Traceless waistline production device

Abstract

The utility model relates to the technical field of spinning processing equipment, and discloses a traceless waistline production device which comprises a spinning mechanism, a cooling assembly, a tension control assembly and a non-woven fabric composite assembly which are sequentially arranged according to the material flow direction of spandex filaments. The cooling assembly comprises two convection cooling rollers arranged at intervals, each convection cooling roller comprises two rollers arranged in pairs, the temperature of cooling media in the two rollers is gradually increased from an inlet to an outlet, and the flowing directions of the cooling media in the two rollers are opposite. Spandex filaments are sprayed out through the spinning mechanism, then cooled through the cooling assembly, unwound through the tension control assembly and stretched to the required multiplying power, and then non-woven fabric and the spandex filaments are compounded through the non-woven fabric compounding assembly, so that the traceless waistline is manufactured. The production process of the spandex filaments and the production process of the traceless waistline are combined, the stability of the production performance of the spandex filaments is improved, the overall production process is reduced, and the production efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning processing equipment, in particular to a seamless waist production device. Background Art

[0002] The production process of spandex yarn is to polymerize the raw materials into long polymer chains with specific molecular weight and molecular weight distribution through a specific polymerization reaction, and then process them into spandex yarn through a spinning process. In order to improve performance and application value, post-processing processes such as heat setting, stretching, oiling and curling will also be carried out. Finally, it is rolled into a yarn cake and transported to the client for use.

[0003] Seamless waistband manufacturers unwind the wound spandex yarn cakes, stretch them to the required ratio, and then compound them with non-woven fabric sprayed with adhesive to make seamless waistbands. The overall manufacturing process is complicated and inefficient, the spandex combination is time-consuming and inconvenient to replace, and the performance is unstable. Utility Model Content

[0004] The utility model aims to provide a seamless waist production device, which has high production efficiency and produces spandex yarn with higher performance stability.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a seamless waist production device, comprising:

[0006] The spinning mechanism, cooling assembly, tension control assembly and non-woven fabric composite assembly are arranged in sequence according to the flow direction of the spandex yarn;

[0007] The cooling assembly includes two convection cooling rollers arranged at intervals, each of the convection cooling rollers includes two rollers arranged in pairs, and the temperature of the cooling medium in the two rollers gradually increases from the inlet to the outlet, and the cooling medium of the two rollers flows in opposite directions.

[0008] Preferably, a cavity is provided inside the roller, the cooling medium is contained in the cavity, the inlet and outlet of the cooling medium are respectively provided above one end and below the other end of the roller side, and the inlet and outlet of the cooling medium are respectively connected to external pipelines.

[0009] Preferably, a sealing ring is provided between the pipeline and the inlet and outlet of the cooling medium.

[0010] Preferably, a transmission shaft is provided on the roller, and a gear is provided at one end of the transmission shaft away from the roller. The two rollers are connected by a chain for gear transmission, and the output is output through a drive motor.

[0011] Preferably, the spinning mechanism comprises:

[0012] Heating box;

[0013] A screw extruder, the screw extruder is arranged on one side of the heating box, and one end of the screw extruder extends into the heating box;

[0014] A raw material hopper is provided at the raw material inlet of the screw extruder;

[0015] a gear pump, the gear pump being arranged on a side of the heating box opposite to the screw extruder;

[0016] a filter, the filter being arranged between the gear pump and the heating box;

[0017] A spinneret is provided at the outlet of the gear pump, and a plurality of spinneret holes are provided on the spinneret, and the spandex yarns are sprayed from the spinneret holes onto the cooling assembly.

[0018] Preferably, the spinneret is detachably connected to the outlet of the gear pump.

[0019] Preferably, the tension control assembly includes a plurality of tension rollers arranged at intervals.

[0020] Preferably, the non-woven fabric composite assembly includes a seamless upper non-woven fabric pressing roller, a seamless lower non-woven fabric pressing roller, and a composite pressing roller for pressing the upper non-woven fabric, the spandex yarn and the lower non-woven fabric.

[0021] Through this technical solution, spandex yarn is ejected through a spinning mechanism, cooled by a cooling assembly, unwound by a tension control assembly, and stretched to the desired ratio. The non-woven fabric and spandex yarn are then laminated to a non-woven fabric composite assembly to create a seamless waistband. This integration of the spandex yarn production process improves the stability of the spandex yarn's performance, reduces the overall production process, and further improves production efficiency. Cooling the spandex yarn through convection cooling rollers ensures a uniform cooling temperature and more stable performance.

[0022] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 A schematic structural diagram of a seamless waistline production device according to an embodiment of the present invention is shown;

[0025] Figure 2A side view of a seamless waistline production device according to an embodiment of the present invention is shown;

[0026] Figure 3 A schematic diagram showing the water flow direction and temperature change of a convection cooling roller in one embodiment of the present invention is shown;

[0027] Figure 4 A schematic structural diagram of a convection cooling roller according to an embodiment of the present invention is shown;

[0028] Figure 5 A schematic structural diagram of a spinning mechanism according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0029] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0030] Please refer to Figure 1-3 This embodiment provides a seamless waist production device, including a spinning mechanism 1, a cooling component 2, a tension control component 3 and a non-woven fabric composite component 4, which are arranged in sequence according to the flow direction of the spandex yarn.

[0031] In this embodiment, during production, the spinning mechanism 1 extrudes spandex yarn into the cooling assembly 2, which cools the extruded spandex yarn. The yarn is then conveyed through the cooling assembly 2 to the tension control assembly 3, which controls the spandex yarn's tension, thereby adjusting its denier and designing spandex yarns of varying specifications based on product requirements. After being stretched by the tension control assembly 3, the spandex yarn is conveyed to the non-woven fabric composite assembly 4, which composites a layer of seamless non-woven fabric onto each of the spandex yarn's upper and lower surfaces, thereby forming a seamless waistband fabric. This entire process is simpler than conventional production processes, thereby improving production efficiency. Furthermore, the seamless waistband production device in this embodiment integrates the spandex yarn production process with the seamless waistband production process, improving the spandex yarn's stability, reducing the overall production process, and increasing application efficiency. Furthermore, the device can also be directly integrated with diaper production equipment, allowing the resulting seamless elastic waistband to be cut to desired widths, further improving production efficiency.

[0032] Please refer to Figure 3 The cooling assembly 2 includes two convection cooling rollers arranged at intervals, each convection cooling roller includes two rollers 21 arranged in pairs, and the temperature of the cooling medium in the two rollers 21 gradually increases from the inlet to the outlet, and the cooling medium of the two rollers 21 flows in opposite directions.

[0033] The spandex yarns ejected from the spinning mechanism 1 are hot. Conventional cooling methods result in large temperature fluctuations and unstable performance. This embodiment utilizes convection cooling rollers to cool the spandex yarns. The flowing cooling water gradually increases in temperature as it absorbs heat from the yarns, and the opposite cooling water does the same. This results in a uniform cooling temperature for each spandex yarn, resulting in more stable performance. Furthermore, the speed difference between the two convection cooling rollers can be adjusted to perform preliminary stretching on the spandex yarns, increasing their orientation and crystallinity, and improving their strength, ultimately yielding yarns of desired specifications.

[0034] In this embodiment, a cavity is provided inside the roller 21, and a cooling medium is contained in the cavity. The inlet and outlet of the cooling medium are respectively provided above one end and below the other end of the side of the roller 21, and the inlet and outlet of the cooling medium are respectively connected to external pipes. Specifically, condensed water can be used as the cooling medium, and the cavity is an annular cavity. The condensed water is transmitted more smoothly in the annular cavity. The condensed water cools the roller 21, and the surface of the roller 21 cools the spandex yarn, thereby achieving a cooling effect and ensuring stable operation of the equipment. After the condensed water is cooled by the refrigeration equipment, it is transported into the cavity above the roller 21 through a pipe, and then output from the other end of the roller 21 and returned to the refrigeration equipment for secondary use. The size of the pipe is consistent with the size of the cavity of the roller 21, and a sealing ring is provided between the pipe and the inlet and outlet of the cooling medium to ensure sealing.

[0035] Please continue to refer to Figure 3 During the cooling process, the temperature of the cooling medium in the roller 21 gradually increases. In this embodiment, the temperature increases from 3°C to 15°C. Specific temperature changes can be 3°C, 6°C, 9°C, 12°C, and 15°C to better meet the cooling requirements of the spandex yarn, thereby making the performance of the spandex yarn more stable. The specific temperature change depends on the specific cooling situation.

[0036] Please refer to Figure 3 and Figure 4 Roller 21 is equipped with a transmission shaft 22. A gear 23 is mounted on the end of the transmission shaft 22 away from roller 21. A chain 24 connects the two rollers 21 to the gear 23, and the transmission is output by the drive motor. Specifically, the transmission shaft 22 passes through the roller 21 but is not connected to the cavity. Rotary joints are connected to each side of the roller 21, and the connection between the transmission shaft 22 and the roller 21 is fixed by threads. During operation, the drive motor rotates the gear 23, thereby driving the two rollers 21 in relative motion, thereby driving the spandex yarn to flow and cool it.

[0037] Please refer to Figure 5In this embodiment, the spinning mechanism 1 includes a heating box 11, a screw extruder 12, a raw material hopper 13, a gear pump 14, a filter 15, and a spinneret 16. The screw extruder 12 is arranged on one side of the heating box 11, with one end thereof extending into the heating box 11. The raw material hopper 13 is arranged at the raw material inlet of the screw extruder 12. The gear pump 14 is arranged on the side of the heating box 11 opposite to the screw extruder 12. The filter 15 is arranged between the gear pump 14 and the heating box 11. The spinneret 16 is arranged at the outlet of the gear pump 14. The spinneret 16 is provided with a plurality of spinnerets, and the spandex yarn is sprayed from the spinnerets to the cooling assembly 2.

[0038] During operation, the material is first placed in a feed hopper 13. From there, the material enters a screw extruder 12, which processes the material. The material then enters a heating box 11, which heats the material in the extruder 12. The heating box 11 is divided into three heating zones, heating the material in sections. The heated material then enters a filter 15 for filtration. The filtered material then enters a gear pump 14, which also has a heating zone. The material is ejected from the gear pump 14 through the spinneret holes in the spinneret 16 to form spandex yarn. Furthermore, the spinneret 16 is detachably connected to the outlet of the gear pump 14. This allows for replacement of spinnerets 16 with different pore sizes when desired spandex yarns of varying deniers, improving the device's practicality. The size of the spandex yarn bundle is affected by the size of the spinneret holes. Larger spinneret holes produce coarser spandex yarns, while smaller ones produce finer strands. By designing spinneret holes of varying sizes according to product requirements, spandex yarns of varying deniers can be produced.

[0039] Please refer to Figure 1 and Figure 2 The tension control assembly 3 includes a plurality of tension rollers spaced apart. In this embodiment, three tension rollers are provided. By adjusting the speed difference between the tension rollers, the spandex yarn stretching ratio can be adjusted, gradually increasing the stretching ratio to avoid material breakage caused by rapid increase in the stretching ratio, which would affect production. The resulting seamless waistband achieves the desired stretch effect.

[0040] Preferably, the nonwoven composite assembly 4 includes a non-marking upper nonwoven pressure roller 41 and a non-marking lower nonwoven pressure roller 42, positioned above and below the spandex yarns. A composite pressure roller 43 is used to press the upper nonwoven, spandex, and lower nonwoven layers together. The spandex yarns, stretched to a desired stretch, are then composited with the upper and lower nonwoven layers, sprayed with hot melt adhesive. The composite pressure rollers then apply pressure, creating a non-marking waistband material of the desired stretch. This material can then be connected to diaper production equipment for product application. The nonwoven can then be sprayed with hot melt adhesive using a hot melt adhesive dispenser.

[0041] In summary, through the above technical solution, the spandex yarn is ejected through the spinning mechanism 1, cooled by the cooling assembly 2, unwound by the tension control assembly 3, and stretched to the desired ratio. The non-woven fabric and spandex yarn are then laminated to the non-woven fabric composite assembly 4 to form a seamless waistband. This combines the spandex yarn production process with the seamless waistband production process, improves the performance stability of the spandex yarn, reduces the overall production process, and further improves production efficiency. Cooling the spandex yarn using convection cooling rollers ensures a uniform cooling temperature and more stable performance.

[0042] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0043] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A seamless waist production device, characterized in that: include: The spinning mechanism, cooling assembly, tension control assembly and non-woven fabric composite assembly are arranged in sequence according to the flow direction of the spandex yarn; The cooling assembly includes two convection cooling rollers arranged at intervals, each of the convection cooling rollers includes two rollers arranged in pairs, and the temperature of the cooling medium in the two rollers gradually increases from the inlet to the outlet, and the cooling medium of the two rollers flows in opposite directions.

2. The seamless waist production device according to claim 1, characterized in that: A cavity is provided inside the roller, and the cooling medium is accommodated in the cavity. The inlet and outlet of the cooling medium are respectively provided above one end and below the other end of the roller side, and the inlet and outlet of the cooling medium are respectively connected to external pipelines.

3. The seamless waist production device according to claim 2, characterized in that: A sealing ring is provided between the pipeline and the inlet and outlet of the cooling medium.

4. The seamless waist production device according to claim 2, characterized in that: The roller is provided with a transmission shaft, and a gear is provided at one end of the transmission shaft away from the roller. The two rollers are connected by a chain to transmit the gears, and the output is output through a driving motor.

5. The seamless waist production device according to claim 1, characterized in that: The spinning mechanism comprises: Heating box; A screw extruder, the screw extruder is arranged on one side of the heating box, and one end of the screw extruder extends into the heating box; A raw material hopper is provided at the raw material inlet of the screw extruder; a gear pump, the gear pump being arranged on a side of the heating box opposite to the screw extruder; a filter, the filter being arranged between the gear pump and the heating box; A spinneret is provided at the outlet of the gear pump, and a plurality of spinneret holes are provided on the spinneret, and the spandex yarns are sprayed from the spinneret holes onto the cooling assembly.

6. The seamless waist production device according to claim 5, characterized in that: The spinneret is detachably connected to the outlet of the gear pump.

7. The seamless waist production device according to claim 1, characterized in that: The tension control assembly includes a plurality of tension rollers arranged at intervals.

8. The seamless waist production device according to claim 1, characterized in that: The non-woven fabric composite assembly includes a seamless upper non-woven fabric pressing roller, a seamless lower non-woven fabric pressing roller, and a composite pressing roller for pressing the upper non-woven fabric, the spandex yarn and the lower non-woven fabric.

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