A production device with a mixing structure for synthesizing a special polyamide

Abstract

The present invention belongs to the technical field of extruders, and particularly discloses a production device with a mixing structure for synthesizing special polyamides. It includes a mounting base, on which a fixed shell is fixedly connected. The fixed shell is communicated with a transmission shell, and the transmission shell is communicated with a mold. A pair of mirror-image rotating shafts are rotatably connected in the fixed shell, and the rotating shafts are provided with evenly distributed stirring blocks. A support shell is fixedly connected to the fixed shell, and a sliding shell is slidably connected in the support shell, and the sliding shell is communicated with the fixed shell. By the mutual movement of the support shell and the sliding shell, the weight of the molten polyamide in the sliding shell is detected, and according to the detected data, the distance of the mutual movement of the fixed sleeve and the sliding cylinder is controlled to adjust the injection weight of the additive, so that the proportion of the molten polyamide and the additive injected into the sliding shell in different reaction kettles remains consistent, and the mixing operation is carried out by the stirring blocks, so that the physical properties of the polyamide produced by this device are stable.

Description

Technical Field

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

[0002] Special polyamides are high-performance engineering plastics with excellent thermal stability, chemical resistance, and mechanical properties, and are widely used in industrial fields such as the automotive, electronics, and aerospace industries. When synthesizing existing special polyamides, a certain amount of diamine and dicarboxylic acid (or corresponding esters) are often mixed together in a reaction kettle under high temperature and high pressure conditions to become a molten state for polycondensation reaction. Then, multiple reaction kettles sequentially extrude the molten polyamide through a twin-screw extruder after mixing additives, forming continuous strips or sheets. The polyamide strips are cooled and fixed and then cut into small particles to obtain the finished special polyamide.

[0003] During the synthesis of special polyamides, although the weights of raw materials such as diamine and dicarboxylic acid added to the reaction kettle are the same, due to the instability of the temperature and pressure in the reaction kettle, the conversion rate of the polycondensation reaction in the reaction kettle changes. At the same time, during the transfer of the molten polyamide from the reaction kettle to the twin-screw extruder, some of the molten polyamide will adhere to the reaction kettle or pipeline, resulting in the inability to accurately judge the total weight of the molten polyamide injected into the twin-screw extruder from different reaction kettles, making it impossible to adjust the weight of the additives injected into the twin-screw extruder. As a result, the mixing ratio of the additives and the molten polyamide in the twin-screw extruder is inconsistent, leading to fluctuations in the properties such as strength, hardness, and heat resistance of the finished special polyamide, affecting the consistency of the final product quality. Summary of the Invention

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

[0005] The technical solution of the present invention is: a production device with a mixing structure for synthesizing special polyamides, including a mounting base, on which a fixed motor and a fixed housing are fixedly connected. One side of the fixed housing away from the fixed motor is communicated with a transmission housing, and one side of the transmission housing away from the fixed housing is communicated with a mold. In the fixed housing, a pair of mirror-image rotating shafts are rotatably connected, and the output shaft of the fixed motor is connected to the pair of mirror-image rotating shafts through a transmission box. On the rotating shafts, a pair of mirror-image conveying augers and a pair of mirror-image barrier augers are arranged. In the middle of the rotating shafts, evenly distributed stirring blocks are provided. A support housing is fixedly connected to the fixed housing, and a feed pipe is communicated with the side wall of the support housing. In the support housing, a sliding housing that is slidably connected to the fixed housing is slidably connected. The sliding housing is communicated with the fixed housing, and a tension spring is fixedly connected between the support housing and the sliding housing. In the sliding housing, a feeding auger is rotatably connected. On the upper side of the support housing, a conveying motor is fixedly connected, and the output shaft of the conveying motor is fixedly connected to the feeding auger through a telescopic rod. A liquid injection mechanism for injecting additives into the fixed housing is provided on the fixed housing.

[0006] As a preference of the present invention, the liquid injection mechanism includes a first piston rod that is slidably connected in a sliding cylinder. A spring is fixedly connected between the sliding cylinder and a fixed sleeve. An electric push rod is fixedly connected to the upper side of the sliding cylinder, and the telescopic end of the electric push rod is fixedly connected to the first piston rod through a mounting plate. The lower side of the sliding cylinder is communicated with a liquid guide pipe, and a one-way valve is arranged in the liquid guide pipe. A liquid storage tank communicated with the liquid guide pipe is fixedly connected to the fixed housing. A through hole is provided on the lower side of the sliding cylinder, and a shunt pipe communicated with the fixed housing is communicated with the through hole of the sliding cylinder. A weight control component for limiting the weight of the additives in the sliding cylinder is arranged on the side wall of the support housing. A flow rate control component for adjusting the flow rate of the additives in the shunt pipe is arranged at a position on the fixed housing close to the fixed sleeve. A delay component for assisting the stable discharge of the additives in the sliding cylinder is arranged on the side wall of the support housing.

[0007] As a preference of the present invention, the weight control component includes a fixed cylinder that is fixedly connected to the side wall of the support housing. In the fixed cylinder, a second piston rod fixedly connected to the sliding housing is slidably connected. The upper side of the fixed cylinder is communicated with a first diversion pipe. On one side of the sliding cylinder, a first hydraulic cylinder communicated with the first diversion pipe is fixedly connected. A pressure sensing piece that is extrusion-fitted with the telescopic end of the first hydraulic cylinder is arranged on the upper side of the fixed sleeve. Hydraulic oil is filled in the upper side of the second piston rod in the fixed cylinder, the first diversion pipe, and the first hydraulic cylinder.

[0008] Preferably, in the present invention, the ratio of the inner cross-sectional area of the first hydraulic cylinder to the inner cross-sectional area of the fixed cylinder 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 is equal to the elastic coefficient of the tension spring connected to the sliding shell, so as to ensure the accurate mixing ratio of the molten polyamide and the additive.

[0009] Preferably, in the present invention, the flow rate control assembly includes a second hydraulic cylinder. The second hydraulic cylinder is slidably connected to the fixed shell near the fixed sleeve through a telescopic frame. The second hydraulic cylinder is communicated with a second diversion pipe communicated with the lower side of the fixed cylinder. A one-way valve is arranged in the through hole of the sliding cylinder. The telescopic end of the second hydraulic cylinder is fixedly connected with a sliding baffle. The sliding baffle is inserted into the through hole of the sliding cylinder. The sliding baffle is in sealing cooperation with the through hole of the sliding cylinder. Hydraulic oil is filled in both the lower side of the second piston rod in the fixed cylinder and the second diversion pipe.

[0010] Preferably, in the present invention, the delay assembly includes a third hydraulic cylinder. The third hydraulic cylinder is fixedly connected to the side wall of the support shell by using a mounting plate. The third hydraulic cylinder is communicated with a third diversion pipe. The telescopic end of the third hydraulic cylinder is fixedly connected with a sliding plate slidably connected to the fixed cylinder. A spring is fixedly connected between the sliding plate and the fixed cylinder. The sliding plate is fixedly connected with a connecting plate slidably connected to the fixed cylinder. Through holes are arranged on both the connecting plate and the sliding plate. The through hole on the connecting plate is in communication and cooperation with the second diversion pipe. The through hole on the sliding plate is in communication and cooperation with the first diversion pipe. A fourth hydraulic cylinder communicated with the third diversion pipe is fixedly connected to the upper side of the sliding cylinder. The telescopic end of the fourth hydraulic cylinder is in pressing cooperation with the mounting plate on the first piston rod. Hydraulic oil is filled in both the third diversion pipe and the fourth hydraulic cylinder.

[0011] Preferably, in the present invention, a pressure stabilizing mechanism is further included. The pressure stabilizing mechanism is arranged in the transmission shell. The pressure stabilizing mechanism is used for stabilizing the pressure of the polyamide entering the mold. The pressure stabilizing mechanism includes a guiding shell. The guiding shell is slidably connected in the transmission shell. A through hole communicated with the mold is arranged on the guiding shell. A spring is fixedly connected between the guiding shell and the transmission shell. A connecting hydraulic cylinder is fixedly connected to the side of the transmission shell away from the fixed shell. The telescopic end of the connecting hydraulic cylinder is inserted into the transmission shell. The telescopic end of the connecting hydraulic cylinder is fixedly connected with the guiding shell. A cavity is arranged in the guiding shell. The connecting hydraulic cylinder is communicated with a fourth diversion pipe communicated with the cavity in the guiding shell. The fourth diversion pipe is inserted into the transmission shell. A limiting plate in sealing cooperation with its through hole is slidably connected in the cavity of the guiding shell. A synchronous assembly for controlling the synchronous discharging of the upper die holes on the mold is arranged in the mold. Hydraulic oil is filled in both the connecting hydraulic cylinder and the fourth diversion pipe.

[0012] Preferably, as for the present invention, the synchronization component includes a sliding frame which is slidably connected to the mold. A guiding frame is slidably and limitedly connected inside the sliding frame. A rectangular hole which is in communication and cooperation with the sliding frame is arranged on the guiding frame. A connecting rod which is slidably connected to the mold is fixedly connected to the side of the guiding frame away from the transmission shell. A groove is arranged on the sliding frame. A limiting frame which is slidably connected to the upper side of the mold and is in limiting cooperation with the groove on the sliding frame is arranged. A spring is fixedly connected between the limiting frame and the mold. An exhaust valve is arranged on the mold. A detection block which is inserted into the mold is fixedly connected to the limiting frame.

[0013] Preferably, as for the present invention, a slope is arranged on the 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] Preferably, as for the present invention, the upper part of the connecting rod is in an inclined state, and the relative length of the inclined part of the connecting rod on the horizontal plane is equal to the distance between the guiding frame and the die hole of the mold, so that after the guiding frame moves, its rectangular hole is aligned and fitted with the die hole.

[0015] The present invention has at least the following beneficial effects: 1. Through the mutual movement of the support shell and the sliding shell, the present invention detects the weight of the molten polyamide in the sliding shell, controls the moving distance between the fixed sleeve and the sliding cylinder according to the detected data, adjusts the injected weight of the additive, makes the proportion of the molten polyamide and the additive injected into the sliding shell in different reaction kettles keep consistent, and performs the mixing operation through the stirring block, so that the physical properties of the polyamide produced by the device are kept stable.

[0016] 2. By moving the sliding baffle in the flow rate control component, the present invention changes the size of the communication area between the sliding cylinder and the shunt pipe, controls the injection time of the additive into the fixed shell, and enables the molten polyamide at different positions to be uniformly mixed with an equal amount of additive.

[0017] 3. By moving the limiting plate in the pressure stabilizing mechanism, the present invention changes the size of the communication area between the through hole on the guiding shell and the mold, and further enables the molten polyamide with stable pressure to be transported into the mold through the through hole on the guiding shell, so that the mold completes the uniform extrusion operation of the polyamide strip under stable pressure, and the weight of each position of the polyamide strip is evenly distributed.

[0018] 4. By limiting the movement of the sliding frame through the limiting frame in the synchronization component, after the molten polyamide to be extruded fills the mold, the die hole of the mold is opened for extrusion operation, and then the polyamide strips are extruded simultaneously through multiple die holes on the mold, which is convenient for guiding multiple polyamide strips simultaneously and reduces the difficulty of subsequent cooling and pelletizing of the polyamide strips. Description of the Drawings

[0019] Figure 1Schematic three-dimensional structure diagram of the present invention;

[0020] Figure 2 Schematic three-dimensional structure diagram of the parts at the fixed shell and the rotating shaft of the present invention;

[0021] Figure 3 Schematic three-dimensional structure diagram of the parts at the transmission shell and the stirring block of the present invention;

[0022] Figure 4 Schematic three-dimensional structure diagram of the parts at the support shell and the material guide pipe of the present invention;

[0023] Figure 5 Cross-sectional view of the parts at the support shell and the sliding shell of the present invention;

[0024] Figure 6 Schematic three-dimensional structure diagram of the parts at the liquid guide pipe and the liquid storage tank of the present invention;

[0025] Figure 7 Schematic three-dimensional structure diagram of the parts at the electric push rod and the fourth hydraulic cylinder of the present invention;

[0026] Figure 8 Cross-sectional view of the parts at the fixed sleeve and the sliding cylinder of the present invention;

[0027] Figure 9 Schematic three-dimensional structure diagram of the parts at the third hydraulic cylinder and the sliding plate of the present invention;

[0028] Figure 10 Schematic three-dimensional structure diagram of the parts at the guide shell and the connecting hydraulic cylinder of the present invention;

[0029] Figure 11 Schematic three-dimensional structure diagram of the parts at the guide frame and the connecting rod of the present invention;

[0030] Figure 12 Schematic three-dimensional structure diagram of the parts at the limit frame and the detection block of the present invention.

[0031] In the above drawings: 1 - mounting base, 2 - fixed motor, 3 - fixed housing, 4 - transmission housing, 5 - mold, 6 - rotating shaft, 7 - stirring block, 8 - support housing, 9 - material guiding pipe, 10 - sliding housing, 11 - injection auger, 201 - fixed sleeve, 202 - sliding cylinder, 203 - first piston rod, 204 - electric push rod, 205 - liquid guiding pipe, 206 - liquid storage tank, 207 - shunt pipe, 301 - fixed cylinder, 302 - second piston rod, 303 - first diversion pipe, 304 - first hydraulic cylinder, 305 - conveying motor, 401 - second hydraulic cylinder, 402 - second diversion pipe, 403 - sliding baffle, 501 - third hydraulic cylinder, 502 - third diversion pipe, 503 - sliding plate, 504 - connecting plate, 505 - fourth hydraulic cylinder, 601 - guiding housing, 602 - connecting hydraulic cylinder, 603 - fourth diversion pipe, 604 - limiting plate, 701 - sliding frame, 702 - guiding frame, 703 - connecting rod, 704 - limiting bracket, 705 - detection block. Detailed implementation mode

[0032] The following combines the attached Figures 1-12 figures to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

[0033] Embodiment 1: During the synthesis of special polyamide, the same weight of raw materials such as diamine and dibasic acid are added to the reaction kettle each time. However, during the transfer of the molten polyamide from the reaction kettle to the twin-screw extruder, some of the molten polyamide will adhere to the reaction kettle or pipeline, resulting in the inability to accurately judge the total weight of the molten polyamide injected into the twin-screw extruder from different reaction kettles. As a result, the weight of the additive injected into the twin-screw extruder cannot be accurately adjusted, causing the mixing ratio of the additive and the molten polyamide in the twin-screw extruder to be inconsistent, which affects the consistency of the quality of the special polyamide finished product.

[0034] A production device with a mixing structure for synthesizing special polyamide, please refer to Figures 1-5As shown in the figure, it includes a mounting base 1, on which a control panel is provided. A fixed motor 2 and a fixed housing 3 are fixedly connected to the mounting base 1. The fixed motor 2 is located on the right side of the fixed housing 3. The inner cross-section of the fixed housing 3 is in the shape of a gourd. The left side of the fixed housing 3 is communicated with a transmission housing 4, and the left side of the transmission housing 4 is communicated with a mold 5. Two rotation shafts 6 that are front-back mirror images are rotatably connected in the fixed housing 3. The output shaft of the fixed motor 2 is connected to the two rotation shafts 6 through a transmission box. The two rotation shafts 6 rotate clockwise synchronously (viewed from right to left). On the rotation shafts 6, there are two conveying augers and two barrier augers that are left-right mirror images. The conveying augers and the barrier augers are both existing structures. The pitch of the conveying auger is greater than the pitch of the barrier auger. The two barrier augers are located between the two conveying augers. The two rotation shafts 6 rotate in the same direction, and through the conveying augers and the barrier augers on them, the molten polyamide is conveyed to the left in the fixed housing 3. In the middle of the rotation shaft 6, there are a number of stirring blocks 7 evenly distributed. The number of stirring blocks 7 is located between the two barrier augers on the same rotation shaft 6. There is an angular deviation between the number of stirring blocks 7, which is used to stir and mix the molten polyamide and the additive. A support housing 8 and a fixed sleeve 201 are fixedly connected to the fixed housing 3. The fixed sleeve 201 is located in the middle of the fixed housing 3 and on the right side of the stirring blocks 7. The support housing 8 is located on the right side of the fixed housing 3. A sliding cylinder 202 is slidably connected in the fixed sleeve 201. A spring is fixedly connected between the sliding cylinder 202 and the fixed sleeve 201. A guide pipe 9 is communicated with the side wall of the support housing 8. There is a feed port on the right side of the fixed housing 3. The guide pipe 9 is externally connected to a reaction kettle. A sliding housing 10 is slidably connected in the support housing 8. The sliding housing 10 is slidably connected to the feed port of the fixed housing 3 and is communicated with the feed port of the fixed housing 3. The lowermost end of the sliding housing 10 is provided with an electromagnetic valve (the electromagnetic valve is an existing part, and the internal structure is not shown in the drawing), which is used to temporarily block the lower side of the sliding housing 10, so that the sliding housing 10 can complete the detection of the weight of the molten polyamide injected into a single reaction kettle. A tension spring is fixedly connected between the support housing 8 and the sliding housing 10. A filling auger 11 is rotatably connected in the sliding housing 10. The filling auger 11 is located at the connection between the sliding housing 10 and the fixed housing 3. A conveying motor 305 is fixedly connected to the upper side of the support housing 8. The output shaft of the conveying motor 305 penetrates the support housing 8. The output shaft of the conveying motor 305 is fixedly connected to the filling auger 11 through a telescopic rod. A liquid injection mechanism for injecting an additive into the fixed housing 3 is provided on the fixed housing 3. The conveying motor 305, the liquid injection mechanism, and the fixed motor 2 are all electrically connected to the control panel. By moving the sliding housing 10 in the support housing 8, the purpose of detecting the weight of the molten polyamide injected into a single reaction kettle in the sliding housing 10 is achieved, which is convenient for subsequently adaptively changing the total amount of the additive injected into the fixed housing 3, so that the ratio of the molten polyamide and the additive with different weights is kept consistent, ensuring the stable overall performance of the polyamide produced by this device.

[0035] Please refer to Figure 1 、 Figure 2 andFigures 6-8 As shown, the liquid injection mechanism includes a first piston rod 203. The first piston rod 203 is slidably connected within a 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. A pressure sensing sheet is arranged between the telescopic end of the electric push rod 204 and the mounting plate, which is used to keep the telescopic end of the electric push rod 204 at a set pulling force to drive the first piston rod 203 to move downward. A liquid guide pipe 205 is communicated with the lower side of the sliding cylinder 202. A liquid storage tank 206 is fixedly connected to the fixed shell 3. The liquid storage tank 206 is communicated with the liquid guide pipe 205. Additives are filled in both the liquid guide pipe 205 and the liquid storage tank 206. A one-way valve is arranged in the liquid guide pipe 205, and this one-way valve only allows the additives in the liquid guide pipe 205 to flow into the sliding cylinder 202. A through hole is arranged on the lower side of the sliding cylinder 202. The through hole of the sliding cylinder 202 is communicated with a shunt pipe 207. The shunt pipe 207 is communicated with the fixed shell 3. By moving the first piston rod 203 up and down within the sliding cylinder 202, the purpose of extracting the additives in the liquid storage tank 206 and injecting them into the fixed shell 3 is achieved. The shunt pipe 207 is a multi-way pipe. The upper side of the shunt pipe 207 is one pipe orifice, and the lower side of the shunt pipe 207 is four pipe orifices evenly distributed front and back. The total distance between the four pipe orifices is less than the width of the inner cross-section of the fixed shell 3, so that the additives injected into the fixed shell 3 by the shunt pipe 207 are in uniform contact with the molten polyamide, which is convenient for the stirring block 7 to quickly complete the mixing of the additives and the molten polyamide. A weight control component for limiting the weight of the additives in the sliding cylinder 202 is arranged on the side wall of the support shell 8. A flow rate control component for adjusting the flow rate of the additives in the shunt pipe 207 is arranged on the fixed shell 3 near the fixed sleeve 201. A delay component for assisting the stable discharge of the additives 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.

[0036] Please refer to Figure 2 、 Figure 4 and Figures 6-9As shown in the figure, the weight control component includes a fixed cylinder 301, which is fixedly connected to the side wall of the support shell 8. A second piston rod 302 is slidably connected inside the fixed cylinder 301. The second piston rod 302 is fixedly connected to the sliding shell 10. A first diversion pipe 303 communicates with the upper side of the fixed cylinder 301. A first hydraulic cylinder 304 is fixedly connected to the right side of the sliding cylinder 202. The first hydraulic cylinder 304 communicates with the first diversion 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 in pressing fit with the telescopic end of the first hydraulic cylinder 304 to achieve the purpose of determining whether the weight of the additive in the sliding cylinder 202 reaches the set value. The ratio of the cross-sectional area inside the first hydraulic cylinder 304 to 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. Hydraulic oil is filled in the upper side of the second piston rod 302 inside the fixed cylinder 301, the first diversion pipe 303, and the first hydraulic cylinder 304. According to the distance that the second piston rod 302 moves along with the sliding shell 10, the extending length of the telescopic end of the first hydraulic cylinder 304 is adaptively changed to limit the maximum value of the weight of the additive entering the sliding cylinder 202, so that each batch of molten polyamide is mixed with the additive in an equal ratio.

[0037] Please refer to Figure 2 、 Figure 4 and Figures 6-9 As shown in the figure, the flow rate control component includes a second hydraulic cylinder 401. The second hydraulic cylinder 401 is slidably connected to the position close to the fixed sleeve 201 on the fixed shell 3 through a telescopic frame. The second hydraulic cylinder 401 communicates with a second diversion pipe 402. The second diversion pipe 402 communicates with the lower side of the fixed cylinder 301. A one-way valve is arranged in the through hole of the sliding cylinder 202 to allow the additive in the sliding cylinder 202 to only enter the shunt pipe 207 and prevent the molten polyamide from flowing back into the shunt pipe 207. The telescopic end of the second hydraulic cylinder 401 is fixedly connected to a sliding baffle 403. The sliding baffle 403 is inserted into the through hole of the sliding cylinder 202. The sliding baffle 403 is in sealing cooperation with the through hole of the sliding cylinder 202 to change the flow area of the additive in the shunt pipe 207. Hydraulic oil is filled in the lower side of the second piston rod 302 inside the fixed cylinder 301 and the second diversion pipe 402. By moving the sliding baffle 403, the communication area between the sliding cylinder 202 and the shunt pipe 207 is changed to control the flow rate of the additive entering the fixed shell 3. The feeding auger 11 uniformly injects the molten polyamide into the fixed shell 3, so that different batches of molten polyamide with different weights can uniformly contact the additive at different positions during the conveying process, ensuring the consistency of the quality of different positions of the contacted polyamide strips.

[0038] Please refer to Figure 2 、 Figure 4 and Figures 6-9As shown in the figure, the delay component includes a third hydraulic cylinder 501. The third hydraulic cylinder 501 is fixedly connected to the side wall of the support shell 8 by means of a mounting plate. The third hydraulic cylinder 501 is connected to a third diversion pipe 502. The telescopic end of the third hydraulic cylinder 501 is fixedly connected to a sliding plate 503. A spring is fixedly connected between the sliding plate 503 and the fixed cylinder 301. This spring is in a compressed state initially. The sliding plate 503 is slidably connected to the fixed cylinder 301. A connecting plate 504 is fixedly connected to the lower side of the sliding plate 503. The connecting plate 504 is slidably connected to the fixed cylinder 301. Through holes are provided on both the connecting plate 504 and the sliding plate 503. The through hole on the connecting plate 504 is in communication and cooperation with the second diversion pipe 402. Initially, the through hole of the connecting plate 504 is in a communicating state with the second diversion pipe 402. The through hole on the sliding plate 503 is in communication and cooperation with the first diversion pipe 303. Initially, the through hole of the sliding plate 503 is in a communicating state with the first diversion pipe 303. A 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 diversion pipe 502. The telescopic end of the fourth hydraulic cylinder 505 is in pressing cooperation with the mounting plate on the first piston rod 203. Hydraulic oil is filled in both the third diversion pipe 502 and the fourth hydraulic cylinder 505. According to the situation that the first piston rod 203 is not in contact with the telescopic end of the fourth hydraulic cylinder 505, during the process of the sliding cylinder 202 injecting additives into the fixed shell 3, the first diversion pipe 303 and the second diversion pipe 402 are blocked to ensure the accuracy of the flow rate and total amount of the additives entering the fixed shell 3.

[0039] When using this device for the synthesis 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 (viewed from right to left) through the transmission box. Subsequently, the reaction kettle injects the molten polyamide (subsequently described with materials instead of the molten polyamide) into the support shell 8 through the feed pipe 9. Since the electromagnetic valve at the bottom of the sliding shell 10 is in the closed state, the materials finally accumulate in the sliding shell 10. When all the materials enter the sliding shell 10, the control panel starts the electric push rod 204.

[0040] During the process of the material entering the sliding shell 10, the weight of the sliding shell 10 gradually increases, and the sliding shell 10 moves downward. The sliding shell 10 stretches the pull spring connected thereto, 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. 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 first diversion pipe 303 and the through holes on the sliding plate 503. The telescopic end of the first hydraulic cylinder 304 extends. The hydraulic oil on the lower side of the second piston rod 302 in the fixed cylinder 301 flows into the second hydraulic cylinder 401 through the through holes on the connecting plate 504 and the second diversion pipe 402. The telescopic end of the second hydraulic cylinder 401 extends. 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 communication area between the sliding cylinder 202 and the diversion pipe 207 decreases. After 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 material guiding pipe 9, the purpose of real-time detecting the weight of the materials in the sliding shell 10 is achieved, which is convenient for adaptively changing the amount of additives injected into the fixed shell 3 subsequently.

[0041] After 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. The additive in the liquid storage tank 206 enters the sliding cylinder 202 through the liquid guiding pipe 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 its upper parts to move downward synchronously. The distance between the telescopic end of the first hydraulic cylinder 304 and the pressure sensing piece on the fixed sleeve 201 gradually decreases. The sliding cylinder 202 drives the second hydraulic cylinder 401 to move synchronously through the sliding baffle 403. The increased weight of the hydraulic oil in the second hydraulic cylinder 401 is the same as the decreased weight of the hydraulic oil in the first hydraulic cylinder 304, and it will not interfere with the moving distance of the sliding cylinder 202 according to the weight of the additive therein. During 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 presses the pressure sensing piece on the fixed sleeve 201, it indicates that the weight of the additive in the sliding cylinder 202 matches the weight of the materials in the sliding shell 10. At this time, the control panel closes the electric push rod 204, and the sliding cylinder 202 stops moving.

[0042] During the upward movement of the first piston rod 203, the first piston rod 203 releases the extrusion on the telescopic end of the fourth hydraulic cylinder 505. The sliding plate 503 drives the connecting plate 504 to move upward under the elastic force of the connected spring. The sliding plate 503 blocks the first diversion pipe 303, and the connecting plate 504 blocks the second diversion pipe 402. The hydraulic oil in the first diversion pipe 303 and the second diversion pipe 402 cannot flow, and the telescopic ends of the first hydraulic cylinder 304 and the second hydraulic cylinder 401 are locked, preventing the telescopic end of the first hydraulic cylinder 304 from moving when squeezing the pressure sensing piece, which affects the accuracy of the total amount of additives 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 retracts. The hydraulic oil in the fourth hydraulic cylinder 505 flows into the third hydraulic cylinder 501 through the third diversion 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 housing 10.

[0043] When the conveying motor 305 is started, the solenoid valve on the lower side of the sliding housing 10 is opened synchronously. The output shaft of the conveying motor 305 drives the feeding auger 11 to rotate through the telescopic rod. The feeding auger 11 stably conveys the materials in the sliding housing 10 into the fixed housing 3 by rotation. The two rotating shafts 6 convey the materials to the left in the fixed housing 3 through the conveying auger on their right sides. When the materials in the fixed housing 3 move to the right barrier auger, the control panel starts the electric push rod 204. The telescopic end of the electric push rod 204 drives the first piston rod 203 to move downward. According to the communication area of the sliding baffle 403 blocking the lower through hole of the sliding cylinder 202, the pressure on the pressure sensing piece at the telescopic end of the electric push rod 204 is set. During 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 at 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. The additives are discharged uniformly from the lower through hole of the sliding cylinder 202, and then the additives are injected into the fixed housing 3 through the shunt pipe 207. The additives and the materials are synchronously conveyed to the left in the fixed housing 3 by the right barrier auger. The two rotating shafts 6 drive a number of stirring blocks 7 on them to rotate continuously. The a number of stirring blocks 7 stir and mix the additives and the materials conveyed by the right barrier auger. Through the barrier augers on both sides of the a number of stirring blocks 7, the stirring and mixing time of the a number of stirring blocks 7 for the additives and the materials is extended, ensuring the uniformity of the mixing of the additives and the materials. By moving the sliding baffle 403, the communication area between the sliding cylinder 202 and the shunt pipe 207 is changed, controlling the flow rate of the additives injected into the fixed housing 3 through the shunt pipe 207, so that when the materials in the fixed housing 3 are completely conveyed, all the additives in the sliding cylinder 202 are just injected. At this time, the control panel stops the electric push rod 204, and the first piston rod 203 returns to its initial position, ensuring that all parts of the materials are uniformly mixed with the additives, and improving the consistency of the quality of the polyamide produced by this device.

[0044] 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.

[0045] 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.

[0046] Based on Example 1, please refer to Figure 10 and Figure 11As shown, it further includes a pressure stabilizing mechanism. The pressure stabilizing mechanism is arranged inside the transmission shell 4. 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 guiding shell 601. The guiding shell 601 is slidably connected inside the transmission shell 4. A through hole is provided on the guiding shell 601. The through hole of the guiding shell 601 communicates with the mold 5. A spring is fixedly connected between the guiding shell 601 and the transmission shell 4. By moving the guiding shell 601 to compress the connected spring, the pressure of the molten polyamide on the right side of the guiding shell 601 inside the transmission shell 4 is detected. A connecting hydraulic cylinder 602 is fixedly connected to the left side of the transmission shell 4. The telescopic end of the connecting hydraulic cylinder 602 is inserted into the transmission shell 4. The telescopic end of the connecting hydraulic cylinder 602 is fixedly connected to the guiding shell 601. A cavity is provided inside the guiding shell 601. The connecting hydraulic cylinder 602 communicates with a fourth diversion pipe 603. The fourth diversion pipe 603 communicates with the cavity inside the guiding shell 601. The fourth diversion pipe 603 is inserted into the transmission shell 4. A limiting plate 604 is slidably connected inside the cavity of the guiding shell 601. The limiting plate 604 is composed of a cylinder and a square plate. The cylindrical part of the limiting plate 604 is slidably and sealingly fitted with the guiding shell 601. The limiting plate 604 is in sealing cooperation with the through hole of the guiding shell 601. The movement of the limiting plate 604 is controlled according to the moving distance of the guiding shell 601, and the area of the through hole of the guiding shell 601 is changed. When the amount of molten polyamide entering the transmission shell 4 changes, the through hole of the guiding shell 601 still conveys the polyamide into the mold 5 through a stable pressure, so that the speed of extruding the polyamide strip through the die holes 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 die holes thereon is provided inside the mold 5. The connecting hydraulic cylinder 602 and the fourth diversion pipe 603 are both filled with hydraulic oil.

[0047] Please refer to Figures 10-12As shown, the synchronization component includes a sliding frame 701 which is slidably connected to the mold 5. A guiding frame 702 is slidably and limitedly connected within the sliding frame 701. A rectangular hole is provided on the guiding frame 702, and the rectangular hole on the guiding frame 702 is in communication and cooperation with the sliding frame 701. Initially, the rectangular hole on the guiding 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 guiding frame 702. The connecting rod 703 is slidably connected to the mold 5. The upper part of the connecting rod 703 is inclined from top to bottom and to the right. The relative length of the inclined part of the connecting rod 703 on the horizontal plane is equal to the distance between the guiding frame 702 and the die hole of the mold 5. When the connecting rod 703 drives the guiding frame 702 to move upward, the sliding frame 701 moves leftward synchronously. Finally, after the guiding frame 702 moves, its rectangular hole is aligned and attached to the die hole. The rectangular hole of the guiding frame 702 is in communication with the sliding frame 701, restricting the polyamide to be extruded from the die hole of the mold 5 only through the rectangular hole of the sliding frame 701 and the guiding frame 702. A groove is provided on the sliding frame 701. A limiting frame 704 is slidably connected to the upper side of the mold 5. The limiting frame 704 is in limiting cooperation with the groove on the sliding frame 701. A slope is provided on the right side of the groove on the sliding frame 701. The slope is inclined from top to bottom and to the left. The height of the slope is less than the depth of the groove on the sliding frame 701. A spring is fixedly connected between the limiting frame 704 and the mold 5. 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 drawings). A detection block 705 is fixedly connected to the limiting frame 704. The detection block 705 is inserted into the mold 5. The detection block 705 always remains in contact with the mold 5 during the movement. By limiting the sliding frame 701 through the limiting frame 704, the rectangular hole of the guiding frame 702 is in communication with the sliding frame 701 only when the mold 5 is filled with polyamide, enabling multiple die holes on the mold 5 of the device to extrude polyamide strips synchronously initially, facilitating the simultaneous guiding of multiple polyamide strips and reducing the difficulty of subsequent cooling and granulation of the polyamide strips.

[0048] 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.

[0049] 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.

[0050] 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: It also includes a support shell (8), the support shell (8) being fixedly connected to the fixed shell (3), a fixed sleeve (201) being fixedly connected to the fixed shell (3), a sliding cylinder (202) being slidably connected in the fixed sleeve (201), a side wall of the support shell (8) being connected to a material guide pipe (9), a feed port being provided on the fixed shell (3), a sliding shell (10) being slidably connected to the feed port of the fixed shell (3) in the support shell (8), the sliding shell (10) being connected to the feed port of the fixed shell (3), a tension spring being fixedly connected between the support shell (8) and the sliding shell (10), an injection auger (11) being rotatably connected in the sliding shell (10), a conveying motor (305) being fixedly connected to the upper side of the support shell (8), an output shaft of the conveying motor (305) being fixedly connected to the injection auger (11) via a telescopic rod, and an injection mechanism for injecting additives into the fixed shell (3); 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).

2. The production device with a mixing structure for synthesizing special polyamide according to claim 1, 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).

3. The production device with a mixing structure for synthesizing special polyamide according to claim 2, 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.

4. The production device with a mixing structure for synthesizing special polyamide according to claim 2, 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).

5. The production device with a mixing structure for synthesizing special polyamide according to claim 4, 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).

6. The production device with a mixing structure for synthesizing special polyamide according to claim 4, 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.

7. The production device with a mixing structure for synthesizing special polyamide according to claim 6, 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).

8. The production device with a mixing structure for synthesizing special polyamide according to claim 7, 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).

9. The production device with a mixing structure for synthesizing special polyamide according to claim 7, 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.

Images