JP5410719B2 - Belt loop sewing machine control method and belt loop sewing machine - Google Patents

Description

  The present invention comprises a belt loop supply device for supplying and arranging a loop material of a belt loop so as to be sewable, and a control method of a single-loop belt loop sewing machine for sewing the loop material to a sewn product main body by tacking sewing. It relates to the belt loop sewing machine.

  2. Description of the Related Art Conventionally, a belt loop sewing machine has been used in which a long belt loop loop material is sewed on a sewn product body such as a waistband of a trouser to form a belt loop that is a portion through which the belt passes (Patent Document 1). reference).

  As shown in FIG. 11, the belt loop stitching sewing machine supplies and arranges the sewing machine body 1 for sewing the belt loop material T to the sewing product body M and the belt loop material T to the sewing position. The belt loop supply device 2 is connected to each other so that various control signals can be transmitted and received.

  As the sewing machine body 1, a single-needle barbed sewing machine has been conventionally used. This machine is driven by a sewing machine control device (not shown) to drive a sewing machine motor, a cloth feed motor, a presser, etc. It is configured to perform tacking stitches.

  Further, as shown in FIG. 12, the belt loop supply device 2 includes a belt loop feeding unit 201 that feeds out a loop material T of a belt loop having a required length, and a belt loop cutting unit 202 that cuts the loop material T of the fed belt loop. Sewing the holding means 203 for holding the loop material T of the belt loop cut to a predetermined length, the belt loop supply means 204 for moving the holding means 203 for holding the loop material T of the belt loop back and forth to the sewing position, and the holding means 203 Belt loop forming means 205 that moves along the conveying direction of the article body, cloth conveying means 206 that moves the sewing article main body M that sews the belt loop, body presser 207 that holds the sewing article main body M that sews the belt loop, and belt loop In addition to the start switch 208 for starting the sewing operation, the holding means 203 is integrated. A fork 209 which is disposed and bends the loop material T of the belt loop of a predetermined length, a loop loosening means 210 for ensuring the amount of belt loop loosening, and a belt loop thickness measurement for measuring the thickness of the loop material T of the belt loop. Means 211 and the like are provided, and each of these means is configured to be controlled by the control means 212 of the belt loop supply device 2. In the conventional belt loop supply device 2, only the belt loop feeding means 201 is driven by the pulse motor PM101, and the actuators of the other means are all driven by the cylinders C101 to C109.

  An operation panel 3 having a touch panel type input means and a display means such as a liquid crystal display is connected to the belt loop supply device 2 to display a sewing pattern of the belt loop sewing machine, a shape of a belt loop to be attached, and the like. Various parameters can be set while checking the information.

  FIG. 13 shows a sewing machine body 1 composed of the above-described single-needle barb sewing machine, and as shown in FIG. 14, a first barb S1 is sewn near one end of the loop material T of the belt loop. In a state where the loop material T is bent so as to cover the first barb S1, a second barb S2 is sewn in the vicinity of the first barb S1, and the loop is further covered so as to cover the second barb. The material T is bent. Then, the other end portion of the loop material T is bent toward the sewn product main body M, and the third bar clamp S3 is sewn to the portion where the loop material T is double-folded to perform the belt loop sewing operation. It is a flowchart which shows.

  As shown in FIG. 15A, the holding means 203 holds the belt loop loop material T drawn by the belt loop feeding means 201 and cut to a predetermined length by the belt loop cutting means 202 with the holding means 203. In this state, it is assumed that the machine is waiting at a position away from the sewing position.

  Then, in order to sew a belt loop having specifications for forming the three bar-tacking stitches S 1, S 2, S 3 as shown in FIG. 14, the operator sets the sewn product main body M on the sewing machine table 4 of the sewing machine main body 1. In this state, the start switch 208 is pressed.

  When the start switch 208 is pressed, the control device 212 starts a belt loop sewing operation. First, the cylinder C106 is driven to lower the body presser 207 to the upper surface of the sewing product body M, and the sewing product body. Press M (ST101).

  Subsequently, the control device 212 drives the cylinder C103 to drive the belt loop supply means 204, and advances the clamping means 203 to the sewing position while holding the belt loop loop material T (ST102). That is, in plan view, the clamping means 203 is advanced from the state of FIG. 15A to the sewing position as shown in FIG. FIG. 16 is a side view of the state shown in FIG. 15B (illustration of the fork is omitted).

  Next, when the presser 5 of the sewing machine body 1 is lowered and the loop material T of the belt loop is pressed, the control device 212 drives the cylinder C104 to move the belt loop forming means 205, as shown in FIG. The clamping means 203 is moved to the front side (left side in the figure) which is the operator side with respect to the sewing machine body 1 (ST103).

  In this state, the first bar clamp S1 is sewn in the vicinity of one end of the loop material T of the belt loop, and after the sewing is completed, the presser 5 is raised as shown in FIG. 18 (ST104).

  Subsequently, the control means 212 drives the cylinder C105 to move the sewn product main body M to the near side by the cloth conveying means 206, and simultaneously drives the cylinder C104 to move the belt loop forming means 205 to move the clamping means 203. Is moved to the back side (the right side in the figure) on the side opposite to the operator with respect to the sewing machine body 1, and as shown in FIG. 19, the loop material T is bent so as to cover the upper side of the first bar clamp S1 (ST105). ).

  Then, as shown in FIG. 20, after the presser 5 of the sewing machine main body 1 is lowered and the loop material T and the sewn product main body M are pressed, the vicinity of the first bar clamp S1 and the back side of the first bar clamp S1. Then, the second tacking stopper S2 is sewn (ST106).

  Subsequently, as shown in FIG. 21, the control means 212 drives the cylinder C108 to move the bar constituting the loop loosening means 210 to the loop loosening position on the loop material T (ST107).

  Then, as shown in FIG. 22, the control means 212 drives the cylinder C <b> 105 and moves the sewn product main body M to the back side by the cloth conveying means 206. At this time, since the loop loosening means 210 is mounted on the cloth conveying means 206, it moves by the same distance as the cloth conveying means 206. At the same time, the control means 212 drives the cylinder C104 to move the belt loop forming means 205, moves the clamping means 203 to the near side, and covers the bar of the loop loosening means 210 so as to cover the upper side of the second bar clamp S1. The loop material T is bent so as to give up (ST108).

  Then, the fork 209 which is a belt loop bending means is advanced, and the fork 209 is rotated from the state where the loop material T is sandwiched between the other portions of the fork 209 as shown in FIG. The end is bent and held (ST109). By this bending operation, the end of the loop material T held by the holding means 203 is detached from the holding means 203.

  Then, as shown in FIG. 24, the presser 5 of the sewing machine main body 1 is lowered again to the upper surface of the sewn product main body M to press the loop material T and the sewn product main body M, and the belt loop supply means 204 and the loop loosening means 210 bar. Is retracted (ST110), and as shown in FIG. 25, the third barb S3 is sewn to the end portion where the loop material T is folded (ST111).

  Then, the presser 5 and the body presser 207 are raised, and the sewing of the belt loop is finished (ST112).

JP-A-10-113484

  By the way, when the other end portion of the loop material T of the belt loop is bent as in the above-described step ST109, the loop material T tends to fall out from the fork until the fork 209 starts rotating and then rotates by a predetermined angle. The clamping means 203 needs to clamp the loop material T until it is sandwiched and held by 209. Therefore, the other end of the loop material T needs to have a length extending from the fork 209 to the clamping means 203. The length of the other end of the loop material T after the fork 209 rotates and the loop material T is folded back is the length of the loop material T. The length from the other end of the loop material T to the fork 209 is longer than necessary to maintain the bent state, and is an excess (FIG. 23). And since this surplus part remains in the state which extended as a surplus part to the front end side of the 3rd tack S3 in the belt loop sewn, as shown in FIG. 14, the belt loop was sewed. The appearance and usability of the external appearance may be impaired.

  The surplus portion of the loop material T depends on the gap size between the clamping means 203 and the fork 209, but the fork 209 is formed integrally with the clamping means 203 as shown in FIG. Since the gap between the clamping means 203 and the fork 209 configured to move together with the clamping means 203 by a certain belt loop forming means 205 is a fixed size, the belt loop supply device 2 having the conventional configuration has an excess portion of the loop material T. It was difficult to eliminate or reduce as much as possible.

  Therefore, in view of such a point, the present invention folds the other end portion of the loop material with one end side sewn to the sewing product body with a fork by a single-needle tacking sewing machine, and the folded loop. In a belt loop stitching machine that sews the belt loop by sewing the material to the sewing product body, the length of the folded portion of the other end of the loop material may be shortened as much as possible to improve the finish of the belt loop. It is an object of the present invention to provide a belt loop stitching sewing machine control method and a belt loop stitching sewing machine that can be used.

In order to achieve the above object, a method for controlling a belt loop sewing machine according to a first aspect of the present invention includes a cloth conveying means for conveying a sewing product body, a clamping means for clamping a loop material constituting a belt loop, Folding means including a fork that bends the end of the loop material by sandwiching and rotating the loop material, moving means for moving the clamping means and the fork in the longitudinal direction of the loop material, and the loop material to itself imparting slack in the belt loop by winding a loop loosening means movable in longitudinal direction of the loop material, the belt loop supply apparatus having a control means for controlling driving of the respective units used, the loop material After the one end of the loop material is sewn to the sewn product main body, the loop material is wound around the loop loosening means, and the other end of the loop material is folded by the fork. It is a control method in a belt loop sewing machine that bends and sews the vicinity of the other end to the sewn product main body, wherein the vicinity of the other end of the loop material is sandwiched between the forks, and the fork is rotated to bend the loop material. Thereafter, before the vicinity of the other end is sewn to the sewn product main body, the loop loosening means in a state where the loop material is wound is moved away from the bending position of the fork in the longitudinal direction of the loop material. The surplus part of the other end of the loop member is moved to be drawn between the fork and the loop loosening means .

  The belt loop sewing machine control method according to the second aspect includes a cloth conveying means for conveying a sewing product body, a clamping means for clamping the loop material constituting the belt loop, and the loop material being sandwiched and rotated. Bending means comprising a fork for bending the end of the loop material, moving means for moving the clamping means and the fork in the longitudinal direction of the loop material, and winding the loop material around itself to the belt loop. A belt loop supply device having loop loosening means movable in the longitudinal direction of the loop material for imparting looseness, and a control means for controlling driving of the respective means, and one end of the loop material is sewn to the sewing product body After the attachment, the loop material is wound around the loop loosening means, the other end of the loop material is bent, and the vicinity of the other end is sewn to the sewing product body. A method for controlling a belt loop sewing machine, wherein the vicinity of the other end of the loop material is sandwiched between the forks and rotated to bend the loop material before sewing the vicinity of the other end to the sewing product body. The cloth conveying means is moved in a direction in which one end of the loop material is separated from the fork.

  And the control method of the belt loop sewing machine of the third aspect comprises a cloth conveying means for conveying the sewing body, a clamping means for clamping the loop material constituting the belt loop, and the loop material being sandwiched and rotated. Bending means comprising a fork for bending the end of the loop material, moving means for moving the clamping means and the fork in the longitudinal direction of the loop material, and winding the loop material around itself to the belt loop. A belt loop supply device having loop loosening means movable in the longitudinal direction of the loop material for imparting looseness, and a control means for controlling driving of the respective means, and one end of the loop material is sewn to the sewing product body After the attachment, the loop material is wound around the loop loosening means, the other end of the loop material is bent, and the vicinity of the other end is sewn to the sewing product body. A belt loop stitching sewing machine control method, in which the vicinity of the other end of the loop material is sandwiched between the forks and rotated to bend the loop material before sewing the vicinity of the other end to the sewing product main body. The fork in a state in which the loop material is sandwiched is moved in a direction away from one end of the loop material sewn on the sewing product body.

  Furthermore, the belt loop sewing machine of the present invention is characterized by having a control means for executing the control method according to any one of claims 1 to 3.

According to the control method of the belt loop sewing machine of the first aspect of the present invention, the vicinity of the other end of the loop material is sandwiched by the fork, the fork is rotated to bend the loop material, and then the vicinity of the other end. Before the sewing material body is sewed, the loop loosening means in a state where the loop material is wound is moved in a direction away from the bending position of the fork so that the length from the fork to the other end of the loop material is increased. The surplus portion of the corresponding loop material can be drawn between the fork and the loop loosening means , and the portion where the loop material is folded back can be shortened.

According to the control method of the belt loop sewing machine of the second aspect, the vicinity of the other end of the loop material is sandwiched between the forks and rotated to bend the loop material, and then the vicinity of the other end is set to the sewing product body. Before sewing, the cloth conveying means is moved in a direction in which one end of the loop material is separated from the fork, so that an excess portion of the loop material corresponding to the length from the fork to the other end of the loop material is separated from the fork. It can draw in between loop loosening means , and can shorten the part by which a loop material is turned back.

According to the control method of the belt loop sewing machine of the third aspect, the vicinity of the other end of the loop material is sandwiched between the forks and rotated to bend the loop material, and then the vicinity of the other end is set to the sewing product body. Before sewing, the length of the fork to the other end of the loop material is moved by moving the fork in a state where the loop material is sandwiched in a direction away from one end of the loop material sewn to the sewing product body. The surplus portion of the loop material corresponding to the above can be drawn between the fork and the loop loosening means , and the looped portion of the loop material can be shortened.

  And according to the belt loop sewing machine of the present invention, the aforementioned control method can be executed.

  As described above, according to the control method of the belt loop sewing machine and the belt loop sewing machine of the present invention, the length of the folded portion of the other end of the loop material is shortened as much as possible, and the desired belt loop is finished and sewed well. The effect that it can be done.

  Hereinafter, an embodiment of a belt loop sewing machine and a control method thereof according to the present invention will be described with reference to FIGS.

  Further, in the following description, the sewing machine main body 1 constituting the belt loop sewing machine and connected to the belt loop supply device 2 so as to be able to perform data communication is a single-needle tacking sewing machine having a known configuration as in the prior art. The description is omitted. Further, the direction parallel to the longitudinal direction of the loop member (left and right direction in FIG. 3), the direction from the presser 5 toward the loosening means 25 (rightward in FIG. 3) is the back side, and the opposite (leftward in FIG. 3) is the front side. To do. The sewn product main body on which the belt loop is formed is appropriately sewn with the loop material T while being switched and conveyed to the near side and the far side at the time of sewing. In addition, in the direction orthogonal to the longitudinal direction of the loop material, advance toward the transport path is defined as forward, and conversely, progress away from the transport path is defined as reverse.

  As shown in FIG. 1, the belt loop supply device 2 in the belt loop stitching machine of the present embodiment can feed the loop material T of the belt loop of a required length by rotating the pulse motor PM1 by a predetermined amount. The belt loop feeding means 11 and the cylinder C1 are driven to raise or lower the knife so that the fed loop material T can be cut at the cutting position. Clamping means 13, X-axis drive pulse motor XPM, and Y-axis drive, in which the loop material T can be clamped and released and the pressure for clamping the loop material T can be adjusted by the clamping pressure adjusting means 14 The direction of conveyance of the sewing product body M when the clamping means 13 is sewn by driving the pulse motor YPM. The moving means 15 and the pulse motor PM2 that are capable of moving from the orthogonal direction to the sewing position where the needle drop position NP is formed and moving back and forth along the transport path of the sewing product body M during sewing are moved forward and backward. A sewing product for sewing the belt loop by driving the cloth conveying means 16 and the cylinder C4, which can be moved along the conveying direction of the sewing product main body during sewing by rotating the sewing product main body M for sewing the belt loop. The body presser 17 capable of pressing the main body M, the start switch 18 for starting the belt loop sewing operation, and the clamping means 13 are integrally disposed, and the sewing machine main body M at the time of sewing is driven by driving the cylinder C5. The shaft is rotated by the movement of the sewing product body M from the direction orthogonal to the conveyance direction of the sewing machine onto the conveyance path and the driving of the rotary actuator RA1. The fork 24 that bends the loop material T of the belt loop of a predetermined length, the loosening amount is adjusted by the moving position of the pulse motor PM3, and the loosening rod is operated by driving the cylinder C6, so that the belt loop can be loosened as desired. A loop loosening means 25 or the like that can secure the amount is disposed. Each of these means is configured to be controlled by the control means 19 of the belt loop supply device 2.

  The control means 19 is constituted by a microcomputer comprising a CPU 20, ROM 21, RAM 22, and I / O interface 23. In the present embodiment, the RAM 22 has one end of the loop material T after the second tacking stopper S2 is sewn when the belt loop is sewed in a state folded as shown in FIG. The amount of movement of the loop loosening means 25 when moving the loop loosening means 25 arranged at the first position near the side to the second position away from the sewing position, and the loop material T of the clamping means 13 is clamped Various parameters such as clamping pressure are stored. The numerical values of these parameters can be changed by operating the operation panel 3.

  The control means 19 is connected to a known sensor 26 used for determining the movement position of the actuator and a belt loop thickness measuring means 27 capable of measuring the thickness of the loop material T of the belt loop. Although these mechanisms are assumed to be known, the description of the configuration and operation is omitted.

  FIG. 2 shows the control of the control means in the belt loop sewing machine of the present embodiment. Specifically, as shown in FIG. A first barb S1 and a second barb S2 are sewn on one end of T, and the other end of the loop material T folded back in the vicinity of the second barb S2 is further bent to the first barb side. FIG. 10 is a flowchart for explaining a process of sewing a belt loop by sewing a third bar stop S3 at the bent portion. In the following, as needed, an operation explanatory diagram of the belt loop supply device in the above-described conventional belt loop sewing process is shown as a reference diagram.

  As in the above-described conventional example, the clamping means 13 is a state in which the belt loop loop material T fed by the belt loop feeding means 11 and cut to a predetermined length by the belt loop cutting means 12 is clamped by the clamping means 13. Thus, it is assumed that the machine is waiting at a position separated from the sewing position.

  In the present embodiment, first, it is determined whether or not the operation panel 3 is operated in a state where the basic power supply is turned on (ST1). The amount of movement of the cloth conveying means 16 and the moving means 15 to the back side when the sewing product main body M is conveyed to the sewing position so as to sew the second bar clamp S2 by the panel operation, and the clamping that is changed during the movement When the parameter of the clamping pressure of the loop material T of the means 13 is updated, the numerical value is replaced with the corresponding parameter stored in the RAM 22 and stored (ST2).

  Further, when there is no panel operation (No in ST1) and when parameters are set, the start switch 18 is pushed down, and it waits for the belt loop supply means to be turned on (ST3).

  When the start switch 18 is pressed and turned on (Yes in ST3), the control device 19 starts the belt loop sewing operation. First, the cylinder C4 is driven to hold the body presser 17 to the sewing body main body. The sewing machine body M is lowered to the upper surface of M, and the sewn product main body M is pressed (ST4).

  Subsequently, the control device 19 drives the X-axis drive pulse motor XPM to move the moving means 15 in the X-axis direction, that is, the direction orthogonal to the conveying direction of the sewn product main body M at the time of sewing. The clamping means 13 in the state of clamping is advanced to the sewing position (see FIGS. 15 and 16) (ST5).

  Next, when the presser 5 of the sewing machine body 1 is lowered and the loop material T of the belt loop is pressed, the control device 19 drives the Y-axis drive pulse motor YPM to move the moving means 15 to the sewing machine body 1. Forward (left side in the figure), which is the side (see FIG. 17) (ST6).

  In this state, the first bar clamp S1 is sewn in the vicinity of one end of the loop material T of the belt loop, and after the sewing is finished, the presser 5 is raised (see FIG. 18) (ST7).

  Subsequently, the control device 19 drives the pulse motor PM2, moves the cloth conveying means 16 to the near side by the amount of movement stored in the RAM 22 and moves the sewn product main body M, and at the same time, the Y-axis drive pulse motor. The YPM is driven to move the moving means 15 backward to the back side (right side in the figure), and the loop material T is bent so as to cover the upper part of the first tacking stopper S1 (see FIG. 19) (ST8).

  Then, the presser 5 of the sewing machine body 1 is lowered again to the upper surface of the sewn product main body M, and after the loop material T and the sewn product main body M are pressed, the position which is in the vicinity of the first bar clamp S1 and on the far side from S1. The second tacking stopper S2 is sewn (see FIG. 20) (ST9).

  Subsequently, the control means 19 drives the cylinder C6 and the pulse motor PM3 to move the bar constituting the loop loosening means 25 forward to a position above the loop material T (see FIG. 21) (ST10). This position is the same as the insertion position of the bar of the loosening means 25 in the above-described conventional belt loop sewing.

  And the control means 19 drives the pulse motor PM2, and moves the sewn product main body M to the back side by the cloth conveyance means 16 (refer FIG. 22). At this time, the pulse motor PM3 of the loop loosening means 25 is also driven, and the loop loosening means 25 is also moved to the back side by the same distance as the cloth conveying means 16. By this movement, the position of the loop loosening means 25 with respect to the sewing machine body 2 is moved. However, the relative position of the loop loosening means 25 with respect to the loop material T does not change by the movement of the loop material T with the body as the sewn product main body M conveyed by the driving of the cloth conveying means 16. At the same time, the control unit 19 drives the Y-axis drive pulse motor YPM to move the moving unit 15, moves the clamping unit 13 to the near side, and loosens the loop so as to cover the upper side of the second tacking S 1. The loop material T is bent so as to fit on the bar of the means 25 (ST11).

  Then, the control means 19 drives the cylinder C5 to advance the fork 24, which is a belt loop bending means, in the vicinity of the needle drop position of the loop material T, and from the state where the loop material T is sandwiched between the other portions of the fork. 24 is rotated and the other end of the loop material T is bent (see FIG. 23) (ST12). By this bending operation, the loop material T is wound around the fork 24 and held in a bent state, and the other end of the T-loop material T held between the holding means 13 comes out of the holding means 13 and is looped by the holding means 13. The clamping state of the material T is released.

Subsequently, in the present embodiment, the pulse motor PM3 is driven, and the bar of the loop loosening means 25 is moved to the fork 24 according to the loop loosening parameter stored in the RAM 22 as shown in FIG. T is wound and moved in a direction away from the bending position of the fork 24, which is the position held in the bent state (ST13) . By this movement, the bar of the loop loosening means 25 pulls the loop material T in the back direction, so that the excess of the loop material T gathered on the fork 24 from the fork 24 to the other end of the loop material T is transferred to the fork 24. Through the gap, the fork 24 and the loop loosening means 25 are pulled to the bar side to add to the looseness of the belt loop and shorten the looped portion of the loop material T.

  Then, the presser 5 of the sewing machine body 1 is lowered again to the upper surface of the sewn product main body M to press the loop material T and the sewn product main body M, and the pulse motor XPM and the cylinder C6 are driven to move the moving means 15 and the loop loosening means 25. Is retracted away from the loop material T (see FIG. 24) (ST14), and the third barb S3 is sewn to the other end portion where the loop material T is folded as shown in FIG. 4 (ST15).

  Then, the cylinder C4 is driven, the body presser 17 is raised, and the belt loop sewing is finished (ST16).

As described above, according to the belt loop sewing machine of the present embodiment, one end side is sewn on the sewing product body, and the other end side of the loop material folded so as to be wound around the loop loosening means is wound around the fork. In the folded state, the loop loosening means is moved in a direction away from the fork folding position, so that the excess loop material from the fork to the other end of the loop material is drawn between the fork and the loop loosening means. The folded part can be shortened. Thereby, a desired belt loop can be sewn with good finish.

  Further, the amount of movement of the loop loosening means 25 can be arbitrarily changed by operating the operation panel 2, and the control means 19 drives the cylinder C6 and the pulse motor PM3 of the loop loosening means 25 based on the changed parameters. By controlling, a desired belt loop can be easily sewn.

  FIGS. 5 and 6 are explanatory views showing the state of drive control in the belt loop stitching machine of the second embodiment for sewing a belt loop having the same specifications as those of the first embodiment. The hardware configuration of the belt loop sewing machine according to the present embodiment is the same as that of the belt loop sewing machine according to the first embodiment described above, and a description thereof will be omitted.

  In the belt loop sewing machine according to the present embodiment, the control device 19 causes the other end portion side of the loop material T that is sewn to the sewn product main body M, as shown in FIG. 3 of the first embodiment. As shown in FIG. 5, from the state where the fork 24 inserted between the hooked sewing positions is rotated, the fork 24 is rotated and the loop material T is clamped and bent toward one end of the loop material T. The cloth conveying means 16 is moved to the back side in which one end of the loop material is away from the fork 24, and the sewn product main body M and the loop material T sewn at one end side to the sewn product main body M are moved. As a result of this movement, the surplus portion of the loop material T clamped in the fork 24 from the fork 24 to the other end of the loop material is drawn into the fork 24 and the bar side of the loop loosening means 25 through the fork 24. In addition to the slack of the belt loop, the looped portion of the loop material T is shortened. Therefore, in the present embodiment, the RAM 22 has the cloth conveying means in a state in which the other end side of the loop material T having one end side sewn on the sewn product main body M is held on the fork 24 and bent to the one end side. The amount of movement of the cloth conveying means 16 when moving 16 to the one end side of the loop material T is stored as a parameter. The numerical value of this parameter can be changed by operating the operation panel 3.

  Next, regarding the control of the control means in the belt loop sewing machine of this embodiment, the process of sewing the belt loop will be specifically described. In the following, as necessary, the operation explanatory diagram of the belt loop supply device in the above-described conventional belt loop sewing process is shown as a reference diagram.

  After sewing the second tacking stopper S2 in ST9 in the process of the first embodiment described above, the control means 19 drives the cylinder C6 and the pulse motor PM3 so that the bar of the loop loosening means 25 is positioned above the loop material T. Move to.

  And the control means 19 drives the pulse motor PM2, and moves the sewn product main body M to the back side by the cloth conveyance means 16 (refer FIG. 22). At this time, the pulse motor PM3 of the loop loosening means 25 is also driven, and the loop loosening means 25 is also moved to the back side by the same distance as the cloth conveying means 16. At the same time, the control means 19 drives the Y-axis drive pulse motor YPM to move the moving means 15 and moves the clamping means 13 to the near side, so that the loop is loosened so as to cover the upper side of the second barb S1. It is wound around the bar of the means 25 and the loop material T is bent.

  Then, the control means 19 drives the cylinder C5 to advance the fork 24, which is a belt loop bending means, in the vicinity of the needle drop position of the loop material T, and the loop material T is sandwiched between the other portions of the fork 24. The fork is rotated, the other end of the loop material T is wound and bent (see FIG. 23). By this bending operation, the other end of the loop material T held by the holding means 13 is removed from the holding means 13 and the holding state is released.

Subsequently, in the present embodiment, the pulse motor PM2 is further driven based on the parameter of the movement amount of the cloth conveying means 16 stored in the RAM 22, and as shown in FIG. 16, the one end of the loop material T is moved to the back side in a direction away from the fork 24. By this movement, the loop material T is pulled from the second bar clamp S2 to the sewn product main body M, so that the surplus portion of the loop material T gathered on the fork 24 from the fork 24 to the other end of the loop material is transferred to the fork 24. Through the gap, it is drawn between the fork 24 and the bar of the loop loosening means 25 to add to the slack of the belt loop and shorten the looped portion of the loop material T.

  Depending on the shape of the desired belt loop, the cloth conveying means 16 and the loosening means 25 are then moved to change the sewing position of the third bar clamp S3 in the sewn product body and the amount of looseness of the belt loop. Then, the presser 5 of the sewing machine body 1 is lowered again to the upper surface of the sewn product main body M to press the loop material T and the sewn product main body M, and the moving means 15 and the loop loosening means 25 are retracted away from the loop material T. As shown in FIG. 6, the third tacking S <b> 3 is sewn to the other end portion where the loop material T is folded.

Thus, according to the belt loop sewing machine of the present embodiment, the excess loop material corresponding to the length from the fork to the other end of the loop material is drawn between the fork and the loop loosening means , and the loop material The folded part can be shortened. As a result, the belt loop can be sewn with good finish.

  In the present embodiment, in ST1, the operation panel 3 is operated, and the amount of movement of the cloth conveying means 16 in the rear side direction after the loop material T is folded on the fork 24 can be arbitrarily changed. it can. And the control means 19 controls the drive of the cloth conveyance means 16 based on the parameter after the change, and can sew a desired belt loop easily.

  Further, FIGS. 7 to 10 are explanatory views showing a state of drive control in the belt loop sewing machine of the third embodiment for sewing a belt loop having the same specifications as those of the first embodiment. The hardware configuration of the belt loop sewing machine according to the present embodiment is the same as that of the belt loop sewing machine according to the first embodiment described above, and a description thereof will be omitted.

In the belt loop sewing machine of this embodiment, as shown in FIG. 7, the control device 19 sews the other end portion of the loop material T whose one end portion is sewn to the sewn product main body, with the third bark stopper S3. As shown in FIG. 8, the loop material T is wound around the fork 24 inserted immediately before the position, and the loop material T is wound around the loop material T. 9, the fork 24 is moved to the sewing position. As a result of this movement, the surplus portion of the loop material T that has been gathered on the fork 24 from the fork 24 to the other end of the loop material passes through the space between the forks 24 and the bars of the fork 24 and the loop loosening means 25 . It pulls in between and performs control which shortens the part by which the loop material T is return | folded. Therefore, in the present embodiment, the RAM 22 has a fork 24 inserted at the other end of the loop material T, one end of which is sewn on the sewn product main body M, immediately before the sewing position of the third barb S3. In addition, the amount of movement of the fork 24 when the fork 24 is moved to the sewing position in a state where the loop material T is bent toward one end side is stored as a parameter. The numerical value of this parameter can be changed by operating the operation panel 3.

  Next, regarding the control of the control means in the belt loop sewing machine of this embodiment, the process of sewing the belt loop will be specifically described. In the following, as needed, an operation explanatory diagram of the belt loop supply device in the above-described conventional belt loop sewing process is shown as a reference diagram.

  After sewing the second tacking stopper S2 in ST9 in the process of the first embodiment described above, the control means 19 drives the cylinder C6 and the pulse motor PM3 so that the bar of the loop loosening means 25 is positioned above the loop material T. Move to.

  And the control means 19 drives the pulse motor PM2, and moves the sewn product main body M to the back side by the cloth conveyance means 16 (refer FIG. 22). At this time, the pulse motor PM3 of the loop loosening means 25 is also driven, and the loop loosening means 25 is also moved to the back side by the same distance as the cloth conveying means 16. At the same time, the control means 19 drives the Y-axis drive pulse motor YPM to move the moving means 15 and moves the clamping means 13 to the near side, so that the loop is loosened so as to cover the upper side of the second tacking stopper S2. It is wound around the bar of the means 25 and the loop material T is bent. At this time, the position of the clamping means 13 in the longitudinal direction of the belt loop is closer to one end side of the loop material T sewn to the sewn product body M than the position of the clamping means in the same process of the conventional belt loop sewing machine. Position.

  Then, the control means 19 drives the cylinder C5 and advances the fork 24, which is a belt loop bending means, in the vicinity of the needle drop position of the loop material T. At this time, the position of the fork 24 in the longitudinal direction of the belt loop is closer to one end side of the loop material T sewn to the sewn product main body M than the position of the fork in the same process of the conventional belt loop sewing machine. is there. Subsequently, as shown in FIG. 7, the fork 24 is rotated from a state where the loop material T is sandwiched between the other portions of the fork 24, and the other end portion of the loop material T is wound and bent. By this bending operation, the other end of the loop material T held by the holding means 13 is removed from the holding means 13 and the holding state is released.

From this state, in the present embodiment, the control means 19 further drives the Y-axis drive pulse motor YPM based on the parameter of the movement amount of the fork 24 stored in the RAM 22, and moves as shown in FIG. The fork 24 formed integrally with the means 15 is moved to the front side which is a direction away from one end of the loop material T sewn to the sewn product main body M. As a result of this movement, as shown in FIG. 9, the surplus portion of the loop material T gathered from the fork 24 from the fork 24 to the other end of the loop material passes between the forks 24 and loosens the loop with the fork 24. Pulling in between the bars of the means 25, in addition to the looseness of the belt loop, shorten the looped portion of the loop material T.

  By the above movement, the positions of the clamping means 13 and the fork 24 in the longitudinal direction of the belt loop are the same as the positions of the clamping means and the fork in the same process of the conventional belt loop sewing machine.

  Then, the presser 5 of the sewing machine main body 1 is lowered again to the upper surface of the sewn product main body M, the loop material T and the sewn product main body M are pressed, and the moving means 15 and the loop loosening means 25 are retracted, as shown in FIG. The third barb S3 is sewn to the other end portion where the loop material T is folded.

  As described above, according to the belt loop sewing machine of the present embodiment, after the tape material T is held on the fork 24 and bent, the fork 24 is further moved to the front side, which is the operator side, so that the fork 24 The excess of the tape material T from the fork 24 to the other end of the loop material is drawn into the bar side of the fork 24 and the loop loosening means 25, and the length of the folded portion of the other end of the tape material T is minimized. The desired belt loop can be sewn with good finish by shortening.

  In the present embodiment, in ST1, the operation panel 2 is operated, and the amount of movement of the fork 24 after the loop material T is folded over the fork 24, that is, before the moving means in the Y-axis direction. The amount of movement to the side can be arbitrarily changed, and the control means 19 controls the drive of the Y-axis drive pulse motor YPM of the movement means 15 based on the parameter after the change, so that a desired belt can be easily obtained. Loops can be sewn.

  In addition, this invention is not limited to the said embodiment, It shall change variously as needed.

The block diagram which shows 1st Embodiment of the structure of the belt loop supply apparatus in the belt loop sewing machine of this invention. The flowchart which shows the operation control of the belt loop supply apparatus in the belt loop sewing machine of 1st Embodiment. Operation | movement explanatory drawing (1) of the principal part of the belt loop supply apparatus in the belt loop sewing process of the belt loop sewing machine of 1st Embodiment Operation | movement explanatory drawing (2) of the principal part of the belt loop supply apparatus in the belt loop sewing process of the belt loop sewing machine of 1st Embodiment Operation | movement explanatory drawing (1) of the principal part of the belt loop supply apparatus in the belt loop sewing process of the belt loop sewing machine of 2nd Embodiment Operation | movement explanatory drawing (2) of the principal part of the belt loop supply apparatus in the belt loop sewing process of the belt loop sewing machine of 2nd Embodiment Operation | movement explanatory drawing (1) of the principal part of the belt loop supply apparatus in the sewing process of the belt loop of the belt loop sewing machine of 3rd Embodiment Operation | movement explanatory drawing (2) of the principal part of the belt loop supply apparatus in the belt loop sewing process of the belt loop sewing machine of 3rd Embodiment Explanatory drawing (3) of operation | movement of the principal part of the belt loop supply apparatus in the sewing process of the belt loop of the belt loop sewing machine of 3rd Embodiment. Operation | movement explanatory drawing (4) of the principal part of the belt loop supply apparatus in the sewing process of the belt loop of the belt loop sewing machine of 3rd Embodiment Block diagram showing the configuration of the main parts of a general belt loop sewing machine Block diagram showing the configuration of a belt loop supply device in a conventional belt loop sewing machine A flowchart showing operation control of a belt loop supply device of a conventional belt loop sewing machine. Specification diagram of belt loops sewn with belt loop sewing machine (A) Explanatory drawing which shows the clamping means of the state which pinched | interposed the loop material of the belt loop, and was waiting in the position away from the sewing position, (B) The clamping means of the state which supplied the loop material of the belt loop to the sewing position is shown. Illustration Operation explanatory diagram of belt loop supply device in belt loop sewing process (1) Operation explanatory diagram of the belt loop supply device in the belt loop sewing process (2) Explanatory diagram of operation of belt loop supply device in belt loop sewing process (3) Operation explanatory diagram of the belt loop supply device in the belt loop sewing process (4) Operation explanatory diagram of the belt loop supply device in the belt loop sewing process (5) Operation explanatory diagram of the belt loop supply device in the belt loop sewing process (6) Operation explanatory diagram of belt loop supply device in belt loop sewing process (7) Operation explanatory diagram of belt loop supply device in belt loop sewing process (8) Operation explanatory diagram of belt loop supply device in belt loop sewing process (9) Operation explanatory diagram of belt loop supply device in belt loop sewing process (10) 4A and 4B are explanatory views showing the positional relationship between the clamping means and the fork of the belt loop supply device, in which FIG. 5A is a plane showing a state in which the clamping means holds the loop material, and FIG. Plan view showing

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sewing machine body 2 Belt loop supply device 3 Operation panel 4 Sewing machine table 5 Presser 11 Belt loop feeding means 12 Belt loop cutting means 13 Holding means 14 Holding pressure changing means 15 Moving means 16 Cloth conveying means 17 Body presser 18 Start switch 19 Control means 20 CPU
21 ROM
22 RAM
23 I / O interface 24 Fork 25 Loop loosening means 26 Various sensors 27 Belt loop thickness measuring means T Loop material M Sewing object body (body)
PM pulse motor XPM X-axis drive panel motor YPM Y-axis drive pulse motor C Cylinder S1 First bar clamp S2 Second bar clamp S3 Third bar clamp

Claims (4)

A cloth conveying means for conveying a sewing body, a clamping means for clamping a loop material constituting a belt loop, and a folding means provided with a fork for bending the end of the loop material by sandwiching and rotating the loop material; A moving means for moving the clamping means and the fork in the longitudinal direction of the loop material, and a loop movable in the longitudinal direction of the loop material for imparting looseness to the belt loop by winding the loop material around itself. using a loosening unit, the belt loop supply apparatus having a control means for controlling the driving of the respective unit, one end of the loop material after the stitched to the workpiece body, wrapped with the loop material to the loop loosening means, said In a belt loop sewing machine in which the other end of the loop material is bent by the fork and the vicinity of the other end is sewn to the sewing product body. A control method,
The vicinity of the other end of the loop material is sandwiched between the forks, the fork is rotated to bend the loop material, and then the loop material is wound before the vicinity of the other end is sewn to the sewing product body. The loop loosening means is moved away from the bending position of the fork in the longitudinal direction of the loop material, and the surplus portion at the other end of the loop material is drawn between the fork and the loop loosening means. A control method for a belt loop sewing machine characterized by the above. A cloth conveying means for conveying a sewing body, a clamping means for clamping a loop material constituting a belt loop, and a folding means provided with a fork for bending the end of the loop material by sandwiching and rotating the loop material; Moving means for moving the clamping means and the fork in the longitudinal direction of the loop material, and loosening of the loop movable in the longitudinal direction of the loop material for imparting looseness to the belt loop by winding the loop material around itself And a belt loop supply device having a control means for controlling the drive of each means, and after looping the loop material around the loop loosening means after sewing one end of the loop material on the sewing product body, the loop A control method in a belt loop sewing machine that bends the other end of the material and sews the vicinity of the other end to the sewn product body,
The direction in which one end of the loop material is separated from the fork after the vicinity of the other end of the loop material is sandwiched between the forks and rotated to bend the loop material and before the vicinity of the other end is sewn to the sewing product body. A control method for a belt loop sewing machine, wherein control for moving the cloth conveying means is performed. A cloth conveying means for conveying a sewing body, a clamping means for clamping a loop material constituting a belt loop, and a folding means provided with a fork for bending the end of the loop material by sandwiching and rotating the loop material; Moving means for moving the clamping means and the fork in the longitudinal direction of the loop material, and loosening of the loop movable in the longitudinal direction of the loop material for imparting looseness to the belt loop by winding the loop material around itself And a belt loop supply device having a control means for controlling the drive of each means, and after looping the loop material around the loop loosening means after sewing one end of the loop material on the sewing product body, the loop A control method in a belt loop sewing machine that bends the other end of the material and sews the vicinity of the other end to the sewn product body,
The fork in a state in which the loop material is sandwiched between the vicinity of the other end of the loop material with the fork and rotated to bend the loop material and then sewn the vicinity of the other end to the sewing product main body. A control method for a belt loop sewing machine, wherein control is performed to move the sewing machine body in a direction away from one end of the loop material sewn on the sewn product main body.   A belt loop sewing machine comprising control means for executing the control method according to any one of claims 1 to 3.