Variable-diameter bobbin for supercritical waterless dyeing

Abstract

The utility model provides a variable-diameter bobbin for supercritical waterless dyeing, which comprises a stainless steel bobbin body provided with a through hole, and is characterized in that the stainless steel bobbin body is an integrated cylindrical bobbin formed by curling a long-strip-shaped stainless steel sheet and inserting two ends of the long-strip-shaped stainless steel sheet in a staggered manner. The long-strip-shaped stainless steel sheet comprises a middle section, an inserting section and an inserting section, the inserting section and the inserting section are connected with the two ends of the middle section, the middle section is rectangular, the width of the middle section is smaller than that of the inserting section, the width of the inserting section is smaller than that of the middle section, and protruding parts are arranged on the edges of the inserting section. The two side edges of the inserting section are bent inwards to form two inserting grooves, the protruding parts on the two side edges of the inserting section are embedded into the inserting grooves in the corresponding sides respectively, and the elastic inserting structure with the variable diameter is formed. By the adoption of the integrated structure, the bobbin automatically adjusts the perimeter along with shrinkage of the yarn, the difference of the shrinkage rate of the inner-layer yarn and the outer-layer yarn can be reduced, and the bobbin has the advantages of being simple in structure, convenient to machine and manufacture, low in cost, convenient to use and reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dyeing equipment technical field, specifically say a kind of variable diameter bobbin for supercritical waterless dyeing. BACKGROUND

[0002] Supercritical carbon dioxide dyeing technology is a new green dyeing technology, which has the advantages of high efficiency, no pollution, short dyeing time, etc., and is the development direction of future dyeing technology.

[0003] This technology uses supercritical CO2 as a dyeing medium. The dyeing equipment usually includes a dye kettle, a dyeing tank and a supercritical CO2 flow guide pipe connecting the dye kettle and the dyeing tank. The dye is placed in the dye kettle, and the dyed material is placed in the dyeing tank. When CO2 is heated to above 31℃ and the pressure exceeds 7.3MPa, it becomes a non-gas and non-liquid state - supercritical state. The supercritical CO2 is pumped into the flow guide pipe by a circulating pump, so that it continuously circulates between the dye tank and the dyeing tank. The dye in the dye tank is dissolved by supercritical CO2 and transported to the pores of the fiber in the dyeing tank with supercritical CO2, so that the dye is evenly and quickly dyed on the fabric (or yarn). The whole process does not need cleaning and drying process. Many countries are now trying to develop such supercritical CO2 waterless dyeing equipment to make it develop towards industrialization.

[0004] With the deepening of the study of supercritical dyeing, the ordinary circular dyeing bobbin used for traditional water dyeing can no longer adapt to supercritical waterless dyeing. To meet the needs of supercritical waterless dyeing, Chinese patent (application number: 202222833632.9) discloses a yarn dyeing bobbin suitable for supercritical dyeing kettle. It includes a cylinder, a through hole and a notch. The cylinder is provided with notches at both ends. A plurality of through holes are formed on the cylinder by drilling holes on the pipe surface. The plurality of through holes form a large number of hollow areas, and the hollow area accounts for 60%-80% of the surface area of the outer wall of the cylinder. By optimizing the structure, notches are provided on the structure of both ends of the bobbin, and the sealing performance of the bobbin during installation and placement is improved by cooperating with the corresponding size and shape of the gasket. The material is made of chromium-nickel alloy metal material, which can further improve the high pressure resistance of the dyeing bobbin, so as to stably realize the supercritical carbon dioxide fluid dyeing process. The large area of hollowing improves the flux of the dyeing bobbin, and the dyeing bobbin under the above flux can ensure the effective circulation efficiency of the dyeing liquid and the evenness of the yarn in the supercritical carbon dioxide fluid dyeing process.

[0005] The yarn dyeing bobbin of the above patent has been improved compared with the common round dyeing yarn bobbin, and basically meets the needs of supercritical fluid dyeing. However, the diameter of the yarn dyeing bobbin of the above patent is fixed, and due to the high temperature and high pressure in the supercritical fluid dyeing process, the shrinkage of the yarn is higher than that in the traditional water dyeing process, and the difference in shrinkage between the inner layer and the outer layer causes defects such as color difference of the dyed yarn, resulting in quality problems. A variable diameter bobbin is also disclosed in Chinese Patent (Application No. 01233574), which comprises a plurality of long strip-shaped circular arc pieces with perforations, which are arranged in an inner and outer double-layer movable overlapping manner to form a cylindrical or conical shape, and a positioning column and a circular arc guide column are arranged on the inner edge of the outer circular arc piece, and the fulcrum of a torsion spring is fixed on the positioning column, and the two movable ends of the torsion spring are fixed on the inner circular arc pieces on both sides, and a circular arc guide pipe is arranged on the inner circular arc pieces on both sides opposite the circular arc guide column. The diameter of the bobbin can be automatically adjusted according to the shrinkage force of the yarn, balancing the shrinkage force of the inner layer yarn and the outer layer yarn, and having the effect of easily solving the color difference between the inner layer and the outer layer during dyeing. The variable diameter bobbin of the above patent basically solves the problem of color difference between the inner layer and the outer layer during dyeing. However, it uses many parts, and the structure and shape are complex, which causes inconvenience in processing and assembly, high production cost, easy damage, and is not suitable for large-scale popularization and application.

[0006] How to design a supercritical waterless dyeing variable diameter yarn pipe that can automatically adjust the diameter of the yarn pipe, reduce the difference in shrinkage rate between the inner and outer layers of the yarn, and has the advantages of simple structure, convenient processing and manufacturing, low cost, flexible and reliable variable diameter. This is a technical problem that needs to be solved in the field. Practical new type content

[0007] The utility model discloses in order to solve the above -mentioned problems of prior art, provide a supercritical waterless dyeing variable diameter yarn pipe, adopt integral type structure, and the yarn pipe is automatically adjusted with the shrinkage of yarn Self circumference can reduce the difference in shrinkage rate between the inner and outer layers of the yarn, has the characteristics such as simple structure, convenient processing and manufacturing, low cost, convenient to use and reliable.

[0008] The utility model discloses a purpose is realized through the following technical schemes:

[0009] The utility model provides a supercritical anhydrous dyeing variable diameter bobbin, including stainless steel bobbin body, the stainless steel bobbin body is provided with through -hole, it is characterized in that, the stainless steel bobbin body is the integral type cylindrical bobbin formed by the crimping of long strip stainless steel sheet and the staggered insertion of both ends, the long strip stainless steel sheet includes the insertion section and the insertion section connected with both ends of the middle section, the middle section is rectangle, and the width is less than the insertion section, the width of insertion section is less than the middle section, the edge of insertion section is provided with the protruding portion, the both sides of insertion section are embedded in the slot of corresponding side respectively after the inward bending of both sides of insertion section, and the elastic insertion structure of variable diameter is formed.

[0010] The improvement of the above technical solution: the slot is the U-shaped groove formed by the twice bending of the side of the insertion section, and the openings of the two U-shaped grooves are oppositely arranged, and the spacing of the bottoms of the two slots is consistent with the width of the middle section.

[0011] The further improvement of the above technical solution: the slot on the insertion section includes a first bending surface and a second bending surface, the second bending surface is perpendicularly connected with the insertion section, the first bending surface is perpendicularly connected with the second bending surface, and the first bending surface is parallel with the insertion section.

[0012] The first improvement of the above technical solution: the protruding portion on the edge of the insertion section is a square slide.

[0013] The second improvement of the above technical solution: the protruding portion on the edge of the insertion section is a semicircular protrusion, a plurality of through holes or recesses are arranged on the second bending surface of the slot, and the semicircular protrusion is embedded in the through hole or recess at a proper position on the side surface of the slot to realize positioning of the bobbin in a proper diameter size state.

[0014] The third improvement of the above technical solution: the protruding portion on the edge of the insertion section is a wavy edge, a plurality of recesses or through holes are arranged on the second bending surface of the slot, and the protruding portion of the wavy edge is embedded in the recess or through hole at a proper position on the side surface of the slot.

[0015] The further improvement of the above technical solution: the through hole is a circular through hole, a square hole, a triangular hole or an oblong hole, and the oblong hole is obliquely arranged.

[0016] Compared with the prior art, the utility model has the following advantages and positive effects:

[0017] 1, the utility model discloses an integral structure, and the bobbin automatically adjusts the circumference with the contraction of the yarn, reduces the difference of the dyeing shrinkage rate of the inner and outer layers of yarn, and improves various indexes such as dyeing layer difference.

[0018] 2. This utility model has the characteristics of simple structure, convenient processing and manufacturing, low cost, and convenient and reliable use. Attached Figure Description

[0019] Figure 1 This is a plan view of Embodiment 1 of the present invention, which describes a variable diameter yarn tube for supercritical anhydrous dyeing.

[0020] Figure 2 This is a front view of Embodiment 1 of the present invention: a variable diameter yarn tube for supercritical anhydrous dyeing.

[0021] Figure 3 This is a top view of Embodiment 1 of the present invention, which describes a variable diameter yarn tube for supercritical anhydrous dyeing.

[0022] Figure 4 yes Figure 3 Sectional view along line AA in the middle;

[0023] Figure 5 This is a plan view of Embodiment 2 of the present invention, which describes a variable diameter yarn tube for supercritical anhydrous dyeing.

[0024] Figure 6 This is a plan view of Embodiment 3 of the present invention, which describes a variable diameter yarn tube for supercritical anhydrous dyeing.

[0025] In the diagram, 1 is a square slider; 2 is an insertion section; 2.1 is a wavy edge; 3 is a round through hole; 4 is a middle section; 5 is a plug-in section; 5.1 is the first bent surface; 5.2 is the second bent surface; 5.2.1 is a through hole; 5.3 is a recess; and 6 is an oblong hole. Detailed Implementation

[0026] See Figures 1-4 This invention relates to an embodiment 1 of a variable diameter yarn tube for supercritical anhydrous dyeing, comprising a stainless steel yarn tube body with through holes. The stainless steel yarn tube body is an integral cylindrical yarn tube formed by rolling a long strip of stainless steel sheet and interlocking its two ends. The long strip of stainless steel sheet includes a middle section 4 and insertion sections 2 and connector sections 5 connected to its two ends. The middle section 4 is rectangular, and its width is smaller than that of the connector section 5. The width of the insertion section 2 is smaller than that of the middle section 4, and the edge of the insertion section 2 has a protrusion. The two sides of the connector section 5 are bent inward to form two slots. The protrusions on the two sides of the insertion section 2 are respectively inserted into the corresponding slots, forming a variable diameter elastic connector structure. Preferably, the protrusions on the edge of the insertion section 2 are square sliders 1.

[0027] Furthermore, the aforementioned slot is a U-shaped groove formed by bending the side of the insertion section 5 twice. The openings of the two U-shaped grooves are arranged opposite each other, and the distance between the bottoms of the two slots is consistent with the width of the middle section 4.

[0028] Specifically, the insertion slot on the insertion section 5 comprises a first bending surface 5.1 and a second bending surface 5.2, the second bending surface 5.2 is connected perpendicularly to the insertion section 5, the first bending surface 5.1 is connected perpendicularly to the second bending surface 5.2, and the first bending surface 5.1 is parallel to the insertion section 5.

[0029] Referring to Figure 5 , the embodiment 2 of the variable-diameter bobbin for supercritical waterless dyeing has the same basic structure as the embodiment 1. The difference is that the protruding part on the edge of the insertion section 2 is a semicircular protrusion 7, and a plurality of through holes 5.2.1 (or recesses) are arranged on the second bending surface 5.2 of the insertion slot, the semicircular protrusion 7 is embedded in the through hole 5.2.1 (or the recess) at an appropriate position on the side surface of the insertion slot, and the positioning of the bobbin in the appropriate diameter size state is realized.

[0030] Referring to Figure 6 , the embodiment 3 of the variable-diameter bobbin for supercritical waterless dyeing has the same basic structure as the embodiment 1. The difference is that the protruding part on the edge of the insertion section 2 is a wavy edge 2.1, and a plurality of recesses 5.3 (or through holes) are arranged on the second bending surface 5.2 of the insertion slot, the semicircular protrusion 7 is embedded in the recess 5.3 (or the through hole) at an appropriate position on the side surface of the insertion slot, and the positioning of the bobbin in the appropriate diameter size state is realized.

[0031] Preferably, the through hole in the embodiments 1, 2 and 3 is a round through hole 3, a square hole, a triangular hole or an oblong hole 6, and the oblong hole 6 is arranged obliquely.

[0032] The bobbin has good support for yarn, and when the bobbin is wound, the yarn can be smoothly wound on the bobbin in the traditional water dyeing mode, and the diameter can match any winding inner tube of a winding machine without the need of customizing the diameter.

[0033] During the dyeing process, the yarn is shrunk under the action of high temperature and high pressure, the part of the staggered layers of the bobbin is relatively displaced under the extrusion of the yarn, and due to the limitation of the insertion slot, the bobbin reduces the bobbin diameter and reduces the tension on the inner layer yarn, so the same shrinkage rate as the outer layer yarn is also obtained.

[0034] The winding tube designed by the utility model is clamped on the winding machine, and winding is carried out according to the set process, the density is set to 400g / dm 3 , the winding thickness is 4cm, the tension is 1.5N, and the completed bobbin is dyed on a sample machine. After dyeing, the yarn is reversed to carry out inner and outer weaving experiments and observe the inner and outer layer difference data.

[0035] The weighing method is used to measure the shrinkage rate of the inner and outer fixed-length yarns.

[0036] The following Table 1 is a comparison of the data of the inner and outer layers of yarn dyeing using the circumference self-adjusting cone and the traditional cone:

[0037] Table 1

[0038]

[0039] The applicant also measured the K / S value of the dyed yarn, and the data of the inner and outer layers of dyeing are shown in Table 2:

[0040] Table 2 also uses 1% owf concentration of disperse red dye

[0041]

[0042] Table 3 is a comparison of the color difference / grade and elasticity of the yarn dyed using the circumference self-adjusting cone and the traditional water-dyed yarn:

[0043] Table 3

[0044]

[0045] The above data shows that the yarn cone of the present application has obvious advantages in the color difference of the inner, middle and outer layers compared with the traditional water-dyed yarn cone.

[0046] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Within the scope of the present application, changes, modifications, additions or substitutions made by those skilled in the art should also be within the scope of the present application.

Claims

1. A variable diameter yarn tube for supercritical anhydrous dyeing, comprising a stainless steel yarn tube body, wherein the stainless steel yarn tube body is provided with through holes, characterized in that, The stainless steel yarn tube body is an integral cylindrical yarn tube formed by rolling a long strip of stainless steel sheet and interlocking the two ends. The long strip of stainless steel sheet includes a middle section and an insertion section and a splicing section connected to its two ends. The middle section is rectangular and its width is smaller than that of the splicing section. The width of the insertion section is smaller than that of the middle section. The edge of the insertion section is provided with a protrusion. The two sides of the splicing section are bent inward to form two slots. The protrusions on the two sides of the insertion section are respectively embedded into the slots on the corresponding sides, forming a flexible splicing structure with a variable diameter.

2. The variable diameter yarn tube for supercritical anhydrous dyeing according to claim 1, characterized in that, The slot is a U-shaped groove formed by bending the side of the plug section twice. The openings of the two U-shaped grooves are arranged opposite each other, and the distance between the bottoms of the two slots is the same as the width of the middle section.

3. The variable diameter yarn tube for supercritical anhydrous dyeing according to claim 2, characterized in that, The slot on the plug segment includes a first bent surface and a second bent surface. The second bent surface is perpendicularly connected to the plug segment, the first bent surface is perpendicularly connected to the second bent surface, and the first bent surface is parallel to the plug segment.

4. The variable diameter yarn tube for supercritical anhydrous dyeing according to any one of claims 1-3, characterized in that, The protrusion on the edge of the insertion segment is a square slider.

5. The variable diameter yarn tube for supercritical anhydrous dyeing according to claim 3, characterized in that, The protrusion on the edge of the insertion section is a semi-circular protrusion. Several through holes or pits are provided on the second bent surface of the slot. The semi-circular protrusion is embedded in the through holes or pits at appropriate positions on the side of the slot to achieve positioning of the yarn tube at an appropriate diameter.

6. The variable diameter yarn tube for supercritical anhydrous dyeing according to claim 3, characterized in that, The protrusion on the edge of the insertion section is a wavy edge, and several pits or through holes are provided on the second bent surface of the slot. The protrusion of the wavy edge is embedded in the pits or through holes at appropriate positions on the side of the slot.

7. The variable diameter yarn tube for supercritical anhydrous dyeing according to any one of claims 1-3, characterized in that, The through hole can be a round through hole, a square hole, a triangular hole, or an oblong hole, with the oblong hole being obliquely oriented.

8. The variable diameter yarn tube for supercritical anhydrous dyeing according to claim 4, characterized in that, The through hole can be a round through hole, a square hole, a triangular hole, or an oblong hole, with the oblong hole being obliquely oriented.

9. The variable diameter yarn tube for supercritical anhydrous dyeing according to claim 4, characterized in that, The through hole can be a round through hole, a square hole, a triangular hole, or an oblong hole, with the oblong hole being obliquely oriented.

10. The variable diameter yarn tube for supercritical anhydrous dyeing according to claim 4, characterized in that, The through hole can be a round through hole, a square hole, a triangular hole, or an oblong hole, with the oblong hole being obliquely oriented.

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