WO2005032796A1 - 射出成形機及び射出成形方法 - Google Patents
射出成形機及び射出成形方法 Download PDFInfo
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- WO2005032796A1 WO2005032796A1 PCT/JP2004/014495 JP2004014495W WO2005032796A1 WO 2005032796 A1 WO2005032796 A1 WO 2005032796A1 JP 2004014495 W JP2004014495 W JP 2004014495W WO 2005032796 A1 WO2005032796 A1 WO 2005032796A1
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- Prior art keywords
- mold
- injection
- movable platen
- injection molding
- processing means
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/762—Measuring, controlling or regulating the sequence of operations of an injection cycle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/766—Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76066—Time
- B29C2945/7607—Time start
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76066—Time
- B29C2945/76073—Time termination
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76083—Position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76177—Location of measurement
- B29C2945/76224—Closure or clamping unit
- B29C2945/76227—Closure or clamping unit mould platen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
- B29C2945/76501—Pressure derivative, change thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76505—Force
- B29C2945/76508—Force derivative, change thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76561—Time duration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76568—Position
- B29C2945/76571—Position start position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76702—Closure or clamping device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76859—Injection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
Definitions
- the present invention relates to an injection molding machine and an injection molding method.
- an injection molding machine has an injection device, the injection device has a heating cylinder provided with an injection nozzle at a front end, a screw rotatably and advancing and retracting in the heating cylinder, and A drive device for rotating or moving the screw forward and backward is provided.
- the screw is rotated, dropped from the hopper, heated and melted in the heated cylinder, melted, and stored in front of the screw head. Accordingly, the screw is retracted.
- the injection step the screw is advanced, and the resin accumulated in front of the screw head is injected by the injection nozzle force to fill the cavity of the mold apparatus, and in the cooling step, the cavity is cooled.
- the resin in the space is cooled and solidified to form a disk substrate as a molded product.
- the information surface of the stamper provided in the mold device is transferred to the disk substrate.
- the mold apparatus is composed of a fixed mold and a movable mold, and the movable mold is moved toward and away from the fixed mold by a mold clamping device, thereby closing the mold of the mold apparatus.
- the mold is closed and the mold is opened (for example, see Patent Document 1).
- FIG. 1 is a time chart showing the operation of a conventional injection molding machine.
- the mold clamping step is started, the first mold clamping is performed, and the injection step is started in the injection device, and the predetermined time.
- the resin is injected at the injection pressure.
- the injection process is completed in the injection device, the pressure holding process is started, and the pressure of the resin in the cavity space is maintained at a predetermined pressure.
- the first mold clamping is completed, and the second mold clamping is performed.
- the pressure holding process is completed in the injection device, the cooling process is started, and the third mold clamping is performed in the mold clamping device.
- the cooling process is completed in the injection device.
- the mold clamping process is completed in the mold clamping device.
- a depressurization and mold opening process is started in the mold clamping device, and the movable platen is retracted. Then, at timing t7, the depressurization and mold opening process is completed, and when the movable platen is stopped, the ejection process is started, the disk substrate is taken out, and at timing t8, the ejection process is completed, and the injection molding is completed. I do.
- Patent Document 1 JP-A-2002-86507
- the temperature of the mold apparatus, the heating cylinder, and the like are lowered, and the molding temperature is lowered.
- lowering the molding temperature only lowers the transfer accuracy of the information surface of the stamper, but not only causes distortion (distortion) on the molded disk substrate, residual stress, etc., causing birefringence, etc.
- the optical characteristics of the device are deteriorated.
- the present invention solves the problems of the conventional injection molding machine described above, and can shorten the molding cycle without deteriorating the transfer accuracy and optical characteristics of the information surface of the stamper and the injection molding machine.
- An object is to provide a molding method.
- the mold closing processing means for moving the movable platen forward to close the mold, and the movable platen is provided between the mold opening position and the mold closing position.
- the apparatus includes a movable platen position determination processing means for determining whether or not a fixed injection start position has been reached, and an injection processing means for starting an injection step when the movable platen has reached the injection start position.
- the mold closing processing means for moving the movable platen forward to close the mold, and the movable platen is set between the mold opening position and the mold closing position.
- Movable platen position determination processing means for determining whether or not the detected injection start position has been reached, and injection processing means for starting an injection step when the movable platen has reached the injection start position.
- the molding cycle can be shortened by an earlier start of the injection step.
- the molding temperature can be sufficiently increased without the necessity of lowering the temperature of the mold apparatus, the heating cylinder, and the like, it is possible to prevent the transfer accuracy of the information surface of the stamper from being lowered. .
- distortion and residual stress do not occur in the molded article after molding, and it is possible to improve the mechanical properties of the molded article, and it is possible to suppress the occurrence of birefringence or the like that is more likely to occur.
- the optical characteristics of the molded product can be improved.
- FIG. 1 is a time chart showing the operation of a conventional injection molding machine.
- FIG. 2 is a schematic view of an injection molding machine according to a first embodiment of the present invention.
- FIG. 3 is a block diagram of a control circuit according to the first embodiment of the present invention.
- FIG. 4 is a time chart showing the operation of the injection molding machine according to the first embodiment of the present invention.
- FIG. 5 is a process comparison diagram between the injection molding method according to the first embodiment of the present invention and a conventional injection molding method.
- FIG. 6 is a time chart illustrating an operation of the injection molding machine according to the second embodiment of the present invention.
- FIG. 7 is a process comparison diagram of the injection molding method according to the second embodiment of the present invention and a conventional injection molding method.
- FIG. 2 is a schematic diagram of an injection molding machine according to the first embodiment of the present invention
- FIG. 3 is a block diagram of a control circuit according to the first embodiment of the present invention.
- 11 is a fixed-side mold unit
- 13 is a fixed platen as a first support member
- 14 is a fixed mold as a first mold
- the fixed mold 14 is It has a mold mounting plate 15, a disk plate 16 fixed to the mold mounting plate 15, and a mirror plate 18 fixed to the disk plate 16.
- a stamper (not shown) is attached to the mirror surface board 18, and an information surface having a plurality of fine irregularities is formed on the stamper.
- reference numeral 21 denotes a movable mold unit
- 23 denotes a movable platen as a second support member which is disposed so as to be able to advance and retreat (move in the horizontal direction in FIG. 2) with respect to the fixed platen 13.
- Reference numeral 24 denotes a movable mold as a second mold which is opposed to the fixed mold 14 and is brought into and away from the fixed mold 14 as the movable platen 23 advances and retreats.
- the fixed mold 14 and the movable mold 24 constitute a mold apparatus.
- an injection device 31 is provided behind the fixed platen 13 (to the right in FIG. 2).
- the injection device 31 is provided with a heating cylinder 32, an injection nozzle 33 attached to a front end (left end in FIG. 2) of the heating cylinder 32, and a rotatable and movable back and forth inside the heating cylinder 32.
- a screw, not shown, and a driving device 34 are provided, and the driving device 34 serves as a measuring motor 41 as a measuring driving unit for rotating the screw, and as an injection driving unit for moving the screw forward and backward.
- An injection motor 43 is provided.
- a weighing process means (not shown) of the control unit 46 performs a weighing process, drives the weighing motor 41 to rotate a screw, and outputs a hopper (not shown). The force also drops, and the resin supplied into the heating cylinder 32 is heated, melted, and stored in front of the screw head provided at the front end of the screw. Accordingly, the screw is retracted.
- an injection processing means (not shown) of the control unit 46 performs an injection process, drives the injection motor 43 to advance the screw, and removes the resin accumulated in front of the screw head. The liquid is injected from the injection nozzle 33 and is filled in the cavity.
- the resin in the cavity is cooled and solidified to form a disk substrate as a molded product.
- the information surface of the stamper is transferred to a disk substrate, and a plurality of fine pits are formed on the disk substrate.
- a mold clamping device 30 is disposed behind the movable platen 23 (left side in FIG. 2).
- the mold clamping device 30 includes a toggle support (not shown) as a third support member, and the toggle sabot.
- a toggle mechanism (not shown) disposed between the movable platen and the movable platen 23, and a mold clamping motor 45 as a mold clamping drive for operating the toggle mechanism are provided.
- the mold clamping device 30 is composed of the fixed platen 13, the movable platen 23, the toggle mechanism, the mold clamping motor 45, and the like.
- a mold closing processing means (not shown) of the control unit 46 performs a mold closing process, drives the mold clamping motor 45 to operate a toggle mechanism, and moves the movable platen 23 forward. Perform mold closing.
- a mold clamping process (not shown) of the control unit 46 is performed.
- the mold is clamped, the toggle mechanism is further operated, and the mirror plate 28 is pressed against the mirror plate 18 to perform mold clamping. Then, along with the mold clamping, the concave space forms the above-mentioned cavity space having a disk shape between the mirror-surface board 18 and the mirror-surface board 28. Subsequently, in a depressurization mold opening process, mold opening processing means (not shown) of the control unit 46 performs mold opening processing, activates a toggle mechanism, and stops pressing of the mirror surface plate 28 against the mirror surface plate 18. After releasing the pressure, the movable platen 23 is retracted to open the mold.
- an encoder 47 as a position detection unit is provided in front of the mold clamping motor 45 to detect the position of the movable platen 23, and a detection signal of the encoder 47 is transmitted to the control unit 46.
- the position of the movable platen 23 is determined based on the rotation speed of the mold clamping motor 45. So that it can be recognized. Note that the encoder 4
- a reusable sensor disposed between the movable platen 23 and an injection molding machine frame (not shown) can be used.
- the control unit 46 functions as a computer, and includes a C (not shown).
- processors such as PU and MPU
- memories such as RAM and ROM.
- FIG. 4 is a time chart showing the operation of the injection molding machine according to the first embodiment of the present invention.
- FIG. 5 is a process comparison diagram between the injection molding method according to the first embodiment of the present invention and the conventional injection molding method.
- the mold closing processing means starts a mold closing stroke, and moves the movable platen 23 from the retreat limit position Sa indicating the mold open limit position. Then, the movable mold 24 is advanced toward the forward limit position Sd representing the mold closed position.
- the movable platen position determination processing means (not shown) of the control unit 46 performs a movable platen position determination process, and the movable platen 23 moves forward with the retreat limit position Sa. It is determined whether or not the force has reached the injection start position Sb preset with the limit position Sd. Subsequently, when the movable platen 23 reaches the injection start position Sb at the predetermined timing tl2, the injection processing means starts the injection process in the injection device 31, advances the screw, and performs the injection at the predetermined injection pressure pattern Pa. Inject fat. Note that, at the injection start position Sb, the movable mold 24 does not abut on the fixed mold 14.
- the pressure of the resin filled in the cavity at timing tl3 becomes higher than a predetermined value.
- the mold closing process is completed, the pressurizing step is started, and the mold clamping force increases.
- the mold clamper naturally increases, so that the completion of the mold closing process and the start of the pressure increasing process are automatically performed.
- the mold clamping force further increases as the movable mold 24 comes into contact with the fixed mold 14.
- the position at which the boosting step is started is referred to as a boosting start position Sc.
- the mold clamping device 30 When the mold clamping force is increased in the pressurizing step, the mold clamping device 30 is not shown. The tie bar extends, and the movable platen 23 is advanced further by that amount. Then, when the movable platen 23 reaches the forward limit position Sd at the timing tl4 and the pressurizing step is completed, the mold clamping processing means starts the mold clamping step. On the other hand, in the injection device 31, the injection processing means completes the injection step.
- the movable platen 23 does not stop until the movable mold 24 comes into contact with the fixed mold 14, and mold closing is performed using the inertial force of the movable platen 23 during forward movement. Therefore, it is not necessary to stop the movement of the movable platen 23 which is moving forward at a high speed, and it is not necessary to use energy for performing the braking operation of the movable platen 23. Can be cut.
- the pressure-holding processing means (not shown) of the control unit 46 performs a pressure-holding process, starts the pressure-holding process in the injection device 31, and performs a predetermined pressure-holding pattern. Pb maintains the pressure of the resin in the cavity space.
- the mold clamping processing means performs the first mold clamping with the first mold clamper P1 in the mold clamping device 30 and then the second mold clamp with the second mold clamper P2 (P2 ⁇ P1). Tighten.
- the force at which the first mold clamping is started at the timing tl4 together with the completion of the injection step the mold clamping step is completed after the first mold clamping is started.
- the injection step can be completed at a predetermined timing up to.
- the pressure-holding processing means completes the pressure-holding step, and the cooling processing means (not shown) of the control unit 46 performs a cooling process, starts the cooling step, and fixes it.
- the mold 14 and the movable mold 24 are cooled to a predetermined temperature.
- the mold clamping processing means performs third mold clamping with a third mold clamp P3 (P3 ⁇ P2) following the second mold clamping.
- the cooling processing means completes the cooling step
- the mold clamping processing means completes the mold clamping step.
- the mold opening processing means performs mold opening processing, depressurizes the mold clamping device 30, starts a mold opening process, and moves the movable platen 23 from the forward limit position Sd to the retreat limit position Sa. Retract. Subsequently, at timing tl7, the mold opening processing means completes the depressurization 'mold opening process. Then, the movable platen 23 is stopped. Then, the removal processing means (not shown) of the control unit 46 performs a removal process to start a removal process, activates a removal device (not shown) to remove the disk substrate from the mirror surface disk 28, and completes the removal process at timing tl8. And finish injection molding.
- the injection start position Sb and the forward end position Sd are set by operating the operation unit 48 (FIG. 3), and the injection start position Sb is set behind the forward end position Sd.
- the injection process is started before the movable platen 23 reaches the forward limit position Sd, that is, before the mold closing process is completed and before the pressurizing process is started.
- the molding cycle can be shortened only by the fact that the start of the injection process is started earlier, that is, only a short time.
- the molding temperature can be sufficiently increased, so that the transfer accuracy of the information surface of the stamper decreases. Can be prevented. As a result, distortion and residual stress do not occur on the molded disk substrate, and the mechanical characteristics of the disk substrate can be improved. In addition, the optical characteristics of the disk substrate can be improved.
- FIG. 6 is a time chart showing the operation of the injection molding machine according to the second embodiment of the present invention
- FIG. 7 is a graph showing the relationship between the injection molding method according to the second embodiment of the present invention and the conventional injection molding method. It is process comparison drawing.
- the mold closing processing means starts the mold closing process, and moves the movable platen 23 as the second support member to the mold opening limit position. From the retreat limit position Sa to the forward limit position Sd indicating the mold closing position.
- the movable platen position determination processing means determines whether the movable platen 23 has reached the injection start position Sb. Subsequently, when the movable platen 23 reaches the injection start position Sb at a predetermined timing t22, the injection processing means starts the injection process in the injection device 31 and advances the screw to set a predetermined injection pressure pattern Pa. Inject the resin with At the injection start position Sb, the second metal The movable mold 24 as a mold does not contact the fixed mold 14 as the first mold.
- the mold closing process is completed, the pressurizing step is started, and the mold clamping force increases.
- the mold clamper naturally increases, so that the completion of the mold closing process and the start of the pressure increasing process are automatically performed.
- the mold clamping force further increases as the movable mold 24 comes into contact with the fixed mold 14.
- the position at which the boosting step is started is referred to as a boosting start position Sc.
- the injection processing means completes the injection step, the pressure-holding processing means starts the pressure-holding step, and a predetermined pressure-holding pattern Pb is applied to the inside of the cavity space.
- the pressure of the resin is maintained.
- the timing t24 is set at the same timing as when the movable mold 24 contacts the fixed mold 14.
- the force t24 is set slightly before the movable mold 24 contacts the fixed mold 14. Or it can be set at a later timing.
- the resin in the cavity space is removed by the mirror-faced boards 18 and 28 until the movable platen 23 reaches the forward limit position Sd at timing t25. It is compressed in a sandwiched state.
- the pressure-holding processing means completes the pressure-holding step
- the cooling processing means performs the cooling process, starts the cooling step, and fixes the fixed mold 14.
- the movable mold 24 is cooled to a predetermined temperature.
- the mold clamping means performs third mold clamping with a third mold clamper P3 following the second mold clamping.
- the cooling means completes the cooling step
- the mold clamping means completes the mold clamping step. Make it.
- the mold opening processing means performs mold opening processing, starts depressurization in the mold clamping device 30 and starts the mold opening process, and moves the movable platen 23 from the forward limit position Sd to the retreat limit position Sa. Retract. Subsequently, at a timing t28, the mold opening processing means completes the depressurization ′ mold opening process, and stops the movable platen 23. Then, the take-out processing means performs a take-out process to start a take-out process, operates the take-out machine to take out a disk substrate as a molded product from the mirror surface disk 28, and completes the take-out process at a timing t29, End the injection molding.
- the injection process is started before the movable platen 23 reaches the forward limit position Sd, that is, before the mold closing process is completed and before the pressurizing process is started.
- the molding cycle can be shortened only by the fact that the start of the injection process is started earlier, that is, only for a short time.
- the resin filled in the cavity space spreads to the periphery in the cavity space while the temperature is high. Therefore, the transfer accuracy of the information surface of the stamper can be further improved.
- the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and does not exclude the scope of the present invention.
- the present invention can be applied to an injection molding machine for molding a disk substrate.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005514467A JPWO2005032796A1 (ja) | 2003-10-06 | 2004-10-01 | 射出成形機及び射出成形方法 |
DE112004001891T DE112004001891T5 (de) | 2003-10-06 | 2004-10-01 | Spritzgussmaschine und Spritzgussverfahren |
US10/572,759 US7501083B2 (en) | 2003-10-06 | 2004-10-01 | Injection molding machine and injection molding method |
Applications Claiming Priority (2)
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PCT/JP2004/014495 WO2005032796A1 (ja) | 2003-10-06 | 2004-10-01 | 射出成形機及び射出成形方法 |
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US (1) | US7501083B2 (ja) |
JP (1) | JPWO2005032796A1 (ja) |
KR (1) | KR100731688B1 (ja) |
CN (1) | CN100491107C (ja) |
DE (1) | DE112004001891T5 (ja) |
TW (1) | TWI261021B (ja) |
WO (1) | WO2005032796A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5160062B2 (ja) * | 2006-10-20 | 2013-03-13 | 株式会社精工技研 | ディスク成形用金型及び鏡面盤 |
GB2489754A (en) * | 2011-04-08 | 2012-10-10 | Rpc Containers Ltd | Injection moulding with delayed mould closure |
JP6186113B2 (ja) * | 2012-03-26 | 2017-08-23 | 住友重機械工業株式会社 | 射出成形機 |
AT513654B1 (de) * | 2012-11-23 | 2015-05-15 | Engel Austria Gmbh | Spritzgießmaschine mit prädiktiver Steuerung oder Regelung |
JP5837124B2 (ja) * | 2014-04-09 | 2015-12-24 | ファナック株式会社 | 射出成形機の制御装置 |
JP5808850B1 (ja) * | 2014-12-26 | 2015-11-10 | 東芝機械株式会社 | 型締装置、成形装置および成形方法 |
CN106671375B (zh) * | 2016-12-13 | 2019-01-25 | 东莞富强鑫塑胶机械制造有限公司 | 一种缩短注塑成型周期的方法 |
US20220212385A1 (en) * | 2019-05-17 | 2022-07-07 | Canon Virginia, Inc. | Manufacturing method and injection molding system |
CN111660518B (zh) * | 2020-05-07 | 2022-05-17 | 海天塑机集团有限公司 | 一种消除注塑机压缩成型合模过冲的方法及装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63135221A (ja) * | 1986-11-27 | 1988-06-07 | Honda Motor Co Ltd | 樹脂製品の成形方法 |
JPH03118130A (ja) * | 1989-10-02 | 1991-05-20 | Toyo Mach & Metal Co Ltd | 射出成形機の制御方法 |
JPH06226806A (ja) * | 1993-01-29 | 1994-08-16 | Mitsubishi Materials Corp | 射出成形方法 |
JPH08276479A (ja) * | 1995-04-06 | 1996-10-22 | Meiki Co Ltd | ディスク基板の成形方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5370518A (en) * | 1992-01-29 | 1994-12-06 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for injection and compression molding |
US6331263B1 (en) * | 1993-12-22 | 2001-12-18 | Idemitsu Petrochemical Co., Ltd. | Method for producing laminated moldings |
US5547619A (en) * | 1994-09-30 | 1996-08-20 | The Japan Steel Works, Ltd. | Toggle type injection molding process |
JP3519511B2 (ja) * | 1995-07-27 | 2004-04-19 | ファナック株式会社 | 射出成形機の制御方法および装置 |
US5945047A (en) * | 1997-03-13 | 1999-08-31 | The Japan Steel Works, Ltd. | Method of injection-compression molding |
DE19847740C1 (de) | 1998-10-16 | 2000-03-23 | Richard Herbst | Verfahren zum Steuern eines Bewegungsablaufs eines bewegbaren Bauteils einer Kunststoff-Spritzgießmaschine |
JP3325254B2 (ja) | 1999-05-20 | 2002-09-17 | 株式会社名機製作所 | 型締装置およびその作動制御方法 |
CN1192870C (zh) * | 2000-02-09 | 2005-03-16 | 内兹塔尔机械公司 | 控制/调节冲压过程的方法及注塑机的驱动和控制装置 |
US6716374B2 (en) * | 2000-03-30 | 2004-04-06 | Matsushita Electric Industrial Co., Ltd. | Clamp pressure control method for injection molding process |
DE10146800A1 (de) | 2001-03-21 | 2002-09-26 | Mannesmann Rexroth Ag | Elektromechanische Spannvorrichtung |
DE10115253A1 (de) | 2001-03-28 | 2002-10-31 | Siemens Ag | Produktionsmaschine |
AT5361U1 (de) | 2001-05-11 | 2002-06-25 | Engel Gmbh Maschbau | Kunststoffverarbeitungsmaschine |
JP2003191300A (ja) * | 2001-12-26 | 2003-07-08 | Toshiba Mach Co Ltd | 薄肉成形品の射出圧縮成形方法及びその装置 |
-
2004
- 2004-10-01 CN CNB2004800292150A patent/CN100491107C/zh not_active Expired - Fee Related
- 2004-10-01 US US10/572,759 patent/US7501083B2/en not_active Expired - Fee Related
- 2004-10-01 DE DE112004001891T patent/DE112004001891T5/de not_active Withdrawn
- 2004-10-01 KR KR1020067006546A patent/KR100731688B1/ko active IP Right Grant
- 2004-10-01 JP JP2005514467A patent/JPWO2005032796A1/ja active Pending
- 2004-10-01 WO PCT/JP2004/014495 patent/WO2005032796A1/ja active Application Filing
- 2004-10-04 TW TW093129970A patent/TWI261021B/zh not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63135221A (ja) * | 1986-11-27 | 1988-06-07 | Honda Motor Co Ltd | 樹脂製品の成形方法 |
JPH03118130A (ja) * | 1989-10-02 | 1991-05-20 | Toyo Mach & Metal Co Ltd | 射出成形機の制御方法 |
JPH06226806A (ja) * | 1993-01-29 | 1994-08-16 | Mitsubishi Materials Corp | 射出成形方法 |
JPH08276479A (ja) * | 1995-04-06 | 1996-10-22 | Meiki Co Ltd | ディスク基板の成形方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1863662A (zh) | 2006-11-15 |
KR100731688B1 (ko) | 2007-06-22 |
US20070057392A1 (en) | 2007-03-15 |
CN100491107C (zh) | 2009-05-27 |
DE112004001891T5 (de) | 2006-11-02 |
TW200523096A (en) | 2005-07-16 |
TWI261021B (en) | 2006-09-01 |
KR20060085633A (ko) | 2006-07-27 |
JPWO2005032796A1 (ja) | 2007-11-15 |
US7501083B2 (en) | 2009-03-10 |
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