Plastic particle mixing and color matching device based on toner weight

Abstract

The utility model discloses a plastic particle mixing and color matching device based on toner weight, and relates to the field of injection molding production. The mixing and color matching device comprises a material mixing assembly, at least one toner delivery assembly which is mounted on the material mixing assembly and delivers toner to the material mixing assembly for matching based on weight, and a controller for controlling the material mixing assembly and the toner delivery assembly to work, the mixing assembly is used for mixing and stirring quantitative plastic particles and at least one toner fed by the toner delivery assembly to complete color matching and mixing of the plastic particles; the toner delivery assembly comprises a weighing module used for weighing the weight of delivered toner, the toner delivery device is internally provided with the weighing module, and the toner is fed into the mixing assembly based on the weight. According to the color matching device, through a weight metering mode, the amount of toner supplied each time can be accurately controlled, the problems of errors and fluctuation of constant-volume type toner supply are avoided, meanwhile, toner caking is avoided, and the mixing uniformity of the toner and basic plastic particles is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of injection molding production, and particularly to a plastic particle mixing and color matching device based on toner weight. BACKGROUND

[0002] In the existing plastic injection molding process, especially in the production of non-transparent colored plastic products, two main color control methods are commonly used: one is to use color masterbatch, and the other is to mix color powder with base plastic particles. Color masterbatch is a precisely proportioned granular mixture formed by uniformly mixing base plastic and colorant, which has strong color stability and can ensure the color consistency of the final injection molded product. However, the cost of color masterbatch is relatively high, especially when switching between multiple colors frequently or producing in large quantities, the increased cost limits its application in cost-sensitive production environments. In contrast, color powder has lower usage cost and can achieve color control through mixing with base plastic particles, so it has been widely used in many production fields.

[0003] Although the color powder mixing method has certain economic advantages, in actual application, the supply and mixing precision of color powder are always key challenges in the injection molding process. The supply amount and uniformity of mixing with base plastic directly determine the color effect of the final product, but the commonly used fixed volume powder supply method has significant defects. In the traditional fixed volume powder supply device, color powder is transported through the cooperation of gears and fixed plate parts, and the gear groove is used as a fixed volume cavity to send color powder out of the storage cavity. Although this structure is simple and easy to implement, its supply precision often cannot meet the strict production requirements.

[0004] Firstly, the fixed volume powder supply device has the problem of low transportation precision. The principle of gear powder feeding relies on the rotation of the gear to control the output amount of color powder, but the small gap between the gear and the fixed plate part makes the amount of color powder transported each time different. Due to mechanical errors between the gear and the groove and uneven distribution of color powder in the groove, the output amount may fluctuate between different batches. This fluctuation is particularly evident in continuous production, and the cumulative effect over a long period of time may cause unstable color powder supply, thereby affecting the color consistency and quality of the final plastic product.

[0005] Secondly, the existing fixed volume cavity structure is prone to extruding color powder, especially when the gear is rotating, the color powder may be clumped under mechanical pressure. This clumping phenomenon is particularly serious when the color powder particles are fine, further affecting the uniformity of mixing color powder with base plastic. The existence of clumps not only makes the color powder unable to disperse fully, but also may cause color spots and color differences in the injection molding process, seriously affecting the appearance quality of the product and reducing its market competitiveness.

[0006] In addition, the traditional fixed-quantity toner supply device is difficult to realize real-time dynamic adjustment of the toner supply amount. In the production process, the physical properties of the base plastic may change due to batch differences, humidity changes and other factors, so that the supply amount of toner needs to be flexibly adjusted. However, due to the fixedness of the mechanical structure of the existing fixed-quantity toner supply device, it is difficult to achieve accurate dynamic adjustment, which not only leads to lag in color control, but also increases manual intervention in the production process, thereby affecting production efficiency and product qualification rate.

[0007] In view of the deficiencies of the prior art in toner supply and mixing precision, it is of great practical significance to develop a toner delivery assembly based on weight measurement. Content of the utility model

[0008] The purpose of the present application is to overcome at least one deficiency of the prior art, provide a plastic particle mixing and color matching device based on toner weight, which can accurately control the amount of toner supplied each time through weight measurement, avoid the error and fluctuation of fixed-quantity toner supply, avoid toner clumping, improve the mixing uniformity of toner and base plastic particles, and effectively improve the color consistency and production efficiency of injection molded products.

[0009] To achieve the above-mentioned purpose, the present application discloses a plastic particle mixing and color matching device based on toner weight, which comprises a mixing assembly, at least one toner delivery assembly installed on the mixing assembly and delivering toner based on weight to the mixing assembly, and a controller for controlling the operation of the mixing assembly and the toner delivery assembly. The mixing assembly is used to supply a certain amount of plastic particles and mix at least one toner delivered by the toner delivery assembly to complete the color matching and mixing of the plastic particles. The toner delivery assembly comprises a weighing module for weighing the weight of the delivered toner. The toner delivery assembly has a built-in weighing module and delivers toner into the mixing assembly based on weight.

[0010] As an optional technical solution, the mixing assembly comprises a body, a constant-volume bin, a mixing bin and a discharge bin arranged from top to bottom in the body, wherein the constant-volume bin is provided with a particle inlet with an opening and closing control mechanism at the upper end, and the lower end of the constant-volume bin is connected to the upper end of the mixing bin through a connecting opening with a flap type opening and closing mechanism; a stirring rod is arranged in the mixing bin, which is driven to rotate and stir by an external stirring drive unit; the upper end of the mixing bin is also provided with a powder inlet for powder; the lower end of the mixing bin is connected to the discharge bin through a connecting opening with a flap type opening and closing mechanism; and the lower end of the discharge bin is provided with a mixed material outlet.

[0011] Based on the above-mentioned mixing assembly, further, the constant-volume bin, the mixing bin and the discharge bin all have openable bin doors for easy cleaning of the bins.

[0012] Further to the above mixing assembly, the constant volume bin, the mixing bin and the discharge bin are each provided with an observation window for observing the inside of the bin.

[0013] Further to the above mixing assembly, the lower part of the bin chamber of the constant volume bin and the mixing bin is tapered towards the connecting opening, so that the inner wall of the bin chamber forms a tapered path or an arcuate path towards the connecting opening.

[0014] Further to the above mixing assembly, the mixing bin is circular or inverted D-shaped.

[0015] Further to the above mixing assembly, the opening and closing control mechanism in the constant volume bin is a push-pull type opening and closing mechanism, which includes a base plate provided in the granular material inlet and having a horizontal guide slot, a horizontal valve plate horizontally inserted into the base plate, and a driving unit for driving the horizontal valve plate to move along a horizontal straight line.

[0016] Further to the above mixing assembly, the mixing bin is provided with a detachable lining structure, which facilitates quick cleaning of the mixing bin.

[0017] Further to the above mixing assembly, the flap type opening and closing mechanism includes a base shaft, a flap connected to the base shaft, and a rotary driving unit for driving the base shaft to rotate, and in operation, the base shaft is rotated by the rotary driving unit, thereby realizing opening and closing control of the connecting opening by the flap.

[0018] Further to the above mixing assembly, the flap type opening and closing mechanism for controlling the mixing bin and the discharge bin is located at one side of the discharge bin, and the base shaft avoids the connecting opening.

[0019] As an optional technical solution, the toner delivery assembly includes a gravimetric discharge mechanism and a vibrating feeding mechanism in positional cooperation with the gravimetric discharge mechanism, wherein the vibrating feeding mechanism includes a vibration source, a discharge pipe / tank vibrated by the vibration source, which is inclined upward along the material conveying direction based on the horizontal direction, so that it can prevent the material from sliding by itself by using the gravity effect in a static state, and can overcome the gravity to gradually convey the material along the inclined direction under the action of vibration to the outlet of the gravimetric discharge mechanism; the gravimetric discharge mechanism includes a rotary driving mechanism, a weighing module installed on the rotary end of the rotary driving mechanism, and an open container in detachable cooperation with the weighing module, which is in positional cooperation with the outlet of the vibrating feeding mechanism in an initial position and is used for temporarily storing the material discharged from the outlet; the weighing module is used for weighing the weight of the open container; the rotary driving mechanism drives the open container to rotate by a specified angle, and the open container is reset after the material in the open container is poured into the mixing assembly.

[0020] On the basis of the toner delivery assembly described above, further said, the vibrating feeder mechanism also includes a hopper for feeding the discharge pipe / tank, the hopper is used to store toner.

[0021] On the basis of the toner delivery assembly described above, further said, the discharge pipe / tank is detachably connected with the vibration source, facilitating the cleaning of the discharge pipe / tank after disassembly.

[0022] On the basis of the toner delivery assembly described above, further said, the vibrating feeder mechanism is slidingly installed on a linear slide rail with locking, and the discharge pipe / tank can approach or move away from the weighing discharge mechanism along the linear slide rail, facilitating the cleaning of the discharge pipe / tank after disassembly.

[0023] On the basis of the toner delivery assembly described above, further said, the discharge pipe / tank is inserted with a detachable limiting plate near the opening, which is used to adjust and control the caliber of the material flow path at the outlet, preventing the material from accumulating at the outlet during horizontal inertial motion. By limiting the range of material flow, the limiting plate ensures stable discharge during vibration and avoids unstable vibration and uneven discharge caused by accumulated material.

[0024] On the basis of the toner delivery assembly described above, further said, the weighing module includes a base with a plug-in interface and a weighing sensor located in the base, wherein the base is driven by a rotary drive mechanism to realize reciprocating rotation and reset, and the opening container has a plug-in piece matched with the plug-in interface, the plug-in piece and the plug-in interface are plug-in combination and separation, when matched, the plug-in piece of the opening container is inserted into the plug-in opening and directly or indirectly in mechanical contact with the weighing sensor, thereby realizing the transmission and measurement of weight.

[0025] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0026] 1. Accurate control of toner supply amount: The toner delivery assembly based on weight measurement provided by the present application can accurately control the amount of toner supplied each time, avoiding errors and fluctuations in traditional fixed volume powder supply devices, thereby significantly improving the color consistency and stability of injection molded products.

[0027] 2. Improve mixing uniformity: Since the toner is supplied by weight measurement, the toner can be uniformly mixed with the base plastic particles, avoiding uneven mixing caused by caking and other reasons in traditional powder supply devices, thereby improving the quality of the final product and avoiding the appearance of color spots and color differences.

[0028] 3. Improve production efficiency: Accurate toner supply and good mixing effect can reduce rework or waste caused by color fluctuations or quality problems, thereby improving production efficiency and product qualification rate, and reducing production cost.

[0029] 4. Easy to clean and maintain: The design of the device takes into account the convenience of cleaning and maintenance. The mixing assembly and toner delivery assembly have openable bin doors and observation windows, and the parts can be disassembled, making it easy to clean and replace, reducing downtime, and improving the service life and continuity of production of the equipment.

[0030] The above-listed benefits are not exhaustive of all advantages. Other potential benefits and detailed technical implementations will be further disclosed in the embodiments or other description sections of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] Aspects of the present disclosure will become more fully understood from the detailed description and accompanying drawings, in which the structures of the respective structures shown in the drawings are sometimes shown with exaggerated positions, sizes, and ranges, etc. In the drawings:

[0032] Figure 1 is a structural schematic diagram of an embodiment of the present disclosure.

[0033] Figure 2 is a structural schematic diagram of an embodiment of the present disclosure from another perspective.

[0034] Figure 3 is a structural schematic diagram of an embodiment of the present disclosure from yet another perspective.

[0035] Figure 4 is a structural schematic diagram of an embodiment of the present disclosure from other perspectives.

[0036] Figure 5 is a structural schematic diagram of an embodiment of the present disclosure after the bin door is opened.

[0037] Figure 6 is a structural schematic diagram of an embodiment of the present disclosure from another perspective after the bin door is opened.

[0038] Figure 7 is a structural schematic diagram of a mixing assembly in an embodiment of the present disclosure after the bin door is opened.

[0039] Figure 8 is a structural schematic diagram of a mixing assembly in an embodiment of the present disclosure in a partially exploded state.

[0040] Figure 9 is a structural schematic diagram of a stirring rod in a mixing assembly in an embodiment of the present disclosure.

[0041] Figure 10 is a structural schematic diagram of a toner delivery assembly in an embodiment of the present disclosure.

[0042] Figure 11Figure 1 is a perspective view of a toner delivery assembly according to an embodiment of the present disclosure.

[0043] Figure 12 Figure 2 is a perspective view of a toner delivery assembly according to an embodiment of the present disclosure.

[0044] Figure 13 Figure 3 is a perspective view of a vibrating feed mechanism in a toner delivery assembly according to an embodiment of the present disclosure.

[0045] Figure 14 Figure 4 is an exploded view of a vibrating feed mechanism in a toner delivery assembly according to an embodiment of the present disclosure.

[0046] Figure 15 Figure 5 is a cross-sectional view of a discharge tube of a vibrating feed mechanism in a toner delivery assembly according to an embodiment of the present disclosure.

[0047] Figure 16 Figure 6 is a perspective view of a gravimetric discharge mechanism in a toner delivery assembly according to an embodiment of the present disclosure.

[0048] Figure 17 Figure 7 is a perspective view of an open container in a toner delivery assembly according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0049] The present disclosure will now be described with reference to the attached figures. The figures show several embodiments of the present disclosure. It is understood that the present disclosure can be presented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in a variety of ways, providing additional embodiments.

[0050] It is understood that, in all figures, like reference numerals indicate like elements. In the figures, the dimensions of certain features can be exaggerated for clarity.

[0051] It is to be understood that the phraseology and terminology employed herein are for the purpose of description and not of limitation. All technical and scientific terms used herein are to be interpreted in accordance with their ordinary meaning unless otherwise defined. For the purposes of the present disclosure, the following terms are intended to have the meanings presented below:

[0052] As used in the specification, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. The terms "comprises," "comprising," "includes," "including," and "contains," as used in the specification, mean that there are contained, but do not necessarily exclude, the presence of one or more additional features. The term "and / or" as used in the specification includes any and all combinations of one or more of the associated listed items. Embodiments

[0053] Referring to the drawings Figure 1 to the drawings Figure 6 The present embodiment provides a toner weight-based plastic particle mixing and color matching device, which aims to improve material flowability, mixing efficiency, cleanliness, safety, and automation control, etc.

[0054] In terms of structural composition, the device comprises a mixing assembly 1, at least one toner delivery assembly 2, and a controller 3 for controlling the mixing assembly 1 and the toner delivery assembly 2.

[0055] Among them, from the functional purpose, the mixing assembly 1 is responsible for the mixing of particulate materials and powder materials, and the toner delivery assembly 2 delivers toner based on weight to achieve accurate mixing and color matching and feeding.

[0056] In terms of specific structure, referring to the drawings Figures 5-8 , the mixing assembly 1 comprises a body 101, and the body 101 is provided with a constant volume bin 102, a mixing bin 103, and a discharge bin 104. Among them, the constant volume bin 102 and the mixing bin 103 are connected through a connecting port 108 with a flap type opening and closing mechanism 107, and the mixing bin 103 and the discharge bin 104 are connected through a connecting port 108 with a flap type opening and closing mechanism 107.

[0057] In order to ensure the cleanliness of the equipment and the hygiene of the materials, the constant volume bin 102, the mixing bin 103, and the discharge bin 104 are all designed with openable bin doors. Specifically, the constant volume bin 102 is designed with a first bin door 105, and the mixing bin 103 and the discharge bin 104 share a second bin door 106. The first bin door 105 and the second bin door 106 are hinged on the body 1, and in working condition, they are in close contact with the end face of the body 1, and cooperate with rubber sealing strips to ensure that there is no material leakage when closed.

[0058] In order to facilitate cleaning, the inner walls of the constant volume bin 102, the mixing bin 103, and the discharge bin 104 are designed as smooth surfaces without dead corners. The inner wall material is selected to be a material that is not easy to adhere to materials (such as stainless steel), and is treated by polishing to have high smoothness, corrosion resistance, and wear resistance. During the design process, complex structures or small holes are avoided to prevent material accumulation and ensure easy cleaning after each use.

[0059] In order to optimize the material flow, the lower part of the constant volume bin 102 and the mixing bin 103 is designed in a tapered shape. The bottom of the constant volume bin 102 is conical, which can effectively accelerate the material flow and avoid material accumulation at the bottom of the bin. The lower part of the mixing bin 103 is designed in a semicircular shape, which can not only meet the mixing function, but also facilitate the sliding of the material into the discharge bin 104.

[0060] More specifically, in terms of location, the constant volume bin 102 is located at the upper part of the body 1, mainly used for temporarily storing a certain volume of granular material (mainly plastic particles), providing a constant amount of material for the mixing bin.

[0061] The upper end of the constant volume bin 102 is provided with a particle inlet 109 for the input of granular material. The particle inlet is connected to the granular material conveying equipment or bin through an interface or external pipeline.

[0062] Further, the opening and closing control of the particle inlet 109 adopts a push-pull type opening and closing mechanism, including a base plate fixed at the particle inlet and a horizontal valve plate inserted into the guide slot of the base plate. The horizontal valve plate is controlled to move along a horizontal straight line by a telescopic drive unit, thereby flexibly controlling the opening and closing state of the particle inlet 109, preventing the overflow or leakage of granular material.

[0063] The lower end of the constant volume bin 102 is provided with a connecting opening 108 with a flap type opening and closing mechanism 107, used to introduce the granular material into the mixing bin.

[0064] In terms of specific structure, the flap type opening and closing mechanism 107 includes a flap, a base shaft and a rotary drive assembly. The rotary drive assembly drives the base shaft to rotate, and then drives the flap to rotate, controlling the opening and closing of the connecting opening. The shape and size of the flap are adapted to the connecting opening, and through close fitting, it can effectively prevent material leakage.

[0065] In the design of the mixing bin 103, the mixing bin 103 is responsible for mixing plastic particles with toner material, and the bin body is circular or inverted D-shaped. Circular design is beneficial to the uniform flow of material during stirring, while inverted D-shaped design accelerates the flow of material under the action of gravity to the lower part, improves stirring efficiency and avoids accumulation.

[0066] The upper end of the mixing bin 103 is provided with a powder inlet cooperating with the toner delivery assembly 2, for receiving powder material, which is fed by an external feeding mechanism. In order to realize uniform mixing, the mixing bin 103 is provided with a stirring rod 110, which is driven to rotate by an external stirring drive mechanism to stir the material in the mixing bin 103.

[0067] Referring to the drawings Figure 9 The design of the stirring rod 110 includes a shaft and an arc-shaped stirring section connected to the shaft, which can effectively stir the material and accelerate the flow.

[0068] Referring to the drawings Figure 8 For easy cleaning, the stirring rod 110 is designed to be detachable, and the operator can conveniently take it out for separate cleaning. The surface of the stirring rod 110 is smooth and has no dead corners, avoiding the accumulation of materials on its surface and reducing the difficulty of cleaning.

[0069] In addition, also referring to the drawings Figure 8 The mixing bin 103 is also provided with a detachable lining structure 111, which helps to protect the inner wall of the mixing bin 103 from being eroded by the material and is more convenient to clean. It should be noted that the lining structure 111 needs to be removed first before the stirring rod 110 can be removed.

[0070] In this embodiment, the lower end of the mixing bin 103 is in a controlled communication relationship with the discharge bin 104 through the flap type opening and closing mechanism 107. The discharge bin 104 is located at the lower part of the body 1 and is mainly used for storing and discharging the mixed material (referring to the mixed plastic particles). The lower end of the discharge bin 104 is provided with a mixed material outlet 112 for discharging the mixed material, which is usually connected to the downstream process or injection molding equipment (not shown in the figure) through a discharge pipeline.

[0071] In this embodiment, referring to the drawings Figures 10-17 The toner delivery assembly 2 is used to deliver toner to the mixing bin 103. In terms of specific composition, the vibrating feeder mechanism 201 is the core part of the toner delivery process, responsible for delivering toner from the bin 202 to the weighing and discharging mechanism 203. The core power source of the vibrating feeder mechanism is the vibration source, which usually uses an electromagnetic vibration table to convert electrical energy into mechanical vibration and excite the periodic vibration of the discharge pipe 204 to push the toner to flow.

[0072] In order to ensure stable material flow, the vibration source generates a magnetic field through electromagnetic induction to drive the vibration end to produce periodic vibration. By adjusting the vibration frequency and amplitude, it ensures that the material flows at a uniform and smooth speed, avoiding material accumulation or uneven flow.

[0073] In order to prevent toner from scattering and polluting the air, the discharge pipe and the weighing and discharging mechanism are usually arranged in a sealed chamber. The discharge pipe is inserted into the chamber and connected to the weighing and discharging mechanism, ensuring that the material can be stably conveyed in a sealed environment to prevent pollution.

[0074] In order to facilitate cleaning and replacement of the discharge pipe, the electromagnetic vibration table is installed on a base with a linear slide rail, and the electromagnetic vibration table and the discharge pipe can slide linearly on the base, so that the discharge pipe 204 can be conveniently disassembled and replaced. In order to ensure the position of the discharge pipe 204 during work, the linear slide rail is equipped with a locking function to ensure the accurate position of the discharge pipe 204 and avoid deviation or vibration.

[0075] In order to adapt to different needs in the production environment, especially the requirement of frequent color change, the discharge pipe 204 is detachably connected with the jig, which facilitates cleaning when the material is replaced, and avoids the influence of material residues on the next production.

[0076] In the gravimetric discharge mechanism 203, the rotary drive mechanism is responsible for accurately controlling the rotation of the open container, ensuring that the material is accurately poured out. The weighing module monitors the weight of the material in the container through a sensor and converts the changes into an electrical signal transmitted to the controller 3. The controller 3 adjusts the working state of the vibrating feeder mechanism in real time according to the signal feedback by the weighing sensor, ensuring that the amount of material delivered each time reaches the predetermined target.

[0077] According to the feedback information of the weighing module, the vibrating feeder mechanism 201 will continue to adjust until the weight of the material in the open container reaches the target value. If the target weight is reached, the rotary drive mechanism is started to drive the open container to pour out the material. In order to improve the accuracy, the system can also use cumulative weighing method to ensure the accuracy of the total weight of the material.

[0078] By combining the vibrating feeding and precise weighing technology, the embodiment greatly improves the accuracy of material delivery, avoids the problem of unstable material flow, and ensures the accuracy of mixed color matching and the efficiency of production.

[0079] Although exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A toner weight-based plastic particle mixed color matching device, characterized by, The mixing and matching device comprises a mixing assembly, at least one toner delivery assembly installed on the mixing assembly and delivering toner matching based on weight to the mixing assembly, and a controller for controlling the operation of the mixing assembly and the toner delivery assembly, wherein the mixing assembly is used for mixing and stirring the quantified plastic particles with at least one toner delivered by the toner delivery assembly to complete the color matching of the plastic particles; the toner delivery assembly comprises a weighing module for weighing the toner to be delivered, and the toner delivery assembly is internally provided with the weighing module to deliver the toner into the mixing assembly based on weight.

2. A toner weight based plastic particle mixing and toning device as claimed in claim 1 characterized by: The mixing assembly comprises a body, a constant-volume bin, a mixing bin and a discharge bin arranged in the body from top to bottom, wherein the constant-volume bin is provided with a particle feeding port with an opening and closing control mechanism at the upper end, and the lower end of the constant-volume bin is connected to the upper end of the mixing bin through a connecting opening with a flap type opening and closing mechanism; a stirring rod is arranged in the mixing bin, and the stirring rod is driven to rotate and stir by an external stirring driving unit; the upper end of the mixing bin is further provided with a powder feeding port for powder feeding; the lower end of the mixing bin is connected to the discharge bin through a connecting opening with a flap type opening and closing mechanism; and the lower end of the discharge bin is provided with a mixed material outlet.

3. A toner weight based plastic particle mixing and toning device as claimed in claim 2, characterized in that: The constant-volume bin, the mixing bin and the discharge bin are all provided with openable bin doors for facilitating cleaning of the bins.

4. A toner weight based plastic particle mixing and toning device as claimed in claim 2, characterized in that: The constant-volume bin, the mixing bin and the discharge bin are all provided with observation windows for observing the conditions in the bins.

5. A toner weight based plastic particle mixing and toning device as defined in claim 2, wherein: The lower part of the bin chamber of the constant-volume bin and the mixing bin gradually narrows towards the connecting opening, so that the inner wall of the bin chamber forms a conical channel and / or an arc-shaped channel towards the connecting opening.

6. A toner weight based plastic particle mixing and toning device as defined in claim 2, characterized by: The mixing bin is provided with a detachable lining structure for facilitating quick cleaning of the mixing bin.

7. A toner weight based plastic particle mixing and toning device as defined in claim 1, wherein: The toner delivery assembly comprises a weighing discharge mechanism and a vibrating feeding mechanism in positional cooperation with the weighing discharge mechanism, wherein the vibrating feeding mechanism comprises a vibration source and a discharge pipe / tank driven to vibrate by the vibration source, the discharge pipe / tank is inclined upward along the material conveying direction based on the horizontal direction, so that the discharge pipe / tank can prevent the material from sliding by itself in a static state by using the gravity effect, and the material can be conveyed to the outlet of the weighing discharge mechanism along the inclined direction by overcoming the gravity under the action of vibration; the weighing discharge mechanism comprises a rotary driving mechanism, a weighing module installed on the rotary end of the rotary driving mechanism, and an open container in detachable connection with the weighing module, the open container is in positional cooperation with the outlet of the vibrating feeding mechanism in the initial position and is used for temporarily storing the material delivered from the outlet; the weighing module is used for weighing the weight of the open container; and the rotary driving mechanism drives the open container to rotate by a specified angle, and the open container is reset after the material in the open container is poured into the mixing assembly.

8. A toner weight based plastic particle mixing and toning device as defined in claim 7, characterized by: A detachable limiting plate is inserted into the discharge pipe / tank near the opening, the limiting plate is used for adjusting and controlling the caliber of the material flow path at the outlet to prevent the material from accumulating at the outlet during the horizontal inertial motion; by limiting the flow range of the material, the limiting plate ensures stable discharge during the vibration process and avoids unstable vibration and uneven discharge caused by the accumulated material.

9. A toner weight based plastic particle mixing and toning device as defined in claim 7, wherein: The weighing module comprises a base with a plug interface, a weighing sensor in the base, wherein the base is driven by a rotary driving mechanism to realize reciprocating rotation and reset, and the open container has a plug-in piece matched with the plug interface, the plug-in piece and the plug interface are pluggable combined and separated, when matched, the plug-in piece of the open container is inserted into the plug-in opening and directly or indirectly in mechanical contact with the weighing sensor, so as to realize the transmission and measurement of weight.

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