JP3045807U - Tool for cutting the bottom plate of large round cans - Google Patents

Abstract

(57) [abstract] (with correction) [Problem] A cutting tool for easily and quickly cutting out a used bottom plate of a large round can without injuries or dirty hands without skill. I will provide a. SOLUTION: The tool of the present invention has an upper side of a steel cylindrical body 1 cut and formed perpendicular to the axis of the cylindrical body to form an upper end edge 2, and a lower side of the cylindrical body forms a bottom plate of a round can. The slanted cutting edge 3 is formed by cutting into a slant suitable for pressing and cutting, and the outer peripheral edge of the slanted cutting edge is formed on the can cutting blade 4 over the entire circumference. A slit-like notch 7 is formed parallel to the axis from the lowermost end 5 of the cutting edge 3 to the vicinity 6 of the upper end of the cylindrical body, and the lowermost end 5 where the notch of the inclined cutting edge is formed and the opposite end. Top end 8
, Each point 9 of the upper edge 2 of the cylindrical body corresponding to
An operation rod 12 having an operation section 11 at both ends is integrally welded and fixed to the apparatus 10 in a crosswise manner.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a relatively large round can container, for example, a round used tin can container having a content of about 3 to 10 liters (can diameter: about 20 to 40 cm, height about 20 to 40 cm). The present invention relates to a bottom plate cutting tool suitable for mass cutting in which an inverted bottom plate can be pressed from above and cut in a short period of time.

[0002]

[Prior art]

 At present, various liquid or paste-like polymer materials such as sealing materials, waterproofing materials, and coating materials are used in large quantities in construction and civil engineering. These agents and treatments are typically placed in relatively thin, lightweight tin containers and opened on-site for use. Most of these cans are round or square, and after their contents have been consumed, they are currently buried as industrial waste without being reused for resource conservation. is there. Some of these containers have an upper lid plate with a small opening for taking out the contents.However, in the case of a round can, a handle for opening can is attached integrally to the upper lid plate surface. In many cases, it is completely removed by pulling it upward. However, since the bottom plate of the round can is formed stably and firmly, it cannot be easily removed.

In order to bury such an enormous number of used tin cans, it is necessary to reduce the volume of the tin cans as much as possible, and the cans are crushed flat. The crushing of used cans requires a lot of crushing force with the bottom plate attached, and the flattening efficiency is reduced. Therefore, it is necessary to remove the bottom plate of the can. As a means for cutting the bottom plate of such a can, for example, a tool such as a can opener, keren or a scalpel has been exclusively used. However, the bottom plate cutting process using these instruments requires power, skilled skills, and takes a long time, so it is inefficient, and at that time, there is a problem in safety because the hands may be dirty or cut. Was. Furthermore, cutting the bottom plate of a large round tin can at a construction site is a laborious and time-consuming task, and it is virtually impossible to perform it in a short time.

[0004] Such disposable cans are consumed in large quantities at construction sites. For example, about 10 million cans of a two-component silicone sealing material are currently used annually, and are used at large sites. For example, 5,000 to 20,000 cans are used. In order to bury such a large number of large round cans, the work of cutting the bottom of the cans, especially the cutting treatment using conventional tools such as cans, requires enormous labor and time. In short, reducing the attendant processing work was a serious problem. In view of the situation of such flattening of round cans, the present inventor paid attention to a method of efficiently cutting the bottom plate of a relatively large round tin can that is buried in such a large amount.

[0005]

[Problems to be solved by the invention]

 In order to eliminate the disadvantages of the conventional tin cans described above, especially the conventional method of cutting out the bottom plate for flattening round cans, tinplate as a material to be cut and other comparisons Focusing on the characteristics of a container made of a metal sheet that is soft and thin, we conducted repeated trial production research on cutting tools. Accordingly, an object of the present invention is to provide a cutting tool which can easily cut a bottom plate such as a relatively large round tin can without requiring skill. Another object of the present invention is to provide a cutting tool for cutting out a bottom plate of such a round tin can in a short time and safely without damaging or soiling a hand. Still another object is to provide a round can bottom cutting technique suitable for crushing cans that can be easily cut in a state in which a round bottom plate is partially connected to the can body without being completely cut off from the main body. It is in. Other technical features of the present invention will become more apparent from the following description.

[0006]

[Means for Solving the Problems]

 The present invention provides a tool for cutting the bottom of a large round can, which has the features of claim 1 and can achieve the above object. The tool of the present invention has a tip with a slit formed on the lower inclined cutting surface of the cylindrical body of the tool at the edge of the bottom plate of the used tin can, which is turned upside down by the person holding the operating rod of the tool. The blade edge is applied to the (lower end) part, and the operation is performed so that the blade is pushed strongly downward until the downward pushing stops. Since the pressing is stopped at the point where the slit-shaped notch ends, there is an advantage that the operation of controlling the pressing operation is not required. In this cutting operation, the bottom plate of the round can can be cut in a very short time except for the part that was not cut by the slit, and the bottom plate connected by the non-cut small part can be lightly By pressing it inside, it becomes easy to crush. As described above, the tool of the present invention achieves extremely excellent cutting efficiency for crushing the round can pressure as compared with the conventional tool.

[0007]

[Embodiment of the invention]

 The cylindrical body on which the cutting blade of the bottom plate cutting tool for the large round can of the present invention is formed is a hard rigid metal that can easily tear open ordinary tins (thickness: 0.1 to 0.8 μm) by pressing. Is formed. In the present invention, steel as the rigid metal typically includes steel and stainless steel. As the steel cylinder as the body of the round can bottom plate cutting tool, the one whose outer diameter is usually about 5 to 15 mm smaller than the diameter of the round can to be cut is used. Regarding the thickness of the cylindrical body, it is desirable that the cylindrical body has a sufficiently stable strength and is as light as possible in relation to its cutting strength and operability. However, in practice, the thickness is 1 to 3 mm. Some are advantageously employed. If the thickness of the cylindrical body is too thin, the strength as a tool is insufficient, and it is not preferable because it is easily deformed in the cutting operation and the life is shortened. On the other hand, if it is too thick, the weight of the tool is heavy and operability is reduced, which is disadvantageous.

[0008] The upper end of the cylindrical body of the tool of the present invention is an open upper edge cut perpendicular to the axis of the cylindrical body, and the lower side of the cylindrical body is perpendicular to the axis of the cylindrical body. For example, the inclined cutting release edge is formed at an inclination angle in the range of about 30 ° to 45 ° with respect to the surface. Further, the cut surface of the inclined cutting edge is cut in an inclined manner from the outer surface side of the cylindrical body toward the inner surface over the entire circumference, so that the outer peripheral edge is formed into a sharp cutting blade. The angle of the cutting blade depends on the material of the can to be cut, the thickness, the cutting resistance, the material of the tool and the angle of inclination of the inclined open end. It is formed into a sharp blade in the range of about 70 ° to 70 °, and its selection and determination can be easily made empirically or by simple trial in consideration of the life of the cutting blade. In addition, the tip (lower end) and rear end (upper end) of the slanted edge where the slit-shaped notch is formed have a larger slope than the other parts to facilitate the start and end of pressing and cutting of the round can. It is desirable to have a sharper cutting edge and a larger cutting inclination angle than others.

[0009] The cylindrical body of the tool of the present invention is parallel to the axis from the tip (lowest end) of the inclined cutting (peripheral) edge to the vicinity of the upper cutting edge of the cylindrical body, for example, 15 to 30 mm from the upper edge. For example, slit-shaped notches having the same width of about 10 to 20 mm are formed. A cutting operation rod is integrally formed by welding or the like in a crosswise manner at two positions on the upper end cutting edge of the cylindrical body corresponding to the front end portion where the slit-shaped notch is formed and the rear end portion of the inclined cutting edge. The operating part, which is attached and fixed to the cutting rod and performs the cutting operation, is formed to protrude outward on both sides of the operating rod. The operating rod is preferably a lightweight rod which is convenient for the cutting operation, and is preferably a square or circular pipe having a cross-sectional shape and a rounded shape which is easy to grasp. The round can bottom plate corresponding to this slit-shaped notch is anchored to the can body without being cut off even by downward pressing and cutting operation, and after the bottom plate cutting operation is completed, the can bottom plate is pushed in with a finger. Is held inside the can body, which is convenient for the subsequent flattening of the can.

[0010] In the manual cutting of the bottom plate of a large round can with the tool of the present invention, the both bottoms of the operating rod are gripped and lifted, and the lower edge of the slit formed in the tool is placed on the edge of the bottom plate of the round can. Fitting, pushing straight down, and quickly pushing down until the end of the slit stops the pushing action, ends easily in a short time. The distance (15 to 30 mm) from the upper edge of the slit is formed smaller than the distance between the cutting edge at the rear end (upper edge) of the lower inclined cutting surface of the cylinder and the upper edge of the cylinder. You. This relative relationship is extremely important because the cutting operation is stopped after the peripheral edge of the bottom plate of the round can has been cut by the trailing edge of the inclined cutting edge of the tool. In the cutting operation, the main force is the downward pressing of the operating portion on the side where the slit is formed at the start of the cutting, and the pressing force of the other overhanging operating portion is the main force at the time of the completion of the cutting. The pressing and cutting operation is completed in a very short time of about 1 to 2 seconds.

[0011]

【Example】

 Next, the can bottom cutting tool for a large round can according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of an example of the tool of the present invention.

In the tool for cutting a bottom plate of a large round can shown in FIG. 1, the upper side of a steel cylinder 1 having an outer diameter slightly smaller than the outer diameter of a round tin can is perpendicular to the axis of the cylinder. Is formed at the upper edge 2, and the lower side is cut at an inclined angle suitable for pressing and cutting the bottom plate of the round can to form an inclined cutting edge 3, and the inclined cutting edge is formed. 3 is cut along the entire circumference from the outer surface of the cylindrical body to the inner surface, the outer peripheral edge of which is formed on the can cutting blade 4, and the inclined cutting edge 3 of the cylindrical body is cut. A slit-shaped notch 7 of the same width parallel to the axis is formed from the lowermost end (lower end) 5 to the position 6 near the upper end cutting edge, and the lowermost end (notch release) of the inclined cutting edge is formed. Part) 5 and respective positions 9 of the upper-end cutting edge corresponding to the uppermost end 8 of the inclined cutting edge opposed thereto 9 , 10, an operation rod 12 having an operation portion 11 with both sides projecting outward is integrally attached and fixed in a crosswise manner by welding or the like.

[0013]

[Effect of the invention]

 Conventionally, it took 10 to 15 seconds to cut the bottom plate of a used large round can.On the other hand, the large round can bottom cutting tool of the present invention formed a slit-shaped notch. The cutting work can be completed in a very short time of 1 to 2 seconds by simply pushing the lower pointed tip against the edge of the inverted large round can and pushing it down. . Moreover, it is extremely safe because it does not stain or cut off hands, and is extremely useful for cutting the bottom plate of a large number of large round cans.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a bottom cutting tool for a large round can according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cylindrical body 2 ... Upper upper cut edge 3 ... Lower inclined cut edge 4 ... Cutting blade 5 ... Tip (lower) part of inclined cut edge 6 ... Near upper cut edge with slit-shaped notch formed Position 7 ... Slit-shaped notch 8 ... Rear end (upper) part of inclined cutting edge 9,10 ... Welding point 11 ... Operation part 12 ... Operation rod

Claims (2)

[Utility model registration claims] 1. A tool for press-cutting a bottom plate of a used round can, comprising: a steel cylinder having an outer diameter slightly smaller than an outer diameter of the round can and a thickness of 1 to 3 mm. A side is formed at an upper cutting edge cut perpendicular to the axis of the cylinder, and a lower side is formed at a lower cutting edge cut at an angle to a plane perpendicular to the axis of the cylinder, The outer peripheral edge of the inclined cutting edge is formed on the entire circumference of the can cutting blade, and a slit-shaped cutting parallel to the axis from a lower end portion of the inclined cutting edge of the cylindrical body to a position near the upper end cutting edge. Chips are formed,
Further, at each point of the upper end cutting edge corresponding to the front end portion and the opposite rear end portion of the inclined cutting edge, an operation rod having an operation rod portion projecting outward on both sides is integrally formed in a crosswise manner. A tool for cutting the bottom plate of a large round can that is attached and fixed. 2. The bottom plate of a round can according to claim 1, wherein the lowermost end of the lower inclined cutting edge of the cylindrical body is formed with a sharper inclination angle larger than the inclination angle. Cutting tool.