Processing method of polyester industrial yarn

Abstract

The invention belongs to the technical field of polyester production, and relates to a method for processing polyester industrial yarns, which comprises the following steps of: additionally arranging a double-yarn-moving cam yarn guide in front of a main interlacer; the double-yarn-moving-cam yarn guide comprises an upper supporting rod, a lower supporting rod, a driving device and two push rod yarn guides. The upper supporting rod and the lower supporting rod are parallel to the left-right direction, the upper supporting rod is located above the lower supporting rod, and the upper supporting rod and the lower supporting rod are arranged at intervals; the driving device synchronously drives the upper supporting rod and the lower supporting rod to move in the left-right direction at equal displacement in the opposite direction, and the change curve of the displacement of the upper supporting rod along with time is a sine curve. The two push rod yarn guides are parallel to each other and connected with the upper supporting rod and the lower supporting rod respectively. According to the processing method of the polyester industrial yarns, the tension of the yarns in front of the main interlacer is reduced, the air pressure and the air consumption of the main interlacer are reduced, and the problems of broken yarns and looped yarns of the polyester industrial yarns are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of polyester production and relates to a method for processing polyester industrial yarn. Background Art

[0002] Polyester industrial yarn refers to high-strength, coarse-denier polyester industrial filament, which has the advantages of high strength, large modulus, small elongation, good heat resistance, impact resistance, and good fatigue resistance. It is a good material for rubber skeletons of many industrial textiles and is widely used in industrial fabrics, cord fabrics, advertising light box fabrics, building mold structure materials, airbags, conveyor belts and other reinforcing materials.

[0003] At present, in order to increase the bundling of yarns, the compactness of filaments and the downstream weaving efficiency, polyester industrial yarns are networked after the shaping rollers. The tension before the network nozzle of polyester industrial yarns is 210cN, and the air pressure of the main network device needs to reach 2.0-5.0bar, resulting in a large amount of gas consumption. In addition, when the air pressure is too high, hairy yarns and looped yarns are prone to occur.

[0004] To solve the above problems, patent application CN106467986A discloses a modified nylon fiber production process. During the processing of industrial yarn, the yarn is stretched three times after oiling. The wire guide plate is matched with the stretching roller. The yarn is wound around the stretching roller and the wire guide plate. The function of the wire guide plate is to prevent the yarn from slipping and changing direction during stretching. However, this technical solution still has the problems of high air pressure and hairy yarn.

[0005] Patent application CN103849972A discloses a new type of main network device, which increases the network point without increasing energy consumption. The wire guide on the nozzle is used to position the wire so that the wire can pass through the nozzle stably. However, the wire is in contact with the wire guide for a long time, resulting in serious grooves on the surface of the wire guide. When the wire passes through the wire guide with grooves, the single wire will be damaged and broken, causing problems such as hairy wires and looped wires.

[0006] Patent application CN107142535A discloses a spinning winding device and a spinning winding device. The yarn guide before the pre-network device is used to change the direction of the yarn, which will not affect the air pressure of the main network device. There are still problems such as large gas consumption and lint in the yarn.

[0007] Therefore, in view of the problems of high air pressure, large air consumption, hairy and looped yarns in the prior art, it is necessary to develop a new processing method for polyester industrial yarn. Summary of the invention

[0008] The purpose of the present invention is to solve the above problems existing in the prior art and provide a method for processing polyester industrial yarn.

[0009] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0010] A method for processing polyester industrial yarn, comprising installing a double-thread-moving cam thread guide in front of a main web-spinner;

[0011] The double-wire-moving cam wire guide includes an upper support rod, a lower support rod, a driving device, and two push rod wire guides;

[0012] The upper support rod and the lower support rod are parallel to the left and right directions, the upper support rod is located above the lower support rod and the two are arranged at a distance;

[0013] The driving device drives the upper support rod and the lower support rod to move in the left and right directions synchronously and in opposite directions with equal displacement, and the curve of the displacement of the upper support rod changing with time is a sine curve;

[0014] The two push rod wire guides are parallel to each other and are respectively connected to the upper support rod and the lower support rod.

[0015] The present invention installs a double-wire-shifting cam guide in front of the main interlacing device of the polyester industrial yarn, and utilizes the friction force of the double-wire-shifting cam guide to reduce the tension of the yarn when the yarn is interlaced, thereby changing the tension of the yarn in motion, making the tension and tension of the interlacing area small, facilitating effective interlacing, reducing the interlacing air pressure, and improving the conditions of hairy yarns and looped yarns of the polyester industrial yarn.

[0016] Polyester industrial yarn has the characteristics of large fineness and high strength. If other yarn guides are used, after a long contact time, serious grooves will be generated on the surface of the yarn guide. When the yarn passes through the yarn guide, the single yarn will be damaged and broken, causing problems such as hairy yarn and looped yarn on the product appearance. In order to solve this problem, the present invention designs a double-wire cam yarn guide. The two push rod yarn guides move synchronously in the left and right directions with equal displacement and in opposite directions, extending and retracting to form an alternating state. In this way, the overall wrap angle of the yarn can be kept roughly unchanged while the wear of the yarn reaches a very small state, thereby avoiding the yarn hair abnormality caused by the yarn wear of the yarn guide under the action of high tension. After the yarn passes through the yarn guide, the tension is reduced before the main network, which is conducive to reducing the air pressure of the main network, and it is improved to improve the hair of industrial yarn loops.

[0017] As the preferred technical solution:

[0018] In the above-mentioned method for processing polyester industrial yarn, the driving device comprises a driving shaft, an upper cam, a lower cam, an upper bearing, an upper vertical rod, a lower bearing, a lower vertical rod, an upper guide block, and a lower guide block;

[0019] The drive shaft is arranged vertically, the upper end is eccentrically connected to the upper cam, and the lower end is eccentrically connected to the lower cam; the diameters of the upper cam and the lower cam are the same; the central axes of the upper cam, the drive shaft, and the lower cam are arranged at equal intervals from left to right;

[0020] An upper annular groove is provided on the upper surface of the upper cam, and the upper bearing is arranged vertically and embedded in the upper annular groove. When the driving shaft drives the upper cam to rotate, the upper bearing is always located at the leftmost end of the upper annular groove; the lower end of the upper vertical rod is inserted into the upper bearing, and the upper end is fixedly connected to the left end of the upper support rod;

[0021] A lower annular groove is provided on the lower surface of the lower cam, and the lower bearing is arranged vertically and embedded in the lower annular groove. When the driving shaft drives the lower cam to rotate, the lower bearing is always located at the leftmost end of the lower annular groove; the upper end of the lower vertical rod is inserted into the lower bearing, and the lower end is fixedly connected to the left end of the lower support rod;

[0022] The upper support rod passes through the upper guide block and is guided by the upper guide block to move in the left and right directions; the lower support rod passes through the lower guide block and is guided by the lower guide block to move in the left and right directions.

[0023] In the above-mentioned method for processing polyester industrial yarn, the driving device also includes a driving chain and a servo motor, the output shaft of the servo motor is arranged vertically and spaced apart from the driving shaft, and the driving chain is simultaneously sleeved on the output shaft and the driving shaft of the servo motor.

[0024] In the above-mentioned method for processing polyester industrial yarn, the friction coefficient of the push rod wire guide is 0.2-0.7, the wire moving distance is 20 mm, and the wrap angle of the yarn on the push rod wire guide and the horizontal line is 45-90°.

[0025] The processing method of a polyester industrial yarn as described above has the overall process flow of: melt extrusion → cooling → oiling → first hot box heating → second hot box heating → third hot box heating → fourth hot box heating → fifth hot box heating → double wire shifting cam wire guide for wire guiding → main network device adding network → winding roller winding, wherein the first hot box is provided with a first wire separation roller SR1 and a first hot roller GR1, the second hot box is provided with a second wire separation roller SR2 and a second hot roller GR2, the third hot box is provided with a third wire separation roller SR3 and a third hot roller GR3, the fourth hot box is provided with a fourth wire separation roller SR4 and a fourth hot roller GR4, and the fifth hot box is provided with a fifth wire separation roller SR5 and a fifth hot roller GR5.

[0026] In the processing method of polyester industrial yarn as described above, the double-wire-shifting cam guide can reduce the tension before the main network and reduce the pressure of the main network device. The pressure of the main network device is 1.5-4.0 bar, which is significantly lower than the air pressure of 2.0-5.0 bar of the main network device in the prior art.

[0027] The polyester industrial yarn processing method as described above has a linear density of 1100-5000 dtex, a total number of end hair yarns and loop yarns of no more than 2, and a service life of the push rod yarn guide of 4 years.

[0028] Beneficial effects:

[0029] (1) The processing method of polyester industrial yarn of the present invention reduces the tension of the yarn in front of the main network device through the friction between the yarn and the double-wire-shifting cam yarn guide, thereby reducing the air pressure and air consumption of the main network device, thereby improving the problems of lint and loop yarn of polyester industrial yarn.

[0030] (2) The processing method of the polyester industrial yarn of the present invention has simple steps and is not only applicable to the position before the main network device of the polyester industrial yarn, but also to other processing positions of the polyester industrial yarn, and is also applicable to the processing of polyester civilian yarn, nylon, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of the processing method of polyester industrial yarn of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the double-wire-moving cam wire guide of the present invention;

[0033] Figure 3 It is a schematic diagram of the positions of the upper cam and the lower cam of the double-wire-moving cam wire guide of the present invention when they are rotating;

[0034] Figure 4 It is a schematic structural diagram of a driving shaft of a double-wire-moving cam wire guide of the present invention;

[0035] Figure 5 Schematic diagram of wire guiding of the double wire-moving cam wire guide of the present invention;

[0036] In the figure, 1 is an upper support rod, 2 is a lower support rod, 3 is an upper guide block, 4 is an upper cam, 5 is a drive shaft, 6 is a drive chain, 7 is a servo motor, 8 is a lower cam, 9 is a lower guide block, 10 is a push rod wire guide, 11 is an upper bearing, 12 is a lower bearing, 13 is an upper vertical rod, 14 is a lower vertical rod, 15 is a fifth heat box, and 16 is a main network device. DETAILED DESCRIPTION

[0037] 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.

[0038] The following are the test methods for the relevant performance indicators in each embodiment and comparative example:

[0039] (1) Detection method of linear density of polyester industrial yarn:

[0040] The test was carried out in accordance with GB / T 14343-2008 standard “Test method for linear density of chemical fiber filaments”, wherein the test temperature was 25°C and the test relative humidity was 65%.

[0041] (2) Detection method for the total number of end hairs and loops of polyester industrial yarn:

[0042] The inspectors used a flashlight to inspect the end face of the yarn cake (width 120 mm) of polyester industrial yarn (weight 10 kg). The loop length less than 5 mm was ignored, and the calculation started from the loop length ≥ 5 mm. The total number of hairy yarns and loops on the end face was counted.

[0043] (3) Calculation method of the service life of the push rod wire guide:

[0044] The timing starts from the start of the push rod wire guide and ends when grooves are formed on the surface of the push rod wire guide and the total number of end hairs and loops of the polyester industrial yarn is greater than 2. The obtained time is taken as the usage cycle, in years.

[0045] Example 1

[0046] like Figure 1 A processing method for polyester industrial yarn is shown, and the process flow is: melt extrusion → cooling → oiling → heating in the first hot box → heating in the second hot box → heating in the third hot box → heating in the fourth hot box → heating in the fifth hot box 15 → guiding with a double-wire-shifting cam guide → network addition in the main network device 16 → winding with a winding roller, wherein the first hot box is provided with a first wire-separating roller SR1 and a first hot roller GR1, the second hot box is provided with a second wire-separating roller SR2 and a second hot roller GR2, the third hot box is provided with a third wire-separating roller SR3 and a third hot roller GR3, the fourth hot box is provided with a fourth wire-separating roller SR4 and a fourth hot roller GR4, the fifth hot box 15 is provided with a fifth wire-separating roller SR5 and a fifth hot roller GR5, the pressure of the main network device 16 is 4.0 bar, and polyester industrial yarn is obtained.

[0047] like Figure 2-Figure 5 As shown, the double-wire-moving cam wire guide is composed of an upper support rod 1, a lower support rod 2, a driving device, and two push rod wire guides 10;

[0048] The upper support rod 1 and the lower support rod 2 are parallel to the left and right directions, the upper support rod 1 is located above the lower support rod 2 and the two are arranged at a distance;

[0049] Two push rod wire guides 10 are parallel to each other and are connected to the upper support rod 1 and the lower support rod 2 respectively;

[0050] The driving device is composed of a driving shaft 5, a driving chain 6, an upper cam 4, a lower cam 8, an upper bearing 11, an upper vertical rod 13, a lower bearing 12, a lower vertical rod 14, an upper guide block 3, a lower guide block 9 and a servo motor 7;

[0051] The drive shaft 5 is arranged vertically, with the upper end eccentrically connected to the upper cam 4 and the lower end eccentrically connected to the lower cam 8; the diameters of the upper cam 4 and the lower cam 8 are the same; the central axes of the upper cam 4, the drive shaft 5 and the lower cam 8 are arranged at equal intervals from left to right;

[0052] An upper annular groove is provided on the upper surface of the upper cam 4, and an upper bearing 11 is arranged vertically and embedded in the upper annular groove. When the driving shaft 5 drives the upper cam 4 to rotate, the upper bearing 11 is always located at the leftmost end of the upper annular groove; the lower end of the upper vertical rod 13 is inserted into the upper bearing 11, and the upper end is fixedly connected to the left end of the upper support rod 1;

[0053] A lower annular groove is provided on the lower surface of the lower cam 8, and a lower bearing 12 is arranged vertically and embedded in the lower annular groove. When the driving shaft 5 drives the lower cam 8 to rotate, the lower bearing 12 is always located at the leftmost end of the lower annular groove; the upper end of the lower vertical rod 14 is inserted into the lower bearing 12, and the lower end is fixedly connected to the left end of the lower support rod 2;

[0054] The upper support rod 1 passes through the upper guide block 3 and is guided by the upper guide block 3 to move in the left-right direction; the lower support rod 2 passes through the lower guide block 9 and is guided by the lower guide block 9 to move in the left-right direction;

[0055] The output shaft of the servo motor 7 is arranged vertically and spaced apart from the drive shaft 5, and the drive chain 6 is simultaneously sleeved on the output shaft of the servo motor 7 and the drive shaft 5;

[0056] The friction coefficient of the push rod wire guide 10 is 0.4, the wire moving distance is 20 mm, and the wrap angle of the wire strip on the push rod wire guide 10 and the horizontal line is 45°;

[0057] The driving device drives the upper support rod 1 and the lower support rod 2 to move in the left and right directions synchronously with equal displacement and in opposite directions. The curve of the displacement of the upper support rod 1 changing with time is a sine curve.

[0058] The linear density of the polyester industrial yarn finally produced is 5000 dtex, the total number of end hairs and loops is 0, and the service life of the push rod guide is 4 years.

[0059] Comparative Example 1

[0060] A method for processing polyester industrial yarn is basically the same as that of Example 1, except that the entire part of the double-wire-shifting cam wire guide except for two push rod wire guides is replaced by a fixed frame, and the two push rod wire guides are fixed on the fixed frame.

[0061] The linear density of the polyester industrial yarn finally obtained is 5000 dtex, the total number of end hair yarns and loop yarns is 3, and the service life of the push rod yarn guide is 1.5 years.

[0062] Comparing Comparative Example 1 with Example 1, the total number of end face hair and loop wires of Example 1 is significantly reduced, and the service life of the push rod wire guide is also significantly extended, indicating that moving the upper support rod and the lower support rod in the left and right directions is more conducive to reducing the total number of end face hair and loop wires and improving the service life of the push rod wire guide than not moving the upper support rod and the lower support rod in the left and right directions.

[0063] Comparative Example 2

[0064] A method for processing polyester industrial yarn is basically the same as that of Example 1, except that in a double-wire-moving cam yarn guide, the central axes of the upper cam and the lower cam coincide, and a driving device synchronously drives the upper support rod and the lower support rod to move in the left and right directions with equal displacement and in the same direction.

[0065] The linear density of the polyester industrial yarn finally obtained is 5000 dtex, the total number of end hair yarns and loop yarns is 3, and the service life of the push rod yarn guide is 2 years.

[0066] Comparing Comparative Example 2 with Example 1, the total number of end face hair and loop wires of Example 1 is significantly reduced, and the service life of the push rod wire guide is also significantly extended, indicating that the upper support rod and the lower support rod move in opposite directions in the left and right directions, which is more conducive to reducing the total number of end face hair and loop wires and improving the service life of the push rod wire guide than the upper support rod and the lower support rod move in the same direction in the left and right directions.

[0067] Example 2

[0068] like Figure 1 A processing method for polyester industrial yarn is shown, and the process flow is: melt extrusion → cooling → oiling → heating in the first hot box → heating in the second hot box → heating in the third hot box → heating in the fourth hot box → heating in the fifth hot box 15 → guiding with a double-wire-moving cam guide → network addition in the main network device 16 → winding with a winding roller, wherein the first hot box is provided with a first wire separation roller SR1 and a first hot roller GR1, the second hot box is provided with a second wire separation roller SR2 and a second hot roller GR2, the third hot box is provided with a third wire separation roller SR3 and a third hot roller GR3, the fourth hot box is provided with a fourth wire separation roller SR4 and a fourth hot roller GR4, the fifth hot box 15 is provided with a fifth wire separation roller SR5 and a fifth hot roller GR5, the pressure of the main network device 16 is 3.5 bar, and polyester industrial yarn is obtained.

[0069] like Figure 2-Figure 5 As shown, the double-wire-moving cam wire guide is composed of an upper support rod 1, a lower support rod 2, a driving device, and two push rod wire guides 10;

[0070] The upper support rod 1 and the lower support rod 2 are parallel to the left and right directions, the upper support rod 1 is located above the lower support rod 2 and the two are arranged at a distance;

[0071] Two push rod wire guides 10 are parallel to each other and are connected to the upper support rod 1 and the lower support rod 2 respectively;

[0072] The driving device is composed of a driving shaft 5, a driving chain 6, an upper cam 4, a lower cam 8, an upper bearing 11, an upper vertical rod 13, a lower bearing 12, a lower vertical rod 14, an upper guide block 3, a lower guide block 9 and a servo motor 7;

[0073] The drive shaft 5 is arranged vertically, with the upper end eccentrically connected to the upper cam 4 and the lower end eccentrically connected to the lower cam 8; the diameters of the upper cam 4 and the lower cam 8 are the same; the central axes of the upper cam 4, the drive shaft 5 and the lower cam 8 are arranged at equal intervals from left to right;

[0074] An upper annular groove is provided on the upper surface of the upper cam 4, and an upper bearing 11 is arranged vertically and embedded in the upper annular groove. When the driving shaft 5 drives the upper cam 4 to rotate, the upper bearing 11 is always located at the leftmost end of the upper annular groove; the lower end of the upper vertical rod 13 is inserted into the upper bearing 11, and the upper end is fixedly connected to the left end of the upper support rod 1;

[0075] A lower annular groove is provided on the lower surface of the lower cam 8, and a lower bearing 12 is arranged vertically and embedded in the lower annular groove. When the driving shaft 5 drives the lower cam 8 to rotate, the lower bearing 12 is always located at the leftmost end of the lower annular groove; the upper end of the lower vertical rod 14 is inserted into the lower bearing 12, and the lower end is fixedly connected to the left end of the lower support rod 2;

[0076] The upper support rod 1 passes through the upper guide block 3 and is guided by the upper guide block 3 to move in the left-right direction; the lower support rod 2 passes through the lower guide block 9 and is guided by the lower guide block 9 to move in the left-right direction;

[0077] The output shaft of the servo motor 7 is arranged vertically and spaced apart from the drive shaft 5, and the drive chain 6 is simultaneously sleeved on the output shaft of the servo motor 7 and the drive shaft 5;

[0078] The friction coefficient of the push rod wire guide 10 is 0.2, the wire moving distance is 20 mm, and the wrap angle of the wire strip on the push rod wire guide 10 and the horizontal line is 60°;

[0079] The driving device drives the upper support rod 1 and the lower support rod 2 to move in the left and right directions synchronously with equal displacement and in opposite directions. The curve of the displacement of the upper support rod 1 changing with time is a sine curve.

[0080] The linear density of the polyester industrial yarn finally obtained is 4000 dtex, the total number of end hairs and loops is 0, and the service life of the push rod guide is 4 years.

[0081] Example 3

[0082] like Figure 1A processing method for polyester industrial yarn is shown, and the process flow is: melt extrusion → cooling → oiling → heating in the first hot box → heating in the second hot box → heating in the third hot box → heating in the fourth hot box → heating in the fifth hot box 15 → guiding with a double-wire-moving cam guide → network addition in the main network device 16 → winding with a winding roller, wherein the first hot box is provided with a first wire separation roller SR1 and a first hot roller GR1, the second hot box is provided with a second wire separation roller SR2 and a second hot roller GR2, the third hot box is provided with a third wire separation roller SR3 and a third hot roller GR3, the fourth hot box is provided with a fourth wire separation roller SR4 and a fourth hot roller GR4, the fifth hot box 15 is provided with a fifth wire separation roller SR5 and a fifth hot roller GR5, the pressure of the main network device 16 is 2.5 bar, and polyester industrial yarn is obtained.

[0083] like Figure 2-Figure 5 As shown, the double-wire-moving cam wire guide is composed of an upper support rod 1, a lower support rod 2, a driving device, and two push rod wire guides 10;

[0084] The upper support rod 1 and the lower support rod 2 are parallel to the left and right directions, the upper support rod 1 is located above the lower support rod 2 and the two are arranged at a distance;

[0085] Two push rod wire guides 10 are parallel to each other and are connected to the upper support rod 1 and the lower support rod 2 respectively;

[0086] The driving device is composed of a driving shaft 5, a driving chain 6, an upper cam 4, a lower cam 8, an upper bearing 11, an upper vertical rod 13, a lower bearing 12, a lower vertical rod 14, an upper guide block 3, a lower guide block 9 and a servo motor 7;

[0087] The drive shaft 5 is arranged vertically, with the upper end eccentrically connected to the upper cam 4 and the lower end eccentrically connected to the lower cam 8; the diameters of the upper cam 4 and the lower cam 8 are the same; the central axes of the upper cam 4, the drive shaft 5 and the lower cam 8 are arranged at equal intervals from left to right;

[0088] An upper annular groove is provided on the upper surface of the upper cam 4, and an upper bearing 11 is arranged vertically and embedded in the upper annular groove. When the driving shaft 5 drives the upper cam 4 to rotate, the upper bearing 11 is always located at the leftmost end of the upper annular groove; the lower end of the upper vertical rod 13 is inserted into the upper bearing 11, and the upper end is fixedly connected to the left end of the upper support rod 1;

[0089] A lower annular groove is provided on the lower surface of the lower cam 8, and a lower bearing 12 is arranged vertically and embedded in the lower annular groove. When the driving shaft 5 drives the lower cam 8 to rotate, the lower bearing 12 is always located at the leftmost end of the lower annular groove; the upper end of the lower vertical rod 14 is inserted into the lower bearing 12, and the lower end is fixedly connected to the left end of the lower support rod 2;

[0090] The upper support rod 1 passes through the upper guide block 3 and is guided by the upper guide block 3 to move in the left-right direction; the lower support rod 2 passes through the lower guide block 9 and is guided by the lower guide block 9 to move in the left-right direction;

[0091] The output shaft of the servo motor 7 is arranged vertically and spaced apart from the drive shaft 5, and the drive chain 6 is simultaneously sleeved on the output shaft of the servo motor 7 and the drive shaft 5;

[0092] The friction coefficient of the push rod wire guide 10 is 0.7, the wire moving distance is 20 mm, and the wrap angle of the wire strip on the push rod wire guide 10 and the horizontal line is 75°;

[0093] The driving device drives the upper support rod 1 and the lower support rod 2 to move in the left and right directions synchronously with equal displacement and in opposite directions. The curve of the displacement of the upper support rod 1 changing with time is a sine curve.

[0094] The linear density of the polyester industrial yarn finally obtained is 2500 dtex, the total number of end hair yarns and loop yarns is 1, and the service life of the push rod yarn guide is 4 years.

[0095] Example 4

[0096] like Figure 1 A processing method for polyester industrial yarn is shown, and the process flow is: melt extrusion → cooling → oiling → heating in the first hot box → heating in the second hot box → heating in the third hot box → heating in the fourth hot box → heating in the fifth hot box 15 → guiding with a double-wire-moving cam guide → network addition in the main network device 16 → winding with a winding roller, wherein the first hot box is provided with a first wire separation roller SR1 and a first hot roller GR1, the second hot box is provided with a second wire separation roller SR2 and a second hot roller GR2, the third hot box is provided with a third wire separation roller SR3 and a third hot roller GR3, the fourth hot box is provided with a fourth wire separation roller SR4 and a fourth hot roller GR4, the fifth hot box 15 is provided with a fifth wire separation roller SR5 and a fifth hot roller GR5, the pressure of the main network device 16 is 1.5 bar, and the polyester industrial yarn is obtained.

[0097] like Figure 2-Figure 5 As shown, the double-wire-moving cam wire guide is composed of an upper support rod 1, a lower support rod 2, a driving device, and two push rod wire guides 10;

[0098] The upper support rod 1 and the lower support rod 2 are parallel to the left and right directions, the upper support rod 1 is located above the lower support rod 2 and the two are arranged at a distance;

[0099] Two push rod wire guides 10 are parallel to each other and are connected to the upper support rod 1 and the lower support rod 2 respectively;

[0100] The driving device is composed of a driving shaft 5, a driving chain 6, an upper cam 4, a lower cam 8, an upper bearing 11, an upper vertical rod 13, a lower bearing 12, a lower vertical rod 14, an upper guide block 3, a lower guide block 9 and a servo motor 7;

[0101] The drive shaft 5 is arranged vertically, with the upper end eccentrically connected to the upper cam 4 and the lower end eccentrically connected to the lower cam 8; the diameters of the upper cam 4 and the lower cam 8 are the same; the central axes of the upper cam 4, the drive shaft 5 and the lower cam 8 are arranged at equal intervals from left to right;

[0102] An upper annular groove is provided on the upper surface of the upper cam 4, and an upper bearing 11 is arranged vertically and embedded in the upper annular groove. When the driving shaft 5 drives the upper cam 4 to rotate, the upper bearing 11 is always located at the leftmost end of the upper annular groove; the lower end of the upper vertical rod 13 is inserted into the upper bearing 11, and the upper end is fixedly connected to the left end of the upper support rod 1;

[0103] A lower annular groove is provided on the lower surface of the lower cam 8, and a lower bearing 12 is arranged vertically and embedded in the lower annular groove. When the driving shaft 5 drives the lower cam 8 to rotate, the lower bearing 12 is always located at the leftmost end of the lower annular groove; the upper end of the lower vertical rod 14 is inserted into the lower bearing 12, and the lower end is fixedly connected to the left end of the lower support rod 2;

[0104] The upper support rod 1 passes through the upper guide block 3 and is guided by the upper guide block 3 to move in the left-right direction; the lower support rod 2 passes through the lower guide block 9 and is guided by the lower guide block 9 to move in the left-right direction;

[0105] The output shaft of the servo motor 7 is arranged vertically and spaced apart from the drive shaft 5, and the drive chain 6 is simultaneously sleeved on the output shaft of the servo motor 7 and the drive shaft 5;

[0106] The friction coefficient of the push rod wire guide 10 is 0.5, the wire moving distance is 20 mm, and the wrap angle of the wire strip on the push rod wire guide 10 and the horizontal line is 90°;

[0107] The driving device drives the upper support rod 1 and the lower support rod 2 to move in the left and right directions synchronously with equal displacement and in opposite directions. The curve of the displacement of the upper support rod 1 changing with time is a sine curve.

[0108] The linear density of the polyester industrial yarn finally obtained is 1100 dtex, the total number of end hair yarns and loop yarns is 2, and the service life of the push rod yarn guide is 4 years.

Claims

1. A method for processing polyester industrial yarn, characterized in that: A double-wire-moving cam wire guide is installed before the main network device; The double-wire-shifting cam wire guide comprises an upper support rod (1), a lower support rod (2), a driving device, and two push rod wire guides (10); The upper support rod (1) and the lower support rod (2) are both parallel to the left-right direction, the upper support rod (1) is located above the lower support rod (2) and the two are arranged at a distance; The driving device drives the upper support rod (1) and the lower support rod (2) to move in the left and right directions synchronously with equal displacement and in opposite directions, and a curve showing a change in displacement of the upper support rod (1) over time is a sine curve; The two push rod wire guides (10) are parallel to each other and are respectively connected to the upper support rod (1) and the lower support rod (2).

2. The method for processing polyester industrial yarn according to claim 1, characterized in that: The driving device comprises a driving shaft (5), an upper cam (4), a lower cam (8), an upper bearing (11), an upper vertical rod (13), a lower bearing (12), a lower vertical rod (14), an upper guide block (3), and a lower guide block (9); The drive shaft (5) is arranged vertically, with the upper end eccentrically connected to the upper cam (4) and the lower end eccentrically connected to the lower cam (8); the diameters of the upper cam (4) and the lower cam (8) are the same; the central axes of the upper cam (4), the drive shaft (5) and the lower cam (8) are arranged at equal intervals from left to right; An upper annular groove is provided on the upper surface of the upper cam (4), and an upper bearing (11) is arranged vertically and embedded in the upper annular groove. When the drive shaft (5) drives the upper cam (4) to rotate, the upper bearing (11) is always located at the leftmost end of the upper annular groove; the lower end of the upper vertical rod (13) is inserted into the upper bearing (11), and the upper end is fixedly connected to the left end of the upper support rod (1); A lower annular groove is provided on the lower surface of the lower cam (8), and a lower bearing (12) is arranged vertically and embedded in the lower annular groove. When the driving shaft (5) drives the lower cam (8) to rotate, the lower bearing (12) is always located at the leftmost end of the lower annular groove; the upper end of the lower vertical rod (14) is inserted into the lower bearing (12), and the lower end is fixedly connected to the left end of the lower support rod (2); The upper support rod (1) passes through the upper guide block (3) and is guided by the upper guide block (3) to move in the left-right direction; the lower support rod (2) passes through the lower guide block (9) and is guided by the lower guide block (9) to move in the left-right direction.

3. The method for processing polyester industrial yarn according to claim 2, characterized in that: The driving device further comprises a driving chain (6) and a servo motor (7); the output shaft of the servo motor (7) is arranged vertically and spaced apart from the driving shaft (5); and the driving chain (6) is simultaneously sleeved on the output shaft of the servo motor (7) and the driving shaft (5).

4. The method for processing polyester industrial yarn according to claim 1, characterized in that: The friction coefficient of the push rod wire guide (10) is 0.2-0.7, the wire moving distance is 20 mm, and the wrap angle between the wire strip on the push rod wire guide (10) and the horizontal line is 45-90°.

5. The method for processing polyester industrial yarn according to claim 1, characterized in that: The overall process flow is: melt extrusion → cooling → oiling → first hot box heating → second hot box heating → third hot box heating → fourth hot box heating → fifth hot box heating → double wire shifting cam wire guide for wire guiding → main network device adding network → winding roller winding, wherein the first hot box is provided with a first wire separation roller SR1 and a first hot roller GR1, the second hot box is provided with a second wire separation roller SR2 and a second hot roller GR2, the third hot box is provided with a third wire separation roller SR3 and a third hot roller GR3, the fourth hot box is provided with a fourth wire separation roller SR4 and a fourth hot roller GR4, and the fifth hot box is provided with a fifth wire separation roller SR5 and a fifth hot roller GR5.

6. The method for processing polyester industrial yarn according to claim 5, characterized in that: The pressure of the main network device is 1.5-4.0bar.

7. A method for processing polyester industrial yarn according to claim 6, characterized in that: The linear density of the polyester industrial yarn is 1100-5000 dtex, the total number of end hair yarns and loop yarns is not more than 2, and the service life of the push rod yarn guide (10) is 4 years.

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