TWI389854B - Mold press apparatus and manufacturing method of mold press model - Google Patents

Description

Molding machine device and method for manufacturing molded product

The present invention relates to a mold press device for press molding a molded material such as glass to produce a molded article such as an optical element, and a method for producing an optical element using the device. More specifically, the transfer block of the forming block in the apparatus for continuously performing press forming by sequentially transferring a forming block on which the formed material is placed to a plurality of processing sections is used.

In the production of a glass molded body, the following is proposed, for example, in Japanese Laid-Open Patent Publication No. Hei 7-29779, for the production of a molded article of a molded glass or the like. Device. In this manufacturing method, a processing chamber in which a heating chamber, a pressing chamber, a cooling chamber, and the like are disposed in the circumferential direction is sequentially transferred into a forming mold of a molding material in the processing chambers. In this apparatus, each of the processing chambers is surrounded by a case in the furnace body, and when the forming mold is to be transferred, the rotating table is intermittently driven around the central rotating shaft. The sample stage on which the molding die is placed is formed on the rotary table, and the molding die is sequentially fed into the respective processing chambers in accordance with the rotation of the rotary table. Therefore, the press molding can be continuously performed.

In the Japanese Patent Document 2 (Japanese Patent Publication No. Hei 8-13687), the following glass lens forming apparatus is proposed. The molding apparatus is a processing unit in which a heating unit, a deformation unit, a cooling unit, and the like are disposed in a row on a gantry provided in a chamber. Each processing unit is configured by the above unit and the lower unit. The molding block for accommodating the molding die filled with the molding material is sequentially pushed by the pusher from the outside of the room. Inside the room, the comb-shaped tweezers are used to slide the forming block to the next processing unit. The forming die system is composed of an upper die and a lower die and a die.

In the following, an optical element manufacturing apparatus is proposed as disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. In this manufacturing apparatus, a heating cycle, a molding section, and a cooling section are arranged in a series of loops, and a plurality of molding dies are sequentially transferred, and an optical component is produced from the molding material loaded in the molding die. In this manufacturing apparatus, the forming material and the forming mold are simultaneously transferred while being heated, and before the pressing pressure is applied, the forming material is transferred to the forming mold, and the pallet of the forming mold is placed. It is formed to be transferred to each process by pushing out a cylinder or pulling out a cylinder.

According to the manufacturing apparatus described in Patent Document 1, a plurality of molding modules for accommodating a molded material (for example, a glass preform) are introduced into the manufacturing apparatus in order, and are sequentially transferred in the manufacturing apparatus, so-called The treatment of heating, pressing, and cooling, and efficient and continuous obtaining of a molded body (for example, a glass optical element such as a lens). However, in this manufacturing apparatus, when the forming die placed on the rotating table is transferred by rotation, the pressing operation is performed by the rotating machine of the transfer means, so that the rotating machine itself has the possibility of deflection by the pressing load. Therefore, in the period in which the molding die and the sample stage are stopped, it is necessary to raise the support rod to support one part of the rotating machine. Further, when the number of processing chambers (pressing chambers) is increased in accordance with the number of pressing processes, the diameter of the rotating table becomes large. Therefore, the manufacturing apparatus described in Patent Document 1 has a problem of becoming large.

The molding apparatus described in Patent Document 2 is placed on a lower unit of a processing unit disposed on a gantry at an equal pitch, guided by a guide rail to guide the forming unit, and transferred to the deformed unit forming unit. The forming mold inside applies a pressing load. According to this configuration, since the transfer of the forming unit is slid on the guide rail, the vibration of the friction deteriorates the shape of the molded body surface of the molded low viscosity. Further, when the molding unit includes the molding material before molding in the internal state and performs the sliding movement, the shape of the lower mold and the shape of the molding material may shift the position of the molding material. When the molding material at the offset position is pressed, the thickness of the molded body may be shifted. In addition, at the time of transfer, there is a fear of unsuitable temperature fluctuation due to a change in the contact area between the forming die and the heating and cooling unit.

In the manufacturing apparatus described in Patent Document 3, a plurality of pallets arranged on a rail are placed on a forming mold, and the pallet is sequentially transferred by pushing out a cylinder or pulling out a cylinder, and pushing the pallet on the pressing section. Forming die. In the meantime, the same as the molding apparatus of Patent Document 2 is caused by the frictional vibration of the plate. Further, since the adjacent pallets are pushed out in order, there is also a so-called temperature management problem in which the molding molds cannot be performed.

Here, an optical element such as a camera such as a digital camera or an optical pickup such as a pickup or a small camera for a terminal is extremely high in optical performance. In particular, when such an optical element is formed by a precision molding machine, it is necessary to eliminate the defect surface shape of the thickness of the molding material in the molding die, and the surface accuracy of the load unevenness. It is necessary to perform temperature management and vibration countermeasures in various processes.

In view of the above problems, the problem of the present invention is to prevent the vibration of the molding die generated during the transfer of the molding die, and to accurately perform the temperature management in each processing unit, and to provide a compression molding machine that can improve the molding accuracy. And a method of manufacturing a molded article.

In order to solve the above problems, in the present invention, a molding die including a molding die that accommodates a molding material is transferred, and a molding machine device that performs press molding on the molding material for molding is provided, and is characterized in that: The processing unit is linearly arranged along the direction in which the forming block is transferred; the fixing support is provided in each of the processing units for detachably supporting the forming block; and the transfer device supports the fixed support table The forming block is simultaneously separated from the fixed support table by a plurality of pieces and transferred to the next processing unit. The fixed support portion of the processing unit includes a carrier on which the shaped block is placed, and the operation of the carrier is controlled.

Here, the "processing for forming" includes heat treatment, pressing treatment, and cooling treatment.

According to the present invention, a molding block including a molding die for accommodating a molding material is transported from a fixed support table to a next processing unit, and a molding block is disposed on a fixed support table of the secondary processing unit. The forming treatment process can suppress the vibration of the forming block during transfer to a minimum. Therefore, since the position of the molding material in the forming block is not shifted, it is possible to prevent the occurrence of surface shape defects by offset thickness and surface accuracy of uneven load, and the like, and it is possible to stably produce high precision when the molding material is press-formed. Optical components. Further, since the forming block can be subjected to a treatment on a predetermined fixed support stand, it is not necessary to provide a mechanism for supporting the transfer means by raising the support rod as in the prior art, and stable press forming can be performed with a simple configuration.

According to still another aspect of the present invention, the transfer device repeats the movement of the rise, the forward, the lowering, and the retracting operation by one cycle, and the plurality of forming blocks are simultaneously raised from the lower side by the carrier, thereby A plurality of shaped blocks are characterized by linear transfer in each step along the transfer direction.

Here, the "action of ascending, advancing, descending, and retreating of the vehicle" is an operation of ascending, advancing, descending, and retreating, and when the independent execution is performed, for example, when the side rises and advances, or when it descends The retreating occasions also include occasions where the movement path of the vehicle is elliptical, oblong or true.

The movement of the carrier that is raised, advanced, processed, and retracted to one cycle is performed by performing a series of movements and then has a predetermined stop time, which is ideal for intermittent movement for a certain period of time.

According to the present invention, it is possible to minimize the vibration of the forming block during the transfer and to contact the carrier only during the transfer of the forming block, and to contact each other when transferring the device to any place in the device. When it is fixed, the shaped block is subjected to the same temperature change when it is transferred to any place in the apparatus, and the temperature management performed in each processing unit can be determined. Therefore, it is possible to improve the molding precision of the press-formed product. In addition, the processing unit is only required to secure a space for the operation of the carrier, so that an unnecessary space can be reduced, and the size of the device can be reduced.

In the present invention, the molding block is provided with a sample stage on which the molding die and the molding die are placed, and the carrier is preferably placed on the bottom surface of the sample stage to transfer the molding block. In such a configuration, the carrier is attached to the bottom surface of the sample stage to transfer the forming block. Therefore, the carrier is not in direct contact with the forming die, so that mutual temperature interference can be avoided. Therefore, the temperature management in each processing unit is reliably performed, and the compactification of the device and the accuracy of the optical element can be stabilized.

In the present invention, the plurality of processing units are characterized in that: a plurality of processing units having a heating means for heating the forming block to a predetermined temperature and arranged on the first line; and a cooling means for cooling the forming block And a plurality of processing units arranged on the second line. In this configuration, the first line that performs the heat treatment and the second line that performs the cooling process can be divided into the second line, and the influence of the heat between the two lines can be suppressed. The first line and the second line are arranged substantially in parallel, and since each of the two ends is connected by a trunk, a smooth transfer operation can be performed.

In the present invention, the carrier is attached to the bottom surface of the forming block at a position away from the central axis of the forming die, and the forming block is preferably raised. That is, the center axis of the forming die is a position at which the load is applied during press forming, and thus the forming block is prevented from being displaced in position with the portion subjected to the forming load, so that the transfer of the forming block can be performed.

In the present invention, it is preferable that a positional deviation preventing means for preventing a positional shift of the forming block on the carrier is formed between the carrier and the forming block. Such a positional deviation preventing means is preferably constituted by at least one of a magnetic attraction force and a frictional force acting between the carrier and the forming block. In such a configuration, when the carrier or the forming block is thermally deformed as the number of times of repeated pressing, the mechanical fitting is not functional, but the magnetic attraction or friction is The advantage of being able to continue functioning.

In the present invention, the transfer device is configured to perform a forward movement after the vehicle performs the ascending operation, and at least one of the ascending motion and the forward motion is at least one of the start of the operation and the end of the operation. It is desirable to set the speed to be slower than the speed from the beginning to the end of the motion. According to this configuration, since the molding block can be transferred without causing a large acceleration to the molding block, the vibration of the molding block and the molding material can be suppressed to a minimum. Therefore, the surface precision of the molded article can be improved.

The press-molded article obtained by press-molding the molding material using the molding machine of the present invention does not generate vibration during the transfer of the molding die, and therefore has high precision in size or shape. It is also possible to perform temperature management in each processing unit, so that the accuracy of the size or shape of the dots is high.

In the present invention, since the plurality of forming blocks are simultaneously raised and transferred by the operation of the carrier to rise, advance, descend, and retreat, it is possible to suppress the vibration of the forming block during the transfer to a minimum. Therefore, since the position of the formed material on the forming block is not shifted, it is possible to prevent the surface shape defect depending on the thickness of the formed material, and it is possible to stably produce high shape accuracy and surface precision depending on the occurrence of uneven surface accuracy due to uneven load. A molded article such as an optical element. Further, the formed block is only in contact with the carrier during the transfer, so that the contact area with each other is constant when transferred to any position. Therefore, since the molded block is transferred to any position and only receives the same temperature change, the temperature management in each processing unit is surely performed. Therefore, it is possible to improve the forming precision.

(Description of an ideal embodiment of the invention)

Hereinafter, embodiments of the invention will be described with reference to the drawings.

(all components)

Fig. 1 is a plan view showing an example of a molding machine device to which the present invention is applied. In the first embodiment, the press machine device 1 is a main body portion 2 in which a plurality of processing portions such as press segments 14a, 14b, and 14c are formed in the device casing 9, and a metal mold disassembling assembly portion 3 adjacent to the outer portion of the main body portion 2 A rough structure. The inside of the device casing 9 is in the environment of a non-oxidizing gas. In this mold decomposition group 3, a region where the molding material is disassembled, assembled, and formed into a molding die is performed.

The main body portion 2 has three hot-heating sections 12a, 12b, and 12c, a soaking section 13, and three pressing sections 14a, 14b, and 14c on the lower side of the drawing, and is arranged in a linear first line in this order. 10, and the two quenching sections 21a and 21b, the discharge section 22, the preliminary heating section 23, and the supply section 24 on the upper side of the figure are arranged in a linear second line 20 in this order. The main body unit 2 further includes a first stage in which the supply section of the second line 20 and the in-side section 11 of the first line 10 are relayed by a feed mechanism 31 including a ball screw. The trunk line 30; and the second trunk line 40 that is relayed by the feed mechanism 41 including the ball screw, and the quench sections 21a and 21b of the first line 10 and the second line 20 are provided.

Here, in the first wire 10 including the heat treatment of the rapid heat treatment or the soaking treatment and the pressing treatment, the heating portion 8 is provided by sandwiching the molding block 50 from both sides. The heating unit 8 heats the forming block 50 to a predetermined temperature suitable for press forming.

On the other hand, in the second line 20 that performs the cooling process, the discharge process of the forming block, and the supply process, a cooling unit (not shown) for cooling the forming block 50 is provided.

In order to suppress the temperature influence of the adjacent room, the sections are separated by a shutter (not shown).

In the press machine device 1 configured as described above, each of the wire systems is rotated to the right in the drawing. The molding block 50 to be described later is first supplied from the metal mold decomposition assembly unit 3 to the supply section 24, and then passes through the inlet side section 11, and accordingly, the three hot sections 12a, 12b, and 12c of the first line 10 and the soaking section 13 The three pressing sections 14a, 14b, and 14c are sequentially transferred, and heat treatment, soaking treatment, and pressing treatment are performed therebetween. Further, the forming block 50 subjected to the pressing process is transferred to the quenching sections 21a and 21b of the second line 20 via the outlet side section 15, and is cooled by the cooling section to a predetermined temperature or lower, and then transferred from the discharge section 22 to the metal. The mold decomposes the assembly 3 .

(Composition of processing unit)

The configuration of the processing unit (or processing chamber) of the molding machine device 1 of the present invention will be described with reference to Figs. 2 and 3 . Fig. 2 is a longitudinal cross-sectional view showing a state in which the pressing block 14a (14b, 14c) is stopped by the molding die 51 in which the molding material 51 and the sample stage 55 are accommodated, and the pressing process is performed. Fig. 3 is a longitudinal sectional view showing a state in which the forming material 50 is transferred to the next stage after the forming material of the pressing section 14a (14b, 14c) is pressed by the forming die 51. In the second and third figures, the second line 20 is omitted from illustration.

In the second and third figures, the fixing support 60 is placed in the upright position in the pressing section 14a (14b, 14c). On the upper surface of the fixed support table 60, a molding block 50 formed by a molding die 51 and a sample stage on which the molding die 51 is placed is held. The forming die 51 is composed of a lower die, an upper die, and a die. The sample stage 55 is provided, for example, with a rectangular base portion and a shaft portion standing upright in the center of the base portion, and the molding die 51 is supported by the upper end portion of the shaft portion. On the one hand, on the one hand, the fixing support 60 is formed with positioning projections 63, and below the molding block 50 (below the sample table 55), positioning holes 58 are formed. Further, since the positioning projection 63 of the fixing support 60 is nested into the positioning hole 58 of the forming block 50, the forming block is supported on the upper surface of the fixing support 60. A molding material such as glass preforming is held between the lower mold and the upper mold of the forming mold 51. This forming material is press-formed by pressing the upper die by lowering the press head. The forming mold 51 is held in a press chamber containing the heating heater 8 at a height position which is the best in thermal efficiency. The inner surface of the pressed section 14a (14b, 14c) is placed with a heat reflected from the heater 8, and the heat energy is efficiently supplied to the reflector of the forming mold 51 (illustration omitted) ). In addition, the press chamber is formed to have a structure in which the internal volume is reduced as much as possible for the purpose of reducing the heat capacity.

Here, the fixing support 60 is not only the pressing sections 14a, 14b, and 14c, but is disposed in all the processing sections, and the forming block is placed on the upper surface of the fixing support 60 in any of the processing sections. Since the first line 10 is formed by equal pitches, the fixed support 60 is also arranged at an equal pitch. Also in the second line 20, each segment is configured to have an equal pitch, so the fixed support table 60 is also arranged at an equal pitch. The pitch of each segment of the first line 10 may be equal to the pitch of each segment of the second line 20, but in this embodiment, the pitch is set to be different. In the case where an abnormality occurs between the segments, the area where the forming block 50 is evaded from each processing unit may be provided. In any case, the stop position of the forming block 50 is also set to an equal pitch.

(Method of manufacturing optical element)

With reference to Figs. 1 to 3, a method of manufacturing an optical element such as a lens will be described as a press machine device 1 as described above. The molding material used in the molding machine device 1 is not particularly limited, but a glass material such as glass preforming may be used as the molding material. Such a molded material can be preformed (hot-formed) into a shape having a spherical shape, a biconvex shape, a plane and a convex surface, or the like by dropping or flowing down from the molten state onto the receiving mold. In particular, it is suitable for two convex curved shapes.

(a) Glass material supply ~ Forming mold assembly process

In the molding machine forming apparatus 1 of the present embodiment, the glass material which is preliminarily formed into a spherical shape or a convex curved surface shape is supplied as follows in a state in which the lower mold of the metal mold disassembling assembly portion 3 is separated. That is, the lower mold is pulled out from the cylindrical mold, and the glass material transferred by the transfer arm attached to the pad is supplied to the exposed molding surface of the lower mold. When the suction pad reaches a predetermined position, when the molding surface placed on the lower mold of the mounting table is in a positional accuracy position within a predetermined range, the glass material is released from the lower mold by releasing the suction of the glass material. On the surface. The transfer arm immediately evades. After the glass material is supplied to the lower mold, the lower mold is assembled to the lower mold by inserting the upper mold into the upper mold. The clearance between the die and the upper die and the lower die in the radial direction is about 5 μm or less.

(b) Heating process

The molding die 51 in which the glass material is housed is mounted on the sample stage 55 in the supply section 24, and is sequentially transferred as the molding block 50 to the rapid heating sections 12a, 12b, and 12c and the soaking section 13. In the meantime, the forming block 50 is heated, and the forming material and the forming die 51 are made to have a viscosity suitable for press forming temperature (for example, a pressure of 10 ⁶ to 10 ⁹ poises). The heating method is a heater that is heated by resistance, a high-frequency induction coil, or the like, and is not particularly limited.

(c) Pressing process

After the molding die 51 which is at a suitable temperature is transferred to the pressing section 14a (14b, 14c), it is pressurized by a predetermined pressure (30 to 200 kg/cm ² ) from the upper side of the molding die 51 by a pressing head 140 (10 seconds) ~ a few minutes). The thickness of the molded article is defined when the lower surface of the pressing head 140 is in contact with the upper surface of the dies, and thereafter, the rising pressing head 140 releases the pressure to transfer the forming die 51 to the cooling portion. The pressing process is preferably carried out using the illustrated pressing sections 14a, 14b, 14c, and can be executed in multiple stages. For example, 14a in the press section, molding material is pressurized to a predetermined thickness, and then in the press section 14b, compared to a press section 14a can be relatively low temperature (e.g. glass viscosity, a considerable ¹⁰⁹ to ¹⁰¹³ poise viscosity) under pressure. Further, in the temperature range equivalent to that of the pressing section 14b, the pressing of the third stage may be performed in the pressing section 14c controlled to be lower than the pressing section 14a.

(d) cooling process

In the quenching sections 21a and 21b, quenching by the cooling gas in the quenching chamber is performed. At this time, although the glass (forming material) shrinks, the upper mold is lowered by the weight of the upper mold following the shrinkage of the glass, so that good shape accuracy is obtained. In order to lower the upper mold following the contraction of the glass, the upper mold has a flange at its upper portion and a segment (recess) for receiving the flange portion at the upper end of the mold. Then, since the depth of the upper end portion of the dies is set to be larger than the thickness of the upper flange portion of the upper mold, and is formed in the same surface period from the upper surface of the upper mold and the upper mold (by the second drawing) When the head 140 is cut, the upper mold is made smaller by its own weight.

(e) decomposition of the model

The molding die 51 is transferred from the main body portion 2 to the metal mold disassembling assembly portion 3 via the discharge portion 22, where the decomposition of the molding die 51 and the removal of the molded article are performed. The sample stage 55 on which the molding die 51 is placed is transferred to the right side of the drawing along the second line 20, and is preheated in the preliminary heating section 23, and then transferred to the supply section 24.

(f) Removal of optical components (molded articles)

The transfer arm is inserted between the upper and lower molds to be separated, and the molded article is sucked and taken out by the suction pad at the tip end. After that, repeat the new cycle.

Still in a series of processing processes (heating, forming, cooling, etc.), when there is a predetermined trouble (oversetting the processing time, etc.), it is assumed that the power supply of the heater is stopped and the heating is maintained by the preheating. Therefore, the glass material located inside the forming mold 51 of the heating portion is softened and fused to the molding surface of the mold, which may adversely affect the molding surface. Therefore, when a process failure occurs, the molding block 50 may be a program that is stopped by avoiding the intermediate position of each processing unit (the position where the door is blocked).

(Composition of transfer device)

In the first line 10 of the press machine device 1 configured as described above, the transfer device 70 described below is incorporated with reference to the second and third figures. Further, in the second line 20, the transfer device is incorporated, but the basic configuration of the transfer device on the second line 20 is the same as that of the transfer device 70 of the first line 10, and only the first line will be described. 10 transfer device 70.

In the second and third figures, the transfer device 70 has a pair of lifting shafts 72a and 72b which are fixed to the inside of the cylindrical bodies 91a and 91b of the apparatus casing 9 on both sides of the fixing support 60. Moving up and down; a plate 73 is horizontally held above the lifting shafts 72a, 72b; and guide rails 73a, 73b are fixed to the plate 73 in parallel. The transfer device 70 further includes a pair of sliders 75a and 75b that are slidable on the respective guide rails 73a and 73b, and two linear carriers 71a and 71b that are fixed to the respective sliders 75a, Above the 75b. The two carriers 71a and 71b are disposed on the bottom surface of the sample stage 55 so as to be parallel to the both sides of the fixed support base 60, and extend linearly in the transfer direction of the forming block 50.

Therefore, when the forming block 50 is to be transferred, when the carriers 71a and 71b are raised as shown in Fig. 3, the carriers 71a and 71b are placed in the bottom surface of the forming block 50, and are superposed on the forming die. The forming block 50 is raised by the position where the center axis is away. The position away from the central axis of the forming die is a position shifted from the position where the forming die 51 is mounted in this embodiment.

Further, the transfer device 70, the pair of carriers 71a and 71b as the elevation drive device 70a, includes a motor device 76, a cam member 74 coupled to the output shaft of the motor device 76, and a cam at the cam member 74. A roller 96 that slides on the surface. The roller 96 is attached to the lower surface of the coupling member 77 that connects the lower end portions of the lifting shafts 72a and 72b. Therefore, when the cam member 74 is advanced by the motor unit 76 (moving to the left side in the drawing), the elevating shafts 72a and 72b, the plate 73, and the sliders 75a and 75b are raised, so that the carriers 71a and 71b of the two portions are simultaneously raised.

In Fig. 3, the lifting shafts 72a, 72b are in the upward to upper state. When the cam member 74 is retracted by the motor unit 76, the elevating shafts 72a and 72b, the plate 73, and the sliders 75a and 75b are lowered. Therefore, the carriers 71a and 71b of the two portions are simultaneously lowered. Here, the cam surface of the cam member 74 is formed to be more gentle than the intermediate slope so that the inclination of the surface near the start point and near the end point is formed. Therefore, the carriers 71a and 71b are immediately controlled to rise and fall, and the speed before the stop is started, and the speed is slower than the middle speed. The amount of rise of the carriers 71a and 71b may be such a value as to deviate from the positioning projections 63 of the fixing support 60 by the positioning holes 58 of the sample stage 55.

Further, the transfer device 70 has the pair of carriers 71a and 71b as the horizontal drive unit 70b: a motor unit 78; and a plate 79 connected to the output shaft of the motor unit 78 by a feed mechanism such as a ball screw. A slit formed in the longitudinal direction of the plate 79 is fitted with a shaft portion that protrudes from the two sliders 75a and 75b. Therefore, when the lifting/lowering device 70a raises and lowers the sliders 75a and 75b, the shaft portion moves up and down in the slit. Further, when the output shaft of the motor unit 78 is rotated in the forward direction (the direction to the left in the first drawing), the operation is transmitted to the sliders 75a and 75b by the plate 79 and the shaft portion, so that the sliders 75a and 75b and the carrier are provided. The members 71a and 71b are capable of advancing at a rising position. When the output shaft of the motor unit 78 is rotated in the backward direction (the direction to the right in the first drawing), the operation is transmitted to the sliders 75a and 75b by the plate 79 and the shaft portion, so that the sliders 75a and 75b and the carrier are provided. The members 71a and 71b are capable of retreating at the lowered position.

(transfer action)

Next, the operation of the transfer device 70 will be described based on Figs. 4(a) to 4(e). 4(a) to 4(e) are the processing sections immediately after the processing (for example, the pressing process), and the forming block 50, the fixing support 60, and the carrier 71a are viewed from the side by the mode. 71b positional relationship diagram. 4(a) to 4(e), in order to clarify the positional relationship between the plurality of forming blocks 50 and the plurality of fixed support tables 60, the plurality of forming blocks 50 are attached to (1), (2), The symbol of (3) is attached to the fixed support table 60 with the symbols (A), (B), and (C).

First, at the time when the processing shown in Fig. 4(a) is ended, the carrier 71a (71b) is slightly lower than the lower surface of the forming block 50. In this state, the elevation driving device of the transfer device 70 is actuated. As shown in Fig. 4(b), the carrier 71a (71b) when the carrier 71a (71b) of the two portions is raised is used to make the plurality of molding blocks 50 together. It rises from below and exits from the fixed support 60. In the meantime, the moving speed at the start of the rise and at the end of the lift is controlled by the cam surface of the cam member 74 (Fig. 2) at a slower speed than the intermediate speed. In the fourth (a) to fourth (e) figures, the amount of rise of the carrier 71a (71b) is expressed in order to avoid the fact that the drawing becomes complicated and exaggerated.

Next, as shown in Figs. 4(c) and 4(d), the horizontal driving device 70b of the transfer device 70, the carrier 71a (71b) transfers a plurality of forming blocks 50 to the adjacent fixed support table. 60 on. In the meantime, the movement speed immediately before the start of the transfer and the stop of the transfer is controlled by the motor unit 78 (Fig. 2) of the horizontal drive unit 70b if the speed is slower than the middle speed. When such advancement is performed, the sliders 75a and 75b are moved along the guide rails 73a and 73b as described in Fig. 2 .

Next, in the state shown in Fig. 4(d), the lifting/lowering device 70a of the transfer device 70 is actuated to lower the carrier 71a (71b) of the two portions, and the plurality of forming blocks 50 are placed on the fixed support table 60 at the same time. on. When a plurality of forming blocks 50 are placed on the fixed support table 60, the moving speed before the start of the lowering and before the end of the lowering is also made slower than the intermediate speed, and the cam by the cam member 74 (Fig. 2) Face to control. Then, the carrier 71a (71b) is lowered from the position shown in Fig. 4(e) to a slightly lower position (a position indicated by a chain line).

Next, the horizontal driving device 70b of the transfer device 70 is actuated, and the carrier 71a (71b) is retracted to the position shown in Fig. 4(a), and returns to the original position.

The above ascending motion, forward motion, descending motion, and backward motion are repeated in sequence, and a plurality of shaped blocks are sequentially transferred to each step.

(main effects of the embodiment)

As described above, in the transfer device 70 of the press machine device 1 of the embodiment, the carriers 71a and 71b are repeatedly moved, moved forward, lowered, and retracted into a cycle, and the carriers 71a and 71b are used to make the plural. The forming blocks 50 are simultaneously raised, and then intermittently transferred in a linear manner at each step in the transfer direction. Therefore, it is possible to suppress the vibration of the forming block 50 during the transfer to a minimum. Therefore, the position of the molding material on the molding block 50 (in the molding die 51) is not deviated, so that it is possible to prevent the surface shape defect depending on the thickness of the molding material, the surface accuracy defect due to uneven load, and the like, and it is stable. Production of high precision optical components.

Further, the forming block 50 is only in contact with the carriers 71a and 71b during the transfer, so that the contact area with each other when transported at any place is constant. Therefore, since the molding block 50 is subjected to the same temperature change only when it is transferred at any place, the temperature management can be reliably performed in each processing unit. Therefore, it is possible to improve the forming precision. In addition, the processing unit may be a space that can ensure the operation of the carriers 71a and 71b, and the unnecessary space can be reduced, and the size of the device can be reduced.

Further, the molding block 50 is provided with a sample stage 55 and a molding die 51. The carriers 71a and 71b are attached to the bottom surface of the sample stage 55 to transfer the molding block 50. Therefore, the carriers 71a and 71b are not directly in contact with the molding die 51. Can avoid mutual temperature interference. Therefore, the temperature management of each processing unit is reliably performed, and the device can be downsized and the accuracy of the optical element can be stabilized.

Further, the carriers 71a, 71b are attached to the bottom surface of the forming block 50, abutting from a position away from the central axis thereof, and in order to raise the forming block 50, the forming block 50 does not interfere with the position of the portion subjected to the forming load. The transfer of the forming block 50 can be performed.

Further, in the present embodiment, the transfer device 70 is configured to perform the forward movement after the racks 71a and 71b perform the ascending operation, and is in any one of the ascending motion, the forward motion, and the descending motion, and also starts the motion and ends the motion. The previous speed is set to be slower than the speed from the beginning to the end of each motion. Therefore, it is possible to suppress the vibration of the forming block 50 and the molding material to a minimum.

(Other embodiments)

Descriptions of other embodiments of the invention. It is preferable to arrange a positional displacement preventing mechanism for preventing the positional displacement of the forming block 50 on the carriers 71a and 71b between the carriers 71a and 71b and the forming block 50. As such a positional deviation preventing mechanism, for example, magnetic attraction force can be utilized. For example, as shown in Fig. 5(a), in the portion where the carriers 71a and 71b hold the molding block 50, the concave portion 71c of the loose fitting block 50 is formed, and the permanent magnet 71d is placed in the concave portion 71c. Further, in the molding block 50, the sample stage 55 is made of a magnetic material such as stainless steel. In this configuration, the molding block 50 is reliably mounted and held by the carriers 71a and 71b, and does not cause a positional shift during the transfer.

As shown in Fig. 5(b), the permanent magnet 71d may be provided on the side of the forming block 50 (the table 55-1 of the sample stage 55). When the recesses 71c of the carriers 71a and 71b are thermally expanded in consideration of the carriers 71a and 71b, it is preferable that the mounting surface of the forming block 50 is slightly larger than the mounting surface.

In order to utilize such a magnetic force positional deviation preventing mechanism, unlike the mechanical positional deviation preventing mechanism, the forming block 50 can be easily lifted from the fixed support by the carriers 71a and 71b. Further, when the carriers 71a, 71b or the forming block 50 are thermally deformed as the number of times of repeated pressing, the mechanical fitting is not functional, but the magnetic attraction is continued to prevent the positional shift. The advantages of function.

In the example shown in Fig. 5(a), the configuration in which the sample stage 55 is in contact with the permanent magnet 71d is formed. In this case, the small concave portion 71c is formed so that the sample stage 55 and the permanent magnet 71d are in a non-contact state, and the magnetic attraction force can be used to prevent the positional shift of the forming carrier 50 on the carriers 71a and 71b. .

Further, the positional deviation preventing mechanism for preventing the positional displacement of the forming block 50 on the carriers 71a and 71b is at least one of the holding blocks 50 on the bottom surface of the forming block 50 and the carriers 71a and 71b. It is also possible to increase the frictional resistance by applying a treatment such as roughening. Further, the positional deviation preventing mechanism that is combined with the attraction force of the magnetic attraction can be prevented by the positional shift of the frictional force.

Further, in the above embodiment, the carriers 71a and 71b independently perform the operations of ascending, advancing, descending, and retreating. However, for example, an operation of advancing to advance or an operation of retreating while descending may be performed. Further, the movement trajectories of the carriers 71a and 71b are rectangular, but are not limited thereto, and may be, for example, an ellipse, an ellipse, or a true circle.

2. . . Body part

3. . . Metal mold decomposition group

9. . . Device frame

10. . . Line 1

11. . . Into the side

12a, 12b, 12c. . . Hot section

13. . . Soaking section

14a, 14b, 14c. . . Press segment

15. . . Side section

20. . . Line 2

21a, 21b. . . Quenching section

twenty two. . . Discharge section

twenty three. . . Preheating section

twenty four. . . Supply section

30. . . First trunk

40. . . 2nd trunk

41. . . Feeding mechanism

50. . . Forming block

51. . . Forming die

55. . . Sample station

58. . . Positioning hole

60. . . Fixed support

63. . . Positioning protrusion

70. . . Transfer device

70a. . . Lifting drive

71a, 71b. . . vehicle

72a, 72b. . . Lifting shaft

73. . . board

73a, 73b. . . guide

74. . . Cam member

75a, 75b. . . Slider

77. . . Connecting member

76. . . Motor unit

78. . . Motor unit

79. . . board

91a, 91b. . . Cylinder

96. . . Roller

140. . . Pressing head

1 is a plan view showing an example of a molding machine device to which the present invention is applied; and FIG. 2 is a longitudinal sectional view showing a state before the pressing treatment is performed in the pressing section in the molding machine device of the present invention; The figure is a longitudinal sectional view showing a state in which a molding block is transferred in a pressing section in the molding machine apparatus of the present invention; and 4(a) to 4(e) are drawings showing a molding machine apparatus assembled in the present invention. FIG. 5(a) and 5(b) are explanatory views showing a positional deviation preventing mechanism incorporated in the molding machine apparatus of the present invention.

50(1), (2), (3). . . Forming block

60(A), (B), (C), (D). . . Fixed support

71a, 71b. . . vehicle

Claims (7)

A molding machine device which performs a press forming of a molding material by a process for applying molding while transferring a molding block containing a molding material for molding a molding material, and is characterized in that: a plurality of processing portions are provided The transfer direction of the forming block is linearly arranged; the fixed support table is respectively disposed in the processing portion for detachably supporting the forming block; and the transfer device is configured to support a plurality of the shaped blocks supported by the fixed support table Simultaneously leaving the fixed support station and transferring to the next processing unit, and including a carrier for arranging the shaped block on the fixed support station of the next processing unit, and controlling the operation of the carrier, wherein the transfer device is By repeating the movement of the carrier to rise, advance, descend, and retreat to one cycle, the plurality of molding blocks are simultaneously raised from below by the carrier, and linearly transferred along the transfer direction step by step. . A molding machine apparatus according to claim 1, wherein the molding block includes a molding die and a sample stage on which the molding die is placed, and the carrier abuts against a bottom surface of the sample stage to transfer the molding block. The molding machine device according to claim 1, wherein the plurality of processing units have a plurality of processing units arranged in a first line having a heating means for heating the forming block to a predetermined temperature; Will The second line of the cooling means for cooling the forming block is arranged in a plurality of processing sections. The press device of claim 1, wherein the carrier abuts against a position of a bottom surface of the forming block that is offset from a central axis of the forming die to raise the forming block. The molding machine device of claim 1, wherein a positional deviation preventing means for preventing a positional displacement of the forming block on the carrier is provided between the carrier and the forming block. The movement preventing means uses at least one of a magnetic attraction force and a frictional force acting between the carrier and the forming block. The molding machine device of claim 1, wherein the transfer device is at least one of the rising operation, the forward movement, and the lowering operation, at least at the start of the operation and before the end of the operation The speed of one of them is set to be slower than the period from the start to the end of the operation. A method for producing a press-molded article by press molding the formed material using the press molding machine of the first application of the patent application.