CN1902114B

CN1902114B - Yarn tension device

Info

Publication number: CN1902114B
Application number: CN200480039686XA
Authority: CN
Inventors: 佩尔·奥尔松
Original assignee: Iro AB
Current assignee: Iro AB
Priority date: 2003-12-31
Filing date: 2004-12-20
Publication date: 2011-08-31
Anticipated expiration: 2024-12-20
Also published as: WO2005066055A1; CN1902114A; DE502004011373D1; EP1699724B1; DE10361773A1; EP1699724A1

Abstract

The invention relates to a yarn tension device (F) having a fixed tensioning surface (1) and a moving tensioning surface (2) which can be adjusted between a tensioning position and a loosening position, and having yarn guiding elements (L1, L2, 8) arranged on the upstream and downstream of the tensioning position and defining the yarn path through the yarn tension device, wherein at least the upstream yarn guiding element (L1) is, in the tensioning position, shifted downward so that it is off-center relative to the upper side of the fixed tensioning surface (1), and the yarn tension device (F) comprises an adjusting device (SF) with which the relative position between the fixed tensioning surface (1) and at least the upstream yarn guiding element (L1, 8) can be altered in directions essentially perpendicular to the fixed tensioning surface (1), thereby leaving the tensioning position and reaching the following relative position where along the yarn path the yarn which passes the yarn tension device not only does not contact the moving tensioning surface but also contact the fixed tensioning surface.

Description

Yarn tension device

Technical field

The present invention relates to a kind of Yarn tension device.

Background technology

Disclosed as document WO 03/033385, the Yarn tension device of magnetic control is the fixing Yarn tension device of installing above the magnetic substance in the shell of Yarn tension device.At the yarn guidance unit of the upstream and downstream of anchor yarns stretching device is to have the little ring of yarn of circular annulus and define thread path by Yarn tension device.The stretching surface of motion is an elastic sheet, and this elastic sheet is fixed on the valve, and this valve position reference line parallel with thread path is vertical.This valve of stretch position at Yarn tension device cuts out.Stretching action is to be controlled with respect to fixing stretching surface by the magnetic load of elastic sheet.In the position (release position) that valve is opened, take off from fixing stretching surface on the motion surface that stretches.In use occasion, there is not stretching action that the yarn of advancing by Yarn tension device is suitable for, for example, for difference or sticking yarn qualities.Under these circumstances, valve stays open state.Considering by the yarn travel path of Yarn tension device that the special selection relative position of normal stretched operation by the yarn guidance unit is determined to be makes the yarn that is stretched not make motion stretching plane produce vibration when the weak stretching action, although be the valve of opening, the yarn that does not have to stretch can rub on fixing stretching surface in the release position.The relative position of a single pre-prepd yarn guidance unit does not all provide optimum trading off to thread material that is not stretched and the thread material that slightly is stretched.Therefore, such consideration is arranged, in a lot of occasions, yarn enters the little ring of the yarn that is positioned at the upstream with the form of periodic motion, and the little ring of yarn is energized by the yarn generator that is provided with at this place, has so just excited the vibration of yarn in Yarn tension device.

Summary of the invention

The objective of the invention is existing Yarn tension device is improved, make to provide optimum yarn traveling process condition the different thread material that stretches with not being stretched.

Predetermined goal of the invention is resolved in following Yarn tension device.A kind of Yarn tension device, be used to the machine that spins, have a fixing stretching surface and the stretching surface of a motion, the stretching surface of this motion can be adjusted between stretch position and release position, mention from described fixing stretching surface on described release position relying on pressure to place on the stretch zones on the described stretch position on fixing stretching surface on the stretching surface of this motion; Also has the yarn guidance unit that is positioned at described stretch zones upstream and downstream, described yarn guidance unit has been determined the yarn travel path by Yarn tension device, wherein, at least the yarn guidance unit that is positioned at described stretch position upstream is moved down prejudicially with respect to described fixing stretching surface, and this Yarn tension device is provided with a position regulator, rely on this position regulator, described fixing stretching surface and on the relative position between the yarn guidance unit of upstream allows substantially direction perpendicular to described fixing stretching surface, changing, thereby leave stretch position and arrive following relative position, the yarn that passes the yarn guidance unit of described upstream and downstream and pass Yarn tension device along described yarn travel path at this relative position neither contacts described motion in described Yarn tension device (F) stretching surface does not contact described fixing stretching surface yet.

Thread material for the needs stretching, only need the slight thread material that stretches when including, favourable way is, at least the yarn guidance unit of installing in the upstream is down eccentric moving with respect to fixing the stretching above the surface, whereby, the yarn that enters cleaning and being pulled along fixing stretching surface reposefully, self enters into the yarn guidance unit that is positioned at the upstream by means of periodic motion.Like this, provided the yarn traveling process condition of the optimum when stretching.Downwards to install for the thread material that should not be stretched may be unsuitable to accentric, because be drawn to fixing stretching surface passively and rubbed at the yarn of the tractive force that is lower than technological condition.According to position alignment direction of the present invention, can make fixing stretching surface and be that relative position between the yarn guidance unit of upstream is changed at least, make for the thread material that is not stretched, optimum yarn traveling process condition can be provided in the Yarn tension device release position.Yarn tension device only needs to change and open and need not dismantle to the not influence of yarn traveling process.

In many use occasions, such Yarn tension device, at least be that the yarn guidance unit that is positioned at the upstream must have and relates to pre-determining and unmodifiable relative position of a device, yarn enters into Yarn tension device by this device, fixing stretching surface on the top direction perpendicular to it, is to be to be fit to perpendicular to adjustable words on the direction of the yarn guidance unit that is positioned at the upstream substantially at least substantially.Relate to the optimum stretching action that does not have the fluctuation of yarn pulling force, also relate to very little stretching action, perhaps, the thread material that is opened at the thread material that does not need to stretch and Yarn tension device, by the adjustment of fixing stretching surface with respect to the yarn guidance unit, the relative position of the optimum between yarn guidance unit when having produced the thread material of each processing and the fixing stretching surface.Under the 1st kind of situation, the yarn guidance unit in the face of fixing stretching surface top a little toward below, promptly, depart from from the stretching surface of motion, be adjusted, whereby, yarn self relies on the periodic motion of working in the upstream accurately clearly to be pulled along fixing stretching surface according to the vibration tendency.The 2nd kind of situation, the top of fixing stretching surface makes yarn from when it leads to the yarn guidance unit with a kind of periodic motion at least in the face of the yarn unit that is positioned at the upstream is adjusted to following, gets around on fixing stretching surface, is not stretched.

In some use occasion, need to change at least to be arranged in of one the configuration of the yarn guidance unit of upstream with respect to the yarn distribution device, under these circumstances, favourable way is at least substantially perpendicular to adjusting the yarn guidance unit that is positioned at the upstream on the direction on fixing stretching surface.Fixing stretching surface does not need to adjust.

At the yarn guidance unit is to have under the situation of the little ring of yarn of circular annulus, favourable way is, to make perpendicular to the visual distance between the vertex at the circumference of fixing stretching surface and annulus of upper surface be the about 5 to 35% of circle diameter in the face of fixing stretching surface is selected to following adjustment, preferably 20%.To the thread material that does not need to stretch, relative position be adjusted to up to the distance between the vertex of fixing stretching surface and this circumference be circle diameter at least half, up to equaling the whole circumference diameter, preferably greater than the diameter of whole circumference.

When the fixedly stretching surface of the mobile traction of the shell of Yarn tension device is adjusted textural be simple.Mobile traction can be substantially perpendicular to carrying out above the fixing stretching surface.The fixing stretching surface that provides is in advance had at least 2 predetermined position locations, and they define optimum relative position.Sometimes need the position location more than 2.

Fixing stretching surface in simply constructed embodiment between the position location can manual setting, for example, can occupy position location separately up to fixing stretching surface by pushing with hand on one or another registration device.When fixing stretching surface was installed on the magnetic bodies, magnetic bodies was adjusted with fixing stretching surface.

In some cases, fixing stretching surface adjusted can use auxiliary device, the magnetic bodies that has or do not provide in advance, operation can be simplified.Auxiliary device can be remote manipulation in some cases, for example, can use air cylinder or electric motor.

In another embodiment, in this embodiment, the position of the yarn guidance unit that is positioned at the upstream that relates to the device of above-mentioned configuration is not to change, and this yarn guidance unit is relatively with respect to being adjusted above the fixing stretching surface.Described adjustment can realize by the sidepiece of shell that adjustment comprises the Yarn tension device of yarn guidance unit, or only is adjusted at the yarn guidance unit in the shell.Under these circumstances, the yarn guidance unit is that the words with little ring of yarn of circular annulus are favourable.By the position location that limits backward or move forward, perhaps rely on an eccentric wheel green phase to be enhanced or reduce in little ring of yarn or the mobile traction of shell-side outside for the rotation on fixing stretching surface.Two yarn guidance units together or respectively independent adjustment are favourable.

The position location is tight in form and is flexibly to increase load.Allow like this to operate easily, consider and if adjust, must unclamp described cell arrangement for each position location provides lax cell arrangement in advance earlier from the angle of safety.

Description of drawings

Embodiment and goal of the invention can obtain understanding in conjunction with the accompanying drawings.

Fig. 1 is the lateral plan of signal that is in the Yarn tension device of stretch position.

Fig. 2 is the lateral plan in the signal of the Yarn tension device of the release position that does not stretch.

Fig. 3 is the detailed scheme drawing that is similar to the half-twist in the yarn direct of travel of Fig. 1.

Fig. 4 is the detailed scheme drawing that is similar to the half-twist in the yarn service direction of Fig. 2.

Fig. 5 is perpendicular to the yarn service direction with at the partial cross section figure of the specific embodiment of the Yarn tension device of release position.

Fig. 6 is the cross sectional view at Fig. 5 of sectional plane VI-VI.

Fig. 7 be in stretch position Yarn tension device perpendicular to the schematic cross-section in the sectional plane of yarn service direction.

Fig. 8 is the cross sectional view at Fig. 7 of sectional plane VIII-VIII.

Fig. 9 is the section drawing in the part of the sectional plane of sectional plane IX-IX of the lateral plan of for example Yarn tension device of Fig. 7 and Figure 10.

Figure 10 is the birds-eye view of the partial cross section in sectional plane X-X of Fig. 9.

The specific embodiment

The Yarn tension device F that only schematically represents in lateral plan in Fig. 1 and Fig. 2 has shown the fixing 1 and magnetic bodies 3 in stretching surface, and this magnetic bodies 3 is adjustable in perpendicular to the mobile traction above the fixing stretching surface 1.The stretching surface 2 of a motion of working with fixing stretching surface 1 is provided, this stretching surface 2 for example has near the valve (not showing) the position reference line 29 of a stretch position of representing in Fig. 1, and can reach the release position of representing in Fig. 2 of opening.On magnetic bodies 3, produce also modulated at stretch position at the stretching action that stretches between the surface 1 and 2.The situation that might take place is, motion stretch surface 2 additionally or even only by the yarn that do not show or by self elastic compression on fixing stretching surface 1.Upstream and downstream on fixing stretching surface 1 provides yarn guidance unit L1 and L2, and yarn guidance unit L1 and L2 define the yarn operating path by Yarn tension device F.

Yarn guidance unit L1 and L2 for example are the little rings 8 of yarn with circular annulus 9.Yarn guidance unit L1, L2 are in the certain relative position in the face of top (plane) on fixing stretching surface 1 of the shell sidepiece 6,7 of yarn draw unit F.

In the stretch position of representing in Fig. 1, move to following a little in the face of fixing stretching surface 1 at the middle part 9 of the circle of the little ring of representing with Y 8 of yarn.According to Fig. 3, center of circle Y above stretching surface 1 that following installation is configured to fix and between the vertex 11 of annulus 9 is 5 to 35% of circle diameter d apart from a.Can realize following effect by such configuration, when yarn enters into the little ring of the yarn that is positioned at the upstream 8 with periodic motion when, (dotting in Fig. 1), yarn can be pulled along fixing stretching surface 1 exactly and the vibration of periodic motion is further decayed.The little ring 8 of the yarn of downstream one side can equally be arranged the position by the little ring 8 of the yarn of image position in the upstream.This is not that decision is essential.Be positioned at and rely on center of circle Y on fixing stretching surface 1, to aim under the situation that the little ring 8 of yarn in downstream has or be positioned at above the fixing stretching surface 1.

Moving guide rail is that magnetic bodies 3 and fixing stretching surface 1 define the 1st and the 2nd position location at least.Stretching surface 1 fixing between position location R1 and R2 for example can be adjusted by manual pushing up or down, perhaps, also can adjust by auxiliary device 4 and a device for carrying out said 5.The above-mentioned relative position between yarn guidance unit L1, L2 and fixing stretching surface 1 that belongs to stretch position is arranged among the position location R1 above representing in as Fig. 1.

This relative position changes in the release position of the Yarn tension device F that represents in as Fig. 2.And the center of circle in the face of the little ring 8 of the top yarn that is positioned at the upstream (under situation about having) on fixing stretching surface 1 with respect to Fig. 1 and Fig. 3 moves down at least.According to Fig. 4, between the vertex 11 of the circumference of the top and annulus 9 on fixing stretching surface 1 is about 80% of circle diameter d apart from a '.As Fig. 4 is represented, the lower right as 10 schematically the expression, it between the vertex 11 of circumference of annulus 9 and fixing stretching surface 1 top is the over half of circle diameter d apart from a ' that the size of adjustment region can make, even can be greater than circle diameter d.

In the additional embodiments of a Yarn tension device F who does not show, yarn guidance unit L1, L2 are the little ring 8 of yarn that is positioned at the upstream at least, are adjustable at separately shell sidepiece 6 or 7 with respect to fixing stretching surface 1.For this purpose, the little ring 8 of adjustable yarn for example is installed in the moving guide rail in shell sidepiece 6 or 7, and the shell sidepiece defines at least 2 the position location R 1, the R2 that carry out the separation of height alignment each other.Selection in addition is the little ring of yarn or is made into and self has the accentric annulus, perhaps comprises an eccentric wheel, makes the height and position that relies on reversing in the shell-side outside can change between center of circle Y and the fixing surface 1 that stretches top concern.In some cases, when above-mentioned relative position must change, (do not show), even whole casing sidepiece 6 or 7 is adjusted with the little ring 8 of yarn.

Fig. 5 has shown the various views and the cross sectional view of the specific embodiment of Yarn tension device F in Figure 10, and this Yarn tension device is the Yarn tension device of the TEC type of magnetic control.

This Yarn tension device has shown setting device SF, the stretching surface between at least 2 position location R1 and R2 of the position of the magnetic bodies 3 that is used to adjust configuration, and these rely on Fig. 1 to Fig. 4 to explain.The stretching surface of the motion that does not show in the drawings is installed on the valve 18, the direction of the arrow that this valve 18 can be represented at Fig. 5 from the stretch position that is expressed with respect to the datum line 29 of the shell sidepiece of Yarn tension device is opened, and makes Yarn tension device be in the release position.

Formed near the

recess

20,19 of 2 approaching V-arrangements that the yarn service direction, extend at housing parts 12.Characteristics are to be connected with the header field 16 that for example is bending here by the positioning unit that takes the shape of the letter U 13 that two legs form, and this header field 16 is connected with magnetic bodies 3 and makes flexibly or place flexibly.Positioning unit 13 can be the artificial pointed foundry goods that becomes one with header field 16.For further safety, two position location R1, R2 can be the pressure springs 14 at locating dowel pin 15.Provide closing appliance in farther place, this closing appliance divides 25 to surround handle 17 with latching projection.Handle 17 rotates around axle bolt 22, this bolt 22 and flange 21 that is connected with magnetic bodies 3 are connected as a single entity and between two legs of positioning unit 13, and provide at the spring arm 26 as handle 17 application of loads of the locked position of coupler of the expression among Figure 10.As long as handle 17 in Figure 10 no longer reverses in the direction of the clock in latching projection 25 modes that are moved of dividing of the space segment that causes the centre between the two legs of positioning unit 13, close trivial outshot 25 at locked position of coupler and for example be stuck on the leg of positioning unit 13, making it face toward spring 14 can not break away from from the

recess

19 or 20 of location.

If continue to reverse by anticlockwise direction at handle 17 as the represented locked position of coupler among Figure 10, make the latch projection part 25 of right leg of the latch portion 13 among Figure 10 obtain freedom, then by for example pressure on magnetic shell 3, and, on the represented direction of Figure 10, perhaps manual or up or down by auxiliary device, adjust separately position location R1, R2.In some cases, handle is released when remote control, then spring arm 26 on the locked position of coupler represented as Figure 10 by being pressed on the latch projection part 25.In some cases, this C.C.W. swing that moves through handle 17 is supported.

Little shell part 23 of handle 17 usefulness is rotatably installed on axle bolt 22, and guarantees to withstand lifting by distance capsule 24.

Stretching surface 1 fixing in Fig. 5 and Fig. 6 is defined in position location R2.Between the vertex 11 of the circular annulus 9 of the yarn jut that yarn travel path X and yarn guidance unit L1 or L1 and L2 limit for example is 5.5mm apart from a '.In this case, valve 18 can remain on the position that is not opened, and the yarn of advancing along yarn travel path X can neither contact with the stretching surface of moving, and does not also contact with the stretching surface of fixing 1.Consider from the aspect of safety, can allow the valve 18 among Fig. 5 open in the direction of the clock.The handle 17 at locked position of coupler in Figure 10 has stoped the self-excitation campaign from the magnetic bodies 3 of selecteed position location R2.

In the stretch position as Fig. 7 and 8 represented Yarn tension device F, magnetic bodies 3 is fixed on another position location R1 and relies on latching projection to divide 25 to be stabilized the position by handle 17 with fixing stretching surface 1.At least equal to be positioned at the yarn jut and the yarn guidance unit L1 of upstream apart from a between fixing stretching surface 1 and the annulus 9, promptly about 0.5mm, that is, and between yarn travel path X and the stretching surface fixed apart from the size of a corresponding to 0.5mm.

If on the stretch position in Fig. 7 and 8, words that enter with periodic motion by the yarn that produces at the yarn generator of the former configuration that is positioned at the upstream for example at yarn jut L1, this yarn generator can make the vibration of yarn generation perpendicular to fixing stretching surface 1, this vibration by yarn and fixing stretching surface contact and the effect of yarn jut is attenuated, make yarn can pass through Yarn tension device reposefully.In the position of unclamping, according to Fig. 5 and Fig. 6, should not be in the yarn that is stretched in the Yarn tension device originally, in the vibration that produces in some cases perpendicular to the surface 1 that stretches, stretching surface 1 not surperficial with the stretching of motion or that fix contacts and is stretched.

Intrinsic position at Yarn tension device can provide mark, and which among registration device R1 or the R2 indication of vision ground select.In some cases, position location R1 or R2 more than two are provided, but the adjustment region of unqualified position location of the adjustment that is regardless of grade of the relative position that the yarn guidance unit that relates to fixing stretching surface can be provided perhaps is provided.

Claims

1. a Yarn tension device (F), be used to the machine that spins, stretching surface (2) with a fixing stretching surface (1) and a motion, the stretching surface (2) of this motion can be adjusted between stretch position and release position, the stretching surface (2) of this motion upward relies on pressure to place on the stretch zones on fixing stretching surface (1) on described stretch position, mentions from described fixing stretching surface (1) by opening Yarn tension device (F) on described release position; Also has the yarn guidance unit (L1 that is positioned at upstream and downstream with respect to described stretch zones, L2,8), described yarn guidance unit has been determined the yarn travel path (X) by Yarn tension device, it is characterized in that: the yarn guidance unit (L1) that is positioned at the upstream at least is the little ring of yarn (8) with annulus (9), at described stretch position, described relatively fixing the top of stretching surface (1) in the center of circle (y) of this annulus (9) is provided with downwards prejudicially, wherein, at described stretch position, at least the yarn guidance unit (L1) that is positioned at the upstream is moved down prejudicially with respect to described fixing stretching surface (1), and this Yarn tension device (F) is provided with a position regulator (SF), rely on this position regulator, described fixing stretching surface (1) and be positioned at the yarn guidance unit (L1 of upstream, 8) relative position between allows substantially to be changed on the top direction perpendicular to described fixing stretching surface (1) the following relative position between the position of the described yarn guidance unit (L1) that is positioned at the upstream at least and the stretching surface (1) fixed, at this relative position, distance between on the vertex (11) of the circumference of the annulus (9) of the yarn guidance unit (L1) that is positioned at the upstream and fixing stretching surface (1) (a ') is greater than half of the diameter (d) of described circumference, thereby place, the release position of opening at described Yarn tension device (F), advance along described yarn travel path (X) and to pass the described yarn guidance unit (L1 that is positioned at upstream and downstream, L2,8) yarn neither contacts described motion in described Yarn tension device (F) stretching surface (2) does not contact described fixing stretching surface (1) yet.

2. Yarn tension device according to claim 1 is characterized in that: the above-mentioned at least yarn guidance unit that is positioned at the upstream (L1,8) is adjustable on perpendicular to the direction above the described fixing stretching surface (1).

3. Yarn tension device according to claim 1 is characterized in that: at described stretch position place, the distance between the vertex (11) of the circumference of the top and described annulus (9) on described fixing stretching surface (1) is 5 to 35% of a circle diameter (d).

4. Yarn tension device according to claim 1 is characterized in that: at place, described release position, the distance between the vertex (11) of the circumference of the top and described annulus (9) on described fixing stretching surface (1) is greater than the diameter (d) of whole circumference.

5. Yarn tension device according to claim 1 is characterized in that: the stretching surface (1) of said fixing is installed on the moving guide rail, and this moving guide rail is top vertical with described fixing stretching surface; Provide be used for described fixing stretching surface (1) two or more predetermined position location (R1, R2); And the magnetic bodies (3) of the stretching surface (1) of said fixing on being installed in fixing stretching surface (1), (R1 can manual setting between R2) in described position location.

6. Yarn tension device according to claim 1, it is characterized in that: the above-mentioned at least yarn guidance unit (L1 that is positioned at the upstream, 8) be installed on the shell sidepiece (6,7) of Yarn tension device (F), wherein, have yarn guidance unit (L1,8) shell sidepiece (6,7), perhaps the shell sidepiece (6,7) the yarn guidance unit (L1) on is adjustable on perpendicular to the direction above the stretching surface (1) of said fixing.