Quantitative feeding device for heating injection molding plastic

Abstract

The utility model relates to a quantitative feeding device for heating injection molding plastics, which belongs to the technical field of feeding and comprises a mounting frame, a feeding preheating structure is arranged on the mounting frame and comprises a feeding barrel fixedly mounted on the surface of the mounting frame, a connecting pipe is fixedly mounted on the surface of the feeding barrel, and a feeding pipe is fixedly mounted on the connecting pipe. A quantitative charging barrel is fixedly mounted at the top of the connecting pipe, a heating sleeve is fixedly mounted in the quantitative charging barrel, a first heat conduction ring is fixedly mounted on the inner side surface of the heating sleeve, and a first heat conduction connecting rod is fixedly mounted on the inner side surface of the first heat conduction ring. According to the quantitative feeding device for heating the injection molding plastic, the heating sleeve is matched with the first heat conduction ring, the second heat conduction ring, the third heat conduction ring and the corresponding heat conduction connecting rods, so that a multi-layer heat conduction network is formed, heat can be more uniformly distributed to all parts in the quantitative charging barrel, and it is ensured that plastic particles can be uniformly heated; and the preheating effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of feeding technology, specifically a quantitative feeding device for heating injection-molded plastics. Background Technology

[0002] Heating the plastic during injection molding is a crucial step. Its main purpose is to heat the plastic granules to a molten state so that they can be injected into the final product.

[0003] CN220808290U discloses a quantitative feeding structure for an injection molding machine, including a conveying cylinder. Two fixing components are fixedly installed on the outside of the conveying cylinder. A discharge cylinder is located on one side of the conveying cylinder. Three heat-insulating rings are fitted around the outside of the conveying cylinder, and heat-insulating sponges are fixedly installed on the inner side of the heat-insulating rings. A feed cylinder is connected to the upper end of the conveying cylinder. A fixing plate is located on one side of the conveying cylinder, and a rotating motor is fixedly installed on one side of the fixing plate. The output shaft of the rotating motor passes through the interior of the conveying cylinder. A heating ring is fixedly installed on the inner wall of the feed cylinder, and a servo motor is fixedly installed on one side of the feed cylinder. The output shaft of the servo motor passes through the interior of the feed cylinder, and a connecting rod is fixedly installed at one end of the output shaft. This quantitative feeding structure for an injection molding machine has good heat preservation effect, allowing for preheating and heat preservation of the plastic.

[0004] The aforementioned patent addresses the drawback of existing quantitative feeding devices that pour plastic granules into the feeding cylinder before heating, which may result in some plastic granules not completely dissolving and causing blockage of the feeding cylinder. This technical solution uses a heating ring inside the feeding cylinder to preheat the plastic granules inside. However, directly heating the inner wall of the feeding cylinder with the heating ring causes the plastic granules in contact with the cylinder wall to heat up too quickly, while the plastic granules in the middle of the feeding cylinder are heated mainly through heat conduction and convection, which is slower. This results in uneven heating of the plastic granules and affects the preheating effect. Therefore, a quantitative feeding device for heating injection-molded plastics is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a quantitative feeding device for heating injection-molded plastics. It has the advantage of good preheating effect and solves the problem that the existing quantitative feeding devices directly heat the inner wall of the feed cylinder, resulting in uneven heating of the plastic particles in contact with the cylinder wall and the plastic particles in the middle of the feed cylinder, which affects the preheating effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quantitative feeding device for heating injection-molded plastics, comprising a mounting frame, wherein the mounting frame is provided with a feeding preheating structure;

[0007] The feeding preheating structure includes a feeding cylinder fixedly installed on the surface of the mounting frame. A connecting pipe is fixedly installed on the surface of the feeding cylinder. A metering cylinder is fixedly installed on the top of the connecting pipe. A heating jacket is fixedly installed inside the metering cylinder. A first heat-conducting ring is fixedly installed on the inner surface of the heating jacket. A first heat-conducting connecting rod is fixedly installed on the inner surface of the first heat-conducting ring. A second heat-conducting ring is fixedly installed at one end of the first heat-conducting connecting rod. A second heat-conducting connecting rod is fixedly installed on the inner surface of the second heat-conducting ring. A third heat-conducting ring is fixedly installed at one end of the second heat-conducting connecting rod. An auxiliary feeding component is provided on the metering cylinder. A feeding component is provided between the mounting frame and the feeding cylinder.

[0008] Furthermore, there are multiple first heat-conducting rings, which are evenly distributed on the inner surface of the heating sleeve. The number of second and third heat-conducting rings is the same as the number of first heat-conducting rings.

[0009] Furthermore, there are multiple first thermally conductive connecting rods and multiple second thermally conductive connecting rods. The multiple first thermally conductive connecting rods are evenly distributed between the first thermally conductive ring and the second thermally conductive ring, and the multiple second thermally conductive connecting rods are evenly distributed between the second thermally conductive ring and the third thermally conductive ring.

[0010] Furthermore, an auxiliary feed hopper is fixedly installed on the top of the metering cylinder, and the top diameter of the auxiliary feed hopper is larger than the bottom diameter.

[0011] Furthermore, the auxiliary feeding assembly includes a mounting ring fixedly installed on the surface of the metering cylinder. Three support rods are fixedly installed on the upper surface of the mounting ring. A connecting plate is fixedly installed on the top of the support rods. A first motor is fixedly installed on the upper surface of the connecting plate. A rotating shaft extending into the metering cylinder is fixedly installed on the output shaft of the first motor. A feeding auger is fixedly installed at the bottom of the rotating shaft.

[0012] Furthermore, the feeding auger is located inside the connecting pipe, and the surface of the feeding auger is in contact with the inner surface of the connecting pipe.

[0013] Furthermore, a plurality of evenly distributed stirring rods are fixedly installed on the surface of the rotating shaft, and the plurality of stirring rods are respectively disposed between two adjacent first heat-conducting rings, second heat-conducting rings and third heat-conducting rings.

[0014] Furthermore, an mounting plate and two support plates are fixedly mounted on the upper surface of the mounting frame, and the feeding cylinder is fixedly mounted on the surface of the support plate.

[0015] Furthermore, the feeding assembly includes a second motor fixedly mounted on the surface of the mounting plate, and a feeding auger located inside the feeding cylinder is fixedly mounted on the output shaft of the second motor. The surface of the feeding auger is in contact with the inner surface of the feeding cylinder, and a heating sleeve is fixedly mounted inside the feeding cylinder.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] 1. The quantitative feeding device for heating injection-molded plastics forms a multi-layered heat conduction network through the heating jacket, the first heat conduction ring, the second heat conduction ring, the third heat conduction ring, and the corresponding heat conduction connecting rod. This allows the heat to be distributed more evenly to all parts of the quantitative feed cylinder, ensuring that the plastic particles are heated uniformly and improving the preheating effect.

[0018] 2. This quantitative feeding device for heating injection-molded plastics uses a first motor to drive the rotation of the rotating shaft and the feeding auger, which can more smoothly feed the material in the quantitative cylinder into the feeding cylinder, avoiding the problems of material blockage or poor feeding. At the same time, the stirring rod set on the rotating shaft can also stir the material during the feeding process, further promoting the uniform heating and mixing of the material. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the surface structure of the mounting bracket of this utility model;

[0021] Figure 3 This is a top view of the first heat-conducting ring structure of this utility model.

[0022] In the diagram: 1. Mounting frame; 2. Feeding cylinder; 3. Connecting pipe; 4. Metering cylinder; 5. Heating sleeve; 6. First heat-conducting ring; 7. First heat-conducting connecting rod; 8. Second heat-conducting ring; 9. Second heat-conducting connecting rod; 10. Third heat-conducting ring; 11. Auxiliary feeding hopper; 12. Mounting support ring; 13. Support rod; 14. Connecting plate; 15. First motor; 16. Rotating shaft; 17. Feeding auger; 18. Stirring rod; 19. Support plate; 20. Mounting plate; 21. Second motor; 22. Feeding auger; 23. Heating sleeve. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1 to 3This embodiment provides a quantitative feeding device for heating injection-molded plastics, including a mounting frame 1. The mounting frame 1 is equipped with a feeding preheating structure, which includes a feeding cylinder 2 fixedly mounted on the surface of the mounting frame 1. A connecting pipe 3 is fixedly mounted on the surface of the feeding cylinder 2. A quantitative feeding cylinder 4 is fixedly mounted on the top of the connecting pipe 3. A heating sleeve 5 is fixedly mounted inside the quantitative feeding cylinder 4. A first heat-conducting ring 6 is fixedly mounted on the inner surface of the heating sleeve 5. A first heat-conducting connecting rod 7 is fixedly mounted on the inner surface of the first heat-conducting ring 6. A second heat-conducting ring 8 is fixedly mounted on one end of the first heat-conducting connecting rod 7. A second heat-conducting connecting rod 9 is fixedly mounted on the inner surface of the second heat-conducting ring 8. A third heat-conducting ring 10 is fixedly mounted on one end of the second heat-conducting connecting rod 9.

[0025] The heating sleeve 5 has multiple first heat-conducting rings 6, which are evenly distributed on the inner surface of the heating sleeve 5. The number of second heat-conducting rings 8 and third heat-conducting rings 10 is the same as the number of first heat-conducting rings 6. The heating sleeve 5 has multiple first heat-conducting connecting rods 7 and second heat-conducting connecting rods 9, which are evenly distributed between the first heat-conducting rings 6 and second heat-conducting rings 8. The heating sleeve 9 is evenly distributed between the second heat-conducting rings 8 and third heat-conducting rings 10. The mounting bracket 1 has a mounting plate 20 and two support plates 19 fixedly installed on its upper surface. The feeding cylinder 2 is fixedly installed on the surface of the support plate 19.

[0026] An auxiliary feed hopper 11 is fixedly installed on the top of the metering cylinder 4. The top diameter of the auxiliary feed hopper 11 is larger than the bottom diameter, which makes it easier to feed the material into the metering cylinder 4.

[0027] The metering cylinder 4 is equipped with an auxiliary feeding assembly, which includes a mounting ring 12 fixedly installed on the surface of the metering cylinder 4. Three support rods 13 are fixedly installed on the upper surface of the mounting ring 12. A connecting plate 14 is fixedly installed on the top of the support rods 13. A first motor 15 is fixedly installed on the upper surface of the connecting plate 14. A rotating shaft 16 extending into the metering cylinder 4 is fixedly installed on the output shaft of the first motor 15. A feeding auger 17 is fixedly installed at the bottom of the rotating shaft 16. By setting up the auxiliary feeding assembly, it is easier to feed the material in the metering cylinder 4 into the feeding cylinder 2.

[0028] It should be noted that the feeding auger 17 is located inside the connecting pipe 3, and the surface of the feeding auger 17 is in contact with the inner surface of the connecting pipe 3.

[0029] It should be noted that a number of evenly distributed stirring rods 18 are fixedly installed on the surface of the rotating shaft 16. The stirring rods 18 are respectively arranged between two adjacent first heat-conducting rings 6, second heat-conducting rings 8 and third heat-conducting rings 10. The stirring rods 18 facilitate the stirring of materials.

[0030] A feeding assembly is provided between the mounting frame 1 and the feeding cylinder 2. The feeding assembly includes a second motor 21 fixedly mounted on the surface of the mounting plate 20. The output shaft of the second motor 21 is fixedly mounted with a feeding auger 22 located inside the feeding cylinder 2. The surface of the feeding auger 22 is in contact with the inner surface of the feeding cylinder 2. A heating sleeve 23 is fixedly mounted inside the feeding cylinder 2.

[0031] The working principle of the above embodiments is as follows:

[0032] The material is first fed into the metering cylinder 4 through the auxiliary feeding hopper 11. The heating jacket 5 heats up, and the heat from the surface of the heating jacket 5 is evenly distributed to various parts of the metering cylinder 4 through the first heat-conducting ring 6, the first heat-conducting connecting rod 7, the second heat-conducting ring 8, the second heat-conducting connecting rod 9, and the third heat-conducting ring 10. The first motor 15 drives the rotating shaft 16 to rotate, which in turn drives the feeding auger 17 to rotate in the connecting pipe 3, feeding the material in the metering cylinder 4 into the feeding cylinder 2. The stirring rod 18 on the surface of the rotating shaft 16 can stir the material, further promoting the uniform heating and mixing of the material. The second motor 21 drives the feeding auger 22 to rotate in the feeding cylinder 2, conveying the material from one end of the feeding cylinder 2 to the other end. At the same time, the heating jacket 23 inside the feeding cylinder 2 further heats the material to ensure that the material maintains a suitable temperature during the conveying process.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] 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. A quantitative feeding device for heating injection-molded plastics, comprising a mounting frame, characterized in that: The mounting frame is equipped with a feeding and preheating structure; The feeding preheating structure includes a feeding cylinder fixedly installed on the surface of the mounting frame. A connecting pipe is fixedly installed on the surface of the feeding cylinder. A metering cylinder is fixedly installed on the top of the connecting pipe. A heating jacket is fixedly installed inside the metering cylinder. A first heat-conducting ring is fixedly installed on the inner surface of the heating jacket. A first heat-conducting connecting rod is fixedly installed on the inner surface of the first heat-conducting ring. A second heat-conducting ring is fixedly installed at one end of the first heat-conducting connecting rod. A second heat-conducting connecting rod is fixedly installed on the inner surface of the second heat-conducting ring. A third heat-conducting ring is fixedly installed at one end of the second heat-conducting connecting rod. An auxiliary feeding component is provided on the metering cylinder. A feeding component is provided between the mounting frame and the feeding cylinder.

2. The quantitative feeding device for heating injection-molded plastics according to claim 1, characterized in that: The number of the first heat-conducting rings is multiple, and the multiple first heat-conducting rings are evenly distributed on the inner surface of the heating sleeve. The number of the second and third heat-conducting rings is the same as the number of the first heat-conducting rings.

3. A quantitative feeding device for heating injection-molded plastics according to claim 1, characterized in that: There are multiple first thermally conductive connecting rods and multiple second thermally conductive connecting rods. The multiple first thermally conductive connecting rods are evenly distributed between the first thermally conductive ring and the second thermally conductive ring, and the multiple second thermally conductive connecting rods are evenly distributed between the second thermally conductive ring and the third thermally conductive ring.

4. A quantitative feeding device for heating injection-molded plastics according to claim 1, characterized in that: An auxiliary feed hopper is fixedly installed at the top of the metering cylinder, and the top diameter of the auxiliary feed hopper is larger than the bottom diameter.

5. A quantitative feeding device for heating injection-molded plastics according to claim 1, characterized in that: The auxiliary feeding assembly includes a mounting ring fixedly installed on the surface of the metering cylinder. Three support rods are fixedly installed on the upper surface of the mounting ring. A connecting plate is fixedly installed on the top of the support rods. A first motor is fixedly installed on the upper surface of the connecting plate. A rotating shaft extending into the metering cylinder is fixedly installed on the output shaft of the first motor. A feeding auger is fixedly installed at the bottom of the rotating shaft.

6. A quantitative feeding device for heating injection-molded plastics according to claim 5, characterized in that: The feeding auger is located inside the connecting pipe, and the surface of the feeding auger is in contact with the inner surface of the connecting pipe.

7. A quantitative feeding device for heating injection-molded plastics according to claim 5, characterized in that: The rotating shaft surface is fixedly mounted with a plurality of evenly distributed stirring rods, which are respectively arranged between two adjacent first heat-conducting rings, second heat-conducting rings and third heat-conducting rings.

8. A quantitative feeding device for heating injection-molded plastics according to claim 1, characterized in that: The mounting frame has a mounting plate and two support plates fixedly mounted on its upper surface, and the feeding cylinder is fixedly mounted on the surface of the support plate.

9. A quantitative feeding device for heating injection-molded plastics according to claim 8, characterized in that: The feeding assembly includes a second motor fixedly mounted on the surface of the mounting plate. The output shaft of the second motor is fixedly mounted with a feeding auger located inside the feeding cylinder. The surface of the feeding auger is in contact with the inner surface of the feeding cylinder. A heating sleeve is fixedly mounted inside the feeding cylinder.

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