JP2009213577A - Workpiece transfer device for sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the pattern shift of sewing by effectively preventing the slack of a workpiece at a sewing position. <P>SOLUTION: The workpiece transfer device for a sewing machine includes a pair of rotating bodies 17 disposed away from each other at an interval corresponding to the horizontal width of the workpiece H and configured so as to be moved along a track curved in a circular or circular arcuate shape respectively, a drive mechanism 30 for synchronously moving the pair of rotating bodies along the curved track, and a pair of holding members 23 and 24 for holding respective ends in the horizontal width direction of the workpiece H to be sewn along the respective rotating bodies. Both right and left ends of the workpiece are held in the state of being spread in a curved surface shape along the curved track of the rotating bodies by the holding members 23 and 24, and the workpiece held by the holding members is moved along the curved track accompanying the movement of the rotating bodies. The workpiece is transferred smoothly in the vertical direction (Y direction) with the surface while maintaining a prescribed curved state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sewing material transfer device for a sewing machine in which a sewing product is stretched and held and transferred.

  Patent Document 1 discloses a sewing machine transfer device for a sewing machine that surrounds a plurality of rollers and expands and transfers the work in a substantially loop shape. This sewing product transfer apparatus includes a pair of supports that can slide in the lateral direction and a plurality of rollers that are rotatably supported by the pair of supports. A pulley is provided at each end of each roller, and a timing belt for rotating each roller in conjunction with the pulley is wound around each pulley. Between both timing belts, a pair of attachment members for holding both ends in the cloth length direction (longitudinal direction) of the sewing object are installed. The pair of attachment members holds the workpiece to be stretched so as to surround the plurality of rollers. The stretched and held workpiece is transferred in the horizontal direction (X direction) by the slide of the support, and is also transferred in the vertical direction (Y direction) by the rotation of the roller.

  In the conventional workpiece transfer device, the workpiece is held by holding both sides in the cloth length direction as described above. Therefore, even if the both ends of the cloth width direction (lateral direction) are not held or are held, the timing belt is held with an adhesive substance. However, if both ends in the cloth width direction of the sewing product are not held, the sewing product is not sufficiently stretched, so that the sewing position and its surroundings are likely to be loosened, and there is a possibility of causing a pattern shift. . In particular, when the sewing object is pulled as the sewing progresses, such a problem is likely to occur. Moreover, even when both ends in the cloth width direction of the fabric to be sewn are adhered and held, there is a possibility that the fabric to be sewn may be loosened due to a shift in the adhesion holding portion as the sewing progresses.

In order to eliminate these problems, the sewing product transfer device of Patent Document 2 includes a pair of holding members that hold both sides of the sewing product in the cloth width direction. The holding member is provided at a plurality of locations over the entire length of the timing belt. The holding member is formed with a recess for holding the sewing product, and a locking member for locking the sewing product is fitted into the recess. By providing such a holding member, it is possible to prevent loosening even when the sewing object is pulled with the progress of sewing, and it is possible to prevent misalignment of the sewing pattern.
JP 2002-102567 A JP 2005-80895 A

  By the way, the to-be-sewn material transfer apparatus of patent document 1 and patent document 2 is a structure which stretches and holds a to-be-sewn material so that a several roller may be surrounded. However, in this configuration, when the article to be sewn is located between adjacent rollers, the surface is substantially planar (straight) (curvature 0), and when the workpiece is surrounded by each roller, the surface is It becomes a state (large curvature) strongly curved along the roller. As a result, the degree of curvature of the surface of the work to be sewn changes extremely with the transfer in the front-rear direction during sewing. Therefore, even if both ends of the cloth width direction of the sewing object are held as in Patent Document 2, there is a possibility that the sewing position and the surrounding area may be loosened, and it is possible to reliably prevent the sewing pattern deviation. There wasn't.

  The present invention has been made in view of the above points, and an object of the present invention is to make it possible to effectively prevent loosening of a sewing product at a sewing position with progress of sewing, and to prevent a sewing pattern deviation. An object of the present invention is to provide a workpiece transfer device.

  In order to solve the above-mentioned problems, the sewing machine transfer device for a sewing machine according to the present invention is arranged to be separated from each other at an interval corresponding to the width of the sewing product, and moves along a track curved in a circular or arcuate shape. A pair of rotating bodies configured as described above, a drive mechanism for moving the pair of rotating bodies synchronously along the curved track, and each end in the width direction of the sewing product A pair of holding members for holding along each of the holding members, and holding the sewing product in a curved surface shape along the curved track of the rotating body by the holding members. The sewing object held by a member moves along the track as the rotating body moves.

  According to this configuration, by holding each end portion in the width direction of the sewing product along each of the pair of rotating bodies, the sewing product is moved along a circular or arcuate path of the rotating body. Thus, the workpiece to be sewn can be transported along the track curved in the shape of a circle or arc as the rotating body rotates. The transfer of the sewing product along the curved track causes the sewing product to be fed in the vertical direction (Y direction). As a result, the surface of the workpiece is smoothly transferred in the longitudinal direction (Y direction) while maintaining a constant curved surface. Therefore, according to the present invention, when the sewing product is moved in the Y direction as the sewing progresses, the curved state of the surface of the sewing product is not changed, so that the sewing product stretched and held at the sewing position is eliminated. It is possible to effectively prevent loosening of objects, and to surely prevent pattern deviation from appearing on the finished product.

  As an example, a support member may be provided between the pair of rotating bodies so as to support the workpiece to be sewn and held along the curved surface along the curved surface. According to this, since the workpiece that is held in a curved surface shape with respect to the moving body by the holding member can be further supported from below along the curved surface, the transfer of the sewing product by the rotating body is further improved. It can be done smoothly. In addition, since the workpiece is supported in a curved surface shape between the pair of rotating bodies, even when the workpiece is pulled between the pair of rotating bodies, the sewing product at the sewing position is more likely to be loosened. It can be effectively prevented. As described above, when the support member is provided at least around the shuttle base of the sewing machine, it is possible to more reliably prevent the product to be sewn at the sewing position from being loosened.

  In addition to the above-described configuration, the sewing product transfer device according to the present invention relatively slides the pair of rotating bodies, the sewing machine head, and the pot base corresponding thereto in the width direction of the sewing product. A slide mechanism. The relative sliding of the sewing product in the lateral width direction brings the sewing product held by the rotating body and the sewing machine head relatively in the lateral direction (X direction). Therefore, the workpiece and the sewing head can be relatively sent in the horizontal and vertical directions (X and Y directions) according to the sewing pattern.

  As an example, the slide mechanism supports the pair of rotating bodies so as to be rotatable in a direction along the circular or arc-shaped curved track, and together with the supported pair of rotating bodies, the width direction of the sewing product A support member configured to slide in the horizontal direction of the sewing product, and held by the holding member together with the rotating body as the support member slides. The sewn product thus moved moves in the lateral width direction. In this case, the sewing head and the pot base do not move, and the pair of rotating bodies move in the lateral width direction of the sewing product, so that the sliding mechanism can be simplified.

  As another example, the slide mechanism includes a connecting portion that connects the sewing head and the pot base corresponding thereto to a sewing machine frame so as to slide integrally in a lateral width direction of the sewing product, and the connecting portion. A sliding drive unit that slides the sewing product in the lateral width direction of the sewing product, and the sewing head and the pot base corresponding thereto move in the lateral width direction of the sewing product as the connecting portion slides. . In this case, the pair of rotating bodies do not move in the width direction of the sewing product, and the sewing machine head and the hook base move in the width direction of the sewing product, so that the mechanism of the rotating body can be simplified.

  According to the sewing material transfer device for a sewing machine according to the present invention, it is possible to effectively prevent the sewing product from becoming slack as the sewing progresses, and to prevent a sewing pattern shift.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the term “inside” refers to the side close to the center viewed from the front of the sewing machine described later. The left and right indicate the left and right sides as viewed from the front of the sewing machine, respectively, and the vertical and horizontal directions indicate the front-rear and left-right directions as viewed from the front of the sewing machine. .

[First Embodiment]
FIG. 1 is a front view of a multi-head embroidery sewing machine (hereinafter simply referred to as “sewing machine”) provided with a workpiece transfer device according to a first embodiment of the present invention, and FIG. 2 is a side sectional view of the sewing machine. It is II sectional drawing of FIG. This sewing machine includes a sewing machine frame 1, a plurality of (four in the figure) sewing heads 2, a pot base (bed) 3 having a hook 4 corresponding to each sewing head 2, and a sewing product transfer device 5. . The workpiece transfer device 5 includes a pair of base materials 6 and 6 slidable in a lateral direction (hereinafter referred to as “X direction”) with respect to the sewing machine frame 1, and the pair of base materials 6 and 6. And a pair of rotating bodies 17 and 17 supported rotatably. The rotating bodies 17 and 17 are configured to rotate in a rotation direction around the central axis extending in the X direction (hereinafter referred to as “Y direction”). In the following description, a pair of members having the same reference numerals that are installed symmetrically are described with reference to one member, except for a case where it is explicitly described that they are either left or right. Indicates a pair of left and right members.

  As shown in FIG. 2, the base 6 is a substantially flat plate member having arm portions 6 a extending in three directions at equal intervals from the center toward the outside. A timing pulley 16 having a tooth (not shown) formed on the outer periphery is pivotally supported at the tip of each arm portion 6a. On the outer periphery of the substrate 6, a circular annular rotating body 17 that is rotatably supported by each timing pulley 16 is installed. As shown in FIG. 1, both the base materials 6 and 6 are arranged with a predetermined interval in the X direction, and are connected to each other by a plurality of connecting rods 7. In the vicinity of the center of the base material 6, as shown in FIG. 2, a punch hole 8 for penetrating the lower frame 1 a of the sewing machine frame 1 is formed. A base 9 is fixed to the upper end of the punch hole 8.

  FIG. 3 is a front view showing the right substrate 6 and its surroundings, and FIG. 4 is a front view showing the left substrate 6 and its surroundings. In these figures, the substrate 6 is shown in cross section. The base 9 is engaged with the lower frame 1a by a slide drive mechanism 10 so as to be slidable in the X direction. The slide drive mechanism 10 includes a rail 11 fixed to the upper surface of the lower frame 1 a and a slider 12 fixed to the lower surface of the base 9 and slidably engaged with the rail 11. In addition, a moving element 14 is fixed to the right base 6, and a screw rod 13 is screwed to the moving element 14. The screw rod 13 has an axial direction extending in the X direction, and a right end is connected to a motor shaft of an X drive motor 15 fixed to the upper surface near the right side of the lower frame 1a. The combination of the base material 6 and the X drive motor 15 is a slide mechanism that slides the pair of rotating bodies 17 in the width direction of the sewing object H with respect to the sewing machine head 2 and the pot base 3 corresponding thereto. Equivalent to.

  FIG. 5 is an enlarged perspective view showing a part of the rotating body 17, and FIG. 6 is a cross-sectional view of the rotating body 17. In FIG. 5, for the purpose of explanation, a part of the rotating body 17 and a holding member 23 described later is cut out and a cross section thereof is also illustrated. The rotating body 17 is formed in a circular shape with a constant width, and a timing belt 18 having teeth that mesh with the teeth of the timing pulleys 16 is affixed to the inner periphery of the rotating body 17. . Thereby, the rotating body 17 is supported in a state where the timing belt 18 and each timing pulley 16 are engaged with each other. On the other hand, as shown in FIGS. 2 to 4, a Y drive motor 19 is fixed to the arm portion 6 a extending downward from the base material 6. A drive pulley 20 is fixed to the motor shaft of the Y drive motor 19. A driven pulley 22 is fixed to the rotating shaft of the timing pulley 16 that is pivotally supported by the arm portion 6a extending downward. A timing belt 21 is suspended between the driving pulley 20 and the driven pulley 22. Accordingly, when the Y drive motor 19 is driven, the timing pulley 16 rotates and the rotating body 17 rotates. Since the left and right Y drive motors 19 and 19 are fixed so that their rotation axes are opposite to each other, the Y drive motors 19 and 19 are controlled to rotate by the same amount in opposite directions. The rotating bodies 17 and 17 are rotationally controlled in synchronization with the same direction. The Y drive motor 19, the drive pulley 20, the driven pulley 22, the timing belt 21, the timing pulley 16, and the like constitute a rotation drive mechanism 30 that rotates the rotating body 17.

  As shown in FIG. 5, a holding member 23 is fixed to the outer periphery of the rotating body 17. The holding member 23 is formed in a circular ring with a constant width, and the inner end side protrudes inward from the rotating body 17 and is fixed. A concave portion 23a having a substantially semicircular cross section is formed on the entire outer surface of the portion protruding inward of the rotating body 17. As shown in FIG. 6, a stopper member 24 for locking the sewing product H is fitted into the recess 23 a. The stop member 24 is a string-like member having a circular cross section made of an elastic member such as urethane rubber.

  FIG. 7 is an enlarged view of a part of FIG. 2, and FIG. 8 is a perspective view showing a part of the components of the sewing product transfer device 5. As shown in these drawings, a support member 25 fixed to the sewing machine frame 1 is installed around the pot base 3. The support member 25 is formed of a substantially rectangular plate-like member formed in an arcuate surface shape, and is installed along the lower surface of the sewing product H held by the pair of rotating bodies 17 and 17 around the pot base 3. ing. An opening 25 a for exposing the pot base 3 is provided at a position corresponding to the pot base 3. Thereby, the support member 25 supports the to-be-sewn material H around the sewing position from the lower surface side. Further, the front and rear end sides 25b of the support member 25 are slightly bent downward. As a result, when the workpiece H moves along the upper surface of the support member 25 in the Y direction, it does not have to be caught by the end side 25b, so that the workpiece H moves in the same direction smoothly. Become.

  The specific shape of the support member 25 is not limited to the above, and may be any other shape. For example, the support member 25 is divided into a plurality of members in the X direction or the Y direction. May be. Moreover, you may comprise so that the area of the part which supports the to-be-sewn material H can be expanded / contracted by making the divided | segmented at least any member movable. Furthermore, the installation of the support member 25 can be omitted if unnecessary.

  In order to hold the sewing product H in the sewing product transfer device 5 having the above-described configuration, the end side (end portion) in the cloth width (lateral width) direction of the sewing product H is positioned on the concave portion 23a of the holding member 23, and As shown in FIG. 6, the stopper member 24 is sequentially pushed into the recess 23 a and fitted in the circumferential direction of the rotating body 17 from above. Thereby, the to-be-sewn material H is hold | maintained in the state extended in cylindrical surface shape (curved surface shape) between them along the outer peripheral surface of a pair of holding member 23,23.

  When the X drive motor 15 is driven in a state where the workpiece H is held by the pair of rotating bodies 17 and 17 in this way, the pair of screws connected by the connecting rod 7 by the screw feed by the screw rod 13. When the base materials 6 and 6 are integrally slid in the X direction, the rotating body 17 and the holding member 23 supported by the base material 6 are slid in the X direction, and the workpiece H is transferred in the X direction. On the other hand, if the Y drive motor 19 is driven, the to-be-sewn product H is transferred in the Y direction by rotating the rotator 17 and the holding member 23 together. Typically, the X drive motor 15 is driven according to the X width data of one stitch in accordance with the sewing pattern to be applied to the workpiece H, and the Y drive motors 19, 19 are driven according to the Y width data of one stitch. Is driven.

  According to the workpiece transfer device 5, the workpiece H is stretched and held by the rotating body 17 and the holding member 23 in a cylindrical surface (curved surface) shape along the rotation direction of the rotating body 17, and in this state, the article to be sewn is held. The sewing product H can be transferred. Thereby, the to-be-sewn product H is transferred in the X direction and the Y direction while the surface thereof maintains a certain degree of curvature. Therefore, unlike the conventional sewing product transfer apparatus having a plurality of rollers, the sewing position and the degree of curvature at the periphery thereof do not change with the transfer of the sewing product. As a result, it is possible to effectively prevent looseness from occurring at the sewing position and the surrounding sewing object, so that there is no need for sewing pattern displacement.

  Further, since the support member 25 is provided, the sewing object H held in a cylindrical surface by the rotating bodies 17 and 17 can be supported along the cylindrical surface, so that the sewing object H becomes the rotating bodies 17 and 17. Even when pulled between the two, it is possible to effectively prevent looseness from occurring at the sewing position and the surrounding sewing object H. Further, the workpiece H can be smoothly transferred by the rotating bodies 17 and 17.

  Moreover, in this embodiment, although the both ends (both ends) of the cloth width direction of the to-be-sewn product H are hold | maintained by the holding members 23 and 23, in addition to this, the both ends of the to-be-sewn object H of the cloth length direction are added. You may comprise so that a edge | side may also be hold | maintained. FIG. 8 shows a case where a pair of holding rods 26 and 26 are provided as an example. The pair of holding rods 26, 26 extend in the X direction and are spanned between the pair of holding members 23, 23 while being spaced apart from each other by a predetermined distance in the Y direction. Further, each holding bar 26 is attached with an original fabric clip 27 for clamping the sewing product H. The original fabric clip 27 grips a part of the sewing product H located on the holding rod 26 with the holding rod 26. The pair of holding rods 26 and 26 and the original fabric clips 27 and 27 hold both ends of the fabric H in the cloth length direction. It should be noted that the distance between the pair of holding rods 26 and 26 is desirably a width that allows an operator to pass the hand between them. As a result, even when the sewing object H is stretched and held by the sewing object transfer device 5, if the holding rods 26 and 26 are positioned in front of the pot base 3, the space between the holding rods 26 and 26 is maintained. The lower thread set in the hook 4 can be exchanged by inserting a hand into. In addition, when it is not necessary to hold | maintain the both ends of the cloth length direction of the to-be-sewn material H, the holding hook 26 and the original fabric clip 27 can also be abbreviate | omitted.

[Second Embodiment]
Next, a sewing machine provided with a workpiece transfer device according to a second embodiment of the present invention will be described. In the drawings and the description thereof according to the second embodiment, parts common to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In addition, matters other than those described below are the same as those in the first embodiment.

  FIG. 9 is a front view of the sewing machine according to the second embodiment, and FIG. 10 is a side sectional view of the sewing machine (II-II sectional view of FIG. 9). The sewing machine head 2 and the pot base 3 included in the sewing machine of the first embodiment are configured not to move in the X direction with respect to the sewing machine frame 1. On the other hand, the sewing machine head 33 and the pot base 34 provided in the sewing machine of the present embodiment are configured to be slidable integrally in the X direction with respect to the sewing machine frame (the upper frame 31 and the lower frame 32). .

  The configuration will be described in detail. Each sewing head 33 provided in the sewing machine of the present embodiment is fixed to two mounting plates 36 and 36, and each mounting plate 36 is a slide fixed to the front surface of the upper frame 31. The rail 37 is slidably engaged in the X direction. Thereby, each sewing head 33 slides integrally in the X direction. As shown in FIG. 10, a substantially flat base 38 that protrudes horizontally toward the front is fixed to the front surface of the lower frame 32, and a stud 39 is interposed on the upper surface of the base 38. A rail base 40 is fixed. On the other hand, each pot base 34 is fixed to a mounting plate 41, and the mounting plate 41 is slidably engaged in the X direction along a slide rail 42 fixed to the rail base 40. Accordingly, the pot bases 34 are also slid integrally in the X direction.

  Furthermore, as shown in FIG. 9, a connecting plate 43 for connecting these is attached between the mounting plate 36 and the mounting plate 41. The connecting plate 43 is a flat plate-like member formed in a substantially U shape in the horizontal direction, and is fixed to the front surface of one end of the mounting plate 36 and the mounting plate 41. A color changing mechanism 44 for moving the needle bar case of the sewing head 33 to place the sewing needle at a selected position is provided on the front surface of the connecting plate 43. The color changing mechanism 44 has a well-known configuration provided in a conventional sewing machine, and thus detailed description thereof is omitted here.

  A slide drive mechanism 45 for driving the connecting plate 43 is also provided. As shown in FIG. 10, the slide drive mechanism 45 is attached to the front surface of a plate 46 installed between the upper frame 31 and the lower frame 32, and is fixed to the plate 46 as shown in FIG. A ball screw 48 rotatably supported with respect to 47, a mover 49 fixed to the back surface of the connecting plate 43 and screwed with the ball screw 48, and a drive motor 50 for rotating the ball screw 48. Yes. Accordingly, when the drive motor 50 is driven, the attachment plate 36 and the attachment plate 41 are slid in the X direction via the connecting plate 43 by the screw feed by the ball screw 48, so that the sewing machine head 33, the pot base 34, and The color changing mechanism 44 slides integrally in the X direction. These members 36, 37, 41, 42, 43 connect the sewing machine head 33 and the hook base 34 corresponding thereto so as to slide integrally with the sewing machine frames 31, 32 in the lateral width direction of the sewing object H. Function as a connecting part. Further, the combination of these members 36, 37, 41, 42, 43 and the slide drive mechanism 45 corresponds to a slide mechanism that slides the sewing machine head 33 and the pot base 34 corresponding thereto in the lateral width direction of the sewing product H. .

  FIG. 11 is a perspective view showing an end portion on the right side of the workpiece transfer device 51. The workpiece transfer device 5 according to the first embodiment includes a base material 6 that is slidable in the X direction, and the rotating body 17 is rotated by the base material 6 in addition to the rotation operation (movement in the Y direction). It was possible to slide in the direction. On the other hand, in the workpiece transfer device 51 of the second embodiment, since the base material 6 is omitted, the rotating body 17 can only rotate (move in the Y direction). It does not slide in the direction.

  The configuration will be described in detail. The three timing pulleys 16 included in the workpiece transfer device 51 are respectively an upper bracket 52 fixed to the upper surface of the lower frame 32 and a lower bracket fixed to the lower surface of the lower frame 32. The bracket 53 and a motor bracket 54 fixed to the front surface of the lower frame 32 via a support 32a are pivotally supported. A Y drive motor 55 is fixed to the motor bracket 54, and a drive gear 56 is fixed to the motor shaft of the Y drive motor 55. Further, a driven gear 57 that meshes with the drive gear 56 is fixed to the rotating shaft of the timing pulley 16 that is pivotally supported by the motor bracket 54. As a result, when the Y drive motor 55 is driven, the timing pulley 16 pivotally supported by the motor bracket 54 rotates and the rotating body 17 rotates. The Y drive motor 55, the drive gear 56, the driven gear 57, the timing pulley 16, and the like constitute a rotation drive mechanism 70 that rotates the rotating body 17.

  In this sewing product transfer device 51, if the sewing object H is held by the rotating body 17 and the Y drive motor 55 is driven, the rotating body 17 and the holding member 23 rotate, whereby the sewing object H rotates. Are transferred in the Y direction. On the other hand, when the drive motor 50 is driven, the sewing head 33, the pot base 34, and the color changing mechanism 44 are integrally slid in the X direction with respect to the rotating body 17. Therefore, the relative movement in the Y direction of the sewing object H with respect to the sewing head 33 and the hook base 34 is performed by the rotation of the rotating body 17, and the relative movement in the X direction is performed by the sliding of the sewing head 33 and the hook base 34. Done.

  Moreover, the to-be-sewn material transfer apparatus 51 is provided with the support member 58 from which the shape differs from the support member 25 of 1st Embodiment. The support member 58 has a substantially cylindrical shape having substantially the same diameter as the rotating body 17, is disposed between the pair of rotating bodies 17, 17, and is fixed to the lower frame 32. A portion of the support member 58 that faces each pot base 34 is provided with a slit 58a that is cut out in a straight strip shape with the same width as the pot base 34 along the X direction. Further, a window 59 for exchanging the lower thread set in each hook 35 is formed at a position corresponding to the front of each hook base 34.

  According to the bearing member 58 having such a shape, the workpiece H that is stretched and held in a cylindrical surface shape by the rotating bodies 17 and 17 can be supported from the inside along the cylindrical surface. The workpiece H can be smoothly transferred by the rotation of. In particular, since the support member 58 is formed in a substantially cylindrical shape, the workpiece H can be supported over substantially the entire circumference in the circumferential direction. Further, even when the sewing object H is pulled between the pair of rotating bodies 17 and 17, it is possible to effectively prevent the sewing position and the sewing object H around the sewing position from being loosened.

  In addition, as shown in FIG. 11, in this embodiment, similarly to the first embodiment, holding hooks 26 and 26 that hold both ends in the fabric length direction of the workpiece H may be provided.

  12 and 13 are views showing a support member 60 having another shape, FIG. 12 is a perspective view showing the right end of the support member 60, and FIG. 13 is an enlarged view of the periphery of the pot base 34 in the support member 60. FIG. The support member 60 is similar to the support member 58 in that it has a substantially cylindrical shape, but the width of the slit 60a provided in the portion facing the pot base 34 is narrower than the width of the slit 58a of the support member 58. Yes. Thereby, the slit 60a is opposed only to the sewing position. The needle plate 61 fixed to the upper surface of the pot base 34 includes a protrusion 62 at the sewing position. Therefore, only the protrusion 62 at the sewing position is exposed from the slit 60 a, and the upper portion of the hook base 34 excluding the sewing position is covered with the support member 60. According to this support member 60, since the width of the slit 60a is extremely small, there is no possibility that the workpiece H is slack even when the workpiece H is transferred on the slit 60a.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible.

  For example, the case where the sewing product transfer device according to the above-described embodiment is shown in a case where the sewing product H is stretched and held in a cylindrical surface shape by the circular annular rotary body 17 and the holding member 23, but the rotary body according to the present invention. And the holding member may hold | maintain the to-be-sewn material H in the circular arc surface shape which makes only a part of cylinder other than said cylindrical surface shape.

  In addition, the holding member that holds both ends in the cloth width direction of the workpiece is not limited to the one provided with the concave portion 23a and the stopper member 24 fitted to the concave portion 23a shown in the above embodiment. In addition, for example, it may be provided with a protrusion and a clip that holds the protrusion.

  Further, only one Y drive motor 19, 55 may be provided, and the rotational motion of the one Y drive motor 19, 55 may be distributed to the pair of rotating bodies 17, 17.

It is a front view of the sewing machine provided with the to-be-sewn material transfer apparatus concerning 1st Embodiment of this invention. It is a sectional side view (II sectional drawing of FIG. 1) of a sewing machine. It is a front view which shows the base material of the right side, and its periphery. It is a front view which shows the base material on the left side, and its periphery. It is a perspective view which expands and shows a part of rotary body. It is sectional drawing of a rotary body. It is a figure which expands and shows a part of FIG. It is a perspective view which shows a part of component of a to-be-sewn material transfer apparatus. It is a front view of the sewing machine provided with the to-be-sewn material transfer apparatus concerning 2nd Embodiment of this invention. It is a sectional side view (II-II sectional view of Drawing 9) of a sewing machine. It is a perspective view (partial cross section figure) which shows the edge part of the right side of a to-be-sewn material transfer apparatus. It is a figure which shows the support member of another shape. It is a figure which shows the support member of another shape.

Explanation of symbols

1 Sewing machine frame 2 Sewing head 3 Pot base (bed)
4 Hook 5 Sewing Product Transfer Device 6 Base Material 10 Slide Drive Mechanism 15 X Drive Motor 16 Timing Pulley 17 Rotating Body 19 Y Drive Motor 23 Holding Member 25 Supporting Member 26 Holding Rod 27 Raw Material Clip 30 Rotation Driving Mechanism 31 Upper Frame ( Sewing machine frame)
32 Lower frame (sewing frame)
33 Sewing machine head 34 Pot base (bed)
35 Hook 45 Slide drive mechanism 50 Drive motor 51 Sewing material transfer device 55 Y drive motor 58 Bearing member 59 Window 60 Bearing member 70 Rotation drive mechanism H Sewing object

Claims (6)

A pair of rotating bodies (17) arranged to be separated from each other at an interval corresponding to the lateral width of the sewing object (H) and configured to move along a circular or arcuate track,
A drive mechanism (30; 70) for moving the pair of rotating bodies (17) synchronously along the curved path;
A pair of holding members (23, 24) for holding each end in the width direction of the sewing product (H) along each of the rotating bodies (17);
With
The holding member (23, 24) holds the sewing product (H) in a curved surface along the curved path of the rotating body (17), and the holding member (23, 24). The sewing product transfer device (5; 51) for a sewing machine, wherein the sewing product (H) held by the sewing machine moves along the curved track as the rotating body (17) moves. Between the pair of rotating bodies (17), a support member (25) that supports the sewing object (H) that is stretched and held along the rotating body (17) along the curved surface. 58; 60),
The sewing machine workpiece transfer device (5; 51) according to claim 1, characterized in that it is a sewing machine.   The sewing machine workpiece transfer device (5; 51) according to claim 2, wherein the support member (25; 58; 60) is provided at least around the hook base (3; 34) of the sewing machine. A slide mechanism (sliding mechanism) for relatively sliding the pair of rotating bodies (17), the sewing machine head (2; 33) and the pot base (3; 34) corresponding thereto in the lateral width direction of the sewing object (H). 6, 15; 36, 37, 41, 42, 43, 45),
The sewing machine transfer device (5; 51) according to any one of claims 1 to 3, further comprising: The slide mechanism (6, 15)
While the pair of rotating bodies (17) are supported rotatably in a direction along the circular or arcuately curved track, the width of the sewing product (H) together with the supported pair of rotating bodies (17). A support member (6) configured to slide in a direction;
A slide drive section (15) for sliding the support member (6) in the lateral width direction of the sewing product (H);
The workpiece (H) held by the holding member (23, 24) together with the rotating body (17) moves in the lateral width direction as the support member (6) slides. Sewing machine article transfer device (5) according to claim 4. The slide mechanism (36, 37, 41, 42, 43, 45)
Connecting portions (36, 37, 41) for connecting the sewing head (33) and the pot base (34) corresponding thereto so as to slide integrally with the sewing machine frame in the lateral width direction of the sewing object (H). , 42, 43), and a slide drive unit (45) for sliding the connecting portions (36, 37, 41, 42, 43) in the lateral width direction of the sewing product (H),
The sewing head (33) and the pot base (34) corresponding to the sewing head (33) move in the lateral width direction of the sewing product (H) as the connecting portions (36, 37, 41, 42, 43) slide. The sewing machine transfer device (51) according to claim 4, characterized in that:

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