CN107653580B - Sewing machine for sewing long strip-shaped object - Google Patents
Sewing machine for sewing long strip-shaped object Download PDFInfo
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- CN107653580B CN107653580B CN201710601538.1A CN201710601538A CN107653580B CN 107653580 B CN107653580 B CN 107653580B CN 201710601538 A CN201710601538 A CN 201710601538A CN 107653580 B CN107653580 B CN 107653580B
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- strip
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- 238000009958 sewing Methods 0.000 title claims abstract description 246
- 239000004744 fabric Substances 0.000 claims abstract description 207
- 238000005520 cutting process Methods 0.000 claims abstract description 105
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 54
- 238000003825 pressing Methods 0.000 claims description 15
- 230000007547 defect Effects 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 4
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003187 abdominal effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
- D05B37/04—Cutting devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B33/00—Devices incorporated in sewing machines for supplying or removing the work
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B35/00—Work-feeding or -handling elements not otherwise provided for
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- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a sewing machine for sewing a belt, which is provided with a fabric stopping device, wherein when a sewing terminal end of a preceding fabric reaches a specified belt cutting position, a fabric part protruding towards the downstream side of the sewing advancing direction of a belt sewing part in a sewing starting end of a following fabric can be made to locally avoid the belt cutting position of the belt cutting device or be stopped at the upstream side of the belt cutting position in the sewing advancing direction under the condition that a plurality of fabrics are continuously sewn on the side edge parts of the plurality of fabrics by a sewing part and supplied by the sewing part while the fabrics are sequentially conveyed, thereby avoiding the defect that a part of the following fabric is unnecessarily cut, and automatically and accurately performing cutting processing in a mode of not wasting the belt.
Description
Technical Field
The present invention relates to a sewing machine for sewing a long strip-like article, which is used when sewing a long strip-like article such as lace (lace) or flat rubber, by overlapping the leg of a cut fabric such as shorts or swimwear.
Background
As shown in fig. 7, generally, a cut fabric W having a curved special shape is used for side edge portions We and We of both legs of pants, swimsuits, and the like. As shown in fig. 8, a tape-like material T, T such as a tape or a flat rubber is sewn to the curved side edge portions We, We of the cut fabric W as both leg portions, and the entire cut fabric W is folded in two and side-sewn to form an abdominal periphery, thereby producing a sewn product such as pants or swimwear.
Generally, as shown in fig. 9, in the production of such a sewn product, a plurality of cut materials, i.e., a leading material W1 and a trailing material W2, are successively placed on a needle plate 1 of a sewing machine, while the plurality of cut materials W1 and W2 are sequentially fed to a sewing portion 2 including a needle drop portion formed on the needle plate 1, a long strip T is continuously fed and supplied to side edge portions We and We of the leading material W1 and the trailing material W2 at a position upstream in a sewing direction Y of the sewing portion 2, and the long strip T is continuously sewn, and after a predetermined amount of sewing is completed, a strip portion Ta connected between the leading material W1 and the trailing material W2 is manually cut with scissors or the like.
However, in this case, there are problems as follows: in order to cut a sewn strip, a manual operation using scissors or the like is required, and the sewing operation must be temporarily interrupted every time, so that the sewing operation efficiency is liable to deteriorate, the productivity is liable to decrease, the production cost is liable to increase, and the fabric is liable to be damaged with the use of scissors or the like.
Therefore, in order to eliminate the need for the manual operation by the scissors or the like, for example, a sewing machine provided with a belt cutting device as described in japanese utility model publication No. 2-10995 has been proposed in the related art. Specifically, as shown in fig. 10, a sewing machine provided with a strip cutting device 3 is known in the art, in which the strip cutting device 3 cuts a long strip T sewn at a position downstream of a sewing portion 2 in a sewing direction Y along a direction substantially orthogonal to the sewing direction Y, that is, a width direction of the long strip T.
The strip cutting device 3 is described in detail in the embodiment of the present invention, and includes a fixed lower blade 3A and a movable upper blade 3B that is slidably swingable from above toward below with respect to the lower blade 3A.
Disclosure of Invention
In the case of the conventional sewing machine for sewing a long strip using the strip cutter 3 having the above-described configuration, in which the long strip T is continuously fed and supplied to the curved side edge portions We and We of the preceding cloth W1 and the following cloth W2 while a plurality of cut cloths W1 and W2 are sequentially placed on the needle plate 1 and sequentially conveyed in the sewing direction Y with respect to the sewing portion 2, and the long strip T is continuously sewn, since the cut cloths have a special shape as shown in fig. 7, when the strip sewing end portion of the preceding cloth W1 and the strip sewing start end portion of the following cloth W2 are brought close to each other so as to secure a minimum interval necessary for the cutting operation of the strip cutter 3 therebetween, the following problem occurs: a part of the sewing start end portion of the succeeding material W2 protrudes downstream in the sewing direction Y of the belt sewing start end portion, and this protruding material portion is unnecessarily cut when the belt cutting device 3 functions to cut the long belt T.
In order to avoid such a problem that a part of the web portion of the succeeding web W2 is unnecessarily cut, the following method is adopted: as shown in fig. 10, the long strip T is sewn between the strip sewing terminal end portion W1e of the preceding cloth W1 and the strip sewing starting end portion W2b of the succeeding cloth W2 with a predetermined interval d at which a part of the sewing starting end portion of the succeeding cloth W2 does not protrude, and when the strip portion corresponding to the predetermined interval d reaches the cutting position of the strip cutting apparatus 3 by the cloth conveyance, the strip cutting apparatus 3 is operated, whereby the long strip T is cut without cutting a part of the cloth portion of the succeeding cloth W2 unnecessarily. Therefore, when the long strip T is continuously sewn to the side edge portions We, We of the plurality of cut materials W1, W2 for the cut material W having the special shape shown in fig. 7, there is a problem that the strip portion Tb shown in D of fig. 10 is wasted (lost), and the wasted strip portion Tb also has a problem that it is necessary to cut it by a sewing machine or manually at the time of side sewing.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a sewing machine for sewing a long strip-like material, which can avoid a problem that a part of a subsequent material is unnecessarily cut when continuously sewing the long strip-like material on side edge portions of a plurality of materials, and can automatically and accurately perform a cutting process so as not to waste the strip-like material.
In order to achieve the above object, the present invention relates to a sewing machine for sewing a long strip-like article, comprising: a needle plate and a fabric slide plate for placing fabric and guiding the fabric to be conveyed in a predetermined sewing advancing direction; a sewing part which comprises a needle falling part formed on the needle plate; a strip feeding device for feeding and supplying a long strip-shaped material so as to be overlapped with the side edge part of the fabric at an upstream side position in a sewing advancing direction of the sewing part; and a strip cutting device which is arranged at a position on a downstream side of the sewing advancing direction of the sewing part and cuts the long strip sewn at the side edge part of the fabric when passing through the sewing part along a width direction of the strip approximately orthogonal to the sewing advancing direction, wherein the sewing machine for sewing the long strip comprises: and a fabric stopping device which, when a sewing terminal end portion of a preceding fabric reaches a predetermined tape cutting position in a case where a plurality of fabrics are successively conveyed while continuously sewing a long tape-like material which is continuously fed and supplied to side edge portions of the plurality of fabrics by the sewing portion, can cause a fabric portion of a sewing starting end portion of a succeeding fabric which protrudes toward a downstream side in a sewing traveling direction of a sewing portion of the long tape-like material to partially avoid a tape cutting position of the tape cutting device or to be stopped at a position on an upstream side in the sewing traveling direction from the tape cutting position.
Effects of the invention
According to the sewing machine for sewing a long strip-like article according to the present invention having the above-described features, in the case of continuously feeding and supplying a long strip-like article, which is continuously sewn to the side edge portions of a plurality of fabrics by the sewing portion while sequentially conveying the plurality of fabrics, the sewing terminal end portion of the strip-like article of the preceding fabric and the sewing starting end portion of the strip-like article of the succeeding fabric are brought close to each other so as to secure the minimum interval necessary for the cutting operation of the strip-like article cutting device therebetween, and thus the strip-like article can be automatically cut at a position where the waste of the strip-like article is not generated. However, in the case where the sewing is continuously performed in a state where a part of the sewing starting end portion of the succeeding fabric projects to the downstream side in the sewing traveling direction of the band starting end portion as the band sewing terminal end portion of the preceding fabric and the band sewing starting end portion of the succeeding fabric are brought closer together so as to secure the minimum interval necessary for the cutting operation of the band cutting device, when the sewing terminal end portion of the preceding fabric reaches the predetermined band cutting position, the fabric blocking device is operated to partially prevent the protruding fabric portion projecting to the downstream side in the sewing traveling direction from the band cutting position of the band cutting device or to block the protruding fabric portion projecting to the upstream side in the sewing traveling direction from the band cutting position, and therefore, the following effects are obtained: the above-described problem that the projected fabric portion is unnecessarily cut by the belt-like object cutting device can be avoided, and the cutting process can be accurately performed without wasting the belt-like object as described above.
In the sewing machine for sewing a long strip-like article according to the present invention, it is preferable that the material stopping device is configured to actively push back a material portion protruding to a downstream side in a sewing traveling direction of a sewing portion of the long strip-like article in a sewing start end portion of a subsequent material to a position on an upstream side in the sewing traveling direction from a strip-like article cutting position of the strip-like article cutting device, thereby avoiding the strip-like article cutting position.
In this case, by pushing the projected fabric portion back to the distant position on the upstream side in the sewing direction of the tape cutting position, it is possible to reliably avoid the occurrence of a problem that the projected fabric portion is cut by mistake.
In the sewing machine for sewing a long strip-like article according to the present invention, it is preferable that the material blocking device is disposed inside the sewing machine frame with respect to a presser foot that supports a material presser foot that presses the material placed on the needle plate against the needle plate.
In this case, the presser foot supporting the material presser foot functions as a contact prevention protection for the movable material stopper, and is effective in providing a feeling of security to the sewing operator and ensuring safety.
In particular, it is preferable that the material blocking device is disposed at the position (a position closer to the inside of the sewing machine frame than a presser foot supporting the material presser foot) so as to be movable forward from a position on the downstream side in the sewing direction to a position on the upstream side in the sewing direction, and that the material blocking device includes a material presser bar and a drive cylinder, the drive cylinder driving the material presser bar to move forward and backward between the two positions, and an anti-slip rubber attached to a leading end portion of the material presser bar so as to come into contact with a protruding material portion of the following material.
In this case, the anti-slip rubber comes into contact with the projected fabric portion projecting to the downstream side in the sewing direction in the succeeding fabric in accordance with the forward movement of the fabric pressing bar of the fabric stopper, and also acts to push back the projected fabric portion to the upstream side in the sewing direction, whereby the occurrence of an undesirable situation in which the projected fabric portion is unnecessarily cut by the band cutting device can be more reliably avoided.
In the sewing machine for sewing a long strip-like article according to the present invention, it is preferable that a material conveying belt is disposed on an upper portion of the material sliding plate located on a downstream side in a sewing advancing direction from a cutting position of the strip-like article cutting device, and the material conveyed between the material conveying belt and the material sliding plate can be forcibly conveyed in the sewing advancing direction.
In this case, when continuously sewing the long belt-like object to the plurality of fabrics, even if the sewing operator manually conveys the fabrics, particularly the preceding fabrics, to the downstream side in the sewing traveling direction, the fabric conveyor belt can automatically convey the fabrics along the upper surface of the fabric slide plate, and thus the work of continuously sewing the long belt-like object to the side edge portions of the plurality of fabrics can be easily and smoothly performed with a small work load.
In the sewing machine for sewing a long strip-like article according to the present invention, it is preferable that a distal end portion of the air ejector is disposed on an upstream side in a sewing traveling direction from a cutting position of the strip-like article cutting device, and that the air is ejected to a projected fabric portion of the following fabric, which is stopped by the fabric stopper device at the upstream side in the sewing traveling direction after the cutting by the strip-like article cutting device, so as to assist the projected fabric portion to move between the fabric transport belt and the fabric slide plate.
In this case, by ejecting air from a position on the upstream side in the sewing direction to a protruding fabric portion of the following fabric which is prevented from being wrinkled at the position on the upstream side in the sewing direction by the fabric stopper, the following fabric can be spread in a blown-up state on the downstream side in the sewing direction, and the movement of the fabric into between the fabric conveyor and the fabric slide plate can be assisted, so that the work of continuously sewing the long strip-like object to a plurality of fabrics can be performed more smoothly and efficiently.
Drawings
Fig. 1 is an overall perspective view of a sewing machine for sewing a long strip-like article according to an embodiment of the present invention.
Fig. 2 is an enlarged perspective view of a main part of the sewing machine for sewing a long strip-like article.
Fig. 3 is a perspective view of a belt cutting device in the sewing machine for sewing a long belt.
Fig. 4 is an exploded perspective view of the strip cutting device.
Fig. 5 is an enlarged plan view of a main part for explaining a state in which the long belt is continuously sewn to the plurality of materials by the sewing machine for sewing a long belt.
Fig. 6 is an enlarged side view showing a main part of the state of fig. 5.
Fig. 7 is a view showing the shape of a cut fabric to be sewn.
Fig. 8 is a view for explaining a sewing state in which the long tape is sewn to the cut fabric.
Fig. 9 is a plan view of a main part for explaining a general continuous sewing state.
Fig. 10 is a plan view of a main part for explaining a state of continuous sewing in a conventional sewing machine for sewing a long strip-like article having a device for cutting a strip-like article.
Description of the reference numerals
1 needle board
2 sewn part
3 tape cutting device (strip tape cutting device)
4 Cross plate (Lining slide)
5 Belt conveyor (belt-like article feeding device)
6 fabric presser foot
7 surface fabric conveyer belt
8 surface fabric stop device
9 gas ejector tube device
25 fabric pressing rod
26 driving cylinder
27 antiskid rubber
28 pressing seat
40 Sewing machine frame
M Sewing machine for sewing (Sewing machine for sewing strip belt)
W-cut fabric
We bending the side edge
W1 advanced fabric
W2 subsequent fabric
W2c protruding fabric part
T belt (strip belt)
Y sewing direction
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
Fig. 1 is an overall perspective view of a sewing machine for sewing a long strip-like article according to the present invention, and fig. 2 is an enlarged perspective view of a main part of the sewing machine for sewing a long strip-like article.
In the sewing machine M for sewing a long strip-like article, a needle plate 1 and a fabric slide plate (cross plate) 4 for placing a cut fabric W having a special shape shown in fig. 7 and guiding the feed of the cut fabric W in the sewing traveling direction Y are provided at an upper portion of a sewing machine base 41 connected to a left side portion of a sewing machine frame 40, and feed dogs for intermittently feeding the cut fabric W in the sewing traveling direction Y, a drive mechanism thereof, and the like are incorporated in the sewing machine base 41, and the feed dogs, the drive mechanism, and the like are well known, and therefore, the illustration and the description of the specific configuration are omitted.
A needle drop portion through which a needle (not shown) reciprocating up and down moves in the up-down direction is formed in the needle plate 1, and a sewing portion 2 is formed, which sews a long strip-like object T (hereinafter referred to as a band T) such as a band for shorts or a flat rubber for swimwear to a curved side edge portion We of the cut fabric W by the needle drop portion, the needle, and a fabric presser foot 6 which presses the cut fabric W placed on the needle plate 1 against the needle plate 1.
In addition to the above configuration, the sewing machine M for sewing a long strip includes: a tape feeding and discharging device 5 (hereinafter, referred to as a tape feeding device 5) for feeding and discharging the tape T so as to overlap the curved side edge portion We of the cut fabric W at a position upstream of the sewing portion 2 in the sewing direction Y; a belt cutting device 3 (hereinafter referred to as a belt cutting device 3) disposed at a position downstream of the sewing portion 2 in the sewing direction Y; a fabric conveyor belt 7 disposed on the downstream side of the cutting position of the tape cutting device 3 in the sewing direction Y; a fabric stopping device 8; a gas lance device 9; and a projector 31a and a light receiver 31b for outputting a cutting operation command to the tape cutting device 3.
The belt conveying device 5 includes: a belt separating roller 10 rotatably supported at a rear upper position of the sewing machine frame 40, for aligning a belt T drawn upward from a belt accommodating portion (not shown) provided on a bottom surface thereof to thereby adjust a belt posture to a constant level; a belt forced feeding driving roller 11 which forcibly pulls out the belt T from the belt separating roller 10 and forcibly feeds the pulled-out belt T to an upstream side position in the sewing traveling direction Y of the sewing portion 2; and a plurality of tape guides 12 that guide the forced movement of the tape T.
As shown in fig. 2, the tape cutting device 3 mainly includes a fixed lower cutter 3A disposed right behind the needle plate 1 in the sewing direction Y, a movable upper cutter 3B slidably oscillating from above toward below with respect to the lower cutter 3A, and an air cylinder 3C serving as an actuator for driving the movable upper cutter 3B, and the tape cutting device 3 is configured to cut the tape T sewn to the curved side edge portion We of the cut fabric W in the tape width direction substantially orthogonal to the sewing direction Y.
The specific structure of the tape cutting device 3 is shown in fig. 3 and 4. That is, the shaft member 13 having the movable upper knife 3B fixed to the tip thereof is rotatably supported by the upper knife holder 15 around the axis along the sewing direction Y, the upper knife holder 15 is fixed to the sewing machine frame 40 by the stopper screw 14, and the fixed lower knife 3A is fixed to the fixed lower knife holder 16 by the stopper screw 17 at the upstream end of the upper knife holder 15 in the sewing direction Y.
An upper blade pressing spring 19 is provided between the upper blade holder 15 and a collar 18 fixed to the shaft member 13, and is biased by an elastic force of the upper blade pressing spring 19 so as to press the upper blade 3B toward the lower blade 3A to be slidably swung. Further, an upper cutter coupling member 20 capable of coupling the lower end member 21a of the extendable rod 21 of the cylinder 3C at a position offset from the axial center of the shaft member 13 is fixed to a downstream end portion of the shaft member 13 in the sewing traveling direction Y.
The tape cutting device 3 having the above-described specific configuration is configured to exert a tape cutting action by causing the movable upper blade 3B to slide against the lower blade 3A from above to below by contracting the cylinder 3C and rotating the shaft member 13, and to cause the movable upper blade 3B to swing upward relative to the lower blade 3A by rotating the shaft member 13 in the reverse direction by extending the cylinder 3C.
The fabric transport belt 7 is disposed above the cross plate 4 portion located on the downstream side in the sewing traveling direction Y of the cutting position of the belt cutting device 3, and a circular belt (round belt) having a circular cross section is generally used. The fabric transport belt 7 is wound around two pulleys 23a and 23b pivotally supported at an inclined lower end portion of a fixed belt seat 22 at positions forward and backward in the sewing traveling direction Y, and a pulley (not shown) pivotally supported at an inclined upper end portion of the fixed belt seat 22, and the fixed belt seat 22 extends obliquely from a position facing the cross plate 4 toward a position upstream on a downstream side in the sewing traveling direction Y. The axes of the pulleys at the inclined upper end of the fixed belt seat 22 are directly connected to a stepping motor 24, and the fabric conveyor belt 7 is driven by the stepping motor 24, whereby a horizontal conveyor belt portion 7a provided between the two pulleys 23a and 23b to face the cross plate 4 substantially in parallel is driven to move in the same direction as the sewing traveling direction Y.
The fabric conveyor belt 7 configured as described above functions as follows: after the tape cutting device 3 cuts the tape, the cut material W moved between the cross plate 4 and the horizontal conveyor belt portion 7a is forcibly transferred in the sewing traveling direction Y.
As shown clearly in fig. 2, the fabric stopper 8 includes a fabric pressing rod 25 and an air cylinder 26, the air cylinder 26 drives the fabric pressing rod 25 to move forward and backward between a downstream upper position in the sewing direction Y and an upstream lower position in the sewing direction Y, and an anti-slip rubber 27 abutting against a protruding fabric portion (described later) of the following fabric W2 is attached to a distal end portion of the fabric pressing rod 25.
As shown in fig. 5 and 6, the fabric stopper 8 configured as described above is configured to continuously feed and supply the tape T to the curved side edge portions We and We of the fabrics W1 and W2 while sequentially conveying the plurality of cut fabrics W, i.e., the leading fabric W1 and the following fabric W2 in the sewing direction Y, and continuously sewing the tape T by the sewing portion 2, when the sewing end portion of the preceding fabric W1 reaches the cutting position of the tape cutting device 3, the anti-slip rubber 27 is driven to advance so as to abut against the fabric portion W2c protruding toward the downstream side in the sewing direction Y of the tape sewing portion among the sewing start end portions of the succeeding fabric W2, this prevents the projected fabric portion W2c from being located upstream of the cutting position of the tape cutting device 3 in the sewing direction Y, and allows the projected fabric portion W2c to partially avoid the cutting position.
The cloth stopper 8 is disposed inside the sewing machine frame 40 from the presser foot 28, and the presser foot 28 is disposed along the left side of the sewing machine frame 40 so as to support the cloth presser 6 that presses the cut cloth placed on the needle plate 1 against the needle plate 1. Thus, the presser foot 28 supporting the material presser foot 6 functions as a contact prevention protection for the material stopper 8 driven to move forward and backward between the downstream upper position in the sewing direction Y and the upstream lower position in the sewing direction Y.
The air ejector 9 is formed with an air ejection port 30a for ejecting air toward the tape cutting position of the tape cutting device 3 by bending a downstream end portion in the sewing direction Y of the air tube 30 fixed to the left side surface portion of the fixed tape holder 22 via a mounting jig 29 in a state along the sewing direction Y at an upper position of the cross plate 4 obliquely downward.
The air ejector 9 is configured to eject air from the air ejection port 30a toward the projected fabric portion W2c, which is folded at a position on the upstream side in the sewing direction Y and stopped by the fabric stopper 8, to blow up the projected fabric portion W2c on the downstream side in the sewing direction Y and transfer the projected fabric portion, and to assist the movement of the succeeding fabric W2 between the fabric conveyer 7 and the cross plate 4.
Next, the operation of sewing the band T such as a band or a flat rubber along the curved side edge portion We of the cut material W such as shorts or swimwear using the sewing machine M for sewing a long band (band) according to the present embodiment configured as described above will be described mainly with reference to fig. 5 and 6.
A plurality of cut fabrics, i.e., a leading fabric W1 and a trailing fabric W2, are successively placed on a needle plate 1 of a sewing machine, and while the leading and trailing fabrics W1 and W2 are sequentially fed to a sewing portion 2 including a needle drop portion formed on the needle plate 1, a tape T is continuously fed and supplied to curved side edge portions We and We of the leading fabric W1 and the trailing fabric W2 at a position upstream in a sewing direction Y of the sewing portion 2, and the tape T is continuously sewn.
As described above, when the tape T is continuously sewn to the curved side edge portions We and We of the preceding fabric W1 and the following fabric W2, the tape sewing terminal end portion W1e of the preceding fabric W1 and the tape sewing starting end portion W2b of the following fabric W2 are continuously sewn so as to be close to each other with a minimum interval required for the cutting operation of the tape cutting device 3 secured therebetween, and when the minimum interval portion between the tape sewing terminal end portion W1e of the preceding fabric W1 and the tape sewing starting end portion W2b of the following fabric W2 reaches the cutting position, the tape cutting device 3 performs the cutting operation in response to the operation command of the light emitter 31a and the light receiver 31b, and the tape T can be automatically cut without wasting the tape T.
However, in the case where continuous sewing is performed by bringing the tape sewing terminal end portion W1e of the leading fabric W1 and the tape sewing starting end portion W2b of the following fabric W2 closer to each other so as to secure the minimum interval necessary for the cutting operation of the tape cutting device 3, if the sewing is performed in a state where a part W2c of the sewing starting end portion of the following fabric W2 protrudes to the downstream side in the sewing advancing direction Y of the tape sewing starting end portion W2b, the protruding fabric portion W2c may be unnecessarily cut when the tape cutting device 3 performs the tape cutting.
In order to avoid this situation, according to the present embodiment, when the sewing terminal end portion of the preceding fabric W1 reaches the predetermined tape cutting position, the fabric stopper 8 is operated to stop the projected fabric portion W2c of the succeeding fabric W2 at a position upstream in the sewing traveling direction Y from the cutting position of the tape cutting device 3, whereby the projected fabric portion W2c can be made to avoid the cutting position, and thus a problem that the projected fabric portion W2c is unnecessarily cut by the tape cutting device 3 can be avoided.
After the tape is cut, air is blown out from the air nozzle 30a of the air nozzle device 9 toward the projected fabric portion W2c which is wrinkled at a position stopped by the fabric stopper 8 at the upstream side in the sewing direction Y, so that the projected fabric portion W2c is blown up to the downstream side in the sewing direction Y to assist the transfer of the succeeding fabric W2 between the fabric conveyer belt 7 and the cross plate 4, and the fabric conveyer belt 7 is automatically conveyed even if the sewing operator conveys the succeeding fabric W2 by hand. Therefore, the continuous sewing operation of the belt T to the plurality of fabrics can be easily and smoothly performed.
In the above embodiment, the fabric stopper 8 is configured to abut against the projected fabric portion W2c of the succeeding fabric W2 to stop the projected fabric portion W2c at a position upstream of the cutting position of the tape cutting device 3 in the sewing traveling direction Y, thereby avoiding the projected fabric portion W2c from the cutting position, but may be configured to include, for example: after contacting the projected fabric portion W2c, the projected fabric portion W2c is actively pushed back to a position upstream of the cutting position of the tape cutting device 3 in the sewing direction Y by moving the projected fabric portion W2c in the upstream side of the sewing direction Y, thereby avoiding the cutting position, or the projected fabric portion W2c is grasped and moved from the cutting position to the side of the cutting action region of the tape cutting device 3 in the upper direction or the direction orthogonal to the sewing direction Y, thereby locally avoiding the cutting position.
In the above embodiment, the fabric conveying belt 7 is a circular belt having a circular cross section, but the present invention is not limited thereto, and a flat belt or a plurality of narrow belts may be used.
Claims (4)
1. A sewing machine for sewing a long strip-like article, comprising: a needle plate and a fabric slide plate for placing fabric and guiding the fabric to be conveyed in a predetermined sewing advancing direction; a sewing part including a needle falling part formed on the needle plate; a strip feeding device for feeding and supplying a long strip-shaped material so as to be overlapped with the side edge part of the fabric at an upstream side position of the sewing part in the sewing advancing direction; and a strip cutting device which is arranged at a position on a downstream side of the sewing advancing direction of the sewing part and cuts the long strip sewed on the lateral edge part of the fabric when passing through the sewing part along the width direction of the strip approximately orthogonal to the sewing advancing direction, the sewing machine for sewing the long strip is characterized by comprising a fabric stopping device,
the fabric stopping device comprises a fabric pressing rod and an air cylinder,
in a case where a long belt-like material is continuously fed and supplied by continuously sewing the side edge portions of a plurality of fabrics by the sewing portion while sequentially conveying the plurality of fabrics in a state where a part of the sewing start end portion of the following fabric is projected to the downstream side in the sewing proceeding direction of the sewing start end portion of the belt-like material by bringing the sewing end portion of the long belt-like material of the preceding fabric and the sewing start end portion of the following fabric closer to each other so as to secure a minimum interval necessary for cutting by the belt-like material cutting device, the fabric pressing lever is movable forward from the downstream side upper position in the sewing proceeding direction to the upstream side lower position in the sewing proceeding direction when the sewing end portion of the preceding fabric reaches a predetermined belt-like material cutting position, and the fabric pressing lever and the sewing start end portion of the following fabric are moved forward by the forward movement so as to project to the downstream side in the sewing proceeding direction of the sewing portion of the long belt-like material The protruding fabric portion is pushed back to the upstream side in the sewing direction of travel from the belt-like object cutting position by abutting against the fabric portion, the cylinder drives the fabric pressing rod to move forward and backward between the upstream side upper position in the sewing direction of travel and the upstream side lower position in the sewing direction of travel,
an anti-slip rubber for abutting against a protruding fabric portion of the following fabric is attached to the top end portion of the fabric pressing bar of the fabric stopper,
the fabric stopping device can make the protruding fabric part partially avoid the belt cutting position of the belt cutting device or stop the protruding fabric part at the upstream side of the belt cutting position in the sewing advancing direction.
2. The sewing machine for sewing a long strip-like article according to claim 1, wherein:
the fabric stopping device is arranged at a position closer to the inner side of the sewing machine frame than a pressing seat which supports a fabric presser foot for pressing the fabric placed on the needle plate to the needle plate.
3. The sewing machine for sewing a long strip-like article according to claim 1, wherein:
a fabric conveyor is disposed above the fabric slide plate on the downstream side of the cutting position of the strip-shaped object cutting device in the sewing advancing direction, and the fabric moved between the fabric conveyor and the fabric slide plate can be forcibly transferred in the sewing advancing direction.
4. The sewing machine for sewing a long strip-like article according to claim 3, wherein:
the leading end portion of the air ejector is disposed upstream in the sewing direction of travel from the cutting position of the web cutting device, and the protruding fabric portion is assisted in moving between the fabric conveyor and the fabric slide by ejecting air to the protruding fabric portion of the succeeding fabric that is stopped by the fabric stopper at the upstream in the sewing direction of travel after the web cutting device cuts the fabric.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016158169A JP6913846B2 (en) | 2016-07-25 | 2016-07-25 | Sewing machine for sewing long strips |
| JP2016-158169 | 2016-07-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107653580A CN107653580A (en) | 2018-02-02 |
| CN107653580B true CN107653580B (en) | 2021-07-16 |
Family
ID=61079033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710601538.1A Active CN107653580B (en) | 2016-07-25 | 2017-07-21 | Sewing machine for sewing long strip-shaped object |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6913846B2 (en) |
| CN (1) | CN107653580B (en) |
| TW (1) | TW201812132A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108754896A (en) * | 2018-08-15 | 2018-11-06 | 常州智谷机电科技有限公司 | Shear |
| US11525199B2 (en) | 2019-12-17 | 2022-12-13 | Singer Sourcing Limited Llc | Accessory for sewing machine and methods of using the same |
| US11519113B2 (en) | 2020-04-08 | 2022-12-06 | Singer Sourcing Limited Llc | Embroidery accessory with interchangeable guide |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53111845A (en) * | 1977-02-18 | 1978-09-29 | Gunze Kk | Method of and device for cutting and stitching tape cloth |
| JPS58106075U (en) * | 1982-01-13 | 1983-07-19 | ペガサスミシン製造株式会社 | Sewing machine shoulder joint tape cutting device |
| JPH0557078A (en) * | 1991-08-30 | 1993-03-09 | Pegasus Sewing Mach Mfg Co Ltd | Stacker for sewed product |
| JP4769505B2 (en) * | 2005-07-27 | 2011-09-07 | Ｊｕｋｉ株式会社 | Sewing sewing machine |
| JP5212935B2 (en) * | 2008-02-22 | 2013-06-19 | ヤマトミシン製造株式会社 | How to sew strips |
| WO2013051629A1 (en) * | 2011-10-04 | 2013-04-11 | Juki株式会社 | Device for feeding tape and device for sewing on tape |
| JP5477727B2 (en) * | 2012-06-14 | 2014-04-23 | ヤマトミシン製造株式会社 | Sewing machine with button |
| JP5967540B2 (en) * | 2012-09-18 | 2016-08-10 | ヤマトミシン製造株式会社 | Hem stitch machine |
-
2016
- 2016-07-25 JP JP2016158169A patent/JP6913846B2/en active Active
-
2017
- 2017-07-12 TW TW106123277A patent/TW201812132A/en unknown
- 2017-07-21 CN CN201710601538.1A patent/CN107653580B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP6913846B2 (en) | 2021-08-04 |
| CN107653580A (en) | 2018-02-02 |
| TW201812132A (en) | 2018-04-01 |
| JP2018015509A (en) | 2018-02-01 |
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