JPH02198800A - Water jet gun with plural orifice - Google Patents

Abstract

PURPOSE:To inject water jets plural times the number of nozzle by providing plural orifices formed by an object as hard as diamond, etc. to a nozzle hole. CONSTITUTION:Plural orifices 10a made of diamond, etc. are provided to a nozzle hole 10 of a nozzle head 4 of a water jet gun 1. As a result, water jets plural times the number of the nozzle are injected.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention broadly relates to tools and machine tools that use ultra-high pressure water, and particularly to guns that discharge ultra-high pressure water. be.

In particular, the first invention relates to a water jet gun in which a plurality of orifices are provided in the diamond or the like in the nozzle hole of the nozzle body, and the second invention is in addition to the first invention. The present invention relates to a multi-orifice water jet gun in which the nozzle and the autojet vibrator are integrated, and the nozzle head is further improved.

And, the third invention is, in addition to the above-mentioned second invention,
This invention relates to a multi-orifice water jet gun that has a plurality of water jet pipes and is arranged in a counterbalanced manner.

[Prior art] Water jets have recently been widely used in various places.
It's becoming common. In particular, the thread-like ultra-high pressure water released from the gun is widely used for cutting materials other than metals and for surface treatment of metals and other materials.

The gun is equipped with a nozzle that emits ultra-high pressure water, but the nozzle head uses a large number of nozzles to ensure efficient and uniform surface treatment of metals and other materials. There is. The number of orifices provided in the high hardness object such as diamond in the nozzle hole of the nozzle body of -i was one.

In addition, the water jet pipe and the nozzle head connected to it were made separately and screwed together.

Furthermore, the nozzle head has an independent nozzle as shown in FIG. 2, and a hole 60 into which the independent nozzle body 51 is inserted is provided in the nozzle head 4 of the can.
The nozzle body 51 is fitted into the hole 60 for the nozzle body 51 of the nozzle head 4 of the gun, and finally the nozzle body 51
To prevent the nozzle body 51 from falling out of the hole, another screw 52 is placed on top of it to secure the nozzle body 51.

On the other hand, when processing the surface of a workpiece with a waterjet gun, the nozzle head must be attached to the gun so that the waterjet hits the surface of the workpiece evenly and there is no unevenness. It is common to perform double motion (oscillation, rotation, etc.) at high speed within the interior.

In this case, the position of the nozzle or pipe may not be at the center of the head or pipe, or may fluctuate, so the center of gravity of the pipe or head is always biased, and the high-speed double motion causes large vibrations in the gun. Ru. In order to prevent this, conventionally, a counterbalance against the fluctuation was provided in the pipe etc. to maintain the balance.

[Problems to be Solved by the Invention] However, in the first case described above, the number of orifices provided in the high hardness object such as diamond in the nozzle holes of the - number of nozzle bodies is one. Therefore, in order to prevent uneven processing, the nozzle head must be provided with a large number of nozzles. Therefore, in order to increase the number of orifices in the nozzle head, it is necessary to increase the number of nozzle bodies by the number of nozzle bodies, which increases the cost accordingly.

On the other hand, in the second case described above, if the water jet pipe and the nozzle head to be connected to it are made separately and screwed together, the pressure resistance of the joint part will be reduced.

Furthermore, since the water jet is emitted from the orifice 10, which is a narrow nozzle hole such as the eye of a needle, the orifice 10 of the nozzle hole is easily clogged with debris in the water. Therefore, the nozzle is not fixed to the nozzle head 4 of the gun, but is detachably attached to the hole 60 of the nozzle head 40 as an independent nozzle body 51 for cleaning or replacement.

Then, as mentioned above, this independent nozzle body 51 is tightened into the hole 60 for the nozzle body 51 of the nozzle head 4 with the screw 52 for tightening, so that it will not come off from the nozzle head 4 due to the water pressure. It is being Furthermore, if there is a gap between the hole 60 for the nozzle body 51 of the nozzle head 4 of the gun and the nozzle body 51, ultra-high pressure water will leak from that gap, so an O-ring 9 is inserted in between to close the gap. .

In this case, when the nozzle body 51 is tightened with the screw 52, the O-ring 9 will be crushed. Therefore, the gap is closed, and now the orifice l provided in the diamond or the like of the nozzle hole 10 of the nozzle body 51 is closed.
Even if an attempt is made to remove the nozzle body 51 when the OA is clogged, the crushed O-ring 9 prevents the nozzle body 51 from being removed from the nozzle 660 for the nozzle body 51.

Therefore, this nozzle body 51 is attached to the nozzle head 4 of the gun.
To take out the nozzle body 51 from the nozzle body 51, remove the screw 52 for tightening the nozzle body 51, and apply water pressure to the nozzle body 51 from the inside. in this case,
Although the nozzle body 51 is covered with a cover to prevent it from flying far away, the crushed O-ring 9 is
1 has a strong adhesion force to the six 60, this nozzle body 51
The force with which it pops out when it leaves the hole 60 is very strong.
They often break through the cover and fly out, which is very dangerous.

In the third case above, since a counterbalance is used to eliminate the backward movement of the pipe, the gun naturally becomes heavier by the amount of the counterbalance. In this case, the driving force must be increased accordingly, and the gun becomes heavier, which reduces work efficiency.

[Means for Solving the Problems] In view of the above problems, the first invention of the multi-orifice water jet gun according to the present invention has a plurality of orifices provided in the diamond or the like of the nozzle hole of the nozzle body. This is what I did. The second invention further integrates the water jet pipe and its nozzle head to strengthen its water pressure resistance, and also integrates the gun's nozzle body and a tightening screw for fixing this nozzle body. It is something. Furthermore, the third invention includes a plurality of water jet pipes according to the first invention and arranges them in a counterbalanced manner.

The specific configuration of the multi-orifice water jet gun according to the present invention will be described in detail below.

First, the configuration of the first invention will be described. The invention first includes a water jet gun body.

Next is the water jet pipe. This water jet pipe is provided in the gun body described above. And then there's the nozzle head.

This nozzle head is provided at the tip of the water jet pipe described above.

And there is a nozzle hole. This nozzle hole is provided in the nozzle head described above. Finally, a high hardness object such as diamond is provided in the nozzle hole and has a plurality of orifices.

Next, the configuration of the second invention will be described. Since this invention is the same as the first invention described above except for the following points, the entire detailed description of the first invention described above is incorporated herein in its entirety except for the following points.

This water jet pipe has a nozzle head integrated with the pipe at its tip. Furthermore, the above nozzle head has holes for the following nozzle bodies. This hole for the nozzle body is provided at the tip of the nozzle head, and has a threaded groove toward the tip.

Then there is the nozzle body. This nozzle body fits into the hole for the nozzle body described above, and the tip thereof becomes a thread groove that fits into the thread groove described above.

Finally, there is the 0 ring. This O-ring fills the gap between the nozzle body and the nozzle body hole.

Finally, the configuration of the third invention will be described. Since this invention is the same as the first invention described above except for the following points, the entire detailed description of the first invention described above is incorporated herein in its entirety except for the following points.

Thus, the water jet pipes described above are composed of a plurality of water jet pipes, and the plurality of water jet pipes are caused to move backward by the above-mentioned backward movement means. The plurality of water jet pipes are also arranged in a counterbalanced manner so that the respective images that occur during the return movement cancel each other out.

Additionally, there are multiple nozzle heads. This nozzle head is provided at each of the tips of the plurality of water jet pipes. Finally, each of the plurality of nozzle heads is provided with a nozzle.

[Function] The specific action of the multi-orifice water jet gun according to the present invention will be explained in detail below.

First, the operation of the first invention will be described. In this invention, first, since the orifice provided in the diamond or the like of the nozzle hole of the nozzle head of the gun body of the water jet is composed of a plurality of orifices, water jets of multiple times the number of nozzles are emitted from the orifice.

Next, the operation of the second invention will be described. Since this invention is the same as the first invention described above except for the following points, the entire detailed description of the first invention described above is hereby incorporated by reference except for the following points.

Thus, the water jet pipe integrated with the nozzle head can be operated at that location without the possibility of water leakage under ultra-high pressure.

Furthermore, the nozzle head provided at the tip of the water jet pipe has a threaded groove toward the tip of the hole for the nozzle body, and the nozzle body fits into the hole for the nozzle body. Since the end of the nozzle body has a threaded groove that fits into the threaded groove, the nozzle body can be inserted into and taken out from the hole for the nozzle body by turning the nozzle body. Finally, an O-ring fills the gap between the nozzle body and the nozzle body hole.

Finally, the operation of the third invention will be described. Since this invention is the same as the first invention described above except for the following points, the entire detailed description of the first invention described above is incorporated herein in its entirety except for the following points.

Since the plurality of water jet pipes provided in the gun body of the water jet are moved backward by the backward movement means, the water jets are scattered. Furthermore, the plurality of water jet pipes mutually cancel each other out as a counterbalance of the respective vibrations generated during their return movements. A nozzle head is provided at each of the tips of the plurality of water jet pipes, and discharges a large number of water jets from the nozzle holes.

[Example] A multi-orifice water jet gun according to the present invention will be described in detail below using an example thereof with reference to the accompanying drawings.

FIG. 1 is a side sectional view of a first embodiment of a multi-orifice water jet gun according to the present invention. FIG. 2 is an enlarged side cross-sectional view of the vicinity of a conventional nozzle. FIG. 3 is an enlarged side sectional view of the nozzle and its vicinity of the one shown in FIG. FIG. 4 shows a front view of the one shown in FIG. 3.

First, there is the water jet gun body l.

Next, there is a water jet vibrator 3 provided on the gun body l mentioned above. There is a nozzle head 4 provided at the tip of this water jet vibrator 3. Furthermore, there is a nozzle hole 10 provided in this nozzle head 4. This nozzle hole 10 has an orifice 10a provided in a diamond or the like. Two orifices 10a are provided for the nozzle hole 10, as shown in the enlarged side sectional view shown in FIG. A plurality of these nozzles may be provided in the nozzle head 4 as the nozzle body 5 described below, as shown in a front view of a portion of the nozzle head 4 shown in FIG.

Next, an embodiment of the second invention will be described.

First, the nozzle head 4 described above is formed integrally with the water jet vibrator 3 described above. Therefore, the water jet that previously withstood a pressure of about 1,500 kg can now withstand a pressure of about 2,500 kg.

Then, there is a nozzle body 5. Furthermore, a hole 6 for the nozzle body 5 is provided at the tip of the nozzle head 4. This six 6 for the nozzle body 5 has a threaded groove 7 toward its tip. The nozzle body 5 is fitted into the nozzle 6 for the nozzle body 5, and has a threaded groove 8 at the tip that fits into the threaded groove 7. be.

Furthermore, the above nozzle body 5 and the above nozzle body δ six 6
There is an O-ring 9 that fills the gap. Therefore, in the invention of the "water jet gun" submitted at the same time, the nozzle hole 10 of the nozzle body 5 has one orifice 10a as shown in the side sectional view shown in FIG.

The other configurations are similar to the embodiment of the first invention described above. Of course, this can also be applied to general water jet guns.

Finally, the third invention will be explained in detail using one embodiment thereof with reference to the accompanying drawings.

FIG. 6 is a third embodiment of the multi-orifice water jet gun according to the present invention, and shows an enlarged front view for explaining the driving relationship between the reciprocating means and the nozzle. be. FIG. 7 shows a reduced plan sectional view of the one shown in FIG.

First, there is a water jet gun body 1.

Next, there are two pairs of rotating means 2, which are one of the reciprocating means. Although only one pair of rotating means 2 is visible in FIG. 7, the same pair exists hidden behind this rotating means. In the same way, other components have exactly the same things hidden behind them.

Therefore, this rotating means 2 is provided in the gun body lj described above. Note that the drive source for the rotating means 2 may be provided in the gun body 1 or may be provided outside the gun body 1.

Furthermore, there are two water jet vibes 3. These two water jet vibes 3 are driven by the rotation means 2 described above through a nozzle head 4 described below. These two water jet vibrators 3 are also provided so that their respective vibrations generated when they are driven cancel each other out.

That is, the rotating means 2, 2 of the nozzle head 4.4 described below
As shown in FIG. 5, the positions 2a and 2a' are offset by 180 degrees so that they counterbalance each other and absorb the vibration. Therefore, these two water jet vibrators 3, 3 may be configured to be swung by the rotation means 2 described above.

Furthermore, there is a pair of nozzle heads 4.4. The pair of nozzle heads 4, 4 are parallel rectangular nozzle heads, and are provided at the tips of the two water jet vibrators 2, respectively. The ends of these arms are each rotatably connected to the outer edge of the rotating means 2, and move back and forth like the power transmission arms of the driving wheels of a steam locomotive.

In this way, a plurality of water jets are ejected from the plurality of nozzle holes 10.

In addition to the above embodiments, the following may also be considered. That is, as shown in the enlarged plan sectional view shown in FIG. 8 and the enlarged front view shown in FIG. It rotates in a counterbalanced manner.

The other configurations are the same as the embodiment of the second invention described above.

[Effect of the invention] That is, in the first invention, since the number of orifices is increased multiple times, the same number of nozzle bodies can emit water jets that are multiple times the number of nozzles. Furthermore, in the second invention, in addition to the above effects, the pair of nozzle heads are each integrated with the two water jet vibrators. Because of this structure, the water jet, which could previously only withstand a pressure of about 1,500 kg, can now withstand a pressure of about 2,500 kg. In addition, it is very easy to remove the nozzle body when the nozzle becomes clogged.
It's even safer now.

Finally, in the third invention, in addition to the effects of the first invention, by making the water jet double-action gun have multiple heads, the water jet vibe coupled to it and its heads can be counterbalanced. This made it possible to eliminate the use of a separate counterbalance, reduce the overall weight of the gun, and improve work efficiency.

[Brief explanation of the drawing]

FIG. 1 shows a side cross-sectional view of a first embodiment of a multi-orifice water jet gun according to the present invention. FIG. 2 is an enlarged side sectional view of the vicinity of the nozzle of an example of the conventional one. The third section is an enlarged side sectional view of the nozzle and its vicinity of the one shown in FIG. FIG. 4 shows a front view of the one shown in FIG. 3. FIG. 5 is an enlarged side sectional view of the vicinity of the nozzle of one embodiment of the simultaneously filed application. FIG. 6 is a third embodiment of the multi-orifice water jet gun according to the present invention, and shows an enlarged front view for explaining the relationship between the reciprocating means and the nozzle. be. FIG. 7 shows a reduced plan sectional view of the one shown in FIG. FIG. 8 shows a side sectional view of another embodiment. FIG. 9 shows a front view of the one shown in FIG. 8. 1...Gun body 2...Rotating means 3...
・Water jet vibe 4... Nozzle head 5... Nozzle body 6...
・Hole for nozzle body 7, 8...Thread groove 9...0
Ring 10a... Orifice IO... Nozzle hole

Claims (3)

[Claims] (1) A water jet gun body, a water jet pipe provided in the gun body, a nozzle head provided at the tip of the water jet pipe, a nozzle hole provided in the nozzle head, and a water jet pipe provided in the nozzle hole. A multi-orifice water jet gun characterized by being composed of a highly hard object such as diamond, which has a plurality of orifices. (2) A water jet gun body, a water jet pipe provided in the gun body, a nozzle head provided integrally with the water jet pipe at the tip of the water jet pipe, and a nozzle body provided in the nozzle head. A nozzle body that fits into the hole for the nozzle body, the tip of which has a thread groove that fits into the above-mentioned thread groove, and A multi-orifice water jet gun comprising: a nozzle hole having a plurality of orifices; and an O-ring that fills a gap between the nozzle body and the nozzle body hole. (3) a water jet gun body, a return movement means provided on the gun body, a plurality of water jet pipes that are caused to move back by the return movement means and are arranged in a counterbalance manner; Each nozzle head provided integrally with each water jet pipe at the tip of a plurality of water jet pipes, and a hole for a nozzle body of each nozzle head, each having a threaded groove near each tip, and The nozzle hole has a plurality of orifices, and the nozzle body fits into each hole for each nozzle body, and each end has a thread groove that fits into each of the above thread grooves. 1. A multi-orifice water jet gun, comprising: a plurality of nozzle bodies, and O-rings that fill gaps between the nozzle bodies and the holes for the nozzle bodies.