CN113085133A

CN113085133A - Plastic extruder that security is good

Info

Publication number: CN113085133A
Application number: CN202110371598.5A
Authority: CN
Inventors: 郭明岳
Original assignee: Individual
Current assignee: Shandong Kaifeng Polymer Materials Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-07-09
Anticipated expiration: 2041-04-07
Also published as: CN115871195A; CN113085133B

Abstract

The invention belongs to the technical field of plastic extruders, and particularly relates to a plastic extruder with good safety, which comprises a machine base, an extruder body and a feed hopper; a group of rotating shafts are uniformly distributed in the feeding hopper, the rotating shafts are uniformly distributed in the feeding hopper in a conical shape, and one end of each rotating shaft is rotatably connected with the feeding hopper; one end of the rotating shaft adjacent to the rotating shaft is fixedly connected with a bevel gear, and the adjacent bevel gears are meshed with each other; one of the rotating shafts penetrates through the feeding hopper and extends to the outside of the feeding hopper, and the rotating shaft is driven to rotate by a motor fixedly connected to the periphery of the feeding hopper; the periphery of one end of the rotating shaft, which is positioned in the feed hopper, is provided with a packing auger blade; according to the invention, the auger blade is driven to rotate continuously and convey and turn over the plastic particles upwards through the transmission of the motor and the bevel gear, so that the hot air is continuously used for uniformly preheating and drying the plastic particles, and the working efficiency of the plastic extruder is increased.

Description

Plastic extruder that security is good

Technical Field

The invention belongs to the technical field of plastic extruders, and particularly relates to a plastic extruder with good safety.

Background

The screw extruder depends on the pressure and the shearing force generated by the rotation of the screw, so that materials can be fully plasticized and uniformly mixed and are molded through a neck mold. Plastic extruders can be largely classified into twin-screw extruders, single-screw extruders, multi-screw extruders and screw-less extruders.

When the plastic extruder is used, the machine barrel needs to be heated to melt the plastic in the machine barrel, but the machine barrel is not protected, so that personal health injury is easily caused to workers.

Some technical solutions related to plastic extruders also exist in the prior art, for example, a chinese patent with application number 2020102085692 discloses a plastic extruder barrel protection device and a plastic extruder thereof, which includes a motor, a speed reducer, a mounting shaft, a first gear, a first intermediate gear, a second gear, a third gear, a screw, a rotating shaft, a material turning plate, a transmission case, a material turning case, a barrel, a first protection cover, a second protection cover, a support table, a mounting frame, a control box and a rack; the first gear is meshed with the first intermediate gear; the first intermediate gear is meshed with the second gear; the second gear is meshed with the third gear; the second gear and the third gear are respectively arranged on the two rotating shafts; a heating coil is wound on the outer surface of the machine barrel; the second protective cover is arranged on the supporting table and the mounting frame; the mounting frame is provided with a turnover driving mechanism for driving the first protective cover to turn over so as to enable the first protective cover to be buckled on the machine barrel; the heating coil is located inside the first shield and the second shield. The invention can shade the heating coil and improve the safety in use.

But when heating and extruding plastic granules through the extruder among the prior art, because the plastic granules size is inhomogeneous, and there is the less plastic powder of broken back diameter, the caking that wets easily after storing for a long time in the open air, need heat plastic granules, prevent that plastic granules from blockking up the feeder hopper, nevertheless adopt artifical heating usually among the prior art, later transport the higher plastic granules of temperature to the feeder hopper in, plastic granules spills easily and causes extravagant and scald in the transportation, cause the potential safety hazard.

Therefore, the invention provides the plastic extruder with good safety.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the plastic extruder with good safety, and solves the problems that when plastic particles are heated and extruded by the extruder in the prior art, the plastic particles are not uniform in size, and the crushed plastic powder with smaller diameter is easy to damp and agglomerate after being stored in the open air for a long time, the plastic particles need to be heated, and the plastic particles are prevented from blocking a feed hopper.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a plastic extruder with good safety, which comprises a machine base, an extruder body and a feed hopper; a group of rotating shafts are uniformly distributed in the feeding hopper, the rotating shafts are uniformly distributed in the feeding hopper in a conical shape, and one end of each rotating shaft is rotatably connected with the feeding hopper; one end of the rotating shaft adjacent to the rotating shaft is fixedly connected with a bevel gear, and the adjacent bevel gears are meshed with each other; one of the rotating shafts penetrates through the feeding hopper and extends to the outside of the feeding hopper, and the rotating shaft is driven to rotate by a motor fixedly connected to the periphery of the feeding hopper; the periphery of one end of the rotating shaft, which is positioned in the feed hopper, is provided with a packing auger blade; when the plastic particle heating and extruding machine works, plastic particles are heated and extruded by the extruding machine in the prior art, because the plastic particles are uneven in size and have plastic powder with smaller diameter after being crushed, the plastic particles are easy to damp and agglomerate after being stored in the open air for a long time, the plastic particles need to be heated, the plastic particles are prevented from blocking the feed hopper, however, in the prior art, manual heating is usually adopted, then the plastic particles with higher temperature are transferred into the feed hopper, the plastic particles are easy to spill in the transferring process, waste and scald are caused, and potential safety hazards are caused, at the moment, the plastic particle heating machine adds plastic with normal temperature into the feed hopper, then hot air is blown to the plastic particle gaps in the feed hopper by the hot air machine to heat the plastic particles, and simultaneously the plastic particles are driven by the rotating shaft of the motor, then the auger blades are driven to rotate through the transmission of the, constantly make hot-air evenly preheat the stoving to plastic granules, avoid the plastic granules caking to block up the feeder hopper, increase plastic extruder's work efficiency.

Preferably, a group of swing rods are uniformly distributed on the periphery of the auger blade, the length of each swing rod is gradually increased from the bevel gear to the inner wall of the feed hopper, and the swing rods are arranged on the periphery of the auger blade in a turpentine shape; a first hole is formed in the rotating shaft and communicated with the air heater through a pipeline; a group of second holes communicated with the first holes are uniformly formed in the periphery of the rotating shaft; through the direction in a hole and No. two holes for inside hot-air stretched into the feeder hopper, made the inside outside constantly of the plastic granules of hot-air in the feeder hopper give off, further increased the even quick diffusion in the clearance of hot-air between the plastic granules, simultaneously through the pendulum rod of pine turriform, further increased the clearance between the near plastic granules of pendulum rod, increased hot-air along with the efficiency of pendulum rod to the inside diffusion heating of plastic granules.

Preferably, a third hole communicated with the first hole is formed in the swing rod, a fourth hole communicated with the third hole is formed in one end, away from the rotating shaft, of the swing rod, the diameter of the fourth hole is smaller than that of the third hole, and the fourth hole is in arc transition with the third hole; a rolling ball is arranged in the third hole, and the diameter of the rolling ball is slightly smaller than the inner diameter of the third hole; through No. three holes of hole cooperation No. four holes, further increase the diffusion scope of the hot-air in a hole, rotate the pivot simultaneously and be close to the bottom position when the pendulum rod, the spin rolls down under the action of gravity for the spin is close to No. three downthehole air of No. four hole one sides and is spun from No. four holes after the accelerated compression, further increases the blowout speed of hot-air from No. four holes, and then increases plastic granules's heating effect.

Preferably, a group of elastic reeds are uniformly distributed on the circumference of the position, close to the fourth hole, in the third hole, one end of each reed extends into the third hole, and the other end of each reed extends out of the swing rod; when moving the transition position in No. four holes and No. three holes through the spin, spin striking reed for the reed acutely vibrates, and then drives the vibration of pendulum rod, increases the whereabouts efficiency of the less powder of granule diameter among the plastic granules, further reduces the jam of feeder hopper.

Preferably, a sliding rod is arranged in the middle of the reed, penetrates through the swing rod and extends into the third hole; a tension spring is fixedly connected between adjacent sliding rods, one end of each sliding rod, which is positioned outside the corresponding oscillating rod, is fixedly connected with a fixing ring, two sides of each fixing ring are fixedly connected with a sliding ring through elastic L-shaped rods, and the adjacent L-shaped rods are arranged in a rhombic shape; the reed penetrates through the slip ring and is connected with the slip ring in a sliding manner; through extrusion extension spring behind spin striking reed for the extension spring is warp the back and is pulled the slide bar, and then drives L shape pole and sliding ring and constantly reciprocating sliding and clear up the powder of adhesion on the reed, increases the vibration efficiency of reed, and the elasticity L shape pole that is the rhombus distribution simultaneously drives the reed swing at reciprocating sliding in-process, further increases the swing efficiency of reed in vibration process, further increases plastic granules's falling speed.

Preferably, a group of elastic wave rods are fixedly connected in the feed hopper at the bottom of the rotating shaft, a group of symmetrically arranged elastic pieces are fixedly connected to one side of each wave rod, which is close to the swing rod, the free ends of the elastic pieces are fixedly connected with elastic pull ropes, movable balls are arranged in the middle of the pull ropes, the pull ropes penetrate through slide holes formed in the middle of the movable balls and are in sliding connection with the slide holes, and the movable balls are pulled when the swing rod rotates; the oscillating bar is continuously contacted with the wave rod in the rotating process of the auger blade, so that the wave rod is driven to vibrate, the vibration efficiency of the oscillating bar is increased, and the movement speed of plastic particles is increased; when the stay cord is drawn across to the pendulum rod tip, the movable ball on the stay cord is stirred to the pendulum rod for the movable ball deflects to stay cord one side and drives the stay cord and constantly bounce-back, and the counter weight through the movable ball increases the inertia of stay cord, further increases the swing time of stay cord, and then drives the long time continuous vibration of wave pole, increases the whereabouts efficiency after plastic granules preheats in the feeder hopper.

Preferably, a hemispherical hollow ball is fixedly connected to the position, corresponding to the movable ball, of the swing rod, the hollow ball is communicated with the fourth hole, an elastic membrane is fixedly connected to one end, close to the movable ball, of the hollow ball, and a group of exhaust holes are uniformly distributed in the periphery of the hollow ball; through activity ball extrusion elastic membrane for the air in the elastic membrane deformation back extrusion hollow ball of intermittent type deformation increases the air hot air spun instantaneous speed in the exhaust hole, and impact force when further increasing hot air blowout increases plastic granules's heating efficiency.

Preferably, the movable ball is made of a magnetic material, and the periphery of the movable ball is wrapped with an elastic rubber layer; the diameter of the pull rope in a loose state is slightly larger than that of a sliding hole formed in the movable ball; through the hollow ball of magnetic activity ball attraction, increase the alignment efficiency of activity ball and elastic membrane, further increase the compression extrusion efficiency of air in the hollow ball.

The invention has the following beneficial effects:

1. according to the plastic extruder with good safety, normal-temperature plastic is added into the feed hopper, then hot air is blown to gaps among plastic particles in the feed hopper through the hot air blower to heat the plastic particles, and the hot air is matched with the driving of the motor to the rotating shaft, then the auger blades are driven to continuously rotate and upwards convey and turn the plastic particles through the transmission of the bevel gears, so that the hot air can uniformly preheat and dry the plastic particles continuously, the blocking of the feed hopper by the caking of the plastic particles is avoided, and the working efficiency of the plastic extruder is increased.

2. According to the plastic extruder with good safety, the oscillating bar is continuously contacted with the wave rod in the rotating process of the oscillating bar along with the auger blade, so that the wave rod is driven to vibrate, the vibration efficiency of the oscillating bar is increased, and the movement speed of plastic particles is increased; when the stay cord is drawn across to the pendulum rod tip, the movable ball on the stay cord is stirred to the pendulum rod for the movable ball deflects to stay cord one side and drives the stay cord and constantly bounce-back, and the counter weight through the movable ball increases the inertia of stay cord, further increases the swing time of stay cord, and then drives the long time continuous vibration of wave pole, increases the whereabouts efficiency after plastic granules preheats in the feeder hopper.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a partial cross-sectional view taken at D-D of FIG. 5;

in the figure: the device comprises a base 1, an extruder body 11, a feed hopper 12, a rotating shaft 13, a bevel gear 14, a motor 15, auger blades 16, a swing rod 17, a first hole 18, a second hole 19, a third hole 2, a fourth hole 21, a rolling ball 22, a reed 23, a sliding rod 24, a tension spring 25, an L-shaped rod 26, a sliding ring 27, a wavy rod 3, an elastic sheet 31, a pull rope 32, a movable ball 33, a hollow ball 34 and an elastic membrane 35.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the plastic extruder with good safety of the present invention comprises a base 1, an extruder body 11 and a feed hopper 12; a group of rotating shafts 13 are uniformly distributed in the feed hopper 12, the rotating shafts 13 are uniformly distributed in the feed hopper 12 in a conical shape, and one end of each rotating shaft 13 is rotatably connected with the feed hopper 12; one end of the rotating shaft 13 adjacent to the rotating shaft is fixedly connected with a bevel gear 14, and the adjacent bevel gears 14 are meshed with each other; one of the rotating shafts 13 penetrates through the feeding hopper 12 and extends to the outside of the feeding hopper 12, and the rotating shaft 13 is driven to rotate by a motor 15 fixedly connected to the periphery of the feeding hopper 12; an auger blade 16 is arranged on the periphery of one end of the rotating shaft 13, which is positioned in the feed hopper 12; when the plastic particle heating and extruding machine works, plastic particles are heated and extruded by the extruding machine in the prior art, because the plastic particles are uneven in size and have plastic powder with smaller diameter after being crushed, the plastic particles are easy to damp and agglomerate after being stored in the open air for a long time, the plastic particles need to be heated, and the plastic particles are prevented from blocking the feed hopper 12, but in the prior art, manual heating is usually adopted, then the plastic particles with higher temperature are transferred into the feed hopper 12, the plastic particles are easy to fall and cause waste and scald in the transferring process, and potential safety hazards are caused, at the moment, the plastic particle heating machine adds plastic with normal temperature into the feed hopper 12, then hot air is blown to the plastic particle gaps in the feed hopper 12 by the hot air machine to heat the plastic particles, and simultaneously the motor 15 is matched with the driving of the rotating shaft 13, then the auger blades 16 are driven to rotate continuously and upwards convey and turn the, constantly make hot-air evenly preheat the stoving to plastic granules, avoid the plastic granules caking to block up feeder hopper 12, increase plastic extruder's work efficiency.

As an embodiment of the invention, a group of swing rods 17 are uniformly distributed on the periphery of the auger blade 16, the length of each swing rod 17 is gradually increased from the bevel gear 14 to the inner wall of the feed hopper 12, and the swing rods 17 are arranged on the periphery of the auger blade 16 in a tower-shaped manner; a first hole 18 is formed in the rotating shaft 13, and the first hole 18 is communicated with the air heater through a pipeline; a group of second holes 19 communicated with the first holes 18 are uniformly formed in the periphery of the rotating shaft 13; through the direction of a hole 18 and No. two holes 19 for inside hot-air stretched into feeder hopper 12, made hot-air constantly give off to the outside inside the plastic granules in feeder hopper 12, further increased the even quick diffusion in the clearance of hot-air between the plastic granules, simultaneously through the pendulum rod 17 of pine turriform, further increased the clearance between the near plastic granules of pendulum rod 17, increased hot-air along with the efficiency of pendulum rod 17 to the inside diffusion heating of plastic granules.

As an embodiment of the invention, a third hole 2 communicated with the first hole 18 is formed in the swing rod 17, a fourth hole 21 communicated with the third hole 2 is formed in one end of the swing rod 17 away from the rotating shaft 13, the diameter of the fourth hole 21 is smaller than that of the third hole 2, and the fourth hole 21 and the third hole 2 are in arc transition; a rolling ball 22 is arranged in the third hole 2, and the diameter of the rolling ball 22 is slightly smaller than the inner diameter of the third hole 2; through No. three hole 2 cooperation No. four holes 21, further increase the diffusion scope of the hot-air in No. one hole 18, when pendulum rod 17 rotated pivot 13 and was close to the bottom position simultaneously, spin 22 rolled down under the action of gravity for spin 22 is close to No. four holes 21 ejection from No. four holes 21 behind the No. three hole 2 air acceleration compression of No. one side of hole 21, further increase the speed of spouting of hot-air from No. four holes 21, and then increase plastic granules's heating effect.

As an embodiment of the invention, a group of elastic reeds 23 are uniformly distributed on the circumference of the position, close to the fourth hole 21, in the third hole 2, one end of each reed 23 extends into the third hole 2, and the other end of each reed 23 extends out of the swing rod 17; when the rolling ball 22 moves to the transition position of the fourth hole 21 and the third hole 2, the rolling ball 22 impacts the reed 23, so that the reed 23 vibrates violently, the vibration of the swing rod 17 is further driven, the falling efficiency of powder with smaller particle diameter in plastic particles is increased, and the blockage of the feed hopper 12 is further reduced.

As an embodiment of the invention, a sliding rod 24 is arranged in the middle of the reed 23, and the sliding rod 24 penetrates through the swing rod 17 and extends into the third hole 2; a tension spring 25 is fixedly connected between adjacent sliding rods 24, one end of each sliding rod 24, which is positioned outside the swing rod 17, is fixedly connected with a fixing ring, two sides of each fixing ring are fixedly connected with a sliding ring 27 through elastic L-shaped rods 26, and the adjacent L-shaped rods 26 are arranged in a diamond shape; the reed 23 penetrates through the sliding ring 27 and is connected with the sliding ring 27 in a sliding manner; through extrusion extension spring 25 behind spin 22 striking reed 23 for extension spring 25 draws slide bar 24 after warping, and then drives L shape pole 26 and sliding ring 27 and constantly reciprocating sliding and clear up the powder of adhesion on the reed 23, increases the vibration efficiency of reed 23, and elasticity L shape pole 26 that is rhombus distribution simultaneously drives the swing of reed 23 in reciprocating sliding process, further increases the swing efficiency of reed 23 in vibration process, further increases plastic granules's falling speed.

As an embodiment of the present invention, a set of elastic wave rods 3 is fixedly connected in the feed hopper 12 at the bottom of the rotating shaft 13, a set of symmetrically arranged elastic pieces 31 is fixedly connected to one side of each wave rod 3 close to the oscillating bar 17, the free ends of the elastic pieces 31 are fixedly connected with elastic pull ropes 32, movable balls 33 are arranged in the middle of the pull ropes 32, the pull ropes 32 penetrate through sliding holes formed in the middle of the movable balls 33 and are slidably connected with the sliding holes, and the movable balls 33 are pulled when the oscillating bar 17 rotates; the oscillating bar 17 is continuously contacted with the wave rod 3 in the rotating process of the auger blade 16, so that the wave rod 3 is driven to vibrate, the vibration efficiency of the oscillating bar 17 is increased, and the movement speed of plastic particles is increased; when the end of the swing rod 17 passes through the pulling rope 32, the swing rod 17 pulls the movable ball 33 on the pulling rope 32, so that the movable ball 33 deflects towards one side of the pulling rope 32 and drives the pulling rope 32 to bounce continuously, the inertia of the pulling rope 32 is increased by the balance weight of the movable ball 33, the swinging time of the pulling rope 32 is further increased, the wave rod 3 is driven to vibrate continuously for a long time, and the falling efficiency of the preheated plastic particles in the feeding hopper 12 is increased.

As an embodiment of the invention, a hemispherical hollow ball 34 is fixedly connected to the position, corresponding to the movable ball 33, of the swing rod 17, the hollow ball 34 is communicated with the fourth hole 21, one end, close to the movable ball 33, of the hollow ball 34 is fixedly connected with an elastic membrane 35, and a group of exhaust holes are uniformly distributed in the periphery of the hollow ball 34; the elastic membrane 35 is extruded through the movable ball 33, so that the intermittently deformed elastic membrane 35 extrudes the air in the hollow ball 34 after being deformed, the instantaneous speed of the hot air ejected from the air exhaust hole is increased, the impact force when the hot air is ejected is further increased, and the heating efficiency of the plastic particles is increased.

As an embodiment of the present invention, the movable ball 33 is made of a magnetic material, and an elastic rubber layer is wrapped around the movable ball 33; the diameter of the pull rope 32 in a loose state is slightly larger than a sliding hole formed in the movable ball 33; the hollow sphere 34 is attracted by the magnetic movable sphere 33, so that the alignment efficiency of the movable sphere 33 and the elastic membrane 35 is increased, and the compression extrusion efficiency of air in the hollow sphere 34 is further increased.

When the plastic extruder works, normal-temperature plastic is added into the feed hopper 12, then hot air is blown to gaps among plastic particles in the feed hopper 12 through the hot air blower to heat the plastic particles, and meanwhile, the hot air is matched with the driving of the motor 15 to the rotating shaft 13, and then the auger blades 16 are driven to continuously rotate and upwards convey and turn over the plastic particles through the transmission of the bevel gears 14, so that the hot air can uniformly preheat and dry the plastic particles, the blocking of the feed hopper 12 caused by the caking of the plastic particles is avoided, and the working efficiency of the plastic extruder is increased; through the guidance of the first hole 18 and the second hole 19, hot air extends into the feeding hopper 12, so that the hot air is continuously diffused outwards in plastic particles in the feeding hopper 12, the uniform and rapid diffusion of the hot air in gaps among the plastic particles is further increased, meanwhile, through the tower-shaped swing rod 17, the gaps among the plastic particles near the swing rod 17 are further increased, and the diffusion heating efficiency of the hot air to the plastic particles along with the swing rod 17 is increased; the diffusion range of hot air in the first hole 18 is further increased by matching the third hole 2 with the fourth hole 21, and meanwhile, when the swing rod 17 rotates to the position, close to the bottom, of the rotating shaft 13, the rolling ball 22 rolls downwards under the action of gravity, so that air in the third hole 2, close to one side of the fourth hole 21, of the rolling ball 22 is accelerated and compressed and then is sprayed out from the fourth hole 21, the spraying speed of the hot air from the fourth hole 21 is further increased, and the heating effect of plastic particles is further increased; when the rolling ball 22 moves to the transition position of the fourth hole 21 and the third hole 2, the rolling ball 22 impacts the reed 23, so that the reed 23 vibrates violently, the oscillating rod 17 is driven to vibrate, the falling efficiency of powder with smaller particle diameter in plastic particles is increased, and the blockage of the feed hopper 12 is further reduced; the spring 23 is impacted by the rolling ball 22, then the tension spring 25 is extruded, the tension spring 25 is deformed, then the sliding rod 24 is pulled, the L-shaped rod 26 and the sliding ring 27 are driven to continuously slide in a reciprocating mode, powder adhered to the spring 23 is cleaned, the vibration efficiency of the spring 23 is increased, meanwhile, the spring 23 is driven to swing by the elastic L-shaped rods 26 distributed in a diamond shape in the reciprocating sliding process, the swing efficiency of the spring 23 in the vibrating process is further increased, and the falling speed of plastic particles is further increased; the oscillating bar 17 is continuously contacted with the wave rod 3 in the rotating process of the auger blade 16, so that the wave rod 3 is driven to vibrate, the vibration efficiency of the oscillating bar 17 is increased, and the movement speed of plastic particles is increased; when the end of the swing rod 17 passes through the pull rope 32, the swing rod 17 pulls the movable ball 33 on the pull rope 32, so that the movable ball 33 deflects to one side of the pull rope 32 and drives the pull rope 32 to bounce continuously, the inertia of the pull rope 32 is increased by the balance weight of the movable ball 33, the swing time of the pull rope 32 is further increased, the wave rod 3 is driven to vibrate continuously for a long time, and the falling efficiency of the preheated plastic particles in the feed hopper 12 is increased; the elastic membrane 35 is extruded by the movable ball 33, so that the intermittently deformed elastic membrane 35 extrudes the air in the hollow ball 34 after being deformed, the instantaneous speed of the hot air ejected from the air exhaust hole is increased, the impact force when the hot air is ejected is further increased, and the heating efficiency of the plastic particles is increased; the hollow sphere 34 is attracted by the magnetic movable sphere 33, so that the alignment efficiency of the movable sphere 33 and the elastic membrane 35 is increased, and the compression extrusion efficiency of air in the hollow sphere 34 is further increased.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A plastic extruder with good safety comprises a machine base (1), an extruder body (11) and a feed hopper (12); the method is characterized in that: a group of rotating shafts (13) are uniformly distributed in the feed hopper (12), the rotating shafts (13) are uniformly distributed in the feed hopper (12) in a conical shape, and one end of each rotating shaft (13) is rotatably connected with the feed hopper (12); one end of the rotating shaft (13) adjacent to the rotating shaft is fixedly connected with a bevel gear (14), and the adjacent bevel gears (14) are meshed with each other; one of the rotating shafts (13) penetrates through the feeding hopper (12) and extends to the outside of the feeding hopper (12), and the rotating shaft (13) is driven to rotate by a motor (15) fixedly connected to the periphery of the feeding hopper (12); the periphery of one end of the rotating shaft (13) in the feed hopper (12) is provided with a packing auger blade (16).

2. A safe plastic extruder as claimed in claim 1, wherein: a group of swing rods (17) are uniformly distributed on the periphery of the auger blade (16), the length of each swing rod (17) is gradually increased from the bevel gear (14) to the inner wall of the feed hopper (12), and the swing rods (17) are arranged on the periphery of the auger blade (16) in a tower-shaped manner; a first hole (18) is formed in the rotating shaft (13), and the first hole (18) is communicated with the air heater through a pipeline; the periphery of the rotating shaft (13) is uniformly provided with a group of second holes (19) communicated with the first holes (18).

3. A safe plastic extruder as claimed in claim 2, wherein: a third hole (2) communicated with the first hole (18) is formed in the swing rod (17), a fourth hole (21) communicated with the third hole (2) is formed in one end, away from the rotating shaft (13), of the swing rod (17), the diameter of the fourth hole (21) is smaller than that of the third hole (2), and the fourth hole (21) is in arc transition with the third hole (2); a rolling ball (22) is arranged in the third hole (2), and the diameter of the rolling ball (22) is slightly smaller than the inner diameter of the third hole (2).

4. A safe plastic extruder as claimed in claim 3, wherein: a group of elastic reeds (23) are uniformly distributed on the circumference of the position, close to the fourth hole (21), in the third hole (2), one end of each reed (23) extends into the third hole (2), and the other end of each reed (23) extends to the outside of the swing rod (17).

5. A safe plastic extruder as claimed in claim 4, wherein: a sliding rod (24) is arranged in the middle of the reed (23), and the sliding rod (24) penetrates through the swing rod (17) and extends into the third hole (2); a tension spring (25) is fixedly connected between the adjacent sliding rods (24), one end of each sliding rod (24) positioned outside the swing rod (17) is fixedly connected with a fixing ring, two sides of each fixing ring are fixedly connected with a sliding ring (27) through elastic L-shaped rods (26), and the adjacent L-shaped rods (26) are arranged in a diamond shape; the reed (23) penetrates through the slip ring (27) and is connected with the slip ring (27) in a sliding mode.

6. A safe plastic extruder as claimed in claim 5, wherein: the novel swing arm is characterized in that a group of elastic wave rods (3) are fixedly connected into a feed hopper (12) at the bottom of the rotating shaft (13), a group of symmetrically-arranged elastic pieces (31) are fixedly connected to one side, close to the swing rod (17), of each wave rod (3), the free ends of the elastic pieces (31) are fixedly connected with elastic pull ropes (32), movable balls (33) are arranged in the middle of the pull ropes (32), the pull ropes (32) run through slide holes formed in the middle of the movable balls (33) and are in sliding connection with the slide holes, and the movable balls (33) are stirred when the swing rod (17.

7. A safe plastic extruder as claimed in claim 6, wherein: the position of the swing rod (17) corresponding to the movable ball (33) is fixedly connected with a hemispherical hollow ball (34), the hollow ball (34) is communicated with the four holes (21), one end, close to the movable ball (33), of the hollow ball (34) is fixedly connected with an elastic membrane (35), and a group of exhaust holes are uniformly distributed in the periphery of the hollow ball (34).

8. A safe plastic extruder as claimed in claim 7, wherein: the movable ball (33) is made of magnetic materials, and an elastic rubber layer is wrapped on the periphery of the movable ball (33); the diameter of the pull rope (32) in a loose state is slightly larger than a sliding hole formed in the movable ball (33).