JPS6349409A - Manufacture of resin composite article - Google Patents

Abstract

PURPOSE:To manufacture a high-quality resin composite article, by a method wherein ready-made parts are interposed among top, intermediate and bottom forces, the circumference of the ready-made parts is filled with resin raw materials, pressurization and heating are performed at a time and fresh resin parts are molded for adhesion. CONSTITUTION:Both an intermediate force 20 and a bottom force 30 are fixed to each other by screwing a positioning bolt into a positioning bolt hole of the bottom force 30 through a positioning bolt hole 21 of the intermediate force 20. Then a predetermined quantity of powder or pellets or small pieces of sheets of thermosetting synthetic resin of the same quality as a ready-made pipe A is loaded into an intermediate cavity part of the intermediate force 20. Then simultaneously with pressing by applying an appropriate pressure to the top force 10 from the upper part, the same is heated up to the molding temperature of the raw material, and this state is kept on for a necessary period of time. With this construction, as the inside of the mold is filled uniformly with the raw material such as powder by melting the raw material and the material is pressurized, thus air in the raw materials is driven out, conductivity of heat is improved, the molten raw material is stuck integrally with the ready-made pipe A, and solidified with a smooth surface.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a method for manufacturing a resin composite article.

BACKGROUND OF THE INVENTION Conventionally, in order to manufacture resin composite products, ready-made parts were individually molded and fixed together using an adhesive or the like.

Problems to be Solved by the Invention As a result, it took a lot of effort to manufacture and remove the adhesive sticking out, and the adhesive became brittle, causing the bonded part to peel off.

It is an object of the present invention to provide a method for producing a resin composite product that solves the above-mentioned problems and that can be easily produced with high quality through simple steps and without the possibility of problems caused by adhesives.

Means for Solving the Problems In order to achieve the above object, the structure of the present invention is as described above. That is, by interposing a ready-made part between the upper, middle and lower molds,
! The resin raw material is filled around the parts, each of these molds is closed, pressurized, and heated at the same time. ! This involves molding a new resin part around the part and fixing the two together.

An appropriate amount of TEL raw material is filled around the ready-made parts in the working mold, the mold is closed, and the molding process is carried out under pressure and heat. ! A new part is integrally molded into a part using a new material.

EXAMPLE The present invention will be described below based on an example shown in the drawings. In this embodiment, a case will be described in which a male threaded portion B of the same quality is integrally molded on the outer periphery of a ready-made pipe A made of a thermosetting resin.

During the molding, an upper mold 10, a middle mold 20, a lower mold 30, and a core metal C for reinforcing the ready-made pipe A are used, as shown in Fig. PtfJ1.

As shown in FIGS. 2 and 3, the upper mold 10 includes a rectangular main body 11 having a threaded surface 11a formed in the middle part in the longitudinal direction of the lower surface, and two assembly pins on the upper surface of the main body. 13 and four assembly bolts 14, and a rectangular mounting plate 12 that is fixed downwardly at four corners of the mounting plate. The mounting plate 12 is attached to the fixed plate side of the press by inserting bolts into press mounting holes 12a provided at its four corners. Also, mounting plate 1
A heating device (not shown) is attached to the upper surface of 2.

In the main body 11, the length direction (f
53 (left and right direction)) On the base side (right side) and tip side (left side), the boss B1 with a base radius and the large diameter part B of the tip side boss of the male threaded part B, the base radius corresponding to the base side radius (Fig. 1), respectively. A concave surface 11b and a large diameter concave surface 11c are formed.

Next, the medium 20 consists of a rectangular frame as shown in FIGS. 4 and 5, and positioning bolt holes 21 passing through the frame vertically are provided at the four corners. A guide hole 23 is bored through which the id pin 15 is inserted. In addition, bottomed bottle holes 22 that engage with positioning pins 37 of a lower die 30 described later are bored on the lower surfaces of both sides in the width direction (!@top and bottom directions in FIG. 5). A base concave surface 20d and a first concave distal surface 20e, which form a semi-cylindrical surface along the circumferential direction of the ready-made pipe A, are formed on the lower surface of both sides in the longitudinal direction (left and right direction in FIG. 5) of the medium 20. Ru. Then, this first concave surface 20el on the distal side: a second concave surface 20r corresponding to the small diameter portion B3 of the distal boss of the male threaded component B in the adjacent proximal direction; Core metal C
A third concave surface 20g having a semi-cylindrical shape along the circumferential direction is provided.

As shown in FIGS. 6 and 7, the lower mold 30 has a semi-cylindrical shape in which the upper surface extends along the circumferential direction of the ready-made pipe A and the core metal C in the width direction (vertical direction in FIG. 6), and a rectangular main body 31 having various types of shaped surfaces, a rectangular mounting plate 32 integrally assembled to the lower surface of the main body using two assembly bolts 33 and four assembly bolts 34; It consists of positioning pins 37 protruding from both sides of the main body 31 in the width direction. The upper surface of the main body 31 is provided with a bottomed id squeezing hole 35 into which the id rod 15 of the upper frame 10 can be inserted. Mounting plate 32
is attached to the movable plate side of the press by inserting bolts into the press attachment holes 36 at its four corners. A heating device is provided on the bottom surface of the mounting plate 32! 1 (not shown) is attached.

On the upper surface of the main body 31, a threaded surface 31a corresponding to the threaded surface 11a of the upper mold 10 is provided at the intermediate portion in the longitudinal direction.
Further, a concave surface 311 corresponding to the base rounded concave surface 11b] and a so-called concave surface 31d corresponding to the base concave surface 20d of the middle mold 20 are provided on the base side thereof. Further, on the tip side of the screw mold surface 31a, the upper mold 1
Tip side large diameter concave surface 3 corresponding to tip side large diameter concave surface 11c of 0
1c, a preemptive small diameter concave surface 31e corresponding to the preemptive first concave surface 20e of the medium 20, a second concave surface 2Ofi corresponding to the preemptive small diameter concave surface 31f, and a third concave surface 20g. A positioning bolt hole 38 with a bottom is bored in the vicinity of each of the guide holes 35 of the main body 31 in which the tip side core metal diameter face 31g is formed. This bolt hole has a positioning bolt hole 21 when the medium 20 is assembled.
A positioning bolt (not shown) is screwed through.

When manufacturing a synthetic ILIIW composite product using the above-mentioned mold consisting of the upper, middle and lower parts, a ready-made pipe A with a core C inserted therein is placed along the length direction of the lower mold 30, and the pipe A is placed above it. Overlap the medium size 20 pieces. During this overlapping, the lower mold 3
Correct assembly is achieved by inserting the positioning pin 37 of No. 0 into the pin hole 22 of the medium 20. Then, a positioning bolt (not shown) is screwed into the positioning bolt hole 38 of the lower mold 30 through the positioning bolt hole 21 of the middle mold 20 to fix both. Next, a predetermined amount of thermosetting synthetic side bending powder, pellets, sheet strips, etc. of the same quality as the ready-made pipe A is put into the hollow part of the medium mold 20.

Subsequently, the upper mold 10 is assembled so that its guide rod 15 is inserted into the hole 23, 35 of the middle mold 20 and the lower mold 30. By this assembly, the threaded surface 11a of the upper mold 10, the concave surface 11b with radius on the base side, the large diameter concave surface 11c on the distal side, the concave surface 20d on the base side of the middle mold 20, the first concave surface 20e on the distal side, the second concave surface Surface 20f, third concave surface 20g
, the threaded surface 31a of the lower mold 30, and the concave surface 3 with radius on the base side.
1b, a large diameter concave surface 31c on the tip side and a concave surface 31d on the base side,
The forward pipe diameter concave surface 31e, the forward small diameter concave surface 31f, and the forward small diameter concave surface 31g continuously form an annular mold surface.

Then, while pressing by applying appropriate pressure from above the upper mold 10, the raw material is heated to the molding temperature (120 to 150° C. in the example) using a heating device, and this state is maintained for a required time.

As a result, the raw materials such as the powder are melted and uniformly filled in the mold, and by pressurization, the air contained in the raw materials is expelled, the heat conductivity is increased, and the molten raw materials are connected to the ready-made pipe A. The UIA adheres to the whole, and the surface becomes smooth and solidified.

Therefore, open the top and middle size 10.20 and take out the product.
The desired synthetic resin component is completed by pulling out the core metal C and removing the flakes.

FIG. 8 shows another embodiment of the mold, which is divided in the axial direction of the thread and integrally molds the male threaded portion B on the outer periphery of the pipe A by applying pressure in the axial direction.

The mold of this example is an upper mold 40. 1st medium size 50. It consists of a PJ2 middle mold 60 and a lower mold 70. As shown in Fig. tJS9, the upper mold 40 corresponds to a cylindrical surface 41 along the outer peripheral surface of the ready-made pipe A, and a concave surface B1 with a radius on the base side of the externally threaded portion B, which continues below the surface. Conical mold surface 42
A mounting 7 flange 43 is formed at the top of the ring body. The attachment 7 flange 43 is provided with a press attachment hole 44 and an assembly hole 45 that penetrate in the vertical direction.

The first medium mold 50 has a threaded surface 51 inside as shown in the 10th figure.
is formed, and upper and lower mountings 7 runno 52.5 are formed on the upper and lower outer surfaces.
It consists of a ring body provided with 3. The second mounting hole 52 has an assembly screw hole 52 corresponding to the assembly hole 45 of the upper die 40.
a is provided, and the lower mounting 7 runno 53 is also provided with another assembly screw hole 53b that passes through it vertically.

Next, the foil 2 medium mold 60 is inserted into the first medium mold 5 as shown in FIG.
It is made up of a ring body that can be placed on the upper mounting 7 run of No. 0, and has an upper mold guide surface 61 that fits with the upper mold 40 formed therein, and also has an assembly hole 62 that passes through it vertically.

The upper mold 40, the first middle mold 50, and the second middle mold 60 can be assembled using the mounting bolts 1 inserted through the respective mounting holes 44, 52a, and 62.

Further, as shown in FIG. 12, the lower die 70 has a horizontal receiving surface 71 for the male threaded portion B, and a large diameter portion B2 and a small diameter portion B of the forward boss of the male threaded portion B, respectively. A diameter boss circular mold surface 72, a small boss cylindrical mold surface 73, a cylindrical surface 74 corresponding to the outer peripheral surface of the ready-made pipe A, a horizontal receiving surface 75 for the ready-made pipe, and a cylindrical surface along the outer peripheral surface of the core bar C. 76 are formed.

The lower mold 70 is also provided with an assembly hole 77 passing through it vertically, and the assembly bolt 2 is inserted through the scattering hole 77 and the assembly hole 53b of the first intermediate mold 50 to attach the first intermediate mold to the lower mold 70. 50 can be assembled.

The present invention is not limited to the pipe of the above embodiment, but also applies to other shaped parts or products, such as fixing the blades of a butterfly valve to a spindle.

The method of the present invention can be applied not only to the above-mentioned thermosetting synthetic resins but also to thermoplastic synthetic resins by appropriately determining the pressing force and heating temperature. It also applies to natural resins.

It also applies to metal parts and synthetic resin parts that are different from the existing 91 parts.

Effects of the Invention As described above, the present invention interposes a ready-made part between the upper, middle and lower molds, fills the ready-made part with υ (fat raw material), closes these molds, pressurizes them, and heats them at the same time. However, since a new resin part is molded around the ready-made part and the two are fixed together, a resin composite product that can be manufactured easily through simple steps and that is firmly fixed and of good quality can be obtained.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an implementation state of an embodiment of the present invention;
Figure 2 is a longitudinal sectional view of the upper mold, #tJ3 is its bottom view,
Figure 4 is a vertical cross-sectional view of the middle mold, Figure 5 is its bottom view, and Figure 6 is a vertical cross-sectional view of the middle mold.
The figure is a plan view of the lower mold, FIG. 7 is a vertical sectional view thereof, FIG. 8 is a vertical sectional view showing the implementation state of another embodiment, FIG. 9 is a cutaway front view of the upper mold, and FIG. 10 11 is a cutaway front view of the first middle mold, FIG. 11 is a cutaway front view of the second middle mold, and FIG. 12 is a cutaway front view of the lower mold.

Claims (1)

[Claims] A ready-made part is interposed between the upper, middle and lower molds, resin raw material is filled around the ready-made part, each of these molds is closed, pressurized and heated, and a new resin part is molded around the ready-made part. A method for producing a resin composite product, characterized in that the two are fixed together.