JPH06122103A - Drilling refuse treatment device - Google Patents

Abstract

PURPOSE:To provide the device for catching and discharging the drilling refuse scattering to the periphery of the drill bit of a drill when a ceiling is drilled by the drill. CONSTITUTION:A drill refuse treatment device has a bottomed cylindrical body 21 having the through-hole 23 of a drill bit provided to the central part of the bottom part 22 thereof and having a drilling refuse discharge part 25 provided to the side part thereof and the bellows member 27 extending from the opening part 26 of the bottomed cylindrical body 21 in the axial direction thereof and an annular inclined surface 28 is formed to the bottom part 22 centering around the through-hole 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a perforated scrap processing apparatus for capturing and discharging perforated scrap scattered around a drill bit of a perforator when the perforator is used to perforate a ceiling of a building or the like.

[0002]

2. Description of the Related Art Conventionally, when drilling a high place such as a ceiling of a building, a method of mounting a punch on a punch stand and remotely punching from the floor has been adopted. During drilling, since the drilling dust scatters and falls from around the drill bit of the drilling tool, a drilling dust processing apparatus has been proposed which normally captures this drilling dust and discharges it appropriately. As such a drilling waste processing device, a suction type drilling waste processing device is known in which a hose end of a suction device is connected to a cover that covers the periphery of a drill bit. However, this device has a problem in that it requires a long suction hose, a suction device, and other facilities, is inferior in workability, and is expensive. Therefore, the present applicant invented a new drilling waste treatment device that solves the problems of the conventional device and filed a patent application (Japanese Patent Application No. 4-216338).

As shown in FIG. 6, the main part of the previously filed apparatus is a bottomed cylindrical body 5 having an insertion hole 2 in a bottom portion 1 and a discharge portion 4 for punching scraps in a side portion 3, and a bottomed cylindrical body 5 having the same. There is a bellows body 13 that extends axially from the opening 12 in the upper part of the bottom cylinder body 5, and the drill bit 7 of the drilling tool 6 is inserted into the bellows body 13 from the insertion hole 2 of the bottomed cylinder body 5. It has become.
The perforation tool 6 is fixed to the hollow pole 10 of the perforation tool stand by the perforation tool fixing means 8 and 9, and the lower part of the bottomed tubular body 5 is attached to the perforation tool fixing means 8 via the attachment portion 11. In addition, the tip of the discharge unit 4 for punching dust is connected to the hollow pole 10 so that the discharged punching dust is accommodated therein. The mounting portion 11 has an opening 1 for operating the drill chuck 14 of the punch 6.
5 are provided. When the tip of the drill bit 7 is brought into contact with the ceiling or the like for drilling, drilling chips scattered around the drill bit 7 are captured by the bellows body 13 and the bottomed tubular body 5, and the discharge portion 4 of the bottomed tubular body 5 is discharged. Is discharged to the hollow pole 10.

[0004]

SUMMARY OF THE INVENTION The above-described drilling waste processing apparatus has a simple structure and is capable of efficiently catching drilling waste, and has an excellent effect that it is easy to handle. However, since the bottom surface of the bottomed cylinder of this device is flat, the movement of the perforated chips introduced into the bottomed cylinder is not always smooth. Therefore, it is an object of the present invention to provide a drilling waste processing apparatus in which the movement of the drilling scraps on the bottom surface of the bottomed tubular body and the dischargeability of the drilling scraps thereby are further improved.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided an apparatus for processing perforated shavings, comprising: a bottomed cylindrical body having a drill bit insertion hole at the center of the bottom thereof and a shaving discharge portion at a side thereof. And a bellows body extending in the axial direction from the opening of the bottomed cylindrical body, and at the time of drilling, a drill bit of a drilling tool is inserted from the insertion hole into the bellows body through the bottomed cylindrical body to cover the periphery thereof. Has been An annular inclined bottom surface centering on the insertion hole is formed at the bottom of the bottomed cylindrical body. This inclined bottom surface may have a slope that becomes deeper from the center toward the periphery, or conversely, a slope that becomes shallower from the center toward the periphery.

[0006]

According to the drill dust processing apparatus of the present invention, the periphery of the drill bit is covered with the bottomed cylindrical body and the bellows body during drilling, and the drill dust generated is trapped inside. Then, the drilling waste introduced into the bottomed cylinder is smoothly moved to the discharge part without staying at the bottom part by synergistic effect of the slanting effect of the annular inclined bottom surface of the bottomed cylinder part and the vibration effect due to the rotation of the drill bit. To do. That is, when the annular inclined bottom surface is inclined so that it becomes deeper from the center toward the periphery, the perforated scraps that have dropped to the bottom roll down on the inclined bottom surface due to vibration and move to the periphery, and the bottomed cylindrical body It is quickly discharged from the discharge part provided on the side of the. Also, when the annular inclined bottom surface is inclined so that it becomes shallower from the center to the periphery, the drilling chips that have fallen to the bottom gather near the drill bit in the center due to vibration, but the drill bit that rotates at high speed. The rotational kinetic energy is imparted by the centrifugal force, and the centrifugal force repels the energy to the periphery, and the centrifugal force is quickly discharged from the discharge portion provided on the side portion of the bottomed cylindrical body.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.
FIG. 1 is a partial cross-sectional view showing an example of a drilling waste processing device of the present invention. The drilling waste processing device 20 has a bottomed cylindrical body 21. An insertion hole 23 is provided at the center of the bottom portion 22 of the bottomed tubular body 21, and a side portion 24 is provided with a hole scrap discharge portion 25. Opening 26 in the upper part of the bottomed tubular body 21
A bellows body 27 is provided so as to extend in the axial direction from.
Further, the bottom portion 22 of the bottomed tubular body 21 is formed with an annular inclined surface 28 that becomes deeper from the center toward the periphery.

FIG. 2 shows such an inclined surface 28 shown in FIG.
It is an expanded sectional view of the bottomed cylinder 21 in which was formed. Bottom 2
An annular protrusion 29 protruding upward is provided on the periphery of the insertion hole 23 provided at the center of the second hole 2, and becomes deeper from the center toward the periphery via a flat annular bottom surface 30 around the annular protrusion 29. An inclined annular inclined surface 28 is formed. However, the flat annular bottom surface 30 may be omitted and the annular inclined surface 28 starting from the periphery of the annular protrusion 29 may be formed. The annular protrusion 29 may be omitted.

FIG. 3 is an enlarged cross-sectional view showing another example of the bottomed cylinder which can be used in the present invention. As in the case of FIG. 2, an annular projection 29 protruding upward is provided on the periphery of an insertion hole 23 provided in the center of the bottom portion 22 of the bottomed tubular body 21, and a flat annular bottom surface 30 around the same is provided. An annular sloping surface 28 is formed so that the slope becomes shallower from the center toward the periphery. In FIG. 1, the perforation tool 6 is fixed to the hollow pole 10 of the perforation tool stand by the perforation tool fixing means 8 and the like, and the lower part of the bottomed cylindrical body 21 is fixed to the perforation tool fixing means 8 via the mounting portion 11. There is. The attachment portion 11 is provided with an opening 15 for operating the drill chuck 14 of the punch 6.

The drill chuck 14 in this example has a structure in which the drill bit 7 can be attached / detached by pushing the chuck cover 31 downward. That is, when a worker inserts his / her finger through the opening 15 formed in the mounting portion 11 and slides the chuck cover 31 downward, the steel ball 32 is positioned at the intermediate enlarged portion of the steel ball holding portion formed on the inner surface thereof. To do. Therefore, the steel ball can be moved outward in the radial direction, whereby the steel ball 32 is disengaged from the engaging groove of the drill bit 7, and the drill bit 7 can be detached from the chuck tip. It should be noted that even with other generally known drill chucks, the attachment / detachment work of the drill bit 7 can be performed through the opening 15.

In this embodiment, before the drill bit 7 is mounted on the drill chuck 14 as described above, the rotary blades 33 for discharging drilling chips are mounted by fitting or the like in advance. That is, when the drill bit 7 equipped with the rotary blades 33 is attached to the drill chuck 14, as shown in FIG.
3 is attached to a position where it comes close to or contacts the bottom portion 22 in the bottomed tubular body 21. FIG. 4 shows an enlarged perspective view of the rotary blade 33. The rotary wing 33 has an elongated, substantially ellipsoidal main body 34 made of, for example, elastic and abrasion-resistant rubber or plastic, and the left and right parts of the main body 34 in the longitudinal direction have circular tips. Arc-shaped wings 35 and 36 are formed. The main body 34 has a flat surface on the upper and lower surfaces and a tapered surface on the side surface. However, this wing can be one or more than two. Further, the outer shape of the rotary blade may be a rectangular parallelepiped.

Further, a through hole 37 having a step is provided in the center of the main body 34. The inner diameter of the small diameter hole 38 at the upper part of the through hole 37 is made slightly smaller than the outer diameter of the grip portion of the rear part of the drill bit 7, and the rotary blade 33 can be fitted from the tip of the grip portion. . The inner diameter of the large-diameter hole 39 below the through-hole 37 is set to be the same as or slightly larger than the outer diameter of the annular protrusion 29 in the bottom portion 22 shown in FIG. 2, and the rotary blade 33 has a bottom as shown in FIG. Bottom part 2 of cylinder 21
When fitted in a position close to 2, the annular projection 29 is adapted to be loosely inserted in the large diameter hole 39.

By fitting the annular projection 29 and the large-diameter hole 39 as described above, it is more certain that the drilling dust introduced into the bottom portion 22 of the bottomed tubular body 21 will flow out from the insertion hole 23 to the drill chuck 14 side. To prevent. When the annular projection 29 is not provided on the bottom portion 22 of the bottomed tubular body 21, the through hole 37 of the rotary blade 33 is composed of only the small diameter hole 38.

The discharge portion 25 for punching chips provided on the side portion 24 of the bottomed tubular body 21 is composed of a tubular body inclined downward from the side portion 24, and the lower edge of the base of the discharge portion 25 is It is located at a height near the bottom portion 22 of the bottom tubular body 21. Also,
The tip of the discharge part 25 is connected to the hollow pole 10 of the punch tool stand via the bellows body 40. Next, the operation of the above-mentioned device will be described. First, as shown in FIG. 5, the punch tool 6 is attached to the hollow pole 10 of the punch tool stand, and the punch tool fixing means 8 is provided.
And the drilling waste treatment device of the present invention is attached.

Next, when the rotary blade is used, the rotary blade 33 is fitted from the rear end of the drill bit 7, and when the rotary blade is not used, the drill bit 7 is directly inserted from the rear end into the drill dust processing device. Then, as shown in Fig. 1, drill chuck 1
Attach to 4. Next, the hollow pole 10 of the punch tool stand
When the tip of the drill bit 7 abuts against the surface to be drilled such as the ceiling, the periphery of the drill bit 7 is completely covered by the bottomed cylindrical body 21 and the bellows body 27. In this state, the perforation tool 6 is activated by remote control, and the drill bit 7 is rotated to start perforation. During drilling, the drill bit 7 can be smoothly immersed in the surface to be drilled due to the contracting action of the bellows body 27.

Drilling waste generated by drilling is introduced from the bellows body 27 into the bottomed cylindrical body 21. The introduced drilling chips fall onto the bottom portion 22 of the bottomed tubular body 21, but the drill bit 7
Is smoothly moved to the surroundings due to the vibration and the tilting effect caused by the rotation, and is discharged from the discharge part 25 and dropped into the hollow pole 10 to be collected. When the rotary blade 33 is used, the rotary blade 33 rotates together with the rotation of the drill bit 7 to forcibly repel and move the perforated scraps of the bottom portion 22 of the bottomed tubular body 21 to the periphery. The punching dust is discharged from the discharge portion 25 more smoothly and quickly.

After the boring of a predetermined depth is completed in this way, the hollow pole 10 of the punch stand is lowered to extract the drill bit 7 from the surface to be perforated. Then, it moves to another drilling place and the above operation is repeated. The hollow pole 10
The perforated scraps collected inside can be configured to be appropriately discharged, for example, by providing an opening / closing type discharge door on the side near the bottom and checking the internal storage state. Further, it is possible to prepare another collecting container or the like and discharge it to the hollow pole 10 without dropping the perforated scraps from the discharge part 25 into the hollow pole 10.

[0018]

EFFECTS OF THE INVENTION Since the drill dust processing apparatus of the present invention is constructed as described above, it is possible to efficiently and efficiently without scattering the drill dust generated during drilling, though it has an extremely simple structure and is easy to handle. It can be collected smoothly.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a state in which the punch dust processing apparatus of the present invention is combined with a punch tool.

FIG. 2 is a partially enlarged cross-sectional view of a bottomed cylindrical body 21 used in the drilling waste treatment device shown in FIG.

FIG. 3 is a partially enlarged cross-sectional view showing another example of a bottomed cylindrical body 21 that can be used in the drilling waste treatment device of the present invention.

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

FIG. 4 is a rotary blade 3 used in the drilling waste treatment device shown in FIG.
3 is a partially enlarged perspective view of FIG.

FIG. 5 is an exploded perspective view showing a procedure for attaching the drill bit 7 and the rotary blade 33 to the drilling waste treatment device of the present invention.

FIG. 6 is a partial cross-sectional view showing a drilling waste processing device previously invented by the applicant.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom part 2 Insertion hole 3 Side part 4 Discharge part 5 Bottomed cylindrical body 6 Punch tool 7 Drill bit 8 Punch tool fixing means 9 Punch tool fixing means 10 Hollow pole 11 Attachment part 12 Opening part 13 Bellows body 14 Drill chuck 15 Opening part 20 Punching waste processing device 21 Bottomed cylindrical body 22 Bottom part 23 Insertion hole 24 Side part 25 Discharge part 26 Opening part 27 Bellows body 28 Inclined surface 29 Annular protrusion 30 Bottom surface 31 Chuck cover 32 Steel ball 33 Rotor blade 34 Main body 35 Blade 36 blade 37 Through Hole 38 Small Diameter Hole 39 Large Diameter Hole 40 Bellows

Claims (1)

[Claims] 1. A bottomed cylindrical body 21 having a drill bit insertion hole 23 in the center of the bottom 22 and a side 24 having a discharge portion 25 for drilling chips, and an opening 26 of the bottomed cylindrical body 21. A drill bit having an accordion body 27 extending in the axial direction, the drill bit 7 of a piercing tool being inserted through the insertion hole 23 of the bottomed cylindrical body 21 into the accordion body 27 so as to cover the periphery thereof when piercing. In the processing apparatus, the bottom surface 22 of the bottomed cylindrical body 21 has an annular inclined bottom surface 2 centered on the insertion hole 23.
8 is formed.