Laser perforating device with wide scanning focus

Abstract

The invention discloses a laser perforating device with wide scanning focus. The laser perforating device includes a floating rotation conveying device and a laser perforating device body; the floating rotation conveying device includes a rotating disc rotating axially, and a plurality of rotating negative pressure sucking grooves are formed in the circumference of the rotating disc; the laser perforating device body includes a rotating prism, arc-shaped cylindrical lenses and a plurality of reflectors, the rotating prism is arranged at the end of the rotating disc and is coaxially arranged with the rotating disc; the arc-shaped cylindrical lenses are arranged on the outer ring of the rotating disc in the circumferential direction of the rotating disc; and pulse laser received by the rotating prism is transmitted to the arc-shaped cylindrical lenses through the reflectors, focuses on filter tips of cigarettes adsorbed by the negative pressure sucking grooves, and circumferential perforating is completed along with the rotation of the negative pressure sucking grooves. According to the laser perforating device, the defect that traditional laser perforating can only focus on the plane is overcome, laser is scanning and perforating while the cigarettes rotate, and the cigarettes are always perforated on the focal plane without damage. The perforating accuracy is high, the moldingeffect is good, the distance is uniform, the size is consistent, the operation is convenient, the adjustment is easy, and the practicability and wide applicability are high.

Description

technical field [0001] The invention relates to a laser drilling device, in particular to a wide-range scanning focusing laser drilling device, which belongs to the technical field of cigarette equipment applications. Background technique [0002] Laser has the characteristics of high brightness, high monochromaticity, high coherence and good directionality. [0003] The principle of laser drilling means that the laser is irradiated on the material after being focused, so that the temperature of the material rises rapidly to melt or vaporize. With the relative movement between the laser and the material to be processed, circular holes or linear holes are formed on the material to be processed. The purpose of punching. [0004] The use of laser drilling on cigarettes can reduce the damage of tar to the body. The conventional method is to carry out laser drilling on the filter tip of the cigarette, and the cigarette is volleyed and punched by the pulsed laser emitted by the ...

AI Technical Summary

Problems solved by technology

[0006] 1. Double-length thin rods are supported on the surface of the drum and run along the surface. The two laser beams can only punch holes at five fixed points, and the number of holes can not be adjusted, which limits the flexibility of on-site application;

[0007] 2. Symmetrically rotating double suction nozzles, the thin rods on the drum are handed over to the rotating suction nozzles, which are independent of the drum, but the rotation speed of the suction nozzles is high, which affects the stability of the transfer;

[0008] 3. Multiple laser drilling devices are evenly distributed in the range where the cigarette can complete the rotation of at least 360 degrees, but because the number of drilling devices is fixed and the installation position is fixed, only a certain number of holes can be punched on the cigarette filter , the quantity cannot be adjusted according to the on-site demand, and the application prospect is limited;

[0009] 4. Rotate the cigarette by rubbing the cigarette wheel to realize the rotation of the cigarette. The laser emits pulses at fixed points to complete the punching on the surface of the cigarette when it rotates a circle. This method of mechanical rubbing makes the cigarette rotate by itself. Some damage is caused to the support surface, and the speed is limited, which limits the production efficiency

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