Yarn splicing device for air-flow engagement yarn and thread head
Technical field
The present invention relates to the yarn splicing device for the air-flow engagement especially yarn and thread head of the upper yarn of elastomer yarn and lower yarn,
With connecing connecing yarn prism, opening for pneumatically preparing the holding of yarn and thread head to be joined for yarn channel with acceptable compressed air
Loose tubule, multiple thread nipper assemblies for manipulating or being truncated yarn and thread head and multiple wire-cutting devices and with connect yarn prism
Connect that yarn channel is spaced and the holding mechanism of drift for the yarn and thread head after fixed truncation.
Background technique
Yarn splicing device for air-flow engagement yarn and thread head is especially relatively already known with automatic cross winding machine, and
And it is clearly stated in many patent documents such as DE4005752A1 or DE4420979A1.
Using such yarn splicing device, two occurred after for example interrupting winding because of broken yarn or the cutting of controllable clearing
A yarn and thread head is engaged by air-flow, to the approximate yarn junction as yarn occur.That is connecing yarn dress known
In setting, the upper yarn yarn and thread head that the surface of cross winding bobbin is generally fallen on after broken yarn is accepted by so-called suction nozzle and quilt
Merging yarn splicing device connects the connecing in yarn channel of yarn prism.
Almost simultaneously, by so-called clamp yarn cop, the yarn and thread head of lower yarn is opened from the yarn being substantially set to above unwinding cheese
It is removed in tight device or from the unwinding cheese for being located at unwinding position and is also charged into and connect the connecing in yarn channel of yarn prism,
Here, the yarn and thread head of upper yarn and lower yarn is then by air-flow scrollwork.
But in order to which the connection of such yarn has the appearance almost as yarn and approximate with yarn strength, two
A yarn and thread head first must be truncated accurately and be ready for connecing yarn process.
Known yarn splicing device has corresponding multiple yarn clamping mechanisms, yarn cutting mechanism and so-called holding shredding thus
Tubule.That is, two yarn and thread heads are threaded by aforementioned controls into being located in one of the folder when connecing yarn channel respectively at it
Between the clamping jaw of yarn mechanism and the cutting tool of one of them yarn cutting mechanism.
When the yarn and thread head of the yarn and thread head of upper yarn and lower yarn is fixed in affiliated yarn clamping mechanism, yarn is cut by yarn
Breaking mechanism is truncated.
Then, the yarn and thread head being truncated is inhaled into the holding shredding tubule being adjacently positioned at that time and is pneumatically prepared there
It is good.
That is, yarn and thread head gets rid of its yarn twirl as far as possible first, staple fiber is also taken out herein.
Then, ready yarn and thread head be drawn by so-called ring pull-out element connect yarn prism connect yarn channel, from
And they are substantially located side by side in parallel in identical height and connect in yarn channel, but have opposite orientation simultaneously.
The head for connecing the pulse of compressed air in yarn channel and being then used for two yarn and thread heads is admitted to by corresponding mouth blown
As a result the scrollwork of first substantially parallel fiber is exactly the almost yarn connection as yarn occur, and then newly continuous occur
Yarn.
The method and corresponding yarn splicing device are in practice when simple cotton yarn engages or by cotton yarn and staple fibre
It is proved completely when the mixture engagement of composition.
But when that should engage so-called elastomer yarn, situation shows to be more difficult, and elastomer yarn generally has by such as cotton
The high resiliency heart yarn that fiber surrounds.
Such elastomer yarn makes every effort to the strong contraction after yarn is cut off because of high resiliency heart yarn, i.e., strong to tangle.
When an aforementioned yarn splicing device should be engaged such elastomer yarn wherein, following problem is generally occurred within,
Yarn and thread head because its very easy entanglement and or can not be inhaled into and keep shredding tubule and accordingly being ready to, or connect yarn and fill at this
The overlapping for connecing the yarn and thread head in yarn channel for connecing yarn prism set is inadequate.
Two kinds of results generally result in or can not be formed yarn engagement, or are formed by yarn connection and do not correspond to be wanted
The qualitative character asked.
In order to positive engagement elastomer yarn, thus proposed connect yarn prism connect in yarn channel region or
Locking mechanism is set in the slightly spaced region for keeping shredding tubule, it is solid after with the truncation of yarn cutting mechanism
Determine yarn and thread head.That is, preventing the free end for the yarn and thread head being truncated may mistake in principle it is known that following fixed mechanism is arranged
Degree tangles.
Such as it has been proposed that connect connecing yarn channel over the whole length there is thread-like structure and pass through this for yarn prism
Kind mode resists the easy entanglement of elastomer yarn.
But this yarn prism that connects in the whole length that it connects yarn channel with thread-like structure has following lack
Point, on the one hand they are manufactured relatively cumbersome and thus relative cost is high, is on the other hand formed by and connects loose thread and can not always allow people
Convince.
Furthermore a kind of yarn splicing device is described in EP1118570A2, is had in the height for keeping shredding tubule in saw
The additional yarn locking mechanism of dentation sheet form.
The plate for fixing one of yarn and thread head respectively is disposed substantially at real yarn clamping mechanism and corresponding holding
On halfway between shredding tubule.
That is occur after yarn and thread head is truncated with yarn cutting mechanism, the free length of yarn of easy entanglement pass through it is attached
The yarn locking piece added is substantially divided half-and-half.
Using the yarn splicing device constituted in this way, loose thread is successfully connect although can slightly increase in elastomer yarn
Quantity, but principle matter can not be eliminated.
Furthermore a kind of yarn splicing device is disclosed by DE10060623A1, wherein the problem of elastomer yarn tangles is also such
It eliminates, i.e., each yarn and thread head uses two yarn clamping mechanisms.
It can Mechanical course that is, installing two in the two sides for connecing yarn channel for connecing yarn prism in known yarn splicing device
Yarn clamping mechanism, not only also fixed yarn the end of a thread after connecing yarn channel before connecing yarn channel.
A kind of yarn splicing device is described in DE10330988A1, wherein connect the logical of yarn channel what this connect yarn prism
Relatively narrow axial groove is equipped in road base surface area.
In the axial groove, being placed into the yarn and thread head connect in yarn prism should be fixed and the especially elastomer yarn
Yarn and thread head be prevented from excessive entanglement.
Finally, disclosing a kind of yarn splicing device by DE10124832A1, wherein be equipped with and be used in keeping shredding tubule region
The locking mechanism for the yarn and thread head being truncated.
The locking mechanism is constituted herein with the mesh form for being subjected to negative pressure, and the yarn and thread head being truncated pneumatically is fixed to
Its surface and simultaneously for dividing half-and-half the length of the yarn and thread head of easy entanglement.
Summary of the invention
In view of the aforementioned prior art, the present invention is based on following tasks, that is, change is known to engage yarn and thread head for air-flow
Yarn splicing device, to also reliably guarantee the engagement of problematic yarn especially elastomer yarn using such device.According to
The manufacturing cost of yarn splicing device of the invention should be kept in the reasonable scope herein.
According to the present invention, which is completed by a kind of yarn splicing device, wherein holding mechanism is as Yarn braking part structure
At being respectively disposed on the end side for connecing yarn channel for connecing yarn prism and be made of attachment plate, attachment plate has with to upper yarn
Play the role of the groove of the structure of retardation motion with the yarn and thread head of lower yarn.
The design structure of Yarn braking part according to the present invention especially has the following advantages herein, the yarn and thread head of upper yarn and lower yarn
It is fixed respectively in the two sides for connecing yarn channel for connecing yarn prism and thus reliably prevents yarn and thread head from using yarn cutting mechanism at it
It at once strong can tangle after truncation.
Yarn and thread head is fixed in the groove of attachment plate by the structure, although to avoid after truncation as far as possible
Yarn and thread head tangle, but yarn and thread head is still successfully inhaled into and keeps shredding tubule and to be ready.
Do not interfere yarn and thread head then to connect connecing for yarn prism in place by regulation in yarn channel yet.That is, yarn and thread head is by institute
Ring pull-out element of meaning etc. with can scheduled overlapping degree be smoothly located in and connect in yarn channel.
Because yarn and thread head only in the end side region for connecing yarn channel and is only fixed in the region of relatively short yarn section,
Therefore the scrollwork of the fiber of ready yarn and thread head during connecing yarn is not almost interfered with also.
That is using the yarn splicing device constituted according to the present invention can be made such as yarn under working connection, it is shorter but
It is sufficiently solid and also there is appearance almost as yarn.
Even if the according to the present invention of Yarn braking part is designed and arranged therefore allows to realize in a comparatively simple manner
Being reliably completed for yarn is connect according to regulation under problematic yarn situation.
Provide that the structure of the groove of the attachment plate is constituted in shape of threads in Advantageous embodiments.
Such thread-like structure has the following advantages, on the one hand it plays the work of retardation motion to the yarn and thread head being placed in
With not preventing to connect yarn process but then.That is, the fiber of yarn and thread head is always by regulation by scrollwork when connecing yarn air and being blown into.
It is provided in other Advantageous embodiments, in attachment plate installation condition, the groove formation connects yarn prism
Connect the extension of yarn channel.
Design in this way manufactures relative brevity although not only having accomplished to minimize the width for connecing yarn prism,
But guarantee to connect according to the yarn of regulation, also guarantee occur the good formation for connecing yarn air stream in yarn channel connecing,
The abundant scrollwork of fiber for ready yarn and thread head.
The attachment plate, which is preferably removably placed in, to be connect on yarn prism and is installed respectively with bolt.
Such design has the following advantages, in case of need, for example (,) it is attached when being replaced in the replacement of yarn batch
When loading board appears to have meaning, the attachment plate that attachment plate smoothly can be replaced or be damaged at any time can quickly successfully more
Newly.
It can provide in another Advantageous embodiments of optional use, be additionally provided with other than Yarn braking part of the invention
Other Yarn braking mechanisms, act on the drift for the yarn and thread head being truncated.
Such additional yarn arrestment mechanism for example can be such as the locking mechanism as disclosed in DE10124832A1, with can
The mesh form for receiving negative pressure is constituted and is placed in and keeps in shredding tubule region.But as additional yarn arrestment mechanism
Following mechanism can be used, is arranged in and is kept in shredding tubule region and be respectively provided with coarse contact surface, the yarn being truncated
The end of a thread is fixed on the contact surface.
About the general structure and function of this yarn splicing device, it is also contemplated that various difference modifications.
Such as it is known that so construct yarn splicing device, can be abandoned during connecing yarn process using closing connect yarn prism
Connect the cover piece of yarn channel.
But it is provided in Advantageous embodiments, yarn prism is connect using following, connects yarn channel during connecing yarn process
It can be closed by cover piece.
It prevents yarn and thread head that may be connect yarn air during connecing yarn and blow out upwards in a simple manner by this cover piece to connect
Yarn channel, this, which always will lead to, connects yarn flaw.
Detailed description of the invention
Hereinafter, describing other details of the invention in conjunction with embodiment shown in the drawings, in which:
Fig. 1 is shown ... in a side view the station of the automatic cross winding machine with yarn splicing device,
Fig. 2 has what is constituted according to the present invention to connect yarn to overlook to illustrate during being placed in yarn and thread head to be connected
The yarn splicing device of prism,
Fig. 3 illustrates the first embodiment party with the yarn splicing device for connecing yarn prism constituted according to the present invention to overlook
Formula, and
Fig. 4 illustrates the second embodiment with the yarn splicing device for connecing yarn prism constituted according to the present invention to overlook.
Reference signs list
1 automatic cross winding machine
2 winding positions
3 bobbin bobbin conveying systems
4 coils supply section
5 canned paragraphs
6 lateral transfer sections
7 bobbin loopback sections
8 transfer dish
9 coils
10 yarn splicing device
11 thread grips and cutting mechanism (on)
12 suction nozzles
13 pivot axis
14 serrated rollers
15 cross winding bobbins
16 pivot centers
17 thread grips and cutting mechanism (under)
18 attachment plates
19 connect yarn prism
20 connect yarn channel
21 cross winding bobbin conveying mechanisms
22 mouth blown
23 cover pieces
24 winding devices
25 clamp yarn cops
26 pivot centers
27 grooves
28 bobbin cradles
29 station computers
30 pivot axis
Yarn on 31
32 lower yarns
33 air distribution units
34 keep shredding tubule
35 Yarn braking parts
36 Yarn braking mechanisms
37 air intake passages
38 bolts
39 are threadedly coupled
40 pivot driver mechanisms
Specific embodiment
Fig. 1 shows the weaving loom of manufacture cross winding bobbin with schematic side view, is so-called automatic in the present embodiment
Cross winding machine 1.
As is known, this automatic cross winding machine 1 has many identical works between its (not shown) end racks
Position and herein be winding position 2.
On the winding position 2, as it is known and thus be not described in detail, on ring spinner made of there is relatively small amount
The coil 9 of thread material by rewinding at the cross winding bobbin 15 of large package, (not showing by automatic work after formation
Unit is serviced out), is preferably transferred to by so-called cross winding bobbin more changing device the intersected coiled bobbin along machine length
Sub- conveying device 21 is simultaneously transported to bobbin loading depot etc. set on machine end side.
Such automatic cross winding machine 1 is generally also provided with the logistics device in 3 form of bobbin bobbin conveying system, at this
In bobbin bobbin conveying system, the bare bobbin of coil 9 or unwinding recycles on transfer dish 8.
Fig. 1 illustrate only this bobbin bobbin conveying system 3 coil supply section 4, can reverse driven canned paragraphs 5, logical
To the lateral transfer section 6 and bobbin loopback section 7 of winding position 2.
As is known, unwinding position of the provided coil 9 in 6 region of lateral transfer section being located on winding position 2
AS is set by rewinding into large package cross winding bobbin 15.
Individually winding position thus also as is known and thus have a variety of different guarantee stations with being only shown by rule
Surely the device run.
These devices are, for example, suction nozzle 12, clamp yarn cop 25 and Yarn Connecting apparatus 10.
Suction nozzle 12 and clamp yarn cop 25 are logical by aspirating the air-breathing that air interface tube is connected to along machine length respectively herein
Road 37.
In addition, suction nozzle 12 can be around pivot center 16 and clamp yarn cop 25 can be installed around 26 restricted rotational movement of pivot center.
The device that other attached drawings of this winding position 2 are not shown specifically is, for example, yarn tensioner, yarn clearer, waxing dress
It sets, yarn cutting mechanism, yarn tension sensor and lower yarn sensor.
Yarn Connecting apparatus is constituted in the form of air-flow yarn splicing device 10 herein and the conventional yarns about winding position 2 move towards to omit
Micro- retraction arrangement.
In addition, being mounted with a variety of different yarn manipulating apparatus attached to same as illustrated in fig. 2 in 10 region of yarn splicing device.
For example equipped with thread grip and cutting mechanism 11 above yarn splicing device 10, and it is equipped with below yarn splicing device 10
Thread grip and cutting mechanism 17.
As shown, carrying out the cross winding on the winding device 24 for being set to machine top side on such winding position 2
The winding of bobbin 15.
Such winding device 24 especially has bobbin cradle 28, and bobbin cradle can be installed and have with moving around pivot axis 13
For rotatably keeping the mechanism of cross winding bobbin bobbin.
In winding process, it is freely rotatably mounted at the cross winding bobbin 15 in bobbin cradle 28 with its surface for example
Recline serrated roller 14 and the drive that rubbed by it.In addition, serrated roller 14 is simultaneously for making to fall on cross winding bobbin 15
Yarn traversing when doffing.
Instead of aforementioned 14 ground of serrated roller, it is clear that can be driven on winding device 24 or using other types of bobbin
Motivation structure or yarn transversing mechanism.
The driving of cross winding bobbin 15 can also for example be carried out by so-called bobbin driven roller, and the traversing example of yarn
Such as by so-called guide fingering row.
In addition, this automatic cross winding machine 1 is generally configured with (not shown) central control unit, not by machine bus
Only it is connected with the individual station computer 29 of individual winding position 2, is also connected with the control device of service unit.
Fig. 2 with top view schematically show be placed in upper yarn 31 and lower yarn 32 wait which there is basis during connecting yarn and thread head
The yarn splicing device 10 for connecing yarn prism 19 that the present invention is constituted.
As shown, clamp yarn cop 25 connects yarn channel 20, set on connecing for what the merging of the yarn and thread head of lower yarn 32 connect yarn prism 19
The yarn clamping mechanism 17 ' and the yarn cutting mechanism 11 " above yarn splicing device 10 of 10 lower section of yarn feeding device.
Suction nozzle 12, which correspondingly penetrates the yarn and thread head of upper yarn 31, connects connecing yarn channel 20, being set to yarn splicing device for yarn prism 19
The yarn clamping mechanism 11 ' and the yarn cutting mechanism 17 " below yarn splicing device 10 of 10 tops.
Yarn splicing device 10 itself is substantially by air distribution unit 33 (so-called holding shredding tubule 34 is added thereto), band
There is the cover piece for connecing yarn prism 19 and can install around 30 restricted rotational movement of pivot axis for connecing yarn channel 20 of acceptable air-flow
23。
It is fixed on air distribution unit 33 here, connecing yarn prism 19 preferably by being threadedly coupled 39.
In the installation condition for connecing yarn prism 19, it is passed through in the mouth blown 22 for connecing yarn channel 20 and air distribution unit 33
(not shown) pressure hole be connected, have and can be connected to by the respective line of solenoid valve that regulation controls for example, by accessing
Compressed air source.
Upper yarn and lower yarn 31,32 are used for as shown, being furthermore used as in the two sides for connecing yarn channel 20 for connecing yarn prism 19
The holding mechanism of yarn and thread head be respectively equipped with a Yarn braking part 35.Here, Yarn braking part 35 is preferably with 18 shape of attachment plate
Formula is constituted, and is respectively provided with groove 27.
The groove 27 for forming the extension for connecing yarn channel 20 for connecing yarn prism 19 narrow for its width B is arranged
There is thread-like structure, which plays the role of the yarn and thread head 31,32 of merging to inhibit movement.
As previously mentioned, yarn splicing device 10 is also equipped with cover piece 23, cover piece can be installed and lead to around 30 restricted rotational movement of pivot axis
Crossing and (only schematically show) pivot driver mechanism 40 can be controlled by regulation.
Variant yarn splicing device 10 is shown in figs. 3 and 4, wherein can be used with design structure according to the present invention
Connect yarn prism 19.
In addition to Yarn braking part 35 according to the present invention also uses in the embodiment of yarn splicing device 10 as shown in Figure 3
Other additional yarn arrestment mechanisms 36.That is, it is narrow with regard to its width B and by threaded connection 39 be installed in air distribution
The yarn prism 19 that connects on unit 33 is not only equipped with the Yarn braking part 35 being made of attachment plate 18, is also keeping shredding tubule
34 regions have other Yarn brakings mechanism 36.
Preferably exist respectively by bolt 38 connecing 20 end side of yarn channel and be installed in the attachment plate 18 connect on yarn prism 19
This is respectively provided with the groove 27 in thread-like structure, the yarn and thread head that is located at groove 27 in of the structure to upper yarn and lower yarn
31,32 play the role of retardation motion, and Yarn braking mechanism 36 is for example by keeping the contact in 34 region of shredding tubule
Face is constituted, with relatively rough surface.
As shown in figure 3, keeping shredding tubule 34 (yarn and thread head is ready for connecing yarn process wherein) at this time as common
Like that slightly with connect yarn prism 19 and arrange at interval.
The difference of the second embodiment as shown in Figure 4 and the aforementioned embodiments according to Fig. 3 of yarn splicing device 10 is main
It is to abandon using the additional Yarn braking mechanism 36 for being set to and keeping in 34 region of shredding tubule.
That is, having fixed on air distribution unit 33 according to the yarn splicing device 10 of Fig. 4 and having acceptable air-flow
Connect yarn channel 20 connect yarn prism 19 and slightly with connect the spaced holding shredding tubule 34 of yarn prism 19.
As in embodiment according to Figure 3, yarn is equipped in 20 end side of yarn channel that connects for connecing yarn prism 19 respectively
Line brake component 35 is made of attachment plate 18.
As knowing in the yarn splicing device 10 according to Fig. 3, each attachment plate 18 has a groove 27, groove tool
There is the structure in shape of threads, which plays retardation motion to the yarn and thread head 31,32 of upper yarn and lower yarn being placed into groove 27
Effect and especially in elastomer yarn prevent yarn and thread head excessive entanglement after truncation.
Have the function of the yarn splicing device 10 of embodiment as shown in Figure 2 and Figure 4:
Occur when for example being cut off because of broken yarn or controllable yarn clearer on a winding position 2 in automatic cross winding machine 1
When winding interrupts, the yarn and thread head of upper yarn 31 generally falls on rotatably mounted intersected coiled bobbin in the bobbin cradle 28 of winding position 2
On the surface of son 15, and the yarn and thread head of lower yarn 3 is fixed in the yarn tensioner being set to above coil 9 slightly spacedly.
That is, the yarn clearer of winding position 2 triggers the yarn clipping function of yarn tensioner when lacking dynamic yarn signal.
Then, the yarn and thread head for the lower yarn 32 being maintained in yarn tensioner is taken by clamp yarn cop 25, and clamp yarn cop is first thus
First it is pivoted in yarn tensioner region and is sucked there the yarn and thread head for the lower yarn 32 decontroled by yarn tensioner.
When the yarn and thread head that the lower yarn 32 of successfully receiving is for example recorded by the (not shown) sensor being set in clamp yarn cop 25
When, clamp yarn cop 25 is pivoted to operating position thereon.Lower yarn 32 be placed at this time connect loose thread 19 connect yarn channel 20, yarn under working cutting
It is connect with the yarn blank 11 " and respective be set to of the gripper member 17 ' of clamping device 17 and the cutting of upper yarn and clamping device 11
In the Yarn braking part 35 of 20 two sides of yarn channel.
Simultaneously or almost simultaneously, the yarn and thread head of the upper yarn 31 fallen on cross winding bobbin 15 is also accepted.That is, suction nozzle 12
It is pivoted to the surface region of cross winding bobbin 15 and the yarn and thread head of yarn 31 being located on surface is sucked.Suction nozzle 12 is also by upper yarn
31 connect connecing yarn channel 20, cut off set on the Yarn braking part 35 for connecing 20 two sides of yarn channel and upper yarn into yarn splicing device 10
With the yarn blank 17 " of gripper member 11 ' and the yarn under working cutting and clamping device 17 of clamping device 11.
Then, it connects yarn channel 20 to be closed, that is, cover piece 23 is transferred into bonding station by pivot driver mechanism 40.
After connecing yarn channel 20 and closing, yarn cutting and clamping device 11,17 is activated and lower yarn and upper yarn 31,32 quilts
Cutting.The cut-off yarn and thread head of lower yarn 32 passes through clamp yarn cop 25 herein and the cut-off yarn and thread head of upper yarn 31 passes through suction nozzle 12
It is excluded.
Upper yarn and lower yarn 31,32 are located at itself the free yarn connect in yarn channel 20 connect in 19 region of yarn prism
Head is reliably fixed by Yarn braking part 35 herein, they are reliably prevented excessive entanglement.
Upper yarn 31 and lower yarn 32 it is that yarn channel 20 stretches out, fixed by Yarn braking part 35 from connecing for yarn prism 19 is connect
Yarn and thread head is then inhaled into one of them respectively and receives in the holding shredding tubule 34 of negative pressure and be ready there.On that is,
The yarn and thread head of yarn 31 and lower yarn 32 at least partly gets rid of its yarn twirl and staple fiber by air-flow in keeping shredding tubule.
Then, the fixed yarn and thread head such ready and in Yarn braking part 35 of upper yarn 31 and lower yarn 32 is for example
It is drawn by so-called (not shown) ring pull-out element etc. and connects the connecing in yarn channel 20 of yarn prism 19, thus yarn and thread head 31,32
It is in place side by side with defined overlapping degree in connecing yarn channel 20.
By the corresponding control of solenoid valve, with being followed by yarn air and be blown into connect yarn channel 20 and be located at through mouth blown 22 to connect yarn
It is in channel 20, empty by connecing yarn by the yarn and thread head of the fixed upper yarn 31 of Yarn braking part 35 and lower yarn 32 as before
Gas is by mutual scrollwork, to the almost yarn engagement as yarn occur.That is connecing connecing for yarn prism 19 by being set to
The Yarn braking part 35 of the two sides of yarn channel 20 come guarantee yarn and thread head 31,32 with yarn cutting and clamping device 11 and 17 be truncated
Later will not excessive entanglement, and make them or can not be inhaled into again in shredding pipe 34 or upper yarn and lower yarn 31,32 are set
Set it is too short in the yarn section for connecing the overlapping in yarn channel 20, so as to be able to achieve according to regulation yarn engagement.