JP5110491B2 - Button attaching method and button attaching sewing machine - Google Patents

Description

  The present invention mainly sews a front button such as a flat button on the surface side of the fabric such as men's and women's clothing, and sews a force button on the back side of the fabric, and further, between the front button and the fabric. The present invention relates to a button attaching method and a button attaching sewing machine in which a root winding thread is wound around a button sewing thread positioned at a position to perform root winding sewing.

  Using a sewing machine to sew the front button and sew the force button to reinforce the sewing, and the root winding sewing to further secure the button, Set the front button and force button held in the button holder horizontally or in a substantially horizontal position at the specified button attachment position, and set the fabric at the needle drop position between both buttons. In this state, the button hole of both buttons A button attaching process in which both buttons are sewn to the fabric at the same time by moving both button holders independently in a horizontal two-dimensional direction so as to be sequentially positioned at the needle entry position, and after this button attaching process, both buttons The fabric edge so that the fabric edge on the fabric edge side is not in the way of the needle drop. Two steps such neck wrapping sewing step of winding the base-winding yarn around a button sewing thread becomes horizontal or substantially horizontal posture folded state on the opposite side is required and the needle drop position.

  When the above two processes are performed separately using a sewing machine dedicated to button attachment and a sewing machine dedicated to root winding, it is necessary to use two (two types) dedicated sewing machines, so the equipment cost is low. In addition to increasing the number of sewing machines, it is not only necessary to secure a large sewing space for installing (co-arranging) two sewing machines. After removing from the sewing machine, it must be set to the sewing machine side for the root winding and the root winding sewing must be performed. There is a problem of lack of sex.

2. Description of the Related Art Conventionally, a button sewing machine configured so that the above-described two processes, that is, a buttoning process and a root winding process can be performed by one (a kind) sewing machine has already been proposed (see, for example, Patent Document 1).
The conventional button-attached sewing machine disclosed in Patent Document 1 has a cloth with a force button after buttoning is completed at the front end of a cloth holding member that holds the cloth to which the front button is sewn in a folded state. A cloth holding means with a force button that can be held in a state where the end portion is folded back on the side opposite to the needle drop position is attached, and the cloth holding means with a force button is attached to the needle drop position at the tip of the cloth holding member. The position can be switched between a retracted position away from the position and a root winding sewing position near the needle drop position at the tip of the fabric holding member.
In such a conventional button sewing machine, the button holding step is performed by retracting the cloth holding means with force button away from the needle drop position at the tip of the cloth holding member, and then holding the cloth with force button. By switching the means close to the needle drop position at the tip of the fabric holding member, the buttoning step and the root winding sewing step can be performed using a single sewing machine, such as performing the root winding sewing step.

  Japanese Patent No. 4198023

However, in the conventional buttoned sewing machine disclosed in Patent Document 1, it is necessary to manually switch the position of the force button-equipped fabric holding means in the buttoning process and the root winding sewing process. In particular, when the buttoning process is completed and the process proceeds to the next root winding sewing process, the cloth with the force button is once removed from the cloth holding member, and then the position of the cloth holding means with the force button is switched. A large amount of manual work (manufacturer) at the time of transition from the buttoning process to the root winding sewing process, such as re-setting (changing) the cloth with the force button on the cloth holding means with the force button whose position has been switched. It takes time and effort.
Accordingly, although the buttoning process and the root winding sewing process can be performed using a single sewing machine, the above-described large and cumbersome work is required when switching between the two processes. There was a problem that the working efficiency could not be improved sufficiently.

  The present invention has been made in view of the above-mentioned circumstances. In addition to being able to perform a buttoning step and a root winding sewing step using a single sewing machine, both steps can be performed continuously without requiring manual operation. It is an object of the present invention to provide a buttoning method and a buttoned sewing machine that can achieve a significant improvement in workability and work efficiency.

  In order to achieve the above object, a buttoning method according to the present invention includes a front button held by a front button holder and a force button held by a force button holder, with a predetermined buttoning position via both button holders. Set the horizontal or substantially horizontal posture on the mounting plate and set the cloth at the needle drop position between the buttons, and the button holes of the front button and the force button are sequentially positioned at the needle drop position. A button attaching step for simultaneously sewing both buttons to the fabric while moving both button holders independently with respect to the needle drop position, and a sewing thread holder having a thread engaging portion at the front end on the front button side. The button button sewing thread is engaged with the button engagement thread located between the front button and the cloth in the thread engaging portion of the sewing thread holder. The sewing button holding process for holding the front button and fabric by the sewing thread holder and retracting the force button holder from the mounting plate, and the front button holder and sewing thread holder holding the front button and fabric are described above. A holder position separating process for moving the holder to a position separated from the mounting plate; a button reversing process for reversing the front button holder and the sewing thread holder so that both buttons are in a vertical or substantially vertical posture at the separated position; and Fold the end of the fabric that hangs downward from the button sewing location by reversing it to the side opposite to the front button side, and return the front button holder and the sewing thread holder that have been moved to the separated position to the above-mentioned placement plate. Invert button return process for further folding the fabric edge, and located between the front button and the sewing thread holder A neck winding sewing process in which a needle thread is alternately dropped on both sides of the sewing thread to sew the root winding thread around the sewing thread, and the front button holder and And a reverse reversing step in which the sewing thread holder is reversed and reversed in the reverse direction, and the sewing thread holder is moved backward, and these steps are sequentially performed.

  In order to achieve the same object as described above, the button-attached sewing machine according to the present invention includes a front button holder that holds the front button in a state that can be reversed between a horizontal or substantially horizontal posture and a vertical or substantially vertical posture; A force button holder that holds the force button in a horizontal or substantially horizontal position, a placement plate that is installed at a predetermined button attachment position and can support the force button holder, and the front button holder and the force button holder are placed horizontally. Or two button holder moving means for moving each separately along a substantially horizontal plane, and setting the front button and the force button in a horizontal or substantially horizontal posture via the both button holders on the button mounting plate, and When the fabric is set at the needle drop position between the two buttons, the two button holders are moved so that the button holes of these buttons are sequentially positioned at the needle drop position. By independently controlling the movement of the step with respect to the needle entry position, the front button and the force button are sewn to the fabric at the same time, and both buttons are reversed to a vertical or substantially vertical posture so that they are between the front button and the fabric. In the button sewing machine that is configured to perform the root winding sewing that wraps the root sewing thread around the button sewing thread by alternately dropping the needle sewing on both sides of the passed button sewing thread, the front button and the force button are made of cloth. A sewing thread holder capable of holding the front button and the cloth by engaging with the button sewing thread passed between the front button and the cloth, and moved forward along the cloth surface on the front button side. The sewing thread holder and the front button holder are moved to a position separated from the mounting plate, and the front button holder and the sewing thread holder are moved vertically or both at the spaced position. Neck winding sewing switching mechanism for reversing the front button holder and sewing thread holder after reversing them to the vertical position, and for reversing the buttons to the vertical or substantially vertical position. A fabric end folding means is provided for folding the fabric end hanging downward from the sewing location onto the mounting plate, and folding the fabric end into the opposite side to the front button side.

According to the button attachment method and the button attachment sewing machine according to the present invention having the above-described characteristic configuration, the front button and the force button set in the horizontal or substantially horizontal posture on the mounting plate via each button holder are set to the needle drop position. By independently controlling the movement, the front button and the force button are sewn simultaneously on the fabric set at the needle entry position between the buttons regardless of the number of button holes and the hole pitch of both buttons. A predetermined button can be attached. After the button is attached, the front button and the cloth are held by the front button holder and the sewing thread holder by engaging the thread engaging portion of the sewing thread holder with the button sewing thread between the front button and the cloth. The front button holder and the sewing thread holder) are moved to a position separated from the mounting plate, and the front button holder and the sewing thread holder are reversed so that both buttons are in a vertical or substantially vertical posture at the separated position, and are reversed. By moving the rear button holder and sewing thread holder back onto the mounting plate, the end of the cloth that hangs downward from the button sewing position is folded to the opposite side of the front button, and the end of the cloth is a needle. It is possible to perform predetermined root winding sewing so as not to obstruct the fall.
Therefore, by providing a process or mechanism for reciprocating the front button holder and the sewing thread holder between the position on the placing plate and the position separated from each other, the button attaching process and the subsequent root winding sewing process can be performed by using one sewing machine. As well as being able to be used, when shifting to the root winding sewing process after the buttoning process, it is not necessary to manually change or reattach the cloth that has been buttoned, The buttoning process and the neckline sewing process can be performed continuously. As a result, the workability and work efficiency of buttoning including the sewing of the force button and the root winding can be remarkably improved, and the productivity of the buttoned clothes can be increased.

  In the buttoning method according to the present invention, the holder position separation movement step is a step of moving the front button and the fabric held by the front button holder and the sewing thread holder substantially horizontally from the placement plate toward the sewing work position. And a step of moving the table button holder and the sewing thread holder reversed after the button reversing step of reversing both buttons at the horizontally moved sewing work position from the sewing work position to the upper position thereof, and In the reverse button returning step, the front button holder and the sewing thread holder that have been moved upward are moved approximately horizontally from the upper position of the sewing work position to the upper position of the mounting plate, and then moved downward from the position onto the mounting plate. The procedure (Claim 2) or the holder position separation movement step is a front button holder and a sewing thread holder. The table button and the cloth held by the above are moved upward from the placement plate to the upper position of the placement plate, and the reverse button return step is moved upward to the upper position of the placement plate. The procedure is such that the fabric end portion after the reversing step at that position is a step of moving downward from the upper position of the mounting plate onto the mounting plate while folding the fabric end portion to the side opposite to the front button side by the folding means (claim) Any of 3) may be adopted.

  Further, in the button sewing machine according to the present invention, as the root winding sewing switching mechanism, the sewing thread holder and the front button holder are moved substantially horizontally from the above-mentioned placing plate toward the sewing work position and reversed. Thereafter, the sewing machine is moved upward from the sewing work position to the upper position of the sewing work position, and the inverted button button holder and sewing thread holder are returned from the upper position of the sewing work position to the upper position of the mounting plate substantially horizontally. It is possible to easily realize the buttoning method according to the procedure as in the former by using one that is configured to move downward from the position onto the mounting plate after being moved (Claim 5). Further, as the root winding sewing switching mechanism, the sewing thread holder and the front button holder are moved upward from the mounting plate to the upper position of the mounting plate and reversed. After that, it is possible to easily realize the button attaching method according to the latter procedure by using the one configured to move downward from the upper position of the mounting plate onto the mounting plate (Claim 7). Is possible.

  Further, in the button sewing machine according to the present invention, when both buttons are inverted to the vertical or substantially vertical posture, the end of the cloth that hangs downward from the button sewing position is placed on the side opposite to the front button side before the root winding sewing. As the cloth folding means for folding, when the table button holder and the sewing thread holder after reversing are moved back approximately horizontally from the upper position of the sewing work position to the upper position of the mounting plate, the edge portion of the cloth is brought into contact with the mounting plate. Thus, the means for folding the fabric end portion to the side opposite to the front button side (Claim 6), or the front button holder and the sewing thread holder after being inverted are moved downward from the upper position of the mounting plate onto the mounting plate. Any means may be used to push the fabric end portion into the side opposite to the front button side before folding, and in particular, the means for folding by bringing the fabric end portion into contact with the placing plate. Take It is preferable to. In this case, for example, it is not necessary to install a forced pushing mechanism such as air blowing, the structure is simple, and it is not necessary to provide a special process for folding the edge of the fabric, so that the efficiency of buttoning work is reduced. Can be further improved.

1 is a schematic overall perspective view of a sewing machine with a button according to the present invention. It is a disassembled expansion perspective view of the force button holder in the sewing machine with a button concerning the present invention. It is an enlarged perspective view showing a front button holder, its drive mechanism and a reversing mechanism in the button sewing machine according to the present invention. FIG. 3 is an enlarged perspective view showing a sewing thread holder and its movement drive mechanism in the button sewing machine according to the present invention. It is a partially cutaway enlarged perspective view showing a root winding sewing switching mechanism in a button sewing machine according to the present invention. It is an enlarged side view of the partial cross section explaining one operation state of a root winding sewing switching mechanism same as the above. It is an expanded side view of the partial cross section explaining the other operation state of a root winding sewing switching mechanism same as the above. (A)-(f) is an expansion schematic front view of the principal part explaining an example of a buttoning procedure. (G)-(l) is an expansion schematic front view of the principal part explaining an example of a buttoning procedure. (A)-(f) is an expansion schematic front view of the principal part explaining another example of a buttoning procedure. (G)-(k) is an expansion schematic front view of the principal part explaining another example of a buttoning procedure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic overall perspective view of a button sewing machine according to the present invention. 2 to 5 are perspective views showing the configuration of the main parts of the sewing machine with buttons according to the present invention.

  As shown in FIG. 1, the buttoned sewing machine 1 includes a needle 3 that reciprocates up and down at a fixed position via a lifting drive mechanism provided in a sewing machine arm 2, a front button holder 4 that holds a front button B, A force button holder 5 for holding the force button P, a placing plate 6 on which the force button holder 5 can be placed and supported, a sewing thread holder (see FIG. 3) 7, a root winding sewing switching mechanism 8 and a fabric presser 9 It is equipped with.

  The force button holder 5 is fixed to a distal end portion of a swing arm 12 that can rotate and swing around the axis of the horizontal shaft 11 by contraction and extension of the cylinder 10. As shown in FIG. 2, a pair of left and right holding members 13 and 13 for holding the force button P elastically from both sides in the radial direction are provided on the upper surface of the distal end portion of the force button holder 5 in the rotational and swinging direction. The pair of auxiliary spring members 14 and 14 for assisting the holding force of the force button P by the pair of holding members 13 and 13 and the force button P are sandwiched and held between the force button holder 5 and the cloth is formed on the upper surface. A button receiving plate 15 capable of setting W is attached.

The force button holder 5 holds the force button P on the pair of hugging members 13 and 13 and the button receiving plate 15 at the front end portion by the rotational swing around the axis of the horizontal shaft 11 accompanying the contraction and extension of the cylinder 10. Thus, it is configured to be switchable between a position where it is placed and supported on the placement board 6 and a position retracted from the placement board 6 to the front side of the sewing machine, that is, the sewing work side after the button is attached. .
Needle drop holes 5a and 15a are formed at the distal ends of the force button holder 5 and the button receiving plate 15, and the needle drop holes 6a are also formed in the mounting plate 6 corresponding to these. The needle drop holes 5a and 15a on the side of the force button holder 5 are opened at their tips so as to allow the force button holder 5 to come out from the button sewing thread N1 described later when the force button holder 5 is switched to the retracted position and swung after the button is attached. Has been.

  The horizontal shaft 11 and the mounting plate 6 are spanned and fixed across a pair of left and right force button holder arms 27 and 27. The pair of left and right force button holder arms 27 and 27 are movable frames (known in the art) that can be driven and moved in the front-rear and left-right directions (Y1-Y2 direction and X1-X2 direction) orthogonal to each other in a horizontal plane via two stepping motors. Therefore, the force button holder 5 and the mounting plate 6 are configured to be capable of driving and moving in the front-rear and left-right directions via the movable frame.

  As shown in FIG. 3, the front button holder 4 includes a holder body 16C, a pair of movable holding members 16A and 16B that hold the front button B from both radial sides, and a pair of movable holding members 16A and 16B. An air cylinder 17 that switches between a state in which the front button B is clamped and a state in which the front button B is released by linearly reciprocatingly sliding is provided. The holder body 16C of the front button holder 4 includes the sewing thread holder 7 and the air cylinder 17 An air cylinder 18 for driving and moving the sewing thread holder 7 is attached.

  The front button holder 4 is supported at the lower end portion of the button holder arm 19 so as to be rotatable about a horizontal axis, and the front button B is connected to the front button B via the connecting rods 21 and 22 by the expansion and contraction of the air cylinder 20. It is configured to be switchable between a state in which it is held in a horizontal or substantially horizontal posture and a state in which it is reversed to a vertical or substantially vertical posture.

  As shown in FIG. 4, the sewing thread holder 7 is fixed to the tip of a holder mounting member 24 that is penetrated and supported by the sewing thread holder base 23 so as to be movable in the horizontal direction. A sewing thread engaging portion 7 a is formed at the tip of the sewing thread holder 7. The sewing thread holder base 23 is fixedly supported on the holder main body 16C of the front button holder 4 via an attachment piece 25 and a screw 26. The other end of the holder mounting member 24 is fixed to the tip of the movable rod 18a of the air cylinder 18, and the sewing thread holder 7 moves forward and backward in the direction of the arrow y1-y2 by the contraction and extension of the air cylinder 18, and the engagement The joint portion 7a is configured to be switchable between a state in which the joint portion 7a is engaged with the button sewing thread N1 (see FIG. 8) after the button is attached and a state in which the joint part 7a is detached from the button sewing thread N1.

As shown in FIG. 5, the button holder arm 19 is fixedly supported by a button holder arm base 28. Between the button holder arm base 28 and the button holder arm base guide mounting base 29 disposed below the button holder arm base 28, there is provided a button holder arm base ascending / descending drive mechanism which is one of the components of the root winding sewing switching mechanism 8. It has been. The button holder arm base guide mounting base 29 is a movable table 30 that can be driven and controlled in the front-rear and left-right directions (Y1-Y2 direction and X1-X2 direction) orthogonal to each other in a horizontal plane via two stepping motors. As a result, the front button holder 4 and the sewing thread holder 7 are controlled to move in the front / rear and left / right directions independently of the force button holder 5 and the placing plate 6 via the movable table 30. It is configured to be possible.
In addition, since the drive movement mechanism of the movable table 30 and its control mechanism are well-known, detailed description and illustration are abbreviate | omitted.

The root winding sewing switching mechanism 8 is configured as follows.
That is, as shown in FIG. 5, the button holder arm base 28 has a plurality (four in the drawing) of rod-shaped guides 31 with respect to the button holder arm base guide mounting base 29 fixed on the movable table 30. Through the vertical direction Z1-Z2. An air cylinder 32 is fixedly supported on the upper surface of the button holder arm base 28, and a lower end portion of the movable rod 33 in the air cylinder 32 is screwed and fixed to a screw hole 34 formed in the button holder arm base 28. .

  The upper end portion of the bolt 35 fixed to the button holder arm base guide mounting base 29 and erected upward is brought into contact with the button holder arm base 28 to restrict the ascending position of the button holder arm base 28. A nut-like upper limit stopper 36 is screwed through a lock nut 37 and a washer 38 so that the position can be adjusted up and down. Further, the button holder arm base 28 has a lower limit stopper 40 for restricting the lowering position of the button holder arm base 28 by contacting a stopper contact 39 fixed to the button holder arm base guide mounting base 29, and a lock nut 41. The position can be adjusted up and down through the

  In each of the above components, the air cylinder 32 is operated to extend and retract the movable rod 33, whereby the button holder arm base 28 is moved to the lower limit position where the lower limit stopper 40 abuts against the stopper 39 as shown in FIG. 7 and a button holder arm base that can be switched between a state where the button holder arm base 28 is raised to an upper limit position where the button holder arm base 28 abuts against the upper limit stopper 36, as shown in FIG. An elevating drive mechanism is configured, and the above-mentioned neckline sewing is performed by a combination of the button holder arm base elevating drive mechanism, the drive moving mechanism and control mechanism of the movable table 30, and the reverse switching mechanism of the front button holder 4. A switching mechanism 8 is configured.

  The cloth presser 9 is brought into contact with the upper surface of the cloth W set on the button receiving plate 15 of the force button holder 5 from the diagonally upper side through the cylinder 42, thereby causing excessive movement and bending of the cloth W. Is to prevent.

Next, the first button attaching procedure (operation) by the button attaching sewing machine 1 configured as described above will be described in detail in the order of steps based on FIG . 8 and FIG .
1. Setting process: As shown in FIG. 8A, the front button B held by the front button holder 4 and the force button P held by the force button holder 5 are placed via the button holders 4 and 5. A predetermined buttoning position on the plate 6, that is, a position on the needle drop hole 6 a is set in a horizontal posture, and the fabric W is set on the force button P, and the fabric presser 9 is placed on the upper surface of the set fabric W The dough W is brought into contact with the cloth to hold the cloth W in a predetermined position.
In this setting step, the button holder arm base 28 is lowered to the lower limit position as shown in FIG. 6, and the front button holder 4 holds the front button B in a horizontal or substantially horizontal posture. It is switched to the state to do.

  2. Buttoning process: The front and rear button holders 4 and 5 are moved back and forth so that the button hole of the front button B and the button hole of the force button P are sequentially positioned at the needle drop position via the movable table 30 and a movable frame (not shown). As shown in FIG. 8B, the needle 3 is reciprocated up and down with respect to the needle drop hole while independently controlling movement in the left and right directions (Y1-Y2 direction and X1-X2 direction). Buttons B and P are sewn simultaneously on the front and back surfaces of the fabric W. After sewing both the buttons B and P, the sewing thread on the side continuous with the needle 3 is cut.

  3. Sewing button holding step: As shown in FIG. 8 (c), the sewing thread holder 7 advances and moves in the direction of arrow y1 shown in FIG. The thread engaging portion 7a of the holder 7 is engaged with the button sewing thread N1 positioned between the front button B and the fabric W. Thus, the front button B and the fabric W are held by the front button holder 4 and the sewing thread holder 7. Thereafter, the force button holder 5 is sewn on the front side of the sewing machine (operator) from the position where it is placed and supported on the placing plate 6 by the rotational swing around the axis of the horizontal shaft 11 as the cylinder 10 contracts and extends. The cloth presser 9 is retracted to a position diagonally upward from the cloth W.

  4). Holder position separation movement process: As shown in FIG. 8D, the front button holder 4 and the sewing thread are moved by moving the front button holder 4 and the sewing thread holder 7 forward (Y2 direction) via the movable table 30. The front button B, the force button P, and the cloth W held by the holder 7 are horizontally moved from the placement plate 6 toward the position away from the operator.

  5). Button reversing step: By causing the air cylinder 20 to contract, the front button holder 4 and the sewing thread holder 7 that have been moved to the operator-side separation position are rotated about the horizontal axis, as shown in FIG. In addition, the front button B and the force button P are inverted so as to have a vertical or substantially vertical posture. Along with this reversal, the fabric end portion We on the fabric edge side of the button attachment portion is in a state of hanging downward.

  6). Ascending step: After the button reversing step, the front button holder arm base 28 is raised to the upper limit position shown in FIG. As the front button holder arm base 28 is raised, the reversed front button holder 4 and sewing thread holder 7 are moved upward (Z1 direction) through the button holder arm 19 as shown in FIG. 8 (f). Is done.

7). Reverse button return step: The front button holder 4 and the sewing thread holder 7 that have been moved upward are moved horizontally in the rearward direction (Y1 direction) via the movable table 30, as shown in FIG. 4 and the sewing thread holder 7 are moved back to the upper position of the placing plate 6. At this time, the fabric end portion We hanging downward from the button attachment portion is brought into contact with the placing plate 6, whereby the fabric end portion We is bent to the force button P side opposite to the front button B side.
As described above, the fabric end portion We is brought into contact with the placing plate 6 during the horizontal movement in the rear direction (Y1 direction) of the front button holder 4 and the sewing thread holder 7, and the fabric end portion We is moved to the force button P side. In order to bend reliably, the upper limit position of the front button holder arm base 28 is adjusted and set in advance according to the hanging length of the fabric end portion We hanging downward from the button attachment point.

8). Lowering step: By causing the air cylinder 32 to contract, the front button holder arm base 28 is lowered to the lower limit position shown in FIG. As the front button holder arm base 28 is lowered, the inverted front button holder 4 and sewing thread holder 7 are lowered downward (Z2 direction) through the button holder arm 19 as shown in FIG. 9 (h) . The fabric end portion We that has been moved and bent is further folded until it is in a substantially horizontal position on the placement plate 6.

9. Neck winding sewing process: The front button holder 4 and the sewing thread holder 7 are reciprocated at predetermined pitches in the front-rear Y1-Y2 direction and the left-right X1-X2 direction via the movable table 30, thereby FIG. 9 (i). As shown in FIG. 4, the needle 3 is dropped alternately on both sides of the button sewing thread N1 located between the front button B and the sewing thread holder 7, and the root thread N2 is wound around the button sewing thread N1 and sewed. After the root winding, the sewing thread (root winding thread) on the side continuous with the needle 3 is cut. By such root winding sewing, the button sewing thread N1 is reinforced and the button attachment is ensured.

10. Post-processing step: After the root winding sewing step, the front button holder arm base 28 is raised to the upper limit position shown in FIG. 7 by extending the air cylinder 32. As the front button holder arm base 28 is raised, the front button holder 4, the sewing thread holder 7 and the fabric W are moved upward (Z1 direction) through the button holder arm 19 as shown in FIG. Is done. Subsequently, the front button holder 4 and the sewing thread holder 7 are rotated in the reverse direction around the horizontal axis by extending the air cylinder 20 at this raised position, as shown in FIG. The front button B and the force button P are returned to the horizontal or substantially horizontal posture and reversed. Finally, the sewing thread holder 7 is retracted and moved in the direction of the arrow y2 shown in FIG. 4 along the upper surface of the fabric W by the extension operation of the air cylinder 18, and the pair of movable buttons of the front button holder 4 is moved via the air cylinder 17. The holding of the front button B is released by linearly driving and sliding the holding members 16A and 16B, and as shown in FIG. 9 (l), the predetermined button attachment with the force button P and the root winding sewing is performed. To complete.

  In the case of the first buttoning procedure (operation) described in 1 to 10 above, each process is automatically and continuously performed, so that both the button button B and the force button P are buttoned and the roots thereafter. In addition to being able to perform winding and sewing using a single sewing machine, when shifting to the root winding sewing process after the buttoning process, the cloth W that has been buttoned is manually replaced or reattached. Therefore, it is possible to achieve a significant improvement in workability and work efficiency of predetermined button attachment.

In addition, after the button reversing step, the reversed front button holder 4 and sewing thread holder 7 are once moved upward in the upward direction (Z1 direction) as shown in FIG. 4 and the sewing thread holder 7 are moved back to the upper position of the placing plate 6, the reverse end returning step, as shown in FIG. 6, the fabric end portion We can be bent to the force button P side opposite to the front button B side. Therefore, it is not necessary to install a special mechanism for folding the fabric end portion We so as not to disturb the needle drop during the next root winding sewing process, for example, air blowing and a retractable folding tool, and the configuration is simple. It is easy to plan.

Next, the second button attaching procedure (operation) by the button attaching sewing machine 1 configured as described above will be described in detail in the order of steps based on FIG . 10 and FIG .
1. Setting step: exactly the same as 1 in the case of the first button attaching procedure, and held in the front button B and the force button holder 5 held in the front button holder 4 as shown in FIG. The force button P is set in a horizontal position at a predetermined button attachment position on the mounting plate 6, that is, a position on the needle drop hole 6a, through the button holders 4 and 5, and the cloth is placed on the force button P. W is set, and the fabric presser 9 is brought into contact with the upper surface of the set fabric W to hold the fabric W in a predetermined position.
In this setting step, the button holder arm base 28 is lowered to the lower limit position as shown in FIG. 6, and the front button holder 4 holds the front button B in a horizontal or substantially horizontal posture. It is in the state to do.

2. Button attaching step: exactly the same as 2 in the first button attaching procedure (operation), and the button holders 4 and 5 are attached to the buttons of the front button B via the movable table 30 and the movable frame (not shown). The needle 3 is moved with respect to the needle drop hole while independently controlling the movement in the front-rear and left-right directions (Y1-Y2 direction and X1-X2 direction) so that the hole and the button hole of the force button P are sequentially positioned at the needle drop position. By reciprocating up and down, both buttons B and P are sewn simultaneously on the front and back surfaces of the fabric W as shown in FIG . After sewing both the buttons B and P, the sewing thread on the side connected to the needle 3 is cut.

3. Sewing button holding process: exactly the same as 3 in the first buttoning procedure (operation) . As shown in FIG. 10 (c), the sewing thread holder 7 is moved into the fabric W by the contraction operation of the air cylinder 18. The thread engaging portion 7a of the sewing thread holder 7 is engaged with the button sewing thread N1 located between the front button B and the fabric W by moving forward in the direction of the arrow y1 shown in FIG. Thus, the front button B and the fabric W are held by the front button holder 4 and the sewing thread holder 7. After that, the force button holder 5 is sewn on the front side of the sewing machine (operator) from the position where it is placed and supported on the placing plate 6 by the rotational swing around the axis of the horizontal shaft 11 as the cylinder 10 contracts and extends. ) Side, and the material presser 9 is retracted to a position diagonally away from the material W.

4). Holder position separation movement step: By extending the air cylinder 32, the front button holder arm base 28 is raised to the upper limit position shown in FIG. As the front button holder arm base 28 is raised, the front button holder 4 and the sewing thread holder 7 are lifted upward (in the Z1 direction) via the button holder arm 19, and loaded as shown in FIG. 10 (d) . It is moved away to a position immediately above the mounting plate 6.

5. Button reversing step: By causing the air cylinder 20 to contract, the front button holder 4 and the sewing thread holder 7 that have been moved to the position immediately above the placing plate 6 are rotated about the horizontal axis, and FIG. ), The front button B and the force button P are inverted so as to have a vertical or substantially vertical posture. Along with this reversal, the fabric end portion We on the fabric edge side of the button attachment portion is in a state of hanging downward.

6). Folding step of the fabric end: As shown by the arrow in FIG. 10 (f), the fabric end is pushed by blowing air from the front button B side toward the fabric end We hanging downward due to inversion . The part We is bent to the side opposite to the front button B side.

7). Reverse button return step: By retracting the air cylinder 32, the front button holder arm base 28 is lowered to the lower limit position shown in FIG. When the front button holder arm base 28 is lowered, the inverted front button holder 4 and sewing thread holder 7 are lowered downward (Z2 direction) through the button holder arm 19 as shown in FIG. The fabric end portion We which is moved and bent is folded on the placing plate 6 so as to be in a substantially horizontal posture.

8). Neck winding sewing process: exactly the same as 9 in the first buttoning procedure (operation), and the front button holder 4 and the sewing thread holder 7 are moved in the front-rear Y1-Y2 direction and left-right X1- through the movable table 30. By reciprocating at a preset pitch in the X2 direction, the needles 3 are alternately dropped on both sides of the button sewing thread N1 positioned between the front button B and the sewing thread holder 7 as shown in FIG. Then, the root thread N2 is wrapped around the button sewing thread N1 and sewed. After the root winding, the sewing thread (root winding thread) on the side continuous with the needle 3 is cut. By such root winding sewing, the button sewing thread N1 is reinforced and the button attachment is ensured.

9. Post-processing step: exactly the same as 10 in the first buttoning procedure (moving), and after the root winding sewing step, the air cylinder 32 is extended to move the front button holder arm base 28, The position is raised to the upper limit position shown in FIG. As the front button holder arm base 28 is raised, the front button holder 4, the sewing thread holder 7 and the fabric W are moved upward (Z1 direction) through the button holder arm 19 as shown in FIG. Is done. Subsequently, by extending the air cylinder 20 at this raised position, the front button holder 4 and the sewing thread holder 7 are rotated in the opposite directions around the horizontal axis, as shown in FIG. The front button B and the force button P are returned to the horizontal or substantially horizontal posture and reversed. Finally, the sewing thread holder 7 is retracted and moved in the direction of the arrow y2 shown in FIG. 4 along the upper surface of the fabric W by the extension operation of the air cylinder 18, and the pair of movable buttons of the front button holder 4 is moved via the air cylinder 17. The holding of the front button B is released by linearly driving and sliding the holding members 16A and 16B, and as shown in FIG. 11 (k), the predetermined button attachment with the force button P and the root winding sewing is performed. To complete.

  In the case of the second buttoning procedure (operation) described in 1 to 9 above, as in the case of the first buttoning procedure, buttoning of both the front button B and the force button P and the subsequent root winding sewing are performed. In addition to being able to perform using a single sewing machine, when shifting to the root winding sewing process after the buttoning process, the cloth W that has been buttoned can be manually replaced or reattached, etc. Complicated labor is not required, and a significant improvement in workability and work efficiency of predetermined button attachment can be achieved.

Further, when the second buttoning procedure is adopted, after the buttoning step, the front button holder 4 and the sewing thread holder 7 are moved upward to the upper position of the placing plate 6 as shown in FIG. Since the button reversing step can be performed at the raised position, the step of reciprocating the front button holder 4 and the sewing thread holder 7 in the horizontal direction can be omitted, and the buttoning work efficiency can be further improved.

  In the second buttoning procedure, air is most preferably used as the folding means for bending the fabric end portion We. However, a driving pusher may be used, or a rod-shaped member held by the operator's hand. You may make it fold by pushing.

DESCRIPTION OF SYMBOLS 1 Button attaching sewing machine 4 Front button holder 5 Force button holder 6 Mounting plate 7 Sewing thread holder 8 Neck winding sewing change mechanism 30 Movable table (button holder moving means)
B Front button P Power button W Fabric We Fabric edge N1 Button sewing thread N2 Neck winding thread

Claims (8)

The front button held by the front button holder and the force button held by the force button holder are set horizontally or substantially horizontally on the mounting plate at a predetermined button attachment position via both button holders. A setting process for setting the fabric at the needle drop position between the buttons;
A buttoning step for simultaneously sewing both buttons to the fabric while moving both button holders independently with respect to the needle drop position so that each button hole of the front button and the force button is sequentially positioned at the needle drop position;
A button sewing thread located between the front button and the cloth is moved to the thread engaging part of the sewing thread holder by moving a sewing thread holder having a thread engaging part formed at the tip part thereof along the cloth surface on the front button side. A sewing button holding step of holding the front button and the fabric by the front button holder and the sewing thread holder, and retracting the force button holder from the mounting plate;
A holder position separation moving step of moving the front button holder and the sewing thread holder holding the front button and the fabric to a position separated from the mounting plate,
A button reversing step of reversing the front button holder and the sewing thread holder so that both buttons are in a vertical or substantially vertical posture at the spaced positions;
The fabric end that hangs downward from the button sewing position due to the inversion is bent to the side opposite to the front button side, and the front button holder and the sewing thread holder that have been moved to the separated position are moved back onto the mounting plate. Reversing button return process to further fold the fabric edge,
A root winding stitching process in which a button sewing thread located between the front button and the sewing thread holder is sandwiched and alternately needle-dropped on both sides of the button sewing thread to wrap and sew the root winding thread around the button sewing thread;
A reverse reversing step in which the front button holder and the sewing thread holder are reversed and reversed in a reverse direction so that the front button and the force button are in a horizontal or substantially horizontal posture, and the sewing thread holder is moved backward. A buttoning method characterized by sequentially performing steps.   The holder position separation movement step includes a step of moving the front button and the fabric held by the front button holder and the sewing thread holder substantially horizontally from the mounting plate to the sewing work position, and the horizontally moved sewing work. And a step of moving the front button holder and the sewing thread holder which are reversed after the button reversing step for reversing both buttons at the position from the sewing manufacturer position to the upper position thereof, and the reversing button returning step is a lifting movement. 2. The step of moving the front button holder and the sewing thread holder, which have been moved substantially horizontally from the upper position of the sewing manufacturer position to the upper position of the mounting plate, and then moving downward from the position onto the mounting plate. The button attachment method described.   The holder position separation movement step is a step of moving the front button and the cloth held by the front button holder and the sewing thread holder upward from the placement plate to the upper position of the placement plate, and the reverse button In the returning process, the material is moved upward to the upper position of the mounting plate, and the fabric end after the reversing process at that position is folded by the folding means to the side opposite to the front button side, and placed from the upper position of the mounting plate. The buttoning method according to claim 1, wherein the buttoning method is a step of moving down on the plate. A front button holder that holds the front button in a state that can be reversed between a horizontal or substantially horizontal posture and a vertical or substantially vertical posture, a force button holder that holds the force button in a horizontal or substantially horizontal posture, and a predetermined button attachment position. A mounting plate installed and capable of mounting and supporting the force button holder; and two button holder moving means for moving the front button holder and the force button holder separately along a horizontal or substantially horizontal plane, With the front button and force button set horizontally or substantially horizontally on the mounting plate via the button holders, and the fabric set at the needle drop position between the buttons, each button of these buttons By controlling the movement of the two button holder moving means independently of the needle drop position so that the holes are sequentially positioned at the needle drop position, the front button and force At the same time, the button is sewn to the fabric, and both buttons are reversed vertically or approximately vertically, and the button sewing thread passed between the front button and the fabric is sandwiched between them so that the needles fall alternately on both sides of the button sewing thread. In a button sewing machine that is configured to perform root winding sewing around the root winding thread,
After the front button and force button are sewn on the fabric, the front button is moved forward along the fabric surface on the front button side and engaged with the button sewing thread passed between the front button and the fabric so that the front button and fabric are The sewn thread holder that can be held, and the sewn thread holder and the front button holder are moved away from the mounting plate, and the front button holder and the sewn thread holder are placed in the vertical or substantially vertical posture at the separated position. And reversely turn the button button and sewing thread holder after reversing on the mounting plate, and the button sewing position by reversing the buttons to the vertical or substantially vertical position. A cloth end folding means for folding the cloth end hanging downward from the front button side when returning the cloth end hanging downward from the front button side. Button sewing machine to the butterflies.   The root winding sewing switching mechanism is configured to move the sewing thread holder and the front button holder forward from the placement plate toward the sewing work position in a substantially horizontal direction and to reverse the sewing work position from the sewing work position to the sewing work position. The table button holder and the sewing thread holder after being inverted are moved back from the upper position of the sewing work position to the upper position of the above-mentioned mounting plate substantially horizontally and then moved from the position to the mounting plate. The buttoned sewing machine according to claim 4, wherein the sewing machine is configured to move downward.   The cloth edge folding means contacts the cloth edge with the placing plate when the table button holder and the sewing thread holder after reversing are moved back from the upper position of the sewing work position to the upper position of the placing plate substantially horizontally. 6. The button-attached sewing machine according to claim 5, wherein the sewing machine is a means for folding the fabric end portion to the side opposite to the front button side.   The root winding sewing switching mechanism moves the sewing thread holder and the front button holder upward from the mounting plate to the upper position of the mounting plate and reverses them, and then from the upper position of the mounting plate to the upper position of the mounting plate. 5. The buttoned sewing machine according to claim 4, wherein the sewing machine is configured to move downward.   The cloth edge folding means displays the cloth edge hanging downward from the button sewing position before the table button holder and sewing thread holder after reversing are moved downward from the upper position of the placing board onto the placing board. 8. The button-attached sewing machine according to claim 7, wherein the button-attached sewing machine is a means that is pushed into the opposite side of the button and folded.

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