An assembly according to claim 1, characterized by suction means (64) for sucking the severed tip line portion.
7. Sewing machine with an assembly (40) according to claim 1,
-having a driven needle bar (9) with a sewing needle (10) carried thereby for guiding a top thread (13), and
-having a gripper (19) for picking up the top thread (13) to form a stitch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017207627.5A DE102017207627A1 (en) | 2017-05-05 | 2017-05-05 | Assembly for creating a seam beginning upper thread with a desired seam projection |
| DE102017207627.5 | 2017-05-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108796855A CN108796855A (en) | 2018-11-13 |
| CN108796855B true CN108796855B (en) | 2022-05-10 |
Family
ID=62025709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810420418.6A Active CN108796855B (en) | 2017-05-05 | 2018-05-04 | Assembly and sewing machine for producing a seam start top thread with a target seam projection |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3399088B1 (en) |
| KR (1) | KR102496909B1 (en) |
| CN (1) | CN108796855B (en) |
| DE (1) | DE102017207627A1 (en) |
| TW (1) | TWI788349B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202019102567U1 (en) | 2019-05-08 | 2020-08-11 | Dürkopp Adler AG | Sewing machine and counter-knife assembly for one machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260600A (en) * | 2007-03-06 | 2008-09-10 | 兄弟工业株式会社 | Sewing machine |
| CN101424015A (en) * | 2007-10-29 | 2009-05-06 | 大和缝纫机制造株式会社 | Wire-cutting device for sewing machine |
| CN101775714A (en) * | 2009-01-09 | 2010-07-14 | 杜尔克普-阿德勒股份公司 | Thread cutting device |
| DE102015223194B3 (en) * | 2015-11-24 | 2017-02-23 | Dürkopp Adler AG | A method for creating a seam beginning upper thread with short target seam projection and assembly for performing the method |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630559A (en) * | 1984-11-08 | 1986-12-23 | Tokyo Juki Industrial Co., Ltd. | Thread cutting mechanism in lock stitch sewing machine |
| DE3812092A1 (en) * | 1988-04-12 | 1989-10-26 | Duerkoppwerke | BUTTONHOLE SEWING MACHINE WITH A THREAD SEPARATOR AND CLAMPING DEVICE |
| DE19531727C2 (en) * | 1994-10-13 | 1999-09-30 | Duerkopp Adler Ag | Thread cutting device for a sewing machine |
| JP3667440B2 (en) * | 1996-05-11 | 2005-07-06 | ジューキ株式会社 | Sewing machine thread trimmer |
| US5870962A (en) * | 1997-11-12 | 1999-02-16 | Ku; Fei-Lung | Thread cutting device for a sewing machine of chain sewing |
| US6062152A (en) * | 1998-05-12 | 2000-05-16 | Capital Automation Co., Ltd. | Automatic thread cutting device for an embroidery machine |
| JP4686025B2 (en) * | 1999-12-16 | 2011-05-18 | Ｊｕｋｉ株式会社 | Sewing machine thread trimmer |
| DE10055258C1 (en) * | 2000-11-08 | 2002-03-07 | Viking Sewing Machines Ab Husk | Thread cut-off unit for sewing machine includes cam rotating rigidly with shuttle, and arrestors holding cam follower out of engagement when not rotating |
| 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 |
| DE10136543C1 (en) * | 2001-07-26 | 2002-07-18 | Duerkopp Adler Ag | Buttonhole sewing machine has a clamp/cutter unit for the upper thread, mounted at a body containing cutter swing and closing drives, in a simple and low-cost structure |
| US7143705B2 (en) * | 2002-03-06 | 2006-12-05 | L & P Property Management Company | Multiple horizontal needle quilting machine and method |
| 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 |
| JP5095101B2 (en) * | 2005-12-16 | 2012-12-12 | Ｊｕｋｉ株式会社 | Sewing machine thread trimmer |
| DE202006009410U1 (en) * | 2006-04-21 | 2007-08-30 | Dürkopp Adler AG | Thread-pulling knife for a sewing machine |
| DE102006019193A1 (en) * | 2006-04-21 | 2007-10-25 | Dürkopp Adler AG | Lockstitch sewing machine |
| JP5073272B2 (en) * | 2006-11-17 | 2012-11-14 | Ｊｕｋｉ株式会社 | sewing machine |
| JP4337063B2 (en) * | 2007-02-08 | 2009-09-30 | ヤマトミシン製造株式会社 | Sewing machine with thread trimmer |
| KR101364558B1 (en) * | 2007-06-26 | 2014-02-18 | 주식회사 썬스타 | Apparatus for upper thread cutting and holding of sewing machine |
| DE102009004218A1 (en) * | 2009-01-09 | 2010-07-15 | Dürkopp Adler AG | Thread cutting device for a sewing machine |
| CH704524A1 (en) * | 2011-02-28 | 2012-08-31 | Bernina Int Ag | The method for cutting the bottom and at least one upper thread and a method for embroidering and a device for carrying out the method. |
| DE102012205049A1 (en) * | 2012-03-29 | 2013-10-02 | Dürkopp Adler AG | Thread cutting assembly for a lace hole sewing machine |
| JP6530197B2 (en) * | 2015-02-06 | 2019-06-12 | Juki株式会社 | sewing machine |
| JP6560913B2 (en) * | 2015-06-26 | 2019-08-14 | Juki株式会社 | sewing machine |
-
2017
- 2017-05-05 DE DE102017207627.5A patent/DE102017207627A1/en not_active Withdrawn
-
2018
- 2018-04-18 EP EP18167987.9A patent/EP3399088B1/en active Active
- 2018-05-02 KR KR1020180050556A patent/KR102496909B1/en active IP Right Grant
- 2018-05-04 TW TW107115291A patent/TWI788349B/en active
- 2018-05-04 CN CN201810420418.6A patent/CN108796855B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260600A (en) * | 2007-03-06 | 2008-09-10 | 兄弟工业株式会社 | Sewing machine |
| CN101424015A (en) * | 2007-10-29 | 2009-05-06 | 大和缝纫机制造株式会社 | Wire-cutting device for sewing machine |
| CN101775714A (en) * | 2009-01-09 | 2010-07-14 | 杜尔克普-阿德勒股份公司 | Thread cutting device |
| DE102015223194B3 (en) * | 2015-11-24 | 2017-02-23 | Dürkopp Adler AG | A method for creating a seam beginning upper thread with short target seam projection and assembly for performing the method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3399088A1 (en) | 2018-11-07 |
| KR20180122949A (en) | 2018-11-14 |
| DE102017207627A1 (en) | 2018-11-08 |
| TW201843370A (en) | 2018-12-16 |
| TWI788349B (en) | 2023-01-01 |
| KR102496909B1 (en) | 2023-02-06 |
| CN108796855A (en) | 2018-11-13 |
| EP3399088B1 (en) | 2021-10-20 |
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