Injection molding raw material feeding system

Abstract

The utility model relates to the technical field of injection molding machines, and particularly discloses an injection molding raw material feeding system which comprises a supporting frame and a quantitative storage bin arranged on the outer wall of the supporting frame in a sliding and sleeving mode, a plurality of independent feeding bins are evenly distributed on the circumference of the top of the quantitative storage bin, and the bottoms of all the feeding bins are connected with a feeding barrel through discharging pipes. The open end of the feeding cylinder communicates with a feeding cylinder, the top of the quantitative storage bin communicates with a plurality of material guiding cylinders, and the outer wall of the lower end of the feeding cylinder is sleeved with the material guiding cylinders. A baffle used for opening and closing the open end of the feeding barrel is arranged in the feeding barrel, and an electric telescopic rod used for driving the baffle to move is arranged on the outer wall of the feeding barrel. Gravity sensors which are uniformly distributed on the circumference are arranged on the support frame and are fixedly connected with the quantitative storage bin through a connecting frame; and through precise quantitative feeding, intelligent anti-blocking homogenization and high-stability structural design, automatic and efficient matching of multiple raw materials is achieved, and the injection molding production quality and efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and specifically discloses an injection molding raw material feeding system. Background Technology

[0002] In the field of injection molding production, automated raw material supply is a key link in ensuring production efficiency and product quality.

[0003] While some automated feeding equipment exists in the existing technology, such as the injection molding raw material feeding device proposed in published patent CN213947243U, which achieves automated conveying of plastic granules through lifting mechanisms and transmission belts, reducing manual intervention to some extent, such equipment still has the following limitations: First, it can only convey one type of raw material, failing to meet the needs of conveying multiple raw materials, and the feeding process lacks precise weight or volume feedback control, making it difficult to meet the requirements of high-precision mixing processes; second, the system does not integrate anti-clogging stirring functions, and the raw materials may still clump in the storage bin due to accumulation or moisture, affecting the stability of the feeding; third, switching between multiple raw materials requires manual adjustment of equipment parameters, resulting in insufficient automation and difficulty in adapting to the requirements of modern injection molding production for flexible proportioning and rapid switching of multiple raw materials.

[0004] Therefore, there is an urgent need for a new type of injection molding raw material supply system that can break through the bottlenecks of existing technologies and achieve precise quantitative supply, efficient mixing and automated management of raw materials through intelligent control, multi-compartment alternating supply and anti-clogging homogenization design, thereby improving the overall efficiency and product quality of injection molding production. Utility Model Content

[0005] This utility model proposes an injection molding raw material supply system. This injection molding raw material supply system can realize alternating quantitative feeding of multiple feeding hoppers to ensure accurate and stable feeding. It can make the material uniform through stirring, automatically feed to improve efficiency, and promptly alarm to avoid insufficient material affecting production. It also has a stable material conveying structure and can exhaust air and prevent foreign matter from entering.

[0006] This invention is implemented as follows: an injection molding raw material feeding system includes a support frame and a quantitative storage silo slidably fitted on the outer wall of the support frame. Multiple independent feeding silos are evenly distributed around the top circumference of the quantitative storage silo. The bottom of all feeding silos is connected to a feeding cylinder via a discharge pipe. The open end of the feeding cylinder is connected to a feed cylinder. Multiple guide cylinders are connected to the top of the quantitative storage silo, and the guide cylinders are fitted onto the outer wall of the lower end of the feed cylinder. A baffle for opening and closing the open end of the feeding cylinder is provided inside the feed cylinder. An electric telescopic rod for driving the baffle is provided on the outer wall of the feed cylinder. Gravity sensors are evenly distributed around the circumference of the support frame. The gravity sensors are fixedly connected to the quantitative storage silo via a connecting frame. A controller electrically connected to the gravity sensors and the electric telescopic rod is provided on the support frame. The controller controls the opening and closing of the electric telescopic rod based on the detection value of the gravity sensors, realizing alternating quantitative feeding from multiple feeding silos.

[0007] As a preferred embodiment of the injection molding raw material supply system of this utility model, the quantitative storage silo is provided with a stirring shaft, the stirring shaft is provided with spiral stirring blades that are in clearance fit with the inner wall of the silo, and the top of the quantitative storage silo is provided with a first motor that drives the stirring shaft.

[0008] As a preferred embodiment of the injection molding raw material supply system of this utility model, it further includes a material conveying blower, a suction pipe connected to the input end of the blower, and a multi-way pipe provided at the output end of the blower. The branch pipes of the multi-way pipe are connected to the top of each feeding hopper, and each branch pipe is provided with a control valve. The material conveying blower and the control valve are both electrically connected to the controller.

[0009] As a preferred embodiment of the injection molding raw material supply system of this utility model, a conical hopper is provided below the support frame, and the end of the suction pipe is connected to the bottom of the hopper.

[0010] As a preferred embodiment of the injection molding raw material supply system of this utility model, the feeding cylinder is provided with a coaxially arranged auger, and a second motor for driving the auger is provided on the side of the feeding cylinder away from the open end.

[0011] As a preferred embodiment of the injection molding raw material supply system of this utility model, all the inner walls of the top of the feeding hopper are equipped with distance sensors and alarms. The distance sensors and alarms are electrically connected to the controller, and the alarm is triggered when the material height is lower than a preset threshold.

[0012] As a preferred embodiment of the injection molding raw material supply system of this utility model, the top of the feeding hopper is provided with an exhaust vent, and the exhaust vent is embedded with a filter screen.

[0013] The beneficial effects of this utility model are:

[0014] 1. Through closed-loop feedback between gravity sensor and controller, multiple raw materials can be added precisely and alternately as needed, avoiding human error; the dual function of spiral stirring blades and auger ensures the flowability of raw materials, prevents clumping and bridging, and facilitates uniform mixing of raw materials, thus improving the quality of injection molded products.

[0015] 2. By using material conveying fans, multi-channel pipelines, and automatic alarm systems, manual intervention is reduced and material feeding efficiency is improved. At the same time, the sealing structure of the guide cylinder and the feed cylinder prevents raw material leakage. The sliding fit design of the support frame and the quantitative storage bin reduces mechanical vibration interference. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 for Figure 1 A schematic diagram of the AA-direction structure.

[0019] Figure 3 This is a cross-sectional view of the feeding cylinder and the feed cylinder of this utility model.

[0020] Figure 4 This is a cross-sectional view of the exhaust port and filter screen of this utility model.

[0021] The markings in the diagram are: 1. Support frame; 2. Quantitative storage silo; 3. Feeding silo; 4. Feeding cylinder; 5. Feeding cylinder; 6. Guide cylinder; 7. Baffle; 8. Electric telescopic rod; 9. Gravity sensor; 10. Connecting frame; 11. Controller; 12. Stirring shaft; 13. Spiral stirring blades; 14. First motor; 15. Material conveying fan; 16. Suction pipe; 17. Multi-port pipe; 18. Control valve; 19. Conical hopper; 20. Screwdriver; 21. Second motor; 22. Distance sensor; 23. Alarm; 24. Exhaust vent; 25. Filter screen. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-4A raw material feeding system for injection molding includes a support frame 1 and a quantitative storage bin 2 slidably sleeved on the outer wall of the support frame 1. Multiple independent feeding bins 3 are evenly distributed around the top circumference of the quantitative storage bin 2. The bottom of all feeding bins 3 is connected to a feeding cylinder 4 via a discharge pipe. The open end of the feeding cylinder 4 is connected to a feed cylinder 5. Multiple guide cylinders 6 are connected to the top of the quantitative storage bin 2 and are sleeved on the outer wall of the lower end of the feed cylinder 5. A baffle 7 for opening and closing the open end of the feeding cylinder 4 is provided inside the feed cylinder 5. An electric telescopic rod 8 for driving the baffle 7 to move is provided on the outer wall of the feed cylinder 5. Gravity sensors 9 are evenly distributed around the circumference of the support frame 1. The gravity sensors 9 are fixedly connected to the quantitative storage bin 2 via a connecting frame 10. A controller 11 is electrically connected to the gravity sensors 9 and the electric telescopic rod 8 on the support frame 1. The controller 11 controls the opening and closing of the electric telescopic rod 8 according to the detection value of the gravity sensors 9, realizing alternating quantitative feeding of multiple feeding bins 3.

[0024] In this embodiment: external raw materials are temporarily stored in each feeding hopper 3 via material conveying fan 15 and suction pipe 16 through multi-channel pipe 17; when the controller 11 detects that the weight of the raw materials in the quantitative storage hopper 2 is lower than the threshold, it activates the electric telescopic rod 8 on the corresponding feeding hopper 3, driving the baffle 7 to open the open end of the feeding cylinder 4, and the raw materials flow into the quantitative storage hopper 2 through the feeding cylinder 5 and the guide cylinder 6; the gravity sensor 9 monitors the weight change of the quantitative storage hopper 2 in real time, and the controller 11 switches the opening and closing of different feeding hoppers 3 according to the preset program to realize the alternating supply of multiple raw materials; the stirring shaft 12 and the spiral stirring blades 13 continuously stir the raw materials in the quantitative storage hopper 2, which facilitates the initial mixing of the raw materials and prevents agglomeration and blockage; the gravity sensor 9 transmits the weight signal to the controller 11, triggering the electric telescopic rod 8 to move; the distance sensor 22 monitors the raw material storage in the feeding hopper 3 in real time, and triggers the alarm 23 to prompt replenishment when the material level is low; the controller 11 synchronously controls the material conveying fan 15 and the branch pipe control valve 18 to realize automatic replenishment of raw materials.

[0025] As a technical optimization of this utility model, a stirring shaft 12 is provided inside the quantitative storage bin 2, and a spiral stirring blade 13 is provided on the stirring shaft 12 that is in clearance fit with the inner wall of the bin. A first motor 14 for driving the stirring shaft 12 is provided on the top of the quantitative storage bin 2.

[0026] In this embodiment: the first motor 14 drives the stirring shaft 12 to rotate, and the stirring shaft 12 drives the spiral stirring blades 13 to stir the material, making it easy to mix the material in the quantitative storage bin 2 evenly.

[0027] As a technical optimization of this utility model, it also includes a material conveying fan 15, a suction pipe 16 connected to the input end of the fan, and a multi-way pipe 17 located at the output end of the fan. The branch pipes of the multi-way pipe 17 are connected to the top of each feeding hopper 3, and each branch pipe is equipped with a control valve 18. The material conveying fan 15 and the control valve 18 are both electrically connected to the controller 11.

[0028] In this embodiment: the suction pipe 16 connects the conical hopper 19 and the material conveying fan 15. The material conveying fan 15 is started to provide power and transport the material from the conical hopper 19 to the feeding bin 3 through the suction pipe 16. The material output by the material conveying fan 15 is distributed to each feeding bin 3 through the multi-channel pipe 17.

[0029] As a technical optimization of this utility model, a conical hopper 19 is provided below the support frame 1, and the end of the suction pipe 16 is connected to the bottom of the hopper.

[0030] In this embodiment: the conical hopper 19 stores the material, which is convenient for the suction pipe 16 to pick up.

[0031] As a technical optimization of this utility model, the feeding cylinder 4 is provided with a coaxially arranged auger 20, and a second motor 21 for driving the auger 20 is provided on the side of the feeding cylinder 4 away from the open end.

[0032] In this embodiment: the second motor 21 is started to drive the auger 20 to rotate. The auger 20 rotates inside the feed cylinder 4 to transport the material from one end to the other end.

[0033] As a technical optimization of this utility model, all feeding hoppers 3 are equipped with distance sensors 22 and alarms 23 on the top inner wall. Both distance sensors 22 and alarms 23 are electrically connected to the controller 11. When the material height is lower than the preset threshold, an alarm is triggered.

[0034] In this embodiment: the distance sensor 22 detects the material height in the feeding hopper 3 and transmits the signal to the controller 11. The alarm 23 sounds an alarm when the material height is lower than a preset threshold.

[0035] As a technical optimization of this utility model, the top of the feeding hopper 3 is provided with an exhaust port 24, and a filter screen 25 is embedded in the exhaust port 24.

[0036] In this embodiment: the exhaust vent 24 discharges the air from the feeding hopper 3, and the filter screen 25 filters the debris in the exhaust air, which not only prevents the air pressure in the feeding hopper 3 from accumulating, but also prevents external pollutants from entering.

[0037] Working principle and usage process of this utility model:

[0038] The material is placed in the conical hopper 19 below the support frame 1. The material conveying fan 15 is turned on, and the material in the conical hopper 19 is sucked in through the suction pipe 16. Through the multi-port pipe 17 at the output end of the material conveying fan 15, according to the instructions of the controller 11, the material is conveyed to multiple independent feeding bins 3 for storage through the control valves 18 on each branch pipe. The exhaust port 24 and filter screen 25 at the top of the feeding bin 3 can discharge the air in the bin and prevent foreign objects from entering. The material in the feeding bin 3 enters the feeding cylinder 4 through the discharge pipe. At this time, the electric telescopic rod 8 is in the initial state, and the drive baffle 7 closes the open end of the feeding cylinder 4. The material accumulates in the feeding cylinder 4 under the action of gravity. The auger 20 in the feeding cylinder 4 is driven to rotate by the second motor 21, which conveys the material in the feeding cylinder 4 towards the feed cylinder 5. When the weight of the material in the quantitative storage bin 2 does not reach the set value of the gravity sensor 9, the controller 11 controls the electric telescopic rod 8 to move, so that the baffle 7 opens the open end of the feeding cylinder 4, and the material enters the quantitative storage bin 2 through the feed cylinder 5 and the guide cylinder 6. During this process, gravity sensor 9 detects the weight of the material in quantitative storage silo 2 in real time and transmits the detection signal to controller 11. When the weight of the material in quantitative storage silo 2 reaches the set value of gravity sensor 9, controller 11 controls electric telescopic rod 8 to move again, causing baffle 7 to close the open end of feeding cylinder 4 and stop feeding. At the same time as or after feeding is completed in quantitative storage silo 2, first motor 14 drives stirring shaft 12 to rotate, and spiral stirring blades 13 on stirring shaft 12 rotate accordingly to stir the material in quantitative storage silo 2, so that the material is mixed evenly and prevents material accumulation and clumping. Distance sensor 22 on the inner wall of the top of feeding silo 3 detects the height of the material in feeding silo 3 in real time and transmits the detection signal to controller 11. When the material height is lower than the preset threshold, controller 11 triggers alarm 23 to remind staff to replenish the material in time to ensure the normal operation of the feeding system.

[0039] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An injection molding material feed system, characterized by: The application relates to a quantitative material storage bin, which comprises a support frame (1) and a quantitative material storage bin (2) sleeved on the outer wall of the support frame (1), wherein the top of the quantitative material storage bin (2) is uniformly provided with a plurality of independent feeding bins (3), the bottoms of all the feeding bins (3) are connected with feeding cylinders (4) through discharge pipes, the open end of the feeding cylinder (4) is communicated with a feeding cylinder (5), the top of the quantitative material storage bin (2) is communicated with a plurality of material guide cylinders (6), the material guide cylinders (6) are sleeved on the outer wall of the lower end of the feeding cylinder (5), the feeding cylinder (5) is provided with a baffle (7) for opening and closing the open end of the feeding cylinder (4), the outer wall of the feeding cylinder (5) is provided with an electric telescopic rod (8) for driving the baffle (7) to move, the support frame (1) is provided with uniformly distributed gravity sensors (9), the gravity sensors (9) are fixedly connected with the quantitative material storage bin (2) through connecting frames (10), and the support frame (1) is provided with a controller (11) electrically connected with the gravity sensors (9) and the electric telescopic rod (8), the controller (11) controls the opening and closing of the electric telescopic rod (8) according to the detection value of the gravity sensors (9), and the alternate quantitative feeding of the multiple feeding bins (3) is realized.

2. The injection material feeding system according to claim 1, wherein: The quantitative material storage bin (2) is provided with a stirring shaft (12), the stirring shaft (12) is provided with spiral stirring blades (13) matched with the inner wall of the bin body in a gap mode, and the top of the quantitative material storage bin (2) is provided with a first motor (14) for driving the stirring shaft (12).

3. The injection material feeding system of claim 1, wherein: The quantitative material storage bin (2) is provided with a stirring shaft (12), the stirring shaft (12) is provided with spiral stirring blades (13) matched with the inner wall of the bin body in a gap mode, and the top of the quantitative material storage bin (2) is provided with a first motor (14) for driving the stirring shaft (12).

4. The injection material feeding system of claim 3, wherein: The quantitative material storage bin (2) is provided with a stirring shaft (12), the stirring shaft (12) is provided with spiral stirring blades (13) matched with the inner wall of the bin body in a gap mode, and the top of the quantitative material storage bin (2) is provided with a first motor (14) for driving the stirring shaft (12).

5. The injection material supply system of claim 1, wherein: The quantitative material storage bin (2) is provided with a stirring shaft (12), the stirring shaft (12) is provided with spiral stirring blades (13) matched with the inner wall of the bin body in a gap mode, and the top of the quantitative material storage bin (2) is provided with a first motor (14) for driving the stirring shaft (12).

6. The injection material supply system of claim 1, wherein: The top inner wall of all the feeding bins (3) is provided with a distance sensor (22) and an alarm (23), the distance sensor (22) and the alarm (23) are electrically connected with the controller (11), and the alarm is triggered when the material height is lower than a preset threshold value.

7. The injection material supply system of claim 1, wherein: The top of the feeding bin (3) is provided with an air outlet (24), and the air outlet (24) is embedded with a filter screen (25).

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