CN2701628Y - Printing plate roller - Google Patents

Abstract

The utility model relates to a lithography apparatus technical field refers in particular to a galley roller with alternate form. The technical scheme is as follows: this galley roller includes a cylinder shape space of a whole page, and circumferential surface processing in the space of a whole page has the printing plate pattern, installs an inflatable shaft in the space of a whole page, and this inflatable shaft includes a axis body that has the cavity pipeline and wraps up in the gum cover outside the axis body, and the inlet port has been seted up to the axis body, and the both ends of gum cover are cramped on the axis body through the fastener, are located the surface of axis body between two fasteners and seted up the through-hole that communicates with the inside cavity pipeline of axis body. After the structure is adopted, the inflatable shaft of the printing plate roller is used as the shaft core of the plate roller, and the working principle is as follows: before the inflatable shaft is inflated, the layout is sleeved on the inflatable shaft, then the inflatable shaft is inflated to expand the rubber sleeve on the surface of the inflatable shaft, so that the rubber sleeve is tightly stretched in the hollow tube of the layout, and the inflatable shaft and the layout are combined into a whole to form a printing plate roller capable of printing.

Description

a printing plate roller

Technical field:

The utility model relates to the technical field of printing equipment, in particular to a replaceable printing plate roller.

Background technique:

Traditional printing plate rolls include gravure printing and letterpress printing, which have the characteristics of multi-color continuous printing. The printing plate roll is usually made of a seamless steel tube after surface treatment. Although it has the advantage of good printing effect, it has an important problem that the cost of plate making is too high. Since the entire printing plate roll is a whole, whenever a printing pattern variety is replaced, the entire printing plate roll needs to be updated, which increases the production cost, especially for some small batches and multi-variety production. Different kinds of printing plate rollers not only greatly increase the cost, but also need to process corresponding printing plate rollers for different varieties, so the whole production cycle is prolonged.

On the other hand, in the textile printing and dyeing industry, the inflatable shaft is often used as the take-up device. It is generally rotatably installed on the machine equipment, through the expansion of the compressed air inside, the air expansion shaft is tightened in a roll barrel, and the roll barrel is fixed by the air expansion shaft. Commonly used drums include paper materials, plastic materials and metal materials, all of which can use the inflatable shaft to achieve the purpose of coil delivery.

Invention content:

The purpose of the utility model is to apply the air expansion shaft to the printing plate roller, and provide a replaceable printing plate roller.

The utility model is realized through the following technical scheme: the printing plate roller includes a cylinder-shaped layout, a printing plate pattern is processed on the circumferential surface of the layout, and an air-expanding shaft is installed in the layout, and the air-expanding shaft includes a hollow pipe The shaft body and the rubber sleeve wrapped around the shaft body, the shaft body is provided with an air inlet, the two ends of the rubber sleeve are tightened on the shaft body by fasteners, and the surface of the shaft body between the two fasteners is opened There is a through hole communicating with the hollow pipe inside the shaft body.

After adopting this structure, the printing plate roller uses the air-expanding shaft as the shaft core of the printing plate roller. Its working principle is: before the air-expanding shaft is inflated, the layout is set on the The rubber sleeve on the surface of the inflatable shaft expands to tighten it in the hollow tube of the plate, combining the inflatable shaft and the plate as a whole to form a printing plate roller that can be printed.

Description of drawings:

Fig. 1 is the perspective view of the utility model embodiment one;

Fig. 2 is a schematic cross-sectional view of Embodiment 1 of the utility model;

Fig. 3 is the perspective view of the second embodiment of the utility model;

Fig. 4 is a schematic cross-sectional view of Embodiment 2 of the utility model.

Detailed ways:

See accompanying drawing 1,2, this is a preferred embodiment of the present utility model, and it comprises: a cylinder-shaped layout 1, is processed with printing plate pattern 11 in the circumferential surface of layout 1, and pattern 11 can be letterpress or gravure. An air expansion shaft 2 is installed in the layout 1 . The inflatable shaft 2 includes a shaft body 21 with a hollow pipe 20 and a rubber sleeve 27 wrapped outside the shaft body 21. The shaft body 21 is provided with an air inlet 26, and the two ends of the rubber sleeve 27 are tightened by fasteners 271. On the shaft body 21 , a through hole 22 communicating with the internal hollow pipe 20 is defined on the surface of the shaft body 21 between the two fasteners 271 . The two ends of the shaft body 21 are formed with a central shaft 25 for transmission of the entire shaft body 21 , and the air inlet 26 can be opened on the central shaft 25 .

When in use, first, set the layout 1 outside the rubber sleeve 27 of the inflatable shaft 2 before inflating the inflatable shaft 2, and then inflate the shaft body 21 of the inflatable shaft 2 through the air inlet 26, and the gas passes through the shaft body 21. The hollow pipe 20 and the through hole 22 enter between the rubber sleeve 27 and the shaft body 21, so that the rubber sleeve 27 is inflated, so that the entire inflatable shaft 2 is tightened in the hollow tube of the layout 1, so that the inflatable shaft 2 and the layout 1 are Combined to form a printing plate roll that can be printed on. Otherwise, the air inlet 26 is opened to release the gas in the rubber sleeve 27, and the expansion force acting on the layout 1 disappears, and the operator can easily take the layout 1 out of the inflatable shaft 2. It can be seen from the above that after the utility model is adopted, one (or more) printing equipment only needs to be equipped with a set of inflatable shafts 2 with different outer diameters. When the printing product needs to be replaced, it is only necessary to reprocess a new layout 1 and fit it on the suitable inflatable shaft 2, which not only greatly reduces the cost of making printing plate rollers, but also greatly reduces the production cycle. shortened, greatly improving production efficiency.

See Figures 3 and 4, which is another embodiment of the present invention, which also includes a drum-shaped layout 1 and an inflatable shaft 2A. The layout 1 is also a hollow cylinder, the peripheral surface of which is processed with a printing plate pattern 11 , and the inflatable shaft 2 is assembled in the hollow pipe of the layout 1 . In this embodiment, the inflatable shaft 2A includes a shaft body 21 with a hollow pipe 20, a support plate 23, and an air bag 24 located in the hollow pipe 20 of the shaft body 21. The utility model pushes the support member 23 through the expansion or contraction of the air bag . An air inlet 26 communicating with the air pressure device 24 is opened on the shaft body 21 . Through-holes 22 communicating with the pipeline 20 are evenly formed on the circumference of the shaft body 2 , and a support member 23 passes through each through-hole 22 . The support member 23 on the inflatable shaft 2 is composed of an inner support plate 231, a support plate 233 outside the connecting rod 232; wherein the inner support plate 231 is located in the shaft body 21, and the outer support plate 233 is located outside the shaft body 21, and has the same The curvature of the roller-shaped layout 1 is favorable to keep the expandable support of the layout in an ideal circular shape, and makes the layout 1 less likely to be deformed. The inner and outer support plates 231 and 233 are connected by a connecting rod 232 , that is, the connecting rod 232 passes through the through hole 22 to securely connect the inner and outer support plates 231 and 233 .

When the present embodiment is working: first, the layout 1 is sleeved on the shaft body 21 of the inflatable shaft 2 before the air bag 24 of the inflatable shaft 2 is inflated, and then the air bag 24 is inflated through the air inlet 26 . When the airbag 24 is inflated, the airbag 24 will squeeze the inner support plate 231 to move toward the outer support plate 233, and press the outer surface of the outer support plate 233 with the same radian as the layout 1 against the inner wall of the layout 1, so that the support The plate 23 is stretched tightly in the hollow pipe 20 of the layout 1, and the air expansion shaft 2 is integrated with the layout 1 to form a printing plate roll that can be printed.

The above-described embodiments are only preferred examples of the utility model, and are not intended to limit the scope of implementation of the utility model, so all actions according to the shape, structure, characteristics and spiritual principles described in the scope of the utility model patent application Changes or modifications should be included in the patent scope of the utility model.

Claims (1)

1. A printing plate roller, comprising: a drum-shaped layout (1), with a printing plate pattern (11) processed on the circumferential surface of the layout (1), characterized in that: an air expansion shaft is installed in the layout (1) (2), the inflatable shaft (2) includes a shaft body (21) with a hollow pipe (20) and a rubber sleeve (27) wrapped outside the shaft body (21), and the shaft body (21) is provided with an air inlet hole (26), the two ends of the rubber sleeve (27) are fastened on the shaft body (21) by fasteners (271), and a hole is opened on the surface of the shaft body (21) between the two fasteners (271). There is a through hole (22) communicating with the internal hollow pipe (20).

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