JP2001038623A - Lens grinding attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a space by forming a structure for integrating respective devices by using a supply/exhaust means of a deodorizing device as a backwash means of a filtering means in common. SOLUTION: When arranging a deodorizing device 9 and a filtering device 16, it is supposed to arrange an air blowing means such as a motor-driven air blower 39 in the deodorizing device 9 and to arrange an air blowing means for backwashing a filter 20, and when respectively arranging the air blowing means in the respective devices 9, 16, it is difficult to be compactly constituted. However, since the respective devices 9, 16 are integrally constituted by forming the motor-driven air blower 39 of the deodorizing device 9 so as to function as a backwash means of the filter 20 arranged in the filtering device 16, there is no need to arrange the air blowing means for backwashing the filter 20 in the filtering device 16 itself, the filtering device 16 can be made compact to also miniaturize a system including the deodorizing device 9 and the filtering device 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens grinding device provided with a filtering device for a grinding fluid used for grinding a spectacle lens and a deodorizing device for removing odors and odors generated during the grinding process. .

[0002]

2. Description of the Related Art In a conventional spectacle store, especially a tenant store, etc., since the space inside the store is limited, a deodorizing device for deodorizing an odor and an unpleasant odor generated at the time of grinding a spectacle lens (a lens to be processed) and a processing device. It has been difficult to secure a space in which various devices such as a separation device for separating a lens gas generated later and a lens grinding device are provided.

[0003]

Therefore, in a general spectacle shop, there is a possibility that malodors and unpleasant odors generated at the time of lens processing or after processing are filled in the store as it is, and may cause discomfort to customers.

Accordingly, the present invention provides a lens grinding device having a structure in which the respective devices are integrated to save space, and furthermore, to provide a lens grinding device in which the blowing mechanism of the backwashing mechanism also serves as the blowing means of the deodorizing device. Aim.

[0005]

Means for Solving the Problems To achieve this object, an invention according to claim 1 includes a filtering device for filtering a grinding fluid for grinding a lens to be processed, and an odor and an odor generated during the grinding process. In a lens grinding device having a deodorizing device provided with a supply / exhaust means for deodorizing a gas, the supply / exhaust means of the deodorizing device is also used as a backwashing means of the filtering device.

A second aspect of the present invention is a lens grinding apparatus having a filtering device for filtering a grinding fluid for grinding a lens to be processed, and a deodorizing device for removing odors and odors generated during the grinding process. Wherein a circulating means for circulating the air deodorized by the deodorizing device to the filtering device is provided.

[0007] The invention of claim 3 is claim 1 or claim 2
In the lens grinding device provided with the grinding fluid filtering device and the deodorizing device described in the above, a switching control means for switching a filtering process, a deodorizing process and a backwashing process is provided.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. [Overall Configuration] In FIG. 1, reference numeral 1 denotes a lens grinding device (a balling machine); 2, a processing chamber of the lens grinding device 1; 3, a lens rotating shaft disposed in a processing chamber (a grinding processing chamber) 2; Denotes a processing lens held by the lens rotating shaft 3, 5 denotes a grinding wheel for grinding the periphery of the processing lens 4, 6 denotes a nozzle for spraying cooling water for cooling to a grinding portion of the processing lens 4 by the grinding wheel 5. is there. Although a well-known ball mill is used as the lens grinding device 1, in this embodiment, for convenience of explanation, only the minimum components necessary for the present invention are schematically illustrated. The lens grinding device 1 of FIG. 1 includes a grinding water circulation device 7, a grinding waste removal device 8, and a grinding fluid separation / deodorization device 9. <Grinding Water Circulating Device 7> In FIG. 1, the grinding water circulating device 7 includes a waste water tank 10 disposed below the lens grinding device 1, a cover plate 10a closing an upper opening end of the waste water tank 10, a grinding machine. There is a drain hose 11 for draining grinding water containing debris from the bottom of the processing chamber 2 into the waste water tank 10. A waste liquid 12 is stored in the waste water tank 10, and a space 10b is formed between the waste liquid 12 and the lid 10a. Reference numeral 12a denotes an upper surface of the waste liquid 12, 12b denotes bubbles floating on the upper surface 12a of the waste liquid 12, and 12c denotes grinding dust settled at a lower portion of the waste liquid 12.

Further, the grinding water circulating device 7 includes a cover plate (cover).
A suction pump 13 fixed to the bottom 11 and having a suction port 13 a at the lower end is inserted into the upper part of the waste liquid 12. The pump 13 has a discharge side connected to the nozzle 6 via a pipe 14, and is configured to discharge a wastewater tank when the grinding wheel 5 is used to grind the peripheral edge of the lens to be processed (unprocessed spectacle lens) 4. A waste liquid 12 in 10 is sucked up from above through a filter (not shown) and discharged from a nozzle 6, and the discharged waste liquid is blown as cooling water to a grinding portion of the lens 4 to be processed 4 by a grinding wheel 5. <Grinding waste removal device 8> The grinding waste removal device 8
It has a pump 15 for pumping the waste liquid 12 containing c from the waste water tank 10, and a grinding liquid filtration device (waste liquid filtration device) 16 for filtering the waste liquid 12 supplied from the pump 15 and returning it to the drain tank 10. (Grinding fluid filtration device 16) As shown in FIGS. 4 to 6, this grinding fluid filtration device 16 is a transparent cylindrical container 17 having a bottomed cylindrical shape.
A transparent cylindrical grinding waste collecting bag 18 having a bottom and disposed along the inner wall surface of the cylindrical container 17, and a lid (lid portion) 19 for closing an upper opening end of the cylindrical container 17. And a cartridge-type cylindrical filter (filtering unit) 20 concentrically disposed in the upper part of the cylindrical container 17. A space 18a is formed below the center of the grinding waste collection bag 18 as a settling portion for grinding waste. By providing this space 18a, the life of the cylindrical filter 20 can be extended. Both ends of the cylindrical filter 20 are open as shown in FIGS. 4 to 6 and FIG. 7A. 17a is an outer flange provided at the upper end of the cylindrical container 17.

The lid 19 is, as shown in FIGS.
A lid main body 19a having a circular back shape, a bottom wall 19b provided at a lower portion of the lid main body 19a, cylindrical portions 19c and 19d continuously and internally and externally connected to the bottom wall 19b, and a lower end of the cylindrical portion 19d Of the cover main body 19a, connecting cylinders 19f and 19g formed on the cover main body 19a, and a filter fixing shaft 21 having one end fixed to the center of the cover main body 19a.
Moreover, the connecting tubular portion 19f has an internal passage 19f 'located between the tubular portions 19c and 19d, and is open to the lower surface of the bottom wall 19b.

The connecting tube 19g communicates with the inside of the tube 19c via a space 19a 'in the lid body 19a. The upper end of the grinding waste collection bag 18 is
7, the outer flange 19e of the lid 19 is fitted to the outer flange 17a of the cylindrical container 17 via the folded portion of the grinding dust collecting bag 18.

Moreover, the outer flanges 19e, 17a
Has a U-shaped cross section, is detachably fixed by a fastening band 22, and holds the folded portion of the grinding waste collection bag 18. The fastening band 22 is formed by dividing a circular one into two parts and detachably fastening the divided ends with bolts and nuts (not shown).

The cylindrical filter 20 includes a filter fixed shaft 2.
1, is detachably attached to the lid 19 via a flanged bottom cap 23 and a wing nut 24. That is, by inserting the cylindrical portion 19c of the lid 19 from the state of FIG. 8A into the upper end of the cylindrical filter 20 as shown in FIG. 19
4A to 6C, the bottom cap 23 with a flange is fitted into the lower end of the cylindrical filter 20 as shown in FIGS. 7 (b), and the bottom cap 2 is closed as shown in FIGS.
The cylindrical filter 20 is detachably attached to the lid 19 by screwing a wing nut 24 to a screw portion 21 a of the filter fixing shaft 21 that penetrates the filter 3.

The grinding waste collecting bag 18 and the cylindrical filter 20
A space 25 is formed between the space and the space 25, and a passage 19f 'of the connecting tubular portion 19f is opened in the space 25.

Further, the grinding dust removing device 8 removes the waste liquid discharged from the pump 15 to the connecting cylinder 19 f of the lid 19.
And a cleaning liquid return hose 27 for returning the cleaning liquid from the connection tube 19g of the lid 19 to the wastewater tank 10. The waste liquid supply hose 26 includes a hose 26a having one end connected to a discharge port (not shown) of the pumping pump 15, and a hose 26b having one end connected to the connection cylinder 19f. Also, the cleaning liquid return hose 27
Is a hose 27a having one end connected to the connection cylinder 19g.
And a hose 27b having one end connected to a space 10b between the waste liquid 12 of the waste water tank 10 and the lid 10a.

A three-way electromagnetic switching valve 28 is interposed between the hoses 26a and 26b, and a three-way electromagnetic switching valve 29 is interposed between the hoses 27a and 27b. Detailed symbols of the three-way electromagnetic switching valves 28 and 29 are omitted in FIGS. 1 to 3 for convenience of illustration, and are attached to FIGS. 4 to 6. The switching states of the three-way electromagnetic switching valves 28 and 29 correspond to FIGS. 1 and 4, FIGS. 2 and 5, and FIGS. 3 and 6, respectively.

The three-way electromagnetic switching valve 28 has a cylindrical valve body 30 and a valve body 31 rotatably fitted in the valve body 30. The valve body 30 has ports 30a, 30
b, 30c, and the valve element 31 has a T-shaped switching passage 31a.
Having. The three-way electromagnetic switching valve 28 rotates the valve body 31 by controlling the energization of a solenoid (not shown) to connect the ports 30a and 30b with the switching passage 31a and to connect the ports 30b and 30c to the switching passage. 3
It is possible to switch between three positions, that is, a state where the communication is performed by 1a and a state where the ports 30a and 30c are communicated by the switching passage 31a.

The three-way electromagnetic switching valve 29 has a cylindrical valve body 32 and a valve body 33 rotatably fitted in the valve body 32. The valve body 32 has ports 32a, 32
b, 32c, and the valve element 33 has a T-shaped switching passage 33a.
Having. The three-way electromagnetic switching valve 29 rotates the valve body 33 by controlling the energization of a solenoid (not shown) to connect the ports 32a and 32b with the switching passage 33a and to connect the ports 32b and 32c to the switching passage. 3
The three positions can be switched between a state where the communication is performed by 3a and a state where the ports 32a and 32c are communicated by the switching passage 33a.

The port 30 of the three-way electromagnetic switching valve 28
The other ends of the hoses 26a and 26b are connected to a and 30b, the other ends of the hoses 27a and 27b are connected to the ports 32a and 32b of the three-way electromagnetic switching valve 29, and the three-way electromagnetic Port 30 of switching valve 28
c is connected. <Deodorizing Device 9> As shown in FIG. 10, the grinding fluid separating / deodorizing device 9 includes an outer case 34, an inner case 34a, a collision separator 35, a water tank 36, a precision filter 37, and a deodorizer 38.
And an electric blower 39. The inner case 34a is disposed inside the outer case 34 so as to be located on the side of the collision separator 35.

The collision separator 35 includes a vertically long case 35a provided inside one side of the outer case 34, and a case 35a.
a has one partition wall (collision separation plate) 35b protruding downward from the upper end of a. Two spaces 35b and 35c are formed above the case 35a by the partition wall 35b. The upper portion of the space 35b is connected to the upper space 10b of the wastewater tank 10 via a hose 40. The water storage tank 36 is formed vertically long and is disposed below the collision separator 35, and has an upper end communicating with a lower end of the case 35a.

The deodorizer 38 has a case 38a disposed in the inner case 34a, and a deodorant 38b disposed in a vertically intermediate portion of the case 38a. The deodorizing agent 38b may include an activated carbon impregnated with carbon 36a, porous alumina-based ceramics, ceramic balls, ZnO, Ti
A photocatalyst using O ₂ or the like may be used, or a mixture of these and impregnated activated carbon may be used. In addition, a precision filter 37 is provided above the deodorant 38b.
A suction space 41 and an exhaust space 42 located above the precision filter 37 and below the deodorant 38b are formed in the upper end and the lower end of the case 34a, respectively.
1 to 3, the precision filter 37 and the spaces 41 and 4 are used.
2 is omitted for convenience of illustration. An electric blower 39 serving as a supply / exhaust unit is disposed below such a deodorizer 38.

Further, the suction space 41 is connected to the space 35b of the case 35a via a hose 43, and the exhaust space 42 is provided with a suction port 39a of the electric blower 39.
Connected through. An exhaust port 39b of the electric blower 39 is connected to a port 32c of the three-way electromagnetic switching valve 29 via a hose 45.

The hose 45 and the three-way electromagnetic switching valves 28 and 2
Reference numeral 9 and the like constitute circulating means for circulating the air deodorized by the deodorizing device 9 to the grinding fluid filtering device 16. <Switching Control Means> The control of energization of the solenoids (not shown) of the three-way electromagnetic switching valves 28 and 29 is performed by a control circuit 46 as switching control means. The control circuit 46 also controls the operation of the pump 15 and the electric blower 39.

Next, the operation of the above-structured grinding system (grinding apparatus) will be described. (1) Grinding of lens to be processed and cooling of grinding part In the lens grinding device 1, the grinding wheel 5 is driven to rotate, and the rotation control and the elevation control of the lens rotating shafts 3, 3 are performed based on the lens shape data. Thus, the peripheral portion of the lens 4 to be processed held between the lens rotation shafts 3 and 3 is ground into a lens shape by the grinding wheel 5. Since this processing method can be performed using a known technique, a detailed description thereof will be omitted.

At the time of this grinding, the pump 13 is operated to operate the waste liquid 1 stored in the waste water tank 10.
2 is pumped from a relatively clear upper portion through a filter (not shown). The waste liquid pumped by the pump 13 is blown from a nozzle 6 through a pipe 14 to a grinding portion of the lens 4 to be processed by a grinding wheel 5 as cooling water, thereby cooling the grinding portion and grinding the lens 4 to be processed. The grinding dust that has been ground by the grindstone 5 is washed away. The grinding chips washed off by this are drained into the wastewater tank 10 via the hose 11 together with the cooling water. (2) Deodorization (removal of odor) By the way, when the lens 4 to be processed is a plastic lens, when the plastic lens is ground with the grinding wheel 5, the nose is affected by sulfur molecules contained in the plastic lens. An odor such as an unpleasant odor or an off-flavor is generated. The air containing the odor is dissolved in the cooling water used for grinding the lens 4 to be processed, and is allowed to flow down into the wastewater tank 10 via the hose 11 together with the cooling water, or is caught in the flowing cooling water. And flow down into the wastewater tank 10.

Therefore, in order to remove the odor flowing into the wastewater tank 10 during the grinding of the lens 4 to be processed, the control circuit 46 controls the energization of the solenoids (not shown) of the three-way electromagnetic switching valves 28 and 29. As shown in FIG. 4, the ports 30a and 30b of the three-way electromagnetic switching valve 28 communicate with the switching passage 31a, and the ports 32b and 32c of the three-way electromagnetic switching valve 29 communicate with the switching passage 33a (see FIG. 1). . Thereafter, the control circuit 46 controls the operation shown in FIGS.
The operation of the electric blower 39 is controlled to generate an intake negative pressure on the suction side of the blower 39.

The suction negative pressure is applied to the hose 44 and the exhaust chamber 4.
2, acts on the space 10b of the wastewater tank 10 via the deodorizer 38, the precision filter 37, the suction chamber 41, the hose 43, the collision separator 35 and the hose 40.

As a result, air containing odors such as bad odors and unpleasant odors flows from the upper space 10b of the wastewater tank 10 to the hose 40.
Through the space 35b of the collision separator 35. At this time, a part of the bubbles 12b containing the grinding dust floating above the space 10b of the wastewater tank 10 flows into the space 35b of the collision separator 35 together with the air containing the odor, and the grinding dust and the bubbles contained in the air are removed. In addition, fine particles of the grinding fluid collide with the collision plate 45a of the collision separator 35 and adhere to and are separated from air.

The air from which the grinding dust, bubbles, fine particles of the grinding fluid and the like have been removed flows into the suction chamber 41 through the hose 43 together with the odor, and then flows into the deodorizer 38 through the precision filter 37. It flows into the deodorant 38b. At this time, grinding dust and fine particles of the grinding fluid that could not be separated by the collision separator 35 are further removed by the precision filter 37, and only air containing odor flows into the deodorizer 38b, and most of the odor in the air is deodorized. It is captured and removed by the agent 38b. However, even if most of the odor is removed, it is difficult to completely remove the odor from the air.

Accordingly, the air from which most of the odor has been removed in this way is sucked into the electric blower (blower) 39 via the exhaust chamber 42 and the hose 44, and then the electric blower 39
And is returned to the space 10b above the wastewater tank 10 via the hose 45, the three-way electromagnetic switching valve 29, and the hose 27b.

As a result, the air which partially remains in the odor is not exhausted to the atmosphere, so that the air is not polluted with the odor, and the operator using the lens grinding apparatus does not feel unpleasant due to the odor. . (3) Filtration of Grinding Fluid (Waste Fluid 12) (Removal of Grinding Debris) As described above, during grinding of the lens 4 to be processed, the grinding fluid is caused to flow down from the grinding portion of the lens 4 to be processed via the waste water hose 11. The cooling water (grinding fluid) is stored in a wastewater tank 10 as a wastewater 12, and together with this cooling water, the wastewater tank 10
The grinding waste flowing down is settled in the bottom of the wastewater tank 10.

When filtering the waste liquid (grinding liquid) 12 stored in the waste water tank 10, the control circuit 46 controls the energization of solenoids (not shown) of the three-way electromagnetic switching valves 28 and 29 by performing control. As shown in FIG. 5, the ports 30a and 30b of the three-way electromagnetic switching valve 28 are connected to the switching passage 31a.
And the port 32 of the three-way electromagnetic switching valve 29
a and 32b are communicated by the switching passage 33a (see FIG. 2). On the other hand, in this state, the control circuit 46
Of the pump 15 is operated.

Thus, the waste liquid 12 in the waste water tank 10
Is sucked from the lower part of the pump 15. The waste liquid (grinding water) sucked into the pump 15 flows into the filtration device 16 via the hose 26a, the three-way electromagnetic switching valve 28, and the hose 26b. The flowed waste liquid is filtered by the cylindrical filter 20 and flows into the inside.
At this time, the grinding debris in the waste liquid is collected on the outer peripheral surface of the cylindrical filter 20 and forms a lump (sludge) A, which flows downward and precipitates,
The dust accumulates on the bottom of the grinding dust collecting bag 18 and
A grinding dust layer B is formed at the bottom of the substrate.

By providing the space 18 a as a settling portion and forming a grinding dust layer B at the bottom of the grinding dust collecting bag 18 in this manner, the amount of grinding dust (lumps A) adhered to the cylindrical filter 20 is reduced. Can be reduced. (4) Backwashing of grinding dust adhering to the cylindrical filter 20 By filtering waste liquid by such a grinding fluid filtering device 16,
The cylindrical filter 20 is gradually clogged, and the filtering function of the cylindrical filter 20 is reduced. Therefore, in order to prevent such a decrease in the filtering function, the cylindrical filter 2 is used.
It is necessary to periodically remove the grinding debris attached to Ob.

For this purpose, the control circuit 46 controls the energization of solenoids (not shown) of the three-way electromagnetic switching valves 28 and 29, as shown in FIG.
The ports 30b and 30c of the three-way electromagnetic switching valve 29 are connected to each other through the switching passage 31a.
Through the switching passage 33a (see FIG. 3).

In addition, at this time, the control circuit 46 operates as shown in FIG.
3 is operated to generate an intake negative pressure on the suction side of the electric blower 39, and the grinding fluid separating / deodorizing device 9 removes fine particles and grinding dust of the grinding fluid as described above. In addition, most of the odor in the air is deodorant 3
8b capture and remove.

The air from which most of the odor has been removed is
Electric blower (blower) via exhaust chamber 42 and hose 44
After being sucked into the inside 39, it is discharged from the electric blower 39 and flows back into the tubular portion 19c of the lid 19 via the hose 45, the three-way electromagnetic switching valve 29, and the hose 27a. The air that has flowed back into the cylindrical portion 19c flows out of the cylindrical filter 20 from the inside to the outside, and the grinding dust A attached to the outer surface of the cylindrical filter 20 is separated from the outer surface and settled downward. At this time, the air that has passed through the cylindrical filter 20 is returned to the space 10b above the wastewater tank 10 via the hose 27b, the three-way electromagnetic switching valve 28, and the hose 27b, and circulates.

The removal of the grinding dust by the backflow of the air is performed until the peeling of the grinding dust from the outer surface of the cylindrical filter 20 is reduced.

Further, by continuing such a backwashing state, even if deodorization by the control of the above (2) is not performed,
Backwashing and deodorization can be performed simultaneously.

When the deodorizing device 9 and the filtering device 16 are provided, the deodorizing device 9 may be provided with a blowing device such as an electric blower 39, and the filtering device 16 may be provided with a blowing device for backwashing the filter 20. It is conceivable, however, that if each of the devices 9 and 16 is provided with the blowing means, the respective devices 9 and 16 are provided.
It is difficult to make the 16 compact, and as a result, the entire system including the devices 9 and 16 becomes large. However, as described above, by making the electric blower 39 of the deodorizing device 9 function as a backwashing means of the filter 20 provided in the filtering device 16, the devices 9 and 16 are formed as an integrated structure. It is not necessary to provide an air blowing means for backwashing the filter 20 in the filtering device 16 itself, so that the filtering device 16 can be made compact, and the system including the deodorizing device 9 and the filtering device 16 can be downsized. As a result,
The system of the present invention can be installed even in a small place in a store. (5) Grinding waste disposal and replacement of the cylindrical filter 20 Further, due to the filtration of the grinding fluid (waste fluid 12) in (3), some grinding waste was deposited on the bottom inside the grinding waste collection bag 18 of the filtration device 16. Sometimes, remove the fastening band 22,
After the lid 19 is removed from the upper end of the cylindrical container 17 as shown in FIG. 7, the grinding dust collecting bag 18 is removed from the cylindrical container 17, and the grinding dust is collected together with the grinding dust collecting bag 18 and disposed of. . Since the cylindrical container 17 and the grinding waste collecting bag 18 are transparent, the amount of the grinding waste accumulated can be visually confirmed from the outside. By providing the grinding waste collecting bag 18 in this way, the grinding waste can be collected and discarded without soiling the hands.

After the fastening band 22 has been removed and the lid 19 has been removed from the upper end of the cylindrical container 17 as shown in FIG. 7, the grinding dust collecting bag 18 is removed from the cylindrical container 17, and
By removing the wing nut 24 from the filter fixing shaft 21, the tubular filter 20 can be removed from the tubular portion 19 c of the lid 19. Therefore, if the clogged state cannot be eliminated even by removing the grinding debris of the cylindrical filter 20 due to the backflow of the air, the clogged cylindrical filter 20 is removed from the lid 19 and a new one is removed. Exchange.

By preparing another tubular filter and using it alternately, the life of the tubular filter can be extended. (6) Others In the embodiment described above, the control circuit (switching control means) 46 performs (2) deodorization (removal of odor), and (3) grinding fluid (waste fluid 1).
The filtering (removal of grinding waste) and the backwashing and deodorization of the grinding waste attached to the cylindrical filter 20 have been individually described in 2). The control of (2) to (3) by the control circuit 46 is as follows. It may be. For example, the lens 4 to be processed by the lens grinding device 1
The deodorization of (2) or the deodorization after backwashing of (4) is performed during the grinding process to effectively deodorize and remove the odor generated during the grinding process, and the filtration of (3) is performed immediately after the grinding process. Then, the backwash of (4) may be performed next.

In this case, when the deodorization of (2) is performed at the time of the grinding process, immediately before performing the backwashing of (4), the filtration device 1 is used.
6 is filled with the grinding liquid (waste liquid), so that it can be performed at the same time as the start of the backwash in (4). Further, when the backwashing and deodorization of (4) are performed during the grinding process, the clogged state of the cylindrical filter 20 has been eliminated before the filtration of (3), and thus the filtration of the waste liquid (grinding water) after deodorization. Can be performed effectively. In addition, when (4) backwashing and deodorization are performed after the grinding process, the clogging of the tubular filter 20 and the deodorization can be effectively performed simultaneously.

In the grinding process, the filtration in (3) may be performed, and immediately after the grinding process, the backwash and deodorization in (2) or (4) may be performed for a certain period of time. In this case, the grinding waste in the grinding fluid (waste liquid) can be removed at the time of the grinding process. Therefore, the cleaned waste liquid is always supplied to the nozzle 6 as grinding water (cooling water), and the lens to be processed is cleaned with the cleaned grinding water. No. 4, it is possible to favorably suppress generation of odor due to cooling of the grinding portion and to remove grinding dust from the grinding portion with grinding water.
In addition, when (4) backwashing and deodorization are performed after the grinding process, the clogging of the cylindrical filter 20 and the deodorization can be effectively performed simultaneously.

Further, in the embodiment described above, the air deodorized by the grinding fluid separating / deodorizing device 9 is directly or through the grinding fluid filtering device 16 to the space 10 above the waste water tank 10.
b, but is not necessarily limited to this. For example, a third three-way electromagnetic switching valve is provided in the middle of the hose 45, and when grinding the lens 4 to be processed, air deodorized by the grinding fluid separating / deodorizing device 9 is passed through the third three-way electromagnetic switching valve to the lens. It is also possible to return to the processing chamber 2 of the grinding apparatus 1 and to perform the filtering (removal of grinding chips) of the grinding fluid described in the above (3). In this case, the odor generated in the processing chamber 2 and the odor in the space 10b above the wastewater tank 10 can be removed (deodorized) by suctioning with the grinding liquid separating / deodorizing device 9, and the waste liquid is filtered. be able to.

In the conventional deodorizing apparatus of the lens grinding apparatus, after removing the offensive odor and offensive odor generated at the time of grinding the spectacle lens (the lens to be processed), the deodorized air is discharged from the exhaust port. However, although deodorized,
Since the air discharged from the exhaust port is not completely deodorized, if the air is discharged into a room or a store where the lens grinding device is installed as it is, there is a possibility that workers and customers may feel uncomfortable. On the other hand, if a ventilation fan or the like is used to ventilate the inside of a work room or a store, costly expenses are required, and it is considered for a long time whether the released deodorized air (purified air) cannot be reused. Have been. However, in the present invention,
Air that has been deodorized to eliminate malodors and odors generated during grinding of the lens to be processed is reused instead of the air pump used for the backwash mechanism to prevent clogging of the grinding fluid filtration device, so it is conventionally discharged as it is. The deodorized air (purified air) can be used effectively.

[0047]

As described above, the invention of claim 1 is
In a lens grinding apparatus having a filtering device for filtering a grinding fluid for grinding a lens to be processed and a deodorizing device having a supply / exhaust means for removing odors and odors generated during the grinding process, a deodorizing device is provided. Since the air supply / exhaust means of (1) is also used as the backwash means of the filtration device, the structure of each device is integrated, and the space can be saved.

A second aspect of the present invention is a lens grinding apparatus having a filtering device for filtering a grinding fluid for grinding a lens to be processed, and a deodorizing device for removing odors and odors generated during the grinding process. In the above, since the air deodorized by the deodorizing device is circulated to the filtering device, the air deodorized for the offensive odor and the unpleasant odor generated at the time of the grinding of the lens to be processed is reversed to prevent clogging of the grinding fluid filtering device. It can be reused instead of the air pump used for the washing mechanism. Thereby, the deodorized air (purified air) that has been conventionally discharged as it is can be effectively used.

According to a third aspect of the present invention, there is provided a lens grinding apparatus having the grinding fluid filtering device and the deodorizing device according to the first or second aspect, wherein the control means controls the filtering step, the deodorizing step, and the backwashing step. By setting the control order in advance, the filtering step, the deodorizing step, and the backwashing step can be effectively and automatically performed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a lens grinding device according to the present invention.

FIG. 2 is an operation explanatory view of the lens grinding device shown in FIG. 1;

FIG. 3 is an operation explanatory view of the lens grinding device shown in FIG. 1;

FIG. 4 is a sectional view for explaining a main part of the grinding fluid filtering device and the three-way electromagnetic switching valve shown in FIG. 1;

FIG. 5 is a cross-sectional view for explaining a main part of the grinding fluid filtration device and the three-way electromagnetic switching valve shown in FIG. 2;

FIG. 6 is a cross-sectional view for explaining a main part of the grinding fluid filtering device and the three-way electromagnetic switching valve shown in FIG. 3;

7 (a) is a perspective view of the cylindrical filter shown in FIGS. 4 to 6, and FIG. 7 (b) is a perspective view in which a bottom cap is attached to a lower part of the cylindrical filter of FIG.

8A is an exploded perspective view showing a relationship between an upper portion of a cylindrical filter and a cylindrical portion of a lid, and FIG. 8B is an exploded perspective view showing a state where the cylindrical filter of FIG. FIG.

FIG. 9 is a schematic explanatory view when a grinding waste collection bag is taken out from the filtration device.

FIG. 10 is a detailed explanatory view of the grinding fluid separating / deodorizing apparatus shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lens grinding device 4 ... Lens to be processed 16 ... Grinding fluid filtration device 19 ... Grinding fluid separation / deodorization device 28, 29 ... Three-way electromagnetic switching valve (part of circulation means) 39 ... Electric blower (supply / exhaust means) 45 ... Hose (part of circulation means) 46 ... Control circuit (switching control means)

Claims (3)

[Claims] 1. A lens grinding apparatus comprising: a filtering device for filtering a grinding fluid for grinding a lens to be processed; and a deodorizing device having a supply / exhaust means for removing odors and odors generated during the grinding process. In the apparatus, a lens grinding device characterized in that a supply / exhaust means of the deodorizing device is also used as a back washing means of the filtering device. 2. A lens grinding apparatus comprising: a filtering device for filtering a grinding fluid for grinding a lens to be processed; and a deodorizing device for deodorizing odors and unpleasant odors generated during the grinding process. A lens grinding device provided with a circulating means for circulating the filtered air to a filtering device. 3. A lens grinding device provided with a grinding fluid filtering device and a deodorizing device according to claim 1 or 2, wherein a switching control means for switching between a filtering process, a deodorizing process and a backwashing process is provided. A lens grinding device characterized by the following.