JPS5923948B2 - sander cooling system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device for the purpose of circulating and consuming a coolant and suppressing frictional heat when grinding a workpiece with a grinder.

Let's take an example of a conventional cooling device.

A method in which a water tank is installed higher than the whetstone, and water is poured into the whetstone through a pipe using the pressure of the drop. A method of delivering water to the center of a disc-shaped grindstone and distributing it by centripetal force. How to circulate cooling water using a vacuum tank, etc. The water injection capacity changes depending on the amount of water in the tank, and the waste water after use often drips away, becoming a source of pollution and requiring frequent replenishment of the tank. Careful attention must be paid to cooling water management. The method of circulating cooling water using mechanical pressure has a complicated mechanism and operation, is prone to failures, and is expensive. In the present invention, a constant pressure is maintained by the buoyancy force of the double water tank and the expansion and contraction of the air tank, and the cooling water is circulated by utilizing the circular force of the grindstone, so that an even amount of water is poured onto the surface of the grindstone. To provide a cooling device which separates dust and clean water in the process of the work, and eliminates the drawbacks of the conventional cooling device. Embodiments of the present invention will be described with reference to the drawings.

The internal water tank 3 is buoyed by the controlled water 17 stored in the external water tank 2, and is connected to the air tank 4 with ventilation holes between them, and the cooling water 18 is fed from the bottom of the internal water tank 3. A water pipe 5 and a drain pipe 6 are connected to the grinding machine, and the water pipe 5 is installed at a position on the surface of the grinding wheel 8 fitted on the shaft T of the grinding machine, and is installed in the receiving tray of the grinding stone 8. In this configuration, a drain pipe 6 is connected to a waste water tank 11. The above configuration will be explained in more detail.

The external water tank 2, which is loosely fitted to a support 13 fixed on the machine base 1, is placed on an adjustment screw 12 that can be raised and lowered freely, and the inner surface of the external water tank 2 and the inner water tank 3 are The structure of the internal water tank 3, which is prevented from moving by a rod 14 on the outer surface, is that a shelf-shaped partition plate 15 is provided in the middle layer where cooling water 18 is stored, and a depression-shaped in one corner of the opposite bottom. A dust collection tank 16 is installed, and a water pipe 5 is installed on the upper wall of the partition plate 15.
A drain pipe 6 is connected to the lower wall by a soft pipe formed with pleats so that it can expand and contract, and the water pipe 5 and drain pipe 6 pass through the external water tank 2 and are connected to the polishing machine. The structure of the air tank 4 having an open bottom on the bottom surface of the external water tank 2 is similar to that of the internal water tank 3.
An air tank 4 made of a soft material with folds formed thereon that can be expanded and contracted into a three-dimensional surface of an appropriate size and having a planar area equal to the planar area of the internal water tank 3 is
It is a configuration that is linked to. As shown in the figure, the grindstone 8 is slid on the almost horizontal contact surface from the center point of the grindstone 8 to the circumferential side while moving from one end of the cutter (workpiece material) to the opposite end.
The direction in which the cutter moves is hereinafter referred to as the grinding line 19.

A grindstone cover 9 is connected to a water pipe 5 installed at the lower surface of the grindstone 8, and a sponge 10 is provided so as to lightly contact the surface from the opposite end, that is, from the upper circumferential side of the grindstone 8, and directly under the sponge 10, which is used for grinding. A drain pipe 6 is connected to the bottom of a waste water tank 11 installed in the tray of the grindstone 8 on which the wire 19 is installed. The proper way to connect the grinding wheel 8 installed on the machine stand 1 and the external water tank 2 is to operate the adjustment screw 12 to adjust the water level of the regulating water 17 to a position where the lower part of the periphery of the grinding wheel 8 is slightly submerged in water. The circulation status of the cooling water 18 used to rotate the blade 8 and grind the cutter will be described below. Cooling water 18 passes through the water pipe 5 from the internal water tank 3 due to the pressure of the head, and reaches the upper part due to the centripetal force of the grinding wheel 8. There, the appropriate amount of cooling water 18 is evenly distributed by the action of the sponge 10, and the cooling water 18 is evenly distributed. When the blade is being ground on the grinding line 19 directly below, the cooling water 18 that has served its cooling purpose becomes wastewater mixed with shavings and falls into the wastewater tank 11 together with the excess wastewater adjusted with the sponge 10. There, due to the circular force of the grinding wheel 8, the waste water that passes through the drain pipe 6 and the partition plate 15 and reaches the dust collection tank 16 is purified by sedimentation, and the shavings are deposited, and the clean water rises and is circulated. The operation is repeated. When the cooling water 18 is gradually consumed during the operation process as described above, the cooling water 1
8, the cooling water 18 in the internal water tank 3 floating in the external water tank 2 is reduced in volume and rises due to the buoyancy force, and the connected air tank 4 expands.
When replenishing the cooling water 18 into the internal water tank 3, the internal water tank 3
As the water sinks, the connected air tank 4 contracts, and the water level of the regulating water 17 in the external water tank 2 is maintained at the current level, so there is no constant change in water pressure and a uniform amount of water can be injected. It will be done.

The circulation of the cooling water 18 of the cooling device of the present invention does not require a dedicated power source, and the amount of water injected can be adjusted according to the application by raising and lowering the adjusting screw 12. 1
1, the configuration and operation are simplified and excellent functionality can be achieved.

[Brief explanation of drawings]

The drawings illustrate embodiments of the invention. FIG. 1 is a plan view of the present invention. FIG. 2 is a side sectional view of the present invention. 1
... Machine base, 2 ... External water tank, 3 ...
...Internal water tank, 4...Air tank, 5...
・Water pipe, 6...Drain pipe, 7...Shaft,
8...Whetstone, 9...Whetstone cover, 10.
...Sponge, 11...Wastewater tank, 12.
...adjustment screw, 13...post, 14...
... Rod, 15 ... Partition plate, 16 ...
・Dust collection tank, 17... Conditioned water, 18...
Cooling water, 19...Grinding wire.

Claims (1)

[Claims] 1. The internal water tank 3 is floated in the conditioned water 17 stored in the external water tank 2, and is connected to the air tank 4 with ventilation holes between them, from the bottom where the cooling water 18 is stored in the internal water tank 3. A water pipe 5 and a drain pipe 6 are connected to the grinding machine, and the water pipe 5 is installed at a position on the surface of the grinding wheel 8 fitted on the shaft 7 of the grinding machine, and is installed in the receiving tray of the grinding stone 8. A cooling device for a polishing machine in which a drain pipe 6 is connected to a waste water tank 11.