JP2008023746A - Molding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the productivity of a product while reducing costs necessary for a whole apparatus. <P>SOLUTION: In a molding apparatus 10, a movable mold 11 having a cavity 15, a fixed mold 12 in which first and second runner channels 16 and 17 are formed, and a runner stripper plate 13 in which a sprue hole 21 is formed are provided, and the first and second runner channels 16 and 17 and a sprue runner SR molded in a sprue hole 21 are cut off from the product molded in the cavity 15. A runner lock pin 20 which fits the sprue runner SR to the runner stripper plate 13, a push pin 22 which pushes the sprue runner SR fitted by the runner lock pin 20 to the side of the fixed mold 12, and a torque application means which applies torque to the sprue runner SR pushed out by the push pin 22 are provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a molding apparatus, and more particularly, to a molding apparatus applied to a three-plate type molding die including a fixed side mold plate, a movable side mold plate, and a runner stripper plate.

  In general, in a three-plate type molding die, as shown in FIG. 8, a fixed side mold plate 82, a runner stripper plate 83, and a fixed side mounting plate with respect to a movable side mold portion having a movable side mold plate 81. Fixed side mold parts having 84 are arranged opposite to each other. A cavity 88 is formed in the molding die through a spool hole 85, a runner 86 and a pinpoint gate 87.

  At the time of molding, molten resin is injected from the spool hole 85 and filled into the cavity 88 through the runner 86 and the pinpoint gate 87. Then, after the molten resin filled in the cavity 88 is solidified, first, as shown in FIG. 9, the fixed-side mold plate 82 and the runner stripper plate 83 are separated, so that the gate cut in the pinpoint gate 87 is performed. Done. In FIG. 9, a part 87a of the pinpoint gate 87 generated by the gate cut is shown. Next, as shown in FIG. 10, by separating the movable side mold plate 81 from the fixed side mold plate 82, the product 89 formed in the cavity 88 is released, and the runner stripper is removed from the fixed side mounting plate 84. By separating the plate 83, the spool runner 90 is released.

In general, the mold release of the spool runner 90 is performed by a spool runner take-out machine disposed so as to be able to be taken in and out between the fixed side mold plate 82 and the runner stripper plate 83 in order to ensure the reliable removal of the spool runner 90. (For example, refer to Patent Document 1). Patent Document 1 proposes a molding apparatus in which a spool runner take-out machine having a function capable of rotating the spool runner 90 is taken out from the side of the molding die after the spool runner 90 is rotated.
JP-A-7-156213

  However, in the conventional molding apparatus, it is necessary to dispose a spool runner take-out machine and to control it so that it can be inserted and removed between the fixed side mold plate 82 and the runner stripper plate 83 at a predetermined timing. There is a problem that the overall cost increases. Further, since it is necessary to take out the spool runner 90 by the spool runner take-out machine every time the product 89 is molded, the time required to complete the product 89 is prolonged, and as a result, the productivity of the product 89 is reduced. There's a problem.

  In addition, when the spool runner 90 is released by separating the runner stripper plate 83 and the fixed-side mounting plate 84 without using the spool runner take-out machine, the hole portion formed in the runner stripper plate 83 As a result of the situation where the spool runner 90 is caught and the operator needs to remove the spool runner 90, the productivity of the product 89 decreases.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a molding apparatus capable of improving product productivity while reducing the cost required for the entire apparatus.

  The molding apparatus of the present invention is connected to a movable side mold plate in which a cavity is formed, a fixed side mold plate in which a first resin transfer path connected to the cavity is formed, and the first resin transfer path. And a runner stripper plate on which a second resin transfer path is formed, and a molding apparatus that separates the runner resin molded in the first and second resin transfer paths from the molded resin molded in the cavity. , A locking means for locking the runner resin to the runner stripper plate, an extrusion means for pushing the runner resin locked by the locking means to the fixed template side, and the extrusion means And a rotational force applying means for applying a rotational force to the runner resin.

  According to the above molding apparatus, when the runner resin locked to the runner stripper plate by the locking means is pushed out to the fixed side mold plate side, a rotational force is applied to the runner resin by the rotational force applying means. Even when the runner resin take-out machine (spool runner take-out machine) is not used, the runner resin can be removed while preventing the runner resin from getting caught in the holes formed in the runner stripper plate. It is possible to improve the productivity of the product while reducing the cost required for.

  In the molding apparatus, for example, the rotational force applying means includes a groove formed in the second resin transfer path and a rib formed in the runner resin corresponding to the groove. In this case, it is possible to apply a rotational force to the runner resin simply by forming a groove in the second resin transfer path, so the entire apparatus as compared with a conventional molding apparatus using a runner resin take-out machine. It is possible to reduce the cost required for this.

  In particular, in the molding apparatus, it is preferable that the groove portion is inclined with respect to the extrusion direction of the runner resin by the extrusion means. In this case, since the groove portion is inclined with respect to the direction of extrusion of the runner resin, when the runner resin is pushed out, the corresponding rib advances along the groove portion, thereby reliably rotating the runner resin. It becomes possible.

  In the molding apparatus, a plurality of the groove portions may be formed in the second resin transfer path. In this case, since a plurality of ribs corresponding to the plurality of grooves proceed along the plurality of groove portions, it is possible to more effectively apply the rotational force to the runner resin.

  In the molding apparatus, the second resin transfer path may be formed in a spool bush accommodated in the runner stripper plate. In this case, since the second resin transfer path is formed in the spool bush accommodated in the runner stripper plate, for example, even when the groove formed in the second resin transfer path is damaged, the spool It becomes possible to apply rotational force to the runner resin again simply by replacing the bush. In addition, multiple spool bushings with different groove slopes are prepared in advance, and the spool bushings are exchanged according to resin materials with different characteristics, enabling effective rotation to runner resins molded from various resin materials. It becomes possible to give power.

  Moreover, in the said shaping | molding apparatus, the said latching means is comprised with the runner lock pin which latches a part of said runner resin, for example. In this case, the runner resin can be efficiently locked using the runner lock pin.

  Further, in the molding apparatus, for example, the pushing means may include a biasing member that biases a part of the runner resin toward the fixed side template. In this case, by urging a part of the runner resin toward the fixed side template with the urging member, the runner resin can be reliably pushed out toward the fixed side template.

  In particular, in the said shaping | molding apparatus, it is preferable to arrange | position the said biasing member in the vicinity of the said latching means. In this case, since the urging member is disposed in the vicinity of the locking means, the locking of the runner resin by the locking means is efficiently released, and the runner resin is reliably pushed out to the fixed template side. It becomes possible.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the shaping | molding apparatus which can improve the productivity of a product, reducing the cost which the whole apparatus requires.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIGS. 1-3 is a schematic block diagram of the shaping | molding apparatus 10 which concerns on one embodiment of this invention. 1 shows a state in which the molding apparatus 10 according to the present embodiment is closed, FIG. 2 shows a state in which the molding apparatus 10 according to the present embodiment is partially opened, and FIG. It has shown about the state which the shaping | molding apparatus 10 which concerns on a form opened completely. In addition, in FIG. 1 to FIG. 3, for convenience of explanation, a state in which the molten resin is injected into the molding apparatus 10 or a state in which the molten resin is solidified is illustrated, and a cross section in which the molten resin can be confirmed is illustrated. ing.

  As shown in FIGS. 1 to 3, the molding apparatus 10 according to the present embodiment is applied to a general three-plate type molding die. That is, as shown in FIG. 1, the molding apparatus 10 has a fixed side mold part having a fixed side mold plate 12, a runner stripper plate 13 and a fixed side mounting plate 14 with respect to the movable side mold part having the movable side mold plate 11. Are arranged opposite to each other.

  The movable mold plate 11 is formed with a cavity 15 in which a desired product P is molded by solidifying the injected molten resin. FIG. 1 shows the case where two cavities 15 are formed side by side in the vertical direction shown in FIG. 1, but the number of cavities 15 to be formed is not limited to this and can be changed as appropriate. Is possible.

  A first runner groove 16 is formed in the fixed-side template 12 in the vertical direction shown in FIG. 1, and a second runner groove 17 is formed in the left-right direction shown in FIG. A pinpoint gate 18 is formed at an end portion on the left side shown. The first runner groove 16 and the second runner groove 17 constitute a path (first resin transfer path) for transferring the molten resin. The first runner groove 16 is formed on the surface on the runner stripper plate 13 side. The second runner groove 17 has one end connected to the vicinity of the end of the first runner groove 16 and the other end connected to the pinpoint gate 18. As shown in FIG. 1, the pinpoint gate 18 is connected to a cavity 15 formed in the movable side mold plate 11 in a state where the molding apparatus 10 is closed.

  The runner stripper plate 13 accommodates one end of a spool bush 19 near the center thereof, and a runner lock pin 20 as a locking means is disposed at a position spaced apart from the spool bush 19 by a certain distance. Inside the spool bush 19, a spool hole 21 is formed that constitutes a path (second resin transfer path) for injecting the molten resin into the molding die. The spool bush 19 and the runner lock pin 20 are fixed to the fixed side mounting plate 14 and pass through the fixed side mounting plate 14 and the runner stripper plate 13. As shown in FIG. 1, when the molding apparatus 10 is closed, it is disposed so as to face the first runner groove 16 formed in the runner stripper plate 13, and the spool hole 21 is connected to the first runner groove 16. .

  In the following, the resin portion formed by the first runner groove 16 is formed by the first runner portion 16R, the resin portion formed by the second runner groove 17 is formed by the second runner portion 17R, and the spool hole 21. This resin portion is called a spool portion 21R. Further, the resin portion formed by the first runner groove 16, the second runner groove 17, and the spool hole 21, that is, the resin portion formed by connecting the first runner portion 16R, the second runner portion 17R, and the spool portion 21R is spooled. It shall be called a runner SR. In addition, runner resin is comprised by the spool runner SR.

  The runner stripper plate 13 is provided with a push pin 22 as an urging member included in the pushing means between the spool bush 19 and the runner lock pin 20. The push pin 22 is disposed on the surface on the fixed mold 12 side, and is stored in a position protruding from the fixed mold 12 and inside the runner stripper plate 13 under the control of a control means (not shown). The spool runner SR is pushed out to the fixed side template 12 side. The configuration of the runner lock pin 20 and the push pin 22 will be described later.

  In the molding apparatus 10 according to the present embodiment, the movable side mold plate 11 and the fixed side mold plate 12 are connected by an upper link mechanism 23 so as to be movable in the left-right direction shown in FIG. 1, and the fixed side mold plate 12 and the runner stripper are connected. The plate 13 is connected by a lower link mechanism 24 so as to be movable in the left-right direction shown in FIG. These upper link mechanism 23 and lower link mechanism 24 shift the molding apparatus 10 to the state shown in FIGS. 2 and 3 under the control of a control means (not shown).

  Here, the configuration of the runner lock pin 20 and the push pin 22 included in the molding apparatus 10 according to the present embodiment, and the configuration of the fixed-side template 12 and the spool bush 19 will be described with reference to FIGS.

  FIG. 4 is a side sectional view for explaining the configuration of the runner lock pin 20 and the push pin 22 included in the molding apparatus 10 according to the present embodiment. FIG. 4A shows a state in which the runner stripper plate 13 is not separated from the fixed side mounting plate 14 and the push pin 22 is housed inside the runner stripper plate 13 (FIGS. 1 and FIG. 4). 2). FIG. 4B shows a state where the runner stripper plate 13 is separated from the fixed-side mounting plate 14 and the push pin 22 is moved to the fixed-side template 12 side, as will be described later (FIG. 3). State shown).

  As shown in FIG. 4, the runner lock pin 20 has a cylindrical shape and is disposed at a position where it is accommodated in a hole 13 a formed in the runner stripper plate 13. A locking portion 20 a is formed at the tip of the runner lock pin 20. The locking portion 20a is set such that the diameter of the left end is larger than the diameter of the right end. For this reason, when the dissolved resin that has entered the hole 13a is solidified, the resin portion is locked with the large-diameter portion of the locking portion 20a, and the spool runner SR is prevented from easily falling off. As shown in FIG. 4A, in the state where the runner stripper plate 13 is not separated from the fixed side mounting plate 14, the left end of the locking portion 20a is the surface position of the runner stripper plate 13. It is in a consistent state.

  When the runner stripper plate 13 is separated from the fixed side mounting plate 14 from the state shown in FIG. 4A, the runner lock pin 20 is relatively moved to the back side of the hole 13a, as shown in FIG. 4B. In addition, the tip of the locking portion 20a is slightly exposed from the hole 13a. When the runner lock pin 20 moves to the back side of the hole portion 13a, the resin portion solidified in the hole portion 13a is pushed out by the inner wall surface of the hole portion 13a and released from the locking of the locking portion 20a. Become. In FIG. 4, the runner lock pin 20 is shown with its tip moving to a position 2 mm deep from the surface of the runner stripper plate 13.

  On the other hand, the push pin 22 is accommodated in a hole 13 b formed in the runner stripper plate 13. The hole 13b is provided in a shape that does not allow the dissolved resin to enter. The push pin 22 is accommodated in the hole 13b in a state where the coil spring 22a is disposed on the back side of the hole 13b. As shown in FIG. 4A, when the push pin 22 is housed in the runner stripper plate 13, the left end of the push pin 22 coincides with the surface position of the runner stripper plate 13. It is in a state.

  From the state shown in FIG. 4A, when the push pin 22 moves to the stationary mold plate 12 side, the tip of the push pin 22 protrudes from the surface of the runner stripper plate 13 and is attached to the surface of the runner stripper plate 13. The SR is peeled off and dropped. In FIG. 4, the push pin 22 is shown with its tip protruding from the surface of the runner stripper plate 13 by 3 mm.

  In the molding apparatus 10 according to the present embodiment, the spool runner SR is locked by such a runner lock pin 20, so that the spool runner SR can be efficiently locked by a part of the spool runner SR. It becomes. In addition, since the push pin 22 as the urging member is disposed in the vicinity of the runner lock pin 20, the lock of the spool runner SR by the runner lock pin 20 is efficiently released, so that the spool runner SR is surely secured. It is possible to extrude to the fixed side template 12 side.

  Next, the structure of the stationary side template 12 included in the molding apparatus 10 according to the present embodiment will be described. FIG. 5 is a front view for explaining the configuration of the stationary template 12 included in the molding apparatus 10 according to the present embodiment. In addition, in FIG. 5, it has shown about the front view at the time of seeing the stationary-side template 12 from the right side shown in FIG.

  As shown in FIG. 5, two grooves 12a and 12b are formed on the surface of the fixed-side template 12 in the left-right direction shown in the figure, and the grooves 12a and 12b are formed in the vertical direction shown in the figure. A groove portion 12c orthogonal to the center portion is formed. The first runner grooves 16 described above are configured by these groove portions 12a to 12c. And the hole parts 12d-12g which penetrate the stationary-side template 12 are formed in the both ends in each of the groove parts 12a and 12b in the back | inner side shown in FIG. These hole portions 12d to 12g constitute the second runner groove 17 described above.

  Next, the configuration of the spool bush 19 included in the molding apparatus 10 according to the present embodiment will be described. FIG. 6 is an enlarged view for explaining the configuration of the spool bush 19 included in the molding apparatus 10 according to the present embodiment. Specifically, a front view and a side sectional view of the spool bush 19 included in the molding apparatus 10 according to the present embodiment are shown. In particular, the front view shown in FIG. 6 shows the case where the spool bush 19 is viewed from the left side shown in FIG.

  As shown in FIG. 6, the spool bush 19 has a cylindrical shape having a large diameter portion at one end portion (end portion on the fixed side mounting plate 14 side), and a spool hole 21 is formed in the central portion thereof. Yes. Grooves 21a and 21b constituting a part of the rotational force applying means are formed in the vicinity of the end of the spool hole 21 on the fixed mold 12 side. The groove portions 21a and 21b are formed so as to slightly protrude from the spool hole 21 to the side of the forming apparatus 10, respectively. Further, the push pin 22 is formed so as to be inclined with respect to the pushing direction of the spool runner SR. Specifically, the groove 21a is slightly inclined upward as shown in FIG. 6 as it proceeds to the back side (fixed side mounting plate 14 side) shown in FIG. On the other hand, the groove portion 21b is slightly inclined downward as shown in FIG. 6 as it proceeds to the back side (fixed side mounting plate 14 side) shown in FIG.

  When the injected molten resin is solidified in the spool bush 19 and the runner stripper plate 13, the spool runner SR shown in FIG. 7 is formed. FIG. 7 is an enlarged view of the spool runner SR molded by the molding apparatus 10 according to the present embodiment. 7A shows the case seen from the right side shown in FIG. 1, and FIG. 7B shows the case seen from the front side shown in FIG.

  As shown in FIG. 7, the spool runner SR has a first runner portion 16R having a shape corresponding to the grooves 12a to 12c shown in FIG. 5 and a second shape having a shape corresponding to the holes 12d to 12g shown in FIG. The runner portion 17R and a spool portion 21R having a shape corresponding to the spool hole 21 shown in FIG. A rib 21c and a rib 21d having shapes corresponding to the groove 21a and the groove 21b are formed at positions near the first runner 16R in the spool 21R. The rib 21c and the rib 21d constitute a part of the rotational force applying means.

  Next, the process in the case of shape | molding the product P in the shaping | molding apparatus 10 which has the said structure is demonstrated. When the product P is molded in the molding apparatus 10 according to the present embodiment, molten resin is injected from the spool hole 21 and the cavity 15 via the first runner groove 16, the second runner groove 17, and the pinpoint gate 18. Filled in. Thereby, as shown in FIG. 1, the 1st runner groove | channel 16, the 2nd runner groove | channel 17, the pinpoint gate 18, and the cavity 15 will be in the state filled with melted resin.

  Then, after the molten resin filled in the cavity 15 is solidified, first, as shown in FIG. 2, the fixed-side template 12 and the runner stripper plate 13 are separated by the lower link mechanism 24. When the stationary-side template 12 and the runner stripper plate 13 are separated, the first runner portion 16R is locked by the runner lock pin 20, so that the second runner portion 17R is cut off at the position of the pinpoint gate 18. (Gate cut). In this case, the push pin 22 maintains the state accommodated in the runner stripper plate 13. In FIG. 2, a part 18a of the pinpoint gate 18 generated by the gate cut is shown.

  After performing the gate cut, as shown in FIG. 3, the fixed-side template 12 and the movable-side template 11 are separated by the upper link mechanism 23. When the fixed side mold plate 12 and the movable side mold plate 11 are separated, the cavity 15 is exposed, and the product P molded in the cavity 15 can be released. Further, the fixed side mold plate 12 and the runner stripper plate 13 are separated from each other by the lower link mechanism 24, and the fixed side mounting plate 14 and the runner stripper plate 13 are separated. By separating the fixed side mold plate 12 and the runner stripper plate 13, a space in which the spool runner SR can fall is secured between the fixed side mold plate 12 and the runner stripper plate 13. Further, when the fixed side mounting plate 14 and the runner stripper plate 13 are separated, the runner lock pin 20 relatively moves to the right side of the runner stripper plate 13 as shown in FIG. The spool runner SR is released from the locking of the runner lock pin 20.

  In this way, the fixed side mounting plate 14 and the runner stripper plate 13 are separated, and at the same time, the push pin 22 is moved to the fixed side mold plate 12 side. When the push pin 22 moves to the fixed side template 12 side, the tip of the push pin 22 protrudes from the runner stripper plate 13 as shown in FIG. The runner SR is pushed out to the fixed template 12 side and dropped.

  In this case, as shown in FIGS. 6 and 7, the spool runner SR has grooves 21a and 21b formed on the spool bush 19, while ribs 21c and 21d are formed on the spool 21R. The spool runner SR pushed out by the push pin 22 is given a rotational force. Therefore, the spool runner SR falls while slightly changing the angle. As a result, a situation in which the second runner portion 17R enters the holes 12d to 12g formed in the runner stripper plate 13 and the spool runner SR is caught on the runner stripper plate 13 is prevented.

  As described above, according to the molding apparatus 10 according to the present embodiment, when the spool runner SR locked to the runner stripper plate 13 by the runner lock pin 20 is pushed out to the fixed mold plate 12 side, the rotational force applying means ( When the spool runner take-out machine is not used, a rotational force is applied to the spool runner SR by the grooves 21a and 21b formed in the spool hole 21 and the ribs 21c and 21d formed in the spool portion 21R. In addition, since the spool runner SR can be removed while preventing the spool runner SR from being caught in a hole or the like formed in the runner stripper plate 13, the productivity of the product can be reduced while reducing the cost required for the entire apparatus. Can be improved.

  In particular, in the molding apparatus 10 according to the present embodiment, the rotational force applying means is composed of groove portions 21a and 21b formed in the spool hole 21 and ribs 21c and 21d formed in the spool portion 21R. Therefore, it is possible to apply a rotational force to the spool runner SR simply by forming the groove portions 21a and 21b in the spool hole 21, and therefore, compared with a conventional molding apparatus using a spool runner resin take-out machine. It is possible to reduce the cost required for the whole.

  Further, in the molding apparatus 10 according to the present embodiment, since the groove portions 21a and 21b are inclined with respect to the direction in which the spool runner SR is pushed out, along the groove portions 21a and 21b when the spool runner SR is pushed out. As the ribs 21c and 21d corresponding to this advance, the spool runner SR can be reliably rotated. In particular, since the plurality of groove portions 21a and 21b are formed in the spool hole 21, the plurality of ribs 21c and 21d corresponding to the plurality of groove portions 21a and 21b advance along the plurality of groove portions 21a and 21b. A rotational force can be applied to the spool runner SR.

  Furthermore, in the molding apparatus 10 according to the present embodiment, since the spool hole 21 is formed in the spool bush 19 accommodated in the runner stripper plate 13, for example, a groove 21a formed in the spool hole 21, Even when 21b is damaged, it is possible to apply rotational force to the spool runner SR again simply by replacing the spool bush 19. In addition, a plurality of spool bushes 19 having different inclinations of the groove portions 21a and 21b are prepared in advance, and the spool bushes 19 are exchanged corresponding to resin materials having different characteristics, so that the spool runners are molded from various resin materials. It is possible to effectively apply a rotational force to SR.

  In addition, this invention is not limited to the said embodiment, It can change and implement variously. In the above-described embodiment, the size, shape, and the like illustrated in the accompanying drawings are not limited to this, and can be appropriately changed within a range in which the effect of the present invention is exhibited. In addition, various modifications can be made without departing from the scope of the object of the present invention.

  For example, in the above-described embodiment, the push pin 22 is illustrated as an example of the pushing means, but the configuration of the pushing means is not limited to this, and can be changed as appropriate. Any configuration may be used as long as the spool runner SR attached to the runner stripper plate 13 can be pushed out to the fixed side template. For example, the configuration of the push pin 22 or the like is not necessarily required. When separating the runner stripper plate 13 from the fixed side mounting plate 14, when the spool runner SR is pushed out to the fixed side template side, It is also possible to configure the separation mechanism as an extrusion means. Even when the pushing means is deformed in this way, the same effect as in the above embodiment can be obtained.

  In the above embodiment, the spool hole 21 is formed in the spool bush 19 that can be attached to and detached from the runner stripper plate 13, but the position where the spool hole 21 is formed is limited to this. It is not a thing, and it can change suitably. For example, it is possible to form the spool hole 21 directly in the runner stripper plate 13. Even when the formation position of the spool hole 21 is changed as described above, it is possible to obtain the same effect as in the above embodiment.

It is a schematic block diagram when the shaping | molding apparatus which concerns on one embodiment of this invention is closed. It is a schematic block diagram in case the shaping | molding apparatus which concerns on the said embodiment is partially opened. It is a schematic block diagram when the shaping | molding apparatus which concerns on the said embodiment is open completely. It is a sectional side view for demonstrating the structure of the runner lock pin and push pin which the molding apparatus which concerns on the said embodiment has. It is a front view for demonstrating the structure of the stationary-side template which the shaping | molding apparatus which concerns on the said embodiment has. It is an enlarged view for demonstrating the structure of the spool bush which the molding apparatus which concerns on the said embodiment has. It is an enlarged view of the spool runner formed with the shaping | molding apparatus which concerns on the said embodiment. It is a schematic block diagram when the conventional shaping | molding apparatus is closed. It is a schematic block diagram in case the conventional shaping | molding apparatus is partially opened. It is a schematic block diagram when the conventional shaping | molding apparatus is completely open.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Movable side template 12 Fixed side template 12a-12c Groove part 12d-12g Hole part 13 Runner stripper plate 13a, 13b Hole part 14 Fixed side mounting plate 15 Cavity 16 1st runner groove 16R 1st runner part 17 2nd runner groove 17R 2nd runner part 18 Pin point gate 19 Spool bush 20 Runner lock pin 21 Spool hole 21a, 21b Groove part 21c, 21d Rib 21R Spool part 22 Push pin 23 Upper link mechanism 24 Lower link mechanism SR Spool runner

Claims (8)

  A movable mold plate in which a cavity is formed, a fixed mold plate in which a first resin transfer path connected to the cavity is formed, and a second resin transfer path connected to the first resin transfer path A molding apparatus for separating runner resin molded in the first and second resin transfer paths from molded resin molded in the cavity, the runner resin being separated from the runner resin A locking means for locking to the stripper plate, an extrusion means for pushing out the runner resin locked by the locking means to the fixed side template, and a rotational force to the runner resin pushed out by the pushing means And a rotational force applying means.   The said rotational force provision means is comprised by the groove part formed in the said 2nd resin transfer path | route, and the rib formed in the said runner resin corresponding to the said groove part, The characterized by the above-mentioned. Molding equipment.   The molding apparatus according to claim 2, wherein the groove portion is inclined with respect to an extrusion direction of the runner resin by the extrusion means.   The molding apparatus according to claim 2 or 3, wherein a plurality of the groove portions are formed in the second resin transfer path.   The molding apparatus according to claim 2, wherein the second resin transfer path is formed in a spool bush accommodated in the runner stripper plate.   The molding device according to claim 1, wherein the locking means includes a runner lock pin that locks a part of the runner resin.   The molding apparatus according to any one of claims 1 to 6, wherein the pushing means has a biasing member that biases a part of the runner resin toward the fixed side template.   8. The molding apparatus according to claim 7, wherein the urging member is disposed in the vicinity of the locking means.

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