A production method for improving POY product quality with low energy consumption

Abstract

The invention belongs to the field of spinning processing technology, and relates to a production method for improving the quality of POY products with low energy consumption. When spinning POY yarn, the method uses a detachable network device to make network dots for the POY bottom yarn; the network device includes a network device porcelain part A, a network device porcelain part B, a U-shaped wire guide hook A, a U-shaped wire guide hook B and a slide rail base; the network device porcelain part A is provided with air holes, and the air holes are connected to an air source; the network device porcelain parts A and B are both slidably connected to the slide rail base; when the network device needs to make network dots for the POY yarn, the network device porcelain parts A and B move toward each other and form a wire running channel, the air source is ventilated, and the network device porcelain parts A and B contact and guide the POY yarn; when the network device does not need to make network dots for the POY yarn, the network device porcelain parts A and B move away from each other, the air source is cut off, no air flow is ejected from the air hole, and the network device porcelain parts A and B are separated from the POY yarn. The present invention improves the quality of POY products while ensuring the POY elastic tail rate.

Description

Technical Field

[0001] The invention belongs to the technical field of spinning processing and relates to a production method for improving the quality of POY products with low energy consumption. Background Art

[0002] When polyester POY is texturized, the last yarn (tail yarn) of a POY yarn cake needs to be connected to the yarn head of another spare POY yarn cake so that production can proceed continuously. The process of connecting the two yarn cakes head to tail is usually called tailing. The ratio of yarn cakes that successfully complete the head-to-tail connection without breaking the yarn ends during the tailing process is called the tailing rate (for example, the number of yarn cakes processed in a batch of texturizing machines is M, and the number of yarn cakes that do not break the yarn ends during the tailing process is N, then the calculation formula for the tailing rate of the batch of processed yarns is: tailing rate = N / M). A higher tailing rate can greatly reduce the workload of manual re-heading during texturizing, improve machine efficiency, and reduce the cost of texturizing production.

[0003] There is basically no network requirement in the existing polyester POY production technology, but the POY tow without network points is relatively divergent. During the process of adding elasticity and passing the tail, when the POY yarn cake is used to the end stage, the unwinding angular velocity of the yarn is relatively fast, and the friction between the bottom yarns of the POY yarn cake and between the bottom yarn and the surface of the paper tube is relatively large, which will easily lead to large fluctuations in the yarn tension and even broken yarns, resulting in the problem of tail failure. In particular, some fine and ultra-fine POY varieties have more stringent requirements on production conditions. This effect is very significant during the elasticity and passing the tail. The success rate of the tail is often very low (some 30D POY is generally only about 50%), and in severe cases it is even only about 20-30%. The position with the highest incidence of tail breakage is also mainly in the range of 0~2500 meters at the bottom of the tube, accounting for about 70~80%.

[0004] In order to solve the above problems, patent CN112746363A uses a network device in the prior art to add appropriate network points to POY, improve the cohesion of POY yarns, and increase the rate of over-end texturing. However, after the network device adds a network to the bottom layer of POY cake, the network device will continue to contact and rub with the yarn bundle, resulting in an increase in POY and even DTY products that are subsequently processed. This problem is particularly prominent in fine and ultra-fine POY varieties; and after the network device adds a network to the bottom layer of POY cake, it still continues to ventilate, which also increases energy consumption.

[0005] Therefore, it is of great significance to study a low-energy production method to improve the quality of POY products to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems existing in the prior art and to provide a production method which can improve the POY yarn tail passing rate and ensure the processing performance of the POY yarn while taking into account energy saving and consumption reduction.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A production method for improving the quality of POY products with low energy consumption, wherein when spinning POY yarn, a POY bottom yarn with a starting length of 0 to 70,000 m is netted with a netting device;

[0009] The network device is a detachable network device, including a network device porcelain component A, a network device porcelain component B, a U-shaped wire guide hook A, a U-shaped wire guide hook B and a slide rail base;

[0010] The network device porcelain piece A and the network device porcelain piece B are both vertically placed plate-like structures, and the two are parallel to each other; the network device porcelain piece A is provided with air holes, and the air holes are connected to the air source, and the air holes are used to emit air flow to make network points on the POY wire passing through the network device porcelain piece A and the network device porcelain piece B;

[0011] U-shaped guide wire hook A is connected to the network device porcelain piece A, and U-shaped guide wire hook B is connected to the network device porcelain piece B;

[0012] The network device porcelain component A and the network device porcelain component B are both slidably connected to the slide rail base;

[0013] When the network device needs to make network dots on the POY wire, the network device porcelain parts A and the network device porcelain parts B move toward each other and form a wire running channel, the air source is ventilated, the air holes emit air flow, and the network device porcelain parts A and the network device porcelain parts B contact and guide the POY wire; when the network device does not need to make network dots on the POY wire, the network device porcelain parts A and the network device porcelain parts B move away from each other, the air source is cut off, no air flow is emitted from the air holes, and the network device porcelain parts A and the network device porcelain parts B are separated from the POY wire.

[0014] When the POY wire is dotted, the network device porcelain parts A, B, U-shaped wire guide hook A and B will produce friction on the POY wire. When it is not necessary to dot the POY wire, the network device is moved away and not in contact with the POY wire, which will reduce friction and improve the quality of the POY wire. At the same time, the network device stops ventilating, saving energy and reducing consumption.

[0015] As the preferred technical solution:

[0016] As described above, a production method for improving the quality of POY products with low energy consumption, the network pressure of the network device is 0.8-1.5 bar, the number of network points is 1-10 per meter, and the network points are evenly distributed.

[0017] As described above, a low-energy production method for improving the quality of POY products, the specifications of the POY yarn are 15~88dtex / 8~96f, the POY yarn end-stretching rate is more than 96%; the breaking strength of the POY non-bottom yarn after passing through the network device is 2.5~3.0cN / dtex, and the breaking elongation is 110~130%.

[0018] As described above, in a production method for improving the quality of POY products with low energy consumption, the number of U-shaped wire guide hooks A and U-shaped wire guide hooks B are both 2; the two U-shaped wire guide hooks A are respectively arranged on the upper and lower sides of the network device porcelain component A, and the two U-shaped wire guide hooks B are respectively arranged on the upper and lower sides of the network device porcelain component B.

[0019] A production method for improving the quality of POY products with low energy consumption as described above, wherein the network device also includes a push block, a needle spring cylinder, a base A, a base B, a slider and a connecting rod;

[0020] The slide rail base is placed vertically, and a long strip through hole I, a long strip through hole II and a long strip through hole III are provided on the slide rail base; the two ends of the long strip through hole I are respectively hole opening a and hole opening b, the two ends of the long strip through hole II are respectively hole opening c and hole opening d, and the two ends of the long strip through hole III are respectively hole opening e and hole opening f; hole opening a, hole opening c and hole opening e are on the same vertical plane; hole opening b, hole opening d and hole opening f are on the same vertical plane; the length direction of the long strip through hole I is the vertical direction; the long strip through hole II and the long strip through hole III are symmetrically distributed on the left and right sides of the long strip through hole I, and the distance between the upper end of the long strip through hole II and the upper end of the long strip through hole III is smaller than the distance between the lower end of the long strip through hole II and the lower end of the long strip through hole III;

[0021] The number of sliders is 2, which are denoted as slider I and slider II; the number of connecting rods is 2, which are denoted as connecting rod I and connecting rod II;

[0022] The base A is placed vertically, the base A is fixedly connected to the network device porcelain A, the slider I is located at the front side of the base A, and is fixedly connected to the base A; a through hole A (i.e., a ventilation chamber) is provided on the base A, one end of the through hole A is connected to the air source, and the other end is connected to the air hole;

[0023] The base B is placed vertically, the base B is fixedly connected to the network device porcelain component B, and the slider II is located at the front side of the base B and is fixedly connected to the base B;

[0024] Two U-shaped wire guide hooks A are placed horizontally; two U-shaped wire guide hooks A are respectively arranged on the upper and lower sides of the base A and are fixedly connected to the base A; two U-shaped wire guide hooks B are placed horizontally; two U-shaped wire guide hooks B are respectively arranged on the upper and lower sides of the base B and are fixedly connected to the base B; the network device porcelain piece A and the network device porcelain piece B are opposite and parallel to each other; the opening directions of the U-shaped wire guide hooks A and the U-shaped wire guide hooks B are opposite;

[0025] The push block includes a front push block and a rear push block connected to each other; the height of the push block is less than the length of the long strip through hole I; the rear push block is inserted into the interior of the long strip through hole I from the opening b;

[0026] The lower part of the forward push block is threadedly connected to the free end of the piston rod of the needle spring cylinder, and the air inlet of the needle spring cylinder is connected to the air source. When the air source is ventilated, the needle spring cylinder drives the push block to move upward and keeps the piston rod of the needle spring cylinder at the maximum range. When the air source is cut off, the needle spring cylinder drives the push block to move downward until the piston rod of the needle spring cylinder is at the minimum range. The needle spring cylinder is provided with an exhaust hole, which connects the outside world and the inside of the cylinder. When the air source is ventilated, the gas input into the cylinder is more than the discharged gas, so that the piston in the needle spring cylinder is extended. When the air source is cut off, the gas inside the cylinder is discharged through the exhaust hole, so that the piston in the needle spring cylinder is contracted. The model of the needle spring cylinder is, for example, CJ1B4-5-10-15-20SU.

[0027] The base A is located at the rear of the slide rail base, and the slider I penetrates into the long strip through hole II from the opening c and is exposed from the opening d; the base B is located at the rear of the slide rail base, and the slider II penetrates into the long strip through hole III from the opening e and is exposed from the opening f; the height of the slider I is less than the length of the long strip through hole II, and the height of the slider II is less than the length of the long strip through hole III;

[0028] The two ends of the connecting rod I are respectively connected to the forward push block and the slider I for rotation, and the two ends of the connecting rod II are respectively connected to the forward push block and the slider II for rotation.

[0029] When the air source is ventilated, the needle-type spring cylinder drives the push block to move upward, and the push block drives the slider I and the slider II to move obliquely upward. At this time, the base A and the base B also move obliquely upward, and the distance between the two is reduced, which causes the network device porcelain component A and the network device porcelain component B to move closer to form a wire feeding channel. At the same time, the distance between the U-shaped wire guide hook A and the U-shaped wire guide hook B on the same side is also reduced, and they are intertwined to form a holding point for the POY wire to guide the POY wire; when the air source is cut off, the needle-type spring cylinder drives the push block to move downward, and the push block drives the slider I and the slider II to move obliquely downward. At this time, the base A and the base B also move obliquely downward, and the distance between the two is increased, which causes the network device porcelain component A, the network device porcelain component B, the U-shaped wire guide hook A and the U-shaped wire guide hook B to stay away from the POY wire and not contact it.

[0030] As described above, a low-energy production method for improving the quality of POY products, when the piston rod of the needle spring cylinder is at the maximum range, the spacing between the network device porcelain component A and the network device porcelain component B is 1.0~1.5mm; when the piston rod of the needle spring cylinder is at the minimum range, the spacing between the network device porcelain component A and the network device porcelain component B is 5~6mm.

[0031] As described above, in a production method for improving the quality of POY products with low energy consumption, connecting rod I and connecting rod II are connected to the forward push block through the same fixed pin; connecting rod I is connected to slider I through a fixed pin, and connecting rod II is connected to slider II through a fixed pin.

[0032] As described above, a low-energy production method for improving the quality of POY products, the network device also includes a gas source distributor; the gas source is connected to the through hole A and the needle spring cylinder respectively through the gas source distributor; the gas source distributor is used to control the flow of gas entering the through hole A and the needle spring cylinder respectively.

[0033] A production method for improving the quality of POY products with low energy consumption as described above, wherein the network device is controlled by a network device controller, and the network device controller includes a PLC controller, a solenoid valve and a time relay;

[0034] The solenoid valve is arranged between the gas source and the gas source distributor to control the ventilation and gas cut-off of the gas source;

[0035] The PLC controller is electrically connected to the winding machine, solenoid valve and time relay for winding POY wire respectively; when the winding machine switches the spindle, the winding machine sends a signal to the PLC controller, and the PLC controls the solenoid valve to open and the air source to ventilate; the time relay is used to calculate the opening time of the PLC-controlled solenoid valve. When the opening time of the solenoid valve reaches the set value, the time relay sends a signal to the PLC controller, and the PLC controller closes the solenoid valve and the air source is cut off; the set time is the winding time of the POY bottom wire, and the set time is the length of the POY bottom wire divided by the winding speed, which is generally controlled at 1 to 30 minutes, and the corresponding bottom wire length is about 70,000 meters.

[0036] Beneficial effects:

[0037] (1) In the POY production process, when it is necessary to make a network dot on the POY yarn, the network device of the present invention can be used to drive the network device porcelain A, the network device porcelain B, the U-shaped wire guide hook A and the U-shaped wire guide hook B in the network device to form a complete network device to make a network dot on the POY yarn when the air source is ventilated. When it is not necessary to make a network dot on the POY yarn, the network device and the wire guide hook are moved away from contacting the POY yarn to prevent the yarn bundle and the components of the network device from fuzzing due to continuous friction. At the same time, the network device stops blowing air, thereby improving the POY texturing processing tail rate with very little energy consumption and maintaining the overall good processing performance of the POY yarn (that is, improving the quality of the POY non-bottom yarn), so as to improve the quality of the POY yarn, especially for fine denier and ultra-fine denier POY varieties that are more likely to produce fuzz during the production process. The effect is particularly significant.

[0038] (2) In the POY production process, the present invention can flexibly adjust the intertwining time of the bottom yarn according to the main stage of the tail breakage of the relevant POY product during the texturing process; in addition, when the device of the present invention is shut down, the network device is in a natural separation state, which is convenient for cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the structure of the network device used in the present invention;

[0040] Figure 2 Schematic diagram of the network device used in the present invention in the state of ventilation and non-ventilation when the machine is on; a is a schematic diagram of the network device in the state of non-ventilation when the machine is on, and b is a schematic diagram of the network device in the state of ventilation when the machine is on;

[0041] Figure 3 A schematic diagram of a base A in a network device used in the present invention;

[0042] Figure 4 A schematic diagram of a base B in a network device used in the present invention;

[0043] Figure 5 It is a partial schematic diagram of a network device including a push block used in the present invention;

[0044] Figure 6 It is a schematic diagram of the connection between the push block and the slider in the network device used in the present invention;

[0045] Figure 7 A schematic diagram of a network device porcelain component A in the network device used in the present invention;

[0046] Figure 8 A schematic diagram of a network device porcelain component B in the network device used in the present invention;

[0047] Fig. 9 A schematic diagram of a slide rail base in a network device used in the present invention;

[0048] Fig.10 A schematic diagram of the working system of the network device used in the present invention;

[0049] Among them, 1-network porcelain part A, 2-network porcelain part B, 3-U-type wire guide hook A, 4-U-type wire guide hook B, 5-base A, 6-base B, 7-push block, 8-connecting rod, 9-slider, 10-needle spring cylinder, 11-slide rail base, 12-through hole A, 13-needle spring cylinder air inlet, 14-fixing pin A, 15-fixing pin B, 16-POY wire, 18-air source distributor, 19-solenoid valve, 20-time relay, 21-fixing pin C. DETAILED DESCRIPTION

[0050] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0051] The following are the test methods for the relevant properties in each embodiment and comparative example:

[0052] Breaking strength and breaking elongation: The POY yarns prepared in each embodiment and comparative example were measured using a YG023B-II tensile tester produced by Changzhou Textile Instrument Factory in accordance with GB / T 14344-2022 standard.

[0053] Tail passing rate: The production method in each embodiment is used to calculate according to 384 silk cakes in each batch. The number of silk cakes processed in a batch of the texturing machine is recorded as M, and the number of silk cakes that do not break during the tail passing process is recorded as N. The calculation formula for the tail passing rate of this batch of processed silk is: tail passing rate = N / M.

[0054] Appearance hair rate: Use a manually rotating handlight to visually inspect the two end faces and one column surface of the finished silk cakes one by one, and record the number of hairs on each silk cake respectively. The number of inspected silk cakes is recorded as M, where the number of hairs downgraded is N, and then calculate the appearance hair rate = N / M; among which, the downgrading standards for hairs on each silk cake are: 0.3≤dpf<1.5, the number of hairs on the silk cake>5; 1.5≤dpf<5.0, the number of hairs on the silk cake>2; 5.0≤dpf≤10.0, the number of hairs on the silk cake>0.

[0055] Regarding the post-texturing processing of POY yarn, the texturing machines used in this embodiment and the comparative example are all TMT automatic texturing machines, which are composed of a stretching deformation zone, a shaping zone and a winding zone. The production process of DTY is: raw yarn rack → wire cutter → first roller (FR1) → spinning rod wire guide → first heating box (H1) → cooling plate → false twister → tensioner → second roller (FR2) → network nozzle → second roller A (FR2A) → second heating box (H2) → third roller (FR3) → wire detector (sensor) → oiling wheel → winding forming device.

[0056] A production method for improving the quality of POY products with low energy consumption, when spinning POY yarn, a POY bottom yarn with a starting length of 0 to 70000m is netted with a netting device, such as Figure 1 As shown, the network device includes a network device porcelain part A1, a network device porcelain part B2, a slide rail base 11, an air source distributor, a base A5, a base B6, a U-shaped wire guide hook A3, a U-shaped wire guide hook B4, a slider 9, a push block 7, a needle spring cylinder 10 and a connecting rod 8;

[0057] like Figure 1 , Fig. 9 As shown, the slide rail base 11 is placed vertically, and the slide rail base 11 is provided with a long strip through hole I, a long strip through hole II and a long strip through hole III; the two ends of the long strip through hole I are respectively the hole a and the hole b, the two ends of the long strip through hole II are respectively the hole c and the hole d, and the two ends of the long strip through hole III are respectively the hole e and the hole f; the hole a, the hole c and the hole e are on the same vertical plane; the hole b, the hole d and the hole f are on the same vertical plane; the length direction of the long strip through hole I is the vertical direction; the long strip through hole II and the long strip through hole III are symmetrically distributed on the left and right sides of the long strip through hole I, and the distance between the upper end of the long strip through hole II and the upper end of the long strip through hole III is smaller than the distance between the lower end of the long strip through hole II and the lower end of the long strip through hole III;

[0058] like Figure 1 , Figure 7 , Figure 8 As shown, the network device ceramic component A1 and the network device ceramic component B2 are both vertically placed plate-shaped structures, which are opposite to each other and parallel to each other;

[0059] The network device porcelain piece A1 is provided with two opposite oblique air holes, which are used to emit airflow to make network points on the POY wire passing through the network device porcelain piece A1 and the network device porcelain piece B2;

[0060] like Figure 1 , Figure 3 As shown, the base A5 is placed vertically and fixedly connected to the network device porcelain component A1; a through hole A is provided on the base A5, and one end of the through hole A is connected to the air hole;

[0061] like Figure 1 , 4 As shown, the base B 6 is placed vertically and fixedly connected to the network device porcelain component B 2;

[0062] The number of the U-shaped wire guide hook A 3 and the number of the U-shaped wire guide hook B 4 are both 2, and the opening directions of the U-shaped wire guide hook A 3 and the U-shaped wire guide hook B 4 are opposite;

[0063] Two U-shaped wire guide hooks A 3 are placed horizontally and are fixedly connected to two L-shaped brackets A respectively. The two L-shaped brackets A are respectively arranged on the upper and lower sides of the base A 5 and are fixedly connected to the base A 5;

[0064] Two U-shaped wire guide hooks B 4 are placed horizontally and fixedly connected to two L-shaped brackets B respectively. The two L-shaped brackets B are respectively arranged on the upper and lower sides of the base B 6 and fixedly connected to the base B 6;

[0065] The number of sliders 9 is 2, which are denoted as slider I and slider II;

[0066] The slider I is located at the front side of the base A5, and the slider I is fixedly connected to the base A5; the base A5 is located at the rear of the slide rail base 11, and the slider I passes through the long strip through hole II from the opening c and emerges from the opening d;

[0067] The slider II is located at the front side of the base B 6, and the slider II is fixedly connected to the base B 6; the base B 6 is located at the rear of the slide rail base 11, and the slider II passes through the long strip through hole III from the opening e and emerges from the opening f;

[0068] Along the length direction of the long strip through hole II, the length of the slider I is shorter than the length of the long strip through hole II; along the length direction of the long strip through hole III, the length of the slider II is shorter than the length of the long strip through hole III;

[0069] like Figure 1 , Figure 5 , Figure 6 As shown, the push block 7 includes a front push block and a rear push block connected to each other; the height of the push block 7 is less than the length of the long strip through hole I;

[0070] The push-back block is inserted into the interior of the long strip through hole I from the opening b;

[0071] The lower part of the forward push block is threadedly connected to the free end of the piston rod of the needle spring cylinder 10;

[0072] The number of connecting rods 8 is 2, which are denoted as connecting rod I and connecting rod II;

[0073] The connecting rod I and the connecting rod II are connected to the forward push block through the same fixing pin A 14; the connecting rod I is connected to the slider I through a fixing pin B 15, and the connecting rod II is connected to the slider II through a fixing pin C 21;

[0074] The gas source is connected to the through hole A and the air inlet 13 of the needle spring cylinder respectively through the gas source distributor; the gas source distributor is used to control the flow rate of the gas entering the through hole A and the needle spring cylinder 10 respectively;

[0075] When the air source is on, the needle spring cylinder 10 drives the push block 7 to move upward and keeps the piston rod of the needle spring cylinder 10 at the maximum range; when the air source is off, the needle spring cylinder 10 drives the push block 7 to move downward until the piston rod of the needle spring cylinder 10 is at the minimum range;

[0076] When the piston rod of the needle spring cylinder 10 is at the maximum range, the distance between the network device porcelain piece A1 and the network device porcelain piece B2 is 1.0~1.5mm; when the piston rod of the needle spring cylinder 10 is at the minimum range, the distance between the network device porcelain piece A1 and the network device porcelain piece B2 is 5~6mm;

[0077] like Figure 2As shown in b, when the network device needs to make network dots on the POY yarn 16, the network device porcelain piece A1 and the network device porcelain piece B2 move toward each other and form a wire-running channel, the air source is ventilated, and the air hole ejects the air flow to generate a cross vortex airflow in the network device cavity, rubbing the yarn on the wire path to produce an intertwining effect, and the network device porcelain piece A1 and the network device porcelain piece B2 contact and guide the POY yarn;

[0078] like Figure 2 As shown in a, when the network device does not need to make network dots on the POY wire 16, the network device porcelain piece A1 and the network device porcelain piece B2 move in opposite directions, the air source is cut off, no air flow is emitted from the air hole, and the network device porcelain piece A1 and the network device porcelain piece B2 are separated from the POY wire;

[0079] The network device is controlled by the network device controller, such as Fig.10 As shown, the network device controller includes a PLC controller, a solenoid valve 19 and a time relay 20, and the network device controller is used to control the network device;

[0080] The solenoid valve 19 is arranged between the gas source and the gas source distributor 18, and is used to control the ventilation and gas cut-off of the gas source;

[0081] The PLC controller is electrically connected to the winding machine, the solenoid valve 19 and the time relay 20 for winding the POY yarn respectively; when the winding machine switches the spindle shaft, the winding machine sends a signal to the PLC controller, and the PLC controls the solenoid valve 19 to open and the air source is ventilated;

[0082] The time relay 20 is used to calculate the duration of the PLC-controlled solenoid valve 19 being open. When the duration of the solenoid valve 19 being open reaches the set value, the time relay 20 sends a signal to the PLC controller, and the PLC controller closes the solenoid valve 19, and the air source is cut off; the set duration is the winding duration of the POY bottom layer yarn. Example 1

[0083] A production method for improving the quality of POY products with low energy consumption, using the above-mentioned network device and network device controller, the specific process is as follows:

[0084] First, the above-mentioned network device is placed in the silk path after spinning oiling, and then spinning is started. In the POY non-bottom layer silk production stage, the network device is not ventilated. At this time, the network device porcelain piece A and the network device porcelain piece B and the U-shaped wire guide hook A and the U-shaped wire guide hook B are respectively in a disengaged state, and the POY silk is out of contact with the network device; wherein, the aperture of the air hole in the network device is 0.9 mm, the hole spacing is 2.5 mm, the spacing between the network device porcelain piece A and the network device porcelain piece B is 1.0 mm when the piston rod of the needle spring cylinder is at the maximum range, and the spacing between the network device porcelain piece A and the network device porcelain piece B is 5 mm when the piston rod of the needle spring cylinder is at the minimum range;

[0085] When the POY yarn cake enters the bottom yarn winding stage, it will be accompanied by the switching action of the winding machine. At this time, when the winding machine is switching, the winding machine sends a signal to the PLC controller, the PLC controls the solenoid valve to open, the air source starts to ventilate, and the time relay starts to calculate the opening time of the PLC controlled solenoid valve. When the opening time of the solenoid valve reaches 24 minutes, the time relay sends a signal to the PLC controller, the PLC controller closes the solenoid valve, the air source is cut off, and the network device porcelain parts A and B, U-shaped wire guide hooks A and B are all out of contact with the POY yarn; among them, the specification of the POY yarn on the POY yarn cake is 15dtex / 8f, the starting length of the POY bottom yarn is 0~70000m, the network pressure of the network device is 1.0bar, the network points of the POY bottom yarn are 1~2 / meter, and the network points are evenly distributed.

[0086] The elastic tail rate of POY yarn after the network device is 96%, and the appearance hair rate is 0.43%; the breaking strength of POY bottom yarn after the network device is 2.73cN / dtex, and the elongation at break is 118.6%; the breaking strength of POY non-bottom yarn after the network device is 2.89cN / dtex, and the elongation at break is 121.9%. The corresponding DTY yarn specification is 10dtex / 8f, and the appearance hair rate is 0.93%.

[0087] Comparative Example 1

[0088] A production method for improving the quality of POY yarn products is basically the same as Example 1, except that the network device and network device controller used are the network device and network device controller of patent CN112746363A.

[0089] The POY yarn after the network machine has a texturizing rate of 95% and a hairy appearance rate of 2.45%; the POY bottom yarn after the network machine has a breaking strength of 2.71cN / dtex and a breaking elongation of 118.5%; the POY non-bottom yarn after the network machine has a breaking strength of 2.75cN / dtex and a breaking elongation of 119.5%. The corresponding DTY yarn obtained by texturizing is 10dtex / 8f and has a hairy appearance rate of 1.87%.

[0090] Comparing Comparative Example 1 with Example 1, it can be seen that although both Example 1 and Comparative Example 1 can improve the rate of POY yarn elasticization, the breaking strength and elongation at break of the POY yarn in Comparative Example 1 after passing through the network device are reduced, and the appearance hair rate is increased. This is because the POY yarn of the specification in Example 1 has high requirements for production conditions, and in Comparative Example 1, after the network device adds a network to the POY bottom yarn, the network airflow continues to impact the POY yarn strips, and the ceramic parts related to the network device will continue to contact and rub with the POY yarn, thereby causing the POY yarn to be damaged. Therefore, the breaking strength and elongation at break of the POY yarn in Comparative Example 1 are reduced, and the appearance hair rate of the POY yarn is greatly increased. Under the same elasticization processing conditions, the appearance hair rate of the corresponding DTY yarn is also significantly increased. Example 2

[0091] A production method for improving the quality of POY products with low energy consumption, using the above-mentioned network device and network device controller, the specific process is as follows:

[0092] First, the above-mentioned network device is placed in the silk path after spinning oiling, and then spinning is started. In the POY non-bottom layer silk production stage, the network device is not ventilated. At this time, the network device porcelain parts A and B and the U-shaped wire guide hooks A and B are respectively in a disengaged state, and the POY silk is out of contact with the network device; wherein, the aperture of the air hole in the network device is 1.0 mm, the hole spacing is 2.7 mm, the spacing between the network device porcelain parts A and B is 1.2 mm when the piston rod of the needle spring cylinder is at the maximum range, and the spacing between the network device porcelain parts A and B is 5.5 mm when the piston rod of the needle spring cylinder is at the minimum range;

[0093] When the POY yarn cake enters the bottom yarn winding stage, it will be accompanied by the switching action of the winding machine. At this time, when the winding machine is switching, the winding machine sends a signal to the PLC controller, the PLC controls the solenoid valve to open, the air source starts to ventilate, and the time relay starts to calculate the opening time of the PLC controlled solenoid valve. When the opening time of the solenoid valve reaches 27 minutes, the time relay sends a signal to the PLC controller, the PLC controller closes the solenoid valve, the air source is cut off, and the network device porcelain parts A and B, U-shaped wire guide hooks A and B are all out of contact with the POY yarn; among them, the specification of the POY yarn on the POY yarn cake is 33dtex / 48f, the starting length of the POY bottom yarn is 0~70000m, the network pressure of the network device is 1.1bar, the network points of the POY bottom yarn are 3~5 / meter, and the network points are evenly distributed.

[0094] The POY yarn after the network machine has a texturizing tail rate of 96% and a hairy appearance rate of 1.23%; the POY bottom yarn after the network machine has a breaking strength of 2.69cN / dtex and a breaking elongation of 121.1%; the POY non-bottom yarn after the network machine has a breaking strength of 2.73cN / dtex and a breaking elongation of 121.8%. The corresponding DTY yarn obtained by texturizing is 22dtex / 48f and has a hairy appearance rate of 1.93%. Example 3

[0095] A production method for improving the quality of POY products with low energy consumption, using the above-mentioned network device and network device controller, the specific process is as follows:

[0096] First, the above-mentioned network device is placed in the silk path above the winding machine, and then spinning begins. In the POY non-bottom layer silk production stage, the network device is not ventilated. At this time, the network device porcelain parts A and B and the U-shaped wire guide hooks A and B are respectively in a disengaged state, and the POY silk is out of contact with the network device; wherein, the aperture of the air hole in the network device is 1.2 mm, the hole spacing is 3 mm, the spacing between the network device porcelain parts A and B is 1.5 mm when the piston rod of the needle spring cylinder is at the maximum range, and the spacing between the network device porcelain parts A and B is 6 mm when the piston rod of the needle spring cylinder is at the minimum range;

[0097] When the POY yarn cake enters the bottom yarn winding stage, it will be accompanied by the switching action of the winding machine. At this time, when the winding machine is switching, the winding machine sends a signal to the PLC controller, the PLC controls the solenoid valve to open, the air source starts to ventilate, and the time relay starts to calculate the opening time of the PLC controlled solenoid valve. When the opening time of the solenoid valve reaches 18 minutes, the time relay sends a signal to the PLC controller, the PLC controller closes the solenoid valve, the air source is cut off, and the network device porcelain parts A and B, U-shaped wire guide hooks A and B are all out of contact with the POY yarn; among them, the specification of the POY yarn on the POY yarn cake is 88dtex / 96f, the starting length of the POY bottom yarn is 0~50000m, the network pressure of the network device is 1.0bar, the network points of the POY bottom yarn are 7~10 / meter, and the network points are evenly distributed.

[0098] The POY yarn after the network machine has a texturizing tail rate of 96.8% and a hairy appearance rate of 0.85%; the POY bottom yarn after the network machine has a breaking strength of 2.58cN / dtex and a breaking elongation of 123.2%; the POY non-bottom yarn after the network machine has a breaking strength of 2.75cN / dtex and a breaking elongation of 125.8%. The corresponding DTY yarn obtained by texturizing is 56dtex / 96f and has a hairy appearance rate of 1.51%.

[0099] Comparative Example 2

[0100] A production method for improving the quality of POY yarn products is basically the same as Example 3, except that the network device and network device controller used are the network device and network device controller of patent CN112746363A.

[0101] The POY yarn after the network machine has a texturizing tail rate of 96.5% and a hairy appearance rate of 3.01%; the POY bottom yarn after the network machine has a breaking strength of 2.57cN / dtex and a breaking elongation of 123.3%; the POY non-bottom yarn after the network machine has a breaking strength of 2.62cN / dtex and a breaking elongation of 123.9%. The corresponding DTY yarn obtained by texturizing is 56dtex / 96f and has a hairy appearance rate of 3.08%.

[0102] Comparing Comparative Example 2 with Example 3, it can be seen that although both Example 3 and Comparative Example 2 can improve the rate of POY yarn elasticization, the breaking strength and elongation at break of the POY yarn in Comparative Example 2 after passing through the network device are reduced, and the appearance hair rate is increased. This is because the POY yarn of the specification in Example 3 has higher requirements for production conditions, and in Comparative Example 2, after the network device adds a network to the POY bottom yarn, the network airflow continues to impact the POY yarn, and the ceramic parts related to the network device will continue to contact and rub with the POY yarn, thereby causing the POY yarn to be damaged. Therefore, the breaking strength and elongation at break of the POY yarn in Comparative Example 2 are reduced, and the appearance hair rate of the POY yarn is greatly increased. Under the same elasticization processing conditions, the appearance hair rate of the corresponding DTY yarn is also significantly increased.

Claims

1. A production method for improving the quality of POY products with low energy consumption, characterized in that: When spinning POY yarn, the POY bottom yarn with a starting length of 0~70000m is dotted by a networker; The network device comprises a network device porcelain component A (1), a network device porcelain component B (2), a U-shaped wire guide hook A (3), a U-shaped wire guide hook B (4) and a slide rail base (11); The network device porcelain component A (1) and the network device porcelain component B (2) are both vertically placed plate-like structures, and the two are parallel to each other; the network device porcelain component A (1) is provided with air holes, and the air holes are connected to an air source, and the air holes are used to emit air flow to hit the POY wire passing between the network device porcelain component A (1) and the network device porcelain component B (2) to make a network point; The U-shaped guide wire hook A (3) is connected to the network device porcelain component A (1), and the U-shaped guide wire hook B (4) is connected to the network device porcelain component B (2); The network device porcelain component A (1) and the network device porcelain component B (2) are both slidably connected to the slide rail base (11); When it is necessary to make a network dot on the POY wire, the network device porcelain component A (1) and the network device porcelain component B (2) move toward each other to form a wire running channel, the air source is ventilated, the air hole emits air flow, and the network device porcelain component A (1) and the network device porcelain component B (2) contact and guide the POY wire; when it is not necessary to make a network dot on the POY wire, the network device porcelain component A (1) and the network device porcelain component B (2) move away from each other, the air source is cut off, no air flow is emitted from the air hole, and the network device porcelain component A (1) and the network device porcelain component B (2) are separated from the POY wire.

2. A method for improving the quality of POY products with low energy consumption according to claim 1, characterized in that: The network pressure of the network device is 0.8~1.5bar, the number of network points is 1~10 / meter, and the network points are evenly distributed.

3. A method for improving the quality of POY products with low energy consumption according to claim 2, characterized in that: The specifications of POY yarn are 15~88dtex / 8~96f, and the elastic tail rate of POY yarn is more than 96%; the breaking strength of POY non-bottom yarn after passing through the network device is 2.5~3.0cN / dtex, and the elongation at break is 110~130%.

4. The method for improving the quality of POY products with low energy consumption according to claim 1, characterized in that: The number of the U-shaped wire guide hooks A (3) and the number of the U-shaped wire guide hooks B (4) are both two; the two U-shaped wire guide hooks A (3) are respectively arranged on the upper and lower sides of the network device porcelain component A (1), and the two U-shaped wire guide hooks B (4) are respectively arranged on the upper and lower sides of the network device porcelain component B (2).

5. A method for improving the quality of POY products with low energy consumption according to claim 4, characterized in that: The network device also includes a push block (7), a needle spring cylinder (10), a base A (5), a base B (6), a slider (9) and a connecting rod (8); The slide rail base (11) is placed vertically, and is provided with a long strip through hole I, a long strip through hole II and a long strip through hole III; the two ends of the long strip through hole I are respectively a hole opening a and a hole opening b, the two ends of the long strip through hole II are respectively a hole opening c and a hole opening d, and the two ends of the long strip through hole III are respectively a hole opening e and a hole opening f; the hole opening a, the hole opening c and the hole opening e are on the same vertical plane; the hole opening b, the hole opening d and the hole opening f are on the same vertical plane; the length direction of the long strip through hole I is the vertical direction; the long strip through hole II and the long strip through hole III are symmetrically distributed on the left and right sides of the long strip through hole I, and the distance between the upper end of the long strip through hole II and the upper end of the long strip through hole III is smaller than the distance between the lower end of the long strip through hole II and the lower end of the long strip through hole III; The number of sliders (9) is 2, which are denoted as slider I and slider II; the number of connecting rods (8) is 2, which are denoted as connecting rod I and connecting rod II; The base A (5) is placed vertically, the base A (5) is fixedly connected to the network device porcelain component A (1), the slider I is located at the front side of the base A (5) and is fixedly connected to the base A (5); a through hole A is provided on the base A (5), one end of the through hole A is connected to the air source, and the other end is connected to the air hole; The base B (6) is placed vertically, the base B (6) is fixedly connected to the network device porcelain component B (2), and the slider II is located at the front side of the base B (6) and is fixedly connected to the base B (6); Two U-shaped wire guide hooks A (3) are placed horizontally; the two U-shaped wire guide hooks A (3) are respectively arranged on the upper and lower sides of the base A (5) and are fixedly connected to the base A (5); two U-shaped wire guide hooks B (4) are placed horizontally; the two U-shaped wire guide hooks B (4) are respectively arranged on the upper and lower sides of the base B (6) and are fixedly connected to the base B (6); the network device porcelain component A (1) and the network device porcelain component B (2) are opposite to each other and parallel to each other; the opening directions of the U-shaped wire guide hooks A (3) and the U-shaped wire guide hooks B (4) are opposite to each other; The push block (7) comprises a front push block and a rear push block connected to each other; the height of the push block (7) is less than the length of the long strip through hole I; the rear push block is inserted into the interior of the long strip through hole I from the opening b; The lower part of the forward push block is threadedly connected to the free end of the piston rod of the needle spring cylinder (10), and the air inlet of the needle spring cylinder (10) is connected to the air source; when the air source is ventilated, the needle spring cylinder (10) drives the push block (7) to move upward and keeps the piston rod of the needle spring cylinder (10) at the maximum range; when the air source is cut off, the needle spring cylinder (10) drives the push block (7) to move downward until the piston rod of the needle spring cylinder (10) is at the minimum range; The base A (5) is located at the rear of the slide rail base (11), and the slider I penetrates into the long strip through hole II from the hole c and emerges from the hole d; the base B (6) is located at the rear of the slide rail base (11), and the slider II penetrates into the long strip through hole III from the hole e and emerges from the hole f; along the length direction of the long strip through hole II, the length of the slider I is shorter than the length of the long strip through hole II; along the length direction of the long strip through hole III, the length of the slider II is shorter than the length of the long strip through hole III; The two ends of the connecting rod I are respectively connected to the forward push block and the slider I for rotation, and the two ends of the connecting rod II are respectively connected to the forward push block and the slider II for rotation.

6. A method for improving the quality of POY products with low energy consumption according to claim 5, characterized in that: When the piston rod of the needle spring cylinder (10) is at the maximum range, the distance between the network device porcelain component A (1) and the network device porcelain component B (2) is 1.0 to 1.5 mm; when the piston rod of the needle spring cylinder (10) is at the minimum range, the distance between the network device porcelain component A (1) and the network device porcelain component B (2) is 5 to 6 mm.

7. A method for improving the quality of POY products with low energy consumption according to claim 6, characterized in that: The connecting rod I and the connecting rod II are connected to the forward push block through the same fixed pin; the connecting rod I is connected to the slider I through a fixed pin, and the connecting rod II is connected to the slider II through a fixed pin.

8. A method for improving the quality of POY products with low energy consumption according to claim 7, characterized in that: The network device also includes a gas source distributor; the gas source is connected to the through hole A and the needle spring cylinder (10) respectively through the gas source distributor; the gas source distributor is used to control the flow of gas entering the through hole A and the needle spring cylinder (10) respectively.

9. A method for improving the quality of POY products with low energy consumption according to claim 8, characterized in that: The network device is controlled by a network device controller, which includes a PLC controller, a solenoid valve and a time relay; The solenoid valve is arranged between the gas source and the gas source distributor to control the ventilation and gas cut-off of the gas source; The PLC controller is electrically connected to the winding machine, solenoid valve and time relay for winding POY wire respectively; when the winding machine switches the spindle shaft, the winding machine sends a signal to the PLC controller, and the PLC controls the solenoid valve to open and the air source to ventilate; the time relay is used to calculate the opening time of the PLC-controlled solenoid valve, and when the opening time of the solenoid valve reaches the set value, the time relay sends a signal to the PLC controller, and the PLC controller closes the solenoid valve and cuts off the air source; the set time is the winding time of the POY bottom wire.

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