JPS5918609Y2 - automatic cap removal machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic cap removal machine, and in particular, to automatically remove a cap attached to a pin installed on the inner surface of the side wall of a concave container such as a panel of a color picture tube. The present invention relates to an automatic cap removal machine that can be used to remove caps.

A typical example of a concave container is a panel of a color picture tube, and a color picture tube equipped with a panel shaped like a concave container is usually manufactured through the following steps.

That is, as shown in FIG. 1, first, a black matrix 2 made of a black light-absorbing material is formed on the inner surface of a panel 1, and a phosphor dot or stripe made of phosphor dots or stripes is formed between the black matrix 2 and on its upper surface. A light surface 3 is formed.

Further, a resin film 4 is formed on this fluorescent surface 3, and an aluminum film 5 is further formed by vapor deposition thereon.

Then, baking is performed to thermally decompose the resin film, thereby completing the panel processing process.

On the other hand, graphite 7 is applied over a certain area on the inner peripheral surface of the funnel 6, and then the seal surface 8 of the funnel 6 is brought into close contact with the panel seal surface 10 of the panel on which the shadow mask is attached via the frit glass 9. Baking is performed to bond the panel 1 and funnel 6, and the valve is completed.

An electron gun is sealed in this, and a color picture tube is manufactured through predetermined steps.

In the bulb manufactured through the above steps, several pins 11 for fixing the shadow mask are implanted on the inner surface of the side wall of the panel 1.

However, if graphite for forming a black matrix is attached to the pin 11 on the inner surface of the panel,
Because a shadow mask is attached, after the valve is completed, this graphite peels off, blocks the holes in the shadow mask, and enters the electron gun, causing trace sparks and other defects in insulation.

Therefore, it is necessary to prevent graphite and the like from adhering to the panel pins 11.

One proposed method is to cover the panel pin 11 with a cap, apply graphite, and then remove the cap.

However, this method has the disadvantage that the caps attached to the panel pins must be removed by hand one by one.

These drawbacks are not limited to panels, but are common to other concave containers that have similar pins and use caps to prevent foreign matter from adhering to these pins. be.

The present invention was made to eliminate the above-mentioned drawbacks of the conventional technology, and its purpose is to automatically remove the cap attached to the pin implanted on the inner surface of the side wall of the concave container. Our goal is to provide you with an automatic cap removal machine that can.

According to the present invention, the above purpose is achieved by controlling the forward position of the rotating concave container by a guide roller that comes into contact with the opening end surface of the rotating concave container, so that the side wall of the rotating concave container is always aligned regardless of whether the side wall is in the minor axis direction or the major axis direction. This is accomplished by attaching a contact piece that can contact and remove the cap to the tip of a rotating arm that can follow the rotation, and by always keeping this contact piece facing within the rotation trajectory of the cap.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the device of the present invention will be explained below along with the embodiments shown in the drawings.

FIGS. 2 and 3 illustrate an embodiment of the present invention, and the automatic cap removal machine, which is designated as a whole by the reference numeral 12 in the figures, is a sliding machine that is slidably mounted on a base (not shown). It has a stand 13.

This sliding table 13 is configured to be forcibly slidably moved by an air cylinder 14.

This slide table 13 is connected to a support shaft 1 via a ball bush 15.
6 is slidably fitted.

A guide roller 18 made of an elastic material such as synthetic resin 9 and rubber is attached to the tip of the support shaft 16 via a support frame 17 .
The shaft is rotatably supported perpendicular to the shaft.

Further, one end of a curved rotating arm 20 is rotatably supported at the rear end of the support shaft 16 via a bracket 19, and the other end of this rotating arm 20 is provided with a contact plate, which is a main part of the present invention. Piece 21 is fixed.

On the other hand, a spring 22 is stretched between the bracket 19 and the sliding table 13, so that the support shaft 16 is always kept on the sliding table 1.
It is energized to attract it in three directions.

Further, a roller 23 is provided near the base of the rotating arm 20.
is rotatably supported on a shaft, and this roller 23 is designed so that it can come into contact with the cam surface of a cam 24 protruding from the slide table 13.

As shown in an enlarged view in FIG. 4, the contact piece 21 in this embodiment has a rectangular cross section, and has an opening 21a in the center that opens downward and toward both sides. has been done.

A groove 21 b is formed at the top of the opening 21 a along the axial direction of the opening 21 a into which the head of the cap C mounted on the panel pin 11 of the panel 1 is fitted. The other end of this groove 21b is closed, as is clear from FIG.

Next, the operation of this embodiment configured as above will be explained.

First, as shown in FIGS. 2 and 3, the panel 1 shown as an example of a concave container is placed on a rotating shaft (not shown) located in front of the automatic cap removal machine 12, and rotated at a predetermined rotational speed. .

Next, when the air cylinder 14 is actuated to move the sliding table 13 to the left in the figure, the support shaft 16 is moved through the spring 22.
is moved to the left, and the guide roller 1 is moved to the left as shown in FIG.
8 contacts the sealing surface 10 of the panel 1.

On the other hand, even if the guide roller 18 comes into contact with the sealing surface 10 of the panel 1, the slide table 13 further moves by the stroke of the air cylinder 14, and further moves the guide roller 18 toward the panel 1.
Press it against the sealing surface of the

At the same time, as the sliding table 13 moves to the left, the roller 23 of the rotating arm 20 comes off the cam surface of the cam 24, so the rotating lever 20 comes into contact with the inner surface of the side wall of the panel 1 due to its own weight. Become.

At this time, as shown in FIG.
a is attached to the rotating arm 20 so as to be placed at a position facing the direction of rotation of the panel 1.

As the panel 1 is rotated, the cap C enters the opening 21a of the contact piece 21 and the groove 2 in the head of the upper end thereof.
1b and eventually collides with the side wall that closes one end of this groove 21b, and a large rotational moment is applied to the head of the cap C, so that it is forcibly removed from the panel pin 11 and falls.

As shown in FIGS. 2 and 3, the side wall of the panel 1 has a short diameter portion 1a, a long diameter portion 1b, and a corner portion 1C.
As the rotating arm 20 rotates, its relative position with respect to the contact piece 21 changes, but since the rotating arm 20 is structured to be able to rotate freely due to its own weight, no matter how the relative position changes, It will be understood that it can be followed.

Further, in the above embodiments, the shape of the contact piece 21 is exemplified as having a substantially U-shaped cross section, but the present invention is not limited to this. Any shape may be used as long as it is a shape that can be contacted only by the user.

Furthermore, in the above embodiments, a panel was illustrated as an example of a concave container, but it is not limited to a panel that has an approximately rectangular open end, and even a hemispherical container may have a polygonal open end. It will be understood that it may have a cylindrical shape.

As is clear from the above explanation, according to the present invention, the cap attached to the upper end of the pin implanted on the inner surface of the side wall of the concave container can be automatically removed, and the work efficiency is greatly improved. It has excellent effects such as

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of a bulb of a black matrix type color picture tube, Figs. 2 and 3 are partial longitudinal sectional side views illustrating an embodiment of the present invention, and Fig. 4 is a perspective view of a contact piece. , FIG. 5 is an explanatory diagram of the operation.

Claims (1)

[Scope of utility model registration request] A rotating arm that can rotate to follow the shape of the inner surface of the side wall of the concave container, and a portion that is attached to the tip of this rotating arm and comes into contact with a cap that is attached to a pin that is implanted on the inner surface of the side wall of the concave container. The contact piece has a contact piece that is slidably fitted into a slide table that is slid in the front and back direction by an air cylinder, and has a guide roller at its tip that contacts the open end of the concave container, and a guide roller that comes into contact with the open end of the concave container at its rear end. The pivot arm has a support shaft on which the rear end of the pivot arm is rotatably supported and a spring is stretched between it and the slide table, and the pivot arm is configured to move forward and open the concave container. An automatic cap removing machine characterized in that when the guide roller comes into contact with the end, the machine descends by its own weight toward the side wall of the concave container.