An environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure

Abstract

This invention relates to the field of plastic recycling technology and discloses an environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure. The equipment includes an injection molding unit and a color powder machine installed at the feeding port of the injection molding unit. The color powder machine includes a feeding mechanism and a mixing mechanism. The feeding mechanism includes a hopper, which is vertically arranged and housed within the casing of the color powder machine via a partition and a dispensing assembly. A mixing chamber is located below the hopper and is horizontally arranged, rotatably connected to the casing via a mounting base. This environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure effectively solves the problems of long time required for color powder to fully diffuse into the gaps or surface of the mixed particles during the recycling and reuse of recycled plastic granules, and the need to clean the color powder machine and shut down the equipment when changing the color powder, leading to reduced production efficiency.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling technology, specifically to an environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure. Background Technology

[0002] A large amount of sprue material is generated during the injection molding process. Some of the sprue material can be recycled. After sorting, cleaning and reprocessing, it can be transformed into recycled plastic pellets. These recycled plastic pellets are mixed with new materials in a certain proportion and can be used to produce products with medium performance requirements, which reduces industrial waste and saves raw material costs for enterprises.

[0003] Before feeding the mixture of recycled plastic granules and virgin material into the injection molding machine, color powder is usually added to ensure the color uniformity of the injection molded product. The mixture is stirred to ensure that the three are fully mixed. A common method is to install a color powder machine at the discharge port of the injection molding machine to ensure that the mixture and color powder are fully mixed.

[0004] The following problems exist when mixing materials and pigments using a pigment mixer: First, it takes a long time for the pigment to fully diffuse into the gaps or surface of the mixed particles, which leads to a decrease in production efficiency; Second, when changing the pigment color, the pigment mixer needs to be cleaned, otherwise the residual pigment may cause cross-contamination in subsequent batches. The equipment needs to be stopped during the cleaning process, which leads to a decrease in production efficiency. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides an environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure. This equipment effectively solves the problems in existing technologies where, during the recycling and reuse of recycled plastic granules, it takes a long time for the color powder to fully diffuse into the gaps or surface of the mixed granules when the mixture is stirred by the color powder mixer. Furthermore, when changing the color powder, the color powder mixer needs to be cleaned, requiring the equipment to be shut down, which reduces production efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] This invention provides an environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure, comprising:

[0008] Injection molding section;

[0009] A color powder machine installed at the feeding port of the injection molding section; the color powder machine includes a feeding mechanism and a mixing mechanism. The feeding mechanism includes a hopper, which is vertically arranged and installed inside the housing of the color powder machine through a partition and a dispensing component. A mixing chamber is arranged below the hopper, which is horizontally arranged and rotatably connected to the housing through a mounting base. A material trough is opened on the outer circumference of the mixing chamber. Initially, the material trough is located directly above. A baffle is provided between the hopper and the mixing chamber.

[0010] The mixing mechanism includes two sealing plates symmetrically arranged. The sealing plate away from the movable door is fixedly connected to the mixing chamber, and the sealing plate closer to the movable door is rotatably connected to the mixing chamber and connected to the inside of the machine casing through a connecting plate. Both sealing plates are equipped with a scraping component that can clean the residual substances on the inner wall of the mixing chamber.

[0011] The upper end of the silo is fixedly connected to the raw material conveying channel. The mixing chamber is equipped with a mixing component for mixing raw materials and color powder. The sealing plate away from the movable door and the mixing component are connected to a drive device.

[0012] Furthermore, the material spreading assembly includes a material guide seat, which is rotatably connected to the partition plate and rotatably connected to the hopper. The bottom plate of the hopper is evenly provided with multiple discharge ports I along the circumference, and the material guide seat is provided with discharge ports II corresponding to the discharge ports I. The partition plate is also equipped with a driving device II for driving the material guide seat to rotate.

[0013] Furthermore, both the first and second discharge ports adopt a fan-shaped design, and the central angle of the first discharge port is smaller than that of the second discharge port. Multiple pusher plates are also uniformly fixedly connected to the lower end of the guide seat along the circumference.

[0014] Furthermore, a powder conveying pipe is fixedly connected to the center of the guide seat. The powder conveying pipe is fixedly connected to the hopper and has a bend pipe rotatably connected to its top end. The bend pipe is fixedly connected to the color powder conveying channel through a connecting pipe. A rotating seat is detachably installed at the lower end of the powder conveying pipe. The rotating seat is a cylindrical hollow structure, and the upper end face of its base plate adopts a conical design, so that the color powder falling on the base plate of the rotating seat automatically slides to the edge. Multiple discharge slots are evenly opened along the circumference on the side wall of the rotating seat.

[0015] Furthermore, the scraping assembly includes a mounting shaft, which is rotatably connected to the sealing plate near the movable door via a torsion spring and is positioned near the top of the sealing plate near the movable door. A sleeve is rotatably sleeved on the mounting shaft, and a trigger strip is fixedly connected to the outer circumference of the sleeve. A scraping strip is also fixedly connected to the outer circumference of the sleeve.

[0016] Furthermore, the included angle between the trigger strip and the scraper strip is an acute angle, and the length of the trigger strip is greater than the length of the scraper strip.

[0017] Furthermore, the scraper strip has a hollow design and is connected to the mounting shaft. A collection tube is slidably connected inside the mounting shaft, and a handle is fixedly connected to one end of the collection tube near the movable door.

[0018] Furthermore, the stirring assembly includes a rotating shaft, which is rotatably connected between two sealing plates and connected to a drive device. Stirring blades are fixedly connected to the rotating shaft, and scrapers are symmetrically arranged on the rotating shaft. The scrapers away from the movable door are fixedly connected to the inner wall of the mixing chamber and to the rotating shaft, while the scrapers close to the movable door are rotatably connected to the rotating shaft.

[0019] The technical solution provided by this invention has the following advantages compared with the prior art:

[0020] 1. In this invention, the mixture enters the silo through the raw material conveying channel, and the color powder enters the rotary seat through the color powder conveying channel. When the second drive device operates, it drives the guide seat and the powder conveying pipe to rotate, so that the discharge port one of the silo is aligned with the discharge port two of the guide seat. Under the action of centrifugal force and gravity, the mixture is rotated and thrown into the mixing silo. The color powder is rotated and thrown into the mixing silo from the discharge trough through the powder conveying pipe as the rotary seat rotates. Compared with the traditional vertical material dropping, this rotary throwing and feeding method evenly disperses the raw materials and color powder into each area of ​​the mixing silo, avoids central accumulation, reduces mixing time, and begins preliminary mixing during the feeding process, further shortening the subsequent mixing time and realizing the efficient mode of "feeding and premixing at the same time", which can effectively improve the mixing efficiency.

[0021] 2. When the drive shaft of the bidirectional motor in the first drive device of the present invention rotates clockwise, it drives the rotating shaft and stirring blades to rotate. The mixing chamber is stationary, and the stirring blades stir the mixture and color powder. At this time, the scraper near the movable door rotates with the rotating shaft and scrapes off the color powder on the corresponding sealing plate. The scraper away from the movable door is fixed on the rotating shaft and generates relative motion with the stationary sealing plate, scraping off the color powder on the sealing plate. While ensuring that the edge material is fully mixed, it can effectively eliminate the color powder residue on the surface of the sealing plate, prevent the residual color powder from affecting the color purity of subsequent batches, and improve product consistency.

[0022] 3. In this invention, after the mixture and color powder are stirred and mixed, the mixing chamber rotates as a whole under the drive of the first drive device. During the process of switching the material trough to the bottom, the mixing chamber will contact the trigger bar and push it to rotate. The scraper bar rotates synchronously with the trigger bar and abuts against the inner wall of the mixing chamber, scraping off the residual color powder on the inner circumference of the mixing chamber. When the mixing chamber rotates one revolution and resets, the trigger bar resets under the action of the torsion spring. The color powder in the scraper bar slides down the guide surface to the collection pipe due to the sharp angle structure. No manual intervention or machine stoppage is required during the cleaning process, avoiding the production capacity loss caused by traditional machine stoppage cleaning. It can effectively improve the mixing efficiency. Moreover, the hollow design of the scraper bar is connected to the collection pipe to form a "scraping-collection-conveying" closed loop, ensuring that no residual color powder is missed and avoiding contamination of the next batch of materials. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the color powder machine according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the feeding mechanism and mixing mechanism in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the feeding mechanism according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the disassembled structure of the feeding mechanism according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the mixing mechanism according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the hybrid mechanism in the disassembled state according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the scraping component according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the scraping component in an exploded state according to an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the structure of the bushing before and after the change of the bushing state in an embodiment of the present invention.

[0034] The labels in the diagram represent: 1. Injection molding section; 2. Powder generator; 3. Feeding mechanism; 31. Hopper; 311. Outlet 1; 32. Spreading assembly; 321. Guide seat; 3211. Outlet 2; 33. Mixing hopper; 34. Baffle; 35. Powder conveying pipe; 36. Rotary seat; 361. Outlet chute; 4. Mixing mechanism; 41. Sealing plate; 42. Scraping assembly; 421. Mounting shaft; 422. Sleeve; 423. Trigger bar; 424. Scraper bar; 425. Collection pipe; 426. Handle; 43. Mixing assembly; 431. Rotating shaft; 432. Mixing blade; 433. Scraper bar; 5. Drive device 1; 6. Drive device 2. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] The present invention will be further described below with reference to the embodiments.

[0037] Example:

[0038] Please see Figures 1-10 This invention provides a technical solution: an environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure, comprising:

[0039] Injection molding section 1;

[0040] A color powder machine 2 is installed at the feeding port of the injection molding section 1; the color powder machine 2 includes a feeding mechanism 3 and a mixing mechanism 4. The feeding mechanism 3 includes a hopper 31. The hopper 31 is vertically arranged and is installed inside the housing of the color powder machine 2 through a partition and a material spreading component 32. A mixing chamber 33 is arranged below the hopper 31. The mixing chamber 33 is arranged horizontally and is rotatably connected to the housing through a mounting base. A material trough is opened on the outer circumference of the mixing chamber 33. Initially, the material trough is directly above. A baffle 34 is arranged between the hopper 31 and the mixing chamber 33.

[0041] The mixing mechanism 4 includes a sealing plate 41. Two sealing plates 41 are symmetrically arranged. The sealing plate 41 away from the movable door is fixedly connected to the mixing chamber 33, and the sealing plate 41 near the movable door is rotatably connected to the mixing chamber 33 and connected to the inside of the housing through a connecting plate. The two sealing plates 41 are jointly equipped with a scraping component 42 that can clean the residual substances on the inner wall of the mixing chamber 33.

[0042] The upper end of the hopper 31 is fixedly connected to the raw material conveying channel. The mixing hopper 33 is equipped with a mixing component 43 for mixing raw materials and color powder. The sealing plate 41 away from the movable door and the mixing component 43 are connected to a drive device 5.

[0043] The material spreading assembly 32 includes a material guide seat 321, which is rotatably connected to the partition and rotatably connected to the hopper 31. The bottom plate of the hopper 31 is evenly provided with a plurality of discharge ports 311 along the circumference. The material guide seat 321 is provided with a discharge port 3211 corresponding to the discharge port 311. The partition is also equipped with a drive device 6 for driving the material guide seat 321 to rotate.

[0044] Both the first discharge port 311 and the second discharge port 3211 adopt a fan-shaped design, and the central angle of the first discharge port 311 is smaller than that of the second discharge port 3211. The lower end face of the guide seat 321 is also uniformly fixed with multiple pusher plates along the circumference to increase the scattering range of the mixture.

[0045] A powder conveying pipe 35 is fixedly connected to the center of the guide seat 321. The powder conveying pipe 35 is fixedly connected to the hopper 31 and has a curved pipe rotatably connected to its top end. The curved pipe is fixedly connected to the color powder conveying channel through a connecting pipe. A rotating seat 36 is detachably installed at the lower end of the powder conveying pipe 35. The rotating seat 36 is a cylindrical hollow structure, and the upper end face of its bottom plate adopts a conical design, so that the color powder falling on the bottom plate of the rotating seat 36 automatically slides to the edge. Multiple discharge grooves 361 are evenly opened along the circumference on the side wall of the rotating seat 36.

[0046] Specifically, the mixture formed by mixing recycled plastic granules and virgin materials in a specific ratio enters the silo 31 through the raw material conveying channel. Initially, the corresponding discharge ports 1 311 and 2 3211 are misaligned, and the mixture is temporarily stored in the silo 31 due to the obstruction of the guide seat 321. When the drive device 2 6 is started, it drives the guide seat 321 and the powder conveying pipe 35 to rotate synchronously, so that the discharge ports 1 311 and 2 3211 change from a misaligned state to an aligned state. Under the action of centrifugal force and its own gravity, the mixture rotates and is thrown into the mixing chamber 33. At the same time, the color powder is conveyed to the rotating seat 36 in sequence through the color powder conveying channel, connecting pipe, bend pipe and powder conveying pipe 35, and then rotates and is thrown into the mixing chamber 33 along the discharge trough 361 with the rotation of the rotating seat 36 and the powder conveying pipe 35, and mixes with the mixture.

[0047] Furthermore, during the process of the guide seat 321 rotating relative to the hopper 31 and rotating and scattering the mixture into the mixing hopper 33, since both the discharge port 1 311 and the discharge port 2 3211 adopt a fan-shaped design, and the central angle of the discharge port 1 311 is smaller than that of the discharge port 2 3211, the mixture will not get stuck in the gap between the two during the process of misalignment, thus preventing the rotation of the guide seat 321 from being obstructed.

[0048] This rotary feeding process has significant advantages: First, it expands the feeding range of raw materials and color powder, allowing them to be evenly dispersed throughout the mixing chamber 33. Compared to the traditional vertical feeding method, it effectively avoids the accumulation of raw materials and color powder in the central area of ​​the mixing chamber 33, thereby shortening the mixing time and significantly improving mixing efficiency. Second, during the feeding process, the raw materials and color powder begin to mix initially, further shortening the subsequent mixing time and thus further improving mixing efficiency.

[0049] It is worth noting that the aforementioned drive device 2 6 is preferably a gear transmission device driven by a servo motor, so that when the rotation stops each time, the discharge port 1 311 can be reset to the misaligned state with the corresponding discharge port 2 3211. During the process of the guide seat 321 rotating and scattering the mixture, the baffle 34 plays the role of blocking and guiding the material, preventing the mixture from falling outside the mixing chamber 33.

[0050] The scraping assembly 42 includes a mounting shaft 421, which is rotatably connected to the sealing plate 41 near the movable door via a torsion spring and is positioned near the top of the sealing plate 41 near the movable door. A sleeve 422 is rotatably sleeved on the mounting shaft 421. A trigger bar 423 is fixedly connected to the outer circumference of the sleeve 422, and a scraping bar 424 is also fixedly connected to the outer circumference of the sleeve 422. The included angle between the trigger bar 423 and the scraping bar 424 is an acute angle, and the length of the trigger bar 423 is greater than the length of the scraping bar 424.

[0051] The scraper 424 is hollow and connected to the mounting shaft 421. A collection tube 425 is slidably connected inside the mounting shaft 421. A handle 426 is fixedly connected to one end of the collection tube 425 near the movable door.

[0052] The stirring assembly 43 includes a rotating shaft 431, which is rotatably connected between two sealing plates 41 and connected to the drive device 5. Stirring blades 432 are fixedly connected to the rotating shaft 431. Scrapers 433 are also symmetrically arranged on the rotating shaft 431. The scrapers 433 away from the movable door are rotatably connected to the inner wall of the mixing chamber 33 and fixedly connected to the rotating shaft 431. The scrapers 433 near the movable door are fixedly connected to the rotating shaft 431.

[0053] It is worth noting that the drive unit 5 consists of a bidirectional motor and a limiting structure connected to the rotating shaft 431 and the sealing plate 41. The limiting structure is preferably a ratchet and pawl structure (such as...). Figure 7 As shown in the diagram, this is the prior art. The drive device 5 can achieve the following effect: when the drive shaft of the bidirectional motor rotates counterclockwise, it will drive the mixing chamber 33 to rotate counterclockwise synchronously. At this time, the rotating shaft 431 remains stationary under the restriction of the ratchet and pawl structure connected to it. When the drive shaft of the bidirectional motor rotates clockwise, it will drive the rotating shaft 431 and the stirring blade 432 to rotate clockwise synchronously. At this time, the mixing chamber 33 remains stationary.

[0054] Specifically, after the mixture in the hopper 31 and the color powder in the powder conveying pipe 35 have completely entered the mixing chamber 33, the second drive device 6 stops running, and the drive shaft of the bidirectional motor in the first drive device 5 starts to rotate clockwise, thereby driving the rotating shaft 431 and the stirring blade 432 fixed thereon to rotate clockwise synchronously. Under the action of the stirring blade 432, the mixture in the mixing chamber 33 and the color powder are fully mixed.

[0055] During this mixing process, the scraper 433, which is close to the movable door and fixedly connected to the rotating shaft 431, rotates synchronously with the rotating shaft 431, which can scrape off the pigment powder attached to the corresponding sealing plate 41. The scraper 433, which is far away from the movable door, is fixedly connected to the rotating shaft 431 and remains rotating during the mixing process. Since the corresponding sealing plate 41 is fixedly connected to the mixing chamber 33 and remains stationary, the rotating scraper 433 and the stationary sealing plate 41 will have relative motion, which can also scrape off the pigment powder on the sealing plate 41.

[0056] After the mixture and color powder are fully mixed for a preset mixing time, the bidirectional motor drive shaft switches to counterclockwise rotation and drives the mixing chamber 33 to rotate counterclockwise one revolution. During the rotation, when the material trough rotates to the lower position, the fully mixed material in the mixing chamber 33 automatically falls to the bottom of the color powder machine 2 under the action of gravity, and then enters the injection molding section 1. After the material is heated and melted in the barrel of the injection molding section 1, it is injected into the mold cavity under high pressure and then cooled and solidified to form a plastic product.

[0057] In the initial stage of the counterclockwise rotation of the mixing chamber 33, as the material trough gradually rotates downwards, the mixing chamber 33 will come into contact with the trigger bar 423 and push it to rotate from a vertical state to an inclined state. Under the action of the torsion spring restoring force, the upper end of the trigger bar 423 always abuts against the inner circumference of the mixing chamber 33. The scraper bar 424 fixed on the trigger bar 423 rotates synchronously with the trigger bar 423, and its working surface also abuts against the inner circumference of the mixing chamber 33. As the mixing chamber 33 continues to rotate, the scraper bar 424 scrapes off the residual color powder adhering to the inner wall of the mixing chamber 33, realizing the self-cleaning function of the inner wall of the mixing chamber 33.

[0058] When the mixing chamber 33 rotates to the final stage, that is, when the material trough completes one revolution and returns to the initial position, the trigger bar 423 is reset to the vertical state under the action of the torsion spring and is locked into the material trough. The color powder collected in the guide groove of the scraper bar 424 slides down from high to low along the inclined guide surface under the action of gravity to the corresponding collection pipe 425 below, realizing the automatic collection of residual color powder. The collected color powder can be recycled and reused, effectively reducing material loss and production costs.

[0059] In this embodiment, the mixing chamber 33 is driven to rotate by a bidirectional motor. Combined with a dynamic and static scraping structure, the material is mixed evenly while the residual material on the inner wall is automatically cleaned and collected. This solves the problems of material residue and inconvenient cleaning that exist in traditional mixing equipment, and significantly improves the automation level and material utilization rate of the equipment.

[0060] It is worth noting that the above-mentioned environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure also has the following advantages:

[0061] Advantage 1: In this embodiment, the mixture enters the silo 31 through the raw material conveying channel, and the color powder enters the rotary seat 36 through the color powder conveying channel. When the second drive device 6 operates, it drives the guide seat 321 and the powder conveying pipe 35 to rotate, so that the discharge port 311 of the silo 31 is aligned with the discharge port 3211 of the guide seat 321. Under the action of centrifugal force and gravity, the mixture is rotated and thrown into the mixing chamber 33. The color powder is rotated and thrown into the mixing chamber 33 from the discharge trough 361 through the powder conveying pipe 35 along with the rotary seat 36. Compared with the traditional vertical dropping method, this rotary throwing method evenly disperses the raw materials and color powder into each area of ​​the mixing chamber 33, avoids central accumulation, reduces mixing time, and begins preliminary mixing during the feeding process, further shortening the subsequent mixing time and realizing the efficient mode of "feeding and premixing at the same time", which can effectively improve the mixing efficiency.

[0062] Advantage 2: In this embodiment, when the drive shaft of the bidirectional motor in the drive device 5 rotates clockwise, it drives the rotating shaft 431 and the stirring blade 432 to rotate. The mixing chamber 33 is stationary, and the stirring blade 432 stirs the mixture and the color powder. At this time, the scraper 433 near the movable door rotates with the rotating shaft 431 and scrapes off the color powder on the corresponding sealing plate 41. The scraper 433 away from the movable door is also fixed on the rotating shaft and generates relative movement with the stationary sealing plate 41, scraping off the color powder on the sealing plate 41. While ensuring that the edge materials are fully mixed, it can effectively eliminate the color powder residue on the surface of the sealing plate 41, prevent the residual color powder from affecting the color purity of subsequent batches, and improve product consistency.

[0063] Advantage 3: In this embodiment, after mixing is completed, the drive shaft of the bidirectional motor rotates counterclockwise, causing the mixing chamber 33 to rotate as a whole. When the material trough turns downward, the mixing chamber 33 will push the trigger bar 423 to rotate. The scraper bar 424 rotates synchronously with the trigger bar 423 and abuts against the inner wall of the mixing chamber 33, scraping off the residual color powder. When the mixing chamber 33 rotates one revolution and resets, the trigger bar 423 resets under the action of the torsion spring. The color powder in the scraper bar 424 slides down the guide surface to the collection pipe 425 due to the sharp angle structure. No manual intervention or machine stoppage is required during the cleaning process, avoiding the production capacity loss caused by traditional machine stoppage cleaning. It can effectively improve the mixing efficiency. Moreover, the hollow design of the scraper bar 424 is connected to the collection pipe 425, forming a "scraping-collection-conveying" closed loop, ensuring that no residual color powder is missed and avoiding contamination of the next batch of materials.

[0064] Fourthly, in this embodiment, the residual pigment in the collection pipe 425 can be recycled and reused and reintroduced into the mixing chamber 33, which can effectively reduce pigment waste, improve material utilization, and save production costs. It is especially suitable for scenarios where pigments are frequently replaced. At the same time, it can also avoid treating the residual pigment as waste, which meets environmental protection requirements.

[0065] Advantage 5: In this embodiment, when the mixing chamber 33 rotates counterclockwise under the drive of the bidirectional motor drive shaft, the material trough rotates downwards, and the mixed material automatically falls to the bottom of the color powder machine 2 and enters the injection molding section 1. The material trough design makes the material fall smoothly, avoiding the problem of blockage at the traditional feeding port, and improving the stability of the equipment. At the same time, the trigger bar 423 drives the scraper bar 424 to complete the inner wall cleaning and color powder collection. The feeding and cleaning are carried out simultaneously, which can shorten the production cycle of a single batch, improve the degree of automation, and reduce human operation errors.

[0066] Advantage 6: In this embodiment, the rotary seat 36 and the powder conveying pipe 35 are detachably connected, which makes it easy to replace the rotary seat 36 of different specifications to adapt to different particle sizes of pigments. The mounting shaft 421, collection pipe 425 and other components of the scraping component 42 can be quickly disassembled, which facilitates regular deep cleaning, improves the convenience of equipment maintenance, shortens the single maintenance time, and reduces downtime maintenance costs.

[0067] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure, characterized in that, include: Injection molding section (1); A color powder machine (2) is installed at the feeding port of the injection molding section (1). The color powder machine (2) includes a feeding mechanism (3) and a mixing mechanism (4). The feeding mechanism (3) includes a hopper (31). The hopper (31) is vertically arranged and installed in the housing of the color powder machine (2) through a partition and a feeding component (32). A mixing chamber (33) is arranged below the hopper (31). The mixing chamber (33) is horizontally arranged and rotatably connected to the housing through a mounting base. A material groove is opened on the outer circumference of the mixing chamber (33). A baffle (34) is arranged between the hopper (31) and the mixing chamber (33). The mixing mechanism (4) includes a sealing plate (41), and two sealing plates (41) are symmetrically arranged. The sealing plate (41) away from the movable door in the pigment machine (2) is fixedly connected to the mixing chamber (33), and the sealing plate (41) close to the movable door in the pigment machine (2) is rotatably connected to the mixing chamber (33) and connected to the inside of the machine casing through a connecting plate. Both sealing plates (41) are equipped with a scraping component (42) that can clean the residual substances on the inner wall of the mixing chamber (33). The upper end of the hopper (31) is fixedly connected to the raw material conveying channel. The mixing hopper (33) is equipped with a stirring assembly (43) for stirring raw materials and color powder. The sealing plate (41) away from the movable door and the stirring assembly (43) are connected together with a drive device (5). The material spreading component (32) includes a material guide seat (321), which is rotatably connected to the partition and rotatably connected to the hopper (31). The bottom plate of the hopper (31) is evenly provided with multiple discharge ports one (311) along the circumference. The material guide seat (321) is provided with a discharge port two (3211) corresponding to the discharge port one (311). The partition is also equipped with a driving device two (6) for driving the material guide seat (321) to rotate. Among them, a powder conveying pipe (35) is fixedly connected to the center of the guide seat (321). The powder conveying pipe (35) rotates through the bottom plate of the hopper (31) and the top end rotates to connect with a bend pipe. The bend pipe passes through the hopper (31) and is connected to the color powder conveying channel through a connecting pipe. A rotating seat (36) is detachably installed at the lower end of the powder conveying pipe (35). The rotating seat (36) is a cylindrical hollow structure, and the upper end surface of its bottom plate adopts a conical design, so that the color powder falling on the bottom plate of the rotating seat (36) automatically slides to the edge. Multiple discharge slots (361) are evenly opened along the circumference on the side wall of the rotating seat (36). The scraping assembly (42) includes a mounting shaft (421), which is rotatably connected to the sealing plate (41) near the movable door by a torsion spring and is positioned near the top of the sealing plate (41) near the movable door. A sleeve (422) is rotatably sleeved on the mounting shaft (421), and a trigger strip (423) is fixedly connected to the outer circumference of the sleeve (422). A scraping strip (424) is also fixedly connected to the outer circumference of the sleeve (422). The included angle between the trigger bar (423) and the scraper bar (424) is an acute angle, and the length of the trigger bar (423) is greater than the length of the scraper bar (424). Among them, the drive device 1 (5) includes a bidirectional motor. When the drive shaft of the bidirectional motor rotates counterclockwise, it will drive the mixing chamber (33) to rotate counterclockwise synchronously. At this time, the rotating shaft (431) remains stationary under the restriction of the ratchet and pawl structure connected to it. When the drive shaft of the bidirectional motor rotates clockwise, it will drive the rotating shaft (431) and the stirring blade (432) to rotate clockwise synchronously. At this time, the mixing chamber (33) remains stationary.

2. The environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure according to claim 1, characterized in that: Both the first discharge port (311) and the second discharge port (3211) adopt a fan-shaped design, and the central angle of the first discharge port (311) is smaller than that of the second discharge port (3211). Multiple push plates are also uniformly fixedly connected to the lower end of the guide seat (321) along the circumference.

3. The environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure according to claim 1, characterized in that: The scraper (424) is hollow and connected to the mounting shaft (421). A collection tube (425) is slidably connected inside the mounting shaft (421). A handle (426) is fixedly connected to one end of the collection tube (425) near the movable door.

4. The environmentally friendly injection molding equipment for plastic products based on a sorting and feeding structure according to claim 1, characterized in that: The stirring assembly (43) includes a rotating shaft (431). One end of the rotating shaft (431) rotates through the sealing plate (41) away from the movable door and is connected to the drive device (5). A stirring blade (432) is fixedly connected to the rotating shaft (431). Scrapers (433) are also symmetrically arranged on the rotating shaft (431). The scraper (433) away from the movable door is rotatably connected to the inner wall of the mixing chamber (33) and fixedly connected to the rotating shaft (431). The scraper (433) close to the movable door is fixedly connected to the rotating shaft (431).

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