Horizontal bending machine

Abstract

The invention relates to a horizontal bending machine which comprises a machine body, a controller, a bending mechanism and a follower plate. The bending mechanism is horizontally arranged on the machine body. The follower plate is arranged in a workpiece feeding direction of the bending mechanism. In time of bending, the controller controls a workpiece to moving into the follower plate and the position of the workpiece is limited by the follower plate and the bending mechanism. The bending mechanism bends the workpiece and acts synchronously with the follower plate. The bending precision is improved, a bending die can rotate independently so that restoring is convenient and multiple bending of the workpiece is facilitated. A whole bending process of the workpiece is fully automatic so that the production efficiency of the bending machine is improved, labor intensity of operators is relived and at the same time, quality and stability of products can be improved. In time of material pressing, the bending machine can be suitable for clamping heat exchangers with different layer thickness and layer numbers so that application range is wide. Synchronous action of the bending mechanism and the follower plate in time of bending can be achieved, friction when the workpiece is bent is reduced and quality of the workpiece is improved. The workpiece can be bended in a delamination mode, required bending moment is little, relative pressure among heat exchanger fins and the bending die and among layers of the heat exchanger is small and the heat exchanger fins are not prone to fall.

Description

technical field [0001] The invention relates to a bending machine, in particular to a bending machine capable of adopting layered bending for a multilayer heat exchanger. Background technique [0002] The bending machine is used to bend the heat exchanger into G shape, U shape or L shape, and is the key equipment for heat exchanger forming. [0003] The heat exchanger is conventionally bent and then assembled in a single layer. In order to improve production efficiency, a multi-layer heat exchanger is used for one-time bending. However, the multi-layer heat exchanger is bent at the same time, and the bending moment required is large. The maximum, the relative pressure between the heat exchanger and the bending die, and the heat exchanger layer and layer is also the largest, so the phenomenon of "rewinding" is most likely to occur at the initial stage of bending. [0004] With the increasing demand for large central air conditioners, the size of the heat exchanger is also in...

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Problems solved by technology

[0003] The heat exchanger is conventionally bent and then assembled in a single layer. In order to improve production efficiency, a multi-layer heat exchanger is used for one-time bending. However, the multi-layer heat exchanger is bent at the same time, and the bending moment required is large. The largest, the relative pressure between the heat exchanger and the bending die, and between the layers of the heat exchanger is also the largest, so the phenomenon of "rewinding" is most likely to occur at the initial stage of bending

[0004] With the increasing demand for large central air conditioners, the size of the heat exchanger is also increasing, and the weight is also increasing. According to the traditional process, the workpiece of the heat exchanger is manually lifted onto the workbench, and after bending Then lift the heat exchanger down. For large workpieces, sometimes multiple people are required to put the workpiece in and take it out. The operation is difficult, time-consuming and labor-intensive, and the degree of automation is low.

At the same time, the heat exchanger needs to be bent multiple times, which cannot be done automatically

[0005] The existing heat exchanger workpiece bending process is to place it horizontally on the worktable for bending, and the feeding device releases the workpiece during bending, and then clamps the workpiece to feed after a bending is completed, and then Carrying out the second bending, it takes a certain amount of time to clamp and then loosen, resulting in a longer working cycle, which affects the bending efficiency, especially on workpieces with a large number of bending times.

Moreover, there are many types of heat exchanger workpieces, and the existing bending mechanism cannot adapt to this situation

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