Stirring feeding device, central feeding system and control method of central feeding system

Abstract

The invention discloses a stirring feeding device, a central feeding system and a control method thereof.The stirring feeding device comprises a raw material feeding bin and a raw material stirring bin, a stirring rotating ring assembly is arranged in the raw material stirring bin, and rotating stirring lower blade assemblies are evenly distributed on the stirring rotating ring assembly around the center circumference of the stirring rotating ring assembly; the rotary stirring lower blade assemblies are provided with parallel opening and closing type upper blade assemblies which can be opened in parallel relative to the rotary stirring lower blade assemblies, and the raw material stirring bin is internally provided with an inclination angle maintaining and adjusting assembly used for changing the inclination angles of the multiple rotary stirring lower blade assemblies in the continuous rotating state. According to the corresponding central feeding system and the intelligent control method, stirring parameters are dynamically adjusted according to raw material characteristics and production requirements, the mixing uniformity and the feeding efficiency are improved, and the cooperative production requirements of multiple injection molding machines are met.

Description

Technical Field

[0001] This invention relates to the technical field of injection molding production material supply equipment for casters and flatbed truck parts, and particularly to a mixing and feeding device, a central feeding system and its control method. Background Technology

[0002] Injection molding production of casters and pallet trucks typically requires the use of plastic raw materials with different properties, such as PP, TPE, and TPU, or mixtures of multiple raw materials. Existing central feeding systems generally suffer from the following problems with their mixing modules: the mixing blade structure is fixed, making it impossible to dynamically adjust the mixing mode according to the viscosity, particle size, and other characteristics of the raw materials; insufficient shear force when mixing high-viscosity raw materials, and excessive energy consumption when mixing low-viscosity raw materials; the material cannot be adjusted according to actual needs during the mixing process, resulting in poor mixing uniformity and potentially leading to unstable mechanical properties of the injection molded products; and poor linkage between the feeding system and the injection molding machine, making it impossible to dynamically allocate the feeding amount according to the production needs of multiple injection molding machines, which can easily lead to insufficient feeding or overload.

[0003] To address the aforementioned problems, this invention proposes an artificial intelligence adaptive mixing and feeding device and a central feeding system, which overcomes the shortcomings of existing technologies through adaptive structural adjustment and intelligent control.

[0004] Therefore, the existing technology of injection molding production material supply equipment needs further improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a mixing and feeding device, a central feeding system and its control method, and the corresponding central feeding system and intelligent control method, which can dynamically adjust the mixing parameters according to the characteristics of raw materials and production needs, improve the mixing uniformity and feeding efficiency, and adapt to the collaborative production needs of multiple injection molding machines.

[0006] To achieve the above objectives, the present invention adopts the following solution:

[0007] A mixing and feeding device includes a raw material supply bin and a raw material mixing bin. A mixing rotating ring assembly is disposed within the raw material mixing bin. Rotating lower mixing blades are evenly distributed around the central circumference of the mixing rotating ring assembly. Each rotating lower mixing blade has a parallel-opening upper mixing blade that can open parallel to the lower mixing blade. An angle-maintaining adjustment assembly for changing the tilt angle of the multiple rotating lower mixing blades during continuous rotation is disposed within the raw material mixing bin. An adaptive linkage opening and closing structure is provided between the mixing rotating ring assembly and the parallel-opening upper mixing blades. Multiple openings are evenly distributed on the surfaces of the rotating lower mixing blades and the parallel-opening upper mixing blades.

[0008] Furthermore, the raw material supply silo includes a storage silo body, and a pumping assembly is provided on the storage silo body;

[0009] The raw material mixing chamber includes a base, on which the mixing chamber is disposed. The output end of the pumping component is connected to the mixing chamber, and a raw material output component is disposed on one side of the mixing chamber.

[0010] Furthermore, the stirring rotating ring assembly includes an annular rolling bearing disposed on the inner wall of the stirring chamber, a rotating stirring ring rotatably mounted on the annular rolling bearing, a stirring motor disposed at the bottom of the raw material stirring chamber, a rotating main shaft extending into the raw material stirring chamber from the output end of the stirring motor, and a plurality of connecting and fixing rods disposed between the rotating main shaft and the rotating stirring ring.

[0011] Furthermore, the rotary stirring blade assembly includes a blade shaft mounting base disposed on the outer circumference of the rotary main shaft, a rotary blade shaft disposed within the blade shaft mounting base, and stirring blades disposed on the rotary blade shaft.

[0012] Furthermore, the parallel opening and closing upper blade assembly includes two first hinge seats spaced apart on the end face of the lower stirring blade, and an upper stirring blade is disposed above the lower stirring blade; two second hinge seats are spaced apart on the end face of the upper stirring blade, and a parallel connecting rod is hinged between the first hinge seat and a corresponding second hinge seat, the distance between the two second hinge seats is the same as the distance between the two second hinge seats, and the two parallel connecting rods are parallel to each other and of the same length.

[0013] Furthermore, the tilt angle maintaining adjustment assembly includes multiple vertical guide grooves disposed on the rotating stirring ring, vertical guide blocks being movably disposed within the vertical guide grooves, a lifting ring body connecting the multiple vertical guide blocks, an annular drive groove disposed on the inner wall of the lifting ring body, an eccentric drive wheel disposed at the end corner of the lower stirring blade, the eccentric drive wheel being movably installed within the annular drive groove, and a synchronous height drive assembly for controlling the height position of the multiple vertical guide blocks being disposed within the raw material stirring chamber.

[0014] Furthermore, the synchronous height drive assembly includes multiple vertical guide structures and a vertical telescopic motor fixedly installed inside the raw material mixing chamber. The output ends of the multiple vertical guide structures and the vertical telescopic motor are provided with drive rings. The inner wall of the drive ring is provided with an annular adjustment guide groove. The drive ring wraps around the rotating mixing ring. The vertical guide block extends outward and is provided with an arc-shaped slider. The arc-shaped slider is movably installed inside the annular adjustment guide groove.

[0015] Furthermore, the adaptive linkage opening and closing structure includes a fixed annular groove disposed on the rotating stirring ring, the annular drive groove being height-adjustable relative to the fixed annular groove, and an adaptive adjustment wheel being disposed at the corner of the end face of the upper stirring blade, the adaptive adjustment wheel being movably installed in the fixed annular groove.

[0016] A central feeding system includes an intelligent control component, a raw material characteristic detection component, and a multi-channel distribution valve assembly;

[0017] The intelligent control component is electrically connected to the pumping component, the raw material output component, the stirring motor, the vertical telescopic motor, the raw material characteristic detection component, and the multi-channel distribution valve group, respectively.

[0018] The raw material characteristic detection component includes a temperature sensor, a humidity sensor, and a particle size analyzer installed inside the storage silo, as well as a mixing uniformity analyzer installed at the outlet of the mixing silo.

[0019] The input end of the multi-channel distribution valve group is connected to the raw material output component, and the output end is connected to multiple injection molding machines. The multi-channel distribution valve group has built-in electric ball valves and flow sensors, and can switch the feeding channel and adjust the feeding flow according to the instructions of the intelligent control component.

[0020] An intelligent control method includes the following steps:

[0021] S1. The raw material characteristic detection component collects the temperature, humidity, and particle size parameters of the raw materials in the storage silo in real time. Combined with the raw material batch RFID traceability information, the component obtains basic data on density, melt index, and viscosity. The intelligent control component builds a dynamic database of raw material characteristics and automatically identifies the raw material type and mixing combination scheme.

[0022] S2. The intelligent control component receives the production plans of multiple injection molding machines, calls the preset parameter library, and matches the corresponding initial tilt angle of the mixing blade, the speed of the mixing motor, the tilt angle of the mixing blade, and the material supply flow of the pumping component.

[0023] S3: The intelligent control component receives real-time data on the mixing uniformity of the mixing chamber outlet, the torque of the mixing motor, and the melt pressure and molding qualification rate data fed back by the injection molding machine PLC, and dynamically adjusts the operating parameters.

[0024] S4: The intelligent control component automatically switches the feeding path and adjusts the opening of the electric ball valve based on the raw material consumption rate, production priority, and flow detection data of the multi-path distribution valve group of each injection molding machine, so as to realize the dynamic distribution of the feeding amount of multiple injection molding machines and avoid overload or insufficient feeding of a single path.

[0025] In summary, the advantages of this invention over the prior art are:

[0026] This invention addresses the shortcomings of existing injection molding production material supply equipment technology. Through the structural design of this invention, it has the following advantages: the tilt angle of the lower stirring blade is dynamically adjustable through the tilt angle holding and adjusting component, and the upper stirring blade is opened and closed in parallel by the adaptive linkage opening and closing structure, forming a dual-mode switching of horizontal tilting opening to enhance shearing and vertical closing to enhance pushing. It can accurately adapt to the differentiated stirring needs of high viscosity, low viscosity and mixed raw materials, solve the problem of the single adaptability of traditional fixed stirring blades, and significantly improve the mixing uniformity. The tilt angle adjustment can be completed while the stirring blades are continuously rotating. The parallel linkage mechanism ensures that the upper and lower stirring blades remain parallel, preventing interruption of material stirring or mixing disorder during adjustment. The coordinated design of the arc-shaped slider and the annular adjustment guide groove achieves synchronous height adjustment without interfering with the circular motion of the stirring ring, effectively improving the stability of the device. The evenly distributed openings on the surface of the stirring blades create a turbulence effect, enhancing secondary shearing. The intelligent control components in the central feeding system are electrically connected to each execution and detection component. Based on raw material characteristic detection data, it can automatically match stirring parameters and dynamically schedule material supply through multi-channel distribution valve groups, combined with the production needs of the injection molding machines. This enables coordinated material supply from multiple injection molding machines, reducing manual intervention and improving production efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the mixing and feeding device of the present invention;

[0028] Figure 2 This is a perspective view of the mixing and feeding device of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the mixing and feeding device of the present invention;

[0030] Figure 4 This is a schematic diagram of the vertical state of the stirring blade of the present invention;

[0031] Figure 5 This is a schematic diagram of the stirring blade in a laterally tilted double-layer state according to the present invention;

[0032] Figure 6 This is one of the schematic diagrams of the internal mechanism of the raw material mixing chamber of the present invention;

[0033] Figure 7 This is one of the exploded views of the present invention;

[0034] Figure 8 For the present invention Figure 7 A magnified view of part A;

[0035] Figure 9 This is the second exploded view of the present invention;

[0036] Figure 10 This is a second schematic diagram of the internal mechanism of the raw material mixing chamber of the present invention;

[0037] Figure 11 For the present invention Figure 10 A magnified view of section B;

[0038] Figure 12 For the present invention Figure 11 A magnified view of a portion at point C;

[0039] Figure 13 This is a schematic diagram of the central feeding system of the present invention. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-13This invention provides a mixing and feeding device, including a raw material supply bin 1 and a raw material mixing bin 2. A mixing rotating ring assembly 3 is disposed within the raw material mixing bin 2. Rotating lower mixing blade assemblies 4 are evenly distributed around the central circumference of the mixing rotating ring assembly 3. Parallel opening and closing upper blade assemblies 5 are disposed on the rotating lower mixing blade assemblies 4, capable of opening parallel to the rotating lower mixing blade assemblies 4. An angle-maintaining adjustment assembly 6 is disposed within the raw material mixing bin 2 for changing the tilt angle of the multiple rotating lower mixing blade assemblies 4 under continuous rotation. An adaptive linkage opening and closing structure 7 is disposed between the mixing rotating ring assembly 3 and the parallel opening and closing upper blade assemblies 5. When the rotating lower mixing blade assemblies 4 are in a near-vertical state, the contact area between the multiple openings 8 and the raw material is increased, and the radial shear force is enhanced. The parallel opening and closing upper blade assemblies 5 close and adhere to the surface of the rotating lower mixing blade assemblies 4. When the rotating lower mixing blade assemblies 4 are in an inclined state, the axial pushing force is enhanced, and the parallel opening and closing upper blades 5... Component 5 is positioned away from the surface of the rotating stirring lower blade assembly 4, forming two layers of stirring blades to enhance the stirring and shearing force. Multiple openings 8 are evenly distributed on the surfaces of the rotating stirring lower blade assembly 4 and the parallel opening and closing upper blade assembly 5. The raw material supply chamber 1 supplies raw materials to the raw material mixing chamber 2, and the stirring rotating ring assembly 3 drives the rotating stirring lower blade assembly 4 to rotate in a circular motion. The tilt angle maintaining adjustment assembly 6 can change the tilt angle of the rotating stirring lower blade assembly 4 during rotation. The adaptive linkage opening and closing structure 7 synchronously controls the opening and closing state of the parallel opening and closing upper blade assembly 5: when the rotating stirring lower blade assembly 4 is nearly vertical, the parallel opening and closing upper blade assembly 5 closes, increasing the contact area with the raw materials through the openings 8; when the rotating stirring lower blade assembly 4 is tilted, the parallel opening and closing upper blade assembly 5 opens to form a double-layer stirring blade, enhancing the axial pushing force and shearing force. After the raw materials are mixed, they are output from the raw material mixing chamber 2. The rotating main shaft 304 can be divided into two sections, with a push rod motor between the two sections to control the distance between them, thus adjusting the height of the stirring blades within the raw material supply chamber 1.

[0042] The raw material supply bin 1 of the present invention includes a storage bin body 101, and a pumping assembly 102 is provided on the storage bin body 101;

[0043] The raw material mixing chamber 2 includes a base 201, on which a mixing chamber 202 is mounted. The output end of the pumping component 102 is connected to the mixing chamber 202. A raw material output component 203 is provided on one side of the mixing chamber 202. The storage chamber body 101 stores raw materials, and the pumping component 102 pumps the raw materials in the storage chamber body 101 to the mixing chamber 202 of the raw material mixing chamber 2. The base 201 provides support for the mixing chamber 202, and the mixed raw materials are transported outward through the raw material output component 203 on the side of the mixing chamber 202.

[0044] The stirring rotating ring assembly 3 of the present invention includes an annular rolling bearing 301 disposed on the inner wall of the stirring chamber 202, a rotating stirring ring 302 rotatably mounted on the annular rolling bearing 301, a stirring motor 303 disposed at the bottom of the raw material stirring chamber 2, a rotating main shaft 304 extending into the raw material stirring chamber 2 disposed at the output end of the stirring motor 303, and a plurality of connecting and fixing rods 305 disposed between the rotating main shaft 304 and the rotating stirring ring 302; the annular rolling bearing 301 provides rotational support for the rotating stirring ring 302, the stirring motor 303 drives the rotating main shaft 304 to rotate, and the rotating main shaft 304 drives the rotating stirring ring 302 to rotate synchronously through the connecting and fixing rods 305, providing a stable rotational power foundation for the rotating stirring lower blade assembly 4.

[0045] The rotary stirring blade assembly 4 of the present invention includes a blade shaft mounting base 401 disposed on the outer circumference of the rotary main shaft 304. A rotary blade shaft 402 is disposed radially along the rotary main shaft 304 inside the blade shaft mounting base 401, and a stirring blade 403 is disposed on the rotary blade shaft 402. The blade shaft mounting base 401 provides an installation position for the rotary blade shaft 402, and the rotary blade shaft 402 can rotate within the blade shaft mounting base 401, thereby driving the stirring blade 403 to change its tilt angle to adapt to different stirring requirements.

[0046] The parallel opening and closing upper blade assembly 5 of the present invention includes two first hinge seats 501 spaced apart on the end face of the lower stirring blade 403, and an upper stirring blade 510 is disposed above the lower stirring blade 403; the upper stirring blade 510 can move away from or be close to the lower stirring blade 403; two second hinge seats 502 are spaced apart on the end face of the upper stirring blade 510, and a parallel connecting rod 503 is hinged between the first hinge seat 501 and a corresponding second hinge seat 502; the distance between the two second hinge seats 502 is the same as the distance between the two second hinge seats 502, and the two parallel connecting rods 503 are parallel to each other and of the same length. When the upper stirring blade 510 opens and closes relative to the lower stirring blade 403 following the two parallel connecting rods 503, the surfaces of the lower stirring blade 403 and the upper stirring blade 510 are always parallel to each other through the parallel connecting rods 503; the first hinge seat 501 and the second hinge seat 502 are hinged through the parallel connecting rods 503. When the parallel connecting rods 503 rotate, since the distance between the two second hinge seats 502 is the same as the distance between the two first hinge seats 501, and the parallel connecting rods 503 are parallel to each other and have the same length, the upper stirring blade 510 can be driven to open and close in parallel relative to the lower stirring blade 403, and always remain parallel to the surface of the lower stirring blade 403.

[0047] The tilt angle maintaining and adjusting component 6 of the present invention includes a plurality of vertical guide grooves 601 disposed on the rotating stirring ring 302, vertical guide blocks 602 are movably disposed in the vertical guide grooves 601, a lifting ring body 603 is connected between the plurality of vertical guide blocks 602, an annular drive groove 604 is disposed on the inner wall of the lifting ring body 603, an eccentric drive wheel 605 is disposed at the end corner of the stirring lower blade 403, the eccentric drive wheel 605 is movably installed in the annular drive groove 604, and a synchronous height drive component 606 for controlling the height position of the plurality of vertical guide blocks 602 is disposed in the raw material stirring chamber 2;

[0048] When it is necessary to adjust the stirring angle of the lower stirring blade 403, the vertical guide block 602 can be driven to adjust its height. When the vertical guide block 602 is adjusted in height, the annular drive groove 604 on the inner wall of the lifting ring 603 is controlled to follow the height adjustment. At this time, the eccentric drive wheel 605 inside the annular drive groove 604 follows the height adjustment and rotates around the axis of the rotating blade shaft 402, thereby adjusting the tilt angle of the lower stirring blade 403. At the same time, under the control of the parallel opening and closing upper blade assembly 5, the upper stirring blade 510 is kept in the same tilt angle and remains parallel to each other. Since the upper stirring blade 510 and the lower stirring blade 403 are in a continuous stirring state, the eccentric drive wheel... The eccentric drive wheel 605 rotates circumferentially along the height of the annular drive groove 604. By changing the height of the annular drive groove 604, the height of the eccentric drive wheel 605 in the rotating state is changed, realizing dynamic adjustment during the stirring process. The synchronous height drive component 606 drives the vertical guide block 602 to rise and fall within the vertical guide groove 601, driving the lifting ring 603 to rise and fall synchronously, causing the height of the annular drive groove 604 to change. The eccentric drive wheel 605 in the annular drive groove 604 rotates around the rotating blade shaft 402 as the height of the annular drive groove 604 changes, thereby changing the tilt angle of the lower stirring blade 403. When the lower stirring blade 403 rotates, the eccentric drive wheel 605 moves circumferentially along the annular drive groove 604, realizing dynamic tilt angle adjustment in the rotating state.

[0049] The synchronous height drive assembly 606 of the present invention includes a plurality of vertical guide structures 6061 and a vertical telescopic motor 6062 fixedly disposed within the raw material mixing chamber 2. A drive ring 6063 is provided at the output end of the plurality of vertical guide structures 6061 and the vertical telescopic motor 6062. An annular adjusting guide groove 6064 is provided on the inner wall of the drive ring 6063. The drive ring 6063 wraps around the rotating mixing ring 302. An arc-shaped slider 6068 extends outward from the vertical guide block 602 and is movably installed within the annular adjusting guide groove 6064. The height of the 6068 slider will be adjusted synchronously with the height of the annular adjustment guide groove 6064, but the annular adjustment guide groove 6064 cannot interfere with the circular motion of the arc-shaped slider 6068; the vertical telescopic motor 6062 drives the drive ring 6063 to rise and fall along the vertical guide structure 6061, and the annular adjustment guide groove 6064 rises and falls synchronously with the drive ring 6063; the arc-shaped slider 6068 on the vertical guide block 602 moves along the annular adjustment guide groove 6064, thereby driving the vertical guide block 602 to rise and fall within the vertical guide groove 601, while not restricting the circular motion of the arc-shaped slider 6068, ensuring the normal rotation of the rotating stirring ring 302.

[0050] The adaptive linkage opening and closing structure 7 of the present invention includes a fixed annular groove 701 disposed on the rotating stirring ring 302, and an annular drive groove 604 that can be height adjusted relative to the fixed annular groove 701. An adaptive adjustment wheel 702 is disposed at the corner of the end face of the upper stirring blade 510, and the adaptive adjustment wheel 702 is movably installed in the fixed annular groove 701. When the annular drive groove 604 rises, it will squeeze the adaptive adjustment wheel 702 in the fixed annular groove 701 to move backward, thereby tilting the lower stirring blade 403 and causing the stirring ring to move backward. The upper blade 510 is moved away from the lower blade 403, forming a double-layer state; the fixed annular groove 701 is fixed in position. When the annular drive groove 604 rises with the lifting ring 603, it will squeeze the adaptive adjustment wheel 702 in the fixed annular groove 701, causing the adaptive adjustment wheel 702 to drive the upper blade 510 to move away from the lower blade 403, realizing the linkage between the tilting of the lower blade 403 and the opening of the upper blade 510; when the annular drive groove 604 descends, the adaptive adjustment wheel 702 loses the squeezing force, and the upper blade 510 adheres back to the surface of the lower blade 403.

[0051] A central feeding system includes an intelligent control component 9, a raw material characteristic detection component 10, and a multi-channel distribution valve group 11;

[0052] The intelligent control component 9 is electrically connected to the pumping component 102, the raw material output component 203, the stirring motor 303, the vertical telescopic motor 6062, the raw material characteristic detection component 10, and the multi-channel distribution valve group 11, respectively.

[0053] The raw material characteristic detection component 10 includes a temperature sensor 100, a humidity sensor 200 and a particle size detector 300 installed in the storage silo body 101, and a mixing uniformity detector 400 installed at the outlet of the mixing chamber 202.

[0054] The input end of the multi-channel distribution valve group 11 is connected to the raw material output component 203, and the output end is connected to multiple injection molding machines. The multi-channel distribution valve group 11 has a built-in electric ball valve and flow sensor, which can switch the feeding channel and adjust the feeding flow according to the instructions of the intelligent control component 9.

[0055] An intelligent control method includes the following steps:

[0056] S1. The raw material characteristic detection component 10 collects the temperature, humidity and particle size parameters of the raw material in the storage silo body 101 in real time. Combined with the raw material batch RFID traceability information, the basic data of density, melt index and viscosity are obtained. The intelligent control component 9 constructs a dynamic database of raw material characteristics and automatically identifies the raw material type and mixing combination scheme.

[0057] S2, the intelligent control component 9 receives the production plan product model, injection process, and production speed of multiple injection molding machines, calls the preset parameter library, and matches the corresponding initial tilt angle of the lower stirring blade 403, the speed of the stirring motor 303, the tilt angle of the lower stirring blade 403, and the material supply flow rate of the pumping component 102; among them, high viscosity raw materials are matched with vertically tilted stirring blades, low speed, and upper blade closed state, while low viscosity raw materials are matched with horizontally tilted stirring blades, high speed, and upper blade open state;

[0058] S3, the intelligent control component 9 receives real-time data on mixing uniformity from the mixing chamber 202 outlet, torque data from the mixing motor 303, and melt pressure and molding pass rate data from the injection molding machine PLC, and dynamically adjusts operating parameters:

[0059] When the mixing uniformity is low, the vertical telescopic motor 6062 drives the lifting ring 603 to adjust the tilt angle of the lower stirring blade 403 and tilt it laterally. At the same time, the parallel opening and closing upper blade assembly 5 is controlled to open to form a double-layer stirring structure and enhance the shear force.

[0060] When the torque of the stirring motor 303 exceeds the set threshold, it is determined that the raw material is agglomerated or has abnormal viscosity. The stirring speed adjustment range is automatically reduced and the torque is increased, and the high-frequency vibration component of the bin wall is started simultaneously to assist in dispersion.

[0061] S4: The intelligent control component 9 automatically switches the feeding path and adjusts the opening of the electric ball valve based on the material consumption rate of each injection molding machine through feedback from the hopper liquid level sensor, production priority, and flow detection data of the multi-path distribution valve group 11. This achieves dynamic distribution of the material supply of multiple injection molding machines and avoids overload or insufficient supply of a single path.

[0062] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mixing and feeding device, comprising a raw material supply bin (1) and a raw material mixing bin (2), characterized in that: The raw material mixing chamber (2) is provided with a stirring rotating ring assembly (3). Rotating stirring lower blade assemblies (4) are evenly distributed around the central circumference of the stirring rotating ring assembly (3). A parallel opening and closing upper blade assembly (5) is provided on the rotating stirring lower blade assembly (4) and can open parallel to the rotating stirring lower blade assembly (4). An angle holding adjustment assembly (6) for changing the tilt angle of multiple rotating stirring lower blade assemblies (4) under continuous rotation is provided in the raw material mixing chamber (2). An adaptive linkage opening and closing structure (7) is provided between the stirring rotating ring assembly (3) and the parallel opening and closing upper blade assembly (5). Multiple openings (8) are evenly distributed on the surface of the rotating stirring lower blade assembly (4) and the parallel opening and closing upper blade assembly (5).

2. The mixing and feeding device according to claim 1, characterized in that: The raw material supply bin (1) includes a storage bin body (101), and a pumping assembly (102) is provided on the storage bin body (101). The raw material mixing chamber (2) includes a base (201), a mixing chamber (202) is provided on the base (201), the output end of the pumping component (102) is connected to the mixing chamber (202), and a raw material output component (203) is provided on one side of the mixing chamber (202).

3. The mixing and feeding device according to claim 2, characterized in that: The stirring rotating ring assembly (3) includes an annular rolling bearing (301) disposed on the inner wall of the stirring chamber (202), a rotating stirring ring (302) is rotatably mounted on the annular rolling bearing (301), a stirring motor (303) is disposed at the bottom of the raw material stirring chamber (2), a rotating main shaft (304) extending into the raw material stirring chamber (2) is disposed at the output end of the stirring motor (303), and a plurality of connecting fixing rods (305) are disposed between the rotating main shaft (304) and the rotating stirring ring (302).

4. The mixing and feeding device according to claim 3, characterized in that: The rotary stirring blade assembly (4) includes a blade shaft mounting base (401) disposed on the outer circumference of the rotary main shaft (304), a rotary blade shaft (402) disposed inside the blade shaft mounting base (401), and a stirring blade (403) disposed on the rotary blade shaft (402).

5. The mixing and feeding device according to claim 4, characterized in that: The parallel opening and closing upper blade assembly (5) includes two first hinge seats (501) spaced apart on the end face of the lower stirring blade (403), and an upper stirring blade (510) is provided above the lower stirring blade (403); two second hinge seats (502) are spaced apart on the end face of the upper stirring blade (510), and a parallel connecting rod (503) is hinged between the first hinge seat (501) and a corresponding second hinge seat (502), the distance between the two second hinge seats (502) is the same as the distance between the two second hinge seats (502), and the two parallel connecting rods (503) are parallel to each other and of the same length.

6. The mixing and feeding device according to claim 5, characterized in that: The tilt angle holding adjustment component (6) includes multiple vertical guide grooves (601) disposed on the rotating stirring ring (302). Vertical guide blocks (602) are movably disposed in the vertical guide grooves (601). A lifting ring body (603) is connected between the multiple vertical guide blocks (602). An annular drive groove (604) is disposed on the inner wall of the lifting ring body (603). An eccentric drive wheel (605) is disposed at the end corner of the stirring blade (403). The eccentric drive wheel (605) is movably installed in the annular drive groove (604). A synchronous height drive component (606) for controlling the height position of the multiple vertical guide blocks (602) is disposed in the raw material stirring chamber (2).

7. The mixing and feeding device according to claim 6, characterized in that: The synchronous height drive assembly (606) includes multiple vertical guide structures (6061) and a vertical telescopic motor (6062) fixedly installed in the raw material mixing chamber (2). The output ends of the multiple vertical guide structures (6061) and the vertical telescopic motor (6062) are provided with drive rings (6063). The inner wall of the drive ring (6063) is provided with an annular adjustment guide groove (6064). The drive ring (6063) is wrapped around the rotating stirring ring (302). The vertical guide block (602) extends outward and is provided with an arc-shaped slider (6068). The arc-shaped slider (6068) is movably installed in the annular adjustment guide groove (6064).

8. The mixing and feeding device according to claim 7, characterized in that: The adaptive linkage opening and closing structure (7) includes a fixed annular groove (701) disposed on the rotating stirring ring (302), the annular drive groove (604) can be height adjusted relative to the fixed annular groove (701), and an adaptive adjustment wheel (702) is disposed at the corner of the end face of the stirring upper blade (510), the adaptive adjustment wheel (702) is movably installed in the fixed annular groove (701).

9. A central feeding system for the mixing and feeding device according to claim 8, characterized in that: It includes an intelligent control component (9), a raw material characteristic detection component (10), and a multi-channel distribution valve assembly (11). The intelligent control component (9) is electrically connected to the pumping component (102), the raw material output component (203), the stirring motor (303), the vertical telescopic motor (6062), the raw material characteristic detection component (10), and the multi-channel distribution valve group (11), respectively. The raw material characteristic detection component (10) includes a temperature sensor (100), a humidity sensor (200), and a particle size analyzer (300) installed in the storage silo body (101), and a mixing uniformity analyzer (400) installed at the outlet of the mixing chamber (202). The input end of the multi-channel distribution valve group (11) is connected to the raw material output component (203), and the output end is connected to multiple injection molding machines. The multi-channel distribution valve group (11) has a built-in electric ball valve and flow sensor, which can switch the feeding channel and adjust the feeding flow according to the instructions of the intelligent control component (9).

10. An intelligent control method for a central feeding system according to claim 9, characterized in that, Includes the following steps: S1. The raw material temperature, humidity and particle size parameters in the storage bin body (101) are collected in real time by the raw material characteristic detection component (10). The density, melt index and viscosity data are obtained by combining the raw material batch RFID traceability information. The intelligent control component (9) constructs a dynamic database of raw material characteristics and automatically identifies the raw material type and mixing combination scheme. S2, The intelligent control component (9) receives the production plans of multiple injection molding machines, calls the preset parameter library, and matches the initial tilt angle of the stirring blade (403), the speed of the stirring motor (303), the tilt angle of the stirring blade (403) and the feed flow rate of the pumping component (102); S3, Intelligent control component (9) receives in real time the mixing uniformity detection data from the outlet of mixing chamber (202), the torque data of mixing motor (303), and the melt pressure and molding qualification rate data fed back by injection molding machine PLC, and dynamically adjusts the operating parameters; S4: The intelligent control component (9) automatically switches the material supply path and adjusts the opening of the electric ball valve according to the material consumption rate, production priority and flow detection data of the multi-path distribution valve group (11) of each injection molding machine, so as to realize the dynamic distribution of the material supply of multiple injection molding machines and avoid overload or insufficient material supply of a single path.

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