CN2415925Y

CN2415925Y - Pneumatic front stop

Info

Publication number: CN2415925Y
Application number: CN 00203611
Authority: CN
Inventors: 杨永春
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-02
Filing date: 2000-02-02
Publication date: 2001-01-24
Anticipated expiration: 2010-02-02

Abstract

The utility model relates to a downward swing type pneumatic front stop which can be suitable for the high-speed printing of an automatic printer for single paper. The upper part of a front stop body is provided with a miniature cylinder which is formed into integration with the front stop body, and a miniature piston which is directly or indirectly used as a movable paper pressing tongue. When the front stop is used for stopping paper, the paper pressing tongue is extended out of a paper stopping locating surface and is extended into the outer edge of a paper conveying plate. When the front stop is swung downwards to be used for giving the paper, the paper pressing tongue is contracted into the paper stopping locating surface. The expansion and the contraction of the movable paper pressing tongue and the swing of the front stop body are respectively controlled in a pneumatic way. At both sides of paper conveying plate, a screw rod is used for adjusting the front and the back (paper feed directions) positions of a bearing seat of a swinging bearing. The fine adjustment of the front stop can be carried out under the condition of no stop of the printer.

Description

Rule before the following pendulum type pneumatic

The utility model relates to a kind of paper detent mechanism of sheet-fed automatic press, especially rule before the following pendulum type pneumatic of paper prelocalization.

At present, known sheet-fed automatic press all is rule before the mechanical type in order to the preceding rule of paper prelocalization, and mechanically rule must be at toe-out paper tail by the retaining paper that could fall after the preceding rule before the pendulum-type, and this just must reduce the steady paper time, is unfavorable for high speed printing; The machinery paper-pressing tongue of the preceding rule of pendulum-type down is fixed on the preceding rule pressing board, and stretch into defeated cardboard edge one segment distance, the location of paper and allow paper, preceding rule will turn over a bigger angle, so cam lift and pressure angle are big, the impulsive force when vibrations that machine driving causes and paper location is all bigger, the raising of paper prelocalization speed and stability, the prolongation of steady paper time all is subjected to the limitation of mechanical transmission mechanism, is difficult to reach the requirement that the Modern High-Speed automatic press further improves print speed printing speed.

The purpose of this utility model is: be to adapt to the further raising of Modern High-Speed automatic press print speed printing speed, provide a kind of paper-pressing tongue telescopic action, realization simple in structure do not shut down rule before the following pendulum type pneumatic of fine setting.

The purpose of this utility model is achieved in that be a minitype cylinder of one in the setting of the top of front guide body with front guide body, the interior minitype piston of minitype cylinder is set directly or indirectly as movable paper-pressing tongue, balance staff is provided with the tubular shafts that the axle center is an air flue, one air flue is set in front guide body, this air flue one end communicates with minitype cylinder, the other end communicates with the balance staff air flue radial port that suit and screw connect firmly, the other end gas port of balance staff is arranged on the end face of balance staff, and the blast connection on bearing block communicates with the control gas port of rotation pneumatic control valve.Other is provided with a swing arm that connects firmly with the balance staff screw, is connected with the piston of big cylinder by connecting rod, bearing pin, and big piston is under the effect of forced draft, and drive link, swing arm are swung front guide body.When the retaining paper locating surface of front guide body retaining paper, paper-pressing tongue promptly stretches out retaining paper locating surface, puts in defeated cardboard upper edge, when the front guide body bottom during by paper, and paper-pressing tongue retraction retaining paper locating surface.The bearing block bottom surface that the balance staff two ends are set respectively has a cylinder that stretches out downwards, it is in the hole of movable block that this cylinder is inserted into bearing block bottom surface fitting, about the hole one of two movable blocks are the circular holes that match with cylinder, another is horizontal (left and right directions of paper feed) mounting hole, the lower plane of movable block is fitted in the location elongated slot of support base plate, support base plate crossheading is to opening a long waist shaped hole, the homalocephalus lock-screw passes the long waist shaped hole, be connected with the screw in the cylinder that stretches out the bearing block bottom surface, with bearing block, movable block, support base plate three connects firmly, and the both sides of bearing upper plate and defeated cardboard (being the opposite of printing machine operating surface and operating surface) connects firmly.If unscrew the homalocephalus lock-screw, rotate with movable block on the screw rod that is matchedly connected of screw, movable block then moves in the support base plate back of going forward, thereby realizes not shutting down rule before the fine setting.

Owing to adopt such scheme, when the preceding rule bottom is by paper, but movable paper-pressing tongue retraction retaining paper locating surface, before rule pendulum angle little, the vibration of generation is little, and pneumatic speed is fast, when toe-out paper tail does not leave defeated cardboard as yet, keep off the paper location to second paper pre-set time rapidly, effectively increased the steady paper time, created advantage for improving print speed printing speed.The rule fine setting is simple in structure before realizing not shutting down.The utility model is as with the pneumatic paper pulling side gauge of downdraft (I separate case patent application) and surmount the continuous air-breathing roller of paper and cooperate, by one and the synchronous operated rotation pneumatic control valve of impression cylinder, centralized Control and the whole paper locating pneumatic of adjusting mechanism, the structure of rule, side mark before the prior mechanical greatly can be simplified, effect easy and simple to handle is remarkable.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1, Fig. 2, Fig. 3 are respectively the vertical section structural maps of first, second, third embodiment of front guide body of the present utility model.

Fig. 4 is the A-A profile of Fig. 1.Fig. 5, Fig. 6 are respectively B-B, the C-C profiles of Fig. 3.

Fig. 7, Fig. 8 are respectively the profile construction and the structure installation diagrams of the common preceding rule wobble drive mechanism of above-mentioned three embodiment.

Fig. 9 is the structure and the partial sectional view of rule fine setting before the common realization of above-mentioned three embodiment is not shut down.

Among the figure, 1, minitype cylinder; 2, gas hole; 3, minitype piston; 4, retaining paper locating surface; 5, elastic sheet metal; 6, defeated cardboard; 7, screw; 8, balance staff; 9, front guide body; 10, air flue; 11, plug screw; 12, eccentric bushing; 13, spring; 14, gathering sill; 15, guider screw; 16, blast connection; 17, bearing pin; 18, connecting rod; 19, swing arm; 20, big cylinder block; 21, big piston; 22, bearing; 23, bearing block; 24, movable block; 25, homalocephalus lock-screw; 26, screw rod; 27, taper pin; 28, support; 29, dihedral connecting plate.

In first embodiment of front guide body shown in Figure 1, the retaining paper locating surface (4) of front guide body (9) leaves a vertical elongated slot, and a mounting hole is opened in elastic sheet metal (5) bottom, connects firmly with front guide body (9) screw (7) in groove, and top is outstanding to be hidden in the groove.The minitype cylinder (1) on front guide body (9) top and piston rod are over against the back side on elastic sheet metal (5) top.Open 4 or 6 screws in the suitable radial position of balance staff (8), this screw is the air flue radial port of balance staff (8), and wherein two screwhole positions are assembling front guide body position, and all the other screws are the standby holes according to paper size, and the time spent does not shut with plug screw in standby hole.Screw (7) is the fixing position of front guide body (9) on balance staff (8) then.Plug screw (11) is for processing minitype cylinder (1) and assembles minitype piston (3) and establish, when forced draft (air blowing) through balance staff (8) air flue radial port, air flue (10) during to minitype cylinder (1), minitype piston (3) is promoted by air-flow, piston rod end pushing tow elastic metallic (5) top, make elastic sheet metal (5) top stretch out retaining paper locating surface (4), form paper-pressing tongue, at this moment gas hole (2) blows out forced draft toe-out paper tail is blown afloat, and helps paper location and alignment.When air blowing stopped, the elastic force of elastic sheet metal (5) top self homing was shunk back piston rod, in the vertical elongated slot of elastic sheet metal (5) top indentation retaining paper locating surface (4); Unclamp or tighten screw (7), regulate or fixedly elastic sheet metal (5) be the high paper position of paper-pressing tongue, can adapt to the variation of paper thickness.

In the 3rd embodiment of front guide body shown in Figure 3, the minitype piston (3) on front guide body (9) top stretches out the end face of retaining paper locating surface (4) one ends, it is an angled clinoplain of axis with minitype piston (3), minitype piston (3) cylindrical axially has gathering sill (14), guider screw (15) guiding end plays a part not only to lead but also spacing to minitype piston (3), and the extension position decision minitype piston (3) of gathering sill (14) stretches out the length of retaining paper locating surface (4).Be sleeved on the air drain that has the suitable length of perforation on the eccentric bushing (12) between balance staff (8) and the front guide body (9), when negative-pressure air-flow (air-breathing) footpath balance staff (8) air flue radial port, the air drain of eccentric bushing (12), air flue (10) and minitype cylinder (1) are when communicating, minitype piston (3) promptly is inhaled into retaining paper locating surface (4), when air-breathing stopping, minitype piston is subjected to the active force of spring (13) to stretch out retaining paper locating surface (4), at this moment external blast connection (16), be blown into forced draft, forced draft is through gas hole (2), blow afloat toe-out paper tail, give preceding rule retaining paper location, alignment brings benefit.According to the thick book of paper, rotating eccentric sleeve (12) can be regulated the high and low position of front guide body (9), promptly regulates the high and low position of the minitype piston (3) as movable paper-pressing tongue.

In second embodiment of front guide body shown in Figure 2, the basic structure of front guide body (9) is similar to the 3rd embodiment of front guide body, the flexible power source of minitype piston (3) is to adopt negative-pressure air-flow among different is the 3rd embodiment of front guide body (9) shown in Figure 3, and the flexible power source of minitype piston (3) adopts forced draft among second embodiment of front guide body shown in Figure 2, blow, make minitype piston (3) stretch out retaining paper locating surface (4), air blowing stops minitype piston (3) retraction retaining paper locating surface (4), gas hole (2) directly communicates with minitype cylinder (1).

In Fig. 7, above-mentioned three embodiment shown in Figure 8 common preceding rule wobble drive mechanism's sectional structural map and structure installation diagram, big piston (21) in the big cylinder (20), under forced draft (air blowing) effect, reach and the swing arm (19) of balance staff (8) by bearing pin (17), connecting rod (18) with connection, the front guide body (9) that drives suit and connect firmly on balance staff (8) is upwards swung retaining paper, when blowing stops, big piston (21) is under the pulling force of spring (13), big piston (21) returns and resets, front guide body (9) promptly to lower swing by paper.

Above-mentioned three embodiment shown in Figure 9 common do not shut down before in the structure and partial sectional view of rule fine settings; the bottom surface of the bearing block (23) at balance staff (8) two ends respectively has a cylinder that stretches out downwards; and be inserted into bearing block bottom surface fitting be in the hole of movable block (24); the hole of the movable block (24) of swing arm (19) side is the circular hole that matches with cylinder; the hole of another movable block is horizontal (left and right directions that drops) mounting hole; the lower plane of movable block (24) is assemblied in the directed elongated slot of support (28) base plate; support (28) base plate crossheading is to opening a long waist shaped hole; homalocephalus lock-screw (25) passes the long waist shaped hole of support (28) base plate; the cylinder screw that stretches out downwards with bearing block (23) bottom surface is connected; with bearing block (23); movable block (24); support (28) base plate connects firmly and is integral; support (28) upper plate then connects firmly with defeated cardboard both sides; when rule are finely tuned before carrying out in the printing; unscrew homalocephalus lock-screw (25), rotate with the screw of the movable block screw rod (26) that is connected that matches and get final product.Bearing (22) should adopt double row self aligning ball bearings.

Claims

1, rule before a kind of following pendulum type pneumatic of sheet-fed automatic press, it is characterized in that: front guide body top has one to be the minitype cylinder and the direct or indirect minitype piston as movable paper-pressing tongue of one with front guide body, under the air-flow effect, when preceding rule are kept off paper, movable paper-pressing tongue stretches out retaining paper locating surface, put in defeated cardboard upper edge, the preceding rule bottom is during by paper, movable paper-pressing tongue retraction retaining paper locating surface.

2, according to claim 1 advise before the fast following pendulum type pneumatic, it is characterized in that: direct minitype piston as movable paper-pressing tongue, it stretches out the end face of retaining paper locating surface one end, is a clinoplain angled with the minitype piston axis, and the minitype piston cylindrical axially has gathering sill; Be sleeved on eccentric bushing between front guide body and the balance staff and have the air drain of the suitable length of perforation, coincideing with the air flue radial port of air flue in the front guide body and balance staff communicates.

3, rule before the pendulum type pneumatic down according to claim 1, it is characterized in that: retaining paper locating surface has vertical elongated slot, the elastic sheet metal bottom connects firmly with front guide body in groove, top is outstanding to be hidden in the vertical elongated slot, indirectly as the piston rod of the minitype piston of the movable paper-pressing tongue back side over against elastic sheet metal top.

4, rule before the down pendulum type pneumatic according to claim 1 is characterized in that: the swing of front guide body by the big piston in the big cylinder by connecting rod, bearing pin and with balance staff suit and the swing arm driving that connects firmly; Balance staff is a tubular shafts that the axle center is an air flue, and has the air flue radial port in the appropriate location of front guide body retaining paper.

5, rule before the pendulum type pneumatic down according to claim 1, it is characterized in that: the bearing block bottom surface at balance staff two ends respectively has a cylinder that stretches out downwards, be inserted in the hole with bearing block bottom surface fitting, the circular hole that the Kong Yiwei of two fittings and cylinder match, another is horizontal mounting hole, have the long waist shaped hole on the support base plate, support upper plate and defeated cardboard both sides connect firmly.