A high-efficiency rotational molding device

Abstract

This invention relates to the field of yoga ball molding equipment technology, and more particularly to a high-efficiency rotational molding device. The technical problem is that when the rotational molding mold rotates, the resin-based plastic liquid impacts the nozzle, causing the nozzle to easily fall off during the rotational molding process. Furthermore, the initially formed yoga ball adheres tightly to the bottom mold, making it difficult to peel the yoga ball off, resulting in poor production efficiency for yoga balls using the rotational molding device. A high-efficiency rotational molding device includes a heating furnace, a rotating seat rotatably connected to the heating furnace, and a geared motor fixedly connected to the heating furnace. The output shaft of the geared motor is fixedly connected to the rotating seat. When the top mold is closed, two sliding blocks with slotted grooves abut against the inner wall of the nozzle, thereby better securing the nozzle without affecting its assembly or disassembly, making it less likely to fall off during the rotational molding process, thus enhancing the stability of yoga ball production.

Description

Technical Field

[0001] This invention relates to the field of yoga ball molding equipment technology, and in particular to a high-efficiency rotational molding device. Background Technology

[0002] Yoga balls are inflatable elastic devices widely used in fitness and other fields. They are usually made of polymer materials such as PVC. The production process requires first installing a ball nozzle and injecting molten plastic into the bottom mold of a rotational molding die. Then, the rotational molding die is heated and rotated to make the molten plastic evenly adhere to the inner wall of the die to form a hollow structure. Next, the rotational molding die is cooled to allow the yoga ball inside to initially take shape. Finally, the initially shaped yoga ball is removed from the bottom mold of the rotational molding die and sent to the shaping process, thus completing the production of the yoga ball.

[0003] Because the molten plastic impacts the nozzle during rotational molding, current rotational molding equipment struggles to secure the nozzle properly without hindering its disassembly and assembly during yoga ball production. This leads to the nozzle easily falling off during the rotational molding process. Furthermore, the initially formed yoga ball adheres tightly to the base mold, and current rotational molding equipment does not allow the yoga ball to shrink and reduce contact with the base mold during production, making it difficult to peel the yoga ball off. Consequently, the rotational molding equipment produces yoga balls with poor efficiency. Summary of the Invention

[0004] To overcome the above-mentioned shortcomings, the present invention provides a high-efficiency rotational molding device that can better fix the nozzle without affecting the disassembly and assembly of the nozzle, making it less likely to fall off during the rotational molding process, and allows the yoga ball to shrink and reduce its contact with the bottom mold, making it easier to peel the yoga ball off the bottom mold, thereby enhancing the production effect of the rotational molding device on yoga balls.

[0005] The technical solution is as follows: A high-efficiency rotational molding device includes a heating furnace, a rotating seat rotatably connected to the heating furnace, a geared motor fixedly connected to the heating furnace, the output shaft of the geared motor fixedly connected to the rotating seat, a molding mechanism on the rotating seat, a driving mechanism on the rotating seat, and a rotation mechanism on the rotating seat.

[0006] Preferably, the molding mechanism includes a rotating frame rotatably connected to a rotating base, a bottom mold rotatably connected to the rotating frame, airflow channels in both the bottom mold and the rotating frame, the airflow channel of the bottom mold communicating with the airflow channel of the rotating frame, a top mold hinged to the bottom mold, a snap-fit ​​at the top of the top mold, a ball nozzle mounting seat fixedly connected inside the bottom mold, an opening at the bottom of the ball nozzle mounting seat communicating with the airflow channel of the bottom mold, and a screw rotatably connected to the bottom mold, with a nut threaded onto the screw.

[0007] Preferably, the drive mechanism includes a servo motor, which is fixed to the bottom of the rotating base. A first gear is fixed to the output shaft of the servo motor, and a first gear ring is fixed to the bottom of the rotating frame. The first gear meshes with the first gear ring.

[0008] Preferably, the self-rotating mechanism includes a second gear ring, which is fixedly connected to the rotating seat. A support shell is fixedly connected to the rotating frame. A worm gear is rotatably connected inside the support shell. A worm wheel is fixedly connected to the bottom mold and meshes with the worm gear. A second gear is fixedly connected to the bottom end of the worm gear and meshes with the second gear ring.

[0009] Preferably, a fixing mechanism is also included, which is mounted on the ball nozzle mounting base. The fixing mechanism includes a lifting column, which is slidably connected to the ball nozzle mounting base. The lifting column has a hollow structure, and both the upper and lower parts of the lifting column have ventilation holes communicating with the interior of the hollow structure. A connecting frame is fixedly connected to the bottom mold, and six limit wheels are rotatably connected to the connecting frame. Each pair of limit wheels that are close to each other forms a group. A cam is fixedly connected to the top mold. A guide sleeve is fixedly connected to the bottom of the ball nozzle mounting base, and a guide frame is slidably connected to the guide sleeve. The guide frame has two guide grooves, and the two guide grooves of the guide frame are slidably connected to the bottom of the lifting column. A tension spring is connected between the guide frame and the guide sleeve. A steel wire rope is connected between the top mold and the guide frame. The steel wire rope passes through three groups of limit wheels. Two sliding blocks are slidably connected to the middle of the ball nozzle mounting base. Each of the two sliding blocks has two inclined grooves, and the inclined grooves of the two sliding blocks are slidably connected to the lifting column.

[0010] Preferably, both sliding blocks have several strip grooves.

[0011] Preferably, the system also includes a stripping mechanism mounted on a heating furnace. The stripping mechanism includes a piston tube fixedly connected to the heating furnace. A piston rod is slidably connected inside the piston tube. The piston rod has a hollow structure and communicates with the interior of the piston tube. The piston rod is fixedly connected to a rotating seat. A docking frame is fixedly connected to the bottom of the rotating seat and is rotatably connected to the rotating seat. The airflow channels of the docking frame and the rotating seat are connected. A connecting pipe connects the docking frame and the piston rod, and the connecting pipe communicates with both the piston rod and the docking frame. A first one-way valve is installed inside the piston tube, and a second one-way valve is installed inside the piston rod.

[0012] Preferably, the system also includes a spray frame, which is fixed to the heating furnace, and spray nozzles are provided on both ends of the spray frame near the top mold.

[0013] The beneficial effects of the present invention are: 1. While the rotating seat drives the top mold and bottom mold into the heating furnace, the rotating frame drives the bottom mold and top mold to rotate and allows the top mold and bottom mold to rotate on their own. Thus, while heating, the top mold and bottom mold are rotated in multiple dimensions, making the yoga ball more uniformly formed, thereby enhancing the production effect of the rotational molding device on the yoga ball.

[0014] 2. When the top mold is closed, two sliding blocks with slotted grooves abut against the inner wall of the nozzle, thereby better fixing the nozzle without affecting its disassembly and assembly. This makes the nozzle less likely to fall off during rotational molding, thus enhancing the stability of yoga ball production.

[0015] 3. By simultaneously extracting some air from the yoga ball when opening the top mold, the yoga ball shrinks and reduces its contact with the bottom mold, making it easier to peel the yoga ball off the bottom mold, thereby improving the production efficiency of the rotational molding device for yoga balls. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the molding mechanism of the present invention.

[0019] Figure 4 This is a cross-sectional three-dimensional structural schematic diagram of the molding mechanism of the present invention.

[0020] Figure 5 This is a partial three-dimensional structural schematic diagram of the molding mechanism of the present invention.

[0021] Figure 6 This is a three-dimensional structural diagram of the driving mechanism of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the self-rotating mechanism of the present invention.

[0023] Figure 8 This is a cross-sectional three-dimensional structural diagram of the rotation mechanism of the present invention.

[0024] Figure 9 This is a three-dimensional structural diagram of the fixing mechanism of the present invention.

[0025] Figure 10 This is a partial cross-sectional three-dimensional structural schematic diagram of the fixing mechanism of the present invention.

[0026] Figure 11 This is a schematic diagram of the disassembled three-dimensional structure of the fixing mechanism of the present invention.

[0027] Figure 12 This is a three-dimensional structural diagram of the peeling mechanism of the present invention.

[0028] Figure 13 This is a cross-sectional three-dimensional structural diagram of the peeling mechanism of the present invention.

[0029] Figure 14 For the present invention Figure 13 A magnified three-dimensional structural diagram of A in the middle.

[0030] Figure 15 This is a schematic diagram of the partial splitting three-dimensional structure of the peeling mechanism of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 1_Heating furnace, 2_Rotating seat, 3_Gear motor, 4_Forming mechanism, 41_Rotating frame, 42_Bottom mold, 43_Top mold, 44_Ball nozzle mounting seat, 45_Screw, 46_Nut, 5_Drive mechanism, 51_Servo motor, 52_First gear, 53_First gear ring, 6_Rotation mechanism, 61_Second gear ring, 62_Support shell, 63_Worm, 64_Worm wheel, 65_Second gear, 7_Fixing mechanism, 71_Lifting column, 72_Connecting frame, 721_Limiting wheel, 722_Wire rope, 723_Cam, 73_Guide sleeve, 74_Guide frame, 75_Tension spring, 76_Sliding block, 8_Peeling mechanism, 81_Piston tube, 82_Piston rod, 83_Connecting pipe, 84_Dating frame, 85_First one-way valve, 86_Second one-way valve, 9_Spraying frame. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: A high-efficiency rotational molding device, such as Figures 1-15 As shown, it includes a heating furnace 1, a rotating seat 2 rotatably connected to the heating furnace 1, a geared motor 3 connected to the heating furnace 1 by bolts, the output shaft of the geared motor 3 being connected to the rotating seat 2 by a keyway, a forming mechanism 4 being provided on the rotating seat 2, a driving mechanism 5 being provided on the rotating seat 2, and a self-rotation mechanism 6 being provided on the rotating seat 2.

[0034] The forming mechanism 4 includes a rotating frame 41, which is rotatably connected to a rotating base 2. A bottom mold 42 is rotatably connected to the rotating frame 41. Both the bottom mold 42 and the rotating frame 41 are provided with airflow channels. The airflow channel of the bottom mold 42 is connected to the airflow channel of the rotating frame 41. A top mold 43 is hinged to the bottom mold 42. The top of the top mold 43 is provided with a snap-fit. A heating furnace 1 is used to heat the bottom mold 42 and the top mold 43. A ball nozzle mounting seat 44 is welded inside the bottom mold 42. The ball nozzle mounting seat 44 has an opening at the bottom and is connected to the airflow channel of the bottom mold 42. The ball nozzle mounting seat 44 is used to install the ball nozzle of a yoga ball. A screw 45 is rotatably connected to the bottom mold 42. A nut 46 is threaded onto the screw 45. The nut 46 is used to fix the top mold 43 through the snap-fit ​​between the screw 45 and the top mold 43.

[0035] The drive mechanism 5 includes a servo motor 51, which is bolted to the bottom of the rotating base 2. A first gear 52 is connected to the output shaft of the servo motor 51 via a keyway. A first gear ring 53 is connected to the bottom of the rotating frame 41 via a keyway. The first gear 52 meshes with the first gear ring 53. The servo motor 51 drives the rotating frame 41 to rotate via the first gear 52 and the first gear ring 53.

[0036] The self-rotating mechanism 6 includes a second gear ring 61, which is bolted to the rotating seat 2. A support shell 62 is bolted to the rotating frame 41. A worm gear 63 is rotatably connected inside the support shell 62. A worm wheel 64 is connected to the bottom mold 42 via a keyway. The worm wheel 64 meshes with the worm gear 63. A second gear 65 is connected to the bottom end of the worm gear 63 via a keyway. The second gear 65 meshes with the second gear ring 61. The second gear ring 61 drives the bottom mold 42 to rotate through the second gear 65, the worm gear 63, and the worm wheel 64.

[0037] It also includes a spray frame 9, which is bolted to the heating furnace 1. Spray nozzles are provided on both ends of the spray frame 9 near the top mold 43. The spray frame 9 is used to spray water to cool the bottom mold 42 and the top mold 43 through the spray nozzles of the spray frame 9.

[0038] First, the operator connects the end of the spray frame 9 furthest from the top mold 43 to the water pump and starts the heating furnace 1. Then, the nozzle of the yoga ball is installed on the nozzle mounting seat 44. Next, a certain amount of molten plastic is injected into the bottom mold 42. After injection, the operator rotates the top mold 43 to make it fit against the bottom mold 42. Then, the screw 45 is rotated upwards to engage with the slot in the top mold 43. Next, the nut 46 is rotated downwards to press against the slot in the top mold 43, thus fixing the top mold 43 onto the bottom mold 42. Then, the operator starts the servo motor 51. The rotation of the output shaft of the servo motor 51 drives the first gear 52 to rotate, and the rotation of the first gear 52... The first gear ring 53 drives the rotating frame 41 to rotate, which in turn drives the bottom mold 42 and the top mold 43 to rotate. Simultaneously, the rotation of the rotating frame 41 causes the support shell 62 to move, causing the worm gear 63 inside the support shell 62 to rotate via the second gear 65 and the second gear ring 61. This rotation of the worm gear 63, through the worm wheel 64, drives the bottom mold 42 and the top mold 43 to rotate, ensuring uniform flow of the molten plastic within the top mold 43 and the bottom mold 42. Simultaneously, the operator controls the output shaft of the reduction motor 3 to rotate the rotating seat 2 upwards by a certain angle. This rotation of the rotating seat 2 causes the molding mechanism 4, the drive mechanism 5, and the rotation mechanism 6 to move together. After rotating upwards by a certain angle, the rotating seat 2 drives the top mold 43 and the bottom mold... 42 enters the heating furnace 1, causing the furnace 1 to heat the top mold 43 and bottom mold 42. Simultaneously, the rotating seat 2 blocks the furnace opening of the heating furnace 1, thus maintaining its temperature. In this way, as the rotating seat 2 carries the top mold 43 and bottom mold 42 into the heating furnace 1, the rotating frame 41 drives the bottom mold 42 and top mold 43 to rotate, and the top mold 43 and bottom mold 42 also rotate on their own axes. This multi-dimensional rotation of the top mold 43 and bottom mold 42 during heating results in more uniform shaping of the yoga ball, thereby enhancing the production effect of the rotational molding device. After heating the top mold 43 and bottom mold 42 for a certain period, the operator controls the output shaft of the reduction motor 3 to drive the rotating seat 2 to rotate in the opposite direction by a certain angle, causing the rotation... The rotating base 2 is reset, and then the servo motor 51 is turned off when the top mold 43 is at the top, so that the rotating frame 41, bottom mold 42 and top mold 43 no longer rotate. At the same time, the operator starts the water pump, so that water enters the spray frame 9 through the water pump. The water entering the spray frame 9 will be sprayed out of the two nozzles of the spray frame 9 towards the top mold 43 and bottom mold 42, thereby cooling the top mold 43 and bottom mold 42 and the yoga ball that is initially formed inside. After cooling is completed, the operator turns off the water pump and turns the nut 46 to reset it. Then, the screw 45 is turned downward to reset the screw 45. Immediately afterwards, the operator turns the top mold 43 upward to open it. Then the operator can take out the initially formed yoga ball from the bottom mold 42.

[0039] Example 2: Based on Example 1, such as Figures 1-15As shown, it also includes a fixing mechanism 7, which is mounted on the ball nozzle mounting base 44. The fixing mechanism 7 includes a lifting column 71, which is slidably connected to the ball nozzle mounting base 44. The lifting column 71 has a hollow structure, and both the upper and lower parts of the lifting column 71 have ventilation holes communicating with the interior of the hollow structure. A connecting frame 72 is bolted to the bottom mold 42, and six limit wheels 721 are rotatably connected to the connecting frame 72. Each pair of limit wheels 721 that are close to each other forms a group. A cam 723 is bolted to the top mold 43. A guide sleeve 73 is welded to the bottom of the ball nozzle mounting base 44, and a guide frame 74 is slidably connected to the guide sleeve 73. The guide frame 74 has two guide grooves. The guide slot is slidably connected to the bottom of the lifting column 71. The guide frame 74 drives the lifting column 71 to rise and fall through two guide slots. A tension spring 75 is connected between the guide frame 74 and the guide sleeve 73. A steel wire rope 722 is connected between the top mold 43 and the guide frame 74. The steel wire rope 722 passes through three sets of limit wheels 721. The limit wheels 721 are used to limit the steel wire rope 722. The top mold 43 and the cam 723 jointly pull the steel wire rope 722 to drive the guide frame 74 to move. Two sliding blocks 76 are slidably connected to the middle of the ball nozzle mounting seat 44. Two inclined slots are opened on each of the two sliding blocks 76. The inclined slots of the two sliding blocks 76 are slidably connected to the lifting column 71. The lifting column 71 drives the two sliding blocks 76 to abut against the inner wall of the ball nozzle through the inclined slots of the two sliding blocks 76.

[0040] Both sliding blocks 76 have several grooves, which increase the friction between the sliding blocks 76 and the ball nozzle.

[0041] When the operator closes the top mold 43, the top mold 43 pulls the wire rope 722. Simultaneously, the top mold 43 drives the cam 723 to rotate. The rotation of the cam 723 compresses the wire rope 722 outwards, causing the wire rope 722 to pull the guide frame 74 towards the connecting frame 72 under the control of multiple limit wheels 721. The tension spring 75 is stretched, causing the guide frame 74 to drive the lifting column 71 downwards through the guide groove. The downward movement of the lifting column 71 drives the two sliding blocks 76 to move away from each other through the inclined grooves of the two sliding blocks 76, causing the two sliding blocks 76 to abut against the inner wall of the ball nozzle. Thus, when the top mold 43 is closed, the two sliding blocks with the slotted grooves... The moving block 76 abuts against the inner wall of the nozzle, thus better fixing the nozzle without affecting its disassembly and assembly, making it less likely to fall off during rotational molding, thereby enhancing the stability of yoga ball production. After the yoga ball is initially formed, the operator opens the top mold 43, causing the top mold 43 to reset and no longer pull the wire rope 722. The cam 723 resets and no longer squeezes the wire rope 722. The tension spring 75 resets, driving the guide frame 74 and the wire rope 722 to reset. The reset of the guide frame 74 will drive the lifting column 71 to reset, causing the two sliding blocks 76 to reset. After the two sliding blocks 76 are reset, they no longer abut against the inner wall of the nozzle, making it easier to remove the initially formed yoga ball from the bottom mold 42.

[0042] Example 3: Based on Example 2, such as Figures 1-15 As shown, it also includes a peeling mechanism 8, which is mounted on the heating furnace 1. The peeling mechanism 8 includes a piston tube 81, which is bolted to the heating furnace 1. A piston rod 82 is slidably connected inside the piston tube 81. The piston rod 82 has a hollow structure and is connected to the interior of the piston tube 81. The piston rod 82 is bolted to the rotating seat 2. A docking frame 84 is bolted to the bottom of the rotating seat 2. The docking frame 84 is rotatably connected to the rotating frame 41. The airflow channel of the docking frame 84 is connected to the airflow channel of the rotating frame 41. A connecting pipe 83 is connected between the docking frame 84 and the piston rod 82. The connecting pipe 83 is connected to both the piston rod 82 and the docking frame 84. A first one-way valve 85 is installed inside the piston tube 81, and a second one-way valve 86 is installed inside the piston rod 82.

[0043] Initially, the lower vent of the lifting column 71 is connected to the opening of the ball nozzle mounting seat 44, and the upper vent of the lifting column 71 is connected to the interior of the bottom mold 42. When the top mold 43 is closed, the lifting column 71 moves downward, so that the lower vent of the lifting column 71 is no longer connected to the opening of the ball nozzle mounting seat 44. At the same time, the ball nozzle mounting seat 44 blocks the upper vent of the lifting column 71. When the rotating seat 2 rotates upward, it drives the piston rod 82 to compress the air in the piston tube 81, causing the air in the piston tube 81 to be discharged through the first one-way valve 85. When the rotating seat 2 rotates downward, it drives the piston rod 82 to reset. The reset of the piston rod 82 creates a negative pressure in the piston tube 81. When the top mold 43 is opened, the lifting column 71 resets, allowing the lifting column 71 to... The lower vent is connected to the opening of the ball nozzle mounting seat 44 again, and the upper vent of the lifting column 71 is connected to the inside of the bottom mold 42 again. The negative pressure in the piston tube 81 extracts some of the air from the initially formed yoga ball through the hollow piston rod 82, the second one-way valve 86, the connecting pipe 83, the docking frame 84, the airflow channel of the rotating frame 41, the airflow channel of the bottom mold 42, the opening of the ball nozzle mounting seat 44, the lower vent of the lifting column 71, and the upper vent of the lifting column 71. In this way, by simultaneously extracting some of the air from the yoga ball when the top mold 43 is opened, the yoga ball shrinks and reduces its contact with the bottom mold 42, making it easier to peel the yoga ball off the bottom mold 42, thereby improving the production efficiency of the rotational molding device for yoga balls.

[0044] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A high-efficiency rotational molding device, characterized in that, It includes a heating furnace (1), a rotating seat (2) rotatably connected to the heating furnace (1), a geared motor (3) fixedly connected to the heating furnace (1), the output shaft of the geared motor (3) fixedly connected to the rotating seat (2), a forming mechanism (4) provided on the rotating seat (2), a driving mechanism (5) provided on the rotating seat (2), and a self-rotation mechanism (6) provided on the rotating seat (2). The forming mechanism (4) includes a rotating frame (41), which is rotatably connected to the rotating seat (2). A bottom mold (42) is rotatably connected to the rotating frame (41). Both the bottom mold (42) and the rotating frame (41) are provided with airflow channels. The airflow channel of the bottom mold (42) is connected to the airflow channel of the rotating frame (41). A top mold (43) is hinged to the bottom mold (42). A slot is provided at the top of the top mold (43). A ball nozzle mounting seat (44) is fixedly connected to the bottom mold (42). An opening is provided at the bottom of the ball nozzle mounting seat (44). The opening of the ball nozzle mounting seat (44) is connected to the airflow channel of the bottom mold (42). A screw (45) is rotatably connected to the bottom mold (42). A nut (46) is threaded onto the screw (45). It also includes a fixing mechanism (7), which is located on the ball nozzle mounting seat (44). The fixing mechanism (7) includes a lifting column (71), which is slidably connected to the ball nozzle mounting seat (44). The lifting column (71) is a hollow structure. Ventilation holes communicating with the interior of the hollow lifting column (71) are opened at the upper and lower parts of the lifting column (71). A connecting frame (72) is fixedly connected to the bottom mold (42). Six limiting wheels (721) are rotatably connected to the connecting frame (72). Each pair of limiting wheels (721) that are close to each other is a group. A cam (723) is fixedly connected to the top mold (43). The bottom of the ball nozzle mounting seat (44) is fixedly connected to... There is a guide sleeve (73), and a guide frame (74) is slidably connected to the guide sleeve (73). Two guide grooves are opened on the guide frame (74). The two guide grooves of the guide frame (74) are slidably connected to the bottom of the lifting column (71). A tension spring (75) is connected between the guide frame (74) and the guide sleeve (73). A wire rope (722) is connected between the top mold (43) and the guide frame (74). The wire rope (722) passes through three sets of limit wheels (721). Two sliding blocks (76) are slidably connected to the middle of the ball nozzle mounting seat (44). Two inclined grooves are opened on each of the two sliding blocks (76). The inclined grooves of the two sliding blocks (76) are slidably connected to the lifting column (71).

2. The high-efficiency rotational molding device according to claim 1, characterized in that, The drive mechanism (5) includes a servo motor (51), which is fixed to the bottom of the rotating seat (2). A first gear (52) is fixed to the output shaft of the servo motor (51), and a first gear ring (53) is fixed to the bottom of the rotating frame (41). The first gear (52) meshes with the first gear ring (53).

3. The high-efficiency rotational molding device according to claim 2, characterized in that, The self-rotating mechanism (6) includes a second gear ring (61), which is fixedly connected to the rotating seat (2). A support shell (62) is fixedly connected to the rotating frame (41). A worm gear (63) is rotatably connected inside the support shell (62). A worm wheel (64) is fixedly connected to the bottom mold (42). The worm wheel (64) meshes with the worm gear (63). A second gear (65) is fixedly connected to the bottom end of the worm gear (63). The second gear (65) meshes with the second gear ring (61).

4. The high-efficiency rotational molding device according to claim 1, characterized in that, Both sliding blocks (76) have several strip grooves.

5. The high-efficiency rotational molding device according to claim 1, characterized in that, It also includes a peeling mechanism (8), which is mounted on a heating furnace (1). The peeling mechanism (8) includes a piston tube (81), which is fixedly connected to the heating furnace (1). A piston rod (82) is slidably connected inside the piston tube (81). The piston rod (82) is hollow and communicates with the inside of the piston tube (81). The piston rod (82) is fixedly connected to a rotating seat (2). A docking frame (84) is fixedly connected to the bottom of the rotating seat (2). The docking frame (84) is rotatably connected to the rotating frame (41). The airflow channels of the docking frame (84) and the rotating frame (41) are connected. A connecting pipe (83) is connected between the docking frame (84) and the piston rod (82). The connecting pipe (83) communicates with the piston rod (82) and the docking frame (84) respectively. A first one-way valve (85) is installed inside the piston tube (81), and a second one-way valve (86) is installed inside the piston rod (82).

6. The high-efficiency rotational molding apparatus according to claim 5, characterized in that, It also includes a spray rack (9), which is fixed to the heating furnace (1). Spray nozzles are provided on both ends of the spray rack (9) near the top mold (43).

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