JP3131682B2 - Liquid abrasive application equipment for polishing machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to polishing of metals and nonmetals,
In particular, the present invention relates to a liquid abrasive application device for a polishing machine used for polishing a resin-coated surface of an automobile or the like.

[0002]

2. Description of the Related Art Conventionally, in a buffing operation for imparting smoothness or specular gloss to a painted surface of an automobile body or the like, a flowable liquid abrasive such as a compound containing wax or abrasive particles is applied to the surface of a workpiece. It was applied with a sponge, brush, or spray spray, and then polished with a polishing machine. I had to do refill application. This coating operation was performed many times until the desired skin was obtained, and each time the operation of the polishing machine was stopped.

[0003]

The problem to be solved is that in the past, the operation of the polishing machine was stopped every time and the abrasive was applied, so that the efficiency was poor and the work time was greatly lost. An object of the present invention is to make it possible to apply an abrasive to a surface to be polished while operating a polishing machine without stopping the operation of the polishing machine.

[0004]

A liquid abrasive application apparatus for a polishing machine according to the present invention is provided with a passage through which an abrasive passes through all or a part of a drive shaft driven by an electric or air motor, and stores the abrasive. A cartridge is detachably connected to the passage, and a cap is attached to the housing case so as to cover the entire cartridge.In order to pump the abrasive inside the cartridge by compressed air, compressed air is supplied to the cap via a switch. It is intended to be connected. Also, a front opening of the cartridge for storing the abrasive is connected to the passage, and the abrasive in the cartridge is pressure-fed through the bottom of the cartridge by compressed air. Also, compressed air is connected to the cap via a switch. Further, an exhaust valve is provided in a passage of compressed air that connects the switch and the cartridge. The method of moving the drive shaft is not limited to a particular one such as forward rotation, eccentric rotation, swinging, or vibration. The drive shaft includes not only a rotating shaft of a motor but also a drive shaft driven via transmission means such as gears.

[0005]

The liquid abrasive application device of the polishing machine according to the present invention comprises:
Use as follows: In the mirror polishing work of the painted surface,
First, a polishing member 2 made of a polyurethane sponge having a central hole 3 formed in a central portion is mounted on a drive shaft 7 of the main body 1 of the polishing machine. Next, the cylindrical cap 2 provided on the head portion
5 and the cartridge 19 filled with the liquid abrasive 24
And the motor case 15 is fitted to the front side opening 20 and connected to the opening 18 of the drive shaft 7. Then, the cap 25 is attached to the housing case 29 from behind the cartridge 19, and compressed air is connected to the joint 35. In this state, if the switch 31 is input with the polishing surface 4 of the polishing member 2 facing the workpiece, the compressed air is
2 and into the inside of the cap 25, the cartridge 1
The liquid abrasive 24 is forced into the passage 9 of the drive shaft 7 by pressing the bottom body 22 behind the 9. Then, the liquid abrasive 24 is further urged by the narrow passage 9, pushes and opens the sphere 10 of the valve 13 provided in the passage 9 and opened only in one direction, and squirts vigorously from the nozzle 14 at the tip to apply it to the workpiece. Be worn.
When the switch 31 is turned off, the valve 13 is closed and the ejection of the abrasive is stopped. Since the compressed air on the rear side of the cartridge remains in the passage 32, the necessary amount can be quickly increased at any time, regardless of whether the abrasive member is rotating sideways or upward with respect to the workpiece. Can be applied to The application amount at this time is controlled by the pressure control valve 33. The nozzle 14 can be replaced with one having various shapes depending on the type or use of the liquid abrasive or the abrasive member to be used. For example, liquid wax may be directly applied to the surface to be polished, or the polishing member may be impregnated by changing the discharge direction of the nozzle. Further, if the polishing member and the nozzle are integrated, it can be applied to various uses. For example, a plurality of discharge holes for a liquid abrasive are formed in a roll brush for polishing the inner surface of a pipe. When taking out the cartridge 19 by using up the liquid abrasive, the switch 31 is turned off, the exhaust valve 34 is opened, the residual pressure inside the cap 25 is discharged to the outside, and then the cap is opened. There is no recoil due to internal pressure. The cartridge may be replaced with a new one containing the liquid abrasive, or only the liquid abrasive may be refilled. When refilling the liquid abrasive, the cartridge 19 is removed and the front opening 2 is removed.
The injection may be performed after pushing the bottom body 22 back to the end of the cartridge 19 from zero. According to the present invention, since the container containing the liquid abrasive and the polishing machine are integrated, it is simple,
There is no mixing of dust and dirt, and the lid is not released, so that the abrasive does not dry and harden. Therefore, it is possible to prevent the occurrence of scratches caused by scratches caused by the storage state of the conventional liquid abrasive. In addition, since the abrasive can be discharged even when the polishing member is rotating, the operation of the polishing machine does not need to be stopped during the operation as in the prior art.
This is an apparatus that can apply an abrasive at any time and can shorten the working time. Further, by replacing the polishing member or the liquid abrasive according to the application, it can be applied not only to the painted surface but also to any polishing of metal and nonmetal.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a sectional view showing the structure and operation of this embodiment. 1
Is a main body of a polishing machine driven by an air motor, and a cartridge described later containing an abrasive is provided in a head portion. Reference numeral 2 denotes a polishing member, which has a polishing surface 4 with a central hole 3 formed in the center of a disc-shaped sponge body. Polishing member 2
Is mounted on a drive shaft 7 of a motor 6 which is eccentrically rotated via a pad 5 provided with a hook-and-loop fastener.
Reference numeral 8 denotes a weight for stabilizing rotation. The drive shaft 7 is
A passage 9 having a hollow shaft through which a liquid abrasive described later passes.
A valve 13 is provided in the passage 9 so that the sphere 10 is pressed by an appropriate tension of the spring 11 to be in close contact with the O-ring 12 to be closed and open only in one direction. A nozzle 14 is provided at the tip of the drive shaft 7, and the nozzle 14 is attached with a screw so that the nozzle 14 can be replaced with one having various shapes depending on the type or use of the liquid abrasive or the abrasive member. Further, the drive shaft 7 is fastened to a motor case 15 on the upper side of the motor 6 by a retainer 17 having a sealing property via a bearing 16, and an opening 18 is provided therein. Reference numeral 19 denotes a cylindrical cartridge which is connected to the opening 18 of the drive shaft 7.
Insert the front opening 20 into the convex portion of the motor case 15
A slidable bottom body 22 fitted through a ring 21 and inserted through a rear opening 23 forms a bottom portion, and is filled with a liquid abrasive 24. Reference numeral 25 denotes a cap, and a groove 27 is provided radially from the center on the inner bottom wall 26. When the cap 25 is put on the cartridge 19 and attached to the housing case 29 via the O-ring 30 by screws. At the same time, the bottom wall 26 presses the peripheral portion 28 to fix the cartridge 19. In order to introduce compressed air into cap 25, cap 2
An appropriate distance is provided between the inner diameter of the cartridge 5 and the outer diameter of the cartridge 19, a passage 32 communicating with the groove 27 and the switch 31 is formed, and the compressed air pressure control valve 33 and the switch 31 are integrally mounted. The pressure control valve 33 is not necessarily integrated with the switch 31 but may be a separate body. 34 is a cap 2
5 is an exhaust valve. When the exhaust valve 34 uses up the liquid abrasive during the operation and replaces the cartridge 19, the pressure by the compressed air is applied to the bottom body 22, and it is dangerous to open the cap 25 forcibly in this state. This is for discharging the compressed air remaining inside the cap before opening. Then, in order to remove the residual pressure in the cap 25, the compressed air connected to the joint 35 is removed, and then the switch 31 is opened, which can be removed, but this is troublesome. Therefore, even if compressed air is connected to the joint 35, the residual pressure can be easily discharged to the outside simply by operating the exhaust valve 34. In this embodiment, the compressed air for pressing the bottom body 22 is introduced into the cap from the switch 31 via the passage 32. However, instead of the passage 32, a tube 36 is extended from the switch 31 and introduced. May be configured. Further, the cartridge may be mounted in a screw type, and a cap connected to the switch via a tube may be attached to a rear portion of the cartridge. Of course, also in this case, it is desirable to provide an exhaust valve for discharging the residual pressure of the compressed air.
Further, in addition to this example, a configuration may be adopted in which the cartridge is provided in any of the grinder bodies and is connected to the passage 9 of the drive shaft in some manner.

[0007]

Since the present invention is as described above, a step of applying a liquid abrasive to a workpiece in a polishing operation,
A series of operations using a single tool, without stopping the operation of the polishing machine, the above-mentioned steps such as the step of operating and polishing the polishing machine, and the step of temporarily stopping the operation of the polishing machine and replenishing the polishing material. This is extremely effective in reducing the working time in a polishing operation that requires a repetitive operation.

The present invention can be variously modified in addition to the above, and all of them are included in the present invention.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the structure and operation of the present embodiment.

[Explanation of symbols]

 7 ... Drive shaft 9 ... Abrasive material passage 13 ... Valve 14 ... Nozzle 19 ... Cartridge 24 ... Abrasive material 25 ... Cap 29 ... Housing case 31 ... Switch 32 ... Compressed air passage 33 ... Compressed air pressure regulating valve 34 ... Exhaust Valve 35: Joint for connecting compressed air

Claims (3)

(57) [Claims] An electric or air motor driven drive shaft is provided with a passage through which an abrasive passes, a cartridge for storing the abrasive is removably connected to the passage, and a cap is attached to the housing case covering the entire cartridge. And
A liquid abrasive application device for a polishing machine, wherein compressed air is connected to the inside of the cap via a switch in order to pressurize the abrasive inside the cartridge by compressed air. 2. An electric or air motor driven drive shaft is provided with a passage through which the abrasive passes, and a front opening of a cartridge for storing the abrasive is connected to the passage, and the abrasive in the cartridge is compressed by compressed air. A liquid abrasive application device for a polishing machine, wherein compressed air is connected via a switch to a cap attached to a rear opening of the cartridge for pressure feeding through a bottom of the cartridge. 3. An apparatus for applying a liquid abrasive to a polishing machine according to claim 1, wherein an exhaust valve is provided in a passage of compressed air which communicates between the switch and the cartridge.