Sheet extruder with adjustable thickness

Abstract

The invention discloses a thickness-adjustable sheet extruder, and relates to the technical field of sheet extrusion appliances, the thickness-adjustable sheet extruder comprises a bottom plate and a vertical frame arranged on the top surface of the bottom plate, the two side surfaces of the vertical frame are provided with upper frame plates, the top of an electric heating mixing tank is provided with a feeding hopper, and rolling mechanisms are arranged between sliding grooves; the top of each fixing plate is provided with a material guiding base, and a conveyor is arranged in the mounting groove. A cooling mechanism is arranged in the material guide seat; the bottom of the electric heating mixing tank is communicated with a distributing hopper; through cooperation of the material distributing hopper, the material spreading box and a plurality of groups of rolling mechanisms, materials in the electric heating material mixing tank can be conveniently and synchronously subjected to rolling extrusion molding operation of two sheets, and the high efficiency and the yield of the sheets during production and processing are effectively improved; meanwhile, the rolled sheet can be conveniently subjected to primary extrusion molding rolling and further rolling extrusion molding thinning; and through two times of rolling extrusion molding operations with different thicknesses, the situation that the edges of the sheets are irregularly deformed due to the fact that the sheets are extruded in place at a time is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of sheet extrusion equipment technology, and more particularly to a sheet extruder with adjustable thickness. Background Technology

[0002] Plastic sheets are widely used in people's lives. In the production process of plastic sheets, an extruder is used to fully mix the plastic materials and then extrude them into shape. Chinese patent application publication number CN210336975U discloses an adjustable-thickness plastic sheet extruder, specifically relating to the field of plastic processing technology. The extrusion barrel includes an extrusion hopper with a feed inlet on one side of its top and a discharge outlet at its bottom. An auger is installed inside the extrusion barrel. A first motor is fixedly mounted on the top of the extrusion barrel, and the output shaft of the first motor passes through the top of the extrusion barrel and is fixedly sleeved to the top of the auger. A connecting sleeve is fixedly sleeved on the outside of the extrusion barrel. A support frame is welded to the end of the connecting sleeve away from the extrusion barrel, and a sheet-pressing adjustment mechanism is provided on the side of the support frame closest to the extrusion barrel. This patent achieves thickness control during plastic compression molding by setting movable frames at both ends of the moving pressure roller and sliding the sliders on the movable frames with grooves opened inside the pressure roller frame to control the distance between the moving pressure roller and the fixed pressure roller. However, in actual use, the aforementioned comparative documents show that although the upper and lower sets of rollers achieve the function of spacing adjustment, the moving rollers in the two sets of rollers are adjusted synchronously. This adjustment method results in the rollers pressing the sheet at the same distance after adjustment. This structure cannot perform preliminary extrusion rolling and further thinning distribution rolling extrusion on the sheet. If the rollers are directly adjusted to the required sheet thickness, the one-time rolling extrusion operation is prone to irregular deformation of the sheet edge, which will affect the forming quality of the sheet after rolling extrusion and is not convenient for the initial shaping operation of the material before rolling extrusion. Therefore, the above technical problems need to be improved. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a sheet extruder with adjustable thickness.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sheet extruder with adjustable thickness, comprising a base plate housing a vertical frame disposed in the middle of the top surface of the base plate, upper frame plates horizontally mounted on the lower part of both sides of the vertical frame, a lower frame plate mounted on the vertical frame below the upper frame plates, a protective sleeve installed inside the upper part of the vertical frame, an electrically heated mixing tank installed in the inner ring of the protective sleeve, a plurality of discharge ports equally spaced on the top periphery of the electrically heated mixing tank, a feeding hopper cooperating with the discharge ports mounted on the top of the electrically heated mixing tank, a servo motor vertically mounted in the middle of the top surface of the electrically heated mixing tank, and a protective shell covering the servo motor; the front and rear ends of the upper frame plate and the lower frame plate... Sliding grooves are provided on the inner walls of the upper frame plate and the lower frame plate, respectively, for rolling mechanisms to process sheet materials. A fixed plate is horizontally installed on the top of each base plate. A guide seat for reversing the falling sheet material is installed at the inner top of each fixed plate. An installation groove is provided on the outer top of the fixed plate, and a conveyor for sheet material output is installed inside the installation groove. A cooling mechanism for shaping the sheet material during reversal is provided inside the guide seat. Distribution hoppers are connected to both sides of the bottom of the electric heating mixing tank, with the bottom of the distribution hoppers tilted outwards. A longitudinal beam is fixed in the middle of the vertical frame, and a striking component for smooth material flow from the distribution hopper is provided in the middle of the top surface of the longitudinal beam.

[0005] Preferably, a spreading box is installed on both sides of the longitudinal beam, and a discharge flat pipe is installed longitudinally at the bottom opening of the spreading box, and the bottom outlet of the discharge flat pipe is a longitudinally placed discharge flat opening; the bottom end of the distributing hopper is fixedly connected to the top opening of the spreading box, and the interior of the spreading box is a rectangular funnel-shaped groove structure.

[0006] Preferably, the rolling mechanism includes a fixed seat fixedly installed at the inner end of the sliding groove, an inner pressure roller rotatably disposed between two fixed seats, a movable frame slidably disposed between two sliding grooves, and an outer pressure roller rotatably disposed inside the movable frame. A lead screw is rotatably disposed inside the sliding grooves at the rear ends of both the upper and lower frame plates. A micro motor for driving the lead screw is rotatably installed in the fixed seat inside the sliding grooves at the rear ends of both the upper and lower frame plates. The front and rear ends of the movable frame extend movably into the sliding grooves. A guide rod is rotatably fixed inside the sliding grooves at the rear ends of the upper and lower frame plates. The front frame of the movable frame located in the front sliding groove has a guide hole rotatably opened to cooperate with the guide rod. The rear frame of the movable frame located in the rear sliding groove has a threaded hole rotatably opened to cooperate with the lead screw.

[0007] Preferably, the outer wall of the inner end of the discharge flat tube is located above the inner pressure roller and the outer pressure roller; the bottom outer end of the movable frame in the upper frame plate is vertically fixed with a baffle, and the bottom end of the baffle is in contact with the top surface of the movable frame inside the lower frame plate; the front end of the movable frame is provided with a motor for driving the outer pressure roller, and the outer end face of the movable frame is provided with a horizontally penetrating air pipe.

[0008] Preferably, the inner top surface of the electric heating mixing tank is provided with a spiral stirring shaft for mixing materials inside the tank, and the bottom end of the spiral stirring shaft is vertically fixed with a spline sleeve that cooperates with the hammering component.

[0009] Preferably, the striking assembly includes a vertically rotatable shaft located at the center of the top surface of the longitudinal beam, a mounting sleeve fixedly fitted to the lower part of the shaft, and multiple deflection seats equidistantly hinged to the outer periphery of the mounting sleeve. A horizontally placed fixing rod is provided in the groove of the deflection seat, and a pull rope is fixed on the fixing rod. A hemispherical impact block is installed at the bottom of the hanging end of the pull rope. The top end of the shaft extends into the interior of the electric heating mixing tank in a sealed manner and is vertically fixed to a spline shaft. The spline sleeve at the bottom end of the spiral stirring shaft is fitted onto the outside of the spline shaft.

[0010] Preferably, the outer side of the guide seat is an arc-shaped slope, and multiple air holes are evenly opened on the arc-shaped slope of the outer side of the guide seat for sheet feeding. A diversion cavity is opened in the lower part of the guide seat, and the inner end of each air hole is connected to the diversion cavity.

[0011] Preferably, the cooling mechanism includes a cold air fan located at the bottom of the distribution chamber, a ventilation ring plate installed inside multiple air holes, and a sliding ball bearing embedded in the inner ring of the ventilation ring plate. The air inlet end of the cold air fan is equipped with an air inlet pipe, and the outer end of the air inlet pipe extends out of the guide seat. A dustproof net is provided inside the outer end of the air inlet pipe.

[0012] Preferably, the outer surface of the ventilation ring plate has multiple arc-shaped exhaust ports equidistantly spaced; the inner surface of the ventilation ring plate is equipped with a cleaning block for wiping with a ball bearing.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention, through the cooperation of the material distribution hopper, the spreading box, and multiple sets of rolling mechanisms, facilitates the simultaneous rolling and extrusion of two sheets of material inside the electric heating mixing tank, effectively improving the efficiency and output of sheet production and processing; it also facilitates the initial extrusion and further rolling and thinning of the rolled sheet; and through two rolling and extrusion operations of different thicknesses, it effectively avoids the irregular deformation of the sheet edges caused by extruding the sheet in one go; through the cooperation of the spreading box and the discharge flat tube, the material is facilitated to flow towards the discharge port at the bottom of the spreading box, and under the action of the fluid's own weight, it can evenly fill the internal space of the discharge flat tube, thus facilitating the initial shaping of the material as it falls from the discharge flat tube, forming a sheet shape when discharged through the discharge flat tube, and improving the integrity and continuity of the subsequent material falling, effectively improving the efficiency of sheet rolling and extrusion processing. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the present invention after the feeding hopper has been removed; Figure 4 This is a partial schematic diagram of the upper and lower frame plates of the present invention; Figure 5 This is a schematic diagram of the material distribution hopper and its three-dimensional structure according to the present invention; Figure 6 This is a three-dimensional structural diagram of the connection state between the longitudinal beam and the rotating shaft of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the lead screw and moving frame of the present invention; Figure 8 This is a perspective view of the fixing plate, guide seat, and conveyor structure of the present invention; Figure 9 This is a front structural cross-sectional view of the fixing plate and guide seat of the present invention; Figure 10 This is a schematic diagram showing the connection state between the rotating shaft, the spiral stirring shaft, and the spline sleeve of the present invention; Figure 11 This is a schematic diagram of the splined shaft, deflector seat, and draw rope structure of the present invention; Figure 12 This is a perspective view of the ventilation ring plate and lubrication ball structure of the present invention; Figure 13 This is a cross-sectional schematic diagram of the ventilation ring plate and cleaning block structure of the present invention.

[0015] The components in the diagram are numbered as follows: 1. Base plate; 2. Vertical frame; 3. Upper frame plate; 4. Lower frame plate; 5. Sheath; 6. Electric heating mixing tank; 7. Feeding hopper; 8. Servo motor; 9. Distributing hopper; 10. Longitudinal beam; 11. Spreading box; 12. Inner pressure roller; 13. Moving frame; 14. Outer pressure roller; 15. Lead screw; 16. Fixed plate; 17. Guide seat; 18. Conveyor; 19. Discharge flat pipe; 20. Rotating shaft; 21. Splined shaft; 22. Deflection seat; 23. Pull rope; 24. Impact block; 25. Guide rod; 26. Ventilation ring plate; 27. Slip-aiding ball bearings; 28. Cooling fan; 29. ​​Spiral mixing shaft; 30. Splined sleeve. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] Example: See Figures 1 to 13 An adjustable-thickness sheet extruder includes a base plate 1 and a vertical frame 2 located in the center of the top surface of the base plate 1. Upper frame plates 3 are horizontally mounted on the lower parts of both sides of the vertical frame 2. A lower frame plate 4 is mounted on the vertical frame 2 below the upper frame plate 3. A protective sleeve 5 is installed inside the upper part of the vertical frame 2. An electrically heated mixing tank 6 is installed in the inner ring of the protective sleeve 5. Multiple discharge ports are equidistantly opened on the top periphery of the electrically heated mixing tank 6. A feeding hopper 7 that mates with the discharge ports is installed on the top of the electrically heated mixing tank 6. A servo motor 8 is vertically mounted in the center of the top surface of the electrically heated mixing tank 6. The servo motor 8 is covered by a... Protective shell; sliding grooves are provided on the inner walls of the front and rear ends of the upper frame plate 3 and the lower frame plate 4, and rolling mechanisms for sheet processing are installed between the sliding grooves of the upper frame plate 3 and the lower frame plate 4; a fixing plate 16 is horizontally installed on the top of the bottom plate 1, and a guide seat 17 for sheet reversing is installed on the inner top end of each fixing plate 16; an installation groove is provided on the outer top of the fixing plate 16, and a conveyor 18 for sheet output is installed inside the installation groove; a cooling mechanism for shaping the sheet during reversing is provided inside the guide seat 17; electric heating mixing Both sides of the bottom of the material tank 6 are connected to a distribution hopper 9, the bottom of the distribution hopper 9 is inclined outward, and an electronic valve is installed at the discharge port at the bottom of the distribution hopper 9; a longitudinal beam 10 is fixed in the middle of the vertical frame 2, and a striking component for smooth material flow from the distribution hopper 9 is provided in the middle of the top surface of the longitudinal beam 10; a spreading box 11 is installed on both sides of the longitudinal beam 10, and a discharge flat pipe 19 is installed longitudinally at the bottom opening of the spreading box 11, and the bottom outlet of the discharge flat pipe 19 is a longitudinally placed discharge flat opening; the bottom of the distribution hopper 9 is fixedly connected to the top opening of the spreading box 11. Furthermore, the interior of the spreading box 11 has a rectangular funnel-shaped slot structure. Through the cooperation of the distributing hopper 9, the spreading box 11, and multiple sets of rolling mechanisms, the material inside the electric heating mixing tank 6 can be simultaneously subjected to two sheet extrusion operations, effectively improving the efficiency and output of sheet production. At the same time, it facilitates the initial extrusion and further thinning of the sheet being rolled. Thus, through two roll extrusion operations of different thicknesses, it effectively avoids the irregular deformation of the sheet edges caused by extruding the sheet in one go.

[0018] In this invention, the rolling mechanism includes a fixed seat fixedly installed at the inner end of the sliding groove, an inner pressure roller 12 rotatably disposed between two fixed seats, a movable frame 13 slidably disposed between two sliding grooves, and an outer pressure roller 14 rotatably disposed inside the movable frame 13. A lead screw 15 is rotatably disposed inside the sliding grooves at the rear ends of both the upper frame plate 3 and the lower frame plate 4. A micro motor for driving the lead screw 15 is rotatably installed in the fixed seat inside the sliding grooves at the rear ends of both the upper frame plate 3 and the lower frame plate 4. The front and rear ends of the movable frame 13 extend movably into the sliding grooves. Guide rods 25 are horizontally fixed inside the sliding grooves at the rear ends of the upper frame plate 3 and the lower frame plate 4. The front frame of the moving frame 13 located in the front sliding groove has a guide hole that cooperates with the guide rod 25. The rear frame of the moving frame 13 located in the rear sliding groove has a threaded hole that cooperates with the lead screw 15. The rolling mechanism facilitates the effective multiple rolling processing of the sheet. By facilitating the rolling extrusion of the sheet to different thicknesses, it effectively avoids the irregular deformation of the sheet edge caused by extruding the sheet to the required thickness in one go.

[0019] In this invention, the outer wall of the inner end of the discharge flat tube 19 is located above the inner pressure roller 12 and the outer pressure roller 14; the bottom outer end of the movable frame 13 in the upper frame plate 3 is vertically fixed with a baffle, and the bottom end of the baffle is in contact with the top surface of the movable frame 13 inside the lower frame plate 4; the front end of the movable frame 13 is provided with a motor for driving the outer pressure roller 14; the outer end face of the movable frame 13 is provided with a horizontally penetrating air pipe; through the cooperation of the spreading box 11 and the discharge flat tube 19, the material is facilitated to flow towards the bottom discharge port of the spreading box 11, and under the action of the fluid's own weight, it can evenly fill the internal space of the discharge flat tube 19, so that when the material falls out of the discharge flat tube 19, it can play a preliminary shaping role, so that the material can form a sheet when it is discharged through the discharge flat tube 19, and improve the integrity and continuity of the subsequent material when falling, effectively improving the efficiency of sheet extrusion processing.

[0020] In this invention, a spiral stirring shaft 29 for mixing materials inside the tank is vertically rotatably mounted on the inner top surface of the electric heating mixing tank 6. A spline sleeve 30 cooperating with a striking assembly is vertically fixed to the bottom end of the spiral stirring shaft 29. The striking assembly includes a rotating shaft 20 vertically rotatably mounted in the middle of the top surface of the longitudinal beam 10, a mounting sleeve fixedly fitted to the lower part of the rotating shaft 20, and multiple deflection seats 22 equidistantly hinged to the outer periphery of the mounting sleeve. A horizontally positioned fixing rod is provided in the slot of the deflection seat 22, and a pull rope 23 is fixed to the fixing rod. A hemispherical impact block 24 is installed at the bottom of the hanging end of the pull rope 23. The top sealing of the 20 extends into the interior of the electric heating mixing tank 6 and is vertically fixed to the spline shaft 21; the spline sleeve 30 at the bottom of the spiral stirring shaft 29 is sleeved on the outside of the spline shaft 21; the rotation of the rotating shaft 20 facilitates the rotation of multiple deflection seats 22, which in turn causes the deflection seats 22 to swing the pull rope 23 and the impact block 24 in a circular motion under the action of centrifugal force. The rotating impact block 24 facilitates repeated tapping of the distribution hopper 9, thereby improving the smoothness of the material discharge in the distribution hopper 9 and preventing the material from stagnating inside the distribution hopper 9.

[0021] In this invention, the outer surface of the guide seat 17 is an arc-shaped slope, and multiple air holes are evenly provided on the arc-shaped slope of the outer side of the guide seat 17 for sheet material feeding. A flow distribution cavity is provided in the lower part of the guide seat 17, and the inner end of each air hole is connected to the flow distribution cavity. The cooling mechanism includes a cooler 28 located at the bottom of the flow distribution cavity, a ventilation ring plate 26 installed inside the multiple air holes, and a lubrication ball 27 rolled and embedded in the inner ring of the ventilation ring plate 26. An air inlet pipe is installed at the air inlet end of the cooler 28, and the outer end of the air inlet pipe extends out of the guide seat 17. A dustproof net is provided inside the outer end of the air inlet pipe. The outer surface of the ventilation ring plate 26 is circumferentially... Multiple arc-shaped exhaust vents are equidistantly arranged; a cleaning block for wiping the lubricating ball 27 is installed on the inner side of the ventilation ring plate 26. A slag discharge port is opened in the middle of the bottom surface of the cleaning block. The cleaning block can automatically wipe and clean the surface of the lubricating ball 27 when it rotates; by starting the cold air fan 28, cold air is supplied to the inside of the distribution cavity. At this time, the cold air inside the distribution cavity will enter the densely distributed air blowing holes. Then, the cold air entering the air blowing holes can be blown out through the arc-shaped exhaust vents on the ventilation ring plate 26. The cold air blown out through the arc-shaped exhaust vents can perform preliminary cooling and forming of the sheet falling onto the guide seat 17.

[0022] Working principle: In this embodiment, the present invention also proposes a method for using a sheet extruder with adjustable thickness, including the following steps: Step 1: First, connect the electric heating mixing tank 6, servo motor 8, electronic valves at the bottom of the dispensing hopper 9, cooler 28, motor, and micro motor to the external control equipment via wires. Then, connect the outer end of the air blowing pipe at the outer end of the moving frame 13 to the external hot air equipment via a hose. The cooperation between the external hot air equipment and the air blowing pipe facilitates the surface heating of the external pressure roller 14 installed in the moving frame 13, while preventing impurities from adhering to the surface of the external pressure roller 14. Then, add the mixed material into the electric heating mixing tank 6 through the feeding hopper 7 to perform a secondary heating and conveying operation before extrusion. After the material is added into the electric heating mixing tank 6, start the servo motor 8 to drive the spiral stirring shaft 29 to rotate. The rotation of the spiral stirring shaft 29 can achieve a uniform stirring and heating effect on the material inside the tank. Step 2: While stirring the material inside the electric heating mixing tank 6, first start the micro motor in the fixed seat at the rear end of the upper frame plate 3 to drive the lead screw 15 to rotate. By rotating the lead screw 15 inside the upper frame plate 3, it is convenient to move the movable frame 13 with the outer pressure roller 14 inside the upper frame plate 3 left and right. This facilitates the adjustment of the distance between the outer pressure roller 14 and the inner pressure roller 12 installed inside the upper frame plate 3. By adjusting the distance between the outer pressure roller 14 and the inner pressure roller 12 in the upper frame plate 3, it is convenient to initially compress the material falling from the discharge flat tube 19 into sheets. Step 3: Next, start the micro motor in the fixed seat at the rear end of the lower frame plate 4 to drive the lead screw 15 to rotate. The rotation of the lead screw 15 inside the lower frame plate 4 facilitates the left and right movement adjustment of the movable frame 13 with the outer pressure roller 14 inside the lower frame plate 4. This facilitates the adjustment of the distance between the outer pressure roller 14 and the inner pressure roller 12 installed inside the lower frame plate 4. By adjusting the distance between the outer pressure roller 14 and the inner pressure roller 12 in the lower frame plate 4, and making the distance between the outer pressure roller 14 and the inner pressure roller 12 in the lower frame plate 4 smaller, it is possible to further extrude and shape the sheet material that has been initially rolled from inside the upper frame plate 3, making it easier to process sheets of different thicknesses according to requirements. Step 4: After the material inside the electric heating mixing tank 6 is stirred and the extrusion spacing inside the two sets of upper frame plates 3 and lower frame plates 4 is adjusted, the material inside the electric heating mixing tank 6 will enter the respective connected spreading boxes 11 through the two distributing hoppers 9. After the material enters the spreading box 11, since the groove inside the spreading box 11 is rectangular funnel-shaped, it is easy for the material to flow towards the bottom outlet of the spreading box 11. Under the action of the fluid's own weight, it can evenly fill the discharge flat tube 19 installed at the bottom of the spreading box 11. When the material falls out from the discharge flat tube 19, it can play a preliminary shaping role, so that the material can form a plate shape when it is discharged from the discharge flat tube 19, and improve the integrity and continuity of the subsequent material when falling. At the same time, it is easy for the falling material to enter between the inner pressure roller 12 and the outer pressure roller 14 of the upper frame plate 3. Step 5: Before the sheet material enters between the inner pressure roller 12 and the outer pressure roller 14 of the upper frame plate 3, the motor installed inside the front end of the upper frame plate 3 is started to drive the outer pressure roller 14 to rotate counterclockwise, thereby performing a preliminary extrusion and shaping operation on the sheet material passing between the inner pressure roller 12 and the outer pressure roller 14 of the upper frame plate 3. When the sheet material that has undergone preliminary extrusion passes through the inner pressure roller 12 and the outer pressure roller 14 of the upper frame plate 3, the motor installed inside the front end of the lower frame plate 4 is started at the same time to drive the outer pressure roller 14 to rotate counterclockwise, so that the sheet material that has undergone preliminary extrusion can be further rolled and extruded to thin it when it passes through the lower frame plate 4. Through two roll extrusion operations of different thicknesses, the irregular deformation of the sheet edge caused by extruding the sheet material in one go is effectively avoided. Step six: When the spiral stirring shaft 29 rotates, it will drive the splined shaft 21 connected to it to rotate through the splined sleeve 30. In turn, the rotating splined shaft 21 will drive the rotating shaft 20 to rotate. The rotation of the rotating shaft 20 will facilitate the circular motion of multiple deflection seats 22. Under the action of centrifugal force, the deflection seats 22 will cause the pull rope 23 and the impact block 24 to be thrown up and then move in a circular motion. The rotating impact block 24 will facilitate the repeated tapping operation of the distribution hopper 9, thereby improving the smoothness of the material discharge in the distribution hopper 9 and preventing the material from being stuck inside the distribution hopper 9. Step 7: During the roller extrusion and thinning operation of the material inside the upper frame plate 3 and lower frame plate 4, the external hot air equipment and blower pipes can heat the outer walls of multiple outer pressure rollers 14, improving the material stretching effect during roller extrusion and preventing uneven extrusion due to cooling of the material surface. After multiple roller extrusions, the bottom end of the sheet will abut against the arc-shaped slope of the guide seat 17. Before the bottom end of the sheet falls onto the arc-shaped slope of the guide seat 17, the cold air fan 28 is started towards the inside of the distribution chamber. Cold air is supplied, and the cold air inside the distribution cavity enters the densely packed air blowing holes. The cold air entering the air blowing holes can then be blown out through the arc-shaped exhaust port on the ventilation ring plate 26. The cold air blown out through the arc-shaped exhaust port can perform preliminary cooling and shaping on the sheet falling onto the guide seat 17. Then, the falling sheet moves towards the conveyor 18 through the arc-shaped slope of the guide seat 17, and the smoothness of the sheet passing through the guide seat 17 is improved by the action of the sliding ball 27. Finally, the processed sheet is conveyed through the conveyor 18.

[0023] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sheet extruder with adjustable thickness, comprising a base plate (1) and a vertical frame (2) disposed in the middle of the top surface of the base plate (1), characterized in that: The lower part of the two sides of the upright frame (2) is horizontally equipped with an upper frame plate (3), and the lower frame plate (4) is installed on the upright frame (2) below the upper frame plate (3). The upper part of the upright frame (2) is equipped with a protective sleeve (5). The inner ring of the protective sleeve (5) is equipped with an electric heating mixing tank (6). The top surface of the electric heating mixing tank (6) is provided with multiple discharge ports at equal intervals. The top of the electric heating mixing tank (6) is equipped with a feeding hopper (7) that cooperates with the discharge ports. The top surface of the electric heating mixing tank (6) is vertically equipped with a servo motor (8). The servo motor (8) is covered with a protective shell. Sliding grooves are provided on the inner walls of the front and rear ends of the upper frame plate (3) and the lower frame plate (4). Rolling mechanisms for sheet processing are installed between the sliding grooves of the upper frame plate (3) and the sliding grooves of the lower frame plate (4). Fixed plates (16) are horizontally installed on the top of the bottom plate (1). A guide seat (17) for changing the direction of sheet falling is installed on the inner end of the top of each fixed plate (16). An installation groove is provided on the outer side of the top of the fixed plate (16). A conveyor (18) for sheet output is installed inside the installation groove. A cooling mechanism for shaping the sheet is provided inside the guide seat (17). A material distribution hopper (9) is connected to both sides of the bottom of the electric heating mixing tank (6). The bottom end of the material distribution hopper (9) is inclined outward. A longitudinal beam (10) is fixed in the middle of the vertical frame (2). A knocking component for the smooth falling of material inside the material distribution hopper (9) is provided in the middle of the top surface of the longitudinal beam (10).

2. The sheet extruder with adjustable thickness according to claim 1, characterized in that: Both sides of the longitudinal beam (10) are equipped with a material spreading box (11). A discharge flat tube (19) is installed longitudinally at the bottom opening of the material spreading box (11), and the bottom outlet of the discharge flat tube (19) is a longitudinally placed discharge flat opening. The bottom end of the material distribution hopper (9) is fixedly connected to the top opening of the material spreading box (11), and the inside of the material spreading box (11) is a rectangular funnel-shaped slot structure.

3. The sheet extruder with adjustable thickness according to claim 2, characterized in that: The rolling mechanism includes a fixed seat fixedly installed at the inner end of the sliding groove, an inner pressure roller (12) rotatably disposed between the two fixed seats, a moving frame (13) slidably disposed between the two sliding grooves, and an outer pressure roller (14) rotatably disposed inside the moving frame (13). The sliding grooves at the rear ends of the upper frame plate (3) and the lower frame plate (4) are both equipped with a lead screw (15) rotatably disposed. The fixed seats at the rear ends of the sliding grooves of the upper frame plate (3) and the lower frame plate (4) are both equipped with a micro motor for driving the lead screw (15) rotatably disposed. The front and rear ends of the moving frame (13) extend movably into the sliding groove. The sliding grooves at the rear ends of the upper frame plate (3) and the lower frame plate (4) are fixedly connected to a guide rod (25) rotatably disposed. The front frame of the moving frame (13) located in the front sliding groove is provided with a guide hole that mates with the guide rod (25) rotatably disposed. The rear frame of the moving frame (13) located in the rear sliding groove is provided with a threaded hole that mates with the lead screw (15) rotatably disposed.

4. The sheet extruder with adjustable thickness according to claim 3, characterized in that: The outer wall of the inner end of the discharge flat tube (19) is located above the inner pressure roller (12) and the outer pressure roller (14); the bottom outer end of the movable frame (13) in the upper frame plate (3) is vertically fixed with a baffle, and the bottom end of the baffle is in contact with the top surface of the movable frame (13) inside the lower frame plate (4); the front end of the movable frame (13) is provided with a motor for driving the outer pressure roller (14), and the outer end face of the movable frame (13) is provided with a horizontally penetrating air pipe.

5. The sheet extruder with adjustable thickness according to claim 1, characterized in that: The inner top surface of the electric heating mixing tank (6) is vertically rotatably provided with a spiral stirring shaft (29) for mixing materials inside the tank. The bottom end of the spiral stirring shaft (29) is vertically fixed with a spline sleeve (30) that cooperates with the hammering component.

6. The sheet extruder with adjustable thickness according to claim 5, characterized in that: The striking assembly includes a rotating shaft (20) that is vertically rotatable in the middle of the top surface of the longitudinal beam (10), a mounting sleeve fixedly sleeved on the lower part of the rotating shaft (20), and multiple deflection seats (22) that are equidistantly hinged to the outer wall of the mounting sleeve. A horizontally placed fixing rod is provided in the groove of the deflection seat (22), and a pull rope (23) is fixed on the fixing rod. A hemispherical impact block (24) is installed at the bottom of the hanging end of the pull rope (23). The top end of the rotating shaft (20) extends into the interior of the electric heating mixing tank (6) and is vertically fixed to a spline shaft (21). The spline sleeve (30) at the bottom end of the spiral stirring shaft (29) is sleeved on the outside of the spline shaft (21).

7. The sheet extruder with adjustable thickness according to claim 1, characterized in that: The outer side of the guide seat (17) is an arc-shaped slope, and multiple air holes are evenly opened on the arc-shaped slope of the outer side of the guide seat (17) for sheet material feeding. A diversion cavity is opened in the lower part of the guide seat (17), and the inner end of each air hole is connected to the diversion cavity.

8. The sheet extruder with adjustable thickness according to claim 7, characterized in that: The cooling mechanism includes a cooler (28) located at the bottom of the distribution chamber, a ventilation ring plate (26) installed inside multiple air holes, and a lubrication ball (27) rolled and embedded in the inner ring of the ventilation ring plate (26). The air inlet end of the cooler (28) is equipped with an air inlet pipe, and the outer end of the air inlet pipe extends out of the guide seat (17). The outer end of the air inlet pipe is provided with a dustproof net.

9. The sheet extruder with adjustable thickness according to claim 8, characterized in that: The outer surface of the ventilation ring plate (26) is provided with multiple arc-shaped exhaust ports at equal intervals; a cleaning block for wiping by the lubricating ball bearing (27) is installed on the inner side of the ventilation ring plate (26).

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