Polymer material pre-heating modification equipment for sports equipment rotational molding

Abstract

This utility model proposes a preheating and modification device for polymer materials used in the rotational molding of sports equipment. The device includes a mixing drum, with a hopper fixedly connected to the upper surface of the mixing drum. An electric injection valve is fixedly connected to the outer surface of the bottom of the hopper. A feeding component is located above the hopper, and a mixing component is located outside the mixing drum. An annular electric heating cover is fixedly connected to the outer surface of the hopper. This invention relates to the field of rotational molding of sports equipment. This utility model, through the combination of the annular electric heating cover and the arc-shaped electric heating wire, forms a dual preheating assembly. Furthermore, the stable feeding by the feeding component and the efficient mixing by the mixing component ensure uniform preheating of the material. Additionally, a centrifugal pump extracts modifier from the modifier storage tank via a suction pipe and sprays it evenly onto the surface of the high-temperature material through a nozzle, enabling modification during preheating. Thus, preheating and modification can be quickly completed within a single device, improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rotational molding of sports equipment, specifically to a preheating and modification equipment for polymer materials used in rotational molding of sports equipment. Background Technology

[0002] Rotational molding of sports equipment is a process in which powdered or granular polymer materials are added to a mold, and the material is evenly coated onto the inner wall of the mold under the action of centrifugal force and gravity through heating and rotation of the mold. After cooling and solidification, the mold is formed. This molding method can produce hollow, seamless, and complex-shaped sports equipment, such as plastic basketball hoop bases, children's playground equipment, and fitness equipment shells. These products are all integrally molded using rotational molding technology, which has the advantages of high product strength, impact resistance, and corrosion resistance. It is widely used in various sports equipment manufacturing fields.

[0003] Before the production of rotational molding for sports equipment, it is necessary to preheat and modify polymer materials in an integrated manner. However, currently, the preheating and modification of polymer materials are often carried out in different steps in different equipment, resulting in a lengthy and inefficient production process. In addition, it increases the risk of loss and contamination during material transfer. To address these issues, we propose a polymer material preheating and modification equipment for rotational molding of sports equipment. Utility Model Content

[0004] The purpose of this invention is to provide a preheating modification device for polymer materials used in the rotational molding of sports equipment, so as to solve the problems mentioned in the background art and overcome its technical defects.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a preheating modification device for polymer materials used in the rotational molding of sports equipment, including a stirring drum, a hopper fixedly connected to the upper surface of the stirring drum, an electric injection valve fixedly connected to the outer surface of the bottom end of the hopper, a feeding component above the hopper, a mixing component outside the stirring drum, an annular electric heating cover fixedly connected to the outer surface of the hopper, an arc-shaped electric heating wire fixedly embedded inside the stirring drum, a modifier storage tank outside the stirring drum, a centrifugal pump fixedly installed on the upper surface of the modifier storage tank, a drain pipe fixedly connected to the output end of the centrifugal pump, one end of the drain pipe penetrating the stirring drum and extending into the interior of the stirring drum, a delivery pipe fixedly connected to the other end of the drain pipe, multiple nozzles fixedly connected to the bottom surface of the delivery pipe, a suction pipe fixedly connected to the input end of the centrifugal pump, and a suction pipe penetrating the bottom end of the suction pipe and extending into the interior of the modifier storage tank.

[0006] Preferably, the feeding component includes a first variable frequency motor fixedly installed on the upper surface of the feeding hopper, a drive rod fixedly installed at the output end of the first variable frequency motor, and a spiral feeding blade fixedly connected to the outer surface of the drive rod.

[0007] Preferably, the mixing component includes a second variable frequency motor fixedly mounted on one side of the mixing drum, a stirring rod fixedly mounted on the output end of the second variable frequency motor, a spiral mixing blade fixedly connected to the outer surface of the stirring rod, and two bearings fixedly embedded in the inner wall of the mixing drum, with the inner rings of the two bearings fixedly connected to the outer surfaces of both ends of the stirring rod.

[0008] Preferably, a discharge pipe is fixedly connected to one side of the mixing drum, and a discharge electric valve is fixedly connected to the outer surface of the discharge pipe.

[0009] Preferably, the upper surface of the injection hopper is fixedly connected to an injection hood, and the upper surface of the modifier storage tank is provided with an injection hole.

[0010] Preferably, a support base is fixedly connected to one side of the stirring cylinder, the upper surface of the support base is fixedly connected to the bottom surface of the annular electric heating cover, and a controller is fixedly installed on one side of the support base.

[0011] Compared with the prior art, the beneficial effects of this utility model include: by combining the annular electric heating cover and the arc-shaped electric heating wire, a dual preheating component can be formed. In addition, with the stable feeding of the feeding component and the efficient stirring of the mixing component, the material will be uniformly preheated. Furthermore, the centrifugal pump extracts the modifier from the modifier storage tank through the liquid extraction pipe and sprays it evenly onto the surface of the high-temperature material through the nozzle, which can carry out the modification treatment during preheating. Thus, preheating and modification can be quickly completed in one piece of equipment. Compared with the traditional step-by-step processing, it improves production efficiency, reduces transfer links, and avoids external pollution. Attached Figure Description

[0012] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front; Figure 2 This is a frontal sectional view of the present invention; Figure 3 This is a side sectional view of the present invention; Figure 4 This is a top sectional view of the present invention; Labels in the diagram: 1. Mixing drum; 2. Injection hopper; 3. Injection electric valve; 4. Feeding component; 401. First variable frequency motor; 402. Drive rod; 403. Spiral injection blade; 5. Annular electric heating cover; 6. Mixing component; 601. Second variable frequency motor; 602. Mixing rod; 603. Spiral mixing blade; 604. Bearing; 7. Infusion pipe; 8. Nozzle; 9. Drain pipe; 10. Centrifugal pump; 11. Extraction pipe; 12. Modifier storage tank; 13. Injection hole; 14. Arc-shaped electric heating wire; 15. Discharge electric valve; 16. Support base; 17. Controller; 18. Injection cover; 19. Discharge pipe. Detailed Implementation

[0013] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0014] According to one embodiment of the present invention, in conjunction with the appendix Figure 1-4 As shown.

[0015] A preheating modification device for polymer materials used in rotational molding of sports equipment includes a mixing drum 1. A hopper 2 is fixedly connected to the upper surface of the mixing drum 1. An electric injection valve 3 is fixedly connected to the outer surface of the bottom end of the hopper 2. A feeding component 4 is located above the hopper 2. A mixing component 6 is located outside the mixing drum 1. An annular electric heating cover 5 is fixedly connected to the outer surface of the hopper 2. An arc-shaped electric heating wire 14 is fixedly embedded inside the mixing drum 1. A modifier storage tank 12 is located outside the mixing drum 1. A centrifugal pump 10 is fixedly installed on the upper surface of the modifier storage tank 12. A drain pipe 9 is fixedly connected to the output end of the centrifugal pump 10. One end of the drain pipe 9 passes through the mixing drum 1 and extends into the interior of the mixing drum 1. A delivery pipe 7 is fixedly connected to the bottom surface of the delivery pipe 7. Multiple nozzles 8 are fixedly connected. The input end of the centrifugal pump 10 is fixedly connected to a liquid extraction pipe 11. The bottom end of the liquid extraction pipe 11 passes through the modifier storage tank 12 and extends into the interior of the modifier storage tank 12. The centrifugal pump 10 extracts the modifier from the storage tank through the liquid extraction pipe 11, which can be transported through the drain pipe 9 and the delivery pipe 7. Finally, it is evenly sprayed onto the surface of the material in the mixing drum 1 by the nozzles 8, which will complete the modification treatment. The mixing drum 1 is the core processing space of the equipment, which carries the preheating and modification process of the polymer material. The speed and amount of material flowing into the mixing drum 1 can be controlled by the electric valve 3. The annular electric heating cover 5 is wrapped around the surface of the injection hopper 2, which can preheat the material during the transportation process, so that the material reaches a certain temperature before entering the mixing drum 1.

[0016] In this embodiment, the feeding component 4 includes a first variable frequency motor 401 fixedly mounted on the upper surface of the feeding hopper 2, a drive rod 402 fixedly mounted on the output end of the first variable frequency motor 401, and a spiral feeding blade 403 fixedly connected to the outer surface of the drive rod 402. The mixing component 6 includes a second variable frequency motor 601 fixedly mounted on one side of the mixing drum 1, a stirring rod 602 fixedly mounted on the output end of the second variable frequency motor 601, a spiral mixing blade 603 fixedly connected to the outer surface of the stirring rod 602, and two spiral mixing blades 603 fixedly embedded in the inner wall of the mixing drum 1. The inner rings of the two bearings 604 are fixedly connected to the outer surfaces of both ends of the stirring rod 602. After being started by the second variable frequency motor 601, they can drive the stirring rod 602 and the spiral mixing blade 603 to rotate, which facilitates the mixing of materials. In addition, the bearings 604 can provide stable support for the stirring rod 602. The modifier storage tank 12 is used to store various modifiers. The first variable frequency motor 401 drives the drive rod 402, which can drive the spiral injection blade 403 to rotate, so as to realize the uniform push of materials from the injection hopper 2 to the mixing drum 1.

[0017] In this embodiment, a discharge pipe 19 is fixedly connected to one side of the mixing drum 1, and a discharge electric valve 15 is fixedly connected to the outer surface of the discharge pipe 19. A discharge hood 18 is fixedly connected to the upper surface of the hopper 2. A discharge hole 13 is opened on the upper surface of the modifier storage tank 12. A support base 16 is fixedly connected to one side of the mixing drum 1. The upper surface of the support base 16 is fixedly connected to the bottom surface of the annular electric heating cover 5. A controller 17 is fixedly installed on one side of the support base 16. After the material has completed preheating and modification, the discharge electric valve 15 is opened through the discharge pipe 19 and the discharge electric valve 15, and the material can be discharged through the discharge pipe 19. The support base 16 plays a role in stabilizing the equipment structure. The controller 17 can flexibly adjust parameters such as preheating temperature, modifier addition amount, and stirring speed.

[0018] Working principle: First, polymer material is fed into the hopper 2 through the injection hood 18. Then, the feeding device 4 is turned on. The first variable frequency motor 401 drives the drive rod 402 and the spiral injection blade 403 to rotate, which can push the material into the mixing drum 1 at a uniform speed. During this process, the annular electric heating hood 5 preheats the material. In addition, the arc-shaped electric heating wire 14 embedded in the mixing drum 1 heats the material inside the mixing drum 1 a second time. Next, after the material enters the mixing drum 1, the centrifugal pump 10 draws the modifier from the modifier storage tank 12 through the extraction pipe 11, and transports it through the drain pipe 9 and the delivery pipe 7. Finally, it is evenly sprayed onto the surface of the high-temperature material by the nozzle 8. At the same time, the second variable frequency motor 601 of the mixing component 6 drives the stirring rod 602 and the spiral mixing blade 603 to rotate, which can achieve full mixing of the material and the modifier. After the preheating modification treatment is completed, the discharge electric valve 15 is opened, and the material is discharged through the discharge pipe 19.

[0019] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A preheating modification equipment for polymer materials used in rotational molding of sports equipment, characterized in that, The system includes a mixing drum (1), a hopper (2) fixedly connected to the upper surface of the mixing drum (1), an electric valve (3) fixedly connected to the outer surface of the bottom end of the hopper (2), a feeding component (4) above the hopper (2), a mixing component (6) outside the mixing drum (1), an annular electric heating cover (5) fixedly connected to the outer surface of the hopper (2), an arc-shaped electric heating wire (14) fixedly embedded inside the mixing drum (1), and a modifier storage tank (12) outside the mixing drum (1). A centrifugal pump (10) is fixedly installed on the upper surface of the centrifugal pump (10). The output end of the centrifugal pump (10) is fixedly connected to a drain pipe (9). One end of the drain pipe (9) passes through the stirring drum (1) and extends into the interior of the stirring drum (1). One end of the drain pipe (9) is fixedly connected to a delivery pipe (7). The bottom surface of the delivery pipe (7) is fixedly connected to multiple nozzles (8). The input end of the centrifugal pump (10) is fixedly connected to a suction pipe (11). The bottom end of the suction pipe (11) passes through the modifier storage tank (12) and extends into the interior of the modifier storage tank (12).

2. The preheating and modification equipment for polymer materials used in the rotational molding of sports equipment according to claim 1, characterized in that, The feeding component (4) includes a first variable frequency motor (401) fixedly installed on the upper surface of the feeding hopper (2), a drive rod (402) fixedly installed at the output end of the first variable frequency motor (401), and a spiral feeding blade (403) fixedly connected to the outer surface of the drive rod (402).

3. The preheating and modification equipment for polymer materials used in the rotational molding of sports equipment according to claim 1, characterized in that, The mixing component (6) includes a second variable frequency motor (601) fixedly installed on one side of the mixing drum (1), a stirring rod (602) fixedly installed at the output end of the second variable frequency motor (601), and a spiral mixing blade (603) fixedly connected to the outer surface of the stirring rod (602).

4. The preheating and modification equipment for polymer materials used in the rotational molding of sports equipment according to claim 3, characterized in that, The inner wall of the stirring cylinder (1) is fixedly inlaid with two bearings (604), and the inner rings of the two bearings (604) are fixedly connected to the outer surfaces of both ends of the stirring rod (602).

5. The preheating and modification equipment for polymer materials used in the rotational molding of sports equipment according to claim 1, characterized in that, The mixing drum (1) is fixedly connected to a discharge pipe (19) on one side, and a discharge electric valve (15) is fixedly connected to the outer surface of the discharge pipe (19).

6. The preheating and modification equipment for polymer materials used in the rotational molding of sports equipment according to claim 1, characterized in that, The upper surface of the injection hopper (2) is fixedly connected to the injection hood (18), and the upper surface of the modifier storage tank (12) is provided with an injection hole (13).

7. The preheating modification equipment for polymer materials used in the rotational molding of sports equipment according to claim 1, characterized in that, A support base (16) is fixedly connected to one side of the stirring tank (1). The upper surface of the support base (16) is fixedly connected to the bottom surface of the annular electric heating cover (5). A controller (17) is fixedly installed on one side of the support base (16).

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