Production device with mixing structure for synthesizing special polyamide

Abstract

The invention belongs to the technical field of extruders, and particularly discloses a special polyamide synthesis production device with a material mixing structure. Comprising a mounting base, a fixing shell is fixedly connected to the mounting base, the fixing shell communicates with a conveying shell, the conveying shell communicates with a mold, a mirroring rotating shaft is rotationally connected into the fixing shell, stirring blocks which are evenly distributed are arranged on the rotating shaft, a supporting shell is fixedly connected to the fixing shell, and a sliding shell is slidably connected into the supporting shell; and the sliding shell is communicated with the fixed shell. Through mutual movement of the supporting shell and the sliding shell, the sliding shell detects the weight of molten polyamide in the sliding shell, the mutual movement distance of the fixing sleeve and the sliding barrel is controlled according to detected data, the weight of injected additives is adjusted, the proportions of the molten polyamide and the additives injected into the sliding shell of different reaction kettles are kept consistent, and the production efficiency is improved. And mixing operation is performed through the stirring block, so that the physical properties of polyamide produced by the device are kept stable.

Description

Technical Field

[0001] The invention belongs to the technical field of extruders, and in particular discloses a production device with a mixing structure for synthesizing special polyamide. Background Art

[0002] Special polyamide is a high-performance engineering plastic with excellent thermal stability, chemical resistance and mechanical properties. It is widely used in industrial fields such as the automotive, electronics and aerospace industries. When synthesizing and producing existing special polyamides, a certain amount of diamines and dibasic acids (or corresponding esters) are often mixed together in a reactor under high temperature and high pressure conditions to form a condensation reaction in a molten state. After that, multiple reactors successively extrude the molten polyamide through a twin-screw extruder after mixing additives to form continuous strips or sheets. After cooling and fixing, the polyamide strips are cut into small particles to obtain the finished special polyamide.

[0003] In the process of synthesizing special polyamide, although the weight of raw materials such as diamine and dibasic acid added to the reactor is the same, the temperature and pressure in the reactor are unstable, which causes the conversion rate of the polycondensation reaction in the reactor to change. At the same time, when the molten polyamide is transferred from the reactor to the twin-screw extruder, part of the molten polyamide will adhere to the reactor or the pipeline, resulting in the inability to accurately judge the total weight of the molten polyamide injected into the twin-screw extruder from different reactors, causing the weight of the additives injected into the twin-screw extruder to be unable to be adjusted, resulting in inconsistent mixing ratios of additives and molten polyamide in the twin-screw extruder, resulting in fluctuations in the strength, hardness, heat resistance and other properties of the finished special polyamide, affecting the consistency of the quality of the final product. Summary of the invention

[0004] Aiming at the disadvantage that the mixing ratio of additives and molten polyamide is inconsistent, the present invention provides a production device with a mixing structure for synthesizing special polyamide.

[0005] The technical scheme of the present invention is: a production device with a mixing structure for special polyamide synthesis, comprising a mounting seat, a fixed motor and a fixed shell are fixedly connected to the mounting seat, a transmission shell is connected to the side of the fixed shell away from the fixed motor, a mold is connected to the side of the transmission shell away from the fixed shell, a mirror image rotating shaft is rotatably connected in the fixed shell, the output shaft of the fixed motor is connected to the mirror image rotating shaft through a transmission box, a mirror image conveying auger and a mirror image barrier auger are arranged on the rotating shaft, a uniformly distributed stirring block is arranged in the middle of the rotating shaft, a supporting shell is fixedly connected to the fixed shell, a material guide pipe is connected to the side wall of the supporting shell, a sliding shell slidably connected to the fixed shell is slidably connected in the supporting shell, the sliding shell is connected to the fixed shell, a tension spring is fixedly connected between the supporting shell and the sliding shell, an injection auger is rotatably connected in the sliding shell, a conveying motor is fixedly connected to the upper side of the supporting shell, the output shaft of the conveying motor is fixedly connected to the injection auger through a telescopic rod, and a liquid injection mechanism for injecting additives therein is arranged on the fixed shell.

[0006] As a preferred embodiment of the present invention, the injection mechanism includes a first piston rod, which is slidably connected to the sliding cylinder, a spring is fixed between the sliding cylinder and the fixed sleeve, an electric push rod is fixed to the upper side of the sliding cylinder, the telescopic end of the electric push rod is fixed to the first piston rod through a mounting plate, the lower side of the sliding cylinder is connected to a liquid guide tube, a one-way valve is arranged in the liquid guide tube, a liquid storage tank connected to the liquid guide tube is fixed to the fixed shell, a through hole is arranged on the lower side of the sliding cylinder, the through hole of the sliding cylinder is connected to a shunt tube connected to the fixed shell, a weight control component for limiting the weight of the additive in the sliding cylinder is arranged on the side wall of the support shell, a flow rate control component for adjusting the flow rate of the additive in the shunt tube is arranged at a position on the fixed shell near the fixed sleeve, and a delay component for assisting the stable discharge of the additive in the sliding cylinder is arranged on the side wall of the support shell.

[0007] As a preferred embodiment of the present invention, the weight control component includes a fixed cylinder, which is fixedly connected to the side wall of the supporting shell, and a second piston rod fixedly connected to the sliding shell is slidably connected in the fixed cylinder, a first guide tube is connected to the upper side of the fixed cylinder, a first hydraulic cylinder connected to the first guide tube is fixedly connected to one side of the sliding cylinder, a pressure sensing sheet extruded and matched with the telescopic end of the first hydraulic cylinder is provided on the upper side of the fixed sleeve, and hydraulic oil is filled in the upper side of the second piston rod in the fixed cylinder, the first guide tube and the first hydraulic cylinder.

[0008] As a preferred embodiment of the present invention, the ratio of the cross-sectional area of ​​the first hydraulic cylinder to the cross-sectional area of ​​the fixed cylinder is equal to the mixing ratio of molten polyamide and additives, and the elastic coefficient of the spring connected to the fixed sleeve is equal to the elastic coefficient of the tension spring connected to the sliding shell, so as to ensure the accurate mixing ratio of molten polyamide and additives.

[0009] As a preferred embodiment of the present invention, the flow rate control assembly includes a second hydraulic cylinder, which is slidably connected to a position on the fixed shell close to the fixed sleeve through a telescopic frame, the second hydraulic cylinder is connected to a second guide tube connected to the lower side of the fixed cylinder, a one-way valve is provided in the through hole of the sliding cylinder, a sliding baffle is fixedly connected to the telescopic end of the second hydraulic cylinder, the sliding baffle is inserted into the through hole of the sliding cylinder, the sliding baffle is matched with the through hole of the sliding cylinder, and hydraulic oil is filled in the lower side of the second piston rod in the fixed cylinder and the second guide tube.

[0010] As a preferred embodiment of the present invention, the delay assembly includes a third hydraulic cylinder, which is fixedly connected to the side wall of the support shell by a mounting plate, and is connected to a third guide tube. The telescopic end of the third hydraulic cylinder is fixedly connected to a sliding plate slidably connected to the fixed cylinder, and a spring is fixedly connected between the sliding plate and the fixed cylinder. The sliding plate is fixedly connected to a connecting plate slidably connected to the fixed cylinder, and through holes are provided on the connecting plate and the sliding plate. The through holes on the connecting plate are connected and matched with the second guide tube, and the through holes on the sliding plate are connected and matched with the first guide tube. A fourth hydraulic cylinder connected to the third guide tube is fixedly connected to the upper side of the sliding cylinder, and the telescopic end of the fourth hydraulic cylinder is extruded and matched with the mounting plate on the first piston rod, and the third guide tube and the fourth hydraulic cylinder are both filled with hydraulic oil.

[0011] As a preferred embodiment of the present invention, it also includes a pressure stabilizing mechanism, which is arranged in the transmission shell, and is used to stabilize the pressure of the polyamide entering the mold. The pressure stabilizing mechanism includes a guide shell, which is slidably connected to the transmission shell, and a through hole connected to the mold is provided on the guide shell. A spring is fixedly connected between the guide shell and the transmission shell, and a connecting hydraulic cylinder is fixedly connected to the side of the transmission shell away from the fixed shell, and the telescopic end of the connecting hydraulic cylinder is inserted into the transmission shell, and the telescopic end of the connecting hydraulic cylinder is fixedly connected to the guide shell. A cavity is provided in the guide shell, and the connecting hydraulic cylinder is connected to a fourth guide tube connected to the cavity in the guide shell, and the fourth guide tube is inserted into the transmission shell. A limit plate that cooperates with the through hole to seal the guide shell is slidably connected to the cavity of the guide shell, and a synchronization component for controlling the synchronous discharge of the upper mold hole is provided in the mold, and the connecting hydraulic cylinder and the fourth guide tube are both filled with hydraulic oil.

[0012] As a preferred embodiment of the present invention, the synchronization component includes a sliding frame, the sliding frame is slidably connected to the mold, the sliding frame is limited and slidably connected to a guide frame, the guide frame is provided with a rectangular hole that is connected and cooperates with the sliding frame, the guide frame is fixedly connected to a connecting rod that is slidably connected to the mold on the side away from the transmission shell, the sliding frame is provided with a groove, the upper side of the mold is slidably connected to a limit frame that is limited and cooperates with the groove on the sliding frame, a spring is fixedly connected between the limit frame and the mold, the mold is provided with an exhaust valve, and the limit frame is fixedly connected to a detection block inserted into the mold.

[0013] As a preferred embodiment of the present invention, a slope is provided on one side of the groove on the sliding frame close to the detection block, and the height of the slope is less than the depth of the groove on the sliding frame.

[0014] As a preferred embodiment of the present invention, the upper part of the connecting rod is inclined, and the relative length of the inclined part of the connecting rod on the horizontal plane is equal to the distance between the guide frame and the mold hole, so that the rectangular hole of the guide frame fits with the mold hole after the guide frame moves.

[0015] The present invention has at least the following beneficial effects: 1. The present invention enables the sliding shell to detect the weight of the molten polyamide inside the sliding shell through the mutual movement of the supporting shell and the sliding shell, controls the mutual movement distance of the fixed sleeve and the sliding cylinder according to the detected data, adjusts the weight of the injected additive, makes the ratio of the molten polyamide and the additive injected into the sliding shell by different reactors consistent, and performs mixing operation through the stirring block, so that the physical properties of the polyamide produced by the device remain stable.

[0016] 2. The present invention changes the size of the communicating area between the sliding cylinder and the diverter pipe by moving the sliding baffle in the flow rate control assembly, controls the time of injecting the additive into the fixed shell, and enables different positions of the molten polyamide to be evenly mixed with the same amount of additive.

[0017] 3. The present invention changes the size of the connecting area between the through hole on the guide shell and the mold by moving the limit plate in the pressure stabilizing mechanism, so that the through hole on the guide shell transports the molten polyamide with stable pressure into the mold, allowing the mold to complete the uniform speed extrusion operation of the polyamide strip under stable pressure, so that the weight of each position of the polyamide strip is evenly distributed.

[0018] 4. The present invention moves the limiting sliding frame of the limiting frame in the synchronization component, so that after the molten polyamide to be extruded fills the mold, the mold hole of the mold is opened for extrusion operation, and then the multiple mold holes on the mold extrude polyamide strips at the same time, which is convenient for guiding the multiple polyamide strips at the same time and reducing the difficulty of subsequent cooling and pelletizing of the polyamide strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the parts at the fixed shell and the rotating shaft of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the parts of the transmission shell and the stirring block of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the parts of the support shell and the material guide pipe of the present invention; Figure 5 It is a cross-sectional view of the parts of the support shell and the sliding shell of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the parts of the liquid guide tube and the liquid storage tank of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the parts of the electric push rod and the fourth hydraulic cylinder of the present invention; Figure 8 It is a cross-sectional view of the parts of the fixed sleeve and the sliding cylinder of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the parts of the third hydraulic cylinder and the sliding plate of the present invention; Fig.10 It is a three-dimensional structural schematic diagram of the guide housing and the parts connected to the hydraulic cylinder of the present invention; Fig.11 It is a three-dimensional structural schematic diagram of the parts of the guide frame and the connecting rod of the present invention; Fig.12 It is a three-dimensional structural schematic diagram of the parts at the limit frame and the detection block of the present invention.

[0020] In the above figures: 1-mounting seat, 2-fixed motor, 3-fixed shell, 4-transmission shell, 5-mold, 6-rotating shaft, 7-stirring block, 8-support shell, 9-material guide pipe, 10-sliding shell, 11-injection auger, 201-fixed sleeve, 202-sliding cylinder, 203-first piston rod, 204-electric push rod, 205-liquid guide pipe, 206-liquid storage tank, 207-diverter pipe, 301-fixed cylinder, 302-second piston rod, 303-first guide pipe, 304- The first hydraulic cylinder, 305-conveying motor, 401-the second hydraulic cylinder, 402-the second guide tube, 403-the sliding baffle, 501-the third hydraulic cylinder, 502-the third guide tube, 503-the sliding plate, 504-the connecting plate, 505-the fourth hydraulic cylinder, 601-the guide shell, 602-the connecting hydraulic cylinder, 603-the fourth guide tube, 604-the limiting plate, 701-the sliding frame, 702-the guide frame, 703-the connecting rod, 704-the limiting frame, 705-the detection block. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-Figure 12, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] Example 1: During the synthesis of special polyamide, the same weight of raw materials such as diamine and dibasic acid is added to the reactor each time. During the process of transferring the molten polyamide from the reactor to the twin-screw extruder, part of the molten polyamide will adhere to the reactor or the pipeline, resulting in the inability to accurately judge the total weight of the molten polyamide injected into the twin-screw extruder from different reactors, making it impossible to accurately adjust the weight of the additive injected into the twin-screw extruder, resulting in an inconsistent mixing ratio of the additive and the molten polyamide in the twin-screw extruder, affecting the consistency of the quality of the finished special polyamide.

[0023] A production device with a mixing structure for special polyamide synthesis, please refer to Figure 1-Figure 5As shown, it includes a mounting base 1, on which a control panel is arranged, a fixed motor 2 and a fixed shell 3 are fixedly connected to the mounting base 1, the fixed motor 2 is located on the right side of the fixed shell 3, the internal cross-section of the fixed shell 3 is in the shape of a gourd, the left side of the fixed shell 3 is connected with a transmission shell 4, the left side of the transmission shell 4 is connected with a mold 5, two rotating shafts 6 with front and rear mirror images are rotatably connected in the fixed shell 3, the output shaft of the fixed motor 2 is connected to the two rotating shafts 6 through a transmission box, the two rotating shafts 6 rotate clockwise (from right to left) synchronously, and two conveying augers with left and right mirror images and two barrier augers with left and right mirror images are arranged on the rotating shaft 6, the conveying augers and the barrier augers are both existing structures, and the pitch of the conveying augers is greater than that of the barrier augers. The pitch of the screw is shown in FIG. 1 , and the two barrier augers are located between the two conveying augers. The two rotating shafts 6 rotate in the same direction to convey the molten polyamide to the left in the fixed shell 3 through the conveying augers and the barrier augers thereon. A plurality of stirring blocks 7 are evenly distributed in the middle of the rotating shaft 6. The plurality of stirring blocks 7 are located between the two barrier augers on the same rotating shaft 6. There is an angular deviation between the plurality of stirring blocks 7, which are used to stir and mix the molten polyamide and the additive. A supporting shell 8 and a fixed sleeve 201 are fixedly connected to the fixed shell 3. The fixed sleeve 201 is located in the middle of the fixed shell 3. The fixed sleeve 201 is located on the right side of the stirring block 7. The supporting shell 8 is located on the right side of the fixed shell 3. A sliding cylinder 202 is slidably connected in the fixed sleeve 201. The sliding cylinder 202 is connected to the fixed sleeve 201. 01 is fixedly connected with a spring, a material guide pipe 9 is connected to the side wall of the support shell 8, a feed port is arranged on the right side of the fixed shell 3, the material guide pipe 9 is externally connected to a reactor, a sliding shell 10 is slidably connected inside the support shell 8, the sliding shell 10 is slidably connected to the feed port of the fixed shell 3, the sliding shell 10 is connected to the feed port of the fixed shell 3, a solenoid valve (the solenoid valve is an existing part, and the internal structure is not shown in the attached drawings) is arranged at the lower end of the sliding shell 10, which is used to temporarily block the lower side of the sliding shell 10 so that the sliding shell 10 can complete the detection of the weight of the molten polyamide injected into a single reactor, a tension spring is fixedly connected between the support shell 8 and the sliding shell 10, an injection auger 11 is rotatably connected inside the sliding shell 10, and the injection auger 11 is located between the sliding shell 10 and At the connection point of the fixed shell 3, a conveying motor 305 is fixedly connected to the upper side of the supporting shell 8, and the output shaft of the conveying motor 305 penetrates the supporting shell 8. The output shaft of the conveying motor 305 is fixedly connected to the injection auger 11 through a telescopic rod. The fixed shell 3 is provided with an injection mechanism for injecting additives therein. The conveying motor 305, the injection mechanism and the fixed motor 2 are all electrically connected to the control panel. The sliding shell 10 in the supporting shell 8 moves to achieve the purpose of detecting the weight of the molten polyamide injected into the sliding shell 10 by a single reactor, so as to facilitate the subsequent adaptive change of the total amount of additives injected into the fixed shell 3, so that the ratio of molten polyamide and additives of different weights are kept consistent, thereby ensuring the overall stable performance of the polyamide produced by the device.

[0024] Please refer to Figure 1 , Figure 2 and Figure 6-Figure 8 As shown, the injection mechanism includes a first piston rod 203, the first piston rod 203 is slidably connected in the sliding cylinder 202, an electric push rod 204 is fixedly connected to the upper side of the sliding cylinder 202, the telescopic end of the electric push rod 204 is fixedly connected to the first piston rod 203 through a mounting plate, and a pressure sensing sheet is arranged between the telescopic end of the electric push rod 204 and the mounting plate, which is used to make the telescopic end of the electric push rod 204 maintain a set tension to drive the first piston rod 203 to move downward, and the sliding cylinder 202 The lower side of the slide cylinder 202 is connected with a liquid guide tube 205, a liquid storage tank 206 is fixedly connected to the fixed shell 3, the liquid storage tank 206 is connected with the liquid guide tube 205, both the liquid guide tube 205 and the liquid storage tank 206 are filled with additives, a one-way valve is arranged in the liquid guide tube 205, the one-way valve only allows the additive in the liquid guide tube 205 to flow into the slide cylinder 202, the lower side of the slide cylinder 202 is provided with a through hole, the through hole of the slide cylinder 202 is connected with a shunt tube 207, and the shunt tube 207 is connected with the fixed shell 3, The first piston rod 203 in the sliding cylinder 202 moves up and down to achieve the purpose of extracting the additive in the liquid storage tank 206 and injecting it into the fixed shell 3. The shunt tube 207 is a multi-way tube. The upper side of the shunt tube 207 is a pipe opening, and the lower side of the shunt tube 207 is four pipe openings equidistantly distributed front and back. The total spacing of the four pipe openings is smaller than the width of the inner cross-section of the fixed shell 3, so that the additive injected into the fixed shell 3 by the shunt tube 207 is in uniform contact with the molten polyamide, which is convenient for the stirring block 7 to quickly complete the mixing of the additive and the molten polyamide. A weight control component for limiting the weight of the additive in the sliding cylinder 202 is arranged on the side wall of the support shell 8, and a flow rate control component for adjusting the flow rate of the additive in the shunt tube 207 is arranged near the fixed sleeve 201 on the fixed shell 3. A delay component for assisting the stable discharge of the additive in the sliding cylinder 202 is arranged on the side wall of the support shell 8. The weight control component and the electric push rod 204 are both electrically connected to the control panel.

[0025] Please refer to Figure 2 , Figure 4 and Figure 6-Figure 9As shown, the weight control component includes a fixed cylinder 301, the fixed cylinder 301 is fixedly connected to the side wall of the support shell 8, a second piston rod 302 is slidably connected in the fixed cylinder 301, the second piston rod 302 is fixedly connected to the sliding shell 10, the upper side of the fixed cylinder 301 is connected to the first guide pipe 303, the right side of the sliding cylinder 202 is fixedly connected to the first hydraulic cylinder 304, the first hydraulic cylinder 304 is connected to the first guide pipe 303, a pressure sensing sheet is arranged on the upper side of the fixed sleeve 201, the pressure sensing sheet on the upper side of the fixed sleeve 201 is pressed and matched with the telescopic end of the first hydraulic cylinder 304, so as to determine whether the weight of the additive in the sliding cylinder 202 reaches the set value, and the first hydraulic cylinder 3 04 and the ratio of the cross-sectional area inside the fixed cylinder 301 is equal to the mixing ratio of the molten polyamide and the additive. The elastic coefficient of the spring connected to the fixed sleeve 201 is equal to the elastic coefficient of the tension spring connected to the sliding shell 10, which is used to ensure the accurate mixing ratio of the molten polyamide and the additive. The upper side of the second piston rod 302 in the fixed cylinder 301, the first guide tube 303 and the first hydraulic cylinder 304 are all filled with hydraulic oil. According to the distance that the second piston rod 302 moves with the sliding shell 10, the extension length of the telescopic end of the first hydraulic cylinder 304 is adaptively changed to limit the maximum weight of the additive entering the sliding cylinder 202, so that each batch of molten polyamide is mixed with the additive in equal proportion.

[0026] Please refer to Figure 2 , Figure 4 and Figure 6-Figure 9 As shown, the flow rate control assembly includes a second hydraulic cylinder 401, which is slidably connected to a position on the fixed shell 3 near the fixed sleeve 201 through a telescopic frame, and the second hydraulic cylinder 401 is connected to a second guide tube 402, and the second guide tube 402 is connected to the lower side of the fixed cylinder 301. A one-way valve is arranged in the through hole of the sliding cylinder 202, which is used to make the additive in the sliding cylinder 202 only enter the diverter tube 207 to prevent the molten polyamide from flowing back into the diverter tube 207. The telescopic end of the second hydraulic cylinder 401 is fixedly connected to a sliding baffle 403, and the sliding baffle 403 is inserted into the through hole of the sliding cylinder 202. The sliding baffle The plate 403 cooperates with the through-hole sealing of the sliding cylinder 202 to change the flow area of ​​the additive in the shunt pipe 207. The lower side of the second piston rod 302 in the fixed cylinder 301 and the second guide pipe 402 are filled with hydraulic oil. The sliding baffle 403 moves to change the communication area between the sliding cylinder 202 and the shunt pipe 207, thereby controlling the flow rate of the additive entering the fixed shell 3. The injection auger 11 injects the molten polyamide into the fixed shell 3 at a uniform speed, so that different batches of molten polyamide with different weights can evenly contact the additive at different positions during the transportation process, thereby ensuring the consistency of the quality of the polyamide strips at different positions.

[0027] Please refer to Figure 2 , Figure 4 and Figure 6-Figure 9As shown, the delay component includes a third hydraulic cylinder 501, which is fixed to the side wall of the support shell 8 by a mounting plate, and the third hydraulic cylinder 501 is connected to a third guide tube 502, and a sliding plate 503 is fixed to the telescopic end of the third hydraulic cylinder 501, and a spring is fixed between the sliding plate 503 and the fixed cylinder 301, and the spring is initially in a compressed state, and the sliding plate 503 is slidably connected to the fixed cylinder 301, and a connecting plate 504 is fixed to the lower side of the sliding plate 503, and the connecting plate 504 is slidably connected to the fixed cylinder 301, and through holes are provided on the connecting plate 504 and the sliding plate 503, and the through holes on the connecting plate 504 are connected and matched with the second guide tube 402, and the through holes of the sliding connecting plate 504 are initially connected with the second guide tube 402 In the open state, the through hole on the sliding plate 503 is connected and matched with the first guide tube 303. Initially, the through hole of the sliding plate 503 and the first guide tube 303 are in a connected state. The fourth hydraulic cylinder 505 is fixedly connected to the upper side of the sliding cylinder 202. The fourth hydraulic cylinder 505 is connected to the third guide tube 502. The telescopic end of the fourth hydraulic cylinder 505 is squeezed and matched with the mounting plate on the first piston rod 203. The third guide tube 502 and the fourth hydraulic cylinder 505 are both filled with hydraulic oil. According to the situation that the telescopic end of the first piston rod 203 and the fourth hydraulic cylinder 505 are not in contact, during the process of the sliding cylinder 202 injecting additives into the fixed shell 3, the first guide tube 303 and the second guide tube 402 are blocked to ensure the accuracy of the flow rate and total amount of the additives entering the fixed shell 3.

[0028] When using the device for the synthesis and production of special polyamide, the operator first starts the fixed motor 2 through the control panel. The output shaft of the fixed motor 2 drives the two rotating shafts 6 in the fixed shell 3 to rotate clockwise (from right to left) through the transmission box. Then the reactor injects the molten polyamide (subsequently described as material instead of molten polyamide) into the support shell 8 through the material guide pipe 9. Since the solenoid valve at the bottom of the sliding shell 10 is in a closed state, the material is finally accumulated in the sliding shell 10. When all the material enters the sliding shell 10, the control panel starts the electric push rod 204.

[0029] In the process of the material entering the sliding shell 10, the weight of the sliding shell 10 gradually increases, the sliding shell 10 moves downward, the sliding shell 10 stretches the tension spring connected to it, and the sliding shell 10 drives the second piston rod 302 to move downward synchronously. The second piston rod 302 in the fixed cylinder 301 moves downward, and the hydraulic oil in the first hydraulic cylinder 304 flows into the upper side of the second piston rod 302 in the fixed cylinder 301 through the through holes on the first guide pipe 303 and the sliding plate 503. The telescopic end of the first hydraulic cylinder 304 extends out, and the hydraulic oil on the lower side of the second piston rod 302 in the fixed cylinder 301 passes through the connecting plate The through hole on 504 and the second guide tube 402 flow into the second hydraulic cylinder 401, the telescopic end of the second hydraulic cylinder 401 extends, and the telescopic end of the second hydraulic cylinder 401 drives the sliding baffle 403 to move into the through hole on the lower side of the sliding cylinder 202, and the connecting area between the sliding cylinder 202 and the diverter tube 207 is reduced. When all the materials enter the sliding shell 10, the sliding shell 10 stops moving. According to the relative sliding distance between the sliding shell 10 and the guide tube 9, the purpose of real-time detection of the weight of the material in the sliding shell 10 is achieved, which is convenient for the subsequent adaptive change of the amount of additive injected into the fixed shell 3.

[0030] When the electric push rod 204 is started, the telescopic end of the electric push rod 204 drives the first piston rod 203 to move upward, and the additive in the liquid storage tank 206 enters the sliding cylinder 202 through the liquid guide tube 205 and the one-way valve. As the additive in the sliding cylinder 202 increases, the sliding cylinder 202 moves downward and compresses the connected spring. The sliding cylinder 202 drives the first hydraulic cylinder 304 and the parts thereon to move downward synchronously. The distance between the telescopic end of the first hydraulic cylinder 304 and the pressure sensing plate on the fixed sleeve 201 gradually decreases, and the sliding cylinder 202 drives the second hydraulic cylinder 304 through the sliding baffle 403. Cylinders 401 move synchronously, and the increased weight of the hydraulic oil in the second hydraulic cylinder 401 is the same as the reduced weight of the hydraulic oil in the first hydraulic cylinder 304, and will not interfere with the distance moved by the sliding cylinder 202 according to the weight of the additive therein. In the process of the first hydraulic cylinder 304 moving with the sliding cylinder 202, when the telescopic end of the first hydraulic cylinder 304 contacts and squeezes the pressure sensing sheet on the fixed sleeve 201, it indicates that the weight of the additive in the sliding cylinder 202 matches the weight of the material in the sliding shell 10. At this time, the control panel turns off the electric push rod 204, and the sliding cylinder 202 stops moving.

[0031] During the upward movement of the first piston rod 203, the first piston rod 203 releases the squeezing of the telescopic end of the fourth hydraulic cylinder 505, and the sliding plate 503 drives the connecting plate 504 to move upward under the elastic force of the connected spring, and the sliding plate 503 blocks the first guide tube 303, and the connecting plate 504 blocks the second guide tube 402. The hydraulic oil in the first guide tube 303 and the second guide tube 402 cannot flow, and the telescopic ends of the first hydraulic cylinder 304 and the second hydraulic cylinder 401 are locked, so as to prevent the first hydraulic cylinder 304 from The telescopic end moves when it is squeezed with the pressure sensing plate, which affects the accuracy of the total amount of additive in the sliding cylinder 202. When the sliding plate 503 moves upward, the sliding plate 503 squeezes the telescopic end of the third hydraulic cylinder 501, and the telescopic end of the third hydraulic cylinder 501 is retracted. The hydraulic oil in the fourth hydraulic cylinder 505 flows into the third hydraulic cylinder 501 through the third guide pipe 502, and the telescopic end of the fourth hydraulic cylinder 505 extends. When the electric push rod 204 stops, the control panel starts the conveying motor 305 and the solenoid valve on the lower side of the sliding shell 10.

[0032] When the conveying motor 305 is started, the solenoid valve on the lower side of the sliding shell 10 is opened synchronously, and the output shaft of the conveying motor 305 drives the injection auger 11 to rotate through the telescopic rod. The injection auger 11 stably transports the material in the sliding shell 10 to the fixed shell 3 through rotation, and the two rotating shafts 6 transport the material to the left in the fixed shell 3 through the right conveying auger thereon. When the material in the fixed shell 3 moves to the right barrier auger, the control panel starts the electric push rod 204, and the telescopic end of the electric push rod 204 drives the first piston rod 203 to move downward. The pressure of the pressure sensing piece on the telescopic end of the electric push rod 204 is set according to the connecting area of ​​the through hole on the lower side of the sliding cylinder 202 blocked by the sliding baffle 403. In the process of the telescopic end of the electric push rod 204 driving the first piston rod 203 to move, the pressure detected by the pressure sensing piece on the telescopic end of the electric push rod 204 is kept constant, so that the moving speed of the first piston rod 203 is adaptively changed, and the additive is injected from the through hole at the lower end of the sliding cylinder 202 The additive is discharged at a uniform speed, and then the additive is injected into the fixed shell 3 through the shunt pipe 207. The additive and the material are synchronously transported to the left by the right barrier auger in the fixed shell 3. The two rotating shafts 6 drive the several stirring blocks 7 thereon to rotate continuously. The several stirring blocks 7 stir and mix the additive and the material transported by the right barrier auger. The barrier augers on both sides of the several stirring blocks 7 extend the stirring and mixing time of the several stirring blocks 7 for the additive and the material, thereby ensuring the uniformity of the mixing of the additive and the material. By moving the sliding baffle 403, the connecting area between the sliding cylinder 202 and the shunt pipe 207 is changed, and the flow rate of the additive injected into the fixed shell 3 by the shunt pipe 207 is controlled, so that when the material transportation in the fixed shell 3 is completed, the additive in the sliding cylinder 202 is just completely injected. At this time, the control panel stops the electric push rod 204, and the first piston rod 203 returns to its initial position, thereby ensuring that all parts of the material are evenly mixed with the additive, thereby improving the consistency of the quality of polyamide produced by the device.

[0033] When the stirring blocks 7 have finished mixing the materials and additives, the barrier auger on the left and the conveying auger convey the mixed materials into the mold 5 through the transmission shell 4, and the materials are extruded through the mold holes on the mold 5 to form a plurality of long strips. After that, the polyamide strips are cut into small particles after being cooled and fixed to obtain the finished special polyamide. In the process of the first piston rod 203 moving downward to restore the initial position, before the first piston rod 203 is about to restore the initial position, the first piston rod 203 contacts and squeezes the fourth hydraulic cylinder 505, and the telescopic end of the fourth hydraulic cylinder 505 is retracted, and the hydraulic oil in the third guide tube 502 performs the above-mentioned reverse flow, and the telescopic end of the third hydraulic cylinder 501 drives the sliding plate 503 and the connecting plate 504 to move downward to restore the initial position, and the through hole of the sliding plate 503 is connected with the first guide tube 303 again, and the through hole of the connecting plate 504 is connected with the second guide tube 402 again. A piston rod 203 returns to its initial position, and the sliding shell 10 moves upward and resets under the tension of the connected tension spring. The sliding shell 10 drives the second piston rod 302 to move upward and return to its initial position. The hydraulic oil in the first guide tube 303 and the second guide tube 402 flows in the reverse direction as mentioned above. The telescopic end of the second hydraulic cylinder 401 drives the sliding baffle 403 to move and return to its initial position. The telescopic end of the first hydraulic cylinder 304 is retracted. The additive in the sliding cylinder 202 is continuously reduced. The sliding cylinder 202 moves upward and returns to its initial position under the elastic force of the connected spring. When the electric push rod 204 stops, the conveying motor 305 stops synchronously. At this point, all parts return to their initial positions. When another reactor injects the material into the sliding shell 10, the above operation is repeated. When the device is used up, the fixed motor 2 is turned off through the control panel, and the residual polyamide in the device is cleaned up.

[0034] Example 2: During the operation of the existing special polyamide synthesis production device, after the material and additives in the twin-screw extruder are mixed, the conveying distribution of the material in the twin-screw extruder will become uneven. When the material is extruded at the die, the amount of material per unit time at the die of the twin-screw extruder constantly changes, resulting in a constant change in the pressure of the polyamide strips extruded from the die, making the mass distribution of the extruded polyamide strips uneven, resulting in some polyamide being unusable, causing varying degrees of waste and increasing the production cost of polyamide.

[0035] Based on Example 1, please refer to Fig.10 and Fig.11As shown, it also includes a pressure stabilizing mechanism, which is arranged in the transmission shell 4, and the inner cross-section of the transmission shell 4 is circular. The pressure stabilizing mechanism is used to stabilize the pressure of the polyamide entering the mold 5. The pressure stabilizing mechanism includes a guide shell 601, which is slidably connected to the transmission shell 4, and a through hole is arranged on the guide shell 601, and the through hole of the guide shell 601 is connected to the mold 5. A spring is fixedly connected between the guide shell 601 and the transmission shell 4, and the connected spring is compressed by moving the guide shell 601 to detect the pressure of the molten polyamide on the right side of the guide shell 601 in the transmission shell 4. A connecting hydraulic cylinder 602 is fixedly connected to the left side of the transmission shell 4, and the telescopic end of the connecting hydraulic cylinder 602 is inserted into the transmission shell 4, and the telescopic end of the connecting hydraulic cylinder 602 is fixedly connected to the guide shell 601. A cavity is arranged in the guide shell 601, and the connecting hydraulic cylinder 602 is connected to a fourth guide pipe 603, and the fourth guide pipe 603 is connected to the guide shell 60 1 is connected to the inner cavity of the guide shell 601, the fourth guide pipe 603 is inserted into the transmission shell 4, and the limit plate 604 is slidably connected in the cavity of the guide shell 601. The limit plate 604 is composed of a cylinder and a square plate. The cylindrical part of the limit plate 604 slides and seals with the guide shell 601, and the limit plate 604 is matched with the through hole of the guide shell 601 to block the through hole. The movement of the limit plate 604 is controlled according to the moving distance of the guide shell 601 to change the area of ​​the through hole of the guide shell 601, so that when the amount of molten polyamide in the guide shell 601 entering the transmission shell 4 changes, the through hole of the guide shell 601 still transports the polyamide into the mold 5 through a stable pressure, so that the speed of extruding the polyamide strip from the mold hole of the mold 5 remains unchanged, ensuring that the weight distribution at different positions on the extruded polyamide strip is uniform. A synchronization component for controlling the synchronous discharge of the upper mold hole is provided in the mold 5, and the hydraulic cylinder 602 and the fourth guide pipe 603 are both filled with hydraulic oil.

[0036] Please refer to Figure 10-12As shown, the synchronization component includes a sliding frame 701, the sliding frame 701 is slidably connected to the mold 5, and a guide frame 702 is limitedly slidably connected in the sliding frame 701. A rectangular hole is provided on the guide frame 702, and the rectangular hole on the guide frame 702 is connected and matched with the sliding frame 701. Initially, the rectangular hole on the guide frame 702 is misaligned with the sliding frame 701, and the sliding frame 701 is in a blocked state. A connecting rod 703 is fixedly connected to the left side of the guide frame 702, and the connecting rod 703 is slidably connected to the mold 5. The upper part of the rod 703 is inclined rightward from top to bottom, and the relative length of the inclined part of the connecting rod 703 on the horizontal plane is equal to the distance between the guide frame 702 and the mold hole of the mold 5, so that when the connecting rod 703 drives the guide frame 702 to move upward, the sliding frame 701 moves to the left synchronously, and finally after the guide frame 702 moves, its rectangular hole is aligned with the mold hole, and the rectangular hole of the guide frame 702 is connected with the sliding frame 701, so that the polyamide is limited to pass through the rectangular holes of the sliding frame 701 and the guide frame 702 from The die hole of the mold 5 is extruded, and a groove is provided on the sliding frame 701. The upper side of the mold 5 is slidably connected to the limit frame 704, and the limit frame 704 is limitedly matched with the groove on the sliding frame 701. The right side of the groove on the sliding frame 701 is provided with an inclined surface, which is inclined to the left from top to bottom, and the height of the inclined surface is less than the depth of the groove on the sliding frame 701. A spring is fixedly connected between the limit frame 704 and the mold 5, and an exhaust valve is provided on the mold 5 (the exhaust valve is an existing device and its internal structure is not shown in the attached drawings). ), the limit frame 704 is fixedly connected with a detection block 705, and the detection block 705 is inserted into the mold 5. The detection block 705 always keeps in contact with the mold 5 during the movement. The limit frame 704 limits the sliding frame 701, so that the rectangular hole of the guide frame 702 is connected with the sliding frame 701 only when the mold 5 is filled with polyamide, so that multiple mold holes on the mold 5 in the device initially extrude polyamide strips synchronously, which is convenient for guiding multiple polyamide strips at the same time and reducing the difficulty of subsequent cooling and pelletizing of the polyamide strips.

[0037] The above-mentioned material extrusion operation is repeated. When the left conveying auger on the two rotating shafts 6 gradually injects the material into the transmission shell 4, the material accumulation on the right side of the guide shell 601 in the transmission shell 4 increases, and the material enters the mold 5 through the through hole in the middle of the guide shell 601. The guide shell 601 moves to the left under the extrusion of the material. The guide shell 601 moves to the left to retract the telescopic end of the connecting hydraulic cylinder 602. The hydraulic oil in the connecting hydraulic cylinder 602 flows into the cavity of the guide shell 601 through the fourth guide pipe 603. The hydraulic oil entering the cavity of the guide shell 601 pushes the cylindrical part of the limit plate 604 upward, and then the guide shell 6 01 The limit plate 604 in the cavity moves upward, and the limit plate 604 blocks part of the through hole of the guide shell 601. When the amount of material entering the transmission shell 4 increases, the guide shell 601 moves to the left, and the limit plate 604 moves upward. The connection area between the through hole of the guide shell 601 and the mold 5 decreases. Similarly, when the amount of material entering the transmission shell 4 decreases, the connection area between the through hole of the guide shell 601 and the mold 5 increases. By moving the limit plate 604 up and down, the size of the connection area between the through hole of the guide shell 601 and the mold 5 is controlled to ensure the stability of the pressure of the material entering the mold 5, so that the quality distribution of polyamide produced by this device is uniform at different positions.

[0038] When the material in the transmission shell 4 enters the mold 5 through the through hole of the guide shell 601, the guide frame 702 blocks the sliding frame 701, the limiting frame 704 limits the sliding frame 701, and the sliding frame 701 cannot move. The material accumulates on the right side of the sliding frame 701 in the mold 5, and the gas in the mold 5 is discharged from the device through the exhaust valve on the detection block 705. When the gas on the right side of the sliding frame 701 in the mold 5 is completely discharged, the material in the mold 5 squeezes the detection block 705, and the detection block 705 drives the limiting frame 704 to move upward. The limiting frame 704 compresses the connected spring, and the limiting frame 704 releases the limit on the sliding frame 701. The material squeezes and pushes the sliding frame 701 to move to the left. The sliding frame 701 drives the guide frame 702 and the connecting rod 703 to move synchronously. The upper inclined part of the connecting rod 703 slides with the mold 5, and the connecting rod 703 drives the guide frame 702 relative to the sliding Frame 701 moves upward, and when the sliding frame 701 is connected with the rectangular hole of the guide frame 702, the guide frame 702 is aligned with several mold holes on the mold 5, and the sliding frame 701 stops moving. After the material passes through the rectangular holes of the sliding frame 701 and the guide frame 702, it is extruded from several mold holes on the mold 5 at the same time, avoiding the situation where multiple polyamide strips are extruded one after another at the beginning, which increases the difficulty of guiding the polyamide strips later. After using this device, the residual polyamide in this device is cleaned up, and the limit frame 704 moves downward and resets under the elastic force of the connected spring. The limit frame 704 squeezes the inclined surface of the groove of the sliding frame 701, and the sliding frame 701 moves and resets. The upper inclined part of the connecting rod 703 slides with the mold 5. The connecting rod 703 drives the guide frame 702 to move downward and reset, and the sliding frame 701 resumes the blocked state. At this point, all parts are restored to their initial states.

[0039] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A production device with a mixing structure for synthesizing special polyamide, comprising a mounting seat (1), a fixed motor (2) and a fixed shell (3) being fixedly connected to the mounting seat (1), a side of the fixed shell (3) away from the fixed motor (2) being connected to a transmission shell (4), a side of the transmission shell (4) away from the fixed shell (3) being connected to a mold (5), a mirror-image rotating shaft (6) being rotatably connected in the fixed shell (3), an output shaft of the fixed motor (2) being connected to the mirror-image rotating shaft (6) through a transmission box, a mirror-image conveying auger and a mirror-image barrier auger being arranged on the rotating shaft (6), and a uniformly distributed stirring block (7) being arranged in the middle of the rotating shaft (6), wherein: The invention also comprises a support shell (8), wherein the support shell (8) is fixedly connected to the fixed shell (3), a fixed sleeve (201) is fixedly connected to the fixed shell (3), a sliding cylinder (202) is slidably connected in the fixed sleeve (201), a side wall of the support shell (8) is connected to a material guide pipe (9), a feed port is provided on the fixed shell (3), a sliding shell (10) slidably connected to the feed port of the fixed shell (3) is slidably connected in the support shell (8), the sliding shell (10) is connected to the feed port of the fixed shell (3), a tension spring is fixedly connected between the support shell (8) and the sliding shell (10), an injection auger (11) is rotatably connected in the sliding shell (10), a conveying motor (305) is fixedly connected to the upper side of the support shell (8), an output shaft of the conveying motor (305) is fixedly connected to the injection auger (11) via a telescopic rod, and a liquid injection mechanism for injecting additives therein is provided on the fixed shell (3).

2. The production device with a mixing structure for synthesizing special polyamide according to claim 1, characterized in that: The injection mechanism comprises a first piston rod (203), the first piston rod (203) being slidably connected in the sliding cylinder (202), a spring being fixedly connected between the sliding cylinder (202) and the fixed sleeve (201), an electric push rod (204) being fixedly connected to the upper side of the sliding cylinder (202), a telescopic end of the electric push rod (204) being fixedly connected to the first piston rod (203) via a mounting plate, a liquid guide tube (205) being connected to the lower side of the sliding cylinder (202), a one-way valve being arranged in the liquid guide tube (205), and a valve connected to the liquid guide tube (205) being fixedly connected to the fixed shell (3). The liquid storage tank (206) is provided with a through hole on the lower side of the sliding cylinder (202), the through hole of the sliding cylinder (202) is connected to a shunt pipe (207) connected to the fixed shell (3), a weight control component for limiting the weight of the additive in the sliding cylinder (202) is provided on the side wall of the support shell (8), a flow rate control component for adjusting the flow of the additive in the shunt pipe (207) is provided on the position of the fixed shell (3) near the fixed sleeve (201), and a delay component for assisting the stable discharge of the additive in the sliding cylinder (202) is provided on the side wall of the support shell (8).

3. The production device with a mixing structure for synthesizing special polyamide according to claim 2, characterized in that: The weight control component comprises a fixed cylinder (301), the fixed cylinder (301) being fixedly connected to the side wall of the support shell (8), a second piston rod (302) fixedly connected to the sliding shell (10) being slidably connected in the fixed cylinder (301), a first guide tube (303) being communicated with at the upper side of the fixed cylinder (301), a first hydraulic cylinder (304) being communicated with at one side of the sliding cylinder (202), a pressure sensing sheet being extruded and matched with the telescopic end of the first hydraulic cylinder (304) being arranged at the upper side of the fixed sleeve (201), and hydraulic oil being filled in at the upper side of the second piston rod (302) in the fixed cylinder (301), the first guide tube (303) and the first hydraulic cylinder (304).

4. The production device with a mixing structure for synthesizing special polyamide according to claim 3, characterized in that: The ratio of the inner cross-sectional area of ​​the first hydraulic cylinder (304) to the inner cross-sectional area of ​​the fixed cylinder (301) is equal to the mixing ratio of the molten polyamide and the additive, and the elastic coefficient of the spring connected to the fixed sleeve (201) is equal to the elastic coefficient of the tension spring connected to the sliding shell (10), so as to ensure that the mixing ratio of the molten polyamide and the additive is accurate.

5. The production device with a mixing structure for synthesizing special polyamide according to claim 3, characterized in that: The flow rate control assembly comprises a second hydraulic cylinder (401), the second hydraulic cylinder (401) being slidably connected to a position on the fixed shell (3) close to the fixed sleeve (201) through a telescopic frame, the second hydraulic cylinder (401) being connected to a second flow guide tube (402) connected to the lower side of the fixed cylinder (301), a one-way valve being arranged in the through hole of the sliding cylinder (202), a sliding baffle (403) being fixedly connected to the telescopic end of the second hydraulic cylinder (401), the sliding baffle (403) being inserted into the through hole of the sliding cylinder (202), the sliding baffle (403) being matched to block the through hole of the sliding cylinder (202), and hydraulic oil being filled in the lower side of the second piston rod (302) in the fixed cylinder (301) and the second flow guide tube (402).

6. The production device with a mixing structure for synthesizing special polyamide according to claim 5, characterized in that: The time delay assembly comprises a third hydraulic cylinder (501), the third hydraulic cylinder (501) being fixedly connected to the side wall of the support shell (8) by means of a mounting plate, the third hydraulic cylinder (501) being connected to a third flow guide pipe (502), the telescopic end of the third hydraulic cylinder (501) being fixedly connected to a sliding plate (503) slidably connected to the fixed cylinder (301), a spring being fixedly connected between the sliding plate (503) and the fixed cylinder (301), the sliding plate (503) being fixedly connected to a connecting plate (504) slidably connected to the fixed cylinder (301), the connecting plate (504) being fixedly connected to the fixed cylinder (301), and the connecting plate (504) being fixedly connected to the fixed cylinder (301). 04) and the sliding plate (503) are both provided with through holes, the through hole on the connecting plate (504) is in communication with and cooperates with the second guide tube (402), the through hole on the sliding plate (503) is in communication with and cooperates with the first guide tube (303), a fourth hydraulic cylinder (505) in communication with the third guide tube (502) is fixedly connected to the upper side of the sliding cylinder (202), the telescopic end of the fourth hydraulic cylinder (505) is extruded and cooperated with the mounting plate on the first piston rod (203), and hydraulic oil is filled in the third guide tube (502) and the fourth hydraulic cylinder (505).

7. The production device with a mixing structure for synthesizing special polyamide according to claim 5, characterized in that: The invention also comprises a pressure stabilizing mechanism, the pressure stabilizing mechanism being arranged in the transmission shell (4), the pressure stabilizing mechanism being used to stabilize the pressure of the polyamide entering the mold (5), the pressure stabilizing mechanism comprising a guide shell (601), the guide shell (601) being slidably connected in the transmission shell (4), the guide shell (601) being provided with a through hole communicating with the mold (5), a spring being fixedly connected between the guide shell (601) and the transmission shell (4), a connecting hydraulic cylinder (602) being fixedly connected to a side of the transmission shell (4) away from the fixed shell (3), the telescopic end of the connecting hydraulic cylinder (602) being inserted into the transmission shell (4), and the connecting hydraulic cylinder (602) being inserted into the transmission shell (4). The guide shell (601) is provided with a cavity in the guide shell (601), the connecting hydraulic cylinder (602) is connected to a fourth guide tube (603) connected to the cavity in the guide shell (601), the fourth guide tube (603) is inserted into the transmission shell (4), the cavity of the guide shell (601) is slidably connected to a limit plate (604) for sealing the through hole thereof, the mold (5) is provided with a synchronization component for controlling the synchronous discharge of the upper mold hole thereof, and the connecting hydraulic cylinder (602) and the fourth guide tube (603) are both filled with hydraulic oil.

8. The production device with a mixing structure for synthesizing special polyamide according to claim 7, characterized in that: The synchronization component comprises a sliding frame (701), the sliding frame (701) is slidably connected to the mold (5), a guide frame (702) is slidably connected to the sliding frame (701), a rectangular hole communicating with the sliding frame (701) is provided on the guide frame (702), a connecting rod (703) slidably connected to the mold (5) is fixedly connected to the side of the guide frame (702) away from the transmission shell (4), the sliding frame (701) is provided with a groove, the upper side of the mold (5) is slidably connected to a limit frame (704) that is limitedly matched with the groove on the sliding frame (701), a spring is fixedly connected between the limit frame (704) and the mold (5), the mold (5) is provided with an exhaust valve, and the limit frame (704) is fixedly connected to a detection block (705) inserted into the mold (5).

9. The production device with a mixing structure for synthesizing special polyamide according to claim 8, characterized in that: A slope is provided on one side of the groove on the sliding frame (701) close to the detection block (705), and the height of the slope is less than the depth of the groove on the sliding frame (701).

10. The production device with a mixing structure for synthesizing special polyamide according to claim 8, characterized in that: The upper part of the connecting rod (703) is in an inclined state, and the relative length of the inclined part of the connecting rod (703) on the horizontal plane is equal to the distance between the guide frame (702) and the die hole of the die (5), so that the rectangular hole of the guide frame (702) and the die hole are aligned after the guide frame (702) moves.

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