Fabric dyeing machine
By using a rotating warp beam and a spiral penetration design with pressurized dye liquor, the problem of uneven dyeing caused by gravity in warp beam dyeing machines is solved, thus improving the uniformity and environmental friendliness of fabric dyeing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-31
AI Technical Summary
Existing warp beam dyeing machines cause abnormal local dye concentration gradients in fabrics due to the influence of gravity during the dye penetration process, resulting in dyeing defects such as "water flow marks" and "loose board marks".
The fabric is uniformly dyed by rotating the warp beam. The hollow structure inside the warp beam and the design of the liquid outlet, combined with the pump mechanism to provide pressurized dye liquor, form a spiral composite penetration, overcome the effect of gravity, and achieve uniform distribution of dye liquor.
It effectively improves dyeing uniformity, fundamentally solves dyeing defects such as "water flow marks" and "pine board marks", and reduces dye usage and wastewater discharge, thereby improving the stability and environmental friendliness of the dyeing process.
Smart Images
Figure CN224063075U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fabric dyeing technology, and in particular to a fabric dyeing machine. Background Technology
[0002] As an important intermittent dyeing device in the modern textile industry, the core principle of the warp beam dyeing machine is to achieve uniform coloring by driving the dye liquor through the fabric layer under pressure. A typical structure uses a hollow warp beam as the dye liquor penetration carrier. The surface of the warp beam is uniformly distributed with an array of micropores. The fabric is wound in a high-density manner around the outer circumference of the warp beam to form a cylindrical roll. During the dyeing process, the pressurized dye liquor is sprayed radially from the inner cavity of the warp beam through the micropores. Under the action of the pressure gradient, it gradually penetrates the fabric layer and finally completes the circulation penetration from the inside to the outside.
[0003] Although this process has the advantage of continuous operation, it is limited by the coupling effect between the fixed warp beam structure and the gravitational field. After the dye liquor penetrates the fabric, it tends to flow downward due to the influence of gravitational acceleration. This asymmetric flow causes abnormal local dye concentration gradients in the fabric, forming dyeing defects such as "water flow marks" and "loose board marks" perpendicular to the warp beam axis. Utility Model Content
[0004] Therefore, the purpose of this utility model is to overcome the problems of uneven dyeing and dyeing defects in existing fabric dyeing technology, and to provide a fabric dyeing machine that uses a rotating warp shaft to drive the fabric to be dyed evenly, fundamentally solving dyeing defects such as "water flow print" and "loose board print".
[0005] To solve the above-mentioned technical problems, this utility model provides a fabric dyeing machine, comprising,
[0006] The cylinder block has an open top.
[0007] A warp beam is used to wind the fabric to be dyed in a flat, tension-free manner. The warp beam is axially hollow, closed at one end, and has a dye liquor inlet at the other end. The hollow interior of the warp beam forms a dye liquor channel that connects to the dye liquor inlet. The surface of the warp beam is arrayed with outlet holes that communicate with the dye liquor channel. The warp beam is rotatably connected to the cylinder body.
[0008] A pumping mechanism that feeds pressurized dye liquor into the dye liquor channel through the dye liquor inlet;
[0009] The pressurized dyeing solution permeates and dyes the fabric through the outlet hole.
[0010] In one embodiment of this utility model, a flow interceptor is provided on the warp beam, which is used to axially intercept the dye liquor in the dye liquor channel; wherein, the axial position of the flow interceptor on the warp beam is related to the width of the fabric to be dyed, and the edge of the outlet hole located inside the flow interceptor is covered by the fabric.
[0011] In one embodiment of the present invention, a sealing sleeve is further included, which is used to block the liquid outlet hole of a portion of the fabric to be dyed according to the width of the fabric.
[0012] In one embodiment of this utility model, the cylinder contains dye liquor, and the warp shaft is located above the surface of the dye liquor and detached from the surface of the dye liquor.
[0013] In one embodiment of this utility model, the fabric to be dyed is located above the surface of the dye liquor and is detached from the surface of the dye liquor.
[0014] In one embodiment of this utility model, the rotational speed of the warp shaft is 0-50 r / min.
[0015] In one embodiment of this utility model, a mounting hole is provided on the cylinder body, and a driver is provided on the outside of the cylinder body near the mounting hole. The closed end of the warp shaft extends axially through the mounting hole and is connected to the power output end of the driver. A graphite seal is provided at the connection point located in the mounting hole. The rotational speed and direction of the warp shaft can be adjusted.
[0016] In one embodiment of this utility model, the pressure of the pressurized dye solution is 0-2 kg.
[0017] In one embodiment of this utility model, the pumping mechanism includes a feeding pipe and a pressure pump. The feeding pipe is connected to the cylinder and the dye liquor inlet. The pressure pump is used to change the pressure of the dye liquor to obtain the pressurized dye liquor.
[0018] In one embodiment of this utility model, a heater is provided at the bottom of the cylinder, and the temperature of the dyeing solution is adjusted by the heater.
[0019] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:
[0020] The fabric dyeing machine of this invention uses centrifugal acceleration generated by the rotation of the shaft to form a pressure component orthogonal to the gravitational field in the radial direction, which expands the dye penetration mode from a single radial direction to a spiral composite penetration mode. The pressure is evenly distributed on the fabric, effectively improving the dyeing uniformity.
[0021] In addition, the rotation of the warp beam causes the fabric to periodically pass through the high-pressure zone (bottom) and the low-pressure zone (top), overcoming the effect of gravity and fundamentally solving the dyeing defects such as "water flow marks" and "loose board marks". Attached Figure Description
[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0023] Figure 1 This is a front view of a preferred embodiment of the fabric dyeing machine of this utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the warp shaft in a preferred embodiment of the present invention;
[0025] Figure 3 This is a schematic diagram of the warp shaft in another embodiment of the present invention.
[0026] Explanation of reference numerals in the accompanying drawings: 1-Fabric; 2-Cylinder body; 4-Warp beam; 41-Outlet hole; 42-Dye liquor inlet; 43-Dye liquor channel; 44-Blocking plate; 45-Sealing sleeve; 6-Driver; 8-Graphite seal; 10-Feeding pipe; 12-Pressure pump; 14-Heater. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.
[0028] Example
[0029] Reference Figure 1 As shown in the figure, this utility model discloses a fabric dyeing machine, including a cylinder 2, in which dye liquor is contained, and fabric dyeing is carried out. It is used for dyeing economical fabrics such as silk, cotton, linen, and wool. The top of the cylinder 2 is open, and the cylinder 2 itself does not require pressure control during the dyeing process; the cylinder 2 is placed in a normal temperature and pressure environment for dyeing. A heater 14 is provided at the bottom of the cylinder 2, through which the temperature of the dye liquor is adjusted. The heater 14 is installed inside the cylinder 2, allowing for zero-temperature-difference control of the dye liquor temperature according to process requirements.
[0030] It also includes a warp beam 4, on which the fabric 1 to be dyed is wound flat and tension-free. Tension-free winding avoids tension-induced limiting stretching, thereby maintaining the porosity and permeability of the fabric and making it easier for the dye liquor to penetrate evenly. At the same time, zero tension can reduce the residual stress generated inside the fabric, which may cause uneven dye adsorption during the dyeing process. It maintains the consistency of the fabric structure, ensures that the penetration rate and amount of the dye liquor are the same in each area, and reduces color difference.
[0031] Reference Figure 2 or Figure 3 As shown, the warp shaft 4 is hollow in the axial direction, closed at one end, and has a dye inlet 42 at the other end; the hollow interior of the warp shaft 4 forms a dye channel 43 that connects to the dye inlet 42; the surface of the warp shaft 4 is arranged with an array of outlet holes 41 that communicate with the dye channel 43; wherein, the warp shaft 4 is rotatably connected to the cylinder 2.
[0032] It also includes a pumping mechanism that feeds pressurized dye liquor into the dye liquor channel through the dye liquor inlet; the pressurized dye liquor exits from the outlet and permeates and dyes the fabric. Specifically, refer to... Figures 1-3 As shown, the pumping mechanism includes a feeding pipe 10 and a pressure pump 12. The feeding pipe 10 is connected to the cylinder 2 and the dye liquor inlet. The pressure of the dye liquor is changed by the pressure pump 12 to obtain the pressurized dye liquor.
[0033] The working process of the fabric dyeing machine is as follows: The fabric to be dyed is wound onto the warp beam 2 with zero tension and in a flat width. The warp beam 2 with the fabric wound on it is then assembled into the dyeing vat. The dye liquor is prepared according to the process requirements and fed into the vat 2. The heater 14 is started, and the temperature of the dye liquor is controlled according to the process requirements. The warp beam rotation drive is started, and the pressure pump 12 is started. The pressure pump 12 pumps the dye liquor required by the process into the inner cavity of the warp beam 2 (i.e., the dye liquor channel 43) and sprays it onto the fabric through the outlet hole 41. The pressurized dye liquor penetrates into the fabric layer by layer from the inside to the outside until the dyeing is completed. The dye liquor that seeps out of the fabric enters the vat 2 for circulation.
[0034] During the dyeing process, the centrifugal acceleration generated by the rotation of shaft 4 creates a pressure component orthogonal to the gravitational field in the radial direction. This expands the dye penetration method from a single radial direction to a spiral composite penetration, resulting in a uniform pressure distribution on the fabric and effectively improving dyeing uniformity. In addition, the rotation of shaft 4 causes the fabric to periodically pass through a high-pressure zone (bottom) and a low-pressure zone (top), overcoming the effect of gravity and fundamentally solving dyeing defects such as "water flow marks" and "loose board marks."
[0035] Furthermore, the warp beam rotation speed is 0-50 r / min. The warp beam rotation speed is adjusted according to the type and density of the fabric, with an upper limit of 50 r / min. The centrifugal force of the warp beam rotation is related to the rotation speed. When the rotation speed exceeds 50 r / min, the centrifugal force will throw the dye liquor off the fabric surface, reducing the penetration depth and affecting the dyeing effect. The dyeing uniformity is optimal when the warp beam rotation speed is controlled at or below 50 r / min.
[0036] The rotational speed of the warp beam is infinitely adjustable within the range of 0-50 r / min. In order to achieve precise speed control, a three-phase four-wire motor controlled by a PLC is used to drive the warp beam to rotate. Gear transmission is used, and the rotational speed of the warp beam is adjusted by controlling the transmission ratio.
[0037] Specifically, the cylinder body 2 is provided with a mounting hole, and a driver 6 is located on the outside of the cylinder body 2 near the mounting hole. One closed end of the warp shaft 4 axially extends through the mounting hole and connects to the power output end of the driver 6. A graphite seal 8 is provided at the connection point located within the mounting hole. The rotational speed and direction of the warp shaft 4 are adjustable. The graphite seal, with its high-temperature resistance, self-lubricating wear resistance, chemical inertness, and long lifespan, solves the pain points of traditional seals in dyeing machines, such as easy leakage, high maintenance, and short lifespan. It is especially suitable for the harsh working conditions of high-speed rotating warp shafts (≤50r / min) and variable pressure dye liquor (0-0.2MPa), providing core assurance for the stability and environmental protection of the dyeing process. Verification through 10,000 hours of continuous operation testing shows that the leakage rate and wear are superior to ISO and industry standards.
[0038] On the other hand, the pressure of the pressurized dye liquor is 0-2 kg (0-0.2 MPa). The pressure of the dye liquor is adjusted according to the pore characteristics, permeability, and fiber composition of the fabric. The 0-2 kg pressure range is suitable for the pore characteristics of most textiles; the upper limit of 2 kg pressure can ensure that the dye liquor pressure is strong enough to reach the critical value of fiber damage, thereby avoiding fiber damage and protecting the fibers.
[0039] As a further improvement of this utility model embodiment, the warp beam 4 is located above and detached from the dye liquor surface. The fabric to be dyed is located above and detached from the dye liquor surface. The fabric dyeing machine of this utility model differs from traditional immersion dyeing machines. Both the warp beam 4 and the fabric are located above and completely detached from the dye liquor surface. The dye liquor level in the cylinder only needs to be controlled to ensure the normal operation of the pressure pump. This significantly reduces the liquor ratio, saves water and steam, reduces the amount of dye auxiliaries used, reduces wastewater discharge, alleviates the burden of downstream wastewater treatment, and truly achieves energy saving, cost reduction, and improved quality.
[0040] In specific applications, pressure must be maintained before the pressurized dye liquor is ejected from the outlet hole 41. To maintain pressure within the dye liquor channel, the edge of the outlet hole along the warp axis 4 should be covered by fabric. To accommodate fabrics of different widths, refer to... Figure 2As shown, the warp beam 4 of this invention is provided with a flow interceptor 44, which is used to axially intercept the dye liquor in the dye liquor channel 43. The axial position of the flow interceptor 44 on the warp beam 4 is related to the width of the fabric to be dyed, and the edge of the outlet hole 41 located inside the flow interceptor 44 is covered by the fabric. The warp beam 4 is designed and manufactured to be appropriately long, for example, to accommodate fabrics with the widest width. When the fabric width is reduced, the flow interceptor 44 is inserted at an appropriate position along the warp beam according to the fabric width, axially intercepting the dye liquor in the dye liquor channel. At this time, the dye liquor inside the flow interceptor 44 in the dye liquor channel maintains pressure, thereby enabling a single warp beam to be compatible with dyeing fabrics of various widths.
[0041] Reference Figure 3 As shown, in another embodiment, a sealing sleeve 45 is also included, which is used to seal the liquid outlet 41 of a portion of the fabric to be dyed according to the width of the fabric. For dyeing fabrics with a small width, by fitting the sealing sleeve 45 over the warp beam 4, the liquid outlet at the edge of the warp beam 4 is sealed, forming the same effect as a baffle plate.
[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A fabric dyeing machine characterized in that: The invention relates to a dyeing machine comprising, a cylinder with an open top; a beam onto which the fabric to be dyed is wound in a flat form and with zero tension; the beam is axially hollow, one end is closed and the other end is provided with a dye inlet; the hollow of the beam forms a dye channel connected to the dye inlet; the surface of the beam is provided with a plurality of dye outlet holes in communication with the dye channel; the beam is rotatably connected to the cylinder; a pumping mechanism which sends pressurized dye into the dye channel through the dye inlet; the pressurized dye is discharged from the dye outlet holes to penetrate and dip the fabric.
2. The fabric dyeing machine of claim 1, wherein: a flow cutoff plate is provided on the beam, which is used to axially cut off the dye in the dye channel; the axial position of the flow cutoff plate on the beam is related to the width of the fabric to be dyed, and the edge of the dye outlet hole inside the flow cutoff plate is covered by the fabric.
3. The fabric dyeing machine of claim 1, wherein: a sealing sleeve is further provided, which is used to block part of the dye outlet holes according to the width of the fabric to be dyed.
4. The fabric dyeing machine according to claim 1 or 2 or 3, characterized in that: the cylinder stores dye, and the beam is located above the liquid level of the dye and separated from the liquid level of the dye.
5. The fabric dyeing machine of claim 4, wherein: the fabric to be dyed is located above the liquid level of the dye and separated from the liquid level of the dye.
6. The fabric dyeing machine of claim 1, wherein: the rotational speed of the beam is 0-50r / min.
7. The fabric dyeing machine according to claim 1 or 6, characterized in that: a mounting hole is provided on the cylinder, a driver is provided outside the cylinder near the mounting hole, the closed end of the beam axially penetrates the mounting hole and is connected to the power output end of the driver, a graphite seal is provided at the connection between the closed end of the beam and the mounting hole, and the rotational speed and direction of the beam can be adjusted.
8. The fabric dyeing machine of claim 1, wherein: the pressure of the pressurized dye is 0-2kg.
9. The fabric dyeing machine according to claim 1 or 8, characterized in that: the pumping mechanism comprises a feeding pipe and a pressure pump, the feeding pipe is connected to the cylinder and the dye inlet, and the pressurized dye is obtained by changing the pressure of the dye through the pressure pump.
10. The fabric dyeing machine of claim 1, wherein: a heater is provided at the bottom of the cylinder to adjust the temperature of the dye.