DE1095253B - Device for setting and controlling the saddle feed on paper cutting machines - Google Patents

Description

GERMAN

The invention relates to a device for adjusting and controlling the saddle before thrust on paper cutting machines, in which the forward and backward movement and the intermittent advance of the stop saddle takes place by the same drive links and the intermittent, by any known lifting means limited feed can be switched on by hand.

Paper cutting machines in which the stop saddle is manually activated after a clutch has been actuated is moved mechanically into a position determined by a stop are known. You are either provided with stop drums or similar devices in which various manually adjusted Stops one after the other directly or via switching means, racks, etc. come into effect or have them oscillating feed members, in which the stop saddle turns over once the feed member has been set always the same amount is shifted.

In the case of the first-mentioned feed devices, it is necessary to have one for each cutting position of the saddle Provide stop and fasten in the appropriate position. Especially when cutting narrower Strip claims the setting of the stops or electrically scanned contact marks or the like. a considerable amount of time. Due to the design, it is not even possible with many such machines Use the stops to set the required small width or number of strips. Furthermore is at A disadvantage of these machines is that the devices for switching the stops or the stop drums make the machine undesirably more expensive and practically only have one work program at a time the attacks can be saved.

On machines with oscillating feed elements, there is no need to set the stops or cut Any number of strips, even the smallest of widths, for example for the tinsel cut, does not produce any Difficulties, but these machines are at one setting because of the constant feed rate the swing arm cannot be used universally.

If different strip widths are to be cut one after the other from a stack, only one is used Pure manual feed of the saddle is possible, provided that the much more expensive automatic ones are not used Want to use cutting machines with magnetic tape or light mark control that are not subject of the invention.

The object of the invention is to combine the advantages of the two types of machines mentioned without their To have to accept disadvantages and, in particular, to create a device with the simplest construction and adjustability of a manually switchable mechanical feed of the stop saddle so device for setting and controlling

of the fifth wheel
on paper cutting machines

Applicant:

VEB

Leipziger Buchbindereimaschinenwerke, Leipzig W 31, Karl-Heine-Str. 107/111

Werner Pertermann, Leipzig,
has been named as the inventor

probably by constantly the same and even the smallest amounts as well as by different path lengths in the manner of a preset Program and thus the movement of the stop saddle by hand to a large extent saved. This object is achieved in that between the drive means for the stop saddle and the stop which is expediently attached to a stop drum, which can also be replaced if necessary according to the invention a manually switchable clutch and connected to this one against the effect a spring on a terminal switch for switching off the movement of the drive means for the stop saddle or its drive device and when the clutch is released, the rack is in contact with the stop is arranged, which is disconnected from the drive means for the stop saddle when the coupling is released and is moved against the stop by the action of the spring releasing the limit switch, wherein the movement of the drive means for the stop saddle is only initiated when the clutch is engaged again will.

As a result of the invention, compared to known arrangements for semi-automatic mechanical Method of the stop saddle using adjustable stops have some significant advantages. On the one hand, the mechanical effort is extremely low and drive parts that are already present become largely shared, on the other hand only one stop has to be set if a stack is in any one Number of strips of equal width to be cut, with the strip width constant with the greatest possible accuracy remain. In addition, the rack with its drive devices is used practically as a measuring device; ever according to the selected translation, their path can be a multiple of the stop saddle path, so that

009 679/9

Claims (2)

3/4 the necessary accuracy without difficulty to drum 29 with the handle 32 adjusted so that the is to achieve. just needed stop 28 by way of the rack One embodiment of the invention is schematic, that is, it is in the operative position. By pressing down table, dispensing with the fork lever 22, which is not essential to the invention, the coupling between the borrowed details in Figs. 1 and 2 shown. 5 conical sleeve 21 and the coupling sleeve 23 released, so Fig. 1 shows a plan view of the drive means that the coupling sleeve 23 with relaxation of the for the stop saddle and the drive device rotate spiral spring 27 and the rack 25 against the for the drive means; Move the stop 28 in the active position Fig. 2 shows a view of these facilities from May. As a result, the terminal switch 31 is released the left side of Fig. 1, partly in section. io and the motor 11 can start as soon as it goes through a Additional switching means, not shown, can be rotated on a table 1 of the cutting machine, for example an intervertebral disc 2 is attached, via which a push button is switched on in a known manner. Thieves- Way a steel belt 3 for driving a not shown actuation of the switching means for the advance by one provided stop saddle is placed. This dimension, which is determined by the drive, is only possible if means for the parts forming the stop saddle 15 of the fork lever 22 are released and thereby the coupling by means of an internal toothing of the intervertebral disc 2 between the conical sleeve 21 and the coupling sleeve 23 driven gear 5 engaged, which is switched on again. Via a shaft 6, a worm wheel 7, a worm 8, the motor 11 is now through the switching means to a pair of gears 9, 10 of an electric motor 11 moving away from the fixed by the stop 28 is driven. On which the gear wheel 9 is switched on with the 20 dimension, then the rack 25 is syn- The shaft connecting the worm 8 is a brake drum chronologically for the movement of the stop caliper of the gear wheel 18 16 attached. On the machine frame is a bolt 15 over the coupling parts 21 and 23 with an increase in the strengthens, on which a brake lever 14 is pushed, tension of the spiral spring 27 again in the direction of a block 13 on the machine frame is also moved to the limit stop 30 until it is actuated. A looping around the brake drum 16 of the terminal switch 31 disconnects the motor 11-brake band 12 is on the one hand on the block 13 and on the other, and the braking elements 12 to 16 are on the lifting side attached to the brake lever 14 in such a way that the magnet 17 until the motor comes to a standstill or until actuation of the brake lever 14 by a solenoid at the end of the actuation of the switching means or with 17 is tensioned and thereby the described other time limit switches on and data drive device for the drive means of the stop 3 ° by the drive device for the drive means satteis stops. the stop saddle stops immediately. The saddle drive described here is in the same way by means of other known switching means, for example or a similar form on known cutting machines as a two-hand indentation, is now the with mechanically movable saddle available and cutting process initiated. When the cutting process does not form part of the invention. 35 finished and possibly a new stop 28 in The working position is brought by the internal teeth of the intervertebral disc 2, the stop, a gear wheel 18 with a cylindrical extension 20 attached to the saddle, can be driven mechanically in the described manner into the next cutting position in the machine frame,
solid pin 19 is pushed. On the stop, which can be exchanged if necessary, on the cylindrical extension 20 there is a conical sleeve 40 drum with any number of stops can be set in 21 non-rotatable but axially by means of a cutting program that is customary in the machine; rack mounted fork lever 22 slidably attached. If necessary, further devices can be provided. In the rest position, the conical sleeve 21 is pressed into a coupling, which presses a fully automatic operation of the Iungshülse23, which allow an external toothing 24 cutting machine. Strip widths, which have one another and which also repeat 45 pushed onto the pin 19, only need once through an anist. To be set on the coupling sleeve 23 on the one hand and the tapping point, on the other hand, when defining autofenl9, a spiral spring 27 is fastened in such a way that program sequences can be switched automatically so that when the coupling sleeve 23 is rotated it surfaces and sometimes different strip widths can be seen by advancing of the stop saddle is tensioned. however, it is useful for each feed movement A rack 25 is in a guide 26 at 5 ° a stop in front of the other constructive Slidably mounted and stands with the external toothing to keep effort low. 24 of the coupling sleeve 23 is constantly in engagement. The applicability of the inventive idea is The toothed rack 25 is in no way restricted to the exemplary embodiment by the effect of FIG. Coiled spring27 pressed against a stop28, the claims on a stop 55 that can be rotated by a handle 32 drum 29 clamped with further stops 28 1 · Device for setting and controlling the is. In its other end position, the rack 25 is attached to the saddle feed on paper cutting machines by actuating a limit switch on one of which the forward and backward movement of the Limit stop 30 at. The plant of the rack 25 saddle by the same drive links at the limit stop30 is to be regarded as the normal position; 60 takes place and the intermittent feed by hand by means not shown, it is prevented that switchable and an adjustable connection the rack 25 is limited impact when returning the stop saddle, which in turn the path of a the limit stop 30 leaves. rack that can be driven by the drive of the saddle The control of the feed device of the limited, characterized in that between the impact saddle happens as follows: 65 drive means for the stop saddle and the After all required stops 28 on the stop (28) a manually switchable clutch Stop drum 29 is arranged according to the scales located there (21, 23) with a between the have been set and clamped, whereby for stop (28) and a limit switch (31) several mutually equal feed path lengths only reciprocating rack (25) constantly a stop 28 is required, wind the stop 70 is in engagement and that the rack (25) at released coupling can be moved back against the stop (28) by means of a spring (27). 2. Apparatus according to claim 1, characterized in that the rack (25) driving Coupling part (coupling sleeve 23) rotatably movable with the interposition of a spiral spring (27) on a pin (19) one in the ring gear of an intervertebral disc (2) as a drive means for engaging the stop saddle and provided with an axially displaceable conical sleeve (21) Gear (18) is arranged. Considered publications:
German patent specification No. 669 023. 1 sheet of drawings ® 009 679/9 12.60