JPH0115499Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for polishing the surface of a coating applied to an automobile or the like.

Conventionally, the final polishing of the paint surface has been done by applying a liquid abrasive to the paint surface and then polishing it, which is time consuming and difficult to work with. There were drawbacks such as applying more abrasive than necessary or applying too little abrasive. Furthermore, conventional polishing equipment is equipped with a manual operation handle, but because it is operated with one hand, the pressing force against the coating surface is weak, making polishing work time-consuming. and an on-off valve for supplying liquid abrasive, it is difficult to operate these valves with one hand, it is impossible to operate both valves at the same time, and there is a possibility that mistakes may be made in the operating procedure. There were some problems, such as:

In order to eliminate these drawbacks, the present invention makes it possible to easily polish the painted surface while holding it with both hands, and rotates the polishing plate with one hand.
The present invention provides a polishing device characterized in that it is possible to perform polishing finishing while adjusting the supply of liquid abrasive with the other hand.

The embodiments of the present invention will be explained with reference to the drawings: 1
is a cylindrical main body, in which a known air motor 2 rotated by vanes 2a is installed in the upper part, and the rotary drive shaft 3 is rotatably supported in the lower part of the main body 1 via bearings 4, 4. The gear 7 formed at the insertion end of the upper center hole 6 of the rotating shaft 5 is meshed with an intermediate gear 9 supported by the vertical shaft 8 on one side of the rotating shaft 5. is meshed with a fixed internal gear 10 fixed to the inner peripheral surface of the main body 1 to transmit the rotation of the rotary drive shaft 3 to the rotary shaft 5. Reference numeral 11 denotes a rotating disk whose center portion is fixed to the projecting end of a rotating shaft 5 projecting downward from the center of the lower end surface of the main body 1.

Reference numeral 12 designates a donut-shaped polishing disc made of a soft fiber material such as wool buff, and has female and male velvet type fastener pieces 13 and 14 attached to its upper surface and the lower surface of the rotary disc 11 to be able to engage with each other. . 12a is a central hole of the polishing disk 12.

Reference numerals 15 and 16 denote a pair of left and right horizontal handle bodies whose inner ends are respectively fixed to mounting protrusions 1a and 1b protruding from both sides of the main body 1; An introduction passage 17 and a liquid abrasive introduction passage 18 made of a flexible tube are disposed, and an air discharge passage 19 is disposed in the other handle body 16, and the discharge passage 19 is connected to the outer end of the handle body 16. The opening communicates with the outside. Further, the air introduction passage 17 is connected to a pipe joint 2 attached to the outer end of the handle body 15.
0 to a compressed air supply (not shown);
The liquid abrasive introducing passage 18 communicates with the flexible pipes 18a and 18b that form the passage and extends outward from the inner and outer opening ends of the handle body 15, respectively, and the outwardly extending pipe 18b is used to supply the liquid abrasive. It is in communication with a power source (not shown). In addition, this liquid abrasive is supplied by pressure feeding, self-weight feeding, etc.
It may be carried out by any means such as a tank method, an aerosol method, or a cassette method.

Reference numeral 21 denotes a through hole vertically bored in the mounting protrusion 1a of the main body 1, which is a continuous part with one handle body 15;
The upper chamber 21 is opened by the opening/closing valve 22 of the through hole 21.
The inner end of the air introduction passage 17 is communicated with the lower chamber 21b, and the upper chamber 21a is communicated with the air motor 2 through a passage 23 provided in the main body 1. In addition, the opening/closing valve 22 normally closes the lower opening of the upper chamber 21a by a spring 24 pressurized in the lower chamber, and furthermore, the valve shaft 22a is made to protrude upward from the surface of the mounting protrusion 1a. There is. Reference numeral 25 designates an operating lever 26 whose base end is pivotally mounted to the inner end of the upper surface of the mounting projection 1a so as to be movable up and down, and whose lower surface is brought into contact with the upper end of the valve shaft 22a.

Reference numeral 27 denotes a liquid abrasive supply hole bored in the other mounting protrusion 1b of the main body 1, which is a part connected to the other handle body 16, and is opened up and down by the opening/closing valve 28 in the same way as the through hole 21 described above. Divided into chambers 27a and 27b,
A pipe 18a extending outward from the inner end of the one handle body 15 is connected and communicated with the lower end of the lower chamber 27, and the upper chamber 27a is connected to the rotating shaft 5 through an abrasive passage hole 29 provided in the main body 1. The jet hole 30 is connected to a jet hole 30 provided vertically in the center.
The lower end nozzle portion 31 is opened downward toward the center hole 12a of the donut-shaped polishing disk 12 from the lower surface of the shaft end. In addition, a plurality of branched jetting holes (not shown) are provided from the lower end of the jetting hole 30 to the rotary disk 11 side, and these branched jetting holes are opened downward from the lower surface of the inner periphery of the rotary disk 11. Liquid abrasive may be ejected from a nozzle.

The opening/closing valve 28 normally closes the lower end opening of the upper chamber 27a by a spring 32 pressurized in the lower chamber, and furthermore, the valve shaft 28a
The mounting protrusion 1b is made to protrude upward from the upper surface thereof, and an operation button 33 is fixed to the protruding end.

Reference numeral 34 denotes an exhaust passage provided in the main body 1, which allows the air that has driven the air motor 2 to be led out to the exhaust passage 19.

To describe how the polishing device configured as described above is used, an operator grasps the handles 15 and 16 with both hands, lifts the main body 1, and attaches it to the rotating disk 11 on the coated surface of an automobile or the like. After lightly pressing the polished polishing plate 12, if you press the operating lever 25 with your finger holding one handle body 15, the valve shaft 22b moves down against the force of the spring 24, opening the on-off valve 22, and introducing Compressed air passes through the passage 17 to the through hole 21,
Air is forced into the air motor 2 through the passage 23, and the air motor 2 is rotated to rotate the rotary disc 11 and polishing disc 12 fixed to the lower end of the rotary shaft 5 from the rotary drive shaft 3 via a gear train. The air that rotates the air motor 2 flows out from the exhaust passage 34 to the exhaust passage 19 in the other handle body 16 and is exhausted to the outside.

On the other hand, when the operation button 33 is pressed with the hand holding the other handle body 16, the valve shaft 28a moves downward and the opening/closing valve 28 is moved downward.
is opened, and the liquid abrasive enters the main body 1 from the introduction passage 18 provided in one handle body 15 through the pipe 18a.
The liquid abrasive is forced to flow from the inner through hole 29 to the jet hole 30, and is sprayed onto the coating surface from the nozzle part 31 through the central hole 12a of the polishing disc 12.

The sprayed liquid abrasive is rubbed against the coating surface by a rotating polishing disk 12 to polish the coating surface.

At this time, only the necessary amount of liquid abrasive is intermittently spouted from the nozzle 31 while appropriately opening and closing the on-off valve 28 using the operation button 33.

As described above, in the present invention, the rotary shaft 5 rotated by the air motor 2 provided in the main body 1 is made to protrude from the lower end of the main body 1, and the polishing plate 12 is attached to the protruding end.
In the polishing apparatus, horizontal handle bodies 15 and 16 are integrally provided on both sides of the main body 1, and an air introduction passage 17 for rotationally driving the air motor 2 is provided in one of the horizontal handle bodies 15. A liquid abrasive introduction passage 18 is provided, and the other horizontal handle body 1
An air discharge passage 19 for rotationally driving the air motor 2 is disposed in the air motor 6, and communicates with the liquid abrasive introducing passage 18 through a pipe 18a in the connecting portion between the other handle body 16 and the main body 1. A supply hole 27 is provided, an on-off valve 28 for liquid abrasive is disposed in the supply hole 27, and the supply hole 27 is connected to the ejection hole 30 formed in the rotation shaft 5 of the air motor 2 through the on-off valve 28. At the same time, the jet hole 30 is opened downward from the center hole 12a of the polishing plate 12, and an air opening/closing valve 22 is disposed in the air introduction passage 17, and the valve shaft 22a of this opening/closing valve 22 and This relates to a polishing device characterized in that the valve shaft 28a of the opening/closing valve 28 for the liquid polishing agent is made to protrude upward from the upper surfaces of both horizontal handle bodies 15, 16, respectively, so that external opening/closing operations can be performed manually. Since there are horizontal handle bodies 15 on both sides of the main body 1,
16 is integrally provided, the horizontal handle body 1
5, 16 can be gripped with both hands to perform polishing work in a stable state and with a strong pressing force, and the interior of these horizontal grips 15, 16 can be used to introduce and discharge air for rotational drive through passages 17, 19. Since the liquid abrasive introduction passage 18 is provided, the entire device can be constructed compactly and handling and operation can be performed smoothly. ,18
Since the air and abrasive supply pipes are connected to only one horizontal handle body 15 by providing a Moreover, one horizontal handle body 15 side is provided with an opening/closing valve operating section for the air introduction passage 17 for driving the air motor, and the other horizontal handle body 16 is provided with an opening/closing valve operating section for the liquid abrasive supply hole 17. Therefore, while holding the horizontal handles 15 and 16 with both hands and moving the main body 1, the air motor 2 can be rotated to polish the coating surface with the polishing plate 12. The liquid abrasive can be supplied or stopped with the other hand freely and accurately, and only the necessary amount of liquid abrasive can be sprayed from the nozzle portion 31 onto the coating surface. This makes it extremely economical and allows beautiful polishing to be performed efficiently.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view thereof, and FIG. 2 is a sectional view taken along the line A-A in FIG. 1. 1 is the main body, 2 is the air motor, 5 is the rotating shaft, 1
2 is a polishing disk, 15 and 16 are horizontal handle bodies, 17 is an air introduction passage for rotational driving, 18 is a liquid abrasive introduction passageway, 19 is an air discharge passage for rotational driving, 22, 28
is an opening/closing valve, 22a and 28a are its valve shafts, 27
30 is a supply hole, 30 is a jet hole, and 31 is a nozzle portion.

Claims (1)

[Scope of utility model registration request] In a polishing apparatus, a rotating shaft 5 rotated by an air motor 2 provided in a main body 1 projects from the lower end of the main body 1, and a polishing plate 12 is attached to the projecting end. 1
5 and 16 are integrally connected, and one horizontal handle body 1
5, an air introduction passage 17 and a liquid abrasive introduction passage 18 for rotationally driving the air motor 2 are arranged, and an air exhaust passage 19 for rotationally driving the air motor 2 is arranged in the other horizontal handle body 16. A supply hole 27 that communicates with the liquid abrasive introduction passage 18 through a pipe 18a is provided in the continuous portion between the other handle body 16 and the main body 1, and a liquid abrasive opening/closing valve 28 is provided in the supply hole 27. This on-off valve 2
8, the supply hole 27 is communicated with an ejection hole 30 formed in the rotating shaft 5 of the air motor 2, and the ejection hole 30 is opened downward from the center hole 12a of the polishing plate 12, and further, An air opening/closing valve 22 is disposed in the air introduction passage 17, and a valve shaft 22a of this opening/closing valve 22 and a valve shaft 28a of the liquid abrasive opening/closing valve 28 are connected upwardly from the upper surfaces of both horizontal handle bodies 15, 16, respectively. A polishing device characterized in that the polishing device is protruded from the top and can be opened and closed manually.