JPS6347092A - Device for spirally tearing continuous tubular film of thermoplastic synthetic material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for helically tearing continuous tubular films of thermoplastic synthetic materials, preferably for the production of webs of flat stretched films with biaxial molecular orientation. an apparatus for use, comprising: means for cylindrically expanding a moving portion of a continuously advancing tubular film; a means for advancing the expanded portion of the tubular film; and a means for advancing the expanded portion of the tubular film; a cutter for tearing along a helix; means for pulling a flat continuous film formed by tearing from an unrolled portion of the tubular film; and a winder for winding a continuous film.

A device of this type for helically tearing a stretched continuous tubular film of thermoplastic synthetic material, such as in the production of laminates having intersecting layers, is disclosed in Canadian Patent Specification 4:782;
5 (No. 18 and German patent specification old copy 1, (107, 5 (
Known by No. 10.

The object of the present invention is to transfer a stretched and flattened continuous tubular film of thermoplastic synthetic material to a feed roll consisting of a flat continuous film separated along a helix from the continuous tubular film. The objective is to provide equipment that can be converted at production speeds.

In a device of the initially mentioned type, this purpose is achieved according to the invention by providing that a pair of feed rollers for feeding the flattened continuous tubular film are mounted at fixed locations in the main frame and are operatively connected to a rotary drive. A rotating frame or mounting plate or other rotating support connected to the main frame or the like is rotatably mounted on the main frame or the like, and spaced apart, such as low-friction bars, constituting a row concentric with the axis of rotation of the rotating support. a support mandrel consisting of a support element separated by a support mandrel, a cutter fixed to the support mandrel or to the rotating support and adapted to tear the tubular film in the area where the film moves against the support element; The axis of rotation of the rotary support is aligned with the nip between a pair of feed rollers and extends through said nip approximately midway through the length of said nip, and comprises at least one deflection body and one deflection or guide roller; two turning bodies are connected non-rotationally to the rotating support and are contacted by a flat continuous film moving into a winder, the winding axis of the winder being axially aligned with or perpendicular to the axis of rotation of the rotating support; This is achieved by means of a device for helically tearing a continuous tubular film of thermoplastic synthetic material, which is characterized by a cross-section.

In the device according to the invention, a flat continuous film helically torn from a cylindrically expanded continuous tubular film can be wound up to form a supply roll in a convenient manner and at high production rates.

The expanded portion of the continuous tubular film is pulled axially onto the receiving end of a backing mandrel and the expanded tubular film is cut by a cutter suitably moved in the cutting direction to contact the expanded tubular film. It is torn apart along a spiral to form a flat continuous film. The cutter is supported on a support mandrel that rotates during the cutting operation relative to an expanded portion of the tubular film that is pulled axially onto the support mandrel.

To minimize friction between the expanded tubular film and the support mandrel, the support mandrel consists of a rod-like support element having a low-friction surface. Friction can be further reduced by providing an air blast nozzle for emitting a friction-reducing air blast around the support mandrel, in particular on its support element.

By means of two deflecting bodies connected non-rotationally to a rotating support, or by means of one deflecting body and one deflecting roller, the continuous film separated helically from the tubular film is successfully guided into the winder. be done. A cylindrically expanded tubular film section is received and rotated by a support mandrel.

The support mandrel can be rotated at high speeds,
The reason is that the winder's winding axis coincides with the rotational axis of the support mandrel, so that the centrifugal force due to the rotation of the non-rotationally coupled winder does not cause any substantial rotational imbalance even when the winder rotates at high speed. Because it doesn't cause it. If the axis of rotation of the rotating support intersects the winding axis of the winder, the winder must be non-rotatably connected to the rotating support. If the winding axis of the winding means is axially aligned with the axis of rotation of the rotating support, there is no need to rotate the winder about the transverse axis.

For satisfactory operation of the device, the tubular film must be unfolded without the formation of wrinkles or creases, and the unfolded continuous moving part must be torn in a spiral without twisting. For this reason, the means for spreading the tubular film are mounted in the main frame and directed towards the nip so as to constitute a wedge-shaped row symmetrical to the mid-plane of the nip between the pair of feed rollers. comprising mutually tapering support plates, the air blast tube is fixed to the rotating support, a support element of a support mandrel surrounds the air blast tube, and the air blast tube tube preferably projects beyond the support element; It is also contemplated within the scope of the present invention to be in communication with a fan mounted on the rotating support. The air blast supplied by the air blast tube is directed into the space between the support plates so as to cylindrically expand the continuous tubular film leaving the support plates. By means of a means for tensioning the flat continuous film formed by tearing, the expanded portion of the tubular film is drawn onto a support mandrel consisting of a low friction bar or the like. At the same time, the support mandrel rotates relative to the expanded portion of the tubular film as the expanded portion of the tubular film axially approaches the receiving end of the support mandrel.

Suitably, the axis of the air blast tube is aligned with the axis of rotation of the rotating support.

In order to be able to quickly adapt this device to tubular films of different diameters, it is also within the scope of the invention that the low friction rods are mounted on a rotating support such that they can be expanded and retracted by the same amount in the radial direction. is intended.

If the cutter consisted of a disk driven by a motor, the production rate of the device would be further increased. Suitably, the holder of the cutter is fixed to one of the support elements of the support mandrel so that the cutter can be moved radially together with the support element.

The winder is mounted on a rotating frame included in the rotating support, and the winder preferably has a winding axis perpendicular to the axis of rotation of the rotating support.

Preferably, the rotating support supports a pair of draw rollers for drawing the flat continuous film from the support mandrel, the axis of the draw rollers being parallel to the winding axis. If the flat continuous film is stretched by means of driving a winding shaft supporting the supply roll being wound, the flat continuous film may be subjected to excessive tension as it is wound.

It is also within the scope of the invention that an oblique downward deflection roller and an oblique upward deflection bar are arranged between the cutter and the withdrawal roller, and the flat continuous film is moved to the withdrawal roller in contact with said downward deflection roller and said upward deflection bar. intended within. The turning rod and deflection rollers ensure that the drawn flat continuous film is subjected to t tension and does not come loose when moving to the winder. A pull-off roller preceding the winder ensures that the flat continuous film is flat when it is transferred to the winder under the desired tension and at right angles to the winding axis. The function of the deflection rod and the function of the deflection roller is itself covered by German Patent Specification Section 4 1.9.
No. 4.8935. A rotating deflection roller ensures that the center line of the incoming part of the film web and the center line of the outgoing part are in one plane.
Film web orientation can be changed. By means of a non-rotating deflection bar provided with an anti-friction coating, said centerline is adjusted such that the centerline of the incoming part of the film web and the centerline of the outgoing part are equal and diagonal to the axis of the deflection bar. The direction can be changed angularly.

It is also contemplated within the scope of the invention to provide two diagonal deflection bars between the cutter and the pull-off roller.

In order to be able to adjust the diameter of the support mandrel consisting of the support element in a quick and easy way, the upper and lower parts of the support element of the support mandrel are arranged in a central arrangement, preferably consisting of an air blast tube, by means of links constituting toggle joints. an upper link connected to the carrier and connected to the support element extends longitudinally beyond the hinge of the toggle joint;
The elongated inner end of the upper link is pivotally connected to a sliding ring, the sliding ring being slidably mounted to and fixed in place to a centrally disposed carrier, each of which It is also contemplated within the scope of the invention that corresponding hinges between the links of the upper part and the links of the lower part of the support element are interconnected by restraining rods.

If the diameter of the support mandrel is to be varied in order to adapt to different diameters of the expanded sections of the continuous tubular film to be torn, at least one deflection rod and an optional deflection roller are arranged relative to the axis of rotation of the rotating support. must be adjusted radially and axially. For this reason, it also lies within the scope of the invention for at least one deflection rod and any deflection rollers to be mounted on a displaceable frame that can be displaced radially along a track provided on the rotating support. is intended. In such an arrangement, one deflection rod may be mounted on a displaceable frame and displaceable along a trajectory parallel to the axis of the rotary support. The cutter is also preferably guided such that it can be displaced in a direction parallel to the axis of rotation of the rotary support.

The movement for adjusting at least one deflection bar and optionally the cutter holder is transmitted by means of a linkage, a rack and pinion mechanism and/or a rope pulley and a rope or similar means thereof, and is transferred to a central carrier. It may be extracted from the movement of the sliding ring along.

The rotating support also includes a mounting plate non-rotationally connected to the free end of the cage-like rotating frame, the rotating frame surrounding the support element of the support mandrel and having a rotating ring for rotation about a horizontal axis. A part of the mounting plate, which is attached to the main frame via the mounting plate and which is arranged on the side of the mounting plate opposite to the support element of the support mandrel, is connected to the frame or carrier of the winder, and at one end of said frame or carrier of the winder, a stand is attached. It is also within the scope of the invention to provide a stub shaft rotatably mounted on the gear motor and non-rotatably connected to the gear motor.

In a different embodiment of the invention, the rotating support comprises a mounting plate supported by a cage-like rotating frame, said rotating frame surrounding the support element of the support mandrel and via two spaced apart rotating rings. mounted for rotation about a horizontal axis on a main frame, said rotating frame operatively connected to a rotational drive, and a winding shaft having an axis axially aligned with the axis of rotation of the rotating support;
The winding shaft is rotatably mounted on the frame on the side of the mounting plate opposite the support element of the support mandrel. If the winding shaft is adapted to be disengaged from an associated drive fixed to the main frame, and if said winding shaft is rotatably mounted on a laterally movable carriage, then the fully wound film It is easy to remove the supply roll from the winder.

The drive of the winder preferably consists of a motor with a rotating magnetic field, so that the flat continuous film can always be wound with a predetermined tension without the need for special speed control devices.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 illustrates unwinding a continuous tubular film from a supply roll, stretching the unrolled tubular film, heat setting the stretched tubular film, expanding the flat tubular film into a cylindrical shape, and subsequently forming a spiral. tear to form a flat continuous film, then wind this flat continuous film,
Showing the plant.

A flattened continuous tubular film 3 is attached to a wheeled frame 1
The paper is unwound from a supply roll 2 which is rotatably attached to the machine. This tubular film is stretched by the stretching roller 4 of the stretching device.
It is stretched by a known method between. Next, the stretched tubular film is brought into contact with a heating roller 5 and heat set. When the tubular film 3 is stretched and heat set,
The tubular film 3 moves to the nip between the pair of feed rollers 7 while contacting the guide roller 6. These feed rollers 7 are rotatably mounted on the upper end of the tower frame 8 and are operatively connected to a rotational drive. Behind the feed roller ruff, support plates 9.10 are mounted on the tower-like frame 8, these support plates 9.10 forming a wedge-shaped row with a central plane coinciding with the central plane of the nip between the feed rollers 7. and are tapered toward the nip between the feed rollers 7.

A rotating frame 12 is arranged below the support plate 9.10,
It is rotatably mounted on the stand 11.

This rotating frame 12 is operatively connected to a rotary drive and is rotatable about a vertical axis located in the midplane of the nip between the feed rollers 7 and subtending the length of said nip.

The rotating frame 12 is non-rotatably connected at its upper end to a centrally disposed mounting plate 13. The support mandrel 15 is made up of equally spaced low-friction rods 14, which constitute an array parallel to and centered on the axis of rotation of the rotating frame 12.

On one of the low-friction rods 14 is fixed the carrier of a motor 18, the shaft of which is fixed with a circular cutter 20, the circular force hook 20 is arranged so that the tubular film 3 is spread between the supporting plates 9.10. This serves to tear the continuous tubular film 3 between the two low friction rods 14 of the support mandrel 15 when the cylindrical tubular portion 21 is formed. By tearing, a flat continuous film 21 is formed, which has a biaxial orientation depending on the tear angle. This flat film 21 is pulled out by a pair of pull-off rollers 22 arranged below the passage grooves of the mounting plate 13. The flat film 21 is drawn off by a draw-off roller 22 from the support mandrel 15 through the channel groove, around the deflection roller 23 and the turning frame 24, aligned with the winding core of the winder 25 and delivered to said core. It is wound onto a core to form a supply roll 26. Winder 25 is non-rotationally coupled to rotating frame 12 and operatively coupled to a drive (not shown) which is also non-rotationally coupled to rotating frame 12 .

The winding axis of the winder 25 extends perpendicularly to the rotational axis of the mounting plate 13 and intersects with the axis. To facilitate the removal of the fully wound supply roll 26 from the winder 25, the winder 25 is pivotally mounted to a turntable 29, which supports the winding shaft or core and forms the base of the rotating frame 12. A rotatable carrier 28 is provided.

The centrally located carrier includes an air blast tube 30 secured to the mounting plate 13, the air blast tube 30 having an axis axially aligned with the axis of rotation of the rotating frame 12 and the support mandrel 15. The air blast tube 30 is provided with a connecting pipe at its lower end, into which the outlet of the supply conduit coming from the fan 32 is fitted, and the outlet of the supply conduit coming from the fan 32 is fitted.
2 is also fixed to the mounting plate 13 and driven by a motor 31.

FIG. 3 is a schematic enlarged plan view showing the deflecting roller 23 and turning frame 24 as seen in the direction of arrow II [-I in FIG. 1.

In FIG. 3, the width Bl+nax is equal to the girth (circumference) of the widest continuous tubular film to be processed, ie the width of the flat continuous film obtained when the tubular film is torn in the axial direction.

The width B1m1n is equal to the width of the flat continuous film obtained when a continuous tubular film with the intended minimum diameter Dmin is axially torn.

The tear cutter 20 is arranged at an acute angle α to the axis of the tubular film.
It extends to For this reason, when the tubular film with the largest diameter and the tubular film with the smallest diameter are torn, respectively, flat films with smaller widths 132max and B2m1n are obtained, respectively.

From the tearing cutter 20, the flat continuous film moves around a deflecting roller 23 which makes a cutting angle α with the axis of rotation 36. The flat film moves from the deflection roller 23 around the deflection frame 24 to the draw-off roller 22.

Since the deflection frame 24 forms only an angle α/2 with the axis of rotation 36, the flat film 21 close to the draw-off rollers 22 is aligned with the nip between said rollers 22.

It is clear from FIG. 3 that in order to change the diameter of the tubular film from Dmax to Dmin, the deflection frame 24 must be displaced axially by a distance H2. Further, the deflection roller 23 and the turning frame 24 are attached to the support mandrel 1.
It must also be displaced radially to an extent corresponding to the change in diameter of 5.

FIG. 4 shows the deflection roller 23 relative to the support mandrel 15.
and the radial position of the turning frame 24 are shown in the plan view. The deflection roller 23 and the turning frame 24 are movably mounted on a displaceable frame 37 mounted on a mounting plate 33 , on which the support mandrel 15 is mounted.
can be displaced radially relative to the

FIG. 5 is an enlarged view showing the mounting of the carrier 38 of the motor 18 for driving the cutter 20.

An angle bracket 39 is fixed to the carrier 38 and movably attached to one of the low-friction rods 14 via a slidable ring whose height is adjustable according to changes in the diameter of the support mandrel 15; It can be fixed in place on the rod 14.

As is clear from FIG. 6, the low-friction rod 14 consists of box-shaped sections, and compressed air is supplied to the inside of each of the frames. The low friction rod 14 has a bore 40 on its radially outer surface which defines an airplast nozzle for reducing friction.

In FIG. 7, the radially outermost position of the low friction rod 14 is shown by a solid line, and the radially innermost position is shown by a dotted line 14'.

Each low friction rod 14 has links 44.44' and 48.48'
can be moved between the innermost and outermost positions by the pair. Links 44,44' are connected by hinges 45 to form a toggle joint. Link 4
4.44' each has an outer end pivoted to the top of each low friction rod 14 and an inner end pivoted to the centrally located air blast tube 30. The link 44 is extended in length beyond the hinge 45, and the inner end of the link 44 is a slidable link.
It is pivoted to 47. The lower portion of each low friction rod 14 is similarly connected to a centrally located air blast tube 30 by a link 48,48' forming a toggle joint. Each hinge 49 of the lower toggle joint is connected by a restraining rod 50 to a corresponding hinge 50 of the upper toggle joint.

For this mechanism, the low friction rod can be attached to the air blast tube 30 by simply moving the slidable ring 47 axially and fixing it in the desired position in the air blast tube 30 by means of a set screw.
It can be adjusted radially relative to zero.

When adjusting the low friction rod 14 in the radial direction, the height of the turning frame 24 must be adjusted to a degree corresponding to the adjustment. To be able to make this adjustment, the deflection frame 24 passes through a low-friction bushing 52.53 mounted on the vertical bar 54 of the displaceable frame 37.
guided in the axial direction by For this displacement, the low-friction bushing is connected to a lever 55 which can be moved up and down under the control of a rope 56 wound around a rope drum 58. The drum 58 is rotatably mounted on a horizontal shaft fixed to the centrally located air blast tube 30. The means for driving the rope drum 58 comprises a gear wheel fixed to the drum 58 and meshing with a rack 59, which rack 59 is connected to one of the low friction rods 14. The adjustment mechanism is designed such that by changing the low-friction rod from its outermost position to its innermost position, the turning frame 24 can be lifted a distance H2 from the position shown in solid lines to the position 24' shown in dotted lines.

The inwardly projecting end of the lever 55 is connected by a tension spring to a portion of the lever 48 which is pivotally connected to the low friction rod 14. This tension spring tends to pull the deflection frame 24 into its lower position.

The embodiment shown in FIG. 8 has two deflection frames 60, 61. To displace the low-friction rod 14 from its outermost position to its innermost position, the lower deflection frame 60 must be radially displaced and axially raised by a distance H2 to the position 60' shown in dotted lines. This is particularly clear from FIG. 9, which shows the turning frame of FIG. 8 in plan view. Third
It is also clear from FIG. 9 how the arrangement changes when the diameter of the tubular film is changed from the largest possible diameter to the smallest possible diameter, in a similar way to the figure.

The embodiment shown in FIG. 8 also includes a tension spring which tends to hold the deflection frame 60 in its lower position.

FIG. 10 is a plan view showing the embodiment of FIG. 8. 8th
In the embodiment shown, the circular cutter 20 can also be displaced axially. For this reason, a track 65 is additionally provided, which passes through a low-friction bushing 66 which is fixed to the carrier 39' supporting the base plate of the motor 18. To adjust the height of the motor, a rope drum 67 smaller than the rope drum 58' is provided, which rope drum 67 is coaxial with and non-rotationally connected to the rope drum 58'. ing.

A rope 68 for raising and lowering the cutting device 18.20 is wound onto a smaller rope drum 67 and a deflection pulley 6 rotatably mounted on a centrally located air blast tube.
It extends around 9.

In the embodiment shown in Figure 12, a centrally located mounting plate 70 is mounted for rotation about a horizontal axis, so that the entire device has a horizontal orientation. Rods 71 with parallel axes are connected to the mounting plate 70 and these rods 7
1 constitutes a cage surrounding a support mandrel 15 consisting of a low-friction rod 14. The rod 71 has a ring 72 at its outer end.
The ring 72 is rotatably attached to a ring 73 via a ball bearing, and the ring 73 is fixed to a main frame 74.

The mounting plate 70 is connected at its rear to the rotating frame 76,
The rotating frame 76 is provided at its rear end with a stub shaft rotatably attached to the main frame 77 and driven by a gear motor. A winder and associated drive are mounted on rotating frame 76. A completely round supply roll 78 of flat continuous film can be lifted from the winder by a crane 79 when the winder is properly aligned.

In the embodiment shown in FIG. 14, the support mandrel 15 is connected at its forward end to a mounting plate 80 and is attached to the main frame 81 via two ring assemblies 82, 83, while the support mandrel 15 is protrudes freely into

The inner ring of each ring assembly 82,83 is secured to an associated support cage 84. Two cages 84 are non-rotatably connected to mounting plate 80. The inner ring of ring assembly 82 includes a gear (not shown) that meshes with a motor-driven pinion for driving support mandrel 15 and mounting plate 80. The turning frames 85, 86 are connected to the mounting plate 80 and project rearward from the mounting plate 80. A flat continuous film 87 obtained by tearing a continuous tubular film into a spiral shape is
The turning frame 85, 86 is pulled out by a pair of pull-out rollers 88.
and then fed into winder 89 where it is wound up to form feed roll 90.

Figures 14 and 15 illustrate the helical tearing of a continuous tubular film with the intended minimum diameter. When tearing a continuous tubular film of the intended maximum diameter, the supply roll has a width indicated by dotted line 90'.

The winding shaft 92 is rotatably attached to only one end of the truck 93 via a journal, and this journal is non-rotatably connected to the output shaft of a motor or gear motor attached to a stand 95 by a clutch 94. It has become.

Disengaging the clutch 94 allows the carriage 93 to be moved away from the device and thus the supply roll can be removed.

In the embodiment shown in FIGS. 14 and 15, the winding shaft 9
2 is axially aligned with the rotational axis of the support mandrel 15, the winding shaft only needs to carry out a winding movement, and there is no need to rotate the winding shaft about the transverse axis.

How a flat continuous film is passed from tearing cutter 20 around first deflection bar 85 and second deflection bar 86 and between pull-off rollers 88 onto a winding core or being formed. It is clear from FIG. 16 whether it moves onto the supply roll.

The rotating support is provided with a counterweight 98 on the opposite side of the deflection frame for compensating the rotational unbalance due to the deflection frame.

The exemplary embodiment shown in FIG. 17 comprises two tearing cutters 20, 20' arranged one behind the other in the axial direction,
These cutters 20, 20' split the continuous tubular film into two parallel flat continuous films. The flat first continuous film passes around a system 99 of deflecting frames and withdrawal rollers and is transferred to the associated winding core. The flat second continuous film passes through system 1 (10) of deflection frame and withdrawal rollers to the second continuous film.
Move to Winder. The second winder has a winding axis that is axially aligned with the winding axis formed by the first winder. Both of these winding axes are axially aligned with the rotational axis of the support mandrel 15.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing a first embodiment of an apparatus for helically tearing a continuous tubular film and a stretching device preceding the apparatus. FIG. 2 is an enlarged view of the disk constituting the tearing cutter of the device of FIG. FIG. 3 is a schematic diagram showing deflection rollers and deflection bars for guiding the flat continuous film exiting the tearing cutter of the apparatus shown in FIG. 1; 4 is a plan view showing the device of FIG. Figure 1
Figure 2 is a view similar to the figure, showing the device with support mandrels adjusted to different diameters; FIG. 8 is a view similar to FIG. 7, showing an embodiment with two deflection rods. FIG. 9 is a schematic diagram showing the path of a flat continuous film formed by tearing as it moves around two turning bars in the apparatus shown in FIG. 8; FIG. 10 is an enlarged plan view of the apparatus of FIG. 8. FIG. 11 is a plan view of the cutter of the device of FIG. 8; Figure 12 shows the third part of the device in which the mounting plate has a horizontal axis of rotation.
It is a side view showing an embodiment. FIG. 13 is an enlarged cross-sectional view showing means for rotatably mounting the support mandrel of FIG. 12; FIG. 14 is a schematic side view of another embodiment of a horizontal apparatus for helically tearing a continuous tubular film. FIG. 15 is a plan view showing the apparatus of FIG. 14. FIG. 16 is a front view of the apparatus of FIGS. 14 and 15. FIG. 17 shows a variant device with two winding stations and two cutters arranged one behind the other and with axially aligned winding axes. 7...Feed roller, 76...Rotating frame, 70...Mounting plate, 15...
Support mandrel, 14...Support element (low friction rod), 20...Cutter, 12...
Rotating frame, 23...Deflection roller, 33...
... Mounting plate, 24 ... Turning rod, 25
...Winder, 9.10...Support plate, 30...Air blast tube, 32...Fan, 18...Motor, 22・・・・・・
・Pull-out roller, 45...Hinge, 44.44', 48.48'...Link, 5
0...Restraint rod. 1. Indication of the case Patent Application No. 91837 of 1988 3. Relationship with the case of the person making the amendment Applicant name (Name) Windmehrer Land Herschel 4
, agent

Claims (19)

[Claims] (1) Apparatus for helically tearing a continuous tubular film of thermoplastic synthetic material, preferably for producing a web of flat stretched film with biaxial molecular orientation, the tubular film advancing continuously; means for expanding the moving portion of the tubular film into a cylindrical shape; means for advancing the expanded portion of the tubular film; a cutter for tearing the expanded portion of the tubular film along a spiral; In an apparatus comprising: means for drawing a flat continuous film formed by tearing it from the unrolled portion; and a winder for winding the flat continuous film leaving the cutter to form a supply roll. A pair of feed rollers for feeding the flattened continuous tubular film are mounted at fixed locations within the main frame, and a rotating frame or mounting plate or other rotating support operatively connected to a rotary drive is mounted in the main frame. The cutter supports a support mandrel rotatably mounted on a frame or the like and consisting of spaced apart support elements such as low friction rods in a row concentric with the axis of rotation of the rotating support; fixed to a support mandrel or rotating support and adapted to tear the tubular film in the area where the film moves against the support element, the axis of rotation of the rotating support being aligned with the nip between the pair of feed rollers; and extending through the nip approximately in the middle of the length of the nip, at least one turning rod and one deflection roller or guide roller, or two turning rods, are non-rotationally connected to the rotating support and for movement into the winder. continuous tubular film of thermoplastic synthetic material, characterized in that the winder's winding axis is axially aligned with or perpendicularly intersecting the rotational axis of the rotating support; A device for tearing into spirals. (2) means for spreading the tubular film are mounted within the main frame and include a support plate tapering towards the nip so as to define a wedge-shaped row symmetrical to the midplane of the nip between the pair of feed rollers; an air blast tube is fixed to the rotating support, a support element of a support mandrel surrounds the air blast tube, the air blast tube preferably projects beyond the support element and a fan is attached to the rotating support. A device according to claim 1, characterized in that it is in communication with the device. (3) An apparatus according to claim 2, characterized in that the axis of the air blast tube is aligned with the axis of rotation of the rotating support. (4) The device according to claim 1, wherein the low-friction rod is attached to the rotating support so that it can expand and contract by the same amount in the radial direction. (5) The device according to claim (1), wherein the cutter comprises a disc driven by a motor. (6) a cutter is attached to one of the support elements of the support mandrel, and during cutting engagement with the expanded portion of the continuous tubular film, the cutter extends at an angle corresponding to the desired helical cutting approach angle; The device according to claim (1), characterized in that: (7) The winder is attached to a rotating frame included in the rotating support, and the winder has a winding axis perpendicular to the rotational axis of the rotating support. equipment. (8) A patent claim characterized in that the rotating support supports a pair of drawing rollers for drawing the flat continuous film from the supporting mandrel, the axis of the drawing rollers being parallel to the winding axis defined by the winder. Apparatus according to scope (1). (9) An oblique downward deflection roller and an oblique upward deflection bar are disposed between the cutter and the pull-out roller, and the flat continuous film is moved to the draw-out roller while contacting the downward deflection roller and the upward deflection bar. An apparatus according to claim (1). (10) The device according to claim (1), characterized in that two diagonal turning bars are provided between the cutter and the pull-out roller. (11) The upper and lower parts of the support element of the support mandrel are connected to a centrally arranged carrier, preferably consisting of an air blast tube, by links forming a toggle joint, the upper link connected to the support element being a toggle joint. extending longitudinally beyond the hinge of the upper link, the extended inner end of the upper link being pivotally connected to a sliding ring, the sliding ring being slidably attached to and attached to a centrally disposed carrier. fixed in position, characterized in that corresponding hinges between the links of the upper part and the links of the lower part of each support element are interconnected by restraining rods. Range number (
The device described in item 1). (12) At least one deflection rod and the optional deflection roller are mounted on a displaceable frame that is displaceable in the radial direction along a track provided on the rotating support. A device according to scope paragraph (1). (13) According to claim (2), the at least one turning rod is disposed on a displaceable frame and is displaceable along a trajectory parallel to the axis of the rotary support. equipment. (14) The device according to claim (13), characterized in that the cutter is guided so that it can be displaced in a direction parallel to the rotation axis of the rotary support. (15) An adjusting movement is imparted to the deflection rod and, if desired, to the cutter by means of a linkage, a rack and pinion mechanism and/or a rope pulley and rope or similar means, said adjusting movement being applied to a centrally disposed carrier. 14. Device according to claim 13, characterized in that it is extracted from the movement of a sliding ring which is slidably mounted on the device. (16) The rotating support comprises a mounting plate non-rotationally connected to the free end of the cage-like rotating frame, said rotating frame surrounding the support element of the support mandrel and rotating for rotation about a horizontal axis. A part of the mounting plate attached to the main frame via a ring and arranged on the side of the mounting plate opposite the support element of the support mandrel is connected to the frame or carrier of the winder, and at one end of said frame or carrier of the winder, 2. The device according to claim 1, further comprising a stub shaft rotatably mounted on the stand and non-rotatably connected to the gear motor. (17) The rotating support comprises a mounting plate supported by a cage-like rotating frame, said rotating frame surrounding the support element of the support mandrel and rotating about a horizontal axis via two spaced apart rotating rings. rotatably mounted to a main frame, said rotating frame operatively connected to a rotational drive, a take-up shaft having an axis axially aligned with an axis of rotation of the rotatable support; Device according to claim 1, characterized in that the support mandrel is rotatably mounted on the frame on the side of the mounting plate opposite the support element. (18) The winding shaft is adapted to be disengaged from an associated drive fixed to the main frame, and the winding shaft is rotatably mounted on a laterally movable truck. The device according to scope paragraph (17). (19) The device according to claim (17), wherein the winder drive device comprises a motor having a rotating magnetic field.