JPS6328158Y2 - - Google Patents

Description

Detailed Description of the Invention The present invention relates to a device for ejecting a fixed amount of liquid from multiple nozzles.

In the prior art, devices for pouring a fixed amount of liquid into a large number of injection points can be roughly classified as follows from the viewpoint of structure and function.

(i) A method in which a nozzle equipped with a dispenser is sequentially moved to pour the liquid into a predetermined injection location.(ii) A method in which a single dispenser is provided with multiple nozzles and a single dispenser configured as described above is used. Or a method where multiple units are provided and the liquid is poured into a predetermined injection location.

The liquid injection machine of the above method (i) requires a device to move the nozzle, so it is large and expensive, and has the disadvantage that it takes a long time to sequentially inject liquid into one location at a time.

In addition, in the liquid injection machine of the method (ii) above, the number of nozzles that can be installed in one dispenser is usually about four or less, and when five or more nozzles are connected to one dispenser, the number of nozzles between the nozzles is There is significant non-uniformity in the discharge amount. (However, the above-mentioned limit on the number of installed nozzles changes depending on the accuracy of the injection amount.) Due to these circumstances, when there are many injection points, it is necessary to install multiple dispensers, or as described in (i). It is expensive because it requires the use of a mobile device. Furthermore, if multiple nozzles are connected to one dispenser, if one of them is blocked, the discharge volume of the remaining nozzles will tend to increase, so selective injection will significantly reduce the precision of the discharge volume. do.

The present invention was devised in view of the above circumstances, and provides a liquid injection machine that is capable of selectively discharging a certain amount of liquid from a large number of nozzles at the same time with high precision, and that is simple in structure and inexpensive. The purpose is to

In order to achieve the above object, the liquid injection machine of the present invention has a plurality of measuring holes formed in the bottom of a horizontally installed dish-shaped member, and a nozzle penetrating through the bottom of each of the holes. In addition to providing a hole, a valve for opening and closing the nozzle hole is provided, and the lower end of the valve projects below the dish-shaped member, so that the valve opens only when the protrusion of the valve is pushed up. , and an adjusting screw is provided above the valve and capable of being screwed up and down, so that when the adjusting screw is lowered, the lower surface thereof can cover and seal the measuring hole. , a rod-like member for adjusting the amount of liquid to be poured protrudes from the lower surface of the adjusting screw, and the rod-like member can move in and out of the metering hole as the adjusting screw moves up and down, and , characterized in that a means is provided for supplying the liquid to be measured onto the dish-shaped member and causing it to overflow and circulate.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1 is a front view of an embodiment of the liquid injection machine of the present invention. A dish-shaped member 4 is installed horizontally, and the liquid in the tank 1 is sucked in by a pump 2 and is pumped into the dish-shaped member 4 through a supply pipe 3.

An overflow port 4a is bored in the bottom of the dish-shaped member 4, and the overflowing liquid flows down into the tank 1 through an overflow pipe 6. A large number of nozzles 20 are arranged and installed on the bottom surface of this dish-shaped member 4 in the following manner.
10 is a lid of the dish-shaped member 4. In this embodiment, the lid 4 is also used as a bracket for an adjusting means to be described later, so the lid 10 is made of a highly rigid steel plate.

FIG. 2 shows an enlarged detail of one nozzle 20 shown in section A of FIG. 1. Reference numeral 4 denotes the previously described dish-shaped member, and this figure shows a part of the bottom surface thereof in cross section. 1
0 is the lid described above.

A bottomed hole 5 for measurement is formed on the bottom surface of the dish-shaped member 4. Drilling a through hole 20a in the bottom of the measuring hole 5,
The through hole 20a acts as a nozzle hole through which liquid flows out, as will be described later.

A female screw hole 10a is formed in the lid 10 so as to face the measuring hole 5, and an adjustment screw 11 is screwed into the hole 10a.

The lower surface of the adjusting screw 11 is formed to a size that can cover the opening of the measuring hole 5, and an O-ring 12 is attached near the periphery of the adjusting screw 11 so that the measuring hole 5 can be sealed.

In the present invention, a rod-like member is provided protruding from the lower surface of the adjustment screw 11. In this embodiment, a cylindrical headed adjustment rod 13 is formed as the rod-like member, and is slidably fitted into the small diameter portion of the stepped through hole 11a bored in the adjustment screw 11, and is pushed downward by the spring 14. is energized. A plug 18 supports the reaction force of the spring 14, and is screwed onto the upper end of the large diameter portion of the stepped through hole 11a. With this configuration, normally the adjustment rod 13 protrudes from the lower surface of the adjustment screw 11,
When pushed up from below, the spring 14 is deflected and slides upward, allowing the above pushing up force to be relaxed and absorbed.

In this embodiment, as described above, a plurality of bottomed holes 5 for measuring are formed on the bottom surface of the dish-shaped member 4 provided horizontally, and screws can be fed in the vertical direction by opposing the measuring holes 5 above. An adjusting screw 11 is provided so that when the adjusting screw 11 is lowered, the lower surface of the adjusting screw 11 can cover and seal the measuring hole 5, and an adjusting rod 13 is made to protrude from the lower surface of the adjusting screw 11. The adjusting rod 13 is configured to move in and out of the measuring hole 5 as the adjusting screw 11 moves up and down.

The bottom surface of the bottomed metering hole 5 is formed into a conical surface, and the valve 8 is constructed by abutting against the conical surface as a valve seat to close the nozzle hole 20a. The upper part of the valve 8 is formed to have a large diameter so that it can be brought into close contact with the valve seat surface via an O-ring 9. A coil spring 7 acts as a valve spring, and urges the valve 8 in a direction to bring it into close contact with the valve seat.

In this embodiment, the lower surface of the adjustment screw 11 is also used as a spring seat for the coil spring 7.

The lower half of the valve 8 is formed to have a small diameter and is slidably fitted into the nozzle hole 20a, with its lower end slightly protruding below the dish-shaped member 4. This results in
When no external force is applied, the valve 8 is pushed down by the coil spring 7, closes by tightly contacting the valve seat (the conical bottom of the metering hole 5) via the O-ring 9, and closes the valve. When the lower end of 8 is pushed up, it separates from the valve seat and opens the valve.

In this embodiment, as described above, a valve 8 for opening and closing the nozzle hole 20 bored at the bottom of the metering hole 5 is provided, the lower end of the valve 8 is made to protrude below the dish-shaped member 4, and this protrusion is pushed up. The valve is configured to open only when the

FIG. 3 shows the above adjustment screw 11 viewed from above. Lid 10 screwed with this adjustment screw 11
A scale 15 is attached to the top surface of the adjustment screw 1.
A reference line 16 is displayed at 1 so that the rotation angle of the adjustment screw 11 can be easily read.

Since the liquid injection machine of this embodiment is constructed as described above, the tank 1 is pumped by the pump 2 shown in FIG.
When the liquid inside is pumped up into the dish-like member 4, a large number of measuring holes 5 formed on the bottom surface of the dish-like member 4 are filled with the liquid, and the excess liquid is returned to the tank 1 through an overflow pipe 6.

When the adjusting screw 11 is rotated and screwed downward, the adjusting rod 13 is inserted deeply into the measuring hole 5 and the liquid is discharged, so that the amount of liquid stored in the measuring hole 5 is reduced.

For the same reason, if the adjustment screw 11 is previously screwed upward, the adjustment rod 13 will be pulled out of the metering hole 5 and the amount of liquid stored in the metering hole 5 will increase.

In this way, by operating the adjustment screw 11,
The amount of liquid stored in each measuring hole 5 can be freely and precisely adjusted.

The pump 2 is stopped to stop pumping up the liquid, and the dish-shaped member 4 is lowered by a drive device (not shown).
Alternatively, the workpiece 17 to be injected with liquid is raised. When the workpiece 17 comes into contact with the valve 8 and pushes up the valve 8 to open it, the liquid stored in the metering hole 5 flows down from the nozzle hole 20a and the liquid is poured.

If there is a nozzle 20 whose liquid injection function you want to stop, set the adjustment screw 1 corresponding to that nozzle 20 in advance.
Turn 1 to lower the stroke to the fullest and seal the opening of the measuring hole 5. With this operation,
No liquid flows into the metering hole 5, and therefore no liquid flows out even if the valve 8 of the nozzle 20 is pushed up.

As can be easily understood from the above structural functions,
Even if the liquid injection function of one or more nozzles 20 is stopped, there is no possibility that the measurement of liquid in other nozzles will be affected.

Further, the liquid injection device of this embodiment is configured in a multiple nozzle type, and liquid injection is performed simultaneously in a single operation, so that the time required for the liquid injection operation is short.

Moreover, as evident from the aforementioned structural features,
The liquid injection machine of this embodiment does not require a dispenser or a means for horizontally driving the nozzle, so the overall structure is simple and inexpensive.

As explained above, when the present invention is applied, it is possible to selectively discharge a certain amount of liquid from multiple nozzles at the same time with high precision.Moreover, the structure is simple and inexpensive, making it an excellent practical solution. You can get the desired effect.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the multiple nozzle type liquid injection machine of the present invention, Figure 1 is a partially sectional front view, and Figure 2 is a section A shown in Figure 1. The enlarged detailed view, FIG. 3, is an external view of part A seen from above. 1...tank, 2...pump, 3...supply pipe,
4...Dish-shaped member, 5...Measurement hole, 6...Overflow pipe, 7...Coil spring acting as a valve spring, 8...Valve, 9...O-ring, 10...Lid, 1
0a...Female screw hole, 11...Adjustment screw, 11a...
...Stepped through hole, 12...O ring, 13...Adjustment rod as a rod-shaped member for adjusting the amount of liquid injected protruding from the bottom surface of the adjustment screw, 14...Spring, 15...Scale, 16... Reference line, 17... Workpiece to be injected, 18... Plug, 20... Nozzle, 20a...
...Nozzle hole.

Claims (1)

[Claims for Utility Model Registration] (a) A plurality of bottomed holes for metering are formed in the bottom of a dish-shaped member provided horizontally, (b) A valve seat is formed in the bottom of each of the holes. (c) A valve for opening and closing the nozzle hole is provided in close contact with and spaced from the valve seat, the lower end of the valve is made to protrude below the dish-shaped member, and the protruding portion of the valve is provided. (d) An adjustment screw is provided above the valve, facing the valve, and capable of being screwed up and down, and the adjustment screw is lowered. (e) A rod-shaped member for adjusting the amount of liquid to be poured is provided protruding from the lower surface of the adjustment screw, and as the adjustment screw moves up and down, (f) a supply port for pouring the liquid to be measured onto the dish-shaped member; A multi-nozzle type liquid injection machine characterized by having an overflow pipe for collecting liquid.