JPH052861U - Machine tool control panel - Google Patents

Abstract

(57) [Summary] [Purpose] It can be installed almost in close contact with the machine tool without adversely affecting the machine tool, the dead space in the panel can be reduced and the size can be reduced, and the heat dissipation of the door-mounted servo amplifier is improved. Get a control panel for a machine tool that can. [Structure] A heat exchanger 35 is attached to the side wall 31 on the side of the machine tool 51, air after heat exchange is exhausted upward from the ceiling surface 33 of the control panel, and the side opposite to the side wall 31 is configured as a door 3. Then, the door 3 is provided with a servo amplifier 7 separated in the depth direction into an internal cooling part 7b and an external cooling part 7c by a dustproof partition part 7a, and the external cooling part 7c projects outward from the surface of the door 3. And a cover member (4) having ventilation holes at the top and bottom. [Effect] It can be closely attached to the machine tool, and the electronic equipment mounted on the door can be cooled well.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the control disconnection of a machine tool such as an electric discharge machine or a laser machine, and in particular, the entire area or an area for accommodating an NC control unit composed of a high-density printed circuit board is hermetically sealed, and the hermetically sealed area is indirectly sealed. It relates to a control panel equipped with a heat exchanger for air cooling.

[0002]

[Prior Art]

 3 is a perspective view showing a conventional example of a control panel of a machine tool such as an electric discharge machine or a laser machine, and FIG. 4 is a sectional view taken along line BB of FIG. In FIGS. 3 and 4, reference numeral 20 denotes a control panel, and its housing 21 is sequentially partitioned from the front side into an operation section area 22, a control section area 23, and a machining power supply section area 24. The operation section area 22 and the control section area 23 are configured as dust-tight closed areas, and are indirectly cooled by using a heat exchanger. The processing power supply area 24 stores the power supply, stabilized power supply, and other equipment for processing power that covers the amount of heat dissipated.There is no high-density mounting base, and the outside air is taken in because of the economic reasons for cooling. There is direct cooling that causes forced convection. An operation box 25 is provided with a door 26 on the front, a CRT and the like are housed inside, and is spatially integrated with the control area 23 by a large frontage. The door 26 is provided with a CRT escutcheon 27 and a seat key switch 28.

Doors 29 and 30 are provided on the right side surface of the housing 21 for the respective areas 23 and 24, and a side wall 31 is formed on the opposite side thereof. An intake window 32 equipped with a dust filter is provided below the door 30, and an exhaust louver 34 is provided on the ceiling surface 33 correspondingly.

On the other hand, a heat exchanger 35 is embedded and attached to the left side wall 31 of the control section region 23. The heat exchanger 35 is provided with a heat transfer plate 37 in which a plurality of flow paths are formed by folding it in a corrugated shape inside a box-shaped case 36, and an outside air fan 38 and an inside air fan 39 above and below the heat transfer plate 37. The upper and lower end surfaces of the flow path of the plate 37 are alternately sealed. Reference numeral 40 is an air suction hole outside the control panel, and 41 is an air suction hole inside the control panel. 42 is an inclined duct for exhausting the air outside the control panel after heat exchange from the ceiling 33. Reference numeral 43 is an exhaust louver disposed above the exhaust louver.

A processing power supply control unit 5 and an NC control unit 6 are disposed on the right side of the heat exchanger 35, avoiding the outside air fan 38 and the inside air fan 39, through a mounting bracket 10. The servo amplifier 7 is attached to the inner surface of the door 29 via a box-shaped mount 11. The servo amplifier 7 is separated in the depth direction by a dustproof partition 7a into an internal cooling unit 7b on which a printed circuit board, a power semiconductor, etc. are mounted and an external cooling unit 7c including a heat sink, a resistor, and the like. The external cooling unit 7c is embedded in the mounting base 11 while keeping the control panel airtight, and the door 29 is provided with ventilation holes 29a and 29a at upper and lower positions in the mounting base 11. There is. The external cooling unit 7c of the servo amplifier 7 is naturally cooled by natural convection (arrow C) passing through the ventilation holes 29a, 29a. 8 and 9 are control transformer I / O cases.

When the heat exchanger 35 is operated, the air in the control panel is forcibly convected in the direction of arrow A by the internal regulation fan 39. The air outside the control panel is forcibly convected in the arrow B direction by the outside air fan 38. At this time, the air inside the control panel and the air outside the control panel alternately convect in the flow path of the heat transfer plate 37 to exchange heat, and the control unit region 23 and the operation unit region 22 are indirectly cooled. The warmed outside air after the heat exchange is deflected in the direction opposite to the machine tool 51 by the inclined duct 42 and the exhaust louver 43, and is exhausted upward. The warmed outside air from the processing power source area 24 is also deflected by the exhaust louver 34 and exhausted upward. Therefore, since the machine tool 51 is not thermally adversely affected, the control panel 20 and the machine tool 51 can be installed almost in close contact with each other, and the installation floor area can be reduced.

[0007]

[Problems to be solved by the device]

 The control area 23 of the control panel 20 of the machine tool configured as described above, when viewed from the maintenance / inspection side (right side), has the servo amplifier 7 on the door 29, the main equipment such as the NC control unit 6 in the center, and the left side. Heat exchangers 35 are arranged on the face wall 31 to increase the packaging density. Therefore, although the control panel 20 is downsized in the depth direction, the width of the entire control panel 20 has to be increased due to the required mounting dimensions of the control area 23. Furthermore, since the external cooling unit 7c of the servo amplifier 7 is located inside the mounting base 11, there is a drawback that natural convection is not performed favorably and the temperature rise becomes high.

The present invention has been made to solve the above problems, and can be installed almost in close contact with a machine tool without exerting a thermal adverse effect on the machine tool, and has a small dead space in the panel and a small size. The purpose is to obtain a control panel for machine tools that can improve the heat dissipation of the door-mounted servo amplifier.

[0009]

[Means for Solving the Problems]

 The control panel of the machine tool according to the present invention has a side surface on the machine tool side as a wall surface, and a heat exchanger is attached to the side wall to exhaust air after heat exchange upward from the ceiling surface of the control panel. At the same time, the opposite side of the side wall is configured as a door, and an electronic device separated in the depth direction into an internal cooling part and an external cooling part by a dustproof partition is attached to the door. The main control unit is installed between the heat exchanger and the external cooling section of the electronic device, which is separated into the internal cooling section and the external cooling section, is attached so as to project outside the door surface and at least have ventilation holes at the top and bottom. It is covered with a cover member provided.

[0010]

[Action]

 According to the present invention, the position of the right side surface of the control panel can be set back to the position of the dustproof partition of the electronic device attached to the door, and the depth of the external cooling part of the electronic device can be adjusted to the entire control panel. The width can be reduced. Further, heat dissipation from the external cooling section of the electronic device, which is projected from the door surface on the right side, is promoted.

[0011]

【Example】

 Example 1. 1 is a perspective view showing an embodiment of a control panel for a machine tool according to the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG. In FIGS. 1 and 2, reference numeral 1 denotes a control panel, and its housing 2 is conventionally divided into an operation section area 22, a control section area 23, and a machining power supply section area 24 in order from the front side. A servo amplifier 7 including an internal cooling unit 7b and an external cooling unit 7c is attached to the door 3 of the control unit area 23. The servo amplifier 7 is mounted so that its external cooling section 7c projects outward from the surface of the door 3, and the door 3 is dust-proof sealed by the dust-proof partition 7a. Reference numeral 4 is a lid-like cover that covers the external cooling unit 7c. Ventilation holes 4a and 4b are provided above and below the cover 4, and are cooled by natural convection indicated by an arrow D. Since there are no obstacles to the air flow in the upper part of the ventilation hole 4a and the lower part of the ventilation hole 4b, the flow velocity of the natural convection is large and is further promoted by the stack effect of the cover 4. Therefore, the heat radiation from the external cooling unit 7c is good, and the temperature rise is reduced. Further, the cover 4 can prevent accidental contact with the high temperature part of the external cooling part 7c including the heat sink and the resistor.

Since the external cooling unit 7c of the servo amplifier 7 is mounted so as to project outward from the surface of the door 3, the control panel 1 is smaller in width dimension by the dimension D shown in FIG. 2 than the conventional control panel 20. It is configured. As the width dimension is reduced, the total floor area for installation is also reduced, and the steel material used for the housing 2 is reduced. The control panel 1 has the same structure as the control panel 20 except for the above-described reduction of the width dimension and the door 3 portion described above, and therefore the description thereof will be omitted.

[0013]

[Effect of the device]

 As described above, according to the present invention, the side surface on the machine tool side is configured as a wall surface, a heat exchanger is attached to this side wall, and the air after heat exchange is exhausted upward from the ceiling surface of the control panel. At the same time, the opposite side of the side wall is configured as a door, and an electronic device separated in the depth direction into an internal cooling part and an external cooling part by a dustproof partition is attached to the door. Since the main control unit was placed between the heat exchanger and the external cooling section of the electronic device, which was separated into the internal cooling section and the external cooling section, was attached so as to project outside the door surface, so that it can be installed in almost any machine tool. The effect is to obtain a small control panel that can be closely attached and that can cool the electronic equipment mounted on the door.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a control panel of a machine tool according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view of a control panel of a conventional machine tool.

FIG. 4 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 control panel 2 housing 3 door 4 cover member 6 NC control unit 7 servo amplifier 7a dustproof partition 7b internal cooling unit 7c external cooling unit 35 heat exchanger

Claims (1)

[Claims for utility model registration] [Claim 1] A heat exchanger for air cooling of a control panel for alternately convection air outside the control panel and air inside the control panel alternately in a plurality of flow paths for heat exchange arranged in parallel. A control panel of a machine tool having one side wall disposed in the vicinity of the machine tool, wherein the heat exchanger is configured so that air after heat exchange is exhausted upward from a ceiling surface of the control panel. Is embedded in the one side wall, and the opposite side of the side wall is configured as a door, and an electronic device separated into an internal cooling section and an external cooling section by a dustproof partition is attached to the door. The main control unit is arranged between the electronic device and the heat exchanger, and the external cooling part of the electronic device separated into the internal cooling part and the external cooling part projects outward from the door surface. Attached at least up and down ventilation holes Control panel of the machine tool, characterized in that it is covered with a cover member having.