JP2002361505A - Drilling device of tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of chips and to prevent punched cut pieces from dropping in a tank at the time of drilling specified points of the tank. SOLUTION: This drilling device of the synthetic resin made tank is constituted to drill a specified hole 14 on the tank 11 by a drill unit 2 by arranging the drill unit 2 on the tank 11 so as to drill the hole 14 to install various parts on the specified points of the tank 11 placed on a pedestal 12 and is constituted by mounting a screw 16 doubly working as a center of rotation of a rotary blade 17 on a chuck 7 provided on a lower end part of the drill unit 2, providing the rotary blade 17 with a specified distance from the screw 16, screwing the screw 16 at a specified point of the tank 11 by rotation of a rotary shaft 3 and holding the punched cut pieces 15 by the screw 16 at the time of drilling the hole 14 on the tank 11 while rotating the rotary blade 17 with the screw 16 as its rotational center.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank drilling device, and more particularly to a device for drilling a predetermined hole in a fuel tank of an automobile or the like. The present invention relates to a synthetic resin tank drilling device configured not to fall.

[0002]

2. Description of the Related Art A conventional tank drilling apparatus 1 will be described with reference to FIGS. In the figure, the drilling device 1 includes a drill unit 2, a pulley 4 is mounted on a rotary shaft 3 provided at the center of the body of the drill unit 2, and A belt 6 is suspended between a pulley 4a attached to a shaft, the rotation of the motor 5 is transmitted to the rotating shaft 3, and a drill 7 is attached to a chuck 7 attached to the lower end of the rotating shaft 3. 8 and byte 9
The upper end of the frame body 10 with the attached is chucked, and the rotational drive of the motor 5 is transmitted to the frame body 10 and transmitted to the drill 8 and the cutting tool 9 rotating about the drill 8 as a rotation center. Is configured.

On the other hand, a tank 11 to be drilled for mounting predetermined components such as a gauge and a sensor is generally formed of a synthetic resin. The tank 11 in the illustrated example is mainly used as a fuel tank of an automobile. In the figure, a tank 11 is fixed on a pedestal 12 by fixtures 13, 13.
Therefore, a hole 14 having a predetermined diameter is formed in a predetermined location of the tank 11, and the diameter of the hole 14 is arbitrarily adopted depending on a component to be mounted. Naturally, the predetermined diameter is determined by the distance between the drill 8 and the cutting tool 9.

Therefore, first, as shown in FIG.
In order to drill the hole at a predetermined location of the tank 11 fixed on the upper surface of the tank 2, the drill 8 is placed at the center of the predetermined location.
, And the rotating shaft 3 of the drill unit 2 rotates based on the rotational driving of the motor 5.
If so, the drill 8 and the cutting tool 9 chucked on the chuck 7 attached to the rotating shaft 3
The drill unit 2 descends while the frame body 10 on which is mounted is rotated. At this time, the drill 8 drills the center position of the hole 14 to be drilled and holds the rotation center of the cutting tool 9. Further, the cutting tool 9 drills a predetermined hole 14 in the tank 11 while surrounding the drill 11 with the drill 8 as a center of rotation.

[0005]

The prior art described above uses a byte 9
In order to take the center of rotation, a central portion of a hole-equivalent portion is drilled with a drill 8, and a hole 14 is drilled around the drill 8 while rotating around the drill 8. 7, the chips V, V... By the drill 8 fall into the tank 11 during the rotary drilling operation of the drill 8, and the chips V, V when the drill 9 drills. , V ... scatter and pollute the surrounding environment. Further, a cut piece corresponding to the hole cut out by the cutting tool 9 falls into the tank 11.

However, it is extremely difficult to remove the chips V, V... And the cut pieces 15 that have fallen into the tank 11 from the inside of the tank 11, and it is not easy to clean the inside of the tank 11. Therefore, when drilling a hole at a predetermined location in a tank, a technical solution to be solved in order to prevent generation of chips as much as possible and to prevent a cut piece from falling into the tank. Challenges arise,
An object of the present invention is to solve the problem.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been proposed to achieve the above object, and has a hole for mounting various components at a predetermined position of a tank mounted on a pedestal. A drill unit is disposed on the tank to drill a predetermined hole in the tank with the drill unit. The drill unit is provided at the lower end of the drill unit. A screw that also serves as the rotation center of the rotary blade is attached to the chuck that is provided, the rotary blade is provided at a predetermined distance from the screw, the screw is screwed into a predetermined location of the tank by rotation of a rotating shaft, and further, When a hole is drilled in the tank while rotating the rotary blade around the screw as a center of rotation, a tank punching device comprising a cut-out piece held by the screw, and the rotary blade is a double-edged Consisting of a tongue There is provided a drilling apparatus.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. For the sake of convenience, the same reference numerals are given to the components common to the conventional example and the drilling device 1 'of the present invention, and the description thereof will be omitted.

FIGS. 1 to 5 show a procedure for drilling a hole 14 at a predetermined position of a tank 11 to be drilled. The present invention adopts a screw 16 instead of the conventional drill, and furthermore, FIG. Instead of the conventional cutting tool, a rotary blade 17 is adopted. That is, conventionally, when drilling a metal plate or a tank 11 made of this kind of synthetic resin, a bite is used as a fixed idea, but when drilling with this bite, as shown in FIG. The chips V are scattered and pollute the surrounding environment. Therefore, the present invention adopts a rotary blade 17 formed by a knife-like blade instead of the cutting tool. Thus, both rotary blades 17 are mainly used. In that case, the drilling operation can be performed efficiently.

Further, as described above, the present invention adopts the screw 16 instead of the drill, so that the screw 16
When the screw 15 is screwed into the predetermined portion, the cut piece 15 cut out by the rotary blade 17 by the biting of the screw 16 does not fall into the tank 11.

A procedure for drilling a hole 14 in a predetermined location of the synthetic resin tank 11 using the drilling device 1 'of the present invention will be described with reference to the drawings. As shown in FIG.
The drilling device 1 ′ of the present invention faces the tank 11 fixed on the pedestal 12 by 3 and 13. As described above, a screw 16 is used instead of the conventional drill.
Is adopted, the lower end of the screw 16 is brought into contact with the center point of the drilled portion of the tank 11. At this time,
The lower end surface of the rotary blade 17 may be disposed so as to be slightly above the lower end surface of the screw 16. In such a case, as shown in FIG.
When the drill 16 is rotated by the drive of the motor 5 and the drill unit 2 descends, first, the screw 16
Into a predetermined place. Further, when the drill unit 2 descends while the rotating shaft 3 of the drill unit 2 rotates, the rotary blade 17 cuts out a portion corresponding to the hole 14 while surrounding the screw 16 as a rotation center. become. At this time, a cut piece 1 cut out as shown in FIG.
5 is held by the screw 16 by screwing of the screw 16, and therefore does not fall into the tank 11. Also, unlike the conventional example, the screw 16 and the rotary blade 1 described above are used.
., The chips V, V... Do not fall into the tank 11 or pollute the surrounding environment.

The cut piece 15 thus cut off is removed upward from the position of the hole 14 opened while being held by the screw 16, as shown in FIG.
By moving the drill unit 2 to the side,
The cut pieces 15 are carried to a place away from the position of the tank 11. Further, as shown in FIG. 5, the cutting piece 15 is detached from the screw 16 by a means such as rotating the screw 16 holding the cutting piece 15 in a reverse direction, and the cutting piece 15 is discharged via a discharge plate 18. 15 can be discharged.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0014]

As described in detail in the above embodiment, the present invention adopts a screw in place of a drill used in a conventional tank drilling device, and further uses a knife-like rotary instead of a cutting tool. Since the blade is used, first, a screw is screwed into a predetermined portion of the tank, and then the rotary blade is rotated around the screw to cut out a predetermined portion of the tank, and a predetermined hole is formed. Be executed. At this time, at the time of the screwing operation of the screw and the rotational cutting operation of the rotary blade, unlike the case of the conventional drill or cutting tool, almost no chips are generated, so that contamination of the surrounding environment is avoided,
Further, since the cut piece cut out by the rotary blade is also held by the screwing of the screw, the cut piece does not fall into the tank after being cut out.
When the chips and chips fall into the tank as in the conventional example, it is extremely difficult to clean the chips and chips from the tank. Cleaning work is not required.

Further, the cut piece is carried to the side of the tank while being held by the screw, and can be removed, so that continuous processing becomes possible. Therefore, it is suitable for mass production.
This is an invention that has a truly significant effect, such as contributing to cost reduction.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is a front view when a punching device is arranged on a tank upper surface.

FIG. 2 shows a state in which a screw of the drilling device of FIG. 1 is screwed into a predetermined portion of a tank, and a hole is formed in the tank by a rotary blade rotating about the screw as a rotation center. Partial cutaway front view.

FIG. 3 is a partially cutaway front view showing a state in which a cut piece is taken out of the hole after drilling is completed in the state of FIG. 2;

FIG. 4 is a partially cutaway front view showing a state in which the cut piece is being carried out of the tank while being held by screws from the state of FIG. 3;

5 is a partially cutaway front view showing a state in which a cut piece is removed from a screw from the state of FIG. 4 and discharged.

FIG. 6 is a front view showing a conventional example, showing a state in which a drilling device is arranged on the upper surface of a tank.

FIG. 7 is a partially cutaway front view showing a state in which a hole is formed in a tank by a conventional drilling device.

[Explanation of symbols]

 Reference Signs List 1 'drilling device 2 drill unit 3 rotating shaft 7 chuck 11 tank 12 pedestal 14 hole 15 cutting piece 16 screw 17 rotating blade V chip

Claims (2)

[Claims] 1. A drill unit is provided on a tank mounted on a pedestal so as to drill holes for mounting various components at predetermined locations on the tank. In a tank drilling device configured to drill a predetermined hole, a screw serving as a rotation center of a rotary blade is attached to a chuck provided at a lower end of the drill unit, and a predetermined distance from the screw is set. The rotary blade was provided at a distance, the screw was screwed into a predetermined portion of the tank by rotation of a rotating shaft, and a hole was formed in the tank while rotating the rotary blade with the screw as a center of rotation. The cutout piece is held by the screw at the time. 2. The tank drilling device according to claim 1, wherein said rotary blade comprises a double blade.