WO2015081645A1 - Synchronous setting circular knitting machine and method for producing knitted fabric containing thermoplastic fibers by using same - Google Patents

Abstract

A synchronous setting circular knitting machine and a method for producing knitted fabric containing thermoplastic fibers by using same. The synchronous setting circular knitting machine comprises: a rack, a creel support, a needle cylinder, a dragging and coiling device, a control cabinet and a synchronous setting device. The synchronous setting device comprises a heat setting roller which is arranged on the creel support and additionally provided with a lifting device, the heat setting roller is connected to a heat setting roller control cabinet, the heat setting roller is located above a dragging and fabric coiling roller in the dragging and coiling device and driven by the lifting device to ascend and descend, the axis of the heat setting roller coincides with the axis of the needle cylinder, and the outer diameter of the heat setting roller is smaller than the inner diameter of the needle cylinder. The circular knitting machine can perform fabric knitting and heat setting at the same time, and the synchronous setting device has a reasonable design and can evenly and continuously heat the knitted fabric, providing high-efficiency heat setting. Pre-setting of the dyeing and finishing procedures in the production process is omitted, so that the technological process is simplified, the production cost of the fabric can be reduced significantly, consumption is reduced, and the sales-output ratio of ready-to-wear clothes and the utilization rate of the fabric are improved.

Description

 Synchronous shaping circular knitting machine and method for producing the same comprising thermoplastic fiber knitted fabric

 The invention belongs to the technical field of production technology of knitting machinery and knitted fabric, in particular to a synchronous shaping circular knitting machine and a method for producing the same comprising thermoplastic fiber knitted fabric.

Background technique

 In the process of parking, warehousing, transportation, etc. of the thermoplastic fiber, the knitted fabric containing the thermoplastic fiber needs to be irregular and wrinkled due to various stress extrusion, so most knitted fabrics containing thermoplastic fibers need to be dyed before dyeing. Predetermined processing for good dimensional stability and flatness. At present, there are two conventional processes for knitting fabrics containing thermoplastic fibers: 1. Weaving → framing → flat-predetermined type → splicing → dyeing → framing → flat-width setting, and finally obtaining a flat-knit finished fabric; Weaving → cylinder high temperature predetermined type → dyeing → dehydration → wet expansion → drying → cylinder pre-shrinking and rolling, and finally the finished cylinder knitted fabric. The current process has the following defects: Since the predetermined process is completed on the tenter setting machine or the cylinder high-temperature setting machine in the dyeing and finishing workshop, the equipment investment is large, the process flow is long, the energy consumption is high, and the production cost is high. Since the fiber is retracted and uncompressed before the blank is placed, the fabric is likely to form dead pleats, and the predetermined process sometimes cannot be completely repaired, resulting in fabric repair or lowering.

 Chinese utility model patent (application No. 201120239336. 5) discloses an integrated device for heat-setting of an open-web roll, comprising a shaping and collecting mechanism, a driving arm, an active heating roller and a gear transmission, and the shaping and collecting mechanism is distributed The rack and the collecting roller are composed of a cloth supporting ring at the bottom of the spreading frame, and a cutting cloth blade is respectively arranged at two outer ends of the supporting cloth ring; an active heating roller is disposed at an intermediate position of the shaping and receiving mechanism, and the active heating roller side is provided A passive heating roller is disposed, and the active heating roller and the passive heating roller are respectively provided with rubber rollers on both sides. By setting the cloth-distributing frame, the cloth-cutting knife, the heating roller and the double-rolling cloth to form the integrated cloth-receiving device, the cloth can be cut and heated at the same time. The fixing method of the patent is that the fabric roll is equipped with a heat-conducting roller for conducting heat-setting of the sectioned fabric, and the production process and setting process of the knitted fabric containing the thermoplastic fiber are not involved.

Chinese invention patent application (Application No. 201 310302518. 6) discloses a synchronizing cylinder sizing device mounted on a circular knitting machine, which is equipped with high frequency induction heating between the knitting circular knitting device and the grey fabric pulling and winding device. Device. The circular knit fabric slides over the surface of the high-frequency induction heating cylinder, and the fabric is finished in the process of not being unloaded after the weaving. The heating roller of the invention patent application is always fixed on the central vertical rod of the circular knitting machine, and the separation of the knitted fabric and the outer surface of the roller is realized by the pneumatic cloth support during the heating process and the shutdown. Due to the limited expansion of knitted fabrics, The limitation of the internal space of the preparation cylinder, the roller continues to heat the fabric when the knitting equipment is stopped, resulting in partial over-forming of the knitted fabric (the knitting equipment is frequently stopped due to yarn breakage or other reasons, which seriously affects the quality of the fabric). The synchronous sizing device disclosed in the invention patent application has no heat insulating device, and the heat loss on the one hand reduces the heat energy utilization rate and increases the energy consumption, on the other hand, the shaping drum bakes the knitting equipment syringe, deteriorates the lubrication condition of the knitting equipment and the syringe size precision, It has a great influence on the service life of the knitting machine and the quality of the fabric. In addition, the invention patent application does not specifically disclose the production process flow and the shaping process of the knitted fabric containing thermoplastic fibers.

 How to design a knitting fabric production process and equipment containing thermoplastic fibers, the circular knitting machine can realize the simultaneous woven fabric and heat setting, uniform heating and high heat setting efficiency. The open width, predetermined type, and seaming process of the flat knitting fabric in the dyeing and finishing process are omitted; the cylinder high temperature predetermined type process of the cylinder knitting fabric dyeing and finishing process is omitted. It can greatly reduce the production cost of fabrics, reduce consumption, and increase the production and sales rate and fabric utilization rate of garments. This is an urgent problem to be solved in the current technical field. Summary of the invention

 The invention solves the above problems existing in the prior art, and provides a synchronous sizing circular knitting machine and a method for producing the same comprising a thermoplastic fiber knitted fabric. The circular knitting machine can realize the simultaneous woven fabric and heating and setting, and the synchronous sizing device is designed reasonably. The hooking of the knitted fabric can be continuously heated; the predetermined type of dyeing and finishing process is omitted in the production process, the process flow is simplified, the fabric production cost can be greatly reduced, the consumption is reduced, and the production and sales rate of the garment and the utilization rate of the fabric are improved.

 The object of the invention is achieved by the following technical solutions:

 A synchronous styling circular knitting machine, comprising a frame, a creel bracket, a syringe, a pulling and winding device, a control box and a synchronous sizing device, wherein the synchronous sizing device comprises adding on the creel bracket a heat setting roller with a lifting device, the heat setting roller being connected to a heat setting roller control box, the heat setting roller being located above the pulling roller in the pulling and winding device, and The lifting device drives the lifting and lowering, the axis of the heat setting roller coincides with the axis of the syringe, and the outer diameter of the heat setting roller is smaller than the inner diameter of the syringe.

 The improvement of the above technical solution: the lifting device comprises a cylinder mounting plate, a cylinder, a gas pipe, a throttle valve and a solenoid valve, the cylinder mounting plate is horizontally mounted on the top of the creel bracket, and the upper end of the cylinder is fixed on the cylinder mounting plate The heat setting roller is mounted on a cylinder piston rod, and the cylinder is connected to an external compressed air joint through a gas pipe, a throttle valve, and a solenoid valve, and the electromagnetic valve is connected to the control box.

Further improvement of the above technical solution: a mechanical heat-insulating cylinder is installed on the cylinder, and the axis of the heat-insulating cylinder is coincident with the axis of the cylinder, and the outer diameter of the heat-insulating cylinder is smaller than the inner diameter of the cylinder. The inner diameter of the heat-insulating cylinder is larger than the outer diameter of the heat-setting cylinder, the heat-setting roller is lowered to the inner position of the cylindrical knitted fabric in the cylinder, and the heat-setting roller and the heat-insulating cylinder are formed through the circle. The gap of the tubular knitted fabric, the heat setting roller is raised to a position above the cylinder, and the heat setting roller is detached from the cylindrical knitted fabric.

 Further improvement of the above technical solution: three cylinder piston rod holes are arranged around the cylinder mounting plate, three cylinders of the cylinder, three cylinder piston rods of three cylinders are vertically inserted into the corresponding cylinder piston rod holes The heat setting roller is installed at the lower end of the three cylinder piston rods.

 Further improvement of the above technical solution: the heat setting roller is provided with a temperature sensor, the temperature sensor is connected with the heat setting roller control box; the heat setting roller is configured with a temperature setting and display device, a heating control element, The temperature setting and display device and the heating control element are mounted on a heat setting roller control box.

 Further improvement of the above technical solution: The heating mode of the heat setting roller is electromagnetic induction force port heat, resistance wire force port heat or heat transfer oil port mouth heat.

 A method for producing a knitted fabric comprising thermoplastic fibers by using the above-mentioned synchronous sizing circular knitting machine, characterized in that it comprises the following A process or B process:

 Process A: 釆 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述

 Process B: 釆 织 同步 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述

 The improvement of the above technical solution: the woven fabric synchronous predetermined type process comprises the following steps: the circular knitting machine is started, and the cylindrical knitted fabric is moved to the pulling and winding device after forming the fabric in the cylinder mouth of the circular knitting machine, and is simultaneously raised. The heat setting roller up to the set temperature drops into the inside of the knitted cylindrical fabric, and the cylindrical knitted fabric passes through the gap between the heat insulating cylinder and the heat setting roller, and the outer side of the heat setting roller and the knitting circle The tube fabric is in close contact with each other to achieve heat setting of the knitted cylinder fabric. The knitted fabric continues to move downwards out of contact with the heat setting roller, and naturally enters the pulling and winding device after cooling, completing the entire weaving setting process; The lifting device lifts the heat setting roller, and the heat setting roller rises above the cylinder to make contact with the knitted cylindrical fabric.

 Further improvement of the above technical solution: The woven fabric synchronous predetermined type of process conditions are as follows: heat setting roll height h, heat setting roll outer diameter d, lower cloth speed, setting time t, setting temperature T, knitted cylinder fabric Blank width L, setting efficiency p, cylinder diameter D, temperature fluctuation △ t

 Heat setting roll outer diameter: 0. 7 d/D 0. 9

Stereotype time: t=h/v > 1 0 seconds Styling temperature: 250 °C > T > 1 50 °C

 Temperature fluctuation: A t 2 °C

 Styling efficiency: p = 2L / π d > 85%.

 The advantages and positive effects of the present invention are:

 The invention utilizes a heat-setting roller to realize uniform and continuous heating of the fabric, and realizes synchronous heat setting of the woven fabric. The synchronous sizing device with lifting device and the existing structure of the circular knitting machine are ingeniously combined to realize the styling and shaping integration, the lifting device can automatically control the heat setting roller lifting, and the cylindrical knitting fabric is in the cylinder mouth of the circular knitting machine. After forming the fabric, the pulling and winding device is moved, and the heat setting roller raised to the set molding temperature is controlled to descend into the interior of the knitted cylindrical fabric by the lifting device, and the outer side of the roller is in close contact with the knitted cylindrical fabric, thereby achieving Heat setting of knitted cylinder fabrics. The knitted fabric continues to move downwards out of contact with the heat setting roller, and naturally cools down and then enters the pulling and winding device to complete the entire weaving and setting process. The circular knitting machine is stopped, the lifting device lifts the heat-setting roller, and the heat-setting roller rises above the cylinder to disengage from the knitted cylindrical surface, thereby avoiding partial over-forming of the knitted fabric.

 In order to avoid the temperature of the circular knitting machine cylinder being affected by the heat setting cylinder, the heat-insulating and collecting cylinder is installed inside the cylinder. The heat-insulating and receiving cylinder is made of high-temperature resistant heat-insulating material, and the knitting equipment is knitted when the knitting equipment is running. Adhere to the outer surface of the heat-setting roller and slide through the gap between the heat-setting roller and the heat-insulating cylinder. On the one hand, the heat-insulating cylinder can prevent the heat-setting roller from baking the syringe, and on the other hand, it plays a limiting role on the knitted fabric, and ensures that the knitted cylinder fabric is closely attached to the outer side of the heat-setting roller to improve the heat setting efficiency.

 The heat setting roller is provided with a temperature sensor, and the temperature sensor is connected with the heat setting roller control box, so that precise control of the temperature of the outer side surface of the heat setting roller can be realized.

 The temperature setting and display device and the heating control element are mounted on the heat setting roller control box, and the heat setting roller lifting device is connected to the control box through the electromagnetic valve to realize synchronous control of the lifting device and the knitting circular machine.

The invention makes the production process of the traditional two kinds of knitted fabrics containing thermoplastic fibers into: 1. 进行 Synchronously predetermined type of weaving with a synchronous styling circular knitting machine → dyeing → dehydration → splitting → flattening and final setting, finally obtained The flat-knit finished fabric eliminates the opening, pre-typing and seaming processes of the existing technology, and improves the utilization rate of the fabric; 2. Synchronizes the predetermined type of weaving with a synchronous-type knitting circular machine → dyeing → dehydration → wet Expanding→drying→Cylinder pre-shrinking and rolling, finally obtaining the cylindrical knitted finished fabric, eliminating the need for the cylinder high-temperature pre-defined process of the existing dyeing and finishing process, the cylindrical knitted fabric can also improve the production efficiency of the garment, round The comfort of the sideless seam garment produced by the tubular knitted fabric is also better than that of the side seam garment produced by the flat knitted fabric. Moreover, the investment in dyeing and finishing equipment is reduced, the process flow is shortened, and energy consumption and production costs are reduced. DRAWINGS

 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a synchronous sizing circular knitting machine of the present invention (a state in which a heat setting roller is raised above a knitting circular machine cylinder).

 Among them, 1, cylinder piston rod, 2, creel bracket, 3, cylinder mounting plate, 4, air pipe, 5, throttle valve, 6, solenoid valve, 7, syringe, 8, control box, 9, cylindrical Knitted fabric, 10, pulling the roll, 11, heat setting roll control box, 12, receiving heat insulation tube, 13, heat setting roll, 14, cylinder, 15 compressed air joint.

detailed description

 The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

 Referring to Figure 1, an embodiment of a synchronous sizing circular knitting machine of the present invention comprises a frame, a creel bracket 2, a syringe 7, a take-up take-up device, a control box 8 and a synchronous sizing device. The synchronous sizing device comprises a heat setting roller 13 with a lifting device attached to the creel bracket 2, the heat setting roller 13 is connected to a heat setting roller control box 11, and the heat setting roller 13 is located at the pulling Above the pulling roll 10 in the take-up device, and driven up and down by the lifting device, the axis of the heat setting roll 13 coincides with the axis of the barrel 1, and the outer diameter of the heat setting roll 13 is smaller than that of the barrel 1. the inside diameter of.

 Specifically, the lifting device includes a cylinder mounting plate 3, a cylinder 14, a gas pipe 4, a throttle valve 5, and a solenoid valve 6. The cylinder mounting plate 3 is horizontally mounted on the top of the creel bracket 1, and the upper end of the cylinder 14 is fixed to the cylinder mounting plate 3. The heat setting roller 13 is mounted on the cylinder piston rod 1, and the cylinder 14 is connected to the external compressed air joint 15 through the gas pipe 4, the throttle valve 5, and the solenoid valve 6, and the solenoid valve 6 is connected to the control box 8.

 A receiving heat insulating tube 12 is mounted on the syringe 2, and the axis of the receiving heat insulating tube 12 coincides with the axis of the syringe 1. The outer diameter of the insulating tube 12 is smaller than the inner diameter of the barrel 1, and the insulating tube is closed. The inner diameter of 12 is larger than the outer diameter of the heat setting roller 13. The heat setting roll 13 is lowered to the inner position of the cylindrical knitted fabric 9 in the barrel 1, and a gap is formed between the heat setting roll 13 and the cloth insulating tube 12 through the cylindrical knitted fabric 9, heat setting roll The barrel 13 is raised above the barrel 2, and the heat setting roll 13 is separated from the cylindrical knitted fabric 9.

 Three cylinder piston rod holes are arranged around the cylinder mounting plate 3, three cylinders 14 are arranged, and three cylinder piston rods 1 of three cylinders 14 are vertically inserted into the corresponding cylinder piston rod holes, respectively. The roller 13 is mounted at the lower end of the three cylinder piston rods 1.

 A temperature sensor is mounted in the heat setting roll 13, and the temperature sensor is connected to the heat setting roll control box 11. The heat setting roll 13 is also provided with a temperature setting and display means, a heating control element, and the temperature setting and display means and the heating control element are mounted on the heat setting roll control box 11.

The heating mode of the heat setting roller 13 is electromagnetic induction heating, resistance wire heating or heat conduction. Oily mouth heat, preferably electromagnetic induction force port heat mode.

 The present invention relates to a specific embodiment of a method for producing a knitted fabric containing thermoplastic fibers by using the above-mentioned synchronous sizing circular knitting machine, which comprises the following A process or B process:

 Process A: 釆 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述

 Process B: 釆 织 同步 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述

 Specifically, the woven fabric synchronization predetermined type process includes the following steps: The circular knitting machine is started, and the cylindrical knitted fabric is moved to the pulling and winding device after forming the fabric at the cylinder mouth of the circular knitting machine, and is raised to the setting. The heat setting roller of the setting temperature descends into the inside of the knitted cylindrical fabric, the cylindrical knitted fabric passes through the gap between the heat insulating cylinder and the heat setting roller, and the outer side of the heat setting roller is in close contact with the knitted cylinder fabric. To achieve the heat setting of the knitted cylinder fabric, the knitted fabric continues to move downwards out of contact with the heat setting roller, and naturally enters the pulling and winding device after the temperature is lowered to complete the entire weaving and setting process; the circular knitting machine is stopped, and the lifting device will The heat setting roller is lifted, and the heat setting roller is raised above the cylinder to be out of contact with the knitted cylindrical fabric.

 The above-mentioned woven fabric synchronization predetermined type process conditions are as follows:

 Heat setting roller height h, heat setting roller outer diameter d, lower cloth speed, setting time t, setting temperature T, knitting cylinder fabric blank width L, setting efficiency p, cylinder diameter D, temperature fluctuation △ t ;

 Heat setting roll outer diameter: 0. 7 d/D 0. 9

 Stereotype time: t=h/v > 1 0 seconds

 Styling temperature: 250 °C > T > 1 50 °C

 Temperature fluctuation: A t 2 °C

 Styling efficiency: p = 2L / π d > 85%.

 The setting temperature affects the setting efficiency, which ultimately affects the finished width and square meter weight of the knitted fabric. The set temperature of the heat setting roller is determined according to the comprehensive factors such as the type and proportion of the thermoplastic fiber and the length of the setting time.

 Temperature fluctuation: A t 2 °C

 Temperature fluctuations affect the stability of the finished fabric width and square weight of the knitted fabric, and the temperature fluctuations are ensured by the precision temperature control system.

 Styling efficiency: p=2L/d > 85%

 The setting efficiency is affected by the above comprehensive factors, and the synergistic adjustment ensures that the setting efficiency is in the above range to ensure that the finished width and square weight of the knitted fabric meet the process requirements.

The above thermoplastic fibers are mainly one or more of fibers such as spandex, polyester, acrylic, and nylon. Example 1:

 The synchronous sizing device of the above embodiment is attached to a 18 吋 28G knitting single-sided circular machine. The woven fabrics are 40S cotton + 20D spandex high elastic jersey. Knitting single-sided small circular machine rotates at 20 rpm, the number of equipment is 52, the lower cloth speed is 13 mm/sec, the heat setting roller height is 300 mm, the heat setting roller diameter is 370 mm, the setting temperature For 20 (TC:, the cylindrical knitted fabric passes through the outer side of the heat setting roller for a characterization time of 23 seconds. The final size of the cylindrical knit fabric blank is 520--530 mm. The fabric is dyed again. ——Dehydration--wet expansion-drying one-to-one cylinder pre-shrinking and rolling, and finally the finished circular knitted fabric has a width of 460 mm and a square weight of 160 g/m2. Appearance quality of fabric, shrinkage rate The square meter weight has reached the design requirements.

 Example 2:

 The synchronous sizing device of the above embodiment is attached to a 30 吋 28G knitting single-sided circular machine. The woven fabrics are 150D polyester +30D spandex high-elastic jersey. The knitting single-sided circular machine has a rotation speed of 16 rpm, the number of equipment is 90, the lower cloth speed is 20 mm/sec, the heat setting roller height is 320 mm, the heat setting roller diameter is 600 mm, and the setting temperature is 190. °C:, The cylindrical knitted fabric passes the qualitative time of the outer side of the heat setting roller for 16 seconds. The finished cylinder knit surface blank has a width of 900--930 mm. The fabric was dyed again - dewatered - profiled - tentered and shaped, and finally the finished fabric of the flat knit fabric was 1750 mm wide and the weight per square meter was 180 g / m2. The appearance quality, shrinkage, and square weight of the fabric meet the design requirements.

 Of course, the above description is not intended to limit the invention, and the present invention is not limited to the above examples, and those skilled in the art should make changes, modifications, additions or substitutions within the scope of the invention. It belongs to the scope of protection of the present invention.

Claims

claims 1. A synchronous setting circular knitting machine, including a frame, a creel support, a needle cylinder, a pulling and winding device, a control box and a synchronous setting device, characterized in that the synchronous setting device is included in the creel support A heat setting roller with a lifting device is installed on it. The heat setting roller is connected to a heat setting roller control box. The heat setting roller is located above the pulling cloth roller in the pulling and winding device, and The lift is driven up and down by the lifting device, the axis of the heat setting roller coincides with the axis of the needle cylinder, and the outer diameter of the heat setting roller is smaller than the inner diameter of the needle cylinder. 2. The synchronous shaping circular knitting machine according to claim 1, characterized in that, the lifting device includes a cylinder mounting plate, a cylinder, a trachea, a throttle valve, and a solenoid valve, and the cylinder mounting plate is installed horizontally on the creel support At the top, the upper end of the cylinder is fixed on the cylinder mounting plate, the heat setting roller is installed on the piston rod of the cylinder, the cylinder is connected to the external compressed air joint through the air pipe, throttle valve, and solenoid valve, and the solenoid valve is connected to the The control box is connected. 3. The synchronous shaping circular knitting machine according to claim 1 or 2, characterized in that a cloth collecting and insulating cylinder is installed on the needle cylinder, the axis of the cloth collecting and insulating cylinder coincides with the axis of the needle cylinder, and the cloth collecting and insulating cylinder is The outer diameter of the heating cylinder is smaller than the inner diameter of the needle cylinder, and the inner diameter of the heat-insulating cylinder is larger than the outer diameter of the heat-setting roller. The heat-setting roller descends to the internal position of the cylindrical knitted fabric in the needle cylinder, and the heat-setting roller and A gap passing through the cylindrical knitted fabric is formed between the collecting and insulating cylinders, the heat setting roller rises to a position above the needle cylinder, and the heat setting roller is separated from the cylindrical knitted fabric. 4. The synchronous shaping circular knitting machine according to claim 3, characterized in that, 3 cylinder piston rod holes are arranged around the cylinder mounting plate, there are 3 cylinders, and 3 cylinder pistons of the 3 cylinders The rods are vertically inserted into the corresponding cylinder piston rod holes, and the heat setting roller is installed at the lower end of the three cylinder piston rods. 5. The synchronous setting circular knitting machine according to claim 1 or 2, characterized in that a temperature sensor is installed in the heat setting roller, and the temperature sensor is connected to the heat setting roller control box; the heat setting roller The barrel is equipped with a temperature setting and display device and a heating control element. The temperature setting and display device and heating control element are installed on the heat setting roller control box. 6. The synchronous setting circular knitting machine according to claim 4, characterized in that a temperature sensor is installed in the heat setting roller, and the temperature sensor is connected to the heat setting roller control box; the heat setting roller configuration Temperature setting and display device and heating control element. The temperature setting and display device and heating control element are installed on the heat setting roller control box. 7. The synchronous setting circular knitting machine according to claim 1 or 2, characterized in that the force p heating method of the heat setting roller is electromagnetic induction force p heating, resistance wire force p heating or thermal oil heating. 8. A method for producing knitted fabrics containing thermoplastic fibers using the synchronous shaping circular knitting machine described in claims 1-7, characterized in that it includes the following A process or B process: Process A: Use the above-mentioned synchronous setting circular knitting machine to perform synchronous pre-setting → dyeing → dehydration → cutting width → open width post-setting, and finally obtain the finished open-width knitted fabric; Process B: The above-mentioned synchronous setting circular knitting machine is used to perform synchronous pre-styling → dyeing → dehydration → wet expansion → drying → cylinder pre-shrinking and calendering, and finally the finished cylinder knitted fabric is obtained. 9. The method for producing knitted fabrics containing thermoplastic fibers on a synchronously shaping circular knitting machine according to claim 8, characterized in that the synchronous preshaping process of weaving fabrics includes the following steps: the circular knitting machine is started, and the cylindrical knitted fabric is knitted The needle cylinder mouth of the circular knitting machine forms the fabric and then moves towards the pulling and winding device. At the same time, the heat setting roller that has been raised to the set setting temperature descends into the knitted cylinder fabric, and the cylindrical knitted fabric passes through the collecting and insulating cylinder. In the gap between the heat setting roller and the heat setting roller, the outer surface of the heat setting roller is in close contact with the knitted cylindrical fabric to achieve heat setting of the knitted cylindrical fabric. The knitted fabric continues to move downward and out of contact with the heat setting roller, naturally After cooling down, it enters the pulling and winding device to complete the entire weaving and shaping process; the circular knitting machine stops, the lifting device lifts the heat setting roller, and the heat setting roller rises above the needle cylinder and breaks away from the knitted cylinder fabric. 10. A method for producing knitted fabrics containing thermoplastic fibers by using a synchronous shaping circular knitting machine according to claim 8 or 9, characterized in that the synchronous presetting process conditions of the fabric are as follows: Heat setting roller height h, Heat setting roller Cylinder outer diameter d, fabric unloading speed, setting time t, setting temperature T, knitted cylindrical fabric blank unloading width L, setting efficiency p, needle cylinder diameter D, temperature fluctuation △ t; Heat setting roller outer diameter: 0. 7 d/D 0. 9 Setting time: t=h/v > 10 seconds Setting temperature: 250 °C > T > 1 50 °C Temperature fluctuation: A t 2 °C Setting efficiency: p=2L/ π d > 85%.