Multi-line cutting device

Abstract

The invention discloses a multi-line cutting device. The multi-line cutting device comprises a workbench; a mounting plate is arranged on the workbench; a rolling wheel assembly is arranged on the mounting plate; the rolling wheel assembly comprises a pay-off roller, a take-up roller, two cutting rollers and a lifting assembly for driving the two cutting rollers to move up and down; multiple groups of cutting lines are wound on the pay-off roller, the two cutting rollers and the take-up roller to form a cutting line net; a workpiece clamping device is further arranged on the workbench; an encoder is arranged on the mounting plate; a brake is arranged on the cutting roller near one side of the pay-off roller; the multi-line cutting device also comprises a controller; and the controller is connected with the encoder and the brake separately. The multi-line cutting device detects the rotating speed values of the cutting rollers through the encoder; and when the rotating speed values of the two cutting rollers are unequal, the controller controls the brake to start to perform speed reduction on the cutting rollers, so that bending deformation of the cutting line between the two cuttingrollers is avoided.

Description

technical field [0001] The invention relates to the technical field of wire cutting, in particular to a multi-wire cutting device. Background technique [0002] Such as figure 1 As shown, when the cutting wire of the multi-wire cutting device cuts the workpiece to be processed, since not all the cutting wires in the cutting area are in contact with the workpiece, the part of the cutting wire that is in contact with the workpiece will be subject to the reaction force generated by the workpiece on the cutting wire, so that The cutting line of this part is bent upwards, and the cutting line in the cutting area forms an arc curve; in order to eliminate the influence of the arc cutting line on the integrity of the cutting surface of the workpiece, to ensure that the bottom of the workpiece is completely cut after the cutting is completed, now Some multi-wire cutting devices usually increase the downward movement distance of the cutting guide assembly, but it also prolongs the cu...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, when the cutting wire of the multi-wire cutting device cuts the workpiece to be processed, since not all the cutting wires in the cutting area are in contact with the workpiece, the part of the cutting wire that is in contact with the workpiece will be subject to the reaction force generated by the workpiece on the cutting wire, so that The cutting line of this part is bent upwards, and the cutting line in the cutting area forms an arc curve; in order to eliminate the influence of the arc cutting line on the integrity of the cutting surface of the workpiece, to ensure that the bottom of the workpiece is completely cut after the cutting is completed, now Some multi-wire cutting devices usually increase the distance that the cutting guide assembly moves downward, but it also prolongs the cutting time and reduces production efficiency

[0003] Chinese patent CN103909585B discloses a multi-wire cutting machine that can eliminate the influence of the arc shape of the cutting line. It is characterized in that a horizontal feed mechanism is provided between the lifting body and the worktable, and the horizontal feed mechanism drives the workpiece during the cutting process. The moving direction of the cutting line is reciprocatingly fed, and the position of the lowest point and the highest point of the cutting line in contact with the workpiece is changed in time. In each reciprocating cycle of the cutting line, each cutting point is basically at the same horizontal position, thus shortening the total cutting time. , which improves the production efficiency; however, this method will greatly increase the wear of the cutting line, especially when the workpiece and the cutting line move in opposite directions, it is easy to cause the cutting line to be continuously rubbed and broken

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