JPH0523545Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cutting device for cutting plate-shaped objects such as plate glass.

[Conventional technology]

The water knife cutting system runs a belt conveyor to move the plate, and when the plate reaches a predetermined cutting position, the belt conveyor stops operating, and then the plate is cut at the upper side of the plate. While moving the nozzle along the line,
Cutting is performed using an ultra-high pressure jet water stream sprayed from the nozzle.

Further, the injected jet water stream is received by a tank installed on the lower side of the plate-like body.

Furthermore, on the upstream and downstream sides of the nozzle travel line, there are head pulleys of the upstream belt conveyor,
The tail pulley of the downstream belt conveyor is placed in parallel with the belt at a predetermined distance, so that the belt does not come into contact with the ultra-high pressure jet water stream injected from the nozzle.

[The problem that the idea attempts to solve]

When the jet water stream sprayed from the nozzle flows into the tank and is received, the water splashes inside the tank, and the splashed water flows upward from the opening at the upper edge of the tank, causing water to accumulate and become dirty at the work site. It was hot.

Furthermore, even if an attempt is made to alleviate the above-mentioned problem by increasing the distance between the nozzle and the tank, the jet water flow will spread as it approaches the opening at the upper edge of the tank. The opening must be made larger.

Therefore, the amount of water scattered from the upper edge opening of the tank increases, and the tank is brought closer to the plate-shaped body to some extent.

When the tank was moved closer to the tank, the cut particles mixed in the outflow water collided with the surface of the glass plate, damaging the surface of the glass plate and causing defective products.

[Means to solve the problem]

In order to solve the above problems, this invention includes a first conveyance path on the upstream side, a second conveyance path on the downstream side provided with a predetermined gap in front of the first conveyance path,
In a plate-shaped cutting device comprising a nozzle that moves back and forth between the upper ends of the gap and sprays an ultra-high-pressure jet water stream downward, and a tank that is installed below the gap to receive the jet stream. The jet water flow inflow opening of the tank is provided with a nozzle for air or water curtain.

[Effect]

A curtain is created above the opening of the tank by air and water jetted from the nozzle to prevent water from flowing out of the tank.

〔Example〕

In the figure, 1 is a first conveyance path on the upstream side, and 2 is a second conveyance path on the downstream side, which is provided in front of the first conveyance path 1 with a predetermined gap.

As shown in FIGS. 1 and 2, the first conveyance path 1 and the second conveyance path 2 are comprised of two lower pulleys 4 and 4 parallel to each other midway on the carrier side of one long belt conveyor 3. A predetermined gap is formed between the upstream head and the downstream tail of the single belt conveyor 3 by the two parallel upper pulleys 5, 5. It may also be a belt conveyor for books.

In the illustrated case, the roller conveyor 6 is provided in front of the first conveyance path 1 and in front of the second conveyance path 2, but
The belt conveyor 3 may be extended.

Further, above the first conveyance path 1 and the second conveyance path 2, the first conveyance path 1 and the second conveyance path 2 are separated by an ultra-high pressure jet water flow that reciprocates between both ends of the gap and is sprayed downward. A nozzle 7 is provided for cutting a plate-like object A such as a plate glass which is stopped straddling the two.

The reciprocating motion of the nozzle 7 is caused by the rail 8 in the illustrated case.
This is done by making the holder 9 of the nozzle 7 slidable along the same direction, and screwing the female screw 12 of the holder 9 into the male screw 11 driven by the reversible operation of the motor 10.

Further, on the upstream side and the downstream side of the gap between the first conveyance path 1 and the second conveyance path 2, there are provided parallel jets with an interval for passage of the jet water flow, and water or air is directed upward. A spouting device 13 is provided which sprays to push up both sides of the cut edge of the plate-like body A and prevents the cut pieces a cut and separated from the plate-like body A from falling downward.

The above-mentioned jetting device 13 has a box 15 having numerous small holes 14 on the top wall as shown in FIG. 3, and water and air are press-fitted into the box 15. ) may be placed.

A tank 16 is provided below the gap to receive the jet water flow from the nozzle 7, and near the opening of the tank 16 is a nozzle that creates an air or water curtain to prevent water from flowing out of the tank 16. 17 are provided.

As shown in FIGS. 3 and 4, the nozzle 17 has two boxes 19, 19 each having an opening 18 formed by numerous small holes or slits in the vertical walls facing each other. pipes 20 to both boxes 19, 19.
The air press-fitted from the hole is injected from the opening 18,
Alternatively, there may be an air curtain method in which air is injected from the opening 18 of one box 19 and sucked into the other box 19, the inside of which is absorbed by a pipe 20, as shown in FIGS. 5 and 6. Pour water into one box 19 through opening 1.
A water curtain method is adopted in which water is injected from the box 8, the injected water is sucked into a box 19 with suction inside, and then discharged from a pipe 20, or a method in which a number of nozzles (not shown) are arranged in place of the box described above. You can.

Note that the injection pressure of the air and water forming the air and water curtain is set lower than that of the jet water flow so that the jet water flow can pass through. In the figure, 21 is a drainage pipe provided in the tank 16.

〔effect〕

As described above, according to the plate cutting device according to this invention, a curtain is created by the air or water sprayed from the nozzle into the opening of the tank, so that the water flow that flows into the tank is scattered inside the tank and exits from the opening. Air or water can be used to prevent it from flowing outward.

Therefore, it is possible to eliminate the inconvenience of water remaining near the workplace and making it dirty.

It also prevents cutting particles from flowing out of the tank.
It is also possible to eliminate the problem of particles colliding with the glass plate surface and damaging the plate surface.

[Brief explanation of drawings]

Fig. 1 is a side view of the cutting device according to this invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged vertical side view showing the main parts forming the air curtain, Fig. 4 is a perspective view of the box, and Fig. 4 is a perspective view of the box. FIG. 5 is an enlarged longitudinal side view of the main parts forming the water curtain, and FIG. 6 is a perspective view of the box. A... Plate-shaped body, 1... First conveyance path, 2... Second
Conveyance path, 7...Nozzle, 13...Ejection device, 16
...Tank, 17...Nozzle.

Claims (1)

[Scope of utility model registration request] A first conveyance path on the upstream side, a second conveyance path on the downstream side provided with a predetermined gap in front of the first conveyance path, and a reciprocating movement between the upper ends of the gap, and downward. In a plate-shaped cutting device consisting of a nozzle installed to spray an ultra-high-pressure jet water stream and a tank installed below a gap to receive the jet stream, an air or water curtain nozzle is installed at the jet stream inflow opening of the tank. A device for cutting a plate-shaped object, characterized in that it is provided with: