Smelting centrifugal solidification device for precision investment casting

Abstract

The invention provides a precision investment casting smelting centrifugal solidification device. The precision investment casting smelting centrifugal solidification device comprises a fixing frame, a rotating barrel, a placing frame, a first clamping arm and a second clamping arm. When the precision investment casting smelting centrifugal solidification device provided by the invention is used, the position of the moving frame is firstly adjusted to move upwards, and the moving frame is located above the rotating barrel, so that an operator can conveniently place a shell between a first clamping arm and a second clamping arm; and a first guide wheel on the first clamping arm and a second guide wheel on the second clamping arm are clamped on the outer side of the pouring cup, and finally the placing frame is driven to move downwards, so that the shell is placed in the rotating barrel. In addition, the pouring cup can be positioned through the positions of the first guide wheel and the second guide wheel, and it is guaranteed that a plurality of pattern dies on the periphery are subjected to stable centrifugal force in the later rotating condensation process. And after condensation is completed, the section mold can be taken out through the containing frame, operation is convenient, and use is convenient and fast.

Description

Technical Field

[0001] The present invention belongs to the technical field of precision casting, and particularly relates to a centrifugal solidification device for investment precision casting melting. Background Art

[0002] In the production process of medium-temperature wax investment precision casting, usually a corresponding mold shell is first processed according to the shape of the workpiece, and then molten steel is poured into the mold shell, and precision castings are formed after the molten steel solidifies. To improve production efficiency, a pouring cup is usually connected with a runner, and a mold for forming the workpiece is connected to the periphery of the runner. If only natural solidification by gravity is used during the casting process, it is easy to cause the molten steel to fail to effectively fill into the mold, resulting in casting defects. Therefore, for some workpieces with complex structures, the method of centrifugal solidification is usually used to assist in forming. Centrifugal solidification uses a rotating rotating barrel. After adding molten steel into the mold shell, the rotation of the rotating barrel enables the molten steel located inside the mold shell to effectively fill into the mold according to the centrifugal force, improving the forming quality of the workpiece. However, currently, the mold shell is usually manually placed into the rotating barrel, and the operator usually places the mold shell into the rotating barrel by clamping the pouring cup. The clamping tooling is prone to interference with the rotating barrel, making the on-site operation inconvenient. At the same time, there are certain position errors in manual operation, and it is not convenient to place the runner on the mold shell at the axis position of the rotating barrel, resulting in inconvenience in on-site use. Summary of the Invention

[0003] An embodiment of the present invention provides a centrifugal solidification device for investment precision casting melting, aiming to solve the problem that in the prior art, during the centrifugal solidification process of investment casting, it is inconvenient to operate when placing the mold shell into the rotating barrel.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a centrifugal solidification device for investment precision casting melting, including:

[0005] A fixed frame;

[0006] A rotating barrel rotatably arranged on the fixed frame;

[0007] A placement frame installed on the fixed frame and located above the rotating barrel. The position of the placement frame on the fixed frame has the freedom to be adjusted in the vertical direction, and the placement frame can be moved into the rotating barrel.

[0008] A first clamping arm installed on the placement frame, and a first guide wheel is rotatably arranged at the end of the first clamping arm.

[0009] The second clamping arm is installed on the placement rack. Two second guide wheels are rotatably arranged at the end of the second clamping arm. The first guide wheel and the two second guide wheels form a clamping gap for clamping the pouring cup. The first clamping arm and the second clamping arm have the freedom to move synchronously in a direction of relatively approaching or relatively moving away on the placement rack. The arrangement direction of the first clamping arm and the second clamping arm is defined as the first direction.

[0010] In a possible implementation manner, a driving wheel and a driven wheel are installed on the placement rack at intervals along the first direction. A chain is meshed between the driving wheel and the driven wheel. The chain includes a first section and a second section with opposite moving directions. The first clamping arm and the second clamping arm are respectively installed on the first section and the second section.

[0011] In a possible implementation manner, transmission wheels are fixedly connected to both the driving wheel and the driven wheel. A driving wheel for driving the driving wheel and the driven wheel to rotate synchronously is also rotatably arranged on the placement rack. A driving member for driving the driving wheel to rotate is fixedly installed on the placement rack.

[0012] In a possible implementation manner, a lifting rack is slidably arranged on the fixed rack in the vertical direction. The placement rack is installed on the lifting rack, and the middle part of the placement rack is rotatably arranged on the lifting rack. The axis of the rotation shaft of the placement rack on the lifting rack is arranged in the vertical direction.

[0013] In a possible implementation manner, a driving assembly for driving the placement rack to rotate is arranged on the lifting rack. The driving assembly includes:

[0014] A first worm gear, fixedly installed on the rotation shaft of the placement rack on the lifting rack;

[0015] A first worm, rotatably arranged on the lifting rack and meshed with the first worm gear;

[0016] A power member, installed on the lifting rack, and the driving end of the power member is in transmission connection with the first worm.

[0017] In a possible implementation manner, a moving rack is slidably arranged on the fixed rack in the horizontal direction and perpendicular to the first direction. The lifting rack is installed on the moving rack, and the first clamping arm and the second clamping arm can move to the outside of the rotating barrel.

[0018] In a possible implementation, a first connecting arm is hingedly arranged at one end of the first clamping arm away from the placing rack, the first guiding wheel is rotatably arranged on the first connecting arm, a second connecting arm is hingedly arranged at one end of the second clamping arm away from the placing rack, and the second guiding wheel is rotatably arranged on the second connecting arm. When the first connecting arm and the second connecting arm swing in a relatively away direction, the first guiding wheel and the second guiding wheel can simultaneously abut against the inner wall of the rotating barrel.

[0019] In a possible implementation, a first gear is fixedly installed on the hinge shaft of the first connecting arm on the first clamping arm, a second gear in transmission connection with the first gear is rotatably arranged on the first clamping arm, a swing rod is fixedly installed on the rotating shaft of the second gear, a guiding roller is rotatably arranged at one end of the swing rod away from the second gear, a guiding groove is arranged on the placing rack along a first direction, and a reversing groove bent away from the first connecting arm is arranged in the middle of the guiding groove.

[0020] In a possible implementation, a guiding rack is freely slidably arranged on the moving rack in the vertical direction, the lifting rack includes two guiding arms slidably arranged on the guiding rack, and a supporting plate for supporting at the bottom of the guiding rack is fixedly installed at the bottom end of the guiding arm.

[0021] In a possible implementation, a threaded sleeve is rotatably arranged on the moving rack, a lead screw in threaded connection with the threaded sleeve is fixedly installed on the lifting rack, a second worm gear is fixedly installed on the outer side of the threaded sleeve, and a second worm meshing with the second worm gear is also rotatably arranged on the moving rack.

[0022] The solution shown in the embodiments of the present application, compared with the prior art, is provided with a fixing frame, on which a rotating barrel is rotatably arranged. At the top of the rotating barrel, there is an opening for placing the mold shell. At the opening of the rotating barrel, a placing rack is installed, and the placing rack can move vertically on the fixing frame. Two relatively arranged first clamping arms and second clamping arms are installed on the placing rack. At the end of the first clamping arm, a first guiding wheel is rotatably arranged, and two second guiding wheels are rotatably arranged on the second clamping arm. When the pouring cup is clamped between the first guiding wheel and the second guiding wheel, the axis of the pouring cup coincides with the axis of the rotating barrel. In the present application, during use, first adjust the position of the moving rack to move upward and be located above the rotating barrel, so as to leave enough space for placing the cast mold shell between the first clamping arm and the second clamping arm. Thus, it is convenient for the operator to place the mold shell between the first clamping arm and the second clamping arm, and clamp the outside of the pouring cup through the first guiding wheel on the first clamping arm and the second guiding wheels on the second clamping arm. Finally, drive the placing rack to move downward, so as to place the mold shell inside the rotating barrel. And the position of the first guiding wheel and the second guiding wheel can play a role in positioning the pouring cup, making the placement position of the mold shell as close as possible to the axis of the rotating barrel. During the later rotation and condensation, it is ensured that multiple molds in the circumferential direction receive a stable centrifugal force. After the condensation is completed, the mold can be taken out through the placing rack, and the operation is convenient and the use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the investment casting melting centrifugal solidification device provided by the embodiment of the present invention;

[0024] Figure 2 is a schematic installation structure diagram of the placing rack provided by the embodiment of the present invention;

[0025] Figure 3 is a schematic bottom structure diagram of the placing rack provided by the embodiment of the present invention;

[0026] Figure 4 is a schematic installation structure diagram of the driving assembly provided by the embodiment of the present invention;

[0027] Figure 5 is a schematic installation structure diagram of the first connecting arm provided by the embodiment of the present invention.

[0028] Description of the reference numerals:

[0029] 1. Fixed frame; 2. Rotating barrel; 3. Placing rack; 31. Driving wheel; 32. Driven wheel; 33. Chain; 34. Transmission wheel; 35. Driving pulley; 36. Driving member; 4. First clamping arm; 41. First guide wheel; 42. First connecting arm; 421. First gear; 422. Second gear; 423. Swing rod; 424. Guide roller; 5. Second clamping arm; 51. Second guide wheel; 52. Second connecting arm; 6. Lifting frame; 61. Guide arm; 611. Support plate; 62. Guide frame; 63. Lead screw; 7. Driving assembly; 71. First worm gear; 72. First worm; 73. Power member; 8. Moving frame; 81. Threaded sleeve; 82. Second worm gear; 83. Second worm. Detailed implementation mode

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Please refer to Figures 1 to 5 simultaneously, and a precision investment casting melting centrifugal solidification device provided by the present invention will be described. The precision investment casting melting centrifugal solidification device includes a fixed frame 1, a rotating barrel 2, a placing rack 3, a first clamping arm 4 and a second clamping arm 5. The rotating barrel 2 is rotatably arranged on the fixed frame 1; the placing rack 3 is installed on the fixed frame 1 and is located above the rotating barrel 2. The position of the placing rack 3 on the fixed frame 1 has the freedom to be adjusted in the vertical direction, and the placing rack 3 can be moved into the rotating barrel 2. The first clamping arm 4 is installed on the placing rack 3, and a first guide wheel 41 is rotatably arranged at the end of the first clamping arm 4; the second clamping arm 5 is installed on the placing rack 3, and two second guide wheels 51 are rotatably arranged at the end of the second clamping arm 5. The first guide wheel 41 and the two second guide wheels 51 form a clamping gap for clamping the sprue cup. The positions of the first clamping arm 4 and the second clamping arm 5 on the placing rack 3 have the freedom to move synchronously in the direction of relative approach or relative separation. The arrangement direction of the first clamping arm 4 and the second clamping arm 5 is defined as the first direction.

[0032] The investment casting melting and centrifugal solidification device provided in this embodiment, compared with the prior art, is provided with a fixing frame 1. A rotating barrel 2 is rotatably arranged on the fixing frame 1. An opening for placing a mold shell is arranged at the top of the rotating barrel 2. A placing rack 3 is installed at the opening of the rotating barrel 2, and the placing rack 3 can move vertically on the fixing frame 1. Two relatively arranged first clamping arms 4 and second clamping arms 5 are installed on the placing rack 3. A first guiding wheel 41 is rotatably arranged at the end of the first clamping arm 4, and two second guiding wheels 51 are rotatably arranged on the second clamping arm 5. When the sprue cup is clamped between the first guiding wheel 41 and the second guiding wheel 51, the axis of the sprue cup coincides with the axis of the rotating barrel 2. In this application, during use, first adjust the position of the moving rack 8 to move upward and be located above the rotating barrel 2, so as to leave enough space for placing the cast mold shell between the first clamping arm 4 and the second clamping arm 5. Thus, it is convenient for the operator to place the mold shell between the first clamping arm 4 and the second clamping arm 5, and clamp the outside of the sprue cup through the first guiding wheel 41 on the first clamping arm 4 and the second guiding wheels 51 on the second clamping arm 5. Finally, drive the placing rack 3 to move downward, so as to place the mold shell inside the rotating barrel 2. And the position of the first guiding wheel 41 and the second guiding wheels 51 can play a role in positioning the sprue cup, making the placement position of the mold shell as close as possible to the axis of the rotating barrel 2. During the later rotation and condensation, ensure that multiple molds around receive a stable centrifugal force. After the condensation is completed, the mold can be taken out through the placing rack 3, with convenient operation and easy use.

[0033] Specifically, in this embodiment, the outer shape of the sprue cup is a conical structure, and the first guiding wheel 41 and the second guiding wheels 51 are conical wheels adapted to the outer shape of the sprue cup.

[0034] Specifically, in this embodiment, a motor for driving the rotation of the rotating barrel 2 is fixedly installed on the fixing frame 1. A pulley arranged coaxially is fixedly installed at the bottom of the rotating barrel 2, and the driving end of the motor is in transmission connection with the pulley.

[0035] In some embodiments, the above-mentioned first clamping arm 4 and second clamping arm 5 can adopt the structure as Figure 1 、 Figure 2 shown. See Figure 1 、 Figure 2, on the placing rack 3, a driving wheel 31 and a driven wheel 32 are installed at intervals along the first direction. A chain 33 is meshed between the driving wheel 31 and the driven wheel 32. The chain 33 includes a first section and a second section with opposite moving directions. The first clamping arm 4 and the second clamping arm 5 are respectively installed on the first section and the second section. Both the driving wheel 31 and the driven wheel 32 are sprockets. The chain 33 is wound between the driving wheel 31 and the driven wheel 32 and is meshed with the driving wheel 31 and the driven wheel 32. The length directions of the first section and the second section on the chain 33 are both arranged along the first direction. And the first section and the second section are arranged in parallel at intervals. The first clamping arm 4 and the second clamping arm 5 are respectively installed on the first section and the second section. When the driving wheel 31 and the driven wheel 32 drive the chain 33 to move, the first section and the second section on the chain 33 both move in opposite directions. Thus, the first clamping arm 4 and the second clamping arm 5 can move relatively closer or farther away along the first direction and move synchronously, realizing the operation of clamping and loosening the pouring cup.

[0036] In some embodiments, the above-mentioned driving wheel 31 and driven wheel 32 can adopt structures such as Figure 2 , Figure 3 shown. Referring to Figure 2 , Figure 3 together, transmission wheels 34 are fixedly connected to both the driving wheel 31 and the driven wheel 32. A driving wheel 35 for driving the driving wheel 31 and the driven wheel 32 to rotate synchronously is also rotatably arranged on the placing rack 3. A driving member 36 for driving the driving wheel 35 to rotate is fixedly installed on the placing rack 3. The rotating shafts of the driving wheel 31 and the driven wheel 32 penetrate through the placing rack 3, and transmission wheels 34 are fixedly installed at the bottom ends of the rotating shafts of the driving wheel 31 and the driven wheel 32. When the transmission wheels 34 rotate, they can drive the driving wheel 31 and the driven wheel 32 to rotate together synchronously. A driving wheel 35 is also rotatably arranged at the bottom of the placing rack 3. The driving member 36 is a motor, and the output shaft of the driving member 36 is in transmission connection with the driving wheel 35, so as to drive the driving wheel 35 to rotate.

[0037] Preferably, in this embodiment, both the driving wheel 35 and the transmission wheels 34 are sprockets. The driving wheel 35 and the transmission wheels 34 are connected by chain 33 transmission, and the sizes and specifications of the two transmission wheels 34 are the same, and the sizes and specifications of the driving wheel 31 and the driven wheel 32 are the same, so that the driving wheel 31 and the driven wheel 32 can maintain the same rotation speed.

[0038] In some embodiments, the above-mentioned fixing frame 1 can adopt structures such as Figure 2 shown. Refer to Figure 2, a lifting frame 6 is slidably arranged on the fixing frame 1 in the vertical direction. The placing frame 3 is installed on the lifting frame 6, and the middle part of the placing frame 3 is rotatably arranged on the lifting frame 6. The axis of the rotating shaft of the placing frame 3 on the lifting frame 6 is arranged in the vertical direction. A lifting frame 6 is slidably arranged on the fixing frame 1 in the vertical direction. The middle part of the placing frame 3 is installed on the lifting frame 6, and the placing frame 3 is rotatably arranged on the lifting frame 6. When the placing frame 3 rotates on the lifting frame 6, the first clamping arm 4 and the second clamping arm 5 located on the placing frame 3 can rotate to the outside of the rotating barrel 2, so as to further facilitate the feeding and discharging of the mold shell.

[0039] Preferably, in this embodiment, the rotating shaft of the placing frame 3 on the lifting frame 6 is located above one side of the rotating barrel 2. The first clamping arm 4 and the second clamping arm 5 extend towards the direction close to the axis of the rotating barrel 2. Thus, when the placing frame 3 rotates on the lifting frame 6, the first clamping arm 4 and the second clamping arm 5 can be moved to the outside of the rotating barrel 2.

[0040] Specifically, in this embodiment, during use, the first clamping arm 4 and the second clamping arm 5 can be first rotated to the outside of the rotating barrel 2, and the height of the placing frame 3 is adjusted. The operator places the mold shell between the first guide wheel 41 and the second guide wheel 51. Then, by moving the placing frame 3 upwards, the height of the mold shell is made higher than the top of the rotating barrel 2. The mold shell is rotated to the mouth of the rotating barrel 2 by rotating the placing frame 3, and finally the height of the lifting frame 6 is lowered to place the mold shell inside the rotating barrel 2. The automatic placement of the mold shell can be realized. And when the mold shell is clamped to the placing frame 3, it can be clamped outside the rotating barrel 2, and the height of the placing frame 3 can be freely adjusted according to the on-site requirements, reducing the labor intensity of the operator.

[0041] In some embodiments, the above-mentioned placing frame 3 can adopt structures such as Figure 2 , Figure 3 and Figure 4 as shown. Refer to Figure 2 , Figure 3 and Figure 4, a driving assembly 7 for driving the placement rack 3 to rotate is provided on the lifting frame 6, and the driving assembly 7 includes a first worm wheel 71, a first worm 72 and a power piece 73. The first worm wheel 71 is fixedly mounted on the rotating shaft of the placement rack 3 on the lifting frame 6; the first worm 72 is rotatably mounted on the lifting frame 6 and is meshed with the first worm wheel 71; the power piece 73 is mounted on the lifting frame 6, and the driving end of the power piece 73 is connected to the first worm 72 by transmission. A mounting portion for mounting the placement rack 3 is provided at the bottom of the lifting frame 6, a rotating sleeve is fixedly mounted on the top of the placement rack 3, the rotating sleeve is rotatably mounted on the mounting portion, and the first worm wheel 71 is fixedly mounted on the outer side of the rotating sleeve, and a first worm 72 is rotatably mounted on the mounting portion of the lifting frame 6 and is meshed with the first worm wheel 71. The power piece 73 is a forward and reverse motor, and the driving end of the power piece 73 is connected to the first worm 72 by transmission, so that the rotation of the placement rack 3 can be controlled by the power piece 73. The position of the placement rack 3 is fixed by the self-locking structure of the first worm 72 and the first worm wheel 71 .

[0042] In some embodiments, the fixing frame 1 may be used as follows: Figure 1 , Figure 2 See also Figure 1 , Figure 2 , a mobile frame 8 is slidably arranged on the fixed frame 1 in the horizontal direction and perpendicular to the first direction, and the lifting frame 6 is installed on the mobile frame 8, and the first clamping arm 4 and the second clamping arm 5 can be moved to the outside of the rotating barrel 2. A mobile frame 8 is also slidably arranged on the fixed frame 1, and the moving direction of the mobile frame 8 on the fixed frame 1 is defined as the second direction. A lead screw 63 is rotatably arranged on the fixed frame 1, and a threaded sleeve 81 threadedly connected to the lead screw 63 is fixedly installed on the mobile frame 8. A forward and reverse motor for driving the lead screw 63 to rotate is also fixedly installed on the fixed frame 1, so that the position of the mobile frame 8 can be controlled by the forward and reverse motor. The mobile frame 8 can drive the placement frame 3 to move to the outside of the mouth of the rotating barrel 2 through the lifting frame 6. After the mold shell is placed inside the rotating barrel 2, the placement frame 3 can be raised and rotated to the outside of the rotating barrel 2, and then the placement frame 3 and the components on the placement frame 3 are driven by the mobile frame 8 to leave the mouth of the rotating barrel 2. Avoid the heat on the mold shell from affecting the service life of each component on the placement frame 3.

[0043] Preferably, in this embodiment, through the setting of the movable frame 8, the placement frame 3 can be driven to move to both sides of the rotating barrel 2 along the second direction, so that the operations of single-sided loading and single-sided blanking can be realized, and the on-site operating space can be fully utilized, which is more convenient for on-site loading and unloading operations.

[0044] In some embodiments, the first clamping arm 4 and the second clamping arm 5 can be used as follows: Figure 1 , Figure 2 See also Figure 1 ,Figure 2 One end of the first clamping arm 4 away from the placement rack 3 is hingedly provided with a first connecting arm 42, a first guide wheel 41 is rotatably arranged on the first connecting arm 42, one end of the second clamping arm 5 away from the placement rack 3 is hingedly provided with a second connecting arm 52, and a second guide wheel 51 is rotatably arranged on the second connecting arm 52. When the first connecting arm 42 and the second connecting arm 52 swing in the relatively away direction, the first guide wheel 41 and the second guide wheel 51 can be synchronously abutted against the inner wall of the rotating barrel 2. Both the first clamping arm 4 and the second clamping arm 5 extend along the second direction in the axial direction of the hinge axis on the lifting frame 6 away from the placement rack 3. A first connecting arm 42 and a second connecting arm 52 are respectively hingedly arranged at the ends of the first clamping arm 4 and the second clamping arm 5 away from the placement rack 3. The first guide wheel 41 is rotatably arranged at one end of the first connecting arm 42 away from the first clamping arm 4. The second guide wheel 51 is rotatably arranged at one end of the second connecting arm 52 away from the second clamping arm 5. When the first connecting arm 42 and the second connecting arm 52 rotate to the position where the first guide wheel 41 and the second guide wheel 51 are located between the first clamping arm 4 and the second clamping arm 5, the shell mold can be clamped by the first guide wheel 41 and the second guide wheel 51. When the first connecting arm 42 and the second connecting arm 52 rotate to the position where the first guide wheel 41 and the second guide wheel 51 are located outside the first clamping arm 4 and the second clamping arm 5, the first guide wheel 41 and the second guide wheel 51 can be abutted against the inner wall of the rotating barrel 2, so that the rotating barrel 2 can be guided, and the stability of the rotating barrel 2 during the working process can be ensured. Thus, the first guide wheel 41 and the second guide wheel 51 can not only play a guiding role but also play a role in clamping the shell mold.

[0045] In some embodiments, the above-mentioned first connecting arm 42 can adopt a structure as shown in Figure 3 , Figure 5 . See also Figure 3 , Figure 5, a first gear 421 is fixedly installed on a hinge shaft of the first connecting arm 42 on the first clamping arm 4. A second gear 422 is rotatably arranged on the first clamping arm 4 and is in transmission connection with the first gear 421. A swing rod 423 is fixedly installed on a rotating shaft of the second gear 422. A guide roller 424 is rotatably arranged at one end of the swing rod 423 away from the second gear 422. A guide groove is arranged on the placing rack 3 along a first direction in the length direction, and a reversing groove is arranged in the middle of the guide groove and bends away from the first connecting arm 42. One end of the first connecting arm 42 away from the first guide wheel 41 is fixedly installed with a hinge shaft, and the first gear 421 is fixedly installed on the hinge shaft. A second gear 422 is meshed on one side of the first gear 421, and the second gear 422 is rotatably arranged on the first clamping arm 4. When the second gear 422 rotates, it can synchronously drive the first gear 421 to rotate, and the second gear 422 has the same size and specifications as the second gear 422. One end of the swing rod 423 is fixedly installed on the rotating shaft of the second gear 422 or on the second gear 422, and the length direction of the swing rod 423 is arranged along the radial direction of the second gear 422. When the swing rod 423 swings relative to the first clamping arm 4, it can drive the second gear 422 to rotate synchronously. A guide roller 424 is rotatably arranged at one end of the swing rod 423 away from the second gear 422, and the guide roller 424 rolls inside the guide groove. A reversing groove is arranged in the middle of the guide groove in a bent manner. In this application, when in use, when the first clamping arm 4 moves along the first direction, the guide roller 424 moves inside the guide groove along with the first clamping arm 4. When the guide roller 424 moves to the reversing groove, it will drive the swing rod 423 to swing relative to the first clamping arm 4 through the guidance of the reversing groove, thereby driving the second gear 422 to rotate. And when the guide roller 424 passes through the reversing groove, the guide roller 424 moves to the other section of the guide groove, causing the swing rod 423 to rotate 180 degrees, so that the second gear 422 drives the first gear 421 to rotate 180 degrees together. Thus, the position state of the first connecting arm 42 can be switched during the movement of the first clamping arm 4 along the first direction. And when the first clamping arm 4 moves along the direction away from the axis of the rotating barrel 2, the first connecting arm 42 swings to the position where the first guide wheel 41 is located outside the first clamping arm 4, thereby playing a role in guiding the rotating barrel 2. When the first clamping arm 4 moves along the direction close to the axis of the rotating barrel 2, the first connecting arm 42 swings to the position where the second guide wheel 51 is located on the inner wall of the first clamping arm 4, thereby playing a role in clamping the mold shell.

[0046] Specifically, in this embodiment, the installation method of the second clamping arm 5 on the placing rack 3 is the same as that of the first clamping arm 4 on the placing rack 3, and the installation method of the second connecting arm 52 on the second clamping arm 5 is the same as that of the first connecting arm 42 on the first clamping arm 4.

[0047] In some embodiments, the above-mentioned lifting frame 6 can adopt, for example Figure 1, Figure 2 The structure shown. Refer to Figure 1 , Figure 2 . On the moving frame 8, a guiding frame 62 is freely slidably arranged in the vertical direction. The lifting frame 6 includes two guiding arms 61 slidably arranged on the guiding frame 62. At the bottom end of the guiding arm 61, a supporting plate 611 for supporting on the bottom of the guiding frame 62 is fixedly installed. A guiding frame 62 is slidably arranged in the vertical direction on the moving frame 8, and the lifting frame 6 is slidably arranged in the vertical direction on the guiding frame 62. When the lifting frame 6 moves upward, the supporting plate 611 at the bottom of the guiding arm 61 can support on the guiding frame 62, so as to drive the guiding frame 62 to move upward together, avoiding interference between the guiding frame 62 and the rotating barrel 2 during the movement of the moving frame 8. When the lifting frame 6 moves downward, the guiding frame 62 will move downward together with the guiding arm 61 until the guiding frame 62 cannot move downward on the moving frame 8. Then the lifting frame 6 can continue to move downward relative to the guiding of the guiding frame 62 to increase the guiding stroke during the up and down movement of the lifting frame 6 and improve the stability of the lifting frame 6 during the movement.

[0048] In some embodiments, the above-mentioned moving frame 8 can adopt the structure as shown in Figure 1 , Figure 2 . Refer to Figure 1 , Figure 2 . A threaded sleeve 81 is rotatably arranged on the moving frame 8. A lead screw 63 threadedly connected to the threaded sleeve 81 is fixedly installed on the lifting frame 6. A second worm gear 82 is fixedly installed on the outer side of the threaded sleeve 81. A second worm 83 meshing with the second worm gear 82 is also rotatably arranged on the moving frame 8. Two threaded sleeves 81 are arranged at intervals in the first direction on the moving frame 8. Both threaded sleeves 81 are rotatably arranged on the moving frame 8. Second worm gears 82 are fixedly installed on the outer sides of the threaded sleeves 81, and a second worm 83 is rotatably arranged on the moving frame 8. The second worm 83 is simultaneously meshed with the second worm gears 82 corresponding to the two threaded sleeves 81. Thus, when the second worm 83 rotates, the two threaded sleeves 81 can be driven to rotate synchronously. A lead screw 63 arranged in the vertical direction is fixedly installed on the lifting frame 6. The lead screw 63 is threadedly connected to the threaded sleeve 81. When the threaded sleeve 81 rotates, the lead screw 63 can be driven to move up and down synchronously.

[0049] Specifically, in this embodiment, a motor for driving the second worm 83 to rotate is also fixedly installed on the moving frame 8.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An investment casting melting centrifugal solidification device, characterized in that: include: Fixed frame (1); A rotating barrel (2) rotatably disposed on the fixed frame (1); A placement rack (3) is mounted on the fixed rack (1) and is located above the rotating barrel (2). The position of the placement rack (3) on the fixed rack (1) has a degree of freedom for adjustment in the vertical direction. The placement rack (3) can be moved into the interior of the rotating barrel (2). A first clamping arm (4) is mounted on the placement frame (3), and a first guide wheel (41) is rotatably provided at the end of the first clamping arm (4); The second clamping arm (5) is mounted on the placement rack (3), and two second guide wheels (51) are rotatably provided at the end of the second clamping arm (5). The first guide wheel (41) and the two second guide wheels (51) form a clamping gap for clamping the pouring cup. The positions of the first clamping arm (4) and the second clamping arm (5) on the placement rack (3) have the freedom to move synchronously in a direction of being relatively close or relatively far away, and the arrangement direction of the first clamping arm (4) and the second clamping arm (5) is defined as a first direction.

2. The investment casting melting centrifugal solidification device according to claim 1, characterized in that: A driving wheel (31) and a driven wheel (32) are installed on the placement frame (3) at intervals along a first direction, a chain (33) is arranged in meshing relationship between the driving wheel (31) and the driven wheel (32), the chain (33) comprises a first section and a second section with opposite moving directions, and the first clamping arm (4) and the second clamping arm (5) are respectively installed on the first section and the second section.

3. The investment casting melting centrifugal solidification device according to claim 2, characterized in that: The driving wheel (31) and the driven wheel (32) are both fixedly connected with a transmission wheel (34); the placement frame (3) is also rotatably provided with a driving wheel (35) for driving the driving wheel (31) and the driven wheel (32) to rotate synchronously; and the placement frame (3) is fixedly installed with a driving member (36) for driving the driving wheel (35) to rotate.

4. The investment casting melting centrifugal solidification device according to claim 1, characterized in that: A lifting frame (6) is slidably arranged on the fixed frame (1) in a vertical direction, the placing frame (3) is mounted on the lifting frame (6), and the middle part of the placing frame (3) is rotatably arranged on the lifting frame (6), and the axis of the rotating shaft of the placing frame (3) on the lifting frame (6) is arranged in the vertical direction.

5. The investment casting melting centrifugal solidification device according to claim 4, characterized in that: The lifting frame (6) is provided with a driving assembly (7) for driving the placement frame (3) to rotate, and the driving assembly (7) comprises: A first worm gear (71) is fixedly mounted on a rotating shaft of the placement frame (3) on the lifting frame (6); A first worm (72) is rotatably disposed on the lifting frame (6) and is meshed with the first worm wheel (71); A power member (73) is mounted on the lifting frame (6), and a driving end of the power member (73) is drivingly connected to the first worm (72).

6. The investment casting melting centrifugal solidification device according to claim 4, characterized in that: A movable frame (8) is slidably arranged on the fixed frame (1) in a horizontal direction and perpendicular to a first direction, the lifting frame (6) is mounted on the movable frame (8), and the first clamping arm (4) and the second clamping arm (5) can be moved to the outside of the rotating barrel (2).

7. The investment casting melting centrifugal solidification device according to claim 1, characterized in that: The first clamping arm (4) is hingedly provided with a first connecting arm (42) at one end away from the placing rack (3), and the first guide wheel (41) is rotatably provided on the first connecting arm (42). The second clamping arm (5) is hingedly provided with a second connecting arm (52) at one end away from the placing rack (3), and the second guide wheel (51) is rotatably provided on the second connecting arm (52). When the first connecting arm (42) and the second connecting arm (52) swing in a direction away from each other, the first guide wheel (41) and the second guide wheel (51) can synchronously abut against the inner wall of the rotating barrel (2).

8. The investment casting melting centrifugal solidification device according to claim 7, characterized in that: The first connecting arm (42) is fixedly mounted with a first gear (421) on a hinge shaft on the first clamping arm (4); a second gear (422) is rotatably mounted on the first clamping arm (4) and is transmission-connected to the first gear (421); a swing rod (423) is fixedly mounted on the rotating shaft of the second gear (422); a guide roller (424) is rotatably mounted on the end of the swing rod (423) away from the second gear (422); a guide groove is arranged along a first direction in the length direction on the placement frame (3); a reversing groove is bent in the middle of the guide groove in a direction away from the first connecting arm (42).

9. The investment casting melting centrifugal solidification device according to claim 6, characterized in that: A guide frame (62) is freely slidably arranged on the movable frame (8) in a vertical direction, and the lifting frame (6) comprises two guide arms (61) slidably arranged on the guide frame (62), and a support plate (611) for supporting the bottom of the guide frame (62) is fixedly installed at the bottom end of the guide arm (61).

10. The investment casting melting centrifugal solidification device according to claim 6, characterized in that: A threaded sleeve (81) is rotatably mounted on the movable frame (8), a lead screw (63) threadably connected to the threaded sleeve (81) is fixedly mounted on the lifting frame (6), a second worm gear (82) is fixedly mounted on the outer side of the threaded sleeve (81), and a second worm (83) rotatably mounted on the movable frame and meshing with the second worm gear (82) is also rotatably mounted on the movable frame.

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