专利摘要:
A sheet feeding unit includes a stack elevator which raises the top of a supported stack of sheets to infeed height. A sensor senses the position of the top sheets of the stack, to ascertain whether these exhibit improper left or right offset. Depending upon the magnitude and size of the sensed offset, the stack elevator is correctively shifted, to minimize offset at the top of the stack. Although the sensor is located to only one side of the stack, not at both sides of the stack, it is capable of sensing offset in both left and right directions. When the elevator is lowered, for the laying in of a fresh stack, it is automatically brought to a centered position.
公开号:SU901219A1
申请号:SU787770095
申请日:1978-02-21
公开日:1982-01-30
发明作者:Франк Фихте;Вольфганг Паул
申请人:Феб Полиграф,Друккмашиненверке Лейпциг (Инопредприятие);
IPC主号:
专利说明:

(54) DEVICE FOR SIDE ALIGNMENT OF STAPLE SHEETS IN SELF-ACCARDS
one
This invention relates to a device for lateral alignment of detachable sheet slipways in feeders.
The sheets to be cut must be fed in a certain lateral position to the processing machine, for example to the printing one. In connection with this, it is convenient to hold the sheet of sheets before and during the process of separation of sheets in a corresponding lateral position to the separating organs.
Arrangements are known for automatically aligning the stocks of sheets, in which on both sides of the stocks of sheets, near its upper edges, are located one probe, which gropes the lateral position of the stocks. Each probe is associated with a switch so that when the lateral position of the slipway is changed, the lifting motor, through a switch mechanism, corrects the position of the slipway table and, thus, the slipway of the sheets.
However, the known devices require relatively high maintenance and configuration costs. The slipway must be inserted into the feeder in the lateral position relatively accurately to the position of both probes, because otherwise, due to lateral displacement of the sheet stocks, the functions and one of the probes may be impaired during the rapid transportation of the stocks to the sheet separation zone. And so, an additional adjustment of the position of the stocks by manual control is necessary. In addition, the need to configure probes depending on the format. As soon as, for example, the probes are installed very close to each other, the regulating device loses its function, since both switches are turned on simultaneously. If the probes are set far apart, the regulator does not work.
The purpose of the invention is the creation of a device, which, along with a reduction in technical costs and configuration costs, depending on the format, could enable automatic side-leveling of the stocks.
The device for automatic side alignment of the sheet stocks must ensure that the configuration depends on the format only on one machine side of the feeder, while the slipway after its insertion into the feeder with a large tolerance range during the separation must remain precisely aligned from the sides so that during the rapid lowering of the slipway the boards were centered and changed the stocks without stopping the machine.
This goal is achieved by the fact that wn is only provided on one side of the sheet stocks, the tail of which affects two inductive switches arranged one behind the other, which control the servomotor attached by the spindle and the leash to the slipway.
In this case, the signals of the inductive switches are processed by the logical elements NOT and AND, as well as by power amplifiers to control the servo motor until the upper sheets of the stocks are in the area of the separator.
The servo motor is controlled to center the strut board at the time of its accelerated lowering by means of switching, fixed on the above-mentioned lead and affecting two switches, with relay contacts controlled by light gates being provided for switching.
The gauge carrying the tail plumage is partially bent obliquely and with the help of two bolts inserted into the retaining block, horizontally, with one of the bolts grabbed by the pressure spring and the bolt shoulder limits the maximum movement of the probe.
In addition, the plow is related to the holder, which is adjustable depending on the format, and is driven vertically by means of two support rods with the holder lever; the above inductive switches are attached at the lower end of the holder.
The advantage of the proposed device is that the arrangement of only one probe is adjusted when replacing the format quickly and completely easily and no matter which of the side stops with the leveling mechanism located on both sides of the overlay table is applied, and also that It is possible to use known devices operating without stopping. In addition, with the help of the proposed device, stocks can also be processed that have curved or wavy side edges.
FIG. 1 shows a feeder, view from the stocks (the side edges of the stocks are exaggeratedly curved); in fig. 2 — node I in FIG. 1, section A-A in FIG. 6 (probe stock, side view, the position of the tail of the tail relative to the inductive switches, corresponding to the range of "Good stocks,); in fig. 3 - tail plumage and ipductive switch (the edge of the stocks on the right); in fig. 4 - the same, (edge
stocks on the left); in fig. 5 - the same (probe, and with it the tail plumage is raised due to the displacement of the surface of the stocks to the right); in fig. 6 is a view B in FIG. 2; in fig. 7 is a section bb of FIG. one; in fig. 8 is a block diagram and a partial image of a control circuit.
The side walls 1 and 2 of the feeder are connected by a traverse 3. The feeder is equipped with a format scale 4. On the traverse 3 there is a holder 6 which is fixed in place by a knurled screw 5. On the lever 6 of the holder 6 there are two support bars 7, which are supported on the lever 6 by fixed rings 8 and are led through the holes in the lever. A retaining block 9 is fastened on the supporting rods, which holds the upper bolt 11 in the slot 10 and the bolt 12 in the hole located parallel to the slot. The retainer block 9 is also supported for the pressure spring 13, pressed by the bolt 12. The pressure spring 13 presses on the probe 14 (the pressure is limited by the shoulder 15 of the bolt 12) against the stocks 16 sheets. With probe 14, element 17 is rigidly connected, reaching the lower end of 6 holder
6. Element 17 generates various pulses depending on the position of the stocks 16 sheets relative to the holder 6 and thereby 1 unit relative to the lower end 6 of the holder 6 in the area of two inductive switches 18 and 19 located at the lower end b.
The feeling device, consisting of the probe 14 and the element 17, is movable, firstly, vertically through the bearing arms
7, passing through the drilled hole of the lever 6, and, secondly, horizontally against the pressure spring with its bolts 11 and 12, i.e., perpendicular to the plane of the sheet penetration, in both cases reliably protected from twisting.
The format scale 4 can be made with two different ranges. If the right side stop is working, then the stock should be shifted slightly to the left; if the left side stop is working, it should be shifted slightly to the right.
On side walls 1 and 2, guides 20 and 21 are attached, which are wrapped around guide blocks 22 and 23. On guide block 22, a rod 24 is attached, a leading board 26 of a pile is attached using a block 2 :, On a block 25, a left-side chain is attached; , -; ry hoist chains 27. On the other side: Item 26 of the stocks, the same MO i;., ka in: ,, leash 28, on Koti0pi .ui ii; ..; -; / ejt.ieHri one of the chains of the right pair of lift meters: peni 29 and which is an internal thread; ) G1; avg erg screw 30, having between: HBul1 mounting rings 31 and 32 external thread. The screw 30 is connected to the servomotor 33, preferably
single-phase AC motor, working on the principle of ferraris. The servomotor 33 is flanged to a guide block 23, which encloses the guide 21. On the leash 28, a switching slide 34 is attached, which actuates one of the two switches 35 and 36, depending on the position of the board 26, and thus from the position of the leash 28. From platform 37, the slipway 16 sheets is inserted into the bag so that its edge directed to the processing machine is adjacent to the tire with the front stops 38. In the area of the separating suction 39 of the separator there are light separator 40 on the side wall 1 source 41 and 41 direct current, on the side wall 2 - photodiode 42. The photodiode 42 is connected to the amplifier 43 of the light gate, which is powered by a source 44 and 44, direct current, and to one of the inlet limit switch 45 is activated auxiliary thickness of the stocks continuously operating device (not shown). Using relay 46, the relay contacts 46 are brought to their lower position (shown in Fig. 8 by a dashed line) if the berth 16 interrupts the connection between the light source 40 and the photodiode 42. In this case, servo control is taken up by inductive switches 18 and 19 in conjunction with element 17. Elements 48, 49, and I 50, powered by a direct current source 47 and 47, are connected to inductive switches 18 and 19. And element sends its signals through power amplifier 51 and one of the relay contacts 46 to relay 52, relay contacts 52 cat cerned may control the servomotor 33 in one direction of rotation thereof. In one of the conductors in a known manner included the capacitor 53.
The signals of the elements 48 and 49 are processed in the subsequent element 54, and through the power amplifier 55 and one of the relay contacts 46 they can be transmitted to the relay 46, from which its relay contacts 46 can control the servo motor 33 in the reverse direction of its rotation. The servomotor 33 is connected, in addition, to the source 57 and 57 of the AC.
The current circuit supplied by the current source 47 and 47 is turned on by a limit switch 58, which opens the current circuit when the main pile, i.e., the board 26 of the stocks, is in its lowest position. The self-holding contact 59 is opened when the servo motor 33 must be manually controlled by one of the pushbutton switches 60 or 61. With the self-holding contact 59 closed, current can flow through the limit switches 35 and 36. The self-holding switch 59 is closed only in connection with lowering the slipway board 26 namely, in connection with the triggering of a signal for lowering the stocks.
After delivery of the stocks 16 to the samona 5 fret, it is transported in a known manner at high speed in the direction to the separation devices 39. As soon as the light shutter 40 and 42, through the upper edge of the stocks 16, brings the relay contacts 46. to their lower (dashed) position, inductive switch 18 (19). When the slipway 16 is within the lateral access (Fig. 2), the signal from the inductive switch 18 is sent to the elements HE 48 and AND 5 50, while neither the element HE 49 nor the element 50 also receives a signal from inductive switch 19. As a result, neither relay 52 nor relay 56 is controlled.
权利要求:
Claims (5)
[1]
If the side edge of the stocks is in the leftmost position (FIG. 3), then both switches 18 and 19 do not output signals to the HE elements 48 and 49, which therefore output signals to the And element 54 so that the relay 56 is controlled by the power amplifier 55 , the relay contacts 56 are triggered and the servomotor 33 is driven while the element 17 n ° is in the position shown in FIG. . position If the side edge of the samnac.SA 16 moves the probe 14 to the right (Fig. 4) or the surface of the stocks 16 of the samonaclada lifts the probe 14 with the stockshift extremely shifted to the right (Figs. 5), signals are being emitted from both inductive switches 18 and 19 NOT 48 and 49, but from element I 50, power amplifier 51 controls relay 52. Servo motor 33 is driven in the opposite direction from that described earlier and transports the stocks using the elements described to the left until element 0 17 takes the position shown in FIG. 2. When the slipway board 26 is lowered, the light gate 40 and 42 exit from the zone. In this case, the contacts 46 are brought back by the relay 46 to the position shown in FIG. 8 straight lines. The same thing happens when the limit switch 45 is activated by a loaded auxiliary layer and thus opens the current circuit. In both cases, the adjustment does not work, since during the lowering of the board 26 of the stocks, the self-holding contact 59 is closed, the board 26 of the tracks 26 is shifted by the switching rocker 34 and one of the switches 35 or 36 until either the switching rocker 34 takes the position specified in FIG. 1, or the board 26 of the stocks, arriving at its lowest position, will activate the contact switch 58, ending the lowering of the board 26 of the stocks and at the same time the self-holding contact 59 opens. While lifting the board 26 of the stocks, you can perform a manual adjustment if you center the board or the imposition of a new main stocks when it comes to the possibly existing auxiliary stocks do not achieve exact match. In this case, one of the pushbutton switches 60 or 61 is actuated. When unloading the auxiliary bus to the stocks, this possibility is again eliminated by the fact that the position of the relay contacts 46 is then reversed and regulation starts via inductive switches 18 and 19. carry out in a similar way. Claim 1. Device for lateral alignment of sheet stocks in the feeders, in which the position of the stocks are felt laterally near its top edge and the result, when deviating from the predetermined position, the stocks are processed for reciprocating control of the board with the stocks and with it and the stocks perpendicular to the feed direction , characterized in that only on one side of the feeder is a probe which, by means of an element, acts on successively arranged inductive switches, with the help which is controlled by a servomotor connected to the slipway by a screw and a lead.
[2]
2. The device according to claim 1, wherein the signals of the inductive switches are processed using the elements HE and AND as well as power amplifiers to control the servo motor as long as the upper sheets of the self-coil are in the zone of a separate suction control of the servo motor during accelerated lowering Slip-on boards are a switching switch mounted on the driver and affecting the switches, with relay contacts controlled by the light gate provided for switching.
[3]
3. The device according to PP. 1 and 2, characterized in that the probe is a carrier element, partially obliquely bent and horizontally aligned with two bolts aimed in the holding block, one of the bolts is grabbed by the compression spring, and the shoulder limits the maximum movement of the probe.
[4]
4. Device on PP. I-3, characterized in that the probe relates to a holder that is adjustable depending on the format, and is vertically adjustable on the holder arm by means of two supporting plates, at the lower ends of which the inductive switches are fixed.
[5]
5. Device on PP. 1-4, characterized in that a single-phase AC motor operating according to the well-known principle of Ferraris is used as a servo motor. - / 1 (Rig.z ILTl. FIG.
(rig 5
7:
(Rig.6
AT 8
37 2f 31 30 28 32 23
one
38
.
36 3if Y7 // 7
类似技术:
公开号 | 公开日 | 专利标题
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US2373222A|1945-04-10|Sheet detector
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同族专利:
公开号 | 公开日
CS194601B1|1979-12-31|
IT7867444D0|1978-03-03|
SE426160B|1982-12-13|
GB1579015A|1980-11-12|
JPS6147770B2|1986-10-21|
US4245830A|1981-01-20|
SE7802446L|1978-09-05|
JPS53131106A|1978-11-15|
FR2382390A1|1978-09-29|
DD131549A1|1978-07-05|
IT1109744B|1985-12-23|
DD131549B1|1979-12-27|
DE2808774C2|1986-11-06|
DE2808774A1|1978-09-07|
FR2382390B1|1981-07-17|
引用文献:
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
DD19766777A|DD131549B1|1977-03-04|1977-03-04|DEVICE FOR SIDE-ALIGNING THE BOW STACK|
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