Raw material melting device for rotational molding box
By using the screening and melting components of the rotational molding box raw material melting device to separate and stir the plastic particles, the problem of incomplete melting of large particles in existing devices is solved, thus improving melting quality and working efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HAIZHI PLASTIC TECHNOLOGY CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-21
AI Technical Summary
Existing rotational molding box raw material melting devices are unable to fully melt raw materials with larger particles, resulting in excessively long melting times, poor melting effects, and easy clogging of the injection molding machine, leading to low working efficiency.
A rotomolding raw material melting device was designed, comprising a screening component and a melting component. The plastic particles are screened by the screening box to separate smaller and larger particles, which are then melted separately. The particles are stirred by a servo motor and a stirring shaft, heated by a heating plate, and finally mixed and melted in a melting tank.
It effectively prevents larger particles from melting incompletely, improves melting quality, prevents clogging, and increases work efficiency.
Smart Images
Figure CN224145086U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of melting device technology, and in particular to a melting device for raw materials in a rotational molding box. Background Technology
[0002] Rotational molding boxes are mostly processed by injection molding machines or vacuum hot press molding machines. However, before injection molding, the raw materials need to be melted and then flowed into various rotational molding box molds to obtain the desired rotational molding box finished product.
[0003] Existing rotomolding injection molding raw material melting devices have difficulty fully melting raw materials with larger particles, and the melting time is too long, resulting in poor raw material melting effect, easy clogging of injection molding machine, and low working efficiency. Utility Model Content
[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a raw material melting device for rotational molding box. This device can solve the problems that existing raw material melting devices for rotational molding box injection molding have difficulty in fully melting raw materials with large particles, and the melting time is too long, resulting in poor melting effect and easy blockage of the injection molding machine, as well as low working efficiency.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotomolding box raw material melting device, comprising a fixed base plate, two support frames fixedly connected to the upper surface of the fixed base plate, a melting tank fixedly connected to the upper surface of the two support frames, and an L-shaped mounting bracket fixedly connected to the upper surface of the fixed base plate;
[0006] Melting assembly, which is installed on the melting tank;
[0007] A screening assembly is mounted on an L-shaped mounting frame. The screening assembly includes a screening box, which is fixedly connected to the front surface of the L-shaped mounting frame.
[0008] The screening box has a rectangular groove on its front surface, a rectangular feed inlet on its upper surface, and a rectangular plate on its rear inner wall.
[0009] Two first springs are fixedly connected to the upper surface of the rectangular plate, and a sieve plate is fixedly connected to the upper surface of the two first springs.
[0010] Preferably, the front end of the sieve plate extends inclinedly out of the inner wall of the rectangular groove, and two concave mounting plates are fixedly connected to the lower surface of the sieve plate.
[0011] Among them, a vibrating motor is fixedly connected to the concave part of each of the two concave mounting plates, and the output end of each of the two vibrating motors is fixedly connected to the sieve plate.
[0012] Two second springs are fixedly connected to the lower surface of the sieve plate, and both second springs are fixedly connected to the inner wall of the rectangular groove.
[0013] Preferably, a second feed box is fixedly connected inside the screening box, the second feed box is located on the lower side of the screen plate, and two fixing plates are fixedly connected to the front surface of the screening box;
[0014] Among them, the front surfaces of the two fixed plates are fixedly connected to the first feed box, and the lower surfaces of the first feed box and the second feed box are fixedly connected to the second connecting pipes that communicate with them;
[0015] Each of the two second connecting pipes is equipped with a first control valve, and the lower end of the rear second connecting pipe extends through the lower surface of the screening box.
[0016] Preferably, the lower ends of the two second connecting pipes are fixedly connected to rectangular melting boxes communicating with them, and the opposite surfaces of the two rectangular melting boxes are rotatably connected to a first stirring shaft;
[0017] The front and rear ends of the first stirring shaft respectively rotate through the inner wall of the corresponding rectangular melting box and are rotatably connected to the inner wall of the corresponding rectangular melting box.
[0018] Preferably, two sets of first stirring heating plates are fixedly connected to the outer wall of the first stirring shaft. Each set of first stirring heating plates consists of multiple first stirring heating plates, and the front end of the first stirring shaft rotates through the front surface of the rectangular melting box located on the front side.
[0019] Preferably, the melting assembly includes a mounting frame, which is fixedly connected to the front surface of the melting tank. A servo motor is fixedly mounted on the upper surface of the mounting frame, and a second stirring shaft is fixedly connected to the output end of the servo motor.
[0020] The second stirring shaft and the outer wall of the first stirring shaft are both fixedly fitted with pulleys. The two pulleys are connected together by belt drive. The rear end of the second stirring shaft rotates through the interior of the melting tank and rotates to connect with the inner wall of the melting tank.
[0021] Among them, multiple second stirring heating plates are fixedly connected to the outer wall of the second stirring shaft, and two first connecting pipes communicating with it are fixedly connected to the upper surface of the melting tank. A second control valve is provided on each of the two first connecting pipes.
[0022] The upper ends of the two first connecting pipes penetrate into the interior of the corresponding rectangular melting tanks, and heating devices are provided on the inner walls of both rectangular melting tanks and melting vessels.
[0023] The rear surface of the melting tank is fixedly connected to a discharge pipe, which is equipped with a third control valve.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] (1) The rotomolding box raw material melting device uses a screening component to screen a batch of plastic particles, separating smaller plastic particles and larger plastic particles. The smaller plastic particles and larger plastic particles are then melted separately and finally melted together. This effectively prevents the larger plastic particles from being incompletely melted when the smaller and larger plastic particles are melted, thereby improving the melting quality.
[0026] (2) The rotomolding box raw material melting device can perform secondary melting of a batch of plastic particles by setting two rectangular melting boxes and melting tanks, thereby further improving the melting quality. Attached Figure Description
[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0029] Figure 2 This is a schematic diagram showing the connection between the first spring and the sieve plate in this utility model;
[0030] Figure 3 This is a schematic diagram showing the connection between the second stirring shaft and the second stirring heating plate of this utility model.
[0031] Reference numerals: 1. Fixed base plate; 2. Support frame; 3. Melting tank; 4. First connecting pipe; 5. Mounting frame; 6. Pulley; 7. Servo motor; 8. First stirring shaft; 9. Second connecting pipe; 10. First feed box; 11. Rectangular trough; 12. Screen plate; 13. Fixed plate; 14. Rectangular feed inlet; 15. Screening box; 16. L-shaped mounting frame; 17. Rectangular melting tank; 18. First spring; 19. Rectangular plate; 20. Second feed box; 21. Second spring; 22. Vibration motor; 23. Concave mounting plate; 24. First stirring heating plate; 25. Second stirring heating plate; 26. Second stirring shaft. Detailed Implementation
[0032] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.
[0034] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0036] Please see Figure 1-3 The present invention provides a technical solution: a rotomolding box raw material melting device includes a fixed base plate 1, two support frames 2 are fixedly connected to the upper surface of the fixed base plate 1, a melting tank 3 is fixedly connected to the upper surface of the two support frames 2, an L-shaped mounting frame 16 is fixedly connected to the upper surface of the fixed base plate 1, and a melting assembly is set on the melting tank 3.
[0037] A screening assembly is provided on an L-shaped mounting frame 16. The screening assembly includes a screening box 15, which is fixedly connected to the front surface of the L-shaped mounting frame 16.
[0038] The screening box 15 has a rectangular groove 11 on its front surface, a rectangular feed inlet 14 on its upper surface, and a rectangular plate 19 on its rear inner wall.
[0039] Two first springs 18 are fixedly connected to the upper surface of the rectangular plate 19, and a sieve plate 12 is fixedly connected to the upper surface of the two first springs 18.
[0040] Furthermore, the front end of the sieve plate 12 extends into the inner wall of the rectangular groove 11 at an inclined position, and two concave mounting plates 23 are fixedly connected to the lower surface of the sieve plate 12.
[0041] Among them, a vibration motor 22 is fixedly connected to the concave part of each of the two concave mounting plates 23, and the output end of each of the two vibration motors 22 is fixedly connected to the sieve plate 12.
[0042] Two second springs 21 are fixedly connected to the lower surface of the sieve plate 12, and both second springs 21 are fixedly connected to the inner wall of the rectangular groove 11.
[0043] Furthermore, a second feed box 20 is fixedly connected inside the screening box 15. The second feed box 20 is located on the lower side of the screen plate 12. Two fixing plates 13 are fixedly connected to the front surface of the screening box 15.
[0044] Among them, the front surfaces of the two fixed plates 13 are fixedly connected to the first feed box 10, and the lower surfaces of the first feed box 10 and the second feed box 20 are fixedly connected to the second connecting pipe 9 that communicates with them.
[0045] Each of the two second connecting pipes 9 is equipped with a first control valve, and the lower end of the rear second connecting pipe 9 extends through the lower surface of the screening box 15.
[0046] Furthermore, the lower ends of the two second connecting pipes 9 are fixedly connected to rectangular melting boxes 17 that communicate with them, and the opposite surfaces of the two rectangular melting boxes 17 are rotatably connected to a first stirring shaft 8.
[0047] The front and rear ends of the first stirring shaft 8 are respectively rotatably inserted into the inner wall of the corresponding rectangular melting box 17 and rotatably connected to the inner wall of the corresponding rectangular melting box 17.
[0048] Furthermore, two sets of first stirring heating plates 24 are fixedly connected to the outer wall of the first stirring shaft 8. Each set of first stirring heating plates 24 consists of multiple first stirring heating plates 24. The front end of the first stirring shaft 8 rotates through the front surface of the rectangular melting box 17 located on the front side.
[0049] Furthermore, the melting assembly includes a mounting frame 5, which is fixedly connected to the front surface of the melting tank 3. A servo motor 7 is fixedly mounted on the upper surface of the mounting frame 5, and a second stirring shaft 26 is fixedly connected to the output end of the servo motor 7.
[0050] Among them, the outer walls of the second stirring shaft 26 and the first stirring shaft 8 are both fixedly fitted with pulleys 6, and the two pulleys 6 are connected together by belt drive. The rear end of the second stirring shaft 26 rotates through the interior of the melting tank 3 and rotates to connect with the inner wall of the melting tank 3.
[0051] Among them, multiple second stirring heating plates 25 are fixedly connected to the outer wall of the second stirring shaft 26, and two first connecting pipes 4 communicating with it are fixedly connected to the upper surface of the melting tank 3, and a second control valve is provided on each of the two first connecting pipes 4.
[0052] The upper ends of the two first connecting pipes 4 respectively penetrate into the interior of the corresponding rectangular melting box 17, and heating devices are provided on the inner walls of both the two rectangular melting boxes 17 and the melting tank 3.
[0053] The rear surface of the melting tank 3 is fixedly connected to a discharge pipe that communicates with it, and a third control valve is installed on the discharge pipe.
[0054] Furthermore, when using the rotomolding box raw material melting device, first start the two vibration motors 22. The two vibration motors 22 drive the screen plate 12 to vibrate rapidly up and down. Then, put the plastic particles to be melted into the inside of the screening box 15 through the rectangular feed port 14. The plastic particles fall onto the upper surface of the screen plate 12 and move forward along the inclined surface of the screen plate 12.
[0055] During the movement of the plastic granules, smaller plastic granules fall through the sieve holes on the sieve plate 12 into the interior of the second feed box 20, while larger plastic granules fall through the inclined surface of the sieve plate 12 into the interior of the first feed box 10, thereby separating the larger and smaller granules in a batch of plastic granules.
[0056] The process involves opening the first control valves on the two second connecting pipes 9 to allow the larger and smaller particles to enter the corresponding rectangular melting tanks 17. Then, the heating devices on the two rectangular melting tanks 17 and the two sets of first stirring heating plates 24 are activated, and the first control valves on the two second connecting pipes 9 are closed. Next, the servo motor 7 is activated, and the servo motor 7 drives the first stirring shaft 8 and the second stirring shaft 26 to rotate via two pulleys 6. The first stirring shaft 8 drives the two sets of first stirring heating plates 24 to rotate, thus stirring and melting the larger and smaller particles respectively. Because the number of smaller plastic particles in a batch is inevitably greater than that of larger plastic particles, the heating and melting times for the two may differ by a certain amount of time. The specific time can be determined according to the actual situation.
[0057] After a certain period of time, the second control valves on the two first connecting pipes 4 are activated. The smaller plastic particles and larger plastic particles that have undergone preliminary melting will enter the interior of the melting tank 3, and then be finally mixed by the second stirring heating plate 25.
[0058] Among them, by setting up a screening component to screen a batch of plastic particles, smaller plastic particles and larger plastic particles are screened out. The smaller plastic particles and larger plastic particles are then melted separately, and finally they are brought together for melting. This can effectively prevent the larger plastic particles from not melting completely when the smaller plastic particles and larger plastic particles are melted, thereby improving the melting quality.
[0059] By setting up two rectangular melting boxes 17 and a melting tank 3, a batch of plastic granules can be melted a second time, further improving the melting quality.
[0060] Working principle: When using the rotomolding box raw material melting device, first start the two vibrating motors 22. The two vibrating motors 22 drive the screen plate 12 to vibrate up and down rapidly. Then, put the plastic granules to be melted into the screening box 15 through the rectangular feed port 14. The plastic granules fall onto the upper surface of the screen plate 12 and move forward along the inclined surface of the screen plate 12.
[0061] During the movement of the plastic granules, smaller plastic granules fall through the sieve holes on the sieve plate 12 into the interior of the second feed box 20, while larger plastic granules fall through the inclined surface of the sieve plate 12 into the interior of the first feed box 10, thereby separating the larger and smaller granules in a batch of plastic granules.
[0062] The process involves opening the first control valves on the two second connecting pipes 9 to allow the larger and smaller particles to enter the corresponding rectangular melting tanks 17. Then, the heating devices on the two rectangular melting tanks 17 and the two sets of first stirring heating plates 24 are activated, and the first control valves on the two second connecting pipes 9 are closed. Next, the servo motor 7 is activated, and the servo motor 7 drives the first stirring shaft 8 and the second stirring shaft 26 to rotate via two pulleys 6. The first stirring shaft 8 drives the two sets of first stirring heating plates 24 to rotate, thus stirring and melting the larger and smaller particles respectively. Because the number of smaller plastic particles in a batch is inevitably greater than that of larger plastic particles, the heating and melting times for the two may differ by a certain amount of time. The specific time can be determined according to the actual situation.
[0063] After a certain period of time, the second control valves on the two first connecting pipes 4 are activated. The smaller plastic particles and larger plastic particles that have undergone preliminary melting will enter the interior of the melting tank 3, and then be finally mixed by the second stirring heating plate 25.
[0064] Among them, by setting up a screening component to screen a batch of plastic particles, smaller plastic particles and larger plastic particles are screened out, and then the smaller plastic particles and larger plastic particles are melted separately, and finally they are brought together for melting. This can effectively prevent the larger plastic particles from not melting completely when the smaller plastic particles and larger plastic particles are melted.
[0065] In this system, two rectangular melting boxes 17 and a melting tank 3 can be set up to allow a batch of plastic granules to be melted a second time.
[0066] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A device for melting raw materials for rotational molding, characterized in that, include: A fixed base plate (1) is fixedly connected to two support frames (2) on the upper surface of the fixed base plate (1), and a melting tank (3) is fixedly connected to the upper surface of the two support frames (2). An L-shaped mounting bracket (16) is fixedly connected to the upper surface of the fixed base plate (1). The melting assembly is set on the melting tank (3); The screening assembly is set on the L-shaped mounting frame (16) and includes a screening box (15) which is fixedly connected to the front surface of the L-shaped mounting frame (16). Among them, the front surface of the screening box (15) is provided with a rectangular groove (11) communicating with it, the upper surface of the screening box (15) is fixedly connected with a rectangular feed port (14) communicating with it, and the rear inner wall of the screening box (15) is fixedly connected with a rectangular plate (19). Among them, two first springs (18) are fixedly connected to the upper surface of the rectangular plate (19), and a sieve plate (12) is fixedly connected to the upper surface of the two first springs (18).
2. The raw material melting device for roto-molding box according to claim 1, characterized in that: The front end of the sieve plate (12) extends into the inner wall of the rectangular groove (11) at an inclined position, and two concave mounting plates (23) are fixedly connected to the lower surface of the sieve plate (12). Among them, the concave parts of the two concave mounting plates (23) are fixedly connected to the vibrating motors (22), and the output ends of the two vibrating motors (22) are fixedly connected to the sieve plate (12); Two second springs (21) are fixedly connected to the lower surface of the sieve plate (12), and both second springs (21) are fixedly connected to the inner wall of the rectangular groove (11).
3. The raw material melting device for roto-molding box according to claim 1, characterized in that: The screening box (15) is fixedly connected to a second feed box (20), which is located on the lower side of the screen plate (12). The front surface of the screening box (15) is fixedly connected to two fixing plates (13). Among them, the front surfaces of the two fixed plates (13) are fixedly connected to the first feed box (10), and the lower surfaces of the first feed box (10) and the second feed box (20) are fixedly connected to the second connecting pipe (9) that communicates with them. Each of the two second connecting pipes (9) is equipped with a first control valve, and the lower end of the rear second connecting pipe (9) extends through the lower surface of the screening box (15).
4. The raw material melting device for roto-molding box according to claim 3, characterized in that: The lower ends of the two second connecting pipes (9) are fixedly connected to rectangular melting boxes (17) that communicate with them, and the opposite surfaces of the two rectangular melting boxes (17) are rotatably connected to a first stirring shaft (8). The front and rear ends of the first stirring shaft (8) are respectively rotated and penetrated into the inner wall of the corresponding rectangular melting box (17), and are rotatably connected to the inner wall of the corresponding rectangular melting box (17).
5. The raw material melting device for roto-molding box according to claim 4, characterized in that: Two sets of first stirring heating plates (24) are fixedly connected to the outer wall of the first stirring shaft (8). Each set of first stirring heating plates (24) consists of multiple first stirring heating plates (24). The front end of the first stirring shaft (8) rotates through the front surface of the rectangular melting box (17) located on the front side.
6. The raw material melting device for roto-molding box according to claim 1, characterized in that: The melting assembly includes a mounting frame (5), which is fixedly connected to the front surface of the melting tank (3). A servo motor (7) is fixedly installed on the upper surface of the mounting frame (5), and a second stirring shaft (26) is fixedly connected to the output end of the servo motor (7). Among them, the outer walls of the second stirring shaft (26) and the first stirring shaft (8) are both fixedly fitted with pulleys (6), and the two pulleys (6) are connected together by belt drive. The rear end of the second stirring shaft (26) rotates through the interior of the melting tank (3) and rotates to connect with the inner wall of the melting tank (3). Among them, the outer wall of the second stirring shaft (26) is fixedly connected with multiple second stirring heating plates (25), and the upper surface of the melting tank (3) is fixedly connected with two first connecting pipes (4) communicating with it. Each of the two first connecting pipes (4) is equipped with a second control valve. Among them, the upper ends of the two first connecting pipes (4) respectively penetrate into the interior of the corresponding rectangular melting box (17), and the inner walls of the two rectangular melting boxes (17) and the melting tank (3) are equipped with heating devices; Among them, the rear surface of the melting tank (3) is fixedly connected to a discharge pipe that communicates with it, and a third control valve is installed on the discharge pipe.