KR950011426B1 - Control device of flat glass edge cutting - Google Patents

Abstract

The numerical control chamfering machine for a plate glass (8) includes a grinding unit (7) with an electric motor (6) and a rotatable table (2) with a number of suction units for the plate glass. An encoder (16) generating a pulse signal according to the rotation of the table is suspended adjacent to a rotation shaft (10) of the table and driven by a pulley and timing belt (18) system connected to the rotation shaft of the table. The output terminal of the encoder is connected to a digital counter (19) which controls a solenoid valve (A), a switch (B) for the grinding unit and a rotation control inverter (C).

Description

Chamfering position numerical control device of plate glass chamfering machine

1 is a partially cutaway side view of the flat glass chamfering machine is installed.

Figure 2 is a detailed view showing the interconnection state of the present invention device and the chamfering main parts.

3 is an exemplary view showing the chamfering form of the plate glass.

Figure 4 is an exemplary view showing the type of plate glass chamfered with the complete rotation of the suction rotation table 360 ° or more in one direction.

Figure 5 is an exemplary view showing the type of plate glass chamfering the adsorption rotation table is partially rotated.

* Explanation of symbols for main parts of the drawings

1: Chamfering body 2: adsorption rotary table

3: vertical beam 4: pneumatic rotary cylinder

5: second joint 6: motor

7: diamond wheel 10: rotating shaft of the suction table

12: reducer 13: belt

16: encoder 18: timing belt

19: Digital conter A: Solenoid valve

B: Dia-wheel motor electronic switch C: Invert and reverse speed inverter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically numerically controlling the chamfering position in a plate glass deformation chamfering machine for smoothly and beautifully processing the cut portions of the plate glass cut into various shapes. As is well known, due to the development of the industry, the plate glass is cut into various forms and used a lot for building materials or decoration, but the plate glass cut into various shapes is very sharp and there is a risk of injury when used as it is. Therefore, the sharp cutting part is used as a diamond wheel mounted on the motor, smoothly and beautifully chamfered in a round shape, right angle shape, inclined shape, etc. as shown in FIG. 3 and used for this purpose. The chamfering machine makes the chamfering by contacting the cutting part of the plate glass with the high speed rotating diamond wheel while rotating slowly while the plate glass to be chamfered is fixed to the adsorption table.

However, as the shape of the plate glass to be chamfered in various ways, as shown in FIG. 4, the round, oval, and rounded corners have a form in which the plate glass rotates 360 degrees so that the chamfering start position and the end of the chamfer are encountered. Likewise, the bottom is a straight line, the top is a round half moon shape, or the bottom of both sides is a straight line, and only the top is round, and the plate glass is partially rotated and chamfered.

The round, oval or rounded square plate glass, like the former, adsorbs the plate glass to the suction rotating table during chamfering operation and slowly rotates it while advancing to the plate glass while rotating the motor with the diamond wheel at high speed to chamfer the cut portion of the plate glass. In most cases, in the case of the inclined shape processing, roughing the plate glass rotating with the coarse wheel about two revolutions, and then reprocessing about two revolutions with the fine wheel. And lastly, the grinding wheel should be ground two times with a hot operation wheel to complete the slanted chamfering process.

However, since all of these operations are performed roughly manually, if the machining is inadvertently processed more than two turns, or if the two turns are insufficient, the machining surface is not uniform and often a defective product is produced. Or 3 sides are straight and only the upper surface is processed, the plate glass is adsorbed and rotated so that the starting point of chamfering comes to the front of the chamfering wheel, and then the inclined chamfering is started. Move the starting position to the front of the diamond wheel and repeat it again to start the second chamfering operation.

Thus, in order to do the pyrite, grinding and grinding as a manual operation, it is cumbersome, inconvenient and very productive to work while repeating the forward and reverse rotation many times. In addition, it is very difficult to find the exact position of the chamfering start and end of chamfering of the glass pane.

The present invention has been devised to solve these various problems, and the adsorption rotation of a conventional plate glass deformed chamfer by connecting a central axis of an encoder that transmits a signal while rotating with a timing fleece and a belt or by using a gear or a coupling Solder for pneumatic rotary cylinder operation, which directly connects with the table center axis and installs a digital counter that counts in response to the encoder's signal at the upper part of the plate glass chamfering machine, and advances and rewinds the dia-wheel motor of the plate glass plane machine. It consists of a valve, a magnet switch for turning the dial wheel on and off, a solenoid valve for supplying coolant for chamfering, and an inverter that controls the plate glass adsorption rotary table motor for forward rotation, reverse rotation, and rotation speed adjustment. And calculate the rotation angle of the plate glass to be chamfered (1 rotation is 10000 pulses). When the calculated value is set in the digital counter and the chamfering operation is performed, the digital counter continuously records and records the pulse signal sent from the encoder.When the value matches the set value, the switch built in the counter operates to reverse the chamfering diamond wheel motor. In addition, the cooling station supply is also stopped, and the rotation of the adsorption rotary table is also stopped so that the chamfering start position and chamfering end position of the plate glass to be chamfered can be brought to the correct position arbitrarily, as compared to conventional chamfering by eye. Therefore, this principle is designed to automate the chamfering work itself.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an overall view of a plate glass deformable chamfer provided with the present invention control device, showing the internal structure by partially cutting the lower body 1, and the reference numeral 2 is adsorption to rotate the plate glass 8 by adsorption. The rotating table (3) is a vertical beam, (4) is a pneumatic rotating cylinder for advancing and moving the joint beam.

In addition, the reference numeral 5 is a second joint beam, the end of which the motor 6 is suspended, the motor 6 is coupled to the diamond wheel (7). Inside the body 1, the plate glass adsorption table rotating side 10 is connected to the reducer 12 by a coupling 11, and the reducer 12 is connected to the motor 14 as a belt 13 so that the motor ( The plate glass adsorption table rotating side 10 is rotated by the rotation of 14). A separate timing plate 15 is attached to the plate glass adsorption table rotating shaft 10, and an encoder 16 for generating a one-rotation “1000” pulse is installed on a side of the plate glass adsorption table rotating shaft 10 by a separate holder 17. 16 is a timing belt 18, which is connected to the fleece 15 of the plate glass adsorption table rotating shaft 10. When the adsorption rotation table 2 rotates once, the encoder 16 also rotates once and generates a signal of 1000 pulses. This pulse signal is counted in the digital counter 19.

In addition, the digital counter 19 is installed below the second joint beam 5 and is connected to the main control unit of the chamfering machine, which is the same as FIG. That is, FIG. 2 is an exemplary view showing the overall connection state of the present invention in detail. The encoder 16 is connected to the digital counter 19, and the digital counter 19 is again a solenoid valve A and an electronic switch for a dia wheel motor. (B) And it is configured to control them by using the relay switch and the tire switch appropriately in the forward and reverse speed control inverter (C), assuming that the actual worker will be chamfered as follows.

First, in the case of flat glass where the chamfering start position and the chamfering end face each other, as shown in FIG. 4, if the chamfering processing of roughing, medium grinding and grinding is performed about 2 turns each, the digital counter 19 sets the chamfering end value. Enter '2000' into the plate 19B and start chamfering.

This is because a pulse signal of "1000" is generated when the encoder 16 rotates one time, but a pulse signal of "1500" is generated when the encoder 16 rotates, and a pulse signal of "2000" is generated when the suction rotation table rotates two times. .

As chamfering proceeds, the encoder 16 also rotates in a 1: 1 ratio as the adsorption rotation table 2 rotates, so that the same rotation and pulse signal are generated and counted in the digital counter 19. Continue to 19A). Therefore, if the adsorption rotation table 2 is rotated once, "1000" is recorded on the digital counter, and if it is rotated 2 times, "2000" is recorded. Therefore, the value recorded on the pulse signal numerical value plate 19A becomes "2000" and is chamfered. If the value coincides with the value "2000" input to the end setting numerical value plate 19B, the digital counter 19 at this moment sends a current to the solenoid valve A to open the valve to rotate the pneumatic rotary cylinder 4 to chamfer the diamond. When the wheel motor 6 is reversed from the plate glass 8 and the current sent to the electromagnetic switch B for the diaphragm motor is turned off, the current supplied to the diaphragm motor 6 is cut off to stop the rotation. The solenoid valve 20 is also cut off to stop the cooling water supply.

Then, the user immediately replaces the wheel for grinding on the diamond wheel motor 6 and mounts it in the same way as described above. If the grinding work is carried out again, the work can be performed without wasting time. The points can be matched so that the chamfers are always constant and smooth. Therefore, the occurrence of defective products can be suppressed and chamfering work can be performed quickly.

In addition, in the case of the plate glass that needs to be chamfered while partially rotating as shown in FIG. 5, the chamfering start setting plate (19C) is set to "0", and the chamfering end setting plate (19B) varies depending on the shape of the plate glass. If it is assumed that the shape is set to "500" and the chamfering operation is started, the adsorption rotation table 2 is rotated and recorded continuously from "0", and when it matches the "500" set, the pneumatic rotation cylinder ( By the operation of 4), the diamond wheel motor 6 reverses from the plate glass 8, and the plate glass reverses quickly, and the plate glass is continuously subtracted and recorded from "500". The table (2) stops and comes exactly to the chamfering start position. Therefore, the diaphragm (7) can be changed and mounted, and the chamfering work can be continued. Thus, even in the plate glass that needs to be chamfered while making a partial rotation, the chamfering start point and the chamfering end point can be correctly brought into place.

As described above, the present invention includes a solenoid valve (A) for controlling a pneumatic rotating cylinder as an encoder (16) and a digital counter (19), an electromagnetic switch (B) for a diamond wheel motor, and a forward and reverse speed control inverter (C). By controlling, it is possible to match the chamfering start point and end point of plate glass automatically, not by hand, so that the chamfered surface is evenly compared to the conventional manual work. It can automate itself, so if one worker is circular plate glass or elliptical, it can be used to chamfer by using two or three chamfers at the same time.

Claims (1)

In the plate glass deformed chamfering machine in which a diamond wheel motor advances to the plate glass and cuts the plate glass, while adsorbing and rotating the plate glass 8 on the suction rotating table 2 provided at the center of the main body 1, the plate glass inside the body 1 The encoder 16 is fixedly installed adjacent to the suction table rotating shaft 10, and is connected to the suction table rotating side 10 as a timing belt 18 and a pleat to rotate the suction table rotating side 10 as a pulse signal is generated. The output terminal of the encoder 16 is connected to the digital counter 19 so that the digital counter 19 is an electronic switch (B) for the diaphragm motor of the solenoid valve (A) according to the output signal of the encoder 16. Chamfering position numerical control device of the flat glass deformed chamfer, characterized in that configured to control the forward and reverse speed control inverter (C).

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