CN111546599A

CN111546599A - Plastic extruder with pressure regulating structure

Info

Publication number: CN111546599A
Application number: CN202010487405.8A
Authority: CN
Inventors: 段双录; 初丽萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-08-18

Abstract

The invention discloses a plastic extruder with a pressure adjusting structure, which comprises an extruding cylinder, a speed reducer, a motor, a telescopic cylinder, a die head and a pressure gauge, one end of the extruding cylinder is fixed with a transition cylinder through a bolt, the other end of the extruding cylinder is fixed with a pressure adjusting cylinder through a bolt, the other end of the pressure adjusting cylinder is fixed with a connecting seat through a screw, the inner side of the connecting seat is provided with a die head, a fixed box is fixed on the outer surface of the front end of the pressure adjusting cylinder through screws, a pressure gauge and a hand wheel are arranged on the outer surface of the front end of the fixed box, the rear end of the hand wheel is connected with a driving gear through a rotating shaft, the rear end of the driving gear is movably connected with a connecting block, the rear end of connecting block is passed through the screw fixation and is had the spring, the one end of driving gear is provided with spacing tooth piece, the other end of driving gear is provided with driven fluted roller. The invention is convenient to control the extrusion pressure and improves the extrusion quality of plastics.

Description

Plastic extruder with pressure regulating structure

Technical Field

The invention relates to the technical field of plastic product processing, in particular to a plastic extruder with a pressure adjusting structure.

Background

The plastic extruder is mainly used for extruding plastic grains after hot melting, and then is matched with a forming die to manufacture plastic products, and the main components of the plastic extruder comprise a motor, a speed reducer, a thermoplastic extrusion mechanism and the like.

When a plastic extruder works, two main factors influencing the quality of extruded plastics are adopted, one is the shape of an inner cavity of an extrusion die head, the other is the control of extrusion pressure, and the traditional plastic extruder directly controls the extrusion pressure by replacing the die head.

To this end, chinese patent application No.: 201911386890.3 discloses a plastics extruder device with measurement function, involves plastics extruder device field, including frame, extrusion cylinder and measurement workbin, the top of frame is provided with horizontal extrusion cylinder, and the welding of one end top of extrusion cylinder and intercommunication have the feeding mouth of pipe, and flange joint electromagnetism feed valve's lower interface is passed through to the orificial upper end of feeding, and the last interface connection of electromagnetism feed valve has the measurement workbin. The plastic material distributing device is characterized in that a distributing roller is arranged in the distributing box and driven by a distributing motor to rotate, a metering trough formed in the outer wall of the distributing roller is used for containing plastic materials from a connecting part of the metering trough and a material storage box and dropping and discharging the plastic materials along a discharging notch, the slotting volume of the metering trough is a fixed value, and the quantity of the plastic materials introduced into the pre-stored material box can be controlled by controlling the number of turns of the distributing roller. The design of the device is provided with a metering trough which can control the quantity of plastic raw materials introduced into a pre-stored material box, but the extrusion pressure in an extrusion cylinder of the device cannot be conveniently controlled.

To this end, chinese patent application No.: 201911349969.9 discloses a plastics extruder with alignment cooling function, including the plastics extruder main part, the plastics extruder main part still is provided with coalignment and cooling circulation device, coalignment passes through bolted connection to be fixed in the export of plastics extruder main part aircraft nose, cooling circulation device includes storage water tank, shower nozzle, filter equipment, waste water collecting tank and circulating water pump, the storage water tank is fixed in plastics extruder main part right side through bolted connection, circulating water pump passes through bolted connection to be fixed in storage water tank one side, the waste water collecting tank passes through the connecting piece to be fixed in the coalignment export, filter equipment passes through the connecting piece setting in waste water collecting tank top. The invention effectively avoids the problem of deformation caused by eccentricity and stress force. The cooling circulation device is arranged, the cooling effect of thermoplastic molding can be improved, but the extrusion pressure can be controlled only by replacing the die head, and the extrusion pressure in the extrusion cylinder cannot be conveniently adjusted.

The existing plastic extruder can only control extrusion pressure by replacing a die head, cannot directly control extrusion pressure, and when the extrusion pressure required by the die head is too large, and the required extrusion pressure cannot be provided in an extrusion cylinder, the quality of extruded plastics can be affected, so that a plastic extruder with a pressure adjusting structure is urgently needed to be designed to solve the problems.

Disclosure of Invention

The invention aims to provide a plastic extruder with a pressure adjusting structure, which aims to solve the problem that the quality of extruded plastic is influenced because the extrusion pressure cannot be conveniently controlled in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a plastic extruder with a pressure adjusting structure comprises an extruding cylinder, a speed reducer, a motor, a telescopic cylinder, a die head and a pressure gauge, wherein one end of the extruding cylinder is fixed with a transition cylinder through a bolt, the other end of the extruding cylinder is fixed with a pressure adjusting cylinder through a bolt, the other end of the pressure adjusting cylinder is fixed with a connecting seat through a screw, the inner side of the connecting seat is provided with the die head, the outer surface of the front end of the pressure adjusting cylinder is fixed with a fixing box through a screw, the outer surface of the front end of the fixing box is provided with the pressure gauge and a hand wheel, the rear end of the hand wheel is connected with a driving gear through a rotating shaft, the rear end of the driving gear is movably connected with a connecting block, the rear end of the connecting block is fixed with a spring through a screw, one end of the driving gear is provided with a limiting toothed block, the, and the opposite side of driven fluted roller is provided with first rack, the surface of first rack is connected with first baffle, the surface of second rack is connected with the second baffle, first baffle all sets up in the inboard of a pressure regulating section of thick bamboo with the second baffle, the surface of an excessive section of thick bamboo has the feeder hopper through the bolt fastening, the inboard of an excessive section of thick bamboo is provided with the (mixing) shaft, the one end skin weld of (mixing) shaft has helical blade, the other end of (mixing) shaft has cup jointed the connecting rod, the surface of connecting rod has cup jointed an output section of thick bamboo, another pot head of connecting rod is equipped with the sleeve, and the sleeve passes through the screw and telescopic cylinder's output is.

Preferably, the outer surface of the speed reducer is fixed with a first support frame through a screw, the other end of the first support frame is fixed with a motor through a screw, the output end of the motor is connected and fixed with the input end of the speed reducer through a coupler, the outer surface of the speed reducer is fixed with a second support frame through a screw, and the other end of the second support frame is connected and fixed with the telescopic cylinder through a screw.

Preferably, the sleeve and the connecting rod form a rotating structure, the output cylinder is arranged on the inner side of the speed reducer, convex teeth are uniformly arranged on the outer surface of the connecting rod, grooves are uniformly formed in the inner wall of the connecting rod, the convex teeth are matched with the grooves, and the connecting rod and the output cylinder form a telescopic structure.

Preferably, helical blade is helical structure, helical blade's surface and the inner wall laminating of an extrusion section of thick bamboo, the surface cover of (mixing) shaft is equipped with the stopper, and the periphery of stopper and the inner wall welded fastening of an excessive section of thick bamboo, the inner chamber of feeder hopper and the inner chamber intercommunication of an excessive section of thick bamboo, telescopic structure is constituteed with the stopper to the (mixing) shaft.

Preferably, the spread groove has been seted up on the inner wall of a pressure regulating section of thick bamboo, evenly be provided with on the inner wall of spread groove and change the roller, and the both ends of changeing the roller all rotate through the inner wall of pivot and spread groove and be connected, the rear end of first baffle and second baffle all sets up in the inboard of spread groove, first baffle just constitutes sliding structure with the spread groove with the second baffle.

Preferably, the outer surface cover of first baffle is equipped with the sealing strip, and the other end of sealing strip is embedded on the inner wall of a pressure adjustment section of thick bamboo, the one end of first baffle and second baffle sets up in the inboard of spread groove, and the other end of first baffle and second baffle all runs through the surface of a pressure adjustment section of thick bamboo, first baffle and second baffle are opposite from top to bottom and arrange, the inner chamber of extruding cylinder passes through the inner chamber intercommunication of a pressure adjustment section of thick bamboo and die head.

Preferably, the outer surfaces of the two sides of the driven gear roller are respectively meshed with the first rack and the second rack, and the two ends of the driven gear roller are respectively and rotatably connected with the inner wall of the fixed box and the outer surface of the pressure adjusting cylinder through bearings.

Preferably, the outer surfaces of the two sides of the driving gear are respectively meshed with a limiting tooth block and a driven tooth roller, the limiting tooth block is fixed on the inner wall of the fixed box through screws, and the width of the limiting tooth block is the same as the width of the driving gear.

Preferably, the connecting block and the driving gear form a rotating structure, the driving gear and the spring form an elastic structure, and the rear end of the spring is fixedly connected with the outer surface of the pressure adjusting cylinder through a screw.

Preferably, the last skin weld of connecting seat has the connecting pile, the both sides of connecting pile all rotate with the connecting pile through the articulated shaft and are connected, the bottom of spacing knot is contradicted with the surface of die head, the inner wall shape of connecting seat is identical with the surface shape of die head, the one end outward appearance of die head is discoid structure, the other end outward appearance of die head is funnel shaped structure.

Compared with the prior art, the invention has the beneficial effects that: the plastic extruder with the pressure adjusting structure is convenient for controlling extrusion pressure and improving the plastic extrusion quality.

The plastic discharge device is provided with a fixed box, a hand wheel, a pressure regulating cylinder, a first clapboard, a second clapboard, a driving gear, a driven gear roller, a first rack and a second rack, wherein the pressure regulating cylinder is arranged on the output end of the extrusion cylinder, so that plastic can be extruded into the pressure regulating cylinder by the matching of a stirring shaft and a helical blade, then the plastic is discharged into a die head by the pressure regulating cylinder, the plastic is extruded out by the die head, the driving gear is driven to rotate by rotating the hand wheel, the driving gear drives the driven gear roller to rotate, the driven gear roller drives the first rack and the second rack to move up and down, namely, the first rack and the second rack drive the first clapboard and the second clapboard to respectively move up and down, the blocking range of the first clapboard and the second clapboard to the inner cavity of the pressure regulating cylinder can be regulated, the discharge caliber of the plastic can be regulated, and under the same volume, the discharge pressure can be increased by reducing the, in a similar way, the discharge pressure can be reduced, the effect of conveniently controlling the extrusion pressure is achieved, the problem that the extrusion quality of the plastic is influenced due to insufficient pressure is solved, and the extrusion quality of the plastic is improved.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional structural view of the present invention;

FIG. 3 is a schematic top cross-sectional view of the structure of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is a schematic side view of the connecting socket of FIG. 1 according to the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 2 according to the present invention;

FIG. 7 is a partial front view of the first and second partitions of FIG. 6 according to the present invention;

FIG. 8 is an enlarged view of the structure at C in FIG. 3 according to the present invention;

FIG. 9 is a side cross-sectional view of the structure of the connecting rod and the output of FIG. 2 according to the present invention.

In the figure: 1. an extrusion cylinder; 2. a transition cylinder; 3. a feed hopper; 4. a speed reducer; 5. a first support frame; 6. a motor; 7. a second support frame; 8. a telescopic cylinder; 9. a sleeve; 10. a connecting rod; 11. an output drum; 12. a limiting block; 13. a stirring shaft; 14. a helical blade; 15. a die head; 16. a fixing box; 17. a pressure gauge; 18. a hand wheel; 19. a pressure regulating cylinder; 20. a first separator; 21. a second separator; 22. a driving gear; 23. connecting blocks; 24. a spring; 25. a limit tooth block; 26. a driven toothed roller; 27. a first rack; 28. a second rack; 29. a connecting seat; 30. connecting piles; 31. a limit buckle; 32. connecting grooves; 33. rotating the roller; 34. a sealing strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, an embodiment of the present invention is shown: the utility model provides a plastics extruder with pressure adjustment structure, includes a section of thick bamboo 1, speed reducer 4, motor 6, telescopic cylinder 8, die head 15 and manometer 17, and the one end of a section of thick bamboo 1 is passed through the bolt fastening and is had excessive section of thick bamboo 2, and the other end of a section of thick bamboo 1 is passed through the bolt fastening and is had a pressure adjustment section of thick bamboo 19, and the other end of a pressure adjustment section of thick bamboo 19 is passed through the screw fastening and is had connecting seat 29, and the inboard of connecting seat 29 is provided with die.

Preferably, the upper surface welding of connecting seat 29 has connecting pile 30, the both sides of connecting pile 30 all rotate with connecting pile 30 through the articulated shaft and are connected, the bottom of limit buckle 31 is contradicted with the surface of die head 15, the inner wall shape of connecting seat 29 is identical with the surface shape of die head 15, the one end surface of die head 15 is discoid structure, the other end surface of die head 15 is funnel-shaped structure, as shown in fig. 4-5, insert with connecting seat 29 through die head 15, the rethread limit buckle 31 is contradicted with die head 15, can make die head 15 and connecting seat 29 be connected fixedly.

The outer surface of the front end of the pressure adjusting cylinder 19 is fixed with a fixed box 16 through screws, the outer surface of the front end of the fixed box 16 is provided with a pressure gauge 17 and a hand wheel 18, the rear end of the hand wheel 18 is connected with a driving gear 22 through a rotating shaft, the rear end of the driving gear 22 is movably connected with a connecting block 23, the rear end of the connecting block 23 is fixed with a spring 24 through screws, one end of the driving gear 22 is provided with a limiting toothed block 25, the other end of the driving gear 22 is provided with a driven toothed roller 26, one side of the driven toothed roller 26 is provided with a second rack 28, the other side of the driven toothed roller 26 is provided with a first rack 27, the outer surface of the first rack 27 is connected with a first partition plate 20, the outer surface of the second rack 28 is connected with a second partition plate 21.

Preferably, the inner wall of the pressure adjusting cylinder 19 is provided with a connecting groove 32, the inner wall of the connecting groove 32 is uniformly provided with a rotating roller 33, both ends of the rotating roller 33 are rotatably connected with the inner wall of the connecting groove 32 through a rotating shaft, the rear ends of the first partition board 20 and the second partition board 21 are both arranged on the inner side of the connecting groove 32, the first partition board 20 and the second partition board 21 form a sliding structure with the connecting groove 32, as shown in fig. 8, the first partition board 20 is abutted against the rotating roller 33, the first partition board 20 can rotate in the connecting groove 32 through the rotating roller 33, the friction force at the joint of the first partition board 20 and the connecting groove 32 can be reduced, and the first partition board 20 can slide more smoothly in the connecting.

Preferably, the outer surface cover of first baffle 20 is equipped with sealing strip 34, and the other end of sealing strip 34 is embedded on the inner wall of a pressure regulation section of thick bamboo 19, the one end of first baffle 20 and second baffle 21 sets up in the inboard of spread groove 32, and the other end of first baffle 20 and second baffle 21 all runs through the surface of a pressure regulation section of thick bamboo 19, first baffle 20 and second baffle 21 are opposite from top to bottom and arrange, the inner chamber of extruding section of thick bamboo 1 is through the inner chamber intercommunication of a pressure regulation section of thick bamboo 19 with die head 15, as shown in fig. 6-8, through first baffle 20 and second baffle 21 opposition, can cut off the inner chamber of a pressure regulation section of thick bamboo 19, sealing strip 34 is the rubber material, sealing strip 34 plays the effect that improves the leakproofness of first baffle 20 or second baffle 21 and a pressure regulation section of thick bamboo 19 junction.

The outer surface of the transition cylinder 2 is fixed with a feed hopper 3 through bolts, the inner side of the transition cylinder 2 is provided with a stirring shaft 13, and the outer surface of one end of the stirring shaft 13 is welded with a helical blade 14.

Preferably, helical blade 14 is helical structure, helical blade 14's surface and the inner wall laminating of an extrusion section of thick bamboo 1, make helical blade 14 when rotating, can impel plastics to the right side, the surface cover of (mixing) shaft 13 is equipped with stopper 12, and the periphery of stopper 12 and the inner wall welded fastening of an excessive section of thick bamboo 2, the inner chamber of feeder hopper 3 and the inner chamber intercommunication of an excessive section of thick bamboo 2, flexible structure is constituteed with stopper 12 to (mixing) shaft 13, cut off the inner chamber of an excessive section of thick bamboo 2 through stopper 12, can place the left side that plastic granules got into stopper 12, make plastic granules can only follow helical blade 14 and remove to the right side.

The other end of (mixing) shaft 13 has cup jointed connecting rod 10, and the surface of connecting rod 10 has cup jointed output section of thick bamboo 11, and the other pot head of connecting rod 10 is equipped with sleeve 9, and sleeve 9 passes through the screw and is connected fixedly with telescopic cylinder 8's output.

Preferably, the outer surface of the speed reducer 4 is fixed with a first support frame 5 through screws, the other end of the first support frame 5 is fixed with a motor 6 through screws, the output end of the motor 6 is connected and fixed with the input end of the speed reducer 4 through a coupler, the outer surface of the speed reducer 4 is fixed with a second support frame 7 through screws, the other end of the second support frame 7 is connected and fixed with a telescopic cylinder 8 through screws, a gear set is arranged in the speed reducer 4, the output end of the motor 6 is connected with the input shaft of the speed reducer 4, a gear set with a small diameter is arranged on the input shaft, a gear set with a large diameter is arranged on the output cylinder 11, a large gear is driven through a small gear, the output speed can be reduced, namely, the rotating speed of the output cylinder 11 is.

Preferably, the outer surfaces of both sides of the driven gear roller 26 are respectively engaged with the first rack 27 and the second rack 28, both ends of the driven gear roller 26 are respectively rotatably connected with the inner wall of the fixing box 16 and the outer surface of the pressure adjusting cylinder 19 through bearings, the outer surfaces of both sides of the driving gear 22 are respectively engaged with the limit gear block 25 and the driven gear roller 26, the limit gear block 25 is fixed on the inner wall of the fixing box 16 through screws, the width of the limit gear block 25 is the same as the width of the driving gear 22, the connecting block 23 and the driving gear 22 form a rotating structure, the driving gear 22 and the spring 24 form an elastic structure, the rear end of the spring 24 is fixedly connected with the outer surface of the pressure adjusting cylinder 19 through screws, as shown in fig. 3 and 7, the spring 24 plays a role of providing elastic force for the connecting block 23, so that the connecting block 23 can always maintain the state as shown in fig. 3, through the meshing of driving gear 22 and spacing tooth piece 25, can carry on spacingly to driving gear 22, drive driving gear 22 and keep away from spacing tooth piece 25 through pressing hand wheel 18 backward, just can make hand wheel 18 drive driving gear 22 and rotate, make driving gear 22 drive driven fluted roller 26 and rotate, can be driven fluted roller 26 and drive first rack 27 and second rack 28 up-and-down motion, make first rack 27 and second rack 28 drive first baffle 20 and second baffle 21 up-and-down motion respectively.

Preferably, the sleeve 9 and the connecting rod 10 form a rotating structure, the output cylinder 11 is disposed inside the speed reducer 4, the outer surface of the connecting rod 10 is uniformly provided with convex teeth, the inner wall of the connecting rod 10 is uniformly provided with grooves, the convex teeth are matched with the grooves, the connecting rod 10 and the output cylinder 11 form a telescopic structure, as shown in fig. 2 and 9, the sleeve 9 is rotatably connected with the connecting rod 10, so that when the connecting rod 10 rotates along with the output cylinder 11, the telescopic cylinder 8 cannot rotate along with the sleeve 9, and the convex teeth of the connecting rod 10 are engaged with the inner wall, so that the rotating force of the output cylinder 11 is better transmitted to the connecting rod 10.

The working principle is as follows: firstly, the plastic extruder with the pressure adjusting structure is in a power-on state through an external power supply, the plastic extruder with the pressure adjusting structure is electrically connected with an external control box through a wire, so that an electric appliance on the plastic extruder with the pressure adjusting structure can be controlled by the external control box to work, an air supply pipe of an external air compressor is connected with an air inlet and outlet end on a telescopic cylinder 8, the plastic extruder with the pressure adjusting structure is enabled to have electric energy, and then plastic particles are put into a feed hopper 3.

Through supplying power for motor 6, can make the input shaft in motor 6 drive speed reducer 4 rotate, the reduction gear group in the input shaft drive speed reducer 4 rotates, make output cylinder 11 make the deceleration motion, can make output cylinder 11 drive connecting rod 10 rotate, make connecting rod 10 can drive helical blade 14 through (mixing) shaft 13 and rotate, plastic granules in feeder hopper 3 can be sent into to extruding cylinder 1 along with helical blade 14's rotation, simultaneously through helical blade 14 and the laminating of the inner wall of extruding cylinder 1, make plastic granules be extruded between helical blade 14 and extruding cylinder 1, the extrusion generates heat, the heat can make plastics melt.

Then, the electromagnetic valve for controlling the air supply of the telescopic cylinder 8 through the external control box is opened, so that the telescopic rod in the telescopic cylinder 8 is extended by the air supply, the output end of the telescopic cylinder 8 can push the connecting rod 10 to extend out of the output cylinder 11, namely, the connecting rod 10 drives the stirring shaft 13 to extend rightward, the stirring shaft 13 pushes the plastic in the extrusion cylinder 1 through the spiral blade 14, and the plastic is discharged into the die head 15 through the pressure adjusting cylinder 19 and then is discharged outwards through the die head 15.

When the discharge pressure in the extrusion cylinder 1 needs to be controlled, the driving gear 22 is driven to rotate only by rotating the hand wheel 18, the driving gear 22 drives the driven toothed roller 26 to rotate, the driven toothed roller 26 can drive the first rack 27 and the second rack 28 to move up and down, the first rack 27 and the second rack 28 can drive the first partition plate 20 and the second partition plate 21 to move up and down respectively, the blocking range of the first partition plate 20 and the second partition plate 21 to the inner cavity of the pressure adjusting cylinder 19 can be adjusted, the discharge caliber of plastic can be adjusted, the discharge pressure can be increased by reducing the through caliber under the same volume, and the discharge pressure can be reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a plastics extruder with pressure regulation structure, includes a section of thick bamboo (1), speed reducer (4), motor (6), telescopic cylinder (8), die head (15) and manometer (17), its characterized in that: one end of the extruding cylinder (1) is fixed with a transition cylinder (2) through a bolt, the other end of the extruding cylinder (1) is fixed with a pressure adjusting cylinder (19) through a bolt, the other end of the pressure adjusting cylinder (19) is fixed with a connecting seat (29) through a screw, a die head (15) is arranged on the inner side of the connecting seat (29), a fixed box (16) is fixed on the outer surface of the front end of the pressure adjusting cylinder (19) through a screw, a pressure gauge (17) and a hand wheel (18) are arranged on the outer surface of the front end of the fixed box (16), the rear end of the hand wheel (18) is connected with a driving gear (22) through a rotating shaft, the rear end of the driving gear (22) is movably connected with a connecting block (23), a spring (24) is fixed on the rear end of the connecting block (23) through a screw, a limiting tooth block (25) is arranged at one end of the driving, one side of the driven toothed roll (26) is provided with a second rack (28), the other side of the driven toothed roll (26) is provided with a first rack (27), the outer surface of the first rack (27) is connected with a first partition plate (20), the outer surface of the second rack (28) is connected with a second partition plate (21), the first partition plate (20) and the second partition plate (21) are both arranged on the inner side of a pressure adjusting cylinder (19), the outer surface of a transition cylinder (2) is fixedly provided with a feed hopper (3) through bolts, the inner side of the transition cylinder (2) is provided with a stirring shaft (13), the outer surface of one end of the stirring shaft (13) is welded with a helical blade (14), the other end of the stirring shaft (13) is sleeved with a connecting rod (10), the outer surface of the connecting rod (10) is sleeved with an output cylinder (11), the other end of the connecting rod (10) is, and the sleeve (9) is fixedly connected with the output end of the telescopic cylinder (8) through a screw.

2. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: the surface of speed reducer (4) is through the screw fixation have first support frame (5), the other end of first support frame (5) is through the screw fixation have motor (6), the output of motor (6) passes through the shaft coupling and is connected fixedly with the input of speed reducer (4), the surface of speed reducer (4) is through the screw fixation have second support frame (7), and the other end of second support frame (7) passes through the screw and is connected fixedly with telescopic cylinder (8).

3. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: the sleeve (9) and the connecting rod (10) form a rotating structure, the output cylinder (11) is arranged on the inner side of the speed reducer (4), convex teeth are uniformly arranged on the outer surface of the connecting rod (10), grooves are uniformly formed in the inner wall of the connecting rod (10), the convex teeth are matched with the grooves, and the connecting rod (10) and the output cylinder (11) form a telescopic structure.

4. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: helical blade (14) are helical structure, the surface of helical blade (14) and the inner wall laminating of extruding a section of thick bamboo (1), the surface cover of (mixing) shaft (13) is equipped with stopper (12), and the periphery of stopper (12) and the inner wall welded fastening of an excessive section of thick bamboo (2), the inner chamber of feeder hopper (3) and the inner chamber intercommunication of an excessive section of thick bamboo (2), extending structure is constituteed with stopper (12) in (mixing) shaft (13).

5. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: the pressure regulating device is characterized in that a connecting groove (32) is formed in the inner wall of the pressure regulating cylinder (19), a rotating roller (33) is uniformly arranged on the inner wall of the connecting groove (32), the two ends of the rotating roller (33) are connected with the inner wall of the connecting groove (32) in a rotating mode through a rotating shaft, the rear ends of a first partition plate (20) and a second partition plate (21) are arranged on the inner side of the connecting groove (32), and the first partition plate (20) and the second partition plate (21) form a sliding structure with the connecting groove (32).

6. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: the outer surface cover of first baffle (20) is equipped with sealing strip (34), and the other end of sealing strip (34) is embedded on the inner wall of a pressure adjustment section of thick bamboo (19), the one end of first baffle (20) and second baffle (21) sets up in the inboard of spread groove (32), and the other end of first baffle (20) and second baffle (21) all runs through the surface of a pressure adjustment section of thick bamboo (19), first baffle (20) and second baffle (21) are opposite from top to bottom and arrange, the inner chamber of extruding cylinder (1) passes through the inner chamber intercommunication of a pressure adjustment section of thick bamboo (19) and die head (15).

7. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: the outer surfaces of two sides of the driven gear roller (26) are respectively meshed with a first rack (27) and a second rack (28), and two ends of the driven gear roller (26) are respectively in rotating connection with the inner wall of the fixed box (16) and the outer surface of the pressure adjusting cylinder (19) through bearings.

8. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: the outer surfaces of two sides of the driving gear (22) are respectively meshed with a limiting tooth block (25) and a driven tooth roller (26), the limiting tooth block (25) is fixed on the inner wall of the fixed box (16) through screws, and the width of the limiting tooth block (25) is the same as the width of the driving gear (22).

9. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: the connecting block (23) and the driving gear (22) form a rotating structure, the driving gear (22) and the spring (24) form an elastic structure, and the rear end of the spring (24) is fixedly connected with the outer surface of the pressure adjusting cylinder (19) through a screw.

10. A plastic extruder with a pressure regulating structure, according to claim 1, wherein: the last skin weld of connecting seat (29) has connecting pile (30), the both sides of connecting pile (30) are all rotated through articulated shaft and connecting pile (30) and are connected, the bottom of spacing knot (31) is contradicted with the surface of die head (15), the inner wall shape of connecting seat (29) is identical with the surface shape of die head (15), the one end outward appearance of die head (15) is discoid structure, the other end outward appearance of die head (15) is hourglass hopper-shaped structure.