JPH0683959B2 - Grinding fluid tank for ball cutter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding fluid tank for grinding a spectacle lens, and relates to a grinding fluid tank for a grinding machine of a grinding fluid circulation system which circulates a grinding fluid used for lens grinding. Is.

[0002]

2. Description of the Related Art In the grinding fluid circulating system of a ball grinding machine, the grinding fluid used for lens grinding passes through a drainage system of the ball grinding machine and is then stored in a tank for storing grinding fluid, in which grinding dust is deposited. Then, the system is such that the supernatant grinding fluid is supplied again to the ball shaving machine via the water supply system.

As a conventional grinding liquid storage tank, (1) a partition plate type tank in which a partition plate for precipitation parallel to the wall surface is provided in a rectangular liquid tank.

(2) A filtration tank in which the partitioning plate for precipitation of the partition plate type tank is used as a filtration plate, and small particles of grinding dust are separated by the filtration plate.

Etc. have been proposed.

[0006]

In the above-mentioned tank (1), when the amount of the grinding liquid is large, the sedimentation effect is small because the waste water from the ball grinding machine stirs the stored water in the liquid tank. For this reason,
When the tank of (2) is used, there is a possibility that the number of times of exchanging the grinding liquid is increased, or that the lens is ground by the liquid containing the grinding dust to damage the lens. Moreover, since the partition plate is provided, it is difficult to remove the grinding dust accumulated in the tank and to clean the tank.

Further, in the above-mentioned tank (2), it is necessary to replace the filtration plate, the number of times is larger than that in the tank of (1), and the cost of the filtration plate itself and its maintenance cost such as storage are increased. high.

Disposal of the filtration plate may pose a pollution problem, and removal of grinding dust settled in the tank and cleaning of the tank are necessary when replacing the filtration plate, which is troublesome.

There are problems such as the above.

On the other hand, in such a filtration tank, it is difficult to determine the timing of the grinding dust because it is not known how much grinding dust has accumulated in the filtration tank.

Therefore, the present invention is capable of easily removing and cleaning the grinding debris, and detecting how much the deposited grinding debris has accumulated by detecting the lowered height of the liquid tank in which the grinding debris has accumulated. It is an object of the present invention to provide a grinding fluid tank for a ball shaving machine.

[0012]

In order to achieve this object, the invention of claim 1 has a large liquid tank having a delivery port for delivering a stored grinding fluid to a ball-sliding machine, and the large liquid tank. A grinding liquid tank for a grinding machine, comprising: at least one small liquid tank disposed on the bottom surface; and a detection means for detecting the amount of accumulated grinding dust deposited in the small liquid tank. It is what

Further, the invention of claim 2 is a grinding fluid tank for a grinding machine, which is provided with a detecting means for detecting the lowered height of the small liquid tank when the small liquid tank is lowered to a predetermined height. Characterize.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] <Structure> FIGS. 1 and 2 show a first embodiment of the present invention. In FIG. 1 and FIG. 2, a small tank 30 is built in the tank 10 that is moved to one end so as to form a storage tank 20 and supported by a spring 40. The small tank 30 is covered with a dust bag 16 so as to cover its wall surface and bottom surface.

In the small tank 30 covered with the dust bag 16, a double rectangular tube 34 is built so that one outer ridge line thereof closely matches one inner ridge line of the small tank 30.

The double rectangular cylinder 34 is open at its upper and lower ends, and has a partition wall 33 having a substantially L-shaped horizontal cross section. The height of the partition 33 is lower than the height of the outer wall 32 parallel to the partition 33. The partition wall 33 divides the double rectangular cylinder 34 into the first small liquid tank 17 and the second small liquid tank 18.

Moreover, the volume of the second small liquid tank 18 is larger than that of the first small liquid tank 18. Small tank 30
By incorporating the double rectangular cylinder 34 as described above, the third small liquid tank 19 is formed by being separated by the outer wall 32, and the volume thereof is larger than that of the second small liquid tank 18. An index 35a is provided on the upper end of the small tank 30.
A pointer bar 35 having is attached. The index 35a is configured to indicate the scale 36 that indicates the amount of grinding dust. The scale 36 has a red zone 36a that indicates the threshold of grinding debris accumulation. The pointer bar 35 and the scale 36 as described above constitute a detecting means for detecting and notifying the accumulated amount of grinding dust. The drain pipe 22 is inserted in the first small liquid tank 17.

<Operation> According to this structure, the grinding drainage liquid from the drainage pipe 22 is discharged from the first small liquid tank to the third small liquid tank 17,
Temporarily stored in 18 and 19 in sequence, and finally storage tank 2
It is stored at 0 and sent from the delivery port to the ball shaving machine.

During this time, grinding debris in the grinding effluent is stored in each small liquid tank 1
It is made to flow into and sediment into 7,18,19. Then, as the grinding debris is accumulated in the small liquid tanks 17, 18, and 19,
The weight of the accumulated grinding dust causes the small tank 30 to move downward against the elastic force of the spring 40, and the index 3
5a also descends integrally with the small tank 30. Moreover, this index 35a is the red zone 36a of the scale 36.
When it enters as indicated by 35a ', the user can know when it is time to discard the grinding waste.

When discarding the grinding dust, the double rectangular cylinder 34 is used.
From the small tank 30 and put the garbage bag 16 into the small tank 3.
It can be extracted from 0 and discarded together with the garbage bag 16.

[Second Embodiment] FIG. 3 shows a second embodiment of the present invention. In FIG. 3, a first inner wall 13 formed by the wall portion of a vertically open cylindrical cylinder built in the small tank 30 and a second small wall 14 formed by the standing wall of the small tank 30.
A bubble cutting cylinder 50 having a lid 54 at the upper portion and a foot 53 at the lower portion is interposed between the and. A plurality of openings 52 are formed in the side wall of the bubble cutting cylinder 50 for allowing the drainage liquid to pass therethrough.
An opening 51 is formed in the center of the lid 54,
Through the opening 51, the drain pipe 22 is connected to the first small liquid tank 17
Has been inserted inside. Grinding dust disposal time detection means 60
Is a water-repellent and elastic pipe 6 with one end closed.
1 and a switch 64, a lamp 62, a power source 63, and a lead wire 65 electrically connecting them, which are built in the closed end portion.

According to this structure, the grinding drainage liquid from the drainage pipe 22 flows into the first small liquid tank 17, and the overflowed drainage liquid 21 is the second small liquid tank 30.
Is flowed in. At this time, the drainage is blocked by the bubble cutting cylinder 50 and flows out only through the gap between the foot portion 53 and the opening 52. For this reason, the outflow rate of the drainage liquid from the bubble cutting cylinder 50 to the small tank 30 becomes slow, and the precipitation effect in the small tank 30, which is the second small liquid tank 18, becomes large.

Further, when a plastic lens is ground by a ball shaving machine, the drainage may be foamed and the water supply capacity of the grinding fluid may decrease. In this embodiment, however, the drainage overflowing from the first small liquid tank 17 is discharged. Since the upper bubbles are hermetically blocked in the upper part of the bubble cutting cylinder 50, the bubbles are prevented from flowing out into the grinding fluid storage tank 20, and not only the grinding dust but also the bubbles are removed from the outlet 11. The liquid can be redelivered. Also,
When the amount of grinding debris in the small tank 30 increases and the small tank 30 descends, the switch 64 in the pipe 61 closes the bottom of the small tank 30 and the lamp 62 is turned on to notify the user that it is time to discard the grinding debris. Inform.

In this embodiment, since the drained liquid overflowing from the first small liquid tank 17 flows out to the second small liquid tank 18 only through the opening 52 of the bubble cutting cylinder 50, the first small wall 13 is discharged. The height does not necessarily have to be higher than the height of the wall 14 of the small tank 30, and may be the same height.

[Third Embodiment] FIG. 4 shows a third embodiment of the present invention. The same components as those in the second embodiment in FIG. 4 are designated by the same reference numerals. In the present embodiment, as shown in FIG. 4, an annular float 501 is formed in the lower portion of the bubble cutting cylinder 50, and air is sealed in an annular space 502 inside the float 501. The drain pipe 22 is only inserted into the opening 51 of the bubble cutting cylinder 50 as in the second embodiment. As a result, the foam cutting cylinder 50 can move up and down with respect to the drainage pipe 22.

According to such a structure, the bubble cutting cylinder 50 has the second
The float 501 is floated on the liquid surface of the grinding waste liquid in the small liquid tank 18 to block the bubbles of the waste liquid. Even in this configuration, the same action and effect as those of the second embodiment can be obtained.

[0028]

Since the present invention is configured as described above, it is easy to remove and clean the grinding dust, and when the small liquid tank is lowered by a predetermined height, a detecting means for detecting the lowered height is provided. With the provision, it is possible to detect how much the precipitated grinding dust has accumulated, and it is possible to know the timing of discarding the grinding dust accurately and easily.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a vertical sectional view showing a second embodiment of the present invention.

FIG. 4 is a vertical sectional view showing a third embodiment of the present invention.

[Explanation of symbols]

 10 ... Tank (Large Liquid Tank) 11 ... Outlet 12 ... Water Pipe 16 ... Garbage Bag (Grinding Waste Storage Bag) 17 ... First Small Liquid Tank 18 ... Second Small Liquid Tank 19 ... Third Small Liquid Tank 20 ... Grinding Liquid storage tank 30 ... Small tank 34 ... Double rectangular cylinder 35 ... Pointer bar (part of detection means) 36 ... Scale (part of detection means) 40 ... Spring 60 ... Grinding dust disposal time detection means

Claims (2)

[Claims] 1. A large fluid tank having a delivery port for delivering a stored grinding fluid to a ball shaving machine, and at least one small fluid tank disposed on a bottom surface of the large fluid tank, A grinding fluid tank for a grinding machine, comprising a detection means for detecting the amount of grinding dust deposited in the small fluid tank. 2. The grinding fluid tank for a ball grinding machine according to claim 1, further comprising detection means for detecting the lowered height when the small fluid tank is lowered to a predetermined height. .