CN210791621U - Plastic extruder - Google Patents

Abstract

The utility model discloses a plastic extruder, which has the technical proposal that the plastic extruder comprises an extruder body, wherein the extruder body comprises a discharge end, the extruder also comprises a heating cylinder body and a cutting cylinder body which are arranged at the discharge end of the extruder body in sequence, and a cutting device is arranged in the cutting cylinder body; one end of the heating cylinder is hinged to the machine body; the honeycomb plate is arranged in the heating cylinder, and when the heating cylinder rotates to abut against the discharge end of the machine body, the discharge end of the machine body abuts against the end face of the honeycomb plate; the cutting cylinder comprises an open end and a closed end, and the open end of the cutting cylinder is hinged to the heating cylinder; the cutting barrel is characterized in that a hoop component is arranged between the heating barrel and the machine body, and a locking component is arranged between the cutting barrel and the heating barrel. The technology has the advantage of being convenient for cut the plastic strip into plastic granules, and reduces the damage rate of the cutting device.

Description

Plastic extruder

Technical Field

The utility model relates to a plastics processing machinery equipment field, more specifically say, it relates to a plastics extruder.

Background

In the plastic extrusion molding equipment, the plastic extruder is generally called a main machine, and the subsequent equipment matched with the plastic extruder is called an auxiliary machine. The plastic extruder can be matched with various plastic forming auxiliary machines such as pipes, films, rods, monofilaments, flat wires, packing belts, extruding nets, plates, special-shaped materials, pelleting, cable coating and the like to form various plastic extrusion forming production lines and produce various plastic products. The forming principle of the plastic extruder is as follows: the method of continuously passing a material in a flowing state through a honeycomb plate into a strip shape by heating and pressurizing is also called "extrusion molding".

In the plastic granulation process, the plastic strip extruded into a strip shape needs to be cut, and in the prior art, a cutting device is usually added at a discharge port of an extruder to cut the plastic strip. When the extruder works, the formed plastic strip is extruded from the discharge port, and the plastic strip is cut into particles by the cutting device.

However, in practical applications, the extruded plastic strip is easily cooled to solidify, the formed plastic strip has strong hardness after solidification, so that the cutting device is difficult to cut the plastic strip into plastic particles, and when the hardness of the plastic strip is too high, the cutting device is easily damaged.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a plastic extruder has the advantage of being convenient for cut into plastic granules with the plastic strip, has reduced cutting device's spoilage.

The utility model discloses a technical scheme realize like this: a plastic extruder comprises a machine body, wherein the machine body comprises a discharge end, the extruder also comprises a heating cylinder and a cutting cylinder which are sequentially arranged at the discharge end of the machine body, and a cutting device for cutting plastic strips is arranged in the cutting cylinder;

the two ends of the heating cylinder body are both arranged in an opening mode, one end of the heating cylinder body is hinged to the machine body, and the heating cylinder body can be opened and closed relative to the machine body; the heating cylinder body is internally provided with a honeycomb plate, and when the heating cylinder body rotates relative to the machine body to abut against the discharge end of the machine body, the discharge end of the machine body abuts against the end face of the honeycomb plate;

the cutting cylinder comprises an open end and a closed end, the open end of the cutting cylinder is hinged to the other end of the heating cylinder, and the cutting cylinder can be opened and closed relative to the heating cylinder;

the cutting machine is characterized in that a hoop component used for fixing the heating barrel is arranged between the heating barrel and the machine body, and a locking component used for fixing the cutting barrel is arranged between the cutting barrel and the heating barrel.

By adopting the technical scheme, when the extruder works, the plastic fluid is extruded from the discharge end of the extruder body, the extruded fluid-shaped plastic continuously passes through the honeycomb plate, the honeycomb plate shapes the fluid-shaped plastic to form the strip-shaped plastic strip, and the plastic strip is heated by the heating cylinder body so as to slow down the hardening speed of the plastic strip, so that the cutting device can cut the plastic strip conveniently, and the damage to the cutting device is reduced; in addition, when the cutting device is damaged, the locking assembly can be unlocked, then the cutting cylinder body is rotated, so that the cutting cylinder body rotates to a proper position relative to the heating cylinder body, and then the cutting device is overhauled from the opening end of the cutting cylinder body, so that the cutting device is convenient to maintain and replace; the heating cylinder body is hinged at the discharge end of the machine body so as to be convenient for replacing the honeycomb panel and cleaning the heating cylinder body, and the convenience of operation is improved.

As a further improvement of the utility model, the cutting device including rotate set up in mount pad in the cutting barrel and set up in the cutting portion of mount pad, the cutting portion comprises three blade, and is three the blade slope sets up and forms a cutting plane, the blind end of cutting barrel is provided with and is used for the drive mount pad pivoted driving motor.

Through adopting foretell technical scheme, the extruder during operation, the plastics of fluid form pass through the cartridge heater in succession, form the plastic strip of strip form, the plastic strip is carried to the cutting barrel, driving motor drive mount pad rotates, and then drive the cutting part and rotate, so that the blade cuts the plastic strip, and then the plastic strip is cut and is formed plastic granules, heat the plastic strip through the heating barrel, in order to slow down the hardening speed of plastic strip, and then the blade of being convenient for cuts the plastic strip, the harm to the blade has been reduced.

As a further improvement of the utility model, the open end of the cutting cylinder is provided with a first mounting plate, one end of the heating cylinder is provided with a second mounting plate, the first mounting plate and the second mounting plate are both provided with through holes for plastic strips to pass through, and one side of the first mounting plate is hinged to the second mounting plate; the locking assembly is arranged on one side, away from the hinge point, of the first mounting plate and used for enabling the first mounting plate and the second mounting plate to be locked and fixed with each other.

Through adopting foretell technical scheme, when needs overhaul the blade, can unblock locking subassembly, then rotate first mounting panel to make first mounting panel rotate to the open end of cutting barrel and be in open state, then the staff changes and maintains the work through the open end to the blade, has made things convenient for cutting device's maintenance.

As a further improvement of the utility model, the locking subassembly including set up in the first articulated seat of first mounting panel, articulate in first screw rod and the screw-thread fit of first articulated seat in the first nut of first screw rod, be provided with the fixed block on the second mounting panel, the lateral wall of fixed block is seted up jaggedly, first screw rod is rotatable to inserting into the breach.

Through adopting foretell technical scheme, when fixed first mounting panel and then fixed cutting section of thick bamboo, rotatable first mounting panel to conflict second mounting panel, then rotate first screw rod so that first screw rod rotates to the breach of pegging graft on the fixed block around the pin joint, then tighten first nut, just realize that the installation of first mounting panel is fixed, first nut is convenient for install first mounting panel with the cooperation of screw rod and is fixed, and dismantles simple and conveniently.

As a further improvement, the ring channel has been seted up to one side of heating barrel, the honeycomb board grafting cooperation in the ring channel is worked as the heating barrel is relative the fuselage rotates when conflicting the fuselage, the honeycomb board of contradicting of the discharge end of fuselage so that the honeycomb board keeps the joint to cooperate in the ring channel.

By adopting the technical scheme, when the honeycomb plate is installed, the honeycomb plate can be clamped in the annular groove, then the heating cylinder body is rotated to enable the heating cylinder body to rotate to abut against the discharge end of the machine body, the discharge end of the machine body abuts against the end face of the honeycomb plate to enable the honeycomb plate to be clamped in the annular groove, then the heating cylinder body is fixedly connected with the discharge end of the machine body through the hoop component, and then the installation and fixation of the honeycomb plate are realized; on the contrary, when dismantling the honeycomb panel, can unblock staple bolt subassembly, so that the heating barrel is in the active state, then rotate the heating barrel so that the heating barrel rotates to the discharge end separation with the fuselage around the pin joint, then shift out the honeycomb panel from the ring channel, and then realize demolising the honeycomb panel, through installing the honeycomb panel in the heating barrel, make the plastics of fluid form pass behind the honeycomb panel formation plastic strip, the heating barrel continues the heating to the plastic strip, in order to slow down the hardening speed of plastic strip, and then be convenient for cutting of cutting device.

As a further improvement of the utility model, the staple bolt subassembly including articulate in the last staple bolt of fuselage and lower staple bolt work as heating barrel rotates when conflicting the fuselage, go up the staple bolt and be used for the lock with lower staple bolt heating barrel is so that heating barrel and fuselage fixed connection, the free end of staple bolt still is provided with and is used for making the fixed subassembly of staple bolt and lower staple bolt reciprocal anchorage down.

Through adopting foretell technical scheme, during the fixed heating barrel, rotatable heating barrel is inconsistent to the discharge end of heating barrel and fuselage, then will go up the staple bolt respectively and rotate to lock heating barrel with lower staple bolt to the rotation of restriction heating barrel, then make through fixed subassembly and go up staple bolt and staple bolt reciprocal anchorage down, and then realize heating barrel's fixed, this mode has made things convenient for and has cleaned and maintain heating barrel.

As a further improvement, the discharge end of fuselage is provided with first solid fixed ring, the one end of heating barrel is provided with the solid fixed ring of second, go up the staple bolt and all seted up the arc wall with lower staple bolt, work as when the heating barrel rotates to the fuselage of contradicting, first solid fixed ring is inconsistent with the solid fixed ring's of second lateral wall, go up the staple bolt and the staple bolt is rotatable to the solid fixed ring's of second lateral wall of contradicting respectively first solid fixed ring and the solid fixed ring's of second lateral wall of two relative cell walls of arc wall down.

Through adopting foretell technical scheme, during the fixed heating barrel, rotatable heating barrel is inconsistent with the solid fixed ring of second to first solid fixed ring, then will go up the staple bolt respectively with lower staple bolt rotate all peg graft into the arc wall to the border of the solid fixed ring of first solid fixed ring and second, carry on spacingly to the solid fixed ring of first solid fixed ring and second through the arc wall to the rotation of restriction heating barrel, then make staple bolt and lower staple bolt reciprocal anchorage through fixed subassembly, and then realize heating barrel's fixed.

As a further improvement, the fixed subassembly including set up in the articulated seat of the second of the free end of staple bolt down, articulate in the second screw rod and the screw-thread fit of the articulated seat of second cooperate in the second nut of second screw rod, the free end of going up the staple bolt is provided with the connecting block, the fixed slot of lining up the upper and lower surface of connecting block is seted up to the lateral wall of going up the connecting block, the second screw rod is rotatable to pegging graft into the fixed slot.

Through adopting foretell technical scheme, during the fixed heating barrel, rotatable heating barrel is inconsistent with the solid fixed ring of second to first solid fixed ring, then will go up the staple bolt respectively with lower staple bolt rotate all peg graft into the arc wall to the border of the solid fixed ring of first solid fixed ring and second, it is spacing to go on solid fixed ring of first solid fixed ring and second through the arc wall, with the rotation of restriction heating barrel, then rotate the second screw rod to peg graft into the fixed slot, can screw the second nut this moment, so that last staple bolt and staple bolt reciprocal anchorage down, and then realize the fixed of heating barrel.

To sum up, the utility model discloses following beneficial effect has:

when the extruder works, plastic fluid is extruded from the discharge end of the extruder body, the extruded fluid-shaped plastic continuously passes through the honeycomb plate to form a strip-shaped plastic strip, and the plastic strip is heated by the heating cylinder body to slow down the hardening speed of the plastic strip, so that the plastic strip is conveniently cut by the cutting device, and the damage to the cutting device is reduced; in addition, when the cutting device is damaged, the fixing assembly can be unlocked, then the cutting cylinder body is rotated, so that the cutting cylinder body rotates to a proper position relative to the heating cylinder body, and then the cutting device is overhauled from the opening end of the cutting cylinder body, so that the cutting device is convenient to maintain and replace; the heating cylinder body is hinged at the discharge end of the machine body so as to be convenient for replacing the honeycomb panel and cleaning the heating cylinder body, and the convenience of operation is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view showing the assembly relationship of the heating cylinder and the body in the present embodiment;

FIG. 4 is a schematic view showing the assembly of the cutting cylinder, the heating cylinder and the body in this embodiment;

fig. 5 is a schematic structural view of the present embodiment with the cutting cylinder removed.

In the figure: 1. a body; 2. a feeding end; 3. a discharge end; 4. heating the cylinder; 5. cutting the cylinder; 51. a discharge port; 6. a honeycomb panel; 7. the hoop component; 71. an anchor ear is arranged; 72. a lower hoop; 81. a mounting seat; 82. a blade; 9. a drive motor; 10. a first mounting plate; 11. a second mounting plate; 12. a first hinge mount; 13. a first screw; 131. rotating the handle; 14. a first nut; 15. a fixed block; 16. a notch; 17. an annular groove; 18. a first retaining ring; 19. a second retaining ring; 20. an arc-shaped slot; 21. a second hinge mount; 22. a second screw; 23. a second nut; 24. an upper connecting block; 25. fixing grooves; 26. a third hinge mount; 27. a fourth hinge base; 28. a support frame; 29. and (4) a hopper.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A plastic extruder is disclosed, as shown in fig. 1 and fig. 3, comprising a machine body 1, wherein the machine body 1 comprises a feeding end 2 and a discharging end 3, a material is conveyed to the interior of the machine body 1 through the feeding end 2 of the machine body 1, the machine body 1 heats and pressurizes the material to enable the material to form a flowing state, and then the material is output through the discharging end 3 of the machine body 1. This extruder is still including installing heating cylinder 4 at the discharge end 3 of fuselage 1, and heating cylinder 4 is the cylinder structure of cavity setting, and the one end of heating cylinder 4 articulates at the discharge end 3 of fuselage 1, and heating cylinder 4 can rotate to tip and fuselage 1's discharge end 3 inconsistent or separation around the pin joint. In this embodiment, a third hinge base 26 is additionally arranged at the discharge end 3 of the machine body 1, and the heating cylinder 4 is hinged to the machine body 1 through the third hinge base 26.

As shown in fig. 1 and 3, an annular groove 17 is formed in the inner wall of the heating cylinder 4, the honeycomb plate 6 is in clamping fit in the annular groove 17, and when the heating cylinder 4 is rotated until the end part of the heating cylinder abuts against the discharge end 3 of the machine body 1, the end surface of the honeycomb plate 6 abuts against the discharge end 3 of the machine body 1, so that the honeycomb plate 6 can be kept clamped and fixed in the annular groove 17. When the extruder works, the plastic in a fluid state is extruded from the discharge end 3 of the extruder body 1 and then passes through the honeycomb plate 6, the honeycomb plate 6 shapes the extruded fluid-shaped plastic, and the fluid-shaped plastic forms a strip-shaped plastic strip after passing through the honeycomb plate 6.

The machine body 1 is provided with a hoop component 7 for fixing the heating cylinder body 4, and the hoop component 7 is positioned at the discharge end 3 of the machine body 1. Wherein, staple bolt subassembly 7 is used for making heating cylinder 4 and fuselage 1 fixed connection. That is, after the heating cylinder 4 rotates to abut against the discharge end 3 of the machine body 1, the hoop component 7 can be used for buckling the heating cylinder 4 to fixedly connect the heating cylinder 4 with the discharge end 3 of the machine body 1.

Specifically, as shown in fig. 1 and 3, the hoop assembly 7 includes an upper hoop 71 and a lower hoop 72, and the fourth hinge seat 27 is fixed to the fuselage 1. The upper anchor ear 71 and the lower anchor ear 72 are respectively hinged to the upper end and the lower end of the second hinge base 21, and the upper anchor ear 71 and the lower anchor ear 72 can be rotated up and down to be buckled to form an annular structure. In addition, a fixing component for fixing the upper anchor ear 71 and the lower anchor ear 72 to each other is additionally arranged between the free ends of the upper anchor ear 71 and the lower anchor ear 72.

Specifically, as shown in fig. 3 and 4, the fixing assembly includes a second hinge seat 21 installed at the free end of the lower anchor ear 72, a second screw 22 hinged to the second hinge seat 21, and a second nut 23 in threaded fit with the second screw 22, in this embodiment, a fixing groove 25 penetrating through the upper and lower surfaces of the upper connecting block 24 is formed in the side wall of the upper connecting block 24, the upper connecting block 24 forms a U-shaped structure, so that after the upper anchor ear 71 is fastened with the lower anchor ear 72, the screw can be rotated to be inserted into the fixing groove by rotating the second screw 22, and then the second nut 23 is screwed to fix the upper anchor ear 71 and the lower anchor ear 72. When installing honeycomb panel 6, combine fig. 1, can with the joint of honeycomb panel 6 in the ring channel 17 of heating barrel 4, then rotate heating barrel 4 to the terminal surface of the discharge end 3 conflict honeycomb panel 6 of fuselage 1 to through staple bolt subassembly 7 with heating barrel 4 fixed connection at the discharge end 3 of fuselage 1, then make staple bolt 71 and lower staple bolt 72 reciprocal anchorage through fixed subassembly, and then realize that the installation of honeycomb panel 6 is fixed.

Meanwhile, as shown in fig. 1 and 3, a first fixing ring 18 is welded at the discharge end 3 of the machine body 1, a second fixing ring 19 is welded at one end of the heating cylinder 4 hinged to the machine body 1, and the first fixing ring 18 is attached to the second fixing ring 19 when the heating cylinder 4 is rotated to abut against the discharge end 3 of the machine body 1. In this embodiment, the radii of the first and second retaining rings 18, 19 are equal. In addition, arc-shaped groove 20 has all been seted up on last staple bolt 71 and the lower staple bolt 72, and the width of arc-shaped groove 20 be greater than first solid fixed ring 18 and the solid fixed ring 19 thickness after laminating mutually and of second a little, promptly when first solid fixed ring 18 and the solid fixed ring 19 of second back of laminating mutually, go up staple bolt 71 and lower staple bolt 72 all can rotate and all peg graft into arc-shaped groove 20 to the border of first solid fixed ring 18 and the solid fixed ring 19 of second to make two relative cell walls of arc-shaped groove 20 contradict the solid fixed ring 18 of first solid fixed ring 18 and the solid fixed ring 19's of second lateral wall respectively.

As shown in fig. 3 and 4, the extruder further includes a cutting cylinder 5 hinged at one end of the heating cylinder 4. Specifically, the open end of the cutting cylinder 5 is fixedly connected with a first mounting plate 10 through a bolt, one end of the heating cylinder 4 is welded with a second mounting plate 11, and the first mounting plate 10 is hinged to one side of the second mounting plate 11. In this embodiment, the end of the cutting cylinder 5 connected to the first mounting plate 10 is open, and the other end is closed. In order to make the extruder during operation, first mounting panel 10 and second mounting panel 11 do not influence the plastic strip and normally carry to cutting barrel 5, consequently all offer the through-hole that supplies the plastic strip to pass at the lateral wall of first mounting panel 10 and second mounting panel 11. Meanwhile, a locking component is additionally arranged on one side of the first mounting plate 10, which is far away from the hinge point, and when the first mounting plate 10 rotates around the hinge point to be attached to the second mounting plate 11, the first mounting plate 10 and the second mounting plate 11 can be mutually locked and fixed through the locking component.

Specifically, as shown in fig. 1 and 2, the locking assembly includes a first screw 13 hinged to the first mounting plate 10 and a first nut 14 in threaded engagement with the first screw 13, in this embodiment, a first hinge seat 12 is welded to the first mounting plate 10, and the screw is hinged to the first hinge seat 12. In addition, the locking assembly further comprises a fixing block 15 welded on the second mounting plate 11, and the fixing block 15 is located on the side, away from the first mounting plate 10, of the second mounting plate 11, and hinged to the second mounting plate 11. The side wall of the fixed block 15 is provided with a gap 16, so that the fixed block 15 forms a U-shaped structure. When the first mounting plate 10 rotates to be attached to the second mounting plate 11, the first screw 13 can be rotated to be inserted into the notch 16 of the fixing block 15, and then the first nut 14 is screwed on the first screw 13, so that the first mounting plate 10 is mounted and fixed. In order to facilitate the worker to rotate the first nut 14 and further fix the first mounting plate 10, a rotating handle 131 is added on the sidewall of the first nut 14 to increase the contact area between the hand and the second nut 23, thereby improving the comfort of operation.

In addition, the extruder comprises a cutting device mounted in the cutting cylinder 5. After the formed plastic strip is conveyed to the cutting cylinder, the plastic strip is cut by the cutting device, so that the plastic strip is cut into plastic particles.

Specifically, as shown in fig. 4 and 5, the cutting device includes a mounting seat 81 rotatably mounted in the cutting cylinder 5, and a cutting portion fixedly mounted on the mounting seat 81 by a bolt. Specifically, the cutting portion is composed of three blades 82, and the three blades 82 are obliquely arranged to form a cutting surface. In this embodiment, the three blades 82 are all rectangular, the three blades 82 form a fan blade structure similar to a fan, and a cutting angle is formed on one side of each blade 82. Meanwhile, the closed end of the cutting cylinder 5 is provided with a driving motor 9 for driving the cutting mounting seat 81 to rotate, and the side wall of the first mounting plate 10 is also provided with a supporting frame 28 for supporting the driving motor 9. When the extruder works, the driving motor 9 drives the blade 82 to rotate, and the cutting angle of the blade 82 cuts the plastic strips.

As shown in fig. 1, since the cut plastic particles are easily accumulated in the cutting cylinder 5, and further the cutting effect of the cutting device is affected, a discharge hole 51 for discharging the cut plastic particles is opened on the side wall of the cutting cylinder 5, and the discharge hole 51 faces the ground, so that the cut plastic particles are discharged out of the cutting cylinder 5. Extruder during operation, the staff can be placed in the below of discharge gate 51 and accept the box and accept the plastic granules that the cutting is good, and then be convenient for pack and transport plastic granules. Meanwhile, a material guide hopper 29 is additionally arranged at the discharge port 51 of the cutting cylinder 5, and the material guide hopper 29 can be fixed on the cutting cylinder 5 by welding, bolt connection or integrated molding with the cutting cylinder. In this embodiment, the material guiding hopper 29 and the cutting cylinder 5 are integrally formed, and the opening of the material guiding hopper 29 is gradually reduced from top to bottom, so that the cut plastic particles can be gathered at the material guiding hopper 29 and discharged.

The overall working process is as follows: when the extruder works, plastic fluid is extruded from the discharge end 3 of the extruder body 1, the extruded fluid-shaped plastic continuously passes through the honeycomb plate 6, the honeycomb plate 6 shapes the fluid-shaped plastic to form a strip-shaped plastic strip, and the plastic strip is heated through the heating cylinder 4 to slow down the hardening speed of the plastic strip, so that the plastic strip is conveniently cut by the cutting device, and the damage to the cutting device is reduced; in addition, when the cutting device is damaged, the locking assembly can be unlocked, then the cutting barrel body 5 is rotated, so that the cutting barrel body 5 rotates to a proper position relative to the heating barrel body 4, then the cutting device is overhauled from the opening end of the cutting barrel body 5, and the cutting device is convenient to maintain and replace.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims (8)

1. The utility model provides a plastic extruder, includes fuselage (1), fuselage (1) includes discharge end (3), its characterized in that: the extruder also comprises a heating cylinder (4) and a cutting cylinder (5) which are sequentially arranged at the discharge end (3) of the extruder body (1), wherein a cutting device for cutting plastic strips is arranged in the cutting cylinder (5);

the two ends of the heating cylinder body (4) are both arranged in an opening mode, one end of the heating cylinder body is hinged to the machine body (1), and the heating cylinder body (4) can be opened and closed relative to the machine body (1); a honeycomb plate (6) is arranged in the heating cylinder (4), and when the heating cylinder (4) rotates relative to the machine body (1) to abut against the discharge end (3) of the machine body (1), the discharge end (3) of the machine body (1) abuts against the end face of the honeycomb plate (6);

the cutting cylinder (5) comprises an open end and a closed end, the open end of the cutting cylinder (5) is hinged to the other end of the heating cylinder (4), and the cutting cylinder (5) can be opened and closed relative to the heating cylinder (4);

be provided with between heating barrel (4) and fuselage (1) and be used for fixing staple bolt subassembly (7) of heating barrel (4), be provided with between cutting barrel (5) and heating barrel (4) and be used for fixing the closure subassembly of cutting barrel (5).

2. A plastic extruder as claimed in claim 1, wherein: cutting device including rotate set up in mount pad (81) in cutting barrel (5) and set up in the cutting part of mount pad (81), the cutting part comprises three blade (82), and is three blade (82) slope sets up and forms a cutting plane, the blind end of cutting barrel (5) is provided with and is used for the drive mount pad (81) pivoted driving motor (9).

3. A plastic extruder as claimed in claim 2, wherein: a first mounting plate (10) is arranged at the opening end of the cutting cylinder body (5), a second mounting plate (11) is arranged at one end of the heating cylinder body (4), through holes for plastic strips to pass through are formed in the first mounting plate (10) and the second mounting plate (11), and one side of the first mounting plate (10) is hinged to the second mounting plate (11); the locking assembly is arranged on one side, away from a hinge point, of the first mounting plate (10), and the locking assembly is used for enabling the first mounting plate (10) and the second mounting plate (11) to be locked and fixed with each other.

4. A plastic extruder as claimed in claim 3, wherein: the locking assembly comprises a first hinged seat (12) arranged on the first mounting plate (10), a first screw rod (13) hinged to the first hinged seat (12) and a first nut (14) in threaded fit with the first screw rod (13), a fixing block (15) is arranged on the second mounting plate (11), a gap (16) is formed in the side wall of the fixing block (15), and the first screw rod (13) can rotate to be inserted into the gap (16).

5. A plastic extruder as claimed in claim 1, wherein: annular groove (17) have been seted up to one side of heating cylinder body (4), honeycomb panel (6) joint cooperate in annular groove (17), work as heating cylinder body (4) are relative fuselage (1) rotates when contradicting fuselage (1), honeycomb panel (6) are contradicted in discharge end (3) of fuselage (1) so that honeycomb panel (6) keep the joint cooperate in annular groove (17).

6. A plastic extruder as claimed in claim 1, wherein: staple bolt subassembly (7) including articulate in last staple bolt (71) and lower staple bolt (72) of fuselage (1) work as heating barrel (4) rotate when conflicting fuselage (1), go up staple bolt (71) and lower staple bolt (72) and be used for the lock heating barrel (4) are so that heating barrel (4) and fuselage (1) fixed connection, the free end of lower staple bolt (72) still is provided with and is used for making staple bolt (71) and lower staple bolt (72) fixed subassembly each other.

7. A plastic extruder as claimed in claim 6, wherein: discharge end (3) of fuselage (1) are provided with first solid fixed ring (18), the one end of heating barrel (4) is provided with the solid fixed ring of second (19), arc wall (20) have all been seted up with lower staple bolt (72) to last staple bolt (71), work as heating barrel (4) rotate to conflict fuselage (1) when, the lateral wall of first solid fixed ring (18) and the solid fixed ring of second (19) is inconsistent, it conflicts the lateral wall of first solid fixed ring (18) and the solid fixed ring of second (19) respectively to go up staple bolt (71) and staple bolt (72) are rotatable to two relative cell walls of arc wall (20) down.

8. A plastic extruder as claimed in claim 7, wherein: the fixing assembly comprises a second hinged seat (21) arranged at the free end of the lower hoop (72), a second screw rod (22) hinged to the second hinged seat (21) and a second nut (23) in threaded fit with the second screw rod (22), an upper connecting block (24) is arranged at the free end of the upper hoop (71), a fixing groove (25) penetrating through the upper surface and the lower surface of the upper connecting block (24) is formed in the side wall of the upper connecting block (24), and the second screw rod (22) can rotate to be inserted into the fixing groove (25).

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