阅读说明：本技术 用于塑料泡沫回收利用的熔融造粒工艺 (Melting granulation process for recycling plastic foam ) 是由 祝磊 潘长霞 于 2019-10-29 设计创作，主要内容包括：本发明公布了用于塑料泡沫回收利用的熔融造粒工艺,其步骤在于：塑料熔融装置使塑料碎片转换为熔融态后输送给转模成型装置；熔融态塑料被输送至转模的模具孔内,随后间歇驱动机构驱使模具轴/转模转动且转动位移为相邻两组模具孔之间的距离；当与进料孔接通并储存有熔融态塑料的模具孔转动至与出料孔/进气孔接通时,该熔融态塑料转换为软固态,随后气动推出机构通过压缩气体使软固态塑料经成型出料管向外输出,同时该过程中,熔融态塑料会依次向下一组模具孔内输送,从而构成塑料输入、吹送输出的循环往复过程；软固态塑料颗粒经成型出料管输送并经循环水冷机构水冷撤销、颗粒输送机构输送、风冷吹干机构风干处理后输出。(The invention discloses a melting granulation process for recycling plastic foam, which comprises the steps of converting plastic fragments into molten state by a plastic melting device, conveying the molten state plastic to a rotary die forming device, conveying the molten state plastic to a die hole of a rotary die, driving a die shaft/rotary die to rotate by an intermittent driving mechanism, rotating and displacing the die shaft/rotary die to a distance between two adjacent die holes, converting the molten state plastic into a soft solid state when the die hole which is communicated with a feed hole and is used for storing the molten state plastic rotates to be communicated with a discharge hole/an air inlet hole, outputting the soft solid plastic outwards through a forming discharge pipe by a pneumatic push-out mechanism through compressed gas, and conveying the molten state plastic downwards into die holes in sequence in the process to form a circular reciprocating process of plastic input and output by blowing, conveying the soft solid plastic particles through the forming discharge pipe, water-cooling withdrawal by a circular water-cooling mechanism, conveying by a particle conveying mechanism, and air-drying by an air-cooling.)

1. A melting granulation process for recycling plastic foam comprises the following steps:

s1: the working personnel convey the chopped plastic fragments to a plastic melting device arranged on the mounting frame body, and the plastic melting device heats and melts the plastic fragments and converts the plastic fragments into molten state and then conveys the molten state to a rotary die forming device;

s2: receiving molten plastic by a rotary die forming device;

the rotary die forming device comprises a rotary die body, a material receiving mechanism, an intermittent driving mechanism, a pneumatic pushing mechanism and a forming discharge pipe, wherein the rotary die body is used for providing a die for forming molten plastic;

the rotary die body comprises a die shell , a die shell II, a die shaft and a rotary die, wherein the die shell and the die shell II are both of a -end open-ended and -end closed cylindrical structure, a fastener is arranged between the die shell and the open end of the die shell II, the die shell and the open end of the die shell II are coaxially and fixedly connected through the fastener, the die shell and the open end of the die shell II form a circular shell structure with two closed ends together, the die shaft is coaxially and movably arranged in the circular shell formed by the die shell and the die shell II and can rotate around the axial direction of the die shaft, and the power input end of the die shaft extends out;

the rotary die is of a cylindrical structure, the rotary die is coaxially fixed outside the die shaft and is also positioned in /two die shells, groups of end faces of the rotary die are in sealing contact with the cavity bottom of the die shell, the other groups of end faces of the rotary die are in sealing contact with the cavity bottom of the second die shell, the end face of the rotary die is provided with a die hole penetrating through the axial thickness of the rotary die, the die hole is composed of a plurality of groups of particle holes, the diameter of the particle hole is matched with the diameter of the formed plastic particles, the die holes are arranged in a plurality of groups along the circumferential direction of the rotary die in an array manner,

the closed end of the die shell faces the plastic melting device, the closed end of the die shell is provided with a feed hole and an air inlet hole which penetrate through the thickness of the die shell, the feed hole and the air inlet hole are both positioned in the diameter direction of the closed end of the die shell , which is perpendicular to the ground, the feed hole is positioned right above the air inlet hole, the feed hole and the air inlet hole are respectively communicated with the die hole, the feed hole is communicated with the plastic melting device through a material receiving mechanism, and the air inlet hole is communicated with a pneumatic pushing mechanism;

the closed end of the second die shell and the power input end of the die shaft are both positioned on the side of the second die shell , which is away from the plastic melting device, the closed end of the second die shell is provided with a discharge hole penetrating through the thickness of the second die shell, the discharge hole and the air inlet hole are coaxially arranged, and the forming discharge pipe is horizontally arranged and is fixedly connected and communicated with the discharge hole;

the plastic melting device conveys the molten plastic to the die holes of the rotary die through the material receiving mechanism and the feed holes, and then the intermittent driving mechanism drives the die shaft/the rotary die to rotate and the rotation displacement is the distance between two adjacent groups of die holes, namely the lower groups of die holes rotate to be communicated with the feed holes;

s3, when the die hole which is communicated with the feed hole and stores the molten plastic rotates to be communicated with the discharge hole/the air inlet hole, the molten plastic is converted into soft solid, then the pneumatic push-out mechanism leads the soft solid plastic to be output outwards through the forming discharge pipe by compressed gas, as the die hole consists of a plurality of groups of particle holes, the soft solid plastic is blown out in a particle shape, and simultaneously, the molten plastic is sequentially conveyed downwards to groups of die holes in the process, thereby forming a circular reciprocating process of plastic input and blown output;

s4: the free end of the forming discharge pipe is connected and communicated with a cooling output device;

the cooling output device comprises a circulating water cooling mechanism, a particle conveying mechanism and an air cooling blow-drying mechanism, wherein the circulating water cooling mechanism is used for receiving soft solid plastic particles output by the forming discharge pipe and carrying out water cooling forming treatment on the soft solid plastic particles, the particle conveying mechanism is used for conveying the plastic particles which are water cooled and formed into solid particles into the air cooling blow-drying mechanism, and the air cooling blow-drying mechanism is used for outputting the plastic particles after drying moisture on the surfaces of the plastic particles in an air cooling mode;

soft solid plastic particles are conveyed into the circulating water cooling mechanism through the forming discharge pipe, the circulating water cooling mechanism cools the soft solid plastic particles in a water cooling mode to finally enable the soft solid plastic particles to be solid particles, then the particle conveying mechanism conveys the solid particle plastic to the air-cooling blow-drying mechanism, and the air-cooling blow-drying mechanism outputs the solid particle plastic after the surface moisture air-drying treatment is carried out on the solid particle plastic in an air-cooling mode.

2. The melting and granulating process for recycling of plastic foams as claimed in claim 1, wherein the plastic melting device comprises a melting and separating mechanism, a melting and conveying mechanism and a power mechanism, the melting and separating mechanism is used for melting and processing plastic fragments and simultaneously separating molten plastic from impurities such as stones, the melting and conveying mechanism is used for receiving the molten plastic and conveying the molten plastic into the rotary die forming device, and the power mechanism is used for providing power for the operation of the melting and separating mechanism and the melting and conveying mechanism;

the melting and separating mechanism comprises a melting tank, a transition pipeline, a separating pipeline, a packing auger and a storage shell, wherein the melting tank is of a tank body structure which is axially vertical to the ground and has two open ends;

the transition pipeline can be divided into two parts which are respectively a vertical section and an inclined section, the vertical section is axially vertical to the ground, the vertical section is fixed on the mounting frame body, an upper pipe opening of the vertical section is fixedly connected and communicated with a lower opening end of the melting tank, the inclined section is obliquely fixed on the mounting frame body, the inclined section and the vertical section are connected and communicated, the communicated position is positioned at the middle position of the inclined section/the vertical section, a filter plate for filtering impurities such as stones in molten plastic is arranged at the communicated position, the inclined section and the vertical section are arranged in a cross mode, a lower pipe opening of the inclined section of the transition pipeline is matched and provided with a closed end cover, and the closed end cover is coaxially provided with a through hole;

the separation pipeline is obliquely fixed on the mounting frame body, the oblique direction of the separation pipeline is parallel to the oblique direction of the oblique section of the transition pipeline, a lower pipe orifice of the separation pipeline is fixedly connected and communicated with an upper pipe orifice of the oblique section of the transition pipeline, and a sealing end cover is installed at the upper pipe orifice of the separation pipeline in a matched manner;

the outer circular surface of the separation pipeline is provided with a discharging nozzle, the discharging nozzle is positioned at the bottom of the separation pipeline and close to an upper pipe opening of the separation pipeline, the storage shell is of a shell structure with an opening at the upper end and a closed lower end and is fixed on the mounting frame body, and the storage shell is also positioned right below the discharging nozzle;

auger and separation pipeline between be coaxial arranging, the end of auger with set up the coaxial swing joint of orificial end cover on the separation pipeline, the other end of auger passes the lower mouth of pipe of separation pipeline in proper order, the transition pipeline slope section, set up the through hole on the end cover and be located the transition pipeline below, the auger can rotate around self axial, the packing ring is installed in the matching between auger and the through hole, it dodges the hole still to be provided with a plurality of groups at even interval on the helicoid of auger, dodge the hole and be used for rotating and carrying impurity in-process such as stone and avoiding carrying away the molten state plastics at the auger.

3. The melting and granulating process for recycling the plastic foam as claimed in claim 2, wherein the melting and conveying mechanism is located below the melting and separating mechanism, the melting and conveying mechanism comprises a conveying pipeline and a pushing screw rod, the conveying pipeline is of a pipeline structure with openings at two ends and is horizontally fixed on the mounting frame body, a connecting nozzle is arranged outside the conveying pipeline and is located right above the conveying pipeline, and the connecting nozzle is also fixedly connected and communicated with a lower pipe orifice of a vertical section of the transition pipeline;

an opening end of the conveying pipeline is provided with an installation end cover in a matching way, the installation end cover is coaxially provided with an extending hole, and the other opening end of the conveying pipeline is provided with a connecting bracket;

the pushing screw rod and the conveying pipeline are coaxially arranged, the end of the pushing screw rod is movably connected with the connecting support, the other end of the pushing screw rod penetrates through an extending hole formed in the mounting end cover and is positioned outside the conveying pipeline, the pushing screw rod can axially rotate around the pushing screw rod, and a sealing ring is arranged between the pushing screw rod and the extending hole in a matched mode;

and a heat-insulating heating element which is used for keeping the plastic in the conveying pipeline in a molten state all the time is arranged outside the conveying pipeline in a matching way.

4. The melting and granulating process for recycling of plastic foam as claimed in claim 3, wherein the power mechanism comprises a power motor, the power motor is fixedly mounted on the mounting frame body, the axial direction of an output shaft of the power motor is parallel to the axial direction of the pushing screw, a power transmission member is arranged between the power output end of the power motor and the end part of the pushing screw outside the conveying pipeline, the power transmission member and the pushing screw are in power connection transmission through a power transmission member , and the power transmission member comprises a driving pulley coaxially fixed outside the power output end of the power motor, a driven pulley coaxially fixed outside the pushing screw, and a conveyor belt arranged between the driving pulley and the driven pulley;

the material pushing screw rod is arranged between the end part of the conveying pipeline outside and the end part of the packing auger below the transition pipeline, a power transmission part II is arranged between the end part of the conveying pipeline outside and the end part of the packing auger below the transition pipeline, power connection transmission is carried out between the end part of the conveying pipeline and the packing auger through the power transmission part II, the power transmission part II comprises a driving bevel gear coaxially fixed outside the material pushing screw rod and a driven bevel gear coaxially fixed outside the packing auger, and the driving bevel gear is meshed with the driven bevel gear.

5. The melting and granulating process for recycling the plastic foam as claimed in claim 3, wherein the rotary die forming device is positioned at the side of the pipe orifice of the conveying pipeline, which is provided with the connecting bracket, and is opposite to the pipe orifice of the conveying pipeline, which is provided with the mounting end cover;

the axial directions of the die shell and the die shell II are both parallel to the axial direction of the pushing screw.

6. The melting and granulating process for recycling the plastic foam as claimed in claim 5, wherein the material receiving mechanism comprises a horizontally arranged material receiving pipe, the end of the material receiving pipe is fixedly connected and communicated with the pipe orifice of the conveying pipe provided with the connecting bracket, and the other end of the material receiving pipe is fixedly connected and communicated with the material inlet hole;

the pressure relief component is connected and communicated with the material receiving pipe and comprises an installation cylinder, a piston and a pressure relief spring, the installation cylinder is of a circular cylinder structure with an -end opening and a -end closing, the opening end of the installation cylinder is fixed outside the material receiving pipe, and the installation cylinder and the material receiving pipe are connected and communicated;

the piston is positioned in the mounting cylinder, a sealed sliding guide fit is formed between the piston and the mounting cylinder, and the piston is made of heat-resistant materials;

the pressure relief spring is arranged between the bottom of the mounting cylinder cavity and the piston, and the piston is driven to move close to the material receiving pipe by the elasticity of the pressure relief spring.

7. The melting granulation process for plastic foam recycling according to claim 6, wherein the intermittent driving mechanism comprises a driving motor, a grooved pulley, a shifting shaft and a shifting block, the axial direction of the driving motor is parallel to the axial direction of the die shaft, the driving motor is fixed on the mounting frame body, the axial direction of the shifting shaft is parallel to the axial direction of the die shaft, the shifting shaft is movably mounted at the closed end of the die shell II and can rotate around the axial direction of the shifting shaft, a power transmission part III is arranged between the power output end of the driving motor and the power input end of the shifting shaft, power connection transmission is carried out between the power output end of the driving motor and the power input end of the shifting shaft through the power transmission part III, and the power transmission part III is of a belt transmission power transmission;

the grooved pulley is coaxially fixed outside the power input end of the die shaft, the outer circular surface of the grooved pulley is provided with intermittent grooves penetrating through the axial thickness of the grooved pulley, and a plurality of groups of intermittent grooves are arrayed in the circumferential direction of the grooved pulley;

the shifting block is fixed outside the shifting shaft, a cylindrical pin matched with the intermittent groove is further arranged on the shifting block, and in the period process of rotating the shifting shaft, the cylindrical pin can rotate after being located in the intermittent groove and then being separated from the intermittent groove, and finally the rotary die rotates, and the rotating displacement is equal to the distance between two adjacent groups of die holes;

the pneumatic pushing mechanism comprises a connecting air pipe and a connector, the connector is fixedly connected and communicated with the air inlet hole, the end of the connecting air pipe is connected and communicated with the connector, and the other end of the connecting air pipe is connected and communicated with equipment for providing compressed air to the outside.

8. The melting granulation process for recycling of plastic foam as claimed in claim 1, wherein the circulating water cooling mechanism comprises a water tank, a water inlet pipeline and a water outlet pipeline, the water tank is fixedly installed on the installation frame body, and the forming discharge pipe is fixedly connected and communicated with the water tank;

the end of the water inlet pipeline is connected and communicated with water inlet equipment, the other end of the water inlet pipeline is connected and communicated with a water tank, the end of the water outlet pipeline is connected and communicated with the water tank, the other end of the water outlet pipeline is connected and communicated with cooling equipment, and the cooling equipment is connected and communicated with the water inlet equipment;

and the second die shell and the forming discharge pipe are made of heat-conducting materials.

9. The melting granulation process for recycling of plastic foam according to claim 8, wherein the granule conveying mechanism comprises a conveying motor, two sets of rotating rollers and a conveying belt, the conveying motor is horizontally fixed on the mounting frame, the axial direction of the rotating rollers is parallel to the axial direction of the conveying motor, sets of rotating rollers are movably mounted at the bottom of the water tank, another sets of rotating rollers are movably mounted on the mounting frame and above the water tank, the two sets of rotating rollers can rotate around the self axial direction, a coupler is arranged between the power output end of the conveying motor and any sets of rotating rollers, and the two sets of rotating rollers are coaxially and fixedly connected through the coupler;

the conveying belt is arranged between the two groups of rotating rollers, the surface of the conveying belt is fixedly provided with containing plates, the containing plates and the conveying belt are vertically arranged, and the containing plates are arranged in a plurality of groups in an array manner along the extending direction of the conveying belt;

a plurality of groups of draining holes are arranged on the containing plate in an array manner;

the bottom of basin be trapezium structure and its horizontal cross-sectional area by supreme increasing progressively down, the chamber wall of basin and shaping discharging pipe switch-on still is fixed with the guide board, the guide board is the slope and arranges and the top and basin fixed connection, the bottom of guide board are located directly over the minimum of conveyer belt.

10. The melting granulation process for recycling of the plastic foam according to claim 9, wherein the air-cooling blow-drying mechanism comprises a fixed shell, a fixed plate and a fan, the fixed shell is fixed on the installation frame body, a material receiving gap is formed in the fixed shell and is located right below the highest point of the conveying belt, a stretching output gap is further formed in the fixed shell, the output gap and the material receiving gap are located on the same inclined straight line, and the output gap is located below the material receiving gap;

the fixing plates are fixed in the fixed shell, the fixing plates are arranged in an inclined mode, the end portion, facing the material receiving gap, of each fixing plate is the highest point, the end portion, facing the output gap, of each fixing plate is the lowest point, the fixing plates are arranged in an array mode along the direction from the material receiving gap to the output gap, and the fixing plates are distributed in a step mode;

the fan is fixed in the fixed shell and is positioned right below the fixed plate, and a plurality of groups of air outlets are arranged on the part of the fixed shell above the fixed plate.

Technical Field

The invention relates to the field of plastic recycling, in particular to a process for manufacturing plastic particles.

Background

With the development of economy and the continuous progress of science and technology in China, the application range of plastic particles is more and more , types of molding machines for manufacturing plastic materials into specific shapes are adopted in a granulator, in the process of cooling and extrusion molding after melting, due to the difference of structural design, the cooling efficiency is low, cooling of molten raw materials cannot be achieved, the production efficiency can be reduced, meanwhile, in the process of granulating, due to the difference of cutting, part of particles fly, the environment is polluted, and the health of workers is damaged.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide processes for manufacturing plastic granules, wherein a filter plate is adopted to filter impurities such as stones and the like on molten plastic, the molten plastic can be kept in a molten state all the time in the conveying process, the molten plastic is enabled to be in a soft solid state after standing for periods and then output in the granule forming process, the output process is smooth, the adhesion phenomenon between two groups of adjacent plastic granules can be effectively avoided, the subsequent granule cooling is greatly facilitated, the solid plastic granules can be output after being subjected to surface moisture air drying in the cooling output process, and the granules cannot fly in the output process.

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

A melting granulation process for recycling plastic foam comprises the following steps:

s1: the working personnel convey the chopped plastic fragments to a plastic melting device arranged on the mounting frame body, and the plastic melting device heats and melts the plastic fragments and converts the plastic fragments into molten state and then conveys the molten state to a rotary die forming device;

s2: receiving molten plastic by a rotary die forming device;

the rotary die forming device comprises a rotary die body, a material receiving mechanism, an intermittent driving mechanism, a pneumatic pushing mechanism and a forming discharge pipe, wherein the rotary die body is used for providing a die for forming molten plastic;

the rotary die body comprises a die shell , a die shell II, a die shaft and a rotary die, wherein the die shell and the die shell II are both of a -end open-ended and -end closed cylindrical structure, a fastener is arranged between the die shell and the open end of the die shell II, the die shell and the open end of the die shell II are coaxially and fixedly connected through the fastener, the die shell and the open end of the die shell II form a circular shell structure with two closed ends together, the die shaft is coaxially and movably arranged in the circular shell formed by the die shell and the die shell II and can rotate around the axial direction of the die shaft, and the power input end of the die shaft extends out;

the rotary die is of a cylindrical structure, the rotary die is coaxially fixed outside the die shaft and is also positioned in /two die shells, groups of end faces of the rotary die are in sealing contact with the cavity bottom of the die shell, the other groups of end faces of the rotary die are in sealing contact with the cavity bottom of the second die shell, the end face of the rotary die is provided with a die hole penetrating through the axial thickness of the rotary die, the die hole is composed of a plurality of groups of particle holes, the diameter of the particle hole is matched with the diameter of the formed plastic particles, the die holes are arranged in a plurality of groups along the circumferential direction of the rotary die in an array manner,

the closed end of the die shell faces the plastic melting device, the closed end of the die shell is provided with a feed hole and an air inlet hole which penetrate through the thickness of the die shell, the feed hole and the air inlet hole are both positioned in the diameter direction of the closed end of the die shell , which is perpendicular to the ground, the feed hole is positioned right above the air inlet hole, the feed hole and the air inlet hole are respectively communicated with the die hole, the feed hole is communicated with the plastic melting device through a material receiving mechanism, and the air inlet hole is communicated with a pneumatic pushing mechanism;

the closed end of the second die shell and the power input end of the die shaft are both positioned on the side of the second die shell , which is away from the plastic melting device, the closed end of the second die shell is provided with a discharge hole penetrating through the thickness of the second die shell, the discharge hole and the air inlet hole are coaxially arranged, and the forming discharge pipe is horizontally arranged and is fixedly connected and communicated with the discharge hole;

the plastic melting device conveys the molten plastic to the die holes of the rotary die through the material receiving mechanism and the feed holes, and then the intermittent driving mechanism drives the die shaft/the rotary die to rotate and the rotation displacement is the distance between two adjacent groups of die holes, namely the lower groups of die holes rotate to be communicated with the feed holes;

s3, when the die hole which is communicated with the feed hole and stores the molten plastic rotates to be communicated with the discharge hole/the air inlet hole, the molten plastic is converted into soft solid, then the pneumatic push-out mechanism leads the soft solid plastic to be output outwards through the forming discharge pipe by compressed gas, as the die hole consists of a plurality of groups of particle holes, the soft solid plastic is blown out in a particle shape, and simultaneously, the molten plastic is sequentially conveyed downwards to groups of die holes in the process, thereby forming a circular reciprocating process of plastic input and blown output;

s4: the free end of the forming discharge pipe is connected and communicated with a cooling output device;

the cooling output device comprises a circulating water cooling mechanism, a particle conveying mechanism and an air cooling blow-drying mechanism, wherein the circulating water cooling mechanism is used for receiving soft solid plastic particles output by the forming discharge pipe and carrying out water cooling forming treatment on the soft solid plastic particles, the particle conveying mechanism is used for conveying the plastic particles which are water cooled and formed into solid particles into the air cooling blow-drying mechanism, and the air cooling blow-drying mechanism is used for outputting the plastic particles after drying moisture on the surfaces of the plastic particles in an air cooling mode;

soft solid plastic particles are conveyed into the circulating water cooling mechanism through the forming discharge pipe, the circulating water cooling mechanism cools the soft solid plastic particles in a water cooling mode to finally enable the soft solid plastic particles to be solid particles, then the particle conveying mechanism conveys the solid particle plastic to the air-cooling blow-drying mechanism, and the air-cooling blow-drying mechanism outputs the solid particle plastic after the surface moisture air-drying treatment is carried out on the solid particle plastic in an air-cooling mode.

is improved and optimized as the technical proposal.

The plastic melting device comprises a melting separation mechanism, a melting conveying mechanism and a power mechanism, wherein the melting separation mechanism is used for melting plastic fragments and separating molten plastic from impurities such as stones, the melting conveying mechanism is used for receiving the molten plastic and conveying the molten plastic into the rotary die forming device, and the power mechanism is used for providing power for the operation of the melting separation mechanism and the melting conveying mechanism.

The melting and separating mechanism comprises a melting tank, a transition pipeline, a separating pipeline, a packing auger and a storage shell, wherein the melting tank is of a tank body structure which is axially vertical to the ground and has two open ends;

the transition pipeline can be divided into two parts which are respectively a vertical section and an inclined section, the vertical section is axially vertical to the ground, the vertical section is fixed on the mounting frame body, an upper pipe opening of the vertical section is fixedly connected and communicated with a lower opening end of the melting tank, the inclined section is obliquely fixed on the mounting frame body, the inclined section and the vertical section are connected and communicated, the communicated position is positioned at the middle position of the inclined section/the vertical section, a filter plate for filtering impurities such as stones in molten plastic is arranged at the communicated position, the inclined section and the vertical section are arranged in a cross mode, a lower pipe opening of the inclined section of the transition pipeline is matched and provided with a closed end cover, and the closed end cover is coaxially provided with a through hole;

the separation pipeline is obliquely fixed on the mounting frame body, the oblique direction of the separation pipeline is parallel to the oblique direction of the oblique section of the transition pipeline, a lower pipe orifice of the separation pipeline is fixedly connected and communicated with an upper pipe orifice of the oblique section of the transition pipeline, and a sealing end cover is installed at the upper pipe orifice of the separation pipeline in a matched manner;

the outer circular surface of the separation pipeline is provided with a discharging nozzle, the discharging nozzle is positioned at the bottom of the separation pipeline and close to an upper pipe opening of the separation pipeline, the storage shell is of a shell structure with an opening at the upper end and a closed lower end and is fixed on the mounting frame body, and the storage shell is also positioned right below the discharging nozzle;

auger and separation pipeline between be coaxial arranging, the end of auger with set up the coaxial swing joint of orificial end cover on the separation pipeline, the other end of auger passes the lower mouth of pipe of separation pipeline in proper order, the transition pipeline slope section, set up the through hole on the end cover and be located the transition pipeline below, the auger can rotate around self axial, the packing ring is installed in the matching between auger and the through hole, it dodges the hole still to be provided with a plurality of groups at even interval on the helicoid of auger, dodge the hole and be used for rotating and carrying impurity in-process such as stone and avoiding carrying away the molten state plastics at the auger.

is improved and optimized as the technical proposal.

The melting and conveying mechanism is positioned below the melting and separating mechanism and comprises a conveying pipeline and a pushing screw rod, the conveying pipeline is of a pipeline structure with openings at two ends and is horizontally fixed on the mounting frame body, a connecting nozzle is arranged outside the conveying pipeline and is positioned right above the conveying pipeline, and the connecting nozzle is also fixedly connected and communicated with a lower pipe orifice of a vertical section of the transition pipeline;

an opening end of the conveying pipeline is provided with an installation end cover in a matching way, the installation end cover is coaxially provided with an extending hole, and the other opening end of the conveying pipeline is provided with a connecting bracket;

the pushing screw rod and the conveying pipeline are coaxially arranged, the end of the pushing screw rod is movably connected with the connecting support, the other end of the pushing screw rod penetrates through an extending hole formed in the mounting end cover and is positioned outside the conveying pipeline, the pushing screw rod can axially rotate around the pushing screw rod, and a sealing ring is arranged between the pushing screw rod and the extending hole in a matched mode;

and a heat-insulating heating element which is used for keeping the plastic in the conveying pipeline in a molten state all the time is arranged outside the conveying pipeline in a matching way.

is improved and optimized as the technical proposal.

The power mechanism comprises a power motor, the power motor is fixedly mounted on the mounting frame body, the axial direction of an output shaft of the power motor is parallel to the axial direction of the pushing screw, a power transmission piece is arranged between the power output end of the power motor and the end part of the pushing screw, which is positioned outside the conveying pipeline, and the power transmission piece and the pushing screw are in power connection transmission through a power transmission piece , and the power transmission piece comprises a driving belt wheel coaxially fixed outside the power output end of the power motor, a driven belt wheel coaxially fixed outside the pushing screw and a conveying belt arranged between the driving belt wheel and the driven belt wheel;

the material pushing screw rod is arranged between the end part of the conveying pipeline outside and the end part of the packing auger below the transition pipeline, a power transmission part II is arranged between the end part of the conveying pipeline outside and the end part of the packing auger below the transition pipeline, power connection transmission is carried out between the end part of the conveying pipeline and the packing auger through the power transmission part II, the power transmission part II comprises a driving bevel gear coaxially fixed outside the material pushing screw rod and a driven bevel gear coaxially fixed outside the packing auger, and the driving bevel gear is meshed with the driven bevel gear.

is improved and optimized as the technical proposal.

The rotary die forming device is positioned on the side of the pipe orifice of the conveying pipeline, which is provided with the connecting support and deviates from the pipe orifice of the conveying pipeline, which is provided with the mounting end cover;

the axial directions of the die shell and the die shell II are both parallel to the axial direction of the pushing screw.

is improved and optimized as the technical proposal.

The material receiving mechanism comprises material receiving pipes which are horizontally arranged, wherein the end of each material receiving pipe is fixedly connected and communicated with a pipe orifice of the conveying pipe, which is provided with a connecting bracket, and the other end of each material receiving pipe is fixedly connected and communicated with a material inlet hole;

the pressure relief component is connected and communicated with the material receiving pipe and comprises an installation cylinder, a piston and a pressure relief spring, the installation cylinder is of a circular cylinder structure with an -end opening and a -end closing, the opening end of the installation cylinder is fixed outside the material receiving pipe, and the installation cylinder and the material receiving pipe are connected and communicated;

the piston is positioned in the mounting cylinder, a sealed sliding guide fit is formed between the piston and the mounting cylinder, and the piston is made of heat-resistant materials;

the pressure relief spring is arranged between the bottom of the mounting cylinder cavity and the piston, and the piston is driven to move close to the material receiving pipe by the elasticity of the pressure relief spring.

is improved and optimized as the technical proposal.

The intermittent driving mechanism comprises a driving motor, a grooved pulley, a shifting shaft and a shifting block, wherein the axial direction of the driving motor is parallel to the axial direction of the die shaft, the driving motor is fixed on the mounting frame body, the axial direction of the shifting shaft is parallel to the axial direction of the die shaft, the shifting shaft is movably mounted at the closed end of the die shell II and can rotate around the axial direction of the shifting shaft, a power transmission part III is arranged between the power output end of the driving motor and the power input end of the shifting shaft, power connection transmission is carried out between the power output end of the driving motor and the power input end of the shifting shaft through the power transmission part III, and the power transmission part III is of a belt;

the grooved pulley is coaxially fixed outside the power input end of the die shaft, the outer circular surface of the grooved pulley is provided with intermittent grooves penetrating through the axial thickness of the grooved pulley, and a plurality of groups of intermittent grooves are arrayed in the circumferential direction of the grooved pulley;

the shifting block is fixed outside the shifting shaft, a cylindrical pin matched with the intermittent groove is further arranged on the shifting block, and in the period process of rotating the shifting shaft, the cylindrical pin can rotate after being located in the intermittent groove and then being separated from the intermittent groove, and finally the rotary die rotates, and the rotating displacement is equal to the distance between two adjacent groups of die holes;

the pneumatic pushing mechanism comprises a connecting air pipe and a connector, the connector is fixedly connected and communicated with the air inlet hole, the end of the connecting air pipe is connected and communicated with the connector, and the other end of the connecting air pipe is connected and communicated with equipment for providing compressed air to the outside.

is improved and optimized as the technical proposal.

The circulating water cooling mechanism comprises a water tank, a water inlet pipeline and a water outlet pipeline, the water tank is fixedly arranged on the mounting frame body, and the forming discharge pipe is fixedly connected and communicated with the water tank;

the end of the water inlet pipeline is connected and communicated with water inlet equipment, the other end of the water inlet pipeline is connected and communicated with a water tank, the end of the water outlet pipeline is connected and communicated with the water tank, the other end of the water outlet pipeline is connected and communicated with cooling equipment, and the cooling equipment is connected and communicated with the water inlet equipment;

and the second die shell and the forming discharge pipe are made of heat-conducting materials.

is improved and optimized as the technical proposal.

The particle conveying mechanism comprises a conveying motor, rotating rollers and a conveying belt, wherein the conveying motor is horizontally fixed on an installation frame body, the axial direction of the rotating rollers is parallel to the axial direction of the conveying motor, the rotating rollers are provided with two groups, groups of rotating rollers are movably installed at the bottom of a water tank, groups of rotating rollers are movably installed on the installation frame body and positioned above the water tank, the two groups of rotating rollers can rotate around the self axial direction, a coupler is arranged between the power output end of the conveying motor and any groups of rotating rollers, and the two groups of rotating rollers are coaxially and fixedly connected through the coupler;

the conveying belt is arranged between the two groups of rotating rollers, the surface of the conveying belt is fixedly provided with containing plates, the containing plates and the conveying belt are vertically arranged, and the containing plates are arranged in a plurality of groups in an array manner along the extending direction of the conveying belt;

a plurality of groups of draining holes are arranged on the containing plate in an array manner;

the bottom of basin be trapezium structure and its horizontal cross-sectional area by supreme increasing progressively down, the chamber wall of basin and shaping discharging pipe switch-on still is fixed with the guide board, the guide board is the slope and arranges and the top and basin fixed connection, the bottom of guide board are located directly over the minimum of conveyer belt.

is improved and optimized as the technical proposal.

The air-cooled blow-drying mechanism comprises a fixed shell, a fixed plate and a fan, wherein the fixed shell is fixed on the mounting frame body, a material receiving notch is formed in the fixed shell and is located right below the highest point of the conveying belt, a stretching output notch is further formed in the fixed shell, the output notch and the material receiving notch are located on the same inclined straight line, and the output notch is located below the material receiving notch;

the fixing plates are fixed in the fixed shell, the fixing plates are arranged in an inclined mode, the end portion, facing the material receiving gap, of each fixing plate is the highest point, the end portion, facing the output gap, of each fixing plate is the lowest point, the fixing plates are arranged in an array mode along the direction from the material receiving gap to the output gap, and the fixing plates are distributed in a step mode;

the fan is fixed in the fixed shell and is positioned right below the fixed plate, and a plurality of groups of air outlets are arranged on the part of the fixed shell above the fixed plate.

Compared with the prior art, the plastic chip particle feeding device has the advantages that plastic chips are melted, particle forming and cooling output are carried out, in the melting process, a filter plate is adopted to filter impurities such as stones and the like on molten plastic, the quality of the formed plastic particle is guaranteed, the adverse effect of the impurities such as the stones and the like on the device is avoided, meanwhile, the heat-preservation heating element can enable the molten plastic to be always kept in a molten state in the conveying process, in the particle forming process, a rotary die is adopted as a die body, the molten plastic is output after standing for periods in a die hole, the plastic is output after being in a soft solid state, the plastic is output as the soft solid state, the output process is smooth, the adhesion phenomenon between two groups of adjacent plastic particles can be effectively avoided, in the cooling output process, the soft solid plastic particles are output after water cooling, conveying and air cooling treatment, the soft solid plastic particles can be converted into the solid plastic particles by the level, and air cooling can carry out surface moisture air drying on the solid plastic particles, and.

Drawings

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

Fig. 2 is a schematic structural view of the plastic melting apparatus of the present invention.

Fig. 3 is a schematic structural view of the plastic melting apparatus of the present invention.

Fig. 4 is a schematic structural view of the melt separating mechanism of the present invention.

Fig. 5 is a partial cross-sectional view of the melt separation mechanism of the present invention.

Fig. 6 is a schematic structural view of the melt conveying mechanism of the present invention.

Fig. 7 is a schematic structural diagram of the power mechanism of the present invention.

Fig. 8 is a schematic view of the rotary die forming apparatus and the cooling output apparatus according to the present invention.

Fig. 9 is a schematic view of the rotary die forming apparatus and the cooling output apparatus according to the present invention.

Fig. 10 is a schematic structural view of a rotary die forming apparatus according to the present invention.

Fig. 11 is a schematic structural view of the rotary die forming apparatus of the present invention.

Fig. 12 is a schematic structural view of a rotary die body according to the present invention.

Fig. 13 is a schematic cross-sectional view of a rotary die body of the present invention.

Fig. 14 is a schematic view showing the fitting of the internal components of the rotary die body of the present invention.

Fig. 15 is a schematic structural view of the receiving mechanism of the present invention.

Fig. 16 is a schematic cross-sectional view of the receiving mechanism of the present invention.

Fig. 17 is a schematic structural view of the pneumatic pushing mechanism of the present invention.

Fig. 18 is a schematic structural view of an intermittent drive mechanism of the present invention.

Fig. 19 is a partial structural schematic view of the intermittent drive mechanism of the present invention.

Fig. 20 is a partial structural schematic view of the intermittent drive mechanism of the present invention.

Fig. 21 is a schematic structural view of a cooling output device of the present invention.

Fig. 22 is a schematic structural view of the circulating water cooling mechanism of the present invention.

Fig. 23 is a schematic cross-sectional view of a sink of the present invention.

Fig. 24 is a schematic structural view of the particle transport mechanism of the present invention.

Fig. 25 is a schematic sectional view of the air-cooling drying mechanism of the present invention.

Detailed Description

A melting granulation process for recycling plastic foam comprises the following steps:

s1: the worker transports the chopped plastic chips to the plastic melting device 200 installed on the installation frame body 100, and the plastic melting device 200 heats and melts the plastic chips, converts the plastic chips into a molten state, and then conveys the molten state to the rotary die forming device 300;

s2: the rotary die forming device 300 receives molten plastic;

the rotary die forming device 300 comprises a rotary die body 310, a material receiving mechanism 320, an intermittent driving mechanism 330, a pneumatic pushing mechanism 340 and a forming discharge pipe 350, wherein the rotary die body 310 is used for providing a die for forming molten plastic, the material receiving mechanism 320 is used for receiving the molten plastic conveyed by the plastic melting device 200 and conveying the molten plastic to the rotary die body 310, the intermittent driving mechanism 330 is used for driving the rotary die body 310 to rotate intermittently, and the pneumatic pushing mechanism 340 is used for blowing out soft solid plastic particles in the rotary die body 310 by adopting a compressed gas blowing mode through the forming discharge pipe 350;

the rotary die body 310 comprises a die shell 311, a second die shell 312, a die shaft 313 and a rotary die 314, both the die shell 311 and the second die shell 312 are of a cylindrical structure with an opening at the end and a closed end at the end, a fastener is arranged between the die shell 311 and the opening end of the second die shell 312, the die shell and the opening end of the second die shell 312 are coaxially and fixedly connected through the fastener, the two are jointly formed into a circular shell structure with two closed ends, the die shaft 313 is coaxially and movably arranged in the circular shell formed by the die shell 311 and the second die shell 312 and can rotate around the axial direction of the die shaft 313, and the power input end of the die shaft 313 extends out of the second die shell 312;

the rotary die 314 is of a cylindrical structure, the rotary die 314 is coaxially fixed outside the die shaft 313 and is also positioned in the die shell /II, groups of end faces of the rotary die 314 are in sealing contact with the cavity bottom of the die shell 311, the other groups of end faces are in sealing contact with the cavity bottom of the die shell II 312, the end face of the rotary die 314 is provided with a die hole 3141 penetrating through the axial thickness of the rotary die 314, the die hole 3141 consists of a plurality of groups of particle holes, the diameter of the particle holes is matched with the molded plastic particles, the die holes 3141 are arranged in a plurality of groups along the circumferential direction of the rotary die 314 in an array manner,

the closed end of the mold housing 311 faces the plastic melting device 200, the closed end of the mold housing 311 is provided with a feed hole 3111 and an air inlet 3112 penetrating through the thickness of the mold housing, the feed hole 3111 and the air inlet 3112 are both positioned in the diameter direction of the closed end of the mold housing 311 perpendicular to the ground, the feed hole 3111 is positioned right above the air inlet 3112, the feed hole 3111 and the air inlet 3112 are respectively communicated with the mold hole 3141, the feed hole 3111 is communicated with the plastic melting device 200 through the material receiving mechanism 320, and the air inlet 3112 is communicated with the pneumatic pushing mechanism 340;

the closed end of the second die shell 312 and the power input end of the die shaft 313 are both positioned on the side of the second die shell 311 away from the plastic melting device 200, the closed end of the second die shell 312 is provided with a discharge hole 3121 penetrating through the thickness of the second die shell, the discharge hole 3121 and the air inlet 3112 are coaxially arranged, and the forming discharge pipe 350 is horizontally arranged and is fixedly connected and communicated with the discharge hole 3121;

the plastic melting device 200 delivers the molten plastic to the mold holes 3141 of the rotary mold 314 through the receiving mechanism 320 and the feeding hole 3111, and then the intermittent driving mechanism 330 drives the mold shaft 313/rotary mold 314 to rotate and rotationally displace to the distance between the two adjacent sets of mold holes 3141, i.e. the lower sets of mold holes 3141 rotate to be communicated with the feeding hole 3111;

s3, when the die hole 3141 which is communicated with the feed port 3111 and stores the molten plastic rotates to be communicated with the discharge port 3121/the air inlet 3112, the molten plastic is converted into soft solid, then the pneumatic push-out mechanism 340 outputs the soft solid plastic through the forming discharge pipe 350 by compressed gas, the die hole 3141 consists of a plurality of groups of particle holes, so that the soft solid plastic is in particle shape and is blown out, and meanwhile, the molten plastic is sequentially conveyed into the groups of die holes 3141 in the process, so that a circular reciprocating process of plastic input and blowing output is formed;

s4: the free end of the forming discharge pipe 350 is connected and communicated with a cooling output device 400;

the cooling output device 400 comprises a circulating water cooling mechanism 410, a particle conveying mechanism 420 and an air cooling blow-drying mechanism 430, wherein the circulating water cooling mechanism 410 is used for receiving soft solid plastic particles output by the forming discharge pipe 350 and carrying out water cooling forming treatment on the soft solid plastic particles, the particle conveying mechanism 420 is used for conveying the plastic particles which are water cooled and formed into solid particles into the air cooling blow-drying mechanism 430, and the air cooling blow-drying mechanism 430 is used for blowing and drying moisture on the surfaces of the plastic particles in an air cooling mode and then outputting the plastic particles;

the soft solid plastic particles are conveyed into the circulating water cooling mechanism 410 through the forming discharge pipe 350, the circulating water cooling mechanism 410 cools the soft solid plastic particles in a water cooling mode to finally enable the soft solid plastic particles to be solid particles, then the particle conveying mechanism 420 conveys the solid particle plastic to the air-cooling blow-drying mechanism 430, and the air-cooling blow-drying mechanism 430 outputs the solid particle plastic after performing surface moisture air-drying treatment on the solid particle plastic in an air-cooling mode.

The invention has the advantages that in the melting process, the filter plate is adopted to filter impurities such as stones and the like on the molten plastic, so that the quality of the formed plastic particles is ensured, the adverse effect of the impurities such as the stones and the like on the equipment is avoided, meanwhile, the heat-insulating heating element can enable the molten plastic to be always kept in a molten state in the conveying process, in the particle forming process, the rotary die is adopted as the die body, the molten plastic is output after standing in the die hole for periods of time, the plastic is output as a soft solid state, the output process is smooth, the adhesion phenomenon between two groups of adjacent plastic particles can be effectively avoided, in the cooling output process, the soft solid plastic particles are output after water cooling, conveying and air cooling treatment in sequence, wherein the horizontal level can enable the soft solid plastic particles to be converted into solid plastic particles, and the air cooling can carry out surface moisture drying on the solid plastic particles, so that the subsequent plastic particles can be stored conveniently.

The air-pushing type rotary die plastic granulator comprises a mounting frame body 100 arranged on the ground, wherein a plastic melting device 200, a rotary die forming device 300 and a cooling output device 400 are mounted on the mounting frame body 100, the plastic melting device 200 is used for melting and heating crushed plastic fragments, the rotary die forming device 300 is used for receiving molten plastic, carrying out particle forming processing on the molten plastic, enabling the molten plastic to be in a soft solid state, and then conveying the soft solid plastic to the cooling output device 400, and the cooling output device 400 is used for receiving soft solid particle plastic, cooling the soft solid particle plastic to be processed, and finally outputting the cooled and formed plastic particles.

The staff carries the plastics after smashing to the plastics melting device 200 through artifical or current mechanical technique, plastics melting device 200 operation and carry out the melting heat treatment to the plastic piece, make it be the molten state and carry the molten state plastics to in the rotary die forming device 300, the rotary die forming device 300 carries out granule shaping to the molten state plastics, the rotary die forming device 300 adopts the intermittent type mode of rotation to carry the granule plastics to in cooling output device 400 simultaneously, in the intermittent type transport process, the molten state plastic granules can tentatively convert soft solid-state into, cooling output device 400 adopts the water-cooling mode to carry out the cooling shaping to soft solid-state plastic granules, make it convert solid-state plastic granules and outwards export it, in the outwards export process, cooling output device 400 adopts the air-cooled mode to carry out surface moisture to solid-state plastic granules and air-dries.

The plastic melting device 200 comprises a melting separation mechanism 210, a melting conveying mechanism 220 and a power mechanism 230, wherein the melting separation mechanism 210 is used for performing melting treatment on plastic fragments and separating molten plastic from impurities such as stones, the melting conveying mechanism 220 is used for receiving the molten plastic and conveying the molten plastic into the rotary die forming device 300, and the power mechanism 230 is used for providing power for the operation of the melting separation mechanism 210 and the melting conveying mechanism 220.

The melting and separating mechanism 210 comprises a melting tank 211, a transition pipeline 213, a separating pipeline 214, an auger 215 and a storage shell 216, wherein the melting tank 211 is of a tank body structure which is axially vertical to the ground and has two open ends, the melting tank 211 is fixed on the mounting frame body 100, a melting heating element 212 for melting and heating plastic fragments in the melting tank 211 is arranged outside the melting tank 211, and an openable/closable tank cover is matched with the upper open end of the melting tank 211.

The transition pipeline 213 can be divided into two parts and respectively is a vertical section and an inclined section, the vertical section is axially perpendicular to the ground, the vertical section is fixed on the installation frame body 100, the upper pipe orifice of the vertical section is fixedly connected and communicated with the lower opening end of the melting tank 211, the inclined section is obliquely fixed on the installation frame body 100, the inclined section and the vertical section are connected and communicated, the communicated position is located at the middle position of the inclined section/the vertical section, the communicated position is provided with a filter plate 2131 for filtering impurities such as pebbles in molten plastic, the inclined section and the vertical section are in cross arrangement, the lower pipe orifice of the inclined section of the transition pipeline 213 is matched with and provided with a closed end cover, and the closed end cover is coaxially provided with a through hole.

The separation pipeline 214 is obliquely fixed on the installation frame body 100, the oblique direction of the separation pipeline 214 is parallel to the oblique direction of the oblique section of the transition pipeline 213, the lower pipe orifice of the separation pipeline 214 is fixedly connected and communicated with the upper pipe orifice of the oblique section of the transition pipeline 213, and the upper pipe orifice of the separation pipeline 214 is matched with and provided with a sealing end cover.

The outer circular surface of the separation pipe 214 is provided with a discharge nozzle 2141, the discharge nozzle 2141 is located at the bottom of the separation pipe 214 and close to the upper nozzle of the separation pipe 214, the storage housing 216 is a shell structure with an open upper end and a closed lower end, the storage housing 216 is fixed on the mounting frame body 100, and the storage housing 216 is also located under the discharge nozzle 2141.

Auger 215 and separation pipeline 214 between be coaxial arrangement, auger 215's end with set up the coaxial swing joint of orificial end cover on separation pipeline 214, auger 215's end passes separation pipeline 214's lower mouth of pipe in proper order, transition pipeline 213 slope section, set up the perforation on the end cover and be located transition pipeline 213 below, auger 215 can rotate around self axial, auger 215 and the matching between the perforation install the sealing washer, still even interval is provided with a plurality of groups on auger 215's the helicoid and dodges the hole, dodge the hole and be used for rotating auger 215 and avoid carrying molten state plastics to carry away in the impurity process such as stone.

The worker opens the tank cover and places the plastic fragments in the melting tank 211, then the melting heating element 212 is electrified and carries out melting heating treatment on the plastic fragments, and in the process, due to contact diffusion of heat, the filtering pipeline 213 is also in a high-temperature state, so that plastic falls into the filtering pipeline 213 and does not influence plastic melting;

molten plastic can fall downwards through a lower pipe opening of the vertical section of the filtering pipeline 213, the packing auger 215 rotates around the axial direction of the packing auger 215 by the power provided by the power mechanism 230 in the falling process, and due to the existence of the filter plate 2131, impurities such as stones and the like which cannot be molten can be conveyed to the discharge nozzle 2141 along with the packing auger 215, and finally conveyed into the storage shell 216 through the discharge nozzle 2141.

The melting conveying mechanism 220 is located below the melting separating mechanism 210, the melting conveying mechanism 220 includes a conveying pipeline 221 and a pushing screw 222, the conveying pipeline 221 is a pipeline structure with openings at two ends, the conveying pipeline 221 is horizontally fixed on the mounting frame body 100, a connecting nozzle 2211 is arranged outside the conveying pipeline 221, the connecting nozzle 2211 is located right above the conveying pipeline 221, and the connecting nozzle 2211 is further fixedly connected and communicated with a lower pipe orifice of a vertical section of the transition pipeline 213.

An opening end of the conveying pipeline 221 is provided with an installation end cover in a matching manner, the installation end cover is coaxially provided with an extending hole, and the other opening end of the conveying pipeline 221 is provided with a connecting support.

The pushing screw 222 and the conveying pipeline 221 are coaxially arranged, an end of the pushing screw 222 is movably connected with the connecting support, the other end of the pushing screw passes through an extending hole formed in the mounting end cover and is located outside the conveying pipeline 221, the pushing screw 222 can axially rotate around itself, and a sealing ring is mounted between the pushing screw 222 and the extending hole in a matched mode.

The molten plastic flows into the conveying pipe 221 through the lower pipe orifice of the vertical section of the transition pipe 213 and the connecting nozzle 2211 to be pinched, meanwhile, the pushing screw 222 rotates around the self axial direction under the power provided by the power mechanism 230, and the pushing screw 222 rotates and conveys the molten plastic to the pipe orifice of the conveying pipe 221 provided with the connecting support.

Preferably, in order to avoid the temperature reduction of the molten plastic during the transportation process in the transportation pipeline 221 and the adverse effect on the subsequent molding process, an insulating heating element 223 for keeping the plastic in the transportation pipeline 221 in a molten state is installed outside the transportation pipeline 221 in a matching manner.

The power mechanism 230 includes a power motor 231, the power motor 231 is fixedly mounted on the mounting frame body 100, an axial direction of an output shaft of the power motor 231 is parallel to an axial direction of the pushing screw 222, a power transmission member 232 is arranged between a power output end of the power motor 231 and an end portion of the pushing screw 222 located outside the conveying pipeline 221, and the power transmission member and the pushing screw 222 are in power connection transmission through a power transmission member 232, specifically, the power transmission member 232 includes a driving pulley coaxially fixed outside the power output end of the power motor 231, a driven pulley coaxially fixed outside the pushing screw 222, and a transmission belt arranged between the driving pulley and the driven pulley.

The second power transmission part 233 is arranged between the end part of the pushing screw 222, which is positioned outside the conveying pipeline 221, and the end part of the packing auger 215, which is positioned below the transition pipeline 213, and the second power transmission part 233 is in power connection transmission with the end part of the packing auger 215 through the second power transmission part 233, and specifically, the second power transmission part 233 comprises a driving bevel gear coaxially fixed outside the pushing screw 222 and a driven bevel gear coaxially fixed outside the packing auger 215, and the driving bevel gear is meshed with the driven bevel gear.

The power motor 231 operates and drives the pushing screw 222 to rotate around the self axial direction through the power transmission piece 232, and the pushing screw 222 rotates and drives the packing auger 215 to rotate around the self axial direction through the power transmission piece II 233.

The rotary die forming device 300 is located at the side of a pipe orifice of a conveying pipeline 221, which is provided with a connecting support and deviates from the pipe orifice of the conveying pipeline 221, which is provided with an installation end cover, the rotary die forming device 300 comprises a rotary die body 310, a material receiving mechanism 320, an intermittent driving mechanism 330, a pneumatic pushing mechanism 340 and a forming discharge pipe 350, wherein the rotary die body 310 is used for providing a die for forming molten plastic, the material receiving mechanism 320 is used for receiving the molten plastic conveyed by the melting conveying mechanism 220 and conveying the molten plastic to the rotary die body 310, the intermittent driving mechanism 330 is used for driving the rotary die body 310 to rotate intermittently, and the pneumatic pushing mechanism 340 is used for blowing out soft solid plastic particles in the rotary die body 310 by adopting a compressed gas blowing mode through the forming discharge pipe 350.

The rotary die body 310 comprises a die shell 311, a second die shell 312, a die shaft 313 and a rotary die 314, both the die shell 311 and the second die shell 312 are of a cylindrical structure with an opening at end, a closed end and an axial direction parallel to the axial direction of the pushing screw 222, a fastening piece is arranged between the die shell 311 and the opening end of the second die shell 312, the die shell and the die shell are coaxially and fixedly connected through the fastening piece, the die shell and the opening end of the second die shell 312 form a circular shell structure with two closed ends together, the die shaft 313 is coaxially and movably installed in the circular shell formed by the die shell 311 and the second die shell 312 and can rotate around the axial direction of the die shaft 313, and the power input end of the die shaft 313 extends out of the.

The rotary die 314 is a cylindrical structure, the rotary die 314 is coaxially fixed outside the die shaft 313 and is also positioned in the die housing /two, groups of end faces of the rotary die 314 are in sealing contact with the cavity bottom of the die housing 311, and the other groups of end faces are in sealing contact with the cavity bottom of the die housing two 312.

The end face of the rotary die 314 is provided with a die hole 3141 penetrating through the axial thickness of the rotary die, the die hole 3141 is composed of a plurality of groups of particle holes, the diameter of each particle hole is matched with the formed plastic particles, and the die holes 3141 are arranged in a plurality of groups in an array mode along the circumferential direction of the rotary die 314.

The closed end of the mold housing 311 faces the melt conveying mechanism 220, the closed end of the mold housing 311 is provided with a feed hole 3111 and an air inlet 3112 penetrating through the thickness of the mold housing, the feed hole 3111 and the air inlet 3112 are both positioned in the diameter direction of the closed end of the mold housing 311 perpendicular to the ground, the feed hole 3111 is positioned right above the air inlet 3112, the feed hole 3111 and the air inlet 3112 are respectively communicated with the mold hole 3141, the feed hole 3111 and the pipe opening of the connecting bracket arranged on the conveying pipeline 221 of the melt conveying mechanism 220 are communicated through the material receiving mechanism 320, and the air inlet 3112 is communicated with the pneumatic push-out mechanism 340.

The closed end of the second die shell 312 and the power input end of the die shaft 313 are both located on the side of the second die shell 311 away from the melt conveying mechanism 220, the closed end of the second die shell 312 is provided with a discharge hole 3121 penetrating through the thickness of the second die shell, the discharge hole 3121 and the air inlet hole 3112 are coaxially arranged, and the forming discharge pipe 350 is horizontally arranged and is fixedly connected and communicated with the discharge hole 3121.

The melt conveying mechanism 220 conveys the molten plastic into the mold holes 3141 of the rotary mold 314 through the material receiving mechanism 320 and the material inlet 3111, and then the intermittent driving mechanism 330 drives the mold shaft 313/rotary mold 314 to rotate and rotationally displace to the distance between two adjacent sets of mold holes 3141, namely the lower sets of mold holes 3141 rotate to be communicated with the material inlet 3111;

when the mold holes 3141, which are connected to the feed opening 3111 and store molten plastic, are rotated to connect to the discharge opening 3121/the intake opening 3112, the molten plastic is converted into a soft solid state, and then the pneumatic ejection mechanism 340 discharges the soft solid plastic through the forming discharge pipe 350 by means of compressed gas, in which process the molten plastic is successively conveyed downward sets of mold holes 3141, so that a cyclically reciprocating plastic feeding and discharging process is formed.

The receiving mechanism 320 includes a horizontally disposed receiving pipe 321, an end of the receiving pipe 321 is fixedly connected and communicated with a pipe opening of the conveying pipe 221 provided with a connecting bracket, and another end is fixedly connected and communicated with the feeding hole 3111.

More specifically, during the process that the intermittent driving mechanism 330 drives the rotary die 314 to rotate, the feed port 3111 is momentarily disconnected from the die hole 3141, and during this time, the melt conveying mechanism 220 still continues to convey the molten plastic to the material receiving pipe 321, so that the molten plastic accumulates in the material receiving pipe 321 and the conveying pipeline 221, which not only causes pressure on the pipe wall of the material receiving pipe 321, but also affects the rotation of the material pushing screw 222 and further affects the operation of the power motor 231, and in order to solve the problem, the material receiving pipe 321 is connected with a pressure relief member.

The pressure relief component comprises an installation cylinder 322, a piston 323 and a pressure relief spring 324, the installation cylinder 322 is a circular cylinder structure with an end opening and a end closing, the opening end of the installation cylinder 322 is fixed outside the material receiving pipe 321, and the installation cylinder 322 and the material receiving pipe 321 are connected and communicated.

The piston 323 is positioned in the mounting cylinder 322, and a sealed sliding guide fit is formed between the piston 323 and the mounting cylinder 322, and the piston 323 is made of a heat-resistant material.

The pressure relief spring 324 is disposed between the bottom of the mounting cylinder 322 and the piston 323, and the piston 323 is driven by the elastic force of the pressure relief spring 324 to move close to the material receiving pipe 321.

During the process that the intermittent driving mechanism 330 drives the rotary die 314 to rotate, the feed port 3111 is momentarily disconnected from the die hole 3141, during this time, the molten plastic conveyed to the material receiving pipe 321 by the melt conveying mechanism 220 extrudes the piston 323 to move away from the material receiving pipe 321, when the feed port 3111 is connected with the lower sets of die holes 3141, the molten plastic flows to the die hole 3141, and the elastic force of the pressure relief spring 324 enables the piston 323 to move close to the material receiving pipe 321 and enables the pressure relief member to return to the original shape, so that the pressure relief treatment is performed on the molten plastic, and the accumulation phenomenon of the molten plastic cannot occur.

The intermittent driving mechanism 330 comprises a driving motor 331, a grooved wheel 333, a shifting shaft 334 and a shifting block 335, wherein the axial direction of the driving motor 331 is parallel to the axial direction of the die shaft 313, the driving motor 331 is fixed on the mounting frame body 100, the axial direction of the shifting shaft 334 is parallel to the axial direction of the die shaft 313, the shifting shaft 334 is movably mounted at the closed end of the die shell II 312 and can rotate around the axial direction of the shifting shaft, a power transmission piece III 332 is arranged between the power output end of the driving motor 331 and the power input end of the shifting shaft 334, power connection transmission is carried out between the power output end of the driving motor 331 and the power input end of the shifting shaft 334 through the power transmission piece III 332, and particularly, the power transmission piece III 332 is a.

The grooved pulley 333 is coaxially fixed outside the power input end of the die shaft 313, the outer circular surface of the grooved pulley 333 is provided with intermittent grooves 3331 penetrating through the axial thickness of the grooved pulley 333, and the intermittent grooves 3331 are arrayed in a plurality of groups along the circumferential direction of the grooved pulley 333.

The shifting block 335 is fixed outside the shifting shaft 334, the shifting block 335 is further provided with a cylindrical pin 3351 matched with the intermittent groove 3331, and in the process of the period of rotation of the shifting shaft 334, the cylindrical pin 3351 is located in the intermittent groove 3331 and then separated from the intermittent groove 3331, and finally the rotary die 314 rotates and the rotational displacement is equal to the distance between two adjacent sets of die holes 3141.

The driving motor 331 operates and drives the dial shaft 334 to rotate around the self axial direction through the power transmission piece 332, during the period of rotation of the dial shaft 334, the cylindrical pin 3351 rotates after being positioned in the intermittent groove 3331 and then being separated from the intermittent groove 3331, wherein when the cylindrical pin 3351 is positioned in the intermittent groove 3331, the dial shaft 334 rotates and finally draws the rotary die 314 to rotate, the rotation displacement is equal to the distance between two adjacent die holes 3141, then the cylindrical pin 3351 is separated from the intermittent groove 3331, and the rotary die 314 is still when the dial shaft 334 rotates.

The pneumatic pushing mechanism 340 comprises a connecting air pipe 341 and a joint 342, the joint 342 is fixedly connected and communicated with the air inlet 3112, the end of the connecting air pipe 341 is connected and communicated with the joint 342, and the other end is connected and communicated with equipment for providing compressed air from the outside.

The compressed gas is blown to a mold hole 3141 which is communicated with the gas inlet 3112 and is internally provided with soft solid plastic through the connecting gas pipe 341, the joint 342 and the gas inlet 3112, and the mold hole 3141 consists of a plurality of groups of particle holes, so that the compressed gas blows out the soft solid plastic particles through the molding discharge pipe 350.

Cooling output device 400 include circulation water cooling mechanism 410, granule conveying mechanism 420, air-cooling and weather mechanism 430, circulation water cooling mechanism 410 is used for receiving the soft solid-state plastic granules of export through shaping discharging pipe 350 and carries out the water-cooling shaping to it and handles, granule conveying mechanism 420 is used for carrying the plastic granules that are the solid graininess through water-cooling and shaping to air-cooling and weather in the mechanism 430, air-cooling weathers mechanism 430 and is used for adopting the air-cooling mode to weather behind the moisture on plastic granules surface its output.

The circulating water cooling mechanism 410 includes a water tank 411, a water inlet pipe 412 and a water outlet pipe 413, the water tank 411 is fixedly installed on the installation frame body 100, and the forming discharge pipe 350 is fixedly connected and communicated with the water tank 411.

The end of the water inlet pipe 412 is connected with the water inlet device, the other end is connected with the water tank 411, the end of the water outlet pipe 413 is connected with the water tank 411, the other end is connected with the cooling device, and the cooling device is connected with the water inlet device.

The water flows into the water tank 411 through the water inlet pipe 412 and flows out through the water outlet pipe 413, the temperature of the flowing-out water is high, the flowing-out water is cooled by the cooling equipment and then flows back to the water inlet equipment again, and therefore the water is recycled;

the soft solid plastic particles are output to the water tank 411 through the forming discharge pipe 350 and cooled to the solid plastic particles by water.

Preferably, the second mold shell 312 and the forming outlet pipe 350 are made of a heat conductive material, which means that the forming outlet pipe 350 is fixedly connected and communicated with the water tank 411, and can transfer heat in the rotary mold 314 to the water tank 411, so that molten plastic in the rotary mold 314 can be smoothly converted into a soft solid state.

Granule conveying mechanism 420 include conveying motor 421, change roller 422, conveyer belt 423, conveying motor 421 horizontal fixation is on installation support body 100, the axial of changeing roller 422 is on a parallel with conveying motor 421's axial, change roller 422 be provided with two sets and change roller 422 movable mounting in the bottom of basin 411, change roller 422 movable mounting is on installation support body 100 and be located the basin 411 top in addition, two sets of change roller 422 all can be around self axial rotation, be provided with the shaft coupling between conveying motor 421's power take off end and arbitrary change roller 422 and carry out coaxial fixed connection between the two through the shaft coupling.

Conveyer belt 423 set up between two sets of commentaries on classics rollers 422, conveyer belt 423's fixed surface has and holds board 424 and hold and be perpendicular arrangement between board 424 and the conveyer belt 423, hold the board 424 and be provided with a plurality of groups along conveyer belt 423's extending direction array.

The conveying motor 421 operates and draws the rotating roller 422 to rotate, the rotating roller 422 rotates and draws the conveying belt 423 to move, and the conveying belt 423 moves, contains the plastic particles through the containing plate 424, conveys the plastic particles to the highest point of the conveying belt 423, and then enables the plastic particles to fall downwards.

Preferably, hold board 424 on the array be provided with a plurality of groups waterlogging caused by excessive rainfall holes, its meaning lies in, conveyer belt 423 through holding board 424 transportation plastic granules when, the waterlogging caused by excessive rainfall hole can be with the water leaching to reduce conveyer belt 423's operating pressure, prevent water resource loss and the influence of water resource to follow-up plastic granules air-dry simultaneously.

Preferably, the bottom of the water tank 411 is in a trapezoidal structure, the horizontal cross-sectional area of the water tank 411 increases from bottom to top, a guide plate 414 is further fixed on the cavity wall where the water tank 411 is communicated with the forming discharge pipe 350, the guide plate 414 is obliquely arranged, the top end of the guide plate 414 is fixedly connected with the water tank 411, and the bottom end of the guide plate 414 is located right above the lowest point of the conveyor belt 423; the significance is that the bottom of the water tank 411 with a trapezoid structure and the guide plate 414 are both arranged to make the plastic particles finally flow to the lowest point of the conveyor belt 423, so that the plastic particles are conveniently carried away by the containing plate 424 arranged on the surface of the conveyor belt 423.

The air-cooling blow-drying mechanism 430 comprises a fixed shell 431, a fixed plate 432 and a fan 433, wherein the fixed shell 431 is fixed on the installation frame body 100, a material receiving notch is formed in the fixed shell 431 and is located right below the highest point of the conveying belt 423, an extending output notch is further formed in the fixed shell 431, the output notch and the material receiving notch are located on the same inclined straight line, and the output notch is located below the material receiving notch.

The fixed plate 432 is fixed in the fixed housing 431, the fixed plate 432 is arranged in an inclined manner, the end portion, facing the material receiving gap, of the fixed plate 432 is the highest point, the end portion, facing the output gap, of the fixed plate 432 is the lowest point, the fixed plate 432 is provided with a plurality of groups in an array along the direction from the material receiving gap to the output gap, and the plurality of groups of the fixed plates 432 are distributed in a stepped manner.

The blower 433 is fixed in the fixed housing 431 and located right below the fixed plate 432, and a plurality of air outlets are arranged on the part of the fixed housing 432 located above the fixed plate 432.

The conveyer belt 423 moves, the plastic particles are contained in the containing plate 424 and conveyed to the highest point of the conveyer belt 423, the plastic particles can drop downwards into the fixed shell 431 through the material receiving gap, the plastic particles can drop towards the output gap through the plurality of groups of fixed plates 432 arranged in a stepped manner in the fixed shell 431, in the dropping process, wind power generated by the fan 433 blows towards the plastic particles through a gap between the two adjacent groups of fixed plates 432 and carries out surface moisture air drying treatment on the plastic particles, and the air-dried plastic particles are output through the output gap.