A plastic extruder with a non-stop double-station screen changing function

Abstract

The present invention discloses a plastic extruder with a non-stop double-station screen changing function. The present invention relates to the field of plastic extrusion technology, including a motor, a plasticizer, a feeder and an extruder. The output end of the motor is connected to the plasticizer through a coupling. The feeder is fixedly mounted on the top of the plasticizer and close to the motor. The extruder is fixedly mounted on the top of the plasticizer and away from the motor. The feeder includes an external insert, which is fixedly connected to the top of the plasticizer. A spring is fixedly connected to the inside of the external insert. The plastic extruder with a non-stop double-station screen changing function, through the accumulation of plastic in the spiral tube, makes the spiral tube under the inner fixed disk have a tendency to pull downward similar to a spring, thereby causing the spiral amplitude of the spiral tube to tend to be vertical, so as to accelerate the flow speed of the plastic and prevent blockage in the tube.

Description

Technical Field

[0001] The invention relates to the technical field of plastic extrusion, in particular to a plastic extruder with a non-stop double-station screen changing function. Background Art

[0002] The extruder can rely on the pressure and shear force generated by the rotation of the screw to fully plasticize the material and evenly mix it before discharging. The plastic extruder can be matched with various plastic molding auxiliary machines such as pipes, films, braids, monofilaments, flat wires, strapping tapes, extruded nets, plates, profiles, granulation, cable coating, etc. to form various plastic extrusion molding production lines and produce various plastic products. It is widely used in the plastic processing industry.

[0003] There are several problems with existing plastic extruders: 1. Plastic particles in the pipe may cause blockage due to excessive conveying volume; 2. Because plastic particles have high viscosity after plasticization, the plasticized plastic will adhere to the propeller, thus affecting its service life; 3. In addition, the filter screen inside the existing plastic extruder is fixedly connected to the porous plate, so it is inconvenient to disassemble and replace, which increases the working time. Summary of the invention

[0004] To achieve the above purpose, the present invention is implemented through the following technical solutions: a plastic extruder with a non-stop double-station screen changing function, comprising a motor, a plasticizer, a feeder and an extruder, wherein the output end of the motor is connected to the plasticizer through a coupling, the bottom of the motor and the plasticizer are fixedly connected to a floor, the feeder is fixedly installed on the top of the plasticizer and close to the motor, and the extruder is fixedly installed on the top of the plasticizer and away from the motor;

[0005] The feeder includes an outer insert tube, which is fixedly connected to the top of the plasticizer, and a spring is fixedly connected to the inside of the outer insert tube, wherein the spring fixedly connected to the bottom of the inner slider plays a role in resetting it, and the top of the spring is fixedly connected to the inner slider, and the end of the inner slider away from the spring is fixedly connected to the spiral tube, and the outer side of the spiral tube is fixedly connected to an inner fixed disk, wherein the inner fixed disk plays a role in fixing the spiral tube above it to be stationary, and a pressure relief device is arranged above the inner fixed disk, one end of the pressure relief device is sleeved inside the spiral tube, and the end of the pressure relief device away from the spiral tube is provided with an inner wide hole, and the inner wide hole is opened inside the outer insert tube; wherein the spiral tube below the inner fixed disk will have a tendency to pull downward similar to that of the spring, thereby causing the spiral amplitude of the spiral tube to tend to be vertical, so as to accelerate the flow speed of the plastic and prevent blockage in the tube.

[0006] The top of the spiral tube is respectively sleeved with a No. 1 side tube and a No. 2 side tube, and the ends of the No. 1 side tube and the No. 2 side tube away from the spiral tube are fixedly connected to a hopper, and the hopper is sleeved on the top of the outer plug-in tube, and the inside of the hopper is slidably connected with a plug, and the outside of the plug is fixedly connected with a trapezoidal plug-in row, wherein the trapezoidal plug-in row is trapezoidal in shape, and the narrow end is inside the spiral tube and the wide end is connected to the plug, and the trapezoidal plug-in row is inserted into the inside of the spiral tube;

[0007] The plasticizer includes a side shell, one end of which is rotatably connected to the outside of the motor output end, the end of the side shell away from the motor is fixedly connected to an end face frame, the end of the end face frame away from the side shell is fixedly connected to the extruder, and the inside of the side shell and the end face frame are both provided with a screw feed paddle, one end of which is connected to the output end of the motor through a coupling, and the outer side of the screw feed paddle is extruded and adapted with a tough scraper, and the tough scraper is fixedly connected to the inner side of the end face frame. The outer side of the screw feed paddle is extruded and adapted with a tough scraper, and the tough scraper is tough and is always in contact with the paddle surface of the screw feed paddle, so the tough scraper plays the role of scraping off the plasticized plastic that has been adhering to the paddle surface of the screw feed paddle, thereby increasing the service life of the screw feed paddle.

[0008] Preferably, a plug-in frame is sleeved on the top of the end face frame, and the top of the plug-in frame is fixedly connected to the extruder, and vertical grooves are provided on both sides of the plug-in frame, and a moving block is slidably connected to the inside of the vertical groove, and the outer end of the moving block is fixedly connected to the inner moving frame, and the inner part of the inner moving frame is fixedly connected to a heating wire, and heat-blocking sheets are symmetrically arranged on both sides of the heating wire, wherein the heat-blocking sheets are elastic, so when the heating wire moves upward, a part of the heating source will be covered by the heat-blocking sheets, thereby reducing the temperature of the inner side of the end face frame, and the heat-blocking sheets are fixedly connected to the two ends of the inner side of the inner moving frame, and a temperature controller is arranged below the inner moving frame, and the temperature controller is fixedly installed inside the end face frame.

[0009] Preferably, the extruder includes a support block, which is fixedly connected to the top of the sleeve frame, a support shaft is fixedly connected to the inside of the support block, an end of the support shaft away from the support block is fixedly connected to a triangular plate, an outer end of the triangular plate is slidably connected to an inner ring, a side of the inner ring away from the triangular plate is slidably connected to a porous plate, and the porous plate is fixedly connected to the outer end face of the end face frame.

[0010] Preferably, an outer ring is inserted into the inner side of the porous plate, a filter screen is fixedly connected to the inner side of the outer ring, and side stacks are symmetrically arranged on both sides of the filter screen, wherein the side stacks symmetrically arranged on both sides of the filter screen are fitted with the porous plate to prevent the plasticized plastic from leaking out, the upper and lower ends of the side stacks are fitted with the outer side of the porous plate, the side stacks are fixedly connected to the inner side of the outer ring, and the filter screen and the side stacks are fixedly connected to the outer side of the inner ring.

[0011] Preferably, both sides of the porous plate are fixedly connected with a No. 2 magnetic block, and the outer side of the No. 2 magnetic block is provided with a No. 1 magnetic block, and the No. 1 magnetic block is fixedly connected to the outer side of the side stack. The No. 1 magnetic block fixedly connected to both sides of the side stack and the No. 2 magnetic block fixedly connected to both sides of the porous plate are in an adsorption state, so as to make the side stack just aligned with the surface of the porous plate.

[0012] Preferably, the pressure relief device includes a single flow device, one end of which is sleeved inside the spiral tube, and the end of the single flow device away from the spiral tube is fixedly connected with a wide tube and a narrow tube respectively, the narrow tube is arranged inside the wide tube, and the ends of the wide tube and the narrow tube away from the single flow device are both connected to the inner wide hole.

[0013] Preferably, an elastic band is fixedly connected to the outside of the narrow tube, and one end of the elastic band away from the narrow tube is fixedly connected to the inside of the wide tube. A sleeve is sleeved on the outside of the wide tube, and one end of the sleeve located inside the wide tube is fixedly connected to an extension block, and a telescopic rod is fixedly connected to the top of the extension block, and a veneer block is fixedly connected to the top of the telescopic rod, and the side of the veneer block away from the telescopic rod is extruded and adapted to the outside of the narrow tube. When too much plastic is transported into the narrow tube and extruded outward, the veneer block that originally limits the width of the outside of the narrow tube will drive the telescopic rod to contract outward, so as to increase the cross-sectional area of ​​the narrow tube and allow the plastic to pass through.

[0014] Preferably, the single flow device includes an external pipe, one end of which is sleeved inside the spiral pipe, the end of which is away from the spiral pipe is fixedly connected to the wide pipe and the narrow pipe respectively, the inside of the external pipe is fixedly connected with a folding plate, the outside of the folding plate is fixedly connected with an arc strip, the end of the arc strip away from the folding plate is fixedly connected with an elastic arc, and the end of the elastic arc away from the arc strip is fixedly connected with a soft blocking plate. The soft blocking plate fills the gap between each single flow transfer plate to prevent the circulation of plastic, and the elastic arc fixedly connected to the other side of the soft blocking plate not only resets the soft blocking plate, but also blocks the plastic that has not formed a blockage.

[0015] Preferably, the interior of the external tube is fixedly connected with a support, the interior of the support is rotatably connected with a single-flow plate, and the outer side of the single-flow plate is extrusion-fitted with the soft-blocking plate.

[0016] Preferably, the temperature controller includes a fixed seat, wherein the fixed seat has a heat insulating effect and also serves to allow the thermal bimetallic strip to only sense the temperature inside the end face frame. The fixed seat is fixedly installed inside the end face frame, a hole is provided on the top of the fixed seat, the internal rotation of the fixed seat is connected to the thermal bimetallic strip, the top of the thermal bimetallic strip is fixedly connected to a top pressure strip, and the top of the top pressure strip is extruded and adapted to the inner moving frame.

[0017] The present invention provides a plastic extruder with a non-stop double-station screen changing function.

[0018] Beneficial effects:

[0019] 1. The plastic extruder with the function of double-station screen changing without stopping has an inner slider fixedly connected to the outer side of the spiral tube, and the inner slider is slidably connected to the inner side of the outer plug tube. Therefore, the spiral tube under the inner fixed plate will have a tendency to be pulled downward like a spring, thereby causing the spiral amplitude of the spiral tube to tend to be vertical, so as to speed up the flow of plastic and prevent blockage in the tube.

[0020] Second, the plastic extruder with the function of double-station screen changing without stopping, when the blocked plastic extends to the position of the trapezoidal plug-in row, the trapezoidal plug-in row will be squeezed outward, wherein the trapezoidal plug-in row is trapezoidal in shape and the narrow end is in the spiral tube and the wide end is connected to the plug, so that the narrow end of the trapezoidal plug-in row will extend out of the spiral tube, and at the same time the wide end will move upward with the plug, so that the plug can respectively block the parts where the No. 1 side tube and the No. 2 side tube are connected to the hopper, thereby stopping the plastic from continuing to be transported.

[0021] 3. The plastic extruder with the function of double-station screen changing without stopping will also move to the left through the soft blocking plate that originally squeezes the left side of the single flow plate. The soft blocking plate fills the gap between each single flow plate to prevent the circulation of plastic. At the same time, the elastic arc fixedly connected to the other side of the soft blocking plate not only resets the soft blocking plate, but also blocks the plastic that has not formed a blockage.

[0022] Fourth, the plastic extruder with the function of double-station screen changing without stopping is equipped with a tough scraper through the outer extrusion of the screw feed propeller. The tough scraper is tough and is always in contact with the propeller surface of the screw feed propeller. Therefore, the tough scraper plays a role in scraping off the plasticized plastic that has been adhering to the propeller surface of the screw feed propeller, thereby increasing the service life of the screw feed propeller.

[0023] 5. The plastic extruder with the function of double-station screen changing without stopping the machine has an inner moving frame that slides inside the vertical groove through a moving block, so the heating wire will also move upward together, but heat-blocking sheets are symmetrically arranged on both sides of the heating wire, and the heat-blocking sheets are elastic. Therefore, when the heating wire moves upward, a part of the heating source will be covered by the heat-blocking sheets, thereby reducing the temperature inside the end face frame.

[0024] 5. The plastic extruder with the function of double-station screen changing without stopping the machine rotates the inner ring on the outer end face of the triangular plate so that multiple filter screens and multiple side stacking sheets connected to the outer side of the inner ring will rotate, thereby instantly replacing the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the external structure of a plastic extruder with a non-stop double-station screen changing function according to the present invention;

[0026] Figure 2 It is a cross-sectional structural schematic diagram of a plastic extruder with a non-stop double-station screen changing function according to the present invention;

[0027] Figure 3 This is a schematic diagram of the front cross-section structure of the feeder of the present invention;

[0028] Figure 4 It is a schematic diagram of the side section structure of the feeder of the present invention;

[0029] Figure 5 It is a schematic diagram of the cross-sectional structure of the pressure relief device of the present invention;

[0030] Figure 6 It is a schematic diagram of the cross-sectional structure of the single flow device of the present invention;

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the plasticizer of the present invention;

[0032] Figure 8 This is a schematic diagram of the cross-sectional structure of the temperature controller of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the extruder of the present invention.

[0034] In the figure: 1, motor; 2, plasticizer; 3, feeder; 4, extruder; 5, floor; 31, external plug; 32, spring; 33, inner slider; 34, spiral tube; 35, inner wide hole; 36, inner fixed plate; 37, pressure relief device; 38, side pipe No. 1; 39, side pipe No. 2; 30, hopper; 301, plug; 302, trapezoidal plug row; 371, single flow device; 372, wide pipe; 373, narrow pipe; 374, elastic amplitude; 375, sleeve; 376, extension block; 377, telescopic rod; 378, veneer block; 3711, external tube; 3712, folding plate; 3713, arc strip; 37 14. Elastic arc; 3715. Soft-blocking plate; 3716. Single-flow plate; 3717. Support; 21. Side shell; 22. End frame; 23. Screw-in propeller; 24. Tough scraper; 25. Insert frame; 26. Vertical slot; 27. Shift block; 28. Inner shift frame; 29. ​​Heat-blocking plate; 20. Heating wire; 201. Temperature controller; 2011. Fixed seat; 2012. Thermal bimetallic strip; 2013. Top pressure strip; 41. Support block; 42. Support shaft; 43. Triangular plate; 44. Inner ring; 45. Perforated plate; 46. Outer ring; 47. Filter; 48. Side stack; 49. No. 1 magnetic block; 40. No. 2 magnetic block. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0036] The first embodiment, as Figure 1-Figure 5 As shown, the present invention provides a technical solution: a plastic extruder with a non-stop double-station screen changing function, comprising a motor 1, a plasticizer 2, a feeder 3 and an extruder 4, wherein the output end of the motor 1 is connected to the plasticizer 2 through a coupling, the motor 1 and the bottom of the plasticizer 2 are both fixedly connected with a floor 5, the feeder 3 is fixedly mounted on the top of the plasticizer 2 and close to the motor 1, and the extruder 4 is fixedly mounted on the top of the plasticizer 2 and away from the motor 1;

[0037] The feeder 3 includes an outer insert 31, which is fixedly connected to the top of the plasticizer 2. A spring 32 is fixedly connected to the inside of the outer insert 31. An inner slider 33 is fixedly connected to the top of the spring 32. An end of the inner slider 33 away from the spring 32 is fixedly connected to a spiral tube 34. An inner fixed disk 36 is fixedly connected to the outside of the spiral tube 34. A pressure relief device 37 is arranged above the inner fixed disk 36. One end of the pressure relief device 37 is sleeved inside the spiral tube 34. The pressure relief device 37 is away from the spiral tube 34. An inner wide hole 35 is provided at one end, and the inner wide hole 35 is opened inside the outer insert tube 31. The top of the spiral tube 34 is respectively sleeved with a No. 1 side tube 38 and a No. 2 side tube 39. The No. 1 side tube 38 and the No. 2 side tube 39 are fixedly connected with a hopper 30 at one end away from the spiral tube 34. The hopper 30 is sleeved on the top of the outer insert tube 31. The inside of the hopper 30 is slidably connected with a plug 301, and the outer side of the plug 301 is fixedly connected with a trapezoidal plug row 302, and the trapezoidal plug row 302 is inserted into the inside of the spiral tube 34.

[0038] By putting plastic into the hopper 30, because the bottom of the hopper 30 is blocked by the plug 301, the plastic can only flow out from the No. 1 side tube 38 and the No. 2 side tube 39, and the bottoms of the No. 1 side tube 38 and the No. 2 side tube 39 are connected to the spiral tube 34, so the plastic will descend along the internal spiral of the spiral tube 34 to convey the processed materials.

[0039] However, as the amount of plastic conveyed increases, the weight of the spiral tube 34 itself will increase with the increase of plastic, wherein the outer side of the spiral tube 34 is fixedly connected to an inner fixing plate 36, and the inner fixing plate 36 serves to keep the spiral tube 34 above it fixed and stationary, while the spiral tube 34 below it will slowly sink due to its own elastic material and the increase in the amount of plastic conveyed. In addition, the outer side of the spiral tube 34 is fixedly connected to an inner slider 33, and the inner slider 33 is slidably connected to the inner side of the outer insert tube 31, so the spiral tube 34 below the inner fixing plate 36 will have a tendency to pull downward like a spring, thereby causing the spiral amplitude of the spiral tube 34 to tend to be vertical, so as to accelerate the flow speed of the plastic and prevent blockage in the tube.

[0040] The spring 32 fixedly connected to the bottom of the inner slide block 33 plays a role in resetting it.

[0041] When the above operation is unable to convey excessive amounts of plastic and a blockage occurs in the tube, the plastic will slowly get blocked from bottom to top along the inside of the spiral tube 34, and when the blocked plastic extends to the position of the trapezoidal plug row 302, the trapezoidal plug row 302 will be squeezed outwards, wherein the trapezoidal plug row 302 is trapezoidal in shape and the narrow end is in the spiral tube 34 while the wide end is connected to the plug 301, so that the narrow end of the trapezoidal plug row 302 will extend out of the spiral tube 34, and the wide end will move upward with the plug 301, so that the plug 301 can respectively block the parts where the No. 1 side tube 38 and the No. 2 side tube 39 are connected to the hopper 30, thereby stopping the plastic from continuing to be conveyed.

[0042] The pressure relief device 37 includes a single flow device 371, one end of which is sleeved inside the spiral tube 34, and one end of the single flow device 371 away from the spiral tube 34 is fixedly connected to a wide tube 372 and a narrow tube 373, respectively. The narrow tube 373 is arranged inside the wide tube 372, and one end of the wide tube 372 and the narrow tube 373 away from the single flow device 371 are both connected to the inner wide hole 35, and the outer side of the narrow tube 373 is fixedly connected to an elastic amplitude 374. One end of the web 374 away from the narrow tube 373 is fixedly connected to the inner side of the wide tube 372, and a sleeve 375 is sleeved on the outer side of the wide tube 372. One end of the sleeve 375 inside the wide tube 372 is fixedly connected to an extension block 376, and the top of the extension block 376 is fixedly connected to a telescopic rod 377, and the top of the telescopic rod 377 is fixedly connected to a veneer block 378. The side of the veneer block 378 away from the telescopic rod 377 is squeezed and adapted to the outer side of the narrow tube 373.

[0043] The single flow device 371 includes an external tube 3711, one end of which is sleeved inside the spiral tube 34, and the end of the external tube 3711 away from the spiral tube 34 is fixedly connected to the wide tube 372 and the narrow tube 373 respectively, the inside of the external tube 3711 is fixedly connected with a folding plate 3712, the outside of the folding plate 3712 is fixedly connected with an arc strip 3713, the end of the arc strip 3713 away from the folding plate 3712 is fixedly connected with an elastic arc 3714, and the end of the elastic arc 3714 away from the arc strip 3713 is fixedly connected with a soft blocking plate 3715, the inside of the external tube 3711 is fixedly connected with a support 3717, the inside of the support 3717 is rotatably connected with a single flow transfer plate 3716, and the outer side of the single flow transfer plate 3716 is extruded and adapted with the soft blocking plate 3715.

[0044] In addition, before the above situation occurs, the plastic in the spiral tube 34 will collide with the single-flow plate 3716 due to accumulation, so the single-flow plate 3716 will deflect to the left with the support 3717 as the fulcrum. At this time, the soft blocking plate 3715 that originally squeezed the left side of the single-flow plate 3716 will also move to the left, wherein the soft blocking plate 3715 fills the gap between each single-flow plate 3716 to prevent the circulation of plastic. At the same time, the elastic arc 3714 fixedly connected to the other side of the soft blocking plate 3715 not only plays a role in resetting the soft blocking plate 3715, but also plays a role in blocking the plastic that has not formed a blockage.

[0045] Then, the plastic passing through the external tube 3711 will enter the narrow tube 373, wherein the narrow tube 373 is elastic. Therefore, when too much plastic is transported into the narrow tube 373 and squeezed outward, the veneer block 378 that has been limiting the width of the outer side of the narrow tube 373 will drive the telescopic rod 377 to contract outward, so as to increase the cross-sectional area of ​​the narrow tube 373 to allow the plastic to pass through, and the plastic output from the narrow tube 373 will enter the inner wide hole 35 and flow into the outer insert tube 31, and finally merge with the plastic flowing out of the spiral tube 34, so as to achieve the effect of diverting and transporting a large amount of plastic.

[0046] The second embodiment, as Figure 6-Figure 9As shown, the plasticizer 2 includes a side shell 21, one end of the side shell 21 is rotatably connected to the outside of the output end of the motor 1, the end of the side shell 21 away from the motor 1 is fixedly connected to the end frame 22, the end of the end frame 22 away from the side shell 21 is fixedly connected to the extruder 4, the side shell 21 and the end frame 22 are both provided with a screw feed paddle 23 inside, one end of the screw feed paddle 23 is connected to the output end of the motor 1 through a coupling, the outer side of the screw feed paddle 23 is extruded and adapted with a tough scraper 24, the tough scraper 24 is fixedly connected to the inner side of the end frame 22, and the end frame 2 2 is sleeved with a plug-in frame 25 at the top, the top of the plug-in frame 25 is fixedly connected to the extruder 4, vertical grooves 26 are provided on both sides of the plug-in frame 25, a shift block 27 is slidably connected inside the vertical groove 26, an inner shift frame 28 is fixedly connected to the outer end of the shift block 27, a heating wire 20 is fixedly connected inside the inner shift frame 28, heat-blocking sheets 29 are symmetrically arranged on both sides of the heating wire 20, the heat-blocking sheets 29 are fixedly connected to the two ends of the inner side of the inner shift frame 28, a temperature controller 201 is arranged below the inner shift frame 28, and the temperature controller 201 is fixedly installed inside the end face frame 22.

[0047] At this time, the motor 1 is started, wherein the motor 1 and the plasticizer 2 are both placed on the ground, so that the screw propeller 23 connected to the output end thereof through the coupling will rotate, and the plastic flowing out from the external insert tube 31 will spirally advance to the right along with the screw propeller 23, wherein the outer side of the screw propeller 23 is extruded and adapted with a tough scraper 24, and the tough scraper 24 is tough and is always in contact with the paddle surface of the screw propeller 23, so the tough scraper 24 serves to scrape off the plasticized plastic that has been adhering to the paddle surface of the screw propeller 23, thereby increasing the service life of the screw propeller 23.

[0048] The temperature controller 201 includes a fixed seat 2011, which is fixedly installed inside the end frame 22. A hole is opened on the top of the fixed seat 2011. A thermal bimetallic strip 2012 is rotatably connected inside the fixed seat 2011. A top pressure strip 2013 is fixedly connected to the top of the thermal bimetallic strip 2012. The top of the top pressure strip 2013 is extruded and adapted to the inner moving frame 28.

[0049] The electric heating wire 20 fixedly connected to the inner moving frame 28 is started. At this time, the heating wire 20 is heated to realize the plasticization of the plastic. However, when the temperature inside the end face frame 22 deviates too much and the temperature is too high, the hot bimetallic strip 2012 connected to the inside of the fixed seat 2011 will be heated and deflected upward. The fixed seat 2011 has a heat insulation effect and also makes the hot bimetallic strip 2012 only feel the temperature inside the end face frame 22. When the temperature rises, the deformation of the active layer of the hot bimetallic strip 2012 is greater than the deformation of the passive layer, so that the whole bimetallic strip will bend to the passive layer side, and the curvature of the composite material changes to produce deformation. When the temperature drops, the passive layer drives the active layer to bend in the opposite direction. The top of the thermal bimetal strip 2012 is fixedly connected with a top pressure strip 2013, so the top pressure strip 2013 will pass through the hole on the top of the fixed seat 2011 and squeeze the inner moving frame 28 upward, and the inner moving frame 28 slides inside the vertical groove 26 through the moving block 27, so the heating wire 20 will also move upward together, but the heating wire 20 is symmetrically provided with heat-blocking plates 29 on both sides, wherein the heat-blocking plates 29 are elastic, so when the heating wire 20 moves upward, a part of the heating source will be covered by the heat-blocking plates 29, thereby reducing the temperature on the inner side of the end face frame 22.

[0050] The extruder 4 includes a support block 41, which is fixedly connected to the top of the plug-in frame 25, and a support shaft 42 is fixedly connected inside the support block 41. The end of the support shaft 42 away from the support block 41 is fixedly connected to a triangular plate 43, and the outer end of the triangular plate 43 is slidably connected to an inner ring 44, and the side of the inner ring 44 away from the triangular plate 43 is slidably connected to a porous plate 45, and the porous plate 45 is fixedly connected to the outer end face of the end face frame 22, and the inner side of the porous plate 45 is plugged with an outer ring 46, and the outer ring 4 6 is fixedly connected to the inner side of the filter screen 47, and side stacking sheets 48 are symmetrically arranged on both sides of the filter screen 47, and the upper and lower ends of the side stacking sheets 48 are adapted to the outer side of the porous plate 45, and the side stacking sheets 48 are fixedly connected to the inner side of the outer ring 46, and the filter screen 47 and the side stacking sheets 48 are fixedly connected to the outer side of the inner ring 44, and the two sides of the porous plate 45 are fixedly connected to the second magnetic block 40, and the outer side of the second magnetic block 40 is provided with a first magnetic block 49, and the first magnetic block 49 is fixedly connected to the outer side of the side stacking sheets 48.

[0051] The plasticized plastic flowing out from the inner side of the end face frame 22 will hit the filter screen 47, wherein the filter screen 47 plays the role of filtering impurities in the plasticized plastic, and then the plasticized plastic will be squeezed out from the other end of the porous plate 45, so as to finally achieve the extrusion of the plasticized plastic. The side stacking sheets 48 symmetrically arranged on both sides of the filter screen 47 are both fitted with the porous plate 45 to prevent the plasticized plastic from leaking out, and the No. 1 magnetic block 49 fixedly connected to both sides of the side stacking sheets 48 and the No. 2 magnetic block 40 fixedly connected to both sides of the porous plate 45 are in an adsorption state between them, so as to make the side stacking sheets 48 just aligned with the surface of the porous plate 45.

[0052] In addition, by rotating the inner ring 44 on the outer end surface of the triangular plate 43, the multiple filter screens 47 and the multiple side stacking sheets 48 connected to the outer side of the inner ring 44 will rotate, thereby playing a role in replacing the filter screens 47.

[0053] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A plastic extruder with a non-stop double-station screen changing function, comprising a motor (1), a plasticizer (2), a feeder (3) and an extruder (4), characterized in that: The output end of the motor (1) is connected to the plasticizer (2) via a coupling, the bottom of the motor (1) and the plasticizer (2) are both fixedly connected to a floor (5), the feeder (3) is fixedly mounted on the top of the plasticizer (2) and close to the motor (1), and the extruder (4) is fixedly mounted on the top of the plasticizer (2) and away from the motor (1); The feeder (3) comprises an outer insert tube (31), the outer insert tube (31) is fixedly connected to the top of the plasticizer (2), a spring (32) is fixedly connected to the inside of the outer insert tube (31), an inner slider (33) is fixedly connected to the top of the spring (32), an end of the inner slider (33) away from the spring (32) is fixedly connected to a spiral tube (34), an inner fixed disk (36) is fixedly connected to the outside of the spiral tube (34), a pressure relief device (37) is arranged above the inner fixed disk (36), one end of the pressure relief device (37) is sleeved inside the spiral tube (34), and an inner wide hole (35) is arranged at one end of the pressure relief device (37) away from the spiral tube (34), and the inner wide hole (35) is opened inside the outer insert tube (31); The top of the spiral tube (34) is respectively sleeved with a first side tube (38) and a second side tube (39); the ends of the first side tube (38) and the second side tube (39) away from the spiral tube (34) are fixedly connected to a hopper (30); the hopper (30) is sleeved on the top of the outer plug (31); a plug (301) is slidably connected to the inside of the hopper (30); a trapezoidal plug row (302) is fixedly connected to the outside of the plug (301); and the trapezoidal plug row (302) is inserted into the inside of the spiral tube (34); The plasticizer (2) comprises a side shell (21), one end of the side shell (21) is rotatably connected to the outside of the output end of the motor (1), one end of the side shell (21) away from the motor (1) is fixedly connected to an end face frame (22), one end of the end face frame (22) away from the side shell (21) is fixedly connected to the extruder (4), and a screw feed propeller (23) is arranged inside the side shell (21) and the end face frame (22), one end of the screw feed propeller (23) is connected to the output end of the motor (1) via a coupling, and a tough scraper (24) is extruded and adapted on the outside of the screw feed propeller (23), and the tough scraper (24) is fixedly connected to the inside of the end face frame (22).

2. The plastic extruder with a non-stop double-station screen changing function according to claim 1, characterized in that: The top of the end face frame (22) is sleeved with a plug-in frame (25), the top of the plug-in frame (25) is fixedly connected to the extruder (4), vertical grooves (26) are provided on both sides of the plug-in frame (25), a shift block (27) is slidably connected inside the vertical groove (26), an inner shift frame (28) is fixedly connected at the outer end of the shift block (27), a heating wire (20) is fixedly connected inside the inner shift frame (28), heat-blocking plates (29) are symmetrically provided on both sides of the heating wire (20), the heat-blocking plates (29) are fixedly connected to the two ends of the inner side of the inner shift frame (28), a temperature controller (201) is provided below the inner shift frame (28), and the temperature controller (201) is fixedly installed inside the end face frame (22).

3. The plastic extruder with non-stop double-station screen changing function according to claim 1, characterized in that: The extruder (4) comprises a support block (41), wherein the support block (41) is fixedly connected to the top of the insert frame (25), a support shaft (42) is fixedly connected inside the support block (41), an end of the support shaft (42) away from the support block (41) is fixedly connected to a triangular plate (43), an outer end of the triangular plate (43) is slidably connected to an inner ring (44), a side of the inner ring (44) away from the triangular plate (43) is slidably connected to a porous plate (45), and the porous plate (45) is fixedly connected to the outer end face of the end face frame (22).

4. The plastic extruder with a non-stop double-station screen changing function according to claim 3, characterized in that: An outer ring (46) is inserted into the inner side of the porous plate (45), a filter screen (47) is fixedly connected to the inner side of the outer ring (46), side stacking plates (48) are symmetrically arranged on both sides of the filter screen (47), upper and lower ends of the side stacking plates (48) are adapted to the outer side of the porous plate (45), the side stacking plates (48) are fixedly connected to the inner side of the outer ring (46), and the filter screen (47) and the side stacking plates (48) are fixedly connected to the outer side of the inner ring (44).

5. The plastic extruder with non-stop double-station screen changing function according to claim 3, characterized in that: A second magnetic block (40) is fixedly connected to both sides of the porous plate (45), a first magnetic block (49) is arranged outside the second magnetic block (40), and the first magnetic block (49) is fixedly connected to the outside of the side lamination (48).

6. The plastic extruder with non-stop double-station screen changing function according to claim 1, characterized in that: The pressure relief device (37) comprises a single flow device (371), one end of the single flow device (371) being sleeved inside the spiral tube (34), one end of the single flow device (371) being away from the spiral tube (34) being fixedly connected to a wide tube (372) and a narrow tube (373), respectively, the narrow tube (373) being arranged inside the wide tube (372), and one end of the wide tube (372) and the narrow tube (373) being away from the single flow device (371) being connected to the inner wide hole (35).

7. The plastic extruder with a non-stop double-station screen changing function according to claim 6, characterized in that: An elastic band (374) is fixedly connected to the outside of the narrow tube (373); one end of the elastic band (374) away from the narrow tube (373) is fixedly connected to the inside of the wide tube (372); a sleeve (375) is sleeved on the outside of the wide tube (372); one end of the sleeve (375) located inside the wide tube (372) is fixedly connected to an extension block (376); a telescopic rod (377) is fixedly connected to the top of the extension block (376); a veneer block (378) is fixedly connected to the top of the telescopic rod (377); a side of the veneer block (378) away from the telescopic rod (377) is pressed and fitted with the outside of the narrow tube (373).

8. The plastic extruder with a non-stop double-station screen changing function according to claim 6, characterized in that: The single flow device (371) comprises an external tube (3711), one end of the external tube (3711) is sleeved inside the spiral tube (34), one end of the external tube (3711) away from the spiral tube (34) is fixedly connected to the wide tube (372) and the narrow tube (373), respectively, the inside of the external tube (3711) is fixedly connected to a folding plate (3712), the outside of the folding plate (3712) is fixedly connected to an arc-shaped strip (3713), one end of the arc-shaped strip (3713) away from the folding plate (3712) is fixedly connected to an elastic arc (3714), and one end of the elastic arc (3714) away from the arc-shaped strip (3713) is fixedly connected to a soft blocking plate (3715).

9. The plastic extruder with a non-stop double-station screen changing function according to claim 8, characterized in that: The interior of the external tube (3711) is fixedly connected to a support (3717), the interior of the support (3717) is rotatably connected to a single-flow plate (3716), and the outer side of the single-flow plate (3716) is extruded and adapted to the soft-blocking plate (3715).

10. The plastic extruder with a non-stop double-station screen changing function according to claim 2, characterized in that: The temperature controller (201) comprises a fixed seat (2011), the fixed seat (2011) is fixedly mounted inside the end face frame (22), a hole is formed on the top of the fixed seat (2011), a thermal bimetallic strip (2012) is rotatably connected inside the fixed seat (2011), a top pressure strip (2013) is fixedly connected to the top of the thermal bimetallic strip (2012), and the top of the top pressure strip (2013) is extruded and adapted to the inner moving frame (28).

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