Full-automatic opening and closing mold electric heating roto-molding mold

Abstract

The utility model discloses a kind of electric heating rotational moulding mould of full-automatic opening and closing mould, it is related to hot rotational moulding mould field, including chassis, the top of chassis is erected with mould body, heating wire is installed in the inner wall of mould body, the left side of mould body is provided with matched end cap, the end cap is clamped and fixed on clamping seat, the left side top of top frame is rotatably connected by the clamping seat through pivot, the middle part of end cap is provided with opening, the outside middle part of clamping seat is provided with telescopic structure, and telescopic structure drives plug to carry out plugging to opening.The electric heating rotational moulding mould of full-automatic opening and closing mould, in the use process, take motor drive mechanical structure to drive end cap to open and close, to complete full-automatic mould closing operation, convenient and fast, improve the efficiency of processing, mould internal laying heating wire can be uniformly heated, make model evenly heated, improve telescopic mechanism drive plug to carry out hole sealing, so that mould overall processing quality is high.

Description

Technical Field

[0001] This utility model relates to the field of hot rotational molding technology, specifically to an electrically heated rotational molding mold with fully automatic opening and closing mechanism. Background Technology

[0002] Rotational molding is widely used in the manufacture of products such as water tanks, children's amusement facilities, and kayaks due to its advantages such as the ability to produce large hollow plastic products, low mold costs, and seamless products. However, existing electrically heated rotational molding molds heat the air in the heating chamber by burning natural gas or liquefied petroleum gas. The heated air is then circulated in a certain way by a hot air circulation fan to ensure that the air in the entire heating chamber is hot. The mold, which is moved into the heating chamber, gradually increases its temperature until it reaches the required temperature by absorbing the hot air. This heating method has the problems of low energy utilization and low production efficiency.

[0003] To address the aforementioned deficiencies, existing technology (Chinese patent announcement number CN216658637U, announcement date 2022-06-03) provides an electrically heated rotational molding die. This die, through the installation and arrangement of electric heating wires, achieves uniform heating of different parts of the rotational molding die, quickly and accurately reaching the heating temperature, ensuring stable heating, and thus improving production efficiency and product quality.

[0004] The above solution relies on manual operation using simple machinery and fastening bolts to complete the mold opening and closing operations, resulting in low processing efficiency. In addition, errors in manual operation can lead to incomplete mold closure, material leakage, and waste of raw materials and increased product defect rate. Utility Model Content

[0005] The purpose of this utility model is to provide a fully automatic electric heating rotational molding die for opening and closing, so as to solve the problems mentioned in the background art. The existing electric heating rotational molding dies rely on manual use of simple machinery to assist in the opening and closing of the die with fastening bolts, which results in low processing efficiency. At the same time, errors in manual operation can lead to incomplete die closure, material leakage, and waste of raw materials and increased product defect rate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electrically heated rotational molding mold with fully automatic opening and closing, comprising a base frame, a mold body mounted on the top of the base frame, the right side of the mold body connected to a vertical frame, the vertical frame mounted on the top right side of the base frame, a top frame mounted on the top of the vertical frame, and a support frame for stabilizing the mold body provided in the middle of the top surface of the base frame.

[0007] A heating wire is installed in the inner wall of the mold body. A matching end cap is provided on the left side of the mold body. The end cap is clamped and fixed on the clamping seat. The clamping seat is rotatably connected to the top left side of the top frame through a rotating shaft. An opening is provided in the middle of the end cap. A telescopic structure is provided in the middle of the outer side of the clamping seat. The telescopic structure drives the plug to seal the opening.

[0008] Preferably, the mold body is configured as a cylindrical structure, and the left end cap of the mold body is configured as a hemispherical structure.

[0009] Preferably, a motor is installed on the rear left side of the top frame, the output end of the motor is connected to a gear ring, the gear ring is fixed to the top of the clamping seat, and the outer side of the gear ring is meshed with a first sector gear, which is fixed to the rear left side of the top frame.

[0010] Preferably, the clamping seat drives the end cover to form a rotating structure through the toothed ring and the first sector gear, and the end cover forms an automatic opening and closing mold structure between the clamping seat and the mold body.

[0011] Preferably, a positioning frame is provided at the left end of the base frame. The positioning frame is divided into upper and lower parts, which are fixedly connected to the base frame and the top frame, respectively. Pneumatic clamps are symmetrically installed on the positioning frame, and clamping plates are fixed at the ends of the pneumatic clamps. After the mold is closed, the clamping plates assist in closing the joint between the end cap and the mold body.

[0012] Preferably, the telescopic structure includes a connecting frame installed on the outside of the clamping seat, a first connecting rod symmetrically rotatably connected to the connecting frame, the top of the first connecting rod rotatably connected to the connecting frame, a second connecting rod symmetrically rotatably connected to the connecting frame, the first connecting rod and the second connecting rod being distributed in a "V" shape, and two sets of the first connecting rod and the second connecting rod being provided, the top of each set being connected to the connecting frame through a second sector gear that meshes with each other.

[0013] Preferably, a cylinder is provided on the outer side of the second connecting rod, the cylinder is fixedly connected to the outer side of the outer second connecting rod, the output end of the cylinder is fixedly connected to the outer side of the inner first connecting rod, and plugs are rotatably connected to the bottom of the two second connecting rods.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This fully automatic opening and closing electric heating rotational molding mold uses a motor-driven mechanical structure to open and close the end caps during use, thus completing the fully automatic mold closing operation. It is convenient, fast, and improves processing efficiency. The heating wires inside the mold can provide uniform heating, ensuring that the model is heated evenly. The telescopic mechanism drives the plug to seal the hole, resulting in high overall mold processing quality.

[0016] Furthermore, the base frame provides support for the mold body, the upright frame positions and fixes the mold body, and the outer side of the upright frame is equipped with a drive component to drive the mold body to rotate. The support frame between the top frame and the base frame can strengthen the support of the middle part of the mold body to maintain the stability of the mold body. The heating wire inside the mold body can make the heat evenly distributed and improve the quality of processing and molding. The clamping seat drives the end cap to rotate through the rotating shaft. When unfolded, it is convenient to add material. When closed, it can be used for mold closing and rotational molding of the product. The telescopic mechanism drives the end cap to move, thereby sealing the opening on the end cap.

[0017] Furthermore, after the motor starts, it drives the gear ring to rotate. After the gear ring rotates, it moves along the outside of the first sector gear, which in turn drives the clamping seat to rotate around the shaft. After the clamping seat rotates, the end cover and the mold body will close, forming a complete mold cavity and completing the automatic mold closing operation. When opening the mold later, the motor drives the gear ring to rotate in reverse, and then the mold opening operation can be performed. This makes the mold opening and closing operation convenient and fast, which can improve processing efficiency.

[0018] Furthermore, after the cylinder is started, the output end of the cylinder will be extended, which will cause the outer second connecting rod to rotate inward, thereby reducing the included angle between the first connecting rod and the second connecting rod. The second sector gear will rotate relative to each other, so that the two sets of first connecting rods and second connecting rods open and close synchronously, thereby driving the plug to be inserted into the opening in the end cover, sealing the opening, so that the mold body and the inside of the end cover form a sealed mold cavity, which is convenient for rotational molding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0020] Figure 2 This is a schematic diagram of the mold body and heating wire distribution structure of this utility model;

[0021] Figure 3 This is a side view of the connection structure of the top frame, rotating shaft and clamping seat of this utility model;

[0022] Figure 4 This is a side view of the toothed ring, the first sector plate, and the clamping seat of this utility model.

[0023] Figure 5 This is a side view of the positioning frame, pneumatic clamp, and clamping plate of this utility model.

[0024] Figure 6 This is a schematic diagram of the front section of the sealing component of this utility model.

[0025] In the diagram: 1. Base frame; 2. Vertical frame; 3. Top frame; 4. Mold body; 5. Support frame; 6. Rotating shaft; 7. Clamping seat; 8. End cap; 9. Heating wire; 10. Motor; 11. Gear ring; 12. First sector gear; 13. Connecting frame; 14. First connecting rod; 15. Connecting frame; 16. Second sector gear; 17. Second connecting rod; 18. Cylinder; 19. Plug; 20. Positioning frame; 21. Pneumatic clamp; 22. Clamping plate. Detailed Implementation

[0026] 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.

[0027] Example 1: Please refer to Figures 1-2 The present invention provides the following technical solution: an electrically heated rotational molding mold with fully automatic opening and closing, comprising a base frame 1, a mold body 4 mounted on the top of the base frame 1, the right side of the mold body 4 being connected to a vertical frame 2, the vertical frame 2 being mounted on the top right side of the base frame 1, a top frame 3 being mounted on the top of the vertical frame 2, a support frame 5 being provided in the middle of the top surface of the base frame 1 to assist in supporting and stabilizing the mold body 4, a heating wire 9 being installed in the inner wall of the mold body 4, a matching end cap 8 being provided on the left side of the mold body 4, the end cap 8 being clamped and fixed on a clamping seat 7, the clamping seat 7 being rotatably connected to the top left side of the top frame 3 via a rotating shaft 6, an opening being provided in the middle of the end cap 8, a telescopic structure being provided in the middle of the outer side of the clamping seat 7, and the telescopic mechanism driving a plug 19 to seal the opening.

[0028] During use, the base frame 1 provides support for the mold body 4, the upright frame 2 positions and fixes the mold body 4, and the outer side of the upright frame 2 is provided with a drive component to drive the mold body 4 to rotate. The support frame 5 between the top frame 3 and the base frame 1 can strengthen the support of the middle part of the mold body 4 to maintain the stability of the mold body 4. The heating wire 9 inside the mold body 4 can make the heat evenly distributed and improve the quality of processing and molding. The clamping seat 7 drives the end cover 8 to rotate through the rotating shaft 6. After unfolding, it is convenient to add material. After closing, it can be used for mold closing and rotational molding of the product. The telescopic mechanism drives the plug 19 to move, thereby sealing the opening on the end cover 8.

[0029] Example 2:

[0030] Based on Embodiment 1, a gear ring 11 and a first sector gear 12 are also disclosed. Please refer to [reference needed]. Figure 1 and Figures 3-4As shown, its specific structure is as follows: the mold body 4 is set as a cylindrical structure, the left end cover 8 of the mold body 4 is set as a hemispherical structure, the motor 10 is installed on the rear left side of the top frame 3, the output end of the motor 10 is connected to the gear ring 11, the gear ring 11 is fixed to the top of the clamping seat 7, the outer side of the gear ring 11 is meshed with the first sector gear 12, the first sector gear 12 is fixed to the rear left side of the top frame 3, the clamping seat 7 drives the end cover 8 to form a rotating structure through the gear ring 11 and the first sector gear 12, and the end cover 8 forms an automatic mold opening and closing structure between the clamping seat 7 and the mold body 4.

[0031] During use, after the motor 10 starts, it drives the gear ring 11 to rotate. After the gear ring 11 rotates, it moves along the outside of the first sector gear 12, thereby driving the clamping seat 7 to rotate around the rotating shaft 6. After the clamping seat 7 rotates, the end cover 8 and the mold body 4 will close, forming a complete mold cavity and completing the automatic mold closing operation. When opening the mold later, the motor 10 drives the gear ring 11 to rotate in reverse, and then the mold opening operation can be performed. This makes the mold opening and closing operation convenient and fast, and improves processing efficiency.

[0032] Example 3:

[0033] Based on Embodiment 2, a pneumatic clamp 21 and a clamping plate 22 are also disclosed. Please refer to [link / reference]. Figure 1 , Figure 3 and Figure 5 As shown, its specific structure is as follows: A positioning frame 20 is provided at the left end of the base frame 1. The positioning frame 20 is divided into upper and lower parts. The upper and lower parts of the positioning frame 20 are fixedly connected to the base frame 1 and the top frame 3 respectively. Pneumatic clamps 21 are symmetrically installed on the positioning frame 20. A clamping plate 22 is fixed at the end of the pneumatic clamp 21. After the mold is closed, the clamping plate 22 assists in closing the joint between the end cover 8 and the mold body 4.

[0034] During use, after the pneumatic clamp 21 drives the clamping plate 22 to move relative to each other, it will close the joint between the end cap 8 and the mold body 4, further improving the stability of the joint. When the mold is rotated, the clamping plate 22 can keep the end cap 8 and the mold body 4 closed, while the end cap 8 and the mold body 4 can rotate in the clamping plate 22.

[0035] Example 4:

[0036] Based on Embodiment 3, a first connecting rod 14, a second sector gear 16, and a second connecting rod 17 are also disclosed. Please refer to [reference needed]. Figure 1 , Figure 3 and Figure 6As shown, its specific structure is as follows: The telescopic structure includes a connecting frame 13 installed on the outside of the clamping seat 7. A first connecting rod 14 is symmetrically rotatably connected to the connecting frame 13. The top of the first connecting rod 14 is rotatably connected to the connecting frame 15. A second connecting rod 17 is symmetrically rotatably connected to the connecting frame 15. The first connecting rod 14 and the second connecting rod 17 are distributed in a "V" shape. There are two sets of the first connecting rod 14 and the second connecting rod 17. The top of each set is connected to the connecting frame 15 through a second sector gear 16 that meshes with each other. A cylinder 18 is provided on the outside of the second connecting rod 17. The cylinder 18 is fixedly connected to the outside of the outer second connecting rod 17. The output end of the cylinder 18 is fixedly connected to the outside of the inner first connecting rod 14. A plug 19 is rotatably connected to the bottom of the two second connecting rods 17.

[0037] During use, after the cylinder 18 is started, the output end of the cylinder 18 will be extended, which will cause the outer second connecting rod 17 to rotate inward, thereby reducing the included angle between the first connecting rod 14 and the second connecting rod 17. The second sector gear 16 will rotate relative to each other, so that the two sets of first connecting rods 14 and second connecting rods 17 open and close synchronously, thereby driving the plug 19 to be inserted into the opening in the end cover 8 to seal the opening, so that the mold body 4 and the end cover 8 form a closed mold cavity, which is convenient for rotational molding.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electrically heated rotational molding mold with fully automatic opening and closing, comprising a base frame (1), a mold body (4) is mounted on the top of the base frame (1), the right side of the mold body (4) is connected to a vertical frame (2), the vertical frame (2) is installed on the top right side of the base frame (1), a top frame (3) is installed on the top of the vertical frame (2), and a support frame (5) is provided in the middle of the top surface of the base frame (1) to help stabilize the mold body (4). characterized in that A heating wire (9) is installed in the inner wall of the mold body (4). A matching end cap (8) is provided on the left side of the mold body (4). The end cap (8) is clamped and fixed on the clamping seat (7). The clamping seat (7) is rotatably connected to the top left side of the top frame (3) through a rotating shaft (6). An opening is provided in the middle of the end cap (8). A telescopic structure is provided in the middle of the outer side of the clamping seat (7). The telescopic structure drives the plug (19) to seal the opening.

2. The electrically heated rotational molding die for fully automatic opening and closing as described in claim 1, characterized in that: The mold body (4) is configured as a cylindrical structure, and the left end cap (8) of the mold body (4) is configured as a hemispherical structure.

3. The electrically heated rotational molding die for fully automatic opening and closing as described in claim 2, characterized in that: A motor (10) is installed on the rear left side of the top frame (3). The output end of the motor (10) is connected to a gear ring (11). The gear ring (11) is fixed to the top of the clamping seat (7). The outer side of the gear ring (11) is meshed with a first sector gear (12). The first sector gear (12) is fixed to the rear left side of the top frame (3).

4. The electrically heated rotational molding die for fully automatic opening and closing as described in claim 3, characterized in that: The clamping seat (7) drives the end cover (8) to form a rotating structure through the toothed ring (11) and the first sector gear (12). The end cover (8) forms an automatic opening and closing mold structure with the mold body (4) through the clamping seat (7).

5. The electrically heated rotational molding die for fully automatic opening and closing as described in claim 4, characterized in that: A positioning frame (20) is provided at the left end of the base frame (1). The positioning frame (20) is divided into upper and lower parts. The upper and lower parts of the positioning frame (20) are fixedly connected to the base frame (1) and the top frame (3) respectively. Pneumatic clamps (21) are symmetrically installed on the positioning frame (20). A clamping plate (22) is fixed at the end of the pneumatic clamp (21). After the mold is closed, the clamping plate (22) assists in closing the joint between the end cover (8) and the mold body (4).

6. The electrically heated rotational molding die for fully automatic opening and closing as described in claim 5, characterized in that: The telescopic structure includes a connecting frame (13) installed on the outside of the clamping seat (7). A first connecting rod (14) is symmetrically rotatably connected to the connecting frame (13). The top of the first connecting rod (14) is rotatably connected to the connecting frame (15). A second connecting rod (17) is symmetrically rotatably connected to the connecting frame (15). The first connecting rod (14) and the second connecting rod (17) are distributed in a "V" shape. The first connecting rod (14) and the second connecting rod (17) are provided in two sets. The top of each set is connected to the connecting frame (15) through a second sector gear (16) that meshes with each other.

7. The electrically heated rotational molding die for fully automatic opening and closing as described in claim 6, characterized in that: A cylinder (18) is provided on the outside of the second connecting rod (17). The cylinder (18) is fixedly connected to the outside of the outer second connecting rod (17). The output end of the cylinder (18) is fixedly connected to the outside of the inner first connecting rod (14). A plug (19) is rotatably connected to the bottom of the two second connecting rods (17).

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