EP3048196A1 - Barre à passettes d'un métier à tricoter chaîne - Google Patents

Barre à passettes d'un métier à tricoter chaîne Download PDF

Info

Publication number: EP3048196A1
Authority: EP; European Patent Office
Prior art keywords: cylinder; guide bar; container; piston; seal
Prior art date: 2015-01-26
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

Application number

EP15152503.7A

Other languages

German (de)

English (en)

Other versions

EP3048196B1 (fr

Inventor

Alexander Keller

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.)

Karl Mayer Textilmaschinenfabrik GmbH

Original Assignee

Karl Mayer Textilmaschinenfabrik 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.)

2015-01-26

Filing date

2015-01-26

Publication date

2016-07-27

2015-01-26 Application filed by Karl Mayer Textilmaschinenfabrik GmbH filed Critical Karl Mayer Textilmaschinenfabrik GmbH

2015-01-26 Priority to EP15152503.7A priority Critical patent/EP3048196B1/fr

2016-01-25 Priority to CN201610046288.5A priority patent/CN105821576B/zh

2016-07-27 Publication of EP3048196A1 publication Critical patent/EP3048196A1/fr

2017-03-15 Application granted granted Critical

2017-03-15 Publication of EP3048196B1 publication Critical patent/EP3048196B1/fr

Status Not-in-force legal-status Critical Current

2035-01-26 Anticipated expiration legal-status Critical

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Classifications

- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
- D04B27/10—Devices for supplying, feeding, or guiding threads to needles
- D04B27/24—Thread guide bar assemblies
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
- D04B27/10—Devices for supplying, feeding, or guiding threads to needles
- D04B27/24—Thread guide bar assemblies
- D04B27/26—Shogging devices therefor
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
- D04B27/10—Devices for supplying, feeding, or guiding threads to needles
- D04B27/24—Thread guide bar assemblies
- D04B27/32—Thread guide bar assemblies with independently-movable thread guides controlled by Jacquard mechanisms
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings

Definitions

the invention relates to a guide bar arrangement of a warp knitting machine with at least one yarn guide, which is arranged on a drive element, which is in operative connection with a drive device and at least one counter-force element, wherein the counter-force element comprises a piston-cylinder arrangement in which a piston over a piston rod is connected to the drive element, in a cylinder having a cylinder cross-section, movable over a stroke length and can be acted upon by a pressure medium.
Such a guide bar arrangement is for example off DE 100 35 160 A1 known.
the drive device moves the drive element and thus the one or more yarn guides connected to the drive element, so that a yarn guided by a yarn guide can be incorporated into a knitted fabric according to a predetermined pattern. If the drive element is not formed rigidly, which is the case for example in a so-called "string barre", then the drive device acts and the counterforce element together on the drive element to keep this tensioned.
the invention has for its object to minimize voltage changes in the drive element.
a guide bar assembly of the type mentioned above in that the cylinder is arranged in a filled with the pressure medium cavity of a container, wherein the cavity has a volume which is greater than an outer volume of the cylinder and with an interior of the cylinder on the Side of the piston, on which the piston rod is arranged, is in communication, and the cylinder is connected to the container at at least two positions which are spaced in a direction parallel to the stroke length, with the container.
the piston is guided over its stroke length in the cylinder.
the volume of the pressure medium is now much larger than the stroke volume, which results from the cross section of the cylinder and the stroke length, so that by the movement of the piston in the cylinder caused relative change in the total volume of stroke volume and volume of the cavity is substantially less than if only the stroke volume in the cylinder is available.
the relative change then results from the quotient of the stroke volume and the total volume. The larger the total volume, the lower the pressure change associated with the movement of the piston in the cylinder.
the cylinder is arranged in the container and thereby protected.
the two positions at the ends of the cylinder are arranged in a direction parallel to the stroke direction. This results in the greatest possible distance of the positions to each other and thus the greatest possible stability against a change in direction of the cylinder in the container.
the cavity surrounds the circumference of the cylinder.
a relatively large volume is available for the cavity, so that only a relatively small change in pressure results in a movement of the piston in the cylinder.
the piston rod is led out of the container through a first seal which is arranged on the cylinder, wherein a second seal is arranged between the cylinder and the container.
a first seal which is arranged on the cylinder
a second seal is arranged between the cylinder and the container.
the first seal cooperates with an inner side of the cylinder.
the inside of the cylinder must be processed relatively accurately anyway, because this inner side interacts with the piston and you want to achieve the highest possible tightness between the piston and the inside of the cylinder.
the corresponding accuracy in machining the inside of the cylinder can also be used for the positioning of the first seal.
the cylinder has an end face, with which cooperates the first seal.
the front page can be edited relatively accurately.
the first seal cooperates both with the inside and with the end face of the cylinder.
the first seal is disposed between the cylinder and a plug which is inserted into the container and sealed with the second seal against the container.
a plug which is inserted into the container and sealed with the second seal against the container.
the container has a fastening means projecting into the cavity, to which the cylinder is fastened is. You can then form the container with a greater length parallel to the stroke length than the cylinder. This makes it possible, for example, to use a cylinder designed as a standard part and at the same time to be free in dimensioning the volume of the cavity of the container.
a connection between the cavity and the inner space has a surface which is at least four times as large as a cross-sectional area of the cylinder.
the cylinder has a section between the stroke length and a wall of the container, through which the piston rod is led out of the container, in which the connection is arranged. This makes it possible in a simple manner to provide the connection and at the same time to fasten the cylinder in the region of the end, through which the piston rod is led out of the cylinder, to the container.
connection it is preferable for the connection to have one or more windows distributed in the circumferential direction in the section. These windows allow the passage of pressure medium virtually without throttling.
each window in the circumferential direction has an extension which is at least as large as a distance of the windows in the circumferential direction.
the windows are therefore relatively large in the circumferential direction.
each window has a length parallel to the stroke length which is greater than the extent in the circumferential direction.
the windows are therefore elongated, with the largest length parallel to the stroke direction.
the portion is formed in a continuous cylinder wall or in an extension element connected to the cylinder. This results in a very simple construction.
An in Fig. 1 schematically illustrated guide bar assembly 1 for a warp knitting machine has a plurality of yarn guide 2, which are arranged on a drive element 3.
the drive element 3 is formed in the present embodiment as a thin wire or rope. The drive element 3 is therefore not rigid and thus can not be loaded on pressure.
the drive element 3 is connected at one end to a drive device 4.
the drive device 4 may be formed, for example, as a pattern transmission. It can also have a linear drive.
the drive element 3 is connected to a counterforce element 5.
the counterforce element 5 is associated with Fig. 2 described in more detail.
the counterforce element 5 has a piston rod 6, which is connected via an intermediate member 7 with the drive element 3.
the intermediate member 7 is guided over a deflection roller 8. It is also possible to connect the drive element 3 directly to the piston rod 6.
the counterforce element 5 has a cylinder 9 which is arranged in a cavity 10 of a container 11.
a piston 12 is arranged, which is connected to the piston rod 6.
the piston 12 has an annular seal 13 which sealingly abuts against an inner wall 14 of the cylinder 9, but allows movement of the piston 12.
the piston 12 can be moved over a stroke length H in the cylinder 9.
the cylinder 9 has an inner cross section.
a product of internal cross-section and stroke length H defines a stroke volume.
the cylinder 9 is connected to the container 11 at two positions.
the container 11 has a fastening device 15 which projects into the cavity 10.
the cylinder 9 is connected to a first end 16 with the fastening device 15.
an O-ring 17 may be provided to seal the connection of the first end 6 with the container 11 to the outside.
the cylinder 9 is open at the first end 16 to the atmosphere.
the cylinder 9 has a second end 18 into which a first seal 19 is inserted.
the first seal 19 interacts with the inner wall 14 of the Cylinders 9 together.
the first seal 19 has a circumferential collar 20, which cooperates with the end face of the cylinder 9 at the second end 18.
the piston rod 6 is guided sealingly. Since the first seal 19 cooperates with the inner wall 14 of the cylinder, just like the piston 12, this results in a tolerance chain with few elements, so that one can achieve a relatively accurate fit between the piston rod 6 and the first seal 19. Transverse forces are avoided here.
the first seal 19 is disposed between the cylinder 9 and a plug 21 which is inserted into a wall 22 of the container 11, through which the piston rod 6 is guided to the outside.
the plug 21 may be screwed into the wall 22, for example.
the plug 21 is sealed in the wall 22, ie opposite the container 11, by a second seal 23.
the second seal 23 may be formed, for example, as an O-ring. However, larger tolerances are permissible here because the second seal 23 does not have to seal any moving parts.
the cylinder 9 has between the stroke length H and the wall 22 a portion 24 in which a plurality of windows 25 are formed.
the windows 25 are arranged distributed in the circumferential direction.
Each window 25 has an extent in the circumferential direction which is at least as large as a distance 26 between adjacent windows. How to get out Fig. 3 can recognize, the windows 25 are elongated, that is, they have parallel to the stroke length H has a length which is greater than an extension in the circumferential direction.
the windows 25 form a connection between the cavity 10 and the interior of the cylinder 9 on the side of the piston 12, on which the piston rod 6 is arranged.
This compound, ie the area of the windows 25, is at least four times as large as the cross-section of the cylinder 9 perpendicular to the stroke length H.
this window 25 then make up the majority of the circumference of the cylinder 9, so that the cylinder 9 is connected at the second end only via a single web 24 with the plug 21 and thus with the wall 22 of the container 11.
the cavity 10 has, as in Fig. 2 can recognize, a volume which is substantially larger than an outer volume of the cylinder 9.
the cavity 10 surrounds the cylinder 9 in the circumferential direction.
the volume of the cavity 10 is at least 25 times as large as the stroke volume, ie the product of stroke length H and cross-section of the cylinder 9. Accordingly, a relative change in the volume during a movement of the piston 12 in the cylinder 9 relatively low.
the absolute volume change corresponds to the maximum stroke volume.
the relative change then results from the quotients of stroke volume and sum of stroke volume and volume of the cavity 10. With a correspondingly large dimensioning of the cavity 10, therefore, a relative change can be kept small. It is then, when the volume of the cavity 10 is at least 25 times the stroke volume, a maximum of 4%. Accordingly small are caused by the relative change in the volume pressure fluctuations and thus changes in force on the piston rod 6.
the cavity 10 can by a pressure port 27 shown only schematically with a pressure medium under a be filled predetermined pressure.
the pressure medium may be compressed air, for example.
a counterforce element is shown with a cylinder 9.
a cylinder 9 it is readily possible to arrange in the container 11 and a plurality of cylinders 9 and accordingly to apply a plurality of drive elements 3 for yarn guide 2. It can be assumed that not all drive elements 3 are always moved identically, so that absolute pressure fluctuations due to movements of the drive elements 3 will generally not add up completely.
the cylinder 9 is formed with a continuous cylinder tube, wherein the windows 25 are formed in the cylinder tube. But it is also possible to connect an extension element with the cylinder 9 and then form the window 25 in the extension element, wherein the extension element forms a connection between the cylinder and the wall 22 of the container 11.

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Knitting Machines (AREA)
Actuator (AREA)
Portable Nailing Machines And Staplers (AREA)

EP15152503.7A 2015-01-26 2015-01-26 Barre à passettes d'un métier à tricoter chaîne Not-in-force EP3048196B1 (fr)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
EP15152503.7A EP3048196B1 (fr)	2015-01-26	2015-01-26	Barre à passettes d'un métier à tricoter chaîne
CN201610046288.5A CN105821576B (zh)	2015-01-26	2016-01-25	经编机的梳栉装置

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP15152503.7A EP3048196B1 (fr)	2015-01-26	2015-01-26	Barre à passettes d'un métier à tricoter chaîne

Publications (2)

Publication Number	Publication Date
EP3048196A1 true EP3048196A1 (fr)	2016-07-27
EP3048196B1 EP3048196B1 (fr)	2017-03-15

Family

ID=52432670

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP15152503.7A Not-in-force EP3048196B1 (fr)	2015-01-26	2015-01-26	Barre à passettes d'un métier à tricoter chaîne

Country Status (2)

Country	Link
EP (1)	EP3048196B1 (fr)
CN (1)	CN105821576B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3741893B1 (fr) *	2020-01-24	2022-03-09	KARL MAYER STOLL R&D GmbH	Agencement de boulon à rotule

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10035160A1 (de)	2000-07-19	2002-02-07	Mayer Textilmaschf	Kettenwirkmaschine mit mindestens einer Barre
DE10159403A1 (de) *	2001-12-04	2003-06-18	Mayer Textilmaschf	Wirkmaschine
DE202014105280U1 (de) *	2014-11-04	2014-11-18	Karl Mayer Textilmaschinenfabrik Gmbh	Legebarrenanordnung einer Kettenwirkmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6974001B2 (en) *	2003-11-19	2005-12-13	Arvinmeritor Technology, Llc.	Temperature compensating gas spring
CN103511391B (zh) *	2013-10-18	2015-12-30	浙江工业大学	一种带储气套的恒力输出气浮装置

2015
- 2015-01-26 EP EP15152503.7A patent/EP3048196B1/fr not_active Not-in-force
2016
- 2016-01-25 CN CN201610046288.5A patent/CN105821576B/zh not_active Expired - Fee Related

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10035160A1 (de)	2000-07-19	2002-02-07	Mayer Textilmaschf	Kettenwirkmaschine mit mindestens einer Barre
DE10159403A1 (de) *	2001-12-04	2003-06-18	Mayer Textilmaschf	Wirkmaschine
DE202014105280U1 (de) *	2014-11-04	2014-11-18	Karl Mayer Textilmaschinenfabrik Gmbh	Legebarrenanordnung einer Kettenwirkmaschine

Also Published As

Publication number	Publication date
EP3048196B1 (fr)	2017-03-15
CN105821576B (zh)	2018-05-22
CN105821576A (zh)	2016-08-03

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