Production device for aluminum alloy baseball bar

Abstract

The invention relates to a production device for an aluminum alloy baseballbar. The device comprises a rolling machine body, wherein the rolling machine body comprises a feeding rotating box, a feeding bed, a driving wheel and a main machine head; rollers are arranged in the main machine head; the main machine head is connected with the driving wheel through a connecting rod to form a crank sliding block mechanism; the feeding bed comprises a material propping tube and a mandrel; one end of the mandrel is connected with the feeding rotating box and while the other end of the mandrel is connected with a detachable core bar; the rollers are vertically symmetrically respectively arranged at two sides of the core bar; annular semicircular grooves are formed in outer circles of the rollers and respectively positioned in two sides of the core bar and form roller mould cavity with the core bar; the appearance curve is rolled through the rollers; the inner wall is controlled through the core bar; therefore, the wall thickness of the baseball bar can be controlled from inside and outside, and as a result, the wall thickness, weight and length of the product can be accurately controlled; the rollers and the core bars can be adjusted again according to the specification demand of the baseball bar. The device is wide in applicable scope, high in efficiency, and suitable for mass popularization.

Description

technical field [0001] The invention relates to a two-roller cold rolling mill, in particular to an aluminum alloy baseball bat production equipment. Background technique [0002] A baseball bat is a stick used by batters to hit the ball in a baseball game. There are three common types of bats: wooden bats, aluminum bats, and composite bats. In addition to being used as sporting goods, aluminum rods are also used as self-defense tools for cars and households because of their overall lightness and relatively light harm to the human body. In the prior art, aluminum alloy baseball bats are generally realized by roller type rotary forging technology. [0003] Rotary forging is a forming process for long shaft or tube workpieces. Hitting the workpiece with high-frequency radial reciprocating motion, the workpiece rotates and moves axially, and the workpiece realizes radial compression and length extension deformation under the impact of the hammer head. Existing forging machin...

AI Technical Summary

Problems solved by technology

Existing forging machines can produce the following defects when making aluminum alloy baseball bats: 1. Since the forging is only extruded from the outside to the inside, the inner cavity of the forged aluminum alloy baseball bat is unlimited, resulting in uncontrollable wall thickness and weight of the bat. After forming, the length is inconsistent or the same length but the weight is inconsistent, and even wrinkles or cracks that cannot be seen from the appearance will appear. The wall thickness of the baseball bat from the curve section to the handle section of the small head will gradually become thicker, causing the center of gravity to be biased towards the small head

2. Since the forging process is that a pipe material is gradually fed from the big end to the small end of the mold, and it becomes smaller by rotation and forging. After forming, it can only be taken out from the same side, so the mechanical action is cumbersome and inefficient.

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