An automatic raw material batching system and a batching method thereof

Abstract

The application relates to an automatic raw material batching system and a batching method thereof, and belongs to the field of plastic production. The automatic raw material batching system comprises a rack, a mixing tank arranged on the rack, and a plurality of transfer storage tanks connected with the mixing tank through feeding channels. The feeding channels comprise feeding sections and discharging sections arranged at two ends of the feeding channels. The ports of the feeding sections are connected with air blowing devices arranged on the rack. First connecting ports are arranged on the feeding sections and connected with corresponding transfer storage tanks. The discharging sections are arranged in the mixing tank and are in the shape of straight channels. The ports of the discharging sections are arranged towards the center line of the mixing tank. The center lines of all the discharging sections arranged in the mixing tank intersect at a point, forming an intersection point. The intersection point is located on the center line of the mixing tank. The application can effectively improve the uniformity of material mixing in the batching process.

Description

Technical Field

[0001] This invention relates to the field of plastics production, and in particular to an automatic raw material batching system and its batching method. Background Technology

[0002] Plastics refer to materials that are primarily composed of resin, with additives such as plasticizers, fillers, lubricants, and colorants as auxiliary components, and can be flowed and molded during processing. The production process includes: mixing: uniformly mixing one or more resins with plastic additives such as stabilizers, plasticizers, fillers, lubricants, and colorants to obtain a dry mix; and molding: processing the dry mix using plastic molding processes such as extrusion molding, injection molding, and compression molding to obtain plastic products with specific shapes.

[0003] Currently, in the batching process, to ensure uniform mixing of resins with stabilizers, plasticizers, fillers, lubricants, colorants, and other plastic additives, continuous stirring is required. For example, patent document CN209851361U discloses a batching and mixing device for plastic particles. This device uses a motor to drive a shaft to rotate, causing the stirring blades to agitate the materials inside the tank. Simultaneously, a pump extracts material from the bottom of the tank and introduces it back into the tank through a circulating feed inlet, preventing the accumulation of raw material at the bottom and improving the quality of material mixing. However, while this patented batching and mixing device can extract material from the bottom of the tank during stirring to prevent accumulation, the method for achieving uniform mixing still relies on stirring. Therefore, it is still difficult to prevent stratification due to differences in density during stirring, leading to a reduction in the uniformity of the mixture. Based on this, the present invention provides an automatic raw material batching system and a batching method thereof, which replaces stirring to uniformly mix resins and plastic additives, thereby fundamentally improving the mixing uniformity of resins and plastic additives. Summary of the Invention

[0004] Therefore, it is necessary to provide an automatic raw material batching system, including a frame, on which a mixing tank and several intermediate storage tanks connected to the mixing tank via feeding channels are arranged. The feeding channels include inlet sections and outlet sections at both ends. The port of the inlet section is connected to a blower device arranged on the frame, and the inlet section also has a first connection port connected to the corresponding intermediate storage tank. The outlet section is located inside the mixing tank, and the outlet section is in the shape of a straight channel, with its port facing the center line of the mixing tank. The extension lines of the center lines of all the outlet sections located inside the mixing tank intersect at a point, forming an intersection point located on the center line of the mixing tank.

[0005] In this invention, the transfer storage tank is used to transfer and store the resin particles and plastic additive particles to be mixed, and then the resin particles or plastic additive particles in the tank are transported to the mixing tank through the feeding channel for mixing.

[0006] In this invention, the feeding process of the feeding channel is as follows: the blower operates, using high-speed airflow to transport resin particles or plastic additive particles flowing from the intermediate storage tank into the feeding section to the discharge section, causing the resin particles or plastic additive particles to be ejected from the port of the discharge section. Since the discharge sections are all oriented towards the confluence point, the resin particles and plastic additive particles ejected from the discharge sections will mix and collide at the confluence point, and then fall randomly into the mixing tank. Furthermore, after passing the confluence point, the resin particles and plastic additive particles ejected from the discharge sections will contact the inner wall of the mixing tank and rebound upon contact, thus preventing the resin particles or plastic additive particles ejected from the discharge sections from accumulating in the spray direction. As can be seen, by setting up multiple intermediate storage tanks and corresponding multiple feeding channels, the present invention can simultaneously transport resin particles and plastic additive particles to the mixing tank, and make the resin particles and plastic additive particles uniformly mixed in the mixing tank due to mutual impact and collision. Compared with setting a stirring device in the mixing tank to stir the resin particles and plastic additive particles in the mixing tank, it can effectively avoid the phenomenon of density stratification of resin particles and plastic additive particles in the mixing tank due to different densities, thereby effectively improving the mixing uniformity of resin particles and plastic additive particles.

[0007] Furthermore, the outlet section has its port angled downwards.

[0008] In this invention, all discharge sections are tilted downwards, which effectively prevents resin particles and plastic additive particles ejected from the discharge section from being ejected from the mixing tank through the opening above the mixing tank via the side wall.

[0009] Furthermore, a partition plate is also provided inside the mixing tank. The partition plate is located below the discharge section, dividing the mixing tank into a collection space and a storage space. The partition plate is funnel-shaped with a concave center, and a window is formed at the bottom of the partition plate.

[0010] In this invention, the resin particles and plastic additive particles sprayed into the mixing tank via the discharge section are ejected by the side wall of the mixing tank and then further ejected by the partition plate, which can further increase the mixing uniformity of the resin particles and plastic additive particles in the mixing tank. After the ejection stops, the resin particles and plastic additive particles fall to the bottom of the mixing tank through the openings in the partition plate.

[0011] Furthermore, a discharge pipe is provided at the bottom of the mixing tank, and a valve is provided on the discharge pipe.

[0012] Furthermore, the discharge section gradually expands towards the intersection point to form an expansion section.

[0013] In this invention, when the high-speed airflow carries the resin particles and plastic additive particles away from the discharge section, the periphery of the high-speed airflow will flow along the inner wall of the expansion section. Therefore, the existence of the expansion section can increase the range of resin particles and plastic additive particles sprayed from the discharge section, reduce their concentration, and further increase the mixing uniformity of resin particles and plastic additive particles.

[0014] Furthermore, the transfer storage tank includes an outer tank body and an inner tank body disposed within the outer tank body. The outer tank body is connected to the feeding section via a first connection port. An installation platform is also rotatably disposed within the outer tank body. The inner tank body is mounted on the installation platform, and a weighing sensor is disposed between the inner tank body and the installation platform. The inner tank body is mounted on the installation platform via the weighing sensor. The inner tank body is installed by mounting it onto the weighing sensor fixedly disposed on the installation platform; the fixing structure can be a bolt-fixed structure.

[0015] In this invention, the transfer process of resin particles and plastic additive particles in the transfer storage tank is as follows: First, the inner tank receives the resin particles or plastic additive particles. After the amount of resin particles or plastic additive particles in the inner tank reaches a preset amount, the resin particles or plastic additive particles in the inner tank are then poured into the outer tank. The preset amount of resin particles and plastic additive particles is the weight required for one mixing process. The required weight is set according to the formulation ratio of the ingredients. The criterion for determining whether the amount of resin particles or plastic additive particles in the inner tank has reached the preset amount is whether the weight of the inner tank measured by the weighing sensor reaches the preset value.

[0016] As can be seen, this invention allows for the segmented mixing of resin particles and plastic additive particles, and controls the amount of resin particles and plastic additive particles entering the outer tank during each mixing process, ensuring they are configured according to the ingredient ratio. This ensures that after each mixing, the resulting material in the outer tank is a dry mix that is strictly mixed according to the predetermined ratio and is ready for the next molding operation. Compared to continuous mixing, this further improves the uniformity of the mixing of resin particles and plastic additive particles. Preferably, during each mixing process, the blower simultaneously conveys all resin particles or plastic additive particles in the outer tank, and simultaneously conveys all vertical particles or plastic additive particles in the outer tank.

[0017] Furthermore, it also includes a feeding mechanism, which includes a feeding tank and a feeding pipe mounted on the frame, the feeding pipe being used to connect the feeding tank and the inner tank.

[0018] In this invention, the feeding tank is used to store resin particles and plastic additive particles, and the feeding pipe is used to transport the resin particles and plastic additive particles stored in the feeding tank to the inner tank.

[0019] Furthermore, the feeding pipe includes a pipe body mounted on the frame, one end of which extends above the inner tank to form a feeding port. A second connection port is also provided on the side wall of the end of the pipe body away from the feeding port, connecting to the feeding tank. A spiral rod is disposed within the pipe body, comprising a rod body and a spiral component mounted on the rod body. The spiral component is located inside the pipe body, and both ends of the rod body extend out of the pipe body. Two mounting seats are provided on the frame corresponding to the portions of the rod body extending out of the pipe body, respectively located on both sides of the pipe body. A portion of the tube body is rotatably connected to each of the two mounting bases. A driving device is also provided on the frame corresponding to the rod body. This driving device is connected to the portion of the rod body extending out of the tube body to drive the rod body to rotate. The rod body includes an outer tube with an opening at one end away from the feeding port and an inner tube with openings at both ends, located within the outer tube. One end of the inner tube is located at and flush with the opening of the outer tube. A communication gap exists between the other end of the inner tube and the bottom of the outer tube, forming a water inlet channel. This water inlet channel communicates with the internal space of the inner tube through the communication gap. The inner tube is connected to the outer tube via a connecting rod located within the water inlet channel.

[0020] In this invention, the resin particles or plastic additive particles in the feeding tank will flow into the pipe body connected to it through the second connection port under the action of gravity. At this time, by rotating the rod, the spiral on the rod can transport the resin particles or plastic additive particles in the pipe body, thereby transporting them to the inner tank.

[0021] The end of the rod furthest from the feeding port is connected to a heat exchange water supply system via a dual-channel rotary joint. Specifically, hot water enters the rod through the inlet channel, then enters the inner space of the inner tube through the connecting gap, and then leaves the rod. During this process, the heat of the hot water is exchanged with the rod and the spiral on the rod. Therefore, the feeding pipe of this invention can heat the resin particles and plastic additive particles during the conveying process, thereby allowing the moisture on the resin particles and plastic additive particles to evaporate rapidly after they leave the discharge section, thus drying the resin particles and plastic additive particles. This improves the accuracy of the weighing structure of the weighing sensor and the quality of the mixed dry material, thereby improving the quality of the produced plastic.

[0022] In addition, the present invention uses rods and spirals to heat resin particles and plastic additive particles. The surfaces of the rods and spirals are effective heating areas, which means that the present invention can effectively increase the heating area and thus effectively improve the heating effect.

[0023] The present invention also provides a batching method for an automatic raw material batching system, characterized by comprising the following steps:

[0024] S1. Add the resin granules and plastic additive granules to be mixed into the corresponding feeding tanks respectively.

[0025] S2, resin granules and various plastic additive granules enter the corresponding inner tank along the feeding pipe, and at the same time, the weighing sensor detects the weight of the corresponding inner tank in real time.

[0026] S3. Once the weight of the inner tank reaches the preset value, stop the corresponding feeding pipe from conveying resin particles or plastic additive particles. After all the inner tanks have reached the preset value, flip the inner tanks and pour the resin particles or plastic additive particles inside into the outer tanks. Then, the inner tanks are reset and continue to receive resin particles or plastic additive particles from the feeding pipes. A blower is used to convey all the resin particles and plastic additive particles in the outer tanks to the mixing tank. At this point, one mixing operation is completed. Repeat this process to continuously mix the resin particles and plastic additive particles in the feeding tanks.

[0027] When the weight of the inner tank reaches the preset value, it means that the weight of the resin particles or plastic additive particles contained in the inner tank has reached the preset value. The preset weight of the resin particles and plastic additive particles is the weight required for one mixing process, and the required weight is set according to the formula ratio of the ingredients.

[0028] Furthermore, in step S3, the blower connected to the outer tank simultaneously conveys the resin particles or plastic additive particles in all the outer tanks, and simultaneously conveys all the vertical particles or plastic additive particles in all the outer tanks.

[0029] During each mixing process of resin granules and plastic additive granules, the blower simultaneously conveys all resin granules or plastic additive granules in all outer tanks, and simultaneously conveys all vertical granules or plastic additive granules in all outer tanks. That is, during the spraying process in the discharge section, all resin granules and plastic additive granules are mixed at all times, which can effectively ensure the uniformity of mixing of resin granules and plastic additive granules.

[0030] The principles and effects of the present invention will be further explained below with reference to the above technical solutions and accompanying drawings:

[0031] This invention, through the arrangement of multiple intermediate storage tanks and corresponding multiple feeding channels, can simultaneously transport resin particles and plastic additive particles to the mixing tank, ensuring that the resin particles and plastic additive particles are uniformly mixed in the mixing tank due to mutual impact and collision. Compared to setting up a stirring device in the mixing tank to stir the resin particles and plastic additive particles, this invention can effectively avoid the phenomenon of density stratification of the resin particles and plastic additive particles in the mixing tank due to different densities, thereby effectively improving the mixing uniformity of the resin particles and plastic additive particles. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the automatic raw material batching system described in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the cooperation structure between the feeding mechanism and the transfer storage tank according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of the rod described in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Mixing tank, 11-Partition plate, 111-Window, 12-Discharge pipe, 2-Transfer storage tank, 21-Outer tank body, 22-Inner tank body, 23-Mounting platform, 24-Weighing sensor, 31-Feeding section, 311-First connection port, 32-Discharge section, 321-Expansion section, 4-Blower, 5-Feeding tank, 61-Pipe body, 611-Second connection port, 621-Rod body, 6211-Outer pipe, 6212-Inner pipe, 6213-Connecting rod, 6214-Water inlet channel, 6215-Connecting gap, 622-Spiral body, 7-Mounting base, 8-Dual-channel rotary joint. Detailed Implementation

[0037] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0038] like Figure 1-3 An automatic raw material batching system includes a frame (not shown in the figure), on which a mixing tank 1 and several intermediate storage tanks connected to the mixing tank 1 via feeding channels are mounted. The feeding channels include an inlet section 31 and an outlet section 32 located at both ends. The port of the inlet section 31 is connected to a blower 4 mounted on the frame. The inlet section 31 also has a first connection port 311, which is connected to the corresponding intermediate storage tank. The outlet section 32 is located inside the mixing tank 1. The outlet section 32 is a straight channel, and its port faces the centerline of the mixing tank 1. The extensions of the centerlines of all the outlet sections 32 located inside the mixing tank 1 converge at a point, forming an intersection point located on the centerline of the mixing tank 1.

[0039] In this invention, the transfer storage tank 2 is used to transfer and store the resin particles and plastic additive particles to be mixed, and then the resin particles or plastic additive particles in it are transported to the mixing tank 1 through the feeding channel for mixing.

[0040] In this invention, the feeding process of the feeding channel is as follows: the blower 4 operates, using high-speed airflow to transport resin particles or plastic additive particles flowing from the transfer storage tank into the feeding section 31 to the discharge section 32, causing the resin particles or plastic additive particles to be ejected from the port of the discharge section 32. Since the discharge sections 32 are all oriented towards the confluence point, the resin particles and plastic additive particles ejected from the discharge sections 32 will mix and collide at the confluence point, and then fall randomly into the mixing tank 1. Furthermore, after passing the confluence point, the resin particles and plastic additive particles ejected from the discharge sections 32 will contact the inner wall of the mixing tank 1 and rebound after contact, thus preventing the resin particles or plastic additive particles ejected from the discharge sections 32 from accumulating in the spray direction. As can be seen, by setting up multiple intermediate storage tanks 2 and corresponding multiple feeding channels, the present invention can simultaneously transport resin particles and plastic additive particles to the mixing tank 1, so that the resin particles and plastic additive particles are mixed evenly in the mixing tank 1 due to mutual impact and collision. Compared with setting a stirring device in the mixing tank 1 to stir the resin particles and plastic additive particles in the mixing tank 1, it can effectively avoid the phenomenon of density stratification of resin particles and plastic additive particles in the mixing tank 1 due to different densities, thereby effectively improving the mixing uniformity of resin particles and plastic additive particles.

[0041] In one embodiment, the outlet section 32 is inclined downwards.

[0042] In this embodiment, all the ports of the discharge section 32 are tilted downwards, which can effectively prevent the resin particles and plastic additive particles sprayed out of the discharge section 32 from being ejected from the mixing tank 1 through the opening above the mixing tank 1 via the side wall of the mixing tank 1.

[0043] In one embodiment, a partition plate 11 is also provided inside the mixing tank 1. The partition plate 11 is located below the discharge section 32 and divides the mixing tank 1 into a material collection space and a material storage space. The partition plate 11 is in the shape of a funnel with a concave center and has a window 111 at its bottom end.

[0044] In this embodiment, the resin particles and plastic additive particles sprayed into the mixing tank 1 via the discharge section 32, after being ejected by the side wall of the mixing tank 1, can continue to be ejected by the partition plate 11, which can further increase the mixing uniformity of the resin particles and plastic additive particles in the mixing tank 1. After the resin particles and plastic additive particles stop being ejected, they fall to the bottom of the mixing tank 1 through the opening 111 on the partition plate 11.

[0045] In one embodiment, a discharge pipe 12 is provided at the bottom of the mixing tank 1, and a valve is provided on the discharge pipe 12.

[0046] In one embodiment, the discharge section 32 gradually expands towards the intersection point to form an expansion section 321.

[0047] In this embodiment, when the high-speed airflow carries the resin particles and plastic additive particles away from the discharge section 32, the periphery of the high-speed airflow will flow along the inner sidewall of the expansion section 321. Therefore, the presence of the expansion section 321 can increase the range of resin particles and plastic additive particles sprayed from the discharge section 32, reduce their concentration, and further increase the mixing uniformity of resin particles and plastic additive particles.

[0048] In one embodiment, the transfer storage tank includes an outer tank body 21 and an inner tank body 22 disposed within the outer tank body 21. The outer tank body 21 is connected to the feeding section 31 via a first connection port 311. An installation platform 23 is rotatably disposed within the outer tank body 21. The inner tank body 22 is mounted on the installation platform 23, and a weighing sensor 24 is disposed between the inner tank body 22 and the installation platform 23. The inner tank body 22 is mounted on the installation platform 23 via the weighing sensor 24. The inner tank body 22 is installed by mounting it onto the weighing sensor 24, which is fixedly mounted on the installation platform 23. The fixing structure can be a bolt-fixed structure.

[0049] In this embodiment, the transfer process of resin particles and plastic additive particles in the transfer storage tank is as follows: First, the inner tank 22 receives the resin particles or plastic additive particles. After the resin particles or plastic additive particles in the inner tank 22 reach a preset amount, they are then poured into the outer tank 21. The preset amount of resin particles and plastic additive particles is the weight required for one mixing process. This required weight is set according to the formulation ratio of the ingredients. The criterion for determining whether the resin particles or plastic additive particles in the inner tank 22 have reached the preset amount is whether the weight of the inner tank 22 measured by the weighing sensor 24 reaches the preset value.

[0050] As can be seen, the present invention can mix resin particles and plastic additive particles in stages, and control the amount of resin particles and plastic additive particles entering the outer tank 21 during each mixing process, so that they are configured according to the ingredient ratio. This ensures that after each mixing, the material obtained from the resin particles and plastic additive particles in the outer tank 21 is a dry mix that is strictly mixed according to the predetermined ratio and can be used for the next molding operation. Compared with continuous mixing, this can further improve the mixing uniformity of resin particles and plastic additive particles. Preferably, during each mixing process of resin particles and plastic additive particles, the blower 4 simultaneously conveys all resin particles or plastic additive particles in the outer tank 21, and simultaneously conveys all vertical particles or plastic additive particles in the outer tank 21.

[0051] One embodiment further includes a feeding mechanism, which includes a feeding tank 5 and a feeding pipe disposed on the frame, the feeding pipe being used to connect the feeding tank 5 and the inner tank 22.

[0052] In this embodiment, the feeding tank 5 is used to store resin particles and plastic additive particles, and the feeding pipe is used to transport the resin particles and plastic additive particles stored in the feeding tank 5 to the inner tank 22.

[0053] In one embodiment, the feeding pipe includes a pipe body 61 mounted on the frame. One end of the pipe body 61 extends above the inner tank 22, forming a feeding port. A second connection port 611 is also provided on the side wall of the end of the pipe body 61 away from the feeding port, and the second connection port 611 is connected to the feeding tank 5. A spiral rod is provided inside the pipe body 61. The spiral rod includes a rod body 621 and a spiral body 622 mounted on the rod body 621. The spiral body 622 is located inside the pipe body 61, and both ends of the rod body 621 extend out of the pipe body 61. Two mounting seats 7 are provided on the frame corresponding to the portions of the rod body 621 extending out of the pipe body 61. The two mounting seats 7 are located on both sides of the pipe body 61, and the portions of the rod body 621 extending out of the pipe body 61 are respectively connected to the inner tank 22. The two mounting bases 7 are rotatably connected; a driving device is also provided on the frame corresponding to the rod 621, and the driving device is driven to drive the rod 621 to rotate through the portion of the rod 621 extending out of the tube 61; the rod 621 includes an outer tube 6211 with one end open away from the feeding port and an inner tube 6212 with both ends open inside the outer tube 6211. One end of the inner tube 6212 is located at the opening of the outer tube 6211 and is flush with the opening of the outer tube 6211. There is a communication gap 6215 between the other end of the inner tube 6212 and the bottom of the outer tube 6211. A water inlet channel 6214 is formed between the outer tube 6211 and the inner tube 6212. The water inlet channel 6214 communicates with the internal space of the inner tube 6212 through the communication gap 6215. The inner pipe 6212 is connected to the outer pipe 6211 via a connecting rod 6213 located in the water inlet channel 6214.

[0054] In this embodiment, the resin particles or plastic additive particles in the feeding tank 5 will flow into the pipe 61 connected to it through the second connection port 611 under the action of gravity. At this time, by rotating the rod 621, the spiral 622 on the rod 621 can transport the resin particles or plastic additive particles in the pipe 61, thereby transporting them to the inner tank 22.

[0055] The end of the rod 621 furthest from the feeding port is connected to the heat exchange water supply system via a dual-channel rotary joint 8. Specifically, hot water enters the rod 621 through the inlet channel 6214, then enters the inner space of the inner tube 6212 through the connecting gap 6215, and then leaves the rod 621. During this process, the heat of the hot water is exchanged with the rod 621 and the spiral 622 on the rod 621. Therefore, the feeding pipe of the present invention can heat the resin particles and plastic additive particles during the conveying process, so that the moisture on the resin particles and plastic additive particles can be quickly evaporated after leaving the discharge section 32, thereby drying the resin particles and plastic additive particles. This can improve the accuracy of the weighing structure of the weighing sensor 24 and improve the quality of the mixed dry material, thereby improving the quality of the produced plastic.

[0056] In addition, the present invention uses a rod 621 and a spiral 622 to heat resin particles and plastic additive particles. The surfaces of the rod 621 and the spiral 622 are both effective heating areas, that is, the present invention can effectively increase the heating area, thereby effectively improving the heating effect.

[0057] The present invention also provides a batching method for an automatic raw material batching system, characterized by comprising the following steps:

[0058] S1. Add the resin granules to be mixed and the plastic additive granules to the corresponding feeding tanks 5 respectively.

[0059] S2, resin particles and various plastic additive particles enter the corresponding inner tank 22 along the feeding pipe. At the same time, the weighing sensor 24 detects the weight of the corresponding inner tank 22 in real time.

[0060] S3. After the weight of the inner tank 22 reaches the preset value, stop the corresponding feeding pipe from conveying resin particles or plastic additive particles. After all the inner tanks 22 have reached the preset value, flip the inner tank 22 and pour the resin particles or plastic additive particles in the inner tank 22 into the outer tank 21 where it is located. Then the inner tank 22 is reset and continues to receive the resin particles or plastic additive particles conveyed by the feeding pipe. The blower 4 is used to convey all the resin particles and plastic additive particles in the outer tank 21 to the mixing tank 1. At this time, one mixing operation is completed. Repeat this process to continuously mix the resin particles and plastic additive particles in the feeding tank 5.

[0061] When the weight of the inner tank 22 reaches the preset value, it means that the weight of the resin particles or plastic additive particles contained in the inner tank 22 has reached the preset value. The preset weight of the resin particles and plastic additive particles is the weight required in one mixing process, and the required weight is set according to the formula ratio of the ingredients.

[0062] In one embodiment, in step S3, the blower 4 connected to the outer tank 21 simultaneously conveys the resin particles or plastic additive particles in all the outer tanks 21, and simultaneously conveys all the vertical particles or plastic additive particles in all the outer tanks 21.

[0063] In this embodiment, during each mixing process of resin particles and plastic additive particles, the blower 4 simultaneously conveys the resin particles or plastic additive particles in all outer tanks 21, and simultaneously conveys all vertical particles or plastic additive particles in all outer tanks 21. That is, during the spraying process of the discharge section 32, all resin particles and plastic additive particles are mixed at every moment, which can effectively ensure the uniformity of mixing of resin particles and plastic additive particles.

[0064] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An automatic raw material batching system, characterized in that, The system includes a frame, on which a mixing tank and several intermediate storage tanks connected to the mixing tank via feeding channels are mounted. Each feeding channel includes an inlet section and an outlet section at both ends. The inlet section's port is connected to a blower mounted on the frame, and a first connection port is provided on the inlet section, connecting to a corresponding intermediate storage tank. The outlet section is located inside the mixing tank, is a straight channel, and its port faces the centerline of the mixing tank. The extensions of the centerlines of all outlet sections within the mixing tank intersect at a single point, forming an intersection point located on the centerline of the mixing tank. The mixing tank is inclined downwards; a partition plate is also provided inside the mixing tank, which is located below the discharge section and divides the mixing tank into a collection space and a storage space. The partition plate is funnel-shaped with a concave center and has a window at its bottom. The discharge section gradually expands towards the confluence point to form an expansion section. The transfer storage tank includes an outer tank and an inner tank disposed inside the outer tank. The outer tank is connected to the feed section through a first connection port. An installation platform is rotatably disposed inside the outer tank. The inner tank is installed on the installation platform, and a weighing sensor is provided between the inner tank and the installation platform. The inner tank is installed on the installation platform through the weighing sensor.

2. The automatic raw material batching system according to claim 1, characterized in that, The bottom of the mixing tank is equipped with a discharge pipe, and a valve is installed on the discharge pipe.

3. The automatic raw material batching system according to claim 1, characterized in that, It also includes a feeding mechanism, which includes a feeding tank and a feeding pipe mounted on the frame, the feeding pipe being used to connect the feeding tank and the inner tank.

4. The automatic raw material batching system according to claim 3, characterized in that, The feeding pipe includes a pipe body mounted on the frame. One end of the pipe body extends above the inner tank, forming a feeding port. A second connection port is also provided on the side wall of the end of the pipe body away from the feeding port, and the second connection port is connected to the feeding tank. A spiral rod is provided inside the pipe body. The spiral rod includes a rod body and a spiral body mounted on the rod body. The spiral body is located inside the pipe body, and both ends of the rod body extend out of the pipe body. Two mounting seats are provided on the frame corresponding to the portions of the rod body extending out of the pipe body. The two mounting seats are located on both sides of the pipe body. The tube body is rotatably connected to the two mounting seats respectively; a driving device is also provided on the frame corresponding to the rod body, and the driving device is driven to drive the rod body to rotate; the rod body includes an outer tube with one end open away from the feeding port and an inner tube with both ends open inside the outer tube. One end of the inner tube is located at the opening of the outer tube and is flush with the opening of the outer tube. There is a communication gap between the other end of the inner tube and the bottom of the outer tube. A water inlet channel is formed between the outer tube and the inner tube. The water inlet channel communicates with the internal space of the inner tube through the communication gap.

5. The batching method of the automatic raw material batching system as described in claim 4, characterized in that, Includes the following steps: S1. Add the resin granules and plastic additive granules to be mixed into the corresponding feeding tanks respectively. S2, resin granules and various plastic additive granules enter the corresponding inner tank along the feeding pipe, and at the same time, the weighing sensor detects the weight of the corresponding inner tank in real time. S3. Once the weight of the inner tank reaches the preset value, stop the corresponding feeding pipe from conveying resin particles or plastic additive particles. After all the inner tanks have reached the preset value, flip the inner tanks and pour the resin particles or plastic additive particles inside into the outer tanks. Then, the inner tanks are reset and continue to receive resin particles or plastic additive particles from the feeding pipes. A blower is used to convey all the resin particles and plastic additive particles in the outer tanks to the mixing tank. At this point, one mixing operation is completed. Repeat this process to continuously mix the resin particles and plastic additive particles in the feeding tanks.

6. The batching method of an automatic raw material batching system according to claim 5, characterized in that, In step S3, the blower connected to the outer tank simultaneously conveys the resin particles or plastic additive particles in all the outer tanks, and simultaneously conveys all the resin particles or plastic additive particles in all the outer tanks.

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