Three-screw one-step forming process and equipment for stone-plastic box plate

Abstract

The invention belongs to the technical field of plastic processing, and discloses a three-screw one-step molding process and equipment for a stone-plastic boxboard, which comprises a base, a three-screw extruder arranged at the top of the base, a discharge port arranged at one side of the three-screw extruder, a feed tank arranged at the top of the three-screw extruder, and a discharge port arranged at the other side of the three-screw extruder, a transmission reduction gearbox is arranged on the top of the base and located on one side of the three-screw extruder, a main motor is arranged on one side of the transmission reduction gearbox, a discharging device is arranged at the bottom end of a feeding tank and located on the top of the three-screw extruder, a control device is arranged on the rear side of the three-screw extruder, a feeding device is arranged at the bottom of the feeding tank, and an exhaust pipe is arranged on one side of the feeding tank. The feeding speed in the feeding tank is controlled through the rotating shaft and the control structure in the feeding tank, and through the action of the exhaust device, the feeding stability and uniformity of the feeding tank are enhanced when the feeding tank is used for feeding the three-screw extruder, so that the stability of the feeding tank is improved, and improvement is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic processing, and in particular relates to a three-screw one-step forming process and equipment for a stone plastic box plate. Background Art

[0002] The three-screw one-step forming carbon-based stone plastic board is a high-quality, high-tech new type of floor decoration material. It belongs to a category of PVC flooring, specifically PVC sheet flooring. This material is mainly composed of PVC resin and calcium carbonate, and is prepared by a new dynamic three-screw extrusion molding technology. This technology significantly improves the elongation at break of the product by introducing a vibration force field, thereby enhancing the mechanical properties of the material. In the production process of the three-screw one-step forming carbon-based stone plastic board, the raw materials are specially treated to form a solid base with a high-density, high-fiber mesh structure, and the surface is covered with a super wear-resistant polymer PVC wear-resistant layer, which is processed through hundreds of processes. This floor is not only green and environmentally friendly, but also has the advantages of ultra-light and ultra-thin, super wear-resistant, super anti-slip and fire-retardant, making it a widely used floor decoration material in public places such as airports, hospitals, kindergartens, schools, etc.

[0003] In the prior art, when feeding materials through a feed bin, if the feed bin loader is unstable during operation, the processing efficiency of the equipment will be reduced, and the probability of equipment failure will increase, which is not conducive to improving production efficiency. Summary of the invention

[0004] The present invention aims at the problems in the prior art and proposes the following technical solutions: a three-screw one-step forming process and equipment for stone plastic box board, comprising a base, a three-screw extruder is arranged on the top of the base, a discharge port is arranged on one side of the three-screw extruder, a feed tank is arranged on the top of the three-screw extruder, a transmission reduction box is arranged on the top of the base and located on one side of the three-screw extruder, a main motor is arranged on one side of the transmission reduction box, a discharge device is arranged at the bottom of the feed tank and located on the top of the three-screw extruder, a control device is arranged on the rear side of the three-screw extruder, an exhaust pipe is arranged on one side of the feed tank, a servo motor is arranged on the top of the feed tank, a rotating shaft is fixedly connected to the output end of the servo motor, a stirring shaft is fixedly installed on the outer surface of the rotating shaft, a control structure is arranged at the bottom of the rotating shaft, air outlets are opened on both sides of the bottom end of the feed tank, a filter screen is fixedly installed inside the air outlet, a mounting block is fixedly installed at the bottom end of the feed tank, and an exhaust device is arranged inside the mounting block;

[0005] A three-screw one-step forming process for stone plastic box board includes the following steps:

[0006] Step 1: Prepare the raw materials, screen and process them, mix them in a certain proportion, convey the materials to the high mixing pot through automatic metering and Roots blower, cool them through a cooler, and then put the mixed powder and polypropylene directly into the feed tank after cold mixing, feed them to the three-screw extruder through the feed tank, and use the automatic control device to make the three-screw extruder process the raw materials under high temperature and high pressure;

[0007] Step 2: The raw material extruded by the three-screw extruder is extruded into a shape through a substrate mold, and the extruded raw material is shaped through a shaping mold to ensure the stability of the product and the accuracy of the shape. After the raw material is solidified and shaped, it is cooled in a shaping cooling machine. After the cooling is completed, it is transported to the stress removal shaping machine by a six-roller traction machine to remove the stress, and then the formed stone plastic box board is straightened and adjusted by heating and straightening;

[0008] Step 3: The temperature of the plate is quickly reduced by an efficient air cooling device at the rear end of the production line, and the plate is transported to the cutting machine through a three-roller traction machine. The cutting machine cuts the plate into standard sizes as required, and the plate is stacked on the stacking platform by a stacking machine.

[0009] Step 4: Finally, the product is inspected to ensure that the product quality meets the standards before it can be put into storage and wait for sale.

[0010] As a preferred embodiment of the above technical solution, a feed port is opened at the top of the feed tank and located on one side of the servo motor, a first filter plate is fixedly installed at the top inside the feed tank, the rotating shaft passes through the first filter plate and extends to the bottom of the fixed block, and a material guide plate is hinged on the inner wall of the feed tank and located at the top of one end of the exhaust pipe.

[0011] As a preferred embodiment of the above technical solution, the control structure includes a threaded rod, a connecting rod is fixedly connected to the bottom end of the threaded rod, a fixed plate is fixedly installed on the bottom of the connecting rod, a moving ring is threadedly connected to the top end of the threaded rod, a first electric push rod is fixedly installed on the bottom end of the moving ring, a first magnetic block is fixedly installed on the bottom of the first electric push rod, a second electric push rod is fixedly installed on the top of the fixed plate, a second magnetic block is fixedly installed on the top of the second electric push rod, the first magnetic block is magnetically connected to the second magnetic block, a push plate is hinged at the bottom of the moving block and located on one side of the first electric push rod, a fixed block is arranged at the bottom end of the feed tank, the moving block is movably connected inside the fixed block, and one end of the push plate is hinged to the top of the moving block.

[0012] As a preferred embodiment of the above technical solution, the bottom of the threaded rod is fixedly installed on the bottom of the rotating shaft, one side of the fixed block is fixedly installed on the inner wall of the feed tank, connecting springs are fixedly installed on both ends of the bottom of the movable ring, the bottom end of the connecting spring is fixedly installed on the top of the fixed plate, and a limiting rod is arranged between the first electric push rod and the connecting spring, the bottom of the limiting rod is fixedly installed on the top of the fixed plate, one end of the limiting rod is movably connected to the movable ring, and it passes through the movable ring and extends to the bottom of the stirring shaft.

[0013] As a preferred embodiment of the above technical solution, a moving opening is opened on the top of the fixed block, a baffle is fixedly installed on the top of the moving block, limiting blocks are fixedly installed on both sides of the baffle, limiting grooves are opened on the inner walls on both sides of the moving opening, the limiting blocks are slidably connected to the limiting grooves, and material guide blocks are arranged on the top of the fixed block and the moving block, and one side of the material guide block is fixedly installed on the inner wall of the feed tank.

[0014] As a preferred embodiment of the above technical solution, a first electric telescopic rod is fixedly installed on the bottom of the fixed block, a buffer plate is hinged on the bottom of the first electric push rod, a buffer spring is fixedly installed on the bottom of the buffer plate, one end of the buffer spring is fixedly installed on the bottom of the fixed block, a mounting groove is opened on the top of the buffer plate, a second electric telescopic rod is fixedly installed inside the mounting groove, a mounting plate is fixedly installed on the bottom of the second electric telescopic rod, and three dredging rods are fixedly installed on the top of the mounting plate.

[0015] As a preferred embodiment of the above technical solution, the air outlet is located at the top of the guide plate, exhaust ports are opened on both sides of the mounting block, the exhaust ports are arranged opposite to the air outlet, support rods are fixedly installed at the four corners of the bottom of the mounting block, the bottom of the support rods are respectively fixed to the transfer reduction box and the top of the three-screw extruder, and the exhaust device is symmetrically arranged around the center of the mounting block.

[0016] As a preferred embodiment of the above technical solution, the exhaust device includes a first motor, a rotating rod is fixedly installed on the output end of the first motor, one end of the rotating rod is rotatably connected to the inner wall of the mounting block, a fixing ring is fixedly installed in the middle of the rotating rod, and rotating plates are fixedly installed on both sides of the fixing ring, and one side of the rotating plate is arranged opposite to the filter screen.

[0017] As a preferred embodiment of the above technical solution, a second filter is fixedly installed on the inner wall of one end of the exhaust duct, and a movable rod is rotatably connected to one side of the second filter and located on the inner wall of the exhaust duct. A movable plate is fixedly installed on the outer surface of one end of the movable rod. The movable plates are distributed in a circular array with the center of the movable rod and are located at the bottom of the guide plate. Three fixed rods are arranged on one side of the connecting block, and cleaning brushes are fixedly installed on the top of the three fixed rods.

[0018] The beneficial effects of the present invention are:

[0019] (1) The present invention controls the feeding speed in the feed tank through the rotating shaft and the control structure inside the feed tank, and continuously introduces air into the feed tank through the exhaust device, which can reduce the friction resistance of the silo wall and play a role in loosening the powder material, thereby achieving the purpose of flow assistance and improving the feeding efficiency, thereby improving the feeding stability and uniformity of the feed tank when feeding the three-screw extruder, thereby facilitating the improvement of the stability of the feed tank;

[0020] (2) The present invention further improves the feeding stability of the feed trough through the exhaust pipe, and at the same time, the exhaust pipe is kept unobstructed through the material guide plate and the rotating plate, thereby preventing raw materials from accumulating at the exhaust pipe opening, affecting the exhaust effect of the exhaust pipe, and affecting the feeding stability of the feed tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment;

[0022] Figure 2 What is shown is a schematic diagram of the rear side structure of the overall structure of the embodiment;

[0023] Figure 3 Shown is a cross-sectional view of an embodiment feed tank;

[0024] Figure 4 Shown is a cross-sectional view of an embodiment buffer plate;

[0025] Figure 5 What is shown is the internal structure diagram of the feed tank of the embodiment;

[0026] Figure 6 Shown is a block diagram of an embodiment control structure;

[0027] Figure 7 What is shown is a structural diagram of a moving block and a fixed block of an embodiment;

[0028] Figure 8 Shown is a diagram of the internal structure of the mounting block of the embodiment;

[0029] Fig. 9 Shown is a front view of the internal structure of the exhaust duct of the embodiment.

[0030] In the figure: 1, base; 2, three-screw extruder; 3, discharge port; 4, feed tank; 5, transmission reduction box; 6, main motor; 7, discharge device; 8, control device; 9, second electric push rod; 10, exhaust pipe; 11, servo motor; 12, rotating shaft; 13, stirring shaft; 14, filter screen; 15, mounting block; 16, exhaust device; 161, first motor; 162, rotating rod; 163, rotating plate; 17, first filter plate; 18, guide plate; 19, threaded rod; 2 0. Connecting rod; 21. Fixed plate; 22. Moving ring; 23. First electric push rod; 24. First magnetic block; 25. Second magnetic block; 26. Push plate; 27. Fixed block; 28. Moving block; 29. ​​Baffle; 30. Limiting rod; 31. Limiting block; 32. Guide block; 33. Second filter; 34. Movable rod; 35. Movable plate; 36. Cleaning brush; 37. First electric telescopic rod; 38. Buffer plate; 39. Second electric telescopic rod; 40. Mounting plate; 41. Clearing rod. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0032] The present invention provides a three-screw one-step forming process and equipment for stone plastic box board, such as Figures 1 to 7 As shown, it includes a base 1, a three-screw extruder 2 is arranged on the top of the base 1, a discharge port 3 is arranged on one side of the three-screw extruder 2, a feed tank 4 is arranged on the top of the three-screw extruder 2, a transmission reduction box 5 is arranged on the top of the base 1 and located on one side of the three-screw extruder 2, a main motor 6 is arranged on one side of the transmission reduction box 5, a discharge device 7 is arranged at the bottom of the feed tank 4 and located on the top of the three-screw extruder, a control device 8 is arranged on the rear side of the three-screw extruder 2, an exhaust pipe 10 is arranged on one side of the feed tank 4, a servo motor 11 is arranged on the top of the feed tank 4, a rotating shaft 12 is fixedly connected to the output end of the servo motor 11, a stirring shaft 13 is fixedly installed on the outer surface of the rotating shaft 12, a control structure is arranged at the bottom of the rotating shaft 12, air outlets are opened on both sides of the bottom end of the feed tank 4, a filter screen 14 is fixedly installed inside the air outlet, a mounting block 15 is fixedly installed at the bottom of the feed tank 4, and an exhaust device 16 is arranged inside the mounting block 15;

[0033] A three-screw one-step forming process for stone plastic box board includes the following steps:

[0034] Step 1: prepare the raw materials, screen and process them, mix them according to a certain proportion, convey the materials to the high mixing pot through the Roots blower through automatic metering, cool them through the cooler, and then directly put the mixed powder and polypropylene into the feed tank 4 after cold mixing, feed them to the three-screw extruder 2 through the feed tank 4, and use the automatic control device 8 to make the three-screw extruder 2 process the raw materials in a high temperature and high pressure state;

[0035] Step 2: The raw material extruded by the three-screw extruder is extruded into a shape through a substrate mold, and the extruded raw material is shaped through a shaping mold to ensure the stability of the product and the accuracy of the shape. After the raw material is solidified and shaped, it is cooled in a shaping cooler. After cooling, it is transported to the stress removal shaping machine by a six-roller traction machine to remove the stress, and then the formed stone plastic box board is corrected and adjusted by a heating and straightening device;

[0036] Step 3: The temperature of the plate is quickly reduced by an efficient air cooling device at the rear end of the production line, and the plate is transported to the cutting machine through a three-roller traction machine. The cutting machine cuts the plate into standard sizes as required, and the plate is stacked on the stacking platform by a stacking machine.

[0037] Step 4: Finally, the product is inspected to ensure that the product quality meets the standards before it can be put into storage and wait for sale.

[0038] The control structure includes a threaded rod 19, a connecting rod 20 is fixedly connected to the bottom end of the threaded rod 19, a fixed plate 21 is fixedly installed at the bottom of the connecting rod 20, a moving ring 22 is threadedly connected to the top of the threaded rod 19, a first electric push rod 23 is fixedly installed at the bottom of the moving ring 22, a first magnetic block 24 is fixedly installed at the bottom of the first electric push rod 23, a second electric push rod 9 is fixedly installed on the top of the fixed plate 21, a second magnetic block 25 is fixedly installed on the top of the second electric push rod 9, the first magnetic block 24 is magnetically connected to the second magnetic block 25, a push plate 26 is hinged at the bottom of the moving block 28 and located on one side of the first electric push rod 23, a fixed block 27 is arranged at the bottom end of the feed tank 4, the moving block 28 is movably connected inside the fixed block 27, and one end of the push plate 26 is hinged to the top of the moving block 28.

[0039] The three-screw extruder 2, the transmission reduction box 5 and the main motor 6 are installed through the base 1, and the mixed raw materials are put into the inside of the feed tank 4. The servo motor 11 is started by the control device 8 to drive the rotating shaft 12 and the stirring rod to rotate, so that the stirring rod stirs the raw materials. At the same time, when the rotating rod 162 rotates, it drives the threaded rod 19 to rotate. Through the action of the limiting rod 30, the moving ring 22 drives the first electric push rod 23 to move downward, so that the pushing plate 26 hinged at the bottom of the moving ring 22 deflects, so that the pushing plate 26 drives the moving block 28 to move toward the inside of the fixed block 27, and when the moving ring 22 moves to the bottom end of the threaded rod 19, the first electric push rod 23 drives the first magnetic block 24 to move downward, so that the two moving blocks 28 are respectively moved to the inside of the fixed block 27, so that the two moving blocks 28 are separated to expose the outlet at the bottom of the feed tank 4, and the second electric push rod 9 drives the second magnetic block 2 5 moves upward, so that the first magnetic block 24 and the second magnetic block 25 are magnetically attracted to each other, and the position of the moving ring 22 on the connecting rod 20 is fixed, and then the raw material is transported to the inside of the three-screw extruder 2 through the outlet and the discharging device 7, and is processed by the three-screw extruder using high temperature and high pressure, and the moving ring 22 moves on the connecting rod 20, so that the moving block 28 is moved by the deflection of the push plate 26, and the distance between the moving blocks 28 is controlled, and the first electric push rod 23 and the second electric push rod 9 are extended and retracted, and the first magnetic block 24 and the second magnetic block 25 are adsorbed, so that the position of the moving ring 22 on the connecting rod 20 is fixed, so that the distance between the moving blocks 28 is controlled, and then the rotating shaft 12 drives the stirring shaft 13 to stir the raw material, and at the same time, the amount and speed of the raw material discharge are controlled, so as to improve the stability and uniformity of the discharge of the feed tank 4, and to improve the production efficiency.

[0040] like Figures 1 to 3As shown, a feed port is provided at the top of the feed tank 4 and located on one side of the servo motor 11, a first filter plate 17 is fixedly installed at the top inside the feed tank 4, the rotating shaft 12 passes through the first filter plate 17 and extends to the bottom of the fixed block 27, and a material guide plate 18 is hingedly connected to the inner wall of the feed tank 4 and located at the top of one end of the exhaust pipe 10.

[0041] The mixed raw materials are transported to the interior of the feed tank 4 through the feed port, filtered through the first filter plate 17 to improve the quality of raw material processing and molding, and the guide plate 18 facilitates the raw materials to move downward after stirring, and move to the interior of the three-screw extruder through the discharge device 7, and can block one end of the exhaust pipe 10 to prevent the raw materials from entering the exhaust pipe 10, affecting the exhaust effect of the exhaust pipe 10, and not being convenient for improving the stability of the feed tank 4 during feeding.

[0042] like Figure 3 , Figure 5 , Figure 6 As shown, the bottom of the threaded rod 19 is fixedly installed on the bottom of the rotating shaft 12, one side of the fixed block 27 is fixedly installed on the inner wall of the feed tank 4, connecting springs are fixedly installed on both ends of the bottom of the movable ring 22, and the bottom end of the connecting spring is fixedly installed on the top of the fixed plate 21. A limiting rod 30 is arranged between the first electric push rod 23 and the connecting spring, and the bottom of the limiting rod 30 is fixedly installed on the top of the fixed plate 21. One end of the limiting rod 30 is movably connected to the movable ring 22, and it passes through the movable ring 22 and extends to the bottom of the stirring shaft 13.

[0043] By limiting the rod 30, the movable ring 22 can be easily moved up and down on the threaded rod 19. When it moves to the bottom end of the threaded rod 19, since the diameter of the connecting rod 20 is smaller than the diameter of the threaded rod 19, the first magnetic block 24 and the second magnetic block 25 are magnetically connected through the extension of the first electric push rod 23 and the second electric push rod 9, so that the connecting spring is compressed, so that the movable ring 22 moves to the connecting rod 20, and the position on the connecting rod 20 is limited. When the first electric push rod 23 and the second electric push rod 9 shrink, the first magnetic block 24 and the second magnetic block 25 are separated by the action of the connecting spring, pushing the movable ring 22 to move to the threaded rod 19. Through the rotation of the threaded rod 19, the movable ring 22 is driven to move upward, so that the push plate 26 is deflected to drive the movable blocks 28 to move closer to each other, so that the feeding speed and feeding amount of the feeding tank 4 are changed.

[0044] like Figure 6 to Figure 7 As shown, a moving opening is opened on the top of the fixed block 27, a baffle 29 is fixedly installed on the top of the moving block 28, limiting blocks 31 are fixedly installed on both sides of the baffle 29, limiting grooves are opened on the inner walls on both sides of the moving opening, and the limiting blocks 31 are slidably connected to the limiting grooves. A material guide block 32 is arranged on the top of the fixed block 27 and the moving block 28, and one side of the material guide block 32 is fixedly installed on the inner wall of the feed tank 4.

[0045] When the moving block 28 moves, it drives the baffle 29 to move away from the connecting rod 20, so that the limiting block 31 inside the baffle 29 moves along the limiting groove, so that the baffle 29 moves to the moving opening away from one end of the moving block 28, thereby blocking the moving opening at the top of the fixed block 27, so as to prevent the raw materials from entering the interior of the fixed block 27 through the moving opening, affecting the movement of the moving block 28, and thus affecting the feeding efficiency of the feed tank 4.

[0046] like Figure 3 to Figure 4 As shown, a first electric telescopic rod 37 is fixedly installed on the bottom of the fixed block 27, a buffer plate 38 is hinged on the bottom of the first electric push rod 37, a buffer spring is fixedly installed on the bottom of the buffer plate 38, one end of the buffer spring is fixedly installed on the bottom of the fixed block 27, a mounting groove is opened on the top of the buffer plate 38, a second electric telescopic rod 39 is fixedly installed inside the mounting groove, a mounting plate 40 is fixedly installed on the bottom of the second electric telescopic rod 39, and three dredging rods 41 are fixedly installed on the top of the mounting plate 40.

[0047] When the moving block 28 moves, the raw material is conveyed downward through the gap between the moving blocks 28, and the raw material falls onto the buffer plate 38. The buffer spring is compressed to deflect the buffer plate 38, thereby facilitating the buffering of the fallen raw material and facilitating uniform feeding of the raw material. When the moving block 28 moves, the raw material blocks the gap between the moving blocks 28, the buffer plate 38 is driven to move upward by starting the first electric telescopic rod 37, so that the clearing rod 41 on the top of the buffer plate 38 moves to the gap between the moving blocks 28, and then the second electric telescopic rod 39 is started to push the mounting plate 40 and the three clearing rods 41 upward, so that the blocked gap between the moving blocks 28 is cleared, thereby facilitating improving the efficiency of raw material transportation.

[0048] like Figure 3 , Figure 5 As shown, the air outlet is located at the top of the guide plate 18, and exhaust ports are provided on both sides of the mounting block 15. The exhaust ports are arranged opposite to the air outlets. Support rods are fixedly installed at the four corners of the bottom of the mounting block 15, and the bottoms of the support rods are respectively fixedly installed on the tops of the transfer reduction box 5 and the three-screw extruder 2, and the chip removal device 16 is symmetrically arranged with respect to the center of the mounting block 15.

[0049] The air outlet and the exhaust port facilitate exhaust during raw material transportation, thereby improving the stability of the feed tank 4 during feeding and transportation. The support rod facilitates fixing the mounting block 15, thereby improving the stability of the exhaust device 16 inside the mounting block 15 during use, making it easier to use.

[0050] like Figure 3 , Figure 4 , Figure 7As shown, the exhaust device 16 includes a first motor 161, and a rotating rod 162 is fixedly installed at the output end of the first motor 161. One end of the rotating rod 162 is rotatably connected to the inner wall of the mounting block 15. A fixing ring is fixedly installed in the middle of the rotating rod 162, and rotating plates 163 are fixedly installed on both sides of the fixing ring. One side of the rotating plate 163 is arranged opposite to the filter screen 14.

[0051] The first motor 161 drives the rotating rod 162 and the fixed ring to rotate, so that the rotating plate 163 rotates, thereby improving the exhaust effect on the bottom end of the feed tank 4. At the same time, when the rotating plate 163 rotates, it will knock on the filter screen 14, causing the filter screen 14 to vibrate, and the raw materials adhered to the filter screen 14 will be shaken off, so as to prevent the raw materials from clogging the filter screen 14 and affecting the exhaust effect.

[0052] like Figures 8 to 9 As shown, a second filter 33 is fixedly installed on the inner wall of one end of the exhaust pipe 10, and a movable rod 34 is rotatably connected to one side of the second filter 33 and located on the inner wall of the exhaust pipe 10. A movable plate 35 is fixedly installed on the outer surface of one end of the movable rod 34. The movable plates 35 are distributed in a circular array with the movable rod 34 as the center, and are located at the bottom of the guide plate 18. Three fixed rods are arranged on one side of the connecting block, and cleaning brushes 36 are fixedly installed on the top of the three fixed rods.

[0053] The gas discharged from the exhaust pipe 10 is filtered through the second filter 33. When the exhaust pipe 10 exhausts gas outward, the gas pushes the movable rod 34 to rotate, so that the movable rod 34 drives the movable plate 35 to rotate. When the movable plate 35 rotates, it hits the guide plate 18 to shake off the raw materials accumulated on the guide plate 18. At the same time, the movable plate 35 drives the cleaning brush 36 on one side thereof to rotate, so that the cleaning brush 36 cleans the inner wall of the end of the exhaust pipe 10 close to the guide plate 18, so as to prevent the raw materials from adhering to the inner wall of the exhaust pipe 10 or the inner wall of the feed tank 4 at the exhaust pipe 10, blocking the exhaust pipe 10, making it inconvenient for the exhaust pipe 10 to exhaust gas, thereby affecting the stability of the raw material discharge and feeding.

[0054] Working principle: When in use, the mixed raw materials are put into the feed tank 4, and the servo motor 11 is started by the control device 8 to drive the rotating shaft 12 and the stirring rod to rotate, so that the stirring rod stirs the raw materials. At the same time, when the rotating rod 162 rotates, it drives the threaded rod 19 to rotate, and the moving ring 22 drives the first electric push rod 23 to move downward through the action of the limiting rod 30, so that the pushing plate 26 hinged at the bottom of the moving ring 22 deflects, so that the pushing plate 26 drives the moving block 28 to move toward the inside of the fixed block 27, and when the moving ring 22 moves to the bottom end of the threaded rod 19, the first magnetic block 24 is driven to move downward by the first electric push rod 23, thereby The two moving blocks 28 are respectively moved to the inside of the fixed block 27, so that the two moving blocks 28 are separated to expose the outlet at the bottom of the feed tank 4, and the second electric push rod 9 drives the second magnetic block 25 to move upward, so that the first magnetic block 24 and the second magnetic block 25 are magnetically attracted to each other, and the position of the moving ring 22 on the connecting rod 20 is fixed, and then the raw material guide block 32 is transported to the outlet. When the raw material is transported downward, the raw material falls on the buffer plate 28, so that the buffer plate 38 is deflected, and the buffer spring is compressed to buffer the raw material. The buffered raw material is transported to the inside of the three-screw extruder 2 through the outlet and the discharging device 7, and is processed by the three-screw extruder using high temperature and high pressure.

[0055] When the feed tank 4 is feeding, the material enters the feed tank 4 through the guide plate 18 and is exhausted through the exhaust tank. The gas inside the exhaust pipe 10 drives the movable rod 34 to rotate, so that the movable rod 34 drives the movable plate 35 to rotate. When the movable plate 35 rotates, it hits the guide plate 18, and the raw materials accumulated on the guide plate 18 are shaken off. At the same time, the movable plate 35 drives the cleaning brush 36 on one side thereof to rotate, so that the cleaning brush 36 cleans the inner wall of the exhaust pipe 10 near the guide plate 18, so as to prevent the raw materials from adhering to the inner wall of the exhaust pipe 10 or adhering to the feed tank 10 at the exhaust pipe 10. The exhaust pipe 10 is blocked on the inner wall of the material tank 4. When the raw material moves from the bottom end of the feed tank 4 to the inside of the feeding device, the first motor 161 is started at the same time to drive the rotating and fixed rings to rotate, so that the rotating plate 163 rotates, and exhaust is carried out through the first filter plate 17. At the same time, the rotating plate 163 hits the first filter plate 17 when rotating, so that the filter screen 14 vibrates, and the raw material adhering to the filter screen 14 is shaken off, so as to prevent the raw material from clogging the filter screen 14, so that the evenly mixed raw material can quickly and stably enter the inside of the discharging device 7 and be processed by the three-screw extruder.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

Claims

1. A three-screw one-step forming process and equipment for stone plastic box board, comprising a base (1), characterized in that: A three-screw extruder (2) is arranged on the top of the base (1), a discharge port (3) is arranged on one side of the three-screw extruder (2), a feed tank (4) is arranged on the top of the three-screw extruder (2), a transmission reduction box (5) is arranged on the top of the base (1) and located on one side of the three-screw extruder (2), a main motor (6) is arranged on one side of the transmission reduction box (5), a discharge device (7) is arranged at the bottom of the feed tank (4) and located on the top of the three-screw extruder, a control device (8) is arranged on the rear side of the three-screw extruder (2), and the feed tank (4) is provided with a plurality of control devices. An exhaust pipe (10) is provided on one side, a servo motor (11) is provided on the top of the feed tank (4), a rotating shaft (12) is fixedly connected to the output end of the servo motor (11), a stirring shaft (13) is fixedly mounted on the outer surface of the rotating shaft (12), a control structure is provided at the bottom of the rotating shaft (12), air outlets are provided on both sides of the bottom end of the feed tank (4), a filter screen (14) is fixedly mounted inside the air outlet, a mounting block (15) is fixedly mounted on the bottom end of the feed tank (4), and an exhaust device (16) is provided inside the mounting block (15); A three-screw one-step forming process for stone plastic box board includes the following steps: Step 1: prepare raw materials, screen and process them, mix them according to a certain ratio, convey the materials to a high-mixing pot through automatic metering via a Roots blower, cool them through a cooler, and then directly put the mixed powder and polypropylene into a feed tank (4) after cold mixing, feed them to a three-screw extruder (2) through the feed tank (4), and use an automatic control device (8) to enable the three-screw extruder (2) to process the raw materials under high temperature and high pressure; Step 2: The raw material extruded by the three-screw extruder is extruded into a shape through a substrate mold, and the extruded raw material is shaped through a shaping mold to ensure the stability of the product and the accuracy of the shape. After the raw material is solidified and shaped, it is cooled in a shaping cooler. After cooling, it is transported to the stress removal shaping machine by a six-roller traction machine to remove the stress, and then the formed stone plastic box board is corrected and adjusted by a heating and straightening device; Step 3: The temperature of the plate is quickly reduced by an efficient air cooling device at the rear end of the production line, and the plate is transported to the cutting machine through a three-roller traction machine. The cutting machine cuts the plate into standard sizes as required, and the plate is stacked on the stacking platform by a stacking machine. Step 4: Finally, the product is inspected to ensure that the product quality meets the standards before it can be put into storage and wait for sale.

2. A three-screw one-step forming process and equipment for stone plastic box board according to claim 1, characterized in that: A feed port is provided at the top of the feed tank (4) and located on one side of the servo motor (11); a first filter plate (17) is fixedly installed at the top of the inside of the feed tank (4); the rotating shaft (12) passes through the first filter plate (17) and extends to the bottom of the fixed block (27); and a guide plate (18) is hingedly connected to the inner wall of the feed tank (4) and located at the top of one end of the exhaust pipe (10).

3. A three-screw one-step forming process and equipment for stone plastic box board according to claim 1, characterized in that: The control structure comprises a threaded rod (19), the bottom end of the threaded rod (19) is fixedly connected to a connecting rod (20), the bottom of the connecting rod (20) is fixedly mounted with a fixing plate (21), the top end of the threaded rod (19) is threadedly connected to a moving ring (22), the bottom end of the moving ring (22) is fixedly mounted with a first electric push rod (23), the bottom of the first electric push rod (23) is fixedly mounted with a first magnetic block (24), and the top of the fixing plate (21) is fixedly mounted with a second electric push rod (23). A movable push rod (9), a second magnetic block (25) is fixedly installed on the top of the second electric push rod (9), the first magnetic block (24) is magnetically connected to the second magnetic block (25), a push plate (26) is hinged at the bottom of the movable block (28) and located on one side of the first electric push rod (23), a fixed block (27) is arranged at the bottom end of the feed tank (4), a movable block (28) is movably connected inside the fixed block (27), and one end of the push plate (26) is hinged to the top of the movable block (28).

4. A three-screw one-step forming process and equipment for stone plastic box board according to claim 3, characterized in that: The bottom of the threaded rod (19) is fixedly mounted on the bottom of the rotating shaft (12); one side of the fixed block (27) is fixedly mounted on the inner wall of the feed tank (4); connecting springs are fixedly mounted on both ends of the bottom of the movable ring (22); the bottom end of the connecting spring is fixedly mounted on the top of the fixed plate (21); a limiting rod (30) is arranged between the first electric push rod (23) and the connecting spring; the bottom of the limiting rod (30) is fixedly mounted on the top of the fixed plate (21); one end of the limiting rod (30) is movably connected to the movable ring (22), and the limiting rod passes through the movable ring (22) and extends to the bottom of the stirring shaft (13).

5. A three-screw one-step forming process and equipment for stone plastic box board according to claim 3, characterized in that: A moving opening is provided on the top of the fixed block (27), a baffle (29) is fixedly mounted on the top of the moving block (28), limiting blocks (31) are fixedly mounted on both sides of the baffle (29), limiting grooves are provided on the inner walls on both sides of the moving opening, the limiting blocks (31) are slidably connected to the limiting grooves, and a material guide block (32) is provided on the top of the fixed block (27) and the moving block (28), and one side of the material guide block (32) is fixedly mounted on the inner wall of the feed tank (4).

6. A three-screw one-step forming process and equipment for stone plastic box board according to claim 3, characterized in that: A first electric telescopic rod (37) is fixedly mounted on the bottom of the fixed block (27); a buffer plate (38) is hingedly mounted on the bottom of the first electric push rod (37); a buffer spring is fixedly mounted on the bottom of the buffer plate (38); one end of the buffer spring is fixedly mounted on the bottom of the fixed block (27); a mounting groove is formed on the top of the buffer plate (38); a second electric telescopic rod (39) is fixedly mounted inside the mounting groove; a mounting plate (40) is fixedly mounted on the bottom of the second electric telescopic rod (39); and three dredging rods (41) are fixedly mounted on the top of the mounting plate (40).

7. A three-screw one-step forming process and equipment for stone plastic box board according to claim 1, characterized in that: The air outlet is located at the top of the guide plate (18), and exhaust ports are provided on both sides of the mounting block (15). The exhaust ports are arranged opposite to the air outlets. Support rods are fixedly installed at the four corners of the bottom of the mounting block (15), and the bottom of the support rods are respectively fixedly installed with the transmission reduction box (5) and the top of the three-screw extruder (2). The exhaust device (16) is symmetrically arranged with respect to the center of the mounting block (15).

8. The three-screw one-step forming process and equipment of stone plastic box board according to claim 1 is characterized in that: The exhaust device (16) comprises a first motor (161), a rotating rod (162) is fixedly mounted on the output end of the first motor (161), one end of the rotating rod (162) is rotatably connected to the inner wall of the mounting block (15), a fixing ring is fixedly mounted in the middle of the rotating rod (162), rotating plates (163) are fixedly mounted on both sides of the fixing ring, and one side of the rotating plate (163) is arranged opposite to the filter screen (14).

9. A three-screw one-step forming process and equipment for stone plastic box board according to claim 2, characterized in that: A second filter (33) is fixedly mounted on the inner wall of one end of the exhaust pipe, a movable rod (34) is rotatably connected to one side of the second filter (33) and is located on the inner wall of the exhaust pipe (10), a movable plate (35) is fixedly mounted on the outer surface of one end of the movable rod (34), the movable plates (35) are distributed in a circular array with the movable rod (34) at the center, and are located at the bottom of the guide plate (18), three fixed rods are arranged on one side of the connection block, and cleaning brushes (36) are fixedly mounted on the tops of the three fixed rods.

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