JPS646969Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an extrusion molding die, particularly a die for hot processing an aluminum alloy.

Extruded aluminum profiles have conventionally been formed by using a die having a bearing portion of a predetermined cross section, inserting a pillar into the die, and extruding it. In recent years, extruded aluminum shapes have been widely used as building materials, and there is a strong desire to improve their productivity. On the other hand, from the viewpoint of energy saving and resource saving, increasing yield is considered important. Therefore, if a single die can be used to extrude multiple sections of the same shape, productivity will improve, but problems such as uneven lengths of the extruded sections will occur, resulting in a decrease in yield. It is necessary to adjust the uneven lengths. In order to adjust this length irregularity, there is a method that includes a rectifier resistor section with an opening wider than the bearing width on the front side of the bearing section, but this makes it difficult to set the shape of the rectifier resistor section. . Therefore, in view of the above-mentioned circumstances, this invention has a bulged surface for adjusting the extrusion speed on the front surface of the die where the bearing part opens, in order to easily adjust the length irregularities of the extruded shapes, that is, to easily adjust the extrusion speed. The biggest feature is that it was formed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to specific embodiments shown in the accompanying drawings.

A is an ordinary extrusion processing machine, which extrudes an aluminum pillar 6 charged into a container 5 through a bearing part 2 of a predetermined shape drilled in a die 1 by a ram 7 to extract a product (shape) 8. It is set as.

Here, a planar bulging surface 4 for adjusting the extrusion speed is formed on the front surface of the die 1, and the bearing portion 2 is opened therein. By removing this bulging surface 4, the length l of the bearing portion 2 can be easily adjusted. If the length l is long, the resistance is large and the extrusion speed is slow, and if the length l is short, the resistance is small and the extrusion speed is fast. The relief hole 3 is a conical gap formed at the outlet of the bearing part 2, and allows the product 8 to pass through without giving any resistance.

Since it is easier to remove the planar bulging surface 4 than to remove the curved protrusion, the extrusion speed can also be easily adjusted.

Furthermore, if the holes are formed so that a plurality of shapes can be extruded using one die, as shown in FIG. 2, the length of any of the shapes can be adjusted.

As mentioned above, in the present invention, a bulging surface for adjusting the extrusion speed is formed on the front surface of the die where the bearing part opens, and by removing this bulging surface, the length of the bearing part can be adjusted. The extrusion speed can be adjusted very easily. This allows adjustment of uneven lengths of extruded shapes, improves yield, and helps save energy and resources. Further, since the bulge is formed on the front surface of the die, it is easy to grasp the polishing allowance, so that the adjustment work is reliable. Further, while maintaining the surface quality of the extruded section above a certain level, the extruded section can be processed at as high an extrusion speed as possible, improving productivity.

[Brief explanation of drawings]

The drawings show a specific embodiment of the present invention; Fig. 1 is a sectional view of an extrusion processing machine, Fig. 2 is a front view of a die,
FIG. 3 is a sectional view of FIG. 2. 1...Dice, 2...Bearing part, 3...Escape hole,
4...Bulging surface.

Claims (1)

[Scope of utility model registration request] An aluminum extrusion molding die capable of extruding multiple pieces of the same shape, die 1
The bearing part 2 and relief hole 3 are drilled in series,
A die for aluminum extrusion molding, characterized in that a planar bulging surface 4 for adjusting extrusion speed is formed on the front surface of the die 1, and the bearing portion 2 is opened in the bulging surface 4.