Automatic metering and feeding equipment for plastic particles

Abstract

The utility model relates to the technical field of plastic particle feeding, in particular to plastic particle automatic metering and feeding equipment which comprises a bottom plate, a supporting frame is arranged at the rear end of the upper side wall of the bottom plate, a supporting plate is arranged at the front end of the supporting frame, and multiple sets of storage barrels are arranged on the upper side wall of the supporting plate. A connecting pipe with an electronic valve is arranged on the bottom wall of the storage barrel, an adjusting device is arranged on the upper side wall of the bottom plate, a feeding barrel is arranged at one end of the adjusting device, a mixing device is arranged in the feeding barrel, a weighing system is arranged on the bottom wall of the feeding barrel, and a feeding pipe with a suction pump is arranged at the lower end of the side wall of the feeding barrel. The electronic valve comprises a control motor, a rotating rod and a connecting plate, the adjusting device comprises an adjusting box, an adjusting rod, a sliding block and a second motor, the mixing device comprises a mixing rod and a stirring blade, and vibrators are arranged on the storage barrels, so that it is ensured that the discharging flow errors of different raw materials are small; the fine proportioning requirements of various raw materials in a complex formula are met.

Description

Technical Field

[0001] This utility model relates to the field of plastic granule feeding technology, specifically to an automatic metering and feeding device for plastic granules. Background Technology

[0002] As is well known, in the processing of existing plastic granules, the accuracy, efficiency and reliability of automatic metering and feeding equipment directly affect production quality and cost control. Traditional equipment generally adopts manual feeding or semi-automatic mechanical structures, which have significant technical defects.

[0003] Specifically, existing feeding equipment relies on manual weighing or simple mechanical valves to control the feeding when in use. This is easily affected by factors such as differences in particle flowability and human factors, resulting in serious single-time measurement errors. It is difficult to meet the requirements of high-precision injection molding processes. At the same time, the lack of an integrated control system makes it difficult to achieve continuous production, especially in scenarios with multiple raw material ratios where efficiency is low. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic metering and feeding device for plastic granules.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic metering and feeding device for plastic granules, comprising a base plate, a support frame provided at the rear end of the side wall of the base plate, a support plate provided at the front end of the support frame, multiple storage tanks provided on the side wall of the support plate, a connecting pipe with an electronic valve provided on the bottom wall of each storage tank, an adjusting device provided on the side wall of the base plate, a feeding tank provided at one end of the adjusting device, a mixing device provided inside the feeding tank, a weighing system provided on the bottom wall of the feeding tank, a feeding pipe with a pump provided at the lower end of the side wall of the feeding tank, and a control panel for each storage tank and the feeding tank.

[0008] To achieve millimeter-level adjustment of plastic granule flow rate, this utility model improves upon the following: the electronic valve includes a control motor, a rotating rod, and a connecting plate; the rotating rod passes through the connecting pipe; the control motor is located on one side of the connecting pipe; one end of the rotating rod is connected to the output end of the control motor; and the connecting plate passes through the rotating rod and is adapted to the connecting pipe.

[0009] To adapt to different feed inlet positions and eliminate the need for manual handling, this utility model improves upon the following: the adjustment device includes an adjustment box, an adjustment rod, a slider, and a second motor. The adjustment box is located on the base plate, the adjustment rod passes through the adjustment box, the slider is on the adjustment rod and threadedly connected to it, the second motor is located on one side of the adjustment box, one end of the adjustment rod is connected to the output end of the second motor, the front side wall of the adjustment box is provided with an adjustment hole, the front side wall of the slider is provided with a fixing frame, the fixing frame passes through the adjustment hole and is slidably connected to it, and the feeding hopper is on the fixing frame.

[0010] To avoid particle adhesion and residue, the present invention is improved as follows: the mixing device includes a mixing rod and a stirring blade, the mixing rod penetrates the bottom wall of the feeding barrel, the stirring blade is around the mixing rod, a third motor is provided on the bottom wall of the feeding barrel, and the mixing rod is connected to the output end of the third motor.

[0011] In order to break the arched accumulation of particles caused by static electricity or humidity, the present invention is improved by: each of the storage tanks is equipped with a vibrator.

[0012] In order to intercept foreign objects such as fibers and metal shavings in the raw materials, the present invention is improved by providing a detachable screen on the upper side wall of the feeding hopper.

[0013] To remotely view parameters such as weighing data, valve opening, and motor load, this utility model improves upon the following: the control panel supports remote monitoring of the equipment's operating status via a 4G / 5G network.

[0014] To ensure the stability of the production line, the present invention is improved by providing a placement rack on the bottom wall of the base plate, and providing anti-slip silicone on the bottom wall of the placement rack.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides an automatic metering and feeding device for plastic granules, which has the following beneficial effects:

[0017] This automatic metering and feeding equipment for plastic granules features multiple storage tanks mounted on a support plate. Each tank has an independent electronic valve and connecting pipe at its bottom, enabling simultaneous storage and separate control of various plastic granule raw materials. The electronic valves are driven by a motor to rotate a rod connected to the connecting plate, precisely adjusting the valve opening by rotating the angle to ensure minimal error in the feed flow of different raw materials. This meets the precise proportioning requirements of multiple raw materials in complex formulations.

[0018] The adjustment device adopts a combination structure of adjustment box, adjustment rod, slider, and second motor. When the second motor drives the adjustment rod to rotate, the slider moves axially along the adjustment rod through threaded transmission, causing the feeding bucket on the fixed frame to slide horizontally under the limit of the adjustment hole. This allows for rapid positioning of the feeding bucket without the need for manual handling or mechanical disassembly, significantly reducing equipment changeover time.

[0019] Meanwhile, the weighing system at the bottom of the feeding hopper monitors the weight of the material in real time, and a detachable screen is installed on the upper side wall of the feeding hopper, which can effectively intercept foreign objects or clumps in the plastic granules. Attached Figure Description

[0020] Figure 1 This is a first-view schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a second-view schematic diagram of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal cross-section of the feeding hopper of this utility model.

[0023] Figure 4 This is an exploded view of the electronic valve structure of this utility model.

[0024] In the diagram: 1. Base plate; 2. Second motor; 3. Feeding pipe; 4. Pump; 5. Storage tank; 6. Vibrator; 7. Control panel; 8. Connecting pipe; 9. Support plate; 10. Support frame; 11. Adjusting box; 12. Third motor; 13. Feeding hopper; 14. Screen; 15. Adjusting rod; 16. Sliding block; 17. Control motor; 18. Rotating rod; 19. Connecting plate; 20. Fixing frame; 21. Mixing rod; 22. Stirring blade; 23. Placement rack. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figure 1-4 An automatic metering and feeding device for plastic granules includes a base plate 1. A support frame 10 is provided at the rear end of the upper side wall of the base plate 1, and a support plate 9 is provided at the front end of the support frame 10. Multiple storage tanks 5 are provided on the upper side wall of the support plate 9. A connecting pipe 8 with an electronic valve is provided on the bottom wall of each storage tank 5. An adjusting device is provided on the upper side wall of the base plate 1. A feeding tank 13 is provided at one end of the adjusting device. A mixing device is provided inside the feeding tank 13. A weighing system is provided on the bottom wall of the feeding tank 13. A feeding pipe 3 with a pump 4 is provided at the lower end of the side wall of the feeding tank 13. Each storage tank 5 and the feeding tank 13 is provided with a separately controlled control panel 7. The adjusting device includes an adjustment... The system comprises a section box 11, an adjusting rod 15, a slider 16, and a second motor 2. The adjusting box 11 is located on the base plate 1. The adjusting rod 15 passes through the adjusting box 11. The slider 16 is on the adjusting rod 15 and threadedly connected to it. The second motor 2 is located on one side of the adjusting box 11. One end of the adjusting rod 15 is connected to the output end of the second motor 2. The adjusting box 11 has an adjusting hole on its front side wall. The slider 16 has a fixing frame 20 on its front side wall. The fixing frame 20 passes through the adjusting hole and is slidably connected to it. The feeding hopper 13 is located on the fixing frame 20. The upper side wall of the feeding hopper 13 has a detachable screen 14. Each storage hopper 5 is equipped with a vibrator 6.

[0029] During operation, the operator inputs the proportions of each raw material (e.g., 2000g of raw material A and 1500g of raw material B) through the independent control panel 7 of the storage tank 5 and the feeding tank 13. Then, the second motor 2 starts, driving the adjusting rod 15 to rotate. Under the limit of the adjusting box 11, the adjusting rod 15 drives the slider 16 to move axially along the adjusting rod 15, causing the feeding tank 13 on the fixed frame 20 to slide horizontally to directly below the first target storage tank 5 (e.g., tank A). The control motor 17 calculates the valve opening based on the preset amount (e.g., 2000g) and drives the rotating rod 18 to rotate the connecting plate 19 to a specific angle (e.g., 30% opening). This allows the plastic granules in tank A to flow into the feeding tank 13 through the connecting pipe 8. The material passes through the screen 14 into the feeding tank 13, filtering out foreign objects or clumps in the raw materials. Simultaneously, the weighing system monitors the weight of the material in the feeding tank 13 in real time. When the weight reaches 95% of the target value, the control motor 17 automatically reduces the valve opening. When the valve opening reaches 5%, it enters the micro-compensation stage; when it reaches 100%, the valve is completely closed with an error ≤0.3%. At this time, the second motor 2 drives the adjusting rod 15 again, and moves the feeding bucket 13 to the next storage bucket 5 (such as bucket B) according to the above operation. The above feeding process is repeated. If the raw materials need to be added in sequence (such as color masterbatch being added last), the system automatically adjusts the moving priority. During the feeding process, the vibrator 6 on the outer wall of the storage bucket 5 vibrates intermittently at a frequency of 20Hz (0.5 seconds each time) to prevent particles from bridging and blocking due to static electricity or humidity, and to ensure the continuity of feeding. After all raw materials are metered, the mixing device can perform forced shearing and diffusion mixing of the materials. Finally, the outlet of the feeding pipe 3 (part of the feeding pipe 3 is made of flexible material, which is convenient to adjust according to the inlet position of different equipment) is inserted into the feed port of the injection molding machine or extruder. The pump 4 is started to extract the mixture and transport it to the downstream equipment. The flow rate is automatically adjusted according to the process requirements.

[0030] In practical applications, millimeter-level adjustment of the plastic granule flow rate is required. To meet this requirement, in this embodiment, the electronic valve includes a control motor 17, a rotating rod 18, and a connecting plate 19. The rotating rod 18 passes through the connecting pipe 8, the control motor 17 is located on one side of the connecting pipe 8, one end of the rotating rod 18 is connected to the output end of the control motor 17, and the connecting plate 19 passes through the rotating rod 18 and is adapted to the connecting pipe 8.

[0031] The control motor 17 starts, driving the rotating rod 18 to rotate, and the connecting plate 19 rotates accordingly, making it convenient to adjust the opening angle for feeding.

[0032] In practical use, it is necessary to prevent sedimentation and solve the problem of stratification and clumping in traditional equipment. To meet the above requirements, in this embodiment, the mixing device includes a mixing rod 21 and a stirring blade 22. The mixing rod 21 penetrates the bottom wall of the feeding tank 13, and the stirring blade 22 surrounds the mixing rod 21. A third motor 12 is provided on the bottom wall of the feeding tank 13, and the mixing rod 21 is connected to the output end of the third motor 12.

[0033] Start the third motor 12. The output of the third motor 12 drives the mixing rod 21 to rotate, which in turn drives the stirring blade 22 to rotate, thus scraping off the adhering particles in real time.

[0034] In practical use, it is necessary to be able to remotely view parameters such as weighing data, valve opening, and motor load. In order to meet the above requirements, in this embodiment, the control panel 7 supports remote monitoring of the device's operating status via 4G / 5G network.

[0035] In actual use, the device needs to be placed stably. To meet the above requirements, in this embodiment, the bottom wall of the base plate 1 is provided with a placement rack 23, and the bottom wall of the placement rack 23 is provided with anti-slip silicone.

[0036] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic metering and feeding device for plastic granules, comprising a base plate (1), characterized in that: A support frame (10) is provided at the rear end of the upper side wall of the base plate (1), and a support plate (9) is provided at the front end of the support frame (10). Multiple storage tanks (5) are provided on the upper side wall of the support plate (9). A connecting pipe (8) with an electronic valve is provided on the bottom wall of the storage tank (5). An adjustment device is provided on the upper side wall of the base plate (1). A feeding tank (13) is provided at one end of the adjustment device. A mixing device is provided inside the feeding tank (13). A weighing system is provided on the bottom wall of the feeding tank (13). A feeding pipe (3) with a pump (4) is provided at the lower end of the side wall of the feeding tank (13). A control panel (7) with separate control is provided on both the storage tank (5) and the feeding tank (13).

2. The automatic metering and feeding equipment for plastic granules according to claim 1, characterized in that: The electronic valve includes a control motor (17), a rotating rod (18), and a connecting plate (19). The rotating rod (18) passes through the connecting pipe (8). The control motor (17) is located on one side of the connecting pipe (8). One end of the rotating rod (18) is connected to the output end of the control motor (17). The connecting plate (19) passes through the rotating rod (18) and is adapted to the connecting pipe (8).

3. The automatic metering and feeding equipment for plastic granules according to claim 2, characterized in that: The adjustment device includes an adjustment box (11), an adjustment rod (15), a slider (16), and a second motor (2). The adjustment box (11) is on the base plate (1). The adjustment rod (15) passes through the adjustment box (11). The slider (16) is on the adjustment rod (15) and threadedly connected to it. The second motor (2) is on one side of the adjustment box (11). One end of the adjustment rod (15) is connected to the output end of the second motor (2). An adjustment hole is provided on the front side wall of the adjustment box (11). A fixing frame (20) is provided on the front side wall of the slider (16). The fixing frame (20) passes through the adjustment hole and is slidably connected to it. The feeding hopper (13) is on the fixing frame (20).

4. The automatic metering and feeding equipment for plastic granules according to claim 3, characterized in that: The mixing device includes a mixing rod (21) and a stirring blade (22). The mixing rod (21) penetrates the bottom wall of the feeding barrel (13). The stirring blade (22) is located around the mixing rod (21). A third motor (12) is provided on the bottom wall of the feeding barrel (13). The mixing rod (21) is connected to the output end of the third motor (12).

5. The automatic metering and feeding equipment for plastic granules according to claim 4, characterized in that: Each of the storage tanks (5) is equipped with a vibrator (6).

6. The automatic metering and feeding equipment for plastic granules according to claim 5, characterized in that: The upper side wall of the feeding hopper (13) is provided with a detachable screen (14).

7. The automatic metering and feeding equipment for plastic granules according to claim 6, characterized in that: The control panel (7) supports remote monitoring of the device's operating status via 4G / 5G network.

8. The automatic metering and feeding equipment for plastic granules according to claim 7, characterized in that: The bottom wall of the base plate (1) is provided with a placement rack (23), and the bottom wall of the placement rack (23) is provided with anti-slip silicone.

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