Injection material mixing device and injection molding machine

Abstract

This utility model discloses an injection molding raw material mixing device and an injection molding machine. The injection molding raw material mixing device includes a mixing tank, at least two sets of feeding modules, and a control module. A first stirring mechanism is installed inside the mixing tank. The feeding modules include a hopper, a screw feeding mechanism, and a metering tank. The bottom of the hopper has a first discharge port. The screw feeding mechanism includes a housing with a second inlet and a second outlet at each end, a conveying screw rotatably installed within the housing, and a first driving structure for driving the conveying screw to rotate. The first outlet is connected to the second inlet and is equipped with a first electrically controlled valve. A first sensor for detecting the raw material storage level is installed inside the metering tank. The metering tank has a third inlet and a third outlet. The second outlet is connected to the third inlet and is equipped with a second electrically controlled valve. The third outlet is connected to the mixing tank and is equipped with a third electrically controlled valve. This utility model embodiment can achieve automatic and accurate metering and conveying of raw materials, and efficient mixing.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to an injection molding raw material mixing device and an injection molding machine. Background Technology

[0002] In injection molding production, raw materials need to be mixed evenly in proportion to ensure product quality. Traditional methods often involve manual weighing and feeding, which is not only inefficient and labor-intensive, but also prone to inaccurate proportions due to human error, affecting product consistency, and also causes problems such as dust pollution.

[0003] While some existing automatic mixing devices achieve automatic material delivery, they often lack precise metering control, making it difficult to dynamically adjust the feed rate according to actual needs. This is especially true when handling raw materials with varying flowability or those requiring trace amounts, which can easily lead to uneven feeding and inaccurate metering. Furthermore, the mixing effect is limited, the system's automation level is low, and the coordination between components is poor, still requiring considerable manual intervention.

[0004] Therefore, it is necessary to design a device that can achieve automatic and accurate metering and conveying of raw materials, and efficient mixing, in order to improve mixing accuracy, uniformity and production automation level. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an injection molding raw material mixing device that can realize automatic and accurate metering and conveying of raw materials, and efficient mixing.

[0006] This utility model also proposes an injection molding machine that uses the above-mentioned injection molding raw material mixing device.

[0007] According to a first aspect of the present invention, an injection molding raw material mixing device includes a mixing tank, at least two sets of feeding modules, and a control module. The mixing tank contains a first stirring mechanism. The feeding module includes a hopper, a screw feeding mechanism, and a metering tank. The bottom of the hopper has a first discharge port. The screw feeding mechanism includes a housing with a second inlet and a second outlet at each end, a conveying screw rotatably disposed within the housing, and a first driving structure for driving the conveying screw to rotate. The first outlet is connected to the second inlet and is equipped with a first electrically controlled valve. The metering tank contains a first sensor for detecting the amount of raw material stored. The metering tank has a third inlet and a third outlet. The second outlet is connected to the third inlet and is equipped with a second electrically controlled valve. The third outlet is connected to the mixing tank and is equipped with a third electrically controlled valve. The first stirring mechanism, the first driving structure, the first electrically controlled valve, the second electrically controlled valve, and the third electrically controlled valve are all electrically connected to the control module.

[0008] The injection molding raw material mixing device according to the above embodiments of the present invention has at least the following beneficial effects: The injection molding raw material mixing device provided in this embodiment of the invention, through the coordinated operation of a metering tank equipped with a first sensor and various electrically controlled valves and screw feeding mechanisms, can detect the raw material storage volume in real time. The control module precisely controls the amount and timing of each raw material's addition, significantly improving batch-to-batch accuracy, reducing human error, and ensuring consistency between batches. By employing an independent first stirring mechanism to thoroughly stir the raw materials in the mixing tank, combined with a step-by-step, quantitative feeding method, the device avoids the problems of raw material accumulation or uneven mixing caused by a single addition, effectively improving mixing uniformity and efficiency. Multiple feeding modules can work simultaneously or sequentially, realizing automatic feeding, metering, and conveying of various raw materials. The entire process is centrally controlled by the control module, reducing manual intervention and achieving continuous and automated operation from material supply to mixing, thus improving production efficiency. By setting electrically controlled valves at each connection node, segmented control of raw material flow is achieved, preventing raw material backflow or cross-contamination. The screw feeding mechanism can stably convey raw materials with different flowability, exhibiting strong adaptability. The system can flexibly adjust control parameters according to different formulations, making it widely applicable. On the other hand, the fully enclosed conveying and mixing structure effectively reduces dust spillage, lowers environmental pollution and raw material waste, and improves workshop cleanliness and operational safety. In summary, the injection molding raw material mixing device provided by this utility model has advantages such as precise batching, uniform mixing, high automation, simple operation, and strong applicability. It can be widely used in various injection molding production processes and has good practical value and promising prospects for promotion.

[0009] According to some embodiments of the present invention, the top of the hopper is provided with a first feed inlet, the first feed inlet is connected to a raw material replenishment module, and a second sensor for detecting the remaining amount of raw material is provided inside the hopper. Both the raw material replenishment module and the second sensor are electrically connected to the control module.

[0010] According to some embodiments of the present invention, the first stirring mechanism includes a first drive motor, a first stirring shaft and a plurality of first stirring blades. The first drive motor is fixedly installed on the mixing box and electrically connected to the control module. The first stirring shaft is disposed in the mixing box and connected to the first drive motor. The plurality of first stirring blades are respectively fixedly connected to both sides of the first stirring shaft and are symmetrically distributed.

[0011] According to some embodiments of the present invention, a scraper is provided at the end of the first stirring blade, and the scraper can contact the inner wall of the mixing tank.

[0012] According to some embodiments of the present invention, a second stirring mechanism is provided inside the hopper, and the second stirring mechanism is electrically connected to the control module.

[0013] According to some embodiments of the present invention, the second stirring mechanism includes a second drive motor, a second stirring shaft and a plurality of second stirring blades. The second drive motor is fixedly installed on the hopper and electrically connected to the control module. The second stirring shaft is disposed inside the hopper and connected to the second drive motor. The plurality of second stirring blades are respectively fixedly connected to both sides of the second stirring shaft and are symmetrically distributed.

[0014] According to some embodiments of the present invention, the second stirring mechanism further includes two auxiliary stirring blades, which are symmetrically connected to the bottom end of the second stirring shaft, and the auxiliary stirring blades are inclined downward.

[0015] An injection molding machine according to a first aspect of the present invention includes the injection molding material mixing device described in any embodiment of the first aspect.

[0016] The injection molding machine according to the above embodiments of the present invention has at least the following beneficial effects: The injection molding machine provided in this embodiment of the invention is equipped with an injection molding raw material mixing device connected to its feeding position. This mixing device, through the coordinated operation of a metering tank equipped with a first sensor, various electrically controlled valves, and a screw feeding mechanism, can detect the raw material storage level in real time. The control module precisely controls the amount and timing of each raw material's addition, significantly improving batch-to-batch accuracy, reducing human error, and ensuring consistency between batches. By employing an independent first stirring mechanism to thoroughly stir the raw materials in the mixing tank, combined with a step-by-step, quantitative feeding method, the problem of raw material accumulation or uneven mixing due to a single addition is avoided, effectively improving mixing uniformity and efficiency. Multiple feeding modules can work simultaneously or sequentially, realizing automatic feeding, metering, and conveying of various raw materials. The entire process is centrally controlled by the control module, reducing manual intervention and achieving continuous, automated operation from feeding to mixing, thus improving production efficiency. By setting electrically controlled valves at each connection node, segmented control of raw material flow is achieved, preventing raw material backflow or cross-contamination. The screw feeding mechanism can stably convey raw materials with different flowability, exhibiting strong adaptability. The system can flexibly adjust control parameters according to different formulations, making it widely applicable. On the other hand, the fully enclosed conveying and mixing structure effectively reduces dust spillage, environmental pollution and raw material waste, and improves workshop cleanliness and operational safety.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1This is a schematic diagram of the structure of the injection molding raw material mixing device according to some embodiments of the present invention; Figure 2 This is a schematic diagram of the structure of the mixing box in some embodiments of the present invention; In the attached figures, the following labels are used: Mixing tank 100; first drive motor 110; first stirring shaft 120; first stirring blade 130; scraper 140; Hopper 200; First solenoid valve 210; Second sensor 220; Second drive motor 230; Second stirring shaft 240; Second stirring blade 250; Auxiliary stirring blade 260; Screw feeding mechanism 300; housing 310; conveying screw 320; first drive structure 330; second electric control valve 340; Metering tank 400; Third solenoid valve 410; Raw material replenishment module 500. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Reference Figure 1 According to the present invention, an injection molding raw material mixing device includes a mixing tank 100, at least two sets of feeding modules, and a control module. The mixing tank 100 is equipped with a first stirring mechanism. The feeding module includes a hopper 200, a screw feeding mechanism 300, and a metering tank 400. The bottom of the hopper 200 has a first discharge port. The screw feeding mechanism 300 includes a housing 310 with a second inlet and a second outlet at each end, a conveying screw 320 rotatably disposed within the housing 310, and a first driving structure 330 for driving the conveying screw 320 to rotate. A drive structure 330 may be a motor. A first discharge port is connected to a second inlet and is equipped with a first electrically controlled valve 210. A first sensor for detecting the amount of raw materials stored is installed inside the metering tank 400. The metering tank 400 has a third inlet and a third discharge port. The second discharge port is connected to the third inlet and is equipped with a second electrically controlled valve 340. The third discharge port is connected to the mixing tank 100 and is equipped with a third electrically controlled valve 410. The first stirring mechanism, the first drive structure 330, the first electrically controlled valve 210, the second electrically controlled valve 340, and the third electrically controlled valve 410 are all electrically connected to the control module.

[0024] It is understood that the injection molding raw material mixing device provided in this embodiment of the present invention, through the coordinated operation of a metering tank 400 equipped with a first sensor and various electrically controlled valves and screw feeding mechanisms 300, can detect the raw material storage volume in real time, and the control module can precisely control the amount and timing of each raw material, significantly improving the batching accuracy, reducing human error, and ensuring batch consistency. By employing an independent first stirring mechanism to fully stir the raw materials in the mixing tank 100, combined with a step-by-step, quantitative feeding method, the problem of raw material accumulation or uneven mixing due to one-time input is avoided, effectively improving mixing uniformity and efficiency. Multiple feeding modules can work simultaneously or sequentially to realize automatic feeding, metering, and conveying of various raw materials. The entire process is centrally controlled by the control module, reducing manual intervention and realizing continuous and automated operation from feeding to mixing, thereby improving production efficiency. By setting electrically controlled valves at each connection node, segmented control of raw material flow is achieved to prevent raw material backflow or cross-contamination; the screw feeding mechanism 300 can stably convey raw materials with different flowability, with strong adaptability; the system can flexibly adjust control parameters according to different formulas, with a wide range of applications. On the other hand, the fully enclosed conveying and mixing structure effectively reduces dust spillage, lowers environmental pollution and raw material waste, and improves workshop cleanliness and operational safety. In summary, the injection molding raw material mixing device provided by this utility model has advantages such as precise batching, uniform mixing, high automation, simple operation, and strong applicability. It can be widely used in various injection molding production processes and has good practical value and promising prospects for promotion.

[0025] Specifically, in this embodiment of the invention, the first sensor can be a weighing sensor. The metering tank 400 is fixed to the weighing sensor via a support (such as a three- or four-point support) to directly measure the total weight of the tank and the raw materials. This method offers high measurement accuracy, enables gravimetric quantitative control, allows for real-time dynamic weighing, supports "loss-in-weight" or "incremental" metering, and provides a stable signal that is easy to connect to a control module (PLC or controller). Alternatively, the first sensor can be a level sensor used to detect the height or filling level of the raw materials in the metering tank 400. This includes capacitive level sensors that determine the level based on capacitance changes caused by the difference in dielectric constant between the material and air, and ultrasonic level sensors that calculate the material level by emitting ultrasonic waves and receiving echoes, using the time difference. If the metering tank 400 is a closed structure with a pressure-bearing structure at the bottom, the first sensor can also be a pressure sensor to indirectly estimate the material weight.

[0026] Furthermore, refer to Figure 1 According to some embodiments of the present invention, the top of the hopper 200 is provided with a first feed inlet, the first feed inlet is connected to a raw material replenishment module 500, and a second sensor 220 for detecting the remaining amount of raw material is provided inside the hopper 200. Both the raw material replenishment module 500 and the second sensor 220 are electrically connected to the control module.

[0027] Understandably, by installing a raw material replenishment module 500 at the top of the hopper 200 and cooperating with the second sensor 220 to monitor the remaining raw material level in the hopper 200 in real time, automatic raw material replenishment is achieved. When the second sensor 220 detects that the raw material level in the hopper 200 is lower than a set value, the control module automatically activates the raw material replenishment module 500 to add material, avoiding supply interruptions due to insufficient raw materials, ensuring stable operation of continuous production, and further improving the automation level and production efficiency of the device.

[0028] Specifically, in this embodiment of the invention, the raw material replenishment module 500 can be an automatic feeder (vacuum feeder), which includes a vacuum pump (or fan), a feeding pipe, a discharging pipe, a storage hopper (or directly connected to the raw material packaging), a pneumatic or electric butterfly valve, a filter device, etc. The vacuum pump generates negative pressure, drawing the raw material from the storage container (such as a ton bag, small bag, dryer, etc.) into the hopper 200 through the feeding pipe. When the second sensor 220 detects a low material level, the control module starts the vacuum feeder, and automatically stops after feeding is complete. The raw material replenishment module 500 can also employ a screw feeding system, a belt / bucket elevator replenishment system, etc., which will not be elaborated further here.

[0029] Specifically, in this embodiment of the invention, the second sensor 220 can be a level switch (point detection), including a tuning fork level switch that detects whether material is in contact with the fork body by changes in vibration frequency; a capacitive proximity switch / level switch that triggers a switch signal by changing the capacitance value when material approaches; and a rotary (rotary paddle) level switch that uses a motor to drive the blades to rotate, and activates a microswitch when material accumulates and obstructs the blades' rotation. The second sensor 220 can also be a continuous level sensor (analog output), including an ultrasonic level sensor that calculates the distance to the material surface by emitting ultrasonic waves and receiving the echo; and a radar level gauge (guided wave radar or non-contact radar) that measures distance by electromagnetic wave reflection. The second sensor 220 can also adopt other structural methods, which can be determined according to the actual situation and will not be elaborated here.

[0030] Preferably, in this embodiment of the present invention, the second sensor 220 is a tuning fork level switch or an ultrasonic level sensor, which is installed on the side wall or top of the hopper 200 to detect the remaining amount of raw material in the hopper 200. When the raw material is detected to be lower than the set threshold, a signal is sent to the control module to trigger the raw material replenishment module 500 to automatically add material.

[0031] Furthermore, refer to Figure 1 and Figure 2According to some embodiments of the present invention, the first stirring mechanism includes a first drive motor 110, a first stirring shaft 120 and a plurality of first stirring blades 130. The first drive motor 110 is fixedly installed on the mixing box 100 and is electrically connected to the control module. The first stirring shaft 120 is disposed in the mixing box 100 and connected to the first drive motor 110. The plurality of first stirring blades 130 are respectively fixedly connected to both sides of the first stirring shaft 120 and are symmetrically distributed.

[0032] Understandably, the first stirring mechanism employs a first stirring shaft 120 driven by a first drive motor 110 and multiple symmetrically distributed first stirring blades 130, resulting in a stable structure and uniform stirring force. The symmetrically arranged first stirring blades 130 experience balanced forces during rotation, reducing vibration and extending equipment lifespan. Simultaneously, they effectively break up agglomerated raw material particles, enhancing lateral and longitudinal material flow and significantly improving mixing uniformity and stirring efficiency within the mixing tank 100. The first drive motor 110 is connected to the control module, facilitating intelligent control of parameters such as start / stop and speed.

[0033] Furthermore, refer to Figure 2 According to some embodiments of the present invention, a scraper 140 is provided at the end of the first stirring blade 130, and the scraper 140 can contact the inner wall of the mixing box 100.

[0034] It is understandable that by providing a scraper 140 at the end of the first stirring blade 130 that can contact the inner wall of the mixing tank 100, the raw materials adhering to the inner wall of the mixing tank 100 can be scraped off during the mixing process, preventing the materials from sticking to the wall, accumulating or clumping, ensuring that all raw materials participate in the mixing, improving the uniformity of mixing and the integrity of the output, reducing residue, and also facilitating subsequent cleaning and maintenance, avoiding cross-contamination between different batches of raw materials.

[0035] Furthermore, refer to Figure 1 According to some embodiments of the present invention, a second stirring mechanism is provided inside the hopper 200. The second stirring mechanism is electrically connected to the control module. The second stirring mechanism includes a second drive motor 230, a second stirring shaft 240, and a plurality of second stirring blades 250. The second drive motor 230 is fixedly installed on the hopper 200 and is electrically connected to the control module. The second stirring shaft 240 is located inside the hopper 200 and connected to the second drive motor 230. The plurality of second stirring blades 250 are respectively fixedly connected to both sides of the second stirring shaft 240 and are symmetrically distributed.

[0036] Understandably, by adding a second stirring mechanism within the hopper 200, the smooth flow of material feeding can be effectively prevented due to bridging and blockage in the hopper 200, especially suitable for plastic particles or powders that are prone to moisture absorption and clumping or have poor flowability. The second stirring mechanism is controlled in conjunction with the feeding process via a control module, ensuring a continuous and stable flow of material into the screw feeder 300, thus improving the reliability and stability of the entire feeding system. The second stirring mechanism uses a second drive motor 230 to drive a second stirring shaft 240 and multiple symmetrically distributed second stirring blades 250, resulting in a reasonable structure and smooth operation. The symmetrically arranged second stirring blades 250 create a balanced turbulent flow field within the hopper 200, effectively breaking down static friction and agglomeration between materials, promoting uniform material descent, avoiding flow deviation or blockage, ensuring metering accuracy and continuous feeding, and reducing equipment failure rate.

[0037] Furthermore, refer to Figure 1 According to some embodiments of the present invention, the second stirring mechanism further includes two auxiliary stirring blades 260, which are symmetrically connected to the bottom end of the second stirring shaft 240 and are inclined downward.

[0038] It is understandable that by symmetrically setting downward-sloping auxiliary stirring blades 260 at the bottom end of the second stirring shaft 240, the raw material can be further guided to flow towards the first discharge port at the bottom of the hopper 200 at the end of the stirring, playing a "guiding" and "propelling" role. Especially in the discharge stage, it can effectively prevent the raw material from accumulating or stagnating near the first discharge port, speed up the discharge speed, improve the feeding response and accuracy, and further optimize the dynamic performance of the feeding process.

[0039] Furthermore, according to some embodiments of the present invention, the feeding module is provided in two sets and symmetrically arranged on both sides of the mixing box 100, wherein the two sets of feeding modules are used to transport different raw materials (such as resin and functional additives).

[0040] Understandably, the two sets of feeding modules feed synchronously or alternately from both sides of the mixing tank 100, allowing different raw materials to enter the mixing tank 100 from multiple directions. This effectively avoids the problems of material concentration, accumulation, or uneven distribution in the early stages of mixing caused by single-sided feeding, thus improving the initial uniformity of mixing. Symmetrical feeding creates a reasonable material flow field, promoting convection and diffusion of raw materials within the mixing tank 100. Combined with the stirring mechanism, this enables faster and more uniform mixing, shortens the mixing cycle, and improves production efficiency. The symmetrical arrangement ensures more balanced forces during feeding and stirring, effectively reducing vibration and noise caused by uneven loading, improving the stability and reliability of equipment operation, and extending the overall service life of the machine. When mixing two or more raw materials, each set of feeding modules can independently correspond to one main material or formulation component. The control module precisely coordinates the feeding sequence and dosage of each module to achieve accurate proportioning and orderly feeding, improving the level of automation control. The symmetrical design makes the overall structure of the device compact and the layout balanced, which not only facilitates integration with other equipment (such as injection molding machines) but also facilitates the reasonable layout and maintenance of the production line.

[0041] It should be noted that in this embodiment of the utility model, the feeding module is not limited to two sets, but can also be three sets, four sets or other quantities. The arrangement is based on symmetrical distribution, which will not be elaborated here.

[0042] According to the present invention, an injection molding machine includes a raw material mixing device of any of the above embodiments. Specifically, in practical applications, the injection molding machine is usually provided with a main feed pipe at the feeding position, and the bottom of the mixing tank 100 is provided with a main discharge port (not shown in the figure) connected to the main feed pipe to realize material supply. The main feed pipe may be equipped with an electrically controlled valve or a metering pump, etc., which will not be described in detail here.

[0043] Since the injection molding machine adopts all the above-mentioned technical solutions, it should have the same beneficial effects, which will not be elaborated here.

[0044] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A mixing device for injection molding raw materials, characterized in that, include: A mixing tank, wherein a first stirring mechanism is provided inside the mixing tank; At least two sets of feeding modules are provided. Each feeding module includes a hopper, a screw feeding mechanism, and a metering tank. The bottom of the hopper is provided with a first discharge port. The screw feeding mechanism includes a housing with a second inlet and a second outlet at each end, a conveying screw rotatably disposed within the housing, and a first driving structure for driving the conveying screw to rotate. The first outlet is connected to the second inlet and is provided with a first electrically controlled valve. The metering tank is provided with a first sensor for detecting the amount of raw materials stored. The metering tank has a third inlet and a third outlet. The second outlet is connected to the third inlet and is provided with a second electrically controlled valve. The third outlet is connected to the mixing tank and is provided with a third electrically controlled valve. The control module includes the first stirring mechanism, the first drive structure, the first electrically controlled valve, the second electrically controlled valve, and the third electrically controlled valve, all of which are electrically connected to the control module.

2. The injection molding raw material mixing device according to claim 1, characterized in that, The top of the hopper is provided with a first feed inlet, which is connected to a raw material replenishment module. A second sensor for detecting the remaining amount of raw material is provided inside the hopper. Both the raw material replenishment module and the second sensor are electrically connected to the control module.

3. The injection molding raw material mixing device according to claim 1, characterized in that, The first stirring mechanism includes a first drive motor, a first stirring shaft, and a plurality of first stirring blades. The first drive motor is fixedly installed on the mixing tank and is electrically connected to the control module. The first stirring shaft is located inside the mixing tank and connected to the first drive motor. The plurality of first stirring blades are respectively fixedly connected to both sides of the first stirring shaft and are symmetrically distributed.

4. The injection molding raw material mixing device according to claim 3, characterized in that, The end of the first stirring blade is provided with a scraper, which can contact the inner wall of the mixing tank.

5. The injection molding raw material mixing device according to claim 1, characterized in that, The hopper is equipped with a second stirring mechanism, which is electrically connected to the control module.

6. The injection molding raw material mixing device according to claim 5, characterized in that, The second stirring mechanism includes a second drive motor, a second stirring shaft, and a plurality of second stirring blades. The second drive motor is fixedly installed on the hopper and electrically connected to the control module. The second stirring shaft is located inside the hopper and connected to the second drive motor. The plurality of second stirring blades are respectively fixedly connected to both sides of the second stirring shaft and are symmetrically distributed.

7. The injection molding raw material mixing device according to claim 6, characterized in that, The second stirring mechanism also includes two auxiliary stirring blades, which are symmetrically connected to the bottom end of the second stirring shaft and are inclined downwards.

8. An injection molding machine, characterized in that, Includes the injection molding material mixing device as described in any one of claims 1 to 7.

Images