TWI452191B - Sewing sewing machine - Google Patents

Description

Sewing machine with sewing machine Field of invention

The present invention relates to a sewing machine for sewing fasteners including a button supply device.

Background of the invention

In the sewing machine for sewing, the needle bar holding the needle is moved up and down with respect to the button hole of the button of the button gripping leg which is held almost horizontally above the object to be sewn, and the button is sewn to the object to be sewn. At this time, a button supply device that supplies a button to a carrier mechanism every time a button is sewn is known (for example, Patent Document 1).

As shown in Fig. 10, in the button gripping leg 101, in order to prevent the button B1 from coming off, the claw portions 101a and 101a held by the fitting button B1 are provided. The carrier mechanism of the prior art has a button bearing portion 102 that supports the button B1 at the front end of the button carrier portion 102. The button supporting portion 102 is moved by the shaft portion 102b as a rotating shaft, and the front end portion is rotated to engage the button B1 between the claw portions 101a and 101a. As shown in Fig. 11(a), the button carrying portion 102 has a plurality of pins 102a corresponding to the position of the buttonhole of the button B1 and the interval between the button holes. The button carrying portion 102 is borrowed from the lower surface of the button B1, and at the same time, the plurality of pins 102a are inserted upward from below the buttonhole of the button B1 to support the button B1. The length of the pin 102a is greater than the thickness of the button B1. That is, the front end of the pin 102a protrudes from the front end of the buttonhole. Therefore, the button B1 is less likely to fall off from the portion 102, and the button B1 can be more reliably supported.

Further, when the button B1 is fitted to the claw portions 101a and 101a of the button gripping foot 101, as shown in Fig. 11(b), the button gripping foot 101 is moved upward with respect to the button carrying portion 102. Thereby, the buttonhole of the button B1 is pulled out from the pin 102a of the button carrying portion 102. Thereafter, the front end portion of the button carrying portion 102 is rotated away from the claw portions 101a, 101a of the button gripping foot 101. Thereafter, the button gripping foot 101 is moved downward to bring the button B1 close to the object to be sewn. Thereafter, the needle falls to the buttonhole of the button B1 to form a stitch, and the stitching of the button B1 to be sewn is performed.

[Patent Document 1] Japanese Patent Laid-Open Publication No. Hei 5-84367

However, in the button supply device including the carrier mechanism of the prior art, in order to solve the insertion of the pin 102a of the button carrying portion 102 with the buttonhole of the button B1, the button gripping foot 101 moves upward, and the button carrying portion 102 moves. After that, the button gripping foot 101 is required to be lowered again. Therefore, there is a problem that the period of the stitching of the button B1 takes a long time to move up and down the button gripping foot 101.

Further, the button carrying portion 102 having the pin 102a corresponding to the position, the interval, and the button hole size of the button hole of the button B1 is prepared in accordance with the type of the button, and the cost of the button supply device is increased. In addition, whenever the type of the button is changed, the button carrying portion 102 needs to be replaced, so that the replacement work is very complicated, and the time required for the replacement work makes the overall work efficiency of the button stitching significantly lower.

Furthermore, when the thick button is stitched, the length of the pin 102a of the button carrying portion 102 increases due to the thickness of the button, so that the pin 102a of the button carrying portion 102 is inserted into the button hole of the button, and the button gripping pin is used. 101 needs to move up a lot. At this time, when the upward movement of the button gripping foot 101 is excessively large, the possibility that the needle positioned above the button gripping foot 101 comes into contact with or strikes with the button is generated. Therefore, there is a limit to the range of movement of the button gripping foot 101 upward. That is, when the thickness of the button is more than a certain amount, the button gripping foot 101 cannot detach the button from the pin 102a of the button carrying portion 102a. That is, in the button supply device of the prior art, there is a problem that a button having a thickness of a certain thickness or more cannot be supplied.

In addition, there is also a method of moving the button carrying portion 102 to the lower side to solve the problem that the pin 102a of the button carrying portion 102 is inserted into the button hole of the button B1. However, when the button carrying portion 102 is moved downward, since the button carrying portion 102 collides with the object to be sewn, the movement range of the button carrying portion 102 below is restricted. Therefore, even if the button carrying portion 102 moves downward, there is a problem that it is difficult to supply a thick button.

The present invention has been made in view of the above problems, and an object thereof is to provide a sewing machine for sewing fasteners having a button supply device for a sewing machine that can supply a button more efficiently.

The invention described in the first aspect of the invention is a sewing machine for sewing a sewing machine, comprising: a button gripping leg, a button holding claw for holding the button, a sewing operation portion for sewing the sewing object, and a button for supplying the button to the foregoing a button feeding mechanism for button gripping; further comprising a button hole position adjusting mechanism for positioning the button to correspond to a direction in which the button is stitched; the button feeding mechanism has a button bearing portion for supporting the button from below, and the button is placed After being carried on the button bearing portion, the handle is carried to the button gripping leg.

The sewing machine according to the first aspect of the invention, wherein the button supply mechanism has a fixed arm portion that supports the button bearing portion at one end side, abuts a button from the upper side, and the button The carrier portion operates in cooperation, and the clip portion of the button is clamped, the one end side supports the clip portion, the upper arm portion is moved up and down, and the drive portion that rotates the fixed arm portion and the upper and lower boom portions in the horizontal direction.

In the sewing machine for sewing according to the second aspect of the invention, the fixed arm portion and the upper and lower boom portions are bent into the fixed arm portion and the up and down movement. The front end portion of the arm portion faces a moving direction when the button is conveyed to the button gripping leg, so that the button supply mechanism does not abut the button gripping leg.

In the sewing machine for sewing according to the second aspect of the invention, the button carrying portion has a suction portion that sucks air, and the button is held by the suction force of the suction portion.

The sewing machine for sewing according to the fourth aspect of the invention of the fourth aspect of the invention of the present invention is characterized in that the first sealing member for sealing a gap between the button bearing portion and the button, and the clip are sealed. The second seal that creates a gap between the part and the button.

The invention of the sewing machine for sewing according to the first to fifth aspect of the invention, wherein the button hole position adjusting mechanism has a direction detecting mechanism for detecting a direction of a button around an axis of the button center, The button adjusting and rotating angle adjusting mechanism and the driving direction of the angle adjusting mechanism according to the direction of the button detected by the direction detecting mechanism, and the angle control mechanism corresponding to a predetermined direction in the button sewing operation.

The sewing machine for sewing according to any one of claims 1 to 6, wherein the button hole position adjusting mechanism has a positional deviation of a predetermined position when the button is sewn from the button. The position detecting mechanism, the position adjusting mechanism for adjusting the position of the button, and the position control mechanism for driving the driving source of the position adjusting mechanism according to the positional deviation of the button detected by the position detecting mechanism.

In the sewing machine for sewing according to any one of the first to third aspects of the invention, the button supply mechanism includes a suction portion that sucks air from a lower portion of the portion, and the suction portion The attraction is held by the button bearing portion and then transported to the button gripping leg.

According to the invention of claim 1, the button supply mechanism holds the button from the up and down direction and conveys it to the button gripping leg. Further, the button is positioned by the button hole position adjusting mechanism to correspond to the direction in which the button is stitched. Thereby, the pin of the buttonhole of the insertion button is not required to be disposed in the button supply mechanism, and the button supply mechanism conveys the button to the button gripping foot, and the button is handed over to the button gripping foot by releasing the button. Therefore, the button gripping foot does not need to move up and down, and the action time point of moving down on the button gripping foot can be solved, and the cycle of the button stitching consumes unnecessary problems, and the productivity of the sewing machine is greatly improved.

Further, as described above, since the button supply mechanism holds the button and carries it, the button can be supported without being positioned, spaced, or the size of the buttonhole of the buttonhole. Therefore, it is possible to solve the problem that in the conventional technique, a button bearing portion having a pin corresponding to the position, the interval, and the button hole size of the button hole is prepared according to the type of the button, the problem of the cost of the button supply device is increased, and the button supply of the sewing machine is provided. The cost of the device is greatly reduced. In addition, the conventional technique can be solved, because the button bearing portion needs to be replaced whenever the type of the button is changed, so the replacement operation is very complicated, and the time required for the replacement operation makes the overall work efficiency of the sewing buckle significantly lower. The problem can be further improved the productivity of the sewing machine.

Furthermore, as described above, the button gripping foot does not need to move up and down. Therefore, the following problems can be solved, that is, as in the prior art, in order to remove the thick button from the button bearing portion, when the button gripping foot is moved upwards substantially, there is a possibility that the button contacts the needle or collides, Therefore, the button of a certain thickness or more is not supplied by the button supply device of the prior art. Therefore, it is possible to provide a button supply device for a sewing machine which can supply a button to a button grip foot without being around the thickness of the button, and the usability and reliability of the sewing machine are greatly improved.

Furthermore, the buttonhole position adjustment mechanism positions the button to correspond to the direction in which the button is stitched. That is, the direction of the buttonhole of the button is adjusted by the button hole position adjusting mechanism to correspond to the needle under the needle stitched by the button. Thereby, the stitching of the button held by the button gripping foot can be performed more smoothly. Therefore, the productivity of the sewing machine can be improved. In addition, when the button is sewn, the needle and the button are not impacted when the needle is dropped, and the reliability of the sewing machine can be further improved.

In addition, the positioning of the button of the button hole position adjusting mechanism can be performed before and after the supply of the button by the button supply mechanism, and when the button supply mechanism of the button supply mechanism changes direction, the positioning is considered. .

According to the invention of claim 2, since the upper and lower movable arm portions move up and down to move the nip portion up and down, the nip portion is lowered from the lower side of the button supporting the button carrier portion to hold the button. That is, the button carrying portion and the fixed arm portion do not need to move up and down. Therefore, the driving portion for holding the button can be simplified. In addition, since the button bearing portion does not move up and down, the button supported on the button bearing portion is not supported by the vibration or tilt of the up and down movement, and can be reliably supported.

According to the invention of claim 3, part or all of the fixed arm portion and the upper and lower moving arm portions are bent or bent so that the fixed arm portion and the front end portion of the upper and lower moving arm portions are moved toward the aforementioned button. When the button grips the foot, the direction of movement is such that the button supply mechanism does not abut the button gripping foot. Therefore, the button supply mechanism does not abut against the button gripping foot due to the horizontal rotation of the fixed arm portion and the upper and lower boom portions of the driving portion, thereby hindering the supply of the button.

According to the invention of claim 4, the button carrying portion has a suction portion that attracts air, and the button is held by the attraction force of the suction portion. Thereby, the button can be more reliably held by the button supply mechanism.

Further, as described above, since the button is held by the attraction force of the attraction portion, the button can be held not at the position, the interval of the buttonhole of the button, or the size of the buttonhole. Therefore, it is possible to solve the problem that in the conventional technique, a button bearing portion having a pin corresponding to the position, the interval, and the size of the button hole is required depending on the type of the button, and the cost of the button supply device rises, the sewing machine The cost of the button supply device is greatly reduced. In addition, it can solve the problem that whenever the type of the button is changed, the button bearing portion needs to be replaced, so the replacement operation is very complicated, and the time required for the replacement operation makes the overall operation efficiency of the button significantly lower, the production of the sewing machine. Sexuality is improved.

According to the invention of claim 5, the first sealing member seals a gap formed between the first sealing member and the button, and the second sealing member seals a gap formed between the claw portion and the button. Thereby, the button holding portion and the nip portion are sealed by the button, and the holding force of the button by the attraction portion of the suction portion is greatly enhanced, and the button holding portion and the nip portion can more securely hold the button.

According to the invention of claim 6, the button detects the direction around the center line by the direction detecting mechanism, and drives the driving unit of the angle adjusting mechanism when the direction of the predetermined direction corresponding to the button stitching operation is different from the direction of the measurement. To make the button move and adjust the direction. Therefore, it is possible to make the direction of the button in the sewing more appropriate, and it is possible to perform good button stitching, improve the reliability and reliability of the sewing, and shorten the time required for the direction confirmation or the direction adjustment work, thereby improving the work efficiency. .

According to the invention of the seventh aspect of the invention, when the button detects the positional deviation of the predetermined position with respect to the sewing operation time by the position detecting mechanism, the driving source of the position adjusting mechanism can be driven to operate the button to adjust the position. . Therefore, it is possible to improve the position of the button at the time of sewing, and it is possible to perform good button stitching, improve the reliability and reliability of sewing, and shorten the time required for position confirmation or position adjustment work, thereby improving work efficiency. .

Simple illustration

Fig. 1 is a perspective view showing the structure of a sewing machine having a button supply device of the present invention.

Fig. 2 is an explanatory view showing the positional relationship between the button gripper of the button feeder, the button gripping arm of the buttonhole position adjusting portion, the button conveying portion, and the button gripping leg.

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

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

Fig. 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 structure of the button conveying portion.

Fig. 7 is an explanatory view showing the structure of the button gripping foot. Fig. 7(a) is a top view of the button gripping foot, and Fig. 7(b) is a side view showing the button gripping foot when viewed from the side where the button conveying portion is provided.

Fig. 8 is an exploded perspective view showing a part of the structure of the button transporting portion of the second embodiment.

Figure 9 is a cross-sectional view showing a part of the structure of the button transporting portion of the second embodiment.

Fig. 10 is an explanatory view showing the structure of a carrier mechanism of the prior art.

Fig. 11 is an explanatory view showing a bearing mechanism of the prior art from a different angle from Fig. 10. Fig. 11(a) shows the state of the button hole of the button insertion portion of the button bearing portion, and Fig. 11(b) shows the state in which the button gripping foot is moved upward with respect to the button bearing portion.

Detailed description of the preferred embodiment The best form for implementing the invention

(the entire structure of the invention)

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

As shown in Fig. 1, the sewing machine 1 for sewing (hereinafter referred to as a sewing machine) includes a button supply device 2, a sewing operation unit 40, and a control device (not shown) for controlling each part of the sewing machine 1, and the sewing machine 1 is input by an operator. The operation instruction pedal (not shown) and the operation panel (not shown) for performing various settings of the sewing machine 1. The sewing operation portion 4 has a button gripping leg 41 that holds the button B above the object to be sewn, and sutures the button B held by the button gripping foot 41 with respect to the object to be sewn. The button supply device 2 supplies the buttons B one by one to the button gripping legs 41.

The button supply device 2 has a button feeder 10, a buttonhole position adjusting portion 20 (button hole position adjusting mechanism) for adjusting the position and direction of the buttonhole of the button B which is fed one by one from the button feeder 10, and a buttonhole for the button. The button B that has been adjusted by the position adjusting portion 20 to adjust the position and direction of the buttonhole is transported to the button transporting portion 30 (button supply mechanism) of the button gripping foot 41 of the sewing operation portion 40.

The button feeder 10 has a button replenishing tray 11 as a receiving tray when the operator replenishes the button B, a delivery portion 12 that receives the button B that is sent one by one from the button replenishing tray 11, and a button B that is sent one by one from the delivery portion 12 one by one. It is transferred to the rotating plate 13 of the buttonhole position adjusting portion 20.

As shown in Fig. 2, a spiral button path is formed in the inner peripheral portion of the button replenishing tray 11. The button path forms a slope that rises as it goes toward the outside.

When the button feeder 10 is actuated, the button replenishing tray 11 vibrates, and the button B replenished to the button replenishing tray 11 is guided to the outside by the bottom of the spiral button path. Further, a delivery port 11a is provided on the outer peripheral portion of the button replenishing tray 11 on the side where the delivery portion 12 is provided. The button B is guided to the outer peripheral portion, and is sent out from the delivery port 11a to the hole portion 12b of the delivery portion 12.

The delivery unit 12 has a rotating portion 12c that rotates around the shaft portion 12a and moves the button in the hole portion 12b, and is fixed to the frame of the sewing machine 1, and is provided as a fixing portion 12d at the bottom of the hole portion 12b. 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 provided to penetrate the rotating portion 12c. Further, the lower surface portion of the rotating portion 12c and the upper surface portion of the fixed portion 12d are provided to slide. In other words, the upper surface of the fixing portion 12d has a function of the bottom surface of the hole portion 12b of the rotating portion 12c, and supports the button B. Further, since the rotating portion 12c rotates, the side portion of the hole portion 12b engages with the button B, and the button B moves as the position of the hole portion 12b accompanying the rotation of the rotating portion 12c changes.

Further, on the opposite side of the delivery port 11a of the button replenishing disk 11 with respect to the shaft portion 12A, a delivery port 12e is provided at a position where the movement path of the hole portion 12b in which the rotation portion 12c rotates overlaps. The button B that has moved to the upper side of the delivery port 12e by the rotation of the rotating portion 12c is dropped from the delivery port 12e to the lower side, and is sent to the hole portion 13b of the rotary plate 13.

The rotary plate 13 has a rotating portion 13c that rotates around the shaft portion 13a, moves the button B in the hole portion 13b, and a fixed portion 13d that is fixed to the frame of the sewing machine 1 as a bottom portion of the hole portion 13b. Further, the lower surface portion of the rotating portion 13c and the upper surface portion of the fixed portion 13d are provided to slide. That is, the upper surface of the fixed portion 13d has a function as a bottom surface of the hole portion 13b of the rotating portion 13c. Further, the rotating portion 13 is provided such that a part thereof overlaps the feeding portion 12 from below. Further, the movement path of the hole portion 13b that moves in accordance with the rotation of the rotating portion 13c is provided to pass below the delivery port 12e of the delivery portion 12. Thereby, the button B dropped from the delivery port 12e of the delivery unit 12 is dropped to the hole portion 13b of the rotary plate 13, and the button B is moved as the position of the hole portion 13b accompanying the rotation of the rotary portion 13c is changed.

Further, a delivery port 13e is provided at a position overlapping the movement path of the hole portion 13b with respect to the shaft portion 13a being the opposite side of the delivery port 12e of the delivery portion 12. The button B that has moved to the upper side of the delivery port 13e by the rotation of the rotating portion 13c is dropped from the delivery port 13e to the lower side, and is delivered to the button hole position adjusting portion 20. That is, the "delivery position" is a position at which the delivery port 13e is provided.

Further, the action of the button feeder 10 is controlled by the control device of the sewing machine 1.

(button hole position adjustment unit)

Next, the structure of the button hole position adjusting portion 20 for adjusting the position and direction of the buttonhole of the button B will be described in detail with reference to FIGS. 3 to 5. Further, in the description of the button hole position adjusting portion 20, the longitudinal direction of the linear motion shaft 138 that applies the forward movement to the button claw holding arms 21 and 22, which will be described later, is the horizontal direction, and is The direction in which the Y-axis direction intersects perpendicularly is the X-axis direction, and the vertical vertical direction is the Z-axis direction.

The sewing operation unit 40 performs the sewing of the button B by swinging the needle. Therefore, the button hole position adjusting portion 20 adjusts the direction of the button B in advance so that the direction in which the button holes are aligned and the direction in which the needle swings coincide with each other when the button B is transported to the button gripping legs 41. Further, when the button transport unit 30 transfers the button B from the button hole position adjusting portion 20 to the button gripping leg 41, the direction of the button B is changed by 90 degrees. Therefore, the button hole position adjusting portion 20 adjusts the direction of the button B to a direction in which the change of 90 degrees is considered.

The buttonhole position adjusting portion 20 has a pair of button gripping arms 21, 22, a camera 23 for confirming the position and direction of the buttonhole of the button B, and a position adjustment for moving the button gripping arms 21, 22 to any position of the XY plane. The mechanism 130 adjusts the angle adjusting mechanism 110 of the direction of the button (rotation angle).

The button gripping arms 21, 22 form a mutual symmetry. Each of the base end portions of the button gripping arms 21 and 22 is pivotally supported by the wrist mounting table 131 of the position adjusting mechanism 130 in a state in which the screws 28 and 29 (see FIG. 5) facing the vertical direction are pivotable. Mounting portions 21a and 22a near the outer peripheral portion of the lower portion of the button B are formed on the respective rotating end sides of the button gripping arms 21 and 22.

Further, as shown in Fig. 4, the button gripping arms 21, 22 have hub-like projections 21b, 22b on the lower side, respectively. The protrusions 21b and 22b are placed on the protrusions 21b and 22b so as to press the protrusions 21b and 22b to the direction in which the knob ends of the button gripping arms 21 and 22 approach each other. Thereby, each of the button gripping arms 21, 22 is attached to move toward the side of the rotating end portion where the button holding is performed, and the button holding member 111, 112, which will be described later, can hold the button.

Further, a solenoid 26 for driving a drive for releasing the button is provided on the upper side of the button grip wrist 22. The solenoid 26 has a plunger that protrudes and retreats toward the other button gripping wrist 21. A receiving member 27 abutting when the plunger of the solenoid 26 protrudes is provided on the other of the button grip wrists 21. By this, when the solenoid 26 is actuated, the receiving member 27 is pressed against the clamp spring 25, and the swivel end side of each of the button gripping arms 21, 22 is pushed open, and the button retaining state can be released.

As shown in Fig. 3, the angle adjusting mechanism 110 has holding members 111, 112 provided on the respective rotating end portions of the button gripping arms 21, 22, and the holding members 111, 112 are moved to rotate the button B. The rotation angle adjusting motors 113, 114 of the driving source, the driving pulley 115 attached to the output shafts of the respective rotation angle adjusting motors 113, 114, and the teeth interlocking with the holding members 111, 112 on the lower side of the button holding arms 21, 22 The strip member 116 has a driven pulley 117 having a pinion gear portion 117a engaged with the rack member 116, and a fixed belt 118 for rotating the driving pulley 115 and the driven pulley 117 in conjunction therewith.

Further, the active pulley, the rack member, the driven pulley, and the actuating belt provided on the holding member 111 side are not shown, and the driving pulley 115, the rack member 116, the driven pulley 117, and the fixed belt 118 on the holding member 112 side are omitted. For the same construction.

Each of the holding members 111 and 112 is formed in an arc shape in plan view, and is disposed so as to face each other on the inner side of the curved portion, and is brought into contact with the outer periphery of the button B on each of the surfaces.

The rack member 116 provided on the holding member 112 side is disposed on the lower surface side of the button gripping wrist 22, and is formed in an arc shape which is almost the same shape as the holding member 112 when viewed in plan. A rail-shaped ridge portion 116a that is formed in an arc shape in plan view is formed on the upper surface of the rack member 116. On the other hand, the swivel end portion of the button grip wrist 22 is formed adjacent to the placing portion 22a, and penetrates the arcuate guide hole 22c of the upper and lower surfaces of the button grip wrist 22. The rib portion 116a of the rack member 116 is inserted into the guide hole 22c from below. Then, in a state in which the upper end surface of the ridge portion 116a inserted into the guide hole 22c is in close contact with the lower surface of the holding member 112, the rack member 116 is aligned with the direction of the holding member 112, and is coupled by a fixing screw. The width of the ridge portion 116a is formed to be smaller than the body portion of the rack member 116 (the portion other than the ridge portion 116a) and the holding member 12. The guide hole 22c has the same arc shape as the ridge portion 116a, and is formed longer than the ridge portion 116a. Therefore, the ridge portion 116a is fixed to the guide hole 22c by the main body portion of the rack member 116 and the holding member 112 so as not to be detached from the upper and lower sides, and can be moved along the circular trajectory along the guide hole 22c. With this configuration, the inner side surface of the holding member 22 moves along the circular arc.

Rack teeth 116b are formed on the outer surface of the rack member 116 as an outer side of the arc. The rack teeth 116b are engaged with the pinion portion 117a of the driven pulley 117.

The driven pulley 117 is axially supported under the button grip 22 with a support shaft 117b facing in the up and down direction. The upper half of the driven pulley 117 serves as a pinion portion 117a, and the lower half serves as a pulley portion for erecting the actuating belt 118. The pinion gear portion 117a is concentric with the pulley portion, and the support shaft 117b is pivoted about the center.

Gear outer teeth are formed on the outer peripheral surface of the outer pulley 115 and the outer peripheral surface of the pulley portion of the driven pulley 117. The actuating belt 118 is erected on the pulley portions of the driving pulley 115 and the driven pulley 117. A tooth is formed on the inner side of the actuating belt 118, and the teeth of the belt 118, the active pulley 115, and the driven pulley 117 are engaged.

The angle adjustment of the button B of the angle adjusting mechanism 110 will be described. Each of the holding members 111 and 112 of the button gripping arms 21 and 22 grips the button B in a state of being in contact with the outer ends of the outer circumference of the button B on the inner side of each of the arcs. The motors 113 and 114 are driven by the respective rotation angles, and the respective holding members 111 and 112 are moved along the circular arc. At this time, each of the rotation angle adjustment motors 113 and 114 is rotationally driven in the same direction with the same amount of movement. Thereby, when the holding member 111 moves along the arc in the front (or the rear), and the other holding member 112 moves in the rear (front) along the arc, the button B passes the center line of the center portion as the axis. Rotate in the counterclockwise direction (or clockwise). Thereby, the angle adjustment (direction adjustment) of the button B is performed. The arcs of the inner side surfaces of the holding members 111 and 112 are all set to the same radius, and the center position of the arc of each inner side surface is set to be almost parallel to the moving end of each of the button gripping arms 21 and 22 away from the moving direction. On the straight line. Therefore, by the movement of the holding members 111 and 112 in the circular arc direction, the angle adjustment of the button B can be performed while maintaining the center position of the button B.

The position adjusting mechanism 130 has a wrist mounting base 131 that supports the base end portions of the respective button gripping arms 21 and 22, a holding bracket 132, 133 for holding the wrist mounting table 131, and upper and lower holding frames 132 and 133. The button holding handles 21 and 21 are supported by the transport table 134 at any position on the XY plane in a movable state, and the transporting table 134 is supported, and is supported as a fixed pedestal 135 that can be moved in the Y-axis direction. The Y-axis motor 136 that moves the driving grippers 21, 22 in the Y-axis direction, and the pinion 137 that is disposed on the output shaft of the Y-axis motor 136 are disposed along the Y-axis direction and are formed along the long direction thereof. a linear motion shaft 138 that engages the gear 137, a sliding guide 139, 139 that supports the linear motion shaft 138 to move in the Y-axis direction, and a bearing 140 that is fixed to one end of the linear motion shaft 138. The segment screw 141 of the transfer table 134 can be connected around the Z-axis to be disposed on the passing line of the detecting piece 142 fixed to the bearing 140, and the position of the origin of the Y-axis motor 136 can be detected by the presence or absence of the detecting piece 142. The origin sensor 143 serves as a transport stage 13 relative to the bearing 140 4, an X-axis motor 144 that drives a driving source of the Z-axis, an output shaft 145 disposed on the X-axis motor 144, and a shaft 146 that is pivotally rotatable about the Z-axis and extends from the fulcrum position. One of the two wrists in the two directions forms a transport wrist 147 that engages with the pinion 145, the other wrist that is pivotally supported by the support shaft 148, and is fitted to the transport table 134. The corner block 149 of the long hole 134a is provided on a passing line fixed to the detecting piece 150 of the wrist portion of the transport wrist 147, and detects the origin of the origin position of the X-axis motor 144 according to the presence or absence of the detecting piece 150. 151.

The position adjusting mechanism 130 is driven by the Y-axis motor 136 to move the button gripping arms 21 and 22 in the Y-axis direction, and is driven by the X-axis motor 144, centering on the screw 141 of the shaft supporting table 134, so that the button is grasped. The wrists 21, 22 are rotated around the Z axis. That is, with the Y-axis motor 136 and the X-axis motor 144 operating together, the swivel end side of the button gripping arms 21, 22 is moved and positioned at any position on the X-Y plane.

As shown in Fig. 1, the camera 23 is fixed in a support frame without changing the position, and its optical axis is supported in parallel with the Z-axis direction.

The buttonhole position adjusting portion 20 is controlled by the control device of the sewing machine 1 when the button is supplied. That is, when the button is supplied, the solenoid 26 is controlled to be in a state in which the plunger is protruded. In a state in which the respective button gripping arms 21 and 22 are separated (button liberation state), the placing portions 21a and 22a are controlled to stand by at a position below the delivery port 13e of the rotary plate 13 of the button feeder 10. When the button B dropped from the delivery port 13e is received by the placing portions 21a and 22a, the solenoid 26 is controlled to be in a state in which the plunger is retracted, and the button B is held by the holding members 111 and 112.

The camera B is photographed from above by the camera 23, and the center position of the button B is obtained from the position of each buttonhole or the position of the outer edge of the button by image processing such as binarization. Then, the position of the detection center is compared with the position suitable for delivery to the button transport unit 30, and the positional deviation is calculated. The button transport unit 30 maintains the position of the delivery button B, and performs the operation of transferring the button B to the button gripping foot 41 by merely changing the direction in the rotational transport operation. Therefore, "the position suitable for delivery to the button conveying portion 30" refers to a position in which the button B reaches the button gripping foot 41, such as a predetermined position at the time of the sewing operation. In other words, the camera 23 and the control device for the sewing machine that calculates the positional deviation have a function as a "position detecting mechanism".

Similarly, the position of each button hole is detected from the captured image of the button B held by each button gripping wrist 21, 22, and the direction (angle) of the center of the button B is obtained. Then, the angle of the detection is compared with the direction (angle) suitable for delivery to the button transport unit 30, and the angular deviation is calculated. Here, the "direction suitable for delivery to the button transport unit 30" indicates the direction in which the button B after the transfer of the button transport unit 30 is predetermined when the button gripping foot 41 is used as a sewing operation. That is, the camera 23 and the control device for the sewing machine that calculates the angular deviation have a function as a "direction detecting mechanism".

The control device 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 of the position of the correction button B to solve the positional deviation. That is, the control device of the sewing machine has a function as a "position control mechanism".

Further, the control device of the sewing machine drives each of the rotation angle adjustment motors 113 and 114 with an operation amount equal to the same direction of rotation in accordance with the calculated angular deviation, and performs direction correction control for correcting the direction (angle) of the button B. That is, the control device of the sewing machine has a function as an "angle control mechanism".

After the correction control, the control device of the sewing machine transfers the button B to the button conveying portion 30, and controls the solenoid 26 to the plunger protruding state, and releases the button B to end the action of the button position adjusting portion 20. control.

Further, as shown in FIG. 3, the lower surface portion of the button B when the holding members 111 and 112 hold the button B is in a state in which the mounting portion 21a, 22a supports a portion near the outer periphery of the button B, near the center of the button. The lower part is exposed. Therefore, the button carrying portion 31 can be abutted from below by adjusting the lower surface of the button B after the button hole position adjusting portion 20 adjusts the position and direction of the buttonhole.

(button transfer unit)

Next, in the sixth drawing, the configuration in which the button B is carried by the button transport unit 30 to the button 41 will be described in detail.

The button transporting portion 30 has a lower surface portion of the button B, and a receiving button-shaped button bearing portion 31 for supporting the button B, and the button is abutted against the opposite side of the button carrying portion 31, that is, the upper portion of the button B. The disk-shaped portion 32 of the button B is sandwiched with the button carrying portion 31, the button supporting portion 31 is supported at one end, the fixed end portion 33 of the frame portion 36 is fixed to the fixed end portion 33 of the frame portion 36, and the other end is axially supported by the frame portion 36. Rotating, the clamp portion 32 is supported so as to be movable up and down the upper arm portion 34, and the fixed arm portion 33 and the upper and lower boom portions 34 are connected to be driven so that the other end portion of the upper and lower moving arm portions 34 is vertically The rotary actuator 35 (for example, a solenoid or the like), the frame portion 36 that supports the fixed arm portion 33 and the vertical boom portion 34, and the rotating shaft 37 that is extended to be vertical, fixed to the frame portion 36, and the rotationally-driven rotating shaft 37 Drive unit 38. Further, as shown in Fig. 6, one end side of the fixed arm portion 33 and the vertical boom portion 34 is curved, and the fixed arm portion 33 and the front end portion of the upper and lower boom portions 34 are fixed toward the driving portion 38 and are moved up and down. The direction of the rotation of the position P of the arm portion 34 to the position Q, that is, the direction of movement when the button B is conveyed.

The actuator 35 has a movable member 35a that is provided to be movable in the vertical direction, and a stator 35b that is driven to move the movable member 35a up and down. The lower end portion of the stator 35b of the actuator 35 is coupled to the fixed arm portion 33, and the upper end portion of the movable member 35a is coupled to the upper and lower boom portions 34. Further, the action of the movable member 35a by the stator 35b of the actuator 35 is controlled by the control device of the sewing machine 1.

When the movable member 35a of the actuator 35 is operated to contract downward, the other end portion of the upper and lower boom portions 34 is rotated downward. That is, the clip portion 32 moves downward. At this time, when the button B is present on the button carrying portion 31, the clip portion 32 abuts the upper surface of the button B and presses the button B in the direction of the button carrying portion 31. That is, the holding button B is sandwiched by the clip portion 32 and the button carrying portion 31.

On the other hand, when the movable member 35a of the actuator 35 is operated to extend upward, the other end portion of the upper and lower boom portions 34 is rotated upward. That is, the clip portion 32 moves upward. In other words, as described above, the clip portion 32 is moved upward by the state in which the button B is held by the clip portion 32 and the button carrying portion 31, and the holding of the button B is released.

Further, as described above, the clip portion 32 is only required to be held and released by the button B. Therefore, the amount of movement of the actuator 35 and the angle of the swiveling action of the upper and lower boom portions 34 should be set to be required for holding and releasing the button B. The minimum range.

Further, the drive unit 38 is an actuator such as a motor that rotates the rotary shaft 37 by rotation and rotates the fixed arm portion 33 and the vertical boom portion 34. That is, when the button carrying portion 31 and the clip portion 32 move in accordance with the rotation, the button B is moved. At this time, the rotation range of the fixed arm portion 33 and the vertical boom portion 34 of the driving portion 38 is the smaller one (the θ side) of the inner angle formed by the position P and the position Q of the lower moving arm portion 34 in the second drawing. The range of angles (for example, 90 degrees). Further, the drive control of the drive unit 38 is performed by the control device of the sewing machine 1.

That is, in the position P, in a state where the button carrying portion 31 is positioned below the button B held by the button hole position adjusting portion 20, the movable member 35a of the actuator 35 is contracted downward, and the clip portion 32 is moved downward, and the button B is moved. The clip 32 and the button carrying portion 31 are held by the clip. Thereafter, the drive unit 38 is driven to rotate the fixed arm portion 33 and the upper and lower boom portions 34 to the position Q. Thereby, the button B is transported between the recesses 41c and 41d provided at the front end portions of the claws 41a and 41b of the button gripping foot 41.

(Sewing operation unit)

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

The sewing operation unit 40 has a button grip 41 that holds the button B above the object to be sewn while being sewn, and supports the needle to move up and down, and is provided as a swingable needle bar 42. After the stitching of the button B is completed, the thread is cut. The thread cutting mechanism (not shown) and the respective portions of the sewing operation unit 40 are provided, and the sewing frame 43 having various mechanisms (the spindle, the sewing machine motor, and the rocking mechanism of the needle bar 42) for operating the sewing operation unit 40 is provided therein.

Further, since the needle bar 42 is moved up and down by the driving of the sewing machine motor, the structure in which the stitches are formed and the tangent of the thread cutting mechanism are the same as those of the known sewing machine, and detailed description thereof will be omitted. Further, various operation control of the sewing operation unit 40 is performed by the control device of the sewing machine 1.

In addition, the sewing action portion 40 may be provided with a button moving mechanism that does not cause the needle bar to shake, moves the button gripping foot 41 side, and positions each button hole at the lower needle position, and can also swing the needle while holding the button. The sides are also moved while positioning each other.

As shown in FIGS. 7(a) and 7(b), the button gripping legs 41 of the button sewing operation portion 40 have claws 41a and 41b for holding the button B above the object to be sewn. A concave portion 41c is provided on a side surface portion of the claw 41b side (inside of the claw 41a) of the distal end portion of the claw 41a, and a concave portion 41d is provided on a side surface portion of the claw 41a side (the inner side of the claw 41b) of the distal end portion of the claw 41b. Further, the button gripping foot 41 has an elastic mechanism (not shown) such as a spring that has a tendency to move the claws 41a and 41b inward. Thereby, the person (button B) located between the recessed portion 41c and the recessed portion 41d is sandwiched and held by the claw 41a and the claw 41b. Further, the button gripping foot 41 has a driving portion (not shown) that is driven to rotate the front end portions of the claws 41a and 41b, and operates to release the claw 41a and the claw 41b in a direction away from each other. The clamping of button B.

When the button B of the button transport unit 30 is moved between the recesses 41c and 41d, the side surface portion inside the claw 41a and the side surface portion inside the claw 41b slide to the outside of the button B to extend to the outside. Thereafter, at a point in time when the button B enters between the recessed portions 41c and 41d, the claws 41a and 41b are attached to the inner side by the elastic mechanism to sandwich the button B. In this manner, the button B is fitted and held by the recesses 41c and 41d of the claws 41a and 41b. At this time, as shown in Fig. 7(a), the button conveying portion 30 does not abut against the button gripping foot 41 due to the bending of the fixed arm portion 33 and the vertical arm portion 34.

Thereafter, the movable member 35a of the actuator 35 is moved upward, and the clip portion 32 is moved upward to release the sandwiching of the clip B by the clip portion 32 and the button carrying portion 31. Thereafter, the drive unit 38 rotates the fixed arm portion 33 and the vertical boom portion 34 to the position P.

Further, as shown in Fig. 7(b), the claws 41a and 41b have a shape inclined obliquely toward the front end portion. On the other hand, the front end side of the fixed arm portion 33 and the vertical boom portion 34 is curved to avoid the claws 41a and 41b. When the fixed arm portion 33 and the vertical boom portion 34 are rotated from the rear toward the front, the claws 41a and 41b and the fixed arm portion 33 of the button transport portion 30 and the upper and lower boom portions 34 are prevented from colliding, and the button transport portion can be performed. 30 pairs of buttons hold the supply of button B of the foot 41.

(action of sewing machine)

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

First, the operator operates the operation panel to set the number of buttonholes corresponding to the button B and the spacing of the stitches. Thereafter, the button B is supplied to the button replenishing tray 11 of the button feeder 10 by the operator. Thereafter, the object to be sewn is placed in the sewing operation portion 40, and the operator steps on the pedal once. As described above, the button B is fed out one by one from the button feeder 10 to the button hole position adjusting portion 20, and is adjusted by the button hole position adjusting portion 20. The button B is supplied to the button gripping foot 41 of the sewing operation unit 40 by the button conveying unit 30 at the position and direction of the buttonhole of the button B. Then, when the operator steps on the pedal again, the needle bar 42 of the sewing operation unit 40 moves up and down, and the button B is sewn to the object to be sewn. When the stitching is completed, the thread cutting mechanism of the sewing operation unit 40 operates to perform tangential cutting. Further, after the end of the tangential line, the claws 41a and 41b of the button gripping foot 41 are moved to open outward, and the button for ending the stitching is released. Thereafter, the operator releases the sewn material whose stitching is completed by the button B.

Thereafter, when the button is sewn, the next object to be sewn is placed by the operator, and the same operation as described above is performed.

(The effect of the button supply device of the sewing machine of the present invention)

According to the above embodiment, after the button carrying portion 31 carries the button B to the button gripping foot 41, the button is removed by the clip portion 32 and the button carrying portion 31, even if the button gripping foot 41 does not move up and down, the button is also It can be handed over to the button gripping foot 41. Therefore, the button gripping foot 41 can solve the action time of moving down on the button gripping foot 41 without the need to move up and down, and the period of stitching of the button B is excessively expensive, and the productivity of the sewing machine is greatly improved.

Further, as described above, the button B is sandwiched and supported by the clip portion 32 and the button carrying portion 31, so that the button B can be supported without being positioned, spaced, or the size of the buttonhole of the button B. Therefore, it is possible to solve the problem that in the conventional technique, a button bearing portion having a pin corresponding to the position, the interval, and the size of the buttonhole of the buttonhole is prepared according to the type of the button, and the cost of the button supply device is improved, and the button of the sewing machine is used. The cost of the supply device is greatly reduced. In addition, it can be solved in the prior art that since the button bearing portion needs to be replaced whenever the type of the button is changed, the replacement operation is very complicated, and the time required for the replacement operation makes the overall work efficiency of the button sewing significantly lower. The problem is that the productivity of the sewing machine can be improved.

Furthermore, as described above, the button gripping foot 41 does not move up and down. Further, the button carrying portion 31 does not move up and down, and the clip portion 32 can also move up and down within a minimum range in which the button B can be held and released. Therefore, it is possible to solve the problem that, as in the prior art, in order to remove the thick button from the button bearing portion, when the button gripping foot moves substantially upward, the button may contact or collide with the needle, and the button of the thickness or more may be The problem is that the button supply device of the prior art cannot supply the problem. Therefore, it is possible to provide a button supply device for a sewing machine which can supply a button to a button grip foot without affecting the thickness of the button, and can greatly improve the usability and reliability of the sewing machine.

Further, since the upper and lower movable arm portions 34 move up and down to move the nip portion up and down, the button holding portion 31 and the fixed arm portion 33 do not need to move up and down when the button B is gripped. Therefore, the driving portion for holding the button B can be simplified. In addition, since the button carrying portion 31 does not move up and down, the button B supported by the button carrying portion 31 can be reliably supported without being subjected to vibration or tilt accompanying the up and down movement.

Further, since one end side of the fixed arm portion 33 and the vertical boom portion 34 is curved, the front end portions of the fixed arm portion 33 and the upper and lower boom portions 34 are oriented in the moving direction when the button is conveyed to the button gripping leg 40, The button supply mechanism 30 and the button gripping foot 41 do not abut. Therefore, in the horizontal direction of the fixed arm portion 33 and the vertical boom portion 34 of the drive unit 38, the button supply mechanism 30 abuts against the button gripping foot 41 to hinder the supply of the button B.

In the button supply device 2, when the direction around the center line of the button is detected by the camera 23, and the direction of the predetermined direction corresponding to the button stitching operation is different from the direction of the measurement, the rotation angle adjusting motor 113 of the angle adjusting mechanism 110 is driven. , 114, the button B is rotated to adjust the direction. Therefore, at the time of sewing, the direction of the button B can be more appropriately adjusted, and good button stitching can be performed, the reliability and the reliability of the sewing can be improved, and the time required for the direction confirmation or the direction adjustment work can be shortened, and work efficiency can be achieved. Improve.

Similarly, the button B detects the positional deviation of the predetermined position at the time of the button sewing operation by the camera 23, and drives the X-axis and Y-axis motors 144 and 136 of the position adjusting mechanism 130 to move the button B to adjust the position. Therefore, at the time of sewing, the position of the button B can be more appropriately adjusted, and good button stitching can be performed, the reliability and the reliability of the sewing can be improved, and the time required for the position confirmation or the position adjustment work can be shortened, and work efficiency can be achieved. Improve.

(Second embodiment)

Next, a second embodiment different from the above embodiment will be described in detail. The same components as those of the above-described embodiment are denoted by the same reference numerals, and the detailed description is omitted. Further, the button feeder 10, the button position adjusting portion 20, and the sewing operation portion 40 are the same as those of the above embodiment.

As shown in Fig. 8 and Fig. 9, the button transport unit 30A of the second embodiment has an air inlet 51 provided at the center of the upper surface portion, and a circular first seal member surrounding the air inlet port 51 on the upper surface portion. The disk-shaped button bearing portion 31A of 52 is provided, the disk-shaped nip portion 32A of the second sealing member 53 is provided at the lower portion, the fixed arm portion 33A having the air passage 33Aa leading to the air inlet 51, and the supporting nip portion 32A are provided inside. The upper and lower moving arm portions 34A are pivoted in the vertical direction, and the fixed arm portions 33A and the upper and lower moving arm portions 34A are coupled to each other, and the upper and lower moving arm portions 34 are moved up and down by the actuator 35 and the fixed supporting fixed arm portions 33A. The boom portion 34A is supported by a frame portion 36 that can move up and down, a rotating shaft 37, and a driving portion 38. The actuator 35, the frame portion 36, the rotating shaft 37, and the driving portion 38 are the same as those of the above embodiment.

The button holder 31A is provided with an intake port 51, and is connected to an air suction duct 33Aa and an intake duct 54 provided in the fixed arm portion 33A, and is connected to an attraction generating portion (not shown) such as a pump. In other words, when the air is sucked in, the air is sucked from the air intake port 51 to generate an attractive force, and the button B is sucked and held. Further, a first seal 52 is provided on the upper surface of the button carrying portion 31A to surround the intake port 51. The first seal 52 is made of an elastic member such as rubber. As shown in Fig. 8, when it comes into contact with the lower surface of the button B, it is in close contact with each other without causing air to leak from between the first seal 52 and the button B. Further, the first seal 52 is in close contact with the button carrying portion 31A, and air does not leak from between the first seal 52 and the button carrying portion 31A.

A circular second seal member 53 having a diameter almost the same as that of the first seal member 52 is provided on the lower surface portion of the clip portion 32A. Similarly to the first sealing member 52, the second sealing member 53 is made of an elastic member such as rubber. As shown in Fig. 9, when the surface of the button B is in contact with the surface of the button B, the dense synthetic air does not pass from the second sealing member 53 and the button B. Leaked out. The second seal 53 and the nip 32A are combined with air so as not to leak from between the second seal 53 and the nip 32A. Further, the movable member 35a of the actuator 35 expands and contracts downward, and the fixed arm portion 33A is rotated in the vertical direction, and the configuration in which the accommodating portion 32A moves up and down is the same as that of the button transporting portion 30 of the above-described embodiment, and therefore detailed description thereof will be omitted. . That is, with the action of the actuator 35, the clip portion 32A operates on the button B, and pushes the button B from the opposite side of the button carrying portion 31A to the suction port 51 of the button carrying portion 31A. Further, the pressing of the button B by the clip portion 32A and the pressing of the button B on the button carrying portion 31A are not required to be strong, and the button B is held by the clip portion 32A and the button carrying portion 31A by the pressing force. 2 The sealing member 53 is in close contact with the upper surface of the button B, and the first sealing portion 52 may be in close contact with the lower surface portion of the button B. Further, the rise of the clip portion 32A by the driving of the actuator 35 may be such that the adhesion of the second seal portion 53 to the upper surface of the button B can be solved. That is, the driving of the actuator 35 is also driven and controlled in accordance with the pressing force of the clip portion 32A to the button B.

At this time, as shown in FIG. 9, when the positional relationship of the button B is sandwiched by the button carrying portion 31A and the clip portion 32A, the button carrying portion 31A, the first sealing member 52, the clip portion 32A, and the second sealing member 53 are used. , a sealed space that is formed by a buttonhole of the button B. At this time, the air in and out of the sealed space is only the suction port 51. In other words, when the suction generating unit is operated in the state in which the sealed space is generated, air is taken in from the suction port 51 to generate an attractive force. At this time, since the first seal 52 and the second seal 53 prevent air from leaking, it is possible to effectively prevent the air from flowing from the upper side of the button B through the buttonhole, and the attraction force is lowered, and the button B and the clip 32A are extremely Strong attraction. Thereby, the button conveying portion 30A can hold the button B with a stronger holding force. Further, when the interval of the buttonholes is known, the first sealing member 52 and the second sealing member 53 are preferably set to surround the inner diameter of the full buttonhole. The button conveying portion 30A holds the button B in this manner, and carries the button B to the button gripping foot 41. Therefore, the suction port 51 has a function as a "suction portion". Further, the drive unit 38 rotates the fixed arm portion 33A and the vertical boom portion 34A by the rotation shaft 37, and the button B is transported to the button gripping foot 41 in the same configuration as the button transport portion 30 of the above-described embodiment. Therefore, detailed description is omitted.

Further, when a sufficient attraction force of the suction port 51 is generated, the clip portion 32A and the second seal member 53 may not be provided, and the suction port 51 of the button bearing portion 31A provided with the first seal member 52 may generate an attraction force and be adsorbed. Keep button B. At this time, when the holding force of the button supporting portion 31A on the button B is released, the attraction generating portion stops the operation, and the generation of the suction force of the intake port 51 is stopped. At this time, since the movement of the clip portion 32A is not required to be moved up and down, the period of the button supply can shorten the amount of time required for the clip portion 32A to move up and down.

(Effects of the button supply device of the sewing machine according to the second embodiment)

According to the second embodiment, in addition to the effects of the first embodiment, the button carrying portion 31A holds the button B with the attraction force of the suction portion 51. Thereby, the button B can be more reliably held by the button hole supply mechanism 30A.

Further, as described above, since the button B is held by the attraction force of the attraction portion 51, the button B can be held not at the position, the interval of the buttonhole of the button B, or the size of the buttonhole. Therefore, it is possible to solve the problem that in the conventional technique, a button bearing portion having a pin corresponding to the position, the interval, and the size of the buttonhole of the buttonhole is prepared according to the type of the button, and the cost of the button supply device is improved, and the button of the sewing machine is used. The cost of the supply device is greatly reduced. In addition, it can be solved in the prior art that since the button bearing portion needs to be replaced whenever the type of the button is changed, the replacement operation is very complicated, and the time required for the replacement operation makes the overall work efficiency of the button sewing significantly lower. The problem is that the productivity of the sewing machine can be improved.

Further, the first seal 52 seals a gap formed between the button carrying portion 31A and the button B, and the second seal 53 seals a gap formed between the clip portion 32A and the button B. Thereby, the button B is sealed, and between the button holding portion 31A and the nip portion 32A, the holding force of the button B by the attraction force of the suction portion 51 is greatly enhanced, and the button B can be more reliably held by the button carrying portion and the nip portion.

(other)

Further, in the above-described embodiment and the second embodiment, the button carrying portions 31 and 31A are fixedly held by the fixed arm portions 33 and 33A, and the button B may be provided to move up and down.

Further, the supply of the button B to the button hole position adjusting portion 20 by the button feeder 10 may be another method. For example, the button can be manually supplied to the button gripping wrists 21, 22 of the buttonhole position adjusting portion 20.

Further, the bending of the fixed arm portion and the upper and lower boom portions is not limited to the bending of the end side of the above-described embodiment, and part or all of the fixed arm portion and the upper and lower boom portions are bent or bent into the fixed arm portion and the upper and lower boom portions. The front end faces the moving direction when the button is conveyed to the button gripping foot, so that the button feeding mechanism does not abut the button gripping foot.

Further, the range of the rotation of the fixed arm portion 33 (33A) and the vertical boom portion 34 (34A) of the drive portion 38 is not limited to the range of the angle θ. It may also be an angular range formed on the larger side between the position P and the position Q as a diagonal of the angle θ. At this time, the fixed arm portion 33 (33A) and the upper and lower boom portion 34 (34A) do not need to avoid the claws 41a, 41b of the button gripping foot 41, so that the shape does not need to be bent or bent.

Further, in the above-described embodiment, the angle adjusting mechanism 110 and the position adjusting mechanism 130 of the button are disposed in front of the button conveying portion 30, and the angle adjustment is performed, and finally, the direction of the button in the button sewing operation is adequately optimized. Contribution, regarding the position adjustment, after adjustment, when the button gripping foot 41 is held, the position-adjusted button B reproduces the positional change, which reduces the possibility of performing position adjustment.

Therefore, the angle adjustment mechanism 110 and the position adjustment mechanism 130 may be mounted at a position where the step of the button conveyance unit 30 is performed, for example, the button gripping foot 41.

Specifically, the retaining member of the angle adjusting mechanism, the rotation angle adjusting motor, the rotation angle adjusting motor, the driving pulley, the rack member, the driven pulley, and the actuating belt are provided at the double fork extension of the front end of the button gripping foot 41. The button B held by each of the holding members of the button gripping legs 41 can be rotated.

Further, the button gripping foot 41 is attached to the conveying table of the position adjusting mechanism, and the structure of the Y-axis motor, the pinion gear, the linear motion shaft, the bearing, etc., which directly actuates the conveying table, and the swirling around the Z-axis are applied. The structure of the X-axis motor, pinion gear, transport wrist, corner block, etc. of the action can position the button holding position of the button gripping foot 41 at any position on the horizontal plane.

Furthermore, the angle adjustment mechanism and the position adjustment mechanism may perform correction control according to the image captured by the camera 23, and the camera is disposed at the button holding position of the button gripping foot 41, and the photographing information according to the photographing information is used here. It is better to make correction control. In this case, it is advisable to shoot from the same axis as the needle bar. Since the interference with the needle bar occurs, so as to avoid this and as close as possible to the same axis, the camera should be placed in the vertical direction of the optical axis as far as possible. good.

Thereby, it is possible to make the button B more suitable for sewing and the position of the button B more appropriate, and it is possible to perform better sewing, improve the reliability and reliability of the sewing, and shorten the position or angle confirmation or adjustment. The time required for the job is to improve the efficiency of the work.

1. . . Sewing machine with sewing machine

2. . . Button supply device

10. . . Button feeder

11. . . Button replenishment tray

11a. . . Send out

12. . . Delivery department

12a. . . Shaft

12b. . . Hole

12c. . . Rotating part

12d. . . Fixed part

12e. . . Send out

13. . . Rotating plate

13a. . . Shaft

13b. . . Hole

13c. . . Rotating part

13d. . . Fixed part

13e. . . Send out

20. . . Button hole position adjustment section

21,22. . . Button grip wrist

21a, 22a. . . Mounting department

22c. . . Guide hole

twenty three. . . camera

26. . . Solenoid

27. . . Receiving member

28,29. . . Segment screw

30,30A. . . Button transport department

31, 31A, 102. . . Button bearing

32,32A. . . Clip

33,33A. . . Fixed arm

33Aa. . . Airway

34, 34A. . . Upper and lower arm

35. . . Actuator

35a. . . Movable

35b. . . Fixed

36. . . Frame department

37. . . Rotary axis

38. . . Drive department

40. . . Sewing action department

41,101. . . Button gripping foot

41a, 41b. . . claw

41c, 41d. . . Concave

42. . . Needle bar

51. . . Suction port

52. . . First seal

53. . . 2nd seal

101a. . . Claw

102a. . . pin

102b. . . Shaft

110. . . Angle adjustment mechanism

111,112. . . Button retaining member

113,114. . . Rotary angle adjustment motor

115. . . Active pulley

116. . . Rack member

116a. . . Rib

117. . . Drive pulley

117a, 137, 145. . . gear

118. . . Authentic belt

130. . . Position adjustment mechanism

131. . . Wrist mount

132,133. . . Keep the frame up and down

134. . . Conveyor

135. . . Pedestal

136. . . Y-axis motor

138. . . Direct acting shaft

139. . . Sliding guide

140. . . Bearing

141. . . Segment screw

142,150. . . Test piece

143,151. . . Origin sensor

144. . . X-axis motor

146,148,117b. . . Support shaft

147. . . Transport wrist

149. . . Corner block

B, B1. . . Button

P, Q. . . position

Fig. 1 is a perspective view showing the structure of a sewing machine having a button supply device of the present invention.

Fig. 2 is an explanatory view showing the positional relationship between the button gripper of the button feeder, the button gripping arm of the buttonhole position adjusting portion, the button conveying portion, and the button gripping leg.

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

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

Fig. 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 structure of the button conveying portion.

Fig. 7 is an explanatory view showing the structure of the button gripping foot. Fig. 7(a) is a top view of the button gripping foot, and Fig. 7(b) is a side view showing the button gripping foot when viewed from the side where the button conveying portion is provided.

Fig. 8 is an exploded perspective view showing a part of the structure of the button transporting portion of the second embodiment.

Figure 9 is a cross-sectional view showing a part of the structure of the button transporting portion of the second embodiment.

Fig. 10 is an explanatory view showing the structure of a carrier mechanism of the prior art.

Fig. 11 is an explanatory view showing a bearing mechanism of the prior art from a different angle from Fig. 10. Fig. 11(a) shows the state of the button hole of the button insertion portion of the button bearing portion, and Fig. 11(b) shows the state in which the button gripping foot is moved upward with respect to the button bearing portion.

31. . . Button bearing

32. . . Clip

33. . . Fixed arm

34. . . Upper and lower arm

41. . . Button gripping foot

41a. . . claw

41b. . . claw

41c. . . Concave

41d. . . Concave

B. . . Button

Claims (8)

A sewing machine for sewing fasteners, comprising: a sewing action portion, having a button gripping leg, holding the button with a button gripping foot for sewing to the sewing object; and a button feeding mechanism for supplying the button to the button gripping And a button hole position adjusting mechanism for positioning the button to correspond to the direction of the button stitching operation; the button feeding mechanism has a button bearing portion for supporting the button from below, and the button is placed on the button bearing portion Then, the button is fed to the button gripping leg, and the button feeding mechanism holds the button from the up and down direction and then conveys it to the button gripping leg. The sewing machine for a sewing machine according to claim 1, wherein the button supply mechanism has a fixed arm portion that supports the button bearing portion at one end side, and a clip portion that abuts the button from the upper side and is common with the button bearing portion. The upper and lower moving arm portions support the nip portion on one end side, and move up and down; and the driving portion rotates the fixed arm portion and the upper and lower moving arm portions in the horizontal direction. The sewing machine for sewing according to the second aspect of the invention, wherein at least a part of the fixed arm portion and the upper and lower moving arm portions are bent to be fixed as described above The arm portion and the front end portion of the upper and lower moving arm portions are oriented in a moving direction when the button is conveyed to the button gripping leg, so that the button feeding mechanism does not abut the button gripping leg. The sewing machine for sewing according to the second or third aspect of the invention, wherein the button bearing portion has a suction portion for attracting air, and the button is held by the attraction force of the suction portion. The sewing machine for a sewing buckle according to the fourth aspect of the invention, wherein the sewing machine for sewing the sewing machine comprises: a first sealing member that seals a gap between the button bearing portion and the button; and a second sealing member that seals The gap between the clip portion and the button is generated. The sewing machine for sewing according to any one of claims 1 to 3, wherein the button hole position adjusting mechanism has a direction detecting mechanism for detecting a direction of a button around an axis of the button center; and an angle adjusting mechanism And the angle control mechanism drives the driving source of the angle adjusting mechanism according to the direction of the button detected by the direction detecting mechanism, and corresponds to a predetermined direction when the button is stitched. The sewing machine for a sewing machine according to any one of claims 1 to 3, wherein the button hole position adjusting mechanism has: a position detecting mechanism for detecting a positional deviation of a button from a button sewing operation; and a position adjusting mechanism; Actuating the position of the button; and The position control mechanism drives the drive source of the position adjustment mechanism in accordance with the positional deviation of the button detected by the position detecting mechanism. A sewing machine for sewing fasteners, comprising: a sewing action portion, having a button gripping leg, holding the button with a button gripping foot for sewing to the sewing object; and a button feeding mechanism for supplying the button to the button gripping And a button hole position adjusting mechanism for positioning the button to correspond to the direction of the button stitching operation; the button feeding mechanism has a button bearing portion for supporting the button from below, and the button is placed on the button bearing portion Then, the sewing machine is characterized in that the button sewing mechanism has a suction portion that sucks air from under the button bearing portion, and holds the button in the aforementioned attraction force of the suction portion. After the button carrier is placed, it is transported to the button gripping foot.