Manual core shaping machine and operation method thereof

Abstract

The invention discloses a manual core shaping machine and an operation method thereof. The manual core shaping machine comprises a stand, a hand wheel, a lead screw, a front fixing seat, exchangeable V-shaped blocks or exchangeable flat plates, a lifting platform, a dragging plate and a movable tailstock, wherein the front fixing seat is installed on one end of the stand, and the movable tailstock is installed on the other end of the stand; the dragging plate is installed in the middle of the stand, and the lifting platform is installed on the dragging plate; the hand wheel is connected with the exchangeable V-shaped blocks or the exchangeable flat plates through the lead screw, and the lead screw is installed on the front fixing seat; the exchangeable V-shaped blocks or the exchangeable flat plates are also arranged on the movable tailstock, and the exchangeable V-shaped blocks or the exchangeable flat plates connected with the lead screw are symmetrically arranged. The exchangeable V-shaped blocks are utilized when diagonal lines of a core are shaped, and the exchangeable flat plates are utilized when the straightness of four sides of the core are shaped. When people operate, the shaping of the core can be realized through adjusting the dragging plate, the lifting platform, the movable tailstock, and the like. The invention has the advantages of less labor intensity, high shaping precision, high success ratio and convenience for operation.

Description

technical field [0001] The invention relates to the field of heat exchanger production, in particular to a manual core shaping machine which can be used for shaping the diagonal or four-side straightness of the heat exchanger core and its operating method. Background technique [0002] At present, the core parts of plate-fin heat exchangers are assembled from a variety of aluminum profiles. The cores are large and small, the large ones can reach 1 meter x 2 meters; the small ones are only 0.1 meters x 0.2 meters. These cores all go into the vacuum brazing furnace. It is brazed at a temperature of about 600 degrees. During the brazing process in the furnace body, the core body is deformed irregularly or to varying degrees due to heating and thermal changes. The deformation rate is over 95%, and the deformation of the diagonal line The size is generally around 3-15mm. At the same time, the straightness of the four sides of the core body after brazing will also be deformed to...

AI Technical Summary

Problems solved by technology

For a long time, all heat exchanger manufacturers have adopted the method of beating with wooden or iron hammers, or hitting on a metal platform to shape them. In the case of going over the head and then turning back, there is also the case of using the core's own weight to hit the platform. For example, if the core is a little heavier, due to poor balance, either the adjustment is not in place or one corner of the core is flattened. , and some places will crack, causing the phenomenon of product scrapping often occurs

This old method is not only too labor-intensive for the workers, but also ruins the product

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