JPH0542993A - Filling valve for filling machine for wide-mouthed container - Google Patents

Abstract

PURPOSE:To effect a high-speed operation of the above filling machine by a method wherein an elevating member having at a lower part thereof a seal member for sealing a mouth of a container is fitted to the outer periphery of a valve housing in a vertically movable manner and the filling of the container is performed by opening and closing a valve without causing a container table to move up and down. CONSTITUTION:When an underlying cam (not illustrated) first pushes up a cam follower 24 to move up an exhaust tube 12 at the time of filling work, a valve body 12c at the lower end of the exhaust tube 12 pushes up a valve seat 8b of a liquid feed tube 8. Further, an elevating member 30 is pushed up by a valve seat member 8c having the valve seat 8b. In this state, a container 32 such as a tube is guided underneath a filling valve 2. Then, the cam follower 24 is disengaged from the underlying cam and, when a force which elevates the exhaust tube 12 is released, the liquid feed tube 8 is pushed down by the action of a spring 10; the exhaust tube 12 is also pushed down by the valved seat 8b; and a liquid valve 14 enters the container. Thus, the container is filled with liquid by opening the liquid valve 14, and air in the container is discharged through an exhaust passageway 36.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling valve provided in a filling machine for filling a wide-mouth container such as a can or a wide-mouth bottle.

[0002]

2. Description of the Related Art In a filling machine for wide-mouthed containers such as cans and wide-mouthed bottles,
Normally, the valve is opened by raising the table on which the container is placed and pushing up the valve.

[0003]

However, the conventional structure for raising and lowering the container base as described above has a problem that it is difficult to increase the speed.

The present invention has been made to solve the above problems, and provides a filling valve of a filling machine for a wide-mouthed container, which can open and close the valve without moving the container base up and down to perform filling. is there.

[0005]

A filling valve of a filling machine for a wide-mouthed container according to the present invention comprises a valve housing fixed to the bottom surface of a filling liquid tank, and a liquid injection member vertically movable in the valve housing. A pipe, a first spring for constantly urging the liquid injection pipe downward with respect to the valve housing, an exhaust pipe fitted in the liquid injection pipe with a gap, and capable of moving up and down with respect to the liquid injection pipe, A second spring mounted elastically between the liquid pipe and the exhaust pipe, an elevating member fitted to the outer periphery of the valve housing so as to be able to move up and down, and a seal member for sealing the mouth of the container on the lower surface, and the elevating member. A third spring that constantly urges the member downward with respect to the valve housing, a liquid valve that opens by relative lowering of the exhaust pipe with respect to the liquid injection pipe, an injection pipe, an exhaust pipe, and an elevating member integrally. Exhaust means to raise and exhaust And a lowering means for lowering the.

[0006]

In the filling valve of the filling machine for a wide-mouthed container according to the present invention, when the injecting pipe, the exhaust pipe and the elevating member are raised by the elevating means to introduce the container below the elevating member and then the elevating means is released, the liquid is discharged. While the valve remains closed, it descends to enter the container and the sealing member of the lifting member seals the mouth of the container. Subsequently, when the exhaust pipe is lowered by the lowering means, the liquid valve is opened and filling is performed.

[0007]

The present invention will be described below with reference to the illustrated embodiments.
FIG. 1 is a vertical cross-sectional view of a filling valve according to an embodiment of the present invention. The filling valve 2 is provided near the outer circumference of a filling liquid tank 4 and performs filling while rotating together with the filling liquid tank 4.

A valve housing 6 is fixed through a hole 4b formed in a bottom surface 4a of the filling liquid tank 4.
The valve housing 6 has a large diameter upper portion 6a and a small diameter lower portion 6b. The liquid injection pipe 8 is slidably fitted to the inner circumference of the lower portion 6b. The injection pipe 8 is
A lower portion 6b of the valve housing 6 is vertically penetrated, and a ring member 8a is attached to an upward protruding portion so as to slide on the inner surface of the upper portion 6a of the valve housing 6. Further, a valve seat member 8c having a diameter larger than that of the lower portion 6b of the valve housing 6 and having a valve seat 8b on the lower end surface is provided at the protruding portion from below, and the liquid injection pipe 8 is provided.
Is movable up and down with respect to the valve housing 6 between the ring member 8a and the valve seat member 8c. The liquid injection pipe 8 is constantly urged downward by a spring 10 mounted between the upper member 6a of the valve housing 6 and the ring member 8a, and the ring member 8a contacts the upper end surface of the lower member 6b to stop. There is.

An exhaust pipe 12 is fitted in the liquid injection pipe 8 with a gap. The exhaust pipe 12 is in sliding contact with the inner surface of the ring member 8a, and the guide ring 12a fixed to the outer peripheral surface above the ring member 8a has a valve housing 6a.
Is in sliding contact with the inner surface of the upper member 6a and moves up and down while being guided by the ring member 8a and the upper member 6a. Exhaust pipe 1
A valve body 12 having a seal member 12b fitted on the lower end surface of
c is provided, and constitutes a liquid valve 14 together with the valve seat 8c of the liquid injection pipe 8. A spring 1 is provided between the ring member 8a of the liquid injection pipe 8 and the guide ring 12a of the exhaust pipe 12.
6 is disposed, and the exhaust pipe 12 is constantly urged so as to be relatively raised with respect to the liquid injection pipe 8 so that the valve body 12c is seated on the valve seat 8b and the liquid valve 14 is closed.

The upper portion of the exhaust pipe 12 penetrates the upper surface 4b of the filling liquid tank 4 and projects upward, and the elevating mechanism 18 for the exhaust pipe 12 is provided on the protruding portion. Lifting mechanism 18
Is a block 20 fixed to the upper end of the exhaust pipe 12, a guide rod 22 for guiding the up and down movement of the block 20,
And a cam follower 24 attached to the block 20. The cam follower 24 is a lower cam (raising means).
26 (see FIG. 2) or an upper cam (lowering means) 28 (see FIG. 4) is engaged to move up and down.

An elevating member 30 is slidably fitted on the outer periphery of the lower member 6a of the valve housing 6. The lift member 30 is kept liquid-tight with the valve housing 6 by the O-ring 30a, and is kept liquid-tight with the valve seat member 8c by the O-ring 8d of the valve seat member 8c. An annular seal member 30b is attached to the lower end surface of the elevating member 30, and the container 32 is attached by the seal member 30b.
Seal the mouth (see FIG. 2). A spring 31 is elastically mounted between the upper end surface of the elevating member 30 and the valve housing 6 to constantly urge the elevating member 30 downward, and the step portion 30c formed on the inner surface of the elevating member 30 is the above-mentioned. It has stopped by hitting the upper surface of the valve seat member 8c.

A liquid passage 34 is formed between the inner peripheral surface of the liquid injection pipe 8 and the outer peripheral surface of the exhaust pipe 12, and the valve housing 6
The liquid in the filling liquid tank 4 flows into the liquid passage 34 through the notch 6c and the passage hole 8e of the ring member 8a, and when the liquid valve 14 is opened, the container 32 is filled. In addition, the exhaust pipe 12 has an exhaust passage 36, and during filling, the air in the container 32 passes through the exhaust passage 36 and passes through the hole 12d formed in the upper portion of the exhaust pipe 12 to the upper portion of the filling liquid tank 4. Exhausted to.

Next, the operation of the filling valve 2 will be described. First, the lower cam 26 pushes up the cam follower 24 to raise the exhaust pipe 12 (see FIG. 2). The valve body 12c provided at the lower end of the exhaust pipe 12 pushes up the valve seat 8b of the liquid supply pipe 8, and the valve seat member 8c having the valve seat 8b pushes up the lifting member 30. The pipe 8 and the elevating / lowering member 30 are integrally raised. Fill valve 2 in this state
A container 32 such as a can is introduced below the.

When the cam follower 24 and the lower cam 26 are disengaged (see FIG. 3) and the force for raising the exhaust pipe 12 is released, the spring 10 pushes down the liquid supply pipe 8 to the lower end. The exhaust pipe 12 is also pushed down by the valve seat 8b, and the liquid valve 14 enters the container 32. The height of the filling liquid tank 4 can be changed, and the clearance of the liquid valve 14 can be changed depending on the height. The elevating member 30 is pushed down by the spring 31, and the sealing member 30b is brought into close contact with the mouth of the container 32 and seals.

Subsequently, the cam follower 24 is moved to the upper cam 28.
And the exhaust pipe 12 is lowered (see FIG. 4). The liquid supply pipe 8 has already reached the lower end, and only the exhaust pipe 12 descends to open the liquid valve 14 for filling. The filling liquid in the filling liquid tank 4 flows into the container 32 through the liquid passage 34 and the liquid valve 14, and the air in the container 32 is exhausted from the exhaust passage 3
It is discharged through 6. The liquid level in the container 32 is the valve body 12c
When the temperature reaches, the liquid in the container 32 rises in the exhaust passage 36 and the filling is completed.

After that, the cam follower 24 and the upper cam 28
(See FIG. 5), the exhaust pipe 12 is pushed up by the spring 16, the valve body 12c is seated on the valve seat 8b, and the liquid valve 14 is closed. In this state, the liquid surface 12e in the exhaust pipe 12 coincides with the liquid surface 4c in the filling liquid tank 4.

Finally, the cam follower 24 is raised again by the lower cam 26 (see FIG. 6). As the exhaust pipe 12 rises, the liquid supply pipe 8 and the lifting member 30 also rise. At this time, the liquid in the exhaust pipe 12 falls into the container 32. After the filled container 32 is discharged, the cam follower 24
When the lower cam 26 is disengaged from the lower cam 26 (see FIG. 7), the liquid supply pipe 8, the exhaust pipe 12 and the elevating member 30 are pushed down to their lowest positions. Then, returning to the state of FIG. 2, the next container 32 is filled. As described above, in the filling valve 2 according to the present embodiment, the valve is opened and closed for filling without moving the container 32 up and down, so that high-speed operation can be performed. Further, the empty size (the remaining space in the upper part of the container) can be automatically set by moving the filling liquid tank 4 up and down.

[0018]

As described above, according to the present invention, a high speed filling machine for wide-mouth containers can be achieved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a filling valve according to an embodiment of the present invention.

FIG. 2 is a diagram showing one of operating states of the filling valve.

FIG. 3 is a diagram showing one of operating states of the filling valve.

FIG. 4 is a diagram showing one of operating states of the filling valve.

FIG. 5 is a diagram showing one of operating states of the filling valve.

FIG. 6 is a diagram showing one of operating states of the filling valve.

FIG. 7 is a diagram showing one of operating states of the filling valve.

[Explanation of symbols]

 4 Filling Liquid Tank 4a Bottom of Filling Liquid Tank 6 Valve Housing 8 Filling Pipe 10 First Spring 12 Exhaust Pipe 14 Liquid Valve 16 Second Spring 26 Ascending Means 28 Lowering Means 30 Lifting Member 30b Sealing Member 31 Third Spring

Claims (1)

[Claims] 1. A valve housing fixed to the bottom surface of a filling liquid tank, a liquid injection pipe fitted in the valve housing so as to be movable up and down, and a liquid injection pipe is constantly urged downward with respect to the valve housing. A first spring, an exhaust pipe fitted in the liquid injection pipe with a gap, and capable of moving up and down with respect to the liquid injection pipe, and a second spring mounted between the liquid injection pipe and the exhaust pipe. , Is fitted to the outer periphery of the valve housing so that it can move up and down,
By an elevating member having a sealing member for sealing the mouth of the container on the lower surface, a third spring that constantly urges the elevating member downward with respect to the valve housing, and a relative lowering of the exhaust pipe with respect to the liquid injection pipe. A filling valve for a filling machine for a wide-mouthed container, comprising: a liquid valve for opening, a raising means for integrally raising a liquid injection pipe, an exhaust pipe and an elevating member, and a lowering means for lowering the exhaust pipe.