Feeding mechanism of heat exchanger bending machine and bending machine applying feeding mechanism

Abstract

The invention discloses a feeding mechanism of a heat exchanger bending machine and the bending machine applying the feeding mechanism. The feeding mechanism comprises a feeding rack, wherein a conveying unit is arranged on the feeding rack, and comprises a conveying assembly and a carrying assembly; the conveying assembly is used for bearing and conveying workpieces; the carrying assembly is located on one side of the conveying assembly and used for bearing a workpiece to be bent on the conveying assembly and carrying the workpiece to a bending station or taking out the bent workpiece from the bending station and carrying the bent workpiece onto the conveying assembly; and the feeding mechanism can achieve feeding conveying of the workpiece to be bent and taking-out conveying of the bentworkpiece, so that the workpiece can be carried without other carrying devices after being bent, the whole mechanism of the bending machine is more compact, the occupied space of the bending machine is reduced, the feeding mode is simple and convenient, friction force borne by the workpiece in the conveying process is reduced, surface scratches are reduced, the bent workpiece is ensured to be evenly stressed in the conveying process, and the yield is increased.

Description

Technical field [0001] The present invention belongs to the field of heat exchanger bending machine, and more particularly to a feeding mechanism of a heat exchanger bending machine and a bending machine to which it is applied. Background technique [0002] Tielding heat exchanger serves a wide range of applications in the refrigeration industry as a compact heat exchanger. The forming process of the heat exchanger mainly has the following three forming processes: tube bending forming (forming a U-tube), mechanical transflation tube forming (realizing tube-mold connection), tube bundle bending formation (formation of a G-type heat exchanger ). The tube bundle is one of the key processes of the heat exchanger forming, which has an important impact on the performance of the heat exchanger. [0003] When the tube bundle is formed, the heat exchanger is first delivered to a predetermined position, so that the portion you want to be curved is close to the bending mode (roller) having ...

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Problems solved by technology

[0004] In the traditional tube bundle bending forming process, most of the heat exchangers to be bent are manually transported to the bending die in the main machine of the bending machine through the input end of the main machine of the bending machine, and then bent and formed. The work efficiency of the method is low and the labor intensity is high

[0005] In order to solve the above problems, the applicant has created a related feeding mechanism before. For details, please refer to the announcement number CN 104690182 B. The patent name is an invention patent for a feeding component of a bending machine. The technical solution is disclosed The feeding component of the bending machine carries the workpiece to be bent (such as a heat exchanger to be bent) on the loading platform and is pushed by the material shifting mechanism to realize automatic transportation, which can reduce labor intensity and improve work efficiency. Efficiency; and the feeding platform is driven up or down by the feeding lifting mechanism to adjust the height of the feeding platform, so that the feeding platform can be accurately docked with the main machine of the external bending machine, so that the feeding component is connected to the main machine of the external bending machine The entire process of conveying the workpiece to be bent and receiving the material from the main machine of the external bending machine is carried out stably and smoothly, which solves the problem that the loading platform cannot be accurately docked with the main machine of the external bending machine due to the existence of various errors such as assembly errors ; In addition, the material loading platform can still normally push the workpieces to be bent under different height positions by using the independent material shifting mechanism and feeding and conveying components, but this structure uses the pushing method to push the workpieces to be bent Entering into the main machine of the bending machine, during the pushing process of the workpiece to be bent, friction occurs between the workpiece to be bent and the loading platform, so that there is a certain friction force between the workpiece to be bent and the loading platform. When pushing, The surface of the workpiece to be bent will be rubbed by the surface of the feeding platform, which will easily cause scratches on the surface of the workpiece to be bent and affect the appearance of the product; in addition, due to the push feeding method, the workpiece to be bent is being pushed Guidance on the path is particularly important. Therefore, this solution has two guide rods on the loading platform to guide the workpiece to be bent, but this structure has the following disadvantages:

[0006] 1) If the distance between the two guide rods is equal to the width of the workpiece to be bent, this will increase the difficulty of feeding the workpiece to be bent, and considering the errors generated during the manufacturing process of the workpiece to be bent, it may lead to The bending workpiece cannot enter the feeding assembly, which makes feeding inconvenient;

[0007] 2) If the distance between the two guide rods is greater than the width of the workpiece to be bent, during the pushing process of the workpiece to be bent, the workpiece may be inclined due to uneven force, causing it to enter the bending state in a skewed state. The main machine of the bending machine will easily affect the yield rate of the workpiece to be bent; if it is serious, the workpiece to be bent may be stuck between the two guide rods and damage the feeding assembly

[0008] In addition, when the above-mentioned feeding assembly is in use, it can only realize one-way feeding, that is, it can only transport the workpiece to be bent to the bending station. The bent workpiece is taken out, which will increase the space occupied by the bending machine. If the space of the bending machine is limited, the feasibility of the bending machine using this feeding component is low, and it cannot meet the needs of the bending machine. space requirements

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