Centrifugal casting machine

Abstract

The centrifugal casting machine comprises a rack, a casting cylinder, a diameter adjusting ring, a core supplementing rod, a diameter adjusting assembly, an axial baffle ring and a ring moving driving piece. The casting cylinder is rotationally arranged on the rack, a pouring inlet is formed in the axial end of the casting cylinder, the diameter adjusting rings are arranged in an inner cavity of the casting cylinder in a sliding mode along the rotation axis of the casting cylinder, the diameter adjusting rings and the casting cylinder are coaxially arranged, and the multiple diameter adjusting rings are arranged in a nested mode inside and outside. The core supplementing rod is arranged in an inner cavity of the casting cylinder, is located at the position far away from the pouring inlet, and is provided with the diameter adjusting ring with the smallest inner diameter in a penetrating manner; the diameter adjusting assembly is connected with the diameter adjusting ring; the axial baffle rings slide into and out of an inner cavity of the casting barrel from the pouring inlet along the rotation axis of the casting barrel, and the multiple axial baffle rings are detachably nested inside and outside; the ring moving driving piece is connected with the axial baffle ring; and the pouring pipe penetrates through the axial baffle ring with the smallest inner diameter and enters the inner cavity of the casting cylinder. The casting mold has the effect that castings with different lengths and different diameters can be manufactured.

Description

Technical Field

[0001] The present application relates to the field of metal casting, and in particular to a centrifugal casting machine. Background Art

[0002] Centrifugal casting is widely used in the casting of cylindrical pipes. During casting, the mold rotates at high speed, and then the metal liquid is injected into the mold through a guide tube. The metal liquid forms the workpiece under the action of centrifugal force. Due to the centrifugal motion, the liquid metal can fill the mold well in the radial direction and form the free surface of the casting. A cylindrical inner hole can be obtained without a core.

[0003] In the related art, since the size specifications of the mold are fixed, and under the action of centrifugal force, the wall thickness of the casting can only be changed by changing the volume of the injected molten metal, resulting in a centrifugal casting machine of one specification being unable to produce castings of different lengths and diameters. Summary of the Invention

[0004] In order to produce castings of different lengths and diameters, the present application provides a centrifugal casting machine.

[0005] The centrifugal casting machine provided in this application adopts the following technical solution: A centrifugal casting machine comprising: frame: The casting cylinder is rotatably mounted on the frame, and a pouring inlet is provided at an axial end of the casting cylinder. A diameter adjusting ring is slidably arranged in the inner cavity of the casting cylinder along the rotation axis of the casting cylinder. The diameter adjusting ring is coaxially arranged with the casting cylinder, and a plurality of the diameter adjusting rings are nested inside and outside. A core bushing is provided in the inner cavity of the casting cylinder, the core bushing is located away from the pouring inlet, and the core bushing passes through the diameter-adjusting ring with the smallest inner diameter; a diameter adjusting assembly connected to the diameter adjusting ring, and configured to move the diameter adjusting ring between a position away from the pouring inlet and a position close to the pouring inlet; An axial retaining ring is slid along the rotation axis of the casting cylinder from the casting inlet into and out of the inner cavity of the casting cylinder, and a plurality of the axial retaining rings are detachably nested inside and outside; A ring shifting driver connected to the axial retaining ring; The casting pipe passes through the axial retaining ring with the smallest inner diameter and enters the inner cavity of the casting tube.

[0006] By adopting the above technical solution, firstly, by moving the diameter adjusting rings of different outer diameters to a predetermined position close to the casting inlet, the inner diameter of the casting cavity can be changed, and by allowing the axial retaining rings of different outer diameters to abut against the diameter adjusting rings or enter the interior of the diameter adjusting rings, the length of the casting cavity can be changed, so that castings of different diameters and lengths can be produced; secondly, during the gradual formation of the casting, the axial retaining rings can be moved to gradually increase the length of the casting cavity, so that the axial density of the casting can be improved; thirdly, by changing the positional relationship between different diameter adjusting rings, the casting cavity can be made into a mountain shape, so that more diverse castings can be produced.

[0007] Preferably, the frame includes a horizontal-to-vertical conversion platform, which is rotatably arranged to switch the rotation axis of the casting cylinder between a horizontal direction and a vertical direction.

[0008] By adopting the above technical solution, it is possible to switch between horizontal centrifugation and vertical centrifugation, so that two types of castings with a length greater than a diameter or a diameter greater than a length can be produced.

[0009] Preferably, the connection structure between two adjacent axial retaining rings includes a splicing groove and a splicing block, the notch of the splicing groove is located on the outside of the axial retaining ring, and the splicing groove is set at an opening on one side away from the core rod; the splicing block is located on the inner side of the axial retaining ring, and the splicing block is embedded in the splicing groove from the opening of the splicing groove.

[0010] By adopting the above technical solution, with the help of the cooperation between the splicing groove and the splicing block, a detachable connection between two adjacent inner and outer axial retaining rings is achieved with a simple structure, while also keeping the surface of the axial retaining ring close to the core rod smooth and reducing the splicing seams.

[0011] Preferably, a ring storage suction block and a retaining ring block are provided at a position of the frame near the casting inlet, and the ring storage suction block vacuum absorbs the outer wall of the axial retaining ring with the largest outer diameter; the retaining ring block is slidably arranged along the diameter direction of the axial retaining ring, and the retaining ring block is located on the side of the ring storage suction block close to the casting inlet, and the retaining ring block abuts against the axial retaining ring; the moving ring drive is connected to the axial retaining ring with the smallest inner diameter.

[0012] By adopting the above technical solution, when multiple axial retaining rings move to the storage ring suction block, the storage ring suction block absorbs the outer wall of the axial retaining ring with the largest diameter, and at the same time the retaining ring block moves to a predetermined height, and then the axial retaining ring with the smallest diameter continues to move toward the casting tube. At this time, the axial retaining rings that are not needed on the outside will be separated from the axial retaining rings that are needed on the inside, thereby automatically changing the combination quantity of multiple axial retaining rings according to the size requirements of the casting cavity, thereby helping to improve production efficiency.

[0013] Preferably, the diameter adjusting assembly includes a mounting tube and a diameter adjusting rod, the mounting tube is located on the side of the diameter adjusting ring away from the pouring inlet, the mounting tube is rotatably penetrated on the side wall of the casting cylinder, and the length direction of the mounting tube is parallel to the movement direction of the diameter adjusting ring; one end of the diameter adjusting rod is connected to the end face of the diameter adjusting ring close to the mounting tube, and the other end is threaded through the mounting tube.

[0014] By adopting the above technical solution, the diameter adjusting rod can be extended or retracted into the mounting tube by rotating the mounting tube, so that the diameter adjusting ring can be moved in the casting tube. At the same time, with the help of the connection relationship between the mounting tube and the diameter adjusting rod, the position of the diameter adjusting ring can be stably maintained when the casting tube rotates, thereby maintaining the production quality of the casting.

[0015] Preferably, one diameter adjusting ring is connected to a plurality of diameter adjusting rods, and the plurality of diameter adjusting rods are evenly distributed in a circle around the center line of the diameter adjusting ring; a transmission sprocket is provided at the end of the mounting tube away from the diameter adjusting ring, a transmission chain is sleeved between the plurality of transmission sprockets, and a driving groove is provided on the end surface of the transmission sprocket away from the diameter adjusting rod; the frame is provided with a diameter adjusting electric cylinder and a diameter adjusting motor, the piston rod of the diameter adjusting electric cylinder is telescopically arranged along the sliding direction of the diameter adjusting ring, the housing of the diameter adjusting motor is connected to the piston rod of the diameter adjusting electric cylinder, the output shaft of the diameter adjusting motor is connected to the driving rod, and the driving rod is embedded in the driving groove.

[0016] By adopting the above technical solution, when the position of the diameter adjusting ring needs to be changed, the diameter adjusting electric cylinder moves the diameter adjusting motor until the driving rod is embedded in the driving groove. After that, the diameter adjusting motor can rotate the transmission sprocket, and the transmission sprocket then rotates other transmission sprockets through the transmission chain. Therefore, one diameter adjusting motor can make one diameter adjusting ring move stably. When the casting tube rotates, the diameter adjusting electric cylinder moves the diameter adjusting motor and allows the driving rod to disengage from the driving groove. Therefore, the diameter adjusting motor does not need to rotate with the casting tube, thereby reducing the complexity of the equipment. In addition, after the casting is completed, the diameter adjusting ring can be moved to squeeze the casting out of the casting tube to improve production efficiency.

[0017] Preferably, the casting tube is provided with an insulation component for performing supplementary heat treatment on the casting tube; each of the diameter adjusting rings is provided with an adjusting channel, the channel opening of the adjusting channel is located on the side of the diameter adjusting ring away from the pouring inlet, the two channel openings of the adjusting channel are respectively located at different radial positions, and the diameter adjusting ring is connected with a fluid replenishing component, which is used to allow fluids of different temperatures to flow through the adjusting channel.

[0018] By adopting the above technical solution, in order to make the casting denser, the cooling order of the casting should be the center, then the inside, and then the outside. Therefore, the insulation component can heat the casting tube. At the same time, the diameter adjustment rings at different positions can be filled with fluids of different temperatures to achieve extreme cooling treatment in the center, medium cooling treatment on the inside, and insulation treatment on the outside, thereby making the casting denser.

[0019] Preferably, the insulation component includes an electric heating ring, a power transmission ring and a power block. The electric heating ring is built into the casting tube, the power transmission ring is coaxially fixedly connected to the outer wall of the casting tube, the power transmission ring is connected to the electric heating ring, and the power block is arranged on the frame, and the power block is electrically connected to the outer wall contact of the power transmission ring.

[0020] By adopting the above technical solution, with the help of the cooperation between the power block and the power transfer ring, the electric heating ring can be stably heated during the rotation of the casting tube to achieve heat insulation treatment for the outside of the casting.

[0021] Preferably, the liquid replenishing assembly includes an inlet pipe, an outlet pipe, a main valve ring and a liquid connection joint, the inlet pipe is a telescopic tube structure, one of the inlet pipes cooperates with one of the regulating channels, one end of the inlet pipe is connected to the diameter adjusting ring and is connected to one of the channel openings of the regulating channel, and the other end passes through and is connected to the outer surface of the casting cylinder; the outlet pipe is a telescopic tube structure, one of the outlet pipes cooperates with one of the regulating channels, one end of the outlet pipe is connected to the diameter adjusting ring and is connected to the other channel opening of the regulating channel, and the other end passes through and is connected to the outer surface of the casting cylinder; the main valve ring is rotatably connected to the outer end surface of the casting cylinder away from the pouring inlet, one of the main valve rings cooperates with one of the diameter adjusting rings, the end surface of the main valve ring close to the casting cylinder is provided with an inlet ring groove and a liquid outlet ring groove, the inlet ring groove is connected to multiple inlet pipes, and the liquid outlet ring groove is connected to multiple outlet pipes; the liquid connection joint is provided on the frame, and the liquid connection joint is connected to the side of the main valve ring away from the casting cylinder.

[0022] By adopting the above technical solution, the main valve ring does not rotate during the rotation of the casting cylinder, and stably delivers fluids of different temperatures into the adjustment channel, so the heat difference between the diameter adjustment rings at different positions and the corresponding positions of the casting can be changed, thereby changing the heat dissipation speed at different positions of the casting.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. First, by moving the diameter-adjusting rings of different outer diameters to a predetermined position near the casting inlet, the inner diameter of the casting cavity can be changed. By allowing the axial retaining rings of different outer diameters to abut against or enter the diameter-adjusting rings, the length of the casting cavity can be changed, thereby making it possible to produce castings of different diameters and lengths. Second, during the gradual formation of the casting, the axial retaining rings can be moved to gradually increase the length of the casting cavity, thereby improving the axial density of the casting. Third, by changing the positional relationship between the different diameter-adjusting rings, the casting cavity can be made into a mountain shape, thereby making it possible to produce more diverse castings. 2. When multiple axial retaining rings move to the ring storage suction block, the ring storage suction block absorbs the outer wall of the axial retaining ring with the largest diameter, and at the same time the retaining ring block moves to a predetermined height. Then the axial retaining ring with the smallest diameter continues to move toward the casting tube. At this time, the axial retaining rings that are not needed on the outside will be separated from the axial retaining rings that are needed on the inside, thereby automatically changing the combination quantity of multiple axial retaining rings according to the size requirements of the casting cavity, thereby helping to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the centrifugal casting machine in the embodiment of the present application.

[0025] Figure 2 This is a cross-sectional view made in the embodiment of the present application to illustrate the matching structure between the diameter adjusting ring and the casting cylinder.

[0026] Figure 3 This is a schematic diagram used to illustrate the connection structure between axial retaining rings in an embodiment of the present application.

[0027] Figure 4 This is a schematic diagram showing how multiple mounting tubes are driven in an embodiment of the present application.

[0028] Figure 5 This is a schematic diagram used to illustrate the specific structure of the thermal insulation component in the embodiment of the present application.

[0029] Figure 6 This is a schematic diagram used to illustrate the specific structure of the fluid infusion component in the embodiment of the present application.

[0030] Explanation of the accompanying symbols: 1. Frame; 11. Horizontal-vertical conversion table; 12. Ring storage suction block; 13. Retaining ring block; 2. Casting cylinder; 21. Casting inlet; 3. Diameter adjusting ring; 31. Adjusting channel; 4. Core bushing; 5. Diameter adjusting assembly; 51. Mounting pipe; 52. Diameter adjusting rod; 53. Drive sprocket; 54. Drive chain; 55. Drive groove; 56. Diameter adjusting electric cylinder; 57. Diameter adjusting motor; 58. Drive rod; 6. Axial retaining ring; 61. Ring transfer drive member; 62. Splicing groove; 63. Splicing block; 7. Casting pipe; 8. Insulation assembly; 81. Electric heating coil; 82. Electric ring; 83. Power block; 9. Liquid replenishing assembly; 91. Liquid inlet pipe; 92. Liquid outlet pipe; 93. Main valve ring; 931. Liquid inlet ring groove; 932. Liquid outlet ring groove; 94. Liquid connection joint. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-6 This application is described in further detail.

[0032] The embodiment of the present application discloses a centrifugal casting machine.

[0033] Reference Figure 1 and Figure 2 The centrifugal casting machine includes a frame 1, a casting cylinder 2, a diameter adjusting ring 3, a core rod 4, a diameter adjusting assembly 5, an axial retaining ring 6 and a casting pipe 7. The casting cylinder 2 is cylindrical in shape and is coaxially rotatably arranged on the frame 1. Coaxial means that the rotation center coincides with the shape center, and a casting inlet 21 is formed at the axial end of the casting cylinder 2; the diameter adjusting ring 3 is annular and is slidably arranged in the inner cavity of the casting cylinder 2 along the rotation axis of the casting cylinder 2. The diameter adjusting ring 3 is coaxially arranged with the casting cylinder 2, and multiple diameter adjusting rings 3 are nested inside and outside. At the same time, the outer wall of the diameter adjusting ring 3 with the largest outer diameter abuts against the inner wall of the casting cylinder 2; the core rod 4 is cylindrical in shape and is fixedly arranged in the inner cavity of the casting cylinder 2. The core rod 4 is located away from the casting inlet 21. The core rod 4 passes through the diameter adjusting ring 3 with the smallest inner diameter, and the core rod 4 is always on the inner side of the diameter adjusting ring 3 with the smallest inner diameter.

[0034] Reference Figure 1 and Figure 2 The diameter adjusting component 5 is connected to the diameter adjusting ring 3. The diameter adjusting component 5 enables the diameter adjusting ring 3 to move between a position away from the pouring inlet 21 and a position close to the pouring inlet 21. By moving the diameter adjusting rings 3 of different sizes to the predetermined position close to the pouring inlet 21, the inner diameter of the casting cavity can be changed. At the same time, considering the working stability of the casting machine, in the case of forming a simple pipe casting, if the diameter adjusting ring 3 with the second largest diameter is used to form the casting cavity, the diameter adjusting ring 3 with the largest diameter will also be synchronously moved to a position close to the pouring inlet 21. Similarly, if the diameter adjusting ring 3 with the third largest diameter is used to form the casting cavity, the diameter adjusting rings 3 with the largest and second largest diameters will also be synchronously moved to positions close to the pouring inlet 21.

[0035] Reference Figure 1 and Figure 2 The axial retaining ring 6 is in the shape of a circular ring. The axial retaining ring 6 slides in and out of the inner cavity of the casting tube 2 from the pouring inlet 21 along the rotation axis of the casting tube 2. Multiple axial retaining rings 6 are nested inside and outside, and two adjacent axial retaining rings 6 are detachably connected. When the axial retaining ring 6 does not enter the inner side of the diameter adjusting ring 3, the length of the casting cavity is the length of the diameter adjusting ring 3 minus the length of the core bushing 4 extending into the inner side of the diameter adjusting ring 3. When the axial retaining ring 6 enters the inner side of the diameter adjusting ring 3, the length of the casting cavity is the distance between the axial retaining ring 6 and the core bushing 4. Therefore, the specifications of the casting cavity can be changed by means of the cooperation between the diameter adjusting ring 3 and the axial retaining ring 6; the ring transfer driver 61 is connected to the axial retaining ring 6 and is used to drive the axial retaining ring 6 to move; the pouring pipe 7 passes through the axial retaining ring 6 with the smallest inner diameter and enters the inner cavity of the casting tube 2. The pouring pipe 7 is always set corresponding to the position of the core rod 4 so that the molten metal can stably enter the casting cavities of different specifications. In addition, in this embodiment, considering the convenience of use of the equipment, the pouring pipe 7 can also be set to slide under the drive of the cylinder.

[0036] Reference Figure 1 and Figure 2 In summary, according to the structure of the casting machine of the present application, it has the following advantages. First, through the cooperation between the diameter adjusting ring 3 and the axial retaining ring 6, the length and inner diameter of the casting cavity can be changed, so castings of different diameters and lengths can be produced; second, in the process of gradual formation of the casting, the axial retaining ring 6 can be synchronously moved according to the amount of injected molten metal to gradually increase the length of the casting cavity, and at this time, the axial density of the casting can also be improved.

[0037] Reference Figure 1 and Figure 2 Thirdly, the casting cavity can also be made mountain-shaped. For example, only the second diameter adjusting ring 3 is moved to a predetermined position close to the pouring inlet 21, but the largest diameter adjusting ring 3 does not move, and the axial retaining ring 6 does not abut the second diameter adjusting ring 3. At this time, part of the casting cavity is on the inner side of the second diameter adjusting ring 3, part is between the outside of the end face of the second diameter adjusting ring 3 and the casting tube 2, and part is between the outside of the circumference of the second diameter adjusting ring 3 and the casting tube 2. At this time, the cross-section of the casting cavity will be mountain-shaped. In addition, in this case, the third diameter adjusting ring 3 can also be moved toward the direction close to the pouring inlet 21, but the third diameter adjusting ring 3 does not move out of the inner side of the second diameter adjusting ring 3. At this time, the inner side of the second diameter adjusting ring 3 will be in the shape of a stepped shaft, so the resulting castings can be more diversified.

[0038] Reference Figure 1 and Figure 3In order to achieve a detachable connection between the axial retaining rings 6 through a simple structure, it is also necessary to keep the surface of the axial retaining ring 6 close to the bushing rod 4 flat. The flatness requirement is because the surface of the axial retaining ring 6 close to the bushing rod 4 will serve as the inner surface of the casting cavity. Based on the above requirements, the following settings are made: the connection structure between two adjacent axial retaining rings 6 includes a splicing groove 62 and a splicing block 63. The splicing groove 62 is a T-shaped groove, and the notch of the splicing groove 62 is located on the outside of the axial retaining ring 6. The splicing groove 62 is opened on the side away from the bushing rod 4; the splicing block 63 is a T-shaped block, and the splicing block 63 is located on the inside of the axial retaining ring 6. The splicing block 63 is embedded in the splicing groove 62 from the opening of the splicing groove 62 to achieve a detachable connection between the two adjacent axial retaining rings 6.

[0039] Reference Figure 1 and Figure 3 In order to automatically match different numbers of axial retaining rings 6 according to the specifications of the casting cavity, the following settings are correspondingly provided. The frame 1 is provided with a storage ring suction block 12 and a retaining ring block 13 near the pouring inlet 21. The storage ring suction block 12 vacuum absorbs the outer wall of the axial retaining ring 6 with the largest outer diameter, and the retaining ring block 13 is slidably arranged along the diameter direction of the axial retaining ring 6. The retaining ring block 13 can be moved by a cylinder or by a gear rack. The retaining ring block 13 is located on the side of the storage ring suction block 12 close to the pouring inlet 21. The retaining ring block 13 is in contact with the axial retaining ring 6. At the same time, the moving ring drive 61 is connected to the axial retaining ring 6 with the smallest inner diameter. The moving ring drive 61 can adopt a cylinder structure or a linear slide structure.

[0040] Reference Figure 1 and Figure 3 Taking the four axial retaining rings 6 in the figure as an example, if two axial retaining rings 6 with the third largest and fourth largest diameters are needed, the specific operation is as follows: when multiple axial retaining rings 6 move to the ring storage suction block 12, the ring storage suction block 12 absorbs the outer wall of the axial retaining ring 6 with the largest diameter, and at the same time, the retaining ring block 13 moves to a position abutting the axial retaining rings 6 with the largest and second diameters, and then the ring moving drive 61 continues to move the axial retaining ring 6 with the smallest diameter toward the casting tube 2. At this time, the axial retaining ring 6 with the second diameter can be separated from the axial retaining ring 6 with the third diameter, thereby removing the axial retaining ring 6 that does not need to be used on the outside and retaining the axial retaining ring 6 that needs to be used on the inside, thereby realizing automatic change of the combination quantity of multiple axial retaining rings 6 according to the size requirements of the casting cavity, thereby helping to improve production efficiency.

[0041] Reference Figure 1 and Figure 2In order to change the position of the diameter adjusting ring 3 while keeping the position of the diameter adjusting ring 3 stable when the casting tube 2 rotates, the following settings are correspondingly provided: the diameter adjusting component 5 includes a mounting tube 51 and a diameter adjusting rod 52. The mounting tube 51 is a circular tube structure. The mounting tube 51 is located on the side of the diameter adjusting ring 3 away from the pouring inlet 21. The mounting tube 51 is coaxially rotated and penetrates the side wall of the casting tube 2. The length direction of the mounting tube 51 is parallel to the movement direction of the diameter adjusting ring 3. The rotation penetration can have a certain damping, that is, it is not easy for the mounting tube 51 to rotate due to vibration; one end of the diameter adjusting rod 52 is connected to the end face of the diameter adjusting ring 3 close to the mounting tube 51, and the other end is threaded through the mounting tube 51. With the above structure, the movement of the diameter adjusting ring 3 is realized by rotating the mounting tube 51. At the same time, due to the characteristics of the threaded connection, the position of the diameter adjusting ring 3 can be kept stable when the casting tube 2 rotates, thereby maintaining the production quality of the casting.

[0042] Reference Figure 1 and Figure 4 In order to automatically change the position of the diameter adjusting ring 3 and extrude the casting by moving the diameter adjusting ring 3 at the end of casting, the following settings are correspondingly provided: first, a diameter adjusting ring 3 is connected to a plurality of diameter adjusting rods 52, and the plurality of diameter adjusting rods 52 are evenly distributed circumferentially around the center line of the diameter adjusting ring 3; at the same time, a transmission sprocket 53 is provided at one end of the mounting tube 51 away from the diameter adjusting ring 3, and a transmission chain 54 is sleeved between the plurality of transmission sprockets 53; the plurality of transmission sprockets 53 here are a plurality of sprockets that cooperate with a diameter adjusting ring 3, and one of the plurality of transmission sprockets 53 is provided with a driving groove 55 on the end face away from the diameter adjusting rod 52, and the cross-sectional shape of the driving groove 55 is polygonal, such as a quadrilateral or a hexagon.

[0043] Reference Figure 1 and Figure 4 Secondly, the frame 1 is provided with a diameter adjusting electric cylinder 56 and a diameter adjusting motor 57. The piston rod of the diameter adjusting electric cylinder 56 is telescopically arranged along the sliding direction of the diameter adjusting ring 3. The housing of the diameter adjusting motor 57 is connected to the piston rod of the diameter adjusting electric cylinder 56. The output shaft of the diameter adjusting motor 57 is connected to the driving rod 58, and the driving rod 58 is embedded in the driving groove 55. It should be noted that one diameter adjusting electric cylinder 56 and one diameter adjusting motor 57 are matched with one diameter adjusting ring 3.

[0044] Reference Figure 1 and Figure 4In summary, when the position of the diameter adjusting ring 3 needs to be changed, the diameter adjusting electric cylinder 56 moves the diameter adjusting motor 57 until the driving rod 58 is embedded in the driving groove 55, and then the diameter adjusting motor 57 can rotate the transmission sprocket 53, and the transmission sprocket 53 then rotates other transmission sprockets 53 through the transmission chain 54, so one diameter adjusting motor 57 can make one diameter adjusting ring 3 move stably, and when the casting tube 2 rotates, the diameter adjusting electric cylinder 56 moves the diameter adjusting motor 57 and disengages the driving rod 58 from the driving groove 55, so the diameter adjusting motor 57 does not need to rotate with the casting tube 2, so as to reduce the complexity of the equipment. In addition, after the casting is completed, the diameter adjusting ring 3 can be moved to squeeze the casting out of the casting tube 2, so as to improve production efficiency.

[0045] Reference Figure 1 and Figure 5 Since the casting tube 2 is cold, in the absence of other interventions, the cooling speed of each part of the casting is the fastest at the outermost side, followed by the innermost side, and finally the radial center part. However, this method is not conducive to the density of the casting. Ideally, the radial center should be cooled fastest, followed by the inner side, and finally the outer side. Therefore, in order to be as close to the ideal conditions as possible, the following settings are correspondingly made. First, the casting tube 2 will be provided with an insulation component 8, and the insulation component 8 will perform supplementary heat treatment on the casting tube 2. Specifically, the insulation component 8 includes an electric heating coil 81, a power ring 82 and a power block 83. The electric heating coil 81 is built into the casting tube 2, and the power ring 82 is coaxially fixedly connected to the outer wall of the casting tube 2. The power ring 82 is connected to the electric heating coil 81, and the power block 83 is arranged on the frame 1. The power block 83 is electrically connected to the outer wall contact of the power ring 82. Then, during the rotation of the casting tube 2, the electric heating coil 81 can be stably heated to achieve heat insulation treatment for the outer side of the casting.

[0046] Reference Figure 2 and Figure 4 Secondly, each diameter adjusting ring 3 is provided with an adjusting channel 31, the channel opening of the adjusting channel 31 is located on the side away from the pouring inlet 21, and the two channel openings of the adjusting channel 31 are respectively located at different radial positions. Each adjusting channel 31 is U-shaped and extended. Each diameter adjusting ring 3 has two adjusting channels 31, and the two adjusting channels 31 are symmetrically arranged relative to the center of the diameter adjusting ring 3. At the same time, the diameter adjusting ring 3 is also connected to a fluid replenishing component 9, which is used to deliver fluids of different temperatures into the adjusting channel 31.

[0047] Reference Figure 2 、 Figure 4 and Figure 5Specifically, the liquid replenishing assembly 9 includes a liquid inlet pipe 91, a liquid outlet pipe 92, a main valve ring 93 and a liquid connection joint 94. The liquid inlet pipe 91 is a telescopic tube structure. One liquid inlet pipe 91 cooperates with an adjusting channel 31. One end of the liquid inlet pipe 91 is connected to the diameter adjusting ring 3 and is connected to one of the channel openings of the adjusting channel 31, and the other end passes through and is connected to the outer surface of the casting tube 2; the liquid outlet pipe 92 is a telescopic tube structure. One liquid outlet pipe 92 cooperates with an adjusting channel 31. One end of the liquid outlet pipe 92 is connected to the diameter adjusting ring 3 and is connected to another channel opening of the adjusting channel 31, and the other end passes through and is connected to the outer surface of the casting tube 2; the main valve ring 93 is rotatably connected to the outer end surface of the casting tube 2 away from the pouring inlet 21. One main valve ring 93 cooperates with a diameter adjusting ring 3. A liquid inlet ring groove 931 and a liquid outlet ring groove 932 are provided on the end surface of the main valve ring 93 close to the casting tube 2. The liquid inlet ring groove 931 and the liquid outlet ring groove 932 are both annular and coaxially arranged with the main valve ring 93. The liquid inlet ring groove 931 is connected to multiple liquid inlet pipes 91, and the liquid outlet ring groove 932 is connected to multiple liquid outlet pipes 92; the liquid joint 94 is fixed on the frame 1, and the liquid joint 94 is connected to the side of the main valve ring 93 away from the casting tube 2. With the help of the liquid joint 94, the main valve ring 93 can be restricted from rotating with the casting tube 2, and two liquid joints 94 are matched with one main valve ring 93, one liquid joint 94 is connected to the liquid inlet ring groove 931, and one liquid joint 94 is connected to the liquid outlet ring groove 932 to realize normal fluid circulation movement.

[0048] Reference Figure 2 、 Figure 4 and Figure 5 In summary, during the rotation of the casting tube 2, the main valve ring 93 can remain stationary and stably deliver fluids of different temperatures into the regulating channel 31, so the heat difference between the diameter regulating ring 3 at different positions and the corresponding positions of the casting can be changed, thereby changing the heat dissipation speed of different positions of the casting. Specifically, in actual operation, liquid nitrogen can be injected into the regulating channel 31 in the part matching the radial center of the casting, water can be injected into the regulating channel 31 in the part matching the inner side of the casting, and high-temperature hot oil can be injected into the part matching the outer side of the casting.

[0049] Reference Figure 1 In this embodiment, the frame 1 includes a horizontal conversion table 11, which is rotatably arranged, and all the aforementioned devices are installed on the horizontal conversion table 11, so that the axis of the casting tube 2 can be converted from a horizontal direction to a vertical direction to enable vertical centrifugal casting or horizontal centrifugal casting.

[0050] The implementation principle of a centrifugal casting machine in an embodiment of the present application is as follows: first, by moving the diameter adjusting rings 3 of different outer diameters to a predetermined position close to the pouring inlet 21, the inner diameter of the casting cavity can be changed, and by allowing the axial retaining rings 6 of different outer diameters to abut against the diameter adjusting ring 3 or enter the interior of the diameter adjusting ring 3, the length of the casting cavity can be changed, so that castings of different diameters and lengths can be produced; second, in the process of gradual formation of the casting, the axial retaining ring 6 can be moved to gradually increase the length of the casting cavity, so the axial density of the casting can be improved; third, by changing the positional relationship between different diameter adjusting rings 3, the casting cavity can also be made into a mountain shape, so that more diverse castings can be produced.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A centrifugal casting machine, characterized in that: include: Rack(1): A casting cylinder (2) is rotatably mounted on the frame (1), and a pouring inlet (21) is provided at an axial end of the casting cylinder (2): A diameter adjusting ring (3) is slidably arranged in the inner cavity of the casting cylinder (2) along the rotation axis of the casting cylinder (2); the diameter adjusting ring (3) is coaxially arranged with the casting cylinder (2); and a plurality of the diameter adjusting rings (3) are nested inside and outside. A core bushing (4) is arranged in the inner cavity of the casting cylinder (2), the core bushing (4) is located away from the pouring inlet (21), and the core bushing (4) passes through the diameter-adjusting ring (3) with the smallest inner diameter; a diameter adjustment assembly (5), connected to the diameter adjustment ring (3), and used to move the diameter adjustment ring (3) between a position away from the pouring inlet (21) and a position close to the pouring inlet (21); An axial retaining ring (6) slides in and out of the inner cavity of the casting cylinder (2) from the casting inlet (21) along the rotation axis of the casting cylinder (2), and a plurality of the axial retaining rings (6) are detachably nested inside and outside; A ring shifting drive member (61) connected to the axial retaining ring (6); The casting pipe (7) passes through the axial retaining ring (6) with the smallest inner diameter and enters the inner cavity of the casting tube (2).

2. The centrifugal casting machine according to claim 1, wherein: The frame (1) includes a horizontal-to-vertical conversion platform (11), and the horizontal-to-vertical conversion platform (11) is rotatably arranged to switch the rotation axis of the casting cylinder (2) between a horizontal direction and a vertical direction.

3. The centrifugal casting machine according to claim 1, wherein: The connection structure between two adjacent axial retaining rings (6) includes a splicing groove (62) and a splicing block (63), wherein the notch of the splicing groove (62) is located on the outside of the axial retaining ring (6), and the splicing groove (62) is opened away from the side of the core rod (4); the splicing block (63) is located on the inside of the axial retaining ring (6), and the splicing block (63) is embedded in the splicing groove (62) from the opening of the splicing groove (62).

4. The centrifugal casting machine according to claim 3, wherein: The frame (1) is provided with a ring storage suction block (12) and a retaining ring block (13) at a position close to the pouring inlet (21); the ring storage suction block (12) vacuum-adsorbs the outer wall of the axial retaining ring (6) with the largest outer diameter; the retaining ring block (13) is slidably arranged along the diameter direction of the axial retaining ring (6); the retaining ring block (13) is located on a side of the ring storage suction block (12) close to the pouring inlet (21), and the retaining ring block (13) abuts against the axial retaining ring (6); the ring transfer drive member (61) is connected to the axial retaining ring (6) with the smallest inner diameter.

5. The centrifugal casting machine according to claim 1, wherein: The diameter adjustment assembly (5) comprises a mounting tube (51) and a diameter adjustment rod (52); the mounting tube (51) is located on a side of the diameter adjustment ring (3) away from the pouring inlet (21); the mounting tube (51) is rotatably arranged to penetrate the side wall of the casting cylinder (2); the length direction of the mounting tube (51) is parallel to the movement direction of the diameter adjustment ring (3); one end of the diameter adjustment rod (52) is connected to the end face of the diameter adjustment ring (3) close to the mounting tube (51), and the other end is threadedly threaded through the mounting tube (51).

6. The centrifugal casting machine according to claim 5, characterized in that: A diameter adjusting ring (3) is connected to a plurality of diameter adjusting rods (52), and the plurality of diameter adjusting rods (52) are evenly distributed in a circumference around the center line of the diameter adjusting ring (3); a transmission sprocket (53) is provided at one end of the mounting tube (51) away from the diameter adjusting ring (3), a transmission chain (54) is sleeved between the plurality of transmission sprockets (53), and a driving groove (55) is provided on the end surface of the transmission sprocket (53) away from the diameter adjusting rod (52); the frame (1) is provided with a diameter adjusting electric cylinder (56) and a diameter adjusting motor (57), the piston rod of the diameter adjusting electric cylinder (56) is telescopically arranged along the sliding direction of the diameter adjusting ring (3), the housing of the diameter adjusting motor (57) is connected to the piston rod of the diameter adjusting electric cylinder (56), the output shaft of the diameter adjusting motor (57) is connected to a driving rod (58), and the driving rod (58) is embedded in the driving groove (55).

7. The centrifugal casting machine according to claim 1, wherein: The casting tube (2) is provided with a heat preservation component (8) for performing a heat supplement treatment on the casting tube (2); each of the diameter adjusting rings (3) is provided with an adjusting channel (31); the channel opening of the adjusting channel (31) is located on the side of the diameter adjusting ring (3) away from the pouring inlet (21); the two channel openings of the adjusting channel (31) are respectively located at different radial positions; the diameter adjusting ring (3) is connected with a fluid replenishing component (9), and the fluid replenishing component (9) is used to allow fluids of different temperatures to flow through the adjusting channel (31).

8. The centrifugal casting machine according to claim 7, wherein: The heat preservation component (8) comprises an electric heating ring (81), a power transmission ring (82) and a power block (83); the electric heating ring (81) is built into the casting tube (2); the power transmission ring (82) is coaxially fixedly connected to the outer wall of the casting tube (2); the power transmission ring (82) is connected to the electric heating ring (81); the power block (83) is arranged on the frame (1); and the power block (83) is electrically connected to the outer wall contact of the power transmission ring (82).

9. The centrifugal casting machine according to claim 7, wherein: The liquid replenishing assembly (9) comprises a liquid inlet pipe (91), a liquid outlet pipe (92), a main valve ring (93) and a liquid connection joint (94); the liquid inlet pipe (91) is a telescopic tube structure, one of the liquid inlet pipes (91) cooperates with one of the regulating channels (31), one end of the liquid inlet pipe (91) is connected to the diameter regulating ring (3) and communicates with one of the channel openings of the regulating channel (31), and the other end passes through and communicates with the outer surface of the casting cylinder (2); the liquid outlet pipe (92) is a telescopic tube structure, one of the liquid outlet pipes (92) cooperates with one of the regulating channels (31), one end of the liquid outlet pipe (92) is connected to the diameter regulating ring (3) and communicates with the other channel opening of the regulating channel (31), and the other end The main valve ring (93) is connected to the outer surface of the casting cylinder (2); the main valve ring (93) is rotatably connected to the outer end surface of the casting cylinder (2) away from the casting inlet (21); one main valve ring (93) cooperates with one diameter adjusting ring (3); the end surface of the main valve ring (93) close to the casting cylinder (2) is provided with a liquid inlet ring groove (931) and a liquid outlet ring groove (932); the liquid inlet ring groove (931) is connected to a plurality of liquid inlet pipes (91), and the liquid outlet ring groove (932) is connected to a plurality of liquid outlet pipes (92); the liquid connection joint (94) is provided on the frame (1), and the liquid connection joint (94) is connected to the side of the main valve ring (93) away from the casting cylinder (2).

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