JP2933103B2 - Vertical air cylinder for vertical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical equipment vertical air cylinder used for raising and lowering a processing head and a table in a vertical equipment.

[0002]

2. Description of the Related Art Generally, a vertical installation is, as shown in FIG.
An elevating body 3 is set up and down on the front surface of a column 2 erected on the machine base 1, and the elevating body 3 is moved up and down by an elevating air cylinder 4 attached to an appropriate place above the column 2 to move up and down. It is configured to move up and down a processing head, a table, and the like (not shown) mounted on the body 3.

[0003] Conventionally, in the above vertical equipment, the elevating body 3
The balance weight 5 is suspended and supported via a suspension mechanism 6. The balance weight 5 is balanced in weight from the elevating body 3 on which the processing head and the table are mounted, so that the elevating body 3 can smoothly move up and down when the processing head and the table are raised and lowered. Like that.

[0004]

By the way, as described above, in the conventional vertical equipment, the machining head, the table and the like are supported by suspending and supporting the balance weight 5 on the elevating body 3 via the suspension mechanism 6. When moving up and down, the lifting body 3 can perform a smooth lifting movement,
A large column 2 capable of suspending the balance weight 5 is required, and can be applied to large-scale equipment but cannot be applied to small-sized equipment. In addition, if the balance weight 5 and a suspending mechanism 6 for suspending the weight are provided, the cost becomes large. There was a problem of rising. Further, it is necessary to adjust the balance between the lifting / lowering body 3 on which the processing head, the table and the like are mounted and the balance weight 5 by increasing and decreasing the weight of the balance weight 5, so that fine adjustment is impossible. there were.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and in order to solve the above problem, a descending supply / discharge port is connected to a first switching valve via an air pipe, and the first switching valve is provided. The valve is connected to an air source through an air pipe provided with a ball valve, an air filter, a first pressure reducing valve, a residual pressure release valve, and the like, and an air pipe provided with a regulator valve is connected to a rising-side supply / discharge port. And an upstream side of the regulator valve is connected to the first switching valve via an air pipe provided with a second pressure reducing valve and a shuttle valve. An elevator air cylinder for vertical equipment, wherein a second switching valve connected to the regulator valve and connected to the shuttle valve and upstream of the second pressure reducing valve is connected.

[0006]

The vertical air cylinder for vertical equipment of the present invention acts as a normal air cylinder when ascending, and acts as an air cylinder having a balance function by applying a balance pressure to the regulator valve by the shuttle valve when descending.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a schematic overall view of a vertical equipment provided with a vertical air cylinder for vertical equipment according to the present invention. In the figure, reference numeral 7 denotes a machine base, 8 denotes a column erected at a predetermined position on the machine base 7, 9 denotes a processing head, a table and the like (not shown) mounted on a front surface of the column 8 so as to be vertically movable. The elevating body 10 is an elevating air cylinder which is fixed to the inside of the column 8 so as to stand upright, and the elevating body 9 is attached and fixed to the tip of a piston rod 11 via a mounting jig 12 in a suspended manner. In addition, the lifting / lowering body 9 is moved up and down by the protrusion / retreat of the piston rod 11, and the processing head, table, and the like mounted on the lifting / lowering body 9 are moved up and down by the up / down movement of the lifting / lowering body 9.

FIG. 2 is a circuit diagram showing a circuit configuration of the elevating air cylinder 10. The elevating air cylinder 10 has a first supply / discharge port A on the descending side on which a first flow control valve 13 is provided. (1) A first for making the piston rod 11 of the lift air cylinder 10 protrude or retreat through the air pipe 14
The first switching valve 15 is connected to a ball valve 16, an air filter 17, a first pressure reducing valve 18, and a residual pressure release valve 19.
Is connected to an air source 21 such as an air compressor via a second air pipe 20 provided with the above. Also, the lifting air cylinder
Reference numeral 10 denotes an ascending second supply / discharge port B through a third air pipe 24 provided with a second flow rate regulating valve 22 and a regulator valve 23, and an air filter 17 of a second air pipe 20 and a first pressure reducing valve. 18
A second pressure reducing valve 25 and a shuttle valve 26 for setting a balance pressure are provided between the regulator valve 23 of the third air pipe 24 and the connection to the second air pipe 20. The fourth switching valve disposed and connected to the first switching valve 15
The air pipe 27 is branched and connected. Regulator valve 23
Is connected to a second switching valve 28, and the second switching valve 28 is connected to the fifth
It is connected to the shuttle valve 26 via an air pipe 29 and the second air pipe
It is connected between the pressure reducing valve 25 and the connection to the third air pipe 24.

A description will be given of a case in which the working head, the table, and the like mounted on the elevating body 9 of the vertical equipment are moved up and down by the elevating air cylinder 10 of the present invention in the above configuration.

The air from the air source 21 is sent to the first switching valve 15 through the second air pipe 20 and the air from the middle of the air filter 17 and the first pressure reducing valve 18 of the second air pipe 20 to the third. There is what is sent to the regulator valve 23 of the air pipe 24, since the pressure P ₁ of the air sent to the first switching valve 15 which is reduced by the first reducing valve 18, the pressure P ₀ of the air sent to the regulator valve 23 Less than.

First, when ascending the working head, table or the like mounted on the elevating body 9, turning on the ascending solenoid 31 of the first switching valve 15, the air and the regulator valve sent to the first switching valve 15 are turned on. Air on the way to 23 is third
The air sent to the shuttle valve 26 of the air pipe 24, but the air sent from the middle of the air being sent to the regulator valve 23 is smaller than the pressure P _{1 of the} air sent from the first switching valve 15 by the second pressure reducing valve 25. because it is reduced to P _2, FIG. 3
As shown in (1), air sent from the first switching valve 15 is sent to the regulator valve 23 through the shuttle valve 26, the fifth air pipe 29, and the second switching valve 28, and the pressure of the air is applied to the regulator valve 23. P ₁ works. Accordingly, the air sent to the regulator valve 23, is adjusted to the pressure P ₁ by the regulator valve 23 is sent to the second supply and discharge port B of the elevating air cylinder 10 protrudes a piston rod 11 of the elevating air cylinder 10 Then, the elevating body 9 is raised, and the processing head, table, and the like mounted on the elevating body 9 are raised.

When the processing head, table, and the like mounted on the elevating body 9 are raised, the second switching valve
When the solenoid 32 of 28 is turned on, the air from the shuttle valve 26 is shut off by the second switching valve 28, and on the other hand, the second air is sent to the shuttle valve 26 through the second pressure reducing valve 25.
The air before decompression is reduced by the pressure reducing valve 25 to the sixth air pipe 30,
Through the switching valve 28 is sent to the regulator valve 23, the pressure P ₀ of the air acts on the regulator valve 23. Thus, air sent to the regulator valve 23 is fed is adjusted to a pressure P ₀ from the previous by a regulator valve 23 to the second supply and discharge port B of the elevating air cylinder 10,
The elevating body 9 is raised by projecting the piston rod 11 of the elevating air cylinder 10, and the working head, table, and the like mounted on the elevating body 9 are raised. In this case, since high pressure air is sent to the second supply / discharge port B of the lifting / lowering air cylinder 10, the output of the lifting / lowering air cylinder 10 is increased, and the lifting / lowering body 9 and the processing head, table, Can rise at high speed.

Next, when lowering the working head, table or the like mounted on the elevating body 9, when the descending solenoid 33 of the first switching valve 15 is turned on, the air sent to the first switching valve 15 is discharged to the first switching valve 15. The air is sent to the first air supply / discharge port A of the lifting / lowering air cylinder 10 through one air pipe 14, thereby
The piston rod 11 of 10 retreats, and the elevating body 9 and the processing head, table and the like attached to it start to descend. Meanwhile, since the first switching valve side port 26a of the shuttle valve 26 is open to the atmosphere, the second air reduced in pressure to a pressure P ₂ by the pressure reducing valve 25 is a shuttle valve 26 as shown in FIG. 4, the fifth air pipe The pressure of air sent to the regulator valve 23 through the second switching valve 28 and the second switching valve 28
Since P ₂ acts, air air pressure from the second supply and discharge port B of the lifting cylinder 10 is compressed by the weight of such machining head and tables to be mounted vertically movable body 9 and it is working regulator valve 23 It rises above the pressure P ₂ of the pressure of the air sent excess air escape by the second supply and discharge port B of the elevating air cylinder 10 from the regulator valve 23 constant. With this, the lifting air cylinder
Since the ten piston rods 11 smoothly retreat at a predetermined speed, the elevating body 9 and the processing heads, tables, and the like mounted on the elevating body 9 descend in a state of weight balance.

[0015]

As described above, the lifting and lowering air cylinder of the present invention becomes a normal air cylinder when ascending and becomes an air cylinder with a weight balance function when descending. When used for raising and lowering, the vertical equipment does not need a balance weight, so that the entire vertical equipment can be made compact and applicable to small vertical equipment, and at the same time, the number of components is reduced. Therefore, the cost can be reduced, and the balance between the processing head and the table can be adjusted only by adjusting the pressure of the pressure reducing valve, so that the adjustment is very simple and fine adjustment is possible. In addition, since the vertical air cylinder for vertical equipment of the present invention can change the output when ascending,
It is very convenient because the processing head, table, etc. can be raised at low speed and high speed.

[Brief description of the drawings]

FIG. 1 is a schematic overall view of a vertical facility provided with a vertical equipment lifting air cylinder according to the present invention.

FIG. 2 is a circuit diagram showing a circuit configuration of a vertical air cylinder for vertical equipment according to the present invention.

FIG. 3 is a view showing a state of a shuttle valve and a flow of air when ascending.

FIG. 4 is a diagram showing a state of a shuttle valve and a flow of air when the shuttle valve descends.

FIG. 5 is a schematic overall view showing a conventional vertical facility.

[Explanation of symbols]

 9 Lifting body 10 Lifting air cylinder 15 First switching valve 18 First pressure reducing valve 21 Air source 23 Regulator valve 25 Second pressure reducing valve 26 Shuttle valve 28 Second switching valve

Claims (1)

(57) [Claims] 1. A descending supply / discharge port is connected to a first switching valve via an air pipe, and the first switching valve is connected to a ball valve, an air filter, a first pressure reducing valve, a residual pressure release valve, and the like. An air source is connected through an air pipe provided, and an ascending-side supply / discharge port is connected to an upstream side of the first pressure reducing valve through an air pipe provided with a regulator valve; Is connected to the first switching valve via an air pipe provided with a second pressure reducing valve and a shuttle valve, and is further connected to the regulator valve and to the shuttle valve and upstream of the second pressure reducing valve. A vertical air cylinder for vertical equipment, wherein a second switching valve connected to the side is connected.