JP2002263894A - Presser and method for pressing washing tub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a presser capable of pressing a washing tub of a washing machine easily by a simple structure. SOLUTION: The presser 1 is provided with a press table 50 which is fixed to a board 10 and on which the washing tub 100 can be placed, a press body 70 provided vertically movably so as to approach and move away while keeping a state being parallel with the table 50, and two hydraulic cylinders 60A and 60B having cylinder parts 62 fixed to the board 10 and connecting tips of piston rods 61 to the press body 70 to raise/lower the body 70. Four guide rails 16 extending upward and downward are installed on the board 10, and rollers 74 rolling engaged with these rails 16 are fitted rotatably to the body 70. Pressing pressure by the cylinder 60B is large than that by the cylinder 60A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press device suitable for pressing a bottomed cylindrical press target into a flat plate and a method for pressing a cleaning tank using the same.

[0002]

2. Description of the Related Art Various types of press devices have been proposed for crushing and compressing a cylindrical body such as a drum can. A press device of the type disclosed in Japanese Patent Application Laid-Open No. H10-249594, in which a drum can is erected by applying pressure from above while standing up, requires a large compressive force because the drum can is buckled and compressed. Therefore, a large output was required for the driving source. In addition, even when compressed, only a flat cylindrical shape was obtained, so that the effect of volume reduction was small.

To cope with this, Japanese Patent Laid-Open Publication No.
As disclosed in JP-A-18090 and JP-A-2000-15492, there has been proposed a press apparatus of a type in which a drum can is placed horizontally and a body portion of the drum can is crushed in a diameter direction by a press plate from above.

[0004]

In the case of this type of press apparatus, the end plate of the drum can hinders compression. Therefore, in the press apparatus disclosed in Japanese Patent Application Laid-Open No. H08-118090, the end plate must be pressed before pressing. The press apparatus disclosed in Japanese Patent Application Laid-Open No. 2000-15492 is provided with a cutting machine for making a vertical cut in an end plate before pressing, and the end plate is cut by these cutting machines. After cutting, they are pressed.

[0005] However, the press apparatus having such a cutting machine has many problems such as a complicated structure, a large number of parts, and an increase in cost. SUMMARY OF THE INVENTION The present invention provides a press apparatus which is simple in structure and has a small number of parts and is suitable for pressing a cylindrical body, and a method for pressing a cleaning tank using the same.

[0006]

According to a first aspect of the present invention, there is provided a press apparatus fixed to a base and capable of mounting an object to be pressed. A press body that can be raised and lowered so as to approach and separate from the press table while maintaining the parallel state, and a cylinder part is fixed to the base, and the tip of a piston rod is connected to the press body to raise and lower the press body And a plurality of hydraulic cylinders. With this configuration, it is possible to individually set the press pressures of the respective hydraulic cylinders and to set the press pressure distribution on the press target as desired.

According to a second aspect of the present invention, in the first aspect, a press pressure of at least one of the plurality of hydraulic cylinders is different from a press pressure of another hydraulic cylinder. I do. With such a configuration, it is possible to easily press a pressing object having a part that is hardly compressed in part.

According to a third aspect of the present invention, in the first or second aspect, the press body swings between the base and the press body when the press body moves up and down. It is provided with a steady rest mechanism for preventing the vibration. With this configuration, the press body does not swing during the press operation, so that the press target can be prevented from sliding.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the steady rest mechanism includes a plurality of guide rails fixed to the base and extending in the vertical direction, and rotatably mounted on the press body. And a plurality of rollers that are attached and roll by engaging with the respective guide rails. With this configuration, the steadying mechanism can be easily configured.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the object to be pressed is a bottomed tubular body having one end opened. The body is mounted on the press table with its axis horizontal. With this configuration,
The tubular body can be easily pressed without cutting the bottom of the tubular body to be pressed before pressing or the like.

The invention described in claim 6 is characterized in that, in the invention described in claim 5, the press table is provided with a concave portion for preventing the cylindrical body from sliding. With this configuration, it is possible to reliably fix the tubular body when pressing the tubular body.

According to a seventh aspect of the present invention, in the invention of the fifth or sixth aspect, the pressing pressure on the bottom side of the tubular body at the time of pressing is set higher than the pressing pressure on the opening end side. It is characterized by having. With this configuration, a large pressing pressure can be applied to the bottom portion of the tubular body, which is a portion that is difficult to compress, so that the bottom portion can also be reliably pressed.

The invention described in claim 8 is characterized in that, in the invention according to any one of claims 5 to 7, the object to be pressed is a washing tub of a washing machine. With this configuration, it is possible to reliably press the bottomed cylindrical washing tank into a flat plate shape.

According to a ninth aspect of the present invention, in the eighth aspect of the present invention, the cleaning tank has a hole at the bottom. With this configuration, the cleaning tank is easily crushed.

According to a tenth aspect of the present invention, there is provided the press apparatus according to any one of the first to ninth aspects,
A washing tub of a washing machine is placed on the press stand with its axis horizontal, and when the press body is lowered from above the washing tub, a large press pressure is applied to the bottom side of the washing tub from the opening side. A method for pressing a cleaning tank by operating the plurality of hydraulic cylinders to press the cleaning tank as described above. With this configuration, the bottomed cylindrical cleaning tank can be easily and reliably pressed into a flat plate shape.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a press device according to the present invention will be described below with reference to FIGS. This embodiment is an aspect of a press device that presses a stainless steel washing tub of a washing machine that has become a waste household electrical appliance and flattens it.

FIG. 1 is a longitudinal sectional view (a sectional view taken along line II of FIG. 2) of the press device 1 as viewed from the front side. FIG. 2 is a plan view of the press device 1 and FIG. It is a right side view which shows a part broken. The press device 1 includes a base 10, a press base 50 fixed to the base 10, two hydraulic cylinders 60A and 60B attached to the base 10, and a press body that is raised and lowered by the hydraulic cylinders 60A and 60B. 70, and hydraulic cylinders 60A,
And a hydraulic supply unit 80 for operating 60B.

The base 10 has a base plate 11, and four pillars 12a to 12 made of H-shaped steel are provided at four corners of the base plate 11.
2d stands upright and is fixed. Above the base plate 11 by a predetermined distance, a press table 50 is placed in a horizontal position and connected and fixed to the four columns 12a to 12d.
The center portion of the base plate 0 is supported by a support plate 13 provided between the base plate 11 and the base plate 11.

The columns 12a and 12b and the columns 12c and 12d above the press table 50 by a predetermined dimension are H
The cross beams 14a and 14b made of a mold steel material are fixed in a horizontal posture, and a connecting plate 15 for connecting them is fixed to the bottom of the cross beams 14a and 14b.

Each column 1 above the press table 50
In 2a to 12d, a guide rail 16 having an L-shaped cross section faces the opposing surface of the support 12a and the support 12b and the opposing surface of the support 12c and the support 12d on the mountain side. It is extended and fixed.

Also, the base 10 covers almost the entire height range from the press table 50 to the connecting plate 15.
A cover plate 17 surrounding the outside of the four columns 12a to 12d is fixed to the columns 12a to 12d. The front side of the cover plate 17 is opened as an input port 18, and a shutter 19 for opening and closing the input port 18 is provided.
Is provided so as to be able to move up and down. The shutter 19 is mounted on the base 1
It is raised and lowered by a lift device 20 fixed to zero. The inside surrounded by the cover plate 17 and the shutter 19 is a press chamber 30.

Two hydraulic cylinders 60A and 60B are mounted on the connecting plate 15 of the base 10. More specifically, two through holes are provided in the connecting plate 15 between the cross beams 14a and 14b at positions equidistant from the center of the base 10, and each of the hydraulic cylinders 60A and 60B has its own piston rod 61. The cylinder portion 62 is inserted into the through hole, and is fixed to the connecting plate 15 with the cylinder portion 62 in a vertical posture.

The hydraulic cylinders 60A, 60A
A press body 70 is fixed to the tips of the B piston rods 61, 61. The press body 70 includes the piston rod 6
A press plate 71 connected to the leading ends of the press plates 71 and 61 and disposed in a horizontal posture; four roller mounting plates 72 erected and fixed on both front and rear side surfaces of the press plate 71; And a support plate 73 for connecting the two. The press plate 71 is a hydraulic cylinder 60A, 60
B moves up and down in the press chamber 30. At this time, the roller mounting plate 72 and the support plate 73
Is inserted between the cover plate 17 and the cross beams 14a and 14b to move up and down.

A pair of rollers 74 that are vertically separated from each other are rotatably mounted on the outer surface of each roller mounting plate 72. The roller 74 has an L-shaped groove on the outer periphery thereof, and the groove engages with the ridge of the guide rail 16 located opposite to the roller mounting plate 72 to roll. As described above, since each roller 74 of the press body 70 rolls while engaging with the guide rail 16, the press body 70 does not tilt in the vertical direction when the press body 70 moves up and down. , The press plate 71 can be reliably held in the horizontal position, and the press body 70
Can be prevented from swinging in the horizontal direction. In this embodiment, the guide rail 16 and the roller 74 constitute a steadying mechanism.

A hydraulic supply unit 80 for supplying hydraulic oil to the hydraulic cylinders 60A and 60B is fixed to the base 10. In the hydraulic supply unit 80, an oil tank 81 containing hydraulic oil is fixed on the cross beam 14b. On this oil tank 81, a hydraulic pump 83 driven by a motor 82 and a flow path of hydraulic oil are switched. The hydraulic switching valve 84 is fixed. Oil tank 81, hydraulic pump 83, hydraulic switching valve 84, hydraulic cylinders 60A, 6
Reference numeral 0B is connected by a hydraulic pipe (not shown) to form a hydraulic circuit. The hydraulic oil in the oil tank 81 is sucked up by the hydraulic pump 83 to be boosted, and the hydraulic switching valve 8
Hydraulic oil supplied to the cylinder portions 62, 62 of the hydraulic cylinders 60A, 60B via the cylinder 4, and discharged from the cylinder portions 62, returns to the oil tank 81.

The hydraulic circuit allows the hydraulic oil of the same pressure to be simultaneously supplied to each of the cylinder portions 62 of the hydraulic cylinders 60A and 60B. The piston rods 61 of the hydraulic cylinders 60A, 60B can be raised or lowered at the same time.

In the press apparatus 1 according to the present embodiment, the hydraulic cylinder 60B has a larger cylinder diameter than the hydraulic cylinder 60A. Is lowered, the press pressure by the hydraulic cylinder 60B can be made higher than the press pressure by the hydraulic cylinder 60A.

Next, the operation of the press device 1 will be described. The washing tub 100 of the washing machine as an object to be pressed is a bottomed circular cylindrical body having an open upper end (one end side). First, the piston rods 6 of both hydraulic cylinders 60A, 60B
1, the press plate 71 is raised to the upper limit position as shown by the solid line in FIG. Then, the shutter 19 is lifted by the lift device 20 to open the input port 18, the cleaning tank 100 is put into the press chamber 30 from the input port 18, and is placed on the press table 50. At this time, the axis of the cleaning tank 100 is horizontal, the bottom 101 of the cleaning tank 100 is positioned on the side where the hydraulic cylinder 60B is installed, and the upper opening 102 of the cleaning tank 100 is positioned on the side where the hydraulic cylinder 60A is installed. Position.

Next, the shutter 19 is moved by the lift device 20.
Is lowered to close the input port 18. Then, the hydraulic oil passage is switched by the hydraulic switching valve 84 so that the two hydraulic cylinders 6 are switched.
The piston rods 61 of 0A and 60B are lowered, and the press body 70 is lowered. As a result, the press plate 71 comes into contact with the body of the cleaning tank 100, and further descends while compressing the cleaning tank 100, thereby crushing the cleaning tank 100.

As described above, when the press body 70 descends, each roller 74 engages with the guide rail 16 and rolls, so that the horizontal attitude of the press plate 71 is maintained, and
The horizontal swing of the press plate 71 is prevented. As a result, the cleaning tank 100 does not slide during the pressing process,
Further, the pressing pressure transmitted via the pressing plate 71 can be reliably applied to the cleaning tank 100.

In the press apparatus 1, as described above, the press pressure of the hydraulic cylinder 60B is higher than the press pressure of the hydraulic cylinder 60A. Since the bottom part 101 of the tank 100 is arranged, the bottom part 101 that is harder to compress than the upper opening 102 side can also be reliably pressed.

As a result, when the press body 70 reaches the lower limit position as shown by the two-dot line in FIG.
00 is finally crushed into a flat plate shape as shown by a solid line in FIG. 1, and the volume can be sufficiently reduced.

Thereafter, the flow path of the hydraulic oil is switched by the hydraulic pressure switching valve 84 to raise the piston rods 61 of both hydraulic cylinders 60A and 60B, and the press body 70 is raised to the upper limit position. Then, the shutter 19 is raised by the lift device 20 to open the input port 18, and the flat cleaning tank 100 is taken out.

Incidentally, as shown in FIG.
In the upper surface of the cleaning tank 100, a concave portion 51 having a concave curved shape is provided at a portion where the body of the cleaning tank 100 is placed, and when the cleaning tank 100 is set on the press table 50, the cleaning tank 10
It is more preferable to set 0. By doing so, the cleaning tank 100 can be reliably prevented from sliding when pressed from above by the press plate 71 during pressing, and the cleaning tank 100 can be fixed and pressed, so that the pressing pressure can be reduced. Can be reliably applied to the cleaning tank 100 and pressed. Note that the concave portion 51 is not limited to the concave curved shape, and may be a rectangular shape.

In the above embodiment, the cleaning tank 10
0 is set in the press device 1 without any treatment on the bottom and pressed. However, if a hole is made in the bottom 101 of the cleaning tank 100 before setting in the press device 1, the cleaning tank 10
The bottom 101 of the "0" is easily crushed, and the bottom 101 can be reliably pressed. The state of the hole formed in the bottom 101 of the cleaning tank 100 may be such that the hole 101a is provided in an elliptical shape along the diameter of the bottom 101 as shown in FIG. 5A, or as shown in FIG. An elliptical hole 101a may be provided only in the center of the bottom 101.

[Other Embodiments] The present invention is not limited to the above-described embodiment. For example, the number of hydraulic cylinders is not limited to two and may be three or more. Further, in order to make the press pressure different, it is also possible to adopt a method of controlling the hydraulic pressure of the hydraulic oil for each hydraulic cylinder. The object to be pressed may be other than the washing tub of the washing machine.

[0037]

As described above, according to the first or second aspect of the present invention, the press pressure by each hydraulic cylinder is individually set, and the distribution of the press pressure on the object to be pressed is desirably adjusted. Since the setting can be made, an excellent effect that the pressing object having a part which is hardly compressed partially can be easily pressed can be obtained.

According to the third or fourth aspect of the present invention, the press body does not swing during the pressing operation, and as a result, the sliding of the press object can be prevented. The press pressure can be transmitted to the press target without waste, and the press target can be reliably pressed.

According to the invention described in claim 5, it is possible to easily press the cylindrical body without cutting the bottom of the cylindrical body to be pressed before pressing. There is.

According to the sixth aspect of the present invention, since the tubular body can be securely fixed when the tubular body is pressed, there is an effect that the tubular body can be reliably pressed.

According to the seventh aspect of the present invention, since a large pressing pressure can be applied to the bottom portion of the tubular body, which is a portion that is not easily compressed, there is an effect that this bottom portion can also be reliably pressed. . According to the invention described in claim 8, the washing tub of the cylindrical washing machine having a bottom can be reliably pressed into a flat shape, and the volume can be reduced. According to the ninth aspect of the present invention, since the bottom of the cleaning tank is easily crushed, the bottom of the cleaning tank can be reliably pressed into a flat plate shape. Claim 10
According to the invention described in (1), the bottomed cylindrical washing tank can be easily and reliably pressed into a flat plate shape.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of an embodiment of a press device according to the present invention, and is a II sectional view of FIG. 2;

FIG. 2 is a plan view of the press device in the embodiment.

FIG. 3 is a right side view showing a part of the pressing device in the embodiment in a cutaway manner.

FIG. 4 is a perspective view of a press table according to a modification of the embodiment.

FIG. 5 is a plan view of a bottom portion of the electric washing machine as an object to be pressed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Press apparatus 10 Base 16 Guide rail (anti-sway mechanism) 50 Press table 51 Depression 60A, 60B Hydraulic cylinder 61 Piston rod 62 Cylinder part 70 Press body 71 Press plate 74 Roller (anti-sway mechanism) 100 Cleaning tank (press object) 101 bottom 101a hole 102 top opening (open end)

Claims (10)

[Claims] 1. A press table fixed to a base, on which a press object can be placed, and a press body provided to be movable up and down so as to approach and separate from the press table while maintaining a parallel state with respect to the press table; And a plurality of hydraulic cylinders having a cylinder section fixed to the base and a tip of a piston rod connected to the press body to raise and lower the press body. 2. The press apparatus according to claim 1, wherein a press pressure of at least one of the plurality of hydraulic cylinders is different from a press pressure of another hydraulic cylinder. 3. The device according to claim 1, further comprising a steadying mechanism between the base and the press body for preventing the press body from swinging when the press body moves up and down. Item 3. The press device according to item 2. And a plurality of guide rails fixed to the base and extending in a vertical direction, and a plurality of guide rails rotatably mounted on the press body and engaging with the respective guide rails to roll. The press device according to claim 3, further comprising a roller. 5. The press object is a bottomed tubular body having one end opened, and the tubular body is placed on the press table with its axis horizontal. Item 1
The press device according to any one of claims 1 to 4. 6. The press apparatus according to claim 5, wherein the press table is provided with a concave portion for preventing the cylindrical body from sliding. 7. The press apparatus according to claim 5, wherein a press pressure at a bottom side of the tubular body at the time of pressing is set higher than a press pressure at an open end side. 8. The press apparatus according to claim 5, wherein the object to be pressed is a washing tub of a washing machine. 9. The press apparatus according to claim 8, wherein the cleaning tank has a hole at the bottom. 10. A washing tub of a washing machine is placed on the press table with the axis thereof being horizontal, using the press device according to any one of claims 1 to 9, and A method of pressing a cleaning tank, comprising: operating the plurality of hydraulic cylinders to press the cleaning tank so that a large press pressure is applied to a bottom side of the cleaning tank when the press body is lowered. .