JP2019141926A - Method and apparatus for processing spectacle lens holder and method for manufacturing spectacle lens - Google Patents

Abstract

To provide a technology for melting an anchorage between a low-melting point metal member (alloy) and a bed (auxiliary appliance) while suppressing the melting of the low-melting point metal member (alloy).SOLUTION: A method for processing a holder of a spectacle lens, which comprises a bed, installed on a spectacle lens processor, and a low-melting point metal member, anchored on the bed, having a shape following the optical plane of a spectacle lens, and having a lower melting point than the bed, and which is a method for processing a spectacle lens holder, is provided, as well as a related technology of the same having a heating step of heating the bed and an anchorage releasing step of transferring heat from the bed into the low-melting point metal member to partially melt the low-melting point metal member in a vicinity of the bed, thereby releasing the anchorage points of both.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for processing a spectacle lens holder, a processing apparatus, and a method for manufacturing a spectacle lens.

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

  For example, as shown in FIG. 1 of Patent Document 1, the holder includes a base and a low-melting-point metal member that are installed in a spectacle lens processing apparatus. The low-melting-point metal member is fixed to the base, has a shape that follows the optical surface of the spectacle lens, and has a lower melting point than the base. Hereinafter, the foundation is referred to as a fixture. The low melting point metal member is preferably made of a low melting point alloy and is therefore called an alloy. When the holder is installed in the processing apparatus, the shape following the optical surface of the spectacle lens in the alloy and the optical surface of the spectacle lens (semi-finished lens) before the processing step are fixed through a protective film. ing.

  After the processing step, the holder with the spectacle lens is removed from the processing apparatus. The spectacle lens is then deblocked from the holder. 2. Description of the Related Art There is known an apparatus that continuously removes spectacle lenses from a plurality of holders with spectacle lenses. In this conventional apparatus, high temperature water is brought into contact with the entire holder with spectacle lenses. As a result, the alloy is melted to separate the spectacle lens and the yatoy.

JP 2010-284761 A

  In the case of the conventional device, molten alloy is contained in the high-temperature water (drainage) after contacting the entire holding device with spectacle lens. Moreover, since the spectacle lens is continuously removed from the plurality of holders with spectacle lenses, a large amount of alloy is contained in the drainage. This causes the following problems.

One problem is as follows. There is a possibility that the atmosphere is polluted by the waste water in which the alloy is melted in large quantities. In other words, before the protective film is applied to the optical surface that is optically finished in the spectacle lens (semi-finished lens) before the processing step, there is a possibility that a contaminated foreign substance may adhere to the optical surface. As a result, the quality of the spectacle lens after completion may be reduced. Moreover, there is a possibility that the production yield of the spectacle lens is lowered.
Moreover, the yatoy after the removal of the spectacle lens is usually reused. During reuse, foreign matter originating from the molten alloy may remain attached to the entire yatoy due to the scattering of the waste water. This foreign matter may contaminate the atmosphere. Then, when a protective film is applied to the spectacle lens, there is a possibility that a foreign substance derived from a contaminated atmosphere adheres to the spectacle lens.

  Another problem is as follows. The alloy in the drainage collects at the bottom of the drainage container. The accumulated alloy can be collected and reused. However, the molten alloy may oxidize due to oxygen in the waste water. Oxidized alloys have a melting point that changes, hardness decreases, and bubbles are easily formed when a holder is formed, and cannot be reused. After the alloy is newly supplemented according to the amount of the oxidized alloy, another spectacle lens (semi-finished lens) before processing is held by the alloy. Replenishing the alloy adds cost. Moreover, the expense which processes the oxidation alloy which is industrial waste also increases.

Yet another problem is workability for alloys and yatoys. It is possible to recover the molten alloy from the waste water. On the other hand, the alloy is in a molten state in the wastewater, and it is necessary to collect the alloy by leaving the bottom of the drainage container. There is a possibility that the oxidized alloy mentioned above is mixed in the molten alloy in the waste water. In this state, it is difficult to extract only the non-oxidized alloy.
Moreover, when the molten alloy is contained in the waste water, the Yatoi may become dirty as described above. There are several types of Yatoi. When a yatoy becomes dirty, it becomes difficult to distinguish the appearance of each type when separating the yatoy by type.
As a result, the conventional apparatus is required to improve workability for alloys and yatoys.

  Each of the above problems is caused by the fact that molten alloy is included in the waste water. Accordingly, an object of an embodiment of the present invention is to provide a technique for releasing the adhesion between a low melting point metal member (alloy) and a base (yato) while suppressing melting of the low melting point metal member (alloy).

The present invention has been devised to achieve the above object.
The first aspect of the present invention is:
A base installed in a processing apparatus for eyeglass lenses;
A low melting point metal member fixed to the base and having a shape following the optical surface of the spectacle lens, and having a melting point lower than that of the base;
A processing method for a holder for a spectacle lens comprising:
A heating step of heating the foundation;
Transferring heat from the base to the low-melting point metal member, and fixing the low-melting point metal member in the vicinity of the base to partially melt the sticking release step to release both;
This is a method for processing a spectacle lens holder.

A second aspect of the present invention is the aspect described in the first aspect,
The heating step and the debonding step are performed by a dry method in which the low melting point metal member is not brought into contact with a liquid.

A third aspect of the present invention is the aspect described in the first or second aspect,
In the heating step, the base is heated by an electromagnetic induction heating mechanism.

A fourth aspect of the present invention is the aspect according to any one of the first to third aspects,
In the fixing release step, the base and the low melting point metal member are separated from each other by a holding mechanism that holds at least one of the base and the low melting point metal member.

A fifth aspect of the present invention is the aspect described in any one of the first to fourth aspects,
A base installed in a processing apparatus for eyeglass lenses;
A low melting point metal member fixed to the base and having a shape following the optical surface of the spectacle lens, and having a melting point lower than that of the base;
A processing device for a spectacle lens holder comprising:
A heat source for generating heat for heating the base;
The heat source transmits heat to the low-melting-point metal member fixed to the base, and partially melts the low-melting-point metal member in the vicinity of the base to release the fixation between the two. It is a processing device.

A sixth aspect of the present invention is the aspect described in the fifth aspect,
The heat source is an electromagnetic induction heating mechanism.

A seventh aspect of the present invention is the aspect described in the fifth or sixth aspect,
A holding mechanism that holds at least one of the base and the low-melting-point metal member is further included, and the base and the low-melting-point metal member are separated by the holding mechanism.

The eighth aspect of the present invention is
The low-melting-point metal member reused by the base and the low-melting-point metal member released from fixing by the eyeglass lens holder processing method according to any one of the first to fourth aspects, and fixed to the base again. A spectacle lens fixing step of fixing the spectacle lens to the melting point metal member;
A spectacle lens processing step of processing the spectacle lens fixed to the low melting point metal member with the spectacle lens processing apparatus;
A method for manufacturing a spectacle lens.

  Hereinafter, another embodiment of the present invention will be described. You may combine each said aspect suitably with respect to the following aspect.

According to another aspect of the present invention,
The holding mechanism is a method for processing a spectacle lens holder, comprising: a base holding part that holds the base; and a low melting point metal member holding part that holds the low melting point metal member.

According to another aspect of the present invention,
The heating step is a method for processing a spectacle lens holder, which is performed by bringing a heat source into contact with a covering member that covers the base.

According to another aspect of the present invention,
The heating step is a processing method for a spectacle lens holder, which is performed by immersing the base in a liquid having a melting point of the low melting point metal member or higher.

According to another aspect of the present invention,
The electromagnetic induction heating mechanism includes an induction coil arranged around the base, a thermocouple in contact with the base, a temperature controller connected to the thermocouple, and a predetermined set by the temperature controller. And an IH controller that controls electric power supplied to the induction coil so that the base is heated to the temperature of the eyeglass lens.

According to another aspect of the present invention,
The holding mechanism is a spectacle lens holder processing apparatus including a base holding mechanism for holding the base and a low melting point metal member holding mechanism for holding the low melting point metal member.

According to another aspect of the present invention,
The heating step is a processing device for a spectacle lens holder, which is performed by bringing a heat source into contact with a covering member that covers the base.

According to another aspect of the present invention,
The heat source is a thermostatic bath,
An apparatus for processing a spectacle lens holder, further comprising a holding mechanism that holds at least one of the base and the low-melting-point metal member, and holds the base in the thermostatic bath for heating the base. is there.

According to another aspect of the present invention,
The electromagnetic induction heating mechanism includes an induction coil arranged around the base, a thermocouple in contact with the base, a temperature controller connected to the thermocouple, and a predetermined set by the temperature controller. And an IH controller for supplying electric power to the induction coil so that the base is heated to a temperature of the eyeglass lens.

  In addition, the following another aspect is also mentioned.

In yet another aspect of the present invention,
The foundation,
A low melting point metal member that is fixed to the base and has a melting point lower than that of the base;
A processing method for a jig provided with
A heating step of heating the foundation;
Transferring heat from the base to the low-melting point metal member, and fixing the low-melting point metal member in the vicinity of the base to partially melt the sticking release step to release both;
This is a jig processing method.
Preferably, the jig is a lens holder, the base is installed in a lens processing apparatus, and the low melting point metal member has a shape following the optical surface of the lens.

In yet another aspect of the present invention,
The foundation,
A low melting point metal member fixed to the base and having a shape following the optical surface of the spectacle lens, and having a melting point lower than that of the base;
A processing apparatus for a jig comprising:
A heat source for generating heat for heating the base;
The heat source transmits heat to the low-melting-point metal member fixed to the base and partially melts the low-melting-point metal member in the vicinity of the base, thereby unfixing the both, and a jig processing apparatus It is.
Preferably, the jig is a lens holder, the base is installed in a lens processing apparatus, and the low melting point metal member is a jig processing apparatus having a shape following the optical surface of the lens.

  In still another embodiment of the present invention, a material having a low melting point (or low glass transition temperature) and other than a metal (for example, wax or resin) may be used instead of the low melting point metal member. . In the holder processing method, the processing apparatus, and the spectacle lens manufacturing method according to each of the above embodiments, the description of “low melting point metal member (alloy)” may be replaced with “wax or resin”. The description of “low melting point metal member (alloy)” may be replaced with “low melting point member” so as to include metal materials and non-metal materials. The “low melting point metal member (alloy)” may be replaced with the “copy member”.

  According to an embodiment of the present invention, it is possible to provide a technique for releasing the adhesion between a low melting point metal member (alloy) and a base (yato) while suppressing melting of the low melting point metal member (alloy).

FIG. 1 is a schematic view of a processing device for a spectacle lens holder when a heat source is an electromagnetic induction heating mechanism in the present embodiment.

  In this specification, “to” represents a predetermined numerical value or more and a predetermined numerical value or less.

The eyeglass lens holder processing method according to the present embodiment (specifically, a method for separating Yatoi from an alloy) has the following configuration.
A base installed in a processing apparatus for eyeglass lenses;
A low melting point metal member (alloy) fixed to the base and having a shape following the optical surface of the spectacle lens, and having a melting point lower than that of the base (yato);
A processing method for a holder for a spectacle lens comprising:
A heating step of heating the base (yato);
Heat is transferred from the base (yatoy) to the low melting point metal member (alloy), and the low melting point metal member (alloy) in the vicinity of the base (yatoy) is partially melted to release the fixation between them. A debonding step;
A method for processing a spectacle lens holder, comprising:

  The holder includes a base (yato) and a low melting point metal member (alloy). Yatoi is installed in a spectacle lens processing apparatus. The alloy is sandwiched between Yatoi and the pre-processed spectacle lens (semi-finished lens; the same applies to the pre-processed spectacle lens hereinafter) and serves as an adhesive. In addition, it is good to affix a protective film with respect to the optical surface of the spectacles lens (semi-finished lens) before a process. Thereafter, the yatoi in the holder with the spectacle lens is installed in the processing apparatus. Then, the spectacle lens is processed by the processing device. At that time, depending on the case, a spectacle lens (semi-finished lens) is processed together with the alloy.

  The alloy adheres to the yatoy, has a shape that follows the optical surface of the spectacle lens (semi-finished lens), and has a lower melting point than the yatoy.

  The optical surface of this spectacle lens (semi-finished lens) is an optically finished eyeball side surface or object side surface.

The reason why the melting point of the alloy is made lower than that of the yatoy is that the yatoe itself is not melted when heat is transmitted to the alloy via the yatoy by intensively heating the yatoy.
The temperature difference between the melting point of the alloy and the melting point of Yatoi is not particularly limited as long as the fixing release process described below can be performed without hindrance, for example, preferably 50 ° C or higher, more preferably 100 ° C or higher, and 500 ° C or higher. Is more preferable.

  Examples of the material for Yatoi include metals such as stainless steel, aluminum, and iron. Examples of the alloy material include an alloy of Bi, Pb, Sn, In, and Ga (melting point at this time is about 60 ° C.), and it is preferable that Pb is not included. However, there is no particular limitation on the material of the yatoy and the material of the alloy as long as the relationship between the melting points of the above-mentioned yatoi and the alloy is satisfied and the heating process and the debonding process described later can be performed. Further, the low melting point metal member may not be an alloy, and may be a single element metal of the above listed elements. However, if an electromagnetic induction heating mechanism is employed in the heating process, it is better to make the metal toy so that it can be heated.

  After the processing of the spectacle lens by the processing apparatus, the holder with the spectacle lens is removed from the processing apparatus. Then, the processed spectacle lens is removed from the holder with the spectacle lens. Then, the heating process which heats the yatoy in this embodiment is performed. In addition, it does not prevent performing a heating process with respect to the holder with which the spectacle lens has adhered. However, in order to suppress the effect of heat on the spectacle lens, it is better to remove the spectacle lens first. As a method for removing the spectacle lens, a known method may be used.

  In the present embodiment, heat is transferred from the yatoy to the alloy by the heating step. Then, an adhesion releasing step for releasing the adhesion between the yatoi and the alloy is performed by partially melting the alloy in the vicinity of the yatoi.

  “Partially melting” refers to melting only the interface portion of the alloy with Yatoi. “Alloy in the vicinity of Yatoi” refers to an interface portion with Yatoi in the alloy.

  “Unlocking the bond between the yatoi and the alloy” means that the solid alloy is separated from the solid yatoe, that is, the entire alloy is not melted when the bond is released. Point to. In other words, in the present embodiment, only the interface portion between the alloy and the yatoy is melted to separate the yatoi from the alloy. In the present embodiment, this local melting is realized by concentrated heating of the yatoy and the transfer of heat to the alloy (particularly the interface with the yatoy) via the yatoy.

  Through the above steps, it is possible to release the adhesion between the alloy and the yatoy while suppressing the melting of the alloy. Accordingly, the possibility of occurrence in the conventional device can be suppressed. That is, the possibility that molten alloy is contained in the waste water can be suppressed.

  As a result, as one effect, the contamination of the atmosphere can be suppressed, and the possibility of foreign matter adhering to the spectacle lens can be suppressed. Moreover, when the yatoy after releasing the adhesion between the alloy and the yatoi is reused, the possibility that foreign matter adheres to the whole yatoi can be suppressed. Therefore, the possibility of reducing the quality of the spectacle lens after completion can be suppressed, and the possibility of reducing the production yield of the spectacle lens can be suppressed.

  As another effect, since the melting amount of the alloy can be kept low, the generation amount of the oxidized alloy generated from the molten alloy can be kept low. Therefore, the frequency of newly refilling the alloy is reduced, and the cost is reduced. In addition, the cost for treating oxidized alloy, which is industrial waste, is reduced.

As another effect, workability with respect to alloys and yatoi is improved. As mentioned above, the alloy melts only at the interface with Yatoi, and the other parts remain solid. Therefore, it becomes possible to store the alloy in a separate container while remaining almost solid. That is, it is possible to avoid a state in which the molten alloy is immersed in the waste water, which is assumed in the conventional apparatus. Moreover, the operation | work which draws the bottom of a waste_water | drain container and collect | recovers a molten alloy becomes unnecessary. Further, as described above, the recovered almost solid alloy contains almost no molten alloy. In the first place, the state where the molten alloy remains immersed in the wastewater is avoided. As a result, the recovered almost solid alloy contains almost no oxidized alloy.
In addition, as described above, the possibility that the yatoy becomes dirty can be suppressed. Therefore, after separation of the yatoi and the alloy in the present embodiment, it becomes possible to easily separate the yatoi for each type.

  In the liquid state, the alloy rises to a temperature above its melting point until it reaches its boiling point. On the other hand, in the solid state, the temperature is close to the melting point. In other words, as long as even the interface portion of the alloy with the yatoi can be locally raised in temperature beyond the melting point, the portion other than the interface portion of the alloy can be separated from the yatoi while remaining in a solid state. This embodiment takes advantage of this property.

  Hereafter, the suitable example in this embodiment is given.

  As a specific method of the heating process, a method of intensively heating the yatoe by an electromagnetic induction heating mechanism (hereinafter also referred to as an IH mechanism) is given. By adopting the IH mechanism, it is possible to greatly shorten the separation time between the Yatoi and the alloy.

FIG. 1 is a schematic diagram of a processing device 11 of a spectacle lens holder 1 when an IH mechanism is used as a heat source in the present embodiment. Hereinafter, a description will be given with reference to FIG.
The portion of the alloy 3 in FIG. 1 that contacts the alloy holding portion 5 actually has a shape that follows the optical surface of the spectacle lens. Since the yatoy 2 is held so as to be hidden inside the yatoi holding portion 4, it is indicated by a broken line.
For convenience of explanation, the reference numerals in the specification are omitted as appropriate except for the first appearance.

  The IH mechanism 6 is not particularly limited as long as it can perform electromagnetic induction heating on the yatoy 2 intensively, and a known one may be adopted. The IH mechanism is set by, for example, an induction coil 7 arranged around the yatoi, a thermocouple 8 in contact with the yatoi, a temperature regulator 9 connected to the thermocouple, and the temperature regulator. And an IH controller 10 that controls electric power supplied to the induction coil so that the yatoy is heated to a predetermined temperature. At this time, only Yatoi is placed inside the induction coil. However, it is permissible when only a part of the alloy (for example, up to 1 to 2 mm in the thickness direction) at the interface portion between Yatoi and Alloy 3 is present inside the induction coil.

  When an IH mechanism is provided, it is not necessary to contact the alloy with high-temperature water in the heating step and the debonding step. Further, when the IH mechanism is provided, the yatoy need not be in contact with the liquid. That is, when the IH mechanism is provided, the heating step and the sticking releasing step are performed in a completely dry manner.

  In the sticking releasing step, the sticking of the both may be released by the free fall of the alloy (or yatoi). However, it is preferable that the yatoi and the alloy are forcibly separated by a holding mechanism that holds at least one of the yatoi and the alloy. With this configuration, work time can be shortened. Further, in the case of free fall, the possibility that the atmosphere is slightly contaminated by scattering of the molten part of the alloy accompanying the separation or impact of the drop is not zero. On the other hand, the possibility of such contamination can be suppressed by providing a holding mechanism.

  The holding mechanism preferably includes a yatoi holding unit 4 for holding the yatoy and an alloy holding unit 5 for holding the alloy. With this configuration, the work time can be considerably shortened.

  There is no particular limitation on the material of the yatoi holding part, and for example, resin can be used. If it is a resin, it will not be heated even if it is present in the induction coil of the IH mechanism. If the yatoy is made of metal, only the yatoi held in the induction coil holding part in the induction coil is heated by the IH mechanism.

  In order to make it difficult for the heat transmitted to the yatoy to escape, it is preferable that the thermal conductivity of the yatoi holding portion be equal to or lower than that of the yatoi. Moreover, it is good to make a yatoy holding part heat resistant.

  There is no particular limitation on the method for holding the yatoy, and examples thereof include vacuum suction and a chuck method.

  There is no limitation in the raw material of an alloy holding part, For example, resin is mentioned. Moreover, there is no limitation in particular as a method of hold | maintaining an alloy, For example, a vacuum suction and a chuck system are mentioned.

  Hereinafter, an example of the operation of the IH controller when the IH mechanism is used will be described with reference to FIG.

  First, the yatoi is placed in the induction coil together with the yatoi holding part. On the other hand, the alloy held by the alloy holding part is disposed below the induction coil. And the alloy holding | maintenance part is raised and this alloy is hold | maintained in an alloy holding | maintenance part using a vacuum suction or a chuck system.

  In addition, although the alloy holding | maintenance part is dropped in FIG. 1, the displacement direction of an alloy holding | maintenance part should just be set arbitrarily according to the direction of a holder. Further, in addition to the alloy holder, the yatoi holder may be displaced in a direction in which the yatoi and the alloy are separated from each other. Further, the alloy holder may not be displaced, and the yatoi holder may be displaced.

  After the alloy is held, the output of the IH controller (for example, the maximum output of 1 kW in this embodiment) is turned on while lowering the alloy holding portion, and the yatoy is heated by the induction coil. During heating, the temperature controller controls the output of the IH controller while measuring the temperature of the yatoi with a thermocouple attached to and in contact with the yatoi holding unit. What is necessary is just to set the preset temperature of a temperature controller more than melting | fusing point of an alloy, for example, you may set to 80-100 degreeC.

  By heating the yatoy, the alloy on the surface in contact with the yatoy is locally melted. When the alloy is locally melted, the alloy is separated from the yatoy in a short time by the action of pulling the alloy downward by the alloy holding portion. The alloy holding part descends when the sticking between the yatoy and the alloy is released. This drop is detected by a sensor (not shown), and the output of the IH controller is turned off based on the detection result.

  And a yatoy is removed from a yatoi holding part, and a series of operation is ended.

  As another specific method of the heating step, there is a method of bringing a heat source into contact with the yatoi through a covering member (not shown) that covers the yatoy. By providing the cover member, the heat from the heat source can be transmitted to the Yatoi without escaping into the atmosphere. Then, heat is transferred to the alloy (particularly the interface with the yatoy) via the yatoy. This “over the cover member” includes providing the cover member with a structure in which the heat source directly contacts the yatoy. In addition, although the heat source does not come into direct contact with the yatoy, it is also included to provide the cover member with a structure in which the heat source and the yatoi are separated from each other by a distance that allows heat to be sufficiently transferred to the yatoy. The material for the covering member may be arbitrary. However, it is preferable that the heat of the heat source is not released into the atmosphere by the covering member. Therefore, a material having a relatively low thermal conductivity (a material having a thermal conductivity lower than (preferably less than that of Yatoi)) may be used as a material for the covering member. An example of this material is stainless steel.

  As another specific method of the heating step, there is a method of immersing the Yatoi in a liquid (eg, high-temperature water, oil, etc.) having a melting point of the alloy or higher. Here, only Yatoi is immersed in the liquid. The heat of the liquid is transmitted to the yatoy, and the heat is transmitted to the alloy (particularly the interface with the yatoi) via the yatoi. However, it is permissible when only a part of the alloy (for example, up to 1 to 2 mm in the thickness direction) at the interface between the yatoi and the alloy comes into contact with the liquid.

  In the case of adopting this configuration, the alloy need not be brought into contact with high-temperature water in the heating step and the debonding step. However, Yatoi will come into contact with the liquid. For this reason, the heating step and the debonding step are performed not in a completely dry type as in the case of providing an IH mechanism but in a partially dry type. As used herein, “dry” includes completely dry and partially dry. In the case of completely dry or partially dry, at least the alloy hardly comes into contact with the liquid, so that the above-described effects can be exhibited particularly. On the other hand, in the completely dry type, both the alloy and the yatoi have substantially no chance of contact with the liquid. Therefore, the completely dry method is preferable.

The above content is the processing method of the eyeglass lens holder. On the other hand, the technical idea of the present invention is also reflected in the eyeglass lens holder processing apparatus. The eyeglass lens holder processing apparatus according to the present embodiment has the following configuration.
“The foundation (Yatoi) installed in the eyeglass lens processing equipment,
A low melting point metal member (alloy) that is fixed to the base (Yatoi), has a shape that follows the optical surface of the spectacle lens, and has a lower melting point than the base (Yatoi);
A processing device for a spectacle lens holder comprising:
A heat source for generating heat for heating the base (Yatoi),
The heat source causes heat to be transferred to the low melting point metal member (alloy) fixed to the base (yato), and partially melts the low melting point metal member (alloy) in the vicinity of the base (yato). The processing device for the eyeglass lens holder, which unfastens them. "

The contents described in the processing method for the spectacle lens holder can also be applied to the processing apparatus for the spectacle lens holder. For example, the heat source is an IH mechanism.
Further, in the above-described method in which a heat source is brought into contact with the yatoi through the covering member covering the yatoi, the heat source is a heater (eg, a soldering iron or the like) (not shown).
Further, in the above-described method of immersing the yatoi in a liquid having a melting point higher than that of the alloy, the heat source is a thermostat (not shown). In this case, heat is transmitted from the liquid heated by the thermostat to the yatoy, and the heat is transmitted to the alloy (particularly, the interface portion with the yatoy) via the yatoi. In this case, it is preferable to further include a holding mechanism for holding at least one of the yatoy and the alloy and holding the yatoi in the thermostatic bath in order to heat the yatoy. With this configuration, the heat of the liquid can be stably transmitted to the yatoy.

The technical idea of the present invention is also reflected in the method of manufacturing a spectacle lens. The manufacturing method of the spectacle lens in the present embodiment has the following configuration.
“The low-melting-point metal that has been fixed to the base (Yatoi) again by reusing the base (Yatoi) and the low-melting-point metal member (alloy) that has been fixedly released by the processing method of the eyeglass lens holder A spectacle lens fixing step of fixing a spectacle lens to a member (alloy);
A spectacle lens processing step of processing the spectacle lens fixed to the low melting point metal member (alloy) with the spectacle lens processing apparatus;
A method of manufacturing a spectacle lens. "

  According to the above spectacle lens manufacturing method, the same effects as described in the spectacle lens holder processing method can be obtained. That is, it becomes possible to release the adhesion between the alloy and the yatoy while suppressing the melting of the alloy. Accordingly, the possibility of occurrence in the conventional device can be suppressed. That is, the possibility that molten alloy is contained in the waste water can be suppressed.

  As a result, the possibility of reducing the quality of the spectacle lens after completion can be suppressed, and the possibility of reducing the production yield of the spectacle lens can be suppressed. In addition, the frequency of newly refilling the alloy is reduced and the cost is reduced. In addition, the cost for treating oxidized alloy, which is industrial waste, is reduced. And the workability | operativity with respect to an alloy and a yatoi improves. Further, after separation of the yatoi and the alloy in the present embodiment, it becomes possible to easily separate the yatoi for each type.

  In addition, the reuse of the yatoy is possible by washing the yatoi after being separated from the alloy. The alloy is reused as follows, for example. The almost solid alloy is separated and recovered and then melted together. A yatoi and a spectacle lens (semi-finished lens) are arranged so as to sandwich a blocking ring as a mold, and a molten alloy is poured inside the blocking ring, that is, between the yatoi and the spectacle lens (semi-finished lens). Then, it cools and solidifies and an alloy is produced.

  The technical scope of the present invention is not limited to the above-described embodiments, and various modifications and improvements may be added within the scope of deriving specific effects obtained by the constituent requirements of the invention and combinations thereof. Including.

  For example, in the present embodiment, a processing method and a processing apparatus for a spectacle lens holder have been described. On the other hand, the technical idea of the present invention is reflected not as a spectacle lens holder but also as a lens holder for uses other than spectacle lenses. In addition, the technical idea of the present invention is reflected from the viewpoint of separating the yatoi and the alloy even if it is not a holder but a jig.

The configuration of the jig processing method based on the above viewpoint is as follows.
“With the foundation (Yatoi)
A low-melting-point metal member (alloy) that adheres to the base (yato) and has a lower melting point than the base (yato);
A processing method for a jig provided with
A heating step of heating the base (yato);
Heat is transferred from the base (yatoy) to the low melting point metal member (alloy), and the low melting point metal member (alloy) in the vicinity of the base (yatoy) is partially melted to release the fixation between them. A debonding step;
A jig processing method. "
Preferably, the jig is a lens holder, the base is installed in a lens processing apparatus, and the low melting point metal member (alloy) has a shape following the optical surface of the lens.

Moreover, the structure of the processing apparatus of the jig | tool based on the said viewpoint is as follows.
“With the foundation (Yatoi)
A low melting point metal member (alloy) that is fixed to the base (Yatoi), has a shape that follows the optical surface of the spectacle lens, and has a lower melting point than the base (Yatoi);
A processing apparatus for a jig comprising:
A heat source for generating heat for heating the base (Yatoi),
The heat source causes heat to be transferred to the low melting point metal member (alloy) fixed to the base (yato), and partially melts the low melting point metal member (alloy) in the vicinity of the base (yato). Jig processing equipment that unfastens both. "
Preferably, the jig is a lens holder, the base (yato) is installed in a lens processing apparatus, and the low melting point metal member (alloy) has a shape following the optical surface of the lens.

  Furthermore, although the low melting point metal member is used in the present embodiment, a material having a low melting point (or a low glass transition temperature) and a material other than metal may be used. Examples of this material include a wax or resin having a low melting point (or low glass transition temperature). Even in the case of wax or resin, the problems regarding suppression of atmospheric contamination, securing of reusable materials, and workability arise in the same manner as in the case of a low melting point metal member (alloy). And even if the description of “low melting point metal member (alloy)” is replaced with “wax or resin” in the holder processing method, the processing apparatus, and the spectacle lens manufacturing method according to this embodiment, each problem Can be solved. Even if the description of “low melting point metal member (alloy)” is replaced with “low melting point member” so as to include metal materials and non-metal materials, each problem can be solved. When this modified example is applied, the low melting point metal member (alloy) has a shape following the optical surface so as to include not only the metal material but also the resin material. The description of “member (alloy)” may be replaced with “copy member”.

DESCRIPTION OF SYMBOLS 1 ... Holding tool 2 ... Yatoi 3 ... Alloy 4 ... Yato holding part 5 ... Alloy holding part 6 ... IH mechanism 7 ... Inductive coil 8 ... Thermocouple 9 ... Temperature controller 10 ... IH controller 11 ... Processing of the lens lens holder apparatus

Claims (8)

A base installed in a processing apparatus for eyeglass lenses;
A low melting point metal member fixed to the base and having a shape following the optical surface of the spectacle lens, and having a melting point lower than that of the base;
A processing method for a holder for a spectacle lens comprising:
A heating step of heating the foundation;
Transferring heat from the base to the low-melting point metal member, and fixing the low-melting point metal member in the vicinity of the base to partially melt the sticking release step to release both;
A method for processing a spectacle lens holder, comprising:   The method for processing a spectacle lens holder according to claim 1, wherein the heating step and the debonding step are performed in a dry manner in which the low melting point metal member is not brought into contact with a liquid.   The method for processing a spectacle lens holder according to claim 1 or 2, wherein in the heating step, the base is heated by an electromagnetic induction heating mechanism.   The spectacles according to any one of claims 1 to 3, wherein in the fixing release step, the base and the low-melting-point metal member are separated by a holding mechanism that holds at least one of the base and the low-melting-point metal member. Processing method of lens holder. A base installed in a processing apparatus for eyeglass lenses;
A low melting point metal member fixed to the base and having a shape following the optical surface of the spectacle lens, and having a melting point lower than that of the base;
A processing device for a spectacle lens holder comprising:
A heat source for generating heat for heating the base;
The heat source transmits heat to the low-melting-point metal member fixed to the base, and partially melts the low-melting-point metal member in the vicinity of the base to release the fixation between the two. Processing equipment.   The eyeglass lens holder processing apparatus according to claim 5, wherein the heat source is an electromagnetic induction heating mechanism.   The spectacle lens according to claim 5 or 6, further comprising a holding mechanism for holding at least one of the base and the low-melting-point metal member, wherein the base and the low-melting-point metal member are separated by the holding mechanism. Holding device processing device. The said low melting point metal which reused the said base and the said low melting-point metal member by which the fixation was cancelled | released by the processing method of the spectacle lens holder in any one of Claims 1-4, and was made to adhere to the said base again. A spectacle lens fixing step of fixing the spectacle lens to the member;
A spectacle lens processing step of processing the spectacle lens fixed to the low melting point metal member with the spectacle lens processing apparatus;
A method of manufacturing a spectacle lens.

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