JPH06198233A - Device for coating metal cap with rustproof coating material - Google Patents

Abstract

PURPOSE:To uniformly and certainly apply rustproof coating material to the whole of the cut edge part of a metal cap such as a cap fitted with a pull ring or a crown. CONSTITUTION:The pull ring of a metal cap 1 fitted with the pull ring moving along a chute 11 passes through the nip between a pair of rotationally driven sponge like pull ring part coating rollers 15, 16 to be coated with rustproof coating material. Further, the skirt wall part coating roller 30 arranged under the pull ring part coating rollers 15, 16 in the direction right-angled to the rollers 15, 16 comes into contact with the cut edge part of a skirt wall in a rotary state to coat the pull rig with the rustproof coating material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for applying anticorrosive paint to a cut edge portion of a cap with a tension ring or a cap made of metal such as a crown mounted on a bottle or the like.

[0002]

2. Description of the Related Art A metal cap is stamped from a blank to be molded, and therefore has a cut edge portion. Even if a coating film is formed on the front and back surfaces of the blank, the metal material is exposed at the cut edge portion. It is in a state of being rusted easily. Therefore, a rust preventive paint is conventionally applied to the cut edge portion of a crown or the like, but as a conventional technique, for example, JP-A-58-70855 and JP-A-62-62.
Those described in Japanese Patent Publication No. 149366 and the like are known. These prior arts, while the crown is held and transported by a magnetic transport belt or turret, by rotating the cut edge portion to the belt or sponge-like coating material to which the anticorrosive coating has adhered, to cut edge portion. Anticorrosion paint is applied all around. Therefore, in order to apply the anticorrosive paint to the entire circumference of the cut edge portion, the cap is required to rotate at least one rotation while being in contact with the paint application body during transportation.

However, the cap may slip during transport, resulting in uneven rotation, and may pass through the coating applicator without rotating one or more revolutions. It is difficult to apply. Further, when the coating material is fixed, the cut edge hits a specific narrow area of the coating material, so that the coating material is liable to be cut and damaged. Further, as a device for applying a rust preventive paint to the cut edge portion of the crown, a device for applying an electrodeposition coating is also known (for example, Japanese Patent Laid-Open No. 56-7655), but these devices are expensive. There are problems such as certain. On the other hand, in the metal cap with tension ring as shown in FIG. 6, the cut edge is on the edge of the skirt wall of the cap body and the tension ring. It cannot be applied to the attached cap.

[0004]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned drawbacks of the conventional rust preventive paint coating apparatus for metal caps, and it is possible to uniformly and surely prevent the entire cut edge portion of the metal cap. An object of the present invention is to provide an inexpensive rust-preventive coating device which can be applied with rust paint and can be surely applied with rust-preventive paint even to the cut edge portion of the pull ring with the pull ring.

[0005]

SUMMARY OF THE INVENTION The rust preventive paint coating apparatus of the present invention which solves the above problems faces a cap moving passage so that a roller surface is in rotary contact with a cut edge surface of a moving metal cap. Arrangement roller formed of elastic body driven to rotate, anti-corrosion paint storage tank that stores anti-corrosion paint, and anti-corrosion paint stored in the anti-corrosion paint storage tank And a supply roller for supplying the rust preventive paint to the application roller by rotating contact with the application roller directly or via an intermediate roller.

Further, when the metal cap is a crown, the above-mentioned application roller can be achieved by only one, but when the metal cap has a pulling ring protruding on the extension of the skirt wall, the application is performed. A roller for tensioning the ring portion, which is arranged so as to face the moving path of the cut edge portion such that the roller is in rolling contact with the cut edge portion of the tension ring; This can be achieved by using a skirt wall portion application roller which is arranged at a position apart from the tension ring portion application roller in a direction perpendicular to the tension ring portion application roller. It is preferable that the pulling ring portion applying rollers are a pair of sponge rollers which are in rotary contact with each other.

[0007]

[Function] The outer periphery of the coating roller is constantly immersed in the rust-preventive paint in the rust-preventive paint storage tank, and the rotating supply roller makes direct contact with the rust-preventive paint by rotating contact with the rust-preventive paint. The paint is supplied and is in a uniform state. Therefore, the pulling ring portion protruding from the lower end of the skirt wall of the metal cap with the pulling ring passes while in contact with the rotating pulling ring portion coating roller surface, so that the circumference of the coating roller formed of an elastic body is passed. The surface is pressed against the tension ring to rotate and the anticorrosive paint is applied. In particular,
If the application roller is composed of sponge-like rollers that are in rotary contact with each other, the tension ring portion is bitten and sent by the pair of application rollers, so that the sponge is elastically deformed and the entire tension ring is wrapped and sent. ,
The anticorrosive paint is surely applied to the entire tension ring part. The metal cap with a tension ring that has passed the position of the tension ring coating roller passes through the skirt wall cutting edge while rotating at a constant speed while being in contact with the peripheral surface of the skirt wall coating roller. The entire circumference surely comes into contact with the skirt wall part application roller, and the application of the rust preventive paint is ensured without any application leakage.

When the metal cap is a cap having a cut edge only at the opening edge such as a crown, a coating roller having a width equal to or larger than the opening diameter of the crown is provided at the cut edge of the crown continuously moving in the passage. Since it rotates and bites while feeding, even if the cutting edge is slightly outward in the radial direction from the opening, the coating roller can be elastically deformed and can make sufficient contact with the cutting edge. It is possible to reliably apply anticorrosive paint.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. The rust preventive paint applicator shown in FIGS. 1 to 5 shows an embodiment of the anticorrosive paint applicator having a cap with a tension ring as shown in FIG. The tension ring cap 1 shown in FIG. 6 includes a top wall 3 and a skirt wall 4 of the cap body 2.
A tension ring 6 is mounted on the extension of the tear portion 5 which is formed over. The cap has a cut edge portion around the lower end edge 7 of the skirt wall and the entire circumference of the tension ring 6. Anticorrosion paint application device 10 shown in FIG.
Means that the cap 1 with a pulling ring, which is continuously conveyed by the chute 11 forming the passage of the cap, passes through the pulling ring cut edge part application part and the skirt wall cut edge part application part, so that the entire cut edge part is formed. The anti-corrosion paint is surely applied.

A chute 11 for transporting the cap 1 with a pulling ring has a chute body 12 for guiding the cap body, as shown in a sectional view of FIG.
And is covered with a pop-out prevention plate 14 that covers the opening, leaving a gap 13 through which the tension ring passes. The pop-out prevention plate 14 extends up to the upper portion of the coating portion of the tensile ring cut edge portion. However, as shown in FIG. 4, the pop-out prevention plate is not provided on the chute located in the coating portion of the pulling ring cut edge portion. In addition, the guide of the chute body is formed to be low so that the skirt wall cut edge portion guides the cap in a state of slightly protruding outward from the chute body. It should be noted that FIG. 1 is shown with the pop-out prevention plate 14 removed.

The tension ring cut edge application section has a pair of tension ring section application rollers 15 and 16 formed of sponge which feeds the tension ring 6 of the tension ring cap 1 supplied by the chute from both sides. is doing. The pulling ring portion application rollers 15 and 16 are provided via supply rollers 19 and 20 and intermediate rollers 21 to 24, which are partially immersed in the rust preventive paint stored in the rust preventive paint storage tanks 17 and 18, respectively. The rust-preventive paint in the rust-preventive paint storage tank is rotated and brought into contact with each other, and is transferred and supplied through these roller groups. The material of the supply roller and the intermediate roller is preferably a material such as stainless steel or plastic that can be impregnated into the inside of the surface of which a rust preventive paint is attached.

Numerals 27 and 28 are scrapers, which scrape off the rust-preventive paint that has adhered excessively in contact with the supply roller and the application roller so that the rust-preventive paint is always applied in an appropriate amount evenly on the cut edge portion. It is for controlling the quantity. The scraper may be always in contact with the roller surface, but may be driven by an actuator as needed or at predetermined time intervals so as to be in contact with the roller surface. Although not shown, a scraper is also arranged in the left roller group in FIG. Further, in the present embodiment, the scraper is provided so as to contact the surfaces of the coating roller and the supply roller, but the present invention is not necessarily limited to this. The design can be changed as appropriate by providing a scraper so as to contact the rust paint leveling roller.

On the other hand, as shown in FIG. 5, the skirt wall cut edge portion applying portion is provided with the pulling ring portion applying roller 1.
5 has a skirt wall portion application roller 30 which is arranged at a right angle to the application roller and which is provided so as to come into contact with the skirt wall cut edge portion of the cap 1 with a pulling ring that falls along the chute body 12. ing. The coating roller 30 is formed of sponge like the tension ring portion coating rollers 15 and 16, and is in rotary contact with the supply roller 33 partially immersed in the rust-preventive paint reservoir 32 through the intermediate roller 31. Anti-corrosion paint is being transferred and supplied sequentially.

In this embodiment, the rollers of the tensile ring cut edge coating section and the skirt wall cut edge coating section are driven to rotate by one motor 40, as shown in FIGS. 2 and 1. As described above, the output shaft of the motor 40 is connected to the pulling ring portion applying roller shaft 41 and rotationally drives it, and each roller of the pulling ring cut edge portion applying portion is rotated by gear transmission from the pulling ring portion applying roller shaft 41. It is designed to be driven. Further, a rotary shaft 44 which is rotationally driven from a pulley 42 fixed to the pulling ring portion coating roller shaft 41 via a belt 43 or a chain.
The bevel gear provided on the end of the skirt and the bevel gear 46 provided on the skirt wall application roller shaft 45 mesh with each other to drive the skirt wall application roller shaft 45 to rotate, and the skirt wall application roller shaft 45 transmits the gear by gear transmission. Each roller of the skirt wall cut edge coating section is rotationally driven.

With the rust preventive coating device of the present embodiment having the above-described structure, the rust preventive paint is applied to the cut edge portion of the cap with the tension ring as follows.
The metal cap 1 with a tension ring, which is continuously fed in the chute 11 with the tension ring protruding outward,
The tension ring portion 6 projecting from the chute body 12 is bitten and sent between the pair of tension ring portion application rollers 15 and 16 which rotate while contacting each other, and the rust preventive paint is applied therebetween. The metal cap with the tension ring that has passed between the tension ring part application rollers is immediately placed under the tension ring part application roller with the skirt wall cut edge part protruding from the chute body. As shown in FIG. 5, it reaches the position and passes through the gap between the skirt wall portion application roller which is rotationally driven and the bottom surface of the chute. In the meantime, the skirt wall part application roller, which has a width larger than the opening diameter of the metal cap with the tension ring and is formed of sponge, sends the metal cap with the tension ring while biting the cut edge part of the skirt wall. The entire circumference of the cut edge portion is surely brought into contact with the skirt wall portion application roller, so that the rust preventive paint is surely applied without the occurrence of application leakage. After the application of the anticorrosive paint, the metal cap with a tension ring is flown downward between the antirust paint tanks by a chute similar to that shown in FIG. Be transferred to.

FIG. 7 shows an embodiment of an anticorrosive coating device for applying anticorrosive coating to the cut edge portion of the crown. 50 in the figure
Is a chute that forms the passage of the crown 8. As shown in the enlarged view of FIGS. 8 and 9, the chute main body 52 having the passage 51 having a stepped cross section and the crown do not protrude from the passage. Although the cover 53 covers the passage as described above, the portion facing the coating roller 55 described later is such that the coating roller can be in rotational contact with the cut edge surface 9 of the crown 8 in the chute. There is no cover and the passage is shallow. The coating roller 55 is formed of sponge as in the above-described embodiment, and has a roll width of at least the opening diameter of the crown. Reference numeral 56 denotes a rust preventive paint storage tank, in which the rust preventive paint 57 is stored. 58
Is a supply roller, a part of which is soaked in the rust preventive paint 57 and is rotatably supported by the bearing. Reference numeral 59 denotes an intermediate roller whose peripheral surface is in rotary contact with the supply roller 58 and the coating roller 55, and transfers the rust preventive paint from the peripheral surface of the supply roller to the peripheral surface of the coating roller. Reference numerals 60 and 61 denote leveling rollers for controlling the amount of paint adhered on the peripheral surfaces of the supply roller and the intermediate roller. The rollers other than the coating roller are made of an appropriate material such as metal or plastic. Further, these rollers are rotationally driven in synchronization with each other by a drive mechanism (not shown) as in the above embodiment.

The apparatus of the present embodiment constructed as described above is
As in the above-described embodiment, the coating roller 55 bites while rotating to the cut edge portion of the crown that continuously moves in the passage formed by the chute, so that the cut edge is slightly outward in the radial direction from the opening. Also, as shown in FIG. 9, the sponge can be deformed to make sufficient contact with the cut edge portion, and the anticorrosive paint can be reliably applied to the cut edge portion. Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various design changes such as the arrangement of each roller and the drive mechanism are possible. Also,
In the above embodiment, the metal cap is supplied to the coating device by the chute, but it is also possible to supply the cap by the turret.

[0018]

The anticorrosive paint application device for metal caps of the present invention is constructed as described above and has the following special effects. Since the application roller formed of an elastic body is rotationally driven and comes into contact with the cut edge portion in a rotating manner, the rust preventive paint can be uniformly and reliably applied to the entire cut edge portion of the metal cap. Moreover, the structure is simple, the handling is easy, and the cost is low. Further, according to the configuration of claim 2, the rust preventive paint can be surely applied to the pulling ring cut edge portion of the cap with the pulling ring, which conventionally could not be automatically applied with the rust preventive paint. By configuring the tension ring coating roller with sponge rollers that are in rolling contact with each other, the sponge elastically deforms and the entire tension ring is wrapped and sent, and the rust preventive paint is reliably applied to the entire tension ring. , The anti-corrosion paint is surely applied without any application leakage. Even with a metal cap such as the crown whose cutting edge is slightly downward from the opening, the sponge can be deformed to make sufficient contact with the cutting edge, and the rust preventive paint can be reliably applied to the cutting edge. It can be applied. Since the coating roller is in rotary contact with the cut edge portion of the metal container, the coating roller is less damaged by the cut edge and the service life of the coating roller is longer than that of the conventional one.

[Brief description of drawings]

FIG. 1 is a schematic front view of a rust preventive paint coating apparatus for a metal cap according to an embodiment of the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along the line BB of FIG.

5 is a cross-sectional view taken along the line CC of FIG.

FIG. 6 is a perspective view of a metal cap with a tension ring.

FIG. 7 is a schematic front view of a rust preventive paint coating apparatus for a metal cap according to another embodiment of the present invention.

8 is a cross-sectional view taken along the line DD of FIG.

9 is a cross-sectional view taken along the line EE of FIG.

[Explanation of symbols]

1 Cap with Tension Ring 6 Tension Ring 8 Crown 10 Anticorrosion Paint Application Device 11, 50 Chute 15, 16 Tension Ring Part Application Roller 17, 18, 32 Anticorrosion Paint Storage Tank 19, 20, 3
3 Supply rollers 21-24 Intermediate rollers

Claims (4)

[Claims] 1. A device for applying rust preventive paint to a cut edge portion of a metal cap, which is arranged facing a cap moving passage so that a roller surface is in rotary contact with a cut edge surface of a moving metal cap. The coating roller is made of an elastic body that is driven to rotate, the rust preventive paint storage tank that stores the rust preventive paint, and the rust preventive paint that is partly immersed in the rust preventive paint is driven to rotate. An anticorrosive paint application device for a metal cap, characterized in that the anticorrosive paint is supplied from the supply roller to the application roller by rotary contact directly or via an intermediate roller. 2. An apparatus for applying anticorrosive paint to a cut edge portion of a metal cap having a tension ring protruding above a skirt wall extension, wherein the application roller is the tension ring. A tension ring portion applying roller arranged to face a moving path of the cut edge portion so as to make a rotary contact with the cut edge portion; and a tension ring portion applying roller so as to make a rotary contact with the cut edge portion of the skirt wall. 2. The rust preventive paint applying device for a metal cap according to claim 1, wherein the pulling ring applying roller and the skirt wall applying roller arranged in a direction perpendicular to the pulling ring applying roller are arranged at a distance from each other. 3. The rust preventive paint applying device for a metal cap according to claim 2, wherein the pulling ring portion applying rollers are a pair of sponge rollers which are in rotary contact with each other. 4. The rust preventive paint applying device for a metal cap according to claim 1, wherein the rust preventive paint applying device is a device for applying the rust preventive paint to a cut edge portion of the crown.