CN100515662C - A jig for rounded lenses - Google Patents

Abstract

The invention discloses an implement of round lenses, it includes a bulk, the bulk is equipped with groove; the groove is fixed with capillary structure; the top of the capillary structure is equipped with a channel which is connected with the capillary structure through at least air-breathing hole; in addition, the surface of the capillary structure is sealed except the air-breathing hole and the channel surface. Said implement of round lenses has merits of fixing lenses easily.

Description

A jig for rounded lenses

【Technical field】

The invention relates to the field of lens processing, in particular to a jig for rounding lenses.

【Background technique】

With the development of science and technology, the application of various optical lenses has been continuously expanded; correspondingly, in order to meet the market demand, the production technology of optical lenses has also been continuously improved.

For the preparation of circular lenses, generally, the mother sheet is cut into square glass lenses with a forming cutting machine; then the square lenses are rounded with a rounding machine. However, in the process of rounding, if a single lens is processed at a time, the processing efficiency is too low. Therefore, the method of removing the four corners of the prior art to become a circle is generally to bond a plurality of lenses together first, and then grind them with an emery wheel.

Please refer to Fig. 1 and Fig. 2, the lens rounding process in the prior art is that firstly a plurality of square lenses 1 are stacked into a lens cylinder 10, and then the lens cylinder 10 is put into the V-shaped groove 2 of the jig 30 and Fix it, and then use a grinding wheel to grind the lens part outside the jig, then remove the ground lens cylinder and put it into another jig, and continue to grind the lens into a circle.

Since the grinding wheel will generate shear force during grinding, the lens cylinder 10 needs to be fixed during grinding to prevent the lens from detaching from the jig and resulting in a decrease in yield. In the prior art, the method for fixing the lens cylinder 10 is mostly to apply UV glue (ultraviolet curable adhesive) on the V-shaped groove 2 and between each lens, so that the lens cylinder sticks on the V-shaped groove 2 . However, in this method, after the lens is processed, the UV glue needs to be removed to separate the lens from the V-groove 2 . The method of removing UV glue is generally to use hydrolysis to make the UV glue lose its viscosity. The time required for hydrolysis is longer, which will increase the time of lens processing; and the hydrolyzed lens cylinder, the hydrolyzate is easy to remain on the lens. If the UV glue is used for bonding to grind the other end, the bonding quality will be easily reduced, making it difficult for the lens to be fixed again.

Therefore, it is necessary to provide a jig and method for rounding lenses that are easy to fix the lenses.

【Content of invention】

A jig for rounding lenses will be provided as an example below.

A fixture for rounded lenses, which includes a body, the body is provided with a groove; a capillary structure is fixed on the groove; a groove is opened on the top of the capillary structure, and at least one suction hole; in addition, the surface of the capillary structure is sealed except the surface of the suction hole and the groove.

Compared with the prior art, the jig for rounded lenses has grooves on the capillary structure; during use, the holes on the surface of the capillary structure in the grooves can form a low-pressure area to adsorb the lens on the grooves. As long as the pressure difference remains unchanged during the processing process, the adsorption force of the lens fixed on the jig will not change, so it is easy to fix the lens; and when the processing of the lens is completed, the lens can be removed as long as the pressure difference is eliminated, eliminating the need to use UV glue. The additional glue removal process required to fix the lens and avoid possible problems caused by lens re-fixing. Therefore, the jig for rounding the lens has the advantage of being easy to fix the lens.

【Description of drawings】

Fig. 1 is a perspective schematic view of a lens cylinder before processing in the prior art.

Fig. 2 is a three-dimensional schematic diagram of a jig in the prior art.

FIG. 3 is a schematic perspective view of the jig for rolling lenses according to the first embodiment.

Fig. 4 is a sectional view along the direction IV-IV of Fig. 3 .

Fig. 5 is a sectional view along the V-V direction of Fig. 3 .

FIG. 6 is a schematic perspective view of the jig for rolling lenses according to the second embodiment.

Fig. 7 is a sectional view along the direction VII-VII of Fig. 6 .

Fig. 8 is a sectional view along the VIII-VIII direction of Fig. 6 .

【Detailed ways】

The jig for rolling lenses will be further described in detail with reference to the accompanying drawings and embodiments.

Please refer to Fig. 3 to Fig. 5 together, the jig 100 of the rounded lens of the first embodiment of the present invention comprises a body 101; There is a groove (not marked in the figure) that both ends penetrate in the body 101; Filled with a capillary structure 102; a substantially V-shaped groove 103 is provided at the top of the capillary structure 102, so that the capillary structure 102 has inclined surfaces 105, 106, and the groove 103 The two end faces of the capillary structure 102 (not shown in the figure) are penetrated; the surface of the capillary structure 102 is provided with a sealing structure 107, and the sealing structure 107 covers the surface of the capillary structure 102 outside the body 101 except the slopes 105 and 106, It is used to prevent the jig 100 from leaking air during vacuuming, and the specific requirement is that it can resist the pressure generated during vacuuming. The sealing structure 107 can be a coating made of paint. In addition, the sealing structure 107 is also provided with at least one suction hole 104, the suction hole 104 communicates with the capillary structure 102, and can extend to the inside of the capillary structure 102, which is used to connect with external vacuum equipment, The air suction hole 104 can also be set at any position on the side of the body 101; in order to make the vacuum inside the capillary structure 102 faster, the air suction hole 104 can also be set in multiples.

The capillary structure 102 has interconnected pores inside, and the interconnected pores are also communicated with the suction hole 104 . The material of the capillary structure 102 can be a material with a bicontinuous structure (that is, the pores are interconnected open structures), for example, the material of the capillary structure 102 is a porous material with a bicontinuous structure pore formed by metal sintering , the metal can be iron, aluminum, copper, nickel and cobalt or alloys thereof.

The shape of the groove 103 is not limited to the V shape in the figure, and it can be matched with the shape of the lens according to the shape of the lens to be processed; for example, the groove 103 can also be an arc groove, a U-shaped concave Grooves or other polygonal grooves, etc.

When in use, the lens cylinder is placed on the groove 103 and covers the slopes 105, 106. Since the pores of the capillary structure are distributed in a network, the force on the lenses on the slopes 105, 106 can be relatively uniform. After the air in the capillary structure 102 is extracted from the suction hole 104 with a vacuum device, the holes of the capillary structure 102 form a low-pressure zone, which has a pressure difference with the atmospheric pressure on the lens cylinder top and can generate adsorption force. The lens cylinder is fixed on the jig 100 .

And after use, because the lens is fixed by the adsorption force generated by the pressure difference, when the lens is to be taken off, it is only necessary to pass air into the capillary structure 102 to restore the pressure, so that the lens is eliminated due to the adsorption force generated by the pressure difference. The lens can be removed; avoiding the need for additional glue removal process and glue removal time due to the use of UV glue to fix the lens.

Please refer to FIG. 6 to FIG. 8 , the jig 200 for rolling lenses according to the second embodiment of the present invention includes a body 101 ′; different from the jig 100 of the first embodiment, there are two ends inside the body 101 ′ A non-penetrating groove (not marked in the figure); the groove is filled with a capillary structure 102'; a roughly V-shaped groove 103' is opened at the top of the capillary structure 102', from the longitudinal direction (that is, the length direction), the groove 103' runs through the two end faces 108', 109' of the body 101', and viewed from the lateral direction (ie width direction), the top groove width of the groove 103' can be less than or equal to the The width of the capillary structure 102'. The groove wall (not shown) of the groove of the main body 101' of the jig 200 can be sealed by cooperating with the capillary structure 102', so the capillary structure 102' does not need to be sealed with an additional sealing structure.

The method of using the jig 100 for rolling lenses includes the following steps:

In step 1, a plurality of lenses are stacked together to form a lens cylinder, which is put into the groove 103 of the jig 100 and the capillary structure 102 is sealed. When the lens cylinder is put in, the surface of the lens cylinder matches the slope of the groove 103 .

In the first step, when the length of the lens cylinder is long enough, the lens cylinder can completely cover the slopes 105, 106 of the capillary structure 102 in the groove 103; when the length of the lens cylinder is short enough to cover the slope of the capillary structure 102 For 105 and 106, since the pores of the capillary structure are distributed in a network shape, it is easy to use other materials to cover and seal the parts not covered by the lens cylinder. The part of the body that is not covered on the slopes 105, 106.

Step 2, extracting the air in the capillary structure 102 from the suction hole 104 to form a low pressure in the hole, so that the lens cylinder is adsorbed on the groove 103 . When pumping air, because the surface of the lens is relatively smooth, the lenses are tightly fitted, so the air is not easy to enter from the joint of the lens and affect the effect of vacuuming.

The pressure required for the low pressure depends on the shape of the lens. The specific requirement is that the adsorption force generated by the pressure difference between the low pressure and the atmospheric pressure can fix the lens on the jig and be sufficient to overcome the friction generated by the lens during grinding. Shear force.

The lens is fixed by the adsorption force generated by the pressure difference. As long as the low pressure remains unchanged, the adsorption force of the lens fixed on the jig will not change, so it is easy to provide enough force to fix the lens.

Step 3, grinding the lens cylinder.

Step 4, restore the pressure in the capillary structure 102, and remove the lens.

In the fourth step, gas can be injected into the capillary structure 102 to recover the pressure. Since the lens is fixed by the adsorption force generated by the pressure difference, when the lens needs to be removed, it is only necessary to inject air into the capillary structure 102 to restore the pressure, so that the adsorption force of the lens due to the pressure difference is eliminated, and the lens can be removed; Eliminates the need for additional glue removal process using UV glue to fix the lens, and avoids possible problems caused by lens re-fixing. It can be understood that when other parts of the lens also need to be ground, the above four steps can also be repeated to continue processing the part of the lens that needs to be ground.

Compared with the prior art, the groove 103 is arranged on the capillary structure 102 in the jig for the rounded lens; during use, the holes on the inclined surfaces 105, 106 of the capillary structure 102 in the groove 103 can form a low-pressure zone and the The lens is adsorbed on the groove 103 . As long as the pressure difference remains unchanged during the processing process, the adsorption force of the lens fixed on the jig will not change, so it is easy to fix the lens; and when the processing of the lens is completed, the lens can be removed as long as the pressure difference is eliminated, eliminating the need to use UV glue. The additional glue removal process required to fix the lens and avoid possible problems caused by lens re-fixing. Therefore, the jig for rounding the lens has the advantage of being easy to fix the lens.

Claims (9)

1. the tool of a rolling round glasses, it comprises a body, it is characterized in that, described body offers groove; Be installed with capillary structure on this groove; This capillary structure top offers a groove, and its inside possesses the hole that is interconnected; And at least one suction hole that is connected with the hole of this capillary structure inside; In addition, the surface of described capillary structure is except that the surface of described suction hole and described groove, and the other parts surface all seals.

2. the tool of rolling round glasses according to claim 1 is characterized in that the material of this capillary structure is the porous material of bicontinuous structure.

3. as the tool of rolling round glasses as described in the claim 2, it is characterized in that the porous material of the material of this capillary structure for forming by metal sintering.

4. as the tool of rolling round glasses as described in the claim 3, it is characterized in that this metal is iron, aluminium, copper, nickel and cobalt or its alloy.

5. the tool of rolling round glasses according to claim 1 is characterized in that this groove is arc groove, v-depression or U-shaped groove.

6. the tool of rolling round glasses according to claim 1 is characterized in that its sealing means is to seal by seal coating.

7. the tool of rolling round glasses according to claim 1 is characterized in that this suction hole extends to capillary structure inside.

8. the tool of rolling round glasses according to claim 1 is characterized in that, this suction hole is opened on the sidewall of this body or on the sealing surfaces of capillary structure.

9. the tool of rolling round glasses according to claim 1 is characterized in that this suction hole links to each other with vaccum-pumping equipment.

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