JP6514955B2 - METHOD FOR MANUFACTURING MOLDED ARTICLE AND MOLDED ARTICLE MANUFACTURING DEVICE - Google Patents

Description

  The present invention relates to, for example, a method and an apparatus for manufacturing a molded article in which a sheet-like insert member and a molding material are integrally molded.

  In order to reduce the weight of automobiles and the like, there is an effort to replace metal parts with molded articles into which thermoplastic prepregs are inserted. As a manufacturing method for obtaining such a molded product, as disclosed in Patent Document 1, a hybrid in which press molding and injection molding are simultaneously performed in a mold after the prepreg (insert member) is softened by heater heating or the like. A molding method called molding has been proposed.

  However, when the prepreg and the mold come into contact when inserting the heated prepreg into the mold, the temperature of the prepreg is rapidly reduced. The temperature of the prepreg in the hybrid molding greatly affects the bonding strength between the prepreg and the injected resin, and the appearance quality of the molded product (reformability of the prepreg).

JP, 2014-172279, A

  An object of the present invention is to provide a method of manufacturing a molded article in which a sheet-like insert member and a molding material are integrally formed, wherein the insert member and the molding material are minimized by minimizing the contact between the insert member and the mold. An object of the present invention is to provide a manufacturing method capable of forming a molded article having excellent bonding strength and appearance quality by integrally molding while maintaining the thermal equilibrium state.

In the method of manufacturing a molded article according to the present invention, the sheet-like insert member and the molding material are integrally molded , and the joint portion where the molding material is joined to the first surface of the insert member and the molding material are joined A method of manufacturing a molded article having a non-joining portion formed thereon, wherein the insert member is heated to a higher temperature than a cavity surface of a mold having a fixed mold serving as the lower mold and a movable mold serving as the upper mold . the portion formed as the non-joining portion of the insert member, by abutting the support member protruding from the crest of the cavity surface of the fixed mold, holding the insert member in a state of being separated from the cavity surface after closing the mold, the molding material is injected into the insert member, after said molding material is injected, by the die is moved in a direction of compressing the molding material, the solid Crests of the mold cavity surface extruding the molding material to form the non-bonded portion, the molding material extruded to form the joint fills the valleys of the cavity surface of the fixed die.

  According to the present invention, in the method of manufacturing a molded article in which the sheet-like insert member and the molding material are integrally molded, the molding and shaping are performed while maintaining the thermal equilibrium between the insert member and the injected molding material. By doing this, it is possible to obtain molded articles having excellent bonding strength and appearance quality.

(A) is a perspective view showing a part of an example of the molded article according to the first embodiment, and (B) is a part of the example molded article according to the second embodiment. The perspective view which shows, (C) is a perspective view which shows an example of the molded article which concerns on 3rd Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows typically the molded article manufacturing apparatus which concerns on 1st Embodiment. It is a figure explaining the procedure of 1st Embodiment, Comprising: The figure which shows a preheating process. It is a figure explaining the procedure of 1st Embodiment, Comprising: The figure which shows an insertion process. It is a figure explaining the procedure of 1st Embodiment, Comprising: The figure which shows a mold closing process. It is a figure explaining the procedure of 1st Embodiment, Comprising: The figure which shows an injection | emission process. It is a figure explaining the procedure of 1st Embodiment, Comprising: The figure which shows a compression process. It is a figure explaining the procedure of 1st Embodiment, Comprising: The figure which shows a cooling solidification process. The figure which shows typically the molded article manufacturing apparatus which concerns on 2nd Embodiment. It is a figure explaining the procedure of 2nd Embodiment, Comprising: The figure which shows an insertion process. It is a figure explaining the procedure of 2nd Embodiment, Comprising: The figure which shows a puncture process. It is a figure explaining the procedure of 2nd Embodiment, Comprising: The figure which shows a mold closing process. It is a figure explaining the procedure of 2nd Embodiment, Comprising: The figure which shows an injection | emission process. It is a figure explaining the procedure of 2nd Embodiment, Comprising: The figure which shows a compression process. It is a figure explaining the procedure of 2nd Embodiment, Comprising: The figure which shows a cooling solidification process. (A) to (D) schematically show the heat retention means according to the fourth embodiment, and (E) schematically shows the position control means according to the fifth embodiment. The figure which shows typically the structure of the injection device which concerns on 6th Embodiment. It is a figure which shows the supporting member concerning 7th Embodiment typically, Comprising: (A) is a figure which shows a protrusion position, (B) is a figure which shows an immersion position.

First Embodiment
The manufacturing method of the first embodiment will be described below with reference to FIGS. 1 (A) and 2 to 8.
FIG. 1A is a perspective view showing a part of an example of a molded article M according to this embodiment. FIG. 2 is a view schematically showing the configuration of a molded article manufacturing apparatus 1 used in the present embodiment. FIGS. 3-8 is a figure explaining the procedure (manufacturing method of this embodiment) which manufactures the molded article M using the molded article manufacturing apparatus 1. FIG.

  As shown in FIG. 2, the molded article manufacturing apparatus 1 includes a support member 10, a mold 20, a mold clamping device 30, and an injection device 40. The molded article manufacturing apparatus 1 may further include a heating device 51 such as an infrared heater shown in FIG. 3 and a transport device 52 such as an articulated robot. The clamping device 30 and the injection device 40 can be collectively referred to as a molding device 2.

  The molded article manufacturing apparatus 1 manufactures a molded article M by heating the prepreg S impregnated with the thermoplastic resin material and shaping it by the mold clamping unit 30 and injection molding the resin material R by the injection unit 40. The prepreg S is an insert member, and the resin material R is an example of a molding material.

  The prepreg S is formed in a sheet shape, and is formed in various shapes suitable for being formed into the molded article M. In the example shown in FIG. 1, the prepreg S before molding is formed in a circular shape. In the prepreg S, for example, a cloth or tow of carbon fiber or the like is impregnated with a thermoplastic resin (base resin) such as nylon 6. The resin material R is, for example, the same resin as the base resin impregnated in the prepreg S, but is not limited thereto as long as it is a resin compatible with the base resin. In the present specification, compatible means that when mixed at an arbitrary ratio, it can be apparently integrated with the base resin. The resin material R may include a filler such as a reinforcing fiber cut into a predetermined length. The prepreg S has a first surface Sa on which the resin material R is injection molded, and a second surface Sb opposite to the first surface. In a molded article M shown in FIG. 1A, a resin material R is molded so as to cover the entire first surface Sa of the prepreg S.

The mold 20 includes a fixed mold 21 and a movable mold 22. Inside the mold 20, a cavity (molding space) 20a to be transferred to the outer shape of the molded product M is formed.
As shown in FIG. 4, the fixed mold 21 has a cavity surface 21 a that constitutes a part of the outer shape of the cavity 20 a, a parting (division surface) 21 b, and a gate 21 d. The parting 21 b abuts on the movable die 22 in the die closing state. The gate 21 d communicates the surface facing the injection device 40 with the cavity surface 21 a.

  The movable mold 22 has a cavity surface 22a that constitutes a part of the outer shape of the cavity 20a, and a parting 22b. The parting 22b contacts the parting 21b of the fixed mold 21 in the mold closing state. The partings 21b and 22b of the fixed mold 21 and the movable mold 22 respectively have an inner cylindrical portion 21c and an outer cylindrical portion 22c. The inner cylindrical portion 21 c and the outer cylindrical portion 22 c extend from the edges of the cavity surfaces 21 a and 22 a of the fixed mold 21 and the movable mold 22 along the opening and closing direction (vertical direction) of the mold 20.

  As shown in FIG. 2, the mold clamping device 30 according to the present embodiment is a wedge-shaped array, and opens and closes the mold 20 up and down. In the example shown in FIG. 2, the fixed mold 21 is a lower mold, and the movable mold 22 is an upper mold.

  For example, the mold clamping device 30 moves up and down (advances and retracts) which moves the movable platen 32 and the movable platen 32 which supports the movable mold 22 and is movable with respect to the fixed platen 31. A mechanism 33 and a drive device 39 (shown in FIG. 4) such as an electric motor are provided. The elevating mechanism 33 is a hydraulic cylinder, a toggle, or the like, and raises and lowers the moving board 32 with respect to the fixed board 31. The drive device 39 will be described together with the support member 10.

  In the mold open state shown in FIG. 4, a plurality of (for example, four) support members 10 are arranged in the cavity 20 a of the mold 20 and respectively project from the cavity surface 21 a of the fixed mold (lower mold) 21. The support member 10 is formed, for example, in an elongated rod shape, and connects the distal end portion 10a that abuts the lower surface of the prepreg S, the proximal end portion 10b opposite to the distal end portion 10a, and the distal end portion 10a and the proximal end portion 10b. And a rod portion 10c. The supporting member 10 has a protruding position (shown in FIG. 4) at which the tip end portion 10a protrudes to a height at which the prepreg S does not contact the lower die 21 and an embedded position (shown in FIG. 8) where the leading end portion 10a is sunk into the cavity surface 21a. You can move between The projecting position of the support member 10 may be referred to as a first position, and the retracted position may be referred to as a second position. When the support member 10 is in the retracted position, the tip portion 10 a is flush with the cavity surface 21 a of the lower die 21. The base end portion 10 b is connected to the drive device 39 of the mold clamping device 30 through the fixed mold 21. The driving device 39 moves the support member 10 between the projecting position and the embedded position. Thereby, the height from the cavity surface 21a of the fixed mold 21 to the tip 10a can be freely adjusted.

  The injection device 40 injects the molten resin material R into the cavity 20 a of the mold 20. The injection device 40 includes, for example, a cylinder 41, a screw 42, and a hopper 43. The cylinder 41 includes a cylinder body 41a, an injection nozzle 41b provided at the end of the cylinder body 41a, and a heater 41c mounted on the outer periphery of the cylinder body 41a. The injection nozzle 41 b is connected to a gate 21 d opened in the mold 20. The heater 41 c heats the cylinder 41 and melts the resin material R in the cylinder 41.

  The screw 42 is housed inside the cylinder 41 and rotates and advances and retracts in the cylinder 41. A resin material R is stored in the hopper 43. The hopper 43 supplies the accommodated resin material R into the cylinder 41.

The procedure of manufacturing the molded article M using the molded article manufacturing apparatus 1 configured as described above will be described with reference to FIGS. 3 to 8.
First, as shown in FIG. 3, the heating device 51 heats the prepreg S to a temperature at which it can be shaped. The shapeable temperature is the melting temperature of the base resin impregnated in the prepreg S, which is higher than at least the cavity surfaces 21 a and 22 a of the mold 20. When the base resin is nylon 6, for example, it is 160.degree.

  Next, the prepreg S is transported by the transport device 52 into the mold 20 in the mold open state, and as shown in FIG. 4, the prepreg S is placed on the support member 10 at the projecting position. Thereby, the prepreg S is held by the support member 10 in a state of being separated from the mold 20.

  Next, the movable mold 22 is lowered toward the fixed mold 21 by the elevating mechanism 33 of the mold clamping device 30. At this time, the driving device 39 of the mold clamping device 30 lowers the support member 10 as the movable mold 22 descends.

  Eventually, as shown in FIG. 5, the outer cylindrical portion 22 c of the parting 22 b of the movable mold 22 is externally fitted to the inner cylindrical part 21 c of the parting 21 b of the fixed mold 21, and the mold 20 is closed. A sealed space 20b larger than the cavity 20a is defined by the cavity surface 21a of the fixed mold 21, the cavity surface 22a of the movable mold 22, and the outer cylindrical portion 22c.

  As shown in FIG. 6, the resin material R melted from the injection device 40 is injected into the closed space 20b. Then, as shown in FIG. 7, the movable mold 22 is further lowered by the mold clamping device 30. The support member 10 is also inserted so that the tip end portion 10a is flush with the cavity surface 21a.

  Then, the resin material R injected into the closed space 20b is compressed. The compressed resin material R stretches the prepreg S so as to press the prepreg S against the cavity surface 22 a while expelling the air remaining in the mold 20. While the prepreg S is shaped by the cavity surfaces 21 a and 22 a of the fixed mold 21 and the movable mold 22, the injected resin material R is molded integrally with the prepreg S.

  As shown in FIG. 8, when the parting 21 b of the fixed mold 21 and the parting 21 b of the movable mold 22 are compressed to the mold closed state where they abut completely, the movement of the movable mold 22 is restricted. The cavity surface 21a of the fixed mold 21 and the cavity surface 22a of the movable mold 22 define a cavity 20a having the same shape as the outer shape of the molded product M. The injected resin material R is cooled and solidified in the cavity 20a to obtain a molded article M shown in FIG. 1 (A).

  In the manufacturing method of the present embodiment performed as described above, the prepreg S does not come in contact with the cavity surfaces 21 a and 22 a of the mold 20 in the process shown in FIG. Therefore, in the process of shaping the prepreg S shown in FIGS. 5 to 8, the temperature of the prepreg S is not lowered. As a result, the shapeability of the prepreg S can be improved.

  Moreover, in the process of injecting the molten resin material R shown in FIG. 6, the temperature of the prepreg S is not lowered and the thermal equilibrium state with the resin material R is maintained. As a result, the bonding strength between the prepreg S and the resin material R in the molded article M can be improved.

  Next, a method of manufacturing a molded article according to the second to seventh embodiments will be described. In addition, the structure which has the same or similar function as the structure of the molded article manufacturing apparatus 1 which concerns on 1st Embodiment attaches | subjects the same code | symbol, and supposes that the description of corresponding 1st Embodiment is considered. I omit the explanation in. The configuration other than that described below is the same as that of the first embodiment.

Second Embodiment
A molded article manufacturing apparatus 1 according to the second embodiment will be described with reference to FIG. 1 (B) and FIGS. 9 to 15. The molded article manufacturing apparatus 1 according to the second embodiment is different from the first embodiment in that the mold clamping device 30 is in a horizontal arrangement.

  FIG. 1 (B) is a perspective view showing a part of an example of a molded article M according to the second embodiment. In the molded product M shown in FIG. 1B, a hole Sc is formed in the prepreg S, and a boss Mc is formed of a resin material R at the edge of the hole Sc. FIG. 9 is a view schematically showing the configuration of a molded article production apparatus 1 according to the second embodiment. 10 to 15 are diagrams for explaining the manufacturing method of the second embodiment.

  A mold clamping device 30 shown in FIG. 9 opens and closes the mold 20 in the lateral direction. When the advancing and retracting mechanism 33 of the mold clamping device 30 advances and retracts, the movable mold 22 of the mold 20 moves between the mold open state shown in FIG. 10 and the mold close state shown in FIG.

  In the second embodiment, as shown in FIG. 10, the support member 10 protrudes from the cavity surface 22 a of the movable die 22 instead of the fixed die 21. The tip 10 a of the support member 10 is formed in a conical or pyramidal shape. The fixed mold 21 has a recess 21 e capable of accommodating the support member 10 in the mold closed state. The recessed portion 21 e is formed such that the shallow portion (portion close to the cavity surface 21 a) is larger in diameter than the support member 10. The recess 21 e can also be referred to as a boss forming portion 21 e.

  The procedure of manufacturing the molded article M using the molded article manufacturing apparatus 1 configured as described above will be described with reference to FIGS. 10 to 15.

  As in the first embodiment, the heating device 51 heats the prepreg S to a shapeable temperature. Next, as shown in FIG. 10, the prepreg S is transported by the transport device 52 into the mold 20 in the mold open state. Then, as shown in FIG. 11, the distal end portion 10a of the support member 10 is punctured (inserted) in the hole Sc of the prepreg S. Thereby, the prepreg S is held at a position separated from the movable die 22.

  As in the first embodiment, when the movable die 22 is moved toward the fixed die 21, as shown in FIG. 12, the support member 10 is inserted into the recess 21 e of the fixed die 21, and The outer cylindrical portion 22 c of the parting 22 b is externally fitted to the inner cylindrical portion 21 c of the parting 21 b of the fixed mold 21. Thereby, the mold 20 is closed, and a sealed space 20b larger than the cavity 20a is partitioned.

  As shown in FIG. 13, the molten resin material R is injected from the injection device 40 into the sealed space 20b. The movable mold 22 is further moved, and as shown in FIG. 14, the resin material R injected into the closed space 20 b is compressed. The compressed resin material R is filled in the recess 21 e and shaped so as to stretch the prepreg S. Thus, the injected resin material R is integrally molded with the prepreg S.

  As shown in FIG. 15, when the parting 21b of the fixed mold 21 and the parting 21b of the movable mold 22 are compressed to the mold closed state where they abut completely, the movement of the movable mold 22 is restricted and the cavity 20a is partitioned. Ru. The injected resin material R is cooled and solidified in the cavity 20a to obtain a molded article M shown in FIG. 1 (B).

  As in the first embodiment, the support member 10 can be inserted into the cavity surface 22 a of the mold 20. When the support member 10 retracts from within the cavity 20a during molding, the holes Sc of the prepreg S are closed with the resin material R. Therefore, as in the first embodiment, it is possible to obtain a molded article M without a hole.

  In the manufacturing method of the second embodiment performed as described above, the prepreg S is not deprived of heat by contact with the mold 20 as in the first embodiment. Therefore, the shaping property of the prepreg S and the bonding strength between the prepreg S and the resin material R can be improved.

  Furthermore, in the second embodiment, the boss Mc to which the outer shape of the support member 10 is transferred can be integrally molded to the edge of the hole Sc formed in the prepreg S. Therefore, it is possible to surround and reinforce the boss Mc, which is often loaded, with the prepreg S.

Third Embodiment
The third embodiment will be described with reference to FIG. The third embodiment is different from the first embodiment in that the resin material R is formed on only a part of the first surface Sa of the prepreg S.
The molded article M shown in FIG. 1C has a bonded portion Ma in which the resin material R is molded in the prepreg S, and a non-bonded portion Mb in which the resin material R is not molded in the prepreg S. The cavity surface 21a of the fixed mold 21 includes a valley portion 21f (see FIG. 18A) transferred to the bonding portion Ma and a peak portion 21g (see FIG. 18A) transferred to the non-bonding portion Mb. have. The support member 10 is disposed on the ridge 21 g of the cavity surface 21 a.

  In the third embodiment, in the process of compressing the resin material R (see FIGS. 6 to 8), the support member 10 sinks into the ridges 21g, and the ridges 21g contact the prepreg S. The non-joined portion Mb can be formed by pushing the resin material R out of the mountain portion 21 g. By filling the extruded resin material R in the valley portion 21 f, the joint portion Ma can be formed. At this time, in the step of inserting the prepreg S into the mold 20 (see FIG. 4), the support member 10 supports a portion to be formed as the non-joined portion Mb. In other words, the support member 10 does not contact the portion formed as the joint portion Ma. Therefore, the prepreg S can be maintained at a high temperature in the portion formed in the joint portion Ma, and the joint strength between the prepreg S and the resin material R in the joint portion Ma can be improved.

Fourth Embodiment
The fourth embodiment will be described with reference to FIGS. 16 (A) to 16 (D). The fourth embodiment differs from the other embodiments in that the support member 10 is provided with a heat retention means.

  16 (A) is a view in which the tip end portion 10a is formed of a heat insulating material H such as thermosetting resin, FIG. 16 (B) is a view in which an electric heater H such as a cartridge heater is built in the tip end portion 10a, FIG. (C) is a view in which the heat medium H is circulated in the support member 10 by the heat medium circulation device 54, and FIG. 16 (D) is a discharge of the hot air H from the tip 10a of the support member 10 by the hot air supply device 55. FIG. According to the heat retention means shown in FIG. 16 (A) to FIG. 16 (D), the temperature drop of the prepreg S by the support member 10 can be suppressed.

Fifth Embodiment
The fifth embodiment will be described with reference to FIG. The fifth embodiment differs from the second embodiment in that the support member 10 is provided with position regulating means. FIG. 16E is a view showing a stopper 10d for restricting the prepreg S inserted into the support member 10 so that the prepreg S can not move to the proximal end 10b side. The stopper 10d shown in FIG. 16E is connected to the biasing member provided inside the rod portion 10c, and protrudes from the slit formed in the rod portion 10c by the biasing force. The contour of the stopper 10d is formed to have a tapering slope from the distal end 10a to the proximal end 10b. When the support member 10 is inserted into the cavity surface 22 a of the mold 20, the stopper 10 d is stored in the rod portion 10 c while storing energy. When the support member 10 is protruded from the cavity surface 22 a of the mold 20, the stopper 10 d is protruded from the rod portion 10 c by the biasing force.

  According to the position control means shown in FIG. 16E, the contact between the prepreg S and the mold 20 can be prevented more reliably. The position control means described in the fifth embodiment can be used in combination with the heat retaining means described in the fourth embodiment.

Sixth Embodiment
The sixth embodiment differs from the first embodiment in that the injection device 40 is an on-line blend type shown in FIG. The other configuration is the same as that of the first embodiment.

  The on-line blending type injection device 40 can cut the long continuous fiber F into a predetermined length and directly mix it with the resin material R.

  The injection device 40 shown in FIG. 17 further includes a second cylinder 44 connected to the cylinder 41, a second screw 45 housed inside the second cylinder 44, and a continuous fiber supply unit 46, and the hopper 43 Is attached to the second cylinder 44.

  The second cylinder 44 includes a cylinder body 44a, a communication port 44b provided at the tip of the cylinder body 44a and communicating with the cylinder 41, and a heater 44c mounted on the outer periphery of the cylinder body 44a. The continuous fiber supply unit 46 is attached to the downstream side of the hopper 43 in the supply direction of the material resin R, and supplies the continuous fiber F between the second cylinder 44 and the second screw 45. When the second screw 45 rotates, the continuous fiber F is cut into reinforcing fibers of a predetermined length and is directly mixed with the resin material R.

  According to the sixth embodiment, the reinforcing fibers can be dispersed in the resin material R, and the strength of the molded article M can be improved. Alternatively, the cost of materials can be reduced as compared to the case of purchasing pellets in which reinforcing fibers are previously contained as the resin material R. The on-line blending type injection device 40 can be applied not only to the first embodiment but also to other embodiments such as the second embodiment.

Seventh Embodiment
The seventh embodiment will be described with reference to FIGS. 18 (A) and 18 (B). The seventh embodiment is different from the first embodiment in that the position of the support member 10 is not controlled by the drive device 39 (shown in FIG. 9). FIG. 18A is a view showing the support member 10 in the projecting position, and FIG. 18B is a view showing the support member 10 in the retracted position.

  In the fixed mold 21 shown in FIG. 18A, a storage portion 21 h capable of storing the support member 10 is formed. A biasing member is provided inside the storage portion 21 h. The support member 10 is inserted into the storage portion 21 h and connected to the biasing member.

  In the mold open state, the support member 10 protrudes from the cavity surface 21 a by the biasing force of the biasing member. The support member 10 is disposed at a position overlapping the shaping portion 22h shown in FIG. 18B, and can mount the prepreg S. When the movable die 22 is lowered, the support member 10 is stored and pushed down to the retracted position shown in FIG. 18 (B). In the seventh embodiment, the support member 10 can be moved between the projecting position and the retracted position by a simple configuration in which the drive device 39 is omitted.

[Various modifications]
Although several embodiments have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof. For example, in each embodiment, the resin material is injected into a mold with a slightly opened parting, the resin material is injected into a completely closed mold, and the slide core is not injected and the mold is completely closed for injection compression molding. (Nest) may be projected into the cavity for injection compression molding. Alternatively, the resin material may be molded only by holding pressure without compression using a mold. Further, in the first embodiment, a mold clamping device may be used in which a fixed mold is arranged on the upper side and a movable mold is arranged on the lower side. In that case, the support member may be disposed in a movable mold (lower mold).

  In the first embodiment, a plurality of vacuum suction pipes may be protruded from the cavity surface of the upper mold (moving mold) as a support member, and the prepreg may be held by adsorbing to the hanging lower end of the support member. In the second embodiment, the prepreg may be held by being adsorbed to a support member consisting of a vacuum suction tube. In that case, the support member need not be punctured in the prepreg. In the third embodiment, a resin material may be formed on the upper and lower surfaces of the prepreg by swelling around the holes of the prepreg, and the resin material may be axially supported in the holes. In short, in the state where the heated prepreg is inserted into the mold and molded therefrom, the support member only needs to be capable of holding the prepreg from contacting the mold.

  DESCRIPTION OF SYMBOLS 1 ... Molded article manufacturing apparatus, 10 ... Support member, 20 ... Mold, 21a, 22a ... Cavity surface, 21h ... Storage part, 22h ... Shaped part, 30 ... Clamping apparatus, 40 ... Injection apparatus, 51 ... Heating apparatus , 52: conveying device, M: molded article, Ma: joint portion, Mb: non joint portion, R: resin material (molding material), S: prepreg (insert member).

Claims (3)

A sheet-shaped insert member and a molding material are integrally molded to form a joint portion where the molding material is joined to the first surface of the insert member and a non-joining portion where the molding material is not joined Product manufacturing method,
Heating the insert member to a temperature higher than a cavity surface of a mold having a fixed mold as a lower mold and a movable mold as an upper mold ;
The portion formed as the non-joining portion of the insert member, by abutting the support member protruding from the crest of the cavity surface of the fixed mold, holding the insert member in a state of being separated from the cavity surface ,
After closing the mold, the molding material is injected into the insert member,
After the molding material is injected, the mold is moved in the direction to compress the molding material , whereby the ridges of the cavity surface of the fixed mold extrude the molding material to form the non-joined portion. The method of manufacturing a molded article, wherein the extruded molding material is filled in the valley portion of the cavity surface of the fixed mold to form the joint portion . The method for manufacturing a molded article according to claim 1 , wherein after the mold is closed, the support member is sunk into a crest portion of a cavity surface of the fixed mold . A sheet-shaped insert member and a molding material are integrally molded to form a joint portion where the molding material is joined to the first surface of the insert member and a non-joining portion where the molding material is not joined A molded article manufacturing apparatus for manufacturing articles;
A mold having a fixed mold which is a lower mold and a movable mold which is an upper mold ,
A heating device for heating the insert member to a temperature higher than a cavity surface of the mold;
A mold clamping device for moving the mold up and down to a mold open state and a mold closed state;
An injection device for injecting the molding material into the mold;
The fixed mold cavity surface is provided with a peak portion for extruding the injected molding material, a peak portion for forming the non-joining portion, and a valley portion for filling the extruded molding material to form the joint portion. ,
The fixed type is in a protruding state in which the fixed type projects from the ridge to be in contact with the portion formed as the non-joining section of the insert member and holds the insert member in a state of being separated from the cavity surface ; What is claimed is: 1. A molded article manufacturing apparatus comprising: a support member capable of moving a recessed state into a peak portion of a cavity surface .

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