Split lower mold core

Abstract

The present application belongs to the technical field of swivel mould, especially to the split lower mould core of swivel mould. The existing split lower mould core adopts sudden cooling measures, which cannot form gradient cooling, leading to excessive residual thermal stress of the product after demoulding. The present application proposes the following scheme, including: a mould core body, a heat dissipation groove is arranged at the bottom of the mould core body; a mounting ring is arranged in the heat dissipation groove; and a discharge pipe is arranged on the mounting ring. The split lower mould core of swivel mould disclosed in the present application utilizes the staged shrinkage of the corrugated air bag in the heat dissipation groove to gradually increase the immersion amount of cooling water, finally completes the overall cooling mode, realizes the temperature drop curve of slow cooling start and gradual enhancement, avoids the inconsistent inside and outside shrinkage of the product due to instantaneous rapid cooling, fundamentally greatly reduces the residual temperature stress inside the product after demoulding, effectively prevents the warping, micro-cracking and loose defects of the workpiece, and improves the yield.

Description

Technical Field

[0001] This invention relates to the field of rotating mold technology, and more particularly to a split lower mold core for rotating molds. Background Technology

[0002] In the field of rotary molds, in order to reduce the processing difficulty of the mold core, save the cost of high-end mold steel and facilitate later maintenance and replacement, the split lower mold core structure is now widely used. This structure is usually assembled by combining the central insert core and the outer mold sleeve. The lower mold core is generally equipped with a circulating cooling water channel inside or at the bottom. By introducing the cooling medium, the forming part is forced to cool down, so as to control the mold temperature and shorten the forming cycle.

[0003] Existing water channels are mostly straight through holes drilled along the mold core axis. After the cooling medium enters, the heat exchange in the inlet area is intense, causing a sudden drop in local temperature, while the far end area remains at a high temperature. This intense non-uniform temperature drop creates a large instantaneous temperature difference in the product wall thickness direction and axial direction, resulting in inconsistent internal shrinkage. Although forced rapid cooling shortens the parting time, severe temperature stress will accumulate inside the product after demolding, which can easily cause warping, micro-porosity, or even thermal cracking of the part, seriously reducing the dimensional accuracy and service life of rotating products. Summary of the Invention

[0004] This invention discloses a split lower mold core for rotating molds, aiming to solve the technical problem in the prior art where existing split lower mold cores use abrupt cooling measures, which cannot form a gradient cooling, resulting in excessive residual thermal stress after product demolding.

[0005] The present invention proposes a split lower mold core for rotating molds, comprising: The mold core body has a heat dissipation groove at its bottom; Mounting ring, wherein the mounting ring is disposed within the heat dissipation groove; A discharge pipe, wherein the discharge pipe is disposed on the mounting ring; A delivery pipe, wherein the delivery pipe is disposed on the mounting ring; An overflow pipe is provided on the upper side of the mounting ring, and a discharge pipe is connected to the overflow pipe; A stepped cooling module is provided, wherein the stepped cooling module is disposed in a heat dissipation groove, and the stepped cooling module includes a corrugated air bag, and an arc-shaped component is provided on the outside of the corrugated air bag, the bottom of the arc-shaped component being fixedly connected to the upper side of the mounting ring. A sealing module is mounted on the mounting ring, and the sealing module includes a docking ring and two sealing rings.

[0006] In a preferred embodiment, the stepped cooling module further includes: The mounting slot is set on the guide frame. The bottom of the corrugated airbag is fixedly connected to the bottom inner wall of the mounting slot. The guide frame and the mounting ring are provided with the same guide pipe, which is connected to the corrugated airbag. An arc-shaped component is located on the upper side of the corrugated airbag, and the outer side of the arc-shaped component is slidably connected to the inner wall of the mounting groove. Two shaping plates are respectively set on the outside of the corrugated airbag, and the upper side of each shaping plate is fixedly connected to the bottom of the arc-shaped part. Two shaping plates are slidably connected to the outside of two shaping plates. Two shaping plates (3) are slidably connected to the outside of two shaping plates (2), and the bottom of each shaping plate (3) is fixedly connected to the bottom inner wall of the mounting groove.

[0007] The stepped cooling module also includes: Multiple limiting grooves are respectively set on one side of the two shaping plates one and two shaping plates two; Two movable columns, both of which are slidably connected to the arc-shaped component; Multiple reversing pins are respectively set on two movable columns, and the bottom of each reversing pin is fixedly connected to the upper side of the arc-shaped component. Multiple springs are arranged around the outside of multiple reversing pins. One end of each spring is fixedly connected to the outside of the movable column on the same side, and the other end of each spring is fixedly connected to the upper side of the arc-shaped part.

[0008] The stepped cooling module also includes: Two external frames are respectively set outside the two movable columns, and both external frames are located below the arc-shaped component; Two triangular blocks, each set on one of the two external frames; Two locking clips are provided on the outside of the guide frame. Both locking clips are movably connected to the outside of the guide frame. The outside of the two locking clips is fixedly connected to the outside of the guide frame. One end of each locking clip is engaged with the inner wall of the two limiting grooves. Two springs are provided, both of which are located on the outside of the guide frame. One end of each spring is fixedly connected to the outside of the boss on the same side, and the other end of each spring is fixedly connected to the outside of the locking clip on the same side.

[0009] The stepped cooling module also includes: Two transmission components are respectively located at the ends of the two locking clips that are away from the limiting grooves; Two winding rollers are provided, both of which are located outside the overflow pipe. Each winding roller is movably connected to a support frame, and the support frame is fixedly connected to the outside of the guide frame. Two rotary motors are mounted on the guide frame, and the output ends of the two rotary motors are respectively connected to one side of the two winding rollers through couplings; Two carbon fiber threads are respectively set on two winding rollers, and the ends of the two carbon fiber threads away from the winding rollers are fixedly connected to the bottom of the movable column on the same side.

[0010] In a preferred embodiment, the enclosed module further includes: Two annular grooves are respectively set on the outer and inner walls of the mounting ring, and two sealing rings are respectively set in the two annular grooves. The outer side of the sealing rings is in contact with the inner wall of the heat dissipation groove. Two annular grooves are respectively set on the outer and inner walls of the mounting ring, and annular airbags are set in both annular grooves.

[0011] The enclosed module also includes: Two sealing rings are respectively set on the outside of the two annular airbags. The outside of each sealing ring is slidably connected to the inner wall of the annular groove on the same side. The side of the sealing ring away from the mounting ring is in contact with the inner wall of the heat dissipation groove. The bottom of the mounting ring is in contact with the upper side of the docking ring. The docking ring has multiple small holes, and the inner walls of the multiple small holes are slidably connected to the outside of the discharge pipe, the delivery pipe and the guide pipe respectively.

[0012] The enclosed module also includes: Multiple slots are provided on the inner wall of the mold core body; Multiple reserved slots are provided on the docking ring.

[0013] The enclosed module includes: Multiple limit cards are respectively disposed in multiple reserved slots, and the inner wall of each reserved slot is movably connected to the outside of the limit card on the same side. Multiple inclined blocks are respectively set on the outside of multiple limit cards, and the outside of the multiple limit cards are all engaged with the outside of the groove on the same side.

[0014] The enclosed module also includes: Multiple springs are respectively set in multiple reserved slots. One end of each spring is fixedly connected to the outside of the limit card on the same side, and the other end of each spring is fixedly connected to the inner wall of the reserved slot on the same side. A pressure ring is provided on a docking ring. The bottom of the docking ring has an annular opening. The inner wall of the annular opening is slidably connected to the outside of the pressure ring. The outside of multiple inclined blocks are in contact with the outside of the pressure ring. Multiple springs are arranged inside the annular opening. One end of each spring is fixedly connected to the top inner wall of the annular opening, and the other end of each spring is fixedly connected to the upper side of the pressure ring.

[0015] As can be seen from the above, the split lower mold core of the rotating mold provided by the present invention occupies the central space in the heat dissipation groove through the initial expansion of the corrugated airbag, which forces the cooling water to form only a narrow channel, carrying away only a small part of the surface heat, thus achieving slow cooling in the initial stage. Subsequently, the cooling water immersion gradually increases through the phased contraction of the airbag, and finally completes the full cooling. This temperature drop curve with slow cooling start and gradual enhancement avoids the inconsistent internal and external shrinkage caused by the sudden cooling of the product, fundamentally and significantly reducing the residual temperature stress inside the product after demolding, effectively preventing warping, micro-cracks and porosity defects of the parts, and improving the yield. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the split lower mold core of the rotating mold proposed in this invention; Figure 2 This is a schematic diagram of the stepped cooling module structure of the split lower mold core of the rotating mold proposed in this invention. Figure 3 This is a schematic diagram of the guide frame structure for the split lower mold core of the rotating mold proposed in this invention; Figure 4 This is a schematic diagram of the corrugated airbag structure of the split lower mold core of the rotating mold proposed in this invention. Figure 5 This is a schematic diagram of the movable column structure of the split lower mold core of the rotating mold proposed in this invention; Figure 6 This is a schematic diagram of the winding roller structure of the split lower die core of the rotating mold proposed in this invention; Figure 7 This is a schematic diagram of the closed module structure of the split lower mold core of the rotating mold proposed in this invention; Figure 8 This is a schematic diagram of the docking ring structure of the split lower mold core of the rotating mold proposed in this invention; Figure 9 This is a schematic diagram of the limiting card structure for the split lower mold core of the rotating mold proposed in this invention.

[0017] In the diagram: 1. Mold core body; 2. Heat dissipation groove; 3. Stepped cooling module; 301. Guide frame; 302. Mounting groove; 303. Corrugated airbag; 304. Arc-shaped component; 305. Shaping plate one; 306. Shaping plate two; 307. Shaping plate three; 308. Limiting groove; 309. Movable column; 310. Reversing pin; 311. Spring one; 312. External frame; 313. Triangular block; 314. Locking clip; 315. Transmission component; 316. Spring; 317. Carbon fiber. Fiber thread; 318. Winding roller; 4. Enclosed module; 401. Butt ring; 402. Groove; 403. Annular groove; 404. Annular groove; 405. Annular airbag; 406. Sealing ring one; 407. Sealing ring two; 408. Reserved groove; 409. Pressure ring; 410. Limiting clip; 411. Inclined block; 412. Spring two; 413. Spring three; 5. Discharge pipe; 6. Conveying pipe; 7. Overflow pipe; 8. Mounting ring; 9. Guide pipe; 10. Rotating motor. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The split-type lower mold core of the rotating mold disclosed in this invention is mainly applied to scenarios where existing split-type lower mold cores use abrupt cooling measures, which cannot form a gradient cooling, resulting in excessive residual thermal stress after product demolding.

[0020] Reference Figures 1-9 The rotating mold features a split lower mold core, including: The mold core body 1 has a heat dissipation groove 2 at its bottom; Mounting ring 8 is installed inside the heat dissipation slot 2; Discharge pipe 5 is installed on mounting ring 8; Conveying pipe 6 is mounted on mounting ring 8; Overflow pipe 7 is located on the upper side of mounting ring 8, and discharge pipe 5 is connected to overflow pipe 7; The stepped cooling module 3 is set in the heat dissipation groove 2. The stepped cooling module 3 includes a corrugated air bag 303. An arc-shaped part 304 is provided on the outside of the corrugated air bag 303. The bottom of the arc-shaped part 304 is connected to the upper side of the mounting ring 8 by bolts. The sealing module 4 is mounted on the mounting ring 8 and includes a docking ring 401 and two sealing rings 407.

[0021] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 In a preferred embodiment, the stepped cooling module 3 further includes: Mounting groove 302 is set on guide frame 301. The bottom of corrugated airbag 303 is connected to the bottom inner wall of mounting groove 302 by bolts. The guide frame 301 and mounting ring 8 are provided with the same guide pipe 9, which is connected to corrugated airbag 303. Arc-shaped component 304 is disposed on the upper side of corrugated airbag 303, and the outer side of arc-shaped component 304 is slidably connected to the inner wall of mounting groove 302. Two shaping plates 305 are respectively set on the outside of the corrugated airbag 303, and the upper side of the shaping plates 305 is connected to the bottom of the arc-shaped part 304 by bolts. Two shaping plates 306 are slidably connected to the outside of two shaping plates 305 respectively; Two shaping plates 307 are slidably connected to the outside of two shaping plates 306 respectively, and the bottom of each shaping plate 307 is bolted to the bottom inner wall of the mounting groove 302.

[0022] The stepped cooling module 3 also includes: Multiple limiting grooves 308 are respectively provided on one side of two shaping plates 305 and shaping plate 306; Two movable columns 309 are slidably connected to the arc-shaped component 304; Multiple reversing pins 310 are respectively set on two movable columns 309, and the bottom of each reversing pin 310 is connected to the upper side of the arc-shaped part 304 by bolts. Multiple springs 311 are respectively wrapped around the outside of multiple reversing pins 310. One end of each spring 311 is bolted to the outside of the movable column 309 on the same side, and the other end of each spring 311 is bolted to the upper side of the arc-shaped part 304.

[0023] The stepped cooling module 3 also includes: Two external frames 312 are respectively set outside the two movable columns 309, and the external frames 312 are both located below the arc-shaped part 304; Two triangular blocks 313 are respectively set on two external frames 312; Two locking clips 314 are provided on the outside of the guide frame 301. The outside of each locking clip 314 is rotatably connected to a boss via a bearing. The outside of the boss is connected to the outside of the guide frame 301 by bolts. One end of each locking clip 314 is engaged with the inner wall of the two limiting grooves 308 respectively. Two springs 316 are provided on the outside of the guide frame 301. One end of each spring 316 is bolted to the outside of the boss on the same side, and the other end of each spring 316 is bolted to the outside of the locking clip 314 on the same side.

[0024] The stepped cooling module 3 also includes: Two transmission components 315 are respectively disposed at the ends of the two locking clips 314 away from the limiting grooves 308; Two winding rollers 318 are provided outside the overflow pipe 7. The outside of each winding roller 318 is rotatably connected to a support frame via bearings. The outside of each support frame is bolted to the outside of the guide frame 301. Two rotating motors 10 are mounted on the guide frame 301, and the output ends of the two rotating motors 10 are respectively connected to one side of the two winding rollers 318 through couplings. Two carbon fiber lines 317 are respectively set on two winding rollers 318, and the ends of the two carbon fiber lines 317 away from the winding rollers 318 are connected to the bottom of the movable column 309 on the same side by bolts.

[0025] In specific application scenarios, the stepped cooling module 3 is mainly suitable for the stepped cooling stage in the stepped cooling process. That is, the stepped cooling module 3 occupies the central space in the heat dissipation groove 2 through the initial expansion of the corrugated air bag 303, which forces the cooling water to form only a narrow channel and only removes a small part of the surface heat, thus achieving slow cooling in the initial stage. Subsequently, the air bag shrinks in stages to make way, so that the amount of cooling water immersed gradually increases, and finally completes the full cooling. This temperature drop curve with slow cooling start and gradual enhancement avoids the inconsistency between the internal and external shrinkage of the product caused by instantaneous cooling. It fundamentally reduces the residual temperature stress inside the product after demolding, effectively prevents warping, micro-cracks and porosity defects of the parts, and improves the yield. It should be noted that the corrugated airbag 303 acts as a variable-volume occupant core within the heat dissipation groove 2. In the initial stage, the expansion of the corrugated airbag 303 restricts the cooling water channel to an extremely thin annular gap, precisely constraining the amount of cooling water in contact with the inner wall of the heat dissipation groove 2 per unit time, greatly reducing the initial heat transfer coefficient and playing a thermal buffering role. As the corrugated airbag 303 gradually shrinks and deflates, the cross-sectional area of ​​the channel gradually increases, and the heat transfer capacity increases synchronously in a stepwise manner. This process achieves an adaptive match between the cooling intensity and the real-time temperature drop requirements of the mold, ensuring that the thermal field is unidirectionally and gently conducted from the surface of the heat dissipation groove 2 to the outer substrate. In the slow cooling stage, the cooling water flows along the gap between the inner wall of the heat dissipation groove 2 and the outer wall of the airbag 303, and after the water level rises to the top of the overflow pipe 7, the upper layer of hot water that has absorbed heat is automatically discharged. This creates a local microcirculation, which can first remove the high-temperature heat from the outermost layer of the two walls. This heat dissipation sequence, from the periphery to the center and from the surface to the depth, precisely targets the pain point of heat dissipation at the interface of the split lower mold core assembly, effectively alleviating the heat accumulation in the center caused by interface thermal resistance, and making the temperature distribution of the entire mold core body 1 more uniform before demolding. In the small water flow stage, the limited cooling water has more time to fully absorb heat, and the water temperature naturally rises before overflowing and being discharged, improving the utilization rate of cooling water per unit volume. At the same time, due to the slow water flow speed and small flow rate in the initial stage, the scouring stress on the inner wall of the heat dissipation groove 2 is extremely low. Combined with the later gentle immersion rather than high-pressure spraying, the risk of cracking of the inner wall of the mold due to thermal coupling impact is greatly reduced, which helps to extend the service life of the split lower mold core.

[0026] Reference Figure 7 , Figure 8 and Figure 9 In a preferred embodiment, the enclosed module 4 further includes: Two annular grooves 404 are respectively set on the outer and inner walls of the mounting ring 8, and two sealing rings 407 are respectively set in the two annular grooves 404. The outer side of the sealing rings 407 is in contact with the inner wall of the heat dissipation groove 2. Two annular grooves 403 are respectively provided on the outer and inner walls of the mounting ring 8, and annular airbags 405 are provided in each of the two annular grooves 403.

[0027] Enclosed module 4 also includes: Two sealing rings 406 are respectively disposed on the outside of the two annular airbags 405. The outer side of the sealing rings 406 is slidably connected to the inner wall of the annular groove 403 on the same side. The side of the sealing rings 406 away from the mounting ring 8 is in contact with the inner wall of the heat dissipation groove 2. The bottom of the mounting ring 8 is in contact with the upper side of the docking ring 401. The docking ring 401 has multiple fine holes, and the inner walls of the multiple fine holes are slidably connected to the outside of the discharge pipe 5, the conveying pipe 6 and the guide pipe 9 respectively.

[0028] Enclosed module 4 also includes: Multiple slots 402 are provided on the inner wall of the mold core body 1; Multiple reserved slots 408 are provided on the docking ring 401.

[0029] Enclosed module 4 includes: Multiple limit cards 410 are respectively set in multiple reserved slots 408, and the inner wall of each reserved slot 408 is rotatably connected to the outside of the limit card 410 on the same side through bearings. Multiple inclined blocks 411 are respectively disposed outside multiple limit cards 410, and the outside of the multiple limit cards 410 are all engaged with the outside of the groove 402 on the same side.

[0030] Enclosed module 4 also includes: Multiple springs 412 are respectively set in multiple reserved slots 408. One end of each spring 412 is connected to the outside of the limit card 410 on the same side by bolts, and the other end of each spring 412 is connected to the inner wall of the reserved slot 408 on the same side by bolts. A pressure ring 409 is disposed on a docking ring 401. The bottom of the docking ring 401 has an annular opening. The inner wall of the annular opening is slidably connected to the outside of the pressure ring 409. The outside of multiple inclined blocks 411 are in contact with the outside of the pressure ring 409. Multiple springs 413 are provided inside the annular opening. One end of each spring 413 is bolted to the top inner wall of the annular opening, and the other end of each spring 413 is bolted to the upper side of the pressure ring 409.

[0031] In specific application scenarios, the sealing module 4 is mainly used for the sealing stage in the sealing process. Specifically, the sealing module 4 uses the heat from the mold core body 1 and cooling water to heat the annular airbag 405, causing it to expand and push the sealing ring 406 radially outward. As the mold temperature rises, the adhesion between the sealing ring and the inner wall of the heat dissipation groove 2 automatically increases, forming a positive feedback effect of "the higher the temperature, the tighter the seal." This effectively compensates for the changes in the fit clearance caused by the thermal expansion of metal parts at high temperatures, eliminating the risk of leakage after the cooling water vaporizes at high temperatures. The mounting ring 8 serves as both the closed end cap of the heat dissipation groove 2 and the carrier of the thermally sensitive drive mechanism. Integrating temperature sensing, execution, and sealing functions within the annular groove 403 eliminates the need for external sensors or power sources, utilizing waste heat for autonomous regulation. This improves the long-term sealing stability and maintenance convenience of the split mold core under high-temperature cycling.

[0032] Working principle: Before the product is demolded, the guide pipe 9 injects air into the corrugated airbag 303, causing it to inflate and expand along the inner wall of the mounting groove 302 until the arc-shaped part 304 reaches the top of the mounting groove 302. This allows the corrugated airbag 303 to occupy the space in the center of the heat dissipation groove 2. The delivery pipe 6 injects cooling water into the heat dissipation groove 2, gradually filling the gap between the heat dissipation groove 2 and the corrugated airbag 303. Due to the filling of the corrugated airbag 303, the cooling water in the heat dissipation groove 2 can only form a small flow. After the cooling water level rises above the top of the overflow pipe 7, the cooling water that has absorbed a small amount of heat overflows into the overflow pipe 7 and is discharged by the discharge pipe 5. After a certain period of cooling by the small flow, the rotation is started. The motor 10 rotates the winding roller 318 to wind the carbon fiber thread 317, causing the carbon fiber thread 317 to pull the movable column 309. This causes the movable column 309 to descend against the elastic force of the spring 311, thereby lowering the triangular block 313 on the outer frame 312 and bringing it into contact with the transmission component 315. The horizontal thrust generated by the contact between the inclined surface of the triangular block 313 and the outside of the transmission component 315 causes the locking clip 314 to overcome the elastic force of the spring 316, thus disengaging the locking clip 314 from the limiting groove 308 on the shaping plate 305 and locking the position of the shaping plate 305. This causes a certain amount of air to be discharged from the corrugated airbag 303 through the guide pipe 9, causing the corrugated airbag 303 to shrink and deflate. The motor 10 continues to drive the movable column... The arc-shaped component 304 on 309 moves downward, causing the arc-shaped component 304 to drive the first shaping plate 305 to slide on the second shaping plate 306, thus compressing the corrugated airbag 303 on the first shaping plate 305. This keeps the space of the corrugated airbag 303, except for the part connected to the first shaping plate 305, inflated. At this time, the corrugated airbag 303 makes some room in the heat dissipation groove 2, allowing more cooling water to enter the heat dissipation groove 2 for further heat dissipation. After a certain period of time, the rotating motor 10 continues to drive the winding roller 318 to wind the carbon fiber thread 317, thereby releasing the locking clip 314 on the second shaping plate 306 from the locking of the triangular block 313. This further makes room for the corrugated airbag 303 in the heat dissipation groove 2, allowing sufficient cooling water to enter. Entering the heat dissipation groove 2, thus completing the stepped heat dissipation. When using the mounting ring 8 to seal the heat dissipation groove 2, align the mounting ring 8 with the heat dissipation groove 2 and press it down, so that the sealing ring 2 407 and sealing ring 1 406 on the outside of the mounting ring 8 can fully contact the inner wall of the heat dissipation groove 2. Align the mating ring 401 with the bottom of the heat dissipation groove 2 and push it upwards gently, so that the limiting clip 410 in the reserved groove 408 is driven into the cutting groove 402 by the pushing force of the spring 2 412, thus completing the limiting of the mounting ring 8. When the stepped cooling module 3 dissipates heat from the mold core body 1, the temperature of the cooling water in the mold core body 1 and the heat dissipation groove 2 will be conducted to the mounting ring 8, thereby heating the air in the annular air bag 405 in the annular groove 403, causing the annular air bag 405 to heat up and expand.The sealing ring 406 is pushed to slide on the annular groove 403 and expand outward, thereby making it fit more tightly against the inner wall of the heat dissipation groove 2, achieving a seal on the heat dissipation groove 2.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A split-type lower mold core for a rotating mold, characterized in that, include: The mold core body (1) has a heat dissipation groove (2) at its bottom. Mounting ring (8), which is disposed in the heat dissipation groove (2); Discharge pipe (5), the discharge pipe (5) is disposed on mounting ring (8); A delivery pipe (6) is disposed on a mounting ring (8); Overflow pipe (7), the overflow pipe (7) is located on the upper side of the mounting ring (8), and the discharge pipe (5) is connected to the overflow pipe (7); A stepped cooling module (3) is set in a heat dissipation groove (2). The stepped cooling module (3) includes a corrugated airbag (303). An arc-shaped part (304) is provided on the outside of the corrugated airbag (303). The bottom of the arc-shaped part (304) is fixedly connected to the upper side of the mounting ring (8). The sealing module (4) is mounted on the mounting ring (8) and includes a docking ring (401) and two sealing rings (407).

2. The split lower mold core of the rotating mold according to claim 1, characterized in that, The stepped cooling module (3) also includes: Mounting slot (302) is set on guide frame (301). The bottom of corrugated airbag (303) is fixedly connected to the bottom inner wall of mounting slot (302). The same guide tube (9) is set on guide frame (301) and mounting ring (8). The guide tube (9) is connected to corrugated airbag (303). An arc-shaped component (304) is disposed on the upper side of the corrugated airbag (303), and the outer side of the arc-shaped component (304) is slidably connected to the inner wall of the mounting groove (302). Two shaping plates (305) are respectively disposed on the outside of the corrugated airbag (303), and the upper side of the shaping plates (305) is fixedly connected to the bottom of the arc-shaped part (304). Two shaping plates (306) are slidably connected to the outside of two shaping plates (305); Two shaping plates (307) are slidably connected to the outside of two shaping plates (306), and the bottom of each shaping plate (307) is fixedly connected to the bottom inner wall of the mounting groove (302).

3. The split lower mold core of the rotating mold according to claim 2, characterized in that, The stepped cooling module (3) also includes: Multiple limiting grooves (308) are respectively provided on one side of two shaping plates one (305) and shaping plate two (306); Two movable columns (309) are slidably connected to the arc-shaped component (304); Multiple reversing pins (310) are respectively set on two movable columns (309), and the bottom of each reversing pin (310) is fixedly connected to the upper side of the arc-shaped part (304). Multiple springs (311) are respectively wrapped around the outside of multiple reversing pins (310). One end of each spring (311) is fixedly connected to the outside of the movable column (309) on the same side, and the other end of each spring (311) is fixedly connected to the upper side of the arc-shaped part (304).

4. The split lower mold core of the rotating mold according to claim 3, characterized in that, The stepped cooling module (3) also includes: Two external frames (312) are respectively set outside the two movable columns (309), and the external frames (312) are both located below the arc-shaped part (304); Two triangular blocks (313) are respectively set on two external frames (312); Two locking clips (314) are provided on the outside of the guide frame (301). The outside of each locking clip (314) is movably connected to a protrusion. The outside of the protrusion is fixedly connected to the outside of the guide frame (301). One end of each locking clip (314) is engaged with the inner wall of the two limiting grooves (308). Two springs (316) are provided on the outside of the guide frame (301). One end of each spring (316) is fixedly connected to the outside of the boss on the same side, and the other end of each spring (316) is fixedly connected to the outside of the locking clip (314) on the same side.

5. The split lower mold core of the rotating mold according to claim 4, characterized in that, The stepped cooling module (3) also includes: Two transmission components (315) are respectively disposed at the ends of the two locking clips (314) away from the limiting groove (308); Two winding rollers (318) are provided outside the overflow pipe (7). Each winding roller (318) is movably connected to a support frame, and the outside of the support frame is fixedly connected to the outside of the guide frame (301). Two rotating motors (10) are mounted on a guide frame (301). The output ends of the two rotating motors (10) are connected to one side of two winding rollers (318) via couplings. Two carbon fiber wires (317) are respectively set on two winding rollers (318), and the ends of the two carbon fiber wires (317) away from the winding rollers (318) are fixedly connected to the bottom of the movable column (309) on the same side.

6. The split lower mold core of the rotating mold according to claim 1, characterized in that, The closed module (4) also includes: Two annular grooves (404) are respectively set on the outer and inner walls of the mounting ring (8), and two sealing rings (407) are respectively set in the two annular grooves (404). The outer side of the sealing rings (407) is in contact with the inner wall of the heat dissipation groove (2). Two annular grooves (403) are respectively set on the outer and inner walls of the mounting ring (8), and annular airbags (405) are set in both annular grooves (403).

7. The split lower mold core of the rotating mold according to claim 6, characterized in that, The enclosed module (4) also includes: Two sealing rings (406) are respectively disposed on the outside of the two annular airbags (405). The outside of the sealing rings (406) is slidably connected to the inner wall of the annular groove (403) on the same side. The side of the sealing rings (406) away from the mounting ring (8) is in contact with the inner wall of the heat dissipation groove (2). The bottom of the mounting ring (8) is in contact with the upper side of the docking ring (401). Multiple fine holes are opened on the docking ring (401). The inner walls of the multiple fine holes are slidably connected to the outside of the discharge pipe (5), the conveying pipe (6) and the guide pipe (9).

8. The split lower mold core of the rotating mold according to claim 7, characterized in that, The closed module (4) also includes: Multiple slots (402) are provided on the inner wall of the mold core body (1); Multiple reserved slots (408) are provided on the docking ring (401).

9. The split lower mold core of the rotating mold according to claim 8, characterized in that, The closed module (4) includes: Multiple limit cards (410) are respectively disposed in multiple reserved slots (408), and the inner wall of each reserved slot (408) is movably connected to the outside of the limit card (410) on the same side. Multiple inclined blocks (411) are respectively disposed outside multiple limit cards (410), and the outside of the multiple limit cards (410) are all engaged with the outside of the groove (402) on the same side.

10. The split lower mold core of the rotating mold according to claim 1, characterized in that, The closed module (4) also includes: Multiple springs (412) are respectively set in multiple reserved slots (408). One end of each spring (412) is fixedly connected to the outside of the limit card (410) on the same side, and the other end of each spring (412) is fixedly connected to the inner wall of the reserved slot (408) on the same side. A pressure ring (409) is disposed on a docking ring (401). The bottom of the docking ring (401) has an annular opening. The inner wall of the annular opening is slidably connected to the outside of the pressure ring (409). The outside of multiple inclined blocks (411) are in contact with the outside of the pressure ring (409). Multiple springs (413) are provided inside the annular opening. One end of each spring (413) is fixedly connected to the top inner wall of the annular opening, and the other end of each spring (413) is fixedly connected to the upper side of the pressure ring (409).

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