JP2006272576A - Mold assembling apparatus, mold assembling method, and method and apparatus for manufacturing plastic lens - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mold assembling apparatus capable of rationalyzing the position of a tape with a mold without causing contamination or damage on the molding surface of the mold and capable of assembling the mold in a short time. <P>SOLUTION: The mold assembling apparatus is equipped with a first mold holding part 21 for holding a lower mold 11, a second mold holding part 22 for holding an upper mold 12, a computer 53 for storing the preliminarily measured dimensional data of both molds 11 and 12, bar codes 31 respectively provided to both molds 11 and 12 to specify both molds 11 and 12 corresponding to the dimensional data to respectively display mold number data, a reading means 54 for reading the mold number data displayed by the bar codes 31 to transmit them to the computer 53, a relative moving means 5 for relatively moving both molds 11 and 12 and a tape winding means 6 for winding the tape T around the peripheral surfaces of the both molds 11 and 12 relatively moved by the relatively moving means 5. The computer 53 collates the mold number data read by the reading means 54 with the stored dimensional data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a molding mold assembling apparatus and assembling method, and a plastic lens manufacturing apparatus and manufacturing method.

As a device for manufacturing plastic lenses such as eyeglasses, a cleaning device for cleaning a lower mold having a convex molding surface and an upper mold having a concave molding surface, and a pair of cleaned upper and lower molds are spaced apart by a predetermined distance. A molding mold assembling apparatus that is arranged to face each other and winds a tape around the peripheral surfaces of these molds, and a cavity formed between the molding mold tape, the lower mold, and the upper mold assembled by the molding mold assembling apparatus. A device including a resin injection device for injecting a resin raw material is known (Patent Document 1).
In this patent document 1, the cleaning device is for cleaning a mold by slab cleaning using a rotating elastic body. First, a linear gauge attached to the parallel chuck is subjected to centripetal positioning with a parallel positioning chuck. Measure the outer shape of the mold. Next, the mold is transported, the center part of the non-molding surface of the mold is sucked and held by the mold holding part, and the mold is rotated. Next, the rotating elastic body for slab cleaning is applied to the center of the molding surface. The elastic body moves toward the outer periphery of the mold while rotating, and leaves the mold when it reaches the outermost periphery. Thereafter, the mold is rotated at a low speed, alcohol is applied, and the mold is dried at a high speed.
As a conventional molding mold assembling apparatus, a first mold holding unit that holds a lower mold, a second mold holding unit that holds an upper mold, and these first mold holding unit and second mold holding unit There is one provided with a moving mechanism that moves each part and a linear gauge that measures the height of the center of the molding surface with respect to the reference height of the mold (Patent Document 2).

An outline of the conventional example shown in Patent Document 2 is shown in FIGS.
FIG. 12 is a schematic view showing the conventional movement of the lower mold.
In FIG. 12, the lower mold 101 is centered by a chuck (not shown), and is placed on the mold base 100 with the molding surface 101A up and the non-molding surface down. The first mold holding unit 111 to the home position X ₁ at the bottom of the mold receiving base 100 is located (see phantom). When the first mold holding unit 111 is raised by a computer-controlled moving means (not shown), the upper end of the first mold holding unit 111 reaches the non-molding surface (see the solid line), and the first mold holding unit 111 continues to rise. Then, the lower mold 101 is lifted. At this time, the lift detection sensor 130 attached to the mold cradle 100 is activated. The lift detection sensor 130 has a height difference between the upper surface of the first mold holding unit 111 and the upper surface of the mold cradle 100, that is, the peripheral edge of the lower mold 101 and the first mold holding unit 111 to the lower mold 101. The dimension a between the contact position is detected. This dimension a is separately input to the computer. The dimension from the upper surface of the first mold holding unit 111 to the upper surface of the mold cradle 100 at the origin position X1 is a fixed value A.

Continue lifting the lower mold 101, the first mold holding portion 111 reaches the mold measuring position _{Y 11,} the center of the molding surface 101A of the lower mold 101 is in contact with the measuring element of the linear gauge 131. At this time, the linear gauge 131 reads the data at the time of contact, and inputs the read measurement value of the linear gauge 131 to the computer. The size of the origin position X ₁ of the first mold holding unit 111 to the mold measuring position Y ₁₁ is a fixed value B. Here, the origin position of the linear gauge 131 is a top height of the first mold holding portion 111 of the mold for molding the measuring position Y _11. Therefore, in the linear gauge 131, the relative position dimension of the center of the molding surface with respect to the surface to be held in a state where the non-molding surface of the lower mold 101 is held, that is, the contact position of the first mold holding unit 111 to the lower mold 101 and the molding. A dimension c between the center position of the surface 101A is measured. This measured value is input to the computer.
Then, the first mold holding unit 111 after the horizontal movement to a predetermined position Y _12, moves to the tape winding position Z _1. The lower and the peripheral edge of the lower mold 101 of the tape winding position Z ₁ in the tape T is to match.
The first mold holding unit 111 is controlled by the computer so as to move by the height of the dimension (C + a). In addition, the dimension to the upper surface of the 1st shaping | molding die holding | maintenance part 111 and the lower end of the tape T in the origin position X1 is the fixed value C.

FIG. 13 is a schematic view showing the conventional movement of the upper mold.
In FIG. 13, the upper mold 102 is centered by a chuck (not shown), and is held by the second mold holding unit 112 in a state where the molding surface 102 </ b> A is down and the non-molding surface is up.
The second mold holding unit 112 is lowered by the moving means (not shown) to reach the mold measuring position Y ₂₁ from the origin position X _2, and the center of the molding surface 102 A of the upper mold 102 is the measuring element of the linear gauge 132. Contact with. The measurement value d of the linear gauge 132 read at this time is input to the computer. The size of the home position X ₂ to mold measuring position Y ₂₁ of the second mold holding unit 112 is a fixed value E. Here, the origin position of the linear gauge 132 is a bottom height of the second mold holding portion 112 of the mold for molding the measuring position Y _21. Therefore, in the linear gauge 132, the relative position dimension of the center of the molding surface with respect to the surface to be held in a state where the non-molding surface of the upper mold 102 is held, that is, the contact position of the second molding die holding portion 112 to the upper mold 102 and the molding. The dimension d between the center position of the surface 102A is measured, and this value is input to the computer.

Thereafter, second mold holding unit 112 after the horizontal movement to a predetermined position Y _22, lowered to the tape winding position Z _2. The relative dimensions of the origin position X ₂ of the origin position X ₁ and a second mold holding portion 112 of the first mold holding unit 111 is a fixed value D.
Here, e is the center thickness of the plastic lens, and is a value determined to ensure the mechanical strength of the lens. The relative dimensions of the upper and lower molds 101 and 102 in order to e, second mold holding unit 112 will be controlled by the computer to move to the height of the origin position _{X 1 (C + a + c} + e + d) .
As described above, in order to assemble the mold for molding, the first mold holding unit 111 holding the lower mold 101 and the second mold holding unit 112 holding the upper mold 102 are relatively moved by the moving mechanism, The amount of movement differs for each mold due to the shape of the plastic lens to be manufactured, the shapes of the upper and lower molds 101 and 102 themselves, manufacturing errors, and the like.

  In addition, there is a molding die in which lens identification information such as lens identification information and processing information is added to the molding surface of the molding die, and this is transferred to the lens to eliminate the need to write the unique information (Patent Document 3).

Japanese Patent Laid-Open No. 5-19212 JP 2003-53746 A JP 2002-113725 A

In the conventional examples shown in Patent Document 1 and Patent Document 2, the first mold holding unit 111 and the second mold holding unit 112 are moved in order to assemble the mold for molding, In the middle, the center of the molding surface 101A of the lower mold 101 is in contact with the probe of the linear gauge 131, and the center of the molding surface 102A of the upper mold 102 is in contact with the probe of the linear gauge 132.
However, when the measuring elements of the linear gauges 131 and 132 come into contact with the molding surfaces 101A and 102A of the upper and lower molds 101 and 102, there is a possibility that the molding elements 101A and 102A will be contaminated by contact with the molding surfaces 101A and 102A. When the moving speed of is high, the molding surfaces 101A and 102A are also damaged. In this state, when the raw material resin is injected to produce a plastic lens, dirt is transferred to the front and back surfaces of the lens, and scratches are generated.
When the molding surfaces 101A and 102A are soiled, it is necessary to clean the measuring elements of the linear gauges 131 and 132. However, the soiling of the molding surfaces 101A and 102A is found in the molds 101 and 102 and the tape cavity. Since the filled resin material is solidified and the mold is removed, the plastic lens on which the dirt is transferred is continuously manufactured for a long time (15 to 24 hours).

In addition, a lift detection sensor 130 is attached to the mold cradle 100 on which the lower mold 101 is arranged. The lift detection sensor 130 allows the peripheral edge of the lower mold 101 and the first mold holding part 111 to the lower mold 101 to be mounted. The dimension a between the contact position and the contact position is detected.
However, although it is conceivable that the lift detection sensor 130 minimizes the optical axis diameter in order to improve the measurement accuracy, there is a limit to this minimization, and it is not possible to have sufficient measurement accuracy. Therefore, it is not always easy to match the lower end edges of the lower mold 101 and the tape T. If the lower end edge of the tape T is shifted above the lower end of the peripheral edge of the lower mold 101, the resin raw material is polymerized. There is also a problem that the resin leaks out of the cavity due to thermal expansion. In order to solve this problem, it may be possible to align the lower end edge of the tape T in advance so that it is lower than the lower end of the peripheral edge of the lower mold 101. Therefore, if the tape T protrudes from the lower end of the lower mold 101, the reference position is not determined and the injection nozzle interferes with the mold during the injection. Arise.

  In Patent Document 3, the product management of the lens is efficiently performed using a barcode, but since the technique is not related to the position of the mold and the tape, the above-described problem cannot be solved. In addition, although the barcode is engraved at a portion to be removed by the time of completion of the lens, the portion is the molding surface itself of the molding die, so that the trace may remain on the finished lens.

  An object of the present invention is to provide a molding mold assembling apparatus and an assembling method capable of ensuring that the molding surface of the molding die is free from dirt and scratches and that the position of the tape and the molding die can be properly adjusted and assembled in a short time. Another object of the present invention is to provide a plastic lens manufacturing apparatus and manufacturing method.

  The molding mold assembling apparatus according to the present invention includes a first molding die holding portion that holds a non-molding surface portion opposite to the convex molding surface of the first molding die on which a convex molding surface is formed, and a concave molding surface. The second molding die holding part that holds the non-molding surface portion opposite to the concave molding surface of the second molding die formed with the dimension measured in advance for each of the first molding die and the second molding die. A computer for storing information, and model number information for specifying the first mold and the second mold corresponding to the dimension information, respectively, and non-molding surface portions of the first mold and the second mold; A display portion provided on at least one of the peripheral surface portions; reading means for reading the model number information displayed on the display portion and transmitting the read model number information to the computer; the first mold and the second mold And relative A relative movement means for moving, and a tape winding means for winding a tape around the peripheral surfaces of the first mold and the second mold that are relatively moved by the relative movement means, and the computer The model number information read by the reading means and the stored dimension information are collated, and a command to move the first molding die and the second molding die relative to each other based on the dimension information that matches the model number information. It sends to a relative movement means, It is characterized by the above-mentioned.

According to this invention, the shape dimensions of the first mold and the second mold are measured at the time of manufacturing the mold for molding, and the measured dimension information is stored in the computer.
Further, a display unit for displaying the model number information of the first mold corresponding to the dimension information stored by the computer is provided on at least one of the non-molded surface part and the peripheral surface part of the first mold, and similarly stored by the computer. A display unit for displaying the model number information of the second mold corresponding to the dimension information is provided on at least one of the non-molded surface part and the peripheral surface part of the second mold.
The model number information is read by the reading means, and this model number information is sent to the computer.
The computer controls the relative movement means so that the model number information and the dimension information stored in advance correspond to each other and the first mold and the second mold are moved relative to each other. The relative movement means receives a command from the computer, moves the first mold holding part to hold the non-molding surface of the first mold, and moves the second mold holding part by the relative movement means to move the second mold holding part. The first mold holding part and the second mold holding part hold the non-molding surface of the mold and further operate the relative movement means so that the first mold and the second mold have an appropriate distance. And move relative to each other.
Thereafter, the tape is wound around the peripheral surfaces of the first mold and the second mold by the tape winding means, and the assembly of the molding mold is completed.
In addition, if the molding surface of the first mold or the second mold is damaged, the mold itself is polished and reused. In this case, the dimensions of the mold whose shape has been changed by polishing are measured again. Then, the data stored in the computer is rewritten.

Therefore, in the present invention, the first mold held by the first mold holding unit and the second mold holding unit held by the first mold holding unit and the second mold holding unit based on the dimensions of the first mold and the second mold obtained in advance. In order to determine the relative distance to the second mold, when assembling the mold for molding, a member such as a linear gauge probe is not applied to each molding surface of the first mold and the second mold. , The molded surface will not get dirty or scratched. In particular, since the display part is provided on the non-molding surface part or the peripheral surface, the position where the display part is provided does not interfere with the molding surface. For this reason, since the trace of the display portion provided on the molding die does not remain on the molding surface, the molding surface is not soiled or scratched.
Furthermore, since the relative positions of the outer peripheral portions of the first mold and the second mold and the tape are appropriate, the tape is surely wound around the peripheral surfaces of the first mold and the second mold, and the lower surface of the tape The peripheral edge of the lower mold can be matched with high accuracy.

The display unit is preferably a barcode. In this case, the reading means is a bar code reader.
In the present invention, since the bar code is accurately read by the bar code reader, there is no reading error, and an accurate mold can be assembled. In addition, since the system using the bar code is supplied to the market at a low price, the manufacturing cost of the assembling apparatus itself can be reduced.

The bar code is preferably a two-dimensional bar code.
In the present invention, since the two-dimensional barcode can store a large volume, it is possible to display model number information of many molds having different shapes in a small space.

The dimension information includes a dimension between a peripheral edge of the first molding die and a contact position of the first molding die holding portion to the first molding die, and the first molding die to the first molding die. The dimension between the contact position of the holding part and the center position of the convex molding surface, and the distance between the contact position of the second mold holding part to the second mold and the center position of the concave molding surface. A configuration including dimensions is preferred.
In this invention, the dimension a between the peripheral edge of the first mold and the contact position of the first mold holding portion to the first mold is measured in advance by a suitable measuring device when the mold is manufactured, and this dimension information is obtained. Since the relative movement means is actuated based on the above, it is possible to eliminate the need for the lift detection sensor conventionally used during assembly work.
Moreover, the dimension c between the contact position of the first mold holding part to the first mold and the center position of the convex molding surface at the time of forming the mold, and the second mold holding part to the second mold The dimension d between the contact position and the center position of the concave molding surface is measured in advance with an appropriate measuring device, and the relative movement means is operated based on this measured value. A linear gauge can be eliminated.

The tape winding means is disposed to face the peripheral surfaces of the first mold and the second mold with the tape feeder for supplying the tape and the tape supplied from the tape feeder being interposed therebetween. And a roller for winding the tape around a peripheral surface of the second mold, and the tape feeder matches the diameter of the first mold and the second mold and the first mold and the second mold. The structure which adjusts the supply position of the said tape with respect to the center of 2 molds is preferable.
In this invention, the tape supplied from the tape feeder is fed to the peripheral surfaces of the first mold and the second mold that are arranged opposite to each other, and is pressed by the rollers to be the peripheral surfaces of the first mold and the second mold. Wrapped around.
Here, the tape feeder is configured to adjust the supply position of the tape with respect to the centers of the first mold and the second mold in accordance with the diameter dimensions of the first mold and the second mold. Since the tape is to be supplied to a predetermined position on the peripheral surfaces of the first mold and the second mold regardless of the diameter dimensions of the first mold and the second mold, the tape winding operation is surely performed. Can do.

The dimension information preferably includes a diameter dimension of each of the first mold and the second mold.
In the present invention, the diameter dimensions of the first mold and the second mold can be measured in advance, and the position of the tape feeder can be adjusted based on the measured dimensions. Therefore, the tape winding operation can be automatically performed.

The plastic lens manufacturing apparatus of the present invention includes a molding mold assembling apparatus having the above-described configuration, the tape of the molding mold assembled by the molding mold assembling apparatus, the first molding die, and the second molding die. And a resin injecting device for injecting a resin raw material into the cavity.
In the present invention, the resin raw material is injected from the resin injection device into the cavity of the molding mold assembled by the molding mold assembling apparatus, and then heat treatment is performed. After the resin is cured, the tape is peeled off, the first mold and the second mold are removed, and the plastic lens is taken out.
Accordingly, in the present invention, since the molding surfaces of the first mold and the second mold are not stained or scratched, the dirt or scratches are transferred to the front and back surfaces of the plastic lens manufactured using these molds. Absent. Therefore, the plastic lens manufacturing apparatus of the present invention can manufacture high-quality plastic lenses.

The method for assembling a molding mold according to the present invention is a dimension in which dimensional information measured in advance for each of a first molding die having a convex molding surface and a second molding die having a concave molding surface is stored by a computer. An information storage step and display for displaying model number information for identifying the first mold and the second mold corresponding to the dimension information stored in the computer on the first mold and the second mold, respectively. A model number information display step in which a portion is provided on at least one of the non-molding surface portion and the peripheral surface portion of the first molding die and the second molding die, and an information reading step of reading the model number information displayed in the model number information display step with a reading unit A relative movement step of causing the first mold and the second mold to move relative to each other by associating the model number information read in the information reading step with the dimension information stored in the computer, Mold and method of assembling the molding mold, characterized in that a step tape wrap to perform winding of the tape to the peripheral surface of the second mold.
In the present invention, it is possible to provide a method for assembling a molding mold capable of producing the aforementioned effects.

The plastic lens manufacturing method according to the present invention comprises the tape of the molding mold, the first molding die, and the second molding die after assembling the molding mold by the molding mold assembling method. A resin raw material is injected into the cavity.
In the present invention, it is possible to provide a method for producing a plastic lens capable of producing the above-described effects.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the structure of the 1st shaping | molding die used in 1st Embodiment of this invention and a 2nd shaping | molding die is demonstrated based on FIGS. 1-3.
[Structure of first mold and second mold]
FIG. 1 is a cross-sectional view showing a state in which a lower mold 11 that is a first mold is held by a first mold holding portion 21, and FIG. 2 is a diagram that shows that an upper mold 12 that is a second mold is held by a second mold. FIG. 6 is a cross-sectional view showing a state held by a part 22. FIG. 3 shows a specific configuration of the upper mold 12, (A) is a plan view, (B) is a front view, and (C) is a schematic front view of the display unit.

In FIG. 1, the lower mold 11 is formed in a substantially disc shape from glass or other appropriate material, and a convex molding surface 11A is formed on the upper surface thereof, on the opposite side to the convex molding surface 11A. A concave non-molding surface portion 11B is formed.
The non-molding surface portion 11B is held by the first mold holding portion 21. The first mold holding part 21 includes a bottomed cylindrical main body 23 and a suction part 24 provided inside the main body 23. The suction part 24 is connected to a vacuum source (not shown). When the vacuum source is activated, the central portion of the non-molding surface portion 11B of the lower mold 11 is sucked.
Here, the diameter dimension of the lower mold 11 is f, and the dimension between the lower end of the peripheral edge of the lower mold 11 and the contact position of the first mold holding part 21 to the lower mold 11 is a. The dimension between the contact position of the first mold holding part 21 and the center position of the convex molding surface 11A is c. The dimensions a, c, and f are measured in a state of being held in advance by the mold holding unit 21 when the mold is manufactured.
A bar code 31 as a display unit is provided on the outer peripheral side of the non-molded surface portion 11B of the lower mold 11. The bar code 31 is formed by laser engraving, edging, baking with heat-resistant and melt-resistant ink, resin, or other appropriate means.
In the present embodiment, the barcode 31 is a two-dimensional barcode (see FIG. 3C).

2 and 3, the upper mold 12 is formed in a substantially disk shape from glass or other appropriate material, and a concave molding surface 12A is formed on the lower surface thereof, which is opposite to the concave molding surface 12A. A convex non-molding surface portion 12B is formed on the upper surface.
The non-molding surface portion 12B is held by the first mold holding portion 22. The first mold holding unit 22 includes a bottomed cylindrical main body 23 and an adsorption portion 24 provided inside the main body 23.
Here, the diameter dimension of the upper mold 12 is f, and the dimension between the contact position of the second mold holding portion 22 to the upper mold 12 and the center position of the concave molding surface 12A is d.
On the outer peripheral side of the non-molded surface portion 12B of the upper mold 12, barcodes 31 as display portions are provided at positions facing each other across the center. This barcode 31 is a two-dimensional barcode (see FIG. 3C).
In order to manufacture plastic lenses having various shapes and performances, a plurality of types having different model numbers are prepared for the lower mold 11 and the upper mold 12 described above, and dimensional information a, c, d, and f is different for each model number. . The bar code 31 displays model number information.

[Structure of plastic lens manufacturing equipment]
The plastic lens manufacturing apparatus according to the present embodiment includes a cleaning device that cleans the lower mold 11 and the upper mold 12, an assembly device that assembles a molding mold from the lower mold 11 and the upper mold 12 cleaned by the cleaning device, and an assembly. The molding mold cavity is provided with a resin injection device. The plastic lens manufactured in this embodiment is used for glasses, a telescope, a camera lens, and the like.
A barcode reading means is attached to the mold supply section of the cleaning device, and reads the model number information from the barcode of the mold. The read model number information is collated with model number information stored in advance in the computer 53 to obtain corresponding shape information, and only necessary information is used in the cleaning apparatus and the assembling apparatus.

The schematic configuration of the cleaning apparatus is shown in FIGS.
FIG. 4 is a schematic configuration diagram showing a main part of the cleaning device 4 for cleaning the lower mold 11.
The schematic configuration of the cleaning apparatus is shown in FIGS.
FIG. 4 is a schematic configuration diagram showing a main part of the cleaning device 4 for cleaning the lower mold 11.
In FIG. 4, the cleaning device 4 includes a base (not shown), a first holder 41 attached to the base and holding the lower mold 11, a rotation driving unit (not shown) that rotationally drives the first holder 41, and the lower mold 11. And a sponge roll 43 for cleaning. The sponge roll 43 includes a cylindrical cleaning part 44 formed in a roll shape from a urethane foam impregnated with a cleaning liquid or a polishing liquid, and a shaft part 45 attached to the shaft center of the cleaning part 44. When the molding surface 11A of the mold 11 and the peripheral surface of the lower mold 11 are cleaned, the posture is changed. The cleaning device 4 controls the amount of movement of the sponge roll from the mold center to the outer periphery in the cleaning of the molding surface and the pressing amount of the sponge roll in the peripheral surface cleaning based on the diameter information obtained from the computer. The cleaned lower mold 11 is coated with alcohol at the time of low-speed rotation, and the alcohol is evaporated at a subsequent high-speed rotation, so that the cleaning surface is finished cleanly. In addition, it is not limited to the thing of the structure which impregnates the washing | cleaning liquid in the sponge roll 43, The thing of the structure which apply | coats a washing | cleaning liquid or polishing liquid to the lower mold 11, and wash | cleans this with a roll may be used.

FIG. 5 is a schematic configuration diagram showing a main part of the cleaning device 4 for cleaning the upper mold 12.
The cleaning device 4 has substantially the same structure as the cleaning device 4 that cleans the lower mold 11, a base (not shown), a second holder 42 that is attached to the base and holds the upper mold 12, and rotates the second holder 42. A rotation driving unit (not shown) for driving and a sponge roll 43 for cleaning the lower mold 11 are provided.
When the molding surface 12A of the upper mold 12 and the peripheral surface of the upper mold 12 are cleaned, the posture is changed. The movement amount and the pressing amount of the sponge roll are controlled based on the diameter dimension information obtained from the computer in the same manner as the lower mold.

6 to 9 show a schematic configuration of the assembling apparatus constituting this embodiment.
6 and 7 show relative movement means 5 for moving the lower mold 11 and the upper mold 12 relative to each other.
FIG. 6 is a schematic configuration diagram of the relative movement means 5.
In FIG. 6, the relative moving means 5 includes a first drive mechanism 51 for moving the first mold holding part 21 in the vertical direction and the horizontal direction, and a first drive mechanism 51 for moving the second mold holding part 22 in the vertical direction and the horizontal direction. The second drive mechanism 52 and a computer 53 that controls the drive of the first drive mechanism 51 and the second drive mechanism 52 are provided.
The first drive mechanism 51 is connected to the first mold holding unit 21 and moves the first molding holding unit 21 up and down, and the elevating mechanism 511 along the linear guide 510 in the horizontal direction. and a horizontal mechanism 512 to move to, when the first mold holding unit 21 is at the home position X ₁ are to be located below the mold pedestal 100. The mold cradle 100 is formed with a relief in the direction of the tape winding means 6 to prevent interference with the first mold holding part 21 and the first drive mechanism 51.
The second drive mechanism 52 is connected to the second mold holding unit 22 and moves the second mold holding unit 22 up and down, and the elevating mechanism 511 moves in the horizontal direction along the linear guide 510. and a horizontal mechanism 512 for, when the second mold holding unit 22 is at the home position X ₂ is located above the mold pedestal 100. The upper mold 12 is waiting on the mold cradle 100.

The computer 53 includes an input device 53A such as a keyboard. In the input device 53A, dimensional information a, c, d, and f corresponding to the model numbers of the lower mold 11 and the upper mold 12 are input. Note that dimensional information corresponding to each model number is registered in advance when the mold is manufactured.
The computer 53 is connected to reading means 54 that reads the barcode 31. The reading unit 54 reads the model number information displayed by the barcode 31 and sends the model number information to the computer 53. The reading means 54 is a barcode reader that can read a barcode.
An external input means 55 is connected to the computer 53, and the external input means 55 is for inputting the distance e between the central portions of the lower mold 11 and the upper mold 12. In the present embodiment, the external input means 55 is used. However, the model number information is information for specifying the shape and type of the mold, and the distance between the center portions obtained from the combination of the molds is stored in the computer 53 as a database. The value may be used.
The computer 53 controls the driving of the first drive mechanism 51 and the second drive mechanism 52 according to a preset program. The computer 53 receives the model number information transmitted from the reading means 54 and the input device 53A and stores it in advance. The relative movement means 5 is instructed to relatively move the lower mold 11 and the upper mold 12 on the basis of the dimension information a, c, d, f that matches the dimension information a, c, d, f. To send.
The reading means 54 is disposed in the mold supply part of the cleaning device.

The relative moving means 5 having the above configuration drives the first drive mechanism 51 and the second drive mechanism 52 in response to a command from the computer 53.
As shown in FIG. 7, the first drive mechanism 51, the first mold holding unit 21 at the origin position X ₁ is increased, the non-molding surface of the lower mold 11 to which the upper end is centripetal on the mold pedestal 100 reached 11B, further, reaches a position Y ₁₁ with the first mold holding unit 21 is adsorbed to the bottom mold 11 continues to rise. The centripetal chuck (not shown) has a structure that opens upon receiving a signal that the non-molding surface 11B of the lower mold 11 is adsorbed. Then, after reaching to the first mold holding unit 21 Y ₁₂ moves horizontally with adsorbed lower mold 11, rising, moved to the tape winding position Z _1. The 1st shaping | molding die holding | maintenance part 21 moves only the height of a dimension (C + a).
As shown in FIG. 6, the second drive mechanism 51, second mold holding portion 22 reaches to the position _{Y 23} descends from the home position _{X 2} (suction position _{Y 23} and conventional measurement position _{Y 21} are the same not high, since the suction position Y ₂₃ is not a fixed value), adsorbs on the mold 12 which is centripetal in this position. The centripetal chuck (not shown) has a structure for receiving and receiving a signal by which the non-molding surface 12B of the upper mold 12 is adsorbed. Thereafter, second mold holding portion 22 is raised above the mold 12 to a position Y ₂₁ away from the mold pedestal 100, after then moved horizontally to a predetermined position Y _24, lowered to the tape winding position Z _2. Here, if the center thickness of the plastic lens produced the e, so that the second mold holding unit 22 to move the height of the origin position _{X 1 (C + a + c} + e + d).

8 and 9 show a tape winding means 6 that winds the tape around the peripheral surfaces of the lower mold 11 and the upper mold 12 that are relatively moved by the relative moving means 5.
FIG. 8 is a plan view of the tape winding means 6, and FIG. 9 is a front view of the tape winding means 6.
In these drawings, the tape winding means 6 is disposed to face the peripheral surfaces of the lower mold 11 and the upper mold 12 with the tape feeder 60 for supplying the tape T and the tape T supplied from the tape feeder 60 interposed therebetween. A first roller 61 and a second roller 62, a roller adjusting mechanism 63 for adjusting the relative position of the first roller 61 and the second roller 62 in correspondence with the diameters of the lower mold 11 and the upper mold 12, and the lower mold 11 The feeder adjustment mechanism 64 that adjusts the position of the tape feeder 60 according to the diameter of the upper mold 12, the cutter 65, the first mold holding part 21 and the second mold holding part 22 are arranged in one direction (in FIG. 8). And a rotation drive mechanism (not shown) that rotates in a counterclockwise direction.

The tape feeder 60 supplies the tape T between the lower mold 11 and the upper mold 12 and the first roller 61. The tape T is provided with an adhesive on the surfaces of the lower mold 11 and the upper mold 12, and the tape T pressed against the peripheral surfaces of the lower mold 11 and the upper mold 12 by the first roller 61 is used as it is. 11 and the upper mold 12 are attached to the peripheral surface and sent.
The first roller 61 includes a roller body 611 made of hard rubber and a frame 612 that rotatably supports the roller body 611.
The second roller 62 is disposed opposite to the first roller 61 with the lower mold 11 and the upper mold 12 interposed therebetween, and supports a pair of roller main bodies 621 made of hard rubber and the roller main bodies 621 so as to be rotatable. Frame 622. The roller main body 621 presses the tape T against the peripheral surfaces of the lower mold 11 and the upper mold 12.
A roller adjustment mechanism 63 is connected to the ends of the frames 612 and 622.
The roller adjusting mechanism 63 is configured to move the first roller 61 and the second roller 62 close to and away from the centers of the lower mold 11 and the upper mold 12.

The feeder adjustment mechanism 64 moves the tape feeder 60 in a direction orthogonal to the supply direction of the tape T, and includes a gear mechanism and a motor (not shown). This motor is connected to the computer 53, and the supply position to the peripheral surfaces of the lower mold 11 and the upper mold 12 of the tape T based on the data of the diameter dimension f of the lower mold 11 and the upper mold 12 supplied from the computer 53. Adjust.
The cutter 65 is disposed between the lower mold 11 and the upper mold 12 and the tape feeder 60 and includes a cutting blade 651 that moves forward and backward with respect to the tape T.
Here, in the present embodiment, the first mold holding unit 21, the second mold holding unit 22, the bar code 31, the computer 53, the reading unit 54, the external input unit 55, the relative moving unit 5, and the tape winding unit. 6, a molding mold assembling apparatus 1 is configured.

FIG. 10 is a schematic configuration diagram of the resin injection device 7.
In FIG. 10, the resin injection device 7 includes a molding mold installation unit 71, a supply unit 72, a raw material storage unit 73, and a raw material supply device 74.
A plurality of mold restraining portions 711 are disposed in the molding mold setting portion 71, and the molding restraint 711 is formed by winding the tape T around the lower mold 11 and the upper mold 12. The mold 13 is held.
An injection port (not shown) for injecting a resin material is formed in a part of the tape T of the molding mold 13. The injection port may be formed after the molding mold 13 is held by the mold holding unit 711 and mounted on the molding mold installation unit 71, or may be molded before the molding mold installation unit 71 is installed. It doesn't matter.

The supply unit 72 injects the resin material into the cavity of the molding mold 13 installed in the molding mold installation unit 71 and sucks and removes the resin material overflowing from the injection port of the molding mold 13.
The supply unit 72 includes a supply unit main body 721, a nozzle unit 722 connected to the supply unit main body 721, a drainage unit 723 connected to the supply unit main body 721, and a suction sensor 724 connected to the supply unit main body 721. The raw material supply part 725 connected to the supply part main body 721 is provided.
The raw material storage unit 73 stores the resin raw material overflowing from the injection port of the molding mold 13.
The raw material supply device 74 supplies the resin raw material to the supply unit 72.

[Plastic lens manufacturing method]
Next, a method for manufacturing a plastic lens will be described.
(Mold mold storage process)
When the mold is manufactured, the lower mold 11 is attached to the first mold holding part having the same structure as that of the assembling apparatus, and the lower end of the lower edge of the lower mold 11 and the contact position of the first mold holding part 21 to the lower mold 11 , The dimension c between the contact position of the first mold holding part 21 to the lower mold 11 and the center position of the convex molding surface 11A, and the diameter dimension f are measured, and the data is obtained. Corresponding to the model number information, it is registered in the computer using the input device 53A. Similarly, the upper mold 12 is attached to the second mold holding part having the same structure as the assembly apparatus, and the contact position of the second mold holding part 22 with the upper mold 12 and the center position of the concave molding surface 12A are determined. The dimension d and the diameter dimension f are measured, and the data is associated with the model number information and registered in the computer using the input device 53A.

(Model number information display process)
A barcode 31 that displays model number information for specifying the lower mold 11 corresponding to the dimension information a, c, d, and f stored in the computer 53 is formed on the non-molded surface portion 11 </ b> B of the lower mold 11. Similarly, a barcode 31 that displays model number information for specifying the upper mold 12 corresponding to the dimension information a, c, d, and f stored in the computer 53 is formed on the non-molded surface portion 12 </ b> B of the upper mold 12.
(Washing process)
[Information reading process]
The barcode displayed on the lower mold 11 and the upper mold 12 is read by the reading means 54 attached to the mold supply unit, and the model number information is sent to the computer 53. In the computer, the shape information of the mold corresponding to the model number information is searched, and the subsequent processing is performed based on the verified shape information.

[Washing process]
The lower mold 11 and the upper mold 12 are cleaned by the cleaning device 4. At this time, the sponge roll 43 is brought into contact with the molding surfaces 11A and 12A and the peripheral surfaces of the lower mold 11 and the upper mold 12, and the sponge roll 43, the lower mold 11 and the upper mold 12 are rotated. Here, the model number information read in the information reading process is associated with the dimension information stored in the computer 53, and the movement amount and the pressing amount of the sponge roll are controlled. When the cleaning is completed, the lower mold 11 and the upper mold 12 are dried and sent to the assembling apparatus.

(Assembly process)
Next, in order to assemble the mold 13 for molding, the lower mold 11 and the upper mold 12 are arranged at predetermined positions.
[Holding process]
The relative moving means 5 is operated to hold the lower mold 11 with the first mold holding part 21 and the upper mold 12 with the second mold holding part 22. Here, the lower mold 11 and the upper mold 12 are relatively moved by associating the model number information read in the information reading process with the dimension information stored in the computer 53.
[Tape winding process]
Thereafter, the tape winding means 6 is operated to wind the tape T around the peripheral surfaces of the lower mold 11 and the upper mold 12. Thereby, the molding mold 13 is assembled.

(Raw resin injection process)
After assembling the molding mold 13, the resin material is injected into the cavity between the tape T, the lower mold 11 and the upper mold 12 of the molding mold 13 by the resin injection device 7. Thereafter, the resin raw material is heat-treated. After the resin is cured, the tape T is peeled off, the lower mold 11 and the upper mold 12 are removed, and the plastic lens is taken out.
(Reuse)
When the lower mold 11 or the upper mold 12 is damaged, the lower mold 11 or the upper mold 12 is polished and reused. In this case, since the shape is changed by polishing, the lower mold 11 is subjected to the above-described steps. Then, the dimensions of the upper mold 12 are measured again, and the data stored in the computer 53 is rewritten.

Therefore, in the first embodiment, the following effects can be achieved.
(1) Holds the first molding die holding portion 21 that holds the non-molding surface portion 11B of the lower mold 11 on which the convex molding surface 11A is formed, and the non-molding surface portion 12B of the upper mold 12 on which the concave molding surface 12A is formed. The second mold holding unit 22, the computer 53 that stores pre-measured dimension information of the lower mold 11 and the upper mold 12, respectively, and the model number information that identifies the lower mold 11 and the upper mold 12 corresponding to the dimension information. And the bar code 31 provided on each of the non-molding surface portions 11B and 12B of the lower mold 11 and the upper mold 12 and the model number information displayed on the bar code 31 are read and the read model number information is transmitted to the computer 53. Reading means 54 for performing relative movement, relative moving means 5 for relatively moving the lower mold 11 and the upper mold 12, and this The lower mold 11 relatively moved by the relative movement means 5 and the tape winding means 6 for winding the tape T around the peripheral surface of the upper mold 12 to constitute a molding mold assembling apparatus, and a computer 53, The model number information read by the reading means 54 is collated with the stored dimension information, and a command for relatively moving the lower mold 11 and the upper mold 12 based on the dimension information that matches the model number information is sent to the relative moving means 5. The configuration. Therefore, since the relative distance between the lower mold 11 and the upper mold 12 is determined based on the dimensions of the lower mold 11 and the upper mold 12 measured in advance, each of the lower mold 11 and the upper mold 12 is assembled when the molding mold 13 is assembled. A member such as a linear gauge probe is not applied to the molding surfaces 11A and 12A, and the molding surfaces 11A and 12A are not soiled or scratched. Moreover, since the relative positions of the outer peripheral portions of the lower mold 11 and the upper mold 12 and the tape T are appropriate, the tape T can be reliably wound around the peripheral surfaces of the lower mold 11 and the upper mold 12.

(2) Since the bar code 31 is used to display the model number information for specifying the lower mold 11 and the upper mold 12, the bar code 31 is read by the bar code reader. There is no error, and the molding mold can be accurately assembled.

(3) Since the bar code 31 is a two-dimensional bar code, the two-dimensional bar code can store a large amount of data, so that the model number information of many lower molds 11 and upper molds 12 having different shapes is displayed in a small space. it can.

(4) The tape winding means 6 is disposed so as to face the peripheral surfaces of the lower mold 11 and the upper mold 12 with the tape feeder 60 that supplies the tape T and the tape T supplied from the tape feeder 60 interposed therebetween. The first roller 61 and the second roller 62 for winding the tape T around the peripheral surfaces of the mold 11 and the upper mold 12, and the tape feeder 60 are matched to the diameter dimension f of the lower mold 11 and the upper mold 12, so that the lower mold 11 and the upper mold 12 And a feeder adjusting mechanism 64 that adjusts the supply position of the tape T with respect to the center of the tape T, so that the tape feeder 60 can move the circumference of the lower mold 11 and the upper mold 12 regardless of the diameter dimension f of the lower mold 11 and the upper mold 12. Since the tape is supplied to a predetermined position on the surface, the winding operation of the tape T can be reliably performed.

(5) Since the first roller 61 and the second roller 62 are arranged to face each other with the lower mold 11 and the upper mold 12 sandwiched therebetween, the pressing points to the lower mold 11 and the upper mold 12 of the tape T are substantially equidistant. Therefore, the pressing to the lower mold 11 and the upper mold 12 of the tape T can be reliably performed.

(6) As the dimension information, the dimension a between the peripheral edge of the lower mold 11 and the contact position of the first mold holding unit 21 to the lower mold 11 is used. Conventionally, a lift detection sensor is required to measure the dimension a. In this embodiment, this value can be measured by a high-precision measuring device other than the lift detection sensor. In assembling 13, the lower mold 11 and the lower surface of the tape T can be aligned with high accuracy. For this reason, it is possible to prevent interference between the injection nozzle and the mold due to leakage of the resin raw material during heat treatment due to insufficient adhesion area between the tape T and the lower mold 11 and the protrusion of the tape T.

(7) As dimension information, the dimension c between the contact position of the first mold holding part 21 to the lower mold 11 and the center position of the molding surface 11A, and the second mold holding part 22 to the upper mold 12 Since the dimension d between the contact position and the center position of the molding surface 12A is used, these dimensions are measured in advance by an appropriate measuring device before assembly work, and the relative moving means 5 is determined based on the measured value. It becomes possible to operate, and it is possible to eliminate the need for a linear gauge conventionally used during assembly work. In addition, since measurement with a linear gauge is not required, high-speed assembly is possible and productivity is improved.

(8) Since the diameter dimension f of each of the lower mold 11 and the upper mold 12 is used as the dimension information, the tape supply position of the tape feeder 60 can be adjusted based on the measurement dimension f, and the tape winding operation can be performed. Automation and stable tape winding are possible.

(9) The plastic lens manufacturing apparatus is provided with a resin injection device 7 for injecting a resin material into a cavity formed between the tape T of the molding mold 13, the lower mold 11 and the upper mold 12. As described above, in the present embodiment, the molding surfaces 11A and 12A of the lower mold 11 and the upper mold 12 are not soiled or scratched. Therefore, the front and back surfaces of the plastic lens manufactured using these molding molds 13 are soiled. And scratches are not transferred. Therefore, the manufactured plastic lens can be made high quality.

Next, a second embodiment of the present invention will be described with reference to FIG. The second embodiment is different from the first embodiment in the type of barcode, and the other configuration is the same as that of the first embodiment. In the description of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
FIG. 11 shows the structure of a barcode according to the second embodiment, and corresponds to FIG.
In FIG. 11, the barcode is a one-dimensional (linear) barcode 32, and the barcode 32 is formed on the outer peripheral side of the non-molded surface portion 12 </ b> B of the upper mold 12.
Although not shown, the lower mold 11 has the same configuration as that of the upper mold 12, and a bar code 32 is provided along the curved surface of the concave non-molding surface portion 11B.

Therefore, in 2nd Embodiment, in addition to having the same effect as (1) (2) (4)-(9) of 1st Embodiment, there can exist the following effect.
(10) Since the bar code 32 is a bar code displayed in a straight line, the cost including the reading means 54 including a bar code reader can be reduced compared to the case of a two-dimensional bar code.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the positions where the barcodes 31 and 32 are provided are the non-molding surface 11B of the lower mold 11 and the non-molding surface 12B of the upper mold 12. However, in the present invention, the display positions of the barcodes 31 and 32 are the same. As indicated by imaginary lines in FIGS. 3B and 11B, the peripheral surface of the lower mold 11 and the peripheral surface of the upper mold 12 may be used. In this case, the bar codes 31 and 32 are formed on the lower mold 11 and the upper mold 12 by laser marking, edging or the like.
Further, although the bar code 31, 32 is used as the display unit, a mail application reading system may be used in the present invention. That is, the model number itself may be displayed as a number on each of the lower mold 11 and the upper mold 12, and the number may be read by a number reading unit.

  Further, in the above-described embodiment, the tape winding means 6 is arranged such that the first roller 61 and the second roller 62 are arranged to face the peripheral surfaces of the lower mold 11 and the upper mold 12 with the tape T supplied from the tape feeder 60 interposed therebetween. However, in the present invention, only one roller may be provided.

Furthermore, the tape feeder 60 is provided with a feeder adjustment mechanism 64 that adjusts the supply position of the tape T with respect to the centers of the lower mold 11 and the upper mold 12 in accordance with the diameter dimension f of the lower mold 11 and the upper mold 12. The feeder adjustment mechanism 64 may be omitted.
Further, the lower mold 11 is illustrated as the first mold, the upper mold 12 is illustrated as the second mold, and the lower mold 11 and the upper mold 12 are arranged one above the other. The mold and the second mold may be arranged in the horizontal direction.

  The present invention can be used for an apparatus for manufacturing plastic lenses such as glasses, a telescope, and a camera lens.

Sectional drawing which shows the state by which the lower mold concerning 1st Embodiment of this invention was hold | maintained with the 1st shaping | molding die holding | maintenance part. Sectional drawing which shows the state by which the upper mold was hold | maintained with the 2nd shaping | molding die holding | maintenance part. The concrete structure of an upper mold is shown, (A) is a top view, (B) is a front view, (C) is a schematic front view of a display part. The schematic block diagram which shows the principal part of the washing | cleaning apparatus which wash | cleans a lower mold. The schematic block diagram which shows the principal part of the washing | cleaning apparatus which wash | cleans an upper mold. The schematic block diagram of a relative movement means. Schematic which shows a motion of a lower mold. The top view of a tape winding means. The front view of a tape winding means. The schematic block diagram of the resin injection apparatus. The figure which shows 2nd Embodiment of this invention and is corresponded in FIG. Schematic which shows the motion of the conventional lower mold. Schematic which shows the motion of the conventional upper mold.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mold assembly apparatus for shaping | molding, 4 ... Cleaning apparatus, 5 ... Relative moving means, 6 ... Tape winding means, 7 ... Resin injection apparatus, 11 ... Lower mold (1st shaping | molding die), 11A ... Convex-shaped molding surface, 11B: Non-molding surface part, 12 ... Upper mold (second molding die), 12A ... Concave molding surface, 12B ... Non-molding surface part, 13 ... Mold for molding, 21 ... First molding die holding part, 22 ... Second molding die Holding part, 31 ... Bar code (display part), 32 ... Bar code (display part), 53 ... Computer, 54A ... Input device, 54 ... Reading means, 55 ... External input means, 60 ... Tape feeder, 64 ... Feeder adjustment mechanism

Claims (9)

The first mold holding part that holds the non-molded surface portion opposite to the convex mold surface of the first mold on which the convex mold surface is formed, and the second mold on which the concave mold surface is formed. A second mold holding portion for holding a non-molding surface portion opposite to the concave molding surface;
A computer for storing preliminarily measured dimension information for each of the first mold and the second mold;
Model number information specifying the first mold and the second mold corresponding to the dimension information is displayed, respectively, and at least one of the non-molded surface portion and the peripheral surface portion of the first mold and the second mold, respectively. A display unit provided;
Reading means for reading the model number information displayed on the display unit and transmitting the read model number information to the computer;
Relative movement means for relatively moving the first mold and the second mold;
A tape winding means for winding a tape around the peripheral surfaces of the first mold and the second mold that are relatively moved by the relative movement means;
The computer collates the model number information read by the reading unit with the stored dimension information, and relatively moves the first mold and the second mold based on the dimension information that matches the model information. A molding mold assembling apparatus, wherein a command is sent to the relative moving means. In the molding assembly apparatus according to claim 1,
The mold assembly apparatus for molding, wherein the display unit is a bar code. In the molding assembly apparatus according to claim 2,
The mold assembly apparatus for molding, wherein the barcode is a two-dimensional barcode. In the molding mold assembling apparatus according to any one of claims 1 to 3,
The dimension information includes a dimension between a peripheral edge of the first molding die and a contact position of the first molding die holding portion to the first molding die, and the first molding die to the first molding die. The dimension between the contact position of the holding part and the center position of the convex molding surface, and the distance between the contact position of the second mold holding part to the second mold and the center position of the concave molding surface. A mold assembly apparatus for molding, characterized by comprising dimensions. In the molding mold assembling apparatus according to any one of claims 1 to 4,
The tape winding means is disposed to face the peripheral surfaces of the first mold and the second mold with the tape feeder for supplying the tape and the tape supplied from the tape feeder being interposed therebetween. And a roller for winding the tape around a peripheral surface of the second mold, and the tape feeder matches the diameter of the first mold and the second mold and the first mold and the second mold. 2. A mold assembly apparatus for molding, wherein the supply position of the tape with respect to the center of the mold is adjusted. In the molding mold assembly apparatus according to claim 5,
The mold assembly apparatus for molding, wherein the dimension information includes respective diameter dimensions of the first mold and the second mold.   The molding mold assembling apparatus according to any one of claims 1 to 6, the tape of the molding mold assembled by the molding mold assembling apparatus, the first molding die, and the second molding die. And a resin injecting device for injecting a resin raw material into the cavity between. A dimension information storage step of storing, in a computer, dimension information measured in advance for each of the first mold on which the convex molding surface is formed and the second mold on which the concave molding surface is formed;
A display unit for displaying, on the first molding die and the second molding die, model number information for specifying the first molding die and the second molding die corresponding to the dimension information stored in the computer. Model number information display step provided on at least one of the non-molding surface portion and the peripheral surface portion of the molding die and the second molding die;
An information reading step of reading the model number information displayed in the model number information display step with a reading unit;
A relative movement step in which the model number information read in the information reading step and the dimension information stored in the computer are made to correspond to each other and the first shaping die and the second shaping die are relatively moved;
A method for assembling a molding mold, comprising: a tape winding step of winding a tape around the peripheral surfaces of the first molding die and the second molding die.   After assembling the molding mold by the molding method for assembling the molding mold according to claim 8, in the cavity constituted by the tape of the molding mold, the first molding die and the second molding die. A method for producing a plastic lens, comprising injecting a resin raw material.

Images