Plastic color matching machine facilitating cleaning

Abstract

The utility model relates to the field, and its specific disclosure is a kind of plastic color matching machine convenient to clean, including machine body, master batch output unit, toner output unit, and the stirring outer bin is defined in machine body;It further includes stirring inner bin, it is configured to define a smaller closed space than stirring outer bin in stirring outer bin, and stirring inner bin is detachably arranged in stirring outer bin.Worker can easily take out stirring inner bin from machine body, and carry out thorough cleaning and maintenance.Stirring inner bin has master batch import, toner import and the inner bin wall for surrounding and forming closed space, master batch import is connected with master batch output unit, toner import is connected with toner output unit, and inner bin wall is configured to be suitable for preventing plastic toner from contacting the inner wall of stirring outer bin.The inner bin wall of stirring inner bin can effectively prevent plastic toner from contacting the inner wall of stirring outer bin, and reduce cleaning difficulty.

Description

Technical Field

[0001] This utility model relates to the field of plastic color matching machines, and in particular to a plastic color matching machine that is easy to clean. Background Technology

[0002] In the production process of plastic products, the plastic color mixing machine is a key piece of equipment, undertaking the important task of precisely mixing plastic masterbatch and color powder to give plastic products a specific color. As the plastic products market continues to increase its requirements for product quality, color diversity, and production efficiency, the performance and structure of plastic color mixing machines are also being continuously optimized and improved.

[0003] Existing plastic color mixing machines typically include a machine body, a masterbatch output unit, and a color powder output unit. The machine body contains a mixing chamber where a mixing mechanism mixes the incoming plastic masterbatch and color powder. The resulting colored masterbatch then enters a storage silo. However, these traditional plastic color mixing machines have revealed numerous problems in practical use.

[0004] First, cleaning and maintaining the mixing chamber is quite difficult. Because plastic pigments have fine particles and are easily adsorbed, they tend to stick to the inner wall of the mixing chamber during mixing. After prolonged use, the residual pigments not only affect the accuracy of subsequent color matching, causing color deviations, but are also extremely difficult to clean. Traditional mixing chambers are usually fixed inside the machine or are directly integrated into the machine body, defining a space for mixing. Operators need to use special tools and even disassemble parts of the machine structure to clean them. This not only consumes a lot of time and manpower but also easily damages the machine structure due to frequent disassembly, reducing the equipment's lifespan.

[0005] Secondly, the installation and maintenance of the mixing mechanism are inconvenient. Traditional plastic color mixing machines typically use a fixed connection between the mixing mechanism and the machine body. When the mixing mechanism malfunctions or needs replacement, operators must disassemble the entire mixing system, making the maintenance process cumbersome and complex, resulting in long downtime and severely impacting production efficiency. Furthermore, the fixed connection makes it difficult to flexibly replace different types of mixing paddles according to varying production needs, limiting the applicability of the color mixing machine.

[0006] In summary, existing plastic color mixing machines have significant shortcomings in areas such as cleaning and maintaining the mixing chamber and installing and repairing the mixing mechanism, making it difficult to meet the ever-increasing production demands. Therefore, developing a plastic color mixing machine with a detachable mixing chamber, easy maintenance, and excellent mixing performance has become an urgent technical problem to be solved in this field. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a plastic color matching machine that is easy to clean. Through the design of a detachable mixing chamber, it can be easily cleaned and quickly maintained, while improving production efficiency and color matching accuracy.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A plastic color mixing machine that is easy to clean includes a machine body, a masterbatch output unit, and a color powder output unit, wherein a mixing chamber is defined within the machine body; the plastic color mixing machine further includes:

[0010] An inner mixing chamber is configured to define a smaller enclosed space within the outer mixing chamber than the outer mixing chamber. The inner mixing chamber is detachably received within the outer mixing chamber to facilitate separation of the outer mixing chamber for replacement or cleaning.

[0011] The mixing chamber has a masterbatch inlet, a color powder inlet, and an inner chamber wall for enclosing and forming the closed space. The masterbatch inlet is connected to the masterbatch output unit, the color powder inlet is connected to the color powder output unit, and the inner chamber wall defines the closed space to prevent plastic color powder from contacting the inner wall of the mixing outer chamber.

[0012] Furthermore, both the masterbatch inlet and the color powder inlet are equipped with seals to prevent the color powder from escaping into the mixing chamber.

[0013] Furthermore, the inner mixing chamber has a mixing mechanism, the machine body has a driving mechanism, and the mixing mechanism and the driving mechanism are connected by a separable coupler.

[0014] Furthermore, the stirring mechanism includes a stirring shaft and a stirring paddle attached to the stirring shaft, the inner chamber wall includes a front wall and a rear wall arranged opposite to each other, and the stirring paddle is detachably disposed between the front wall and the rear wall.

[0015] Furthermore, the stirring shaft is rotatably positioned on the rear wall, which is detachably attached to the stirring chamber to separate the stirring paddle from the stirring chamber for cleaning.

[0016] Furthermore, the stirring shaft includes a fixed section and a movable section that are detachable from each other and can be connected in transmission. The fixed section is rotatably positioned on the rear wall, the movable section is rotatably positioned on the front wall, and the stirring paddle is attached to the movable section.

[0017] Furthermore, the front wall is detachably attached to the mixing chamber to separate the mixing blade from the mixing chamber for cleaning.

[0018] Furthermore, the movable section includes a support part and a positioning part that are separable from each other and can rotate relative to each other. The positioning part is fixed to the front wall, and the stirring paddle is fixed to the support part.

[0019] Furthermore, the support portion and the fixed section are separable from each other but are connected in a transmission manner; the support portion has a non-circular groove, and the fixed section has a non-circular protrusion, with the protrusion inserted into the groove to achieve a transmission connection.

[0020] Furthermore, the mixing chamber is also provided with an additive inlet, which is suitable for dispensing functional additives and is equipped with a seal.

[0021] Due to the adoption of the above technical solutions, this utility model has the following beneficial effects:

[0022] 1. This utility model defines a mixing outer chamber within the machine body and incorporates a detachable mixing inner chamber within it. The inner wall design of the inner chamber effectively prevents plastic powder from contacting the inner wall of the outer chamber, reducing cleaning difficulty. Furthermore, operators can easily remove the inner chamber from the outer chamber for thorough cleaning and maintenance. This design not only reduces the time and labor costs required for cleaning but also avoids equipment damage caused by frequent disassembly of the machine structure, significantly extending the equipment's lifespan. In addition,

[0023] 2. This invention significantly enhances the flexibility and reliability of the mixing mechanism by incorporating a detachable mixing mechanism within the mixing chamber and connecting it to the mixing drive mechanism using a separable coupling mechanism. Traditional mixing mechanisms are typically directly connected to the machine body; therefore, maintenance is complex and time-consuming in case of malfunction or impeller replacement. In contrast, the mixing mechanism of this invention can be quickly disassembled and replaced via the coupling mechanism, eliminating the need to disassemble the entire mixing system, greatly reducing equipment downtime and improving production efficiency. Furthermore, it further reduces cleaning difficulty.

[0024] 3. The coupling mechanism design in this invention ensures the stability and reliability of power transmission. This design not only effectively transmits power but also maintains the stable operation of the stirring mechanism during mixing, avoiding uneven mixing caused by loose connections or wear. Furthermore, the stirring shaft of the stirring mechanism adopts a detachable connection design, further improving the flexibility and ease of maintenance of the stirring mechanism. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0026] Figure 1 This is a schematic diagram of the plastic color matching machine in Embodiment 1 of this utility model;

[0027] Figure 2 This is a cross-sectional view of the plastic color matching machine in Embodiment 1 of this utility model;

[0028] Figure 3 This is a disassembly diagram of the mixing chamber and storage chamber of the plastic color matching machine in Embodiment 1 of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the machine body in Embodiment 1 of this utility model;

[0030] Figure 5 This is a schematic diagram of the mixing chamber in Embodiment 1 of this utility model;

[0031] Figure 6 This is a cross-sectional view of the mixing chamber in Embodiment 1 of this utility model;

[0032] Figure 7 This is a schematic diagram of the mixing chamber in Embodiment 2 of this utility model;

[0033] Figure 8 This is a cross-sectional view of the mixing chamber in Embodiment 2 of this utility model;

[0034] Figure 9 These are schematic diagrams of the mixing chamber in Embodiments 3 and 4 of this utility model;

[0035] Figure 10 This is a cross-sectional view of the mixing chamber in Embodiments 3 and 4 of this utility model.

[0036] Figure label:

[0037] 100. Main body; 101. Masterbatch output unit; 102. Color powder output unit; 103. Stirring drive mechanism;

[0038] 200. Mixing outer chamber; 201. Upper disassembly opening; 210. Mixing inner chamber; 211. Top wall; 2111. Masterbatch inlet; 2112. Colorant inlet; 2113. Additive inlet; 212. Bottom wall; 2121. Coloring masterbatch outlet; 213. Front wall; 214. Rear wall; 215. End cap; 2151. Bearing; 216. Handle; 217. Mixing mechanism; 2171. Mixing paddle; 2172. Mixing shaft; 21721. Fixed section; 21722. Moving section; 217221. Support part; 217222. Positioning part; 218. Coupling mechanism; 2181. First coupling element; 2182. Second coupling element; 219. Support plate; 2191. Bearing;

[0039] 300. Storage bin; 301. Lower disassembly opening; 310. Inner storage bin; 311. Observation window. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. 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, and therefore should not be construed as a limitation of this utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0045] Example 1:

[0046] See Figure 1-4 This embodiment of a plastic color mixing machine that is easy to clean includes a machine body 100, a masterbatch output unit 101, and a color powder output unit 102. A mixing chamber 200 is defined within the machine body 100.

[0047] The mixing outer chamber 200 includes a detachable mixing inner chamber 210, which defines a smaller enclosed space within the mixing outer chamber 200. After the color matching process is completed, the operator can separate the mixing inner chamber 210 from the mixing outer chamber 200 for replacement or cleaning.

[0048] In this embodiment, the mixing chamber 210 has a masterbatch inlet, a colorant inlet, and an inner chamber wall for enclosing and forming the closed space. The masterbatch inlet is connected to the masterbatch output unit 101, and the colorant inlet is connected to the colorant output unit 102. The inner chamber wall of the mixing chamber 210 can effectively prevent plastic colorant from contacting the inner wall of the mixing outer chamber 200, reducing the difficulty of cleaning.

[0049] In some embodiments, the inner wall of the mixing chamber 210 is composed of a side wall, a top wall 211, and a bottom wall 212, which together enclose a closed space. The top wall 211 is provided with a masterbatch inlet 2111 and a color powder inlet 2112. The masterbatch inlet 2111 communicates with the masterbatch output unit 101, and the color powder inlet 2112 communicates with the color powder output unit 102, facilitating the entry of plastic masterbatch and color powder into the mixing chamber 210. Furthermore, a coloring masterbatch outlet 2121 communicating with the storage silo 300 is provided on the bottom wall 212, ensuring that the mixed material can smoothly enter the storage silo 300.

[0050] In order to further improve the sealing performance of the inner mixing chamber 210 and prevent the color powder from escaping into the outer mixing chamber 200, in this embodiment, sealing elements are provided at both the masterbatch inlet 2111 and the color powder inlet 2112.

[0051] In some embodiments, the mixing chamber 210 has a built-in mixing mechanism 217, and the machine body 100 has a drive mechanism 103. The mixing mechanism 217 is connected to the drive mechanism 103 disposed on the machine body 100 via a detachable coupler. This facilitates the separation of the mixing chamber 210 from the mixing mechanism 217.

[0052] Specifically, in this embodiment, the separable coupler 218 includes a first coupling member 2181 disposed at the output end of the drive mechanism 103 and a second coupling member 2182 disposed on the outer wall of the stirring chamber 210. In this embodiment, the first coupling member 2181 is a cover with a spline groove, and the second coupling member 2182 is a main body with a spline. When the cover and the main body are fastened together, the spline and the spline groove cooperate to achieve stable and reliable power coupling, ensuring that the power of the stirring drive mechanism 103 can be effectively transmitted to the stirring mechanism 217.

[0053] To further facilitate the cleaning of the mixing chamber 210, in some embodiments, the mixing mechanism 217 is detachably configured in the mixing chamber 210.

[0054] See Figure 5 and Figure 6 In some embodiments, the stirring mechanism 217 includes a stirring shaft 2172 and a stirring paddle 2171 attached to the stirring shaft 2172. The sidewalls of the inner chamber include a front wall 213 and a rear wall 214 arranged opposite to each other, and the stirring paddle 2171 is detachably disposed between the front wall 213 and the rear wall 214. The stirring paddle 2171 can be a stirring paddle, a turbine agitator, a ribbon agitator, or an anchor agitator, etc. In this embodiment, the stirring shaft 2172 and the stirring paddle 2171 are rotatably positioned on the rear wall 214, and the rear wall 214 is detachably attached to the stirring inner chamber 210 to separate the stirring paddle 2171 from the stirring inner chamber for cleaning. Specifically, one end of the stirring shaft 2172 is rotatably connected to the front wall 213 of the stirring inner chamber 210, and the other end of the stirring shaft 2172 passes through the rear wall 214 and is connected to the second coupling member 2182.

[0055] Furthermore, an end cap 215 can be provided on the outer side of the front wall 213. The end cap 215 is provided with a bearing seat and a bearing 2151 disposed in the bearing seat. The end of the stirring shaft 2172 passes through the front wall 213 and is connected to the bearing 2151, thereby achieving a rotatable connection. Of course, bearings can also be provided on both the inner and outer sides of the front wall 213 to improve rotational stability.

[0056] To facilitate disassembly, a disassembly port is further provided on the front wall 213, and a support plate 219 is provided at the disassembly port. The support plate 219 can be fixed to the disassembly port of the front wall 213 with screws. The end of the stirring shaft 2172 passes through the support plate 219 and is connected to the bearing 2151.

[0057] In some embodiments, the outer mixing chamber 200 has an upper detachable opening 201 on the side facing the operator for the inner mixing chamber 210 to enter and exit. The upper detachable opening 201 is equipped with a detachable component (not shown in the figure) to facilitate the operator to remove or insert the inner mixing chamber 210 from the outer mixing chamber 200.

[0058] In some embodiments, the inner mixing chamber 210 is provided with a handle 216 on the side wall facing the operator, so that the operator can pull the inner mixing chamber 210 out of the outer mixing chamber 200 by using the handle 216.

[0059] In some embodiments, the mixing chamber 210 is fixed to the machine body 100 by a latch (not shown in the figure). When the equipment is working, the latch can ensure the stability of the mixing chamber 210 and prevent it from shaking or displacing.

[0060] In some embodiments, the mixing chamber 210 is further provided with an additive inlet 2113, which is used to add functional additives. Specifically, the additive inlet 2113 can be located on the top wall 211, and the additive inlet 2113 is also equipped with a seal. During the production process, operators can add different functional additives, such as antioxidants, plasticizers, and flame retardants, into the mixing chamber 210 through the additive inlet 2113 according to the performance requirements of the plastic products, thereby meeting the diverse performance requirements of the plastic products. For example, when producing plastic products that require flame retardant properties, operators can add flame retardants to the mixing chamber 210 through the additive inlet 2113 during the material mixing process, and mix them together with the plastic masterbatch and color powder to give the produced plastic products flame retardant properties.

[0061] In some embodiments, the top wall 211 of the mixing chamber 210 is detachably disposed on the top of the mixing chamber 210, or its front wall 213 is detachably disposed on the mixing chamber 210, so as to facilitate the disassembly and assembly of the mixing mechanism 217, or to facilitate the separation of the mixing paddle 2171 from the mixing chamber 210 for cleaning.

[0062] In some embodiments, the machine body 100 further defines an outer storage chamber 300, into which an inner storage chamber 310 is detachably inserted. The inner storage chamber 310 has a feed opening at the top, a discharge opening at the bottom, and four inner storage walls for enclosing and forming a storage space. The feed opening is connected to the coloring masterbatch outlet 2121 of the mixing inner chamber 210, and the inner storage walls can prevent the colored plastic masterbatch from contacting the walls of the outer storage chamber 300, reducing the difficulty of cleaning the storage chamber 300.

[0063] In some embodiments, a capacity detection mechanism (not shown in the figure) is provided at the feed opening of the inner storage silo 310. This capacity detection mechanism includes a shaft mounted on the inner wall of the storage silo, with a detection plate fitted onto the shaft. One end of the shaft is connected to a control system. When the amount of material stored in the inner storage silo 310 changes, the detection plate rotates around the shaft as the material increases or decreases. The shaft transmits the rotation signal of the detection plate to the control system, thereby achieving real-time monitoring of the storage capacity. Operators can adjust the production process promptly based on the storage capacity information fed back by the control system to ensure the continuity and stability of production.

[0064] Furthermore, the outer storage compartment 300 has a lower detachable opening 301 on the side facing the operator for access to the inner storage compartment 310. From the outside, the inner storage compartment 310 has an observation window 311 on the side facing the operator, allowing the operator to directly observe the storage status inside the inner storage compartment 310 and promptly grasp the material storage volume.

[0065] In actual operation, the masterbatch output unit 101 delivers plastic masterbatch through the masterbatch inlet 2111 to the mixing chamber 210, and the color powder output unit 102 delivers color powder through the color powder inlet 2112 to the mixing chamber 210. Simultaneously, operators can add functional additives through the additive inlet 2113 as needed. The stirring drive mechanism 103 is activated, driving the stirring shaft and stirring paddle 2171 of the stirring mechanism 217 to rotate via the coupling mechanism 218, thus mixing the plastic masterbatch and color powder. The mixed coloring masterbatch enters the storage chamber 310 for storage through the coloring masterbatch outlet 2121. When the mixing chamber 210 needs to be cleaned or maintained, the operator first releases the lock, and then pulls the mixing chamber 210 out of the upper disassembly opening 201 of the mixing outer chamber 200 through the handle 216. Then, the mixing mechanism 217 is disassembled. First, the end cover 215 on the outside of the front wall 213 of the mixing chamber 210 is removed, and the bearing 2151 is disassembled and installed on the mixing shaft. Then, the support plate 219 is removed from the disassembly opening. Next, the mixing shaft can be pulled out so that the end connected to the second coupling member 2182 is disengaged from the second coupling member 2182. Then, the top wall 211, the front wall 213, or the rear wall 214 is opened, and the entire mixing mechanism is taken out from the top opening or the side wall opening. The mixing chamber 210 can then be thoroughly cleaned and inspected. The operation is very convenient.

[0066] Example 2:

[0067] See Figure 7-8 This embodiment is similar in main structure to Embodiment 1, except that the stirring shaft 2172 of the stirring mechanism 217 adopts a detachable connection design. Specifically, the stirring shaft 2172 includes a fixed section 21721 and a movable section 21722 that are detachable from each other and can be connected in transmission. The fixed section 21721 is rotatably positioned on the rear wall 214, specifically passing through the rear wall 214 and connected to the second coupling member 2182. The movable section 21722 is rotatably positioned on the front wall 213, and the stirring paddle 2171 is attached to the movable section 21722.

[0068] In this embodiment, the movable section 21722 and the fixed section 21721 can be connected by a coupling or a universal joint. This design makes it easier to disassemble and assemble the stirring mechanism 217. When it is necessary to disassemble the stirring mechanism 217, the operator first removes the end cover 215 on the outside of the front wall 213 of the stirring chamber 210, and at the same time removes and installs the bearing 2151 on the stirring shaft. Then, the support plate 219 is removed from the disassembly port. Next, the movable section 21722 can be pulled out to detach it from the fixed section 21721. Then, the top wall 211 or the front wall 213 is opened, and the movable section 21722 and the stirring paddle 2171 are taken out from the top opening or the side opening. The stirring chamber 210 can then be cleaned and inspected, or the stirring mechanism 217 can be replaced.

[0069] It is understandable that the movable segment 21722 and the fixed segment 21721 can also be connected by a coupling structure. For example, a mounting hole can be provided at the end of the movable segment 21722, and the end of the fixed segment 21721 can be inserted into the mounting hole. Keyways can be provided on the outer circumference of the mounting hole and the fixed segment 21721, and circumferential fixation between the two shafts can be achieved by using keys such as flat keys or semi-circular keys. Alternatively, the movable segment 21722 can have a non-circular groove, and the fixed segment 21721 can have a non-circular protrusion. The protrusion can be inserted into the groove to achieve a transmission connection.

[0070] In other aspects, such as the connection method between the inner mixing chamber 210 and the outer mixing chamber 200, and the structure of the inner storage chamber 310, it is the same as in Embodiment 1, and will not be described again here. Its working principle is also similar to that in Embodiment 1. The material is transported to the inner mixing chamber 210 through the masterbatch output unit 101 and the color powder output unit 102. The stirring drive mechanism 103 drives the stirring mechanism 217 to stir and mix through the coupling mechanism 218. The mixed material enters the inner storage chamber 310 for storage.

[0071] Example 3:

[0072] like Figure 9-10 As shown, this embodiment is also based on the basic structure of the plastic color matching machine described above. The difference from the previous two embodiments lies in another detachable connection form of the stirring shaft. In this embodiment, the stirring shaft includes a support part 217221 and a positioning part 217222 that are separable from each other and can rotate relative to each other. The positioning part 217222 is rotatably fixed to the front wall 213, and the stirring paddle 2171 is fixed to the support part 217221.

[0073] In some embodiments, a coupling structure can be provided between the support portion 217221 and the positioning portion 217222. Specifically, an assembly hole is provided at the end of the support portion 217221, and the end of the positioning portion 217222 is inserted into the assembly hole. Keyways are provided on the outer circumference of the assembly hole and the positioning portion 217222, and circumferential fixation between the two shafts is achieved by a flat key. Alternatively, the support portion 217221 has a non-circular groove, and the positioning portion 217222 has a non-circular protrusion. The protrusion is inserted into the groove to achieve a transmission connection. The end of the positioning portion 217222 is connected to the front wall 213 of the stirring chamber 210 by a bearing. The specific structure is similar to the connection method of the stirring shaft end in Embodiment 1, and a rotatable connection is achieved by a support plate 219, an end cap 215, a bearing seat, and a bearing 2151. Further, a bearing 2191 can be provided on the inner side of the support plate 219 to enhance the stability of the rotation of the stirring mechanism 217.

[0074] This detachable design of the stirring shaft ensures the stability of the stirring mechanism 217 while further improving its ease of assembly and disassembly. When the stirring mechanism 217 needs to be disassembled, the operator first removes the end cover 215 on the outside of the front wall 213 of the stirring chamber 210, and at the same time removes and installs the bearing 2151 on the stirring shaft, or directly removes the support plate 219, positioning part 217222, bearing 2151 and bearing 2191 as a whole from the disassembly port, so that the positioning part 217222 is separated from the support part 217221. Then, the top wall 211 or front wall 213 is opened, and the support part 217221 and the stirring paddle are taken out from the top opening or side opening. The stirring chamber 210 can then be cleaned and inspected, or the stirring mechanism 217 can be replaced.

[0075] In this embodiment, the plastic color mixing machine operates in a manner similar to the previous two embodiments, involving material conveying, mixing, and storage. Materials are conveyed to the mixing chamber 210 via the masterbatch output unit 101 and the color powder output unit 102. Simultaneously, operators can add functional additives through the additive inlet 2113 as needed. The mixing drive mechanism 103 drives the mixing mechanism 217 to perform mixing, and the mixed materials enter the storage chamber 310.

[0076] Example 4:

[0077] See also Figure 9 and Figure 10This embodiment is also based on the basic structure of the plastic color matching machine described above. The difference from the previous three embodiments lies in the alternative detachable connection form of the stirring shaft. In this embodiment, the stirring shaft includes a detachably connected fixed section 21721, a support part 217221, and a positioning part 217222. The stirring paddle 2171 is fixedly connected to the support part 217221. The fixed section 21721 passes through the rear wall 214 and is connected to the second coupling member 2182. The end of the positioning part 217222 is rotatably connected to the front wall 213 of the stirring chamber 210.

[0078] In this embodiment, the support portion 217221 and the fixed section 21721, as well as the support portion 217221 and the positioning portion 217222, can be connected by a coupling or a universal joint. Alternatively, they can be connected by a coupling structure, for example, one end of which has a mounting hole, and the other end is inserted into the mounting hole. Keyways are provided on the outer circumference of the mounting hole and the other end, and circumferential fixation between the two shafts is achieved by a key such as a flat key or a semi-circular key. Alternatively, one end of the shaft has a non-circular groove, and the other end has a non-circular protrusion, with the protrusion inserted into the groove to achieve a transmission connection. When the mixing mechanism 217 needs to be disassembled, the operator first removes the end cover 215 on the outside of the front wall 213 of the mixing chamber 210, and at the same time removes and installs the bearing 2151 on the mixing shaft, or directly removes the support plate 219, the positioning part 217222, the bearing 2151 and the bearing 2191 as a whole from the disassembly port, so that the positioning part 217222 is separated from the support part 217221. Then the support part 217221 can be pulled out to separate it from the fixed section 21721. Then the top wall 211 or the front wall 213 is opened, and the support part 217221 and the mixing blade are taken out from the top opening or the side opening. The mixing chamber 210 can then be cleaned and inspected, or the mixing mechanism 217 can be replaced.

[0079] In summary, all four embodiments of this utility model utilize a detachable mixing chamber 210 design, enabling convenient cleaning and maintenance of the mixing chamber 210, reducing cleaning difficulty, and extending the equipment's service life. Simultaneously, the detachable design of the mixing mechanism 217 and the detachable connection of the mixing shaft in different embodiments improve the flexibility and maintenance convenience of the mixing mechanism 217, meeting diverse production needs and increasing production efficiency. The related designs of the storage chamber 310, such as the capacity detection mechanism and the observation window 311, further enhance the equipment's practicality and ease of operation.

[0080] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A plastic color mixing machine that is easy to clean, comprising a machine body, a masterbatch output unit, and a color powder output unit, wherein a mixing chamber is defined within the machine body; characterized in that, The plastic color matching machine also includes: An inner mixing chamber is configured to define a smaller enclosed space within the outer mixing chamber than the outer mixing chamber. The inner mixing chamber is detachably received within the outer mixing chamber to facilitate separation of the outer mixing chamber for replacement or cleaning. The mixing chamber has a masterbatch inlet, a color powder inlet, and an inner chamber wall for enclosing and forming the closed space. The masterbatch inlet is connected to the masterbatch output unit, the color powder inlet is connected to the color powder output unit, and the inner chamber wall defines the closed space to prevent plastic color powder from contacting the inner wall of the mixing outer chamber.

2. The plastic color matching machine according to claim 1, characterized in that, Both the masterbatch inlet and the color powder inlet are equipped with seals to prevent the color powder from escaping into the mixing chamber.

3. The plastic color matching machine according to claim 1 or 2, characterized in that, The mixing chamber has a mixing mechanism, and the machine body has a driving mechanism. The mixing mechanism and the driving mechanism are connected by a detachable coupler.

4. The plastic color matching machine according to claim 3, characterized in that, The stirring mechanism includes a stirring shaft and a stirring paddle attached to the stirring shaft. The inner chamber wall includes a front wall and a rear wall arranged opposite to each other, and the stirring paddle is detachably disposed between the front wall and the rear wall.

5. The plastic color matching machine according to claim 4, characterized in that, The stirring shaft and stirring paddle are rotatably positioned on the rear wall, which is detachably attached to the stirring chamber to allow the stirring paddle to be separated from the stirring chamber for cleaning.

6. The plastic color matching machine according to claim 4, characterized in that, The stirring shaft includes a fixed section and a movable section that are detachable from each other and can be connected in transmission. The fixed section is rotatably positioned on the rear wall, and the movable section is rotatably positioned on the front wall. The stirring paddle is attached to the movable section.

7. The plastic color matching machine according to claim 6, characterized in that, The front wall is detachably attached to the mixing chamber to separate the mixing blade from the mixing chamber for cleaning.

8. The plastic color matching machine according to claim 7, characterized in that, The movable section includes a support part and a positioning part that are separable from each other and can rotate relative to each other. The positioning part is rotatably fixed to the front wall, and the stirring paddle is fixed to the support part.

9. The plastic color matching machine according to claim 8, characterized in that, The support portion and the fixed section are separable from each other but are connected by transmission; the support portion has a non-circular groove, and the fixed section has a non-circular protrusion, which is inserted into the groove to achieve transmission connection.

10. The plastic color matching machine according to claim 1, characterized in that, The mixing chamber is also provided with an additive inlet, which is suitable for adding functional additives and is equipped with a seal.

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