JP7212488B2 - Spectacle lens manufacturing apparatus and manufacturing method - Google Patents

Description

The present invention relates to a spectacle lens manufacturing apparatus and manufacturing method.

2. Description of the Related Art A device (so-called sticking device) is known for manufacturing a spectacle lens by sticking a tape member to a lens member. As this sticking device, the one described in Non-Patent Document 1 is known.

An outline of the sticking device described in Non-Patent Document 1 will be described with reference to FIGS. 1 and 2. FIG.
FIG. 1 is a schematic side sectional view of a conventional sticking device.
FIG. 2 is a schematic enlarged side view showing how a tape member is peeled off from a backing member in a conventional sticking device, and how the tape member is charged during peeling.

A long mounting paper member D and a long tape member T are attached to each other via an adhesive layer provided on one side of the tape member T, and are wound in a roll-like manner. The long tape member T wound like a roll is attached to the sticking device 100 . Specifically, the tape member T is set on the peeling roller 21 at the lower right of FIG.

Then, as shown in FIG. 1, the tape member T wound in a scroll shape is rolled by using the tape member winding roller 22 arranged on the left side and the mounting paper member winding roller 23 arranged above the peeling roller 21. tension. As a result, the tape member T is peeled off.

As shown in FIG. 2, in a state in which the tape member T is peeled from the mount member D, the mount member D is bent 180 degrees below the lower right peel roller 21 . Then, the folded mount member D is mounted on the mount member take-up roller 23 on the upper right in FIG. By rotating the peeling roller 21 and the mounting paper member winding roller 23 , the peeled mounting paper member D is wound up by the peeling roller 21 .

The tape member T is conveyed in the horizontal direction while being in contact with the upper portion of the pre-application conveying roller 31 arranged to the left of the peeling roller 21 .

The tape member T is positioned above the lens member L as the tape member T continues to be transported in the horizontal direction. Two lens members L are arranged side by side in the conveying direction of the tape member T and downward.

When the tape member T is positioned above the lens member L, the transport of the tape member T is temporarily stopped. Then, the lens holder 4 holding each lens member L from below is raised, and the adhesive layer of the tape member T and the lens member L are brought into contact with each other.

After that, a blade (not shown) arranged above the tape member T descends and cuts the tape member T below according to the contour shape of the surface of the lens member L.

After that, the lens holder 4 descends, and the transport of the used tape member T with the hole in the shape of the lens surface is resumed. The post-use tape member T passes between two post-application conveying rollers 32 that are arranged vertically side by side on the left side of the lens holder 4 and is wound up by the tape member winding roller 22 .

Optimal Optic Company HP (<http://www.optimal-optic.de/>)

As shown in FIG. 2, the tape member T is charged as it is peeled off. When the tape member T is electrically charged, it attracts foreign matter existing around it. In this case, the tape member T is attached to the lens member L with the foreign matter adhering to the tape member T, and the spectacle lens is manufactured. Such a spectacle lens becomes a defective product, which contributes to a decrease in yield.

SUMMARY OF THE INVENTION It is an object of one embodiment of the present invention to provide a technique for reducing the likelihood of foreign matter adhering to a tape member.

The present invention has been devised to achieve the above objects. Specifically, the following aspects have been devised based on the finding that the tape member is subjected to static elimination after peeling and before cutting and pasting.

A first aspect of the present invention is
A device for manufacturing a spectacle lens by attaching a tape member to a lens member,
a peeling mechanism for peeling the tape member by pulling the tape member wound in a scroll shape;
a neutralization mechanism for neutralizing the peeled tape member;
an affixing mechanism for affixing the tape member from which static electricity has been removed to the surface of the lens member;
A spectacle lens manufacturing apparatus comprising:

A second aspect of the present invention is the aspect according to the first aspect,
The static elimination mechanism is of a contact type.

A third aspect of the present invention is the aspect according to the second aspect,
The static elimination mechanism is a static elimination brush.

A fourth aspect of the present invention is the aspect according to the second aspect,
The static elimination mechanism has a cut in a portion that contacts the tape member.

A fifth aspect of the present invention is the aspect according to any one of the second to fourth aspects,
When the direction of the top and bottom is defined as upward and the direction of the earth is downward,
The neutralization mechanism is arranged above the tape member in a tensioned state.

A sixth aspect of the present invention is the aspect according to the fifth aspect,
When the direction of the top and bottom is defined as upward and the direction of the earth is downward,
The sticking mechanism has a lens holder that holds the lens member,
The lens holder is positioned below the tape member in tension.

A seventh aspect of the present invention is the aspect according to any one of the second to sixth aspects,
The spectacle lens manufacturing apparatus further includes a conveying mechanism that conveys the peeled tape member to the attaching mechanism.

An eighth aspect of the present invention is the aspect according to the seventh aspect,
A portion where the neutralization mechanism contacts the tape member and a portion where the pre-application conveying roller, which is a part of the conveying mechanism, contacts the tape member do not face each other.

A ninth aspect of the present invention is the aspect according to any one of the second to eighth aspects,
The neutralization mechanism is arranged to be suspended.

A tenth aspect of the present invention is the aspect according to the ninth aspect,
When the direction of the top and bottom is defined as upward and the direction of the earth is downward,
The vertical dimension of the static elimination mechanism when the portion where the static elimination mechanism contacts the tape member is defined as the lower end is greater than the vertical distance from the tape member in the tensioned state to the upper end of the static elimination mechanism in the suspended state. The static elimination mechanism is arranged so that the .DELTA.
In other words, the direction extending from the upper end to the lower end of the static elimination mechanism forms an acute angle (preferably 5 to 60°, more preferably 10 to 45° as shown in FIG. 3) or an obtuse angle with respect to the transport direction of the tape member. (preferably 95 to 150°, more preferably 100 to 135°). An acute angle is particularly preferred.

An eleventh aspect of the present invention is the aspect according to any one of the first to tenth aspects,
It further comprises a cutting mechanism for cutting the tape member from which static electricity has been removed.

A twelfth aspect of the present invention is
A method for manufacturing a spectacle lens by attaching a tape member to a lens member,
a peeling step of peeling the tape member by putting the tape member wound in a roll into a tensioned state;
a static elimination step of static eliminating the peeled tape member;
an affixing step of affixing the neutralized tape member to the surface of the lens member;
a cutting step of cutting the tape member from which static electricity has been removed;
A method for manufacturing a spectacle lens, comprising:

A thirteenth aspect of the present invention is the aspect according to the twelfth aspect,
Before the peeling step, the long resin tape member and the long resin base paper member are attached to each other through an adhesive layer provided on one side of the tape member, and wound into a roll. It is written.

According to one embodiment of the present invention, it is possible to provide a technique for reducing the likelihood of foreign matter adhering to the tape member.

FIG. 1 is a schematic side sectional view of a conventional sticking device. FIG. 2 is a schematic enlarged side view showing how a tape member is peeled off from a backing member in a conventional sticking device, and how the tape member is charged during peeling. FIG. 3 is a schematic side cross-sectional view of a sticking device according to one embodiment of the present invention.

In this specification, the "eyeball side surface" of the spectacle lens refers to a surface (e.g., concave surface) arranged on the eyeball side when spectacles having the spectacle lens are worn by the wearer. "Face" refers to a face (eg, convex face) located on the object side.
In this specification, when the direction of the top and bottom is defined as upward and the direction of the ground is defined as downward,
In this specification, "-" represents a predetermined numerical value or more and a predetermined numerical value or less.

Embodiments of the present invention will be described below. Contents not described in detail below are assumed to be the same as the configuration of the device described in Non-Patent Document 1 or the configuration of the known application device 100 .

[Spectacle lens manufacturing apparatus according to one aspect of the present invention]
An eyeglass lens manufacturing apparatus according to an aspect of the present invention includes:
A device for manufacturing a spectacle lens by attaching a tape member T to a lens member L,
a peeling mechanism for peeling the tape member T by pulling the tape member T wound in a scroll shape;
a neutralizing mechanism for neutralizing the peeled tape member T;
an affixing mechanism for affixing the tape member T from which static electricity has been removed to the surface of the lens member L;
is a spectacle lens manufacturing device (hereinafter also referred to as a sticking device 1).

FIG. 3 is a schematic side cross-sectional view of the sticking device 1 of one embodiment of the present invention.

The configuration of the peeling mechanism is not particularly limited as long as the tape member T can be peeled off by pulling the tape member T wound like a roll. In one aspect of the present invention, the tape member take-up roller 22 and the mount member take-up roller 23 in the apparatus described in Non-Patent Document 1 correspond to this.

When the mount member D is not used, in other words, the adhesive layer is provided on one side of the tape member T like a cellophane tape (registered trademark), and a release layer coated with a release agent is provided on the other side. When using a roll of T wound around a core, only the tape member take-up roller 22 may be provided as the peeling mechanism.

In addition to the apparatus described in Non-Patent Document 1, there is a manual application apparatus in which the tape member T is pulled by an operator. In the case of this manual sticking device, at least one part of the peeling mechanism is the part where the operator pulls the tape member T and holds the tape member T in that state (the part where the tape member is cut off in terms of cellophane tape (registered trademark)). It corresponds to the department.

The structure of the static elimination mechanism is not particularly limited as long as the static electricity of the tape member T can be eliminated. There is no particular limitation on the mode of removal, either, and static electricity may be neutralized by corona discharge.

The configuration of the sticking mechanism is not particularly limited as long as it sticks the tape member T from which static electricity has been removed to the surface of the lens member L. As shown in FIG. In one aspect of the present invention, the lens holder 4 referred to in the apparatus described in Non-Patent Document 1 corresponds to this.

According to this aspect of the present invention, the removed tape member T is neutralized by the neutralization mechanism. As a result, a technique for reducing the possibility of foreign matter adhering to the tape member T can be provided.

[Preferred example and modified example of spectacle lens manufacturing apparatus according to one aspect of the present invention]
Hereinafter, preferred examples of one aspect of the present invention will be described, and details of the configuration of the spectacle lens according to one aspect of the present invention will be described.

As for a specific mode of the static elimination mechanism, for example, a voltage application type static eliminator (hereinafter also referred to as an ionizer) can be used as a non-contact static elimination mechanism that does not come into direct contact with the tape member T. mentioned. When using an ionizer, static elimination is performed by blowing ionized air.

On the other hand, it is preferable to use a contact-type static elimination mechanism as a specific mode of the static elimination mechanism. A contact-type static elimination mechanism does not require a large-scale device compared to a non-contact static elimination mechanism, and can be easily incorporated into the existing sticking device 100 .

In addition, compared to a static elimination mechanism that blows air like an ionizer, it is sufficient to bring the static elimination mechanism into contact with the tape member T. This means that foreign matter (for example, shavings of spectacle lenses) in the atmosphere does not roll up when air is blown, and the possibility of foreign matter adhering to the tape member T can be further reduced.

As for a specific aspect of the contact-type static elimination mechanism, for example, the use of a static elimination brush 5 can be mentioned. Briefly explaining the principle of the static elimination brush 5, the brush portion is brought into contact with an object whose static electricity is to be removed while the brush portion is energized through the handle portion. As a result, the static electricity on the object to be removed causes corona discharge with the electrons in the brush portion, and the static electricity is removed. In addition, the static elimination brush 5 should just use a well-known thing. For example, Denkytol®, among other commercial products, may be used.

As for another specific aspect of the contact-type static elimination mechanism, for example, use of a static elimination non-woven fabric can be mentioned. As with the static elimination brush 5, the non-woven fabric for static elimination is brought into contact with an object whose static electricity is to be removed while the non-woven fabric for static elimination is energized. A known static eliminating non-woven fabric may be used. For example, Thunderon (registered trademark) may be used among other commercially available products.

When the static elimination mechanism is a non-woven fabric for static elimination, a cut may be made in a portion of the non-woven fabric for static elimination that comes into contact with the tape member T. As shown in FIG. As a result, the non-woven fabric for static elimination becomes like a noren, faithfully following the shape of the tape member T, and the non-woven fabric for static elimination can be brought into good contact with the tape member T.

As shown in FIG. 3, the spectacle lens manufacturing apparatus further includes a conveying mechanism that conveys the peeled tape member T to the attaching mechanism. In one aspect of the present invention, the transport rollers 31 before application and the transport rollers 32 after application described in Non-Patent Document 1 correspond to the transport mechanism. In the case of the manual sticking device described above, the transport is performed by pulling the tape member T by the operator. Transport mechanisms such as pre-application transport rollers 31 and post-application transport rollers 32 may be provided to assist transport.

Whether it is the sticking device 100 as described in Non-Patent Document 1 or the manual sticking device described above, the tape member T is in a tensioned state. In one aspect of the present invention, it is preferable that the neutralization mechanism is arranged above the tape member T in a tensioned state. As a result, the static elimination mechanism can be brought into contact with the tape member T simply by fixedly arranging or suspending it from above.

When the neutralizing mechanism is arranged above the tape member T in the tensioned state, the lens holder 4 that holds the lens member L, which is at least a part of the sticking mechanism, is arranged below the tape member T in the tensioned state. preferably. As a result, when the tape member T is set in the sticking device 1 of one aspect of the present invention, the adhesive layer present on one side of the tape member T faces downward and faces the object-side surface (convex surface) of the lens member L. . Then, the static elimination mechanism comes into contact with the other side of the tape member T (the release side, where the adhesive layer is not present). In other words, it is possible to prevent foreign matter from adhering to the adhesive layer due to the presence of the static elimination mechanism.

In addition, it is preferable to employ a configuration in which the portion where the static elimination mechanism contacts the tape member T and the portion where the pre-application conveying roller 31, which is a part of the conveying mechanism, contacts the tape member T do not face each other. This is because, for example, when static electricity is removed using corona discharge, the influence of the pre-application conveying roller 31 can be eliminated.

When the static elimination mechanism is arranged above the tape member T in the tensioned state, it is preferable that the static elimination mechanism is suspended. By arranging the neutralizing mechanism in a suspended manner, the neutralizing mechanism is configured to be swingable in a pendulum manner along a rotation axis perpendicular to the conveying direction of the tape member T on the horizontal plane. As a result, even if the tape member T sways in the vertical direction when it is conveyed in the horizontal direction, the neutralization mechanism can swing in a pendulum manner by its own weight, so the neutralization mechanism faithfully follows the sway. Then, the static elimination mechanism can be in good contact with the tape member T.

The vertical dimension of the static elimination mechanism when the portion of the static elimination mechanism that contacts the tape member is defined as the lower end is greater than the distance from the tape member T being transported to the top end of the static elimination mechanism in the suspended state. is preferred. As a result, when the static elimination mechanism is set in a suspended state within the sticking apparatus 1, the lower end of the static elimination mechanism, that is, the electrified portion for static elimination, comes into contact with the tape member T obliquely. In other words, the direction extending from the upper end to the lower end of the static elimination mechanism forms an acute angle (preferably 5 to 60°, more preferably 10 to 45° as shown in FIG. 3) or an obtuse angle with respect to the transport direction of the tape member. (preferably 95 to 150°, more preferably 100 to 135°). An acute angle is particularly preferred. As a result, the static elimination mechanism follows the vibration of the tape member T more faithfully, and the static elimination mechanism can contact the tape member T better.

Contrary to the above configuration, another aspect of the present invention also includes bringing the static elimination mechanism upward and in contact with the tape member T. FIG. Further, when the tape member T is conveyed in the vertical direction, another aspect of the present invention includes bringing the electric mechanism into contact with the tape member T from the horizontal direction.

One aspect of the invention preferably further comprises a tear-off mechanism. The configuration of the cutting mechanism is not particularly limited as long as it can cut the tape member T from which static electricity has been removed. In one aspect of the present invention, the blade (not shown) arranged above the tape member T in the apparatus described in Non-Patent Document 1 corresponds to this. In one aspect of the present invention, a blade disposed above the tape member T descends and cuts the tape member T below in accordance with the contour shape of the surface of the lens member L.

As mentioned above, in the case of a manual pasting device in which an operator pulls the tape member T, instead of providing the device with a cutting mechanism, the operator manually cuts the tape member T into the contour shape of the surface of the lens member L. You can cut it to fit.

[Method for manufacturing spectacle lens according to one aspect of the present invention]
A method for manufacturing a spectacle lens according to one aspect of the present invention comprises:
A method for manufacturing a spectacle lens by attaching a tape member T to a lens member L,
a peeling step of peeling the tape member T wound in a roll shape by pulling the tape member T;
A static elimination step of static eliminating the tape member T that has been peeled off;
an affixing step of affixing the neutralized tape member T to the surface of the lens member L;
a cutting step of cutting the tape member T from which static electricity has been removed;
A method for manufacturing a spectacle lens, comprising:
Hereinafter, a method for manufacturing a spectacle lens according to one aspect of the present invention will be described. Contents that are not described below are the same as those described in the above-described [Spectacle lens manufacturing apparatus according to one aspect of the present invention].

First, as a preparatory step, the tape member T wound like a roll is set on the sticking device 1 . A specific example is as follows.
A tape member T wound like a roll including a mount member D is set on a peeling roller 21. - 特許庁
Then, the tip of the tape member T is fixed to the tape member take-up roller 22 . At this time, the lens holder 4 to which the lens member L having the object side surface (convex surface) is fixed is placed between the tape member winding roller 22 and the peeling roller 21 . The lens holder 4 is placed below the tape member T in tension.
Also, the tip of the mount member D is fixed to the mount member take-up roller 23 .

Then, a peeling step is performed in which each roller is operated to pull the tape member T wound like a roll, thereby peeling the tape member T. As shown in FIG. In one aspect of the invention, this stripping is performed continuously.

In that case, if both the mounting paper member D and the tape member T are made of resin, the effects of the present invention can be enjoyed more effectively. Many of the existing tape members T are made of resin, and the mount member D is made of paper. However, according to the inventor's research, it was found that the amount of static electricity increases when the mount member D is also made of resin. was taken. However, even if the amount of static electricity increases, the effect of the present invention can be obtained without any problem if it is an aspect of the present invention.

Then, the destaticizing step is performed to destaticize the stripped tape member T. As shown in FIG. In one aspect of the present invention, the neutralizing mechanism is arranged above the tape member T and brought into contact with the tape member T. FIG. Since the peeling process is continuously performed, the static elimination process is also continuously performed.

Then, a sticking step of sticking the tape member T from which the charge has been removed to the surface of the lens member L is performed. In one aspect of the present invention, transportation of the tape member T is temporarily stopped, the lens holder 4 is raised, and the convex surface of the lens member L and the adhesive layer of the tape member T are brought into contact with each other.

Then, a cutting step is performed to cut the tape member T from which static electricity has been removed. In one aspect of the present invention, after the pasting step, the blade disposed above the tape member T is lowered and the tape member T below is cut according to the contour shape of the surface of the lens member L.

Note that the order of the attaching step and the cutting step does not matter. For example, it is also possible to cut the tape member T after the continuous static elimination according to the contour shape of the surface of the lens member L, and then attach the cut tape member T to the surface of the lens member L. Also, the sticking process and the cutting process may be performed at the same time. Specifically, the tape member may be cut off by an annular blade provided on the lens holder at the same time when the lens member and the tape member are attached together in the attaching step.

Using the sticking device 1 according to one aspect of the present invention (FIG. 3 employing a swingable static elimination brush 5), the above manufacturing method was carried out at a temperature of 20 to 22° C. and a humidity of 40 to 50%. Compared to the case without 5, the static electricity voltage could be lowered by 3.0 to 4.5 kV.
Incidentally, in the above example, the electric voltage could be reduced by 1.0 kV as compared with the case where the neutralizing brush 5 is fixed vertically to the tape member T instead of being swingable.
In any case, it has become clear that the possibility of foreign matter adhering to the tape member T can be reduced by adopting one aspect of the present invention.

REFERENCE SIGNS LIST 1 Pasting device 21 Peeling roller 22 Tape member winding roller 23 Mounting member winding roller 31 Pre-pasting transport roller 32 Post-pasting transport roller 4 Lens holder 5 Neutralizing brush T Tape member D Mounting member L... Lens member 100... (Known) sticking device

Claims (6)

A device for manufacturing a spectacle lens by attaching a tape member to a lens member,
a peeling mechanism for peeling the tape member from the backing member by pulling the tape member wound in a scroll shape;
a static elimination mechanism that eliminates static electricity from the peeled tape member in a contact manner ;
an affixing mechanism for affixing the tape member from which static electricity has been removed to the surface of the lens member, the affixing mechanism having a lens holder for holding the lens member ;
a conveying mechanism that conveys the peeled tape member to the sticking mechanism;
with
The static elimination mechanism is provided between the peeling mechanism and the sticking mechanism,
It does not have a static elimination mechanism that blows air,
When the direction of the top and bottom is defined as upward and the direction of the earth is downward,
The static elimination mechanism is arranged above the tape member in a pulled state and in a peeled state,
the lens holder is arranged below the tape member in a pulled state and in a peeled state;
the static elimination mechanism is a static elimination brush or a static elimination non-woven fabric;
The static elimination mechanism is suspended, and the direction in which the static elimination mechanism extends from the upper end to the lower end of the tape member when the lower end of the static elimination mechanism comes into contact obliquely with respect to the traveling direction of the tape member is A spectacle lens manufacturing apparatus that forms an acute or obtuse angle with respect to the direction of travel . The static elimination mechanism is a static elimination non-woven fabric,
2. The eyeglass lens manufacturing apparatus according to claim 1 , wherein said static elimination mechanism has a cut in a portion that contacts said tape member. 3. The spectacle lens manufacturing apparatus according to claim 1, further comprising a cutting mechanism for cutting said static-eliminated tape member. A pre-application transport roller, which is part of the transport mechanism, is arranged below the tape member in a pulled state and in a peeled state,
4. The spectacles according to any one of claims 1 to 3 , wherein a portion where the static elimination mechanism contacts the tape member and a portion where the pre-application conveying roller, which is a part of the conveying mechanism, contacts the tape member do not face each other. Lens manufacturing equipment. A method for manufacturing a spectacle lens by attaching a tape member to a lens member,
a peeling step of peeling the tape member from the mount member by pulling the tape member wound in a scroll shape;
a conveying step of conveying the peeled tape member;
a static elimination step of contact-eliminating the stripped tape member during the conveying step using a static elimination mechanism ;
an affixing step of affixing the neutralized tape member to the surface of the lens member;
a cutting step of cutting the tape member from which static electricity has been removed;
has
It does not have a static elimination process that blows air,
When the direction of the top and bottom is defined as upward and the direction of the earth is downward,
disposing the static elimination mechanism above the tape member that is in a tensioned state and is in a peeled state;
disposing the lens member below the tape member that is in a tensioned state and is in a peeled state;
the static elimination mechanism is a static elimination brush or a static elimination non-woven fabric;
When the static elimination mechanism is arranged in a suspended state and the bottom end of the static elimination mechanism is brought into contact obliquely with respect to the traveling direction of the tape member, the direction extending from the top end to the bottom end of the static elimination mechanism is the tape member. A method for manufacturing a spectacle lens that forms an acute or obtuse angle with respect to the direction of travel . Before the peeling step, the long resin tape member and the long resin base paper member are attached to each other through an adhesive layer provided on one side of the tape member, and wound into a roll. 6. The method for manufacturing the spectacle lens according to claim 5 , wherein the spectacle lens is

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