JP4622388B2 - Compression molding system - Google Patents

Description

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

Then, the compression molding of the preform is advantageously 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 rotating base that is driven to rotate about a central axis that extends substantially vertically, and the rotating base at intervals in the circumferential direction. The resin supply area, the compression / cooling area, and the take-out area are sequentially arranged. It includes a plurality of mold tool means that are moved through a circular trajectory. 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 an extrusion zone and a resin feed zone. When the cutting / holding means moves through the extrusion 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 resin supply area in synchronization with the mold means, the synthetic resin released from the cutting / holding means is dropped onto a required portion of the molding die means.
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. The circular locus only overlaps instantaneously in the resin supply area. Therefore, in order to supply the synthetic resin to the required part of the molding die means with sufficient precision, the cutting / holding means can be moved in a timely manner when the molding die means and the cutting / holding means are instantaneously overlapped in the resin supply area. It is important that the synthetic resin detaches and falls into the molding die 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 to the molding die means deviates from the required part, and this often causes a compression molding defect.

  The present invention has been made in view of the above-mentioned facts, and the main technical problem thereof is the necessity of the molding die means in the compression molding apparatus for removing the synthetic resin from the cutting / holding means in the synthetic resin supply apparatus and dropping it. It is to provide a new and improved compression molding system that can be positioned sufficiently precisely at the site.

  In the present invention, in order to achieve the above technical problem, the rotational center of the cutting / holding means in the synthetic resin supply apparatus is substantially matched with the center of the circular locus of the molding die means in the compression molding apparatus, and The rotational direction and rotational angular velocity of the holding means are substantially matched with the rotational direction and rotational angular velocity of the molding die means, and in the resin supply area that exists in an arc shape over the required angular range, the radial position of the cutting / holding means Is aligned with the circular trajectory of the molding die means, so that the cutting / holding means can be aligned with a required portion of the molding die means and can be moved above.

That is, according to the present invention, distribution as a compression molding system to achieve the above principal object, turntable that is driven to rotate about a central axis extending lead directly, and in the circumferential direction at intervals to the turntable A compression molding apparatus including a plurality of molding mold means installed and moved through a circular locus including a resin supply area, a compression molding / cooling area, and a take-out area, and a synthetic resin softened or melted from an extrusion port. An extrusion device for extruding, and a synthetic resin supply device for separating the synthetic resin extruded from the extrusion port of the extrusion device from the extrusion port and supplying the synthetic resin to the molding die means of the compression molding device. In compression molding system,
The synthetic resin feeding device includes a support means which is rotationally driven in and the turntable and the same angular velocity about the central axis line and the case match the central axis to the turntable in the same direction of the rotation base in the compression molding apparatus A plurality of cutting / holding means disposed on the supporting means at intervals in the circumferential direction and movably in the radial direction; and A radially moving means for selectively positioning the first radially displaced inwardly displaced position and a second radially aligned position aligned with the circular trajectory; Holding means is positioned at the second radial position corresponding to at least the resin supply area of the circular track and is moved through the resin supply area;
A compression molding system is provided.

In a preferred embodiment of the present invention,
The extrusion port of the extrusion device is displaced radially outward or inward with respect to the circular trajectory of the molding die means in the compression molding device, and the first radial position of the cutting / holding means is Are disposed in an extrusion region located on the locus of the resin and upstream from the resin supply region, and each of the molding die means in the compression molding apparatus is disposed above the female die and the female die. And is opened and closed by moving the male mold up and down relative to the female mold, and is opened in the resin supply area in the circular trajectory. During the period, the cutting and holding means in the synthetic resin feeding device, is moved from the first radial position to said second radial position after passing through the pressing Deiki, the female and male Passing through the resin supply area in a state of being located between the mold and the resin After passing through the feed area, the second radial position is moved to the first radial position. In this case, in the start-up preparation period from the start of the operation of the extrusion device until the state of the synthetic resin extruded from the extrusion port becomes stable, the cutting / holding means corresponds to the second extrusion region. It is preferable to be positioned at a radial position.

In another preferred embodiment of the present invention, the extrusion port of the extrusion apparatus is aligned with the circular locus of the molding die means in the compression molding apparatus and is located upstream of the resin supply area. Each of the mold tool means in the compression molding apparatus includes a female mold and a male mold disposed above the female mold, the male mold being relative to the female mold. Is opened and closed by being moved up and down, and is opened in the extrusion zone and the resin supply zone, and during normal operation, the cutting and holding means in the synthetic resin feeder is the extrusion zone. passing is moved from the first radial position to said second radial position, the pressing Deiki and the resin feed zone while positioned between the female and the male on the upstream than And after passing through the resin supply area, the second radial position Moved in the radial position of Luo said first. In this case, during the start-up preparation period from the start of the operation of the extrusion device until the state of the synthetic resin extruded from the extrusion port becomes stable, the cutting / holding means corresponds to the first extrusion region. It is preferable to be positioned at a radial position.

  Preferably, the cutting / holding means is selectively set to a closed state in which the synthetic resin cut from the extrusion port is sandwiched and an open state in which the sandwiched synthetic resin is opened, at least one of which is movable The holding member is set to the closed state when passing through the extrusion region, and returned to the open state while passing through the resin supply region.

  In the compression molding system of the present invention, the cutting / holding means is aligned with the second locus in the radial direction, that is, the circular locus of the molding die means in the radial direction in the synthetic resin supply area existing in an arc shape over a predetermined angle range. By positioning at the position to be cut, the cutting / holding means is aligned with the required portion of the molding die means and moved over the required angle range. Therefore, as long as the synthetic resin is detached from the cutting / holding means and dropped onto the molding die means while passing through the synthetic resin supply area existing in an arc shape over a predetermined angle range, the molding die Synthetic resin can be supplied to the required part of the mold means with sufficient precision.

  Hereinafter, with reference to an accompanying drawing, a suitable embodiment of a compression molding system constituted according to the present invention is described in detail.

  Referring to FIGS. 1 and 2 illustrating a preferred embodiment of a compression molding system constructed in accordance with the present invention, the compression molding system includes a compression molding apparatus 2, an extrusion apparatus 4, and a synthetic resin supply apparatus 6. It has.

  The compression molding apparatus 2 includes a rotating base (not shown in order to avoid complication of the drawing) that is rotatably mounted around a central axis 8 that extends substantially vertically. 1 is connected to a drive source (not shown), and is driven to rotate in the direction indicated by the arrow 10 in FIG. A plurality of molding die means 12 are arranged at equal intervals in the circumferential direction at the peripheral edge of the rotating base. When the rotary base is driven to rotate in the direction indicated by the arrow 10, each of the molding die means 12 is moved along the circular locus 14. The circular locus 14 includes a resin supply area 16, a compression molding / cooling area 18, and an extraction area 19. As clearly shown in FIG. 2, each of the molding dies 12 is composed of a female mold 20 and a male mold 22 disposed above the female mold 20. The illustrated molding die 12 is for compression-molding a pre-molded body that is later blow-molded and put into a container, and the female die 20 is formed with a molding cavity 24 extending downward. The male mold 22 is formed with a core portion 26 that extends downward and a molding cavity 28 that defines the mouth and neck of the preform. The female mold 20 and the male mold 22 are moved up and down relatively, whereby the molding die means 12 is opened and closed. FIG. 2 shows the molding die means 12 in the open state. After the molding die means 12 passes through the resin supply area 16, the closing movement of the molding mold means 12 is started, and when the molding mold means 12 passes through the compression molding / cooling area 18, the closing movement of the molding mold means 12 is completed. Then, after passing through the compression molding / cooling zone 18, the opening of the molding die means 12 is started, and the opening is completed before reaching the take-out zone 19. The configuration of the compression molding apparatus 2 itself as described above may be in a form well known to those skilled in the art, and therefore a detailed description thereof will be omitted in this specification.

  Referring to FIGS. 1 and 3, the extrusion apparatus 4 includes an extrusion head 30. The extrusion head 30 is formed with a cylindrical projection that protrudes downward, and an extrusion port 32 that may be circular is formed on the lower surface of the projection that extends substantially horizontally. The extrusion head 30 is formed with an extrusion flow path (only part of which is shown in FIG. 2) extending to the extrusion port 32, and the upstream end of the extrusion flow path is connected to an extruder (not shown). It is connected. The softened or molten synthetic resin flowing out from the extruder is caused to flow through the extrusion flow path, and is extruded from the extrusion port 32 downward in the vertical direction. The configuration of the extrusion device 4 itself may be in a form well known to those skilled in the art, and therefore a detailed description of the configuration of the extrusion device 4 itself is omitted in this specification.

  1 and 2, the synthetic resin supply device 6 includes support means 36 (only a part of the main part is shown in FIG. 2) whose main part is cylindrical. Yes. The support means 36 is mounted so as to be rotatable about a central axis substantially aligned with the central axis 8 of the rotary base (not shown) in the compression molding apparatus 2. A drive source (not shown), which may be an electric motor, is connected to the support means 36. The drive means causes the support means 36 to move in the same direction as the rotation direction of the rotary base, that is, the direction indicated by the arrow 10. It is driven to rotate at an angular velocity substantially the same as the angular velocity of the rotating base. If desired, the support means 36 can be formed integrally with the rotary base in the compression molding apparatus 2.

  The supporting means 36 is provided with a plurality of cutting / holding means 38 at intervals in the circumferential direction. The angular interval and the number of arrangement of the cutting / holding means 38 are the same as the angular interval and the arrangement number of the molding die means 12 in the compression molding apparatus 2, and the arrangement angular position of each of the cutting / holding means 38 is formed. It is aligned with the arrangement angle position of the mold means 12. Referring to FIG. 2 in detail, the support means 36 is formed with a disposition opening 40 penetrating in the radial direction corresponding to the disposition angle position of the cutting / holding means 38. The arrangement opening 40 has a bottom surface extending substantially horizontally, and a guide member 42 is fixed to the bottom surface. An inverted L-shaped support bracket 44 is attached to the guide member 42 so as to be slidable in the left-right direction in FIG. More specifically, a guide groove extending in the left-right direction in FIG. 2 is formed on the upper surface of the guide member 42, and a guided member 46 fixed to the lower surface of the support bracket 44 is slidably engaged with the guide groove. Thus, the support bracket 44 is attached to the support means 36 so as to be movable in the left-right direction in FIG. The support means 36 is also fitted with radial movement means 48. In the illustrated embodiment, the radial movement means 48 is constituted by a pneumatic cylinder mechanism located below the mounting opening 40. The cylinder of the cylinder mechanism is fixed to the support means 36, and the piston is connected to one end of the support bracket 44 via the connecting member 50. As the piston of the cylinder mechanism is expanded and contracted, the support bracket 44 is selectively positioned at a first radial position indicated by a solid line in FIG. 2 and a second radial position indicated by a two-dot chain line 44A in FIG. . In the illustrated embodiment, the support bracket 44 is selectively positioned at a first radial position and a second radial position by reciprocating linearly, but if desired, for example, the support bracket 44 may be It is also possible to selectively place the first radial position and the second radial position by mounting the rotary shaft about a pivot axis extending substantially vertically and allowing it to reciprocate.

  A guide member 52 is fixed to the front surface (right surface in FIG. 2) of the upright portion of the support bracket 44, and an L-shaped support bracket 54 is slidably mounted in the guide member 52 in the vertical direction. More specifically, a guide groove extending in the vertical direction is formed on the front surface of the guide member 52, and a guided member 56 fixed to the rear surface (left surface in FIG. 2) of the upright portion of the support bracket 54 in the guide groove. Thus, the support bracket 54 is mounted on the guide member 52 so as to be slidable in the vertical direction. A driven cam roller 58 is rotatably mounted on the front surface of the upright portion of the support bracket 54. The driven cam roller 58 is engaged with a cam groove (not shown) extending along the circular locus 14. A protruding member 60 that protrudes forward is fixed to the upright portion of the inverted L-shaped support bracket 44 described above. A tension spring 62 (only one tension spring 62 is shown in FIG. 2) is stretched between the protruding member 60 and the support bracket 54 on both sides in the circumferential direction. As will be further described later, the support bracket 54 is normally in the raised position indicated by a solid line and a two-dot chain line in FIG. 2 (the upper end of the support bracket 54 is brought into contact with the lower surface of the protruding member 60 in the raised position). Although it is positioned, when it passes through the resin supply area 16, it is rapidly lowered to the lowered position shown by the two-dot chain line in FIG. 2 by the cooperation of the cam groove and the cam driven roller 58, and then to the raised position. Returned.

  The cutting / holding means 38 is attached to the support bracket 54. 1 and 2, each of the cutting / holding means 38 in the illustrated embodiment includes a cutting member 66 and a pair of holding members 68a and 68b arranged below the cutting member 66. It is configured. The cutting member 66 and one holding member 68a are fixed to the support bracket 54 via a connecting member 69, while the other holding member 68b is shown in an open position shown by a solid line in FIG. 2 and a two-dot chain line in FIG. A support bracket 54 is mounted so as to be movable in the left-right direction in FIG. More specifically, a guide member 70 is fixed to the lower surface of the support bracket 54, and a guide groove extending in the left-right direction in FIG. 2 is formed on the lower surface of the guide member 70. On the other hand, a substantially inverted L-shaped connecting member 72 is fixed to the rear surface (right surface in FIG. 2) of the holding member 68b, and a guided member 74 is fixed to the upper surface of the horizontal portion of the connecting member 72. The guided member 74 is engaged with the guide groove, and thus the connecting member 72 and the holding member 68b to which the connecting member 72 is fixed are mounted on the support bracket 54 slidably along the guide groove. A tension spring 76 (only one tension spring 76 is shown in FIG. 2) is stretched between the connecting member 72 and the support bracket 44 on both sides in the circumferential direction. Further, a driven cam roller 78 is rotatably mounted on the lower surface of the horizontal portion of the connecting member. The driven cam roller 78 is engaged with a cam groove (not shown) extending along the circular locus 14. As will be further described later, the holding member 68b is normally positioned in the open position, but is positioned in the closed position for a predetermined period by the cooperation of the driven cam roller 78 and the cam groove.

  The operation of the compression molding system as described above will be summarized as follows. When the support bracket 44 is positioned at the first radial position indicated by the solid line in FIG. 2, each of the cutting and holding means 38 is also positioned at the first radial position indicated by the solid line in FIG. In addition, it is displaced radially outward from the circular locus 14 of the molding die means 12. Therefore, when the support means 36 is driven to rotate in the direction indicated by the arrow 10, the cutting / holding means 38 is moved through the arc locus 80 having a larger radius than the circular locus 14. The extrusion port 32 in the extrusion device 6 is positioned in an extrusion region 82 located on the arc locus 80. During the normal operation period, the cutting / holding means 38 passes through the extrusion zone 82 while being positioned at the first radial position. As clearly understood by referring to FIG. 3 in conjunction with FIG. 1, in the extrusion zone 82, the cutting member 66 of the cutting / holding means 38 approaches or contacts the lower surface of the extrusion head 30 and crosses the extrusion port 32. Thus, the synthetic resin 84 extruded from the extrusion port 32 is cut by the cutting member 66. The cut synthetic resin 84 is positioned between the pair of holding members 68a and 68b. One holding member 68b is moved from the open position indicated by the solid line in FIG. 2 to the closed position indicated by the two-dot chain line in FIG. 2 and at the solid position in FIG. 3 substantially simultaneously with or immediately after the cutting member 66 cuts the synthetic resin 84. The synthetic resin 84 that has been moved and thus cut is sandwiched between the pair of holding members 68a and 68b that have been changed from the open state to the closed state.

  Next, the support bracket 44 and the cutting / holding means 38 attached thereto are gradually moved inward in the radial direction, and the cutting / holding means 38 at the upstream end of the resin supply region 16 or somewhat upstream of this. Is positioned at a second radial position indicated by a two-dot chain line in FIG. 2 and aligned with the circular locus 14 of the molding die means 12. In the resin supply area 16, as clearly shown in FIG. 4, the cutting / holding means 38 moves between the female mold 20 and the male mold 22 of the molding die means 12 that is open in the vertical direction. I'm damned. In this case, one of the pair of holding members 68a and 68b holding the synthetic resin 84 between them, that is, the holding member 68b is shown in FIG. 2 from the closed position indicated by a two-dot chain line in FIG. And is moved to the open position indicated by the solid line in FIG. Further, the entire support bracket 54 and the cutting / holding means 38 attached to the support bracket 54 are rapidly lowered from the raised position indicated by the solid line in FIG. 4 to the lowered position indicated by the two-dot chain line in FIG. Thus, the synthetic resin 84 held between the pair of holding members 68 a and 68 b is dropped downward and supplied to a required portion of the female die 20, that is, the molding cavity 24. In the resin supply area 16 extending in a circular arc shape over a predetermined range, the cutting / holding means 38 is aligned with the female mold 20 of the molding die means 12 and is positioned in the same direction as the female mold 20. Since the molding die means 12 and the cutting / holding means 38 pass through the resin supply area 16, the synthetic resin 84 can even be dropped from the pair of holding members 68 a and 68 b onto the female mold 20 because they are moved at the same speed. Then, the synthetic resin 84 can be supplied sufficiently precisely into the molding cavity 24 of the female mold 20.

  After passing through the resin supply area 16, the cutting / holding means 38 is returned to the raised position shown by solid lines in FIGS. Further, the support bracket 44 and the cutting / holding means 38 attached to the support bracket 44 are gradually moved outward in the radial direction, and the cutting / holding means 38 is positioned at the first radial position to form the molding die. It is displaced radially outward from the circular trajectory 14 of the means 12.

  The molding die means 12 in which the synthetic resin 84 is supplied into the molding cavity 24 of the female mold 20 is gradually closed after passing through the resin supply area 16, and when it passes through the compression molding / cooling area 18, The closing movement of the mold means 12 is completed, and thus the synthetic resin 84 is compression-molded into a compression-molded product having a desired shape, that is, a preform, and cooled. After passing through the compression molding / cooling zone 18, the opening of the molding die means 12 is started, and the opening of the molding die means 12 is completed before reaching the take-out zone 19. In the take-out area 19, the compression-molded preform is removed from the molding die means 12 and taken out by appropriate take-out means (not shown).

  As is well known, the synthetic resin 84 extruded from the extrusion port 32 is not in a required state until a predetermined time has elapsed after the operation of the extruder (not shown) is started, and the operation of the extruder is started. In the start-up preparation period until the synthetic resin 84 extruded from the extrusion port 32 is stabilized in a required state, it is desirable not to supply the synthetic resin 84 extruded from the extrusion port 32 to the molding die means 12. In such a start-up preparation period, the cutting / holding means 38 is positioned at a second radial position indicated by a two-dot chain line in FIG. Thus, the cutting / holding means 38 moves radially inward of the extrusion port 32 without moving across the extrusion port 32, and thus does not cut and hold the synthetic resin 84 extruded from the extrusion port 32. The synthetic resin 84 is not supplied to the molding die means 12. The synthetic resin 84 extruded from the extrusion port 32 is received by a receiving member 86 (FIG. 3) disposed below the extrusion port 32, and is flowed over the receiving member 86 and collected.

  5 and 6 illustrate another preferred embodiment of a compression molding system constructed in accordance with the present invention. In the compression molding system shown in FIGS. 5 and 6, the extrusion zone 182 where the extrusion port 132 is disposed is positioned upstream of the resin supply zone 116 in alignment with the circular locus 114 of the molding die means 112. ing. Then, the cutting / holding means 138 is aligned with the first radial position positioned inwardly of the circular locus 114 of the molding die means 112 and the circular locus 114 of the molding die means 112 when viewed in the radial direction. Selectively positioned at a second radial position.

  During the normal operation period, the cutting / holding means 138 is moved from the first radial position to the second radial position on the upstream side of the extrusion zone 182. Therefore, as shown in FIG. Means 138 is moved across extrusion port 132. The cutting member 166 of the cutting / holding unit 138 cuts the synthetic resin 184 extruded from the extrusion port 132 from the extrusion port 132, and one of the pair of holding members 168a and 168b of the cutting / holding unit 138, that is, the holding member 168b. At the same time as or immediately after the cutting member 166 cuts the synthetic resin 184, the cutting member 166 is moved from the open state to the closed state, and the synthetic resin 184 thus cut is held between the pair of holding members 168a and 168b.

  The cutting / holding means 138 continues to be positioned at the second radial position and passes through the resin supply area 116. In the resin supply area 116, the cutting / holding means 138 is moved between the female mold 120 and the male mold 122 of the molding die means 112 which is open in the vertical direction. At this time, one of the pair of holding members 168a and 168b holding the synthetic resin 148 between them, that is, the holding member 168b is moved from the closed position to the open position. Further, the entire cutting / holding means 38 is rapidly lowered from the raised position to the lowered position. Thus, the synthetic resin 184 held between the pair of holding members 168a and 168b is dropped downward and supplied to a required portion of the female die 120, that is, the molding cavity 124.

  After passing through the resin supply area 116, the cutting / holding means 138 is returned to the raised position. Further, the cutting / holding means 138 is gradually moved inward in the radial direction, and the cutting / holding means 138 is positioned at the first radial position so as to be more radial than the circular locus 114 of the molding die means 112. Displaced inward and positioned.

  In the start-up preparation period from the start of the operation of the extruder until the synthetic resin 84 extruded from the extrusion port 132 is stabilized in the required state, the cutting / holding means 138 has a second radius on the upstream side of the extrusion zone 182. Therefore, the cutting / holding means 138 moves radially inward of the extrusion port 132 without moving across the extrusion port 132. Therefore, the synthetic resin 184 extruded from the extrusion port 132 is not cut and held, and the synthetic resin 184 is not supplied to the molding die means 112. The synthetic resin 184 extruded from the extrusion port 132 is received by a receiving member 186 (FIG. 6) disposed below the extrusion port 132, and is flowed over the receiving member 186 and collected.

  Since the configuration and operation other than the above-described configuration and operation in the embodiment shown in FIGS. 5 and 6 are substantially the same as the configuration and operation of the embodiment described with reference to FIGS. Omitted.

1 is a simplified plan view illustrating a preferred embodiment of a compression molding system configured in accordance with the present invention. The fragmentary sectional view which shows a part of resin supply apparatus in the compression molding system of FIG. 1 with a part of molding die means of a compression molding apparatus. The fragmentary sectional view which shows the extrusion area | region in the compression molding system of FIG. The fragmentary sectional view which shows the resin supply area in the compression molding system of FIG. FIG. 6 is a simplified plan view illustrating another preferred embodiment of a compression molding system configured in accordance with the present invention. The fragmentary sectional view which shows the extrusion area | region in the compression molding system of FIG.

Explanation of symbols

2: Compression molding apparatus 4: Extrusion apparatus 6: Synthetic resin supply apparatus 12: Molding die means 14: Circular locus 16: Resin supply area 20: Female mold 22: Male mold 30: Extrusion head 32: Extrusion port 36: Support means 38: Cutting / holding means 48: Radial direction moving means 66: Cutting member 68a: Holding member 68b: Holding member 82: Extrusion area 84: Synthetic resin 112: Molding means 114: Circular locus 116: Resin supply area 120: Female Mold 122: Male mold 132: Extrusion port 138: Cutting / holding means 166: Cutting member 168a: Holding member 168b: Holding member 182: Extrusion zone 184: Synthetic resin

Claims (6)

Turntable which is rotationally driven around the lead directly extending central axis, and circumferentially spaced are disposed in the turntable, the circular trajectory that includes a resin feed zone, compression molding and cooling zone and ejection zone sequentially A compression molding apparatus including a plurality of molding die means moved through, 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 In a compression molding system comprising a synthetic resin supply device for separating from an extrusion port and supplying the molding die means of the compression molding device,
The synthetic resin feeding device includes a support means which is rotationally driven in and the turntable and the same angular velocity about the central axis line and the case match the central axis to the turntable in the same direction of the rotation base in the compression molding apparatus A plurality of cutting / holding means disposed on the supporting means at intervals in the circumferential direction and movably in the radial direction; and A radially moving means for selectively positioning the first radially displaced inwardly displaced position and a second radially aligned position aligned with the circular trajectory; Holding means is positioned at the second radial position corresponding to at least the resin supply area of the circular track and is moved through the resin supply area;
A compression molding system characterized by that. The extrusion port of the extrusion device is displaced radially outward or inward with respect to the circular trajectory of the molding die means in the compression molding device, and the first radial position of the cutting / holding means is Located in the extrusion zone located on the trajectory and upstream of the resin supply zone,
Each of the molding die means in the compression molding apparatus includes a female mold and a male mold disposed above the female mold, and by moving the male mold up and down relative to the female mold. The resin supply area in the circular trajectory is opened, and in a normal operation period, the cutting / holding means in the synthetic resin supply apparatus passes through the extrusion area and then passes through the extrusion area. It is moved from a first radial position to said second radial position, passes through the resin feed zone while positioned between the female and the male, after passing through the resin feed zone The compression molding system of claim 1, wherein the compression molding system is moved from the second radial position to the first radial position.   In the start-up preparation period from the start of the operation of the extrusion apparatus to the stabilization of the state of the synthetic resin extruded from the extrusion port, the cutting / holding means corresponds to the second extrusion area in the second radial direction. The compression molding system of claim 2, wherein the compression molding system is positioned in position. The extrusion port of the extrusion device is disposed in an extrusion region that is aligned with the circular locus of the molding die means in the compression molding device and located upstream from the resin supply region,
Each of the molding die means in the compression molding apparatus includes a female mold and a male mold disposed above the female mold, and by moving the male mold up and down relative to the female mold. In the normal operation period, the cutting / holding means in the synthetic resin supply device is upstream of the extrusion zone. is moved from a first radial position to said second radial position, passes through the pressing Deiki and the resin feed zone while positioned between the female and the male, the resin feed zone The compression molding system of claim 1, wherein the compression molding system is moved from the second radial position to the first radial position after passing through.   In the start-up preparation period from the start of the operation of the extrusion apparatus to the stabilization of the state of the synthetic resin extruded from the extrusion port, the cutting / holding means corresponds to the first radial direction. The compression molding system of claim 4, wherein the compression molding system is positioned in position.   The cutting / holding means is selectively set to a closed state for sandwiching the synthetic resin cut from the extrusion port and an open state for opening the sandwiched synthetic resin, at least one of which is a pair of holding members movable The compression molding system according to any one of claims 2 to 4, wherein the compression molding system is set to the closed state when passing through the extrusion zone, and is returned to the open state while passing through the resin supply zone. .

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