JPH0714119B2 - control panel - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a control panel for machine tools such as an electric discharge machine and a laser machine, and more specifically, a control panel having excellent heat dissipation and operability. Regarding the control panel.

[Prior Art] In a control panel of a machine tool such as an electric discharge machine or a laser machine, an operation unit including a CRT, a sheet key switch, etc. is provided on the machine tool so that an electric operation can be easily performed while monitoring a machining state. It is desirable to dispose it near the Z-axis. One method is to hang the operation unit as a pendant operation box from a bed of a machine tool, but it requires an arm with rotating shafts at both ends and a separate heat exchanger for the pendant operation box. Further, there is a problem that the number of wiring steps between the control panel and the pendant operation box is large, and it takes time to separate the pendant operation box during transportation, resulting in high manufacturing cost.

Therefore, as another method, there is a method in which the operation portion is integrally formed so as to project from the front wall of the basic portion of the control panel housing. The protruding operation section has a CRT and a seat key switch at its tip and is spatially integrated with the basic section of the control panel housing by a large opening to be placed in the basic section of the control panel housing. It was indirectly air-cooled by a heat exchanger provided (see, for example, Japanese Patent Application No. 1-7096).

[Problems to be Solved by the Invention] The above-mentioned conventional operation part of the control panel, which is formed protruding, is economical because it is integrated with the control panel, but the positions of the CRT and the seat key switch are fixed. Therefore, there are the following problems. In other words, if an operating part consisting of a CRT, sheet key switch, etc. is installed near the Z-axis of the machine tool, it is easy to operate electrically while monitoring the machining status, but when a program is input for a long time, the machine tool The movement of the XY table hinders access to the CRT and sheet key switch, causing fatigue and was difficult to use. Also, it sometimes became an obstacle when setting a large workpiece on the XY table.

The present invention has been made to solve the above problems, and is to obtain a control panel that is economical, allows the operation unit and the housing to be integrally transported, has excellent heat dissipation and operability, and has a small installation area. With the goal.

[Means for Solving the Problems] A control panel according to the present invention is provided with upper and lower cylindrical shafts fitted to upper and lower horizontal portions formed on a front wall of a housing, and the upper and lower cylindrical shafts are respectively fitted. An arm that is fitted to the upper and lower surfaces and rotatably projects forward from between the upper and lower horizontal portions of the front wall of the housing is provided, and an electric device such as a CRT or sheet key switch is attached to the tip of the arm. The operation box is fixed.

Further, the rotation angle of the arm is regulated through the cutout portion of the cylindrical shaft, the inside of the arm is divided into upper and lower parts by a partition plate, and the fan is arranged at least in the upper or lower part.

Further, the partition plate is arranged so as to incline downward so as to approach the CRT mount in the operation box on the tip side of the arm, and a fan is arranged below the horizontal part of the partition plate via a vertical mount plate. It was set up.

[Operation] In the control panel of the present invention, an operation box to which electric devices such as a CRT and a seat key switch are attached is rotatably supported via an arm, and can be electrically operated from different positions and angles. The arm is formed in a rectangular shape in vertical cross-section, the upper and lower surfaces of which are supported, and in particular, the rigidity in the vertical direction is essentially large.

Further, the stopper abuts on the notch of the cylindrical shaft to regulate the rotation angle of the arm, and the fans arranged in the upper and lower partitions by the partition plate allow the air in the housing and the operation box to move. Forced circulation convection. The downwardly inclined portion of the partition plate on the arm tip side deflects the flow of the forced circulation convection to the lower portion of the CRT, and shields the leakage magnetism from the fan.

[Embodiment of the Invention] FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a II-II sectional view thereof, FIG. 3 is a III-III sectional view of FIG. 1, and FIG.
FIG. 5 is an enlarged view of a main part of the drawing, and FIG. 5 is a sectional view taken along line VV of FIG. In the figure, (1) is a control panel according to the present invention, and its housing is sequentially partitioned from the front side into an operation section area (6), a control section area (2), and a machining power supply section area (5). . The control unit region (2) and the processing power supply unit region (5) form a basic portion (10) of the housing, and the regions (2) and (5) are separated by a partition wall (51). (7) is the basic part (1
It is an operation box protruding forward from the front wall (21) of (0) via the arm (71).

The operation section area (6) and the control section area (2) are dust-tightly configured as a closed area and are indirectly cooled by using a heat exchanger. In addition, the processing power supply area (5) accommodates the processing power supply equipment with a large amount of heat dissipation, such as the power base and the stabilized power supply, does not have a high-density mounting board, and because of the economic reasons required for cooling, the outside air of the panel is removed. Direct cooling is used to capture and force forced convection.

Each area (2), (5) is on the right side of the basic part (10) of the housing.
Doors (22) and (52) are provided for each of them, and the opposite side is configured as a side wall (23). An intake window (54) equipped with a dustproof filter is arranged below the door (52), and an exhaust louver (55) is correspondingly provided on the ceiling surface (53).
Is provided.

A heat exchanger (25) is provided on the left side wall (23) of the control area (2).
The heat exchanger (25) has a heat transfer plate (28), an outside air fan (29), and an inside air fan (30) in a case (26) and a cover (27). (31) is an outside air intake hole, and (32) is an inside air intake hole. (33) is an exhaust louver for warmed outside air after heat exchange, and (34) is an inclined duct connecting the exhaust louver (33) and the upper end of the heat exchanger (25). The machining power supply control unit (11) and the NC control unit (12) are mounted on the right side of the heat exchanger (25) avoiding the outside air fan (29) and the inside air fan (30) via the mounting bracket (35). There is. Further, the servo amplifier (13) is attached to the inner surface of the door (22) via a box-shaped mounting base (36), and the heat sink portion (37) of the servo amplifier (13) is attached.
Is embedded in the mounting base (36) while maintaining airtightness with the main body. Reference numeral (38) is a cooling fan provided at the center of the servo amplifier (13). The door (22) is provided with wind windows (24) above and below the mount (36) and at the position of the cooling fan (38).
The heat sink (37) is directly cooled by the cooling fan (38) as indicated by the arrow. (14) and (15) are the control transformer and I / O case, respectively.

A square hole (40) is formed in the front wall (21) of the basic part (10) of the housing, and a shaft mount (41) is fitted and fixed therein. The shaft mount (41) is composed of a concave vertical part (41a), an upper horizontal part (41b), a lower horizontal part (41c), and a flange part (41d), and the upper horizontal part (41b) has a round hole (41e). And a seat plate (42) having a round hole (42a) coinciding with the round hole (41e) is welded to the upper surface thereof. (43) is an upper cylindrical shaft, the shaft flange plate (44) is welded to its upper end, and a small diameter part (43a) is formed at its lower end. The upper cylindrical shaft (43) is inserted into the round holes (41e), (42a), and the shaft flange plate (44) is fastened and fixed to the seat plate (42) with bolts (45). (46) is a lower cylindrical shaft, which is fitted and fixed to the lower horizontal part (41c) of the shaft mount (41), and has a small diameter part (46b) formed above the intermediate flange part (46a).

The arm (71) is formed in a rectangular vertical cross section having a height substantially equal to the height of the operation box (7), and has an opening (71) for working on the right side surface.
c) is provided, and a flange (71d) for fixing the operation box (7) is formed at the tip portion. A gap slightly larger than the height of the small diameter portion (46b) of the lower cylindrical shaft (46) is provided between the upper surface of the arm (71) and the upper horizontal portion (41b) of the shaft mounting base. Arm (71)
And the small diameter part (46b) of the lower cylindrical shaft is fitted into the lower shaft hole (71b) of the arm. Then, the upper shaft hole (71
The small diameter part (43a) of the upper cylindrical shaft (43) is fitted to (a), and the shaft flange plate (44) is fastened and fixed to the seat plate (42). The round holes (41e) and (42a) are formed to have a diameter larger than that of the upper cylindrical shaft (43), and the fixed position of the upper cylindrical shaft (43) is adjusted horizontally so that the lower cylindrical shaft (46) and the shaft center are Can be matched.
An L bending portion (44a) for screwing the bolt (45a) is formed behind the shaft flange plate (44).
The upper cylinder shaft (43) together with the arm (71) and operation box (7) is made by abutting the tip of the bolt (45a) against the side surface of the seat plate (42) in the temporarily tightened state of 5) and changing the screwing depth. You can adjust the position in the front-back direction. In this way, the arm (71) and the operation box (7) are rotatably supported.

Since the arm (71) configured as described above has a large vertical sectional shape, it has essentially great rigidity. In particular, the rigidity in the vertical direction can be increased, and since the rotation support shaft is also provided on the upper and lower surfaces of the arm (71), it can sufficiently withstand the transport vibration. Therefore, the operation box (7) can be transported in a completely assembled state without being separated.

(72) is a vertical metal fitting, which is welded to the upper part of the arm (71). (73) is a stopper, which is composed of a vertical leg (73a) and a horizontal leg (73b), and the vertical leg (73a) is a vertical metal fitting (7).
It is fixed to 2) with bolts (45b). Horizontal axis (73b)
Slanted edges (73c) and (73d) are formed on the left and right sides, respectively, while the fan-shaped notch (43b) is formed in front of the small diameter portion (43a) of the upper cylindrical shaft (43). ) Has been formed. The horizontal leg (73b) of the stopper has a notch (43
b), the left and right ends of the notch (43b) and the slanted edges (73c) and (73d) contact each other, and the arm (7
The rotation angle of 1) is restricted. This rotation angle can be set independently on the left and right by changing the gap between the left and right ends of the notch (43b) and the inclined edges (73c) and (73d).

Reference numeral (74) is a partition plate for partitioning the inside of the arm (71) into upper and lower parts, and includes a horizontal portion (74a) and an inclined portion (7) bent forward and downward.
4b) and. (75) is the horizontal part (74
A circulation convection fan (16) is mounted on the fan mounting plate arranged in the lower part of a). A horizontal portion (75a) is formed at the lower end of the fan mounting plate (75), and the lower surface of the fan mounting plate (75) and the lower surface of the arm (71) are covered with an elastic member (76) such as foamed rubber so that the arm (71) is closed. The inner lower compartment is further divided into front and rear. Reference numeral (77) is a lid member for closing the opening (71c) of the arm.

A CRT (17) is mounted inside the operation box (7) via a frame (78), and a door (79) is arranged on the front side. A square hole (7f) is formed on the back surface of the operation box (7), and the arm (7f)
1), through the upper and lower cylindrical shafts (43), (46)
It is spatially continuous with 0). (80) is a CRT escalation attached to the door (79), (81) is a sheet key switch, and (82) is an FDD attached to the right side surface of the operation box (7). Reference numeral (83) is a handle attached to the lower portion of the door (79) and is provided for the convenience of rotation of the operation box (7). CRT (17), sheet key switch (81), FDD
The cable (18) to which (82) etc. are connected to electrical equipment,
The elastic member (76) is compressed and the fan mounting plate horizontal part (75a)
Underneath, through the lower cylindrical shaft (46) and the basic case (10)
Is connected to the electrical equipment inside. The cable (18) is fixed by the elastic member (76), and the contact with the lower cylindrical shaft (46) is prevented, so that the operation box (7) is prevented from being damaged during rotation. The wiring of the cable (18) is well opened at a low position and has a large opening. The arm opening (71c)
Can be easily done using.

Next, the cooling means for the operation section area (7) and the control section area (2) will be described. When the heat exchanger (25) is activated, the second
As shown by the solid line arrow in the figure, the air outside the control panel is sucked in through the outside air intake hole (31), and is discharged from the exhaust louver (33) after heat exchange. Further, as shown by the broken line arrow, the air in the control section region (2) is sucked in from the inside air intake hole (32),
It is cooled and returned to the inside from the inside air fan (30). The control area (2) is indirectly cooled by this forced circulation convection. Further, a part of the air rising from the inside air fan (30) and rising is, as indicated by a broken line arrow in FIG.
6) is sucked in by a circulating convection fan (16),
It is sent into the operation box (7). The tip of this airflow is CR
Inclined part (74b) of the partition plate (74) close to the T frame (78)
It is deflected downward by the CRT pedestal (78) and then ascends while climbing into the compartment above the arm (71) and from the upper cylindrical shaft (43) into the control area (2). It is returned and sucked into the inner unit intake hole (32) of the heat exchanger (25). This forced circulation convection is caused by the inclined part (74b) of the partition plate (74).
The short-circuiting circulation convection is prevented from occurring at the back surface of the operating portion (7) by the deflection effect of (3), and the entire operating portion (7) and the operating portion region (6) are indirectly and well cooled.

The conventional pendant operation box requires a heat exchanger dedicated to the operation box because it cannot perform forced circulation convection as described above.
The present invention does not require a heat exchanger dedicated to the operation box, is inexpensive accordingly, and allows the operation box to be constructed in a small size.

The CRT (17) is apt to cause screen shake noise disturbance due to an external magnetic field, and this external magnetic field is often due to a magnetic flux leaked from a transformer or a cooling fan mounted in close proximity. The leakage magnetic flux from the circulating convection fan (16) is magnetically shielded by the inclined portion (74b) of the partition plate (74), so that the CRT (1
7) Noise interference is prevented.

Next, a preferred embodiment in which a control board according to another embodiment of the present invention is combined with a machine tool will be described with reference to the plan view of FIG. In the figure, (90) is a machine tool such as an electric discharge machine, and (9)
1) is its bed, (92) is a column, (93) is a Z-axis having a discharge electrode, (94) is a processing tank in which a workpiece is set,
(95) is an XY table, and (96) is a terminal box to which electrical wiring is relayed. The basic body part (10) of the control panel (1a), the mounting base (41) and the arm (71) are the same as those in the embodiment shown in FIGS. The housing base (10) is a bed (9
It is installed close to the rear side of 1) and the right side of the column (92).

Reference numeral (7a) is an operation box that projects above the processing tank (94), and its front flange portion (7b) is provided with the same door (79) as in FIG. Then, the rear end (7c) is fixed to the arm (71) at the left end side (when viewed from the front), and the operation box (7a) is offset rightward from the housing base (10). As a result, as shown by the solid line in FIG. 6, when the front surface of the door (79) is rotated so as to face the Z axis (93) side so that it is easy to electrically operate while monitoring the machining state, Interference between the left side surface portion (7d) of the operation box (7a) and the Z axis (93) is prevented. Operation box (7
The right side surface portion (7e) of a) is inclined so as to be on the same line as the surfaces of the doors (22) and (52) of the housing basic portion (10) at the above-mentioned processing position. This is the control panel (1
This is to prevent the maintenance area from protruding to the maintenance area when passing the right side of the operation box (7a) for maintenance.

In comparison with a conventional pendant operation box that is hung from an arm having a rotary shaft at both ends, the rotary shaft of the present invention has only one side, so it cannot be denied that it lacks flexibility in setting the position of the operation box. However, by selecting the fixed position and the rotation angle range of the arm (71) to the back surface part (7c) as described above, the above problem can be solved and the total installation area can be reduced.

When inputting a program for a long time, the operation box (7a) is rotated to the right as shown by the chain double-dashed line in FIG. In this position, the operator is not disturbed by the XY table (95) and the door (79)
You can get close to the surface of the and can enter the program in a comfortable posture. Moreover, the setting of the workpiece in the processing tank (94) can be performed without being disturbed by the operation box (7a).

Next, another embodiment will be described. In the above embodiment, the case where the upper and lower cylindrical shafts (43) and (46) are mounted on the shaft mounting base (41) fitted inside the housing front wall (21) is shown. A box-shaped shaft mount may be formed so as to project from the housing front wall (21) and be arranged outside the housing front wall (21). Further, the rotation angle regulation mechanism including the notch (43b) of the upper cylindrical shaft (43) and the stopper (73) may be arranged on the lower cylindrical shaft (46) side.

Further, in the above embodiment, the fan (16) for circulating convection.
Is arranged so as to push air into the operation box (7). However, in order to suck in air from the operation box (7), the upper compartment of the arm (71) and the upper cylindrical shaft (43) It may be arranged on the upper surface, and further, both fans for pushing and sucking into the arm (71) may be arranged to promote forced circulation convection in the operation box (7).

Furthermore, although the cable (18) connected to the electric device in the operation box (7) is wired through the lower cylindrical shaft (46) in the above embodiment, it may be wired through the upper cylindrical shaft (43). . The signal cable (18) has a lower cylindrical shaft (46)
If the high-voltage (AC) cable is separately wired so as to pass through the upper cylindrical shaft (43), noise resistance can be improved.

[Advantages of the Invention] As described above, according to the present invention, since the operation box is fixed to the arm rotatably supported by the upper and lower cylindrical shafts, the rigidity in the vertical direction can be particularly increased. Therefore, it is possible to sufficiently withstand the transportation vibration, and it is possible to transport the operation box without separating it.

Further, since the rotation angle is regulated by the stopper, it is possible to prevent the interference with the machine tool and the like, and to set the position to be easy to operate.

Further, the partition plate divides the arm into upper and lower parts, and the fan arranged in the arm is configured to forcibly circulate and convect the air in the housing, so that the heat exchanger dedicated to the operation box is not required, and the operation box Can be small and lightweight. Further, the magnetic flux leaking from the fan arranged in the arm can be shielded by the downwardly inclined portion of the partition plate.

Further, the operation box can be fixed to the arm at an arbitrary position on the back surface according to the arrangement with the machine tool, so that there is an effect that the installation area can be reduced and an economical control panel can be obtained as a whole.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a control panel according to the present invention,
2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is III in FIG.
-III sectional view, FIG. 4 is an enlarged vertical sectional view of an essential part of FIG. 3, FIG. 5 is a VV sectional view of FIG. 4, and FIG. 6 is a control panel of another embodiment of the present invention. It is a top view of the state installed in combination with a machine. In the figure, (1) is a control panel, (2) is a control area,
(5) is a processing power supply area, (6) is an operation area,
(7) and (7a) are operation boxes, (10) is a housing basic part, and (16)
Is a circulating convection fan, (17) is a CRT, (18) is a cable,
(21) is a front wall, (22), (52) is a door, (25) is a heat exchanger, (29) is an outside air fan, (30) is an inside air fan, (41)
Is the shaft mount, (43) is the upper cylindrical shaft, (43b) is the notch, and (4
6) is the lower cylindrical shaft, (71) is the arm, (73) is the stopper,
(74) is a partition plate, (74b) is a deflection part, (76) is an elastic member, (79) is an operation box door, and (90) is a machine tool. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (4)

[Claims] 1. An upper and lower cylindrical shaft fitted respectively to upper and lower horizontal portions formed on a housing front wall, and upper and lower cylindrical shafts fitted respectively to upper and lower surfaces of the housing front wall. An arm protruding forward from between the horizontal parts, a CRT,
An electric box such as a seat key switch is attached and its back is fixed to the tip of the arm, and an electric box attached to this operation box is connected to the electric box and passes through the inside of the arm inside either the upper or lower cylindrical shaft. And a cable wired inside the housing through the control panel. 2. An upper cylindrical shaft fitted to the upper surface of the arm is fixed to a horizontal portion above the front wall of the housing via a flange plate fixed to the inside of the housing to rotatably support the arm. In addition, a notch is provided in a predetermined range of the protruding portion in the arm of the upper cylindrical shaft or the lower cylindrical shaft, and the rotation angle of the arm is regulated by a stopper fixed to the arm and located in the notched portion. The control panel according to claim 1. 3. The inside of the arm is divided into upper and lower parts by a partition plate, and a fan is disposed in at least an upper part or a lower part of the arm, and the air in the housing is sucked from the lower cylindrical shaft to the upper part via the upper part to the upper part. The control panel according to claim 1, wherein forced circulation convection is performed so as to return from the cylindrical shaft into the housing. 4. The partition plate is inclined downward at the tip end side of the arm so as to approach the CRT mounting base in the operation box, and a fan is arranged below the horizontal portion of the partition plate via a vertical mounting plate. It is characterized in that an elastic member is closed between the fan mounting plate and the lower surface of the arm, and the elastic member is compressed to connect a cable connected to an electric device of the operation box. The control panel according to claim 1.