Power-and-free material-loading and transporting apparatus used for material-basket-free thermal-treatment furnace of aluminum alloy product

Abstract

A power-and-free material-loading and transporting apparatus used for a material-basket-free thermal-treatment furnace of an aluminum alloy product belongs to the technical filed of thermal treatment devices of the aluminum alloy product. By means of parts, including a transporting roller track, a pre-assembling roller track, a material pushing machine, a material-feeding detection photoelectric tube, a material-full detection photoelectric tube, a power-and-free roller track, a removing roller cylinder, a removing motor, a material-loading fork and the like, the power-and-free material-loading and transporting apparatus enables workpieces arranged in a material-loading zone on the power-and-free roller track to be changed from one row into two or more rows, wherein the workpieces are pre-arranged by a material baffle. Redundant workpieces are removed from the roller cylinder and from the material-loading zone. The pieces in the material-loading zone are sent to the thermal-treatment furnace by the material-loading fork in one step for thermal treatment. By means of the power-and-free material-loading and transporting apparatus, automatic level of the device is improved and time period during material loading is effectively prolonged. In addition, the power-and-free material-loading and transporting apparatus can increase effective space in the thermal-treatment furnace by 20%, can reduce a production cost and can increase energy resource utilization rate.

Description

technical field [0001] The invention belongs to the technical field of heat treatment equipment for aluminum alloy products, and is particularly suitable for a material delivery device for continuous heat treatment furnaces for aluminum alloy products such as automobile wheels without material baskets. Background technique [0002] Traditional continuous heat treatment furnaces for aluminum alloy products mostly use basket-type conveying devices to transport materials, but basket-type heat treatment furnaces need to constantly maintain and update the baskets loaded with workpieces to be processed It needs to absorb heat, which leads to long heating time, high energy consumption, and manual loading and unloading of workpieces and baskets, which makes it difficult to automate production. Therefore, in the aluminum alloy product manufacturing industry, heat treatment furnaces with baskets have gradually been replaced by basketless heat treatment furnaces. Basket-free heat treat...

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Problems solved by technology

Because the forward distance A of each conveying is a fixed value, when the workpiece size B is larger, the value of the spacing dimension C becomes smaller. When the workpiece size B is extremely large or even exceeds A, the spacing C is zero or negative. When C is When the value is negative, the workpieces in this row will squeeze and interfere with the previous workpieces, causing the workpieces to pile up in disorder, and even damage the conveying parts in the furnace, causing serious conveying failures; and when the workpiece specification B is small, the distance C between the workpieces will be Too large, resulting in insufficient utilization of the effective space in the furnace, resulting in waste of energy

In addition, due to the pursuit of economies of scale, the annual output of heat treatment furnaces is generally required to be more than one million pieces. When the output increases, the delivery cycle will be accelerated, and the interval between each delivery will be significantly shortened.

Due to the effective width of the furnace (such as figure 1 The limitation shown in L in ) leads to a limited number of workpieces in each row, and a too short conveying time period will increase the failure rate due to the excessively fast action frequency of the conveying device, and the discharge quenching time has strict process requirements. Rapid discharge quenching will cause many problems such as insufficient quenching time and failure to meet the heat treatment process requirements

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