Plastic profile line-following punching machine

Abstract

The invention relates to a plastic profile line-following punching machine. The plastic line-following punching machine comprises a punching die, a base, a line guide rail which is arranged at the upper end of the base and a sliding block which is fixed at the bottom of the die and is matched with the line guide rail, a die driving device, a travel switch, a speed sensor and a programmable logic controller (PLC) system, wherein the die driving device comprises a servo motor, a screw and a coupler, the travel switch is fixed on the base and controls a moving starting point position and a final position of the die, the speed sensor measures a moving distance of a profile online, and the PLC system controls the servo motor to rotate and reverse, controls the rotating speed of the servo motor and drives an air cylinder to act according to the profile moving speed. The plastic profile line-following punching machine can automatically adjust the punching frequency, moving speed and the like of the punching die, and the plastic profile line-following punching machine has the advantages that the precision of the interval between punching holes or grooves is high, punching efficiency is high, punching stability is good, the waste produced is little and the like.

Description

technical field [0001] The invention relates to a punching machine for plastic profiles and wires. Background technique [0002] A considerable number of plastic profiles, such as door and window profiles, need to be provided with drawstring fixing holes or grooves for installing retractable roller blinds, and wall mounting holes or grooves. Therefore, punching or grooves need to be carried out on the profiles during production. At present, when the plastic profile is punched online with the line punching machine, the punching die is moved together with the profile itself, which is prone to slippage of the punching die, resulting in inconsistent movement of the punching die and the profile; especially when the punching hole diameter is large or In the case of a longer waist-shaped groove, since the punching die also needs to increase in size and weight, it is very easy to produce a situation where the profile cannot drive it to move. In addition, during the return process o...

AI Technical Summary

Problems solved by technology

At present, when the plastic profile is punched online with the line punching machine, the punching die is moved together with the profile itself, which is prone to slippage of the punching die, resulting in inconsistent movement of the punching die and the profile; especially when the punching hole diameter is large or In the case of a longer waist-shaped groove, since the punching die also needs to increase in size and weight, it is very easy to cause the profile to be unable to drive its movement

In addition, during the return process of the punching die, it is bounced back to the starting position by the spring installed at its end. At this time, a large impact will be produced, and it will cause a rebound, which will cause the punching machine to vibrate and make the distance between the punching holes The accuracy is low; when punching for a long time, it will also cause spring fatigue deformation, causing the punching machine to return slowly or cannot return to the starting position

This kind of punching machine also has the disadvantage of difficulty in adjusting the punching distance. It is necessary to adjust the action time of the time relay that controls the cylinder action according to the actual production speed. Due to the size requirements of the product, too much waste is generated; the speed is often unstable when the profile is produced online, and the time relay will not automatically adjust the interval time of each punching, which will cause a large error, punching or slotting Generally, the accuracy can only be guaranteed at 5mm / m, or even greater

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