Aluminum alloy heat insulation penetrating strip material extrusion die capable of avoiding shadows

Abstract

The invention discloses an aluminum alloy heat insulation penetrating strip material extrusion die capable of avoiding shadows, which comprises a left die and a right die which are matched with each other, a hole is formed in one side surface of the left die in a penetrating manner, a shunting bridge is arranged in the hole, the hole forms four independent shunting holes through the shunting bridge, the shunting bridge is arranged to be H-shaped, and the left die and the right die are mutually matched. An extension block is connected to the surface of the side, close to the right die, of the middle section of the diversion bridge, and a forming work head is connected to the outer side of the other end of the extension block. The working tape used for profile forming is separated from the diversion bridge, so that the working tape is located in the holes and is not blocked by the diversion bridge, and therefore when aluminum flow flows into the right die through the four diversion holes, the flow speed, temperature and resistance of the aluminum flow penetrating through the working tape are similar, integration is high, and the service life of the aluminum flow is prolonged. Therefore, shadows are prevented from being generated on the lower surface of the pipe cavity of the profile extruded and formed at the forming work head, the production qualification rate of the profile is improved, and the rejection rate is low.

Description

technical field [0001] The invention relates to the technical field of hot extrusion dies, in particular to an aluminum alloy heat-insulating strip material extrusion die which avoids shadows. Background technique [0002] Strip heat-insulating aluminum profile is to extrude two aluminum profiles and connect them into one aluminum profile through two rubber strips to form a heat-insulating profile. Today, with the rapid development of society, the construction industry is booming. Strips are widely used in doors and windows of various buildings, and most of these types of profiles need to be produced by hot extrusion. Among them, the aluminum alloy heat-insulating strips are connected by two adhesive strips. A strip of aluminum profile, formed into a heat-insulating profile for use, [0003] However, during the production of heat-insulating strip profiles with a tube cavity and long legs, the traditional design method is to arrange four diverter holes on the four corners of...

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Problems solved by technology

[0003] However, in the production of heat-insulating piercing strip profiles with a tube cavity and long legs, the traditional design method is to arrange four shunt holes on the four corners of the mold, and set the forming foreman directly on one side of the shunt bridge, so that The working belt is close to the shunt bridge. Due to the blockage of the shunt bridge on the surface of the profile extruded by this method, when the molten aluminum passes through the joint of the mold, it is easy to produce shadows, that is, the flow rate of the aluminum flow to the working belt is not uniform, and the temperature is different. Difficult to fuse, at this time, shadows will appear on the lower surface of the lumen of the profile, which will lead to unqualified production of the profile and high scrap rate

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