A concrete pole centrifugal forming device

Abstract

The application discloses a concrete electric pole centrifugal forming device, and belongs to the technical field of concrete product production equipment, which comprises a rack, a turnover platform, a driving mechanism, a turnover transmission mechanism and a follow-up supporting mechanism, adopts single-hydraulic-cylinder pure mechanical linkage driving, can realize differentiated lifting adjustment of both ends of the turnover platform, and can flexibly switch the inclination angle and the inclination direction. According to the production conditions, the device can be inclined and guided at multiple angles, residual slurry in the mold can be completely discharged, manual cleaning is not needed, and the problems of incomplete slurry discharge and poor consistency of finished products of traditional equipment are solved. Meanwhile, the follow-up supporting mechanism can self-adaptively compensate for the nonlinear deviation of platform lifting, realizes gapless close fitting type supporting, and effectively eliminates the shaking of the centrifugal operation platform.

Description

Technical Field

[0001] This invention belongs to the technical field of concrete product manufacturing equipment, and particularly relates to a centrifugal molding device for concrete poles. Background Technology

[0002] Cement poles are facilities used in power and communication projects, mainly for erecting and supporting power lines, cables, and other equipment. Pole-making processes typically involve: first, preparing the raw materials needed for cement pole production; then, placing the reinforcing cage into the lower mold and pouring concrete; next, covering it with the upper mold and placing the cement pole mold in a centrifuge for centrifugation; after centrifugation, using high-temperature steam to solidify the cement pole; finally, after allowing it to stand for a period of time, opening the upper and lower molds and removing the formed cement pole.

[0003] Concrete poles rely on centrifugal molding to achieve dense concrete forming. During the centrifugal process, the tilting platform supporting the mold needs to be adjusted to a specified angle. The slope guides the excess cement slurry within the mold to flow and drain in a specific direction, ensuring uniform pole wall thickness. Existing centrifugal molding equipment platforms are mostly fixed, tilted structures. The tilt angle cannot be flexibly adjusted, and the tilt direction cannot be switched. This makes it impossible to adapt to the differentiated production needs of poles of different specifications and concrete with different slumps. It is difficult to adjust the residual slurry guide angle and direction specifically. During the centrifugal process, problems such as poor residual slurry guide and slurry residue accumulation at the pole ends are very likely to occur. The residual slurry cannot be automatically cleaned, relying entirely on manual cleaning afterward, which significantly increases labor costs, reduces the overall production efficiency of the production line, and easily leads to uneven pole wall thickness, poor finished product quality consistency, and a high defect rate.

[0004] In addition, the platform's tilting and lifting process is characterized by highly nonlinear changes, making it difficult for conventional support structures to support the bottom of the platform. This can easily cause shaking during equipment operation, and the structural stability and forming accuracy need to be improved. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, this invention provides a centrifugal molding device for concrete poles, which solves the problems of traditional centrifugal molding platforms having non-adjustable angles, inability to switch tilt directions, serious residual slurry, and poor equipment operation stability. It achieves the effects of flexible adjustment of platform posture, automatic and sufficient diversion of residual slurry, and stable equipment operation.

[0006] The technical solution adopted in this invention is as follows: a centrifugal molding device for concrete poles, comprising a frame, a tilting platform, a drive mechanism, a tilting transmission mechanism, and a follow-up support mechanism; The two ends of the flipping platform are respectively rotatably mounted on the frame; The drive mechanism is fixedly installed on the frame and located at the lower end of the tilting platform, providing a power source for the platform tilting and the linkage of the support mechanism. The flipping transmission mechanism is symmetrically arranged on both sides of the frame. Each set of the flipping transmission mechanism includes a push plate, a push rod, a sliding plate, a connecting rod, and a gear. The push plate is movably installed on the side wall of the frame and fixedly connected to the drive mechanism. The push rod is connected to both ends of the push plate and is movably installed through the side wall of the frame, allowing it to slide back and forth in a straight line along the frame. The sliding plate is fixedly installed on the push rod and moves synchronously with the push rod. The connecting rod is installed on the side wall of the sliding plate, and the gear is fixedly installed on the upper wall of the sliding plate. The flipping platform is symmetrically equipped with insert rods at both ends, and gears are fixedly installed on the insert rods. The gears and teeth are matched and meshed one-to-one. Through the gear and rack meshing transmission, the flipping platform can be precisely flipped and adjusted. The follower support mechanism is symmetrically arranged at both ends of the frame, and the follower support mechanism is fixedly connected to the connecting rod at the corresponding position; The drive mechanism and transmission components adjust the lifting height of both ends of the flipping platform, switch the platform tilt angle and tilt direction, and cooperate with the follow-up support mechanism to complete the insertion support and disengagement reset; different tilt postures of the platform correspond to the centrifugal forming of electric poles and the discharge of excess slurry, while the horizontal posture corresponds to the loading and unloading of molds.

[0007] Each set of follow-up support mechanisms includes a connecting plate, a support wedge, several rolling elements, a spring, and a locking assembly. The connecting plate is connected at both ends to two sets of connecting rods at one end of the frame. The support wedge is movably mounted on the frame and can slide horizontally along the frame. One end of the locking assembly is connected to the end of the support wedge, and the other end movably passes through the connecting plate. The spring is sleeved on the outside of the locking assembly and located between the support wedge and the connecting plate. The upper surface of the support wedge has a first inclined surface, and the lower surface of the tilting platform has a second inclined surface adapted to the first inclined surface. The rolling elements are movably embedded in the first inclined surface, reducing frictional resistance during wedge insertion and resetting. The ends of both the first and second inclined surfaces are arc-shaped transitions to avoid rigid collisions and ensure smooth mechanism operation.

[0008] The driving mechanism includes a hydraulic cylinder and a support rod. The hydraulic cylinder is fixedly mounted on the frame, and the support rod is connected to push plates symmetrically arranged on both sides of the frame. The piston rod of the hydraulic cylinder is fixedly connected to the support rod. The hydraulic cylinder drives the push plates through the support rod.

[0009] The sliding plate has a slot on its side wall that matches the insert rod. During the movement of the sliding plate, the insert rod can be movably engaged in the slot to achieve a limit. In the limited state of the slot, the teeth are precisely meshed with the upper teeth of the gear, so that the flipping platform can flip around the insert rod as the rotation center.

[0010] The locking assembly includes a threaded rod and a nut. One end of the threaded rod is fixedly connected to the side wall of the support wedge, and the other end of the threaded rod is movably disposed through the connecting plate. The nut is detachably threadedly installed on the outer end of the threaded rod that extends out of the connecting plate.

[0011] The upper wall of the frame is fixedly equipped with a support base. When the tilting platform is horizontally reset, the bottom of the tilting platform is set to fit against the support base, and the support base supports the tilting platform.

[0012] The frame has symmetrically fixed seats on its side walls, which are located at both ends of the push plate. The push rod is movably inserted through the fixed seat, and the fixed seat limits the sliding movement of the push rod and bears the working load of the push plate and the sliding plate.

[0013] The upper wall of the frame is fixedly equipped with a mounting base that matches the position of the insertion rod. The insertion rod is movably snapped into the mounting base to realize the rotational installation of the end of the flipping platform.

[0014] The flipping platform is equipped with rollers for supporting the centrifugal mold, which can stably support the centrifugal mold and adapt to the centrifugal operation of the mold rotation.

[0015] The beneficial effects of the present invention after adopting the above structure are as follows: (1) This device can adjust the lifting height of both ends of the tilting platform. Through the tilting transmission mechanism set on both sides, the tilt angle of the platform can be flexibly adjusted, and the tilt direction of the platform can be quickly switched. It can be adapted to the production conditions of different specifications of electric poles and different slump concrete, which solves the problem of poor adaptability of traditional equipment and improves the general performance of the equipment.

[0016] (2) Relying on the structural features of the platform’s multi-posture tilt adjustment, the guide angle and direction can be adjusted according to production needs during operation to guide the residual slurry inside the mold to flow fully and be discharged in a directional manner, thus completely solving the problem of residual slurry at the end of the pole, eliminating the manual slurry cleaning process, reducing labor costs, and effectively avoiding the defects of uneven pole wall thickness and poor finished product consistency, thereby improving production efficiency and finished product molding quality.

[0017] (3) The follow-up support mechanism and the transmission components are linked synchronously. The nonlinear deviation of the platform lifting height is compensated by the spring elastic structure. The arc-shaped inclined surface adaptively fits to ensure that the support surface is in contact without gaps. The locking component and elastic structure can provide more solid support, effectively suppress the shaking and displacement problems in the centrifugal operation of the equipment, and further improve the structural stability of the equipment and the forming accuracy of the pole.

[0018] (4) The inclined surface of the support wedge is fitted with rolling elements and the end arc transition structure reduces the frictional resistance during the wedge insertion and reset process, avoids mechanism jamming and rigid wear, and reduces equipment failure rate and maintenance cost. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the structure of a centrifugal molding device for concrete poles proposed in this invention. Figure 1 ; Figure 2 for Figure 1 A magnified view of a portion at point A; Figure 3 This is a schematic diagram of the structure of a centrifugal molding device for concrete poles proposed in this invention. Figure 2 ; Figure 4 This is a schematic diagram of the structure of a centrifugal molding device for concrete poles proposed in this invention. Figure 3 ; Figure 5 This is a cross-sectional view of a centrifugal forming device for concrete poles proposed in this invention. Figure 6 for Figure 5 A magnified view of a portion of point B.

[0021] In the attached drawings: 1. Frame, 2. Tilting platform, 3. Drive mechanism, 4. Tilting transmission mechanism, 5. Follow-up support mechanism, 6. Push plate, 7. Push rod, 8. Sliding plate, 9. Connecting rod, 10. Gear condition, 11. Insert rod, 12. Gear, 13. Connecting plate, 14. Support wedge, 15. Spring, 16. First inclined surface, 17. Second inclined surface, 18. Hydraulic cylinder, 19. Support rod, 20. Slot, 21. Threaded rod, 22. Nut, 23. Support seat, 24. Fixed seat, 25. Mounting seat, 26. Roller. Detailed Implementation

[0022] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] In this embodiment, refer to Figure 1 and Figure 2 A centrifugal molding device for concrete poles includes a frame 1, a tilting platform 2, a drive mechanism 3, a tilting transmission mechanism 4, and a follow-up support mechanism 5. The two ends of the tilting platform 2 are rotatably mounted on the frame 1. The tilting platform 2 is provided with rollers 26 for supporting the centrifugal mold, which can stably support the centrifugal mold and adapt to the centrifugal operation of the mold rotation. The two ends of the tilting platform 2 are symmetrically installed with insert rods 11, and gears 12 are fixedly installed on the insert rods 11. The gears 12 and the gear conditions 10 are matched and meshed one-to-one. The gears 12 and the gear conditions 10 mesh and drive to realize the precise tilting adjustment of the tilting platform 2.

[0025] In this embodiment, refer to Figure 5 The drive mechanism 3 is fixedly installed on the frame 1 and located at the lower end of the tilting platform 2, providing a power source for the platform tilting and the linkage of the support mechanism. The drive mechanism 3 includes a hydraulic cylinder 18 and a support rod 19. The hydraulic cylinder 18 is fixedly installed on the frame 1, and the support rod 19 is connected to the push plates 6 symmetrically arranged on both sides of the frame 1. The piston rod of the hydraulic cylinder 18 is fixedly connected to the support rod 19. The hydraulic cylinder 18 drives the push plates 6 through the support rod 19.

[0026] In this embodiment, refer to Figure 1 , Figure 2 and Figure 3The flipping transmission mechanism 4 is symmetrically arranged on both sides of the frame 1. Each set of the flipping transmission mechanism 4 includes a push plate 6, a push rod 7, a sliding plate 8, a connecting rod 9, and a gear condition 10. The push plate 6 is movably installed on the side wall of the frame 1 and fixedly connected to the drive mechanism 3. The push rod 7 is connected to both ends of the push plate 6 and is movably installed through the side wall of the frame 1, allowing it to slide back and forth in a straight line along the frame 1. The sliding plate 8 is fixedly installed on the push rod 7 and moves synchronously with the push rod 7. The connecting rod 9 is installed on the side wall of the sliding plate 8, and the gear condition 10 is fixedly installed on the upper wall of the sliding plate 8. The side wall of the sliding plate 8 has a slot 20 that matches the insertion rod 11. During the movement of the sliding plate 8, the insertion rod 11 can be movably engaged in the slot 20 to achieve a limit. In the limited state of the slot 20, the gear condition 10 precisely meshes with the upper gear teeth of the gear 12, so that the flipping platform 2 can flip around the insertion rod 11 as the rotation center.

[0027] In this embodiment, refer to Figure 2 , Figure 5 and Figure 6 The follower support mechanism 5 is symmetrically arranged at both ends of the frame 1. The follower support mechanism 5 is fixedly connected to the connecting rod 9 at the corresponding position. Each set of follower support mechanisms 5 includes a connecting plate 13, a support wedge 14, several rolling elements, a spring 15, and a locking assembly. The two ends of the connecting plate 13 are connected to two sets of connecting rods 9 at one end of the frame 1. The support wedge 14 is movably mounted on the frame 1 and can slide horizontally along the frame 1. One end of the locking assembly is connected to the end of the support wedge 14, and the other end movably passes through the connecting plate. 13. The spring 15 is sleeved on the outside of the locking assembly and is located between the support wedge 14 and the connecting plate 13. The upper surface of the support wedge 14 is provided with a first inclined surface 16, and the lower surface of the flipping platform 2 is provided with a second inclined surface 17 adapted to the first inclined surface 16. The rolling element is movably embedded in the first inclined surface 16, which can reduce the frictional resistance during the wedge insertion and reset process. The ends of the first inclined surface 16 and the second inclined surface 17 are both arc-shaped transitions to avoid rigid collisions and ensure smooth operation of the mechanism. The drive mechanism 3, in conjunction with the transmission components, adjusts the lifting height of both ends of the flipping platform 2, switches the platform tilt angle and tilt direction, and works with the follow-up support mechanism 5 to complete the insertion support and disengagement reset; different tilt postures of the platform correspond to the centrifugal molding of electric poles and the discharge of excess slurry, while the horizontal posture corresponds to the loading and unloading of molds.

[0028] In this embodiment, refer to Figure 2 and Figure 6The locking assembly includes a threaded rod 21 and a nut 22. One end of the threaded rod 21 is fixedly connected to the side wall of the support wedge 14, and the other end of the threaded rod 21 is movably connected through the connecting plate 13. The nut 22 is detachably threadedly installed on the outer end of the threaded rod 21 that extends out of the connecting plate 13. When the spring 15 is compressed, the threaded rod 21 gradually extends out of the connecting plate 13, and at this time, the nut 22 moves outward with the threaded rod 21. When the flipping platform 2 rotates to a preset height, the support wedge 14 gradually inserts into the lower end of the flipping platform 2. After the movement stops, the nut 22 is screwed on to fit against the connecting plate 13. When the pushing plate 6 moves in the opposite direction, the sliding plate 8 drives the support wedge 14 to be pulled out from under the flipping platform 2 through the connecting rod 9, the nut 22, and the threaded rod 21, and the flipping platform 2 falls back to its original position.

[0029] In this embodiment, refer to Figure 4 and Figure 5 The upper wall of the frame 1 is fixedly installed with a support base 23. When the tilting platform 2 is horizontally reset, the bottom of the tilting platform 2 is set against the support base 23, and the support base 23 supports the tilting platform 2. The side wall of the frame 1 is symmetrically fixedly installed with fixed bases 24. The fixed bases 24 are correspondingly set at both ends of the push plate 6. The push rod 7 is movably set through the fixed base 24. The fixed base 24 slides and limits the push rod 7 and bears the working load of the push plate 6 and the sliding plate 8. The upper wall of the frame 1 is fixedly installed with a mounting base 25 that matches the position of the insertion rod 11. The insertion rod 11 is movably snapped into the mounting base 25 to realize the rotational installation of the end of the tilting platform 2.

[0030] The specific steps are as follows: The hydraulic cylinder 18 drives the support rod 19 and the push plate 6 to perform linear reciprocating motion. The push plate 6 drives the sliding plate 8 to move synchronously through the push rods 7 on both sides. The sliding plate 8 drives the gear condition 10 and the connecting rod 9 to move accordingly.

[0031] During the movement of the sliding plate 8, the follower support mechanisms 5 at both ends of the frame 1 synchronously generate differential displacements with the sliding plate 8. The follower support mechanism 5 at one end of the frame 1 moves closer to the flipping platform 2, while the follower support mechanism 5 at the other end of the frame 1 moves away from the flipping platform 2.

[0032] At the end approaching the tilting platform 2, the connecting rod 9 drives the support wedge 14 to move downwards from the tilting platform 2, so that the first inclined surface 16 of the support wedge 14 is inserted into the lower end of the second inclined surface 17 of the tilting platform 2. As the mechanism continues to move, the support wedge 14 is stopped by the tilting platform 2 and stops moving. The connecting plate 13 continues to move with the connecting rod 9, thereby compressing the spring 15 between the support wedge 14 and the connecting plate 13. At the same time, the support wedge 14 of the follow-up support mechanism 5 at the end away from the tilting platform 2 gradually disengages from the tilting platform 2. The insertion rod 11 at this end is inserted into the slot 20. Then the gear condition 10 and the gear 12 gradually mesh and drive the gear 12 and the insertion rod 11 to rotate, thereby driving the tilting platform 2 to complete the tilting and lifting action around the mounting base 25.

[0033] When the tilting platform 2 is raised to the preset working angle, the compressed spring 15 releases its elastic potential energy, pushing the support wedge 14 to fully fit and insert under the tilting platform 2. The arc-shaped ends of the first inclined surface 16 and the second inclined surface 17 adaptively fit each other. The deformation of the spring 15 compensates for the nonlinear deviation of the height during the platform's lifting process, ensuring that the support wedge 14 and the tilting platform 2 are in tight contact. At this time, the nut 22 of the locking assembly is tightened so that the nut 22 fits against the end face of the connecting plate 13, locking the spring 15, the threaded rod 21 and the support wedge 14 into one unit, providing support force for the tilting platform 2 and effectively suppressing the shaking during high-speed centrifugal operation of the equipment.

[0034] After the centrifugation operation is completed, the movement stroke of the push plate 6 and the sliding plate 8 can be slightly adjusted by the hydraulic cylinder 18 according to the specifications of the pole and the accumulation of residual material. The differential displacement characteristics of the follow-up support mechanism 5 at both ends of the frame 1 are used to adjust the tilt angle and tilt direction of the tilting platform 2 in conjunction with the tilting transmission mechanism 4, so that the tilting platform 2 forms a multi-posture small tilting state, which drives the mold to tilt and shake at multiple angles, so as to promote the rapid and thorough drainage of residual slurry inside the mold.

[0035] After the remaining material is completely discharged, the hydraulic cylinder 18 is controlled to retract in the reverse direction, which drives the push plate 6 and the sliding plate 8 to move in the reverse direction to reset. Through the linkage of the connecting rod 9, the threaded rod 21, and the nut 22, the support wedge block 14 is pulled out from under the tilting platform 2, releasing the support limit on the tilting platform 2. The tilting platform 2 then slowly falls back in sync, finally fitting the support seat 23 of the frame 1 to complete the horizontal reset, waiting for the next mold loading and centrifugation operation.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A centrifugal molding device for concrete poles, characterized in that, It includes a frame, a tilting platform, a drive mechanism, multiple tilting transmission mechanisms, and multiple follow-up support mechanisms; The two ends of the flipping platform are respectively rotatably mounted on the frame; The drive mechanism is fixedly installed on the frame and located at the lower end of the tilting platform; The multiple sets of tilting transmission mechanisms are symmetrically arranged on both sides of the frame. Each set of tilting transmission mechanisms includes a push plate, a push rod, a sliding plate, a connecting rod, and a gear. The push plate is movably mounted on the side wall of the frame and fixedly connected to the drive mechanism. The push rod is connected to both ends of the push plate and is movably disposed through the side wall of the frame. The sliding plate is fixedly mounted on the push rod, the connecting rod is mounted on the side wall of the sliding plate, and the gear is fixedly mounted on the upper wall of the sliding plate. The multiple sets of follow-up support mechanisms are symmetrically arranged at both ends of the frame, and the follow-up support mechanisms are fixedly connected to the connecting rods at the corresponding positions; The flipping platform is symmetrically equipped with insert rods at both ends, and gears are fixedly installed on the insert rods. The gears and teeth are matched and meshed in a one-to-one correspondence. The drive mechanism, in conjunction with the flipping transmission mechanism and the follow-up support mechanism, adjusts the lifting height of both ends of the flipping platform, switches the platform tilt angle and tilt direction, and works with the follow-up support mechanism to complete the insertion support and disengagement reset; different tilt postures of the platform correspond to the centrifugal forming of the electric pole and the discharge of excess slurry, while the horizontal posture corresponds to the mold loading and unloading operation.

2. The centrifugal molding device for concrete poles according to claim 1, characterized in that, Each set of follow-up support mechanisms includes a connecting plate, a support wedge, several rolling elements, a spring, and a locking assembly. The two ends of the connecting plate are connected to two sets of connecting rods at one end of the frame, and the support wedge is movably mounted on the frame. One end of the locking assembly is connected to the end of the support wedge, and the other end is movably mounted through the connecting plate. The spring is sleeved on the outside of the locking assembly and is located between the support wedge and the connecting plate. The upper surface of the support wedge is provided with a first inclined surface, and the lower surface of the flipping platform is provided with a second inclined surface that matches the first inclined surface. The rolling elements are movably embedded in the first inclined surface. The ends of the first and second inclined surfaces are both provided with arc transitions.

3. The centrifugal molding device for concrete poles according to claim 1, characterized in that, The drive mechanism includes a hydraulic cylinder and a support rod. The hydraulic cylinder is fixedly mounted on the frame, and the support rod is connected to push plates symmetrically arranged on both sides of the frame. The piston rod of the hydraulic cylinder is fixedly connected to the support rod.

4. The centrifugal molding device for concrete poles according to claim 1, characterized in that, The sliding plate has a slot on its side wall that matches the insertion rod. During the movement of the sliding plate, the insertion rod can be movably engaged in the slot to achieve a limit position. In the limited state of the slot, the tooth condition meshes with the upper gear tooth.

5. The centrifugal molding device for concrete poles according to claim 2, characterized in that, The locking assembly includes a threaded rod and a nut. One end of the threaded rod is fixedly connected to the side wall of the support wedge, and the other end of the threaded rod is movably disposed through the connecting plate. The nut is detachably threadedly installed on the outer end of the threaded rod that extends out of the connecting plate.

6. The centrifugal molding device for concrete poles according to claim 1, characterized in that, A support base is fixedly installed on the upper wall of the frame. When the tilting platform is horizontally reset, the bottom of the tilting platform is set to fit against the support base, and the support base supports the tilting platform.

7. The centrifugal forming device for concrete poles according to claim 1, characterized in that, The frame sidewalls are symmetrically fixed with fixed seats, which are correspondingly located at both ends of the push plate. The push rod is movably inserted through the fixed seat, and the fixed seat slides and limits the push rod and bears the working load of the push plate and the sliding plate.

8. The centrifugal molding device for concrete poles according to claim 1, characterized in that, The upper wall of the frame is fixedly equipped with a mounting base that matches the position of the insertion rod, and the insertion rod is movably snapped into the mounting base.

9. The centrifugal molding device for concrete poles according to claim 1, characterized in that, The flipping platform is equipped with rollers for supporting the centrifugal mold.

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