JPS5963523A - Weighing apparatus of fixed quantity - Google Patents

Abstract

PURPOSE:To push out a fixed quantity two times in total, that is, each one time for every forward and backward motions of the piston by forming a control device having two three-way switching valves by a relay, a control pulse oscillator and a T bistable element to operate a piston type weighing machine. CONSTITUTION:The first three-way switching valve 7 is AB connection and the second three-way switching valve 8 is AC connection. An adhesive 2 pushed out from a storage tank 1 is flowed into a piston room 9-1a passing through successively fluid transportation pipes 10, 11, the first piping connecting part 9-3a and a circulation hole 9-3b. A piston 9-2 is moved by pressing to the right and the adhesive 2 in the piston room 9-1a is pushed out from a circulation hole 9-4b and is sent to a nozzle 21 through a fluid transportation pipe 14, the second three-way switching valve 8 and a fluid transportation pipe 15. Thereafter, a T bistable element 19 is turned reversely in case when one control pulse is oscillated by a control pulse oscillator 18 and the switching valve 7 is changed over to the AC connection and the switching valve 8 is changed over to the AB connection by a relay 16. Further, the piston 9-2 is moved by pressing to the left.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a quantitative measuring device, and more particularly to a quantitative measuring device capable of delivering minute amounts of various fluids.

Today, a wide variety of adhesives are used in automatic production lines for various industrial products.

Therefore, it is necessary to accurately supply and apply the appropriate amount of these adhesives to the surfaces to be adhered to the parts, but there is no inexpensive, high-performance automatic quantitative measuring device that can be used for this purpose. do not have.

This situation also applies to equipment that performs injection, addition, packaging, and other operations of various additives, dyes, drugs, seasonings, etc. 5! There are a wide variety of fields in which devices capable of accurately measuring quantities of fluid can be utilized.

Quantitative measuring devices are widely used, for example, in pan cage devices for various plastic materials, high-viscosity or low-viscosity fluid products, and other fields. The cost is high, the accuracy is insufficient, there are many restrictions on the properties of the fluid to be measured, there is a risk of contamination or deterioration of the fluid, there is a risk of air bubbles being mixed in, and leakage of the fluid is unavoidable. There were many problems.

The present invention has been made from the viewpoint of upward slope, and the first object of the present invention is to quantitatively measure small amounts of various fluids with high precision and high efficiency using a relatively simple device. The object of the present invention is to provide a new and practical quantitative measuring device that can perform the following tasks.

Another object of the present invention is that the present invention is a closed type, can be used with any type of fluid, does not deteriorate or leak the fluid, and is safe and free from the risk of contamination with air bubbles, etc. The object of the present invention is to provide a quantitative measuring device that is easy to maintain.

Note that in this specification, fluids include not only ordinary gases and liquids but also various adhesives and other polymeric substances, such as high viscosity or plastic substances such as molasses, miso, 71 Naise, and toothpaste.

Hereinafter, details of the configuration of the present invention will be explained with reference to the drawings.

The drawing is an explanatory view showing one embodiment of the quantitative measuring device according to the present invention, and in the drawing, 1 is a storage tank containing adhesive 2, 3 is a high-pressure air tank, 4 is a pressure control valve 4, and 5 is an airline line. , 6 is a temperature control device, 7 is a first three-way switching valve, 8 is a second three-way switching valve, 9 is a piston type meter, 10.11
．． 12.13.14 and 15 are fluid transport pipes, 16 is a relay, 17 is a power supply, 18 is a control pulse Ra device, 19 is a T-bistable element, 21 is a nozzle, 22 is a conveyor that transports mechanical parts 23 and 23, 24. Adhesive 2 extruded to 24 digits f.

In this embodiment, the fluid to be layered is an adhesive 2 contained in a storage tank 1, which is pressurized by a fluid supply device consisting of a storage tank 1, a high-pressure air tank 3, a pressure regulating valve 4, and an airline 5. , is supplied.

The piston type measuring device 9 consists of a cylinder side wall member 9-1, a piston 9-2, a cylinder cover body 9-3, and 9=4.0 rings 9-5 and 9-6.

Cylinder? I! IJi? Cylinder lids 9-3 and 9-4 are attached to both ends of the member 9-1 to form a cylinder, and a piston 9-2 is slidably inserted into a piston chamber 9-1a inside the cylinder. By screw 1 type 4
Form the first curtain 9.

1st and 2nd piping connection parts 9-' 3a and 9-4a
The piston chamber 9-1 is connected to the piston chamber 9-1 by the communication holes 9-3b and 9-4b.
? The piston 9-2 is located between the first piping connection part 9-3a and the second piping connection part 9-4a, and the cylinder lid body is closed by the hydraulic pressure acting on the end face of the piston 9-2. 9-
3 and 9-4, the inner end surfaces 9-3c and 9-4c are slid back and forth between them.

The adhesive 2 is pressurized inside the storage tank 1 by high pressure air sent through the pressure control valve 4 and the airline 5, and is sent out from the storage tank 1 through the fluid transport pipe 1o.
After being kept at a constant temperature by the temperature control device 6, it is supplied to the primary side boat of the first three-way switching valve 7.

One secondary side boat B of the first three-way switching valve 7 is connected to the first piping connection part 9-3a together with one primary side boat B of the second three-way switching valve 8. The other secondary port C of the three-way switching valve 1 is connected to the second piping connection 9-4 together with the other primary port c of the second three-way switching valve 8.
a, and the secondary boat A of the second three-way switching valve 8 is connected to the nozzle 21.

In the illustrated state, the first three-way switching valve 7 is connected AB and the second three-way switching valve 8 is connected AC. The adhesive 2 extruded from the storage tank 1 passes sequentially through the fluid transport pipes 1o, 11, the first pipe connection 9-3a, and the circulation hole 9-3b, and flows into the screw tube 9-1a. Therefore, the piston 9-2 is pressed and moved to the right in the figure, and the adhesive 2 in the piston chamber 9-1a is transferred to the flow hole 9-2.
4b, fluid transport pipe 14, primary boat of second three-way switching valve 8) C1 secondary boat A and fluid transport pipe 15
from there to a desired position on a machine part 23 transported by a conveyor 22.

When the piston 9-2 is moved to the right end of the movement, the right end surface of the piston 9-2 is brought into contact with the flow hole 9-4.
Since it comes into contact with the opening of b and closes the flow hole 9-4b,
Extrusion of adhesive 2 is stopped.

After that, when the control pulse oscillator 18 oscillates one control pulse, the 1゛ bistable element 19 is reversed.
The coil 16-1 of the relay 16 is excited, and the conductor piece 16-
2 is switched to the B contact side, so the first three-way switching valve 7
is switched to the AC connection, the second three-way switching valve 8 is switched to the AB connection, and the adhesive 2 in the storage tank 1 passes from the fluid transport pipe 12 through the second piping connection 9-4a and the circulation hole 9-4b. flows into the piston chamber 9-1a, suppressing and moving the piston 9-2 to the left in the figure.

In this case, the adhesive 2 in the piston chamber 9-1a is pushed out through the flow hole 9-3b, and the fluid transport pipe 13, the primary boat B of the second three-way switching valve 8, and the secondary boat A) and is sent to the nozzle 21 via the fluid transport pipe 15.

Thereafter, when the piston 9-2 moves to the left end of the movement, that is, to the position where the left end surface of the piston 9-2 abuts the opening of the communication hole 9-3b, the right end surface of the piston 9-2 contacts the opening of the communication hole 9-3b. 3b is closed, the extrusion of the adhesive 2 is stopped again.

Thereafter, each time the control pulse oscillator 18 oscillates a control pulse, the T-pistable element 19 is reversed, the connection between the relay 16 and the first and second three-way switching valves 7 and 8c is switched, and the piston 9- The direction of movement of 2 is reversed - tightened.

At that time, the piston 9-2 moves from the end point of one movement to the end point of the other force, and each time, the screw)>'9
A volume of adhesive 2 obtained by multiplying the cross-sectional area of -2 by the moving distance is extruded from the nozzle 21.

In other words, in this embodiment, Ki! Electric appliance 16, controlled Hals oscillation! 1B and human T pie stable elm, 7 nt 1
9 forms a control device for the three-way switching valves 7 and 8, which controls the three-way switching valves and operates the piston type meter 9.

The piston-type measuring device 9 adopted in the present invention has extremely high volumetric efficiency, and the volume of the adhesive 2 extruded each time can be adjusted to an arbitrary level with convex accuracy by appropriately determining the cross-sectional area and moving distance of the piston. It can be set to a value.

Furthermore, in the device of the present invention, when the piston 9-2 makes one reciprocation,
Since quantitative extrusion is carried out twice in each of the forward and return passes, the device of the present invention can perform quantitative extrusion with an extremely high convexity ratio.

In this embodiment, the fluid that is required for the needle amount is sealed and pressurized within the device, without using a problematic pump, etc., and without changing the quality of the fluid or mixing air bubbles.
It is possible to quantitatively measure a desired fluid efficiently, accurately and reliably.

Note that the configuration of the present invention is not limited to the slanted embodiment, and for example, the switching valve used is not limited to the spring offset electromagnetic type three-boat two-position switching valve as shown in the figure. It can be replaced with any other valve that has an equivalent function, for example, it can be mechanically operated, it can be used in combination with Nivot valves, it is also possible to use four-boat valves, etc. The device for controlling the valve is not limited to the relay 16, control pulse oscillator 18, T-bistable element 19, etc., and may also include the shape and configuration of the piston meter, fluid supply device, etc. However, the design can be freely modified using widely known components within the scope of the purpose of the present invention, and the present invention encompasses all of them.

[Brief explanation of the drawing]

The drawing is an explanatory diagram showing an embodiment of the 11-stage device according to the present invention. 1 --- Storage tank 2.24 --- Adhesive 3 --- -- High-pressure air tank 4 --- Pressure C1 control valve 5 --- Eli line 6 --- --- Temperature adjustment device 7-----First three-way switching valve 8--One second three-way switching valve 9------- Piston type measuring instrument 9-1-
-------1~----------Cylinder side wall member 9
−2−・−−−−−−−−−−−−−−− Piston 9
-3.9-4-1---Cylinder lid body 9-3 a --
----------・-------1st piping connection part 9-3
b, 9-4b-Flow hole 9-4a--1----------1--Second piping connection part 10.11.12.13.14.15--
- Fluid transport pipe 16 ---- - - - - - - Relay 17 - - - Power supply 1B - - Control pulse oscillator 19 - −
−−−−・−T bistable element 20− ・−
−111−−−・−Counter 21− ・−1−−−−−
---Nozzle 22----------Conveyor 2'3-------One machine parts patent applicant: Agent for Oval Equipment Industry Co., Ltd. (75
24) Mogami Shotabe

Claims (1)

[Scope of Claims] A quantitative δ1 quantity device characterized by comprising the components described in (, 1) to (d+) below. (b) A piston-type device for supplying fluid at variable needle rates, comprising a cylinder provided with first and second piping connections communicating with each other, and a piston slidably fitted in the piston chamber. (C) - One baud on the downstream side) A is connected to a device for supplying fluid for the needle amount, and two bauds on the secondary side) B and C are respectively the first and second bauds of the piston meter. A first three-way valve connected to a second pipe connection. fdl - the two boats B and C on the primary side lead respectively to the first and second piping connections of the piston meter;
A second three-way valve with a second boat on the secondary side communicating with the fluid delivery pipe. fdl A valve control device that controls opening and closing of the first and second three-way switching valves and operates the piston-type meter.