Plastic profiled internal mixer extruder

Abstract

This invention relates to the field of plastic internal mixing, and particularly to a plastic molding internal mixing extruder, comprising a horizontally arranged feed pipe, a feed funnel vertically connected to the feed pipe, a feeding mechanism jointly arranged in the feed funnel and the feed pipe, a mixing mechanism arranged at the lower end of the feed pipe, and an auxiliary mechanism connected between the feeding mechanism and the mixing mechanism, the auxiliary mechanism including a fixed cylinder sleeved on the outer side of the feed pipe; this invention enables the pre-mixing of the conveyed material through the feeding mechanism and the conveying of the material to the mixing mechanism for mixing and internal mixing, the mixing mechanism enables the melting and mixing of the material, and during this process, the hot gas flow generated when the plastic is heated and melted can be absorbed and purified by the auxiliary mechanism, and the hot gas flow can be conveyed to the feeding mechanism to preheat the material, thereby reducing the material processing time and improving the material mixing efficiency.

Description

Technical Field

[0001] This invention relates to the field of plastic mixing, and particularly to a plastic molding mixing extruder. Background Technology

[0002] Plastic internal mixing is a common plastic processing method used to mix and heat different types of plastic raw materials to obtain plastic products that meet specific requirements. In existing technologies, plastic processing generally involves first internal mixing, then extrusion by an extruder, and finally pelletizing to the required size and particle size using a granulator or pelletizer. This process requires multiple independent pieces of equipment to complete the material processing, resulting in a large footprint, low production efficiency, and the material being exposed to air during the transfer from the internal mixer to the extruder. This not only causes the material to emit odors, deteriorating the working environment, but also allows the external environment to potentially affect the material, reducing product quality and yield.

[0003] To address the potential problems that may arise during plastic internal mixing and molding, those skilled in the art have made numerous optimizations to plastic molding internal mixing devices to resolve issues of concern to different consumer groups. For a more accurate comparison, Chinese Patent Publication No. CN115383931A discloses a plastic molding internal mixing extruder, including a base and internal mixing and extrusion devices both mounted on the base. In operation, the internal mixing chamber of the internal mixer has two layers: the upper layer can be considered a premixing mechanism, and the lower layer a mixing mechanism. The two layers are separated by a partition. The material first undergoes initial extrusion by a pair of rotors, adhering together before entering the lower mixing mechanism for further compaction and internal mixing. Finally, it is directly fed into the extrusion device, completing the internal mixing and extrusion molding of the material. The combined action of the premixing and mixing mechanisms effectively compresses the dispersed material into a dense mass, ensuring thorough mixing.

[0004] However, the above-mentioned plastic molding internal mixing extruder has some shortcomings in actual use: 1. Because this device uses a symmetrical gourd-shaped diaphragm with an opening in the middle of the upper part of the diaphragm for material to enter the diaphragm and be squeezed, when a lot of material falls from above and the roller inside the diaphragm fails to guide the material into the diaphragm in time, the material will fall on the upper part of the diaphragm and accumulate, thus affecting the internal mixing and extrusion efficiency of the material.

[0005] 2. The device failed to effectively seal the mixing chamber during operation. When the material enters the mixing chamber and is squeezed and ground, the irritating gas generated will escape from the top of the mixing chamber, causing pollution to the working environment and deteriorating the working environment, thus affecting the continued mixing of the material.

[0006] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing plastic molding internal mixing extruders. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a plastic molding internal mixing extruder. The plastic molding internal mixing extruder includes a horizontally arranged feed pipe, with a feed funnel vertically connected to the feed pipe. A feeding mechanism is jointly provided within the feed funnel and the feed pipe. The feeding mechanism includes a vertical rigid pipe connected to the feed pipe. A mixing mechanism is located at the lower end of the vertical rigid pipe. The mixing mechanism includes a horizontal rigid pipe connected to the feeding mechanism. An auxiliary mechanism is also connected between the feeding mechanism and the mixing mechanism. The auxiliary mechanism includes a fixed cylinder sleeved on the outer side of the feed pipe.

[0008] The feeding mechanism also includes a mixing unit set on the feeding hopper. A support side plate is provided at the end of the feeding pipe away from the vertical rigid pipe. A driven shaft is rotatably passed through the middle of the support side plate. A spiral conveying blade is provided on the outer side of the driven shaft, which slides and fits against the inner wall of the feeding pipe. One end of the conveying blade is located inside the vertical rigid pipe. A pulley is sleeved on the outer side of the driven shaft away from the vertical rigid pipe. The pulley is connected to the mixing mechanism through a transmission belt. A drive cylinder is vertically mounted on the upper end of the vertical rigid pipe through a mounting bracket. A pressure plate corresponding to the inner diameter of the vertical rigid pipe is provided at the output end of the drive cylinder.

[0009] Preferably, the mixing unit includes support columns, a support circular plate, a servo motor, a rotating shaft, stirring blades, a stirring rod, and scrapers. Multiple support columns are evenly arranged at the upper end of the feed funnel, and a support circular plate is arranged at the upper end of the support columns. A servo motor is vertically arranged on the support circular plate through a motor base. A rotating shaft that passes through the support circular plate is arranged at the lower end of the output shaft of the servo motor. Stirring blades that fit against the inner wall of the feed funnel are arranged on the outer surface of the rotating shaft. A stirring rod is horizontally inserted through the outer side of the rotating shaft. Scrapers that fit against the inner wall of the feed funnel are arranged at both ends of the stirring rod.

[0010] Preferably, the internal mixing mechanism further includes a heating tube, spiral blades, a drive shaft, a drive motor, a reciprocating screw, a conveying roller, a spiral protrusion, a limiting slider, a linkage plate, an extrusion unit, and a transmission unit. A horizontal rigid tube is fixedly installed at the lower end of a vertical rigid tube and connected to it. A heating tube is provided on the inner wall of the horizontal rigid tube, and spiral blades are slidably fitted onto the inner wall of the heating tube. A drive shaft passes through the middle of the spiral blades, and a pulley is also fitted on the drive shaft. The pulleys are connected by a transmission belt. A drive motor is located at the end of the drive shaft near the pulley, and the drive shaft is further away from the pulley. One end of the motor is equipped with a reciprocating lead screw located inside the heating tube. Two intersecting threads are opened on the outer side of the reciprocating lead screw. A conveying roller is fitted on the outer side of the reciprocating lead screw through a threaded engagement. Several spiral protrusions that slide against the inner wall of the heating tube are evenly arranged on the outer side of the conveying roller. A limiting slider that slides against the heating tube is also provided on the outer side of the conveying roller. A circular linkage plate is fixedly fitted on the outer side of the end of the reciprocating lead screw away from the drive motor. The diameter of the linkage plate is larger than the outer diameter of the horizontal rigid tube. An extrusion unit and a transmission unit are provided on the linkage plate.

[0011] Preferably, the extrusion unit includes an extrusion sleeve, a connecting circular plate, a discharge sleeve, a pusher blade, an extrusion blade, an extrusion rod, and a spiral pressure block. The extrusion sleeve, which is fitted onto the horizontal rigid pipe, is rotatably mounted on the outer side of the linkage plate. The opening of the extrusion sleeve faces the drive motor. The end of the extrusion sleeve away from the drive motor is rotatably mounted with a connecting circular plate. The discharge sleeve, located outside the extrusion sleeve and the horizontal rigid pipe, is fixedly mounted on the outer side of the connecting circular plate. The end of the discharge sleeve near the drive motor is fixedly connected to the horizontal rigid pipe, and the opening of the discharge sleeve faces the end away from the drive motor.

[0012] The outer side of the extrusion sleeve is fitted with a pusher blade that fits against the inner wall of the discharge sleeve. The linkage plate is equipped with an extrusion blade located between the extrusion sleeve and the horizontal rigid pipe. The extrusion blade fits against the horizontal rigid pipe and the extrusion sleeve. Several extrusion rods are horizontally inserted through the extrusion blades and the linkage plate, and the extrusion rods are evenly distributed in a ring. Several spiral pressure blocks that slide against the horizontal rigid pipe are evenly arranged on the extrusion rods, and the corresponding spiral pressure blocks are located between the spacing of the extrusion blades. One end of the extrusion rod passes through the linkage plate and is connected to the transmission unit.

[0013] Preferably, the transmission unit includes a driven tooth block, a convex strip, a driving gear, a transmission gear, a gear rod, and an internal gear. The driven tooth block is sleeved on the end of the extrusion rod away from the drive motor. The inner wall of the extrusion sleeve is evenly provided with a plurality of convex strips that mesh with the driven tooth block. The convex strips are evenly distributed in a ring on the inner wall of the extrusion sleeve. The driving gear is fixedly sleeved on the outer side of the end of the reciprocating screw away from the linkage plate. The transmission gear meshes with the outer side of the driving gear. A gear rod that is rotatably connected to the connecting circular plate is fixedly passed through the middle of the transmission gear. An internal gear that meshes with the transmission gear is provided on the extrusion sleeve.

[0014] Preferably, the auxiliary mechanism further includes a second fixed cylinder, a filter unit, an air pump, an air inlet pipe, an exhaust pipe, an exhaust pipe, and an air inlet hole. The outer sides of the feed pipe and the vertical rigid pipe are jointly fitted with a second fixed cylinder corresponding to the first fixed cylinder. A filter unit is jointly arranged between the first fixed cylinder and the second fixed cylinder. An air pump is installed on the outer side of the discharge sleeve through a mounting base. The input end of the air pump is provided with an air inlet pipe that passes through the horizontal rigid pipe and the heating pipe in sequence. The output end of the air pump is respectively connected to the exhaust pipe, which is connected to the vertical rigid pipe and the second fixed cylinder. A plurality of air inlets are evenly opened on the feed pipe.

[0015] The preferred filtration unit includes an annular plate, a semi-annular plate, a limiting component, a semi-annular sleeve, and a filter box. Annular plates with a bent structure are provided inside fixed cylinder one and fixed cylinder two, and the annular plates are symmetrically distributed. Semi-annular plates are slidably fitted onto the horizontal folded edges of opposite sides of the annular plates. A limiting component is provided on the semi-annular plates. Semi-annular sleeves are slidably fitted onto opposite sides of the semi-annular plates. The semi-annular plates and semi-annular sleeves form a complete cylindrical shape. A filter box, which is detachably mounted inside the semi-annular sleeve and fits against the inner wall of the feed pipe, is provided inside the filter box. Several activated carbons are disposed inside the filter box.

[0016] Preferably, the limiting component includes a traction block and a limiting block. The traction blocks with a bent structure are symmetrically arranged on the semi-ring plate. The traction blocks are magnetic magnets. The corresponding traction blocks on the same side are connected by an inverted "mountain" shaped limiting block. The limiting block is made of metal that can be attracted by the magnet. The corresponding limiting blocks are respectively connected to the first fixed cylinder and the second fixed cylinder.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] I. This invention utilizes a mixing unit on the feeding hopper to stir and mix the material entering the hopper. The material then falls onto the conveying blades inside the feeding pipe. The conveying blades are indirectly driven by the mixing mechanism to transport the material in the feeding pipe. During the conveying process, the material is agitated by the conveying blades on the inner wall of the feeding pipe, thus achieving a pre-mixing effect. By driving the cylinder downwards to slide the pressure plate into the vertical rigid pipe, a sealing effect is achieved inside the vertical rigid pipe, thereby improving the material conveying efficiency.

[0019] II. This invention enables the drive shaft, pulley, spiral blades, reciprocating screw, and linkage plate to rotate via the output shaft of the drive motor. After the reciprocating screw rotates, the conveying roller can move laterally back and forth via the threads on the outer surface of the reciprocating screw. The conveying roller and the spiral protrusions on the conveying roller can push and squeeze the melted material away from the drive motor, thereby achieving the effect of squeezing and grinding the material. The rotation of the linkage plate can drive the squeezing unit and the transmission unit to further squeeze and grind the material, thereby improving the mixing effect of the material.

[0020] Third, the present invention can absorb and purify the irritating hot gas generated during the heating of materials through an auxiliary mechanism, so as to prevent the irritating gas from escaping and affecting the working environment. It can also transport the absorbed hot gas flow to the feeding mechanism to preheat the materials, thereby reducing the material processing time and improving the material mixing efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a structural schematic diagram from the first perspective of the present invention.

[0023] Figure 2 This is a schematic diagram of the feeding mechanism of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the hybrid unit of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the drive motor in this invention.

[0026] Figure 5 This is a first-view structural schematic diagram of the mixing mechanism of the present invention.

[0027] Figure 6 This is a schematic diagram of the mixing mechanism of the present invention from another perspective.

[0028] Figure 7 This is a first-view structural schematic diagram of the transmission unit of the present invention.

[0029] Figure 8 This is a structural schematic diagram of the transmission unit of the present invention from another perspective.

[0030] Figure 9 This is a schematic diagram of the auxiliary mechanism of the present invention.

[0031] Figure 10 This is a schematic diagram of the structure of the semi-ring sleeve of the present invention.

[0032] Figure 11This is a schematic diagram of the structure of the filter unit of the present invention.

[0033] Figure 12 This is a schematic diagram of the structure of the limiting component of the present invention.

[0034] In the diagram, 1 is the feed pipe; 10 is the feed funnel.

[0035] 2. Feeding mechanism; 20. Vertical rigid pipe; 21. Mixing unit; 210. Support column; 211. Support circular plate; 212. Servo motor; 213. Rotating shaft; 214. Stirring blade; 215. Stirring rod; 216. Scraper; 22. Support side plate; 23. Driven shaft; 24. Conveying blade; 25. Pulley; 26. Drive belt; 27. Drive cylinder; 28. Pressure plate;

[0036] 3. Internal mixing mechanism; 30. Horizontal rigid tube; 31. Heating tube; 32. Spiral blade; 33. Drive shaft; 34. Drive motor; 35. Reciprocating screw; 36. Conveying roller; 37. Spiral protrusion; 360. Limiting slider; 38. Linkage plate; 39. Extrusion unit; 390. Extrusion sleeve; 391. Connecting circular plate; 392. Discharge sleeve; 393. Pushing blade; 394. Extrusion blade; 395. Extrusion rod; 396. Spiral pressure block; 310. Transmission unit; 380. Driven gear block; 381. Protrusion; 382. Drive gear; 383. Transmission gear; 384. Gear rod; 385. Internal gear;

[0037] 4. Auxiliary mechanism; 40. Fixed cylinder one; 41. Fixed cylinder two; 42. Filter unit; 420. Annular plate; 421. Semi-annular plate; 422. Limiting component; 430. Traction block; 431. Limiting block; 423. Semi-annular sleeve; 424. Filter box; 43. Air pump; 44. Air inlet pipe; 45. Exhaust pipe one; 46. Exhaust pipe two; 47. Air inlet. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1 To be continued Figure 12 The embodiments of the present invention will be described in detail, but the present invention may be implemented in many different ways as defined and covered by the claims.

[0039] This application discloses a plastic molding internal mixing extruder. It is described that this plastic molding internal mixing extruder is mainly used in the process of internal mixing and extrusion of materials. Technically, it can achieve the effect of internal mixing and extruding the materials. Especially in the process of internal mixing plastics, it can repeatedly mix, extrude, and grind the molten materials, ensuring that the materials are fully mixed into the desired product. Furthermore, this plastic molding internal mixing extruder can also absorb and purify the irritating gases generated by the heated materials, preventing odors from affecting the working environment.

[0040] Example 1:

[0041] Reference Figure 1 and Figure 2 As shown, a plastic molding internal mixing extruder includes a feed pipe 1, a feed funnel 10, a feeding mechanism 2, a mixing mechanism 3, and an auxiliary mechanism 4. The feed pipe 1 is vertically connected to the feed funnel 10, which is used for feeding materials. The feeding mechanism 2 is jointly provided inside the feed funnel 10 and the feed pipe 1. The feeding mechanism 2 includes a vertical rigid pipe 20 connected to the feed pipe 1 and is used for conveying and premixing materials. The lower end of the vertical rigid pipe 20 is provided with the mixing mechanism 3, which includes a horizontal rigid pipe 30 connected to the feeding mechanism 2 and is used for further mixing and extruding materials. The feeding mechanism 2 and the mixing mechanism 3 are also connected to the auxiliary mechanism 4. The auxiliary mechanism 4 includes a fixed cylinder 40 sleeved on the outer side of the feed pipe 1 and is used to purify the irritating gases generated when heating materials and to preheat unheated materials.

[0042] In the specific implementation process, the feeding mechanism 2 can premix the conveyed materials and transport them to the mixing mechanism 3 for mixing and mixing. The mixing mechanism 3 can melt and mix the materials. During this process, the hot air generated when the plastic is heated and melted can be extracted and purified by the auxiliary mechanism 4, and the hot air can be transported to the feeding mechanism 2 to preheat the materials in advance, thereby reducing the processing time of the materials and improving the mixing efficiency of the materials.

[0043] Reference Figure 2As shown, the feeding mechanism 2 is used for conveying and premixing materials. Specifically, the feeding mechanism 2 includes a vertical rigid pipe 20, a mixing unit 21, a supporting side plate 22, a driven shaft 23, conveying blades 24, a pulley 25, a transmission belt 26, a drive cylinder 27, and a pressure plate 28. The mixing unit 21 is provided on the feeding funnel 10, and the mixing unit 21 is used to mix the materials. The end of the feeding pipe 1 away from the vertical rigid pipe 20 is provided with a supporting side plate 22. The driven shaft 23 is rotatably passed through the middle of the supporting side plate 22. The outer surface of the driven shaft 23 is provided with a spiral conveying blade 24 that slides and fits against the inner wall of the feeding pipe 1. The conveying blade 24 is used to convey and mix the materials. One end of the conveying blade 24 is located at... Inside the vertical rigid tube 20, a driven shaft 23 is horizontally inserted through the middle of the conveying blade 24. The rotation of the driven shaft 23 will drive the conveying blade 24 to rotate. A pulley 25 is fitted on the outer surface of the end of the driven shaft 23 away from the vertical rigid tube 20. The rotation of the pulley 25 will drive the driven shaft 23 to rotate. The pulley 25 is connected to the mixing mechanism 3 through a transmission belt 26. A drive cylinder 27 is vertically mounted on the upper end of the vertical rigid tube 20 through a mounting bracket. A pressure plate 28 corresponding to the inner diameter of the vertical rigid tube 20 is provided at the output end of the drive cylinder 27. The movement of the output end of the drive cylinder 27 will drive the pressure plate 28 to move vertically. After the pressure plate 28 slides into the vertical rigid tube 20, it can close the end of the vertical rigid tube 20.

[0044] In the specific implementation process, the mixing unit 21 set on the feeding hopper 10 can stir and mix the material entering the feeding hopper 10. Then, the material falls onto the conveying blades 24 in the feeding pipe 1. The conveying blades 24 are indirectly driven by the mixing mechanism 3 to carry the material in the feeding pipe 1. During the conveying process of the conveying blades 24, the material will be pushed by the conveying blades 24 on the inner wall of the feeding pipe 1, thereby achieving the effect of pre-mixing the material. By driving the cylinder 27 downward to drive the pressure plate 28 to slide into the vertical rigid pipe 20, a sealing effect can be formed in the vertical rigid pipe 20, and the material conveying efficiency can be improved.

[0045] Reference Figure 3As shown, this is the mixing unit 21 used to mix the materials in the feed hopper 10. Specifically, the mixing unit 21 includes support columns 210, support circular plates 211, servo motors 212, rotating shafts 213, stirring blades 214, stirring rods 215, and scrapers 216. Multiple support columns 210 are evenly arranged at the upper end of the feed hopper 10, and a support circular plate 211 is commonly arranged at the upper end of each support column 210. The support circular plate 211 is used for support and installation. A servo motor 212 is vertically mounted on the support circular plate 211 via a motor mount. A through-hole is provided at the lower end of the output shaft of the servo motor 212. A rotating shaft 213 passes through the supporting circular plate 211. A stirring blade 214 is provided on the outer side of the rotating shaft 213 and is fitted with the inner wall of the feed hopper 10. The rotation of the output shaft of the servo motor 212 can drive the rotating shaft 213 and the stirring blade 214 to rotate. A stirring rod 215 is horizontally inserted through the outer side of the rotating shaft 213. The rotation of the rotating shaft 213 will drive the stirring rod 215 to rotate. Both ends of the stirring rod 215 are provided with scrapers 216 that are fitted with the inner wall of the feed hopper 10. The rotation of the stirring rod 215 can drive the scrapers 216 to slide on the inner wall of the feed hopper 10.

[0046] In the specific implementation process, the output shaft of the servo motor 212 rotates to drive the rotating shaft 213, stirring blade 214, stirring rod 215, and scraper 216 to rotate. The rotation of the stirring rod 215 and scraper 216 can drive the material in the feed hopper 10 to move, thereby preventing material blockage and mixing the material. The rotation of the stirring blade 214 can drive the material to be conveyed into the feed pipe 1, thereby achieving the effect of pre-mixing the material.

[0047] Example 2:

[0048] Reference Figures 4 to 6As shown, based on Embodiment 1, in order to further mix, grind, and extrude the conveyed material, a mixing mechanism 3 for mixing, grinding, and extruding the material is provided. Specifically, the mixing mechanism 3 includes a horizontal rigid tube 30, a heating tube 31, a spiral blade 32, a drive shaft 33, a drive motor 34, a reciprocating screw 35, a conveying roller 36, a spiral protrusion 37, a limiting slider 360, a linkage plate 38, an extrusion unit 39, and a transmission unit 310. The horizontal rigid tube 30 is fixedly installed at the lower end of the vertical rigid tube 20 and connected to it. A heating tube 31 is provided on the inner wall of the horizontal rigid tube 30. The heating tube 31 is an electric heating tube 31, which can heat the material inside the tube. A spiral blade 32 is slidably fitted onto the inner wall of heating tube 31, and the spiral blade 32 is used to drive the material to be conveyed. A drive shaft 33 is inserted through the middle of the spiral blade 32, and the rotation of the drive shaft 33 will drive the spiral blade 32 to rotate. A pulley 25 is also sleeved on the drive shaft 33, and the rotation of the drive shaft 33 will drive the pulley 25 to rotate. The pulleys 25 are connected by a transmission belt 26. A drive motor 34 is set at the end of the drive shaft 33 near the pulley 25, and the rotation of the output shaft of the drive motor 34 can drive the drive shaft 33 to rotate. A reciprocating screw 35 located inside the heating tube 31 is set at the end of the drive shaft 33 away from the drive motor 34, and the rotation of the drive shaft 33 can drive the reciprocating screw to rotate.

[0049] Furthermore, the reciprocating screw 35 has two intersecting threads on its outer surface. A conveying roller 36 is fitted onto the outer surface of the reciprocating screw 35 via these threads. The conveying roller 36 can reciprocate laterally through the threads on the surface of the reciprocating screw 35 after it rotates. Several spiral protrusions 37 are evenly distributed on the outer surface of the conveying roller 36, slidingly engaging with the inner wall of the heating tube 31. These spiral protrusions 37 are used to squeeze and grind the material located between the inner wall of the heating tube 31 and the conveying roller 36. A limiting slider 360, slidably connected to the heating tube 31, is also provided on the outer surface of the conveying roller 36. 360 is used to limit the movement path of the conveying roller 36 and prevent it from rotating; a circular linkage plate 38 is fixedly sleeved on the outer side of the end of the reciprocating screw 35 away from the drive motor 34. The rotation of the reciprocating screw 35 will drive the linkage plate 38 to rotate; the diameter of the linkage plate 38 is larger than the outer diameter of the horizontal rigid tube 30. The linkage plate 38 is equipped with an extrusion unit 39 and a transmission unit 310. The extrusion unit 39 is used to further extrude and grind the material, and the transmission unit 310 is used to drive the extrusion unit 39 to rotate in the opposite direction, thereby achieving a better extrusion effect, so that the material can be fully mixed and the mixing quality of the material can be improved.

[0050] It should be noted that there needs to be a certain gap between the linkage plate 38 and the horizontal rigid tube 30 and the heating tube 31 so that the material can be squeezed out by the conveying roller 36 into the extrusion unit 39.

[0051] In the specific implementation process, the rotation of the output shaft of the drive motor 34 can drive the drive shaft 33, pulley 25, spiral blade 32, reciprocating screw 35 and linkage plate 38 to rotate. The rotation of pulley 25 can drive the corresponding pulley 25, driven shaft 23 and conveying blade 24 to rotate through the transmission belt 26. The rotation of conveying blade 24 can drive the material in the feed pipe 1 to be conveyed and mixed. The rotation of spiral blade 32 conveys the material to the heating pipe 31 for heating and melting. After the reciprocating screw 35 rotates, the conveying roller 36 can move laterally back and forth through the thread on the outer surface of the reciprocating screw 35. The conveying roller 36 and the spiral protrusion 37 on the conveying roller 36 can push and squeeze the melted material away from the drive motor 34, thereby achieving the effect of squeezing and grinding the material. The rotation of reciprocating screw 35 can drive the squeezing unit 39 and the transmission unit 310 to further squeeze and grind the material, thereby improving the mixing effect of the material.

[0052] Reference Figure 6 and Figure 7As shown, this is the extrusion unit 39 used to further extrude the material. Specifically, the extrusion unit 39 includes an extrusion sleeve 390, a connecting circular plate 391, a discharge sleeve 392, a pusher blade 393, an extrusion blade 394, an extrusion rod 395, and a spiral pressure block 396. The extrusion sleeve 390, which is rotatably mounted on the outer side of the linkage plate 38 and is fitted onto the horizontal rigid pipe 30, has its opening facing the drive motor 34. The extrusion sleeve 390 is used to extrude the material and drive the extrusion unit 396. The material to be discharged is discharged; a connecting circular plate 391 is rotatably provided at the end of the extrusion sleeve 390 away from the drive motor 34, and a discharge sleeve 392 located outside the extrusion sleeve 390 and the horizontal rigid pipe 30 is fixedly sleeved on the outer surface of the connecting circular plate 391. The opening of the discharge sleeve 392 faces the end away from the drive motor 34, and the discharge sleeve 392 is used to discharge material; a pusher blade 393 that fits against the inner wall of the discharge sleeve 392 is sleeved on the outer side of the extrusion sleeve 390. The extrusion sleeve 390 rotates The kinetic energy drives the pusher blade 393 to rotate; the linkage plate 38, the extrusion sleeve 390, and the horizontal rigid pipe 30 are all connected by an extrusion blade 394, and the rotation of the linkage plate 38 will drive the extrusion blade 394 to rotate; the extrusion blade 394 is in contact with the outer side of the horizontal rigid pipe 30 and the inner wall of the extrusion sleeve 390, and several extrusion rods 395 are horizontally inserted on the extrusion blade 394 and the linkage plate 38, and the rotation of the linkage plate 38 will drive all the extrusion rods 395 to rotate. The extrusion rods 395 are evenly distributed in a ring. Multiple spiral pressure blocks 396 that slide and fit against the horizontal rigid tube 30 are evenly arranged on the extrusion rods 395. The rotation of the extrusion rods 395 will drive the corresponding spiral pressure blocks 396 to rotate. The corresponding spiral pressure blocks 396 are located between the spacing of the extrusion blades 394. One end of the extrusion rod 395 passes through the linkage plate 38 and is connected to the transmission unit 310. The rotation of the transmission unit 310 will drive the extrusion rods 395 to rotate.

[0053] In the specific implementation process, the rotation of the linkage plate 38 will drive the extrusion blades 394, the extrusion rod 395, and the spiral pressure block 396 to rotate. It can also drive the extrusion sleeve 390, the extrusion rod 395, and the spiral pressure block 396 to rotate in the opposite direction through the transmission unit 310. The rotation of the extrusion blades 394 can drive the material to be conveyed. After the extrusion sleeve 390, the extrusion rod 395, and the spiral pressure block 396 rotate in the opposite direction, they can further extrude and grind the material, so that the material can be fully extruded and mixed, thereby improving the mixing effect of the material. The rotation of the extrusion sleeve 390 can also drive the pusher blades 393 to rotate, thereby achieving the effect of discharging the material located between the extrusion sleeve 390 and the discharge sleeve 392.

[0054] Reference Figure 7 and Figure 8As shown, this is the transmission unit 310 used to drive the extrusion sleeve 390, the extrusion rod 395, and the spiral pressing block 396 to rotate in opposite directions. Specifically, the transmission unit 310 includes a driven tooth block 380, a protrusion 381, a driving gear 382, ​​a transmission gear 383, and a gear rod 384. The driven tooth block 380 is sleeved on the end of the extrusion rod 395 away from the drive motor 34. The rotation of the driven tooth block 380 can drive the extrusion rod 395 to rotate. The extrusion sleeve... The inner wall of the extrusion sleeve 390 is provided with multiple protrusions 381 that mesh with the driven tooth block 380. The rotation of the extrusion sleeve 390 will drive the protrusions 381 to rotate, and the rotation of the protrusions 381 will drive the driven tooth block 380 to rotate. The multiple protrusions 381 are evenly distributed in a ring on the inner wall of the extrusion sleeve 390. The drive gear 382 is fixedly sleeved on the outer side of the reciprocating screw 35 away from the linkage plate 38. The rotation of the reciprocating screw 35 will drive the drive gear 382 to rotate.

[0055] Furthermore, a drive gear 383 meshes with the outer surface of the drive gear 382, ​​and the rotation of the drive gear 382 will drive the drive gear 383 to rotate; a gear rod 384 is fixedly inserted through the middle of the drive gear 383 and is rotatably connected to the connecting circular plate 391. The gear rod 384 is used to support the drive gear 383, and the rotation of the drive gear 383 will drive the gear rod 384 to rotate; an internal gear 385 is provided on the extrusion sleeve 390, which meshes with the drive gear 383. The rotation of the drive gear 383 will drive the meshing internal gear 385 to rotate, and the rotation of the internal gear 385 will drive the extrusion sleeve 390 to rotate.

[0056] In the specific implementation process, the rotation of the reciprocating screw 35 will drive the drive gear 382, ​​transmission gear 383, gear rod 384, internal gear 385 and extrusion sleeve 390 to rotate. The rotation of the extrusion sleeve 390 will drive the pusher blade 393, protrusion 381, driven tooth block 380, extrusion round rod 395 and spiral pressure block 396 to rotate. The rotation of the extrusion round rod 395 and spiral pressure block 396 can extrude and grind the material located between the spiral spacing of the extrusion blade 394, realize the mixing and extrusion of the material, and further improve the mixing effect of the material.

[0057] Example 3:

[0058] Reference Figures 9 to 11As shown, based on Embodiment 1 and Embodiment 2, in order to improve the efficiency of material smelting and eliminate the irritating gases generated during material smelting, an auxiliary mechanism 4 for absorbing the irritating gases during material smelting is provided; specifically, the auxiliary mechanism 4 includes a first fixed cylinder 40, a second fixed cylinder 41, a filter unit 42, an air pump 43, an air inlet pipe 44, a first exhaust pipe 45, a second exhaust pipe 46, and an air inlet 47. The outer surfaces of the feed pipe 1 and the vertical rigid pipe 20 are jointly fitted with a second fixed cylinder 41 corresponding to the first fixed cylinder 40. A filter unit 42 is provided between the 40 and the fixed cylinder 41. The filter unit 42 is used to filter and purify the gas after the material is heated. An air pump 43 is installed on the outer side of the discharge sleeve 392 through the mounting base. The input end of the air pump 43 is provided with an air inlet pipe 44 that passes through the horizontal rigid pipe 30 and the heating pipe 31 in sequence. The air inlet pipe 44 is used to guide the gas absorption path. The output end of the air pump 43 is connected to an exhaust pipe 45 and an exhaust pipe 46 that are connected to the vertical rigid pipe 20 and the fixed cylinder 41, respectively. Several air inlets 47 are evenly opened on the feed pipe 1.

[0059] In the specific implementation process, the filter unit 42 is first installed between the fixed cylinder 40 and the fixed cylinder 41. At this time, the filter unit 42, the fixed cylinder 40 and the fixed cylinder 41 can form a sealed cavity. Then, the irritating hot gas generated after heating in the heating tube 31 can be extracted by the air pump 43 and the air inlet pipe 44. At the same time, the extracted heated gas can be discharged into the vertical rigid pipe 20, the fixed cylinder 40 and the fixed cylinder 41 by the air pump 43, the exhaust pipe 45 and the exhaust pipe 46. After the heated gas is discharged into the vertical rigid pipe 20, the pressure block is moved up and down in the vertical rigid pipe 20 by the drive cylinder 27. This can achieve the effect of adjusting the air pressure in the vertical rigid pipe 20. At the same time, the pressurized hot gas can preheat the material in the vertical rigid pipe 20, thereby improving the material mixing efficiency.

[0060] When heated gas is discharged into the cavity between filter unit 42, fixed cylinder 40 and fixed cylinder 41 through exhaust pipe 2 46, the gas can flow into feed pipe 1 through air inlet 47, thereby preheating the material conveyed in feed pipe 1 and improving the material mixing efficiency. At the same time, the heated gas is also purified by filter unit 42 when it flows in the cavity, thereby eliminating irritating gas and reducing the impact of irritating gas emissions on the working environment.

[0061] Reference Figure 11 and Figure 12As shown, it is the filtering unit 42 for purifying the irritating gas generated after heating. Specifically, the filtering unit 42 includes an annular plate 420, a semi-annular plate 421, a limiting component 422, a semi-annular sleeve 423 and a filtering box 424. An annular plate 420 with a bent structure is arranged in the fixed cylinder one 40 and the fixed cylinder two 41, and the annular plate 420 is symmetrically distributed. Horizontal flanges on the opposite sides of the annular plate 420 are both slidably sleeved with semi-annular plates 421. A limiting component 422 is arranged on the semi-annular plate 421, and the limiting component 422 is used to limit the semi-annular plate 421. A semi-annular sleeve 423 is jointly slidably sleeved between the opposite sides of the semi-annular plate 421, and the semi-annular sleeve 423 is used to limit the sliding path of the semi-annular plate 421. The semi-annular plate 421 and the semi-annular sleeve 423 can be spliced into a complete circular ring. A filtering box 424 that fits the inner wall of the feed pipe 1 is detachably arranged in the semi-annular sleeve 423. A number of activated carbons are arranged in the filtering box 424, and the activated carbons are used to adsorb impurities in the gas.

[0062] In the specific implementation process, the air pump 43 discharges the irritating gas generated after heating into the cavity between the annular plate 420, the semi-annular plate 421, the semi-annular sleeve 423, the fixed cylinder one 40 and the fixed cylinder two 41 through the exhaust pipe two 46. When the gas passes through the filtering box 424, the impurities in the gas will be adsorbed by the activated carbons in the filtering box 424, so as to achieve the effect of eliminating and purifying the irritating gas. At the same time, when the heated gas fills the cavity between the annular plate 420, the semi-annular plate 421, the semi-annular sleeve 423, the fixed cylinder one 40 and the fixed cylinder two 41, it can also heat the activated carbons in the filtering box 424 to a certain extent, thereby increasing the effect of the activated carbons adsorbing impurities in the gas.

[0063] Refer to Figure 12 As shown, it is the limiting component 422 for limiting and installing the semi-annular plate 421. Specifically, the limiting component 422 includes a traction block 430 and a limiting block 431. Bent traction blocks 430 are symmetrically arranged on the semi-annular plate 421, and the movement of the traction block 430 can带动 the corresponding semi-annular plate 421 to move horizontally. The traction block 430 is a magnet with magnetism. An inverted "mountain"-shaped limiting block 431 is jointly penetrated between the corresponding traction blocks 430 on the same side, and the limiting block 431 is used to limit the traction block 430. The limiting block 431 is made of a metal material that can be attracted by the magnet, and the corresponding limiting blocks 431 are respectively penetrated on the fixed cylinder one 40 and the fixed cylinder two 41.

[0064] In the specific implementation process, the traction block 430 can drive the corresponding semi-ring plate 421 to slide within the semi-ring sleeve 423. When the semi-ring plate 421 is sleeved on the corresponding side annular plate 420, the corresponding limiting block 431 slides into the traction block 430, the fixing cylinder one 40, and the fixing cylinder two 41 respectively. At this time, the traction block 430, which has magnetic adsorption capability, can adsorb the corresponding limiting block 431, thereby preventing the corresponding limiting block 431 from falling off. After the limiting block 431 slides in, it is held in place by the corresponding... After the traction block 430 adsorbs, it can limit the corresponding traction block 430 to prevent the corresponding traction block 430 from rotating or shifting. When it is necessary to replace the activated carbon in the filter box 424, simply slide the corresponding limiting block 431 out from between the traction blocks 430, and then pull the corresponding traction block 430 and the semi-ring plate 421 towards the direction of the corresponding semi-ring sleeve 423. The semi-ring plate 421, the semi-ring sleeve 423 and the filter box 424 can then be removed for replacement.

[0065] During operation: First, the material enters through the feed hopper 10. The mixing unit 21 can stir and mix the material. The mixing unit 21 will transport the material to the feed pipe 1. After the feeding mechanism 2 is driven to operate, it can drive the material in the feed pipe 1 to stir and mix, premix the material, and transport the material to the mixing mechanism 3 for mixing and extrusion.

[0066] The second step: The mixing mechanism 3 can heat and melt the premixed material, and transport the molten material and extrude and grind it multiple times. The extrusion unit 39 and the transmission unit 310 can extrude and grind the material again to improve the mixing effect and ensure that the material is fully mixed.

[0067] The third step: The auxiliary mechanism 4 can absorb the irritating gas after the material in the heating tube 31 is heated and output it to the feeding mechanism 2, so that the heated gas can preheat the material conveyed in the feeding mechanism 2, thereby improving the material mixing efficiency. At the same time, the auxiliary mechanism 4 can also filter and purify the absorbed irritating gas to avoid the problem of irritating gas affecting the working environment.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0069] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plastic molding internal mixing extruder, comprising a horizontally arranged feed pipe (1), characterized in that: The feed pipe (1) is vertically connected to a feed funnel (10). A feeding mechanism (2) is provided in both the feed funnel (10) and the feed pipe (1). The feeding mechanism (2) includes a vertical rigid pipe (20) connected to the feed pipe (1). A mixing mechanism (3) is provided at the lower end of the vertical rigid pipe (20). The mixing mechanism (3) includes a horizontal rigid pipe (30) connected to the feeding mechanism (2). An auxiliary mechanism (4) is also connected between the feeding mechanism (2) and the mixing mechanism (3). The auxiliary mechanism (4) includes a fixed cylinder (40) sleeved on the outer side of the feed pipe (1). The feeding mechanism (2) further includes a mixing unit (21) set on the feeding hopper (10). A support side plate (22) is provided at the end of the feeding pipe (1) away from the vertical hard pipe (20). A driven shaft (23) is rotatably passed through the middle of the support side plate (22). A conveying blade (24) is provided on the outer side of the driven shaft (23) and slides against the inner wall of the feeding pipe (1) in a spiral shape. One end of the conveying blade (24) is located inside the vertical hard pipe (20). A pulley (25) is sleeved on the outer side of the end of the driven shaft (23) away from the vertical hard pipe (20). The pulley (25) is connected to the mixing mechanism (3) through a transmission belt (26). A drive cylinder (27) is vertically installed at the upper end of the vertical hard pipe (20) through a mounting bracket. A pressure plate (28) corresponding to the inner diameter of the vertical hard pipe (20) is provided at the output end of the drive cylinder (27). The internal mixing mechanism (3) further includes a heating tube (31), a spiral blade (32), a drive shaft (33), a drive motor (34), a reciprocating screw (35), a conveying roller (36), a spiral protrusion (37), a limiting slider (360), a linkage plate (38), an extrusion unit (39), and a transmission unit (310). A horizontal rigid tube (30) is fixedly installed at the lower end of a vertical rigid tube (20) and connected to it. A heating tube (31) is provided on the inner wall of the horizontal rigid tube (30). A spiral blade (32) is slidably fitted on the inner wall of the heating tube (31). A drive shaft (33) is passed through the middle of the spiral blade (32). A pulley (25) is also fitted on the drive shaft (33). The pulleys (25) are connected by a transmission belt (26). A drive motor (34) is provided at one end of the drive shaft (33) near the pulley (25). 4) A reciprocating screw (35) located inside the heating tube (31) is provided at the end of the drive shaft (33) away from the drive motor (34). Two intersecting threads are provided on the outer side of the reciprocating screw (35). A conveying roller (36) is fitted on the outer side of the reciprocating screw (35) through threaded engagement. Several spiral protrusions (37) that slide against the inner wall of the heating tube (31) are evenly provided on the outer side of the conveying roller (36). A limiting slider (360) that slides against the heating tube (31) is also provided on the outer side of the conveying roller (36). A circular linkage plate (38) is fixedly fitted on the outer side of the end of the reciprocating screw (35) away from the drive motor (34). The diameter of the linkage plate (38) is larger than the outer diameter of the horizontal hard tube (30). An extrusion unit (39) and a transmission unit (310) are provided on the linkage plate (38).

2. The plastic molding internal mixing extruder according to claim 1, characterized in that: The mixing unit (21) includes a support column (210), a support circular plate (211), a servo motor (212), a rotating shaft (213), stirring blades (214), a stirring rod (215), and a scraper (216). Multiple support columns (210) are evenly arranged at the upper end of the feed hopper (10). The support circular plate (211) is arranged at the upper end of the support columns (210). A servo motor (212) is vertically arranged on the support circular plate (211) through a motor seat. A rotating shaft (213) that passes through the support circular plate (211) is arranged at the lower end of the output shaft of the servo motor (212). A stirring blade (214) that fits against the inner wall of the feed hopper (10) is arranged on the outer side of the rotating shaft (213). A stirring rod (215) is horizontally inserted through the outer side of the rotating shaft (213). A scraper (216) that fits against the inner wall of the feed hopper (10) is arranged at both ends of the stirring rod (215).

3. The plastic molding internal mixing extruder according to claim 1, characterized in that: The extrusion unit (39) includes an extrusion sleeve (390), a connecting circular plate (391), a discharge sleeve (392), a pusher blade (393), an extrusion blade (394), an extrusion rod (395), and a spiral pressure block (396). The outer side of the linkage plate (38) is rotatably fitted with an extrusion sleeve (390) that is fitted on a horizontal hard tube (30). The opening of the extrusion sleeve (390) faces the drive motor (34). The end of the extrusion sleeve (390) away from the drive motor (34) is rotatably fitted with a connecting circular plate (391). The outer side of the connecting circular plate (391) is fixedly fitted with a discharge sleeve (392) located outside the extrusion sleeve (390) and the horizontal hard tube (30). The end of the discharge sleeve (392) close to the drive motor (34) is fixedly connected to the horizontal hard tube (30). The opening of the discharge sleeve (392) faces the end away from the drive motor (34). The outer side of the extrusion sleeve (390) is fitted with a pusher blade (393) that fits against the inner wall of the discharge sleeve (392). The linkage plate (38) is provided with an extrusion blade (394) located between the extrusion sleeve (390) and the horizontal hard tube (30). The extrusion blade (394) fits against the horizontal hard tube (30) and the extrusion sleeve (390). Several extrusion rods (395) are horizontally inserted and rotated together on the extrusion blades (394) and the linkage plate (38). The extrusion rods (395) are evenly distributed in a ring. Several spiral pressure blocks (396) that slide against the horizontal hard tube (30) are evenly arranged on the extrusion rods (395). The corresponding spiral pressure blocks (396) are located between the spacing of the extrusion blades (394). One end of the extrusion rod (395) passes through the linkage plate (38) and is connected to the transmission unit (310).

4. The plastic molding internal mixing extruder according to claim 3, characterized in that: The transmission unit (310) includes a driven tooth block (380), a rib (381), a drive gear (382), a transmission gear (383), a gear rod (384), and an internal gear (385). The driven tooth block (380) is sleeved on the end of the extrusion rod (395) away from the drive motor (34). The inner wall of the extrusion sleeve (390) is uniformly provided with a plurality of ribs (381) that mesh with the driven tooth block (380). The ribs (381) are annular and uniform. On the inner wall of the extrusion sleeve (390), a drive gear (382) is fixedly mounted on the outer side of the linkage plate (38) away from the reciprocating screw (35). A transmission gear (383) meshes with the outer side of the drive gear (382). A gear rod (384) that is rotatably connected to the connecting circular plate (391) is fixedly passed through the middle of the transmission gear (383). An internal gear (385) that meshes with the transmission gear (383) is provided on the extrusion sleeve (390).

5. A plastic molding internal mixing extruder according to claim 3, characterized in that: The auxiliary mechanism (4) further includes a fixed cylinder two (41), a filter unit (42), an air pump (43), an air inlet pipe (44), an exhaust pipe one (45), an exhaust pipe two (46), and an air inlet hole (47). The outer side of the feed pipe (1) and the vertical hard pipe (20) are fitted with a fixed cylinder two (41) corresponding to the fixed cylinder one (40). A filter unit (42) is provided between the fixed cylinder one (40) and the fixed cylinder two (41). An air pump (43) is installed on the outer side of the discharge sleeve (392) through a mounting seat. An air inlet pipe (44) is provided at the input end of the air pump (43) and passes through the horizontal hard pipe (30) and the heating pipe (31) in sequence. The output end of the air pump (43) is connected to the exhaust pipe one (45) and the exhaust pipe two (46) connected to the vertical hard pipe (20) and the fixed cylinder two (41), respectively. Several air inlets (47) are evenly opened on the feed pipe (1).

6. A plastic molding internal mixing extruder according to claim 5, characterized in that: The filter unit (42) includes an annular plate (420), a semi-annular plate (421), a limiting component (422), a semi-annular sleeve (423), and a filter box (424). The fixed cylinder one (40) and the fixed cylinder two (41) are provided with an annular plate (420) with a bent structure. The annular plates (420) are symmetrically distributed. The horizontal folded edges on opposite sides of the annular plates (420) are slidably fitted with semi-annular plates (421). The semi-annular plates (421) are provided with limiting components (422). The semi-annular sleeves (423) are slidably fitted between opposite sides of the semi-annular plates (421). The semi-annular plates (421) and the semi-annular sleeves (423) form a complete cylindrical shape. The filter box (424) is detachably provided inside the semi-annular sleeve (423) and is fitted with the inner wall of the feed pipe (1). The filter box (424) is provided with a number of activated carbons.

7. A plastic molding internal mixing extruder according to claim 6, characterized in that: The limiting component (422) includes a traction block (430) and a limiting block (431). The traction blocks (430) with bent structures are symmetrically arranged on the semi-ring plate (421). The traction blocks (430) are magnets. The corresponding traction blocks (430) on the same side are connected by an inverted "mountain" shaped limiting block (431). The limiting block (431) is made of metal that can be attracted by the magnet. The corresponding limiting blocks (431) are respectively connected to the first fixed cylinder (40) and the second fixed cylinder (41).

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