Ultra-large type high-speed plastic extrusion flat film and flat filament unit

Abstract

The invention discloses an ultra-large type high-speed plastic extrusion flat film and flat filament unit which comprises an extruder, a water tank, a film lifting and filament cutting device, a hot air oven, a drafting mechanism, a shaping mechanism and a filament collecting mechanism. The drafting mechanism comprises a drafting rack, a drafting transmission shaft, a drafting shaft unloading device, a drafting roller, a drafting roller connecting sleeve, a drafting roller tensioning sleeve and a drafting roller motor; the number of the drafting transmission shafts is at least three, the drafting transmission shafts are arranged in parallel, the drafting shaft unloading devices extend to the middles of the drafting transmission shafts from one ends of the drafting transmission shafts, and at least two drafting roller connecting sleeves arranged in the radial direction of the drafting roller are arranged in the drafting roller. And a drafting roller tensioning sleeve is arranged between the drafting roller connecting sleeve far away from the drafting rack and the drafting transmission shaft. The ultra-large type high-speed plastic extrusion flat film and flat filament unit is high in operation speed, high in production efficiency, good in stability, low in energy consumption, capable of effectively reducing the production cost, excellent in product mechanical performance and stable in quality.

Description

Technical Field

[0001] The invention relates to an ultra-large high-speed plastic extrusion flat film and flat wire machine unit, belonging to the field of plastic weaving. Background Art

[0002] As a basic material in the plastic weaving industry, the annual consumption of plastic flat wire is very huge. In view of the fact that plastic weaving production enterprises are new labor-intensive enterprises, they employ many people, have high electricity consumption, are in a mature market, and have very fierce homogeneous competition, they must produce on a large scale to reflect their competitive advantages. User manufacturers often miss the opportunity to occupy the market and expand production due to the limitations of the specifications and performance of plastic flat film flat wire extruder units. Plastic extruders and their auxiliary machines require a lot of heating and extrusion shearing during the production process, and consume a lot of electricity during the production process. Therefore, energy consumption costs account for a large proportion of production costs; plastic weaving production enterprises are new labor-intensive enterprises, employing many people, and today's labor costs are getting higher and higher. Enterprises must improve the work efficiency of workers, thereby reducing the labor cost per unit of production capacity.

[0003] Chinese patent document CN204138840U discloses that the utility model provides a production line of high-strength PET flat yarn for container bags, including an extruder, a metering pump, a die head, a cooling tank, a cutting device, a drafting hot water tank, a first drafting roller, a drafting oven, a second drafting roller, a retraction oven, a shaping roller and a winder connected in sequence.

[0004] Chinese patent document CN101618599B discloses a plastic flat wire traction and shaping device, including a support body, a plurality of traction rollers, and a motor for driving the traction rollers, each traction roller including a roller and a core shaft; one end of each core shaft is located inside the support body and the other end extends out of the side of the support body, each roller is installed on one side of the support body, each core shaft is fixedly connected to the support body, and each roller is rotatably assembled on the corresponding core shaft using at least two bearings; each roller is also integrally connected to a pulley ring at one end close to the support body; the motor is connected to a main pulley, and the main pulley drives the pulley rings of each roller through a transmission belt.

[0005] The maximum die width of the existing plastic extrusion flat film flat wire unit is 2600mm, the linear speed of the drafting roller is 280m / min, and the single machine capacity is 15 tons / day, which is average. The increase in unit capacity has put forward higher requirements on the stability of the operation of each component. Summary of the invention

[0006] The technical problem to be solved by the present invention is to propose an ultra-large high-speed plastic extrusion flat film flat wire unit with fast running speed, high production efficiency, good stability, low energy consumption, effective reduction of production costs, excellent product mechanical properties and stable quality.

[0007] The technical solution provided by the present invention for solving the above technical problems is: an ultra-large high-speed plastic extrusion flat film flat wire unit, comprising an extruder, a water tank, a film lifting and wire splitting device, a hot air oven, a drafting mechanism, a shaping mechanism and a wire collecting mechanism arranged in sequence from front to back; the drafting mechanism comprises a drafting frame, a drafting transmission shaft, a drafting shaft unloading device, a drafting roller, a drafting roller connecting sleeve, a drafting roller tensioning sleeve and a drafting roller motor, the drafting transmission shafts have at least three and are arranged parallel to each other, the drafting shaft unloading device is arranged in the horizontal direction and one end is fixedly connected to the drafting frame, the drafting transmission shaft is inserted in the drafting shaft unloading device and is coaxially arranged with the drafting shaft unloading device, the drafting shaft unloading device extends from one end of the drafting transmission shaft to the middle of the drafting transmission shaft, and the two ends of the drafting shaft unloading device are connected by The bearing is rotatably connected with the drafting transmission shaft, the drafting roller sleeve is arranged on the drafting transmission shaft and is coaxially arranged with the drafting transmission shaft, at least two drafting roller connecting sleeves arranged along the radial direction of the drafting roller are arranged in the drafting roller, the drafting roller connecting sleeve close to the drafting frame is sleeved on the drafting transmission shaft, and a drafting roller tensioning sleeve is arranged between the drafting roller connecting sleeve far away from the drafting frame and the drafting transmission shaft, the drafting roller tensioning sleeve is sleeved on the drafting transmission shaft by its inner ring, the outer ring of the drafting roller tensioning sleeve is abutted against the edge of the center hole of the drafting roller connecting sleeve, the drafting roller tensioning sleeve expands the inner ring and the outer ring of the drafting roller tensioning sleeve by adjusting the bolts on the drafting roller tensioning sleeve, so that the drafting transmission shaft is rigidly connected to the drafting roller connecting sleeve; one end of at least one drafting transmission shaft is connected to the motor shaft of the drafting roller motor through a coupling.

[0008] The above-mentioned drafting transmission shaft has five, two of which are arranged side by side and one end of which is connected to the motor shaft of the corresponding drafting roller motor through a coupling. The ends of the two drafting transmission shafts are both sleeved and fixed with a driving pulley, and the other three drafting transmission shafts are both sleeved and fixed with a driven pulley at one end. The three driven pulleys are located above the two driving pulleys, and a transition pulley is respectively provided below the two sides of the two driving pulleys, and a tensioning pulley is provided below the middle of the two driving pulleys; the flat belt passes through in sequence below the transition pulley on one side, above the driven pulley on one side, below the driving pulley on one side, above the middle driven pulley, below the driving pulley on the other side, above the other driven pulley, below the transition pulley on the other side, and above the tensioning pulley, so that the driving pulley, the driven pulley, the transition pulley and the tensioning pulley form a belt transmission.

[0009] The surface linear speed of the drafting roller of the drafting mechanism is 300 m / min to 800 m / min.

[0010] A mixing device is provided at the feed inlet of the extruder, a new material bin and an edge film crushing and recovery device connected to the mixing device are provided above the mixing device, a screw feeder is provided in front of the extruder, and the discharge port of the screw feeder is located directly above the new material bin; a die head is provided on the rear side of the extruder, a die lip is provided at the bottom of the die head, and the length of the die lip is 2700 to 6000 mm.

[0011] The film lifting and slicing device comprises a water squeezing roller, a water suction pipe, a film lifting roller, a preheating roller, a slicing device, a traction roller and a film lifting and slicing frame; the water squeezing roller, the film lifting roller, the preheating roller and the traction roller are all arranged in the horizontal direction and are rotatably connected to the film lifting and slicing frame, the slicing device and the water suction pipe are all arranged in the horizontal direction and are fixedly connected to the film lifting and slicing frame, the water squeezing roller is located above the water tank, the water suction pipe is provided with a negative pressure groove arranged along its length direction, and one end of the water suction pipe is connected to a negative pressure fan The membrane sheet is connected, there are at least two water suction pipes which are staggered on both sides of the membrane sheet, the membrane lifting roller is located above the water suction pipe, the preheating roller is located behind the membrane lifting roller, there are two preheating rollers which are adjacent to each other, the wire cutting device is located behind the preheating roller, the wire cutting device is composed of cutting knives arranged side by side, the traction roller is located behind the traction device, there are two traction rollers which are adjacent to each other, and one side of the water squeezing roller, the membrane lifting roller and the traction roller is provided with a pressure roller which matches with it.

[0012] The above-mentioned preheating roller includes a support shaft, a heat-conducting roller, a heating unit and a power cord. The support shaft is a hollow shaft, the heat-conducting roller is sleeved outside the support shaft, the two ends of the heat-conducting roller are rotatably connected to the two ends of the support shaft through bearings, the heating unit is fixedly connected to the outer surface of the support shaft, one end of the power cord is connected to the heating unit, and the other end of the power cord penetrates into the support shaft and extends outside the support shaft.

[0013] The above-mentioned film lifting and wire cutting machine frame is provided with a pressing block temperature sensor, which is in contact with one of the preheating rollers. The pressing block temperature sensor is used to detect the surface temperature of the heat-conducting roller to control the on and off of the heating unit. The heating unit is an electric heating wire, and the working temperature of the preheating roller is 40°C to 90°C.

[0014] The hot air drying oven comprises a box body, wherein a drying channel for the flat yarn to pass through is provided in the box body, a wire inlet is provided in the front of the drying channel, a wire outlet is provided in the rear of the drying channel, air inlets are provided above and below the drying channel, an air inlet is provided at one end of the air inlet and connected to an end of the drying channel close to the wire outlet, an air outlet is provided at the other end of the air inlet and connected to an end of the drying channel close to the wire inlet, the air outlet is curved and gradually narrows from the air inlet to the drying channel, at least two fans are provided on the box body, the impeller of the fan is located in the air inlet, a heater is provided between the air inlet and the impeller, and the working temperature in the drying channel is 130°C to 190°C.

[0015] The above-mentioned shaping mechanism includes a shaping frame, a shaping transmission shaft, a shaping roller and a rotating joint; the shaping transmission shaft is installed on the shaping frame; the shaping roller includes an outer roller, an inner roller and a support member, the outer roller is sleeved outside the inner roller, the support member is located between the outer roller and the inner roller and connects the inner wall of the outer roller with the outer wall of the inner roller, the support member is a spiral protrusion, a reinforcement ring or a support block, a sandwich is formed between the outer roller and the inner roller, the shaping transmission shaft is a hollow shaft, the end of the shaping transmission shaft close to the shaping frame is connected to the rotating joint, and the end of the shaping transmission shaft away from the shaping frame is connected to the sandwich.

[0016] The above-mentioned shaping mechanism also includes a shaping shaft unloading device, a shaping roller connecting sleeve, a shaping roller tensioning sleeve, a shaping roller motor, a driving pulley, and a driven pulley; the shaping shaft unloading device is arranged in the horizontal direction and one end is fixedly connected to the shaping frame, the shaping transmission shaft is inserted in the shaping shaft unloading device and is coaxially arranged with the shaping shaft unloading device, the shaping shaft unloading device extends from one end of the shaping transmission shaft to the middle of the shaping transmission shaft, and the two ends of the shaping shaft unloading device are rotatably connected to the shaping transmission shaft through bearings, the shaping roller sleeve is arranged on the shaping transmission shaft and is coaxially arranged with the shaping transmission shaft, at least two shaping roller connecting sleeves arranged along the radial direction of the shaping roller are provided in the shaping roller, the shaping roller connecting sleeve close to the shaping frame is sleeved on the shaping transmission shaft, and a shaping roller tensioning sleeve is provided between the shaping roller connecting sleeve away from the shaping frame and the shaping transmission shaft The tightening sleeve, the shaping roller tensioning sleeve is sleeved on the shaping transmission shaft by its inner ring, the outer ring of the shaping roller tensioning sleeve is abutted against the edge of the center hole of the shaping roller connecting sleeve, and the shaping roller tensioning sleeve expands the inner ring and the outer ring of the shaping roller tensioning sleeve by adjusting the bolts on the shaping roller tensioning sleeve, so that the shaping transmission shaft is rigidly connected to the shaping roller connecting sleeve; the shaping mechanism includes a group of heating shaping roller assemblies and a group of cooling shaping roller assemblies, the shaping roller of the heating shaping roller assembly is provided with hot oil in the interlayer, and the shaping roller of the cooling shaping roller assembly is provided with cold water in the interlayer; the heating shaping roller assembly and the cooling shaping roller assembly each include at least two shaping rollers, and a driven pulley is sleeved and fixed on one end of the shaping roller close to the shaping frame, and a driving pulley is sleeved and fixed on the motor shaft of the shaping roller motor, and the driving pulley and the driven pulley form a belt transmission mechanism through a belt.

[0017] The above-mentioned wire collecting mechanism includes a wire winding machine for collecting finished products and a waste wire collecting device for collecting waste wires.

[0018] The present invention has positive effects: (1) The ultra-large high-speed plastic extrusion flat film flat yarn unit of the present invention has increased the width of the die head to more than 3000 mm, and the surface linear speed of the drafting roller can reach more than 500 m / min, which can effectively increase the output of a single machine from the original 15 tons per day to more than 20 tons per day, thereby reducing the production cost. By improving the film lifting and wire splitting device, hot air oven and drafting mechanism, the product has high mechanical strength and stable performance indicators. The relative strength of the flat yarn can reach 0.56 N / tex, the elongation at break is more than 18%, and the fiber density deviation value is ±5%.

[0019] (2) In the ultra-large high-speed plastic extrusion flat film flat wire unit of the present invention, a large amount of cooling water is removed from the film through a water squeezing roller and a water suction pipe, and the residual water passes through a preheating roller to evaporate the water on the front and back sides of the film. The dried film is cut into uniform flat wires by the blades of the wire-cutting device. Driven by the traction roller, the flat wire generates tension with the subsequent drawing unit to ensure the consistency of the drawing pressure. The preheating roller adopts a hollow structure, and the rotating shaft with a heating unit is fixed, and the external heat-conducting roller rotates. The outer surfaces of the two heat-conducting rollers after being heated are fully rotated and contacted with the front and back sides of the film, respectively, to dry and soften the film. It effectively avoids the electrochemical reaction between static electricity and water during the blade cutting process, which corrodes the blade. At the same time, the dried and softened film is easier to cut, which prolongs the service life of the tool and avoids the uneven heating of the undried flat wire during the subsequent heating process, thereby preventing defective products.

[0020] (3) The ultra-large high-speed plastic extrusion flat film flat wire unit of the present invention passes the material through the box from the position of the drying channel, and a centrifugal fan is set in the air inlet to fully inhale air. A heater is set in front of the centrifugal fan to fully stir the inhaled hot air, and then the air outlets of the two air inlets are bent to gradually send the heated air to the drying channel between the two air inlets, which significantly improves the uniformity of temperature, thereby achieving product consistency, effectively reducing the problem of broken wire and waste wire caused by temperature difference, and saving product raw materials. The structural design is ingenious, which can achieve the goal of not inhaling and blowing out hot air at the inlet and outlet as much as possible, and the hot air achieves good internal circulation and heat preservation, saving a lot of energy consumption while increasing the service life of the equipment.

[0021] (4) The ultra-large high-speed plastic extrusion flat film flat wire unit of the present invention stretches the material 4 to 12 times in the drafting mechanism. Since the high-multiple drafting and high-speed rotation will generate huge friction, the pulley transmission method is prone to slippage. The present invention adopts dual motor direct drive, using 2 driving wheels to drive 3 transmission wheels, reducing the load of a single driving wheel, improving transmission efficiency, preventing slippage, and improving transmission accuracy. In addition, a load-relief device is provided to minimize the extension length of the rotating end, converting most of the alternating stress generated during rotation into a single-direction load, greatly increasing the rigidity of the equipment, and reducing the fatigue strength, service life and reliability of the main shaft. Then, the concentricity of the roller and the main shaft is adjusted through the tension sleeve on the head to reduce the radial runout of the roller.

[0022] (5) The ultra-large high-speed plastic extrusion flat film flat wire unit of the present invention has an inner roller and an outer roller as the rollers need to be cooled or heated by the medium on the shaping device. Since the outer roller is a thin-walled part with a long length, spiral protrusions, reinforcing rings and support blocks are selectively installed according to product characteristics, and connected to the inner liner by shrink sleeve or plug welding to enhance the overall rigidity of the roller and improve the stability during rotation. At the same time, it can also improve the fluidity of the heating and cooling medium inside the roller and improve the temperature uniformity of the roller surface. The use of spiral protrusions can effectively improve the temperature uniformity of the shaping roller surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The ultra-large high-speed plastic extrusion flat film flat wire machine unit of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a structural schematic diagram of a super large high-speed plastic extrusion flat film flat wire unit according to an embodiment; Figure 2 is a side structural schematic diagram of the drafting mechanism of the embodiment; Figure 3 for Figure 2 A schematic diagram of the top view of the drafting mechanism; Figure 4 for Figure 2 Schematic diagram of the transmission structure of the drafting mechanism; Figure 5 It is a structural schematic diagram of a film lifting and slicing device according to an embodiment; Figure 6 for Figure 5 A schematic diagram of the structure of the preheating roller of the film lifting and slitting device; Figure 7 It is a structural schematic diagram of a hot air oven of an embodiment; Figure 8 It is a structural schematic diagram of the shaping mechanism of the embodiment; Fig. 9 for Figure 1 Schematic diagram of the partial structure of the extruder.

[0025] The above-mentioned reference numerals are as follows: Extruder 11, die head 111, new material bin 112, edge film crushing and recovery device 113, mixing device 114, water tank 12, screw feeder 13, Film lifting and slitting device 2, water squeezing roller 21, water suction pipe 22, film lifting roller 23, preheating roller 24, support shaft 241, heat transfer roller 242, heating unit 243, power line 244, slitting device 25, traction roller 26, pressure roller 27, pressing block temperature sensor 28, film lifting and slitting frame 29, Hot air oven 3, box body 31, heater 32, fan 33, impeller 331, air inlet 34, air inlet duct 35, air outlet 36, drying channel 37, wire inlet 38, wire outlet 39, Drafting mechanism 4, drafting frame 40, drafting transmission shaft 41, drafting shaft unloading device 42, drafting roller 43, drafting roller connecting sleeve 44, drafting roller tensioning sleeve 45, drafting roller motor 46, driving pulley 471, driven pulley 472, transition pulley 473, tensioning pulley 474, flat belt 475, coupling 476, The shaping mechanism 5, the shaping frame 50, the shaping transmission shaft 51, the shaping shaft unloading device 52, the shaping roller 53, the outer roller 531, the inner roller 532, the interlayer 533, the support 534, the shaping roller connecting sleeve 54, the shaping roller tensioning sleeve 55, the shaping roller motor 56, the driving pulley 57, the driven pulley 58, the rotary joint 59, Fiber separation winding machine 6, waste fiber collecting device 7. DETAILED DESCRIPTION Example

[0026] See Figures 1 to 9 The present embodiment is a super large high-speed plastic extrusion flat film flat wire unit, comprising an extruder 11, a water tank 12, a film lifting and wire cutting device 2, a hot air oven 3, a drafting mechanism 4, a shaping mechanism 5 and a wire collecting mechanism arranged in sequence from front to back. The drafting mechanism 4 comprises a drafting frame 40, a drafting transmission shaft 41, a drafting shaft unloading device 42, a drafting roller 43, a drafting roller connecting sleeve 44, a drafting roller tensioning sleeve 45 and a drafting roller motor 46. There are five drafting transmission shafts 41 and they are arranged parallel to each other. The drafting shaft unloading device 42 is arranged in the horizontal direction and one end is fixedly connected to the drafting frame 40. The drafting transmission shaft 41 is inserted into the drafting shaft unloading device 42 and is arranged coaxially with the drafting shaft unloading device 42. The drafting shaft unloading device 42 extends from one end of the drafting transmission shaft 41 to the middle of the drafting transmission shaft 41. The two ends of the drafting shaft unloading device 42 are rotatably connected to the drafting transmission shaft 41 through bearings. The drafting roller 43 is sleeved on the drafting transmission shaft 41 and is coaxially arranged with the drafting transmission shaft 41. Two drafting roller connecting sleeves 44 arranged along the radial direction of the drafting roller 43 are arranged in the drafting roller 43. The drafting roller connecting sleeve 44 close to the drafting frame 40 is sleeved on the drafting transmission shaft 41, and a drafting roller tensioning sleeve 45 is arranged between the drafting roller connecting sleeve 44 far from the drafting frame 40 and the drafting transmission shaft 41. The drafting roller tensioning sleeve 45 is sleeved on the drafting transmission shaft 41 by its inner ring, and the outer ring of the drafting roller tensioning sleeve 45 abuts against the edge of the center hole of the drafting roller connecting sleeve 44. The inner ring and outer ring of the drafting roller tensioning sleeve 45 are expanded by adjusting the bolts on the drafting roller tensioning sleeve 45, so that the drafting transmission shaft 41 is rigidly connected to the drafting roller connecting sleeve 44.

[0027] Two drafting transmission shafts 41 are arranged side by side and one end of each is connected to the motor shaft of the corresponding drafting roller motor 46 through a coupling 476. The ends of the two drafting transmission shafts 41 are sleeved with a driving pulley 471. The other three drafting transmission shafts 41 are arranged side by side and one end of each is sleeved with a driven pulley 472. The three driven pulleys 472 are located above the two driving pulleys 471, and a transition pulley 473 is provided below the two sides of the two driving pulleys 471, and a tension pulley 474 is provided below the middle of the two driving pulleys 471. The flat belt 475 passes in sequence from under the transition pulley 473 on one side, over the driven pulley 472 on one side, under the driving pulley 471 on one side, over the driven pulley 472 in the middle, under the driving pulley 471 on the other side, over the other driven pulley 472, under the transition pulley 473 on the other side, and over the tensioning pulley 474, so that the driving pulley 471, the driven pulley 472, the transition pulley 473 and the tensioning pulley 474 form a belt drive.

[0028] The surface linear speed of the drafting roller 43 of the drafting mechanism 4 is 300 m / min to 800 m / min.

[0029] A mixing device 114 is provided at the feed inlet of the extruder 11, a new material bin 112 and an edge film crushing and recovery device 113 connected to the mixing device 114 are provided above the mixing device 114, a screw feeder 14 is provided in front of the extruder 11, and the discharge port of the screw feeder 14 is located directly above the new material bin 112. A die head 111 is provided at the rear side of the extruder 11, and a die lip is provided at the bottom of the die head 111, and the length of the die lip is 3000 mm.

[0030] The film lifting and threading device 2 comprises a water squeezing roller 21, a water suction pipe 22, a film lifting roller 23, a preheating roller 24, a threading device 25, a traction roller 26 and a film lifting and threading frame 29. The water squeezing roller 21, the film lifting roller 23, the preheating roller 24 and the traction roller 26 are all arranged in the horizontal direction and are rotatably connected to the film lifting and threading frame 29. The threading device 25 and the water suction pipe 22 are all arranged in the horizontal direction and are fixedly connected to the film lifting and threading frame 29. The water squeezing roller 21 is located above the water tank 12, and the water suction pipe 22 is provided with a negative pressure groove arranged along its length direction, and one end of the water suction pipe 22 is connected to a negative pressure fan. There are at least two water suction pipes 22, which are arranged alternately on both sides of the diaphragm up and down. The film lifting roller 23 is located above the water suction pipe 22, the preheating roller 24 is located behind the film lifting roller 23, there are two preheating rollers 24 and they are arranged adjacent to each other, and the wire cutting device 25 is located behind the preheating roller 24. The wire cutting device 25 is composed of cutting knives arranged side by side, and the traction roller 26 is located behind the wire cutting device 25. There are two traction rollers 26 and they are arranged adjacent to each other up and down, and one side of the water squeezing roller 21, the film lifting roller 23 and the traction roller 26 is provided with a pressure roller 27 matched therewith.

[0031] The preheating roller 24 includes a support shaft 241, a heat-conducting roller 242, a heating unit 243 and a power cord 244. The support shaft 241 is a hollow shaft, the heat-conducting roller 242 is sleeved outside the support shaft 241, both ends of the heat-conducting roller 242 are rotatably connected to both ends of the support shaft 241 through bearings, the heating unit 243 is fixedly connected to the outer surface of the support shaft 241, one end of the power cord 244 is connected to the heating unit 243, and the other end of the power cord 244 penetrates into the support shaft 241 and extends to the outside of the support shaft 241.

[0032] A pressing block temperature sensor 28 is provided on the film lifting and slitting frame 29, and the pressing block temperature sensor 28 is in contact with one of the preheating rollers 24. The pressing block temperature sensor 28 is used to detect the surface temperature of the heat-conducting roller 242 so as to control the on and off of the heating unit 243. The heating unit 243 is an electric heating wire, and the working temperature of the preheating roller 24 is 55°C.

[0033] The hot air drying oven 3 comprises a box body 31, in which a drying channel 37 for the flat yarn to pass is arranged, a wire inlet 38 is arranged in front of the drying channel 37, a wire outlet 39 is arranged in the rear of the drying channel 37, air inlets 35 are arranged above and below the drying channel 37, one end of the air inlet 35 is provided with an air inlet 34 connected to one end of the drying channel 37 close to the wire outlet 39, the other end of the air inlet 35 is provided with an air outlet 36 connected to one end of the drying channel 37 close to the wire inlet 38, the air outlet 36 is curved and gradually narrows from the air inlet 35 to the drying channel 37, at least two fans 33 are arranged on the box body 31, an impeller 331 of the fan 33 is located in the air inlet 35, a heater 32 is arranged between the air inlet 34 and the impeller 331, the working temperature in the drying channel 37 is 160°C, and the temperature fluctuation is ±2°C.

[0034] The shaping mechanism 5 comprises a shaping frame 50, a shaping transmission shaft 51, a shaping roller 53 and a rotary joint 59. The shaping transmission shaft 51 is mounted on the shaping frame 50. The shaping roller 53 comprises an outer roller 531, an inner roller 532 and a support member 534, wherein the outer roller 531 is sleeved outside the inner roller 532, the support member 534 is located between the outer roller 531 and the inner roller 532 and connects the inner wall of the outer roller 531 with the outer wall of the inner roller 532, the support member 534 is a spiral protrusion, a reinforcing ring or a support block, an interlayer 533 is formed between the outer roller 531 and the inner roller 532, the shaping transmission shaft 51 is a hollow shaft, one end of the shaping transmission shaft 51 close to the shaping frame 50 is connected to the rotary joint 59, and one end of the shaping transmission shaft 51 away from the shaping frame 50 is connected to the interlayer 533.

[0035] The shaping mechanism 5 also includes a shaping shaft unloading device 52, a shaping roller connecting sleeve 54, a shaping roller tensioning sleeve 55, a shaping roller motor 56, a driving pulley 57, and a driven pulley 58. The shaping shaft unloading device 52 is arranged in the horizontal direction and one end is fixedly connected to the shaping frame 50. The shaping transmission shaft 51 is inserted into the shaping shaft unloading device 52 and is coaxially arranged with the shaping shaft unloading device 52. The shaping shaft unloading device 52 extends from one end of the shaping transmission shaft 51 to the middle of the shaping transmission shaft 51. Both ends of the shaping shaft unloading device 52 are rotatably connected to the shaping transmission shaft 51 through bearings. The shaping roller 53 is sleeved on the shaping transmission shaft 51 and is coaxially arranged with the shaping transmission shaft 51. At least two shaping roller connecting sleeves arranged along the radial direction of the shaping roller 53 are arranged in the shaping roller 53. 54, the shaping roller connecting sleeve 55 close to the shaping frame 50 is sleeved on the shaping transmission shaft 51, and a shaping roller tensioning sleeve 55 is arranged between the shaping roller connecting sleeve 54 far from the shaping frame 50 and the shaping transmission shaft 51, and the shaping roller tensioning sleeve 55 is sleeved on the shaping transmission shaft 51 by its inner ring, and the outer ring of the shaping roller tensioning sleeve 55 abuts against the edge of the center hole of the shaping roller connecting sleeve 54, and the shaping roller tensioning sleeve 55 expands the inner and outer rings of the shaping roller tensioning sleeve 55 by adjusting the bolts on the shaping roller tensioning sleeve 55, so that the shaping transmission shaft 51 is rigidly connected to the shaping roller connecting sleeve 54. The shaping mechanism 5 includes a group of heating shaping roller assemblies and a group of cooling shaping roller assemblies, and the interlayer 533 of the shaping roller 53 of the heating shaping roller assembly is provided with hot oil, and the interlayer 533 of the shaping roller 53 of the cooling shaping roller assembly is provided with cold water. The heating setting roller assembly and the cooling setting roller assembly each include at least two setting rollers 53, a driven pulley 58 is sleeved and fixed on one end of the setting roller 53 close to the setting frame 50, a driving pulley 57 is sleeved and fixed on the motor shaft of the setting roller motor 56, and the driving pulley 57 and the driven pulley 58 form a belt transmission mechanism through a belt.

[0036] The wire collecting mechanism comprises a wire winding machine 6 for collecting finished products and a waste wire collecting device 7 for collecting waste wires.

[0037] During operation, after the plastic flat film is extruded, it passes through a water tank 12 filled with cooling water and reaches the film lifting and slitting device 13. The plastic flat film passes through the water squeezing roller 21, the water suction pipe 22, the film lifting roller 23, the preheating roller 24, the slitting device 25, and the traction roller 26 in sequence. The temperature of the preheating roller 24 is 50°C. The slitting device 25 cuts the plastic flat film into filaments. The flat filaments are then dried in the hot air oven 3 in sequence. The length is stretched to 5 times the original length through the drafting mechanism 4. The roller surface linear speed of the drafting mechanism is 500m / min. After passing through the shaping mechanism 5, the tensile stress generated during the drafting process is released, so that the flat filament state is stable. Finally, the constant tension of the filament winding machine 6 is collected into a roll.

[0038] Obviously, the above embodiments are merely examples for clearly illustrating the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. An ultra-large high-speed plastic extrusion flat film flat wire unit, characterized in that: The invention comprises an extruder (11), a water tank (12), a film lifting and slitting device (2), a hot air oven (3), a drafting mechanism (4), a shaping mechanism (5) and a wire collecting mechanism which are arranged in sequence from front to back; the drafting mechanism (4) comprises a drafting frame (40), a drafting transmission shaft (41), a drafting shaft unloading device (42), a drafting roller (43), a drafting roller connecting sleeve (44), a drafting roller tensioning sleeve (45) and a drafting roller motor (46); the drafting transmission shaft (41) has at least three and is arranged parallel to each other. The drafting shaft unloading device (42) is arranged in the horizontal direction and one end is fixedly connected to the drafting frame (40). The drafting transmission shaft (41) is inserted into the drafting shaft unloading device (42) and is coaxially arranged with the drafting shaft unloading device (42). The drafting shaft unloading device (42) extends from one end of the drafting transmission shaft (41) to the middle of the drafting transmission shaft (41). Both ends of the drafting shaft unloading device (42) are rotatably connected to the drafting transmission shaft (41) through bearings. The drafting roller (43) is sleeved The drafting roller (43) is provided on the drafting transmission shaft (41) and is coaxially arranged with the drafting transmission shaft (41). At least two drafting roller connecting sleeves (44) are arranged in the radial direction of the drafting roller (43). The drafting roller connecting sleeve (44) close to the drafting frame (40) is sleeved on the drafting transmission shaft (41). A drafting roller tensioning sleeve (45) is provided between the drafting roller connecting sleeve (44) far from the drafting frame (40) and the drafting transmission shaft (41). The drafting roller tensioning sleeve (45) is sleeved by its inner ring. The drafting roller tension sleeve (45) is arranged on the drafting transmission shaft (41), the outer ring of the drafting roller tension sleeve (45) abuts against the edge of the center hole of the drafting roller connecting sleeve (44), and the inner ring and outer ring of the drafting roller tension sleeve (45) are expanded by adjusting the bolts on the drafting roller tension sleeve (45), so that the drafting transmission shaft (41) and the drafting roller connecting sleeve (44) are rigidly connected; one end of at least one drafting transmission shaft (41) is connected to the motor shaft of the drafting roller motor (46) through a coupling (476).

2. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 1 is characterized in that: There are five drafting transmission shafts (41), two of which are arranged side by side and one end of which is connected to the motor shaft of the corresponding drafting roller motor (46) through a coupling (476), and the ends of the two drafting transmission shafts (41) are sleeved and fixed with a driving pulley (471), and the other three drafting transmission shafts (41) are arranged side by side and one end of which is sleeved and fixed with a driven pulley (472), and the three driven pulleys (472) are located above the two driving pulleys (471), and a transition pulley (473) is respectively provided below the two sides of the two driving pulleys (471), and the two driving pulleys (471) are A tensioning pulley (474) is provided at the middle lower part; the flat belt (475) passes in sequence below a transition pulley (473) on one side, above a driven pulley (472) on one side, below a driving pulley (471) on one side, above a middle driven pulley (472), below a driving pulley (471) on the other side, above another driven pulley (472), below a transition pulley (473) on the other side, and above a tensioning pulley (474), so that the driving pulley (471), the driven pulley (472), the transition pulley (473), and the tensioning pulley (474) form a belt transmission.

3. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 1 is characterized in that: The surface linear speed of the drafting roller (43) of the drafting mechanism (4) is 300 m / min to 800 m / min.

4. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 1, characterized in that: A mixing device (114) is provided at the feed inlet of the extruder (11), a new material bin (112) and an edge film crushing and recovery device (113) connected to the mixing device (114) are provided above the mixing device (114), a screw feeder (14) is provided in front of the extruder (11), and the discharge port of the screw feeder (14) is located directly above the new material bin (112); a die head (111) is provided at the rear side of the extruder (11), and a die lip is provided at the bottom of the die head (111), and the length of the die lip is 2700 to 6000 mm.

5. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 1, characterized in that: The film lifting and thread cutting device (2) comprises a water squeezing roller (21), a water suction pipe (22), a film lifting roller (23), a preheating roller (24), a thread cutting device (25), a traction roller (26) and a film lifting and thread cutting frame (29); the water squeezing roller (21), the film lifting roller (23), the preheating roller (24) and the traction roller (26) are all arranged in a horizontal direction and are rotatably connected to the film lifting and thread cutting frame (29); the thread cutting device (25) and the water suction pipe (22) are all arranged in a horizontal direction and are fixedly connected to the film lifting and thread cutting frame (29); the water squeezing roller (21) is located above the water tank (12); the water suction pipe (22) is provided with a negative pressure groove arranged along its length direction; the water suction pipe (22) One end of the film strip is connected to a negative pressure fan, the water suction pipe (22) has at least two ends which are staggered and arranged on both sides of the film sheet, the film lifting roller (23) is located above the water suction pipe (22), the preheating roller (24) is located behind the film lifting roller (23), there are two preheating rollers (24) which are arranged adjacent to each other, the wire cutting device (25) is located behind the preheating roller (24), the wire cutting device (25) is composed of cutting knives arranged side by side, the traction roller (26) is located behind the traction roller (25), there are two traction rollers (26) which are arranged adjacent to each other, and one side of the water squeezing roller (21), the film lifting roller (23) and the traction roller (26) is provided with a pressure roller (27) which matches with them.

6. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 5, characterized in that: The preheating roller (24) comprises a support shaft (241), a heat-conducting roller (242), a heating unit (243) and a power cord (244); the support shaft (241) is a hollow shaft; the heat-conducting roller (242) is sleeved outside the support shaft (241); two ends of the heat-conducting roller (242) are rotatably connected to two ends of the support shaft (241) via bearings; the heating unit (243) is fixedly connected to the outer surface of the support shaft (241); one end of the power cord (244) is connected to the heating unit (243); and the power cord (244) is connected to the heating unit (243). The other end of the source line (244) penetrates into the support shaft (241) and extends to the outside of the support shaft (241); a pressing block temperature sensor (28) is provided on the film lifting and thread cutting frame (29), and the pressing block temperature sensor (28) is in contact with one of the preheating rollers (24). The pressing block temperature sensor (28) is used to detect the surface temperature of the heat-conducting roller (242) so as to control the on and off of the heating unit (243). The heating unit (243) is an electric heating wire, and the working temperature of the preheating roller (24) is 40°C to 90°C.

7. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 1, characterized in that: The hot air drying oven (3) comprises a box body (31), wherein a drying passage (37) is provided in the box body (31) for the flat yarn to pass through, a yarn inlet (38) is provided in front of the drying passage (37), a yarn outlet (39) is provided at the rear of the drying passage (37), air inlet ducts (35) are provided above and below the drying passage (37), one end of the air inlet duct (35) is provided with an air inlet (34) which is connected to one end of the drying passage (37) close to the yarn outlet (39), and the other end of the air inlet duct (35) is provided with an air inlet (34) which is connected to one end of the drying passage (37) close to the yarn outlet (39). An air outlet (36) is provided at one end thereof and is connected to an end of the drying passage (37) near the wire inlet (38); the air outlet (36) is curved and gradually narrows from the air inlet (35) to the drying passage (37); at least two fans (33) are provided on the box body (31); an impeller (331) of the fan (33) is located in the air inlet (35); a heater (32) is provided between the air inlet (34) and the impeller (331); and the operating temperature in the drying passage (37) is 130° C. to 190° C.

8. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 1, characterized in that: The shaping mechanism (5) comprises a shaping frame (50), a shaping transmission shaft (51), a shaping roller (53) and a rotating joint (59); the shaping transmission shaft (51) is mounted on the shaping frame (50); the shaping roller (53) comprises an outer roller (531), an inner roller (532) and a support member (534); the outer roller (531) is sleeved outside the inner roller (532); the support member (534) is located between the outer roller (531) and the inner roller (532) and is connected to the outer roller (531). The inner wall of the roller (531) and the outer wall of the inner roller (532), the support member (534) is a spiral protrusion, a reinforcing ring or a support block, a sandwich (533) is formed between the outer roller (531) and the inner roller (532), the shaping transmission shaft (51) is a hollow shaft, one end of the shaping transmission shaft (51) close to the shaping frame (50) is connected to the rotary joint (59), and one end of the shaping transmission shaft (51) away from the shaping frame (50) is connected to the sandwich (533).

9. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 8, characterized in that: The shaping mechanism (5) further comprises a shaping shaft unloading device (52), a shaping roller connecting sleeve (54), a shaping roller tensioning sleeve (55), a shaping roller motor (56), a driving pulley (57), and a driven pulley (58); the shaping shaft unloading device (52) is arranged in a horizontal direction and one end of the shaping shaft unloading device (52) is fixedly connected to the shaping machine frame (50); the shaping transmission shaft (51) is inserted into the shaping shaft unloading device (52) and is coaxially arranged with the shaping shaft unloading device (52); the shaping shaft unloading device (52) extends from one end of the shaping transmission shaft (51) to the shaping frame (50); The shaping shaft unloading device (52) is rotatably connected to the shaping transmission shaft (51) at both ends through bearings. The shaping roller (53) is sleeved on the shaping transmission shaft (51) and is coaxially arranged with the shaping transmission shaft (51). The shaping roller (53) is provided with at least two shaping roller connecting sleeves (54) arranged along the radial direction of the shaping roller (53). The shaping roller connecting sleeve (55) close to the shaping frame (50) is sleeved on the shaping transmission shaft (51). The shaping roller connecting sleeve (54) far from the shaping frame (50) is connected to the shaping transmission shaft (51). 51), the shaping roller tension sleeve (55) is arranged on the shaping transmission shaft (51) by its inner ring, the outer ring of the shaping roller tension sleeve (55) is against the edge of the center hole of the shaping roller connecting sleeve (54), the shaping roller tension sleeve (55) expands the inner ring and the outer ring of the shaping roller tension sleeve (55) by adjusting the bolts on the shaping roller tension sleeve (55), so that the shaping transmission shaft (51) and the shaping roller connecting sleeve (54) are rigidly connected; the shaping mechanism (5) comprises a group of heating shaping roller components and a group of cooling shaping roller components A roller assembly, wherein the interlayer (533) of the shaping roller (53) of the heating shaping roller assembly is provided with hot oil, and the interlayer (533) of the shaping roller (53) of the cooling shaping roller assembly is provided with cold water; the heating shaping roller assembly and the cooling shaping roller assembly each comprise at least two shaping rollers (53), one end of the shaping roller (53) close to the shaping machine frame (50) is sleeved and fixed with a driven pulley (58), a motor shaft of the shaping roller motor (56) is sleeved and fixed with a driving pulley (57), and the driving pulley (57) and the driven pulley (58) form a belt transmission mechanism through a belt.

10. The ultra-large high-speed plastic extrusion flat film flat wire unit according to claim 1, characterized in that: The wire collecting mechanism comprises a wire winding machine (6) for collecting finished products and a waste wire collecting device (7) for collecting waste wires.

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