GB2245603A

GB2245603A - Yarn winding: donning and doffing

Info

Publication number: GB2245603A
Application number: GB9113715A
Authority: GB
Inventors: Luigi Minto; Franco Bianchi
Original assignee: RIVA OFF MEC; Officine Meccaniche Riva Srl
Current assignee: RIVA OFF MEC; Officine Meccaniche Riva Srl
Priority date: 1990-06-27
Filing date: 1991-06-25
Publication date: 1992-01-08
Also published as: GB9113715D0; FR2663916B1; IT1242650B; DE4121325A1; IT9083413A1; FR2663916A1; IT9083413A0

Abstract

In a continuous filament yarn processing machine, yarn winding stations are disposed in tiers. Each station has a drive roll 20 and a pivotable bobbin cradle 17. At each station, frame 25, 23, 26 carries sloping guide 28 and oppositely-sloping guide 29 for guiding empty bobbin tubes 27 to the cradle, and also carries sloping full-bobbin guide 38. Guide 40 is extendable to catch the released bobbin, and carries elastic element 43 to slow and control the descending released bobbin. Pivotal stop lever 33 holds a bobbin tube, and is released by rising cradle arm 21 raising lever element 36. Externally operated pivotable lever 44 holds a full bobbin on guide 38. For adjacent winding stations in one row, frames 25, 23, 26 back one another in mirror image relationship. <IMAGE>

Description

- - - - 1 -.i c ------ -- - 1 A DEVICE FOR AUTOMATICALLY DISCHARGING

BOBBIN PACKAGES The subiect-matter of this invention i s a device for autamatically dischargincr babbin packages.

more particularly. subject-matter of this invention is a device adapted. for application to every storage unit for textile packages in order to have said packages removed automatically, fresh supports for said packages loaded automatically, and a new yarn collecting cycle started.

The device way be applied to all bobbin or cone winders.. but is particularly intended for continuous filailient yarn pr(-)cessiiiq machines, such as textl.trj.zers and dris,;-texti.trizers.. thounh not limited thereby.

Known from the state of the art are a number of devices operative to automatically discharge packages being wound on bobbin or cone winders or makers of some other comparable packages.

Said devices are usually of two types, that Is a type operative to traverse the machine for serving several production units, and'a fixed type serving each production unit on an individual basis.

These prior device types have been both developed essentially for operation on machines which process discontinuous fiber yarns, whether natural or chemical in nature.

The Applicant is aware of no automatic devices as outlined hereinabove which can operate on macnines processing contintious filament varns. such as the texturizers and draw-texturizers referred to hereinafter.

The design of these machines and the yarns processed thereon pose substantially different problems from those encountered in the instance of discontinuous fibers.

The Applicant has developed, tested, and made a device for automatically discharging bobbins, particularly uneful with continuous filament yarns, The invention is defined in claim 1.

The sub-claims define additional characteristics of the invention.

The device of. this invention comprises an assembly individually fitted to every storage unit of a yarn being processed.

said assembly includes means of removing the completed bobbins, said bobbins being then taken to a standby position made accessible to the machine operator.

Said remover mea3119 conventional bobbin-holdina arms co-operate with as provided on the yarn storage units.

The inventive device also includes means for storing and supplying empty supports or tubes for windina new bobbins.

The winding tkibe is first brought to a standby position on said supply storage means.. and then transferred t(.) the arm tilpon a previc-nisly compieted bobbin leaving said arm.

The device. of this invention is also arranged to co-operate with for severing, pickilics up, and holding the yarn in a pre-determined position during the full bobbin discharge steps, as well as with means for taking said yarn back to an empty tube to initiate a fresh bobbin winding cycle.

It should be noted that on such machines as texttiriz"ers the yarn would be fed continuously even during missed yarn picking tip steps.

The full bobbilis can be discharged from the standby position. and the empty ubes loaded, manually by the operator but this device is also adapted for with any automated provisions for carrying out the operation.

These avid other features of the jj-1vention will become more clearly apparent hereinafter.

Reference will be made to the accompanying illustrative and nonlimitative drawings.. wherein:

Figure 1 shows schematically an operator machine to which the device of this invention can be incorporated; Figure 2 is a side view of one embodiment of this invention; Figure 3 is a detail front view of Figkire 2 in the direction of arrow A; Figure 4 is a detail front vIew of Figure in the direction of arrow B; Fiatire 5 is a detail front view of Figure in the direction of arrow C; Figure 6 sli(,.)ws in plan view a detail of Figure 2; and Figure 7 is a detail front view of Figure 2 in the direction of arrow D.

2 shown diagratitatically in Figure 1 is a draw-texturizer 10 having two separate processing rails. each provided with a creel 11 for feed bobbins 12. a first texturizing oven 13, and a second texturizing oven 14.

A yarn 15 being issued from the feed. bobbins 12 is taken frow the first oven 13 to a texturizing spind.le 16. and thence into the. second oven 14, to be finally wound around package bobbins 17 on their respective storacle units. 18.

W1Ale this is the path shown in Fiqxire 1, the yarn 15 may be alternatively taken through just the first ove.n 13 and then to the storage units 18 from above, without going through the second oven 14.

In this embodiment, said storage units 18, which are all identical with one another. are arranged in three tiers to which the yarns 15 are led over suitably diverted paths.

Shown at 19 In Figure 1 are substantially identical overfeed assemblies for the yarn 15, located where their function is, required.

In FiUi.tre 2, the device of this invention is shown incorporated to a storage unit 18 that forms a part of a machine IQ of the type shown in Figure 1.

The storage kinit 18 is known per se and attached to brackets 19 which are provided on each of the machine 10 rails at every bobbin winding position.

said unit 18 has, as its major components, the bobbin-holding ariln 21 and a drive roll 20 for the 1 package bobbins 17.. said roll being linked to a traversinq unit (not shown).

Said bobbin-holding arm 21 is usually C-shaped with the leas of the "C" embracing the package bobbin 17, which bobbin is carried on suitable centers and retained thereby axially during the winding step.

The. device of this inventic.)n inciudes a frame 22 havinq a substanti ally horizontal upper portion 23, whicli portion is secured.. in this embodiment, on the bracli'%.et 15, of the overlying starage unit 18 -as by means screws 24.

Said frame 22 has two sloping portions, respectively forward 25 and rearward 26 ones.. an which a guide for the empty tubes 27 is anchored.

Said guide comprises a first auide section 28 sloping downwards and inwards of the machine 10, and a second guide section 29 which As connected endwise relatively to said first section 28 and also downwards, but point.,, outwards from the machine Figure 3 is a fragmentary view along in Ficure 2 of the top section of the forward 25 of frame 22, and the first guide section 28.

Said auide section 2-8 has a flance which the tube 27 is supported as indicated by outlines in Figure 3.

slopes 10. arrow A portion on phantom can be seen from Figure 3. the first gxlic3.e section 28 is conficrured symmetrically with respect to the forward portion 25 si.icii that it can qkilde tkibes 27 being processed on coiitiS'.fttr)tts storage units 18.

similar considerations apply to the second guide section 29 as well.

Thus, it will be recognized that, in the embodiment shown.. the device of this invention includes two frame halves 122 (shown at 125 in Figure 3 are the two forward half-portions) siding the storage unit 18 and wherebetween the tubes 27 will run, each half-frame being complementary of the half-fratixes 122 which serve the contictious ones of storage units 1S.

The end. portion of the first guide section 28 has no flanges 30. thereby a tube 27.. being caused to roll along said first section 28, can move to the second quide section 29. as shown at 127 in Figure 2.

The tube 127 can be stopped along the guide 29 by means of a stop assembly 31 located on the guide 29.

said stop assembly 31 may be of a type having a piston 32 arranged to act directly on the tube 127, as shown in the left-hand half of Figure 4, which is a fragmentary view of this assembly taken in the direction of arrow B In Figkire 1.

The tube 127 is also held in place by a lever 33 allowed to rck around a pivot pin 34 which has the function of progressively releasing the tube 127 such that the tube can Position correctly between the centers on the bt..;b):)in-PL(.)ldiiig arin 21.

q;.,-iid lever 33 has two elements 315 and36, respectively, lying to each other, of which a first one 35 contacts the tube 127 endwise, whereas the second 36 cci.tacts the arm 21 via a bias roller 37 thereaf, as shown in Figure 5.

Rotation of the lever 33 about the pivot 34 (as indicated by dash lines in Figure 2) is brought about, as mentioned, by the action of the arm 21 upon the package bobbin 17 reaching a set maximum diameter (position 171 in Figure 2), and the arm 21 is raised automatically.. by conventional means, to take the now full bobbin to a discharge position from the arm 21 (position 1711 in Figure 2).

The forward portion 25 of fraine 22 carries on one end a straight crulde 38... slopincl downwards when viewed in the direction from the machine 10 ceriter outwards, from which an actuator 39 for a guide 40, advantageously of the ttxclc-away type, is arranged to depend.

said tuck-away guide 40 extends parallel to - q - the straight guide 38 thereby,. once driven in the direction of arrow 41 int.o an operative position (indicated by dash lines in Figure 2), it will form an extension of the guide 38 flanges.

In this way, a full bobbin will have its tube supported, on being released from the arm 21.. and drop to a standby position by gravity as indicated at 17111 in Figure 2.

Attached to the top surface of the tuck-away guide 40 is an elastic element 43.. such as a metal reed or the I ike (only shown in Figure 2), which has the functions of first slowing and then controlling the descent of the bobbin to 17111, and (.)f stopping in place a fresh tube 127 moving downwards along the second guide section 23.

Figure 6 shows in plan view a detail of Figure 2, to bring out the actuator 39 for the tuck-away giiide 40 and its respective means 42 of attachment to guide 38.

For holding the bobbin in its standby position 17111 at the end of the vi. tide 3S.. there is provided a retainer asLsembly which depends from the forward portion 25 on the end thereof and comprises a retaining lever 44 rocking about a pivot 45 tinder the action of a bias lever 46,

Claims

1. A device. for automatically discharging bobbin packages.. adapted for application to every storage unit (18) an textile machines (1o) in order to have full bobbins (17) removed therefrom and fresh tubes (27) loaded to form subsequent packages, characterized in that it comprises a pair of supports (22) siding in mirror-image relationship a respective one of the storage units (18), said supports (22) including first guide means (28) disposed for supplying and moving said empty tubes (27), second gluide means (29) connected to and underlying said first guide means (28) and being provided with means (31..35) for temporarily stopping said tubes (27), third guide means (40) disnosed for running removal of a full bobbin (17) from its. respective bobbin-holding arm (21), fourth guide means (38) for taking the full bobbin (17) to a standby position (171''), in said standby position (17''') there beina provided means (44,46) of temporarily stopping the bobbin (17) which are actuatable from outside (47).

2. A device as claimed in claim 1, characterized in that each support (22) is made up of two halves (122) serving contiguous storage units, (18).

3. A device as claimed in either Claim I or 1 i i scope of the inventioli ats, claimed hereinafter, CLAIMS 1. A device. for automatically discharging bobbin packages.. adapted for application to every storage unit (18) an textile machines (1o) in order to have full bobbins (17) removed therefrom and fresh tubes (27) loaded to form subsequent packages, characterized in that it comprises a pair of supports (22) siding in mirror-image relationship a respective one of the storage units (18), said supports (22) including first guide means (28) disposed for supplying and moving said empty tubes (27), second gluide means (29) connected to and underlying said first guide means (28) and being provided with means (31..35) for temporarily stopping said tubes (27), third guide means (40) disnosed for running removal of a full bobbin (17) from its. respective bobbin-holding arm (21), fourth guide means (38) for taking the full bobbin (17) to a standby position (171''), in said standby position (17''') there beina provided means (44,46) of temporarily stopping the bobbin (17) which are actuatable from outside (47).

3. A device as claimed in either Claim I or 1 2, characterized in that said first guide means (28) slope downwards and inwards of the machine (10).

4. A device as claimed in any of the preceding claims, characterized in that said second guide means (29) slope downwards and outwards of the machine (10).

5. A device as claimed in any of the precedinp claims, characterized in that said first guide means (26) have a transfer section for transferring an empty tube (27) to said second guide means (29).

6. A device as claimed in any of the preceding claims, characterized in that said temporary stop means (31) are piston means (32) acting on the tube (27).

7. A device as claimed in any of the preceding claims, characterized in that said temporary stop means (35) are lever means (35.36) acting on the tube (27) and being driven by the bobbin-holding arm (21).

8. A device as claimed in any of the preceding claims, characterized in that said third guide means (10) are advantageously tuck-away means.

9. A device as claimed in any of the preceding claims, characterized in that said third guide means (40) have a respective actuating member (39).

10. A device as claimed in any of the preceding claims, characterized in that said third guide means (40) have elastic means (43) adapted to cooperate with empty tubes (27) and full bobbins (17).

11. A device as claimed in any of the preceding claims, characterized in that said third guide means (40) are connected to and p(.)sitionable in line with said fourth ctuide means (38),

12. A device as claimed. in any of the preceding claims, characterized in that i,,-,,aid temporary stop means (44,46) for the full bobbins (47) can be operated manually or automatically.

13. A device as claimed in any of the preceding claims, characterized in that it Is adapted to co-operate with automated means of taking the full bobbins (17) out of their standby position (17.. and feeding empty tubes (27).

14. A device as claimed in any of the precedina claims, characterized in that it is adapted te) co-operate with severing mearis (48), suction means (49), and picking means (50) for the severed end of a yarn (15P at each exchange of a full bobbin (17) and on startincr a fresh winding cycle.

IS. A device for automatically discharging bobbin packages substantially as hereinbefore described and illustrated in Figures 2 to 7 of the accompanying drawings, optionally in conjunction with Figure 1.

Published 1991 at The Patent Office, Concept House, Cardiff Road, Newport, Gwent NP9 1RH. Further copies may be obtained from Sales Branch, Unit 6, Nine Mile Point. Cwmfelinfach. Cross Keys. Newport. NPI. 7RZ. Printed by Multiplex techniques lid, St Mary Cray. Kent.