JPH0755419B2 - Machine tool and its control panel connection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a cable connecting means between a machine tool such as an electric discharge machine and its control panel.

[0002]

2. Description of the Related Art Conventionally, a machine tool such as an electric discharge machine and its control panel are installed at a distance of about 500 mm, and a large number of cables electrically connecting the control panel and the machine tool are provided with these cables. Crawling the installation floor, for example, the actual Kaisho 62
It was laid in a flexible electric wire protection tube composed of the screw portion S and the protection portion P shown in FIG.

[0003]

Generally, a control panel as described above is tested in an assembly plant by electrically connecting it to a machine tool in the same manner as at the time of installation, and then testing the electrical panel again at the time of shipment. The connection has been disassembled and shipped.
Therefore, if the above flexible wire protection tube is long, it is troublesome to handle during the above test and transportation, and the flexible wire protection tube crawls on the floor surface after installation, which hinders maintenance and cleaning. There was a problem that became.

Further, the flexible protection tube as described above is
Since there is a thick protective tube P on the outer circumference, there is a limit to the degree of flexibility.

The present invention has been made in order to solve the above-mentioned problems, and a machine tool and its control panel can be installed adjacent to each other so that they can be easily electrically connected by a short cable and laid on the floor. While eliminating the flexible electric wire protection tube,
An object of the present invention is to provide a connecting device that can cope with a change in installation position.

[0006]

In order to achieve the above object, in the control panel connecting device according to the first aspect of the present invention, the housing is provided adjacent to the terminal box of the machine tool and is provided on both opposing surfaces. Open the cable connection port and close each of these cable connection ports with a two-piece lid.
In addition, the cable connecting both is sandwiched by the semi-circular portions formed at the joints of these lids, and inside the duct hose whose end portions are connected to the terminal members on the terminal box side and the control panel side so that they can move forward and backward. Has been laid.

In order to achieve the above-mentioned object, in the control panel connecting device according to the second aspect of the present invention, the housing is provided adjacent to the terminal box of the machine tool, and the cable passages are opened on both opposing surfaces. At the same time, each of these cable inlets is closed by a two-divided lid, and a cable connecting both of them has each one of annular troughs at both ends sandwiched between the semi-circular arc-shaped portions of these lids. It is laid inside a bellows-shaped duct hose.

[0008]

The cable for connecting the control panel and the machine tool according to the first aspect of the invention is laid in the duct hose stretched between the two, so that the control panel and the machine tool are in close contact with each other. Can be connected linearly.

Since the cable for connecting the control panel and the machine tool according to the second aspect of the invention is laid in the bellows-shaped duct hose stretched between the two, the control panel and the machine tool are almost in close contact with each other. It is connected with good workability.

[0010]

【Example】

Example 1. An embodiment of claim 1 of the present invention will be described below with reference to FIGS. That is, in these drawings, 101 is a control panel of the present invention, and its housing 21 is an operation section region 50 and a control section region 5 sequentially from the front side.
1. The power supply unit region 52 is divided into regions, and the regions 51 and 52 are separated by a partition wall 22. 24 and 25 are areas 51 and 5
Two doors are provided for each of the two doors, one of the doors 24 is provided with the heat exchanger 8, and the other door 25 has a lower portion thereof as shown in FIG.
As described above, the intake port 25A provided with the dustproof filter 10 is opened, and the exhaust port 27A provided with the exhaust louver 28 on the ceiling surface 27 is formed as shown in FIG. 3 correspondingly.

Reference numeral 30 denotes an operating portion which is projected forward from the front wall 23 of the housing. On the front surface of the operating portion 30, there is provided a door 31 which is inclined so as to approach the machine tool side. The side is integrally communicated with the control area 51. 6 is a CRT escutcheon attached to the door 31, 7 is a sheet key switch, and the operation section region 50 and the control unit region 51 are cooled by the heat exchanger 8,
Further, since the power source region 52 has a large amount of heat generation, it is forcibly cooled by taking in outside air.

As shown in FIG. 3, a constant voltage power supply unit 1, an auxiliary power supply unit 2, a fan unit 3, a switching unit 4, and a resistor unit 5 for the forced cooling unit are arranged in the power supply area 52. ing. Reference numeral 22A in FIG. 3 denotes a plurality of square holes formed in the partition wall 22. Wiring between the control section region 51 and the power supply section region 52 is performed through the square holes 22A. Reference numeral 13 denotes a pair of elastic members that close the square holes 22A, and the wiring is performed by expanding both elastic members 13.

Reference numeral 32 is a recess formed in the left side wall 26 of the housing 21, and a cable passage 32A is opened in the recess 32 as shown in FIGS. 4 and 5, and the cable passage 32A is divided into two. It is closed by the lids 33 and 34. Each of these lids 33 and 34 is fastened and fixed with a screw 35, and each of them has a semi-circular hole 3 which becomes a round hole in an abutted state.
3A and 34A are formed. Reference numeral 12 is a cylindrical terminal member made of hard vinyl chloride or the like, and one outer peripheral groove 12A is formed on the outer peripheral edge thereof as shown in FIG. 5, and a spiral groove 12B is formed on the inner side of the other end. Has been done. And the lid 3
The end edge portions of the semicircular holes 33A and 34A of 3, 34 are fitted into the outer peripheral groove 12A, and as a result, each terminal member 12 is fixed in a sandwiched state at the joints of the lids 33 and 34. Become. 11 is a thin wall portion 11A and a spiral protrusion portion 11 as shown in FIG.
In the duct hose made of vinyl chloride having B, the spiral protrusion 11B is screwed into the spiral groove 12B of the terminal member 12.

Next, a machine tool electrically connected to the control panel 101 will be described. That is, reference numeral 102 in FIG. 2 is a machine tool such as an electric discharge machine, 60 is its bed, 61 is a column, 62 is the Z axis, 63 is a working tank, 64 is an XY table, and 65 is a terminal box. The machine tool 102 is installed so that its column 61 is substantially in close contact with the left side wall 26 of the control panel 101. In addition, the electric wiring of the machine tool 102 is concentrated in the terminal box 65, and the side of the terminal box 65 (control panel side) has a cable connection port 6 to the control panel 101.
5A is opened as shown in FIG. 5, and this cable conduction port 65A is closed by two split lids 33 and 34 having semicircular holes like the cable conduction port 32A of the control panel 101. Then, at the joint of the respective lids 33 and 34, the above-mentioned one end member 1 in which the duct hose 11 is screwed in the same manner as described above.
2 is fitted and fixed.

As described above, since the concave portion 32 of the control panel 101 is provided so as to face the cable passage port 65A of the terminal box, the duct hose 11 is arranged almost linearly between the two. The length is 100 to 2
It will be as short as 00 mm. Others, Figure 4
Reference numeral 14 in FIG. 5 denotes a plurality of signal cables for electrically connecting the control panel 101 and the machine tool 102, which are laid inside the duct hose 11. Reference numeral 15 denotes a connector connected to the terminal, which is inserted and connected to various units of the control panel 101. Similarly, 16 and 17 are a plurality of power cables and connectors. When the cables 14 and 16 are shipped, the connectors 15 and 17 are pulled out and the machine tool 1
It is attached to the 02 side and transported. Along with this, the duct hoses 11 having the terminal members 12 screwed on both ends are also attached to the machine tool 102 side and transported. At this time, the duct hose 11 is short and lightweight, and the cables 14 and 16 can be made shorter than before, so that handling at shipping becomes easy.

Next, the cable connection between the control panel 101 and the machine tool 102 installed at a predetermined position on site will be described. First, only the wider lid 34 on the control panel 101 side is removed, and the cable 1 is connected to the connector 1
The cables 14 and 16 including the cables 5 and 17 are put into the control panel 101. At this time, the terminal member 12 is attached to the semicircular groove 33A of the lid 33.
And temporarily fix it. When the cables 14 and 16 are connected, the lid 34 is attached. As shown in FIG. 4, the recess 3
Between the second side and the lid 34 is provided with a gap d _1, the lid 34 is only the d ₁ minute, shifted to the left in the figure, it cormorants is applied to the mounting surface "flush with the lid 33" it can. By shifting from this state to the right, the edge of the semicircular hole 34A of the lid 34 can be fitted into the outer peripheral groove 12A of the terminal member 12, and the lids 33, 3
4 is closely attached. Incidentally, 34B is a handle provided on the lid 34 to facilitate the above work.

[0017] Since the screw-in depth of the duct hose 11 and the terminal member 12 can be varied arbitrarily, for example, by shallow thread depth slightly as shown in FIG. 5, only _two minutes of illustration d control panel 101 The connection distance between the recess 32 and the terminal box 65 can be extended.

Example 2. Next, an embodiment of claim 2 of the present invention will be described with reference to FIGS. 1, 2, 6, 7 and 8. However, the same parts and corresponding parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The left side wall 26 of the housing 21 shown in FIG.
As shown in FIGS. 7 and 8, a cable communication port 26A is opened, and this cable communication port 26A is closed by two-part lids 33 and 34. And each of these lids 33,
34 are fastened and fixed with screws 35, and semi-arcuate portions 33A and 34A, which are round holes in an abutted state, are formed on each of them.

Reference numeral 18 denotes a bellows-shaped duct hose manufactured by blow molding using a material such as various synthetic resins such as polyethylene and polyester elastomer. A plurality of annular valley portions 18A and annular mountain portions 18B are alternately formed. Has been formed. The groove width dimension of the annular valley portion 18A is the above-mentioned lids 33, 3
The thickness of the groove is the same as that of No. 4, and the corners of the groove are formed substantially at right angles. The width of the annular peak portion 18B is made wider than the width of the annular valley portion 18A, and in consideration of the technical characteristics of blow molding, the corners of the groove and the corners on the outer surface side thereof have a shape with an appropriate roundness. Good. And the above-mentioned lids 33, 3
The end portions of the semicircular holes 33A and 34A of 4 are duct hoses 18
Is closely fitted to the third annular valley portion 18A from the left end (in FIG. 8) of the duct hose 18 as a result.
Will be fixed in a sandwiched state at the joint of the lids 33 and 34. The fitting position of the lids 33 and 34 can be selected at any one position from the plurality of annular valley portions 18A, and the selection will be described later.

Next, a machine tool electrically connected to the control panel 101 will be described. That is, 102 in FIG.
Is a machine tool such as an electric discharge machine, 60 is its head, 61
Is a column, 62 is the Z axis, 63 is a processing tank, 64 is an XY table, and 65 is a terminal box. The machine tool 102 is arranged such that the column 61 thereof is substantially in close contact with the left side wall 26 of the control panel 101. The electric wiring of the machine tool 102 is concentrated in the terminal box 65.
On the side surface (control panel side) of the control panel 101, there is provided a cable communication port 65A to the control panel 101 as shown in FIG. 8. This cable communication port 65A has a semicircular hole like the cable communication port 26A of the control panel 101. It is closed by the two divided lids 33 and 34. The right end (in FIG. 8) of the duct hose 18 is closely fitted and fixed to the joint of the respective lids 33 and 34 in the same manner as above.

As described above, since the cable passage 26A of the control panel 101 is formed so as to face the cable passage 65A of the terminal box, the duct hose 1
8 is almost linearly arranged between the two, and the length thereof can be as short as 80 to 150 mm.
The other structure is similar to that of the first embodiment, and thus the description thereof is omitted here.

Next, the cable connection between the control panel 101 installed at a predetermined position on the site and the machine tool 102 will be described with reference to FIGS. 7 and 8. First, only the wider lid 34 on the control panel 101 side is removed, and the cables 14 and 16 including the connectors 15 and 17 are inserted into the control panel 101 of FIG. At this time, the annular valley portion of the duct hose 18 is fitted into the semi-circular arc portion 33A of the lid 33 and temporarily fixed. Then, when the connection of the cables 14 and 16 is completed, the lid 34 is fitted to the lid 33 and attached. Incidentally, 34B is a handle provided on the lid 34 to facilitate the above operation.

The control panel 101 and the machine tool 102 are not always installed in accurate positions. Therefore, the duct hose 18 is used in consideration of the overall length, and the annular valley portion 1 to which the duct hose 18 fits against the fluctuation of the relative position of the both is used.
8A can be selected and the duct hose 18 having a bellows shape can be expanded and contracted by elastic deformation. In addition, since both ends of the duct hose can be sealed dustproof and waterproof and fixed only by fitting to the two split lids 33 and 34 having semi-circular arc-shaped parts without using lock nuts or the like, the joining work can be performed. Is extremely easy. In addition, the above-mentioned actual development 62-6
Even if the one disclosed in Japanese Patent No. 8089 is used for the one shown in FIGS. 2 to 8 of the present application, the terminal members at both ends of the conduit or duct hose cannot be used because they interfere with each other. On the other hand, the present invention can be applied even in a narrow space where the cable passages on both sides to be joined are 50 mm or less.

[0025]

As described above, the connecting device for the machine tool and the control panel thereof according to the first aspect of the present invention makes the housing of the control panel adjacent to the terminal box of the machine tool and allows the duct hose to move back and forth between them. Since the cable for both sides was laid inside this duct hose, there is no inconvenience caused by crawling the flexible electric wire protection tube on the floor unlike the conventional case.
In addition, the cables inside the duct hose will also be arranged in a short straight line with no bends, so handling during installation and transportation will be easier, and moreover, with the terminal box of the machine tool and the control panel. The distance can also be adjusted by moving the duct hose back and forth.

According to a second aspect of the present invention, there is provided a connecting device for a machine tool and a control panel thereof, wherein annular troughs formed at both ends of a bellows-shaped duct hose are fitted in a semi-circular arc-shaped portion of a two-piece lid of a cable passage opening. Since it is fixed and both connecting cables are laid in this duct hose, the cable conducting ports that are close and opposed to each other can be easily connected, and intrusion of water or the like can be prevented. Furthermore, the bellows-shaped duct hose according to the present invention has a plurality of thin annular valley portions and annular mountain portions alternately fixed to each other, so that it is excellent in elasticity and flexibility and can be installed in a machine tool and a control panel. It is possible to sufficiently cope with the position variation, and the workability during the installation is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a control panel of the present invention.

FIG. 2 is a plan view showing a combined installation state of the control panel and the machine tool of the present invention.

FIG. 3 is an enlarged vertical sectional view of a main part taken along the line III-III in FIG. (Example 1)

FIG. 4 is an enlarged vertical sectional view of a main part taken along line IV-IV in FIG. (Example 1)

5 is an enlarged vertical cross-sectional view of the main part of FIG. (Example 1)

6 is an enlarged vertical cross-sectional view of the main part taken along the line VI-VI of FIG. (Example 2)

7 is an enlarged vertical cross-sectional view of the main part taken along the line VII-VII of FIG. (Example 2)

8 is an enlarged vertical cross-sectional view of the main part of FIG. (Example 2)

FIG. 9 is a cross-sectional view showing a conventional flexible wire protection tube.

[Explanation of symbols]

 11 Duct Hose 12 Terminal Member 14, 16 Cable 18 Duct Hose 18A Annular Valley 18B Annular Crest 21 Enclosure 26A Enclosure Cable Through Port 32A Cable Through Port 33, 34 Lid 65 Terminal Box 65A Terminal Box Cable Through Port 101 Control Panel 102 machine tools

Claims (2)

[Claims] 1. A side face of a terminal box provided on a machine tool is installed so as to be close to a side face of a housing of a control panel of the machine tool, and a cable passage opening is formed on each of the facing faces. At the same time, a cylindrical terminal member that is in communication with the inside of each of the terminal box side and the control panel side is formed by a semi-arcuate portion formed at each joint of the two-divided lids that close each of the cable conduction ports. A cable for electrically connecting the machine tool and the control panel is laid in a duct hose which is sandwiched and whose end portions are connected to each of the two end members so as to be capable of advancing and retracting. A machine tool and its control panel connection device. 2. A side face of a terminal box provided on a machine tool is installed so as to be close to a side face of a housing of a control panel of the machine tool, and a cable passage opening is formed on each of the facing faces. At the same time, a semi-circular arc-shaped portion is formed at each joint of the two-divided lids that close the cable passages, and a plurality of thin annular valley portions and annular mountain portions are alternately formed over the entire length. Each one of the annular valley portions at both ends of the bellows-shaped duct hose is clamped at the joint of the semi-circular arc portion of the two-divided lid to connect the cable passages, and the machine tool is provided in the duct hose. A machine tool and its control panel connecting device, wherein a cable for electrically connecting the control panel and the control panel is laid.