Rotational molding machine
By using hot water insulation and cold water uniform cooling technology in the rotomolding machine, the problems of heat loss and uneven cooling of existing rotomolding machines are solved, and the molding effect and mold release rate are improved.
Patent Information
- Application Number
- CN202323428203.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-15
AI Technical Summary
When the existing rotomolding machines are transported through the conduit after heating, the plastic raw materials are easily contacted with air and cause heat loss, which affects the molding effect, and the cooling device cannot cool evenly, resulting in difficult demolding and long-term problems.
A rotomolding machine is designed. By setting up a water pipe and an electric heating rod in the rotomolding device, it uses hot water to prevent heat loss, and uses cold water to cool it in all directions and uniformly, and uses the driving motor and sliding structure to achieve heat. Quick drain and injection of water and cold water.
Effectively prevent heat loss, improve molding effect, and shorten the demolding time through uniform cooling, and improve production efficiency.
Smart Images
Figure CN222270996U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotomolding machines, in particular to a rotomolding machine. Background Art
[0002] Roto-molding is a plastic product molding process, also known as rotational molding, rotational molding or rotational molding. It is mainly used to produce hollow plastic products, such as barrels, basins, bottles, cans, etc. The roto-molding machine consists of a frame, a roto-molding mold, a heating device, a cooling device and a control system. During the roto-molding process, the plastic raw material is heated and softened, and then fed into the mold. The mold gradually wraps the plastic raw material in the rotation process and forms the desired shape. Finally, the plastic product is obtained after cooling and demoulding. Roto-molding machines have the advantages of high production efficiency, low cost and wide application range, so they are widely used in the production of plastic products. At the same time, roto-molding machines can also produce plastic products of various shapes and specifications to meet the needs of different fields.
[0003] However, when the existing rotomolding machine is in use, the heated raw materials are input into the rotomolding mold through the conduit, and the raw materials are transported through the conduit, which may cause the raw materials to contact with the air, resulting in serious heat loss, which will cause the raw materials to cool down, thereby resulting in poor demolding effect of the rotomolded products. In addition, the cooling device of the existing rotomolding machine cannot evenly cool the entire rotomolding mold, resulting in some areas not being completely cooled, making it impossible to demold and requiring more time to cool. Therefore, in view of the above technical problems, a rotomolding machine is proposed herein. Utility Model Content
[0004] The utility model aims to provide a rotomolding machine, which can heat and insulate the material input into the rotomolding mold to prevent the heat loss from affecting the rotomolding effect. Secondly, after the rotomolding is completed, the entire rotomolding mold can be evenly cooled to improve the demoulding efficiency.
[0005] The utility model is realized by the following technical solutions:
[0006] A rotomolding machine comprises a device body and a rotomolding device, wherein an input pipe for introducing heated plastic material into the interior is fixedly connected to the outside of the rotomolding device, a water pipe is fixedly connected to the inner top of the device body, a connecting pipe is fixedly connected to the outside of the water pipe, a through hole is opened on the outside of the water pipe, an electric connection plate is fixedly connected to the outside of the device body, an electric heating rod is fixedly connected to one side of the electric connection plate, and the electric heating rod is located at the inner bottom of the device body, a drainage groove is opened on the other side of the device body, two groups of symmetrically arranged slide rails are fixedly connected to the outside of the device body, and the drainage groove is located between the two groups of symmetrically arranged slide rails, a barrier strip is slidably connected to the inside of the slide rail, a fixed plate is fixedly connected to the outside of the device body, and the fixed plate is located above the barrier strip, a spring is fixedly connected between the barrier strip and the fixed plate, a handle is fixedly connected to the upper side of the barrier strip, and the handle is slidably connected to the fixed plate.
[0007] The outside of the device body is fixedly connected to a driving motor, one side of the driving motor is fixedly connected to a rotating rod, and the rotating rod is rotatably connected to the device body and the rotational molding device. The rotational molding device contains a rotational molding mold and is fixedly connected to the rotating rod.
[0008] The outside of the rotational molding device is slidably connected with a cover plate.
[0009] A heating box is placed on one side of the device body, a feed pipe is fixedly connected to the upper side of the heating box, heating devices are symmetrically arranged on the inner wall of the heating box, a feed pump is fixedly connected to the inner bottom of the heating box, and the feed pump is connected to the input pipe.
[0010] The through holes are in a plurality of groups and arranged in a transverse direction.
[0011] The number of the electric heating rods is several groups and they are arranged in a transverse direction.
[0012] The springs are in several groups and are arranged symmetrically.
[0013] The technical solution of the utility model has at least the following beneficial effects:
[0014] The utility model provides a rotomolding machine that can soak the heated plastic raw materials in hot water to keep them warm when the heated plastic raw materials are introduced into a rotomolding device for rotational molding, so as to prevent heat loss from causing poor molding effects. Meanwhile, after the mold inside the rotomolding device is formed, the hot water can be easily discharged, and cold water can be introduced into the device body to soak it in cold water, so as to achieve all-round uniform and efficient cooling, which can not only improve the demoulding effect, but also accelerate the demoulding rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a second overall structural schematic diagram of the utility model;
[0017] Figure 3 for Figure 2 A magnified view of middle;
[0018] Figure 4 for Figure 1 Enlarged view of middle B;
[0019] Figure 5 This is a third overall structural schematic diagram of the utility model;
[0020] Figure 6 It is a partial structural schematic diagram of the utility model;
[0021] Figure 7 for Figure 6 Enlarged view of middle C;
[0022] Figure 8 for Figure 1 Enlarged view of middle D;
[0023] Fig. 9 It is a front cross-sectional view of a local structure of the utility model;
[0024] Icons: 1. Device body; 2. Driving motor; 3. Rotating rod; 4. Rotomolding device; 5. Cover plate; 6. Input pipe; 7. Water pipe; 8. Connecting pipe; 9. Through hole; 10. Electrical connection plate; 11. Electric heating rod; 12. Drain trough; 13. Slide rail; 14. Barrier strip; 15. Fixed plate; 16. Spring; 17. Handle; 18. Heating box; 19. Feed pipe; 20. Heating device; 21. Feed pump. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] See also Figure 1-9The utility model provides a rotomolding machine, comprising a device body 1 and a rotomolding device 4, wherein the rotomolding device 4 is provided with a rotomolding mold, the outside of the rotomolding device 4 is fixedly connected with an input pipe 6 for introducing heated plastic material into the inside, a water pipe 7 is fixedly connected with the top of the inner side of the device body 1, the outside of the water pipe 7 is fixedly connected with a connecting pipe 8, the connecting pipe 8 can be connected to an external water pump, a through hole 9 is provided on the outside of the water pipe 7, an electric connection plate 10 is fixedly connected with the outside of the device body 1, a heating rod 11 is fixedly connected with one side of the electric connection plate 10, the electric connection plate 10 can make the heating rod 11 energized and heated, and the electric The heat rod 11 is located at the inner bottom of the device body 1, and a drainage groove 12 is opened on the other side of the device body 1. The outside of the device body 1 is fixedly connected with two groups of symmetrically arranged slide rails 13, and the drainage groove 12 is located between the two groups of symmetrically arranged slide rails 13. The inside of the slide rail 13 is slidably connected with a barrier strip 14. The outside of the device body 1 is fixedly connected with a fixed plate 15, and the fixed plate 15 is located above the barrier strip 14. A spring 16 is fixedly connected between the barrier strip 14 and the fixed plate 15. A handle 17 is fixedly connected to the upper side of the barrier strip 14, and the handle 17 is slidably connected to the fixed plate 15.
[0027] The outside of the device body 1 is fixedly connected to a driving motor 2, one side of the driving motor 2 is fixedly connected to a rotating rod 3, and the rotating rod 3 is rotatably connected to the device body 1 and the rotational molding device 4. The rotational molding device 4 contains a rotational molding mold and is fixedly connected to the rotating rod 3.
[0028] The outside of the rotational molding device 4 is slidably connected with a cover plate 5, through which the finished product after demoulding can be taken out.
[0029] A heating box 18 is placed on one side of the device body 1, a feed pipe 19 is fixedly connected to the upper side of the heating box 18, a heating device 20 is symmetrically arranged on the inner wall of the heating box 18, a feed pump 21 is fixedly connected to the inner bottom of the heating box 18, and the feed pump 21 is connected to the input pipe 6.
[0030] The through holes 9 are arranged in a transverse arrangement in a plurality of groups. The transverse arrangement of the through holes 9 is designed to allow the rotational molding device to be evenly cooled when cold water is passed through it.
[0031] The number of the electric heating rods 11 is several groups and they are arranged in a transverse direction.
[0032] The springs 16 are arranged in several groups and are symmetrical. The springs 16 provide elastic force for the barrier strip so that the barrier strip can fully block the water flow.
[0033] The working principle of a rotomolding machine according to the embodiment is that before the device is used, the plastic raw material can be added into the heating box 18 through the feed pipe 19, and heated and softened by the heating device 20, and then connected to the external water pump through the connecting pipe 8, and the clean water is passed into the device body 1 through the through hole 9 outside the water pipe 7, and the electric heating rod 11 is powered on to heat, so that the inside of the device body 1 can be filled with hot water, and then it is passed into the rotomolding mold inside the rotomolding device 4 through the feed pump 21, and then the driving motor 2 is operated to rotate and rotate the internal rotomolding mold. At the same time, the plastic raw materials can be immersed in hot water for insulation to prevent heat loss from causing poor molding effect. At the same time, after the mold is formed inside the rotational molding device 4, the electric heating rod 11 is stopped and the handle 17 is pulled to make the barrier strip 14 slide in the slide rail 13, so that the hot water inside the device body 1 can be discharged through the drainage groove 12, and then cold water is introduced into the device body 1 through the connecting pipe 8, and the injection molding device is immersed in the cold water inside the device body 1, so that all-round uniform and efficient cooling can be achieved, which can not only improve the demoulding effect, but also accelerate the demoulding rate.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A rotational molding machine, characterized in that: The invention comprises a device body (1) and a rotational molding device (4), wherein the rotational molding device (4) is fixedly connected to an input pipe (6) for introducing heated plastic material into the interior of the device body (4), a water pipe (7) is fixedly connected to the top of the inner side of the device body (1), a connecting pipe (8) is fixedly connected to the outside of the water pipe (7), a through hole (9) is provided on the outside of the water pipe (7), an electric connection plate (10) is fixedly connected to the outside of the device body (1), an electric heating rod (11) is fixedly connected to one side of the electric connection plate (10), and the electric heating rod (11) is located at the inner bottom of the device body (1), and the other side of the device body (1) is opened. A drainage groove (12) is provided, the outside of the device body (1) is fixedly connected to two groups of symmetrically arranged slide rails (13), and the drainage groove (12) is located between the two groups of symmetrically arranged slide rails (13), the inside of the slide rail (13) is slidably connected to a barrier strip (14), the outside of the device body (1) is fixedly connected to a fixed plate (15), and the fixed plate (15) is located above the barrier strip (14), a spring (16) is fixedly connected between the barrier strip (14) and the fixed plate (15), and a handle (17) is fixedly connected to the upper side of the barrier strip (14), and the handle (17) is slidably connected to the fixed plate (15).
2. A rotomolding machine according to claim 1, characterized in that: The outside of the device body (1) is fixedly connected to a driving motor (2), one side of the driving motor (2) is fixedly connected to a rotating rod (3), and the rotating rod (3) is rotatably connected to the device body (1) and the rotational molding device (4), and the rotational molding device (4) contains a rotational molding mold and is fixedly connected to the rotating rod (3).
3. A rotomolding machine according to claim 1, characterized in that: The outside of the rotational molding device (4) is slidably connected with a cover plate (5).
4. A rotomolding machine according to claim 1, characterized in that: A heating box (18) is placed on one side of the device body (1), a feed pipe (19) is fixedly connected to the upper side of the heating box (18), a heating device (20) is symmetrically arranged on the inner wall of the heating box (18), a feed pump (21) is fixedly connected to the inner bottom of the heating box (18), and the feed pump (21) is connected to the input pipe (6).
5. A rotomolding machine according to claim 1, characterized in that: The through holes (9) are provided in a plurality of groups and are arranged in a transverse direction.
6. A rotomolding machine according to claim 1, characterized in that: The number of the electric heating rods (11) is several groups and they are arranged in a transverse manner.
7. A rotomolding machine according to claim 1, characterized in that: The springs (16) are provided in a plurality of groups and are arranged symmetrically.