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WO2008098873A1 - Dispositif de bobinage - Google Patents

Dispositif de bobinage Download PDF

Info

Publication number
WO2008098873A1
WO2008098873A1 PCT/EP2008/051520 EP2008051520W WO2008098873A1 WO 2008098873 A1 WO2008098873 A1 WO 2008098873A1 EP 2008051520 W EP2008051520 W EP 2008051520W WO 2008098873 A1 WO2008098873 A1 WO 2008098873A1
Authority
WO
WIPO (PCT)
Prior art keywords
thread
winding
groove
yarn
coil
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.)
Ceased
Application number
PCT/EP2008/051520
Other languages
German (de)
English (en)
Inventor
Siegfried Theilig
Siegfried Heubaum
Hans-Jürgen Heinrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Priority to DE112008000259T priority Critical patent/DE112008000259A5/de
Publication of WO2008098873A1 publication Critical patent/WO2008098873A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/40—Arrangements for rotating packages
    • B65H54/46—Package drive drums
    • B65H54/48—Grooved drums
    • B65H54/485—Grooved drums with an auxiliary guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H55/00—Wound packages of filamentary material
    • B65H55/04—Wound packages of filamentary material characterised by method of winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/28—Reciprocating or oscillating guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a winding device for winding a thread into a bobbin according to the preamble of claim 1 and to a method for winding a thread into a bobbin according to the preamble of claim 10.
  • a traversing or traversing device moves the thread running onto the spool onto the spool in such a way that a stable spool construction with as constant a packing density as possible and good running properties for the subsequent further processing is obtained. It should be noted that with increasing winding speed the complexity and thus the technical and especially the economic effort is constantly increasing.
  • the traverse system with downstream Nutenwalze is technically complex and also much more expensive.
  • the thread is transferred from the traversing boat in the Nutenwalze and stored by them very accurately on the coil winding.
  • the traverse boat is longer and thus better over the intersections, so that at this point almost no wear is caused. Due to the greater length, the reversal points are designed to be much gentler, so that even here lower forces occur.
  • the winding speed can be increased to approx. 4500 m / min with a corresponding service life of the trawling shuttle.
  • the production of Nutenwalze is very expensive.
  • the groove has at each point of the circumference a different shape (thread inlet) and another depth (traversing triangle).
  • the entire grooved roller is protected against wear and corrosion by a special surface coating.
  • the bearing of the Nutenwalze is located in the same housing as the Kehrgewindewelle, the drive is made with a constant gear ratio at the front end of the shaft of the Kehrgewindewelle. With this Aufspulart the highest quality coil construction - thus best drainage properties - can be achieved.
  • two counter-rotating 3-armed wings are per winding point appropriate. They are connected from one winding unit to the winding unit by means of a toothed belt, so that the drive can take place centrally. It should be noted that one wing per winding unit is driven by a hollow shaft. Manufacturing technology particularly problematic are the wing tips. They must be designed and adjustable in such a way that the same stroke is present at each winding station and the yarn transfer at the coil ends takes place exactly from one wing to the other wing (position of the thread to the edge of the coil). With this traversing is currently wound up to 8000 m / min.
  • the quality of the bobbin assembly corresponds approximately to that of the system Kehrgewindewelle-Changierschiffchen without Nutenwalze. Damage to the thread by hitting the wings on the thread when changing direction can not be ruled out. There are known producers who do not use wing winging for this reason.
  • the first option is to make the groove, which pushes the thread outwards, extremely deep. At the intersection, the groove, which leads inwards, becomes extremely flat. So it is possible to realize with a Nutau written mispickr of about 100mm strokes to about 150mm.
  • this method has the disadvantage that the thread length between the last run-off point of the thread in front of the bobbin and the casserole point on the bobbin fluctuates so much that the stretch limit of the thread is exceeded and thread damage occurs. Therefore, this principle is used only in natural fiber spinning for rewinding (eg from spinning machine to coil). Here just the amount is deducted from the cop, which is currently needed. In chemical fiber production, this principle is not applicable due to continuous delivery. Extreme damage to the thread is to be expected especially with POY yarns, as these are not yet fully stretched.
  • the second option is the grooved drum with prechangling in the form of a counterbore shaft with a squeegee.
  • This species combines two different types of oscillation in one and is correspondingly expensive.
  • the Doppelhubiere and according to the winding speed depending on the advance of the Nutenwalze (peripheral speed of the Nutenwalze on the groove bottom is faster than the winding speed) by about 5% to 25% for the same life of the thread slider can be increased. If the original double stroke number is maintained, the lifetime increases to almost double.
  • the peculiarity of the thread is used, not to exceed the intersection of the groove on the circumference of the groove roller to the outside, but to commute between two adjacent intersections of the groove.
  • This finding makes use of the invention in which the last thread run-off point in the thread run is held in each case between the corresponding crossing points of the groove in front of the groove roll.
  • the yarn drain point of the yarn dens is held for entry into the groove on the circumference of the groove roller alternately between the adjacent intersection points of the groove, wherein the thread is alternated in several partial strokes between the intersection points and each wound to Generalaufspulieux.
  • the guide means is designed to be movable, so that the thread discharge point is held alternately in several positions between each adjacent intersection points.
  • the yarn discharge point of the guide means is determined by a yarn guide, which is coupled to a controllable displacement drive according to an advantageous embodiment of the invention.
  • the yarn guide can thereby lead and hold alternately in several positions within a guideway parallel to the grooved roller. This makes it possible to realize fast and safe position changes of the thread discharge point. By moving the thread guide this is transferred without delay directly to the next position to be approached.
  • the displacement drive is preferably associated with a control unit, by which the displacement drive can be activated outside a holding time of the thread guide.
  • the holding times of the thread guide in one of the positions for winding one of the Operaaufspulungen are preferably determined by a control device which is coupled to the control device of the displacement device. So Any desired holding times of the thread guide and thus of the thread outlet point can be adjusted in front of the groove roller.
  • each point of discontinuity formed in the groove on the circumference of the groove roller is defined here as a crossing point in the form of an intersection of two groove sections or in the form of a meeting point of two groove sections.
  • the closed crossing points are preferably formed at the end of a grooved roll to initiate a thread reversal during winding at the Generalaufspulung.
  • a total stroke which encompasses the entire winding width, can be formed both at the two ends of the grooved rolls by closed intersection points or open intersection points.
  • the limitation of the total stroke in a multi-thread winding device is preferably formed by openly executed crossing points of the groove.
  • the peripheral speed of the coil is kept substantially constant, so that a substantially constant yarn tension is maintained when winding it thread.
  • the coil is preferably held on a projecting winding spindle, which is coupled to a spindle drive.
  • the groove roller is connected to a roller drive, wherein the roller drive and the spindle drive can be controlled separately by the control device. This means that both the double strokes when the thread travels and the initial speed of the spool can be adjusted independently of each other.
  • the development of the invention is preferably used, in which a plurality of coils are wound simultaneously on the winding spindle.
  • a thread guide is assigned to each groove of the groove roller, wherein the thread guides can be positioned together by the displacement drive for winding the partial windings of the coils.
  • the method according to the invention is characterized in particular by the fact that the deflection of the thread during oscillation is limited to the part strokes and thus low thread tension fluctuations are caused by the traversing movement of the thread. This makes it possible to form very uniform partial windings which are produced with a substantially constant winding tension.
  • Another advantage of the method is given by the fact that the traversed triangle formed between the thread discharge point and the traversing device can be kept short due to the partial strokes, which is particularly useful for a compact design.
  • the method variant is preferably used, in which the thread run-off point of the thread is held for entry into the groove in each case symmetrically between the intersection of the groove.
  • the thread discharge point is preferably determined by a thread guide, which is guided and held alternately in a plurality of positions along a straight guide track.
  • the yarn drain point is preferably held stationary for a period of a holding time in the respective position. In this case, it is determined by the holding time, how much thread layers are stored in each case in the Generalaufspulonne.
  • the holding times of the thread discharge point can be specified individually and be formed equal or unequal size for each partial coil.
  • the method variant is preferably carried out, in which the holding times of the thread drain point to Wi- disgusting the sectionaufspulonne at the ends of the coil are greater than the holding times of the thread discharge point for winding the remaining sectionaufspulonne. So lets the thread drain point by a cyclical reciprocating movement in succession in each of the positions.
  • the holding time at the ends of the coils for winding the respective Operaauspulitch is preferably twice as large as the holding time in the remaining sectionaufspulonne.
  • the variant of the method in which the thread discharge point without holding times continuously changes the positions several times in succession is particularly suitable for obtaining a stable package structure in the case of a plurality of partial packages of the package.
  • the individual thread transitions can be supplemented by individual thread layers when moving the thread discharge point.
  • the groove roller and the coil can be driven independently.
  • the peripheral speeds of the spool and the grooved roll can be matched to one another such that the grooved roll is driven with a slight lead.
  • the inventive coil is particularly suitable for storing a large amount of thread in a single coil.
  • the thread layers are wound in several Partspspulonne, which lie directly next to each other within the Spul Harbor.
  • the sectionaufspulonne be carried out with an equal diameter end diameter.
  • one of the Partaufspulonne to identify the coil with a smaller diameter or a larger diameter. The invention will be explained in more detail with reference to some embodiments of the winding device according to the invention.
  • FIGS. 2 to 4 schematically show a further exemplary embodiment of the device according to the invention
  • FIG. 5 shows schematically a coil structure of a coil according to the invention
  • Fig. 6 shows schematically a further embodiment of the winding device according to the invention
  • a first embodiment of the winding device according to the invention is shown schematically.
  • the embodiment shows a traversing device 1, which is formed by a grooved roller 3.
  • a grooved roller 3 At the periphery of the grooved roll 3 an endless groove 4 is introduced for guiding a yarn.
  • the groove 4 runs helically on the circumference of the groove roller 3 and forms a plurality of crossing points 5.1, 5.2, 5.3, 5.4 and 5.5.
  • the intersections 5.1 and 5.5 which are respectively associated with the ends of the grooved roller 3, have a closed Nutverlauf over the front ends and are referred to here as a closed intersection point 5.1 and 5.5.
  • the crossing points 5.1 and 5.5 represent so-called reversal points, by which the maximum coil width of a coil 12 is determined.
  • the intersection points 5.2, 5.3 and 5.4 are referred to as open intersection points, since the course of the groove sections extends to both sides of the intersection.
  • the grooved roll 3 is coupled to a roll drive 11 which drives the grooved roll 3 at a substantially constant peripheral speed.
  • the grooved roll 3 is at a distance upstream of a guide means 6 for supplying a yarn 2.
  • the guide means 6 has a displaceable yarn guide 7, which determines a yarn discharge point of the yarn 2 for entry into the groove 4 of the grooved roller 3.
  • the yarn guide 7 is coupled to a displacement drive 8, which is controllable via a control unit 9.
  • a coil 12 of the groove roller 3 is followed by a projecting winding spindle 14 which is rotatably supported on a spindle carrier 15.
  • the winding spindle 14 is connected to a spindle drive 16.
  • a winding tube 13 is spanned on the circumference of the winding spindle 14, at the periphery of the thread windings of the coil 12 are placed.
  • the spindle carrier 15 is designed to be movable in order to be able to execute an evasive movement with increasing coil diameter. Alternatively, however, there is also the possibility that the evasive movement takes place by a movably held groove roller.
  • the roller drive 11 and the spindle drive 16 are connected to a control device 10.
  • the control device 10 is also coupled to the control unit 9 of the displacement drive.
  • the guide means 6 is positioned for winding the yarn 2, that at the periphery of the winding tube 13, the Generalaufspulitch 17.1, 17.2, 17.3 and 17.4 result.
  • the yarn guide 7, which determines the yarn discharge point of the yarn 2 to be fed to the groove roller 3, guided on a guide track parallel to the grooved roller in a position which is in each case between two adjacent crossing points of the groove 4.
  • the yarn guide 7 is arranged in the position between the intersections 5.2 and 5.3. In this situation, the thread 2 is wound with short partial strokes to the partial winding 17.2.
  • control programs and algorithms are included, which determine the winding of the thread 2 to the coil 12.
  • a holding time is specified via the control device 10, in which the yarn guide 7 remains in the respective position. Only when the holding time has expired, an activation of the displacement drive 8 via the control unit 9 in a next adjacent position. Thus, for example, after a predetermined winding cycle, each of the positions of the thread guide 7 would be activated several times.
  • the partial discharges 17.1 to 17.4 are wound in succession up to a common final diameter.
  • the individual holding times are preferably in the range of a few seconds. Depending on the yarn speed and the yarn denser, however, larger or smaller holding times can also be achieved.
  • the holding times are twice as large in the positions for winding the partial coils 17.1 and 17.4 at the ends of the coil 12, as the holding times for winding the middle partial windings 17.2 and 17.3.
  • each of the Operaaufspulitch 17.1 to 17.4 can be successively wound with few layers of thread, the winding cycle is repeated until a final diameter of the coil 12 is reached.
  • FIGS. 2 to 4 the sequence of a winding cycle is shown below in FIGS. 2 to 4 in a further exemplary embodiment of the winding device according to the invention.
  • a groove roller 3 is used with a groove 4, which has a total of four crossing points.
  • the entire coil width is indicated in Fig. 2 by the capital letter H.
  • the height of the traversing triangle, which extends between the yarn guide 7 and the axis of the grooved roll 3 is marked with the capital letter C.
  • the yarn guide 7 and the yarn discharge point is shown in different positions during winding of the Operaetzspulonne 17.1, 17.2 and 17.3 of the coil 12.
  • the coil 12 is first wound up between the points 1 and 2 for 2 seconds at the beginning of the coil.
  • the intersections of the groove 4 on the circumference of the groove roller 3 are characterized in this embodiment by the points 1, 2, 3 and 4.
  • the last thread drain point 7 is located in the middle of these two points 1 and 2. In this position, a first Halaufspu- tion 17.1 of the coil 12 is wound.
  • FIG. 5 is an exemplary embodiment of the coil according to the invention is shown in a half section.
  • the coil 12 is held on a winding tube 13.
  • the winding tube 13 has a catch slot 18 at the left end.
  • a thread reserve 22 is wound on the circumference of the winding tube 13.
  • Such a thread reserve can be carried out preferably by moving the thread guide 7 in a simple manner.
  • the coil 12 is formed by the three juxtaposed Operaaufspulonne 17.1, 17.2 and 17.3.
  • the Generalaufspulonne 17.1, 17.2 and 17.3 are wound directly adjacent to the winding tube 13.
  • the distance forming between the partial windings 17.1, 17.2 and 17.3 is essentially dependent on the configuration of the intersection points on the circumference of the groove roller. In this embodiment, the distance is exemplified.
  • the distance between the Generalaufspulonne 17.1, 17.2 and 17.3 is in the range of a few millimeters, so that he short thread pieces are generated at the transition between the Generalaufspulonne.
  • the coil 12 shown in Fig. 5 is shown in a half-finished state. In this state, the Generalillerspulung 17.3 is wound within a winding cycle to continue the Operaaufspulung 17.2 in the next step.
  • the final diameter of the coil 12 at each of the Align sub-packages 17.1, 17.2 and 17.3 evenly.
  • FIG. 6 a further embodiment of a winding device according to the invention is shown schematically in a partial view.
  • the embodiment is suitable for winding a plurality of threads.
  • only two winding stations 23.1 and 23.2 of the winding device are shown.
  • the structure of the winding device is substantially identical to the embodiment of FIG. 1, so that only the differences are explained below.
  • the traversing device 1 is likewise formed by a groove roller 3.
  • the groove roller 3 extends over several winding units.
  • an endless groove 4 is introduced with a plurality of crossing points.
  • the groove roller 3 is driven by a roller drive 11.
  • a guide means 6 upstream with a plurality of yarn guides 7.
  • One thread guide is provided per winding unit.
  • the yarn guides 7 are arranged on a guide rod 21 which extends parallel to the groove roller 4.
  • the guide rod 21 is coupled to the synchronous adjustment of the yarn guide 7 with a displacement drive 8.
  • the displacement drive 8 is formed in this embodiment by an adjusting gear 20 and a stepping motor 19.
  • the stepper motor 19 is coupled to the control unit 9.
  • the winding spindle 14 is held long projecting on the spindle carrier 15.
  • the winding spindle 14 is driven by the spindle drive 16.
  • each of the winding units 23.1 and 23.2 a coil 12 is wound with a total of three Operaaufspulonne 17.1, 17.2 and 17.3.
  • the threads 2 can be wound parallel to each other according to the embodiment of Figures 2 to 4 to the Generalaufspulonne 17.1 to 17.3.
  • the Doppelhubwar can be increased arbitrarily, because apart from the thread no further masses must be moved. After the holding times of 2 or 4 seconds listed in the exemplary embodiment according to FIGS. 2 to 4, a shifting of the last thread discharge point is necessary. At the travel speed and acceleration no high demands are made; they are technically feasible. It can also continue to be driven with overfeed, so that with the peripheral speed of the grooved roller, the thread tension on the coil and thus their hardness can be regulated. Self-threading is still possible. By any juxtaposition of corresponding partial strokes and almost all required total strokes can be realized.

Landscapes

  • Winding Filamentary Materials (AREA)

Abstract

L'invention concerne un dispositif de bobinage et un procédé de bobinage d'un fil (2) sous forme de bobine (12). Le changement de fil est réalisé au moyen d'un dispositif de changement (1) comportant un cylindre rainuré (3) pourvu d'une rainure (4) s'étendant sur la périphérie, présentant plusieurs points d'intersection (5.1, 5.5). Pour le guidage du fil dans un point de départ (7), pour l'insertion dans la rainure du cylindre rainuré, un élément de guidage (6) est prévu en aval du cylindre rainuré. L'élément de guidage est conçu de façon mobile et peut être guidé alternativement dans plusieurs positions de telle manière que le point de départ du fil pour l'insertion du fil dans la rainure du cylindre rainuré, est situé respectivement entre des points d'intersection adjacents. De ce fait, le fil est changé en plusieurs levées partielles (17.1-17.4), respectivement entre les points d'intersection, et bobiné sous forme de bobinages partiels de telle manière que la bobine est formée par plusieurs bobinages partiels adjacents.
PCT/EP2008/051520 2007-02-14 2008-02-07 Dispositif de bobinage Ceased WO2008098873A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008000259T DE112008000259A5 (de) 2007-02-14 2008-02-07 Aufspuleinrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710007245 DE102007007245A1 (de) 2007-02-14 2007-02-14 Aufspuleinrichtung
DE102007007245.9 2007-02-14

Publications (1)

Publication Number Publication Date
WO2008098873A1 true WO2008098873A1 (fr) 2008-08-21

Family

ID=39513805

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/051520 Ceased WO2008098873A1 (fr) 2007-02-14 2008-02-07 Dispositif de bobinage

Country Status (2)

Country Link
DE (2) DE102007007245A1 (fr)
WO (1) WO2008098873A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101786338B (zh) * 2009-12-28 2012-12-26 苏州工业园区瑞来福工厂维修服务有限公司 一种放线轮的滑动缓冲机构
CN107354525A (zh) * 2017-08-29 2017-11-17 海安县嘉禾化纤有限公司 纺丝机卷绕装置
CN115448102A (zh) * 2022-10-24 2022-12-09 江西小山新材料科技有限公司 一种高温无铅焊锡丝制备设备及其方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105600594B (zh) * 2015-12-28 2018-07-27 江阴市长泾花园毛纺织有限公司 高速络筒机导丝凸轮

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR865347A (fr) * 1940-02-10 1941-05-20 Abbott Machine Co Perfectionnements au bobinage de fil
DE1233112B (de) * 1958-12-23 1967-01-26 Pittsburgh Plate Glass Co Verfahren zum Aufwickeln von Glasfasern in Form eines Stranges von Glasfaeden
CH544717A (de) * 1971-11-12 1974-01-15 Mettler Soehne Maschf Garnspule, Verfahren zu deren Herstellung und Vorrichtung zur Durchführung des Verfahrens
US3945581A (en) * 1970-08-14 1976-03-23 Barmag Barmer Maschinenfabrik Aktiengesellschaft High-speed cross-winding device
DE3901278A1 (de) * 1988-11-23 1990-05-31 Schlafhorst & Co W Vorrichtung zum herstellen einer kreuzspule
DE4009370A1 (de) * 1990-03-23 1991-09-26 Gregor Gebald Verfahren zum herstellen einer kreuzspule und danach hergestellte kreuzspule

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR865347A (fr) * 1940-02-10 1941-05-20 Abbott Machine Co Perfectionnements au bobinage de fil
DE1233112B (de) * 1958-12-23 1967-01-26 Pittsburgh Plate Glass Co Verfahren zum Aufwickeln von Glasfasern in Form eines Stranges von Glasfaeden
US3945581A (en) * 1970-08-14 1976-03-23 Barmag Barmer Maschinenfabrik Aktiengesellschaft High-speed cross-winding device
CH544717A (de) * 1971-11-12 1974-01-15 Mettler Soehne Maschf Garnspule, Verfahren zu deren Herstellung und Vorrichtung zur Durchführung des Verfahrens
DE3901278A1 (de) * 1988-11-23 1990-05-31 Schlafhorst & Co W Vorrichtung zum herstellen einer kreuzspule
DE4009370A1 (de) * 1990-03-23 1991-09-26 Gregor Gebald Verfahren zum herstellen einer kreuzspule und danach hergestellte kreuzspule

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101786338B (zh) * 2009-12-28 2012-12-26 苏州工业园区瑞来福工厂维修服务有限公司 一种放线轮的滑动缓冲机构
CN107354525A (zh) * 2017-08-29 2017-11-17 海安县嘉禾化纤有限公司 纺丝机卷绕装置
CN115448102A (zh) * 2022-10-24 2022-12-09 江西小山新材料科技有限公司 一种高温无铅焊锡丝制备设备及其方法

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Publication number Publication date
DE102007007245A1 (de) 2008-08-28
DE112008000259A5 (de) 2010-01-07

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