JPH0210038B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lifting device for a rotary filling device, and more specifically, to a lifting device for a rotary filling device, in which a lifting member connected to a lifting table on which a container is placed is raised and lowered by a cam member. This invention relates to a lifting device for a rotary filling device.

``Prior Art'' Conventionally, rotary filling devices for filling containers with liquid have been widely used, and the filling operation is usually carried out by
First, an empty container is supplied from the outside via a supply star wheel to an elevating table provided on the rotating body of a rotary filling device so that it can be raised and lowered, and then the elevating table is raised to open the filling nozzle as the container rises. The container filled with the filling liquid is then lowered to its original height and then transported to the outside using a discharge star wheel.

The elevating device for elevating and lowering the elevating table generally includes an elevating member that is fitted and supported by the rotating body of the rotary filling device so as to be able to move up and down and connected to the elevating table, and that is arranged along the locus of movement of the elevating member. and a cam follower that engages with the cam member provided at the lower end of the elevating member,
A configuration is adopted in which the elevating member is raised and lowered in accordance with the rotation of the rotating body.

By the way, when containers are supplied and discharged from the rotary filling device using the supply star wheel and the discharge star wheel, the containers are moved from the rotary filling device to the discharge star wheel in an S-shape. Therefore, the centrifugal force applied to the filling liquid in the container acts in the opposite direction due to the transfer from the rotary filling device to the discharge star wheel. In this case, there is no problem if the container is filled with filling liquid leaving a space at the top like a bottle, but if the container is filled with filling liquid up to the top opening like a can, there is no problem. There is a problem with the liquid overflowing.

For this reason, conventionally, when the container is a can, a discharge conveyor is connected tangentially to the rotary filling device, and the container is conveyed as straight as possible from the rotary filling device while being discharged. This is to prevent the liquid from overflowing. However, if the above-mentioned bottles and cans are filled with one rotary filling device, the supply star wheel can be shared between the bottles and the cans, but the discharge star wheel can be used for the bottles and the cans. Since a discharge conveyor will be provided for each, there will be a difference between the container conveyance range between the supply star wheel and the discharge star wheel and the container conveyance range between the supply star wheel and the discharge conveyor. Therefore, it is necessary to set the cam members for raising and lowering the lifting table individually to suit the conveyance range thereof.

"Problems to be Solved by the Invention" Conventionally, when a container is changed, the cam member is replaced to correspond to the changed container, or the position of the cam member is changed in the circumferential direction or in the vertical direction. Settings need to be reset, and such adjustment work is time-consuming and requires a lot of effort.

"Means for Solving the Problems" In view of such drawbacks, the present invention provides a second cam member that is disposed along the locus of movement of the elevating member, and a second cam member that is engaged with the second cam member on the elevating member. A second cam follower is provided that can be engaged with the first cam follower, and the first cam follower can be selectively engaged with the first cam member, or the second cam follower can be selectively engaged with the second cam member.

"Operation" With such a configuration, the first cam follower can be simply replaced with the first cam member, or the second cam follower can be replaced with the second cam member, without changing the positions of the first cam member and the second cam member. The operating range and operating amount of the elevating member can be easily changed by simply selectively engaging the elevating member.

"Example" The present invention will be described below with reference to the illustrated example.
In FIG. 3, reference numeral 1 denotes a conventionally known rotary filling device, and a supply star wheel 2 is provided at a predetermined position of this rotary filling device 1, and a bottle serving as a first type container is transported by a supply conveyor 3. After being synchronized by a timing screw 4, it can be fed into the rotary filling device 1 via its feed star wheel 2.

A supply/discharge star wheel 5 for discharging the bottle filled with the filling liquid by the rotary filling device 1 is provided at the rear side in the rotational direction of the rotary filling device 1 adjacent to the supply star wheel 2, A star wheel 5 for supplying and discharging bottles from the rotary filling device 1
The waste is further discharged to a discharge conveyor 7 via an idle wheel 6 adjacent thereto, so that it can be supplied to a downstream capper, crowner, etc. (not shown) by the discharge conveyor 7.

At this time, the second timing screw 4' described below is removed from the tip of the timing screw 4, so that the bottle does not come into contact with the second timing screw 4'. There is. Further, if necessary, the bottles are directly supplied from the idle wheel 6 to a capper or crowner 8 shown by an imaginary line, and then transferred to a carry-out conveyor 9.
It is also possible to have it discharged.

Therefore, the supply conveyor 3 is provided to extend beyond the supply star wheel 2 to the supply/discharge star wheel 5, and the timing screw 4 is
The second timing screw 4' is removably attached to the tip of the container, and the can serving as the second type container is transferred to the rotary filling device via the supply conveyor 3, timing screws 4, 4', and supply/discharge star wheel 5. We are able to supply it within 1 hour.

A discharge conveyor 10 for discharging cans filled with liquid by the rotary filling device 1 in the connecting direction is installed at a position on the rear side in the rotational direction of the rotary filling device 1 adjacent to the supply/discharge star wheel 5. The cans from the rotary filling device 1 can be fed to the downstream seamer 11 via its discharge conveyor 10.

According to such a configuration, the transport distance for bottles between the supply star wheel 2 and the supply/discharge star wheel 5 by the rotary filling device 1 and the transport distance for cans between the supply/discharge star wheel 5 and the discharge conveyor 10 are determined. Therefore, the necessary transport distance for bottles and cans can be secured without increasing the size of the rotary filling device 1.

However, since the conveyance ranges of cans and bottles are different from each other in the rotational direction, separate can cam members 12 and bottle cam members 13 are provided to move the containers up and down independently within their respective ranges. It is necessary to select and use one of the cam members 12 and 13 depending on whether the cam member is a can or a bottle.

1 and 2 show an embodiment in which either the can cam member 12 or the bottle cam member 13 can be easily selected and used, and the rotary filling device 1 includes a rotating body 16 that is rotationally driven by a motor (not shown).
Elevating tables 17 are provided on the outer periphery of the rotating body to place containers at equal intervals, and each elevating table 17 is fixed to the upper part of a cylinder 18 as an elevating member provided on the rotating body 16 so as to be movable up and down. ing.

A piston 19 fitted relatively slidably into the cylinder 18 is connected to a fixed rod 2.
0 to a lower annular manifold 21, which is connected to each cylinder 18.
It is fixed to the rotating body 16 by a connecting member (not shown) disposed at an intermediate position. This manifold 21 is communicated with a compressed air source (not shown) through appropriate means, and a pressure chamber 2 is defined above the piston 19 through a passage 22 formed in the fixed rod 20 and the piston 19.
3, thereby constantly urging the cylinder 18 upward.

A bifurcated portion 25 is integrally formed at the lower end of the cylinder 18, as shown in FIG.
This is engaged with a guide rod 26 which is disposed parallel to the axial direction of the cylinder 18 and fixed between the rotating body 16 and the manifold 21 so as to be movable up and down. 27 is always facing a predetermined direction.

Further, as shown in FIGS. 1 and 2, a protrusion 28 is integrally formed at the lower end of the cylinder 18 at a position different from the bifurcated portion 25. An extending stopper member 29 is attached. This stopper member 29
The cylinder 18 is opposite to a stopper 30 provided at the cylinder 18, and is configured to define the maximum raised position of the cylinder 18.

Further, the can cam member 12 is provided inside the cylinder 18 along the movement trajectory T, and the bottle cam member 13 is provided on the outside along the movement trajectory T of the cylinder 18 over a required range. (See Figure 3). And the cylinder 18
A cylindrical rotating member 31 is rotatably attached to the lower part of the
A can cam follower 3 that engages with the can cam member 12 at an interval of 90 degrees on the circumferential surface of this cylindrical rotating member 31.
2 and a bottle cam follower 33 that engages with the bottle cam member 13 are attached.

A positioning pin 34 is attached to the cylindrical rotating member 31 so as to be slidable in the radial direction.
The fixing pin 34 is urged radially inward by a spring 35, and its tip is inserted into one of two engagement holes 36 (only one shown in the drawing) provided at a required position on the circumferential surface of the cylinder 18. The cylindrical rotating member 31 can be fixed to the cylinder 18 through engagement.

The engagement holes 36 are provided at intervals of 90 degrees, and when the positioning pin 34 is engaged with one of the engagement holes 36, the can cam follower 32 can be engaged with the can cam member 12. At the same time, the bottle cam follower 33 can be positioned at a position where it does not come into contact with the bottle cam member 13. On the other hand, when the cylindrical rotating member 31 is rotated 90 degrees clockwise in FIG. 1 and the positioning pin 34 is engaged with the other engagement hole 36, the bottle cam follower 32 is The can cam follower 33 is in a position where it can be engaged with the member 12.
can be positioned at a position where it does not come into contact with the can cam member 13.

In the above configuration, when filling a can, the positioning pin 34 is engaged with one of the engagement holes 36 to move the can cam follower 32 to the can cam member 1.
If the rotating body 16 is rotated in this state, the can cam follower 32 can be engaged with the can cam follower 32.
engages with the can cam member 12 to push down the cylinder 18 against the air pressure introduced into the pressure chamber 23, thereby holding the lifting table 17 at the lower end position.

When the can is fed onto the lifting table 17 via the supply/discharge star wheel 5 in this state, the engagement between the can cam follower 32 and the can cam member 12 is released, and the lifting table 17 is moved into the pressure chamber 33. is raised by the air pressure. As the can rises, a liquid valve of a filling nozzle (not shown) is opened and filling is performed. When the filling is completed, the can cam follower 32 engages with the can cam member 12 again and lifts the lifting table 17. It will now be lowered to its original lowering end position. The can filled with the filling liquid is then carried out from the discharge conveyor 10.

On the other hand, when filling a bottle, the positioning pin 34 is pulled out from one engagement hole 36, the cylindrical rotating member 31 is rotated 90 degrees clockwise in FIG. engagement hole 3
By engaging with 6, the bottle cam follower 3
2 can be placed in a position where it can engage with the bottle cam member 12, thereby allowing the bottle to be filled with filling liquid in the same manner as described above.

In the above embodiment, the cam follower 32 for cans and the cam follower 33 for bottles are provided separately.
Of course, both may be used in common.

"Effects of the Invention" As described above, according to the present invention, simply by selectively engaging the first cam follower with the first cam member or the second cam follower with the second cam member, the cam members can be easily engaged. The effect is that the operating range and operating amount of the elevating member operated by the can be changed.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a main part showing an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view taken along the - line in FIG. 1,
FIG. 3 is a schematic plan view of the whole. DESCRIPTION OF SYMBOLS 1... Rotary filling device, 12... Cam member for cans (first cam member), 13... Cam member for bottles (second cam member), 16... Rotating body, 17... Lifting table, 18... ... Cylinder (lifting member), 31 ... Cylindrical rotating member, 32 ... Cam follower for cans (first cam follower), 33 ... Cam follower for bottles (second
Cam follower), 34...Positioning pin, T...
Movement trajectory.

Claims (1)

[Scope of Claims] 1. An elevating member that is provided on a rotating body so as to be able to rise and fall freely and is conveyed on a predetermined movement trajectory as the rotating body rotates; an elevating table provided on this elevating member; The container includes a first cam member disposed along the movement locus of the member, and a first cam follower that engages with the first cam member to raise and lower the elevating member, and the container on the elevating table is raised and lowered for filling. In an elevating device for a rotary filling device that fills a container with a filling liquid from a nozzle, a second cam member is disposed along a movement locus of the elevating member, and the second cam member is attached to the elevating member. A rotary filling device characterized in that a second cam follower is provided that can be engaged with the first cam follower, and the first cam follower can be selectively engaged with the first cam member, or the second cam follower can be selectively engaged with the second cam member. Lifting device. 2. The lifting device for a rotary filling device according to claim 1, wherein the first cam follower and the second cam follower are a common cam follower.