KR101713897B1 - PCB assembly of touching type machine control panel - Google Patents

Abstract

The present invention is capable of selecting various signals with respect to an input / output signal system which is different from a numerical control device of a machine tool, and which can be easily operated and minimized in manufacturing cost while having excellent visibility, The present invention relates to an integrated PCB assembly for a touch panel of a machine tool according to a new form capable of freely aligning a plurality of touch sensor switches for detecting contact generation through a touch panel in a capacitive manner, A touch sensor IC for providing a sensing signal according to a change; A connector configured to receive an input / output voltage and a signal from a Numerical Control (NC) of a machine tool; A microcomputer configured to receive a sensing signal of each touch sensor IC constituting the printed circuit board by I2C communication and to process a command and a signal of the numerical controller according to a designated address; And a DC / DC converter for matching the input / output voltage of the numerical control device with the input / output voltage of each of the touch sensor IC and the microcomputer of the printed circuit board via the connector.

Description

Technical Field [0001] The present invention relates to an integrated PCB assembly for a touch panel of a machine tool,

The present invention relates to an operation panel for inputting commands for operation of a computer numerical control (CNC) machine tool for operation such as operation, operation selection, data input, and the like, and more particularly to an operation panel that is easy to operate and has good visibility, It is also possible to select various signals for the I / O signal system which is independent of the numerical control device of the machine tool, but also to arrange the address designation freely according to the customer's demand. To an integrated PCB assembly.

Currently, CNC (Machine Numerical Control) machine tools are moving toward a multi-product small volume production system according to the customer's demand for building an optimized production base system suitable for the operation function.

These market changes are becoming an absolute strategic technology that directly relates to the survival and sustainable growth of the machine tool industry. However, some modularized parts have limitations in small-scale production of multiple products due to their technological composition and manufacturing process, And a representative example of the CNC machine tool is a machine control panel for inputting a command for operating a CNC machine tool, selecting an operation, and inputting data.

Regarding such a conventional operation panel for a machine tool, registration is made in the Registration Practical Utility Model Registration No. 20-0420458, Registration No. 10-1473590, Utility Model Publication No. 1994-0007674, Registered Utility Model No. 20-0299472, Japanese Utility Model Publication No. 20-0379622, Japanese Laid-Open Patent Publication No. 2001-0036985, and the like.

However, the above-described conventional operation panel for a machine tool is constituted by a conventional mechanical switch type as shown in FIG. 1 of the accompanying drawings. In addition to the tact switch 21 provided in the PCB, The waterproof push button 22 of the waterproof push button 22 is complicated in its entirety and is not suitable for customized design because of its high proportion of mass-produced parts, and a high manufacturing cost is required.

In addition, in the above-described conventional operation panel for machine tools, there is a problem in that the tact switch 21 is damaged, and durability problems such as symbol printing, such as operation selection, are exposed to cutting oil, , And a product capable of overcoming this problem is required.

Particularly, a machine tool control panel is provided by attaching a film for waterproofing to a surface of a machine tool, such as cutting oil, which is highly infiltrated with a fluid. In such a film, damage such as peeling is frequently caused by a button operation, There is a problem in that it is inevitable that the operation failure due to the infiltration of the gas is caused.

In addition, the conventional operation panel for a machine tool has a simple structure in which each switch and the numerical control device are directly connected to each other in accordance with an address specified by a numerical control device (NC: Numerical Control) of a machine tool, There is a problem that it can not perform the input / output error diagnosis function because it is composed of the circuit configuration. Since it is difficult to modify the change and alignment other than the initial input / output signal system and address, PCBs must be manufactured.

Of course, in recent years, a touch panel type operation panel employing an ITO thin film type touch screen technology, which is configured with an LCD display, is being developed, thereby improving convenience of operation and visibility.

However, such a touch panel type operation panel is excellent in terms of performance and various functions, but has a disadvantage that the price of the touch screen is expensive, and the maintenance cost is also increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a numerical control apparatus of a machine tool which can be operated with ease and has excellent visibility while minimizing the manufacturing cost, The present invention provides an integrated PCB assembly for a touch panel of a machine tool according to a new type that allows selection of various signals for the input /

According to an aspect of the present invention, there is provided an integrated PCB assembly for a touch panel of a machine tool, comprising: a plurality of touch sensor switches for sensing contact generation through a touch panel in a capacitive manner; A printed circuit board having a touch sensor IC for providing a sensing signal; A connector configured to receive an input / output voltage and a signal from a Numerical Control (NC) of a machine tool; A microcomputer configured to receive a sensing signal of each touch sensor IC constituting the printed circuit board by I2C communication and to process a command and a signal of the numerical controller according to a designated address; And a DC / DC converter for matching the input / output voltage of the numerical control device with the input / output voltages of the touch sensor IC and the microcomputer of the printed circuit board via the connector.

Here, the touch sensor switch further includes an illuminating LED adjacent to the touch sensor switch, and the illuminating LED receives the driving voltage through the DC / DC converter and receives the emission control signal from the microcomputer. .

In addition, the DC / DC converter receives a driving voltage of 24 V from the numerical control device, decompresses the voltage to a driving voltage of 2.5 V to 5 V, and outputs the SMPS to the touch sensor IC and the microcomputer of the printed circuit board. Power supply circuit and a 24V input signal from the numerical controller to reduce the voltage to 2.5 to 5V and supply the signal to the microcomputer. The microcomputer also receives a signal of 2.5 to 5V from the microcomputer, And a level shifter or a photocoupler provided to the numerical controller.

In addition, the printed circuit board is further provided with a multiplexer (MUX) and a demultiplexer (DEMUX) for securing multi-channels.

The microcomputer is configured to be capable of programming at least one of settings for address designation, touch sensitivity setting, operation and response time setting, input / output error diagnosis, and change setting according to the operator's request, The input / output signal system can be selected by signals of at least one of a direct method, a binary method, a real binary method, a gray method, and a matrix method. .

As described above, the integrated PCB assembly for a touch panel of the machine tool according to the present invention is very inexpensive and can be electrically operated by touching compared to a touch panel type touch panel using an ITO thin film film type touch panel constructed with an LCD display The operation convenience and the visibility can be improved similarly to the touch panel type operation panel.

In addition, the integrated PCB assembly for a touch panel of a machine tool according to the present invention allows various signals to be selected for an input / output signal system that is independent of the numerical control device of a machine tool, The present invention is advantageous in that it can be freely aligned in accordance with the request of the user. In other words, unlike the address specified in the numerical control device of the machine tool, the addresses for the respective touch sensor switches can be variously designated according to the operation type, thereby achieving the multi-product small quantity production system according to the customer's demand.

In addition, the integrated PC assembly for a touch panel of the machine tool according to the present invention includes a microcomputer integrally formed therein. In addition, the microcomputer includes a central processing unit for designating an address, setting sensitivity of touch, And at least one of the settings for diagnosing and changing the input / output error can be programmed according to the operator's request.

Fig. 1 is a circuit diagram showing an operation panel of a conventional machine tool
2 is an exploded perspective view illustrating an example of an installation structure of an integrated PCB assembly for a touch panel of a machine tool according to an embodiment of the present invention.
3 is a cross-sectional view illustrating an example of an installation structure of an integrated PCB assembly for a touch panel of a machine tool according to an embodiment of the present invention.
4 is a circuit diagram illustrating an integrated PCB assembly for a touch panel of a machine tool according to an embodiment of the present invention.
FIGS. 5 to 11 are circuit diagrams showing signal transmission sequences in order to explain the operation of an integrated PCB assembly for a touch panel of a machine tool according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of an integrated PCB assembly for a touch panel of a machine tool according to the present invention will be described with reference to FIGS. 2 to 11.

FIG. 2 is an exploded perspective view illustrating an example of an installation structure of an integrated PCB assembly for a touch panel of a machine tool according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of a machine tool according to an embodiment of the present invention. Sectional view illustrating an example of an installation structure of an integrated PCB assembly for a touch operation panel of the present invention.

Referring to these drawings, an integrated PCB assembly (hereinafter referred to as "integrated PCB assembly") 300 for a touch panel of a machine tool according to an embodiment of the present invention is disposed at the rear of the touch panel 200, And the operation of the operator is selected through the panel (200). At this time, the touch panel 200 is made of a transparent tempered glass or a polycarbonate material, and a plurality of function operation symbols (images or letters) 201 are formed on the back surface thereof do. That is, the operator can manipulate the manipulation position in a state that the manipulation position is accurately recognized through the respective function manipulation symbols 201 described above.

FIG. 4 is a circuit diagram illustrating an integrated PCB assembly for a touch panel of a machine tool according to an exemplary embodiment of the present invention. Referring to FIG. 4, the integrated PCB assembly according to an exemplary embodiment of the present invention includes: The microcomputer 330 may include a substrate 310, a connector 320, a microcomputer 330, and a DC / DC converter 340. In particular, The output signal system can be variously selected and accommodated as a single PCB integrated with a direct method, a binary method, a real binary method, a gray method, and a matrix method. In addition, at least one of designation or setting of address, designation of sensitivity of touch, setting of operation and response time, diagnosis of input / output error and change of setting is requested to the operator's request LA features that enable programming.

This will be described in more detail below for each configuration.

First, the printed circuit board 310 is a printed circuit board.

The front surface of the printed circuit board 310 is provided with a capacitive touch sensor (capacitance sensor) switch 311 and a touch sensor IC 312, respectively.

Each of the touch sensor switches 311 is a switch for sensing the touch panel 200 in a capacitive manner when a user touches a portion where each function operation symbol 201 is located, (Or adjacent) to the backside.

The touch sensor IC 312 is a dedicated IC for sensing a change in capacitance of the touch sensor switch 311 when the touch sensor switch 311 is operated and providing a corresponding sensing signal. Respectively.

Particularly, in the vicinity of each of the touch sensor switches 311 on the surface of the printed circuit board 310 (the inner side of each touch sensor switch in the embodiment of the present invention), when the touch sensor switch 311 is selected, (LED) 313 is additionally provided.

That is, the illumination LED 313 can be illuminated when a contact to the specific touch sensor switch 311 is generated through the provision of the additional light source 313, so that the operator can easily recognize whether the touch sensor switch 311 is controlled or not . At this time, the illumination LED 313 receives the driving voltage through the DC / DC converter 340 and receives the emission control signal from the microcomputer 330 to emit light. Of course, the illumination LED 313 may not be provided only inside the touch sensor switches 311, but may be mounted on various portions of the PCB 310 to easily recognize whether or not the operation parts of the machine tool are operated .

Next, the connector 320 receives input / output voltages (drive voltage and input / output signals) from a numerical control device (NC) 10 of a machine tool, .

That is, the connector 23 of the operation panel for a machine tool according to the prior art (see FIG. 1) supplies each drive voltage from the NC 10 to each tact switch 21 and the illumination LED 24 The connector 320 according to the embodiment of the present invention is configured to receive the operation signal directly from each tact switch 21 and provide it to the NC 10 in addition to the NC 10 and the microcomputer 330 To perform only the relaying of the signal transmission / reception between them.

The microcomputer 330 is configured to receive a sensing signal of each touch sensor IC 312 constituting the printed circuit board 310 by I2C communication and to receive commands and signals of the NC 10 separately It is the part which is processed according to the address.

That is, if the NC 10 is configured to receive the operation signals directly from the respective touch sensor ICs 312, the respective touch sensor ICs 312 and the NCs 10 are controlled according to the address specified in the NC 10, In the embodiment of the present invention, the connector 320 and the microcomputer 330 are additionally provided so that the NC 10 and each touch The NC 10 communicates with the microcomputer 330 and the microcomputer 330 communicates with the respective touch sensor ICs 312 instead of directly communicating with the sensor ICs 312. Various circuit designs are possible .

In particular, the microcomputer 330 is configured to be able to program an address designation according to an operator's request. That is, the alignment position of each touch sensor switch 311 can be freely set according to the request of the customer through address designation for each touch sensor IC 312 through the microcomputer 330. Of course, in this case, the operator can easily recognize the positions of the symbols 201 to be printed on the back surface of the touch panel 200 by arranging them according to the designated addresses.

At the same time, the microcomputer 330 is configured to program at least one of settings for sensitivity setting, operation, response time setting, input / output error diagnosis, and change of touch according to a request of an operator. In other words, the microcomputer 330 can perform programming for various settings in consideration of performing a function as a central processing unit for controlling the actual touch operation panel. In particular, the above-described I / O error diagnosis and change are not performed by the NC 10 The microcomputer 330 can be programmed so that the circuit configuration can be unified.

In addition, the microcomputer 330 may convert various input and output signal systems into at least one of a direct method, a binary method, a real binary method, a gray method, and a matrix method And can be selected by a signal of the type according to the method.

On the other hand, in the operation panel for a machine tool, a plurality of input / output channels are required due to its use characteristics, but the channel of the microcomputer 330 is limited. Accordingly, in the embodiment of the present invention, it is shown that a multiplexer (MUX) 350 and a demultiplexer (360) are additionally provided in the PCB assembly 300, Securing.

The DC / DC converter 340 supplies the input / output voltage of the NC 10 provided through the connector 320 to each of the touch sensor IC 312 and the illumination LED 313 of the printed circuit board 310, And the input / output voltage of the microcomputer 330.

Output voltage supplied from the NC 10 is DC 24V and the input and output voltages of the circuit components such as the illumination LED 313, the touch sensor IC 312 and the microcomputer 330 are DC 2.5V to DC Output voltage supplied from the NC 10 and the input / output voltage of the illumination LED 313, the touch sensor IC 312, and the microcomputer 330 through the DC / DC converter 340, So that they can be matched.

The DC / DC converter 340 may include a level shifter 341 or a photocoupler 342 and a switching mode power supply (SMPS) circuit 343, .

The SMPS circuit 343 receives the driving voltage of 24 V from the NC 10 and reduces the voltage to a driving voltage of 2.5 V to 5 V so that the touch sensor IC 312 and the microcomputer The level shifter 341 or the photocoupler 342 receives an input signal of 24 V from the NC 10 and decompresses the signal to a signal of 2.5 to 5 V and outputs the signal to the microcomputer 330 And provides a signal of 2.5 to 5V from the microcomputer 330 to the 24V output signal and provides it to the NC 10.

Hereinafter, the operation of the integrated PCB assembly for a touch panel of a machine tool according to the above-described embodiment of the present invention will be described in more detail with reference to FIGS. 5 to 11.

First, the operator performs operations for various settings through the touch panel 200 constituting the touch operation panel. At this time, the operation through the touch panel 200 may be an operation for selecting a mode, an operation for an operation speed or a machining speed, an operation for supplying a cutting oil or the like.

At this time, the operator performs the operation by touching (touching) the position of various function operation symbols 201 viewed through the touch panel 200, as shown in FIG.

When the operator touches the touch panel 200, a change in the capacitance of the touch sensor switch 311 of the printed circuit board 310, which is in contact with the rear surface of the touch panel 200, Is sensed by the touch sensor IC 312 connected to the sensor switch 311, and the sensed signal is provided to the microcomputer 330 through I2C communication. This is as shown in Fig. 6 attached hereto.

7, the microcomputer 330 provides the received signal to the DC / DC converter 340 and outputs an output signal of a voltage (DC 24V) readable by the NC 10 The converted signal is then supplied to the NC 10 via the connector 320 as shown in FIG. 8, and the NC 10 outputs the converted output signal to the NC 10, .

Further, a signal related to such control is supplied from the NC 10 to the microcomputer 330 through the connector 320 again. That is, the signal of the NC 10 provided to the microcomputer 330 through the connector 320 is input to the DC / DC converter 340 at a low voltage (DC 2.5V to 5V) that can be read by the microcomputer 330 Converted into an input signal, and then supplied to the microcomputer 330. This is as shown in FIGS. 9 and 10 attached hereto.

Then, the microcomputer 330 performs emission control of each of the illumination LEDs 313 as shown in FIG. 11 based on the received signal, And can be easily recognized through the touch panel 200.

As a result, the integrated PCB assembly for touch operation panel of the machine tool according to the present invention is constructed so as to be electrically operated by touching, so that compared to the conventional touch panel type operation panel using the ITO thin film type touch screen technology It is possible to achieve an operation convenience and an improvement in visibility which are substantially inexpensive and almost similar to those of the touch panel type operation panel.

Furthermore, the integrated PCB assembly for a touch panel of a machine tool according to the present invention allows selection of various signals for an input / output signal system that is independent of the numerical control device of a machine tool, It is possible to arrange them freely according to the demands of the operator. In other words, unlike the address specified by the numerical control device 10 of the machine tool, the respective touch sensor ICs 312 can be addressed variously according to the type of work, thereby improving the working efficiency.

In addition, the integrated PCB assembly for a touch panel of a machine tool according to the present invention includes a microcomputer 330 as a central processing unit, so that various input / output signal systems can be directly A single PCB integrated with a direct method, a binary method, a real binary method, a gray method, and a matrix method can be variously selected and accommodated. In addition, the designation or setting of at least one of designation of address, sensitivity setting of touch, setting of operation and response time, setting of input / output error and change of setting can be programmed according to the operator's request.

10. NC 21. Tact switch
22. Pushbutton 23. Connector
24. Illumination LED 200. Touch panel
201. Functional operation symbol 300. PC assembly
310. Printed Circuit Board 311. Touch Sensor Switch
312. Touch Sensor IC 313. Lighting LED
320. Connector 330. Microcomputer
340. DC / DC converter 341. Level shifter
342. Photocoupler 343. SMPS circuit
350. Multiplex 360. Demultiplex

Claims (5)

A printed circuit board having a plurality of touch sensor switches for sensing the occurrence of contact through a touch panel in a capacitive manner and a touch sensor IC for providing a sensing signal according to a capacitance change of each touch sensor switch;
A connector configured to receive an input / output voltage and a signal from a Numerical Control (NC) of a machine tool;
A microcomputer configured to receive a sensing signal of each touch sensor IC constituting the printed circuit board by I2C communication and to process a command and a signal of the numerical controller according to a designated address;
And a DC / DC converter for matching the input / output voltage of the numerical control device with the input / output voltage of each of the touch sensor IC and the microcomputer of the printed circuit board through the connector,
The DC / DC converter
A switching mode power supply (SMPS) circuit provided with a driving voltage of 24 V from the numerical control device and provided to each touch sensor IC and a microcomputer of the printed circuit board at a driving voltage of 2.5 to 5 V,
The microcomputer receives the input signal of 24V from the numerical controller, decompresses the input signal to 2.5 to 5V, and supplies the signal to the microcomputer. Further, the microcomputer receives a signal of 2.5 to 5V from the microcomputer, And a photo coupler (Level Coupler). The integrated PCB assembly for a touch panel of a machine tool according to claim 1, The method according to claim 1,
The touch sensor switch further includes an illuminating LED adjacent to the touch sensor switch,
Wherein the light emitting diode is configured to receive a driving voltage through the DC / DC converter and to emit light by receiving a light emission control signal from the microcomputer. delete The method according to claim 1,
Wherein the printed circuit board is further provided with a multiplexer (MUX) and a demultiplexer (DEMUX) for securing a plurality of channels on the printed circuit board. The method according to claim 1,
The microcomputer
Wherein at least one of settings for address designation, touch sensitivity setting, operation and response time setting, input / output error diagnosis, and change setting is configured so as to be able to be programmed according to an operator's request,
Input and output signal systems can be selected as signals of at least one of Direct, Binary, Real Binary, Gray, and Matrix. And an integrated PCB assembly for a touch panel of a machine tool.

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