JPH05337962A - Production of molded panel - Google Patents

Abstract

PURPOSE:To prevent the occurrence positional shift between the surface shape of a molded panel and the area to which post-processing treatment is applied of the panel. CONSTITUTION:A molded panel 30 having an almost horizontal-U shape cross section is molded by a mold 22 consisting of a lower mold 14, an upper mold 18 and the slide mold 20 provided to the lower mold 14 and the surface shape of the molded panel 30 is formed by the fixed mold consisting of the lower mold 14 and the slide mold 20. Next, a positioning hole is formed to the side wall part of the molded panel 30 within the mold 22 by the perforating blade held to the slide mold 20 in a state possible to advance and retreat. After the molded panel 30 having the positioning hole formed thereto is demolded from the mold 22, the positioning pin provided to a triming jig being a post-processing jig is inserted in the positioning hole of the molded panel 30 to set the molded panel to the trimming jig to apply trimming to the molded panel 30 as post- processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a molded panel, and more particularly to a method for post-processing a molded panel after molding.

[0002]

2. Description of the Related Art As a method of manufacturing a molded panel, as disclosed in Japanese Patent Laid-Open No. 63-99912, after a vacuum is applied to a fixed mold having a vacuum suction hole to set a skin material, A method is known in which a foaming raw material is charged and a movable mold is clamped to foam-mold a molded panel. In addition, when performing post-processing on the molded panel, the molded panel after demolding is set on a post-processing jig with the back surface of the molded panel as a reference, and then a hole is formed in the molded panel, Post-processing such as peripheral cutting is performed.

[0003]

However, the build-up of the mold release agent to the mold, that is, the mold release agent deposited on the mold, or the error in the opening and closing accuracy between the fixed mold and the movable mold, etc. are caused. However, the thickness of the molded panel may be different from the predetermined thickness. Therefore, if a molding panel having a thickness different from the predetermined thickness is set in the jig for forming holes to form the positioning holes, the post-processing may not be performed between the positioning holes for post-processing and the surface shape of the molding panel. A positional deviation may occur between the applied portion and the surface shape of the molded panel, which may deteriorate the quality of the product.

In view of the above, according to the present invention, the surface shape of the molding panel and the post-processing are performed even if the mold release agent builds up with respect to the molding die or the opening and closing accuracy error between the fixed die and the movable die occurs. The purpose is to prevent a positional deviation from occurring with respect to the created part.

[0005]

In order to achieve the above object, the present invention is based on a mold in which the surface shape of the molding panel is molded with respect to the molding panel inside a molding mold for molding the molding panel. A positioning hole is formed.

[0006] Specifically, the means for solving the problems according to the present invention is to carry out a method for producing a molded panel, wherein the molding is carried out inside a molding die composed of a fixed die and a movable die in which a molding panel having a substantially U-shaped cross section is formed. A positioning hole is formed on the side wall of the panel with reference to the mold of the surface shape of the molding panel of the fixed mold and the movable mold, and the molding panel in which the positioning hole is formed is removed from the molding mold. After molding, the positioning pins provided on the post-processing jig are inserted into the positioning holes of the molded panel after demolding, and the molded panel is set on the above-described post-processing jig. The post-processing is performed on the above.

[0007]

With the above construction, since the positioning hole is formed in the molding die with respect to the molding panel, the positioning hole is formed on the basis of the mold having the surface shape of the molding panel, whichever is molded, of the fixed mold and the movable mold. There is no positional deviation from the surface shape. Therefore, when post-processing is performed in a state where the positioning pin of the post-processing jig is inserted into the positioning hole and the molding panel is set on the post-processing jig, the surface shape and the post-processed portion are No positional deviation occurs between them.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a sectional structure of a molding apparatus 10 used in a method of manufacturing a molded panel according to an embodiment of the present invention. A lower mold 14 is installed on an upper surface of a molding base 12 of the molding apparatus 10. There is. Inverted L-shaped hinge arms 16 and 16 are provided on the rear side of the upper surface of the molding die base 12 so as to be rotatable in the front-rear direction with respect to the base 12. The mold 18 is held. In addition, the slide mold 2 is provided between the lower mold 14 and the upper mold 18.
0 and 20 are arranged, and the slide die 20 is slidably provided with respect to the lower die 14. The lower die 14 and the slide die 20 described above constitute a fixed die, and the lower die 14, the upper die 18 and the slide die 20 constitute a molding die 22.

A pair of rotating hydraulic cylinders 24, 24 are rotatably mounted on the left and right sides of the upper surface of the mold base 12, and the piston rods 24a, 24a of the rotating hydraulic cylinders 24 are plate-like frames 26. Is held rotatably in the front-back direction. Lifting hydraulic cylinders 28, 28 are attached to the upper surface of the frame 26, and the upper die 18 is held by piston rods 28 a, 28 a of the lifting hydraulic cylinders 28. Therefore,
By operating the rotating hydraulic cylinder 24 while operating the lifting hydraulic cylinder 28 and raising the upper mold 18, the upper mold 18 approaches or separates from the lower mold 14 and the slide mold 20.

In FIG. 1, reference numeral 30 denotes a molding panel formed by a molding die 22 and having a substantially U-shaped cross section. The molding panel 30 is molded into a predetermined shape in advance, and then the lower mold 14 is formed. And a skin 32 made of, for example, vinyl chloride resin set on the upper surface of the slide die 20, and the skin 3
On the back surface side (upper side in FIG. 1) of 2, a base material 34 made of, for example, hard urethane foam resin is integrally foam-molded with the skin 32. In this case, the surface shape of the molding panel 30 is molded by a fixed mold including the lower mold 14 and the slide mold 20. A cylindrical pin holding portion 36 is provided substantially in the center of the cavity surface of the upper mold 18, and the reference pin 38 held by the pin holding portion 36 is inserted into the base material 34 of the molding panel 30.

Each slide die 20 is provided with through holes 40, 40 penetrating the slide die 20 inward and outward, and a hydraulic cylinder 42 for punching is formed in a portion of the outer surface of the slide die 20 where the through hole 40 is opened. 42 is provided, and as shown in detail in FIG. 2, the piston rod 42 a of the drilling hydraulic cylinder 42 extends into the through hole 40. At the tip of the piston rod 42a, a large diameter portion 44
Large diameter portion 44 of tubular member 44 including a and small diameter portion 44b
a is held, and a cylindrical drilling blade 46 having a sharp tip is held outside the small diameter portion 44b of the tubular member 44. Inside the cylindrical member 44 and the punching blade 46, an extruding member 48 including an extruding portion 48a having a tapered round bar shape and a rod portion 48b holding the extruding portion 48a is slidably provided. The coil spring 48 is urged toward the molding panel 30 by a coil spring 50 that is compressed between the pushing member 48 and the small diameter portion 44b of the tubular member 44 between the punching blade 46 and the rod portion 48b.
A receiving member 52 made of, for example, aluminum is provided at a portion of the cavity surface of the upper die 18 facing the tip of the punching blade 46.

Therefore, after molding the molding panel 30 with the molding die 22 as described above, as shown in FIG.
When the hydraulic cylinder 42 for punching is operated, the pushing member 48 is blocked by the molding panel 30 and does not advance, while the punching blade 46 advances, so that the punching blade 46 and the receiving member 52.
Positioning holes 54 are formed in the molded panel 30 by and. In this case, since the surface shape of the molding panel 30 is molded by the lower mold 14 and the slide mold 20, and the hole punching blade 46 is held by the slide mold 20 slidably provided on the lower mold 14, the positioning is performed. The holes 54 are formed on the basis of a fixed mold composed of the lower mold 14 and the slide mold 20 which are molds for molding the surface shape of the molding panel 30.

Further, since the pushing member 48 is biased toward the molding panel 30 by the coil spring 50, when the punching hydraulic cylinder 42 is actuated to retract the punching blade 46, the pushing member 48 is punched. Since it moves forward relative to the punching blade 46, the scraps remaining inside the punching blade 46 are discharged to the outside.

FIG. 4 shows a sectional structure of a trimming jig 56 as a post-processing jig used for trimming as post-processing in the method for manufacturing a molded panel according to an embodiment of the present invention. At the center of the upper surface of the jig base 58 of 56, a columnar horizontal positioning base 62 having a positioning recess 60 on the upper surface is provided upright.
The positioning recess 60 is formed on the cushion layer 3 of the molded panel 30.
The reference pin 38 is formed to be slightly larger than the reference pin 38 inserted in 4, and the reference pin 38 is fitted into the positioning recess 60 to position the molded panel 30 in the horizontal direction. Several pillar-shaped temporary support bases 64, 64 are provided at appropriate places on the upper surface of the jig base 58, and the molding panel 30 is placed and supported by the temporary support base 64 on the peripheral portion.

Positioning devices 66, 66 are provided on the upper surface of the jig base 58 in the vicinity of the temporary support base 64. The positioning device 66 includes a support base 68 fixed on the jig base 58. A positioning air cylinder 70 fixed to the support base 68, a slide member 72 slidably supported in the support base 68 inward and outward, and fixed to the tip of a piston rod 70a of the positioning air cylinder 70; The positioning pin 74 has a conical tip portion held at the tip of the member 72.

Therefore, as shown in FIG. 5, when the positioning air cylinder 70 is operated after the molded panel 30 is placed and supported on the temporary support base 64, the slide member 72 is operated.
As a result, the positioning pin 74 moves outward, and the positioning pin 74 is fitted into the positioning hole 54 of the molding panel 30 as shown in FIG. As a result, the molding panel 30 is positioned with respect to the trimming jig 56. In this case, the molded panel 30 slightly floats above the temporary support base 64 as the positioning pin 74 is fitted into the positioning hole 54.

Then, from the water jet nozzle 78 of the trimming robot 76 shown in FIG.
A water jet is jetted to the peripheral edge of 0 to trim the peripheral edge of the molded panel.

[0019]

As described above, according to the method of manufacturing a molded panel according to the present invention, the surface shape of the molded panel of the fixed mold and the movable mold is molded inside the mold with respect to the molded panel. Since the positioning hole is formed based on the mold, there is no positional deviation between the positioning hole and the surface shape. Therefore, the positioning pin of the post-processing jig is inserted into the positioning hole to post-process the molded panel. When the post-processing is performed by setting the jig on the jig, a positional deviation between the surface shape and the post-processed portion does not occur, and a molded panel of good quality can be obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a molding apparatus used in a method of manufacturing a molded panel according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state before a punching blade has advanced in the method for manufacturing a molded panel.

FIG. 3 is a cross-sectional view showing a state after a punching blade has advanced in the method for manufacturing a molded panel.

FIG. 4 is a cross-sectional view showing a trimming jig and a trimming robot used in the method for manufacturing the molded panel.

FIG. 5 is a cross-sectional view showing a state before the positioning pin advances in the method for manufacturing the molded panel.

FIG. 6 is a cross-sectional view showing a state after the positioning pin has advanced in the method for manufacturing a molded panel.

[Explanation of symbols]

 10 Molding device 14 Lower mold (fixed mold) 18 Upper mold (movable mold) 20 Slide mold (fixed mold) 22 Molding mold 30 Molding panel 54 Positioning hole 56 Trimming jig (post-processing jig) 66 Positioning device 70 Positioning Air Cylinder 74 Positioning Pin 76 Robot for Trimming

Claims (1)

[Claims] 1. A molding panel comprising a fixed mold and a movable mold, which molds a molding panel having a substantially U-shaped cross section. A positioning hole is formed on the basis of the mold whose surface shape is molded, the molding panel in which the positioning hole is formed is removed from the molding mold, and then the positioning pin provided on the post-processing jig is removed. A method for manufacturing a molded panel, characterized by inserting the molded panel into a positioning hole after demolding, setting the molded panel on the post-processing jig, and thereafter subjecting the molded panel to the post-processing. .