JPH0441127A - Wire recovering device for wire discharge machining device - 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] [Industrial Application Field] The present invention relates to a wire electrical discharge machining device, and particularly relates to a wire collection device that can detect the amount of used wire electrodes collected in a wire collection box. .

[Prior Art] FIG. 6 is a perspective view schematically showing a wire recovery device of a conventional wire electric discharge machining apparatus, and FIG. 7 is a sectional view of the same wire recovery device.

In the figure, (1) is a wire collection box, (2) is a used wire electrode, and (3) is a wire collection roller that collects the used wire electrode (2).

Next, the operation of the conventional example will be explained.

The used wire electrode (2) is collected into a wire collection box (1) by a wire collection roller (3). The operator should periodically check to make sure that used wire electrodes (2) do not overflow from the wire collection box (1), and prevent problems caused by used wire electrodes (2) overflowing from the wire collection box (1). It is prevented.

[Problems to be Solved by the Invention] Since the wire collection device of the conventional wire electric discharge machining apparatus is configured as described above, it is difficult to collect the used wire electrode (2) to be collected in the wire collection box (1). The problem was that the amount had to be constantly checked.

The present invention has been made to solve the above-mentioned problems. It is not necessary to constantly check the amount of used wire electrodes collected, a full message can be displayed when the electrode is full, and the used wire electrode can be collected for a long time. [Means for Solving the Problem] A wire recovery device for a wire electrical discharge machining device according to the present invention aims to obtain a wire recovery device for a wire electrical discharge machining device that can recover electrodes.
A wire collection box for collecting used wire electrodes subjected to electrical discharge machining, and a wire electrode arranged vertically in the wire collection box, collected in the wire collection box and short-circuited by the wire electrodes accumulated at a constant height. The detection means includes an upper detection plate and a lower detection plate.

In addition, in order to be able to collect the used wire electrodes over a long period of time, in addition to the detection means, the wire electrodes are operated in response to the detection signal of the detection means, and the collected and accumulated wire electrodes are sent to a wire collection box. They are equipped with transportation means to move them within the area.

Furthermore, a wire recovery device for a wire electrical discharge machining apparatus according to another invention includes a wire recovery box for recovering used wire electrodes subjected to electrical discharge machining, a wire receiving tray provided at the bottom of the wire recovery box, A detection means is provided between the bottom of the wire collection box and the wire tray, and detects when the wire electrodes deposited on the wire tray have reached a predetermined weight, and a full message is displayed based on the detection signal of the detection means. The present invention includes a display means for displaying the information.

[Function] In the present invention, when the upper detection plate and the lower detection plate of the detection means arranged vertically in the wire collection box reach a certain height when the wire electrodes collected and deposited in the wire collection box reach a certain height. It is possible to detect the collection limit of the used wire electrodes that are short-circuited by the wire electrodes.

Further, when the detection means detects the collection limit amount of used wire electrodes accumulated in the wire collection box, the moving means operates in response to the detection signal to remove the used wire electrodes accumulated in the wire collection box. The used wire electrode can be moved and collected again at the wire electrode deposition position.

Furthermore, when the wire electrodes deposited on the wire tray provided at the bottom of the wire collection box reach a predetermined weight, a detection means provided between the bottom of the wire collection box and the wire tray detects the deposited wire electrodes. The display means displays a full message based on the detection signal of the detection means.

[Embodiment] FIG. 1 is a perspective view schematically showing an embodiment of the present invention, and FIG. 2 is a sectional view of the same embodiment. In the figure, the same components as those in the conventional example are given the same reference numerals, and the explanation of the duplicated components will be omitted. (4a) and (4b) are half-split upper detection plates that constitute part of the detection means provided at the top of the wire collection box (2), and (5) is the bottom of the wire collection box (2). The lower detection plate (6) constituting a part of the detection means provided in the lower detection plate (6) is an NC device to which the upper detection plates (4a) and (4b) and the lower detection plate (5) are connected.

Next, the operation of the above embodiment will be explained.

The used wire electrode (2) is collected into a wire collection box (1) by a wire collection roller (3). Wire collection box (
As the used wire electrode (2) is collected in 1),
The collected wire electrode (2) is deposited in the wire collection box (1), and when the wire electrode (2) reaches the limit point where it can be collected into the wire collection box (1), the upper detection plate (4a) or (
4b) and the lower detection plate (5) are short-circuited by the wire electrode (2) deposited in the wire collection box (1), so that the used wire electrode (2) is no longer removed from the wire collection box (1). Detects that it cannot be recovered. Here, the NC device (6) which received the detection signal due to the short circuit displays on, for example, a CRT (not shown) that the collection limit has been reached, allowing the operator to remove the accumulated wires in the wire collection box (2). Knowing that the used wire electrode (2) has reached the limit for collection, the used wire electrode (2) collected in the wire collection box (1) is discarded.

FIG. 3 is a sectional view showing another embodiment of the present invention.

In this embodiment, a hydraulic cylinder unit (7) is arranged at the bottom of the wire collection box (1).
The rod (7a) of 7) is connected to the lower surface of the negative end side of the lower detection plate (5). In this embodiment, the wire electrode (2) between the upper detection plate (4a) or 4b) and the lower detection plate (5) indicates that the wire electrode (2) has reached the limit point at which it can be collected into the wire collection box (1). ), and upon receiving the detection signal, the hydraulic cylinder unit (
7) works. And hydraulic cylinder unit (7)
Due to the operation of , the rod (7a) rises and the lower detection plate (
5) is lifted, and the lower detection plate (5) becomes a slide. Therefore, the used wire electrode (2), which was deposited on the lower detection plate (5), for example on the left side in FIG. 3, is moved to the right side. Thereafter, the rod (7a) of the hydraulic cylinder unit (7) is lowered to return to its original state, thereby depositing the recovered wire electrode (2) again on the left side of the lower detection plate (5). This made it possible to increase the amount of wire electrodes (2) recovered and to collect the wire electrodes (2) over a long period of time.

FIG. 4 is a sectional view showing another embodiment of the present invention.

This example shows another mode for moving used wire electrodes (2), in which a hydraulic cylinder unit (7) is disposed on the side of the wire collection box (1), and the horizontal direction A compression plate (8) is provided at the tip of a rod (7) that moves forward and backward. In this embodiment, the wire electrode (2) between the upper detection plate (4a) or (4b) and the lower detection plate (5) indicates that the wire electrode (2) has reached the limit point at which it can be collected into the wire collection box (1). The hydraulic cylinder unit (7) operates in response to the detection signal. Then, the rod (7a) is attached to the wire collection box (1).
), the compression plate (8) provided at the tip of the rod (7a) moves from the left to the right in Fig. 4, and is deposited on the left side on the lower detection plate (5). The used wire electrode (2) is moved to the right by the compression plate (8) and then compressed. After that, by withdrawing the rod (7a) of the hydraulic cylinder (7) and returning it to its original state, the wire electrode (2) can be deposited again on the left side on the lower detection plate (5), and the wire electrode (2) can be recovered. The amount can be increased. In this embodiment, the deposited wire electrode (2) can not only be moved as in the embodiment shown in FIG. 3, but also compressed, so compared to the embodiment shown in FIG. 2) The amount of recovery will increase significantly.

FIG. 5 is a block diagram schematically showing still another embodiment of the present invention. In this embodiment, a wire tray (10) for depositing used wire electrodes (2) is provided at the bottom of the wire collection box (1), and the wire tray (10) is connected to the bottom of the wire collection box (1). A piezoelectric element (11) serving as a detection means for detecting the weight of the wire tray (10) is provided between them. (12) is an amplifier that amplifies the detection signal of the piezoelectric element (11); (13) is a comparator that compares the voltage of the detection signal amplified by the amplifier (12) with a reference voltage; (14) is an NC device; (15) is the NC device (16
) is a display means for CRT.

In this embodiment, the wire electrode (2) is fed into the wire collection box (1) by the wire collection roller (3), and when it is deposited on the wire tray (10) in the wire collection box (1), the wire Depending on the weight of the electrode (2), the wire tray (1
Pressure is applied to the piezoelectric element (11) located under 0). The piezoelectric element (11) outputs a voltage corresponding to the pressure as a detection signal and inputs it to the amplifier (12). Amplifier (1
The voltage input to 2) is amplified and input to the comparator (13). A wire collection box (1) is placed in advance for the comparator (13).
A reference voltage is set that corresponds to the weight when the maximum amount of wire electrodes (2) that can be recovered is recovered. Comparator (1
In 3), the voltage of the detection signal inputted from the amplifier (12) and the reference voltage are compared, and if the voltage of the detection signal exceeds the reference voltage, a signal is output to the NC device (14). A full message is displayed on the CRT (15) indicating that the wire electrode (2) has reached the collection limit.

In the above embodiment, a piezoelectric element (1) is used as a detection means for detecting the weight of the wire electrode (2) in the wire collection box (1).
1) is used, but a spring is attached to the lower side of the wire tray (10), the spring is compressed by the weight of the wire electrode (2), and a limit switch is provided at the position where the collection limit amount is exceeded. The full time may be known by detecting the collection limit amount of the wire electrode (2) by turning on and off a limit switch.

[Effects of the Invention] As explained above, the present invention has the upper detection plate and the lower detection plate of the detection means disposed vertically in the wire collection box so that the wire electrodes accumulated in the wire collection box are collected at a certain height. When the amount of used wire electrodes is reached, it is short-circuited by the wire electrode, and the collection limit amount of used wire electrodes can be detected, so there is no need to constantly check the amount of used wire electrodes to be collected.
This has the effect of eliminating the problem of used wire electrodes overflowing and making it easier to work with.

Further, when the detection means detects the collection limit amount of used wire electrodes accumulated in the wire collection box, the moving means operates in response to the detection signal to remove the used wire electrodes accumulated in the wire collection box. By moving the wire electrodes, the used wire electrodes can be collected again at the wire electrode deposition position, which greatly increases the amount of used wire electrodes collected and allows wire electrodes to be collected over a long period of time. have an effect.

Furthermore, when the wire electrodes deposited on the wire tray provided at the bottom of the wire collection box reach a predetermined weight, a detection means provided between the bottom of the wire collection box and the wire tray detects the deposited wire electrodes. Since it is detected that the wire has reached a predetermined weight, and the display means displays a full message based on the detection signal of the detection means, there is an effect that a wire collection device with good maintainability can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an outline of one embodiment of the present invention, FIG. 2 is a cross-sectional view of the same embodiment, FIG. 3 is a cross-sectional view showing another embodiment of the present invention, and FIG. FIG. 5 is a cross-sectional view showing another embodiment of the invention, FIG. 5 is a block diagram schematically showing still another embodiment of the invention, and FIG. 6 is a schematic diagram of a wire recovery device of a conventional wire electric discharge machining device. FIG. 7 is a sectional view of the wire recovery device. In the figure, (1) is a wire collection box, (2) is a wire electrode, and (4a) and (4b) are upper detection plates (detection means).
. (5) is a lower detection plate (detection means). Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Patent Attorney Muneharu Sasaki Figure 4 Figure 5 Figure 6 Figure 7

Claims (3)

[Claims] (1) A wire collection box for collecting used wire electrodes subjected to electrical discharge machining, and wire electrodes arranged vertically in the wire collection box, collected in the wire collection box and deposited at a constant height. 1. A wire recovery device for a wire electrical discharge machining apparatus, comprising detection means comprising an upper detection plate and a lower detection plate that are short-circuited. (2) A wire collection box for collecting used wire electrodes subjected to electrical discharge machining, and wire electrodes arranged vertically in the wire collection box, collected in the wire collection box, and deposited at a constant height. A detection means comprising an upper detection plate and a lower detection plate that are short-circuited by the detection means, and a moving means that operates upon receiving a detection signal from the detection means and moves the collected wire electrode within the wire collection box. Wire recovery device for wire electrical discharge machining equipment. (3) A wire collection box for collecting used wire electrodes subjected to electrical discharge machining, a wire tray provided at the bottom of the wire collection box, and a wire tray provided between the bottom of the wire collection box and the wire tray. , a wire discharge characterized by comprising: a detection means for detecting that the wire electrode deposited on the wire tray has reached a predetermined weight; and a display means for displaying a full message based on a detection signal of the detection means. Wire recovery device for processing equipment.