JPH0617000B2 - Device for cutting and unloading web material on take-up reel - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting and taking out a web material supplied from a take-up reel into pieces having a predetermined length.

[Prior Art] The apparatus for cutting and taking out the web material as described above is used for an apparatus such as a recording / printing apparatus, a telex and fax mill, and a winding machine. The major problem with all of these applications is that urgent users who cannot wait for proper cutting and output of web material, or inexperienced users, can cut the web material-e.g. Paper output from a Telex printer. It is an operation error that starts a take-out operation such as tearing it off before it is done, which causes various undesired accidents such as an undesired breakage of the paper and a failure of the device due to the force applied to the paper.

With such a device accessible to such an ordinary person, in order to eliminate damage or improper use caused by acts of a hasty or inexperienced user as described above, or by incorrect operation. Devices have been developed in which the web material must be cut before it can be removed. That is, the cut material may be delivered to the outside of the device only after it has been completely separated from the rest of the web material to be accessible to the user. Is required.

An actual device of the type described above is for example US Pat.
No. 65,292, the paper is output after being cut by a knife that is moved across the paper feed direction in which the paper is conveyed from the take-up reel into the output box by the output reel after printing processing in a fax mill receiver. It is supplied in a box, where it is accessible to the operator of the device.

[Problems to be Solved by the Invention] With the apparatus as described above, the above-mentioned problems are substantially solved. However, such devices are complicated in construction and control, add cost and are not applicable if there is only a small amount of available space.

An object of the present invention is a device that does not cause an erroneous operation of ejecting a sheet before being cut as described above,
Moreover, it is an object of the present invention to provide a cutting and outputting device that has a simple structure, particularly a control mechanism, does not require a large space, and can be easily applied to various devices that are arbitrarily configured.

[Means for Solving the Problems] The present invention provides a web material supplied from a take-up reel.
A device for cutting and taking out pieces of a fixed length.
Force device cuts the web material according to the flow of the web material
Is placed behind the separating device and the output device is
The counter surface of the web and the web material
An output reel mounted on the output reel, the output reel
At the position, the output reel itself and the counter surface of the counter reel
The web material not yet separated through the gap between
And in the second position it has already been separated in collaboration with the counter surface.
So that the web material that has been
The first and second positions are movably arranged and include a separator and
And the output device are driven by a common drive motor and separated.
One or more camdies being driven in conjunction with the drive of the device
This output reel causes the output reel to
Is set apart from the tool to drive the web material.
First, the web material is sandwiched in the second position, and the counter
In the device that drives the web material when pressed against the roll
Cam disks have different radii around them.
With three cam ranges,
Position of the first cam with the smallest radius and output reel
The second radius of the maximum radius that positions the
A third cam area with an intermediate radius between the two is provided in the middle of
This third cam range is for the output reel to
Pressed against material but not yet pressed onto counter reel
The position of the output reel to a third position between the first and second positions.
Set up to drive the separated web material.
Characterize.

[Operation] In the above-described configuration, the position of the output reel is displaced between the first and second positions in conjunction with the separating device, and the separation (cutting) of the web material to the outlet is performed by a simple control mechanism. Drive can be synchronized, but if for some reason it is out of sync, the output reel will move to the second position to force the web material to a stronger position before it is cut by the separator and the web material is separated. There is a risk that the web material will be pinched and driven, and the drive force will break the web material. To avoid this it is necessary to allow sufficient time to ensure that the movement to the second position is after the separation, so that the output reel is still in the second position even though it has already been separated. There is a drawback that the operation time is wasted and the operation time becomes long without moving to the position. On the other hand, by using the cam disk having the third cam range as described above and controlling the operation so that this range is immediately before the operation of the separating device, the web material is removed before the web material is cut. Since the driving force can be applied to the web material with a weak friction force that does not break, the web material is kept stationary until the web material is cut, but immediately after it is cut, it is directed toward the outlet by the output reel. When driven, the output reel further moves to the second position at that stage to strongly pinch the web material and drive it toward the outlet with a strong force.

[Advantages of the Invention] The drive device for a web material configured to use the cam disc having the third cam range as described above has a structure that the web is cut before the web is cut by using the cam disc having the third cam range. The drive force can be applied with a weak friction force that does not break the web, so that as soon as the web is cut, it is driven by the output reel toward the outlet, saving wasted time and operating speed. It is possible to increase. Moreover, since the output reel and the counter reel do not drive the web material by strongly pressurizing it, the web material does not slip and a large tension is not applied to the web material when the web material is not cut, and the risk of breaking the web material can be avoided. it can. Therefore, precise synchronization operation is unnecessary, and stable operation can be performed even when the synchronization is deviated during operation. Further, in the state of the cut surface, a weak driving force due to a frictional force acts to pull the web material, so that the web material can be cut cleanly by the stretching action at the time of cutting.

[Advantages and effects of the structure according to claim 2 and the following] In the structure described in claim 2, at least one cam disk is provided with an adjustment notch (recess) for adjusting the position of its rotation angle with respect to the separating device. The cam range is assigned to the first position of the output reel having the smallest radius. Thus, precise control of the separation sequence and output is possible before the device is put into operation, thereby avoiding, for example, the material to be separated from being at least partially torn apart of the material.

According to a configuration as claimed in claim 3 or 4, the mutual contact surface of at least one of the output reel and the cam disc is provided with a friction-increasing coating, preferably a rubber coating, so that between the cam disc and the output reel. The transmission power of is increased. Therefore, the output reel is effectively accelerated.

According to a construction as claimed in claim 5, the shaft of the output reel is mounted in a bearing slot, which is easily manufactured, for example by punching, and which fulfills the need for the mobility of the output reel with respect to the cam disk or the counter reel. Can be made.

According to the structure described in claim 6, there is provided the output reel equipped with the spring for pressing in the direction of the cam disk. Therefore, since the output reel can be displaced by following the cam by the pressure of the spring instead of by gravity, the reliable function of the apparatus becomes independent of the installation position.

According to a configuration according to claim 7, a sensor, preferably an optical sensor, is provided at a position in front of the outlet from the rear output channel of the separating device of the web material passage, corresponding to the length of the material, and controlled. Combined with the device. The channels for the intermediate storage of the pieces of material to be removed are therefore controlled, whereby the risk of, for example, paper jams is reduced, and in the case of functional impairments of the printing process, trouble indications are issued by the control device.

In the arrangement according to claim 8, the cam disc is connected by a shaft to an auxiliary cam disc, which drives a switch, preferably an operable microswitch, which is connected to a control device. Once the output process has been initialized, it must be terminated by switching off the appropriate drive device or drive motor of the device, respectively. In order to make this possible in an accurate and reproducible way, it is necessary to detect each end position, which is done directly by utilizing an auxiliary cam disc which operates simultaneously with the cam disc. The auxiliary cam disc thereby causes the switch to drive the drive device in a short time corresponding to the operating time of the drive motor before it reaches its initial position in which the separation mechanism of the separation device allows an uninterrupted supply of material. Switch off.

According to the construction of claim 9, the auxiliary disc is adjustable in its rotational angle with respect to the cam disc in a stepwise manner, which adjustment can preferably be effected by means of a notched adjustment mark. This is useful in compensating for device compliance because it is primarily a function of manufacturing tolerances of mechanical components and lubrication. These marks show, for example, the assigned state, so that if the device later shows different errors, such as due to progressive wear, they can easily be compensated by adjusting the auxiliary cam disc to that of the next adjusting mark. .

EXAMPLE The device shown in FIG. 1 is used for cutting and outputting web material, such as paper 2 which is fed from a take-up reel 1 and printed in a printing device 4, for example. The printed sheet 2 is cut by the separating device 3 and then fed to an output device 6 arranged at a position behind the output channel 5 through which the material moves. The output device 6 is controlled in conjunction with the separating device 3 and can be driven by a drive motor not shown here. This output device 6 has an output reel 9 arranged in opposition to the counter surface 7 of a counter reel 8 with the paper 2 in between and operating in cooperation with it, in the first position shown the output channel 5 The unseparated web material therein and the counter surface 7
That is, it passes through the gap 10 between the counter reel 8 and the counter reel 8 at the second position shown in FIG.
The sheet 2 which is already separated by being sandwiched between and is conveyed from the channel 5 toward the outlet 11.

The separating device 3 and the output device 6 are combined in a manner not shown and driven by a common drive motor, the output reel 9 being arranged opposite the counter face 7 of the counter reel 8 and shown in FIG. In the first position, the output reel 9 is set at a position apart from the counter reel 8, and in the second position shown in FIG. 2, the output reel 9 is pushed so as to sandwich the paper 2 with the counter reel 8. Be promoted. The cam disk 12 is provided corresponding to the drive extension portions 13 provided on both sides of the output reel 9 as shown in FIG. 3, and acts on the extension portion 13 according to FIG. 1 and FIG. 9 has two cam ranges 15, 16 each having a different radius with respect to the axis 14 for moving 9,
The small radius range 15 is assigned to the first position of the output reel 9 and the large radius range 16 is assigned to the second position.

As shown in FIG. 3, the output reel 9 is displaced toward the counter reel 8 by the cam disk 12, and the shaft portion outside the extension portion of the both ends is the side wall 33.
It is guided in the bearing 17 provided in the.

In FIG. 1, the device is at the beginning of the separation and output cycle, for example the paper printed in the printing device is near the optical sensor 18 located near the exit in the output channel 5. Until this state, the drives for the separating device 3 and the output device 6 have been switched off and the first cam area 15 of the cam disk 12 is in contact with the drive extension 13 in the position shown in FIG. Therefore, the output reel 9 is set apart from the counter reel 8. Therefore, the part of the paper 2 which is further moved in the output channel 5 is transferred through the gap 10 without hindrance. In the state where the predetermined process of the printing procedure has just been completed, the uncut portion of the paper 2 is completely covered with the output channel 5 which is not accessible to the user from the outside of the dust cover 19 as described above. It remains inside. In this state, the drive motor common to the separating device 3 and the output device 6 is energized via a control device not shown in the device,
The cam disc begins to rotate in the direction of arrow 20. Due to the small radius first cam area 15, the output reel initially remains in the position shown in FIG. However, the impact cutting machine 21 of the separating device 3 starts to move toward the fixed cutting bar 22 and cuts the sheet 2. During this time, the cam disk 12 rotates and the cam surface contacting each drive extension portion 13 of the output reel 9 reaches the second cam range 16 just before the cam surface reaches a predetermined length of the sheet 2 by the impact cutting machine 21. The final cutting of the part is completed and the cam area 16 causes the arrow 23
The output reel 9 rotationally driven in the direction of is lifted in the direction of the counter reel 8. The output reel 9 is supported by the cam disk by gravity, but may be pressed so as to be pressed against the cam disk by a spring.

The second situation is that the output reel 9 is rotating in this way.
As shown, it has already been rotated to an angular position of about half of the second cam range 16. As the output reel 9 and the second cam area 16 are pressed against each other and rotate, the already cut piece of paper 2 is conveyed towards the outlet 11, whereby this cut piece is removed from the device by the user. Taken out.

FIG. 5 shows a detailed view of an example of the cam of the device shown in FIG. As shown in the figure, the cam disk 12 has the above-mentioned 2
In addition to the one cam area 15 and 16, a third intermediate area 24 having a radius intermediate between the two is provided. In the third cam range 24, the output reel 9 is propelled to the direction of the counter reel 8 a little more than the first cam range 15, but a gap of about the thickness of the sheet is generated between the output reel 9 and the counter reel 8 and the sheet is formed. The radius of the cam disk is selected so that the cam cannot be firmly held.

The third cam range 24 extends from the end of the first cam range 15 shown in FIG. 1 to about the first half of the second cam range 16 shown in FIG. The drive extension 13 of 9 is driven to displace the output reel 9 to a position intermediate between the first position and the second position. In this third cam range 24, the output reel 9 is moved forward by the forward movement of the output reel 9.
Since the contact pressure between the sheet and the sheet increases, the cut piece of the sheet 2 is conveyed toward the outlet 11 immediately after cutting and taken out by the user. However, since the output reel 9 is pressed against the paper 2 but is apart from the counter reel 8, the paper 2 is not firmly held between the two reels, and therefore the paper 2 is frictional force with the output reel 9. The sheet 2 is simply joined by the sheet 2 and the pulling force acts only on the sheet 2 due to the frictional force until the sheet 2 is cut, and the pulling force is not so large as to break the sheet 2. Is slipped and held in that position when not cut. At this time, since the pulling force due to the frictional force acts on the sheet 2, the sheet 2 can be cut in the pulled state. Therefore, it is possible to cut the sheet 2 with a clean cut edge.

In FIG. 5, the cam disk 12 is the first of the output reels 9.
Has a notch 25 for adjusting its rotational angle with respect to the separating device in the cam range 15 assigned to the position. The second cam area 16 with the largest radius is also designed to have a rough surface, for example a surface coated with rubber, which makes it possible to improve the transport by increasing the frictional force. Similarly, the output reel 9 can be equipped with a coating that increases friction, for example a rubber coating.

As shown in FIG. 4, a crank drive in which gear 26 is driven by a common drive motor (not shown) for output device 6 and separation device 3 and is hinged at 28 to a frame not shown of the device. Via the device 27, for example the first
The impact cutting machine 21 according to the figure is driven. At the same time, the gear wheel 30 is driven by the intermediate wheel 29, which is the shaft 31.
It is connected to the cam disk 12 via. The cam areas 15, 16 of the cam disk 12 (third cam area 24 omitted for clarity) again interact with each drive extension 13 of the output reel 9 in the manner described above. At the position shown in FIG. 4, the output reel 9 is the counter reel 8
And is driven in the second cam range 16 and thus drives the separated part of the sheet 2 in the direction of arrow 32.

In FIG. 3, both side cam disks 1 on the shaft 31
Only the output reel 9 with its two side bearing slots 17 with two arrangements is shown schematically, the side wall 33 of the device or frame only drive gears 29, 30 respectively. As shown in FIG. 3, the shaft 3 of the cam disk 12
An auxiliary cam disk 34 is connected to the extension portion of No. 1.
This auxiliary cam disk 34 actuates a microswitch 35 which is connected to the control of the entire device in a manner not shown here. This makes it possible to accurately fix or detect the internal position of the device, where or before the drive motors for the output device 6 and the separating device 3 have to be switched off. Proper design or adjustment of this auxiliary cam disc 34 makes it possible to control the drive motor or the entire device in a very simple manner.

An example of such an auxiliary cam disk 34 is shown in FIGS. 6 and 7. This auxiliary cam disc has a notch-shaped adjustment mark 37 which allows a stepwise adjustment of the rotation angle of the auxiliary cam disc 34 with respect to the shaft 31 by means of a pawl bolt 38 and a nut 39. As shown in FIG. 7, the notch-shaped adjustment mark 37 is provided on the auxiliary cam disk 3
4 on the bottom side, they interact with a bolt 40 that pushes vertically through the shaft 31 or an extension thereof, which thus allows adjustment. For the better orientation, according to FIG. 3, the second adjustment mark 41 is fixed to the appropriate side wall 33. With these last-mentioned methods, the follow-up, which depends on manufacturing tolerances and lubrication as a whole, is precisely and evenly adjusted for the manufacturing charge.

Finally, the second sensor 42 shown in FIG. 1 is located at the inlet of the output channel 5 and manages the output channel 5 with the sensor 18 to reliably detect paper jams or similar problems.

[Brief description of drawings]

FIG. 1 shows a partial cross-sectional view of a device constructed according to the invention as claimed in claim 1. FIG. 2 is a detailed view of a portion of the apparatus of FIG. 1 in another operating state. FIG. 3 shows a schematic perspective view of the output reel and cam disc portion of the device of FIG. FIG. 4 is a schematic side view of a drive mechanism for driving the output device and the separation device of the device of FIG. FIG. 5 shows a detailed view of the cam disc used in the device of FIG. FIG. 6 shows a plan view of the auxiliary cam disk. FIG. 7 shows a sectional view of the auxiliary cam disk shown in FIG. 1 ... Take-up reel, 2 ... Web material, 3 ... Separator, 6 ... Output device, 7 ... Counter surface, 8 ... Counter reel, 9 ... Output reel, 11 ... Exit, 12 ... …
Cam disc, 15 ... First cam range, 16 ... Second
Cam range, 24 ... third cam range, 18 ... sensor, 25 ... adjustment notch.

Claims (9)

[Claims] 1. A device for cutting and taking out a web material supplied from a take-up reel into pieces having a predetermined length.
The output device (6) follows the web material (2) flow
Placed behind the separating device (3) for cutting the (2), the output device
(6) is the counter reel (8) counter surface (7) and web material
The output reels (9) are arranged so as to face each other across the passage (2), and the output reels (9) are at the first position.
(9) Pass the web material (2), which has not been separated yet, through the gap between itself and the counter surface (7) of the counter reel (8), and cooperate with the counter surface (7) in the second position. Is arranged movably between the first and second positions so as to sandwich the web material (2) already separated and convey it toward the outlet (11),
The separating device (3) and the output device (6) are driven by a common drive motor, and the output reel is driven by one or more cam disks (12) which are driven in conjunction with the driving of the separating device (3).
(9) is set apart from the counter reel (8) at the first position and does not drive the web material (2), but at the second position, the web material (2) is sandwiched to the counter reel (8). In the device for pressing and driving the web material (2), the cam disk (12) is provided with three cam ranges (15,16,24) with different radii around it, and the output reel (9)
In the middle of the minimum radius first cam range (15) for locating the output reel (9) to the first position and the maximum radius second cam range (16) for locating the output reel (9) in the second position. A third cam range (24) with a radius intermediate between the two is provided.
The first cam area (24) of the output reel (9) is pressed against the web material (2) but not yet pressed against the counter reel (8).
And a second position to set the position of the output reel (9) to a third position to drive the separated web material (2). 2. An adjusting notch for adjusting the angle of rotation of one or more cam disks (12) with respect to the separating device (3).
Output reel provided with (25), which has the smallest radius
Device according to claim 1, characterized in that it is arranged in the cam range (15) corresponding to the first position of (9). 3. Device according to claim 1, characterized in that the contact surfaces of at least one of the output reel (9) and the cam disk (12) are provided with a friction-increasing coating. 4. The cam area (16) of maximum radius assigned to the second position of the output reel (9) is provided with a roughened surface. The described device. 5. The shaft of the output reel (9) is movable in the bearing slot (17).
5. The device according to any one of 4 to 4. 6. Device according to claim 1, characterized in that the output reel (9) is spring-loaded in the direction towards the cam disk (12). 7. A channel outlet (1) behind the separating device (3).
7. A sensor (18) is provided in front of 1) for detecting the length of a piece of material connected to the control device of the device. The described device. 8. A cam disc (12) is connected to an auxiliary cam disc (34) by a shaft (31), and the auxiliary cam disc (34).
8. Device according to claim 1, characterized in that it drives a switch (35). 9. The auxiliary cam disc (34) is a cam disc (12).
9. The device according to claim 1, wherein its rotation angle can be changed in steps.