Polyester yarn shaping equipment

Abstract

The utility model discloses polyester yarn shaping equipment which comprises a bottom plate, a supporting plate, a heat conduction shaping structure, a preheating roller, a high-temperature shaping roller, a slow cooling roller and a yarn guide support. Two supporting plates are arranged on the bottom plate, a heat conduction shaping structure is arranged between the supporting plates, the heat conduction shaping structure comprises a preheating roller, a high-temperature shaping roller and a slow cooling roller, and the preheating roller, the high-temperature shaping roller and the slow cooling roller are sequentially arranged in the running direction of polyester yarn; an independent heating cavity is formed in the preheating roller, multiple stages of temperature control subareas are arranged in the high-temperature shaping roller, and a circulating cooling channel is integrated in the slow cooling roller; according to the utility model, through the gradient temperature field design of the preheating roller, the high-temperature shaping roller and the slow cooling roller, the problem of thermal shock of a single temperature zone is solved, and meanwhile, the effective heat transfer area is increased by adopting the wavy curved surface contact roller.

Description

Technical Field

[0001] This utility model relates to the technical field of polyester filament shaping, and in particular to the technical field of polyester filament shaping equipment. Background Technology

[0002] Polyester yarn is an ideal raw material for knitting or weaving, and is suitable for making clothing fabrics, bedding and decorative products. It has the characteristics of high breaking strength and elastic modulus, excellent heat setting, heat resistance, easy washing and quick drying, comfortable hand feel and soft luster.

[0003] Polyester yarn needs to be heat-set during production to eliminate internal stress and fix the fiber structure. The heat-setting effect directly affects the dimensional stability, strength and elongation properties, and dyeing uniformity of the finished yarn.

[0004] For example, application number CN201922375981.9 discloses a polyester filament heat setting device, including a box body. Several heating rollers are rotatably installed inside the box body with small gaps between them. One end of the box body has an inlet hole, and the other end has an outlet hole. A filter box, a temperature control knob, and a PLC controller are fixedly installed on the box body. A heating box is fixedly installed on one outer wall of the box body. An air pump is fixedly installed below the box body. An air outlet pipe is fixedly embedded in the upper wall of the box body, and an air inlet pipe is fixedly embedded in the lower wall of the box body. The air outlet pipe is connected to one end of the filter box through an air pipe, and the other end of the filter box is connected to one end of the heating box through an air pipe. By setting up the box body, heating rollers, filter box, temperature control knob, PLC controller, air pump, heating box, temperature control knob, and temperature sensor, the contact area between the polyester filament and the heating rollers can be increased, thereby increasing the heat utilization rate of the heating rollers. It can also circulate and heat the air inside the box body, increasing the temperature of the space between the heating rollers.

[0005] For example, application number CN202421484443.8 discloses a heat-setting device for polyester DTY yarn, including a box body. Multiple yarn rollers are arranged alternately and rotatably inside the box body. Circular rings are provided on both sides of the multiple yarn rollers inside the box body. Two electric heating tubes are symmetrically fixed on two of the circular rings. Each circular ring is rotatably mounted on the box body. A driving mechanism is fixed on one of the circular rings. The driving mechanism is fixed on the box body. The two circular rings drive the two electric heating tubes to rotate alternately in both forward and reverse directions. This allows the polyester DTY yarn to pass through the box body without affecting the uniform heating of the air around the polyester DTY yarn by the two electric heating tubes.

[0006] However, all of the above devices have the following drawbacks:

[0007] 1. The above-mentioned device cannot achieve a gradient temperature field for preheating, shaping and slow cooling, which easily leads to hardening of the fiber surface and insufficient internal shaping;

[0008] 2. The limited contact area between the filament bundle and the roller surface results in low heat transfer efficiency and a significant increase in energy consumption. Summary of the Invention

[0009] The purpose of this invention is to solve the problems in the prior art and propose a polyester filament setting device that can solve the problem of single-temperature zone thermal shock through the gradient temperature field design of preheating roller, high-temperature setting roller and slow cooling roller, and at the same time adopt a wave-shaped curved surface contact roller to increase the effective heat transfer area.

[0010] To achieve the above objectives, this utility model proposes a polyester filament setting device, comprising a base plate, support plates, a heat conduction setting structure, a preheating roller, a high-temperature setting roller, a slow cooling roller, and a guide support; the base plate is provided with two support plates, and a heat conduction setting structure is provided between the support plates, the heat conduction setting structure including a preheating roller, a high-temperature setting roller, and a slow cooling roller, the preheating roller, the high-temperature setting roller, and the slow cooling roller being arranged sequentially along the polyester filament running direction; the preheating roller is provided with an independent heating chamber inside, the high-temperature setting roller is configured with multi-level temperature control zones inside, and the slow cooling roller integrates a circulating cooling channel inside; at least one guide support is also provided between the support plates for guiding the filament bundle to adhere to the roller surface.

[0011] Preferably, a curved contact roller is provided between the support plates, the curved contact roller is located between the high-temperature shaping rollers, and the surface of the curved contact roller has a wavy structure.

[0012] Preferably, pressure sensors are installed at both ends of the curved contact roller to monitor the contact pressure between the filament bundle and the roller surface in real time.

[0013] Preferably, the temperature control systems of the preheating roller, the high-temperature setting roller, and the slow cooling roller operate independently, and the temperature gradient is dynamically matched with the glass transition temperature of the polyester filament.

[0014] Preferably, the wire guide bracket is a rotatable ceramic guide wheel, and the surface of the wire guide bracket has a guide groove adapted to the width of the wire bundle.

[0015] Preferably, the curved contact roller is covered with a microporous wear-resistant layer, and the curved contact roller has a heat-conducting medium circulation channel that communicates with the hot roller assembly.

[0016] Preferably, the base plate has two sets of fixed seats at both the front and rear ends. A unwinding roller is arranged between the front fixed seats of the base plate, and a winding roller is arranged between the rear fixed seats of the base plate. A drive motor is installed on the side wall of the rear fixed seat of the base plate, and the output end of the drive motor passes through the side wall of the fixed seat and is connected to the winding roller.

[0017] Preferably, the diameter of the high-temperature shaping roller is larger than that of the preheating roller and the slow cooling roller.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model improves the setting effect through the combined action of a preheating roller, a high-temperature setting roller, and a slow cooling roller. The preheating roller can initially heat up the filament bundle to eliminate internal residual stress, thereby avoiding fiber embrittlement or breakage caused by sudden temperature changes. The high-temperature setting roller rearranges the polyester filament molecular chains by stabilizing the high temperature, achieving permanent setting and thus improving the dimensional stability and shrinkage resistance of the filament bundle. The slow cooling roller gradually reduces the temperature of the filament bundle and fixes the molecular chain structure, thereby preventing surface hardening or internal stress residue caused by sudden cooling, and thus solving the problem of thermal shock in a single temperature zone.

[0020] 2. By adopting a curved contact roller with a wave-shaped structure, this utility model can increase the effective contact area between the filament bundle and the roller surface, thereby improving the uniformity of heat conduction, eliminating defects such as local overheating or insufficient shaping, and thus solving the problems of limited contact area between the filament bundle and the roller surface and low heat conduction efficiency. Attached Figure Description

[0021] Figure 1 This is a front view of a polyester filament setting device according to this utility model;

[0022] Figure 2 This is a schematic diagram of the heat conduction setting structure of a polyester filament setting device according to this utility model;

[0023] Figure 3 This is a schematic diagram of a curved contact roller for a polyester filament setting device according to this utility model;

[0024] Figure 4 This is a schematic diagram of a guide support for a polyester filament shaping device according to this utility model;

[0025] Figure 5 This is a cross-sectional view of the curved contact roller of a polyester filament setting device according to this utility model;

[0026] In the diagram: 1-base plate, 2-support plate, 3-heat conduction shaping structure, 301-preheating roller, 302-high temperature shaping roller, 303-slow cooling roller, 4-guide wire support, 401-guide groove, 5-curved contact roller, 501-microporous wear-resistant layer, 502-circulation channel, 6-pressure sensor, 7-fixed seat, 8-unwinding roller, 9-rewinding roller, 10-drive motor. Detailed Implementation

[0027] See Figures 1 to 5This utility model discloses a polyester filament setting device, comprising a base plate 1, support plates 2, a heat conduction setting structure 3, a preheating roller 301, a high-temperature setting roller 302, a slow cooling roller 303, and a guide support 4. Two support plates 2 are mounted on the base plate 1, and the heat conduction setting structure 3 is positioned between the support plates 2. The heat conduction setting structure 3 includes a preheating roller 301, a high-temperature setting roller 302, and a slow cooling roller 303, arranged sequentially along the polyester filament running direction. The preheating roller 301 has an independent heating chamber inside, the high-temperature setting roller 302 has multi-level temperature control zones inside, and the slow cooling roller 303... The roller 303 integrates a circulating cooling channel; at least one guide bracket 4 is also provided between the support plates 2 to guide the filament bundle to fit the roller surface. The preheating roller 301 can initially heat up the filament bundle to eliminate internal residual stress, thereby avoiding fiber embrittlement or breakage due to sudden temperature changes. The high-temperature setting roller 302 rearranges the polyester filament molecular chains through stable high temperature to achieve permanent setting, thereby improving the dimensional stability and shrinkage resistance of the filament bundle. The slow cooling roller 303 gradually reduces the temperature of the filament bundle and fixes the molecular chain structure, thereby preventing surface hardening or internal stress residue caused by sudden cooling. The guide bracket 4 can force the filament bundle to maintain stable contact with the roller surface to avoid heat loss.

[0028] See Figure 2 and Figure 3 A curved contact roller 5 is provided between the support plates 2. The curved contact roller 5 is located between the high-temperature shaping rollers 302. The surface of the curved contact roller 5 has a wave-shaped structure, which can increase the effective contact area between the filament bundle and the roller surface, thereby improving the uniformity of heat conduction and eliminating defects such as local overheating or insufficient shaping.

[0029] See Figure 3 Pressure sensors 6 are installed at both ends of the curved contact roller 5 to monitor the contact pressure between the filament bundle and the roller surface in real time and provide real-time feedback on the bonding status between the filament bundle and the roller surface.

[0030] See Figure 1 The temperature control systems of the preheating roller 301, the high-temperature setting roller 302, and the slow cooling roller 303 operate independently, and the temperature gradient is dynamically matched with the glass transition temperature of the polyester filament. This allows for individual adjustment of the temperature of each roller, avoiding thermal field interference. At the same time, the temperature curve is dynamically adjusted according to the thermodynamic characteristics of the polyester filament, so that the heat input accurately corresponds to the molecular chain activation energy threshold.

[0031] See Figure 4 The wire guide bracket 4 is a rotatable ceramic guide wheel. The surface of the wire guide bracket 4 has a guide groove 401 that is adapted to the width of the wire bundle. Rolling friction replaces sliding friction, reducing wear on the surface of the wire bundle. The guide groove 401 constrains the lateral displacement of the wire bundle, ensuring the consistency of the heat conduction path.

[0032] See Figure 5The curved contact roller 5 is covered with a microporous wear-resistant layer 501, and the curved contact roller 5 is provided with a heat-conducting medium circulation channel 502 that is connected to the hot roller group. The surface microstructure enhances the heat radiation efficiency, reduces roller surface wear, and shares the heat source with the main hot roller group to achieve a composite heat transfer of contact conduction and medium convection.

[0033] See Figure 1 The base plate 1 has two sets of fixed seats 7 at both the front and rear ends. A unwinding roller 8 is rotated between the front fixed seats 7 of the base plate 1, and a winding roller 9 is rotated between the rear fixed seats 7 of the base plate 1. A drive motor 10 is installed on the side wall of the rear fixed seat 7 of the base plate 1. The output end of the drive motor 10 passes through the side wall of the fixed seat 7 and is connected to the winding roller 9. The input end of the drive motor 10 is connected to an external power source. The drive motor 10 drives the winding roller 9 to rotate, thereby driving the yarn bundle to be shaped and gradually completed to complete the winding.

[0034] See Figure 2 The diameter of the high-temperature setting roller 302 is larger than that of the preheating roller 301 and the slow cooling roller 303, which can extend the wrapping arc length of the filament in the high-temperature zone and increase the heat treatment time.

[0035] The working process of this utility model:

[0036] In the operation of this polyester filament setting device, the filament bundle to be set is first wound onto the unwinding roller 8. Then, the head of the filament bundle is pulled over the preheating roller 301, the high-temperature setting roller 302, and the slow cooling roller 303 in sequence and wound onto the take-up roller 9. The take-up roller 9 is driven to rotate by the drive motor 10, which in turn drives the filament bundle to move. This allows the preheating roller 301 to initially heat up the filament bundle and eliminate internal residual stress, thereby avoiding fiber embrittlement or breakage due to sudden temperature changes. The high-temperature setting roller 302 rearranges the polyester filament molecular chains through stable high temperature, achieving permanent setting, thereby improving the dimensional stability and shrinkage resistance of the filament bundle. The slow cooling roller 303 gradually reduces the temperature of the filament bundle and fixes the molecular chain structure, thereby preventing surface hardening or internal stress residue caused by sudden cooling. The guide bracket 4 can force the filament bundle to maintain stable contact with the roller surface and avoid heat loss.

[0037] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0038] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A polyester filament setting device, characterized in that: The device includes a base plate (1), support plates (2), a heat conduction shaping structure (3), a preheating roller (301), a high-temperature shaping roller (302), a slow cooling roller (303), and a guide bracket (4). The base plate (1) is provided with two support plates (2), and the heat conduction shaping structure (3) is provided between the support plates (2). The heat conduction shaping structure (3) includes a preheating roller (301), a high-temperature shaping roller (302), and a slow cooling roller (303). The preheating roller (301), the high-temperature shaping roller (302), and the slow cooling roller (303) are arranged in sequence along the polyester filament running direction. The preheating roller (301) is provided with an independent heating cavity. The high-temperature shaping roller (302) is provided with a multi-level temperature control zone. The slow cooling roller (303) is provided with an integrated circulating cooling channel. At least one guide bracket (4) is also provided between the support plates (2) to guide the filament bundle to adhere to the roller surface.

2. The polyester filament setting equipment as described in claim 1, characterized in that: A curved contact roller (5) is provided between the support plates (2). The curved contact roller (5) is located between the high-temperature shaping rollers (302). The surface of the curved contact roller (5) has a wave-shaped structure.

3. The polyester filament setting equipment as described in claim 2, characterized in that: Pressure sensors (6) are installed at both ends of the curved contact roller (5) to monitor the contact pressure between the filament bundle and the roller surface in real time.

4. The polyester filament setting equipment as described in claim 1, characterized in that: The temperature control systems of the preheating roller (301), the high-temperature setting roller (302), and the slow cooling roller (303) operate independently, and the temperature gradient is dynamically matched with the glass transition temperature of the polyester filament.

5. The polyester filament setting equipment as described in claim 1, characterized in that: The wire guide bracket (4) is a rotatable ceramic guide wheel, and a guide groove (401) adapted to the width of the wire bundle is opened on the surface of the wire guide bracket (4).

6. The polyester filament setting equipment as described in claim 2, characterized in that: The surface of the curved contact roller (5) is covered with a microporous wear-resistant layer (501), and the interior of the curved contact roller (5) is provided with a heat-conducting medium circulation channel (502) that is connected to the hot roller group.

7. The polyester filament setting equipment as described in claim 1, characterized in that: The base plate (1) is provided with two sets of fixed seats (7) at both the front and rear ends. A unwinding roller (8) is provided between the front fixed seats (7) of the base plate (1), and a winding roller (9) is provided between the rear fixed seats (7) of the base plate (1). A drive motor (10) is installed on the side wall of the rear fixed seat (7) of the base plate (1). The output end of the drive motor (10) passes through the side wall of the fixed seat (7) and is connected to the winding roller (9).

8. The polyester filament setting equipment as described in claim 1, characterized in that: The diameter of the high-temperature shaping roller (302) is larger than that of the preheating roller (301) and the slow cooling roller (303).

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