Multi-DOF marking unit for marking flexible films in motion

Abstract

The invention discloses a multi-DoF (Degree of Freedom) marking device applicable to the execution of flexible film marking during movement. The multi-DoF marking device comprises a supporting assembly, a transmission assembly, a power assembly, a marking needle assembly and a marking pen assembly, wherein the supporting assembly can be used for realizing the mechanical connection of the marking device and meanwhile further has guiding and location adjusting functions; the power assembly is used for supplying controllable power to the marking device, and the transmission assembly can be suitable for driving the marking needle assembly and the marking pen assembly in a multi-DoF manner during movement and is used for providing high-precision marking operation; the marking needle assembly and the marking pen assembly can be used for respectively forming a needle hole and a color mark in a flexible film and detecting whether marking is successfully completed or not. By the multi-DoF marking device, marking operation can be executed in a high-precision, stable and reliable manner during high-speed movement, and the sensitivity of response is high, so that the multi-DoF marking device is particularly applicable to application occasions, such as RFID (Radio Frequency Identification) tags, with high mark quality.

Description

technical field [0001] The invention belongs to the related field of flexible film quality detection equipment, and more specifically relates to a multi-degree-of-freedom marking device suitable for marking a moving flexible film. Background technique [0002] In the process of producing products with flexible film structures such as printed matter and packaging bags, it is necessary to monitor the products in real time to find defects in the products, and to mark the products where defects are found. If a defective product misses the mark, it will have a great impact on the product qualification rate. Therefore, a marking device that is easy to operate and can mark the defect position of the product with high accuracy is needed. [0003] Traditional marking devices are mainly divided into three types: pneumatic, laser, and electric corrosion. Pneumatic marking machines make high-frequency impact movements for printing needles under the action of compressed air, so as to pri...

AI Technical Summary

Problems solved by technology

However, these types of devices have defects such as single function, low accuracy and high failure rate, which makes it difficult to meet the demand for precise marking on flexible films.

[0004] In particular, for flexible film products such as continuously fed flexible RFID tags, existing marking devices often have problems such as poor stability, low accuracy of position control and speed control in actual tests, especially when When the marking operation needs to be performed during high-speed movement, its response is not sensitive enough, which will cause the mark to be made in different shades and cause drag marks, which will not only affect the appearance of the mark, but also the long pinhole may even damage the RFID. Electrical properties of labels

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