Die roller extrusion forming equipment

Abstract

The invention relates to the technical field of extrusion forming devices, in particular to die roller extrusion forming equipment which comprises a die and a compression roller, the die and the compression roller are each provided with a driving mechanism, or the die and the compression roller are in transmission connection, and one of the die and the compression roller is provided with a driving mechanism. Or the mold is fixed, and the compression roller is provided with a revolution driving mechanism for driving the compression roller to revolve and a rotation driving mechanism for driving the compression roller to rotate; the pressing roller is driven by a corresponding driving mechanism to rotate and enables all positions of a material pressing area of the pressing roller to slide relative to corresponding positions of a forming area of the mold, relative sliding of the pressing roller and the mold can exert rubbing force on materials in the forming area, the rubbing force enables the materials to be rubbed before the materials enter forming holes, the materials can be further smashed into fine particles, and therefore the forming efficiency is improved. And meanwhile, the material can be preheated, the pressure of the pressing roller for extruding the material into the forming hole can be reduced, a mold with a small thickness can be used, and therefore energy consumption can be reduced, and the equipment cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of extrusion molding devices, and particularly relates to a die-roller extrusion molding equipment. Background Art

[0002] The biomass densification molding technology is a technology that dries and crushes biomass raw materials and makes the raw materials form into a dense solid state under certain temperature, humidity and pressure. Its principle is to soften the lignin and cellulose in biomass such as straw by the heat generated by external heating or friction. At the same time, the granular materials are closely embedded and plastically deformed inside the mold due to the pressure. When the external pressure is removed and after cooling and pressure holding, it is densely formed.

[0003] Currently, the mainstream biomass solidification molding usually adopts die-roller extrusion molding equipment. The mainstream products of die-roller extrusion molding equipment are ring die pellet mills and flat die pellet mills. The basic principles of the two are similar. Under the pressure of the pressing roller, the raw materials are pressed into the forming holes of the ring die or flat die. The ring die or flat die is the mold. The heat generated by the friction between the forming holes and the biomass raises the temperature of the biomass to above 70°C, and the lignin in the biomass is softened. The softened lignin serves as a binder to bond the densely compressed biomass together. The pressing roller rolls continuously, and the pressure generated by it continuously extrudes the biomass from the forming holes of the forming mold to form dense biomass particles. The ring die pellet mill generally has a ring die forming mold and more than two pressing rollers. The main shaft drives the pressing rollers to revolve or the ring die to rotate, and brings the crushed biomass raw materials into the forming area for granulation. The flat die pellet mill generally has a flat die forming mold and more than two pressing rollers. The main shaft drives the pressing rollers to revolve or the flat die to rotate, and brings the crushed biomass raw materials into the forming area for granulation. When the pressing roller revolves around the axis of the main shaft, the pressing roller will rotate due to the acting force of the material between the outer peripheral surface of the pressing roller and the surface of the mold forming area, so that the pressing roller rolls in the mold forming area. The outer peripheral surface of the pressing roller has a material pressing area opposite to the mold forming area, so as to extrude the material into the forming holes of the mold forming area for granulation by rolling.

[0004] For the existing flat die pellet mill, such as a conical flat die granulator disclosed in a Chinese utility model patent with the authorization publication number of CN204193884U, its pressing roller is a conical pressing roller. The motor drives the main shaft to rotate, and then drives the pressing roller to revolve and rotate through the pressing roller shaft, and extrudes the material into the granulation holes for granulation. The inner end diameter of the conical pressing roller is smaller than the outer end diameter. When the linear speeds at both ends are inconsistent, the inner and outer ends can achieve synchronous rolling without sliding, so that the inner and outer ends of the pressing roller are evenly worn, thereby improving the service life.

[0005] In the above-mentioned die roller extrusion molding equipment, there is no sliding between the pressure roller and the mold. The material is squeezed into the molding hole of the mold by the pressure of the rolling pressure roller. The particle size of the material particles will not change significantly before entering the molding hole. Therefore, the pressure required for extrusion is relatively high, which requires the motor to have a larger power, thereby increasing energy consumption. Summary of the invention

[0006] The object of the present invention is to provide a die roller extrusion molding device to solve the problem that the existing die roller extrusion molding device relies on the pressure of the pressure roller when rolling to extrude into the molding hole of the mold, which requires a high pressure and increases energy consumption.

[0007] The technical scheme of the die roller extrusion molding equipment of the present invention is: A die roller extrusion molding equipment comprises a die and a pressure roller, wherein the die and the pressure roller are respectively provided with a driving mechanism, or the die is transmission-connected with the pressure roller and one of them is provided with a driving mechanism, or the die is fixed and the pressure roller is provided with a revolution driving mechanism for driving the same and a rotation driving mechanism for driving the same; the pressure roller is used for rotating under the drive of the corresponding drive mechanism and making each part of the material pressing area of ​​the pressure roller slide relative to the corresponding part of the molding area of ​​the die.

[0008] Furthermore, the pressing roller is a conical roller and the mold is a flat mold. When the pressing roller is driven to rotate, the difference between the linear speeds of the pressing area of ​​the conical roller and the corresponding linear speeds of the molding area of ​​the flat mold is consistent.

[0009] Furthermore, the transmission connection structure between the mold and the pressure roller includes a first gear coaxially arranged with the mold and a second gear coaxially arranged with the pressure roller. The first gear cooperates with the second gear to cause the pressure roller to rotate when the mold rotates or the pressure roller revolves, or to cause the mold to rotate or the pressure roller revolves when the pressure roller rotates. The gear parameters of the first gear and the second gear are changed to achieve the difference between the linear velocity of each location in the pressing area of ​​the pressure roller and the linear velocity of each location corresponding to the molding area of ​​the mold.

[0010] Furthermore, the mold is a flat mold, and the mold roller extrusion molding equipment also includes a mounting base and a pressure roller shaft rotatably supported on the mounting base, the pressure roller is mounted on the pressure roller shaft, the mold is equipped with a driving mechanism and the driving mechanism is a main driving mechanism, the main driving mechanism includes a main shaft rotatably mounted on the mounting base, the flat mold is relatively fixed to the main shaft, and the transmission connection structure between the mold and the pressure roller includes a first gear and a second gear meshing with each other, the first gear is mounted on the main shaft, and the second gear is mounted on the pressure roller shaft.

[0011] Furthermore, the die roller extrusion molding equipment also includes a supporting shell, which is provided with a pressure roller shaft through hole for the pressure roller shaft to pass through and a main shaft through hole for the main shaft to pass through, and the first gear and the second gear are both located in the supporting shell.

[0012] Furthermore, the main driving mechanism also includes a pressure-bearing turntable, the flat mold is fixed on the pressure-bearing turntable, and the pressure-bearing turntable is fixed on the main shaft.

[0013] Furthermore, the mold is a flat mold, and the die roller extrusion molding equipment also includes a mounting base and a pressure roller shaft rotatably supported on the mounting base, the pressure roller is anti-rotatingly installed on the pressure roller shaft, the mold is configured with a driving mechanism and the driving mechanism is a main driving mechanism, the main driving mechanism includes a main shaft rotatably installed on the mounting base, the flat mold is relatively fixed to the main shaft, the mounting base includes a main base and a pressure roller shaft mounting support, the pressure roller shaft mounting support is height-adjustably installed on the main base to make the gap between the pressure roller and the flat mold adjustable.

[0014] Furthermore, the transmission connection structure between the mold and the pressure roller includes a first gear and a second gear that are meshed with each other, the first gear is mounted on the main shaft to prevent rotation, and the second gear is mounted on the pressure roller shaft to prevent rotation. The mold roller extrusion molding equipment also includes a supporting shell, the supporting shell is provided with a pressure roller shaft through hole for the pressure roller shaft to pass through and a main shaft through hole for the main shaft to pass through, the first gear and the second gear are both located in the supporting shell, a first rotating support structure is provided between the pressure roller shaft and the hole wall of the pressure roller shaft through hole, a second rotating support structure is provided between the first gear and the supporting shell, and the first gear is movably arranged on the main shaft in the axial direction.

[0015] Furthermore, the die roller extrusion molding equipment also includes a pressure roller shaft and a pressure roller shaft rotation installation structure for rotatably installing the pressure roller shaft, and the pressure roller is anti-rotatably installed on the pressure roller shaft.

[0016] Furthermore, the difference between the linear speed at each location in the material pressing area of ​​the pressing roller and the linear speed at each location in the corresponding molding area of ​​the mold can be changed by changing the outer diameter of the pressing roller.

[0017] Beneficial effect: The present invention is improved on the basis of the die roller extrusion molding equipment in the prior art. While the mold is rotated or the pressure roller is revolved through the corresponding driving mechanism, the pressure roller is also actively driven to rotate through the corresponding driving mechanism. The rotation speed of the pressure roller can be controlled by actively driving the pressure roller to rotate, so that each part of the pressing area of ​​the pressure roller slides relative to the corresponding part of the molding area of ​​the mold, that is, the linear speed of each part of the pressing area of ​​the pressure roller is different from the linear speed of each part of the corresponding part of the molding area of ​​the mold, forming a linear speed difference. The relative sliding of the pressure roller and the mold will give the material in the molding area a kneading force, which makes the material be kneaded before entering the molding hole, and the material can be further crushed into fine particles. At the same time, the frictional heat generated during kneading can be used to preheat the material, reduce the pressure of the pressure roller to extrude the material into the molding hole, and use a mold with a smaller thickness, which is beneficial to reduce energy consumption and equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of Embodiment 1 of the die roller extrusion molding device of the present invention; Figure 2 for Figure 1 A schematic diagram of the installation structure of the pressure roller shaft mounting support and the main housing; Figure 3 for Figure 2 A top view of the adjustment mechanism in FIG. Figure 4 for Figure 2 A side view of the adjustment mechanism in FIG. Figure 5 It is a structural schematic diagram of Embodiment 2 of the die roller extrusion molding device of the present invention; Figure 6 It is a schematic structural diagram of Embodiment 3 of the die roller extrusion molding device of the present invention; Figure 7 It is a schematic structural diagram of Example 4 of the die roller extrusion molding equipment of the present invention.

[0019] In the figure: 1. flat die; 2. pressure roller; 3. pressure roller shaft; 4. large gear; 5. small gear; 6. main shaft; 7. upper clamping nut; 8. support shell; 9. pressure roller cover; 10. main drive motor; 11. locking nut; 12. pressure roller shaft mounting support; 13. wedge block; 131. connecting long groove; 14. adjusting screw; 15. main shell; 151. upper shell; 16. main bearing; 17. feed tray; 18. main base; 19. lower clamping nut; 20. pressure turntable; 21. transmission box; 22. hydraulic motor. DETAILED DESCRIPTION

[0020] The die roller extrusion molding equipment of the present invention actively drives the roller to rotate by the corresponding driving mechanism. By actively driving the roller to rotate, the rotation speed of the roller can be controlled, so that the pressing area of ​​the roller slides relative to the corresponding molding area of ​​the mold, that is, the linear speed of the pressing area of ​​the roller is different from the linear speed of the corresponding molding area of ​​the mold, forming a linear speed difference. The relative sliding of the roller and the mold will give the material in the molding area a kneading force, which makes the material kneaded before entering the molding hole, and the material can be further crushed into fine particles. By kneading and crushing the material, the pressure of the roller extruding the material into the molding hole can be reduced, which is conducive to reducing energy consumption. Moreover, by kneading the material, it is conducive to the material entering the mold molding hole smoothly. The heat generated by the kneading friction can also preheat the biomass raw material to a certain extent before entering the mold molding hole, which is conducive to reducing the stroke of the biomass raw material in the mold molding hole, and can achieve the purpose of reducing the molding pressure and reducing the mold thickness, which is conducive to reducing energy consumption and reducing equipment costs.

[0021] Embodiment 1 of the die roller extrusion molding device of the present invention: like Figure 1-4As shown, the die roller extrusion molding equipment is a flat die pellet machine, the die roller extrusion molding equipment includes a flat die 1, a pressure roller 2 and a main driving mechanism for driving the flat die 1 to rotate, the main driving mechanism includes a main driving motor 10, a transmission box 21, a main shaft 6, and a pressure-bearing turntable 20, and the die roller extrusion molding equipment also includes a mounting base, the mounting base includes a main housing 15 and a main base 18, the main housing 15 includes a cylinder, the bottom of the cylinder is fixed to the box of the transmission box 21, a plurality of reinforcing ribs are provided on the outer peripheral surface of the cylinder of the main housing 15, and an outer turning edge is provided at the upper end of the cylinder of the main housing 15. The main base 18 is fixed in the cylinder of the main housing 15, and a mounting hole for the main shaft 6 to pass through is provided on the main base 18, and a through hole for the lower end of the main shaft 6 to pass through is provided at the bottom of the cylinder of the main housing 15 so that the main shaft 6 is connected to the gear set in the transmission box 21. A step is provided at the lower part of the main shaft 6, and a bearing is provided at the step so that the lower part of the main shaft 6 can be rotatably supported on the main base 18.

[0022] A through hole for the spindle 6 to pass through is provided at the center of the pressure turntable 20, and welding is performed at the through hole, so that the pressure turntable 20 is fixed to the spindle 6. A main bearing 16 is provided at the upper part of the main base 18, and the pressure turntable 20 is supported on the main bearing 16. A lower clamping nut 19 is also threadedly connected to the lower part of the spindle 6. The lower clamping nut 19 is located below the bearing at the lower step of the spindle 6. By tightening the lower clamping nut 19, the pressure turntable 20 can be reliably supported on the main bearing 16. A mounting hole is provided at the lower part of the pressure turntable 20 for the upper part of the main base 18 to extend into, and a feed tray 17 is provided at the orifice of the mounting hole, and the feed tray 17 corresponds to the forming hole on the flat die 1. The flat die 1 is fixed to the upper side of the pressure turntable 20 by bolts. When the main drive motor 10 drives the main shaft 6 to rotate through the transmission box 21, the pressure turntable 20 rotates with the main shaft 6, and then the pressure turntable 20 drives the flat die 1 to rotate. The rotation of the flat die 1 also rotates around the axis of the main shaft 6.

[0023] The pressure roller 2 is a tapered roller, and the inner end of the tapered roller close to the main shaft 6 has a smaller diameter, and the outer end of the tapered roller away from the main shaft 6 has a larger diameter. The pressure roller 2 is non-rotatably mounted on the pressure roller shaft 3 and fixed by the pressure roller cover 9. The mounting base also includes a pressure roller shaft mounting support 12, and the pressure roller shaft 3 is rotatably mounted on the pressure roller shaft mounting support 12. The pressure roller shaft mounting support 12 is mounted on the outer turn-over edge of the upper end of the cylinder of the main housing 15. There are two pressure rollers 2 in this embodiment, which are symmetrically arranged on both sides of the main shaft 6. Accordingly, two pressure roller shaft mounting supports 12 are provided.

[0024] The pressure roller 2 is connected to the flat die 1 in a transmission manner so that when the main driving mechanism drives the flat die 1 to rotate, it can also actively drive the pressure roller 2 to rotate. The transmission connection structure of the pressure roller 2 and the flat die 1 includes a transmission gear set, which includes a large gear 4 and a small gear 5. The large gear 4 is fixedly mounted on the upper part of the main shaft 6, and the small gear 5 is fixedly mounted on the pressure roller shaft 3. When the main shaft 6 rotates, the large gear 4 rotates accordingly, and the large gear 4 drives the small gear 5 to rotate, and the small gear 5 drives the pressure roller shaft 3 to rotate, thereby causing the pressure roller 2 to rotate. The transmission connection structure of the pressure roller 2 and the flat die 1 shares the main shaft 6 with the main driving mechanism, that is, shares a power source, and the main drive motor 10 is the power source. The power source inputs power through the main driving mechanism, and while causing the flat die 1 to rotate, it also transmits power to the transmission gear set through the main driving mechanism to drive the pressure roller 2 to rotate.

[0025] The large gear 4 includes an upper section, a middle section and a lower section which are integrally arranged. The middle section of the large gear 4 has a larger diameter and is provided with teeth which cooperate with the pinion 5. The lower section of the large gear 4 cooperates with the main shaft 6 to stop rotation. The die roller extrusion molding device also includes a support shell 8. The large gear 4 and the pinion 5 are both located in the support shell 8. The large gear 4 constitutes a first gear and the pinion 5 constitutes a second gear. The support shell 8 includes an upper shell part and a lower shell part which are separately arranged. The upper shell part and the lower shell part are butted together to form an inner cavity of the support shell 8. The main shaft 6 passes through the inner cavity of the support shell 8 in the up-down direction. The upper shell part and the lower shell part of the support shell 8 are both provided with a main shaft through hole for the main shaft 6 to pass through. Bearings are provided between the upper end of the upper section of the large gear 4 and the hole wall of the upper main shaft 6 through hole, and between the lower section of the large gear 4 and the hole wall of the lower main shaft through hole. The bearings constitute a second rotation support structure between the first gear and the support shell 8. The side of the support shell 8 is also provided with a pressure roller shaft through hole for the pressure roller shaft 3 to pass through, and a bearing is provided between the pressure roller shaft 3 and the hole wall of the pressure roller shaft through hole, and the bearing constitutes a first rotating support structure. The inner end of the pressure roller shaft 3 extends into the inner cavity of the support shell 8, the pinion 5 is fixedly mounted on the inner end of the pressure roller shaft 3, and the pressure roller 2 is fixedly mounted in the middle part of the axial direction of the pressure roller shaft 3. The outer end of the pressure roller shaft 3 is rotatably supported on the pressure roller shaft mounting support 12 through a bearing, and the pressure roller shaft mounting support 12 constitutes a pressure roller shaft rotating mounting structure.

[0026] An adjustment mechanism is also provided between the roller shaft mounting support 12 and the main housing 15. The adjustment mechanism includes two wedges 13 arranged opposite to each other. The wedges 13 are cushioned between the bottom surface of the roller shaft mounting support 12 and the upper side surface of the outer edge of the main housing 15. The main housing 15 constitutes the main base. The bottom of the roller shaft mounting support 12 is provided with an inclined surface that matches the wedges 13. The two wedges 13 are connected by adjusting the screw 14 and the nut. The inclined surfaces of the two wedges 13 are arranged in a V shape. The distance between the two wedges 13 can be changed by screwing the nut on the adjusting screw 14, thereby adjusting the height of the roller shaft mounting support 12. The height of the roller shaft mounting support 12 can be changed by adjusting the position of the wedges 13, thereby making the gap between the roller 2 and the flat die 1 adjustable. The wedge 13 is provided with a connecting long groove 131, and the connecting long groove 131 is for the bolt to pass through so that the roller shaft mounting support 12 is fixed to the main housing 15 by bolts.

[0027] In order to adjust the gap between the pressure roller 2 and the flat die 1, the large gear 4 is movably arranged on the main shaft 6 in the axial direction. The large gear 4 is locked with the main shaft 6 through a key connection, and the key connection can slide up and down relative to ensure that the large gear 4 can move up and down relative to the main shaft 6, so that the large gear 4, the small gear 5, the support shell 8, the pressure roller 2, the pressure roller shaft 3, and the pressure roller shaft mounting bracket 12 can be adjusted together as a whole. In order to ensure a stable installation, an upper clamping nut 7 is provided at the upper end of the main shaft 6, and a bearing is provided at the upper opening of the main shaft through hole on the upper side of the support shell 8. By tightening the upper clamping nut 7 and pressing it on the bearing, a locking effect can be achieved, and the upper clamping nut 7 on the main shaft 6 can be rotated relative to the support shell 8 through the bearing.

[0028] The top surface of the flat die 1 in this embodiment is a plane, the pressure roller 2 is arranged at an angle, the angle between the axis of the pressure roller 2 and the top surface of the flat die 1 is α, the pinion 5 is a bevel gear, the top surface of the toothed part of the large gear 4 is parallel to the top surface of the flat die 1, and the transmission ratio of the large gear 4 and the pinion 5 is set to 1 / sinα.

[0029] When the main shaft 6 rotates, it drives the flat die 1 to rotate and drives the pressure roller 2 to revolve. Under the action of the main driving mechanism and the transmission gear set, the pressure roller 2 rotates and the pressing area of ​​the pressure roller 2 slides relative to the corresponding forming area of ​​the mold. The pressure roller 2 is a conical roller, and the difference between the linear velocity of the pressing area of ​​the conical roller and the corresponding linear velocity of the forming area of ​​the flat die 1 is consistent. The forming area of ​​the flat die 1 is the area that is rolled by the pressure roller 2. The forming area is provided with forming holes. The pressing area of ​​the conical roller when working is the area where a busbar of the conical surface closest to the flat die 1 is located. The linear speed of any point on the busbar is different from the linear speed of a point directly opposite to the flat die 1, so that the pressure roller 2 not only rolls but also slides. Moreover, the difference between the linear speeds of each point on the conical roller and the corresponding points on the flat die 1 is consistent. In this embodiment, the linear speed of the pressure roller 2 is greater than the linear speed of the flat die 1. The outer diameter of the pressure roller 2 is set to achieve a consistent linear speed difference between the pressure roller 2 and the flat die 1 in the forming area. The linear speed difference is a constant within the axial range of the pressure roller 2, which makes the axial wear of the conical roller tend to be consistent, thereby increasing the service life of the pressure roller 2.

[0030] Moreover, the linear speed difference will give the biomass material in the forming area a kneading force, which causes the biomass material to be kneaded before entering the forming hole, further crushing the biomass into fine particles, reducing the pressure required for extrusion, and the heat generated by friction increases the biomass temperature, which is conducive to softening the lignin in the biomass, thereby bringing better forming effects. The constant linear speed difference can be set by changing the outer diameter of the pressing roller 2 to adapt to the optimal process parameters corresponding to different biomass raw materials.

[0031] After starting the main drive motor 10, the main shaft 6 drives the flat die 1 and the pressure roller 2 to rotate through the pressure turntable 20, the large gear 4, and the small gear 5, and the rotation of the flat die 1 and the pressure roller 2 does not interfere with each other. Under the load working state, that is, during the continuous roll forming operation, since the linear speed of the pressure roller 2 is greater than the linear speed of the flat die 1, under the action of the sliding friction force, the pressure roller 2 will drive the flat die 1 to rotate, and the torque generated by the increased sliding friction force is fed back to the main shaft 6 through the pressure turntable 20 to achieve mechanical balance.

[0032] In the forming area, the flat die 1 and the pressure roller 2 maintain a consistent linear speed difference, so that the flat die 1 and the pressure roller 2 wear evenly, the density of the material forming particles can be consistent, and the life of the mold can be extended. Under the premise of producing particles with the same raw materials and the same forming density, a smaller aspect ratio than the mold of the existing production equipment can be used. The aspect ratio is the ratio of the axial length and the inner diameter of the forming hole. The smaller aspect ratio can reduce the axial length of the forming hole, thereby reducing the thickness of the flat die 1 and reducing the forming energy consumption. By setting the constant linear speed difference greater than the average linear speed difference between the pressure roller 2 and the flat die 1 of the existing equipment, a lower unit production capacity forming energy consumption can be achieved. The kneading force generated by the linear speed difference between the flat die 1 and the pressure roller 2 can knead the biomass into fine particles, so the requirements for the biomass crushing process are not high, which indirectly reduces the crushing energy consumption.

[0033] The spindle of the equipment in the prior art adopts a cantilever beam structure, which will cause the bearing close to the stressed side to be subjected to great stress. In addition, the uneven distribution of materials or the mixing of other impurities will cause pulse pressure due to pressure fluctuations, resulting in high lubrication costs and short bearing life. The equipment of the present invention can support the upper part of the spindle 6 through the support shell 8 in conjunction with the pressure roller shaft 3 and the pressure roller shaft mounting support 12, the main base 18 in conjunction with the main bearing 16 and the pressure-bearing turntable 20 to support the middle part of the spindle 6, and the main base 18 in conjunction with the lower clamping nut 19 to support the lower part of the spindle 6, which is stable and prevents the spindle 6 from forming a cantilever structure. The main bearing 16 is located in the middle of the spindle 6 and can withstand large axial and radial forces. In addition, the large impact force during the operation of the equipment can also be shared by the bearings at the upper and lower ends of the spindle 6, so the bearing life is longer.

[0034] The pressure roller 2 has no built-in bearing, and the support points of the pressure roller shaft 3 are located at both ends of the pressure roller shaft 3, which can withstand greater impact force and is far away from the forming area. It is less affected by the heat generated during the forming process, is easier to lubricate, and is easier to disassemble and assemble.

[0035] The large gear 4 and the small gear 5 can move relative to the main shaft 6. After the pressure roller 2, the gears and the corresponding parts are assembled as a whole, the gap between the flat die 1 and the pressure roller 2 can be quickly adjusted, and the assembly and disassembly can be quickly performed to improve the speed of mold replacement.

[0036] In other embodiments, a transmission connection structure for transmission connection between the ring die and the pressure roller can also be set on the ring die pellet machine. The ring die pellet machine includes a main shaft, a pressure roller and a ring die. The ring die is fixed, and the main shaft drives the pressure roller to revolve. An inner gear ring structure is provided at one end of the ring die, and a gear structure is provided on the pressure roller. The inner gear ring structure cooperates with the gear structure to form a transmission connection structure to make the pressure roller rotate when the pressure roller revolves.

[0037] In other embodiments, the pressing roller may also be a cylindrical pressing roller, in which case the axis of the pressing roller is parallel to the top surface of the flat die.

[0038] In other embodiments, a motor for driving the pressure roller shaft to rotate may also be separately provided, and the motor is transmission-connected to the outer end of the pressure roller shaft. The motor constitutes a driving mechanism for driving the pressure roller to rotate. In this case, a large gear and a small gear are no longer provided, and the pressure roller and the mold are no longer transmission-connected. In this case, the mold and the pressure roller are each configured with a driving mechanism.

[0039] In other embodiments, the pressure turntable can be fixed to the main base and separated from the main shaft. The main shaft does not drive the flat die to rotate, but the main shaft is fixed to the supporting shell, the large gear is fixed to the pressure turntable, and the outer end of the pressure roller shaft is no longer provided with a pressure roller shaft mounting support. When the main shaft rotates, it drives the supporting shell to rotate, and the support shell drives the pressure roller shaft to revolve, thereby causing the pressure roller and the small gear to revolve, and the small gear cooperates with the large gear to cause the pressure roller to rotate.

[0040] In other embodiments, a gear structure can also be set on the outer peripheral surface of the flat die, and a matching gear can be fixedly set on the main shell. The matching gear is connected to a power source through the matching gear and the gear structure. The power source drives the flat die to rotate through the matching gear and the gear structure, and then the flat die drives the main shaft to rotate. In this case, a main drive motor and a transmission box connected to the main shaft transmission are no longer provided.

[0041] In other implementations, the two wedge blocks may also be connected by bolts, with a bolt through hole being provided on one wedge block and a threaded hole for bolt connection being provided on the other wedge block, and the distance between the two wedge blocks may be changed by screwing the bolts.

[0042] Embodiment 2 of the die roller extrusion molding device of the present invention: This embodiment provides a drive mechanism arrangement different from that of the above-mentioned die roller extrusion molding device in Embodiment 1, such as Figure 5 As shown, the inner end of the pressure roller shaft penetrates into the upper shell 151 of the main shell, and the outer end of the pressure roller shaft is provided with a hydraulic motor 22. The hydraulic motor 22 constitutes a driving mechanism, which can directly drive the pressure roller shaft to rotate. At this time, the pressure roller shaft serves as a power input end. When the pressure roller shaft rotates, it drives the main shaft to rotate through the large gear and the small gear, and then drives the flat die to rotate. The hydraulic motor 22 serves as a power source. The power source inputs power through the pressure roller shaft. While making the pressure roller rotate, it also transmits power to the flat die to drive the flat die to rotate. At this time, the mold is connected to the pressure roller transmission and the pressure roller is equipped with a driving mechanism.

[0043] In other implementations, a servo motor and a reducer combination may be used to replace the hydraulic motor.

[0044] In other embodiments, the mold can also be fixed, and the pressure roller is not only equipped with a rotation drive mechanism for driving its rotation, but also equipped with a revolution drive mechanism for driving its revolution. The revolution drive mechanism can drive the pressure roller to revolve by driving the support shell to rotate. At this time, the mold and the pressure roller are no longer connected in transmission.

[0045] Embodiment 3 of the die roller extrusion molding device of the present invention: This embodiment provides a different arrangement of the pressure rollers and flat dies from the embodiment 1 of the die roller extrusion molding device, such as Figure 6 As shown, the roller shaft 3 is arranged horizontally, and the axes of the roller shaft 3, the roller 2 and the pinion 5 all extend horizontally. The surface of the molding area of ​​the flat die 1 is an outer conical surface, and the part with teeth on the large gear 4 is a bevel gear structure.

[0046] Embodiment 4 of the die roller extrusion molding device of the present invention: This embodiment provides a different arrangement of the pressure rollers and flat dies from the embodiment 1 of the die roller extrusion molding device, such as Figure 7 As shown, the surface of the molding area of ​​the flat die 1 is an inner conical surface, and the pressure roller 2 is arranged obliquely and adapted to the flat die 1.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A die-roller extrusion forming device, comprising a die and a roller, characterized in that, The mold and the pressure roller are each equipped with a driving mechanism, or the mold is transmission-connected to the pressure roller and one of them is equipped with a driving mechanism, or the mold is fixed and the pressure roller is equipped with a revolution driving mechanism for driving its revolution and a rotation driving mechanism for driving its rotation; the pressure roller is used to rotate under the drive of the corresponding driving mechanism and make each part of the material pressing area of ​​the pressure roller slide relative to the corresponding part of the molding area of ​​the mold.

2. The roll extrusion forming equipment according to claim 1, characterized in that, The pressing roller is a conical roller and the die is a flat die. When the pressing roller is driven to rotate, the difference between the linear speeds at various locations in the pressing area of ​​the conical roller and the corresponding linear speeds at various locations in the forming area of ​​the flat die is consistent.

3. The roll extrusion forming equipment according to claim 1 or 2, characterized in that, The transmission connection structure between the mold and the pressure roller includes a first gear coaxially arranged with the mold and a second gear coaxially arranged with the pressure roller. The first gear cooperates with the second gear to make the pressure roller rotate when the mold rotates or the pressure roller revolves, or to make the mold rotate or the pressure roller revolve when the pressure roller rotates. The difference between the linear velocity of each location in the pressing area of ​​the pressure roller and the corresponding linear velocity of each location in the molding area of ​​the mold is changed by changing the gear parameters of the first gear and the second gear.

4. The roll extrusion forming equipment according to claim 1, characterized in that, The mold is a flat mold. The mold roller extrusion molding equipment also includes a mounting base and a pressure roller shaft rotatably supported on the mounting base. The pressure roller is mounted on the pressure roller shaft. The mold is equipped with a driving mechanism and the driving mechanism is a main driving mechanism. The main driving mechanism includes a main shaft rotatably mounted on the mounting base. The flat mold is relatively fixed to the main shaft. The transmission connection structure between the mold and the pressure roller includes a first gear and a second gear meshing with each other. The first gear is mounted on the main shaft, and the second gear is mounted on the pressure roller shaft.

5. The roll extrusion forming equipment according to claim 4, characterized in that, The die roller extrusion molding equipment also includes a supporting shell, which is provided with a pressure roller shaft through hole for the pressure roller shaft to pass through and a main shaft through hole for the main shaft to pass through, and the first gear and the second gear are both located in the supporting shell.

6. The roll extrusion forming equipment according to claim 4 or 5, characterized in that, The main driving mechanism also includes a pressure-bearing turntable, the flat die is fixed on the pressure-bearing turntable, and the pressure-bearing turntable is fixed on the main shaft.

7. The roll extrusion forming equipment according to claim 1, characterized in that, The mold is a flat mold. The die roller extrusion molding equipment also includes a mounting base and a pressure roller shaft rotatably supported on the mounting base. The pressure roller is non-rotatably mounted on the pressure roller shaft. The mold is equipped with a driving mechanism and the driving mechanism is a main driving mechanism. The main driving mechanism includes a main shaft rotatably mounted on the mounting base. The flat mold is relatively fixed to the main shaft. The mounting base includes a main base and a pressure roller shaft mounting support. The pressure roller shaft mounting support is height-adjustably mounted on the main base to make the gap between the pressure roller and the flat mold adjustable.

8. The roll extrusion forming equipment according to claim 7, characterized in that, The transmission connection structure between the mold and the pressure roller includes a first gear and a second gear that are meshed with each other. The first gear is mounted on the main shaft to prevent rotation, and the second gear is mounted on the pressure roller shaft to prevent rotation. The mold roller extrusion molding equipment also includes a supporting shell, and the supporting shell is provided with a pressure roller shaft through hole for the pressure roller shaft to pass through and a main shaft through hole for the main shaft to pass through. The first gear and the second gear are both located in the supporting shell, and a first rotating support structure is provided between the pressure roller shaft and the hole wall of the pressure roller shaft through hole, and a second rotating support structure is provided between the first gear and the supporting shell, and the first gear is movably arranged on the main shaft in the axial direction.

9. The roll extrusion forming equipment according to claim 1 or 2, characterized in that, The die roller extrusion molding equipment also includes a pressure roller shaft and a pressure roller shaft rotation installation structure for rotatably installing the pressure roller shaft, and the pressure roller is non-rotatably installed on the pressure roller shaft.

10. The roll extrusion forming equipment according to claim 1 or 2, characterized in that, By changing the outer diameter of the pressure roller, the difference in linear velocity between each part of the material pressing area of the pressure roller and each corresponding part of the forming area of the mold is achieved.

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