DD287171A7 - STRUCTURING DEVICE FOR BRAZING MACHINES - Google Patents

Abstract

Strangfuehrungsvorrichtung for braiding machines, especially round braiding machines, in which mounted on a support disk planetary bevel gear rolls over a housing attached to the sun gear and eccentrically a crank is arranged directly on the planetary gear and a coupling engaging the crank is rotatably connected to a unilaterally mounted on the turntable Strangfuehrungshebel and the Bearings of planetary bevel gear, coupling and strand guide lever were made in parallel and the axial direction of the bearing of the strand guide lever to the braiding point shows. Fig. 1 {strand guiding device; braiding machines; circular braiding machines; stranded good; braiding crosses; inner and outer delivery spools; Gear drive; Strangfuehrungshebel; pleuel}

Description

For this 3 pages drawings

Field of application of the invention

The invention relates to a rod guide device for braiding machines, in particular round braiding machines for braiding strand-like material (eg hoses, cables) with a group of outer supply spools in a circular arrangement on a rotatable support disc which rotates about a hollow shaft in the first direction with a group of inner Supply spools in a circular arrangement, on which a drive device arranged on the support disc acts to carry out a rotational movement of the inner LM coils against the outer supply spools along a spool track ring on the mounting rail, wherein the strands of the outer supply spools enter into the region formed by the circular path of the inner supply spools. and brought out to effect the intertwining of the inner and outer strands with each other or around a soul.

Characteristic of the known state of the art As a strand guiding device of this type devices are known on the basis of a cam mechanism, which has a large,

have the outer coil circle enclosing cam body (cam ring) whose guideway (groove curve) consists of several sinusoidal waves. In the curved guide track engage a plurality of Kurvenabtastkörper (shuttle, rollers), which transmit the law of motion of the guideway via a pin on the respective pivotable strand guide lever. The pivotable strand guide legs have guide rollers for guiding the Strangmatorials and are in

Mounted lever stands mounted on the support disk rotate about the central hollow shaft. From the adjacently arranged fixed cam body, the circulating strand guide legs become sinusoidal Vibrations offset. It is there »strand material from the outer supply spools on the guide rollers of the Strangführungshebei the braiding ("work center") of the machine fed (prospectus of Fa. VEB Schnellflechter Berlin). These known strand guiding devices have some disadvantages. First, because of the predominantly sliding scan of the cam track, rapid wear is involved Curve scanner body and guideway to record. Secondly, the large cams enclosing the outer coil circle require large stable supports, usually in Form massive housing, whereby space requirements and machine mass are correspondingly large. Thirdly, the open lubrication of the cam gears makes it almost impossible to avoid contamination of the braiding material. Furthermore, a round braiding machine with a strand guiding device on the basis of a coupling gear is known to de

has been developed for the purpose of braiding material strands around hoses or cables and higher

Operating speeds to achieve as before (DE-PS 2743893). The machine has a strand guiding device, which in a rotary table in the vicinity of the machine longitudinal axis more Has parallel shafts parallel concentric, of which one end of the shafts with a planetary gear and the other end with a Crank is busy. At the periphery of the turntable a bearing support is arranged, the bearing points for receiving the strand guide arm and

has a rocker arm, wherein the axes of these bearings are perpendicular to the crank axis, so that the

Strand guide arm in the longitudinal direction to the braiding point shows. To realize the pivoting movement of the strand guide arm of the crank stroke via a coupling rod on the Transfer rocker arm of bearing support. The arcuate path of the rocker arm can then be implemented in two variants on the strand guide arm; once

via a pivot in the middle and a sliding joint at the end of the strand guide arm to achieve a straight-line guide

Tips of the strand guide arm and a speed increase to the zero crossing (DE-PS 2743893 Fig. 1) and to

second via a thrust joint in the middle and a hinge at the end of the strand guiding arm to increase the Hub3 and the speed increase to the zero crossing (DE-PS 2743893 Fiq.5).

This described strand guiding device has the following disadvantages.

• The need for a greater number of axes and gels, etc. because of the compensation of the 90 ° axle offset of the crank axle to the axles of the bearing support.

• The realization of the straight guide of the tip of the strand guide arm requires many deflection points for the strand material and brings by the superimposed pivoting and longitudinal displacement of the strand guide arm Zugspannungsunterschiede in the strand material.

• The arcuate pivoting of the strand guide arm (DE-PS 2743893 Fig. 6) results in greater differences in the distance from the top of the strand guide arm to the braiding and thus also Zugspannungsunterschiede in the strand material, which lead to axial vibrations at the braiding and affect braiding quality.

• As a matter of principle, the crank bearing is located close to the machine axis, so that a long coupling is required.

Object of the invention

The aim of the invention is to realize a strand guiding device with simple technical means while saving material and a longer service life, wherein the components are not subjected to excessive wear.

Explanation of the essence of the invention

The invention has for its object to develop a strand guiding device, which performs the collision-free crossing of inner and outer wire strands with uniform tensile force and strand withdrawal speed. According to the invention, this object is achieved in that a mounted on a rotating support disc and the outer supply sprockets associated planetary gear wheel rolls over a fixed to the housing sun gear and directly on the planetary bevel gear eccentrically a crank is arranged and acting on the crank coupling with a one-sided on the support plate by means Lever rack mounted SUanp. Lever is rotatably connected and the bearings of planetary bevel gear, coupling and Strandführunf / sheb dl are arranged parallel to each other and din axial direction of the storage of the strand guide lever to Flechtounkt shows.

The drive provided for coupling consists of a connecting rod. But acting as a coupling push rod can also be connected via a sliding joint of a bearing block movably held additional coupling member and a bearing support with the strand guide lever in operative connection.

The strand guiding device is arranged in a system of rotating supply spools. Around a hollow shaft outer delivery coils are formed in a circular arrangement, which are fastened to a rotatable in a first direction support disk. The inner ones on supply spools are also arranged in a circle on which a drive device arranged on the support disc acts to carry out a rotational movement of the inner supply spools relative to the outer supply spools along a spool track ring on the support disc in an opposite direction to the first direction, the strands of the outer supply spools in the area formed by the circular path of the inner supply spools and out of this area, in order to effect the braiding process. This feeding in and out of the strands takes over the Stranyführungsvorrichtung which is arranged on the support plate and associated with each outer supply spool. Upon rotation of the support disk, the planetary gear wheel rolls on the sun gear, so that due to the special construction of the strand guide lever executes a reciprocating motion and thus in and out of the strand in the area formed by the circular path of the inner supply spools.

The strand guiding device according to the invention allows by the parallel arrangement of the axes for planetary bevel gear, crank, coupling and strand guide lever and the alignment of the pivot axis of the strand guide lever at the angle α directly to the braiding the livelihood with few components and with a simple design of the coupling gear and strand guide members and the realization a uniform strand guidance over the entire pivoting range.

Ausführungsbel'jplel

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawings show

Fig. 1: A transmission diagram of a braiding Fig. 2: A schematic view in the direction X of the strand guiding device of Fig. 1 for the outer supply spools in shape

a 4-member linkage.

Fig. 3: As shown in FIG. 2, but in the form of a 6-member linkage

 4: A view in the direction X of the strand guiding device

 Fig. 5: A sectional view of the strand guiding device.

As can be seen in FIG. 1, a round braiding machine 10 has a hollow shaft 11, through which a hose 12 is pulled during the braiding by means of a pulling device. The hollow shaft 11 is rotatably mounted in a housing 13 and is driven by a countershaft 14 via a Stirnzahnradpaar Z ₁ Zz ₁ .

On the hollow shaft 11 is turn rotatably arranged the support plate 15, which receives its drive from the countershaft 14 via the spur gear pair ulz · .

On the support plate 1 δ the outer supply coils A _n (A 1 ... A12) are firmly attached and rotate with this clockwise. The support plate 16 has a coil track ring 16 near the outer periphery of the inner supply coils I _n (11 .. 112)

on its circular path.

The inner supply spools I _{n are driven} by the hollow shaft 11 via aV. Sun gear Z ₁ , about in the support plate 15th

mounted planetary gears Z ₂ and toothed segments z _r , which in turn firmly connected to the inner coil carriers 17

The numbers of teeth Z ₁ to Z ₇ and the axial distances are designed so that the inner supply coils I _n at the same speed

circulate like the outer supply spools A _n only in the opposite direction, ie counterclockwise.

The strands of the inner supply spools I _n to be interlaced are substantially directly from the supply spool under one Angle α the braid point 18 fed directly. The strands coming from the outer supply spools A _n have to move through the circular path during the relative movement

the inner supply spools I _n periodically be brought in and out. In order to realize this braiding cross-over, the inner supply spools I _n must be able to pass completely on all sides and at least partially be able to be crossed without hindrance by the outer strands, and for the inward and outward running

Control movement must be present corresponding strand guiding devices 19. Passableness of the inner Supply spools I _n is achieved in that between the individual supply spools I _n including the respective spool carriers

and Zahnsegmsnte Z _{3 is maintained} a constant distance, that the coil web ring 16 of the support plate 15 in the

Gaps between the planetary gears Z ₂ slots 20 at regular intervals for immersion of the outer Has strands and that the planetary gears Z ₂ , the toothed segments Z ₃ with coil carrier 17 and inner coils I _n flowing

passed on the circular path. For a smooth transport of the inner supply spools I _n rollers 21 are preferably provided on the bobbin 17, which roll in a parallel double track of the support plate 15, each

Spool carrier 17 per track several roles; In addition, there is always at least one planetary gear z ₂ with the respective Tooth segment Z ₃ in engagement. The strand guiding device 19 has a lever stand 22, which is attached to the outer periphery of the support plate 15 and

serves to receive the strand guide lever 23. The strand guide lever 23 is pivotable from an outward position, as shown in FIGS. 2 and 3, to an inward position as shown in phantom in FIGS. 2 and 3.

A plurality of guide rollers 24,25 are attached to the strand guide lever 23 to the strand from the outer supply spool to Flechtpunkt 18 to lead. The strand guiding devices 19 are attached to the support plate 15 so that the Swivel axes 26 of the strand guide lever 23 in the direction of the braiding point 18 show and thus the Strand guide lever 23 when dragging the support plate 15 drag behind that the guide rollers 25 at the top of the Strand guide lever 23 in the immediate vicinity of the slots 20 pivot in and out, and that the Strand guide lever 23 with the outer strands always cross the circular path of the inner supply spools I _n , if the

free distances a between the inner supply spools I _n are located close to the slots 20 of the support disk 15.

Due to the arrangement of the pivot axes 20 in the direction of the braiding point 18 and approximately at right angles to Swing plane of the strand guide lever 23 extending withdrawal direction of the outer strands of the guide rollers 25th

to braiding point 18, the total distance from the non-oscillating respective guide roller 24 to the end is caused to

Flechtpunkt 18 remains the same with a large approximation, and tension fluctuations by different Strand takeoff speeds are avoided. To realize the described pivoting movement of the respective strand guide lever 23 of this upper is a Coupling 27 driven by a circulating in the bearing 33 crank 28, as shown in Figure 2 and Figure 3. The drive movement

this is transmitted from the supported in the support plate 15 by means of bearings 29 planetary gear z ₉ , by the

Circumferring the support plate 15, the rotatable planetary bevel gear z ₉ on the fixed sun gear z ₈ im

scrolls desired ratio.

Advantageously, the axis of the crank 28 and the bearing 29 should be parallel to the pivot axis 26 so that the Movement of the coupling 27 can be done in the rocker plane 23 and you with few and simple joints

gets along.

The way · and speed course of the guide roller 25 of the strand guide lever 23 is in the embodiments according to Fig.2 or Fig.3 different. Fig. 2 shows a single crankshaft swinging arm, which approximately sinusoidally the strand guide course on the guide roller 25

,designed. The guide speed is according to the first derivative a Slnus-Koslnus combination.

Flg. FIG. 3 shows a modified rocker arm, in which by additional arrangement of a coupling member 30 on a Bearing 32 and a sliding joint 31, the control function is changed so that the sinusoidal course in The intersection of the outer strands with the inner supply spools becomes steeper and flatter near the reversal of excursion

becomes. As a result, the guide speed increases in the crossing area and reduces near the

Reversing positions. The simple rocker arm has the advantage of the low number of gear members and the disadvantage of larger amplitudes

and longer strand guide lever 23 at the same increase of Stouerkuive in the crossing area.

In the modified rocker arm to get out of smaller amplitudes and shorter strand guide levers 23 and has

for the constructive design overall more variation options, but this more gear members are to be arranged.

In Figure 4 and 5 structural details are presented in more detail to the strand guiding device.

Claims (3)

1. A strand guide device for braiding machines, especially circular braiding machines having inner and outer in the opposite direction moving supply spools to braid forming interlacing of inner and outer strands by means of positively driven, gear driven, vibrating elements, characterized in that a on a supporting disc (15) mounted planetary bevel gear (z ₉ ) on a housing (13) fixed sun gear (z ₈ ) rolls and directly on the planetary bevel gear (z ₉ ) eccentrically a crank (28) is arranged and on the crank (28) engaging coupling (27) with a one-sided on the support disc (15) by means of lever stand (22) mounted strand guide lever (23) is rotatably connected, and that the bearings (26,29,33) are arranged parallel to each other and the axial direction of the bearing (26) of the strand guide lever (23) to the braiding point. 2. strand guiding device according to claim 1, characterized in that coupling (27) consists of a connecting rod. 3. strand guiding device according to claim 1, characterized in that the coupling (27) acting push rod via a thrust joint (31) in the lag arbock (32) movably held additional coupling member (30) with the strand guide lever (23) is in operative connection.