Extruder for producing plastic round wires

Abstract

The invention discloses an extruder for producing plastic round wires, and relates to the field of molding of plastic state materials or materials, the extruder comprises a main body base, an extrusion structure is arranged on one side of the top of the main body base, a vibration mechanism is arranged on one side, located on the extrusion structure, of the top of the main body base, and a necking mechanism is arranged on the position, located on the extrusion structure, of the top of the vibration mechanism; a conveying pipe is arranged on the side, facing the output end of the extrusion structure, of the necking mechanism. A linkage mechanism is arranged between the vibration mechanism and the necking mechanism and comprises a gear block which movably penetrates through the necking mechanism and is rotationally connected with the necking mechanism, a cam plate is arranged at the bottom of the gear block and movably penetrates through the vibration mechanism, and a fixed bottom plate is arranged at the position, located at the bottom of the cam plate, in the vibration mechanism; and a plurality of limiting extrusion blocks for limiting the vibration amplitude of the vibration mechanism are movably arranged on the bottom surface of the fixed bottom plate. The extrusion hole diameter is adjusted according to the round wire size requirement, meanwhile, longitudinal vibration with the corresponding amplitude is generated in a linkage mode, and plastic particles are evenly distributed.

Description

Technical Field

[0001] This invention relates to the field of molding materials in a plastic state, and more particularly to an extruder for producing plastic filaments. Background Technology

[0002] Traditional plastic filament production relies mainly on fixed dies for extrusion. Adjusting the orifice diameter requires stopping the machine to replace the die, resulting in low production efficiency and high costs. In addition, during the extrusion process, the filament diameter is prone to fluctuations due to temperature gradients and uneven shear stress, leading to uneven forming. This is especially true when producing micro filaments (diameter <1mm), where the diameter deviation rate may exceed 5%, making it difficult to meet high precision requirements.

[0003] For example, Chinese invention patent with authorization announcement number CN202510746835.X discloses a plastic extruder. This equipment processes plastic granules through multiple steps during feeding, and then the first shell conveys the plastic granules to the machine body for uniform extrusion. However, this equipment cannot output a fixed aperture and cannot adjust the aperture size in real time according to different sizes of round wires. This results in the need to stop the equipment for replacement when producing round wires of different sizes, reducing efficiency and increasing costs. At the same time, the uniform extrusion by the machine body at the end can easily lead to uneven distribution of plastic granules during extrusion, thereby reducing the quality of round wire forming. Summary of the Invention

[0004] To address the problems of existing extruders for producing plastic round filaments, which cannot adjust the output orifice size according to different filament sizes, thus reducing production efficiency, and also cause uneven distribution of extruded plastic particles, thus reducing the quality of the finished product, this invention provides an extruder for producing plastic round filaments.

[0005] The extruder for producing plastic round filaments provided by this invention adopts the following technical solution:

[0006] An extruder for producing plastic round filaments includes a main base, an extrusion structure on one side of the top of the main base, a vibration mechanism for vibrating the extruded round filaments on the side of the extrusion structure on the top of the main base, a necking mechanism for controlling the size of the discharge orifice of the round filaments on the top of the vibration mechanism at the position of the extrusion structure, and a conveying pipe for providing displacement redundancy for the necking mechanism on the side of the necking mechanism facing the output end of the extrusion structure.

[0007] A linkage mechanism is provided between the vibration mechanism and the narrowing mechanism. The linkage mechanism includes a gear block that is movably inserted through the narrowing mechanism and rotatably connected. A cam plate is provided at the bottom of the gear block that is movably inserted through the vibration mechanism. A fixed base plate is provided at the bottom of the cam plate in the vibration mechanism. Multiple limiting extrusion blocks that limit the vibration amplitude of the vibration mechanism are movably arranged on the bottom surface of the fixed base plate.

[0008] By adopting the above technical solution, the extrusion structure continuously outputs pre-extruded round wires, which then enter the necking mechanism. The necking mechanism reduces the diameter of the extruded round wire, thus performing secondary extrusion until the required size is achieved. Simultaneously, a vibration mechanism provides vibration to the necking mechanism, so that the round wire is subjected to longitudinal vibration force during the secondary extrusion. This force is distributed within the necking mechanism, improving the uniformity of particle distribution and avoiding particle interference during the secondary extrusion. Furthermore, the gear block and cam plate connect the necking mechanism and the vibration mechanism respectively, allowing the vibration mechanism to adjust with the necking mechanism, thereby synchronously changing the vibration amplitude and improving the quality of the round wire forming.

[0009] Preferably, the vibration mechanism includes a support base fixed on the top of the main base located on one side of the extrusion structure. The support base has an installation cavity inside. A single-sided cam rod is rotatably arranged in the middle of the installation cavity. A lower rotating block is fixed in the middle of the single-sided cam rod. A connecting plate is rotatably connected to the top of the lower rotating block. An upper rotating block is rotatably connected to the top of the connecting plate. A transmission seat is rotatably connected to both sides of the side surface of the upper rotating block.

[0010] By adopting the above technical solution, the mounting cavity is opened inside the support base, thereby providing installation space for the rotation of the single-sided cam rod. The rotation of the single-sided cam rod drives the lower rotating block to rotate around the single-sided cam rod. As the lower rotating block rotates, it applies a pushing and pulling force to the bottom of the connecting plate, and the top of the connecting plate connects to the upper rotating block, thereby causing the connecting plate to swing in a swinging state, and then applying a reciprocating pushing and pulling force to the upper connecting block, so that the transmission seat makes a longitudinal lifting and lowering movement.

[0011] Preferably, a vibrating fan plate is movably inserted into the mounting cavity at the top of the support base, and limiting cylinders are fixedly provided on both sides of the vibrating fan plate in the mounting cavity. First contraction springs are fixedly provided on both sides of the bottom of the vibrating fan plate, and the bottoms of the two first contraction springs are fixedly connected to the bottom of the limiting cylinders.

[0012] By adopting the above technical solution, the vibrating fan plate is longitudinally inserted and installed on the top of the support base. At the same time, it is subjected to the rebound force provided by the first contraction springs on both sides, thereby driving the vibrating fan plate to move longitudinally back and forth on the top of the support base to assist in providing vibration force. The two first contraction springs are fixed in the limiting cylinder, thereby limiting the rebound direction of the vibrating fan plate and preventing deviation.

[0013] Preferably, an annular groove is formed in the middle of the lower end face of the vibrating fan plate, and a limiting protrusion is fixed in the middle of the annular groove. The outer surface of the transmission seat is movably inserted into the annular groove of the vibrating fan plate. A limiting cavity is formed inward on the top of the transmission seat, which is movably inserted into the limiting protrusion. A second contraction spring is fixed on the annular upper end face of the limiting protrusion in the limiting cavity. The top of the second contraction spring is fixedly connected to the top of the inner wall of the limiting cavity.

[0014] By adopting the above technical solution, the opening of the annular groove of the vibrating fan plate provides an insertion space for the insertion of the top of the transmission seat and longitudinally limits the insertion of the transmission seat. At the same time, the limiting protrusion is inserted into the limiting cavity, and the second retraction spring located in the limiting cavity provides a rebound force for the limiting protrusion and the transmission seat. When the transmission seat moves longitudinally back and forth, it drives the vibrating fan plate to move synchronously and rapidly back and forth, thereby causing the vibrating fan plate to apply vibration force to the narrowing mechanism.

[0015] Preferably, the constriction mechanism includes a constriction housing abutting against the top surface of the vibrating fan plate. The constriction housing has a through-hole oblique constriction inlet at the position of the conveying pipe. The oblique constriction inlet extends into a rotating groove inside the constriction housing. Multiple mechanical iris structures are fixedly arranged around the rotating groove. A first gear rod rotatably connected to the multiple mechanical iris structures is rotatably arranged in the middle of the rotating groove. A linkage cavity is opened on one side of the first gear rod inside the constriction housing. A second gear surface extends into the first gear rod rotatably in the linkage cavity. The second gear surface is rotatably connected to a gear block.

[0016] By adopting the above technical solution, the constricted shell is abutted against the vibrating fan plate, so that when the vibrating fan plate vibrates longitudinally, it receives the vibration and transmits the vibration to the internal circular wire. The opening of the rotating groove provides a connection space for the installation of the mechanical iris structure and the meshing of the mechanical iris structure with the first gear rod. The linkage cavity is connected to the rotating groove, providing an installation space for the rotational connection of the second gear surface and the gear block.

[0017] Preferably, the mechanical iris structure includes a fixed outer shell fixed to one side of the inner wall of the rotating groove, a guide base plate fixed to one side of the fixed outer shell, a drive ring rotatably disposed between the fixed outer shell and the guide base plate, the outer surface of the drive ring meshing with a first gear rod, and an iris blade unfolding between the drive ring and the guide base plate.

[0018] By adopting the above technical solution, the fixed shell and the guide base plate are fixedly connected to form an integral frame, which is fixed in the rotating groove. Then, the drive ring meshes with the first gear rod to rotate, causing the iris blade to extend and contract in the center between the fixed shell and the guide base plate, thereby adjusting the diameter of the channel for the output of the circular wire.

[0019] Preferably, a plurality of linkage rods are fixedly provided at the bottom of the gear block, and the bottom of the plurality of linkage rods all penetrate through the vibrating fan plate and are connected to the cam plate in the mounting cavity. A fixed base plate is fixedly provided on the side surface of the vibrating fan plate at the bottom of the cam plate, and the fixed base plate and the vibrating fan plate are clamped at the upper and lower ends of the cam plate.

[0020] By adopting the above technical solution, multiple linkage rods move through the vibrating fan plate, thereby connecting the gear block and the cam plate, and making the whole formed by the gear block and the cam plate move up and down on the surface of the vibrating fan plate to prevent misalignment. The fixed base plate is fixed on one side of the bottom surface of the vibrating fan plate, thereby clamping the cam plate and keeping the cam plate in a horizontal rotation state.

[0021] Preferably, the bottom surface of the fixed base plate is provided with a plurality of movable grooves, each of which is movably inserted into a plurality of limiting extrusion blocks. Each of the plurality of limiting extrusion blocks is fixedly provided with an extension spring on the side facing the fixed base plate, and the side of each of the plurality of extension springs away from the limiting extrusion blocks is fixedly connected to the surface of the fixed base plate.

[0022] By adopting the above technical solution, multiple moving slots are opened on the bottom surface of the fixed base plate, thereby providing moving channels for the movement of multiple limiting extrusion blocks and limiting the movement of the limiting extrusion blocks. The limiting extrusion blocks move in from outside the moving slots, thereby applying pressure to the extension spring. When the limiting extrusion blocks lose their thrust, the extension spring rebounds and drives the limiting extrusion blocks to reset.

[0023] Preferably, a first motor is provided on one side of the outer surface of the support base, and the output end of the first motor passes through the mounting cavity and is fixedly connected to one end of the single-sided cam rod. A second motor is provided on one side of the outer surface of the constricted housing, and the output end of the second motor passes through the rotating groove and is fixedly connected to the first gear rod.

[0024] By adopting the above technical solution, the first motor provides power for the rotation of the single-sided cam rod, thereby causing the single-sided cam rod to rotate and drive the transmission seat to move up and down. The second motor provides power for the rotation of the first gear rod, thereby causing the first gear rod to rotate and drive multiple iris blades to extend, reducing the extrusion diameter of the round wire. At the same time, the linkage gear block is driven to rotate synchronously.

[0025] Preferably, a connecting pipe is provided on the side of the extrusion structure away from the constriction shell, a feeding structure is connected to the top of the connecting pipe, and a roller stirring device is provided at the other end of the connecting pipe relative to the extrusion structure.

[0026] By adopting the above technical solution, the connecting pipeline connects the feeding structure and the roller mixing device, thereby conveying the material into the extrusion structure for mixing and extrusion, thereby extruding round wires and conveying them into the conveying pipe.

[0027] In summary, the present invention has at least one of the following beneficial technical effects:

[0028] 1. The first gear rod drives multiple drive rings to rotate, causing the iris blades to move in an arc along the surface of the guide plate, thus shrinking and expanding in a circular shape, thereby adjusting the diameter of the extrusion orifice of the round wire. At the same time, the rotation of the single-sided cam rod drives the transmission seat to move back and forth, so that the vibrating fan plate is in a state of rapid reciprocating vibration, and the vibration force is applied to the surface of the constriction shell, applying low-frequency mechanical vibration to the round wire input into the constriction shell, reducing the extrusion pressure and improving the uniformity of the round wire;

[0029] 2. By meshing with the gear block through the second gear surface, power transmission is formed, causing the cam plate to rotate and engage with multiple limiting extrusion blocks in a squeezing and disengaging relationship. When the cam plate squeezes with the limiting extrusion blocks, the limiting extrusion blocks are pushed out of the moving groove, thereby increasing the distance between the transmission seat and the bottom of the support base, thus increasing the moving distance of the transmission seat and increasing the vibration amplitude of the support base. When the cam plate disengages from the limiting extrusion blocks, the vibration amplitude of the support base decreases. When adjusting the diameter of the round wire extrusion orifice, the vibration force on the constriction shell is adjusted to the synchronous amplitude, thereby smoothing the round wire extrusion process and avoiding the secondary uneven distribution of round wires caused by the mismatch of vibration amplitude. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of an explosion inside the vibration mechanism of the present invention;

[0032] Figure 3 This is a schematic diagram of the single-sided cam rod structure connection of the present invention;

[0033] Figure 4 This is an exploded view of the linkage mechanism of the present invention;

[0034] Figure 5 This is a schematic diagram showing the installation of the linkage mechanism of the present invention within the vibration mechanism;

[0035] Figure 6 This is a side sectional view of the support base of the present invention;

[0036] Figure 7 This is a schematic diagram of the connection of the mounting cavity linkage mechanism of the present invention;

[0037] Figure 8 This is a schematic diagram of the mechanical iris structure of the present invention in an explosion.

[0038] Reference numerals: 1. Main base; 2. Extruded structure;

[0039] 3. Vibration mechanism; 31. Support base; 32. Limiting cylinder; 33. Mounting cavity; 34. Single-sided cam rod; 35. Lower rotating block; 36. Connecting plate; 37. Upper rotating block; 38. Transmission seat; 39. First contraction spring; 310. Vibrating fan plate; 311. Limiting cavity; 312. Limiting protrusion; 313. Second contraction spring;

[0040] 4. Narrowing mechanism; 41. Narrowing housing; 42. Inclined narrowing inlet; 43. First gear rod; 44. Second gear surface; 45. Rotating groove;

[0041] 46. ​​Mechanical iris structure; 461. Fixed outer shell; 462. Drive ring; 463. Iris blade; 464. Guide base plate;

[0042] 47. Linkage cavity;

[0043] 5. Linkage mechanism; 51. Gear block; 52. Linkage rod; 53. Cam plate; 54. Fixed base plate; 55. Limiting and pressing block; 56. Moving groove; 57. Extension spring;

[0044] 6. Connecting pipeline; 7. Roller mixing device; 8. Feeding structure; 9. First motor; 10. Second motor; 11. Conveying pipe. Detailed Implementation

[0045] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0046] This invention discloses an extruder for producing plastic round filaments.

[0047] Reference Figure 1 , Figure 6 , Figure 7 An extruder for producing plastic round filaments includes a main base 1. An extrusion structure 2 is fixedly provided in the middle of the upper end face of the main base 1. The extrusion structure 2 is composed of an outer shell, a heating coil, and an internal stirring roller rotatably connected. A roller stirring device 7 is fixedly provided on one side of the extrusion structure 2 on the upper end face of the main base 1. A connecting pipe 6 is provided between the extrusion structure 2 and the roller stirring device 7. The output end of the roller stirring device 7 passes through the connecting pipe 6 and is fixedly connected to the stirring roller of the extrusion structure 2, thereby driving the stirring roller to rotate. A feeding structure 8 is connected in the middle of the upper end face of the connecting pipe 6.

[0048] The feeding structure 8 is responsible for pouring the external plastic granules into the connecting pipe 6. Then, the roller stirring device 7 drives the stirring roller of the extrusion structure 2 to rotate. The roller surface texture stirs and extrudes the plastic granules against the inner wall of the extrusion structure 2 shell, generating heat through friction. At the same time, it absorbs the heat transferred by the heating ring outside the barrel, and the temperature gradually rises to the melting point. Then, the melt gradually fills the screw groove, completely converting the material into a molten state, and it is discharged from the extrusion port of the extrusion structure 2 shell through the screw extrusion method.

[0049] Multiple conveying pipes 11 are glued to the upper surface of the main base 1 on the side of the extrusion structure 2 away from the connecting pipe 6. Each conveying pipe 11 is sealed to the extrusion end of the extrusion structure 2. Each conveying pipe 11 is made of fluororubber, with a high temperature resistance range of 200-300℃ and a hardness range of 60-90 Shore A, and also has a certain degree of resilience.

[0050] The necking mechanism 4 includes a necking shell 41 fixed at one end of multiple conveying pipes 11 away from the extrusion structure 2. The necking shell 41 is provided with oblique necking inlets 42 at the positions of multiple conveying pipes 11. The oblique necking inlets 42 are tapered from the outside to the inside, which initially reduces the diameter range, thereby providing auxiliary shrinkage and guidance for the round filaments extruded by the extrusion structure 2. Multiple oblique necking inlets 42 penetrate the other side surface of the necking shell 41, and the necking shell 41 is connected to the external forming and post-processing structure at the through end of the oblique necking inlet 42 to complete the subsequent water cooling process.

[0051] Reference Figure 6 , Figure 7 , Figure 8 A rotating groove 45 is provided inside the constricted housing 41 on one side of the multiple oblique constricted inlets 42 near the forming and post-processing structure. The rotating groove 45 is connected to the multiple oblique constricted inlets 42. A mechanical iris structure 46 is provided at each position of the multiple oblique constricted inlets 42 in the rotating groove 45. The mechanical iris structure 46 includes a fixed outer shell 461 fixed to one side of the inner wall of the rotating groove 45. A guide base plate 464 is fixed to the other side of the inner wall of the rotating groove 45 on the fixed outer shell 461. Multiple sliding grooves are provided around the surface of the guide base plate 464. The guide base plate 464 is fixed to the fixed outer shell 461 by screws. A drive ring 462 is rotatably provided on one side between the guide base plate 464 and the fixed outer shell 461. A gear is provided around the outer surface of the drive ring 462. The gear protrudes from the screws between the fixed outer shell 461 and the guide base plate 464, maintaining rotation while ensuring that the rotation angle is limited to within 60°.

[0052] Multiple iris blades 463 are rotatably connected to the side of the drive ring 462 facing the guide base plate 464. The multiple iris blades 463 are all made of high-strength alloy steel 42CrMo with a thickness of 6mm. They are in an arc-shaped state with the blades tightly abutting each other, which not only provides hardness but also ensures that the multi-layered blades will not interfere with the extruded round wire. The tops of the multiple iris blades 463 are rotatably connected to the side surface of the drive ring 462 (the unfolding angle of each iris blade 463 is adjustable, ranging from 10° to 60°, to ensure precise control of the round wire aperture). The bottoms of the multiple iris blades 463 are inserted into the grooves on the side surface of the guide base plate 464, so that rotating the drive ring 462 pushes the multiple iris blades 463 to unfold and retract around the grooves of the guide base plate 464.

[0053] A first gear rod 43 is rotatably arranged at the center of the inner wall of the rotating groove 45. The surface of the first gear rod 43 is provided with gears, and the gears of the first gear rod 43 mesh with multiple drive rings 462, thereby driving the multiple drive rings 462 to rotate synchronously. A groove is opened inward in the middle of the outer surface of the constricted housing 41. A second motor 10 is fixed in the groove. The second motor 10 is a self-locking motor. The output end of the second motor 10 passes through the constricted housing 41 and is fixedly connected to the middle of the first gear rod 43 to form a transmission. At the same time, a linkage cavity 47 is opened from the side of the rotating groove 45 away from the second motor 10 into the constricted housing 41. The rod part of the first gear rod 43 extends synchronously into the linkage cavity 47 and is rotatably connected. A second gear surface 44 is fixed on the middle surface of the extension.

[0054] Reference Figure 2 , Figure 3 , Figure 5 The vibration mechanism 3 includes a support base 31 fixed on the upper surface of the main body base 1 at the bottom of the constricted housing 41. The top of the support base 31 has a downward-facing mounting cavity 33, and a vibration fan plate 310 is longitudinally inserted into the top of the mounting cavity 33. The upper surface of the vibration fan plate 310 is arc-shaped and fits the bottom surface of the constricted housing 41. The two sides of the lower surface of the vibration fan plate 310 are fixedly connected to the mounting cavity 33. The bottom of the two first contraction springs 39 are fixedly connected to the bottom of the mounting cavity 33. The bottom of the mounting cavity 33 is provided with a limit cylinder 32 around the position of the two first contraction springs 39, thereby limiting the extension and retraction of the first contraction springs 39 and preventing displacement.

[0055] A single-sided cam rod 34 is rotatably arranged on both sides of the middle of the inner wall of the mounting cavity 33. The single-sided cam rod 34 is composed of two rotating rods and two single-sided cams fixedly connected. A lower rotating block 35 is rotatably connected to the middle of the cam of the single-sided cam rod 34. A connecting plate 36 is rotatably connected to the top of the lower rotating block 35. An upper rotating block 37 (the upper rotating block 37 has the same structure as the lower rotating block 35 but in the opposite direction) is rotatably connected to the top of the connecting plate 36. A transmission seat 38 is movably provided through both ends of the side surface of the upper rotating block 37. The transmission seat 38 is trapezoidal from top to bottom, and a limiting cavity 311 is opened in the inner wall of the transmission seat 38. The top of the limiting cavity 311 passes through the transmission seat 38 and communicates with the outside.

[0056] A ring groove is formed in the middle of the lower end face of the support base 31 at the position of the transmission seat 38, and the ring groove is movably inserted into the outer surface of the transmission seat 38. A limiting protrusion 312 is fixedly protruded from the middle of the ring groove of the support base 31. The limiting protrusion 312 is inserted into the limiting cavity 311, and a second contraction spring 313 is fixedly arranged around the upper end face of the insertion end of the limiting protrusion 312. The top of the second contraction spring 313 is fixedly connected to the top of the inner wall of the limiting cavity 311, thereby applying a rebound force to the limiting protrusion 312. Combined with the first contraction springs 39 on both sides, when the transmission seat 38 moves up and down, it pushes the vibrating fan plate 310 to perform low-frequency mechanical vibration.

[0057] Reference Figure 2 , Figure 4 , Figure 5 , Figure 7 The linkage mechanism 5 includes a gear block 51 that is movably inserted into the linkage cavity 47 from the bottom of the constricted housing 41 (the gear on the surface of the gear block 51 is larger than the through diameter, so that the top of the gear block 51 is engaged in the linkage cavity 47). Four linkage rods 52 are fixedly arranged around the lower end face of the gear block 51, and the four linkage rods 52 are movably inserted through the vibrating fan plate 310 located on one side of the lower end face. The through openings of the four linkage rods 52 of the vibrating fan plate 310 are all annularly expanded, so that each of the four linkage rods 52 can rotate a maximum of 60° around the vibrating fan plate 310.

[0058] A fixed base plate 54 is fixedly installed around the bottom of the vibrating fan plate 310 at the bottom of the through-hole of the linkage rod 52. At the same time, a cam plate 53 is abutting against the vibrating fan plate 310 on the upper surface of the fixed base plate 54. The upper surface of the cam plate 53 is fixedly connected to four linkage rods 52, so that the linkage rods 52 drive the cam plate 53 to rotate. Multiple T-shaped moving slots 56 are opened around the lower surface of the fixed base plate 54, and a limiting extrusion block 55 is inserted laterally in each moving slot 56. The bottom of the limiting extrusion block 55 is T-shaped, and the top of the limiting extrusion block 55 extends to the upper surface of the fixed base plate 54 in a C-shape. The extended end of the limiting extrusion block 55 abuts against the convex surface of the cam plate 53 in normal state. A tension spring 57 is fixedly installed in the middle of the C-shaped extension of the multiple limiting extrusion blocks 55, and the other end of the multiple tension springs 57 is fixedly connected to the side surface of the fixed base plate 54.

[0059] It should be noted that the extension spring 57 is always in a contracted state. When the cam plate 53 presses the limiting compression block 55, the extension spring 57 is in an expanded state. When the cam plate 53 releases the pressure on the limiting compression block 55, the extension spring 57 rebounds to ensure the reset of the limiting compression block 55. At the same time, a first motor 9 is fixed on one side of the outer surface of the support base 31. The output end of the first motor 9 moves through the support base 31 and is located in the mounting cavity 33, and is fixed to one side of the single-sided cam rod 34 to form a power transmission. The first motor 9 and the second motor 10 used in this device are both remotely controlled by a microcomputer. Since the vibrating fan plate 310 is always in a longitudinal reciprocating state and the gear block 51 is longitudinally inserted into the linkage cavity 47, interference caused by the movement of the vibrating fan plate 310 and the gear block 51 is avoided.

[0060] The implementation principle of an extruder for producing plastic round filaments according to an embodiment of the present invention is as follows: When using this device, the roller stirring device 7 first drives the stirring roller of the extrusion structure 2 to rotate. Then, during the rotation of the stirring roller, the feeding structure 8 conveys the external plastic particles to the connecting pipe 6. As the stirring roller rotates, the material is driven into the shell of the extrusion structure 2. Through the roller surface texture and the inner wall of the extrusion structure 2 shell, the plastic particles are stirred and extruded by friction, generating heat. Combined with the heat transferred by the heating ring outside the barrel, the temperature of the particles is gradually raised to the melting point. Then, the melt gradually fills the screw groove, transforming the material into a molten state. Then, the molten material is extruded from the extrusion port of the extrusion structure 2 shell through the texture of the stirring roller.

[0061] The extruded material first enters the inclined constriction inlet 42, where it is initially compacted by the compression of the narrowed path. Then, when it enters the guide base plate 464, the personnel control the first motor 9 and the second motor 10 to run synchronously according to the size requirements. As the first motor 9 drives the single-sided cam rod 34 to rotate, it applies an eccentric force to the lower rotating block 35, which is rotatably connected to the middle of the single-sided cam rod 34. This causes the lower rotating block 35 to rotate around the rod at the center of the single-sided cam rod 34. During the rotation, it drives the connecting plate 36 to swing. At the same time, the top of the connecting plate 36 is rotatably connected to the upper rotating block 37, thus forming a limit. This generates an interaction force that applies a push-pull force to the entire transmission seat 38, causing the transmission seat 38 to reciprocate longitudinally.

[0062] The transmission seat 38 is inserted into the annular groove at the bottom of the vibrating fan plate 310 and applies an upward pushing force to the bottom of the second contraction spring 313. The second contraction spring 313 contracts and drives the limiting protrusion 312, causing the entire vibrating fan plate 310 to move upward. At the same time, the first contraction springs 39 on both sides contract synchronously, thereby applying a downward pulling force to the vibrating fan plate 310. When the vibrating fan plate 310 is pushed and pulled, the elasticity of the springs generates a small-amplitude reciprocating vibration, forming a low-frequency mechanical vibration, which is applied to the surface of the constricted shell 41. When the constricted shell 41 is vibrated, the molten round wires located inside the constricted shell 41 are vibrated synchronously, thereby uniformly distributing the round wire particles and improving the roundness of the round wires.

[0063] Simultaneously, as the second motor 10 operates, it drives the first gear rod 43 to rotate. The first gear rod 43 meshes with multiple drive rings 462, thereby causing the iris blade 463 to expand and contract along the surface of the guide base plate 464 with the guide base plate 464 as the center. This limits the round wire material extruded into the inclined constriction inlet 42 according to the size requirements of the site, and changes the diameter of the path of the round wire material entering.

[0064] Furthermore, as the first gear rod 43 drives the second gear surface 44 to rotate, the gear block 51 meshing with the second gear surface 44 rotates synchronously, driving the cam plate 53 to rotate. As the convex surface of the cam plate 53 changes, the limiting extrusion block 55 abutting against the cam plate 53 is subjected to the contraction force of the extension spring 57 and thus is inserted along the moving groove 56, so that the bottom of the limiting extrusion block 55 is inserted into the annular groove between the transmission seat 38 and the vibrating fan plate 310, shortening the moving distance of the transmission seat 38, thereby reducing the vibration amplitude of the vibrating fan plate 310. Thus, while adjusting the diameter of the circular wire path, the vibration amplitude of the vibrating fan plate 310 is adjusted simultaneously, thereby smoothing the extrusion process of the circular wire and ensuring that the diameter of the circular wire and the vibration amplitude are always matched, so as to improve the uniformity of the circular wire and avoid the secondary uneven distribution of the circular wire caused by the mismatch of the vibration amplitude.

[0065] The above are merely optional embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An extruder for producing plastic round filaments, characterized in that: Includes a main base (1), an extrusion structure (2) is provided on one side of the top of the main base (1), a vibration mechanism (3) for vibrating the extruded round wire is provided on the top of the main base (1) on the side of the extrusion structure (2), a necking mechanism (4) for controlling the size of the discharge orifice of the round wire is provided on the top of the vibration mechanism (3) at the position of the extrusion structure (2), and a conveying pipe (11) for providing displacement redundancy for the necking mechanism (4) is provided on the side of the necking mechanism (4) facing the output end of the extrusion structure (2). A linkage mechanism (5) is provided between the vibration mechanism (3) and the narrowing mechanism (4). The linkage mechanism (5) includes a gear block (51) rotatably disposed in the narrowing mechanism (4). The bottom of the gear block (51) movably passes through the vibration mechanism (3) and a cam plate (53) is provided. A fixed base plate (54) is provided at the bottom of the cam plate (53) in the vibration mechanism (3). A plurality of limiting extrusion blocks (55) are movably disposed on the bottom surface of the fixed base plate (54) to limit the vibration amplitude of the vibration mechanism (3).

2. The extruder for producing plastic round filaments according to claim 1, characterized in that: The vibration mechanism (3) includes a support base (31) fixed on the top of the main body base (1) and located on one side of the extrusion structure (2). The support base (31) has an installation cavity (33) inside. A single-sided cam rod (34) is rotatably arranged in the middle of the installation cavity (33). A lower rotating block (35) is movably arranged in the middle of the single-sided cam rod (34). A connecting plate (36) is rotatably connected to the top of the lower rotating block (35). An upper rotating block (37) is rotatably connected to the top of the connecting plate (36). A transmission seat (38) is rotatably connected to both sides of the side surface of the upper rotating block (37).

3. The extruder for producing plastic round filaments according to claim 2, characterized in that: The top of the support base (31) is movably inserted into the mounting cavity (33) and a vibrating fan plate (310) is provided. Limiting cylinders (32) are fixed on both sides of the vibrating fan plate (310) in the mounting cavity (33). First contraction springs (39) are fixed on both sides of the bottom of the vibrating fan plate (310). The bottoms of the two first contraction springs (39) are fixed to the bottom of the limiting cylinders (32).

4. The extruder for producing plastic round filaments according to claim 3, characterized in that: A ring groove is formed in the middle of the lower end face of the vibrating fan plate (310), and a limiting protrusion (312) is fixed in the middle of the ring groove. The outer surface of the transmission seat (38) is movably inserted into the ring groove of the vibrating fan plate (310). A limiting cavity (311) is formed inward at the top of the transmission seat (38) and is movably inserted into the limiting protrusion (312). A second contraction spring (313) is fixed on the annular upper end face of the limiting protrusion (312) of the limiting cavity (311). The top of the second contraction spring (313) is fixed to the top of the inner wall of the limiting cavity (311).

5. An extruder for producing plastic round filaments according to claim 4, characterized in that: The constriction mechanism (4) includes a constriction housing (41) that abuts against the top surface of the vibrating fan plate (310). The constriction housing (41) has a through-hole (42) at the position of the conveying pipe (11). The through-hole (42) has a rotating groove (45) extending inside the constriction housing (41). Multiple mechanical iris structures (46) are fixedly arranged around the rotating groove (45). A first gear rod (43) is rotatably arranged in the middle of the rotating groove (45) and rotatably connected to the multiple mechanical iris structures (46). A linkage cavity (47) is opened on one side of the first gear rod (43) inside the constriction housing (41). A second gear surface (44) is rotatably arranged in the linkage cavity (47) of the first gear rod (43). The second gear surface (44) is rotatably connected to the gear block (51).

6. An extruder for producing plastic round filaments according to claim 5, characterized in that: The mechanical iris structure (46) includes a fixed outer shell (461) fixed on one side of the inner wall of the rotating groove (45), a guide base plate (464) fixed on one side of the fixed outer shell (461), a drive ring (462) rotatably arranged between the fixed outer shell (461) and the guide base plate (464), the outer surface of the drive ring (462) meshing with the first gear rod (43), and an iris blade (463) unfolded between the drive ring (462) and the guide base plate (464).

7. The extruder for producing plastic round filaments according to claim 4, characterized in that: The gear block (51) has multiple linkage rods (52) fixedly installed at the bottom. The bottom of each linkage rod (52) is movably connected to the vibrating fan plate (310) and is located in the mounting cavity (33) and connected to the cam plate (53). The side surface of the vibrating fan plate (310) is fixedly provided with a fixed base plate (54) at the bottom of the cam plate (53). The fixed base plate (54) and the vibrating fan plate (310) are located at the upper and lower ends of the cam plate (53) to form a clamp.

8. An extruder for producing plastic round filaments according to claim 7, characterized in that: The bottom surface of the fixed base plate (54) is provided with a plurality of movable grooves (56), and each of the plurality of movable grooves (56) is movably inserted into a plurality of limiting extrusion blocks (55). Each of the plurality of limiting extrusion blocks (55) is fixedly provided with a tension spring (57) on the side facing the fixed base plate (54), and the side of the plurality of tension springs (57) away from the limiting extrusion blocks (55) is fixedly connected to the surface of the fixed base plate (54).

9. An extruder for producing plastic round filaments according to claim 5, characterized in that: A first motor (9) is provided on one side of the outer surface of the support base (31). The output end of the first motor (9) passes through the mounting cavity (33) and is fixedly connected to one end of the single-sided cam rod (34). A second motor (10) is provided on one side of the outer surface of the constricted housing (41). The output end of the second motor (10) passes through the rotating groove (45) and is fixedly connected to the first gear rod (43).

10. An extruder for producing plastic round filaments according to claim 9, characterized in that: The extrusion structure (2) is provided with a connecting pipe (6) on the side away from the constriction shell (41), and a feeding structure (8) is provided at the top of the connecting pipe (6). A roller stirring device (7) is provided at the other end of the connecting pipe (6) relative to the extrusion structure (2).

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