JPH059353Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gripper mounting shaft for mounting a gripper that grips a container when capping the container with the capper.

[Conventional technology]

BACKGROUND OF THE INVENTION As a capper for capping containers filled with liquid by a filling machine, a dual-purpose machine that can be used for containers and caps of various shapes and materials has conventionally been used. FIG. 5 is a diagram showing an example of such a conventional dual-purpose cap, which includes a gripper for gripping a container, a star wheel formed with a pocket for receiving and holding the body, neck, etc. of the container. It is designed to be interchangeable so that it can be used for a variety of containers. In this capper, gripper mounting shafts 104 are fixed at equal intervals on a rotary table 102 mounted around a rotary shaft 100. Further, around the rotating shaft 100, annular bodies 108 and 1 for attaching star wheels are provided in two stages, upper and lower, via support columns 106.
10 are arranged. FIG. 5 shows that the gripper is removed from the gripper mounting shaft 104 and the star wheels 11 are attached to the upper and lower annular bodies 108 and 110, respectively.
2, 114 is attached, and the lower star wheel 114 has a stepped portion between the inner and outer circumferential sides to avoid the gripper mounting shaft 104.

[Problem that the invention attempts to solve]

In the capper having the above configuration, the shaft 104 on which the gripper is attached is fixed to the rotary table 102, and the gripper can be removed and the star wheel 11
2,114, this mounting shaft 10
4 remains, so star wheel 11
It is necessary to change the shape of 4 to avoid the gripper mounting shaft 104, which is a complicated configuration.
There was also the problem that when attaching the star wheel 114, the attaching shaft 104 got in the way, resulting in poor workability.

The present invention has been made to eliminate the above-mentioned drawbacks, and provides a gripper mounting shaft for a capper that allows the star wheel and gripper to be easily exchanged in order to allow the capper to be used for various types of containers.

[Means for solving problems]

The gripper mounting shaft of the capper according to the present invention includes a gripper mounting shaft that is erected on a rotating body at equal intervals in the circumferential direction, and to which grippers for gripping a container are attached;
It is placed closer to the inner circumference than this gripper mounting shaft,
It is equipped with a star wheel mounting member to which the star wheel that holds the container is attached, and is provided on a dual-purpose capper that allows the gripper and star wheel to be replaced.It is divided into two parts, an upper and a lower part, and the lower part can be rotated. dividing an annular connecting member into a plurality of parts to be held in the body and detachable from the rotating body;
A plurality of upper portions are supported by these connecting members, and the upper portions can be integrally attached and detached.

[Effect]

The gripper mounting shaft of the capacitor according to the present invention is divided into upper and lower parts, and the upper part can be removed.
It does not get in the way when installing the star wheel.

〔Example〕

The present invention will be explained below with reference to illustrated embodiments. 1 and 2 are a longitudinal sectional view and a plan view of a capper equipped with a gripper mounting shaft according to an embodiment of the present invention. In the figure, reference numeral 2 denotes a rotary table that is attached around a rotating shaft 4 and rotates integrally therewith, and container stands 6 are provided on this rotary table 2 at equal intervals in the circumferential direction. A pair of mounting shafts 8 and 10 for attaching grippers for gripping containers on the container stand 6 are provided on the radially inner side of each container stand 6, and above each container stand 6, Each capping head (not shown) is provided.

Each gripper mounting shaft 8, 10 is divided into upper and lower halves, as shown in FIG.
10a can be removed. The structure of the gripper mounting shafts 8, 10 will be explained in detail with reference to FIGS. 1 to 3. Gripper mounting shaft 8, 10
The lower portions 8b, 10b of the rotary table 2 are fitted into a sleeve 12 fixed to the rotary table 2. On the other hand, gripper mounting shafts 8 and 1 to which the gripper 13 is mounted
The upper portions 8a, 10a of 0 are attached to the rotating shaft 4 via a half ring-shaped connecting member 14.
The two connecting members 14 are positioned in the rotational direction by the key 4a of the rotating shaft 4. Mounting shaft upper part 8
a, 10a are fitted to the bush 16 so that they can rotate relative to each other and do not move in the axial direction, and integrally with this bush 16, the connecting member 1
It fits into the hole formed in 4. Bushiyu 16
cannot rotate relative to the connecting member 14, but can only move in the axial direction. Bushiyu 16
There are two annular grooves 16a and 16b on the outer periphery of the
are formed, and the ball plunger 18 provided in the connecting member 14 is connected to these grooves 16a, 1.
By engaging within 6b, vertical positioning is performed at two positions.

Recesses 8c, 10c are formed in the upper end surfaces of the lower mounting shafts 8b, 10b, and upper mounting shaft upper parts 8a, 1
Protrusions 8d and 10d that fit into the recesses 8c and 10c are provided on the lower end surface of Oa. The depth _L1 at which the convex portions 8d and 10d fit into the concave portions 8c and 10c is smaller than the distance _L2 between the upper and lower annular grooves 16a and 16b, so that the ball plunger 18 is not engaged with the lower annular groove 16b. When they are aligned, the convex portions 8d and 10d are attached to the lower portions of the mounting shaft 8b and 10.
The convex portions 8d and 10 are located above the upper end surface of b.
d does not mesh with the recesses 8c, 10c, and when the ball plunger 18 is engaged with the upper annular groove 16a, the protrusions 8d, 10d engage with the recesses 8c, 10c.
It is designed to fit inside c.

The rotational drive of the gripper mounting shafts 8 and 10 is as follows.
As shown in FIG. 1, this is accomplished by moving a cam follower 10e provided at the lower end of one of the mounting shafts 10 along a cam 19, but other conventionally known means may also be used.

Two pins 20 are fixed upright on the bush 16, and a horizontal pin 22 is fixed to the upper parts of the mounting shafts 8a, 10a so as to be located between these two pins 20. Therefore, the mounting shaft upper portions 8a, 10a can rotate relative to the bushing 16 by an angle that allows the horizontal pin 22 to rotate between the two upright pins 20.

In the capper having the above configuration, when using the gripper 13, as shown in FIG. 1 and FIG.
Capping is performed by attaching the gripper 13 to the upper portions 8a, 10a of the mounting shafts with the lower portions 8b, 10b integrally connected.

When using a star wheel depending on the material of the container, etc., remove the upper part of the mounting shaft 8a, 10a together with the half ring-shaped connecting member 14, and attach the rotating shaft 4.
Attach the star wheel 24 to (see Figure 4).
In this case, since the lower parts of the mounting shafts 8b and 10b hardly protrude above the rotary table 2, they do not become an obstacle to the installation of the star wheel 24, and the normally used flat disc-shaped star wheel 24 can be used. can do. Moreover, since half of the mounting shaft upper portions 8a and 10a are supported by two connecting members 14, they can be handled as one, and attachment and detachment are extremely easy.

Upper part 8 of gripper mounting shaft 8, 10 once removed
When reinstalling a and 10a, use bush 16.
In other words, the state in which the ball plunger 18 is engaged with the annular groove 16b below the mounting shaft upper parts 8a, 10
The connecting member 14 is attached to the rotating shaft 4 with the point a positioned above the connecting member 14. Subsequently, the mounting shaft upper parts 8a, 10a are moved downward, and the convex parts 8d, 10d of the mounting shaft upper parts 8a, 10a are removed.
Rotate the upper mounting shafts 8a, 10a so that they fit into the recesses 8c, 10c of the lower mounting shafts 8b, 10b,
By pushing in when the convex parts 8d, 10d match the concave parts 8c, 10c, the upper part of the mounting shaft 8a,
10a is positioned.

Note that, of the two gripper attachment shafts 8 and 10, one may be used as a fixed shaft and only one may be used as a drive shaft.

In this case, it is sufficient to fix only the upper part of the fixed shaft to the connecting member 14.

[Effect of idea]

As described above, according to the present invention, by dividing the gripper mounting shaft into two parts, upper and lower,
Even when replacing the gripper and star wheel, there is no need for a special structure, and the cap can easily be used for both purposes.

In addition, the upper part of the gripper mounting shaft is extremely easy to attach and detach, making it easy to replace the gripper and star wheel.
It is an easy task and can be done in a short time.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a capacitor equipped with a gripper mounting shaft according to an embodiment of the present invention, FIG. 2 is a plan view of the capacitor, and FIG. 3 is an enlarged view of the main parts of FIG. 2.
FIG. 4 is a plan view of the star wheel, and FIG. 5 is a vertical cross-sectional view of a capper equipped with a conventional gripper mounting shaft. 2, 4...Rotating body, 8, 10...Gripper mounting shaft, 8a, 10a...Mounting shaft upper part, 8b, 10b
... Lower part of the mounting shaft, 8c, 10c ... Recessed part, 8d,
10d...Protrusion, 13...Gritzpa.

Claims (1)

[Scope of utility model registration request] Gripper mounting shafts are installed on the rotating body at equal intervals in the circumferential direction, and grippers for gripping containers are attached to them; and stars are arranged closer to the inner periphery of the gripper mounting shafts and are attached to star wheels for holding containers. In the dual-purpose capper, which is equipped with a wheel mounting member and allows the gripper and star wheel to be replaced, the gripper mounting shaft is divided into upper and lower parts, the lower part of which is held by the rotating body, and which is detachable from the rotating body. A gripper mounting shaft for a capper, characterized in that an annular connecting member is divided into a plurality of parts, each of the connecting members supports a plurality of upper parts of the gripper mounting shaft, and the upper parts can be integrally attached and detached.