JP2007238385A - Molding apparatus and molding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a molding apparatus where, when two molds are aligned, wear and damage of the molds can be prevented, and further, the respective molds can be closed at the same axial center position without being influenced by heat of the molds upon molding. <P>SOLUTION: The molding apparatus 1 is provided with: an upper mold 10 (first mold) and a lower mold 20 (second mold) each composed so as to form a cavity upon mold closing and to mold a product in the cavity; and a guide member 30 extensively provided to the mold opening/closing direction. The upper mold 10 is fitted to a supporting member 40 movable to the die opening/closing direction along the guide member 30, the lower die 20 is fitted to a slide base 90 (position adjusting member) movable in the vertical direction to the die opening/closing direction, and temperature controlling members 60a, 60b (temperature controlling means) for fixedly holding the temperature of the supporting member 40 or slide base 90 are provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a molding apparatus configured to mold a product in a cavity formed when two molds are closed, and a molding method using the molding apparatus.

As a molding apparatus for manufacturing an optical component such as a glass lens, for example, as shown in FIG. 8, the upper mold 110 and the lower mold 120 having the cavity surfaces 111 and 121 are closed to form a cavity (not shown). In addition, there is a molding apparatus 100 that molds a product such as a lens by pressing a material in the cavity.
In the molding apparatus 100 described above, plate-like measurement terminals 130 and 130 that abut in two directions on the side peripheral surfaces of the upper mold 110 and the lower mold 120 are provided, and when the mold is closed, the upper mold 110 and the lower mold 120 are arranged in two. The positions of the upper mold 110 and the lower mold 120 can be detected by bringing them into contact with the body measurement terminals 130 and 130.
And based on the detection result of each measurement terminal 130 and 130, the position of the upper mold | type 110 or the lower mold | type 120 is adjusted, and the shaping | molding precision of a product is raised by aligning the upper mold | type 110 and the lower mold | type 120 centering. (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 5-163031 (paragraph 0009, FIG. 1)

However, in the above-described conventional molding apparatus 100, the upper mold 110 and the lower mold 120 are in direct contact with the measurement terminals 130 and 130 when the mold is closed. There is a problem that the molds 110 and 120 and the measurement terminal 130 are worn or damaged.
Further, when the upper mold 110 and the lower mold 120 are heated during molding, the heat of the upper mold 110 and the lower mold 120 is transmitted to the measurement terminal 130 and the measurement terminal 130 is thermally expanded, so that the detection result of the measurement terminal 130 is detected. There is a problem in that an error occurs and the molding accuracy of the product decreases.

  The present invention has been made in view of such a problem, and when aligning two molds, the mold can be prevented from being worn and damaged, and the influence of the mold heat during molding can be prevented. It is an object of the present invention to provide a molding apparatus and a molding method capable of closing each mold in the same axial position without being subjected to the above.

  In order to solve the above-mentioned problems, the present invention is a molding apparatus, wherein a first mold and a second mold configured to form a cavity when the mold is closed and mold a product in the cavity, A first mold is attached to a support member that is movable in the mold opening / closing direction along the guide member, and the second mold is in the mold opening / closing direction. Is attached to a position adjustment member that is movable in the vertical direction, and the support member and the position adjustment member are each provided with temperature control means for keeping the temperature of the support member or the position adjustment member constant. It is characterized by that.

  As described above, since the second mold is attached to the position adjusting member that is movable in the direction perpendicular to the mold opening / closing direction, the second mold is moved with respect to the first mold. The centering of the first mold and the second mold can be performed. In addition, since the first mold is attached to a support member that is movable in the mold opening / closing direction along the guide member, the first mold is kept at a certain distance from the reference guide member. However, it moves in the mold opening / closing direction along the guide member. Accordingly, the first mold and the second mold are moved in the mold closing direction while keeping the first mold and the second mold at the same axial center position. Can be closed in the state of the same axial center position, and it is not necessary to make the first mold and the second mold abut against other members at the time of mold closing as in the prior art, Wear and damage to the first mold and the second mold can be prevented.

  In addition, since temperature control means is provided to keep the temperature of the support member interposed between the first mold and the guide member constant, the heat of the first mold heated during molding is provided. The thermal expansion of the support member due to the can be prevented. Furthermore, since the temperature adjusting means for keeping the temperature of the position adjusting member to which the second mold is attached constant is provided, the position adjusting member by the heat of the second mold heated at the time of molding is provided. Thermal expansion can be prevented. Thus, after the first mold and the second mold are aligned, the positions of the first mold and the second mold do not change due to the heat of the mold. The second mold and the second mold can be closed at the same axial center position, and the molding accuracy of the product can be improved.

  In addition, as a temperature control means, there exists a structure which forms the circulation path of fluids, such as water, and keeps temperature constant, for example, The structure is not limited. Further, there are a configuration in which the temperature adjustment means is provided between the mold and the support member or the position adjustment member, and a configuration in which the temperature adjustment means is provided in the support member or the position adjustment member itself.

  The first mold is attached to the guide member via the support member, and the second mold is attached to the base member via the position adjustment member. Since the mold 2 is separated from the guide member and the base member, only the mold can be efficiently heated or cooled during molding. Thereby, the production efficiency of a product and the energy efficiency at the time of shaping | molding can be improved.

  In the molding apparatus described above, the first mold is attached to the support member via the heat insulating member, and the second mold is attached to the position adjusting member via the heat insulating member. be able to.

  In this way, by attaching the first mold and the second mold to the support member or the position adjustment member via the heat insulating member, the heat of the mold heated during molding is supported and the position adjustment. It can be made difficult to be transmitted to the member, and thermal expansion of the support member and the position adjusting member can be reliably prevented.

  In the molding method using the molding apparatus described above, the second mold is moved relative to the first mold by moving the position adjusting member in a direction perpendicular to the mold opening / closing direction, and Centering the first mold and the second mold, fixing the position adjusting member and positioning the second mold, and moving the first mold in the mold closing direction. Forming a product in the cavity by closing the first mold and the second mold.

  According to this configuration, the first mold is moved in the mold closing direction after the second mold is positioned with the first mold and the second mold being aligned. Since the first mold and the second mold move in the mold closing direction while maintaining the same axial position, the first mold and the second mold are surely in the same axial position. It is possible to increase the molding accuracy of the product.

  The method for aligning the first mold and the second mold is not limited. For example, the first mold is molded by the first mold and the second mold is molded. Alignment of the first mold and the second mold is performed by measuring the deviation from the molding surface and moving the second mold relative to the first mold based on the measured value. There is a way to do. Further, the first mold and the second mold are sandwiched between the first mold and the second mold by the positioning members that contact at least three directions of the outer peripheral surfaces of the first mold and the second mold. The method of centering the two molds, the center of the cavity surface of the first mold and the second mold is detected, and based on the relative positional relationship between the first mold and the second mold There is also a method of aligning the molds. In addition, in order to prevent the shift | offset | difference by the thermal expansion of a metal mold | die, it is desirable to perform center alignment in the state in which the 1st metal mold | die and the 2nd metal mold | die were heated.

According to the present invention, the second mold can be moved with respect to the first mold so that the first mold and the second mold can be aligned, and the first mold is used. Moves in the mold opening / closing direction along the guide member while maintaining a certain distance from the reference guide member, so that the first mold and the second mold are kept in the same axial position. However, the first mold and the second mold can be closed in the same axial position by moving the first mold in the mold closing direction. This eliminates the need for centering by bringing the first mold and the second mold into contact with other members when the mold is closed, as in the prior art. Therefore, the first mold and the second mold are not required. Mold wear and damage can be prevented.
Moreover, thermal expansion of the supporting member and the position adjusting member due to the heat of the mold heated during molding can be prevented by the temperature adjusting means. Thus, after the first mold and the second mold are aligned, the positions of the first mold and the second mold do not change due to the heat of the mold. The first mold and the second mold can be closed at the same axial center position, and the molding accuracy of the product can be increased.
Further, the first mold and the guide member are separated from each other via the support member, and the second mold is attached to the base member via the position adjusting member, so that only the mold can be efficiently used at the time of molding. It can be heated or cooled, and the production efficiency of the product and the energy efficiency during molding can be improved.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the present embodiment, a case where the molding apparatus and the molding method of the present invention are applied to manufacture of a glass optical lens (hereinafter simply referred to as “lens”) will be described.
In the description of each embodiment, the same constituent elements are denoted by the same reference numerals, and redundant descriptions are omitted.

<First Embodiment>
First, after describing the configuration of the molding apparatus according to the first embodiment, a molding method using the molding apparatus will be described.
FIG. 1 is a perspective view showing the molding apparatus of the first embodiment. FIG. 2 is a partially enlarged side view showing the molding apparatus of the first embodiment. FIG. 3 is a side view showing, in a partial cross-section, an aspect in which the rod of the cylinder pushes the support member obliquely in the molding apparatus of the first embodiment.
In the following description, the front / rear / left / right direction corresponds to the front / rear / left / right direction shown in FIG.

[Configuration of molding equipment]
As shown in FIG. 1, the molding apparatus 1 forms a cavity (not shown) when the mold is closed, and an upper mold 10 configured to mold a lens in the cavity (“first” in the claims) And the lower mold 20 (the “second mold” in the claims), a guide member 30 extending in the mold opening / closing direction (vertical direction), and supporting the guide member 30 The base member 70 is provided.

(Configuration of upper mold and lower mold)
The upper mold | type 10 and the lower mold | type 20 are the metallic members formed in the column shape as shown in FIG.1 and FIG.2, and are arrange | positioned in the state facing up and down.
In the upper mold 10, a cavity surface 11 is formed on the lower end surface, and a mounting flange portion 12 is formed on the outer periphery of the upper end portion. On the other hand, in the lower mold 20, a cavity surface 21 is formed on the upper end surface, and a mounting flange portion 22 is formed on the outer periphery of the lower end portion.

  The upper mold 10 is attached to a support member 40 that can move in the mold opening / closing direction (vertical direction) along the guide member 30, and can be moved along the guide member 30 in the mold opening / closing direction together with the support member 40. It has become.

  The lower mold 20 is attached to the upper surface of a slide base 90 (“position adjusting member” in the claims) attached to a substrate 71 of a base member 70 described later.

(Configuration of support member)
As shown in FIGS. 1 and 2, the support member 40 is attached to slide portions 32 and 32 of a guide member 30 described later, and the support member 40 is slidable in the mold opening / closing direction (vertical direction). Along with the slide part 32, it is movable in the mold opening and closing direction.

  The support member 40 is a rectangular parallelepiped formed of a material such as stainless steel, ceramics, or super hard metal. In the support member 40, the rear surface on the guide member 30 side is an attachment surface 41 attached to the slide portion 32, and two slide portions 32, 32 are attached to the attachment surface 41. In addition, a notch 43 cut out at a right angle is formed at the lower corner of the front surface opposite to the attachment surface 41.

  Further, the upper die 10 is attached to the lower surface of the support member 40 via a heat insulating member 50 and a temperature adjusting member 60a described later (“temperature adjusting means” in the claims).

(Slide base configuration)
As shown in FIGS. 1 and 2, the slide base 90 is attached to the upper surface of a substrate 71 of a base member 70 described later. The slide base 90 is vertically divided into three parts, and includes a lower part 91, an intermediate part 92, and an upper part 93. The lower part 91 is fixed to the upper surface of the substrate 71.

  The intermediate portion 92 is slidable in the left-right direction with respect to the lower portion 91, and the upper portion 93 provided above the intermediate portion 92 is also moved in the left-right direction with respect to the lower portion 91. become. Further, the upper part 93 is movable by sliding in the front-rear direction with respect to the intermediate part 92. That is, the upper part 93 is movable in the front-rear and left-right directions with respect to the substrate 71 of the base member 70. Moreover, the lower mold | type 20 is attached to the upper surface of this upper part 93 via the temperature control member 60b.

  The slide base 90 of the present embodiment is configured such that the intermediate portion 92 and the upper portion 93 are slid by a screw mechanism, and a dial (not shown) provided on the outer surface is operated to operate the intermediate portion 92 and By sliding the upper part 93, the position of the lower mold 20 attached to the upper surface of the upper part 93 can be adjusted in the front-rear and left-right directions.

(Configuration of heat insulation member)
As shown in FIG. 2, the heat insulating member 50 is a columnar member interposed between the upper mold 10 and the temperature adjustment member 60a and between the lower mold 20 and the temperature adjustment member 60b. The heat insulating member 50 makes it difficult to transfer the heat of the upper mold 10 and the lower mold 20 heated during molding to the support member 40 side or the slide base 90 side, and is formed of a material such as ceramics. Further, on both upper and lower ends of the heat insulating member 50, a mold side flange portion 51 to which the mounting flange portions 12 and 22 of the upper mold 10 or the lower mold 20 are attached, and horizontal portions 61a and 61b of the temperature adjusting members 60a and 60b. The temperature control member side flange part 52 attached to is formed.

(Configuration of temperature control member)
As shown in FIG. 2, the upper temperature adjustment member 60 a is a member interposed between the heat insulating member 50 and the support member 40 in order to keep the temperature of the support member 40 constant.
The upper temperature control member 60a is formed in an L shape by a horizontal portion 61a and a vertical portion 62a formed downward from the rear end portion of the horizontal portion 61a. The upper surface of the horizontal portion 61a is The upper die 10 is attached to the lower surface of the notch 43 of the support member 40, and the lower surface of the horizontal portion 61a via the heat insulating member 50.
A circulation path for circulating a fluid such as water is formed inside the upper temperature control member 60a, and the fluid is supplied by a supply pipe 63a connected from the outside.

  As shown in FIG. 2, the lower temperature adjustment member 60b is a member interposed between the heat insulating member 50 and the slide base 90 in order to keep the temperature of the slide base 90 constant. The configuration is substantially the same as that of the upper temperature adjustment member 60a. In the temperature control member 60b on the lower side, a vertical portion 62b is formed upward from the rear end portion of the horizontal portion 61b, and the lower surface of the horizontal portion 61b is attached to the upper surface of the upper portion 93 of the slide base 90. The lower mold 20 is attached to the upper surface of the part 61b via a heat insulating member 50. Further, the circulation path formed inside is configured to be supplied with fluid from the supply pipe 63b.

(Configuration of guide member)
As shown in FIGS. 1 and 2, the guide member 30 includes a rail part 31 extending in the mold opening / closing direction (vertical direction), and two bodies that can slide in the mold opening / closing direction by sliding the rail part 31. This is a known linear slider including slide portions 32 and 32. The rail portion 31 of the guide member 30 is attached to a vertical surface 72b formed on a column 72 of the base member 70 described later.
An attachment surface 41 of the support member 40 is attached to the front surface of each slide portion 32, 32.

(Configuration of base member)
As shown in FIG. 1, the base member 70 includes a flat substrate 71, a support column 72 standing on the upper surface of the substrate 71, and a cylinder unit 80 provided on the top 72 a of the support column 72. The rail portion 31 of the guide member 30 is attached to the vertical surface 72 b formed on the support column 72.

  The cylinder portion 80 is a driving means for pushing out the support member 40 in the mold closing direction (downward direction), and is configured to move the rod 81 in and out of the cylinder body 82 in the vertical direction. The cylinder unit 80 uses a known cylinder mechanism, and its drive source is not limited to hydraulic pressure or electric drive.

  As shown in FIG. 3, the lower end portion 81 a of the rod 81 is loosely fitted in the insertion hole 44 formed in the upper surface of the support member 40. A ball member 45 is fitted into the bottom portion of the insertion hole 44, and the lower end surface of the rod 81 is in contact with the upper end portion of the ball member 45.

In addition, as shown in FIG. 1, two coil springs 73 for pulling up the support member 40 moved downward are provided on the top 72 a of the support column 72 of the base member 70. The upper end portions of the coil springs 73 are fixed to the left and right side surfaces of the top portion 72 a of the support column 72, and the lower end portions are fixed to the left and right side surfaces of the support member 40, respectively.
When the support member 40 is pushed out in the mold closing direction (downward) by the rod 81 of the cylinder portion 80, the two coil springs 73 and 73 are in an extended state. Further, when the rod 81 is contracted when the mold is opened, the tensile force of each coil spring 73, 73 acts on the support member 40, and the support member 40 is pulled up in the mold opening direction (upward direction).
The driving means for moving the support member 40 in the mold closing direction is not limited to the above-described configuration, and the input member such as a rod is not fixed to the support member 40 and has a degree of freedom. Any structure that can reliably push the support member 40 in the mold opening / closing direction or pull it up may be used.

[Molding method using molding equipment]
Next, a lens molding method using the molding apparatus 1 of the first embodiment will be described.
First, as shown in FIGS. 1 and 2, a glass material is placed on the cavity surface 21 of the lower mold 20 with the upper mold 10 and the lower mold 20 opened. At this time, the upper mold 10 and the lower mold 20 are heated to a predetermined temperature suitable for forming the glass material. In addition to the heating of the upper mold 10 and the lower mold 20, the fluid is circulated through the circulation paths in the temperature control members 60 a and 60 b.
The heating means of the upper mold 10 and the lower mold 20 is heated by a heater provided in the upper mold 10 and the lower mold 20 or by a heat source such as a halogen lamp close to the upper mold 10 and the lower mold 20. The configuration is not limited.

  Subsequently, by extending the rod 81 of the cylinder portion 80, the support member 40 is moved along the guide member 30 in the mold closing direction (downward), and the upper mold 10 and the lower mold 20 are closed. In this manner, a cavity (not shown) is formed between the upper mold 10 and the lower mold 20, and the glass material is pressed and molded in the cavity.

  At this time, as shown in FIG. 3, the rod 81 of the cylinder portion 80 pushes the support member 40 through the ball member 45 fitted in the bottom of the insertion hole 44 of the support member 40, The pressing force is transmitted from the lower end portion of the ball member 45 to the bottom surface of the insertion hole 44. Therefore, even when a pressing force is transmitted obliquely from the diagonally inclined rod 81 to the ball member 45, the pressing force is transmitted from the lower end portion of the ball member 45 to the bottom surface of the insertion hole 44. 40 is pushed by the vertical pressing force, and the support member 40 moves along the guide member 30 in the mold closing direction (downward).

  After the glass material (lens) after molding is solidified, the rod 81 of the cylinder portion 80 is contracted as shown in FIGS. Since the tensile force of each of the coil springs 73 and 73 acts on the support member 40, the support member 40 is pulled up in the mold opening direction (upward) along the guide member 30, and the upper mold 10 and the lower mold 20 are moved. Opened. Then, the lens is taken out from the cavity surface 21 of the lower mold 20.

  Thereafter, in the molded lens, the relative position between the center of the optical surface molded by the upper mold 10 and the center of the optical surface molded by the lower mold 20 is measured, and the slide is determined based on the measured value. By moving the intermediate portion 92 and the upper portion 93 of the base 90 in the front-rear and left-right directions, the lower die 20 is moved with respect to the upper die 10, and the upper die 10 and the lower die 20 are aligned.

  Thus, after performing the center alignment of the upper mold 10 and the lower mold 20, again by placing a glass material on the cavity surface 21 of the lower mold 20, and moving the upper mold 10 in the mold closing direction, The upper mold 10 and the lower mold 20 are closed to mold the glass material. At this time, the upper die 10 moves along the guide member 30 while keeping the upper die 10 and the lower die 20 at the same axial center position. Therefore, in the molded lens, the optical surface molded by the upper mold 10 and the optical surface molded by the lower mold 20 are in the same axial position, so that a lens molded with high accuracy can be manufactured. it can.

[Functional effects of molding equipment]
In the molding apparatus 1 described above, as shown in FIGS. 1 and 2, the lower mold 20 is attached to a slide base 90 that is movable in a direction perpendicular to the mold opening / closing direction. The lower mold 20 can be moved, and the upper mold 10 and the lower mold 20 can be aligned. Further, since the upper mold 10 is attached to the support member 40 that can move in the mold opening / closing direction along the guide member 30, the upper mold 10 is maintained at a certain distance from the reference guide member 30. Then, it moves in the mold opening / closing direction along the guide member 30. That is, the upper mold 10 and the lower mold 20 can be closed in the same axial center position by moving the upper mold 10 in the mold closing direction while keeping the upper mold 10 and the lower mold 20 in the same axial position. In addition, as in the prior art, it is not necessary to align the upper die 10 and the lower die 20 with other members when the die is closed, so that the upper die 10 and the lower die 20 are prevented from being worn and damaged. it can.

  The upper mold 10 is attached to the support member 40 via the heat insulating member 50 and the temperature adjusting member 60a, and the lower mold 20 is attached to the slide base 90 via the heat insulating member 50 and the temperature adjusting member 60b. The heat of the upper mold 10 and the lower mold 20 is hardly transmitted to the support member 40 and the slide base 90 by the heat insulating member 50, and the temperature of the support member 40 and the slide base 90 is made constant by the temperature adjusting members 60a and 60b. Therefore, thermal expansion of the support member 40 and the slide base 90 can be prevented. Thus, after the upper mold 10 and the lower mold 20 are aligned, the positions of the upper mold 10 and the lower mold 20 do not change due to the heat of the molds 10 and 20. Can be closed at the same axial center position, and the molding accuracy of the lens can be improved.

  Further, since the upper mold 10 and the guide member 30 are separated via the support member 40, and the lower mold 20 and the base member 70 are separated via the slide base 90, the molds 10, 20 are formed at the time of molding. Only can be efficiently heated or cooled. Thereby, the production efficiency of a lens and the energy efficiency at the time of shaping | molding can be improved.

  The upper mold 10 and the lower mold 20 are attached to the support member 40 and the slide base 90 in the mold opening / closing direction. Even if the upper mold 10 and the lower mold 20 are thermally expanded, the upper mold 10 and the lower mold 20 are mounted. Since the whole 20 does not shift in the vertical direction (lateral direction) with respect to the mold opening / closing direction (vertical direction), the upper mold 10 and the lower mold 20 can maintain the same axial center position.

Second Embodiment
Next, the shaping | molding method of 2nd Embodiment is demonstrated.
FIG. 4 is a diagram showing the molding method of the second embodiment, and is a schematic diagram showing an aspect in which the molds are aligned.
In addition, the shaping | molding apparatus used for the shaping | molding method of 2nd Embodiment is the structure similar to the shaping | molding apparatus 1 (refer FIG.1 and FIG.2) of above described 1st Embodiment. Furthermore, the molding method of the second embodiment has substantially the same configuration as the molding method of the first embodiment described above, and the method of aligning the upper mold and the lower mold is different.

  As shown in FIG. 4, in the molding method of the second embodiment, when the upper mold 10 and the lower mold 20 are aligned, the upper surface M1 and the lower surface M2 are disposed between the upper mold 10 and the lower mold 20 and the reflecting surface. A plate-like mirror M is arranged. At this time, the mirror M is inclined at 45 degrees so that the upper surface M1 faces the left side and the lower surface M2 faces the right side.

Laser oscillators L1 and L2 that can oscillate horizontal laser beams La and Lb toward the upper surface M1 or the lower surface M2 of the mirror M are arranged on both the left and right sides of the mirror M.
First, a laser beam La is oscillated from the laser oscillator L1 on the left side and is applied to the upper surface M1 of the mirror M. The laser beam La is refracted upward at a right angle on the upper surface M1 of the mirror M, and is applied to the cavity surface 11 of the upper mold 10.
Here, the laser oscillator L1 is configured such that when the laser beam La is irradiated perpendicularly to the surface and reflected, the reflected light is incident on the laser oscillator L1. Therefore, when the laser beam La is reflected at the center of the spherical surface of the cavity surface 11, the reflected light is refracted by the upper surface M1 of the mirror M at a right angle toward the left and is incident on the left laser oscillator L1. It will be.
Thus, the position of the mirror M is adjusted so that the reflected light of the laser beam La is incident on the left laser oscillator L1.

Subsequently, the laser beam Lb is oscillated from the laser oscillator L2 on the right side and applied to the lower surface M2 of the mirror M. The laser beam Lb is refracted at a right angle downward at the lower surface M2 of the mirror M and is irradiated onto the cavity surface 21 of the lower mold 20. At this time, the laser beam Lb irradiated downward and the laser beam La emitted from the left laser oscillator L1 and irradiated upward are set to coincide with each other.
In the right laser oscillator L2, similarly to the left laser oscillator L1, when the laser beam Lb is reflected at the center of the spherical surface of the cavity surface 21, the reflected light is directed rightward on the lower surface M2 of the mirror M. The light is refracted at right angles and is incident on the right laser oscillator L2.

  Then, the position of the lower mold 20 is adjusted in the front-rear and left-right directions so that the reflected wave of the laser beam Lb is incident on the right laser oscillator L2. As a result, the laser beam Lb irradiates the center of the cavity surface 21 of the lower mold 20, and the optical axis of the laser beam Lb is the laser beam irradiated to the center of the cavity surface 11 of the upper mold 10. Since it coincides with the optical axis of La, the upper mold 10 and the lower mold 20 are arranged at the same axial center position.

  According to the molding method of the second embodiment as described above, when the upper mold 10 and the lower mold 20 are aligned, a prototype for measuring the misalignment between the axial positions of the upper mold 10 and the lower mold 20. Therefore, the upper mold 10 and the lower mold 20 can be easily disposed at the same axial center position.

<Third Embodiment>
Next, the shaping | molding apparatus and shaping | molding method of 3rd Embodiment are demonstrated.
FIGS. 5A and 5B are views showing a molding method according to the third embodiment, in which FIG. 5A is a perspective view showing a mode in which the molds are aligned, and FIG. 5B is a partial cross-sectional perspective view of FIG. FIG. FIG. 6 is a diagram showing the molding method of the third embodiment, and is a plan sectional view showing an aspect in which the upper die and the lower die are sandwiched by the positioning block.

  As shown in FIG. 5A, the molding apparatus 1 ′ of the third embodiment has substantially the same configuration as the molding apparatus 1 of the first embodiment described above (see FIGS. 1 and 2). The configuration is different. Further, the molding method of the third embodiment has substantially the same configuration as the molding method of the first embodiment described above, and the method of aligning the upper mold and the lower mold at the time of molding the lens is different.

The slide base 90 ′ of the molding apparatus 1 ′ of the third embodiment has a configuration in which an upper part 93 ′ is placed on the upper surface of the lower part 91 ′. The upper part 93 ′ slides on the upper surface of the lower part 91 ′. It is movable in the horizontal direction (front / rear / left / right direction).
Further, as shown in FIG. 5 (b), the lower portion 91 ′ of the slide base 90 ′ of the third embodiment is a hollow body, and the upper wall thereof has suction holes 91b... Communicating with the internal space 91a.・ Multiple penetrates. Further, a suction pipe 91c for sucking air from the internal space 91a is connected to the front surface of the lower portion 91 ′. When air is sucked out from the internal space 91a through the suction pipe 91c, the upper portion 93 ′ is sucked onto the upper surface of the lower portion 91 ′ by the suction force generated in the suction holes 91b.

  In the molding method using the molding apparatus 1 ′ of the third embodiment, when centering the upper mold 10 and the lower mold 20, the upper mold 10 and the lower mold 20 are heated to a temperature suitable for molding, and then the slide base is used. With two upper positioning blocks A1 and A2 in contact with at least three directions of the outer peripheral surfaces of the upper mold 10 and the lower mold 20, as shown in FIG. The upper mold 10 and the lower mold 20 are sandwiched. Further, by tightening the two bolts B and nuts N passing through the positioning blocks A1 and A2, the lower mold 20 is pushed into the positioning blocks A1 and A2, and the upper mold 20 has the same axial center position. Will be moved to.

  In this way, after the upper mold 10 and the lower mold 20 are arranged at the same axial center position, as shown in FIG. 5A, the air in the internal space 91a is sucked from the suction pipe 91c of the lower portion 91 ′, Upper part 93 'is made to adsorb | suck to the upper surface of lower part 91'. Furthermore, the lower die 20 is positioned at the same axial center position as the upper die 10 by fixing the upper portion 93 ′ to the lower portion 91 ′ by fixing means such as a bolt.

Thereafter, the positioning blocks A1 and A2 are removed from the upper mold 10 and the lower mold 20, and the upper mold 10 and the lower mold 20 are moved in the mold closing direction while maintaining the same axial center position. The mold 10 and the lower mold 20 are closed at the same axial center position to manufacture a lens.
In this manner, the upper mold 10 and the lower mold 20 are sandwiched between the positioning blocks A1 and A2, so that the upper mold 10 and the lower mold 20 can be easily and reliably aligned.

[Other Embodiments]
As mentioned above, although embodiment of this invention was described in detail with reference to drawings, this invention is not limited to each above-mentioned embodiment, In the range which does not deviate from the main point of this invention, it can change suitably. .

For example, in the first embodiment, as shown in FIG. 2, temperature control members 60a and 60b are provided between the upper mold 10 and the support member 40 and between the lower mold 20 and the slide base 90, respectively. The temperature of the support member 40 and the slide base 90 can be kept constant by providing temperature control means such as a fluid circulation path in the support member 40 and the slide base 90 itself, and the configuration is not limited. .
In addition, if the thermal control members 60a and 60b can prevent thermal expansion of the support member 40 and the slide base 90, the heat insulating member 50 may not be provided.

  In the present embodiment, as shown in FIG. 2, a known linear slider is used as the guide member 30. However, the guide member 30 is moved along the reference without significantly wearing the support member 40. The configuration is not limited as long as it can be used, and a known air slide or the like can also be used.

  In the present embodiment, as shown in FIG. 2, the upper mold 10 and the support member 40 are attached in the mold opening / closing direction (vertical direction). However, as shown in FIG. Can also be configured to be attached in a direction perpendicular to the mold opening / closing direction (front-rear direction). Furthermore, in the configuration shown in FIG. 7, when the upper die 10 is moved in the die opening / closing direction while pressing the upper die 10 against the guide member 30 from the front by pressing means such as a cylinder or a spring, The mold 10 can be moved stably.

It is the perspective view which showed the shaping | molding apparatus of this embodiment. It is the partial expanded side view which showed the shaping | molding apparatus of this embodiment. In the shaping | molding apparatus of this embodiment, it is the side view which showed the aspect which the rod of the cylinder pushed the supporting member diagonally in the partial cross section. It is the figure which showed the shaping | molding method of 2nd Embodiment, and is the schematic diagram which showed the aspect which has centered the metal mold | die. It is the figure which showed the shaping | molding method of 3rd Embodiment, (a) is the perspective view which showed the aspect which has aligned the metal mold | die, (b) is the fragmentary sectional perspective view of Fig.5 (a). It is the figure which showed the shaping | molding method of 3rd Embodiment, and is plane sectional drawing which showed the aspect which pinched | interposed the upper mold | type and the lower mold | type with the positioning block. It is the elements on larger scale which showed the metal mold | die of other embodiment. It is the perspective view which showed the conventional shaping | molding apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Molding apparatus 10 Upper mold | type 20 Lower mold | type 30 Guide member 31 Rail part 32 Slide part 40 Support member 50 Thermal insulation member 60a Upper temperature control member 60b Lower temperature control member 70 Base member 80 Cylinder part 81 Rod 90 Slide base

Claims (3)

A first mold and a second mold configured to form a cavity when the mold is closed and to mold a product in the cavity;
A guide member extending in the mold opening and closing direction,
The first mold is attached to a support member movable in a mold opening / closing direction along the guide member,
The second mold is attached to a position adjusting member movable in a direction perpendicular to the mold opening / closing direction,
The molding apparatus, wherein the support member and the position adjustment member are each provided with temperature control means for keeping the temperature of the support member or the position adjustment member constant. The first mold is attached to the support member via a heat insulating member,
The molding apparatus according to claim 1, wherein the second mold is attached to the position adjusting member via a heat insulating member. A molding method using the molding apparatus according to claim 1 or 2,
By moving the position adjusting member in a direction perpendicular to the mold opening / closing direction, the second mold is moved with respect to the first mold, and the first mold and the second mold are moved. The stage of aligning the mold,
Fixing the position adjusting member and positioning the second mold;
Forming the product in the cavity by moving the first mold in a mold closing direction and closing the first mold and the second mold. Molding method.

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