CN110871529A

CN110871529A - Plastic particle forming machine

Info

Publication number: CN110871529A
Application number: CN201911183205.7A
Authority: CN
Inventors: 陆永柱; 祝磊; 张继美
Original assignee: Luan Fengkaini Electromechanical Technology Co Ltd
Current assignee: Luan Fengkaini Electromechanical Technology Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-03-10

Abstract

The invention provides a plastic particle forming machine, which comprises a main frame body, wherein a raw material melting device, a rotary die injection molding device and a power device are arranged on the main frame body, the raw material melting device is used for heating and melting plastic raw materials and filtering impurities of molten plastic and then conveying the molten plastic to the rotary die injection molding device, the power device is used for providing operation power for the rotary die injection molding device, the rotary die injection molding device comprises a rotary die injection molding mechanism and an injection molding mechanism, the injection molding mechanism is used for receiving the molten plastic conveyed by the conveying mechanism and injecting the molten plastic into the rotary die injection molding mechanism, and the rotary die injection molding mechanism is used for processing the molten plastic into a spherical plastic particle structure; the spherical plastic particles are obtained by sequentially heating and melting plastic raw materials, filtering impurities, performing injection molding, performing pressure injection cooling molding and blowing discharge treatment, and the obtained spherical plastic particles are small in spherical diameter error, high in quality and more convenient for subsequent sale.

Description

Plastic particle forming machine

Technical Field

The invention relates to the field of plastic processing, in particular to spherical plastic particle granulation equipment.

Background

The traditional method for manufacturing spherical plastic particles adopts a suspension polymerization production process in the plastic polymerization manufacturing stage to directly produce the spherical plastic particles, the method can be completed only in the stage of producing the brand new plastic particles by taking plastic raw material monomer molecules as raw materials and taking the suspension polymerization process method as the production method, and for manufacturing the spherical plastic particles by taking the molded traditional non-spherical plastic particles or particles processed by recycling plastics as raw materials, the processing methods are two types: a hot-cutting air-cooling rounding process and a hot-cutting water-cooling centrifugal process are disclosed, wherein the method comprises the steps of melting plastic particles, extruding the melted plastic particles from a die head with a certain aperture by an extruder, cutting the plastic particles at the outlet of the die head by a high-speed cutter, and cooling the cut plastic particles by air or water; the air-cooled particles are in a hot soft state, fall off through an air pipe after being discharged, and are rounded by utilizing the natural force of the fall-off; the invention provides a spherical plastic particle granulating device which sequentially carries out heating melting, impurity filtering, injection molding, pressure injection cooling molding and blowing discharging treatment on plastic raw materials to obtain spherical plastic particles, wherein the spherical plastic particles obtained have small spherical diameter error and high quality and are more convenient for subsequent sale.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide spherical plastic particle granulation equipment which sequentially carries out heating melting, impurity filtering, injection molding, pressure injection cooling molding and blowing discharging treatment on plastic raw materials to obtain spherical plastic particles.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

The plastic particle forming machine comprises a main frame body, wherein a raw material melting device, a rotary die injection molding device and a power device are arranged on the main frame body, the raw material melting device is used for heating and melting plastic raw materials, filtering impurities of molten plastic and then conveying the molten plastic to the rotary die injection molding device, the rotary die injection molding device is used for receiving the molten plastic and processing the molten plastic into spherical plastic particles, and the power device is used for providing operation power for the rotary die injection molding device.

The technical scheme is further improved and optimized.

The raw material melting device comprises a melting tank for heating and melting plastic raw materials, a filtering mechanism for receiving the molten plastic heated and melted by the melting tank and filtering impurities of the molten plastic, and a rotary die injection molding device for receiving the molten plastic filtered by the filtering mechanism and conveying the molten plastic into which the impurities are filtered;

the melting tank is fixed on the main frame body, and the bottom of the melting tank is communicated with a discharge pipeline;

the conveying mechanism is positioned below the melting tank and comprises a conveying motor, a conveying pipeline and a pushing screw rod, the conveying pipeline is horizontally fixed on the main frame body, a conveying end cover is arranged at one pipe orifice of the conveying pipeline in a matched mode, a connecting support is arranged in the other pipe orifice of the conveying pipeline, a conveying joint is further coaxially arranged at the pipe orifice of the conveying pipeline, which is provided with the connecting support, in a matched mode, a third fixing joint is connected and communicated with the outside of the conveying pipeline, the third fixing joint is vertically arranged and positioned above the conveying pipeline and close to the conveying end cover, and a heating element for heating the third fixing joint is arranged outside the conveying pipeline in a matched mode;

the pushing screw rod and the conveying pipeline are coaxially arranged, the power output end of the pushing screw rod is movably connected with the connecting support, the power input end of the pushing screw rod penetrates through the conveying pipeline and the conveying end cover and is positioned outside the conveying pipeline, the pushing screw rod can axially rotate around the pushing screw rod, and the pushing screw rod rotates and pulls molten plastic to convey towards the conveying joint;

an output shaft of the conveying motor is axially parallel to the axial direction of the conveying pipeline and is fixed on the main frame body, a power connecting piece II is arranged between the power output end of the conveying motor and the power input end of the pushing screw rod and is in power connection transmission through the power connecting piece II, and the power connecting piece II is in a belt transmission structure;

the filtering mechanism is arranged between the melting tank and the conveying mechanism, and comprises a filtering pipeline and a packing auger, the filtering pipeline is obliquely fixed on the main frame body, the openings of the two pipelines are respectively matched and provided with a fixed end cover, and the outer circular surface of the filtering pipeline is connected and communicated with a first fixed connector, a second fixed connector and a impurity removing connector;

the first fixed joint nozzle and the second fixed joint nozzle are vertically arranged and are close to a lower pipe opening of the filtering pipeline, the first fixed joint nozzle and the second fixed joint nozzle are vertically arranged and are positioned right above the second fixed joint nozzle, the first fixed joint nozzle is fixedly connected and communicated with a discharge pipeline arranged at the bottom of the melting tank, a metal filter screen is arranged at the communicated position of the second fixed joint nozzle and the filtering pipeline in a matching manner, and the second fixed joint nozzle is fixedly connected and communicated with the third fixed joint nozzle;

the impurity discharging connecting nozzle is positioned below the filtering pipeline and is vertically arranged between the impurity discharging connecting nozzle and the filtering pipeline, the impurity discharging connecting nozzle is also close to an upper pipe orifice of the filtering pipeline, an impurity storage shell is arranged on the main frame body, and the impurity storage shell is positioned right below the impurity discharging connecting nozzle;

the packing auger and the filtering pipeline are coaxially arranged, the power output end of the packing auger is movably connected with the fixed end cover arranged at the upper pipe opening of the filtering pipeline, the power input end of the packing auger penetrates through the filtering pipeline and the fixed end cover arranged at the lower pipe opening of the filtering pipeline and is positioned outside the filtering pipeline, the packing auger can axially rotate around the packing auger and can pull impurities on the metal filter screen to be conveyed towards the impurity removing connector, and a plurality of groups of through holes which penetrate through the thickness of the packing auger and are used for molten plastic to stably and smoothly pass through are uniformly arranged on the spiral surface of the packing auger at intervals;

the power input end of the packing auger and the power input end of the pushing screw are provided with a power connecting piece, the power connecting piece and the power input end of the pushing screw are connected and transmitted through a power connecting piece I, and the power connecting piece I is of a belt transmission structure.

The technical scheme is further improved and optimized.

The rotary die injection molding device is positioned on one side of the power output end of the pushing screw, which is deviated from the power input end of the rotary die injection molding device, and comprises a rotary die injection molding mechanism and an injection molding mechanism, wherein the injection molding mechanism is used for receiving the molten plastic conveyed by the conveying mechanism and injecting the molten plastic into the rotary die injection molding mechanism, and the rotary die injection molding mechanism is used for processing the molten plastic into a spherical plastic particle structure;

the rotary die injection molding mechanism comprises a rotary die component, an injection component, a cooling component and a discharging component, wherein the rotary die component is used for providing a needed die for molding spherical plastic particles, the injection component is used for injecting molten plastic in the rotary die component into a spherical plastic particle structure, the cooling component is used for providing needed cooling flowing water for cooling and molding the molten plastic in the rotary die component, and the discharging component is used for transferring out the spherical plastic particles cooled and molded in the rotary die component;

the rotary die component comprises a rotary die end cover, a rotary die body I and a rotary die body II, wherein the rotary die body I is of a disc structure, the axial direction of the rotary die body I is vertical to the ground, the rotary die body I is movably arranged on the main frame body and can rotate around the axial direction of the rotary die body I, a rotating shaft is coaxially fixed on the rotary die body I, and two ends of the rotating shaft I are respectively positioned at the upper side and the lower side of the rotary die body I;

the upper end face of the first rotary die body is provided with mounting holes penetrating through the axial thickness of the first rotary die body, the mounting holes are arrayed with five groups along the circumferential direction of the first rotary die body, forming die bodies are mounted in the mounting holes and correspondingly provided with five groups, the outer circular face of the first rotary die body is provided with discharge holes penetrating through the axial thickness of the first rotary die body, the discharge holes are located in the middle position between the two adjacent groups of mounting holes and correspondingly provided with five groups, and vent holes for mutual communication between the upper end face of the first rotary die body and the hole walls of the discharge holes are arranged between the upper end face of the first rotary die body and the hole walls of the discharge holes and correspondingly provided with five groups;

the forming die body is of a cylindrical structure matched with the mounting hole, the forming die body is coaxially and movably arranged in the mounting hole, a sliding guide fit with a guide direction perpendicular to the ground is formed between the forming die body and the mounting hole, the forming die body is provided with flow holes penetrating through the axial thickness of the forming die body, and four groups of the flow holes are arranged in an array manner along the circumferential direction of the forming die body;

the upper end face of the forming die body is provided with an external step, the lower orifice of the mounting hole is provided with an internal step, a first return spring is sleeved outside the forming die body, one end of the first return spring is abutted against the external step, the other end of the first return spring is abutted against the internal step, and the elastic force of the first return spring drives the forming die body to move upwards;

the lower end face of the forming die body is provided with a first die, the first die is of a cylindrical pipe structure with openings at two ends and a hemispherical inner cavity, the first die is communicated with the flow holes, and the lower end face of each group of forming die body is correspondingly provided with four groups of first dies.

The technical scheme is further improved and optimized.

The second rotating die body is of a disc structure coaxially arranged with the first rotating die body, the second rotating die body is positioned below the first rotating die body, a second rotating shaft is coaxially arranged on the second rotating die body, two ends of the second rotating shaft are respectively positioned at the upper side and the lower side of the second rotating die body, a one-way ratchet wheel piece is arranged between the top end of the second rotating shaft and the bottom end of the first rotating shaft, the two one-way ratchet wheels are in coaxial power connection through the one-way ratchet wheel piece, and the one-way ratchet wheel piece is used for drawing the second rotating shaft to synchronously rotate while a power device drives the first rotating shaft to rotate, and is not used for drawing the second rotating shaft to synchronously;

an avoidance groove is coaxially formed in the upper end face of the second rotary die body, the one-way ratchet wheel piece is arranged in the avoidance groove, and the upper end face of the second rotary die body is in close contact with the lower end face of the first rotary die body;

the upper end surface of the second rotary die body is provided with die grooves, the die grooves are communicated with mounting holes arranged on the first rotary die body, and five groups of die grooves are correspondingly arranged;

a second mold is vertically arranged at the bottom of the mold groove, the second mold is a round pipe structure with an opening at the upper end, a closed lower end and a hemispherical inner cavity, the second mold and the first mold are coaxially arranged, four groups of second molds are correspondingly arranged in each group of mold grooves, groove covers are coaxially matched and installed at the notches of the mold grooves, avoidance holes which penetrate through the axial thickness of the groove covers and are coaxially arranged with the second molds are formed in the groove covers, and four groups of avoidance holes are correspondingly formed in each group of groove covers;

mounting grooves are formed in the lower end face of the second rotary die body, the mounting grooves and the die grooves are coaxially arranged, five groups of the mounting grooves are correspondingly arranged, jacking holes for communicating the mounting grooves and the die grooves are formed between the bottom of each mounting groove and the inner cavity of the second die body, and four groups of the jacking holes in each group of the mounting grooves are correspondingly arranged;

and a water inlet hole for communicating the outer circle surface of the second rotary die body with the die groove is formed between the outer circle surface of the second rotary die body and the die groove, five groups of water inlet holes are correspondingly arranged, a water outlet hole for communicating the die groove with the die groove is formed between the bottom of the die groove and the bottom of the mounting groove, and a plurality of groups of water outlet holes are arranged in an array manner along the circumferential direction of the mounting groove.

The technical scheme is further improved and optimized.

The rotary die end cover is of a disc structure coaxially arranged with the rotary die body and is positioned above the rotary die body I, the upper end face of the rotary die body I is coaxially provided with an installation step, the rotary die end cover is coaxially provided with a rotary hole penetrating through the axial thickness of the rotary die end cover, the rotary die end cover is coaxially and movably sleeved outside the installation step through the rotary hole, the lower end face of the rotary die end cover is tightly contacted with the upper end face of the rotary die body I, and the rotary die end cover is also fixedly connected with the main frame body;

the upper end surface of the rotary die end cover is provided with a feeding groove, the bottom of the feeding groove is provided with a feeding hole penetrating to the lower end surface of the rotary die end cover, the feeding groove and any one group of mounting holes are coaxially arranged, the feeding hole is communicated with a flow hole on the forming die body in the mounting hole, and four groups of feeding holes are correspondingly arranged;

the upper end face of the rotary die end cover is also provided with a guide hole penetrating through the thickness of the rotary die end cover, a guide sleeve is vertically matched and arranged at the guide hole, the guide hole is positioned right ahead the feed chute driving the rotary die body to rotate and turn along a power device, the included angle between the guide hole and the feed chute is equal to the included angle between two adjacent groups of mounting holes, and the guide hole is communicated with the corresponding mounting holes;

the upper end face of the rotary die end cover is further provided with an air inlet hole penetrating through the thickness of the rotary die end cover, the air inlet hole is located in the front of the guide hole, the rotary die body is driven to rotate and turn along the power device, an included angle between the air inlet hole and the guide hole is equal to an included angle between the air vent and the adjacent mounting hole, and the air inlet hole and the corresponding air vent are communicated with each other.

The technical scheme is further improved and optimized.

The upper opening end of the guide sleeve is coaxially matched with a guide end cover in a circular structure, the pressure injection component comprises a guide rod which is coaxially arranged with the guide sleeve, the top end of the guide rod is coaxially provided with a touch block, the bottom end of the guide rod penetrates through the guide end cover and is positioned in the guide sleeve, the bottom end of the guide rod is also provided with a pressing block, and sliding guide fit is formed between the guide rod and the guide end cover and between the pressing block and the guide sleeve;

the lower end face of the pressing block is provided with pressing rods, the pressing rods and the flow holes positioned right below the guide sleeve are coaxially arranged, four groups of pressing rods are correspondingly arranged, the bottom end face of each pressing rod is of a spherical structure, and the bottom end face of each pressing rod, the inner cavity of the first die and the inner cavity of the second die can jointly form a group of complete spherical structures;

the outer part of the guide rod is sleeved with a first return spring, the first return spring is positioned between the contact block and the guide end cover, and the elastic force of the first return spring drives the guide rod to move upwards;

the main frame body is provided with two groups of bidirectional cylinders, the two groups of bidirectional cylinders are respectively a first bidirectional cylinder and a second bidirectional cylinder, and the power output end of the first bidirectional cylinder is coaxially and fixedly connected with the abutting block;

the cooling component comprises a water inlet pipeline and a water outlet assembly, one end of the water inlet pipeline is connected and communicated with an external cooling water source, the other end of the water inlet pipeline is an arc-shaped water outlet end which is coaxially arranged with the second rotary die body, and the water outlet end of the water inlet pipeline is close to the outer circular surface of the second rotary die body, is arranged on the outer circular surface of the second rotary die body and is communicated with the water inlet hole corresponding to the pressure injection component and the water outlet end of the water inlet pipeline;

the water outlet assembly is arranged in the mounting groove and correspondingly provided with five groups, the water outlet assembly comprises a mounting block, a return spring III and a water outlet pipeline, the mounting block is coaxially arranged in the mounting groove and forms sliding guide fit, the upper end surface of the mounting block is vertically provided with a jacking pin, the jacking pin and the die II are coaxially arranged, and the jacking pin is correspondingly provided with four groups;

the third return spring is arranged between the upper end surface of the mounting block and the bottom of the mounting groove, and the elastic force of the third return spring drives the mounting block to do descending motion;

one end of the water outlet pipeline is positioned between the upper end surface of the mounting block and the bottom of the mounting groove, the other end of the water outlet pipeline penetrates through the mounting block and is positioned below the mounting block, and the water outlet pipeline is of a hard pipeline structure and is fixedly connected with the mounting block;

the two-way cylinder II is positioned right below the water outlet assembly in the mounting groove corresponding to the water inlet pipeline, and the power output end of the two-way cylinder II and the water outlet pipeline of the water outlet assembly are coaxially arranged;

the discharging component comprises an air pipe and a discharging guide cylinder, one end of the air pipe is connected and communicated with external compressed gas equipment, the other end of the air pipe is connected and communicated with an air inlet hole formed in the upper end face of the rotary die end cover, the discharging guide cylinder is obliquely fixed on the main frame body, the highest point of the discharging guide cylinder is of an arc opening structure which is coaxially arranged with the rotary die body, and the highest point of the discharging guide cylinder is close to the outer circular surface of the rotary die body I, is arranged on the outer circular surface of the rotary die body I and is communicated with the highest point of the discharging guide cylinder and a discharging hole and the highest point of the.

The technical scheme is further improved and optimized.

The injection molding mechanism comprises an injection molding pipeline and a pressure reducing part, the injection molding pipeline is fixed on the main frame body, one end of the injection molding pipeline is coaxially connected and communicated with the conveying joint, the other end of the injection molding pipeline is of a closed structure, the outer circular surface of the injection molding pipeline is connected and communicated with an injection molding nozzle, the injection molding nozzle is close to the closed end of the injection molding pipeline, the free end of the injection molding nozzle is fixedly connected with the upper end surface of the rotary mold end cover, and the injection molding nozzle is coaxially connected and communicated with the feeding groove;

the pressure reducing piece comprises a pressure reducing pipeline, a pressure reducing piston and a pressure reducing spring, the pressure reducing pipeline is fixed outside the injection molding pipeline and communicated with the injection molding pipeline, and the other end of the pressure reducing pipeline is provided with a pressure reducing end cover in a matching way;

the decompression piston set up in the pressure reducing pipe and constitute sealed sliding guide cooperation between the two, decompression spring's one end is contradicted with decompression piston, the other end is contradicted with the decompression end cover, decompression spring's elasticity orders about the motion that the decompression piston was close to the pipeline of moulding plastics.

The technical scheme is further improved and optimized.

The power device comprises a power motor, a first power transmission mechanism, a second power transmission mechanism and a third power transmission mechanism, wherein the power motor is vertically fixed on the main frame body;

the first power transmission mechanism comprises a first power transmission part, a first intermittent sheave member and a second power transmission part, the first intermittent sheave member is of an intermittent sheave structure, a driving part/a driven part of the first intermittent sheave member are axially vertical to the ground and movably arranged on the main frame body and can axially rotate around the first intermittent sheave member, the motion state of the first intermittent sheave member can be divided into a traction state that the driving part is in contact with the driven part and the driving part pulls the driven part to synchronously rotate, and a disengagement state that the driving part is disengaged from the driven part and the driving part cannot continuously pull the driven part to rotate;

the first power transmission part/the second power transmission part is of a belt transmission structure, the first power transmission part is arranged between the power motor and the driving part of the first intermittent sheave member and used for power connection transmission between the power motor and the driving part, the second power transmission part is arranged between the driven part of the first intermittent sheave member and the top end of the rotating shaft and used for power connection transmission between the driven part of the first intermittent sheave member and the top end of the rotating shaft, the first power transmission part and the second power transmission part can firstly drive the rotating shaft to rotate through the first power transmission part and the first intermittent sheave member in a traction state in a running period, the rotating angle of the rotating shaft is equal to the included angle between two adjacent groups of mounting holes, and then the driving part of the first intermittent sheave member in a separation state is pulled through the first power transmission part to continuously rotate, and the driven part of the first intermittent sheave member/the second power transmission part/.

The technical scheme is further improved and optimized.

The second power transmission mechanism comprises a trigger member and a transmission member, the trigger member comprises a trigger disc, a driving block, a sliding rod and a trigger block, the trigger disc is coaxially fixed outside the driving part of the first intermittent grooved pulley member, and the driving part of the first intermittent grooved pulley member rotates and pulls the trigger disc to synchronously rotate;

the trigger block is horizontally placed on the upper end face of the trigger disc, a trigger pin matched with the trigger block is arranged on the upper end face of the trigger disc, the trigger pin rotates close to the trigger block in the process that the first intermittent sheave member driving part in a traction state rotates and pulls the trigger disc to synchronously rotate, the trigger pin contacts with the trigger block in the process that the first intermittent sheave member driving part in a separation state rotates and pulls the trigger disc to synchronously rotate, and the trigger pin firstly pushes the trigger block to move away from the axial center line of the trigger disc and pushes the trigger block by the withdrawing pin;

the driving block is positioned on one side, away from the trigger pin, of the trigger block, the sliding rod is arranged between the trigger block and the driving block, the extending direction of the sliding rod is parallel to the distance direction between the trigger block and the driving block, one end of the sliding rod is fixedly connected with the trigger block, the other end of the sliding rod is movably connected with the driving block and forms sliding guide fit, a stroke spring is sleeved outside the part, between the driving block and the trigger block, of the sliding rod, and the driving block is driven to move far away from the trigger block by the elasticity of the stroke spring;

the side surface of the driving block, which is far away from the triggering block, is provided with a fourth reset spring, one end of the fourth reset spring is connected with the driving block, the other end of the fourth reset spring is connected with the main frame body, the elastic force of the fourth reset spring drives the driving block to move close to the triggering block, and the elastic coefficient of the stroke spring is greater than that of the fourth reset spring;

the transmission component comprises a first transmission shaft, a second transmission shaft and a transmission switching piece, the first transmission shaft is coaxially fixed at the bottom of the first intermittent grooved pulley component, a transmission block in a cylindrical structure is coaxially arranged at the top end of the first transmission shaft, and lower gear shaping is arranged at the bottom end of the transmission block in a matched manner;

the second transmission shaft is provided with a sleeving hole penetrating through the axial thickness of the second transmission shaft, the second transmission shaft is coaxially and movably sleeved outside the part, below the transmission block, of the first transmission shaft through the sleeving hole, the rotation of the first transmission shaft and the rotation of the second transmission shaft are not interfered with each other, and the top end of the second transmission shaft is provided with upper gear shaping matched with the lower gear shaping;

the transmission switching piece comprises a fixed block and a switching plate, the fixed block is of a rectangular structure which is horizontally arranged, a fixed hole which penetrates through the fixed block is formed in the upper end face of the fixed block, the fixed block is fixedly mounted outside the transmission shaft through the fixed hole, a switching groove is formed in the side face, parallel to the extending direction of the sliding rod, of the fixed block, the switching groove can be divided into three parts along the extending direction of the switching groove, the three parts are respectively an inclined section and a horizontal section I/II which are horizontally arranged, the horizontal section I is communicated with the highest point of the inclined section, the horizontal section II is communicated with the lowest point of the inclined section, the horizontal section I is also positioned on one side, away from the driving block, of the horizontal section II, and the horizontal section I/II and the inclined section;

the large surface of the switching plate is parallel to the side surface of the fixed block provided with the switching groove, the switching plate is movably arranged on the main frame body, the switching plate and the main frame body form sliding guide fit with the guide direction parallel to the extension direction of the sliding rod, the large surface of the switching plate facing the switching groove is provided with a switching pin, and the free end of the switching pin is positioned in the switching groove;

the switching plate is fixedly connected with the driving block;

the motion state of the second power transmission mechanism can be divided into a transmission state that the upper gear shaping is inserted into the lower gear shaping and one transmission shaft rotates to pull the transmission shaft to synchronously rotate, a disconnection state that the upper gear shaping is not inserted into the lower gear shaping, and the initial state of the second power transmission mechanism is a disconnection state.

The technical scheme is further improved and optimized.

The third power transmission mechanism comprises a third power transmission part, a second intermittent sheave component and a fourth power transmission part, the second intermittent sheave component is of an intermittent sheave structure, a driving part/a driven part of the second intermittent sheave component are axially vertical to the ground and movably arranged on the main frame body and can axially rotate around the second intermittent sheave component, and the motion state of the second intermittent sheave component can be divided into a traction state that the driving part is in contact with the driven part and the driving part pulls the driven part to synchronously rotate, and a disengagement state that the driving part is disengaged from the driven part and the driving part cannot continuously pull the driven part to rotate;

the third power transmission part is arranged between the second transmission shaft and the driving part of the second intermittent sheave member and is used for power connection transmission between the second transmission shaft and the driving part of the second intermittent sheave member;

and the second intermittent sheave member in a traction state firstly pulls the second rotating shaft to synchronously rotate and the rotating angle is equal to the included angle between the vent hole and the adjacent mounting hole, and then the second intermittent sheave member is restored to a separation state.

Compared with the prior art, the method has the beneficial effects that the spherical plastic particles are obtained by sequentially heating and melting plastic raw materials, filtering impurities, performing injection molding, performing pressure injection cooling molding and blowing discharging treatment, and the obtained spherical plastic particles have small spherical diameter error and high quality and are more convenient for subsequent sale; in the impurity filtering process, the impurities can be dragged and conveyed away by the auger after being blocked on the metal filter screen, so that the metal filter screen does not need to be frequently replaced, the production efficiency is improved, and the cost is saved; in the injection molding process, the existence of the heating element can enable the plastic to keep molten state and be conveyed into a subsequent molding die by injection molding, and the problem that molding is influenced by semi-solidification and the like can not occur; in the process of pressure injection cooling molding, spherical pressure injection and flowing water cooling are adopted to be matched to mold molten plastic into a spherical plastic particle structure, the molding process is stable and smooth, and the spherical diameter error among the obtained spherical plastic particles is small and the quality is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

FIG. 3 is a schematic view of the raw material melting apparatus of the present invention.

FIG. 4 is a schematic view of the raw material melting apparatus of the present invention.

FIG. 5 is a schematic view of the raw material melting apparatus of the present invention.

FIG. 6 is a schematic diagram of the construction of the melting tank and filter mechanism of the present invention.

Fig. 7 is a schematic view of the structure of the filter mechanism of the present invention.

FIG. 8 is a schematic diagram of the auger of the present invention.

Fig. 9 is a schematic structural view of the conveying mechanism of the present invention.

FIG. 10 is a schematic structural view of a rotary die-casting injection molding device and a power device according to the present invention.

FIG. 11 is a schematic structural view of a rotary die-casting injection molding device and a power device according to the present invention.

Fig. 12 is a schematic structural view of the transfer molding mechanism of the present invention.

FIG. 13 is a schematic diagram of the parts mating of the transfer molding mechanism of the present invention.

Fig. 14 is a schematic view of the mating of the rotary die end cap and the injection molding member of the present invention.

Fig. 15 is a schematic structural view of the injection-molded member of the present invention.

FIG. 16 is a schematic structural diagram of a first mold body of the invention.

Fig. 17 is a schematic structural view of the molding die body of the present invention.

Fig. 18 is a sectional view of the molding die body of the present invention.

FIG. 19 is a schematic structural diagram of a second mold according to the present invention.

FIG. 20 is a cross-sectional view of a second mold body of the present invention.

Fig. 21 is a schematic structural view of the water outlet assembly of the present invention.

FIG. 22 is a schematic view of the injection mechanism of the present invention mated with a rotary die end cap.

Fig. 23 is a sectional view of the injection mechanism of the present invention.

FIG. 24 is a schematic view of the power unit and the rotary mold body I/II according to the present invention.

Fig. 25 is a schematic structural view of the power unit of the present invention.

Fig. 26 is a schematic structural view of the power motor and the first power transmission mechanism of the present invention.

Fig. 27 is a schematic structural view of a second power transmission mechanism of the present invention.

Fig. 28 is a schematic view of the engagement of the driving member of the triggering member and the first intermittent sheave member of the present invention.

Fig. 29 is a schematic structural view of the trigger member of the present invention.

Fig. 30 is a schematic structural view of a transmission member of the present invention.

Fig. 31 is a part diagram of the transmission member of the present invention.

FIG. 32 is a schematic view of the first/second shafts of the present invention.

Fig. 33 is a schematic structural view of a third power transmission mechanism of the present invention.

Detailed Description

The invention has the advantages that the spherical plastic particles are obtained by sequentially heating and melting plastic raw materials, filtering impurities, performing injection molding, performing pressure injection cooling molding and blowing and discharging treatment, and the obtained spherical plastic particles have small spherical diameter error and high quality and are more convenient for subsequent sale; in the impurity filtering process, the impurities can be dragged and conveyed away by the auger after being blocked on the metal filter screen, so that the metal filter screen does not need to be frequently replaced, the production efficiency is improved, and the cost is saved; in the injection molding process, the existence of the heating element can enable the plastic to keep molten state and be conveyed into a subsequent molding die by injection molding, and the problem that molding is influenced by semi-solidification and the like can not occur; in the process of pressure injection cooling molding, spherical pressure injection and flowing water cooling are adopted to be matched to mold molten plastic into a spherical plastic particle structure, the molding process is stable and smooth, and the spherical diameter error among the obtained spherical plastic particles is small and the quality is high.

The plastic particle forming machine comprises a main frame body, wherein a raw material melting device 100, a rotary die injection molding device 200 and a power device 300 are installed on the main frame body, the raw material melting device 100 is used for heating and melting plastic raw materials, filtering impurities of molten plastic and then conveying the molten plastic to the rotary die injection molding device 200, the rotary die injection molding device 200 is used for receiving the molten plastic and processing the molten plastic into spherical plastic particles, and the power device 300 is used for providing operation power for the rotary die injection molding device 200.

The raw material melting apparatus 100 includes a melting tank 110 for heating and melting a plastic raw material, a filtering mechanism 120 for receiving molten plastic heated and melted by the melting tank 110 and filtering impurities from the molten plastic, and a rotary die injection molding apparatus 200 for receiving the molten plastic filtered by the filtering mechanism 120 and transferring the molten plastic into the rotary die injection molding apparatus.

The melting tank 110 is fixed on the main frame body, and the bottom of the melting tank is communicated with a discharge pipeline; the melting tank 110 is prior art and will not be described in detail herein.

The conveying mechanism 130 is positioned below the melting tank 110, the conveying mechanism 130 comprises a conveying motor 131, a conveying pipeline 133 and a pushing screw 136, the conveying pipeline 133 is horizontally fixed on the main frame body, a conveying end cover is arranged at one pipe orifice of the conveying pipeline 133 in a matched mode, a connecting support is arranged in the other pipe orifice, a conveying joint 135 is further coaxially arranged at the pipe orifice of the conveying pipeline 133 provided with the connecting support in a matched mode, a third fixing joint 134 is connected and communicated with the outside of the conveying pipeline 133, the third fixing joint 134 is vertically arranged, is positioned above the conveying pipeline 133 and is close to the conveying end cover, and preferably, a heating element 137 used for heating the conveying pipeline 133 is arranged outside the conveying pipeline 133 in a matched mode; the heating element 137 is conventional and will not be described in detail herein.

The pushing screw 136 and the conveying pipe 133 are coaxially arranged, the power output end of the pushing screw 136 is movably connected with the connecting support, the power input end of the pushing screw 136 penetrates through the conveying pipe 133 and the conveying end cover and is located outside the conveying pipe 133, the pushing screw 136 can axially rotate around itself, and the pushing screw 136 rotates and pulls the molten plastic to be conveyed towards the conveying joint 135.

The axial direction of the output shaft of the conveying motor 131 is parallel to the axial direction of the conveying pipeline 133, the conveying motor 131 is fixed on the main frame body, a second power connecting piece 132 is arranged between the power output end of the conveying motor 131 and the power input end of the pushing screw 136, and power connection and transmission are performed between the second power connecting piece 132 and the second power connecting piece 132 through the second power connecting piece 132, specifically, the second power connecting piece 132 is of a belt transmission structure.

Molten plastic filtered by impurities of the filtering mechanism 120 flows into the conveying pipeline 133 through the third fixed connector 134, meanwhile, the conveying motor 131 operates and drives the pushing screw 136 to rotate axially around the conveying motor through the second power connector 132, the pushing screw 136 rotates and pulls the molten plastic to be conveyed towards the conveying connector 135, and in the conveying process, the heating element 137 enables the plastic to be kept in a molten state structure all the time.

The filtering mechanism 120 is arranged between the melting tank 110 and the conveying mechanism 130, the filtering mechanism 120 comprises a filtering pipeline 122 and an auger 126, the filtering pipeline 122 is obliquely fixed on the main frame, the two pipe orifices of the filtering pipeline 122 are respectively provided with a fixed end cover in a matching way, and the outer circular surface of the filtering pipeline 122 is connected and communicated with a first fixed connector 123, a second fixed connector 124 and a impurity discharging connector 125.

Fixed joint mouth one 123 and fixed joint mouth two 124 all be vertical and both are close to the lower mouth of pipe of filtration pipeline 122, be vertical between fixed joint mouth one 123 and the fixed joint mouth two 124 and arrange and fixed joint mouth one 123 is located fixed joint mouth two 124 directly over, fixed joint mouth one 123 with set up the fixed connection switch-on between the ejection of compact pipeline of melting tank 110 bottom, fixed joint mouth two 124 and the switch-on department matching of filtration pipeline 122 are provided with the metal filter screen, fixed connection switch-on between fixed joint mouth two 124 and the fixed joint mouth three 134.

The impurity discharging connector 125 is located below the filtering pipeline 122 and vertically arranged between the filtering pipeline 122 and the impurity discharging connector 125, the impurity discharging connector 125 is close to an upper pipe opening of the filtering pipeline 122, an impurity storage shell is installed on the main frame body, and the impurity storage shell is located right below the impurity discharging connector 125.

Auger 126 and filtration pipeline 122 between be coaxial arrangement, the power take off end of auger 126 with set up swing joint between the fixed end cover of pipeline department on filtration pipeline 122, power take off end passes filtration pipeline 122 and sets up the fixed end cover of pipeline department under filtration pipeline 122 and lies in the outside of filtration pipeline 122, auger 126 can rotate around self axial and auger 126 rotates and can pull the impurity on the metal filter screen and carry towards row's miscellaneous mouth 125 direction, auger 126's helicoid evenly spaced apart to be equipped with a plurality of groups and run through its thickness and be used for the smooth through-hole that molten state plastics steadily pass through.

A power connecting piece I121 is arranged between the power input end of the packing auger 126 and the power input end of the pushing screw 136, power connection and transmission are carried out between the power input end of the packing auger and the power input end of the pushing screw 136 through the power connecting piece I121, and specifically, the power connecting piece I121 is of a belt transmission structure.

Molten plastic in the melting tank 110 sequentially flows into the conveying mechanism 130 through the discharge pipeline, the first fixed connector 123, the through hole formed in the spiral surface of the packing auger 126, the metal filter screen, the second fixed connector 124 and the third fixed connector 134, impurities doped in the molten plastic are filtered and blocked by the metal filter screen, meanwhile, the pushing screw 136 rotates and pulls the packing auger 126 to rotate through the first power connector 121, the packing auger 126 rotates and can pull impurities on the metal filter screen to be conveyed towards the impurity removal connector 125, and the impurities finally fall into the impurity storage shell.

The rotary die injection molding device 200 is located at a side of the power output end of the pushing screw 126 away from the power input end of the rotary die injection molding device 200, the rotary die injection molding device 200 includes a rotary die injection molding mechanism 210 and an injection molding mechanism 220, the injection molding mechanism 220 is used for receiving the molten plastic conveyed by the conveying mechanism 130 and injecting the molten plastic into the rotary die injection molding mechanism 210, and the rotary die injection molding mechanism 210 is used for processing the molten plastic into a spherical plastic particle structure.

The rotary die injection molding mechanism 210 comprises a rotary die member, an injection molding member 214, a cooling member 215, and a discharging member, wherein the rotary die member is used for providing a needed die for molding spherical plastic particles, the injection molding member 214 is used for injecting molten plastic in the rotary die member into a spherical plastic particle structure, the cooling member 215 is used for providing needed cooling flowing water for cooling and molding the molten plastic in the rotary die member, and the discharging member is used for transferring out the spherical plastic particles cooled and molded in the rotary die member.

The rotary die component comprises a rotary die end cover 211, a first rotary die body 212 and a second rotary die body 213, wherein the first rotary die body 212 is of a disc structure which is axially vertical to the ground, the first rotary die body 212 is movably arranged on the main frame body and can rotate around the axial direction of the first rotary die body, a first rotating shaft 2121 is coaxially fixed on the first rotary die body 212, and two ends of the first rotating shaft 2121 are respectively positioned at the upper side and the lower side of the first rotary die body 212.

The upper end face of the first rotary die body 212 is provided with mounting holes penetrating through the axial thickness of the first rotary die body, five groups of the mounting holes are arrayed along the circumferential direction of the first rotary die body 212, the forming die body 2122 is mounted in the mounting holes, five groups of the forming die body 2122 are correspondingly arranged, discharge holes penetrating through the axial thickness of the first rotary die body 212 are formed in the outer circular face of the first rotary die body, the discharge holes are located in the middle position between the two adjacent groups of the mounting holes, five groups of the discharge holes are correspondingly arranged, vent holes used for communicating the upper end face of the first rotary die body 212 with the hole walls of the discharge holes are formed between the upper end face of the first rotary die body 212 and the hole walls of.

The forming die body 2122 is a cylindrical structure matched with the mounting hole, the forming die body 2122 is coaxially and movably arranged in the mounting hole, a sliding guide fit with a guiding direction perpendicular to the ground is formed between the forming die body 2122 and the mounting hole, the forming die body 2122 is provided with four sets of flow holes 2123 penetrating through the axial thickness of the forming die body, and the flow holes 2123 are arrayed along the circumferential direction of the forming die body 2122.

The upper end surface of the forming die body 2122 is provided with an external step, the lower orifice of the mounting hole is provided with an internal step, a first return spring 2125 is sleeved outside the forming die body 2122, one end of the first return spring 2125 abuts against the external step, the other end of the first return spring 2125 abuts against the internal step, and the elastic force of the first return spring 2125 drives the forming die body 2122 to move upwards.

The lower end surface of the forming die body 2122 is provided with a first die 2124, the first die 2124 is a cylindrical tube structure with two open ends and a hemispherical inner cavity, the first die 2124 and the flow hole 2123 are communicated with each other, and the lower end surface of each group of forming die bodies 2122 is correspondingly provided with four groups of first dies 2124.

The second rotating die body 213 is a disc structure coaxially arranged with the first rotating die body 212, the second rotating die body 213 is located below the first rotating die body 212, a second rotating shaft 2131 is coaxially arranged on the second rotating die body 213, two ends of the second rotating shaft 2131 are located at the upper side and the lower side of the second rotating die body 213 respectively, a one-way ratchet member is arranged between the top end of the second rotating shaft 2131 and the bottom end of the first rotating shaft 2121, the two one-way ratchet members are coaxially connected through the one-way ratchet member, and the one-way ratchet member is used for driving the second rotating shaft 2131 to synchronously rotate while the power device 300 drives the second rotating shaft 2131 to rotate, and the first rotating shaft 2121 cannot be driven to synchronously rotate while the power device 300 drives the second rotating shaft 213.

An avoiding groove is coaxially formed in the upper end face of the second rotating die body 213, the one-way ratchet wheel piece is arranged in the avoiding groove, and the upper end face of the second rotating die body 213 is in close contact with the lower end face of the first rotating die body 212.

The upper end surface of the second rotating die body 213 is provided with a die groove 2132, the die groove 2132 is communicated with the mounting hole arranged on the first rotating die body 212, and five groups of die grooves 2132 are correspondingly arranged.

A second mold 2133 is vertically arranged at the bottom of the mold groove 2132, the second mold 2133 is a round pipe structure with an open upper end and a closed lower end, an inner cavity is hemispherical, the second mold 2133 and the first mold 2124 are coaxially arranged, four groups of second molds 2133 are correspondingly arranged in each group of mold grooves 2132, groove covers 2135 are coaxially matched and installed at the notches of the mold grooves 2132, avoidance holes penetrating through the axial thickness of the groove covers 2135 and coaxially arranged with the second molds 2133 are formed in the groove covers 2135, and four groups of avoidance holes are correspondingly arranged in each group of groove covers 2135.

The lower end surface of the second rotating die body 213 is provided with a mounting groove 2134, the mounting grooves 2134 and the die grooves 2132 are coaxially arranged, five groups of the mounting grooves 2134 are correspondingly arranged, jacking holes for communicating the mounting grooves 2134 with the inner cavity of the second die body 2133 are arranged between the bottom of the mounting groove 2134 and the inner cavity of the second die body, and four groups of the jacking holes in each group of the mounting grooves 2134 are correspondingly arranged.

And water inlet holes for communicating the outer circular surface of the second rotary die body 213 with the die groove 2132 are formed between the outer circular surface of the second rotary die body 213 and the die groove 2132, five groups of water inlet holes are correspondingly formed in the water inlet holes, water outlet holes for communicating the bottom of the die groove 2132 with the bottom of the mounting groove 2134 are formed between the bottom of the die groove 2132 and the bottom of the mounting groove 2134, and a plurality of groups of water outlet holes are arrayed in the.

The rotary die end cover 211 is of a disc structure and is coaxially arranged with the rotary die body I212, the rotary die end cover 211 is located above the rotary die body I212, an installation step is coaxially arranged on the upper end face of the rotary die body I212, a rotary hole penetrating through the axial thickness of the rotary die end cover 211 is coaxially arranged on the rotary die end cover 211, the rotary die end cover 211 is coaxially sleeved outside the installation step through the rotary hole, the lower end face of the rotary die end cover 211 is in close contact with the upper end face of the rotary die body I212, and the rotary die end cover 211 is fixedly connected with the main frame body.

The upper end surface of the rotary die end cover 211 is provided with a feed groove 2111, the bottom of the feed groove 2111 is provided with a feed hole 2112 penetrating to the lower end surface of the rotary die end cover 211, the feed groove 2111 and any group of mounting holes are coaxially arranged, the feed hole 2112 is communicated with a flow hole 2123 on a forming die body 2122 in the mounting holes, and four groups of feed holes 2112 are correspondingly arranged.

The upper end face of the rotary die end cover 211 is further provided with a guide hole penetrating through the thickness of the rotary die end cover, a guide sleeve 2113 is vertically matched with the guide hole, the guide hole is positioned in the front of the feed groove 2111 driving the rotary die body 212 to rotate and turn along the power device 300, the included angle between the guide hole and the feed groove 2111 is equal to the included angle between the two adjacent groups of mounting holes, and the guide hole is communicated with the corresponding mounting holes.

The upper end face of the rotary die end cover 211 is further provided with an air inlet hole penetrating through the thickness of the rotary die end cover, the air inlet hole is located right ahead of the guide hole driving the rotary die body 212 to rotate and turn along the power device 300, an included angle between the air inlet hole and the guide hole is equal to an included angle between the air vent and the adjacent mounting hole, and the air inlet hole and the corresponding air vent are communicated with each other.

The coaxial matching of the upper end of guide sleeve 2113 install the direction end cover that is the ring column structure, pressure notes component 214 include with the coaxial guide bar 2141 who arranges of guide sleeve 2113, the top of guide bar 2141 is coaxial to be provided with conflict piece 2142, the bottom of guide bar 2141 passes the direction end cover and is located guide sleeve 2113, the bottom of guide bar 2141 still is provided with briquetting 2143, between guide bar 2141 and the direction end cover, all constitute the slip direction cooperation between briquetting 2143 and the guide sleeve 2113.

The lower end surface of the pressing block 2143 is provided with pressing rods 2144, the pressing rods 2144 and the flow holes 2123 located right below the guide sleeve 2113 are coaxially arranged, four groups of pressing rods 2144 are correspondingly arranged, the bottom end surface of each pressing rod 2144 is of a spherical structure, and a group of complete spherical structures can be formed among the bottom end surface of each pressing rod 2144, the inner cavity of the first mold 2124 and the inner cavity of the second mold 2133.

The outside of the guide rod 2141 is sleeved with a first return spring 2125, the first return spring 2125 is located between the abutting block 2142 and the guide end cap, and the elastic force of the first return spring 2125 drives the guide rod 2141 to move upwards.

The main frame body is provided with two-way cylinders 230, the two-way cylinders 230 are provided with two groups and are respectively a first two-way cylinder or a second two-way cylinder, and the power output end of the first two-way cylinder is coaxially and fixedly connected with the abutting block 2142.

The cooling member 215 comprises a water inlet pipeline 2151 and a water outlet assembly, one end of the water inlet pipeline 2151 is connected and communicated with an external cooling water source, the other end of the water inlet pipeline 2151 is an arc water outlet end coaxially arranged with the second rotary mold body 213, and the water outlet end of the water inlet pipeline 2151 is close to the outer circular surface of the second rotary mold body 213, is arranged on the outer circular surface of the second rotary mold body 213, and is communicated with a water inlet hole corresponding to the pressure injection member 214 and the water outlet end of the water inlet pipeline 2151.

The water outlet assembly is arranged in the mounting groove 2134 and is correspondingly provided with five groups, the water outlet assembly comprises a mounting block 2152, a return spring III 2154 and a water outlet pipeline 2155, the mounting block 2152 is coaxially arranged in the mounting groove 2134 and forms sliding guide fit, the upper end face of the mounting block 2152 is vertically provided with a jacking pin 2153, the jacking pin 2153 and the second die 2133 are coaxially arranged, and four groups of jacking pins 2153 are correspondingly arranged.

The third return spring 2154 is arranged between the upper end surface of the mounting block 2152 and the bottom of the mounting groove 2134, and the elastic force of the third return spring 2154 drives the mounting block 2152 to move downwards.

One end of the water outlet pipe 2155 is positioned between the upper end surface of the mounting block 2152 and the bottom of the mounting groove 2134, the other end of the water outlet pipe passes through the mounting block 2152 and is positioned below the mounting block 2152, and the water outlet pipe 2155 is of a hard pipe structure and is fixedly connected with the mounting block 2152.

The two-way cylinder II is positioned right below the water outlet assembly in the mounting groove 2134 corresponding to the water inlet pipeline 2151, and the power output end of the two-way cylinder II and the water outlet pipeline 2155 of the water outlet assembly are coaxially arranged.

The discharging component comprises an air pipe 216 and a discharging guide cylinder 217, one end of the air pipe 216 is communicated with external compressed gas equipment, the other end of the air pipe 216 is communicated with an air inlet hole formed in the upper end face of the rotary die end cover 211, the discharging guide cylinder 217 is obliquely fixed on the main frame body, the highest point of the discharging guide cylinder 217 is of an arc opening structure which is coaxially arranged with the rotary die body one 212, and the highest point of the discharging guide cylinder 217 is close to the outer circular surface of the rotary die body one 212, is arranged on the outer circular surface of the rotary die body one 212, and is communicated with the discharging hole corresponding to the air inlet hole and the highest point of the discharging guide cylinder 217.

The operation process of the transfer molding mechanism 210 is specifically as follows:

the injection mechanism 220 receives the molten plastic delivered by the raw material melting device 100 and injects the molten plastic into the feed chute 2111, and then the molten plastic flows into the corresponding mold one 2124 through the feed hole 2112 and the flow hole 2123 on the forming mold body 2122 in the mounting hole coaxially arranged with the feed chute 2111 in sequence;

when the amount of the molten plastic in the first mold 2124 meets the required amount for one-time spherical molding, the power device 300 operates to drive the first rotating shaft 2121 to rotate, the first rotating shaft 2121 rotates and pulls the first rotating mold body 212 to rotate synchronously, and meanwhile, the first rotating shaft 2121 also pulls the second rotating shaft 2131/the second rotating mold body 213 to rotate synchronously through the one-way ratchet wheel;

when the rotation angle of the first rotating shaft 2121 is equal to the included angle between the two adjacent sets of mounting holes, the power device 300 continues to operate but stops driving the first rotating shaft 2121 to rotate, and at this time, the first mold 2124 filled with the molten plastic required for one-time spherical molding and the corresponding second mold 2133 are located right below the injection molding member 214;

then, the first bi-directional cylinder operates to drive the injection molding member 214 to move downward, the bottom end of the pressing rod 2144 of the injection molding member 214 passes through the upper opening of the mounting hole, the flow hole 2123 and is positioned in the first mold 2124, the injection member 214 continues to descend and the bottom end of the first mold 2124 passes through the slot cover 2135 and is positioned within the second mold 2133, at which time, the end surface of the bottom end of the pressure bar 2144, the inner cavity of the first die 2124 and the inner cavity of the second die 2133 can jointly form a complete spherical structure, so as to press and inject the molten plastic into a spherical structure, meanwhile, in the process, cooling water flows into the mold groove 2132 through the water inlet pipeline 2151 and flows out through the water outlet assembly, so as to cool and mold the molten plastic, under the coordination of the spherical injection and the cooling molding, the molten plastic is molded into a spherical particle structure, after the molding is finished, the bidirectional cylinder I runs in reverse direction and the injection member 214 returns to the original shape, meanwhile, the elastic force of the first return spring 2125 can restore the forming die body 2122 to the original shape;

then, the power device 300 operates to drive the second rotating shaft 2131 to rotate, the second rotating shaft 2131 rotates and pulls the second rotating mold body 213 to rotate synchronously, meanwhile, the second rotating shaft 2131 rotates and cannot pull the first rotating shaft 2121 to rotate synchronously due to the one-way ratchet member, the first rotating mold body 212 is still, when the rotating angle of the second rotating shaft 2131/the second rotating mold body 213 is equal to the included angle between the vent hole and the adjacent mounting hole, the power device 300 continues to operate but stops driving the second rotating shaft 2131 to rotate, and at this moment, the second mold 2133 filled with spherical plastic particles is positioned right below the discharge hole communicated with the highest point of the discharge guide cylinder 217;

subsequently, the two-way cylinder II operates and drives the water outlet assembly to ascend, the ejector pin 2153 of the water outlet assembly penetrates through the jacking hole and jacks the spherical plastic particles in the second mold 2133 into the discharge hole, meanwhile, the compressed gas is blown to the spherical plastic particles through the gas pipe 216, the spherical plastic particles are blown into the discharge guide cylinder 217 and guided to be output, and therefore the one-step forming process of the spherical plastic particles is finished.

In the above process, while the first mold 2124 filled with the amount of molten plastic required for one shot of spherical molding and the corresponding second mold 2133 are both located right below the injection member 214, the next set of molding dies 2122 is located right below the feeding chute 2111, and while the discharge of spherical plastic particles is completed, the amount of molten plastic in the first mold 2124 of the next set of molding dies 2122 is equal to the amount of molten plastic required for one shot of spherical molding, and then the above process is repeated, and so on.

The injection molding mechanism 220 comprises an injection molding pipeline 221 and a pressure reducing part, the injection molding pipeline 221 is fixed on the main frame body, one end of the injection molding pipeline 221 is coaxially connected and communicated with the conveying connector 135, the other end of the injection molding pipeline is of a closed structure, an outer circular surface of the injection molding pipeline 221 is connected and communicated with an injection molding nozzle 222, the injection molding nozzle 222 is close to the closed end of the injection molding pipeline 221, the free end of the injection molding nozzle 222 is fixedly connected with the upper end surface of the rotary mold end cover 211, and the injection molding nozzle 222 is coaxially connected and communicated with the feeding groove 2111.

The pressure reducing piece comprises a pressure reducing pipeline 223, a pressure reducing piston 224 and a pressure reducing spring 225, the pressure reducing pipeline 223 is fixed outside the injection molding pipeline 221 and communicated with the injection molding pipeline 221, and the other end of the pressure reducing pipeline 223 is provided with a pressure reducing end cover in a matching mode.

The pressure reducing piston 224 is arranged in the pressure reducing pipe 223, a sealed sliding guide fit is formed between the pressure reducing piston and the pressure reducing pipe, one end of a pressure reducing spring 225 is abutted against the pressure reducing piston 224, the other end of the pressure reducing spring is abutted against a pressure reducing end cover, and the elastic force of the pressure reducing spring 225 drives the pressure reducing piston 224 to move close to the injection molding pipe 221.

In addition to the molten plastic heated and melted by the raw material melting device 100 flowing into the feed channel 2111 through the delivery connector 135, the injection pipeline 221 and the injection connector 222, during the rotation process of the first rotary mold body 212, the first rotary mold body 212 can be momentarily plugged with the feed channel 2111/the feed hole 2112, the molten plastic cannot continuously flow into the first rotary mold body 212, and at the moment, the molten plastic can be accumulated into the injection pipeline 221 and push the pressure reducing piston 224 to move away from the injection pipeline 221, so that the purpose of pressure reduction protection of the injection pipeline 221 is achieved, the rotation of the first rotary mold body 212 is finished, namely, when the plugging between the first rotary mold body 212 and the feed hole 21112 is finished, the pressure reducing piece is driven to be restored to the original state by the elastic force of the pressure reducing spring 225, and the process is repeated.

The power device 300 comprises a power motor 310, a first power transmission mechanism 320, a second power transmission mechanism 330 and a third power transmission mechanism 340, wherein the power motor 310 is vertically fixed on the main frame body, the first power transmission mechanism 320 is used for power connection and transmission between the power motor and the top end of the first rotating shaft 2121, the second power transmission mechanism 330 is used for power connection and transmission between the first power transmission mechanism 320 and the third power transmission mechanism 340, and the third power transmission mechanism 340 is used for receiving the power of the second power transmission mechanism 330 and transmitting the power to the second rotating shaft 2131.

The first power transmission mechanism 320 includes a first power transmission element 321, a first intermittent sheave member 322, and a second power transmission element 323, the first intermittent sheave member 322 is an intermittent sheave structure, the driving element/driven element of the first intermittent sheave member 322 is axially perpendicular to the ground and both are movably mounted on the main frame body and can axially rotate around itself, the motion state of the first intermittent sheave member 322 can be divided into a traction state in which the driving element contacts with the driven element and the driving element pulls the driven element to synchronously rotate, and a disengagement state in which the driving element disengages from the driven element and the driving element fails to continuously pull the driven element to rotate.

The first power transmission part 321 is arranged between the power motor 310 and the driving part of the first intermittent sheave member 322 and is used for power connection transmission between the power motor and the driving part of the first intermittent sheave member 322, the second power transmission part 323 is arranged between the driven part of the first intermittent sheave member 322 and the top end of the first rotating shaft 2121 and is used for power connection transmission between the driven part and the top end of the first rotating shaft 2121, and particularly, the first intermittent sheave member 322 and the second power transmission part 323 can firstly pull the first rotating shaft 2121 to rotate through the first power transmission part 321, the first intermittent sheave member 322 and the second power transmission part 323 in a traction state in a running period, and the rotating angle is equal to the included angle between two adjacent groups of mounting holes, then, the driving member of the first intermittent sheave member 322 in the disengaged state is pulled by the first power transmission member 321 to continue rotating, and the driven member/second power transmission member 323/first rotating shaft 2121 of the first intermittent sheave member 322 is stationary.

The second power transmission mechanism 330 includes a trigger member and a transmission member, the trigger member includes a trigger disc 331, a driving block 332, a sliding rod 333 and a trigger block 334, the trigger disc 331 is coaxially fixed outside the driving part of the first intermittent sheave member 322, and the driving part of the first intermittent sheave member 322 rotates and pulls the trigger disc 331 to rotate synchronously.

The trigger block 334 is horizontally placed on the upper end face of the trigger disc 331, the trigger pin 3311 matched with the trigger block 334 is arranged on the upper end face of the trigger disc 331, and in the process that the first intermittent sheave member 322 driving member in the traction state rotates and the trigger disc 331 is drawn to synchronously rotate, the trigger pin 3311 rotates close to the trigger block 334, in the process that the first intermittent sheave member 322 driving member in the disengagement state rotates and the trigger disc 331 is drawn to synchronously rotate, the trigger pin 3311 contacts with the trigger block 334 and the trigger pin 3311 firstly pushes the trigger block 334 to move away from the axial center line of the trigger disc 331 and push the trigger block 334 by the withdrawing pin.

The driving block 332 is located on one side of the triggering block 334 departing from the triggering pin 3311, the sliding rod 333 is disposed between the triggering block 334 and the driving block 332, an extending direction of the sliding rod 333 is parallel to a distance direction between the triggering block 334 and the driving block 332, one end of the sliding rod 333 is fixedly connected with the triggering block 334, the other end of the sliding rod 333 is movably connected with the driving block 332 to form a sliding guide fit, a stroke spring 335 is sleeved outside a portion of the sliding rod 333 located between the driving block 332 and the triggering block 334, and the driving block 332 is driven by an elastic force of the stroke spring 335 to move away from the triggering block 334.

The side surface of the driving block 332, which is far away from the triggering block 334, is provided with a four reset spring 336, one end of the four reset spring 336 is connected with the driving block 332, the other end of the four reset spring 336 is connected with the main frame body, the driving block 332 is driven by the elastic force of the four reset spring 336 to move close to the triggering block 334, and the elastic coefficient of the stroke spring 335 is greater than that of the four reset spring 336.

The transmission member comprises a first transmission shaft 337, a second transmission shaft 338 and a transmission switching piece 339, the first transmission shaft 337 is coaxially fixed at the bottom of the first intermittent sheave member 322, a transmission block in a cylindrical structure is coaxially arranged at the top end of the first transmission shaft 337, and a lower insert tooth 3371 is arranged at the bottom end of the transmission block in a matching manner.

The second transmission shaft 338 is provided with a sleeve hole penetrating through the axial thickness of the second transmission shaft 338, the second transmission shaft 338 is coaxially movably sleeved outside the part, below the transmission block, of the first transmission shaft 337 through the sleeve hole, the first transmission shaft 337 and the second transmission shaft 338 do not interfere with each other in rotation, and the top end of the second transmission shaft 338 is provided with an upper gear shaping 3381 matched with the lower gear shaping 3371.

The transmission switching piece 339 comprises a fixed block 3391 and a switching plate 3393, the fixed block 3391 is a rectangular structure which is horizontally arranged, a fixed hole which penetrates through the upper end face of the fixed block 3391 is formed in the upper end face of the fixed block 3391, the fixed block 3391 is fixedly arranged outside the second transmission shaft 338 through the fixed hole, a switching groove 3392 is formed in the side face, parallel to the extending direction of the sliding rod 333, of the fixed block 3391, the switching groove 3392 can be divided into three parts along the extending direction of the switching groove 3392, the three parts are respectively an inclined section which is obliquely arranged and a horizontal section I/II which is horizontally arranged, the highest point of the horizontal section I and the highest point of the inclined section are communicated with each other, the lowest point of the horizontal section II and the lowest point of the inclined section are communicated with each other, the horizontal section I is also positioned on.

The switching plate 3393 has a large surface parallel to the side surface of the fixed block 3391 where the switching groove 3392 is formed, the switching plate 3393 is movably mounted on the main frame and slidably guided in a guide direction parallel to the extending direction of the slide rod 333, the switching plate 3393 has a switching pin 3394 facing the large surface of the switching groove 3392, and the free end of the switching pin 3394 is located in the switching groove 3392.

The switching plate 3393 is fixedly connected with the driving block 332.

The motion state of the second power transmission mechanism 330 can be divided into a transmission state in which the upper gear 3381 is inserted into the lower gear 3371 and the first transmission shaft 337 rotates to pull the second transmission shaft 338 to rotate synchronously, a disconnection state in which the upper gear 3381 is not inserted into the lower gear 3371, and an initial state of the second power transmission mechanism 330 is a disconnection state.

The state switching process of the second power transmission mechanism 330 is specifically represented as: in the process that the driving part of the first intermittent sheave member 322 in the traction state rotates and pulls the trigger disc 331 to synchronously rotate, the trigger pin 3311 rotates close to the trigger block 334;

in the process that the driving part of the first intermittent sheave member 322 in the disengaged state rotates and pulls the trigger disc 331 to synchronously rotate, the trigger pin 3311 contacts with the trigger block 334 and the trigger pin 3311 firstly pushes the trigger block 334 to move away from the axial center line of the trigger disc 331 and pushes the trigger block 334 by the withdrawing pin;

during the movement of the trigger block 334 away from the axial center line of the trigger disc 331, the trigger block 334 moves and pulls the drive block 332 to move synchronously through the stroke spring 335, the drive block 332 operates and pulls the switching plate 3393 to move synchronously, under the matching of the switching pin 3384 and the switching groove 3392, the switching plate 3393 moves and pulls the fixed block 3391 to ascend, the fixed block 3391 ascends and pulls the second transmission shaft 338 to ascend synchronously, so that the upper gear insert 3381 is inserted into the lower gear insert 3371, the second power transmission mechanism 330 is switched to a transmission state, and during the subsequent movement of the trigger block 334 continuing away from the axial center line of the trigger disc 331, the displacement of the trigger block 334 is converted into the compression amount of the stroke spring 335;

when the trigger pin 3311 releases the pushing action on the trigger block 334, the stroke spring 335 is first gradually restored to the original state, and then the elastic force of the return spring 336 causes the second power transmission mechanism 330 to be restored to the original state, i.e. switched to the off state.

The third power transmission mechanism 340 includes a third power transmission member 341, a second intermittent sheave member 342, and a fourth power transmission member 343, the second intermittent sheave member 342 is an intermittent sheave structure, the driving/driven members of the second intermittent sheave member 342 are both axially perpendicular to the ground and both movably mounted on the main frame body and can axially rotate around itself, and the motion state of the second intermittent sheave member 342 can be divided into a traction state in which the driving member contacts the driven member and the driving member pulls the driven member to synchronously rotate, and a disengagement state in which the driving member disengages from the driven member and the driving member fails to continuously pull the driven member to rotate.

The third power transmission member 341 is an accelerating pulley transmission structure, the third power transmission member 341 is disposed between the second transmission shaft 338 and the driving member of the second intermittent sheave member 342 and is used for power connection transmission therebetween, and particularly, in the process that the driving member of the first intermittent sheave member 322 pulls the first transmission shaft 337 to rotate for a period, the first transmission shaft 337 pulls the driving member of the second intermittent sheave member 342 to rotate for a period through the second power transmission mechanism 330 in a transmission state.

The fourth power transmission member 343 is a belt transmission structure, and the fourth power transmission member 343 is disposed between the driven member of the second intermittent sheave member 342 and the bottom end of the second rotating shaft 2131 and is used for power connection transmission therebetween, and particularly, in a period of rotation of the driving member of the second intermittent sheave member 342, the second intermittent sheave member 342 in a traction state first pulls the second rotating shaft 2131 to rotate synchronously at a rotation angle equal to an included angle between the vent hole and an adjacent mounting hole, and then the second intermittent sheave member 342 returns to a disengaged state.

When power device 300 runs a cycle, the rotating die injection molding device 200 completes one-time spherical plastic particle molding synchronously, and the matching process of the two is as follows:

the power motor 310 pulls the first rotating shaft 2121 to rotate through the first power transmission piece 321, the first intermittent sheave member 322 and the second power transmission piece 323 in a pulling state, and the rotating angle is equal to the included angle between the two adjacent groups of mounting holes, and the process is that the first mold 2124 filled with the molten plastic required by one-time spherical molding and the corresponding second mold 2133 rotate to a position right below the pressure injection member 214;

then, the power motor 310 pulls the driving part of the first intermittent sheave member 322 in the disengaged state to continue rotating through the first power transmission part 321, and the continuous rotation of the driving part of the first intermittent sheave member 322 can make the second power transmission mechanism 330 switch from the disconnected state to the transmission state, where the switching process is a process in which the molten plastic is molded into a spherical particle structure;

then, in the process that the second power transmission mechanism 330 is in the transmission state, the second power transmission mechanism 330 enables the driving part of the second intermittent sheave member 342 to rotate for a period, firstly, the second intermittent sheave member 342 in the traction state pulls the second rotating shaft 2131 to rotate synchronously, the rotating angle is equal to the included angle between the vent hole and the adjacent mounting hole, and the process is the process that the second mold 2133 filled with spherical plastic particles rotates to a position right below the discharging hole communicated with the highest point of the discharging guide cylinder 217;

then, the second intermittent sheave member 342 is switched to the disengaged state, and the remaining operation cycle of the power motor 310 is the discharging process of the spherical plastic particles.

Claims

1. The plastic particle forming machine is characterized by comprising a main frame body, wherein a raw material melting device, a rotary die pressure injection forming device and a power device are arranged on the main frame body, the raw material melting device is used for heating and melting plastic raw materials, filtering impurities of molten plastic and then conveying the molten plastic to the rotary die pressure injection forming device, the rotary die pressure injection forming device is used for receiving the molten plastic and processing the molten plastic into spherical plastic particles, and the power device is used for providing operation power for the rotary die pressure injection forming device;

conveying mechanism be located the below of melting jar, conveying mechanism includes conveying motor, pipeline, pushes away the material screw rod, the pipeline level is fixed in on the body frame body and pipeline's a mouth of pipe department matches installs the delivery end cover, another mouth of pipe is provided with linking bridge, pipeline department that the pipeline was provided with linking bridge still coaxial matching installs delivery connection, pipeline's external connection connects has fixed connector three, fixed connector three is vertical arranging and its top that is located pipeline and it still is close to the delivery end cover, pipeline's outside match install and be used for carrying out the heating element that heats it.

2. The plastic particle forming machine as claimed in claim 1, wherein the pushing screw and the conveying pipe are coaxially arranged, the power output end of the pushing screw is movably connected with the connecting support, the power input end of the pushing screw penetrates through the conveying pipe and the conveying end cover and is located outside the conveying pipe, the pushing screw can axially rotate around itself, and the pushing screw rotates and pulls the molten plastic to be conveyed towards the conveying joint;

3. The plastic pellet molding machine as claimed in claim 2, wherein said rotary mold injection molding device is located at a side of the power output end of the pushing screw away from the power input end of the rotary mold injection molding device, the rotary mold injection molding device comprises a rotary mold injection molding mechanism and an injection molding mechanism, the injection molding mechanism is used for receiving the molten plastic conveyed by the conveying mechanism and injecting the molten plastic into the rotary mold injection molding mechanism, and the rotary mold injection molding mechanism is used for processing the molten plastic into a spherical plastic pellet structure;

4. The plastic particle forming machine as claimed in claim 3, wherein the second rotary mold body is a disc structure coaxially arranged with the first rotary mold body and is located below the first rotary mold body, the second rotary mold body is coaxially provided with a second rotary shaft, two ends of the second rotary shaft are respectively located at the upper side and the lower side of the second rotary mold body, a one-way ratchet member is arranged between the top end of the second rotary shaft and the bottom end of the first rotary shaft and is coaxially power-connected through the one-way ratchet member, and the one-way ratchet member is used for pulling the second rotary shaft to synchronously rotate while the power device drives the first rotary shaft to rotate and failing to pull the second rotary shaft to synchronously rotate while the power device drives the second rotary shaft to rotate;

5. The plastic particle forming machine as claimed in claim 4, wherein the rotary die end cover is a disc structure arranged coaxially with the rotary die body and is located above the rotary die body I, the upper end face of the rotary die body I is coaxially provided with an installation step, the rotary die end cover is coaxially provided with a rotary hole penetrating through the axial thickness of the rotary die end cover, the rotary die end cover is coaxially and movably sleeved outside the installation step through the rotary hole, the lower end face of the rotary die end cover is tightly contacted with the upper end face of the rotary die body I, and the rotary die end cover is also fixedly connected with the main frame body;

6. The plastic particle forming machine as claimed in claim 5, wherein the upper opening end of the guide sleeve is coaxially and fittingly provided with a guide end cover in a circular structure, the injection member comprises a guide rod coaxially arranged with the guide sleeve, the top end of the guide rod is coaxially provided with a contact block, the bottom end of the guide rod penetrates through the guide end cover and is positioned in the guide sleeve, the bottom end of the guide rod is also provided with a pressing block, and sliding guide fit is formed between the guide rod and the guide end cover and between the pressing block and the guide sleeve;

7. The plastic granule molding machine as claimed in claim 5, wherein the injection mechanism comprises an injection pipe and a pressure reducing member, the injection pipe is fixed on the main frame body and has one end coaxially connected with the delivery connector and the other end in a closed structure, the outer circumferential surface of the injection pipe is connected with an injection nozzle and the injection nozzle is close to the closed end of the injection pipe, the free end of the injection nozzle is fixedly connected with the upper end surface of the rotary die end cover, and the injection nozzle is coaxially connected with the feed chute;

8. A plastic particle forming machine as claimed in claim 5 wherein the power means includes a power motor, a first power transmission mechanism, a second power transmission mechanism, and a third power transmission mechanism, the power motor is vertically fixed to the main frame, the first power transmission mechanism is used for power connection and transmission between the power motor and the top end of the first rotating shaft, the second power transmission mechanism is used for power connection and transmission between the first power transmission mechanism and the third power transmission mechanism, and the third power transmission mechanism is used for receiving the power of the second power transmission mechanism and transmitting it to the second rotating shaft;

9. The plastic pellet molding machine as claimed in claim 8, wherein said second power transmission mechanism comprises a trigger member and a transmission member, the trigger member comprises a trigger disk, a driving block, a sliding rod and a trigger block, the trigger disk is coaxially fixed outside the driving part of the first intermittent sheave member, the driving part of the first intermittent sheave member rotates and pulls the trigger disk to rotate synchronously;

the switching plate is fixedly connected with the driving block;

10. The plastic granule molding machine as claimed in claim 9, wherein the third power transmission mechanism comprises a third power transmission member, a second intermittent sheave member and a fourth power transmission member, the second intermittent sheave member is an intermittent sheave structure, the driving/driven members of the second intermittent sheave member are both axially perpendicular to the ground and both movably mounted on the main frame body and axially rotatable around itself, the motion state of the second intermittent sheave member can be divided into a traction state in which the driving member contacts with the driven member and the driving member pulls the driven member to synchronously rotate, and a disengagement state in which the driving member is out of contact with the driven member and the driving member fails to continuously pull the driven member to rotate;