CN113508200B - Shrinking machine - Google Patents
Shrinking machine Download PDFInfo
- Publication number
- CN113508200B CN113508200B CN202080017923.1A CN202080017923A CN113508200B CN 113508200 B CN113508200 B CN 113508200B CN 202080017923 A CN202080017923 A CN 202080017923A CN 113508200 B CN113508200 B CN 113508200B
- Authority
- CN
- China
- Prior art keywords
- roller
- inlet
- conveyor belt
- stretching
- textile
- 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.)
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Links
- 239000004753 textile Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000012858 resilient material Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 18
- 239000004744 fabric Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C21/00—Shrinking by compressing
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Centrifugal Separators (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
A shrinking machine comprising a conveyor belt (2) that is elastically bendable and stretchable for supporting and transporting textile articles (T) and is arranged in a closed loop around a plurality of rollers (3); a stretching roller (5) which delimits a stretching channel (8) for the textile (T) with the conveyor belt (2); an inlet roller (4) arranged beside the stretching roller (5) and having a circular crown (13) made of compressible material; a tensioning roller (14) is operatively upstream of the inlet roller (4) and rotates at a lower surface rotational speed than the inlet roller (4) resulting in elongation of the conveyor belt (2). During operation, the stretching roller (5) is positioned against the inlet roller (4), partially compressing the circular crown (13), deforming the stretching channel (8) and operatively moving the inlet (9) upstream.
Description
Definition of the definition
In this application, the term "textile" refers to any type of continuous and discontinuous fabric, such as orthogonal fabrics, knit fabrics, nonwoven fabrics, and the like.
Technical Field
The invention is suitable for textile industry, in particular to a textile shrinking machine.
In more detail, the invention relates to the shrink section of a shrink machine.
Background
During the manufacturing process, the textile is subjected to longitudinal tension, which can result in its brief elongation. Thus, there is a need to eliminate this elongation and avoid automatic recovery of the textile during or after packaging of the final product. In fact, this situation permanently compromises the quality of the product itself.
Thus, it is well known that textile shrinking machines allow for longitudinal extension recovery and achieve their stability.
Among these known machines, there are some retractors having a flexible and elongated conveyor belt, typically made of rubber, arranged in a closed loop around a series of rollers, which, among other things, are responsible for the movement of the conveyor belt. Notably, an entrance roller, an exit roller, and a tension roller are provided in contact with the inside of the conveyor belt.
There is also a stretch roll between the inlet roll and the outlet roll, which is much larger in diameter than the inlet roll and the outlet roll. The textile to be treated passes in a stretch channel defined between the stretch roller and the conveyor belt. The pushing force of the conveyor belt against the textile product by the stretching rollers achieves the desired stretching.
In the channel between the tensioning roller and the entrance roller, the conveyor belt is stretched by exerting a lower rotational speed on the tensioning roller than on the entrance roller. When the belt loses contact with the entrance roller, it contracts until it returns to its previous state.
This phenomenon is then used to shrink the textile. In fact, it is sufficient to place the conveyor belt on it and bring it close to the conveyor belt itself before it shrinks. This occurs in the stretch passage.
Furthermore, it is convenient that stretching and shrinking occur simultaneously, making the latter more efficient and durable.
However, the shrinkage of the conveyor belt has started at the last part in contact with the entrance roller. This usually occurs before entering the stretch channel, i.e. before the textile product approaches the conveyor belt. The result is a loss of ability to shrink because the shrinkage of the conveyor belt begins before it is transferred to the textile product.
To compensate for this, according to the prior art, the rotational speed difference of the entrance roller and the tension roller is increased to increase the elongation of the conveyor belt.
However, the strong traction exerted on the conveyor belt often results in waving thereon, thereby affecting the quality of the textile.
In addition, the tension to which the conveyor belt is subjected can cause the conveyor belt itself to slip off the entry rollers, with subsequent loss of shrinkage on the textile.
Documents US 2015,040 A1, US 3,469,292A, DE 718,624C and US 2006 112526 are also known, wherein different solutions for lengthening a conveyor belt are proposed. However, these documents do not address the drawbacks associated with the loss of the ability of the conveyor belt to shrink due to premature shrinkage.
Disclosure of Invention
The object of the present invention is to provide a shrinking machine that allows to shrink textile products properly using conveyor elongation techniques, at least partially overcoming the above drawbacks.
In particular, it is an object of the present invention to provide a shrinking machine that allows to increase the degree of shrinkage achieved by optimizing the shrinkage imparted to the textile product by the conveyor belt.
It is a further object of the present invention to provide a shrinking machine that allows avoiding shrinkage of the conveyor belt before holding the textile product on the conveyor belt.
It is a further object of the invention to avoid the formation of waves in the conveyor belt during the elongation step.
Another object is to avoid slipping of the conveyor belt over the entrance rollers due to the tension of the conveyor belt.
This object, as well as other objects that will become more apparent below, are achieved by a shrinking machine according to the following claims, which are considered to be an integral part of this patent.
In particular, the machine comprises at least one elastically bendable and stretchable conveyor belt for transporting and treating textiles. Such a conveyor belt, typically made of rubber, is arranged in a closed loop around a plurality of rollers for movement thereof.
At least one stretching roller has at least a portion of its outer surface defining with a corresponding portion of the conveyor belt a textile stretching tunnel having an inlet and an outlet.
According to one aspect of the invention, at least one inlet roller is disposed beside the stretching roller to define the inlet of the stretching tunnel. There is also at least one tensioning roller operatively disposed upstream of the inlet roller and rotating at a lower surface rotational speed than the inlet roller.
As a result, the conveyor belt has already undergone elongation caused by the difference in rotational speed of the roller surface before reaching the entrance of the stretch channel. In this case, the conveyor belt receives the textile product, supporting it.
In the case of an inlet roll, according to another aspect of the invention, the inlet roll has at least one rounded crown made of compressible material, typically rubber. Furthermore, the stretching roller is arranged against the inlet roller at least during operation, at least partially compressing the circular crown.
Advantageously, compressing the circular crown of the inlet roller enables a wider contact area between the circular crown and the conveyor belt.
Still advantageously, the compression of the circular crown is greatest at the axis connecting the centre of rotation of the inlet roller and the centre of rotation of the stretching roller. As a result, still advantageously, the shrinkage of the conveyor belt occurs only downstream of this axis.
Still advantageously, the circular crown of the compression inlet roller is such that the inlet of the stretching tunnel is operatively moved upstream of the axis connecting the centre of rotation of the inlet roller and the centre of rotation of the stretching roller described above.
Thus, still advantageously, the textile product is already held against the conveyor belt before the conveyor belt starts the shrinkage step, increasing the shrinkage effect of the textile product compared to what happens in the known art.
Still advantageously, the compressible material forming the outer surface of the inlet roller increases the friction between the conveyor belt and the inlet roller itself, thereby improving slip resistance.
According to another aspect of the invention, the retractor further comprises at least one guide roller operatively disposed between the entrance roller and the tension roller.
Advantageously, the guide rollers allow the conveyor belt to be guided from the tensioning roller to the entrance roller while avoiding possible waving or wrinkling of the conveyor belt itself, thereby affecting the textile.
Drawings
Further characteristics and advantages of the invention will become clearer from the detailed description of a preferred but non-limiting embodiment of a shrinking machine according to the invention, illustrated by way of non-limiting example with reference to the attached drawings, wherein figure 1 is a schematic view of the shrinking machine according to the invention.
Detailed Description
With reference to the mentioned figures, a shrinkage machine 1 of a textile product T is described, wherein the textile product T represents any type of continuous and discontinuous fabric as previously defined.
The shrinking machine comprises a conveyor belt 2 which is elastically bendable and stretchable for supporting and transporting the textile product T. Such conveyor belts 2 are typically made of an elastic material, typically rubber. This feature should not be considered as limiting the invention, as the conveyor belt 2 may be made of any material having elastic and flexible characteristics sufficient for this purpose.
According to the described embodiment, the conveyor belt 2 is arranged in a closed loop around a plurality of rollers 3 for movement thereof. Wherein an inlet roll 4 and a stretching roll 5 are included. A portion of the outer surface 6 of the stretching roller 5 delimits with a corresponding portion 7 of the conveyor belt 2 a stretching tunnel 8 for the textile product T. The stretch passage 8 has an inlet 9 and an outlet 10.
In this stretching tunnel 8, the conveyor belt 2 pushes the textile product T against the stretching rollers 5. The stretching roller 5 is generally heated by steam injected into the cavity of the stretching roller 5 itself, thereby heating the textile T.
The contractor 1 further comprises a tension roller 14 operatively disposed upstream of the inlet roller 4 and rotating at a lower rotational speed than the surface of the inlet roller 4.
Advantageously, the conveyor belt 2 is stretched due to the difference in rotational speed of the entrance roller 4 and the tension roller 14 during the sliding between the tension roller 14 and the entrance roller 4. The conveyor belt 2 is then extended and receives the textile product T at this stage. As a result, the shrinkage experienced by the conveyor belt 2 when separated from the entrance roller 4 will shrink the textile held on the conveyor belt 2 by the stretching roller 5.
In the embodiment described, the stretching roller 5 is not always placed against the inlet roller 4, but is movable along an axis X connecting the first centre of rotation 11 of the inlet roller 4 and the second centre of rotation 12 of the stretching roller 5.
Thus, advantageously, the stretching roller 4 can be moved away from the contact position, in order to facilitate maintenance or not to damage the conveyor belt when the machine is stopped. Obviously, this aspect should not be considered as limiting the different embodiments of the invention, wherein, for example, the inlet roller is movable relative to the stretching roller, or both are stationary, contacting each other.
According to another aspect of the invention, the inlet roller 4 has a circular crown 13 of compressible material, typically made of rubber. Such features should not be considered as limiting the invention. In fact, according to a possible alternative embodiment not shown in the figures, the inlet roller is entirely made of compressible material. The type of material used is also a non-limiting feature of the present invention.
According to another aspect of the invention, during operation, the stretching roller 5 is arranged against the inlet roller 4, partially compressing the circular crown 13 made of compressible material.
Advantageously, the crown 13 of the compression inlet roller 4 is able to deform the initial portion of the stretch channel 8, thus operatively moving the inlet 9 of the stretch channel 8 upstream of the axis X connecting the centers of rotation of the inlet roller 4 and the stretch roller 5. That is, the contact between the inlet roller 4 and the stretching roller 5 is not defined as a single point tangent, but as a section of a secant (secant) where the stretching roller 5 is tangent to the circular area of the inlet roller 4.
Still advantageously, the textile product T abuts against the conveyor belt 2 before the conveyor belt 2 is no longer in contact with the entrance roller 4, i.e. before the conveyor belt 2 starts the shrinkage step. The present invention allows a greater shrinkage of the textile T compared to the prior art in which the textile is abutted against the conveyor belt only after the shrinkage step of the conveyor belt has been initiated.
Furthermore, still advantageously, a more efficient and durable shrinkage is achieved, since the textile T is heated by the stretching rollers 5.
According to the known art, as mentioned above, the conveyor belt is generally operated with a particularly high tension value in order to achieve a greater extension of the belt and thus a greater and more efficient shrinkage of the textile product. In this way, the conveyor belt can slip off the entrance rollers, as previously described, thereby affecting the textile and compromising its quality.
Advantageously, according to the invention, the presence of the circular crown 13 made of compressible material increases the friction between the conveyor belt 2 and the inlet roller 4, improving the slip resistance which may occur during the elongation step of the conveyor belt 2.
According to the embodiment of the invention being described, the tensioning roller 14 also has an outer crown 15 made of rubber or other material that is advantageous to increase friction with the conveyor belt 2, further reducing the risk of slippage of the conveyor belt 2 as it moves along its trajectory. It will be clear that such features should not be considered as limiting the invention.
According to another aspect of the invention, the contractor 1 further comprises a guide roller 16 disposed between the downstream of the tension roller 14 and upstream of the inlet roller 4.
Advantageously, the presence of the guide roller 16 keeps the conveyor belt 2 in tension and shortens the air path between the tensioning roller 14 and the inlet roller 4. As a result, the waviness generated on the conveyor belt 2 is eliminated, and the quality of the textile T is improved.
According to another aspect of the invention, the contractor 1 comprises an additional guide roller 17 operatively disposed in the vicinity upstream of the tensioning roller 14. Advantageously, the presence of the additional guide roller 17, and the action of the guide roller 16, increases the surface of the conveyor belt 2 in contact with the tensioning roller 14. In this way, the friction between the conveyor belt 2 and the tension roller 14 is increased, enhancing the slip resistance.
However, these aspects of the invention should not be construed as limiting the various embodiments. In particular, according to alternative embodiments not shown in some figures, there may be a plurality of guide rollers and a plurality of tensioning rollers. In contrast, according to other alternative embodiments, no additional guide rollers are provided. Also, according to certain alternative embodiments, no guide rollers are provided.
From the foregoing, it can be seen that the shrinker of the present invention achieves all the intended objects.
In particular, by optimizing the shrinkage of the textile by the conveyor belt, the elongation technique of the conveyor belt can be used to achieve proper shrinkage of the textile.
In fact, it is a further layer that allows the textile to abut against the conveyor belt before it starts to shrink.
The shrinker of the present invention also avoids the formation of waves in the conveyor belt during the elongation step.
In addition, it can avoid the conveyor belt slipping off the entrance roller due to the tension of the conveyor belt.
The invention is susceptible of numerous variations and modifications, all of which are encompassed by the appended claims. All the details may be replaced by other technically equivalent elements and the materials used may vary as required, without departing from the scope of protection of the present invention as defined by the attached claims.
Claims (5)
1. A shrinkage machine for textile products (T), comprising:
-at least one elastically bendable and stretchable conveyor belt (2) of elastic material for supporting and transporting textiles (T), said conveyor belt (2) being arranged in a closed loop around a plurality of rollers (3) for movement thereof;
at least one stretching roller (5), at least a portion of the outer surface (6) of which delimits with a corresponding portion of the conveyor belt (2) a textile (T) stretching tunnel (8) having an inlet (9) and an outlet (10);
-at least one inlet roller (4) arranged beside said stretching roller (5) to delimit said inlet (9) of said stretching tunnel (8);
the method is characterized in that:
at least one tensioning roller (14) operatively disposed upstream of the inlet roller (4) and rotating at a lower surface rotation speed than the inlet roller (4) so as to cause elongation of the conveyor belt (2) at least between the tensioning roller (14) and the inlet roller (14);
the inlet roller (4) comprises at least one circular crown (13) made of compressible material;
-at least during operation, the stretching roller (5) is arranged against the inlet roller (4) and at least partially compresses the circular crown (13) made of compressible material, deforming at least an initial portion of the stretching tunnel (8) and operatively moving the inlet (9) of the stretching tunnel (8) upstream of an axis (X) connecting a first rotation center (11) of the inlet roller (4) and a second rotation center (12) of the stretching roller (5);
the stretching roller (5) is movable relative to the inlet roller (4) along the axis (X) connecting the first (11) and second (12) centre of rotation.
2. A shrinking machine as claimed in claim 1, wherein the resilient material is rubber.
3. The machine according to any one of the preceding claims, characterized in that the tensioning roller (14) has at least one circular outer crown (15) made of rubber.
4. The machine according to any one of the preceding claims, comprising at least one guiding roller (16) operatively arranged between the inlet roller (4) upstream and the tensioning roller (14) downstream.
5. A shrinking machine according to any of the preceding claims, comprising at least one additional guiding roller (17), operatively upstream of the tensioning roller (14).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102019000003121 | 2019-03-04 | ||
| IT102019000003121A IT201900003121A1 (en) | 2019-03-04 | 2019-03-04 | A COMPACTING MACHINE |
| PCT/IB2020/051646 WO2020178670A1 (en) | 2019-03-04 | 2020-02-26 | A shrinking machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113508200A CN113508200A (en) | 2021-10-15 |
| CN113508200B true CN113508200B (en) | 2023-11-24 |
Family
ID=66641377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080017923.1A Active CN113508200B (en) | 2019-03-04 | 2020-02-26 | Shrinking machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3902950B1 (en) |
| CN (1) | CN113508200B (en) |
| IT (1) | IT201900003121A1 (en) |
| WO (1) | WO2020178670A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202200008354A1 (en) * | 2022-04-27 | 2023-10-27 | Sintec Textile S R L | FABRIC COMPACTING MACHINE AND RELATED COMPACTION METHOD |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE718624C (en) * | 1938-05-07 | 1942-03-17 | C G Haubold Ag | Device for shrinking fabric webs in their longitudinal direction |
| US3469292A (en) * | 1967-06-06 | 1969-09-30 | Kinyosha Kk | Preshrinking machine for fabrics and the like |
| US3866277A (en) * | 1972-12-13 | 1975-02-18 | Iwajiro Hojyo | Method of shrinking cloth or paper |
| CN1811041A (en) * | 2004-11-15 | 2006-08-02 | 斯佩罗托里玛有限责任公司 | Apparatus and method for shrinking textile substrates |
| CN1886544A (en) * | 2003-10-02 | 2006-12-27 | 普洛-非特国际有限公司 | Apparatus for imparting stretch to fabrics |
| CN201560321U (en) * | 2009-11-12 | 2010-08-25 | 渤扬复合面料科技(昆山)有限公司 | Fabric ironing mechanism |
| CN104145058A (en) * | 2012-02-29 | 2014-11-12 | 可乐丽股份有限公司 | Elastic artificial leather and production method therefor |
| CN109072525A (en) * | 2016-02-08 | 2018-12-21 | 拉费尔有限公司 | Compacting machine and corresponding debulking methods for fabric |
-
2019
- 2019-03-04 IT IT102019000003121A patent/IT201900003121A1/en unknown
-
2020
- 2020-02-26 WO PCT/IB2020/051646 patent/WO2020178670A1/en unknown
- 2020-02-26 EP EP20715195.2A patent/EP3902950B1/en active Active
- 2020-02-26 CN CN202080017923.1A patent/CN113508200B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE718624C (en) * | 1938-05-07 | 1942-03-17 | C G Haubold Ag | Device for shrinking fabric webs in their longitudinal direction |
| US3469292A (en) * | 1967-06-06 | 1969-09-30 | Kinyosha Kk | Preshrinking machine for fabrics and the like |
| US3866277A (en) * | 1972-12-13 | 1975-02-18 | Iwajiro Hojyo | Method of shrinking cloth or paper |
| CN1886544A (en) * | 2003-10-02 | 2006-12-27 | 普洛-非特国际有限公司 | Apparatus for imparting stretch to fabrics |
| CN1811041A (en) * | 2004-11-15 | 2006-08-02 | 斯佩罗托里玛有限责任公司 | Apparatus and method for shrinking textile substrates |
| CN201560321U (en) * | 2009-11-12 | 2010-08-25 | 渤扬复合面料科技(昆山)有限公司 | Fabric ironing mechanism |
| CN104145058A (en) * | 2012-02-29 | 2014-11-12 | 可乐丽股份有限公司 | Elastic artificial leather and production method therefor |
| CN109072525A (en) * | 2016-02-08 | 2018-12-21 | 拉费尔有限公司 | Compacting machine and corresponding debulking methods for fabric |
Non-Patent Citations (1)
| Title |
|---|
| 董作光.《纺织品经营常识》.1980,第239页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3902950A1 (en) | 2021-11-03 |
| IT201900003121A1 (en) | 2020-09-04 |
| EP3902950B1 (en) | 2024-01-17 |
| CN113508200A (en) | 2021-10-15 |
| EP3902950C0 (en) | 2024-01-17 |
| WO2020178670A1 (en) | 2020-09-10 |
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