CN106968057B - Sewing machine - Google Patents
Sewing machine Download PDFInfo
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- CN106968057B CN106968057B CN201710024463.5A CN201710024463A CN106968057B CN 106968057 B CN106968057 B CN 106968057B CN 201710024463 A CN201710024463 A CN 201710024463A CN 106968057 B CN106968057 B CN 106968057B
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- nozzle opening
- sewing machine
- lower nozzle
- workpiece
- sewn
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B35/00—Work-feeding or -handling elements not otherwise provided for
- D05B35/02—Work-feeding or -handling elements not otherwise provided for for facilitating seaming; Hem-turning elements; Hemmers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention corrects the curling of the sewed object. The sewing machine is provided with first and second lower nozzle openings (311, 321) which eject air in two different directions toward an end edge portion side from a position on the upstream side of the feed direction of the sewing material compared with a needle drop position (P1, P2) and on the needle drop position side compared with the end edge portion of the sewing material to be sewn, wherein the first lower nozzle opening is arranged on the upstream side of the feed direction of the sewing material compared with the second lower nozzle opening, the ejection direction of the first lower nozzle opening (311) is orthogonal to the feed direction of the sewing material in a plan view, and the ejection direction of the second lower nozzle opening (321) is inclined relative to the feed direction of the sewing material in a plan view. The air ejected in two different directions can effectively horizontally extend the curl generated at the end edge of the sewed object, and the sewing can be performed without sewing the end edge.
Description
Technical Field
The present invention relates to a sewing machine suitable for sewing a curled material to be sewn.
Background
The material of the material to be sewn may be easily curled at the edge portion thereof, and if the material to be sewn is directly sewn by a sewing machine, the material may be sewn directly by dropping a needle from above the curled portion. If the curled edge portion is sewn in as described above, the sewn object must be discarded or all stitches must be detached and sewn again, which results in a very large loss in both cases.
Therefore, in the conventional sewing machine, the end edge portion of the object to be sewn, which is composed of the upper cloth and the lower cloth, is fed while being held by three cloth guide plates whose leading ends are projected to the upstream side in the cloth feeding direction, and the curled end edge portion is corrected by the side end portions of the cloth guide plates to be sewn (for example, refer to patent document 1).
Patent document 1: japanese laid-open patent publication No. 11-146989
However, since the conventional sewing machine feeds the cloth while holding the cloth by the three cloth guide plates, the cloth may be stretched at the time of feeding the cloth, which may adversely affect the sewing quality.
Further, the edge portion of the curled cloth is directly held by the three cloth guide plates, and there is a possibility that a feed failure occurs and a sewing operation becomes unstable.
Disclosure of Invention
The invention aims to provide a sewing machine which corrects the curl and stably feeds the cloth.
(1) The invention described is that the following is a novel,
a sewing machine is characterized in that a sewing machine body,
a first lower nozzle opening and a second lower nozzle opening which are arranged below the sewed object and eject air in two different directions towards the end edge part side from the upstream side of the feeding direction of the sewed object compared with the needle dropping position and the position which is closer to the needle dropping position compared with the end edge part of the sewed object,
the first lower nozzle opening is arranged on the upstream side of the second lower nozzle opening in the feeding direction of the workpiece,
the discharge direction of the first lower nozzle opening is orthogonal to the feed direction of the workpiece in a plan view,
the discharge direction of the second lower nozzle opening is inclined with respect to the feed direction of the workpiece in a plan view.
(2) The invention described in (1) is characterized in that, in the sewing machine described in (1),
the ejection direction of the second lower nozzle openings is inclined at an angle of 45 ° with respect to the ejection direction of the first lower nozzle openings.
(3) The invention described in (1) or (2) is characterized in that, in the sewing machine described in (1),
the discharge direction of the second lower nozzle opening is inclined toward a downstream side of the feed direction of the workpiece in plan view with respect to the discharge direction of the first lower nozzle opening.
(4) The invention described in (1) to (3) is characterized in that, in the sewing machine described in any one of (1) to (3),
a first and a second upper nozzle openings for ejecting air in two different directions toward the end edge portion side from a position on the upper side of the workpiece, the position being on the upstream side of the feeding direction of the workpiece with respect to the needle dropping position and being on the needle dropping position side with respect to the end edge portion of the workpiece to be sewn,
the first upper nozzle opening is arranged on the upstream side of the second upper nozzle opening in the feeding direction of the material to be sewn,
the discharge directions of the first and second upper nozzle openings are orthogonal or oblique to the feed direction of the material to be sewn in a plan view.
(5) The invention described in (4) is characterized in that, in the sewing machine described in (4),
the angle of inclination of the ejection direction of the second upper nozzle openings with respect to the ejection direction of the first upper nozzle openings is 45 °.
ADVANTAGEOUS EFFECTS OF INVENTION
The present invention includes first and second lower nozzle openings for blowing air in two different directions at the lower side of a workpiece, the blowing direction of the first lower nozzle opening is a direction orthogonal to the feeding direction of the workpiece, and the blowing direction of the second lower nozzle opening is a direction inclined to the feeding direction of the workpiece.
Further, since the curl of the material to be sewn is corrected by air, the material to be sewn can be fed without being pulled, and the sewing quality can be further improved. In addition, the cloth can be stably fed by preventing the occurrence of the feeding failure.
Drawings
Fig. 1 is an oblique view of the sewing machine according to the first embodiment as viewed from obliquely left and above.
Fig. 2 is an oblique view of the sewing machine viewed obliquely from the left proximal side upward.
FIG. 3 is a plan view of the periphery of the needle-drop position of the sewing machine.
Fig. 4 is a plan view of the lower nozzle with the metal cover removed.
Fig. 5 is a top view of the first and second upper nozzles.
Description of the reference numerals
10 Sewing machine
13 needle plate
14 cloth presser foot
31 first lower nozzle
311 first lower nozzle opening
32 second lower nozzle
321 second lower nozzle opening
41 first upper nozzle
411 first upper nozzle opening
42 second upper nozzle
421 second upper nozzle opening
Needle falling positions P1 and P2
Detailed Description
[ outline of embodiments of the invention ]
Next, a sewing machine 10 as a first embodiment of the present invention will be described with reference to fig. 1 to 5.
Fig. 1 is an oblique view of the sewing machine 10 viewed from obliquely above from the left, fig. 2 is an oblique view viewed from obliquely above from the left proximal end side, and fig. 3 is a plan view of the periphery of the needle drop position. The sewing machine 10 is a so-called lockstitch sewing machine.
In the following description, the horizontal upstream side in the feed direction of the workpiece is referred to as the "proximal side", the horizontal downstream side in the feed direction of the workpiece is referred to as the "distal side", the horizontal left-hand side direction toward the distal side is referred to as the "left side", and the horizontal right-hand side direction toward the distal side is referred to as the "right side".
The sewing machine 10 includes: a needle bar 12 for holding two sewing needles at a lower end portion; a needle bar up-and-down moving mechanism which moves the needle bar 12 up and down; a needle plate 13 for dropping two sewing needles; a lower looper mechanism which catches the upper thread passing through the sewing needle and winds the upper thread with the lower looper thread; an upper looper mechanism that catches the lower looper thread to be wound around the upper looper thread; a cloth presser foot 14 for pressing the sewed object from above on the needle plate 13; a feed mechanism for feeding the cloth by contacting the feed teeth with the lower surface of the sewed object pressed by the cloth presser foot 14; a cutter mechanism having a cloth cutter 15, wherein the cloth cutter 15 cuts the right side end of the sewed object in the cloth feeding direction; a sewing machine frame 20 for mounting the above-mentioned components; first and second lower nozzles 31, 32 for blowing air from a lower side of the material to be sewn toward a side end portion of the material to be sewn for lockstitching the material to be sewn on a proximal end side of the needle drop position; and first and second upper nozzles 41 and 42 for blowing air from the upper side of the material to be sewn toward the side end portion of the material to be sewn for lockstitching the side of the material to be sewn on the near-end side of the needle position.
The needle bar vertical moving mechanism, the lower looper mechanism, the upper looper mechanism, and the feeding mechanism are not shown in the drawings.
As shown in fig. 1, the sewing machine frame 20 includes: a sewing machine base part 21 located at a lower part; a vertical body part 22 rising from the sewing machine base part 21; and a sewing machine arm 23 extending from an upper end of the longitudinal body portion 22 in parallel with the sewing machine bed portion 21.
Further, the needle plate 13 described above is provided on the upper surface of one end portion of the sewing machine bed portion 21, and sewing is performed on the upper surface of the needle plate 13.
The needle bar vertical movement mechanism is a known structure, and includes: a sewing machine motor (not shown), a main shaft rotated by the sewing machine motor, and a crank mechanism for converting a rotational force of the main shaft into a driving force for moving up and down and applying the driving force to the needle bar 12, and therefore, detailed description thereof is omitted.
The needle bar 12 holds two sewing needles arranged in the left-right direction at the lower end portion thereof.
The lower looper mechanism includes: a cam mechanism for converting a rotational motion of the main shaft into a reciprocating rotational motion; and a lower looper that reciprocates in the left-right direction by a cam mechanism.
The looper has a thread take-out hole for taking out a looper thread to a sharp tip end portion facing the right, and captures the thread loops of the two upper threads from the two sewing needles by reciprocating the tip end portion in the left-right direction.
The upper looper mechanism includes: a cam mechanism for converting a rotational motion of the main shaft into a reciprocating rotational motion; and an upper looper that reciprocates in the vertical direction and the horizontal direction by a cam mechanism.
The upper looper has a thread take-out hole for taking out the upper looper thread to the tip end portion, and catches the thread loop of the lower looper thread from the lower looper when moving upward. When the upper looper moves leftward, the tip end of the upper looper reaches the upper side of the edge of the cloth as the material to be sewn, and at this time, the two sewing needles descend to enter the loops of the upper looper formed by the upper looper. Further, the loop of the upper thread formed when the sewing needle ascends from the lowest point is caught by the looper.
That is, the lockstitch sewing machine 10 realizes lockstitch sewing by the cooperative operation of the two sewing needles, the lower looper, and the upper looper.
As shown in fig. 1 and 2, the cloth presser foot 14 is in the form of a substantially rectangular flat plate and is supported by a presser foot wrist 141 so as to be movable up and down on the needle plate 13. The proximal end of the presser arm 141 is swingable, and the presser arm 141 is biased by a spring not shown via a presser bar 142 with a downward back pressure.
Thus, the cloth presser foot 14 can press and hold the material to be sewn downward on the needle plate 13.
The cloth presser foot 14 is supported by a presser foot wrist 141 in a state in which the rectangular longitudinal direction is along the cloth feeding direction. Fig. 3 shows the needle fall positions P1, P2 for two needles. As shown in the drawing, the right side of the distal end of the cloth presser foot 14 is set to the needle drop positions P1 and P2 of the two needles.
The feeding mechanism is provided with: feed teeth which upwardly advance and retreat tooth crests from an opening portion provided in the needle plate 13; and an action transmission mechanism which takes a sewing machine motor as a driving source and applies feeding action to the feeding teeth.
The motion transmission mechanism combines the reciprocating motion along the cloth feeding direction and the reciprocating motion along the vertical direction and transmits the combined motion to the feeding teeth, and the feeding teeth perform elliptic motion. In the section of the elliptical motion trajectory that rises and moves to the distal end side, the cutting edge of the feed tooth protrudes from the opening of the needle plate 13 and moves to the distal end side, so that the workpiece on the needle plate 13 can be fed to the distal end side.
The cutter mechanism reciprocates the cloth cutter 15 by a crank mechanism which performs reciprocating rotation from the main shaft.
The cloth cutter 15 has a blade edge formed at a lower end thereof for cutting the cloth, and the cloth cutter 15 is disposed such that the blade edge is along the cloth feeding direction in the vicinity of the right side of the cloth presser foot 14. The cloth cutter 15 is disposed on the upstream side of the needle fall positions P1 and P2 in the cloth feeding direction, and can cut the right side end of the workpiece in order along the cloth feeding direction before sewing.
[ lower nozzle ]
The first and second lower nozzles 31 and 32 eject air in a predetermined direction under the conveyed workpiece, and correct the curl generated at the edge portion of the workpiece subjected to the overlock sewing by the wind pressure.
As shown in fig. 4, the first and second lower nozzles 31 and 32 are formed of a metal pipe attached to the sewing machine bed 21.
Further, the first and second lower nozzles 31 and 32 made of these metal pipes are connected at one end sides thereof to a pressure supply source for generating predetermined high-pressure air, such as a pump or a compressor, via an air pipe. Further, between the pressure supply source and the first and second lower nozzles 31 and 32, a speed controller, an electromagnetic valve opened and closed by a control device controlling the entire sewing machine, and the like are provided (both are not shown).
Further, a first lower nozzle opening 311 and a second lower nozzle opening 321 for ejecting air are formed at the tip ends of the other end portions of the first and second lower nozzles 31 and 32, respectively.
This makes it possible to eject air at a predetermined flow rate from the first lower nozzle opening 311 and the second lower nozzle opening 321 of the first and second lower nozzles 31 and 32.
The first and second lower nozzle openings 311 and 321 are both disposed at the same height as or slightly higher than the upper surface of the needle plate 13 on the proximal end side of the needle plate 13, and the first and second lower nozzle openings 311 and 321 eject air in the horizontal direction.
As shown in fig. 1 and 3, the first and second lower nozzles 31 and 32 are covered with a metal cover 33, and the sewn product can smoothly pass through the upper surface thereof.
As shown in fig. 3, the first lower nozzle opening 311 of the first lower nozzle 31 and the second lower nozzle opening 321 of the second lower nozzle 32 are disposed on the left side (needle drop position side) in the left-right direction with respect to a position t1 of an edge portion of the material to be sewn, which is determined by cutting with the cloth cutter 15, where the overlock sewing is performed, in a plan view. The first lower nozzle opening 311 discharges air in a direction (right side) from the needle fall positions P1 and P2 toward the edge portion of the workpiece to be sewn at which the overlock sewing is performed, and the second lower nozzle opening 321 discharges air in a direction inclined to the direction.
That is, the first lower nozzle opening 311 ejects air rightward (in a direction orthogonal to the cloth feeding direction in a plan view), and ejects air obliquely from the second lower nozzle opening 321 toward the right distal end (in a direction toward the downstream side of the feeding direction of the workpiece from the ejecting direction of the first lower nozzle opening 311 in a plan view).
As shown in fig. 4, the angle θ 1 of the angle of inclination of the blowing direction of the second lower nozzle opening 321 with respect to the blowing direction of the first lower nozzle opening 311 is 45 ° in plan view.
As described above, the first lower nozzle opening 311 of the first lower nozzle 31 and the second lower nozzle opening 321 of the second lower nozzle 32 perform air ejection in two directions at a fixed wide angle, and thus the curl of the workpiece can be corrected significantly and more effectively than the ejection in the same direction.
Further, the angle θ 1 of the blowing direction of the second lower nozzle openings 321 with respect to the blowing direction of the first lower nozzle openings 311 is preferably 45 °, but the same degree of correction effect can be obtained even if the angle increases or decreases within a range of ± 15 ° with respect to 45 °.
The first and second lower nozzles 31 and 32 discharge air under the material to be sewn, but the present invention is not limited to the case where the edge portion of the material to be sewn curls toward the front side, and the correction effect can be obtained even when the material to be sewn curls toward the back side. Since the front surface side of the curled edge portion toward the back surface side of the workpiece is in a low-pressure state by the ejection of air from the first and second lower nozzles 31 and 32, the curled edge portion can be pulled in a direction extending horizontally and corrected.
[ Upper nozzle ]
The first and second upper nozzles 41 and 42 respectively eject air in a predetermined direction above the conveyed workpiece, and correct the curl generated at the edge portion of the workpiece subjected to the overlock sewing by the air pressure.
As shown in fig. 1 and 3, the first and second upper nozzles 41 and 42 are metal pipes attached to the arm 23 of the sewing machine.
The first and second upper nozzles 41 and 42 are connected at one end sides thereof to a pressure supply source such as a pump or a compressor for generating predetermined high-pressure air via an air pipe. Between the pressure supply source and the first and second upper nozzles 41 and 42, speed controllers 412 and 422, an electromagnetic valve (not shown) that is opened and closed by a control device that controls the entire sewing machine, and the like are provided.
Further, a first upper nozzle opening 411 and a second upper nozzle opening 421 for ejecting air are formed at the tip ends of the other end portions of the first and second upper nozzles 41 and 42, respectively.
This allows air to be ejected from the first upper nozzle opening 411 and the second upper nozzle opening 421 of the first and second upper nozzles 41 and 42 at a predetermined flow rate.
The first upper nozzle opening 411 and the second upper nozzle opening 421 are both disposed above the cloth presser foot 14 at the proximal end side of the needle fall positions P1 and P2, and the first and second upper nozzle openings 411 and 421 are both directed in a direction inclined downward to eject air.
As shown in fig. 3, the first upper nozzle opening 411 of the first upper nozzle 41 and the second upper nozzle opening 421 of the second upper nozzle 42 are both disposed on the left side (needle drop position side) with respect to a position t1 of an end edge portion of the material to be sewn, in the left-right direction in a plan view. The first and second upper nozzle openings 411 and 421 eject air in a direction (right side) from the needle drop positions P1 and P2 toward the edge portion side of the material to be sewn where the overlock sewing is performed or in a direction inclined toward the direction with respect to the cloth feeding direction.
That is, the first and second upper nozzle openings 411 and 421 eject air in a direction inclined toward the right proximal end side.
As shown in fig. 5, the angle θ 2 of the angle of inclination of the blowing direction of the second upper nozzle openings 421 with respect to the blowing direction of the first upper nozzle openings 411 is 45 ° in plan view.
As described above, in the case of the first and second upper nozzles 41 and 42, as well as in the case of the first and second lower nozzles 31 and 32, the first upper nozzle opening 411 and the second upper nozzle opening 421 perform the air ejection in two directions at a constant wide angle, and thus the curl of the material to be sewn can be corrected significantly and more effectively than the ejection in the same direction.
The angle θ 2 of the blowing direction of the second upper nozzle openings 421 with respect to the blowing direction of the first upper nozzle openings 411 is also preferably 45 °, but the angle θ 2 can be appropriately changed according to the type of the material to be sewn.
The first upper nozzle 41 and the second upper nozzle 42 eject air above the material to be sewn, but the correction effect can be obtained not only when the edge portion of the material to be sewn curls toward the front side but also when the material to be sewn curls toward the back side. That is, as in the case of the lower nozzle 31, the front surface side of the end edge portion of the material to be sewn, which curls toward the back surface side, is set to a low pressure state by the ejection of air, and the curled end edge portion can be horizontally extended and corrected.
[ technical effects of embodiments of the invention ]
The sewing machine 10 includes the first and second lower nozzles 31 and 32 blowing air in two different directions at the lower side of the object to be sewn, and the blowing directions of the first lower nozzle opening 311 of the first lower nozzle 31 and the second lower nozzle opening 321 of the second lower nozzle 32 are orthogonal to the feeding direction of the object to be sewn and inclined, respectively.
Similarly, the sewing machine 10 has the first and second upper nozzles 41 and 42 for blowing air in two different directions on the upper side of the workpiece, and the blowing directions of the first upper nozzle opening 411 of the first upper nozzle 41 and the second upper nozzle opening 421 of the second upper nozzle 42 are directions inclined with respect to the feeding direction of the workpiece, so that the curl of the workpiece can be effectively corrected by the blowing of the air from these nozzles, and the sewing quality can be improved.
Further, since the first and second lower nozzles 31 and 32 and the first and second upper nozzles 41 and 42 correct the curl of the workpiece by air, unlike the case where the correction is performed by contact with the workpiece, the workpiece is not caught or stretched, and therefore, the sewing quality can be further improved. In addition, the cloth can be stably fed by preventing the occurrence of the feeding failure.
Further, since the inclination angle θ 1 of the discharge direction of the second lower nozzle opening 321 with respect to the discharge direction of the first lower nozzle opening 311 and the inclination angle θ 2 of the discharge direction of the second upper nozzle opening 421 with respect to the discharge direction of the first upper nozzle opening 411 are both set to 45 °, the curled material can be corrected more effectively.
Further, since the discharge directions of the discharge from the first and second lower nozzle ports 311 and 321 are set to a direction (right side) from the needle drop positions P1 and P2 toward the edge portion side of the material to be sewn where the overlock sewing is performed and a direction inclined toward the direction in plan view, the curl generated at the edge portion where the overlock sewing is performed can be extended horizontally, and the overlock sewing of the edge portion where the curl is applied can be effectively reduced.
Similarly, the discharge directions from the first and second upper nozzle openings 411 and 421 are set to directions inclined in the direction (right side) from the needle drop positions P1 and P2 toward the edge portion side of the material to be sewn where hemming sewing is performed in a plan view, and therefore hemming sewing of the edge portion in the case of a curl can be effectively reduced.
[ others ]
The sewing machine 10 is exemplified as a lockstitch sewing machine of two needles, but the lockstitch sewing machine of one needle may be provided with the lower nozzles 31, 32 or the first and second upper nozzles 41, 42.
Further, the lower nozzle 31 or the first and second upper nozzles 41 and 42 may be provided in the same manner as long as the sewing machine is provided with a cloth feeding mechanism having a feed tooth, without being limited to the lockstitch sewing machine.
Further, the first and second lower nozzles 31 and 32 and the first and second upper nozzles 41 and 42 may be connected to a pressure supply source that generates high-pressure air by collecting one end portion side thereof and may be configured by one nozzle having a nozzle opening formed by being bifurcated on the other end portion side thereof.
Claims (7)
1. A sewing machine is characterized in that a sewing machine body,
a first lower nozzle opening and a second lower nozzle opening which are arranged below the sewed object and eject air in two different directions towards the end edge part side from the upstream side of the feeding direction of the sewed object compared with the needle dropping position and the position which is closer to the needle dropping position compared with the end edge part of the sewed object,
the first lower nozzle opening is arranged on the upstream side of the second lower nozzle opening in the feeding direction of the workpiece,
the discharge direction of the first lower nozzle opening is orthogonal to the feed direction of the workpiece in a plan view,
the discharge direction of the second lower nozzle opening is inclined with respect to the feed direction of the workpiece in a plan view.
2. The sewing machine of claim 1,
the ejection direction of the second lower nozzle openings is inclined at an angle of 45 ° with respect to the ejection direction of the first lower nozzle openings.
3. Sewing machine as in claim 1 or 2,
the discharge direction of the second lower nozzle opening is inclined toward a downstream side of the feed direction of the workpiece in plan view with respect to the discharge direction of the first lower nozzle opening.
4. Sewing machine as in claim 1 or 2,
a first and a second upper nozzle openings for ejecting air in two different directions toward the end edge portion side from a position on the upper side of the workpiece, the position being on the upstream side of the feeding direction of the workpiece with respect to the needle dropping position and being on the needle dropping position side with respect to the end edge portion of the workpiece to be sewn,
the first upper nozzle opening is arranged on the upstream side of the second upper nozzle opening in the feeding direction of the material to be sewn,
the discharge directions of the first and second upper nozzle openings are orthogonal or oblique to the feed direction of the material to be sewn in a plan view.
5. The sewing machine of claim 3,
a first and a second upper nozzle openings for ejecting air in two different directions toward the end edge portion side from a position on the upper side of the workpiece, the position being on the upstream side of the feeding direction of the workpiece with respect to the needle dropping position and being on the needle dropping position side with respect to the end edge portion of the workpiece to be sewn,
the first upper nozzle opening is arranged on the upstream side of the second upper nozzle opening in the feeding direction of the material to be sewn,
the discharge directions of the first and second upper nozzle openings are orthogonal or oblique to the feed direction of the material to be sewn in a plan view.
6. The sewing machine of claim 4,
the angle of inclination of the ejection direction of the second upper nozzle openings with respect to the ejection direction of the first upper nozzle openings is 45 °.
7. Sewing machine as in claim 5,
the angle of inclination of the ejection direction of the second upper nozzle openings with respect to the ejection direction of the first upper nozzle openings is 45 °.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-004909 | 2016-01-14 | ||
| JP2016004909A JP2017124024A (en) | 2016-01-14 | 2016-01-14 | sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106968057A CN106968057A (en) | 2017-07-21 |
| CN106968057B true CN106968057B (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710024463.5A Active CN106968057B (en) | 2016-01-14 | 2017-01-13 | Sewing machine |
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| Country | Link |
|---|---|
| JP (1) | JP2017124024A (en) |
| CN (1) | CN106968057B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5197722A (en) * | 1991-10-28 | 1993-03-30 | Union Special Corporation | Cloth folding device with airblower for uncurling ends |
| CN1278027A (en) * | 1999-06-18 | 2000-12-27 | 大和缝纫机制造株式会社 | Sewing machine having means for correcting curling-up |
| CN201981362U (en) * | 2011-02-23 | 2011-09-21 | 大和缝纫机(宁波)有限公司 | Air blowing type turned edge-resistant machine |
| CN202247284U (en) * | 2011-10-11 | 2012-05-30 | 吴瑞椅 | Fabric edge rolling preventing device of sewing machine |
| CN203559232U (en) * | 2013-09-02 | 2014-04-23 | 精机机械厂股份有限公司 | Blowing-to-flat structure for sewing material hem of sewing machine |
-
2016
- 2016-01-14 JP JP2016004909A patent/JP2017124024A/en active Pending
-
2017
- 2017-01-13 CN CN201710024463.5A patent/CN106968057B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5197722A (en) * | 1991-10-28 | 1993-03-30 | Union Special Corporation | Cloth folding device with airblower for uncurling ends |
| CN1278027A (en) * | 1999-06-18 | 2000-12-27 | 大和缝纫机制造株式会社 | Sewing machine having means for correcting curling-up |
| CN201981362U (en) * | 2011-02-23 | 2011-09-21 | 大和缝纫机(宁波)有限公司 | Air blowing type turned edge-resistant machine |
| CN202247284U (en) * | 2011-10-11 | 2012-05-30 | 吴瑞椅 | Fabric edge rolling preventing device of sewing machine |
| CN203559232U (en) * | 2013-09-02 | 2014-04-23 | 精机机械厂股份有限公司 | Blowing-to-flat structure for sewing material hem of sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106968057A (en) | 2017-07-21 |
| JP2017124024A (en) | 2017-07-20 |
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