DD261967A5 - DEVICE FOR TURNING OF ROUNDED CIRCULAR CROSS SECTIONS WITH SMOOTH, UNWELLED BELT - Google Patents

Abstract

The invention relates to a device for the helical taping of circular tubes (4) with smooth, uncorrugated tape (8), which is drawn off from a tape roll (7) by the rotating tube (4) and deformed by a rolling process immediately before it is applied to the tube (4). The rolling process is brought about by a rolling ring (12), driven synchronously with the tube (4) by the tube's (4) rotary drive unit and surrounding the tube (4), and a frictionally driven rolling plate (13), whose circumferential surface can be adjusted about an axis lying at a transverse angle to the tube's longitudinal axis (4a) and fed in to the rolling ring (12). The rolling ring (12) and the rolling plate (13) with its adjusting device are located on a rotary table (10) which, according to the particular inclination of the tape (8) being wound can be rotated about an axis (17) intersecting the longitudinal axis (4a) of the tube at right angles as an extension of the lead point (16) of the tape (8) onto the tube (4). Also located on the rotary table (10) is a slotting tool (20) whose cutting edge (20a) engages on the tube (4) roughly 90<o> in front of the lead point (16) of the tape (8) onto the tube (4). <IMAGE>

Description

With this development of the invention it is achieved that the band is already drawn at that angle to the pipe surface and at the same time subjected to a rolling process which corresponds to the respective pitch angle. This eliminates subsequent deformations or changes in position of the strip on the pipe surface, which have led in addition to an additional burden in particular to a limitation of the winding speed. The winding operation is thus improved both in terms of the loading of the guide means for the tape as well as with respect to the loads of the tape such that lower quality tape can be applied with higher winding speed and the wear of the guide means is reduced.

The development of the known devices according to the invention also creates the possibility that according to a further feature of the invention, a groove tool can be arranged on the turntable whose cutting edge engages in the pipe on the pipe in the range of about 90 ° before the casserole of the tape. By this inventive alignment of the grooving tool according to the respective slope of the tape and by the emergence of the groove just before the casserole of the tape is achieved that the tape reliably enters the previously prepared groove in the surface of the tube, regardless of in the Practice unavoidable wow and flutter both in terms of the rotary drive and in terms of tube feed.

With the invention, it is finally proposed to follow the Nutwerkzeug a Nutzudrücker and a Rippenrichtführung, wherein the Nutzudrücker is located within half a revolution of the tube after the casserole of the band, so that guarantees a perfect and firm fit of the tape in the grooved tube with the inventive device can be.

embodiment

The solution according to the invention will be explained in more detail below in an embodiment with reference to the accompanying drawings

 Show it:

FIG. 1 is a plan view of an overall schematic representation of the device; Fig. 2: a plan view of the turntable;

3 shows an end view of the turntable;

4 shows a side view of the turntable and

5 shows a perspective view of the take-up area.

The plan view in Fig. 1 shows a machine bed 1, on which a rotary and feed drive 2 is arranged with a driving device 3 for the pipe 4. The tube 4 to be wound is thus driven in rotation and with a propulsion corresponding to the pitch of the belt to be wound up. On a bearing plate 5 a bezel 6 is further arranged to support the wound tube 4.

In addition, Fig. 1 shows a tape roll 7, from which the wound tape 8 is withdrawn through the rotating tube 4. This belt 8 is fed via a deflection roller 9 to a take-up device, which is shown in FIG. 1 only in a schematic plan view and in FIGS. 2 to 5 on the basis of an exemplary embodiment. This take-up device comprises a turntable 10, which is rotatable about a vertical axis relative to the machine bed 1, as was exaggerated in Fig. 1 was drawn. This turntable 10 carries a bearing block 11 for a rolling ring 12 which surrounds the pipe 4 to be wound and with which a rolling plate 13 cooperates. While the rolling ring 12 is driven synchronously with the tube 4 by the rotary and advancing drive 2, the rolling plate 13 is frictionally taken along by the rolling ring 12. To be able to adjust the rolling process taking place between the rolling ring and the rolling plate for the wound strip 8, the rolling plate 13 can be adjusted about a horizontal axis and mounted relative to the rolling ring on the turntable 10. The respective angle of attack of the turntable 10 relative to the longitudinal axis of the tube 4, which corresponds to the respective pitch of the wound onto the tube 4 tape 8 is readable on a dial ring 14 on the turntable 10.

The turntable 10 and the components arranged thereon are shown in detail in FIGS. 2 to 5. These detailed illustrations show a tape guide 15 for the belt 8 to be fed to the rotating pipe 4, which is aligned with the longitudinal axis of the pipe 4 in accordance with the set angle of the turntable 10. With the help of this tape guide 15, the band 8 is supplied in the illustrated embodiment, the bottom of the tube 4, in accordance with the respective pitch angle of the belt 8 on the surface of the tube 4. The casserole point 16 of the belt 8 on the tube 4 is shown in FIGS. 2 to 5 located. Through this casserole point 16, the axis 17 of the turntable 10 extends relative to the machine bed 1, which is formed in the embodiment by a bearing pin 18 and perpendicular to the longitudinal axis of the tube 4 in extension of the casserole point 16 intersects. This ensures that the force exerted by the rolling ring 12 and rolling plate 13 on the strip rolling takes place exactly at the Auflaufpunkt 16, regardless of the set angle of the turntable 10 relative to the machine bed 1 and regardless of the angle of the rolling plate 13 relative to the rolling ring 12, the by pivoting the rolling plate 13 takes place around the drawn in Figure 4 pivot axis 19. Due to the adjustment described above it is ensured that the tape 8 is always supplied by means of the tape guide 15 at that angle of the surface of the tube 4, which corresponds to the respective pitch angle of the belt 8 on the tube 4. In addition, this adjustment allows grooves of the tube surface and a reliable insertion of the wound tape 8 in this groove, on the one hand to ensure a reliable fit of the wound tape 8 on the tube 4 and on the other hand to generate a good heat transfer between wound tape 8 and tube 4.

The grooves of the tube 4 takes place with the aid of a grooving tool 20, which is arranged to align and deliverable on the bearing block 11 of the rolling ring 12 and engages the cutting edge 20a in the region of about 90 ° before the emergence point 16 on the tube 4. The inFig.3 counterclockwise rotating tube 4 is therefore provided about ¹ A revolution before Auflaufpunkt 16 through the cutting edge 20a of the grooving tool 20 with the helical groove, so that it is ensured even with synchronous fluctuations in the rotational drive and the feed 4 that the Band 8 always runs reliably into the previously produced groove.

In addition to the groove tool 20 a Nutzudrücker 21 is arranged on the bearing block 11, which acts on the ungrouted surface of the tube 4 and causes a kind of caulking of the retracted into the groove band foot. In addition, FIGS. 4 to 5 show a rib guide 22 which corrects any deformations of the ribs located on the tube 4. For the sake of clarity, grooving tool 20, payloader 21 and fin guide 22 have been omitted in the plan view in FIG. 2.

The perspective view in Fig. 5 shows again the interaction of the individual parts in the grooves and winding the belt 8 on the Rohr4. The at the feed point 16 the tube 4 at the bottom by the tape guide 15 supplied belt 8 runs at this casserole point 16 in the groove, which has been generated about half a revolution before the casserole 16 by the cutting edge 20 a of the grooving tool 20. For better clarity, the already wound turns of the band 8 are not shown on the drawing in Fig. 5. As a result, the action of the unpressed surface of the tube 4 Nutzudrücker 21 recognize, as the rib guide 22, which preferably engages the upper half of the wound-up rib. In addition, the perspective shows the interaction between rolling ring 12 and circumferential surface of the rolling plate 13 and the angle 23 between the tube longitudinal axis 4a of the tube 4 and the longitudinal axis 10a of the relative to the machine bed 1 rotated turntable 10th

Claims (3)

1. An apparatus for helically winding tubes of circular cross-section with smooth, unwoven band, which is withdrawn through the rotating tube of a tape roll and immediately before being applied to the tube by a rolling process, by a synchronous with the tube from the rotary drive of the Tube is driven, the tube surrounding rolling ring and a frictionally co-rotating rolling plate is effected, the peripheral surface is mounted about an axis transverse to the tube axis and adjustable against the rolling ring deliverable, characterized in that the rolling ring (12) and the rolling plate (13) with his Adjusting device are arranged on a turntable (10), which according to the respective pitch of the wound strip (8) about an axis of the tube (4a) in extension of the casserole point (16) of the strip (8) on the tube (4) perpendicularly intersecting axis ( 17) is rotatable. 2. Apparatus according to claim 1, characterized in that on the turntable (10) has a groove tool (20) is arranged, the cutting edge (20 a) in the region of about 90 ° before the casserole point (16) of the strip (8) on the tube ( 4) on the tube (4) attacks. 3. Apparatus according to claim 1 and 2, characterized in that the Nutwerkzeug (20) a Nutzudrücker (21) and a rib guide (22) are connected downstream. For this 5 pages drawings Field of application of the invention The invention relates to a device for helically winding tubes of circular cross-section with smooth, unwoven band, which is withdrawn through the rotating tube from a tape roll and immediately before being applied to the tube by a rolling process, which by a synchronous with the pipe from Rotary drive of the tube driven, the tube surrounding rolling ring and a frictionally co-rotating rolling plate is effected, the peripheral surface is mounted adjustable about an axis transverse to the tube axis axis and against the rolling ring deliverable. Characteristic of the known state of the art A device of the type described above is known from DE-PS 3131473. In this device, the rolling surface of the rolling ring is arranged in a plane perpendicular to the tube longitudinal axis, because the rolling ring concentrically surrounds the tube. Although this results in a simple derivation of the rolling ring drive from the rotary drive of the tube. However, the deformed between the rolling ring and the rolling plate by a rolling band is applied regardless of the pitch of the band to be mounted on the tube at right angles to the tube longitudinal axis, so that they are then brought by appropriate guides in the coincident with the respective slope position on the pipe got to. Object of the invention The object of the invention is to inexpensively increase the utility value characteristics of helical winding devices. Explanation of the essence of the invention The invention has the object of providing a device of the type described above for helical winding of tubes circular cross-section with smooth, unwoven band such that the applied to the tube tape in accordance with the respective pitch angle fed to the tube and this a rolling process between rolling ring and rolling plate is subjected, so that subsequent displacements or deformations of the wound tape are avoided, which not only require additional deformation energy, but also represent additional loads on the belt and lead to a limitation of the winding speed. The solution of this problem by the invention is characterized in that the rolling ring and the rolling plate are arranged with its adjusting device on a turntable, the axis corresponding to the respective pitch of the wound tape about a pipe longitudinal axis in extension of the casserole point of the tape at right angles intersecting axis is rotatable.