WO2002096616A1 - Machine de moulage par injection et compression, procede de moulage par injection et compression, produit moule par injection et compression selon ce procede et produit forme en resine thermoplastique - Google Patents
Machine de moulage par injection et compression, procede de moulage par injection et compression, produit moule par injection et compression selon ce procede et produit forme en resine thermoplastique Download PDFInfo
- Publication number
- WO2002096616A1 WO2002096616A1 PCT/JP2002/005329 JP0205329W WO02096616A1 WO 2002096616 A1 WO2002096616 A1 WO 2002096616A1 JP 0205329 W JP0205329 W JP 0205329W WO 02096616 A1 WO02096616 A1 WO 02096616A1
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- WIPO (PCT)
- Prior art keywords
- mold
- injection compression
- molded product
- injection
- parallelism
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/561—Injection-compression moulding
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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
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
- B29C2045/1788—Preventing tilting of movable mould plate during closing or clamping
-
- 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
- B29C45/67—Mould opening, closing or clamping devices hydraulic
Definitions
- the present invention relates to an injection compression molding apparatus, an injection compression molding method, and an injection compression molding product and a thermoplastic resin molded product obtained by molding a mold by clamping the mold between an intermediate mold clamping state and a final mold clamping state. It is about. Background art
- Conventional injection molding equipment is provided with a mold base, support plates erected on both ends of the mold base, guide members horizontally arranged between the support plates, and guide members slidably.
- Moving mold fixed mold fixed to one support board facing the moving mold, and mold opening / closing fixed to the other supporting board to move the moving mold forward and backward And a cylinder.
- the movable mold is moved to the fixed mold along the guide member, clamped with sufficient mold clamping force, and the molten resin is injected into the mold and cooled and solidified. By doing so, it becomes a reshaped product.
- the mold when manufacturing a molded product for such a special purpose, first, the mold should be set to the intermediate mold clamping state where the mold is slightly opened, or the mold clamping force enough to open the mold by injection pressure. Then, when the molten resin is injected into such a mold, the mold is re-clamped to the final mold-clamped state so that no residual stress is left on the molded product.
- a compression molding method is adopted (Japanese Patent Application Laid-Open No. 2000-6231, Japanese Patent Application Laid-Open No. No. 98 publication).
- the conventional injection molding apparatus described above is designed on the premise that it is used in a normal injection molding method of injecting a molten resin in a final mold clamping state in which a mold is sufficiently clamped, so that an insufficient mold is required. No consideration is given to the parallelism between the movable mold and the fixed mold when the molten resin is injected in the tightened state.
- the present invention provides an injection compression molding apparatus, an injection compression molding method, and an injection compression molded article and a thermoplastic resin molded article that enable high-quality molded articles to be manufactured over a long period of time. Is what you do. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a schematic configuration diagram of an injection compression molding apparatus according to an embodiment of the present invention.
- FIG. 2 is an explanatory view showing an arrangement state of a parallelism correcting mechanism in the same device.
- ⁇ FIG. 3 (a) is a vertical sectional front view of a head member and a rod member in the parallelism correcting mechanism.
- FIG. 3B is a side view of the head member.
- FIG. 4 is a block diagram of the control device.
- FIG. 5 is a circuit diagram of a hydraulic system used in the parallelism correcting mechanism.
- FIG. 6 is an explanatory diagram showing a state in which a molten resin is injected into a mold.
- FIG. 7 (a) is a front view showing a molded product formed in Example 1.
- FIG. 7 (b) is a cross-sectional view taken along line AA of FIG. 7 (a).
- FIG. 7 (c) is a sectional view taken along the line BB of FIG. 7 (a).
- FIG. 8 (a) is a front view of a molded article molded in Example 2.
- FIG. 8 (b) is a cross-sectional view taken along line CC of FIG. 8 (a).
- FIG. 8 (c) is a cross-sectional view taken along line DD of FIG. 8 (a).
- FIG. 9 is an explanatory view showing a state of conventional injection compression molding. BEST MODE FOR CARRYING OUT THE INVENTION
- the injection compression molding apparatus is used for manufacturing a molded product of a transparent lens, an optical device component represented by CD, FD, and a precision device component.
- the device can be used as a molding device for a transparent member for a vehicle, an outer plate for a vehicle, an interior material for a vehicle, a plate-shaped optical function molded product, and the like.
- the above transparent members for vehicles include glazing materials (such as front door windows, rear door windows, quarter windows, back windows, and back door windows, and sunroofs and roof panels), headlamp lenses, solar cell covers, windshields, And information display type instrument panel.
- glazing materials such as front door windows, rear door windows, quarter windows, back windows, and back door windows, and sunroofs and roof panels
- Vehicle exterior panels include automobile exterior panels, cowls, and hard tops, etc.
- Vehicle interior materials include instrumental panels and the like, and plate-shaped optical function molded products include Fresnel lenses and optical Diffusion sheet, lenticular lens seed, prism sheet and lens array.
- the injection compression molding equipment consists of a molding unit 1 that cools and solidifies the molten resin to form a molded product, and a PC (polycarbonate) resin and PMMA (polymethyl methacrylate) are applied to the molding unit 1. Rate) Melting of resin etc.
- the molding unit 1 includes a mold clamping base 3, and support plates 4 and 5 are provided at both ends of the mold clamping base 3.
- a rod-shaped guide member 6 is provided between the support plates 4 and 5 at each corner.
- a mold opening / closing cylinder 7 is provided on one support plate 4 located on the left side in the figure so as to move a cylinder rod 7 a forward and backward with respect to the other support plate 5.
- a guide engaging member 8 is provided at the distal end of the guide.
- the guide member 6 described above is slidably inserted into each corner of the guide engagement member 8, and the guide engagement member 8 moves along the guide member 6 to form a mold.
- the forward / backward direction of the cylinder rod 7a of the opening / closing cylinder 7 is restricted.
- the guide engaging member 8 is provided with a flat movable side common plate 9 which is detachable.
- a fixed common plate 13 in the form of a flat plate is provided detachably in opposition to the movable common plate 9.
- a movable mold 10 and a fixed mold ⁇ 1 are provided at the center of the opposed mounting surfaces of the common plates 9 and 13 respectively, and the movable mold 10 is fixed by the mold opening / closing cylinder 7. By clamping the mold 11, a cavity 12 corresponding to the outer shape of the molded product is formed in both molds 10, 1 ⁇ .
- a gate 11 a through which the molten resin flows is formed.
- the gate 11 a is formed along the outer wall surface of the fixed mold 1, and one end is opened on the back side (injection unit 2 side) of the fixed mold 11. The end is open to the side of the cavity 12.
- the parallelism correcting mechanism 20 includes a contact mechanism 21 provided on the mounting surface of the moving-side common plate 9 and a positioning cylinder 22 provided on the mounting surface of the fixed-side common plate 13. ing.
- the positioning cylinder 22 is composed of a hydraulic cylinder in which a cylinder rod 22 a can move forward and backward with respect to the contact mechanism 2 ⁇ .
- the contact mechanism 21 includes a rod member 23 arranged in parallel with the movable mold 10 and a head provided at the tip of the rod member 23 so as to be able to advance and retreat. And a door member 24.
- the rod member 23 and the head member 24 are connected to a male screw portion 23 a formed at the distal end of the mouth member 23 and a head member 24. They are connected by a micrometer mechanism in which female screw portions 24b formed inside are screwed.
- the male screw portion 23a and the female screw portion 24b are set at a predetermined pitch such as 2 mm, and the head member 24 is attached to the tip of the rod member 23 every one rotation. It can move forward and backward with a predetermined pitch of 2 mm.
- a scale 24a is formed on the periphery of the head member 24 so that the operator can recognize the amount of rotation (the amount of forward / backward movement) of the head member 24. Have been.
- the parallelism correcting mechanism 20 configured as described above rotates the head member 24 to position the rod member 23 at a predetermined position, and then moves the cylinder rod 22 a of the positioning cylinder 22.
- FIG. 5 shows a hydraulic circuit for controlling the operation of each positioning cylinder 22 described above.
- This hydraulic circuit is designed to supply and discharge hydraulic oil so as to move the cylinder rod 22 a forward and backward with respect to the positioning cylinder 22 of each parallelism correction mechanism 20 and to hold it at an arbitrary holding pressure.
- Part 30 and cylinder lock A moving unit 31 that switches the supply direction of hydraulic oil to the positioning cylinder 22 so as to move the cylinder 22a forward and backward, and an oil supply unit 32 that supplies hydraulic oil to the positioning cylinder 22. have.
- the oil supply unit 3 2 includes an oil pan 3 3 for storing hydraulic oil, an oil level gauge 3 4 for detecting the oil level of the hydraulic oil stored in the oil pan 3 3, and an operation level stored in the oil pan 3 3. It has a variable pump 35 for feeding oil and a pump control valve 36 for controlling the pump tilt (pump discharge amount) according to the pump discharge pressure.
- a main switching valve 38 constituting the reciprocating unit 31 is connected to the supply side of the variable pump 35 via a check valve 37.
- the main switching valve 38 is a 4-port 3-position type electromagnetic pilot switching valve, and one output port 38a is connected to the hydraulic pressure setting section 30 via the advance pipe 39. ing.
- the other output port 38 b of the switching valve 38 is connected to the drawing port 22 b of the positioning cylinder 22 via the retraction pipe 40.
- the main switching valve 38 has a function of stopping the supply of the hydraulic oil to the positioning cylinder 22 by setting the valve body to the neutral position and setting the cylinder rod 22 a in a fixed state. 2 is connected to one output port 3 8a to supply hydraulic fluid to the hydraulic pressure setting section 30 to allow the cylinder rod 22 to advance to the positioning cylinder 22 and to supply oil.
- the part 32 to the other output port 38b the hydraulic fluid is drawn in and supplied to the port 22b to retreat the cylinder rod 22a with respect to the positioning cylinder 22. Have.
- a first variable throttle valve 42 is provided in the retreat pipe 40 connected to the reciprocating part 31 so as to limit the retreat speed of the cylinder port 22a in the positioning cylinder 22. ing.
- the hydraulic pressure setting section 30 connected to the advance pipe 39 is connected in series with the pressure reducing valve 44 set to a predetermined pressure and the pressure reducing valve 44 to limit the advance speed of the cylinder rod 22a.
- the second variable throttle valve 45, the pressure reducing valve 44 and the second (2) Between the pressure gauge 46 for detecting the pressure between the variable throttle valves 4 and 5, the pressure indicator 47 and the pressure detector 48 composed of a load cell amplifier, and the pressure reducing valve 44 and the second variable throttle valve 45 It has a connected proportional electromagnetic pressure control valve 49 and a pressure change amplifier 50 for changing the set pressure of the proportional electromagnetic pressure control valve 49.
- the set pressure of the proportional solenoid pressure control valve 49 is set to be higher than the predetermined pressure of the pressure reducing valve 44 by 0.7 Pa or more.
- the proportional electromagnetic pressure control valve 49 is connected to the push-back and return pipe 51.
- the push-back / return pipe 51 is connected to the oil pan 33 via a filter 52 for removing foreign substances in the hydraulic oil and a heat exchanger 53 for cooling the hydraulic oil.
- the hydraulic pressure setting unit 30 equipped with the proportional solenoid type pressure control valve 49 is configured such that when hydraulic oil is supplied from the oil supply unit 32, the predetermined pressure of the pressure reducing valve 44 and the advancement of the second variable throttle valve 45 At the same time, the cylinder rod 22a advances at the same speed, and the pressing force that presses the cylinder rod 22a in the backward direction is proportional to the set pressure of the electromagnetic pressure control valve 49 (the holding pressure of the cylinder rod 22a). ), The hydraulic oil is discharged from the proportional electromagnetic pressure control valve 49 to the return pipe 51 and the cylinder rod 22a is retracted.
- the control device 60 includes a base 70 wired so as to be able to transmit and receive various signals.
- the base 70 includes an input unit 61 that detects the presence or absence of a current-carrying state and serves as an input signal, a high-speed counter unit 62 that counts pulse signals and obtains a counter value, a voltage signal and a current signal.
- a / D conversion unit 63 that takes in analog signals and converts them into digital signals, power supply unit 64 that supplies power to controller 60, and converts digital signals into analog signals.
- the DZA conversion unit 65 that outputs DC, the DC output unit 66 that outputs DC current, and the data in the controller 60 are transmitted by a protocol according to the communication standard such as the RS232C standard.
- a line computer link unit 67 for enabling transmission and reception, and a CPU unit 68 for controlling and monitoring the operation of each of the units 61 to 67 are provided.
- An evening switch panel 69 that allows various operations to be set in one evening is connected ( an emergency stop switch 55 and a plurality of limit switches 56 are connected to the input unit 61).
- the emergency stop switch 55 is used when the operation of the injection compression molding machine is abnormally stopped and the operation is urgently stopped at the discretion of the operator.
- the limit switch 56 is provided in the mold opening / closing cylinder 7 and the positioning cylinder 22 shown in FIG. 1, and for example, sets the amount of advance of these cylinders 7 and 22.
- a pulse encoder 57 is connected to the high-speed counter unit 62.
- the pulse encoder 57 is provided in the parallelism correcting mechanism 20 shown in FIG. 1, and outputs a pulse signal as the head member 24 rotates.
- a load cell 59 is connected to the A / D conversion unit 63 via an amplifier 58.
- the DZA conversion unit 65 is connected to a coil part 49 a of a proportional electromagnetic pressure control valve 49 via an amplifier 58.
- the load cell 59 is provided in the hydraulic pressure setting unit 30 and detects the hydraulic pressure applied to the proportional electromagnetic pressure control valve 49.
- a plurality of relays 71 are connected to the DC output unit 66, and these relays 71 can control opening and closing of the pressure reducing valve 44 and the like in the hydraulic circuit.
- An information processing device 73 such as a personal computer is connected to the computer link unit 67 via a communication line 72, and the information processing device 73 transmits and receives data to and from a control device 60.
- By injection compression molding Manage the operation status and production status of the device.
- the moving mold 10 and the contact mechanism 21 are mounted on the mounting surface of the moving-side common plate 9, while the fixed mold 1 1 and the positioning cylinder 2 2 are mounted on the mounting surface of the fixed-side common plate 13. And are attached.
- the movable-side common plate 9 and the fixed-side common plate 13 are transported to an existing injection molding machine, and the guide engaging member 8 and the support plate 5 in the molding machine are opposed to each other. Each is attached to the surface.
- the existing injection molding apparatus is converted into an injection compression molding apparatus in which four parallelism correcting mechanisms 20 are arranged around the dies 10 and 11.
- the work of returning the injection compression molding device to the original injection molding device can be completed in a short time by removing the common plates 9 and 13.
- common plates 9 and 13 are divided plates (not shown) in which a plurality of devices are attached to one common plate as shown in FIG. ) Is also possible.
- the head member 24 is rotated and moved to the movable common plate 9 side.
- the movable mold 10 is advanced by the mold opening / closing cylinder 7 in the direction of the fixed mold 11 and stopped when the movable mold 10 advances to the intermediate mold clamping position corresponding to a predetermined compression amount required for the molded product.
- the mold is slightly opened at a predetermined distance L from the fully clamped clamping position (or final clamped state). Is set to the intermediate mold clamping state.
- the positioning cylinder 22 is driven and its cylinder rod 22 a advances, and the rod 22 a stops at the maximum advance amount, the head member 24 rotates while this stopped state is maintained. As a result, it is moved in the direction of the fixed-side common plate 13 (positioning cylinder 22).
- the position where the end surface of the head member 24 abuts on the cylinder rod 22 a is set to the “0” position, and the rotation of the head member 24 is further continued from this position.
- the leading end surface of the head member 24 is set at a predetermined distance from the movable side common plate 9.
- This setting operation is performed by the operator visually checking the scale formed on the peripheral portion of the head member 24.
- the positioning cylinder 22 having the maximum amount of advance and the head member 24 positioned at a predetermined distance are brought into contact with each other, so that all the parallelism correction mechanisms 2 having these members 22 and 24 are brought into contact with each other. 0 will have the same length.
- the mounting surfaces of the common plates 9 and 13 are set at the same distance by the parallelism correcting mechanisms 20 arranged at four positions, so that the dies 10 and 11 in the intermediate mold clamping state are set. A high degree of parallelism will appear in between.
- the movable common plate 9 is moved in the fixed common plate 13 direction by the mold opening / closing cylinder 7, and the movable mold 10 and the contact mechanism 21 provided on the movable common plate 9 are moved. Advance in the direction of the fixed-side common plate 13 This advance is continued until the movable mold 10 is brought into the intermediate mold clamping state corresponding to the predetermined amount of compression required for the molded product.
- the contact mechanism 21 moves forward together with the movable mold 10, the end surface of the head member 24 contacts the cylinder rod 22 a of the positioning cylinder 22.
- the two common plates 9 first, the two common plates 9.
- the head member 24 of the contact mechanism 21 provided on the narrow side between the first and second contacts the cylinder rod 22 a of the positioning cylinder 22.
- the common plate 9 When the moving-side common plate 9 continues to move forward in this state, the common plate is set with the parallelism correcting mechanism 20 of a predetermined length in contact between the contact mechanism 21 and the positioning cylinder 22 as a fulcrum. The inclination between the common plates 9 and 13 is reduced, and finally, the common plates 9 and 13 are set to the same distance by the total parallelism correcting mechanism 20 of a predetermined length, so that the metal in the intermediate mold clamping state is set. The mold between 10 and 11 is corrected to high parallelism.
- the molten resin is injected from the injection unit 2.
- the molten resin flows through the gate 11 a of the fixed mold 11, and flows into the cavity 12 from one side of the cavity 12, thereby causing the molten resin to flow into the cavity 12.
- the cavity 12 is filled while being pushed from the other side.
- a resin pressure P (repulsive force) acts between the molds 10 and 11 as shown by arrows in FIG. Unevenness occurs in the mold (it becomes smaller from one side to the other side), causing an uneven load.
- control device shown in Fig. 4 resets the dies 10 and 11 from the intermediate clamping state.
- the holding pressure of each parallelism correcting mechanism 20 (setting of the proportional electromagnetic pressure control valve 49, so that the parallelism between the dies 10 Pressure) is adjusted.
- a large set pressure is set for the proportional electromagnetic pressure control valve 49 of the hydraulic pressure setting unit 30 arranged at a position where a small offset load acts, while a large offset load is set.
- a small set pressure is set for the proportional electromagnetic pressure control valve 49 of the hydraulic pressure setting unit 30 arranged at the position where the pressure acts.
- the total value (PY + P) of the holding pressure PY and the resin pressure P of the total parallelism correcting mechanism 20 is reset.
- the mold clamping force W is also set to a small value.
- the resin pressure P As the resin pressure P, a predicted value registered in advance in the control device 60 in FIG. 4 may be used, or an actual measurement value measured by a pressure sensor (not shown) may be used.
- the holding pressure of the parallelism correcting mechanism 20 When the holding pressure of the parallelism correcting mechanism 20 is set in this way, even if a large eccentric load is generated due to a difference in the resin pressure P (repulsive force), the holding of the parallelism correcting mechanism 20 is performed. Since the pressure minimizes the influence of the unbalanced load, high parallelism by the parallelism correcting mechanism 20 in the intermediate clamping state can be maintained even during re-clamping.
- the intermediate mold is used.
- a high degree of parallelism in the tightened state and at the time of re-clamping can be maintained by the parallelism correcting mechanism 20.
- the molten resin is almost evenly filled in the molds 10 and 11 by correcting the high degree of parallelism between the molds 10 and 11 in the state by the parallelism correction mechanism 20 which is the parallelism correction means. be able to.
- the molten resin in the dies 10 and 11 can be uniformly compressed, and the molten resin is formed by cooling.
- the residual stress in the molded product can be made sufficiently small to obtain a high quality molded product.
- the parallelism correcting mechanism 20 maintains the high parallelism between the dies 10 and 11 in the intermediate mold clamping state, so that high quality molding is achieved. Articles can be manufactured over a long period of time.
- the parallelism correcting means is constituted by the parallelism correcting mechanism 20 for applying a correcting force in the mold clamping direction to the mounting surface of the mold clamping mechanism, but is not limited thereto. Rather, the parallelism correction means is, for example, by applying a correction force in the direction orthogonal to the mold clamping direction to the side surface of the mold 10, ⁇ ⁇ by a jack mechanism or the like, so that the mold in the intermediate mold clamping state is provided. It may be configured to correct the parallelism between the molds # 0 and 11 to a high degree of parallelism.
- the case where the movable mold 10 is moved forward and backward with respect to the fixed mold 11 is described, but at least one of the molds 10 and 11 can be moved forward and backward. I just want to.
- the molten resin is injected into the molds 10 and 11 and then re-clamped to the final mold-clamped state. It may be a mold clamp.
- the injection compression molding apparatus of the present embodiment can be applied to any of a vertical system in which the mold clamping direction is a vertical direction and a horizontal system in which the mold clamping direction is a horizontal direction.
- it is a horizontal type.
- the horizontal type enables the parallelism of the mold to be adjusted with a lower force, and is superior in efficiency.
- the cylinder rod 22 a is moved forward and backward with respect to the positioning cylinder 22 of each parallelism correcting mechanism 20, and the holding pressure is set at an arbitrary holding pressure.
- Hydraulic oil setting part 30 that can supply and discharge hydraulic oil so as to hold it, and when uneven load occurs due to molten resin injected into molds 10 and ⁇ 1 at the intermediate mold clamping position, A parallelism correction mechanism that takes into account the uneven load of the molten resin by the control unit 60 that individually sets the holding pressure in the hydraulic pressure setting unit 30 so as to minimize the effect of parallelism during remolding. Since a holding pressure of 20 is set, high parallelism between the dies 10 and 11 can be reliably maintained even during re-clamping.
- the quality of the molded product can be further improved, and the occurrence of troubles such as digging of the molds 10 and 11 can be more reliably prevented.
- the holding pressure of the hydraulic pressure setting unit 30 is individually set.
- the present invention is not limited to this. May be set, or both the holding pressure and the discharge speed of the hydraulic oil may be individually set.
- the parallelism correcting mechanism 20 in the present embodiment is constituted by the positioning cylinders 22 provided at a plurality of locations between the mounting surfaces of the mold clamping mechanism and the contact mechanism 2 ⁇ , the contact mechanism The parallelism correcting mechanism 20 can be obtained with a simple configuration having a small number of parts of the cylinder rod 21 and the cylinder rod 22a.
- the contact mechanism 21 and the positioning cylinder 22 are mounted on the mounting surfaces of the movable-side common plate 9 and the fixed-side common plate 13 respectively.
- the present invention is not limited to this. Instead, the parallelism correction mechanism 20 in which the contact mechanism 21 and the positioning cylinder 22 are integrated in series may be mounted on one of the mounting surfaces of the common plates 9 and 13. .
- a minute position adjusting mechanism having a function may be provided, and the positioning cylinder 22 may be connected to the minute position adjusting mechanism to constitute the parallelism correcting mechanism 20.
- the parallelism correcting mechanism 20 in the present embodiment is configured such that the leading end of the contact mechanism 21 can be moved forward and backward by a micrometer mechanism, so that the leading end of the contact mechanism 21 can be reduced in the number of parts.
- the micrometer mechanism with a small and simple configuration enables highly accurate positioning at a desired position.
- the forward and backward movement of the tip of the contact mechanism 21 is not limited to the micrometer mechanism, but may be performed by a jack capable of controlling a minute position or a mechanism combining a ball screw and a servomotor.
- the molds 10 and ⁇ 1 and the parallelism correcting mechanism 20 are provided on the removable movable and fixed side common plates 9 and 13, the common plates 9 and 13 can be used. With a simple installation work, existing injection molding equipment can be converted to an injection compression molding equipment.
- the present invention provides an injection compression molding method using the above-mentioned injection compression molding apparatus.
- the molding conditions of this molding method can be appropriately set according to the intended molded product, but more desirable molding conditions and the like will be described below.
- the expansion ratio of the mold capacity in the intermediate mold clamping state is preferably 1.2 times or more, more preferably 1.3 times or more, and 1.4 times or more the target molded product volume. It is more preferably at least 1.5 times, particularly preferably at least 1.5 times.
- the effect of the present invention becomes more effective as the magnification is higher. However, if the magnification is too high, molding efficiency may decrease and molding defects such as jetting may occur, so the upper limit is 3 times or less. Is appropriate, and 2 times or less is more appropriate.
- the final mold clamping state is preferably such that the parting surfaces of the two dies 10 and 11 are not in contact with each other.
- molding is also possible, in such a molding method where the parting surfaces do not contact each other, This enables more uniform compression of the resin into the resin, and provides a molded product that is an injection compression molded product with a lower distortion by using a lower compression force (mold clamping force).
- a predetermined pressure is not applied to the resin, so that the molded product may have sink marks or the like, and the predetermined dimensional accuracy may not be achieved.
- the injection compression molding method of the present invention provides a movable mold in a final mold clamping state. It is possible to provide extremely high quality molded products by making the parting surfaces of the mold and the fixed mold not in contact with each other.
- the distance between the printing surfaces of the movable mold 10 and the fixed mold 11 in the final mold clamping state is preferably in the range of 0.05 to 1 mm.
- the pressure applied to the resin when compressing the resin in the mold is preferably in the range of 10 to 80 MPa, more preferably in the range of 12 to 50 MPa. , 13 to 35 MPa.
- a pressure in such a range to the resin, an injection compression molded article having low distortion and high thickness accuracy using a low mold clamping force is provided.
- the amount of movement of the mold from the intermediate mold clamping state to the final mold clamping state (hereinafter, sometimes referred to as a compression stroke) is preferably in the range of 1 to 4 mm, and 1 to 3 mm. The range of mm is more preferable.
- the thickness of the molded product is not particularly limited, but is preferably in the range of 0.5 to 10 mm, more preferably in the range of 1 to 7 mm.
- the molded product preferably has a gate on the side surface of the molded product.
- the injection compression molding method of the present invention has a high parallelism between the dies. To achieve such a solution.
- a molded product having a gate on the side surface of the molded product can be said to be a particularly suitable molded product in the present invention.
- the molded article preferably has a maximum projected area of 1000 cm 2 or more, and more preferably 2000 cm 2 or more.
- a molded article having a flow length of 30 cm or more is suitable for exhibiting the effects of the present invention, and more preferably 35 cm or more.c, while the upper limit of the flow length is 200 cm or less. Appropriate, ⁇ 80 cm or less is appropriate.
- thermoplastic resin used in the injection compression molding method of the present invention is not particularly limited, but is particularly suitable for a resin having a high melt viscosity, which tends to be insufficient in fluidity in injection molding of a large molded product.
- thermoplastic resin used in the injection compression molding method of the present invention includes a resin containing at least 20% by weight of the amorphous thermoplastic resin. It is suitable.
- a resin containing 20% by weight or more of an amorphous thermoplastic resin having a glass transition temperature (T g) of 100 ° C. or more can be preferably used.
- Amorphous thermoplastic resins often sacrificed other properties such as impact resistance and chemical resistance in order to ensure their fluidity, but this is not the case with the injection compression molding method of the present invention. Enables provision of large molded products without sacrificing characteristics.
- the proportion of the amorphous thermoplastic resin in the resin used for molding is more preferably at least 25% by weight, even more preferably at least 30% by weight.
- the glass transition temperature in the present invention was measured by a method specified in ISK 712.
- the amorphous thermoplastic resin for example, a styrene resin (polystyrene,
- polycarbonate resin AS resin, ABS resin, ASA resin, AES resin, etc.), acrylic resin (PMMA resin, etc.), polycarbonate resin, polyester polyester resin, polyphenylene oxide resin, polysulfone resin, polyethersulfone resin And polyarylate resins, cyclic polyolefin resins, polyetherimide resins, polyamideimide resins, polyimide resins, and polyaminobismaleimide resins. More preferably, among these, polycarbonate resins, polyarylate resins, and cyclic polyolefin resins which are excellent in moldability and can be applied to a wider range of fields can be exemplified. Among them, a polycarbonate resin having particularly excellent mechanical strength is preferable.
- the thermoplastic resin of the present invention has a viscosity average molecular weight of 12, 000 to 100, 000, more preferably 14, 000 to 35,
- the resin include a polycarbonate resin as a main component.
- the thermoplastic resin of the present invention includes a thermoplastic resin other than the above, an impact modifier, a thermosetting resin, a reinforced filler, a melt elasticity modifier, a flame retardant, a flame retardant auxiliary, a char forming compound, and a nucleus.
- a whitening agent, a phosphorescent pigment, a fluorescent dye, an infrared absorbing agent, a photochromic agent, a light diffusing agent, and a metallic agent can be added.
- the injection compression molding apparatus is suitably used for manufacturing a molded product of a transparent lens, an optical device component represented by a CD, a FD, and a precision device component.
- a transparent member for a vehicle, a vehicle outer panel, a vehicle interior material is suitably used due plate-shaped optical function molded article (the present invention using a low clamping force) It is possible to stably provide high-quality large-sized injection-molded products having low distortion and high thickness accuracy without practical problems, and in particular, to provide such molded products made of an amorphous thermoplastic resin having high heat resistance.
- Typical examples of such molded articles include transparent members for vehicles (glazing materials, headlamp lenses, solar cell covers, windshields, and instrument panels for displaying information, etc.). Materials such as front door windows, rear door windows, quarter windows, back windows, and back door windows, as well as sunroofs and roof panels, are suitable. Therefore, according to the present invention, there is provided an injection compression molding method capable of producing a favorable transparent member for a vehicle, and further, such a transparent member for a vehicle is provided.
- the transparent member for a vehicle a member provided with a layer such as a hard coat on the surface can be used.
- the molded article itself can be formed into a multilayer, but it is preferable to provide a single-layer transparent member for vehicles and to apply a surface treatment such as a hard coat to the molded article.
- a large-sized molded product for a vehicle outer panel which is also opaque and requires high appearance and low distortion, is suitably provided.
- a molded product in which a glazing material and a molded product of a vehicle outer plate are integrated can be provided.
- vehicle outer panel examples include a back panel, a fender, a door panel, a roof panel, and a trunk rail.
- Products in which these outer plates are integrated with windows such as front, side, rear, and roof can also be provided in the injection compression molding method of the present invention. It is possible to provide an injection compression molding method for molded articles.
- plate-shaped optical function molded products (Fresnel lens, light diffusion sheet, lenticular lens seed, prism sheet, lens array, etc.) which require extremely high transferability and low distortion are required. Can be provided without any practical problems.
- thermoplastic resin molded product having a gate on a side surface of the molded product having a thickness deviation of 50 m or less and a total projection area of 2000 cm 2 or more.
- the molded article which is the injection compression molded article of the present invention, further comprises various coatings (hard coat, water-repellent, oil-repellent coat, ultraviolet absorbing coat, infrared absorbing coat, abrasion resistant coat, and chipping resistant coat).
- these coatings can perform various surface treatments such as primer coating applied as necessary), painting, printing, and metallizing (painting, vapor deposition, etc.). .
- the molded article of the present invention can favorably perform these surface treatments even on a large-sized molded article.
- injection compression molding method of the present invention can be used in combination with other known molding methods.
- the molding method of the present invention includes gas assist injection molding, foam molding (including injection of supercritical fluid), insert molding, in-mold coating molding, rapid heating / cooling mold molding, and heat insulation mold molding. It can be used in combination with, for example, two-color molding, sandwich molding, and ultra-high-speed injection molding.
- the molded article was visually observed for (i) the presence or absence of a flow mark and (ii) presence or absence of sink marks. Table 1 shows the results.
- FIG. 7 shows an injection compression molded product molded in Example 1, and (a) is a front view. This front view is a view projected on the platen surface during molding. Therefore, this area becomes the maximum projected area.
- the gate is located below the molded product.
- (B) is a cross-sectional view taken along line AA, which is the center line ⁇ 11, and (c) is a cross-sectional view taken along line BB.
- the molded article is a rectangular molded article main body 101 when viewed from the front and a bottom surface of the molded article main body 101. It has a gate 103 protruding from one side of 112.
- the main body 101 of the molded article has a length of 55 cm in the longitudinal direction of the bottom surface 112, a length of 38 cm in the short direction, and a height of 1 cm.
- the molded article body ⁇ 0 1 has a trapezoidal gutter shape in longitudinal section, and is a side inclined so as to reduce the area from the surface composed of the bottom side peripheral line 112 to the upper surface 113. It has a peripheral surface 107.
- the ridge lines 102 at the four corners of the side peripheral surface 107 are in a curved state, and the ridge line 105 between the side peripheral surface 107 and the upper surface 113 is in a bent state. Also, on the center line 110 of the gate 103, the diameter
- a nozzle section 104 of a hot runner of 3 mm is formed.
- the thickness measurement point 1 10 on the flow end side is set on the center line 1 ⁇ ⁇ ⁇ ⁇ 1 on the upper surface 1 13 of the molded article main body 101, and the gate 10 3 A thickness measurement point 1 09 on the gate side is set on the center line 1 1 1.
- the thickness measurement point 110 on the flow end side is a position 2 cm from the ridgeline 105.
- the thickness measurement point 109 on the gate side is located 5 cm from the center of the nozzle portion # 04 of the hot runner.
- Observation is made by observing two polarizing plates in parallel in the vertical direction and the polarization planes are orthogonal. This was carried out by placing the molded article between the two polarizing plates.
- the light source for observation was a light source arranged below the lower polarizing plate.
- the observation was performed by visual observation from above the upper polarizing plate.
- the evaluation was made based on the color change of the stripe pattern, uneven density, and the presence or absence of uneven shading. Table 1 shows the results.
- the thickness of the molded article was measured using a micrometer at specific points on the gate side and the flow end side of the molded article, and the deviation of the thickness of the molded article was obtained. The measurement was performed on 30 molded articles, and the average value was obtained at each location. ⁇ In each case, the thickness variation did not become larger than the average value by 20 m or more.
- the thickness deviation was calculated as the difference from the original molded product thickness calculated from the mold dimensions and the molding shrinkage in the thickness direction. Table 1 shows the results. In Table 1, a ten sign indicates that the thickness of the molded product is thicker than a predetermined dimension, and a sign of-indicates that it is thinner than a predetermined dimension.
- Example 2 The molding of Example 2 shown below was performed with a target of continuous 2000 shots, and its continuous formability was evaluated. When stable continuous molding was possible, it was marked as ⁇ , and when continuous molding was difficult, it was marked as X. Table 2 shows the results. When the parallelism correction mechanism was not used, abnormal noise was generated from the mold at about 100 shots from the mold, and damage to the mold was predicted, so continuous molding could not be performed.
- PC-1 Polycarbonate resin powder of viscosity average molecular weight of 22,500 (pan light L-122,5WP, manufactured by Teijin Chemicals Limited) 99.87 weight Part and S andstab P—EPQ (manufactured by Sandoz (S andoz) Co.) 0.03 parts by weight and pentaerythritol tetrastearate 0.1 part by weight were mixed in a twin-screw extruder (( Co., Ltd. TEX- ⁇ , manufactured by Nippon Steel Works, screw diameter 30 mm), extruded at a screw rotation speed of 150 rpm, a cylinder temperature of 280 ° C, and a vent suction degree of 3 kPa. (The viscosity average molecular weight in the pellet was 22,400).
- PC-2 Aromatic polycarbonate resin (Panlite L-125 WP manufactured by Teijin Chemicals Ltd.) 30 parts by weight, PBT resin (Changchun Plastics Factory Co., Ltd. 21 parts by weight, 30 parts by weight, compatibilizer (Kuraray Co., Ltd.
- TKS-7300 10 parts by weight, talc (IMIF abi S.p.A, Hitalc Ultra 5 c) 25 5 parts by weight, styrene-based thermoplastic elastomer (Kuraray Co., Ltd., SEPTON 205) and 5 parts by weight, and phosphate-based heat stabilizer (Adeka Stab, manufactured by Asahi Denka Kogyo Co., Ltd.) 8) Extrusion was performed in substantially the same manner and under the same conditions as in Example 1 except that 0.2 parts by weight was uniformly mixed with a tumbler, and the vent suction degree was set to 3 OkPa to obtain a pellet.
- talc IMIF abi S.p.A, Hitalc Ultra 5 c
- styrene-based thermoplastic elastomer Kuraray Co., Ltd., SEPTON 205
- phosphate-based heat stabilizer Adeka Stab, manufactured by Asahi Denka Kogyo Co., Ltd.
- the molding machine After drying the above polycarbonate resin pellet PC-1 at 120 ° C for 5 hours with a hot air dryer, the molding machine has a cylinder diameter of 110 mm ⁇ and a clamping force of ⁇ 270 kN 1300 E-C5 injection molding machine (hydraulic circuit and control system were modified to enable mold compression). Further, parallelism correcting mechanisms 20 were installed at the four corners of the mold mounting plate as shown in FIG. The head member 24 was of a micrometer type. Parallelism preparation work was performed in the predetermined intermediate mold clamping state to secure parallelism during mold clamping.
- Still other molding conditions include an injection speed of 20 mm / sec, a period from the middle mold clamping state to the final mold clamping state of the mold: 2 seconds, and a period in which resin supply and mold clamping are performed simultaneously: 0.5 seconds, pressure applied to the resin in the mold (maximum pressure): 25 MPa, holding time at that pressure: 40 seconds, travel distance from the intermediate mold clamping state of the mold to the final mold clamping state (Forward stroke): 2 mm, Cooling time: 50 seconds.
- the parallelism was corrected by setting the necessary holding pressure of the parallelism correction mechanism based on the mold clamping position during molding and the amount of inclination of the mold in advance, and controlling the time according to the contents shown in Table 2. .
- Table 2 Table 2
- the first row in Table 2 shows the contact mechanism 21 (head member 24) and the positioning cylinder 22 (cylinder rod 22a). It shows the time (seconds) after the contact in one parallelism correction mechanism. Injection starts 3 seconds after such contact.
- the pressure applied to the resin in the mold was read from the value of the pressure sensor located at the center of the movable mold cavity surface. These values were almost the same as the set values of the mold clamping pressure.
- the movable mold parting surface was 0.3 mm away from the fixed mold parting surface in the final forward position, and there was no mold surface sticking.
- the runner used was a valve-gate type hot runner (diameter: 3 mm ⁇ ) manufactured by Moldmasters. Immediately, the valve gate was closed and the conditions were set such that the molten resin did not flow back from the gate to the cylinder due to mold compression.
- the molding cycle was about 120 seconds (there was a few seconds of variation because the molded product was taken out manually), and the obtained molded product had small residual strain and good appearance. Table 2 shows the evaluation results.
- Example 2 After drying the polycarbonate alloy resin pellet PC-2 at 120 ° C for 5 hours using a hot air dryer, the same apparatus as in Example 1 was used (with the parallelism correcting mechanism activated). A molded product (product area projected area: about 2100 cm 2 , thickness: about 3 mm) with the rear door of the car shown in Fig. 8 being about 1/2 scale was formed.
- FIG. 8 shows the above-mentioned molded article molded in Example 2, and (a) is a front view.
- the front view is a view projected on the platen surface during molding. Therefore, such an area becomes the maximum projected area.
- the gate is located below the molded product.
- (B) is a cross-sectional view taken along line C-C, which is the center line 131
- (c) is a cross-sectional view taken along line DD.
- the molded article is a rectangular molded article main body 121 in a front view and a bottom surface of the molded article main body 121.
- a gate 123 protruding from one side of the side peripheral line 132 is provided.
- the main body of the molded product ⁇ 21 has a bottom side peripheral line 13 2 of 55 cm in the long direction and a length of 38 cm in the short direction, and a height of 2 cm. Is set.
- the surface constituted by the bottom side peripheral line 1 32 of the molded article main body 1 2 1 Is formed in a convexly curved shape.
- the upper surface 13 3 of the molded article main body 1 2 1 is convex while reducing the area upward from the other side of the bottom side peripheral line 13 2 facing one side where the above-mentioned gate 12 3 is formed. It is formed in a curved shape.
- the top of the upper surface 133 and the bottom peripheral line 132 are connected via a flat inclined surface 127.
- the ridge line 122 at the corner of the inclined surface 127 is in a curved state, and the ridge line 125 between the inclined surface 127 and the upper surface 133 is in a bent state. I have.
- a nozzle section 124 of a hot runner having a diameter of 3 mm is formed on the center line 13 1 of the gate 123.
- a flow measuring end side thickness measurement point 130 is set on a center line 13 1 on the upper surface 13 3 of the molded article body 12 ′′ I, and a gate 1
- the thickness measurement point 1 29 on the gate side is set on the center line 1 3 1 in 23.
- the thickness measurement point 130 on the flow end side is located 6.5 cm from the bottom peripheral line 13 2.
- the thickness measurement point 12 9 on the gate side is located 5 cm from the center of the nozzle portion 124 of the hot runner.
- the above molded product has a gate on the side of the molded product, and has a cylinder temperature of 270 ° C, a hot runner temperature of 290 ° C, a mold temperature of 120 ° C, and a filling time of 5 ° C. Injection compression molding was performed in 5 seconds.
- Still other molding conditions include an injection speed of 20 mm / sec, a period from the middle mold clamping state to the final mold clamping state of the mold: 2 seconds, and a period in which resin supply and mold clamping are performed simultaneously: 0.5 seconds, pressure applied to the resin in the mold (maximum pressure): 30 MPa, holding time at that pressure: 40 seconds, travel distance from the intermediate mold clamping state of the mold to the final mold clamping state (Stroke of advance): 2 mm, Cooling time: 45 seconds.
- Example 3 Injection compression molding was performed under the same conditions as in Example 2 except that the parallelism correcting mechanism was not operated and the parallelism was not corrected. The evaluation results are shown in Table 1 c (Example 3)
- Example 2 After drying the above polycarbonate resin pellet PC _ 1 with a hot air drier at 120 ° C for 5 hours, the same apparatus as in Example 1 was used (with the parallelism correcting mechanism activated). ), A Fresnel lens (product area projected area: about 110 cm 2 , thickness: 0.7 mm) having a height of about 25 m of the convex part.
- the molding conditions were a cylinder single temperature of 310 ° C and a hot runner temperature of 320 ° C. Further, while the mold temperature was set at 100 ° C., rapid heating / cooling mold molding was performed in the following manner.
- the filling of the resin was completed under the condition that the cavity in the mold was rapidly heated to a maximum temperature of 200 ° C by a heating heater system, and then the chiller unit was used in the cooling process Then, the mold was rapidly cooled through a refrigerant at about 10 ° C. The filling time was 2.5 seconds. Other conditions were almost the same as in Example 2.
- the obtained molded article had a small residual distortion and had good luminance.
- the molten resin can be substantially uniformly filled in the mold by correcting the gap between the molds in the intermediate mold clamping state to high parallelism by the parallelism correcting means. .
- the mold when the mold is re-clamped from the intermediate mold-clamped state to the final mold-clamped state, the molten resin in the mold can be substantially uniformly compressed. Therefore, the residual stress can be made sufficiently small to obtain a high quality molded product. Also, when re-clamping from the intermediate clamping state, a high degree of parallelism is maintained between the dies, so that defects such as biting and breakage between the dies can be reliably prevented.
- the parallelism between the dies in the intermediate clamping state is always maintained at a high parallelism by the parallelism correction means, so that high quality molded products Can be manufactured over a long period of time.
- a hydraulic pressure setting unit capable of supplying and discharging hydraulic oil so as to move a cylinder rod forward and backward with respect to a positioning cylinder of each of the parallelism correcting mechanisms and hold the cylinder rod at an arbitrary holding pressure
- the hydraulic pressure setting unit is configured to minimize the influence of parallelism at the time of re-clamping due to the uneven load.
- the quality of the molded product can be further improved, and the occurrence of defects such as tooling of the mold can be more reliably prevented.
- the injection compression molded product is a transparent member for a vehicle, it is possible to replace the transparent member made of conventional glass with resin.
- a novel glazing that has good impact resistance, is lightweight, has a very small curvature or has an aesthetically rich three-dimensional surface structure that can have an edge.
- the material can be provided with practically no problem with low distortion and high thickness accuracy.
- the injection compression molded product is a vehicle skin, it will be possible to form a larger vehicle skin than before. Therefore, take many conventional molded products
- the injection compression molded product is a plate-shaped optical function molded product
- a plate-shaped optical function molded product such as a Fresnel lens that requires extremely high transferability and low distortion can be provided without practical problems.
- the injection molded product is a thermoplastic resin molded product having a thickness deviation within 50 m and a total projected area of not less than 2000 cm 2 and a gate on the side surface of the molded product, the distortion is small. It is possible to provide high-quality, large-sized molded products with high thickness accuracy.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE10294862T DE10294862B4 (de) | 2001-05-31 | 2002-05-31 | Spritzprägevorrichtung, Spritzprägeverfahren, und Spritzprägeformerzeugnis, das durch selbiges Verfahren herstellbar ist. |
US10/380,967 US7041247B2 (en) | 2001-05-31 | 2002-05-31 | Injection and compression molding with parallelism mechanism |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2001-163677 | 2001-05-31 | ||
JP2001163677 | 2001-05-31 | ||
JP2002128740A JP3942945B2 (ja) | 2001-05-31 | 2002-04-30 | 射出圧縮成形装置、射出圧縮成形方法およびその方法による射出圧縮成形品 |
JP2002-128740 | 2002-04-30 |
Publications (1)
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WO2002096616A1 true WO2002096616A1 (fr) | 2002-12-05 |
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ID=26616037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2002/005329 WO2002096616A1 (fr) | 2001-05-31 | 2002-05-31 | Machine de moulage par injection et compression, procede de moulage par injection et compression, produit moule par injection et compression selon ce procede et produit forme en resine thermoplastique |
Country Status (5)
Country | Link |
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US (1) | US7041247B2 (ja) |
JP (1) | JP3942945B2 (ja) |
CN (1) | CN1301844C (ja) |
DE (1) | DE10294862B4 (ja) |
WO (1) | WO2002096616A1 (ja) |
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JPH03221424A (ja) * | 1990-01-26 | 1991-09-30 | Komatsu Ltd | インジェクションプレス成形の金型装置およびその成形方法 |
JPH05269751A (ja) * | 1992-03-26 | 1993-10-19 | Komatsu Ltd | 型締装置およびその制御方法 |
JP2001047484A (ja) * | 1999-08-10 | 2001-02-20 | Honda Motor Co Ltd | 射出圧縮成形装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2004016411A1 (de) * | 2002-07-24 | 2004-02-26 | Franz Josef Summerer | Vorrichtung zum ausgleichen von beim spritzprägen auftretenden kippkräften und verfahren zum herstellen von kunststoff-formteilen |
JP2018024180A (ja) * | 2016-08-10 | 2018-02-15 | 株式会社名機製作所 | 圧縮成形機、圧縮成形機の制御方法および圧縮成形機の成形方法 |
CN109049592A (zh) * | 2018-09-21 | 2018-12-21 | 宁波力劲机械有限公司 | 一种多物料注塑机模板平行度补偿控制系统 |
CN109049592B (zh) * | 2018-09-21 | 2023-09-15 | 宁波力劲塑机智造有限公司 | 一种多物料注塑机模板平行度补偿控制系统 |
Also Published As
Publication number | Publication date |
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US7041247B2 (en) | 2006-05-09 |
US20040012122A1 (en) | 2004-01-22 |
DE10294862B4 (de) | 2010-07-22 |
JP3942945B2 (ja) | 2007-07-11 |
JP2003048241A (ja) | 2003-02-18 |
CN1464831A (zh) | 2003-12-31 |
DE10294862T1 (de) | 2003-12-04 |
CN1301844C (zh) | 2007-02-28 |
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