CN115726068A - Positioning and centering device, industrial textile machine and related method - Google Patents
Positioning and centering device, industrial textile machine and related method Download PDFInfo
- Publication number
- CN115726068A CN115726068A CN202211043192.5A CN202211043192A CN115726068A CN 115726068 A CN115726068 A CN 115726068A CN 202211043192 A CN202211043192 A CN 202211043192A CN 115726068 A CN115726068 A CN 115726068A
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- Prior art keywords
- service
- centering
- textile machine
- unit
- code
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- 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.)
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- 239000004753 textile Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims description 4
- 238000009987 spinning Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
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
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
- B65H54/26—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores having one or more servicing units moving along a plurality of fixed winding units
-
- 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
- D01H13/005—Service carriages travelling along the machines
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
- D01H9/08—Doffing arrangements independent of spinning or twisting machines
- D01H9/10—Doffing carriages ; Loading carriages with cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
- D01H15/013—Carriages travelling along the machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Industrial textile machine comprising at least two operating units and at least one service trolley for the operating units. The industrial textile machine further comprises a positioning and centering device for positioning and centering the service trolley relative to the operating unit. The positioning and centering device comprises: a password section provided on each operation unit; the optical reader is arranged on the service car and is suitable for reading the password part; and a control unit operatively connected to the optical reader and the drive device. The password section includes: a centering reference for centering the optical reader with respect to the code section; and an identification code of the operation unit, the password section being provided on the operation unit. In accordance with a service request signal from the operating unit, the control unit is adapted to: an operation driving device for moving at least one service cart to the operation unit, wherein the password part comprises an identification code of the operation unit requesting the service; and centering the service cart relative to the operation unit according to the centering reference of the password part.
Description
Technical Field
The invention relates to a positioning and centering device for a service cart (service cart) of a textile machine, a textile machine comprising the device and a method for positioning and centering a service cart in a textile machine.
Background
As is known, industrial textile machines (such as spinning and winding machines) widely use automatic or semi-automatic service trolleys for carrying out technical process operations which would otherwise be carried out manually, for example for doffing or taking-up yarn shafts after a yarn break.
These are extremely complex articulated electromechanical devices which must perform their operating cycle very accurately so as not to affect the productivity of the machine and the quality of the yarn.
In a manner known per se, the unit that is to perform a particular operating cycle sends a signal to the service trolley (or one of the service trolleys) which, after arrival at the unit, places itself in the unit.
In this case, the problem arises of improving the position control of the service trolley, concerning the identification of the unit on which the operating cycle is to be carried out, and concerning the centering of the trolley with respect to this unit.
In this respect, it is known to use a centring device comprising a mechanical system comprising stops, for example electrically or pneumatically operated telescopic rods, arranged on the service trolley, which engage corresponding seats made on the fixed position of the unit. In addition, the device comprises an optical LED positioning system of the transmitter/receiver type, which enables the service trolley to decode the unit identification code, for example its number.
This solution, although widely appreciated and used, has drawbacks, such as: mechanical wear caused by the repeatability of the positioning cycle, dirt generated by the textile environment, and the kinematic characteristics of the centering unit are damaged over time; inaccuracies can arise from elastic deformation of the structure affected by the weight of the service trolley; there is a need for a dedicated drive and associated electrical equipment; and, in the event of inaccurate centering, the drive may be subject to undesirable stresses that follow.
Furthermore, the mechanical centering system cannot be customized for each unit, since it is the same for all units of the same area.
Another known solution again provides an optical communication system between the service trolley and the unit, but the mechanical centering is replaced by a reflective system using reflectors. In this case, however, the function of the optical communication system is particularly impaired by dirt caused by the cellulose deposited thereon, partly or completely covering the reflector.
It is also known to use a laser provided with a service trolley which can read the protrusions of the reference element of the unit, typically a parallelepiped-shaped plastic plate. From the projected multiple point readings, the cart can interpolate to a nominal centering position. The unit number is identified by a radio frequency system, and an antenna on the trolley generates an electric field to excite a circuit of a passive tag arranged on the handpiece.
Finally, optical positioning and centering systems using laser pointers and bar codes are known. The cell number is identified by the number contained in the code and the centering is achieved by two or more barcode subcodes placed in equidistant succession, whereby the nominal centering position is obtained by linear interpolation of the above mentioned sub-positions. However, this solution implies that several subcodes are required to ensure accurate positioning, thereby increasing the footprint of the code.
Disclosure of Invention
Therefore, there is a need to address the mentioned shortcomings and limitations of the prior art.
Therefore, there is a need to provide a device, a textile machine and a method which enable the positioning and centering of a service trolley of the textile machine to be carried out efficiently and accurately.
According to the present application, a positioning and centering device for a service trolley of a textile machine, an industrial textile machine and a method for positioning and centering a service trolley in a textile machine, such a requirement is satisfied.
Positioning and centering device according to an aspect of the present application, for a service trolley of a textile machine comprising at least two operating units, comprising: a password section provided on each of the operation units; the optical reader is arranged on the service trolley and is suitable for reading the password part; and a control unit operatively connected to the optical reader and the drive device. The password section includes: a centering reference for centering the optical reader relative to the cryptographic section; and an identification code of the operation unit on which the password section is provided. In accordance with a service request signal from an operating unit, the control unit is adapted to: operating the drive device to move at least one of the service carts to the operating unit, the cryptographic portion of the operating unit read by the optical reader containing the identification code of the operating unit requesting service; and centering the service cart with respect to the operation unit based on the centering reference of the password section.
Drawings
Other characteristics and advantages of the invention will be more clearly understood from the following description of a preferred and non-limiting embodiment thereof, in which:
fig. 1 schematically shows a textile machine comprising a device for positioning and centering a service trolley according to a possible embodiment of the invention.
Fig. 2 schematically shows a unit of a textile machine comprising a part of a positioning and centering device of a service trolley according to a possible embodiment of the invention.
Fig. 3 schematically shows a unit of textile machine and service trolley comprising a device for positioning and centering the service trolley according to a possible embodiment of the invention.
Figure 4 schematically shows components of a textile machine according to a possible embodiment of the invention.
Common elements or parts of elements in the embodiments described below will be denoted by the same reference numerals.
Detailed Description
In fig. 2 and 3, the reference numeral 20 generally designates a positioning and centering device for the service trolley 16 of the textile machine 12.
Fig. 2 and 3 relate to the operating unit 14 of the winding machine and the associated service trolley 16, in particular a doffer. This reference should not be understood as limiting, but purely as an example, since the principle of the invention can also be applied in the same way to other types of industrial textile machines and other types of service vehicles.
In view of its nature and purpose, the device is suitable for use with a textile machine 12 comprising a plurality of operating units 14.
The positioning and centering device 20 essentially comprises:
a password section 22 provided on each operation unit 14;
an optical scanner 24, provided on the service trolley 16, adapted to scan the password part 22; and
a control unit 26 operatively connected to the optical scanner 24 and the drive device 18.
The password section 22 includes: a centering reference 28 for centering the optical scanner 24 with respect to the code section 22; and an identification code 30 of the operation unit 14, wherein the password portion is provided on the operation unit 14.
In accordance with the service request signal from the operating unit 14, the control unit 26 is adapted to:
operating the drive device 18 to move at least one service trolley 16 to the operating unit 14, wherein the code section 22 of the operating unit 14 read by the optical scanner 24 contains the identification code 30 of the operating unit 14 requesting the service; and
the service vehicle 16 is centered with respect to the operation unit 14 based on the centering reference 28 of the password section 22.
According to one possible embodiment, the code portion 22 may be a QR code (quick response code).
As can be seen in the example of fig. 4, the QR code is a two-dimensional matrix comprising three large squares placed at the three vertices of the matrix, the function of the three large squares being to define the correct alignment of the code with respect to the optical reader (scanner) in terms of direction and angle during reading.
The QR code also includes a plurality of black and white pixels within the main square that contain and synthesize all information.
It is known that to access the content of a QR code, the information encoded in the matrix, such as text, numbers, internet addresses, etc., can be obtained by scanning the code with an optical reader, such as the optical reader of a smartphone.
Therefore, in the case of the QR code type code section 22, the centering reference 28 corresponds to three large squares located at three vertices of the matrix, and the identification code 30 of the operation unit 14 is defined by a plurality of black and white pixels within the main square.
According to one possible embodiment, the QR code may be a square with a side length of at least 25 mm.
The invention further relates to an industrial textile machine 12 comprising at least two operating units 14 and at least one service trolley 16 serving the operating units 14 by using a drive device 18.
The industrial textile machine 12 further includes a positioning and centering device 20 of the type described above.
According to one possible embodiment, the control unit 26 may be located, for example, on each service trolley 16, or may be centralized.
The drive means 18 of the service trolley 16 may be of a type known per se, for example a rail along which the service trolley is moved by driving. Since the drive arrangement is not the specific subject of this description, no further details will be provided.
According to one possible embodiment, the code portion 22 may also include an identification code of the operating unit, which can be read by the operator. In this way, the identification code 30 of the operating unit 16 can also be read by the operator without the aid of a special scanning instrument for the identification code.
For example, the password section 22 may be disposed at the front of the operation unit 16 so as to be in a position convenient to be scanned by an optical scanner 24 provided on the cart.
According to one possible embodiment, the control unit 26 may be centralized and in operative communication with a plurality of operating units 14 and at least one service trolley 16.
According to one possible embodiment, the industrial textile machine 12 can be, for example, a spinning machine or a winding machine.
Furthermore, the principles of the present invention may also be applied to automatic or semi-automatic doffing or splicing service carts 16.
A method of positioning and centering a service trolley 16 in a textile machine 12 according to one embodiment of the invention will be described below.
The method mainly comprises the following steps:
providing a textile machine 12 of the type described above;
sending a service request signal from the operating unit 14 to at least one service vehicle 16;
an operation drive device 18 for moving at least one service vehicle 16 to the operating unit 14, wherein the code section 22 of the operating unit 14 read by the optical reader 24 contains the identification code 30 of the operating unit 14 requesting the service; and
the service cart 16 is centered with respect to the operation unit 14 based on the centering reference 28 of the password section 22.
Thus, the method enables the service trolley 16 to reach the operating unit 14 requesting a service (e.g. a doffing or a splicing operation), and once the operating unit requesting the service is identified, the service trolley 16 can be centered with respect to the operating unit 14 using the code section 22, in particular by means of a centering reference.
According to one possible embodiment, the industrial textile machine 12 can comprise at least two service trolleys 16, which can even be of different types.
Advantageously, the method may include a step in which the control unit 26 decides which service trolley 16 to send to the service requesting operating unit 14 based on operating information of the service trolley 16, such as the processing status and the distance from the service requesting operating unit 14.
Thus, the advantages that can be achieved by the present invention can now be seen.
Two key aspects of the invention relate to, for example:
identifying the number of the operation unit by scanning the contents of the password portion, particularly the QR code (for example, "10" is the identification number of the 10 th unit); and
the trolley is automatically centred by processing the correct alignment information of the optical scanner with the cryptographic section and by automating the service trolley 16, in particular by means of a QR code, with respect to the operating unit 14, thus by using the alignment reference (position detection mode) that the optical scanner normally uses to scan the code.
Using QR codes to position the cart enables significant operational advantages to be achieved, such as:
the size of the code is reduced compared to conventional bar code solutions;
the sensitivity of the system to dust and abrasion is low, so that the reliability of position control and the overall performance of the machine are improved;
by scanning the QR code using equipment connected to the computer network of the textile machine, additional information about the operating conditions of the unit can be obtained in real time;
the QR code is insensitive to orientation in a given position, thereby simplifying the application process intended to ensure that it is installed at a predetermined angle.
Furthermore, from an operational point of view, there is also an improvement in the centering, which corresponds to the unit and therefore in the immediate vicinity of the yarn path, and not in the head position where further centering with respect to the unit itself is required, for example in tube magazines (tube magazines) where bar codes are generally applied.
In addition, there is also an improvement in the user-machine interface in terms of system accessibility.
A person skilled in the art may modify the above-described embodiments to replace elements thereof with other functionally equivalent elements in order to meet specific requirements while remaining within the scope of protection of the following claims.
Claims (13)
1. Positioning and centering device (20) for a service trolley (16) of a textile machine (12) comprising at least two operating units (14), characterized in that said positioning and centering device (20) comprises:
a password section (22) provided on each of the operation units (14);
an optical reader (24) arranged on the service trolley (16) and adapted to read the code portion (22); and
a control unit (26) operatively connected to the optical reader (24) and to the drive means (18),
the code section (22) includes: a centering reference (28) for centering the optical reader (24) with respect to the cryptographic portion (22); and an identification code (30) of the operation unit (14), the password section being provided on the operation unit (14),
-the control unit (26), in dependence of a service request signal from an operating unit (14), being adapted to:
operating the drive device (18) to move at least one of the service trolleys (16) to the operating unit (14), the cryptographic portion (22) of the operating unit (14) read by the optical reader (24) containing the identification code (30) of the operating unit (14) requesting the service; and
centering the service vehicle (16) with respect to the operation unit (14) based on the centering reference (28) of the password section (22).
2. Positioning and centering device (20) according to the preceding claim, characterized in that said code portion (22) is a QR code.
3. Industrial textile machine (12) comprising at least two operating units (14) and at least one service trolley (16) for said operating units (14) and provided with drive means (18), said industrial textile machine (12) further comprising positioning and centering means (20) for the positioning and centering of said service trolley with respect to said operating units (14), characterized in that said positioning and centering means (20) comprise:
a password section (22) provided on each of the operation units (14);
an optical reader (24) arranged on the service trolley (16) and adapted to read the code portion (22); and
a control unit (26) operatively connected to the optical reader (24) and to the drive device (18),
the code section (22) includes: a centering datum (28) for centering the optical reader (24) relative to the cryptographic portion (22); and an identification code (30) of the operation unit (14), wherein the password portion is provided on the operation unit (14),
in accordance with a service request signal from the operating unit (14), the control unit (26) is adapted to:
operating the drive device (18) to move at least one of the service trolleys (16) to the operating unit (14), the code portion (22) of the operating unit containing the identification code (30) of the operating unit (14) requesting a service; and
-centering the service trolley (16) with respect to the operating unit (14) according to the centering reference (28) of the crypto-portion (22).
4. The industrial textile machine (12) according to the preceding claim, characterized in that the code portion (22) is a QR code.
5. The industrial textile machine (12) according to the preceding claim, characterized in that the QR code is a square with a side length of at least 25 mm.
6. The industrial textile machine (12) according to any one of claims 3 to 5, characterized in that the code section (22) further comprises an operating unit identification code which can be read by an operator.
7. The industrial textile machine (12) according to any one of claims 3 to 6, characterized in that the industrial textile machine (12) is a spinning machine.
8. The industrial textile machine (12) according to any one of claims 3 to 6, characterized in that the industrial textile machine (12) is a winder.
9. The industrial textile machine (12) according to any one of claims 3 to 8, characterized in that the service trolley (16) is a doffer of an automatic or semi-automatic type.
10. The industrial textile machine (12) according to any one of claims 3 to 8, characterized in that the service trolley (16) is a piecing trolley of automatic or semi-automatic type.
11. The industrial textile machine (12) according to any one of the preceding claims, characterized in that the control unit (26) is centralized and in operative communication with a plurality of the operating units (14) and at least one of the service trolleys (16).
12. Method for positioning and centering a service trolley (16) in a textile machine (12), characterized in that it comprises the following steps:
-providing a textile machine (12) according to any one of the preceding claims;
-sending a service request signal from the operating unit (14) to at least one service trolley (16);
an operation drive device (18) for moving at least one service vehicle (16) to the operating unit (14), the code section (22) of which, read by the optical reader (24), contains an identification code (30) of the operating unit (14) requesting the service; and
the service trolley (16) is centered with respect to the operating unit (14) according to a centering reference (28) of the password unit (22).
13. Method according to the preceding claim, characterized in that it comprises the following steps: in the step, the control unit (26) decides which service vehicle (16) to send to the operation unit (14) requesting the service based on the operation information of the service vehicle (16).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102021000022532A IT202100022532A1 (en) | 2021-08-30 | 2021-08-30 | POSITIONING AND CENTERING DEVICE FOR A SERVICE TROLLEY OF A TEXTILE MACHINE, TEXTILE MACHINE INCLUDING SAID DEVICE, AND PROCEDURE FOR POSITIONING AND CENTERING A SERVICE TROLLEY IN A TEXTILE MACHINE |
| IT102021000022532 | 2021-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115726068A true CN115726068A (en) | 2023-03-03 |
Family
ID=78333183
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211043192.5A Pending CN115726068A (en) | 2021-08-30 | 2022-08-29 | Positioning and centering device, industrial textile machine and related method |
| CN202222282072.2U Active CN218666486U (en) | 2021-08-30 | 2022-08-29 | Positioning and centering device and industrial textile machine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222282072.2U Active CN218666486U (en) | 2021-08-30 | 2022-08-29 | Positioning and centering device and industrial textile machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4140927A1 (en) |
| CN (2) | CN115726068A (en) |
| IT (1) | IT202100022532A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008029575A1 (en) * | 2008-06-21 | 2009-12-24 | Oerlikon Textile Gmbh & Co. Kg | Textile machine with a movable service unit |
| CH711650A1 (en) * | 2015-10-16 | 2017-04-28 | Rieter Ag Maschf | Method for operating a ring spinning machine after a yarn breakage. |
| AT519176B1 (en) * | 2016-10-14 | 2019-02-15 | Engel Austria Gmbh | robot system |
| DE112018003548A5 (en) * | 2017-07-12 | 2020-03-26 | Oerlikon Textile Gmbh & Co. Kg | Melt spinning device |
-
2021
- 2021-08-30 IT IT102021000022532A patent/IT202100022532A1/en unknown
-
2022
- 2022-08-12 EP EP22190132.5A patent/EP4140927A1/en active Pending
- 2022-08-29 CN CN202211043192.5A patent/CN115726068A/en active Pending
- 2022-08-29 CN CN202222282072.2U patent/CN218666486U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN218666486U (en) | 2023-03-21 |
| IT202100022532A1 (en) | 2023-03-02 |
| EP4140927A1 (en) | 2023-03-01 |
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