JP2009142966A - Sand blaster - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sand blaster for avoiding the event that dust interrupts an inside view while preventing the displacement of a working box. <P>SOLUTION: The sand blaster comprises the working box 1 on which a balance weight to be suspended on the reverse side of an epitaph or gravestone is continuously provided via a string 16, in the box wall of which a predetermined hole and a transparent window are formed, and which is mounted on the surface of the epitaph or the gravestone, and an engine blower 2 connected via a flexible hose 19 to a suction port in the side face of the box wall for generating an amount of suction wind greater than an amount of forcible feed wind mixed with sand blast to be supplied to the working box. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sandblaster that engraves characters on a tombstone or a tombstone provided outdoors.

  It is often done locally to engrave letters in grave magazines and tombstones. In particular, grave magazines are mostly carried out locally because letters are added to the stone plates already built at the grave. There are various tools for this character engraving work, but since it is not so large and beautiful characters can be engraved, it is often a sandblaster as described in the prior art of Patent Document 1 below. Specifically, a work box was attached to the tomb magazine and tombstone, and in the work box, a blown air mixed with sandblasting was blown to the tomb magazine and carved letters.

  However, the swarfed swarf becomes a large amount of dust and fills the work box. For this reason, a dust exhaust fan is provided, but it is not fully useful, and it may be necessary to wait for a while until the inside becomes visible. Furthermore, the dust blows out of the work box, and the worker takes this properly. For this reason, it is the grade that a protective garment like a raincoat is necessary, and wearing each time is complicated, and it is too hot to work in summer.

In addition, the working environment is expected to deteriorate due to dust. In addition, dust collectors that require cyclones, dust collectors, and generators may be used instead of dust collectors, but this increases the price and increases the weight. Difficult to carry. In addition, it was difficult to fix the work box, and the characters sometimes collapsed due to movement during work.
JP-A-2005-273248

  The present invention solves the above-described problems, and embodies a sandblaster having a work box in which dust does not accumulate and is sufficiently fixed to a grave magazine / gravestone.

  Under the above-mentioned problems, the present invention has the balance weight suspended from the back of the tomb magazine or tombstone described in claim 1 connected with a string, and a predetermined hole and a transparent window are formed on the box wall. A work box attached to the surface of the grave magazine or tombstone, and a suction hose that is connected to the suction port provided on the side of the box wall via a flexible hose and is larger than the amount of pressure blast mixed with sandblast supplied to the work box The present invention provides a sandblaster comprising an engine blower for generating wind.

  Further, in the above work box, the present invention is the means described in claim 2, wherein the suction port is formed in the upper part of the bay window formed in the box wall, leaving a gap below, 5. Means in which stoppers that can be advanced until they protrude to the back surface are formed at two left and right positions on the upper surface of the box wall, and means for forming the see-through windows at the front and front and side corners of the box wall are provided. To do.

  According to the first aspect of the present invention, since the engine blower having a large capacity for generating the suction air larger than the pressure blast of the sandblast supplied to the work box is equipped, dust does not collect in the work box. There is no blowout. Therefore, there is no need for protective clothing and there is no deterioration in the working environment. In addition, the balance weight makes the work box fixed to the grave magazine and tombstone stronger, and enables accurate engraving.

  According to the means of claim 2, since the blast material having a high specific gravity is deposited under the suction port, it is not wasted and discarded (recyclable). According to the means of claim 3, the work box can be securely fixed even when the character is carved toward the end of the tombstone / gravestone. According to the fourth aspect of the present invention, when the front surface is narrow, a front corner see-through window may be used.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The sand blaster of the present invention comprises a work box 1 and an engine blower 2. FIG. 1 is a perspective view of a sandblaster work box 1. The work box 1 is basically a rectangular box, and an insertion hole 3 for inserting an arm for working is radially formed on the front surface of the box wall. It is provided with a rubber plate 4 that is broken into two, and a work hole 5 for blowing a pressured air mixed with sandblast to a tomb magazine or the like is provided on the back surface with a trim seal 6 attached to the back. .

  In this case, the lower surface is open, and a collection bag 7 for collecting the sandblast projected here is attached. Sandblast, which is a blast material, is composed of sand, beads, resin, metal, and the like. A bay window 8 is formed on one of the side surfaces, and a suction port (cylinder) 9 is formed in a state where a gap is left in the upper part of the bay window 8. In addition, an inlet 10 with a wire mesh that allows inflow of air is provided on the other side surface. This is because wind must enter the work box 1 in order to suck the pressure blast mixed with the sandblast at a supply amount or more.

  Furthermore, a handle 11 for hanging is provided on the upper surface, and two stoppers 12 that can protrude rearward are provided on both sides thereof. In addition, a transparent window 13 that can be closed with a transparent plate or the like is provided above the insertion hole 3 on the front surface of the box wall so that the state of work can be visually confirmed. The front and side corners are also provided with see-through windows 14 facing obliquely. This is for peeking when it is not possible to peek through the front see-through window 13.

  A balance weight 15 is also attached to the work box 1. Specifically, a weight comparable to the weight of the work box 1 is used, and this is tied to the handle 11 or the like with a string 16 or the like. A method of using the balance weight 15 will be described later. FIG. 2 is a perspective view of the engine blower 2. In short, the engine and a powerful suction device are integrated (17 is a stand), and between the suction port 18 and the suction port 9 of the work box 1. A flexible hose 19 is connected. In addition, a dust bag 21 for collecting grinding waste is connected to the discharge port 20.

  The case of engraving characters in the grave magazine 22 by the sandblaster described above will be described. FIG. 3 is a side view showing a state in which the work box 1 is attached to the grave magazine 22 (b) to (c) are the same members as in FIG. 4 is a front view, but first, the string 16 is passed over the upper surface of the grave magazine 22, and the work box 1 is hanged on the front and the balance weight 15 is suspended on the back. The work hole 5 is made to be along the surface of the grave magazine 22 while being sufficiently sealed with the trim seal 6. After adjusting the height, the work box 1 is attached to the grave magazine 1 with a band 23 or the like. 15 is used to facilitate the adjustment at this time and to prevent the work box 1 from slipping down due to its weight. Part cut open Te other previously pasted masked character template (not shown).

  By the way, depending on the grave magazine 22, there are cases where the character to be engraved is close to the end and the work box 1 needs to be attached to the end side. In such a case, if the band 23 is tightened tightly, the work box 1 is moved inward and shifted in position. In such a case, the above-described stopper 12 is projected to the back side along the side surface of the grave magazine 22. In this way, the position does not move even if the band 23 is tightened strongly (the plan view of FIG. 4 is in this state).

  When the above operations are completed, the work box 1 and the engine blower 2 are connected by the flexible hose 19, and the engine blower 2 is switched on. On the other hand, in the vicinity of the work box 1 is a tank 24 for storing sandblast, and high pressure air is sent to the tank 24 by a compressor (not shown). Further, since a sandblast supply hose 25 extends from the tank 24, a nozzle (not shown) at the tip is inserted through the insertion hole 3. FIG. 5 is an explanatory diagram showing the character engraving work state. The operator engraves the character by blowing a sandblast mixed air blown from the nozzle while looking through the see-through window 13 or the like onto the character template.

  At this time, a large amount of grinding dust from the surface of the grave magazine 23 is generated in the work box 1 as dust, but the engine blower 2 sucks with a larger air volume than the pressure blast of the sandblast. No dust accumulates in 1. Therefore, the field of view is secured, the work does not need to be interrupted (working efficiency is good), and it is not exposed to dust, so it is not necessary to wear protective clothing. It is also important that the grinding dust suction port 9 sucked by the engine blower 2 is formed in the upper part of the bay window 8 leaving a gap in the lower part. Only the grinding scraps are sucked, and the sand blast must not be sucked. However, in this case, sand blast having a high specific gravity is accumulated in the gap portion of the lower portion and is not sucked.

  There are other advantages of using the engine blower 2. Generally, there is a cyclone type dust collector that exerts a strong suction force and is easy to dispose of dust, but such a thing becomes heavy and difficult to transport to the site. However, the engine blower 2 is not so heavy (about 9 kg including the work box 1) and is easy to carry. Note that a cyclone may be provided on the upstream side of the engine blower 2, and this has the advantage of facilitating waste. Further, the sandblaster is not limited to grave magazines and tombstone character carvings, and may be anything. In short, anything that performs sandblasting using the work box 1 is acceptable.

It is a perspective view of a work box. It is a perspective view of an engine blower. It is a side view which shows attachment of a work box. It is a front view which shows attachment of a work box. It is a top view of the work box which uses a stopper. It is explanatory drawing which shows the state of work.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Work box 2 Engine blower 3 Insertion hole 4 Rubber plate 5 Work hole 6 Trim seal 7 Collection bag 8 Exit window 9 Suction port 10 Wire net 11 Handle 12 Stopper 13 Perspective window 14 Perspective window 15 Balance weight 16 String 17 Stand 18 Suction port 19 Flexible Hose 20 Discharge port 21 Dust bag 22 Grave magazine 23 Band 24 Tank 25 Supply hose

Claims (4)

  A balance weight suspended from the back of the tombstone or tombstone is connected with a string, a predetermined hole and a transparent window are formed in the box wall and attached to the surface of the tombstone or tombstone, and a side wall of the box wall. A sandblaster comprising: an engine blower that is connected to a provided suction port via a flexible hose and generates an amount of suction air larger than the amount of pressure blast mixed with sandblast supplied to a work box.   2. The sandblaster according to claim 1, wherein the suction port is formed with a gap below the upper part of the bay window formed in the box wall.   The sandblaster according to claim 1 or 2, wherein stoppers that can be advanced to the rear surface are formed at two positions on the left and right sides of the upper surface of the box wall.   The sandblaster according to any one of claims 1 to 3, wherein the see-through windows are formed at the front surface of the box wall and at the corners of the front surface and the side surface.