Charging device of plasticizing charging machine and parallel charging system

Abstract

The charging device of the plasticizing charging machine comprises a shell, a vibration main shaft and stirring blades, a circular-truncated-cone-shaped stirring cavity is formed in the shell, a cylindrical discharging opening is formed in the lower end of the stirring cavity, an upper cover is arranged at the upper end of the shell, and a vertically-through mounting hole is formed in the middle of the upper cover; a stirring blade transmission assembly is arranged at the upper end of the mounting hole, the stirring blade is connected with the lower end of the stirring blade transmission assembly, an upper closing plate is arranged at the position, located above the stirring blade transmission assembly, of the upper end of the upper cover, and the middle of the upper closing plate is sleeved with a vibration assembly which vibrates up and down. The lower end of the vibration spindle penetrates through the stirring cavity and is located in the middle of the discharging port, the inlet, close to the discharging port, of the vibration spindle is sleeved with a second discharging blade, and the outlet, close to the discharging port, of the vibration spindle is sleeved with a first discharging blade. The stirring assembly, the vibration main shaft and the vibration assembly are combined, and efficient stirring and guiding of materials in the stirring cavity are achieved.

Description

Technical Field

[0001] This invention relates to the field of drug loading machine technology, and in particular to a drug loading device and parallel drug loading system for a plasticizing drug loading machine. Background Technology

[0002] In order to facilitate material feeding, plasticizing loading machines need to heat and stir the material during operation. The common method used in existing plasticizing loading machines is to set up a rotating main shaft inside. The rotation of the main shaft drives the stirring blades to rotate, which in turn drives the screw feeding mechanism to rotate, so that the material is drawn out from the discharge port. This results in the rotation speed of the stirring blades being uncontrollable. In order to draw out the material, the speed of the screw feeding mechanism must reach a preset value. This not only causes the stirring blades to rotate at high speed, causing the material to be "flying / throwing" in the plasticizing loading machine, affecting the feeding efficiency, but also places high requirements on the power output mechanism to ensure the speed of the screw feeding mechanism. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to provide a plasticizing charging machine charging device that, through the combination of a stirring component, a vibrating main shaft, and a vibrating assembly, achieves efficient stirring and guidance of materials within the stirring chamber.

[0004] In a first aspect, the present invention provides a plasticizing loading device, comprising a housing, a vibrating main shaft, and stirring blades. The housing has a frustum-shaped stirring chamber inside, and a cylindrical discharge port at the lower end of the stirring chamber. The housing has an upper cover at its upper end, and a through-hole is formed in the middle of the upper cover. A stirring blade transmission assembly is located at the upper end of the mounting hole. The stirring blades are connected to the lower end of the stirring blade transmission assembly. An upper plate is located above the stirring blade transmission assembly at the upper end of the upper cover. A vibrating component with an up-and-down vibration direction is fitted in the middle of the upper plate. The vibrating main shaft is connected to the vibrating component. The lower end of the vibrating main shaft passes through the stirring chamber and is located in the middle of the discharge port. A second feeding blade is fitted on the outer side of the vibrating main shaft inside the stirring chamber near the inlet of the discharge port. A first feeding blade is fitted on the outer side of the vibrating main shaft inside the discharge port near the outlet.

[0005] Preferably, the stirring blade transmission assembly includes a first gear and a second gear. The first gear is located at the upper end of the mounting hole, and the second gear is located on one side of the first gear and meshes with it. The upper plate is located at the upper end of the first gear and the second gear. The upper plate and the upper cover form a rotating cavity for the first gear and the second gear to rotate. The stirring blade is located at the lower end of the first gear. A motor is provided at the upper end of the upper plate corresponding to the position of the second gear, and the rotating shaft of the motor is connected to the rotating shaft of the second gear.

[0006] Preferably, the vibration assembly includes a vibration platform and vibrators. The vibration platform is located above the upper plate, and mounting columns are sleeved on both sides of the vibration platform. The lower ends of the mounting columns are fixed to the upper plate. Rubber column connectors are sleeved on the outer sides of the mounting columns between the vibration platform and the upper plate. Vibrators are provided on both sides of the upper end of the vibration platform.

[0007] Preferably, the vibrating spindle has a pipe mounting cavity inside, a heating tube is sleeved inside the pipe mounting cavity, a liquid inlet is provided on the side wall of the vibrating spindle at the inlet of the heating tube, the outlet of the heating tube is connected to the inside of the pipe mounting cavity, and a liquid outlet is provided on the upper part of the vibrating spindle at the upper end of the pipe mounting cavity.

[0008] Preferably, the side wall of the housing has a heating chamber through which a circulating heating medium is introduced, and a liquid inlet is provided on one side of the lower end of the heating chamber, and a liquid outlet is provided on the other side of the upper end of the heating chamber.

[0009] Preferably, the second feeding blade includes a sleeve shaft with a through hole in the middle and multiple sets of inclined baffles evenly arranged along the side wall of the sleeve shaft. The sleeve shaft is sleeved on the outside of the vibrating main shaft, and the material vibration discharge chamber through which the material passes under vibration conditions is formed between two adjacent sets of baffles.

[0010] Preferably, a temperature measuring component for detecting the temperature of the material inside the mixing chamber is provided on the side wall of the mixing chamber.

[0011] Preferably, the outer side of the housing is provided with a heat insulation layer.

[0012] Preferably, the lower end of the discharge port is provided with a sensor for detecting the passage of material.

[0013] Secondly, the present invention proposes a parallel charging system for a plasticizing charging machine, which includes any of the above-mentioned plasticizing charging machine charging devices. The system includes three sets of the plasticizing charging machine charging devices arranged in parallel. The stirring chambers of the three sets of plasticizing charging machine charging devices arranged in parallel are connected in sequence. The upper cover of the two sets of plasticizing charging machine charging devices located on both sides is provided with a feed port.

[0014] The beneficial effects of this invention are:

[0015] (1) By introducing a design that combines a vibrating spindle with a vibrating assembly, the mixing effect and flowability of the material are significantly improved. Compared with the traditional rotating spindle structure, the vibrating spindle can effectively promote the uniform mixing of the material in the mixing chamber through up-and-down vibration, avoiding the situation of material scattering or insufficient mixing, thereby improving the loading efficiency. This design also reduces the need for high speed, reduces power consumption, and makes the equipment more efficient and energy-saving.

[0016] (2) The design of the feeding blades plays a crucial role in this invention. Especially when the vibration stops, the feeding blades can effectively block the material, preventing it from flowing out at inappropriate times, thus avoiding material leakage. This design helps ensure that the material flows as needed at the discharge port, and in conjunction with the operation of the vibration system, makes the material flow more stable and controllable. Through this innovative design, the problems of uneven material feeding and material leakage in traditional drug loading machines are effectively solved;

[0017] (3) It has a temperature control function. The housing is equipped with a heating chamber and a temperature measurement component, which enables the material to be kept within the target temperature range during the entire mixing and feeding process, thereby ensuring the stability and accuracy of the loading. It can monitor the material temperature in real time and adjust the heating state, further improving the reliability and applicability of the device. Attached Figure Description

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the structure of a plasticizing loading device for a drug loading machine proposed in this invention;

[0020] Figure 2 This is a schematic diagram of the structure of the second feeding blade proposed in this invention;

[0021] Figure 3 This is a schematic diagram of the parallel charging system for plasticizing charging machines proposed in this invention.

[0022] In the diagram: 1-Shell, 2-Heating chamber, 3-Outlet 1, 4-Top cover, 5-Inlet, 6-Gear 1, 7-Vibration platform, 8-Vibrator, 9-Inlet 2, 10-Outlet 2, 11-Vibration spindle, 12-Rubber column connector, 13-Stirring motor, 14-Gear 2, 15-Upper plate, 16-Stirring blade, 17-Insulation layer, 18-Temperature measuring component, 19-Inlet 1, 20-Discharge blade 1, 21-Outlet, 22-Discharge blade 2. Detailed Implementation

[0023] Reference Figure 1 A plasticizing loading device includes a housing 1, a vibrating main shaft 11, and a stirring blade 16. The housing 1 has a frustum-shaped stirring chamber inside, and a cylindrical discharge port 21 at the lower end of the stirring chamber. The housing 1 has an upper cover 4 at the upper end, and a through mounting hole is provided in the middle of the upper cover 4. A stirring blade transmission assembly is provided at the upper end of the mounting hole. The stirring blade 16 is connected to the lower end of the stirring blade transmission assembly. An upper plate 15 is provided above the stirring blade transmission assembly at the upper end of the upper cover 4. A vibrating assembly with a vertical vibration direction is fitted in the middle of the upper plate 15. The vibrating main shaft 11 is connected to the vibrating assembly. The lower end of the vibrating main shaft 11 passes through the stirring chamber and is located in the middle of the discharge port 21. A second feeding blade 22 is fitted on the outside of the vibrating main shaft 11 inside the stirring chamber near the inlet of the discharge port 21. A first feeding blade 20 is fitted on the outside of the vibrating main shaft 11 inside the discharge port 21 near the outlet of the discharge port 21.

[0024] Clearly, based on the above, the cooperation between the vibrating spindle 11 and the stirring blades 16, especially through the up-and-down vibrating assembly, achieves efficient stirring and guidance of the material. The main purpose of this design is to ensure uniform mixing of the material during the stirring process and avoid the material scattering problem caused by high-speed rotation in traditional mechanical stirring methods. Through the vertical vibration of the vibrating spindle, the material is evenly distributed within the stirring chamber, ensuring sufficient stirring effect. This design achieves efficient stirring of the material at a lower rotational speed, reducing power requirements and improving operational stability.

[0025] The first feeding blade 20 and the second feeding blade 22 are respectively set on both sides of the discharge port. When the vibrating main shaft 11 is not vibrating, they can block the material and make the material flow out as needed, thereby avoiding material leakage.

[0026] In this embodiment, the stirring blade transmission assembly includes a first gear 6 and a second gear 14. The first gear 6 is located at the upper end of the mounting hole, and the second gear 14 is located on one side of the first gear 6 and meshes with the first gear 6. The upper plate 15 is located at the upper end of the first gear 6 and the second gear 14. The upper plate 15 and the upper cover 4 form a rotating cavity for the first gear 6 and the second gear 14 to rotate. The stirring blade 16 is located at the lower end of the first gear 6. The upper end of the upper plate 15 is provided with a motor 13 at the position corresponding to the second gear 14. The rotating shaft of the motor 13 is connected to the rotating shaft of the second gear 14.

[0027] Obviously, based on the above: the rotation of the shaft of motor 13 can drive gear 2 14 to rotate, and the rotation of gear 2 14 can drive gear 1 6 to rotate, thereby causing the stirring blade 16 to rotate and stir, thus realizing the function of stirring materials.

[0028] In this embodiment, the vibration assembly includes a vibration platform 7 and a vibrator 8. The vibration platform 7 is located above the upper plate 15. Mounting columns are sleeved on both sides of the vibration platform 7. The lower end of the mounting columns is fixed to the upper plate 15. A rubber column connector 12 is sleeved on the outer side of the mounting columns between the vibration platform 7 and the upper plate 15. Vibrators 8 are provided on both sides of the upper end of the vibration platform 7.

[0029] Obviously, based on the above: the vibration platform 7 is set above the upper plate 15 and fixed by the mounting column, the purpose of which is to provide a vibration mounting base and directly transmit the vertical force to the upper end of the vibration main shaft 11; thereby driving the vibration main shaft 11 to vibrate up and down, and the stirring chamber obtains stable vertical excitation.

[0030] A rubber column connector 12 is fitted between the mounting column and the upper plate 15 to form an elastic connection and to guide the platform movement vertically, so that the platform mainly moves up and down, the lateral swing is suppressed, and the excitation direction remains vertical.

[0031] Vibrators 8 are installed on both sides of the upper end of the vibration platform 7. The purpose is to directly generate and input a controllable excitation force to drive the platform to vibrate up and down; so that the vibration main shaft 11 vibrates up and down accordingly.

[0032] In this embodiment, a pipe mounting cavity is provided inside the vibrating spindle 11, and a heating tube is sleeved inside the pipe mounting cavity. A liquid inlet 9 is provided on the side wall of the vibrating spindle 11 at the inlet of the heating tube. The outlet of the heating tube is connected to the inside of the pipe mounting cavity. A liquid outlet 10 is provided at the upper end of the pipe mounting cavity above the vibrating spindle 11.

[0033] Obviously, based on the above: the heating medium enters through the inlet 29 and heats the vibrating spindle 11 through the pipe installation cavity, and then flows out through the outlet 210, forming a closed loop of "inlet-heating-outlet". The temperature is controllable and can directly supply heat to the material around the vibrating spindle 11; thus, the material in the vicinity of the vibrating spindle 11 is continuously heated, the viscosity is reduced, and the stirring and feeding are smoother and more stable.

[0034] In this embodiment, a heating chamber 2 for circulating heating medium is provided inside the side wall of the housing 1. A liquid inlet 19 is provided on one side of the lower end of the heating chamber 2, and a liquid outlet 3 is provided on the other side of the upper end of the heating chamber 2.

[0035] Obviously, based on the above, the heating chamber 2 is configured to provide a surrounding heat exchange channel for the shell 1 and to circulate a heating medium; this allows the chamber wall to heat up evenly, the temperature to be controllable, the material viscosity to be reduced, and the plasticizing and stirring to be smoother.

[0036] In this embodiment, refer to Figure 2 The second feeding blade 22 includes a sleeve shaft with a through hole in the middle and multiple sets of inclined baffles evenly arranged along the side wall of the sleeve shaft. The sleeve shaft is sleeved on the outside of the vibrating main shaft 11, and the material vibration discharge chamber through which the material passes under vibration conditions is formed between two adjacent sets of baffles.

[0037] Obviously, based on the above: multiple sets of inclined baffles form a multi-level baffle surface when the vibrating main shaft 11 is not vibrating, and provide a guiding sliding surface when the vibrating main shaft 11 vibrates. During vibration, the material is loosened along the direction of the baffles and guided to move downward.

[0038] In this embodiment, a temperature measuring component 18 for detecting the temperature of the material inside the stirring chamber is provided on the side wall of the stirring chamber.

[0039] Obviously, based on the above, the temperature measurement component 18 can detect the temperature of the material inside the mixing chamber in real time, and the operator can adjust the temperature inside the vibrating spindle 11 and the heating chamber 2 according to the temperature of the material inside the mixing chamber.

[0040] In this embodiment, a heat insulation layer 17 is provided on the outer side of the shell 1.

[0041] Obviously, based on the above, the insulation layer 17 can prevent heat loss.

[0042] In this embodiment, a sensor for detecting the passage of material is provided at the lower end of the discharge port 21.

[0043] Obviously, based on the above: by detecting the material passing through the sensor, the presence or absence of material in the mixing chamber can be monitored in real time.

[0044] To more clearly illustrate the implementation plan and its effects, we will use the attached diagram as an example:

[0045] This embodiment selects Workshop No. 3 of a plasticized chemical filling production line with complete civilian hazardous materials permits as the application scenario. The workshop has standard explosion-proof and anti-static conditions. From September 15, 2025 to October 10, 2025, production line-level verification was continuously carried out on the same formulation and the same batch of thermoplastic matrix mixed materials. The materials were pre-dried to a volatile content of ≤0.3% before feeding, and the room temperature before feeding was 24–27℃ and the relative humidity was 45–55%.

[0046] In practical application of this scenario, the operator performs pre-shift checks to verify the temperature of each measuring point and the self-test of the sensors. First, the circulating medium in the outer heating chamber 2 is activated to raise the chamber wall temperature to 85±2℃. Then, the heating pipe circuit inside the vibrating spindle 11 is turned on to precisely heat the material near the wall around the spindle. After the temperature measurement component shows that the set temperature has been reached, each batch of pre-treated mixture is slowly fed into the mixing chamber through the feed inlet on the top cover. The mixing mechanism drives the mixing blades at a speed of 20–30 rpm to establish a stable circulation and shear field. After the plasticization uniformity is determined (the sampled viscosity falls within the target range), the operator places the receiving container at the discharge port, keeps the vibration stopped, and quickly switches the receiving device. After the sensor reading confirms that the device is in place, the vibrator 8 is started and operates within the range of 30–36 Hz and 1.5–1.7 mm amplitude. The plastic material is released at a stable rhythm. After the vibration is completed, it is immediately stopped, and the receiving device switches to the next container. This process is repeated until a single batch is completed. Throughout the process, the closed-loop characteristic of no vibration and no material feeding eliminates the risk of material leakage in the "material receiving and changing window", while the vibration-stopping cycle switching ensures continuous material output rather than uncontrolled gushing.

[0047] Based on actual measurement data comparison: With a single pot charge of 244 kg, it takes 11-14 seconds to fill one product using the stirring spindle feeding method, and 8-10 seconds to fill one product using the vibrating spindle feeding method. Taking 122 products as a batch, the stirring spindle feeding takes about 22 minutes, and the vibrating spindle feeding takes about 16 minutes. Excluding auxiliary time, each batch saves about 6 minutes, significantly improving the output and making it easy to achieve multi-stage vibrating blades and multi-head charging control.

[0048] As another embodiment of this application, refer to Figure 3 This embodiment proposes a parallel charging system for plasticizing charging machines, which includes any of the above-mentioned plasticizing charging machine charging devices. The system includes three sets of parallel plasticizing charging machine charging devices. The mixing chambers of the three sets of parallel plasticizing charging machine charging devices are connected in sequence. The upper cover of the two sets of plasticizing charging machine charging devices located on both sides is provided with a feed port 5 at each of the four locations.

[0049] Obviously, based on the above, by setting up multiple plasticizing charging machines in parallel, multiple feeding ports can be achieved, thus improving charging efficiency.

Claims

1. A loading device for a plasticizing loading machine, characterized in that: The device includes a housing (1), a vibrating main shaft (11), and stirring blades (16). The housing (1) has a frustum-shaped stirring chamber inside, and a cylindrical discharge port (21) is provided at the lower end of the stirring chamber. The housing (1) has a top cover (4) at the upper end, and a through mounting hole is provided in the middle of the top cover (4). A stirring blade transmission assembly is provided at the upper end of the mounting hole. The stirring blades (16) are connected to the lower end of the stirring blade transmission assembly. The top cover (4) is provided with an upper plate (15) above the stirring blade transmission assembly. The upper plate (15) is fitted with a vibration component that vibrates vertically. The vibration main shaft (11) is connected to the vibration component. The lower end of the vibration main shaft (11) passes through the stirring chamber and is located in the middle of the discharge port (21). The outer side of the vibration main shaft (11) is fitted with a second feeding blade (22) near the inlet of the discharge port (21) inside the stirring chamber. The outer side of the vibration main shaft (11) is fitted with a first feeding blade (20) near the outlet of the discharge port (21) inside the discharge port (21).

2. The loading device for a plasticizing loading machine according to claim 1, characterized in that: The stirring blade transmission assembly includes a first gear (6) and a second gear (14). The first gear (6) is located at the upper end of the mounting hole. The second gear (14) is located on one side of the first gear (6) and meshes with the first gear (6). The upper plate (15) is located at the upper end of the first gear (6) and the second gear (14). The upper plate (15) and the upper cover (4) form a rotating cavity for the first gear (6) and the second gear (14) to rotate. The stirring blade (16) is located at the lower end of the first gear (6). The upper end of the upper plate (15) is provided with a motor (13) at the position corresponding to the second gear (14). The rotating shaft of the motor (13) is connected to the rotating shaft of the second gear (14) in a transmission connection.

3. The loading device for a plasticizing loading machine according to claim 1, characterized in that: The vibration assembly includes a vibration platform (7) and a vibrator (8). The vibration platform (7) is located above the upper plate (15). Mounting columns are fitted on both sides of the vibration platform (7). The lower end of the mounting column is fixed to the upper plate (15). A rubber column connector (12) is fitted on the outer side of the mounting column between the vibration platform (7) and the upper plate (15). Vibrators (8) are provided on both sides of the upper end of the vibration platform (7).

4. The loading device for a plasticizing loading machine according to claim 1, characterized in that: The vibrating spindle (11) has a pipe mounting cavity inside, and a heating tube is fitted inside the pipe mounting cavity. The side wall of the vibrating spindle (11) has a liquid inlet (9) at the inlet of the heating tube. The outlet of the heating tube is connected to the inside of the pipe mounting cavity. The vibrating spindle (11) has a liquid outlet (10) at the upper end of the pipe mounting cavity.

5. The loading device for a plasticizing loading machine according to claim 1, characterized in that: The side wall of the housing (1) is provided with a heating chamber (2) through which a circulating heating medium is introduced. A liquid inlet (19) is provided on one side of the lower end of the heating chamber (2), and a liquid outlet (3) is provided on the other side of the upper end of the heating chamber (2).

6. The loading device for a plasticizing loading machine according to claim 1, characterized in that: The second feeding blade (22) includes a sleeve shaft with a through hole in the middle and multiple sets of inclined baffles evenly arranged along the side wall of the sleeve shaft. The sleeve shaft is sleeved on the outside of the vibrating main shaft (11), and the material vibration discharge chamber through which the material passes under vibration conditions is formed between two adjacent sets of baffles.

7. The loading device for a plasticizing loading machine according to claim 1, characterized in that: The side wall of the mixing chamber is provided with a temperature measuring component (18) for detecting the temperature of the material inside the mixing chamber.

8. The loading device for a plasticizing loading machine according to claim 1, characterized in that: The outer side of the shell (1) is provided with a heat insulation layer (17).

9. The loading device for a plasticizing loading machine according to claim 1, characterized in that: The lower end of the discharge port (21) is equipped with a sensor for detecting the passage of material.

10. A parallel charging system for a plasticizing charging machine, characterized in that: The system includes a plasticizing loading device as described in any one of claims 1-9, wherein the system comprises three sets of the plasticizing loading devices arranged in parallel, the mixing chambers of the three sets of the plasticizing loading devices arranged in parallel are connected in sequence, and the upper cover (4) of the two sets of plasticizing loading devices located on both sides is provided with a feed port (5).

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