EP1070163A2 - Drive device for the parting shafts of circular looms - Google Patents
Drive device for the parting shafts of circular loomsInfo
- Publication number
- EP1070163A2 EP1070163A2 EP99936242A EP99936242A EP1070163A2 EP 1070163 A2 EP1070163 A2 EP 1070163A2 EP 99936242 A EP99936242 A EP 99936242A EP 99936242 A EP99936242 A EP 99936242A EP 1070163 A2 EP1070163 A2 EP 1070163A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- drive lever
- drive device
- roller
- shafts
- 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
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D37/00—Circular looms
Definitions
- the invention relates to a drive device for the partial shafts of circular looms, on which the partial shafts are driven in opposite directions in pairs and guided parallel to one another, on which the partial shafts of each pair are assigned lower belt sections, at least one of which is guided by means of a guide roller, and on which the belt sections one
- a pair of partial shafts is assigned a drive lever which swings around a fixed bearing, which is connected to these belt sections via at least one coupling and which has at least one sensing roller for interacting with a globiod curve which is rotatably driven about the vertical axis of the circular loom.
- a drive device of this type is known, inter alia, from US Pat. No. 4,579,149.
- the paired shafts are connected to each other at their upper ends by a band.
- This belt is passed over an upper pulley.
- Lower belt sections are fastened to both lower shafts at the lower end, of which the outer one is guided around a lower guide roller at a distance below the shed.
- the two lower band sections are attached to a radially outward arm of a drive lever by means of a partially flexible coupling.
- the drive lever has its frame-fixed bearing between the plane of movement of the partial shafts and the axis of the machine.
- a feeler roller is rotatably mounted about a radial axis on a second, inwardly directed arm of the drive lever. This tracer roller works together with a globoid curve, which is guided and driven around the vertical axis of the circular knitting machine.
- Such a drive device can be produced quite inexpensively.
- the large forces and the unsatisfactory transmission angles on the globoid curve are problematic.
- the large translations between the globoid curve and the partial shafts and the large increases in the curves on the globoid curve lead to high wear at the necessary speeds. It was usually helped to keep the subject height within limits. However, this also forced the diameter of the coils on the contactors to be limited.
- US Pat. No. 4,821,778 has disclosed a somewhat modified drive device for a pair of shafts on circular looms.
- One of the lower band sections is connected in the region of an elongated run below the shed with a lifting rod which extends in the plane of movement of a partial shaft.
- This lifting rod has a carriage at its lower end.
- the sled carries a feeler roller that engages directly in a cylindrical groove curve. With such a design, the groove curve is less stressed. However, the much greater overall height is disadvantageous. The operation of the machine is significantly more difficult due to the high position of the shed.
- the Austrian patent 371 846 has set itself the goal of reducing the extreme height of the machine. It is proposed here that the entire bands - including the strand sections - be flexibly designed for the up and down movements of the strand eyelets for the purpose of training. With such an arrangement, the overall height of the machine can be reduced, but the quality of the shed formation and the reliability of the guiding of all the warp threads is adversely affected. Such an implementation has not prevailed.
- the cylindrical drive curve for the flexible belts is arranged directly below the compartment level, within the area of the two lower belt guides. The then shorter carriage for guiding the feeler rollers reduces the costs and the size of the masses to be moved.
- the partial shafts are guided and driven in a plane inclined upward and outward at approximately 45 °.
- the opposing partial shafts are connected to an upper band section which is tensioned in the usual way around an upper deflection roller.
- the lower belt sections are guided around a drive wheel. They are permanently connected to the circumference of the drive wheel by a coupling.
- the drive wheel in turn is driven by a second belt transmission.
- the drive wheel has a second drive pulley with a smaller diameter.
- a carriage is guided in an outwardly displaced, vertically guided section of the second belt, which is moved up and down by a cylindrical cam drum.
- the overall height of the machine can also be reduced.
- the height of the drum curve is significantly reduced by the gear ratio provided.
- the compartment used in this context inclined 45 ° outwards and upwards, improves the usability of the machine.
- the conditions for the running of the warp threads and for the running and the size of the shooters in the compartment are made much more favorable.
- the drum curve can have a relatively large diameter. The increases in the curves on the drum curve are flat and lead to good transmission ratios.
- a disadvantage of this design is the somewhat higher outlay for the second belt drive and for guiding the slide with the feeler rollers and the coupling for each pair of shafts.
- the object of the present invention is to provide a drive device of the type mentioned in the introduction, in which the forces on the curve can be kept at a low level, in which the costs for the drive elements are low and which allow a low operating height.
- This drive device is intended to enable a large compartment opening without the warp threads being additionally loaded by spreading elements.
- the object is achieved in a simple manner by the features of claim 1.
- the arrangement of the drive lever predominantly outside of the plane of movement of the inner part shafts of each pair allows an optimal assignment of the coupling to the band sections on the one hand and the feeler roller of the drive lever to the drive curve in the center of the machine.
- the large diameter of the globoid curve allows flat curve increases without the movement necessarily having to be translated. In the event that a translation is desired, no additional gear links are required.
- the size of the compartment opening can be determined in the usual framework solely by the appropriate choice of the dimensions of the elements.
- the overall height of the machine and thus the operating height can be kept at a low level.
- the drive device has few and simple parts.
- the Globiod curve can be produced on modern machine tools with reasonable effort.
- the lifespan of most components is long because extreme loads are basically avoided.
- the lower load also offers opportunities for a further increase in the performance of the working speed of the machine.
- the embodiment according to claim 2 enables relatively flat increases in the globoid curve. It is particularly suitable for an embodiment in which the mass of the drive lever is relatively high.
- the design according to claim 3 is recommended if the masses in the area of the drive lever are relatively small.
- the drive arrangement according to claim 5 allows the moving masses of the drive lever to be minimized.
- the features of claim 6 lead to a high stability of the drive unit with good operability of all drive elements.
- the effective radius of the globoid curve can be increased. This allows the slopes of the globoid curve to be made flat.
- the elements designed in this way are easily accessible for operation and maintenance.
- the embodiment according to claim 7 enables the device to be easily adapted to the conditions of a sloping compartment.
- the independent claim 8 defines a drive device specially designed with an inclined shed which also fulfills the task set out above.
- Claim 9 describes an advantageous embodiment of this drive device according to Claim 8.
- the advantages consist in the use of a globoid curve with a large mean diameter.
- the partial shaft drive shown in Fig. 1 is preferably provided for a circular loom, the shed of which is inclined upwards in the direction of the inner fabric stop edge.
- the warp thread coulters 11, 12 are alternately shifted into the two warp thread levels by means of the partial shafts known per se.
- the shooter 4 is guided through the compartment thus opened in a manner known per se.
- the warp thread sheet 11 is guided through the partial shaft 22, while the warp thread sheet 12 is guided through the eyelets of the strands of the partial shaft 21.
- the partial shafts 21 and 22 are guided at an angle of approximately 45 ° along their movement planes 210 and 220, respectively.
- the size of the specialist stroke should enable the guiding of a contactor 4 with a relatively large coil.
- the partial shafts 21, 22 are connected to one another at their upper end by the upper band section 23. This band section 23 wraps around the deflection roller 3 by 180 °.
- the lower ends of the partial shafts 21, 22 are held and tensioned by the lower band sections 24, 25.
- the lower band section 24 is guided via the guide roller 31 fixed to the frame onto the guide section 56 of the drive lever 5 up to the coupling 52 of the drive lever 5.
- the belt section 25 partially wraps around the guide roller 32 and is guided from there onto the guide section 57 of the drive lever 5.
- This lower band section 25 is held by the coupling 53 on the drive lever 5.
- the drive lever 5 has its bearing 51 between the end sections of the two lower band sections 24, 25. This bearing 51 is fixed to the frame.
- the drive lever 5 is designed as a segment in its upper region. The curved section of the segment forms the guide sections 56, 57 for the two belt sections 24, 25 and is limited at the bottom by the couplings 52 and 53.
- the traction roller bearing 54 is arranged between these couplings 52, 53, preferably detachably mounted.
- This tracer roller bearing 54 carries two tracer rollers 55, which formally enclose the bead of the globoid curve 6 between them.
- This globoid curve 6 extends below the circularly arranged shedding zone and is guided by the globoid cam carrier 60 around the vertical longitudinal axis 98 of the circular weaving machine and driven in rotation synchronously with the shooter drive by a corresponding drive device.
- This arrangement has the advantage that the drive movement of the partial shafts 21, 22 can be realized in a compact height.
- the globoid curve 6 can be arranged on a relatively large, medium radius - based on the vertical machine axis.
- All guide elements for the partial shafts 21, 22 are subject to stable guidance in each phase of their movement. All drive elements are easily accessible from the operator side.
- the size of the moving masses can be approximated to an absolutely necessary minimum with the appropriate design and choice of material.
- the size of the specialist stroke can be designed by simple structural adjustment of the elements so that an optimal functioning of the machine is possible.
- the embodiment according to FIG. 2 differs from the device according to FIG. 1 initially in that the shed 1 ′ to be formed here is aligned in the horizontal plane.
- the warp thread groups 11 'and 12' are moved here by the partial shafts 21 ', 22'.
- the planes of motion 210 ', 220' of the partial shafts 21 ', 22' are oriented essentially vertically.
- the partial shafts 21 ', 22' are connected to one another by the upper band section 23 '.
- This band section 23 ' is guided over the deflection roller 3'.
- the lower band section 24 ' is again guided in the plane of movement 210' by the guide roller 33 and via the guide rollers 36 and 37 outside the drive lever 7 to the guide roller 38, which roughly affects the guide plane 220 '.
- this band section 24 ' is then directed upwards again and is held by the coupling 72 pivotably mounted on the drive lever 7. From this coupling 72, the lower band section 25 'leads past the guide roller 34 to the lower end of the partial shaft 22'.
- the drive lever 7 is guided to swing about the frame-fixed bearing 71.
- This bearing 71 is preferably located between the guide areas of the lower band sections 24 'and 25'.
- the bearing 71 can also be arranged outside the lower band section 24 '. In this case, sufficient space must be available for parts of the drive lever 7 to be able to grip the lower band section 24 'laterally at a free distance.
- the globoid curve 8 is arranged very close to the plane of movement 220 'of the inner partial shaft 22'. The radius of this globoid curve 8 is very large in relation to the vertical axis of the machine. In this way, relatively flat increases in the drive curve 8 are possible.
- the globoid curve 8 is designed here as a groove curve. A single feeler roller 75 of the drive lever 7 preferably engages in this groove curve 8.
- the globoid curve 8 is attached to the globoid cam carrier 80 here. It is guided by this around the vertical machine axis 98 and driven in a manner known per se.
- the advantage of this embodiment is that the moving masses of the drive lever 7 can be significantly reduced.
- the bearings 71 are easily accessible for maintenance purposes.
- the lower band section 24 ' can be guided in the movement plane 210' through the movement range of the drive lever 7.
- the drive lever 7 should be designed such that it has a corresponding recess in the guide region of this band section 24 'and can grip around this band section laterally.
- the guide rollers 33 and 34 would only have securing functions.
- the guide rollers 36 and 37 are omitted and the guide roller 38 fulfills the function of a lower deflection roller. The latter should therefore be given an appropriate diameter.
- the device according to FIG. 3 shows a drive device for the partial shafts 21, 22 of a circular weaving machine with a shed that is inclined inwards and upwards.
- the lower band sections 24 ′′ and 25 ′′ are deflected vertically downward by the guide rollers 31 ′ and 32 ′, guided around the roller 38 ′ and connected to one another in the engagement area of the clutch 92.
- a drive lever 9, which swings about the bearing 91 fixed to the frame, is connected to the clutch 92 via a coupling.
- the feeler roller 95 has its bearing on an upward arm of this drive lever 9. It works with the globoid curve 96, which has its bearing on the curve carrier 97.
- the globoid cam carrier 97 rotates about the vertical machine axis 98.
- This version is particularly suitable for those circular looms in which, starting from the drive means for the partial shafts with a horizontal shed, the inclination of the movement plane 220, 210 of the partial shafts upwards and outwards want to increase the length of the shed in front of the stop edge. In this way, space is created for larger coils in the contactors 4.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19815821 | 1998-04-08 | ||
DE19815821A DE19815821C1 (en) | 1998-04-08 | 1998-04-08 | Drive device for the partial shafts of circular looms |
PCT/DE1999/001343 WO1999051805A2 (en) | 1998-04-08 | 1999-04-03 | Drive device for the parting shafts of circular looms |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1070163A2 true EP1070163A2 (en) | 2001-01-24 |
EP1070163B1 EP1070163B1 (en) | 2002-09-04 |
Family
ID=7864041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99936242A Expired - Lifetime EP1070163B1 (en) | 1998-04-08 | 1999-04-03 | Drive device for the parting shafts of circular looms |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1070163B1 (en) |
AT (1) | ATE223526T1 (en) |
AU (1) | AU5147299A (en) |
DE (1) | DE19815821C1 (en) |
WO (1) | WO1999051805A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101984167A (en) * | 2010-08-06 | 2011-03-09 | 屠洪明 | Heald belt transmission mechanism of high-speed plastic circular weaving machine |
CN103205847B (en) * | 2013-03-11 | 2015-08-05 | 安徽省沙克塑料机械设备有限公司 | Plane small cam circular weaving machine |
EP3431643B1 (en) * | 2017-07-21 | 2020-09-02 | Starlinger & Co Gesellschaft m.b.H. | Circular loom |
CN109371538A (en) * | 2018-12-10 | 2019-02-22 | 温州亿科塑料机械有限公司 | A kind of plastic circular loom |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL35079C (en) * | ||||
GB472943A (en) * | 1935-12-13 | 1937-10-04 | Juan Balsach | Improvements in circular looms |
US2811986A (en) * | 1952-11-28 | 1957-11-05 | Sagem | Loom |
CH601530A5 (en) * | 1975-09-04 | 1978-07-14 | Indupack Ag | |
AT371846B (en) * | 1981-11-25 | 1983-08-10 | Chemiefaser Lenzing Ag | ROUND WEAVING MACHINE |
CH660042A5 (en) * | 1983-07-20 | 1987-03-13 | Huemer Franz Xaver | ROUND WEAVING MACHINE. |
AT387797B (en) * | 1985-11-26 | 1989-03-10 | Huang Ching Long | Weft thread monitor for a circular weaving machine |
AT385783B (en) * | 1986-07-14 | 1988-05-10 | Chemiefaser Lenzing Ag | ROUND WEAVING MACHINE |
-
1998
- 1998-04-08 DE DE19815821A patent/DE19815821C1/en not_active Expired - Fee Related
-
1999
- 1999-04-03 AU AU51472/99A patent/AU5147299A/en not_active Abandoned
- 1999-04-03 WO PCT/DE1999/001343 patent/WO1999051805A2/en active IP Right Grant
- 1999-04-03 AT AT99936242T patent/ATE223526T1/en not_active IP Right Cessation
- 1999-04-03 EP EP99936242A patent/EP1070163B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9951805A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO1999051805A3 (en) | 1999-12-16 |
AU5147299A (en) | 1999-10-25 |
ATE223526T1 (en) | 2002-09-15 |
WO1999051805A2 (en) | 1999-10-14 |
EP1070163B1 (en) | 2002-09-04 |
DE19815821C1 (en) | 1999-12-02 |
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