JP2002264043A - Workbench and liquid extracting method for air- conditioner outdoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a workbench facilitating work of extracting fleon and compressor oil from an air-conditioner outdoor unit. SOLUTION: This workbench 1 is provided with a rotary table 20 rotatable on an upper plate part 13 of a base 10, and a reversing table 30 installed tiltably rotatable by 90 deg. at one end of the base 10. The reversing table 30 comprises a first holding part 31, a second holding part 32 fixed to the end part of the first holding part 31, and a third holding part 33 slidably mounted to the second holding part 32 and fixable by a clamping device 35. The reversing table 30 is connected to a rotating shaft 43 rotatably supported to the base 10. An operating arm 44 connected to the rotating shaft 43 is connected to a piston rod 52 of an air cylinder 50 mounted to the base 10. The rotating shaft 43 is rotated by the expansion/contraction of the piston rod 52, and the reversing table 30 is inclined and rotated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a worktable suitable for performing a work while tilting a work object, and a method for extracting liquid from an air conditioner outdoor unit using the worktable.

[0002]

2. Description of the Related Art When performing various operations, it may be more efficient to reverse the direction of the work object in the middle of the operation and perform the work thereafter. For example, when disassembling an air conditioner outdoor unit (work target) that has become a waste home appliance,
It is necessary to recover refrigerant such as chlorofluorocarbons and compressor oil. In order to recover this refrigerant etc., remove the screws fixing the back cabinet of the outdoor unit of the air conditioner, remove the back cabinet, expose the built-in compressor, and extract the refrigerant etc. At this time, if the top and bottom directions of the outdoor unit of the air conditioner are the same as when the air conditioner is used, it is difficult to extract the refrigerant and the like, and the working efficiency becomes very poor. Therefore, when the work of extracting the refrigerant or the like is performed, it is necessary to reverse the vertical direction of the outdoor unit of the air conditioner from that when the air conditioner is used.

[0003] However, the air conditioner outdoor unit with the cabinet removed has a state in which other components are attached to the bottom plate. As described above, when the refrigerant or the like is extracted from the outdoor unit of the air conditioner, it is preferable to reverse the vertical direction of the outdoor unit of the air conditioner from the viewpoint of work efficiency. However, in this state, the vertical direction cannot be reversed.

[0004]

However, there has been no worktable of such a structure that is optimal and simple in structure for reversing or tilting the top and bottom of the work object. In addition, in the case of a work object that becomes unstable when the work object is turned upside down, a support device that stably supports the work object that has been turned upside down is required separately. Therefore, the present invention provides a worktable capable of tilting a work object with a simple structure,
An object of the present invention is to provide a method for extracting liquid from an air conditioner outdoor unit using the same.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for holding a work object in a first holding portion and a second holding portion connected in an L-shape. A work table, wherein the holding section is tiltably mounted on the base and tilted by an actuator mounted on the base. In the work bench configured as described above, after the work target is placed on the holder, the actuator is operated to tilt the holder. This makes it possible to tilt the work object.

According to a second aspect of the present invention, in the first aspect of the invention, the tilt angle of the holding portion is about 90 degrees, and the first holding portion is changed from a horizontal position to a vertical position. It is characterized by the following. With this configuration, the tilt angle of the work target can be specified to 90 degrees.

According to a third aspect of the present invention, in the second aspect of the present invention, a rotary shaft having a center of rotation horizontally disposed is installed on the base so as to be rotatable. The vicinity of the intersection of the first holding part and the second holding part in the holding part is connected and fixed, and the operating arm is connected and fixed, and the working part of the actuator is connected to the tip of this operating arm. It is characterized by the following. With this configuration, it is possible to easily configure a mechanism for tilting the holding unit.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the actuator is an air cylinder or a hydraulic cylinder, and the operating portion is a piston rod of the cylinder. With this configuration, a large force can be generated by the actuator, and a heavy object can be tilted.

According to a fifth aspect of the present invention, in any one of the second to fourth aspects of the present invention, the first holding portion is in a horizontal posture on the base, and the second holding portion is It is characterized in that the base is in a horizontal posture on the side.
With this configuration, it is possible to handle the work object on the base before tilting, and to handle the work object on the side of the base after tilting.
Depending on the contents of the work after the tilting, the work efficiency is improved by doing this.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the work object is provided in the second holding portion in cooperation with the first holding portion. And a third holding portion for holding the holding member is mounted so as to be movable at a fixed position. With this configuration, the work object can be stably held during the tilting operation and after the tilting is completed.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the first holding portion has a horizontal posture on the base, and the first holding portion has a horizontal posture. A rotary table capable of horizontal rotation at a position adjacent to the section is provided on the base. With this configuration, after the work object is placed on the turntable and the predetermined work is performed, the work object is transferred from the turntable to the holding unit, and the work is performed by tilting the holding unit. The object can be tilted.

[0012] The invention described in claim 8 is the invention according to any one of claims 1 to 7, wherein the work object is an air conditioner outdoor unit. With this configuration, the outdoor unit of the air conditioner can be easily tilted.

A ninth aspect of the present invention is characterized in that, in the eighth aspect of the present invention, a top plate side of the air conditioner outdoor unit is held by a second holding portion. With this configuration, when the second holding portion in the vertical position is tilted to the horizontal position by tilting, the outdoor unit of the air conditioner can be set in the inverted position with the top plate side down.

According to a tenth aspect of the present invention, there is provided an air conditioner outdoor unit using the work table according to any one of the first to ninth aspects, wherein the first holding part of the holding part is in a horizontal posture. Setting the air conditioner outdoor unit on the first holding part by abutting the top plate part on the second holding part, and then operating the actuator to tilt the holding part by about 90 degrees. The air conditioner outdoor unit is inverted, and the operation of extracting at least one of the refrigerant and oil stored in the air conditioner outdoor unit is performed while maintaining the inverted posture. . With this configuration, liquid such as a refrigerant can be easily extracted from the outdoor unit of the air conditioner.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a work table according to the present invention will be described below with reference to FIGS. This embodiment is an embodiment of a work table used when disassembling an air conditioner outdoor unit that has become a waste home appliance and extracting a refrigerant such as chlorofluorocarbon, compressor oil, and the like.

FIG. 1 is a front view of the work table 1, and FIG. 2 is a plan view of the work table 1. For convenience of explanation, the horizontal direction of the paper in FIG. The direction will be described. The work table 1 includes a base 10, a rotary table 20 and a reversing table (holding unit) 30 installed on the base 10, and a tilting mechanism 4 for tilting the reversing table 30.
0 is the main configuration.

The base 10 has four legs 12 provided with casters 11 at the lower ends, and a flat upper plate 13 horizontally supported by the legs 12, and has a height of about 80 cm. Is set to On the upper left half of the upper plate 13 of the base 10,
A disk-shaped rotary table 20 is installed via a shaft 21 so as to be horizontally rotatable. The turntable 20 has a size that allows the entire bottom 101 of the air conditioner outdoor unit 100 to be mounted thereon when the air conditioner outdoor unit 100 is mounted thereon in a normal use state.

At the right end of the upper plate 13 of the base 10, a reversing table 3 capable of holding the outdoor unit 100 is provided.
0 is set. The reversing table 30 includes a first holding unit 31 having a flat rectangular mounting surface 31a, a pair of second holding units 32, 32 installed at front and rear ends of a right end of the first holding unit 31, Each of the second holders 32 has a third holder 33 slidably supported by the second holder 32.

When the mounting surface 31a is in a horizontal position, the first holding portion 31 arranges most of the first holding portion 31 on the upper plate portion 13 of the base 10, and the first holding portion 31 Is placed on a stopper 14 fixed on the upper plate portion 11, and the right end of the first holding portion 31 protrudes rightward from the right edge of the base 10. When the mounting surface 31a is in a horizontal posture, the left end of the first holding portion 31 is located very close to the rotary table 20, and the height of the mounting surface 31a is
The height is set to be substantially the same as the upper surface of the zero. The mounting surface 31a of the first holding part 31 has a dimension in the front-rear direction smaller than the width dimension of the outdoor unit 100, but a dimension in the left-right direction is set to be larger than the height dimension of the outdoor unit 100. Have been.

The second holding portion 32 has a rod shape having a rectangular cross section.
The first holding portion 31 is fixed at a right angle to the mounting surface 31a. The second holding unit 32 is provided with the air conditioner outdoor unit 10.
It has a length sufficiently longer than the depth dimension of zero. The third holding portion 33 is disposed so as to face the mounting surface 31 a of the first holding portion 31, and one end of the third holding portion 33 is fitted to the second holding portion 32 so that the second holding portion 32 Is mounted so as to be slidable along the axial direction of. The third holding portion 33 can be made immovable with respect to the second holding portion 32 by tightening the clamp device 35. The length of the third holding portion 33 is shorter than the length of the first holding portion 31 in the horizontal direction in the horizontal posture.

Next, the tilting mechanism 40 will be described. A pair of bearings 42, 42 are installed on the right side of the base 10 via brackets 41, 41.
A rotating shaft 43 that extends the axis in the front-rear direction is rotatably supported by the shafts 2 and 42. The lower right end of the first holding portion 31 of the reversing table 30 is fixed to the rotating shaft 43 by a pair of connecting arms 36, 36. Therefore, the reversing table 30 is tilted by the rotation of the rotating shaft 43.

The connecting arm 3 is connected to the rotating shaft 43.
An operation arm 44 extending in the direction opposite to the direction in which the extension arm 6 extends is fixed. The operation arm 44 is provided with the first holding unit 3.
When the first mounting surface 31a is made horizontal, it is arranged so that its tip extends obliquely downward and to the right. When the operating arm 44 is rotated clockwise as viewed from the front, the rotating shaft 43 is rotated in the same direction, and the reversing table 30 is also rotated in the same direction.

An air cylinder 50 is provided on the back side of the upper plate portion 13 of the base 10 near the right center thereof.
More specifically, the cylinder support device 5 is provided on the back side of the upper plate 13.
The cylinder portion 51 of the air cylinder 50 is rotatably supported by the cylinder supporting device 55. The cylinder portion 51 is arranged such that a piston rod (action portion) 52 protruding from the cylinder portion 51 extends in the left-right direction. And the piston rod 5
The tip of the operation arm 44 is rotatably connected to the tip of the second arm. Therefore, by operating the air cylinder 50 to extend and retract the piston rod 52, the rotating shaft 43 can be rotated.
0 can be rotated. When the piston rod 52 is extended the longest, the mounting surface 31a of the first holding unit 31 is horizontal and the second holding unit 32 is vertically When the piston rod 52 is shortened to the shortest,
The expansion and contraction range of the piston rod 52 is set so that the mounting surface 31a is vertical and the second holding portion 32 is horizontal as shown by a two-dot chain line in FIG.

Next, an operation procedure for disassembling the air conditioner outdoor unit 100 and extracting the refrigerant, such as Freon and the oil of the compressor, using the work table 1 will be described. First, as a work preparation, the piston rod 52 of the air cylinder 50 is extended, the mounting surface 31a of the first holding portion 31 of the reversing table 30 is set in a horizontal posture, and the third holding portion 33 is held in the second holding position. It is stopped near the tip of the part 32.

Thereafter, the air conditioner outdoor unit 100 is placed on the rotary table 20 in the same vertical direction as when the air conditioner is used. That is, the bottom 101 of the air conditioner outdoor unit 100
Is placed on the upper surface of the turntable 20. Then, with respect to the air conditioner outdoor unit 100 mounted on the rotary table 20, a screw holding the back cabinet is removed to remove the back cabinet, thereby exposing the built-in compressor. When performing this work, the direction of the air conditioner outdoor unit 100 can be changed by rotating the turntable 20 in a direction in which the worker can easily work.

After the back cabinet is removed, the rotary table 20 is rotated so that the front 102 of the outdoor unit 100 faces the reversing table 30. Next, the air conditioner outdoor unit 100 is gently rolled on the turntable 20 toward the reversing table 30, and the front surface 102 is placed on the upper surface of the turntable 20.

Next, in this state, the air conditioner outdoor unit 100 is pushed and moved in a direction approaching the reversing table 30, and is mounted on the mounting surface 31a of the first holding portion 31 of the reversing table 30. The top plate portion 104 of the outdoor unit 100 is abutted against the second holding portion 32. Next, the clamp device 35 is loosened, and the third holding portion 33 is brought into contact with the back portion 103 of the outdoor unit 100 of the air conditioner.
To fix the third holding portion 33. Thereby, the air conditioner outdoor unit 100 does not fluctuate even during the subsequent tilting operation of the reversing table 30,
There is no departure.

Next, the reversing table 30 is rotated 90 degrees to the right by contracting the piston rod 52 of the air cylinder 50. Thereby, as shown by the two-dot line in FIG.
2 is in the horizontal position, the air conditioner outdoor unit 100 is in the inverted position with the top plate 104 facing down, and the base 10
From the right side.

Even in this inverted posture, the air conditioner outdoor unit 100 is firmly held between the first holding portion 31 and the third holding portion 33 of the reversing table 30, so that it stands very stably. Thereafter, in this stable state, the operation of extracting the refrigerant of the refrigerant of the air conditioner outdoor unit 100 and the oil of the compressor is performed. Air conditioner outdoor unit 100
Is firmly supported, so that the extraction operation can be performed extremely safely.

When the operation of removing the chlorofluorocarbon and oil is completed, the piston rod 52 of the air cylinder 50 is extended again, and the air conditioner outdoor unit 100 is turned over by rotating the reversing table 30 to the left by 90 degrees. Then, after the clamp device 35 is loosened to move the third holding portion 33 upward, the clamp device 35 is tightened and fixed,
The air conditioner outdoor unit 100 is transferred from the reversing table 30 onto the rotary table 20.

As described above, by using the work table 1, the outdoor unit 100 can be easily inverted upside down, and the operation of removing Freon and oil from the outdoor unit 100 can be performed simply and efficiently. be able to.

[Other Embodiments] The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the actuator is configured by the air cylinder, but a hydraulic cylinder may be used instead. The work target is not limited to the outdoor unit of the air conditioner, and the tilt angle of the holding unit is not limited to 90 degrees.

[0033]

As described above, according to the first aspect of the invention, there is an effect that the posture of the work object can be easily changed by tilting. According to the invention described in claim 2, the tilt angle of the work target can be specified to 90 degrees. According to the invention described in claim 3,
A mechanism for tilting the holding portion can be simply configured.

According to the fourth aspect of the invention, a large force can be generated by the actuator, and a heavy work object can be tilted. According to the invention described in claim 5, it becomes possible to handle the work object on the base before tilting, and to handle the work object on the side of the base after tilting. . According to the invention described in claim 6, it is possible to stably hold the work object during the tilting operation and after the completion of the tilting, and the workability and safety after the completion of the tilting. Can be improved.

According to the seventh aspect of the present invention, after the work object is placed on the turntable and the predetermined work is performed, the work object is transferred from the turntable to the holding section, and Can be tilted to tilt the work object, and a series of operations on the work object can be efficiently performed. According to the invention described in claim 8, the outdoor unit of the air conditioner can be easily tilted.

According to the ninth aspect of the present invention, since the outdoor unit of the air conditioner can be set in the inverted position with the top plate side down, the work of extracting the refrigerant and oil from the outdoor unit of the air conditioner can be facilitated. Become like According to the invention described in claim 10, liquid such as refrigerant can be easily extracted from the outdoor unit of the air conditioner.

[Brief description of the drawings]

FIG. 1 is a front view of a working table according to an embodiment of the present invention.

FIG. 2 is a plan view of a work table in the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 work table 10 base 20 rotating table 30 reversing table (holding section) 31 first holding section 32 second holding section 33 third holding section 40 tilting mechanism 43 rotation shaft 44 operating arm 50 air cylinder (actuator) 52 piston rod (Working part) 100 Air conditioner outdoor unit (work target) 104 Top panel

Claims (10)

[Claims] A first holding portion connected to an L-shape and a holding portion capable of holding a work object by a second holding portion, wherein the holding portion is tiltably attached to a base, and A work table, which is tilted by an actuator attached to the table. 2. The work table according to claim 1, wherein the tilt angle of the holding unit is about 90 degrees, and the posture of the first holding unit is changed from a horizontal posture to a vertical posture. 3. A rotating shaft having a center of rotation horizontally disposed thereon is rotatably installed on the base, and the rotating shaft has an intersection between a first holding portion and a second holding portion of the holding portion. 3. The worktable according to claim 2, wherein the vicinity is connected and fixed, and the operation arm is connected and fixed, and a working portion of the actuator is connected to a tip of the operation arm. 4. The workbench according to claim 3, wherein the actuator is an air cylinder or a hydraulic cylinder, and the operating portion is a piston rod of the cylinder. 5. The device according to claim 2, wherein the first holding portion has a horizontal posture on the base, and the second holding portion has a horizontal posture on a side of the base. The workbench according to any of the above. 6. A second holding part, wherein a third holding part for holding the work object in cooperation with the first holding part is attached so as to be movable at a fixed position. The workbench according to any one of claims 2 to 5, wherein 7. The method according to claim 7, wherein the first holding unit is in a horizontal posture on the base, and a rotation table that is horizontally rotatable at a position adjacent to the first holding unit in the horizontal posture is provided on the base. The support according to any one of claims 2 to 6, characterized in that: 8. The worktable according to claim 1, wherein the work target is an outdoor unit of an air conditioner. 9. The workbench according to claim 8, wherein a top plate side of the outdoor unit of the air conditioner is held by the second holding unit. 10. A top plate of an outdoor unit of an air conditioner using the workbench according to any one of claims 1 to 9 in a state where the first holding unit of the holding unit is in a horizontal posture. (2) The air conditioner outdoor unit is set on the first holding portion by abutting against the holding portion, and then the actuator is operated to tilt the holding portion by about 90 degrees, thereby inverting the air conditioner outdoor unit. A method of extracting at least one of the refrigerant and oil stored in the outdoor unit while maintaining the inverted posture.