JP5326814B2 - Injection mold equipment - Google Patents

Description

  The present invention relates to an injection mold apparatus for molding an exterior casing component that requires a high-quality appearance in resin injection molding.

  As an injection mold apparatus for molding an exterior casing component that requires a high-quality appearance in conventional resin injection molding, the resin is finally filled as shown in FIG. 9 when the molded product is molded. There is one in which a resin flow restricting portion 20 is provided in the vicinity of the position (see, for example, Patent Document 1). 9 is a perspective view showing a conventional disk cartridge having a flow restricting portion described in Patent Document 1. FIG. 10 is an enlarged perspective view of the shutter, FIG. 11A is a front view of the shutter, and FIG. It is sectional drawing of a -B line.

  11A and 11B, the resin that has reached the flow restricting portion 20 from the lower right portion of the rectangular opening at the time of molding of the shutter 34 has its flow passage cross-sectional area reduced by the flow restricting portion 20, and the flow front end is reduced. It solidifies and stops flowing. Thereafter, the resin that has entered from the left side of the opening reaches the flow restricting portion 20 and the filling is completed. As a result, there is a device that intentionally controls the variation in the position where the resin is finally filled.

JP-A-4-278270

  However, in the product as shown in FIG. 12A in the conventional configuration, the flow restricting portion 20 is provided, thereby restricting the flow area of the molding space in the mold and stopping the flow of resin from one side. In the flow front (flow front end portion) on the side where the resin flow is stopped, cooling and solidification starts before the flow front of the resin flowing from the other side. For this reason, there is a problem that strong weld lines are generated at the meeting portion of the resin. A weld line refers to a V-notch-like or thread-like thin linear trace that occurs at a place where two or more flow fronts meet.

  In addition, the -Y direction and + Z direction surfaces of the molded product shape shown in FIG. 12B are product appearance surfaces, and the flow restricting portion 20 stops the flow of resin from one side, so the filling end portion is the flow restricting portion. 20 is the upper portion 35 of the flow restricting portion 20 whose flow passage cross-sectional area is reduced, and the above-described weld line is generated on the product appearance surface (the upper portion 35 of the flow restricting portion), resulting in a poor appearance.

  Furthermore, as shown in FIGS. 13A and 13B, the shape of the flow restricting portion 20 itself is exposed to the appearance surface of the product and has a problem that the appearance of the product is impaired.

  The present invention solves the above-described conventional problems, and controls the filling end portion by limiting the shape of the flow restricting portion without being exposed to the appearance surface of the product and without stopping the flow of the resin. Therefore, an object of the present invention is to provide an injection mold apparatus that suppresses the occurrence of a strong weld line and prevents the occurrence of a resin-filled end portion on the appearance of the product.

In order to achieve the above object, the injection mold apparatus according to the first aspect of the present invention has one each on the left and right with a filling end portion at an arbitrary side of the frame-shaped portion included in the molded product as a center. The flow restricting portion of the resin provided as described above has a trapezoidal cross section in the short direction of the frame-shaped portion, and the angle formed by the mold dividing surface and the trapezoidal slope is the inner circumference. The slope on the side is set larger than the slope on the outer peripheral side .

  The invention described in claim 2 is characterized in that, in the injection mold apparatus of claim 1, the flow restricting portion is arranged to be biased toward the inner peripheral side from the center in the longitudinal direction of the frame-like portion. To do.

In addition, the invention described in claim 3 includes a flow restricting portion of resin provided at least one on each of the left and right sides with respect to a filling end portion on an arbitrary side of the frame-shaped portion included in the molded product. However, it is composed of a mold part that is separate from the mold part that forms the molding space. The part material is different between the flow restricting part and the mold part, and the thermal conductivity of the part material is higher in the flow restricting part than in the mold part. It is large.

In addition, the invention described in claim 4 includes a flow restricting portion of resin provided at least one on each of the left and right sides with respect to a filling end portion on an arbitrary side of the frame-shaped portion included in the molded product. It has an insertion part that is placed on the upper part and has a connection opening hole with a bent shape that divides the flow of the resin, and a connection hole that is placed on the upper part of the filling end, and is inserted between the resin and integrated with the molded product. The flow of the resin to the filling end portion is created by the connection opening hole and the connection hole.

  According to the above configuration, the flow restricting portion that is not exposed to the external appearance surface of the molded product is formed on the left and right sides of the filling end portion on any one side of the molded product having the frame-shaped portion, and the resin By controlling the flow, the filling end can be controlled.

  According to the present invention, when the molded product is molded, the position where the resin is finally filled is intentionally controlled, generation of a strong weld line is suppressed, and the shape of the flow restricting portion is on the outer surface of the molded product. The exposed end of the molded product is shifted to the non-appearance surface without being exposed, and an effect is obtained that a molded product with good appearance quality can be obtained.

The figure which shows the structure of the molded article in Embodiment 1 of this invention. (A) of the molded product in FIG. 1 is a diagram showing a hidden line with a broken line, and (b) is an enlarged perspective view of a flow regulating portion. Sectional drawing of the CC line of the molded article of FIG. Flow chart showing steps (a) to (e) of resin flow at the filling end in the first embodiment. The figure which shows the structure of the metal mold components in Embodiment 2 of this invention. The flowchart which shows the process (a)-(e) of the resin flow of the filling terminal part in this Embodiment 2. FIG. (A) in Embodiment 3 of this invention is a figure which shows the molded article which has insert components in a frame-shaped part, (b) is an expansion perspective view of a flow control part vicinity, (c) is an expansion perspective view of insert parts It is a flowchart of process (a)-(e) of the resin flow of the filling end part in this Embodiment 3. FIG. A perspective view showing a disk cartridge of a conventional molded product Enlarged perspective view of the shutter of the disk cartridge (A) is a front view of a shutter, (b) is a cross-sectional view taken along line BB. (A) of a conventional molded product is a perspective view, (b) is an enlarged perspective view of a flow regulating portion. 12A is a front view of the flow restricting portion, and FIG. 12B is a cross-sectional view taken along line AA.

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

(Embodiment 1)
FIG. 1 is a diagram showing the configuration of a molded product according to Embodiment 1 of the present invention. In FIG. 1, 1 is a molded product, 2 is a frame-like portion included in the molded product 1, 3 is a gate portion of the molded product 1, 4 is an opening included in the molded product 1, and 5 is a counterpart part of the molded product 1. . 2 (a) shows the hidden line of the molded product of FIG. 1 by a broken line, 20 is a flow restricting portion, (b) is an enlarged perspective view of the flow restricting portion, and FIG. 3 is a cross-sectional view taken along line CC in FIG. The figure is shown.

  2 (a) and 2 (b), when the molded product 1 having the frame-shaped part 2 is molded, the last resin-filled position on one side of the frame-shaped part 2 (hereinafter referred to as the filling end). The resin flow restricting portion 20 is configured to the left and right in the longitudinal direction of one side. The shape of the flow restricting portion 20 is preferably a three-dimensional shape, and serves to control the flow of resin in the front (Z), left side (X), and lower side (Y) directions in the vicinity of the filling end to be described later. Plays. Further, the flow restricting portion 20 is configured so as not to be exposed to the appearance surface of the molded product 1. As shown in FIGS. 3A and 3B, the final filling end portion is the opening 4 side (inner circumference) of the frame-like portion 2 of the molded product 1, and is the −Z side of the molded product 1. It is most desirable to control the position of the filling end 6 on the non-appearance surface.

  In FIG. 2B, the direction viewed from the −Z direction is the front direction, and when viewed from the front direction, the shape of the flow restricting portion 20 is an inverted triangle. Thereby, since the resin flow path is wider on the outer peripheral side of the frame-like part 2 than on the inner peripheral side, the resin flows first from that part, and therefore, the inner end of the frame-like part 2 is less noticeable as the appearance of the molded product. It plays the role of moving to the circumference side.

  2B is the left side direction as viewed from the X direction, and the shape of the flow restricting portion 20 when viewed from the left side direction of the frame-shaped portion 2 (the short direction of the frame-shaped portion 2). Has a trapezoidal shape. The slope of the slope of each trapezoidal shape and the dividing surface of the mold is set so that the slope of the slope on the outer peripheral side of the frame-like part 2 is set smaller than the slope of the slope on the inner peripheral side of the frame-like part 2. Is also arranged at a position deviated from the center in the longitudinal direction of the frame-shaped part 2 toward the inner peripheral side of the frame-shaped part 2. As a result, since the resin flow path in the + Z direction of the molded product 1 is widened on the outer peripheral side of the frame-shaped portion 2, the resin flows first from that portion, and the frame-shaped portion is less noticeable as the molded product appearance. 2 is moved to the inner peripheral side of the molded product 1 and moved to the −Z side of the molded product 1.

  Moreover, what was seen from the Y direction in FIG. 2B is the lower side direction, and when viewed from the lower side direction, the shape of the flow restricting portion 20 is triangular. Thereby, the flow of the resin is regulated in the + Z direction of the molded product 1, and the filling end portion is moved to the −Z side of the molded product 1 which is hardly noticeable as the molded product appearance.

  3A and 3B, there is a parting line 7 (partition surface of the mold) in the vicinity of the −Z side of the molded product 1, which is moved to the −Z side of the molded product 1 by the flow restricting unit 20. For example, by providing an air vent on the dividing surface of the mold with a depth of 10 μm, a width of 4 mm, and a land of 2 mm aiming at the filling end portion 6, the air in the molding space from the filling end portion 6 and the gas generated from the resin are efficient. Is efficiently discharged, and efficient molding becomes possible.

  FIG. 4 is a flowchart of steps (a) to (e) of resin flow at the filling end portion in the first embodiment. The resin flow in the front, left side, and lower side directions at the filling end portion 6 will be described with reference to FIGS.

  In FIG. 4, steps (a) to (e) show the resin flow in the front, left side, and lower side direction of the filling end portion in time series.

  The resin injected from the gate portion 3 flows through the molding space and reaches the filling end portion 6 having the flow restricting portion 20.

  In the step (a) of FIG. 4, the resin flow front advances from the left and right sides toward the filling end portion 6 in the front and lower side directions. The flow front of the resin has not yet reached the DD cross section in the left lateral direction.

  In the step (b) of FIG. 4, the resin flow front contacts the flow restricting portions 20 from the left and right sides in the front and lower side directions.

  In the front direction, the flow passage cross-sectional area on the inner peripheral side of the frame-like portion 2 is limited by the inverted triangular shape of the flow restricting portion 20. On the outer peripheral side of the frame-shaped part 2, the flow cross-sectional area is once restricted by the flow restricting part 20, but thereafter, the restriction is loosened. It progresses in advance on the outer peripheral side of the frame-shaped part 2 which has a large area and is easy to flow.

  In the lower surface direction, the flow path is restricted in the + Z direction of the molded product 1 by the triangular shape of the flow restricting portion 20. Therefore, the flow front of the resin that contacts the flow restricting portion 20 flows along the shape of the flow restricting portion 20 and proceeds in the + Z direction of the molded product 1.

  The flow front of the resin has not yet reached the DD cross section in the left lateral direction.

  In the step (c) of FIG. 4, the resin flow front advances from the left and right sides beyond the shape of each flow restricting portion 20 in the front and lower side directions.

  In the front direction, the phenomenon appearing in the step (b) occurs more remarkably. The flow of the resin on the inner peripheral side of the frame-shaped portion 2 whose flow path cross-sectional area is limited by the flow restricting portion 20 is delayed compared to the flow on the outer peripheral side of the frame-shaped portion 2 where the flow cross-sectional area is easy to flow, and conversely The flow on the outer peripheral side of the frame-shaped part 2 where the cross-sectional area of the flow passage part 20 extends beyond the inverted triangular apex of the flow restricting part 20 is accelerated.

  In the lower surface direction, the flow front of the resin exceeds the triangular apex of the flow restricting portion 20, and the flow path cross-sectional area increases. Therefore, the flow on the + Z direction side of the molded product 1 proceeds in advance.

  The flow front of the resin has not yet reached the DD cross section in the left lateral direction.

  In the step (d) of FIG. 4, the flow front of the resin meets in the vicinity of the filling end portion 6 from the left and right sides in the front and lower side directions.

  In the front direction, the flow on the outer peripheral side of the frame-shaped part 2 flows ahead of the inner peripheral side, and the flow fronts of the resin on both the left and right sides in the DD section are directed from the outer peripheral side to the inner peripheral side of the frame-shaped part 2. Meeting. The associated resin changes its direction and proceeds from the outer peripheral side to the inner peripheral side of the frame-like portion 2.

  In the lower surface direction, the flow in the + Z direction of the preceding molded product 1 proceeds, and the flow fronts of the resin on both the left and right sides meet from the + Z direction to the −Z direction of the molded product 1 in the DD section. Go. The associated resin changes its direction from the + Z direction to the −Z direction of the molded article 1 and proceeds.

  In the left side surface direction, the resin is filled from the + Z direction of the molded product 1 on the outer peripheral side of the frame-shaped portion 2, and proceeds toward the −Z direction of the molded product 1 on the inner peripheral side of the frame-shaped portion 2.

  In step (e) of FIG. 4, the resin filling is completed in the front, lower, and left side directions.

  In the front direction, the position of the DD cross section becomes the final filling end portion 6 on the inner peripheral side of the frame-like portion 2, and the filling of the resin is completed.

  In the lower surface direction, the position of the DD cross section in the −Z direction of the molded product 1 becomes the final filling end portion 6 and the resin filling is completed.

  In the left side surface direction, the position of the DD cross section in the −Z direction of the molded product 1 on the inner peripheral side of the frame-like portion 2 becomes the final filling end portion 6 and the resin filling is completed.

  In order to control the filling end portion 6 by creating such a resin flow by the flow restricting portion 20, the occurrence of a strong weld line is suppressed, and the resin filling end portion 6 is generated on the appearance surface of the molded product 1. It becomes possible to prevent.

(Embodiment 2)
FIG. 5 is a diagram showing the configuration of the mold part in the second embodiment of the present invention.

  In FIG. 5, 8 is the upper mold of the mold part that forms the molding space, 9 is the lower mold of the mold part that forms the molding space, and 10 is the flow regulating part.

  FIG. 6 is a flowchart of steps (a) to (e) of resin flow at the filling end portion in the second embodiment. In FIG. 6, the same components as those in FIG.

  In FIG. 5, the flow restricting portion 20 shown in the first embodiment is configured by a separate part (flow restricting part 10) from the upper mold 8 and the lower mold 9 of the mold part forming the molding space. When the thermal conductivity of the material of the flow regulating component 10 is A, and the thermal conductivity of the material of the upper mold 8 and the lower mold 9 forming the molding space is B and C, respectively, A> B, A> The material is C.

  As an example, if the material of the flow restricting component 10 is copper (thermal conductivity at 20 ° C. is 372 W / mk), and the material of the upper mold 8 and the lower mold 9 is carbon steel (thermal conductivity at 20 ° C. is 53 W / mk). As compared with the case where the flow restricting part 10 is made of carbon steel, the cooling effect is about 7 times. According to such a configuration, the flow control of the resin can be more reliably performed by highly efficient heat exchange.

  Steps (a) to (e) in FIG. 6 show the resin flow in the front, left side, and lower side direction of the filling end portion 6 in time series.

  The flow of resin in each step of steps (a) to (e) in FIG. 6 is basically the same as the flow of resin in each step of steps (a) to (e) in FIG. Therefore, only the parts different from the flow of FIG. 4 will be described.

  In the step (b) of FIG. 6, the resin flow front contacts the flow restricting parts 10 from both the left and right sides in the front and lower side directions. Since the flow restricting component 10 is made of a material having a higher thermal conductivity than the material of the upper die 8 and the lower die 9, the high temperature resin that has contacted the flow restricting component 10 is in contact with the flow restricting component 10. , Perform highly efficient heat exchange. As a result, the resin flow front in contact with the flow restricting component 10 is cooled and solidified faster by the thermal conductivity of the material than the resin flow front in contact with the upper mold 8 and the lower mold 9. The flow becomes slower.

  In the front direction, the flow of the resin in the portion in contact with the flow restricting component 10 is delayed, and the flow of the resin on the outer peripheral side of the frame-like portion 2 proceeds more reliably and in advance.

  In the lower surface direction, the flow of the resin in the portion in contact with the flow restricting component 10 is delayed similarly to the front direction, and the flow of the resin in the + Z direction of the molded product 1 proceeds more reliably and in advance.

  In the step (c) of FIG. 6, the resin flow front advances from the left and right sides beyond the shape of each flow regulating component 10 in the front and lower side directions. The portion of the resin that comes into contact with the flow restricting component 10 performs high-efficiency heat exchange, and cooling and solidification are promoted, so that the flow rate becomes slow. Therefore, the resin flow in the step (c) of FIG. 6 becomes a more remarkable resin flow than the step (c) of FIG. 4 in the first embodiment.

  By creating such a flow of resin by the flow restricting component 10, it is possible to more reliably prevent the resin-filled end portion 6 from being generated on the appearance surface of the molded product 1 than in the first embodiment. .

(Embodiment 3)
FIG. 7A is a view showing a molded product having an insert part in the frame-like portion according to Embodiment 3 of the present invention, FIG. 7B is an enlarged perspective view in the vicinity of the flow restricting portion, and FIG. FIG. 8 is an enlarged perspective view of parts, and FIG. 8 is a flowchart of steps (a) to (e) of resin flow at the filling end portion in the third embodiment.

  As shown in FIG. 7A, the opening 4 in the frame-like portion 2 included in the molded product 1 in the first embodiment is configured with an insert part 11. As shown in FIG. 7 (b), the insert part 11 is integrated with the molded product 12 so as to be sandwiched between the resin of the frame-like portion 2. In addition, as shown in FIG. 7C, the insert part 11 has a punched bent shape 13 for inducing resin flow, and a connecting opening hole 15 formed when the connecting hole 14 and the punched bent shape 13 are formed by punching. doing.

  8, the same components as those in FIGS. 4 and 6 are denoted by the same reference numerals, and redundant description is omitted. Steps (a) to (e) represent the flow of resin in the front, left side, and lower side direction of the filling end portion 6 in time series.

  The resin injected from the gate portion 3 shown in FIG. 7 flows through the molding space, and enters the filling end portion 6 having the flow restricting portion 20 while flowing through the two molding spaces in the + Z direction and the −Z direction separated by the insert part 11. To reach.

  In the step (a) of FIG. 8, the resin flow front advances from the left and right sides toward the filling end portion 6 in the front and lower side directions. The flow front of the resin has not yet reached the FF cross section in the left lateral direction.

  In the step (b) of FIG. 11, the resin flow front contacts the flow restricting portion 20 and the drafted shape 13 from the left and right sides in the front and lower side directions.

  In the front direction, the molding space in the + Z direction proceeds toward the filling end portion 6.

  In the molding space in the −Z direction, the flow in the front direction in step (b) of FIG. 4 in the first embodiment is substantially the same.

  In the lower surface direction, the molding space in the + Z direction is in contact with the drafted shape 13 of the insert part 11. The punched and bent shape 13 of the insert part 11 has a connecting opening hole 15 that connects the forming spaces in the + Z direction and the −Z direction that can be formed by punching the punched and bent shape 13. From this connection opening hole 15, the flow front of the resin flowing in the molding space in the + Z direction tries to flow into the molding space in the -Z direction, but the resin also flows into the molding space in the + Z direction from the molding space in the -Z direction. Therefore, the flow front of the resin in the + Z direction and the resin in the −Z direction meet at the position of the connection opening hole 15.

  In the molding space in the −Z direction, the flow path is regulated in the + Z direction of the molded product 12 by the triangular shape of the flow regulating unit 20. Therefore, the flow front of the resin in contact with the flow restricting portion 20 flows along the shape of the flow restricting portion 20 and proceeds in the + Z direction of the molded product 12. However, in the vicinity of the apex of the flow restricting portion 20, there is a connection opening hole 15 that connects the punched shape 13 of the insert part 11 and the molding space in the + Z direction and the −Z direction. It is divided into a resin flow and a resin flow that flows into the molding space in the -Z direction.

  The flow front of the resin has not yet reached the FF cross section in the left lateral direction.

  In the step (c) of FIG. 8, the resin flow front advances from the left and right sides beyond the shape of the flow restricting portion 20 and the drafted shape 13 in the front and lower side directions.

  In the front direction, in the + Z direction molding space, the resin flow fronts from the left and right directions meet at the FF cross section near the filling end portion 6.

  The molding space in the −Z direction is substantially the same as the flow in the front direction in step (c) of FIG. 4 in the first embodiment.

  In the lower side surface direction, the resin in the −Z direction, which is divided by the punched and bent shape 13 of the insert part 11, flows into the forming space in the + Z direction through the connection opening hole 15. As a result, the flow of the resin flowing in the molding space in the + Z direction flows first in the + Z direction portion of the molded product 12, and the flow front of the resin from the left and right directions in the FF cross section near the filling end portion 6 is the molded product. Meeting from the + Z direction part of 12.

  Although the flow in the molding space in the −Z direction is divided by the drafted shape 13 of the insert part 11, the flow is substantially the same as the flow in the lower surface direction in the step (c) of FIG. 4 in the first embodiment. .

  The FF cross section in the left side surface direction is filled with resin from the + Z direction of the molded product 12, and the flow proceeds toward the −Z direction of the molded product 12.

  In the step (d) of FIG. 8, the flow front of the resin meets in the vicinity of the filling end 6 from the left and right sides in the front and lower side directions.

  In the front direction, in the molding space in the + Z direction, the resin filling is completed at the position of the FF cross section.

  The molding space in the −Z direction is substantially the same as the flow in the front direction in step (d) of FIG. 4 in the first embodiment.

  In the lower side surface direction, the filling of the resin in the + Z direction molding space is completed, and the resin flows in the −Z direction from the connection hole 14 in the meeting portion of the resin in the left and right direction. In the −Z direction, the resin flow front in the + Z direction of the preceding molded product 12 on both the left and right sides and the resin flow front flowing into the molding space in the −Z direction through the connecting hole 14 of the insert part 11 are filled. In the vicinity of the end portion 6, the molded product 12 meets from the + Z direction to the −Z direction. The associated resin changes its direction from the + Z direction to the −Z direction of the molded article 12 and proceeds.

  The FF cross section in the left side surface direction flows from the + Z direction of the molded product 12 toward the −Z direction of the molded product 12, and after filling the molding space in the + Z direction, the connection hole of the insert part 11 14, the process proceeds from the + Z direction of the molded product 12 toward the −Z direction of the molded product 12 toward the molding space in the −Z direction.

  In step (e) of FIG. 8, the resin filling is completed in the front, lower, and left side directions.

  In the front direction, the filling of the resin is completed in the + Z direction molding space at the position of the FF cross section.

  In the molding space in the −Z direction, the position of the FF cross section at the inner peripheral side of the frame-like portion 2 becomes the final filling end portion 6 and the filling of the resin is completed.

  In the lower side surface direction, the filling of the resin in the + Z direction molding space is completed, and the resin flows in the −Z direction from the connection hole 14 in the meeting portion of the resin in the left and right direction.

  In the molding space in the −Z direction, the resin flow front from the left and right direction and the resin flow front from the + Z direction meet in the vicinity of the filling end portion 6, and the position of the FF cross section in the −Z direction of the molded product 12 is final. Filling end portion 6 is completed and resin filling is completed.

  In the left side surface direction, the position of the FF cross section in the −Z direction of the molded product 12 on the inner peripheral side of the frame-shaped portion 2 becomes the final filling end portion 6 and the resin filling is completed.

  Even if there is the insert part 11, such a resin flow is created by the flow restricting part 20 and the insert part 11 to control the filling end part 6. It is possible to prevent the resin-filled end portion 6 from being generated on the external surface.

  Although the present invention has been described with reference to some embodiments, there are many other specific structures that can realize the gist of the present invention, and modifications are easy for those belonging to the industry. Does not depart from the invention.

  INDUSTRIAL APPLICABILITY The injection mold apparatus according to the present invention makes it possible to control the position of the resin filling end portion of the resin molded product, and is effective in the resin injection mold apparatus.

DESCRIPTION OF SYMBOLS 1,12 Molded product 2 Frame-shaped part 3 Gate part 4 Opening 5 Counterpart 6 Filling end part 7 Dividing line 8 Upper mold 9 Lower mold 10 Flow control part 11 Insert part 13 Draw shape 14 Connection hole 15 Connection opening hole 20 Flow Regulator 34 Upper part of shutter 35

Claims (4)

A resin flow restricting portion provided at least one on each of the left and right with a filling end portion on an arbitrary side of the frame-shaped portion included in the molded product ,
The flow restricting portion has a trapezoidal cross-section in the short direction of the frame-shaped portion, and an angle formed between a mold dividing surface and the trapezoidal slope is an inner slope is an outer slope. An injection mold apparatus characterized by being set larger .   The injection mold apparatus according to claim 1, wherein the flow restricting portion is arranged so as to be biased toward an inner peripheral side from a longitudinal center of the frame-like portion. A resin flow restricting portion provided at least one on each of the left and right with a filling end portion on an arbitrary side of the frame-shaped portion included in the molded product,
The flow restricting portion is composed of a mold part and a separate part that form a molding space, the flow restricting portion and the mold part are made of different parts materials, and the thermal conductivity of the component material is equal to the flow restriction. Write parts is it being larger than the mold parts I De molding die apparatus. A resin flow restricting portion provided at least one on each of the left and right with a filling end portion on an arbitrary side of the frame-shaped portion included in the molded product,
A connection opening hole of a bent shape that is disposed at the top of each of the flow restricting portions and divides the flow of the resin, and a connection hole that is disposed at the top of the filling end portion, and is sandwiched between the resin and a molded product, with integral becomes insert part, wherein the connecting opening hole and the connecting hole by the filling end to create a flow of the resin molding die apparatus out morphism it said to.

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