JPH068939A - Drum can and manufacture thereof - Google Patents

Abstract

PURPOSE:To prevent a content of feculence, dirt and dust from residing, and improve the workability. CONSTITUTION:The title drum can 1 consists of a top plate 5 or bottom plate 7 on which a port for content 2 and an opening for welding work 3 with a comparatively larger diameter are provided and a body plate 6, and the top plate 5 and bottom plate 7 are integrally welded to the body plate 6, and at the same time, a blind lid 4 is welded to the opening for welding 3 for the structure. In order to manufacture the drum can 1, the top plate 5 or bottom plate 7 on which the port for content 2 and the opening for welding work with a comparatively larger diameter are provided are integrally welded from the inner surface, a welder is inserted from the opening for welding work 3 of the top plate 5 or bottom plate 7, and the bottom plate 7 or top plate 5 is integrally joined by welding to the body plate 6 from the inner surface, and after the welding between the body plate 6 and the bottom plate 7 or top plate 5, the blind lid 4 is welded to the opening for welding work of the top plate 5 or bottom plate 7 for the constitution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a drum can and workability which can prevent residual contents such as chemical agents, paints, adhesives, oils, synthetic resins, etc. The present invention relates to a good drum can and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, this kind of drum can is mainly made of iron, but it is inexpensive and is often thrown away after being used once or several times. However, in recent years, the opportunities for containing high-grade chemical liquids have increased, and the use of durable and expensive stainless steel drum cans has increased. Therefore, since this stainless steel drum can is expensive, it must be washed and used many times. Such a drum can, for example, when connecting the top plate 13 and the body plate 14 provided with the content entrance / exit portion 12 having a relatively small diameter or connecting the main plate 15 and the body plate 14 to each other, for example, FIG. 5 and FIG. As shown in FIG. 6, they are wound and coupled to each other to form the coupling portion 16.

[0003]

However, since such a connecting portion 16 is a winding connection, the curved portion 13 of the top plate 13 and the base plate 15 is provided on the drum cavity 17 side of the connecting portion 16.
An annular first gap portion 18 exists between a and 15a and the inner surface of the body plate 14. Therefore, a narrow gap due to winding connection is likely to continue intermittently, and a slight second gap 19 is continuously generated at the winding ends of the top plate 13 and the body plate 14 and the ground plate 15 and the body plate 14, respectively. Since it is easy to carry out, when used again and again, the first and second gap portions 18 and 19 are likely to slightly retain the chemical liquid previously stored therein, even if they are carefully washed. Second gap 19
The previously stored chemical liquid etc. that has penetrated into the can hardly be washed, but penetrates deeply and remains.

Further, in the first gap portion 18, dirt, dust and the like that have entered from the inlet / outlet portion 12 are likely to remain. Therefore, even if an attempt is made to fill and weld the first gap portion 18 with an appropriate welding machine, the inlet / outlet portion 1
No. 2 has a relatively small diameter, and this welding machine is difficult to insert into the drum cavity 17. Therefore, this filling and welding work is troublesome. Even if this filling and welding work becomes possible, the filling and welding work is sufficiently stable. However, there was a drawback that the chemical solution stored in the previous time could hardly be washed through the narrow gap due to poor welding, etc., and it penetrated deeply and remained, impairing the hermeticity.

[0005]

SUMMARY OF THE INVENTION A drum can and a method of manufacturing a drum can according to the present invention are intended to solve the above-mentioned problems. The drum can is used for welding work having a relatively large diameter with an entrance / exit of a content. It consists of a top plate or base plate having an opening and a body plate, and the top plate and the base plate are integrally welded to the body plate, respectively, and the blind lid is welded to the opening for welding work. Characteristically, the method for manufacturing a drum can includes, when integrally welding the top plate or the base plate provided with the entrance / exit of the contents and the opening for welding operation of a relatively large diameter to the body plate from the inner surface, A welding machine is inserted from the opening for welding work of the plate or the base plate to integrally join the base plate or the top plate to the body plate by welding from the inner surface, and after the body plate and the base plate or the top plate are welded, the top plate Or weld a blind lid to the opening for welding work on the main plate Characterized by being adapted to.

[0006]

1 to 4 are views showing a preferred embodiment of a drum can according to the present invention. FIG. 1 is an external perspective view, FIG. 2 is a sectional view showing a main part of a top plate, and FIG. FIG. 4 is an enlarged cross-sectional view of an essential part showing an example of the main plate, and FIG. 4 is an enlarged sectional view of an essential part showing another example of the main plate.

As shown in the drawings, the drum can 1 of the present invention has a port 2 for welding contents such as chemical agents, paints, adhesives, oils, synthetic resins, etc. and a welding opening having a relatively large diameter. A blind cover 4 is fixed to the opening 3 by welding, and a top plate 5, a body plate 6 and a base plate 7 are integrally formed.

The diameter of the opening 3 is approximately 140 mm / φ.
The above is desirable. In addition, a rising portion 3a having a slight height is formed on the peripheral portion of the opening 3 to facilitate welding. In addition, on the outer peripheral portion of the blind lid 4, the rising portion 3 that can be fitted to the rising portion 3a.
A peripheral end portion 4a having substantially the same size as the height dimension of a is formed. Since the blind lid 4 has a reinforcing property, it has an upward concave shape as shown in FIG. 2, but may have a downward concave shape.

The top plate 5 is integrally joined to the body plate 6 from the inner surface by welding. Further, a main plate 7 is integrally connected to the body plate 6 by a connecting portion 8 formed by winding and connecting as shown in FIG. 3, and the main plate 7 is connected to the drum cavity 9 side by the main plate. Since an annular gap 10 is formed between the curved portion 7a of 7 and the inner surface 6a of the body plate 6, a nozzle of a welding machine (not shown) is inserted from the opening 3 for welding operation into the gap 10. It is continuously filled and welded by welding.

As another example, as shown in FIG. 4, a bottom plate 7 of the body plate 6 is abutted against a lower end 6b of the body plate 6 with a loosely rising peripheral wall 7b, and the bottom plate 7 is attached to the outside of both sides. The ring-shaped ring 11 is fitted, and the lower end 6b of the body plate 6, the upper end 7c of the loose rising peripheral wall 7b, and the inner surface of the upper end 11a of the ring 11 are inserted from the welding opening 3 (not shown). 3 by the nozzle of the welding machine
They are joined together by spot welding.

In this way, the inner surface of the bottom surface of the main plate 7 is formed as if the bottom surface of the pot were smoothly formed by the above-mentioned welding. Therefore, when the drum can 1 is washed, the contents do not remain. The filth and dust that have entered from the entrance / exit portion 2 do not remain. Moreover, after the welding work is completed, the blind lid 4 is integrally fixed to the opening 3 for welding by welding so that the drum can 1 having a large strength and not deformed by the internal pressure can be manufactured. it can.

Next, a method for manufacturing the drum can 1 of the present invention will be described. First, the blind lid 4 is placed in the opening 3 for welding work.
The top plate 5 to which the above is not attached is integrally joined to the body plate 6 by welding from the inner surface by a nozzle of a welding machine (not shown).
After that, a welding machine (not shown) is inserted from the welding operation opening 3 to integrally join the base plate 7 to the body plate 6 from the inner surface by welding, and after the base plate 7 is welded to the body plate 6, the welding work is performed. The blind lid 4 is fixed to the opening 3 for welding by welding to manufacture the drum can 1. As described above, by providing the welding work opening 3, the workability is improved, and the joining of the top plate 5 and the base plate 7 to the body plate 6 by welding is stable and reliable,
It is also beautifully finished.

Although the opening 3 is provided in the top plate 5 in the embodiment of the present invention, it goes without saying that it may be provided in the base plate 7.

[0014]

The drum can according to the present invention comprises a top plate or base plate provided with an entrance / exit for the contents and an opening for welding work having a relatively large diameter, and a body plate. In addition to being integrally connected to the body plate, the base plate is integrally connected to the body plate, and the blind lid is fixed to the opening, so that the strength is increased and the sealing property is not impaired, and the residual contents are retained. This has the effect of reliably preventing the residual accumulation of dirt, dust, and dust. Further, the method for manufacturing a drum can according to the present invention comprises integrally joining a top plate or a base plate having an entrance / exit for the contents and an opening for welding work having a relatively large diameter to the body plate by welding from the inner surface, and Insert the welding machine from the opening for welding work and integrally join the base plate or top plate to the body plate by welding from the inner surface, and after welding the body plate and the base plate or top plate, in the opening for welding work Since the blind lid is fixed by welding, sufficient stable filling and welding work can be performed when manufacturing the drum can, and the workability is extremely good without causing welding defects. It has various effects such as stable, reliable, and beautiful finish.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a preferred embodiment of a drum can according to the present invention.

FIG. 2 is a cross-sectional view showing a main part of a top plate.

FIG. 3 is an enlarged cross-sectional view of an essential part showing an example of the main plate.

FIG. 4 is an enlarged sectional view of an essential part showing another example of the main plate.

FIG. 5 is an external perspective view showing an example of a conventional drum can.

FIG. 6 is a vertical sectional view of FIG.

[Explanation of symbols]

 1 Drum can 2 Entrance / exit of contents 3 Opening for welding work 4 Blind lid 5 Top plate 6 Body plate 7 Base plate 8 Connection part

Claims (2)

[Claims] 1. A top plate or base plate provided with an entrance / exit for contents and an opening for welding work having a relatively large diameter, and a body plate. The top plate and the base plate are integrally welded to the body plate, respectively. A drum can, characterized in that a blind lid is welded onto the opening for welding work. 2. When the top plate or base plate provided with the entrance / exit for the contents and the welding work opening having a relatively large diameter is integrally welded to the body plate from the inner surface, the top plate or base plate is welded. For welding work of the top plate or base plate after welding the body plate and the base plate or top plate by inserting a welding machine from the opening for welding and integrally connecting the base plate or top plate to the body plate by welding from the inner surface A method for manufacturing a drum can, wherein a blind lid is welded to the opening.