EP0085108A1 - Method of driving heald frame for negative dobby machine, negative cam machine - Google Patents
Method of driving heald frame for negative dobby machine, negative cam machine Download PDFInfo
- Publication number
- EP0085108A1 EP0085108A1 EP82900146A EP82900146A EP0085108A1 EP 0085108 A1 EP0085108 A1 EP 0085108A1 EP 82900146 A EP82900146 A EP 82900146A EP 82900146 A EP82900146 A EP 82900146A EP 0085108 A1 EP0085108 A1 EP 0085108A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heald frame
- negative
- tension
- machine
- heald
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C13/00—Shedding mechanisms not otherwise provided for
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C1/00—Dobbies
Definitions
- This invention relates to driving method for moving a heald frame up and down in negative dobby machines or negative cam machines installed to looms.
- heald frame driving method is performed by raising the heald frame using tension of the rope and depressing it using spring restoring force.
- this driving method for example, when spun yarn fabric is woven in refined clothing fashion, if tension of downward warp is made larger than that of upward warp, spring tension must be increased. Since the heald frame is raised against the above mentioned spring tension, large strength acts on the rope and on the negative dobby machine body or the negative cam machine body, thereby abrasion is accelerated in such part and power is lost.
- the spring and members relating to this are disposed below the heald frame, treatment is inconvenient and workability is not favorable.
- This invention is characterized in heald frame driving method when resilient transmission member such as rope connected to a shedding lever of negative dobby machines or cam machines i; disposed above a heald frame, wherein the resilient transmission member is engaged with the heald frame through a working lever, a connecting rod or the like, driving is effected so that the heald frame is moved downwards by tension of the resilient transmission member and upwards by restoring force of a spring, and the operating lever, connecting rod, spring and the like are arranged at lateral side or upper side of the heald frame.
- resilient transmission member such as rope connected to a shedding lever of negative dobby machines or cam machines i; disposed above a heald frame, wherein the resilient transmission member is engaged with the heald frame through a working lever, a connecting rod or the like, driving is effected so that the heald frame is moved downwards by tension of the resilient transmission member and upwards by restoring force of a spring, and the operating lever, connecting rod, spring and the like are arranged at lateral side or upper side
- An object of this invention is to provide heald frame driving method wherein spring tension acting on a heald frame is small when tension of downward warp is less than that of upward warp, and abrasion is small at resilient transmission member at working member such as negative dobby machine body or cam machice body.
- Another object of this invention is to provide heald frame driving method, wherein the working lever, connecting rod and spring to engage the resilient transmission member with the heald frame are arranged at lateral side or upper side of the heald frame, and treatment and adjustment are easy.
- Still another object of this invention is to provide heald frame driving method wherein power loss is small.
- Fig. 1 is a schematic front view of an embodiment of tnis invention.
- Fig. 1 shows an Embodiment of method according to this invention.
- a negative dobby machine body 2 is mounted on the right end of upper surface of a top beam 1 of a loom, and a plurality of heald frames 11, which correspond to a plurality of shedding levers (not shown) of the negative dobby machine body 2 and have the same number as that of the shedding levers, are arranged in longitudinal direction.
- One shedding lever is connected to two ropes 3a, 3b for one heald frame 11 corresponding thereto.
- the top beam 1 of the loom is provided with pins projecting on leftward and rightward portions from the center of the beam, and a plurality of guide pulleys 15a, 15b corresponding to the heald frames 11 are rotatably supported by respective pins.
- Shafts 10 project respectively on both side frames 9a, 9b of the loom at sideward portion of the heald frames 11, and a plurality of working levers 4a and 4b are pivotally supported respectively by the shafts 10 corresponding to each heald frame 11.
- the working levers 4a and 4b are formed in lateral symmetry and provided with sector portions 5a, 5b on upper side, connecting portions 6a, 6b on inner side, and arms 7a, 7b on outer side, the rope 3a guided by the guide pulley 15a is connected to the sector portion 5a;the rope 3b guided by the guide pulley 15b is connected to the sector portion 5b.
- Connecting rods8, 8 are joined with pins respectively to the connecting portions 6a, 6b, and each of the connecting rods 8, 8 stands upright and the bottom and thereof is pivotally connected to the heald frame 11.
- Hooks 12, 12 are joined with pins respectively to outer ends of the arms 7a, 7b, and brackets 14a, 14b are installed below the arns 7a, 7b in opposing relation thereto.
- the brackets 14a, 14b are attached to the side frames 9a, 9b, and two tension coil springs 13 are stretched between the hooks 12, 12 and the brackets 14a, l4b respectively.
- tension coil spring 13 in the above mentioned embodiment may be replaced by another tension coil spring connecting the heald frame 11 with the top beam 1.
Abstract
Description
- This invention relates to driving method for moving a heald frame up and down in negative dobby machines or negative cam machines installed to looms.
- In prior art, when resilient transmission member such as ropes connected to a shedding lever of negative dobby machines or cam machines is disposed above a heald frame, heald frame driving method is performed by raising the heald frame using tension of the rope and depressing it using spring restoring force. In this driving method, however, for example, when spun yarn fabric is woven in refined clothing fashion, if tension of downward warp is made larger than that of upward warp, spring tension must be increased. Since the heald frame is raised against the above mentioned spring tension, large strength acts on the rope and on the negative dobby machine body or the negative cam machine body, thereby abrasion is accelerated in such part and power is lost. Moreover, since the spring and members relating to this are disposed below the heald frame, treatment is inconvenient and workability is not favorable.
- This invention is characterized in heald frame driving method when resilient transmission member such as rope connected to a shedding lever of negative dobby machines or cam machines i; disposed above a heald frame, wherein the resilient transmission member is engaged with the heald frame through a working lever, a connecting rod or the like, driving is effected so that the heald frame is moved downwards by tension of the resilient transmission member and upwards by restoring force of a spring, and the operating lever, connecting rod, spring and the like are arranged at lateral side or upper side of the heald frame.
- An object of this invention is to provide heald frame driving method wherein spring tension acting on a heald frame is small when tension of downward warp is less than that of upward warp, and abrasion is small at resilient transmission member at working member such as negative dobby machine body or cam machice body.
- Another object of this invention is to provide heald frame driving method, wherein the working lever, connecting rod and spring to engage the resilient transmission member with the heald frame are arranged at lateral side or upper side of the heald frame, and treatment and adjustment are easy.
- Still another object of this invention is to provide heald frame driving method wherein power loss is small.
- Above mentioned and other objects and features of this invention will be apparent from the following description referring to the accompanying drawings.
- Fig. 1 is a schematic front view of an embodiment of tnis invention.
- Fig. 1 shows an Embodiment of method according to this invention. In the figure, a negative dobby machine body 2 is mounted on the right end of upper surface of a top beam 1 of a loom, and a plurality of heald frames 11, which correspond to a plurality of shedding levers (not shown) of the negative dobby machine body 2 and have the same number as that of the shedding levers, are arranged in longitudinal direction. One shedding lever is connected to two
ropes - The top beam 1 of the loom is provided with pins projecting on leftward and rightward portions from the center of the beam, and a plurality of
guide pulleys side frames sector portions portions 6a, 6b on inner side, andarms 7a, 7b on outer side, therope 3a guided by theguide pulley 15a is connected to thesector portion 5a;therope 3b guided by theguide pulley 15b is connected to thesector portion 5b. - Connecting rods8, 8 are joined with pins respectively to the connecting
portions 6a, 6b, and each of the connecting rods 8, 8 stands upright and the bottom and thereof is pivotally connected to the heald frame 11. -
Hooks arms 7a, 7b, andbrackets arns 7a, 7b in opposing relation thereto. - The
brackets side frames tension coil springs 13 are stretched between thehooks brackets 14a, l4b respectively. - In the negative dobby machine as above constituted, when the shedding lever (not shown) of the negative dobby machine body 2 oscillates and the
ropes coil spring 13 and the right working lever 4b rotates in counterclockwise direction, thereby the heald frame 11 is moved downwards through the connecting rods 8, 8, When the shedding lever is restored, both working levers 4a, 4b are also restored by means of restoring force of thecoil spring 13, thereby the heald frame is moved upwards. Since longitudinal position on upper side of the heald frame 11 is defined by the connecting rods 8, the heald frame 11 is provided with a guide member (not shown) only at lower side thereof. In order to refine clothing fashion in spun yarn fabric, distance from shedding neutral position (i.e position where wprp is displaced neither upwards nor downwards by means of the heald) to downward war:. position is set larger than that to upward warp position. Accordingly, tension in downward warp is larger than that in upward warp therefore thetension coil spring 13 with less tension may be used there. - As a result, force applied to the rope or the negative dobby machine body 2 in order to drive the heald frame 11 against the spring tension becomes small.
- Although above mentioned embodiment is described regarding a negative dobby machine, similar function is obtained when the negative dobby machine body 2 is replaced by a negative cam machine body in the above mentioned embodiment.
- Moreover, the
tension coil spring 13 in the above mentioned embodiment may be replaced by another tension coil spring connecting the heald frame 11 with the top beam 1.
Claims (1)
- Heald frame driving method in negative dobby machines or cam machines, wherein resilient transmission member such as ropes connected to a shedding lever of negative dobby machines or cam machines is disposed above a heald frame which is driven, characterized in that the heald frame is connected to the r. sillent transmission member through a working lever, a connecting rod and the like which are arranged at lateral side or upper side of the heald frame, and driving is effected so that the heald frame is moved downwards by pulling the resilient transmission member using the shedding lever and it is moved upwards by a spring arranged at lateral side or upper side of the heald frame when the shedding lever is restored.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP185222/80 | 1980-12-27 | ||
JP55185222A JPS6030767B2 (en) | 1980-12-27 | 1980-12-27 | Heald frame drive device for passive dobby machines and passive cam machines |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0085108A1 true EP0085108A1 (en) | 1983-08-10 |
EP0085108A4 EP0085108A4 (en) | 1985-09-02 |
EP0085108B1 EP0085108B1 (en) | 1989-03-15 |
Family
ID=16167008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82900146A Expired EP0085108B1 (en) | 1980-12-27 | 1981-12-26 | Method of driving heald frame for negative dobby machine, negative cam machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0085108B1 (en) |
JP (1) | JPS6030767B2 (en) |
DE (1) | DE3177009D1 (en) |
WO (1) | WO1982002217A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102260947A (en) * | 2010-05-24 | 2011-11-30 | 株式会社丰田自动织机 | Shedding device in a loom |
CN104005141A (en) * | 2014-06-13 | 2014-08-27 | 丹阳市锦典丝绸工艺品织造有限公司 | Upper-layer heald frame shaft raising device of multi-arm hydraulic loom |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59163441A (en) * | 1983-02-28 | 1984-09-14 | 村田機械株式会社 | Heald frame lifting apparatus |
JPS60246840A (en) * | 1984-05-17 | 1985-12-06 | 村田機械株式会社 | Warp yarn opening apparatus of loom |
JPS6430374U (en) * | 1988-07-22 | 1989-02-23 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2022063A1 (en) * | 1969-06-13 | 1971-02-11 | Staeubli Geb & Co | Hanging device for a loom shaft |
EP0066655A1 (en) * | 1981-06-01 | 1982-12-15 | N.V. Weefautomaten Picanol | Frame-driving unit for weaving looms |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5250311A (en) * | 1975-10-21 | 1977-04-22 | Nippon Musical Instruments Mfg | Manufacture of carbon or carbide plates |
FR2423569A1 (en) * | 1978-04-18 | 1979-11-16 | Staubli Sa Ets | IMPROVEMENTS TO CABLE MECHANISMS FOR ORDERING HALF FRAMES FOR WASTING TRADE |
-
1980
- 1980-12-27 JP JP55185222A patent/JPS6030767B2/en not_active Expired
-
1981
- 1981-12-26 EP EP82900146A patent/EP0085108B1/en not_active Expired
- 1981-12-26 DE DE8282900146T patent/DE3177009D1/en not_active Expired
- 1981-12-26 WO PCT/JP1981/000418 patent/WO1982002217A1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2022063A1 (en) * | 1969-06-13 | 1971-02-11 | Staeubli Geb & Co | Hanging device for a loom shaft |
EP0066655A1 (en) * | 1981-06-01 | 1982-12-15 | N.V. Weefautomaten Picanol | Frame-driving unit for weaving looms |
Non-Patent Citations (1)
Title |
---|
See also references of WO8202217A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102260947A (en) * | 2010-05-24 | 2011-11-30 | 株式会社丰田自动织机 | Shedding device in a loom |
CN102260947B (en) * | 2010-05-24 | 2013-10-16 | 株式会社丰田自动织机 | Shedding device in a loom |
CN104005141A (en) * | 2014-06-13 | 2014-08-27 | 丹阳市锦典丝绸工艺品织造有限公司 | Upper-layer heald frame shaft raising device of multi-arm hydraulic loom |
CN104005141B (en) * | 2014-06-13 | 2015-07-22 | 丹阳市锦典丝绸工艺品织造有限公司 | Upper-layer heald frame shaft raising device of multi-arm hydraulic loom |
Also Published As
Publication number | Publication date |
---|---|
EP0085108B1 (en) | 1989-03-15 |
DE3177009D1 (en) | 1989-04-20 |
EP0085108A4 (en) | 1985-09-02 |
JPS57112430A (en) | 1982-07-13 |
JPS6030767B2 (en) | 1985-07-18 |
WO1982002217A1 (en) | 1982-07-08 |
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