EP0477734A1 - Mécanisme électopneumatique de formation de la foule en particulier pour machines à assembler les extrémités d'une bande - Google Patents

Mécanisme électopneumatique de formation de la foule en particulier pour machines à assembler les extrémités d'une bande Download PDF

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Publication number
EP0477734A1
EP0477734A1 EP91115773A EP91115773A EP0477734A1 EP 0477734 A1 EP0477734 A1 EP 0477734A1 EP 91115773 A EP91115773 A EP 91115773A EP 91115773 A EP91115773 A EP 91115773A EP 0477734 A1 EP0477734 A1 EP 0477734A1
Authority
EP
European Patent Office
Prior art keywords
pneumatic
plates
shed
frames
pneumatic cylinders
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Withdrawn
Application number
EP91115773A
Other languages
German (de)
English (en)
Inventor
Jörn Dipl.-Ing. Sponder
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.)
F Oberdorfer & Co KG Industriegewebe-Technik GmbH
Original Assignee
F Oberdorfer & Co KG Industriegewebe-Technik GmbH
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 F Oberdorfer & Co KG Industriegewebe-Technik GmbH filed Critical F Oberdorfer & Co KG Industriegewebe-Technik GmbH
Publication of EP0477734A1 publication Critical patent/EP0477734A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/22—Fluid-operated jacquards

Definitions

  • the invention relates to an electro-pneumatic shedding device, in particular for seam machines for the production of wide seams in the continuous making of fabric tapes, such as sieves, for dewatering and drying of fibrous materials, dryer fabrics, wet felts and the like.
  • seam machines for the production of wide seams in the continuous making of fabric tapes, such as sieves, for dewatering and drying of fibrous materials, dryer fabrics, wet felts and the like.
  • jacquard heads have been used for training in seam and weaving machines.
  • These jacquard heads consist of almost innumerable, complex mechanical parts, the manufacture and assembly of which are not only expensive, but which can also be easily contaminated, for example by abrasion of the thread impregnation, flying fibers and dust.
  • This dirt not only slides down and mattes, so that the pull-downs rot and tear, resulting in destruction of the weaving harness, but they also fly open and impair the mechanical movement of the jacquard head.
  • the mechanical scanning and movement of the known jacquard heads results in a limitation of the speed in the formation of the shed and thus a reduction in the efficiency of the machine.
  • jacquard heads have already become known in which the conventional device for scanning a pattern of a punched card, which is guided over a card roll on which the scanning is carried out by stylus pins engaging in holes in the card, by electronic scanning with microprocessors in conjunction with Data storage is replaced, in which the sample and manufacturing data for the production of a design can be written, which emit control signals for the control of the lifting elements according to a specific operating program (DE-PS 36 07 530).
  • An electromagnetic plant selection control for jacquard machines is also known (DE-OS 38 33 480), in which each electromagnet of the selection control can be controlled according to the pattern with the aid of a microprocessor.
  • a device for lifting and lowering the warp threads of a weaving machine has become known (DE-AS 29 39 421), in which the warp threads are connected to up and down piston rods of a number of pneumatic cylinders. Due to the up and down piston rods, the warp threads are moved from one position to another and back again according to a predetermined selection rule.
  • a device for lifting and lowering the warp threads of a weaving machine has become known (DE-AS 29 39 421), in which the warp threads are connected to up and down piston rods of a number of pneumatic cylinders. Due to the up and down piston rods, the warp threads are moved from one position to another and back again according to a predetermined selection rule.
  • such a device is unsuitable for taking over the function of a jacquard head because its space requirement is too large and the problem of controlling the cylinders is not solved so that the use of punched cards can also be dispensed with.
  • the object of the invention is therefore to further develop the shedding device of the generic type in such a way that it works much more efficiently, in particular with seam machines, i.e. can be manufactured and maintained more trouble-free than a previous type of jacquard head and at a considerably lower cost than such a jacquard head, and it should also be possible to produce relatively wide seams without causing the warp threads forming the compartment to be distorted in such cases is coming.
  • the shedding device consists of a plurality of the warp threads for shedding up and down moving pneumatic cylinders with stroke limitation, which are assembled in plates or frames parallel to each other to form a block and acted upon by a back pressure and pneumatically via valves can be controlled, the lifting height of the individual pneumatic cylinders is adjustable so that the shed movement of all warp threads of the seam is the same or almost the same.
  • the stroke of the pneumatic cylinder is approximately 110-150 mm and is adjustable by means of an adjusting nut on the piston rod side, that the plates or frames each contain 16-25 pneumatic cylinders and that up to 600 pneumatic cylinders are in one block and thus combined to form a shed formation device, so that 600 warp threads can be actuated, which means an increase of almost 100% compared to the thread count that has previously been operable with the help of jacquard heads.
  • valves for the pneumatic control of the pneumatic cylinders which can be controlled via a microprocessor control, or piezo valves that are opened and closed in connection with a bending transducer that is operated by one minimal pneumatic air flow can be controlled.
  • the electro-pneumatic shed forming device consists of a plurality of pneumatic cylinders 8 which raise and lower the warp threads 24 for shed formation and which are arranged parallel to one another and in rows next to one another in plates or frames 1, 2, 19 are which are assembled to form a block 20 and are individually pneumatically controlled via valves 21 (FIG. 5), not shown in FIGS. 1 and 3.
  • These valves 21 are used for the pneumatic control of the pneumatic cylinders 8 and are either small electromagnetic valves which are controlled by a microprocessor control or piezo valves which are opened and closed in connection with a bending transducer which is operated by minimal pneumatics -Air flow is controllable.
  • the upper and lower crossbeams 1 and 2 are connected to one another on both sides by a side part 19, of which only the left side part is shown in FIGS. 3 and 4, with only three pneumatic cylinders 8 being shown and one for simplification in the figures mentioned such frame contains up to 25 such pneumatic cylinders, an embodiment with 16 pneumatic cylinders being shown within a plate in FIG. 1.
  • an embodiment with 16 frames, each with 25 pneumatic cylinders has proven particularly useful.
  • the number of pneumatic cylinders depends on how many warp threads 24 are to be controlled for shed formation. These warp threads are releasably attached to the upper end of the piston rods 6, for example clamped.
  • the individual plates or frames forming a block 20 can be exchanged separately, so that the block can be easily adapted to the various seams to be produced, as far as the seam width and the number of warp threads are concerned.
  • the lifting height of the individual pneumatic cylinders 8 can be set so that the shed movement of all the warp threads 24 of the seam is the same or almost the same, a fact which, in particular when producing relatively wide seams, for example a 16 cm wide seam, is an optimal seam production enables.
  • the pneumatic cylinders 8 lying in the plates or frames at the plate edge or frame edge can be set to a larger or smaller stroke length than the pneumatic cylinders located further to the plate or frame center.
  • optimal means that the shed movement of the warp threads, which in the case of wide seams due to the fact that the warp threads lying on the seam edge must have a greater thread length due to their distance from the center of the seam when seaming, has so far not been woven in without distortion could, is now possible without distortion.
  • a wide woven seam if it is produced with the previous means, namely with a jacquard head of a conventional design, results in a relatively inhomogeneous structure, in particular with regard to the distribution of strength in the seam area. This inhomogeneity is completely eliminated by the proposed invention.
  • the lifting height of the individual pneumatic cylinders 8 can be adjusted so that the pneumatic cylinders or their piston rods 6 lying in the plates or frames at the plate edge or frame edge have a greater stroke length than those further to the plates - or frame center located pneumatic cylinder, the stroke of this cylinder is approximately 110-150 mm and for its adjustment a piston rod-side adjusting nut 22 is used, which can be seen from FIG. 1 and the longitudinal sectional view of a pneumatic cylinder in FIG. 2, 3 and 4, this nut with lock nut 23, which is screwed onto a threaded pin 13, is not shown.
  • a piston 5 is seated on each piston rod 6, which piston receives compressed air introduced through the hose nozzle 3 through the cylinder base 27 in the direction of arrow B against a lockable one in the cylinder chamber 9 and in the upper crossbar 1 Opening 14 introducible air pressure is displaceable, namely up to the stop 7 in the area of the cylinder head, which closes the cylinder chamber 9 and sits below a bearing 4 for the piston rod 6, which is preceded by an O-ring 11 which seals the cylinder chamber 9 when the piston rod passes through the cylinder head.
  • the cylinder base 27 is sealed by means of O-rings 12 from the compressed air space which is formed on the front side of the piston during the upward movement of the piston.
  • the valves 21 control the supply and delivery of compressed air from the pneumatic cylinders 8 via the connection nipple 26 (FIG. 5) in such a way that the pistons 5 and thus the piston rods 6 and the warp threads 24 connected to them are opened and closed according to the program for shedding move away.
  • the valves 21 receive their control impulses via the microprocessors already mentioned, depending on the desired seam program.
  • the piston rods 6 are all at the same height.
  • the dashed representation of the threaded pin 13a in FIG. 3 shows, for example, a gradation in height of the cylinders.
  • any number of customer-specific or tissue-specific designs can be programmed in the seam area, i.e. without using the usual cards and their production by means of a card-making machine, which means that the operational safety of the shedding device compared to conventional jacquard heads is significantly increased and, moreover, the cost-effectiveness of the seam production is also increased considerably because the laborious adjustment required previously and the associated risk of adjusting the warp thread control elements are eliminated.
  • the invention thus offers the possibility of replacing the complex jacquard heads with a much simpler and more efficient shed formation device with pneumatic cylinders. A conversion of the sewing machines working with jacquard heads and in general weaving machines seems to be possible without further ado.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP91115773A 1990-09-26 1991-09-17 Mécanisme électopneumatique de formation de la foule en particulier pour machines à assembler les extrémités d'une bande Withdrawn EP0477734A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904030464 DE4030464A1 (de) 1990-09-26 1990-09-26 Elektro-pneumatische fachbildungseinrichtung, insbesondere fuer nahtmaschinen
DE4030464 1990-09-26

Publications (1)

Publication Number Publication Date
EP0477734A1 true EP0477734A1 (fr) 1992-04-01

Family

ID=6415030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115773A Withdrawn EP0477734A1 (fr) 1990-09-26 1991-09-17 Mécanisme électopneumatique de formation de la foule en particulier pour machines à assembler les extrémités d'une bande

Country Status (3)

Country Link
EP (1) EP0477734A1 (fr)
JP (1) JPH04245948A (fr)
DE (1) DE4030464A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536899A3 (en) * 1991-09-10 1993-07-14 Nippon Filcon Co., Ltd. Shedding system
US5494080A (en) * 1991-09-10 1996-02-27 Nippon Filcon Co., Ltd. Arcuate heddle and shedding system employing an arcuate heddle
US5647403A (en) * 1995-04-04 1997-07-15 Milliken Research Corporation Jacquard loom latch control mechanism
CN101058912B (zh) * 2007-05-29 2011-09-14 浙江理工大学 气动提花装置
CN103614840A (zh) * 2013-11-26 2014-03-05 江苏宋和宋智能科技有限公司 一种气动提花装置
CN106192194A (zh) * 2016-08-30 2016-12-07 宜兴市华宜针织有限公司 双针床贾卡经编机龙头电子版竖针控制装置
CN113166982A (zh) * 2018-12-12 2021-07-23 泰普纺织瑞典公司 使用空气压力的梭口方法和设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29513815U1 (de) * 1995-08-29 1995-10-19 Textilma Ag, Hergiswil Textilmaschine zur Herstellung von Textilerzeugnissen aus Fäden

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2156069A1 (en) * 1971-10-06 1973-05-25 Romano Enrico Warp yarn pneumatic actuating device - reducing mass of actuated parts to increase jacquard machine speed and simplify ser
DE2832515A1 (de) * 1977-07-26 1979-02-15 Brochier Soieries J Vorrichtung zum heben und senken jedes einzelnen kettfadens in einem webstuhl
DE2939421B1 (de) * 1979-09-28 1981-01-22 Grosse Webereimaschinen Gmbh Vorrichtung zum Heben und Senken der Kettfaeden einer Webmaschine
EP0043441A1 (fr) * 1980-07-09 1982-01-13 Hermann Wangner GmbH & Co. KG Procédé et dispositif pour réaliser une jointure tissée comme liaison entre deux bouts de tissu

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2156069A1 (en) * 1971-10-06 1973-05-25 Romano Enrico Warp yarn pneumatic actuating device - reducing mass of actuated parts to increase jacquard machine speed and simplify ser
DE2832515A1 (de) * 1977-07-26 1979-02-15 Brochier Soieries J Vorrichtung zum heben und senken jedes einzelnen kettfadens in einem webstuhl
DE2939421B1 (de) * 1979-09-28 1981-01-22 Grosse Webereimaschinen Gmbh Vorrichtung zum Heben und Senken der Kettfaeden einer Webmaschine
EP0043441A1 (fr) * 1980-07-09 1982-01-13 Hermann Wangner GmbH & Co. KG Procédé et dispositif pour réaliser une jointure tissée comme liaison entre deux bouts de tissu

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536899A3 (en) * 1991-09-10 1993-07-14 Nippon Filcon Co., Ltd. Shedding system
US5360038A (en) * 1991-09-10 1994-11-01 Nippon Filcon Co., Ltd. Seam weaving method using a shedding system with pneumatically operated heddles
US5494080A (en) * 1991-09-10 1996-02-27 Nippon Filcon Co., Ltd. Arcuate heddle and shedding system employing an arcuate heddle
US5647403A (en) * 1995-04-04 1997-07-15 Milliken Research Corporation Jacquard loom latch control mechanism
CN101058912B (zh) * 2007-05-29 2011-09-14 浙江理工大学 气动提花装置
CN103614840A (zh) * 2013-11-26 2014-03-05 江苏宋和宋智能科技有限公司 一种气动提花装置
CN106192194A (zh) * 2016-08-30 2016-12-07 宜兴市华宜针织有限公司 双针床贾卡经编机龙头电子版竖针控制装置
CN113166982A (zh) * 2018-12-12 2021-07-23 泰普纺织瑞典公司 使用空气压力的梭口方法和设备
CN113166982B (zh) * 2018-12-12 2023-03-14 泰普纺织瑞典公司 使用空气压力的梭口方法和设备

Also Published As

Publication number Publication date
DE4030464A1 (de) 1992-04-02
JPH04245948A (ja) 1992-09-02

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