EP0219941A1 - Spannklemmen - Google Patents

Spannklemmen Download PDF

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Publication number
EP0219941A1
EP0219941A1 EP86306462A EP86306462A EP0219941A1 EP 0219941 A1 EP0219941 A1 EP 0219941A1 EP 86306462 A EP86306462 A EP 86306462A EP 86306462 A EP86306462 A EP 86306462A EP 0219941 A1 EP0219941 A1 EP 0219941A1
Authority
EP
European Patent Office
Prior art keywords
clip
stenter
pin
fabric
rolling elements
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Withdrawn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
EP86306462A
Other languages
English (en)
French (fr)
Inventor
Vasant Vyankatesh Apte
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.)
PRIMATEX MACHINERY PRIVATE Ltd
Original Assignee
PRIMATEX MACHINERY PRIVATE Ltd
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
Priority claimed from GB08521769A external-priority patent/GB2169625A/en
Application filed by PRIMATEX MACHINERY PRIVATE Ltd filed Critical PRIMATEX MACHINERY PRIVATE Ltd
Publication of EP0219941A1 publication Critical patent/EP0219941A1/de
Withdrawn legal-status Critical Current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
    • D06C3/04—Tentering clips

Definitions

  • This invention relates to clips for use in a stenter which is a machine for thermally treating a textile fabric.
  • the fabric in open width condition is passed through the stenter.
  • hot air/steam is directed onto the fabric from above and below by an assembly of blowers, radiators, nozzles etc. arranged above and below the fabric.
  • the assemblies are known as 'chambers' and are suitably insulated to ensure minimum loss of heat.
  • the fabric in open width condition is conveyed through the chambers by holding its edges in an assembly of devices known as stenter clips.
  • the stenter clips are either joined together to form an endless chain or are conveyed on a separate endless roller chain.
  • Two such endless chains are located one at either side of the stenter and convey the fabric through the chambers. Where the fabric enters the chambers, means are provided for fixing the fabric on the clips.
  • the two endless chains are made to move continuously in such a way that it is possible to convey the fabric through the heating chambers in a controlled manner.
  • the entire assembly of the clips, the endless chains, the guide rails for the clips and the roller chains has to be located within the hot chamber. It occupies some space and so requires the vertical spacing of the air ducts directing the hot air/steam onto the fabric from above and below the fabric.
  • the rate of evaporation of moisture from the fabric will be inversely proportional to the said vertical spacing and so the greater the spacing is, the lower will be rate of evaporation and, ultimately, the lower the production and performance will be.
  • this vertical spacing of the air ducts above and below the fabric varies between 100 to 150 mm depending upon their respective designs.
  • a rolling element is used to locate the clip properly in the chain rail and to take the load exerted by the widthwise pull of the fabric during stretching.
  • the entire clip rests on two rails and is made to slide over them while conveying the fabric through the stenter.
  • These rails may be of self-lubricating graphite-impregnated material or sintered phosphor bronze material requiring normal lubrication. This arrange- ment is liable to tilt in upwardly or downwardly causing fluctuations in the fabric height because there is nothing to prevent the upward or downward tilting of the clip.
  • a stenter clip comprising means for attaching the clip to a conveyor within a stenter, means to which a clip gate and/or a pin carrier is or can be attached and rolling elements for engaging a guide rail in the stenter to guide the clip through the stenter, characterised in that the body of the clip is made of pressed sheet metal and further characterised in that the said rolling elements comprise two pairs of rolling elements the axes of the elements of one pair being transversely arranged with respect to the axes of the other pair.
  • the rolling elements are so arranged that they form a configuration whereby the upward or downward movement of the clip body is positively restricted because of their inclined positions.
  • These elements could be arranged in a V configuration, preferably right­angled or they can also be so aranged that their axes cross each other, preferably at right-angles.
  • the clip body of the stenter clip is preferably manufac- tured out of stainless steel pressed components.
  • the total assembly height of the conveying mechanism preferably does not exceed 50 mm, so that the air can be spaced at a vertical distance of 60 mm.
  • Each stenter clip may be provided with four rolling elements each of which preferably incorporates ball bearings.
  • the axes of the rolling elements are preferably located at 45° to the vertical whereby they form a V-configuration which when properly located in the chain rail guide of a stenter, provides a proper rolling surface eliminating the need for a resting surface.
  • the group of these four rolling elements is so arranged that the entire clip body assembly is carried by this group of rolling elements providing a floating arrangement and the weight of the clip is borne by the four elements.
  • the inclined mounting of the elements help in preventing the movement of the clip in any direction except in the direction of the movement of the fabric.
  • a stenter clip wherein the clip body is made from a pressed sheet metal (e.g. stainless steel) with a V-bend in the middle and a projection at the rear adapted for fixing the conveyor roller chain, and another projection in the front adapted to mount thereon the clip-gate carrier also made of pressed sheet metal (e.g. stain- less steel), the V bend adapted to hold two pairs of ball bearings, one pair on each arm of the V-bend, a stainless steel table plate for receiving the clip-gate which can hold the fabric by wedge action during the clip operation of the stenter and alternatively or in addition, a lug made of pressed metal sheet (e.g. stainless steel) to carry the pin-bar and the pin lock assemblies for holding the fabric on pins during the pin operations on the stenter.
  • a pressed sheet metal e.g. stainless steel
  • the chain guide rails of the stenter should be adapted to suit the requirement of the clip of this invention to provide a channel having two guide surfaces between which the respective rolling elements can move.
  • the guide rails may comprise a channel pressed out of sheet metal (e.g. mild steel) that guide the rolling elements in both the forward and return passage of the clips within the stenter.
  • the pressed sheet metal channels may be clamped between two pressed metal parts of generally Z-shaped section to hold them steady in the stenter.
  • the axes of the four rolling elements are preferably so arranged as to form a cross configuration whereby the total widthwise space required for the guiding chain rail could be considerably reduced.
  • the rolling elements are preferably arranged at 45° for simplicity of manufacture, they could also be arranged at any other inclination including vertical and horizontal without in any way affecting the performance.
  • Figure 1 shows schematically in a vertical section the assembly of a blower 1, radiator 2, tapering nozzle 3, and the fabric 4 held between clips 5 (shown symbolically).
  • the tapering nozzles 3 each have two longitudinal slits for discharging hot air/steam on the running fabric 4.
  • the walls, the ceiling and the floor of the stenter in the corresponding section are indicated by the numeral 6.
  • FIG II shows a side elevation of a clip 5 located between the tapering nozzles 3.
  • the numeral 7 indicates a casting holding a clip gate 7.1, a clip gate pin 7.2, a knife edge 7.3 and table plate 7.4.
  • the clip holds the fabric between the knife edge 7.3 and table plate 7.4 or in pins 7.51 of a pin bar 7.5 with pins 7.61 of a pin lock 7.6 preventing the fabric from leaving the pins 7.51 of the pin bar 7.5.
  • the pin lock 7.6 is described in published British Patent Application No. 2140838.
  • 10 indicates a bolt for locking a rolling element or bearing 11 by nut 10.1 to the clip body 7.
  • 10.2 indicates a roller chain for conveying the entire assembly through the chambers of the stenter.
  • the roller chain 10.2 is an endless chain moving under an independent drive from an electric motor (not shown).
  • the clip body casting 7 is mounted on the roller chain 10.2 which is guided by bearing 11 in the track 8 when the roller chain is in motion.
  • 9 indicates graphite impregnated slide rails which are mounted on a track 8.
  • the clip body 7 rests on slide rails 9 when it is being conveyed through the chambers.
  • Nozzles 3 are located above and below chain rails 8 leaving a gap of about 5 to 10 mm to facilitate the adjustment of rails to suit the width of the textile fabric being processed.
  • the vertical distance between the fabric 4 and the nozzle 3 is governed by the total height of the chain rail 8 and the gap between the nozzle 3 and chain rail 8. It is an object of this invention to reduce this vertical distance.
  • Figure III illustrates this invention and shows in a vertical sectional view, an assembly similar to that shown in Figure I with the distance between the hot air/steam jet nozzles 3 substantially reduced.
  • the locations of the upper and the lower housings 3.1 of the jet nozzles are not disturbed but they are extended so that the jets are brought nearer to the fabric so that jets of hot air/steam at higher pressure impinge on the fabric from above and below.
  • the numerals 5.1 indicate symbolically the proposed clip rail assembly.
  • Figure IV shows in a vertical sectional view the proposed chain rail assembly for one edge of the fabric. There is a corres- ponding chain rail assembly for the other edge.
  • FIG V shows in vertical section an enlarged view of one half of the proposed chain rail assembly of Figure IV.
  • the numerals 12 indicate the clip body formed from sheet metal and provided in its central area with a V-bend 12.1 on the arms of which rolling bearings 11.1 are mounted; a projection 12.2 at the rear allows for attachment of a roller chain 18; a right-­angled bend 12.3 at the front of the clipboardy is for mounting a clip gate carrier 17 formed from sheet metal, another projection 12.4 at the front is for mounting a lug 16 also formed from sheet metal and another projection 12.5 also at the front is for mounting a stainless steel table plate 22.
  • a clip gate 21.1 is mounted on the clip gate carrier 17 by a clip gate pin 21.2.
  • the numerals 21.3 indicates the knife edge of clip gate 21.1.
  • Table plate 22 is mounted on front projection 12.5 of the clip body 12.
  • a pin bar carrier 19 and a pin lock carrier 20 are mounted on the lug 16 by a fulcrum pin 23.
  • the numeral 7.5 indicates a pin bar with one or two rows of sharp pins 7.51 which is mounted on pin bar carrier 19 by screws (not shown).
  • a pin lock 7.6 with pins 7.61 is mounted on pin lock carrier 20 by screws (not shown).
  • the edge of fabric 4 can either be held by wedge action between the knife edge 21.3 of clip gate 21.1 and the table plate 22 or in the pins 7.51 of the pin bar 7.5 and locked by pins 7.61 of pin lock 7.6.
  • the bearings 11.1 are mounted on the V bend 12.1 of the clip body 12 by bolt 15 and nuts (not shown).
  • the numerals 13 and 14 indicate brackets formed from sheet metal for strengthening the sheet metal forming the V bend 12.1 and are fixed to it along the bearings 11.1 by bolt 15.
  • Figure IV shows two assemblies of complete clip 12, channels 24 and 25 and Z section 27 mounted in a common channel 26. One assembly is for the forward passage of the clip while the other is for the return passage of the clip.
  • Figure IV shows the complete assembly of a chain rail 5.1 of Figure III as required for conveying one edge of fabric web 4. Two such assemblies are required for conveying both the edges of fabric 4 as shown symboli- cally in Figure III by the numeral 5.1.
  • the V-bend 12.1 could be replaced by a flat plate provided with two cantilever arms punched out of the flat plate.
  • the arms are bent down at angle of 45° to the horizontal and the bearings 11.1 are fixed to the arms, preferably with strengthening plates and nuts and bolts.
  • This embodiment has not been illustrated as the illustration would be very similar to the illustration of Figure V.
  • the foregoing invention can be used on any type of stenter which employs a clip-assembly for conveying fabric through chambers of the stenter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP86306462A 1985-09-02 1986-08-20 Spannklemmen Withdrawn EP0219941A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08521769A GB2169625A (en) 1985-01-11 1985-09-02 Stenter clips
GB8521769 1985-09-02

Publications (1)

Publication Number Publication Date
EP0219941A1 true EP0219941A1 (de) 1987-04-29

Family

ID=10584588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86306462A Withdrawn EP0219941A1 (de) 1985-09-02 1986-08-20 Spannklemmen

Country Status (1)

Country Link
EP (1) EP0219941A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560941A (zh) * 2012-02-08 2012-07-11 江苏小太阳机械科技有限公司 一种改进的分体式布铗
CN103526497A (zh) * 2013-09-24 2014-01-22 江苏小太阳机械科技有限公司 一种刀口板一体成型布铗
CN103590213A (zh) * 2013-09-24 2014-02-19 江苏小太阳机械科技有限公司 一种铜刀铗
CN104131433B (zh) * 2014-07-14 2016-04-06 江苏小太阳机械科技有限公司 一种改进的耐磨布铗

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1067872A (en) * 1964-07-03 1967-05-03 Bakelite Xylonite Ltd Improvements in and relating to gripping devices
US3457608A (en) * 1965-09-15 1969-07-29 Dornier Gmbh Lindauer Chain track assembly for tenter clips
GB2148960A (en) * 1983-10-28 1985-06-05 Krantz H Gmbh & Co A profile for guidance and support of a tentering frame chain

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1067872A (en) * 1964-07-03 1967-05-03 Bakelite Xylonite Ltd Improvements in and relating to gripping devices
US3457608A (en) * 1965-09-15 1969-07-29 Dornier Gmbh Lindauer Chain track assembly for tenter clips
GB2148960A (en) * 1983-10-28 1985-06-05 Krantz H Gmbh & Co A profile for guidance and support of a tentering frame chain

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560941A (zh) * 2012-02-08 2012-07-11 江苏小太阳机械科技有限公司 一种改进的分体式布铗
CN103526497A (zh) * 2013-09-24 2014-01-22 江苏小太阳机械科技有限公司 一种刀口板一体成型布铗
CN103590213A (zh) * 2013-09-24 2014-02-19 江苏小太阳机械科技有限公司 一种铜刀铗
CN103590213B (zh) * 2013-09-24 2015-09-16 江苏小太阳机械科技有限公司 一种铜刀铗
CN104131433B (zh) * 2014-07-14 2016-04-06 江苏小太阳机械科技有限公司 一种改进的耐磨布铗

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Inventor name: APTE, VASANT VYANKATESH