JP3049581B2 - A router with an opening and closing mechanism for the dust collection duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for opening and closing a dust collecting passage when a dust collector is attached to a spindle of a router for processing a printed circuit board or the like.

[0002]

2. Description of the Related Art The configuration of a conventional router with a dust collector will be described with reference to FIG. In FIG. 3, 1 is a spindle, 2 is a shield, 3 is a duct, 4 is an on-off valve, 5 is a duct, 6A is driving means such as a cylinder, and 10 is a dust collector.

In FIG. 3, when a spindle 1 processes a printed circuit board or the like, a tool portion is covered with a shielding portion 2 so as to forcibly remove the cutting dust, and the cutting dust is sucked out of the shielding portion 2. An outlet 2A of the shield 2 is connected to an end 3A of the duct 3, and an end 3B of the duct 3 is connected to a suction port 4A of the on-off valve 4. The outlet 4B of the on-off valve 4 is at the end 5A of the duct 5.
And the end 5B of the duct 5 is connected to the dust collector 10.

In FIG. 3, when the dust collection is stopped, if the blower of the dust collector 10 is stopped, the work efficiency is deteriorated.
Shields the dust collection path formed by FIG. 3 shows the on-off valve 4
It is a state figure in which the dust collection airway is formed by the flow path 11A of the valve element 11 sliding inside. The driving means 6A from the state of FIG.
When is driven, the valve body 11 blocks the dust collecting air passage, so that dust collecting can be stopped.

FIG. 4 shows another conventional example in which the dust collecting passage is closed. FIG. 4 shows a switching valve 9 in place of the on-off valve 4 of FIG. 4, the end 3B of the duct 3 is connected to the connection port 9A of the switching valve 9, and the discharge port 9C of the switching valve 9 is connected to the end 5A of the duct 5. The intake port 9B is formed on the surface facing the connection port 9A, and the valve 6D is arranged so as to shield the intake port 9B from the inside of the switching valve 9. The valve 6D reciprocates in the switching valve 9 by driving means 6E such as a cylinder.

FIG. 4 is a view showing a state in which a dust collecting passage is formed. When the driving means 6E is driven from the state shown in FIG. 4, the valve 6E closes the connection port 9A, so that dust collection can be stopped. Further, since the intake port 9B is opened to the atmosphere, no load is applied to the dust collector 10 while maintaining the operating state.

[0007]

In FIG. 3, the driving means 6 is shown.
A, the dust collection duct is blocked, but the shielding part 2 and the duct 3
Is closed, and it takes time for the negative pressure in the duct 3 to return to the atmospheric pressure. For this reason, although a small air inlet is provided in the shielding portion 2 in FIG. 3, it takes 4 to 5 seconds to reach atmospheric pressure. If the tool cuts out a small part before the inside of the shield 2 returns to the atmospheric pressure, the small part may be sucked into the shield 2. Further, in FIG. 3, since the duct 5 is also in a closed state, there is a problem that a load is imposed on the blower of the dust collector.

FIG. 4 shows a configuration in which the burden on the dust collector of FIG. 3 is reduced, but the duct 3 is closed as in FIG. 3, and the negative pressure in the duct 3 is reduced to the atmospheric pressure. There is a problem that it takes 4 to 5 seconds to return to.

According to the present invention, when the dust collection passage is closed, the first duct connected to the shielding portion is opened to the atmosphere, and the second duct connected to the dust collector is opened to the atmosphere. The purpose of the present invention is to provide a mechanism for opening and closing an air passage.

[0010]

According to a first aspect of the present invention, a shield 2 is provided so as to cover a tool portion of a spindle 1, and an outlet 2 A of the shield 2 is connected to a duct 3.
The end 3A of the duct 3 is connected to the suction port 4A of the on-off valve 4, and the outlet 4B of the on-off valve 4 is connected to the duct 5
And the fourth end 5B of the duct 5
Is connected to the dust collector 10, and when the driving means 6A is driven to close the on-off valve 4, the dust collection is stopped. In the router with the dust collector, the valve element 7 is attached to the driving means 6A, and the valve element 7 The valve 7 reciprocates in the on-off valve 4 to open and close the air path.
When the driving means 6A is driven, the duct 3 is connected to the flow path 7A and is opened to the atmosphere.
The duct 5 is connected to the flow path 7B and is opened to the atmosphere.

In the second invention, the shield 2 is arranged so as to cover the tool portion of the spindle 1, the outlet 2A of the shield 2 is connected to the end 3A of the duct 3, and the end 3B of the duct 3 is connected to the end 3A of the duct 3. The valve 6D is connected to the connection port 9A of the switching valve 9, the intake port 9B is formed on the surface facing the connection port 9A, and the valve 6D is disposed so as to shield the intake port 9B from the inside of the switching valve 9. Means 6E
Reciprocating in the switching valve 9, the outlet 9C of the switching valve 9 is connected to the end 5A of the duct 5, the end 5B of the duct 5 is connected to the dust collector 10, and the driving means 6E is driven. The valve 6D connects the end 3B of the duct 3 to the suction port 8A of the exhaust valve 8 in a router with a dust collector that opens the intake port 9B to the atmosphere and shields the connection port 9A to stop dust collection. The discharge port 8C of the valve 8 is connected to the connection port 9A of the switching valve 9,
An exhaust port 8B is formed on a side surface of the exhaust valve 8, a driving unit 6C that shields the exhaust port 8B with the valve 6B is arranged, and the driving unit 6E and the driving unit 6C are driven. The valve 6B opens the exhaust port 8B. The duct 3 is connected to the exhaust port 8B and is opened to the atmosphere.

[0012]

Next, the configuration of the dust collecting air passage opening / closing mechanism according to the first invention will be described with reference to FIG. 1 in FIG. 1 is a valve body,
Others are the same as FIG. That is, FIG.
The valve body 11 is replaced with the valve body 7. A flow path 7A, a flow path 7B, and a flow path 7C are formed in the valve body 7.

FIG. 1A shows a state in which the duct 3 and the duct 5 are connected to each other through the flow path 7C and are collected. FIG. 1A shows a state in which the driving means 6A is driven from the state of FIG. In the state shown in FIG. 1A, the duct 3 is connected to the flow path 7A and is open to the atmosphere, and the duct 5 is connected to the flow path 7B and is open to the atmosphere.

The state shown in FIG. 1A is a state in which the dust collection passage is closed, and is switched to the state shown in FIG. In the state shown in FIG. 1A, since the duct 3 is opened to the atmosphere through the flow path 7A, the inside of the shielding portion 2 instantaneously changes from negative pressure to atmospheric pressure. Therefore, the processing can be continued without the cut-out small parts being sucked into the shielding portion 2. Further, since the duct 5 is opened to the atmosphere through the flow path 7B, no burden is imposed on the blower of the dust collector.

Next, the structure of the dust collecting air passage opening / closing mechanism according to the second invention will be described with reference to FIG. 2B is a valve, 6B in FIG.
C is a drive means, 8 is an exhaust valve, and others are the same as those in FIG. That is, FIG. 2 is obtained by adding the exhaust valve 8, the valve 6B, and the driving means 6C to the switching valve 9 of FIG.

In FIG. 2, the end 3 B of the duct 3 is connected to the exhaust valve 8.
And an exhaust port 8B is formed on the side surface of the exhaust valve 8. The drive means 6 which the valve 6B shields is provided at the exhaust port 8B.
Place C. The discharge port 8C of the exhaust valve 8 is connected to the connection port 9A of the switching valve 9.

FIG. 2A shows that the valve 6B is an exhaust port 8B of the exhaust valve 8.
Is closed, the valve 6D seals the intake port 9B of the switching valve 9 from the inside, and the duct 3 and the duct 5 are in a state where a dust collecting passage is formed through the exhaust valve 8 and the switching valve 9. When the driving means 6C and the driving means 6E are driven from the state shown in FIG.
It becomes the state of I. In FIG. 2A, the valve 6D opens the intake port 9B and shields the exhaust port 8C, and the valve 6B opens the exhaust port 8B. In the state shown in FIG. 2A, since the duct 3 is opened to the atmosphere through the exhaust port 8B, the inside of the shielding portion 2 instantaneously changes from negative pressure to atmospheric pressure.

[0018]

According to the present invention, when the dust collection passage is closed, the first duct connected to the shielding portion is opened to the atmosphere, and the second duct connected to the dust collector is opened to the atmosphere. Therefore, the suction of the shielding part can be stopped at a high speed, and the processing can be efficiently performed even when processing a small part that is sucked by the shielding part.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an opening / closing mechanism of a dust collecting passage according to a first invention.

FIG. 2 is a configuration diagram of a dust collecting air passage opening / closing mechanism according to a second invention.

FIG. 3 is a configuration diagram of a conventional router with a dust collector.

FIG. 4 is another configuration diagram of a router with a dust collector according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spindle 2 Shielding part 2A Outlet 3 Duct 3A end 3B end 4 On-off valve 4A Suction port 4B Outlet 5 Duct 5A end 5B end 6A Driving means 6B valve 6C Driving means 6D valve 6E Driving means 7 Valve body Flow path 7B Flow path 8 Exhaust valve 8A Suction port 8B Exhaust port 8C Exhaust port 9 Switching valve 9A Connection port 9B Intake port 9C Exhaust port 10 Dust collector

Claims (2)

(57) [Claims] A shield (2) is arranged so as to cover a tool part of a spindle (1), and a first outlet (2A) of the shield (2) is connected to a first outlet (3) of a first duct (3). End of the first duct (3) and the second end (3B) of the first duct (3) to the first inlet (4) of the on-off valve (4).
A), the second outlet (4B) of the on-off valve (4) is connected to the third end (5A) of the second duct (5), and the second duct (5)
The fourth end (5B) is connected to a dust collector (10), and when the first drive means (6A) is driven to close the on-off valve (4), the dust collector stops the dust collection. In the above, a valve element (7) is attached to the first driving means (6A), and the valve element (7) reciprocates in the on-off valve (4) so as to open and close the dust collecting air path. A first flow path (7A) and a second flow path (7B) are formed, and when the first driving means (6A) is driven, the first duct (3) is moved to the first flow path (7A). And a second duct (5) connected to the second flow path (7B) and opened to the atmosphere, the router having a dust-collecting air passage opening / closing mechanism. 2. A shielding part (2) is arranged so as to cover a tool part of a spindle (1), and a first outlet (2A) of the shielding part (2) is connected to a first duct (3) of a first duct (3). And the second end (3B) of the first duct (3) is connected to the connection port (9A) of the switching valve (9), and the connection port (9A) faces the other end (3A). Form the intake port (9B) on the surface,
The first valve (6D) is arranged so as to shield the intake port (9B) from the inside of the switching valve (9), and the first valve (6D) is switched by the second driving means (6E). ) Reciprocate in the third discharge port (9) of the switching valve (9).
C) to the third end (5A) of the second duct (5),
When the fourth end (5B) of the duct (5) is connected to the dust collector (10) and the second driving means (6E) is driven, the first valve (6D) is connected to the intake port (9B). In a router with a dust collector that shuts off dust collection by opening the air to the atmosphere and blocking the connection port (9A), connect the second end (3B) of the first duct (3) to the exhaust valve (8). Second
And the fourth outlet (8C) of the exhaust valve (8) is connected to the connection port (9) of the switching valve (9).
A), an exhaust port (8B) is formed on the side of the exhaust valve (8), and a third drive means (6) that shields the exhaust port (8B) with the second valve (6B).
C), and drives the second driving means (6E) and the third driving means (6C). The second valve (6B) opens the exhaust port (8B) and opens the first duct (3). )
Is a router with an opening / closing mechanism for a dust collecting air path, which is connected to an exhaust port (8B) and opened to the atmosphere.