JP2773260B2 - Automatic size adjustment device of gravity type filling device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravity filling device for filling a container with a predetermined amount of a filling liquid, and more particularly, to the height of a residual space formed in an upper part of a container. The present invention relates to an automatic size adjusting device for a gravity-type filling device capable of adjusting the size, that is, the size.

[Background Art] Generally, a gravity-type filling device includes a filling liquid tank that stores a filling liquid, a valve housing provided in the filling liquid tank, a filling liquid passage formed in the valve housing, and a filling liquid passage formed in the filling liquid passage. An exhaust pipe for introducing atmospheric pressure into the space above the filling liquid tank and allowing air in the container to escape to the space above the exhaust pipe, and provided in the valve housing so as to be able to move up and down, and provided in the exhaust pipe at a lowered position. A valve member seated on the valve seat to close the filling liquid passage, a packing provided on the valve member to seal the mouth of the container, and a container raised to bring the mouth of the container into close contact with the packing. In addition, a container elevating mechanism for raising the valve member to open the filling liquid passage is provided (Japanese Patent Application Laid-Open No. Sho 53-17487).

In the gravity-type filling device having such a configuration, the container is lifted by the container lifting / lowering mechanism to bring the mouth of the container into close contact with the packing, and the container is further raised to raise the valve member. The filling liquid passage can be opened by separating from the valve seat provided on the exhaust pipe,
Thereby, the filling liquid can be filled in the container.

At this time, the exhaust pipe protrudes into the container by a predetermined amount, and when the filling liquid is filled to the lower end of the exhaust pipe, the filling liquid rises in the exhaust pipe, so Thus, a remaining space corresponding to the height of the mouth and the lower end of the exhaust pipe, that is, a remaining space corresponding to the amount of protrusion of the exhaust pipe into the container is formed.

To change the height of the remaining space, that is, the empty size,
What is necessary is just to change the amount of protrusion of the exhaust pipe into the container,
The above-mentioned publication discloses such an automatic sizing device.

The automatic sizing device disclosed in the above publication is provided with a packing capable of moving up and down with respect to the valve member, and moving the packing up and down with respect to the valve member at the time of sizing,
After the adjustment, the packing can be fixed to the valve member. A worm gear is used as a mechanism having such a function, in which the valve member and the packing are linked via a worm gear, and the worm on the driving side is linked with a motor.

According to this configuration, the packing can be displaced up and down with respect to the valve member by rotating the worm in the forward and reverse directions by the motor, and the packing can be fixed to the valve member by stopping the rotation of the worm. Can be. If the packing is raised and lowered with respect to the valve member, the amount of protrusion of the exhaust pipe into the container when the container is raised to the rising end by the container lifting mechanism can be changed. It can be carried out.

"Problems to be Solved by the Invention" However, the above-mentioned conventional automatic sizing device,
Since the valve member and the packing are linked via a worm gear and the worm is linked with a motor, when the filling device has a large number of filling heads, the valve member and the packing are provided for each filling head. Need to be linked with each other via a worm gear and with each worm and motor, so that the configuration becomes complicated and maintenance and inspection become complicated.

"Means for solving the problem" In view of such circumstances, the present invention relates to a filling liquid tank for storing a filling liquid, a valve housing provided in the filling liquid tank, and a filling liquid passage formed in the valve housing. An exhaust pipe that is provided in the filling liquid passage so as to be able to move up and down, and that introduces atmospheric pressure into the space above the filling liquid tank and allows air in the container to escape to the space above the exhaust pipe; A liquid valve for opening and closing the filling liquid passage, valve opening and closing means for raising and lowering the exhaust pipe to open and close the liquid valve, a raising and lowering member provided on the valve housing so as to be able to move up and down, and being provided on the raising and lowering member. Packing for sealing the mouth of the container, a container elevating mechanism for raising the container and bringing the mouth of the container into close contact with the packing, and further for a container of the same height. What is to provide an automatic size adjustment device of a gravity type filling device, comprising: a tank elevating mechanism which raises and lowers the filling liquid tank and adjusts the height of a remaining space in the container according to the height position of the filling liquid tank. It is.

[Operation] According to the above configuration, the container can be lifted by the container lifting / lowering mechanism, and the mouth of the container can be sealed with packing. Thereafter, the liquid valve can be opened by the valve opening / closing means to start filling. it can. When the filling liquid is filled in the container, the air in the container escapes to the space above the filling liquid tank via the exhaust pipe with the filling liquid, and further, the lower end of the exhaust pipe When the filling liquid is filled up to the portion, the filling liquid rises in the exhaust pipe, and when the liquid level coincides with the liquid level in the filling liquid tank, the flow of the filling liquid into the container is stopped.

At this time, a residual space is formed in the container in accordance with the amount of the exhaust pipe projecting into the container. Therefore, if the height of the filling liquid tank is adjusted in advance by the tank elevating mechanism, the exhaust pipe can be used as a reference. It is possible to change the amount of rise of the container, and therefore the amount of protrusion of the exhaust pipe into the container, thereby adjusting the empty size.

When the flow of the filling liquid into the container is stopped, the liquid valve is closed by the valve opening / closing means, and then the container is lowered to separate the opening from the packing, so that the filling liquid flowing into the exhaust pipe can be obtained. Can be dropped into the container to complete the filling operation.

As described above, in the present invention, the empty size can be adjusted by raising and lowering the filling liquid tank. Therefore, even when the filling liquid tank has a large number of filling heads, it is necessary to adjust the empty size all at once. Can be. And since the tank elevating mechanism for elevating and lowering the filling liquid tank is configured separately from the configuration of each filling head, compared with the case where the automatic size adjustment device is linked to each of the filling heads as in the conventional case, the configuration is And simplification of maintenance and inspection can be achieved.

"Example" Hereinafter, the present invention will be described with reference to the illustrated embodiment. The gravity type filling apparatus is provided with a rotating body 1 driven by a motor (not shown) and a rotating body 1 above the rotating body 1 so as to rotate integrally therewith. The apparatus includes a filling liquid tank 2 and a plurality of filling heads 3 (only one filling head 3 is shown in the drawing) attached to the outer peripheral portion of the bottom surface of the filling liquid tank 2 at regular intervals.

Each of the filling heads 3 includes a cylindrical valve housing 4 fixed to the filling liquid tank 2, and is moved up and down on a shaft of each valve housing 4 via a bracket 5 on a bottom wall of the filling liquid tank 2. Exhaust pipe 6 provided freely
Are loosely fitted through. And the valve housing 4
The gap between the inner peripheral surface of the exhaust pipe 6 and the outer peripheral surface of the exhaust pipe 6 is defined as a filling liquid passage 7, and the inside of the exhaust pipe 6 is defined as an exhaust passage 8.

A lower end of the exhaust pipe 6 is formed as a valve body 9, and a valve seat 10 is formed on a lower end surface of the valve housing 4, and a liquid valve for opening and closing the filling liquid passage 7 by the valve body 9 and the valve seat 10. Make up 11. The exhaust pipe 6 is urged upward by a spring 12 elastically mounted between the exhaust pipe 6 and the bracket 5. Usually, a valve body 9 provided in the exhaust pipe 6 is provided in a valve seat 4 provided in the valve housing 4. The seat 10 is closed to close the filling liquid passage 7.

The liquid valve 11 is opened and closed by valve opening and closing means 13 for raising and lowering the exhaust pipe 6. The valve opening and closing means 13 includes a rotating shaft 14 supported on a side wall of the filling liquid tank 2, An elevating cam 15 attached to the right end of the rotating shaft 14 and a drive cam lever 16 attached to the left end of the rotating shaft 14 are further provided. The elevating cam 15 engages with the projection 6a formed at the upper end of the exhaust pipe 6, pushes down the projection 6a by rotating in one direction to lower the exhaust pipe 6, and releases the pushing down by rotating in the opposite direction. The spring 12 allows the exhaust pipe 6 to rise.

A cam member (not shown) is provided at two positions close to the side wall of the filling liquid tank 2 to abut on a driving cam lever 16 which is moved with the rotation of the filling liquid tank 2. When the abutment with one cam member, the drive cam lever 16 is rotated in one direction to rotate the elevating cam 15 in one direction, and when the drive cam lever 16 abuts on the other cam member, By rotating the driving cam lever 16 in the reverse direction, the elevating cam 15 can be rotated in the reverse direction.

Next, a cylindrical elevating member 18 is provided on the outer periphery of the valve housing 4 so as to be able to elevate and lower while maintaining a liquid-tight state by a seal member 19, and the elevating member 18 seals the opening of the container 20.
21 is installed. The valve housing 4 is provided with a stopper 22 for preventing the elevating member 18 from dropping downward, and a spring 23 is mounted between the valve housing 4 and the elevating member 18. Therefore, the elevating member 18 and the valve housing 4 are normally held at the descending end position where the elevating member 18 comes into contact with the stopper 22 of the valve housing 4 by the elastic resilience of the spring 23.

The container 20 is connected to a lifting table 29 provided directly below each filling head 3 via a supply-side star wheel (not shown).
Each of the elevating tables 29 is moved up and down by a cam mechanism 30 as a container elevating mechanism.

Further, the filling liquid tank 2 rotates integrally with the rotating body 1 below, but is moved up and down with respect to the rotating body 1 by a tank elevating mechanism 31 provided on the rotating body 1. The tank lifting / lowering mechanism 31 includes a screw shaft 32 rotatably supported at the rotation center position of the rotating body 1 and a motor 33 for rotating the screw shaft 32 in forward and reverse directions. By screwing the upper end to the filling liquid tank 2, the screw shaft
The filling liquid tank 2 can be moved up and down with the rotation of the 32 in the forward and reverse directions.

In the above configuration, when the container 20 is lifted by the cam mechanism 30, the opening of the container 20 is tightly sealed to the packing 21, and the packing 21 and the elevating member 18
The lift is stopped against the lift 23, and when the required lift end position is reached, the lift is stopped. At this time, the lower end of the exhaust pipe 6 projects into the container 20 by a predetermined amount.

When the container 20 is at the rising end, the driving cam lever 16 abuts on a cam member (not shown) and is rotated in one direction.
Pushes down the projection 6a formed at the upper end of the exhaust pipe 6 to lower the exhaust pipe 6. Thereby, the liquid valve 11 is opened and the filling of the filling liquid into the container 20 is started.

With the filling of the filling liquid into the container 20, the air inside the container 20 escapes from the exhaust passage 8 to the upper space of the filling liquid tank 2, and the level of the filling liquid in the container 20 When the filling liquid reaches the lower end, the filling liquid flows into the exhaust passage 8, rises to the liquid level of the filling liquid in the filling liquid tank 2, and the inflow of the filling liquid into the container 20 ends.

Therefore, if the filling liquid tank 2 is previously set at a predetermined height position by the tank lifting / lowering mechanism 31, the amount of protrusion of the exhaust pipe 6 into the container 20 can be changed in accordance with the height position, whereby The empty size in the container can be adjusted.

Thereafter, when the driving cam lever 16 abuts on a cam member (not shown) and is rotated in the opposite direction, and the elevating cam 15 is accordingly rotated in the opposite direction, the elevating cam 15 is formed at the upper end of the exhaust pipe 6. Since the depression of the projection 6a is released, the exhaust pipe 6 is raised by the spring 12, and the liquid valve 11 is closed.

In this state, the container 20 is lowered by the cam mechanism 30, and the elevating descent 18 descending with this is stopped by the stopper 22.
When the descent is stopped by contacting the
It comes to be separated from the packing 21 provided in 18. As a result, the filling liquid flowing into the exhaust passage 8 falls into the container 20, and the container 20 is then carried out of the lifting table 29 by a discharge-side star wheel (not shown).

[Effects of the Invention] As described above, in the present invention, the size of the filling liquid tank can be adjusted by raising and lowering the filling liquid tank. Adjusting the size can be performed. And since the tank elevating mechanism for elevating and lowering the filling liquid tank is configured separately from the configuration of each filling head, compared with the case where the automatic size adjustment device is linked to each of the filling heads as in the conventional case, the configuration is And the maintenance and inspection can be simplified.

[Brief description of the drawings]

 FIG. 1 is a schematic configuration diagram showing one embodiment of the present invention. 2 ... Filling liquid tank, 3 ... Filling head 4 ... Valve housing, 6 ... Exhaust pipe 7 ... Filling liquid passage, 8 ... Exhaust passage 11 ... Liquid valve, 13 ... Valve opening / closing means 18 ... Lifting member, 20 Container 21 Packing 29 Lifting table 30 Cam mechanism (Container lifting mechanism) 31 Tank lifting mechanism

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B67C 1/00-11/06 3E079: FF03 x BB08 x CD 42 3E079: FF03 x DE01 3E079: FF03 x 13B08 3E079: CD02 x CD42 3E079: CD02 × DD03

Claims (1)

(57) [Claims] 1. A filling liquid tank for storing a filling liquid, a valve housing provided in the filling liquid tank, a filling liquid passage formed in the valve housing, and provided in the filling liquid passage so as to be movable up and down. An exhaust pipe that introduces atmospheric pressure into the space above the filling liquid tank and allows air in the container to escape to the space above the exhaust pipe; a liquid valve that opens and closes the filling liquid passage in accordance with the elevating operation of the exhaust pipe; A valve opening / closing means for raising / lowering the liquid valve to open / close the liquid valve, a lifting / lowering member provided on the valve housing so as to be liftable / lower, a packing provided on the lifting / lowering member to seal a mouth of the container, and raising / lowering the container. A container elevating mechanism for bringing the opening of the container into close contact with the packing, and further elevating and lowering the filling liquid tank with respect to a container of the same height, Automatic air dimension adjustment apparatus gravity filling apparatus, characterized in that it comprises a tank elevating mechanism for adjusting the height of the remaining space in the container depending on the position.