JP2010075383A - Device and method for controlling belt loop sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the quality of a belt loop by preventing the deviation of the clamping position of a loop material by a clamping means and the detachment of the loop material from occurring by the clamping means and sewing the loop material to the intended position of a workpiece body. <P>SOLUTION: The process, after one end part 20a of the loop material 20 which is the first sewing part is sewn, in which the clamping means 2 clamping the loop material 20 passes through the lower part of a presser 23 and the loop material 20 is bent so as to cover the first sewing part, includes: a first step in which a control means 17 moves the clamping means 3 and a mounting table 31 in one direction which is the direction of passing through the lower part of the presser 23; and a second step in which the control means 17 moves the clamping means 3 in the first step and also moving the mounting table 31 in another direction opposite to the first direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, the loop material constituting the belt loop is clamped by the clamping means, and a plurality of sewing portions in the loop material are supplied to the needle drop points where the sewing is performed so that a predetermined belt loop shape is obtained. The present invention also relates to a control device for a belt loop sewing machine and a method for controlling a belt loop sewing machine that sequentially sew each of the sewing parts to a sewing product body.

  Conventionally, for example, in order to form a belt loop for inserting a belt into the body of various sewing products such as a waist part of a pant or a skirt, and a waist part or a sleeve part of a coat, a long belt constituting the belt loop is used. A belt loop sewing machine is used in which a loop material is sewn to the main body of the sewing product (see, for example, Patent Document 1). Further, such a belt loop sewing machine is provided with a loop material supply device that supplies a loop material to a needle drop point where sewing is performed in the belt loop sewing machine.

  About the step of sewing the loop material to the sewing product body with a conventional belt loop sewing machine, when forming a belt loop in which one end of the loop material is Z-shaped and the other end is bent in a U-shape, This will be described with reference to FIGS.

  First, sewing of the loop material 42 is started by the operator of the sewing machine 43 in a state where the loop material 42 cut into a predetermined length is held by the holding means 45 for holding the loop material 42 in the loop material supply device. When the pressing operation of the start switch (not shown) is performed, the sewing machine 43 lowers the sewing body main body pressing (not shown) and presses the sewing main body 50.

  Subsequently, as shown in FIG. 6A, the loop material supply device 41 moves the clamping means 45 so that the sewing portion of the loop material 42 to be sewn is positioned at the needle drop point in the sewing machine 43. Then, the sewing machine 43 presses the end portion 42a of the loop material 42 and the sewing product main body 50 with the presser 46 that presses the loop material 42 and the sewing product main body 50, and then presses the mounting table 47 on which the sewing product main body 50 is mounted. The first sewing portion at one end 42 a of the loop material 42 is sewn by moving in the width direction of the loop material 42 together with 46.

  Next, as shown in FIG. 6B, the loop material supply device 41 is folded in a U shape so that the clamping means 45 passes under the presser 46 and the loop material 42 covers the first sewing portion. While moving the clamping means 45 in one bent direction, the sewing machine 43 clamps the mounting table 47 so that the second sewing portion in the vicinity of the one end 42a of the loop member 42 is located at the needle drop point. Move in the other direction opposite to the moving direction. Thereafter, the sewing machine 43 presses the vicinity of the one end portion 42a of the loop member 42 and the sewn product main body 50 with the presser 46, and sews the second sewing portion.

  Further, the loop material supply device 41 includes a loosening means 49 for securing a loosening amount which is a gap between the loop material 42 and the sewing product body 50 at the bent portion of the belt loop, and an end portion 42a of the loop material 42 is Z-shaped. After moving to a position corresponding to the inside of the bent portion of the loop member 42 when bent into a shape, as shown in FIG. 6C, one end portion 42a of the loop member 42 with the loosening means 49 sandwiched therebetween. The clamping means 45 is moved in the other direction, which is the direction in which the Z is bent in a Z shape. At this time, the sewing machine 43 moves the mounting table 47 in the one direction so that the sewing portion of the other end portion 42b of the loop member 42 is located at the needle drop point. Subsequently, in the loop material supply device 41, a pair of shaft-shaped support portions 48a formed at the front end portion of the fork member 48 is disposed, and the other end portion 42b of the loop material 42 is disposed between the support portions 48a. As shown in FIG. 6D, the fork member 48 is rotated, and the other end portion 42b of the loop member 42 is bent into a U shape. Then, as shown in FIG. 6E, the sewing machine 43 presses the other end portion 42 b of the loop material 42 and the sewing product body 50 with the presser 46 and sews the third sewing portion. Accordingly, the sewing machine 43 provided with the loop material supply device 41 sews the loop material 42 to the sewn product main body 50 to form a belt loop having a predetermined shape.

JP 2000-000385 A

  However, according to the belt loop sewing machine 43 using the conventional loop material supply device 41 as described above, the one end portion 42a of the loop material 42 in FIG. 6B is clamped in a U-shaped direction. When the means 45 is moved in the one direction, the sewing machine 43 moves the mounting table 47 in the other direction so that the sewing portion of the loop material 42 is located at the needle drop point. At this time, for example, as shown in FIG. 7A, when the loop member 42 is folded back in a state where the clamping means 45 and the first sewing portion are upstream of the presser 46 in the one direction, The loop material 42 may bend between the clamping position by the clamping means 45 and the first sewing portion, and may be caught by the presser 46 or a sewing needle (not shown).

  When the loop material 42 that has been bent is caught by the presser 46 or the sewing needle in this way, the holding position of the loop material 42 by the holding means 45 is shifted, and further, as shown in FIG. In addition, the loop member 42 may be detached from the clamping means 45. If the clamping position of the loop material 42 by the clamping means 45 is shifted as described above, a belt loop having a desired shape cannot be formed, and the quality of the belt loop is deteriorated. If 42 is removed from the clamping by the clamping means 45, a belt loop cannot be formed.

  The present invention has been made in view of these points, and prevents the loop material from being displaced from the holding position of the loop material by the holding means and the loop material from being removed from the holding by the holding means. It is an object of the present invention to provide a belt loop sewing machine control device and a belt loop sewing machine control method capable of improving the quality of a belt loop by sewing at a place where the belt loop is to be sewn.

  In order to achieve the object, the belt loop sewing machine control device according to the first aspect of the present invention is characterized in that the belt loop sewing machine control device has a holding member for holding a loop material constituting the belt loop and a predetermined belt loop shape. A loop material supply device having a clamping means for sequentially conveying a plurality of sewing portions in the loop material clamped by the clamping member to a needle drop point, and each sewing portion in a sewn product body to which the loop material is sewn Controls cloth driving means that sequentially conveys to the dropping point, presser that sequentially presses each sewing portion when the loop material is sewn to the sewing product body, and driving of the clamping means, the cloth transfer means, and the presser. Control means, wherein the control means is for forming a belt loop having a shape in which one end of the loop material is bent in a U shape or a Z shape. After the one end that is the first sewing portion is sewn, the holding member that holds the loop material passes below the presser and covers the first sewing portion so as to cover the first sewing portion. In the control device for the belt loop sewing machine that performs the bending step, the control means moves the clamping member and the cloth conveying means in one direction, which is a direction passing under the presser, in the step. And a second step of moving the clamping member in the first direction and moving the cloth conveying means in the other direction opposite to the first direction.

  According to the first aspect of the present invention, in the first step, the clamping means and the cloth conveying means both move in one direction, which is a direction passing under the presser, so that the clamping position of the loop material by the clamping means And the first sewing portion can pass under the presser without being bent. Thereafter, in the second step, the clamping means is moved in the first direction, and the cloth conveying means is moved in another direction opposite to the first direction, so that the clamping position of the loop material by the clamping means and the first position Since it bends on the downstream side of the press between the sewing portion, it can be prevented from being caught by the bent portion of the loop material and the press or sewing needle.

  According to a second aspect of the present invention, there is provided a belt loop stitching machine control device characterized in that, in the belt loop stitching machine control device according to the first aspect of the present invention, the timing for switching from the first step to the second step is In the 1st process, it exists in the point after the time when the above-mentioned pinching member reaches below the above-mentioned presser.

  According to the second aspect of the present invention, in the control device for the belt loop stitching sewing machine according to the first aspect, the timing of moving from the first step to the second step is determined by the clamping means in the first step. By starting from the time when the lower part of the press is reached, it is possible to more reliably bend the gap between the holding position of the loop member by the holding means and the first sewing portion on the upstream side of the press in the one direction. Can be prevented.

  According to a third aspect of the present invention, there is provided a belt loop sewing machine control device comprising: a clamping member that clamps a loop material constituting a belt loop; and a plurality of loop members clamped by the clamping member so as to have a predetermined belt loop shape. A loop material supply device comprising a clamping means for sequentially conveying the sewing parts to the needle drop point, and a cloth conveying means for sequentially conveying each sewing part in the sewn product body to which the loop material is sewn to the needle drop point, By means of a belt loop sewing machine comprising a presser for sequentially pressing the sewing parts when the loop material is sewn to the sewn product main body, and a control means for controlling the holding means, the cloth conveying means and the presser drive. , When one end of the loop material forms a belt loop that is bent in a U-shape or a Z-shape, and the first sewing portion Belt loop stitching that performs a step of folding the loop material so that the clamping member that sandwiches the loop material passes below the presser and covers the first sewing portion after the one end is sewn In the control method of the sewing machine, in the step, a first step of moving the clamping member and the cloth conveying means in one direction that is a direction passing under the presser, and moving the clamping member in the first direction And performing the second step of moving the cloth conveying means in the other direction opposite to the first direction.

  According to the third aspect of the present invention, in the first step, the clamping means and the cloth conveying means both move in one direction, which is a direction passing under the presser, so that the clamping position of the loop material by the clamping means And the first sewing portion can pass under the presser without being bent. Thereafter, in the second step, the clamping means is moved in the first direction, and the cloth conveying means is moved in another direction opposite to the first direction, so that the clamping position of the loop material by the clamping means and the first position Since the space between the sewing portion is bent on the downstream side of the presser, it is possible to prevent the loop material from being caught by the bent portion and the presser or the sewing needle.

  According to a fourth aspect of the present invention, there is provided a belt loop stitching machine control method characterized in that, in the belt loop stitching sewing machine control method according to the third aspect, the timing of switching from the first step to the second step is In the 1st process, it exists in the point after the time when the above-mentioned pinching member reaches below the above-mentioned presser.

  According to the fourth aspect of the present invention, in the method for controlling the belt loop sewing machine according to the third aspect, the timing at which the first step moves to the second step is determined by the clamping means in the first step. By starting from the time when the lower part of the press is reached, it is possible to more reliably bend the gap between the holding position of the loop member by the holding means and the first sewing portion on the upstream side of the press in the one direction. Can be prevented.

  The feature of the method for controlling the belt loop sewing machine according to the invention of claim 5 is that the belt member constituting the belt loop is sandwiched by a clamping member, and the clamping member is clamped by the clamping member so as to have a predetermined belt loop shape. Loop material supply device provided with clamping means for sequentially conveying a plurality of sewing parts in the loop material to the needle drop point, and a cloth for sequentially conveying each sewing part in the sewn product body to which the loop material is sewn to the needle drop point A belt loop having conveying means, a pressing member that sequentially presses the sewing parts when the loop material is sewn to the sewing product body, and a control unit that controls driving of the clamping unit, the cloth conveying unit, and the pressing member. A belt loop sewing machine that forms a belt loop in which one end of the loop material is bent into a U shape or a Z shape by a sewing machine. In the control method, after the one end as the first sewing portion is sewed, the holding means holding the loop material is passed under the presser so as to cover the first sewing portion. In the step of bending the loop material, a first step of moving the clamping means and the cloth conveying means in one direction which is a direction passing below the presser, and the cloth conveying means opposite to the first direction And the second step of moving in the other direction.

  According to the fifth aspect of the present invention, in the first step, the clamping means and the cloth conveying means both move in one direction, which is a direction passing under the presser, so that the loop material is clamped by the clamping means. The lower part of the presser can be passed between the position and the first sewing portion without bending. Thereafter, in the second step, the clamping means is moved in the first direction, and the cloth conveying means is moved in another direction opposite to the first direction, so that the clamping position of the loop material by the clamping means and the first position Since it bends on the downstream side of the press between the sewing portion, it can be prevented from being caught by the bent portion of the loop material and the press or sewing needle.

  As described above, according to the belt loop sewing machine according to the present invention, the gap between the holding position of the loop member by the holding means and the first sewing portion bends more upstream than the press in the one direction. Therefore, the loop material can be prevented from being caught by the presser or the sewing needle. Accordingly, the belt loop sewing machine can surely prevent the loop material from being displaced by the holding means and the loop material from being removed from the holding by the holding means 3. It is possible to sew at an intended position, and it is possible to improve the quality of the belt loop.

  Hereinafter, an embodiment of a loop material supply device according to the present invention will be described with reference to FIGS. 1 to 5.

  FIG. 1 is a perspective view showing a belt loop stitching sewing machine according to the present embodiment, and FIG. 2 is a block diagram showing a configuration of the belt loop stitching sewing machine of FIG.

  As shown in FIGS. 1 and 2, a belt loop sewing machine 2 according to this embodiment includes a loop material supply device 1 that supplies a loop material 20 constituting a belt loop to the sewing machine 2, and the loop material supply device. 1 has a clamping means 3 for clamping the loop member 20. The sandwiching means 3 has a pair of sandwiching members 5 and 6 that sandwich the loop member 20, and the sandwiching members 5 and 6 are moved in a direction of contacting and separating from each other by driving of the cylinder 9. .

  And the control means 17 provided with CPU37 which controls the drive of each part of the loop material supply apparatus 1 and the sewing machine 2 makes the loop material 20 by the clamping means 3 by approaching both the clamping members 5 and 6 by driving the cylinder 9. And the holding members 5 and 6 are separated from each other to release the holding of the loop material 20 by the holding means 3.

  A fork member 25 is provided on the side of the sandwiching means 3 in parallel with the sandwiching means 3, and the tip of the fork member 25 includes a pair of support portions 25 a formed in a bifurcated shape. When bending the loop member 20, the loop member 20 is arranged between the support portions 25a.

  The fork member 25 is connected to a rotary actuator 26 as rotation driving means for rotating the fork member 25, and the control means 17 rotates the fork member 25 by driving the rotary actuator 26. Furthermore, the fork member 25 is used for reciprocating the fork member 25 independently of the holding means 3 in the same X direction as the width direction perpendicular to the longitudinal direction of the loop member 20 held by the holding means 3. The cylinder 28 is connected, and the control means 17 reciprocates the fork member 25 in the X direction by driving the cylinder 28.

  The clamping means 3 and the fork member 25 are integrally supported by a support base (not shown) disposed on the rear side of the clamping means 3 and the fork member 25 opposite to the opposite side of the sewing machine 2. 25 is supported by the support base so as to be movable in the vertical direction.

  The loop material supply apparatus 1 includes an X-direction moving unit 11 including an X-direction drive motor 11 a that moves the clamping unit 3 in the X direction, and a fork member 25 having a longitudinal length of the loop material 20 that is clamped by the clamping unit 3. Y-direction moving means 12 provided with a Y-direction drive motor 12a that moves the clamping means 3 in the same Y direction as the direction, and Z-direction movement means 13 provided with a Z-direction drive cylinder 13a that moves the clamping means 3 in the vertical direction. And have. The X direction moving means 11 and the Z direction moving means 13 are connected to a support base that integrally supports the clamping means 3 and the fork member 25, and the Y direction moving means 12 is connected to the support base via the X direction moving means 11. Has been. And the control means 17 drives the X direction drive motor 11a, the Y direction drive motor 12a, and the Z direction drive cylinder 13a so that the clamping means unit 10 composed of the clamping means 3 and the fork member 25 is moved integrally. It has become. The loop material supply device 1 supplies the loop material 20 to the needle drop point in the sewing machine 2 by driving the X-direction drive motor 11a, the Y-direction drive motor 12a, and the Z-direction drive cylinder 13a by the control means 17. The clamping means 3 is moved so that the non-sewn portion of the material 20 is retracted from the needle drop point.

  The loop material supply device 1 is a rod-shaped loop loosening whose cross-sectional shape is used to ensure the looseness of the belt loop sewn on the sewn product main body 21 (the gap between the loop material 20 and the sewn product main body 21). The loop material supply device 1 includes the loop material 20 while the loop loosening means 22 is disposed inside the bent portion of the loop material 20 when the loop material 20 is sewn to the sewn product main body 21. It comes to bend. The loop loosening means 22 is connected to the cylinder 22a, and the control means 17 reciprocates the loop loosening means 22 in the X direction by driving the cylinder 22a. The loop loosening means 22 is connected to the pulse motor 22b, and the control means 17 drives the pulse motor 22b to rotate the loop loosening means 22 so that the amount of belt loop loosening by the loop loosening means 22 is reduced. It comes to adjust.

  The loop material supply device 1 includes a feeding means 16 that feeds the loop material 20 from a supply source of the loop material 20, and the feeding means 16 is connected to a pulse motor 16a. The control means 17 feeds out the loop material 20 having a desired length from the supply source by rotationally driving the pulse motor 16a by a predetermined amount.

  The loop material supply device 1 includes a cutting means 19 having a pair of knifes (not shown) for cutting the loop material 20 fed by the feeding means 16 into a predetermined length, and the cutting means 19 is connected to a cylinder 19a. Has been. The control means 17 drives the cylinder 19a and moves one knife toward and away from the other knife, thereby cutting the loop material 20 fed from the supply source into a desired length. Yes.

  Further, the sewing machine 2 provided with the loop material supply device 1 includes a touch panel 36 as input means for inputting operation settings of each part of the loop material supply device 1, and a display panel 39 for displaying the settings. Operation means 35 is provided. 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.

  Further, the sewing machine 2 includes a placing table 31 as a cloth conveying means on which the sewing product main body 21 is placed, and the placing table 31 is connected to a pulse motor 31a. The control means 17 drives the pulse motor 31a to move the mounting table 31 in the X direction and the Y direction, so that the sewn product main body 21 and the loop material 20 mounted on the mounting table 31 are moved in the X direction and the Y direction. It is designed to be transported.

  The sewing machine 2 includes a presser 23 that presses the sewn product main body 21 and the loop material 20 placed on the placement table 31, and the presser 23 is connected to a cylinder 23a. The control means 17 drives the cylinder 23a and lowers the presser 23, whereby the loop material conveyed to a predetermined position in the sewn product main body 21 by the sewn product main body 21 and the clamping means 3 placed on the placing table 31. 20 is to be pressed. Further, the control means 17 drives the cylinder 23 a to raise the presser 23, thereby releasing the presser of the sewn product main body 21 and the loop material 20 by the presser 23.

  The sewing machine 2 includes a cloth presser 27 that presses the sewn product main body 21 placed on the placing table 31. The cloth presser 27 is connected to a cylinder 27a. The control means 17 drives the cylinder 27 a and lowers the cloth presser 27 to press the sewn product main body 21 placed on the placement table 31. Further, the control means 17 drives the cylinder 27 a to raise the cloth presser 27, thereby releasing the presser of the sewn product main body 21 by the cloth presser 27.

  Further, the sewing machine 2 is provided with a start switch 29 for inputting start instruction information for sewing start to the control means 17, and the control means 17 is based on the input start instruction information, and the loop material supply device 1 and the sewing machine 2 are provided. Control for starting the operation of sewing the loop material 20 to the sewn product main body 21 is performed by each of these parts.

  In addition to the CPU 37, the control unit 17 includes a ROM 18A, a RAM 18B, and the like as storage units. The CPU 37 is connected to each part of the loop material supply device 1 and the sewing machine 2 via the I / O interface 38, and data Is input and output.

  In order to sew a plurality of sewing portions of the loop material 20 to the sewing product body 21 sequentially by the sewing machine 2, the control means 17 holds the loop material 20 by the holding means 3 so that a predetermined belt loop shape is obtained. Each sewing portion in the loop material 20 is sequentially conveyed to the needle drop point of the sewing machine 2.

  The control means 17 holds the loop material 20 after the end of the sewing of the first sewing portion when the one end portion 20a of the loop material 20 is bent into a U shape or a Z shape. In the step of bending the loop member 20 so that the holding means 3 passes below the presser 23 and covers the first sewing portion, as a first step, the holding means 3 and the placing table 31 as the cloth conveying means are provided. It is moved at the same speed in one direction which is a direction passing under the presser 23.

  Furthermore, the control means 17 moves the clamping means 3 in the first direction at the timing when the clamping members 5 and 6 reach below the presser 23 in the first step described above, and moves the mounting table 31 in the first direction. Switch to the second step of moving in the opposite opposite direction. Here, “the sandwiching members 5 and 6 have reached below the presser 23” means that the downstream end of the sandwiching members 5 and 6 in one direction has reached below the upstream end of the presser 23 in one direction. Point to. At this time, the first sewing portion has moved from below the presser 23 to the downstream side.

  In addition, the belt loop sewing machine 2 can set an arbitrary timing for switching from the first step to the second step (timing to start moving the mounting table 31 in the other direction) by an operator of the belt loop sewing machine 2. In this embodiment, the touch panel 36 functions as an input unit that can set the timing of starting movement of the mounting table 31 in the other direction to an arbitrary timing. It is like that. Thereby, the belt loop sewing machine 2 can change the timing of switching from the first step to the second step in accordance with the ease of bending due to the difference in the material of the loop material 20.

  Subsequently, while conveying the loop material 20 by the loop material supply device 1, the sewing machine 2 is configured such that one end 20a of the loop material 20 is bent in a Z shape and the other end 20b is bent in a U shape. The process of sewing the loop material 20 on the sewn product main body 21 will be described with reference to FIGS. 3 (a) and 3 (b), FIGS. 4 and 5 (a) to 5 (h).

  As shown in FIG. 3 (a), the loop material supply device 1 is fed from the supply source by the feeding means 16 and is cut by the cutting means 19 before the loop material 20 is sewn to the sewn product main body 21. It waits in the state which clamped the loop material 20 cut | disconnected by the predetermined length dimension by the clamping means.

  First, as shown in FIG. 4, the control means 17 determines whether or not the operating means 35 has been operated (ST1). If it is determined that the operating means 35 has been operated (Yes in ST1), the parameter is set. Set (ST2). Subsequently, after setting the parameters (ST2) or when it is determined that the operation means 35 is not operated (No in ST1), it is determined whether or not the start switch 29 has been pressed (ST3). When determining that the start switch 29 has not been pressed (NO in ST3), the controller 17 determines again whether or not the operating unit 35 has been operated (ST1). On the other hand, when it is determined that the start switch 29 has been pressed (YES in ST3), the control unit 17 lowers the cloth presser 27 to press the sewing product body 21 (ST4).

  Subsequently, as shown in FIG. 3 (b), the control means 17 drives the X-direction drive motor 11 a to move the clamping means 3 so that the sewing portion of the loop material 20 is positioned at the needle drop point of the sewing machine 2. (ST5).

  Further, as shown in FIG. 5A, the control means 17 lowers the presser 23 to press the sewing parts of the sewn product main body 21 and the loop material 20, and then drives the Y-direction drive motor 12a. The clamping means 3 is moved in a direction away from the needle drop point (ST6). The control means 17 moves the mounting table 31 together with the cloth presser 27 and the presser 23 in the width direction of the loop member 20 and moves the sewing needle 33 mounted on the lower end portion of the needle bar 32 up and down to move the loop. The first sewing portion at one end of the material 20 is sewn to the sewn product main body 21 (ST7).

  Subsequently, as shown in FIG. 5 (b), the control means 17 raises the presser 23 (ST 8), and then, as shown in FIG. 5 (c), first, the mounting table 31 is moved at the same speed as the clamping means 3. To move in the one direction (first step) (ST9). Then, as shown in FIG. 5 (d), when the clamping means 3 reaches below the presser 23, the control means 17 has a needle drop point near the one end 20a that is the second sewing portion of the loop material 20. The movement of the mounting table 31 in the other direction is started so as to be positioned at (second step) (ST10). At this time, the loop member 20 between the holding position of the holding member 3 in the loop member 20 and the first sewing portion is not bent and is released from the side of the presser 23 in the one direction. While the mounting table 31 is moving in the other direction, the clamping means 3 continues to move in the one direction. Thereby, as shown in FIG.5 (e), between the clamping position by the clamping means 3 in the loop material 20, and the 1st sewing part bend in the downstream rather than the press 23 in the said one direction, As shown in FIG. 5 (f), the loop member 20 is bent in a U shape so as to cover the first sewing portion.

  Then, the control means 17 lowers the presser 23 and presses the sewn product main body 21 and the loop material 20, and then moves the placing table 31 together with the cloth presser 27 and the presser 23 in the width direction of the loop material 30, and the sewing needle. By moving 33 up and down, the second sewing portion in the vicinity of one end of the loop member 20 is sewn to the sewn product main body 21 (ST11).

  Thereafter, the control means 17 moves the loosening means 22 to a position corresponding to the inside of the bent portion of the loop material 20 when one end of the loop material 20 is bent in a Z shape (ST12). Further, as shown in FIG. 5 (g), the control means 17 moves the clamping means 3 in a direction in which the one end portion 20a of the loop member 20 is bent in a Z shape with the loosening means 22 being sandwiched, The mounting table 31 is moved so that the sewing portion at the other end of the loop member 20 is located at the needle drop point (ST13). Subsequently, the control means 17 moves both support portions 25a so that the other end portion of the loop member 20 is positioned between both support portions 25a of the fork member 25. As shown in FIG. The loop member 20 is disposed so as to be sandwiched between the support portions 25a, and the fork member 25 is rotated in a predetermined direction, whereby the other end portion of the loop member 20 is bent into a U shape (ST14).

  Further, the control means 17 lowers the presser 23 and presses the other end of the loop member 20 with the presser 23, and moves the clamping means 3 in a direction away from the sewing machine 2 by driving the X-direction drive motor 11a. Then, the loosening means is moved away from the sewing machine 2 (ST15). The control means 17 moves the placing table 31 together with the cloth presser 27 and the presser 23 in the width direction of the loop material 30 and moves the sewing needle 33 up and down to move the third place at the other end of the loop material 20. The sewing portion is sewn to the sewn product main body 21 (ST16). Then, the control means 17 raises the cloth presser 27 and the presser 23 (ST17), and complete | finishes the process of sewing the loop material 20 to the sewn product main body 21. FIG. Thereby, the sewing machine 2 provided with the loop material supply device 1 forms a belt loop in which one end portion 20a is Z-shaped and the other end portion 20b is U-shaped.

  Subsequently, while conveying the loop material 20 by the loop material supply device 1, the sewing machine 2 is configured such that one end 20a of the loop material 20 is bent in a Z shape and the other end 20b is bent in a U shape. The second embodiment of the process of sewing the loop material 20 to the sewn product main body 21 will be described. Detailed description of the same steps as those in the first embodiment will be omitted.

  In the second embodiment, the timing of switching from the first step to the second step is after the time when the clamping member reaches below the presser in the first step, and the clamping member 5 in the first step, 6 moves to the position to be moved in the one direction, and the clamping members 5 and 6 do not move in the second step, and only the mounting table 31 moves in the other direction.

  Thereby, since the gap between the clamping position by the clamping members 5 and 6 in the loop member 20 and the first sewing portion is removed from the upstream side of the presser 23 in one direction at the end of the first process, the second process In this case, even if the mounting table 31 moves in the other direction and the space between the holding position of the loop member 20 by the holding members 5 and 6 and the first sewing portion bends, it will not be caught by the presser 23 or the sewing needle.

  Thus, according to the present embodiment, in the first step, the clamping means 3 and the mounting table 31 both move in one direction, which is a direction passing under the presser 23, and therefore the clamping means 3 in the loop material 20 It is possible to pass under the presser 23 without bending between the clamping position and the first sewing portion. Thereafter, in the second step, the clamping means 3 is moved in the first direction, and the mounting table 31 is moved in the other direction opposite to the first direction, so that the first position and the first clamping position of the loop member 20 by the clamping means 3 are changed. Since the loop material 20 between the sewing material and the sewing material is bent at the downstream side of the presser 23, the bent portion of the loop material 20 can be prevented from being caught by the presser 23 and the sewing needle 33.

  Therefore, the belt loop sewing machine 2 according to the present embodiment can prevent the loop material 20 from being caught by the presser 23 and the sewing needle 33. As a result, the belt loop sewing machine 1 can reliably prevent displacement of the holding position of the loop material 20 by the holding means 3 and removal of the loop material 20 from being held by the holding means 3. Can be sewn cleanly at the intended position in the sewn product main body 21, and the quality of the belt loop can be improved.

  In the present embodiment, the timing at which the touch panel 36 switches from the first process to the second process is set when the clamping means 3 reaches below the presser 23. Thereby, it is possible to reliably prevent the loop material 20 from being bent on the upstream side from the presser 23 in the one direction between the holding position by the holding means 3 and the first sewing portion.

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

  For example, in the present embodiment, the timing for starting the movement of the mounting table 31 in the other direction is set after the holding means 3 reaches the lower side of the presser 23, but is not limited thereto. The loop material 42 may be folded back at a position where the portion between the clamping position by the clamping means 3 and the first sewing portion in the loop material 20 is not pinched by the clamping means 3 and the presser 23.

  Moreover, in this embodiment, although the case where the belt loop of the shape by which the one end part of the loop material 20 was bent in Z shape and the other end part was bent in U shape was demonstrated, it is limited to this However, it can be used to form a belt loop of another shape whose one end is bent in a Z-shape.

The perspective view which shows one Embodiment of the sewing machine provided with the loop material supply apparatus which concerns on this invention The block diagram which shows the structure of the loop material supply apparatus and sewing machine of FIG. (A) (b) is a schematic plan view which shows the principal part of a sewing machine provided with the loop material supply apparatus of FIG. The flowchart which shows the formation process of a belt loop in the case of sewing a loop material on a sewing-body main body with the sewing machine provided with the loop material supply apparatus of FIG. (A)-(h) is a schematic side view which shows each process of the belt loop formation of FIG. (A)-(e) is a schematic side view which shows an example of each process of the belt loop formation by the sewing machine provided with the conventional loop material supply apparatus. (A) is a schematic side view showing a case where the loop material is caught by the presser in the step of forming the belt loop of FIG. 6 (b), and (b) is a result of FIG. Schematic side view showing a case where it is removed from the clamping by the clamping means

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loop material supply apparatus 2 Sewing machine 3 Clamping means 9 Cylinder 10 Clamping means unit 11 X direction moving means 11a X direction driving motor 12 Y direction moving means 12a Y direction driving motor 13 Z direction moving means 13a Z direction driving cylinder 16 Feeding means 16a Pulse motor 17 Control means 18A ROM
18B RAM
DESCRIPTION OF SYMBOLS 19 Cutting means 19a Cylinder 20 Loop material 20a One end part 20b Other end part 21 Sewing thing main body 22 Loosening means 22a Cylinder 22b Pulse motor 23 Press 23a Cylinder 25 Fork member 25a Support part 26 Rotary actuator 27 Cloth presser 27a Cylinder 28 Cylinder 29 Start switch 31 mounting table 31a pulse motor 35 operation means 36 touch panel 37 CPU
38 I / O interface 39 Display panel

Claims (5)

A clamping member for clamping the loop material constituting the belt loop;
A loop material supply device comprising clamping means for sequentially conveying a plurality of sewing portions in the loop material clamped by the clamping member so as to have a predetermined belt loop shape to a needle drop point;
Cloth transport means for sequentially transporting each sewing portion in the sewn product body to which the loop material is sewn to the needle drop point;
A presser for sequentially pressing the sewing parts when the loop material is sewn to the sewn product body;
Control means for controlling the driving of the clamping means, the cloth conveying means and the presser,
The control means is a case where one end portion of the loop material forms a belt loop having a shape bent in a U shape or a Z shape, and the one end portion which is a first sewing portion is sewn. In a control device for a belt loop sewing machine that performs a step of bending the loop material so that the clamping member that sandwiches the loop material passes below the presser and covers the first sewing portion.
In the step, the control means moves the clamping member and the cloth conveying means in one direction that is a direction passing below the presser, and moves the clamping member in the first direction. And a second step of moving the cloth conveying means in the other direction opposite to the first direction.   2. The belt loop stitching sewing machine according to claim 1, wherein the timing of switching from the first step to the second step is after the time when the holding member reaches below the presser in the first step. Control device. A clamping member that clamps a loop material constituting the belt loop, and a clamping means that sequentially conveys a plurality of sewing portions in the loop material clamped by the clamping member so as to have a predetermined belt loop shape to a needle drop point. A loop material supplying device; cloth conveying means for sequentially conveying each sewing portion of the sewn body to which the loop material is sewn to the needle drop point; and each sewing when the loop material is sewn to the sewn body. One end of the loop material is formed into a U-shape or a Z-shape by a belt-loop-sewing machine having a presser for sequentially pressing the portions and a control unit for controlling the holding means, the cloth conveying means, and the presser drive. In the case of forming a bent belt loop, the loop material is clamped after the one end which is the first sewing portion is sewn. It passes Kikyoji member downward of the pressing, in the control method of the belt loop sewing machine to perform the step of folding the loop material so as to cover the first sewing portion,
In the step, the first step of moving the clamping member and the cloth conveying means in one direction, which is a direction passing under the presser, and moving the clamping member in the first direction, and the cloth conveyance And a second step of moving the means in the other direction opposite to the first direction.   4. The belt loop sewing machine according to claim 3, wherein the timing of switching from the first step to the second step is after the time when the clamping member reaches below the presser in the first step. 5. Control method. A clamping member that clamps a loop material constituting the belt loop, and a clamping means that sequentially conveys a plurality of sewing portions in the loop material clamped by the clamping member so as to have a predetermined belt loop shape to a needle drop point. A loop material supplying device; cloth conveying means for sequentially conveying each sewing portion of the sewn body to which the loop material is sewn to the needle drop point; and each sewing when the loop material is sewn to the sewn body. One end of the loop material is folded into a U shape or a Z shape by a belt loop sewing machine having a presser for sequentially pressing the portions and a control unit for controlling the holding means, the cloth conveying means and the presser drive. In a method for controlling a belt loop sewing machine that forms a belt loop having a bent shape,
After the one end portion which is the first sewing portion is sewn, the holding means holding the loop material is passed under the presser, and the loop material is bent so as to cover the first sewing portion. In the step, a first step of moving the clamping means and the cloth conveying means in one direction which is a direction passing under the presser, and a first step of moving the cloth conveying means in the other direction opposite to the first direction. A method for controlling a belt loop sewing machine, comprising performing two steps.