KR20050039507A - Dispenser - Google Patents

Abstract

An object of the present invention is to provide a dispenser device having a simple structure and capable of suppressing the generation of bubbles.

A barrel 1 for storing liquid, a supply valve for controlling liquid supply from the barrel 1 to the syringe 3, a tip valve for controlling liquid supply from the syringe 3 to the nozzle 6, and a tip valve In the dispenser device provided with the plunger 7 which presses the liquid agent in the syringe 3 toward the nozzle 6 at the time of opening, the supply valve and the front end valve clamp the tubes 11 and 17 with flexibility. Or the pinch valves 13a and 13b which open and close the liquid flow path by releasing or narrowing.

Description

Dispenser unit {DISPENSER}

The present invention relates to a dispenser device for dropping a liquid agent to a workpiece at a predetermined flow rate.

5 shows a conventional dispenser device. In the barrel 1, for example, a liquid agent such as a liquid crystal is stored, and the liquid agent is supplied to the syringe 3 via the tube 2. In addition, the tube 2 is provided with a diaphragm valve 4 as a supply valve, and when the diaphragm valve 4 closes, the liquid is supplied to the syringe 3. In the syringe 3, a small amount of liquid agent of about 1 kPa can be stored.

The syringe 3 is connected to the nozzle 6 via a plug valve 5 which functions as a tip valve. And when the plug valve 5 is opened, the liquid agent in the syringe 3 is dripped from the nozzle 6 by the press operation by the plunger 7.

The plug valve 5 is comprised by the rotary valve driven by the rotary actuator 8.

In the dispenser device configured as described above, the diaphragm valve 4 is opened while the plug valve 5 is closed, and the plunger 7 is raised to supply liquid to the syringe 3 from the barrel 1 to the syringe 3. A small amount of liquid is stored in).

Subsequently, the diaphragm valve 4 is closed and the plug valve 5 is opened. In this state, the liquid agent in the syringe 3 is urged by the plunger 7. Then, the liquid agent is dripped from the nozzle 6.

Patent documents 1 and 2 disclose similar dispenser devices.

[Patent Document 1]

Japanese Patent Laid-Open No. 5-36741 (Second page 2)

[Patent Document 2]

Japanese Patent Laid-Open No. 6-126227 (page 3 Fig. 3)

In the dispenser device shown in FIG. 5, bubbles tend to be generated due to the structure of the diaphragm valve 4 used as the supply valve. In addition, even in the plug valve 5 used as the front end valve, bubbles are likely to occur due to the cavitation phenomenon caused by the rotary valve during the opening and closing operation of the valve.

And if bubbles are contained in the liquid agent in the syringe 3, since a bubble contracts at the time of the press by the plunger 7, there exists a problem that a liquid agent does not drop stably.

Moreover, in the plug valve 5 comprised by a rotary valve, generation | occurrence | production of the particle by sliding of a valve at the time of the opening-closing operation becomes a problem.

Moreover, since the diaphragm valve 4 and the plug valve 5 are complicated in structure, it takes time to disassemble and assemble at the time of washing | cleaning. In addition, the diaphragm valve 4 and the plug valve 5 are the structures with many clearance gaps which are easy to catch air bubbles. Therefore, when reusing after washing, it is necessary to reliably remove the air bubbles, and thus there is a problem that time is required for the preparation work.

An object of the present invention is to provide a dispenser device having a simple structure and capable of suppressing the generation of bubbles.

A barrel for storing liquid, a supply valve for controlling the supply of the liquid from the barrel to the syringe, a front end valve for controlling the supply of the liquid from the syringe to the nozzle, and the syringe at the time of opening of the tip valve. A dispenser device having a plunger for urging a liquid solution into the nozzle, wherein the supply valve and the front end valve are pinch valves that open and close the flow path of the liquid solution by narrowing or releasing the tube having flexibility. Configured.

The tube may include a first tube for connecting the barrel and the syringe, a second tube for connecting the syringe and the nozzle, and the pinch valve may include a first pinch valve for narrowing the first tube. It consisted of the 2nd pinch valve which clamps the said 2nd tube.

The first pinch valve made it possible to narrow the first tube in the vicinity of the syringe, that is, within a position of 10 mm from the syringe.

Moreover, the said 1st and 2nd tube was provided in parallel and it was set as the structure which drives the said 1st and 2nd pinch valve by a common actuator part.

(1st embodiment)

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment which actualized this invention is described according to FIG. The same components as in the conventional example will be described with the same reference numerals.

In the barrel 1, for example, a liquid agent such as liquid crystal is stored, and the liquid agent is supplied to the syringe 3 via the first tube 11. The said 1st tube 11 is formed with the synthetic rubber which has flexibility and corrosion resistance with respect to liquid, For example, it is formed with silicone rubber etc. The outer diameter is 3 mm and the inner diameter is 1 mm.

Both ends of the first tube 11 are connected to the barrel 1 and the syringe 3 via joints 12a and 12b, respectively.

In the vicinity of the joint part 12b, the 1st pinch valve 13a is arrange | positioned as a supply valve. As for this pinch valve 13a, the arm 15 protrudes from the actuator part 14, and three clamping members 16a-16c protrude side by side from the arm 15. As shown in FIG.

Of the confinement members 16a to 16c, the constriction members 16a and 16c on both sides are fixed to the arm 15, and the central constriction member 16b is directed toward the constriction member 16a or the constriction member 16c. It is movable. And the actuator part 14 is controlled by the control part (not shown), and the clamping member 16b is driven by the actuator part 14. As shown in FIG.

The first tube 11 is inserted between the constricting members 16a and 16b as shown in FIG. When the constricting member 16b moves toward the constricting member 16a, the first tube 11 is constricted between both the constricting members 16a and 16b so that the flow path of the liquid agent is blocked. Therefore, when the first tube 11 is not caught between both the narrowing members 16a and 16b, when the plunger 7 rises, the liquid is supplied from the barrel 1 to the syringe 3.

In addition, both the narrowing members 16a and 16b are arrange | positioned so that the 1st tube 11 may be clamped in the position within 10 mm from the joint part 12b, ie, in the vicinity of the syringe 3.

The syringe 3 is connected to the nozzle 6 via a second tube 17 having the same configuration as the first tube 11. Both ends of the second tube 17 are connected to the syringe 3 and the nozzle 6 via joints 18a and 18b, respectively.

Between the said coupling parts 18a and 18b, the 2nd pinch valve 13b is arrange | positioned as a front end valve. The 2nd pinch valve 13b is the same structure as the said 1st pinch valve 13a. That is, the 2nd pinch valve 13b is controlled by a control part, and the 2nd tube 17 can be narrowed in the position within 10 mm from the joint part 18a.

The plunger 7 is inserted into the syringe 3, and the liquid stored in the syringe 3 by the pressing operation of the plunger 7 is dripped from the nozzle 6.

In the dispenser device configured as described above, the first tube 11 is opened by the first pinch valve 13a, the second tube 17 is closed by the second pinch valve 13b, and the plunger 7 is closed. When is raised, a small amount of liquid is stored in the syringe 3.

Subsequently, the first tube 11 is closed with the first pinch valve 13a, the second tube 17 is opened with the second pinch valve 13b, and the syringe 3 is opened with the plunger 7 in this state. When the liquid agent in) is pressed, the liquid agent is dropped from the nozzle 6 at a constant speed.

In the dispenser device configured as described above, the following operational effects can be obtained.

(1) The 1st and 2nd pinch valves 13a and 13b which operate as a supply valve and a front-end valve can block the flow path of a liquid liquid by the simple structure which only clamps the 1st and 2nd tubes 11 and 17. FIG. . Therefore, generation | occurrence | production of the bubble at the time of opening / closing operation of the flow path by the 1st and 2nd pinch valves 13a and 13b can be prevented.

(2) Since the supply valve and the tip valve are simple in structure, the cleaning time and disassembly or assembly time at the time of cleaning can be shortened.

(3) Since the supply valve and the tip valve are simple in structure, the clearance which is easy to catch a bubble can be reduced. Therefore, the preparation time until resumption of use after washing can be reduced. Moreover, even if it uses the liquid substance which has high volatility and is easy to generate | occur | produce a bubble, it can stably drip.

(4) The first pinch valve 13a squeezed the first tube 11 at a position about 10 mm from the joint 12b. By this structure, the expansion of the 1st tube 11 by the press force at the time of the press operation of the liquid agent by the plunger 7 is suppressed as much as possible, and the absorption of the press force by the 1st tube 11 is suppressed. Therefore, the dripping amount of the liquid agent by the press operation of the plunger 7 can be stabilized.

(5) When the liquid supply time from the barrel 1 to the syringe 3 is longer than the ejection time for dropping the liquid from the nozzle 6, the first pinch valve 13a is a normal open type, and the second pinch The valve 13b is a normal closed type. In addition, when the liquid supply time from the barrel 1 to the syringe 3 is shorter than the discharge time which dripping liquid from the nozzle 6, the 1st pinch valve 13a is set as a normal closed type, and the 2nd pinch valve Let 13b be a normal open type. By setting it as such a structure, the electricity supply time to the 1st and 2nd pinch valves 13a and 13b can be shortened, heat_generation | fever of both pinch valves 13a and 13b can be suppressed, and power consumption can be reduced.

(2nd embodiment)

3 and 4 show a second embodiment. In this embodiment, the supply valve and the front end valve of the first embodiment, that is, the first and second pinch valves 13a and 13b are configured by one common pinch valve 19.

That is, the joint part 12b side of the 1st tube 11 is attached to the 2nd tube 17 side by side. And as shown in FIG. 4, the 1st tube 11 is inserted between the clamping members 16a and 16b of the pinch valve 19, and the 2nd tube 17 is clamped between the clamping members 16b and 16c. Shovel. The pinch valve 19 enables the clamping member 16b to be driven to the intermediate position between the clamping members 16a and 16b, the clamping member 16a side, and the clamping member 16c side, respectively.

In the dispenser apparatus thus formed, in addition to the effect obtained in the first embodiment, the following effect can be obtained.

(1) Since the supply valve and the front end valve can be constituted by one pinch valve 19, the number of parts and the cost of parts can be reduced.

Each said embodiment may be implemented with the following forms.

The first and second tubes 11 and 17 may be materials other than the above as long as they are flexible and have corrosion resistance to the liquid.

According to the present invention, it is possible to provide a dispenser device having a simple structure and capable of suppressing the generation of bubbles.

1 is a configuration diagram showing a first embodiment.

2 is an explanatory diagram showing a pinch valve of a first embodiment;

3 is a configuration diagram showing a second embodiment;

4 is an explanatory diagram showing a pinch valve of a second embodiment;

5 is a configuration diagram showing a conventional example.

<Explanation of symbols for the main parts of the drawings>

1: barrel

3: syringe

6: nozzle

7: plunger

11: first tube

13a: first pinch valve

13b: second pinch valve

17: second tube

Claims (7)

A barrel for storing the liquid, A supply valve for controlling the supply of the liquid agent from the barrel to the syringe; A tip valve for controlling the supply of the liquid agent from the syringe to the nozzle, In the dispenser device provided with the plunger which presses the liquid agent in the said syringe toward the said nozzle at the time of the opening of the said front-end valve, And the supply valve and the front end valve are configured as pinch valves that open and close the fluid flow path by narrowing or releasing the tube having flexibility. 2. The tube of claim 1, wherein the tube comprises a first tube connecting the barrel and the syringe, and a second tube connecting the syringe and the nozzle, wherein the pinch valve narrows the first tube. A dispenser device comprising one pinch valve and a second pinch valve for narrowing the second tube. The dispenser device according to claim 2, wherein the first and second pinch valves enable the first and second tubes to be narrowed in the vicinity of the syringe. 4. The dispenser device of claim 3, wherein the first and second pinch valves enable the first and second tubes to be narrowed at a position within 10 mm from the syringe. The dispenser device of claim 2, wherein the first and second tubes are made of Teflon-based rubber or silicone rubber. The first and second pinch valves of claim 2, wherein the first and second pinch valves are configured to be normally open when the liquid supply time from the barrel to the syringe is longer than the liquid supply time from the syringe to the nozzle. At the same time, the second pinch valve is a normal closed type, and when the liquid supply time from the barrel to the syringe is shorter than the supply time of the liquid from the syringe to the nozzle, the second pinch valve is normally closed and the second A dispenser device comprising a pinch valve as a normal open type. The dispenser device of claim 2, wherein the first and second pinch valves are connected together to drive the first and second pinch valves in a common actuator unit.