Split type shearing pad for large aluminum profile extruding machine

Abstract

A split type shearing pad for a large aluminum profile extruder belongs to the technical field of nonferrous metal processing and manufacturing, and is characterized by comprising an inner shearing pad and an outer shearing sleeve, the inner shearing pad is embedded in the outer shearing sleeve, the inner shearing pad and the outer shearing sleeve are in clearance fit, positioned through a positioning pin and fixedly connected through a bolt, the front end face of the inner shearing pad is higher than the front section of the outer shearing sleeve, and shearing edges on the two sides of the inner shearing pad reserve acute angles and are not chamfered. The split type shearing pad has the advantages that when the shearing pad is scrapped due to deformation or cracking and needs to be integrally replaced, the cost is high, the production period is long, the split type shearing pad only needs to be replaced once the shearing pad is damaged in the production process through the design of the independent inner shearing pad, and therefore the manufacturing cost is reduced, and the production efficiency is improved. The production period is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of non-ferrous metal processing and manufacturing, and relates to an improvement of an aluminum profile extrusion shear pad. Background Art

[0002] In the process of aluminum alloy profile extrusion, in order to ensure the forming quality and production efficiency of the profile, the role of the shear pad is crucial. The traditional shear pad is of an integral design. When it collapses and deforms or cracks due to stress concentration at the corners, the shear pad needs to be replaced as a whole, which not only has a high cost but also a long production cycle, affecting the production efficiency. Summary of the Invention

[0003] The purpose of the utility model is to provide a split shear pad for a large aluminum profile extruder. The shear pad is of a split design, and the worn inner shear pad and the outer sleeve are designed separately, thereby reducing the production cost and improving the production efficiency.

[0004] The technical solution of the utility model is: it consists of two parts, an inner shear pad and an outer shear sleeve. The inner shear pad is embedded in the outer shear sleeve, and there is a clearance fit between the inner shear pad and the outer shear sleeve. It is positioned by a positioning pin and fixed by bolts. The front end face of the inner shear pad is higher than the front section of the outer shear sleeve, and the two shear edges on both sides of the inner shear pad are kept sharp without chamfering.

[0005] The beneficial effect of the utility model is: when the shear pad deforms or cracks and is scrapped, it needs to be replaced as a whole, which not only has a high cost but also a long production cycle. For the split shear pad of the utility model, through the independent design of the inner shear pad, once the shear pad is damaged during the production process, only the inner shear pad needs to be replaced, thereby reducing the manufacturing cost, shortening the production cycle, and improving the production efficiency. Brief Description of the Drawings

[0006] Figure 1 is the side sectional view of the utility model;

[0007] Figure 2 is the front view of the inner shear pad of the utility model;

[0008] Figure 3 is the side sectional view of the inner shear pad of the utility model;

[0009] Figure 4 is the front view of the outer shear sleeve of the utility model;

[0010] Figure 5 is the side sectional view of the outer shear sleeve of the utility model. Detailed Description of the Invention

[0011] The following further describes the utility model with reference to the drawings:

[0012] AsFigure 1 , 2 As shown in Figures 3 and 4, 1 is the inner shear pad; 2 is the outer shear sleeve; 3 is the inner shear pad locating pin; 4 is the outer shear sleeve locating groove.

[0013] As Figure 2 , 3 shown, 11 is the front end face of the inner shear pad; 12 is the rear end face of the inner shear pad; 13 are the two-side shear edges of the inner shear pad.

[0014] As Figure 4 , 5 shown, 21 is the front end face of the outer shear sleeve; 22 is the middle end face of the outer shear sleeve.

[0015] In Figures 1-5 this utility model, after the rear end face (12) of the inner shear pad fits with the middle end face of the outer shear sleeve (22), the inner shear pad (1) and the outer shear sleeve (2) are fixed with four sets of socket head cap screws after being positioned by the inner shear pad locating pin (3) and the outer shear sleeve locating groove (4). Among them, the front end face (11) of the inner shear pad protrudes from the front end face (21) of the outer shear sleeve by hmm; the two-side shear edges (13) of the inner shear pad are kept with acute angles without chamfering, which is beneficial to cutting off the extruded aluminum alloy profiles; the inner shear pad (1) and the outer shear sleeve (2) are made of different materials, combining cost and performance to achieve a balance between economy and durability. The inner shear pad (1) uses H13 medium alloy hot work die steel, and the outer shear sleeve (2) uses 5CrNiMo low alloy hot work die steel.

Claims

1. A split shear pad for a large aluminum profile extruder, characterized in that: It consists of two parts: an inner shear pad and an outer shear sleeve; the inner shear pad is embedded in the outer shear sleeve, with a clearance fit between the inner shear pad and the outer shear sleeve, positioned by a positioning pin, fixed by bolt connection, the front end face of the inner shear pad is higher than the front section of the outer shear sleeve, and the shear edges on both sides of the inner shear pad are kept with acute angles without chamfering.

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