JP2020062696A - Spectacle lens peeling method and peeling device - Google Patents

Abstract

To provide a technique for peeling a spectacle lens from a flexible member with the spectacle lens regardless of the shape of the spectacle lens.SOLUTION: A spectacle lens peeling method and the related technique thereof are provided, having a spectacle lens fixation releasing process for releasing fixation between a flexible member 102 and a spectacle lens 100 by bending the flexible member 102 toward the spectacle lens 100 with respect to the flexible member with a spectacle lens including the flexible member 102 and the spectacle lens 100 having an optical surface fixed to the flexible member 102.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a method for peeling a spectacle lens and a peeling device.

  The manufacturing process of a spectacle lens includes a cutting process and a polishing process of a spectacle lens (specifically, a semi-finished lens in which one of both surfaces is optically finished). Both of these steps are often performed by a spectacle lens processing apparatus. This spectacle lens is held by a holder. Next, this holder is installed in the processing apparatus. Then, at least one of a cutting step and a polishing step (hereinafter referred to as a processing step or simply processing) is performed on this spectacle lens.

  For example, as shown in FIG. 1 of Patent Document 1 and the like, the holder includes a base installed in an eyeglass lens processing apparatus and a low melting point metal member. This low-melting-point metal member is fixed to the base, has a shape following the optical surface of the spectacle lens, and has a lower melting point than the base. Hereinafter, the base will be referred to as a fixture. The low melting point metal member is preferably made of a low melting point alloy, and is therefore referred to as an alloy. When the holder is installed in the processing device, the shape following the optical surface of the eyeglass lens in the alloy and the optical surface of the eyeglass lens (semi-finished lens) before the processing step are fixed via the protective film. ing. After the processing step, the holder with the spectacle lens is removed from the processing device. The spectacle lens is then deblocked from the holder.

  Patent Document 2 discloses a technique relating to the removal of the spectacle lens. The device described in Patent Document 2 is a device for peeling a lens attached to a holder via an alloy, and includes a fixing mechanism for fixing the holder and a peeling member rotatable about a shaft portion. The lens is attached with at least a part of the outer peripheral portion extending outward from the outer edge of the alloy, and the holding mechanism is fixed by the fixing mechanism, and the shaft portion of the extended portion of the lens is provided. Characterized in that the lens is peeled from the alloy by rotating the peeling member in the direction of pulling the lens away from the holder while the peeling member is in contact with the portion opposite to the holder from the holder side. ([0010] of Patent Document 2).

  According to the above configuration, by rotating the peeling member in a state where the peeling member is in contact with the portion of the lens extending from the alloy on the side opposite to the shaft portion, the lens elastically deforms, and first, The contacting portion of the peeling member is peeled off from the alloy, and then the peeling gradually progresses to the entire lens. Therefore, it is not necessary to apply a large impact to the lens in order to peel the lens, and the lens is less likely to be cracked. Further, since the lens can be peeled from the alloy simply by rotating the peeling member, deblocking can be performed in a short time without trouble (Patent Document 2 [0011]).

JP, 2010-284761, A JP, 2008-103301, A

  According to the device described in Patent Document 2, it is premised that the spectacle lens extends outward beyond the outer edge of the alloy when the holder with spectacle lens is viewed from the side of the spectacle lens. On the other hand, depending on the shape of the ordered spectacle frame, the spectacle lens may have a shape that does not extend further than the outer edge of the alloy. Such a shape is also called a knife edge.

  FIG. 1 is a schematic side sectional view of a holder with a spectacle lens, in which the spectacle lens does not extend outward beyond the outer edge of the alloy. The spectacle lens has a reference numeral 100, the protective film has a reference numeral 101, the alloy has a reference numeral 102, and the holder has a reference numeral 104. Hereinafter, these symbols may be omitted.

  In the case shown in FIG. 1, the peeling member referred to in Patent Document 2 cannot contact the lens. As a result, even if the peeling member is rotated, the lens cannot be separated from the alloy.

  An embodiment of the present invention aims to provide a technique for separating an eyeglass lens from a flexible member with an eyeglass lens regardless of the shape of the eyeglass lens.

  The present invention has been devised to achieve the above object. Specifically, it is utilized that the low melting point metal member (alloy) that is relatively easily deformed is fixed to the spectacle lens. In particular, the alloy takes advantage of its flexibility. The following modes have been devised based on the finding that the alloy is deformed by bending the alloy, and the adhesion between the two is released by forming a gap on the contact surface with the spectacle lens.

The first aspect of the present invention is
A flexible member with a spectacle lens including a flexible member and a spectacle lens having an optical surface fixed to the flexible member, the flexible member being flexed toward the spectacle lens side. It is a method of peeling a spectacle lens, which includes a spectacle lens fixation releasing step of releasing fixation between a member and the spectacle lens.

A second aspect of the present invention is the aspect described in the first aspect,
The spectacle lens-equipped flexible member is a spectacle lens-equipped holder further comprising a retainer that is fixed to the flexible member on the side opposite to the spectacle lens with the flexible member interposed therebetween,
The method further includes a holder fixing release step in which the fixing between the holder and the flexible member is released by further bending the flexible member toward the spectacle lens side.

A third aspect of the present invention is the aspect described in the first or second aspect,
The spectacle lens-equipped flexible member is a spectacle lens-equipped holder further comprising a retainer that is fixed to the flexible member on the side opposite to the spectacle lens with the flexible member interposed therebetween,
The eyeglass lens fixation releasing step,
A fixing step of fixing the holder,
After the fixing step, a contacting step of contacting a peeling member rotatable around a shaft portion with the flexible member,
After the contacting step, a peeling step of peeling the spectacle lens from the flexible member by rotating the peeling member in a direction of bending the flexible member toward the spectacle lens side,
Have.

A fourth aspect of the present invention is the aspect described in any one of the first to third aspects,
When the flexible member with a spectacle lens is viewed from the side of the spectacle lens, the spectacle lens does not extend outward from the outer edge of the flexible member or the maximum extension distance is less than 15 mm (or 12 mm or less, Furthermore, it is 10 mm or less).

A fifth aspect of the present invention is
A flexible member with a spectacle lens including a flexible member and a spectacle lens having an optical surface fixed to the flexible member, the flexible member being bent by bending the flexible member toward a spectacle lens side. And a spectacle lens fixation releasing mechanism for releasing fixation between the spectacle lens and the spectacle lens.

A sixth aspect of the present invention is the aspect described in the fifth aspect,
The spectacle lens-equipped flexible member is a spectacle lens-equipped holder further comprising a retainer that is fixed to the flexible member on the side opposite to the spectacle lens with the flexible member interposed therebetween,
The eyeglass lens fixation releasing mechanism,
A fixing mechanism for fixing the holder,
A peeling member rotatable about the shaft,
Equipped with
The holding mechanism is fixed by the fixing mechanism, and the spectacle lens is peeled from the flexible member by rotating the peeling member in a direction in which the flexible member is bent toward the spectacle lens.

  According to one embodiment of the present invention, it is possible to provide a technique for separating an eyeglass lens from a flexible member with an eyeglass lens regardless of the shape of the eyeglass lens.

FIG. 1 is a schematic cross-sectional view of a holder with a spectacle lens, in which the spectacle lens does not extend outward beyond the outer edge of the alloy. FIG. 2 is a schematic plan view of the lens peeling device according to the embodiment according to the aspect of the present invention. FIG. 3 is a schematic front view (partial cross-sectional view) of the lens peeling device according to the embodiment according to the aspect of the present invention. FIG. 4 is a schematic front view showing a manner of peeling a spectacle lens from an alloy by the lens peeling device according to one aspect of the present invention. FIG. 5 is a schematic front view showing a state in which an alloy is peeled from a toy by the lens peeling device according to one aspect of the present invention.

In the present specification, the “eyeball-side surface” of the spectacle lens means a surface (for example, a concave surface) arranged on the eyeball side when the spectacles including the spectacle lens are worn by the wearer, The “surface” means a surface (for example, a convex surface) arranged on the object side.
In the present specification, the spectacle lens before cutting and polishing is also referred to as a semi-finished lens.
In this specification, the upward direction is the upward direction and the downward direction is the upward direction.

  Hereinafter, embodiments of the present invention will be described. In the embodiment of the present invention, when compared with the aspect described in Patent Document 2, the peeling member rotatable about the shaft is brought into contact with the alloy instead of the spectacle lens, and the peeling member is There is a big difference in rotating. Therefore, one aspect of the present invention is the same as the device configuration described in Patent Document 2 except for the peeling member. All the contents described in Patent Document 2 are used for the contents that are not described in detail below.

[Peeling Device and Peeling Method for Eyeglass Lenses According to One Embodiment of the Present Invention]
An apparatus for peeling a spectacle lens according to an aspect of the present invention includes a flexible member and a spectacle lens having an optical surface fixed to the flexible member, with respect to the flexible member with a spectacle lens, the flexible member. And a spectacle lens fixation releasing mechanism that releases the fixation between the flexible member and the spectacle lens by bending the lens toward the spectacle lens.

  The step of releasing the fixation between the flexible member and the spectacle lens by the spectacle lens fixation releasing mechanism is referred to as a spectacle lens fixation releasing step.

  The flexible member can be fixed to the optical surface of the spectacle lens (to be precise, fixed to the optical surface to which the protective sheet is attached), and is not particularly limited as long as it has flexibility. In one aspect of the present invention, a low melting point metal member (alloy) is used as the flexible member.

  The spectacle lens fixation releasing mechanism is not particularly limited as long as it is brought into contact with the flexible member (alloy) and the flexible member (alloy) is bent toward the spectacle lens side by a physical external force.

  With the eyeglass lens peeling device according to the aspect of the present invention, the eyeglass lens fixation releasing mechanism does not need to directly apply a physical external force to the eyeglass lens. Therefore, the spectacle lens can be peeled off even in a state where the spectacle lens does not extend outward beyond the outer edge of the alloy.

  Further, since the spectacle lens is peeled off without melting the alloy, various problems associated with melting of the alloy (contamination of atmosphere, increase in the amount of alloy to be discarded, etc.) can be avoided.

  Even when the spectacle lens extends outwardly from the outer edge of the alloy, the spectacle lens can be peeled off by bending the alloy toward the spectacle lens side by a physical external force. Therefore, the present invention is not limited to the case of handling a so-called knife-edge shaped spectacle lens.

[Preferable Examples and Modifications of the apparatus and method for removing the spectacle lens according to one aspect of the present invention]
Hereinafter, details, preferable examples, and modified examples of one embodiment of the present invention will be described.

  The spectacle lens-equipped flexible member may be a spectacle lens-equipped holder further comprising a holder that is fixed to the flexible member on the side opposite to the spectacle lens with the flexible member interposed therebetween. This holder is also called yatoy and plays the role of a base. That is, the flexible member (alloy) is sandwiched between the eye toy and the spectacle lens (semi-finished lens before processing) to serve as an adhesive.

  By the way, when processing with a processing device, after fixing the toy to the processing device, the semi-finished lens is processed together with the alloy in some cases. At that time, as described above, depending on the shape of the finally obtained eyeglass lens, when the flexible member with the eyeglass lens is viewed from the side of the eyeglass lens, the eyeglass lens is It will not extend further than the outer edge. If the maximum extension distance is less than 15 mm even if it is extended outward, the device described in Patent Document 2 separates the spectacle lens from the peeling member during rotation even if the peeling member is caught by the spectacle lens. I will end up. This is especially true when the maximum extension distance is 12 mm or less, and further 10 mm or less. However, according to one aspect of the present invention, the spectacle lens can be peeled off by bending the alloy toward the spectacle lens side by a physical external force.

  It is preferable that the eyeglass lens fixation releasing mechanism includes a fixing mechanism for fixing the holder and a peeling member rotatable about a shaft. Then, the holder is fixed by the fixing mechanism (fixing step in the spectacle lens fixation releasing step), and a peeling member rotatable about a shaft is brought into contact with the flexible member (contacting step). It is preferable to include a configuration for peeling the spectacle lens from the flexible member by rotating the peeling member in a direction in which the flexible member is bent toward the spectacle lens (peeling step).

Hereinafter, one embodiment of the present invention will be described in detail.
2 and 3 show a lens peeling device according to an embodiment of the present invention, FIG. 2 is a plan view, and FIG. 3 is a front view. Note that the presser mechanism 9 is omitted in FIG. Further, in FIG. 3, a sectional view taken along line XX ′ of FIG. 2 is depicted around the fixing mechanism 4.

  As shown in FIG. 1, a protective film 101 is attached to one surface of a spectacle lens 100, and a holder 104 is attached via an alloy 102. The spectacle lens 100 is, for example, a spectacle lens and is made of a plastic material. The case where the spectacle lens 100 does not extend outward from the outer edge of the alloy 102, or even if it extends outward, the maximum extension distance is less than 15 mm is illustrated. The surface of the spectacle lens 100 to which the holder 104 is attached is preliminarily formed into a predetermined shape, and the other surface is subjected to polishing processing based on design data according to the individual customer's prescription. .

  As shown in FIGS. 2 and 3, the lens peeling device 1 includes a pedestal portion 2, a fixing mechanism 4 for fixing a holder fixed to the eyeglass lens, and a peeling mechanism 6 for peeling the eyeglass lens from the alloy. An actuator 8 for driving the peeling mechanism 6 and a pressing mechanism 9 attached to the peeling mechanism 6 are provided.

  The pedestal portion 2 has a rectangular flat plate shape. The fixing mechanism 4 is provided on one end side of the pedestal portion 2. The fixing mechanism 4 includes a clamp cylinder 10, a connecting member 11, a clamp chuck 12, and a support member 14. The clamp cylinder 10 is a device for driving the clamp chuck 12, and is provided below the pedestal portion 2. The clamp cylinder 10 has a piston 10A that can move back and forth in the vertical direction, and the piston 10A projects above the pedestal portion 2 through an opening formed in the pedestal portion 2. The support member 14 is a substantially rectangular parallelepiped member, and is arranged above the pedestal portion 2. A substantially cylindrical through hole 14A is formed in the support member 14, and the piston 10A of the clamp cylinder 10 extends into the through hole 14A.

  The clamp chuck 12 has a truncated cone-shaped grip portion 12A and a cylindrical shaft portion 12B coaxially connected to the lower surface of the grip portion 12A. A columnar opening 12C having an opening on the upper surface is formed in the grip portion 12A. Further, the grip portion 12A and the shaft portion 12B are formed with screw holes 12D so as to reach from the bottom surface of the opening portion 12C to the lower surface of the shaft portion 12B. Further, a plurality of slits 12G are radially formed on the grip portion 12A. The slit 12G extends from the outer periphery of the grip portion 12A to an intermediate point between the peripheral surface of the opening 12C and the screw hole 12D.

  An annular groove 12E is formed around the shaft 12B on the lower surface of the grip 12A. An annular edge 12F on the outer peripheral side of the groove 12E is in contact with the upper surface of the support member 14. The shaft portion 12B is connected to the screw hole 10B of the piston 10A of the clamp cylinder 10 using the connecting member 11.

  With such a configuration, when the piston 10A of the clamp cylinder 10 is retracted, the shaft portion 12B pulls the central portion of the grip portion 12A downward through the connecting member 11, and the grip portion 12A has the upper edge around the edge portion 12F. Bends toward the inside in the radial direction. Further, when the tensile load applied to the shaft portion 12B of the clamp chuck 12 by the clamp cylinder 10 is removed from such a state, the clamp chuck 12 returns to its original shape due to elasticity, and the upper edge of the grip portion 12A is radially moved. Spread outwards.

  The peeling mechanism 6 includes a support member 16 provided upright on the pedestal portion 2, a first peeling member 18 rotatably provided with respect to the support member 16, and a first peeling member placed on the first peeling member 18. And two peeling members 19. The second peeling member 19 is arranged so that the opening 19G of the second peeling member 19 is concentric with the semicircle of the opening 18G of the first peeling member 18.

  The support member 16 is formed of a plate-shaped member and is provided upright on the end side of the fixing mechanism 4 of the pedestal portion 2. The support member 16 has a pair of shaft portions 16A that laterally protrude from both sides of the upper portion.

  The first peeling member 18 has a rectangular peeling member main body 18B and an extension portion 18A connected to the peeling member main body 18B. An opening 18G is formed in the peeling member body 18B. The opening 18G has a rectangular shape on the base end side (left side in FIGS. 2 and 3) and a semicircular shape on the tip end side (right side in FIGS. 2 and 3). In addition, a pair of elongated holes (not shown) reaching the side surface from the opening 18G are formed on the base end side of the first peeling member 18. The long hole penetrates in the lateral direction and has a cross-sectional shape that extends in the longitudinal direction of the first peeling member 18. The shaft portions 16A formed on the side surfaces of the support member 16 are inserted into the pair of long holes, respectively. As a result, the first peeling member 18 is rotatable about the shaft portion 16A with respect to the support member 16 and is movable in the longitudinal direction with respect to the shaft portion 16A. A guide groove (not shown) extending in the longitudinal direction is formed on the lower surface of the extension portion 18A.

  One of the major features of one aspect of the present invention is that the second peeling member 19 is provided. The second peeling member 19 has a wedge shape, and a semicircular notch opening 19G is formed at the tip of the wedge. The opening 19G, that is, the semicircular arc portion also has a wedge shape. This is for facilitating the second peeling member 19 to sink between the alloy and the toy.

  The diameter of the opening 19G is set to be smaller than the maximum diameter of the alloy. That is, the opening portion 19G of the second peeling member 19 has a smaller diameter than the opening portion 18G of the peeling member main body 18B of Patent Document 2 which is supposed to be brought into contact with the spectacle lens. Then, the second peeling member 19 contacts the alloy instead of the spectacle lens.

  Note that, in one aspect of the present invention, the case where the second peeling member 19 is added to the (first) peeling member 18 described in Patent Document 2 is illustrated, but the first peeling member 18 described in Patent Document 2 is illustrated. The diameter of the opening 18G may be reduced. The first peeling member 18 may contact the alloy instead of the eyeglass lens.

  The actuator 8 is provided at the end of the pedestal portion 2 opposite to the fixing mechanism 4. The actuator 8 has a piston 8A that can move back and forth. The tip of the piston 8A of the actuator 8 is arranged in the guide groove of the first peeling member 18.

  The holding mechanism 9 is attached to one surface of a support member 20 provided upright on the upper surface of the first peeling member 18, a rotating member 22 connected to the supporting member 20 via a hinge member 26, and a rotating member 22. And a pressing member 24. The rotating member 22 extends from a state in which it extends from the upper end of the support member 20 in parallel with the first peeling member 18 toward the actuator 8 side to a state in which it extends from the support member 20 toward the fixing mechanism 4, as shown in FIG. It is rotatable. The pressing member 24 is made of an elastic member such as sponge.

  The eyeglass lens is peeled off using the peeling device 1 described above. Since a specific method is described in Patent Document 2, description thereof will be omitted.

  FIG. 4 is a schematic front view showing a state in which a spectacle lens is peeled from an alloy by the lens peeling device 1 according to one aspect of the present invention. The description of the protective film is omitted.

  Squeezing and saying, the first peeling member 18 and the second peeling member 19 in the peeling mechanism 6 are rotated by raising the piston 8A while contacting the alloy which is a flexible member (black arrow in FIG. 3). ), Deform the alloy (enclosed by the dotted line in FIG. 4). Thereby, as shown in FIG. 4, a gap V is formed on the contact surface with the spectacle lens. As a result, the fixation between the spectacle lens and the alloy is released, and the spectacle lens is separated from the alloy.

  FIG. 5 is a schematic front view showing how the alloy peeling device 1 according to one embodiment of the present invention peels an alloy from a toy. The description of the protective film is omitted.

  In one aspect of the present invention, as shown in FIG. 5, by further bending the flexible member (alloy) toward the spectacle lens, the fixation between the holder and the flexible member (alloy) is released. It is also preferable to further perform the holder fixing release step. As a result, when the alloy is removed from the holder, it is not necessary to melt the alloy. As a result, various problems associated with melting the alloy (contamination of atmosphere, increase in the amount of alloy to be discarded, etc.) can be avoided.

  In one aspect of the present invention, as in the device described in Patent Document 2, that is, as shown in FIG. 3, the spectacle lens is peeled off by utilizing the principle of leverage, but the present invention is not limited to this aspect. . For example, the alloy may be deformed by pressing the alloy from both sides using a mechanism such as a vise to peel off the spectacle lens.

1 Lens Peeling Device 2 Pedestal 4 Fixing Mechanism 6 Peeling Mechanism 8 Actuator 8A Piston 9 Holding Mechanism 10 Clamp Cylinder 10A Piston 11 Connecting Member 12 Clamp Chuck 12A Grip 12B Shaft 12C Opening 12D Screw Hole 12E Groove 12F Edge 12G Slit 14 Supporting Member 14A Through Hole 16 Supporting Member 16A Shaft 18 First Peeling Member 18A Extension 18B Peeling Member Main Body 18G Opening 19 Second Peeling Member 19G Opening (Notch)
20 Support Member 22 Rotating Member 24 Holding Member 26 Hinge Member 100 Eyeglass Lens 101 Protective Film 102 Flexible Member (Alloy)
104 Holder (Yatoi)
V gap

Claims (6)

  A flexible member with a spectacle lens including a flexible member and a spectacle lens having an optical surface fixed to the flexible member, the flexible member being flexed toward the spectacle lens side. A spectacle lens peeling method, comprising a spectacle lens fixation releasing step of releasing fixation between a member and the spectacle lens. The spectacle lens-equipped flexible member is a spectacle lens-equipped holder further comprising a retainer that is fixed to the flexible member on the side opposite to the spectacle lens with the flexible member interposed therebetween,
The method for peeling a spectacle lens according to claim 1, further comprising a holder fixing release step of releasing the fixation between the holder and the flexible member by further bending the flexible member toward the spectacle lens. . The spectacle lens-equipped flexible member is a spectacle lens-equipped holder further comprising a retainer that is fixed to the flexible member on the side opposite to the spectacle lens with the flexible member interposed therebetween,
The eyeglass lens fixation releasing step,
A fixing step of fixing the holder,
After the fixing step, a contacting step of contacting a peeling member rotatable around a shaft portion with the flexible member,
After the contacting step, a peeling step of peeling the spectacle lens from the flexible member by rotating the peeling member in a direction of bending the flexible member toward the spectacle lens side,
The method for peeling a spectacle lens according to claim 1 or 2, further comprising:   When the flexible member with a spectacle lens is viewed from the side of the spectacle lens, the spectacle lens does not extend outward from the outer edge of the flexible member or the maximum extension distance is less than 15 mm. The method for peeling a spectacle lens according to any one of 1 to 3.   A flexible member with a spectacle lens including a flexible member and a spectacle lens having an optical surface fixed to the flexible member, the flexible member being bent by bending the flexible member toward a spectacle lens side. A spectacle lens peeling device having a spectacle lens fixation releasing mechanism for releasing fixation between the spectacle lens and the spectacle lens. The spectacle lens-equipped flexible member is a spectacle lens-equipped holder further comprising a retainer that is fixed to the flexible member on the side opposite to the spectacle lens with the flexible member interposed therebetween,
The eyeglass lens fixation releasing mechanism,
A fixing mechanism for fixing the holder,
A peeling member rotatable about the shaft,
Equipped with
The holding mechanism is fixed by the fixing mechanism, and the spectacle lens is peeled from the flexible member by rotating the peeling member in a direction in which the flexible member is bent toward the spectacle lens side, The spectacle lens peeling device according to claim 5.