JPS6124038B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fabric stacking device for orderly stacking fabrics that have been sewn by a predetermined machine at a location away from a workbench, and in particular, for stacking fabrics that have been sewn by a predetermined machine in an orderly manner in a place away from a workbench. The present invention relates to a fabric loading device for a sewing machine that applies predetermined stitches at a plurality of different locations on a straight line of fabric.

Conventionally, this type of device has been configured such that a preset number of stitches is counted, and a loading device is activated in connection with the completion of the sewing operation for the number of stitches. For this reason, if the same location is sewn twice due to a sewing defect, the number of sewing operations of the sewing machine will be one more than for the location where the specified stitching has been performed. However, there were disadvantages in that the sewing machine operated unexpectedly, and the loading device did not operate when all the planned areas had been sewn.

This invention aims to eliminate the above-mentioned conventional drawbacks.

Embodiments of the present invention will be described below with reference to the drawings.
The embodiment shown in FIG. 1 relates to a sewing device for sewing buttons X onto a placket (hereinafter referred to as cloth) W of clothing such as a dress shirt.

(1) About the mechanical part This device consists of a cycle sewing machine A for button sewing fixedly placed in the middle of the horizontal upper surface of the workbench 1, and a button X that sorts the front and back sides of buttons X and sends out only buttons X whose front and back sides are in the specified direction. a button feeding device B that transports the button X sent from the button feeding device B to the button holder 2 of the cycle sewing machine A; A sewing detection device D for checking whether the button has been worn, a cloth transport mechanism E for transporting the cloth W so that the next button sewing part matches the sewing machine sewing part, and a sewing machine for sewing all the planned number of buttons X. It consists of a carry-out device F for carrying out the worn cloth W from the sewing machine sewing section, and a stacker G for stacking the cloth W carried out by the carry-out device F in an orderly manner at a place away from the workbench 1.

In cycle sewing machine A, an electromagnetic solenoid (starting Mg) 8 is energized in response to a start signal to release the mechanical restraint of the sewing machine main shaft, and the sewing machine motor (not shown), which is constantly rotating, is activated when the power is turned on. ), the clutch mechanism is set to the operating position so as to transmit the movement of the sewing machine to the sewing machine main shaft.
The sewing operation is started (the cutoff switch shown in the figure is turned off), and after a predetermined number of stitches have been formed, the thread trimming mechanism and wiper mechanism (not shown) are activated, and then the clutch mechanism is returned to the non-operating position (the cutoff switch is turned off). This is a known button sewing machine (hereinafter referred to as the "sewing machine") that stops when the needle bar 4 is turned on) and the needle bar 4 is raised to its highest position.

The button supply device B includes a container 5 that accommodates a plurality of buttons X, and a vibration generator 6 that vibrates the container 5, similar to that shown in Japanese Utility Model Publication No. 11825/1983.
For example, a button with the front facing upward
Only the flexible pipe 7 is sent out sequentially in a line.

The button loading device C has a means for taking out the buttons X sent out from the button supplying device B one by one each time the sewing operation of the sewing machine A is completed, and a means for specifying the direction of the sewing hole of the button X taken out by this means. It consists of a means for supporting the button X in the direction, and a means for transporting the button X so as to be held in the holding part 2 of the sewing machine A.

The relationship between the sewing machine A, the button feeding device B, and the button carrying device C is the same as that described in Japanese Patent Application Laid-Open No. 123356/1982, so please refer to the above publication for details.

The sewing detection device D has the configuration shown in FIGS. 1 and 3. That is, at the right end of the sewing machine A, the upper part of the swing arm 8 is rotatably supported around a horizontal shaft part 9, and the piston rod of an air cylinder 11 is rotatably supported on the machine frame by a horizontal shaft 10. 12 and the middle of the above-mentioned swing arm 8 are rotatably connected, and the air cylinder 1
The rotating arm 8 is provided so as to be rotated by a predetermined angle in the clockwise direction by the action of 1, and counterclockwise by the non-action. A shaft 13 disposed horizontally at the lower part of the swing path 8 is rotatable within a certain angle by a V-shaped notch 14 formed therein and a pin 15 protruding from the swing arm 8. The acting force of the coil spring 16 is always applied in a clockwise direction. A detecting piece 17 is fixed to one end of this shaft 18 in correspondence with the sewing machine sewing part, and a pressing piece 19 is fixed to the other end corresponding to a sewing detection switch 18 disposed on the machine frame.

These relationships are always in the state shown by the solid line in FIG. 4, and when the swing arm 8 rotates clockwise due to the action of the air cylinder 11, the button
If the detection piece 1 is sewn on, the detection piece 1 will be removed during its rotation.
7 engages with the stitching thread as shown by the two-dot chain line in the same figure, and is prevented from moving further, so that the detection piece 17 and the pressing piece 19 are subsequently rotated by the rotation arm 8.
rotates counterclockwise relative to the rotating arm 8 against the coil spring 16 as shown by the solid line in FIG. 5. In this case, the sewing detection switch 18 is not turned on and the button If not, the detection piece 17 and the pressing piece 19 rotate together with the rotating arm 8 as shown by the two-dot chain line in FIG.
8 is turned on.

The cloth transfer mechanism E has the configuration shown in FIG. That is, below the workbench 1 on the left half in FIG.
0 and 21 are arranged rotatably, one sprocket 21 is linked to a stepping motor (hereinafter referred to as motor) 22, and both sprockets 2
An endless timing belt 28 is placed around the belts 0 and 21. The guide shafts 24, 25, and 26 are horizontally fixedly arranged parallel to each other over almost the entire length of the workbench 1, and the guide shaft 24 has a first carriage 27 and a second carriage 2.
8 so as to be slidable in its axial direction,
Both carriages 27 and 28 are connected via a connecting rod 29 and a set screw 30 so that the distance between them can be changed and fixed as desired. These carriages 27, 28
As shown in FIG. 1, the free ends of the support arms 331, 32 extend upward from the rear of the workbench 1, and the piston rods 33, 34, which serve as presser feet, are lowered onto the extending portions 31a, 32a. position and fix the air cylinders (presser foot CYL) 35 and 36. Further, the cloth support 37 is fixed to the support arm 31 so as to face the piston rod 33 and its upper surface is flush with the upper surface of the workbench 1, and by the action of the cloth presser foot CYL35,
The fabric W placed on the workbench 1 is held between these, and the fabric W is released when the fabric presser foot CYL35 is inactive. On the right side of the sewing machine A on the workbench 1, facing the piston rod 34, there are a plurality of holes 38a on the upper surface.
A hollow suction body 38 is formed through the suction body 38 and its base is connected to a constantly operating suction pump, which is fixedly arranged so that its upper surface is flush with the upper surface of the workbench 1, and the cloth W is set at the sewing position on the workbench 1. At the same time, the presser foot CYL36
The cloth W is provided so as to be pressed against the upper surface of the suction body 38 by the lower end of the piston rod 34. In addition, 3
9, 40 and 41, 42 are rollers rotatably supported by the support arms 31 and 32, and the guide rods 25,
26 to reliably prevent the support arms 31, 32 from rotating.

In addition, the first carriage 27 has dogs 46, 47 corresponding to a deceleration switch 43, a home position switch 44, and an overrun prevention switch 45 fixedly arranged.
48, which are arranged so that when the first carriage 27 moves to the right, the dog 46 first turns on the deceleration switch 48, then the dog 47 turns on the origin switch, and then the dog 48 turns on the switch 45. to relate to.

As shown in FIGS. 1 and 2, the unloading device F includes pulleys 51 and 52 that are rotatable on an arm 50 that is rotatably supported on a support frame 49, an endless belt 53 that is stretched around them, and a pulley 51. , 52, and an air cylinder 55 that rotates the arm 50. When the air cylinder 55 is inactive, the lower side of the endless belt 58 is pressed against the upper surface of the workbench 1 by its own weight. Further, the arm 50 is rotated by the action of the air cylinder 55 so that the endless belt 53 floats above the upper surface of the workbench 1.

As shown in FIG.
It consists of a transfer body 57 for transferring to and an air cylinder (stacker CYL) 58 for operating the transfer body 57. The pedestal 56 supports the support frame 59 so that it can move up and down and lock. The transfer body 67 has its lower end attached to the support frame 5.
A hollow pipe 61 is horizontally supported rotatably on the pipe 9 and has a plurality of air blowing holes 60 at its upper end and connected to a blower at its base. Further, the transfer body 57 rotates counterclockwise from the state shown in FIG. 1 as shown in FIG. 2 due to the action of the stacker CYL, and returns to its original state due to no action.

Regarding the workbench 1, as shown in FIGS. 1 and 2, the abutment plates 62 and 63 that regulate the position of the fabric W along the transfer direction are moved on both sides of the sewing machine A in a direction perpendicular to the fabric transfer direction. Furthermore, an indicator piece 64 for indicating the position of the front end of the cloth W in the transport direction is provided on the backing plate 62 so as to be movable and lockable in the cloth transport direction. At the rear right side of workbench 1 is a push button (start button) for starting the sequence of the sewing device.
SW) 55 and an operation box 66 for setting and displaying other electrical system settings are provided.

About the operation box In Fig. 7, 67 is an input key group consisting of 15 push buttons (keys) arranged in 3 columns vertically and 5 columns horizontally. This is for selecting the distance and each mode of - displayed on the sign 68. In addition,
"Mode" refers to the combination of sewing intervals for each button X. For example, button
In the case of sewing in order from the left in the manner shown in Figure 0, only the final button spacing (b dimension) is different from the other button spacings (2 dimensions), so the mode is set as "" as shown in the sign 68. On the other hand, when only the first button spacing (dimension a) is different, the mode is "", and when all the button spacings are equal, the mode is "". 69 to 73 are display windows, window 6
9 displays the transfer distance (dimension a) for mode a, and window 70 displays mode B.
The transfer distance (B dimension) corresponding to
In the window 72, when an accident such as thread breakage or button sewing error occurs, the number or code set in advance in response to each accident is displayed in the window 72.
3 displays the number of completed sewing items. 74-7
8 is a dial, the dial 74 is for setting the driving time (T ₁ in Fig. 8) of the motor 54 of the unloading device F, and the dial 75 below is for setting the driving time of the motor 54 of the unloading device F.
8 operation delay time (Fig. 8 T ₂ ), dial 76
is the operating time of Stadka CYL58 (T ₃ in Figure 8),
The dial 77 is the delay time (8th
The dial 78 sets the blower time (T ₅ in FIG. 8) _, respectively. 79 to 87 are push buttons, and 79 to 81 and 85 are of the type that alternately turn on and off the corresponding switch each time they are pressed, and the others turn on the corresponding switch only while being pressed. It is of the model type. The push button 79 allows selection of whether or not to operate the stacker G in the sequence of this sewing device, and the push button 80 allows selection of whether to operate the sewing device automatically according to the sequence or to operate each element individually. In manual operation, the push button 81 activates or deactivates the presser foot CYL35, the push button 82 activates or stops the sewing machine A, and the push button 83 activates the fabric transfer mechanism E. The push button 84 enables the cloth transfer mechanism E to generate a command for returning the cloth W to the origin position corresponding to the origin switch 44, respectively. Also push button 85
It is possible to select whether the length of the above-mentioned transfer in manual operation is set to "a dimension" or "b dimension" in mode ~. The push button 86 is used to release the electrically inhibited state caused by the incorrect operation of the input key 67. For example, when the mode is selected with the "" key of the input key group 67, and the start SW 65 is turned on without setting either "a dimension" or "b dimension", or the above "a dimension", "B size"
If the setting is outside the range of 50 mm to 150 mm, the electrical system will be prohibited, but this prohibited condition can be canceled by pressing this push button 86. Last push button 87
This is due to poor button sewing (sewing detection SW18 is turned on) or overrun of the cloth transfer mechanism E (switch 4 is turned on).
This is to cancel a sequence interruption caused by an accident such as a thread breakage (not shown, but the generation of a detection signal by a thread breakage detector), etc. do.
Reference numerals 83 to 89 are lamps, and the lamp 88 lights up along with the error mode display in the window 72 when an error occurs such as an input key operation error, button sewing failure, cloth transfer mechanism E overrun, thread breakage, etc., and the lamp 89 lights up automatically. Lights up during operation.

About the control circuit As shown in Figure 11, the central processing unit CPU
(hereinafter referred to as CPU) and static storage device ROM (hereinafter referred to as CPU) and static storage device ROM (hereinafter referred to as CPU)
A microcomputer (hereinafter referred to as a microcomputer) consisting of a ROM (hereinafter referred to as ROM) and a dynamic storage device RAM (hereinafter referred to as RAM) with a battery backup so that the memory contents are retained even when the power is turned off.
The input section 90 of the MC includes a sewing detection SW 18 and a deceleration SW.
43, Origin SW44, Overrun SW45, Key SW (67), Dial SW (74~7
8), the push buttons SW (79 to 87) and the start SW 65 are connected to the output section 91 of the microcomputer MC, and the electromagnetic solenoid 3 that starts the sewing machine A and the motor that moves the cloth transfer mechanism E are connected to the output section 91 of the microcomputer MC. 22, and air cylinders 11, 35, 36, 5
8, the suction body 38, and the electromagnetic pipe group 92 corresponding to each of the pipes 61, and the display light emitting diode group 93 and lamps 88, 89 corresponding to the windows 69 to 73.
Connect.

The present invention has the above-mentioned hardware configuration.Next, the software configuration inside the microcomputer MC will be explained along with its operation.

About the main routine In Figures 12 and 13, when the power is turned on, initialization is performed, and the fabric transfer mechanism E
Are the carriages 27 and 28 returned to their origin?
An initial position search is performed to check whether the clutch mechanism of sewing machine A has returned to its inactive state, and as a result, the carriage 2
9 is at the initial position and the origin switch 44 is turned on, inputs from the input key group 97 can be read (FIG. 14). Therefore, if "manual operation" is selected by the push button 80, the flow shown in FIG. 17 is executed, and if "automatic operation" is selected, the following flow is executed.

Automatic operation When the start SW 65 is turned on, the input of the key 67 is prohibited. At the same time, it is determined whether the start conditions are met by the initial position search, and if the conditions are not met, the lamp 88 is lit and input/output is prohibited. Then, if you remove the cause of the accident and turn on start SW65 again, presser foot CYL3 will start.
The valves 92 corresponding to 5 and 36 open and the presser foot 3
3 and 34 descend to press the cloth W placed on the workbench 1 against the upper surface of the cloth support 37 and the suction body 38. next
T Startup Mg3 is turned on after ₆ hours delay, and after button
When the SW is turned on, a predetermined valve 92 is opened, the detection CYL 11 is activated, and the swing arm 8 is rotated clockwise from the position shown by the solid line in FIG. 4 to the position shown in FIG. 5.
As a result, if the button Transport. Also, in connection with the completion of the transfer of the cloth W, the start Mg8 is turned on again.
The same action is repeated thereafter.

When sewing machine A stops after sewing the last button X, the number of cloth transfers in this case is "0", so
After the presser feet 33 and 34 are raised, the motor 22 is reversely rotated to move the cloth transfer mechanism E to the right in FIG. 1 (return to the origin) until the origin SW 44 is turned on.

In parallel with this, the detection CYL11 is turned on, and if the button W is sewn, the unloading motor 54 is rotated under the condition that the stacker SW79 is turned on, and at the same time the cylinder 55 is activated to lower the unloading device F for T ₁ hour, and then After a delay of T ₂ hours from the action of the cylinder 55, the stacker CYL 58 acts for T ₃ hours and the transfer body 57
is rotated counterclockwise as shown in FIG. 2, thereby causing the cloth W to hang down from the left edge of the workbench 1, and then its upper portion is held between the pipe 61 and the pedestal 56. In addition, the blower operates after T ₄ hours have elapsed since the action of Statuka CYL58, and the hole 6 of the pipe 61
Air is blown from 0 and the cloth W is straddled over the pipe 61.
are stacked upside down on the pedestal 56, and one cycle is completed.

Reading of input keys Reading of input keys is performed according to the flow shown in FIG. For example, if five buttons "a", "1", "0",
Press "0", "b", "1", "5", "0" in order,
In this case, the number of times the cloth is fed is 4, and the mode types start from display 68, so the keys "4" and ""
If you press , the above information will be written to RAM. Furthermore, if a key operation is performed again after this key operation, the previous information is erased and the information of the subsequent operation is newly written to the RAM. For example, after the above key operation, press the keys "a", "1", "1", "0",
If you press ``5'' and ``1'', the information recorded in the ROM will be ``A dimension is 110 mm'', ``Number of cloth feeds is 5 times'', and ``Mode is''.

Also, if the a and b dimensions are set to less than 49 mm or more than 151 mm, an error will occur and the error lamp 88
lights up, an error mode is displayed on the window 72, and input/output is prohibited at the same time. In this case, if the release button 86 is pressed, the prohibition of input/output is lifted and new input operations become possible.

Improper button sewing As mentioned above, if the button X is not sewn, the pressing piece 19 is
rotates together with the rotating arm 8 to turn on the sewing detection SW 18. As a result, as shown in FIG. 16, the error lamp 88 lights up and the error mode is set to the window 72.
is displayed, and the sequence operation stops at that point. In this case, if the restart SW 87 is turned on, the sewing operation of sewing machine A and the subsequent sequences are restarted.

Cloth Transfer (Index) As shown in Figure 15, in the case of mode ``'', it is determined whether the cloth transfer is the first time from the set transfer circuit, and the a dimension is normally fed at the first transfer. , During subsequent transfers, the b dimension is forwarded normally. In the case of mode "", normal feed of dimension a is performed in all cases, and in the case of mode "", it is determined whether the transfer is the set number of times, and when the transfer is other than the set number of times, normal feed of dimension a is performed, During the set number of transfers, normal feed of dimension b is performed. In addition, in any mode, "1" is subtracted from the set number of times each time the cloth W is transferred, and if the value is "0", as described in "(V) About automatic operation", The motor 22 is reversed to reverse the cloth transport mechanism E and decelerate.
When SW43 is turned on, the motor 22 is decelerated below the self-starting frequency, and when origin SW44 is turned on, it is stopped.

Manual Operation When the manual operation mode is selected by the push button 80, the ON signal of the start SW 65 is prohibited. Therefore, if each input is set in advance to perform button sewing as shown in FIG. 10 by operating the input key group 67, then
When SW) 84 is pressed, cloth transfer of dimension a starts. If push button 84 is released before the first transfer is finished, the first transfer of dimension a is finished and stopped, and if push button 84 is pressed again, dimension a is transferred. The cloth transfer is repeated,
It stops after feeding the dimension corresponding to the number of transfers when the push button 84 is released, and if the push button 84 is continued to be pressed, it repeats the a dimension feeding four times and then finishes feeding the b dimension and stops. Next, if the push button (origin return SW) 83 is pressed from this state, the motor 22 is reversed and the cloth transfer mechanism E is returned to the initial position.

As described above, the present invention provides a fabric loading system for a sewing device that alternately repeats the sewing machine sewing operation and the movement of the fabric transport mechanism multiple times so as to apply predetermined stitches at a plurality of different locations on a straight line of fabric. The device includes a setting means that can set the number of times the cloth transport mechanism moves, and a control device that operates the loading device in connection with the end of the sewing machine sewing operation after the cloth transport mechanism has moved the number of times set by the setting means. With this configuration, it is possible to load only the cloth that has been completely sewn in a predetermined manner at a place away from the workbench, and in particular, the cloth loading device can be operated in relation to the number of cloth transfers set by the setting means. For example, if a sewing defect occurs and the transfer of the fabric is prohibited and the same area is sewn again, the fabric loading device will operate only when all the specified sewing is completed, and the loading device will Since the sewing machine does not operate unexpectedly, it is excellent in safety, and it also has the advantage of being able to reliably take out only the fabric that has been sewn from the workbench and stack it.

In addition, in this embodiment, modes "" to "" consisting of a combination of "a dimension" and "b dimension" are shown, but the mode is not limited to this, and three or more types of modes consisting of other combinations can be set. You may also do so.

Further, in this embodiment, a button sewing machine has been described, but the present invention may be applied to a buttonhole sewing machine or other cycle sewing machines that sew sew-on, label, etc. When applied to a buttonhole overlock sewing machine, as shown in Fig. 8, at the same time as the start Mg3 of sewing machine A is turned on,
Cloth loosening CYL that works while the sewing machine is running
is horizontally fixed to the second carriage 28 in Fig. 6, and the support arm 32 is fixed to the piston rod thereof, and the cloth presser CYL36 is moved to the sixth position by the action of the cloth loosening CYL.
The sewing machine is configured to move a predetermined distance to the left in the figure to give the fabric the slack necessary to perform buttonhole stitching.

Further, in this embodiment, the sewing detection SW 18 is fixedly arranged in the frame and the detection SW 18 is turned on when the button is not sewn, but as shown in FIG. At the same time, a pressing piece 19a corresponding to the detection SW 18a and a detection piece 17 corresponding to the button are fixed to the shaft 18a.
If the button a is fixed and the button is not sewn, the detection piece 17a rotates together with the rotating arm 8a for detection.
If the SW 18a is not turned on and the button is sewn, the detection piece 17a engages with the sewing thread of the button and then moves clockwise relative to the rotating arm, thereby causing the pressing piece 19a to switch to the detection SW 18a. It may be configured to turn on.

Furthermore, in this embodiment, button sewing is detected before the fabric is transferred, and if a button is sewn, the fabric is transferred so that the next button sewing area is aligned with the sewing machine sewing area. However, it is also possible to transfer the cloth after the sewing machine is finished and before detecting whether the button has been sewn, and to detect whether the button has been sewn while the cloth is being transferred. That is, as shown in FIG. 19, a known microswitch 95 is fixedly arranged on the workbench 1, and the free end of its actuator arm 96 is arranged on the movement path of the button due to cloth transfer.
If the button Configure the startup Mg3 to turn on again.

Further, in this embodiment, a stepping motor is used as the drive source for the cloth transfer mechanism E, but a servo motor or other appropriate motor may be used.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view, Fig. 2 is a perspective view of the main parts of the workbench, Fig. 3 is a perspective view of the sewing detection device,
Fig. 5 is an explanatory diagram of the operation of the sewing detection device, Fig. 6 is a perspective view of the main parts of the cloth transfer mechanism, Fig. 7 is a front view of the operation panel, Fig. 8 is a time chart of automatic operation, and Fig. 9
The figure is a time chart of manual operation, Figure 10 is a perspective view of the sewn product, Figure 11 is a block diagram of the electric circuit,
Figures 12 to 17 are flowcharts, Figure 18
This figure and FIG. 19 show other embodiments of the sewing detection device. A... Sewing machine, CPU... Control device, E... Cloth transfer mechanism, 67... Setting means, G... Loading device.

Claims (1)

[Scope of Claims] 1 Sewing machine A that is fixedly arranged on the horizontal surface of a workbench, operates in response to a start signal, and stops after forming a predetermined number of stitches, and a button that holds the sewing machine in connection with stopping the sewing machine. A carry-in device C operates to carry the button into section 2, and a carry-in device C operates in connection with stopping the sewing machine to determine the sewing state of the button and generates a sewing signal when the sewing is sufficient and generates a sewing signal when the sewing is insufficient. A sewing detecting device D that generates sewing signals and a cloth presser foot that can move up and down to hold and release the cloth placed on the top of the workbench are placed at two separate positions sandwiching the sewing machine. The fabric transfer mechanism E is provided with a fabric transfer mechanism E that can be moved parallel to the top surface of the workbench in the direction of separation in relation to the generation of the fabric transfer mechanism, and a setting means 67 that can set the number of transfers of the fabric transfer mechanism, and a setting means 67 that can set the number of transfers of the fabric transfer mechanism. In a sewing device that repeats the operation of a sewing machine and the movement of a cloth transport mechanism in response to a sewing signal until the number of times set by a setting means is reached, the cloth that has been sewn at a predetermined location is moved to a place away from a workbench. A loading device G that operates to sequentially stack the fabric, and a counting means for counting the number of times the fabric transfer mechanism is transferred, and the loading device is operated in connection with stopping the sewing machine after the fabric transfer mechanism has been activated the number of times set by the setting device. A cloth loading device for a sewing device, characterized in that it is equipped with a control circuit (CPU).