A melting centrifugal solidification device for precision investment casting

Abstract

The application provides a precision investment casting smelting centrifugal solidification device, which comprises a fixing frame, a rotating barrel, a placing frame, a first clamping arm and a second clamping arm. The precision investment casting smelting centrifugal solidification device is used in the following manner: first, the position of the moving frame is adjusted to move upwards and be located above the rotating barrel, so that an operator can conveniently place a mold shell between the first clamping arm and the second clamping arm and clamp the mold shell outside a sprue cup through a first guide wheel on the first clamping arm and a second guide wheel on the second clamping arm, and finally, the placing frame is driven to move downwards, so that the mold shell is placed inside the rotating barrel. The positions of the first guide wheel and the second guide wheel can position the sprue cup, and when the mold shell is rotated and condensed later, the multiple mold shells in the circumferential direction can be ensured to be subjected to stable centrifugal force. After the condensation is completed, the mold shell can be taken out through the placing frame, and the operation is convenient and the use is convenient.

Description

Technical Field

[0001] This invention belongs to the field of precision casting technology, and specifically relates to a centrifugal solidification device for investment casting precision melting. Background Technology

[0002] In the process of medium-temperature wax investment casting, a mold shell is typically fabricated based on the workpiece's shape. Molten steel is then poured into the shell, and the casting solidifies to form a precision casting. To improve production efficiency, a gating system is usually used, with a sprue connected to the gating system, and a mold for forming the workpiece connected around the sprue. If gravity-based solidification is used alone during casting, the molten steel may not effectively fill the mold, leading to casting defects. Therefore, for some complex workpieces, centrifugal solidification is often used to assist in forming. Centrifugal solidification uses a rotating drum. After molten steel is added to the shell, the rotation of the drum forces the molten steel inside the shell to effectively fill the mold using centrifugal force, thus improving the quality of the formed workpiece. However, currently, the shell is usually placed into the rotating drum manually. Operators typically use a clamping method to place the shell into the rotating drum. The clamping fixture is prone to interference with the rotating drum, causing inconvenience in on-site operation. At the same time, manual operation has a certain positional error, making it difficult to place the sprue on the shell into the axis of the rotating drum, thus causing inconvenience in on-site use. Summary of the Invention

[0003] This invention provides a centrifugal solidification apparatus for investment casting, which aims to solve the problem in the prior art where the mold shell is inconvenient to operate when placed inside the rotating drum during the centrifugal solidification process of investment casting.

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

[0005] Fixture;

[0006] The rotating barrel is rotatably mounted on the fixed frame.

[0007] A placement rack is mounted on the fixed frame and located above the rotating barrel. The placement rack has a vertically adjustable position on the fixed frame and can be moved into the rotating barrel.

[0008] A first clamping arm is mounted on the placement frame, and a first guide wheel is rotatably provided at the end of the first clamping arm;

[0009] The second clamping arm is mounted on the placement frame. Two second guide wheels are rotatably provided 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 positions of the first clamping arm and the second clamping arm on the placement frame have the freedom to move synchronously in a direction that is relatively close or relatively far apart. The arrangement direction of the first clamping arm and the second clamping arm is defined as the first direction.

[0010] In one possible implementation, a drive wheel and a driven wheel are spaced apart on the placement rack along a first direction, and a chain is meshed between the drive wheel and the driven wheel. The chain includes a first segment and a second segment with opposite directions of movement, and the first clamping arm and the second clamping arm are respectively mounted on the first segment and the second segment.

[0011] In one possible implementation, both the driving wheel and the driven wheel are fixedly connected to a transmission wheel, and the placement frame is also rotatably provided with a drive wheel for driving the driving wheel and the driven wheel to rotate synchronously. The placement frame is fixedly installed with a drive component for driving the drive wheel to rotate.

[0012] In one possible implementation, a lifting frame is slidably mounted on the fixed frame in the vertical direction, the placement frame is mounted on the lifting frame, and the middle part of the placement frame is rotatably mounted on the lifting frame, with the axis of the rotation shaft of the placement frame on the lifting frame arranged in the vertical direction.

[0013] In one possible implementation, the lifting frame is provided with a drive assembly for driving the placement frame to rotate, the drive assembly comprising:

[0014] The first worm gear is fixedly installed on the rotating shaft of the placement frame on the lifting frame;

[0015] The first worm gear is rotatably mounted on the lifting frame and meshes with the first worm wheel;

[0016] A power component is installed on the lifting frame, and the drive end of the power component is connected to the first worm gear transmission.

[0017] In one possible implementation, a movable frame is slidably disposed on the fixed frame along the horizontal direction and perpendicular to the first direction, the lifting frame is mounted on the movable frame, and the first clamping arm and the second clamping arm are movable to the outside of the rotating barrel.

[0018] In one possible implementation, a first connecting arm is hinged to the end of the first clamping arm away from the placement frame, and a first guide wheel is rotatably mounted on the first connecting arm. A second connecting arm is hinged to the end of the second clamping arm away from the placement frame, and a second guide wheel is rotatably mounted on the second connecting arm. Furthermore, when the first and second connecting arms swing in a direction that moves away from each other, the first and second guide wheels can simultaneously abut against the inner wall of the rotating drum.

[0019] In one possible implementation, a first gear is fixedly mounted on the hinge shaft of the first clamping arm, and a second gear is rotatably mounted on the first clamping arm and driven by the first gear. A swing rod is fixedly mounted on the rotating shaft of the second gear, and a guide roller is rotatably mounted on the end of the swing rod away from the second gear. The placement frame is provided with a guide groove arranged along a first direction in the length direction, and a reversing groove is provided in the middle of the guide groove in a direction away from the first connecting arm.

[0020] In one possible implementation, a guide frame is slidably mounted on the movable frame in the vertical direction, and the lifting frame includes two guide arms slidably mounted on the guide frame, with a support plate fixedly installed at the bottom end of the guide arm for supporting the bottom of the guide frame.

[0021] In one possible implementation, a threaded sleeve is rotatably mounted on the movable frame, a lead screw that is threadedly connected to the threaded sleeve is fixedly mounted on the lifting frame, a second worm gear is fixedly mounted on the outer side of the threaded sleeve, and a second worm is rotatably mounted on the movable frame and meshes with the second worm gear.

[0022] The solution shown in this application, compared with the prior art, features a fixed frame with a rotating barrel rotatably mounted on it. The top of the rotating barrel has an opening for placing the mold shell, and a placement frame is installed at the opening. The placement frame can move vertically on the fixed frame. Two opposing first and second clamping arms are mounted on the placement frame. A first guide wheel is rotatably mounted at the end of the first clamping arm, and two second guide wheels are rotatably mounted on the second clamping arm. When the pouring cup is clamped between the first and second guide wheels, the axis of the pouring cup coincides with the axis of the rotating barrel. In use, the moving frame is first adjusted upwards and positioned above the rotating barrel, providing sufficient space to place the cast mold shell between the first and second clamping arms. This facilitates the operator placing the mold shell between the first and second clamping arms, clamping it to the outside of the pouring cup via the first guide wheels on the first clamping arm and the second guide wheels on the second clamping arm. Finally, the placement frame is driven downwards to place the mold shell inside the rotating barrel. Furthermore, the positions of the first and second guide wheels help to position the pouring cup, ensuring that the mold shell is placed as close as possible to the axis of the rotating barrel. This guarantees that the multiple molds around the mold are subjected to stable centrifugal force during the later stages of rotation and solidification. After solidification, the mold can be removed using the placement rack, making operation convenient and easy to use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the centrifugal solidification apparatus for investment casting precision melting provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the installation structure of the placement rack provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the bottom structure of the placement rack provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the installation structure of the driving component provided in an embodiment of the present invention;

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

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Fixed frame; 2. Rotating drum; 3. Placement frame; 31. Drive wheel; 32. Driven wheel; 33. Chain; 34. Transmission wheel; 35. Drive wheel; 36. Drive component; 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. Pallet; 62. Guide frame; 63. Lead screw; 7. Drive assembly; 71. First worm gear; 72. First worm; 73. Power component; 8. Moving frame; 81. Threaded sleeve; 82. Second worm gear; 83. Second worm. Detailed Implementation

[0030] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0031] Please refer to the following: Figures 1 to 5 The centrifugal solidification apparatus for investment casting and smelting provided by the present invention will now be described. The centrifugal solidification apparatus for investment casting and smelting includes a fixed frame 1, a rotating drum 2, a placement frame 3, a first clamping arm 4, and a second clamping arm 5. The rotating drum 2 is rotatably mounted on the fixed frame 1; the placement frame 3 is mounted on the fixed frame 1 and located above the rotating drum 2. The placement frame 3 has a vertically adjustable position on the fixed frame 1 and can move into the rotating drum 2. The first clamping arm 4 is mounted on the placement frame 3, and a first guide wheel 41 is rotatably mounted at its end. The second clamping arm 5 is mounted on the placement frame 3, and two second guide wheels 51 are rotatably mounted at its end. The first guide wheel 41 and the two second guide wheels 51 form a clamping gap for clamping the pouring cup. The first clamping arm 4 and the second clamping arm 5 have a degree of freedom to move synchronously in a direction that is relatively close or relatively far apart on the placement frame 3. The arrangement direction of the first clamping arm 4 and the second clamping arm 5 is defined as the first direction.

[0032] The centrifugal solidification apparatus for precision investment casting provided in this embodiment, compared with the prior art, features a fixed frame 1 on which a rotating drum 2 is rotatably mounted. An opening for placing the mold shell is located at the top of the rotating drum 2, and a placement frame 3 is installed at the opening of the rotating drum 2. The placement frame 3 can move vertically on the fixed frame 1. Two opposing first clamping arms 4 and second clamping arms 5 are mounted on the placement frame 3. A first guide wheel 41 is rotatably mounted at the end of the first clamping arm 4, and two second guide wheels 51 are rotatably mounted on the second clamping arm 5. When the pouring cup is clamped between the first guide wheels 41 and the second guide wheels 51, the axis of the pouring cup coincides with the axis of the rotating drum 2. In this application, during use, the position of the moving frame 8 is first adjusted upwards and positioned above the rotating drum 2, thus providing sufficient space for placing the cast mold shell between the first clamping arms 4 and the second clamping arms 5. This allows operators to easily place the mold shell between the first clamping arm 4 and the second clamping arm 5, and clamp it to the outside of the pouring cup via the first guide wheel 41 on the first clamping arm 4 and the second guide wheel 51 on the second clamping arm 5. Finally, the placement rack 3 is driven to move downwards, thus placing the mold shell inside the rotating drum 2. Furthermore, the positions of the first guide wheel 41 and the second guide wheel 51 help to position the pouring cup, ensuring that the mold shell is placed as close as possible to the axis of the rotating drum 2. This guarantees stable centrifugal force on the multiple molds around the mold during subsequent rotation and solidification. After solidification, the mold can be removed using the placement rack 3, making the operation convenient and easy to use.

[0033] Specifically, in this embodiment, the pouring cup has a conical shape, and the first guide wheel 41 and the second guide wheel 51 are conical wheels that are adapted to the shape of the pouring cup.

[0034] Specifically, in this embodiment, a motor for driving the rotating barrel 2 to rotate is fixedly installed on the fixed frame 1, and a coaxially arranged pulley is fixedly installed at the bottom of the rotating barrel 2, and the drive end of the motor is connected to the pulley for transmission.

[0035] In some embodiments, the first clamping arm 4 and the second clamping arm 5 described above can be adopted as follows: Figure 1 , Figure 2 The structure shown. See also... Figure 1 , Figure 2A drive wheel 31 and a driven wheel 32 are installed at intervals along a first direction on the placement frame 3. A chain 33 is meshed between the drive wheel 31 and the driven wheel 32. The chain 33 includes a first segment and a second segment with opposite directions of movement. A first clamping arm 4 and a second clamping arm 5 are respectively installed on the first segment and the second segment. Both the drive wheel 31 and the driven wheel 32 are sprockets. The chain 33 is wound between the drive wheel 31 and the driven wheel 32 and is meshed with them. The length direction of both the first segment and the second segment of the chain 33 is along the first direction. The first segment and the second segment are arranged parallel to each other at intervals. The first clamping arm 4 and the second clamping arm 5 are respectively installed on the first segment and the second segment. When the drive wheel 31 and the driven wheel 32 drive the chain 33 to move, the first segment and the second segment of the chain 33 move in opposite directions. This allows the first clamping arm 4 and the second clamping arm 5 to move relatively closer or further apart along the first direction and move synchronously, thereby realizing the clamping and releasing operation of the pouring cup.

[0036] In some embodiments, the driving wheel 31 and the driven wheel 32 can be adopted as follows: Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 Both the driving wheel 31 and the driven wheel 32 are fixedly connected to transmission wheels 34. A drive wheel 35 is also rotatably mounted on the placement frame 3 to drive the driving wheel 31 and the driven wheel 32 to rotate synchronously. A drive component 36 is fixedly mounted on the placement frame 3 to drive the drive wheel 35 to rotate. The rotation shafts of the driving wheel 31 and the driven wheel 32 pass through the placement frame 3, and transmission wheels 34 are fixedly mounted at the bottom ends of the rotation shafts of both the driving wheel 31 and the driven wheel 32. When the transmission wheel 34 rotates, it can synchronously drive the driving wheel 31 and the driven wheel 32 to rotate together. A drive wheel 35 is also rotatably mounted at the bottom of the placement frame 3. The drive component 36 is a motor, and the output shaft of the drive component 36 is connected to the drive wheel 35, thereby driving the drive wheel 35 to rotate.

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

[0038] In some embodiments, the aforementioned fixing frame 1 may be as follows: Figure 2 The structure shown. See also Figure 2A lifting frame 6 is slidably mounted on the fixed frame 1 along the vertical direction. A placement frame 3 is mounted on the lifting frame 6, with its center rotatably positioned on the lifting frame 6. The axis of rotation of the placement frame 3 on the lifting frame 6 is vertical. When the placement frame 3 rotates on the lifting frame 6, the first clamping arm 4 and the second clamping arm 5 located on the placement frame 3 can rotate to the outside of the rotating drum 2, thereby further facilitating the loading and unloading of the mold shell.

[0039] Preferably, in this embodiment, the rotation axis of the placement 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 axis of the rotating barrel 2. Thus, when the placement 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 rotated to the outside of the rotating barrel 2, and the height of the placement frame 3 can be adjusted. The operator places the mold shell between the first guide wheel 41 and the second guide wheel 51. Then, the placement frame 3 is moved upward so that the height of the mold shell is higher than the top of the rotating barrel 2. The mold shell is rotated to the opening of the rotating barrel 2 by rotating the placement frame 3. Finally, the height of the lifting frame 6 is lowered to place the mold shell inside the rotating barrel 2. Automatic placement of the mold shell can be achieved. Furthermore, when the mold shell is clamped onto the placement frame 3, it can be clamped on the outside of the rotating barrel 2. The height of the placement frame 3 can be freely adjusted according to on-site needs, reducing the labor intensity of the operator.

[0041] In some embodiments, the aforementioned placement rack 3 may be adopted as follows: Figure 2 , Figure 3 and Figure 4 The structure shown. See also... Figure 2 , Figure 3 and Figure 4The lifting frame 6 is equipped with a drive assembly 7 for driving the rotation of the placement rack 3. The drive assembly 7 includes a first worm gear 71, a first worm 72, and a power component 73. The first worm gear 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 meshes with the first worm gear 71; the power component 73 is mounted on the lifting frame 6, and its drive end is connected to the first worm 72. A mounting part 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, rotatably mounted on the mounting part, and the first worm gear 71 is fixedly mounted on the outside of the rotating sleeve. The first worm 72, meshing with the first worm gear 71, is rotatably mounted on the mounting part of the lifting frame 6. The power component 73 is a reversible motor, and its drive end is connected to the first worm 72, thereby controlling the rotation of the placement rack 3 through the power component 73. The position of the placement frame 3 is fixed by the self-locking structure of the first worm 72 and the first worm wheel 71.

[0042] In some embodiments, the aforementioned fixing frame 1 may be as follows: Figure 1 , Figure 2 The structure shown. See also... Figure 1 , Figure 2 A movable frame 8 is slidably mounted on the fixed frame 1 along a horizontal direction and perpendicular to a first direction. A lifting frame 6 is mounted on the movable frame 8, and the first clamping arm 4 and the second clamping arm 5 are movable to the outside of the rotating barrel 2. The movable frame 8 is also slidably mounted on the fixed frame 1, and the direction of movement of the movable frame 8 on the fixed frame 1 is defined as a second direction. A lead screw is rotatably mounted on the fixed frame 1, and a threaded sleeve threadedly connected to the lead screw is fixedly mounted on the movable frame 8. A forward and reverse motor for driving the lead screw is also fixedly mounted on the fixed frame 1, thereby controlling the position of the movable frame 8. The movable frame 8 can move the placement frame 3 to the outside of the opening of the rotating barrel 2 via 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. Then, the movable frame 8 can be used to move the placement frame 3 and the components located on the placement frame 3 away from the opening of the rotating barrel 2. This prevents the heat from the mold shell from affecting the service life of the components on the placement frame 3.

[0043] Preferably, in this embodiment, by setting up the movable frame 8, the placement frame 3 can be moved to both sides of the rotating drum 2 along the second direction, which can realize the operation of loading and unloading materials on one side, making full use of the on-site operating space and making it more convenient for on-site loading and unloading operations.

[0044] In some embodiments, the first clamping arm 4 and the second clamping arm 5 may be adopted as follows: Figure 1 , Figure 2 The structure shown. See also... Figure 1 , Figure 2 The first clamping arm 4 has a first connecting arm 42 hinged to its end away from the placement frame 3, and a first guide wheel 41 is rotatably mounted on the first connecting arm 42. The second clamping arm 5 has a second connecting arm 52 hinged to its end away from the placement frame 3, and a second guide wheel 51 is rotatably mounted 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 simultaneously abut against the inner wall of the rotating barrel 2. Both the first clamping arm 4 and the second clamping arm 5 extend along a second direction away from the axis of the hinge on the lifting frame 6. The first connecting arm 42 and the second connecting arm 52 are respectively hinged to their ends away from the placement frame 3. The first guide wheel 41 is rotatably mounted on the end of the first connecting arm 42 away from the first clamping arm 4. The second guide wheel 51 is rotatably mounted on the 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 a 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 can be clamped using 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 a 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 abut against the inner wall of the rotating barrel 2, thereby guiding the rotating barrel 2 and ensuring its stability during operation. Thus, the first guide wheel 41 and the second guide wheel 51 can both guide and clamp the shell.

[0045] In some embodiments, the first connecting arm 42 described above can be as follows: Figure 3 , Figure 5 The structure shown. See also... Figure 3 , Figure 5A first gear 421 is fixedly mounted on the hinge shaft of the first clamping arm 4 on the first connecting arm 42. A second gear 422, which is rotatably connected to the first gear 421, is rotatably mounted on the first clamping arm 4. 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. The placement frame 3 is provided with a guide groove along the first direction in the length direction. A reversing groove is bent in the middle of the guide groove away from the first connecting arm 42. A hinge shaft is fixedly mounted on the end of the first connecting arm 42 away from the first guide wheel 41. The first gear 421 is fixedly mounted on the hinge shaft. The second gear 422 is meshed on one side of the first gear 421. The second gear 422 is rotatably mounted on the first clamping arm 4. When the second gear 422 rotates, it can synchronously drive the first gear 421 to rotate. The second gear 422 has the same size and specifications as the first gear 421. One end of the swing rod 423 is fixedly mounted 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 radially along 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 the end of the swing rod 423 away from the second gear 422. The guide roller 424 is rolled inside the guide groove, and a reversing groove is bent in the middle of the guide groove. In this application, when the first clamping arm 4 moves along the first direction, the guide roller 424 moves with the first clamping arm 4 inside the guide groove. 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. Furthermore, after the guide roller 424 passes through the reversing groove, it moves to another section of the guide groove, causing the swing arm 423 to rotate 180 degrees. This causes the second gear 422 to drive the first gear 421 to rotate 180 degrees as well. Thus, the position of the first connecting arm 42 can be switched during the movement of the first clamping arm 4 in the first direction. When the first clamping arm 4 moves away from the axis of the rotating barrel 2, the first connecting arm 42 swings until the first guide wheel 41 is located outside the first clamping arm 4, thereby guiding the rotating barrel 2. When the first clamping arm 4 moves closer to the axis of the rotating barrel 2, the first connecting arm 42 swings until the second guide wheel 51 is located on the inner wall of the first clamping arm 4, thereby clamping the shell.

[0046] Specifically, in this embodiment, the second clamping arm 5 is installed on the placement frame 3 in the same way as the first clamping arm 4 is installed on the placement frame 3, and the second connecting arm 52 is installed on the second clamping arm 5 in the same way as the first connecting arm 42 is installed on the first clamping arm 4.

[0047] In some embodiments, the aforementioned lifting frame 6 may adopt the following... Figure 1, Figure 2 The structure shown. See also... Figure 1 , Figure 2 A guide frame 62 is slidably mounted vertically on the movable frame 8. The lifting frame 6 includes two guide arms 61 slidably mounted on the guide frame 62. A support plate 611 is fixedly mounted at the bottom of each guide arm 61 to support the bottom of the guide frame 62. When the lifting frame 6 moves upward, the support plate 611 at the bottom of the guide arm 61 supports the guide frame 62, thus moving the guide frame 62 upward together and preventing interference between the guide frame 62 and the rotating barrel 2 during the movement of the movable frame 8. When the lifting frame 6 moves downward, the guide frame 62 moves downward along with the guide arm 61 until it can no longer move downward on the movable frame 8. Then, the lifting frame 6 can continue to move downward relative to the guide frame 62, increasing the travel distance of the lifting frame 6 during its vertical movement and improving its stability during movement.

[0048] In some embodiments, the aforementioned movable frame 8 may adopt the following... Figure 1 , Figure 2 The structure shown. See also... Figure 1 , Figure 2 A threaded sleeve 81 is rotatably mounted on the movable frame 8. A lead screw 63, threadedly 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. A second worm 83, meshing with the second worm gear 82, is also rotatably mounted on the movable frame 8. Two threaded sleeves 81 are spaced apart along a first direction on the movable frame 8. Both threaded sleeves 81 are rotatably mounted on the movable frame 8. A second worm gear 82 is fixedly mounted on the outer side of each threaded sleeve 81, and a second worm 83 is rotatably mounted on the movable frame 8. The second worm 83 meshes simultaneously with the corresponding second worm gear 82 of the two threaded sleeves 81. Thus, when the second worm 83 rotates, it can synchronously drive the two threaded sleeves 81 to rotate. A lead screw 63, arranged vertically, is fixedly mounted on the lifting frame 6. The lead screw 63 is threadedly connected to the threaded sleeve 81. When the threaded sleeve 81 rotates, it can synchronously drive the lead screw 63 to move up and down.

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

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fused deposition modeling precision casting melting centrifugal solidification device, characterized in that, The utility model relates to a kind of sprue cup clamping device, including: Fixed frame (1); Rotary barrel (2), rotation is arranged on the fixed frame (1); Placement frame (3), it is installed on the fixed frame (1), and it is located above the rotary barrel (2), the position of the placement frame (3) on the fixed frame (1) has the freedom of adjustment along vertical direction, the placement frame (3) can be moved to inside the rotary barrel (2), First clamping arm (4), it is installed on the placement frame (3), and the end of the first clamping arm (4) is rotationally provided with first guide wheel (41); Second clamping arm (5), it is installed on the placement frame (3), and the end of the second clamping arm (5) is rotationally provided with two second guide wheels (51), the first guide wheel (41) and two the second guide wheel (51) constitute the clamping gap for clamping sprue cup, the first clamping arm (4) and the second clamping arm (5) on the placement frame (3) have the freedom of synchronous movement along the direction of relatively close or relatively far, define the arrangement direction of the first clamping arm (4) and the second clamping arm (5) as first direction; The end of the first clamping arm (4) away from the placement frame (3) is hingedly provided with first connecting arm (42), and the first guide wheel (41) is rotationally provided on the first connecting arm (42), the end of the second clamping arm (5) away from the placement frame (3) is hingedly provided with second connecting arm (52), and the second guide wheel (51) is rotationally provided on the second connecting arm (52), and when the first connecting arm (42) and the second connecting arm (52) swing to the direction of relatively far, the first guide wheel (41) and the second guide wheel (51) can be synchronous and abut on the inner wall of the rotary barrel (2); The first connecting arm (42) is fixedly installed with first gear (421) on the hinging shaft on the first clamping arm (4), and the first clamping arm (4) is rotationally provided with second gear (422) that is drivingly connected with the first gear (421), the rotating shaft of the second gear (422) is fixedly installed with swing rod (423), the end of the swing rod (423) away from the second gear (422) is rotationally provided with guide roller (424), and the placement frame (3) is provided with guide groove, the length direction of the guide groove is along first direction, and the middle part of the guide groove is bently provided with reversing groove in the direction away from the first connecting arm (42).

2. The investment precision casting melting centrifugal solidification apparatus as recited in claim 1, wherein, The placement frame (3) is installed with driving wheel (31) and driven wheel (32) along first direction, and the driving wheel (31) and the driven wheel (32) are meshed with chain (33), the chain (33) includes first section and second section, the first clamping arm (4) and the second clamping arm (5) are installed on the first section and the second section respectively.

3. The investment precision casting melting centrifugal solidification apparatus as recited in claim 2, wherein, The driving wheel (35) is arranged on the placing rack (3) and is used to drive the driving wheel (35) to rotate.

4. The investment precision casting melting centrifugal solidification apparatus as recited in claim 1, wherein, The lifting frame (6) is arranged on the fixed frame (1) in the vertical direction, the placing rack (3) is arranged on the lifting frame (6), and the middle part of the placing rack (3) is rotatably arranged on the lifting frame (6).

5. The investment precision casting melting centrifugal solidification apparatus as recited in claim 4, wherein, The driving assembly (7) is arranged on the lifting frame (6) and is used to drive the placing rack (3) to rotate. The first worm (72) is rotatably arranged on the lifting frame (6) and is in meshing connection with the first worm wheel (71). The power member (73) is arranged on the lifting frame (6), and the driving end of the power member (73) is in transmission connection with the first worm (72). The moving frame (8) is arranged on the fixed frame (1) in the horizontal direction and is perpendicular to the first direction, the lifting frame (6) is arranged on the moving frame (8), and the first clamping arm (4) and the second clamping arm (5) can move to the outside of the rotary barrel (2).

6. The investment precision casting melting centrifugal solidification apparatus as recited in claim 4, wherein, The guiding frame (62) is arranged on the moving frame (8) in the vertical direction and is freely slidable, the lifting frame (6) comprises two guiding arms (61) which are slidably arranged on the guiding frame (62), and the bottom end of the guiding arm (61) is fixedly provided with a supporting plate (611) which is used to support the bottom of the guiding frame (62).

7. The investment precision casting melting centrifugal solidification apparatus as recited in claim 6, wherein, The screw sleeve (81) is rotatably arranged on the moving frame (8), the lead screw (63) is fixedly arranged on the lifting frame (6) and is in threaded connection with the screw sleeve (81), the second worm wheel (82) is fixedly arranged on the outside of the screw sleeve (81), and the second worm (83) is rotatably arranged on the moving frame and is in meshing connection with the second worm wheel (82).

8. The investment precision casting melting centrifugal solidification apparatus as claimed in claim 6, wherein, ​

Images