JP2020163642A - Manufacturing method of panel-shaped resin parts - Google Patents

Abstract

To enable panel-shaped resin parts to be manufactured that are highly safe when handled by occupants and have a good material yield.SOLUTION: A package tray 1 is obtained by deforming a sharp portion 1e by advancing to bring a block die 61a, having been heated to a predetermined softening temperature T2 for softening a base material 1a, from a tip side into contact with the sharp portion 1e within a cut portion of a press-formed body P1, after fixing the press-formed body P1 to a fixing jig 5 in a state where the block die 61a is retracted with respect to the fixing jig 5.SELECTED DRAWING: Figure 11

Description

The present invention relates to, for example, a method for manufacturing a resin interior part or exterior part to be mounted on a vehicle such as an automobile.

Conventionally, a package tray that separates a rear seat and a loading platform is arranged behind the inside of a vehicle such as an automobile, and the package tray has a layer of a base material made of resin in order to maintain a certain rigidity. are doing. The package tray is generally removable from the vehicle, and the occupant grips the outer peripheral portion of the package tray to perform the attachment / detachment work. Therefore, if there is a sharp portion on the outer peripheral portion of the package tray, the occupant may cut his / her hand during the attachment / detachment work, so it is necessary to have a structure that can avoid the cut during manufacturing.

For example, for the package tray of Patent Document 1, a sheet material composed of a base material formed of resin and a skin material laminated on one side of the base material is prepared, and the temperature of the sheet material is raised. After setting the mold in the mold open state, the mold is closed to mold the panel-shaped molded product, and then the trim mold is advanced toward the outer peripheral portion of the panel-shaped molded product protruding from the mold to form the panel-shaped molded product. While cutting the outer peripheral portion of the body, the package tray is obtained by folding back inside the panel-shaped molded body so that the skin material side is on the outside.

Japanese Patent No. 5049410

By the way, the package tray as in Patent Document 1 has a problem that the material yield is deteriorated by the amount of the region of the outer peripheral portion to be bent.

Further, the package tray of Patent Document 1 has a shape in which the outer peripheral edge portion is not sharp due to the bending of the outer peripheral portion, but the sharp portion of the cut portion generated during the cutting process still faces the inside of the package tray. When the user grips the outer peripheral portion of the package tray in the remaining state, for example, a fingertip or the like may unexpectedly come into contact with the product to make a cut. These things can be said not only for the package tray as described above, but also for other panel-shaped resin parts for vehicles obtained by the same manufacturing method.

The present invention has been made in view of these points, and an object of the present invention is to enable the manufacture of panel-shaped resin parts having high safety during handling by occupants and having a good material yield. It is in.

In order to achieve the above object, the present invention pushes a sharp portion generated in a cut processed portion in the outer peripheral edge portion of a panel-shaped molded body before becoming a panel-shaped resin part from the tip end side to the opposite side in the protruding direction. It is characterized by being deformed with.

Specifically, the following solutions have been taken in the method for manufacturing panel-shaped resin parts.

That is, in the first invention, a fixing jig for fixing a panel-shaped molded body having at least one resin layer whose outer peripheral edge portion is cut in the plate thickness direction and a block capable of advancing and retreating toward the fixing jig. Each mold is prepared, and after the panel-shaped molded body is fixed to the fixing jig in a state where the block mold is retracted from the fixing jig, the temperature is raised to a predetermined softening temperature for softening the resin layer. The block mold is advanced and brought into contact with the sharp portion of the cut portion of the panel-shaped molded product from the tip end side, whereby the sharp portion is deformed to obtain a panel-shaped resin part.

In the second invention, in the first invention, the fixing jig is configured to fix the panel-shaped molded body in a posture in which the sharp portion faces upward, and the block type is lateral to the fixing jig. It is arranged and is configured to advance and retreat with respect to the fixing jig by moving in the horizontal direction, and gradually lowers to the contact portion with the panel-shaped molded body in the block mold as it goes in the retracting direction of the block mold. It is characterized in that a contact surface is formed which is curved or inclined so as to be located at.

In the third invention, in the first invention, the fixing jig is configured to fix the panel-shaped molded body in a posture in which the sharp portion faces upward, and the block type is a lateral upper portion of the fixing jig. It is configured to move back and forth with respect to the fixing jig by moving in an oblique direction, and the contact portion of the block mold with the panel-shaped molded body is curved so as to open in the forward direction of the block mold. It is characterized in that a recess is formed.

In the fourth invention, in any one of the first to third inventions, the fixing jig includes first and second annular clamp portions having a shape corresponding to the outer peripheral edge portion of the panel-shaped molded body. In the first and second annular clamp portions, the outer peripheral edge portion of the first annular clamp portion is located outside the outer peripheral edge portion on the side opposite to the protruding direction of the sharp portion in the panel-shaped molded body. Further, the panel-shaped resin component is sandwiched and fixed so that the outer peripheral edge portion of the second annular clamp portion is located inside the outer peripheral edge portion on the protruding side of the sharp portion in the panel-shaped molded body. To do.

In the fifth invention, in any one of the first to fourth inventions, the panel-shaped molded body has a shape symmetrical in the horizontal direction, and the block type is fixed to the fixing jig. At least a pair are provided symmetrically in the horizontal direction with the axis of symmetry of the panel-shaped molded body as a boundary, and the paired block molds are synchronized and advanced with respect to the fixing jig at the same time.

In the first invention, since the panel-shaped resin component can be obtained without bending the outer peripheral portion of the panel-shaped molded product, the material yield can be improved. Further, since the sharp portion generated in the cut portion of the panel-shaped molded product during manufacturing is deformed so that the angle of the cross section of the tip thereof gradually widens, it is assumed that the human body comes into contact with the outer peripheral portion of the panel-shaped resin part. It becomes difficult to cut, and it is possible to make a panel-shaped resin part with high safety.

In the second invention, when the block mold is moved, the sharp portion is gradually deformed by the heat of the block mold while sliding in contact with the curved surface, and finally the cross section forms a curved shape along the contact surface of the block mold. Become. Therefore, even if the human body comes into contact with the outer peripheral portion of the panel-shaped resin component, the cut will not be surely made, and the panel-shaped resin product with higher safety can be obtained. Further, even if the sharp portion of the panel-shaped molded body fixed to the fixing jig faces directly above or diagonally upward, the sharp portion can be deformed while moving the block mold in the horizontal direction. Therefore, for example, a block. It is not necessary to make the support structure of the mold complicated by moving it in the vertical direction or the diagonal direction in which the load is applied to the device, and the structure of the device can be made simple, hard to break, and low cost.

In the third invention, since the block type moves in a direction substantially opposite to the protruding direction of the sharp portion, the sharp portion is gradually pushed from the tip end side to the curved recess and deformed. Then, the tip side of the sharp part becomes a beautiful curved shape following the curved concave part, and even if the human body comes into contact with the outer peripheral part of the panel-shaped resin part, not only can it be surely not cut, but it also looks good. It can be a good panel-shaped resin part.

In the fourth invention, when the end portion of the panel-shaped molded body is treated, the vicinity of the outer peripheral edge portion of the panel-shaped molded body is sandwiched by the first and second annular clamp portions over the entire circumference. When the block mold comes into contact with the sharpened portion of the cut portion of the panel-shaped molded body, it is possible to prevent the portion of the outer peripheral portion of the panel-shaped molded product other than the sharpened portion from being significantly deformed, and only the sharpened portion. Can be reliably deformed.

In the fifth invention, when the sharp portion of the panel-shaped molded body is deformed, the pair of block molds push the panel-shaped molded body in opposite directions, so that the panel-shaped molded body is displaced with respect to the fixing jig. It is possible to prevent it from being squeezed, and it is possible to reliably deform only the sharp part.

It is a schematic side view of the production line to which the manufacturing method which concerns on Embodiment 1 of this invention is applied. It is a block diagram of the production line to which the manufacturing method which concerns on Embodiment 1 of this invention is applied. It is a schematic cross-sectional view which shows the state just before molding a press-molded article by the molding die of a molding cutting step. After FIG. 3, it is a figure which shows the state immediately after the molding die was closed and the press molded body was obtained by press molding. After FIG. 4, it is a figure which shows the state which opened the molding die. It is a top view of the end processing process. 6 is a cross-sectional view taken along the line VII-VII of FIG. FIG. 7 is an enlarged view of part VIII of FIG. After FIG. 7, it is a figure which shows the state immediately after performing the edge treatment of the outer peripheral edge part in a press-molded body. It is the X part enlarged view of FIG. FIG. 8 is a diagram corresponding to FIG. 8 in the second embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example.

<< Embodiment 1 of the invention >>
FIG. 1 shows a production line 10 according to the first embodiment of the present invention. The production line 10 is designed to manufacture a package tray 1 (panel-shaped resin part) for a vehicle, and as shown in FIG. 2, the sheet-shaped base material 1a is sequentially formed from the upstream side of the production line 10. From the sheet material 1d obtained by laminating the skin material 1b on one side of the heating step 10a to be heated and the base material 1a heated in the heating step 10a and laminating the back surface material 1c on the other side of the base material 1a. The forming and cutting step 10b for obtaining the press-formed body P1 and the end processing step 10c for obtaining the package tray 1 by performing the end processing of the outer peripheral edge portion of the press-formed body P1 obtained in the forming and cutting step 10b are linear. It is arranged.

The package tray 1 is a vehicle component that separates the rear seats and the loading platform behind the inside of the vehicle, and has a flat hat shape that is symmetrical in the vehicle width direction.

The base material 1a constitutes a resin layer in the central portion of the package tray 1 and is made of glass fiber reinforced polypropylene. On the other hand, the skin material 1b and the back material 1c are each made of polypropylene fibers.

In the heating step 10a, as shown in FIG. 1, a heating furnace 2 capable of heating an object by far infrared rays is arranged.

Inside the the heating furnace 2, it can be placed wire mesh 2a the sheet substrate 1a is disposed, allowed to warm to substrate 1a placed on the gold network 2a to a predetermined softening temperature T ₁ of It is designed to soften.

In the molding and cutting step 10b, as shown in FIGS. 3 to 5, a molding die 3 having an upper die 31 and a lower die 32 is arranged, and the upper die 31 can be raised and lowered with respect to the lower die 32.

The upper mold 31 is formed with an upper pressure surface 31a having a substantially concave cross section, while the lower mold 32 is formed with a lower pressure surface 32a having a substantially convex cross section corresponding to the upper pressure surface 31a.

A cutting blade 31b projecting downward is provided at a position near the outer peripheral edge of the upper pressurizing surface 31a.

Then, as shown in FIGS. 3 and 4, to set a sheet-shaped rear material 1c on the lower pressing surface 32a of the lower mold 32 and then heated from the heating furnace 2 to the softening temperature T ₁ of the retrieved The skin material 1b is placed on the upper side of the sheet-shaped base material 1a in the state, the base material 1a and the skin material 1b are overlapped, and the overlapped base material 1a and the skin material 1b are placed on the back surface material 1c. After obtaining the sheet material 1d, the upper die 31 is lowered to the bottom dead center to deform the sheet material 1d along the upper pressure surface 31a and the lower pressure surface 32a, and the outer circumference of the sheet material 1d. A press-molded body P1 is obtained by cutting a portion with a cutting blade 31b.

As shown in FIG. 8, a sharp portion 1e that protrudes toward the back surface side of the press-formed body P1 is formed in the cut portion of the outer peripheral edge of the press-formed body P1 during the cutting operation by the cutting blade 31b. Will be done.

In the end processing step 10c, as shown in FIG. 6, an end processing device 9 for end processing the outer peripheral edge portion of the press-formed body P1 is arranged.

The end processing device 9 includes a fixing jig 5 for fixing the press-molded body P1 and six pressing units 6 capable of horizontally pressing the outer peripheral edge of the press-molded body P1 fixed to the fixing jig 5. And have. In the following, the pressing units 6 that press the front side edge portion and the rear side edge portion of the press molded body P1 fixed to the fixing jig 5 are referred to as pressing units 6A and 6B, respectively, and are fixed to the fixing jig 5. A pair of pressing units 6 that press each side edge portion of the press molded body P1 are called a pressing unit 6C, and a pair of pressings that press each front side corner portion of the press molded body P1 fixed to the fixing jig 5. The unit 6 will be referred to as a pressing unit 6D. Further, the double pressing unit 6C is arranged symmetrically in the horizontal direction with the axis of symmetry of the press molded body P1 attached to the fixing jig 5 as a boundary, and the double pressing unit 6D is also press molded attached to the fixing jig 5. They are arranged symmetrically in the horizontal direction with the axis of symmetry of the body P1 as a boundary.

As shown in FIG. 7, the fixing jig 5 has a support frame 51 that supports the press-formed body P1 in a posture in which the back surface side (sharp portion 1e) faces upward, and the fixing jig 5 that is vertically movable and is arranged above the support frame 51. It is provided with a pressing pad 52.

A first annular clamp portion 51a having a shape corresponding to the outer peripheral edge portion of the press molded body P1 is provided on the outer peripheral portion of the support frame 51, and the outer shape of the first annular clamp portion 51a is the outer shape of the press molded body P1. It has a slightly larger shape than.

On the other hand, a second annular clamp portion 52a having a shape corresponding to the outer peripheral edge portion of the press molded body P1 is provided on the outer peripheral portion of the pressing pad 52, and the outer shape of the second annular clamp portion 52a is the press molded body P1. It has a shape slightly smaller than the outer shape of.

Then, when the pressing pad 52 is moved downward while the support frame 51 supports the press-formed body P1, the outer peripheral edge portion of the first annular clamp portion 51a becomes the first annular clamp portion 51a and the second annular clamp portion 52a. The outer peripheral edge of the second annular clamp portion 52a protrudes from the sharpened portion 1e of the press-formed body P1 so as to be located outside the outer peripheral edge of the press-formed body P1 opposite to the protruding direction of the sharpened portion 1e. The press-molded body P1 is clamped and fixed so as to be located inside the outer peripheral edge portion on the side.

The pressing unit 6A is arranged on the front side of the fixing jig 5, and has a slide body 61 extending linearly along the front side edge of the press-formed body P1 fixed to the fixing jig 5 and fixing the slide body 61. A press-formed body P1 having a fluid pressure cylinder 62 arranged on the opposite side of the jig 5 and having a slide body 61 fixed to the fixing jig 5 by expanding and contracting the cylinder rod 62a of the fluid pressure cylinder 62. It moves forward and backward horizontally with respect to the front edge.

A copper block type 61a extending linearly along the front side edge of the press-formed body P1 fixed to the fixing jig 5 is provided on the upper half of the slide body 61, and the upper surface of the block type 61a is provided with a block type 61a. , A heating plate heater 61b is attached.

As shown in FIGS. 7 to 8, a pressing portion 61c having a substantially L-shaped cross section is formed on the fixing jig 5 side of the block type 61a.

The pressing portion 61c is formed with a curved surface 61d (contact surface) that is gradually curved so as to be positioned downward as the block mold 61a moves backward, and the block is blocked with the press-formed body P1 fixed to the fixing jig 5. When the mold 61a is advanced, the curved surface 61d comes into contact with the front side edge portion of the press-molded body P1.

The pressing units 6B to 6D press the press molded body P1 fixed to the fixing jig 5 except that the pressing location, the shape of the slide body 61 in a plan view, and the arrangement of the fluid pressure cylinder 62 with respect to the slide body 61 are different. Since it has the same configuration as the unit 6A and has the same function, the same reference numerals as those of the pressing unit 6A are given, and detailed description thereof will be omitted.

A temperature controller 7 capable of adjusting the temperature of each heater 61b is connected to the heating plate heater 61b of each block type 61a in the pressing units 6A to 6D.

Further, each fluid pressure cylinder 62 and temperature controller 7 of the pressing units 6A to 6D are connected to a control panel 8 that outputs an operation signal to each of the fluid pressure cylinders 62 and the temperature controller 7.

The control panel 8 outputs an operation signal to the temperature controller 7 to heat each heater 61b in a state where the press-molded body P1 is fixed to the fixing jig 5, and softens each block type 61a to the base material 1a. to temperature T ₂ and is adapted to warm.

Further, the control panel 8, press molding a curved surface 61d pressing unit 6A, each block type 61a which was allowed to warm it outputs an operation signal to the 6B to the softening temperature T ₂ is advanced by the sliding motion of the slide body 61 The sharp portion 1e is deformed by contacting the sharp portion 1e of the front side edge portion and the rear side edge portion of the body P1 from the tip side thereof. The control panel 8 outputs an operation signal to the pressing units 6A and 6B so that the sliding operations of the sliding bodies 61 of the pressing units 6A and 6B move synchronously and simultaneously.

Further, the control panel 8, press molding a curved surface 61d of each block type 61a which was allowed to warm it outputs an operation signal to the pair of pressing units 6C to the softening temperature T ₂ is advanced by the sliding motion of the slide body 61 The sharp portion 1e is deformed by contacting the sharp portion 1e of each side edge portion of the body P1 from the tip side thereof. The control panel 8 outputs an operation signal to each pressing unit 6C so that the sliding operations of the sliding bodies 61 of the pair of pressing units 6C move synchronously and simultaneously.

Further, the control panel 8, press molding a curved surface 61d of each block type 61a which was allowed to warm it outputs an operation signal to the pair of pressing units 6D to the softening temperature T ₂ is advanced by the sliding motion of the slide body 61 The sharp portion 1e is deformed by contacting the sharp portion 1e of each front corner portion of the body P1 from the tip side thereof. The control panel 8 outputs an operation signal to each pressing unit 6D so that the sliding operations of the sliding bodies 61 of the pair of pressing units 6D move synchronously and simultaneously.

Next, the production of the package tray 1 by the production method according to the embodiment of the present invention will be described in detail.

As shown in FIG. 1, first, the sheet-shaped base material 1a is carried into the heating furnace 2 and placed on the wire mesh 2a, and then the base material 1a is heated to raise the temperature to the softening temperature T.

Next, as shown in FIG. 3, the sheet-shaped back surface material 1c is placed on the lower mold 32 of the molding die 3, and the skin material 1b is placed on the upper surface of the base material 1a taken out from the heating furnace 2.

Next, the superposed base material 1a and the skin material 1b are superposed on the sheet-shaped back surface material 1c from above to form the sheet material 1d, and then the molding die 3 is closed as shown in FIG. Then, the sheet material 1d is deformed along the upper pressurizing surface 31a of the upper die 31 and the lower pressurizing surface 32a of the lower die 32, and the excess region of the outer peripheral portion thereof is cut off by the cutting blade 31b. Then, as shown in FIG. 5, when the molding die 3 is opened, the press-molded body P1 is obtained.

A sharp portion 1e protruding toward the back surface side of the press-molded body P1 is formed in the cut portion of the outer peripheral edge portion of the press-molded body P1 (see FIG. 8).

After that, the press-formed body P1 is conveyed to the fixing jig 5. Then, as shown in FIG. 6, the back surface side of the press-formed body P1 conveyed to the fixing jig 5 is upward in a state where the block molds 61a of the pressing units 6A to 6D are retracted with respect to the fixing jig 5. It is thrown into the support frame 51 so as to face and is supported by the support frame 51.

Next, the press pad 52 presses the press molded body P1 from above. Then, as shown in FIGS. 7 and 8, in the first annular clamp portion 51a and the second annular clamp portion 52a, the outer peripheral edge portion of the first annular clamp portion 51a is in the protruding direction of the sharp portion 1e in the press molded body P1. Is located outside the outer peripheral edge portion on the opposite side, and the outer peripheral edge portion of the second annular clamp portion 52a is located inside the outer peripheral edge portion on the protruding side of the sharpened portion 1e in the press molded body P1. The press molded body P1 is clamped and fixed.

Then allowed to warm each block type 61a by heating the heating plate heater 61b by a temperature controller 7 to the softening temperature T ₂ which substrate 1a is softened.

After that, the control panel 8 first outputs an operation signal to the pressing units 6A and 6B to synchronize both block types 61a and advance them at the same time. Then, as shown in FIGS. 9 and 10, each sharpened portion 1e at the front side edge portion and the rear side edge portion of the press molded body P1 fixed to the fixing jig 5 is in sliding contact with the curved surface 61d of each block type 61a. However, it is gradually deformed by the heat of each block mold 61a, and finally, each cross section of the front side edge portion and the rear side edge portion of the press molded body P1 forms a curved shape along the curved surface 61d of the block mold 61a. Therefore, even if the human body comes into contact with the outer peripheral portion of the package tray 1, the cut is surely prevented and the package tray 1 can be made highly safe.

Further, even if the sharp portion 1e of the press-formed body P1 fixed to the fixing jig 5 faces directly above or diagonally upward, the sharp portion 1e can be deformed while moving the block mold 61a in the horizontal direction. For example, it is no longer necessary to make the support structure of the block type 61a complicated to move in the vertical direction or the diagonal direction in which the load is applied to the device, and the structure of the end processing device 9 is made simple, hard to break, and low cost. can do.

Further, when the end portion of the press-formed body P1 is processed, the vicinity of the outer peripheral edge portion of the press-formed body P1 is sandwiched between the first annular clamp portion 51a and the second annular clamp portion 52a over the entire circumference. When the block mold 61a comes into contact with the sharpened portion 1e of the cut portion of the press molded body P1, it is possible to prevent the portion of the outer peripheral portion of the press molded body P1 excluding the sharpened portion 1e from being significantly deformed. , Only the sharp portion 1e can be reliably deformed.

In addition to that, when the sharp portion 1e of the press molded body P1 is deformed, the pair of block molds 61a pushes the press molded body P1 in opposite directions, so that the press molded body P1 pushes against the fixing jig 5. It is possible to prevent it from shifting, and it is possible to reliably deform only the sharp portion 1e.

Next, the control panel 8 outputs an operation signal to the pressing units 6A and 6B to synchronize each block type 61a and retracts them at the same time, and then outputs an operation signal to both pressing units 6C to display each block type 61a. Synchronize and move forward at the same time. Then, each sharp portion 1e at each side edge portion of the press molded body P1 fixed to the fixing jig 5 is gradually deformed by the heat of each block mold 61a while being in sliding contact with the curved surface 61d of each block mold 61a, and finally. Therefore, each side edge portion of the press-formed body P1 forms a curved shape along the curved surface 61d of the block type 61a.

Further, the control panel 8 outputs an operation signal to both pressing units 6C to synchronize each block type 61a and retracts them at the same time, and then outputs an operation signal to both pressing units 6D to synchronize each block type 61a. And move forward at the same time. Then, each sharp portion 1e at each front side corner portion of the press molded body P1 fixed to the fixing jig 5 is gradually deformed by the heat of each block mold 61a while being in sliding contact with the curved surface 61d of each block mold 61a, and finally. Each front corner of the press-molded body P1 has a curved shape along the curved surface 61d of the block mold 61a.

Then, the control panel 8 outputs an operation signal to both pressing units 6D to retract each block type 61a. Then, after raising the pressing pad 52, the completed package tray 1 is taken out from the fixing jig 5, and the production of the package tray 1 is completed.

From the above, according to the first embodiment of the present invention, the package tray 1 can be obtained without bending the outer peripheral portion of the press-molded body P1, so that the material yield can be improved. Further, since the sharp portion 1e generated in the cut portion of the press-formed body P1 in the process of being manufactured is deformed so that the angle of the cross section of the tip thereof gradually becomes wider, it is assumed that the human body comes into contact with the outer peripheral portion of the package tray 1. It becomes difficult to cut, and the package tray 1 can be made highly safe.

In the first embodiment of the present invention, each block type 61a of each pressing unit 6A to 6D is moved forward and backward in synchronization with each other, but each block type of all pressing units 6A to 6D. 61a may be synchronized so as to advance and retreat at the same time, or each may be advanced and retreated one by one.

Further, in the embodiment of the present invention, the curved surface 61d is formed on the pressing portion 61c in contact with the outer peripheral edge portion of the press molded body P1 of each block type 61a, but it does not have to be curved and is linear. It may be an inclined surface.

<< 2nd Embodiment of the Invention >>
FIG. 11 shows an end processing device 9 that processes an end portion of the press-formed body P1 according to the second embodiment of the present invention. In the second embodiment, only a part of the structure of the end processing device 9 is different from that of the first embodiment, and the other parts are the same as those of the first embodiment. explain.

The block type 61a in the end processing device 9 of the second embodiment is arranged on the lateral upper part of the fixing jig 5, and the slide body 61 becomes the fixing jig 5 by expanding and contracting the cylinder rod 62a of the fluid pressure cylinder 62. It advances and retreats diagonally with respect to the front side edge portion of the fixed press-molded body P1.

The pressing portion 61c of the block mold 61a of the second embodiment is formed with a curved recess 61e that opens in the forward direction of the block mold 61a.

When the block mold 61a is advanced with the press-molded body P1 fixed to the fixing jig 5, the block mold 61a moves in a direction substantially opposite to the protruding direction of the sharp portion 1e in the press-molded body P1, so that the sharp portion 1e moves. It is gradually pushed from the tip end side to the curved recess 61e and deformed. Therefore, the tip side of the sharp portion 1e has a beautiful curved shape following the curved concave portion 61e, and even if the human body comes into contact with the outer peripheral portion of the package tray 1, not only can it be ensured that the cut is not made, but also the appearance is good. Can be a good package tray 1.

The package tray 1 manufactured by the manufacturing methods of the first and second embodiments of the present invention is composed of the base material 1a, the skin material 1b and the back surface material 1c, but is composed of only the base material 1a and the skin material 1b. Even when the package tray 1 is manufactured, the manufacturing methods of the first and second embodiments of the present invention can be applied.

Further, in the first and second embodiments of the present invention, although heating the substrate 1a in a heating furnace 2 using the far infrared, if it is possible to raise the temperature of the substrate 1a to the softening temperature T ₁ of , It may be heated by other methods.

Further, in the first and second embodiments of the present invention, the outer peripheral portion of the sheet material 1d is cut at the time of molding by providing the cutting blade 31b at a position near the outer peripheral edge of the upper pressure surface 31a in the upper mold 31 of the molding die 3. The press-molded body P1 is obtained, but the present invention is not limited to this, for example, a molding die of a sheet material 1d formed when a trim die is arranged around the molding die 3 and the molding die 3 is closed. A press-molded body P1 may be obtained by cutting off the portion protruding from 3 with a trim mold.

Further, in the package tray 1 manufactured by the manufacturing methods of the first and second embodiments of the present invention, the base material 1a is made of glass fiber reinforced polypropylene, and the skin material 1b and the back surface material 1c are made of polypropylene fiber. Even if the base material 1a, the skin material 1b, and the back surface material 1c are made of other resin materials, they can be manufactured by using the manufacturing method of the embodiment of the present invention. For example, the base material 1a is formed of a composite material of glass fiber and cellulose nanofiber, a composite material of glass fiber, polypropylene and cellulose nanofiber, a composite material of wood powder and polypropylene, needle punch felt, polypropylene and the like. The skin material 1b and the back material 1c may be made of polypropylene terephthalate fiber, polyvinyl chloride fiber, polypropylene terephthalate fiber, polyurethane fiber, acrylic fiber, rubber, leather, rayon, silk, acetate or the like. Good.

Although the package tray 1 is manufactured in the embodiment of the present invention, the manufacturing method of the present invention can also be applied when manufacturing other interior parts and exterior parts of the vehicle.

The present invention is suitable, for example, for a method for manufacturing resin interior parts and exterior parts to be mounted on a vehicle such as an automobile.

1 Package tray (panel-shaped resin parts)
1a Base material (resin layer)
1b Skin material 1e Sharpened part 5 Fixing jig 51a First annular clamp part 52a Second annular clamp part 61a Block type 61d Curved surface (contact surface)
61e Curved recess P1 press molded body (panel-shaped molded body)

Claims (5)

A fixing jig for fixing a panel-shaped molded body having at least one resin layer whose outer peripheral edge is cut in the plate thickness direction and a block type capable of advancing and retreating toward the fixing jig are prepared.
After fixing the panel-shaped molded product to the fixing jig in a state where the block mold is retracted with respect to the fixing jig, the block mold is moved forward by raising the temperature to a predetermined softening temperature for softening the resin layer. A method for manufacturing a panel-shaped resin part, which comprises deforming the sharp part to obtain a panel-shaped resin part by contacting the sharp part of the cut-processed portion of the panel-shaped molded product from the tip side thereof. In the method for manufacturing a panel-shaped resin part according to claim 1,
The fixing jig is configured to fix the panel-shaped molded body in a posture in which the sharp portion faces upward.
The block type is arranged on the side of the fixing jig, and is configured to move forward and backward with respect to the fixing jig by moving in the horizontal direction.
The contact portion of the block mold with the panel-shaped molded body is characterized in that a contact surface is formed which is curved or inclined so as to be gradually positioned downward as the block mold recedes. Manufacturing method of panel-shaped resin parts. In the method for manufacturing a panel-shaped resin part according to claim 1,
The fixing jig is configured to fix the panel-shaped molded body in a posture in which the sharp portion faces upward.
The block type is arranged on the upper side of the fixing jig, and is configured to move forward and backward with respect to the fixing jig by moving in an oblique direction.
A method for manufacturing a panel-shaped resin component, characterized in that a curved recess that opens in the forward direction of the block mold is formed in a portion of the block mold that comes into contact with the panel-shaped molded body. In the method for manufacturing a panel-shaped resin part according to any one of claims 1 to 3.
The fixing jig includes first and second annular clamp portions having a shape corresponding to the outer peripheral edge portion of the panel-shaped molded body.
In the first and second annular clamp portions, the outer peripheral edge portion of the first annular clamp portion is located outside the outer peripheral edge portion on the side opposite to the protruding direction of the sharp portion in the panel-shaped molded body, and The panel-shaped resin component is sandwiched and fixed so that the outer peripheral edge portion of the second annular clamp portion is located inside the outer peripheral edge portion on the protruding side of the sharp portion in the panel-shaped molded body. Manufacturing method of panel-shaped resin parts. In the method for manufacturing a panel-shaped resin part according to any one of claims 1 to 4.
The panel-shaped molded body has a shape that is symmetrical in the horizontal direction.
At least a pair of the block molds are provided symmetrically in the horizontal direction with the axis of symmetry of the panel-shaped molded body fixed to the fixing jig as a boundary, and the paired block molds are synchronized with each other with respect to the fixing jig. A method for manufacturing a panel-shaped resin part, which comprises moving forward at the same time.