专利摘要:
1. SHEET ROTARY PRINTING MACHINE, which includes an inclined invoice table, an overhead drum, a lower-position forwarder for transferring sheets from an overlay table to the overlays of the overhead cylinder, one or more printing sections, and a leaflet device, characterized in that the overhead drum 5 is located above the plane working surface of the overhead table 7.
公开号:SU1142397A1
申请号:SU807771093
申请日:1980-02-28
公开日:1985-02-28
发明作者:Вейсбах Гюнтер;Луциус Гюнтер;Плагс Дитер
申请人:Феб Полиграф Лейпциг (Инопредприятие);
IPC主号:
专利说明:

2, the machine according to claim 1, wherein the forgo rider 6 includes a driving link 11 with a three-arm lever 13 hinged on it, carrying a sponge 13.2 of the grippers.
3. Machine on PP. 1 and 2, which is supported by the fact that the supporting sponge of the grippers is fixed on the middle shoulder of the three-arm lever 13.
4. The machine according to PP, 1-3, about t and h and ya with the fact that on the third 13; 3 shoulder three-arm lever reinforced roller 19 for engagement with the drive cam 23.
5, Machine on PP. 1 and 4, that is, that the drive train 23 is mounted on the frame of the car.
42397
6. The machine according to claim, 1, distinguished by the fact that the leading link 11
associated with a cam mechanism consisting of a cam 28, a roller 29, a roller bearing lever 30 and a connecting rod 31.
7. Machine according to paragraphs. 1-6, characterized in that the movable jaw 15 is fixed on the shaft 14 and rigidly connected with the roller lever 16 and fixed on the first 1 3.1 shoulder of the three-armed lever 13.
8. Machine on PP. 1-7, characterized in that a roller 17 is arranged on the roller lever 1b to interact with the driving cam 22 of the grippers mounted on the machine frame.
This invention relates to a sheet-fed rotary printing press with a bottom-mounted photo grader. Sheet rotary printing machine consists of one or more printing units, in front of the first of which is located on a storage table. The sheet is taken by the forwarder from the overlay table, accelerated to the speed of the machine, and transmitted to a rotating cylinder (overhead drum). A known printing machine (GDR patent No. 122,239, cl. 65 H 5/10, 1976), in which sheets are taken from the overlay table. working from the bottom, shuffling 1ms for the freighter and are transferred to the holders of the overhead drum. In the printing press, the application table and the application drum are positioned so that the plane of the application table crosses the surface of the application drum. With this arrangement of the overlay table, the sheet is fed onto the overlay drum along a highly curved circular path. Since the front stops can turn back to the overlay line on the overhead table only when the leading edge of the outgoing sheet crosses the path of the front stops below the plane of the overlay table, this arrangement has a negative effect on the backward reversal of the front stops, which limits the cycle time for alphanumeric sheets. Short-term alignment leads to inaccuracies in typing, and also adversely affects the quality of sheet processing, especially at high machine speeds. In addition, with a highly curved circular path, not all types of printing materials can be processed (some types of printing materials can be processed only at low speeds of the machine). The purpose of the invention is to create a sheet-fed rotary press with a bottom-loaded forwarder, which (by means of a larger angle of rotation intended for aligning the sheets on the surface table) provides an increased accuracy of the sheet at the entrance to the printing area and an improved print quality. The invention is based on the idea of creating a sheet-fed rotary press with a foregrey-ferrous bottom, in which the position of the overlay table relative to the overlay drum ensures that the sheet is fed along a gentle path, and the intersection point of the trajectories of the leading edge of the forward-driven sheet and the front stop is above the surface of the overlay the table.
The goal is achieved by the fact that in a sheet-fed rotary press, including an oblique patch table, an overhead drum, a bottom-mounted forwards transfer of sheets from the overlay table to the seals of the overhead cylinder, one or more printing sections and leaflet device, an overhead drum 5 located above the plane of the working surface of the overlay table 7.
In addition, the forwarder 6 includes a driving link 11 with a three-arm lever 13 hinged on it, carrying a support jaw 13.2 of the grippers, which is fixed on the middle shoulder of the three-arm lever 13, on the third 13.3 shoulder of which roller 19 is fixed for engagement with the driver cam 23.
The drive cam 23 is mounted on the frame of the machine, and the driving link 11 of the trade mark 6 is associated with a cam mechanism consisting of a cool-steering 28 control, a roller 29 carrying the roller of the lever 30 and a connecting rod 31, which is located on the shaft 14 and is rigidly connected With the roller lever 16, the movable jaw 15 is fixed on the first 13.1 shoulder of the three-arm lever 13, and on the roller lever 16 is placed the roller 17 for engagement with the driving cam 22 of the grippers control mounted on the machine frame.
The above arrangement of the overlay drum relative to the overlay table has the advantage that the overlay area on the overlay table is quickly released from the sheet being removed, while the front stops, after a small angle of rotation, can be turned back to the overlay area to align the next sheet. Consequently, there is a large angle of rotation for leveling the sheet, which makes it possible to precisely level the sheet even at high speeds of the machine. In addition, only a small oscillatory angle is needed to rotate the front stop back, while the acceleration and inertia force are insignificant.
A canopy of sheet movement trajectories is extremely significant when processing a wide pallet of printing materials.
FIG. 1 shows a first printing section of a sheet-fed rotary printing press with an overlay table, side view in FIG. 2 — forgrifer with a control mechanism for the grips and a reference plane of the grippers; in fig. 3 - the second version of the mechanism for controlling the forgrarayr; in fig. 4 - drive for the co-rifer; in fig. 5, the motion path of the sheet and the front stops in FIG. 6 schedule of movement of the co-rifer and its control mechanisms.
The first printing section of a sheet-fed rotary printing machine consists of a printing cylinder 2, an offset cylinder 3, a printing cylinder 4, an overlapping drum 5, a forgraver 6 and an overlay table 7.
On the overlay table 7 there are devices 8 for lateral alignment and front stops 9. The overlay drum 5 and the print cylinder 2 are equipped with clamping jaws 10. Forgrariver 6 consists of a driving link 11, which is rigidly connected to the shaft 12 The driving link 11 is rotatably movable with a three-arm lever 13, on the first 13.1 shoulder of which the shaft 14 is located at one hinge point with grippers with grippers 15 rigidly connected with it and with roller lever 16 with a cam roller 17, in addition, a three-pin furnace The second arm 13 has a second shoulder 13.2, which is simultaneously made in the direction of the supporting jaw of the grippers, and the third shoulder 13.3, made as an angle with the bearing bolt 18 and the roller 19. The shoulder and the roller arm 16 are connected to each other by the first spring 20 stretch The first stretch spring 20 pulls the cam roller 17 away from the gripper control cam 22, which is mounted on the chopper 21 and swings around the shaft 12.
The cam 22 of the gripper control of its drive is known and presented in GDR patent No. 122239, so there is no need to describe them in more detail.
The roller 19 is mounted on the third 13.3 lech of the three-shouldered shoulder plate 13 on the swivel cam 23 511 which is located on the bolt 24, which is mounted in the frame of the machine. The rotary cam 23 is supplied through a spring 25 (by a known and not depicted poet) drive. The profile of the rotary cam 23 in the region of the overlay table 7 is designed as a circular arc that goes into a straight line. A second tension spring 25 is located on the support bolt 18, which is fastened with the other end to rod 27 fixed on shaft 12. The forgrariver 6 drive consists of a control cam 28, concentrically relative to the surface drum 5, a control cam roller 29 moving along the path of the cam 28 of the control, the angular roller lever 30, placed in the frame of the machine, on one arm of which the roller 29 of the control cam 29 is rotated, the connecting rod 31, which is pivotally connected to the second angular arm roller lever 30 and rigidly connected with the driving link 11 through the shaft 12 of the driven link 32, which is hingedly connected to the connecting rod 31. The roller 29 of the control cam is pulled by the spring 33 from the cam 28 of the control. In the second version of the forwarrior 6 control mechanism, the swivel cam 23 does not move up and down, however, in this case, the entire rotary cam 23 swings around the bolt 24. The rotary cam 23 and the gripper control cam 22 have, compared to the first option of the forgyrider control mechanism, another cam profile. Sheet rotary printing machine works in the following way. The sheets 34 are cascadely fed to the storage table 7 and aligned with the front edge on the front stops 9, and then along the side edge on the devices 8 for lateral alignment. After inserting the sheet 34, the front stops 9 rotate backward from the overlay table, with the ends 35 of the front stops describing the trajectory 36 (Fig. 5). After the sheet 34 has been released by the front stops 9, the 34 is accelerated by the forwardriver 6 (which seizes it in the initial position of the SRI on the front stops 9) and transferred to the drum drum 5. From the drum 5, the sheet 34 is transferred by the clamping jaw 10 of the printing cylinder 2 and printed while feeding sheet 34 into the machine, its leading edge passes along path 37 (FIGS. 2 and 3). The intersection point 38 of the upper trajectory 37.1 of the supporting plane of the grippers and the trajectory 36 of the ends of the front stop is above the surface :: of the overlay table 7. The movement of the forward rifle 6 and its control are as follows. Using the steering cam 28 with the overlay drum 5, the steering cam roller 29, the angular roller lever 30, the connecting rod 31 and the driven link 32, the driving link 11 receives (according to the motion along the curve of the control cam 28) oscillatory motion, which is rotationally performed by the associated the leading link 11 three shoulders lever 13 and the shoulder of the three shoulders 13, the shaft 14 with the hooks, the grippers 15, and the roller lever 16 with the cam roller 17 and the bar 27. The movement of the forgrafer 6, the cam 22 the lugs of the grippers, the gripper 15 relative to the second shoulder 13.2, the three-arm lever 13 and the rotary cam 23, related to one tact of the machine l, 360 single-turn shaft), performed in the form of the reference plane of the grippers, are shown in the graph (Fig. 6). As can be seen from the graph, the oscillatory movement of the forgrayr 6 is interrupted only by a short stay in the receiving position of the sheet on the overlay table 7. In this transfer position (dashed line in Figures 2 and 3), the gripping control cam 22 rotates clockwise and the sheet 34 is clamped by the grippers 15 on the second 13.2 shoulder of the three-arm lever 13, which is made in the form of the supporting plane of the grippers, and the rotary cam 23 is in the lower position (solid line in Figs. 2 and 3). After setting the sheet, the forgrarifer 6 with sheet 34.1 rotates to the position of sheet transfer 11, 12, 1 3 (spallable line in Figs. 2 and 3) in which the sheet 34.1 reaches the speed of the machine and is transferred to the overlay drum 5. After receiving the sheet with the overhead drum 5, the grips 15 of the freeware 6 open and release the sheet 34.1 for further transport with the overlay drum 5 (at an angle rotation equal to approximately 90 ° single-turn shaft, Fig, 6). In the phase of movement between the positions of receiving the sheet and transferring the sheet, the rotary cam 23 is in the lower position, and the sheet 34.1 moves along the upper trajectory 37.1 of the supporting plane of the grippers, which appears due to the superposition of the oscillatory movement of the forgrafer 6 with the produced (as a result of rolling 19 on the arc part of the rod 27) by moving the three-arm lever 13. After transferring the sheet, the grippers 15 (due to the opening movement) are accelerated, moved along (determined by the movement of the surface drum 5) the sheet trajectory, 6 Press up to speed O in the reverse position of the dash-dotted line in FIG. 2 and 3). At the same time, the rotary cam 23 rotates to its upper position, with the roller 19 constantly rolling onto the rotary cam 23 (dotted line, in Fig. 2). The overlapping of the pivoting movement of the turning cam 23 and the rolling of the roller 19 on the rotating cam 23 is only minimally reflected in the control of the three-arm lever 13 in the movement phase of the sheet transfer — reverse sheet transfer — return movement. After the movement reversal position, the forgrifer 6 returns through the transfer position of the sheet 11, 12, 13 back to the sheet receiving position, with the reference plane of the grippers 13.2 describing the lower trajectory of the reference plane of the grippers. Before reaching the position of receiving the sheet, the rotating cam 23 rotates to the lower position so that the reference plane of the grippers 13.2 falls under the next sheet 34.2, which is set by the forwarder 6. The control of the forgrarayr 6 according to the ETO option (Fig. 3) is similar to the management of the forwarder 6 according to the first option ( Fig. 2) with the only difference that the shape of the lower trajectory 37.2 of the supporting plane of the grippers before reaching the position of receiving the sheet on the overlay table deviates from the upper trajectory 37.1 of the supporting plane of the grippers and the supporting 13.2 loskost grippers during the return movement and 6. forgrayfe carried closer to the overhead drum 5 and removes the sheet 34.1. The movement of the cam 22 of the gripper control, which causes the gripper 15 to move around the gripper shaft 14, is not explained in more detail since this movement is known and therefore not significant to the invention. In the proposed machine, the forwardrifer 6 is provided with a gripper 15, however, it is possible to feed the sheet into the machine using a suction cup. Recognized as an invention according to the results of an examination carried out by the Agency for the Invention of the German Democratic Republic.
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权利要求:
Claims (8)
[1]
1. SHEET ROTARY PRINTING MACHINE, including an inclined overhead table, an overhead drum, a forger with a lower arrangement for transferring sheets from the overhead table to the grippers of the overhead cylinder, one or more printing sections and a sheet-output device, characterized in that the overhead drum 5 is located above the plane work surface
[2]
2. Machine by π. 1, characterized in that the forger 6 includes a leading link 11 with a three-arm lever 13 pivotally attached thereto, bearing a gripping jaw 13.2 of the grips.
[3]
3. The machine according to paragraphs. 1 and 2, characterized in that the support jaw of the grips is mounted on the middle shoulder of the three-arm lever 13.
[4]
4. The machine according to paragraphs. 1-3, characterized in that on the third 13.3 shoulder of the three-arm lever mounted roller 19 for interaction with the drive cam 23.
[5]
5. The machine according to paragraphs. 1 and 4, characterized in that the drive cam 23 is mounted on the frame of the machine.
[6]
6. Machine by and. 1, characterized in that the driving link 11 is connected with a cam mechanism consisting of a control cam 28, a roller 29, a bearing roller of the lever 30 and a connecting rod 31.
[7]
7. The machine according to paragraphs. 1-6, characterized in that located on the shaft 14 and tightly connected with the roller lever 16, the movable jaw jaw 15 is attached to the first 1 3.1 shoulder of the three-arm lever 13.
[8]
8. The machine according to paragraphs. 1-7, characterized in that on the roller arm 1b there is a roller 17 for interacting with a drive cam 22 of the gripper control mounted on the machine frame.
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同族专利:
公开号 | 公开日
DE3008226C2|1985-04-04|
JPH0232986B2|1990-07-24|
JPS55145951A|1980-11-13|
US4370928A|1983-02-01|
CS236902B1|1985-05-15|
IT8067501D0|1980-04-01|
IT1130101B|1986-06-11|
DD142694A1|1980-07-09|
DE3008226A1|1980-10-23|
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
DD79211938A|DD142694A1|1979-04-02|1979-04-02|ARC PRINTING MACHINE WITH A BOTTOM PRE-GRIPPER|
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