EP0270163A2 - Automatic, self-centering straightening machine for a continuous fabric, in particular suitable for being coupled in line with textile finishing machines, or with a printing machine - Google Patents
Automatic, self-centering straightening machine for a continuous fabric, in particular suitable for being coupled in line with textile finishing machines, or with a printing machine Download PDFInfo
- Publication number
- EP0270163A2 EP0270163A2 EP87202216A EP87202216A EP0270163A2 EP 0270163 A2 EP0270163 A2 EP 0270163A2 EP 87202216 A EP87202216 A EP 87202216A EP 87202216 A EP87202216 A EP 87202216A EP 0270163 A2 EP0270163 A2 EP 0270163A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fabric
- framework
- centering
- computer
- machine
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
Definitions
- the present invention relates to an automatic, self-centering straightening machine for a continuous fabric, in particular suitable for being combined in line with textile finishing machines, or with a printing machine.
- Coupling in line with a fabric finishing machine or printing machine, a weft straightener aligned according to the axis of the finishing or printing machine, wherein the fabric unrolled from a feed fabric roll is treated in order to have the picks positioned perpendicularly to the warp threads, or to verify the alignment of the loops, is known.
- correction actions determine the side shifting of the fabric inside the finishing or printing machine which cannot be easily controlled, and involve such an error of treatment or of printing, as to transversely invade, e.g., during the printing process, the selvedges of the same fabric, in a direction, or in the other.
- a purpose of the present invention is to provide an automatic, self-centering straightening machine for a continuous fabric suitable for being coupled in line either with a textile finishing machine, or with a printing machine, and makes it possible both to rapidly carry out the correct positioning, controlled instant by instant, of the fabric, maintaining it in line with the finishing or with the printing, and a correct operating of the straightening unit.
- a further purpose is to be able to operate on a wide range of fabric widths, without being obliged to replace the straightening machine, or to operate and carry out mechanical adjustments of the various components of the straightening unit before beginning the processing, also as a function of the fact that most times it is necessary to process the fabric on the finishing machines, and, above all, on the printing machines, in a out-of-centre position relatively to the axis of the same machines, e.g., to print a trade name on the selvedges.
- an automatic, self-centering straightening machine for a continuous fabric in particular suitable for being coupled in line either with textile finishing machines, or with a printing machine of the type comprising a framework wherein a set of corrector rollers are located, which correct the diagonal, curved or combined deformations of said continuous fabric, driven by driving means operatively connected with a plurality of detection means, for the detection of the position of the picks and/or of the alignment of the loops, characterized in that said machine is provided with means for the transversal translation of the framework relatively to the direction of fabric feed, which are operatively controlled by a computer respectively connected with further detection means for the detection of opposite positions of the ends of the width of the straightened and centered fabric which leaves said set of corrector cylinders, said further detection means being located on opposite sides relatively to a processing axis essentially corresponding to the axis of said machine framework, so that, by means of said translation means, said processing axis is set and positioned on command by
- a self-centering straightening machine is generally indicated by the reference numeral 10, and is arranged to receive a continuous fabric 11, e.g., being unrolled from a roll 12, supported on a fabric roll holder car 47, and to feed it, through return rollers 13, to a printing machine 14, or to another textile finishing machine, such as a raising machine, and so forth, partially shown in Figures 1 and 3.
- the centering device 17 is constituted by three rollers 18 on board of swinging side support rods or shoulders 19, the one of which is hinged in 20 onto the frame 15, and the other one of which is rotatably constrained to the stem of a hydraulic cylinder 21, so to act on the lateral shift on the vertical plane, and to be used for aligning the fabric 11.
- the fabric 11 enters then a straightening unit, generally indicated by the reference number 22, wherein, besides return rollers 9, provided are, e.g., three corrector rollers for the diagonal deformations 23, on board of a swinging frame 25 motor-driven in 26, and two further corrector rollers for the curved deformations 27, individually motor-driven in 28.
- a straightening unit generally indicated by the reference number 22, wherein, besides return rollers 9, provided are, e.g., three corrector rollers for the diagonal deformations 23, on board of a swinging frame 25 motor-driven in 26, and two further corrector rollers for the curved deformations 27, individually motor-driven in 28.
- Said processing axis 35 is independent from the fabric 11 being processed, and exactly as a function of the height, or width, of the fabric, it is located in an out-of-centre position relatively to a central fixed axis 34 of the printing machine 14.
- the framework 15 is mounted on wheels 36 running along tracks 37, said tracks 37 being also located transversely relatively to the fabric feed direction 11, and being constrained to a baseplate, or to the floor, indicated by the reference numeral 38; the framework 15 interacts with, and is moved by a translational drive means 39, such as a hydraulic cylinder.
- the straightening machine 10 can hence be shifted relatively to the printing machine 14, in relation to the width of the fabric 11 which is being processed.
- a central computer 40 is equipped with a control keyboard 41, and is operatively connected with a related display screen 42. Said central computer 40 results furthermore to be operatively connected, through a set of connection leads, with said hydraulic translational drive means 39, which is provided with a shift control element 43, such as an encoder, interacting relatively to a starting stop 44, in correspondence of which the machine according to the invention processes a fabric having the maximum width.
- a shift control element 43 such as an encoder
- a microprocessor 45 is connected, which is associated with the reading heads 29, and with the drive means 26 and 28 of the corrector rollers 23 and 27.
- third detection means 46 are located in correspondence of the centering means 17, so to detect the alignment of the fabric 11 and transmit such information to the central computer 40, so that it can consequently actuate the hydraulic cylinder 21, determining the correction.
- the fabric 11 is thus located out-of-center inside the printing machine 14, and is positioned with an edge thereof nearly in correspondence with the side edge of the same machine. In this position, the further third detection means 46 associated with the centering device 17 detect, and act according to commands coming from the computer 40 to line-up the fabric 11.
- the further detection means 32 and 33 detect the opposite transversal ends of the fabric 11 as said fabric is processed, and can act, always through the computer 40, to modify the position of the framework 15 by means of the hydraulic actuator 39.
- the means act, which detect the position of the picks and/of the alignment of the loops 29-30, and the relevant microprocessor 45.
- the fabric roll holder 47 runs on further tracks, and is rigidly connected with the framework 15, so to be always perfectly aligned, eliminating any further initial adjustment and positioning of the fabric roll holder 47 relatively to the fixed positions 48.
Landscapes
- Treatment Of Fiber Materials (AREA)
- Screen Printers (AREA)
Abstract
Description
- The present invention relates to an automatic, self-centering straightening machine for a continuous fabric, in particular suitable for being combined in line with textile finishing machines, or with a printing machine.
- Coupling in line with a fabric finishing machine or printing machine, a weft straightener aligned according to the axis of the finishing or printing machine, wherein the fabric unrolled from a feed fabric roll is treated in order to have the picks positioned perpendicularly to the warp threads, or to verify the alignment of the loops, is known.
- These correction actions determine the side shifting of the fabric inside the finishing or printing machine which cannot be easily controlled, and involve such an error of treatment or of printing, as to transversely invade, e.g., during the printing process, the selvedges of the same fabric, in a direction, or in the other.
- The presently feasible correction interventions allow an adjustment, or registering, of such errors to be achieved only after a certain time period, with a considerable waste of fabric, and not always do they reach the prefixed aim, because the corrections which can be carried out show a poor precision.
- A purpose of the present invention is to provide an automatic, self-centering straightening machine for a continuous fabric suitable for being coupled in line either with a textile finishing machine, or with a printing machine, and makes it possible both to rapidly carry out the correct positioning, controlled instant by instant, of the fabric, maintaining it in line with the finishing or with the printing, and a correct operating of the straightening unit.
- A further purpose is to be able to operate on a wide range of fabric widths, without being obliged to replace the straightening machine, or to operate and carry out mechanical adjustments of the various components of the straightening unit before beginning the processing, also as a function of the fact that most times it is necessary to process the fabric on the finishing machines, and, above all, on the printing machines, in a out-of-centre position relatively to the axis of the same machines, e.g., to print a trade name on the selvedges.
- These and other purposes according to the present invention are achieved by providing an automatic, self-centering straightening machine for a continuous fabric, in particular suitable for being coupled in line either with textile finishing machines, or with a printing machine of the type comprising a framework wherein a set of corrector rollers are located, which correct the diagonal, curved or combined deformations of said continuous fabric, driven by driving means operatively connected with a plurality of detection means, for the detection of the position of the picks and/or of the alignment of the loops, characterized in that said machine is provided with means for the transversal translation of the framework relatively to the direction of fabric feed, which are operatively controlled by a computer respectively connected with further detection means for the detection of opposite positions of the ends of the width of the straightened and centered fabric which leaves said set of corrector cylinders, said further detection means being located on opposite sides relatively to a processing axis essentially corresponding to the axis of said machine framework, so that, by means of said translation means, said processing axis is set and positioned on command by said computer in a out-of-centre position relatively to the stationary axis of the textile finishing or printing machine as a function of the width of said fabric, and said further detection means act continuously to keep the fabric centered in this new out-of-centre position.
- The structural and functional characteristics and the advantages of an automatic, self-centering straightening machine according to the present invention shall be better understood from the following exemplifying, non-limitative disclosure, referred to the hereto attached drawings, wherein:
- Figure 1 is a schematic, longitudinal, sectional elevation view of an automatic machine according to the invention, positioned upstream the inlet of a partially shown printing machine;
- Figure 2 is a side elevation view of the bottom portion of the machine of Figure 1; and
- Figure 3 is a top plan view of the machine of Figure 1.
- Referring to the figures, a self-centering straightening machine according to the present invention is generally indicated by the
reference numeral 10, and is arranged to receive acontinuous fabric 11, e.g., being unrolled from aroll 12, supported on a fabricroll holder car 47, and to feed it, throughreturn rollers 13, to aprinting machine 14, or to another textile finishing machine, such as a raising machine, and so forth, partially shown in Figures 1 and 3. - The
continuous fabric 11, by unrolling fromroll 12, comes to the true straightening machine, which comprises aframe 15, above which afirst return roller 16 is located, saidfirst return roller 16 being supported inside anentry gantry 24, which feeds the same fabric in a vertical direction, towards an underlying centering device or means 17. - The
centering device 17 is constituted by threerollers 18 on board of swinging side support rods orshoulders 19, the one of which is hinged in 20 onto theframe 15, and the other one of which is rotatably constrained to the stem of ahydraulic cylinder 21, so to act on the lateral shift on the vertical plane, and to be used for aligning thefabric 11. - The
fabric 11 enters then a straightening unit, generally indicated by thereference number 22, wherein, besidesreturn rollers 9, provided are, e.g., three corrector rollers for thediagonal deformations 23, on board of a swingingframe 25 motor-driven in 26, and two further corrector rollers for thecurved deformations 27, individually motor-driven in 28. - A plurality of
optical reading heads 29, and ofrelevant projectors 30, as detector means for the position of the picks, and/or for the alignment of the loops, act on the fabric two by two, from opposite sides, detecting the deformations thereof relatively to the correct positions of the picks, or of the loops. - The
fabric 11, then, by passing into anoutlet calender 31, comes in correspondence of further detector means 32 and 33, detecting the opposite positions of the ends of the width of the straightenedfabric 11 under processing which leaves said straightening unit, which opposite end positions indicate the relative position of the fabric relatively to aprocessing axis 35 corresponding to the axis of theframework 15. - Said
processing axis 35 is independent from thefabric 11 being processed, and exactly as a function of the height, or width, of the fabric, it is located in an out-of-centre position relatively to a centralfixed axis 34 of theprinting machine 14. For the purpose of varying the relative position of theprocessing axis 35, as referred to thefixed machine axis 34, theframework 15 is mounted onwheels 36 running alongtracks 37, saidtracks 37 being also located transversely relatively to thefabric feed direction 11, and being constrained to a baseplate, or to the floor, indicated by thereference numeral 38; theframework 15 interacts with, and is moved by a translational drive means 39, such as a hydraulic cylinder. - The straightening
machine 10 can hence be shifted relatively to theprinting machine 14, in relation to the width of thefabric 11 which is being processed. - A
central computer 40 is equipped with acontrol keyboard 41, and is operatively connected with arelated display screen 42. Saidcentral computer 40 results furthermore to be operatively connected, through a set of connection leads, with said hydraulic translational drive means 39, which is provided with ashift control element 43, such as an encoder, interacting relatively to astarting stop 44, in correspondence of which the machine according to the invention processes a fabric having the maximum width. - In the hereto figures, a machine according to the invention is shown, during the automatic processing of an intermediate-width fabric.
- Furthermore, with said central computer 40 a
microprocessor 45 is connected, which is associated with thereading heads 29, and with the drive means 26 and 28 of thecorrector rollers reference numerals centering means 17, so to detect the alignment of thefabric 11 and transmit such information to thecentral computer 40, so that it can consequently actuate thehydraulic cylinder 21, determining the correction. - In this way, with a machine according to the invention, once that a
roll 12 of fabric to be processed 11, having a determined width, is installed on thefabric roll holder 47, according to predeterminedfixed positions 48 previously defined exactly as a function of the various fabric widths, through thekeyboard 41, thecomputer 40 and the translational drive means 39, the shift is caused of theframework 15, so to position theprocessing axis 35, which is also thefabric axis 11, out-of-centre relatively to thestationary axis 34 of theprinting machine 14. - The
fabric 11 is thus located out-of-center inside theprinting machine 14, and is positioned with an edge thereof nearly in correspondence with the side edge of the same machine. In this position, the further third detection means 46 associated with thecentering device 17 detect, and act according to commands coming from thecomputer 40 to line-up thefabric 11. - Advantageously, also the further detection means 32 and 33 detect the opposite transversal ends of the
fabric 11 as said fabric is processed, and can act, always through thecomputer 40, to modify the position of theframework 15 by means of thehydraulic actuator 39. - Of course, coupled with said detection means 32, 33 and 46, the means act, which detect the position of the picks and/of the alignment of the loops 29-30, and the
relevant microprocessor 45. - Thus, above all at the relatively low speeds at which the printing is carried out, an automatic, out-of-centre control is achieved of the alignment of the fabric inside the same printing machine.
- Thus, it is possible to print, with an extremely high precision, on the selvedge located in correspondence of the side edge of the printing machine. Then, it is furthermore possible, e.g., on the
display screen 42, to continuously identify all of the parameters relating to the fabric being processed, and act, through thecontrol keyboard 41, to correct any possible faulty parameters. - According to a preferred, but not limitative, form of practical embodiment of the present invention, also the
fabric roll holder 47 runs on further tracks, and is rigidly connected with theframework 15, so to be always perfectly aligned, eliminating any further initial adjustment and positioning of thefabric roll holder 47 relatively to thefixed positions 48.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87202216T ATE71917T1 (en) | 1986-12-05 | 1987-11-13 | AUTOMATIC SELF-CENTERING MACHINE FOR ADJUSTING AN ENDLESS WEB, PARTICULARLY SUITED TO COUPLING IN LINE WITH A TEXTILE FINISHING MACHINE OR WITH A PRINTING MACHINE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT22594/86A IT1199707B (en) | 1986-12-05 | 1986-12-05 | AUTOMATIC SELF-CENTERING RECTIFIER MACHINE FOR A CONTINUOUS FABRIC, IN PARTICULAR COMBINABLE IN LINE WITH TEXTILE FINISHING MACHINES OR A PRINTING MACHINE |
IT2259486 | 1986-12-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0270163A2 true EP0270163A2 (en) | 1988-06-08 |
EP0270163A3 EP0270163A3 (en) | 1988-11-23 |
EP0270163B1 EP0270163B1 (en) | 1992-01-22 |
Family
ID=11198238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87202216A Expired EP0270163B1 (en) | 1986-12-05 | 1987-11-13 | Automatic, self-centering straightening machine for a continuous fabric, in particular suitable for being coupled in line with textile finishing machines, or with a printing machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0270163B1 (en) |
AT (1) | ATE71917T1 (en) |
DE (1) | DE3776295D1 (en) |
IT (1) | IT1199707B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110130084A (en) * | 2019-06-13 | 2019-08-16 | 傅林运 | A kind of preceding labelling apparatus of textile cloth cutting |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB937084A (en) * | 1962-02-28 | 1963-09-18 | Irwin Lee Fife | Apparatus for centering a moving web |
US3411683A (en) * | 1966-08-08 | 1968-11-19 | Eastman Kodak Co | Web guiding apparatus |
DE2428113A1 (en) * | 1974-06-11 | 1976-01-02 | Erhardt & Leimer Kg | Material straight edge winding installation - winding roller on an adjustable bearing is controlled by a sensor in contact with material edge |
GB2083798A (en) * | 1980-09-11 | 1982-03-31 | Timsons Ltd | Registration of apparatus handling webs |
US4384686A (en) * | 1981-05-18 | 1983-05-24 | Tex-Fab, Inc. | Centerline web guide apparatus |
EP0084698A1 (en) * | 1982-01-26 | 1983-08-03 | John Henry Morgan | Apparatus for and method of varying the position of an operation performed on an elongate moving element |
US4461431A (en) * | 1981-05-18 | 1984-07-24 | Tex-Fab, Inc. | Edge guide unwinding apparatus |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE768516A (en) * | 1971-06-14 | 1971-11-03 | Mount Hope Machinery Ltd | Web dressing machine - has rollers for correcting - alignment and orientation of knit or weave |
-
1986
- 1986-12-05 IT IT22594/86A patent/IT1199707B/en active
-
1987
- 1987-11-13 AT AT87202216T patent/ATE71917T1/en not_active IP Right Cessation
- 1987-11-13 EP EP87202216A patent/EP0270163B1/en not_active Expired
- 1987-11-13 DE DE8787202216T patent/DE3776295D1/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB937084A (en) * | 1962-02-28 | 1963-09-18 | Irwin Lee Fife | Apparatus for centering a moving web |
US3411683A (en) * | 1966-08-08 | 1968-11-19 | Eastman Kodak Co | Web guiding apparatus |
DE2428113A1 (en) * | 1974-06-11 | 1976-01-02 | Erhardt & Leimer Kg | Material straight edge winding installation - winding roller on an adjustable bearing is controlled by a sensor in contact with material edge |
GB2083798A (en) * | 1980-09-11 | 1982-03-31 | Timsons Ltd | Registration of apparatus handling webs |
US4384686A (en) * | 1981-05-18 | 1983-05-24 | Tex-Fab, Inc. | Centerline web guide apparatus |
US4461431A (en) * | 1981-05-18 | 1984-07-24 | Tex-Fab, Inc. | Edge guide unwinding apparatus |
EP0084698A1 (en) * | 1982-01-26 | 1983-08-03 | John Henry Morgan | Apparatus for and method of varying the position of an operation performed on an elongate moving element |
Also Published As
Publication number | Publication date |
---|---|
EP0270163B1 (en) | 1992-01-22 |
ATE71917T1 (en) | 1992-02-15 |
EP0270163A3 (en) | 1988-11-23 |
DE3776295D1 (en) | 1992-03-05 |
IT1199707B (en) | 1988-12-30 |
IT8622594A0 (en) | 1986-12-05 |
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