JPH08332663A - Method and apparatus for extrusion molding of synthetic resin - Google Patents

Abstract

PURPOSE: To perform the extrusion molding of a synthetic resin on an intermittently moving metal plate having a series of molding units. CONSTITUTION: After a metal plate is subjected to molding processing, the metal plate having a series of molding units B is cut into respective mold units B and the respective cut mold units B are passed through the extrusion opening part of an extrusion mold 6 and sent out to perform the extrusion molding of a synthetic resin on the respective mold units of the metal plate. A cutter 7 is arranged between the metal plate molding apparatus and the extrusion mold 6 and a insertion drive roller 8 and a feed-out drive roller 9 are arranged before and behind the extrusion mold 6 separately from a metal plate sending and moving drive roller.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin extrusion molding method and apparatus.

[0002]

2. Description of the Related Art A conventional extrusion molding apparatus is equipped with an extrusion die having a predetermined extrusion opening, and a resin passage for supplying molten resin from the extruder to the extrusion opening is connected to the extrusion opening of the extrusion die. Then, a molding metal plate is movably arranged in the extrusion opening of the extrusion die, a constant amount of resin is extruded through the resin passage into the extrusion opening by the extruder, and the extrusion moves at a constant speed through the extrusion opening. A synthetic resin is extruded on a metal plate.

[0003]

The extrusion molding apparatus of this kind described above continuously extrudes a constant amount of resin from a predetermined extrusion opening, so that when the movement of the molded metal plate is stopped, a predetermined amount of resin is extruded. Since it is not possible to obtain the resin shape of, it is necessary to stop the conveyed metal plate and perform the molding process, and to extrude the synthetic resin to the molded metal plate, each is done on a separate molding line. It was impossible to perform the molding process of the metal plate and the extrusion molding process of the synthetic resin for the molded metal plate in a series of molding lines.

An object of the present invention is to provide an extrusion molding method and apparatus for continuously extruding a synthetic resin into a series of intermittently moving metal sheets.

[0005]

The method of extruding a synthetic resin into a series of intermittently moving molded metal plates of the present invention is such that after the metal plate is molded and processed, the metal plate is cut into each molding unit, and after cutting. The synthetic resin is extrusion-molded into each molding unit of the metal plate by feeding each molding unit of (1) at a constant speed through the extrusion opening of the extrusion mold.

The apparatus for extrusion molding a synthetic resin into a series of intermittently moving molded metal plates according to the present invention is provided with a cutting device between the metal plate molding apparatus and the extrusion die, and is provided before and after the extrusion die. An insertion drive roller and a carry-out drive roller, which are driven separately from the metal plate feed movement drive roller, are arranged.

[0007]

EXAMPLE Next, an extrusion molding apparatus for carrying out the extrusion molding method of the present invention will be described with reference to a drawing showing an automatic production line of automobile moldings. FIG. 1 is a schematic explanatory view of an automatic manufacturing line for automobile moldings incorporating the extrusion molding apparatus of the present invention.

In FIG. 1, a metal plate A is wound around an uncoiler 1 in a coil shape. When the metal plate A is molded, it is pulled out of the uncoiler 1 by a drive roller 2 for moving a metal plate and guided by a guide roll 3. While being supplied to the molding device 4. When the metal plate A reaches a predetermined position in the molding device 4, the metal plate feed movement drive roller 2 stops its feeding operation, and the driving device provided in the molding device 4 causes the molding device 4 to move along the metal plate A. The metal plate is moved in the direction opposite to the feeding direction, and the molding device 4 bends and molds the unit B having a predetermined length on both sides of the metal plate A. When the unit B having a predetermined length and having a bending process is formed, the drive roller 2 for feeding and moving the metal plate is operated, and the forming unit B is formed.
The metal plate A and the metal plate A is sent to the downstream side.
And the molding device 4 forms the next unit B. As a result, a unit B having a predetermined length of bending on both sides is synchronized with the metal plate A being intermittently fed from the uncoiler 1 by the metal plate feed movement drive roller 2.
Are continuously formed by the molding device 4.

The metal plate A is supplied to the molding device 4 to supply the metal plate A.
A synthetic resin is extrusion-molded on a metal plate A having a series of molding units B which are intermittently moved by an extruder 5 after a series of molding units B having a predetermined length of bending are formed on both sides of However, before feeding the metal plate A to the extrusion die 6 attached to the extruder 5, a series of molding units B is provided by the cutting device 7 arranged between the molding device 4 and the extruder 6.
The metal plate A having is cut into each molding unit B. Each of the molding units B cut from the metal plate A is extruded from the extrusion die 6 at a constant speed by the insertion drive roller 8 and the ejection drive roller 9 arranged before and after the extrusion die 6 mounted on the extruder 5. It is adapted to be inserted into the opening and delivered from the extrusion opening after extrusion. A certain amount of synthetic resin is extruded from the extruder 5 into the extrusion opening of the extrusion die 6, and is driven by the insertion drive roller 8 and the unload drive roller 9 at a constant speed.
The synthetic resin is extrusion-molded into each molding unit B moving through the extrusion opening.

As shown in FIG. 2, a series of molding units B
A cutting device 7 for cutting the metal plate A having the above into each molding unit B is disposed between the molding device 4 and the extrusion die 6, and the cutting device 7 is provided in front of the extrusion die 6 on the downstream side of the cutting device 7. An insertion drive roller 8 for inserting each molding unit B cut by the above into the extrusion opening of the extrusion mold 6 at a constant speed is provided, and each molding unit B after extrusion molding is provided behind the extrusion mold 6.
A drive roller 9 for delivering the sheet from the extrusion die 6, and the drive roller 8 for insertion and the drive roller 9 for delivery disposed in front of and behind the extrusion die 6 interlock with each other to drive the metal plate to move. Since it is driven separately from 2, the molding units B can be fed through the extrusion die 6 at a constant speed regardless of the feeding movement of the driving roller 2.

After extrusion molding synthetic resin into each molding unit B of the metal plate A by the extrusion mold 6, each molding unit B is sent from the extrusion mold 6 onto the conveyor 10 by the unloading drive roller 9 and conveyed by the conveyor 10. By cooling each molding unit B by the cooling device 11, the core material of the molding unit B can be coated with the synthetic resin to manufacture an automobile molding.

[0012]

EFFECTS OF THE INVENTION The extrusion molding method and apparatus of the present invention is a method of molding a metal plate and then cutting the metal plate into respective molding units.
Since extrusion is performed by moving each molding unit after cutting through the extrusion opening of the extrusion mold at a constant speed, it is possible to always extrude a constant amount of resin onto a metal plate that moves at a constant speed. Therefore, a predetermined resin shape can be obtained, and the molding process of the metal plate and the extrusion molding of the synthetic resin onto the molded metal plate can be automatically performed in one molding line.

[Brief description of drawings]

FIG. 1 is an explanatory view of an automatic manufacturing line for automobile moldings in which an extrusion molding apparatus of the present invention is incorporated.

FIG. 2 is a side view of the extrusion molding apparatus of the present invention.

[Explanation of symbols]

 1 Uncoiler 2 Drive roller for moving metal plate 3 Guide roller 4 Molding device 5 Extruder 6 Extrusion die 7 Cutting device 8 Drive roller for insertion 9 Drive roller for unloading 10 Conveyor 11 Cooling measure A Metal plate B Molding unit

Claims (2)

[Claims] 1. A method of extrusion-molding a synthetic resin into a series of molding metal plates that move intermittently, after the metal plate is molded and processed, the metal plate is cut into each molding unit, and each molding unit after cutting is fixed. An extrusion molding method in which a synthetic resin is extrusion-molded into each molding unit of a metal plate by sending the synthetic resin through the extrusion opening of the extrusion mold at a speed of. 2. A device for extruding a synthetic resin into a series of intermittently moving molded metal plates, wherein a cutting device is provided between the metal plate molding device and the extrusion mold, and before and after the extrusion mold. An extrusion molding apparatus, characterized in that an insertion drive roller and an unloading drive roller, which are driven separately from the metal plate feed movement drive roller, are provided.