WO2020225624A1 - Device and method for measuring the weight of waste of a textile processing for spinning preparation - Google Patents

Device and method for measuring the weight of waste of a textile processing for spinning preparation Download PDF

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Publication number
WO2020225624A1
WO2020225624A1 PCT/IB2020/053603 IB2020053603W WO2020225624A1 WO 2020225624 A1 WO2020225624 A1 WO 2020225624A1 IB 2020053603 W IB2020053603 W IB 2020053603W WO 2020225624 A1 WO2020225624 A1 WO 2020225624A1
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WO
WIPO (PCT)
Prior art keywords
scrap
measuring device
collection
air stream
conduit
Prior art date
Application number
PCT/IB2020/053603
Other languages
French (fr)
Inventor
Matteo GIAVARINI
Original Assignee
MARZOLI MACHINES TEXTILE S.r.l.
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 MARZOLI MACHINES TEXTILE S.r.l. filed Critical MARZOLI MACHINES TEXTILE S.r.l.
Priority to CN202080034282.0A priority Critical patent/CN113795618B/en
Priority to EP20723938.5A priority patent/EP3966374B1/en
Publication of WO2020225624A1 publication Critical patent/WO2020225624A1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/006—On-line measurement and recording of process and product parameters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices

Definitions

  • the present invention relates to the field of measuring devices for fiber processing lines for spinning preparation, and in particular to a device for measuring the weight of the scraps resulting from processing.
  • a carding process is provided by carding machines, following which the fiber appears in the form of a web.
  • the web exiting the carding machine is typically subjected to a first drawing in a drawing frame, where several webs are joined.
  • a predefined number of webs generally 24, 28 or 32, enter a drawing-combiner machine to create the sliver which will be processed in a combing machine, in order to obtain a sliver in which the fibers are highly parallelized and clean.
  • the object of the present invention is to provide a device for measuring the weight of the scraps made during a process.
  • FIG. 1 schematically shows a portion of a layout of a spinning preparation line
  • figure 2 schematically shows a mixer opener of the spinning preparation line and a measuring device according to an embodiment of the present invention
  • FIG. 3a and 3b show the measuring device of figure 2, in a passive or measuring step and in a collection step, respectively;
  • FIG. 4a shows a section of the measuring device in the passive or measuring step
  • figure 4b shows a section of the measuring device during the collection step
  • FIG. 5a schematically shows the measuring device in the passive step
  • - figure 5b schematically shows the measuring device in the collection step
  • FIG. 5c schematically shows the measuring device in the measurement step.
  • measuring device located downstream of a mixer opener; however, the measuring device may be used downstream of any machine of a spinning preparation line, where there is a conduit in which the processing scrap is transported in an air stream.
  • a fiber processing line for spinning preparation comprises a mixing opener 1, for example located upstream of carding machines 2, to which the fiber is sent via a feeding apparatus 4, for example comprising a dust collector 6 and a motor fan 8.
  • the mixing opener 1 comprises a main conduit 10 for the transport of the processed fibers in the opener itself, transported in an air stream, and at least one scrap conduit 12 for the transport of the processing scrap in an air stream.
  • said mixer opener 1 comprises two scrap conduit sections 14, 16 which come out of the machine casing and converge into a single scrap conduit 12.
  • a measuring device 20 comprises said scrap conduit 12 and operates by intercepting the air stream with scrap.
  • the scrap conduit 12 comprises a picking portion 22 from which it is possible to pick a quantity of scrap Q and separate it from the air stream, preferably picking it outside the scrap conduit 12.
  • said picking portion 22 consists of an interruption of the scrap conduit 12, which divides it into an upstream section 12a, upstream of the interruption according to the direction of advancement of the scrap in the air stream, and a downstream section 12b, downstream of the interruption.
  • the measuring device 20 also comprises restoration means suitable, in a restoration configuration, for ensuring functional continuity between the upstream section 12a and the downstream section 12b of the scrap conduit 12.
  • the restoration means comprise a fitting 24, for example consisting of a cylindrical wall, suitable for restoring continuity between the upstream section 12a and the downstream section 12b of the scrap conduit 12, at the interruption.
  • the measuring device 20 further comprises collection means 30 suitable, in a collection configuration, for intercepting the air stream with scrap coming from the upstream section 12a, collecting a quantity of scrap Q and conveying the air stream into the downstream section 12b.
  • said collection means 30 comprise filtering means 32 for air passage, for example comprising a filter or a grid, suitable for intercepting the air stream with scrap and for retaining a quantity Q of scrap, while the air stream d is allowed to pass.
  • filtering means 32 for air passage for example comprising a filter or a grid, suitable for intercepting the air stream with scrap and for retaining a quantity Q of scrap, while the air stream d is allowed to pass.
  • said collection means 30 further comprise an annular collection wall 34, downstream of which, connected thereto, are said filtering means.
  • the collection wall 34 is suitable for restoring the functional continuity of the scrap conduit 12, being in the interruption between the upstream section 12a and the downstream section 12b.
  • the collection wall 34 and the filtering means 32 provide an example of a collector 36 of the measuring device 20.
  • the measuring device 20 comprises a movable drawer 40, which carries the fitting 24 and the collector 36, so as to alternatively bring them to engage the picking portion 22 of the scrap conduit 12.
  • said drawer 40 is operatively connected to actuation means, for example pneumatic or electric, capable of moving the drawer 40, for example in translation .
  • actuation means for example pneumatic or electric
  • the fitting 24, and more generally the restoration means is engaged with the scrap conduit 12; in said step, the fitting 24 restores the functional continuity between the upstream section 12a and the downstream section 12b of the scrap conduit 12, so that the air stream with scrap flows without disturbance, for example towards a scrap storage.
  • the collector 36 and more generally the collection means 30, is disengaged from the scrap conduit 12 and is for example in a passive position.
  • the fitting 24, and more generally the restoration means is disengaged from the scrap conduit 12, for example in a stand-by position Ph, while the collector 36, and more generally the collection means 30, is engaged with the scrap conduit 12, in a picking position, so as to intercept the air stream with the scrap.
  • the collection means 30 collect a quantity of scrap Q; for example, the filtering means 32 intercept the air stream with the scrap, allow the air to pass but retain the scrap.
  • a timer detects the persistence time of the collection means in the picking position.
  • the transition from the passive step to the collection step occurs by related movement of the collection means 30 and of the restoration means, i.e. of the fitting 24 and of the collector 36, for example by activating the actuation means of the drawer 40.
  • the collector 36 In a subsequent measurement step (figure 3a, 4a and 5c) , the collector 36, and more generally the collection means, is disengaged from the scrap conduit 12, for example in an unloading position Ps, for example coinciding with the passive position taken by the collector in the passive step.
  • the fitting 24, and more generally the restoration means is engaged with the scrap conduit 12, so as to restore functional continuity.
  • the measuring device 20 provides a measuring unit 50 suitable for detecting the weight of the scrap Q collected by the collector 36.
  • the measuring unit 50 comprises a scale 52 and a cup 54, into which the scrap Q collected by the collection means 30 is discharged, for example by the collector 36.
  • the collection means 30 are suitable for releasing the scrap Q to the measuring means by free fall or blowing means 80 cooperating with the collection means 30 to release the scrap Q to the measuring means by means of an air stream.
  • the scrap Q passes from the collector 36 to the cup 54 by free fall or by pneumatic aid, for example by actuating blowing means 80.
  • the scale 52 is suitable for detecting the weight of the scrap Q and for displaying locally the data corresponding to the measurement made or for transmitting this data remotely.
  • the measuring device 20 comprises a support structure 60 for supporting the drawer 40 at a predefined height and for supporting the measuring unit 50 in the discharge position of the scrap Q.
  • the measuring device cooperates with a display unit 70, comprising a video camera 72 and a window 74 formed through the wall of the scrap conduit 12, suitable for acquiring images of the air stream with scraps and sending them to a processing unit (not shown) for the recognition of the type of scrap present in the air stream.
  • a display unit 70 comprising a video camera 72 and a window 74 formed through the wall of the scrap conduit 12, suitable for acquiring images of the air stream with scraps and sending them to a processing unit (not shown) for the recognition of the type of scrap present in the air stream.
  • the measuring device may be used in combination with an opener or with a carding machine of the spinning preparation line.
  • the picking of the scrap takes place by means of a temporary deviation of the air stream which transports the scrap from the scrap conduit 12, towards a collector.
  • the present invention relates to a method for measuring the weight of the scrap Q coming from the fiber processing for spinning preparation and transported in the air stream.
  • the method comprises:

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

A measuring device (20) for a fiber processing line for spinning preparation comprising a scrap conduit (12), restoration means, collection means (30) and a measuring unit (50) suitable for measuring the weight of the scrap (Q), cooperating, in a measurement configuration of the measuring device, with the collection means (30) for receiving the collected scrap (Q).

Description

"DEVICE AND METHOD FOR MEASURING THE WEIGHT OF WASTE OF A TEXTILE PROCESSING FOR SPINNING PREPARATION"
DESCRIPTION
[0001] The present invention relates to the field of measuring devices for fiber processing lines for spinning preparation, and in particular to a device for measuring the weight of the scraps resulting from processing.
[0002] In a fiber processing line for spinning preparation, the initial steps are dedicated to opening and cleaning the fiber; subsequently, a carding process is provided by carding machines, following which the fiber appears in the form of a web. The web exiting the carding machine is typically subjected to a first drawing in a drawing frame, where several webs are joined. A predefined number of webs, generally 24, 28 or 32, enter a drawing-combiner machine to create the sliver which will be processed in a combing machine, in order to obtain a sliver in which the fibers are highly parallelized and clean.
[0003] In the field, there is a great need to quantitatively define the extent of the scrap made during the various processes, especially during the initial steps of opening and cleaning, during which the extent of the scrap is more relevant, in order to optimize the production according to the scrap of the raw material supplied by the various suppliers. [0004] The object of the present invention is to provide a device for measuring the weight of the scraps made during a process.
[0005] Such an object is achieved by a measuring device according to claim 1. The dependent claims describe further advantageous embodiments of the invention.
[0006] The features and the advantages of the measuring device according to the present invention will appear more clearly from the following description, made by way of an indicative and non-limiting example with reference to the accompanying figures, in which:
- figure 1 schematically shows a portion of a layout of a spinning preparation line;
figure 2 schematically shows a mixer opener of the spinning preparation line and a measuring device according to an embodiment of the present invention;
- figures 3a and 3b show the measuring device of figure 2, in a passive or measuring step and in a collection step, respectively;
- figure 4a shows a section of the measuring device in the passive or measuring step;
figure 4b shows a section of the measuring device during the collection step;
- figure 5a schematically shows the measuring device in the passive step; - figure 5b schematically shows the measuring device in the collection step;
- figure 5c schematically shows the measuring device in the measurement step.
[0007] For the sake of clarity, explicit reference will be made below to a measuring device located downstream of a mixer opener; however, the measuring device may be used downstream of any machine of a spinning preparation line, where there is a conduit in which the processing scrap is transported in an air stream.
[0008] For example, a fiber processing line for spinning preparation comprises a mixing opener 1, for example located upstream of carding machines 2, to which the fiber is sent via a feeding apparatus 4, for example comprising a dust collector 6 and a motor fan 8.
[0009] The mixing opener 1 comprises a main conduit 10 for the transport of the processed fibers in the opener itself, transported in an air stream, and at least one scrap conduit 12 for the transport of the processing scrap in an air stream.
[0010] For example, said mixer opener 1 comprises two scrap conduit sections 14, 16 which come out of the machine casing and converge into a single scrap conduit 12.
[0011] According to the invention, a measuring device 20 comprises said scrap conduit 12 and operates by intercepting the air stream with scrap.
[0012] According to a preferred embodiment, the scrap conduit 12 comprises a picking portion 22 from which it is possible to pick a quantity of scrap Q and separate it from the air stream, preferably picking it outside the scrap conduit 12.
[0013] For example, said picking portion 22 consists of an interruption of the scrap conduit 12, which divides it into an upstream section 12a, upstream of the interruption according to the direction of advancement of the scrap in the air stream, and a downstream section 12b, downstream of the interruption.
[0014] The measuring device 20 also comprises restoration means suitable, in a restoration configuration, for ensuring functional continuity between the upstream section 12a and the downstream section 12b of the scrap conduit 12.
[0015] Preferably, the restoration means comprise a fitting 24, for example consisting of a cylindrical wall, suitable for restoring continuity between the upstream section 12a and the downstream section 12b of the scrap conduit 12, at the interruption.
[0016] The measuring device 20 further comprises collection means 30 suitable, in a collection configuration, for intercepting the air stream with scrap coming from the upstream section 12a, collecting a quantity of scrap Q and conveying the air stream into the downstream section 12b.
[0017] According to an exemplary embodiment, said collection means 30 comprise filtering means 32 for air passage, for example comprising a filter or a grid, suitable for intercepting the air stream with scrap and for retaining a quantity Q of scrap, while the air stream d is allowed to pass.
[0018] Preferably, said collection means 30 further comprise an annular collection wall 34, downstream of which, connected thereto, are said filtering means. The collection wall 34 is suitable for restoring the functional continuity of the scrap conduit 12, being in the interruption between the upstream section 12a and the downstream section 12b.
[0019] The collection wall 34 and the filtering means 32 provide an example of a collector 36 of the measuring device 20.
[0020] Preferably, moreover, the measuring device 20 comprises a movable drawer 40, which carries the fitting 24 and the collector 36, so as to alternatively bring them to engage the picking portion 22 of the scrap conduit 12.
[0021] For example, said drawer 40 is operatively connected to actuation means, for example pneumatic or electric, capable of moving the drawer 40, for example in translation .
[0022] During a passive step of the operation of the measuring device (figure 3a, 4a and 5a), the fitting 24, and more generally the restoration means, is engaged with the scrap conduit 12; in said step, the fitting 24 restores the functional continuity between the upstream section 12a and the downstream section 12b of the scrap conduit 12, so that the air stream with scrap flows without disturbance, for example towards a scrap storage.
[0023] In this step, the collector 36, and more generally the collection means 30, is disengaged from the scrap conduit 12 and is for example in a passive position.
[0024] In a collecting step of the operation of the measuring device (figure 3b, 4b and 5b), the fitting 24, and more generally the restoration means, is disengaged from the scrap conduit 12, for example in a stand-by position Ph, while the collector 36, and more generally the collection means 30, is engaged with the scrap conduit 12, in a picking position, so as to intercept the air stream with the scrap.
[0025] In such a picking position, the collection means 30 collect a quantity of scrap Q; for example, the filtering means 32 intercept the air stream with the scrap, allow the air to pass but retain the scrap.
[0026] Preferably, a timer detects the persistence time of the collection means in the picking position.
[0027] The transition from the passive step to the collection step occurs by related movement of the collection means 30 and of the restoration means, i.e. of the fitting 24 and of the collector 36, for example by activating the actuation means of the drawer 40.
[0028] In a subsequent measurement step (figure 3a, 4a and 5c) , the collector 36, and more generally the collection means, is disengaged from the scrap conduit 12, for example in an unloading position Ps, for example coinciding with the passive position taken by the collector in the passive step.
[0029] In said measurement step, the fitting 24, and more generally the restoration means, is engaged with the scrap conduit 12, so as to restore functional continuity.
[0030] At the discharge position Ps of the collector 36, the measuring device 20 provides a measuring unit 50 suitable for detecting the weight of the scrap Q collected by the collector 36.
[0031] For example, the measuring unit 50 comprises a scale 52 and a cup 54, into which the scrap Q collected by the collection means 30 is discharged, for example by the collector 36. [0032] Furthermore, the collection means 30 are suitable for releasing the scrap Q to the measuring means by free fall or blowing means 80 cooperating with the collection means 30 to release the scrap Q to the measuring means by means of an air stream. In particular, the scrap Q passes from the collector 36 to the cup 54 by free fall or by pneumatic aid, for example by actuating blowing means 80.
[0033] The scale 52 is suitable for detecting the weight of the scrap Q and for displaying locally the data corresponding to the measurement made or for transmitting this data remotely.
[0034] By combining the data relating to the weight of the scrap Q collected with the persistence time of the measuring device during the collection step (data provided by the timer) , as well as with the data relating to the origin of the raw material and the flow rate of the fiber processed in the mixer opener, it is possible to characterize the raw material and obtain data for a reliable production forecast.
[0035] Furthermore, according to an embodiment, the measuring device 20 comprises a support structure 60 for supporting the drawer 40 at a predefined height and for supporting the measuring unit 50 in the discharge position of the scrap Q.
[0036] Furthermore, according to a preferred embodiment, the measuring device cooperates with a display unit 70, comprising a video camera 72 and a window 74 formed through the wall of the scrap conduit 12, suitable for acquiring images of the air stream with scraps and sending them to a processing unit (not shown) for the recognition of the type of scrap present in the air stream.
[0037] According to further embodiments of the invention, the measuring device may be used in combination with an opener or with a carding machine of the spinning preparation line.
[0038] According to further embodiments of the invention, the picking of the scrap takes place by means of a temporary deviation of the air stream which transports the scrap from the scrap conduit 12, towards a collector.
[0039] Furthermore, the present invention relates to a method for measuring the weight of the scrap Q coming from the fiber processing for spinning preparation and transported in the air stream.
[0040] The method comprises:
a collection step in which the collection means 30 intercept the air stream which transports the scrap and collects a quantity of scrap Q;
- an extraction step in which said quantity of scrap Q is carried out of the air stream and taken to the measuring unit 50 suitable for detecting the weight thereof;
a measurement step in which the measuring unit 50 performs a measurement of the weight of the quantity of scrap Q.
[0041] It is clear that a person skilled in the art may make changes to the measuring device described above in order to meet incidental needs, all falling within the scope of protection defined in the following claims.

Claims

Claims
1. Measuring device (20) for a fiber processing line for spinning preparation, comprising:
- a scrap conduit (12) suitable for the transit of an air stream with scrap in which processing scraps are transported, provided with a picking portion (22) for picking a quantity of scrap (Q) , with respect to which an upstream section (12a) and a downstream section (12b) of the scrap conduit (12) are defined;
- restoration means suitable, in a passive configuration of the measuring device, for ensuring the functional continuity between the upstream section (12a) and the downstream section (12b) of the scrap conduit (12);
collection means (30) suitable, in a collection configuration of the measuring device, for intercepting the air stream with scraps from the upstream section (12a), collecting a quantity of scrap (Q) and conveying the air current in the downstream section (12b);
- a measuring unit (50) suitable for measuring the weight of the scrap (Q) , cooperating, in a measurement configuration of the measuring device, with said collection means (30) for receiving the collected scrap (Q) ,
wherein said picking portion (22) is an interruption between the upstream section (12a) and the downstream section (12b) of the scrap conduit (12) and said restoration means comprise a fitting (24) suitable for restoring the functional continuity between the upstream section (12a) and the downstream section (12b) of the scrap conduit (12) .
2. Measuring device according to claim 1, wherein the measuring unit (50) comprises a scale (52) suitable for locally displaying the weight of the scrap (Q) or for remotely transmitting a data corresponding to said weight.
3. Measuring device according to any one of the preceding claims, wherein the collection means (30) comprise filtering means (32) for air passage suitable for intercepting the air stream with scrap and retaining said quantity (Q) of scrap while the air stream is allowed to pass .
4. Measuring device according to claim 3, wherein said collection means (30) comprise an annular collection wall (34), downstream of which, connected thereto, are said filtering means (32), wherein said collection wall (34) is suitable for restoring the functional continuity of the scrap conduit (12), said collection wall (34) and said filtering means (32), forming together a collector
(36) .
5. Measuring device according to claim 4, comprising actuation means, for example pneumatic or electric, for the passage of said collection means (30) from the collection configuration to the measurement configuration and vice versa.
6. Measuring device according to any one of the preceding claims, wherein, when the collection means (30) are in the measurement configuration, the restoration means are in the passive configuration.
7. Measuring device according to any one of the preceding claims, wherein, when the collection means (30) are suitable for releasing the scrap (Q) to the measuring means by free fall.
8. Measuring device according to any one of the preceding claims, comprising blowing means (80) cooperating with the collection means (30) for releasing the scrap (Q) to the measuring means by means of an air stream.
9. Analysis device comprising:
a measurement device according to any one of the preceding claims; and
- a display unit (70), comprising a video camera (72) and a window (74) formed through a side wall of the scrap conduit (12), suitable for acquiring images of the air stream with scraps and send them to a processing unit for the recognition of the type of scrap present in the air stream.
10. Fiber processing apparatus for a spinning preparation line, comprising:
- a textile machine (1) provided with a main conduit (10) for transporting the processed fiber in an air stream; - a measuring device (20) according to any one of claims
1 to 8 or an analysis device according to claim 9, wherein the scrap conduit (12) is connected to the textile machine for transporting the scrap in an air stream.
11. Processing apparatus according to claim 10, wherein the textile machine is a mixer opener (1) or an opener or a carding machine (2) .
PCT/IB2020/053603 2019-05-09 2020-04-16 Device and method for measuring the weight of waste of a textile processing for spinning preparation WO2020225624A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080034282.0A CN113795618B (en) 2019-05-09 2020-04-16 Device and method for measuring the weight of textile processing waste for spinning preparation
EP20723938.5A EP3966374B1 (en) 2019-05-09 2020-04-16 Device for measuring the weight of waste in a fiber processing line for spinning preparation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000006671A IT201900006671A1 (en) 2019-05-09 2019-05-09 DEVICE AND METHOD FOR MEASURING THE WEIGHT OF WASTE OF A TEXTILE PROCESSING FOR THE PREPARATION FOR SPINNING
IT102019000006671 2019-05-09

Publications (1)

Publication Number Publication Date
WO2020225624A1 true WO2020225624A1 (en) 2020-11-12

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EP (1) EP3966374B1 (en)
CN (1) CN113795618B (en)
IT (1) IT201900006671A1 (en)
WO (1) WO2020225624A1 (en)

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WO1996011292A2 (en) * 1994-10-10 1996-04-18 Carding Specialists (Canada) Limited Card waste monitoring
US20020152584A1 (en) * 2001-02-16 2002-10-24 Achim Breuer Device and method for detecting lightweight waste in a carding machine
US6477741B2 (en) * 2000-12-21 2002-11-12 TRüTZSCHLER GMBH & CO. KG Apparatus for detecting separated waste in a fiber processing machine
WO2005010248A1 (en) * 2003-07-31 2005-02-03 Maschinenfabrik Rieter Ag Sample-taking device

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EP0408491A1 (en) * 1989-07-12 1991-01-16 Maschinenfabrik Rieter Ag Method and apparatus for removing the waste in a fibre cleaning machine
US5321496A (en) * 1990-03-14 1994-06-14 Zellweger Uster, Inc. Apparatus for monitoring trash in a fiber sample
DE10311345A1 (en) * 2003-03-14 2004-09-23 Trützschler GmbH & Co KG Device for determining the fiber lengths and the fiber length distribution on a fiber material sample, in particular in spinning preparation
DE102007005049A1 (en) * 2007-01-26 2008-07-31 TRüTZSCHLER GMBH & CO. KG Apparatus in the spinning preparation for depositing foreign matter on a conveyor for fibrous material, e.g. Cotton, chemical fibers or the like
ITUB20155431A1 (en) * 2015-11-10 2017-05-10 Savio Macch Tessili Spa SUCTION SYSTEM FOR A TEXTILE MACHINE AND TEXTILE MACHINE INCLUDING THE SUCTION SYSTEM
CN205856694U (en) * 2016-08-06 2017-01-04 温州新宇无纺布有限公司 A kind of carding machine waste material collection device

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Publication number Priority date Publication date Assignee Title
DE4033427A1 (en) * 1990-10-20 1992-04-23 Truetzschler & Co Weighing device for trash samples - separates sample from conveying air and provides signal for plant control
WO1996011292A2 (en) * 1994-10-10 1996-04-18 Carding Specialists (Canada) Limited Card waste monitoring
US6477741B2 (en) * 2000-12-21 2002-11-12 TRüTZSCHLER GMBH & CO. KG Apparatus for detecting separated waste in a fiber processing machine
US20020152584A1 (en) * 2001-02-16 2002-10-24 Achim Breuer Device and method for detecting lightweight waste in a carding machine
WO2005010248A1 (en) * 2003-07-31 2005-02-03 Maschinenfabrik Rieter Ag Sample-taking device

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Publication number Publication date
CN113795618B (en) 2023-04-04
CN113795618A (en) 2021-12-14
EP3966374B1 (en) 2023-07-19
IT201900006671A1 (en) 2020-11-09
EP3966374A1 (en) 2022-03-16

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