JPS6231617B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for painting a seamed portion of a can to prevent rust after seaming of a can.

(Prior Art) After filling cans with contents, cans are sealed by double seaming with seamers. At this time, the lid seaming part is strongly pressed by the seaming roll and undergoes a strong bending process, which causes cracks in the coating film that is formed prior to seaming, causing it to lose its anti-corrosion effect and cause rust to rust. There is a risk that this will occur.

In order to prevent this rusting in the seamed portion, attempts have been made to roll the can horizontally after seaming and form a correction coating only on the panel portion 1 of the seamed portion as shown in FIG. However, according to this method, the correction coating film was not formed on the cover foot radius portion 2, which is subjected to the most severe processing, and there remained a fear that rust would develop from this portion.

(Purpose of the Invention) The present invention aims to provide a correction coating device that can correct up to the cover foot radius through the same process as conventional coating devices by devising a method of contact between a can and a coating member. That is.

(Structure of the Invention) FIG. 2 shows a partial sectional view of the correction coating device of the present invention, which extends in a direction perpendicular to the plane of the paper by about twice the circumferential length of the can 4.

Guides 5 and 6 are provided on the machine frame 3 to regulate the vertical position of the can 4. Also, on the can side, fixed guides 7 and 8
It is placed on top and held at an angle of about 30 degrees to the horizontal. Reference numeral 9 denotes a feed belt that runs while contacting the upper side of the can 4 by means of rollers 10, whereby the can 4 is conveyed while rolling along the guides 5, 6, 7, and 8.

Reference numeral 11 denotes a paint reservoir that extends along the passage of the seaming portion of the can 4, and a coating member 12, which is a square felt rod whose lower surface is immersed in the paint in the paint reservoir 11, is placed above it. The one even corner part of the upper part is made to contact the seaming part of the can 4.

Since the easily deformable even corner portion of this painted member 12 is in contact with the can clamping portion of the can 4, as shown in a partially enlarged view in FIG. 3, not only the panel portion 1 but also the cover flat radius portion 2 It also makes sufficient contact with the surface and can form a coating film on the surface.

13 is a cover, and the shaft 1 is connected by the cylinder 14.
5 as an axis, and paint member 12 is rotated as shown by the dotted line.
Cover exposed areas to prevent them from drying out.

This correction coating device operates as follows.

After being seamed by the seamer, the cans are conveyed by a chute or the like as usual, and the cans are sent to the coating section with a can speed control section keeping the cans at a predetermined distance. In the painting section, as shown in Fig. 2, guides 5, 6,
7 and 8 keep the can 4 at an angle of about 30° with the horizontal.
As shown in FIG. 3, the even corner portion of the coating member 12 is rolled and sent by the feed belt 9 while being pressed by the seaming portion, and the contact portion is corrected and coated. The amount of paint applied can be adjusted by changing the length of the coating member 12 and the height of the paint surface.

The coated can is dried by appropriate means such as high frequency heating to form a finished product.

When a sensor placed at an appropriate position detects that there is no can between the seamer and the correction device of the present invention, the cylinder 14 is actuated to remove the coating member 12.
By covering the exposed portion with the cover 13, it is prevented from drying out.

(Effects of the Invention) Since the present invention has the above configuration, it has the following remarkable effects.

Since it comes into contact with and applies the coating to the even corner portion of an elastic application member such as felt, it is possible to reliably apply the coating to the cover foot radius portion of the seaming portion.

Since the can is tilted at an angle of 30 degrees to the horizontal and the paint is sufficiently applied to the radius of the cover foot of the seamed part, the correction coating 16 is formed by penetrating into the inside of the seamed part, as shown in FIG. Therefore, the seaming portion is completely corrected and rust can be prevented.

Since the coating is carried out simply by rolling the can 4 on the guide, it can be carried out using a device similar to the conventional coating device for only panel portions, and no special coating device is required.

Since the exposed surface of the painted member is covered to prevent it from drying when not being painted, the painted member does not dry and solidify when not in use, making it impossible to reuse it.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a can sealing portion subjected to conventional correction, Fig. 2 is a partial cross-sectional view of one embodiment of the coating device of the present invention, and Fig. 3 is an enlarged cross-sectional view of the painted state of the painted member. , FIG. 4 is a sectional view of a correction coating film according to the present invention. 3: Machine frame, 4: Canned food, 5, 6, 7, 8: Guide, 9: Delivery belt, 11: Paint reservoir, 12:
Painted member, 13: Cover, 14: Cylinder, 1
6: Paint film.

Claims (1)

[Claims] 1. A fixed guide for placing the canned food in an inclined state, which contacts the side surface of the can placed on the guide,
A feed belt that rolls the can on the guide, a paint reservoir that extends along the guide, and a coating that is supplied with paint from the paint reservoir and comes into contact with the seam of the rolling can to correct the seam part. 1. A correction coating device for a can seam portion, characterized in that said coating member, which is an elastic body such as felt, is in contact with a cover foot radius portion of a can at an even angle portion thereof.