JPH0429896Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cleaning device for removing chips and the like from a machined workpiece.

(Prior art) Conventionally, as a device for washing off chips and the like from machined workpieces, as shown in FIG. There is a known device that injects water onto a workpiece.

As shown in FIG. 4, this conventional device mixes cleaning liquid and air and injects the mixture onto a workpiece.
Solenoid valve 103 interposed in the middle of
Air is supplied from the compressed air source 105 to the mixer 104 through a connecting pipe 106 and solenoid valves 107 interposed in the middle of the connecting pipe 106. The cleaning liquid and air are mixed in the mixer 104, and the mixed liquid is passed through the communication pipe 108 connected to the outlet of the mixer 104.
The nozzle 109 provided at the tip of the nozzle 08 sprays the liquid onto the workpiece.

In this device, the cleaning liquid is supplied and stopped according to the opening and closing of the solenoid valves 103, 107, . . . .

(Problems to be solved by the invention) However, in the conventional cleaning device described above, a solenoid valve is required for each piping system, and especially in a device equipped with multiple cleaning chambers for mass processing, There are a large number of solenoid valves, and the electrical control circuits and panels required for these valves are also large-scale, making maintenance and management of the equipment itself difficult.
There were problems such as that the entire device was expensive.

(Means for Solving the Problems) In order to solve the above problems, the present invention includes a cleaning liquid cutoff valve and an air cutoff valve in the middle of the piping, and a flow path switching valve that supplies operating air to these valve cylinder units. was provided so that the cam was brought into contact with the flow path switching valve.

(Function) The flow path switching valve is switched by the uneven portion of the cam to open and close the cleaning cutoff valve and the air cutoff valve.

(Example) An example of the present invention will be described below based on the drawings.

FIG. 1 is a diagram showing the operating state of the cleaning device according to the present invention, and FIG. 2 is a diagram showing the stopped state of the same device.

This apparatus is mainly composed of a cleaning liquid supply system, an air supply system, a system for supplying cylinder operating air to a shutoff valve that stops the supply of cleaning liquid and air, and a cleaning tank, and will be explained in detail below.

The cleaning liquid is pumped up from the liquid tank 1 by a pump P and reaches the mixer 4 via a connecting pipe 2 and a cleaning liquid cutoff valve 3 interposed in the middle of the connecting pipe 2.

Air also reaches the mixer 4 from the compressed air source 5 via a connecting pipe 6a, an accumulator 6b, a pressure reducing valve 6c, and an air cutoff valve 7, which are interposed in the middle of the connecting pipe 6a. After the cleaning liquid and air that have reached mixer 4 are thoroughly mixed in this mixer,
The water is supplied to nozzles 10 disposed in the cleaning tank 9 through a connecting pipe 8 connecting the outlet of the mixer 4 and the cleaning tank 9, and is sprayed onto the workpiece 11 from the nozzles 10.

On the other hand, the cylinder operating air is supplied from the compressed air source 12 to the connecting pipes 13a to 13f and the connecting pipes 13a to 13f.
A cleaning liquid flow path switching valve 14 provided in the middle of the
The air is supplied to the cylinder 3a of the cleaning liquid cutoff valve 3 and the cylinder 7a of the air cutoff valve 7 via the air flow path switching valve 15, respectively. In addition, the connecting pipe 13
Regarding a to 13f, the communication pipes 13a... are connected to the supply ports of the switching valves 14, 15, and the communication pipes 13a...
d is connected to the exhaust ports of the switching valves 14 and 15. Further, the communication pipe 13b connects the A port of the switching valve 14 and the cylinder 3a of the cleaning liquid cutoff valve 3.
In FIG. 1, the cleaning liquid cutoff valve 3 is kept open by the action of air supplied through the communication pipe 13b. The communication pipe 13c connects the B port of the cleaning liquid flow path switching valve 14 and the cylinder 3a. Similarly, the communication pipes 13e and 13f connect the A port and B port of the air flow path switching valve 15 and the cylinder 7a of the air cutoff valve 7, respectively, and in FIG. The air cutoff valve 7 is maintained in an open state by the action of .

On the other hand, the spool protrusion 14a protruding from the cleaning liquid flow path switching valve 14 and the air flow path switching valve 15
The spool protrusions 15a protruding from the cam 1 respectively
6 and 17 and move back and forth to switch the flow path. These cams 16, 17 are A in FIG.
As shown in FIG. 3, which is a view taken in the -A direction, it is fitted onto a single shaft and slowly rotated counterclockwise by a rotating means 19 such as a motor.

The state in which the workpiece 11 is being cleaned with cleaning liquid and air has been described above based on FIG. The state in which these spool protrusions 14a, 15a protrude forward will be explained with reference to FIG.

By switching the cleaning liquid flow path switching valve 14, the cylinder operating air is transferred from the compressed air source 12 to the communication pipe 13.
a and the communication pipe 13c to reach the cylinder 3a of the cleaning liquid cutoff valve 3, and close the cleaning liquid cutoff valve 3. Similarly, by switching the air flow path switching valve 15, the cylinder operating air passes through the communication pipe 13f and closes the air cutoff valve 7.

However, in FIG. 2, the supply of cleaning liquid and air is stopped, and the cleaning operation is stopped.

As described above, by rotating the cams 16 and 17, the cleaning work can be performed intermittently, and the intermittency time ratio can be freely selected depending on the length distribution of the unevenness of the cams.

In addition, 20 is a limit switch and cams 16 and 17
This is to detect the origin of. Further, 21 and 22 are lamps, a cleaning liquid cutoff valve 3 and an air cutoff valve 7.
The lights are set to light up when the lights are open.

Further, the cams 16 and 17 are not limited to plate cams, but may be cylindrical or annular cams.

(Effects of the invention) As explained above, according to the invention, the shutoff valve can be opened and closed simply by rotating a single shaft on which a number of cams are connected. In the case of a device equipped with the above, the device becomes simple, and the equipment cost and maintenance management cost can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the operating state of the cleaning device according to the present invention, FIG. 2 is a diagram showing the device in a stopped state, FIG. The figure is an explanatory diagram of a conventional example. In the drawing, 3 is a cleaning liquid cutoff valve, 7 is an air cutoff valve, 9 is a cleaning tank, 10 is a nozzle, 11 is a workpiece, 14 is a cleaning liquid flow path switching valve, 15 is an air flow path switching valve, 17, 18 is a cam.

Claims (1)

[Scope of utility model registration request] In a device that cleans a workpiece by intermittently supplying cleaning liquid or air, there is a cam with an uneven surface formed on its outer periphery, an air flow path switching valve that operates by contacting the cam, and this flow path switching device. A cleaning device comprising a cleaning liquid cutoff valve and an air cutoff valve that are operated by air supplied through the valve to supply and stop the cleaning liquid and air.