JPS5878697A - Control apparatus of industrial sewing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for an industrial sewing machine, and more particularly to a control device for an industrial sewing machine that controls setting of sewing patterns and sewing.

Conventionally, a control device for an industrial sewing machine has been provided with one sewing pattern setting device for setting a sewing pattern per control device set.

This sewing pattern setting device normally has 5 to 10
It is possible to set various sewing patterns and the number of stitches from θ to 99 stitches.

However, from the viewpoint of versatility, conventional control devices for industrial sewing machines have been provided with an expensive sewing pattern setting device for each set, as described above, resulting in an expensive control device as a whole. It is something that

Conversely, the sewing pattern setting device can be avoided from becoming expensive.

In order to reduce the number of sewing patterns and set stitches,
If the configuration was restricted so that it could be used only in specific sewing locations, the sewing patterns would not be sufficiently rich and the applications would be limited.

Further, as mentioned above, the reason why it was necessary to attach one sewing pattern setting device to one set of control devices is that there were only control devices that performed the following operations.

In other words, the conventional control device reads the contents set in the sewing pattern setting device every time the front switch is turned on, sews the sewing pattern and number of stitches that were set at that time, and completes the sewing. Afterwards, when the front pedal switch was turned on again, I was on my way to reading the contents of the sewing pattern setting device again.

Therefore, if there is no change in the settings of the sewing pattern setting device, the sewing pattern and number of stitches to be performed when the forefoot switch is turned on for the first time and when it is turned on again will be the same, and if there is a change, the sewing pattern and number of stitches will be different. It turns out.

However, if the sewing pattern setting device has been removed from the control device for some reason when the front switch is turned on again, even if the control device tries to read out the settings of the sewing pattern setting device, nothing will be read out. Usually, pattern stitching was not performed, but only regular stitching was performed.

That is, the conventional control device separately stores and holds the set sewing pattern within the device, even without the sewing pattern setting device.

This machine did not have a configuration that allowed the sewing pattern to be sewn.

The present invention provides a sewing pattern setting device which is a part of a control device.
The object of the present invention is to provide a control device for an industrial sewing machine that is inexpensive and has good performance, which eliminates the need for one control device to be attached as a separate unit to each set of control devices. ,,:
The gist of the present invention is that, as one of the functions of the control device of an industrial sewing machine, several types of sewing patterns set by a sewing pattern setting device, which is usually provided as a single device, can be set.
The control device is provided with a function that allows it to be stored in advance by a predetermined operation.

Even after separating the sewing pattern setting device from the control device,
The sewing pattern can be executed based on the stored contents.

The features of the present invention include a pedal detection section that detects the direction in which the foot pedal is depressed, a rotation speed detection section that detects the rotation speed of the sewing machine shaft, a position detection section that detects the upper and lower positions of the sewing machine needle,
It has a power source for rotating the sewing machine, and by controlling these input/output signals, it is possible to sew a specific sewing pattern set by a sewing pattern setting device with seven switches from a group of various switches. In the control device, the sewing pattern setting device is detachable so that it can be shared with the control device of another sewing machine, and the sewing pattern set by this device can be stored separately in the control device. The control device for an industrial sewing machine is configured such that the sewing pattern can be sewn even if the sewing pattern setting device is removed.

Next, embodiments according to the present invention will be described based on the respective figures.

Here, FIG. 1 is a perspective view of an industrial sewing machine equipped with a device according to an embodiment of the present invention, and FIG. 2 is a circuit configuration diagram of a control device for an industrial sewing machine according to an embodiment of the present invention. , FIG. 3 is an explanatory diagram of a sewing pattern.

First, in Fig. 1, MA is the sewing machine body, TA is the sewing machine table, FSW is the foot pedal, MO is the motor, TP is the transmission mechanism, CB is the controller related to the control section, P and DS are the foot pedal FSW PL is a sulpitman rod that connects the foot pedal FSW and the pedal sensor PDS; TG is a pedal sensor related to a pedal detection unit that detects whether the front pedal is pressed, the direction of the road, etc.; Rotation speed detection unit 1, PS that detects the rotation speed of the sewing machine shaft related to the rotation speed detection device
is a position detector related to a position detection unit that detects the upper position and lower position of the sewing machine needle.

PULI is the transmission pulley, PUL2 is the sewing machine shaft pulley, V
B is a belt that engages the transmission pulley PULI and the sewing machine shaft pulley PUL2.

SS is a sewn pattern setting device that is removable and that sets a crimp stitch pattern along various switch groups such as a digital switch, which will be described later.

The driving source for rotating and stopping the sewing machine shaft is the motor M.
It is composed of O and a transmission mechanism TP.

In addition, the control device includes a controller CB, a pedal sensor PDS,
It consists of a rotation speed detection section TG, a position detector PS, and a sewn pattern setting section SS that can be detached and removed.The sewing machine main body MA is also equipped with a reverse stitching mechanism. There is a reverse stitching device that can be activated as appropriate by a signal.

Next, its operation will be explained.

When the power is turned on, the motor MO starts rotating, and the power of the motor MO is transmitted to the transmission pulley PULI by appropriately operating the transmission mechanism TP in response to a signal from the controller CB of the control device, and the power is transmitted to the transmission pulley PULI. The sewing machine shaft pulley PUL2 is rotated via VB.

Based on the command from the pedal sensor PDS, the controller cB controls the rotation of the sewing machine shaft based on the rotation speed sensor TG and the position sensor PS so that the sewing pattern specified by the sewing pattern setting device SS is sewn. Control is based on signals.

Next, in FIG. 2, 1 is a sequence control circuit showing all parts of the control device except for the sewing pattern setting device SS, and 2 to 4 are outputs in three-state states (outputs are open). 5 to 10 are open collector AND circuits, 11 is an inverter circuit, and 12 is a detachable switch circuit for the sewing pattern setting device SS. 13 indicates a read signal, and 14 indicates a data signal.

In addition, A and B are digital switches, R8 is a rotary switch, IS to 4S are sewing pattern displays, PSW is a push button switch, SSW is a selection switch, D1 to D14 are diodes, R1 to R4 are resistors, vCC is the power source, GD is the clang, yccs is the original power source, and E is the battery.

Incidentally, in the above, the sequence control circuit 1. excluding the sewing pattern setting device SS including the switch circuit section 12. The latch circuits 2 to 4 and others are housed in the controller CB mentioned earlier, and the switch circuit section 12 is connected to the controller CB via a connector or the like.

Further, a and b in FIG. 3 indicate the number of stitches.

That is, the digital switches A and B in the switch circuit section 12 are used to set the number of stitches in each section of the sewing pattern. For example, if 0 to 15 stitches can be set and the number is displayed in binary, the signal The number of lines is 4 each.
It becomes a book (2° to 23).

The rotary switches R and 8 are used to set sewing patterns, and are capable of setting four types of sewing patterns IS to 48, and are represented by four signal lines.

An example of this sewing pattern is shown in FIG. 3, and the example sewing pattern is the digital switch A shown earlier.

The number of stitches a and b set by B are repeated to perform normal stitching and reverse stitching.

The sequence control circuit 1, which represents all parts of the control device except for the sewing pattern setting device SS, controls everything such as decoding and execution of sewing patterns.

The pushbutton switch PSW is a switch for generating a strobe signal for latching input signals to the latch circuits 2 to 4.

Further, the selection switch SSW is a part 12 of the switch circuit.
It is selected whether to perform the sewing pattern set in , or to perform the sewing pattern latched in advance in the latch circuits 2 to 4 related to the holding section. This is related to the operator. .

The read signal 13 is a read signal for reading the sewing pattern number output from the sequence control circuit 1, and the data signal 14 is a data signal of the sewing pattern input to the sequence control circuit 1.

The original power source yccs is the original power source that is generated from the line power source and serves as the power source for the circuit.

The potential of battery i is equal to the circuit power supply VCC.

Therefore, as long as the original power supply yccs is being supplied with power, no current flows from the battery E to the circuit, and the battery E is not consumed.

The operation of the device having the above configuration will be explained next.

First, when a specific sewing pattern and number of stitches are set in the switch circuit section 12 and the push button switch psw is pressed, the contents of the above switch circuit section 12 are changed to the latch circuit 2 to
It is latched to 4.

Then, turn the selection switch SSW to the ground GD side as shown.

Then, a 1L'' level signal is input to the AND circuits 6, 8.10, and a ``H'' level signal is input to the AND circuits 5, 7.9 by the inverter circuit 11.

In this state, if the sequence control circuit 1 outputs the read signal '4xa through a series of operations and attempts to read the data signal 14, the read signal 13 does not pass through the AND circuits 6, 8, and 10. The contents of the latch circuits 2.3.4 are sequentially read out through the AND circuits 5, 7.9, and the contents of the diodes D1-D4. D5-D8. D9-D1
2 and read as a data signal 14.

Resistors R1 to R4 are pull-up resistors for level setting.

Further, when the selection switch SSW is turned to the power supply ycc side, the contents set in the switch circuit section 12 are performed in the same manner.

The method of latching the contents of the latch circuits 2 to 4 when the main power source is turned off is as follows.

The original power supply VCC8 becomes the circuit power supply vCC through the diode D14, but when the original power supply yccs is cut off, the potential of the battery E becomes the circuit power supply CC through the diode D13, and the circuit continues to operate. By continuing to supply the power supply VCC to the circuit,
The latched contents of the latch circuits 2 to 4 do not disappear and continue to be held until the original power supply VCC8 is supplied with power again.

However, in the above embodiment, one latch circuit, which is a holding section, is attached to each switch.
For example, one switch or two or more latch circuits can be installed in the same way, and in this case, two or more types of sewing patterns can be performed.

As described above, according to this embodiment, it is possible to create a necessary sewing pattern with an inexpensive configuration, and if there is only one sewing pattern setting device, this can be done. By using this, it is possible to make many control devices perform various sewing patterns.Furthermore, a single sewing pattern setting device can be installed to preset and store a specific sewing pattern in the latch circuit. By switching the selection switch SSW, it is possible to switch between two or more types of sewing patterns with a simple operation.

In summary, according to the present invention, the sewing pattern setting device, which is a part of the control device, is connected to the control device 1.
It is possible to provide a control device for an industrial sewing machine that is inexpensive and has good performance, which eliminates the need for one machine to be attached to a set, and can be said to be an invention with excellent practical effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an industrial sewing machine according to an embodiment of the present invention, FIG. 2 is a circuit configuration diagram of a control device for an industrial sewing machine according to an embodiment of the present invention, and FIG. The figure is an explanatory diagram of a sewing pattern. FSW...foot pedal, MO...motor, TP...
・Transmission mechanism, CB...controller, PD8...pedal sensor, TG...rotation speed detection section, PS...position detector, SS...sewing pattern setting device, l...sequence control Circuit, 2 to 4... Latch circuit, 5 to 10... AND circuit, 11... Inverter circuit, 12... Switch circuit part, 13... Read signal, 14... Data Signal, A, B...Digital switch, R8...
・Rotary switch, Is~4S...Sewing pattern display, PSW...Push button switch, SSW...Selection switch, DI~D14...Diode, R1-R4
...resistance, vCC...power supply, yccs...main power supply, E...battery, a, b...number of stitches.

Claims (1)

[Claims] 1. A pedal detection unit that detects the direction of the pedal force on the foot pedal. It has a rotation speed detection section that detects the rotation speed of the sewing machine shaft, a position detection section that detects the upper and lower positions of the sewing machine needle, a power source for rotating the sewing machine, etc., and controls these input and output signals. In a control device that makes it possible to sew a specific sewing pattern set by a sewing pattern setting device including a group of various switches, the sewing pattern setting device can be connected to a control device of another sewing machine. In addition to making it removable so that it can be shared, the sewing pattern set can be stored separately in the control device, so that even if the sewing pattern setting device is removed, the sewing pattern can still be sewn. A control device for an industrial sewing machine, characterized in that it is configured as follows. 2. An industrial sewing machine according to claim 1, which is provided with an operator for separately storing the contents of the sewing pattern setting device in a holding section provided in the control device. Control device. 3. In the item described in claim 1, a retaining means is provided for retaining the memory contents related to the sewing pattern as necessary even after the power supply for operating the control device is cut off. A control device for an industrial sewing machine.