KR101482717B1 - Button sewing machine - Google Patents

Abstract

The present invention provides a button-sewing machine capable of supplying buttons more efficiently.

The button sewing machine comprises a sewing operation part for sewing and sewing the sewing material while keeping the button at the seizing foot, a button feeding means for feeding the button to the button sewing foot, The button supply means has a button carrier portion for supporting the button from below, and is characterized in that the button is carried on a button catching foot after the button is placed on the button carrier portion .

Description

Button sewing machine {BUTTON SEWING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a button fastening sewing machine provided with a button supply device.

In a button sewing machine, a needle bar holding a sewing needle is moved up and down with respect to a button hole of a button which is held almost horizontally on a button catching foot located on the upper side of the picking material, thereby attaching a button to the picking material. At this time, there is known a button feeding device having a carrier mechanism for supplying a button to a button capturing foot every time the button is sewn and attached (for example, Patent Document 1).

As shown in Fig. 10, the button catching foot 101 is provided with claw portions 101a and 101a to be held in engagement with the button B1 in order to prevent the button B1 from falling off. The prior art carrier mechanism has a button carrier portion 102 and the button B1 is supported at the tip end portion of the button carrier portion 102. [ The button carrier portion 102 is moved to rotate the tip portion with the shaft portion 102b as a rotation axis so that the button B1 is fitted between the claw portions 101a and 101a. As shown in Fig. 11A, the button carrier portion 102 has a plurality of pins 102a corresponding to the button hole positions of the button B1 and the interval between the button holes. The button carrier portion 102 contacts the bottom portion of the button B1 and supports the button B1 by inserting a plurality of pins 102a upward from below the button hole of the button B1. The length of the pin 102a is larger than the thickness of the button B1. That is, the tip of the pin 102a protrudes from the tip of the buttonhole. Therefore, the button B1 is not easily detached from the button carrier portion 102, and the button B1 is more reliably supported.

11 (b), when the button B1 is fitted to the claw portions 101a, 101a of the button catching foot 101, the button catching foot 101 is pressed against the button carrier portion 102). As a result, the button hole of the button B1 is disengaged from the pin 102a of the button carrier portion 102. Thereafter, the tip end portion of the button carrier portion 102 pivots away from the claw portions 101a, 101a of the button catching foot 101. [ Then, the button catching foot 101 moves downward to bring the button B1 close to the picking. Thereafter, the sewing needle falls into the buttonhole of the button B1, and needle sweat is formed, so that the button B1 is stitched to the picked-up article.

[Patent Document 1] Japanese Patent Application Laid-Open No. H5 (1993) -84367

However, in the button supply apparatus having the carrier mechanism of the prior art, in order to solve the insertion of the pin 102a of the button carrier portion 102 into the button hole of the button B1, the button catching foot 101 It is necessary to move the button carrier part 102 upward and then lower the button catcher foot 101 again. Therefore, there is a problem that the cycle time required for sewing and attaching the button B1 is unnecessarily long as long as the button catching foot 101 is moved up and down.

It is also necessary to prepare the button carrier portion 102 provided with the pin 102a corresponding to the button hole position, space and button hole size of the button B1 for each type of button, . Moreover, since it is necessary to replace the button carrier portion 102 every time the type of the button is changed, the replacement work is very troublesome, and the time spent in the replacement work is significantly reduced .

When the thick button is stitched and attached, the length of the pin 102a of the button carrier portion 102 becomes longer corresponding to the thickness of the button. Therefore, the button catching foot 101 has the button carrier portion It is necessary to move the pin 102a more upwardly in order to eliminate the insertion of the pin 102a. At this time, if the upward movement of the button catching foot 101 is too great, there is a possibility that the button and the sewing needle located above the button catching foot 101 come into contact or collide with each other. Therefore, there is a limit to the upward movement range of the button catching foot 101. That is, when the thickness of the button becomes equal to or more than a certain level, the button catching foot 101 can not pull the button from the pin 102a of the button carrier portion 102. [ That is, in the conventional button supply device, there is a problem that the button having a thickness equal to or more than a certain thickness can not be supplied.

It is also possible to consider a method of eliminating the insertion of the pin 102a of the button carrier portion 102 into the button hole of the button B1 by moving the button carrier portion 102 downward. However, when the button carrier portion 102 moves downward, the range of movement of the button carrier portion 102 downward is limited because the button carrier portion 102 collides with the picked-up portion. Thereby, even if the button carrier portion 102 is moved downward, there is a problem that it is difficult to supply the thick button.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a button sewing machine provided with a button feeding device of a sewing machine which can supply buttons more efficiently.

According to a first aspect of the present invention, there is provided a button mounting sewing machine comprising a sewing operation portion having a button catching foot and sewing and attaching the button to the sewing material while holding the button with a button catching foot, and a button feeding means for feeding the button to the button catching foot And a button hole position adjusting means for determining a position of the button to correspond to a direction at the time of sewing and attaching the button, wherein the button supplying means has a button carrier portion for supporting the button from below, And then carried by the button catching foot.

According to a second aspect of the present invention, in the buttoning sewing machine of the first aspect, the button supplying means includes a fixed arm portion having one end for supporting the button carrier portion, And a driving portion for rotating the fixed arm portion and the up-and-down moving arm portion in the horizontal direction, characterized by having a clamp portion for holding the button in cooperation with the clamp portion, a vertical moving arm portion for vertically moving with one end supporting the clamp portion, .

According to a third aspect of the present invention, in the button fastening sewing machine of the second aspect, the distal end portions of the stationary arm portion and the up and down moving arm portions carry the button with the button catching foot so that the button supplying means does not contact the button catching foot A part or the whole of the fixed arm portion and the up-and-down moving arm portion is bent or curved so as to face the moving direction of the fixed arm portion and the up-and-down moving arm portion.

According to a fourth aspect of the present invention, in the button fastening sewing machine according to the second or third aspect, the button carrier portion is provided with a suction portion for sucking air, and the button is held by the suction force of the suction portion.

The invention according to claim 5 is the sewing machine for button fastening according to claim 4, further comprising: a first seal for blocking a gap between the button carrier portion and the button; and a second seal for blocking a gap between the clamp portion and the button .

According to a sixth aspect of the present invention, in the button fastening sewing machine according to any one of the first to fifth aspects, the buttonhole position adjusting means includes direction detecting means for detecting a button direction around an axis passing through the center of the button, Angle control means for driving the driving source of the angle adjusting mechanism so as to correspond to a predetermined direction in the operation of sewing and attaching the buttons in accordance with the direction of the button detected by the direction detecting means .

According to a seventh aspect of the invention, there is provided a button fastening sewing machine as set forth in any one of the first to sixth aspects, wherein the buttonhole position adjusting means includes a buttonhole position adjusting means for adjusting the position of the buttonhole from the predetermined position at the time of sewing and attaching the button And a position control means for driving the driving source of the position adjusting mechanism in accordance with the positional deviation of the button detected by the position detecting means.

According to an eighth aspect of the present invention, in the button fastening sewing machine of any one of the first to third aspects, the button supply means includes a suction portion for sucking air from below the button carrier portion, The button is held on the button carrier portion, and then the button is carried by the button catching foot.

According to the invention as set forth in claim 1, the button supply means carries the button by catching the button after grasping the button from the up and down directions. Further, the button is positioned so as to correspond to the direction in the operation of sewing and attaching the button by the button hole position adjusting means. Accordingly, it is not necessary to provide a pin to be inserted into the button hole of the button on the button feeding means, and the button feeding means carries the button with the button catching foot and then releases the gripping of the button so that the button is handed to the button catching foot. As a result, there is no need to move the button foot upward and downward, and it is possible to solve the problem that the cycle time required for sewing and attaching the buttons is unnecessarily long as long as the button squeezing feet move up and down. .

Further, as described above, since the button supplying means grasps and conveys the button, it is possible to support the button without depending on the position or the interval of the buttonhole of the button or the size of the buttonhole. As a result, in the prior art, it is necessary to prepare button carrier units each having a pin corresponding to the position, spacing and size of the buttonhole of the buttonhole for each type of button, Thus, the cost of the button feeder of the sewing machine is greatly reduced. In addition, since it is necessary to replace the button carrier part every time the type of the button is changed in the prior art, the replacement work is very troublesome, and the time spent in the replacement work is considerably deteriorated The productivity of the sewing machine can be further improved.

In addition, as described above, the button capturing foot need not be moved up and down. As a result, since the button may come into contact with or collide with the sewing needle when the button catching foot moves greatly upward to pull the thick button from the button carrier portion as in the prior art, It is possible to solve the problem that it can not be supplied by the supplying device. As a result, it is possible to provide a button feeding device for a sewing machine capable of feeding a button to the button catching foot without being influenced by the thickness of the button, thereby greatly improving the availability and reliability of the sewing machine.

Further, the position of the button is determined so that the buttonhole position adjusting means corresponds to the direction at the time of sewing and attaching the button. That is, the direction of the buttonhole of the button is adjusted by the buttonhole position adjusting means so as to correspond to the needle drop of the sewing needle when the button is sewn and attached. Thus, the button retained on the button capturing foot can be sewn more smoothly. As a result, the productivity of the sewing machine is further improved. In addition, when the button is sewn and attached, the sewing needle at the time of needle dropping does not collide with the button, and the reliability of the sewing machine is further improved.

The positioning of the button by the button hole position adjusting means can be performed either before or after the button is supplied to the button catching foot by the button supplying means. When the direction of the button is changed, the position is determined in consideration of this.

According to the invention as set forth in claim 2, since the clamp arm is moved up and down by moving the up and down arm portions upward and downward, the button is gripped by lowering the clamp arm from the upper side of the button supported from below. That is, the button carrier portion and the fixed arm portion do not need to be moved up and down. Thus, the driving portion for gripping the button can be simplified. In addition, since the button carrier portion does not move up and down, the button supported by the button carrier portion is reliably supported without being subjected to vibration or inclination due to up and down movement.

According to the invention as set forth in claim 3, since the fixed arm portion and the upper and lower movable arm portions are bent or curved in a part or all of the fixed arm portion and the up and down moving arm portion so as to face the moving direction when the button is carried by the button, The button supply means and the button capture foot are not in contact with each other. Therefore, the horizontal rotation of the fixed arm portion and the vertical moving arm portion by the driving portion prevents the button supply means from contacting the button catching foot and inhibiting the supply of the buttons.

According to the invention as set forth in claim 4, the button carrier portion has a suction portion for sucking air, and the button is held by the suction force of the suction portion. Thus, the button is held by the button feeding means more reliably.

Further, as described above, since the button is held by the suction force of the suction portion, the button can be held regardless of the position or the interval of the buttonhole of the button or the size of the buttonhole. As a result, in the prior art, it is necessary to prepare button carrier units each having a pin corresponding to the position, spacing and size of the buttonhole of the buttonhole for each type of button, Thus, the cost of the button feeder of the sewing machine is greatly reduced. In addition, since it is necessary to replace the button carrier part every time the type of the button is changed in the prior art, the replacement work is very troublesome, and the time spent in the replacement work is considerably deteriorated The productivity of the sewing machine can be further improved.

According to the invention as set forth in claim 5, the first seal prevents a gap between the button carrier portion and the button, and the second seal prevents a gap between the clamp portion and the button. Accordingly, the button carrier is hermetically sealed between the button carrier portion and the clamp portion with the button interposed therebetween, and the holding force of the button by the suction force of the suction portion is greatly strengthened, so that the button is more reliably held by the button carrier portion and the clamp portion.

According to the sixth aspect of the present invention, when the direction around the center line is detected by the direction detecting means with respect to the button and the direction corresponding to the predetermined direction at the time of sewing and attaching the buttons is different from the detected direction, So that the direction of the button can be adjusted by moving the button. Therefore, it is possible to further optimize the button direction at the time of sewing, to enable good button sewing, to improve reliability and reliability in sewing, to shorten the time required for orientation confirmation and direction adjustment work, The improvement can be achieved.

According to the invention as set forth in claim 7, when a positional deviation with respect to a predetermined position at the time of work for sewing and attaching the button by the position detecting means to the button is detected, the position of the button can be adjusted by driving the driving source of the position adjusting mechanism . Therefore, it is possible to further optimize the button position at the time of sewing, to enable good button sewing, to improve reliability and reliability in sewing, to shorten the time required for position confirmation and position adjustment work, The improvement can be achieved.

(Entire Configuration of the Invention)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1, a button sewing machine 1 (hereinafter referred to as a sewing machine 1) includes a button feeding device 2, a sewing operation portion 40, a control device (not shown) for controlling each portion of the sewing machine 1 A pedal (not shown) to which an operation instruction of the sewing machine 1 is input by an operator, and an operation panel (not shown) for performing various settings of the sewing machine 1. The sewing operation portion 4 is provided with a button catching foot 41 for holding the button B at the upper side of the pick material and the button B held by the button catching foot 41 is stitched do. The button supply device 2 feeds one button B to the button catching foot 41.

The button supply device 2 includes a button feeder 10 and a button hole position adjusting part 20 for adjusting the position and direction of the button hole of the button B sent one by one from the button feeder 10 And a button conveying unit (not shown) for conveying the next button B whose position and direction has been adjusted by the button hole position adjusting unit 20 to the button catching foot 41 of the sewing operation unit 40 (Button supplying means 30).

The button feeder 10 is provided with a button replenishing tray 11 serving as a tray when a button B is loaded by an operator and a feeder receiving a button B sent from the button replenishing tray 11 one by one And a rotary plate 13 for transmitting the buttons B sent from the dispensing unit 12 to the button hole position adjusting unit 20 one by one.

As shown in Fig. 2, a spiral-shaped button path is formed in an inner circumferential portion of the button replenishment tray 11. As shown in Fig. The button path is formed so as to be a slope of an upward gradient as it is directed toward the outside. When the button feeder 10 is operated, the button feeding tray 11 vibrates, and the button B, which is supplied to the button feeding tray 11, is guided outward by the bottom of the helical button path. A delivery port 11a is formed in the outer peripheral portion of the button replenishing tray 11 on the side where the delivery portion 12 is installed. The button B is guided to the outer peripheral portion and is sent from the delivery port 11a to the hole portion 12b of the delivery portion 12. [

The dispensing section 12 includes a rotation section 12c that rotates around the shaft section 12a and moves the button B in the hole section 12b and a rotation section 12c fixed to the frame of the sewing machine 1, And a fixing portion 12d which is a bottom portion of the fixing portion 12d. The button B sent from the delivery port 11a of the button replenishing tray 11 enters the hole portion 12b of the delivery portion 12. [ The hole portion 12b is formed so as to pass through the rotation portion 12c. The lower surface of the rotating portion 12c and the upper surface of the fixing portion 12d are provided so as to slide. That is, the upper surface of the fixing portion 12d functions as the bottom surface of the hole portion 12b of the rotation portion 12c to support the button B. The button B is engaged with the side portion of the hole portion 12b and the position of the button B is changed along with the change of the position of the hole portion 12b in accordance with the rotation of the rotation portion 12c, Lt; / RTI >

A delivery port 12e is provided at a position opposite to the delivery port 11a of the button replenishing tray 11 with respect to the shaft portion 12a and overlapping with the movement path of the hole portion 12b due to the rotation of the rotation portion 12c, Respectively. The button B moved to the upper side of the delivery port 12e in accordance with the rotation of the rotation portion 12c drops downward from the delivery port 12e and is sent to the hole portion 13b of the rotary plate 13. [

The rotary plate 13 includes a rotary portion 13c that rotates about a shaft portion 13a and moves a button B in the hole portion 13b, a hole portion 13b that is fixed to the frame of the sewing machine 1, And a fixing portion 13d which is a bottom portion of the fixing portion 13d. The hole portion 13b is formed so as to pass through the rotation portion 13c. The lower surface of the rotating portion 13c and the upper surface of the fixing portion 13d are provided so as to slide. That is, the upper surface of the fixing portion 13d functions as the bottom surface of the hole portion 13b of the rotation portion 13c. The rotary plate 13 is provided so that a part of the rotary plate 13 does not overlap with the delivery portion 12 from below. The movement path of the hole portion 13b which moves in accordance with the rotation of the rotation portion 13c is provided so as to pass under the delivery port 12e of the delivery portion 12. [ The button B dropped from the delivery port 12e of the delivery portion 12 falls to the hole portion 13b of the rotary plate 13 and the hole 13b of the hole portion 13b The button B moves according to the change of the position.

A delivery port 13e is formed at a position opposite to the delivery port 12e of the delivery section 12 with respect to the shaft section 13a and at a position overlapping with the movement path of the hole section 13b. The button B moved to the upper side of the delivery port 13e in accordance with the rotation of the rotation part 13c drops downward from the delivery port 13e and is transmitted to the button hole position adjustment part 20. [ That is, the " delivery position " is the position where the delivery port 13e is formed.

In addition, the operation of the button feeder 10 is controlled by the control device of the sewing machine 1.

(Button hole position adjustment section)

Next, the structure in which the position and direction of the buttonhole of the button B is adjusted by the buttonhole position adjusting unit 20 according to Figs. 3 to 5 will be described in detail. Fig. In the description of the button-hole position adjusting section 20, the longitudinal direction of a linear motion shaft 138 which is disposed horizontally and which gives rectilinear motion to the button catching arms 21 and 22 to be described later is Y Axis direction, a horizontal direction, a direction orthogonal to the Y-axis direction as an X-axis direction, and a vertical vertical direction as a Z-axis direction.

The sewing operation portion 40 vibrates the needle to stitch the button B to attach. The buttonhole position adjusting unit 20 previously adjusts the direction of the button B so that the arrangement direction of the buttonhole and the needle vibrating direction coincide when the button B is conveyed to the button catching foot 41 . The button conveying section 30 changes the direction of the button B by 90 degrees when the button B is conveyed from the button hole position adjusting section 20 to the button catching foot 41. Therefore, the buttonhole position adjusting section 20 adjusts the direction of the button B in the direction in which the change of 90 degrees is considered.

The buttonhole position adjusting section 20 includes a pair of button capturing arms 21 and 22 and a camera 23 for confirming the position and direction of the buttonhole of the button B and the button catching arms 21 and 22 A position adjusting mechanism 130 for moving the light source to an arbitrary position in the XY plane, and an angle adjusting mechanism 110 for adjusting the direction (rotation angle) of the button.

The button capturing arms 21 and 22 are formed symmetrically with respect to each other. Each of the base end portions of the button capturing arms 21 and 22 is rotatably supported by the position adjusting mechanism 130 so as to be rotatable about the vertically oriented stepped screws 28 and 29 And is supported by a female mounting base 131 of a female connector. Mounting portions 21a and 22a for accommodating the vicinity of the outer peripheral portion of the lower surface of the button B are formed on the pivotal end sides of the button capturing arms 21 and 22, respectively.

4, each of the button capturing arms 21, 22 has boss-shaped protruding portions 21b, 22b on the lower side thereof. These projecting portions 21b and 22b are provided with a pinching spring 25 for pressing the projecting portions 21b and 22b in a direction in which the rotational end portions of the button capturing arms 21 and 22 approach each other. As a result, each of the button capturing arms 21 and 22 is moved toward and away from each other on the side of the pivotal end holding the button, and can hold the button through the button holding members 111 and 112 described later.

On the upper surface of one button capturing arm 22, a solenoid 26 serving as a driving source for releasing the holding of the button is provided. The solenoid 26 is provided with a plunger that protrudes and retracts toward the other button capturing arm 21. On the upper surface of the other button capturing arm 21, there is provided a receiving member 27 to which the plunger of the solenoid 26 comes into contact when projecting. By operating the solenoid 26, the plunger presses the receiving member 27 and presses the pivoting end side of each button capturing arm 21, 22 against the pinching spring 25, So that the state can be released.

3, the angle adjusting mechanism 110 includes holding members 111 and 112 provided on the upper surfaces of the rotating ends of the button capturing arms 21 and 22 and a holding member 111 A main pulley 115 attached to an output shaft of each of the rotation angle adjusting motors 113 and 114 and a button pickup arm 21 and 22 A driven pulley 117 having a rack member 116 interlocked with each of the holding members 111 and 112 and a pinion portion 117a engaged with the rack member 116 at the lower side of the main pulley 115, And a timing belt 118 for interlocking rotation of the driven pulley 117 and the driven pulley 117.

The main pulley 115, the rack member 116, and the timing belt on the side of the holding member 112 are not shown in the figure, but the main pulley, the rack member, the driven pulley, This is because the structure is the same as that of the driven pulley 117 and the timing belt 118.

Each of the holding members 111 and 112 is formed in an arc shape when viewed in a plan view and is arranged so as to oppose the curved inner side surfaces of the holding members 111 and 112 and is held in contact with the outer periphery of the button B do.

The rack member 116 provided on the side of the holding member 112 is disposed below the button capturing arm 22 and is formed into an arc shape having substantially the same shape as the holding member 112 when viewed from the plane. On the upper surface of the rack member 116, there is formed a long convex portion 116a of a rail shape having an arc shape when viewed in plan view. On the other hand, an arc-shaped guide hole 22c passing through the upper and lower surfaces of the button catching arm 22 is formed adjacent to the placement section 22a at the rotation end of the button capture arm 22. [ An elongated convex portion 116a of the rack member 116 is inserted into the guide hole 22c from below. The rack member 116 and the holding member 112 are aligned in the direction in which the upper end surface of the elongated convex portion 116a inserted in the guide hole 22c is in close contact with the lower surface of the holding member 112, Lt; / RTI > The elongated convex portion 116a is formed to be narrower in width than the main body portion (a portion other than the long convex portion 116a) of the rack member 116 and the holding member 112. [ The guide hole 22c is formed in the same arc shape as the elongated convex portion 116a and longer than the elongated convex portion 116a. The elongated convex portion 116a is retained in the guide hole 22c so as not to be vertically separated by the main body portion of the rack member 116 and the retaining member 112 while being guided along the guide hole 22c So that it can move while drawing the trajectory of the arc. With this structure, the inner surface of the holding member 22 moves along the arc.

A rack gear 116b is formed on a surface of the rack member 116 which is outside the arc. The rack gear 116b is engaged with the pinion portion 117a of the driven pulley 117.

The driven pulley 117 is supported on the lower surface of the button capturing arm 22 by a support shaft 117b directed upward and downward. The upper half portion of the driven pulley 117 is a pinion portion 117a, and the lower half portion is a pulley portion on which the timing belt 118 extends. The pinion portion 117a and the pulley portion are concentric, and the center of the pinion portion 117a is supported by the support shaft 117b.

Gear teeth are formed on the outer peripheral surface of the driven pulley 115 and the outer peripheral surface of the pulley portion of the driven pulley 117. [ A timing belt 118 is provided on the pulley portion of the driven pulley 115 and the driven pulley 117. Teams are formed on the inside of the timing belt 118 so that the teeth of the timing belt 118 and the teeth of the main pulley 115 and the driven pulley 117 are engaged.

The angle adjustment of the button B by the angle adjusting mechanism 110 will be described. Each of the holding members 111 and 112 of the button capturing arms 21 and 22 is provided with a button B in a state of being in contact with both ends of the diameter of the outer circumference of the button B . Each of the holding members 111 and 112 moves along the arc by driving each of the rotation angle adjusting motors 113 and 114. [ At this time, each of the rotation angle adjusting motors 113 and 114 performs rotational driving in the same direction with the same amount of operation. Thus, when one holding member 111 moves forward (or backward) along an arc and the other holding member 112 moves rearward (or forward) along an arc, Clockwise (or clockwise) with the center line passing through the center vertically as an axis. Thus, the angle adjustment (direction adjustment) of the button B is performed. The circular arc of the inner surface of each of the holding members 111 and 112 is set to have the same radius and the center position of the circular arc of each inner surface is set to be the same as that of the fold And is positioned on a straight line that is substantially parallel to the moving direction of the contact. Therefore, the angle of the button B can be adjusted while the center position of the button B is maintained by the movement of the holding members 111 and 112 along the circular arc direction.

The position adjusting mechanism 130 includes an arm attachment base 131 for rotatably supporting the base ends of the respective button capturing arms 21 and 22 and upper and lower holding frames 132 and 133 for holding the arm attachment base 131 A conveying table 134 that supports the upper and lower retaining frames 132 and 133 so as to move the button capturing arms 21 and 22 in an arbitrary position in the XY plane so as to be movable and a conveying table 134 A Y-axis motor 136 serving as a movement driving source for the Y-axis direction of the button capturing arms 21 and 22 and a Y-axis motor 136 serving as a movement driving source for the Y- A pinion 137 disposed on the output shaft, a linear shaft 138 disposed along the Y axis direction and having a rack gear engaged with the pinion 137 along its longitudinal direction, A shaft holder 140 fixed to one end of the linear shaft 138 and a pair of slide guides 139 and 139 for movably supporting the shaft holder 140 in the Z Is provided on the passing line of the detecting piece 142 fixedly attached to the shaft holder 140 and is provided on the passing line of the detecting piece 142 An origin sensor 143 for detecting the origin position of the Y-axis motor 136 in accordance with the X-axis motor 136 and an X-axis motor 144 serving as a driving source for the rotation operation of the conveying table 134 about the Z- A pinion 145 provided on the output shaft of the X-axis motor 144, two arm portions 151 that are pivotally supported by the support shaft 146 so as to be rotatable around the Z axis, A transfer arm 147 having teeth formed to engage with the pinion 145 on one side of the transfer arm 147 and a transfer arm 147 which is supported on the other arm portion of the transfer arm 147 by a support shaft 148, A square fitting neck 149 which is inserted into the elongated hole 134a and which is engaged with the elongated hole 134a of the transfer arm 147, At the same time provided in accordance with the presence or absence of the detection piece 150 and a home position sensor 151 for detecting the home position of the X-axis motor 144.

The position adjusting mechanism 130 moves the button capturing arms 21 and 22 in the Y axis direction by driving the Y axis motor 136 and drives the feed belt 134 by the X axis motor 144 And rotates the button capturing arms 21 and 22 about the Z axis around the stepped screw 141 as a center. Namely, by cooperating with the Y-axis motor 136 and the X-axis motor 144, the rotational end side of the button capture arm 21, 22 can be moved to an arbitrary position in the X-Y plane for positioning.

As shown in Fig. 1, the camera 23 is fixedly provided by a support frame so that its position is not changed, and its optical axis (optical axis) is supported so as to be parallel to the Z-axis direction.

The button hole position adjusting section 20 is controlled by the control device of the sewing machine 1 at the time of supplying the button. That is, when the button is supplied, the solenoid 26 is controlled to be in the plunger protruding state, and when the button capturing arms 21 and 22 are separated from each other (button release state) At a position below the delivery port 13e of the rotary plate 13 of the rotary drum 13. When the button B dropped from the delivery port 13e is accommodated in the placement portions 21a and 22a, the solenoid 26 is controlled to be in the plunger retreat state, B are held together.

The photographing of the button B is carried out from above by the camera 23 and the position of the button B is detected from the position of each buttonhole or the position of the outer edge of the button by known image processing such as binarization The center position is obtained. Then, the detection center position is compared with a position suitable for delivery to the button return section 30, and the positional deviation is calculated. The button carrying section 30 carries out the operation of passing the button B to the button catching foot 41 while changing the direction only by the turning and carrying operation while maintaining the position where the button B is passed. Therefore, the " position suitable for delivery to the button conveying section 30 " indicates the position at which the button B is positioned at the time of the operation for sewing the button while the button B reaches the button catching foot 41. [ That is, the control device of the sewing machine for calculating the positional deviation from the camera 23 functions as " position detection means ".

Similarly, the position of each buttonhole is detected from the photographed image of the button B held by the respective button capturing arms 21, 22, and the direction (angle) with respect to the center of the button B is obtained. Then, the detection angle is compared with a direction (angle) suitable for transmission to the button conveyance section 30, and the angle deviation is calculated. Here, the "direction suitable for transmission to the button conveying section 30" is a direction in which the direction of the button B after conveyance by the button conveying section 30 is directed in the predetermined direction . That is, the control device of the sewing machine for calculating the angular deviation from the camera 23 functions as the " direction detecting means ".

Then, the controller of the sewing machine drives the X-axis motor 144 and the Y-axis motor 136 in accordance with the calculated positional deviation, and performs position correction control for correcting the position of the button B so that the positional deviation is eliminated . That is, the control device of the sewing machine functions as a " position control means ".

Further, the control device of the sewing machine drives the rotation angle adjusting motors 113 and 114 in the same direction and with the same operation amount in accordance with the calculated angle deviation, so that the direction of the button B (Angle) is corrected. That is, the control device of the sewing machine functions as "angle control means".

After this correction control, the controller of the sewing machine controls the solenoid 26 to release the button B by controlling the solenoid 26 to the plunger protruding state while passing the button B to the button conveying section 30, ) Is completed.

3, the bottom surface of the button B when the button B is held by the holding members 111 and 112 is pressed by the placing portions 21a and 22a to the button B, And the lower surface portion near the center of the button is exposed. Thus, the button carrier portion 31 can be brought into contact with the lower surface of the button B after the position and direction of the button hole is adjusted by the button hole position adjusting portion 20 from below.

(Button return section)

Next, the structure in which the button B is carried to the button catching foot 41 by the button return section 30 in Fig. 6 will be described in detail.

The button conveying section 30 includes a tray-shaped button carrier section 31 which contacts the bottom surface of the button B and supports the button B mounted thereon and a button carrier section 31, Shaped clamp part 32 which is in contact with the opposite side of the button carrier B, that is, the upper face part of the button B and which is operated to insert the button B by the button carrier part 31, And one end of which supports the clamp portion 32 and the other end of which is supported by the frame portion 36 so as to be rotatable by the frame portion 36, A vertical arm 34 for vertically movably supporting the clamping portion 32 so as to connect the fixed arm 33 and the vertical arm 34 to each other, An actuator 35 (for example, a solenoid or the like) that is driven to rotate in the vertical direction, and a frame (not shown) that supports the fixed arm 33 and the up and down moving arm 34 A rotary shaft 37 fixed to the frame portion 36 and a driving portion 38 for rotationally driving the rotary shaft 37 are provided. 6, one end of each of the fixed arm 33 and the up and down moving arm 34 is curved and the distal ends of the fixed arm 33 and the up and down moving arm 34 are connected to the driving unit 38, To the position Q from the position P of the fixed arm 33 and the up and down moving arm 34 due to the movement of the button B.

The actuator 35 has a mover 35a provided so as to be operable in the vertical direction and a stator 35b which drives the mover 35a to move the mover 35a up and down. The lower end of the stator 35b of the actuator 35 is connected to the fixed arm portion 33 and the upper end of the movable element 35a is connected to the up and down moving arm portion 34. [ The operation of the mover 35a by the stator 35b of the actuator 35 is controlled by the control device of the sewing machine 1. [

When the mover 35a of the actuator 35 is operated to contract downward, the other end of the vertical moving arm 34 rotates downward. That is, the clamp portion 32 moves downward. At this time, when the button B is on the button carrier portion 31, the clamp portion 32 comes into contact with the upper surface portion of the button B and presses the button B in the direction of the button carrier portion 31 do. That is, the button B is held by the clamp portion 32 and the button carrier portion 31 and held.

On the other hand, when the mover 35a of the actuator 35 is operated to extend upward, the other end of the vertical moving arm 34 rotates upward. That is, the clamp portion 32 moves upward. That is, as described above, since the clamp portion 32 is moved upward from the state in which the button B is held by the clamp portion 32 and the button carrier portion 31, It is resolved.

The operation amount of the actuator 35 and the turning operation angle of the up and down moving arm portion 34 are set such that the button B can be held and released by the clamping portion 32, And to be set to a minimum range required for disengagement.

The driving unit 38 is an actuator such as a motor that rotates the fixed arm 33 and the up and down moving arm 34 by rotationally driving the rotating shaft 37. [ That is, the button carrier portion 31 and the clamp portion 32 are moved in accordance with the rotation thereof, thereby moving the button B. At this time, the range of rotation of the fixed arm 33 and the up and down moving arm 34 by the driving unit 38 is determined by the inner and outer diameters of the upper and lower movable arms 34, (E.g., 90 degrees) of the smaller one of the inner angles? The drive of the driving unit 38 is controlled by the control unit of the sewing machine 1. [

That is, when the button carrier portion 31 is located below the button B held by the button hole position adjusting portion 20 at the position P, the movable member 35a of the actuator 35 is moved downward And the clamping portion 32 is moved downward and the button B is held by the clamping portion 32 and the button carrier portion 31 to be held. Thereafter, the driving portion 38 is driven to rotate the fixed arm portion 33 and the up and down moving arm portion 34 to the position Q. The button B is carried between the concave portions 41c and 41d provided at the distal ends of the claws 41a and 41b of the button catching foot 41. [

(Sewing operation part)

Next, the sewing operation section 40 will be described in detail.

The sewing operation portion 40 includes a button catching foot 41 for holding the button B at the upper side of the object to be sewn and a needle bar 42 for supporting the sewing needle and moving up and down, (Not shown) that cuts the thread after the sewing operation of the button B is finished, and a sewing operation unit 40 that supports the respective portions of the sewing operation unit 40 and operates the sewing operation unit 40 And a sewing machine frame 43 having therein various mechanisms (such as a main shaft, a sewing machine motor, and a swing mechanism of the needle bar 42).

The structure in which the needle bar 42 is moved up and down by the driving of the sewing machine motor to swing the needle bar stitches and the structure of thread cutting by the thread cutting mechanism is the same as the well known sewing machine, Is omitted. In addition, various operations of the sewing operation portion 40 are controlled by the control device of the sewing machine 1. [

In the sewing operation section 40, a button moving mechanism may be provided for moving the button catching foot 41 side without rocking the needle bar to position each buttonhole at the needle drop position. Alternatively, The position of the picked-up foot may also be moved to perform positioning with respect to each other.

The button catching feet 41 of the button sewing operation portion 40 are provided with the claws 41a and 41b for holding the button B from above the picked up item as shown in Figures 7A and 7B, . A concave portion 41c is formed on the side of the claw 41b of the claw 41a on the side of the claw 41b (inside of the claw 41a) And a concave portion 41d is formed in the side surface portion of the inner side. The button catching foot 41 is provided with an elastic mechanism (not shown) such as a spring for urging the claws 41a and 41b to move inward. Thus, the button (B) located between the concave portion 41c and the concave portion 41d is held by the claw 41a and the claw 41b. The button catching foot 41 is provided with a driving unit (not shown) for driving the distal ends of the claws 41a and 41b to rotate, and rotates the claw 41a and the claw 41b in directions away from each other So that it is possible to operate so as to eliminate the fitting to the button B.

The button side B of the claw 41a and the side side of the inner side of the claw 41b are pressed by the button B when the button B moves between the recesses 41c and 41d by the above- As shown in Fig. The claws 41a and 41b are urged inward by the elastic mechanism to insert the button B when the button B is accommodated between the recesses 41c and 41d. In this way, the button B is fitted and held in the concave portions 41c and 41d of the claws 41a and 41b. 7 (a), the button carrier 30 and the button catching foot 41 are not in contact with each other due to the distortion of the fixed arm 33 and the vertically moving arm 34. In this case, as shown in Fig.

Thereafter, the mover 35a of the actuator 35 is operated to extend upward so that the clamping portion 32 is moved upward, and the clamping portion 32 and the button carrier portion 31 press the button B The insertion is eliminated. Then, the driving unit 38 rotates the fixed arm 33 and the up and down moving arm 34 until the position P is reached.

As shown in Fig. 7 (b), the claws 41a and 41b are inclined obliquely toward the distal end portion. On the other hand, the fixed arm portion 33 and the up and down moving arm portion 34 are curved at their distal end sides so as to avoid the claws 41a and 41b. Thus, even when the fixed arm portion 33 and the up and down moving arm portion 34 pivot forward from the rear, the claws 41a and 41b and the fixed arm portion 33 and the up and down moving arm portions The button B can be supplied to the button catching foot 41 of the button returning section 30 without colliding with the button 34. [

(Operation of sewing machine)

Next, the operation of the sewing machine 1 will be described in detail.

First, the operation panel is operated by the operator to set the needle sweat according to the number and the interval of the button holes of the button (B). Thereafter, the button B is supplied to the button replenishing tray 11 of the button feeder 10 by the operator. Thereafter, when the pedal is set on the sewing operation portion 40 and the pedal is depressed once by the operator, the button B is moved from the button feeder 10 to the button hole position adjusting portion 20 one by one The position and direction of the buttonhole of the button B are adjusted by the buttonhole position adjusting unit 20 and the position and direction of the buttonhole are adjusted by the button returning unit 30 to the button catching foot 41 of the sewing operation unit 40 Button B is supplied. Thereafter, when the pedal is depressed again by the operator, the needle bar 42 of the sewing operation portion 40 is moved up and down and swings, so that the button B is stitched on the picked product, and when the operation of stitching and attaching the button B is finished The thread cutting mechanism of the sewing operation section 40 operates to cut the thread. Further, after the end of thread cutting, the claws 41a and 41b of the button catching foot 41 are operated to open outward, and the fitting of the button B to which sewing work has been completed is eliminated. Thereafter, the workpiece on which the work for sewing and attaching the button B is completed is separated by the operator.

Thereafter, when the button is stitched to continue, the operator performs the following operation, and the same operation as described above is performed.

(Function and effect of the button feeding device of the sewing machine according to the present invention)

The button carrier portion 31 releases the pushing of the button by the clamp portion 32 and the button carrier portion 31 after carrying the button B to the button catching foot 41. [ So that the button is passed to the button catching foot 41 even if the button catching foot 41 does not move up and down. This eliminates the need for the button catching foot 41 to move up and down and the cycle time required for the button catching foot 41 to stitch and attach the button B by the up and down movement operation time is unnecessarily long The productivity of the sewing machine can be greatly improved.

As described above, since the button B is held by the clamp portion 32 and the button carrier portion 31, the position of the button hole of the button B, or the size of the button hole, So that the button B can be supported. As a result, in the prior art, it is necessary to prepare button carrier units each having a pin corresponding to the position, spacing and size of the buttonhole of the buttonhole for each type of button, , The cost of the button feeder of the sewing machine is greatly reduced. In addition, since it is necessary to replace the button carrier part every time the type of the button is changed in the prior art, the replacement work is very troublesome, and the time spent in the replacement work is considerably deteriorated The productivity of the sewing machine can be further improved.

Further, as described above, the button catching foot 41 does not move up and down. It is sufficient that the button carrier portion 31 does not move up and down and the clamp portion 32 is also moved up and down in the minimum range in which the button B can be held and released. As a result, since the button is likely to come into contact with or collide with the sewing needle when the button catching foot moves greatly upward in order to pull the thick button from the button carrier portion as in the prior art, It is possible to solve the problem that it can not be supplied from the button supply device. As a result, it is possible to provide a button feeding device for a sewing machine that can supply a button to the button catching foot without being influenced by the thickness of the button, thereby greatly improving the availability and reliability of the sewing machine.

The button carrier portion 31 and the fixed arm portion 33 do not need to be moved up and down in order to grasp the button B because the up and down moving arm portion 34 moves up and down by moving the clamp portion upward and downward. Thus, the driving portion for gripping the button B can be simplified. In addition, since the button carrier portion 31 does not move up and down, the button B supported by the button carrier portion 31 is reliably supported without being subjected to vibration or inclination due to up and down movement.

The distal end portions of the fixed arm portion 33 and the vertically movable arm portion 34 are fixed to one end of the fixed arm portion 33 and the up and down moving arm portion 34 so as to face the moving direction when the button is carried to the button catching foot 40. [ The button supply means 30 and the button catching foot 41 are not in contact with each other. The button supply means 30 is brought into contact with the button catching foot 41 by the rotation of the fixed arm 33 and the up and down moving arm 34 by the driving unit 38 in the horizontal direction, The case where it is inhibited is eliminated.

In the button supply device 2, when the direction around the center line of the button is detected by the camera 23 and the detected direction differs from the direction corresponding to the predetermined direction at the time of sewing and attaching the button, The rotation angle adjusting motors 113 and 114 of the adjustment mechanism 110 are driven to rotate the button B to adjust the direction. Therefore, it is possible to further optimize the direction of the button B at the time of sewing, to enable good button sewing (sewing), to improve the reliability and reliability in sewing, It is possible to shorten the time required to improve the working efficiency.

Similarly, the positional deviation of the button B with respect to the predetermined position is detected during the operation of sewing the button by the camera 23, and the X-axis and Y-axis motors 144 and 136 of the position adjusting mechanism 130 So that the position of the button B can be adjusted by moving the button B. Therefore, it is possible to further optimize the position of the button B at the time of sewing, to enable good button sealing, to improve reliability and reliability in sewing, and to shorten the time required for position confirmation and position adjustment So that the working efficiency can be improved.

(Second Embodiment)

Next, the second embodiment, which is different from the above-described embodiment, will be described in detail. The same reference numerals are assigned to the same components as those in the above-described embodiment, and a detailed description thereof will be omitted. The button feeder 10, the buttonhole position adjusting unit 20 and the sewing operation unit 40 are the same as those in the above-described embodiment.

8 and 9, the button conveyance section 30A of the second embodiment has an intake port 51 at a substantially central portion of an upper surface portion thereof and an intake port 51 at an upper surface portion thereof. Shaped button carrier portion 31A provided with a circular first seal 52 surrounding the second seal 53 and a dish-shaped clamp portion 32A provided with a second seal 53 on the bottom portion, and a suction port 51 A vertical arm portion 34A capable of pivoting in the vertical direction while supporting the clamp portion 32A and a fixed arm portion 33A having a ventilation path 33Aa communicating with the fixed arm portion 33A and the vertical movement arm portion 33A, An actuator 35 for vertically moving the upper and lower moving arm portions 34A by connecting the upper and lower moving arm portions 34A and 34A and a frame portion 36 A rotary shaft 37, and a drive unit 38. [0031] The actuator 35, the frame portion 36, the rotating shaft 37, and the driving portion 38 are the same as those in the above-described embodiment.

The button carrier portion 31A is formed with an air intake port 51 and is connected to a ventilation path 33Aa provided in the fixed arm portion 33A and a suction force generating portion (not shown) such as a pump through the intake pipe 54. [ That is, when the suction force generating section operates to suck the air, air is sucked from the suction port 51, suction force is generated, and the button B is pulled and held. A first seal 52 is provided on the upper surface portion of the button carrier portion 31A so as to surround the air inlet 51. The first seal 52 is made of an elastic member such as rubber or the like so that when the first seal 52 is in contact with the upper surface portion of the button B as shown in Fig. So as not to leak. The first seal 52 and the button carrier portion 31A are in close contact with each other to prevent air from leaking between the first seal 52 and the button carrier portion 31A.

A circular second seal 53 having a diameter substantially equal to that of the first seal 52 is provided on the lower surface of the clamp portion 32A. The second seal 53 is made of an elastic member such as rubber as in the case of the first seal 52. When the second seal 53 is in contact with the upper surface portion of the button B as shown in Fig. So that air does not leak from between the buttons (B). The second seal 53 and the clamping portion 32A are in close contact with each other so that no air leaks from between the second seal 53 and the clamping portion 32A. The structure in which the fixed arm portion 33A is rotated in the vertical direction by the expansion and contraction of the actuator 35 under the mover 35a and the clamp portion 32A is moved up and down, Since the structure is the same as that of the carry section 30, detailed description is omitted. That is, by the operation of the actuator 35, the clamping portion 32A presses the button B against the button B from the opposite side of the button carrier portion 31A to the inlet port 51 of the button carrier portion 31A . The pressing of the button B to the button carrier portion 31A by the clamping portion 32A by the driving of the actuator 35 causes the button B to be pushed by the clamping portion 32A, The first seal portion 52 is in close contact with the bottom portion of the button B while the second seal 53 is in close contact with the upper surface portion of the button B without being strong enough to grip with the carrier portion 31A . The lifting of the clamping portion 32A by the driving of the actuator 35 may be carried out only to the extent that the second seal portion 53 can relieve the contact with the upper surface portion of the button B. That is, the driving of the actuator 35 is also controlled in response to the pressing force of the above-described clamping portion 32A against the button B.

9, when the button carrier portion 31A and the clamp portion 32A make the positional relationship in which the button B is sandwiched, the button carrier portion 31A, the first seal 52 ), The clamping portion 32A and the second seal 53 create a sealed space with the buttonhole of the button B interposed therebetween. At this time, only the suction port 51 can enter and exit the air in the closed space. That is, when the suction force generating section operates in a state where the closed space is formed, suction force is generated by sucking air from the suction port 51. At this time, air leakage is prevented by the first seal 52 and the second seal 53, so that the decrease of the suction force due to the inflow of air through the button hole from the upper surface side of the button B is effectively prevented, A very strong suction force acts on the button B and the clamping portion 32A. Thus, the button carrying section 30A can hold the button B with a stronger holding force. It is preferable that the first seal 52 and the second seal 53 are set to an inner diameter that can surround the entire buttonhole when the interval of the buttonhole is conventional. The button conveying section 30A carries the button B with the button catching foot 41 while holding the button B in this way. Thus, the suction port 51 functions as a "suction portion". The structure in which the driving section 38 rotates the fixed arm section 33A and the up and down moving arm section 34A through the rotary shaft 37 and conveys the button B to the button catching foot 41 is described in the above- The detailed description of the button transporting unit 30 will be omitted.

When the suction force from the suction port 51 is sufficiently generated, the clamp portion 32A and the second seal 53 are not provided and the suction port of the button carrier portion 31A provided with the first seal 52 51 may cause the button B to be pulled and held by generating suction force. At this time, when the button carrier portion 31A releases the retaining force with respect to the button B, the attraction force generating portion is stopped by stopping the generation of the suction force from the suction port 51 as the operation is stopped. In this case, since the operation of moving the clamping portion 32A up and down becomes unnecessary, the cycle time required for supplying the button can be further shortened only by the time required for the clamping portion 32A to move up and down.

(Function and effect of the button feeding device of the sewing machine according to the second embodiment)

According to the second embodiment, in addition to the effect of the first embodiment, the button carrier portion 31A holds the button B by the suction force of the suction portion 51. [ Thus, the button B is held by the button feeding means 30A more reliably.

As described above, since the button B is held by the suction force of the suction portion 51, the position of the button B can be changed without depending on the position or the interval of the buttonhole of the button B or the size of the buttonhole. . As a result, in the prior art, it is necessary to prepare button carrier units each having a pin corresponding to the position, spacing and size of the buttonhole of the buttonhole for each type of button, Thus, the cost of the button feeder of the sewing machine is greatly reduced. In addition, since it is necessary to replace the button carrier part every time the type of the button is changed in the prior art, the replacement work is very troublesome, and the time spent in the replacement work is considerably deteriorated The productivity of the sewing machine can be further improved.

The first seal 52 prevents a gap between the button carrier portion 31A and the button B and the second seal 53 prevents a gap between the clamp portion 32A and the button B Lt; / RTI > As a result, the space between the button carrier portion 31A and the clamp portion 32A is sealed with the button B therebetween, and the holding force of the button B by the suction force of the suction portion 51 is greatly increased, B are more reliably held by the button carrier portion and the clamp portion.

(Etc)

Although the button carrier portions 31 and 31A are fixedly held by the fixed arm portions 33 and 33A in the foregoing embodiments and the second embodiment, the button carrier portions 31 and 31A may be provided so as to be movable up and down with respect to the button B .

Further, another method may be used for supplying the button B to the button hole position adjusting section 20 by the button feeder 10. [ For example, the button may be manually supplied to the button capturing arms 21 and 22 of the buttonhole position adjusting unit 20. [

In addition, the curvature of the fixed arm portion and the vertically movable arm portion is not limited to the curvature at one end as in the above-described embodiment, and the distal end portion of the fixed arm portion and the vertically movable arm portion may be inclined with respect to the button A part or all of the fixed arm portion and the up and down moving arm portion may be bent or curved so as to face the moving direction when carrying the button.

The rotating range of the fixed arm 33 (33A) and the up and down moving arm 34 (34A) by the driving unit 38 is not limited to the range of the angle?. For example, the angular range formed between the position P and the position Q, which is a diagonal angle of the angle?, May be larger. At this time, since the claws 41a and 41b of the button catching foot 41 do not need to be avoided, the fixed arm 33 (33A) and the up and down moving arm 34 (34A) It is not necessary to form curves.

In the above-described embodiment, the button adjusting mechanism 110 and the position adjusting mechanism 130 are disposed directly in front of the button conveying portion 30. In regard to the angle adjustment, when the button is sewn and finally attached But the position adjustment may be newly caused with respect to the positionally adjusted button B when the button is held on the button catching foot 41 after the adjustment, There is a possibility.

Therefore, the angle adjusting mechanism 110 and the position adjusting mechanism 130 may be mounted on the position, for example, the button catching foot 41, which is executed in the process after the transfer of the button returning section 30.

More specifically, a holding member of an angle adjusting mechanism, a rotation angle adjusting motor, an angle of rotation adjusting motor, a moving pulley, a rack member, a follower pulley, and a timing belt are provided on each of the bifurcated extended portions of the tip end portion of the button catching foot 41 And the button B held by each holding member of the button catching foot 41 may be rotatable.

A structure of a Y-axis motor, a pinion, a linear shaft, a shaft holder, and the like for attaching the button capturing arm 41 to the conveying table of the position adjusting mechanism and imparting a linear motion to the conveying table, The button holding position of the button catching foot 41 may be positionable at an arbitrary position on the horizontal plane by a configuration such as an X-axis motor, a pinion, a transfer arm, a square fitting neck or the like.

The angle adjustment mechanism and the position adjustment mechanism may be subjected to correction control based on the image captured in the arrangement of the camera 23 described above. The camera is disposed at the button holding position of the button capture leg 41 , It is more preferable to perform the correction control based on the shooting data here. In this case, it is preferable to perform photographing from the same axis as the needle bar. However, interference with the needle bar is caused, so that the needle bar is as close as possible to the same axis of the needle bar while avoiding this, It is more preferable to dispose the camera.

As a result, it is possible to further optimize the direction of the button B at the time of sewing and to optimize the position of the button B, thereby making it possible to achieve better button sewing and further improve the reliability and reliability in sewing, It is possible to shorten the time required for the confirmation and adjustment of the workpiece, thereby further improving the working efficiency.

1 is a perspective view showing a configuration of a sewing machine provided with a button feeding device according to the present invention.

Fig. 2 is an explanatory view showing the positional relationship between each part of the button feeder, the button catching arm of the button-hole position adjusting part, the button returning part, and the button catching foot.

3 is a perspective view of the button hole position adjusting portion.

4 is a plan view of the button hole position adjusting portion.

5 is an exploded perspective view showing the position adjusting mechanism of the button hole position adjusting portion.

Fig. 6 is an exploded perspective view showing the configuration of the button return section. Fig.

Fig. 7 is an explanatory view showing the configuration of the button catching foot, wherein (a) is a top view of the button catching foot, and (b) is a side view when the button catching foot is viewed from the side where the button conveying unit is installed.

Fig. 8 is an exploded perspective view showing a part of the configuration of the button carrying section according to the second embodiment. Fig.

Fig. 9 is a cross-sectional view showing a part of the configuration of the button carrying section according to the second embodiment. Fig.

Fig. 10 is an explanatory view showing a configuration of a carrier mechanism according to the prior art.

Fig. 11 is an explanatory view of a conventional carrier mechanism viewed from an angle different from that of Fig. 10, wherein Fig. 11 (a) is a view showing a state in which a pin of a button carrier portion passes through a button hole of a button, Is a view showing a state in which the button catching foot is moved upward with respect to the button carrier portion.

Description of the Related Art [0002]

2: Button Feeder

10: Button Feeder

13:

20: button hole position adjusting section

21, 22: Button catch arm

23: camera (position detecting means, direction detecting means)

30: Button return section

31: Button carrier portion

32: clamp part

33: Fixed arm portion

34: Up and down moving arm portion

35: Actuator

37:

38:

41: Button capture Foot

110: Angle adjusting mechanism

113, 114: rotation angle adjusting motor (driving source)

130: Position adjusting mechanism

136: Y-axis motor (driving source)

144: X-axis motor (driving source)

Claims (8)

1. A button mounting sewing machine having a sewing operation portion having a button seizing foot and sewing and attaching the button to the sewing material while holding the button with a button catching foot and a button feeding means for feeding the button to the button capturing foot, Further comprising button hole position adjusting means for determining the position of the button to correspond to the direction at the time of sewing and attaching the button, Characterized in that the button supply means has a button carrier portion for supporting the button from below and carries it with the button catching foot after putting the button on the button carrier portion. The method according to claim 1, Wherein the button supply means A stationary arm portion having one end for supporting the button carrier portion, A clamp part which contacts the button from above and holds the button in cooperation with the button carrier part, A vertical moving arm portion having one end vertically moving while supporting the clamp portion; And a driving portion for rotating the fixed arm portion and the up-and-down moving arm portion along the horizontal direction. 3. The method of claim 2, The distal end portions of the fixed arm portion and the up and down moving arm portion are moved toward the moving direction when the button is carried by the button catching foot so that the button supply means does not contact the button catching foot, Wherein the button-sewing machine is bent. The method according to claim 2 or 3, Characterized in that the button carrier portion has a suction portion for sucking air and the button is held by the suction force of the suction portion. 5. The method of claim 4, A first seal for blocking a gap between the button carrier portion and the button, And a second seal for blocking a clearance between the clamp portion and the button. 4. The method according to any one of claims 1 to 3, Wherein the button hole position adjusting means comprises: Direction detecting means for detecting a button direction around an axis passing through the center of the button, An angle adjusting mechanism for rotating the button, And an angle control means for driving a drive source of the angle adjusting mechanism so as to correspond to a predetermined direction in an operation of sewing and attaching the buttons in accordance with the direction of the button detected by the direction detecting means, . 4. The method according to any one of claims 1 to 3, Wherein the button hole position adjusting means comprises: Position detecting means for detecting a positional deviation of the button from a predetermined position at the time of sewing and attaching the button, A position adjusting mechanism for adjusting the position of the button, And a position control means for driving the driving source of the position adjusting mechanism in accordance with the positional deviation of the button detected by the position detecting means. 4. The method according to any one of claims 1 to 3, Characterized in that the button supplying means has a suction portion for sucking air from below the button carrier portion and carries the button by the suction force of the suction portion after holding the button on the button carrier portion, The sewing machine.

Images