| 摘要 |
Invention herewith described refers to the bending of pvc profiles using the laser and PLC control system and belongs to the field of PVC arched joinery, where the bending of PVC profiles is fully automated thus eliminating any possible human error occurring as a result of a manual control of the machine. The PLC control system consists of an encoder with the wheel X (4), and the encoder Y (6) that send to the PLC device (42) information about the rotational speed of the engines X (4.1) and Y (6.1), where the rotational speed of the engine X is controlled solely through the frequency regulator (41) which is with a two-way connection as well as the terminal (7) connected to the PLC device. The laser system is placed in a plastic box (3) together with the laser emitter (3.1) whose light through the mirror (14) glued to the profile (10) returns to the photodiodes (3.2) connected with the PLC device that continuously corrects the errors in the middle of the profile resulting from the skipping of the encoder with wheel which during the bending loses measurement accuracy of the profile length.
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