Extruder with dosing

Abstract

The utility model relates to a kind of extruder with quantitative feeding, including base, the front end of the base is installed die holder, the die holder has forming die, the rear end of the base is equipped with power mechanism, the power mechanism includes main cylinder, main plunger, extruding rod, the base between the extruding rod and the die holder is installed ingot cylinder, the top of the base is equipped with feeding mechanism, the feeding mechanism includes control unit, screw quantitative feeding mechanism, aluminium scrap storage hopper, feeding hopper, the utility model has the advantages and beneficial effects that: provide a kind of extruder with quantitative feeding, the material required by the extruder uses aluminium scrap, by aluminium scrap heating device, screw quantitative feeding mechanism is fed to it, then extrusion, aluminium scrap can be extruded into solid bar etc., improve the added value of aluminium scrap.

Description

Technical Field

[0001] This utility model relates to the field of aluminum profile extrusion equipment, and in particular to an extruder with quantitative feeding. Background Technology

[0002] An aluminum profile extrusion press is a key piece of equipment used to extrude aluminum billets or bars into profiles with the required cross-sectional shape through a die. Its main process is as follows: heating the aluminum billet, feeding it into the extrusion cylinder, applying pressure with the extrusion rod, forming the aluminum material through the die, cooling, straightening and cutting, thereby realizing the processing of aluminum profiles. During the production and use of aluminum products, a large amount of aluminum shavings are generated. According to relevant statistics, the weight of aluminum shavings generated from the machining of aluminum parts can reach more than 20% of the raw materials being processed. If these aluminum shavings are directly put into the remelting process, they often face severe burn-off problems. For example, in traditional processes, fine aluminum shavings are directly fed into the melting furnace. The aluminum shavings are very easy to react with air to form aluminum oxide, resulting in a very low recovery rate, often less than 50% of the original weight of the aluminum shavings. Even when using a medium-frequency induction furnace for heating and melting, the oxidation and scrapping of aluminum shavings is still significant, with a recovery rate of only about 50%. Utility Model Content

[0003] The purpose of this invention is to overcome the defects in the existing technology and provide an extruder with quantitative feeding to extrude aluminum chips into shape, thereby increasing the added value of aluminum chips.

[0004] To achieve the above objectives, the technical solution of this utility model is to design an extruder with quantitative feeding, including a machine base, a mold base installed at the front end of the machine base, the mold base having a forming mold, a power mechanism provided at the rear end of the machine base, the power mechanism including a main cylinder, a main plunger, and an extrusion rod, an ingot holding cylinder installed between the extrusion rod and the mold base, and a feeding mechanism provided above the machine base, the feeding mechanism including a control unit, a heating device, a screw-type quantitative feeding mechanism, an aluminum chip storage hopper, and a feeding funnel.

[0005] In a further preferred embodiment, the base is equipped with a column, and a heating device and a screw-type quantitative feeding mechanism are mounted on the column via a support plate. The screw-type quantitative feeding mechanism includes a drive motor, and a rotating shaft is mounted on the input end of the drive motor via a coupling. A feeding frame is fixed on the outer wall of the column on one side of the drive motor, and a control unit is mounted on one side of the surface of the feeding frame. The input end of the control unit is electrically connected to the output end of the microcontroller inside the drive motor.

[0006] In a further preferred embodiment, a feeding screw is hinged inside the feeding frame, one end of the feeding screw is fixedly connected to one end of the rotating shaft, a feeding funnel communicating with the feeding frame is provided at the lower part of the feeding frame, and an aluminum shavings storage hopper is fixed on the column above the feeding frame, the aluminum shavings storage hopper being connected to the interior of the feeding frame through a pipe.

[0007] A further preferred technical solution is that a lifting frame is provided between the ingot container and the extrusion rod.

[0008] In a further preferred embodiment, the feeding mechanism is positioned above the lifting frame.

[0009] The advantages and beneficial effects of this utility model are as follows: It provides an extruder with quantitative feeding, wherein the material required by the extruder is aluminum shavings, which are fed through a heating device and a screw-type quantitative feeding mechanism, and then extruded, thus avoiding the problem of large-scale burning caused by the direct melting of aluminum shavings.

[0010] Moreover, the extruder uses quantitative feeding, which avoids material waste, reduces production costs, achieves automatic feeding, and improves production efficiency. Attached Figure Description

[0011] Figure 1 This is the front view of the present utility model; In the diagram: 10. Machine base; 11. Extrusion rod; 12. Lifting frame; 13. Ingot container; 14. Die base; 15. Main cylinder; 16. Main plunger; 20. Feeding mechanism; 21. Aluminum chip storage hopper; 22. Screw-type quantitative feeding mechanism; 23. Control unit; 24. Feeding funnel; 25. Heating device. Detailed Implementation

[0012] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0013] Reference Figure 1As shown, an extruder with quantitative feeding includes a base 10. A die holder 14 is mounted at the front end of the base 10. The die holder 14 has a forming die. Aluminum material is extruded into the desired shape through the forming die. A power mechanism is provided at the rear end of the base 10. The power mechanism includes a main cylinder 15, a main plunger 16, and an extrusion rod 11. The end of the main plunger 16 near the die holder 14 has a retractable extrusion rod 11, and the end of the main plunger 16 away from the die holder 14 has the main cylinder 15. The power mechanism provides power to push the aluminum material into the forming die of the die holder 14, so that the aluminum material is extruded and shaped in the forming die. The distance between the extrusion rod 11 and the die holder 14 is... The base 10 is equipped with a billet cylinder 13, which is equipped with a heating coil to keep the aluminum material heated and maintained at a suitable extrusion temperature. The billet cylinder 13 is connected to the die holder 14 by a set of guide columns arranged laterally. The billet cylinder 13 can slide to one side of the die holder. When the extruder is working, the hydraulic cylinder pressure of the billet cylinder 13 pushes the front end face of the billet cylinder 13 to press against the die holder 14, so that the rear end face of the die holder 14 is tightly sealed against the front end face of the billet cylinder 13. At this time, the main cylinder 15 presses up to the highest pressure value of the machine, pushing the extrusion rod 11 on the main plunger 16 to extrude the aluminum material in the billet cylinder 13, which is then pressed into a high-density molding material by the highest working pressure designed by the extruder.

[0014] A lifting frame 12 is also provided between the ingot holding cylinder 13 and the extrusion rod 11. The lifting frame 12 is used to receive aluminum material before extrusion. The lifting frame 12 is connected to the front end of the ingot holding cylinder 13 so that the aluminum material enters the cylinder from the front end of the ingot holding cylinder 13.

[0015] Above the lifting frame 12, there is a feeding mechanism 20, which includes a control unit 23, a screw-type quantitative feeding mechanism 22, an aluminum chip storage hopper 21, a feeding funnel 24, and a heating device 25. The base 10 is equipped with a column, and a screw-type quantitative feeding mechanism 22 is mounted on the column via a support plate. The screw-type quantitative feeding mechanism 22 includes a drive motor, which can be a Y112M-2 model. The input end of the drive motor is connected to a rotating shaft via a coupling. A feeding frame is fixed on the outer wall of the column on one side of the drive motor. A control unit 23 is mounted on one side of the surface of the feeding frame. The control unit 23 can be a KTP600 model. The input end of the control unit 23 is electrically connected to the output end of the microcontroller inside the drive motor.

[0016] A feeding screw is hinged inside the feeding frame. One end of the feeding screw is fixedly connected to one end of the rotating shaft. A feeding funnel 24 communicating with the feeding frame is provided at the lower part of the feeding frame near the lifting frame 12. An aluminum chip storage hopper 21 and a heating device 25 are fixed on the column above the feeding frame. The aluminum chip storage hopper 21 is connected to the inside of the feeding frame through a pipe.

[0017] Working principle: When in use, an external power supply is connected. First, the material to be added is injected into the aluminum chip heating device 25. After the aluminum chips reach the temperature, they enter the storage hopper 21. After addition, the control unit 23 is operated to control the drive motor to work. The drive motor drives the feeding screw to rotate under the action of the rotating shaft to add the material. The material falls into the lifting frame 12 through the feeding funnel 24. The lifting frame 12 injects the material into the ingot container 13 to achieve quantitative feeding.

[0018] Then, the ingot container 13 closes: the ingot container 13 is pushed forward to the standby position by hydraulic means; the main cylinder 15 advances rapidly: the main cylinder 15 is pushed forward by hydraulic means to make the main plunger 11 advance rapidly (at no-load speed).

[0019] Main cylinder 15 working advance: The filling valve and auxiliary cylinder are closed, and the main cylinder 15 pushes the material to expand in the ingot container 13.

[0020] Exhausting the air in the ingot container 13: Set the pressure range inside the ingot container 13 to 100-150 kg / cm, hold the pressure for 1-2 seconds, then move the main cylinder 15 back for 5-6 seconds, move the ingot container 13 back for 4-5 seconds, and then exhaust the air inside the ingot container 13.

[0021] The main cylinder 15 and the billet cylinder 13 pressurize to the highest pressure value of the extruder, 280-350MPa, and hold the pressure for ≥1 second: The feed material is compressed by the main plunger 16 on the main cylinder 15 in the billet cylinder 13, and the pressure rapidly increases to the peak value and is maintained at the peak pressure.

[0022] Peak pressure discharge from ingot cylinder 13: The pressure inside ingot cylinder 13 rapidly increases to its peak value, and under the extrusion force of the main plunger 16, the material is discharged through the mold.

[0023] The ingot container 13 slowly releases the material: After the ingredients are extruded through the mold, the ingot container 13 slowly releases the material, which reduces the friction between the ingredients and the extrusion cylinder and stabilizes the discharge.

[0024] Material discharge inspection: The extruded material must have a smooth surface, no longitudinal indentations or tactile feedback, and qualified forming degree. For each straightened profile, a 500mm sample is taken from 700mm distances at both ends to check for tail shrinkage, no interlayer, and no black core strips, in order to meet national standards. The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A quantitative feeding extruder comprising a frame, a die seat is mounted at the front end of the frame, the die seat has a forming die, a power mechanism is provided at the rear end of the frame, the power mechanism comprises a main cylinder, a main plunger, an extruding rod, the frame is provided with a ladle cylinder between the extruding rod and the die seat, characterized in that, The machine base is provided with a feeding mechanism, which includes a control unit, a heating device, a screw-type quantitative feeding mechanism, an aluminum chip storage hopper, and a feeding funnel.

2. An extruder with quantitative feeding according to claim 1, characterized in that, The base is equipped with a column, and a heating device and a screw-type quantitative feeding mechanism are mounted on the column via a support plate. The screw-type quantitative feeding mechanism includes a drive motor, and a rotating shaft is mounted on the input end of the drive motor via a coupling. A feeding frame is fixed on the outer wall of the column on one side of the drive motor. A control unit is mounted on one side of the surface of the feeding frame, and the input end of the control unit is electrically connected to the output end of the microcontroller inside the drive motor.

3. An extruder with quantitative feeding according to claim 2, characterized in that, A feeding screw is hinged inside the feeding frame. One end of the feeding screw is fixedly connected to one end of the rotating shaft. A feeding funnel communicating with the feeding frame is provided at the bottom of the feeding frame. An aluminum chip storage hopper is fixed on the column above the feeding frame. The aluminum chip storage hopper is connected to the inside of the feeding frame through a pipe.

4. An extruder with quantitative feeding according to claim 1, characterized in that, A lifting frame is also provided between the ingot container and the extrusion rod.

5. An extruder with quantitative feeding according to claim 4, characterized in that, The feeding mechanism is located above the lifting frame.

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