JP2005102911A - Workpiece roll sewing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a workpiece roll sewing device capable of sewing the edge part of a workpiece while it is kept rolled in the minimum roll width close to a sewing limit. <P>SOLUTION: While rolling the edge part Aa of the workpiece A in a direction roughly orthogonal to a feed direction by a rolling guide 4 of the workpiece roll sewing device 1, the rolled side edge part Aa of the workpiece A delivered from the rolling guide 4 is brought closer to the needle hole 2c of a presser foot 2 and a needle location, pressed into a flat state by the pressing part 2b of the presser foot 2, and supplied to the needle location while being controlled to be a prescribed roll width (roughly 1mm) by the groove part 2d of the presser foot 2. Also, a sewing machine needle 7 is continuously inserted in the feed direction C along the rolled side edge part Aa of the workpiece A, and the rolled side edge part Aa of the workpiece A pressed by the presser foot 2 is rolled and sewn in a prescribed roll width while being transferred in the feed direction C by a feed dog 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sewing machine for sewing a material used for sewing an edge of a material to be sewn such as a sheet or fabric cut and woven to a desired size into a desired winding state.

  Conventionally, as a method of sewing the edge of the sewing product as described above three times, for example, the edge of the sewing product (fabric) supplied to the needle drop position of the sewing machine is divided into three by the guide groove of the presser fitting. The three-winding fabric feed device of Patent Document 1 that sews the air discharged from the air discharge port onto the lower surface of the sewing object while being wound in the winding state, and the sewing material supplied to the needle drop position of the sewing machine A three-winding sewing tool for a sewing machine of Patent Document 2 in which an edge (edge) of an object (cloth) is sewn while being wound in a three-winding state by an outer bending guide piece and an inner bending guide piece of the bending guide body; There is.

  However, when winding three edges of the sewing product with the presser fitting of Patent Document 1, since the thickness of the presser fitting is thick, the narrow groove portion where the edge of the sewing product is wound to a width of approximately 1 mm. Is difficult to form on the front end of the presser fitting. In addition, when the thickness of the presser fitting is reduced, the pressing force necessary to hold the winding side edge of the sewing product in the wound state cannot be applied, and the winding width may be displaced. . In addition, when the winding width of the winding side edge of the sewing product is wide, fingers and nails are easily caught on the winding side edge of the sewing product, and the feeling of touch becomes poor.

  In addition, when winding the edge of the sewing product three times with the winding guide of Patent Document 2, the bending is performed while winding the edge of the sewing product by the length that the front end of the presser fitting protrudes. Since the exit of the guide body and the needle hole of the presser foot that is pressed while winding the winding side edge of the sewing product are spaced apart, it reaches the position just below the needle hole of the presser foot and the needle drop position. In addition to trying to restore the winding side edge of the sewing product to a flat state, the winding side edge is loosened or the winding width is easily displaced, and the desired winding width It is difficult to sew.

Japanese Utility Model Publication No. 62-120972 Japanese Utility Model Publication No. 1-99373.

  In view of the above problems, the present invention is configured to wind a sewing product that is fed out from a winding groove outlet of the winding guide while winding an edge of the sewing product in a direction substantially perpendicular to the feeding direction by the winding guide. By sewing the side edge close to the presser foot needle hole and the needle drop position, the edge of the work piece can be sewn while being wound to the minimum winding width close to the sewing limit. The object is to provide a material sewing device.

  In this invention, the edge of the workpiece to be fed to the needle drop position of the sewing machine is pressed with a presser foot while being wound in a direction substantially perpendicular to the feed direction, and feed is performed with a feed dog that protrudes and appears on the upper surface of the needle plate of the sewing machine A sewing product winding and sewing device that sews the sewing needle of the sewing machine to a winding side edge of the sewing product that is transferred in the feeding direction and sews it to a desired winding width. A winding groove formed in a shape in which the edge of the sewing product is wound in a direction substantially perpendicular to the feeding direction is formed in a substantially plate shape that is thinner than the presser foot that is attached immediately before the needle drop position. A winding groove outlet of the winding guide that is provided on the winding guide and is fed out while the edge of the sewing product is wound is provided with a predetermined edge of the sewing product with respect to the front end of the presser foot. It is close to the interval that is supplied while being wound around the winding width, and smaller than the winding width of the winding side edge of the sewing product. In wherein the the needle hole which the sewing needle is inserted, a workpiece take-sewing device provided near the front end portion of the presser foot of the winding groove outlet of the winding guide is close.

  The above-mentioned sewing object can be constituted by, for example, a fiber product (and also a resin product) such as a sheet, fabric, handkerchief, bandana, or ribbon cut and woven to a desired size. In addition, the presser foot can be pressed, for example, by the winding groove outlet portion of the winding guide being close to the presser side front end portion or the winding side edge of the sewing product fed out from the winding groove outlet portion of the winding guide. It can be configured with a shape, structure, or the like that is pressed close to the gold needle hole and needle drop position. Further, the winding guide is wound, for example, by a three-winding guide for winding the edge of the sewing product in a three-winding state, a four-winding guide for winding in a four-winding state, or other times. It can be composed of a guide or the like. Further, as a method of attaching the winding guide immediately before the needle drop position of the sewing machine, for example, a binder attaching tool of registered utility model No. 3036739, a method of attaching directly to the upper surface of the needle plate disclosed in Japanese Patent Laid-Open No. 2001-300194, etc. Can be used.

  In other words, the edge (substantially straight edge or substantially curved edge) of the workpiece to be supplied to the needle drop position of the sewing machine is used as the winding groove of the substantially plate-shaped winding guide that is thinner than the presser foot. The winding side edge of the workpiece to be fed out from the winding groove outlet portion of the winding guide while being inserted and wound in a direction substantially orthogonal to the feeding direction (three windings), the winding groove outlet portion As close as possible to the needle hole and the needle drop position of the presser foot close to, and press it flat with the presser foot while being wound to a predetermined winding width. In addition, the sewing needle is continuously inserted in the feed direction along the winding side edge of the sewing object pressed by the presser foot, and the winding side edge of the sewing object is moved in and out of the feed dog. Sew to a predetermined winding width (substantially 1 mm width) while transferring in the feed direction.

  As an embodiment, a groove portion that guides toward the needle drop position while restricting the winding side edge portion of the sewing product to a predetermined winding width communicates with the needle hole of the presser foot and It can be provided in the feed direction along the pressing surface. Further, the winding groove of the winding guide can be provided in a shape in which the edge of the sewing product is wound in a three-winding state in a direction substantially orthogonal to the feeding direction. Further, a needle hole having a diameter smaller than the winding width of the winding side edge of the sewing product and inserted through the sewing needle is provided at the needle drop position of the needle plate in communication with the needle hole of the presser foot. Can do.

  According to the present invention, the winding side edge of the workpiece to be fed out from the winding guide is wound around the edge of the sewing product in the direction substantially perpendicular to the feeding direction by the winding guide. Since it is pressed close to the hole and needle drop position and wound to the specified winding width, the winding side edge of the sewing product does not loosen or the winding width is not displaced, and the sewing is performed. Sewing can be reliably performed while the edge of the object is wound to a predetermined winding width.

  Moreover, since the edge of the workpiece is wound with a substantially plate-shaped winding guide that is thinner than the presser foot, it can be sewn while being wound to the minimum winding width close to the sewing limit. Because the winding width of the winding side edge is narrow and the winding side edge bulges very little, it is difficult for human fingers and nails to be caught on the winding side edge, and a good hand feeling is obtained. It is done. In addition, it is not necessary to process and treat the edge of the sewing product with resin in order to prevent the thread from falling off, and the dirt adhering to the winding side edge of the sewing product can be cleaned and removed cleanly. be able to.

  An object of the present invention is to sew the edge of the sewing product close to the front end of the presser foot with the object that the edge of the sewing product can be sewn while being wound to the minimum winding width close to the sewing limit. While winding in the direction substantially perpendicular to the feed direction with the turning guide, bring the winding side edge of the workpiece to be fed out from the winding groove outlet of the winding guide closer to the needle hole and needle drop position of the presser foot. Realized by pressing.

  An embodiment of the present invention will be described in detail with reference to the drawings.

  The drawings show a sewing product winding sewing device used for the operation of sewing three edges of the sewing product with a sewing machine. In FIGS. 1, 2 and 3, the sewing product winding sewing device is shown. 1, while winding the edge Aa of the sewing product A supplied to the needle drop position of the sewing machine 6 in a direction substantially perpendicular to the feed direction C (arrow direction) by the winding guide 4 immediately before the needle drop position, The winding side edge Aa of the sewing object A wound by the winding guide 4 is pressed while being wound to a predetermined winding width by the presser foot 2 close to the winding guide 4. Further, the sewing needle 7 is fed in the feed direction C along the winding side edge Aa of the sewing product A wound by the winding guide 4 through the needle hole 2c provided in the vicinity of the front end portion of the presser foot 2. The winding side edge Aa of the workpiece A pressed through the presser foot 2 is transferred in the feed direction C by the feed dog 8 that protrudes and appears on the upper surface of the needle plate 3 below the needle drop position. Sewing to a predetermined winding width.

  As shown in FIG. 4, the presser foot 2 described above includes a presser portion 2 b formed in a shape in which the winding side edge Aa of the sewing product A is pressed in a substantially flat state, and a lower end of the presser bar 6 a of the sewing machine 6. Provided at the lower end of the presser foot body 2a attached to the sewing machine, and presses the smooth presser surface of the presser portion 2b against the winding side edge Aa of the sewing product A supplied to the needle drop position of the sewing machine 6. The needle plate 3 is fixed to the needle drop position of the base and pressed against the upper surface of the needle plate 3 and the feed dog 8 protruding and protruding on the upper surface of the needle plate 3.

  In addition, a needle hole 2c having a diameter smaller than the winding width (approximately 1 mm) of the winding side edge portion Aa of the sewing object A and having a narrow width is inserted into the winding guide 4 described later. The winding groove 4b exit portion is provided in the vicinity of the front end portion of the presser foot 2 to which the winding groove 4b exits, and the winding side edge Aa of the sewing product A wound by the winding guide 4 has a predetermined winding width (approximately 1 mm). The groove 2d formed to have a regulated width and depth communicates with the needle hole 2c and continues in the feed direction C along the center pressing surface from the front end pressing surface of the pressing portion 2b to the center pressing surface. Provided. Further, the groove 2d may be provided on either the left or right side of the needle hole 2c.

  The above-mentioned needle plate 3 is fixed to the lower part of the needle drop position of the work table constituting the sewing machine 6 and has a smaller diameter and a narrower width than the winding width (approximately 1 mm) of the winding side edge Aa of the sewing object A. The needle hole 3a through which the sewing machine needle 7 is inserted communicates with the needle hole 2c of the presser foot 2 and is provided at the needle drop position on the needle plate 3, and the teeth of the feed dog 8 attached to the lower portion of the needle plate 3 The long holes 3b in which the portions 8a are allowed to appear and retract are provided in front and rear portions and both side portions of the needle hole 3a substantially in parallel with the feed direction C. The sewing needle 7 is smaller in diameter and narrower than the winding width (approximately 1 mm) of the winding side edge Aa of the sewing product A, and is formed in the needle hole 2c of the presser foot 2 and the needle hole 3a of the needle plate 3. The needle diameter is allowed to be inserted.

  As shown in FIGS. 5 and 6, the winding guide 4 has a predetermined winding width (approximately 1 mm or approximately 1 mm) in a direction in which the edge Aa of the sewing product A is substantially orthogonal to the feeding direction C. And a substantially plate-like winding portion 4a that is thinner than the thickness of the presser foot 2 and is fixed to the upper surface of the work bench at the side of the needle drop position. Is provided on the free end side of the mounting arm 5b of the winding guide mounting tool 5 (the binder mounting tool of registered utility model No. 3036739).

  And the winding groove 4b formed in the shape by which the edge Aa of the to-be-sewn material A is wound by the predetermined winding width toward the direction substantially orthogonal to the feed direction C is formed in the winding part 4a inside. A wide entrance portion provided between the opposed surfaces of the folding plate 4c and the outer folding plate 4d and into which the edge Aa of the sewing product A is inserted (or inserted) in the feed direction C inside the winding groove 4b. The winding side edge Aa of the sewing product A wound to a predetermined winding width is formed in a substantially trumpet shape so that it gradually narrows toward the narrow outlet portion fed out in the feed direction C. . Moreover, the winding part 4a can also be formed by bending one thin plate.

  The above-described winding guide mounting tool 5 is configured such that the mounting arm 5b to which the winding guide 4 is mounted is pivotally attached to the rear end of the mounting base 5a fixed to the upper surface of the work table, and the angle and position of the winding guide 4 are mounted. The arm 5b is variably adjusted so that the edge Aa of the sewing product A is supplied toward the needle drop position by the horizontal rotation and expansion / contraction operation of the arm 5b. Further, the winding groove 4b outlet portion of the winding portion 4a that is fed out while the edge Aa of the sewing product A is wound is close to the front end portion of the presser portion 2b of the presser foot 2, and the winding of the sewing product A is performed. The side edge portion Aa is close to the interval supplied to the front end portion of the presser portion 2b of the presser foot 2 while being wound to a predetermined winding width. Further, the rotation angle of the attachment arm 5b is restricted by the rotation restricting member 5c attached to the rear end of the attachment base 5a, and the width adjusting member attached to the edge Aa of the sewing product A at the front end of the attachment base 5a. 5d guides the width in the direction substantially perpendicular to the feed direction C.

  As another method of attaching the winding guide 4 in place of the above-described winding guide attachment 5, for example, the winding guide 4 is directly attached to the upper surface of the needle plate disclosed in Japanese Patent Laid-Open No. 2001-300174, and the feed direction C May be provided so as to be movable and adjustable in a direction substantially orthogonal to the direction and a direction substantially parallel to.

  The illustrated embodiment is configured as described above, and the operation of sewing the edge Aa of the sewing product A in a three-winding state by the sewing product winding sewing device 1 will be described below.

  First, as shown in FIGS. 1, 2, and 3, a winding guide 4 in which an edge Aa (substantially straight edge or substantially curved edge) of the sewing object A is provided immediately before the needle drop position of the sewing machine 6. Are inserted (or inserted) into the winding groove 4b, and are wound three times in a predetermined winding width (approximately 1 mm) while being bent in a direction substantially orthogonal to the feed direction C.

  Also, as shown in FIGS. 4 and 5, the winding side edge Aa of the workpiece A fed out from the winding groove 4 b outlet portion of the winding guide 4 is pressed close to the winding groove 4 b outlet portion. Close to the needle hole 2c and the needle drop position of the gold 2 as much as possible, and press in a flat state with the front end side pressing surface of the presser portion 2b of the presser foot 2. In addition, the winding side edge Aa of the sewing material A is engaged with the groove 2d of the presser foot 2, and the feed direction along the groove 2d of the presser foot 2 is regulated to a predetermined winding width (approximately 1 mm). Supply to C.

  Next, the sewing machine 6 is driven, and the sewing needle 7 is moved up and down at the needle drop position in conjunction with the movement of the feed dog 8 so as to be inserted into the needle hole 2c of the presser foot 2 and the needle hole 3a of the needle plate 3. At the same time, the needle drop position is inserted substantially perpendicularly to the winding side edge Aa of the workpiece A that is pressed by the front end side pressing surface of the presser foot 2 and engaged with the groove portion 2d of the presser foot 2. It regulates and guides and prevents displacement (blurring) to the left and right during vertical movement.

  In addition, the sewing needle 7 is fed out from the winding groove 4b outlet of the winding guide 4 and inserted into the winding side edge Aa of the sewing product A that is fed in the feeding direction C along the groove 2d of the presser foot 2. The sewing needle 7 is moved while the winding side edge Aa of the workpiece A pressed by the presser foot 2 is moved in the feeding direction C by the projecting and retracting operation of the feed dog 8 projecting and projecting on the upper surface of the needle plate 3. The workpiece A is continuously inserted in the feed direction C along the winding side edge Aa of the workpiece A, and the winding side edge Aa is sewed while being wound three times to a predetermined winding width (approximately 1 mm).

  As described above, the winding groove 4b of the winding guide 4 is wound while winding the edge Aa of the sewing product A in the direction substantially orthogonal to the feed direction C by the winding guide 4 of the sewing product winding device 1. Since the winding side edge Aa of the sewing product A fed out from the exit portion is brought close to the needle hole 2c and the needle drop position of the presser foot 2 and pressed while being wound to a predetermined winding width, The winding side edge Aa is not loosened and the winding width is not displaced, and the edge Aa of the workpiece A can be reliably sewn while being wound to a predetermined winding width. .

  In addition, since the edge Aa of the workpiece A is wound by the substantially plate-shaped winding guide 4 that is thinner than the presser foot 2, the sewing is performed with the winding wound to the minimum winding width close to the sewing limit. The winding width of the winding side edge Aa is as narrow as about 1 mm, and the way the swelling side edge Aa bulges becomes very small, so that the human finger and nail are wound on the winding side edge Aa. It is difficult to get caught on the surface, and a good touch feeling can be obtained. In addition, processing and processing for covering the edge Aa of the sewing product A with a synthetic resin in order to prevent the thread from falling off are unnecessary, and dirt adhering to the winding side edge Aa of the sewing product A is also present. It can be cleaned and removed.

  Further, the needle hole 2c and groove portion 2d of the presser foot 2, the needle hole 3a of the needle plate 3, and the winding groove 4b of the winding guide 4 are wound, for example, with an edge Aa of the sewing product A of about 1 mm or less. It is also possible to change to a hole diameter, groove width, and groove shape that are sewed in three turns.

  The sewing product winding sewing device constituting the present invention can be obtained by, for example, replacing the winding guide 4 for three windings with a winding guide (not shown) for four windings, so that the edge of the sewing product A is obtained. It can also be used for the operation of sewing Aa into a four-winding state.

The perspective view which shows the state which attached the to-be-sewn material winding sewing apparatus to the sewing machine. The enlarged plan view which shows the triple winding sewing method by a to-be-sewn material winding sewing apparatus. The longitudinal section side view which shows the triple winding sewing method by a to-be-sewn material winding sewing apparatus. The enlarged vertical front view which shows the press state of the winding side edge part by a presser foot. The enlarged front view which shows the winding structure of a winding guide. The top view which shows the attachment state of a winding guide attachment.

Explanation of symbols

DESCRIPTION OF SYMBOLS A ... Sewing thing Aa ... Edge part 1 ... Sewing thing winding sewing device 2 ... Presser foot 2c ... Needle hole 2d ... Groove part 3 ... Needle plate 3a ... Needle hole 4 ... Winding guide 4a ... Winding part 4b ... Winding Groove 5 ... Winding guide fixture 6 ... Sewing machine 7 ... Sewing needle 8 ... Feed dog

Claims (4)

The edge of the workpiece to be supplied to the needle drop position of the sewing machine is pressed with a presser foot while being wound in a direction substantially perpendicular to the feed direction, and is transferred in the feed direction by a feed dog that appears and disappears on the top surface of the needle plate of the sewing machine A sewing machine for winding a sewing product, wherein a sewing needle of the sewing machine is inserted into a winding side edge of the sewing product to be transferred in the feeding direction and is sewn to a desired winding width,
A substantially plate having a winding groove formed in a shape in which an edge portion of the sewing object is wound in a direction substantially orthogonal to the feeding direction and having a thickness thinner than that of the presser foot attached immediately before the needle drop position. Provided in a cylindrical winding guide,
The winding groove outlet of the winding guide that is fed out while the edge of the sewing product is wound is wound around the front end of the presser foot so that the edge of the sewing product has a predetermined winding width. Close to the supplied interval,
A needle hole with a diameter smaller than the winding width of the winding side edge of the sewing product is inserted near the front end of the presser foot where the winding groove outlet of the winding guide is close. A sewing device for sewing a sewing material provided. A groove portion that guides toward the needle drop position while restricting the winding side edge portion of the sewing product to a predetermined winding width communicates with the needle hole of the presser foot along the presser surface of the presser foot. The sewing product winding sewing device according to claim 1, which is provided in a feeding direction. The sewing product winding according to claim 1, wherein the winding groove of the winding guide is provided in a shape in which an edge of the sewing product is wound in a three-winding state in a direction substantially orthogonal to the feeding direction. Sewing device. A needle hole through which the sewing needle is inserted with a smaller diameter than a winding width of a winding side edge of the sewing product is provided at a needle drop position of a needle plate in communication with the needle hole of the presser foot. The sewing product winding sewing device according to 1.

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