JPS6016267B2 - Cycle sewing machine control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cycle sewing machine such as a button sewing machine, a bar tacking sewing machine, a pattern bar tacking sewing machine, etc.

Conventionally, when sewing a four-hole button B on a workpiece fabric as shown in Fig. 1, with a generally used button sewing machine, group stitches are made between holes 1 in the upper row and holes 2 in the lower row. In order to form the sewing machine, the sewing machine is controlled to perform cycle stitching twice by selectively operating a changeover switch that can select a control means for performing cycle stitching once or twice. Further, as shown in Fig. 2, when attaching a two-hole button B to a workpiece cloth, the changeover switch is turned on and off to control the sewing machine drive so that the sewing machine performs cycle stitching only once. was. On the other hand, if you are attaching four-hole buttons at the same time, one hole between the holes in the upper row
Group stitches must be formed at different points: and between holes 2 in the lower row.

Therefore, when the first cycle sewing is completed, the user operates the vertical feed lever that controls the operation of the vertical feed mechanism that sends the four-hole button B in the vertical direction Y to the next group stitch formation point. The vertical feed mechanism is driven and controlled so as to vertically feed the stitches by the same amount, and after changing the group stitch forming point, cycle stitching is performed again. In the case of button B with two holes, the vertical feed lever is operated so that the vertical feed amount becomes zero, and the vertical feed mechanism is driven and controlled to perform one cycle sewing without changing the group stitch forming point. I was trying to get him to do just that. Therefore, the four-hole and two-hole button sewing operations are performed using a control means that controls the cycle sewing based on the operation of the changeover switch, and a vertical feed amount that is controlled based on the operation of the vertical feed operation lever. This was possible in conjunction with the feed mechanism. However, the operator has to operate one of the changeover switches and the vertical feed lever in conjunction with various buttons B, which is not only very troublesome, but also makes it easy for the operator to make a mistake in the changeover operation. The machine had a defect that could cause it to become uncontrollable or damage the sewing machine.

Therefore, an object of the present invention is to link such a function switch and a vertical feed lever so that when one of them is switched, the other can be switched accordingly.

Hereinafter, one embodiment of a button sewing machine embodying the present invention will be described based on the drawings. Reference numeral 11 denotes a main shaft 1 disposed within the machine frame of a button sewing machine (hereinafter referred to as sewing machine) M.
The pulley is installed on the pulley 11 so as to be freely rotatable and movable in the axial direction thereof, and is connected to a sewing machine driving motor (not shown) via a belt 13 that is hung around the pulley 11. Reference numeral 14 denotes a control disk fixed to the main shaft 12 so as to be arranged in parallel with the pulley 11, and a locking portion 15 having a step is formed on the circumferential surface of the control disk. A clutch mechanism is provided between the pulley 11 and the pulley 11.

Reference numeral 16 denotes a control lever fixed to a support 17 rotatably disposed within the machine frame so as to extend parallel to the main shaft 12, and has a bearing portion 16a at its upper portion, and a control lever at its lower base end. A locking protrusion 16b is formed to protrude.

Reference numeral 18 denotes a locking shaft that passes through the bearing portion 16a of the control lever 16, and a locking piece 19 that contacts the circumferential surface of the control disk 14 is provided at the left end of the locking shaft.
The locking shaft 18 is always biased to the left by a spring 201 interposed between the bearing portions 16a.

A spring 21 has one end fixed to the control lever 16 and the other end fixed to the machine frame of the sewing machine M, and is biased so that the control lever 16 can be rotated counterclockwise, so that the control disk 14 is always The locking piece 19 is pressed against the circumferential surface of the holder. Reference numeral 22 denotes an electromagnetic solenoid disposed on the machine frame of the sewing machine M so that its plunger 23 comes into contact with the locking protrusion 16b of the control lever 16.
When 2 is excited based on the output signal of an electric circuit controlled by the operation of a manual switch such as a pedal P, which will be described later, the plunger 23 protrudes to the left and supports the control lever 16 against the spring 21. It is rotated clockwise together with the shaft 17.

Reference numeral 24 denotes a pressing bar fixed to one end of the support shaft 17, which rotates as the support shaft 17 rotates counterclockwise in FIG. It is moved in the direction of the wisteria line away from the disk 14.

The pulley 11 is then connected to the clutch mechanism from the disengaged state to rotate the main shaft 12. Therefore, solenoid 22
In the demagnetized state, although the pulley 11 is rotating from the outside of the sewing machine drive motor, the locking piece 19 engages with the locking portion 15 of the control disk 14 fixed to the main shaft 12, and the pulley 11 and the clutch mechanism are disengaged, the main shaft 12 does not rotate, and the later-described hand 25 is stopped at the top dead center. However, when the electromagnetic solenoid 22 is energized, the control lever 16 rotates clockwise. The engagement between the locking portion 15 of the disk 14 and the locking piece 19 is released, and the pulley
11 is connected to a clutch mechanism, and the pulley 11 is connected to the main shaft 1.
Rotate 2. Reference numeral 25 denotes a needle that reciprocates up and down once with each rotation of the main shaft 12, and cooperates with a looper 26 built in the base portion Mb of the sewing machine M to form a single thread chain stitch.

Reference numeral 27 denotes a feed plate that slides on the upper surface of the base portion Mb, and has a feed plate 28 attached to its tip, and a vertical feed mechanism (not shown) and a stacking mechanism (not shown) provided in the machine frame. ), it is possible to perform a movement in the vertical direction X and a reciprocating movement in the lateral direction Y.

Reference numeral 29 denotes a button grip holder whose base end is rotatably mounted on the feed base 27 with a shaft 30, and a grip arm 32 for gripping the button B via a button grip silk 31 is attached to the tip. I'm wearing it.

The gripping arm 32 makes similar movements in accordance with the movements of the feed table 27 in the vertical and lateral directions X and Y. Reference numeral 33 denotes an inverted L-shaped power transmission village erected on the upper surface of the button grip holder 29, and 34 is a pressing rod also erected from the upper surface base of the holder 29, which presses the grip arm 32 against the feed plate 28 by a spring 35. I try to let them do it.

As shown in FIG. 4, an eccentric cam 36 is fixed to the main shaft 12, and is in sliding contact with a bifurcated portion 38a of a swinging body 38 fixed to a shaft 37 supported on the thread frame of the sewing machine M. The rotation of this eccentric cam 36 causes the swinging body 38 to
The two-pronged portion 38 of the rocking body 38 is rotated around the shaft 37.
An actuating piece 38b, which is formed by extending horizontally from the outside of one side of a and bending its tip at a right angle, is reciprocated approximately in the vertical direction. Reference numeral 40 denotes a motion axis that is arranged in parallel between the main shaft 12 and the support shaft 17, and in this embodiment makes one rotation for every 16 rotations of the main shaft 12.

Reference numeral 41 denotes a cam fixed to the movement shaft 40, and a recess 4 is formed on the outer peripheral surface of the cam at a position facing the movement shaft 40.
1a and 41b are formed.

Reference numeral 42 denotes an arc-shaped sliding hole bored in the side wall of the cam 41 so that the movement axis extends from the vicinity of the recess 41b; 43 is rotatably attached to the side wall of the cam 41 with a shaft 44; It is a rotating plate in which a bog pin 45 is inserted through the drinking hole 42, and is rotated about the shaft 44 to close or open the recess 41b.

Reference numeral 46 denotes an operating lever fixed to the support shaft 17, and has a lever at its tip that presses against the outer peripheral surface of the cam 41.

47 is rotatably attached.

When the control lever 16 is rotated by the excitation of the electromagnetic solenoid 22, the roller 47 is rotated in the recessed portion of the cam 41 as the operating lever 46 is rotated in all directions counterclockwise.
1a, slides into contact with the outer peripheral surface of the cam 41, and the cam 41
When the main shaft 12 rotates half a rotation (the main shaft 12 has rotated eight times), the iron is inserted into a recess 41b formed at a position facing the recess 41a. At this time, the disk 14 adjusts its relative position so that the locking piece 19 attached to the control lever 16 engages with the locking portion 15 of the control disk 14 fixed to the main shaft 12 with a slight delay. It has been adjusted. 48 is connected to the support shaft 17 so that one end thereof is approximately perpendicular to the operating lever 46.
A connecting link 49 is fixed to the other end of the connecting link 49 at a substantially right angle.

Therefore, the roller 47 attached to the tip of the operating lever 46
When the connecting link 49 leaves the recesses 41a and 41b, the connecting link 49 moves to the right in FIG.
, 41b, it moves to the left and returns to its original position. It is a lotus pestle whose lower end 50' is pivotally connected to the right end of the connecting link 49, and as shown in FIG. When the connecting link 49 moves to the right, it is engaged with the operating piece 38b of the rocking body 38, and is disengaged when the connecting link 49 moves to the right.

The relative positional relationship between the lotus mallet 50 and the rocking body 38 is such that the rollers 47 are inserted into the recesses 41a and 41b, and the actuating piece 38 is
When b engages with the engagement groove 51 of Hasumura 50, the actuating piece 38b
The supporting positions of the eccentric cam 36 fixed to the main shaft 12 and the rocking body 38 are adjusted so that the Hasumura 50 is pushed down and stopped. 52 is a swing link rotatably supported on a fixed shaft 53 of arm part Ma of sewing machine M,
One end is pivotally connected to the upper end of the punch 50 by a ball 54, and the other end is provided with an L-shaped hitting village 55 that engages with a transmission village 33 erected in the button grip holder 29.

Therefore, when the Hasui 50 is pushed down by the operating piece 38b of the swinging body 38, the swinging link 52 rotates counterclockwise in FIG. Lift from the position to the solid line position. Reference numeral 56 denotes a pressing member attached near the lotus pestle 50 of the swinging link 52, which allows the swinging link 52 to move the lever of the operating microswitch MSI provided on the arm Ma in the counterclockwise direction in FIG. It is designed to be pushed when rotated.

Reference numeral 57 denotes a connecting link whose one end is pivotally connected to the pivot shaft 54 between the linkage 60 and the swing link 52, and whose other end is pivotally connected to the support piece 58 fixed to the arm portion Nb' of the sewing machine M. It is pivotally connected by a shaft 60 to the upper end of an L-shaped rotation link 59 attached thereto. Reference numeral 61 denotes an operating link whose one end is rotatably connected to the lower end of the rotary link 59, and its tip is located near the needle hole 62 provided in the throat plate (not shown) on the lower surface of the throat plate (not shown) of the base portion Ma. The movable blade 63 is rotatably supported.

Therefore, when the luck village 50 is lowered, the rotation link 59,
The movable blade 63 is connected to the needle 2 via a transmission mechanism such as the operating link 61.
The needle thread loop is rotated so as to cross the path of the needle 25, and the cloth-side limb of the needle thread loop caught by the looper 26 is connected to a fixed blade (not shown) disposed at an opposing position across the path of the needle 25. Disconnect by conjunction. Reference numeral 64 denotes a mounting frame attached to the outside of the arm N, and houses an electromagnetic solenoid 65 that is excited via an electric circuit described later based on the opening/closing operation of the operating microswitch MSI.

When the solenoid 65 is energized, the plunger 66 is attracted upward against a spring 67. Reference numeral 68 denotes an operating punch whose one end is pivotally connected to the lower end of the plunger 66 with a mari pin 69, and whose other end is rotatable with a screw 71 of a support 701 fixed to the side wall of the tip end of the arm part NG. It is rotatably connected to one end of the supported wiper 72.

Therefore, when the pressing member 56 attached to the swing link 52 presses the operating microswitch MSI, the electromagnetic solenoid 65 is excited by the electric circuit described later, and the plunger 66 is attracted upward, the operating punch 68 The wiper 72 rotates around the screw 71 from the solid line position to the two-dot chain line position shown in FIG. Pull out the cloth K from the top. As shown in FIG. 7, 73 is an L-shaped board attached to the lower back of the arm N of the sewing machine M, and as shown in FIG. is bored so as to face the inside of the arm part Ma of the sewing machine M.

75 is a groove carved in the upper left end of the elongated hole 75 in FIG. 9, and 76 is a group of grooves formed in large numbers at regular intervals from the groove 75, with the grooves being equally spaced. There is.

Reference numeral 77 denotes a vertical feed adjustment lever that passes through the elongated hole 74 and slides inside the elongated hole 74, and a locking protrusion 77a protruding from the upper side thereof is inserted into the groove 75 or the groove group 76. It is supported by being engaged with a desired groove.

By operating this vertical feed adjustment lever 77, the vertical feed mechanism that causes the feed table 27, the pinch arm 32, etc. to perform a vertical feed operation is controlled, and the amount of vertical feed is adjusted. . In this embodiment, when the vertical feed adjustment lever 77 is engaged and supported by the groove 75 at the end, the feed amount is zero, and when it is engaged and supported by a desired groove of the groove group 76, the feed amount is constant. The vertical feed mechanism is operated and controlled so that the amount is generated on the feed table 27 and the gripping arm 32. The amount of feed also increases as the adjusting lever 77 is engaged with the groove on the left side in FIG. MS2 is a switching micro switch fixed to the side surface of the arm portion Ma side of the board 73, and when the vertical feed adjustment lever 77 is moved to a position where it engages with the groove 75 where the feed amount is zero, When the lower surface of the vertical feed adjustment lever 77 presses the lever of the microswitch MS2 and is moved to a position where it engages with the groove group 76, the pressure on the lever of the microswitch MS2 is released and the opening/closing operation is performed. It is supposed to be done.

The opening/closing state of this microswitch MS2 is electrically controlled to drive the vertical feed mechanism for attaching buttons of the sewing machine M in the case of a two-hole or four-hole button, which will be described later. Reference numeral 78 denotes an indicator plate attached to the upper surface of the substrate 73 bent into an L-shape, and indicates which groove of the groove 75 or group of grooves 76 formed in the elongated hole 74 the vertical feed adjustment lever 77 engages with. It is possible to display whether the

Reference numeral 79 is an indicator with a picture of a two-hole button B written on the instruction plate 78, and the vertical feed adjustment lever 77 is aligned with the groove 75.
It is designed to display that it is engaged.

8 River is also an indicator with a picture of button B, which has four holes, and when sewing button B, which has four holes, adjust the bar 7.
7 in all directions, and the vertical feed amount is displayed as a number 81.

Next, the mechanical operation of the sewing machine M configured as described above will be explained.

First, to explain the case of sewing a two-hole button B onto the workpiece cloth K, move the vertical feed adjustment lever 77 to the index 7.
Set it so that it is in position 9.

Then, the drive motor of the sewing machine M is driven to pulley 11.
From the state in which the pedal P is rotated freely, a manual switch such as the pedal P is operated to excite the electromagnetic solenoid 22, disengage the locking piece 19 from the locking portion 15 of the control disk 14, and rotate the main shaft 12. At this time, the support shaft 17 is also rotated by the rotation of the control lever 16, and the operating lever 46 is rotated counterclockwise in FIG. 4. The roller 47 is connected to the recess 4 of the cam 41.
The punch was detached from 1a and rotated freely while pressing the rotating cam 41 surface, while the connecting link 49 was moved to the right in FIG. 50 is disengaged and moves upward.

Along with this upward movement of Hasui 50, the gripping arm 32 that grips the button B in the hole descends and presses the upper surface of the workpiece cloth K that has been placed on the feed plate 28 in advance, and at the same time returns the movable blade 63 to its original position. The operating microswitch MSI is rotated back to the position, and the lever of the operating microswitch MSI, which had been pressed by the pressing member 56 attached to the swing link 52, is released. The main shaft 12 rotates when the engagement of the locking piece 19 is released and the needle 2
5 is reciprocated, and the stacking mechanism is activated to reciprocate in the lateral direction Start sewing between holes 3 of hole button B.
When the needle 25 makes eight reciprocations (the main shaft 12 rotates eight times and the cam 41 rotates half a rotation), the roller 47 irons into the recess 41b and returns to the original left position. 38
b and is pushed downward.

Immediately after being pushed down, the locking piece 1 is inserted into the recess 41b and rotated counterclockwise in FIG.
9 engages with the locking portion 15 of the disc 14, the main shaft 12 stops rotating, the needle 25 is stopped at the top dead center, and button attachment is completed. On the other hand, Renmura 5 Kawama movable blade 6 pushed down
3 to cut the thread, and the swing link 52
in the counterclockwise direction in FIG.
to move up and press the lever of the operating microswitch MSI. And this operating micro switch M
The electromagnetic solenoid 65, whose operation is electrically controlled based on the pressure of the SI lever, is energized for a certain period of time, and the wiper 72 is activated.
is rotated back and forth to pull out the thread cut by the movable blade 63 onto the upper surface of the work cloth K, completing all the button attachment for the two-hole button B, and then attaching the button for the next two-hole button B. Prepare for attachment. Next, attach the four-hole button B to the processed cloth K.
To explain the case where the vertical feed adjustment lever 77 is attached to the index 80, first slide the vertical feed adjustment lever 77 toward the index 80 and set it to the desired value 81.

Then, from a state where the drive motor of the sewing machine M is driven and the pulley 11 is freely rotating, a manual switch such as the pedal P is operated to excite the electromagnetic solenoid 22 and the locking piece 19 is connected to the locking portion 15 of the control disk 14. The engagement is released, the main shaft 12 is rotated, and the holes 1 in the upper row of the four-hole button B are sewn in the same manner as the button B with the two-hole buttons. When the stitching between the upper row of holes is completed, the movable blade 63 similar to the button of the knitting hole cuts the thread, the pinch arm 32 moves upward, the wiper 72 rotates back and forth, and the main shaft 12 temporarily stops. do. Next, the electromagnetic solenoid 22 is energized by the vertical feed adjustment lever 77 without operating the manual switch of the pedal P again in an electric circuit to be described later that operates based on the output of the switching microswitch MS2 which is controlled to open and close. .

On the other hand, the vertical feed mechanism is also operated by the vertical feed adjustment lever 77, and the feed plate 28 and the grip arm 32 are moved in the vertical direction so that the holes 2 in the lower row of the four-hole button B move to the drop point of the needle 25. Move to Y. Then, the main shaft 12 starts rotating again by the excitation of the electromagnetic solenoid 22, performs the sewing operation in the same manner as the sewing operation of the upper row, and completes button attachment.The movable blade 63 cuts the thread, and the knob While the arm 32 is not moving upward, rotate the wiper 72 back and forth to pull the thread out to the top surface of the work cloth K to complete all button attachment for the four-hole button B, and then press the button for the next four-hole button B. Finish with a final note. In the above embodiment, the roller 47 attached to the actuating lever 46 was inserted into the two recesses 41a and 41b so that the number of button stitches was eight. The number of stitches can be reduced to 1 by rotating the attached rotary plate 43 to close one recess 41b so that the roller 47 is inserted only into one recess 41a.

The rotation of the rotating plate 43 may be connected to an operating member that can appropriately select between 8 stitches and 1 imaginary stitch, or may be linked to the vertical feed adjustment lever 77. Next, the electrical circuit that controls the operation of the sewing machine M will be explained based on FIGS. 11 and 12. MS3 is a micro switch for starting a non-contact switch that opens and closes when the pedal P is depressed. It is composed of an element 90 and a magnet 91.

By depressing the pedal P, a high level output is produced, and by releasing the pedal P, a low level output is produced. In this embodiment, the operating microswitch MS1 and the switching microswitch MS
2. Both are composed of a Hall element 90 and a magnet 91. The operating microswitch MSI is at a low level when pressed by the pressing member 56 (when the sewing machine M is not running) and is at a low level when the pressing member 56 is released (when the sewing machine M is not running). )/
・Produces a level output and uses a switching micro switch MS
2 is at a low level when pressed by the vertical feed adjustment lever 77 (when sewing a two-hole button B without vertical feed), and when the pressure is released (when sewing a four-hole button with vertical feed) When sewing B), it outputs a high level output. FF is the starting micro switch MS3
This is a flip-flop that inputs the output of 1 to its set side input terminal via a NOT circuit 92 and a NAND circuit 93, and when a low level output is input from the NAND circuit 93, the set side output changes from low level to /. It is designed to be reversed to the correct level.

Reference numeral 94 denotes a NAND circuit whose input terminal is connected to the set side output terminal of the flip-flop FF, and its output is used for switching to excite the electromagnetic solenoid 22 for rotating the control lever 16 via a NOT circuit 95. It is input to the base terminal of the transistor Trl.

This transistor Trl is connected to the NAND circuit 94.
When outputting a low level output, an input of ./-level is input to the base terminal via the NOT circuit 95 to establish conduction and excite the electromagnetic solenoid 22. 96
is a NOT circuit that inputs the output of the operating microswitch MSI, and the output is connected to the N
It is input to an AND circuit 94.

97 connects the input terminal to the NOT circuit 9 via the contact a.
6, the output of which is shown in Figure 12b.
As shown in Figure 12, after a certain period of time TI after input from low level to high level (see Figure 12a) is input to the input terminal (
In this embodiment, the output is set to fall from high level to low level (in this example, the time is set to be 30 to 100 seconds), and when the input falls from high level to low level, the output immediately goes low. The circuit is configured so that it rises from level to level.

Then, the output is N
It is input to an AND circuit 93. Reference numeral 99 denotes a NANO circuit which inputs the output of the NOT circuit 96 via the contact a and also inputs the output of the delay circuit 97, and its output is a NAND circuit which inputs the output of the flip-flop FF.
It is input to the circuit 94 and is connected via the NOT circuit IQO to the base terminal of a switching transistor Tr2 that excites the electromagnetic solenoid 65 for rotating the wiper 72.

Therefore, this transistor Tr2 becomes conductive when a high level input is input to the base terminal via the NOT circuit 100 based on the low level output from the NAND circuit.
The electromagnetic solenoid 65 is excited to rotate the wiper 72. 101 is a NOT circuit that inputs the output of the switching microswitch MS2; 102 is the NOT circuit 101;
The output of the NAND circuit 99 is input to the other input terminal, and the output of the NAND circuit 99 is connected to contacts c and N.
The signal is input through the OT circuit 103, and its output is input to the reset side input terminal of the flip-flop FF.

104 connects the output of the NOT circuit 101 to the NOT circuit 10
5, and its output is also input to the reset side input terminal of the flip-flop FF.

Reference numeral 106 denotes a delay circuit which receives the output of the NAND circuit 99, and its output is kept constant by inputting an input from a low level to a high level (see FIG. 12c) to its input terminal, as shown in FIG. 12d. After time T2 (200 in this example)
The circuit is configured such that the input signal falls from high level to low level in a time period of 1 sec), and rises from low level to high level immediately when the input falls from high level to low level.

107 is a NAND circuit that receives the outputs of the delay circuit 106, the NAND circuit 99, and the NAND circuit 94 that receives the outputs of the flip-flop FF, respectively;
The output is input to the NAND circuit 104 via the NOT circuit 108.

109 is a set circuit connected to the reset input terminal of the flip-flop FF.

Next, the operation of the electrical circuit configured as described above will be explained.

First, to explain the case of sewing a two-hole button B, the switching micro switch MS2 is pressed to the low level by the super movement operation on the index 79 side of the vertical feed adjustment lever 77, and the operating micro switch MSI is set to the low level. The starting switch M is pressed by the pressing member 56 and is at low level.
Since the pedal P is not depressed, S3 is in a high level state, and the flip-flop FF is in a reset state. Therefore, a high level is input to the input terminal of the NAND circuit 102 by the output of the switching microswitch MS2, and a low level is input to the input terminal of the NAND circuit 104. On the other hand, the input terminals of the respective NAND circuits 94 and 99 receive a level input of /. Also, since the output of the delay circuit 97 is at a low level, the NAN
The high level output of the D circuit 99 is connected to the NAND circuit 94.
At the same time, a low level is input to the input terminal of the NAND circuit 102. Further, the other input terminal of the NAND circuit 93 receives an input from the delay circuit 97 at the level . Then, when the pedal P is depressed to start attaching the button, the output of the starting microswitch MS3 becomes low level, which changes the output of the NAND circuit 93 from high level to low level, and sets the set side output of the next stage flip-flop FF to high level. Flip to level.

As a result, the output of the NAND circuit 94 at the next stage becomes low level, and the switching transistor Trl is made conductive via the NOT circuit 95, and the electromagnetic solenoid 22 is energized, causing the control lever 16 to rotate and the support shaft 17 and rotate the main shaft 12. And the swing link 52
rotates, and the operating microswitch MSI changes from low level to high level, so a low level is input to the NAND circuit 94. Therefore, the switching transistor Trl becomes non-conductive and the electromagnetic solenoid 22 is demagnetized. At this time, the electromagnetic solenoid 22 is demagnetized, but
The roller 47 already attached to the operating lever 46 is inserted into the recess 4.
Since the control lever 16 is detached from 1a and freely rotates on the surface of the cam 41, the control lever 16 is held at the rotated position until the roller 47 is carried into the next recess 41b. Therefore, the main axis 1
2 continues rotation. Further, the output of the delay circuit 97 also becomes a high level state immediately when a low level input is input to the input terminal, and is input to the NAND circuit 99 at the next stage. However, since the output of the NAND circuit 99 inputs a low level to the other input terminal, the state of the /.-level is maintained, and the switching transistor Tr2 is not made conductive via the NOT circuit 100 at this point. . Then, the needle 25, the looper 26, the feed plate 28, and the knob arm 32
When button attachment is completed by the side movement of the button, the cam 41 rotates half a turn, the roller 47 on the operating lever 46 enters the recess 41b, and the output of the operating microswitch MSI changes from a low level to a high level.

As a result, one input terminal of the NAND circuit 99 receives a level input, but the other input terminal receives an input of
The output from the delay circuit 97 does not immediately go to low level even if an input of level /.
The output of the NAND circuit 99 outputs a low-level output because the high-level input is maintained until after I time and a high-level input is input. Then, based on this low level output, the switching transistor Tr2 is made conductive, and the electromagnetic solenoid 65 is excited for the time TI, and the wiper 72 is turned on.
is rotated to pull out the thread cut by the movable blade 63 onto the upper surface of the work cloth K. On the other hand, the output of the NAND circuit 99 is connected to the NAND circuit via the contact c and the NOT circuit 103.
A high level input is input to the ND circuit 102.

As a result, the NAND circuit 102 inputs a low-level output to the reset side input terminal of the next-stage flip-flop FF, thereby putting the same flip-flop FF into a reset state. Then, the operating microswitch MSI is/・
After a time TI from the low level to the low level, the delay circuit 97 becomes low level, and in order to make the output of the NAND circuit 99 high level, the switching transistor T
r2 becomes non-conductive and the electromagnetic solenoid 65 is demagnetized.

Note that the high level output of this NAND circuit 99 is
The ND circuit 94 is input, but the flip-flop F
Since F is in the reset state, the button attachment of the two-hole button B is completed without making the switching transistor Trl conductive, and each circuit returns to its starting state and prepares for the next button attachment. . Next, the four-hole button B
To explain the case where sewing is performed, the vertical feed adjustment lever 77 is moved toward the index 80 side to set the desired number 8.
Set it to position 1 and press the microswitch MS2.
/ Bring it to a level state.

As a result, a low level input is input to the input terminal of the NAND circuit 102, and a low level input is input to the input terminal of the NAND circuit 104, respectively. The state of the other circuits is the same as in the case of attaching a two-hole button. Note that at this time, the output of the delay circuit 106 is at a low level, and a low level input is input to the NAND circuit 104. Then, in order to start sewing between holes 1 in the upper row of the four-hole button B, the pedal P is depressed.

As a result, each circuit is connected to the operating microswitch MS.
The same operation as the two-hole button attachment is performed until I changes from high level to just before low level. Then, when the button attachment between holes 1 in the upper row is completed, the operating microswitch MSI becomes low level. Then, the delay circuit 97 does not go to the low level immediately, but maintains the high level until the TI time as described above, so the switching transistor Tr2 becomes conductive and excites the electromagnetic solenoid 65, rotates the wiper 72, and disconnects it. The thread is pulled out onto the top surface of the fabric. On the other hand, at this time, the low level output of the NAND circuit 99 is NOT
A high level input is input to the NAND circuit 102 via the circuit 103 to invert the flip-flop FF to the reset state. Since a low level input is input to the other input terminal of the NAND circuit 102, the flip-flop FF is not reset.

Therefore, the NAND circuit 99 outputs the output of the delay circuit 97 as /・
When the low level changes from low level to low level, it immediately becomes high level and is input to the NAND circuit 94.
becomes low level, the switching transistor Trl is made conductive again, and the electromagnetic solenoid 22 is excited.
Then, the upper row of holes 1 of the four-hole button B is closed, and the locking piece 19 that is engaged with the control disk 14 fixed to the main shaft 12 is moved upward again to release the engagement, and the main shaft 12 to start sewing between the holes 2 in the lower row. On the other hand, since the output of the delay circuit 106 also maintains a high level output for a time T2 from the time when the NAND circuit 99 rises from a low level to a high level, the output of the next stage NAND circuit 107 changes from a high level to a low level, and the NAND circuit 1
A level input is input to 04, and the next stage flip-flop FF is switched to the switching transistor Tr.
Immediately after l becomes conductive again, it is set to the reset state.

Then, when sewing is started between holes 2 in the lower row of buttons B, except for the reset state of the flip-flop FF,
Each circuit operates in the same manner as the sewing operation in the upper row.

When the stitching between holes 2 in the lower row is completed, the NAN
The output of the D circuit 99 changes from high level to low level,
The electromagnetic solenoid 65 is energized again, the wiper 72 is rotated, and the yarn cut by the movable blade 63 is pulled out onto the upper surface of the work cloth K again. Then, after the TI time, the NAND circuit 99 becomes an output of /. level, and the NAND circuit 94
However, since the flip-flop FF is in a reset state, each circuit returns to its starting state without making the switching transistor Trl conductive again, and the next four-hole button B Completed in preparation for attaching buttons. In this way, when sewing a button B with two holes on the work cloth K, the vertical feed adjustment lever 77 is switched to the mark 79 side, and in the case of a button B with four holes, the vertical feed adjustment lever 77 is moved to the mark 80 side. By simply switching to the side, the switching micro switch MS2 can be opened and closed, and the vertical feed mechanism is also mechanically controlled so that the vertical feed amount is zero or an arbitrary amount. In this case, after sewing hole 3, the sewing operation is completed without performing the sewing operation this time, and in the case of button B with four holes, sewing is completed between hole 1 in the upper row. The rear button B can be vertically fed, and then sewing can be completed between holes 2 in the bottom row, and the mechanical selection operation when sewing two-hole and four-hole buttons B is very easy. It can be simplified to In addition, in the above embodiment, the switching micro switch MS
2 was switched based on the operation of the vertical feed adjustment lever 77, but a lever was provided to directly switch the switching micro switch MS2, and the vertical feed adjustment lever 77 was moved based on the operation of the lever in the parenthesis. The same lever and the vertical feed adjustment lever 77 may be connected at a connecting portion so that the vertical feed adjustment lever 77 can be moved.

As described in detail above, the present invention includes a sewing machine main shaft for vertically moving the needle, and the sewing machine main shaft is rotationally driven based on the temporary operation of an appropriate actuating means to complete the formation of one group stitch. movement control means for stopping the rotation of the main shaft of the sewing machine when the needle is moved; a first feeding operation for forming only one group stitch that is movable relative to the vertical movement path of the needle; After forming one group stitch, there is an actuating member that can perform a second feeding operation to form a second group stitch, and a feeding operation of one of the actuating members. a switching member for switching the operation of the cycle sewing machine, the sewing machine comprising: one or more input switches for activating the actuating means to start driving the cycle sewing machine; and actuation of the input switch. a first drive control circuit for activating the actuating means to form one group stitch based on the operation of the input switch; and after forming one group stitch by activating the actuating means based on the operation of the input switch. Subsequently, a second drive control circuit for activating the actuating means again to form a second group stitch, and one of the first and second drive control circuits is enabled. a drive state switching means for moving the drive state switching means and the switching member body to select a first feeding operation of the operating member; and a movement means for activating the control circuit and activating the second drive control circuit when the second feed operation of the actuating member is selected, so that after forming one group stitch, another group stitch is formed. Sewing in which the next group stitch is continuously formed at a seam forming point and sewing in which the next group stitch is not formed after forming one group stitch are controlled by a drive switching means or a switching unit. By simply switching either one of the two, you can eliminate inadvertent operation errors, prevent sewing control such as attaching buttons, or damage the sewing machine. It can be simplified and work efficiency can be improved, and it has excellent industrial effects as a control device for cycle sewing machines.

[Brief explanation of the drawing]

Figure 1 is a front view of a four-hole button to explain the button sewing order of a button sewing machine according to an embodiment of the present invention, Figure 2 is a front view of a two-hole button, and Figure 3 is a front view of a button with two holes. Fig. 4 is a left side view of the button sewing machine, Fig. 5 is a front view of the button sewing machine, Fig. 6 is an enlarged left side view of the main parts, Figs. Figures 9 and 10 are explanatory diagrams of the vertical feed adjustment lever provided on the back side wall of the button sewing machine, Figure 11 is an electric control circuit diagram of the control device of the button sewing machine, and Figure 12 is the main part of the electric control circuit. It is a time chart figure. Main shaft...12, control lever...16,
Locking piece...19, Electromagnetic solenoid...22
, Vertical feed adjustment lever 77, NAND circuit
...93,94,99,102,104, Delay circuit ...97,106, Micro switch for operation...
...MS1, switching micro switch...MS2,
Starting micro switch...MS3, flip-flop...FF, switching transistor...Trl, pedal...P, button sewing machine...M. Figure 1 Figure 2 Figure 3 Figure 4 Tsuyoshi Figure 5 Figure 6 *7 Figure 8 Figure 9 Key 10 Figure 11 Figure 12

Claims (1)

[Scope of Claims] 1. A sewing machine main shaft for vertically moving the needle, etc., and when the sewing machine main shaft is rotationally driven based on the temporary operation of an appropriate actuating means and the formation of one group stitch is completed. a movement control means for stopping the rotation of the main shaft of the sewing machine; a first feeding operation for forming only one group stitch that can move relative to the vertical movement path of the needle; After forming a stitch, an actuating member body capable of performing a second feeding operation to subsequently form a second group stitch, and a mechanism capable of performing a feeding operation of one of the operating member members. and a switching unit for switching the operation of the cycle sewing machine, the sewing machine having one or more input switches for starting the drive of the cycle sewing machine that has activated the actuating means, and a switching unit for switching the operation of the input switch. a first drive control circuit for activating the actuating means based on the operation of the input switch to form one group stitch; Subsequently, the activation means is activated again to enable a second drive control circuit for forming a second group stitch, and one of the first and second drive control circuits. a drive state switching means for the operation, the drive state switching means and the switching member are interlocked to enable a first drive control circuit when the first feeding operation of the operating member is selected; A control device for a cycle sewing machine, comprising interlocking means for activating a second drive control circuit when a second feed operation is selected. 2. The control device for a cycle sewing machine according to claim 1, wherein the interlocking means is configured to perform the switching operation of the drive state switching means based on the switching operation of the switching member. 3. The cycle sewing machine is a button sewing machine, the operating member includes a button gripping device for moving the button relative to the needle, and the switching member is configured to adjust the button depending on whether the button is a two-hole button or a four-hole button. Claim 1 including a manual switching lever for switching the movement of the gripping tool
A control device for a cycle sewing machine according to item 1 or 2. 4. The input switch includes one manual switch, and the drive state switching means includes a drive state switching circuit,
Claim 1, wherein the activated drive control circuit is activated by the manual switch.
The control device for a cycle sewing machine according to item 2 or 3.