CN106637554A - Ball yarn brake for double twisting spindle - Google Patents
Ball yarn brake for double twisting spindle Download PDFInfo
- Publication number
- CN106637554A CN106637554A CN201611114138.XA CN201611114138A CN106637554A CN 106637554 A CN106637554 A CN 106637554A CN 201611114138 A CN201611114138 A CN 201611114138A CN 106637554 A CN106637554 A CN 106637554A
- Authority
- CN
- China
- Prior art keywords
- yarn
- brake
- spring
- feeding pipe
- spherical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/10—Tension devices
- D01H13/104—Regulating tension by devices acting on running yarn and not associated with supply or take-up devices
- D01H13/106—Regulating tension by devices acting on running yarn and not associated with supply or take-up devices for double-twist spindle
Abstract
The invention relates to a ball yarn brake for a double twisting spindle, comprising a tubular brake housing consisting of an upper housing section and a lower housing section in threaded connection thereto; a yarn feeding pipe coaxially rotatably mounted in the upper housing section; an upper brake surface ring corresponding to the yarn feeding pipe and the height of which is adjusted by rotating the yarn feeding pipe; a brake ball cooperating with the brake surface ring; a piston guided sealingly in the lower housing section and capable of rotating axially, which piston carries a lower brake surface ring on the outside of its upwardly directed bottom, and which is adjustable downwards in the axial direction by means of suction force against the force of a restoring spring; a holding device arranged between the two brake surface rings for the brake ball; a braking force adjusting device acting on a brake unit consisting of the two brake surface rings and the brake ball, and characterized in that the holding device for the brake ball is mounted on the lower end of a sleeve carrying the upper brake surface ring.
Description
Technical field
The present invention relates to a kind of spherical Yarn Brake.
Background technology
In two-for-one twister, treat that twist yarn is entered before rotary spindle, it is necessary to be applied in certain yarn pulling force.Must fit
When yarn pulling force is selected, so as to ensure stable twisting process within the whole service time of bobbin.The mark of required yarn tension
Standard is：Do not allow during whole service of the bobbin on twisting spindle yarn storage disk less than minimum yarn storage amount, so that air ring keeps
It is stable shaped.If yarn storage amount is less than the value, then when there is small interference, (quality fluctuation in air ring, has on bobbin
Link) when, air ring has just had the tendency of temporary transient flat contracting.To now occur that air ring is surprisingly contacted with ingot tank edge, may
Yarn can be caused impaired until broken yarn.If pooling capital raw yarn in addition, in order to support yarn movement, additionally using to rotate freely
Flier, raw yarn is supplied to into yarn feeding pipe and the Yarn braking being placed in inside bobbin through flier and via guide eye
Device.Flier rotates in the case, and also causes a certain degree of Yarn braking (pre- in addition to real Yarn Brake
Tension force), this can also be changed by additional bob-weight.
It was verified that so-called capsule brake (Kapselbremsen) is well suited as Yarn Brake.These brakings
The key component of device is a braking capsule being clamped between two braking face rings (typically two ceramic guide eyes),
The braking capsule is made up of top, bottom and the spring for clamping therebetween, and the spring will brake capsule spherical crown towards braking
Face ring is extruded.Yarn is passed through between two clamping points.For common embodiment, adjust between two braking face rings
Distance, you can adjust spring clamp effect, the normal force to yarn applying and thus to the braking action of yarn.It is usual for this
The height of adjustable yarn feeding pipe, on the one hand for space reasons, on the other hand because yarn is into the Angulation changes in yarn feeding pipe,
Therefore it is not intended to adjustment height.
The adjustment was carried out before twisting process starts, and was kept during winder constant.It is different in order to be directed to
Yarn, material and spindle size cover in general common yarn tension scope, have some to have opening for the spring of different dynamics
Power capsule, or have some to change tension force of spring capsule according to required brake force.This way is cumbersome, because one
Aspect changes capsule and to spend the time, on the other hand needs various capsule types.The latter can cause operating element expense to improve, and
And without in the case of identifying capsule in not confusing mode, then may result in and obscure capsule.
Need raw yarn to be penetrated in these brakes and its yarn guide, or entrying instrument (for example using corresponding auxiliary
Long plastic wire) penetrate by hand, or using pneumatic entry device, wherein causing yarn to pass through by gas automatically using suction airflow
The passage that dynamic effect is opened.
Basis claim 1 describes a kind of spherical yarn that spring force can be utilized to adjust in the B1 of EP 2 336 408
Linear brake, it has upper braking face ring, lower braking face ring and the detent ball between the two braking face rings.Brake force is adjusted
Whole spring is clamped or is acted between the top surface of braking face ring and spring element bearing, and this is in assembling and/or maintains
Difficulty is may result in during Yarn Brake.Spring force is adjusted by way of adjusting yarn feeding pipe height step by step, so as to change work
For the power of upper braking face ring.When it is pneumatic pass inside or through yarn or yarn when, using negative pressure so that lower braking surface ring is moved downward,
So as to opening is available for air-flow through the path of brake so that the yarn for being adjacent to yarn feeding pipe upper end passes through whole brake.Braking
Or ball is now laterally avoided, or being adjacent on the receiving element for constituting brake casing ingredient, so as to for yarn or
Yarn opens path.When the housing of brake is opened for example in order to carry out typically maintenance or cleaning, there is detent ball
The danger for coming off and losing.
The content of the invention
The task of the present invention is a kind of spherical Yarn Brake of design, so as to ensure that detent ball is being maintained and cleaned
Will not come off from brake casing during work.
In order to pneumatic entry and therefore the lower braking surface ring that causes under adjust when prevent detent ball from staying in lower braking
In face ring, brake at two and the braking ball capturing device form that can be worked during pneumatic entry is provided between face ring
Detent ball holding meanss, it is arranged on the lower end for carrying the sleeve for braking face ring, and its structure design is the present invention the
The theme of two aspects.
It is described according to a second aspect of the present invention in order to avoid yarn feeding pipe height adjustment (in order to adjust brake force), the present invention
Extended core thought be merely adjustment brake force to be caused by the rotation of yarn feeding pipe.Upper braking face ring is incorporated into for this
The rotary motion of yarn feeding pipe can be transformed in the element of the axially-movable of upper braking face ring.
Description of the drawings
Hereinafter will be described in detail in accordance with the accompanying drawings the present invention：
Fig. 1 shows axial section of the Yarn Brake of the present invention in the first adjustment position；
Fig. 2 shows the axial section according to Fig. 1, but is in and be have rotated in 90 ° of position relative to Fig. 1；
Fig. 3 and Fig. 4 show the axial section according to Fig. 1 and Fig. 2, and Yarn Brake is in the second adjustment position；
Fig. 5 shows that axial direction of the Yarn Brake of the present invention during pneumatic entry in the first adjustment position is cutd open
Face, it corresponds to the first adjustment position shown in Fig. 1 and Fig. 2；
Fig. 6 shows the axial section of Yarn Brake shown in Fig. 5, and Yarn Brake is in and be have rotated relative to Fig. 5
In 90 ° of position；
Fig. 7 and Fig. 8 show the axial section according to Fig. 5 and Fig. 6, in being in the second adjustment position；
Fig. 9 shows the amplification axial section of the bottom of Yarn Brake shown in Fig. 4；
Figure 10 shows the amplification axial section on the top of Yarn Brake shown in Fig. 4；And
Figure 10 B show the radial section cut open according to the cutting line A-A or B-B in accompanying drawing 10.
Reference numerals list
1 brake casing
2 upper shell sections
2.1 lock groove
2.3 lock ring
2.4 window
3 lower house sections
3.1 support lug
4 yarn feeding pipes
4.1 lock ring
4.2 arm
4.3 protuberance
4.4 locking lugs
5 sleeves with the groove or chute guider being arranged on outside
5.1 spiral helicine grooves or chute guider
5.2 flange ring
5.3 locking lugs
Face ring (ceramic guide eye) is braked on 6
7 detent balls
8 holding elements
9 working pistons
9.1 piston base
9.2 pipe joint
10 times brakings face ring (ceramic guide eye)
11 spring guide sleeves
12 return springs
13 spring support sleeves
13.1 arms
13.2 locking lug
13.3 support lugs
14 brake force adjust the braking force adjustment device of form of springs
Specific embodiment
Yarn Brake shown in Fig. 1 and Fig. 2 basically comprises following part：
The brake casing 1 of-tubulose, it is by a upper shell section 2 and one with releasable mode and upper housing portion
The connected lower house section 3 of section 2 is constituted,
- yarn feeding pipe 4 in upper shell section 2, rotatably installing is co-axially inserted, the yarn feeding pipe is utilized to evagination
It is going out, be joined to (be placed in upper shell section 2) lock ring 4.1 in lock groove 2.1 prevent yarn feeding pipe move axially,
- arm 4.2 on yarn feeding pipe, extending laterally in yarn feeding pipe is disposed or forms in, it is mounted with the lower end of arm
Protuberance 4.3 on the inside of sensing；
- prevent rotate sleeve 5, its have be arranged in outside on spiral helicine groove or chute (Kulissen) be oriented to
Device 5.1, its protuberance 4.3 with the constant or non-constant pitch of spiral path 5.1, yarn feeding pipe 4 is joined to these spiral shells
Among rotation path.
The length of the adjustment stroke of face ring 6 is braked in the length determination of sleeve 4, and can be according to required range of application
It is appropriate to select.Sleeve 5 has flange ring 5.2 in its lower end, the flange ring according to preferably have shown in Fig. 9 two it is mutually opposing
Locking lug 5.3, in being joined to lock groove not shown in figure, being arranged on the inwall of upper shell section 2, to prevent sleeve 5
Rotation.
Can be threaded connection, clip or bayonet connection interfix two shell parts.
In the lower end of the insertion sleeve 5 of upper braking face ring 6 of ceramic guide eye form.
Further, it would be desirable to provide：
The detent ball 7 of-upper braking face ring 6 that reclines；
- it is arranged in the holding meanss for detent ball 7 below the flange ring 5.2 of sleeve 5, forming trap setting；Should
Holding meanss have at least two mutually opposing, aduncate holding elements 8, below master of the free end less than detent ball 7
Diameter, so as to as it is following also by description as in pneumatic opening brake when prevent detent ball 7 from coming off；
In lower house section 3, the piston is pointed up at it for sealing guiding, axially movable piston 9
Bottom 9.1 outside on carry lower braking face ring 10 preferably in ceramic guide eye form, for detent ball 7.
Lower house section 3 its lower end have point on the inside of support lug 3.1, for piston 9, preferably in pretightning force
The spring guide sleeve 11 of the return spring 12 under effect is supported in the support lug.Downwardly directed pipe joint 9.2 connects
To the inner side of piston base 9.1, the pipe joint can be wrapped relative to the spring support sleeve 13 that pipe joint 9.2 is moved axially
Enclose.Spring support sleeve 13 is held thereon with support lug 13.1 outwardly directed, for the upper end of return spring 12.The spring
Splicing sleeve 13 in the range of its top side have towards piston base 9.1 inner side be pressed against, in brake force adjust the form of spring 14
Braking force adjustment device, depending on the required range of application of Yarn Brake, brake force adjustment spring has and accordingly sets
The spring rate of meter.If upper braking face ring 6 is fixed in the final position of top, when Yarn Brake is in shown in Fig. 3 and Fig. 4
When in adjustment position, the brake force adjustment spring 14 will occupy its position for almost relaxing.Shown tune in fig. 1 and 2
In whole position, when face ring 6 is braked in adjustment downwards, the brake force adjustment spring 14 will be in its shape for almost compressing completely
In state, the yarn that thus brake force 14 pairs, the spring of adjustment is continued through applies highest brake force.
In order to further improve brake force, it may be preferred to continued in adjustment downwards by correspondingly designing the size of sleeve 5
Braking face ring 6, so that return spring 12 is also loaded and equally plays a part of brake force adjustment spring.
Arm 13.1 with outwardly directed locking lug 13.2 is arranged on the lower end of spring support sleeve 13, the locking
Lug can be contacted with the spacing ring 11.1 on the inside of the sensing of spring guide sleeve 11.
A kind of Advantageous embodiments of the invention, can save brake force adjustment spring 14, and act on piston 9
Return spring 12 individual play brake force adjustment spring effect, the brake force adjusts spring preferably for example in its length range
The interior section different with spring rate.
Can be between the extreme operating position shown in Fig. 1 and Fig. 2 and Fig. 3 and Fig. 4 and in Fig. 5 and Fig. 6 and Fig. 7 and Tu
Extremely entrying Yarn Brake of the present invention of adjust between position shown in 8.
In order to penetrate into or through yarn or yarn, negative pressure is applied by the central opening to lower house section 3 so that lower to live
Plug 9 overcomes the power of return spring 12 to drop to position of entrying from operating position, and now detent ball 7 is kept the holding element of device
8 catch or hold, and release the connection with yarn feeding pipe 4, so as to cause to be clamped in the upper end of yarn feeding pipe 4 using suction air
Yarn pass through Yarn Brake.
Outwardly directed spring-loaded locking lug 4.4 is arranged on yarn feeding pipe 4, the locking lug engagement is to cloth
Among putting the retainer of lock ring 2.4 on the inner periphery of upper shell section 2.It is mounted with yarn feeding pipe 4 and prolongs in circumferencial direction
Stretch (not shown in figure) numeric scale (can by being arranged in upper shell section 2 in window 2.5 see), so as to
Bonding station according to locking lug 4.4 in lock ring 2.4 reads the corresponding rotation position of yarn feeding pipe 4, and is recognized with this
The height and position of upper braking face ring (6) and the brake force for adjusting accordingly.
In order to obtain very big brake force scope using known capsule-type Yarn Brake, it is so far as previously mentioned
Only need with trouble and therefore unfavorable mode using the various capsules with different braking power scope because it is each individually
Capsule depends particularly on the spring force of the spring in capsule, can only be respectively for limited brake force scope.
The shortcoming is eliminated using spherical Yarn Brake of the present invention, wherein the brake force for causing brake force is adjusted
Device is arranged in the lower lower section of braking face ring 10, and
- adjust the form of spring 14 in brake force as modification A；
- as modification B, the form of spring 14 is adjusted in the brake force aided in by return spring 12, or
- as modification C, in the simple form of return spring 12.
Claims (12)
1. a kind of spherical Yarn Brake for two-for-one twisting spindles, the spherical Yarn Brake includes：
The brake casing (1) of-tubulose, the brake casing is by upper shell section (2) and can be with the upper shell section can release
The lower house section (3) that the mode of putting connects is constituted；
- yarn feeding the pipe (4) that can be installed in the upper shell section (2) coaxial rotating；
- corresponding to the upper braking face ring (6) of the yarn feeding pipe (4), the height adjustment of face ring is braked on this by rotating described feeding
Spool (4) is realized；
- the detent ball (7) interacted with upper braking face ring (6)；
- piston (9) guiding, can moving axially, the piston are sealed in the lower house section (3)
- lower braking face ring (10) is carried on the outside of its bottom (9.1) for pointing up, and
- in order to yarn or the pneumatic of yarn pass through, using suction the power of return spring (12) can be overcome to adjust downwards in the axial direction,
- the holding meanss for the detent ball being arranged between described two braking face rings,
- act on by described two braking force adjustment devices for braking the brake unit that face rings and the detent ball are constituted,
Characterized in that,
- it is arranged in the sleeve (5) for carrying upper braking face ring (10) for the holding meanss of the detent ball (7)
On lower end.
2. spherical Yarn Brake according to claim 1, it is characterised in that the holding meanss have at least two phases
Mutual opposed, aduncate holding element (8), the free end of the holding element is less than the diameter of the detent ball (7).
3. spherical Yarn Brake according to claim 1 and 2, it is characterised in that the yarn feeding pipe (4) is preventing axial direction
Mobile mode rotates installation, and acts on the upper braking surface by the element (5) for being changed into rotary motion and moving axially
Ring (6).
4. spherical Yarn Brake according to any one of claim 1 to 3, it is characterised in that the brake force adjustment
Spring (14) installed in can be in the piston (9) on the spring support sleeve (13) of axial movement, the return spring (12)
The spring support sleeve is exerted a force on the direction of the lower braking face ring.
5. spherical Yarn Brake according to claim 4, it is characterised in that the spring support sleeve (13) is held thereon
Support lug (13.3) with the outwardly directed upper end for the return spring (12), under the return spring (12)
End is supported on the lower end of the lower house section (3) by the support lug (3.1) on the inside of sensing.
6. the spherical Yarn Brake according to claim 4 or 5, it is characterised in that the piston (9) is equipped and is connected to
The inner side pipe joint (9.2) of the opening of the piston base (9.1) and lower braking face ring (10), the spring supporting set
(13) it is directed axially on pipe joint on the inside of this.
7. the spherical Yarn Brake according to any one of claim 4 to 6, it is characterised in that be provided be arranged in it is described
In lower house section (3) and the spring guide sleeve (11) of the return spring (12), the spring support sleeve (13) is supported to exist
Be directed in the spring guide sleeve, the spring support sleeve is equipped with outwardly directed locking lug (13.2), for institute
State the stop flange (13.3) on the inside of the sensing of spring support sleeve (13) to interact.
8. the spherical Yarn Brake according to any one of claim 3 to 7, it is characterised in that the element (5) is energy
Enough axial movement, anti-rotational sleeve (5) in the upper shell section (2), the sleeve has spiral helicine cunning in outside
Groove guider (5.1), the protuberance (4.3) on the inside of sensing is joined in the chute guider, and the protuberance is described
The part of yarn feeding pipe (4).
9. spherical Yarn Brake according to claim 8, it is characterised in that be provided with and be arranged laterally on the yarn feeding pipe
(4) the forked arm (4.2) on, the protuberance (4.3) is placed on these arms.
10. spherical Yarn Brake according to claim 8 or claim 9, it is characterised in that upper braking face ring (6) arrangement
At the lower end of the sleeve (5).
11. spherical Yarn Brakes according to any one of claim 1 to 10, it is characterised in that be provided with and be arranged in institute
State on yarn feeding pipe (4), outwardly directed locking lug (4.4), the locking lug engagement is to being arranged in the upper housing portion
In lock ring (2.4) on the inwall of section (2), the lock ring has radially-inwardly prominent retainer.
12. spherical Yarn Brakes according to claim 11, it is characterised in that be provided with and be placed in upper shell section (2)
In window (25), the window be used for check the numeric scale being disposed in a circumferential direction at yarn feeding pipe (4) place, the numeric scale root
Bonding station according to locking lug (4.4) in lock ring (2.4) indicates the corresponding rotation position of the yarn feeding pipe (4), and
Thereby indicate that depending on the brake force of the setting of the height and position of upper braking face ring (6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015118878.3A DE102015118878B3 (en) | 2015-11-04 | 2015-11-04 | Ball thread brake for a double-twisting spindle |
| DE102015118878.3 | 2015-11-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106637554A true CN106637554A (en) | 2017-05-10 |
| CN106637554B CN106637554B (en) | 2019-04-30 |
Family
ID=57240865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611114138.XA Active CN106637554B (en) | 2015-11-04 | 2016-11-01 | Spherical Yarn Brake for two-for-one twisting spindles |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3168343B1 (en) |
| CN (1) | CN106637554B (en) |
| DE (1) | DE102015118878B3 (en) |
| ES (1) | ES2744196T3 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563641A (en) * | 1949-01-12 | 1951-08-07 | Comptoir Textiles Artificiels | Double twist spindle |
| US4287712A (en) * | 1978-07-10 | 1981-09-08 | Palitex Project Company Gmbh | Pneumatically disengageable self-threading yarn brake mechanism in a hollow spindle assembly of a textile yarn processing machine and related method |
| DE3134763A1 (en) * | 1981-09-02 | 1983-06-30 | Palitex Project-Company Gmbh, 4150 Krefeld | Thread brake for a two-for-one twisting spindle |
| DE3243157A1 (en) * | 1982-11-23 | 1984-05-24 | Palitex Project-Company Gmbh, 4150 Krefeld | Yarn brake with an associated threading device actuated by compressed air, especially for two-for-one twisting spindles |
| US4468920A (en) * | 1981-02-11 | 1984-09-04 | Palitex Project-Company Gmbh | Pneumatically threadable yarn brake and a two-for-one twisting spindle equipped therewith |
| US4574576A (en) * | 1982-09-07 | 1986-03-11 | Murata Kikai Kabushiki Kaisha | Tension device |
| DE4010019A1 (en) * | 1990-03-29 | 1991-10-02 | Palitex Project Co Gmbh | Yarn folding machinery - has yarn directional guides suitable for hollow spindles |
| CN101307516A (en) * | 2007-05-16 | 2008-11-19 | 欧瑞康纺织有限及两合公司 | Yarn braker loaded by spring |
| CN102102251A (en) * | 2009-12-18 | 2011-06-22 | 欧瑞康纺织有限及两合公司 | Yarn tension device for a double-strand twisting spindle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1923309U (en) * | 1965-05-29 | 1965-09-09 | Berliner Maschb Actien Ges Vor | THREAD BRAKE FOR TWISTING MACHINES. |
| DE3336715C2 (en) * | 1983-10-08 | 1986-03-20 | Palitex Project-Company Gmbh, 4150 Krefeld | Thread brake |
-
2015
- 2015-11-04 DE DE102015118878.3A patent/DE102015118878B3/en not_active Expired - Fee Related
-
2016
- 2016-10-28 ES ES16196201T patent/ES2744196T3/en active Active
- 2016-10-28 EP EP16196201.4A patent/EP3168343B1/en active Active
- 2016-11-01 CN CN201611114138.XA patent/CN106637554B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563641A (en) * | 1949-01-12 | 1951-08-07 | Comptoir Textiles Artificiels | Double twist spindle |
| US4287712A (en) * | 1978-07-10 | 1981-09-08 | Palitex Project Company Gmbh | Pneumatically disengageable self-threading yarn brake mechanism in a hollow spindle assembly of a textile yarn processing machine and related method |
| US4468920A (en) * | 1981-02-11 | 1984-09-04 | Palitex Project-Company Gmbh | Pneumatically threadable yarn brake and a two-for-one twisting spindle equipped therewith |
| DE3134763A1 (en) * | 1981-09-02 | 1983-06-30 | Palitex Project-Company Gmbh, 4150 Krefeld | Thread brake for a two-for-one twisting spindle |
| US4574576A (en) * | 1982-09-07 | 1986-03-11 | Murata Kikai Kabushiki Kaisha | Tension device |
| DE3243157A1 (en) * | 1982-11-23 | 1984-05-24 | Palitex Project-Company Gmbh, 4150 Krefeld | Yarn brake with an associated threading device actuated by compressed air, especially for two-for-one twisting spindles |
| DE4010019A1 (en) * | 1990-03-29 | 1991-10-02 | Palitex Project Co Gmbh | Yarn folding machinery - has yarn directional guides suitable for hollow spindles |
| CN101307516A (en) * | 2007-05-16 | 2008-11-19 | 欧瑞康纺织有限及两合公司 | Yarn braker loaded by spring |
| CN102102251A (en) * | 2009-12-18 | 2011-06-22 | 欧瑞康纺织有限及两合公司 | Yarn tension device for a double-strand twisting spindle |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3168343B1 (en) | 2019-06-12 |
| CN106637554B (en) | 2019-04-30 |
| EP3168343A1 (en) | 2017-05-17 |
| DE102015118878B3 (en) | 2017-03-16 |
| ES2744196T3 (en) | 2020-02-24 |
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| SE01 | Entry into force of request for substantive examination | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20191216 Address after: Crayfield, Germany Patentee after: If the cable technology & Limited by Share Ltd Address before: Lei Xian Patentee before: Saurer Germany GmbH & Co KG |