Synchronous transmission molding powder extrusion tablet press

Abstract

The utility model discloses a synchronous transmission molding powder extrusion tablet press which comprises a rack and a heating cylinder installed on the inner wall of one side of the rack, an auger roller is rotatably installed in the heating cylinder, a molding powder discharging nozzle is arranged at the end, away from a material mixing box, of the heating cylinder, a shaft cover is fixed to the outer wall of one side of the rack, and the shaft cover is fixed to the outer wall of the other side of the rack. A speed reduction motor for driving the auger roller to rotate is installed on the outer wall of one side of the shaft cover, a material mixing box is fixed to the top end of the rack, a discharging port in the bottom end of the material mixing box communicates with a feeding port in the top end of the heating cylinder, and a double-shaft material mixing structure is arranged in the material mixing box. According to the utility model, the synchronous operation of premixing, extruding and tabletting is synchronously controlled by one motor, so that more compact cooperative work can be realized, and the material transfer and treatment time is shortened, thereby improving the production efficiency. And switching and adjustment among different operations do not need to be waited, so that the production time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic powder production equipment, and particularly relates to a plastic powder extrusion tablet press with synchronous transmission. Background Art

[0002] The function of a plastic powder extrusion tablet press is to process plastic powder into plastic products of various shapes through extrusion and tablet pressing. Its structure includes a feeding system, an extrusion system, a tablet pressing system, and a control system. The working principle is to transport plastic powder through the feeding system into the extrusion screw. After heating and melting, through the rotation of the extrusion screw and the pressure of the extrusion barrel, the melted plastic is extruded into the mold. For example, a plastic powder extrusion tablet press with synchronous transmission disclosed in the authorized publication number CN218196816U includes a frame with an extruder part, a tablet pressing part, and a conveying part. An extrusion screw is rotatably arranged on the extrusion part in the extrusion box body. Two pressing rollers are rotatably arranged on the tablet pressing part. A transmission shaft with one end drivingly connected to a motor is rotatably arranged on the frame on one side of the extrusion box body through a support frame. The front end of the transmission shaft is connected with a first gear, and the rear end is connected with two first bevel gears with opposite small ends. The end of the extrusion screw is connected with a second gear meshing with the first gear. Each end of the two pressing rollers is connected with a second bevel gear meshing with one of the two first bevel gears respectively. Through the cooperation of the transmission shaft and each pair of gears, the processes of melting extrusion and tablet pressing forming can always be carried out synchronously. However, in this technical solution, various plastic powders, granulations, etc. are directly put into the extrusion box body, and various materials are not pre-mixed. It is necessary to synchronously carry out processes such as melting, mixing, and extrusion in the extrusion box body. Because the materials are not pre-mixed, it may lead to uneven distribution of different materials, resulting in uneven melting and mixing of materials during the extrusion process, affecting the quality and performance of the final product. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a plastic powder extrusion tablet press with synchronous transmission, and a double-shaft mixing mechanism with integral linkage is added to the extrusion tablet press to uniformly mix different materials in advance and then carry out extrusion and tablet pressing, so as to solve the problems put forward in the above background art.

[0004] To achieve the above object, the present utility model provides the following technical solutions: A plastic powder extrusion press with synchronous transmission, including a frame and a heating cylinder installed on the inner wall of one side of the frame. A screw roller is rotatably installed inside the heating cylinder. A shaft cover is fixed on the outer wall of one side of the frame. A reduction motor for driving the screw roller to rotate is installed on the outer wall of one side of the shaft cover. A mixing box is fixed on the top of the frame. The discharge port at the bottom of the mixing box is communicated with the feed port at the top of the heating cylinder. A plastic powder discharge nozzle is provided at one end of the heating cylinder away from the mixing box. A double-shaft mixing structure is arranged inside the mixing box. A rear belt pulley transmission structure for power connection is installed between the double-shaft mixing structure and the screw roller. A U-shaped frame is fixed on the inner wall of the other side inside the frame. A lower pressing roller is rotatably installed on one side inside the U-shaped frame. A horizontal shaft transmission component is installed on the outer wall of one side of the U-shaped frame. The horizontal shaft transmission component is used to transmit the rotational power of the double-shaft mixing structure to the lower pressing roller. Pressing roller double-shaft transfer structures are installed on the outer walls of both sides of the U-shaped frame. An upper pressing roller is installed at the movable end of the pressing roller double-shaft transfer structure. A PLC control panel electrically connected to the reduction motor and the input end of the pressing roller double-shaft transfer structure is installed on the outer wall of one side of the shaft cover.

[0005] Preferably, the double-shaft mixing structure includes mixing shafts rotatably installed on both sides inside the mixing box, and a pair of gear transmission structures for connecting the two mixing shafts. One end of one of the mixing shafts is power-connected to the screw roller through a rear belt pulley transmission structure.

[0006] Preferably, the rear belt pulley transmission structure includes a driven wheel installed at one end of one of the mixing shafts and a driving wheel installed at one end of the surface of the screw roller. A crawler is installed between the driving wheel and the driven wheel.

[0007] Preferably, the pair of gear transmission structures includes synchronous gears fixed at the ends of the two mixing shafts. The two synchronous gears mesh with each other.

[0008] Preferably, the horizontal shaft transmission component includes a right-angle shaft frame fixed on the outer wall of one side of the U-shaped frame, and a transmission shaft rotatably installed on the outer wall of one side of the right-angle shaft frame. A bevel gear transmission structure is installed at one end of the transmission shaft close to the lower pressing roller. A front belt pulley transmission structure for power connection with one of the mixing shafts is installed at the other end of the transmission shaft.

[0009] Preferably, the bevel gear transmission structure includes a driving bevel gear installed at the top of the transmission shaft and a driven bevel gear installed at one end of the lower pressing roller. The driving bevel gear and the driven bevel gear mesh with each other.

[0010] Preferably, the double-axis transfer structure of the pressing roller includes an X-axis cylinder installed on the outer walls of both sides of the U-shaped frame, and a right-angle arm installed at the top end of the piston rod of the X-axis cylinder. A Z-axis cylinder is installed on the outer wall of one side of the right-angle arm, and a support seat is fixed to the bottom end of the piston rod of the Z-axis cylinder. The input ends of the X-axis cylinder and the Z-axis cylinder are electrically connected to the output end of the PLC control panel.

[0011] Preferably, a support plate is fixed to the bottom end of the support seat, and the upper pressing roller is rotatably installed between the two support plates in the Y-axis direction.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the mutually cooperating structures such as the heating cylinder and the mixing tank, various materials such as proportioned powder granules, dyed granules, resin particles, and plastic powder are thrown into the mixing tank. The rotational power of the auger roller is transmitted to the double-axis mixing structure in the mixing tank, and the double-axis mixing structure pre-mixes various materials such as powder granules, dyed granules, resin particles, and plastic powder, pre-eliminating the layering and unevenness between the materials, improving the quality and performance of the product. When the material is extruded through the plastic powder discharge nozzle at the end of the heating cylinder, the material strip passes through between the upper pressing roller and the lower pressing roller to complete the tablet pressing operation. This device synchronously controls the pre-mixing, extrusion, and tablet pressing operations through one motor, enabling closer collaborative work, reducing the time for material transfer and processing, thereby improving production efficiency. There is no need to wait for the switching and adjustment between different operations, saving production time and improving the overall efficiency of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the front view structural schematic diagram of the present utility model;

[0014] Figure 2 is the three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 3 is the three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 4 is the three-dimensional structural schematic diagram of the present utility model;

[0017] In the figure: 1. Frame; 2. Shaft cover; 201. PLC control panel; 3. Heating cylinder; 301. Plastic powder discharge nozzle; 4. Screw roller; 5. Reducing motor; 6. Mixing box; 601. Mixing shaft; 602. Opposite gear transmission structure; 7. Front pulley transmission structure; 8. Rear pulley transmission structure; 9. U-shaped frame; 10. Press roller double-axis transfer structure; 1001. X-axis cylinder; 1002. Right-angle arm; 1003. Z-axis cylinder; 1004. Support seat; 1005. Support plate; 11. Upper press roller; 12. Right-angle shaft frame; 13. Transmission shaft; 1301. Bevel gear transmission structure; 14. Lower press roller. Detailed implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-4 , an embodiment provided by the present invention: A plastic powder extrusion press with synchronous transmission, including a frame 1 and a heating cylinder 3 installed on the inner wall of one side of the frame 1. A screw roller 4 is rotatably installed inside the heating cylinder 3. A shaft cover 2 is fixed on the outer wall of one side of the frame 1. A reducing motor 5 for driving the screw roller 4 to rotate is installed on the outer wall of one side of the shaft cover 2. A mixing box 6 is fixed on the top end of the frame 1. Various materials such as powder granulation, dyed particles, resin particles, and plastic powder after proportioning are thrown into the mixing box 6. The discharge port at the bottom end of the mixing box 6 and the feed port at the top end of the heating cylinder 3 are interconnected. A plastic powder discharge nozzle 301 is provided at one end of the heating cylinder 3 away from the mixing box 6. The reducing motor 5 drives the screw roller 4 to rotate, and the plastic powder is heated, melted, and extruded by the heating cylinder 3 and the screw roller 4;

[0020] A double-axis mixing structure is arranged inside the mixing box 6. A rear pulley transmission structure 8 for power connection is installed between the double-axis mixing structure and the screw roller 4. Various materials such as powder granulation, dyed particles, resin particles, and plastic powder are pre-mixed by the double-axis mixing structure. The mixed material enters the heating cylinder 3, and is heated, melted, and extruded by the heating cylinder 3 and the screw roller 4. A U-shaped frame 9 is fixed on the inner wall of the other side inside the frame 1. A lower press roller 14 is rotatably installed on one side inside the U-shaped frame 9. A horizontal shaft transmission assembly is installed on the outer wall of one side of the U-shaped frame 9. The horizontal shaft transmission assembly is used to transmit the rotation power of the double-axis mixing structure to the lower press roller 14;

[0021] On the outer walls on both sides of the U-shaped frame 9, a double-axis transfer structure 10 for pressure rollers is installed. An upper pressure roller 11 is installed at the movable end of the double-axis transfer structure 10 for pressure rollers. On the outer wall of one side of the shaft cover 2, a PLC control panel 201 electrically connected to the input end of the deceleration motor 5 and the double-axis transfer structure 10 for pressure rollers is installed. After the material is extruded through the plastic powder discharge nozzle 301 at the end of the heating cylinder 3, the strip passes through between the upper pressure roller 11 and the lower pressure roller 14. Immediately, the staff controls the operation of the double-axis transfer structure 10 for pressure rollers through the deceleration motor 5, thereby controlling the position of the upper pressure roller 11 on the X-axis and Z-axis, so that the upper pressure roller 11 and the lower pressure roller 14 press the strip, and thus the strip is pressed into a flat shape;

[0022] The double-axis mixing structure includes mixing shafts 601 rotatably installed on both sides inside the mixing box 6, and a pair of gear transmission structures 602 for connecting the two mixing shafts 601. The pair of gear transmission structures 602 includes synchronous gears fixed to the ends of the two mixing shafts 601, and the two synchronous gears mesh with each other;

[0023] One end of one of the mixing shafts 601 is power-connected to the auger roller 4 through a rear belt drive structure 8. The rear belt drive structure 8 includes a driven wheel installed at one end of one of the mixing shafts 601 and a driving wheel installed on the surface of one end of the auger roller 4. A crawler is installed between the driving wheel and the driven wheel. During mixing, the rotational power of the auger roller 4 is transmitted to one of the mixing shafts 601 through the rear belt drive structure 8, and the two mixing shafts 601 are power-combined through the pair of gear transmission structures 602, so as to mix the materials in the mixing box 6 by using the mixing shafts 601. By pre-mixing evenly, the melting points and melting temperatures of different materials are closer, which is beneficial to the stability of temperature control. The mixing mechanism can provide better heat conduction and heat balance, so that different materials are more evenly melted during the extrusion process, reduce the temperature gradient, and improve the quality and consistency of the product;

[0024] The horizontal shaft transmission assembly includes a right-angle shaft frame 12 fixed to the outer wall of one side of the U-shaped frame 9, and a transmission shaft 13 rotatably installed on the outer wall of one side of the right-angle shaft frame 12. A bevel gear transmission structure 1301 is installed at one end of the transmission shaft 13 close to the lower pressure roller 14, and a front belt drive structure 7 for power-connecting to one of the mixing shafts 601 is installed at the other end of the transmission shaft 13. The bevel gear transmission structure 1301 includes a driving bevel gear installed at the top of the transmission shaft 13 and a driven bevel gear installed at one end of the lower pressure roller 14, and the driving bevel gear and the driven bevel gear mesh with each other;

[0025] One of the mixing shafts 601 is power-connected to the transmission shaft 13 through the front pulley transmission structure 7. Then, the transmission shaft 13 drives the lower pressing roller 14 to rotate through the bevel gear transmission structure 1301. The upper pressing roller 11 and the lower pressing roller 14 actively perform the operation of pressing and sending out the cooled and formed strip. Traditional extrusion tablet presses usually require multiple motors and transmission devices to drive different operations, while integrating them into one motor can simplify the equipment structure and reduce the use of components and connectors.

[0026] The double-axis transfer structure 10 of the pressing roller includes the X-axis cylinder 1001 installed on the outer walls on both sides of the U-shaped frame 9, and the right-angle arm 1002 installed at the top of the piston rod of the X-axis cylinder 1001. The Z-axis cylinder 1003 is installed on the outer wall of one side of the right-angle arm 1002. The bottom end of the piston rod of the Z-axis cylinder 1003 is fixed with the support seat 1004. The input ends of the X-axis cylinder 1001 and the Z-axis cylinder 1003 are electrically connected to the output end of the PLC control panel 201. The bottom end of the support seat 1004 is fixed with the support plate 1005. The upper pressing roller 11 is rotatably installed between the support plates 1005 in the Y-axis direction.

[0027] The staff controls the X-axis cylinder 1001 and the Z-axis cylinder 1003 to work through the reduction motor 5, so as to control the spatial position of the upper pressing roller 11 and better adjust the pressing force of the upper pressing roller 11 on the strip and the lower pressing roller 14.

[0028] When the embodiment of the present application is in use, first, the staff throws various materials such as proportioned powder granules, dyed granules, resin particles, and plastic powder into the mixing box 6. Subsequently, the staff starts the operation of the reduction motor 5 through the PLC control panel 201. Then, the reduction motor 5 drives the auger roller 4 to rotate. The heating cylinder 3 and the auger roller 4 heat, melt, and extrude the plastic powder. During this process, the rotational power of the auger roller 4 is transmitted to the double-shaft mixing structure in the mixing box 6. The double-shaft mixing structure pre-mixes various materials such as powder granules, dyed granules, resin particles, and plastic powder. The mixed material enters the heating cylinder 3, and the heating cylinder 3 and the auger roller 4 heat, melt, and extrude it. By pre-mixing different materials, this equipment can ensure that they are fully and evenly mixed. The double-shaft design of the double-shaft mixing structure can provide better stirring and mixing effects, making the distribution of different materials more uniform, helping to eliminate the layering and unevenness between materials, and improving the quality and performance of the product. When the material is extruded through the plastic powder discharge nozzle 301 at the end of the heating cylinder 3, the strip passes through between the upper pressure roller 11 and the lower pressure roller 14. Immediately, the staff controls the operation of the pressure roller double-shaft transfer structure 10 through the reduction motor 5, thereby controlling the position of the upper pressure roller 11 on the X-axis and Z-axis so that the upper pressure roller 11 and the lower pressure roller 14 can press the strip, thus pressing the strip into a flat shape. Since the double-shaft mixing structure is power-connected to the horizontal axis transmission component through the front pulley transmission structure 7, the rotational power of the double-shaft mixing structure is transmitted to the lower pressure roller 14 through the horizontal axis transmission component, causing the lower pressure roller 14 to rotate actively, thereby actively sending out the strip pressed by itself and the upper pressure roller 11, realizing the synchronous progress of extrusion and tablet pressing operations. This equipment can achieve more closely coordinated work by synchronously controlling the pre-mixing, extrusion, and tablet pressing operations with one motor, reducing the time for material transfer and processing, thereby improving production efficiency. There is no need to wait for the switching and adjustment between different operations, saving production time and improving the overall efficiency of the production line.

Claims

1. A synchronously driven plastic powder extrusion tablet press, characterized in that: The machine comprises a frame (1) and a heating cylinder (3) installed on the inner wall of one side of the frame (1), an auger roller (4) is rotatably installed inside the heating cylinder (3), a shaft cover (2) is fixed on the outer wall of one side of the frame (1), a reduction motor (5) for driving the auger roller (4) to rotate is installed on the outer wall of one side of the shaft cover (2), a mixing box (6) is fixed on the top of the frame (1), a discharge port at the bottom end of the mixing box (6) and a feed port at the top end of the heating cylinder (3) are connected to each other, a plastic powder discharge nozzle (301) is arranged at one end of the heating cylinder (3) away from the mixing box (6), a double-axis mixing structure is arranged inside the mixing box (6), and a power transmission device (301) is installed between the double-axis mixing structure and the auger roller (4). A rear pulley transmission structure (8) is connected, a U-shaped frame (9) is fixed on the inner wall of the other side of the frame (1), a lower pressure roller (14) is rotatably installed on one side of the U-shaped frame (9), a transverse axis transmission component is installed on the outer wall of one side of the U-shaped frame (9), and the transverse axis transmission component is used to transmit the rotational power of the double-axis mixing structure to the lower pressure roller (14), a pressure roller double-axis transfer structure (10) is installed on the outer walls of both sides of the U-shaped frame (9), and an upper pressure roller (11) is installed at the movable end of the pressure roller double-axis transfer structure (10), and a PLC control panel (201) electrically connected to the reduction motor (5) and the input end of the pressure roller double-axis transfer structure (10) is installed on the outer wall of one side of the shaft cover (2).

2. The synchronously driven plastic powder extrusion tablet press according to claim 1, characterized in that: The double-shaft mixing structure comprises mixing shafts (601) rotatably mounted on both sides of a mixing box (6), and a pair of gear transmission structures (602) for connecting the two mixing shafts (601), wherein one end of one of the mixing shafts (601) is connected to the auger roller (4) via a rear pulley transmission structure (8) for power connection.

3. The synchronously driven plastic powder extrusion tablet press according to claim 2, characterized in that: The rear pulley transmission structure (8) comprises a driven wheel installed at one end of one of the mixing shafts (601) and a driving wheel installed at one end of the surface of the auger roller (4), and a crawler belt is installed between the driving wheel and the driven wheel.

4. The synchronously driven plastic powder extrusion tablet press according to claim 2, characterized in that: The pair of gear transmission structures (602) comprises synchronous gears fixed at the ends of the two mixing shafts (601), and the two synchronous gears are meshed with each other.

5. The synchronously driven plastic powder extrusion tablet press according to claim 2, characterized in that: The transverse axis transmission assembly comprises a right-angle shaft frame (12) fixed on the outer wall of one side of the U-shaped frame (9), and a transmission shaft (13) rotatably mounted on the outer wall of one side of the right-angle shaft frame (12), one end of the transmission shaft (13) close to the lower pressure roller (14) is mounted with a bevel gear transmission structure (1301), and the other end of the transmission shaft (13) is mounted with a front pulley transmission structure (7) for power connection with one of the mixing shafts (601).

6. A synchronously driven plastic powder extrusion tablet press according to claim 5, characterized in that: The bevel gear transmission structure (1301) comprises a driving bevel gear installed at the top end of the transmission shaft (13) and a driven bevel gear installed at one end of the lower pressure roller (14), and the driving bevel gear and the driven bevel gear are meshed with each other.

7. The synchronously driven plastic powder extrusion tablet press according to claim 1, characterized in that: The pressure roller dual-axis transfer structure (10) comprises an X-axis cylinder (1001) mounted on the outer walls of both sides of the U-shaped frame (9), and a right-angle arm (1002) mounted on the top of the piston rod of the X-axis cylinder (1001), a Z-axis cylinder (1003) mounted on the outer wall of one side of the right-angle arm (1002), a support seat (1004) fixed to the bottom end of the piston rod of the Z-axis cylinder (1003), and the input ends of the X-axis cylinder (1001) and the Z-axis cylinder (1003) are electrically connected to the output end of the PLC control panel (201).

8. The synchronously driven plastic powder extrusion tablet press according to claim 7, characterized in that: A support plate (1005) is fixed to the bottom end of the support seat (1004), and the upper pressing roller (11) is rotatably mounted between the support plates (1005) in two Y-axis directions.

Images