JP2021003850A - Molding apparatus and method for manufacturing base material - Google Patents

Abstract

To provide a molding apparatus capable of favorably mixing resin, and a method for manufacturing a base material.SOLUTION: A molding apparatus 20 is provided with: a mold 21 comprising an upper mold 30 and a lower mold 40 disposed at a position opposite to the upper mold 30; and a resin feeding device 22 for feeding an uncured resin into a cavity C surrounded with an upper mold 30 and a lower mold 40 in a closed mold state. In the molding apparatus, the mold 21 is provided with runners 31 and 41 being the runners 31 and 41 provided on the upper mold 30 and the lower mold 40, and connecting the cavity C and the resin feeding device 22 to allow the uncured resin to pass therethrough. The runners 31 and 41 are provided with obstructive parts 25, 26, and 27 for obstructing the flow of the uncured resin.SELECTED DRAWING: Figure 4

Description

The present invention relates to a molding apparatus and a method for producing a base material.

Conventionally, as a base material, a reinforcing fiber material such as carbon fiber or glass fiber whose rigidity is reinforced is widely used. As an example of such a base material, a resin molded body obtained by solidifying a laminate in which a sheet-shaped reinforcing fiber material is laminated on the front and back surfaces of a core material made of a foamed resin with a thermosetting resin is known. (See, for example, Patent Document 1). This type of resin molded body is molded by using an RTM (Resin Transfer Molding) method. Specifically, with the laminate set in the cavity of the molding die, an uncured thermosetting resin is injected into the cavity, and the resin is impregnated into the reinforcing fiber material of the laminate and then thermoset. By doing so, the above resin molded product is obtained.

As the thermosetting resin, for example, a two-component mixed type epoxy resin composed of a main agent and a curing agent is used. Such a two-component mixed type thermosetting resin is supplied into the molding mold while colliding and mixing the main agent and the curing agent by using a resin supply device provided with a mixing head.

Japanese Unexamined Patent Publication No. 04-224915

In the manufacturing process of this type of base material (resin molded product), if the pressure to supply the uncured resin (thermosetting resin) is high, the core material of the laminate may be crushed, so the resin is applied at a relatively low pressure. Is desirable to be supplied. However, when the supply pressure of the resin is set low, there is a problem that the flow rate is lowered and the main agent and the curing agent are less likely to collide with each other, so that they are less likely to be mixed. Further, if the uncured resin is not mixed well, impregnation and curing of the laminate do not proceed favorably, leading to deterioration of the quality of the base material.

The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a molding apparatus capable of preferably mixing a resin and a method for producing a base material.

In the present invention, an uncured resin is placed in a molding die composed of an upper die and a lower die arranged at a position facing the upper die, and a cavity surrounded by the upper die and the lower die in a closed state. In a molding device including a resin supply device for supplying, the molding die is a passage portion provided in at least one of the upper die and the lower die, and the cavity and the resin supply device are connected to each other. The passage portion is provided with a passage portion through which the uncured resin is passed, and the passage portion is characterized by including an inhibition portion that obstructs the flow of the uncured resin.

According to such a molding apparatus, when the uncured resin is supplied from the resin supply device and passed through the passage portion, the uncured resin is transferred to the passage portion by obstructing the flow of the uncured resin by the obstructing portion. It can be agitated. Thereby, for example, when the uncured resin is composed of the main agent and the curing agent, these can be mixed by colliding with each other by the obstructing portion of the passage portion.

In the above configuration, the passage portion includes an upper mold passage portion provided on the upper mold, a lower mold passage portion provided on the lower mold and provided at a position not overlapping with the upper mold passage portion in a plan view, and the upper mold portion. The mold and the upper and lower passages provided on the lower mold and connecting the upper passage and the lower passage can be provided, and the obstruction can be the upper and lower passages.

According to such a molding device, the uncured resin supplied from the resin supply device passes through the upper and lower passage portions, so that the uncured resin is transferred from the upper mold passage portion to the lower mold passage portion or the lower mold passage portion. It can flow from the section to the upper passage section. Then, the flow of the uncured resin is changed in the vertical direction, and the uncured resin flows through the upper mold passage portion and the lower mold passage portion provided at positions where they do not overlap each other in a plan view, so that the uncured resin flows. Resin is preferably stirred.

The passage portion includes, in at least one of the upper mold and the lower mold, a detour portion that detours in a form that bends from the path that the uncured resin passes the shortest distance, and the obstruction portion is the detour portion. Can be.

According to such a molding device, the uncured resin supplied from the resin supply device passes through the detour portion that bends from the shortest path, so that the uncured resin flows inside the detour portion and the outside of the detour portion. The uncured resin can be agitated by causing a difference in flow velocity between the uncured resin and the uncured resin.

Further, in the present invention, a laminate comprising a core material and a pair of reinforcing fiber materials to be laminated on the front and back surfaces of the core material is impregnated with the uncured resin, and then the uncured resin is applied. A method for producing a base material in which a cured base material is produced by the molding apparatus described above, wherein the upper mold and the lower mold are closed in a form in which the laminate is accommodated in the cavity. The mold closing step and the resin supply step of supplying the uncured resin from the resin supply device to the cavity in which the laminate is housed are included. In the resin supply step, the uncured passage portion is covered with the uncured resin. It is characterized in that the flow of the uncured resin is blocked by the blocking portion through the resin.

According to such a method for producing a base material, the uncured resin can be agitated in the passage portion by inhibiting the flow of the uncured resin supplied from the resin supply device by the obstructing portion. As a result, the laminate can be evenly impregnated with the uncured resin and cured, and the quality of the base material can be improved.

According to the present invention, it is possible to provide a molding apparatus for suitably mixing resins and a method for producing a base material.

Sectional drawing which shows the base material which concerns on Embodiment 1. Cross-sectional view showing the vicinity of the passage portion of the molding apparatus View from above near the passage provided in the lower mold Perspective transmission view showing the vicinity of the passage portion of the molding apparatus Explanatory drawing which shows the process of setting the laminate composed of a core material and a pair of reinforcing fiber base materials in a molding apparatus. Explanatory drawing showing a molding mold in a mold open state Explanatory drawing showing how resin is supplied from a resin supply device in a mold closed state. Explanatory drawing showing how the cavity is filled with resin Explanatory drawing showing how to remove a molded product from a molding mold An enlarged view showing an inhibitory portion in the lower mold according to the second embodiment. Enlarged view showing the inhibitory portion in the lower mold according to the third embodiment.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 9. In this embodiment, a molding apparatus 20 for manufacturing a fiber-reinforced resin molded product (base material) 10 by using the RTM method, and a method for manufacturing the fiber-reinforced resin molded product 10 will be exemplified. With reference to FIG. 2 showing the cross section of the molding apparatus 20, the left-right direction is the X direction, the front-back direction of the paper surface is the Y direction, and the direction orthogonal to the plane formed by these X-direction and Y-direction is the Z-direction. The X and Y directions are horizontal, and the Z direction is vertical. These X, Y, and Z directions are common to each drawing. First, the fiber-reinforced resin molded product 10 manufactured by the molding apparatus 20 will be described with reference to FIG.

FIG. 1 is an explanatory view schematically showing a cross-sectional structure of a fiber-reinforced resin molded product (hereinafter, base material) 10. The base material 10 is lightweight and has high rigidity, and is used as a part of a vehicle seat (for example, a backboard). Such a base material 10 is a thermosetting resin obtained by impregnating and curing the core material 11, the sheet-shaped reinforcing fiber materials 12 and 12 which are laminated on the front and back surfaces of the core material 11, and the reinforcing fiber materials 12 and 12, respectively. It is provided with a resin portion 13 made of. As the thermosetting resin of the resin portion 13, a resin generally used in the RTM method (for example, a two-component mixed type epoxy resin) can be adopted.

The core material 11 is a plate-like body made of synthetic resin (so-called foamed resin) having a closed cell structure, and has a plate-like shape (layered shape) having a thickness larger than that of the reinforcing fiber material 12. As the material of the core material 11, a synthetic resin such as an acrylic resin can be adopted. The core material 11 is composed of one layer (single layer), but is not limited to this, and may be composed of a multilayer structure in which a plurality of core materials 11 are laminated.

The reinforcing fiber material 12 is made of a woven fabric of carbon fibers (carbon fibers) processed into a sheet shape. In addition, glass fiber can be adopted as the material of the reinforcing fiber material 12. For convenience, the reinforcing fiber material 12 laminated on the front side (upper side) of the core material 11 is referred to as a reinforcing fiber material 12A, and the reinforcing fiber material 12 laminated on the back side (lower side) of the core material 11 is referred to as a reinforcing fiber material 12B. In some cases. The thickness of the reinforcing fiber material 12A on the front side is equal to the thickness of the reinforcing fiber material 12B on the back side. The core material 11 has a sandwich structure sandwiched from the front and back sides by a pair of reinforcing fiber materials 12A and 12B.

In the base material 10, the cured product of the thermosetting resin constituting the resin portion 13 is formed so as to cover not only the inside of the reinforcing fiber material 12 but also the surface of the reinforcing fiber material 12. Therefore, in the base material 10, the resin portion 13 is formed so as to wrap the entire laminate composed of the core material 11 and the pair of reinforcing fiber materials 12A and 12B. Thereby, smoothness can be imparted to the surface of the laminated body. Further, since the base material 10 contains the core material 11, it is possible to reduce the amount of the reinforcing fiber material 12 (particularly carbon fiber) used, which is relatively expensive, while maintaining light weight and high rigidity.

Subsequently, the molding apparatus 20 for molding the base material 10 will be described with reference to FIGS. 2 to 7. As shown in FIG. 2, the molding apparatus 20 includes a molding die 21 including an upper die 30 and a lower die 40 arranged downward so as to face the upper die 30, and an upper die 30 and a lower die in a mold closed state. A resin supply device 22 for supplying an uncured resin to the cavity C, which is a space surrounded by 40, is provided. The molding die 21 includes a lower die 40 as a fixed die, which is one split die, and an upper die 30 as a movable die, which is the other split die. The lower mold 40 includes a molding surface 40A for molding the front side of the base material 10. On the other hand, the upper mold 30 includes a molding surface 30A for molding the back side of the base material 10. The upper die 30 is driven up and down in a manner close to or separated from the lower die 40 by an elevating mechanism (reciprocating mechanism) such as a hydraulic cylinder.

As shown in FIG. 6, a state in which the upper mold 30 is arranged at a position separated from the lower mold 40 is called a mold opening state. Then, as shown in FIGS. 2 and 7, a state in which the upper mold 30 is arranged and closed at a position close to the lower mold 40 is called a mold closed state. In the mold 21 in the mold closed state, the space surrounded by the molding surface 30A of the upper mold 30 and the molding surface 40A of the lower mold 40 is the cavity C of the molding mold 21.

As shown in FIG. 7, a seal portion 33 is provided at an end portion of the upper mold 30 in the horizontal direction. In the mold closed state, the seal portion 33 is sandwiched between the lower mold 40 and the upper mold 30, so that the uncured resin leaks to the outside from the cavity C and the runners 31, 41 and the like described later beyond the seal portion 33. It is prevented from being lost.

The resin supply device 22 is a device that supplies the uncured thermosetting resin R to the cavity C in the closed state. The resin supply device 22 of the present embodiment supplies a two-component mixed epoxy resin composed of a main agent and a curing agent into the molding mold 21. The resin supply device 22 includes a mixing head that discharges the main agent and the curing agent to the molding die 21 side. The main agent and the curing agent are each housed in a predetermined tank, and are sent to the mixing head in a predetermined mixing ratio by each pump. Then, the uncured resin R composed of a mixture of the main agent and the curing agent is discharged from the nozzle 23 at the tip of the mixing head. The resin R discharged from the nozzle 23 is supplied to the cavity C via the sprue 32, the runners (passage portions) 31, 41, and the gate 42.

As shown in FIG. 2, the molding die 21 has a sprue 32 and a sprue 32 as injection holes for injecting the uncured resin supplied from the resin supply device 22 into the molding die 21 on the right side of the cavity C. Runners (passage portions) 31, 41 for passing the resin flowing from the runners 31 and 41 to the cavity C side, and a gate 42 serving as an entrance for injecting the resin flowing from the runners 31, 41 into the cavity C are provided. The sprue 32 is provided so as to penetrate the upper mold 30 and communicates with the runner 41. A nozzle 23 of the resin supply device 22 is inserted into the upper end of the sprue 32. The gate 42 has a groove shape extending in the X direction in the lower mold 40, is provided so that the width in the Y direction is smaller and the depth in the Z direction is shallower than those of the runners 31 and 41.

The runners 31 and 41 are passages that connect the resin supply device 22 and the cavity C and allow the uncured resin to pass to the cavity C side via the sprue 32 and the gate 42. The runners 31 and 41 are provided with blocking portions (upper and lower passage portions 25 and 26 and bypass portions 27, which will be described later) that obstruct the flow of the uncured resin. Specifically, as shown in FIGS. 2 to 4, the runners 31 and 41 are the upper die 30 and the upper die passage portion 31 provided in a groove shape on the surface side facing the lower die 40 and the lower die. In the 40, the lower mold passage portion 41 provided in a groove shape on the surface side facing the upper mold 30, and the upper mold 30 and the lower mold 40 provided in the upper mold passage portion 31 and the lower mold passage portion 41 in the vertical direction. The upper and lower passage portions (inhibition portions) 25 and 26 connected to the above are provided. In FIG. 2, the vertical second passage portion 31D, which will be described later, is shown by a dotted line among the upper passage portions 31, and in FIG. 4, the upper passage portion 31, the lower passage portion 41, and the upper and lower passage portions 25 and 26 are shown by dotted lines. It is shown by. Further, FIG. 3 is a view of the lower mold 40 viewed from above (a plan view of the lower mold 40), the lower mold passage portion 41 is shown by a solid line, and when the mold is closed, the lower mold 40 is moved upward. The upper die passage portion 31 superimposed from is shown by a two-dot chain line. The lower passage portion 41 is provided at a position where it does not overlap with the upper passage portion 31 in a plan view.

The lower passage portion 41 extends in the X direction, and extends in the X direction with the vertical first passage portion 41C that connects the lower end (opening edge opened toward the lower mold 40 side) 32A of the sprue 32 and the upper and lower passage portions 25. It is present and includes a vertical third passage portion 41D that connects the upper and lower passage portions 26 and the gate 42. A vertical first passage portion 41C, a vertical passage portion 25, 26, and a vertical third passage portion 41D are lined up on a straight line connecting the lower end 32A of the sprue 32 and the gate 42. The vertical first passage portion 41C and the vertical passage portion 25, and the vertical third passage portion 41D and the vertical passage portion 26 are separated by a separation portion 43 provided in the lower mold 40.

The upper type passage portion 31 extends in the Y direction and connects to the upper and lower passage portions 25 with a horizontal first passage portion 31C and a vertical second passage portion 31D extending in the X direction and connecting to the horizontal first passage portion 31C. , A horizontal second passage portion 31E extending in the Y direction and connecting the vertical second passage portion 31D and the upper and lower passage portions 26 is provided. The horizontal first passage portion 31C is a passage that is bent at a right angle in a plan view with the upper and lower passage portions 25 as corners with respect to the vertical first passage portion 41C. The horizontal second passage portion 31E is a passage that is bent at a right angle in a plan view with the upper and lower passage portions 26 as corners with respect to the vertical third passage portion 41D. The vertical second passage portion 31D is a passage that is connected to the horizontal first passage portion 31C and the horizontal second passage portion 31E in a form orthogonal to each other.

Here, if the vertical first passage portion 41C and the vertical third passage portion 41D are stretched and connected in a direction approaching each other, the path is the distance through which the uncured resin flowing from the sprue 32 passes toward the gate 42. Is the shortest route. However, in the present embodiment, the vertical first passage portion 41C and the vertical third passage portion 41D are separated by the separation portion 43, and the upper type passage portion 31 is provided so as to bypass the separation portion 43. ing. Therefore, the upper type passage portion 31 is a detour portion 27 as a passage that circumvents the path in which the uncured resin flowing from the sprue 32 has the shortest distance toward the gate 42 in a U-shape in front view. ..

Subsequently, a method of manufacturing the base material 10 by the molding apparatus 20 will be described. The method for producing the base material 10 is roughly divided into a mold closing step of closing the upper mold 30 and the lower mold 40 in a form in which the laminated body P is housed in the cavity C, and a cavity C in which the laminated body P is housed. Includes a resin supply step of supplying the uncured resin from the resin supply device 22.

In the mold closing step, as shown in FIG. 5, the lower mold 40 of the molding apparatus 20 in the mold open state is composed of a core material 11 and a pair of reinforcing fiber materials 12A and 12B which are laminated on the front and back surfaces of the core material 11, respectively. The laminate P is set. The laminate P is placed on the molding surface 40A of the lower mold 40 in a state where the core material 11 smaller than the reinforcing fiber materials 12A and 12B is arranged inside the reinforcing fiber materials 12A and 12B. The peripheral edges of the reinforcing fiber materials 12A and 12B are overlapped with each other without the core material 11. The laminate P is set on the molding surface 40A of the lower mold 40 in a state of following the shape of the molding surface 40A (a state in which the peripheral edge portion is raised). The laminate P is previously molded (preformed) into a shape that follows the shape of the molding surface 40A. A binder (for example, a powdery adhesive) is previously applied to the reinforcing fiber materials 12A and 12B constituting the laminated body P, and the laminated body P is kept in a predetermined shape by the action of the binder. The laminated body P may be shaped by using the molded surface 40A, such as pressing the laminated body P against the molded surface 40A.

As shown in FIG. 6, after the laminated body P is set on the molding surface 40A of the lower mold 40, the upper mold 30 is brought close to the lower mold 40. Then, as shown in FIG. 7, the upper mold 30 is brought into contact with the lower mold 40 and the laminate P to bring the molding mold 21 into a mold closed state. When the molding die 21 is closed, the space surrounded by the molding surface 40A of the lower mold 40 and the molding surface 30A of the upper mold 30 becomes the cavity C. The laminated body P is housed in the cavity C of the molded mold 21 that is closed.

In the resin supply step, the cavity C is kept in an airtight state by closing the molding die 21. After that, the resin supply device 22 supplies the uncured resin R composed of the main agent and the curing agent to the sprue 32 via the nozzle 23. The uncured resin R supplied to the sprue 32 passes through the runners 31, 41 and the gate 42 and is supplied to the cavity C.

In the runners 31, 41, the inhibiting portions 25, 26, 27 inhibit the flow of the uncured resin R by changing the flow direction. Specifically, when the uncured resin R flowing in the vertical first passage portion 41C in the X direction reaches the upper and lower passage portions 25, the flow of the uncured resin R is changed from the X direction to the Z direction, and the upper mold is used. It rises to the 30 side. The flow of the uncured resin R that has risen in the upper and lower passage portions 25 is changed from the Z direction to the Y direction by heading toward the lateral first passage portion 31C (see FIGS. 3 and 4). The uncured resin R flowing through the horizontal first passage portion 31C bypasses the partition portion 43 counterclockwise in a plan view by passing through the vertical second passage portion 31D and the horizontal second passage portion 31E.

When the uncured resin R flowing in the horizontal second passage portion 31E in the Y direction reaches the upper and lower passage portions 26, the flow of the uncured resin R is changed from the Y direction to the Z direction and descends to the lower mold 40 side. .. The flow of the uncured resin R lowered in the upper and lower passage portions 26 is changed from the Z direction to the X direction by heading toward the vertical third passage portion 41D. Then, the uncured resin R passes through the gate 42 and flows into the cavity C.

As shown in FIG. 8, the uncured resin R supplied to the cavity C impregnates the inside of the reinforcing fiber material 12 or flows along the surface of the reinforcing fiber material 12 to form the cavity C. It is supplied to every corner. After the cavity C is filled with the uncured resin R, the pressure in the cavity C is maintained (held) at a constant value for a predetermined time. As a result, it is possible to prevent small bubbles existing in the uncured resin R from expanding and gathering to generate visible bubbles on the surface of the cured resin. Then, while the cavity C is held in pressure, the molding die 21 is heated to a predetermined temperature and the cavity C is heated to cure the uncured resin R. After the uncured resin R is cured, the upper mold 30 is raised to open the mold. Then, as shown in FIG. 9, the base material 10 is obtained by removing the molded product from the lower mold 40.

Subsequently, the effect of this embodiment will be described. In the present embodiment, the molding die 21 including the upper die 30 and the lower die 40 arranged at a position facing the upper die 30 and the cavity C surrounded by the upper die 30 and the lower die 40 in the mold closed state. In the molding device 20 including the resin supply device 22 for supplying the uncured resin, the molding mold 21 is the runners 31 and 41 provided in the upper mold 30 and the lower mold 40, and the cavity C and the resin supply device 22. The molding apparatus 20 is provided with runners 31 and 41 for passing the uncured resin through the uncured resin, and the runners 31 and 41 are provided with blocking portions 25, 26 and 27 that obstruct the flow of the uncured resin.

According to such a molding apparatus 20, when the uncured resin is supplied from the resin supply apparatus 22 and passed through the runners 31 and 41, the blocking portions 25, 26 and 27 obstruct the flow of the uncured resin. , The uncured resin can be agitated in the runners 31 and 41. Thereby, for example, when the uncured resin is composed of the main agent and the curing agent, these can be mixed by colliding with each other by the inhibitory portions 25, 26 and 27 of the runners 31 and 41.

Further, the runners 31 and 41 are provided on the upper mold passage portion 31 provided in the upper mold 30 and the lower mold passage portion 41 provided in the lower mold 40 at a position not overlapping with the upper mold passage portion 31 in a plan view. The upper and lower passage portions 25, 26 provided in the mold 30 and the lower mold 40 and connecting the upper mold passage portion 31 and the lower mold passage portion 41 are provided, and the upper and lower passage portions 25, 26 are obstructed portions 25, 26, 27. one of.

According to such a molding apparatus 20, the uncured resin supplied from the resin supply apparatus 22 passes through the upper and lower passage portions 25 and 26, so that the uncured resin is transferred from the upper mold passage portion 31 to the lower mold passage portion 31. It can flow to 41, or from the lower passage portion 41 to the upper passage portion 31. Then, the flow of the uncured resin is changed in the vertical direction, and the uncured resin flows through the upper mold passage portion 31 and the lower mold passage portion 41 provided at positions where they do not overlap each other in a plan view. The uncured resin is preferably stirred.

Further, the runner 31 includes a detour portion 27 that detours in the upper mold 30 in a curved manner from the path that the uncured resin passes through at the shortest distance, and the detour portion 27 is one of the obstructing portions 25, 26, 27. Is.

According to such a molding apparatus 20, the uncured resin supplied from the resin supply apparatus 22 passes through the detour portion 27 which is curved from the shortest path, so that the uncured resin flows inside the detour portion 27. The uncured resin can be agitated by, for example, a difference in flow velocity between the uncured resin flowing outside the bypass portion 27 and the uncured resin.

Further, in the present embodiment, the laminate P including the core material 11 and the pair of reinforcing fiber materials 12 to be laminated on the front and back surfaces of the core material 11 is impregnated with the uncured resin and then uncured. A method for producing a base material 10 in which the base material 10 obtained by curing a resin is manufactured by the molding apparatus 20 described above, wherein the upper mold 30 and the lower mold 40 are accommodated in a cavity C. In the resin supply step, the runners 31 and 41 include a mold closing step of closing the mold and a resin supply step of supplying the uncured resin from the resin supply device 22 to the cavity C in which the laminated body P is housed. It was shown that the uncured resin was passed through and the flow of the uncured resin was inhibited by the inhibiting portions 25, 26 and 27.

According to the method for producing the base material 10, the uncured resin is transferred to the runners 31 and 41 by inhibiting the flow of the uncured resin supplied from the resin supply device 22 by the blocking portions 25, 26 and 27. It can be agitated. As a result, the laminate P can be evenly impregnated with the uncured resin and cured, and the quality of the base material 10 can be improved.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. In the present embodiment, a molding apparatus and a method for manufacturing a base material having a structure of a lower mold passage portion different from that of the first embodiment are illustrated. In the present embodiment, the same reference numerals are used for the same parts as those in the above embodiment, and duplicate description of the structure, action, manufacturing process and effect will be omitted.

In the lower mold 240, the lower mold passage portion 241 extends in the X direction and includes a vertical third passage portion 241D that connects the upper and lower passage portions 26 and the gate 42. The vertical third passage portion 241D includes two convex portions (inhibiting portions) 244 protruding inward in the width direction (Y direction) at the central portion in the X direction. The vertical third passage portion 241D is provided with two convex portions 244, and thus has a constricted shape so that the width of the resin flow path is narrowed in the middle.

The uncured resin supplied from the resin supply device (see FIG. 7) descends in the upper and lower passages 26 and heads toward the vertical third passage 241D, so that the flow is changed from the Z direction to the X direction. .. In the vertical third passage portion 241D, the two convex portions 244 generate vortices, turbulent flows, and the like in the flow of the uncured resin, and the uncured resin is agitated. After that, the uncured resin flows through the gate 42 into the cavity C.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG. In this embodiment, a molding apparatus and a method for manufacturing a base material having a structure of a lower mold passage portion different from that of the above embodiment are illustrated. In the present embodiment, the same reference numerals are used for the same parts as those in the above embodiment, and duplicate description of the structure, action, manufacturing process and effect will be omitted.

In the lower mold 340, the lower mold passage portion 341 extends in the X direction and includes a vertical third passage portion 341D that connects the upper and lower passage portions 26 and the gate 42. The vertical third passage portion 341D includes a triangular columnar columnar portion (inhibiting portion) 344 erected in the Z direction as the height direction in the central portion in the X direction. The columnar portion 344 is arranged so that the corner portion 344F forming the corner is on the resin supply device side (see FIG. 7) and the side portion 344G forming the side facing the corner portion 344F is on the cavity C side. The vertical third passage portion 341D is provided with the columnar portion 344, so that the width of the resin flow path is gradually narrowed in the middle.

The uncured resin supplied from the resin supply device (see FIG. 7) descends in the upper and lower passages 26 and heads toward the vertical third passage 341D, so that the flow is changed from the Z direction to the X direction. .. In the vertical third passage portion 341D, the columnar portion 344 causes a vortex, a turbulent flow, or the like in the flow of the uncured resin, and the uncured resin is agitated. After that, the uncured resin flows through the gate 42 into the cavity C.

<Other embodiments>
The present invention is not limited to the embodiments described by the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not deviating from the gist other than the following. It can be implemented with various changes.

(1) In addition to the above embodiment, the configuration of the passage portion can be changed as appropriate. In the above embodiment, the passage portion is provided in both the upper mold and the lower mold, but the present invention is not limited to this. For example, the passage portion may be provided only on the upper mold, or may be provided only on the lower mold.

(2) In addition to the above embodiment, the detour portion can be changed as appropriate. In the above embodiment, the detour portion is provided on the upper mold, but the present invention is not limited to this. For example, the detour portion may be provided on the lower mold, or may be provided on both the upper mold and the lower mold. Further, the shape of the detour portion is not limited to the U-shape, but may be a curved shape, a zigzag shape, or the like.

(3) In addition to the above embodiment, the number of inhibitory portions can be changed as appropriate. That is, the number of upper and lower passages and detours is not particularly limited. For example, the obstruction portion may be composed of only two upper and lower passage portions or only one detour portion, or may be composed of four or more upper and lower passage portions or two or more detour portions. You may.

(4) The base material exemplified in the above embodiment is not limited to that provided for vehicle seats, and may be provided for interior materials (door trims, sideboards, ceiling materials, etc.) of various vehicles. Good. For example, the above base material can be applied to interior materials of vehicles such as trains and amusement vehicles as ground vehicles, airplanes and helicopters as flight vehicles, and ships and submersibles as marine and underwater vehicles.

10 ... Fiber reinforced resin molded product (base material), 11 ... Core material, 12 ... Reinforcing fiber material, 20 ... Molding device, 21 ... Molding mold, 22 ... Resin supply device, 25, 26 ... Vertical passage (inhibition part) , 27 ... detour part (inhibition part), 30 ... upper mold, 31, 41 ... runner (passage part), 40 ... lower mold, 43 ... separation part, C ... cavity, P ... laminated body

Claims (4)

A molding mold consisting of an upper mold and a lower mold arranged at a position facing the upper mold,
In a molding apparatus provided with a resin supply device for supplying uncured resin to a cavity surrounded by the upper mold and the lower mold in a mold closed state.
The molding die is a passage portion provided in at least one of the upper mold and the lower mold, and includes a passage portion that connects the cavity and the resin supply device and allows the uncured resin to pass through.
The molding apparatus, wherein the passage portion includes an obstructing portion that obstructs the flow of the uncured resin. The passage portion includes an upper mold passage portion provided on the upper mold, a lower mold passage portion provided on the lower mold and provided at a position not overlapping with the upper mold passage portion in a plan view, and the upper mold and the lower mold. The mold is provided with an upper and lower passage portion that connects the upper mold passage portion and the lower mold passage portion.
The molding apparatus according to claim 1, wherein the blocking portion is the upper and lower passage portions. The passage portion includes, in at least one of the upper mold and the lower mold, a detour portion that detours in a curved manner from the path in which the uncured resin passes the shortest distance.
The molding apparatus according to claim 1 or 2, wherein the obstructing portion is the detour portion. A base material formed by impregnating a laminate comprising a core material and a pair of reinforcing fiber materials laminated on the front and back surfaces of the core material with the uncured resin and then curing the uncured resin. Is a method for producing a base material, which is produced by the molding apparatus according to any one of claims 1 to 3.
A mold closing step of closing the upper mold and the lower mold with the laminated body accommodated in the cavity.
A resin supply step of supplying the uncured resin from the resin supply device to the cavity in which the laminate is housed is included.
A method for producing a base material, which comprises passing the uncured resin through the passage portion and obstructing the flow of the uncured resin by the obstructing portion in the resin supply step.

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