Suction control device for screen printer exceeding type web transfer suction wheel
A control device and transcendental technology, applied in transportation and packaging, object supply, pile separation, etc., can solve the problems of difficulty in adjusting the opening and closing time of four sets of suction control devices, inconvenient maintenance and maintenance, and many parts required , to achieve the effect of stable and reliable working performance, simple structure and easy adjustment
Active Publication Date: 2008-09-24
石家庄印钞有限公司 +1
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Problems solved by technology
In practice, it is found that this kind of negative pressure control device generally has the following deficiencies: 1. The structure is complex and many parts are needed; 2. The piston is easy to wear and has a short service life; Accurate and consistent, the adjustment is more cumbersome; 4. Maintenance and maintenance are inconvenient
Method used
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[0016] Referring to Figures 1 to 3, the present invention consists of a rotary gas distribution valve 1 and an end cover 2 fixed thereon. A gas input port 6 is provided in the middle of the end cover, and four gas ports are symmetrically arranged around the gas input port 6. The output port 10, the gas input port and each gas output port are provided with a trachea plug 7. It can be seen from Fig. 2 and Fig. 3 that the two gas output ports located on one side in the axial direction communicate with each other through the gas guide groove 4 provided on the inner wall of the end cover.
[0017] Referring to Fig. 1 and Fig. 2, the composition of the rotary gas distribution valve includes a spool 9 and a valve body 8 which are rotatably matched, and an air inlet 5 is arranged in the middle of the valve body, and there are symmetrically arranged on both sides of the air inlet along the axial direction. Two air distribution holes 3 (also can be one or more). The valve core is provi...
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The invention relates to an air suction control device of an imprinter overrunning type paper transferring air suction wheel, which belongs to the technical field of printing and is used for solving the problem of complex structure and difficulty in adjustment existing in the original control device. The air suction control device comprises an overrunning type paper transferring air suction wheel, a vacuum source, a paper feeding plate and a vacuum negative pressure control mechanism, wherein, the vacuum negative control mechanism is composed of a rotary type gas distributing valve and an end cover fixed on the rotary type gas distributing valve; a gas input port and a gas output port are arranged on the end cover, and the rotary type gas distributing valve is provided with a valve core and a valve body which are matched with each other in rotary way; a gas distributing groove is arranged on the valve core; an air inlet hole and an air distributing hole are arranged on the valve body; the air inlet hole is communicated with the gas input port, the gas output port is communicated with the air distributing hole, and the gas output port is communicated with the overrunning type paper transferring air suction wheel through a gas-guide pipe. The air suction control device has the advantages of simple structure, reasonable design, guarantee of coincidence in air suction control time of air suction wheels, simple and convenient adjustment, convenient care and maintenance, stable and reliable work performance and long service life.
Description
technical field [0001] The invention relates to a printing machine, in particular to a suction control device for an overriding paper transfer suction wheel of a sheet-fed printing machine, which belongs to the technical field of printing equipment. Background technique [0002] At present, for various sheet-fed printing machines that use the transcendence transfer method for paper feeding, the vacuum negative pressure control of the suction wheel generally adopts a control device that realizes vacuum negative pressure by a small piston and a vent hole. The reciprocating motion of the piston in the pressure control device is controlled by a cam mechanism. The device is mainly composed of copper sleeve (cylinder), piston rod, connecting rod, swing rod, roller, control cam and air duct and other components. Its working principle is: a control cam rotates to drive the swing rod to swing, and the swing rod passes through the connecting rod. It is connected with the piston rod, ...
Claims
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Inventor 蒋立林琚金书
Owner 石家庄印钞有限公司
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