EP0138117A2 - Spannkette für Spannrahmentrockner - Google Patents

Spannkette für Spannrahmentrockner Download PDF

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Publication number
EP0138117A2
EP0138117A2 EP84111545A EP84111545A EP0138117A2 EP 0138117 A2 EP0138117 A2 EP 0138117A2 EP 84111545 A EP84111545 A EP 84111545A EP 84111545 A EP84111545 A EP 84111545A EP 0138117 A2 EP0138117 A2 EP 0138117A2
Authority
EP
European Patent Office
Prior art keywords
bearing surface
links
guide rails
surface portions
tenter frame
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
Application number
EP84111545A
Other languages
English (en)
French (fr)
Other versions
EP0138117A3 (en
EP0138117B1 (de
Inventor
Jan Cramon Braumann
Hellmuth Vogeler
Walter Mccall Hoover, Jr.
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.)
Babcock Textilmaschinen GmbH
Original Assignee
Babcock Textilmaschinen 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24141996&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0138117(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Babcock Textilmaschinen GmbH filed Critical Babcock Textilmaschinen GmbH
Publication of EP0138117A2 publication Critical patent/EP0138117A2/de
Publication of EP0138117A3 publication Critical patent/EP0138117A3/en
Application granted granted Critical
Publication of EP0138117B1 publication Critical patent/EP0138117B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • D06C3/02—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by endless chain or like apparatus

Definitions

  • Tenter frames are used primarily by the textile industry as an aid in the drying or heat setting of fabrics.
  • the present invention relates to a tenter frame having an endless chain associated therewith, and that is free from lubrication requirements for the tenter frame guide rails and chain, thereby avoiding undesirable staining of the fabrics by the lubricants.
  • the links of the chain include low friction polymer wear elements that do not require lubrication.
  • a tenter frame is typically used to hold or stretch fabric in a flat sheet and convey it in that condition through a high temperature dryer. This speeds moisture removal and may be used in a heat setting process for synthetic fabrics.
  • the tenter frame itself usually extends the length of the dryer and includes a pair of spaced parallel guide rails that are supported on both ends and along the length thereof.
  • Each rail usually has two longitudinal channels to guide and support an endless chain therein.
  • the endless chain is looped or threaded around each rail, running the length thereof through the channels.
  • Tenter clips or the like are carried by at least some of the chain links and releasably grip the fabric to stretch it across the space between the parallel rails.
  • the opposite side of the rail is a return for the chain and clips.
  • the chains are moved by a suitable drive mechanism, such as a driven gear at one end of each rail and a corresponding pulley or idler wheel at the other end.
  • a suitable drive mechanism such as a driven gear at one end of each rail and a corresponding pulley or idler wheel at the other end.
  • the components of the tenter machine and the chain must be durable and strong.
  • substantially all of the weight of the moving chain and fabric is borne by the stationary tenter guide rail, creating sizeable frictional forces in the direction of the longitudinal axis of the rail. Further frictional forces are established in the direction transverse to the rail due to the horizontal stretching of the fabric, which urges the moving tenter clips and chain against the stationary tenter guide rail. Still further frictional forces of a torsional nature are created by the typical gooseneck configuration for attachment of the tenter clips to the chain.
  • Lubricants are typically applied at several places and spread along the length of the tenter rails by the movement of the endless chain associated with the guide rail.
  • excess lubricant often accumulates at the point of application and migrates onto the tenter clips or fabrics.
  • the lubricants do not spread evenly along the rail, leaving dry unlubricated spots, which cause excessive and uneven wear.
  • Still further problems involve trying to determine if there is sufficient lubrication along the entire length of the guide rail. If the lubrication is insufficient, the rail and chain rapidly wear due to the high speed and frictional loading, necessitating an expensive and time consuming overhaul.
  • the present invention has overcome these problems with a novel and unique tenter frame that incorporates blocks of low friction polymer material on the bearing surfaces between the guide rail and the-chain.
  • the polymer blocks conform to the shape of the rail and are substantially the only contacts between the rail and chain.
  • One of the major advantages is the elimination of the need to lubricate the guide rail, which avoids the undesirable staining and cloth contamination due to soiling from lubricants.
  • Other advantages include less down time, less maintenance time for lubrication and repair, higher operating speeds, and higher efficiency. Cost savings result from the significant reductions in fabric contamination, maintenance time, parts costs, and lubricant usage.
  • a tenter frame for transporting sheet like material in an open width condition along a predetermined longitudinal axis.
  • the tenter frame includes a pair of parallel, spaced guide rails having bearing surface portions generally parallel to the tenter frame longitudinal axis.
  • An endless chain is associated with the guide means and includes links having bearing surfaces that are located generally complementary to the bearing surface portions of the guide means.
  • Blocks of low friction polymer material are carried by certain of the links and are disposed-between the bearing surface portions of the guide rails and the links.
  • the blocks of polymer material are substantially the only contact between the links and the guide rails and provide essentially all of the lubrication necessary for the operating of the tenter frame.
  • the blocks of low friction polymer material are preferably a carbon/graphite filled polytetrafluoroethylene polymer.
  • the reference character 10 generally indicates a tenter frame extending into a dryer 11 through an access slot (not shown).
  • the dryer does not form a part of the present invention and it is omitted from other figures for clarity.
  • the tenter frame 10 includes a pair of relatively spaced parallel guide rails 12 and a driven rotational means 14 at one end of each rail.
  • An endless chain 15 is associated with and guided by each guide rail 12 and is wrapped around the respective rotational means 14 for endless movement as shown by the arrows in FIG. 2, for conveying a sheet material S, such as a textile fabric, longitudinally through the oven 11 in an open width condition.
  • the tenter rails 12 extend for predetermined lengths, which may, for example, exceed one hundred feet, and thereby define a longitudinal axis L (FIG. 2).
  • Each rail 12 may be a composite construction with each section disposed in connected end to end fashion to create butt joints along the length of the rail, or it may be extruded as a single continuous unit.
  • Each rail may be supported as necessary or desirable along its length in a convenient manner.
  • the illustrated rail 12 of FIGS. 2, 3 and 4 includes a central portion 16 with a hollow core and a pair of side portions 17 disposed on opposite sides thereof.
  • Each side portion 17 defines an upwardly open longitudinally extending channel 18 that is coextensive with the tenter rail 12.
  • each channel 18 includes a relatively flat, vertical exterior side wall 20 along the outermost portion of the channel. Directly opposite across the channel and parallel thereto is a relatively flat, vertical interior side wall 21. The bottom of the channel is formed by a relatively flat lower surface 22 that is generally perpendicular to the exterior and interior side walls 20, 21.
  • An upper wall portion 23 adjoining the interior side wall 18 defines within the channel 16 a centrally extending side opening groove 24.
  • the chain 15 extends along the channel 18 and is composed of a series of interconnected links, including alternatingly arranged carrier links 30 and roller links 31.
  • a suitable fabric holding means of known construction such as a clip, pin device, or combination.
  • the fabric holding means comprises a clip means 32.
  • the clip means 32 is removably attached to the upper body portion of the carrier link 30 and includes a fixed yoke shaped clamping portion 33 and a pivoted jaw 34 carried thereby so as to releasably clamp the sheet material S.
  • the carrier link 30, as shown in more detail in Figures 5 to 8, is of a unitary construction and formed in a generaly C-shaped cross section including a laterally extending lower or base portion 30a with a planar lower surface, a laterally extending upper or top portion 30b, and a generally vertical front portion 30c extending between the base portion 30a and the top portion 30b. Apertures 35 are provided in the base and top portions 30a, 30b for receiving a pin for connection to the roller links 31.
  • the link 30 in its operative position in the channel 18, has the vertically oriented outer surface of the front portion 30c disposed in complementary opposing relation to the exterior wall 20 of the channel, while the lower surface of the base portion 30a is disposed in opposing complementary relation to the lower surface 22 of the channel.
  • the rearmost extremity 30d of the base portion 30a is located within the side opening groove 24 of the channel 16.
  • the aforementioned portions of the carrier link 30 are maintained out of contacting relation with the bearing surfaces of the channel 18 by blocks of low friction material generally indicated by the reference characters 40 and 41.
  • These blocks 40, 41 are carried by the carrier link 30 at all points of contact with the rail 12 and thus prevent metal to metal contact between the carrier links 30 and the rail 12.
  • the very low frictional properties of the polymer blocks permit the chain 15 to be moved in its course of travel along the channel 18 without the necessity of any additional lubricants.
  • the low friction polymer blocks 40, 41 are composed of a filled low friction fluorocarbon polymer, preferably polytetrafluoroethylene (PTFE) polymer, and the polymer contains a graphite filler to further contribute to the extremely low frictional properties of the polymer blocks.
  • the graphite filler also contributes significantly to the structural properties of the blocks, and enables them to withstand the high loading and shear forces encountered in this particular environment.
  • PTFE is produced by controlled polymerization of tetrafluorethylene and contains only carbon and fluorene.
  • the high bond energy between the two elements provides this polymer with certain unique properties. For instance, it is essentially chemically inert to industrial chemicals and solvents, it retains its useful physical properties over a range of temperatures from approximately -250°C to +250°C; it has one of the lowest coefficients of friction known for solids; and it has a low degree of wetting.
  • the graphite filled PTFE as used in the present invention is not brittle and has little deformation or creepage under load at high temperatures.
  • Typical physical properties include a bulk density of approximately 2 grams per cubic centimeter, transverse strength of approximately 2200 ft./lbs. per square inch, and thermal expansion in the range of approximately 30-45 x 10- 6 inch/inch/ o F.
  • the thickness of the block may vary, thicknesses of at least about 1/8 of an inch is preferred because it provides improved mechanical properties under the relatively high loads, high speeds of operation, and harsh environmental factors encountered in a tenter dryer.
  • each polymer block may vary as necessary or desirable provided that it has a surface configuration complementary to the opposing surfaces of the tenter rail channel and groove that it slides against, and that it is substantially the only contact between the tenter rail and the link. This permits operation without the need for any lubricants that might contaminate the fabric.
  • the particular configuration of blocks 40, 41 as illustrated herein is preferred since this configuration provides a means for reliable securement of the blocks to the carrier link 30 while permitting ready replacement if necessary.
  • the block 40 which is located on the front portion 30c of the carrier link 30 has an outer sliding surface 42 that is substantially planar and conforms to the side wall 20 of the channel 18.
  • the outer side edge portions of the block are preferably chamfered, as illustrated (FIG. 7).
  • the block inner surface 44 includes projections, as indicated at 45, that fit into complementary openings on the front portion 30c of the carrier link 30 to prevent lateral shifting movement of the block with respect to the link.
  • An additional arcuately-shaped projection 46 cooperates with a corresponding arcuately-shaped cutout in the front portion 30c to assist in properly locating the block and preventing vertical shifting movement.
  • the block 40 has a depending flange portion 48 along the lower side thereof which underlies the base portion 30a. This provides a lower bearing surface for engagement with the lower wall 22 of the channel 18.
  • the entire block 40 is secured to the carrier link with rivets 49, as illustrated, and preferably with the additional use of an adhesive, such as an epoxy adhesive, disposed between the block inner surface 44 and the carrier link front portion 30c.
  • the other block 41 is composed of two cooperating interfitting components 41a of similar shape:
  • Each block component 41a includes a raised boss portion 50, a pin 51 integrally formed with and projecting from the boss 50, and a hole or socket 52 for receiving the corresponding pin 51 of the other component or half 41a.
  • the raised bosses 50 cooperate with and are received within a correspondingly-shaped cutout or recess 53 on the base portion 30a. This secures the block 41 to the base portion 30a.
  • the assembled thickness of the two bosses 50 is approximately the same as the thickness of the base portion 30a so that the components fit snugly against the upper and lower surfaces of the base portion 30a.
  • the two components are further secured together by a rivet 49 as illustrated and are adhered to one another and to the base plate 30a by a suitable adhesive, such as an epoxy adhesive.
  • top and bottom bearing surfaces of the block 41 are substantially parallel and spaced from one another a distance substantially corresponding to the height of the groove 24 such that the block 41 is substantially fully received within the groove 24 as shown in Figure 4.
  • the PTFE shrouded links 30 achieve a complementary sliding fit within the tenter rail channel 18 and groove 24 while providing a low friction PTFE surface at all points of contact with the rail.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Advancing Webs (AREA)
  • Treatment Of Fiber Materials (AREA)
EP19840111545 1983-09-29 1984-09-27 Spannkette für Spannrahmentrockner Revoked EP0138117B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53728183A 1983-09-29 1983-09-29
US537281 1983-09-29

Publications (3)

Publication Number Publication Date
EP0138117A2 true EP0138117A2 (de) 1985-04-24
EP0138117A3 EP0138117A3 (en) 1985-12-11
EP0138117B1 EP0138117B1 (de) 1992-06-17

Family

ID=24141996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840111545 Revoked EP0138117B1 (de) 1983-09-29 1984-09-27 Spannkette für Spannrahmentrockner

Country Status (2)

Country Link
EP (1) EP0138117B1 (de)
DE (1) DE3485772T2 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882820A (en) * 1989-03-21 1989-11-28 Gessner Industries, Inc. Tenter frame chain with low friction slide block
DE3832221A1 (de) * 1988-09-22 1990-03-29 Babcock Textilmasch Kette fuer spannrahmentrockner oder dergl.
DE3925737A1 (de) * 1989-08-03 1991-02-07 Brueckner Trockentechnik Gmbh Warenbahn-transportkette fuer spannmaschinen
US5005271A (en) * 1987-04-16 1991-04-09 Bruckner Trockentechnick Gmbh & Co. Kg Conveyor chain for machines for tensioning lengths of material
WO1991019848A1 (de) * 1990-06-15 1991-12-26 A. Monforts Gmbh & Co. Gleitlager
FR2674836A1 (fr) * 1991-04-08 1992-10-09 Amdes Sa Dispositif de guidage d'une piece a deplacement rectiligne soumise a une traction perpendiculaire a son deplacement.
WO2019007577A1 (de) 2017-07-06 2019-01-10 Brückner Maschinenbau GmbH & Co. KG Gleitelement insbesondere für eine reckanlage und/oder transportkette sowie eine zugehörige reckanlage oder transportkette
CN111041751A (zh) * 2019-11-27 2020-04-21 无锡香柏树印染机械有限公司 一种下置式可替换无油导轨

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013650A1 (de) * 2005-03-24 2006-10-05 A. Monforts Textilmaschinen Gmbh & Co. Kg Vorrichtung zum kontinuierlichen thermischen Behandeln einer textilen Stoffbahn

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1419274A (fr) * 1963-12-31 1965-11-26 Kalle Ag Dispositif pour saisir et entraîner les bords des films ou des tissus
DE2135032A1 (de) * 1971-07-14 1973-01-25 Erhardt & Leimer Kg Nadelkette zum fuehren und breitspannen von warenbahnen
GB2007281A (en) * 1977-11-03 1979-05-16 Dornier Gmbh Lindauer Tenter Frame
DE2849628A1 (de) * 1978-11-16 1980-05-22 Dornier Gmbh Lindauer Spannkluppe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1419274A (fr) * 1963-12-31 1965-11-26 Kalle Ag Dispositif pour saisir et entraîner les bords des films ou des tissus
DE2135032A1 (de) * 1971-07-14 1973-01-25 Erhardt & Leimer Kg Nadelkette zum fuehren und breitspannen von warenbahnen
GB2007281A (en) * 1977-11-03 1979-05-16 Dornier Gmbh Lindauer Tenter Frame
DE2849628A1 (de) * 1978-11-16 1980-05-22 Dornier Gmbh Lindauer Spannkluppe

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005271A (en) * 1987-04-16 1991-04-09 Bruckner Trockentechnick Gmbh & Co. Kg Conveyor chain for machines for tensioning lengths of material
DE3832221A1 (de) * 1988-09-22 1990-03-29 Babcock Textilmasch Kette fuer spannrahmentrockner oder dergl.
US4882820A (en) * 1989-03-21 1989-11-28 Gessner Industries, Inc. Tenter frame chain with low friction slide block
DE3925737A1 (de) * 1989-08-03 1991-02-07 Brueckner Trockentechnik Gmbh Warenbahn-transportkette fuer spannmaschinen
WO1991019848A1 (de) * 1990-06-15 1991-12-26 A. Monforts Gmbh & Co. Gleitlager
FR2674836A1 (fr) * 1991-04-08 1992-10-09 Amdes Sa Dispositif de guidage d'une piece a deplacement rectiligne soumise a une traction perpendiculaire a son deplacement.
WO2019007577A1 (de) 2017-07-06 2019-01-10 Brückner Maschinenbau GmbH & Co. KG Gleitelement insbesondere für eine reckanlage und/oder transportkette sowie eine zugehörige reckanlage oder transportkette
DE102017115175A1 (de) 2017-07-06 2019-01-10 Brückner Maschinenbau GmbH & Co. KG Gleitelement insbesondere für eine Reckanlage und/oder Transportkette sowie eine zugehörige Reckanlage oder Transportkette
US11085490B2 (en) 2017-07-06 2021-08-10 Brückner Maschinenbau GmbH & Co. KG Sliding element, in particular for a stretching installation and/or conveyor chain, and associated stretching installation or conveyor chain
CN111041751A (zh) * 2019-11-27 2020-04-21 无锡香柏树印染机械有限公司 一种下置式可替换无油导轨
CN111041751B (zh) * 2019-11-27 2024-03-12 江苏香柏树机械科技有限公司 一种下置式可替换无油导轨

Also Published As

Publication number Publication date
EP0138117A3 (en) 1985-12-11
EP0138117B1 (de) 1992-06-17
DE3485772D1 (de) 1992-07-23
DE3485772T2 (de) 1992-12-24

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