EP1055629B1 - Yarn supply system - Google Patents

Description

The invention relates to a thread delivery system specified in the preamble of claim 1 Art.

In the yarn delivery system known from WO94 / 19861 (PCT / EP94 / 00418), the in a power supply unit housed on the column of the delivery device stand attached outside. A cable loop leads to the respective delivery device. The The outer dimensions of the column are chosen so that the load-bearing capacity for the Stand attachable delivery devices and the power supply unit guaranteed is. The power supply unit is compact, but that of such yarn delivery systems exposed to the inevitable amount of fluff without protection. She also poses a bulky component of the thread delivery system, with the most unhindered Access and access to the delivery equipment and stand is desirable

Conventional technology in such yarn delivery systems is the power supply unit, that build relatively large due to powerful transformer components and can be difficult to park directly on the floor with the stand and with the delivery devices to connect via cable harnesses. This gives access to the stand and the Limited delivery devices and interfere with the wiring harness when working on the thread delivery system.

The invention has for its object a thread delivery system of the aforementioned To create a way in which the power supply unit is better against external influences is protected and the access to the stand is as little as possible bothers.

The object is achieved with the features of claim 1.

The interior of the column is used to house the power supply unit, so that it remains largely protected against pollution and access respectively Access to the stand is unhindered from all sides. It results is a compact design of the stand that the power supply unit optically conceals, with short connection distances to the delivery devices.

The cross-section of the column can be deliberately enlarged to be there (especially in the foot section) to create the accommodation space for the power supply unit. disturbing the above components are avoided. Due to the enlarged cross section of the The column is stable. This enlarged cross-sectional area could at the same time form the foot part or part of it.

The column is expediently a hollow profile closed in the circumferential direction approximately the same cross-section throughout. This has manufacturing advantages.

Alternatively, the column could be a hollow profile with an open at least in some areas Be side. The power supply unit is used in this area.

It is particularly expedient as an extruded hollow profile made of light metal or a light alloy. This saves weight, increases the stability of the Stand. Such profiles are commercially available and inexpensive.

In order to distribute and effectively dissipate heat given off by the power supply unit, it is favorable to provide cooling fins on the column at least on the outside.

The power supply unit is expedient in a side cutout of the column salvaged, which cutout by at least one cover is covered.

In addition to its function, the column can support the support arms and the power supply unit to be included in the structural part of the wiring, which is different from the power supply unit extends to the delivery devices. For this purpose are on the column and / or on the cover cover electrical connection connectors or Cable openings are provided. You only need to lay short sections of cable to be cleaned up, or just the cables of the delivery devices to the Connection connectors to be connected, for example plugged in. The pillar, or even the stand, can be prepared accordingly by the manufacturer, whereby the set-up time of the thread delivery system can be shortened.

It is even conceivable to lay cables from the inside of the column into the inside of the support arms and connections or passages only to have in the support arms.

Furthermore, it is convenient to accommodate a passive or active column To use node structure for data and / or signal transmission. If the pillar and / or the support arms then corresponding connection connectors, connection points or have passages for cables for data and / or signal transmission the set-up times of such computerized thread delivery systems are reduced.

The column can also accommodate a compressed air source or a compressed air supply line be used inside because of the without this to accommodate the power supply unit enlarged cross-section of the column enough Offers space for such auxiliary facilities. With modern thread delivery systems namely that compressed air is frequently required for auxiliary functions on the thread delivery devices. To the individual connection of the delivery devices to the compressed air source and / or the compressed air supply line can have suitable compressed air connections on the column and / or on the support arms be provided.

It is particularly advantageous to make the power supply unit as compact as possible and train using modern technology so that the power supply unit can also be accommodated in a relatively slim column. With a power supply unit, which is a chopper power supply of the switch-mode design for constant maintenance the DC output voltage for the drive motor, the drive motor control circuit and, if necessary, the duty cycle of the sensors of the respective delivery device that can be changed contains, a small and relatively light transformer can be used and the housing dimensions become inexpensively compact. For example, the housing needs such a power supply unit only has a volume of a few cubic decimeters to claim. The essence of the invention is the power supply unit fully integrated into the stand so that it is no longer a separate equipment component can be seen.

Because the column is enlarged due to the cross section for the power supply unit offers enough accommodation space, a cooling fan can be implemented in the column to effectively dissipate the resulting operating heat.

The support arms can be attached to the outside of the stable column, or even the column Push through in the transverse direction. This simplifies the assembly of the support arms and leads to a rigid stand. The column expediently has a round or square one Cross section with an inside diameter or inside length of at least 100 mm.

Fig. 1

eine Seitenansicht, teilweise im Schnitt, eines Fadenliefersystems,

Fig. 2

einen schematischen Querschnitt in der Schnittebene II-II von Figur 1,

Fig. 3

eine schematische Seitenansicht einer anderen Ausführungsform eines Fadenliefersystems, und

Fig. 4

ein Blockschaltbild einer kompakten Stromversorgungs-Einheit.

Embodiments of the subject matter of the invention are explained with the aid of the drawing. Show it:

Fig. 1

a side view, partly in section, of a thread delivery system,

Fig. 2

2 shows a schematic cross section in the sectional plane II-II of FIG. 1,

Fig. 3

is a schematic side view of another embodiment of a yarn delivery system, and

Fig. 4

a block diagram of a compact power supply unit.

A yarn delivery system Y in FIGS. 1 and 2 has a delivery device stand S. (Feeder Stand) on, with the thread delivery device F and at least one power supply unit P on a thread processing textile machine (not shown) such as a weaving machine, be positioned in their operational positions. The stand S has one Foot part 1, for example with floor wheels, at least one essentially vertical Pillar A and, for example, several support arms T carried by pillar A. The for Supply of the textile machine, not shown, require thread delivery devices F. fixed at freely selectable positions on the support arms and for example via cables 10, 11 connected to the power supply unit P. Via the cables 10, 11 each thread delivery device F, for example, with the drive current for an electrical Drive motor, with a DC voltage for a control circuit or with data, Information or signals supplied. Also a return of signals, data or Information in a networked, computerized thread delivery system, for example with a data bus can be useful.

The column A is hollow and at least in some areas with such an enlarged internal cross section formed that the at least one power supply unit P inside the column A can be arranged. In the embodiment of FIGS. 1 and 2 the power supply unit P has a box-like housing 8 which, in addition to electrical, magnetic and electronic components (not shown) for production the drive current and the control current, which from the provided via a cable 5 AC power is derived. The cable 5 and possibly one for data transmission provided cable 6 lead from the lower end of the column A inside to the power supply unit P. The housing 8 of the power supply unit P is either from Installed above or below in the column A, which is closed on all sides, or more appropriately through at least one lateral opening 24, which is covered by a closure cover 25 can be. The closure cover 25 is expediently designed and stipulated that he stiffened the structure of the column A interrupted by the cutout 24.

In the embodiment of Figure 1, electrical connection connectors are on the column or passages 2, 4 are provided, and / or on the closure cover 25, which are to be passed through or connecting the cables 10, 11 can be used. On the housing 8 of the power supply unit P switches, display devices 9 and the like can be provided be accessible through a cutout 26 of the closure cover 25 are. Furthermore, in the embodiment in FIG. 1 there is a node structure in the housing 8 7B of a data or signal transmission system (network or data bus device) incorporated, to which the thread delivery devices F are connected.

In Figures 1 and 2, the column A consists of a hollow profile 22, optionally with the recess 24, the inner cross section of which is dimensioned so large that the housing 8 of the power supply unit P takes place and for example with fasteners 28 can be determined. Advantageously, at least on the outside of the Hollow profile 22 cooling fins 23 formed. In Figure 2 are electrical connection connectors 2 shown on the closure cover 25. The cables 10, 11 optionally connect. These connectors could also be provided directly on the housing 8 and accessible through passages in the hollow profile 22 and / or the closure cover 25 his. Switching or display devices 30 are accessible through the recess 26. The support arms T could with fasteners 29 on one side of the Hollow profile 22 may be attached. But it is also conceivable that the support arms (dashed) that Let hollow profile 22 push through. To avoid exposed wiring harnesses, could. Connection connectors or passages 2 distributed in the support arms T. provided and via interconnections 27 with the power supply unit P be connected.

The power supply unit P is expediently a compact unit with a Volume of only a few cubic decimeters, their compact size through use electronic chopper devices instead of heavy duty transformers are possible. Such a compact power supply unit P will be described later of Figure 4 explained.

The power supply unit can (as in Figure 1) at the height of the support arms T in the Pillar A are arranged, or deeper just above the foot section 1 to ensure stability of the stand S to improve. It is important that the power supply unit P is protected inside the column and not in the work area on the stand S has the above components, and that possibly also the wiring is predominantly housed in pillar A.

The hollow profile 22 expediently consists of continuously extruded aluminum or a light metal alloy and has, for example, rectangular or square Cross section with an inner side length of at least 100 mm.

In the yarn delivery system Y in Figure 3, the power supply unit P is inside the Pillar A of the stand S is mounted with fastening devices 28, if necessary, that it leaves a gap to the inner wall. Elsewhere is inside the pillar the node structure B, 7 of the data or signal transmission system as a separate unit arranged. Furthermore, inside the column A is a compressed air supply line or a compressed air source 34 is provided. Finally, at least one cooling fan can also be used 33 be housed inside the column A, which is used to cool the heat-emitting during operation Components. Air inlet and air outlet openings are expedient 31, 32 provided with a cover grille or filters in order in spite of a cooling air flow inside the column A soiling and inevitable fluff accumulation on To prevent entry.

The electrical connection connectors or passages 2, 4 are for example in the Side walls of the column A positioned and connected to the power supply unit P. Connections to nodes accessible from the outside can also be made from the node structure B, 7 Connection connectors 36 may be provided. From the compressed air source respectively corresponding compressed air connections 35 are the compressed air supply line 34 also arranged on the outside of column A, with control and expediently Valve devices 37 are housed inside the pillar A.

The embodiments shown have in common the use of column A of Stand S as a functional supply component of the yarn delivery system Y that at least the power supply unit P is positioned inside the column and on the column or in the recess of the column cable glands or connection connectors are provided, which selectively connect the to be positioned on the stand Enable thread delivery devices.

The cross section of column A, which is a supply component in the thread delivery system Y is to form, compared to conventional, has only a supporting function Columns significantly enlarged. However, it is convenient to use the power supply unit to be as compact as possible or relatively elongated and slim. Therefore, according to claim 4, a power supply unit P is preferred uses a chopper power supply Z of the switch-mode type with constant maintenance the DC output voltage for a drive motor M of the respective thread delivery device F for a control circuit C and possibly for sensors D of the thread delivery device F contains variable duty cycle. By using this powerful and modern electronic and electrical components can Power supply unit P has a weight of approximately 1 KG and a volume of only approximately Have 2 to 3 liters. This makes it possible to place the power supply unit P in the column A. easy to install. The chopper power supply Z is connected to the cable 5, the leads to the AC network or to a connection of the associated, not shown Textile machine. The chopper power supply unit Z has at least one DC voltage output, to which the cable 10 is connected. In addition, others can DC voltage outputs can be provided, to which the cables 11, 12 are connected are, for example for the control circuit C or the sensors D.

In the chopper power supply unit Z there is a rectifier section 13 with a filter on the input side intended. Behind it is a high-frequency chopper inverter section 14 and a transformer 15. The transformer 15 is followed by a further rectifier section 16 with a filter 21 which leads to output interfaces 3. A feedback loop 17 extends with a pulse width modulation element 19 within a circle 18 to the high frequency chopper inverter section 14. The sampling ratio of the inverter 14 can be changed so that the DC voltages for the drive motor M, the control circuit C or the sensors D are extremely stable. Section 14 contains at least one power transistor and a high frequency one Switches (MOSFET or BIPOLAR). The pulse width modulation element 19 can be via a Oscillator clocked and controlled with an amplifier stage and a reference voltage to vary the duty cycle. In section 14 is the DC level at high frequency (20 to 200 kHz or more) chopped, im Transformer 15 transformed, rectified and filtered in rectifier section 16, so that there is a very uniform DC voltage on the desired one Tension level results. The chopper power supply Z can cover an AC voltage range process between 200 and 600 V. The chopper power supply unit can be expediently Z switch between several work areas, for example three Steps for 2 to 300 V AC, 300 to 450 V AC, and 450 to 600 V AC voltage. This design also results in the power supply unit P emits little heat during operation, has high operational reliability, EMC requirements reliably fulfilled, the use of simple ceramic special fuses and automatic circuit breakers enables and a light and precise to the inner shape of the column A. customizable housing 8 can have.

In the embodiments shown, there is a single power supply unit P in each case inserted into the pillar A inside. It would be conceivable to have several such housings 8, respectively accommodate multiple power units in the same way. Furthermore, the respective stand S is shown with only one column A. For large stands However, several columns A could also be provided, at least of which one is used to hold the power supply unit P, or possibly all Columns with an enlarged cross section to accommodate utilities of the yarn delivery system Y are used.

A conventional, larger-sized power supply unit is also installed in column A. To accommodate P, the pillar A could have a correspondingly large cross-section Bottom part and a slimmer top part (not shown), which then carries the support arms T. In the pedestal or pedestal-like lower part of column A is then the power supply unit P installed. The connecting cables to the thread delivery devices F run upwards in the slimmer part of column A, or even outside column A. This enlarged lower part could even be the foot part of the stand S form.

Claims (16)

1. A thread feeding system (Y) having a feeder unit frame (S) which has a foot part (1), at least one substantially vertical hollow column (A) and, arranged on the column (A), bearer arms (T) for at least one thread feeder unit (F), and having at least one power supply unit (P) which can be connected to the mains, for the at least one feeder unit, characterised in that
   the power supply unit (P) is arranged inside the column (A).
2. A thread feeding system according to Claim 1, characterised in that the column (A) has, at least in the region in which the power supply unit P is accommodated, a cross-section which is enlarged to at least the dimensions of the power supply unit P.
3. A thread feeding system according to Claim 1, characterised in that the column (A) is a hollow profiled section (22) which is closed in the circumferential direction and has a cross-section that remains approximately constant throughout.
4. A thread feeding system according to Claim 1, characterised in that the column (A) is a hollow profiled section with a side (24) which is open at least in certain regions.
5. A thread feeding system according to Claim 1, characterised in that the column (A) is an extruded hollow profiled section (22) of light metal or a light metal alloy.
6. A thread feeding system according to Claim 1, characterised in that the column (A) has, at least on the outside, cooling ribs (23).
7. A thread feeding system according to Claim 1, characterised in that a lateral cutout (24) of the column (A) is covered by at least one closing cover (25).
8. A thread feeding system according to at least one of the preceding claims, characterised in that electrical terminal connectors or cable feedthroughs (2, 4) for cables (10, 11) to and from the feeder units (F) are provided on the column (A) and/or on the closing cover (25).
9. A thread feeding system according to Claim 1, characterised in that cables lying inside the column (A) lead from the power supply unit (B) into the bearer arms (T) and to terminal connectors (2) and/or outlets provided there.
10. A thread feeding system according to Claim 1, characterised in that at least one active or passive node structure (7B) for transmitting data and/or signals from or to the feeder units (F) is provided in the column (A).
11. A thread feeding system according to Claim 10, characterised in that terminal interfaces (36) connected to the node structure (7B) are provided on the column (A) and/or the bearer arms (T) for transmitting data and/or signals.
12. A thread feeding system according to Claim 1, characterised in that a compressed air source (34) or a compressed air supply line, preferably with a control and regulating valve means (37), is arranged inside the column (A), and in that compressed air connection points (35) are mounted on the column (A) and/or on the bearer arms (T).
13. A thread feeding system according to Claim 1, characterised in that the power supply unit (P) is a compact unit which has, in a housing (8), a chopper power pack (Z) of the switch mode construction with a pulse duty factor which is adjustable in order to keep constant the output d.c. voltage for a drive motor (M), a drive motor control circuit (C) and where applicable sensors (D) of a feeder unit (F).
14. A thread feeding system according to Claim 1, characterised in that a cooling fan (33) is contained inside the column (A), and in that air inlet and outlet openings are covered by grids or filters (32, 31).
15. A thread feeding system according to Claim 1, characterised in that the bearer arms (T) are secured to the outside of the column (A) or pass through the column (A) in the transverse direction.
16. A thread feeding system according to Claim 1, characterised in that the column (A) has a rectangular or round cross-section with an internal diameter or an inside length of at least 1 mm.

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