High-temperature-resistant plastic product molding extruder

Abstract

The invention discloses a high-temperature-resistant plastic product molding extruder, and relates to the technical field of extruders, the high-temperature-resistant plastic product molding extruder comprises an equipment box, and further comprises an extrusion mechanism mounted on the equipment box; the extrusion mechanism comprises a conveying pipe and a machine head, the exhaust mechanism comprises a transfer box communicated between the conveying pipe and the machine head, a stirrer is connected to the transfer box, the output end of the stirrer extends into the transfer box, and a first powder titanium sintered plate is fixedly connected to the top in the transfer box; and the output end of the stirrer is fixedly connected with a second powder titanium sintered plate. Plastic melt is stirred and vibrated, the melt is pushed to move upwards, bubbles in the melt can float upwards, and the bubbles floating to a first powder titanium sintered plate are discharged through a first exhaust assembly; meanwhile, the second exhaust assembly is arranged on the stirring blade, the second exhaust assembly continuously sucks bubbles in the melt near the stirring blade through negative pressure, the bubbles in the melt are reduced, and the quality of plastic products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of extruders, in particular to a high-temperature resistant plastic product molding extruder. Background Art

[0002] An extruder is a device that heats and extrudes raw material particles into products of a specific shape. Among them, a high-temperature resistant plastic product molding extruder, that is, an extruder that uses high-temperature resistant plastic particles as raw material particles, is used to manufacture high-temperature resistant plastic products. Existing plastic particles contain air, and some air will remain inside the melted plastic particles. After the plastic melt is cooled and formed, bubbles will remain inside, affecting the quality of plastic products.

[0003] In the prior art, a driving motor is used to drive a spiral vertical rod and multiple stirring rods and side plates on the spiral vertical rod to rotate, so as to stir the plastic melt, float the bubbles in the melt, and discharge the gas in the melt. In this method, when the high-temperature resistant plastic melt is stirred and exhausted, due to the high viscosity of the high-temperature resistant plastic melt, the movement resistance of the bubbles is large, and some bubbles may still remain in the melt after stirring, affecting the quality of the plastic product; a powder sintered alloy block is used in combination with an exhaust component to strongly absorb the air inside the mold. In this method, it is impossible to evacuate the inside of the plastic melt, the gas inside the plastic melt cannot be effectively extracted, and it is not convenient to quickly change the negative pressure intensity through the agitator, which reduces the suction effect on the bubbles in the melt. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that due to the high viscosity of the high temperature resistant plastic melt, the movement resistance of the bubbles is large, and some bubbles may still remain in the melt after stirring, affecting the quality of the plastic products, and to propose a high temperature resistant plastic product molding extruder.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: a high temperature resistant plastic product molding extruder, including an equipment box, and also including: An extrusion mechanism, the extrusion mechanism is installed on the equipment box; The exhaust mechanism, the extrusion mechanism includes a conveying pipe and a head, the exhaust mechanism includes a transfer box connected between the conveying pipe and the head, the transfer box is connected to a stirrer, the output end of the stirrer extends into the interior of the transfer box, a first powder titanium sintered plate is fixedly connected to the top of the transfer box, a second powder titanium sintered plate is fixedly connected to the output end of the stirrer, the bottom of the first powder titanium sintered plate is connected to the interior of the transfer box, and the top is connected to the first exhaust assembly, one end of the second powder titanium sintered plate is connected to the interior of the transfer box, and the other end is connected to the second exhaust assembly, the second exhaust assembly includes a vacuum pump installed on the outside of the transfer box, and the vacuum pump is used to control the air pressure state inside the second exhaust assembly.

[0006] In the above-mentioned high-temperature resistant plastic product molding extruder, the extrusion mechanism includes a driving part installed on the equipment box, the driving part is fixedly connected to an outer box, the outer box is fixedly connected to a conveying pipe, the output end of the driving part is sealed and passes through the conveying pipe, and is coaxially fixedly connected to a spiral feeding rod, the spiral feeding rod is rotatably connected to the inside of the conveying pipe, a plurality of heaters are installed on the conveying pipe, and the input end is connected to a feeding assembly, the output end is fixedly connected to a diverter plate, and a plurality of diverter holes connecting the conveying pipe and the transfer box are opened on the diverter plate.

[0007] In the above-mentioned high-temperature resistant plastic product molding extruder, the feeding assembly includes a hopper fixedly connected to the outer box, one side of the hopper is connected to an ion blower, and the other side is connected to a dust filter. A stirring part is installed inside the hopper, and a star-shaped discharge valve is connected to the bottom. The bottom end of the star-shaped discharge valve is connected to the input end of the conveying pipe.

[0008] In the above-mentioned high temperature resistant plastic product forming extruder, a heat-insulating shell is fixedly connected to the outside of the transfer box, and a heating plate is installed on the heat-insulating shell.

[0009] In the above-mentioned high-temperature resistant plastic product molding extruder, the agitator includes a driving assembly connected to the insulation shell, the top of the transfer box and the top of the insulation shell form an installation space, the output end of the driving assembly extends into the interior of the installation space, and is connected to a second pipe, the bottom end of the second pipe passes through the top wall of the transfer box, and is sealed and slidably connected to a connecting shell, the bottom end of the connecting shell is connected to a third pipe, a plurality of stirring blades are fixedly connected to the outside of the third pipe, a plurality of second powder titanium sintered plates are fixedly connected to the plurality of stirring blades one by one, the plurality of stirring blades are all arranged obliquely, and the stirring direction is upward along the axial direction of the third pipe.

[0010] In the above-mentioned high-temperature resistant plastic product molding extruder, the agitator also includes a vibration component connected to the bottom of the third pipe, the vibration component includes a fixed seat fixedly connected to the bottom of the transfer box, a connecting seat is coaxially rotatably connected inside the fixed seat, a plurality of first extrusion ball blocks are fixedly connected inside the fixed seat, the fixed seat and the connecting seat correspond one-to-one with the outer side and the inner side of the third pipe to seal and slide together, a spring is fixedly connected between the top of the connecting seat and the third pipe, a plurality of second extrusion ball blocks are fixedly connected to the bottom end of the third pipe, and the plurality of first extrusion ball blocks correspond one-to-one to the plurality of second extrusion ball blocks.

[0011] In the above-mentioned high-temperature resistant plastic product molding extruder, the driving assembly includes a driving motor installed on the top of the insulation shell, the output end of the driving motor is sealed and passes through the top wall of the insulation shell, and is coaxially fixedly connected with a driving gear, and a driven gear is meshed with the side of the driving gear. The driving gear and the driven gear are both located inside the installation space, and the driven gear is coaxially fixedly connected to the second pipe.

[0012] In the above-mentioned high-temperature resistant plastic product molding extruder, a porous plate is fixedly connected to the top of the transfer box, the first powder titanium sintered plate is fixedly connected to the bottom of the porous plate, the upper surface of the porous plate and the inner top of the transfer box form an exhaust cavity, and the first exhaust component includes a connecting pipe connected to the exhaust cavity.

[0013] In the above-mentioned high-temperature resistant plastic product molding extruder, the vacuum pump input end is connected with a one-way pipe, a hollow cavity is opened inside the stirring blade, a first cavity is opened inside the third pipeline, one end of the hollow cavity is connected with the second powder titanium sintered plate, and the other end is connected with the first cavity, and the end of the one-way pipe away from the vacuum pump passes through the insulation shell and the second pipeline, and is connected with the inside of the first cavity; The top end of the second pipe is connected to the first pipe through a rotating joint. The top end of the first pipe seals and passes through the insulation shell and is connected to the external exhaust gas treatment device. The end of the connecting pipe away from the exhaust chamber is connected to the first pipe. The first pipe is provided with a one-way hole for the one-way pipe to pass through.

[0014] In the above-mentioned high-temperature resistant plastic product molding extruder, a second cavity is opened inside the second pipe, and the second cavity is connected to the first cavity through a connecting shell. A piston is sealingly and slidingly connected inside the second cavity and is fixedly connected to a fixing ring. The side of the piston close to the first cavity is against the fixing ring. The one-way tube is rotatably sealed and penetrated with the second cavity and the piston. The initial air pressure inside the second cavity is greater than the initial air pressure inside the first cavity, and the air pressures of both are lower than the internal air pressure of the transfer box. A fixed block is fixedly connected inside the second cavity, and the fixed block constitutes the top wall of the second cavity. A mounting rod is fixedly connected to the bottom of the fixed block, and a pressure sensor is installed at the bottom of the mounting rod. The pressure sensor and the vacuum pump are electrically connected to a controller, which is installed inside the equipment box and is used to receive the signal of the pressure sensor to control the working state of the vacuum pump.

[0015] Compared with the prior art, the advantages of the present invention are: 1. The present invention provides an exhaust mechanism, wherein an agitator stirs and vibrates the plastic melt and pushes the melt to move upward, which is beneficial for the bubbles in the melt to float up, and the bubbles that float up to the first titanium powder sintered plate are discharged through the first exhaust component; at the same time, a second exhaust component is provided on the stirring blade, and the second exhaust component continuously sucks the bubbles in the melt near the stirring blade through negative pressure, and extracts the bubbles in contact with the second titanium powder sintered plate on the stirring blade, thereby reducing the bubbles in the melt, and effectively avoiding the problem that some bubbles may still remain after stirring and vibration due to the high viscosity of the high-temperature resistant plastic melt and the large movement resistance of the bubbles; and when the third pipe vibrates up and down, the size of the space inside the first cavity changes continuously, so that the air pressure inside it changes continuously, forming a disturbance effect on the melt and the bubbles in the melt, enhancing the suction effect on the bubbles in the melt, further reducing the bubbles in the melt, and improving the quality of plastic products.

[0016] 2. The present invention provides a feeding assembly, and uses an ion fan to deliver an airflow carrying positive and negative ions into the hopper. The stirring part stirs the plastic particles, thereby achieving a static removal and air-drying effect on the plastic particles. Removing static electricity on the plastic particles can effectively reduce the possibility of blockage during material discharge, dry the plastic particles, reduce bubbles in the plastic melt by reducing moisture, reduce the workload of the subsequent exhaust mechanism, and extend the service life of the exhaust mechanism.

[0017] 3. The present invention sets a second cavity, a pressure sensor and a piston. The first cavity sucks bubbles in the melt to increase its own air pressure until it is greater than the air pressure in the second cavity. Under the action of the air pressure, the piston moves upward to trigger the electric pressure sensor. The controller receives the signal from the pressure sensor and controls the operation of the vacuum pump. The vacuum pump extracts the gas in the first cavity through a one-way tube to restore the air pressure in the first cavity to its initial state, so that the first cavity continues to extract bubbles. At the same time, continuous suction can be achieved through intermittent use of the vacuum pump, thereby avoiding the situation where the vacuum pump is damaged due to continuous suction when there are no bubbles. The service life of the vacuum pump can be effectively extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a high temperature resistant plastic product molding extruder proposed by the present invention; Figure 2 This is a schematic diagram of the internal structure of an outer box of a high-temperature resistant plastic product molding extruder proposed by the present invention; Figure 3 A schematic diagram of a feeding assembly of a high temperature resistant plastic product forming extruder proposed by the present invention; Figure 4 A cross-sectional view of the hopper structure of a high-temperature resistant plastic product molding extruder proposed by the present invention; Figure 5 This is a cross-sectional view of the delivery pipe and transfer box structure of a high-temperature resistant plastic product molding extruder proposed by the present invention; Figure 6 Schematic diagram of the structure of the stirring blade, the second powder titanium sintering plate and the fixing seat of the high temperature resistant plastic product molding extruder proposed by the present invention Figure 7 A schematic diagram of an exhaust mechanism of a high temperature resistant plastic product molding extruder proposed by the present invention; Figure 8 This is a cross-sectional view of the structure of the first pipeline, the second pipeline and the third pipeline of a high-temperature resistant plastic product molding extruder proposed by the present invention; Fig. 9 for Figure 8 A magnified detail in the middle; Fig.10 for Figure 8 A magnified view of the detail at B in the middle; Fig.11 This is a schematic diagram of the disassembled structure of the third pipeline, the fixing seat and the connecting seat of the high-temperature resistant plastic product molding extruder proposed by the present invention.

[0019] In the figure: 1, equipment box; 2, driving unit; 3, outer box; 4, hopper; 5, dust filter; 6, conveying pipe; 7, insulation shell; 8, heating plate; 9, transfer box; 10, head; 11, heater; 12, stirring unit; 13, star discharge valve; 14, ion fan; 15, spiral feeding rod; 16, splitter plate; 17, driving gear; 18, driven gear; 19, first pipeline; 20, second pipeline; 21, connecting pipe; 22, porous plate; 23. First powder titanium sintered plate; 24. Third pipeline; 25. Connecting shell; 26. Stirring blade; 27. Second powder titanium sintered plate; 28. Fixed seat; 29. ​​One-way tube; 30. Vacuum pump; 31. Piston; 311. First cavity; 312. Second cavity; 32. Mounting rod; 33. Pressure sensor; 34. Fixed ring; 35. Fixed block; 36. Connecting seat; 37. Spring; 38. First extrusion ball block; 39. Second extrusion ball block. DETAILED DESCRIPTION

[0020] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0021] Reference Figure 1-Figure 5 , a high temperature resistant plastic product molding extruder, comprising an equipment box 1, and also comprising: Extrusion mechanism: the extrusion mechanism is installed on the equipment box 1.

[0022] The extrusion mechanism includes a driving part 2 installed on an equipment box 1, to which an outer box 3 is fixedly connected, and a conveying pipe 6 is fixedly connected inside the outer box 3. The output end of the driving part 2 is sealed and passes through the conveying pipe 6, and is coaxially fixedly connected with a spiral feeding rod 15, which is rotatably connected to the inside of the conveying pipe 6. A plurality of heaters 11 are installed on the conveying pipe 6, and the input end is connected to a feeding assembly, and the output end is fixedly connected to a diverter plate 16.

[0023] The feeding assembly includes a hopper 4 fixedly connected to the outer box 3, one side of the hopper 4 is connected to an ion fan 14, and the other side is connected to a dust filter 5. A stirring part 12 is installed inside the hopper 4, and a star-shaped discharge valve 13 is connected to the bottom. The bottom end of the star-shaped discharge valve 13 is connected to the input end of the conveying pipe 6.

[0024] The ion blower 14 adopts the existing technology and is used to transport the airflow containing positive and negative ions into the hopper 4. The dust filter 5 adopts the existing technology and filters the dust in the airflow through the filtering structure and discharges the filtered airflow from the inside of the hopper 4.

[0025] The stirring part 12 adopts the existing stirring mechanism, and the blades are driven to rotate by an external motor to stir the plastic particles inside the hopper 4.

[0026] The star-shaped discharge valve 13 adopts the existing technology, and realizes quantitative and uniform discharge of materials through a rotating star-shaped impeller, and can effectively prevent air leakage.

[0027] Reference Figure 5-Figure 9 , exhaust mechanism, the extrusion mechanism includes a conveying pipe 6 and a head 10, the exhaust mechanism includes a transfer box 9 connected between the conveying pipe 6 and the head 10, the transfer box 9 is connected to a stirrer, the output end of the stirrer extends into the interior of the transfer box 9, a first powder titanium sintered plate 23 is fixedly connected to the top of the transfer box 9, a second powder titanium sintered plate 27 is fixedly connected to the output end of the stirrer, the bottom of the first powder titanium sintered plate 23 is connected to the interior of the transfer box 9, and the top is connected to the first exhaust assembly, one end of the second powder titanium sintered plate 27 is connected to the interior of the transfer box 9, and the other end is connected to the second exhaust assembly, the second exhaust assembly includes a vacuum pump 30 installed on the outside of the transfer box 9, and the vacuum pump 30 is used to control the air pressure state inside the second exhaust assembly.

[0028] The first titanium powder sintered plate 23 and the second titanium powder sintered plate 27 are both made of titanium powder sintered, and have tiny gaps, so that air can pass through but molten plastic cannot, thereby facilitating the exhaust operation of the molten plastic.

[0029] The diverter plate 16 is provided with a plurality of diverter holes connecting the delivery pipe 6 and the transfer box 9 .

[0030] The outer side of the transfer box 9 is fixedly connected with a heat-insulating shell 7 , and a heating plate 8 is installed on the heat-insulating shell 7 to heat and keep the plastic melt in the transfer box 9 warm.

[0031] The agitator includes a driving assembly connected to the insulation shell 7. The top of the transfer box 9 and the top of the insulation shell 7 form an installation space. The output end of the driving assembly extends into the interior of the installation space and is connected to a second pipe 20. The bottom end of the second pipe 20 passes through the top wall of the transfer box 9 and is sealed and slidably connected to a connecting shell 25. The bottom end of the connecting shell 25 is connected to a third pipe 24. A plurality of stirring blades 26 are fixedly connected to the outside of the third pipe 24. A plurality of second powder titanium sintered plates 27 are fixedly connected to the plurality of stirring blades 26 one by one. The plurality of stirring blades 26 are all arranged obliquely, and the stirring direction is axially upward along the third pipe 24.

[0032] A sealing strip is fixedly provided on the inner side of the connecting shell 25 , and the sealing strip is used to seal the joint between the connecting shell 25 and the second pipe 20 , thereby improving the sealing effect between the two.

[0033] Reference Fig.10 and Fig.11 The agitator also includes a vibration component connected to the bottom of the third pipe 24, and the vibration component includes a fixed seat 28 fixedly connected to the bottom of the transfer box 9, and a connecting seat 36 is coaxially rotatably connected inside the fixed seat 28. A plurality of first extrusion ball blocks 38 are fixedly connected inside the fixed seat 28. The fixed seat 28 and the connecting seat 36 correspond one-to-one to the outer side and the inner side of the third pipe 24 and are sealed and slidably matched. A spring 37 is fixedly connected between the top of the connecting seat 36 and the third pipe 24. A plurality of second extrusion ball blocks 39 are fixedly connected to the bottom end of the third pipe 24, and the plurality of first extrusion ball blocks 38 correspond one-to-one to the plurality of second extrusion ball blocks 39.

[0034] The driving assembly includes a driving motor installed on the top of the insulation shell 7. The output end of the driving motor is sealed and passes through the top wall of the insulation shell 7. It is coaxially fixedly connected with a driving gear 17. A driven gear 18 is meshed with the side of the driving gear 17. The driving gear 17 and the driven gear 18 are both located inside the installation space. The driven gear 18 is coaxially fixedly connected with the second pipe 20.

[0035] A porous plate 22 is fixedly connected to the top of the transfer box 9, and the first powder titanium sintered plate 23 is fixedly connected to the bottom of the porous plate 22. The upper surface of the porous plate 22 and the inner top of the transfer box 9 form an exhaust cavity. The first exhaust assembly includes a connecting pipe 21 connected to the exhaust cavity.

[0036] The porous plate 22 provides a support effect for the first titanium powder sintered plate 23 , thereby improving its stability during operation.

[0037] The input end of the vacuum pump 30 is connected to a one-way tube 29, a hollow cavity is opened inside the stirring blade 26, a first cavity 311 is opened inside the third pipe 24, one end of the hollow cavity is connected to the second powder titanium sintered plate 27, and the other end is connected to the first cavity 311. The end of the one-way tube 29 away from the vacuum pump 30 passes through the insulation shell 7 and the second pipe 20, and is connected to the inside of the first cavity 311.

[0038] The top end of the second pipe 20 is connected to the first pipe 19 through a rotating joint. The top end of the first pipe 19 seals and passes through the insulation shell 7 and is connected to the external exhaust gas treatment device. The end of the connecting pipe 21 away from the exhaust chamber is connected to the first pipe 19. The first pipe 19 is provided with a one-way hole for the one-way pipe 29 to pass through.

[0039] The external waste gas treatment device performs waste gas treatment operations on the gas discharged from the first pipeline 19 to prevent the waste gas from being directly discharged and polluting the environment.

[0040] A second cavity 312 is defined inside the second pipe 20 . The second cavity 312 is connected to the first cavity 311 through the connecting shell 25 . A piston 31 is sealingly and slidably connected inside the second cavity 312 and fixedly connected to the fixing ring 34 .

[0041] The fixing ring 34 is used to limit the position of the piston 31 .

[0042] The side of the piston 31 close to the first cavity 311 rests on the fixing ring 34, and the one-way tube 29 is rotatably sealed and fitted with the second cavity 312 and the piston 31. The initial air pressure inside the second cavity 312 is greater than the initial air pressure inside the first cavity 311, and the air pressures of both are less than the internal air pressure of the transfer box 9. A fixing block 35 is fixedly connected to the inside of the second cavity 312, and the fixing block 35 constitutes the top wall of the second cavity 312. A mounting rod 32 is fixedly connected to the bottom of the fixing block 35, and a pressure sensor 33 is installed at the bottom of the mounting rod 32. The pressure sensor 33 and the vacuum pump 30 are electrically connected to a controller, which is installed inside the equipment box 1 and is used to receive the signal of the pressure sensor 33 to control the working state of the vacuum pump 30.

[0043] When the present invention is used, the external conveying equipment conveys the high-temperature resistant plastic particles to the interior of the hopper 4, and the ion fan 14 works to blow out wind containing positive and negative ions, which can eliminate the static electricity between the plastic particles and form an air-drying effect on the plastic particles, thereby reducing the moisture on the plastic particles. By reducing the moisture, the purpose of reducing bubbles in the subsequent molten plastic is achieved. The stirring part 12 works to stir the plastic particles inside the hopper 4 to break up the plastic particles inside the hopper 4, which can also promote the contact between the plastic particles and the ions. The gas blown out by the ion fan 14 can be filtered and discharged through the dust filter part 5. Through stirring and destaticizing operations, the aggregation of plastic particles can be effectively reduced, thereby reducing the possibility of blockage during material discharge.

[0044] The processed plastic particles are quantitatively and evenly discharged under the control of the star-shaped discharge valve 13 , and air leakage can be effectively prevented. The plastic particles fall into the interior of the conveying pipe 6 after passing through the star-shaped discharge valve 13 .

[0045] The driving part 2 works, and its output end drives the spiral feeding rod 15 to rotate, and cooperates with the multiple heaters 11 to heat the plastic particles inside the conveying pipe 6 to a molten state and then convey them.

[0046] After the plastic particles are melted inside the conveying pipe 6 , they enter the transfer box 9 through the diverter plate 16 .

[0047] When the molten plastic enters the transfer box 9, the drive motor starts working, and its output end drives the second pipe 20 to rotate through the driving gear 17 and the driven gear 18. The second pipe 20 drives the multiple stirring blades 26 to rotate through the connecting shell 25 and the third pipe 24 to stir the plastic melt, so as to facilitate the floating of bubbles in the melt. The floating bubbles pass through the first powder titanium sintered plate 23 and the porous plate 22 into the exhaust chamber, and are discharged into the first pipe 19 through the connecting pipe 21, and finally discharged into the external exhaust gas treatment device.

[0048] When the stirring blade 26 rotates, it pushes the melt to move upward, further facilitating the bubbles in the melt to float up quickly along with the upward movement of the melt, thereby improving the effect of removing the bubbles in the melt.

[0049] During the rotation of the third pipe 24, the third pipe 24 drives the multiple second extrusion ball blocks 39 at the bottom thereof to rotate, so that the second extrusion ball blocks 39 continuously press over the first extrusion ball blocks 38 on the fixed seat 28, so that the third pipe 24 moves upward. After the second extrusion ball blocks 39 and the first extrusion ball blocks 38 are rotated and misaligned, the third pipe 24 is pulled downward by the elastic force of the spring 37, so that when the third pipe 24 rotates, the third pipe 24 drives the stirring blades 26 to vibrate up and down reciprocatingly, thereby improving the stirring effect of the stirring blades 26 on the melt, enhancing the floating effect of bubbles in the melt, and better removing bubbles in the melt.

[0050] At the same time, since the air pressure inside the first cavity 311 is significantly lower than the air pressure inside the transfer box 9, the first cavity 311 forms a negative pressure suction effect on the bubbles in the melt near the second powder titanium sintered plate 27 through the hollow cavity of the stirring blade 26 and the second powder titanium sintered plate 27. During the rotation and vibration of the stirring blade 26, after the second powder titanium sintered plate 27 thereon contacts with the bubbles, the bubbles enter the first cavity 311 through the second powder titanium sintered plate 27 and the hollow cavity. Due to the high viscosity of the melt, the movement resistance of the bubbles in the melt is relatively large. Some bubbles may still remain in the melt through stirring and vibration. Therefore, through the design of the air pressure difference, continuous suction is generated on the surface of the stirring blade 26. During its rotation and vibration, the bubbles inside the melt are continuously sucked, further improving the effect of removing bubbles in the melt.

[0051] When the first cavity 311 performs negative pressure suction on the bubbles in the melt near the stirring blade 26, when the third pipe 24 vibrates up and down, the size of the space inside the first cavity 311 changes continuously, so that the air pressure inside it changes continuously, forming a disturbance effect on the melt and the bubbles in the melt, and enhancing the suction effect on the bubbles in the melt.

[0052] The initial air pressure inside the second cavity 312 is greater than the initial air pressure inside the first cavity 311, and the air pressures of both are less than the internal air pressure of the transfer box 9. As the bubbles are sucked into the first cavity 311, the air pressure inside the first cavity 311 increases continuously. When the air pressure inside the first cavity 311 increases continuously until it is greater than the air pressure inside the second cavity 312, the piston 31 moves upward under the action of the air pressure. The piston 31 contacts the pressure sensor 33. The controller receives the signal from the pressure sensor 33 and controls the vacuum pump 30 to work. The vacuum pump 30 extracts the gas in the first cavity 311 through the one-way tube 29, so that the air pressure in the first cavity 311 returns to its initial state. The piston 31 returns to its original position under the action of the air pressure and performs the next work.

[0053] After the melt in the transfer box 9 is exhausted, the melt is extruded through the die head 10 .

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high temperature resistant plastic product molding extruder, comprising an equipment box (1), characterized in that: Also includes: An extrusion mechanism, the extrusion mechanism is mounted on the equipment box (1); The exhaust mechanism comprises an extrusion mechanism including a conveying pipe (6) and a die head (10), the exhaust mechanism comprising a transfer box (9) connected between the conveying pipe (6) and the die head (10), the transfer box (9) being connected to a stirrer, the output end of the stirrer extending into the interior of the transfer box (9), a first powder titanium sintering plate (23) being fixedly connected to the top of the transfer box (9), a second powder titanium sintering plate (27) being fixedly connected to the output end of the stirrer, the bottom of the first powder titanium sintering plate (23) being connected to the interior of the transfer box (9), and the top being connected to a first exhaust assembly, one end of the second powder titanium sintering plate (27) being connected to the interior of the transfer box (9), and the other end being connected to a second exhaust assembly, the second exhaust assembly comprising a vacuum pump (30) mounted on the outside of the transfer box (9), the vacuum pump (30) being used to control the air pressure state inside the second exhaust assembly.

2. The high temperature resistant plastic product molding extruder according to claim 1, characterized in that: The extrusion mechanism comprises a driving part (2) mounted on an equipment box (1), the driving part (2) being fixedly connected to an outer box (3), the outer box (3) being fixedly connected to a conveying pipe (6), the output end of the driving part (2) being sealed and penetrating through the conveying pipe (6), and being coaxially fixedly connected to a spiral feed rod (15), the spiral feed rod (15) being rotatably connected to the inside of the conveying pipe (6), a plurality of heaters (11) being mounted on the conveying pipe (6), the input end being connected to a feed assembly, the output end being fixedly connected to a diverter plate (16), the diverter plate (16) being provided with a plurality of diverter holes connecting the conveying pipe (6) and the transfer box (9).

3. The high temperature resistant plastic product molding extruder according to claim 2, characterized in that: The feeding assembly comprises a hopper (4) fixedly connected to an outer box (3); one side of the hopper (4) is connected to an ion blower (14), and the other side is connected to a dust filter (5); a stirring portion (12) is installed inside the hopper (4), and a star-shaped discharge valve (13) is connected at the bottom; the bottom end of the star-shaped discharge valve (13) is connected to an input end of a conveying pipe (6).

4. The high temperature resistant plastic product molding extruder according to claim 1, characterized in that: The outer side of the transfer box (9) is fixedly connected to a heat-insulating shell (7), and a heating plate (8) is installed on the heat-insulating shell (7).

5. The high temperature resistant plastic product forming extruder according to claim 4, characterized in that: The agitator comprises a drive assembly connected to a heat-insulating shell (7); the top of a transfer box (9) and the top of the heat-insulating shell (7) enclose an installation space; an output end of the drive assembly extends into the interior of the installation space and is connected to a second pipe (20); the bottom end of the second pipe (20) passes through the top wall of the transfer box (9) and is sealed and slidably connected to a connecting shell (25); the bottom end of the connecting shell (25) is connected to a third pipe (24); a plurality of stirring blades (26) are fixedly connected to the outside of the third pipe (24); a plurality of second powder titanium sintered plates (27) are fixedly connected to the plurality of stirring blades (26) in a one-to-one correspondence; the plurality of stirring blades (26) are all arranged obliquely, and the stirring direction is upward along the axial direction of the third pipe (24).

6. The high temperature resistant plastic product forming extruder according to claim 5, characterized in that: The agitator further comprises a vibration assembly connected to the bottom of the third pipe (24), the vibration assembly comprising a fixed seat (28) fixedly connected to the bottom of the transfer box (9), a connecting seat (36) coaxially rotatably connected inside the fixed seat (28), a plurality of first extrusion ball blocks (38) fixedly connected inside the fixed seat (28), the fixed seat (28) and the connecting seat (36) correspondingly sealingly slidingly cooperate with the outer side and the inner side of the third pipe (24), a spring (37) fixedly connected between the top of the connecting seat (36) and the third pipe (24), a plurality of second extrusion ball blocks (39) fixedly connected to the bottom end of the third pipe (24), the plurality of first extrusion ball blocks (38) correspondingly corresponding to the plurality of second extrusion ball blocks (39).

7. The high temperature resistant plastic product forming extruder according to claim 5, characterized in that: The drive assembly comprises a drive motor mounted on the top of the heat-insulating shell (7); the output end of the drive motor is sealed and penetrates the top wall of the heat-insulating shell (7) and is coaxially fixedly connected with a drive gear (17); a driven gear (18) is meshed with a side of the drive gear (17); the drive gear (17) and the driven gear (18) are both located inside the installation space; and the driven gear (18) is coaxially fixedly connected with the second pipe (20).

8. The high temperature resistant plastic product forming extruder according to claim 5, characterized in that: A porous plate (22) is fixedly connected to the top of the transfer box (9), a first powder titanium sintering plate (23) is fixedly connected to the bottom of the porous plate (22), an upper surface of the porous plate (22) and the inner top of the transfer box (9) form an exhaust cavity, and the first exhaust assembly includes a connecting pipe (21) connected to the exhaust cavity.

9. The high temperature resistant plastic product forming extruder according to claim 6, characterized in that: The input end of the vacuum pump (30) is connected to a one-way tube (29), a hollow cavity is provided inside the stirring blade (26), a first cavity (311) is provided inside the third pipeline (24), one end of the hollow cavity is connected to the second powder titanium sintered plate (27), and the other end is connected to the first cavity (311), and the end of the one-way tube (29) away from the vacuum pump (30) passes through the heat-insulating shell (7) and the second pipeline (20), and is connected to the inside of the first cavity (311); The top end of the second pipe (20) is connected to the first pipe (19) via a rotating joint. The top end of the first pipe (19) is sealed and penetrates the heat-insulating shell (7) and is connected to an external exhaust gas treatment device. The end of the connecting pipe (21) away from the exhaust chamber is connected to the first pipe (19). The first pipe (19) is provided with a one-way hole for the one-way pipe (29) to pass through.

10. The high temperature resistant plastic product forming extruder according to claim 9, characterized in that: A second cavity (312) is provided inside the second pipe (20). The second cavity (312) is communicated with the first cavity (311) via a connecting shell (25). A piston (31) is sealingly and slidably connected inside the second cavity (312) and fixedly connected to a fixing ring (34). The side of the piston (31) close to the first cavity (311) abuts against the fixing ring (34). The one-way tube (29) is rotatably and sealingly penetrated by the second cavity (312) and the piston (31). The initial gas pressure inside the second cavity (312) is greater than that inside the first cavity (311). The initial air pressure of the second cavity (312) is less than the internal air pressure of the transfer box (9), a fixed block (35) is fixedly connected to the inside of the second cavity (312), the fixed block (35) forms the top wall of the second cavity (312), a mounting rod (32) is fixedly connected to the bottom of the fixed block (35), a pressure sensor (33) is installed at the bottom end of the mounting rod (32), the pressure sensor (33) and the vacuum pump (30) are both electrically connected to a controller, the controller is installed inside the equipment box (1), and is used to receive a signal from the pressure sensor (33) to control the working state of the vacuum pump (30).

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