JPH0338480Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a device that removes chips and the like generated during cutting of a workpiece by blowing and sucking compressed air.
This invention relates to a switching air booster that allows switching between blowing and suction with a single touch.

(Prior art) A device that uses a so-called air boost mechanism that doubles the flow of air out and in by utilizing the principle of spraying to remove chips, etc. generated during cutting of a workpiece, for example. Usually, as shown in Fig. 1, a member a having an orifice b formed diagonally is attached to the compressed air intake port d of a conduit c so that the attachment direction can be changed, and the attachment direction can be selected. Either the compressed air blown forward can be used to blow air out to the tip of the conduit c to blow away chips, etc. (Figure 1 A), or the compressed air blown backwards from the conduit c can be used to blow the chips away from the tip of the conduit c (Figure 1 B). It is constructed to be able to suck up chips, etc.

However, this type of device not only requires cumbersome operations such as having to remove and change the orientation of member a each time depending on how to dispose of chips, etc., but also blows out diagonally to the member. The problem is that it is extremely difficult to process the holes.

(Purpose) The present invention was developed in view of the above problem, and its purpose is to make it easier to switch between blowing and suction.
Moreover, it is an object of the present invention to provide an improved air booster whose members are easy to process.

(Structure) Therefore, details of the present invention will be described below based on illustrated embodiments.

Figures 2 and 3 show an embodiment of the present invention, and reference numeral 1 in the figures indicates a valve body that switches the direction of air blowout, which is interposed between the front and rear pipes 2 and 2'. Inside the outer tube 3 connected to the front and rear pipes 2, 2', a bobbin-shaped member consisting of a central communicating tube 4 and flanged partition plates 5, 5' at both ends is clamped and fixed. , the cylindrical space 7 surrounded by the outer tube 3, the communication tube 4, and the partition plates 5 and 5',
A cylindrical floating valve 8 is slidably disposed to selectively close one of the orifices 6..., 6'... bored around each of the partition plates 5, 5'. ing. Further, an operating tube 9 is slidably attached to the outer periphery of the outer tube 3, and the tip of a pin 10 inserted from the operating tube 9 toward its axis is
A pipe joint 13 that passes through an axial slit 11 drilled on the outer cylinder 3 and engages with a groove 12 cut on the outer periphery of the floating valve 8, and is further fixed to the operating cylinder 9, An air pipe 14 communicating with a compressed air supply source (not shown) is connected and configured to flow into the space 7 through a through hole 15 provided in the outer cylinder 4.

In the figure, reference numeral 16 indicates a flexible tube connected between the rear pipe 2' end and the chip storage tank 17, and 18 indicates a valve at the air intake port when the operation tube 9 is slid in the air blowing direction. A wire 19 is stretched between the two to open the wire 19, and a wire 20 indicates a filter provided at the exhaust port 21 of the chip storage tank 17.

In the above-mentioned device, the operation cylinder 9 is now moved to the right in the figure, that is, to the rear, and the idle valve 8 is moved in the same direction via the pin 10 installed there to close the rear orifice 6'. , At the same time, valve 1
9 is opened, the compressed air that has flowed into the space 7 through the pipe joint 13 is blown out from the orifice 6 in the front, as shown in FIG.
While sucking the air flowing in from the air intake port, the air is combined with the air and ejected in front of the pipe 2, blowing away chips and the like generated by cutting the workpiece.

Furthermore, when the operating tube 9 is moved to the left in the figure, that is, to the front, and the front orifice 6 is closed, the compressed air that has flowed in through the pipe joint 13 is blown out from the rear orifice 6' and closes that part. A negative pressure is applied to suck air together with chips from the two ends of the front pipe, and the air is sent to the chip storage tank 17 (FIG. 3).

(Effects) As described above, according to the present invention, a bobbin-shaped communication pipe with flange-like partition plates at both ends is disposed inside the air blowing/suction cylinder, and the communication pipe is connected to the partition plates at both ends. A floating valve is provided in the cylindrical space formed between the cylindrical space and the cylindrical space to selectively close one of the orifices provided in the partition wall by external operation, and an air pipe that supplies compressed air to the cylindrical space. Now that the air is in communication, the direction of the compressed air flow can be changed simply by moving the idle valve to either side.
Not only can you easily switch between blowing and suction, but even if the idle valve is not moved completely, the compressed air sent into the cylindrical space can move it to the required position. By moving and press-contacting it toward the partition plate, incomplete valve operation can be compensated for and a reliable blow-out and suction operation can be performed. This allows the air flow inside the cylinder to be rectified, so especially when sucking chips, etc., the upstream side It is possible to avoid inconveniences such as chips or the like entering the orifice of the partition plate facing the diaphragm and causing clogging in this area.

Furthermore, in order to form the orifice in the partition plate, it is sufficient to simply drill the hole with a drill pointing in the axial direction of the communication pipe, so that the machining can be significantly facilitated.

[Brief explanation of the drawing]

Figures 1A and 1B are explanatory diagrams of a conventional device that switches blowout and suction by replacing parts, Figure 2 is an overall configuration diagram of a device showing an embodiment of the present invention, and Figure 3 , B are sectional views showing each switching state in the same device. 2, 2'...pipe, 3...outer cylinder, 4...communicating pipe, 5,5'...diaphragm, 6,6'...orifice,
8...Idle valve, 9...Operation cylinder, 13...Pipe joint.

Claims (1)

[Scope of utility model registration request] A bobbin-shaped communication tube with flange-shaped partitions on both ends is placed inside the air blowing and suction tube.
A large number of orifices communicating with the inside of the cylinder are formed in both the partition plates, and either one of the partition plates is inserted into the cylindrical space formed between the partition plate and the communication pipe by being operated by an external member. A switching system for forming a blowout and suction air flow, characterized in that an idler valve for selectively closing an orifice of the valve is slidably provided, and an air pipe for supplying compressed air is communicated with the cylindrical space. Type air booster.