CN100408738C

CN100408738C - Device for holding brake holding element support in weft yarn feeder

Info

Publication number: CN100408738C
Application number: CNB031034950A
Authority: CN
Inventors: P·乔瓦尼
Original assignee: LGL Electronics SpA
Current assignee: LGL Electronics SpA
Priority date: 2002-02-01
Filing date: 2003-01-30
Publication date: 2008-08-06
Anticipated expiration: 2023-01-30
Also published as: EP1334941B1; ITTO20020023V0; DE60300425T2; ITTO20020023U1; DE60300425D1; CN1435519A; EP1334941A1

Abstract

The brake holder support in a weft feeder is rigidly coupled to a slider, which is supported, so that it can perform a rectilinear motion, by a stationary arm and is integrally provided with a female thread element in which a screw for adjusting the movements of the slider is engaged, the screw being constituted by the end portion of a pivot, which is supported so that it can rotate and perform an axial translational motion in a bushing rigidly coupled to the stationary arm. The device includes a slack-adjustment member, which can perform a radial translational motion with respect to the pivot and has an end portion that can be inserted in a retention groove formed on the pivot, the end portion and/or the retention groove having a substantially trapezoidal cross section.

Description

Be used for keeping the device of the brake keeper bearing of weft yarn feed arrangement

Technical field

The present invention relates to be used for keeping the device of brake keeper bearing at the weft yarn feed arrangement of textile machine.

Background technology

As known, the weft yarn feed arrangement comprises a stationary magazine creel, and a cursor has been reeled the multi-turn weft yarn thereon to constitute the weft yarn deposit.When loom needs, all circle weft yarns just from the tube unwinding get off and pass a mechanical tension of controlling weft yarn and be fed into described loom to keep its substantially invariable brake apparatus.Brake apparatus is made of the truncated cone that a compound synthetic material of usefulness is made usually, a brake keeper bearing flexibly is pushed into it with the tube front portion and engages contiguously, flexibly engaging weft yarn for the purpose of braking, this weft yarn passes on the cylindrical surface of tube and part that front surface combines in its unwinding campaign.Brake keeper bearing comprises the bearing of an annular, and radially pendulum spring engages with this annular ledge at one end place, and the other end of described spring links to each other with brake apparatus at the smaller cross-sectional area place of the truncated cone of brake apparatus.As from the European patent EP 0826619 that proposes with the name of same Applicant as can be known, brake keeper bearing is connected to a sliding shoe in order to regulate the static tension force on the weft yarn, this sliding shoe is parallel to the fixed arm supporting that an axis is provided with by one, can carry out rectilinear motion.An inner thread piece integrally is connected on the sliding shoe, and an adjusting screw(rod) is engaged in wherein; Described adjusting screw(rod) is made of the threaded end of a pivot, an adjusting knob is connected on this pivot, by described adjusting knob, just can rotate adjusting screw(rod) and accurate mobile sliding shoe, and therefore accurate mobile brake keeper bearing, act on static tension force on the tube with regulating brake, and therefore regulate described brake braking degree that weft yarn applied.For the ease of cleaning, replacement and/or the maintenance of weft yarn feed arrangement, be provided with a pivot and keep system, it allows to throw off described pivot fast and need not activation knob; Thereby this causes brake keeper bearing to shift to the outside of feed arrangement and brake is moved apart this tube.For this purpose, one integrally is connected the fixed bushing rotatably support pivot on the fixed arm so that it can carry out axial translation moves, the end of pivot is positioned at a helical spring inside, this helical spring is contained in the fixed pedestal of a fixed arm and acts on the inner thread piece, and its activates sliding shoe and brake keeper bearing to move to the position of a disengagement.Usually, being connected an actuating by an integral body leaves ring support on the part (leaver) and prevents such moving, this actuating is left part and is loaded on the fixed arm pivotally and the effect of bearing a spring at one end place, and this spring keeps support to be embedded in the maintenance groove that is located on the pivot usually.Leave on the part by acting on, support from groove throw off and whole regulating system therefore carry out one rapidly, put the translational motion of brake in disengaged position.

This system is not impeccable, its first shortcoming is, engage and the disengagement operation in order to finish not too difficultly, and because the existence in coating zone, it just need and keep the connection between the groove that sizable play is provided for ring support, about 0.5 millimeter, and this tangible inaccuracy that can cause brakes to be regulated.

Another shortcoming of known system is, it only relies on the irreversibility of screw rod and nut mechanical performance that brake apparatus is fixing on the throne, this non-expectation that makes device be easy to take place adjusting knob is moved, and for example this may take place in the process of the various parts of maintenance or cleaning weft yarn feed arrangement.

Actuating is left part when unclamp operation is conveniently carried out, and the impact of non-expectation also easily takes place, and this may cause undesirable brake to be thrown off, thereby and need repeat correct operation.

Summary of the invention

Therefore, target of the present invention is more high-precisionly to be used to keep the device of brake keeper bearing to eliminate above-mentioned shortcoming by providing a kind of adjusting that makes brake apparatus to have.

An object of the present invention is, a kind of device that is used to keep brake keeper bearing that wherein can fixedly be considered to the application position of the best reliably is provided.

Another object of the present invention is that a kind of device that is used to keep brake keeper bearing that does not have unexpected danger of throwing off is provided.

Another object of the present invention is, the described device that is used to keep brake keeper bearing is provided, so that it is with low cost, make simple and can produce by traditional in the art equipment.

It is more clear that this target and the purpose of these and other can become hereinafter, and they are realized by the brake keeper bearing that adopts following technical scheme:

A kind of device that is used for keeping brake keeper bearing at the weft yarn feed arrangement of textile machine, wherein brake keeper bearing is connected to a sliding shoe rigidly, this sliding shoe is supported can carry out rectilinear motion by a fixed arm, and integrally be provided with an inner thread piece, be engaged with a screw rod that moves that is used for regulating sliding shoe in this inner thread piece, this screw rod is made of the end of a pivot, this pivot suspension becomes it rotatable and can carry out axial translation in an axle bush that is rigidly connected on the fixed arm and move, be characterized in, it comprises a play regulating part, this play regulating part pivot relatively carries out radial translation, and an end that can be inserted in the maintenance groove that is formed on the pivot is arranged, this end and/or described maintenance groove have one and are roughly trapezoidal cross section.

In this device, preferably end and maintenance groove all have one to be roughly trapezoidal cross section.

In this device, preferably adjusting device is a screw, and it is engaged in the screw that radially is formed in the part that is connected to fixed arm rigidly, and is provided with a Frusto-conical end, and this end forms and has the roughly part of trapezoidal cross-section.

In this device, preferably axle bush is formed by an inner surface that is rigidly attached to the tubular body on the arm, and screw is formed in the axle bush.

Preferably this device comprises coaxial line ground and described pivotally connected adjusting knob.

In this device, preferably the play adjustment screw is Alan (Allen) type.

In this device, the end that preferably is used for regulating the screw rod that moves of sliding shoe be contained in rotationally one be formed on the whole transverse wall that is connected of fixed arm in centre bore in.

The accompanying drawing summary

Describe the present invention now in more detail, and show the present invention in the mode of non-limitative example in the accompanying drawings.In these accompanying drawings:

Fig. 1 is a side partial cross-sectional that has according to the weft yarn feed arrangement of the device that is used for keeping brake keeper bearing of the present invention;

Fig. 2 is the enlarged drawing of the thin portion of Fig. 1, shows the drawing in side sectional elevation of the device that is used for keeping brake keeper bearing;

Fig. 3 is the stereogram of a weft yarn feed arrangement, shows the part sectioned view of a thin portion of holding device;

Fig. 4 is the structure side view of this device of, the position that is in disengage brake keeper bearing similar with Fig. 1.

The specific embodiment

With reference to the top accompanying drawing of quoting from, the weft yarn feed arrangement is always by reference number 10 signs, it comprises a fixed pedestal 11 and a stationary magazine creel 12, one hollow and to be rigidly connected to one also be cursor (not shown) coiling multi-turn weft yarn F on this tube of hollow motor reel (not shown), constitutes a weft yarn deposit RT.When loom (not shown) when needing, all circles just from the tube 12 unwinding get off and the mechanical tension that passes a control weft yarn F is fed into described loom to keep its substantially invariable brake apparatus.The character of brake apparatus and the present invention are also uncorrelated; But this paper has related to a kind of known cone brake to simplify narration.Described brake is made of the continuous truncated cone 15 that a compound synthetic material of usefulness is made usually, a brake keeper bearing 17 flexibly is pushed into it with tube 12 front portions and engages contiguously, flexibly to engage weft yarn F for the purpose of braking, weft yarn F is passing on part 12b in its unwinding campaign of a yarn guiding ring G, combines with front surface 12 at the cylindrical surface 12a of part 12b place tube.Brake keeper bearing 17 comprises the bearing of an annular, and the radially pendulum spring such as 16 engages with this annular ledge at one end place, and the other end of described spring links to each other with brake apparatus at the smaller cross-sectional area place of the truncated cone 15 of brake apparatus.

In a well-known manner, brake keeper bearing 17 is connected to a sliding shoe 18 in order to regulate the static tension force on the weft yarn, and this sliding shoe 18 is by fixed arm 19 supportings that are parallel to the axis setting of tube 12, can carry out rectilinear motion.An inner thread piece 22 is connected on the sliding shoe 18 rigidly, and screw engages is in wherein to regulate moving of sliding shoe; Described screw rod is made of the threaded end 23a of a pivot 23, and an adjusting knob 24 is connected on this pivot 23; By described adjusting knob, just can rotate adjusting screw(rod) and produce accurately moving of sliding shoe 18, therefore and produce accurately moving of brake keeper bearing 17, act on static tension force on the tube with regulating brake 15, and therefore regulate described brake braking degree that weft yarn applied.An indicator 18a that should move by sliding shoe illustrates, and this indicator 18a moves along one division chi (not shown) in a groove 13 of fixed arm 19.

According to the present invention, a system that is used for keeping pivot 23 is arranged, it can be regulated accurately with the form of end-play, and allow to pin the best application position that is considered to and easily with brake keeper bearing 17 engagement/disengagement, and need not activation knob 24.For this purpose, pivot 23 is supported to that it is rotatable and can carry out axial translation in a fixing axle bush 25 and move, and this fixed bushing 25 is formed by an inner surface that integrally is connected the tubular body 20 of fixed arm 19.And the end of pivot 23 is contained in the centre bore (centering hole) 27 rotationally.A play adjustment screw 26 is engaged in the screw 14 that radially is formed in the tubular body 20, and be provided with the terminal 26a of a truncated cone, terminal 26a vertically is bonded on and keeps in the groove 21, and this maintenance groove 21 forms complementary shape and is arranged on the pivot 23.

By acting on the screw 26, just may regulate end-play as required and it is reduced to a few percent millimeter, greatly improved the accuracy of brake apparatus.In addition, in case found desirable braking degree, just can by fully in screw 26 turn come the pinning system, perhaps by unclamping screw, can remove brake keeper bearing 17 (Fig. 4) to carry out clean operation easily.

As conspicuous concerning those skilled in the art that, although illustrated one in the accompanying drawing in order to regulate the play adjustment screw 26 (in the industry " socket screw " or " soket head cap screw " being referred to as Alan's screw) of Alan (Allen) type that needs a suitable spanner, but as long as their end is the connection profile of identical frustoconical shape, described screw also can be substituted by the screw of other type, and selectively is connected to one and can manually activates and need not on the knob of any instrument.

In addition, in end or maintenance groove, there is a trapezoidal cross section just enough.

Find that in practice make the adjusting of brake apparatus have the more high-precision device that is used to keep brake keeper bearing by providing a kind of, the present invention has realized desired target fully.

Another advantage of the present invention is that it provides a kind of holding device, therein can be by fully screwing the application position that screw 26 comes fixedly to be considered to reliably the best.

Another advantage according to holding device of the present invention is that it does not expect the danger that throw off on ground.

Another advantage of the present invention is, it provide a kind of with low cost, make holding device simple and that can produce by traditional in the art equipment.

In fact, used material and size can be any material and sizes as required.

Mentioned technical characterictic has been followed the reference number part in any claim; comprise that those reference numbers only are the purposes for the intelligibility that improves claim, therefore such reference number is not to having any restriction by them with the protection domain of each member of example mode mark.

Claims

1. device that is used for keeping brake keeper bearing (17) at the weft yarn feed arrangement of textile machine, wherein brake keeper bearing (17) is connected to a sliding shoe (18) rigidly, this sliding shoe (18) is supported can carry out rectilinear motion by a fixed arm (19), and integrally be provided with an inner thread piece (22), be engaged with a screw rod that moves that is used for regulating sliding shoe in the inner thread piece (22), described screw rod is made of the end (23a) of a pivot (23), pivot (23) is supported to that it is rotatable and can carry out axial translation in an axle bush (25) that is rigidly connected on the fixed arm (19) and move, it is characterized in that, it comprises a play regulating part (26), this play regulating part (26) can carry out radial translation by described relatively pivot (23), and an end (26a) that can be inserted in the maintenance groove (21) that is formed on the described pivot (23) is arranged, described end (26a) and/or described maintenance groove (21) have one and are roughly trapezoidal cross section.

2. device as claimed in claim 1 is characterized in that, described end (26a) and described maintenance groove (21) all have one to be roughly trapezoidal cross section.

3. device as claimed in claim 1, it is characterized in that, described regulating part is a screw (26), it is engaged in the screw (14) that radially is formed in the part that is connected to described fixed arm (19) rigidly, and be provided with a Frusto-conical end (26a), terminal (26a) forms the described roughly part of trapezoidal cross-section that has.

4. device as claimed in claim 1 is characterized in that, described axle bush (25) is formed by an inner surface that is rigidly attached to the tubular body (20) on the described arm (19), and feature is that also described screw (14) is formed in the described axle bush (25).

5. device as claimed in claim 1 is characterized in that, it comprises the adjusting knob (24) that a coaxial line ground is connected with described pivot (23).

6. device as claimed in claim 3 is characterized in that, described play adjustment screw (26) is an allen-type.

7. each described device in the claim as described above, it is characterized in that, the described end (23b) that is used for regulating the screw rod (23a) that moves of sliding shoe be contained in rotationally one be formed on the whole transverse wall that is connected of described fixed arm in centre bore (27) in.