Compact Machine for Unwinding Multiple Strands of Material
The present disclosure relates to machines for unwinding strands of material from wound packages. As discussed in more detail below, machines for continuously unwinding multiple strands of material from wound packages according to the present disclosure may be arranged to be relatively more compact machines, wherein open areas are more efficiently used space, leading to a smaller and more compact footprint for the machines.
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The present disclosure relates to a machine for unwinding strands of material from wound packages. In particular, the present disclosure relates to a compact machine for continuously unwinding multiple strands of material from wound packages.
BACKGROUND OF THE INVENTIONTake off equipment is used to unwind strands of material that have been pre-wound onto cores. The pre-wound cores are called packages. Take off equipment unwinds a strand and then feeds the unwound strand to downstream equipment. Take off equipment can unwind packages in sequence while continuously feeding the downstream equipment. Each package has a single continuous strand of material with a leading end and a trailing end. In a take off process, the trailing end of a first package can be joined to the leading end of second package.
As take off equipment finishes unwinding the first (active) package, it pulls off the trailing end, which pulls off the leading end of the second (standby) package, which begins the unwinding of the second package. The standby package becomes the new active package. The finished first package can be replaced with a new standby package. This process of connecting ends and replacing packages can be repeated indefinitely. Thus, in a take off process, there is no need to stop the downstream equipment to replace packages.
In this process, for each strand being unwound, the take off equipment typically has two package unwind stations, for the active and standby packages. The two stations are typically adjacent to each other, with each station angled toward a shared downstream infeed location. Together, the two package unwind stations and the downstream infeed location form a take off apparatus, which can unwind one strand of material.
When the downstream equipment requires multiple strands of material, multiple take off apparatuses are used. However, in many machines, the take off apparatuses are arranged in a manner that leaves large open areas, which result in inefficiently used space, and thus, an unnecessarily large footprint for the unwinding machine.
SUMMARY OF THE INVENTIONThe present disclosure relates to machines for unwinding strands of material from wound packages. As discussed in more detail below, machines for continuously unwinding multiple strands of material from wound packages according to the present disclosure may be arranged to be relatively more compact machines, wherein open areas are more efficiently used space, leading to a smaller and more compact footprint for the machines.
In one form, a machine comprises: a first apparatus having first package unwind stations, a first downstream infeed location, and a first centerline, wherein the first apparatus is configured to unwind a first strand from a first package in one of the first unwind stations to the first downstream infeed location, and the first strand follows a first overall direction; and a second apparatus having second package unwind stations, a second downstream infeed location, and a second centerline, wherein the second apparatus is configured to unwind a second strand from a second package in one of the second unwind stations to the second downstream infeed location, and the second strand follows a second overall direction; and a downstream apparatus, which is downstream from the first apparatus and the second apparatus, and which uses the first strand and the second strand in a machine process; wherein the first centerline and the second centerline are substantially parallel, and the first overall direction is opposite from the second overall direction.
In another form, a machine comprises: a first apparatus having first package unwind stations, a first downstream infeed location, and a first centerline that is centered on and perpendicular to the first downstream infeed location, wherein the first apparatus is configured to unwind a first strand from a first package loaded into one of the first unwind stations to the first downstream infeed location, and the first strand follows a first overall direction; and a second apparatus having second package unwind stations, a second downstream infeed location, and a second centerline that is centered on and perpendicular to the second downstream infeed location, wherein the second apparatus is configured to unwind a second strand from a second package loaded into one of the second unwind stations to the second downstream infeed location, and the second strand follows a second overall direction; and a third apparatus having third package unwind stations, a third downstream infeed location, and a third centerline that is centered on and perpendicular to the third downstream infeed location, wherein the third apparatus is configured to unwind a third strand from a third package loaded into one of the third unwind stations to the third downstream infeed location, and the third strand follows a third overall direction; and a downstream apparatus, which is downstream from the first apparatus, the second apparatus, and the third apparatus, and which uses the first strand, the second strand, and the third strand in a machine process; wherein the first centerline, the second centerline, and the third centerline are arranged in a substantially radial array, and the first overall direction, the second overall direction, and the third overall direction are directed inward toward a center of the array.
As mentioned above, current take off apparatuses may be arranged in a manner that leaves large open areas, resulting in inefficiently used space, and thus, an unnecessarily large footprint for the unwinding machine. Such inefficient use of space is discussed in more detail below with respect the prior art arrangements are illustrated in
For example,
Due to the arrangement of the apparatuses 101-106 and the need for spacing between the package unwind stations, the machine 100 has a number of vertically oriented open spaces between the different parts of the apparatuses. Open spaces 161, 162, and 163 exist between the centers of apparatuses in the same column. Open spaces 171 and 172 exist between the outer extents of the apparatuses, at the intersection of the rows and the columns. These open areas represent inefficiently used space, and thus, an unnecessarily large footprint for the machine 100.
As discussed in more detail below, machines for continuously unwinding multiple strands of material from wound packages according to the present disclosure may be arranged to be relatively more compact machines, wherein open areas are more efficiently used space, leading to a smaller and more compact footprint for the machines. For example,
In
Due to the arrangement of the apparatuses 201-206, the sizes of open spaces (such as 171 and 172 in
In another example,
In
Due to the arrangement of the apparatuses 301-306, the sizes of open spaces (such as 161, 162, and 163 in
Adjacent apparatuses 401 and 402 have opposite overall directions. Also, adjacent apparatuses 402 and 403 have opposite overall directions. Further, adjacent apparatuses 403 and 404 have opposite overall directions.
For adjacent apparatuses, portions of the substantially conical overall shapes of their strand outlines are parallel with each other. A portion of the strand outline 416 is parallel with a portion of the strand outline 423, separated by distance 481. A portion of the strand outline 426 is parallel with a portion of the strand outline 433, separated by distance 482. A portion of the strand outline 436 is parallel with a portion of the strand outline 443, separated by distance 483.
In any of the embodiments described herein, the distance between adjacent unwinding strands (such as the distances 481, 482, and 483 in the embodiment of
In a particular alternate embodiment of
Due to the arrangement of the apparatuses 401-404, the sizes of open spaces (such as 181 and 182 in
For further reference,
Due to the arrangement of the apparatuses 501-506, the sizes of open spaces between the apparatuses are reduced. These open areas are more efficiently used space, leading to a smaller and more compact footprint for the machine 500. The embodiment of
For further reference,
Due to the arrangement of the apparatuses 601-606, the sizes of open spaces between the apparatuses are reduced. These open areas are more efficiently used space, leading to a smaller and more compact footprint for the machine 600. The embodiment of
For further reference,
Due to the arrangement of the apparatuses 701-704, the sizes of open spaces between the apparatuses are reduced. These open areas are more efficiently used space, leading to a smaller and more compact footprint for the machine 700. The embodiment of
All of the take off apparatuses in
In the embodiment of
In
In any of the embodiments described herein, the distance between adjacent unwinding strands (such as the distances 881, 882, and 883 in the embodiment of
Due to the arrangement of the apparatuses 801-804, the sizes of open spaces (such as 181 and 182 in
The embodiment of
The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm.”
Every document cited herein, including any cross referenced or related patent or application, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.
While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims
1. A machine comprising:
- a first apparatus having first package unwind stations, a first downstream infeed location, and a first centerline, wherein the first apparatus is configured to unwind a first strand from a first package in one of the first unwind stations to the first downstream infeed location, and the first strand follows a first overall direction; and
- a second apparatus having second package unwind stations, a second downstream infeed location, and a second centerline, wherein the second apparatus is configured to unwind a second strand from a second package in one of the second unwind stations to the second downstream infeed location, and the second strand follows a second overall direction; and
- a downstream apparatus, which is downstream from the first apparatus and the second apparatus, and which uses the first strand and the second strand in a machine process;
- wherein the first centerline and the second centerline are substantially parallel, and the first overall direction is opposite from the second overall direction.
2. The machine of claim 1, wherein the first centerline and the second centerline are completely parallel.
3. The machine of claim 1, wherein the first centerline and the second centerline are completely horizontal.
4. The machine of claim 1, wherein the first centerline is disposed at a first vertical elevation, the second centerline is disposed at a second vertical elevation, and the first vertical elevation is equal to the second vertical elevation.
5. The machine of claim 1, wherein:
- the first centerline is disposed at a first elevation, the second centerline is disposed at a second elevation, and the first elevation is greater than the second elevation;
- the first apparatus has a first footprint, the second apparatus has a second footprint, and the first footprint overlaps the second footprint; and
- the first centerline is horizontally offset from the second centerline.
6. The machine of claim 1, wherein:
- one of the first package unwind stations is a first closest package unwind station, which is closest to the second apparatus, and which has a first strand unwind outline with a first overall shape that is substantially conical;
- one of the second package unwind stations is a second closest package unwind station, which is closest to the first apparatus, and which has a second strand unwind outline with a second overall shape that is substantially conical; and
- a portion of the first overall shape and a portion of the second overall shape are substantially parallel.
7. The machine of claim 6, wherein a portion of the first overall shape and a portion of the second overall shape are completely parallel.
8. The machine of claim 6, wherein the first overall shape is separated from the second overall shape by an offset distance that is less than or equal to 30 centimeters.
9. The machine of claim 6, wherein:
- each of the first package unwind stations is configured to hold a first package with a first maximum diameter;
- the first overall shape is separated from the second overall shape by an offset distance that is less than or equal to the first maximum diameter.
10. The machine of claim 6, wherein:
- each of the first package unwind stations is configured to hold a first package with a first maximum diameter;
- the first overall shape is separated from the second overall shape by an offset distance that is less than or equal to half of the first maximum diameter.
11. The machine of claim 1, comprising:
- a third apparatus having third package unwind stations, a third downstream infeed location, and a third centerline that is centered on and perpendicular to the third downstream infeed location, wherein the third apparatus is configured to unwind a third strand from a third package loaded into one of the third unwind stations to the third downstream infeed location, and the third strand follows a third overall direction; and
- a fourth apparatus having fourth package unwind stations, a fourth downstream infeed location, and a fourth centerline that is centered on and perpendicular to the fourth downstream infeed location, wherein the fourth apparatus is configured to unwind a fourth strand from a fourth package loaded into one of the fourth unwind stations to the fourth downstream infeed location, and the fourth strand follows a fourth overall direction; and
- the downstream apparatus, which is downstream from the third apparatus and the fourth apparatus, and which uses the third strand and the fourth strand in the machine process;
- wherein the first, second, third, and fourth centerlines are substantially parallel, and the first and third overall directions are opposite from the second and fourth overall directions.
12. A machine comprising:
- a first apparatus having first package unwind stations, a first downstream infeed location, and a first centerline that is centered on and perpendicular to the first downstream infeed location, wherein the first apparatus is configured to unwind a first strand from a first package loaded into one of the first unwind stations to the first downstream infeed location, and the first strand follows a first overall direction; and
- a second apparatus having second package unwind stations, a second downstream infeed location, and a second centerline that is centered on and perpendicular to the second downstream infeed location, wherein the second apparatus is configured to unwind a second strand from a second package loaded into one of the second unwind stations to the second downstream infeed location, and the second strand follows a second overall direction; and
- a third apparatus having third package unwind stations, a third downstream infeed location, and a third centerline that is centered on and perpendicular to the third downstream infeed location, wherein the third apparatus is configured to unwind a third strand from a third package loaded into one of the third unwind stations to the third downstream infeed location, and the third strand follows a third overall direction; and
- a downstream apparatus, which is downstream from the first apparatus, the second apparatus, and the third apparatus, and which uses the first strand, the second strand, and the third strand in a machine process;
- wherein the first centerline, the second centerline, and the third centerline are arranged in a substantially radial array, and the first overall direction, the second overall direction, and the third overall direction are directed inward toward a center of the array.
13. The machine of claim 12, wherein the first centerline, the second centerline, and the third centerline are arranged in a completely radial array.
14. The machine of claim 12, wherein the first centerline, the second centerline, and the third centerline are completely horizontal.
15. The machine of claim 12, wherein the first centerline is disposed at a first elevation, the second centerline is disposed at a second elevation, the third centerline is disposed at a third elevation, and the first, second, and third elevations are substantially equal.
16. The machine of claim 12, wherein the first apparatus has a first footprint, the second apparatus has a second footprint, the third apparatus has a third footprint, and the first, second, and third footprints do not overlap.
17. The machine of claim 12, wherein:
- one of the first package unwind stations is a first closest package unwind station, which is closest to the second apparatus, and which has a first strand unwind outline with a first overall shape that is substantially conical;
- one of the second package unwind stations is a second closest package unwind station, which is closest to the first apparatus, and which has a second strand unwind outline with a second overall shape that is substantially conical; and
- a portion of the first overall shape and a portion of the second overall shape are substantially parallel.
18. The machine of claim 17, wherein a portion of the first overall shape and a portion of the second overall shape are completely parallel.
19. The machine of claim 17, wherein the first overall shape is separated from the second overall shape by an offset distance that is less than or equal to 30 centimeters.
20. The machine of claim 17, wherein:
- each of the first package unwind stations is configured to hold a first package with a first maximum diameter;
- the first overall shape is separated from the second overall shape by an offset distance that is less than or equal to the first maximum diameter.
Type: Application
Filed: Nov 6, 2012
Publication Date: Jun 27, 2013
Applicant: THE PROCTER & GAMBLE COMPANY (Cincinnati, OH)
Inventor: The Procter & Gamble Company (Cincinnati, OH)
Application Number: 13/669,515
International Classification: B65H 49/00 (20060101);