JP3089990U - Improvement of abrasive belt tool - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To easily grind the surface of a round bar or a welded and fixed steel pipe for piping using a general electric tool. A dedicated roller is mounted on a mounting portion of an electric grinder, and one of a belt polishing tool is hung on the dedicated roller. The other one is wound around the pipe steel pipe 2 to be polished, the belt polishing tool 10 is rotated, and the inner surface of the belt polishing tool 10 is polished. Further, an unjoined belt polishing tool 10 is used so that the belt polishing tool 10 can be easily wound around the welded and fixed piping steel pipe 2, and both ends of the belt polishing tool 10 are engaged when polishing.

Description

[Detailed description of the invention]

[0001] The present invention relates to an improvement in a method for polishing the surface of a steel pipe for pipe or a round bar.

[Prior Art] When polishing the surface of a round bar or a steel pipe for piping (), it is common to use a belt polishing tool () to polish the surface. The belt polishing tool () must be fixed and the round bar or pipe steel pipe () must be rotated, or the belt polishing tool () must be turned along the surface of the round bar or pipe steel pipe (). The burden was heavy. (Fig. 1)

When the steel pipe for piping () is fixed by welding, it is only necessary that the belt polishing tool () can be polished along the steel pipe () for piping, but it is expected that polishing is impossible due to the limited space. Is done. (Fig. 2)

When polishing corners and details, polishing is generally performed using an end face of a flat whetstone or a polishing disc (), but the flat whetstone or the polishing disc () is used only at a limited portion of the end face. Since it could not be polished, the whole round shape could not be easily polished. (Fig. 3)

[0005] Despite the above problems, a method of polishing a round steel pipe for pipe or a round bar () using a belt polishing tool () has conventionally been employed.

However, it is not easy to select the outer peripheral length and width of the belt polishing tool () depending on the outer diameter of the round bar or the steel pipe for piping () and the place to be polished. It was a great deal of work because we had to choose a matching rotary power tool ().

[0007] [Problems to be solved by the present invention] [0007] The problem to be solved by the present invention is to use a general electric grinder () and select a round bar without selecting the outer peripheral length of the belt polishing tool (). And that the outer peripheral portion of the steel pipe for pipes can be polished.

[Means for Solving the Problems] In order to solve the above problems, those skilled in the art decided to use a commonly used electric grinder ().

The dedicated roller () is mounted on the mounting part () of the electric grinder (). (Figure 4)

The dedicated roller () is inserted through a dedicated shaft () that can be screwed to the male screw portion () of the electric grinder () and fastened. (FIG. 4)

[0011] An engagement projection (11) and an engagement hole (12) are provided at both ends of the belt polishing tool (10), and are engaged with each other, and the inner surface side is an abrasive portion. (▲ 13 ▼). At the time of attachment, it can also be attached by passing through a steel pipe for pipes () fixed to the welded pipe. (Fig. 5)

[0012] One of a series of belt polishing tools (10) formed into a loop is hung on a dedicated roller () of an electric grinder (), and a rotating shaft (14) of the electric grinder () is rotated. Then, the belt polishing tool (10) superimposed on the directly connected special roller () rotates and grinds. (FIG. 8)

[0013]

[Embodiment of the invention]

 Hereinafter, embodiments of the invention will be described with reference to the accompanying drawings. However, the examples are merely for explanation, and do not mean the limitation or limitation of the idea.

FIG. 1 shows a conventional belt polishing tool () attached to a dedicated hand belt grinder (), and the surface of a round bar or a steel pipe for piping () is polished to the abrasive portion (▲ 13) of the belt polishing tool (). Polish the outer surface to which ▼) is attached. In this conventional polishing method, polishing cannot be performed unless the round bar or the steel pipe for piping () is rotated once or the belt polishing tool () is rotated once along the surface to be polished together with the hand belt grinder (). .

Further, FIG. 2 shows an example in which when the steel pipe for pipe () is fixed by welding, there is no space for rotating the hand belt grinder () once, so that it cannot be polished.

FIG. 3 shows a conventional polishing method. Where a hand belt grinder () could not be used, a grindstone or polishing disc () was attached to a commercially available electric grinder (), and the end face of the grindstone or polishing disc () was polished.

FIG. 4 shows a mode in which a dedicated shaft () is inserted through a dedicated roller () and attached to an electric grinder () in order to carry out the polishing method of the present invention. Regardless of the outer peripheral length of the belt polishing tool (10), the special roller () may be of any kind.

FIG. 5 shows a belt polishing tool (10) of the present invention. As shown in Fig. 2 and Fig. 3, the belt polishing tool (10) of the present invention is used for the round bar or pipe steel pipe to be polished on the pipe steel pipe () or narrow corner part fixed by welding. (), One of which is hung on the special roller () of FIG. 4, and the inner surface of the belt polishing tool (10) to which the polishing member (13) is adhered is a round bar or a steel pipe for piping ( ) Polish the surface. (FIG. 8)

FIG. 6 shows a joining method of the belt polishing tool (10) of the present invention. The conventional belt polishing tool () is bonded with an adhesive or a seal ((14)) and cannot be removed. The outer surface is the abrasive portion ((13)). (FIG. 7)

FIG. 8 shows a polishing method according to the present invention. Regardless of the outer diameter of the steel pipe for piping (), only one type of belt polishing tool (10) and dedicated roller () is required, and it can be polished on the inner surface of the belt polishing tool (10). I do. With the method of the present invention, the entire outer peripheral portion of the round bar or the pipe steel pipe () can be polished simply by changing the angle of the electric grinder ().

[Effects of the Invention] Since the product of the present invention has the above configuration, a narrow portion such as a corner portion and a pipe are fixed by a one-size belt polishing tool (10) and a special roller (). Even if it is, the operator can grind easily.

[Submission date] March 15, 2002 (2003.2.3.15)

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents] [Detailed description of the invention]

[0001] The present invention relates to an improvement of a conventional grinding belt tool (endless belt).

[Prior Art] When polishing the surface of a round bar or a steel pipe for piping (2), it is common to use an endless belt (1) for polishing. The endless belt (1) must be fixed and the round bar or pipe steel pipe (2) must be rotated, or the endless belt (1) must be turned along the surface of the round bar or pipe steel pipe (2). The burden on the workers was great. (Fig. 1)

Further, when the surface of the pipe steel pipe (2) is polished even though the pipe steel pipe (2) is fixed by welding, the endless belt (1) is moved along the pipe steel pipe (2). It is sufficient that polishing can be performed, but it is expected that polishing is not possible due to limited space. (Fig. 2)

[0004] When polishing corners or details, generally use the end face of an offset-type grindstone or polishing disc (3), but the offset-type grindstone or polishing disc (3) is limited to the end face. The entire round shape could not be easily polished because it could only be polished on the part that was cut. (Fig. 3)

[0005] Despite the problems as described above, a method of polishing cylindrical steel pipes for pipes and round bars (2) using an endless belt (1) has conventionally been employed.

However, since the outer peripheral length and width of the endless belt (1) are determined by the specifications of the rotary power tool (4), the selection work of the operator is enormous.

[0007] [Problem to be solved by the present invention] [0007] The problem to be solved by the present invention is to use a general electric grinder (5) and select the outer peripheral length of the polishing belt tool (10). The present invention provides that a round bar or an outer peripheral portion of a steel pipe for piping (2) can be easily polished.

[Means for Solving the Problems] In order to solve the above problems, those skilled in the art decided to use a commonly used electric grinder (5).

[0009] A special shaft (9) that can be screwed to the male screw portion (8) of the electric grinder (5) is inserted into the special roller (7), and the special roller (7) is fastened to the electric grinder (5). . (FIG. 4)

Both ends of the grinding belt tool (10) are provided with both engagement grooves (11) and engagement keyholes (12), which are engaged with each other to form an abrasive member (13) on the inner surface side. (FIG. 5) At the time of attachment, it can be attached around the pipe steel pipe (2) fixed to the welded pipe. (FIG. 6)

[0011] One end of the grinding belt tool (10) in a series of loops is hung on a dedicated roller (7) of the electric grinder (5), and the rotating shaft (14) of the electric grinder (5) is rotated. Then, the polishing belt tool (10) superimposed on the directly connected special roller (7) rotates to polish the outer surface of the round bar or the steel pipe for piping (2). (FIG. 8)

When polishing the steel pipe for piping (2) having a large outer diameter from the circumference of the polishing belt tool (10) of the present invention, several polishing belt tools (10) are connected and the same as above. Polishing is performed in the following manner. (FIG. 9)

[Embodiments of the Invention] [0013] Hereinafter, embodiments of the invention will be described with reference to the accompanying drawings. However, the exemplification is merely for explanation, and does not mean limitation or limitation of the idea.

FIG. 1 shows a conventional endless belt (1) attached to a dedicated hand belt grinder (4), and the surface of a round bar or a steel pipe for piping (2) is polished to a polishing member (1) of an endless belt (1). 13) Polishing is performed on the outer surface portion to which is adhered. In this conventional polishing method, polishing cannot be performed unless a round bar or a steel pipe for piping (2) is rotated or the endless belt (1) is rotated along with a surface to be polished together with a hand belt grinder (4).

Further, FIG. 2 shows an example in which, when the steel pipe for piping (2) is fixed by welding, there is no space for rotating the hand belt grinder (4) and polishing cannot be performed.

FIG. 3 shows a conventional polishing method. At the corners and other places where the hand belt grinder (4) cannot be used, an offset grindstone or polishing disc (3) is attached to a general electric grinder (5), and the end face of the offset grindstone or polishing disc (3) is polished. Was.

FIG. 4 shows an embodiment in which a dedicated shaft (9) is inserted through a dedicated roller (7) and mounted on an electric grinder (5) in order to carry out the method using the polishing belt tool (10) of the present invention. Is shown. Regardless of the outer circumference of the abrasive belt tool (10), the special roller (7) may be of one size.

FIG. 5 shows the abrasive belt tool (10) of the present invention. One end is provided with both engaging grooves (11), and the other end is provided with an engaging keyhole (12). Unlike a conventional endless belt (1) (Fig. 7), it does not form a series of loops.

FIG. 6 shows a method of joining the abrasive belt tool (10) of the present invention. The conventional endless belt (1) is joined with an adhesive or heat-resistant tape (15) to form a single wheel (Fig. 7), and cannot be removed. The polishing belt tool (10) of the present invention is provided around a round bar or a steel pipe for piping (2) to be polished in a part or the like, and polishing is performed.

FIG. 7 shows a conventional endless belt (1). The endless belt (1) is not made into a belt form from the beginning, but is cut into specified dimensions from a jumbo roll of about 1,000 mm in width and 100 m in length or several 1,000 m, and joined to the required endless belt. create. An adhesive or a heat-resistant tape (15) is used for the portion to be joined.

FIG. 8 shows a polishing method using the polishing belt tool (10) of the present invention. Regardless of the outer diameter of the pipe steel pipe (2), the polishing belt tool (10) and the special roller (7) may be of one type, and are characterized in that they can be polished by the inner surface portion of the polishing belt tool (10). With this polishing method, the entire outer peripheral portion of the round bar or the pipe steel pipe (2) can be polished simply by changing the angle of the electric grinder (5).

FIG. 9 shows that a large number of polishing belt tools (10) can be engaged and used when polishing the outer surface of the steel pipe (2) having a large outer diameter.

[Effects of the Invention] Since the product of the present invention has the above configuration, a narrow portion such as a corner portion and a pipe are fixed by a one-size belt polishing tool (10) and a special roller (7). However, the operator can easily grind.

[Brief description of the drawings]

FIG. 1 is a perspective view in which a conventional belt polishing tool () is attached to a dedicated rotary power tool (hand belt grinder) () and the surface of a round bar () is polished.

FIG. 2 Since the steel pipe for piping () is fixed by welding,
FIG. 3 is a perspective view showing that the entire surface of the steel pipe () cannot be polished.

FIG. 3 is a perspective view in which a corner to which a steel pipe for pipe () is fixed by welding is polished by using an end face of a conventional grindstone or a polishing disc ().

FIG. 4 is a perspective view showing a mode in which a dedicated shaft () is inserted into a dedicated roller () and attached to an electric grinder () in order to carry out the polishing method of the present invention.

FIG. 5 is a perspective view of a belt polishing tool (10) of the present invention. It is wound around a round bar or a steel pipe for piping (), and the inner surface becomes an abrasive part ((13)).

FIG. 6 is a perspective view in which a belt polishing tool (10) of the present invention is joined. The inner surface is the abrasive part ((13)).

FIG. 7 is a perspective view of a conventional belt polishing tool (10).
It is joined with a seal (14) or an adhesive, and the outer surface is an abrasive portion (13).

FIG. 8 is a perspective view showing a polishing method using the belt polishing tool (10) of the present invention.

[Description of symbols]… Conventional belt polishing tool… Round bar or steel pipe for piping… Whetstone or polishing disk… Rotating power tool (for conventional belt polishing tool), hand belt grinder… Electric grinder… Mounting part… Dedicated roller… ( Male screw part of electric grinder… Dedicated shaft ▲ 10… Belt polishing tool (of the present invention) ▲ 11 ▼ Engagement protrusion ▲ 12 ▼ Engagement hole ▲ 13 ▼ Abrasive material part ▲ 14 ▼ Adhesion Agents and seals

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[Procedure amendment]

[Submission date] March 15, 2002 (2002.3.1)
5)

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Name of device] Improvement of abrasive belt tool

[Utility model registration claims]

[Brief description of the drawings]

FIG. 1 is a perspective view in which a conventional belt polishing tool (1) is attached to a dedicated rotary power tool (hand belt grinder) (4) and the surface of a round bar (2) is polished.

[Fig. 2] Since the steel pipe for piping (2) is fixed by welding,
FIG. 4 is a perspective view showing that the entire surface of the pipe steel pipe (2) cannot be polished.

FIG. 3 is a perspective view in which a corner to which a steel pipe for piping (2) is fixed by welding is polished using an end face of a conventional grinding stone or a polishing disk (3).

FIG. 4 is a perspective view showing a mode in which a dedicated shaft (9) is inserted into a dedicated roller (7) and attached to an electric grinder (5) in order to carry out the polishing method of the present invention.

FIG. 5 is a perspective view of a belt polishing tool (10) of the present invention.
Wound around a round bar or a steel pipe for piping (3), and the inner surface becomes a polishing member (13).

FIG. 6 is a perspective view in which a belt polishing tool (10) of the present invention is joined. The inner surface is the abrasive part (13).

FIG. 7 is a perspective view of a conventional belt polishing tool (10). It is joined with a heat-resistant tape (14) or an adhesive, and the outer surface is a polishing member (13).

FIG. 8 is a perspective view showing a polishing method using the polishing belt tool (10) of the present invention.

FIG. 9 is a perspective view in which a number of polishing belt tools (10) of the present invention are engaged.

[Description of Signs] (1) ・ ・ ・ Conventional polishing belt tool (endless belt) (2) ・ ・ ・ Round bar or steel pipe for piping (3) ・ ・ ・ Offset type grindstone or polishing disk (4) ・ ・ ・Rotary power tool (of conventional grinding belt tool), hand belt grinder (5) ... electric grinder (6) ... mounting part (7) ... dedicated roller (8) ... (of electric grinder) Male thread part (9)… Dedicated shaft (10)… Polishing belt tool (of the present invention) (11)… Double groove part for engagement (12)… Keyhole part for engagement (13)・ Polishing member (14) ・ ・ ・ Rotating shaft (15) ・ ・ ・ Adhesive and heat-resistant tape

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 5

FIG. 2

FIG. 3

FIG. 6

FIG. 7

FIG. 4

FIG. 8

FIG. 9 ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 19, 2002 (2002.6.1
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (3)

[Utility model registration claims] The present invention is characterized in that, by attaching a special roller () to a polishing tool mounting portion () of an electric grinder (), polishing can be performed using a belt polishing tool (10).
Characteristic polishing method. (FIG. 8) 2. A belt polishing tool (10) used in the polishing method according to the first aspect of the present invention includes a polishing material portion (13) on an inner surface.
Polishing method characterized by polishing using ▼).
(FIG. 8) 3. A belt polishing tool (10) used in the polishing method according to the first aspect is provided with an adhesive or a seal (14).
A belt polishing tool characterized by not being joined by ▼). (Fig. 5)