Conical twin-screw extrusion equipment with SKD bushing

Abstract

The invention discloses conical double-screw extrusion equipment with an SKD bushing, and relates to the technical field of conical double screws. The device comprises a rack, a conical double-screw barrel is fixed to the rear end of the upper portion of the rack, an extrusion plate is fixed to the discharging end of the conical double-screw barrel, an upper die and a lower die are arranged under the extrusion plate, and clamping assemblies corresponding to the upper die and the lower die are arranged in the middles of the two opposite sides of the rack. By arranging the clamping assemblies between the rack and the upper mold and the lower mold, molds of different specifications and shapes can be replaced, various plastic finished products such as waved plates, flat plates and round pipes can be manufactured, then the main flow dividing opening and the three auxiliary flow dividing openings are formed in the discharging end of the conical double-screw barrel, follow-up injection molding is more uniform, and the product quality is improved. And the distance between a plurality of first springs and a plurality of fixing plates is changed through an arranged screw rod, waste of raw materials is reduced, meanwhile, injection molding liquid is extruded out through a fixed pipe and three movable pipes at the same time, and the working efficiency of the equipment can be improved.

Description

Technical Field

[0001] The invention belongs to the field of conical twin-screws, and in particular relates to a conical twin-screw extrusion device with an SKD sleeve. Background Art

[0002] SKD is a semi-bulk part, which is common in the manufacturing and installation process of some conical twin-screw extruder equipment. The conical twin-screw extruder is a highly efficient mixing and extrusion equipment. The machine has the characteristics of low shear rate, material is not easy to decompose, plasticizing and mixing uniformly, stable quality, high output, wide application range, and long service life. The conical twin-screw extruder has the characteristics of uniform plasticizing and mixing, high output, stable quality, wide application range, long service life, and direct molding of PVC powder. Equipped with corresponding molding head molds and auxiliary machines, various thermoplastic plastics, especially rigid polyvinyl chloride powder, can be directly extruded into plastic products such as tubes, plates, sheets, rods, films and profiles, and can also complete the modification of various plastics and powder granulation process.

[0003] The Chinese patent with the publication number CN111113842A discloses a twin-screw extruder tablet press, which relates to the technical field of mixing equipment, and includes a frame, a receiving hopper arranged on the frame, an extrusion mechanism and a tablet press mechanism; the extrusion mechanism includes a mixing chamber connected to the bottom of the receiving hopper and two mutually intermeshing conical screws arranged in the mixing chamber, wherein the rear end of one conical screw extends out of the mixing chamber and is connected to a first motor through a first reducer, and the two conical screws are connected through a gear set meshing to achieve transmission connection, and the front end of the mixing chamber is provided with a discharge port, and the front ends of the two conical screws extend into the discharge port, and a duckbill-shaped rubber baffle is respectively provided on the left and right sides of the discharge port, and a water jacket into which high-temperature water or steam can be passed is installed on the inner wall of the mixing chamber. The present invention can improve the quality of tablets, reduce the labor intensity of workers, and thus improve production efficiency.

[0004] The above application can only achieve the purpose of pressing plastic liquid into sheets, and its scope of use is relatively small. In addition, the existing conical twin-screw extruder usually has only one discharge port, which leads to the injection molding at the edge of the mold not being in place, and the product is thicker in the middle and thinner on both sides, affecting the yield rate, and the injection molding time is relatively long. In addition, some equipment is also equipped with a diversion port for diversion and discharge. Although the uniformity of product injection molding is improved, it is still necessary to disassemble and replace the diversion ports with different spacings according to the shape of the injection molding and the width of the model, which makes it more troublesome to use and has low work efficiency.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a conical twin-screw extruder with an SKD sleeve, thereby solving the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A conical twin-screw extruder with SKD inserts, comprising: a frame, a conical twin-screw barrel is fixed at the rear end above the frame, an extrusion plate is fixed at the discharge end of the conical twin-screw barrel, upper and lower molds are installed just below the extrusion plate, clamping assemblies corresponding to the upper and lower molds are installed in the middle of opposite sides of the frame, a cooling box located in front of the upper and lower molds is fixed in the middle of the frame, and a traction assembly located in front of the cooling box is fixed at the front end of the frame;

[0009] A discharge port corresponding to the discharge end of the conical twin-screw barrel, a main diversion port and three auxiliary diversion ports connected to the discharge port are provided inside the extrusion plate. A fixed tube is fixed around the main diversion port, and movable tubes are slidably matched around the three auxiliary diversion ports. The lower ends of the fixed tube and the three movable tubes are sealed and connected to the feed ports of the upper and lower molds. Fixed plates are fixed around the fixed tube and the three movable tubes, and a first spring is fixed between two adjacent fixed plates. A screw is rotatably matched in the middle of the rightmost fixed plate, and the screw is matched with the middle thread of the leftmost fixed plate.

[0010] Optionally, the upper and lower molds include an upper mold and a lower mold, and the inner cavities of the upper mold and the lower mold can be a wavy structure, a flat structure, or a cylindrical structure.

[0011] By adopting the above technical solution and providing replaceable upper and lower molds, various plastic finished products such as corrugated plates, flat plates, and round tubes can be made, which are more flexible and convenient to use.

[0012] Optionally, a liquid injection port corresponding to the fixed tube and the three movable tubes is opened in the middle of the upper mold, and sealing strips are fixed to the inner wall of the liquid injection port and the surrounding sides of the fixed tube and the three movable tubes. Circular grooves corresponding to the clamping components are opened in the middle of the opposite sides of the upper mold and the lower mold.

[0013] By adopting the above technical solution and utilizing the provided sealing strip, the lower ends of the fixed tube and the three movable tubes can be sealed around when docking with the injection port, thereby reducing the flow of the injection liquid to the outside of the upper mold.

[0014] Optionally, the clamping assembly includes an electric telescopic rod fixed to the lower side of the middle part of the frame, two hooks rotatably engaged with the lower end of the electric telescopic rod, and a second spring fixed between the two hooks, and the lower ends of the two hooks are arc-shaped surfaces, the two hooks correspond to the circular grooves, and the middle parts of the opposite sides of the frame are provided with elastic handles corresponding to the upper mold.

[0015] By adopting the above technical solution, two hooks are squeezed downward and extended into the circular groove in the middle of the upper and lower molds, and the principle of elastic rebound of the second spring is utilized to realize the clamping relationship between the two hooks and the upper and lower molds, and then the downward tightening force of the elastic handle is used to apply pressure to the upper mold, so that the upper mold and the lower mold can be better fitted and fixed, preparing for the next step of injection molding.

[0016] Optionally, an air cooling structure is provided at the top and bottom of the cooling box, and two transmission belts are installed in the cooling box. One of the transmission belts is rotationally matched with the right side of the cooling box, and the outer side of the other transmission belt is rotationally matched with a bracket. An electric guide rail is provided at the bottom of the cooling box, and the bracket slides in the electric guide rail.

[0017] By adopting the above technical solution, the air cooling structure is used to cool and shape the transmitted materials, and the bracket on the outside of the other transmission belt slides in the electric guide rail to change the distance between the two transmission belts, so as to better transmit and shape materials of different widths.

[0018] Optionally, the rear ends of the two transmission belts are in an inclined and raised state, cutting knives are fixed on the inner sides of the rear ends of the two transmission belts, the front ends of the two transmission belts are in a horizontal state, the middle parts of the front ends of the two transmission belts are rotatably matched with multiple transmission wheels, and a transmission rod is fixed to the axial part of the transmission wheel.

[0019] By adopting the above technical solution, the irregular edges on the opposite sides of the material can be cut off by the cutting knife, reducing the work of subsequent staff, and the transmission rod can be used to better transmit the material above.

[0020] Optionally, baffles are installed on the opposite inner sides of the two transmission belts, one of which is fixed to the right side of the inner wall of the cooling box, and the other baffle is slidably matched with the top of the inner wall of the cooling box.

[0021] By adopting the above technical solution, the baffles can be used to position and shape the relative sides of the material, thereby reducing the situation in which the material is offset and skewed at the front end during transportation, thereby affecting the cutting skew at the rear end.

[0022] Optionally, the traction assembly includes multiple rectangular frames fixed to the relatively inner side of the front end of the frame, a lower conveyor belt rotatably engaged between the lower parts of the multiple rectangular frames, a slider slidably engaged with the middle parts of the multiple rectangular frames, two screw rods respectively threadedly engaged with the middle parts of two sliders on the same side, and an upper conveyor belt rotatably engaged between the four sliders.

[0023] By adopting the above technical solution, the slider is driven up and down by the provided screw rod, thereby driving the upper conveyor belt to move closer to or away from the lower conveyor belt, changing the distance between the two, and realizing timely adjustment according to materials of different shapes and thicknesses, and effectively transmitting and pulling the materials for subsequent extrusion processing.

[0024] Optionally, a conveying roller is rotatably provided below the middle of the frame, and the conveying roller is located between the cooling box and the upper and lower molds.

[0025] By adopting the above technical solution, the materials injected by the upper and lower molds can be transferred to the cooling box by using the provided conveying rollers.

[0026] Optionally, a driving motor is fixed to the rear end of the frame, and two gears are fixed to the rear end of the conical twin-screw barrel, the two gears are meshed with each other, and the output end of the driving motor is fixed to the axial center of one of the gears.

[0027] By adopting the above technical solution, a driving motor is used to drive two gears to mesh, thereby driving the conical twin-screw barrel to mix and extrude the raw materials.

[0028] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described below at the same time:

[0029] By setting the clamping assembly between the frame and the upper and lower molds, the upper and lower molds can be quickly disassembled and assembled, and then molds of different specifications and shapes can be replaced, so that a variety of plastic finished products such as corrugated plates, flat plates, and round tubes can be made to expand the scope of use. Then, the main diversion port and three auxiliary diversion ports set at the discharge end of the conical twin-screw barrel can divert the injection liquid, so that the subsequent injection molding is more uniform, and the distance between the multiple first springs and the multiple fixed plates is changed by the set screw, so that the position of the fixed tube and the three movable tubes can be better adjusted according to the required injection width, thereby reducing the waste of raw materials. At the same time, the fixed tube and the three movable tubes extrude the injection liquid at the same time, which can speed up the working efficiency of the equipment and improve the yield rate.

[0030] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0032] In the figure:

[0033] Figure 1 It is a schematic diagram of the rack structure;

[0034] Figure 2 It is a schematic diagram of the structure of a conical twin-screw barrel;

[0035] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0036] Figure 4 It is a schematic diagram of the extruded plate structure;

[0037] Figure 5 It is a schematic diagram of the upper and lower mold structures;

[0038] Figure 6 It is a schematic diagram of the feed box structure;

[0039] Figure 7 Schematic diagram of circular groove structure.

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] Frame 1, conical twin-screw barrel 2, extrusion plate 3, cooling box 4, traction assembly 5, feed box 6, drive motor 7, gear 8, discharge port 9, main diversion port 10, auxiliary diversion port 11, fixed pipe 12, movable pipe 13, upper and lower molds 14, electric telescopic rod 15, hook 16, arc surface 17, first spring 18, circular groove 19, fixed plate 20, electric guide rail 21, second spring 22, screw 23, conveyor roller 24, transmission belt 25, transmission wheel 26, cutting knife 27, transmission rod 28, baffle 29, rectangular frame 30, screw 31, slider 32, lower conveyor belt 33, upper conveyor belt 34, elastic handle 35.

[0042] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] The present invention will now be described in further detail with reference to the accompanying drawings.

[0044] See also Figure 1-7 As shown, in this embodiment, a conical twin-screw extruder with an SKD sleeve is provided, including a frame 1, a conical twin-screw barrel 2 is fixed at the rear end above the frame 1, an extrusion plate 3 is fixed at the discharge end of the conical twin-screw barrel 2, upper and lower molds 14 are installed just below the extrusion plate 3, and clamping assemblies corresponding to the upper and lower molds 14 are installed in the middle of the opposite sides of the frame 1, a cooling box 4 located in front of the upper and lower molds 14 is fixed in the middle of the frame 1, and a traction assembly 5 located in front of the cooling box 4 is fixed at the front end of the frame 1;

[0045] A discharge port 9 corresponding to the discharge end of the conical twin-screw barrel 2, a main diversion port 10 and three secondary diversion ports 11 connected to the discharge port 9 are provided inside the extrusion plate 3. A fixed tube 12 is fixed around the main diversion port 10, and a movable tube 13 is slidably matched around the three secondary diversion ports 11. The lower ends of the fixed tube 12 and the three movable tubes 13 are sealed and connected to the feed ports of the upper and lower molds 14. Fixed plates 20 are fixed around the fixed tube 12 and the three movable tubes 13, and a first spring 18 is fixed between two adjacent fixed plates 20. A screw 23 is rotatably matched in the middle of the rightmost fixed plate 20, and the screw 23 is threadedly matched with the middle part of the leftmost fixed plate 20.

[0046] One aspect of the application of this embodiment is as follows: when the conical twin-screw extruder is used, the raw materials are first mixed and stirred in the conical twin-screw barrel 2 and then extruded from the extrusion plate 3. When passing through the extrusion plate 3, the liquid raw materials first flow through the discharge port 9 to the main branch port 10 and the three secondary branch ports 11, and then flow through the main branch port 10 and the three secondary branch ports 11 to the fixed pipe 12 and the three movable pipes 13 respectively, and enter the inner cavity of the upper and lower molds 14 for injection molding. Then, one end of the material after injection molding enters the cooling box 4 for cooling and shaping. After cooling and shaping, the material enters the traction component 5 and is transmitted and pulled toward the front end to provide a certain power for the rear injection molding.

[0047] When it is necessary to replace different upper and lower molds 14, the upper and lower molds 14 can be disassembled and assembled using the clamping assembly, and then when it is necessary to make materials of different widths, the screw 23 is rotated so that the screw 23 is threadedly matched with the leftmost fixed plate 20, and then the leftmost fixed plate 20 drives the multiple first springs 18 and the multiple fixed plates 20 in the middle to move closer to the rightmost fixed plate 20 synchronously, thereby shortening the distance between the fixed tube 12 and the three movable tubes 13 and reducing the injection area. It should be noted that all electrical equipment involved in this application can be powered by batteries or external power supplies.

[0048] like Figure 7 As shown, the upper and lower molds 14 of this embodiment include an upper mold and a lower mold, and the inner cavity of the upper mold and the lower mold can be a wave-shaped structure, a flat plate structure, or a cylindrical structure. The upper mold and the lower mold with different shapes of inner cavity can be installed and used as needed, so that a variety of plastic structures such as wave plates, flat plates, and round tubes can be made.

[0049] like Figure 5As shown, the middle of the upper mold of this embodiment is provided with a liquid injection port corresponding to the fixed tube 12 and the three movable tubes 13, and sealing strips are fixed to the inner wall of the liquid injection port and the peripheral sides of the fixed tube 12 and the three movable tubes 13, and the middle of the opposite sides of the upper mold and the lower mold are provided with circular grooves 19 corresponding to the clamping assembly. The fixed tube 12, the three movable tubes 13 are aligned and connected with the four liquid injection ports opened in the middle of the upper mold, and the connection is sealed with a sealing strip to ensure the stable flow of the injection liquid.

[0050] like Figure 2-3 As shown, the clamping assembly of this embodiment includes an electric telescopic rod 15 fixed to the lower side of the middle part of the frame 1, two hooks 16 rotatably matched with the lower end of the electric telescopic rod 15, and a second spring 22 fixed between the two hooks 16, and the lower ends of the two hooks 16 are arc-shaped surfaces 17, and the two hooks 16 correspond to the circular grooves 19. The middle parts of the opposite sides of the frame 1 are equipped with elastic handles 35 corresponding to the upper mold.

[0051] When the upper mold and the lower mold need to be installed, first align the arcuate surfaces 17 of the two hooks 16 with the circular grooves 19 and squeeze them downward so that the two hooks 16 slide into the circular grooves 19, and then the lower ends of the two hooks 16 are located on the lower side of the lower mold to fit it. At this time, the elastic rebound force of the second spring 22 drives the two hooks 16 to move relatively away from each other, so as to better form a snap-fit ​​relationship with the circular grooves 19, and then start the electric telescopic rod 15 to lift upward so that the four injection ports opened in the middle of the upper mold are aligned and connected with the fixed tube 12 and the three movable tubes 13, and finally turn the tension handle 35. The tension handle 35 can apply pressure downward to the upper mold, so that the connection between the upper mold and the lower mold is tightened, and the reverse operation can be performed when disassembling.

[0052] like Figure 5 As shown, the cooling box 4 of this embodiment is provided with air cooling structures at the top and bottom, and two transmission belts 25 are installed in the cooling box 4, one of which is rotationally matched with the right side of the cooling box 4, and the outer side of the other transmission belt 25 is rotationally matched with a bracket, and the bottom of the cooling box 4 is provided with an electric guide rail 21, and the bracket is slidably matched in the electric guide rail 21. When the material after injection molding enters the cooling box 4, the cooling box 4 will be adjusted in time according to the width of the material, and the electric guide rail 21 will be started. The output end of the electric guide rail 21 drives the bracket to slide, so that the bracket drives the transmission belt 25 on the left to move closer to the transmission belt 25 on the right, so as to better cool, position, transmit and shape the material.

[0053] like Figure 5As shown, the rear ends of the two transmission belts 25 of this embodiment are tilted and lifted, and cutting knives 27 are fixed to the inner sides of the rear ends of the two transmission belts 25. The front ends of the two transmission belts 25 are horizontal, and the middle parts of the front ends of the two transmission belts 25 are rotatably matched with a plurality of transmission wheels 26, and a transmission rod 28 is fixed to the axis of the transmission wheel 26. When the material enters the cooling box 4, the air cooling structure is turned on to cool and shape the material, and then the cutting knives 27 cut the irregular edges of the opposite sides of the material, and the cut material is continuously transmitted forward through the transmission rod 28.

[0054] like Figure 5 As shown, baffles 29 are installed on the opposite inner sides of the two transmission belts 25 of this embodiment, one of which is fixed to the right side of the inner wall of the cooling box 4, and the other is slidably matched with the top of the inner wall of the cooling box 4. The baffle 29 is flush with the cutting blade 27, and when the cutting blade 27 cuts and corrects the edge of the material, it continues to be transmitted forward against the baffle 29, thereby ensuring the regularity of the material during transmission.

[0055] like Figure 5 As shown, the traction assembly 5 of this embodiment includes a plurality of rectangular frames 30 fixed to the inner side of the front end of the frame 1, a lower conveyor belt 33 rotatably matched between the lower parts of the plurality of rectangular frames 30, a slider 32 slidably matched with the middle parts of the plurality of rectangular frames 30, two screw rods 31 respectively threadedly matched with the middle parts of two sliders 32 on the same side, and an upper conveyor belt 34 rotatably matched between the four sliders 32. First, the spacing between the lower conveyor belt 33 and the upper conveyor belt 34 is changed according to the shape of the material to be transmitted, and the screw rod 31 is rotated so that the screw rod 31 and the slider 32 are threadedly matched to drive the upper conveyor belt 34 to move toward or away from the lower conveyor belt 33. After the spacing between the lower conveyor belt 33 and the upper conveyor belt 34 is adjusted, the corrected material enters between the lower conveyor belt 33 and the upper conveyor belt 34, and then the lower conveyor belt 33 and the upper conveyor belt 34 transmit and pull the material forward.

[0056] like Figure 5 As shown, the lower part of the middle of the frame 1 of this embodiment is rotatably matched with a conveying roller 24, and the conveying roller 24 is located between the cooling box 4 and the upper and lower molds 14. When the materials after the upper and lower molds 14 are injected, they are transported to the inside of the cooling box 4 through the conveying roller 24.

[0057] like Figure 1 As shown, a driving motor 7 is fixed to the rear end of the frame 1 of this embodiment, and two gears 8 are fixed to the rear end of the conical twin-screw barrel 2. The two gears 8 are meshed with each other, and the output end of the driving motor 7 is fixed to the axial center of one of the gears 8. The driving motor 7 is started so that the output end of the driving motor 7 drives the two gears 8 to mesh with each other, and then the two gears 8 drive the conical twin-screw barrel 2 to rotate.

[0058] Specifically, the screw 23, lead screw 31, transmission belt 25, conveyor roller 24, lower conveyor belt 33, and upper conveyor belt 34 in the present application can all be connected to an external power supply or driven by a motor. The air-cooling structure in the present application has the same working principle and operation method as the "air-conditioning fan" refrigeration structure in the prior art.

[0059] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the enlightenment of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. The technology, shape, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A conical twin-screw extruder with SKD sleeve, characterized in that: include: A frame (1), a conical twin-screw barrel (2) is fixed at the rear end above the frame (1), an extrusion plate (3) is fixed at the discharge end of the conical twin-screw barrel (2), upper and lower molds (14) are installed directly below the extrusion plate (3), a clamping assembly corresponding to the upper and lower molds (14) is installed in the middle of the two opposite sides of the frame (1), a cooling box (4) located in front of the upper and lower molds (14) is fixed in the middle of the frame (1), and a traction assembly (5) located in front of the cooling box (4) is fixed at the front end of the frame (1); The extrusion plate (3) is provided with a discharge port (9) corresponding to the discharge end of the conical twin-screw barrel (2), a main flow-dividing port (10) and three auxiliary flow-dividing ports (11) connected to the discharge port (9); a fixed tube (12) is fixed around the main flow-dividing port (10); a movable tube (13) is slidably matched around the three auxiliary flow-dividing ports (11); the lower ends of the fixed tube (12) and the three movable tubes (13) are sealedly connected to the feed ports of the upper and lower molds (14); fixed plates (20) are fixed around the fixed tube (12) and the three movable tubes (13); a first spring (18) is fixed between two adjacent fixed plates (20); a screw rod (23) is rotatably matched in the middle of the rightmost fixed plate (20), and the screw rod (23) is threadably matched with the middle of the leftmost fixed plate (20).

2. A conical twin-screw extruder with SKD sleeve according to claim 1, characterized in that: The upper and lower molds (14) include an upper mold and a lower mold. The inner cavities of the upper mold and the lower mold can be wavy structures, flat structures, or cylindrical structures.

3. A conical twin-screw extruder with SKD sleeve according to claim 2, characterized in that: A liquid injection port corresponding to the fixed tube (12) and the three movable tubes (13) is provided in the middle of the upper mold, and sealing strips are fixed to the inner wall of the liquid injection port and the peripheral sides of the fixed tube (12) and the three movable tubes (13). Circular grooves (19) corresponding to the clamping assembly are provided in the middle of the two opposite sides of the upper mold and the lower mold.

4. A conical twin-screw extruder with SKD sleeve according to claim 3, characterized in that: The clamping assembly comprises an electric telescopic rod (15) fixed to the lower side of the middle of the frame (1), two hooks (16) rotatably matched with the lower end of the electric telescopic rod (15), and a second spring (22) fixed between the two hooks (16), wherein the lower ends of the two hooks (16) are arc-shaped surfaces (17), the two hooks (16) correspond to the circular grooves (19), and the middle parts of the opposite sides of the frame (1) are provided with elastic handles (35) corresponding to the upper mold.

5. The conical twin-screw extruder with SKD sleeve according to claim 1, characterized in that: The top and bottom of the cooling box (4) are both provided with air cooling structures. Two transmission belts (25) are installed in the cooling box (4). One transmission belt (25) is rotationally matched with the right side of the cooling box (4). The outer side of the other transmission belt (25) is rotationally matched with a bracket. The bottom of the cooling box (4) is provided with an electric guide rail (21), and the bracket is slidably matched in the electric guide rail (21).

6. The conical twin-screw extruder with SKD sleeve according to claim 5, characterized in that: The rear ends of the two transmission belts (25) are in an inclined and raised state, a cutting knife (27) is fixed on the inner side of the rear ends of the two transmission belts (25), the front ends of the two transmission belts (25) are in a horizontal state, the middle parts of the front ends of the two transmission belts (25) are rotatably matched with a plurality of transmission wheels (26), and a transmission rod (28) is fixed on the axial center of the transmission wheel (26).

7. A conical twin-screw extruder with SKD sleeve according to claim 6, characterized in that: Baffles (29) are installed on the opposite inner sides of the two driving belts (25), one of the baffles (29) is fixed to the right side of the inner wall of the cooling box (4), and the other baffle (29) is slidably matched with the top of the inner wall of the cooling box (4).

8. The conical twin-screw extruder with SKD sleeve according to claim 1, characterized in that: The traction assembly (5) comprises a plurality of rectangular frames (30) fixed to the inner side of the front end of the frame (1), a lower conveyor belt (33) rotatably engaged between the lower parts of the plurality of rectangular frames (30), a slider (32) slidably engaged with the middle parts of the plurality of rectangular frames (30), two screw rods (31) respectively threadedly engaged with the middle parts of two sliders (32) on the same side, and an upper conveyor belt (34) rotatably engaged between the four sliders (32).

9. The conical twin-screw extruder with SKD sleeve according to claim 1, characterized in that: A conveying roller (24) is rotatably provided below the middle of the frame (1), and the conveying roller (24) is located between the cooling box (4) and the upper and lower molds (14).

10. The conical twin-screw extruder with SKD sleeve according to claim 1, characterized in that: A driving motor (7) is fixed at the rear end of the frame (1), and two gears (8) are fixed at the rear end of the conical twin-screw barrel (2). The two gears (8) are meshed with each other, and the output end of the driving motor (7) is fixed to the axial center of one of the gears (8).

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