JP2009039220A - Feed mechanism and sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sew sequin 103 on a pleated cloth 700 by a sewing machine 10. <P>SOLUTION: A feed mechanism 100 that transports the pleated cloth 700 on the sewing machine 10 is provided with: a needle plate 300 equipped with a supporting surface 310 that supports the pleated cloth 700; a feeding tooth 400 that projects upwards from the needle plate 300 periodically moves the pleated cloth 700 supported by the needle plate 300; and a presser foot 500 that presses down from above the pleated cloth 700 against the feeding tooth 400 around a needle dropping position. The needle plate 300 is abut against the inner side of the pleated cloth 700 from the lower side and is equipped with a guiding rib 330 that guides a crest part 702 towards the needle dropping position. The feeding tooth 400 rises to the same height or higher than the guiding rib 330 on the downstream side of the needle dropping position in the extensional direction of the guiding rib 330 and on a straight line including the needle dropping position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a feed mechanism and a sewing machine. More specifically, the present invention relates to a feed mechanism that moves a sewing product in the sewing machine and a sewing machine including the feed mechanism.

  In addition to simple sewing, the sewing machine is used for various purposes such as embroidery, edging, piping, and button sewing. Many home sewing machines have a built-in cam device and can be used for various purposes. On the other hand, a dedicated machine corresponding to the application is used for the industrial sewing machine. Some occupational sewing machines are used for purposes other than simple sewing by attaching an adapter.

Patent Document 1 and Patent Document 3 below describe a sequin sewing device as a dedicated sewing machine for sewing sequins. By using such an apparatus, sequins can be sewn in various layouts. Patent Documents 2 and 4 listed below describe supply devices that supply sequins to a sewing machine with an appropriate feed amount that matches the sequin size. By attaching such a supply device to a linear sewing machine, sequins can be sewn with a sewing machine with a relatively small capital investment.
JP-A-2005-025771 JP 2006-110074 A JP 2006-346135 A JP 2007-014600 A

  As described above, a device for sewing sequins with a sewing machine is provided. However, there are many types of sewn products that are sewn sequins. In particular, when sequins are sewn on pleated fabric in which parallel crests and troughs are alternately formed, the sewn position is required to be the crest.

  That is, the pleated fabric is characterized by a flexible stretch and a texture induced thereby. For this reason, when a sequin having low flexibility is sewn to a valley portion of the pleated fabric, the fabric is deformed by the sequin and the texture of the fabric is impaired. In addition, sequins that enter the troughs of the dough are behind the dough and have a low optical effect.

  Therefore, when sewing sequins on pleated fabric, it is preferable to sew sequins on the ridges. However, when the pleated fabric is loaded into the sewing machine feed mechanism, the ridge is initially dropped while the pleated fabric is fed repeatedly after the sequins are sewn even if the ridge is loaded at the needle dropping position. The position may shift. For this reason, a high degree of skill is required in the skill of the operator in the work of sewing sequins on the pleated fabric. Therefore, the productivity of a product sewn with sequins is low and consequently expensive.

  In order to solve the above-mentioned problems, as a first form of the present invention, when sewing a flaky decorative object along a mountain portion of a sewing product in which parallel mountain portions and valley portions are alternately formed, A sewing machine feeding mechanism that periodically conveys the workpiece to be sewn, and has a needle plate having an upper surface that supports the workpiece to be sewn around the needle drop position, and periodically upward from a hole formed in the needle plate. And a feed dog that moves the workpiece supported by the needle plate from the upstream side to the downstream side in the predetermined conveying direction, and the workpiece to be moved above the feed dog around the needle drop position. The throat plate extends in the transport direction upstream from the needle drop position, protrudes from the upper surface, contacts the inner side of the ridge from the lower surface of the workpiece, and is sewn. It has a guide rib that guides the peak of the object to the needle drop position, A straight line including the extending direction and the stitch point of the inner rib, the downstream side of the needle drop position, the feed mechanism to rise to the same or a higher position than the guide ribs are provided.

  Further, as a second embodiment of the present invention, when a flaky decorative object is sewed along a mountain portion of a sewing object in which parallel peak portions and valley portions are alternately formed, the sewing object is periodically inserted. A sewing machine provided with a feeding mechanism for transporting and a supply device for repeatedly supplying flaky ornaments to a needle drop position, the feed mechanism having a top surface that supports a sewing product from below around the needle drop position A feed dog that periodically protrudes upward from a hole formed in the needle plate and moves the workpiece supported by the needle plate from the upstream side to the downstream side in a predetermined conveyance direction, and a needle drop A presser foot that presses the workpiece against the feed dog from above around the position, and the needle plate extends in the transport direction upstream from the needle drop position and rises from the upper surface to be sewn. The product to be sewn is brought into contact with the inside of the ridge from the lower surface of the product. It has a guide rib that guides the peak to the needle drop position, and the feed dog is on the straight line including the extending direction of the guide rib and the needle drop position, and is the same as the guide rib on the downstream side of the needle drop position? A sewing machine is provided which is characterized by rising to a higher position.

  It should be noted that the above summary of the invention does not enumerate all the necessary features of the present invention. Further, a sub-combination of these feature groups can be an invention.

  Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the claims. Moreover, not all the combinations of features described in the embodiments are essential for the solution means of the invention.

  FIG. 1 is a perspective view showing an external appearance of a sewing machine 10 according to one embodiment. As shown in the figure, the sewing machine 10 is formed by attaching a feed mechanism 100 and a supply device 200 described later to a sewing machine body 11 capable of zigzag sewing. In this sewing machine 10, the supply device 200 is supplied with driving force from the sewing machine body 11 via the link 12. Further, a sewing product to be described later is sent in the conveying direction indicated by an arrow P in the drawing.

  FIG. 2 is a view showing a finished state of the pleated fabric 700 in which the sequin 103 is sewn by the sewing machine 10 shown in FIG. As shown in the figure, this pleated fabric 700 is made of a fabric that has been creased twice along the direction indicated by the arrow X in the figure, and further creased along the direction indicated by the arrow Y. It is formed. By such processing, the folds extending in the direction of the arrow X are folded, and a texture is formed in which the ridges 702 and the valleys 704 parallel to each other extending alternately in the direction of the arrow Y are conspicuous. Is done.

  The creases in the ridges 702 and the valleys 704 of the pleated ground 700 are each permanently maintained in shape by chemical or physical treatment. On the other hand, since the cloth which is a material is a flexible material, it has flexibility with a low Young's modulus as a whole. In addition, since surfaces with different orientations are alternately arranged, it has a unique texture when exposed to light.

  The multiple creased pleated fabric 700 as described above has a high two-dimensional stretchability, and flexibly responds to differences in body shape and dimensions, particularly when it is a clothing product. In addition, it has high performance as a material for clothing, such as having both air permeability and air retention, and not having noticeable wrinkles. However, since the pleated fabric 700 has a two-dimensional high stretchability, when the sewing process is performed using the sewing machine 10, the feeding mechanism 100 (see FIG. 5) that can reliably convey the pleated fabric 700 itself without applying stress. 3) is required.

  On the other hand, the sequin 103 is a flaky decorative object having a flat surface with high reflectivity, and has a hole 105 through which a thread is inserted at the time of sewing. Such sequins 103 reflect light when it strikes, giving a unique impression to fabrics that generally have low light reflectivity. However, the sequin 103 is formed of a hard material such as a resin for the purpose of forming a surface property with high reflectivity.

  Thus, since the sequin 103 is not flexible, it is preferable to sew along the ridge line of the peak portion 702 when sewing to the pleated fabric 700. The reason is that when sewn in the valley 704, the sequin 103 pushes open the pleated fabric 700, and the unique texture of the pleated fabric 700 is impaired. Further, since the amount of light hitting the sequin 103 in the shade of the peak portion 702 of the pleated fabric 700 is reduced, the effect of sewing the sequin 103 is also reduced.

  For the above reasons, when the sequin 103 is sewn to the pleated fabric 700, the sequin 103 is sewn in a line along the ridgeline of the peak portion 702. In other words, in the sewing machine that sews the sequin 103, it is required that the peak portion 702 of the pleated fabric 700 continues to pass through the needle drop position.

  FIG. 3 is an enlarged perspective view showing the periphery of the feed mechanism 100 of the sewing machine 10. As shown in the figure, the feed mechanism 100 includes a needle plate 300 mounted horizontally on the sewing machine 10 and a presser bar 500 disposed above the needle plate 300. With respect to the feed mechanism 100, the supply device 200 is disposed so as to be placed on the presser bar 500 from the side.

  In this feed mechanism, the workpiece is fed along the upper surface of the needle plate 300 from the lower right to the upper left in the drawing. The fed workpiece is pressed against the feed dog 400 (see FIG. 6) protruding upward from the needle plate 300 by the presser foot 520 of the presser foot 500. Thereby, the sewing product is intermittently sent to the upper left in the figure according to the displacement of the tooth portion 420.

  The supply device 200 sends out sequins one chip at a time above the presser foot 520 for such a workpiece. The fed sequin 103 is sewn to the workpiece to be sewn through the supply hole 540 of the presser foot 500. Details of each member will be described later with reference to individual drawings.

  FIG. 4 is a perspective view showing the supply device 200 alone. As shown in the figure, the supply device 200 is formed of a pair of frames 220 and 240 that stand vertically from the sewing machine 10 in parallel with each other. An operation lever 210 is attached to the outside of the frame 220, and a clutch lever 270 is attached to the outside of the frame 240.

  On the other hand, between the frames 220 and 240, a feed claw 230 that engages with the hole 105 of the sequin 103 to advance the sequin and a latch 260 that locks the remaining sequin every time the sequin 103 is fed by one chip are arranged. The Further, at the front end of the supply device 200, a delivery port 280 through which the sent sequin 103 is sent out is opened, and a cutter 250 that cuts the sequin 103 sent out from the delivery port 280 for each chip is arranged. Further, a release lever 232 that disengages the feed claw 230 and the latch 260 when the sequin 103 is loaded or removed is disposed behind the supply device 200.

  In the supply device 200 as described above, the operation lever 210 and the clutch lever 270 rotate around one end as an axis. When the actuating lever 210 is pulled up from the sewing machine main body 11 via a link, the rotation is transmitted to the feeding claw 230 and the sequin 103 is sent out by one chip. Moreover, after sending out the sequin 103, it returns to the original position autonomously.

  On the other hand, the clutch lever 270 stops at either the tilted position or the standing position. In the supply device 200 according to this embodiment, when the clutch lever 270 is in the upright position, the transmission between the operation lever 210 and the feed claw 230 is interrupted, and the supply device 200 also pauses when the sewing machine body 11 operates. .

  FIG. 5 is a perspective view showing the needle plate 300 in the feed mechanism 100 alone. As shown in the figure, the needle plate 300 is a flat plate-like member as a whole, and its upper surface is a support surface 310 that supports the workpiece.

  Further, a needle hole 338 through which the sewing needle 800 (see FIG. 12) is inserted is provided at the approximate center. The position of the needle hole 338 is the needle drop position of the sewing machine body 11. In FIG. 5, the lower right side in the drawing corresponds to the upstream side in the conveyance direction of the sewing product. Therefore, the workpiece is fed in the conveying direction indicated by the arrow P in the drawing.

  Further, the needle plate 300 has three rows of feed tooth paths 340, 350, 360 penetrating to the lower surface in a region hidden behind the presser foot 520 of the presser foot 500 in FIG. From the feed teeth 340, 350, 360, a tooth portion 420 (see FIG. 6) of the feed dog 400 described later rises. The central feed tooth passage 350 is located on the downstream side of the needle hole 338, but the feed tooth passages 340 and 360 that sandwich the feed tooth passage 350 extend from the upstream side to the downstream side of the needle hole 338.

  Furthermore, screw holes 320 are formed in the upper and lower ends of the needle plate 300 in the longitudinal direction. The needle plate 300 is attached to the sewing machine main body 11 by the screw inserted into the screw hole 320. In other words, the existing needle plate 300 can be replaced and mounted on the sewing machine body 11.

  Furthermore, the needle plate 300 has a guide rib 330 that starts in the vicinity of the screw hole 320 on the upper and lower sides of the drawing. The guide rib 330 extends in parallel to the feed teeth 340, 350, 360 beyond the needle hole 338 until just before the central feed tooth 350. As a result, the high feed teeth 424 (see FIG. 6) that protrude into the guide rib 330, the needle hole 338, and the feed tooth path 350 are arranged in a line on a common straight line.

  The guide rib 330 has a tapered tip 332 on the upstream side in the transport direction P. The rib main body 334 following the distal end portion 332 maintains a substantially constant cross-sectional shape, but forms a widened portion 336 whose width gradually increases from the vicinity of the needle hole 338.

  Since the widened portion 336 has a sufficient width, the opening of the needle hole 338 is not kicked by the side surface of the guide rib 330 and has a circular opening. Further, the width of the widened portion 336 of the guide rib 330 has such a shape that the guided workpiece is smoothly guided to the width of the high feed dog 424 described later.

  FIG. 6 is a perspective view showing the feed dog 400 in the feed mechanism 100 alone. As shown in the figure, the feed dog 400 includes a tooth portion 420 having a tip divided into three portions and a frame 430 that integrally connects the tooth portions 420. One end of the frame 430 is provided with a screw hole used when the feed dog 400 is attached to the internal mechanism of the sewing machine body 11.

  In the feed dog 400, a high feed dog 424 higher than the others is formed at the center of the tooth portion 420 as shown in FIG. A pair of low feed teeth 422 and 426 lower than the high feed dog 424 are arranged with the high feed dog 424 interposed therebetween.

  FIG. 7 and FIG. 8 are perspective views showing the presser foot 500 alone in the feed mechanism 100, and show a state where the presser foot 500 is viewed from different angles. As shown in the figure, the presser bar 500 has an L-shape as a whole. Among them, a screw hole 510 is formed at the center of the vertically upstanding portion. Thus, the sewing machine body 11 is mounted.

  Further, the horizontal portion of the presser foot 500 is a presser foot 520 that presses the workpiece toward the needle plate 300. In that case, the lower surface of the presser foot 520 becomes a presser surface 501 that comes into contact with the sewing product.

  Further, a supply hole 540 having a dimension for allowing the sequin 103 to pass is formed in the approximate center of the presser foot 520. Further, a notch portion 530 that avoids interference with the supply device 200 is formed on the side edge portion of the presser foot 520 on the right side in the conveyance direction P of the sewing product.

  FIG. 9 is a perspective view showing a state in which the presser foot 500 is viewed from the presser surface 501 formed on the lower surface of the presser foot 520. As shown in the figure, the pressing surface 501 forms a single horizontal plane as a whole, but has a unique shape having a plurality of grooves. In the following description, the upstream side is referred to as the front side and the downstream side is referred to as the rear side in the conveyance direction of the sewing product indicated by the arrow P in the drawing.

  The lower end of the supply hole 540 opens at the approximate center of the pressing surface 501. On the other hand, a short V groove 550 having a V-shaped cross-sectional shape is formed between the front end (lower left in the drawing) of the presser bar 500 and the supply hole 540. The front end of the short V-groove 550 opens at the front end of the presser foot 500. Further, the rear end of the short V-groove 550 opens to the inner surface of the supply hole 540. Note that an alignment mark 522 indicating the position of the short V-groove 550 is formed at a position where the operator can visually recognize the front end of the presser bar 500.

  On the other hand, a short wide groove 580 is formed on the rear side of the supply hole 540 between the supply hole 540 and the rear end of the presser bar 500. The short wide groove 580 has a front end opened on the inner surface of the supply hole 540. Further, the rear end is opened to the rear end of the presser foot 500. The short wide groove 580 has substantially the same width as the supply hole 540. This means that the short wide groove 580 has a width that allows the sequin 103 after sewing to pass smoothly.

  Further, in the vicinity of the front end of the short wide groove 580, the bottom surface of the short wide groove 580 becomes deeper toward the supply hole 540 to form a rear escape groove 570 for the supply hole 540. Further, when the presser foot is attached to the sewing machine main body 11, a deeper narrow groove 590 is formed on the bottom surface of the short wide groove 580 serving as the top surface over the entire length thereof. As will be described later, the short narrow groove 590 has a width that allows the thread 810 sewn with the sequin 103 to pass therethrough.

  Furthermore, the holding surface 501 is formed with a pair of long grooves 610 and 660 extending in the longitudinal direction with the supply hole 540 interposed therebetween. A long narrow groove 560 having the same cross-sectional shape as the short short narrow groove 590 at the bottom of the short wide groove 580 is formed at the bottom of one long wide groove 660. On the other hand, the side surface of the other long wide groove 610 is opened to the side surface of the presser foot 520. The long and narrow grooves 610 and 660 and the narrow and narrow groove 560 are formed over the entire length of the pressing surface 501 in parallel with the conveyance direction P of the sewing product.

  FIG. 10 is a cross-sectional view schematically showing the operation of each part of the feed mechanism 100 by the cross section at the position indicated by the arrow A in FIG. The position indicated by the arrow A includes the tip 332 of the guide rib 330.

  As shown in the figure, when the pleated fabric 700 is loaded into the feeding mechanism 100, the loading position is adjusted so that one of the ridges 702 of the pleated fabric 700 matches the alignment mark 522. Accordingly, the peak portion 702 is loaded at a position that coincides with the short V-groove 550 and the leading end portion 332 of the guide rib 330.

  At this time, another peak portion 702 adjacent to the peak portion 702 that matches the short V-groove 550 is in a position that matches the narrow groove 560. By operating the feed mechanism 100 in such a state, the feed of the pleated fabric 700 is started according to the operation of the low feed dogs 422 and 426.

  FIG. 11 is a cross-sectional view schematically showing the operation of each part of the feed mechanism 100 by a cross section at a position indicated by an arrow B in FIG. The position indicated by the arrow B includes the rib main body 334 of the guide rib 330.

  As shown in the figure, at the position where the rib main body 334 is present, the peak portion 702 of the pleated fabric 700 is pushed up by the rib main body 334 that is in contact with the inner surface of the peak portion 702 from the lower side, so that Pushed in. As a result, the pleated fabric 700 is not displaced laterally, and the peak portion 702 is fed along the guide rib 330 and the short V-groove 550.

  Along with this, the adjacent peak portions 702 also move inside the narrow groove 560. Thereby, the lateral displacement of the pleated fabric 700 is further suppressed, and deformation of the pleated fabric 700 is prevented.

  FIG. 12 is a cross-sectional view schematically showing the operation of each part of the feed mechanism 100 by a cross section at a position indicated by an arrow C in FIG. The position indicated by the arrow C includes a needle hole 338 formed in the guide rib 330.

  As shown in the figure, a supply hole 540 opens in the presser bar 500 at a position including a needle hole 338 corresponding to the needle drop position. Accordingly, at this position, the one-chip sequin 103 is supplied from the supply device 200 onto the peak portion 702 of the pleated fabric 700 through the supply hole 540. Further, from above, the sewing needle 800 descends and sequentially penetrates the supply hole 540, the hole 105 of the sequin 103 and the needle hole 338, and the sequin 103 is sewn to the peak portion 702.

  At this time, the upstream side of the pleated fabric 700 is positioned by the guide rib 330, the short V-groove 550, and the long and narrow groove 560, as shown in FIG. Is located securely. In addition, since the pleated fabric 700 is also fed by the low feed dogs 422 and 426, puckering does not occur.

  FIG. 13 is a cross-sectional view schematically showing the operation of each part of the feed mechanism 100 by the cross section at the position indicated by the arrow D in FIG. The position indicated by the arrow D includes the high feed dog 424 of the tooth portion 420.

  As shown in the figure, there is no guide rib 330 downstream of the needle hole 338. However, the high feed dog 424 that rises to the same height as the guide rib 330 or higher than the guide rib 330 abuts against the peak portion 702 from the lower surface of the pleated fabric 700. As a result, the pleated fabric 700 is strongly conveyed at the position of the mountain portion 702. In addition, when the high feed dog 424 is lowered, it is lowered to a position lower than the guide rib 330. Thereby, the pleat place 700 is sent smoothly.

  Further, the sequin 103 sewn to the peak portion 702 of the pleated fabric 700 passes through the inside of the short wide groove 580 formed in the pressing surface 501. Further, the thread 810 sewn with the sequin 103 passes through the inside of the short narrow groove 590 formed on the top surface of the short wide groove 580. As a result, the pleated fabric 700 sewn with the sequin 103 is smoothly fed to the rear of the feed mechanism 100.

  As shown in FIG. 9, a rear relief groove 570 is formed on the downstream side of the supply hole 540 of the presser foot 500. As a result, the sequin 103 and the thread 810 sewn on the pleated fabric 700 are smoothly introduced into the short wide groove 580 and the short narrow groove 590.

  In addition, as shown in FIG. 5, the guide rib 330 has a widened portion 336 whose width gradually increases from the vicinity of the needle hole 338. Thereby, the peak portion 702 of the pleated fabric 700 is smoothly guided toward the wide high feed dog 424.

  Further, the valley 704 of the pleated fabric 700 is still fed by the low feed teeth 422 and 426 that are still in contact. Thereby, since the valley part 704 is sent equally to the peak part 702, puckering or the like does not occur in the pleated fabric 700.

  In the above description, one row of sequins 103 is sewn, but it goes without saying that a plurality of rows of sequins 103 may be sewn. In such a case, the sequin 103 already sewn to the peak portion 702 adjacent to the peak portion 702 where the sequin 103 is being sewn is one of the long wide grooves 610 and 660 formed on the pressing surface 501 of the presser bar 500. The sequin 103 that has been sewn has little influence on the load of the feed mechanism.

  The top surface of one long groove 610 is flat, and the side surface is open because of the interference with the supply device 200 of the sequin 103 due to interference with the other long groove 660. It is because it cannot take. Therefore, if the specification of the supply device 200 permits, one long groove 610 preferably has the same cross-sectional shape as the other long groove 660.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

It is a perspective view which shows the external appearance of the sewing machine 10 which concerns on embodiment. It is a figure which shows the external appearance of the pleated fabric 700 which sewn Sequin 103. FIG. 3 is an enlarged view showing the periphery of a feeding mechanism 100. It is a perspective view which shows supply apparatus 200 of sequin 103 alone. It is a perspective view which shows the needle plate 300 in the feed mechanism 100 independently. FIG. 3 is a perspective view showing a feed dog 400 in the feed mechanism 100 alone. It is a perspective view which shows the presser foot 500 in the feed mechanism 100 independently. It is a perspective view which shows a mode that the presser foot 500 was seen from another angle. It is a perspective view which shows a mode that the presser foot 500 was seen from the pressing surface 501. FIG. FIG. 10 is a cross-sectional view schematically showing the operation of the feed mechanism 100 in the vicinity of the front end portion 332 of the guide rib 330. 6 is a cross-sectional view schematically showing the operation of the feed mechanism 100 in the vicinity of the rib main body 334 of the guide rib 330. FIG. It is sectional drawing which shows typically operation | movement of the feed mechanism 100 in a needle drop position. It is sectional drawing which shows typically operation | movement of the feed mechanism 100 in the high feed dog 424 vicinity.

Explanation of symbols

10 sewing machine, 11 sewing machine body, 100 feeding mechanism, 103 sequin, 105 holes, 200 feeding device, 210 operating lever, 220, 240, 430 frame, 230 feeding claw, 232 release lever, 250 cutter, 260 latch, 270 clutch lever, 280 Delivery port, 300 Needle plate, 310 Support surface, 320, 410, 510 Screw hole, 330 Guide rib, 332 Tip, 334 Rib body, 336 Widened part, 338 Needle hole, 340, 350, 360 Feeding toothway, 400 Feed dog, 420 teeth, 422, 426 Low feed dog, 424 High feed dog, 500 Presser foot, 501 Presser surface, 520 Presser foot, 522 Alignment mark, 530 Notch, 540 Supply hole, 550 Short V groove, 560 Long narrow groove, 570 rear relief groove, 580 wide groove, 90 short narrow grooves, 610,660 Nagahiromizo, 700 pleated fabric, 702 Yamabe, 704 valleys, 800 needle, 810 yarns

Claims (16)

A sewing machine feed mechanism that periodically conveys the sewing object when sewing a flaky decorative object along the peak part of the sewing object in which parallel ridges and valleys are alternately formed,
A throat plate having an upper surface that supports the sewing product from below around the needle drop position;
A feed dog that periodically protrudes upward from the hole formed in the needle plate and moves the sewing object supported by the needle plate from the upstream side to the downstream side in a predetermined conveyance direction;
A presser foot that presses the sewing product against the feed dog from above around a needle drop position;
The needle plate extends in the transport direction on the upstream side of the needle drop position, protrudes from the upper surface, contacts the inner side of the peak portion from the lower surface of the sewing product, and A guide rib for guiding the peak to a needle drop position;
The feed mechanism is a feed mechanism that is on a straight line including an extending direction of the guide rib and a needle drop position, and rises to a position equal to or higher than the guide rib on the downstream side of the needle drop position.   The feed mechanism according to claim 1, wherein the needle plate has a needle hole that opens to a top surface of the guide rib in the vicinity of an end portion on the downstream side of the guide rib and penetrates the needle plate.   The feed mechanism according to claim 2, wherein the needle hole has a circular opening on the top surface of the guide rib.   The feed mechanism according to claim 1, wherein the guide rib is wider as the width in the direction orthogonal to the transport direction goes downstream.   The feed mechanism according to claim 1, wherein the guide rib continuously protrudes from the upper surface of the needle plate at an upstream end portion in the transport direction. The feed dog is
High feed teeth arranged downstream of the guide ribs along the transport direction;
A low feed dog that is arranged on the side of the high feed dog in a direction orthogonal to the transport direction and pushes up the workpiece in synchronization with the high feed dog at a position lower than the top surface of the guide rib. The feed mechanism according to claim 1 including.   The feed mechanism according to claim 6, wherein the low feed dog extends to the upstream side of the needle drop position in the transport direction.   The feed mechanism according to claim 6, wherein the low feed dog is in contact with a valley portion of the sewing product from a lower surface of the sewing product.   The feed mechanism according to claim 1, wherein the presser bar has a supply hole through which the flaky decorative object is passed together with a needle at a needle drop position.   The feed according to claim 9, wherein the presser bar has the same width as the flaky decorative object sewn on the workpiece, and has a rear relief groove formed continuously from the supply hole on the bottom surface. mechanism.   The presser foot is formed on the upstream side of the supply hole in the transport direction, from the upstream end surface of the presser foot to the supply hole, continuously in the transport direction and facing the guide rib, The feed mechanism according to claim 9, wherein a short V groove that guides the peak portion of the sewing product is provided on a bottom surface.   The feed mechanism according to claim 11, wherein the presser bar has a mark indicating a position of the short V-groove in an area that can be visually recognized by an operator.   The presser foot passes the flaky decorative object sewn on the sewing product continuously from the supply hole to the rear end of the presser foot downstream from the needle drop position in the transport direction. The feed mechanism according to claim 9, wherein a wide groove having a width is provided on a bottom surface.   The presser bar passes downstream from the needle drop position in the transport direction, continuously from the supply hole to the rear end of the presser bar, and passes a thread for sewing the flaky decorative object to the sewing object. The feed mechanism according to claim 13, wherein a narrow groove is provided on a top surface of the wide groove.   The presser foot is formed over the entire length of the presser foot in parallel with the conveying direction of the sewing product, abuts against the peak portion of the sewing product, and the moving direction of the peak portion of the sewing product The feed mechanism according to claim 1, further comprising a long V-groove for guiding the guide. A feed mechanism that periodically conveys the sewing product when the flaky decorative object is sewn along the peak portion of the sewing product in which parallel ridges and valleys are alternately formed;
A sewing machine comprising a supply device for repeatedly supplying flaky ornaments to the needle drop position,
The feeding mechanism is
A throat plate having an upper surface that supports the sewing product from below around the needle drop position;
A feed dog that periodically protrudes upward from the hole formed in the needle plate and moves the sewing object supported by the needle plate from the upstream side to the downstream side in a predetermined conveyance direction;
A presser foot that presses the sewing product against the feed dog from above around a needle drop position;
The needle plate extends in the transport direction on the upstream side of the needle drop position, protrudes from the upper surface, contacts the inner side of the peak portion from the lower surface of the sewing product, and A guide rib for guiding the peak to a needle drop position;
The feed dog is on a straight line including the extending direction of the guide rib and the needle drop position, and rises to a position equal to or higher than the guide rib on the downstream side of the needle drop position. Sewing machine.

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