JP2700302B2 - Torque transmission device to glass container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for transmitting a rotational force to a glass container, which is capable of efficiently transmitting a rotational force to the bottom of the glass container.

[0002]

2. Description of the Related Art Generally, glass containers (eg, glass bottles) are used for inspecting product dimensions, filling the contents of the glass containers, attaching labels to the body of the glass containers, attaching films, and the like. It is known to rotate about an axis. At this time, conventionally, while supporting the mouth of the glass container with a mouthpiece, by transmitting the rotational force of the bottom tip bearing supported to the bottom of the glass container, the glass container is rotated. I have.

[0003]

However, according to the conventional structure, the bottom of the glass container has a curved surface with a constant curvature, so that when the rotational force is transmitted at the tip of the bottom chip, the center of rotation is shifted. There is. In addition, when the device is used for a long period of time, the bearing for supporting the bottom tip is worn, so that there is a problem that the above-described displacement of the rotation center is promoted. If the rotation center is shifted, there is a problem that accurate dimensional inspection cannot be performed, and accurate filling of contents, labeling, film bonding, and the like cannot be performed.

In recent years, shrinking a film on the body of a glass bottle while rotating the glass bottle has been performed.

However, if the center of rotation is shifted in such a case, the film is shrunk obliquely to the glass bottle. This state is generally referred to as oblique overlay,
Product defects in appearance. This is the biggest factor that hinders productivity and work during film shrink.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a device for transmitting a rotational force to a glass container, which solves the above-mentioned problems of the prior art and can surely transmit the rotational force to the bottom of the glass container. Is to do.

[0007]

To achieve the above object, the present invention provides an apparatus for transmitting a rotational force to a glass container having a bottom chip for transmitting a rotational force to the bottom of the glass container. And a recess for receiving the projection is provided at the center of the bottom of the glass container.

In recent years, shrinking a film on, for example, a body of a glass bottle while rotating a glass container has been performed. In this case, usually, a rotational force transmitting device to the glass container having a bottom tip that transmits the rotational force to the bottom of the glass container is used, but if the tip of the bottom chip can reliably catch the bottom of the glass container, The rotational force is accurately transmitted to the glass container, and the film is accurately shrunk to the body of the vial without causing a runout.

According to the present invention, there is provided an apparatus for transmitting torque accurately. Since the tip of the bottom chip is received in the concave portion provided in the bottom of the glass container, when transmitting the rotational force to the bottom of the glass container, the center of rotation is not shifted, and the rotational force is transmitted accurately.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a first embodiment of a device for transmitting a rotational force to a glass container according to the present invention.

In FIG. 1, reference numeral 1 denotes a turntable which rotates in the direction of an arrow. On the periphery of the turntable 1, dozens of glass containers 100 (hereinafter, referred to as glass bottles 100) are placed.
0 is revolved in the direction of the arrow by the turntable 1 while being rotated by the rotational force transmission device 10 (FIG. 2) described later. The glass bottle 100 is taken into the turntable 1 from the conveyer 3 through the guide 81, and after approximately one round, is discharged to the conveyer 5 through the guide 83.

[0012] This apparatus is a film (for example, one with contents, a trademark, etc.) covered on the body of the glass bottle 100.
And devices 71 and 7 for generating hot air at 200 to 300 ° C. around the turntable 1.
3,75 are arranged.

FIG. 2 shows a torque transmitting device 10 for rotating the glass bottle 100. This torque transmitting device 1
0 is provided corresponding to the number of glass bottles 100 and revolves integrally with the turntable 1. Torque transmission device 10
Is a mouthpiece 1 that supports the mouth of the glass bottle 100
1 and a bottom chip 13 for transmitting a rotational force to the bottom of the glass container 100.

The mouthpiece 11 is fixed to a shaft 15, which extends upward through a bush 17 fixed to the turntable 1, and has an upper end 15a.
, A cam follower 19 is fixed. The cam follower 19 abuts the profile of the cam 21, and the cam 21 is fixed to a fixed portion and does not rotate integrally with the turntable 1.

The cam 21 extends in the circumferential direction of the turntable 1, and its cam profile is higher from point B to point A along the direction of revolution in FIG. In this high part, according to the cam profile, the cam follower 19
Is pushed up, and the mouthpiece 11 is pushed up in conjunction therewith. In other lower portions of the cam profile, the cam follower 19 descends according to the cam profile, and the mouthpiece 11 is pushed down by its own weight.

The bottom tip 13 is fixed to a bottom shaft 25, and the bottom shaft 25 is
Extends downward through a bush 27 fixed to the bushing. The central portion 25a is supported by a bearing 28, on which a cam follower 29 is fixed. The cam follower 29 abuts the profile of the cam 31, which is fixed to a fixed portion and does not rotate integrally with the turntable 1.

This cam 31 extends in the circumferential direction of the turntable 1, and its cam profile is reduced from point B to point A along the direction of revolution in FIG. In this lower part, according to the cam profile, the cam follower 29
And the bottom tip 13 is pushed down by its own weight. In other high portions of the cam profile, the cam follower 29 is pushed up according to the cam profile, and the bottom tip 13 is pushed up in conjunction therewith.

Although not shown, the bottom shaft 25 is connected to a motor via a gear and is rotated by this.

According to this embodiment, as shown in FIG. 3, a recess 200 having a diameter of about 7 mm and a depth of about 0.7 mm is provided at the center of the bottom of the glass bottle 100. The bottom of the conventional glass bottle 100 is a curved surface having a constant curvature, and has no concave portion or the like. The tip (projection) 13 a of the bottom tip 13 that transmits a rotational force to the bottom of the glass bottle 100 is received in the recess 200. Preferably, a resin is provided at the tip of the projection 13a.

Next, the operation of this embodiment will be described.

Referring to FIG. 1, glass bottle 100 is taken in from conveyor 3 to the position of point A of turntable 1, and after approximately one round, is discharged from position of point B of turntable 1 to conveyor 5. The body of the glass bottle 100 transferred on the above-mentioned conveyor 3 is already covered with a film.
When 0 revolves on the turntable 1, the devices 71, 7
Shrink by hot air from 3,75.

Between point B and point A along the direction of revolution,
As described above, by the action of the upper and lower cams 21 and 31,
The mouthpiece 11 rises, and the bottom tip 13 descends. When the glass bottle 100 taken in from the conveyor 3 reaches the point A, the mouthpiece 11 is lowered by the action of the cams 21 and 31, and as shown in FIG.
At the same time as holding the mouth of 00, the bottom tip 13 rises and starts transmitting torque to the bottom.

According to this embodiment, the bottom chip 1
3, the leading end 13a fits into the concave portion 200 at the bottom of the glass bottle 100, as shown in FIG. 3, so that the rotational force is transmitted accurately without shifting the center of rotation.

According to this, since the film can be stably mounted, the rotation speed of the bottom chip 13 can be increased, and the productivity can be improved. Further, even if the mounting speed is increased, the quality does not deteriorate, and so-called oblique covering of the film can be prevented, so that the workability can be improved.

Further, in the prior art, if the bearing 28 is worn, the displacement of the center of rotation is promoted. Therefore, the bearing 28 is frequently replaced in order to prevent the displacement, but according to this embodiment. Thus, even if the bearing 28 is worn to some extent, the displacement of the rotation center is not promoted, so that the frequency of replacement of the bearing 28 can be reduced. Therefore, maintenance costs can be reduced.

As described above, the present invention has been described based on one embodiment, but the present invention is not limited to this.
Needless to say, the present invention requires rotating a glass bottle, such as a device for inspecting product dimensions of a glass container, a device for filling the contents of a glass container, a device for applying a label to the body of a glass container, and a plastic shield device. Can be applied to all the devices with the above.

[0027]

As is apparent from the above description, according to the present invention, the rotational force of the bottom chip can be accurately transmitted to the bottom of the glass container.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a device for transmitting a rotational force to a glass container according to the present invention.

FIG. 2 is a side view showing a rotational force transmitting device to the glass container.

FIG. 3 is a sectional view showing the same glass container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turntable 3,5 Conveyor 10 Rotational force transmission device 11 Mouthpiece 13 Bottom tip 28 Bearing 71,73,75 Device for generating hot air 100 Glass container (glass bottle) 200 Recess

Claims (1)

(57) [Claims] 1. A device for transmitting a rotational force to a glass container having a bottom chip for transmitting a rotational force to a bottom portion of the glass container, wherein a projection is provided at a tip of the bottom chip, and a concave portion for receiving the projection is formed in a bottom portion of the glass container. A torque transmitting device for a glass container, which is provided at the center of the glass container.