Bending tool bit assembly and bending machine

Abstract

The invention discloses a bending tool bit assembly and a bending machine, the bending tool bit assembly is mounted on a base and driven by a driving mechanism to reciprocate on the base, and the bending tool bit assembly comprises a movable seat and a tool bit which are connected to the power output end of the driving mechanism; the tool bit is installed on the movable base and is in pivot fit with the movable base. The tool bit is provided with an extrusion part used for extruding the metal plate so that the metal plate can be bent. An ejector block is movably mounted on the movable seat, a pressed surface is formed on one side of the ejector block, a pushing part matched with the tool bit is formed on the other side of the ejector block, and the pressed surface is used for being extruded by the base when the movable seat moves so that the pushing part can push the tool bit to rotate relative to the movable seat. The bending angle of a plate can meet the requirement through one-time bending action, the tool bit rotates automatically during linear motion, a driving device does not need to be additionally arranged for rotation of the tool bit, the structure is simplified, and the bending efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of sheet metal processing, in particular to a bending cutter head assembly, and also to a bending machine with the bending cutter head assembly. Background technique [0002] During the processing of sheet metal, it is usually necessary to use a bending device to bend the sheet metal. The existing bending device usually uses the bending head to move downwards and press the sheet metal on the lower die, so that The metal sheet is bent under pressure, because the metal sheet has a certain amount of rebound after being pressed by the cutter head. The bending angle finally makes the bending angle of the metal sheet reach 90°. The adjustment process is cumbersome, and different cutter heads and lower molds are required to achieve 90° bending of the metal sheet, resulting in lower bending efficiency of the metal sheet. Low, and need to use multiple sets of cutter heads and dies, resulting in higher equipment cost...

AI Technical Summary

Problems solved by technology

[0002] During the processing of sheet metal, it is usually necessary to use a bending device to bend the sheet metal. The existing bending device usually uses the bending head to move downwards and press the sheet metal on the lower die, so that The metal sheet is bent under pressure, because the metal sheet has a certain amount of rebound after being pressed by the cutter head. The bending angle finally makes the bending angle of the metal sheet reach 90°. The adjustment process is cumbersome, and different cutter heads and lower molds are required to achieve 90° bending of the metal sheet, resulting in lower bending efficiency of the metal sheet. Low, and need to use multiple sets of cutter heads and dies, resulting in higher equipment costs

[0003] The patent document with the application number 202110041105.1 discloses a bending machine. Only by driving the cutter head to rotate through the third drive unit can the 90° bending of the metal sheet be realized. Since the cutter head is driven by a motor to rotate, the two cutter heads The torque at the end is large, and the torque at the middle is small. During the bending process, it is easy to cause uneven stress on the metal sheet, resulting in uneven or inclined bending parts, resulting in unqualified workpieces; moreover, multiple drive units are required, which is costly and complex in structure.

[0004] The patent document with the application number of 202010581957.5 discloses a bending machine. The reversing of the cutter head is through the guide mechanism to realize the upward movement of the cutter head and the translation relative to the workpiece. However, the machining accuracy of this structure is very high. When the head is reversed, there may be unqualified workpieces due to the uneven force of the metal sheet during the bending process due to the fit gap, resulting in uneven or inclined bending parts. The structure of the guide structure is complicated, the processing is difficult, and the cost is high.

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