TW200948576A - Press forming device for optical element - Google Patents

Abstract

A press forming device for an optical element for forming an optical element by pressing a glass material between a plurality of upper dies and a plurality of lower dies forming pairs with the upper dies, the device comprising a means for imparting a pressure to the plurality of lower dies, a body mold into which the plurality of pairs of upper dies are inserted from above and the plurality of pairs of lower dies are inserted from below and which guides the relative position of the upper and lower dies, a pressure generating means for pressing the body mold upward, and an upper die pressure distribution means for pressing each upper die downward as the body mold is moved upward by a pressing force generated by the pressure generation means and applying a pressure independently to each upper die, characterized in that the upper die pressure distribution means; comprises an upper cylinder receiving a load by a pressure acting on an upper die, and an upper rocking member arranged to be able to rock on a fulcrum and having one end abutting on the upper end of the upper die and the other end coupled with the upper cylinder; regulates a pressure being applied from the upper cylinder to each upper die through the upper rocking member in a process for moving the body mold upward by the pressure generation means; and presses the lower die upward by the means for imparting a pressure to the lower dies.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press forming apparatus for an optical element, and more particularly to an optical element used in the form of a high-precision optical element such as an aspherical lens. Stamping and forming device. [Prior Art] In recent years, a type of optical glass element such as a glass lens has been formed by press forming

A precision press forming method which is used as it is, and which does not perform a grinding process on a forming surface, has been attracting attention. Usually, in such forming, a press forming apparatus for an optical element is used which is attached to a mold, and a forming mold (upper mold, lower mold) that slides relative to the mold is used, and the pair is softened. The glass material is pressed between the upper mold and the lower mold to form an optical functional surface corresponding to the molding surface of the mold on the glass material. Here, it is important that when the product is relatively small, if the sheet press molding machine is formed by the i-die, the productivity is low. Therefore, a method in which a plurality of dies are mounted on one press forming machine to simultaneously generate a plurality of optical elements is proposed (refer to Japanese Patent No. 2815037). ^When a plurality of dies are simultaneously pressurized, it is necessary to seek a method for obtaining an optical element having high forming precision as the method, and the primary consideration is to use a ridge that is fixed orthogonally to the sliding direction of the mold. A method of pressing a plurality of dies by pressing members such as flat plates on a shaft. If this method is used, the stroke of all the modes will be determined based on the mode with the shortest stroke in the plurality of modes. Therefore, when forming an optical element having a thickness of a wall and a tilting precision of the surface in micrometers, in order to make the stroke all limited to the specification of 139984.doc 4 200948576, it is necessary to size the respective molds and the extruded member. The size, the installation of the extruded member, the inclination during pressurization, the wear and deformation of the contact portion between the squeeze member and the mold are fully managed, and the forming machine is also included under the forming conditions of the helmet. The situation of deformation makes it almost impossible to manage. Therefore, it is necessary to make the upper mold as the molding die touch the chest mold, and the above precision is ensured by the precision of the upper mold and the constituent members of the jaw and the other mold. However, in the above-mentioned press method towel, the stroke is the same for all the molds, so according to the same reason as above, all the molds are always pressed to the limit, and the degree of freedom is also considered. The method of squeezing so that the pressing member follows the stroke without fixing, but for a plurality of dies, especially for more than 4 dies, the heights of the modules from the right C to the limit are not all in the same On the flat surface, it is impossible to mold all of them to the limit. Due to the uneven size of the formed material or the subtle temperature difference between the molds during pressurization, the position at which the pressurization starts and the speed of forming (the deformation speed of the glass) are caused. There is a difference between the respective molds, so that the pressing member is frequently pressed in a state where the phase weight is tilted in the direction of the slip of the core. Therefore, there is a pressure application in addition to the sliding direction of the mold. Therefore, the valley is liable to cause scratching or breakage of the mold, and further, the contact portion between the mold and the pressing member is scratched and easily rubbed, and the wear is particularly intensified in the above-mentioned high temperature state. As a result of the wear, a vicious cycle that further contributes to the scratching or breakage of the mold is caused. Further, in the above-mentioned forming apparatus, in order to control the temperature of the glass material during the press forming process, it is necessary to have a relatively large temperature difference.胴 139984.doc 200948576 , and the lower mold is heated and cooled. Therefore, the mold, the upper mold, and the lower mold are formed by using materials having substantially the same thermal expansion coefficient, and are provided to ensure the upper mold and the lower mold relative to the crucible. The gap between the sliding of the mold. & Therefore, for example, when the upper mold is lowered and the paste is formed in the same manner as the lower mold, if the center of the upper mold is not applied, the force is not caused during the sliding of the upper mold. Therefore, the glass material cannot be pressed into the spring in a state in which the molding surfaces of the upper mold and the lower mold are correctly matched with each other. Further, in an extreme case, damage may occur between the mold and the upper mold, and thus it is impossible to The upper mold is completely closed with respect to the die, which is often true. In other words, the result is that the center of the formed optical functional surface and the optical axis are not. x, in order to be in the mold When the molded product is taken out and the upper mold is lifted, if the lifting force deviates from the center of the upper mold, the upper mold is inclined, and damage occurs between the mold and the upper mold, so that the upper mold cannot be opened and closed. In the case where the gap between the die and the upper part of the upper mold is 10 μm or less, and the use of the heating is caused by the above-mentioned forming apparatus, the above-mentioned forming apparatus exists in an environment where the above-mentioned scratching is more likely to occur. Patent Document No. 281 5037 discloses a forming apparatus, as an example of solving the above-described disadvantages of the prior art to some extent. 曰 * In the forming apparatus of the patent No. 2815037, 'the stamping is applied to the upper mold. Between the punching shaft and the upper die of the force, a plurality of coil springs are arranged in a stack, whereby even if the height of the die is different during pressurization, the deformation of the coil spring can be utilized to determine the difference between the heights, thereby uniformizing the respective modes. Apply pressure to the ground. [Problem to be Solved by the Invention] 139984.doc 200948576 However, in the forming skirt of Japanese Patent No. 2815037, since the coil spring exists in the vicinity of the upper mold, the coil spring is exposed to high temperature. There is a problem of slack. Further, in order to compensate for this drawback, it is necessary to water-cool a portion of the coil spring, but in order to perform water cooling, there is a problem that the member is increased in size and complexity. Further, the member after water cooling contacts the upper mold at the time of molding, and the degree of the upper mold is drastically lowered, so that the temperature of the formed glass becomes unstable. Further, in order to reduce the cost, a plurality of upper and lower dies are placed in the stencil, so it is economically impossible to increase the distance between the modules. Therefore, even if the distance between the modules is large, it is usually only several tens of millimeters, and it is necessary to provide a coil spring on the shaft corresponding to one of the roots of the interval. Generally, the pressure required for glass press forming is about 49 kN for the #18 mold, so the spring used for the coil spring must have a strength of 4.9 kN or more. A 4.9 kN wrap spring housed in a space of tens of millimeters does not usually exist. Therefore, in the patent No. 2815037, a coil spring is used, but even if the space for the coil spring is to be 4.9 cc, it is necessary to make a plurality of "springs" (four) which will cause the spring mechanism. A defect in which a part of the length becomes very long causes a problem that the forming apparatus is enlarged. Moreover, when the size of the lens to be washed differs from the original schedule and a situation in which the dusting force needs to be greatly changed, it is necessary to replace the coil spring to change the magazine constant 'but the parts of the stacked disc will be accommodated. When it is decomposed to replace the coil spring of Yizhong, it will consume a lot of labor and working hours. As described above, the above-mentioned problem still exists in the forming apparatus of the Japanese Patent Publication No. 289, 1984. Further, in the Japanese Patent Publication No. 2815〇37, there is no description of the pressure distribution at the time of sliding the dies in the dies, and it is presumed that the mechanism for pressing the dies is a mechanism that does not perform pressure distribution. The present invention has been made in view of the above circumstances, and an object thereof is to provide a press forming apparatus for an optical element which has solved the above problems. [Technical means for solving the problem] The first embodiment of the present invention solves the above problems in a manner in which a press forming apparatus for an optical element is attached to a plurality of upper molds and a plurality of lower molds paired with the upper mold The optical component is formed by performing (four) on the glass material, and includes: a lower die pressure woven mechanism that applies pressure to the plurality of lower dies; and a dies that insert the plurality of upper dies from above

The lower mold is pressed upward by the mechanism.

\Each upper mold and independently apply pressure to each of the above upper molds; the above upper 槿 139984. Doc 200948576 The second embodiment of the present invention solves the above-described problems as described in the first aspect of the present invention, characterized in that the press molding apparatus includes at least the upper mold, the lower mold, and the mold. The upper body and the upper swinging member are disposed on an upper surface of the casing. According to a third aspect of the invention, in the above-described first or second embodiment, the press molding apparatus according to the first or second aspect, wherein the lower mold pressure applying mechanism is in accordance with the above-described pressure generating mechanism The pressing force is applied upward to press the plurality of lower molds upward. According to a fourth aspect of the present invention, in the above-described press forming apparatus according to the third embodiment, the lower die pressure applying mechanism includes a lower cylinder, and the crucible is subjected to the above-mentioned action. a load generated by the pressure on the mold, and a lower swinging member that is slidably disposed via a fulcrum, and one end of which is in contact with the lower end portion of the lower mold, and the other end portion is coupled to the lower cylinder; The lower swinging member swings from the fulcrum to adjust the force of the lower cylinder to the lower mold. 。 The fifth embodiment of the present invention solves the above-mentioned problems by the above-described press forming apparatus according to any one of the first to fourth embodiments, which includes a plurality of aligning mechanisms During the upward movement of the die by the pressing force of the pressure generating mechanism, the position of the upper die relative to the die is aligned, and the plurality of four (4) configurations each include: a spherical bearing The upper mold is rotatable 'to make the axis of the upper mold relative to the moving axis of the mold when the upward pressing action is performed on the upper mold; and the upper mold supporting member is formed as 139984. Doc 200948576 supports the outer side of the above spherical bearing and separates the spherical bearing by the pressing action toward the upper side. According to a sixth aspect of the present invention, in the above-described press forming apparatus of any one of the above-mentioned i-th to fifth aspect, in the above-mentioned upper-die pressure distribution mechanism, the fulcrum is swung in the upper portion The connection position in the longitudinal direction of the member is variable, and the pressure acting on the upper mold is adjusted in accordance with the ratio of the joint position e of the fulcrum to the total length of the upper swing member. According to a seventh aspect of the present invention, in the dust forming apparatus of the fourth aspect, the fulcrum is in the longitudinal direction of the lower swinging member. The connection position is variable, and the eighth embodiment of the pressure acting on the lower mold is adjusted according to the ratio of the total length of the joint swinging member of the fulcrum to solve the above problem in the following manner: as described in the fifth embodiment In the above-mentioned (four) force-distributing mechanism, in the above-mentioned upper (four) force distribution mechanism, the upper cylinder body may be changed to "force" acting on the upper mold according to the filling dust force. The ninth embodiment of the present invention solves the above problems in the following manner: for example, the above-described dust forming device in a state in which the lower mold is filled, and the filling force in the lower cylinder is The pressure applied to the lower mold is adjusted in accordance with the filling pressure. The above-mentioned problem is solved in the following manner: 2, and the above-mentioned stamping forming of any of the eighth embodiment 139984. Doc 200948576 f The above-mentioned problem is solved by the above-mentioned upper cylinder being a gas-filled body in which a gas of a special (four) force is filled. According to a fifth aspect of the invention, in the ink forming apparatus of the fourth or ninth aspect, the lower cylinder is a gas red body in which a gas of a specific dust force is filled. According to a twelfth aspect of the present invention, the above-described press forming apparatus according to any one of the first to eleventh aspect, wherein the centering member is inserted before the punching Between the upper mold and the lower mold, the center of the position of the glass material placed on the lower side is aligned with the center of the lower mold from both sides, and the centering member presses the glass material After the optical element is formed, the mold is lowered, and the peripheral portion of the optical element is pressed downward. According to a thirteenth aspect of the present invention, the above-described press forming apparatus according to any one of the above-described first to twelfth embodiments includes: an adsorption hand attached to the inside of the casing Moving, the glass material is placed on the molding surface of the lower mold in the mold, and the punched optical element is taken out from the mold; and a hand holding mechanism that holds the adsorption hand in a horizontal state And a driving unit that drives the suction hand via the hand holding mechanism; the hand holding mechanism holds the suction hand by a plurality of elastic rubber members. According to a fourteenth aspect of the present invention, the above-described press forming apparatus according to any one of the above-described first to twelfth embodiments includes: an adsorption hand attached to the inside of the casing Moving, the glass material is placed on the forming surface of the lower mold in the cavity mold, and from 139984. Doc -12· 200948576 The punched optical element is taken out from the mold; the hand holding mechanism 'holds the suction hand in a horizontal state; and the driving portion drives the suction hand via the hand holding mechanism; the hand The holding mechanism is guided in the up and down direction by a linear guide. - [Effects of invention].  According to the present invention, in the process of moving the die upward by the pressure generating mechanism, the manganese is adjusted by the upper swinging member to press the upper die against the upper die and is pressed upward by the lower die pressure imparting mechanism. Since the mold is pressed, the pressure acting on the upper cylinder can be more reduced, the upper cylinder can be further miniaturized, and the cooling mechanism for water cooling is not required, as compared with the case where a plurality of coil springs are just superposed. It is not necessary to take measures to prevent corrosion of the mold when there is a shallow leak of cooling water. Further, by adjusting the pressure of the upper cylinder, it is possible to easily cope with the change in the left-hand force applied to the ', and the pressure can be more easily changed than the previous operation of changing the number of the coil springs. ❹ * The cut-and-form optical device has a lever mechanism that swings the force of the upper mold by swinging around the fulcrum.  The member is transferred to the rainbow body. Therefore, when the plurality of guide holes have the same mode, the sliding of the glass material is performed, and all the upper molds are completely pressed to the limit. And even if there is a difference in temperature between the molds, or the subtle temperature difference between the molds during pressurization, etc., the speed at which the press is started, the speed at which the forming or forming (the deformation speed of the glass) is different between the modes It is also possible to easily adjust the difference, and it is possible to take many effects such as good precision of the mouth of the formation and improvement of productivity. 139984. Doc -13- 200948576 According to the optical element of the present invention, since it has an anger mechanism, when a plurality of upper and lower dies are simultaneously formed by stamping, the force exerted on the dies is Each of the upper molds is supported at its position, and can act toward the center of the movement axis of the mold during the upward pressing operation of the mold, and can efficiently manufacture the optical functional surface relative to the wire from the non-existence to the damage. An optical component with high precision at the correct position. [Embodiment] Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings. Fig. 1 is a view showing the overall configuration of a press forming apparatus according to an embodiment. Fig. 1 is a view showing a vacuum chamber (frame) 2G for forming an optical element, and a pair of The vacuum chamber 2G supplies the glass material and takes out the storage chamber % of the formed optical element. The vacuum chamber 2G includes: a molding die unit 4 (); an in-furnace hand mechanism 50 for moving the glass material and taking out the formed optical element; and setting the glass material to be transferred to the molding die unit 40. And a centering/scraping mechanism 6 that separates the optical element from the upper mold; and a heater unit 70 that heats the glass material before forming. The vacuum chamber 20 is supported by a vacuum chamber gantry 22 on which a pressure generating mechanism 8 for squeezing the mold 42 and the lower mold 44 of the mold unit 4 for squeezing the upper side is provided.调; a aligning mechanism 90 for aligning the axis of the upper die; and distributing the pressure of the upper die 46 to the upper die force distribution mechanism (upper die pressurizing mechanism) 1 〇〇 during forming. The pressure generating mechanism 80 includes a boosting cylinder 81 which is fixed to the vacuum chamber 139984. Doc 200948576 Supported by the support base 82 on the lower surface of the chamber 20. The lift drive shaft 84 that is lifted and lowered by the pressure of the booster cylinder 81 is coupled to the lift base 43 of the support die 42 via the support member 85, and the lower die pressure applying mechanism 370 is mounted on the lift base 43. . * Further, the health chamber 30 includes: a pallet 110 on which glass material is placed;  A scalar robot 120 attached to the glass material on the pallet 110; used to carry in. a displacement chamber 13 that carries out the glass material and the optical element; a shifter moving mechanism 150 that moves the shifter 140 of the replacement chamber _130; and a communication path 32 between the communication replacement chamber 130 and the vacuum chamber 20 Open and close gate valve 160. Further, a vacuum pump unit 170 is provided at a lower portion of the storage compartment frame 32 supporting the storage chamber 3, and a filter unit 18A for supplying clean air to the storage chamber 30 is provided on the upper surface of the storage chamber 30. Further, in the vacuum chamber 20, an air pipe 190 for supplying high-pressure air, a nitrogen pipe 2 for supplying nitrogen gas, a nitrogen pipe 210 for cooling, and a vacuum pipe 22 for performing vacuum suction are provided. An air pipe 190 and a vacuum pipe 220 for supplying high-pressure air are connected to the φ material to 30. .  Further, on the air pipe 190, solenoid valves V21 to V25 for controlling the supply of high-pressure air are disposed. Further, a solenoid valve V14 for controlling the supply of nitrogen gas is disposed in the nitrogen gas pipe 200, and solenoid valves V丨9 and V2〇 for controlling the supply of nitrogen gas for cooling are disposed on the nitrogen gas pipe 21 for cooling. Further, solenoid valves V1 to V9, V11 to V16, and V18' V26 are disposed on the vacuum piping 22'. Furthermore, the solenoid valve VU) is disposed on the pipeline (3) between the vacuum chamber 20 and the displacement chamber 13G, and the vacuum is opened by opening the valve 139984. Doc -15· 200948576 The pressure of the chamber 20 is equalized with the pressure of the displacement chamber 13〇. Further, an electromagnetic valve V17 'V27 for exhausting is connected to the side wall and the bottom of the vacuum chamber 20. Each of the solenoid valves V1 to V27 includes, for example, a normally closed type 2埠2-position valve that is opened by a solenoid and is closed by a demagnetization of a solenoid. Further, below the vacuum chamber 20, a lifting unit 25 that lifts the glass material loaded into the vacuum chamber 2 is disposed; and vacuum suction is performed on the suction hand 52 of the hand mechanism 5 of the furnace. The adsorption control unit 260. The press forming apparatus 10 is configured by loading a glass material (glass blank) into a molding die unit 4, and pressing the die 42 by a pressure generating mechanism 8 to perform press forming. Further, the press forming is preferably carried out by filling an inert gas such as a nitrogen gas into the inside of the vacuum chamber 2 of the airtight structure in an inert gas atmosphere. Fig. 2 is a block diagram showing the configuration of a control system of the press forming apparatus 1A. As shown in Fig. 2, the control device 300 of the press forming apparatus 1 controls the following parts: the above-mentioned furnace hand mechanism 50, centering. The scraper mechanism 60, the heater unit 70, the pressure generating mechanism 8〇, the upper die pressure distribution mechanism 1〇0軚 type manipulator 120, the vacuum pump unit 170, the electromagnetic chamber V21 to V25 for high-pressure air, and the solenoid valve V1 for vacuum ~V16, v26, and solenoid valves V17 and V27 for exhaust. Further, in addition to the above, the control device 300 performs a rain pressure air supply unit 3 10, a gate valve opening and closing mechanism 320, a replacement chamber, a pressure adjustment unit 330, a chamber pressure adjustment unit 34, a nitrogen gas supply, and a nitrogen gas cooling unit 36. The 〇 and the lower mold pressure imparting mechanism 370. 139984. Doc 200948576 The high-pressure air supply unit 3 10 contains an air compressor that supplies high-pressure air to the air piping 190. The gate valve opening and closing mechanism 32 includes a cylinder block 322 which is driven in such a manner that when the high pressure air is supplied by the opening of the solenoid valve V21, the gate valve 160 is moved upward to open the communication passage of the replacement chamber 13A.  132 ° .  Further, the replacement chamber pressure adjusting unit 330 is operated by introducing the vacuum generated by the vacuum pump unit 17A into the replacement chamber 130 by opening the solenoid valve V9, and does not allow air to enter when the glass material is carried in. Within the chamber 20. The nitrogen gas supply unit 350 supplies the nitrogen gas into the chamber 2 by opening the valve of the electromagnetic valve V14 when the glass material is press-formed. In the nitrogen cooling unit 360, when the glass material is press-formed, the low-temperature nitrogen gas for cooling the upper mold and the lower mold of the molding die unit 供给 is supplied by opening the solenoid valves V19 and V20. The lower die pressure applying mechanism 370 includes a lower die pressurizing adjustment mechanism that applies the pressure generated by the Φ pressure generating mechanism 80 to move the die 42 upward to perform press forming, and applies the lower die 44 upward. Pressure. Lower Molding Force The force applying mechanism 370, as described below, includes a lower lever mechanism and a red body including a lower portion of the gas body, which controls the line pressure to generate a pressurization corresponding to the pressure acting on the lower mold 44. Figs. 3A and 3B are views showing the sequence of steps performed in the press forming apparatus 1A. Here, a method of manufacturing an optical element will be described with reference to Figs. 3A and 3B. Furthermore, in the last final step, the horizontal moving stage 152 of the shifter moving mechanism 150 moves to open the replacement chamber 13〇, and 139984. Doc -17- 200948576 and the shifter 140 is moved from the vacuum chamber 20 to the displacement chamber 130 by the cylinder block 154 of the shifter moving mechanism 150. In the sequence 1 shown in Fig. 3A, the replacement chamber 130 is closed by the shifter moving mechanism 150. Next, the vacuum pump unit 170 is activated, and the solenoid valve V9 is opened to open the vacuum chamber 20 via the replacement chamber 13 . In the sequence 2, the solenoid valve V14 is opened to supply the nitrogen gas into the vacuum chamber 20 which has been vacuumed. "The gate valve 160 is closed to separate the displacement chamber 130 from the vacuum chamber 20. In the sequence 3, the pallet 112 on which a plurality of glass materials are placed is carried into the pallet 110 in the storage chamber 30. Further, the loading of the pallet can be performed simultaneously with the above sequence 2. In the sequence 4, the scalar type robot 1 2 in the stock chamber 30 is driven to move the vacuum chuck 122 onto the pallet 2 and the solenoid valve 11 is opened to adsorb the glass material on the pallet 112. In the sequence 5, the replacement chamber 130 is opened, and the arm 124 of the scalar robot ι 2 旋转 is rotated to move the vacuum chuck 122 above the shifter 140 housed in the replacement chamber 13A. Then, the solenoid valve vu is closed to release the suction of the vacuum chuck 122, and the glass material is placed at a specific position on the shifter 140 (in the present embodiment, four locations). In the sequence 6, the replacement chamber 130 is sealed, and the solenoid valve V9 is opened to open the chamber 130 to a vacuum. Next, the solenoid valve v1 is opened to introduce the nitrogen gas in the vacuum chamber 20 into the replacement chamber 130, the replacement chamber 13 is replaced with nitrogen gas, and the pressure of the vacuum chamber 20 and the pressure of the replacement chamber 13 are replaced. Pressure equalization 0 139984. Doc •18· 200948576 In sequence 7, the solenoid valve V21 is opened and the gate valve 160 is opened by the supply of air pressure. Next, the horizontal moving stage 152 and the cylinder block 154 of the shifter moving mechanism 15 are actuated to move the shifter 140 horizontally to the inside of the vacuum chamber 20. • In the sequence 8 'drives the hand mechanism 50 to move the suction hand 52 to the shift.  Above the bit 140. The adsorption hand 52 is provided with four adsorption pads, and the glass materials of the shifters ι4 are simultaneously adsorbed by the valves of the electromagnetic valves VI to V4. © At this time, the lift unit 25 is driven by the opening of the solenoid valve V25, and the shifter 140 is raised to bring the glass material on the shifter 140 close to the suction hand 52. In the sequence 9, the die 42 is moved upward by the pressure generating mechanism 81 of the pressure generating mechanism 8 to adjust the height position of the side opening of the die 42 to an optimum position for inserting the suction hand 52. Further, after the adsorption hand 52 is inserted into the inside of the mold 42, the height of the mold 42 is adjusted so as to be suitable for placing the respective glass materials adsorbed on the lower surface side of the adsorption hand 52 at the upper end of each lower mold. φ is in the sequence 10, and the solenoid valves VI to V4 are closed, and the suction hand 52 of the hand mechanism 50 inserted into the inside of the mold 42 is released from the suction of the four glass materials. Thereby, the respective glass materials carried by the adsorption hand 52 are placed on the lower mold 44 in the die 42. At this time, the upper mold 46 and the lower mold 44 are, for example, previously heated to a glass viscosity of 1016 dPa. The temperature around s. In the sequence 11, the suction hand 52 of the hand mechanism 50 of the furnace is returned to the side of the shifter 140. In the sequence 12, the solenoid valves V1 5, V16, and V26 are opened, and the centering and scraper mechanism 60 is inserted from the side to the mold 42 of the forming die unit 4 139 139984. Doc -19- 200948576, and the center of the placement position of each glass material placed on the lower mold 44 is aligned with the center (on the axis) of the lower mold 44. In order 13, make the centering. The doctor blade mechanism 6 is detached from the molding die unit 4'. In the sequence 14, the solenoid valve V18 is opened, and the heater unit 70 whose heating temperature has been set to 900 C is inserted from the side into the mold 42 of the forming mold unit 4, and is placed on the lower mold 44. The glass material is heated. Further, the die 42 is heated by other heating means, and the lower die 44 and the upper die 46 are indirectly heated by heat conduction from the die 42. In the sequence 15, the viscosity of the glass material after heating by the heater unit 7 is, for example, ΙΟ7 dPa. In the case of s, the heating of the heater unit 7 is stopped, and the heater unit 70 is detached from the mold of the molding die unit 4〇. In the sequence 16, the pressure generating mechanism 8's boosting cylinder is "activated to raise the die 42 and the lower die 44 of the forming die unit 40. Thereby, the glass material is between the upper die 46 and the lower die 44. Pressed. The upper die 46 is supported by the spherical bearing of the aligning mechanism 9 with respect to the axis of the up-and-down direction. In the sequence 17, in the above-mentioned punching step, # is angered by the spherical bearing of the (4) mechanism 90 The axis of the upper mold 46 is made coincident with the axis of the lower mold 44. In the sequence 18, the glass material is stamped at a specific time between the lower mold 44 and the upper mold material to form an optical element (aspherical lens). In the order 19, the pressing force is transmitted to the upper cylinder block 1 () 4 via the upper lever mechanism H) 2 of the upper die pressure distributing mechanism (10), so that a compressive load acts on the cylinder block ι 4 'Using the upper gas rainbow body The air pressure in 1〇4 rises to buffer the pressure of the upper mold 46. Again, the switching of the three-way valve V30 is used, according to 139984. Doc -20· 200948576 The air in the upper cylinder block 1〇4 is controlled by the increase or decrease of the punching force of the upper mold 46. [In addition, the punching force of the cylinder block 81 is controlled to be fixed upward by the upward pressing of the die 42. In the sequence 20 shown in Fig. 3B, the solenoid valves V19, v2 are opened, and the valve is closed.  The lower mold 44 and the upper mold 96 supply cooling nitrogen gas, thereby cooling the formed optical element with the lower mold 44 and the upper mold 46. In the sequence 21, the glass material shrinks due to cooling, so that the pressure applied to the glass φ material disappears, so that the lower mold pressure is applied to the lower cylinder 610 (see FIG. 1A) to lower the lower mold 44. . Thereby, the shape of the optical element can be stabilized. In sequence 22, the solenoid valves V15, V16, and V26 are opened and the center is set. The blade mechanism 60 is inserted into the mold 42 of the forming die unit 4 from the side. At this time, the insertion height position of the centering/scraping mechanism 6 is set to be above the peripheral portion of the optical element. In the sequence 23, after the temperature of the lower mold 44 and the upper mold 46 is lowered to a specific temperature, the lower cylinder pressure 61 〇 (refer to FIG. 1A) is actuated to lower the molding die unit 40. The die 44 is lowered. • In the sequence 24, the boosting cylinder 81 of the pressure generating mechanism 80 is actuated to lower the 胴 die 42 and the centering/scraper mechanism 60. Thereby, the lower mold 44 is separated from the upper mold 46, and the optical member (molded article) attached to the upper mold 46 is centered by the center. The blade mechanism 60 is separated from the upper die 46 and placed on the lower die 44. In the sequence 25, the centering/scraping mechanism 6 is released from the molding die unit 40. In the sequence 26, the suction hand 52 of the hand mechanism 5 of the furnace is inserted into the forming 139984. Doc -21· 200948576 In the die 42 of the die unit 40, the die 42 is moved up and down by the boosting cylinder 81 of the pressure generating mechanism 8 to adjust the height position of the lower die 44 to fit and attach 5 2 Adsorption of the optimum position of the stamped optical component. Then, the solenoid valves VI to V4 are opened, and the four optical elements that have been press-formed are attracted to the respective adsorption pads 53 of the adsorption hand 52. Then, the suction hand 52 is moved toward the shifter 140 side. The lift unit 25 is driven by the opening of the solenoid valve 25 so that the upper surface of the shifter 140 is close to the optical element adsorbed by the adsorbent 52. In the sequence 27, the solenoid valves V1 to V4 are closed to release the adsorption of the four optical elements. Thereby, the optical elements transferred by the adsorption hand 52 are placed on the shifter 140. In the sequence 28, the shifter 140 is slid and returned to the replacement chamber 丨3 利用 by the cylinder block 154 of the shifter moving mechanism 15 ,, so that the gate valve i 6 〇 is closed. The replacement chamber 130 and the vacuum chamber are replaced. The communication path 132 between the chambers 2 is blocked. In the sequence 29, the replacement chamber 13 is opened to introduce air into the replacement chamber 13A. In sequence 30, the scalar robot 12 is driven to move the vacuum chuck 122 above the shifter 140 of the replacement chamber 130, the solenoid valve vi 1 is opened, and the vacuum disc 122 is used to adsorb the shifter 140. Four optical components (molded products). In the sequence 31, 'the scalar type robot 12 is driven to move the vacuum chuck 122 above the tray 112', the solenoid valve vi 1 is closed to release the adsorption of the optical elements' and the optical elements are placed The pallet is on the raft 2. At this point, rushed 139,984. Doc •22· 200948576 The manufacturing steps of the press forming of the optical element by the press forming apparatus 10 are completed. In the press forming apparatus 10, the above-described order 1 to 31 is repeated, and the optical element can be efficiently produced. Next, a press forming apparatus for forming an optical element by press forming as described above.  The composition of each part of 10 is explained. [Configuration of the molding die unit 40] Fig. 4 is a longitudinal cross-sectional view showing the configuration of the molding die unit 4, the alignment mechanism 9A, and the upper die pressure φ. As shown in Fig. 4, the molding die unit 40 is configured to guide the lower die 44 and the upper die 46 by the die 42. The lower portion 42 of the die 42 has four lower guide holes 42a through which four lower molds 44 can be inserted. The crucible has four upper guide holes 42b through which four upper molds 46 can be inserted. Further, a molding space 42c into which the upper end (lower forming 4) 44a of the lower mold 44 and the lower end (upper forming portion) 46a of the upper cymbal 46 are inserted is provided in the central portion of the cymbal mold 42. The forming space 42c communicates with the opening 42d opened on the left and right side faces of the die 42, and the suction hand or the φ heater unit 70 of the furnace hand mechanism 5 is inserted from the opening 42d on the left side, and the opening 42d is inserted from the right side. Center and doctor mechanism 60 ° • As shown in Fig. 5, the lower guide hole and the upper guide hole 42b of the die 42 are arranged in parallel in the X and γ directions, and are arranged in any direction. Symmetrical to the axis. Thereby, the heat generated by each of the four lower molds 44 and the upper mold 46 at the time of punching/on is uniformly conducted, so that the difference in the modes caused by the temperature is suppressed. Further, on the upper surface of the upper surface of the crucible 42, a cooling tank 48 for allowing the nitrogen gas for cooling to pass therethrough is provided. When punching into a lot, the cooling tank 48 is provided for 139,984. Doc •23· 200948576 The nitrogen gas is cooled, thereby cooling the die 42. Returning to Fig. 4, the description will be made. The lower die r chess 44 is formed by processing a round bar including a super-hard alloy, and a forming concave portion 1 for punching the optical element is formed on the upper end 44% 4a, and the forming concave portion is placed thereon. The above glass material (for example, a glass ball). Further, the shape of the concave portion for forming is processed into a shape of (4) shape (4) money R (_nd, circular) of the aspherical lens to be formed. Further, in the lower mold 44, a large-diameter portion 44b which protrudes in the radial direction at a lower portion thereof is disposed above the die base platen 437 disposed below the die 42, and a heat insulating material 438 and a bottom plate 439 are laminated on the bottom plate 439. , the mold 42 is fastened. Further, on the bottom plate 439, a groove for escaping the nitrogen gas when the cooling nitrogen gas flows is provided (obscured in Fig. 4). A notch portion 42h is formed in the bottom portion 42g of the die 42, and a spacer member 4b is disposed in each of the notch portions 42h. Each of the lower molds 44 is placed on each of the spacer members 4''. Each of the spacer members 400 adjusts the dimensional accuracy of the lower molds 44 in the axial direction. In other words, the spacer member 4A abuts against the lower surface ′ of the large-diameter portion 44b of each of the lower molds 44, and is configured such that the heights of the molding surfaces of the lower molds 44 match each other. Four through holes 603a are formed in the bottom plate 20a of the vacuum chamber 20, and the lower die pressing rods 602 are inserted into the respective through holes 603a. Each of the lower mold pressurizing rods 602 is pressed upward by the lower mold pressure applying mechanism 370 (see Fig. 10) disposed on the lower surface side of the bottom plate 20a of the vacuum chamber 20 at the time of press forming. On the other hand, the die base plate 437, the heat insulating material 438, and the bottom plate 139984. Doc - 24 - 200948576 439 is provided with a passage for supplying cooling nitrogen gas to the cooling tank 48. The passage 49 is connected to a nitrogen gas supply pipe 435' for supplying a cooled nitrogen gas to the nitrogen supply pipe 435. There is a solenoid valve vi 9. Further, the upper surface of the die 42 of the upper mold 46 is also provided with a cooling tank 48. The cooling tank 48 is supplied with a nitrogen gas for cooling from the nitrogen gas supply pipe 436. It is equipped with a solenoid valve V20. Therefore, the dies 42 are cooled by supplying the cooling gas for cooling to the cooling grooves 4 形成 formed on the upper and lower surfaces thereof. ® [Configuration of the aligning mechanism 9G] Next, the configuration of the aligning mechanism 90 of the upper mold 46 will be described with reference to Fig. 6 . As shown in Fig. 6, the aligning mechanism 9A includes a spherical bearing 92 that rotatably supports the upper end of the upper mold 46, and a bearing holding member 94 that holds the outer periphery of the spherical bearing 92. The peripheral portion 94a of the bearing holding member 94 is placed on the hanging member 312 suspended from the top plate 20b of the vacuum chamber. The φ upper mold 46 is formed by processing a round bar containing a super-hard alloy, and a concave portion for forming or a shape convex portion for pressing the optical element is formed on the lower end 46a. Further, the shape of the concave portion for molding and the convex portion for molding is processed into a curved shape corresponding to the surface shape of the aspherical lens to be formed. Further, in the upper mold 46, a large diameter portion 46b is protruded in the radial direction near the upper end thereof, and a lower portion 46c extending downward from the large diameter portion 46b is inserted into the upper guide hole 42b_ of the die. Further, the upper mold 46 has an upper portion 46d extending above the large diameter portion 4, and the upper portion 46d is inserted into the spherical bearing 92 to be maintained as J39984. Doc •25· 200948576 Swing freely in either direction. Further, on the outer circumference of the upper portion 46d of the upper mold 46, a stopper ring 47 for preventing the self-spherical bearing 92 from coming off is locked. Further, a pressure transmitting member 49 having a rivet shape having a larger outer diameter than the upper portion is inserted into the shaft hole 4 which is opened at the upper end of the upper portion of the upper mold. The friction transmitting member 49 is formed of a super-hard alloy which is subjected to the load on the upper mold and is periodically replaced before deformation or wear. The spherical bearing 92 includes: fitted into the upper part of the upper mold _ in the outer circumference A spherical body (inner wheel) 95; and a spherical body supporting portion (outer wheel) 96 having a spherical recess that slides the outer periphery of the spherical body 95. The spherical body 95 is slidably connected to the spherical concave portion of the spherical body supporting portion 96 without a gap, and the sliding resistance is reduced. Therefore, for example, when the axis of the upper jaw 46 deviates from the upper guide hole of the die 42, if the lower force acts on the upper die 46 outside the radial direction, the ball 95 will rotate in a direction in which the load is smaller. The core can be adjusted in such a manner that the sleeve of the upper mold 46 and the upper portion of the mold 42 are in the same manner as in the upper part of the mold 42. In the figure, the upper left side is old; the tilt is 0 with respect to the sleeve line. The shape I in the angle adjustment operation, and the upper mold 46 on the right side indicate the state in which the anger is over. The spheres of the same curvature of the spherical body 95 and the spherical recess of the spherical support portion 96 are slidably coupled to each other. Therefore, the spherical body 95 can be rotated in any direction. Fig. 7 is a view showing a toilet mold p a l 々 々. As shown in Fig. 7, the upper mold 46 is a longitudinal section 49 of the forming state. When the mold 42 is raised, the center of the head of the force transmitting member 49 is burned to the pressing force. I39984. Doc -26 - 200948576 The hanging member 3 12 is a member for suspending the bearing holding member 94 in the vacuum chamber 2', and the lower end hook portion 312a is engaged with the outer periphery of the bearing holding member 94 to protrude into a flange The peripheral portion 94a of the shape has an upper end hook portion 13bb that is engageable with the support member 303 of the top plate 20b of the vacuum chamber 2A.  Composition. Furthermore, the support member 303 is omitted in FIG. • At the time of press forming, the die 42 is moved upward by the pressing force of the boosting cylinder 81 of the pressure generating mechanism 80, so that the upper end 44a φ of the lower die 44 abuts against the lower end 46a of the upper die 46, The glass material is pressurized by slightly raising the upper mold 46 upward (for example, several mm). At this time, the bearing holding member 4 also moves upward, so that the peripheral edge portion 9 of the bearing holding member is separated from the upper end hook °P 312a. Thereby, the state in which the restraint of the spherical bearing 92 is released is changed, thereby becoming the sphere 95 and The aligning operation of the ball supporting portion 96 is not hindered by the free-moving state. The pressure of the squeezing upper die 46 is interposed between the upper surface 42f of the dies 42 and the large-diameter portion 46b of the upper die 46. The piece 91 is received, so that the pressure Φ is transmitted to the upper die pressing rod 302, and the upper die pressing rod 302 abuts against the head of the pressure transmitting member 49 screwed into the upper end of the upper die 46. Therefore, it becomes a spherical surface. The bearing 92 has no punching force. In this state, when the axis of the upper die 46 is deviated from the upper guide hole 42b of the die 42, the rotation of the spherical bearing 92 can be performed. In the case of the bearing holding member 94, when the die % is moved up and down, the upper die 46 is freely moved by the aligning of the spherical bearing 92, so that the movement of the die 42 can be performed. The tilt relative to the draw line is automatically corrected. Thereby, when the die 42 is moved up and down, the upper die can be prevented from being relative to I39984. Doc -27- 200948576 is tilted on the axis of the die 42 to prevent "scratch" when the die 42 slides. Moreover, the mold 42 is lowered while the upper mold 46 is held by the hanging member 312, and after the molded product is taken out, the glass material g is again placed on each lower mold 44 and pressure-molded again. In this case, the cymbal cymbal is raised while the upper mold 46 is held by the hanging member 312. Thereby, the die 42 is guided by the guide hole 46 to be guided by the guide hole, and is slidably connected thereto, and is raised by the bearing holding member 94 and the spherical bearing 92. At this time, the upper mold 46 is fixed at substantially its position without acting. At this time, it is necessary to slide the die 42 without causing "scratch" in the four upper molds 46 and the mold 42, and the above-described action by the spherical bearing 92 makes it possible. In a state where the mold 42 has been lowered, the upper mold 46 is maintained in an orthogonal state with respect to the horizontal plane of the axis by the bearing holding member material and the spherical bearing 92. When the mold 42 is raised from this state, the upper mold 46, the suction holding member 94, and the spherical bearing 92 are held at substantially their positions by their own weight, and the orthogonal state is maintained when the mold 42 is raised. It can prevent "scratch". Thus, in order to apply a pressing force parallel to the sliding surface of the die 42 at least at the center of the upper die 46, and a lowering force acts on the center of the upper die 46, it is formed to be suspended by the hanging member 312. Since the bearing holding member 94 of the hanging support is configured to be interlocked by the spherical bearing of the aligning mechanism 9 ,, when the glass material G is repeatedly formed and the molded optical element molded article is released, the pair can be made The force of the upper and lower members of the die applied by the upper die 46 always acts to penetrate the center of the upper die 46, so that 139984 can be efficiently produced. Doc -28- 200948576 • High-precision optical components with the optical functional surface in the correct position relative to the optical axis. [Configuration of Upper Die Pressure Distribution Mechanism (Upper Die Pressure Adjustment Mechanism) 100] Next, the configuration of the upper mold pressure distribution mechanism 1A will be described with reference to Fig. 4'. The upper die pressure distribution mechanism i 00 is a pressurizing adjustment mechanism provided on the upper surface of the top plate 2〇b of the vacuum chamber 2〇, which is composed of four upper levers respectively corresponding to the upper molds 46. The mechanism 1〇2 and the 4 upper cylinders 1()4 are formed. Furthermore, in Fig. 4, two of the above members are displayed. The upper lever mechanism 102 is fastened to the upper fulcrum member 105 on the top plate 20b of the vacuum chamber 2 by bolts or the like, and is coupled to the upper swinging member 1 at the upper end of the upper fulcrum member 105 via the joint pin 1〇5& 6 components. The upper fulcrum member 105 is slidably fastened with respect to the mounting member 108 on the upper surface of the top plate 2〇b. Therefore, the insertion position of the coupling pin 5a with respect to the plurality of holes 106a provided in the upper swinging member 106 can be changed, and the fastening position of the upper fulcrum member 105 with respect to the mounting member 108 can be adjusted. The pressure of the upper lever mechanism 102. The upper end of the upper die pressing rod 312 extends in the up-and-down direction so as to penetrate the top plate 20b of the vacuum chamber 20, and is coupled to one end of the upper swinging member 106 via the joint pin 1 〇9. Further, the other end of the upper swinging member 106 is coupled to the piston rod 1 〇 4a of the upper cylinder block 1 to 4 via a joint pin 107. Therefore, when the upper mold 46 is pressed upward as in the above press forming, the pressure due to the upward movement thereof is transmitted to the upper swinging member 106 via the upper mold pressing rod 302, so that the upper swinging member 1〇6 The upper fulcrum member 105 is a piston rod i 〇 4a that drives the upper cylinder 104 in the compression direction by swinging the core. 139984. Doc -29- 200948576 The upper cylinder block 104 contains a cylinder block filled with high waste air inside the cylinder block. Therefore, if a compressive load is applied to the piston rod 1 〇 4a, the piston rod 104a slides downward, and the air is compressed to increase the pressure of pressing the piston rod 104a upward. This pressure is increased in accordance with the ratio of the respective distances of the joint pins 1 〇 7 , 1 〇 5 a , and 109 determined by the joint positions of the upper swinging member 1 〇 6 and the upper fulcrum member 1 〇 5 . Therefore, the pressure generated by the upper cylinder 104 is increased by the upper lever mechanism i 〇 2 and transmitted to the upper die 46 via the upper die pressing lever 3 〇 2 . Thereby, the upper die 46 is subjected to the pressure which is pressed upward by the lower die 44, and is pressed downward by the pressure generated by the upper cylinder 104, so that the pressure is balanced in both directions. Stable state. Therefore, the glass material which has been press-formed between the lower mold 44 and the upper mold 46 is pressed against the surface of the lower end 44a of the lower mold and the lower end 46a of the upper mold 46 without a gap, thereby being formed into a shape An aspherical lens corresponding to the shape of the space formed between the upper end 44a and the lower end 46a. In this case, it is preferable to constitute the squeezing pressure of the pressure generating mechanism 8 (for example, the total load is 19. 6 kN) has an equal effect on each upper mold 46. If the load of 9 kN is uneven for the distributed load of each upper mold 46, it will be the quality of 4 molded articles (optical components) (for example, unevenness of lens thickness caused by extrusion, or shape and precision) Uneven) causes an impact. Further, of course, there are also unevenness in the dimensions of the lower mold 44, the upper mold 46, the upper mold pressurizing rod 3, and the like in each of the four groups, and therefore, the respective molds are pressed by the pressing force of the pressure generating mechanism 8 The strokes that are pushed to the limit will make a difference. In order to heat and press the glass material to form a high precision optical element 139984. Doc 200948576 pieces, must make higher pressure (3. 92~5·88 kN) acts on each upper die. Further, in the apparatus for repeatedly heating the glass material to a specific temperature (400 to 800 ° C) and taking out the molded article (optical element) after press molding, the forming is repeated. Product, mold component, model.  After heating and cooling, it is required to shorten the cycle of heating-cooling-heating.  ^ It is necessary to reduce the heat capacity of the entire mold device, and it is necessary to reduce the size of the device. In the apparatus of the embodiment, in order to obtain the same molded article by using four mold members, for example, to obtain a lens of the same thickness, the upper die pressing rod 302 and the rising die 42 shown in FIG. The upper mold 42 is pressed, and the upper surface 42f of the mold 42 is pressed to the lower end surface of the large diameter portion 46b of the upper mold by the spacer 91 to restrict the moving position of the mold 42 to define the thickness of the molded product. size. In other words, the upper surface 42f of the dies 42 is brought into contact with all of the four upper dies 46 via the spacers 91, which is a necessary Φ condition for obtaining the thickness dimensions of the four molded articles. Therefore, it is necessary to cause the pressing force to independently act on each of the four upper dies 46, and the upper surface 42f of the dies 42 completely touches the upper dies 46, .  Further, a sufficient pressing force acts on the upper mold 46. In the present embodiment, the pressure generated by the upper cylinder block 1〇4 disposed on the top plate 2〇b of the vacuum chamber 20 is increased by the upper lever mechanism 102, and the pressing force of the die 42 is acted upon. In the upper mold 46, the pressing force for the filling of the upper mold 46 can be obtained. Further, in the upper mold pressure distribution mechanism, the vacuum chamber 20 can be miniaturized by disposing the J; cylinder 1 〇 4 on the outer side of the vacuum chamber 2, and the upper lever mechanism 1〇2 is used. Upper cylinder 139984. Doc •31- 200948576 1〇4 itself is miniaturized. In the present embodiment, an example in which the cylinder block is applied to the configuration of the upper cylinder 104 is described. However, the present invention is not limited thereto, and may be a cylinder device filled with a gas other than air, or A pressurizing mechanism (accumulator, etc.) of the hydraulic cylinder is provided. If the pressurizing cylinder 81 of the pressure generating mechanism 80 exerts a pressing force on the die 42, the press forming is started between the die 44 and the upper die 46 while rising from the die 42. The upper die pressing lever 302 is pressed up by the upper die 46 by the pressing operation, and one end of the swinging member 1〇6 of the upper lever mechanism 1〇2 is pressed. Thereby, the upper cylinder block i 〇 4 is compressed. As the stamping progresses, the upper mold 46 is slidably guided to the guide hole 42b of the dies 42 and moved until the spacer 91 placed on the upper surface 42f of the dies 42 abuts against the large diameter portion 46b of the upper mold 46. , has been moving the model 2. Here, in the four mold sets, when the large diameter portion 4 of the upper molds of the three upper molds is still in contact with the spacer 91, it is conceivable that the large diameter portion 46b of the upper mold 46 of the other one is not The state of the abutment spacer 91 is abutted. In this case, the upper cylinder block 1〇4 is compressed by the pressing from the pressure generating mechanism 80 and via the upper die pressing rod 3〇2, whereby the above-mentioned unfed upper die can also be A spacer 91 is pressed. Thereby, all the positions of the four upper molds 46 can be always maintained at a fixed position, thereby ensuring the thickness dimensions of all the molded articles. Next, a specific example of the upper die pressure distribution mechanism 1A will be described. The following configuration will be described: when the upper cylinder block 4 uses a cylinder block having a maximum load of N, the position of the upper portion (8) of the support swing member 1 is set to be (4) and up to 139984 to the upper mold pressurizing rod. . Doc •32· 200948576 The ratio of the distances of the body i〇4 is i: 1〇, and the above components are assembled. As a result, it can constitute 10 times the load of the uppermost cylinder 1〇4 by the principle of the damage bar (this time is 5. 68 kN) pressure adjustment mechanism. The force two-pressure adjustment mechanism is assembled in such a manner as to correspond to each of the upper molds 46, and the pressure adjustment mechanism for four operations is used (the total pressure that can be withstood is 22 7 ). The spring assembly is incorporated in the vacuum chamber 2〇. In comparison with the forming device of the Japanese Patent Publication No. 5〇37, since it is not necessary to assemble a large number of discs Φ*, it is not necessary to perform the coil spring adjustment work, and it is disposed in the vacuum chamber 20 On the outside, it is easy to design because of the space. Further, since it is not necessary to cool the upper cylinder 104 as in the above-described prior art apparatus using a coil spring, it is not necessary to provide a piping for supplying cooling water or the like. That is, in the present embodiment, the cooling mechanism for cooling the upper cylinder is not provided, and it is not necessary to prevent the cooling of the water jacket from being formed by the super-hard alloy. Mold 44 causes a corrupt policy. Further, it is possible to correspond to various punching pressures only by changing the air pressure supplied to the upper cylinder block 104, so that it is not necessary to use the publication No. 37 of the Patent No. 37.  The disc I part is decomposed and adjusted. Change the upper fulcrum structure #1〇5 The position is changed in place of the air supply air pressure of the upper cylinder block 〇4, thereby being compatible with various punching pressures, and the method is easier to adjust than the method of Patent No. 2815037. In this state, the thrust of the boosting cylinder 81 of the pressure generating mechanism 8 (the total applied pressure applied to the four upper molds 46) is set to 〖9 6 kN and the waste between the upper die pressing levers 302 is measured. After the uneven force, the range of unevenness can be confirmed to be limited to % 139984.doc •33· 200948576 N. Then, using a module which has adjusted the height unevenness of the spacer 91 to within mm, the molded product size φ1〇ηιιη, the center thickness of 35 mm, is formed by using a mold raising pressure of 19.6 kN which is one of the forming conditions. When the curvature of the mirror surface is 15 mm or 2 mm for the camera lens, the four molds do not have the same problem of scratching at the same time, but are completely pressed to the limit, and the finished molded product is also The cavity spaces 70 formed by the respective molds are all identical, thereby obtaining a molded article which sufficiently satisfies the allowable value of the thickness precision and the optical surface tilt. [Configuration of Furnace Hand Mechanism 50] Next, a configuration of the furnace hand mechanism 5A will be described with reference to Figs. 8A and 8B. As shown in Figs. 8A and 8B, the front end of the arm 54 of the furnace is provided with a horizontal holding mechanism % for holding the suction hand 52 horizontally. Further, the hand mechanism 50 has a cylinder block 5〇a on the upper surface of the top plate 2〇b of the vacuum chamber 20, and the rotary shaft 5〇b is rotationally driven by the cylinder block 50a. On the lower end of the rotating shaft 50b, an arm 54 is coupled, and the suction hand 52 is rotated together with the arm 54, and four vacuum suction pads μ are disposed on the lower surface side of the adsorption hand 52. The interval between the vacuum suction pads 53 is the same as the interval between the lower molds 44. Further, on the lower surface of the suction hand 52, a pair of positioning holes 51 to which the pair of positioning pins 43 are fitted is provided on the die 42. The pair of positioning holes 51 are fitted with the pair of clamping pins 43 so that the four vacuum suction jaws 53 are positioned opposite to the lower molds 44 in the die 42. The horizontal holding mechanism 56 has a pair of plate members 57 coupled to the side surfaces of the upper base 55a and the intermediate base 55b fixed to the lower end surface of the arm 54, and four bolts 58 coupled to the intermediate base and The lower base 55 is I39984.doc 200948576; and four coil springs 59 are wound around the outer circumference of each bolt 58. The lower base 55c is fixed to the base 523 of the suction hand 52, and is held in a horizontal state by the elastic force of the four coil springs 59. The suction hand 52 is fastened to the upper surface of the base by a lower base 55c which is held in a water level together with the lower base 55c. Further, the horizontal holding mechanism 56 holds the intermediate base 55b horizontally by the pair of plate members 57, and is compressed and deformed by the four coil springs 59 disposed on the lower surface side of the intermediate base 55b. The lower base 55 () is held in the z direction and in such a manner that the winding axis and the cymbal axis are displaceable. Each of the bolts 58 is mounted to penetrate the intermediate base 55b and screwed into the lower base 55c, the head of which is larger than the diameter of the intermediate base 55b so as not to fall off from the intermediate base 55b, and the lower base 55c acts upwardly. When the force is external, the bolt 58 is moved to protrude above the intermediate base 55b and the coil spring 59 is compressed, so that the lower base 55c can be displaced upward. Further, if there is no external force, the lower base 55e is restored to the horizontal state by the elastic force of each of the coil springs 59. Further, when an external force in the oblique direction is applied to the suction hand 52, any of the four bolts 58 - will protrude upward from the intermediate base 55b to absorb the inclination. Further, if there is no external force, the original state is restored by the elastic force of the coil spring 59, and the suction hand 52 is horizontally held. Further, a contact member that restricts the amount of vertical movement is disposed between the suction hand 52 and the positioning pin 43. Further, in order to prevent cracking of the molded article due to thermal shock, the adsorbent crucible 53 is produced from a material having a low thermal conductivity, and is produced by using a material having heat resistance in order to adsorb the high-temperature molded article. For example, 139984.doc -35- 200948576 is a t-imine resin. In addition, the furnace hand mechanism 50 functions to rotate the rotation shaft 50a under the control of the rotation of the cylinder block 5〇b in a state in which the glass material is sucked on the adsorption pad 53 and The upper and lower positioning mechanisms and the rotary shaft 50b of the die 42 are introduced into the die 42 by the positioning mechanism above and below the die, and the molded article is adsorbed by the adsorption force of the adsorption pad 53. In the reverse rotation operation, the molded article 0 is taken out from the die 42. [Adsorption pipe path of the hand mechanism 50 in the furnace] FIG. 9 is a view showing the distribution path of the adsorption control unit 26 connected to each of the adsorption pads 53. Figure. As shown in Fig. 9, each of the suction pipes 53 is connected to each of the suction pipes 501 to 504 of the suction control unit 260, and each of the suction pipes 501 to 504 is connected to the two branch pipes 5?6 and 507. Each of the suction pipes 5 01 to 5 04 is provided with pressure sensors 5丨丨 to 5丨4 and electromagnetic valves V1 to V4 for adsorption, and flow regulating is provided on the branch pipes 506 and 507. Variable flow valves 516, 517. Further, the nitrogen pipes 521 to 524 are provided with variable throttle valves 53 1 to 534 for flow rate adjustment and solenoid valves V5 to V8. Each of the adsorption ports 5 3 is configured to be independently adsorbed or desorbed by the four lower molds 44 by opening the solenoid valves V1 to V4, and the adsorption source is the vacuum pump unit 17A. In the configuration, the suction pipes 501 to 504 which are different from the vacuum pump unit 17 are connected to the respective adsorption pads 53, and are arranged in a ratio of two of the four suction pipes 501 to 504. Variable throttle valves 516, 517 for flow adjustment are used to semi-independently control the respective suction pressures of the four suction ports 139984.doc - 36 - 200948576 tubes 501 - 504. The pressure sensing devices 5 11 to 5 14 ' are respectively provided on the four suction pipes 5 〇 1 to 5 〇 4, so that the holding pressure control can be performed without any problem even if the suction pressure is semi-independent. In order to implement a mechanism for depressurizing nitrogen gas to release the adsorption force, and to independently control the reverse injection force on each line, a variable throttle valve 531 is disposed on each of the four nitrogen pipes 521 to 524, 532, 533, 534. Therefore, in the present embodiment, the adsorption forces of the four adsorption pads 53 can be controlled by the variable throttle valves 516 and 517, and the variable throttle valves are respectively provided on the respective suction pipes 5〇04. In comparison, a smaller number of throttles can be used for control, which is also advantageous in terms of cost. [Configuration of Lower Mold Pressure Supply Mechanism 370] Fig. 10 is a view showing a configuration of a lower mold pressure application mechanism (lower mold pressure adjustment mechanism) 37A. The lower mold pressure applying mechanism 37 shown in Fig. 10 is disposed on the support member 85 that transmits the pressure generated by the boosting cylinder 81 of the pressure generating mechanism 80 to the die 42. The support member 85 is formed in a rectangular shape, and has: a base 85a below the elevation drive shaft 84 to which the booster cylinder 81 is coupled; a support 85b extending upward from both sides of the lower base 85a; and a top end connected to the support 85b Upper base 85c. The lower die pressure applying mechanism 370 is composed of four lower lever mechanisms 6'' and four lower red bodies 6 1 '' mounted on the lower surface of the upper base 85c of the support member 85. Each of the lower lever mechanism 600 and each of the lower cylinders 61 is provided corresponding to each of the lower molds 4 4 . The lower lever mechanism 600 is composed of: a lower die pressing lever 602 which presses each lower 139984.doc -37·200948576 die 44 from below; and a lower fulcrum member fastened to the lower surface of the upper base 85c The lower swing member 606 is swingably supported by the joint pin 604a of the lower fulcrum member 604 and the lower portion. The lower fulcrum member .604 is slidably fastened relative to the mounting member 608 on the lower surface of the upper base 85c. Therefore, by changing the insertion position of the plurality of holes 6064 provided in the lower swing member 606 with respect to the insertion pin 6〇4 & and by changing the fastening position of the lower fulcrum member 604 with respect to the mounting member 6〇8, The pressure of the lower lever mechanism 6〇〇 can be adjusted. The lower cylinder 610 includes a cylinder block 'filled with high pressure air inside the cylinder. If a compressive load is applied to the piston rod 61 〇a, the piston rod 6丨〇a slides downward, and the air is compressed to increase the pressure of pressing the piston rod 610a upward. This pressure is increased in accordance with the ratio of the distance between the coupling pins 6?7, 6?4& and the recess 606b determined by the connection position of the lower swinging member 6?6 and the lower fulcrum member 604. The lower end of the lower die pressing lever 602 is fitted to the recess 606b provided on one end of the lower swinging member 6〇6. Further, the other end of the lower swinging member 6〇6 is coupled to the lower end portion of the piston rod 61〇& of the lower cylinder 61 by the joint pin 607. When the press forming is performed, when the lifting/lowering drive shaft 84 of the pressure generating mechanism 8 is pressed upward, the lower die pressure applying mechanism 37 is coupled to the supporting member 85, the lifting base 43, and the die 42. Squeeze above. The lower die pressure applying mechanism 370 increases the pressure against the lower cylinder 61 by the upward movement of the die 42 to bring the lower die 44 close to the upper die 46. Thereby, the lower cylinder 610 drives the piston rod 6i〇a downward, and the lower mold pressing rod 6〇2 is moved upward via the lower swinging member 606. Then, the lower 139984.doc -38- 200948576 mold pressurizing rod 602 presses the lower mold 44 upward. The pressure generated by the upward movement of the lower mold pressing rod 6〇2 will become the pressing force of the lower mold 44 with respect to the glass material placed between the lower mold 44 and the upper mold 46. The glass material which is press-formed between the lower mold 44 and the upper mold 46 is adhered to the surface of the upper surface 44a of the lower mold 44 and the surface of the lower surface 46a of the upper mold 46 without gaps. The pressure is formed into an aspherical lens corresponding to the shape of the space formed between the upper end 44a and the lower end 46a. ❹ [Centering. Configuration of the knife-to-tool mechanism 60] Fig. 11A is a plan view showing the centering state of the doctor blade mechanism 6 before the operation. Fig. 11B is a side view showing the state of the centering/scraping mechanism 6 before the operation. As shown in FIG. UA and FIG. 11B, the centering-to-tool mechanism 6A includes: two sets of insertion portions 710 having four insertion rods 7·' rod support portions 720 extending in the horizontal direction (γ direction). The support portion 71 is supported and the insertion rods 700 are vibrated in the other direction; the 2-axis drive portion 73 is configured to move the rod support portion 72 in the «Z direction; and the movement table 740 supports the z-axis drive portion 73. The γ-axis direction driving unit 750' moves the moving stage 74 in the γ direction; and the mounting stage (9) supports the γ-axis direction driving unit 75 0 . The mounting table 760 is fastened to the die base platen 437 on which the dies 42 are mounted. Further, the insertion rod 700 of the insertion portion 710 is inserted into the molding space 42c of the moon mold C from the horizontal direction. The insertion rod 700 is configured as a pair of each pair arranged in parallel in the Y direction, and a rod driving mechanism is disposed on the rod supporting portion, and the centering of the insertion rods is in the approach direction of each other. Or the direction of separation into the 139984.doc -39 · 200948576 line to open and close the way to drive. As the rod drive mechanism, a cylinder block driven by air pressure may be used, or a swing actuator driven by air pressure may be used. The pair of insertion rods 7 are vibrated by the light-receiving means by approaching and separating them like scissors, and the glass material placed on the lower mold 44 can be simultaneously pressed from both sides. Further, recessed portions 7a, 7b corresponding to the diameter of the glass material are provided on the side faces of the pair of insertion rods 700 which are close to each other. Further, the interval between the centers of the concave portions 700a and 700b is set to be the same distance as the separation distance between the lower molds 44 in the γ direction. Fig. 12 is a plan view showing the centering state of the doctor blade mechanism 6 in the operation. Fig. 12 is a side view showing the state in which the doctor blade mechanism 6 is in motion. As shown in FIGS. 12A and 12B, the 'centering/scraping mechanism 6' is mounted on the lifting base 43 of the supporting die 42, and the height position of the insertion cup 700 with respect to the die 42 is adjusted by the Z-axis driving portion 730. The insertion rod 7A is inserted into the molding space 42c of the mold 42 by the γ-axis direction driving portion 750. Fig. 13 is a plan view showing the centering operation of the centering blade mechanism 6''. As shown in Fig. 13, after the glass material is placed on the lower mold 44, each of the insertion rods 7A is inserted into the molding space 42c of the mold 42. Then, the recesses 700a, 700b of the respective insertion bars 700 are lowered so as to be positioned on both sides of the glass material G placed on the upper end of the lower die. Further, in this example, the glass material G before the pressing is not spherical, but is formed in advance in an elliptical shape similar to the optical element to be formed, and thus is difficult to rotate. In the inserted state, if the insertion rods 700 are vibrated in the X direction, the recesses 7〇〇a, 7〇〇b of the insertion cups 700 of each of the 139984.doc -40-200948576 will approach each other (closed direction). Repeat multiple moves on the top. For example, as shown in Fig. 14A, the glass material G is placed at a position deviated in the radial direction from the center position (the position indicated by the one-point chain line) of the forming surface (forming recess 4) formed on the upper end 44a of the lower mold 44. (To achieve the table), the description will be given for the centering and operation at this time. As described above, the recessed portions 7〇〇&, 7〇〇1 of the respective insertion rods 7 are reciprocated in the weir direction to press the outer side of the glass material G toward the center side. Thereby, the glass material G is burned to the center of the forming surface (forming recess) formed on the upper end 44a of the lower mold 44 by the pressing of the concave portions 7〇〇a, 7〇〇b of the respective insertion rods 7 of the vibration. mobile. Fig. 14B shows an adjusted state in which the center of the glass material G is aligned with the center of the forming surface (forming recess) by the reciprocating movement of each of the insertion rods 7''. Thereby, the glass material G is separated from the adsorption pad 53 and placed on the upper end 44a of the lower mold 44, and even when placed at a position offset from the axis of the lower mold 44, the recess 700a of each insertion rod 700 can be utilized. , 700b is simultaneously squeezed from both sides to perform centering so that the glass material G is located at the axis of the lower mold 44. [Configuration of the heater unit 70] Fig. 15 A shows the state of the heater unit 70 before the operation. Top view. Fig. 15B is a plan view showing a state in which the heater unit 70 is in operation. As shown in Fig. 15A, the heater unit 70 includes a glass heater 8A and a driving portion 804. The glass heater 800 incorporates a plurality of cassette heaters 8〇2 and is connected to an independent temperature controller to control the heating temperature of the temperature by the thermocouple 803 inserted in the glass heater 800. A plurality of jams 139984.doc • 41 200948576 The heaters 802 are each formed in a cylindrical shape and are arranged side by side in a tendency to extend in the same direction inside the flat heater portion 80 1 . Further, since the glass heater 800 is set to a high temperature (for example, 900 ° C), it is made of a material resistant to high temperatures (for example, SKD (Steel Kogu Dice) 61, SKD 62, HASTELLOY, and more preferably Anviloy, super hard alloy). The drive unit 804 and the heater unit 801 are connected by a joint portion 805. The drive unit 804 includes, for example, a cylinder block, and is inserted into the glass heater 800 from the side opening 42d of the die 42 by the air pressure supplied by the opening of the solenoid valve V18. Further, as shown in FIG. 15B, the plurality of cassette heaters 802 heats the heater portion 801 while being energized and heated, and the heater portion 801 held at a constant temperature (heating temperature) is inserted into the crucible. The molding space 42c of the mold 42. Here, the steps of heating the glass material G and the steps of press forming will be described. As shown in Fig. 16A, the glass material G placed on the upper end 44a of the lower mold 44 is located below the heater portion 801, so that it is heated to a glass viscosity of, for example, 1 by heat radiated from the heater portion 801. 〇7 dPa·s. Next, the heater portion 801 held at 900 °C by the cartridge heater 802 is inserted from the opening 42d of the die 42 between the lower die 44 and the glass material G and below the upper die 46. The distance between the glass heater 800 and the glass material G can be freely set by adjusting the rising position of the mold 42. The upper mold 46 and the lower mold 44 are heated by a cassette heater inserted in the mold 42 to a temperature of 139,984.doc -42 - 200948576, for example, a glass viscosity of about 109 dPa.s. On the other hand, the glass material G is heated by a glass heater 8 to a temperature of, for example, a glass viscosity of about 1 〇 7 dPa,s. After the glass material crucible, the upper mold 46, and the lower mold 44 are heated for a desired period of time (for example, 90 seconds), the cylinder unit mechanism 72 of the heater unit 7 (refer to FIG. 作) is actuated from the mold 42. The glass heater 800 is withdrawn. Thereafter, as shown in Fig. 16B, the die 42 is raised by the pressure of the boosting cylinder 81 of the pressure generating mechanism 80, and press forming is performed. After the large diameter portion 46b of the φ upper mold 45 sufficiently contacts the upper end of the dies 42 via the spacer 91 (for example, after 10 seconds), a cooling medium (for example, nitrogen gas) is supplied to the cooling grooves 48 of the dies 42 to The glass viscosity is, for example, between 1 〇 10·5 dPa·s and about 1 〇 13 dPa·s, and the pressure of the lower cylinder 61 挤压 is pressed upward by the lower lever mechanism 600 to be pressed upward from the lower mold 44 . Punching pressure (for example, total pressure is 3 KN). Under the pressure of the pressure generating mechanism 80, the lower mold 44 moves upward together with the dies 42, and after the φ glass material 冲压 is pressed between the upper end 44a of the lower mold 44 and the lower end 46a of the upper mold 46, the glass material G is formed into A shape corresponding to a specific shape of the forming surface (for example, an elliptical shape). Further, in the upper mold 46, a small diameter portion 46c is formed on the outer circumference of the lower end 46a.

As shown in Fig. 17A, after a specific time for press forming the above-mentioned glass material G, the insertion rod 700 is inserted into the above-mentioned centering. The small diameter portion 46 formed on the lower end of the upper mold 46 of the doctor mechanism 60 ( At this time, the insertion height of the insertion rod 700 is adjusted to the height position of the small diameter portion 46c by the γ-axis direction driving portion 75 (see FIG. 12B). Therefore, the insertion rod 700 is not in contact with the glass material G. Inserted in height, so as to be inserted without damaging the glass material G I39984.doc -43· 200948576. ^ Each insertion cup 700 is driven in the X direction in which each pair of rods are close to each other, so that the recesses 700a, 7〇〇 b is close to the small diameter portion 46c. In this inserted state, each of the insertion rods 7 is non-contact with the peripheral portion of the glass material G (optical element) formed into an elliptical shape. As shown in Fig. 17B, When the mold 42 and the lower mold 44 are lowered and released from the mold, the insertion rod 7 is mounted on the lifting base 43. The insertion rod 7 of the blade mechanism 6 is also lowered. Therefore, the lower surface of the insertion rod 700 is in contact with the formed surface. The outer edge of the optical member G is pressed downward toward the optical The optical element g is press-formed in the above-described heated state, so that the molding surface which is adhered to the upper mold 46 may not fall under the action of its own weight. Therefore, it is placed against the upper mold 46. When the small diameter portion 46c is used to perform the mold release operation on the insertion rod 7 of the centering and scraper mechanism 60, the optical member can be placed in the lower mold by the insertion rod 7 and the lower mold 42. Thereby, when the formed optical element is taken out from the molding space 42c of the dies 42, the furnace hand mechanism 50' is driven to insert the adsorption hand 52 attached to the front end of the arm 54 into the molding space of the cavity mold 42. 42c. Further, after adjusting the height position of the die 42 to a position easy to adsorb according to the height position of the suction hand 52, the solenoid valves V1 to V4 are opened, and the suction pads 53 of the adsorption hand 52 are supplied by the vacuum pump. The vacuum generated by unit 170. Thereby, each of the adsorption pads 53 of the adsorption hand 52 adsorbs the optical element placed on the lower mold 44, and the formed optical element is taken out from the mold 42 by the rotation of the arm 54. Then the 'optical element is moved by the action of the hand mechanism 50 in the furnace. To the shifter 140, at the time of moving to a specific position on the shifter 140, J39984.doc -44 - 200948576 releases the adsorption of the adsorption pad 53 and places the optical element on the shifter. Then the 'optical element is The shifter moving mechanism 150 is driven by the shifter 140 in the replacement chamber 130, and is transferred to the tray η of the storage chamber 3 by the recovery operation of the scalar robot 120. [Modification] Here, a modification will be described. Fig. 18 is a longitudinal sectional view showing a modification of the upper mold pressure distribution mechanism 100. As shown in Fig. 18, when the upper cylinder block 〇4 has a long dimension in the longitudinal direction, the end portion of the body 1 of the upper cylinder block 〇4 is coupled to the other end of the upper rocking member 1 〇6. Further, the piston rod 104a of the upper cylinder block 4 extends downward from the end of the body 1 〇 4b, and is fixed to the top plate 2〇b of the vacuum chamber 2 by the fixing member 101. Therefore, when the upper oscillating member 1 〇 6 is pivoted by the fulcrum member j 〇 5, the main body 10b moves up and down with respect to the piston rod i 〇 4a to impart a load to the upper cylinder 104. Thereby, the pressure generated by the upper cylinder block 〇4 is given to the upper die pressing rod 3〇2 via the upper swinging member 106. Therefore, the upper mold 46 缓冲 cushions the pressing force from below the lower mold 44 under the pressure of the upper cylinder, and applies a pressing force to the lower mold 44. Further, in this modification, the action of the upper mold pressure distribution mechanism 1 is the same as that shown in Fig. 4, and the description thereof will be omitted. Fig. 19A is a side elevational view showing a modification i of the suction hand 52 of the hand mechanism 5 of the furnace. Fig. 19B is a plan view showing a modification 1 of the suction hand 52 of the hand mechanism 50 in the furnace. As shown in FIGS. 19A and 19B, the base portion 52a of the suction hand 52 is always maintained in a horizontal state by the horizontal holding mechanism 900, and the horizontal holding mechanism 900 is disposed on the base portion 52a and fixed to the upper surface of the lower surface of the arm 54. 139984.doc •45- 200948576 Between bases 55a. The horizontal holding mechanism 9 (10) (4) is a so-called position error correcting mechanism, and a mandrel is disposed between the upper mounting portion_ and the lower mounting portion 904, and is disposed at intervals of 12{) degrees in the circumferential direction thereof. The elastic members 920. The lower ends of the three elastic members 920 are respectively mounted in a direction oblique from the central axis 910. Therefore, when the suction hand 52 is subjected to an external force and is inclined around the X-axis or around the Y-axis, either of the three elastic members 92 will be subjected to a compressive load, so that the adsorption hand 52 can be restored to each elastic member "Ο to be equalized The force is applied to the direction in which the adsorption hand 52 is energized, that is, the horizontal state. Fig. 20A is a side view showing a modification 2 of the adsorption hand 52 of the hand mechanism 5 of the furnace. Fig. 20B is a view showing the adsorption of the hand mechanism 5 of the furnace. A plan view of a modified example 2 of the hand 52. As shown in Fig. 20A, the base portion 52a of the suction hand 52 is supported by the linear guide 950. The linear guide 95 is composed of: a guide 952, which The lower surface of the arm 54 extends in the vertical direction; and the slider 954 is formed in a ":?" shape (a shape viewed from above) so as to surround the three faces (front surface and left and right side surfaces) of the guide rail 952. On the guide rail 952, an E-axis driving mechanism for driving the slider in the up and down direction is provided. The spindle drive mechanism has, for example, a ball screw or a linear motor, and can be appropriately selected. Since the base portion 52a of the suction hand 52 is coupled to the slider 954, it can move only in the vertical direction (Z direction) of the driving direction of the slider 954. Further, the suction hand 52 can be rotated in the horizontal direction by the twisting operation of the arm 54. As shown in FIG. 20B, when the adsorption material 53 is adsorbed to the glass material G, the slider 954 can be lowered to lower the adsorption hand 52 while maintaining the horizontal position, so that the positions of the adsorption pads 53 and the glass material G can be prevented. The offset is generated by 139984.doc -46- 200948576. Further, since only the suction hand 52 can be raised and lowered without raising and lowering the arm 54, the suction hand 5 2 can be quickly raised and lowered to shorten the adsorption operation time. [Industrial Applicability] According to the present invention, it is possible to provide a mold for optical glass which is excellent in durability and mold release property from optical glass and which is excellent in precision press forming. Further, since the optical glass can be press-formed by using the mold to produce various optical elements such as polishing without being subjected to molding, it is possible to provide an optical element manufacturing method which is advantageous in terms of mass productivity and advantageous in terms of original price. The present invention has been described with reference to the specific embodiments thereof, and various modifications and changes can be made without departing from the spirit and scope of the invention. The present application is based on Japanese Patent Application No. 2008-113006, filed on Apr. 23, 2008, the content of which is hereby incorporated by reference. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the overall configuration of a press forming apparatus according to the present embodiment. Fig. 2 is a block diagram showing the configuration of a control system of the press forming apparatus 10. Fig. 3A is a view showing the steps 1 to 19 of the respective steps performed in the press forming apparatus 1A. Fig. 3B is a view showing the sequence of steps 20 to 32 of each step performed in the press forming apparatus. Fig. 4 is a longitudinal sectional view showing the configuration of the forming die unit 4, the core adjusting mechanism 9, and the upper die pressure 139984.doc • 47· 200948576. Fig. 5 is a view showing the internal structure of the forming space 42c of the dies 42 as viewed from above. Fig. 6 is an enlarged longitudinal sectional view showing the configuration of the aligning mechanism 9'. Fig. 7 is a longitudinal sectional view showing the state of press forming after (4) the mold is moved upward. Fig. 8A is a perspective view showing the configuration of the hand mechanism 5 of the furnace. Fig. 8B is a side view showing the horizontal holding mechanism % of the furnace timing mechanism 5G. Fig. 9 is a view showing the path of the adsorption pipe connected to each of the adsorption pads. Fig. 1 is an enlarged front view showing the configuration of the lower die pressure applying mechanism 37. Fig. 11A shows the centering/scraping mechanism 6 in action. Fig. 11B is a side view showing a state in which the doctor blade mechanism 6G is in a state before the operation. Fig. 12A is a plan view showing a state in which the centering and blade mechanism 6G is in operation. Fig. 12B shows a centering state. A side view of the state in which the doctor mechanism 6 is in operation. Fig. 13 is a plan view showing the centering operation of the centering and scraper mechanism 6〇. Fig. 13 is a glass element before the centering operation of the centering mechanism. Fig. 14B is a vertical cross-sectional view showing the state of the material after the centering and the different tool mechanism 6〇 is centered. 139984.doc 200948576 The state of the material is enlarged. Fig. 15B is a plan view showing a state in which the heater unit 70 is in operation. Fig. 16A is a state in which the heater unit 70 heats the glass material. Fig. 16B is a longitudinal sectional view showing a state in which the heated glass material is press-formed. Fig. 17A is a centering. The insertion rod 7 of the doctor blade mechanism 60 is inserted above the glass material. Fig. 17B is an enlarged longitudinal sectional view showing a state in which the insertion rod 700 of the centering blade mechanism 60 is lowered to separate the glass material from the upper mold 46. Fig. 1 shows the upper mold. Fig. 19A is a side view showing a modification 1 of the suction hand 52 of the hand 5 of the furnace. Fig. 19B is a modification of the suction hand 52 of the hand mechanism 5 of the furnace. 1 overlook

Fig. 2A is a perspective view showing a modification 2 of the suction hand 52 of the hand mechanism 50 in the furnace. Fig. 2B is a plan view showing a modification 2 of the suction hand 52 of the hand mechanism 50 in the furnace. [Description of main components] 10 Press forming apparatus 20 Vacuum chamber (frame) 30 Storage chamber 139984.doc • 49- 200948576 40 Molding unit 42 Molding 42c Forming space 43 Lifting base 44 Lower die 44a Upper end 46 Upper die 46a Lower end 46b Large diameter portion 46c Small diameter section 48 Cooling groove 49 Pressure transmitting member 50 Furnace hand mechanism 52 Adsorption Hand 53 Adsorption pad 60 Centering · Scraper mechanism 70 Heater unit 80 Pressure generating mechanism 81 Boost cylinder 84 Elevating drive shaft 85 Support member 90 Harming mechanism 91 Spacer 92 Spherical bearing 139984.doc -50- 200948576 Reference 94 bearing Holding member 94a Peripheral portion 100 Upper mold pressure distributor 102 Upper lever mechanism 104 Upper cylinder block 104a Piston rod 105 Upper fulcrum member 106 Upper swing member 110 Pallet table 120 Scaling type robot 122 Vacuum chuck 130 Displacement chamber 132 Communication path 140 Shifter 150 shifter moving mechanism 154 cylinder block 160 gate valve 170 vacuum pump unit 190 empty Piping 200 Nitrogen piping 210 Cooling nitrogen piping 220 Vacuum piping 260 Adsorption control unit 300 Control device 139984.doc -51. 200948576 302 Upper mold pressure rod 303 Support member 310 High pressure air supply unit 312 Suspension member 312a Lower end hook portion 312b Upper end Hook portion 320 gate valve opening and closing mechanism 330 replacement chamber pressure adjusting unit 340 chamber pressure adjusting unit 350 nitrogen gas supply unit 360 nitrogen gas cooling unit 370 lower mold pressure imparting mechanism (lower mold pressure adjusting mechanism) 435 nitrogen gas supply pipe 600 lower lever mechanism 602 Die pressurizing rod 604 lower fulcrum member 606 lower swinging member 608 mounting member 610 lower cylinder 610a piston rod 700 insertion rod 700a, 700b recess 800 glass heater 802 cassette heater 139984.doc -52- 200948576 900 horizontal retention mechanism 950 Linear Guide 952 Guide 954 Slider V1-V27 Electromagnetic Reading

139984.doc 53 ·

Claims (1)

200948576 VII. Patent application scope: 1. A stamping and forming device for optical components, which is formed by pressing a glass material between a plurality of upper molds and a plurality of lower molds paired with the upper mold to form an optical component. The method comprises: a lower die pressure imparting mechanism that applies pressure to the plurality of lower die; a die inserting the plurality of upper die uppers from above, inserting the plurality of centering lower die from below, and Guiding the relative position of the upper mold and the lower mold; a pressure generating mechanism that presses the mold upward; and an upper mold pressure distribution mechanism 'which is used to squeeze the mold according to the pressure generating mechanism Moving upwardly, pressing the upper molds downward and applying pressure independently to the upper molds; and the upper mold pressure distribution mechanism comprises: an upper cylinder that receives the pressure acting on the upper mold The load caused by the upper swing member is oscillatingly disposed via the fulcrum, and one end thereof abuts the upper end portion of the upper mold, and the other end portion is opposite to the above The cylinder block is coupled; the process t' of moving the die upward by the pressure generating mechanism to adjust the pressure of the upper cylinder to the upper die via the upper swinging member, and the lower die pressure applying mechanism The upper die is pressed upwards. 2. The press forming apparatus for an optical component according to claim 1, comprising: a housing in which at least the upper mold, the lower mold, and the mold are housed in a portion 139984.doc 200948576; the upper cylinder and the upper portion swing The member is disposed on the upper surface of the frame. 3. The press forming apparatus of the optical component of claim 1, wherein the lower die pressure imparting mechanism is configured to upwardly press the plurality of lower ones as the die is moved upward by the pressing force of the pressure generating mechanism mold. 4. The press forming apparatus of the optical component of claim 3, wherein the lower die pressure imparting mechanism comprises: a lower red body that receives a load generated by a pressure acting on the lower die; and a lower rocking member' The fulcrum is slidably disposed, and k/, the lower end portion of the lower mold abuts, and the other end portion is coupled to the lower body; and the lower swing member is swung around the fulcrum to adjust the lower portion The pressure of the cylinder against each lower die. 5. The press forming apparatus of the optical component of claim 1, comprising a plurality of anger mechanisms in the process of moving the ram under the squeezing force of the force generating mechanism, The upper mold is aligned with respect to the position of the die, and the plurality of aligning mechanisms each include: a spherical bearing that rotates the upper mold to perform the upward pressing (four) of the moon mold The axis of the upper die is aligned with respect to the axis of movement of the die; and I39984.doc 200948576 The upper die support member 'is formed to support the outer side of the spherical bearing' and is caused by the upward pressing action The above spherical bearings are separated. 6. The press forming apparatus for an optical element according to claim 1, wherein: in the upper mold pressure distribution mechanism, a connection position of the fulcrum in a longitudinal direction of the upper swing member is variable, according to a position of the fulcrum The pressure acting on the upper mold is adjusted in proportion to the total length of the upper swinging member. Φ 7. The press forming apparatus of the optical element according to claim 4, wherein the fulcrum pressure imparting means has a connection position in the longitudinal direction of the lower swinging member, and is connected to the fulcrum according to the fulcrum The pressure acting on the lower mold is adjusted by the ratio of the Q position to the total length of the lower swing member. 8. The press forming apparatus of the optical component according to claim 1, wherein in the upper mold pressure distribution mechanism, the filling pressure of the upper cylinder is variable, and the pressing force is adjusted according to the filling pressure to act on the upper mold. pressure. 9. The press forming apparatus of the optical component of claim 4, wherein the lower mold pressure is given to the machine 槿φ, 卜; +. secluded armor, the filling pressure in the lower cylinder is ~ ' change according to the above Tired of six, and tastes the pressure from the β brother & 10. The stamping of the optical component of claim 1 wherein the upper cylinder is an internal filling forming device having a gas of a specific pressure 139984.doc 200948576 11. The stamping forming apparatus of the optical component of claim 4, wherein The lower cylinder is a cylinder block in which a gas of a specific pressure is filled. 12. The press forming apparatus for an optical component according to the present invention, comprising: a crucible center member inserted between the upper mold and the lower mold before being punched, and the glass material placed on the lower side The center of the position is aligned with the center of the lower mold from both sides. The central member is formed by pressing the glass material to form the optical element, and then lowering the mold and pressing the optical element downward. Peripheral department. 13. The press forming apparatus for an optical component according to the present invention, comprising: an adsorbing hand that moves inside the frame to load the glass material on a forming surface of the lower mold in the die And extracting the above-mentioned optical component from the above-mentioned model; the hand holding mechanism 'maintains the above-mentioned adsorption hand in a horizontal state; and drives. P, which drives the suction hand via the hand holding mechanism; the hand holding mechanism holds the suction hand by a plurality of elastic rubber members. A press forming apparatus for an optical component according to claim 1, comprising: an adsorbing hand that moves inside the frame to load the glass material on a forming surface of the lower mold in the die, and The stamped optical element is taken out from the mold; 139984.doc 200948576 hand holding mechanism that holds the suction hand in a horizontal state; and a driving portion that drives the suction hand via the hand holding mechanism; The mechanism is guided in the up and down direction by linear guides. 139984.doc