DE1965299A1 - Device for winding up strip or web-shaped material using the contact roller method - Google Patents

Description

Device for winding up strip or web material using the contact roller method

B a r m a g

Barmer Maschinenfabrik Aktiengesellschaft

Headquarters Wuppertal

The invention relates to a device for winding tape or web-shaped material onto a winding core by means of a driven contact roller, against which the guided parallel to its axis is displaceable Coil can be pressed.

In such devices that work in the contact roller process, the quality of the winding depends on the Winding characteristic or the tension in the film is determined over the winding diameter, essentially from a precisely controlled pressing force with which the roll is pressed against the contact roller. Furthermore is An essential prerequisite for the performance of the devices mentioned that the winding process be easy interrupted and the roll can be ejected as soon as the desired one, which is different from case to case Winding strength is reached.

The invention is accordingly based on the object of designing a device of the type mentioned so that • on the one hand, the pressing force according to the desired winding characteristics in a simple manner, and indeed during dö3 Wickeins, can be controlled and on the other hand the winding process in any selectable

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Stage can be easily interrupted and the wrap can be ejected without manual labor.

The previously known devices are not sufficient for this task. Most devices have in common that the weight of the roll is used to apply the pressure. But after the weight of the wrap with As the winding progresses, the roll must be specially curved to prevent the increase in weight to compensate and to give the pressure force over the wrapping process a certain course. Here correspond a certain curve guide a certain initial pressure force and a certain based therefrom Course of the same over the winding diameter. Consequently the initial pressure force and its course cannot be freely selected. Rather, the known devices are on a certain winding characteristic is set.

Furthermore, in the known devices, the ejection of the roll is only possible by means of an additional device or by hand with considerable effort.

A device for winding up strip or web-shaped material is known from the USA patent specification 2,572,904, in which the pressing between the winding and the contact roller is accomplished by two hydraulic cylinders with pressure regulators. Here, the winding is fixedly mounted in the machine frame and there itself directly driven about its axis, while the non-driven contact roller is fixed to two pivotal arms which are acted upon by the fixed articulated on the machine frame and on the swivel arms hydraulic cylinders.

In the case of the known device, a constant

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pressure force can be guaranteed over the winding process. In addition is with keeping the pressure medium pressure constant given a prerequisite. However, other circumstances are opposed to this. So the pressure will vary depending on Position of the pivot arms influenced in different ways by the weight of the contact roller. Further learns the pressure force changes in that the pressure point shifts in height during the winding process.

It is already not possible to start the winding process with a constant To drive the pressing force, this applies even more to driving any other desired winding characteristic with, for example, evenly increasing or decreasing pressure.

Also with regard to the discharge of a finished lap, the known device is not sufficient for the task of the invention underlying; because unsubscribing is cumbersome and laborious. First of all, the drive elements must be uncoupled from the winding axis. Then the wrap must be from Hand or by means of a special device can be removed from its brackets.

To achieve the object, the invention relates to a device for winding up strip or web material on a winding core by means of a driven contact roller, against which the can be displaced parallel to its axis guided wraps can be pressed, and is characterized by the simultaneous application of the following measures t

a) The roll is guided with its axis on a horizontal guideway.

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b) The ends of the winding axis are between the legs of the fork-shaped upper ends of a added by a shaft firmly interconnected pivot arm pair.

c) The pair of swivel arms can be adjusted by at least one at its end on the side of the swivel arm double-acting compressed air cylinder arranged on the machine frame can be acted upon.

d) In the feed line of the one used for pressing Cylinder space is an adjustable constant pressure regulator switched on.

e) The compressed air cylinder can be switched over by means of a reversing valve.

The combination according to the invention is advantageous in several respects. The drive of the swivel arms by means of the compressed air cylinder allows it, in connection with the adjustable constant pressure regulator, with the adjustability of the cylinder at its swivel arm remote end and with the horizontal guide track the wrapping process to drive any desired winding characteristics. In particular, by means of the setting of the constant pressure regulator a certain desired base load can be specified, which is constant during winding depending on the position setting of the cylinder remains or changes in one way or another as desired. If within the scope of the invention of a horizontal Guide track is spoken of, it is understood to mean a track that runs at least approximately horizontally.

In connection with the reversing valve, the compressed air cylinder, which can be acted upon in both directions, can save an additional device or heavy physical work to discharge the lap.

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It is completely irrelevant at what stage the weaning should be carried out.

The reversing valve, a four-way two-position valve, can be designed as a manually operated valve for lower performance requirements. To achieve increased However, according to a development of the invention, it is advantageous to switch over the winding power Four-way, two-position valve in the ejection direction, automatically via indirect scanning of the roll diameter on the swivel arm by means of a limit switch or via indirect measurement of the wrapped film length by means of a electrical pulse generator and knife with contact, which are electrically coupled to the swing-out mechanism, bring about.

An additional advantageous development of the invention is that the pivoting of the empty Winding core and the separation of the film and the application of the film to the new winding core automatically are feasible. In this way, the invention enables a fully automatic workflow from the pivoting of the new winding core by winding a certain adjustable nominal length or nominal thickness of the lap to the discharge of the finished lap and the renewed pivoting of a new lap core.

In the context of the invention, two different arrangements of the compressed air cylinder are proposed. In one case, the cylinder is adjustably arranged in a fixed angular position to the horizontal guideway, with or on the swing side articulated with an in

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a sliding block added to a longitudinal backdrop of the swing arm connected is. With parallel adjustment of the compressed air cylinder to the guideway of the roll and unchanged Adjustment of the constant pressure regulator during wrapping, the pressure force remains over the entire wrapping - Process constant. Depending on whether the pressing force should increase or decrease during the winding process, the Compressed air cylinder set to a position that is inclined or raised on the side of the swing arm.

The other arrangement according to the invention provides, one end of the compressed air cylinder on the machine frame and to be attached to the swing arm with the other end. The articulation on the machine frame is height-adjustable. With this arrangement, if the constant pressure regulator setting is unchanged, the curve of the Pressure force compared to that of the corresponding positions of the cylinder according to the first-mentioned arrangement as the cylinder oscillates around its linkage on the machine frame on the side of the swing arm during winding. In the meantime are the oscillation of the cylinder and thus the change in the pressure force during the winding process for dimensions of cylinders and rockers that are within the dimensions of the known winding devices, so insignificant that they can be neglected. The second arrangement can also be done by lowering or by lifting the end of the cylinder away from the swing arm with the constant pressure regulator setting unchanged the pressing force can be reduced or increased during winding.

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Other features and advantages of the invention are two Please refer to the * examples in the drawing are shown and are described in more detail below.

Show it:

Fig. 1 A schematic plan view of the winding device designed according to the invention,

2 shows, in a circuit arrangement, the compressed air cylinder used according to the invention to act on the rockers, with a constant pressure regulator and a four-way two-position valve _r

3 shows a schematic side view of a winding device with the compressed air cylinder in a first arrangement according to the invention,

4 shows the arrangement corresponding to the arrangement according to FIG. and 5 pressure force / winding diameter diagrams,

FIG. 6 shows a side view like FIG. 2 with another arrangement of the compressed air cylinder according to the invention and

7 shows the arrangement corresponding to the arrangement according to FIG. and 8 pressure force / winding diameter diagrams.

In particular, FIGS. 1 and 3 show the basic structure of the winding device according to the invention. Of the Coil 1, which is mounted with the ends of its axis 2 on the horizontal guide track 3, is stationary against the The driven contact roller 5 mounted in the machine frame 4 is pressed on. According to the invention, this is done via the pair of rockers 6a, 6b by means of the compressed air cylinders 7a and 7b. The pair of swing arms also serves to transmit power and the parallel guidance of the roll parallel

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to its axis.

As particularly Figure 1 shows, the wings are Ca and 6b fixed at its lower end by a shaft 8 connected to one another, which in turn is rotatably mounted in the machine frame 4.

According to Figures 3 and 6, the rockers 6a and 6b formed fork-shaped at its upper end; the slot in the fork ends is used to accommodate the ends of the winding axle 2. The front leg 10 of the fork-shaped end is shorter than the rear leg 11. This Measure is used for the easy introduction of a new winding core into the fork ends and the easy deployment of the finished wraps.

The circuit of the compressed air cylinder 7a or 7b can be seen in FIG. 2: The cylinder is designed to be double-acting. It consists of the cylinder housing 12 and the stepped piston 13 with the piston rod 14, which in the present case Embodiment is directed towards the rocker 6a or 6b. The in Figure 2 the piston rod upwards Continuing dashed line indicates the stroke of the cylinder between the initial position "1" and the ejection position "0" again.

The cylinder is taken from the compressed air source 15 (usually a mains line) via a Vicr-way two-position valve 16 fed. In the valve position according to FIG. 2, the front annular cylinder space 17 is connected to compressed air, while the rear end-face cylinder space 18 is connected to the outlet. Accordingly, the Piston 13 in the ejection position.

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By moving the valve 16 into the initial pressing position (upwards in Fig. 2) the frontal cylinder space 18 is connected to the compressed air source 15, while the annular cylinder space 17 is placed at the outlet. Accordingly, the piston rod 14 moves with a new one Winding core in the direction of the contact roller, pressing it against it and keeping it pressed during the winding process .

The adjustable constant pressure regulator 20 is switched on in the feed line 19 to the end-face cylinder space. This causes the pressure in the end-face cylinder space 18 to remain constant during the entire winding process. In this sense, it balances out any network fluctuations on the one hand and the pressure increases on the other in the frontal cylinder space, which results from the displacement of the piston 13 by the growing diameter Wrap result.

Instead of the compressed air cylinder, hydraulic cylinders can also be provided, but the former have the advantage that they are readily available on one in any relevant establishment existing compressed air network can fall back, and that the compressed air when released into the atmosphere can escape. In contrast, hydraulic cylinders must have their own pump and a return line are provided.

Figures 3 and 6 show two different arrangements of the compressed air cylinder according to the invention. “In the case of the FIG. 3 shows the cylinder 7a in relation to the guideway 3 fixed. Its piston rod 14 is connected to the sliding block 21 by means of the joint 22, which in turn in the longitudinal direction of the rocker 6a

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extending gate 23 of the rocker is performed. On the side of the swing arm the cylinder is in the respectively set fixed position relative to the guideway by means of its lugs 26 and 27 are connected to the machine frame 4. In the fully drawn-out illustration (position I), the cylinder 7a is directed parallel to the guideway 3. In this case remain during the pivoting of the rocker 6a of the The force arm and the load arm are constant, so that while the pressure in the cylinder is kept constant at the same time, the pressure force is also applied remains constant during the entire wrapping process.

The associated pressure force / winding diameter diagram (P / D) can be seen from FIG. With the dashed lines next to the full curve in this diagram further curves are indicated that by setting the constant pressure regulator 20 accordingly can be operated with the constant pressure required in each case.

The cylinder 7a can be set in various angular positions relative to the guide track 3 on the machine frame 4 will. This is indicated by the dash-dotted representations II and III. While swinging the swing arm 6a the force arm and load arm no longer remain constant. Rather, in the case of position II, it increases when pivoting the swing arm 6a to the left of the load arm, while the force arm increases to the same extent. At position III it's the other way around. Here, when pivoting the rocker 6a to the left, the power arm decreases, while in the same Dimensions of the load arm increases. The associated diagrams can be seen from FIG. Again, they are correspondingly different Setting the constant pressure regulator for each position II or III, for example three at a time

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Curves drawn. Position II of cylinder 7a corresponds to a linear increase in pressure during winding, In contrast, in position III there is a linear drop in the pressure force during the winding process.

A simplified arrangement of the cylinder 7a according to the invention is shown in FIG. In this case it is the cylinder with its swing-away end 24 on the machine frame and with its swing-side end at 25 firmly hinged to the rocker 6a. In the full representation of the cylinder 7a takes in the Starting winding position a position slightly inclined towards the rocker relative to the horizontal guideway 3. During the pivoting of the rocker 6a to the left associated with the winding, the cylinder 7a pivots with its swing-side end upwards first and then downwards again in a second phase. This results in the diagram according to FIG. 7, from which it can be seen that the pressing force initially increases slightly and then drops slightly again in the second phase of the winding process. The course of the pressing force / Winding diameter curve in Figure 7 corresponds to a winding device in which the dimensions of the rocker 6a and the cylinder 7a are held so that they correspond to the dimensions of the known winding devices and are therefore adapted to these. It thus turns out that the simplified arrangement of the cylinder 7a in FIG compared to that according to FIG. 3 leads to a pressure force curve over the winding diameter which is only slightly differs from that of FIG. 4 in accordance with position I in FIG. This deviation is in operation easily negligible.

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As with the arrangement according to FIG. 3, the simplified arrangement of the cylinder 7a according to FIG the height of the cylinder at its end remote from the swing on the machine frame 4 is adjustable. Of the raised position II corresponds to curve II, the lowered position III to curve III in FIG FIG. 8. Apart from a slight curvature, the course of the curve agrees with the corresponding in each case Fig. 5 corresponds.

The device according to the invention for winding up strip-shaped material in the contact roller method is permitted it is possible to drive any winding characteristic. It is possible to increase the pressure in the frontal cylinder space 18, which is used to change the pressure even during the winding process itself in steps or continuously.

The finished lap can advantageously be discharged with the cylinder 7a. There will be an additional Discharge device or the expenditure of heavy physical work saved. The event can take place in any Stage of the wrap to be made.

According to the invention it is possible to let the entire winding process run automatically. To this end can the lap ejection is controlled automatically by the reversing valve 16 of the compressed air cylinder it is switched to eject when a desired winding length or winding thickness is reached. That can done by the switching valve by means of indirect scanning of the winding diameter on the swivel arm a limit switch or via indirect measurement of the wrapped film length by means of an electrical pulse generator and knife with contact, which is connected to the Au3 swivel mechanism are electrically coupled, affects ι

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In a corresponding manner, the swiveling in of the empty winding core and the subsequent separation of the Foil and the application of the foil to the new winding core are fully automatic.

The film to be wound up is denoted by 28. In the exemplary embodiment, it is fed in from below. She got after a partial looping of the contact roller 5 onto the roll 1.

Depending on requirements, the arrangement of just one cylinder on one rocker can suffice, with the other The swing arm is taken along by the shaft. For larger systems, it is advisable because of the otherwise too large Torsional load on the shaft 8 to assign each rocker its own swivel cylinder.

As can be seen 3 and 6 readily FIGS., The imaginary central axes of the contact roll 5 and winding 1 are located in a horizontal plane, which in turn, as seen in the displacement direction of the roll 1, that is parallel to the horizontal guide track 3. This advantageously ensures that the pressing force maintains a certain horizontal line of action during the entire winding process. A change in the pressing force due to excessive migration of the contact line is thus avoided.

Claims (6)

Patent Claims ^Bag * ί / Device for winding tape or web-shaped Material on a winding core by means of a driven contact roller against which the parallel to his Axis slidably guided winding can be pressed, characterized by the simultaneous application of the following Measures: a) the roll (1) is with its axis (2) on a horizontal guide track (3) guided. b) The ends of the winding axis (2) are between the legs (10 and 11) of the fork-shaped upper ends of one firmly connected to one another by a light (8) Swivel arm pair (6a, 6b) added. c) The pair of swivel arms (6a, 6b) is min-. at least one on its swing arm term end adjustable on the machine frame (4) arranged double-acting compressed air cylinder (7a or 7b) can be acted upon d) into the feed line (19) of the cylinder space (18) used for pressing an adjustable constant pressure regulator (20) " switched on. e) The compressed air cylinder (7a or 7b) can be switched over by means of a reversing valve (16). · 2) Device according to claim 1, characterized in that the reversing valve (16) in the winding ejection direction automatically via indirect scanning of the winding diameter on the rocker (6a or 6b) by means of a limit switch or via indirect measurement of the wound film length by means of an electrical pulse - is 4965299 _Bag . 692 encoder and knife with 'contact, the rait the swing out mechanism are electrically coupled, is switchable. 3) Device according to claims 1 and 2, characterized in that that the pivoting of the empty winding core and the separation of the film and the application the new VJickelkern can be carried out automatically. 4) Device according to one or more of the preceding Claims, characterized in that the compressed air cylinder (7a or 7b) is adjustable in a fixed Angular position to the horizontal guide track (3) of the roll (1) is arranged, the swing side articulated with a sliding block (21) received in a longitudinal link (23) of the rocker (6a or Cb) connected is. 5) Device according to one or more of the claims 1 to 3, characterized in that one end of the compressed air cylinder (7a or 7b) is adjustable in height is firmly hinged to the machine frame and at its other end to the rocker (6a or 6b). 6) Device according to claim 1, characterized in that the knee-side leg (10) of the fork-shaped upper ends of the pair of swivel arms (6a, 6b) is shorter than the other leg (11), in such a way that that the pair of swivel arms in the area of the • Catch position of the new winding core laid out ready for use is pivotable. BATH ORIGINAL 109828/1071 - ♦ · Blank page