JPH01246093A - Cutting and extracting device for web material on winding reel - Google Patents

Abstract

PURPOSE: To drive a separating device for a web material similarly to a cutting piece carrying output device only by a proper driving device by providing an output reel to be separated from a counter reel in a first position by a single cam disk and to be pressed to the counter reel in a second position. CONSTITUTION: An output device 6 is arranged in the rear of a separating device 3 in an output channel according to a flow of a material to be controlled in driving according to the separating device. While this separating device and the output device are joined in driving to be propelled by a common driving motor, an output reel 9 is arranged on the opposite side of a counter reel 8 to support the counter surface. In this first position, the output reel is separately set from the counter reel by a cam disk 12 joined in driving to the separating device to pass an unseparated web material through clearance between the output reel and the counter reel. In a second position, the output reel is pressed to the counter reel to carry an already separated material toward the channel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for cutting and unloading web material on a take-up reel, particularly when paper is
tion) and passes between the take-up reel and the separator, an output device being disposed in the output channel after the separator according to the flow of material and driveable in a controlled manner in accordance with the separator; The output device has an output reel that interacts with the counter surface, in a first position of which the output reel causes unseparated web material to pass through a gap between itself and the counter surface; It relates to a device that interacts with a counter surface at a location to deliver already separated material to a channel output.

BACKGROUND OF THE INVENTION Devices of the above-mentioned type are used, for example, for recording and printing devices, teleprinters and telecopiers, ticket machines, video text terminals and similar devices. Other applications such as automatic dispensers for textile cleaning and the like are also possible.

A significant problem with all of these applications is that the web material - such as telex or bus/train/admission tickets - is handled by untrained or hasty users who cannot wait for proper cutting and output of the web material. an operating error in which the device begins to tear or remove it before it is cut or which can be done externally without relying on a previous cutting procedure, and it It will have various undesirable effects depending on the

Devices of the above-mentioned type are known in order to eliminate damage caused by vandalism or incorrect operation or improper use of such devices accessible to ordinary persons. It became like this, but
A device in which a piece of material separated from the web material within the device is fed into an output channel or into an output box or other similar container, and only after that portion has been completely separated from the rest of the material. It is useful for the transmission of cut pieces of the selected material so that the cut pieces of the material can be accessed for users outside the machine. Thus, by pulling or tearing off accessible pieces of material,
It does not affect the resulting printing of any piece of paper or the cutting device itself.

Furthermore, it is not possible, for example, to unwind large amounts of web material.

A practical device of the above-mentioned kind is disclosed, for example, in US-PS No. 3 965 292, in which the paper is conveyed from a take-up reel to an output reel into an output box after copying in an optical copier. It is cut by a knife moved transversely to the feed direction and at the output box it is used by the operator of the device. Thus, the above-mentioned problem is practically solved and the additional costs are however considerable as far as configuration and control are concerned, which poses a problem especially when only a small amount of available space is available and in many cases the application is It's impossible.

OBJECT OF THE INVENTION It is an object of the present invention to develop a device of the above-mentioned type, which avoids the above-mentioned disadvantages of known devices and which, as far as construction and control are concerned,
The object is to be able to provide a simple combined cutting and output device which makes erroneous operations of the above type impossible and which is nevertheless adapted for application in arbitrarily configured devices.

According to the invention, the separation device and the output device are drive-coupled and propelled by a common drive motor, the output reel being positioned opposite the counter reel supporting the counter surface;
In a first position, this output reel is set away from the counter reel by at least one drive-coupled cam disk, and in a second position it is pressed against the counter reel for propulsion. It is therefore possible to drive the separating device for the web material as well as the output device for the further conveyance of the cut pieces of material only by means of a suitable drive, so that the web material can be transferred to the cam for the driving connection. It is necessary to ensure that in the second position of the disc the output reel is at least already quite finished before interacting with the counter reel, and the separated pieces of material in between are pulled out and further shifted. be done. The drive coupling of the two previously mentioned devices by a common drive motor provides a simplified control of the device and allows for a very simple and compact design, which is especially suitable for modern telecopy, disk calculators or the like. This is of considerable advantage in small devices such as those in

According to a further embodiment of the invention, the or each cam disc each has around its periphery three cam ranges with different distances to the axis, the one of the cam ranges having the smallest distance being the output reel. assigned to a first position, the one with the greatest distance is assigned to a second position of the output reel, while the intermediate range is assigned to a third position between the first and second positions;
In this third position, the output reel is successfully propelled, but at the same time does not contact the counter reel. This embodiment allows the web material to be pre-stretched before or while the pieces to be drawn are cut, thereby outputting the output solely by the friction of the web material on the surface of the output reel without the aid of a counter reel. The reel is (crossing knife,
or by impact cutting or similar devices), producing a positive stretching effect that makes cutting easier and cleaner.

Another embodiment of the invention comprises an adjustment notch (indentation) in the at least one cam disc for adjustment of its rotational angular position with respect to the separating device, which is arranged to a first position of the output reel with a minimum distance to the axis. Preferably within the assigned cam range. Precise adjustment of the separation sequence and the power output is therefore possible before the device is put into operation, thereby avoiding, for example, the material to be separated having parts of the material torn off at least partially. The described arrangement of this adjustment notch in the cam range assigned to the first position of the output reel makes it possible that the output reel does not have to rotate over the adjustment notch on each of the cams or cam discs. , but the cam area mentioned above never comes into contact with the output reel itself.

According to a particularly preferred embodiment of the invention, the interaction range at the output reel and/or the cam disk is equipped with a friction-increasing coating, preferably a rubber coating, thereby providing an adhesive force between the cam disk and the output reel. is increased. The output reel is therefore more effectively accelerated by being wound from the propelled cam disk, especially during the pre-acceleration phase, and during each of the intermediate, third positions of the cam disk or the output reel.

According to a further embodiment of the invention, the cam area assigned to the second position of the output reel with the greatest distance to the axis is designed with a rough surface, preferably a rough surface, which causes friction in the output channel. Advantageously, the output reel in the conveying phase, which is decelerated by the non-propelled counter reel and the web material, is effectively propelled by rotating the coarse portion of the cam disc from the output reel.

In another embodiment of the invention, the output reel itself is mounted in a slotted bearing, which (from a manufacturing engineering point of view) is easily manufactured, for example by punching, and the seating of the output reel with respect to the cam disc or counter reel nevertheless This is desirable for the principle on which the present invention is based.

According to another embodiment of the invention, a spring-loaded output reel is provided in the direction of the cam disc. Therefore, the reliable functioning of the device becomes independent of installation location and operation.

According to a further advantageous embodiment of the invention, a sensor, preferably a light sensor, is provided for the length of the material after the separation device and before the output from the output channel and is connected to the control device of the device. . The channels for intermediate storage of the removed material pieces are thus controlled, so that, for example, the risk of paper jams is reduced, further printing operations are avoided in the case of functional failures, trouble indications etc. are issued by the control device. . A trouble case to be considered is indeed, for example, that the web material is still in the output channel after output processing.

According to another embodiment of the invention, the cam disc is connected via a shaft with an auxiliary cam disc, which interacts with a switch, preferably an operable microswitch, which is connected to a control device of the device. Ru.

Once the output process has been initiated, it must essentially be terminated by switching off the respective drive motor of the appropriate drive or device. To make this possible in an accurate and reproducible way, it is necessary to detect each final position, which can be done directly according to the described device by scanning an auxiliary cam disk operating simultaneously with the cam disk. done to. Thereby the auxiliary cam discs switch off the common drive at short intervals, subject to the follow-up of the drive motor, before the separating mechanism of the separating device reaches their initial position, in which an unobstructed feeding of material is possible. It is installed in such a way that it can be switched to

This auxiliary disk is thereby, according to a further preferred embodiment of the invention, adjustable in its angle of rotation with respect to the cam disk in a stepwise manner, preferably by means of notch-shaped adjustment marks. This embodiment is advantageous because the compliance of the device is primarily a function of the manufacturing tolerances of the mechanical components and the lubrication, and therefore it is conventional in each of the other devices that are equal in all other respects. However, it can be assumed that manufacturing tolerances and equipment compliance are equivalent in manufacturing cost. As a result, the costs of the entire device are adjusted equally, which is possible because the auxiliary cam discs are readjusted in a stepped manner by means of notch-shaped adjustment marks, whereby these marks indicate, for example, the assigned figure. Therefore, if the device manufactured at subsequent expense exhibits different tolerances due to gradual wear of the tools, etc., these are easily compensated for by adjusting the auxiliary cam disk to that of the next adjustment mark.

[Example] The invention will be explained in detail below by means of an example partially shown schematically in the drawing.

The device shown in FIG. 1 includes a take-up reel 1 and a separating device 3.
It is used for cutting and outputting a web material 2 on a take-up reel l of paper to be printed, for example in a printing device 4, which passes between.

After the separation device 3 (following the material flow), an output device 6
is arranged in the output channel 5, which is controlled according to the separating device 3 and can be driven by a drive motor, not shown here. This output device B has an output reel 9 that interacts with the counter surface 7 of the counter reel 8, which in the first position shown collects the as yet unseparated web material in the output channel 5 with itself. Gap 1 between counter surface 7 or counter reel 8
0 and interacts with the counter reel 8 in the second position shown in FIG. 2 to transport the already separated material 2 from the channel 5 towards the output 11.

The separating device 3 and the output device B are rigidly drive-coupled (in a manner not shown here) and propelled by a common drive motor as described above, whereby the output reel 9 is a counter reel 8 having a counter surface 7. This output reel 9 in the first position is set and not propelled away from the counter reel 8 and is located directly opposite the counter reel 8 or drive extension in the second position shown in FIG. It is pushed and propelled into section 13. Each cam disc 12 (in FIG. 3 has a drive extension 13 on each side of the output reel 9)
and a cam disc 2) according to FIGS. 1 and 2 have two cam ranges 15.18 each showing different distances relative to the axis 14, the range 15 with the smaller distance being connected to the output reel 9. range 1B with the larger distance is assigned to the second position.

In the method shown in FIG. 3, the output reel 9 is adjusted towards the counter reel 8 (cam disc 12
(affected by) is guided in slot bearings 17 at both ends.

In FIG. 1, the device is at the beginning of a separation and output cycle, whereby, for example, a printed sheet in the printing device is further shifted to a position very close to the position of the optical sensor 18 in the output channel 5.

Up to this state, the drives for the separating device 3 and the output device 6 are switched off, so that they interact in cooperation with the drive extension 13 with the first cam region 15 in the position shown in FIG. For this purpose, the output reel 9 remains set away from the counter reel 8. Therefore, the part of the material that is further shifted in the output channel 5 can be shifted further through the gap 10 without any hindrance. As soon as the predetermined end of the printing procedure is achieved, as mentioned above, the uncut portion of the material remains completely inside the output channel 5, inaccessible to the user who is outside the dust cover 19. Separation device 3
and the output device 6 is energized via a control device (not shown) of the device, and the cam disc is moved in the direction of arrow 2.
It starts rotating in the direction of 0. Due to the first cam range VE15 being arranged at a short distance to the shaft 14, the output reel initially remains in the position shown. However, the impact cutting machine 21 and the separating device 3 have a fixed cutting bar 22
Start moving towards. Each drive extension 1 of the output reel 9
The second cam region 16 interacting with the impact cutter 21
occurs at least approximately simultaneously with the final cutting of a predetermined length of material, this output reel 9 being lifted in the direction of the counter reel 8 on the one hand and driven in the direction of the arrow 23 on the other hand.

This situation is illustrated in FIG. 2, where approximately half of the second cam area has already passed through the appropriate drive extension of the output reel 9. During the interaction of the output reel 9 with the second cam region 16, the already cut piece of material is conveyed towards the output 11, whereby this cut piece can be removed from the device by the user.

According to FIG. 5, the cam disk 12 has two cam areas 1
5 and 1B, which is assigned to the third position of the output reel 9 between the first and second positions already described.
It can be seen that in this state the output reel 9 is successfully propelled but has not yet contacted the counter reel 8.

This situation is illustrated in FIG. 2, where the range 1 of the second cam
Approximately half of B is already the appropriate drive extension 1 of the output reel 9.
I'm spinning 3. During the interaction of the second cam region 16 with the output reel 9, parts of the already cut pieces of material are conveyed towards the output 11, which cut pieces are removed by the user of the device.

According to FIG. 5, in addition to the two cam ranges 15 and I6, the cam disc 12 has a third position assigned to the third position of the output reel 9 between the first and second positions already described. has an intermediate range 24 of , and this output reel 9 has been successfully propelled but has not yet touched the counter reel 8 . 1st
Regarding the function of the device explained above with reference to FIGS. Become.

From FIG. 5 it can be seen that at least one cam disc 12 has an adjusting notch for adjusting its angle of rotation with respect to the separating device with the shortest distance to the axis 14 in the cam range 15 assigned to the first position of the output reel 9. You can see what it shows. From FIG. 5 it can also be seen that the cam range I assigned to the second position of the output reel 9 with the maximum distance to the axis 14
B is designed with a coarsely knurled, here rubber-coated surface, which improves the conveying conditions by increased frictional forces. In the same way, it can also be provided that the mutual areas on the output reel 9 and/or the cam disk 12 are equipped with a friction-increasing coating, for example a rubber coating.

According to FIG. 4, a crank drive 27 in which the gear 2B is propelled by a common drive motor (not shown) for the output device 6 and the separation device 3 and is hinged at 28 to a not shown frame of the device. Then, an impact cutting machine 21 according to FIG. 1, for example, is driven. At the same time, the gear 3o is propelled by the intermediate wheel 29, which is connected via the shaft 31 with the cam disc 12. cam disc 12
cam ranges 15, 16 are again interacting with the respective drive extension 13 of the output reel 9 in the manner described above. Fourth
In the position shown in the figure, the output reel 9 is pushed onto the counter reel 8 and propelled through the second cam area 16, thus moving the already separated part of the material 2 in the direction of the arrow 32.

In FIG. 3, both side cam discs 1 on the shaft 31
2 along with its two side slot bearings 17
Only the output reel 9 is shown schematically, comprising:
Only the drive gears 29, 30 are shown on the side walls of the device or frame, respectively. As shown in Fig. 3, 2
It can be seen that the two cam disks 12 are connected to an auxiliary cam disk 34, which interacts in a manner not shown here with a microswitch 35, which is connected via a connection 36 to the control device of the entire device. This allows the internal position of the device to be precisely fixed or detected,
There or before the output device B and the separation device 3
The drive motor for must be switched off. By appropriate design or adjustment of this auxiliary cam disc 34, attention is given to the follow-up of the drive motor or the entire device in a very simple manner.

In connection with the last explanation, reference should be made, for example, to FIGS. 6 and 7, in which such an auxiliary cam disk 34 is shown. This auxiliary cam disc is crew (c
rew) shows a notch-like adjustment mark 37 allowing a stepwise variable adjustment of the angle of rotation of the auxiliary cam disk 34 with respect to the axis 31 by means of a bolt 38 and a nut 39;

Notched mNB marks 37 are located on the bottom side of the auxiliary cam disc 34 as shown in FIG. 7, and they interact with bolts 40 that push vertically through the shaft 31 or its extension, which thus allows adjustment. do. For better orientation, the second adjustment mark 41 is fixed to the appropriate side wall 33 according to FIG. By means of these last-mentioned methods, the follow-up, which is entirely dependent on manufacturing tolerances and lubrication, is precisely and evenly adjusted for the manufacturing charge.

To conclude this description, the second sensor 42 shown in FIG.
Reliably detects a paper jam or similar trouble and considers it by the control device of the connected device in a manner not described here.

[Brief explanation of the drawing]

FIG. 1 shows a partial cross-sectional view of an apparatus constructed in accordance with the present invention. FIG. 2 is a detail view of FIG. 1 in another operating state; FIG. 3 shows a schematic perspective view of a portion of another embodiment according to the invention. FIG. 4 is a partially schematic side view of another embodiment. FIG. 5 shows a top view of a cam disc for another practical application. FIG. 6 shows a top view of the auxiliary cam disc of the device according to the invention. FIG. 7 shows a sectional view of the auxiliary cam disk according to FIG. 1... Winding reel, 2... Web material, 3...
Separation device, 4... Printing device, 5... Output channel, 6... Output device, 7... Counter surface, 8... Counter reel, 9... Output reel, lO... Interval ,
11...Output, 12...Cam disc, 13...
Drive extension part, 14... Axis, 15, ia... Cam range, 17... Slot bearing, 18... Light sensor, 19... Dust cover, 21... Impact cutting machine, 22... ... fixed cutting bar, 24 ... intermediate range, 25 ... adjustment notch, 2B ... gear, 27 ...
Crank drive device, 28... at, 29... intermediate wheel, 30... gear, 31... shaft, 32
... Arrow, 33 ... Side wall, 34 ... Auxiliary cam disk, 35 ... Micro switch, 36 ... Connection part, 37 ... Notch-shaped adjustment mark, 42 ... Second sensor.

Claims (10)

[Claims] (1) A device for cutting and taking out web material on a take-up reel, especially paper printed in a printing device and passing between the take-up reel and a separation device, the output device outputting according to the flow of the material. The output reel is arranged behind the separating device in the channel and is driveable in a controlled manner according to the separating device, the output device having an output reel that interacts with the counter surface, in a first position the output reel is In a device for passing unseparated web material through a gap between a separating surface and a counter surface and interacting with the counter surface at a second location to convey already separated material toward a channel output. the output reel by one or more cam discs in which the device and the output device are drivingly coupled and propelled by a common drive motor, the output reel being positioned opposite the counter reel supporting the counter surface and drivingly coupled to the separating device; A device characterized in that the reel is set away from the output reel in a first position and does not perform propulsion, and is pushed toward a counter reel in a second position to perform propulsion. (2) the cam disc has three cam ranges around its periphery each exhibiting a different distance to the axis, the range with the smallest distance among them being assigned to the first position of the output reel;
2. An intermediate range according to claim 1, characterized in that an intermediate range is assigned to a third position between the first and second positions, such that the output reel has been successfully propelled but has not yet touched the counter reel. Device. (3) one or more cam discs are provided with adjustment notches for the adjustment of their angle of rotation with respect to the separating device, which cam range is preferably assigned to the first position of the output reel with a minimum distance to the axis; 3. Device according to claim 1, characterized in that it is arranged in a. 4. Device according to claim 1, characterized in that the interaction area at the output reel and/or the cam disk is equipped with a friction-increasing coating, preferably a rubber coating. (5) The cam area assigned to the second position of the output reel with the greatest distance to the axis is designed with a rough, preferably jagged surface. The device described. 6. Device according to claim 1, characterized in that the output reel is guided in slotted bearings. 7. Device according to claim 1, characterized in that the output reel is spring loaded in the direction towards the cam disk. (8) Behind the separation device and in front of the output of the channel, a sensor, preferably a light sensor, is provided for the length of the material section in connection with the control device of the device. 8. The device according to any one of 1 to 7. (9) Claim characterized in that the cam disk is connected by a shaft with an auxiliary cam disk, which auxiliary cam disk interacts with a switch, preferably a mechanically operable microswitch connected to the control device of the device. 9. The device according to any one of items 1 to 8. 10. Claims 1 to 9 characterized in that the auxiliary cam disk is adjustable in such a way that its angle of rotation relative to the cam disk can be varied in steps, preferably by means of notch-shaped adjustment marks. equipment.