DE8315303U1 - PLASTIC COIL FOR WINDING YARN OR THE LIKE - Google Patents

Description

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"Plastic coil for

Winding of yarn or the like "

The invention is based on a coil specified in the preamble of claim 1 and by the German Offenlegungsschrift 22 59 364 known Art.

In this known coil, the mouths of the coil core tube are molded onto the disks Nozzle attached and secured in this position by locking.

For this purpose, a plurality of axially parallel arranged, axially parallel, arranged distributed over the circumference are in the connecting piece Slots are provided and the locking projections are located between the slots, inward Molded elastically bendable nozzle zones to allow the bobbin tube to be plugged onto the nozzle to facilitate.

Furthermore, between the zones carrying the locking projections are still over their entire axial length with adhesive

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friction engaging in the bobbin tube Guide zones provided;

However, the manufacture of such reel discs with elongated nozzles is relatively expensive.

In addition, the outwardly open openings in the bobbin tube, and those engaging in the latter Latching projections prevent the thread from being wound onto the bobbin.

The object of the invention is now to provide a coil

of the type specified in the preamble of claim 1, at least while maintaining the state of the

Technique already achieved advantage, which consists in the fact that the disks with the bobbin tube are aligned and can be releasably connected to one another in a secure position, in addition to improving such that a

g simplification of manufacture is achievable, the

also results in inexpensive manufacture.

The solution to this task is characterized by the following features:

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a * the end parts of the bobbin tube are in the Sockets with elastic expansion of this insertable and on the inside of the support playful aril bear trained,

bi the locking projections strive from the supports directed inwards from üfi'd

c. the nozzle and the bobbin tube are each designed to be undivided in the circumferential direction.

This eliminates the one previously required Production of the mutually different nozzle zones, from which a simplification of the Form tool results.

In addition, the ring-shaped, closed design results in both the coil core tube and the nozzle an even more stable connection between these parts.

The disks can also be detached from the bobbin tube, for which purpose only the locking projections by means of one in the mouth of the bobbin tube introduced tool must be pushed outwards.

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ι Furthermore, the entire area of

Coil between the discs free of any:

Protrusions and depressions.

The bobbin tube can also take off

elastically resilient material exist to ί

both when assembling the coil and when |

intended detachment of the discs from the coil core- I

pipe the elasticity of both the nozzle and |

of the bobbin tube, with which smaller 6

Spring travel for the nozzle as previously achievable?

are. Ε

In addition, it is advantageous to simplify assembly

adhesive when in the socket with the free forehead ['

Sides of the bobbin tube corresponding j

Insertion limit stops are arranged. |

These are preferably designed as circumferential 'shoulders to simultaneously pivot bearings

for the coil to form. ;.

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To further simplify the molding tool, it is advantageous in the disks to the inside aiming locking projections to provide openings with the same profile opposite to the latter, can be passed through the mold cores, so that the discs in one only two-part mold can be produced.

An advantageous development that facilitates the intended detachment of the disks from the bobbin tube, which is also of inventive importance in and of itself, is characterized in that the locking projections from the inside of the nozzle in the circumferential direction mutually in the same direction, inwardly rising ramp ramps for them inclined flanks forming opposite edge portions of the bobbin tube to have.

This design of the locking projections allows for the first time an intentional detachment of the disks from the coil core tube without the need for tools ₍ because

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when rotating the discs around the bobbin tube axis relative to the bobbin tube, the inclined flanks of the locking projections run onto the opposite edge parts of the openings in the bobbin tube and thereby inevitably push back the locking projections as far as the outside of the bobbin tube, after which only the disc has to be pulled off the bobbin tube.

Embodiments of the invention are shown in the drawing and are described in more detail below.
Show it:

1 shows a coil in a front view,

partially broken,
Fig. 2 also in the direction of the line II-II

seen,
FIG. 3 shows a further embodiment of a disc support seen from the front side.

This coil comprises a bobbin tube 1, which is made by cutting a plastic tube to length and two circular disks 2 and 3, also made of plastic *

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On each of the two disks 2 and 3 a connector 4 strutting coaxially from the disks is formed .

The nozzles 4 have cylindrical bores 5 into which the end parts of the cylindrical bobbin tube 1 are inserted with static friction.

From the inner sides of the connecting piece 4, at least two each strive to be distributed over the circumference Latching projections 6, each in an opening arranged in the bobbin tube 1 are detachably sprinkled. The facing the free end face of the nozzle 4 The end face of the locking projections 6 is inclined towards the inside and in the insertion direction designed to facilitate the insertion of the bobbin tube end parts into the socket, the Latching projections 6 temporarily displaced with elastic expansion of the nozzle 4 to the outside until they can snap into the openings 7.

The other end face of the locking projections is each undercut in order to make it more difficult for the locking device to unintentionally disengage.

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The DiiifchbfUGhe 7 are rinsing through perforation = core tube manufactured.

In addition, 4 plug-in limiters are within the nozzle stop 8 molded for the sink tube end parts, which are designed as circumferential shoulders and are arranged at the same level as the discs The length of the Rfetvorsprünge 6 in the circumferential direction is each only slightly smaller than that of the breakthroughs 7th

According to FIG. 3, the locking projections 6 have starting from the inside of the connecting piece 4, in Circumferential direction rectified to one another inside rising and up ramps for them in each case opposite edge parts of the openings 7 in the Spuienkernrohr 1 forming inclined flanks 9, which run onto the aforementioned breakout edge parts when the discs are rotated relative to the bobbin tube 1 and at the same time the locking projections at least with elastic expansion of the nozzle, possibly also with elastic deformation of the coil core tube end parts the locking projections inevitably push back elastically up to the outer shell of the bobbin tube, after which the disks only from the coil core

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tube can be withdrawn in the axial direction have to .

In order to further facilitate the insertion of the bobbin tube 1 into the nozzle 4 of the disks ^ can the bobbin tube 1 on the outer sides inclined bevels merging into the end faces exhibit.

This design of the coil may, under certain circumstances, intentionally also allow the disks of the coil core tube to solve before the yarn has been unwound, because this is not done by the bobbin tube from the outside must be accessible.

All new individual and combination features disclosed in the description and / or drawing are used regarded as essential to the invention.

Claims (1)

1. Plastic spool for winding yarn or the like, consisting of a cylindrical bobbin tube and two separately prefabricated disks η, each of which is axially braced by a connecting piece, which can be detachably connected to the bobbin tube by plug connections and can be secured in this position with locking connections, with the run-up ramps that interact with the end faces of the bobbin tube Latching projections on the connection piece and the notches cooperating with the locking projections are arranged in the bobbin tube, the notches also being designed as breakthroughs and the connection pieces being made of elastically flexible material, characterized by the following features: 1 ι ♦ nt '»· Pilthaut 8133/83 a. the end parts of the bobbin tube (1) are in the nozzle (2 + 3) under elastic The widening of this can be plugged in and can be placed on the inside of the socket without play b. the locking projections (6) strive from the, itutzen (2,3) directed inwards and c. the nozzle (2,3) and the bobbin tube (1) are each undivided in the circumferential direction educated. 2. Coil according to claim 1, characterized in that the bobbin tube (1) made of elastically resilient Material. 3. Coil according to claim 1 or 2, characterized in that that in the connecting piece (2,3) with the free end faces of the bobbin tube (1) corresponding Insertion limit stops (8) are arranged. I t M ft I i t ( lit I lift ' Mill I I Il Ii · <t I Il ItII I > I I I I 14 · i i i Il I I Hi I III! ti ' 1 114 1 IJIII FilthaUÜ - 3 Coil according to one of Claims ί to 3, characterized in that the Einsteckbegrenzungs ^ stop (8) each as a circumferential shoulder are trained. Coil according to one of Claims 1 to 4, characterized in that the inwardly aiming locking projections (6) in each case in the disks (2, 3) opposite to the latter arranged openings with the same profile 6. Coil according to one of claims 1 to 5, characterized in that the locking projections (6) from the inside of the connecting piece (2, 3) in the circumferential direction mutually aligned, inwardly rising ramps for each of them Opposite breakthrough edge parts of the bobbin tube forming and inclined flanks (9) to have. DlPL-lNG.'CONRAD KöCtfLlNG PATENT ADVOCATE