Rotational molding device and method for production of child amusement slide parts

Abstract

The invention relates to the technical field of plastic mold production, in particular to a rotational molding device and method for producing child amusement slide parts, and the rotational molding device comprises a mold placing mechanism and heat dissipation mechanisms arranged on the left side and the right side of the mold placing mechanism; the mold containing mechanism comprises a swing cantilever, a mold containing frame rotating along with rotation of the swing cantilever and a first driving motor driving the swing cantilever to rotate. According to the rotational molding device and method for child amusement slide part production, when a second driving motor is started, a reciprocating lead screw rotates to drive a moving part to reciprocate in a swing frame, and meanwhile, the overall angle of the swing frame is driven to change through a transmission part, so that the coverage range of a heat dissipation fan in the moving part is enlarged, and the heat dissipation efficiency is improved. Furthermore, the airflow distribution is optimized, and the heat dissipation uniformity of the mold is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic mold production, in particular to a rotational molding device and a method thereof for producing parts of a children's amusement slide. Background Art

[0002] The rotational molding device for the production of children's amusement slide parts is an efficient and flexible molding equipment. It adopts the rotational molding process to evenly distribute the plastic powder on the surface of the heated mold. Through the rotation and heating of the mold, the plastic is melted and tightly adhered to the mold cavity. Finally, it is cooled and shaped to obtain a hollow product. This device is suitable for the production of various parts of the slide, such as slides, baffles, etc. It has the advantages of low mold cost, good product edge strength, and complex and changeable shapes.

[0003] The patent with application number CN202310104476.9 discloses an electric heating rotational molding device, which belongs 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 rotatably connected to the placement rack, and a first driving source is provided on the placement rack. The first driving source is used to drive the placement rack to rotate. The placement platform is rotatably connected to the centrifugal cantilever, and a second driving source is provided on the centrifugal cantilever. The second driving source is used to drive the placement platform to rotate. This application has the effect of reducing the labor intensity of workers and improving demolding efficiency.

[0004] After the existing rotational molding device completes the heating and molding of the mold, the mold is usually placed next to a fixed cooling fan to cool the mold. However, the air volume of the fixed cooling fan is concentrated in a specific area, resulting in a slower cooling speed in other areas, which can easily cause local thermal stress concentration in the mold and accelerate mold aging. In addition, some cooling processes use a combination of air cooling and water cooling, but continuous spraying of liquid may cause frequent thermal expansion and contraction of the mold surface, increase the thermal stress of the mold, and accelerate fatigue damage.

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

[0006] The object of the present invention is to provide a rotational molding device and method for producing parts of a children's amusement slide, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, on the one hand, the present invention provides the following technical solutions: A rotational molding device for producing parts of a children's amusement slide, comprising a mold placement mechanism and a heat dissipation mechanism arranged on the left and right sides of the mold placement mechanism, wherein the mold placement mechanism comprises 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; 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 spray device arranged at the top of the fixed frame; The swing device comprises a swing frame, an outer convex shaft arranged on the outer side walls of the front and rear ends of the swing frame, a reciprocating screw rod which drives the moving part to reciprocate back and forth in the swing frame by its own rotation to increase the coverage of the moving part, a limiting ring body sleeved on the outer side of the reciprocating screw rod, an outer ring gear sleeved on the outer side of the limiting ring body, a second driving motor that drives the reciprocating screw rod to rotate, and a transmission part sleeved on the outer side of the end of the reciprocating screw rod; The transmission part includes an arc gear, an outer frame body that reciprocates left and right as the arc gear rotates, and an inner gear that reciprocates as the outer frame moves. When the inner gear reciprocates, the outer ring gear meshing with it rotates, thereby driving the fixed angle of the swing frame to change continuously. The spray device includes a water pipe, a plurality of spray heads regularly distributed on the outside of the water pipe, a cross external pipe arranged at both ends of the water pipe, a sealing rod slidably connected to the inside of the longitudinal pipe of the cross external pipe, and a movable horizontal plate arranged at the bottom end of the sealing rod. The inside of the cross external pipe is provided with water holes that pass through left and right. The movable horizontal plate is sleeved on the outside of the outer convex shaft. When the outer convex shaft moves with the swing frame, the movable horizontal plate also moves up and down, and periodically allows water to flow from the cross external pipe into the water pipe.

[0008] In the technical solution of the present invention, the mold placement mechanism also includes a fixed base plate and a lifting frame fixedly connected to the top surface of the fixed base plate by bolts. The swing cantilever is rotatably connected to the inside of 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 material is evenly covered inside the mold.

[0009] In the technical solution of the present invention, placement grooves are provided on the front and rear sides of the fixed frame, a limiting ring groove is provided on the inner wall of the fixed frame, and a guide arc groove is provided on the inner wall of the fixed frame obliquely above the limiting ring groove, and the guide arc groove is used to limit the swing range of the swing device.

[0010] In the technical solution of the present invention, a limiting slide groove is provided on the inner bottom surface of the swing frame, the outer convex shaft is integrally formed with the swing frame and the end portion extends from the guide arc groove to the inside of the placement groove, and the front and rear ends of the reciprocating screw rod are respectively rotatably connected to the outer side walls of the front and rear ends of the fixed frame.

[0011] In the technical solution of the present invention, the limiting ring body is fixedly connected to the outer wall of the swing frame by bolts, the size of the inner side of the limiting ring body is adapted to the size of the reciprocating screw, the outer ring teeth are fixedly connected to the outer wall of the limiting ring body by a bayonet pin, the second drive motor is fixedly connected to the outer wall of the fixed frame by bolts and the output shaft is coaxially connected to the reciprocating screw.

[0012] In the technical solution of the present invention, the arc-edge gear is fixedly connected to the end position of the reciprocating screw by a bayonet pin, the outer jacket frame is slidably connected to the inside of the placement groove, and inner racks meshing with the arc-edge gear are welded on the upper and lower end frame walls of the outer jacket frame. An outer rack is welded on the top surface of the outer jacket frame. The arc-edge gear rotates with the reciprocating screw, and the outer annular rack respectively contacts the inner racks on the upper and lower sides, thereby driving the outer jacket frame to move left and right.

[0013] In the technical solution of the present invention, the transmission part also includes a docking gear parallel to the internal gear and a connecting rod clamped between the internal gear and the docking gear. When the outer sleeve frame moves left and right, the inner gear drives the docking gear to rotate back and forth through the connecting rod, and drives the overall position of the swing frame to swing continuously through the outer sleeve ring teeth.

[0014] In the technical solution of the present invention, the moving part includes a moving frame, a limiting slider slidably connected to the inside of the limiting slide groove, and a plurality of cooling fans fixedly connected to the inside of the moving frame by bolts. The limiting slider is sleeved on the outside of the reciprocating screw and rotates with the reciprocating screw, allowing the moving frame to reciprocate, thereby increasing the coverage range of the cooling fan.

[0015] 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 cross external tube is clamped and fixed to the inside of the water pipe, and the other end is connected to the water supply pipe, the movable horizontal plate is slidably connected to the inside of the placement groove and is provided with an internal through hole for increasing the moving range of the external convex shaft, the sealing rod is clamped and fixed to the inside of the movable horizontal plate, and the aperture of the internal through hole is adapted to the inner diameter of the cross external tube.

[0016] On the other hand, the present invention also provides a rotational molding method for producing parts of a children's amusement slide, using the above-mentioned rotational molding device for producing parts of a children's amusement slide, comprising the following steps: S1. First, the operator pours plastic powder into the interior of the slide component mold, fixes the mold inside the mold placement frame in the mold placement mechanism, pushes the mold placement mechanism to move toward the heating box through the track set on the ground and the external cylinder, and after pushing the mold placement frame into the heating box, starts the first drive motor to drive the swing cantilever to rotate, so that the plastic powder is melted and covers the interior of the mold; S2, after the slide parts in the mold are formed, the mold placement frame is controlled to leave the interior of the heating box and move to the top of a group of heat dissipation mechanisms; S3, then, the cooling fan in the moving part and the second driving motor in the swinging device are started simultaneously, and the reciprocating screw rod is driven to rotate when the second driving motor rotates; S4. After the reciprocating screw rod rotates, it drives the limit slider and the moving frame to move back and forth inside the swing frame, thereby increasing the coverage of the cooling fan and optimizing the distribution of the airflow; S5. At the same time, the rotating reciprocating screw will drive the arc gear to rotate. When the arc gear rotates, it will contact with the inner racks at the upper and lower ends of the outer frame in turn, and drive the outer frame to move back and forth, and then the reciprocating outer rack drives the docking gear to rotate back and forth, so that the inner gear rotates back and forth with the docking gear; S6. When the docking gear reciprocates, it will collide with the outer ring gear, driving the swing frame to reciprocate with the reciprocating screw as the center of the circle, and the outer convex shaft will reciprocate inside the guide arc groove, thereby continuously changing the angle of the airflow blown out by the cooling fan; S7, during the reciprocating movement of the outer convex shaft, the position of the contact with the inner through hole inside the movable horizontal plate is constantly changing, thereby driving the movable horizontal plate to reciprocate up and down, thereby allowing the sealing rod to slide up and down inside the cross external tube longitudinal tube; S8. When the sealing rod moves to the highest position, the water hole has the same diameter as the cross external pipe, and the water from the external water pipe enters the water pipe and sprays water mist to the mold of the mold placement frame through a plurality of spray heads, thereby cooperating with the cooling fan to accelerate the cooling time of the mold; S9. After that, after the mold is completely cooled, the operator takes the mold out of the mold mounting frame and takes out the internal slide parts from the mold for storage.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In the rotational molding device and method for producing parts for children's amusement slides, when the second drive motor is started, the reciprocating screw rotates to drive the moving part to reciprocate while the swing frame is moving. At the same time, the angle of the entire swing frame is changed through the transmission part, thereby increasing the coverage of the cooling fan inside the moving part, thereby optimizing the airflow distribution and improving the uniformity of mold heat dissipation.

[0018] 2. The rotational molding device and method for producing parts for children's amusement slides, after the swing frame swings, will also drive the movable horizontal plate in the spray device to move up and down, and through the sealing rod, a plurality of spray heads will periodically spray water mist to the mold, thereby improving the uniformity of cooling and avoiding the waste of resources caused by continuous spraying and the problem of mold thermal stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the mold placement mechanism in the present invention.

[0021] Figure 3 It is a structural schematic diagram of the heat dissipation mechanism in the present invention.

[0022] Figure 4 It is a schematic cross-sectional view of the structure of the fixed frame in the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the swing device in the present invention.

[0024] Figure 6 It is a partial structural cutaway diagram of the swing device in the present invention.

[0025] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of part A.

[0026] Figure 8 It is a structural schematic diagram of the transmission part in the present invention.

[0027] Fig. 9 It is a structural schematic diagram of the moving part in the present invention.

[0028] Fig.10 It is a schematic diagram of the structure of the spray device in the present invention.

[0029] Description of reference numerals: 100, mold placement mechanism; 110, fixed bottom plate; 120, lifting frame; 130, swing cantilever; 140, mold placement frame; 150, first drive motor; 200, heat dissipation mechanism; 210, fixed frame; 211, placement groove; 212, limiting ring groove; 213, guide arc groove; 220, swing device; 221, swing frame; 2210, limiting slide groove; 222, outer convex shaft; 223, reciprocating screw rod; 224, limiting ring body; 225, outer sleeve ring gear; 226, second drive motor; 227, transmission part; 2270, arc edge gear; 2271, outer sleeve frame; 22 72. Inner rack; 2273. Outer rack; 2274. Inner gear; 2275. Docking gear; 2276. Connecting rod; 230. Moving part; 231. Moving frame; 232. Limiting slider; 233. Cooling fan; 240. Spray device; 241. Water pipe; 242. Spray head; 243. Cross external pipe; 244. Moving horizontal plate; 2440. Inner through hole; 245. Sealing rod; 2450. Water hole. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 10 As shown, this embodiment provides a technical solution: A rotational molding device for producing parts for children's amusement slides includes a mold placement mechanism 100 and a heat dissipation mechanism 200 arranged on the left and right sides of the mold placement mechanism 100. The mold placement 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.

[0032] In this embodiment, Figure 2 As shown, the mold placement mechanism 100 also includes a fixed base plate 110, a lifting frame 120 fixedly connected to the top surface of the fixed base plate 110 by bolts, and a swing cantilever 130 rotatably connected to the inside of 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 material is evenly covered inside the mold.

[0033] Furthermore, the operator pours the plastic powder into the interior of the slide component mold, fixes the mold inside the mold placement frame 140 in the mold placement mechanism 100, pushes the mold placement frame 140 into the heating box, and then starts the first drive motor 150 to drive the swing cantilever 130 to rotate, so that the plastic powder is melted and covers the interior of the mold.

[0034] In this embodiment, Figure 3-Figure 4 As shown, the heat dissipation mechanism 200 includes a fixed frame 210 , a swing device 220 disposed inside the fixed frame 210 , a moving part 230 that reciprocates back and forth inside the swing device 220 , and a spray device 240 disposed at the top of the fixed frame 210 .

[0035] Specifically, placement grooves 211 are provided on the front and rear sides of the fixed frame 210, a limiting ring groove 212 is provided on the inner wall of the fixed frame 210, and a guide arc groove 213 is provided on the inner wall of the fixed frame 210 obliquely above the limiting ring groove 212. The guide arc groove 213 is used to limit the swing range of the swing device 220.

[0036] Furthermore, the fixed frame 210 is used to ensure the stability of the overall structure of the heat dissipation mechanism 200, the placement groove 211 is used to increase the placement range for the structure of the swing device 220 and the transmission part 227, and the limiting ring groove 212 cooperates with the guide arc groove 213 to limit the swing range of the swing device 220.

[0037] In this embodiment, Figure 5-Figure 7 As shown, the swing device 220 includes a swing frame 221, an outer protruding shaft 222 arranged on the outer side walls of the front and rear ends of the swing frame 221, a reciprocating screw 223 that drives the moving part 230 to move back and forth in the swing frame 221 through its own rotation to increase the coverage of the moving part 230, a limiting ring body 224 sleeved on the outside of the reciprocating screw 223, an outer sleeve ring gear 225 sleeved on the outside of the limiting ring body 224, a second driving motor 226 that drives the reciprocating screw 223 to rotate, and a transmission part 227 sleeved on the outside of the end of the reciprocating screw 223.

[0038] Specifically, a limiting slide groove 2210 is provided on the inner bottom surface of the swing frame 221, the outer convex shaft 222 is integrally formed with the swing frame 221 and the end portion extends from the guide arc groove 213 to the interior of the placement groove 211, and the front and rear ends of the reciprocating screw rod 223 are respectively rotatably connected to the outer side walls of the front and rear ends of the fixed frame 210.

[0039] Furthermore, the limiting ring body 224 is fixedly connected to the outer wall of the swing frame 221 by bolts, the size of the inner side of the limiting ring body 224 is compatible with the size of the reciprocating screw 223, the outer ring gear 225 is fixedly connected to the outer wall of the limiting ring body 224 by a bayonet pin, and the second drive motor 226 is fixedly connected to the outer wall of the fixed frame 210 by bolts and the output shaft is coaxially connected to the reciprocating screw 223.

[0040] Furthermore, the limiting groove 2210 in the swing frame 221 is used to limit the moving range of the moving part 230, and the movement of the outer protruding shaft 222 is used to drive the internal structure of the spray device 240 to move. After the second drive motor 226 is started, it drives the reciprocating screw 223 to rotate, so as to allow the moving part 230 to reciprocate as a whole inside the swing frame 221.

[0041] In this embodiment, Figure 8 As shown, the transmission part 227 includes an arc-edge gear 2270, an outer jacket frame 2271 that reciprocates left and right as the arc-edge gear 2270 rotates, and an inner gear 2274 that reciprocates as the outer jacket frame 2271 moves. When the inner gear 2274 reciprocates, it drives the outer jacket ring gear 225 meshing with it to rotate, thereby driving the fixed angle of the swing frame 221 to continuously change.

[0042] Specifically, the arc-edge gear 2270 is fixedly connected to the end position of the reciprocating screw 223 by a bayonet pin, and the outer jacket frame 2271 is slidably connected to the inside of the placement groove 211. The upper and lower end frame walls of the outer jacket frame 2271 are welded with inner racks 2272 that mesh with the arc-edge gear 2270, and the top surface of the outer jacket frame 2271 is welded with an outer rack 2273. The arc-edge gear 2270 rotates with the reciprocating screw 223, and the outer annular racks respectively contact with the inner racks 2272 on the upper and lower sides, thereby driving the outer jacket frame 2271 to move left and right.

[0043] Furthermore, the transmission part 227 also includes a docking gear 2275 parallel to the internal gear 2274 and a connecting rod 2276 clamped between the internal gear 2274 and the docking gear 2275. When the outer sleeve frame 2271 moves left and right, the internal gear 2274 drives the docking gear 2275 to rotate back and forth through the connecting rod 2276, and drives the overall position of the swing frame 221 to swing continuously through the outer sleeve ring gear 225.

[0044] Furthermore, the rotating reciprocating 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 jacket frame 2271, thereby driving the outer jacket frame 2271 to move back and forth left and right, and then the reciprocating outer rack 2273 will drive the docking gear 2275 to rotate back and forth, so that the inner gear 2274 will reciprocate with the docking gear 2275. When the docking gear 2275 rotates back and forth, it will contact the outer jacket ring gear 225, and drive the swing frame 221 to swing back and forth with the reciprocating screw 223 as the center, and let the outer convex shaft 222 reciprocate inside the guide arc groove 213.

[0045] In this embodiment, Fig. 9 As shown, the movable part 230 includes a movable frame 231, a limiting slider 232 slidably connected to the inside of the limiting slide groove 2210, and a plurality of cooling fans 233 fixedly connected to the inside of the movable frame 231 by bolts. The limiting slider 232 is sleeved on the outer side of the reciprocating screw 223 and rotates with it, allowing the movable frame 231 to reciprocate, thereby increasing the coverage range of the cooling fan 233.

[0046] Furthermore, after the reciprocating screw 223 rotates, it drives the limiting slider 232 and the movable frame 231 to move back and forth inside the swing frame 221, thereby increasing the coverage range of the cooling fan 233. When the swing frame 221 swings back and forth with the reciprocating screw 223 as the center, the airflow distribution of the cooling fan 233 is optimized.

[0047] In this embodiment, Fig.10As shown, the spray device 240 includes a water pipe 241, a plurality of spray heads 242 regularly distributed on the outside of the water pipe 241, a cross external pipe 243 arranged at both ends of the water pipe 241, a sealing rod 245 slidably connected to the inside of the longitudinal tube of the cross external pipe 243, and a movable horizontal plate 244 arranged at the bottom end of the sealing rod 245. The inside of the cross external pipe 243 is provided with a water hole 2450 that passes through the left and right sides. The movable horizontal plate 244 is sleeved on the outside of the outer convex shaft 222. When the outer convex shaft 222 moves with the swing frame 221, the movable horizontal plate 244 also moves up and down accordingly, and periodically allows water to flow from the cross external pipe 243 into the inside of the water pipe 241.

[0048] Specifically, the spray head 242 is threadedly connected to the outside of the water pipe 241, one end of the cross external tube 243 is clamped and fixed to the inside of the water pipe 241, and the other end is connected to the water supply pipe, the movable horizontal plate 244 is slidably connected to the inside of the placement groove 211 and is provided with an inner through hole 2440 for increasing the moving range of the outer convex shaft 222, the sealing rod 245 is clamped and fixed to the inside of the movable horizontal plate 244, and the aperture of the inner through hole 2440 is adapted to the inner diameter of the cross external tube 243.

[0049] Furthermore, during the reciprocating movement of the outer convex shaft 222, the position of contact with the inner through hole 2440 inside the movable horizontal plate 244 is constantly changing, thereby driving the movable horizontal plate 244 to reciprocate up and down, and then allowing the sealing rod 245 to slide up and down inside the longitudinal tube of the cross external tube 243. When the sealing rod 245 moves to the highest position, the water hole 2450 has the same diameter as the horizontal tube of the cross external tube 243, and the water flow of the external water pipe enters the interior of the water pipe 241, and passes through a plurality of spray heads 242, and then sprays water mist onto the mold of the mold mounting frame 140, thereby cooperating with the heat dissipation fan 233 to accelerate the cooling time of the mold.

[0050] The present invention also provides a rotational molding method for producing parts of a children's amusement slide, using the above-mentioned rotational molding device for producing parts of a children's amusement slide, comprising the following steps: S1. First, the operator pours plastic powder into the interior of the slide component mold, fixes the mold inside the mold placement frame 140 in the mold placement mechanism 100, and pushes the mold placement mechanism 100 to move toward the heating box through the track set on the ground and the external cylinder. After the mold placement frame 140 is pushed into the interior of the heating box, the first driving motor 150 is started to drive the swing cantilever 130 to rotate, so that the plastic powder is melted and covers the interior of the mold; S2, after the slide parts in the mold are formed, the mold placement frame 140 is controlled to leave the interior of the heating box and move to the top of a group of heat dissipation mechanisms 200; S3, then, the cooling fan 233 in the moving part 230 and the second driving motor 226 in the swinging device 220 are started simultaneously, and the reciprocating screw rod 223 is driven to rotate when the second driving motor 226 rotates; S4, after the reciprocating screw rod 223 rotates, it drives the limit slider 232 and the moving frame 231 to move back and forth inside the swing frame 221, thereby increasing the coverage of the cooling fan 233 and optimizing the distribution of the airflow; S5. At the same time, the rotating reciprocating screw 223 drives the arc gear 2270 to rotate. When the arc gear 2270 rotates, it contacts the inner racks 2272 at the upper and lower ends of the outer casing 2271 in turn, and drives the outer casing 2271 to move back and forth, and then the reciprocating outer rack 2273 drives the docking gear 2275 to reciprocate, so that the inner gear 2274 reciprocates with the docking gear 2275; S6, when the docking gear 2275 reciprocates, it will collide with the outer ring gear 225, driving the swing frame 221 to reciprocate with the reciprocating screw rod 223 as the center, and the outer convex shaft 222 reciprocates inside the guide arc groove 213, thereby continuously changing the angle of the airflow blown out by the cooling fan 233; S7, during the reciprocating movement of the outer convex shaft 222, the position of the contact with the inner through hole 2440 inside the movable horizontal plate 244 is constantly changing, thereby driving the movable horizontal plate 244 to reciprocate up and down, and then allowing the sealing rod 245 to slide up and down inside the longitudinal tube of the cross external tube 243; S8, when the sealing rod 245 moves to the highest position, the water hole 2450 has the same diameter as the cross pipe 243, so that the water flow of the external water pipe enters the interior of the water pipe 241, and then sprays water mist to the mold of the mold placement frame 140 through a plurality of spray heads 242, thereby cooperating with the cooling fan 233 to accelerate the cooling time of the mold; S9. After that, after the mold is completely cooled, the operator takes the mold out of the mold placement frame 140 and takes out the slide parts inside the mold for storage.

[0051] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A rotational molding device for producing parts for children's amusement slides, comprising a mold placement mechanism (100) and a heat dissipation mechanism (200) disposed on the left and right sides of the mold placement mechanism (100), wherein the mold placement mechanism (100) comprises 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; Features: The heat dissipation mechanism (200) comprises a fixed frame (210), a swing device (220) arranged inside the fixed frame (210), a moving part (230) that moves back and forth inside the swing device (220), and a spray device (240) arranged at the top of the fixed frame (210); The swing device (220) comprises a swing frame (221), an outer protruding shaft (222) disposed on the outer side walls at both ends of the swing frame (221), a reciprocating screw (223) which drives the moving part (230) to move back and forth in the swing frame (221) through its own rotation to increase the coverage of the moving part (230), a limiting ring body (224) sleeved on the outer side of the reciprocating screw (223), an outer sleeve ring gear (225) sleeved on the outer side of the limiting ring body (224), a second driving motor (226) which drives the reciprocating screw (223) to rotate, and a transmission part (227) sleeved on the outer side of the end of the reciprocating screw (223); The transmission part (227) comprises an arc-edge gear (2270), an outer casing frame (2271) that reciprocates left and right as the arc-edge gear (2270) rotates, and an inner gear (2274) that reciprocates as the outer casing frame (2271) moves. When the inner gear (2274) reciprocates, it drives the outer casing ring gear (225) meshing with it to rotate, thereby driving the fixed angle of the swing frame (221) to continuously change. The spray device (240) comprises a water pipe (241), a plurality of spray heads (242) regularly distributed on the outside of the water pipe (241), a cross external pipe (243) arranged at both ends of the water pipe (241), a sealing rod (245) slidably connected to the inside of the longitudinal pipe of the cross external pipe (243), and a movable horizontal plate (244) arranged at the bottom end of the sealing rod (245). The inside of the cross external pipe (243) is provided with a water hole (2450) passing through left and right. The movable horizontal plate (244) is sleeved on the outside of the outer convex shaft (222). When the outer convex shaft (222) moves with the swing frame (221), the movable horizontal plate (244) also moves up and down accordingly, and periodically allows water to flow from the cross external pipe (243) into the inside of the water pipe (241).

2. The rotational molding device for producing parts of children's amusement slides according to claim 1, characterized in that: The mold placement mechanism (100) further comprises a fixed base plate (110), a lifting frame (120) fixedly connected to the top surface of the fixed base plate (110) by bolts, and the swing cantilever (130) is rotatably connected to the inside of 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 material is evenly covered inside the mold.

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

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

5. The rotational molding device for producing parts of children's amusement slides according to claim 4, characterized in that: The limiting ring body (224) is fixedly connected to the outer wall of the swing frame (221) by means of bolts, the size of the inner side of the limiting ring body (224) matches the size of the reciprocating screw (223), the outer ring teeth (225) are fixedly connected to the outer wall of the limiting ring body (224) by means of a bayonet, and the second drive motor (226) is fixedly connected to the outer wall of the fixed frame (210) by means of bolts, and the output shaft is coaxially connected to the reciprocating screw (223).

6. The rotational molding device for producing parts of children's amusement slides according to claim 5, characterized in that: The arc gear (2270) is fixedly connected to the end position of the reciprocating screw (223) by a bayonet pin, and the outer jacket frame (2271) is slidably connected to the inside of the placement groove (211). The upper and lower end frame walls of the outer jacket frame (2271) are welded with inner racks (2272) meshing with the arc gear (2270), and the top surface of the outer jacket frame (2271) is welded with outer racks (2273). When the arc gear (2270) rotates with the reciprocating screw (223), the outer annular racks respectively contact the inner racks (2272) on the upper and lower sides, thereby driving the outer jacket frame (2271) to move left and right.

7. The rotational molding device for producing parts of children's amusement slides according to claim 6, characterized in that: The transmission part (227) further comprises a docking gear (2275) parallel to the internal gear (2274) and a connecting rod (2276) clamped between the internal gear (2274) and the docking gear (2275); when the outer casing frame (2271) moves left and right, the internal gear (2274) drives the docking gear (2275) to rotate back and forth via the connecting rod (2276), and drives the overall position of the swing frame (221) to swing continuously via the outer casing ring gear (225).

8. The rotational molding device for producing parts of children's amusement slides according to claim 7, characterized in that: The movable part (230) comprises a movable frame (231), a limiting slider (232) slidably connected to the inside of the limiting slide groove (2210), and a plurality of cooling fans (233) fixedly connected to the inside of the movable frame (231) by bolts. The limiting slider (232) is sleeved on the outside of the reciprocating screw rod (223) and rotates with the reciprocating screw rod, thereby allowing the movable frame (231) to reciprocate, thereby increasing the coverage range of the cooling fans (233).

9. The rotational molding device for producing 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 cross external pipe (243) is fixedly connected to the inside of the water pipe (241) and the other end is connected to the water supply pipe; the movable horizontal plate (244) is slidably connected to the inside of the placement groove (211) and is provided with an inner through hole (2440) for increasing the moving range of the outer convex shaft (222); the sealing rod (245) is fixedly connected to the inside of the movable horizontal plate (244); the diameter of the inner through hole (2440) is matched with the inner diameter of the cross external pipe (243).

10. A rotational molding method for producing parts for children's amusement slides, using the rotational molding device for producing parts for children's amusement slides according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, an operator pours plastic powder into the interior of a slide component mold, fixes the mold inside a mold placement frame (140) in a mold placement mechanism (100), and pushes the mold placement mechanism (100) toward a heating box through a track provided on the ground in conjunction with an external cylinder. After the mold placement frame (140) is pushed into the interior of the heating box, a first drive motor (150) is started to drive the swing cantilever (130) to rotate, so that the plastic powder is melted and covers the interior of the mold; S2, after the slide parts in the mold are formed, the mold placement frame (140) is controlled to leave the interior of the heating box and move to the top of a group of heat dissipation mechanisms (200); S3, then, simultaneously starting the cooling fan (233) in the moving part (230) and the second driving motor (226) in the swinging device (220), so that the reciprocating screw rod (223) is driven to rotate when the second driving motor (226) rotates; S4, after the reciprocating screw rod (223) rotates, it drives the limit slider (232) and the movable frame (231) to move back and forth inside the swing frame (221), thereby increasing the coverage of the cooling fan (233) and optimizing the distribution of the airflow; S5. At the same time, the rotating reciprocating screw (223) drives the arc gear (2270) to rotate. When the arc gear (2270) rotates, it contacts the inner racks (2272) at the upper and lower ends of the outer casing (2271) in turn, thereby driving the outer casing (2271) to move back and forth, and then the reciprocating outer rack (2273) drives the docking gear (2275) to rotate back and forth, thereby causing the inner gear (2274) to rotate back and forth along with the docking gear (2275); S6, when the docking gear (2275) reciprocates, it will collide with the outer ring gear (225), driving the swing frame (221) to reciprocate with the reciprocating screw rod (223) as the center of the circle, and the outer convex shaft (222) reciprocates inside the guide arc groove (213), thereby continuously changing the angle of the airflow blown out by the heat dissipation fan (233); S7, during the reciprocating movement of the outer convex shaft (222), the position of the contact with the inner through hole (2440) inside the movable horizontal plate (244) is constantly changed, thereby driving the movable horizontal plate (244) to reciprocate up and down, thereby allowing the sealing rod (245) to slide up and down inside the longitudinal tube of the cross external tube (243); S8, when the sealing rod (245) moves to the highest position, the water hole (2450) has the same diameter as the cross pipe of the cross external pipe (243), so that the water flow of the external water pipe enters the interior of the water pipe (241), and then sprays water mist toward the mold of the mold placement frame (140) through a plurality of spray heads (242), thereby cooperating with the heat dissipation fan (233) to accelerate the cooling time of the mold; S9. After that, after the mold is completely cooled, the operator takes the mold out of the mold placement frame (140), and takes out the slide parts inside the mold for storage.

Images