CN118578626B - Precision twin screw profile extruder - Google Patents

Abstract

The present invention relates to the field of profile production technology, and in particular to a precision twin-screw profile extruder, including a base and an isolation cover clamped on the top of the base, a heater is fixedly connected to the left side of the top of the base, the heater is located in the isolation cover, a guide barrel is fixedly connected to the inner side of the heater, the right side of the guide barrel is cylindrical, and a screw is symmetrically connected to the guide barrel. The present invention allows the profile raw material to be discharged into the guide barrel through a feed hopper, and the screws on the front and back sides rotate to drive the profile raw material to move to the left. The guide plate rotates forward to stir the profile raw material first, so that the profile raw material is heated more evenly and comprehensively, and then the inclined plate shovels the evenly heated profile raw material into the guide hopper, and the profile raw material continues to be discharged into the guide barrel to be mixed and extruded by the screw. In this way, the profile raw material can be evenly heated first through the guide plate, thereby improving the effect of mixed molding of the profile raw material.

Description

Precision twin screw profile extruder

Technical Field

The invention relates to the technical field of profile production equipment, in particular to a precision twin-screw profile extruder.

Background Art

In the production process of profiles, twin-screw extruders are usually required. Twin-screw extruders have good feeding performance, mixing and plasticizing performance, exhaust performance, and extrusion stability. They are currently widely used.

The Chinese invention patent application with publication number CN116533487A discloses a twin-screw extruder device for PVC crust foaming profiles, including a workbench and a twin-screw extruder, wherein the twin-screw extruder is fixedly mounted on the top surface of the workbench, and a die is mounted on the output end of the twin-screw extruder, and a pressure transmitter is mounted inside the die, a gearbox is fixedly mounted on one end of the top surface of the workbench, and a drive motor and a reducer are fixedly mounted on the other side of the gearbox, and a main shaft is mounted on the output end of the drive motor, the main shaft is connected to an output shaft through the reducer, and the output shaft extends through the gearbox. Although the above patent can extrude the profile raw material using a twin screw, due to the shape limitation of the screw, the raw material near the outside of the screw is heated more, and the profile raw material near the axis of the screw is heated less, resulting in uneven heating or insufficient heating, which seriously affects the effect of subsequent mixed molding of the profile raw materials.

The present invention aims to solve the problems existing in the above patents. To this end, a precision twin-screw profile extruder is proposed, which can shovel profile raw materials for dispersed heating, so that the profile raw materials are fully and evenly heated, thereby improving the mixed molding effect of the profile raw materials.

Summary of the invention

In order to overcome the deficiencies in the prior art, the present invention provides a precision twin-screw profile extruder to solve the problem that when a twin-screw extruder is used to extrude profile raw materials, due to the shape limitation of the screw, the raw materials near the outside of the screw are heated more, while the profile raw materials near the axis of the screw are heated less, resulting in uneven heating or insufficient heating.

To achieve the above-mentioned purpose, the present invention discloses a precision twin-screw profile extruder, comprising a base and an isolation cover clamped on the base, a heater located in the isolation cover is fixedly connected to the top of the base, a material guide barrel is fixedly connected to the heater horizontally, the right side of the material guide barrel is cylindrical, a screw is symmetrically rotatably connected to the material guide barrel, the right side of the screw is a smooth cylinder, the smooth cylindrical position of the screw is located inside the cylindrical position of the material guide barrel, the front and rear screws are driven by a synchronous belt assembly, a support seat is fixedly connected to the top of the base, a drive motor is installed on the support seat, the output shaft of the drive motor is fixedly connected to one of the ends of the screws, a feed hopper located outside the heater is fixedly connected to the top of the material guide barrel, and also includes a ring, a transverse Rod, guide plate, inclined plate, guide hopper, drive assembly and rolling assembly, the rolling assembly is installed between the guide barrel and the screw, and is used for rolling and stirring the raw materials. A circular ring is connected to the inner side of the guide barrel along the circumferential rotation, and cross bars are fixedly connected on the circular ring at even intervals, and guide plates are fixedly connected on the front and rear cross bars at even intervals. The guide plates are staggered, and a guide hopper is fixedly connected to the right side of the guide barrel, and the guide hopper is located between the cross bars. An inclined plate corresponding to the guide hopper is fixedly mounted on the cross bar, and the drive assembly is installed on the guide barrel. The drive assembly is used to drive the cross bar to rotate forward, and the cross bar drives the guide plate and the inclined plate to rotate forward, so that the guide plate shovels the profile raw material for dispersed heating, and the inclined plate shovels the heated profile raw material into the guide hopper.

To further explain, the drive assembly includes an outer gear ring symmetrically fixed between the cross bars, the top of the guide cylinder is connected to a rotating shaft for transverse rotation, a spur gear meshing with the outer gear ring is symmetrically fixed on the rotating shaft, a servo motor is installed on the outer side of the guide cylinder, and the output shaft end of the servo motor is fixedly connected to the end of the rotating shaft.

To further explain, the rolling assembly includes a U-shaped plate fixed to the screw, and a rolling roller is rotatably connected to the U-shaped plate to roll and stir the heated profile raw materials. A guide gear is rotatably connected to the U-shaped plate, and the shaft of the guide gear and the rolling roller are driven by a synchronous belt assembly. An inner gear ring meshing with the guide gear is symmetrically fixed to the inner side of the guide barrel.

To further explain, the rolling roller is composed of a rod and a rolling wheel, wherein the rod is rotatably connected to the U-shaped plate, and the rolling wheel is fixedly sleeved on the rod at even intervals.

Further description, it also includes a breaking up component, which includes a sliding frame that is slidably connected to the feed hopper, and a movable breaking up frame is fixedly connected to the sliding frame to break up the profile raw materials. A connecting spring is connected between the sliding frame and the feed hopper, and a flat orifice plate is fixedly connected between the sliding frames. A reciprocating component is arranged on the support seat to drive the flat orifice plate to move back and forth.

To further illustrate, the disintegration assembly also includes a fixed disintegration frame fixedly connected to the inner side of the feed hopper, and the fixed disintegration frame and the movable disintegration frame are alternately arranged.

Further explanation, the reciprocating assembly includes a rotating rod rotatably connected to the top of the support seat, the rotating rod and one of the screw rods are transmitted through a synchronous belt assembly, a disc is fixedly connected to the end of the rotating rod, a contact rod is fixedly connected to the eccentric position of the disc, and the contact rod is slidably connected to the straight-line orifice plate to drive the straight-line orifice plate to move forward and backward.

According to a further description, the invention also includes an observation window fixedly connected to the feed hopper.

The present invention has the following beneficial effects:

1. The profile raw materials are discharged into the guide barrel through the feed hopper. The screws on the front and rear sides rotate to drive the profile raw materials to move to the left. The guide plate rotates forward to stir the profile raw materials first, so that the profile raw materials are heated more evenly and comprehensively. Then the inclined plate shovels the evenly heated profile raw materials into the guide hopper. The profile raw materials continue to be discharged into the guide barrel and mixed and extruded by the screw. In this way, the profile raw materials can be evenly heated through the guide plate first, thereby improving the effect of mixed molding of profile raw materials.

2. Under the action of the rolling roller, whenever the profile raw material moves to the left for mixed extrusion, the rolling roller can roll the profile raw material after uniform heating, thereby achieving a better effect of mixed extrusion of the profile raw material.

3. Under the action of the movable dispersing frame and the fixed dispersing frame, whenever the profile raw materials are discharged into the feed hopper, the movable dispersing frame and the fixed dispersing frame can cooperate to disperse the profile raw materials. In this way, the profile raw materials can enter the guide barrel more evenly and dispersedly to be mixed and extruded, thereby further improving the effect of mixed extrusion.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of the present invention.

FIG. 2 is a schematic diagram of the three-dimensional structure of the material guide cylinder and the heater of the present invention.

FIG. 3 is a schematic diagram of the three-dimensional structure of the screw and the drive motor of the present invention.

FIG. 4 is a schematic diagram of the three-dimensional structure of the material guide plate, the inclined plate and the driving assembly of the present invention.

FIG. 5 is a schematic diagram of the three-dimensional structure of the cross bar and the guide plate of the present invention.

FIG. 6 is a schematic diagram of the three-dimensional structure of the rolling assembly of the present invention.

FIG. 7 is a schematic diagram of the three-dimensional structure of the inner gear ring and the guide gear of the present invention.

FIG8 is a schematic diagram of the three-dimensional structure of the rolling roller and the inner gear ring of the present invention.

FIG. 9 is a schematic diagram of the three-dimensional structure of the disintegration assembly of the present invention.

FIG. 10 is a schematic diagram of the three-dimensional structure of the movable dismantling frame and the fixed dismantling frame of the present invention.

FIG. 11 is a schematic diagram of the three-dimensional structure of the straight hole plate and the contact rod of the present invention.

FIG. 12 is a schematic diagram of the three-dimensional structure of the observation window of the present invention.

In the figure, 1. base, 2. isolation cover, 3. support seat, 4. guide barrel, 5. feed hopper, 6. heater, 7. screw, 8. drive motor, 9. ring, 10. cross bar, 11. guide plate, 12. inclined plate, 13. guide hopper, 14. rotating shaft, 141. servo motor, 142. spur gear, 143. outer gear ring, 15. U-shaped plate, 151. rolling roller, 152. inner gear ring, 153. guide gear, 16. sliding frame, 161. movable disassembly frame, 162. connecting spring, 163. fixed disassembly frame, 164. slotted hole plate, 165. rotating rod, 166. disc, 167. contact rod, 17. observation window.

DETAILED DESCRIPTION

The principles and features of the present invention are described below in conjunction with Figures 1 to 12. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

A precision twin-screw profile extruder comprises a base 1 and an isolation cover 2 clamped on the top of the base 1, a heater 6 is fixedly connected to the left side of the top of the base 1, the heater 6 is located in the isolation cover 2, a guide barrel 4 is fixedly connected to the inner side of the heater 6 laterally, the right side of the guide barrel 4 is cylindrical, a screw 7 is symmetrically connected to the guide barrel 4 in a front-to-back rotational manner, the right side of the screw 7 is a smooth cylinder, the smooth cylindrical position of the screw 7 is inside the cylindrical position of the guide barrel 4, the right sides of the screw 7 on the front and rear sides are driven by a synchronous belt assembly, a support seat 3 is fixedly connected to the right side of the top of the base 1, a drive motor 8 is installed on the top of the support seat 3, the output shaft of the drive motor 8 is fixedly connected to the right end of the rear screw 7, a feed hopper 5 is fixedly connected to the right side of the top of the guide barrel 4, and the feed hopper 5 is located outside the heater 6. The precision twin-screw profile extruder also includes a circular ring 9, a cross bar 10, a guide plate 11, an inclined plate 12, a guide hopper 13, a driving assembly and a rolling assembly. The rolling assembly is installed between the guide barrel 4 and the screw 7. When the rolling assembly is in operation, the rolling assembly can realize rolling and stirring of the raw materials; a circular ring 9 is connected to the guide barrel 4 in a circumferential rotation, and four cross bars 10 are fixedly connected to the circular ring 9 at even intervals; five guide plates 11 are fixedly connected to the right side of the cross bars 10 on the front and rear sides at even intervals, and the guide plates 11 are staggered. A material guide hopper 13 is fixedly connected to the cylindrical position of the material guide barrel 4, and the material guide hopper 13 is located between the four cross bars 10. The left sides of the four cross bars 10 are fixedly mounted with inclined plates 12, and the inclined plates 12 correspond to the material guide hopper 13; the driving assembly is installed on the material guide barrel 4, and the driving assembly is used to drive the cross bar 10 to rotate forward, and the cross bar 10 drives the material guide plate 11 and the inclined plate 12 to rotate forward, so that the material guide plate 11 shovels the profile raw material for dispersed heating, and the inclined plate 12 shovels the heated profile raw material into the material guide hopper 13.

The driving assembly includes a rotating shaft 14, a servo motor 141, a spur gear 142 and an outer gear ring 143. The outer gear ring 143 is symmetrically fixed between the four cross bars 10. The rotating shaft 14 is connected to the right side of the top of the guide barrel 4 for transverse rotation. The rotating shaft 14 is symmetrically fixed with spur gears 142. The spur gears 142 on the left and right sides are respectively meshed with the outer gear rings 143 on the left and right sides. A servo motor 141 is installed on the upper right side of the outer surface of the guide barrel 4, and the output shaft end of the servo motor 141 is fixedly connected to the right end of the rotating shaft 14.

The rolling assembly includes a U-shaped plate 15, a rolling roller 151, an inner gear ring 152 and a guide gear 153. The U-shaped plate 15 is fixedly connected to the left part of the side where the front and rear screw rods 7 are close to each other. The front and rear U-shaped plates 15 are rotatably connected with the rolling rollers 151. When the rolling rollers 151 rotate and rotate, the rolling rollers 151 can roll and stir the heated profile raw materials. The rolling rollers 151 are composed of a rod and a rolling wheel, wherein the rod is rotatably connected to the U-shaped plate 15, and the rolling wheels are fixedly sleeved on the rod at even intervals. The left sides of the front and rear U-shaped plates 15 are rotatably connected with the guide gears 153, and the shaft of the guide gear 153 and the left side of the rolling roller 151 are driven by a synchronous belt assembly. The inner gear ring 152 is symmetrically fixed to the left side of the guide barrel 4, and the front and rear inner gear rings 152 are respectively meshed with the front and rear guide gears 153.

First, connect the feed hopper 5 to a machine that discharges the profile raw materials, start the heater 6, and the heater 6 heats the guide barrel 4. The isolation cover 2 can cover the heater 6 to prevent the operator from accidentally touching the heater 6 and getting burned; then start the machine to discharge the profile raw materials into the feed hopper 5, and the profile raw materials in the feed hopper 5 fall into the guide barrel 4 and contact the front and rear screws 7, start the drive motor 8 to drive the rear screw 7 to rotate, and the rear screw 7 drives the front screw 7 to rotate through the synchronous belt assembly; the front and rear screws 7 drive the U-shaped plate 15 to rotate, and the U-shaped plate 15 drives the rolling roller 151 and the guide gear 153 to rotate, and the guide gear 153 rotates through the inner gear ring 152 to rotate, and the guide gear 153 is driven by the synchronous belt assembly The transmission of the parts drives the rolling roller 151 to rotate, and the screw rods 7 on the front and rear sides rotate to drive the profile raw material to move to the left for extrusion. The extruded profile raw material first falls into the cylindrical position of the guide barrel 4, and the profile raw material contacts the smooth cylindrical position of the screw rod 7. The heater 6 heats the profile raw material, and the profile raw material contacts the guide plate 11. The servo motor 141 is started to drive the rotating shaft 14 to reverse, and the rotating shaft 14 drives the spur gear 142 to reverse, and the spur gear 142 drives the outer gear ring 143 to rotate forward, and the outer gear ring 143 drives the cross bar 10 to rotate forward; the cross bar 10 drives the guide plate 11 and the inclined plate 12 to rotate forward, and the guide plate 11 rotates forward to stir the profile raw material first, so that the profile raw material is heated more evenly and comprehensively, thereby improving the effect of mixed molding of the profile raw materials. As the profile material is continuously discharged, the profile material after being evenly heated is pushed by the subsequent profile material to move to the left and contact the inclined plate 12. The inclined plate 12 rotates forward to scoop up the profile material. The inclined plate 12 drives the profile material to rotate forward. When the scooped profile material rotates forward to the top of the guide hopper 13, the profile material falls into the guide hopper 13. The guide hopper 13 allows the profile material to be concentrated and discharged to the left into the guide barrel 4 to contact the spiral position of the screw 7 on the front and rear sides. The screw 7 on the front and rear sides rotates to mix the profile material and move the profile material to the left for extrusion. The profile material continues to be heated by the heater 6. When the profile material moves to the left and contacts the rolling roller 151, the rolling roller 151 rotates and rotates to roll the profile material, so that the mixing effect of the profile material is better. The rolled profile material continues to be driven by the screw 7 to move to the left for extrusion. Repeatedly, the profile material can be evenly heated and then transported and extruded, and the extruded profile material can be subsequently processed. After all the profile materials are mixed and extruded, the servo motor 141 and the heater 6 are turned off, the heater 6 stops heating the guide barrel 4, the spur gear 142 stops driving the outer gear ring 143 to rotate forward, the inclined plate 12 and the guide plate 11 also stop rotating forward, and then the drive motor 8 is turned off, the front and rear screws 7 stop rotating, the screw 7 stops driving the rolling roller 151 to rotate through the U-shaped plate 15, and the rolling roller 151 also stops rotating. When the heater 6 needs maintenance, the isolation cover 2 is removed from the base 1 to maintain the heater 6. After the maintenance of the heater 6 is completed, the isolation cover 2 is inserted back into the base 1.

The precision twin-screw profile extruder also includes a breaking up assembly installed between the support seat 3 and the feed hopper 5, and the breaking up assembly includes a sliding frame 16, a movable breaking up frame 161, a connecting spring 162, a fixed breaking up frame 163, a straight-line orifice plate 164 and a reciprocating assembly; two fixed breaking up frames 163 are fixedly connected to the middle part of the inner side of the feed hopper 5, and two sliding frames 16 are slidably connected to the middle part of the feed hopper 5. The two sliding frames 16 and the two fixed breaking up frames 163 are staggered, and the two sliding frames 16 are fixedly connected to the movable breaking up frames 161. When the movable breaking up frames 161 move, the movable breaking up frames 161 can break up the profile raw materials. Two connecting springs 162 are connected between the inner front side surface of the sliding frame 16 and the outer front side surface of the feed hopper 5, and a straight-line orifice plate 164 is fixedly connected between the middle part of the right side surface of the upper and lower sliding frames 16. A reciprocating assembly is provided on the support seat 3. When the reciprocating assembly is in operation, the reciprocating assembly can drive the straight hole plate 164 to move forward and backward. The reciprocating assembly includes a rotating rod 165, a disc 166 and a contact rod 167. The rotating rod 165 is connected to the middle of the top of the support seat 3 for transverse rotation. The right side of the rotating rod 165 and the right side of the front screw 7 are driven by a synchronous belt assembly. The left end of the rotating rod 165 is fixedly connected to the disc 166. The contact rod 167 is fixedly connected to the eccentric position of the left side of the disc 166. The contact rod 167 is slidably connected to the straight hole plate 164. When the contact rod 167 rotates, the contact rod 167 can drive the straight hole plate 164 to move forward and backward.

When the screw rods 7 on both sides of the front and rear rotate, the front screw rod 7 rotates and drives the rotating rod 165 to rotate through the synchronous belt assembly, the rotating rod 165 rotates and drives the disc 166 to rotate, the disc 166 drives the contact rod 167 to rotate, the contact rod 167 drives the straight hole plate 164 to move forward and backward, the straight hole plate 164 drives the sliding frame 16 to move forward and backward, the connecting spring 162 continuously expands and contracts, the sliding frame 16 moves forward and backward and drives the movable disassembling frame 161 to move forward and backward, and then when the profile raw material is discharged into the feed hopper 5, the profile raw material The movable disintegrating frame 161 contacts with the fixed disintegrating frame 163, and the movable disintegrating frame 161 moves forward and backward to cooperate with the fixed disintegrating frame 163 to disintegrate the profile raw materials. The disintegrated profile raw materials continue to fall downward into the guide barrel 4 to be mixed and extruded by the screw 7. When all the profile raw materials are mixed and extruded, the screw 7 stops rotating, the front screw 7 stops driving the rotating rod 165 to rotate, the contact rod 167 stops driving the straight hole plate 164 to move forward and backward, and the sliding frame 16 stops driving the movable disintegrating frame 161 to move forward and backward. In this way, the profile raw materials can enter the guide barrel 4 more evenly and dispersedly to be mixed and extruded, thereby further improving the effect of mixed extrusion.

The precision twin-screw profile extruder also includes an observation window 17, which is fixedly connected to the lower front side of the feed hopper 5. When the profile raw materials are mixed and extruded, the operator can check the dispersion of the profile raw materials in the feed hopper 5 through the observation window 17, so that corresponding processing can be made in time according to the dispersion of the profile raw materials.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a precision double screw profile extruder, including base (1) and joint cage (2) on base (1), base (1) top rigid coupling has heater (6) that are located cage (2), transversely fixed cross-under has guide cylinder (4) on heater (6), guide cylinder (4) right side is cylindrical, symmetrical rotation cross-under has screw rod (7) on guide cylinder (4), screw rod (7) right side is smooth cylindrical, screw rod (7) smooth cylindrical position is in guide cylinder (4) cylindrical position inboard, pass through synchronous belt assembly transmission between front and back both sides screw rod (7), base (1) top rigid coupling has supporting seat (3), install driving motor (8) on supporting seat (3), the output shaft and one of them screw rod (7) tip fixed connection of driving motor (8), guide cylinder (4) top fixed cross-under has feeder hopper (5) that are located outside heater (6), a serial communication port, still including ring (9), swash plate (10), guide plate (11), guide plate (12), guide cylinder (13) and guide cylinder (4) are used for rolling between the material cylinder (4) and are connected to rolling, rolling and are connected to material cylinder (4) circumference between the rolling, the transverse rods (10) are fixedly connected to the circular rings (9) at equal intervals, guide plates (11) are fixedly connected to the transverse rods (10) at equal intervals on the front side and the rear side, the guide plates (11) are arranged in a staggered mode, guide hoppers (13) are fixedly connected to the right sides of the guide cylinders (4), the guide hoppers (13) are arranged between the transverse rods (10), inclined plates (12) corresponding to the guide hoppers (13) are fixedly sleeved on the transverse rods (10), the driving assemblies are arranged on the guide cylinders (4) and are used for driving the transverse rods (10) to rotate positively, the transverse rods (10) drive the guide plates (11) and the inclined plates (12) to enable the guide plates (11) to scoop the section raw materials to be heated in a scattered mode, and the inclined plates (12) scoop the heated section raw materials into the guide hoppers (13);

The rolling assembly comprises a u-shaped plate (15) fixedly connected to the screw (7), a rolling roller (151) is rotatably connected to the u-shaped plate (15) in a penetrating way so as to roll and stir the heated profile raw material, a guide gear (153) is rotatably connected to the u-shaped plate (15), a shaft part of the guide gear (153) is driven by the rolling roller (151) through a synchronous belt assembly, and an inner gear ring (152) meshed with the guide gear (153) is symmetrically fixedly connected to the inner side of the guide cylinder (4);

The device comprises a feeding hopper (5), a scattering assembly, a movable scattering frame (161) and a connecting spring (162), wherein the scattering assembly comprises a sliding frame (16) which is connected onto the feeding hopper (5) in a penetrating way, the sliding frame (16) is fixedly connected with the movable scattering frame (161) so as to scatter profile raw materials, a word hole plate (164) is fixedly connected between the sliding frame (16) and the feeding hopper (5), and a reciprocating assembly is arranged on a supporting seat (3) and used for driving the word hole plate (164) to reciprocate;

the scattering assembly further comprises a fixed scattering frame (163) fixedly connected to the inner side of the feed hopper (5), and the fixed scattering frame (163) and the movable scattering frame (161) are arranged in a staggered manner;

the reciprocating assembly comprises a rotating rod (165) rotationally connected to the top of the supporting seat (3), the rotating rod (165) and one screw rod (7) are driven by the synchronous belt assembly, a disc (166) is fixedly connected to the end part of the rotating rod (165), a contact rod (167) is fixedly connected to the eccentric position of the disc (166), and the contact rod (167) is slidably connected with a word hole plate (164) so as to drive the word hole plate (164) to move forwards and backwards;

the screw rods (7) on the front side and the rear side rotate to drive the profile raw materials to move leftwards to extrude, the extruded profile raw materials firstly fall into the cylindrical position of the guide cylinder (4), the profile raw materials are contacted with the smooth cylindrical position of the screw rods (7), the guide plate (11) positively rotates to stir the profile raw materials, the profile raw materials which are uniformly heated are pushed to move leftwards to contact the inclined plate (12) along with continuous discharging of the profile raw materials, the guide hopper (13) enables the profile raw materials to be intensively discharged leftwards into the guide cylinder (4) to contact with the spiral position of the screw rods (7) on the front side and the rear side, and when the profile raw materials move leftwards to contact with the rolling roller (151), the rolling roller (151) rotates and rotates to roll the profile raw materials.

2. The precise double-screw profile extruder according to claim 1, wherein the driving assembly comprises outer teeth (143) symmetrically fixedly connected between the cross bars (10), the top of the guide cylinder (4) is transversely connected with a rotating shaft (14) in a rotating manner, spur gears (142) meshed with the outer teeth (143) are symmetrically and fixedly sleeved on the rotating shaft (14), a servo motor (141) is mounted on the outer side surface of the guide cylinder (4), and the end part of an output shaft of the servo motor (141) is fixedly connected with the end part of the rotating shaft (14).

3. The precise twin-screw profile extruder according to claim 2, characterized in that the roller (151) consists of a rod and a roller wheel, wherein the rod is rotatably connected to the u-shaped plate (15) in a threaded manner, and the roller wheels are fixedly sleeved on the rod at uniform intervals.

4. A precision twin-screw profile extruder according to claim 3, characterised in that it further comprises a viewing window (17) fixedly connected to the feed hopper (5).