A processing method for polyester industrial yarn

Abstract

The present invention belongs to the technical field of polyester production, and relates to a processing method for polyester industrial yarns. A double-wire-transfer cam wire guide is installed in front of the main networker. The double-wire-transfer cam wire guide includes an upper support rod, a lower support rod, a driving device, and two push-rod wire guides. The upper support rod and the lower support rod are both parallel to the left-right direction. The upper support rod is located above the lower support rod and they are arranged at an interval. The driving device drives the upper support rod and the lower support rod to move in the left-right direction synchronously with equal displacement and in opposite directions. The displacement curve of the upper support rod with respect to time is a sine curve. 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. The processing method for polyester industrial yarns of the present invention reduces the tension of the yarn before the main networker, decreases the air pressure and air consumption of the main networker, and improves the problems of hairiness and looping of the polyester industrial yarns.

Description

Technical Field

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

[0002] Polyester industrial yarns refer to high-strength and thick-denier polyester industrial filament yarns, which have the advantages of high strength, high modulus, small elongation, good heat resistance, impact resistance, and good fatigue resistance. They are good materials for the rubber skeletons of many industrial textiles and are widely used in industrial fabrics, cord fabrics, advertising light box fabrics, building formwork structure materials, airbags, conveyor belts, and other reinforcing materials.

[0003] Currently, in order to increase the bundling property of the filaments, the compactness of the filament yarns, and the downstream weaving efficiency, network addition is performed after the setting rollers for polyester industrial yarns. The pre-tension of the network nozzles for polyester industrial yarns is 210 cN, and the air pressure of the main networker needs to reach 2.0 - 5.0 bar, resulting in a large amount of gas consumption. Moreover, when the air pressure is too high, problems such as hairiness and looping of the filaments are likely to occur.

[0004] To solve the above problems, patent application CN106467986A discloses a production process for modified polyamide fibers. During the processing of industrial yarns, the filaments are stretched three times after oiling, and the godet wheels are matched with the drawing rollers. The filaments loop around the drawing rollers and godet wheels. The function of the godet wheels is to prevent the filaments from slipping and changing direction during drafting. However, this technical solution still has problems such as high air pressure and filament hairiness.

[0005] Patent application CN103849972A discloses a novel main networker that improves the network points without increasing energy consumption. The filament guide on the nozzle is used to position the filaments so that the filaments can pass through the nozzle stably. However, the contact time between the filaments and the filament guide is long, resulting in serious grooves on the surface of the filament guide. When the filaments pass through the filament guide with grooves, it will cause damage and breakage of the single filaments, leading to problems such as hairiness and looping of the filaments.

[0006] Patent application CN107142535A discloses a method for threading a spinning and winding device and a spinning and winding device. The filament guide before the pre-networker is used to change the direction of the filaments and does not affect the air pressure of the main networker. There are still problems such as large gas consumption and filament hairiness.

[0007] Therefore, in view of the problems of high air pressure, large gas consumption, filament hairiness, and looping existing in the prior art, it is necessary to develop a new processing method for polyester industrial yarns. Summary of the Invention

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

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

[0010] A processing method of polyester industrial yarn, in which a double-wire-transfer cam wire guide is installed in front of the main networker;

[0011] The double-wire-transfer 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 horizontally arranged and parallel to each other. Denote the length direction of the two as the left-right direction. The upper support rod is located above the lower support rod and they are arranged at intervals;

[0013] The driving device is connected to the left ends of both the upper support rod and the lower support rod at the same time. The driving device drives the upper support rod and the lower support rod to move in the left-right direction synchronously and with equal displacement in the opposite direction. The displacement curve of the upper support rod with respect to time is a sine curve;

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

[0015] In the present invention, a double-wire-transfer cam wire guide is installed in front of the main networker of polyester industrial yarn. By using the friction of the double-wire-transfer cam wire guide, the tension during yarn network addition is reduced, thereby changing the tension of the yarn in motion, making the tension in the network addition area small, facilitating effective network addition, reducing the network air pressure, and improving the situation of hairiness and loop of polyester industrial yarn.

[0016] Polyester industrial yarn has the characteristics of large fineness and high strength. When using other wire guides, after a long contact time, serious grooves will be generated on the surface of the wire guide. When the filament passes through the wire guide, single-filament damage and breakage will occur, causing problems such as hairiness and loops in the appearance of the product. To solve this problem, the present invention designs a double-wire-transfer cam wire guide. The two push-rod wire guides move in the left-right direction synchronously and with equal displacement in the opposite direction, extending and retracting to form an alternating state. In this way, under the condition that the overall filament wrap angle remains roughly unchanged, the wear of the filament can reach a very small state, thereby avoiding abnormal hairiness of single filaments caused by the wear of the wire guide under large tension. And after the filament passes through the wire guide, the tension before the main network is reduced, which is beneficial to reducing the main network air pressure and improving the loop and hairiness of industrial yarn.

[0017] As a preferred technical solution:

[0018] For the processing method of polyester industrial yarn as described above, the driving device includes 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 vertically arranged, with its upper end eccentrically connected to the upper cam and its lower end eccentrically connected to the lower cam; the upper cam and the lower cam have the same diameter; 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. The upper bearing is vertically arranged and embedded in the upper annular groove. When the drive 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. The lower bearing is vertically arranged and embedded in the lower annular groove. When the drive 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-right direction; the lower support rod passes through the lower guide block and is guided by the lower guide block to move in the left-right direction.

[0023] For a processing method of polyester industrial yarn as described above, the drive device further includes a drive chain and a servo motor. The output shaft of the servo motor is vertically arranged and arranged at an interval from the drive shaft. The drive chain is sleeved on the output shaft of the servo motor and the drive shaft at the same time.

[0024] For a processing method of polyester industrial yarn as described above, the friction coefficient of the pusher wire guide is 0.2 - 0.7, the wire transfer distance is 20 mm, and the wrap angle of the wire strip on the pusher wire guide with the horizontal line is 45 - 90°.

[0025] For a processing method of polyester industrial yarn as described above, the overall 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 → guiding the wire by a double-wire-transfer cam wire guide → adding network by a main networker → winding by a winding roller. Among them, a first wire dividing roller SR1 and a first hot roller GR1 are provided in the first hot box, a second wire dividing roller SR2 and a second hot roller GR2 are provided in the second hot box, a third wire dividing roller SR3 and a third hot roller GR3 are provided in the third hot box, a fourth wire dividing roller SR4 and a fourth hot roller GR4 are provided in the fourth hot box, and a fifth wire dividing roller SR5 and a fifth hot roller GR5 are provided in the fifth hot box.

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

[0027] A processing method for polyester industrial yarn as described above, the linear density of the polyester industrial yarn is 1100 - 5000 dtex, the total number of end face flyings and loops is not more than 2, and the service life of the push rod wire guide is 4 years.

[0028] Beneficial effects:

[0029] (1) The processing method of the polyester industrial yarn of the present invention reduces the tension of the yarn before the main networker through the friction force between the yarn and the double wire shifting cam wire guide, and further reduces the air pressure and air consumption of the main networker, improving the problems of flyings and loops of the polyester industrial yarn.

[0030] (2) The processing method steps of the polyester industrial yarn of the present invention are simple and concise, and it is not only applicable to the position before the main networker of the polyester industrial yarn, but also applicable to other processing positions of the polyester industrial yarn, and is also applicable to the processing of polyester civil yarn, nylon, etc. Description of the drawings

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

[0032] Figure 2 is the structural schematic diagram of the double wire shifting cam wire guide of the present invention;

[0033] Figure 3 is the position schematic diagram of the upper cam and the lower cam of the double wire shifting cam wire guide of the present invention during rotation;

[0034] Figure 4 is the structural schematic diagram of the drive shaft of the double wire shifting cam wire guide of the present invention;

[0035] Figure 5 is the wire guiding schematic diagram of the double wire shifting cam wire guide of the present invention;

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

[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 not 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 also fall within the scope defined by the appended claims of this application.

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

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

[0040] It is measured with reference to the standard of GB / T 14343 - 2008 "Test Method for Linear Density of Chemical Fiber Filament Yarn". Among them, the test temperature is 25°C and the relative humidity of the test is 65%.

[0041] (2) Detection method for total number of end surface hairiness and loop yarns of polyester industrial yarn:

[0042] The inspector uses a flashlight to inspect the end surface of the cheese (width is 120 mm) of polyester industrial yarn (weight is 10 kg). The loop yarn with a length less than 5 mm is ignored, and the calculation starts when the loop yarn length ≥ 5 mm. The total number of end surface hairiness and loop yarns is counted.

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

[0044] Timing starts from the start of the operation of the push - rod wire guide and ends when grooves appear on the surface layer of the push - rod wire guide and the total number of end surface hairiness and loop yarns of the polyester industrial yarn is greater than 2. The obtained duration is used as the service life, with the unit of year.

[0045] Example 1

[0046] As Figure 1 shown, a processing method of polyester industrial yarn has a technological process: melting and 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 → wire guiding with a double - shift - wire cam wire guide → adding network with the main networker 16 → winding with a winding roller. Among them, the first hot box is provided with a first filament splitting roller SR1 and a first hot roller GR1, the second hot box is provided with a second filament splitting roller SR2 and a second hot roller GR2, the third hot box is provided with a third filament splitting roller SR3 and a third hot roller GR3, the fourth hot box is provided with a fourth filament splitting roller SR4 and a fourth hot roller GR4, the fifth hot box 15 is provided with a fifth filament splitting roller SR5 and a fifth hot roller GR5, and the pressure of the main networker 16 is 4.0 bar, thus obtaining the polyester industrial yarn.

[0047] As Figures 2 - 5 shown, the double - shift - wire cam wire guide consists of an upper support rod 1, a lower support rod 2, a driving device, and 2 push - rod wire guides 10;

[0048] The upper support rod 1 and the lower support rod 2 are horizontally arranged and parallel to each other. Denote the length direction of the two as the left - right direction. The upper support rod 1 is located above the lower support rod 2 and they are arranged at intervals;

[0049] The 2 push - rod wire guides 10 are parallel to each other and are respectively connected to the right ends of the upper support rod 1 and the lower support rod 2;

[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 driving shaft 5 is vertically arranged, with its upper end eccentrically connected to the upper cam 4 and its lower end eccentrically connected to the lower cam 8; the upper cam 4 and the lower cam 8 have the same diameter; the central axes of the upper cam 4, the driving shaft 5 and the lower cam 8 are arranged at equal intervals from left to right;

[0052] The upper surface of the upper cam 4 is provided with an upper annular groove, the upper bearing 11 is vertically arranged and embedded in the upper annular groove, and 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] The lower surface of the lower cam 8 is provided with a lower annular groove, the lower bearing 12 is vertically arranged and embedded in the lower annular groove, and 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 vertically arranged and arranged at an interval from the driving shaft 5, and the driving chain 6 is sleeved on the output shaft of the servo motor 7 and the driving shaft 5 at the same time;

[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 with 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-right direction synchronously and with equal displacement and in the opposite direction, and the displacement curve of the upper support rod 1 with respect to time is a sine curve.

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

[0059] Comparative Example 1

[0060] A processing method of polyester industrial yarn is basically the same as that of Example 1, except that: the part of the double wire moving cam wire guide except for the 2 push rod wire guides is integrally replaced by a fixed frame, and the 2 push rod wire guides are fixed on the fixed frame.

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

[0062] Comparing Comparative Example 1 with Example 1, the total number of end face flyings and loop yarns in Example 1 is significantly reduced, and the service life of the pusher wire guide is also significantly extended. This shows that the movement of the upper support rod and the lower support rod in the left-right direction is more conducive to reducing the total number of end face flyings and loop yarns and improving the service life of the pusher wire guide than the non-movement of the upper support rod and the lower support rod in the left-right direction.

[0063] Comparative Example 2

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

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

[0066] Comparing Comparative Example 2 with Example 1, the total number of end face flyings and loop yarns in Example 1 is significantly reduced, and the service life of the pusher wire guide is also significantly extended. This shows that the opposite movement direction of the upper support rod and the lower support rod in the left-right direction is more conducive to reducing the total number of end face flyings and loop yarns and improving the service life of the pusher wire guide than the same movement direction of the upper support rod and the lower support rod in the left-right direction.

[0067] Example 2

[0068] As Figure 1 shown, a processing method of polyester industrial yarn, the 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 15 heating → wire guiding by a double-wire-moving cam wire guide → adding network by a main networker 16 → winding by a winding roller, wherein, a first wire dividing roller SR1 and a first hot roller GR1 are arranged in the first hot box, a second wire dividing roller SR2 and a second hot roller GR2 are arranged in the second hot box, a third wire dividing roller SR3 and a third hot roller GR3 are arranged in the third hot box, a fourth wire dividing roller SR4 and a fourth hot roller GR4 are arranged in the fourth hot box, a fifth wire dividing roller SR5 and a fifth hot roller GR5 are arranged in the fifth hot box 15, and the pressure of the main networker 16 is 3.5 bar, thus obtaining the polyester industrial yarn.

[0069] As Figures 2 - 5 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 2 pusher wire guides 10;

[0070] The upper support rod 1 and the lower support rod 2 are horizontally arranged and parallel to each other. Denote the length direction of the two as the left - right direction. The upper support rod 1 is located above the lower support rod 2 and they are arranged at intervals.

[0071] Two pusher wire guides 10 are parallel to each other and are respectively connected to the right ends of the upper support rod 1 and the lower support rod 2.

[0072] The driving device consists 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 driving shaft 5 is vertically arranged, with its upper end eccentrically connected to the upper cam 4 and its lower end eccentrically connected to the lower cam 8. The upper cam 4 and the lower cam 8 have the same diameter. The central axes of the upper cam 4, the driving shaft 5 and the lower cam 8 are arranged at equal intervals from left to right.

[0074] The upper surface of the upper cam 4 is provided with an upper annular groove. The upper bearing 11 is vertically arranged 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 left - most 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] The lower surface of the lower cam 8 is provided with a lower annular groove. The lower bearing 12 is vertically arranged 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 left - most 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 vertically arranged and is arranged at an interval from the driving shaft 5. The driving chain 6 is simultaneously sleeved on the output shaft of the servo - motor 7 and the driving shaft 5.

[0078] The friction coefficient of the pusher wire guide 10 is 0.2, the wire - moving distance is 20 mm, and the wrap angle of the wire on the pusher wire guide 10 with 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 - right direction synchronously and with equal displacement amounts and in opposite directions. The displacement - amount curve of the upper support rod 1 with respect to time is a sine curve.

[0080] The linear density of the finally produced polyester industrial yarn is 4000 dtex, the total number of end - face fly - ends and loop - ends is 0, and the service life of the pusher wire guide is 4 years.

[0081] Example 3

[0082] As Figure 1 shown, a processing method of polyester industrial yarn has a process flow as follows: 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 the yarn using a double-shifting cam yarn guide → adding network by the main networker 16 → winding by the winding roller. Among them, a first yarn splitting roller SR1 and a first hot roller GR1 are provided in the first hot box, a second yarn splitting roller SR2 and a second hot roller GR2 are provided in the second hot box, a third yarn splitting roller SR3 and a third hot roller GR3 are provided in the third hot box, a fourth yarn splitting roller SR4 and a fourth hot roller GR4 are provided in the fourth hot box, a fifth yarn splitting roller SR5 and a fifth hot roller GR5 are provided in the fifth hot box 15, and the pressure of the main networker 16 is 2.5 bar, thus obtaining the polyester industrial yarn.

[0083] As Figures 2 - 5 shown, the double-shifting cam yarn guide consists of an upper support rod 1, a lower support rod 2, a driving device, and 2 push rod yarn guides 10;

[0084] The upper support rod 1 and the lower support rod 2 are horizontally arranged and parallel to each other. Denote the length direction of the two as the left-right direction. The upper support rod 1 is located above the lower support rod 2 and they are arranged at intervals;

[0085] The 2 push rod yarn guides 10 are parallel to each other and are respectively connected to the right ends of the upper support rod 1 and the lower support rod 2;

[0086] The driving device consists 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 driving shaft 5 is vertically arranged, with the upper end eccentrically connected to the upper cam 4 and the lower end eccentrically connected to the lower cam 8; the upper cam 4 and the lower cam 8 have the same diameter; the central axes of the upper cam 4, the driving shaft 5, and the lower cam 8 are arranged at equal intervals from left to right;

[0088] The upper surface of the upper cam 4 is provided with an upper annular groove. The upper bearing 11 is vertically arranged 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] The lower surface of the lower cam 8 is provided with a lower annular groove. The lower bearing 12 is vertically arranged 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 vertically arranged and spaced from the drive shaft 5, and the drive chain 6 is sleeved on the output shaft of the servo motor 7 and the drive shaft 5 at the same time;

[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 on the push rod wire guide 10 with 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-right direction synchronously and with equal displacement in the opposite direction, and the displacement curve of the upper support rod 1 with respect to time is a sine curve.

[0094] The linear density of the finally produced polyester industrial yarn is 2500 dtex, the total number of end face flyings and loops is 1, and the service life of the push rod wire guide is 4 years.

[0095] Example 4

[0096] As Figure 1 shown, a processing method of polyester industrial yarn, 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 → wire guiding by using a double wire moving cam wire guide → adding network by the main networker 16 → winding by the winding roller, wherein, the first hot box is provided with a first wire splitting roller SR1 and a first hot roller GR1, the second hot box is provided with a second wire splitting roller SR2 and a second hot roller GR2, the third hot box is provided with a third wire splitting roller SR3 and a third hot roller GR3, the fourth hot box is provided with a fourth wire splitting roller SR4 and a fourth hot roller GR4, the fifth hot box 15 is provided with a fifth wire splitting roller SR5 and a fifth hot roller GR5, the pressure of the main networker 16 is 1.5 bar, and then the polyester industrial yarn is obtained.

[0097] As Figures 2 - 5 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 2 push rod wire guides 10;

[0098] The upper support rod 1 and the lower support rod 2 are horizontally arranged and parallel to each other. The length direction of the two is defined as the left-right direction. The upper support rod 1 is located above the lower support rod 2 and the two are spaced apart;

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

[0100] The driving device consists 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 driving shaft 5 is vertically arranged, with its upper end eccentrically connected to the upper cam 4 and its lower end eccentrically connected to the lower cam 8; the upper cam 4 and the lower cam 8 have the same diameter; the central axes of the upper cam 4, the driving shaft 5 and the lower cam 8 are arranged at equal intervals from left to right;

[0102] The upper surface of the upper cam 4 is provided with an upper annular groove, the upper bearing 11 is vertically arranged and embedded in the upper annular groove, and 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] The lower surface of the lower cam 8 is provided with a lower annular groove, the lower bearing 12 is vertically arranged and embedded in the lower annular groove, and 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 vertically arranged and arranged at an interval from the driving shaft 5, and the driving chain 6 is sleeved on the output shaft of the servo motor 7 and the driving shaft 5 at the same time;

[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 on the push rod wire guide 10 with 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-right direction synchronously and with equal displacement and in the opposite direction, and the displacement curve of the upper support rod 1 with respect to time is a sine curve.

[0108] The linear density of the finally produced polyester industrial yarn is 1100 dtex, the total number of end face flyings and loops is 2, and the service life of the push rod wire 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 arranged horizontally and parallel to each other, and the length direction of the two is recorded as 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 is connected to the left ends of the upper support rod (1) and the lower support rod (2) at the same time, and the driving device drives the upper support rod (1) and the lower support rod (2) 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 (1) changing with time is a sine curve; The two push rod wire guides (10) are parallel to each other and are respectively connected to the right ends of 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, the upper end of which is eccentrically connected to the upper cam (4), and the lower end of which is 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 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); 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 and right directions; 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 and right directions.

3. The method for processing polyester industrial yarn according to claim 2, characterized in that: The driving device also includes 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). 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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