Rotational Molding Device and Method for Producing Parts of Children's Play Slides

Abstract

The present invention relates to the technical field of plastic mold production, specifically, to a rotational molding device and method for producing parts of children's amusement slides, including a mold placement mechanism and heat dissipation mechanisms arranged on the left and right sides of the mold placement mechanism. The mold placement mechanism includes a swinging cantilever, a mold placement frame that rotates as the swinging cantilever rotates, and a first driving motor that drives the swinging cantilever to rotate. For this rotational molding device and method for producing parts of children's amusement slides, when the second driving motor is started, the reciprocating lead screw rotates to drive the moving part to reciprocate in the swinging frame. At the same time, through the transmission part, the overall angle of the swinging frame is changed, thereby increasing the coverage range of the cooling fan inside the moving part, optimizing the air flow distribution, and improving the uniformity of mold heat dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic mold production, and more specifically, to a rotational molding device and method for producing parts of children's amusement slides. Background Art

[0002] The rotational molding device for producing parts of children's amusement slides is an efficient and flexible molding equipment. It adopts the rotational molding process, evenly distributes plastic powder on the surface of the heated mold, and through the rotation and heating of the mold, the plastic melts and tightly adheres to the mold cavity, and finally cools and solidifies to obtain a hollow product. This device is suitable for producing various parts of the slide, such as slideways, baffles, etc., and has the advantages of low mold cost, good edge strength of the product, and complex and variable shapes.

[0003] The patent with the application number CN202310104476.9 discloses an electric heating rotational molding device, belonging to the technical field of rotational molding. It includes a placement rack, a centrifugal cantilever, a placement platform, and a mold. The centrifugal cantilever is rotationally connected to the placement rack, and a first driving source is arranged on the placement rack, which is used to drive the placement rack to rotate. The placement platform is rotationally connected to the centrifugal cantilever, and a second driving source is arranged on the centrifugal cantilever, which is used to drive the placement platform to rotate. This application has the effects of reducing the labor intensity of workers and improving the demolding efficiency.

[0004] After the existing rotational molding device completes the heating and molding of the mold, it usually places the mold beside a fixed radiator fan, and cools the mold through the fixed radiator fan. However, the air volume of the fixed radiator fan is concentrated in a specific area, resulting in a slower cooling speed in other areas, which is likely to cause local thermal stress concentration of the mold and accelerate the aging of the mold. In addition, some cooling processes adopt a combination of air cooling and water cooling, but continuous spraying of liquid may cause frequent thermal expansion and contraction on the surface of the mold, increasing the thermal stress of the mold and further accelerating fatigue damage.

[0005] In view of this, we propose a rotational molding device and method for producing parts of children's amusement slides. Summary of the Invention

[0006] The purpose of the present invention is to provide a rotational molding device and method for producing parts of children's amusement slides to solve the problems raised in the above background art.

[0007] To achieve the above purpose, on the one hand, the present invention provides the following technical solutions:

[0008] A rotational molding device for producing parts of children's amusement slides includes a mold placement mechanism and heat dissipation mechanisms arranged on the left and right sides of the mold placement mechanism. The mold placement mechanism includes a swing cantilever, a mold placement frame that rotates as the swing cantilever rotates, and a first driving motor that drives the swing cantilever to rotate.

[0009] The heat dissipation mechanism includes a fixed frame, a swing device arranged inside the fixed frame, a moving part that reciprocates back and forth inside the swing device, and a spraying device arranged at the top end of the fixed frame;

[0010] The swing device includes a swing frame, convex shafts arranged on the outer side walls at the front and rear ends of the swing frame, a reciprocating lead screw that drives the moving part to reciprocate back and forth inside the swing frame by its own rotation to increase the coverage range of the moving part, a limiting ring body sleeved on the outside of the reciprocating lead screw, an outer sleeve ring gear sleeved on the outside of the limiting ring body, a second driving motor that drives the reciprocating lead screw to rotate, and a transmission part sleeved on the outside of the end of the reciprocating lead screw;

[0011] The transmission part includes an arc-edge gear, an outer sleeve frame body that moves left and right reciprocally as the arc-edge gear rotates, and an inner gear that rotates reciprocally as the outer sleeve frame body moves. When the inner gear rotates reciprocally, it drives the outer sleeve ring gear meshed with it to rotate, and drives the fixed angle of the swing frame to change continuously;

[0012] The spraying device includes a water pipe, a plurality of spray heads regularly distributed on the outside of the water pipe, cross-shaped outer connecting pipes arranged at both ends of the water pipe, a sealing rod slidably connected inside the longitudinal pipe of the cross-shaped outer connecting pipe, and a moving cross plate arranged at the bottom end of the sealing rod. A water passing hole that penetrates left and right is opened inside the cross-shaped outer connecting pipe. The moving cross plate is sleeved on the outside of the convex shaft. When the convex shaft moves along with the swing frame, the moving cross plate also moves up and down accordingly, and periodically allows water to flow from the cross-shaped outer connecting pipe into the water pipe.

[0013] In the technical solution of the present invention, the mold placing mechanism further includes a fixed bottom plate and a lifting frame fixedly connected to the top surface of the fixed bottom plate by bolts. The swing cantilever is rotatably connected inside a limiting bracket on the top surface of the lifting frame. When the swing cantilever rotates, it drives the swing cantilever to rotate, so that the internal raw materials are evenly covered inside the mold.

[0014] In the technical solution of the present invention, placing grooves are opened on both the front and rear sides of the fixed frame, a limiting ring groove is opened on the inner side wall of the fixed frame, and a guiding arc groove is opened on the inner side wall of the fixed frame obliquely above the limiting ring groove. The guiding arc groove is used to limit the swing range of the swing device.

[0015] In the technical solution of the present invention, a limiting chute is opened on the inner bottom surface of the swing frame. The convex shaft is integrally formed with the swing frame, and the end extends from the guiding arc groove to the inside of the placing groove. The front and rear ends of the reciprocating lead screw are respectively rotatably connected to the outer side walls at the front and rear ends of the fixed frame.

[0016] In the technical solution of the present invention, the limiting ring body is fixedly connected to the outer side wall of the swing frame through bolts. The size of the inner side of the limiting ring body is adapted to the size of the reciprocating lead screw. The outer sleeve ring gear is fixedly connected to the outer side wall of the limiting ring body through a pin. The second driving motor is fixedly connected to the outer side wall of the fixed frame through bolts and the output shaft is coaxially connected to the reciprocating lead screw.

[0017] In the technical solution of the present invention, the arc-edge gear is fixedly connected to the end position of the reciprocating lead screw through a pin. The outer sleeve frame body is slidably connected to the inside of the placement groove. Inner racks meshing with the arc-edge gear are welded on the upper and lower end frame walls of the outer sleeve frame body. An outer rack is welded on the top surface of the outer sleeve frame body. The arc-edge gear rotates with the reciprocating lead screw, and the outer annular racks respectively abut against the upper and lower inner racks, thereby driving the outer sleeve frame body to move left and right.

[0018] In the technical solution of the present invention, the transmission part further includes a docking gear parallel to the inner gear and a connecting rod clamped between the inner gear and the docking gear. When the outer sleeve frame body moves left and right, the inner gear drives the docking gear to rotate reciprocally through the connecting rod, and through the outer sleeve ring gear, drives the overall position of the swing frame to swing continuously.

[0019] In the technical solution of the present invention, the moving part includes a moving frame body, a limiting slider slidably connected to the inside of the limiting chute, and a plurality of heat dissipation fans fixedly connected to the inside of the moving frame body through bolts. After the limiting slider is sleeved on the outside of the reciprocating lead screw and rotates with it, the moving frame body reciprocates, thereby increasing the coverage range of the heat dissipation fans.

[0020] In the technical solution of the present invention, the spray head is threadedly connected to the outside of the water pipe. One end of the horizontal pipe of the cross-shaped outer connecting pipe is clamped and fixed inside the water pipe and the other end is connected to the water supply pipe. The moving horizontal plate is slidably connected to the inside of the placement groove and an inner through hole for providing a moving interval for the outer convex shaft is opened inside. The sealing rod is clamped and fixed inside the moving horizontal plate. The inner diameter of the inner through hole is adapted to the inner diameter of the horizontal pipe of the cross-shaped outer connecting pipe.

[0021] On the other hand, the present invention also provides a rotational molding method for the production of children's amusement slide parts, using the above-mentioned rotational molding device for the production of children's amusement slide parts, including the following steps:

[0022] S1. First, the operator pours plastic powder particles into the inside of the slide part mold, fixes the mold inside the mold placement frame in the mold placement mechanism, and through the track provided on the ground and the external cylinder, pushes the mold placement mechanism towards the heating box. After pushing the mold placement frame into the inside of the heating box, start the first driving motor to drive the swing cantilever to rotate, and after melting the plastic powder particles, cover the inside of the mold;

[0023] S2. Then, after the slide parts in the mold are formed, control the mold placement frame to leave the inside of the heating box and move above a set of heat dissipation mechanisms.

[0024] S3. Subsequently, start the cooling fan in the moving part and the second drive motor in the swinging device simultaneously. When the second drive motor rotates, it drives the reciprocating lead screw to rotate.

[0025] S4. After the reciprocating lead screw rotates, it drives the limit slider and the moving frame body to move back and forth in the swinging frame, increasing the coverage area of the cooling fan and optimizing the air flow distribution.

[0026] S5. At the same time, the rotating reciprocating lead screw drives the arc-edge gear to rotate. When the arc-edge gear rotates, it contacts the internal racks at the upper and lower ends of the outer sleeve frame body in turn, driving the outer sleeve frame body to move back and forth left and right. Then, the reciprocating outer rack drives the docking gear to rotate reciprocally, so that the internal gear rotates reciprocally with the docking gear.

[0027] S6. When the docking gear rotates reciprocally, it contacts the outer sleeve ring gear and drives the swinging frame to swing reciprocally around the reciprocating lead screw, causing the convex shaft to move back and forth in the guiding arc groove, and then continuously changing the angle of the air flow blown by the cooling fan.

[0028] S7. During the process of the convex shaft moving back and forth, the position where it contacts the inner through hole in the moving cross plate continuously changes, driving the moving cross plate to move up and down reciprocally, and then causing the sealing rod to slide up and down in the longitudinal pipe of the cross-shaped outer connecting pipe.

[0029] S8. When the sealing rod moves to the highest position, the water passing hole has the same diameter as the cross pipe of the cross-shaped outer connecting pipe, allowing the water flow of the external water pipe to enter the inside of the water passing pipe and then through several spray heads, and then spraying water mist onto the mold of the mold placement frame, thus cooperating with the cooling fan to accelerate the cooling time of the mold.

[0030] S9. After that, after the mold is completely cooled, the operator takes out the mold from the mold placement frame and takes out and stores the slide parts inside the mold.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. For the rotational molding device and method for producing children's playground slide parts, when the second drive motor is started, the reciprocating lead screw rotates to drive the moving part to move back and forth in the swinging frame. At the same time, through the transmission part, the overall angle of the swinging frame also changes, increasing the coverage area of the cooling fan inside the moving part, thereby optimizing the air flow distribution and improving the uniformity of mold heat dissipation.

[0033] 2. After the swing frame swings, it will also drive the moving cross plate in the spraying device to move up and down. Through the sealing rod, a number of spray heads periodically spray water mist on the mold, thereby improving the cooling uniformity and avoiding the waste of resources caused by continuous spraying and the problem of thermal stress of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0035] Figure 2 It is a schematic diagram of the structure of the mold placing mechanism in the present invention.

[0036] Figure 3 It is a schematic diagram of the structure of the heat dissipation mechanism in the present invention;

[0037] Figure 4 It is a schematic cross-sectional view of the structure of the fixed frame in the present invention.

[0038] Figure 5 It is a schematic diagram of the structure of the swing device in the present invention.

[0039] Figure 6 It is a schematic cross-sectional view of a partial structure of the swing device in the present invention.

[0040] Figure 7 For the present invention Figure 6 An enlarged schematic view of part A in.

[0041] Figure 8 It is a schematic diagram of the structure of the transmission part in the present invention.

[0042] Figure 9 It is a schematic diagram of the structure of the moving part in the present invention.

[0043] Figure 10 It is a schematic diagram of the structure of the spraying device in the present invention.

[0044] Description of the reference numerals:

[0045] 100, mold placing mechanism; 110, fixed bottom plate; 120, lifting frame; 130, swing cantilever; 140, mold placement frame; 150, first drive motor;

[0046] 200. Heat dissipation mechanism; 210. Fixed frame; 211. Placing groove; 212. Limiting ring groove; 213. Guide arc groove; 220. Swing device; 221. Swing frame; 2210. Limiting sliding groove; 222. Outer convex shaft; 223. Reciprocating lead screw; 224. Limiting ring body; 225. Outer sleeve ring gear; 226. Second drive motor; 227. Transmission part; 2270. Arc edge gear; 2271. Outer sleeve frame body; 2272. Inner rack; 2273. Outer rack; 2274. Inner gear; 2275. Docking gear; 2276. Connecting rod; 230. Moving part; 231. Moving frame body; 232. Limiting slider; 233. Cooling fan; 240. Spraying device; 241. Water pipe; 242. Spraying head; 243. Cross outer connecting pipe; 244. Moving cross plate; 2440. Inner through hole; 245. Sealing rod; 2450. Water through hole. Detailed implementation manners

[0047] The following will clearly and completely describe the technical solutions in the present invention with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0048] Please refer to Figures 1 - 10 as shown, the technical solution provided in this embodiment is as follows:

[0049] A rotational molding device for the production of children's amusement slide parts includes a mold placing mechanism 100 and heat dissipation mechanisms 200 arranged on the left and right sides of the mold placing mechanism 100. The mold placing mechanism 100 includes a swing cantilever 130, a mold placement frame 140 that rotates as the swing cantilever 130 rotates, and a first drive motor 150 that drives the swing cantilever 130 to rotate.

[0050] In this embodiment, as Figure 2 shown, the mold placing mechanism 100 further includes a fixed bottom plate 110 and a lifting frame 120 fixedly connected to the top surface of the fixed bottom plate 110 by bolts. The swing cantilever 130 is rotatably connected inside a limiting bracket on the top surface of the lifting frame 120. When the swing cantilever 130 rotates, it drives the swing cantilever 130 to rotate, so that the internal raw materials are evenly covered inside the mold.

[0051] Further, the operator pours plastic powder particles into the inside of the slide part mold, fixes the mold inside the mold placement frame 140 in the mold placing mechanism 100, and after pushing the mold placement frame 140 into the heating box, starts the first drive motor 150 to drive the swing cantilever 130 to rotate, so that the plastic powder particles melt and then cover the inside of the mold.

[0052] In this embodiment, as Figures 3 - 4 shown, the heat dissipation mechanism 200 includes a fixed frame 210, a swing device 220 arranged inside the fixed frame 210, a moving part 230 that reciprocates back and forth inside the swing device 220, and a spraying device 240 arranged at the top end of the fixed frame 210.

[0053] Specifically, placing grooves 211 are formed on both the front and rear sides of the fixed frame 210, a limiting ring groove 212 is formed on the inner side wall of the fixed frame 210, and a guiding arc groove 213 is formed on the inner side wall of the fixed frame 210 obliquely above the limiting ring groove 212. The guiding arc groove 213 is used to limit the swinging range of the swing device 220.

[0054] Furthermore, the fixed frame 210 is used to ensure the stability of the overall structure of the heat dissipation mechanism 200. The placing grooves 211 are used to provide a placing range for the structures of the swing device 220 and the transmission part 227. The limiting ring groove 212 and the guiding arc groove 213 cooperate to limit the swinging range of the swing device 220.

[0055] In this embodiment, as Figures 5 - 7 shown, the swing device 220 includes a swing frame 221, convex shafts 222 arranged on the outer side walls at the front and rear ends of the swing frame 221, a reciprocating lead screw 223 that drives the moving part 230 to reciprocate back and forth inside the swing frame 221 by its own rotation to increase the coverage range of the moving part 230, a limiting ring body 224 sleeved outside the reciprocating lead screw 223, an outer sleeve ring gear 225 sleeved outside the limiting ring body 224, a second driving motor 226 that drives the reciprocating lead screw 223 to rotate, and a transmission part 227 sleeved outside the end of the reciprocating lead screw 223.

[0056] Specifically, a limiting sliding groove 2210 is formed on the inner bottom surface of the swing frame 221. The convex shafts 222 are integrally formed with the swing frame 221, and the ends extend from the guiding arc groove 213 to the inside of the placing groove 211. The front and rear ends of the reciprocating lead screw 223 are respectively rotatably connected to the outer side walls at the front and rear ends of the fixed frame 210.

[0057] Furthermore, the limiting ring body 224 is fixedly connected to the outer side wall of the swing frame 221 by bolts. The size inside the limiting ring body 224 is adapted to the size of the reciprocating lead screw 223. The outer sleeve ring gear 225 is fixedly connected to the outer side wall of the limiting ring body 224 by a snap pin. The second driving motor 226 is fixedly connected to the outer side wall of the fixed frame 210 by bolts, and the output shaft is coaxially connected to the reciprocating lead screw 223.

[0058] Further, the limit chute 2210 within the swing frame 221 is used to limit the movement range of the moving part 230. The movement of the convex shaft 222 drives the structures inside the spraying device 240 to move. After the second driving motor 226 is started, it drives the reciprocating lead screw 223 to rotate, so as to make the entire moving part 230 reciprocate inside the swing frame 221.

[0059] In this embodiment, as Figure 8 shown, the transmission part 227 includes an arc-edge gear 2270, an outer sleeve frame 2271 that moves left and right reciprocally as the arc-edge gear 2270 rotates, and an inner gear 2274 that rotates reciprocally as the outer sleeve frame 2271 moves. When the inner gear 2274 rotates reciprocally, it drives the outer sleeve ring gear 225 meshing with it to rotate, thereby driving the fixed angle of the swing frame 221 to change continuously.

[0060] Specifically, the arc-edge gear 2270 is fixedly connected to the end position of the reciprocating lead screw 223 through a pin. The outer sleeve frame 2271 is slidably connected to the inside of the placement groove 211. Inner racks 2272 meshing with the arc-edge gear 2270 are welded to the upper and lower end walls of the outer sleeve frame 2271. An outer rack 2273 is welded to the top surface of the outer sleeve frame 2271. As the arc-edge gear 2270 rotates with the reciprocating lead screw 223, the outer annular racks respectively contact the inner racks 2272 on the upper and lower sides, thereby driving the outer sleeve frame 2271 to move left and right.

[0061] Further, the transmission part 227 further includes a docking gear 2275 parallel to the inner gear 2274 and a connecting rod 2276 clamped between the inner gear 2274 and the docking gear 2275. When the outer sleeve frame 2271 moves left and right, the inner gear 2274 drives the docking gear 2275 to rotate reciprocally through the connecting rod 2276, and through the outer sleeve ring gear 225, drives the overall position of the swing frame 221 to swing continuously.

[0062] Further, the rotating reciprocating lead screw 223 drives the arc-edge gear 2270 to rotate. When the arc-edge gear 2270 rotates, it successively contacts the inner racks 2272 at the upper and lower ends of the outer sleeve frame 2271, thereby driving the outer sleeve frame 2271 to move left and right reciprocally. Furthermore, the reciprocating outer rack 2273 drives the docking gear 2275 to rotate reciprocally, so that the inner gear 2274 rotates reciprocally together with the docking gear 2275. When the docking gear 2275 rotates reciprocally, it contacts the outer sleeve ring gear 225 and drives the swing frame 221 to swing reciprocally with the reciprocating lead screw 223 as the center, and makes the convex shaft 222 reciprocate inside the guiding arc groove 213.

[0063] In this embodiment, as Figure 9As shown in the figure, the moving part 230 includes a moving frame 231, a limit slider 232 slidably connected inside the limit chute 2210, and a plurality of cooling fans 233 fixedly connected to the inside of the moving frame 231 by bolts. After the limit slider 232 is sleeved outside the reciprocating lead screw 223 and rotates with it, the moving frame 231 reciprocates, thereby increasing the coverage range of the cooling fans 233.

[0064] Further, after the reciprocating lead screw 223 rotates, it drives the limit slider 232 and the moving frame 231 to reciprocate back and forth inside the swing frame 221, increasing the coverage range of the cooling fans 233. When the swing frame 221 reciprocates with the reciprocating lead screw 223 as the center, the air flow distribution of the cooling fans 233 is optimized.

[0065] In this embodiment, as Figure 10 shown, the spraying device 240 includes a water pipe 241, a plurality of spray heads 242 regularly distributed outside the water pipe 241, cross outer joints 243 provided at both ends of the water pipe 241, a sealing rod 245 slidably connected inside the longitudinal pipe of the cross outer joint 243, and a moving cross plate 244 provided at the bottom end of the sealing rod 245. A water through hole 2450 that penetrates left and right is provided inside the cross outer joint 243. The moving cross plate 244 is sleeved outside the protruding shaft 222. When the protruding shaft 222 moves with the swing frame 221, the moving cross plate 244 also moves up and down accordingly, periodically allowing water to flow from the cross outer joint 243 into the water pipe 241.

[0066] Specifically, the spray heads 242 are threadedly connected to the outside of the water pipe 241. One end of the horizontal pipe of the cross outer joint 243 is clamped and fixed inside the water pipe 241, and the other end is connected to the water supply pipe. The moving cross plate 244 is slidably connected inside the placement groove 211 and an inner through hole 2440 for providing a moving range for the protruding shaft 222 is provided inside. The sealing rod 245 is clamped and fixed inside the moving cross plate 244. The diameter of the inner through hole 2440 is adapted to the inner diameter of the horizontal pipe of the cross outer joint 243.

[0067] Further, during the reciprocating movement of the protruding shaft 222, the position in contact with the inner through hole 2440 inside the moving cross plate 244 continuously changes, driving the moving cross plate 244 to reciprocate up and down, thereby causing the sealing rod 245 to slide up and down inside the longitudinal pipe of the cross outer joint 243. When the sealing rod 245 moves to the highest position, the water through hole 2450 has the same diameter as the horizontal pipe of the cross outer joint 243, allowing the water flow from the external water pipe to enter the water pipe 241, and then spraying water mist onto the mold of the mold placement frame 140 through a plurality of spray heads 242, thereby cooperating with the cooling fans 233 to accelerate the cooling time of the mold.

[0068] The present invention also provides a rotational molding method for the production of children's playground slide parts. Using the above-mentioned rotational molding device for the production of children's playground slide parts, it includes the following steps:

[0069] S1. First, the operator pours plastic powder particles into the interior of the slide part mold, fixes the mold inside the mold placement frame 140 in the mold placement mechanism 100, and through the tracks set on the ground in cooperation with the external cylinder, pushes the mold placement mechanism 100 towards the heating box. After pushing the mold placement frame 140 into the interior of the heating box, start the first driving motor 150 to drive the swinging cantilever 130 to rotate, and after melting the plastic powder particles, cover the interior of the mold;

[0070] S2. Then, after the slide parts in the mold are formed, control the mold placement frame 140 to leave the interior of the heating box and move above a set of heat dissipation mechanisms 200;

[0071] S3. Subsequently, simultaneously start the heat dissipation fan 233 in the moving part 230 and the second driving motor 226 in the swinging device 220. When the second driving motor 226 rotates, it drives the reciprocating lead screw 223 to rotate;

[0072] S4. After the reciprocating lead screw 223 rotates, it drives the limit slider 232 together with the moving frame 231 to reciprocate back and forth inside the swinging frame 221, thereby increasing the coverage range of the heat dissipation fan 233 and optimizing the distribution of the air flow;

[0073] S5. At the same time, the rotating reciprocating lead screw 223 drives the arc-edge gear 2270 to rotate. When the arc-edge gear 2270 rotates, it successively contacts the internal racks 2272 at the upper and lower ends of the outer frame body 2271, thereby driving the outer frame body 2271 to reciprocate left and right. Furthermore, the reciprocating outer rack 2273 drives the docking gear 2275 to reciprocate, so that the internal gear 2274 rotates reciprocally together with the docking gear 2275;

[0074] S6. When the docking gear 2275 reciprocates, after contacting the outer ring gear 225, it drives the swinging frame 221 to reciprocate around the reciprocating lead screw 223, so that the convex shaft 222 reciprocates inside the guiding arc groove 213, thereby continuously changing the angle of the air flow blown by the heat dissipation fan 233;

[0075] S7. During the reciprocating movement of the convex shaft 222, the position where it contacts the internal through hole 2440 inside the moving cross plate 244 continuously changes, thereby driving the moving cross plate 244 to reciprocate up and down. Furthermore, the sealing rod 245 slides up and down inside the vertical pipe of the cross-shaped external pipe 243;

[0076] S8. After the sealing rod 245 moves to the highest position, the diameter of the water through hole 2450 is the same as that of the horizontal pipe of the cross-shaped external connecting pipe 243, allowing the water flow of the external water pipe to enter the inside of the water through pipe 241, and then spraying water mist onto the mold through a number of spray heads 242, thereby cooperating with the radiator fan 233 to accelerate the cooling time of the mold;

[0077] S9. After that, after the mold is completely cooled, the operator takes out the mold from the mold placement frame 140 and takes out and stores the internal slide parts from the mold.

[0078] The foregoing description of the specific exemplary embodiments of the present invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many changes and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the invention and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present invention as well as various different selections and changes. The scope of the present invention is intended to be defined by the specification and its equivalents.

Claims

1. A rotational molding device for the production of children's amusement slide parts, comprising a mold placement mechanism (100) and heat dissipation mechanisms (200) arranged on the left and right sides of the mold placement mechanism (100). The mold placement mechanism (100) includes a swinging cantilever (130), a mold placement frame (140) that rotates as the swinging cantilever (130) rotates, and a first driving motor (150) that drives the swinging cantilever (130) to rotate. It is characterized in that: The heat dissipation mechanism (200) includes a fixed frame (210), a swinging device (220) arranged inside the fixed frame (210), a moving part (230) that reciprocates back and forth inside the swinging device (220), and a spraying device (240) arranged at the top of the fixed frame (210). The swinging device (220) includes a swinging frame (221), convex shafts (222) arranged on the outer side walls of the front and rear ends of the swinging frame (221), a reciprocating lead screw (223) that drives the moving part (230) to reciprocate back and forth inside the swinging frame (221) by its own rotation to increase the coverage range of the moving part (230), a limiting ring body (224) sleeved on the outer side of the reciprocating lead screw (223), an outer sleeve ring gear (225) sleeved on the outer side of the limiting ring body (224), a second driving motor (226) that drives the reciprocating lead screw (223) to rotate, and a transmission part (227) sleeved on the outer side of the end of the reciprocating lead screw (223). The transmission part (227) includes an arc-edge gear (2270), an outer sleeve frame body (2271) that moves left and right reciprocally as the arc-edge gear (2270) rotates, and an inner gear (2274) that rotates reciprocally as the outer sleeve frame body (2271) moves. When the inner gear (2274) rotates reciprocally, it drives the outer sleeve ring gear (225) meshing with it to rotate, and the fixed angle of the swinging frame (221) is continuously changed. The spraying device (240) includes a water pipe (241), a number of spray heads (242) regularly distributed on the outer side of the water pipe (241), cross-shaped outer connecting pipes (243) arranged at both ends of the water pipe (241), a sealing rod (245) slidably connected to the longitudinal pipe inside the cross-shaped outer connecting pipe (243), and a moving cross plate (244) arranged at the bottom end of the sealing rod (245). A water passing hole (2450) that penetrates left and right is opened inside the cross-shaped outer connecting pipe (243). The moving cross plate (244) is sleeved on the outer side of the convex shaft (222). When the convex shaft (222) moves as the swinging frame (221) moves, the moving cross plate (244) also moves up and down, and periodically allows water to flow from the cross-shaped outer connecting pipe (243) into the water pipe (241).

2. The rotational molding device for manufacturing parts of children's amusement slides according to claim 1, wherein: The mold placing mechanism (100) further includes a fixed bottom plate (110) and a lifting frame (120) fixedly connected to the top surface of the fixed bottom plate (110) by bolts. The swing cantilever (130) is rotatably connected inside a limit bracket on the top surface of the lifting frame (120). When the swing cantilever (130) rotates, it drives the swing cantilever (130) to rotate, so that the internal raw materials evenly cover the inside of the mold.

3. The rotational molding device for manufacturing parts of children's amusement slides according to claim 2, characterized in that: Placement grooves (211) are formed on both the front and rear sides of the fixed frame (210). A limit ring groove (212) is formed on the inner side wall of the fixed frame (210). A guiding arc groove (213) is formed on the inner side wall of the fixed frame (210) obliquely above the limit ring groove (212). The guiding arc groove (213) is used to limit the swing range of the swing device (220).

4. The rotational molding device for manufacturing parts of children's amusement slides according to claim 3, characterized in that: A limit sliding groove (2210) is formed on the inner bottom surface of the swing frame (221). The convex shaft (222) is integrally formed with the swing frame (221), and its end extends from the guiding arc groove (213) into the placement groove (211). The front and rear ends of the reciprocating lead screw (223) are respectively rotatably connected to the outer side walls of the front and rear ends of the fixed frame (210).

5. The rotational molding device for the production of children's amusement slide parts according to claim 4, characterized in that: The limit ring body (224) is fixedly connected to the outer side wall of the swing frame (221) by bolts. The inner dimension of the limit ring body (224) is adapted to the dimension of the reciprocating lead screw (223). The outer sleeve ring gear (225) is fixedly connected to the outer side wall of the limit ring body (224) by a snap pin. The second driving motor (226) is fixedly connected to the outer side wall of the fixed frame (210) by bolts, and its output shaft is coaxially connected to the reciprocating lead screw (223).

6. The rotational molding device for manufacturing parts of children's amusement slides according to claim 5, characterized in that: The arc-edge gear (2270) is fixedly connected to the end position of the reciprocating lead screw (223) by a snap pin. The outer sleeve frame body (2271) is slidably connected inside the placement groove (211). Inner racks (2272) meshing with the arc-edge gear (2270) are welded to both the upper and lower frame walls of the outer sleeve frame body (2271). An outer rack (2273) is welded to the top surface of the outer sleeve frame body (2271). As the arc-edge gear (2270) rotates with the reciprocating lead screw (223), the outer annular racks respectively abut against the upper and lower inner racks (2272), driving the outer sleeve frame body (2271) to move left and right.

7. The rotational molding device for the production of children's amusement slide parts according to claim 6, characterized in that: The transmission part (227) further includes a butt joint gear (2275) parallel to the inner gear (2274) and a connecting rod (2276) clamped between the inner gear (2274) and the butt joint gear (2275). When the outer sleeve frame body (2271) moves left and right, the inner gear (2274) drives the butt joint gear (2275) to rotate reciprocally through the connecting rod (2276), and drives the overall position of the swing frame (221) to continuously swing through the outer sleeve ring gear (225).

8. The rotational molding device for manufacturing parts of children's amusement slides according to claim 7, characterized in that: The moving part (230) includes a moving frame (231), a limiting slider (232) slidably connected inside the limiting chute (2210), and a plurality of cooling fans (233) fixedly connected inside the moving frame (231) by bolts. After the limiting slider (232) is sleeved outside the reciprocating lead screw (223) and rotates with it, the moving frame (231) reciprocates, thereby increasing the coverage range of the cooling fans (233).

9. The rotational molding device for manufacturing parts of children's amusement slides according to claim 8, characterized in that: The spray head (242) is threadedly connected to the outside of the water pipe (241). One end of the horizontal pipe of the cross-shaped external connecting pipe (243) is fixedly clamped inside the water pipe (241), and the other end is connected to the water supply pipe. The moving horizontal plate (244) is slidably connected inside the placement groove (211), and an inner through hole (2440) for providing a moving range for the convex shaft (222) is opened inside. The sealing rod (245) is fixedly clamped inside the moving horizontal plate (244), and the inner diameter of the inner through hole (2440) is adapted to the inner diameter of the horizontal pipe of the cross-shaped external connecting pipe (243).

10. A rotational molding method for manufacturing parts of children's play slides, using the rotational molding device for manufacturing parts of children's play slides described in claim 9, characterized in that, It includes the following steps: S1. First, the operator pours plastic powder particles into the inside of the slide part mold, fixes the mold inside the mold placement frame (140) of the mold placement mechanism (100), and through the track set on the ground and the external cylinder, pushes the mold placement mechanism (100) towards the heating box. After pushing the mold placement frame (140) into the heating box, start the first drive motor (150) to drive the swing cantilever (130) to rotate, and after melting the plastic powder particles, cover the inside of the mold; S2. Next, after the slide parts in the mold are formed, control the mold placement frame (140) to leave the inside of the heating box and move above a set of heat dissipation mechanisms (200); S3. Subsequently, simultaneously start the cooling fans (233) in the moving part (230) and the second drive motor (226) in the swing device (220). When the second drive motor (226) rotates, it drives the reciprocating lead screw (223) to rotate; S4. After the reciprocating lead screw (223) rotates, it drives the limiting slider (232) and the moving frame (231) to reciprocate back and forth inside the swing frame (221), thereby increasing the coverage range of the cooling fans (233) and optimizing the air flow distribution; At the same time, the rotating reciprocating lead screw (223) will drive the arc-edge gear (2270) to rotate. When the arc-edge gear (2270) rotates, it will successively contact the inner racks (2272) at the upper and lower ends of the outer frame body (2271), driving the outer frame body (2271) to reciprocate left and right. Then, the reciprocating outer rack (2273) drives the docking gear (2275) to rotate reciprocally, so that the inner gear (2274) rotates reciprocally with the docking gear (2275); When the docking gear (2275) rotates reciprocally, after contacting the outer sleeve ring gear (225), it drives the swing frame (221) to swing reciprocally with the reciprocating screw rod (223) as the center, and makes the convex shaft (222) reciprocally move inside the guiding arc groove (213), thereby continuously changing the angle of the airflow blown by the cooling fan (233); During the reciprocating movement of the convex shaft (222), the contact position with the inner through hole (2440) inside the moving cross plate (244) continuously changes, driving the moving cross plate (244) to reciprocate up and down, and further making the sealing rod (245) slide up and down inside the longitudinal pipe of the cross-shaped outer connecting pipe (243); When the sealing rod (245) moves to the highest position, the water passing hole (2450) has the same diameter as the transverse pipe of the cross-shaped outer connecting pipe (243), allowing the water flow of the external water pipe to enter the inside of the water pipe (241), and through a number of spray heads (242), and then spraying water mist on the mold of the mold placement frame (140), thereby cooperating with the cooling fan (233) to accelerate the cooling time of the mold; After that, after the mold is completely cooled, the operator takes out the mold from the mold placement frame (140), and takes out and stores the internal slide parts from the mold.

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