JP4880045B2 - Clamping device for composite molding and molding method of composite molded product - Google Patents

Description

The present invention relates to a mold clamping device including a mold device including a first mold portion, a second mold portion, and a movable mold portion, and a molding method for molding a composite molded article using the mold clamping device including the mold device.

  As a method and a mold apparatus for injection molding of a composite product made of a different material resin, there are a composite product injection molding method and a composite product injection mold apparatus (for example, see Patent Document 1). In Patent Document 1, a primary molding part is primarily molded by a primary mold part, and the movable mold holding the primary molding part is replaced with a movable mold of a secondary mold part, thereby inserting the primary molding part. The secondary molding part is secondary-molded by the secondary mold part, and the primary molding and secondary molding proceed simultaneously.

  According to the injection molding method and the mold apparatus of Patent Document 1, since the mold is arranged in parallel with the fixed platen and the movable platen, a large fixed platen and the movable platen are required, and the shape of the injection molding machine becomes larger. Therefore, it is not suitable for molding large molded products. Furthermore, it is necessary to perform compression molding to mold a large, thin plate-shaped molded product such as a transparent member for a vehicle so that the plate thickness has high accuracy without deviation. However, according to the technique of the above-mentioned Patent Document 1, the primary molding and the secondary molding can be performed simultaneously and only under the same conditions. Therefore, compression molding is performed individually in each mold apparatus. It is virtually impossible to do. In particular, compression molding is indispensable for molding a thin window portion to be primary molded such as a transparent member for vehicles, but compression molding is required to mold a frame portion on the outer periphery of the window to be secondary molding. The molding method disclosed in Patent Document 1 cannot be applied to composite molding that does not.

  There is also an apparatus for producing an injection-molded article made of at least two plastic melts (for example, see Patent Document 2). The above-mentioned patent document 2 is arranged between a stationary mold clamping plate fixedly attached to a machine frame and a stationary mold clamping plate and a counter pressure plate fixedly mounted on the machine frame so as to be substantially horizontal. Pivots about a rotational axis movable relative to the mold clamping plate and oriented perpendicular to the longitudinal axis of the beam between the mold clamping plate movable along at least four transverse beams extending Another mold clamping device is possible, the mold clamping device being mounted on at least two sides spaced apart from each other and parallel to the axis of rotation on the mold half of the mold clamping plate. Each mold clamping plate has at least one opening through which the plastic deformation and injection unit is held by the mold clamping plate. One young in the mold half Ku is of the type adapted to be connected to a plurality of injection passages. The mold halves are loaded with one or more plastic melts simultaneously or directly successively from the injection units connected to the respective mold halves. Therefore, according to Patent Document 2, since the mold halves are arranged on the same axis, the problem of increasing the size of the injection molding machine in Patent Document 1 is solved, but compression molding is impossible. The problem is not solved.

JP 2002-225078 A JP-A-11-105072

The present invention has been made to solve the above problems, and provides a molding method of a composite molded product that can be compression molded without requiring a large-sized injection molding machine and a mold clamping device used therefor. Objective.

That is, the invention of claim 1 is a mold-clamping apparatus for composite molding to which a mold apparatus for composite molding comprising a first mold part, a second mold part and a movable mold part is attached, wherein the first mold part A fixed platen to which the second mold part is attached, a mold opening / closing device for moving the movable plate toward or away from the fixed plate, and the mold device provided separately from the mold opening / closing device. Four hydraulic pressures in which a rod forms a tie bar having a pressure chamber for supplying pressure oil for pressing and a release chamber for supplying pressure oil for separating the movable plate from the fixed platen and a clamping device comprising a cylinder, said movable mold part is movable in rotation and switchgear direction along a vertical axis during the previous SL stationary platen and said movable platen, said first together they are replaced capable mold mating between the the mold part second mold part, Kura Engaged detachably provided by Pas, when performing primary molding between the said movable mold section and the first mold section performs secondary molding between the movable mold portion and said second mold section Alternatively, when primary molding is performed between the second mold part and the movable mold part, secondary molding is performed between the first mold part and the movable mold part, and the first mold part or In a state where any one of the second mold parts and the movable mold part are engaged by the clamper, pressure oil is supplied to the open chamber of the pressing device, and the first mold part or The mold is released between the other mold part of the second mold part and the movable mold part, and then the engagement of the clamper is released to determine which of the first mold part or the second mold part. The present invention relates to a mold-clamping apparatus for composite molding , wherein the mold part is separated from the movable mold part .

According to a second aspect of the present invention, in the first aspect of the invention, one of the primary molding and the secondary molding relates to a mold-clamping apparatus for composite molding performed by compression molding for reducing the volume of the cavity.

According to a third aspect of the present invention, in the second aspect of the invention, the movable mold portion is melted in a cavity between the first mold portion and the movable mold portion in a state where the movable mold portion is fixed to the second mold portion by the clamper. The present invention relates to a mold-clamping apparatus for composite molding in which material is injected and compression molding is performed.

According to a fourth aspect of the present invention, there is provided a movable mold part that can be rotated by a rotation / movement device and moved in the mold opening / closing direction between a first mold part attached to the fixed platen and a second mold part attached to the movable platen. provided, wherein the first mold portion and the primary molding a primary molded article, wherein the movable mold part which has been die matching the second mold part of the movable mold unit holding the primary molded product and vertical after replacement by rotating along an axis, said primary molded article to a method of molding a composite molded article which secondary molding a secondary molded article by the second mold part which is insert, the first mold member A fixed platen to which the second mold part is attached, a mold opening / closing device for moving the movable plate toward or away from the fixed plate, and the mold device provided separately from the mold opening / closing device. The pressure chamber and the movable platen to which the pressure oil for clamping is supplied from the fixed platen The primary molding is performed using a mold clamping device including a pressure clamping device including four hydraulic cylinders each having an open chamber to which pressure oil for separation is supplied and a rod forming a tie bar. Secondary molding is performed, and either one of the first mold part or the second mold part and the movable mold part are engaged with each other by a clamper. To separate the movable platen from the fixed platen, thereby releasing the mold between the other mold part of the first mold part or the second mold part and the movable mold part, and then And releasing the clamper to release the mold from either one of the first mold part or the second mold part and the movable mold part. Related to the method.

According to a fifth aspect of the present invention, in the invention of the fourth aspect , any one of the primary molding and the secondary molding relates to a molding method of a composite molded product performed by compression molding for reducing the volume of a cavity.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, when the compression molding is performed, a plurality of pressing devices are controlled so that the movable mold part and the first mold part or the second mold part are parallel to each other. The present invention relates to a molding method of a composite molded article that is maintained and compression controlled.

The invention of claim 1 is a mold-clamping apparatus for composite molding to which a mold apparatus for composite molding comprising a first mold part, a second mold part and a movable mold part is attached, wherein the first mold part is attached A fixed plate, a movable plate to which the second mold part is attached, a mold opening / closing device for moving the movable plate toward or away from the fixed plate, and a mold opening / closing device provided separately from the mold opening / closing device. From four hydraulic cylinders, each having a pressure chamber for supplying pressure oil for tightening and an open chamber for supplying pressure oil for separating the movable plate from the fixed platen, and a rod forming a tie bar comprising a clamping apparatus, the movable mold part is movable along a vertical axis to the rotation and type opening and closing direction between the front Symbol stationary platen and said movable platen, said first mold section together are replaced capable mold mating between said second mold part, the clamper Detachably provided, in the case of performing the primary molding between the said movable mold section and the first mold section performs secondary molding between said second mold part and the movable mold part, or the When primary molding is performed between the second mold part and the movable mold part, secondary molding is performed between the first mold part and the movable mold part, and the first mold part or the second mold part is performed. In a state where any one mold part of the mold part and the movable mold part are engaged by the clamper, pressure oil is supplied to the open chamber of the pressing device, and the first mold part or the second mold part is supplied. The mold part is released from the other mold part and the movable mold part, and then the engagement of the clamper is released to either the first mold part or the second mold part. to release between the mold part and the movable mold section, the effective implementation of the molding without requiring a large-sized injection molding machine in a mold clamping apparatus for a composite molded Thereby releasing the molded article from the mold portion to be.

In the invention of claim 2, in the invention of claim 1 , since either the primary molding or the secondary molding is performed by compression molding that reduces the volume of the cavity, it is low in the mold clamping device for composite molding. Strain composite moldings can be molded.

According to a third aspect of the present invention, in the second aspect of the invention, the movable mold portion is melted in a cavity between the first mold portion and the movable mold portion in a state where the movable mold portion is fixed to the second mold portion by the clamper. Since the material is injected and compression molding is performed, the compression molding can be effectively performed in the cavity between the first mold part and the movable mold part.

According to a fourth aspect of the present invention, there is provided a movable mold part that can be rotated by a rotation / movement device and moved in the mold opening / closing direction between a first mold part attached to the fixed platen and a second mold part attached to the movable platen. provided, wherein the first mold portion and the primary molding a primary molded article, wherein the movable mold part which has been die matching the second mold part of the movable mold unit holding the primary molded product and vertical after replacement by rotating along an axis, said primary molded article to a method of molding a composite molded article which secondary molding a secondary molded article by the second mold part which is insert, the first mold member A fixed platen to which the second mold part is attached, a mold opening / closing device for moving the movable plate toward or away from the fixed plate, and the mold device provided separately from the mold opening / closing device. The pressure chamber and the movable platen to which the pressure oil for clamping is supplied from the fixed platen The primary molding is performed using a mold clamping device including a pressure clamping device including four hydraulic cylinders each having an open chamber to which pressure oil for separation is supplied and a rod forming a tie bar. Secondary molding is performed, and either one of the first mold part or the second mold part and the movable mold part are engaged with each other by a clamper. To separate the movable platen from the fixed platen, thereby releasing the mold between the other mold part of the first mold part or the second mold part and the movable mold part, and then In order to release the clamper and release the mold from either the first mold part or the second mold part and the movable mold part , a large injection molding machine is required. this to release the molded product from the mold unit it is possible to effectively implement the composite molded without Can.

According to a fifth aspect of the present invention, in the invention of the fourth aspect , any one of the primary molding and the secondary molding is performed by compression molding that reduces the volume of the cavity. Can be molded.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, when the compression molding is performed, a plurality of pressing devices are controlled so that the movable mold part and the first mold part or the second mold part are parallel to each other. Since the compression control is performed while maintaining it, it is possible to mold a composite molded product having a uniform plate thickness and high accuracy.

It is a longitudinal cross-sectional view of the clamping apparatus which shows the state at the time of a movable mold | type rotating after a primary shaping | molding, and starting a secondary shaping | molding. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which the mold closed for secondary shaping | molding. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which mold closing is completed and it is preparing for mold clamping. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which clamps a metal mold | die and is injecting secondary molding. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which opened the metal mold | die for primary molding and is preparing for compression molding. It is a longitudinal cross-sectional view of the mold clamping device which shows the state which is injecting primary molding. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which is performing the compression molding of primary molding. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which has performed mold release of primary molding. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which has performed mold release of secondary shaping | molding. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which is mold-opening. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state which has taken out the secondary molded product. It is a longitudinal cross-sectional view of the mold clamping apparatus which shows the state before the primary shaping | molding and secondary shaping | molding are complete | finished and a movable mold part rotates. It is a side view of the metal mold apparatus which shows the state clamped.

  The mold clamping device 10 constitutes an injection molding machine together with the first injection device 11 and the second injection device 12. The mold clamping device 10 includes a stationary platen 21 for mounting the first mold part 13, a movable platen 22 for attaching the second mold part 15 to the fixed platen 21, and a space between the first mold part 13 and the second mold part 15. The movable mold part 14 that can be rotated and moved in the mold opening / closing direction by the rotation / movement device 17, the pressure clamping device 19 that is provided in the vicinity of the four corners of the movable plate 22, such as a hydraulic cylinder device, and the hydraulic cylinder of the pressure clamping device 19 The tie bar 23 formed by extending the rod of the apparatus, and provided at the four corners of the fixed platen 21 on the extension of the tie bar 23, provided at the opening of the through-hole passing through the fixed plate 21 side end of the tie bar 23. The engagement device 20 and a mold opening / closing device 18 including a hydraulic cylinder device and the like that are provided in a pair on the upper and lower surfaces or front and back side surfaces of the fixed platen 21 and move the movable platen 22 toward and away from the fixed platen 21.

  A mold apparatus 16 is constituted by the first mold part 13, the movable mold part 14, and the second mold part 15. As shown in FIG. 13, the mold apparatus 16 has a first clamper 25 and a second clamper 26. The first clamper 25 includes a mounting seat 44 that is fixedly projecting from the first mold portion 13 toward the movable mold portion 14 on the mold-matching surface of the first mold portion 13 with the movable mold portion 14, and a through angle of the mounting seat 44. A wedge 41 slidable in the hole, a groove 40 provided on the upper and lower end surfaces of the movable mold portion 14 so as to be engaged with the wedge 41, and an end opposite to the end engaged with the groove 40 of the wedge 41 And a second hydraulic cylinder device 42 provided between both ends of the connecting rod 43 and the mounting seat 44. The first clamper 25 is designed such that when the hydraulic cylinder device 42 is operated and the wedge 41 is engaged with the groove 40, a gap G is generated on the die matching surface between the first mold part 13 and the movable mold part 14. Yes. Further, the second clamper 26 includes a mounting seat 45 that is fixedly projected and fixed to the movable mold portion 14 side from the second mold portion 15 on the mold matching surface of the second mold portion 15 with the movable mold portion 14. The wedge 41 slidable in the through-angle hole, the groove 40 provided on the upper and lower end surfaces of the movable mold portion 14 so as to engage with the wedge 41, and the end portion of the wedge 41 engaged with the groove 40 are opposite to each other. The connecting rod 43 is fixed to the end portion, and two hydraulic cylinder devices 42 are provided between both ends of the connecting rod 43 and the mounting seat 44. The second clamper 26 is designed such that when the hydraulic cylinder device 42 is operated and the wedge 41 is engaged with the groove 40, the mold matching surfaces of the second mold part 15 and the movable mold part 14 are in close contact with each other. In the mold device 16, the first clamper 25 and the second clamper 26 are arranged as described above in order to perform compression molding in the first mold part 13, but compression molding in the second mold part 15. It is also possible to perform. In that case, the arrangement positions of the first clamper and the second clamper are opposite to the above.

  Here, the composite molded product molded by the mold apparatus 16 will be described. Composite molded products include, for example, plastic window glass, headlamp lenses and meter covers such as buildings, vehicles (automobiles, railways, etc.), ships and airplanes, transparent members for vehicles, illumination lamp covers, solar cell covers, etc. Or for solar cell substrates, display panel parts such as liquid crystal, plasma, and organic EL (diffusion plate, diffusion film, lens film, cover film, light guide plate, prism lens, Fresnel lens, etc.), and game machines (pachinko machine, etc.) Examples include parts. Transparent materials for vehicles include resin window glass (front window, rear window, back door window, front / rear side window, front / rear quarter window, etc.), headlamp lens, rear lamp lens, front bumper / front grill, garnish, and resin. Body (fenders, doors, tailgate, etc.) and interior parts such as sunroofs, panoramic roofs, detachable tops, window reflectors, turn signal lamp lenses, meter covers, room lamp lenses, and display display front panels Parts and the like are exemplified. Here, the transparent member for a vehicle is a thin plate-like window portion made of a transparent thermoplastic resin, for example, a transparent polycarbonate resin, a mounting portion to the vehicle, a design portion, a shielding portion, an illumination portion, a mechanism member, Colored thermoplastic resin that is joint-molded with the window to form a module with a lighting member, for example, colored polycarbonate resin, alloy resin of polycarbonate resin and other resin (polyester resin, etc.) or heat It consists of frame parts, such as a plastic elastomer. Also for parts other than transparent members for vehicles, attachment parts, design parts, shielding parts, illumination parts, mechanism members, lighting members, etc. of thin plate-like surface layer parts made of thermoplastic resin such as polycarbonate resin Thermoplastic resins that are bonded and molded with the above-mentioned parts, such as optically transparent polycarbonate resin, light diffusion polycarbonate resin, polycarbonate resin and other resins (polyester resin, ABS resin, etc.) And a back layer portion such as an alloy resin or a thermoplastic elastomer. As described above, many composite molded products are composed of combinations of different materials, but nevertheless, they may be composed of the same material in order to increase the volume and area of the molded product. For example, compression molding is preferably applied to molding of a molded product that is thin and dislikes distortion as represented by a window portion of a transparent member for vehicles.

  Next, based on FIGS. 1-12, the molding method of the secondary molded product 30 which is a composite molded product will be described in detail in the order of steps together with the operation of the mold clamping device 10. Note that the first clamper 25 and the second clamper 26 described in FIGS. 1 to 12 are shown in shapes different from those described in FIG. The shapes of the first clamper 25 and the second clamper 26 described in FIGS. 1 to 12 are symbolically shown so that the functions can be easily understood. Further, when the clamper is in an engaged state, the inside thereof is blackened. It is filled and displayed. FIG. 1 shows a state before the primary molded product 29 molded by the first mold part 13 in the previous molding cycle is inserted into the second mold part 15 as the movable mold part 14 rotates. This is the starting point of the molding cycle. In this process, all actuators are neutral and not operating.

  2 shows a process in which the mold clamping device 10 is in the process of closing the mold, and the movable mold part 14 approaches the first mold part 13 by the rotating / moving device 17, and the primary molded product 29 of the movable mold part 14 is moved. The core part on the side that is not held is matched with the first mold part 13 to form the first cavity 35. At the same time, pressure oil is supplied to the mold closing chamber 31 of the mold opening / closing device 18 to bring the movable plate 22 closer to the fixed plate 21. In order to facilitate understanding of this situation, the mold closing chamber 31 is shaded and displayed as shown in FIG. Hereinafter, the operations of the other hydraulic cylinder devices are similarly expressed.

  In FIG. 3, the movable platen 22 is moved by the mold opening / closing device 18, and the second mold part 15 is mold-matched with the core part on the side where the primary molded product 29 of the movable mold part 14 is held. The product 29 is inserted into the second mold part 15, and a space other than the region occupied by the insertion of the primary molded product 29 of the second mold part 15 is formed as the second cavity 36. At this time, the hydraulic cylinder device 42 of the second clamper 26 of the mold device 16 is actuated to engage the wedge 41 with the groove 40, and the movable mold portion 14 and the second mold portion 15 are brought into close contact with each other. Further, at this time, the four tie bars 23 are inserted through the through-holes of the fixed platen 21, and the engaging grooves 24 provided at the tip of the tie bar 23 are engaged with the protruding pins of the engaging device 20.

  In FIG. 4, pressure oil is supplied to the pressure chambers 33 of the four pressure devices 19 to clamp the mold device 16. Then, after the second injection device 12 is advanced and the nozzle is brought into contact with the second sprue bush 28 communicating with the second cavity 36 of the second mold part 15, the second injection device 12 is moved to the second cavity 36. Injection and filling with molten material. This process is secondary molding.

  In FIG. 5, a process of stopping the supply of pressure oil to the mold closing chamber 31 of the mold opening / closing device 18 and supplying pressure oil to the opening chamber 34 of the clamping device 19 to separate the movable plate 22 from the fixed platen 21 is performed. Show. Thereby, since the movable mold part 14 is fixed to the second mold part 15 by the second clamper 26, the movable mold part 14 is separated from the first mold part 13 by a predetermined distance, and the volume of the first cavity 35 is increased. Is done. At this time, it is preferable that the movement of the movable mold part 14 is performed in parallel with the mold-matching surfaces of the movable mold part 14 and the first mold part 13 in order to favorably perform compression molding of a thin plate-shaped molded product. . Although not shown, the means for realizing such parallel control is as follows. That is, a servo valve is connected to the pressing chamber 33 and the open chamber 34 of each pressing device 19, and a sensor for measuring the distance between the fixed platen 21 and the movable platen 22 is provided in the vicinity of each pressing device 19. Each servo valve is feedback-controlled so that the measured value of each sensor coincides with the set predetermined value.

  In FIG. 6, the first injection device 11 is moved forward and the nozzle is brought into contact with the first sprue bush 27 communicating with the first cavity 35 of the first mold portion 13, and then enlarged by a predetermined amount by the parallel control. The molten material is injected from the first injection device 11 into the first cavity 35 that is positioned and held. This process is the primary molding, and is performed at a different time from the secondary molding and in a separate process that is not continuous with the primary molding.

  In FIG. 7, compression molding is performed as a process of continuing primary molding. In the compression molding, the molten material injected into the first cavity 35 enlarged in FIG. 6 is compressed by the four pressing devices 19 to reduce the volume of the first cavity 35, and the molten material is compressed in the first cavity 35. This is performed by filling the first cavity 35 by spreading. And the primary molded product 29 is shape | molded. At this time, since the movable mold part 14 is fixed to and integrated with the second mold part 15 by the second clamper 26, the parallel control by the four pressing devices 19 is performed directly on the first mold part 13. Acts effectively. As a result, the molten material flows in the first cavity 35 at high speed and evenly, so that the first molded product 29 has low distortion as an effect of compression molding, and the plate thickness is uniform and highly accurate as an effect of parallel control. Become.

  In FIG. 8, the mold release process from the 1st type | mold part 13 of the primary molded article 29 is performed by the operation | movement similar to FIG.

  In FIG. 9, the first clamper 25 is operated to engage the first mold part 13 and the movable mold part 14 with a gap G therebetween, and the engagement of the second clamper 26 is released. Then, by supplying pressure oil to the open chamber 34 of the clamping device 19, a larger mold opening force than that generated by the mold opening / closing device 18 is generated, and the secondary molded product 30 is released from the movable mold part 14.

  In FIG. 10, the engagement of the first clamper 25 is released, and the protruding pin protruding from the engaging device 20 is retracted to release the engagement between the tie bar 23 and the stationary platen 21. Then, the supply of the pressure oil to the open chamber 34 is stopped, and the supply of the pressure oil to the mold opening chamber 32 of the mold opening / closing device 18 is started. Thereby, the movable platen 22 is opened to a predetermined position. At the same time, the movable mold part 14 is separated from the first mold part 13 by the rotating / moving device 17.

  In FIG. 11, after the mold opening process of the movable platen 22 is completed and the movable platen 22 stops at a predetermined position, the secondary molded product 30 is moved to the second mold part 15 by an ejector device (not shown) provided on the movable platen 22. The secondary molded product 30 is taken out.

  FIG. 12 shows a state where the primary molding and the secondary molding are finished and the movable mold part 14 is rotated, and one molding cycle is finished. Thereafter, the movable mold part 14 is rotated by 180 degrees, and the process is continued as shown in FIG.

  In addition, this invention includes what can be implemented in the aspect which added various change, correction, improvement, etc. based on the knowledge of those skilled in the art. Further, it goes without saying that any of the embodiments to which the above-mentioned changes are added is included in the scope of the present invention without departing from the gist of the present invention. For example, it has been described that primary molding is performed at the first mold part and secondary molding is performed at the second mold part, but primary molding can be performed at the second mold part and secondary molding can be performed at the first mold part. Is clear. Further, although the embodiment has been described in which the primary molding is performed by compression molding and the secondary molding is performed by injection molding other than compression molding, the primary molding is performed by injection molding other than compression molding and the secondary molding is performed by compression molding. It can also be. Of course, compression can be performed by primary molding, compression molding can be performed by using an in-mold compression device or the like in secondary molding, and compression molding can be performed by using an in-mold compression device or the like by primary molding, and secondary molding can be performed by compression molding. It goes without saying that you can make it happen.

DESCRIPTION OF SYMBOLS 10 Clamping apparatus 11 1st injection apparatus 12 2nd injection apparatus 13 1st mold part 14 Movable mold part 15 2nd mold part 16 Mold 18 Mold opening / closing device 19 Clamping apparatus 21 Fixed board 22 Movable board 25 1st clamper 26 Second clamper 29 Primary molded product 30 Secondary molded product 35 First cavity 36 Second cavity G Gap

Claims (6)

A mold-clamping apparatus for composite molding to which a mold apparatus for composite molding composed of a first mold part, a second mold part and a movable mold part is attached,
A fixed platen to which the first mold part is attached, a movable platen to which the second mold part is attached, a mold opening / closing device for moving the movable plate toward or away from the fixed platen, and the mold opening / closing device are provided separately A rod having a tie bar having a pressure chamber for supplying pressure oil for pressing the mold apparatus and an open chamber for supplying pressure oil for separating the movable plate from the fixed plate. A clamping device comprising four hydraulic cylinders,
The movable mold part is pre-Symbol provided movably in rotation and switchgear direction along a vertical axis between the stationary platen and the movable platen, and the second mold part and the first mold member The molds can be interchanged between each other , and can be attached and detached freely by a clamper .
When primary molding is performed between the first mold part and the movable mold part, secondary molding is performed between the second mold part and the movable mold part, or the second mold part and the movable mold part. When primary molding is performed with the movable mold part, secondary molding is performed between the first mold part and the movable mold part,
Supplying pressure oil to the open chamber of the pressure clamping device in a state where either one of the first mold part or the second mold part and the movable mold part are engaged by the clamper, The mold part between the other mold part of the first mold part or the second mold part and the movable mold part is released, and thereafter, the engagement of the clamper is released and the first mold part or the A mold-clamping apparatus for composite molding , wherein any one of the second mold parts and the movable mold part are separated from each other. 2. The mold clamping device for composite molding according to claim 1 , wherein one of primary molding and secondary molding is performed by compression molding for reducing the volume of the cavity. In a state in which the movable mold part is fixed to said second mold portion by the clamper, cavity and injecting a molten material between the movable mold part and the first mold portion, according to claim 2 for compression molding Clamping device for composite molding. Between the first mold part attached to the fixed platen and the second mold part attached to the movable platen, there is provided a movable mold part that can be rotated by the rotating / moving device and moved in the mold opening / closing direction.
Said the first mold portion and the primary molding a primary molded product, the primary molded article wherein the movable mold part and the vertical axis the movable mold portion has been die matching the second mold part that holds the after replacement rotated along, the primary molded article to a method of molding a composite molded article which secondary molding a secondary molded article by the second mold part inserted,
A fixed platen to which the first mold part is attached, a movable platen to which the second mold part is attached, a mold opening / closing device for moving the movable plate toward or away from the fixed platen, and the mold opening / closing device are provided separately A rod having a tie bar having a pressure chamber for supplying pressure oil for pressing the mold apparatus and an open chamber for supplying pressure oil for separating the movable plate from the fixed plate. Performing the primary molding and the secondary molding using a mold clamping device including a pressure clamping device including four hydraulic cylinders,
With either one of the first mold part or the second mold part and the movable mold part engaged with each other by a clamper, pressure oil is supplied to an open chamber of the pressing device to move the movable part. By separating the plate from the fixed plate, the mold part between the other mold part of the first mold part or the second mold part and the movable mold part is released, and then the clamper is engaged. And releasing the mold between one of the first mold part and the second mold part and the movable mold part . The method for molding a composite molded article according to claim 4 , wherein one of the primary molding and the secondary molding is performed by compression molding for reducing a volume of a cavity. 6. The composite molded product according to claim 5 , wherein when performing the compression molding, a plurality of pressing devices are controlled to control the compression while keeping the movable mold part and the first mold part or the second mold part in parallel. Molding method.

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