GB2030257A - A device for transmitting oscillatory rotary motion on a textile machine - Google Patents
A device for transmitting oscillatory rotary motion on a textile machine Download PDFInfo
- Publication number
- GB2030257A GB2030257A GB7927629A GB7927629A GB2030257A GB 2030257 A GB2030257 A GB 2030257A GB 7927629 A GB7927629 A GB 7927629A GB 7927629 A GB7927629 A GB 7927629A GB 2030257 A GB2030257 A GB 2030257A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillating
- transmission
- transmission member
- flexible
- rotation
- 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.)
- Withdrawn
Links
- 230000033001 locomotion Effects 0.000 title claims description 14
- 239000004753 textile Substances 0.000 title claims description 8
- 230000003534 oscillatory effect Effects 0.000 title description 4
- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/02—Loop takers, e.g. loopers for chain-stitch sewing machines, e.g. oscillating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/001—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for conveying reciprocating or limited rotary motion
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Looms (AREA)
Abstract
The device has a transmission member 6 which is arranged between two oscillating members 2, 4 and which is stiff in tension and compression in the force transmission direction; the transmission member 6 is flexible at at least one end 8 transversely to its force transmission direction and is fastened by this end 8 rigidly to an oscillating member 10 eccentrically of the axis of rotation. <IMAGE>
Description
SPECIFICATION
A device for transmitting oscillatory motion on a textile machine
This invention relates to a device for transmitting oscillatory rotary motion in a textile machine.
In a known such device a transmission member is connected by way of hinges to the oscillating members. In such a device the disadvantage exists that at high oscillation frequencies, as are more especially necessary in ribbon looms, the hinges are subjected to high wear. As a result of wear of the hinges, not only is the accuracy of the transmission impaired, but this also leads to a high development of noise.
An object of the present invention is to provide a device for transmitting oscillatory rotary motion in a textile machine, which does not have the said disadvantages.
The invention provides a device for transmitting an oscillating rotary motion between at least two oscillating members on a textile machine such as a ribbon loom, comprising a transmission member which is stiff in tension and compression in the direction of transmission of the force, and flexible at at least one end transversely to the direction of transmission of the force and is rigidly fastened by this end to an oscillating member eccentrically to the axis of rotation.
The flexible nature of one end of the transmission member transversely to the direction in which the force is transmitted makes it possible to connect the transmission member rigidly, i.e. securely and in playfree manner to the oscillating member. In this way any deflection of the connection point is prevented, so that on the one hand an exact playfree transmission of the oscillations is possible and on the other hand, noise is reduced. The playfree connection of the transmission member to the oscillating member makes possible high oscillation frequencies and ensures a long useful life.
In addition to this, this design of the device is additionally extremely simple and therewith economical to produce. Moreover, it requires no lubrication and thus virtually no maintenance.
The advantageous properties of the device can already be achieved if one end of the transmission member is flexible and is connected securely to the oscillating member Two or more oscillating members can act on a toothed rack in each case by means of a toothed wheel. It is also possible to provide the transmission member with two toothed racks, the toothings of which are directed away from each other and on which in each case one or more oscillating members can act by means of toothed wheels. In this respect it is always of advantage if the toothing is helical, whereby any play between the toothed wheel and the toothed rack can practically be avoided. Also the transmission member can be connected either in the longitudinal direction one behind the other and/or on opposite sides to several belts.In this respect, two and more oscillating members can be driven with each belt.
Even with one belt a playfree transmission is possible.
The device is suitable for the most varied drives of a textile machine. However, its use in connection with a ribbon loom is particularly advantageous.
The invention will be described in more detail hereinunder, by way of example, with reference to the accompanying drawings, in which:
Fig. 1 shows a first device of the invention having a transmission member having one flexible end and one end provided with a toothed rack;
Fig. 2 shows an oscillating member in a view transversely to its axis of rotation;
Fig. 3 shows a device in accordance with Fig. 1 but having a plurality of oscillating members, in top plan view;
Fig. 4 shows a further device of the invention having with a transmission member having one flexible end and another end connected to a belt;
Fig. 5 is a top plan view of a device in accordance with Fig. 4 but having a plurality of oscillating members;
Fig. 6 shows a further device of the invention having a transmission member having flexible ends; and
Fig. 7 shows a device for driving a weft insertion needle on a ribbon loom.
Fig. 1 shows a device of the invention for transmitting an oscillating rotary motion between an oscillating member 2, which is driven (in a manner not shown) and an oscillating member4 by means of a transmission member 6 which is stiff in tension and compression in the direction in which the force is transmitted. The member 6 has one end 8 which is flexible transversely to its force transmission direction and which is fastened rigidly, for example screwed or rivetted, to an eccentric 10 of the oscillating member 2. The eccentric contains a circumferential surface 12 on which the flexible end 8 of the transmission member rolls during the oscillating motion. The other end 14 of the transmission member 6 carries a toothed rack 16 which meshes with a toothed wheel 18 of the other oscillating member 4.The toothed wheel 18 is seated on a shaft 20 which
is connected to a weft insertion needle 22 of a ribbon loom (not shown in more detail). The transmission member 6 consists, at least in its part containing the flexible end 8, of spring steel, plastics material or of a natural material, such as leather. Plastics material is preferred.
Preferably the toothed rack 16 and the toothed wheel 18 are also of plastics material. The toothed rack and the toothed wheel are advantageously helical-toothed and/or equipped with an adjusting device, for example a pressure roller, in order to reduce or preclude flank play. In the case of this exemplified embodiment, the axes of rotation 24 and 26 of the oscillating members 2 and 4 form an angle of 90" with one another. The oscillating member 2 can pivot through an angle of 30 , which can be
geared by an appropriate gearing of the device into a swivel angle of 1300 in the case of the second oscil
lating member. With such a device 60 oscillations
per second can easily be transmitted.
Fig. 2 shows an eccentric 28 of an oscillating
member whose circumferential surface 34, serving
for the bearing of the flexible end 30 of a transmis
sion member, has a spacing with regard to the axis of rotation 34 with changes from r, to r2. In this way it is possible to modify the transmission of the oscillation. On the assumption of constant rotational speed of the oscillating member, the eccentric 28 transmits the ocillating motion at the circumferential surface 32 in the case of the spacing r2 at a greater speed than in the case of the spacing r,.
Fig. 3 shows a development of the device in accordance with Fig. 1, in which respect arranged on the transmission member 6 are two racks 16, 161, the teeth of which point to opposite sides. Oscillating members 4, 4, 43,43 act on each rack 16, 16, 1 6 by means of pinions 18, 18i, 182,183.
Fig. 4 shows a device which is similar to that of Fig.
1. However, a transmission member 36 is connected, at its end 40 remote from its flexible end 38, to a travelling belt 42, which may for example be a toothed belt, which extends around a return roller 44 and a roller 46 of an oscillating member 48. In this way an absolutely playfree transmission of the oscillating motions from the oscillating member 50 to the oscillating member 48 is possible, in which respect the axes of rotation 52 and 54thereof may be inclined at an angle of, for example, 90 to one another.
Fig. 5 shows a development of the device in accordance with Fig. 4, in which respect a transmission member 36 is connected at opposite sides in each case to a travelling belt 42, 42,. These belts 42, 42, are conducted about return rollers 44, 44, and
about rollers 46, 461, 462 and 463 of oscillating members
50, 50,, 502 and 503. In this way, with one transmission
member 36 four oscillating members 50, SOi, 502 and
503 are driven.
Fig. 6 shows a further device for transmitting oscillating rotary motion between two oscillating members 56 and 58 whose axes of rotation 60 and 62 are inclined at an angle to one another, in the present example 90 . Serving to transmit the oscillating motion is a transmission member 64 which has two flexible ends 66 and 68, which are connected to respective eccentrics 70 and 72 of the oscillating members 56 and 58. The transmission member 64 is connected between the flexible ends 66 and 68, in which respect a rib 74 serves to stiffen the transmission member, so that it is stiff in the force transmission direction. The eccentrics 70 and 72 may be similarly to the eccentrics of Figs. 1 and 2. This device, too, makes possible an absolutely playfree and noisefree transmission of the oscillating motion.This device is, in addition particularly simple in construction.
Fig. 7 shows, in a schematic representation, a drive device for a reed 76 and a weft insertion needle 22 of a ribbon loom (not shown in more detail) in which a device 80 of the kind shown in Fig. 1 is arranged to drive the weft insertion needle 22. This drive device has a main driving shaft 82, which drives a disc 84 having an eccentric pin 86. Hinged to the pin and, pointing in opposite directions, are coupling rods 88 and 90. The coupling rod 88 is hinged to an arm 92 of the oscillating member 2 which is mounted on a shaft 94. The oscillating member 2 has an eccentric 10, to a circumferential surface 12 of which is fastened the flexible end 8 of the transmission member 6. The other end 14 of the transmission member 6 carries the rack 16, which meshes with the pinion 18, which drives the shaft 20 of the other oscillating member 4. Fastened to the shaft 20 is the weft insertion needle 22. The further coupling rod 90, arranged on the eccentric pin 86, is also connected to an arm 96 of a reed 76 which is mounted on a shaft 98.
Claims (11)
1. Adevicefortransmitting an oscillating rotary motion between at least two oscillating members on a textile machine such as ribbon loom, comprising a transmission memberwhich is stiff in tension and compression in the direction of transmission of the force, and flexible at at least one end transversely to the direction of transmission of the force and is rigidly fastened by this end to an oscillating member eccentrically to the axis of rotation.
2. A device as claimed in claim 1, wherein the transmission member is flexible at its other end transversely to its direction of force transmission and is rigidly fastened to the other oscillating member eccentrically of the axis of rotation.
3. A device as claimed in claim 1 or 2, wherein the or each flexible end of the transmission member rests on a circumferential surface of an eccentric which is connected to the respective oscillating member.
4. A device as claimed in claim 3, wherein the circumferential surface has a varying spacing from the axis of rotation.
5. A device as claimed in any claims 1 to 4, wherein at least one rack is fastened to the other end of the transmission member and meshes with a pinion of at least one other oscillating member, the toothing preferably being helical.
6. A device as claimed in any of claims 1 to 4, wherein the other end of the transmission member is connected to at least one travelling belt, conducted about at least one other oscillating member.
7. A device as claimed in any preceding claim, wherein the axes of rotation of the oscillating members are arranged at an angle to one another.
8. A device as claimed in any preceding claim, wherein the transmission member is of plastics material.
9. A device as claimed in any of claims 1 to 8, wherein the oscillating member which is connected to the flexible end of the transmission member is driven.
10. A device as claimed in any preceding claim, wherein the other oscillating member is connected to a weft insertion needle of a ribbon loom.
11. A device for transmitting rotary reciprocal motion in a textile machine, substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH860378A CH633330A5 (en) | 1978-08-14 | 1978-08-14 | DEVICE, ESPECIALLY FOR A BANDWAVING MACHINE, FOR TRANSMITTING AN OSCILLATING ROTATIONAL MOVEMENT, AND USE OF THE DEVICE. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2030257A true GB2030257A (en) | 1980-04-02 |
Family
ID=4342510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7927629A Withdrawn GB2030257A (en) | 1978-08-14 | 1979-08-08 | A device for transmitting oscillatory rotary motion on a textile machine |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH633330A5 (en) |
| DE (1) | DE2930023A1 (en) |
| GB (1) | GB2030257A (en) |
| IT (1) | IT1122397B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3223526C1 (en) * | 1982-06-24 | 1983-11-03 | Holtschmidt Entwicklungen KG, 8900 Augsburg | Timing belt drive |
| CN106592068A (en) * | 2017-01-10 | 2017-04-26 | 约科布·缪勒机械制造(中国)有限公司 | Cam type driving weft needle device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH673038A5 (en) * | 1986-12-04 | 1990-01-31 | Textilma Ag |
-
1978
- 1978-08-14 CH CH860378A patent/CH633330A5/en not_active IP Right Cessation
-
1979
- 1979-07-24 DE DE19792930023 patent/DE2930023A1/en not_active Ceased
- 1979-08-02 IT IT24864/79A patent/IT1122397B/en active
- 1979-08-08 GB GB7927629A patent/GB2030257A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3223526C1 (en) * | 1982-06-24 | 1983-11-03 | Holtschmidt Entwicklungen KG, 8900 Augsburg | Timing belt drive |
| CN106592068A (en) * | 2017-01-10 | 2017-04-26 | 约科布·缪勒机械制造(中国)有限公司 | Cam type driving weft needle device |
Also Published As
| Publication number | Publication date |
|---|---|
| IT7924864A0 (en) | 1979-08-02 |
| DE2930023A1 (en) | 1980-02-28 |
| IT1122397B (en) | 1986-04-23 |
| CH633330A5 (en) | 1982-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |