Automatic replacing mechanism for rubber heads of pad printing machine

Abstract

The invention discloses an automatic replacing mechanism for rubber heads of a pad printing machine. The automatic replacing mechanism comprises a rubber head storage assembly, a rubber head assemblyand a printing head assembly. The rubber head storage assembly comprises a rubber head storage base plate and supporting plates. The rubber head assembly comprises rubber head transition plates, rubber head bottom plates and rubber heads. The printing head assembly comprises rotatable hollow rubber head mounting shafts arranged on the rubber head bottom plates, rubber head sucking discs, rotatingair pipe joints and zero-point positioning devices. In this way, as for the automatic replacing mechanism for the rubber heads of the pad printing machine, the rubber heads are fixed in a vacuum absorption mode, so that the action of replacing the rubber heads is simple and fast, and all the rubber heads are stored in a rubber head storage through the transition plates with the uniform size; a two-dimensional code for identifying the models of the rubber heads is carved in each transition plate, so that the various rubber heads have interchangeability; and the advantages of simple structure, high reliability, accurate positioning, high efficiency, low cost and the like are achieved.

Description

technical field [0001] The invention relates to the field of surface printing and decoration, in particular to an automatic rubber head replacement mechanism for a pad printing machine. Background technique [0002] In the surface printing and decoration industry, the pattern printing on a large number of soft material surfaces and uneven surfaces must adopt the pad printing process due to the surface shape, and the printing of high-definition patterns and precise color registration patterns can only meet the requirements of the pad printing process. The surface pad printing process covers almost most of the industrial and civil products; with the continuous improvement of product quality requirements, more and more types of products need to be surface pad printed, but the current degree of automation of the equipment in the pad printing industry is very low, almost All are semi-automatic single-station production models, which are difficult to adapt to the current market de...

AI Technical Summary

Problems solved by technology

[0002] In the surface printing and decoration industry, the pattern printing on a large number of soft material surfaces and uneven surfaces must adopt the pad printing process due to the surface shape, and the printing of high-definition patterns and precise color registration patterns can only meet the requirements of the pad printing process. The surface pad printing process covers almost most of the industrial and civil products; with the continuous improvement of product quality requirements, more and more types of products need to be surface pad printed, but the current degree of automation of the equipment in the pad printing industry is very low, almost All are semi-automatic single-station production models, which are difficult to adapt to the current market demand for small batches and multiple varieties. The automation level of pad printing machines needs to be improved urgently.

[0003] In order to meet some high-precision and difficult pad printing needs, some equipment manufacturers have developed some pad printing machines with a higher degree of automation, such as using servo electric cylinders instead of cylinders to drive the rubber head, using manipulators instead of manual loading and unloading, and even increasing The visual camera improves the positioning accuracy of the product; however, these improvements are only from the aspects of improving the speed and accuracy of the movement and appropriately reducing the amount of manual handling. The ink supply method still adopts the traditional pattern of a pattern template with an oil cup. The pattern uses different rubber heads. If you need a variety of color patterns, you need to prepare several sets of oil cups and templates. It is still manual disassembly and replacement. At the same time, you need to replace the corresponding rubber heads, and then re-adjust the machine. The efficiency is low and it cannot be realized. true automation

[0004] In the current industry, the rubber head is rigidly connected and fixed on the Z-axis module of the printing head, and cannot be rotated. When the printing pattern angle needs to be changed, the product fixture or pattern template can only be remade, and the machine must be re-adjusted after replacement. High cost and low efficiency

[0005] The silicone head, pattern template and oil cup in the pad printing machine are the key components of the equipment, which directly determine the printing quality, but they are also consumables, and the replacement frequency is very high. The automatic replacement scheme of the pattern template and oil cup has been completed by the manufacturer. At present, there is no fixed standard for the size of the silicone head, and the installation method is complicated. Although some manufacturers use magnets and positioning columns to fix the rubber head, the disassembly still needs to be done manually with the help of tools. Automatic replacement of the rubber head has become the last A major industry problem that hinders the automation of pad printing machines; solving the automatic replacement of rubber heads and realizing automatic and fast switching of various rubber heads is the key to truly realizing the automation of pad printing machines

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