JPS6146159B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention has a button holding jaw that supports the button parallel to the upper surface of the bed, and moves the button supported by the button holding jaw relative to the sewing machine needle in a direction crossing the vertical movement path of the sewing machine needle. , a button sewing machine in which the button is sewn onto the object to be sewn which is placed on the top surface of the bed, and after forming a predetermined number of stitches, the sewing machine needle comes out of the button and stops; and 2) a button sewing machine in which the button is sewn onto an object to be sewn that is placed on the top surface of the bed, and the sewing machine needle comes out of the button and stops after forming a predetermined number of stitches. A button feeding device that feeds the button out of the container with the front and back facing the same direction inside the container, and a button feeding device that receives the button fed out of the container of the button feeding device at a position away from the button holding jaw of the sewing machine and holds the button of the sewing machine. In a button sewing device equipped with a conveyor conveyed in a jaw, in particular, buttons sent out through a button supply device are surely sent one by one to the conveyor in connection with sewing by a button sewing machine. This invention relates to an individual button feeding device.

Conventionally, this type of device has been designed to run from top to bottom with the front and back sides in the same direction in a passage that slopes up and down and is dammed at the bottom end, as described in the specification and drawings of Japanese Patent Publication No. 39-7087. The button located at the bottom of the buttons arranged in a straight line is pushed sideways by the forward movement of a sliding piece that reciprocates in the direction crossing the passage, and the button is held in the sewing machine through a hole provided in the middle. A mechanism has been proposed in which the button is dropped onto a conveyor that moves back and forth so as to carry the button into the jaw, but according to this method, when the sliding piece pushes the bottom button sideways and then returns, the button will be released. The remaining buttons on the passage fill in the empty space and slide down the slope under their own weight until the next button hits the wall at the bottom of the passage and stops, but the buttons are pushed sideways by the sliding piece. There is nothing in the direction to prevent the button from moving, so the next button hits the bottom of the passage and flies out to the side.
Next, when the sliding piece reciprocates, two buttons, the one that popped out and the next button, are pushed out at the same time, resulting in an accident where those buttons are strongly pinched between the sliding piece and the wall and are damaged. occurs. In addition, in the case of buttons with different diameters, in addition to changing the width of the passage, the stroke of the sliding piece and the size of the hole through which the button pushed out by it falls onto the conveyor should be adjusted to match the button. There are drawbacks such as the need for adjustment, which takes time and effort to set up, and does not improve sewing efficiency.

This invention not only makes it possible to reliably send the next button to be sewn one by one to the conveyor, but also allows the button to be reliably sewn one by one without having to make detailed adjustments each time the button diameter changes. The purpose is to obtain a device that can send out one item at a time.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of the entire automatic button sewing device according to the present invention placed on a table 40. a button loading device B that sets the sewing holes h ₁ and h ₂ of W in the sewing device A while correctly supporting the sewing holes h 1 and h 2 in a specific direction with respect to the vertical movement path of the needle 1;
and a button feeding device C that feeds the button W with its surface facing upward to the button carrying device B. In addition, the sewing device A and the button carrying device B are
It is configured to be screwed to the base 41 at a predetermined location and to maintain compatibility in these positional relationships.

(i) Sewing device A This sewing device A is equipped with a known thread trimming mechanism and wiper mechanism, and, like the sewing machine shown in JP-A-50-72754, is started by a startup operation and the thread is removed after a predetermined number of stitches have been formed. This is a cycle stitch sewing machine of the type in which the cutting mechanism and wiper mechanism operate and the machine stops when the needle 1 comes out of the workpiece placed on the upper surface of the bed 2.The main shaft is rotatably supported on the sewing machine frame. A pulley 5, which is connected via a belt 4 to one pulley 137a of a motor M, which rotates when the power switch SW ₁ is turned on, is loosely fitted into one end of the 3, and a pulley 5 is loosely fitted between the pulley 5 and the main shaft 3. is provided with a clutch mechanism (not shown), the piece 6 of which is arranged to protrude outward from the end face of the main shaft 3 via the elastic force of an elastic body (not shown), and the piece 6 is moved inside the main shaft 3. The main shaft 3 and the pulley 5 are provided so that an interlocking relationship is created by pressing them toward each other. Furthermore, a cam body 7 having a circumferential portion 7a and a notch 7b cut out in the radial direction in the circumferential portion 7a at a position corresponding to the stop of the sewing machine is fixed to the main shaft 3. The cutoff lever 8, which has an arm 8a corresponding to the piece 6 and an arm 8b corresponding to the cam body 7, is supported on a shaft 9 parallel to the main shaft 3, and is always supported by the elastic force of an elastic body (not shown). One end of the arm 8b is brought into pressure contact with the circumferential portion 7a of the cam body 7, and the arm 8a is disengaged from the piece 6, rendering the clutch inactive, and the electromagnetic solenoid SM is energized to move the cutoff lever 8 to the second position. As the arm 8b rotates by a predetermined angle in the clockwise (arrow) direction in the figure, one end of the arm 8b separates from the cam body 7, and the arm 8a presses the piece 6, which causes the clutch to be activated and the main shaft 3 to be connected to the motor M. They are arranged to rotate in conjunction with each other.

On the bed 2 facing the head 11 on which the needle bar 10 is movable up and down, a cloth support 12 and a pair of left and right button holding jaws 13 arranged in the movement path of the needle 1 are arranged as a feed arm 14 and a support arm, respectively. 15
The needle 1 is controlled to alternately pass through the sewing holes h ₁ and h ₂ of the button W held in the button holding jaw 13 by a device such as that shown in Japanese Patent Application Laid-open No. 35-7943, for example. be done. Further, as shown in FIG. 9, the pair of button holding jaws 13 have one of the opposing surfaces 13a and 13b flattened, and the other has a recess 13c equal to the arc of the smallest button among the buttons that can be sewn. so that the button carried in is supported at three points K ₁ , K ₂ , and K ₃ , and the button holding jaw 13 is held at the opposite point as shown in Japanese Patent Publication No. 1983-5830. The surface portion is always brought closer than the diameter of the button W (closed) by the elastic force of an elastic body (not shown).
By moving the stepped screws 17 whose shafts are loosely fitted into the long holes 16 of the support arms 15 to the right in FIG. 2, they move away from each other against the elastic force of the elastic body (opening). ), their opposing surfaces are separated by a distance greater than the diameter of the button W. The adjusting body 18 is rotatable and lockable around the shoulder screw 20 by a shoulder screw 19, and regulates the normal position of the shoulder screw 17 and the normal separation distance of the button holding jaws 13. In order to tilt the sewing device A to the left in FIG.
It has an engaging part 22 that makes surface contact with the support arm 1
The interlocking rod 24 is movable in the longitudinal direction on the right side of the screw 5 and is always moved forward by the elastic force of the elastic body 23. step screw 20
The release lever 21 is connected to one end of an operating rod 26 which is rotatable around the button, and the button holding jaw 13 is opened when the release lever 21 is rotated clockwise in FIG.

Further, the support arm 15 is lowered around the connecting shaft 28 with the feed arm 14 until the lower surface of the button holding jaw 13 comes into contact with the upper surface of the cloth support 12 due to the elastic force of the coil spring 27 compressed between the support arm 15 and the lower surface of the arm 11. , and is raised via a lifting hook 30 by rotating a lifting lever 29 of a button carry-in device B, which will be described later, clockwise in FIG.

The wiper arm 31 is of a known type, and has a hook at the lower end that can engage the needle thread connected to the needle 1 and the object to be sewn, and an L-shaped bent corner that extends downward from the arm 11. After the thread cutting mechanism operates and cuts the thread connected to the seams below the bed 2, the electromagnetic solenoid WM is energized, as shown in Fig. 2. It is provided so that it can rotate in the direction of the arrow and return to its original position upon demagnetization.

(ii) Button carry-in device B This button carry-in device B consists of a conveying means for carrying the button W on its upper surface between the button holding jaws 13 of the sewing device A, and a hole h for sewing the button W on the conveying means. ₁ , _h2 in a specific direction, and individual feeding means for feeding the buttons W one by one between the conveying means and the orienting means, and these are provided on the same drive shaft 33. It is controlled by cam bodies 34, 35, and 36 which are arranged in the same direction. The button carrying device B also incorporates operating means for activating all the devices of the present invention.

FIG. 4 is an exploded perspective view of the individual feeding means;
FIG. 3 is an exploded perspective view of the button carrying device B in which this individual feeding means is omitted. A gear 39 is loosely fitted to the drive shaft 33 supported on the machine frame 37, and meshes with a gear 38 provided on the output shaft of a speed reduction device 63 that operates via a belt 138 that is stretched around the other pulley 137b of the motor M. At the same time, a clutch mechanism 42 is provided between the boss portion of the gear 39 and the drive shaft 33, and the spring 4 is always
The activation lever 44 is rotated clockwise about the shaft 45 by the elastic force of 3, and its free end engages with a piece (not shown) of the clutch mechanism 42, so that the gear 39 and the drive shaft 33 are rotated. Once the interlocking relationship of the clutch mechanism 42 is released and the activation lever 44 is rotated counterclockwise and the activation lever 44 is disengaged from the clutch mechanism 42, the activation lever 44 and the clutch mechanism 42 are disengaged from each other. The drive shaft 33 is connected to the gear 3 until they engage again after one rotation.
9 to rotate counterclockwise. Further, on the outside of the right side wall 37a of the machine frame 37, there is an electromagnetic circuit which is energized for a required set time via switch SW ₂ in connection with stopping the sewing device A or pressing the push button 46, as will be described later. Install the solenoid FM and uncheck it 47
The lower end of the link 49 connects to an arm 48 fixed to a shaft 45.
The starting lever 44 is configured to rotate counterclockwise against the spring 43 when the electromagnetic solenoid FM is energized.

Regarding the transportation means, as shown in Figure 3,
A support shaft 5 supported on the machine frame 37 parallel to the drive shaft 33
A spring 52 is stretched between the first swing lever 51, which has one end rotatably supported by the machine frame 37, and the intermediate roller 53 is pressed against the outer periphery of the feed cam 36 fixed to the drive shaft 33. It is provided so that it is displaced upward from the state shown in FIG. 3 during one rotation and then returned to its original position.

Further, a window 37c is formed in the front part of the left side wall 37b of the machine frame 37, and a shaft 56 with an arm 54 at the upper end and a rotation arm 55 at the lower end is vertically attached to the upper extension of the window 37c. The other end of the first swing lever 51 is connected to the links 57, 58, 5.
It is connected to the arm 54 via 9. The lower half of the winding arm 55 is bent horizontally, and support pins 60a and 60b, which are loosely fitted into the sewing holes _h1 and _h2 of the button W, are vertically provided on the plane of the free end, and the winding arm 55 has a lower half bent horizontally. Even when the arm 55 is threading, the button W can be held horizontally and the sewing holes 60a, 60b are not oriented incorrectly, and the threading radius 55 is as shown in FIG. Due to the change in the cam surface of the feed cam 36, the support pin 60
Once a and 60b cross the passage path of the needle 1 and overrun by 1/2 of the dimensional difference with the diameter of the sewing holes h ₁ and h ₂ of the button W, the passage path of the needle 1 is moved in the opposite (return) direction. Beyond that point, move by 1/2 of the above dimensional difference (return), then move from that position in the button loading direction by a distance shorter than the above dimensional difference, and then stop at that position (after time t ₇ ). It is provided so that it can be moved back in the opposite direction by the elastic force of the spring 52 until it comes into contact with the stopper 140.

Note that the release cam 134 fixed to the drive shaft 33
The same shaft 135 as the release lever 21 corresponds to
The lever 136 supported on the left side wall 37b is rotated in the third clockwise direction at the same time as the button holding jaw 13 is raised immediately after the drive shaft 33 is rotated, and then returned to its original position before the rotation arm 55 is activated. Provided for.

Regarding the orientation means, as shown in FIG.
A rubber cap 61 having a large frictional resistance with the button W is provided at the lower end of the upper projecting part 7c, and the rotating arm 55 returns the rotating body 62 to its original position.
The rotary body 62 is supported vertically opposite to the button mounting portion of the rotary body 62 and rotates in conjunction with a shaft 65 via a belt 64. A shaft 65 supported perpendicularly to the machine frame 37 is provided with a spur gear 66 so as to interlock with the shaft 67 supported on the machine frame 37 in parallel to the drive shaft 33 via bevel gears 68 and 69. The spur gear 66 has one end fixed to the machine frame 37 via a coil spring 70, and the other end fixed to the support shaft 50.
The middle of the timing belt 72 connected to the free end of the second swinging lever 71 supported by the gear 39 is stretched over the middle of the timing belt 72, and the roller 73 provided at the middle of the second swinging lever 71 is always moved by the elastic force of the coil spring 70. While the rotating cam 34 rotates once from the state shown in FIG. Configure it to repeat twice. An elastic free end 75a of a vertical operating arm 75 supported by a shaft 80 on a beam 37d of the machine frame 37 is loosely fitted into a groove 74 formed horizontally in the middle of the rotating body 62, and the vertical operating arm 75 swings. a position where the rubber cap 61 at the lower end comes into pressure contact with the upper surface of the button W sent onto the pins 60a, 60b of the rotation arm 55 from an individual feeding means to be described later;
The rotating body 62 is provided to move up and down so as to move to a position where it does not contact the button W. A coil spring 76 is stretched between the vertical operating arm 75 and the machine frame 37, and a link 78 is connected to the free end of a third swinging lever 77 that supports one end of the vertical operating arm 75 on the support shaft 50. The third swing lever 7 is always connected by the elastic force of the coil spring 76.
A roller 79 provided in the middle of the third
The rotating body 62 is provided so as to rise from the position where it presses against the button W and then return while the vertical cam 35 rotates once from the state shown in the figure.

Regarding the individual feeding means, as shown in FIGS. 4 and 5, a tilting platform 81 is provided with one end supported in a cantilever on the right side wall 37a of the machine frame 37 so that the upper surface is inclined downward toward the rotation arm 55. A rectangular hole 82 is formed in the middle, and a boss 85 of a pair of gutter bodies 84a, 84b forming a guide passage 83 for the button W is loosely fitted therein, and the boss 85 of a pair of gutter bodies 84a, 84b forming a guide passage 83 for the button W is loosely fitted therein. In addition to supporting each gutter body 8
A screw shaft 87 in which threaded portions with different threading directions are screwed into the bosses 85 of 4a and 84b is supported on the inclined table 81, and by rotating it in a desired direction, the opposing surfaces of the gutter bodies 84a and 84b are brought into contact with and separated from each other. , button W
The guide passage 83 is provided so that its width can be adjusted as desired in accordance with the diameter of the guide passage 83. The middle of the shaft 86a is fixed to the gutter body 84a, and the middle of the shaft 86b is fixed to the gutter body 8.
4b, thereby gutter bodies 84a, 84
Even when the guide path 83 is moved, parallelism of the guide passage 83 can be ensured. In addition, a ceiling plate 90 in which cutouts 88 and 89 corresponding to the guide passage 83 are formed in a transparent flat plate and spaced apart in the direction of movement of the buttons W is screwed to one of the gutter bodies 84a, so that the buttons W are arranged in a line in the guide passage 83. It is provided so that it passes in alignment. Further, at the end of a guide passage 83 that corresponds to and extends above the button mounting portion of the rotation arm 55 and extends beyond the free end of the inclined base 81,
A stopper 133 contacts the tip of the button W that has slid down the guide path 83, and a stopper 1
The button W in contact with the button 33 forms an opening 91 from which it can fall vertically, and the opening 91 is opened and closed by a flat plate-like shutter 92 provided at the lower end of the slanted base 81 so as to be horizontally movable as will be described later. Make it possible. A shaft 83 is attached to the back of the tilting table 81.
The swinging ring 94 is supported by the arm 94 and always receives an elastic force in the clockwise direction in FIG. After the vertical operating arm 75 has rotated a predetermined amount clockwise from the state shown in FIG.
The lower end of the swing link 94 touches the shaft 97 and the fourth
It is installed so that it can rotate clockwise as shown in the figure. In addition, a pin 99 eccentrically provided on a shaft 98 supported on the tilting table 81 is swung so that the shutter 92 moves from the state shown in FIG. 5a to the state shown in FIG. Dynamic link arm 94
The free end of a pin 101 provided perpendicularly to the axis of the shaft 98 is loosely fitted into a long hole 102 formed in the shutter 92. The arm 94c of the swing link 94 is an arm 105 supported by a shaft 104 on a vertically installed bearing portion 103.
They are connected to each other via a link 106, and are also connected to each other through a long hole 107 so that the arm 105 does not immediately rotate even if the link 106 moves to the left in FIG.
They are connected by step screws 108 via. Bearing part 10
The shaft 104 protruding from the front side of 3 has a free end 10
The shaft 10
4, the bent end 1 of the first gate 109
09a is provided so as to go in and out of the guide passage 83 of the gutter bodies 84a and 84b. Moreover, the bearing part 103
A second gate is attached to a shaft 110 parallel to the shaft 104 in which a piece 112a supported at one end with the lower end of the rod 111 facing the notch 88 of the ceiling body 90 can be movably locked with a screw 139. 112, and the second gate 112 such that when the first gate 109 rotates counterclockwise from the state shown in FIG. Pin 1 provided
13 formed in the first gate 109
fit loosely into The rod 111 is always pressed downward by the compression spring 115, and when the second gate 112 rotates clockwise to the maximum as shown in FIG. After that, only the second gate 112 rotates in conjunction with the first gate 109 while compressing the spring 115.

Regarding the operation means, as shown in FIG. 3, the above-mentioned lift lever 29 is provided on the outside of the left side wall 37b, and the shaft 1 is supported on the machine frame in parallel with the drive shaft 33.
16, a return cam 11 fixed to the drive shaft 33;
7 and an interlocking rod 1 provided with a roller 119 corresponding to the outer peripheral surface of a starting cam 118 loosely fitted to the drive shaft 33.
The base of the shaft 116 is fixed to the right side wall 37a when the roller 119 is raised to the state shown in FIG. 3 by the return cam 117 and starting cam 118.
The base of the pressing lever 121 is fixed so as to press the switch _S3 which is fixedly arranged at the base of the pressing lever 121. Further, the starting cam 118 receives a force acting counterclockwise in FIG. 3 by a coil spring 122 stretched between it and the machine frame 37, and is loosely fitted to the drive shaft 33 and is connected to a foot pedal (not shown). The actuating lever 123 is rotated clockwise in the figure by depressing the lever.
It is provided so as to rotate against the coil spring 122 via the engagement pin 124 due to the above rotation. Return cam 117, starting cam 118, interlocking rod 120
The relationship between the operating lever 123 and the roller 1 is always
19 rests on the high part of the starting cam 118 as shown in FIG.
The rollers 119 fall from the high part of the starting cam 118 to the low part of the return cam 117 by rotating against the If the starting cam 118 that has climbed onto the high part and released the foot pedal during this time is returned by the spring 122, the drive shaft 33 will further rotate and the roller 119
When it comes off the high part of the return cam 117,
The roller 117 climbs onto the higher part of the starting cam 118 again.

(iii) Button supply device C This button supply device C is
Multiple buttons W similar to those shown in the publication
and a vibration generator 127 that vibrates the bowl 125 through an elastic plate (not shown) by turning on and off the excitation current of the excitation coil 126 through the diode _D1 and variable resistor _R6 . It consists of a vibration generator 1
27, the buttons W in the bowl 125 are sequentially delivered from the front side to the flexible pulp 128 which is stretched over the bowl 125 and the gutter bodies 84a, 84b.

Figures 7 and 8 are electrical circuit diagrams of this invention,
Each of these symbols will be explained below.

SW ₁ to SW ₈ are switches, and switch SW ₅
is pressed by a lever 129 that rotates clockwise in FIG. 2 in conjunction with the return of the cutoff lever 8, and is always maintained in the state shown in FIG. 7. Switch SW ₆
is always open, and is provided to be instantaneously closed by a cam 130 just before the drive shaft 33 completes one revolution from the rest state shown in FIG. Switch SW ₇
can be switched manually when sewing a two-hole button or a four-hole button, and the illustrated state is suitable for sewing a two-hole button. Although the switch _SW8 is not shown in detail, it closes in relation to the end of one stitching cycle of the sewing device A, and when the switch SW7 is adapted to sewing four-hole buttons, it closes until the above-mentioned sewing cycle ends twice. This serves to prevent transistors T ₅ and T ₆ and transistors T ₈ and T ₉ , which will be described later, from becoming conductive. _C1 to _C8 are capacitors,
R ₁ to R ₄ are resistors, R ₅ and R ₆ are variable resistors,
Each of these capacitors and each resistor C ₃ −R ₁ , C ₄
The time constants are determined by −R ₂ , C ₅ −R ₃ , C ₆ −R ₅ , and C ₇ −R ₄ . _T1 to _T10 and
T ₁₄ is an npn type transistor, and T ₁₁ ~
_T13 is a pnp type transistor. _D1 ～ _D10
is a diode, Z ₁ to _{Z 6} are Zener diodes,
_S1 to _S4 are thyristors. Further, 131 is a power transformer, 132 is a rectifier, X, Y, and Z are terminals, and between the terminals X and Z, there is a power transformer 1.
31 is full-wave rectified by a rectifier 132, smoothed by a capacitor _C1 , and current is supplied to the excitation solenoids SM, WM, and FM. In addition, current is supplied between terminals Y and Z to the control circuits of sewing device A and button loading device B by a known constant voltage circuit composed of capacitors C ₁ and C ₂ and a Zener diode Z ₁ . Ru. I to H are the primary input terminals of the power transformer 131, and these are 220V, 220V,
It serves as a connection terminal for 200V, 115V, 100V, and 0V. The excitation circuit of the excitation coil 126 is connected to the input terminals D and _E , and even if the AC voltage input to the power transformer 131 is changed from 200V to 220V or 100V as appropriate in FIG. Provided so that the flowing voltage does not change.

This invention has the above configuration, and its operation will be explained next. First, when the power switch SW ₁ is turned on, the motor M rotates, which causes the pulley 5 of the sewing device A to rotate idly with respect to the main shaft 3, and the gear 3 of the button carrying device B via the deceleration device 63.
9 idles with respect to the drive shaft 33 together with the rotating cam 34, the rotating body 62 is rotated through the first swing lever 71, timing belt 72, shaft 67, and belt 64.
Fig. 5a has been lowered so that it can engage the button W.
Rotate back and forth at the position. Furthermore, since a full-wave rectified and smoothed power supply current is input to terminal _X , and a constant voltage power supply current that has been similarly rectified is _input to _terminal
Charged via SW ₂ , SW ₃ , and SW ₅ .

Next, when the switch SW ₄ (Fig. 8) is turned on, a different current is supplied to the excitation coil every half wave of the commercial frequency via the variable resistor R ₆ and the diode D ₁₁ , and the bowl 125 sets the variable resistor R ₆ . The buttons W vibrate with a strength corresponding to the resistance value, and the buttons W with the front facing up are sent out one after another to the flexible pipe 128, and as shown in FIG.
The buttons are lined up in a line along the guide path 83 of the button carrying device B, and the first preparation stage is completed.

When _the push _{button 46 is pushed in from this state to switch the switch SW 2 from} the state shown in FIG _.
Since the discharge occurs through the thyristor S ₁ and the transistor T ₁₀ , the Zener diode Z ₂ becomes conductive (conduction is turned on and non-conduction is turned off), which turns on the transistor T ₁₁ . Therefore, the transistors T ₈ and T ₉ are turned on via the diode D ₆ only for a time t ₂ determined by the time constants of the resistor R ₄ and the capacitor C ₇ , and the electromagnetic solenoid FM is energized. As a result, the starting lever 44 is rotated in the direction of the arrow in _FIG . Start lever 44
When the clutch 4 returns and the drive shaft 33 rotates once, the clutch 4
2 cuts out and stops, and just before that, switch SW ₆
is closed by the action of cam 130 and transistor T ₁₀ is turned off, so thyristor S ₁ and transistor
T ₁₁ is off. When the drive shaft 33 rotates as described above, the vertical operating arm 75 is rotated upward by the vertical cam 35 and the coil spring 76 via the third swing lever 77, and after being maintained at that position for ₆ hours, returns to the upper position. Therefore, the rotating body 62 rises to a position where it cannot engage with the button W (FIG. 5b) for _t6 hours, and then returns. In addition, the vertical operating arm 75 is rotated clockwise in Fig. 3 (in the fourth direction).
When the link 94 rotates in the direction of the arrow in FIG. 4, the shaft 98 rotates via the pin 99, which causes the shutter 92 to
The arm 105 is moved from the figure a to close the open part 91 as shown in the figure b, and the arm 105 is moved through the link 106 to the fourth
Rotate in the direction of the arrow in the figure. As a result, the first gate 109 rotates counterclockwise from the state shown in FIG. 5a through the shaft 104, and as shown in FIG. 112 connects the first gate 10 via pin 113
9, the lower end of the rod 111 has a bent end 109a.
button △t3 hours before it comes out of notch 89
Since the button W ₂ engages with the upper surface of the button W 2 , only the button W ₁ slides down the guide passage 83 under its own weight by rotating the vertical operating arm 75 clockwise in FIG. 3, thereby blocking the opening 91 first. It is mounted on the shutter 92. Further, while the rotating body 62 is rising, the shutter 92 closes the opening part 91, and during this time, the first swing lever 51 is controlled by the feed cam 36, and the rotation arm 5
5 operates as described below while empty, and after the operation is completed, the vertical operating arm 75 returns against the coil spring 76. Subsequently, contrary to the above, the rotating body 62 descends, the rubber cap 61 comes into pressure contact with the button _W1 shown in _FIG . Since the button W 1 is delayed until it reaches the position shown in FIG. 5A, the button W ₁ is mounted horizontally on the mounting portion of the rotation arm 55 when the sewing holes h ₁ and h ₂ coincide with the support pins 60 a and 60 b. Also, after the rotating body 62 returns to its original position through the elongated hole 107, △t ₂
After a period of time, the arm 105 rotates counterclockwise in FIG. 4, so the first gate 109 and the second gate 112 rotate clockwise and counterclockwise, respectively, from the state shown in FIG. However, after the bent end portion 109a enters the guide passage 83, △
After ₃ hours t, the rod 111 leaves the button _W2 , so that the next button _W2 is blocked by the bent end 109a.

Therefore, in order to initially set the button W in the button holding jaw 13 of the sewing device A, it is necessary to operate the push button 46 twice in succession. That is, when the push button is operated for the second time, since the first button _W1 is set on the rotation arm 55, the shutter 92 is
While the button W2 is blocking the open part 91, the next button _W2 is sent out onto it, and the turning arm 55 reciprocates to carry the button set in the placement part into the button holding jaw 13 from behind. do. In addition, to explain button loading in more detail with reference to FIG. 9, the solid lines in _FIG.
The support pins 60a and 60b are loosely fitted in the center of _h2 , but when the button W is pushed in the direction of the arrow, the frictional resistance between the button W and the side surface 13a of the button holding jaw 13 is If _the frictional resistance is greater than _the frictional _{resistance of} It becomes biased and becomes an adverse factor during suturing. Therefore, the rotation arm 55 of the present invention
, the support pins 60a, 60b extend beyond the passing points 0 ₁ , 0 ₂ of the needle 1, and the diameters of the sewing holes h ₁ , h ₂ and the support pins 60a, 60
After overrunning a distance of _1/2 of the dimensional difference with the diameter of b, as shown by the solid line in _FIG .
Since the button W is returned by 0.01, the button W is slightly rotated in the direction of the arrow in the figure, and the centers of the sewing holes h ₁ and h ₂ are at the passing points 0 _{1 and 0} .
0 ₂ . That is, when the support pins 60a and 60b move to the right from the state shown by the two-dot chain line in FIG. 9b, the right side of the support pin 60b is in contact with the edge of the sewing hole _h2 , is 1/2 the distance from the edge of the sewing hole _h1 by the above-mentioned dimensional difference, so the support pins 60a and 60b are at the passing point 0.
_1,02 and overrun in the opposite direction by _1/2 of the dimensional difference, only one support pin 60b is in contact with the edge of the sewing hole _h2 , and the button W is held in place as shown in FIG. 9C. Rotate in the direction of the arrow. Subsequently, the support pins 60a and 60b are further moved from that position by a distance shorter than the dimensional difference (in the embodiment, 1/2 of the dimensional difference) to the ninth point.
It moves to the left in the figure and returns to its original position after staying at that position _{for t7 hours} .
The lifting lever 29 is slightly moved clockwise in FIG. 3 via the shaft 116, and the button holding jaw 13 is further raised from the remote position on the cloth support 12 against the spring 27, so that the button W is moved upward from the support pin 60a, It is pulled upward from 60b, and all preparations before suturing are completed.

Next, the work to be sewn is placed on the fabric support, the foot pedal is depressed, and the starting cam 118 is rotated clockwise against the spring 122 via the operating lever 123 from the state shown in FIG. The high part is Koro 119
When it comes off, the rising lever 29, the interlocking rod 120,
Since the pressing lever 121 is rotated by the spring 27 via the shaft 116 in the counterclockwise direction in FIG. SW ₃ switches from the state shown in FIG. This allows the capacitor to
Since the current charged in C ₄ discharges and triggers the thyristor S ₂ through the Zener diode Z ₃ to be turned on, the base current of the transistor T ₁ is cut off, until then the current flows through the transistor T through the diode D ₃ . _The current flowing through capacitor _C8
flows into the air and triggers thyristor S ₃ to turn on. Therefore, the transistors T ₂ and T ₃ are turned on, so the electromagnetic solenoid SM is energized, the clutch is engaged, and the sewing device A is operated (main shaft 3 and pulley 5 are interlocked), and the button held in the button holding jaw 13 is closed. Sew W to the material to be sewn. Further, when the link 129 rotates counterclockwise in FIG. 2 in conjunction with the operation of the cutoff lever 8 in the direction in which the clutch is applied, and the switch SW ₅ changes from the state in _FIG. The potential at point P2 decreases, turning off the thyristor _S3 , but the potential at point _P2 also decreases, and the capacitor _C5 discharges through the diode _D4 and switch _SW5 , turning on the transistor _{T12 .} T ₃ does not turn off, ie, the electromagnetic solenoid SM remains on even after switch SW ₂ is toggled for a time t ₁ until the clutch is reliably actuated by the time constant of capacitor C ₅ and resistor R ₃ .

After a predetermined number of stitches have been formed, the thread trimming mechanism is activated, the cutoff lever 8 is returned to its original position, the clutch is disconnected, and the sewing device A is stopped (the interlock between the main shaft 3 and the pulley is cut off), and the lever 129 is also returned to its original position. Switch SW ₅
is in the state shown in Fig. 7 (thyristor S ₃ is on), transistors T ₅ and T ₆ are turned on, and the electromagnetic solenoid WM is energized, thereby moving the wiper arm 31 from the position shown in Fig. 2 to the direction indicated by the arrow. The cut end of the needle thread connected to needle 1 is pulled out onto the workpiece, and capacitor C ₆ and variable resistor
After a predetermined time has elapsed via R ₅ , the capacitor C ₆
is discharged, which turns on the transistor _T4 via the Zener diode _Z4 , turning off the transistors _T5 and _T6 , demagnetizing the electromagnetic solenoid WM, and returning the wiper arm 31. Also, at the same time as the electromagnetic solenoid WM is energized, the switch is activated.
Since the transistors _T8 and _T9 are turned on via _SW7 , the electromagnetic solenoid FM is energized, which activates the button loading device B in the same way as when the push button 46 is pressed, and the sewn button W is activated.
falls from the button holding jaw 13 due to its own weight, and then a new button W is carried into the button holding jaw 13, and at the same time _t2 is passed through the capacitor _C7 and the resistor _R4 .
After a period of time, the capacitor discharges the transistor through the Zener diode _Z4 .
Since T ₇ is turned on, transistors T ₈ and T ₉ are turned off, thereby demagnetizing the electromagnetic solenoid FM. Also, just before button loading device B ends its operation,
In other words, when the drive shaft 33 rotates approximately one rotation, the cam body 1
30 closes the switch SW ₆ , which turns off the transistor _T10 , which turns off the thyristor _S2 and stops the functioning of these electrical systems.

Note that even if the push button 46 is pressed to activate the button loading device B, and the push button 46 is continued to be pressed until after the operation is completed, when the drive shaft 33 rotates once, the switch SW ₆ closes and the transistor T ₁₀ is turned on. Since the thyristor S ₁ is turned off, the transistor T ₁₁ is also turned off, and the capacitor C ₃ is not charged at this time, the button loading device B only operates once and then stops.

Furthermore, even if the switch SW ₃ is switched from the state shown in Fig. 7 to operate the sewing device A, and the push button 46 is pressed by mistake while the sewing device A has not yet stopped, the switch SW ₂ is switched from the state shown in Fig. 7. thyristor
Since _S2 is turned on and the potential at point _P3 is slightly lower than the potential that makes _Z2 conductive, the discharge current of capacitor _C3 flows to point _P3 via diode _D2 and the thyristor
_C1 is not telgered, and therefore, while sewing device A is operating, sewing device B does not operate. This is the same even if the switch SW ₃ is switched from the state shown in FIG. 7 by accidentally depressing the foot pedal while the button carrying device B is operating. That is, since thyristor _S1 is on, the discharge current of capacitor _C4 does not flow to the gate of thyristor _S2 , but flows to point _P4 via diode _D1 .

As described above, in this invention, when the free end of the second locking body moves forward toward the button, the free end of the first locking body engages with the first locking body before the free end of the first locking body comes out of the movement path of the button. The first locking body and the second locking body are engaged with the upper surface of the button adjacent to the button in the direction of movement of the button, and when the button returns, the free end of the first locking body enters the movement path of the button and then separates upward from the top surface of the button. Since the two locking bodies are linked to the operating body and operated in conjunction with each other,
When the free end of the first locking body enters the movement path of the button, it is positioned at the front end of the button at the lowest position to reliably prevent the button from sliding down, and the button is moved. By pulling up from the path, the button at the lowest position can be reliably slid down by its own weight and delivered to the conveyor. Also,
Since the free end of the second locking body is made to engage with the upper surface of the adjacent button while the lowest button is blocked by the first locking body, the second locking body is As long as the free end is in a range that reliably engages with the top surface of the button, there is no need to change the position of the free end of the second locking body facing the top surface of the button even if the diameter of the button is different. Since the time and effort required for setup can be saved, the sewing work efficiency can be improved.

In addition, in the above embodiment of the present invention, the piece 112a supported on the second gate (second locking body) 112
A rod 111 whose lower end faces the notch 88 of the ceiling body 90 is supported substantially perpendicularly to the plane of movement of the button, and the rod 111 is always pressed downward by the elastic force of the compression spring 115. When the rod 111 moves forward of the second gate 112 toward the button, the free end 1 of the first gate (first locking body) 109
The lower end of the rod 111 engages with the upper surface of the button before the actual end 109a passes upward from the button's moving path, and from that point on, the movement of the second gate 112 causes the actual end 109a to move up from the button's moving path. The spring 115 is compressed, and when the second gate 112 returns, the spring 115, which had been compressed until the free end 109a of the first gate 109 enters the movement path of the button, is gradually restored. Although the lower end of the push rod 111 is shown to engage with the button surface, the base of the leaf spring with the free end bent downward is fixed to the second gate 112, and when the second gate 112 moves forward, From the time when the free end of the leaf spring engages with the upper surface of the button until the free end 109a of the first gate comes out of the movement path of the button, the middle of the leaf spring deforms against the elastic acting force, and the free end deforms. Even if the button continues to be engaged with the upper surface of the button, the same effect as described above can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the entire device of this invention, Fig. 2 is a perspective view of sewing device A, Fig. 3 is a perspective view of button carrying device B with some parts omitted, and Fig. 4 is omitted from Fig. 3. Exploded perspective view of parts, Figure 5 is an explanatory diagram of the operation of Figure 4, Figure 6 is a time chart, Figures 7 and 8
The figure is an electric circuit diagram, and FIG. 9 is an explanatory diagram of button loading operation. A is a button sewing machine as a sewing device, B is a button loading device, C is a button feeding device, 13,1
3 is a button holding jaw, 55 is a rotation arm as a conveyor, 83 is a guide passage, 105 is an arm as an operating body, 109 is a first gate as a first locking body,
112 is a second gate serving as a second locking body.

Claims (1)

[Claims] 1. A holding jaw is provided to move a button supported parallel to the upper surface of the bed relative to the needle in a direction intersecting the vertical movement path of the needle, and after a predetermined number of stitches are formed between the buttonholes, the needle is raised from the sewing hole of the button. A sewing machine that stops when the sewing machine stops, and a feeding device that feeds the inside of a vibrating container with the front and back sides in the same direction when multiple buttons are pressed, and feeds the sewing machine out of the container.
a conveying body that reciprocates in relation to the end of a sewing cycle of the sewing machine so as to receive the button fed out from the container of the feeding device at a position away from the holding jaw of the sewing machine and convey it from that position to the holding jaw; A vertically sloping guide path so that the buttons fed from above via the feeding device are aligned from top to bottom toward the conveyor below and slide down by their own weight, and a guide path that is connected to the end of the sewing cycle of the sewing machine. The actuating body reciprocates in synchronization with the conveyor, and the free end enters the button's movement path midway through the guide path and then moves back, allowing it to swing around a fixed straight line in conjunction with the actuating body. A first locking body whose base is supported on the machine frame, and a button whose free end engages with the first locking body are arranged opposite to each other on the top surface of the button next to the rear in the movement direction, and when the first locking body moves forward, the first locking body engages with the first locking body. It continues to engage the top surface of the opposing button even before it comes out of the button's movement path, and when moving forward, the free end of the first locking body enters the button's movement path and then moves upward so that it separates from the top surface of the button. A button sewing device comprising: a second locking body having an elastic acting force in a direction and having a base supported on a machine frame so as to be swingable about a fixed straight line in conjunction with an operating body.