JP2007216531A - Compression-molding system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compression-molding system which can sufficiently precisely position synthetic resins (58 and 158) which are made to drop from cutting/holding means (60 and 260) in a synthetic resin feeding device (6) at a specified area in the molding cavity (32) of female molds (20 and 120) of molding means (18, 118 and 218) in a compression-molding device (2). <P>SOLUTION: The rotation central axis of the cutting/holding means in a synthetic resin feeding means is made to meet the rotation central axis of the molding mold means in the compression-molding device. In a synthetic resin feeding region, the female mold of the molding mold means and the cutting/holding means are moved through arc-form loci being aligned in the vertical direction. In this case, this compression-molding system is constituted in such a manner that a synthetic resin under a softened or molten state may be dropped into the molding cavity of the female mold from the cutting/holding means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a compression molding apparatus including a plurality of mold means, an extrusion apparatus for extruding a softened or molten synthetic resin from an extrusion port, and a synthetic resin extruded from the extrusion port of the extrusion apparatus is separated from the extrusion port. The present invention relates to a compression molding system including a synthetic resin supply device for supplying to a mold means of a compression molding device.

  As containers for beverages and the like, synthetic resin containers formed of an appropriate synthetic resin such as polyethylene terephthalate are widely used in practical use. As is well known to those skilled in the art, such a synthetic resin container is formed by compression-molding a softened or molten synthetic resin to form a preform (so-called preform), and then blowing or stretching the preform. It can be conveniently formed by molding.

The compression molding of the preform is performed by a compression molding system including an extrusion device and a synthetic resin supply device together with a compression molding device, as disclosed in Patent Documents 1, 2, and 3 below. The compression molding apparatus is disposed on the rotation base that is driven to rotate about a central axis that extends substantially vertically, and the rotation base at intervals in the circumferential direction. The synthetic resin supply area, the compression / cooling area, and the take-out area are sequentially arranged. And a plurality of mold means that can be moved through a circular trajectory. Each of the mold means includes a female mold having a molding cavity opened upward and a male mold disposed above the female mold, and is opened and closed by moving the male mold up and down relative to the female mold. The extrusion apparatus has an extrusion port, and the softened or molten synthetic resin is extruded through the extrusion port. The synthetic resin supply device includes a support unit that is driven to rotate about a central axis that extends substantially vertically, and a cutting / holding unit that is disposed in the support unit at intervals in the circumferential direction. The means is moved through a circular trajectory that includes a synthetic resin cutting zone and a synthetic resin feed zone. When the cutting / holding means moves through the synthetic resin cutting zone, the cutting / holding means cuts and holds the synthetic resin extruded from the extrusion port. Then, when the cutting / holding means moves in the synthetic resin supply area in synchronization with the mold means, the synthetic resin released from the cutting / holding means is dropped into the female mold cavity.
JP 2000-25729 A JP 2000-108127 A JP 2000-280248 A

  Thus, in the above-described conventional compression molding system, the rotation base of the compression molding device and the support means of the synthetic resin supply device are disposed separately from each other, and the rotation direction of the rotation base, that is, molding The rotation direction of the mold means and the rotation direction of the support means, that is, the rotation direction of the cutting / holding means are opposite to each other, and the circular locus of the mold means in the compression molding apparatus and the circular locus of the cutting / holding means in the synthetic resin supply device. Is only instantaneously overlapped in the synthetic resin supply area. Therefore, in order to supply the synthetic resin to the required part of the mold means with sufficient precision, the cutting / holding means with good timing when the female mold of the mold means and the cutting / holding means are instantaneously overlapped in the resin supply area. It is important that the synthetic resin is detached from the mold and dropped into the mold means. However, because the synthetic resin is softened or melted, it is not impossible to control the point at which the synthetic resin is detached from the cutting / holding means and dropped onto the molding die means. However, in the conventional compression molding system, the position of the synthetic resin supplied into the female molding cavity is displaced from the required part, and this often results in defective compression molding. .

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned facts, and the main technical problem thereof is the molding cavity of the female mold of the mold means in the compression molding apparatus for dropping the synthetic resin from the cutting / holding means in the synthetic resin supply apparatus. It is to provide a new and improved compression molding system that can be positioned with sufficient precision at a required site within.

  In the present invention, in order to achieve the above technical problem, the rotation center axis of the cutting / holding means in the synthetic resin supply means is matched with the rotation center axis of the mold means in the compression molding apparatus, In this case, the female mold of the mold means and the cutting / holding means are moved through an arcuate locus aligned in the vertical direction, and at this time, the soft resin or molten synthetic resin falls from the cutting / holding means into the female mold cavity. To be configured.

That is, according to the present invention, as a compression molding system that achieves the above technical problem, a rotating base that is driven to rotate about a central axis that extends substantially vertically, and a rotating base that is mounted at intervals in the circumferential direction. And a compression molding apparatus including a plurality of mold means that are sequentially conveyed to a synthetic resin supply area, a compression molding / cooling area, and a take-out area by rotation of the rotating base, and a synthetic resin softened or melted from an extrusion port An extrusion apparatus for extruding and a synthetic resin supply apparatus for separating the synthetic resin extruded from the extrusion port of the extrusion apparatus from the extrusion port and supplying the synthetic resin to the mold means, Compression molding including a female mold having a molding cavity opened upward and a male mold disposed above the female mold, and opened and closed by moving the male mold up and down relative to the female mold system Oite,
The female mold of each of the mold means has a first radial position that aligns with the male mold of each of the mold means in the up-down direction and radially outward relative to the first radial position. Or mounted on the rotary base so as to be movable between a second radially displaced position displaced inward, and the first base while moving from the compression molding / cooling zone to the synthetic resin supply zone. Moved from a radial position to the second radial position and moved from the second radial position to the first radial position while being moved from the synthetic resin feed zone to the compression molding and cooling zone. And
The synthetic resin supply device includes a plurality of cutting / holding means arranged corresponding to each of the mold means, and each of the cutting / holding means is located upstream of the synthetic resin supply area. Through the circular trajectory located above and in alignment with the second radial position of the female mold, including the synthetic resin cutting area together with the synthetic resin cutting area located. Moved in the same direction as each with substantially the same angular velocity,
The extrusion port of the extrusion apparatus is located in the synthetic resin cutting zone, and the softened or molten synthetic resin extruded from the extrusion port when the cutting / holding means passes through the synthetic resin cutting zone. The synthetic resin is cut and held by the synthetic resin cutting and holding means, and is softened or melted into the molding cavity of the female mold from the cutting and holding means when the cutting and holding means passes through the synthetic resin supply area. Is dropped,
A compression molding system is provided.

  The second radial position is preferably displaced radially outward from the first radial position. Preferably, the extrusion apparatus includes an extrusion block having a lower surface extending substantially horizontally, the extrusion port is formed in the lower surface of the extrusion block, and each of the cutting and holding means is substantially horizontal. The cutting blade has an extending cutting blade, and when passing through the synthetic resin cutting zone, the cutting blade comes close to or contacts the bottom surface of the extrusion. The cutting / holding means is mounted so as to be movable up and down, and has a guide tube portion that hangs downward. The cutting / holding member is positioned at a lowered position in at least a part of the synthetic resin supply region. It is preferable that the guide cylinder is inserted into the molding cavity of the female mold, and the softened and molten synthetic resin is supplied to the molding cavity of the female mold through the guide cylinder. In a preferred embodiment, a heating zone is disposed between the resin supply zone and the compression molding / cooling zone, and the female mold is moved to the heating zone from the resin feed zone. Moved from a second radial position to a third radial position between the second radial position and the first radial position and moved from the heating zone to the compression molding and cooling zone A softened or melted synthetic resin that is moved from the third radial position to the first radial position and is present in the molding cavity of the female mold as the female mold passes through the heating zone. A heating means for heating the glass to a glass transition temperature or higher is provided. The heating means advantageously heats the softened or molten synthetic resin present in the molding cavity of the female mold to a melting temperature or higher. In a preferred embodiment, a plurality of the molding die means and the cutting / holding means are arranged at intervals in the circumferential direction and are arranged by being displaced in the radial direction. Are also arranged in a radially displaced manner.

In the compression molding system of the present invention, in the synthetic resin supply area existing in an arc shape over a predetermined angle range, the female mold and the cutting / holding means positioned above the die are moved substantially in an arc shape. It is done. Therefore, if the synthetic resin in the softened or melted state is dropped from the cutting / holding means into the female mold cavity during this period, the softened or melted resin is sufficiently accurately and precisely melted at the required position in the female mold cavity. A synthetic resin in a state can be supplied.

  In the following, a preferred embodiment of a compression molding system constructed in accordance with the present invention will be described in more detail with reference to the accompanying drawings.

  Referring to FIG. 1, the illustrated compression molding system for compression molding a preform (preform) to be molded into a container by adding blow or stretch blow molding later is a compression molding apparatus 2. An extrusion device 4, a synthetic resin supply device 6 and a take-out device 8 are provided.

  The compression molding apparatus 2 includes a rotating base 12 that is mounted so as to be rotatable about a central axis 10 that extends substantially vertically (extends perpendicularly to the paper surface in FIG. 1). The rotary base 12 is connected to a rotary drive source (not shown) that may be an electric motor, and the rotary base 12 is driven to rotate at a constant speed in a direction indicated by an arrow 14. A plurality of (12 in the illustrated example) support bases 16 are fixed on the rotary base 12 at equal intervals in the circumferential direction. Mold means 18 are mounted on each of the support bases 16.

  Continuing the description with reference to FIGS. 2 to 6 together with FIG. 1, the mold means 18 includes a female mold 20 and a male mold 22. A guide rail 24 extending substantially horizontally in the radial direction is disposed on the support base 16, and a sliding plate 26 is slidably mounted on the guide rail 24. The female mold 20 is fixed on the sliding plate 26. The sliding plate 26 is connected to an output rod 30 of a reciprocating means 28 which may be of a well-known form, and the sliding plate 26 and the female mold 20 fixed thereto are shown in FIGS. And a second radial position shown in FIGS. 2-4. The female mold 20, which may be in a known form, is formed with a molding cavity 32 opened upward. A pair of struts 34 are planted on the support base 16 at a predetermined interval in the circumferential direction, and a fluid pressure cylinder mechanism 36 constituting an elevating means is disposed between the pair of struts 34. A male die 22 is attached to the tip, that is, the lower end of the output rod 38 of the cylinder mechanism 36 that extends substantially vertically. If desired, other appropriate lifting means such as an electric cylinder mechanism or a cam mechanism can be used instead of the fluid pressure cylinder mechanism 36. The male mold 22, which may be in a well-known form, has a core portion 40 that hangs downward and a molding cavity 42 that defines the mouth and neck of the preform. The operation of the cylinder mechanism 36 causes the male mold 22 to move up and down between the raised position shown in FIGS. 2 to 5 and the lowered position shown in FIG. 6, thus opening and closing the mold means 18. When the rotary base 12 is rotationally driven in the direction indicated by the arrow 14, the mold means 18 is moved through the synthetic resin supply area 44, the compression molding / cooling area 46 and the take-out area 48 in order.

  1 and FIG. 2, the extrusion apparatus 4 is configured so that the extrusion device 4 is provided with a required portion of the synthetic resin cutting area 50 located upstream of the synthetic resin supply area 44 by an appropriate support member (not shown). That is, it includes an extrusion block 52 fixed above the female mold 20 that is located at the second radial position and passes through the synthetic resin cutting zone 50. An inverted truncated cone-shaped portion is disposed at the lower portion of the extrusion block 52, and an extrusion port 54 that may be circular is formed on the lower surface of the inverted truncated cone-shaped portion that extends substantially horizontally. A synthetic resin flow path (not shown) reaching the extrusion port 54 is formed in the extrusion block 52, and the upstream end of the synthetic resin flow path is connected to the extrusion opening of the extruder 56. The softened or molten synthetic resin 58 that flows out from the extruder 56 flows through the synthetic resin flow path of the extrusion block 52 and is pushed out downward from the extrusion port 54 in the vertical direction. Such an extrusion apparatus 4 itself may be in a known form, and therefore a detailed description of its configuration is omitted in this specification.

  Referring to FIGS. 1 to 6, the synthetic resin supply device 8 includes a plurality of cutting / holding means 60 disposed corresponding to each of the mold means 18. Each of the cutting / holding means 60 is mounted on, for example, a support member (not shown) fixed to the rotary base 12. The radial position of the cutting / holding means 60 is aligned with the second radial position of the female mold 20. Each of the cutting / holding means 60 is moved in the direction indicated by the arrow 14 at the same angular velocity in the same direction as each of the female dies 20 in synchronism with the movement of each of the female dies 20. It moves through a circular trajectory that includes the synthetic resin supply area 44 along with the area 50 and is aligned with and above the second radial position of the female mold 20. Each of the cutting / holding means 60 is mounted so as to be movable up and down, and the ascending position shown in FIGS. 4 to 6 and FIGS. 2 and 3 by an appropriate lifting means (not shown) such as a fluid pressure cylinder mechanism. It can be moved up and down between the lowered positions shown in FIG. 7 and 8 together with FIGS. 1 to 6, the cutting / holding means 60 includes a main body 62 and an opening / closing member 64. The main body 62 has a semi-cylindrical upper portion 66, a cylindrical intermediate portion 68, and a cylindrical guide tube portion 70. A groove 72 having a semicircular cross-sectional shape extending vertically is formed in the upper portion 66, and an upper end edge of the groove 72 constitutes a semicircular arc-shaped cutting blade 74 extending substantially horizontally. A hole 76 having a circular cross-sectional shape is formed in the intermediate portion 68 and the guide tube portion 70. The outer diameter of the guide tube portion 70 that hangs downward from the intermediate portion 68 is set to be smaller than the outer diameter of the intermediate portion 68. The opening / closing member 64 has a semi-cylindrical shape corresponding to the upper portion 66 of the main body 62. Connecting arms 78 and 80 are attached to the upper portion 66 of the main body 62 and the opening / closing member 64, respectively. By connecting the connecting arms 78 and 80 with a connecting pin 82 extending substantially vertically, the connecting arm 78 and 80 are connected to each other. An opening / closing member 64 is connected to the upper portion 66 so as to be pivotable between an open position shown in FIGS. 2 and 7 and a closed position shown in FIGS. 3 to 6 and 8. Appropriate turning means (not shown) for turning the opening / closing member 64 is disposed between the upper portion 66 of the main body 62 and the opening / closing member 64. As clearly shown in FIG. 8, when the opening / closing member 64 is positioned at the closed position, a hole having a circular cross-sectional shape is defined between the two, and the hole is formed in the intermediate portion 68 and the guide tube portion 70 of the main body 62. It matches the hole 76 that is present.

  Referring to FIG. 1, the take-out device 8 is mounted so as to be rotatable about a central axis extending substantially vertically (extending perpendicular to the paper surface in FIG. 1), and an appropriate rotational drive source such as an electric motor. (Not shown) includes a turntable 86 rotated in the direction indicated by arrow 84. A plurality of (eight in the illustrated example) arm members 88 projecting radially outward at intervals in the circumferential direction are mounted on the turntable 86, and at the tips of the arm members 88, A receiving means 90 is provided for receiving a compression molded product, ie, a pre-formed body, which is released from the male mold 22 of the mold means 18 in the open state and dropped. Such a take-out device 8 itself may be in a known form, and therefore a detailed description of the take-out device 8 itself is omitted in this specification. If desired, an appropriate extraction means can be attached to each of the support bases 16.

  The operation and effects of the compression molding system as described above will be mainly described with reference to FIG. When the mold means 18 and the cutting / holding means 60 pass through the synthetic resin cutting area 62, as shown in FIG. 2, the mold means 18 is open, the male mold 22 is in the raised position, and the female mold 22 is In the second radial position. The cutting / holding means 60 is in the lowered position, the opening / closing member 64 is in the open position, and the guide tube portion 70 of the main body 62 is inserted into the molding cavity 32 of the female die 20. When the cutting / holding means 60 passes through the synthetic resin cutting area 62 in such a state, the cutting blade 74 of the cutting / holding means 60 moves in contact with or close to the lower surface of the extrusion block 52 and is pushed out from the extrusion port 54. The softened or melted synthetic resin 58 is cut and separated from the extrusion port 54. The cut synthetic resin 58 is accommodated in the groove 72 of the upper portion 66 of the main body 62 of the cutting / holding means 60. When moving from the synthetic resin cutting area 50 to the synthetic resin supply area 44, the opening / closing member 64 of the cutting / holding means 60 is turned to the closed position, and the thus cut synthetic resin 58 is sufficiently reliably cut / held means 60. Held in. When the mold means 18 and the cutting / holding means 60 pass through the synthetic resin supply region 44, the synthetic resin 58 held in the cutting / holding means 60 gradually flows down through the holes 76, and the female The resin is dropped into the molding cavity 32 of the mold 20, and thus the synthetic resin 58 is supplied to the required position in the molding cavity 32 of the female mold 20 with sufficient precision.

  Next, before the molding die means 18 and the cutting / holding means 60 reach the compression molding / cooling zone 46, the cutting / holding means 60 is raised to the raised position, and the guide tube portion 70 is a female die as shown in FIG. 20 upwardly spaced from the 20 mold cavities 32. The raising of the cutting / holding means 60 can be started in the downstream portion of the synthetic resin supply area 44 as necessary. When the guide tube portion 70 of the cutting / holding means 60 is separated upward from the molding cavity 32 of the female mold 20, the female mold 20 is moved to the first radial position as shown in FIG. 20 is positioned directly below the male mold 20.

  While the mold means 18 and the cutting / holding means 60 pass through the compression molding / cooling zone 46, the male mold 22 is lowered and the mold means 18 is closed as shown in FIG. It is compression-molded into a preformed body of the required shape. Then, the mold means 18 continues to be kept closed, and the pre-molded body that has been compression-molded is cooled. When moving from the compression molding / cooling zone 46 toward the extraction zone 48, the male mold 22 is raised to the raised position and the mold means 18 is opened, and then the female mold 20 is moved from the first radial position. Moved to a second radial position. The pre-molded body that has been compression-molded and cooled is raised along with the male mold 22 and released from the female mold 20. In the cutting / holding means 60, the opening / closing member 64 is turned to the open position. In the take-out area 48, the pre-molded body is released from the male mold 22 and dropped, received by the receiving means 90 of the take-out device 8 and taken out from the compression molding apparatus 2. The cutting / holding means 60 raised to the raised position is lowered to the lowered position shown in FIG. 2 when the support base 16 passes through the compression molding / cooling zone 46, for example.

  9-11 illustrate a modified embodiment of a compression molding system constructed in accordance with the present invention. In the embodiment shown in FIGS. 9 and 11, each female mold 120 of the mold means 118 is selectively positioned at a first radial position shown in FIG. 11 and a second radial position shown in FIG. In addition to being selectively positioned at the third radial position shown in FIG. In the embodiment shown in FIGS. 9 and 11, heating means 192 is further provided corresponding to each mold means 118. Each of the heating means 192 includes a nozzle mechanism 194. Each of the nozzle mechanisms 194 is mounted on a support member (not shown) fixed to a rotating base (not shown) to which a support base 116 on which a molding die means 118 is mounted is fixed, for example. It is moved in synchronism with the mold means 18, that is, in the same direction as each of the mold means 18, at the same angular velocity. The nozzle mechanism 194 is mounted so as to be movable up and down between the raised position shown in FIGS. 9 and 11 and the lowered position shown in FIG. 10, and appropriate lifting means (not shown) such as a fluid pressure cylinder mechanism. Can be moved up and down. The nozzle mechanism 194 includes a fluid path that incorporates appropriate heating means such as an electric resistance heater, and the fluid path is connected to a fluid supply source (not shown) that may be room temperature air.

  In the embodiment shown in FIGS. 9 to 11, a synthetic resin supply area (see the synthetic resin supply area 44 in FIG. 1) and a compression molding / cooling area (see the compression molding / cooling area 46 in FIG. 1). 10), a heating zone (not shown) is disposed between the female die 120 and the third die radial position shown in FIG. 10 before the mold means 118 reaches the heating zone. The nozzle mechanism 194 is lowered to the lowered position shown in FIG. 10, and the tip of the nozzle mechanism 194 enters the molding cavity 132 of the female mold 120. Then, a fluid such as air supplied to the nozzle mechanism 194 is heated by a heater built in the nozzle mechanism 194 and sprayed onto the synthetic resin 158 existing in the molding cavity 132 of the female mold 120, and thus the synthetic resin 158. Is heated above the glass transition temperature, preferably above the melting temperature. When the synthetic resin 158 extruded from the extrusion port 154 of the extrusion block 152 is cut by the cutting blade 174 of the cutting / holding means 160, the cut portion of the cut synthetic resin 158 is locally cooled to generate a so-called cutter mark. When such a cutter mark is left as it is and compression molding is performed, local flaws or heterogeneous parts tend to be generated in the compression molded product. However, prior to compression molding, when the synthetic resin 158, particularly its cutting part, is heated to a glass transition temperature or higher, preferably to a melting temperature or higher, the above-mentioned cutter mark disappears and local scratches or foreign parts due to the cutter mark are lost. Generation can be avoided. When the molding tool 118 and the nozzle mechanism 194 are moved from the heating zone to the compression molding zone, the nozzle mechanism 194 is raised to the raised position shown in FIG. 11, and the female die 120 is moved to the first radial position. The

  The configurations and operations other than those described above in the embodiment shown in FIGS. 9 to 11 may be substantially the same as those in the embodiment shown in FIGS.

  12 to 14 show still another embodiment of a compression molding system constructed according to the present invention. In the embodiment shown in FIG. 12 to FIG. 14, a plurality of the mold means 218, the extrusion port 254, the cutting / holding means 260 and the nozzle mechanism 294 are arranged at intervals in the circumferential direction. A plurality (two in FIG. 12 to FIG. 14) are also arranged by being displaced in the radial direction. Except for this configuration, the configuration and operation of the embodiment shown in FIGS. 12 to 14 are substantially the same as the configuration and operation of the embodiment shown in FIGS. 1 to 8 and the embodiment shown in FIGS. 9 to 11. .

1 is a simplified diagram illustrating a preferred embodiment of a compression molding system constructed in accordance with the present invention. FIG. 2 is a partial cross-sectional view showing a state in which the main part of the compression molding system of FIG. 1 passes through a synthetic resin cutting region. The fragmentary sectional view which shows the state through which the principal part of the compression molding system of FIG. 1 passes a synthetic resin supply area. The fragmentary sectional view which shows the state at the time of the principal part of the compression molding system of FIG. 1 moving from a synthetic resin supply area to a compression molding and cooling area. The fragmentary sectional view which shows the state which the principal part of the compression molding system of FIG. 1 arrived at the upstream end of the compression molding / cooling region. The fragmentary sectional view which shows the state through which the principal part of the compression molding system of FIG. 1 passes a compression molding and cooling zone. The top view which shows the cutting | disconnection and holding means in the compression molding system of FIG. 1 in the state which has an opening-and-closing member in an open position. The top view which shows the cutting | disconnection and holding means in the compression molding system of FIG. 1 in the state which has an opening-and-closing member in a closed position. The fragmentary sectional view which shows the state by which the principal part of the deformation | transformation embodiment of the compression molding system comprised according to this invention passes a synthetic resin cutting area. FIG. 10 is a partial cross-sectional view illustrating a state in which a main part of the compression molding system in FIG. 9 passes through a heating region. FIG. 10 is a partial cross-sectional view illustrating a state in which a main part of the compression molding system of FIG. 9 passes through a compression molding / cooling region. The fragmentary sectional view which shows the state by which the principal part of the further deformation | transformation embodiment of the compression molding system comprised according to this invention passes a synthetic resin cutting area. The fragmentary sectional view which shows the state through which the principal part of the compression molding system of FIG. 12 passes a heating area. The fragmentary sectional view which shows the state through which the principal part of the compression molding system of FIG. 12 passes a compression molding and cooling zone.

Explanation of symbols

2: Compression molding apparatus 4: Extruding apparatus 6: Synthetic resin supply apparatus 8: Extraction apparatus 18: Molding means 20: Female mold 22: Male mold 34: Female mold molding cavity 44: Synthetic resin supply area 46: Compression molding / Cooling area 48: Extraction area 50: Synthetic resin cutting area 52: Extrusion block 54: Extrusion port 58: Synthetic resin 60: Cutting / holding means 74: Cutting blade 70: Guide cylinder part 118: Molding means 120: Female mold 158: Synthetic resin 192: Heating means 218: Molding means 254: Extrusion port 260: Cutting / holding means

Claims (7)

A rotation base that is driven to rotate about a central axis that extends substantially vertically, and is attached to the rotation base at intervals in the circumferential direction. By rotation of the rotation base, a synthetic resin supply area, a compression molding / cooling area, and a take-out A compression molding apparatus including a plurality of mold means that are sequentially conveyed to the zone, an extrusion apparatus for extruding a softened or molten synthetic resin from the extrusion port, and a synthetic resin extruded from the extrusion port of the extrusion apparatus And a synthetic resin supply device for supplying the mold to the mold means by separating from the extrusion port, and the mold means is disposed above the female mold and a female mold having a molding cavity opened upward. A compression molding system that is opened and closed by moving the male mold up and down relative to the female mold,
The female mold of each of the mold means has a first radial position that aligns with the male mold of each of the mold means in the up-down direction and radially outward relative to the first radial position. Or mounted on the rotary base so as to be movable between a second radially displaced position displaced inward, and the first base while moving from the compression molding / cooling zone to the synthetic resin supply zone. Moved from a radial position to the second radial position and moved from the second radial position to the first radial position while being moved from the synthetic resin feed zone to the compression molding and cooling zone. And
The synthetic resin supply device includes a plurality of cutting / holding means arranged corresponding to each of the mold means, and each of the cutting / holding means is located upstream of the synthetic resin supply area. Through the circular trajectory located above and in alignment with the second radial position of the female mold, including the synthetic resin cutting area together with the synthetic resin cutting area located. Moved in the same direction as each with substantially the same angular velocity,
The extrusion port of the extrusion apparatus is located in the synthetic resin cutting zone, and the softened or molten synthetic resin extruded from the extrusion port when the cutting / holding means passes through the synthetic resin cutting zone. The synthetic resin is cut and held by the synthetic resin cutting and holding means, and is softened or melted into the molding cavity of the female mold from the cutting and holding means when the cutting and holding means passes through the synthetic resin supply area. Is dropped,
A compression molding system characterized by that.   The compression molding system of claim 1, wherein the second radial position is displaced radially outward from the first radial position.   The extrusion apparatus includes an extrusion block having a bottom surface extending substantially horizontally, the extrusion port being formed in the bottom surface of the extrusion block, and each of the cutting and holding means extending substantially horizontally. The compression molding system according to claim 1, further comprising a cutting blade, wherein the cutting blade is close to or in contact with the lower surface of the extrusion when passing through the synthetic resin cutting region.   The cutting / holding means is mounted so as to be movable up and down, and has a guide tube portion that hangs downward. The cutting / holding member is positioned at a lowered position in at least a part of the synthetic resin supply region. The compression molding system according to claim 3, wherein a guide cylinder portion is inserted into the molding cavity of the female mold, and a softened and molten synthetic resin is supplied to the molding cavity of the female mold through the guide cylinder portion.   A heating zone is disposed between the resin supply zone and the compression molding / cooling zone, and the female mold is moved to the heating zone from the resin feed zone when the second radial position is reached. To the third radial position between the second radial position and the first radial position and from the heating zone to the compression molding / cooling zone, Is moved from the radial position to the first radial position, and when the female mold passes through the heating zone, the softened or melted synthetic resin present in the molding cavity of the female mold exceeds the glass transition temperature. The compression molding system in any one of Claim 1 to 4 with which the heating means to heat is arrange | positioned.   The compression molding system according to claim 5, wherein the heating means heats the softened or molten synthetic resin existing in the molding cavity of the female mold to a melting temperature or higher.   A plurality of the mold means and the cutting / holding means are arranged at intervals in the circumferential direction and are arranged to be displaced in the radial direction, and the extrusion port is also displaced in the radial direction. The compression molding system according to claim 1, wherein a plurality of the compression molding systems are arranged.

Images