GB2226337A - Inserting ring travellers into the rings of spinning or twisting machines - Google Patents

Description

1 DEVICE FOR INSERTING RING TRAVELLERS INTO THE RINGS OF SPINNING OR

TWISTING MACHINES The invention relates to a device for inserting rings or travellers into a ring of a spinning or twisting machine. Known devices are constructed with a hand-held housing on which a traveller mandrel is secured for the reception of a plurality of travellers which are to be fitted. A separator device presents the travellers singly from the traveller mandrel to the machine ring.

The known devices of this kind have the disadvantage that efficient handling depends upon the individual skill of an operator and thus frequent failed attempts and unnecessary great widenings of the ring travellers occur. Distortion or deformation of the ring travellers beyond the permissible elastic limit, makes the ring travellers useless. Proposals for making devices for the insertion of ring travellers more independent of individual handling, due to the fact that the insertion operation is carried out by means of pistol-type trigger levers, have the disadvantages that the entire device becomes very expensive and heavy, so that the operator's hand fatigues rapidly.

This invention seeks to develop a new device for the insertion of ring travellers of the above-described kind which is largely independent of the individual skill of 2 the operator, so that the probability of incorrect operations is considerably reduced. In accordance with the invention there is provided a device for the insertion of ring travellers into the ring of a spinning or twisting machine; said device comprising a housing carrying a traveller mandrel for the reception of a plurality of travellers, a separator device which presents the travellers from the traveller mandrel to the machine ring individually in succession, a support strip displaceably mounted to the housing which can be laid upon the machine ring the strip having a support edge which engages throughout the insertion operation upon the ring surface, and stop means which applies itself to the ring and determines the longitudinal position of the support strip. This unique strip with its support edge lying on the ring surface during the whole insertion operation provides a secure association of the device with the machine ring. In this respect, the skill of the operator is excluded and the probability of incorrect actuations is avoided. An especially secured positioning in length is achieved in that the stop means on the support strip is formed as a nose grasping from the interior behind the ring. If then, according to a further feature of the invention, the support strip is displaceable against a force-storage means, preferably a tension spring, in relation to the housing, the traveller insertion opera- 3 tion can be triggered by a simple pulling movement on the housing. Thus special trigger levers and the necessary mechanisms become superfluous.

According to a further feature of the invention, the traveller mandrel which is preferably fixedly mounted on the housing, is guided with its forward end, turned towards the ring, to just in front of the support strip, so that the ring traveller to be inserted already grips from the ring interior behind the ring flange, when the device is applied to the ring, and is drawn from the interior over the ring flange by the pulling movement on the handle. In order to achieve a secure positioning of the ring traveller, a traveller stop lever can be displaceably mounted in relation to the support strip and arranged_between the forward end of the traveller mandrel and the support strip. This stop lever is preferably mounted displaceably in dependence upon the position of the support strip and thus, in the pulling movement of the handle, releases the traveller for insertion into the ring. In this case it can be especially advantageous if the traveller stop lever is mounted on the housing and is displaceable in connection with a slideway slide block so that on the one hand it releases the ring traveller in good time, without it being widened undesirably far, but on the other hand the forward end of the traveller mandrel is closed before the removal of the device from the ring, so that no ring traveller is lost.

4 A further measure for the improvement of the functional reliability of the device and for avoiding the individual skill of the operator is the provision of a clip spring at the forward end of the traveller mandrel. This clip spring releasably holds the forward traveller so that the ring traveller released for the insertion operation by the separator device on the one hand is held ready in the most favourable insertion position, but on the other hand is also released at the right time. In this case it can be advantageous if the traveller clip spring is secured to the housing and is releasable by the relative movement between housing and support strip. For the release of the traveller clip spring,a dog can be arranged on the support strip to remove the traveller clip spring sufficiently far from the forward end of the traveller mandrel, against its spring force, and to release it again after the next ring traveller to be inserted has slid forward.

In order to.improve the security of the feed of the ring travellers to the forward end of the traveller mandrel it is advantageous if the traveller mandrel, at least in its forward region, is inciined in relation to the support edge or the ring surface at an angle of between 120 and 300, preferably about 210. Additionally, the cross-section of the traveller mandrel can be made to gradually reduce at its forward end, at least in the region of the traveller clip spring.

In the case of known devices for insertion of ring travellers having a separator device which presents the travellers from the traveller mandrel singly to the ring, difficulties arise repeatedly in the region between the separator device and the forward end of the traveller mandrel sice the ring travellers do not slide securely enough, for example, as a result of soiling. Where the travellers are C-shaped rings the movement can be improved according to a further feature of the invention in that the traveller mandrel has a recess at its forward end, at least as far as the region of a traveller blocking nose limiting the forward motion of the travellers. The recess faces the main bodies of the travellers so that the travellers rest on the traveller mandrel only with their two ends which form sliding feet. In this way the area of contact of the travellers with the traveller mandrel is reduced and thus the sliding capacity of the ring traveller is increased.

Various separator devices have already been proposed for devices for the insertion of ring travellers, which however were not always adequate for the practical requirements of textile production. This is improved according to the invention by a separator device in which the traveller blocking nose limiting the traveller forward motion and a traveller separator nose separating the forward traveller from the remaining supply of travellers 6 are allocated to the traveller mandrel. Here the traveller separator nose can be allocated to that side of the traveller mandrel where the traveller opening is situated, and can be movable through a slot in the traveller mandrel to behind the back of the forward traveller. The traveller separator nose is preferably formed so that on the side facing the forward end of the traveller mandrel it has a slope portion which is formed so that it imparts, to the traveller released by the traveller blocking nose, a thrust in the direction towards the forward end of the traveller mandrel. The ring traveller thus slides not only due to its own force of gravity as far as the forward end of the traveller mandrel, but also under additional impulse which increases the certainty of the forward sliding and the traveller speed.

In order to ensure a satisfactory function of the separator device it is advantageous if the traveller blocking nose is mounted displaceably in relation to the traveller separator nose, for the traveller width setting.

In accordance with a further. feature of the in-,-ention the mountings of the traveller blocking nose and the traveller separator nose are connected with two mutually opposite clamping jaws, between which a pattern traveller can be clamped for the purpose of width setting. This makes separate measurement system 7 superfluous. The clamping in of the Pattern travellers between the two clamping jaws takes place especially simply if the two clamping jaws are biased against one another by spring force.

Especially in the case of wear phenomena it can occur that a ring traveller jams with the traveller stop lever at the forward end of the traveller mandrel, so that it has to be cleared by hand. In order to facilitate this, according to a further feature of the invention the traveller stop lever can be displaceable out of the support region of the traveller by means of a manually actuable slider. An especially simple configuration of the entire device can be achieved if the slider serves at the same time for opening the clamping jaws between which a pattern traveller is clampable for the purpose of width adjustment of the separator device. In order, however, to avoid the possibility that in the removal of a jammed ring traveller from the forward end of the traveller mandrel or of the traveller stop lever the pattern traveller for the width setting falls out at the same time between the clamping jaws, the slider can be displaceable in different directions for the actuation of the traveller stop lever and for the opening of the clamping jaws.

The invention may be understood more readily with reference to an exemplary embodiment as represented in the accompanying drawings, wherein:- 8 Figure 1 is a perspective lateral elevation of a device constructed in accordance with the invention; Figures 2 to 10 depict different individual parts of the device; and Figures 11 to 13 show different positions in the insertion of a ring traveller in a machine ring.

As Figure 1 shows, a device for the insertion of ring travellers 3 which are here C-shaped into the ring4 of spinning or twisting machines has a housing 1 also serving as handle. A.traveller mandrel 2 for the recepton of several travellers 3 is secured to the housing 1. A separator device 5, with a traveller separator nose 217 and a traveller blocking nose 28 presents the travellers 3 from the traveller mandrel 2 singly to on the associat.ed ring 4 as shown in Figures 11 to 13. The housing 1 is provided with a displaceably mounted support strip 6 layable upon the ring 4, with a support edge 7 (Figure 6) lying on the ring surface throughout the insertion operation and a stop 8 which applies itself to the ring 4.and determines the longitudinal position ef the support strip 6. This stop 8 on the support st-rip 6 is formed as a nose which grasps from the interior behind the ring 4, as may be seen clearly from Figure 6 and Figures 11 to 13.

The support strip 6 is displaceable in relation to the housing 1 against the force of a tension spring 9. It can further be seen in Figure 1, that the traveller 9 mandrel 2 is guided with its forward end 2a, facing the ring, to the front of the support strip 6. Between the forward end 2a of the traveller mandrel 2 and the support strip 6 there is arranged a traveller stop lever 10 mounted displaceably in relation to the support strip 6. A clip spring 12 allocated to the forward end 2a of the traveller mandrel 2 serves to detachably hold the forward traveller 3a by means of a dog 13. In order not to impair the clarity of lay-out of the entire device in Figure 1 further details of individual parts are represented in Figures 2 to 10.

In Figure 2 there is seen the housing 11 which is made in box form. To simplify assembly the housing I is not made from one piece as far as the forward end of the device. Instead, a forward housing part la (Figure 6) is secured to the main housing 1 by means of the screws 15 and 16. A screw 17 serves for the retention of a bolt 18, the channel 18a of which serves to receive the rear end 9a (Figure 4) of the tension spring 9. The forward end 9b of the spring 9 is hooked into a bolt 19 (Figure 6) secured to the support strip 6. In Figure 2 there are two screws 20 and 21, which engage in bores 20a and 21a (Figure 5) of lugs 22 and 23 secured to the traveller mandrel 2, so that the traveller mandrel 2 is secured to the housing 1. At the forward end of the housing I there is a threaded bore 24, into which a screw 25 can be screwed to secure the traveller separator nose 27 to the housing 1 by means of a clip plate 26. The traveller separator nose 27 is made as a metal piece connected with a spring strip 29 but it is possible to use an integral strip part bent in accordance with the contours of the metal piece and the spring strip 29. The traveller separator nose 27 has at the side facing thee forward end of the traveller mandrel a slope portion 30 which, as explained hereinafter, imparts an additional thrust to a traveller 3 separated from the traveller supply, in the direction towards the forward end of the traveller mandrul 2.

Figure 3 shows the traveller stop lever 10, the forward end 31 of which shaped to form a nose. A clamping jaw 33 is secured to the lever 10. The jaw 33 has a threaded bore 32, into which a screw 72 (Figure 8) inserted through a bore 32a (Figure 6) in the traveller stop lever 10 can be screwed in order to secure the clamping jaw 33 to the traveller stop lever 10. The clamping jaw 33 co-operates with a clampii;g jaw 34 mount ed displaceably on a screw 67 against the force of a spring 35. The jaws 33,34 permit the clamping-in of a pattern traveller 36, for the purpose of width setting of the separator device 5. A screw 40 is inserted through a bore 39 in the clamping jaw 34, to engage through a bore 41 of a strip 42 provided with the traveller blocking nose 28 and into a threaded bore 43 of a retaining plate 11 44. In this way the screw 40 fastens the strip 42 with the traveller blocking nose 28 on the clamping jaw 34.

Figure 5 shows the traveller mandrel 21 which has a forward end region 2a which, is tapered, i.e. its crosssection is made to gradually reduce. At the rear end of the traveller mandrel 2 is a blocking spring 45 which is intended to prevent travellers 3 sliding away out of the traveller supply to the rear of the traveller mandrel 2. At the forward end region 2a of the traveller mandrel 2 there is a recess 46 and a slot 47, through which the traveller separator nose 27 can penetrate, as explained with reference to Figures 11 to 13. The recess 46 can take other forms, such as a depression in the traveller mandrel 2. The travellers 3 only have their ends or feet engaging with the traveller mandrel 2, in order to render easier sliding of the travellers 3 along the traveller mandrel 2 while their main bodies or backs 48 overlie the recess 46. The recess 46 advantageously reaches at least approximately to the region of the traveller separator nose 27, or in the case as illustrated as far as the slot 47.

Figure 6 shows how the forward-housing part la, the support strip 6 and the traveller stop lever 10 are assembled together. As already mentioned in the description of Figure 2, the housing part la is secured on the housing 1 by means of the screw 15 engaging in the threaded bore 15a. For additional stabilisation the

12 screw 16 conducted through the bore 16a, can engage in a threaded bolt 50. The end of this bolt 50 facing the screw is tapered to the diameter of a bore 51 in the traveller stop lever 10, with a fit which renders possible pivoting of the traveller stop lever 10 about the bolt 50.

A further bore 52 of the housing part la receives a clip spring holder 53. The holder 53 is secured, for example, by means of a peg 52a having a bore 54 through which a screw 55 engages. The screw 55 penetrates the traveller clip spring 12 via a bore 12a and secures the spring by means of a clamp plate 56 fitting in an aperture 53a of the clip spring holder 53.

In the support strip 6 there is a recess 57 in which a slideaway slide block 11 engages. The block 11 is secured in a bore 58 of the traveller stop lever 10. In a bore 59 in the support strip 6 the dog 13 is secured. This dog 13 co-operates with the traveller clip spring 12 in order to release the travellers 3. In the longitudinal displacement of the support strip 6 in relation to the housing 1 or the forward housing part la, as the case may be, the support strip 6 slides on one hand with its edge 6a on a projection 61 of the forward housing part la and, on the other hand with its upper side 6b on the stepped surface 60 of the housing part la. A bolt 63, secured in a bore 62, slides in a slot 64 in the housing 1 C 13 part Ia. On the support strip 6, between the support edge 7 and the stop 8, there is a recess 65 into which the thread can be hooked, when the traveller is inserted into the ring.

Figure 7 shows individual parts of the clamping jaws 33 and 34 and Figure 8 the co-operation of the clamping jaws 33 and 34 with the traveller stop lever 10. it can be seen, especially from Figure 8, that the clamping jaw 33 is secured to the traveller stop lever 10 by means of a slider 72 guided through the bore 32a (Figure 6) of the traveller stop lever 10 and screwed into the threaded bore 32. The clamping jaw 34 can slide with a recess 66 on the traveller stop lever 10. In this action it is guided by the shank of the screw 67 which can be screwed through the bore 68 into a threaded bore 69 in the clamping jaw 33. The spring 35 which presses the clamping jaws 33 and 34 against one another is situated on the shank of the screw 67. Two bolts 70 and 71, which can be inserted into bores of the clamping jaw 34, serve for the displacement of the traveller separator nose 27, as will be explained with reference to Figures 11 to 13.

Figures 9 and 10 show the co-operation between the housing 1 or its forward part la, the support strip 6 and the traveller stop lever 10 with its forward end 31, in two different movements phases. Here Figure 9 represents the initial situation in the setting of the device upon the ring 4 and Figure 10 an intermediate position during 14 the insertion operation, similar to the depicted in Figure 12. For the sake of clarity, in Figures 9 and 10 the forward elements of the device as for example the traveller mandrel 2, the clamping jaws 33 and 34 and the separator device 5, are omitted. On comparison of Figures 9 and 10 it is seen clearly how the support strip 6 is pushed over the forward housing part la. The slide block 11 has slid upwards in the recess 57 and has lifted the traveller stop lever 10, so that its forward end 31 was able to release one of the travellers 3 for setting upon the ring 4. On further traction upon the housing the dog 13 will lift the traveller clip spring 12 secured by means of the clip spring holder 53 to the housing, so that this traveller clip spring 12 is released by the relative movement between the housing and the support strip 6. Thus the clamped-in traveller 3 is released and a new traveller can slide on to the forward end 2a of the traveller mandrel 2. In the case where a traveller has jammed on the forward end of the traveller mandrel 2., the traveller stop lever 10 and particularly its forward end 31 can also be shifted by hand. In order to render this possible the clamping jaw 34, mounted according to Figures 7 and 8 with its recess 66 on the traveller -stop lever 10, is prolonged downwards, so that this end can serve as the slider 72, when pressure is exerted upon it in the direction of the illustrated arrow 73. Here, 1.

however, the pressure upon the clamping jaw 34 is not varied by the spring 35, so that the pattern traveller 36 remains clamped in. Only when the slider 72 is displaced against the force of the spring 35 can the pattern traveller 3 fall out and another pattern traveller 3 be inserted. Due to the fact that the slider 72 is displaceable in different directions it can thus serve equally for the actuation of the traveller stop lever 10 and/or for the opening of the clamping jaws 33 and 34.

The manner of working of the device according to the invention is to be explained by reference to Figures 11 to 13. In these Figures there is seen the ring 4 grasping around the forward end of a spinning cop 74, on to which ring the support strip 6 is laid with its support edge 7, as described with reference to Figure 6 The spinning thread F is hooked into the recess 65 described in Figure 6, and thus is situated within the forward traveller 3a to be inserted. After release of the traveller 3a by the traveller blocking nose 28 pertaining to the separator device 5, the traveller 3a slides forward on the traveller mandrel 2, which is inclined in relation to the horizontal at an angle 14 of preferably 210. The traveller 3a moves to the front end 31 of the traveller stop lever 10. In this position the traveller 3a is held by the traveller clamping spring 12 on the traveller mandrel 2.

In Figure 12 a working step is shown with the part 16 detail enlargement of Figure 12a, in which step the housing is already displaced somewhat in the direction of the arrow 75. The stop 8 of the support strip 6 has thus placed itself against the inner edge of the ring 4 and the end 31 of the traveller stop lever 10 is lifted. Thus between the forward end 2a of the traveller mandrel 2 and the support strip 6 a space is made free through which the traveller 3a can slide down from the tapered forward end region 2a of the traveller mandrel 2, as soon as the forward end region 2a of the traveller mandrel 2 has drawn the traveller 3a over the outer edge of the ring. By the configuration of the recess 57 for the control of the slideway slide block 11 it is made certain that the traveller clip spring 12 is opened by the dog 13 at the right time, so that the forward traveller 3a can slide away from the forward end of the traveller mandrel 2 without being over-stretched.

By the lifting of the traveller stop lever 10, however, the traveller blocking nose 28 secured indirectly to it according to Figure 3 is also lifted, so that the next traveller 3b can slide downwards. Since after the lifting of the traveller stop lever 10 the two bolts 70 and 71 are also lifted, the traveller separator nose 27 is thereby also conducted through the slot 47 (Figure 5) and places itself before the back of the following traveller, so that a further advance of 1 7 travellers out of the traveller reserve is prevented. At the same time, as already depicted in Figure 2, the slope 30 of the traveller separator nose 27 has imparted to the previously released traveller 3b an additional push in the direction towards the end of the traveller mandrel 2.

Finally Figure 13 shows the position of the individual parts of the device at the end of the drawing movement. It is seen that the traveller 3a is correctly set upon the ring 4. The traveller blocking nose 28 has laid itself before the supply of travellers and prevents the sliding down of further travellers, since the traveller separator nose 27 has returned into its initial position. The next traveller 3b to be applied could slit'e on the forward end region 2a of the traveller i.-indrel 2 forward to the traveller stop lever 10, since the traveller clip spring 12 is raised. As the device 5 is lifted away from the ring 4, the tension spring 9 draws back the support strip 6, the slideway slide block 11 slides in the recess 57 into its initial position as represented in Figure 9 and the traveller clip spring 12 can hold the traveller 3b fast, as represented in Figure 1, on the forward end region 2a of the traveller 2. It is seen that the clamping jaws 33 and 34 do not move during the whole insertion operation. Thus the pattern traveller 36 remains clamped- in and the distance between the traveller blocking nose 28 and the traveller separator nose 27 remains constant in accordance with the 1 1 18 traveller width.

The example of embodiment of the invention as described here for the insertion of C-shaped travellers can be modified in various details, especially for other traveller forms too, without departing from the spirit and scope of the invention.

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Claims (23)

1. Device for the insertion of ring travellers into the ring of a spinning or twisting machine said device comprising a housing carrying a traveller mandrel for the reception of a plurality of travellers, a separator device which presents the travellers from the traveller mandrel to the machine ring individually in succession, a support strip displaceably mounted to the housing which can be laid upon the machine ring, the strip having a support edge which engages throughout the insertion operation upon the ring surface, and stop means which applies itself to the ring and determines the longitudinal position of the support strip.

2. A device according to claim 1, wherein the stop means is formed as a nose grasping inwards behind the ring.

3. A device according to claim 1 or 2, wherein the support strip is displaceable in relation to the housing against a force-storage means, preferably a tension spring.

4. A device according to any one of claims 1 to 3, wherein the traveller mandrel is guided with its forward ( 1) k end, facing the ring, to the support strip.

5. A device according to any one of claims 1 to 4, wherein a traveller stop lever is mounted displaceably in relation to the support strip and is arranged between the forward end region of the traveller mandrel and the support strip.

6. A device according to claim 5, wherein the traveller stop lever is mounted for displacement in dependence upon the position of the support strip.

7. A device according to claim 5 or 6, wherein the traveller stop lever is mounted on the housing and is displaceable in connection with a slideway slide block.

8. A device according to one of claims I to 7, and further comprising a traveller clip spring for detachably holding the forward traveller.

9. A device according to claim 8, wherein in the traveller clip spring is secured to-the housing and is releasable by relative movement between the housing and the support strip.

10. A device according to claim 9, wherein a dog is arranged on the support strip for the release of the 21 traveller clip spring.

11. A device according to any one of claims 1 to 10, wherein the traveller mandrel is inclined in relation to the support edge of the support strip at an angle of between 120 and 300, and preferably about 210.

12. A device according to any one of claims 1 to 11, wherein the crosssection of the forward end region of the traveller mandrel is made gradually decreasing.

13. A device according to any one of claims 1 to 12, and further comprising a traveller blocking nose for limiting the traveller feed motion and a traveller separator nose for separating the forward traveller from the remaining supply of travellers.

14. A device according to claim 12, wherein the travellers are C-shaped rings and the traveller mandrel possesses a recess at its forward end region extending, at least approximately as far as.the region of the traveller separator nose, so that the travellers rest on th traveller mandrel only with their two ends which form sliding feet.

1 I 22

15. A device according to any one of claims 1 to 14, wherein the traveller separator nose is allocated to that side of the traveller mandrel on which the openings in the travellers are situated and is movable through a slot in the traveller mandrel to behind the back of the forward traveller.

16. A device according to claim 13, 14 15 or 16, wherein the traveller separator nose possesses a sloped portion on the side facingthe forward end region of the traveller mandrel the sloped region serving to impart to a traveller released by the traveller blocking nose, a thrust in the direction towards the forward end region of the traveller mandrel.

17. A device according to any one of claims 13 to 16, wherein the traveller blocking nose is mounted displaceably in relation to the traveller separator nose for traveller width adjustment.

18. A device acc9rding to claim 17, wherein in that the mountings of the traveller blocking-nose and the traveller separator nose are connected with two mutually opposite clamping jaws, in between which a pattern traveller can be clamped for the purpose of width setting.

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19. A device according to claim 18, wherein the two clamping jaws are biased against one another by means of spring force.

20. A device according to claim 5 or any one of claims 6 to 19 when appended to claim 5, wherein the traveller stop lever is displaceable out of the support region of the traveller by means of a manually actuable slider.

21. A device according to claim 19 when appended to claim 5, wherein the traveller stop lever is displaceable out of the support region of the traveller by means of a manually actuable slider, the slider serving also for the opening of the clamping jaws.

22. A device according to claim 21, wherein the slider is displaceable in different directions for the actuation of the traveller stop lever and for the opening of the clamping jaws.

23. A device substantially as described with reference to and as illustrated in any one or-more of the Figures of the accompanying drawings.

Published 1990 at The Patent Office. State House. 6671 High Ho- oorn. London WC1R 4TP. Further copies maybe obtainedfrom The Patent Office. Wes Branch. St Mary Cray. Orpington. Kent BRS 3. Printed by Ylult4jllex techniques ltd, St Mary Cray, Kent. Con. 1'57