JP5241406B2 - Loop material feeder - Google Patents

Description

  The present invention relates to a loop material supply device that supplies a loop material to a sewing position of a sewing machine that sews a loop material constituting a belt loop to a sewn product body.

  Conventionally, for example, a long loop constituting a belt loop in order to form a belt loop for inserting a belt through various sewing bodies such as a waist part of a pant or a skirt, and a waist part or a sleeve part of a coat. A sewing machine is used to sew a material to a sewing product body, and a loop material supply device is used to supply a long loop material to a sewing position of the sewing machine.

  As an example of the shape of the belt loop that is sewn to the sewing product body by the sewing machine by supplying the loop material by such a loop material supply device, as shown in FIG. As shown in FIG. 9, there is a shape in which one end portion 51a of the loop member 51 is bent in a Z shape and the other end portion 51b is bent in a U shape.

  Here, the loop material supply device used when forming a belt loop having a shape as shown in FIG. 8 includes a clamping means for holding the loop material 51 and moving it to the sewing position of the sewing machine, and sewing the sewing machine by the clamping means. It has a pair of fork members for bending both ends of the loop member 51 moved to the position into a U shape. Each of the fork members includes a pair of shaft-shaped support portions that sandwich the loop material 51 in the thickness direction, and each support portion has an axial direction intersecting the longitudinal direction of the loop material 51. Are arranged. Such a loop material supply device sandwiches the loop material 51 between both support portions, rotates one of the fork members in one direction, and rotates the other fork member in the other direction, Both end portions of the loop member 51 are bent in a U shape on the back side (sewn product main body side) of the loop member 51. The sewing machine presses both ends of the loop material 51 that are bent by a pair of pressers, and then simultaneously raises and lowers the pair of sewing needles so that both ends of the loop material 51 are sewn to the sewing product body 52 at the same time. (For example, see Patent Document 1).

  Further, the loop material supply device used when forming a belt loop having a shape as shown in FIG. 9 moves the clamping means that sandwiches the loop material 51 in the Y direction parallel to the longitudinal direction of the loop material 51, and By moving the sewing position of the loop material 51 with a sewing machine and sewing the loop material 51, one end 51a of the loop material 51 is bent into a Z shape and sewn to the sewn product main body 52.

  Further, the loop material supply device has one fork member having a pair of support portions for bending the other end portion 51b of the loop material 51 into a U shape. In such a loop material supply device, after the clamping means is moved in the Y direction and the one end portion 51a of the loop material 51 is bent in a Z shape, the loop material 51 is sandwiched between the two support portions. The fork member is inserted in the X direction, which is the width direction of the loop member 51, into the other end portion 51b of the loop member 51 and rotated to bend the other end portion 51b into a U-shape on the back side of the loop member 51 and sew The object body 52 is sewn (for example, MHA-B400 manufactured by Hams).

JP 2000-42273 A

  However, according to the loop material supply device used when the belt loop having the shape shown in FIG. 8 is formed, the sewing position of the loop material 51 is appropriately moved with respect to the sewn product main body 52 while sandwiching the belt loop. Since the clamping means and the moving means are not provided, the belt loop cannot be bent in a Z shape, and the belt loop having the shape shown in FIG. 9 cannot be formed. Further, the loop material supply device used in forming the belt loop having the shape shown in FIG. 9 includes only one fork member and a rotary actuator that rotates the fork member. As this rotary actuator, a relatively inexpensive pneumatic drive type or solenoid drive type is used, but their rotation angle is fixed. Therefore, in one rotary actuator, only the rotation angle required to bend one side of the belt loop at both ends in a U shape can be obtained, and both ends of the belt loop cannot be bent into a U shape. A belt loop having the shape shown in the figure could not be formed.

  For this reason, in order to form the belt loop shape shown in FIG. 8 and FIG. 9, a plurality of loop material supply devices corresponding to each loop shape are required, which is uneconomical.

  The present invention has been made in view of these points, and a loop capable of flexibly responding to a change in belt loop shape with a single loop material supply device and capable of forming various belt loop shapes. It aims at providing a material supply apparatus.

  In order to achieve the above object, the loop material supply device according to the first aspect of the present invention is characterized in that the loop material is sandwiched between the holding means for holding the loop material constituting the belt loop, and the belt loop is rotated to rotate the loop. A single fork member that bends the end of the material, a rotation drive mechanism that rotates the fork member, a moving means that moves the clamping means and the fork member relative to the sewing product body, at least the clamping means, and the rotation In a loop material supply device for a belt loop sewing machine having a drive mechanism and a control means for controlling the moving means, the rotational drive mechanism moves the fork member forward and backward from an initial position serving as a reference in the rotational direction. And the control means sews the sewing material body in a shape in which both ends of the loop material are bent in a U-shape. In addition, when bending one end of the loop material, the fork member is rotated in one of the forward and reverse directions from the initial position, and when the other end portion of the loop material is bent, the fork member is Rotating in the other direction of the forward / reverse direction from the initial position.

  According to the first aspect of the present invention, the fork member can be rotated in the forward and reverse directions from the initial position that serves as a reference for the rotation direction, and when the one end of the loop material is bent, the fork member is moved from the initial position to the normal position. When the other end of the loop material is bent in one direction of the reverse direction and the other end of the loop material is bent, the fork member is rotated in the other direction of the forward / reverse direction from the initial position, so that both ends of the loop material are It can be sewn to the sewn product body in a shape bent in a letter shape. Thus, the loop material supply device can only have a shape in which one fork member and a rotary actuator for rotating the fork member are bent in a Z shape at one end and a U shape in the other end. Therefore, it is possible to form belt loops having various shapes such as a shape in which both ends of the loop material are bent in a U-shape.

  The loop material supply device according to the invention described in claim 2 is characterized in that, in the loop material supply device according to claim 1, a U-shape or a Z-shape is sewn to the sewn product main body. A storage means for storing a sewing program corresponding to the sewing of the bent shape of the end portion of the belt loop, and an arbitrary bent shape of the belt loop is selected from among the bent shapes of the belt loop stored in the storage means The control means is configured to rotate the fork member so that the fork member rotates in either the forward or reverse direction according to a sewing program of the bent shape of the belt loop selected by the operation means. This is in controlling the drive of the drive mechanism.

  According to the second aspect of the present invention, the storage means stores a sewing program corresponding to the sewing of a plurality of belt loops having different shapes, and the loop material supply apparatus stores each of the loop material supply devices stored in the storage means. By selecting an arbitrary belt loop shape from among the belt loop shapes in the operation means, the rotational drive of the rotational drive mechanism can be controlled to form a belt loop of the selected shape. Therefore, according to the loop material supply device, the operator can select a desired belt loop shape by the operation means, and the belt loop shape can be easily changed.

  The loop material supply device according to the invention described in claim 3 is characterized in that, in the loop material supply device according to claim 1 or 2, the rotational drive mechanism includes two rotary actuators as rotational drive sources. Each of the rotary actuators is configured to rotate the fork member in a different direction from an initial position in the rotation direction of the fork member.

  According to the third aspect of the present invention, when the both ends of the belt loop are bent by one fork member, the individual rotary actuators corresponding to different rotation angles are provided for each end. Both ends of the belt loop can be bent into a U shape, and belt loops having various shapes can be formed.

  Further, the loop material supply device according to the invention described in claim 4 is characterized in that, in the loop material supply device according to claim 1 or 2, the rotational drive mechanism can control the rotational phase as a rotational drive source. It is in the point equipped with a simple motor.

  According to the fourth aspect of the present invention, when the both ends of the belt loop are bent with one fork member, the rotational phase of the motor can be controlled according to a different rotation angle for each end. Both ends of the belt loop can be bent into a U shape.

  As described above, according to the loop material supply device of the present invention, the change of the belt loop shape can be flexibly handled by one loop material supply device, and the economic efficiency can be improved.

  Hereinafter, an embodiment of a loop material supply device according to the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a loop material supply device according to the present embodiment and a sewing machine for sewing the loop material supplied by the loop material supply device to a sewn product body, and FIG. 2 is a loop material supply of FIG. It is a block diagram which shows the structure of an apparatus.

  As shown in FIG. 1, the loop material supply device 1 according to the present embodiment includes a clamping means 3 that clamps the loop material 20 in order to supply the loop material 20 constituting the belt loop to the sewing machine 2. The clamping means 3 includes a first clamping member 5 that abuts on the upper surface of the loop material 20 and a second clamping member 6 that abuts on the lower surface of the loop material 20. The first clamping member 5 and the second clamping member 6 are close to each other. By doing so, the loop member 20 is sandwiched.

  An air cylinder 9 is attached to the clamping means 3 as a driving means for driving the first clamping member 5 and the second clamping member 6 in a direction in which they are in contact with and away from each other. The cylinder body 9 a of the air cylinder 9 is attached to the first clamping member 5, and the tip of the cylinder rod 9 b of the air cylinder 9 is the upper surface of the clamping means frame 7 to which one end of the second clamping member 6 is fixed. Is attached. A CPU 37 that controls the driving of each part of the loop material supply device 1 and the sewing machine 2 is configured so that both the clamping members 5 and 6 are brought into contact with each other and the loop material 20 is held and released.

  The clamping means frame 7 is connected to a support base 15 via a connection base 8 disposed on the rear side opposite to the side opposite to the sewing machine 2 in the clamping means 3, and the connection base 8 is connected to the support base 15. Thus, the clamping means 3 can be moved in the vertical direction via the coupling base 8 and the clamping means frame 7.

  A fork member 25 is provided on the side of the sandwiching means 3 in parallel with the sandwiching means 3, and the fork member 25 includes a support portion 25 a made up of a pair of shaft-like members. Both support portions 25a are arranged in the width direction of the loop member 20 sandwiched by the sandwiching means 3 in the axial direction, and the base portion of the fork member 25 is a fork mounting base 27 disposed behind the fork member 25. Is rotatably supported.

  As shown in FIGS. 3 to 5, the fork member 25 is connected to a rotation drive mechanism 26 for rotating the fork member 25 via a fork mounting base 27. The rotation drive mechanism 26 is disposed behind the fork member 25 and on the side of the coupling base 8, and the control means 17 is configured so that the fork member 25 is in a state where the loop member 20 is disposed between the support portions 25 a. , The ends 20a and 20b of the loop member 20 are bent into a U shape.

  The rotation drive mechanism 26 includes two pneumatic drive rotary actuators arranged side by side in the same X direction as the width direction orthogonal to the longitudinal direction of the loop member 20 in a state of being sandwiched by the sandwiching means 3. The two rotary actuators are arranged with their rotation axes parallel to the X direction. The front actuator 26a located on the fork member 25 side of the rotary actuators is configured so that the rotating shaft 26b of the front actuator 26a is correctly positioned from the initial position, with the two support portions 25a of the fork member 25 being aligned in the vertical direction. It is arranged to be rotated 90 ° in the direction. The other rear actuator 26c of the rotary actuators is disposed so as to rotate the rotation shaft 26d of the rear actuator 26c by 90 ° in the reverse direction from the initial position.

  The rotation shaft 26b of the front actuator 26a is connected to the actuator side gear 26e, and the actuator side gear 26e is rotatably supported by the fork mount 27. A fork side gear 26f is fixed to a base portion of the fork member 25 that is rotatably supported by the fork mounting base 27, and the actuator side gear 26e is engaged with the fork side gear 26f. The actuator side gear 26e and the fork side gear 26f are formed in a size that provides a 3: 1 speed ratio. Then, the control means 17 rotates the rotary shaft 26b by 90 ° in the forward direction by the rotational drive of the front actuator 26a, thereby moving the fork member 25 in the reverse direction by 270 ° via the actuator-side gear 26e and the fork-side gear 26f. It is designed to rotate.

  A flange 26g is connected to a surface of the front actuator 26a facing the rear actuator 26c, and a rotating shaft 26d of the rear actuator 26c is connected to the flange 26g. The control means 17 rotates the rotary shaft 26d by 90 ° in the reverse direction by the rotational drive of the rear actuator 26c, thereby rotating the entire front actuator 26a by 90 ° in the reverse direction, whereby the actuator side gear 26e and The fork member 25 is rotated 270 ° in the forward direction via the fork side gear 26f.

  As a result, the control means 17 drives the fork member 25 forward and backward so that the ends 20a and 20b of the loop member 20 are bent in a U-shape on the back side of the loop member 20 by driving the rotational drive mechanism 26. It can be rotated in the direction.

  Further, an X-direction drive cylinder 28 is provided behind the fork member 25 as X-direction drive means for reciprocating the fork member 25 in the X direction independently of the clamping means 3. The cylinder rod 28 a is connected to the fork mount 27. A guide shaft 29 having an axial direction extending in the X direction is inserted into the fork mounting base 27 on the side of the rotational drive mechanism 26 and the X direction drive cylinder 28, and the control means 17 is connected to the X direction drive cylinder 28. The fork member 25 is reciprocated in the X direction via the fork mount 27 by guiding the fork mount 27 in the X direction by the guide shaft 29 by the expansion and contraction of the cylinder rod 28a. Further, the cylinder body 28b and the guide shaft 29 in the X-direction drive cylinder 28 are supported by a fork frame 33 disposed behind the fork member 25, and the fork frame 33 can be pivoted up and down with respect to the connecting base 8. Is pivotally supported.

  Furthermore, a Z-direction drive cylinder 30 as a Z-direction drive means for moving the fork member 25 in the vertical Z direction independently of the clamping means 3 is provided behind the fork member 25. The cylinder rod 30 a of the drive cylinder 30 is connected to the lower end portion of the fork frame 33. The control means 17 moves the fork frame 33 in the vertical direction by expanding and contracting the cylinder rod 30a in the Z-direction drive cylinder 30 from the cylinder body 30b, and the fork member 25 via the guide shaft 29 and the fork mounting base 27. Is reciprocated in the Z direction.

  As described above, the fork frame 33 is connected to the fork member 25 via the guide shaft 29 and the fork mounting base 27 and is connected to the support 15th via the connection base 8. 15 integrally supports the clamping means 3 and the fork member 25.

  Further, the loop material supply apparatus 1 includes an X-direction moving unit 11 that moves the clamping unit 3 and the fork member 13 in the X direction that is the width direction of the loop material 51 as a moving unit of the clamping unit 3 and the fork member 13. Y direction moving means 12 that moves in the same Y direction as the longitudinal direction of the loop member 20 arranged at the sewing position of the sewing machine 2 and Z direction moving means 13 that moves in the up and down direction are provided. The X direction moving means 11 is connected to a support base 15 that integrally supports the sandwiching means 3 and the fork member 25, and the Y direction moving means 12 is connected to the support base 15 via the X direction moving means 11, and the Z direction. The moving means 13 is connected to the connecting table 8, and each moving means 11, 12, 13 moves the holding means unit 10 including the holding means 3 and the fork member 25 integrally. Then, the control means 17 holds the loop member 20 so as to supply the loop material 20 to the sewing position in the sewing machine 2 or to retract the non-sewn portion of the loop material 20 from the sewing position by driving the moving means 11, 12, 13. The means 3 is moved.

  Further, the control means 17 includes a storage means 18 for storing a sewing program for each operation of the loop material supply device 1, and the storage means 18 includes a sewing program corresponding to the sewing of the belt loops having different shapes. Is remembered. Then, the CPU 37 via the I / O interface 38, the first electromagnetic valve 39 that drives the front actuator 26a, the second electromagnetic valve 40 that drives the rear actuator 26c, and the fork X-direction electromagnetic that drives the X-direction drive cylinder 28. The valve 41 is connected to a fork Z-direction electromagnetic valve 42 that drives the Z-direction drive cylinder 30. Further, the CPU 37 via the I / O interface 38 includes a clamping means electromagnetic valve 43 that drives the air cylinder 9, an X-direction drive motor 11 a that drives the X-direction moving means 11, and a Y-direction that drives the Y-direction moving means 12. The drive motor 12a and the unit Z direction solenoid valve 48 that drives the unit Z direction cylinder 13a of the Z direction moving means 13 are connected to each other.

  Further, the loop material supply device 1 includes an operation means 35 including a touch panel (not shown) as input means for inputting operation settings of each part of the loop material supply device 1 and a display panel (not shown) for displaying the settings. Have. The control means 17 outputs display information to the display panel, and controls each part of the loop material supply device 1 and the sewing machine 2 based on each setting information input by the touch panel. In this operation means 35, by operating the touch panel based on the display on the display panel, an arbitrary belt loop shape can be selected from among the belt loop shapes stored in the storage means 18. ing.

  Based on the belt loop shape sewing program selected by the operation means 35, the control means 17 supplies each of the moving means 11, 12 so as to supply the sewing portion of the loop material 20 to the sewing position where the sewing machine 2 performs sewing. , 13 is driven to move the clamping means 3. When the sewing operation by the sewing machine 2 is started, the control means 17 moves the holding position of the loop material 20 by the holding means 3 while holding the loop material 20 by the holding means 3 based on the sewing program. The moving means 11, 12, 13 are driven to move the clamping means 3 so that both ends of the loop material 20 are bent into a desired shape. Further, the control means 17 controls the drive of the rotation drive mechanism 26 so as to rotate the fork member 25 in a predetermined forward / reverse direction based on the sewing program, or the X-direction drive cylinder 28 and the Z-direction drive cylinder 30. The drive is controlled.

  Next, a case where the loop material 20 is sewn to the sewn product main body 21 so that the one end 20a is bent in a Z shape and the other end 20b is bent in a U shape by the sewing machine 2 will be described.

  First, the control means 17 drives the X-direction moving means 11 to hold the holding means 3 in a state where the vicinity of one end 20a in the longitudinal direction of the loop member 20 is held, as shown in FIG. The loop member 20 moves so that one end 20a thereof is positioned at the sewing position of the sewing machine 2.

  Subsequently, when the presser 23 of the sewing machine 2 is lowered and the one end portion 20a of the loop member 20 is pressed, the control means 17 moves the Y direction moving means 12 and the Z direction moving means as shown in FIG. 6 (b). 13, the clamping means 3 is separated from the sewing position. During this time, the clamping position of the loop material 20 by the clamping means 3 moves from one end 20 a of the loop material 20 to the vicinity of the other end 20 b.

  Then, when sewing by the sewing machine 2 is started, the sewing machine 2 moves the sewing needle up and down and also places a sewing machine main body 21 as a cloth carrying means for carrying the sewing machine main body 21. The loop material 20 is sewn to the sewn product main body 21 by conveying the sewn product main body 21 by moving (first sewing).

  When the first sewing is completed, the sewing machine 2 moves up the mounting table 31 after raising the presser 23, and is one end that is slightly in the center in the longitudinal direction of the loop material 20 than the one end 20 a of the loop material 20. The sewn product main body 21 to which the loop material 20 is sewn is conveyed so that the vicinity of 20a is located at the sewing position of the sewing machine 2. At this time, as shown in FIG. 6C, the control means 17 of the loop material supply device 1 drives the Y-direction moving means 11, and the loop material supply device 1 holds the other end portion 20b. 3 is moved in the right direction (in the direction of arrow B shown in FIG. 6C) beyond the seam (first seam) by the first sewing (FIG. 6C). Thereby, the loop member 20 is folded back in a U shape so as to cover the first seam.

  Further, as shown in FIG. 6D, when the presser 23 of the sewing machine 2 is lowered and the loop member 20 is pressed by the presser 23, the control means 17 puts the clamping means 3 on the mounting table 31 of the sewing machine 2. It descends and the loop material 20 is stacked on the sewn product main body 21. Then, the sewing machine 2 moves the sewing needle up and down again and moves the mounting table 31 to convey the sewing product body 21 and sew the loop material 20 to the sewing product body 21 (second sewing).

  When the second sewing is completed, the sewing machine 2 raises the presser 23 and then moves the mounting table 31 so that the sewn product main body 21 is moved so that the vicinity of the other end 20b of the loop member 20 is located at the sewing position. Transport. At this time, the control means 17 of the loop material supply apparatus 1 controls the driving of the Y-direction moving means 11 and the Z-direction moving means 13 so that the clamping means 3 is once again at one end as shown in FIG. It moves in the upper left direction of 20a (arrow C direction shown in FIG. 6E). Thereby, the loop member 20 is folded back so as to cover the second seam, and the one end 20a is bent in a Z shape. At the same time, the clamping means 3 is moved so that the clamping position of the loop material 20 by the clamping means 3 moves to the other end portion 20 b of the loop material 20.

  Then, as shown in FIG. 6 (f), the control means 17 drives the X-direction drive cylinder 28 so that both the support portions 25a of the fork member 25 are in the initial position where both support portions 25a are aligned in the vertical direction. The fork member 25 is moved in a direction approaching the loop member 20 so that the loop member 20 is sandwiched therebetween. Subsequently, the control means 17 rotates the front actuator 26a by 90 ° in the forward direction, thereby reverse the fork member 25 as shown in FIG. 6 (g) via the actuator side gear 26e and the fork side gear 26f. It rotates 270 ° in the direction (counterclockwise in FIG. 6 (g)). As a result, the other end 20 b of the loop member 20 is bent in a U shape on the back side of the loop member 20. At this time, clamping of the other end portion 20b of the loop member 20 by the clamping means 3 is released.

  Then, as shown in FIG. 6 (h), the control means 17 drives the X-direction drive cylinder 28, moves only the fork member 25 in the direction away from the loop material 20, and extracts it from the loop material 20. The front actuator 26a is rotated 90 ° in the reverse direction to return the fork member 25 to the initial position. Subsequently, the sewing machine 2 descends the presser 23 and presses the other end portion 20b of the loop material 20, and then moves the mounting table 31 to transport the sewn product main body 21 while the loop material 20 is put on the sewn product main body 21. Sewing (third sewing). Accordingly, the loop material 20 can be sewn to the sewn product main body 21 by the sewing machine 2 so that the one end 20a is bent in a Z shape and the other end 20b is bent in a U shape. During this sewing operation, the control means 17 moves the clamping means 3 to a position where the loop material 20 is clamped by driving the X-direction moving means 11 and the Y-direction moving means 12 in preparation for the next feeding operation of the loop material 20. .

  Next, a case where the loop material 20 is sewn to the sewn product main body 21 so that both end portions 20a and 20b are bent in a U shape by the sewing machine 2 will be described. The detailed description of the same operation as when the loop member 20 is sewn to the sewn product main body 21 so that the one end 20a is bent in a Z shape and the other end 20b is bent in a U shape will be omitted.

  First, the control means 17 moves so that the sewing portion of the loop member 20 is located at the sewing position of the sewing machine, and then drives the X-direction drive cylinder 28, as shown in FIG. The fork member 25 is moved in a direction approaching the loop member 20 so that the vicinity of the one end portion 20a of the loop member 20 is sandwiched between both support portions 25a of the fork member 25 in a state where 25a is in the initial position.

  Subsequently, the control means 17 rotates the rear actuator 26c by 90 ° in the reverse direction, thereby rotating the front actuator 26a through the flange 26g by 90 ° in the reverse direction integrally with the rotating shaft 26d of the rear actuator 26c. As shown in FIG. 7B, the fork member 25 is rotated 270 ° in the forward direction (clockwise in FIG. 7B) via the actuator side gear 26e and the fork side gear 26f. As a result, the one end 20 a of the loop member 20 is bent in a U shape on the back side of the loop member 20.

  Next, the control means 17 drives the Z-direction drive cylinder 30 to lower the clamping means 3 and the fork member 25 together, and places the loop material 20 on the placement table 31. Then, as shown in FIG. 7C, when the vicinity of the one end portion 20a of the loop member 20 is pressed by the presser 23 in a state where the one end portion 20a is bent in a U shape, the control means 17 is moved in the X direction. The drive cylinder 28 is driven, and only the fork member 25 is moved rearward and extracted from the loop member 20. Then, the sewing machine 2 sews the loop material 20 to the sewn product main body 21 by moving the sewing needle up and down while transporting the sewn product main body 21 by moving the mounting table 31 (first sewing). During this time, the control means 17 drives the rear actuator 26c to rotate 90 ° in the forward direction to return the fork member 25 to the initial position.

  When the first sewing is completed, the sewing machine 2 moves the sewing machine main body 21 so that the vicinity of the other end 20b of the loop member 20 is located at the sewing position after raising the presser 23. At this time, as shown in FIG. 7 (d), the control means 17 bends the one end 20a of the loop material 20 into a U-shape with the other end 20b of the loop material 20 held by the holding means 3. The sandwiching means 3 is moved in the direction to move. Then, the control means 17 drives the X-direction drive cylinder 28 so that the fork is positioned so that the loop member 20 is sandwiched between the support portions 25a in a state where the support portions 25a are in the initial position. The member 25 is moved in a direction approaching the loop member 20.

  Subsequently, the control means 17 rotates the front actuator 26a by 90 ° in the forward direction to reverse the fork member 25 through the actuator side gear 26e and the fork side gear 26f as shown in FIG. It rotates 270 ° in the direction (counterclockwise in FIG. 7E). As a result, the other end 20 b of the loop member 20 is bent in a U shape on the back side of the loop member 20.

  Then, after the other end 20b of the loop member 20 is pressed by the presser 23, the control means 17 drives the X-direction drive cylinder 28 as shown in FIG. And the fork member 25 is returned to the initial position by rotating the front actuator 26a by 90 ° in the reverse direction. Subsequently, the sewing machine 2 moves the mounting base 31 to move the sewing needle up and down while transporting the sewing product main body 21 to sew the loop material 20 to the sewing product main body 21 (second sewing). Accordingly, the loop member 20 can be sewn to the sewn product main body 21 so that the both end portions 20a and 20b are bent in a U shape by the sewing machine 2.

  Next, the operation of this embodiment will be described.

  According to the present embodiment, the fork member 25 can be rotated in the forward and reverse directions from the initial position by the rotation drive mechanism 26 so that the end portions 20 a and 20 b of the loop material 20 are in contact with the back surface of the loop material 20. As a result, the loop material supply device 1 has a shape in which both end portions 20a and 20b of the loop material 20 are bent in a U shape, and one end portion 20a of the loop material 20 is bent in a Z shape, and the other end portion 20b is It becomes possible to form belt loops of various shapes such as a shape bent in a U shape.

  Therefore, the loop material supply device 1 according to the present embodiment can flexibly cope with the change of the belt loop shape, and there is no need to have a separate loop material supply device 1 for each belt loop shape.

  The storage means 18 stores a sewing program corresponding to the sewing of a plurality of belt loops having different shapes, and the loop material supply device 1 can select any one of the belt loop shapes stored in the storage means 18. When the shape of the belt loop is selected by the operation means 35, the rotational drive of the rotational drive mechanism 26 can be controlled to form the belt loop of the selected shape. Therefore, according to the loop material supply device 1, the operator can select a desired belt loop shape by the operation means 35, and the belt loop shape can be easily changed.

  Then, 2nd Embodiment of the loop material supply apparatus 1 which concerns on this invention is described.

  In the second embodiment, the two pneumatically driven rotary actuators in the first embodiment are replaced with motors capable of controlling the rotational phase. As shown in FIG. 10, the rotation drive mechanism 26 can control the rotation phase instead of the front actuator 26a, the rotation shaft 26b, the rear actuator 26c, the rotation shaft 26d, and the flange 26g constituting the first embodiment. The motor 26h is provided, and the rotating shaft 26i of the motor 26h is connected to the actuator side gear 26e.

  When the control means 17 drives the motor 26h to rotate forward and backward, the fork member 25 also rotates forward and backward.

  When the loop member 20 is sewn to the sewn product main body 21 using the second embodiment, the difference from the first embodiment is that the control means 17 drives the front actuator 26a and the rear actuator 26c in the motor. The only change is to drive 26h.

  That is, when the loop member 20 is sewn to the sewn product main body 21 so that the both end portions 20a and 20b are bent in a U shape, when the one end portion 20a of the loop member 20 is bent, the rotating shaft 26i is 90. When the control means 17 drives the motor 26h to rotate in the reverse direction, the fork member 25 is moved in the forward direction (see FIG. 7B) via the actuator side gear 26e and the fork side gear 26f. Rotate 270 ° clockwise (7 (b)).

  Further, when the other end portion 20b of the loop member 20 is bent, the control means 17 drives the motor 26h so that the rotating shaft 26i rotates in the positive direction by 90 °, whereby the fork as shown in FIG. The member 25 is rotated 270 ° in the reverse direction (counterclockwise in FIG. 7E).

  In addition, this invention is not limited to the said both embodiment, A various change is possible as needed.

The perspective view which shows one Embodiment of the loop material supply apparatus which concerns on this invention, and the sewing machine which sews the loop material supplied by this loop material supply apparatus to a sewing-body main body. The block diagram which shows the structure of the loop material supply apparatus shown in FIG. The perspective view which shows the fork member in the loop material supply apparatus of FIG. The side view which shows the fork member of FIG. The perspective view which shows each moving means in the loop material supply apparatus of FIG. (A)-(h) is a schematic side view which shows one Embodiment of each supply process of the loop material in the loop material supply apparatus of FIG. (A)-(f) is a schematic side view which shows one Embodiment of each supply process of a loop material with the loop material supply apparatus of FIG. Schematic perspective view showing an example of belt loop shape Schematic perspective view showing still another example of belt loop shape The perspective view which shows the fork member in other embodiment of the loop material supply apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loop material supply apparatus 2 Sewing machine 3 Clamping means 17 Control means 18 Memory | storage means 20 Loop material 20a One end part 20b Other end part 21 Sewing thing main body 25 Fork member 25a Support part 26 Rotation drive mechanism 26a Front actuator 26b Rotating shaft 26c Rear actuator 26d Rotating shaft 26e Actuator side gear 26f Fork side gear 26g Flange 27 Fork mount 28 X direction drive cylinder 28a Cylinder rod 28b Cylinder body 29 Guide shaft 30 Z direction drive cylinder 30a Cylinder rod 30b Cylinder body 33 Fork frame 35 Operating means

Claims (4)

Clamping means for clamping the loop material constituting the belt loop;
A single fork member that bends the end of the loop material by sandwiching and rotating the belt loop;
A rotation drive mechanism for rotating the fork member;
Moving means for moving the clamping means and the fork member with respect to the sewing product body;
In a loop material supply device for a belt loop sewing machine comprising at least the clamping means, the rotation drive mechanism, and a control means for controlling the moving means,
The rotational drive mechanism is capable of rotating the fork member in a forward and reverse direction from an initial position serving as a reference in the rotational direction,
In the case where the loop member is sewed to the sewn product main body in a shape in which both ends of the loop member are bent into a U shape, the control means is configured to move the fork member from the initial position when bending one end of the loop member. The loop material supply, wherein the fork member is rotated from the initial position to the other direction in the forward / reverse direction when the other end portion of the loop material is bent by rotating in any one direction of the reverse direction. apparatus. Storage means for storing a sewing program corresponding to sewing of the bent shape of the end portion of the belt loop when being sewn to the sewn product body, such as U-shape or Z-shape, and stored in the storage means An operation means capable of selecting an arbitrary bent shape of the belt loop among the bent shapes of the belt loop;
The control means controls the drive of the rotary drive mechanism so that the fork member rotates in either the forward or reverse direction according to a sewing program for the bent shape of the belt loop selected by the operating means. The loop material supply apparatus according to claim 1, wherein   2. The rotary drive mechanism includes two rotary actuators as a rotary drive source, and each of the rotary actuators rotates the fork member in a different direction from an initial position in the rotation direction of the fork member. Or the loop material supply apparatus of 2.   The loop material supply apparatus according to claim 1, wherein the rotation drive mechanism includes a motor capable of controlling a rotation phase as a rotation drive source.