Horizontal bending machine

Abstract

A horizontal bending machine comprises a machine body, a controller, a bending mechanism and a follower plate, the bending mechanism is horizontally arranged on the machine body, and the follower plate is arranged in the workpiece feeding direction of the bending mechanism. When bending is conducted, the controller controls a workpiece to be fed on the follower plate, the workpiece is limited through the follower plate and the bending mechanism and bent through the bending mechanism, and the follower plate and the bending mechanism synchronously act. In this way, the bending precision can be improved, a bending mold can independently rotate and be convenient to reset, and the workpiece can be bent multiple times conveniently. The complete workpiece bending process is fully automatic, so that the production efficiency of the bending machine is improved, and the labor intensity is reduced. Meanwhile, the product quality and stability can be improved. When material pressing is conducted, the horizontal bending machine can be suitable for clamping heat exchangers which are different in layer thickness and layer number and is high in adaptability. Synchronous action of the bending mechanism and the follower plate in the bending process can be achieved, friction of the workpiece in the bending process can be reduced, and the workpiece quality can be improved. Layered bending can be conducted on the workpiece, a needed bending moment is small, the relative pressure between heat exchanger pieces and the bending mold and the relative pressure between layers of the heat exchanger pieces are small, and the heat exchanger pieces are not prone to rewinding.

Description

technical field [0001] The invention relates to a bending machine, in particular to a bending machine capable of adopting layered bending in 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 inc...

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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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