JP2008157477A - Clean unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce worker's burden as it is unnecessary to lift an object up high when a worker lifts the object up at a working face of a work table to apply air thereto. <P>SOLUTION: This clean unit for removing dust attached to the object by applying air to the object by the worker, has a partition for defining a room partitioned from the outside, a clean air supply portion for supplying clean air into the room, an air gun disposed in the room for applying air toward the optional direction, the work table having the working face having a flat surface inclined to a horizontal face at least when air is applied to the object, and a return portion extending upward from a lower end of the working face when air is applied to the object, and disposed in the room, and an air suction portion for sucking air in the room. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a clean unit capable of performing various operations in a simple room supplied with clean air from which dust is removed.

  In manufacturing factories such as semiconductors and precision equipment, dust in the air has an adverse effect on products, so a high-cleanness work space (hereinafter referred to as “clean space”) to which clean air from which the dust has been removed is supplied. Is used. Many of such clean spaces are provided with a fan filter unit including a HEPA filter and a fan, and clean air is supplied by the fan filter unit.

As the clean space as described above becomes wider, a larger number of fan filter units are required, resulting in higher power consumption. Therefore, a clean unit has been proposed in which only the worker's work space is isolated from the outside (see, for example, Patent Document 1).
JP 2003-83579 A

  In the clean unit disclosed in Patent Document 1, for example, the periphery of a conveyor or a work table is covered with a cover, and an operator works by inserting a hand through the opening of the cover. At this time, since the conveyor and the work table are always fixed at a fixed position, when the worker applies air with an air gun or the like to the object to be worked to remove dust or inspect the object, It will be lifted high. Therefore, the burden on the operator is large, and fatigue is likely to accumulate in repeated operations. Moreover, since the height from the work surface of the conveyor and the work table to the ceiling is not so large, the space above the work surface is narrow when the object is lifted.

  In order to solve the above-described problem, according to the first embodiment of the present invention, a clean unit that removes dust and the like attached to an object by blowing air onto the object is isolated from the outside. A partition that forms the interior of the room, a clean air supply unit that supplies clean air to the room, an air gun that is arranged in the room and blows air in an arbitrary direction, and at least when the air is blown onto the object, A work surface having an inclined plane, and a return portion extending upward from the lower end of the work surface when air is blown onto the object, and a work table disposed in the room, and an intake air for sucking in the air in the room A clean unit is provided. According to such a clean unit, when the operator lifts the object on the work surface of the work table and applies air, it is not necessary to lift the object high, so that the burden on the operator can be reduced. it can. Also, it is possible to work with air in a wider space. Moreover, even when the work surface is tilted to ensure a wide space, it is possible to prevent an object on the work surface from falling.

  Moreover, it is preferable that the said clean unit is further provided with the work-table drive part which switches the plane of a work surface to the state inclined with respect to the horizontal surface, and the state parallel to a horizontal surface. Thereby, when the operator does not perform an operation of lifting an object on the work surface of the work table and applying air, the plane of the work surface can be made parallel to the horizontal surface. Therefore, the work surface can be placed horizontally and the object can be placed to perform operations such as assembly.

  In addition, the work table drive unit has a pedal switch arranged in the vicinity of the foot during the work of the worker, and when it is detected that the pedal switch is operated, the plane of the work surface is inclined to the horizontal plane. It is preferable to be in a state. As a result, the operator can operate the worktable drive unit by operating the pedal switch without using a hand, so that the work is not interrupted when the worktable drive unit is operated.

  In this case, the air gun further includes a detection unit that detects whether the air gun is in use or not in use, and the work table drive unit detects that the air gun is in use In addition, when it is detected that the pedal switch is stepped on with a foot, the plane of the work surface is inclined with respect to the horizontal plane, and the work platform drive unit confirms that the air gun is not in use. When the detection unit is detecting, or when it is detected that the pedal switch is not stepped on with a foot, it is preferable that the plane of the work surface is parallel to the horizontal plane. Thereby, it can prevent that a work surface inclines accidentally.

  Further, in the clean unit, it is preferable that the intake section intakes air when the plane of the work surface is inclined with respect to the horizontal plane. As a result, the intake section can be operated only when the worker is blowing air against the object while the work surface is tilted, so the intake section can be operated efficiently.

  The above summary of the invention does not enumerate all the necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

  Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the scope of claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.

  FIG. 1 is a perspective view showing an appearance of a clean unit 10 according to an embodiment of the present invention. The front side of FIG. 1 is the front side of the clean unit 10, and the back side of FIG. 1 is the back side. As shown in FIG. 1, the clean unit 10 includes a frame 20, a partition wall 30 which is fixed to the frame 20 and forms a room isolated from the outside, and is fixed to the upper side of the frame 20 to enter the room from the ceiling side of the room. A clean air supply unit 40 that supplies clean air and an intake unit 60 that intakes the indoor air are provided. An arm cover 50 is disposed on one surface of the partition wall 30 on the front side. Furthermore, a pedal switch 70 that is electrically connected to a control unit 250 of a worktable drive unit 200 described later via a wiring 71 is disposed on the floor surface below the frame 20. The position where the pedal switch 70 is arranged is preferably in the vicinity of the feet of the worker 500 when the worker 500 described later works by inserting both arms into the room of the clean unit 10. The partition wall 30 is made of, for example, a transparent acrylic plate so that the room can be seen when the worker 500 works.

  FIG. 2 is a perspective view showing an appearance when the partition wall 30 of the clean unit 10 is removed. As shown in FIG. 2, a work table 100 is disposed in a room isolated from the outside by the partition wall 30. The work table 100 includes a base plate 101, a return portion 103, a rubber sheet 105, and a hinge 107. The base plate 101 is substantially flat and has a flat surface portion, and is attached to the frame 20 via a hinge 107 disposed at one end on the front side thereof. Further, the upper surface of the base plate 101 including the planar portion is a work surface 110 on which the operator 500 performs various operations, as will be described later. A rubber sheet 105 is further attached to the work surface 110 of the base plate 101. It is attached. Further, a return portion 103 is disposed at one end on the back surface side of the base plate 101. The return portion 103 is formed so as to protrude vertically upward when the work table 100 is fixed so as to be orthogonal to the flat portion of the base plate 101 and to be horizontal.

  As shown in FIG. 2, a holster 83 fixed to the frame 20 and an air gun 80 held by the holster 83 are arranged in the room. A telescopic air hose 81 is connected to the air gun 80, and high-pressure air can be blown in an arbitrary direction through the air hose 81 from an external compressor (not shown). Further, a detection unit 85 is attached to the holster 83. The detection unit 85 is an electromagnetic that switches between a state in which the air is supplied to the control unit 250 of the worktable drive unit 200, which will be described later, and the air gun 80, and a state in which the supply is stopped, via the wiring 87. The valve 89 is electrically connected. The detecting unit 85 detects whether the air gun 80 is held by the holster 83 or is pulled out of the holster 83, so that the air gun 80 is in use or unused. Detect if there is. For the detection unit 85, for example, a photoelectric sensor or the like is used.

  Moreover, as shown in FIGS. 1 and 2, the intake section 60 is arranged from the lower side of the work table 100 to the rear side. The intake section 60 includes a chute 61 disposed on the lower side of the work table 100 and fixed to the frame 20, an intake hose 65 having one end connected to the chute 61 via an intake port 63 described later, and an intake hose 65. The other end of the air intake device 69 is connected. The intake device 69 is electrically connected to a control unit 250 of the worktable drive unit 200 described later via a wiring 67.

  FIG. 3 is a schematic cross-sectional view showing a state where the worker 500 performs work when the plane portion of the work table 100 is in a state parallel to the horizontal plane. FIG. 4 is a schematic cross-sectional view showing a state where the worker 500 performs work when the plane portion of the work table 100 is tilted with respect to the horizontal plane. As shown in FIGS. 3 and 4, the clean air supply unit 40 includes an outside air intake 41, a fan 43, a filter 45, and a supply port 47, and air taken from the outside air intake 41 is rotated by the rotation of the fan 43. Clean air is supplied from the supply port 47 into the room through the filter 45. For example, a HEPA filter is used as the filter 45. The clean air supply unit 40 may continuously supply clean air into the room when the worker 500 is working. For example, the clean air supply unit 40 detects the cleanliness of the room and the cleanliness is below a specified level. Clean air may be supplied.

  Further, as shown in FIGS. 3 and 4, a work table drive unit 200 including an air cylinder 210 and a control unit 250 is disposed below the work table 100. The air cylinder 210 has a flange 220 and a rod 230 and is connected to one end of each of the two air hoses 260. The air cylinder 210 is fixed to the chute 61 by screws at the flange 220. The air cylinder 210 is supplied with high-pressure air from one of the air hoses 260 from an external compressor (not shown), and the air in the air cylinder 210 is passed through the other of the air hoses 260. Can be exhausted. The controller 250 controls the supply of the air to the air cylinder 210 and the exhaust of the air from the air cylinder 210.

  When the high-pressure air is supplied to the air cylinder 210, the rod 230 extends vertically upward as shown in FIG. At this time, the air cylinder 210 is arranged at the tip of the rod 230, and the plane portion of the work surface 110 of the work table 100 is parallel to the horizontal plane via the contact portion 240 that contacts the lower surface of the base plate 101 of the work table 100. The base plate 101 is supported from below so as to achieve a stable state. Here, the worker 500 stands on the outside of the partition wall 30 on the front side of the clean unit 10 and inserts both arms into the room by passing both arms through the arm cover 50. In this state, the worker 500 places the object 600 on the work surface 110 of the work table 100 and performs work such as assembly.

  When the worker 500 finishes the work of placing the object 600 on the work surface 110, the worker 500 continues to lift the object 600 and perform the air cleaning work. This air cleaning operation is an operation for removing dust or the like attached to the surface of the object 600 by blowing air to the object 600 with the air gun 80. As shown in FIG. 4, the worker 500 first lifts the object 600 from the work surface 110 and pulls out the air gun 80 from the holster 83 and points it toward the surface of the object 600 when starting the air cleaning operation. At this time, the detection unit 85 detects that the air gun 80 has been removed from the holster 83 and indicates that the air gun 80 is in use in the control unit 250 of the worktable drive unit 200 and the electromagnetic valve 89. Output a signal. When receiving this signal, the electromagnetic valve 89 switches to a state where air is supplied to the air gun 80.

  Subsequently, as shown in FIG. 4, the operator 500 operates the pedal switch 70 by stepping on the foot with the foot. At this time, the pedal switch 70 outputs a signal indicating that the operator has stepped on the foot of the worker 500 to the control unit 250 of the work table driving unit 200. When the control unit 250 receives both the signal indicating that the air gun 80 is in use from the detection unit 85 and the signal indicating that the operator has stepped on the foot of the operator 500 from the pedal switch 70, the control unit 250 receives the signal shown in FIG. As shown, the air in the air cylinder 210 in a state where the high-pressure air is being supplied is exhausted. As a result, as shown in FIG. 4, the rod 230 of the air cylinder 210 is contracted, and the plane portion of the work surface 110 in the work table 100 is inclined with respect to the horizontal plane. In this state, the worker 500 performs the air cleaning operation by lifting the object 600 and blowing air onto the object 600 with the air gun 80.

  In addition, the control unit 250 exhausts the air in the air cylinder 210 and simultaneously outputs a signal to the intake device 69 to start intake. As shown in FIGS. 1 to 4, the intake device 69 has one end connected to the other end of the intake hose 65 connected to the chute 61 via the intake port 63, and receives the signal from the control unit 250. Then, the indoor air in the clean unit 10 is sucked. As a result, dust, dust, and the like that have come out of the object 600 by the air cleaning operation are sucked together with the indoor air from the intake port 63 via the chute 61.

  Thus, the clean unit 10 can tilt the plane portion of the work surface 110 of the work table 100 with respect to the horizontal plane. Therefore, when the worker 500 lifts the object 600 on the work surface 110 of the work table 100 and performs the air cleaning operation, it is not necessary to lift the object 600 high, and the burden on the worker 500 is reduced. Can do. In addition, in the state where the plane portion of the work surface 110 is inclined, the indoor space above the work surface 110 becomes wider than in the state where the plane portion of the work surface 110 is horizontal, so the air cleaning work can be performed in a wider space. can do.

  Further, the rubber sheet 105 is attached to the work surface 110 as described above, and has a large frictional resistance in the surface direction of the work surface 110. Therefore, as shown in FIG. 4, even when the plane portion of the work surface 110 is tilted, the object placed on the work surface 110 is difficult to slip on the work surface 110. Furthermore, for example, during the air cleaning operation, it is possible to work by hooking a part of the object 600 on the rubber sheet 105. Further, as described above, the return portion 103 is disposed at one end on the back side of the base plate 101 of the work table 100. Therefore, even when the plane portion of the work surface 110 is tilted, it is possible to prevent the object placed on the work surface 110 from falling out of the work surface 110.

  Further, as described above, the work table driving unit 200 is configured so that the plane portion of the work surface 110 is obtained when the air gun 80 is in use and the pedal switch 70 is stepped on by a worker 500. Tilt to the horizontal plane. Therefore, it is possible to prevent the work surface 110 from being inclined by mistake.

  Further, as described above, the intake device 69 of the intake unit 60 sucks the indoor air in the clean unit 10 when the plane portion of the work surface 110 is inclined with respect to the horizontal plane. As a result, when the worker 500 is blowing air against the object 600 with the work surface 110 tilted, the intake device 69 of the intake section 60 can be operated. Can be operated.

  In the embodiment shown in FIGS. 1 to 4, the partition walls 30 cover the front, rear, left and right. Alternatively, the left and right or rear partition walls 30 may be provided with openings so as to be connected to adjacent units. Good. Thereby, the object 600 can be delivered in a clean state between adjacent units.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

It is a perspective view which shows the external appearance of the clean unit 10 which concerns on embodiment of this invention. It is a perspective view which shows an external appearance when the partition 30 of the clean unit 10 is removed. It is a schematic sectional drawing which shows a mode that the operator 500 works when the plane part of the worktable 100 is a state parallel to a horizontal surface. It is a schematic sectional drawing which shows a mode that the operator 500 works when the plane part of the worktable 100 is in the state inclined with respect to the horizontal surface.

Explanation of symbols

  10 Clean Unit, 20 Frame, 30 Bulkhead, 40 Clean Air Supply Portion, 41 Outside Air Intake Port, 43 Fan, 45 HEPA Filter, 47 Supply Port, 50 Arm Cover, 60 Air Intake Portion, 61 Chute, 63 Air Inlet Port, 65 Air Intake Hose 67 wiring, 69 air intake device, 70 pedal switch, 71 wiring, 80 air gun, 81 air hose, 83 holster, 85 detection section, 87 wiring, 89 solenoid valve, 100 work table, 101 base plate, 103 return section, 105 rubber sheet, 107 Hinge, 110 Work surface, 200 Worktable drive part, 210 Air cylinder, 220 Flange, 230 Rod, 240 Contact part, 250 Control part, 260 Air hose, 500 Worker, 600 Object

Claims (5)

A clean unit in which an operator blows air on an object in a clean environment to remove dust attached to the object,
A partition that forms a chamber isolated from the outside;
A clean air supply section for supplying clean air into the room;
An air gun arranged in the room and blowing the air in an arbitrary direction;
At least a work surface having a plane inclined with respect to a horizontal plane when the air is blown onto the object, and a return portion extending upward from a lower end of the work surface when the air is blown onto the object. A work table disposed in the room;
A clean unit comprising: an air intake section for taking in the indoor air.   The clean unit according to claim 1, further comprising a work table drive unit that switches the plane of the work surface between a state inclined with respect to a horizontal plane and a state parallel to the horizontal plane.   The work table drive unit has a pedal switch arranged in the vicinity of a foot when an operator is working, and when the operation of the pedal switch is detected, the plane of the work surface is inclined to a horizontal plane. The clean unit according to claim 2, wherein the clean unit is placed in a closed state. A detector that detects whether the air gun is in use or unused;
The work table drive unit is configured to detect the work surface when the detection unit detects that the air gun is in use, and when the pedal switch is detected to be stepped on with a foot. In a state where the plane is inclined with respect to the horizontal plane,
When the detection unit detects that the air gun is unused, or when the pedal switch detects that the pedal switch is not stepped on with a foot, The clean unit according to claim 3, wherein the plane is parallel to a horizontal plane.   The clean unit according to any one of claims 2 to 4, wherein the intake section sucks the air when the plane of the work surface is inclined with respect to a horizontal plane.

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