Traction roll
A technology of pulling rollers and inner rollers, applied in printing, rotary printing presses, printing presses, etc., can solve the problems of damaging materials, destroying the printing effect of the coated surface, etc., and achieve the effect of expanding the printing range
Inactive Publication Date: 2011-06-08
SHAANXI BEIREN PRINTING MACHINERY
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Problems solved by technology
[0002] At present, in the production process of the printing industry, most of the material film is pulled by pressing the rubber roller and the version roller, and the rotation of the version roller generates traction. In the actual production process, some coating machines often encounter some Printing materials need to be pulled but cannot be pressed by rubber rollers, such as some special materials that are not suitable for pressure or the surface of the material has just been coated, etc. If these materials are pulled by the current rigid-flexible pressure roller , it will destroy the printing effect of the coated surface, or damage the material itself
Method used
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Embodiment Construction
[0010] Below in conjunction with accompanying drawing and specific embodiment, traction roller of the present invention will be further described:
[0011] figure 1 It is a schematic diagram of the structure of the traction roller of the present invention. In the figure, the outer roller 2 is a hollow tubular structure, and the inner roller 1 is installed in the inner hole of the outer roller 2, and the outer roller 2 is fixed on the outer surface of the inner roller 1 through bearings 5 and 7. On the circle, the outer surface of the outer roller 1 is provided with interlaced helical grooves 15 , and a plurality of small holes 13 communicating with the inner wall of the outer roller 2 are arranged on the helical grooves 15 . Both ends of the inner roller 1 are respectively provided with two ring grooves, and sealing rings 3 are installed in the ring grooves. The diameter of the inner roller between the sealing rings 3 is smaller than the diameter of the inner rollers at both...
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The invention discloses a traction roll, which comprises an inner roll and an outer roll, wherein the outer roll is of a hollow tubular structure and fixed on an excircle of the inner roll through a bearing, the outer surface of the outer roll is provided with a helical groove, and a plurality of small holes communicated with the inner wall of the outer roll are arranged in the helical groove; and two ends of the inner roll are provided with sealing rings, two longitudinal sealing strips are arranged between the sealing rings, a ring cavity is formed among the sealing rings, the sealing strips, the inner wall of the outer roll and the outer wall of the inner roll, an inner cavity same with outside is arranged in the middle of the inner roll, and a plurality of through holes are arranged in the inner roll wall arranged between the inner cavity and the ring cavity. The vacuum adsorbing traction roll tows a printing material through negative pressure generated on the surface, therefore, the problem that some materials usually existing on a coating machine need to be towed but cannot be pressed by using a rubber roll is solved.
Description
technical field [0001] The present invention relates to a mechanical device of a printing machine, more particularly to a traction roller on a coating machine. Background technique [0002] At present, in the production process of the printing industry, most of the traction of the material film is the pressing of the rubber roller and the version roller, and the rotation of the version roller generates traction. In the actual production process, some coating machines often encounter some Printing materials need to be pulled but cannot be pressed by rubber rollers, such as some special materials that are not suitable for pressure or the surface of the material has just been coated, etc. If these materials are pulled by the current rigid-flexible pressure roller , it will destroy the printing effect of the coated surface, or damage the material itself. Contents of the invention [0003] In order to solve the above problems in the prior art, the present invention provides a ...
Claims
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IPC IPC(8): B41F13/02
Inventor 党永奇李百刚吴宏
Owner SHAANXI BEIREN PRINTING MACHINERY