JP7043016B2 - Clothing seam expansion device - Google Patents

Description

The present invention relates to the above two pieces of clothing such as sportswear, spats, panty stockings, tights, nightwear, etc., in which shrinkage stitches are formed by overlock stitching of two overlapping fabric portions. When the fabric portion is unfolded on both sides in the direction orthogonal to the longitudinal direction of the stitch, the sewn in the contracted state is expanded so that the end edges of the two unfolded fabric portions are in the butt stitch state. With respect to the garment seam expansion device used for.

Taking the sportswear SW shown in FIG. 11 as an example of the target clothing, the sportswear SW uses an overlock sewing machine at the locations indicated by the arrows a, b, c, d, e, and f in FIG. It is produced by performing overlock stitching so that the stitch S classified into the JIS notation symbol class 500 is formed along the fabric traveling direction Y (see FIG. 13). Of the JIS notation symbol class 500, for example, the structure of the stitch S classified into the JIS notation symbol 505 composed of a total of three threads including one needle thread NT and two upper and lower looper threads ULT and LLT. As shown in FIG. 12, by unfolding the upper fabric portion UW and the lower fabric portion LW, which overlapped vertically at the time of over-edge sewing, in a direction orthogonal to the longitudinal direction of the stitch, for example, left and right. The edge UWe and LWe of the left and right fabric portions UW and LW are in the butt stitching state as shown in FIGS. 13 and 14.

As described above, by adopting a stitch structure in which the left and right fabric portions UW, LW edge edges UWe, LWe are butt-stitched and unfolded to the left and right after overlock stitching, the stitch portion is formed on the back surface of the garment in contact with the skin. It is possible to sew the fabric part smoothly to enhance the wearing feeling without protruding, and it is possible to obtain aesthetically pleasing clothing without exposing the edge of the fabric part to the surface of the clothing. Is.

By the way, when the target clothing uses a fabric material having high elasticity and elasticity such as the above-mentioned sportswear and pantyhose, a high elongation thread such as a woolly thread is used as a needle thread and a looper thread. Often. Therefore, the stitches classified into JIS notation symbol class 505 formed by overlock stitching are strongly contracted under the influence of the elasticity and elasticity of the fabric part and the high elongation of the needle thread and looper thread. In order to expand the fabric portion sewn over the edge to the left and right of the stitch and expand the stitch so that the edge edges of the left and right fabric portions are in the butt stitch state shown in FIGS. 13 and 14, the strong shrinkage is performed. A strong tensile force is required to counteract the contraction force of the stitch in the state.

Conventionally, since there is no dedicated device for expanding a seam in a strongly contracted state as described above over the entire length in the longitudinal direction, the work of expanding the seam is entirely left to human hands. Therefore, in order to expand the stitches, it is necessary to firmly grasp the two fabric parts with both hands and apply strong tensile force in both directions orthogonal to the longitudinal direction of the stitches, resulting in enormous work labor (human power). Requires. In addition, when stitches are formed in a plurality of places of one garment, or when the length of the stitches is very long, a great deal of labor and labor is required to expand all of the plurality or long stitches. It will take a long time. As a result, there is a problem that the productivity of a predetermined garment is liable to be lowered, and it is difficult to obtain a garment having a good wearing feeling and a good finish by expanding the stitches to look good over the entire length.

The present invention has been made in view of the above-mentioned circumstances, and the stitches can be reliably formed over the entire length of the stitches by taking the minimum amount of labor and time without requiring a particularly large work effort after the overlock stitching. In addition, the fabric can be expanded without damaging it by applying extra friction or excessive force, and the stitch expansion work can be performed very smoothly and efficiently, giving a feeling of wearing. It is an object of the present invention to provide a garment seam expanding device that can contribute to improving the productivity of garments with a good finish.

In order to achieve the above object, the garment seam expanding device according to the present invention has the two fabric portions in a garment in which a contracted seam is formed by overlock stitching of two overlapping fabric portions. The two pieces of fabric are fed while guiding the sewn in the contracted state to move along the longitudinal direction of the sewn in a state of being unfolded on both sides in a direction orthogonal to the longitudinal direction of the sewn. Hold the fabric portion feed portion with the seam movement guide groove and the two fabric portions fed from the fabric portion feed portion in a state where the seam is guided along the seam movement guide groove. The two fabric portions are forcibly transferred toward the longitudinal direction of the stitch, and are arranged so that the distance between the facing portions gradually increases toward the end portion in the transfer direction, and at least between the facing portions of the end portions in the transfer direction. A pair of fabric part forced transfer devices configured so that the distance can be changed, and two fabrics developed when the two fabric parts in the garment are transferred by the pair of fabric part forced transfer devices. A garment sewing expansion device that expands the garment's stitches in a contracted state so that the end edges of the portions are in a butt state, and the pair is located at a position following the transfer end portion of the pair of fabric portion forced transfer devices. A detector that detects whether or not the transfer direction tip portion and the transfer direction end portion of the garment whose stitches have been expanded by the fabric portion forced transfer device are sent from the pair of fabric portion forced transfer devices, and the pair of fabrics. The first state in which the clothes are forcibly discharged and transferred in the longitudinal direction of the seam in contact with the clothes discharged from the forced transfer device and the clothes are not forcibly discharged and transferred away from the clothes. A forced discharge transfer device for the garment with expanded stitches that can be switched to the second state is provided, and the forced discharge is performed according to the operation in which the detector detects the tip of the garment with expanded stitches in the transfer direction. The transfer device is configured to switch from the second state to the first state to forcibly discharge and transfer the stitch-expanded garment in the longitudinal direction of the stitch, and the detector has the stitch expanded. The forced discharge transfer device is switched from the first state to the second state according to the operation of detecting the end portion in the transfer direction of the clothes, and the operation after the switching causes the facing transfer surface of the pair of cloth portion forced transfer devices. It is characterized in that it is possible to form a gap portion for extracting the garment with expanded stitches to the upstream side of the fabric portion feeding portion.

According to the garment stitch expansion device according to the present invention having the above-mentioned characteristics, the two fabric portions in which the stitch is formed by the overlock stitch are placed on both sides in the direction orthogonal to the longitudinal direction of the stitch. By feeding and setting the two fabric parts in the unfolded state to the fabric part feeding portion so that the stitches in the contracted state fit into the stitch movement guide groove and are guided along the movement guide groove, the two fabric portions are set. The fabric portions of the sheets are sandwiched and held by the pair of fabric portions transfer devices and forcibly transferred in the longitudinal direction of the stitches. At the time of this forced transfer, the distance between the pair of fabric parts forcibly transferred devices is gradually increased. Therefore, as the forced transfer progresses, the two fabric parts are in a direction orthogonal to the longitudinal direction of the stitch. A tensile force is applied to the stitches, which can be mechanically and automatically expanded. Therefore, it takes only the minimum amount of time and effort to unfold the two fabric parts after over-edge stitching and set them in the fabric part feed part, and also firmly grasp the two fabric parts with both hands to make a stitch. The seam is surely and efficiently expanded over the entire length without the need for labor such as applying strong pulling manpower in both directions orthogonal to the longitudinal direction of the fabric, and the fabric part has a smooth back surface that is highly comfortable to wear. And garments with an aesthetically pleasing surface can be obtained.

Moreover, the distance between the pair of fabric portions is gradually increased toward the end portion in the transfer direction, and the two fabric portions are connected while forcibly transferring the two fabric portions after the overlock stitch. Since a tensile force orthogonal to the longitudinal direction of the seam can be applied, for example, the pulling force is applied by sliding the fabric portion including the seam along a gradient cam during forced transfer. The pulling force is applied by the fixed expansion device of the above and the drive rotating body that sequentially scrapes the fabric part including the seams that are forcibly transferred and rotationally transfers the scraped fabric part to one of the front and back directions of the fabric part. Compared to the case of using the rotary scraping type expansion device of the type to be applied, since no extra friction or excessive force is applied to the fabric, the fabric is not scratched or locally torn, and the finish is good. The stitch can be expanded.

In addition, at a location downstream in the transfer direction of the pair of fabric portion forced transfer devices, the tip portion of the clothing whose stitches have been expanded by the pair of fabric portion forced transfer devices is sent out from the pair of fabric portion forced transfer devices. The seam expanded that was in the second state away from the clothes according to the detection operation of the detector that detects the garment. The garment can be forcibly discharged and transferred in the longitudinal direction of the stitch following the pair of fabric portion forced transfer devices, so that the garment with expanded stitches can be transferred to the pair of fabric portion forced transfer devices. It is possible to avoid stagnation at a location downstream in the direction and hindering the subsequent transfer of clothing .

Further, the forced discharge transfer device for the seam-expanded clothing is switched from the first state to the second state according to the operation in which the detector detects the end portion of the seam-expanded clothing in the transfer direction, and By the operation after the switching, it is possible to form a gap portion for extracting the garment with expanded stitches to the upstream side of the fabric portion feeding portion between the facing transfer surfaces of the pair of fabric portion forced transfer devices. Even if the target garment is tubular garment, the garment whose stitches have been expanded is quickly pulled out to the upstream side of the fabric portion feeding portion through the gap portion as soon as possible without being transferred in the forced discharge direction , that is, the expansion device. It is possible to increase the efficiency of use of the expansion device, such as being able to remove it from the garment and start expanding the next garment at an early stage. Therefore, it is possible to carry out the stitch expansion work on a large number of clothes very smoothly and efficiently, and it is possible to achieve the effect of improving the productivity of clothes having a good wearing feeling and finish.

In the garment seam expanding device according to the present invention, the two pieces are fed between the seam movement guide grooved fabric portion feeding portion and the transfer starting end portion of the pair of fabric portion forced transfer devices. It is preferable that a rotating body for forced feeding is provided, which forcibly feeds the dough portion to the transfer start end portion of the pair of dough portion forced transfer devices.
In this case, simply by setting the tips of the two fabrics developed on both sides after overlock stitching in the fabric feed section, the two fabrics can be transferred to the transfer start end of the pair of fabric section forced transfer devices. Since it can be automatically sent to the fabric, the setting work of the fabric part can be done more easily.

In the garment seam expanding device according to the present invention, the pair of fabric portion transfer devices are composed of a set of transfer devices arranged so that the transfer surfaces face each other, and each of these sets of transfer devices is configured. It is composed of a set of endless belts arranged with the transfer surfaces facing each other, one of which is interlocked with a drive motor to form a drive rotation type, and the other endless belt is a driven rotation type. It is preferable that it is configured in.
In this case, after overlock stitching, the two fabric portions developed on both sides of the stitch are sandwiched and held between the opposing transfer surfaces of a set of endless belts, which are a set of transfer devices, and transferred. Therefore, it is possible to forcibly and evenly transfer the two fabric portions in a predetermined direction, and it is possible to obtain a garment with a better finish. In addition, after overlock stitching, two fabric portions developed on both sides of the stitch are sandwiched between a pair of endless belts arranged so as to face each other, and the other endless belt is driven by the drive rotation of the other endless belt. Since the belt is forcibly transferred while being driven and rotated, almost no transfer resistance is applied to the two fabric parts, and these two fabric parts are smoothly forcibly transferred to provide a predetermined stitch expansion function. It is possible to exert it reliably and smoothly.

Further, in the garment seam expanding device according to the present invention, the one endless belt, which is interlocked with the drive motor and is configured in a drive rotary manner, has the detector at the end portion of the garment whose seam has been expanded in the transfer direction. By an artificial operation after the operation that detects It is preferable that the structure is such that a gap for extraction to the side can be formed.
In this case, an artificial operation after the detection operation of the transfer direction end portion of the garment whose stitch has been expanded by the detector, for example, a drive stop operation of an operation pedal that controls the drive start and drive stop of the drive motor (generally a step-back operation). Because it is possible to separate one endless belt of the drive rotation type from the other endless belt of the driven rotation type and form a gap between the opposite transfers of both endless belts, the target clothing is a cylinder. Even in the case of the shaped garment, the tubular garment with expanded stitches can be quickly pulled out to the upstream side of the fabric portion feeding portion.

Further, in the garment seam expanding device according to the present invention, the seam-expanded garment forced discharge transfer device has a plurality of rows of circular endless cross sections arranged side by side in a direction orthogonal to the longitudinal direction of the seam. It is preferable that these plurality of circular endless belts having a cross section, which are composed of belts, are interlocked and connected to the drive motor of the pair of fabric portion forced transfer devices.
In this case, since the contact of the forced discharge transfer device with the garment whose stitches have been expanded can be a plurality of line contacts, the forced discharge transfer device and the pair of fabric portion forced transfer devices have some contact with each other. Even if there is a difference in transfer speed, the speed difference can be absorbed by slipping at the line contact portion, and no extra force is applied to the clothes. Further, by using the drive motor of the seam-expanded clothing forced discharge transfer device and the pair of fabric portion forced transfer devices in combination, the configuration of the drive system of the device as a whole can be simplified.

Further, in the garment seam expanding device according to the present invention, the circular endless belt having a circular cross section includes a pulley located at the starting end of forced discharge and transfer of the garment whose seam has been expanded, a pulley that passively receives driving force from the drive motor, and the above. It is wound over a plurality of pulleys including an idle pulley that contacts the outer peripheral portion of the circular endless belt, and these plurality of pulleys are wound from the second state according to the detection operation of the detector. The circular endless belt with a cross section does not come off when the detector is switched to the first state and when the detector is switched from the first state to the second state according to the operation of detecting the end portion of the garment whose stitch has been expanded in the transfer direction. It is preferable that it is supported by a link mechanism that bends like this.
In this case, when the circular endless belt having a circular cross section constituting the forced discharge transfer device for the expanded garment is switched from the second state to the first state according to the detection operation of the detector, and from the first state to the second state. In any case of switching to the state, it is possible to avoid the occurrence of troubles such as the circular endless belt having a circular cross section coming off from the plurality of pulleys due to the bending operation of the link mechanism.

Further, in the garment stitch expanding device according to the present invention, it is preferable that the stitch formed by the overlock stitch is classified into JIS notation symbol class 500.
In this case, the stitch formed by the overlock stitch is classified into JIS notation symbol class 500, and the tension of the needle thread such as JIS notation symbol 505 is low (or loose). If it is a seam, the above-mentioned seam expansion can be performed more reliably and stably.

It is a perspective view of the whole stitch expansion apparatus of clothing which concerns on embodiment of this invention. Same as above. It is an enlarged exploded perspective view of the main part of the seam expansion device of clothing. Same as above. It is an enlarged exploded perspective view of the main part of the seam expansion device of clothing. Same as above. It is an enlarged exploded perspective view of the main part of the seam expansion device of clothing. It is an enlarged plan view of the main part of the seam expansion device of the same as above. It is a vertical sectional view along the line AA of FIG. Same as above. It is an enlarged side view of a main part which shows the state at the time of starting the transfer of the garment by the garment seam expansion device. Same as above It is an enlarged side view of a main part which shows the state in the process of transferring clothing by the clothing stitch expansion device. Same as above It is an enlarged side view of a main part which shows the state after the garment which has been sewn expanded is taken out from the garment expansion device. It is a schematic operation diagram of the link mechanism for preventing the detachment of the endless belt with a circular cross section constituting the forced discharge device of the expanded garment in the garment seam expansion device of the same as above. It is a perspective view of sportswear as an example of the garment in which the seam which is classified into the JIS notation symbol class 500 is formed by the overlock stitch. It is an enlarged perspective view of the main part which shows the structure of the stitch which is classified in JIS notation symbol 505. It is an enlarged plan view of the main part which looked at the structure of the stitch when the cloth part which was sewn over the edge was unfolded to the left and right of the stitch from the cloth surface side. It is an enlarged plan view of the main part which looked at the structure of the stitch when the cloth part which was sewn over the edge was unfolded to the left and right of the stitch from the back side of the cloth.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a perspective view of the entire garment seam expanding device according to the embodiment of the present invention, FIGS. 2 to 4 are enlarged exploded perspective views of a main part of the garment seam expanding device, and FIG. 5 is the same garment. An enlarged plan view of a main part of the seam expanding device, FIG. 6 is a vertical cross-sectional view taken along line AA of FIG. 5, and FIGS. It is an enlarged side view of a main part which shows the state in the process of transfer, and the state after the garment with expanded stitches is taken out.

The clothing stitch expansion device M is a frame frame 2 having an inverted U-shaped side view fixedly installed on a horizontal base 1 in a substantially vertical position, and a lower horizontal frame portion 2L of the frame frame 2. At the fabric portion feeding portion 4 arranged at the front portion of the lower block 10 fixed to the upper surface of the front half portion of the support base 8 fixed by the screw 13 near the front end portion via the screw 9, and at the rear portion of the lower block 10. The seam S of the seam S in the garment after being arranged and overhauled to form a seam S (see FIG. 12) classified in JIS notation class 505 using an overlock sewing machine. The two left and right fabric portions UW and LW developed on both sides in the direction orthogonal to the longitudinal direction, that is, the left and right sides in the horizontal plane, are sandwiched and held from above and below, and an arrow is directed toward the longitudinal direction of the seam S. A pair of left and right fabric section forced transfer devices 3L, 3R (see FIG. 6) that are forcibly transferred in the YL and YR directions (see FIG. 5), the fabric section feeding section 4 and the left and right pair of fabric section forced transfer devices 3L, 3R. The fabric portions UW and LW, which are disposed between the transfer start end portion and are fed to the fabric portion feeding portion 4, are forcibly forced to the transfer start ends of the pair of left and right fabric portion forced transfer devices 3L and 3R. It is equipped with two left and right rollers 12L and 12R as lower rotating bodies for forced feeding.

The dough feeding portion 4 is composed of a pair of left and right guide pieces 4L and 4R fixed to the front surface of the lower block 10 by screws 11 and 11, and is in the contracted state between the pair of left and right guide pieces 4L and 4R. A stitch movement guide groove 4S is formed in which a stitch S is dropped and the stitch S is guided so as to move along the longitudinal direction thereof. Further, as clearly shown in FIGS. 3 and 5, the two left and right rollers 12L and 12R are fitted into the concave grooves 14L and 14R formed on the upper surface portion of the lower block 10 and the shaft 15 is fitted. It is supported so that it can rotate freely around.

As shown in FIGS. 1 to 6, the pair of left and right cloth portion forced transfer devices 3L and 3R are a pair of upper and lower endless transfer devices arranged with the transfer surfaces facing each other vertically. The belt is composed of 3LU, 3LL, 3RU, and 3RL. As shown most clearly in FIG. 5, the pair of upper and lower endless belts 3LU, 3LL, 3RU, and 3RL are made of the above-mentioned fabric so that the distance between the facing ends gradually increases toward the end of each transfer direction YL, YR. The portion feeding portion 4 is inclined evenly to the left and right with respect to the extension line of the stitch movement guide groove 4S, and is arranged in a substantially inverted C shape in a plan view.

Of the pair of upper and lower endless belts 3LU, 3LL, 3RU, and 3RL, the upper endless belts 3LU and 3RU are appropriately spaced from the upper mounting bases 15LU and 15RU in the fabric portion transfer direction, respectively, as shown in FIG. The lower endless belts 3LL and 3RL are wound around a plurality of (actually two) toothed pulleys 16LU and 16RU axially supported by the lower endless belts 3LL and 3RL, respectively, as shown in FIG. It is wound around a plurality of (actually two) toothed pulleys 16LL and 16RL that are pivotally supported on the mounting bases 15LL and 15RL at appropriate intervals in the fabric portion transfer direction. The fabric portion forced transfer devices 3L and 3R configured as described above deploy the two left and right fabric portions UW and LW of the garment sewn over the edges on both sides in the direction orthogonal to the longitudinal direction of the stitch S. In this state, the two left and right fabric portions UW and LW are sandwiched and held from above and below, and the two left and right fabric portions UW and LW are forcibly transferred toward the YL and YR directions.

To the toothed pulley 18 pivotally supported by the intermediate mounting base 17 arranged at the upper position of the upper endless belts 3LU, 3RU and the two left and right rollers 12L, 12R in the pair of left and right dough part forced transfer devices 3L, 3R. The endless belt 19 as the upper rotating body for forced feeding that is wound is interlocked and connected to the drive motor 20 fixedly supported by the intermediate vertical frame portion 2M of the frame frame 2 via the relay transmission belt 21 for drive rotation. On the other hand, the lower endless belts 3LL and 3RL are non-driven, and when the fabric portion is sandwiched and held between the upper endless belts 3LU and 3RU and transferred, the transfer surfaces are directed in the same direction. It is configured as a driven rotation type that moves.

Of the pair of left and right dough forced transfer devices 3L and 3R, the upper mounting bases 15LU and 15RU that rotatably support the toothed pulleys 16LU and 16RU around which the upper endless belts 3LU and 3RU are wound are clearly shown in FIG. As shown above, the intermediate block 24 serving as a fixing portion is rotatably supported around the vertical axis via the upper guide pins 25LU and 25RU, and is screwed to the left and right side surface portions of the intermediate block 24. It is configured so that it can be fixed at an arbitrary rotation position via screws 26LU and 26RU.

On the other hand, as shown in FIG. 4, the lower mounting bases 15LL and 15RL that rotatably support the toothed pulleys 16LL and 16RL around which the lower endless belts 3LL and 3RL are wound are the lower blocks serving as fixing portions. It is rotatably supported by the lower guide pins 25LL and 25RL around the vertical axis, and at any rotation position via the screws 26LL and 26RL screwed on the left and right side surfaces of the lower block 10. It is configured to be fixed.

The upper guide pins 25LU, 25RU and the lower guide pins 25LL, 25RL are arranged near the central portion of the forced transfer path by the pair of left and right fabric portion forced transfer devices 3L, 3R, respectively, and the upper mounting bases 15LU, 15RU and By rotating the lower mounting bases 15LL and 15RL around the upper and lower axis of each of the upper guide pins 25LU and 25RU and the lower guide pins 25LL and 25RL and fixing them at arbitrary rotation positions, a pair of upper and lower endless belts 3LU, 3LL and 3RU, The distance between the facing ends of the 3RL transfer direction ends can be changed.

The bracket 29 that pivotally supports the intermediate block 24, the endless belts 3LU and 3RU, and the pulley with upper teeth for winding each of the endless belts 19 as the upper rotating body for forced feeding (part number omitted) is on the upper side of the frame frame 2. The elevating plate member 30 is fixed to the elevating plate member 30 which is supported up and down along the vertical slide rail 27 fixed to the front end of the horizontal frame portion 2U, and the elevating plate member 30 is fixed along the slide rail 27 by the cylinder 28. By driving up and down, the endless belt 19 for forced feeding is brought close to the two left and right rollers 12L and 12R, and the two left and right fabric portions are forcibly fed rearward, and the upper endless belts 3LU and 3RU are forcibly fed. A state in which each transfer surface is brought close to each transfer surface of the lower endless belts 3LL and 3RL to sandwich and hold the two left and right fabric portions of the garment for forced transfer, and the left and right two endless belts 19 for forced feeding. The upper endless belts 3LU and 3RU are separated upward from the upper endless belts 3LU and 3RU, and the upper endless belts 3LU and 3RU are separated upward from the lower endless belts 3LL and 3RL. By forming the gap 44 between the opposite transfer surfaces of the lower endless belts 3LL and 3RL, even if the garment is tubular, the tubular garment after the stitches are expanded can be pulled out to the upstream side of the fabric feeding portion 4. It is configured to be freely switchable between the state and the state.

A toothed idle pulley 31 is arranged in the middle portion of the forced feed endless belt 19, and the toothed idle pulley 31 is rotatably supported by an idler block 32 fixed to the intermediate block 24. ..

Further, the two left and right rollers 12L and 12R as the lower rotating body for forced feeding are pivotally supported in the concave grooves 14L and 14R on the upper surface of the lower block 10 so as to be freely rotatable, and the endless for forced feeding is endless. The belt 19 is lowered to force the clothes to be fed in a state of being close to the upper peripheral surfaces of the rollers 12L and 12R. At this time, the rollers 12L and 12R are configured to be driven to rotate in synchronization with the endless belt 19. Has been done.

At the location following the transfer end of the pair of left and right fabric section forced transfer devices 3L, 3R, the tip portion of the clothing SW whose stitch S is expanded by the pair of left and right fabric section forced transfer devices 3L, 3R is located. The detector 40 that detects whether or not the cloth is sent out from the pair of left and right fabric section forced transfer devices 3L, 3R, and the clothing SW with expanded stitches discharged from the pair of left and right fabric section forced transfer devices 3L, 3R. There is provided a forced discharge transfer device 35 for the stitch-expanded clothing, which continuously forcibly discharges and transfers the stitch S toward the longitudinal direction.

As shown in FIG. 1, the seam-extended garment forced discharge transfer device 35 has a plurality of rows arranged side by side in the left-right direction orthogonal to the longitudinal direction of the stitch, specifically, two strips having no circular cross section. It is composed of belts 35L and 35R. These two cross-section circular endless belts 35L, 35R are two pulleys 37a, 37b, which are arranged at two places spaced apart from each other in the forced discharge transfer direction Z of the seam-expanded garment and are supported by the elevating table 36. It is arranged above the pulleys 37c and the two pulleys 37a and 37b, which are interlocked and connected to the drive motor 20 via a relay transmission belt 22 and fixed to an intermediate shaft 38 that passively transfers the driving force from the drive motor 20. It is wound endlessly rotatably between idle pulleys 37d that come into contact with the outer peripheral portions of the circular endless belts 35L and 35R.

The two endless belt portions located substantially horizontally between the two pulleys 37a and 37b supported by the elevating table 36 form a substantially forced discharge transfer portion 35A in the forced discharge transfer device 35 for the seam-expanded clothing. The forced discharge transfer unit 35A faces the discharge transfer guide surface 2La of the garment with expanded stitches formed of the upper surface of the lower horizontal frame portion 2L of the frame frame 2.

The elevating table 36 is configured to be driven up and down by a cylinder 41 attached to the front portion of the upper horizontal frame portion 2U of the frame frame 2. The cylinder 41 is expanded and contracted according to the detection operation of the detector 40, and the elevating table 36 is driven and raised and lowered according to the expansion and contraction of the cylinder 41, substantially in the forced discharge transfer device 35 for the seam-expanded clothing. The forced discharge transfer unit 35A is configured to approach and separate from the discharge transfer guide surface 2La.

Specifically, FIG. 8 shows that the cylinder 41 is extended and the elevating table 36 is driven and lowered in response to the operation in which the detector 40 detects the tip of the garment whose stitches have been expanded in the transfer direction. As described above, the substantial forced discharge transfer unit 35A in the seam expanded clothing forced discharge transfer device 35 is discharged from the pair of left and right fabric portion forced transfer devices 3L, 3R onto the discharge transfer guide surface 2La. The first state in which the clothing SW is in contact with the upper surface of the stitch-expanded garment SW and the garment SW is forcibly discharged and transferred in the forced discharge transfer direction Z which is the longitudinal direction of the stitch, and the detector 40 is the stitch expansion. As shown in FIG. 9, the cylinder 41 is contracted and the elevating table 36 is driven and raised in response to the operation of detecting the end portion in the transfer direction of the finished garment, so that the seam-expanded garment is forcibly discharged and transferred. The substantially forced discharge transfer unit 35A in the device 35 is configured to be automatically switched to a second state in which the clothing SW is separated upward from the seam-expanded clothing SW and the clothing SW is not forcibly discharged and transferred. ing.

Further, of the four pulleys 37a to 37d around which the two-row circular endless belts 35L and 35R constituting the seam-expanded clothing forced discharge transfer device 35 are wound endlessly, the elevating table 36 is used. The two pulleys 37a and 37b and the idle pulley 37d supported in the above switch from the second state to the first state according to the operation in which the detector 40 detects the start end portion of the seam-expanded clothing SW in the transfer direction. The circular endless belts 35L and 35R have a cross section that does not come off when the detector 40 is switched from the first state to the second state according to the operation of detecting the end portion of the stitch-expanded clothing SW in the transfer direction. It is supported by the link mechanism 42 that bends in this way.

As shown in the schematic operation diagram of FIG. 10, the link mechanism 42 has one waist-folding link 42a that can swing around the fulcrum P1 and around the fulcrums P2 and P3 arranged vertically below the fulcrum P1. It has two parallel quadruple links 42b and 42c that can swing up and down, and the play of the extension link portion 42b1 diagonally upward from the fulcrum P2 of one of the two links 42b and 42c. The end portion and the free end portion of the waist bending link 42a are pivotally connected to each other. A pulley support piece 43 that rotatably supports the idle pulley 37d is attached to a part of the waist-folding link 42a of the link mechanism 42, and the free end portions of the two parallel quadruple links 42b and 42c. The space is connected by the lift 36.

Although not shown, the clothing stitch expansion device M of the present embodiment is provided with a start switch and a foot pedal that turn on / off the operation of the device M, and the start switch is turned on. By stepping back on the foot pedal, the upper endless belts 3LU, 3RU in the pair of left and right fabric part forced transfer devices 3L, 3R and the substantial forced discharge transfer unit 35A in the seam expanded clothing forced discharge transfer device 35 are released. Both will be raised. By operating the foot pedal to the neutral position in this state, the upper endless belts 3LU and 3RU in the pair of left and right dough portion forced transfer devices 3L and 3R are lowered. Further, by depressing the foot pedal from this state, the drive motor 20 is activated to forcibly discharge the upper endless belts 3LU, 3RU and the seam-expanded clothing in the pair of left and right fabric portion forced transfer devices 3L, 3R. The two-row circular endless belts 35L and 35R in the transfer device 35 are configured to start rotating at the same time.

Next, in FIG. 12, FIG. The operation of expanding each stitch S in the clothing SW in which the stitch S in the contracted state as shown is formed, for example, the sportswear shown in FIG. 11 will be described.

First, by depressing the foot pedal with the start switch turned on, as shown in FIG. 9, the upper endless belts 3LU, 3RU and the stitches of the pair of left and right fabric part forced transfer devices 3L, 3R have been expanded. The substantially forced discharge transfer unit 35A in the forced discharge transfer device 35 for clothing is raised together. At this time, the upper endless belts 3LU, 3RU in the pair of left and right fabric portion forced transfer devices 3L, 3R and the two-row circular endless belts 35L, 35R in the seam-expanded clothing forced discharge transfer device 35 stopped rotating. There is up to.

Next, by operating the foot pedal to the neutral position, as shown in FIG. 7, the upper endless belts 3LU, 3RU in the pair of left and right fabric portion forced transfer devices 3L, 3R are lowered, and the upper endless belts 3LU, 3RU are lowered. Each transfer surface of the belts 3LU and 3RU approaches each transfer surface of the lower endless belts 3LL and 3RL, sandwiches and holds the two left and right fabric portions of the garment, and is in a state of forced transfer.

Subsequently, by depressing the foot pedal, the drive motor 20 is activated to operate the upper endless belts 3LU, 3RU in the pair of left and right fabric portion forced transfer devices 3L, 3R and the seam expanded clothing forced discharge transfer device. The two-row circular endless belts 35L and 35R in 35 are simultaneously started to rotate.

In this state, in the fabric part of clothing SW such as sportswear on which the seam S classified in JIS notation symbol class 505 is formed, the upper and lower two fabric parts UW which were overlapped on the upper and lower sides at the time of forming the seam. , LW is expanded on both the left and right sides of the seam S, and the contracted seam S fits into the seam movement guide groove 4S and is moved and guided along the movement guide groove 4S to the fabric portion feeding portion 4. set.

Then, the fabric portions UW and LW developed on both the left and right sides are forcibly transferred via the forced feed endless belt 19 and the two rollers 12L and 12R, and the pair of left and right fabric portions are forced from the tip of the fabric portion. As shown in FIG. 6, after being fed between the facing transfer surfaces of the pair of upper and lower endless belts 3LU, 3LL, 3RU, and 3RL in the transfer devices 3L and 3R and held by being sandwiched, the left and right fabric portions UW and LW are left and right. It is forcibly transferred in the directions of the arrows YL and YR by the pair of cloth portion forced transfer devices 3L and 3R, respectively.

During this forced transfer, the distance between the pair of fabric section forced transfer devices 3L and 3R facing each other gradually increases. A tensile force is applied in the directions orthogonal to each other, and the stitch S is automatically and continuously expanded in sequence. After passing through the pair of left and right fabric section forced transfer devices 3L and 3R, two left and right stitches are applied. The end edges UWe and LWe of the fabric parts UW and LW are in a butt-sewn state as shown in FIGS. It will be finished.

As described above, the tip portions in the transfer direction of the two left and right fabric portions UW and LW (clothes SW such as sportswear) having the expanded stitch S are from the pair of left and right fabric portion forced transfer devices 3L and 3R. When it is sent out onto the discharge transfer guide surface 2La, the detector 40 detects the tip portion thereof, and the cylinder 41 expands according to the detection operation to drive and lower the elevating table 36, so that FIG. 8 shows. As shown, the substantial forced discharge transfer unit 35A in the seam expanded clothing forced discharge transfer device 35 was discharged from the pair of left and right fabric portion forced transfer devices 3L, 3R onto the discharge transfer guide surface 2La. The clothing SW is forcibly discharged and transferred in the forced discharge transfer direction Z, which is the longitudinal direction of the stitch S, in contact with the upper surface of the seam-expanded clothing SW.

Next, when the detector 40 detects the end portion of the seam-expanded clothing SW in the transfer direction, the cylinder 41 contracts and the elevating table 36 is driven up according to the detection operation, and the seam is raised. While the substantially forced discharge transfer unit 35A in the expanded clothing forced discharge transfer device 35 is separated above the discharge transfer guide surface 2La, the drive motor 20 is subsequently operated by depressing the foot pedal. As the operation is stopped, as shown in FIG. 9, the elevating member 30 is driven and raised via the cylinder 28, and the transfer surfaces of the upper endless belts 3LU and 3RU are the lower endless belts 3LL and 3RL. A gap 44 is formed between the facing transfer surfaces of the upper endless belts 3LU and 3RU and the lower endless belts 3LL and 3RL separated upward from the transfer surface.

In the state of FIG. 9, even if the garment SW with expanded stitches is a tubular garment such as sportswear shown in FIG. 11, the tubular garment SW is passed through the gap 44 to the upstream side of the fabric portion feeding portion. By quickly extracting and then repeating the same action as described above, the stitch expansion work for a plurality of clothes is executed one after another.

As described above, in the garment stitch expanding device M according to the present embodiment, the fabric portion after the overlock stitch is expanded and set on both the left and right sides orthogonal to the longitudinal direction of the stitch S. The stitch S can be reliably and efficiently expanded over the entire length of the stitch S, and the fabric part feels comfortable to wear. It is possible to obtain clothing with a high smooth back surface and an aesthetically pleasing surface, and using a fabric material with high elasticity and elasticity such as sportswear SW and pantyhose, Woolly as needle thread and looper thread. Even for clothing in which the stitch S is in a strongly contracted state due to the fact that it is often manufactured using high elongation threads such as threads, the stitch S is automatically, reliably, quickly and uniformly. Can be expanded.

In particular, the distance between the pair of fabric portion transfer devices 3L and 3R facing each other is arranged so as to gradually increase toward the end portion in the transfer direction, and the two fabric portions UW and LW on the left and right after overlock stitching are forcibly transferred. Since a tensile force orthogonal to the longitudinal direction can be applied to the stitch S connecting the two fabric portions UW and LW without difficulty, for example, the fabric portion including the stitch S can be sloped cam during forced transfer. The fixed expansion device that applies the tensile force by sliding and moving along the line, and the fabric part including the seams that are forcibly transferred are sequentially scraped, and the scraped fabric portion is used for the fabric part. Compared to the case of using the rotary scraping type expansion device of the type that applies the tensile force by the drive rotating body that is rotationally transferred to one of the front and back directions, no extra friction or excessive force is applied to the fabric. It is possible to expand the stitches with a good finish without causing scratches or local tears on the fabric.

In addition, the upper mounting bases 15LU, 15RU and the lower mounting bases 15LL, 15RL are rotated around the vertical axis of each of the upper guide pins 25LU, 25RU and the lower guide pins 25LL, 25RL according to the degree of contraction of the stitch S. And, by fixing via screws 26LU, 26RU and screws 26LL, 26RL at an arbitrary rotation position, the distance between the facing ends of the pair of upper and lower endless belts 3LU, 3LL and 3RU, 3RL can be arbitrarily changed. It is possible to do. Therefore, fabric materials with high elasticity and elasticity such as sportswear and pantyhose are used, and high elongation threads such as woolly threads are used as needle threads and looper threads. Regardless of the degree of shrinkage of the eyes, the stitches can be reliably and appropriately expanded to produce a garment with a good finish.

Further, as in the present embodiment, the pair of upper and lower endless belts 3LU, as a pair of upper and lower transfer devices in which the pair of left and right cloth portion forced transfer devices 3L and 3R are arranged so that the transfer surfaces face each other vertically. When it is composed of 3LL, 3RU, and 3RL, the two fabric portions UW and LW developed on both the left and right sides are vertically opposed to each other as a pair of upper and lower endless belts 3LU, 3LL, 3RU, and 3RL, respectively. Since it is sandwiched between the surfaces and forcibly transferred, it is possible to forcibly transfer the two left and right fabric parts UW and LW in a predetermined direction reliably and evenly, and the stitch S is uniformly expanded to the left and right. , It is possible to obtain clothes with a better finish.

Further, as shown in the present embodiment, among the pair of upper and lower endless belts 3LU, 3LL, 3RU, 3RL constituting the pair of left and right dough portion forced transfer devices 3L, 3R, the upper endless belts 3LU, 3RU are used. While the lower endless belts 3LL and 3RL are non-driven and are transferred with the fabric portion sandwiched between the upper endless belts 3LU and 3RU, the lower endless belts 3LL and 3RL are interlocked with the drive motor 6 to form a drive rotation type. In the case of a driven rotation type in which the sewn parts move in the same direction, the two fabric parts UW and LW developed on both the left and right sides are sandwiched between a pair of endless belts arranged so as to face each other after the overlock stitch. In this state, the upper endless belts 3LU and 3RU are driven and rotated, and the lower endless belts 3LL and 3RL are forcibly transferred while being driven to rotate. It is possible to reliably and smoothly exert a predetermined stitch expansion function associated with forced transfer.

Further, as shown in the present embodiment, the clothing SW whose stitches are expanded by the pair of fabric portion forced transfer devices 3L, 3R is transferred to a location downstream in the transfer direction of the pair of fabric portion forced transfer devices 3L, 3R. Forced discharge of the garment with expanded stitches that was in the second state separated from the garment according to the detection operation of the detector 40 that detects that the directional tip portion was sent out from the pair of fabric portion forced transfer devices 3L, 3R. Substantial forced discharge of the transfer device 35 By switching the transfer unit 35A to the first state of contact with the clothing SW, the clothing SW whose stitches have been expanded is continuously discharged and transferred toward the longitudinal direction of the stitch. Therefore, it is possible to prevent the garment SW whose stitches have been expanded from staying at a location downstream in the transfer direction of the pair of fabric portion forced transfer devices 3L and 3R, which hinders the subsequent transfer of clothing. can. As a result, the stitch expansion work for a large number of clothes can be performed very smoothly and efficiently.

Further, as shown in the present embodiment, the forced discharge transfer device 35 for the seam-expanded clothing has the first operation according to the operation in which the detector 40 detects the end portion of the seam-expanded clothing SW in the transfer direction. Since the first state is automatically switched to the second state, the expansion device M can be used by removing the stitch-expanded clothing SW from the expansion device M as soon as possible and starting the expansion of the next clothing at an early stage. Efficiency can be increased.

Further, as shown in the present embodiment, the cross section of a plurality of rows (two rows) in which the forced discharge transfer device 35 for the seam-expanded clothing is arranged side by side in a direction orthogonal to the longitudinal direction of the seam S. The forced discharge transfer device 35 is composed of circular endless belts 35L and 35R, and these circular endless belts 35L and 35R are interlocked with the drive motors 20 of the pair of cloth portion forced transfer devices 3L and 3R. Since the contact with the clothing SW whose stitches have been expanded can be line contact, it is assumed that a slight transfer speed difference occurs between the forced discharge transfer device 35 and the pair of fabric portion forced transfer devices 3L and 3R. However, the speed difference can be absorbed by slipping at the line contact part, and no extra force is applied to the clothes. Further, by using the drive motor 20 for both purposes, it is possible to simplify the configuration of the drive system of the entire device.

Further, as shown in the present embodiment, the circular endless belts 35L and 35R have a driving force from two pulleys 37a and 37b located at the starting end of forced discharge transfer of the garment with expanded seams and the drive motor 20. The pulleys 37c and the idle pulleys 37d in contact with the outer peripheral portions of the circular endless belts 35L and 35R are wound around the passive pulleys 37c, and the pulleys 37a to 37d are the first in accordance with the detection operation of the detector 40. Both when switching from the two states to the first state and when switching from the first state to the second state, the endless belts 35L and 35R having a circular cross section are supported by a link mechanism 42 that bends so as not to come off. Therefore, it is possible to avoid the occurrence of troubles such as the circular endless belts 35L and 35R having a circular cross section coming off from the pulleys 7a to 37d, and to use the belts without maintenance.

Further, in the present embodiment, in order to gradually increase the distance between the facing ends of the pair of left and right dough part forced transfer devices 3L, 3R in the transfer direction, the pair of dough part forced transfer devices 3L, 3R are used. It is possible to rotate and fix the shaft around a shaft (guide pin) arranged near the center of the forced transfer path, but in addition to this, for example, the shaft is attached to the start end of the forced transfer path of the fabric section forced transfer devices 3L and 3R. It may be arranged further in front of the transfer direction than the start end portion. However, in the case of the configuration in which the shaft is arranged near the central portion of the forced transfer path as in the present embodiment, the rotation of the fabric portion forced transfer devices 3L and 3R around the axis is compared with the case of other configurations. It is possible to reduce the rate of change in the distance between facing each other, and it is possible to increase the adaptability of the extended function to the degree of shrinkage of the stitch.

Further, in the above-described embodiment, the transfer path of the fabric portion formed horizontally or substantially horizontally by the pair of left and right fabric portion forced transfer devices 3L and 3R has been described, but the transfer path of the fabric portion is vertical or substantially horizontal. It may be formed substantially vertically, or may be formed in a state of being inclined in the vertical direction.

3L, 3R Pair of fabric part forced transfer device 3LU, 3RU Upper endless belt 3LL, 3RL Lower endless belt 4 Fabric part feeding part 4S Seam movement guide groove 12L, 12R Roller (Rotating body for forced feeding)
20 Drive motor 35 Forced discharge transfer device for clothes with expanded seams 35L, 35R Circular cross-section endless belts 37a to 37d Pulley for winding endless cross-section belt 40 Detector 42 Link mechanism
44 Air gap M Clothing seam expansion device SW Clothing (sportswear)
UW, LW Left and right fabric parts S Seams YL, YR Forced transfer direction Z Forced discharge transfer direction

Claims (6)

In a garment in which shrinkage stitches are formed by overlock stitching of two overlapping fabric portions, the two fabric portions are unfolded on both sides in a direction orthogonal to the longitudinal direction of the stitches. A stitch movement guide grooved fabric portion feeding portion for feeding the two fabric portions while guiding the stitches in the contracted state to move along the longitudinal direction of the stitch,
With the stitch being guided along the stitch movement guide groove, the two fabric portions fed from the fabric portion feeding portion are sandwiched and held, and the two fabric portions are held by the length of the stitch. A pair of fabric parts that are forcibly transferred in the direction, arranged so that the distance between the facing ends gradually increases toward the end in the transfer direction, and at least the distance between the facing ends in the transfer direction can be changed. Equipped with a forced transfer device,
When the two fabric portions in the garment are transferred by the pair of fabric portion forced transfer devices, the garment that expands the sewn in the contracted state so that the end edges of the two developed fabric portions are in a butt state. It is a stitch expansion device of
At the location following the transfer end of the pair of fabric section forced transfer devices, the transfer direction tip and transfer direction end of the clothing whose stitches have been expanded by the pair of fabric section forced transfer devices are the pair of fabric sections. A detector that detects whether or not it was sent from the forced transfer device,
The first state in which the garment is forcibly discharged and transferred in the longitudinal direction of the stitch in contact with the garment discharged from the pair of fabric portion forced transfer devices and the garment is forcibly discharged away from the garment. A forced discharge transfer device for garments with expanded stitches that can be switched to the second state in which transfer is not performed is provided.
The forced discharge transfer device is switched from the second state to the first state according to the operation in which the detector detects the tip of the garment with expanded stitches in the transfer direction, and the garments with expanded stitches are transferred to the length of the stitch. The forced discharge transfer device is configured to be forcibly discharged and transferred in the direction, and the forced discharge transfer device is moved from the first state to the second state according to the operation in which the detector detects the end portion of the cloth with expanded stitches in the transfer direction. By switching to the state and operating after the switching, it is possible to form a gap portion for extracting the garment with expanded stitches to the upstream side of the fabric portion feeding portion between the facing transfer surfaces of the pair of fabric portion forced transfer devices. A garment seam expansion device characterized by being configured. The two pieces of fabric that are fed between the seam movement guide grooved fabric portion feeding portion and the transfer starting portion of the pair of fabric portion forced transfer devices of the pair of fabric portion forced transfer devices. The clothing seam expanding device according to claim 1, wherein a rotating body for forced feeding for forcibly feeding is provided at the transfer start end portion. The pair of fabric section forced transfer devices are composed of a set of transfer devices arranged so that the transfer surfaces face each other, and each of these sets of transfer devices is arranged so that the transfer surfaces face each other. A claim characterized by being composed of a set of endless belts, one of which is interlocked with a drive motor and configured in a drive rotation type, and the other endless belt is configured in a driven rotation type. Item 2. The clothing stitch expansion device according to item 1 or 2. The forced discharge transfer device for the garment with expanded stitches is composed of a plurality of circular endless belts having a cross section arranged side by side in a direction orthogonal to the longitudinal direction of the stitch, and the circular endless belts having a plurality of cross sections are used. The clothing seam expanding device according to any one of claims 1 to 3, wherein the pair of fabric portions is interlocked with and connected to a drive motor of the forced transfer device. The circular cross-section endless belt includes a pulley located at the starting end of forced discharge and transfer of the garment with expanded seams, a pulley that passively receives a driving force from the drive motor, and an idle pulley that contacts the outer peripheral portion of the circular cross-section endless belt. The plurality of pulleys are laid across a plurality of pulleys, and these plurality of pulleys are used when the second state is switched to the first state according to the detection operation of the detector and when the detector is stitched. It is supported by a link mechanism that bends so that the circular endless belt with a cross section does not come off when the first state is switched to the second state according to the operation of detecting the end portion of the expanded clothing in the transfer direction. The garment seam expanding device according to claim 4, which is characterized. The clothing stitch expansion device according to any one of claims 1 to 5, wherein the stitch formed by the overlock stitch is classified into JIS notation symbol class 500.

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