DE2042719A1 - Spool carriers for braiding and knocking machines - Google Patents

Description

PATENTANWÄLTE ^ια DR. ING. KARL BOEHMERT DIPL-ING. ALBERT BOEHMERT

28 BREMEN FELDSTRASSE 24 TEL. (0421) 491700, 442551

File number: Tlan-iTimtil rinn JP Fo »t * di» ckkontoi Hamburg 126083

aeUcUUUeJ.aUUg bank account! Bremer Bank, Br.mtn, account 1001449

Named Note: Horth American Rockwell Corp.

My reference: g g ^ -j 28 Bremen, _{August 2} , 1970

NORTH AMERICAIi ROCKWELL CORPORATION, Pittsburgh, State of Pennsylvania (V.St.A.)

Spool carriers for braiding and lace machines

The invention relates to a bobbin for braiding or Lace machines.

In bobbins for braiding and lace machines, the thread or strand material used is usually wound on reels, which are rotatably disordered on the carriers, and the reels are alternately against Rotation held to create tension in the thread or strand material to generate and released again under the control of a tension member to remove the To allow thread material when the bobbin support along sinusoidal guide tracks around a clapper or Braid center to be led around to a wattle to have been made into lace. In known spool carriers such as the one exemplified in U.S. Patent 3,324,757 discloses oind, iet the coil or the bobbin is provided with a Zahngeoperr, on which a pawl engages, theuo each on a single

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Attacks ηβη tooth of the ratchet. This pawl will moved by resilient devices in holding engagement with the teeth of the Oesperres on the bobbin · The locking » pawl gives the coil under the influence of a tension limb free, which from the thread or the Litee contrary to the Effect of compression springs is shifted from a thread take-up position to the pawl release position. When the latch releases the bobbin, then causes tension in the thread and the movement of the tension member in the thread take-up direction causes the bobbin to rotate in the thread discharge direction and

P is the length of thread drawn from the bobbin

Tendon added and tensioned, and the movement of the Tensioning member in the receiving direction lets the pawl again come into engagement with the Spul engesperre. Since this re-engagement of the pawl with the locking mechanism between a pair of adjacent locking teeth occurs very often during the pick-up movement of the tendon, rotates the bobbin in the thread delivery direction up to a tooth the pawl comes to rest so that the coil movement is stopped · When this pick-up movement of the tendon is combined with the inertia forces normally seeking to rotate in the yarn delivery direction when the Coil carrier moves between the inner and outer sections of its sinusoidal guide tracks, then strike the ratchet teeth on the pawl with sufficient force to destroy both the pawl and the ratchet teeth.

Also in the case of the bobbin carrier of the US patents mentioned above 3,324,757 cause the movement of the bobbin in opposite directions between the

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Inertial forces occurring in the outer and inner sections of its sinusoidal motion cause the coil to rotate in reverse or Fadenaufwickelrichtnng so that dae Tension member is in turn moved to lift the pawl from the locking mechanism. When the bobbin moves backwards as quickly as possible occurs, then the force required only to overcome the inertia of the bobbin, which sets it back into rotation in the thread delivery direction, is applied directly to the thread or transfer the strand, which in some cases causes the thread to break.

In another known form of bobbin, which so designed let "Aass the damage to the reels" lock and pawls reduced and a reverse rotation of the reels is prevented, as described for example in the OS patent 3 425 313, the pawl is provided with the same number of teeth as the locking member connected to the spool in order to achieve the When the bobbin is stopped in the delivery direction, distribute the impact force that occurs However, prevents the coil in the opposite direction. While the clutch actually does a reverse rotation of the bobbin «the teeth of the locking mechanism * and the pawl are still destroyed by their striking when stopping the rotation of the bobbin in the thread delivery direction.

In addition to damaging the bobbin lock and pawls of the bobbin carriers of the above-mentioned US patents 3,324 and 3 425 315 will also become the normal range of motion of the tendons «wipe their pawl release and

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BATH ORIGINAL

FadenaufnahmeetGllungen considerably enlarged because the tendon unintentionally excess lengths of the suture b * w. the strand be withdrawn before the dispensing movement of the bobbins from the Pawls is stopped. This causes the tension exerted on the strands by the tendons to fluctuate beyond the desired thread tension limits and leads for the formation of defective, processed by the machine Material.

The present invention is concerned with providing a Device for controlling the undesired rotation of the spool of a spool carrier in the opposite direction »whereby the control devices have a first torsion spring with spiral windings which tend to contract in order to prevent the rotation of the bobbin in the yarn dispensing direction. A large torsion spring is also included Spiral windings are provided, which normally dos has the tendency to contract and the rotation of the coil Prevent IBU in a direction opposite to the thread delivery direction. The coils of the first spring are through the movement of the thread tensioning element of the bobbin widened in one direction to allow a rotation of the bobbin in the thread dispensing direction and they can contract during the movement of the thread tensioning element in the opposite or thread take-up direction to one turn of the bobbin cu impede. The turns of the second spring are widened when the bobbin rotates in the thread dispensing direction.

The invention is hereinafter R ^ h fl nd an exemplary · - explained in detail, taken in conjunction with the drawing, namely zeigtt

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BATH ORIGINAL

Pig. 1 is a side view of an inventive Bobbin;

FIG. 2 is a cross-section along the line and in the direction of arrows 2-2 of FIG. 1;

Fig. 3 is a cross section along the line and in Direction of arrows 3-3 of Fig. 1;

4 shows, on an enlarged scale, a view in the direction of arrow 4 in FIG. 2, with parts broken away to show other parts more clearly;

FIG. 5 shows a cross section along the line and in the direction of arrows 5-5 in FIG. 2 on an enlarged scale; FIG. and

6 is an isolated view in the direction of arrows 6-6 in Fig. 2 on an enlarged scale.

The bobbin carrier shown here can be used in high-speed braiding and lace machines, and the present invention is particularly directed to devices for controlling the supply of wire material from a supply reel on the bobbin carrier ssu a point at which the material is prebeaded into a braiding , the bobbin carrier is of the type shown in U.S. Patent 3,425, which has a bobbin carrier on which a supply of thread or strand material is wound, the further fixed guide members for transferring the thread from the bobbin to the bobbin center of the hoe, a tension member for comprises the thread and means for controlling the rotation of the bobbin both in the thread delivery direction and in the direction opposite to the thread delivery direction. The devices for controlling the rotation of the bobbin in the yarn delivery direction have a component attached to the bobbin and rotatable therewith, and a first torsion filament, the spiral windings of which normally tend to contract and the rotatable component and

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the bobbin under force closure against in the thread delivery direction Keep rotation. In addition, are operated by the suture tendon Devices to widen the turns there only on Spring provided to keep the bobbin rotating in the thread dispensing direction to release · The means for controlling the rotation of the spool in the reverse direction have a second Torsion springs, the spiral turns of which are designed so that they normally contract and the rotation of the rotatable component and the coil in the reverse direction with frictional connection stop, a rotation of the component and the bobbin in the pad delivery direction, however.

As can be seen in particular from Figures 1 to 3 of the drawing, the coil carrier has a foot part 10 which is operated on one of the star gears or horn gears Foot section of a conventional bobbin or similar drive members that are used to actuate the bobbin along oppositely running sinusoidal guideways around the braiding or lace center of the machine around, is attached, as is indicated schematically in FIG. 1 at 12. A spindle 15 is on the foot part 10 (Fig. 5) for the rotatable reception of a bobbin 16 for thread or strand material 17 from one or multi-strand steel wire or the like attached. Next are 10 posts or supports 20 and 21 on the foot part, a pair of tubular support members 22 and a support rod 25 are attached. The top of posts 20 and 21, the Support members 22 and the support rod 25 are to avoid relative bending relative to each other by a holding bracket 26 held, the z. B. is attached by pins 27 (Fig. 1).

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During its way from the bobbin 16 to the braiding center of the machine, the thread 17 runs from the bobbin around the post 20 ₉ under a roller 30 which is provided with a circumferential groove and is attached to a (Eragsttitze 31 on the foot part) and via a rotatable on a clamping member 33 »which is on the support members 22 and the support rod 25 is slidably mounted, attached sheath 32. From the shackle 32, the thread or strand passes under a roller 35 provided with a circumferential groove on the foot part 10 and is then attached to the holding console via a! 26 to the braiding center of the machine. The tensioning element 33 can be moved in such a way that it applies tension to the thread 17 under the action of spiral compression springs 37. The spiral compression springs 37 are arranged between the tensioning element and the foot part 10 on the support elements 32 and also a compression spring 40 is attached to the support rod 25 between the tensioning member and an adjustable cutter 41. The courage ter 41 is on a thread on the support rod 25 near the foot part (Fig. 1) unscrewed in a manner and for a purpose as described in the aforementioned U.S. Patent 3,425,315. While the bobbin carrier moves around the braiding center of the machine, the bobbin 16 can be secured against rotation in the thread delivery direction, which is the clockwise direction indicated by arrow A in FIG. 2, and released for rotation in this direction. In addition, the bobbin carrier can be secured against rotation in the opposite direction to the thread delivery direction, ie in the counterclockwise direction, as indicated by arrow B in FIG Component 42, which can rotate on the spindle 15. The component 42 has an upper flange portion 45 with upwardly projecting lugs 46, for releasable '

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Engaging slots 47 in the bottom of a lower one Flange 48 of the bobbin. These shiits run radially to the spindle on opposite sides of its central axis (Fig. 4 and 5). A bearing section 50 points downward from the flange section 45 of the component 42, which is shown in FIG a bore 51 in a bracket 52 rotatably received will. From the upper end of the bracket 52, arms extend outwardly, which are provided with openly tapering slots 56 and which the support members 20 and 21 closely encompass around the console against during a rotation of the component 42 and the b coil 16 in the manner described below Secure rotation. The component 42 also has a lower section 57 »that at the lower end of the bearing section 50 z. B. is fixed by screws 60. The lower section 57 has an upper bore 61 which the spindle 15, and a lower bore 62 which has an upward facing pin 65 of the foot part 10 includes so that it can rotate. The component 42 is against axial displacement on the spindle 15 between the upper end of the pin 65 of the foot part and a locking ring 63 or the like held on the spindle, as can be seen from FIG is.

) The console 52 has an outer peripheral surface 67 which is aligned with an outer peripheral surface 70 on the section 57 of the component 42, and the peripheral surface 70 in turn aligns again with an outer peripheral surface 71 on the pin 65 of the foot part 10. An upper torsion coil spring 72 is arranged between the arms 55 of the console and an annular collar 75 on the component 42 on the peripheral surfaces 67 and 70 of the console 52 and of the component 42, respectively. A lower TorBions coil spring 76 is between the annular collar 75 and the foot portion 10 on the

Circumferential surfaces 70 and 71 of the component 42 or of the pin arranged

Am a protruding bath 77 of the uppermost turn of the spring is set in a bore 80 in the bracket 52 (Fig. 5), and a projecting end 81 of the lowermost turn the spring 72 is anchored in a recess of a series of recesses 84 in a sleeve 82. You sleeve is inserted rotatably between the PuQteil 10 and the arms 55 of the console 52 and surrounds the springs 72 and 76 (Fig. 3 and 4) loose. With the spring 83 attached between the sleeve 82 and the support bracket 31, it tries to pretension the sleeve in a clockwise direction, as can be seen from FIG. The turns of the spring 72 are designed so that, as can be seen from Fig. 3, they try to pull each other relatively to rotate clockwise to the fixed upper binding winding, and this tendency of the windings to contract in connection with the movement of the sleeve 82 in the clockwise direction under the influence of the spring 83 leads to a firm Clamping connection of the peripheral surface 67 of the console 52 and the peripheral surface 70 of the component 42, so that the component 42 and the bobbin 16 are secured against rotation in Fadenabgabeeriohtung. Conversely, if the sleeve 82 is clockwise is rotated, then, as will be explained in the following, the turns of the spring 72 are expanded so that they allow rotation of the component 42 and the bobbin 16 in the thread dispensing direction.

A protruding end 88 of the lowermost turn of the spring 76 is secured in a bore 89 of the pin 65 (Fig. 5), and the turns are formed so that they tend to rotate normally counterclockwise relative to the attached end turn, such as

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from Fig. 4 emerges. In the process, they contract and lie on the circumferential surface 70 of the component 42 and the circumferential surface 71 of the pin 65, and secure the component 42 and the coil 16 against a rotational movement in the counterclockwise direction or against the thread delivery direction, however, release the component 42 and the 3bobbin for movement in the thread delivery direction.

In a cutout 37 in the sleeve 82, a plate is fastened, for example by screws 90, which is angled downwards. Has nose portion 92 which can engage a contact surface 95 formed at the lower end of a finger 96 attached to the clamping member 33 (FIGS. 1, 2 and 6). Each time the bobbin 16 is released for movement in the thread dispensing direction by the movement of the sleeve 82 in the counterclockwise direction, the thread or strand is pulled off the bobbin its position shown in Fig. 1. At this point, the finger 86 is out of engagement with the nose portion 92 of the sheet metal 91 _t and the sleeve 82 has moved clockwise to its position shown in Fig. 3, so that the turns of the Spring 72 hold component 42 in place and thus prevent further movement of component 42 and bobbin 16 in the yarn dispensing direction. At the same time, the turns of the springs 76 act on the component 42 in order to secure it and the coil against rotation in the opposite direction. When the thread or wire withdrawn from the bobbin is processed in the braiding center during the above-described movement of the bobbin, the tensioning member 33 is gradually moved downwards from its position shown in FIG

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and the sleeve 82 rotates counterclockwise so that the coils of the spring 72 are expanded and the component 42 and spool 16 for rotation in the Fadan delivery direction fruigeben, so that 'pulling off another piece of thread or stranded wire from the coil is possible.

It is to be understood that the improvements particularly shown and described, through which the results presented can be achieved, modified in different yfeisc and can be modified without departing from the subject matter of the invention.

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Claims (1)

- 12 patent claims Spool carrier for braiding or lace machine !! with a Foot part, a spindle arranged on the foot part for the rotatable mounting of a bobbin with thread or strand material, a guide device for transferring the thread or the braid from the bobbin to a braiding point at which the thread or the braid is braided into a braid, a Tensioning member for tensioning the thread or the strand during the transfer from the bobbin to the braiding point and with devices for controlling the tensioning member between a thread or strand take-up position and a second position, characterized by a first position on the spindle (15) with the bobbin (16) ) connected component (42); one with a first spring (72) and the first component (42) connected sleeve (82) which from the clamping member (33) during deesen Movement to its second position is maintained in a first position with the first spring (72) rotating freely the eratea component (42) and the bobbin (16) in a thread or strand delivery direction; Means for moving the sleeve (82) into a second position when the Tensioning member (33) is moved into the thread or strand take-up division, the first spring (72) being moved by the movement of the sleeve (82) in the second position, the first component (42) and the bobbin (16) against rotation in the yarn delivery direction and by a second spring (76) connected to the first component (42) for securing the first component (42) and the bobbin (16) against rotation in a direction opposite to the thread delivery direction. 109823/110 3 2. Coil carrier according to claim 1, characterized in that the first spring (72) is a torsion spring with spiral windings, which is pretensioned in such a way that it normally contracts and, under force, comes to rest on the first component (42) and the first component (42) and the bobbin (16) against movement in the thread delivery direction when the sleeve (82) is in the second position, and that the coils of the first spring (72) are widened by the sleeve (82) when it is in the first position is shifted, so that the first component (42) and the bobbin can then rotate freely in the thread dispensing direction. 3. bobbin naoh claim 1 or 2, characterized in that the means for displacing the sleeve (82) in the second position a spring (83) attached to the sleeve (32), which tends to normally bias the sleeve into the second position 4. coil carrier naoh claim 1, characterized in that a bracket attached to this on the coil carrier (52) is placed} that the first spring (72) is a helically coiled torsion spring, the turns of which are normally are pretensioned in such a way that they contract and thereby produce a force connection with the first component (42) and the bracket (52), one end of the spring (72) on the sleeve (82) and the other end on the console (52) is attached; the coils of the first spring (72) contract and thereby join forces with the first Component (42) and the console (52) can come when the sleeve (82) is moved into the second position, and that the coils of the first spring (72) are expanded and the first component (42) is released when the sleeve (82) is in their first position is shifted. 109823/1 103 5. coil carrier according to one of claims 1 to 4 »thereby characterized in that the second spring (76) is a helically wound torsion spring, one end of which on one The pin (65) of the foot part (10) is attached, the coils of the spring (76) normally being pretensioned in such a way that that they contract and thereby frictionally engage with the first component (42) and the pin (65) of the foot part (10) come and set the first component (42) and the bobbin (16) against rotation against the thread dispensing direction, the however, release the first component (42) when it moves in the direction of the thread transfer. V 109823/1103 * Blank page