A shell shaker for casting mold sand shell stripping and method of use

Abstract

The present application relates to the technical field of casting shell stripping, in particular to a shell vibrating machine for casting mold sand shell stripping and a use method thereof, comprising an oscillating body and a lifting body distributed in an up-down manner, the oscillating body is used for vibrating a casting; the oscillating body comprises a machine body with a circular cavity inside, the circular cavity axis is horizontal, and a filling plate is arranged on the inner wall of the circular cavity. Through the present application, the problem of easy sand shell residue and slow stripping speed in the traditional single direction stripping vibration movement is effectively solved, the circumferential vibration mode is used to provide omnidirectional vibration movement for the casting on a certain vertical plane, and the casting can be rotated to make any position on the casting vibrate in all directions in space, thereby greatly improving the diversity of vibration direction, facilitating the breaking and falling of the sand shell in the casting, improving the stripping effect, improving the work efficiency, reducing the vibration intensity and the damage to the casting.

Description

Technical Field

[0001] This invention relates to the field of casting shell removal technology, and in particular to a shell-vibrating machine for removing sand shells from casting molds and its usage method. Background Technology

[0002] In metal casting processes, especially when using sand casting or precision casting to produce complex castings, a hard sand shell formed by molding sand, resin, and other materials will firmly adhere to the surface of the casting. This sand shell must be completely removed in subsequent cleaning processes to obtain a clean casting body. For this reason, the industry widely uses a shell-removing machine (also known as a shell-removing machine or sand-removing machine) as a special equipment for removing sand shells. The working principle of a traditional shell-removing machine is as follows: the casting with shell after pouring and cooling is placed on the worktable, and the drive mechanism above drives the ejector pin to press vertically down and press against the surface of the casting. Then, a high-frequency vibrator causes the ejector pin to generate up-and-down pulsating impacts, driving the entire casting to vibrate violently in the vertical direction. With the help of this vibration energy, the sand shell gradually breaks and peels off due to brittle fracture, and finally the casting and sand shell are separated.

[0003] However, this vibrating shell machine can only provide a single vertical vibration force to the casting. Due to the fixed vibration direction and lack of multi-dimensional excitation, in areas with complex casting structures, such as inner corners, deep cavities, narrow grooves, or undercut areas, the vibration energy is difficult to effectively transmit to these "vibration dead zones." As a result, the sand shell in these locations cannot obtain sufficient shear and alternating stress and remains, causing incomplete shell removal. At the same time, the continuous vibration in a single direction makes the sand shell crack propagation path singular, resulting in low overall peeling efficiency. This not only leads to long processing time and low efficiency for a single piece, but also poses a risk of surface damage or internal micro-cracks to the casting due to prolonged impact. Summary of the Invention

[0004] This invention provides a vibrating shell machine for demolding sand shells from casting molds and its usage method, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A vibrating shell machine for demolding sand shells from casting molds includes an oscillating body and a supporting body distributed vertically, wherein the oscillating body is used to vibrate the casting. The vibrating body includes a body with an internal circular cavity. The axis of the circular cavity is horizontal. A filling plate is provided on the inner wall of the circular cavity. The distance between the filling plate and the axis of the circular cavity gradually increases along the circumferential direction of the inner wall of the circular cavity. A rotating ring is coaxially rotatably arranged inside the circular cavity. Several movable partitions are provided on the rotating ring, and the movable partitions are slidably arranged along the radial direction of the rotating ring. An exhaust port and an air inlet pipe are respectively provided on the inner wall of the circular cavity on both sides of the filling plate. The rotating ring has a counterweight on its inner wall to shift its center of gravity, and a pressing body at the bottom of the machine body. The pressing body and the lifting body work together to clamp the casting and drive the casting to rotate on a horizontal plane.

[0006] Furthermore, the machine body is provided with an air guide channel, one end of which is connected to the exhaust port, and the other end of which extends to the inner side of the rotating ring.

[0007] Furthermore, an air jet pipe is provided on the side wall of the machine body, the air jet pipe passes through the machine body and communicates with the interior of the rotating ring, and the output end of the air jet pipe is inclined toward the casting.

[0008] Furthermore, the vibrating shell machine also includes a fixed ring and a fixed disk arranged coaxially and distributed vertically. A rotating disk is rotatably arranged on the fixed disk. Several vibrating bodies are arranged in a ring on the fixed ring, and several lifting bodies are arranged in a ring on the rotating disk. A rotating ring is coaxially rotatably mounted on the bottom of the fixed ring. An arc groove is formed on the bottom surface of the fixed ring. Part of the rotating ring blocks the arc groove, so that the fixed ring forms an air guiding area and a solid area. An air supply pipe communicating with the air guiding area is provided on the fixed ring. The air inlet pipe is installed on the rotating ring. During the rotation of the rotating ring, the air inlet pipe is connected to the air guiding area.

[0009] Furthermore, a plurality of connecting posts are arranged parallel to each other between the machine body and the rotating ring. One end of each connecting post is rotatably mounted on the rotating ring via a first rotating wheel, and the other end of each connecting post is slidably inserted through a second rotating wheel. The second rotating wheel is rotatably mounted on the machine body, and the first rotating wheel and the second rotating wheel are connected by a spring.

[0010] Furthermore, the pressing body includes a rotating column rotatably disposed at the bottom of the machine body and a transmission wheel disposed at the bottom of the rotating column, a transmission ring is provided between the plurality of transmission wheels, and a plurality of pressure plates for extruding the casting are disposed on the transmission wheel; The fixed plate is provided with a second transmission ring, which is connected to each of the lifting bodies in a transmission manner.

[0011] Furthermore, during the rotation of the transmission wheel, several of the pressure plates alternately contact the casting.

[0012] Furthermore, the pressure plate is slidably mounted on the transmission wheel via a slide rod, and the slide rod and the transmission wheel are connected by an elastic body; The vibrating shell machine also includes two guide rings coaxially arranged with the fixed ring. Both guide rings are fixed opposite to the transmission ring. One guide ring is located inside the plurality of lower pressing bodies, and the other guide ring is located outside the plurality of lower pressing bodies. The guide ring is provided with a guide cone surface and a pressing surface. The pressing surface is used to push the corresponding pressing plate down and into contact with the casting through part of the sliding rod. The guide cone surface is used to keep the pressing plate in contact with the casting.

[0013] Furthermore, the lifting body includes a chassis fixed to the rotating disk and a cylinder rotatably fastened to the chassis. The cylinder is connected to the transmission ring. The cylinder and the chassis form a closed space. Two partition covers are arranged opposite each other in the closed space. The partition covers are fixed relative to the chassis and move relative to the cylinder. An oil supply pipe and two oil return pipes are provided at the bottom of the chassis. The oil supply pipe communicates with the space between the two partition covers, and the oil return pipes communicate with the inside of the partition covers. A guide tube communicating with the enclosed space is provided at the top of the cylinder, and a top column is slidably arranged inside the guide tube. The top column is controlled to extend and retract by an oil supply pipe and an oil return pipe.

[0014] A method for using a vibrating shell demolding machine for casting mold sand shell removal includes the following steps: The casting is placed between the lifting body and the pressing body, and the lifting body uses hydraulic pressure to press and fix the casting. The casting is provided with vibration power by an oscillator, and the direction of vibration of the casting is circumferential in a vertical plane; The rotating pressing body and the lifting body cause the casting to rotate around its own vertical axis. Combined with the vibration provided by the vibrating body, the casting vibrates in multiple directions. The upper and lower sides of the casting are squeezed by alternating control of several pressure plates on the lower body and several top columns on the support body, so that the debris squeezed between the pressure plates and the casting and the debris squeezed between the top columns and the casting fall off.

[0015] The technical solution of this invention can achieve the following technical effects: This invention effectively solves the problems of sand shell residue and slow demolding speed in traditional unidirectional demolding vibration. By utilizing circumferential vibration, it can provide omnidirectional vibration motion to the casting on a vertical plane. Combined with the casting's rotation, any position on the casting can vibrate in all directions in space, thus greatly improving the diversity of vibration directions. This facilitates the breaking and removal of sand shells inside the casting, improving the demolding effect, while also increasing work efficiency and reducing vibration intensity and damage to the casting. Utilizing pneumatic methods to drive the casting vibration can effectively reduce equipment weight and cost, and allows for direct control of the vibration amplitude by controlling the airflow.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a vibrating shell machine used for demolding sand shells from casting molds; Figure 2 for Figure 1 Schematic diagram of the structure of the oscillator; Figure 3 This is a schematic diagram of the structure of the body and the lower pressure body in this invention; Figure 4 for Figure 3 Schematic diagram of the side section of the fuselage; Figure 5 for Figure 4 A structural diagram from another perspective; Figure 6 for Figure 3 Schematic diagram of the mid-body structure viewed from below; Figure 7 for Figure 1 A cross-sectional view of the central fixing ring; Figure 8 for Figure 1 Schematic diagram of the structure of the central support body; Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure of the middle cylinder; Figure 10 for Figure 8 A schematic diagram of the exploded structure; Figure 11 for Figure 10 Schematic diagram of the middle cylindrical structure viewed from below; Reference numerals: 100, Vibrating body; 101, Body; 102, Circular cavity; 103, Filler plate; 104, Rotating ring; 105, Movable partition; 106, Exhaust port; 107, Inlet pipe; 108, Air guide channel; 109, Jet pipe; 110, Connecting column; 111, Rotating wheel one; 112, Rotating wheel two; 113, Spring; 114, Counterweight; 200. Lifting body; 201. Cylinder; 202. Chassis; 203. Partition cover; 204. Oil supply pipe; 205. Oil return pipe; 206. Guide pipe; 207. Top column; 300. Pressing body; 301. Rotating column; 302. Transmission wheel; 303. Transmission ring one; 304. Transmission ring two; 305. Slide rod; 306. Elastic body; 307. Pressing plate; 308. Guide ring; 309. Guide cone surface; 310. Pressing surface; 400. Fixed ring; 401. Rotating ring; 402. Air guide zone; 403. Solid zone; 404. Fixed disk; 405. Rotating disk; 406. Air supply pipe. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] like Figures 1 to 6 As shown, this application provides a shell vibrating machine for demolding sand shells of casting molds, including an vibrating body 100 and a supporting body 200 distributed vertically, wherein the vibrating body 100 is used to vibrate the casting. The vibrating body 100 includes a body 101 with an internal circular cavity 102. The axis of the circular cavity 102 is horizontal. A filling plate 103 is provided on the inner wall of the circular cavity 102. The distance between the filling plate 103 and the axis of the circular cavity 102 gradually increases along the circumferential direction of the inner wall of the circular cavity 102. A rotating ring 104 is coaxially rotatably arranged inside the circular cavity 102. Several movable partitions 105 are provided on the rotating ring 104, and the movable partitions 105 are slidably arranged along the radial direction of the rotating ring 104. An exhaust port 106 and an intake pipe 107 are respectively provided on the inner wall of the circular cavity 102 on both sides of the filling plate 103. The rotating ring 104 has a counterweight 114 on its inner wall to shift the center of gravity of the rotating ring 104. A pressing body 300 is provided at the bottom of the machine body 101. The pressing body 300 and the lifting body 200 work together to clamp the casting and drive the casting to rotate on the horizontal plane.

[0022] Specifically, the pressure body 300 is installed at the bottom of the vibrating body 100. The pressure body 300 and the lifting body 200 work together to squeeze the top and bottom of the casting, thereby fixing the casting. The vibrating body 100 can provide vibration power to the casting through the pressure body 300, thereby realizing the vibration demolding of the casting. Of course, depending on the shape of the casting, a horizontal arrangement can also be adopted so that the vibrating body 100 provides reciprocating vibration power to the casting in the horizontal direction, which can also realize the demolding work.

[0023] The filling plate 103 in the body 101 is located between the inner wall of the circular cavity 102 and the rotating ring 104. Since the distance between the filling plate 103 and the axis of the circular cavity 102 gradually changes, the surface of the filling plate 103 facing the axis of the circular cavity 102 is an inclined surface. One end of the inclined surface coincides with the inner wall of the circular cavity 102, and the exhaust port 106 is close to the coincident position. The other end of the inclined surface is at a certain distance from the inner wall of the circular cavity 102, and the intake pipe 107 is close to the position. Thus, when the movable partition 105 moves on the inclined surface of the filling plate 103, the movable partition 105 can move in the radial direction of the rotating ring 104. The space between the inner wall of the circular cavity 102 and the rotating ring 104 is a gas channel.

[0024] In use, external high-pressure gas enters the space between the inner wall of the circular cavity 102 and the rotating ring 104 through the inlet pipe 107. Since the filling plate 103 occupies part of the space, the gas discharged from the inlet pipe 107 between two adjacent movable partitions 105 has unequal effective areas on these partitions. The partition 105 with a larger effective area experiences a greater force, which pushes the rotating ring 104 to rotate. This causes several movable partitions 105 to rotate. When the gas between two adjacent movable partitions 105 moves to the exhaust port 106, the movable partitions 105 move on the inclined surface of the filling plate 103. At this time, the space between the two adjacent movable partitions 105 decreases, allowing the gas in this space to... Discharged through exhaust port 106, when the movable partition 105 separates from the filling plate 103, the movable partition 105 moves outward to the initial position on the rotating ring 104, thereby realizing the continuous cyclic rotation mode of the rotating ring 104. Since the counterweight 114 is installed on the rotating ring 104, the center of gravity of the rotating ring 104 is offset. The eccentric rotating ring 104 performs rotational eccentric vibration in the vertical plane, that is, the vibration direction of the oscillator 100 is the circumferential direction in the vertical plane. The oscillator 100 transmits the vibration to the casting through the pressure body 300, thereby causing the casting to vibrate and release from the shell. Moreover, this vibration mode of the oscillator 100 can provide the casting with vibration motion in any direction in the vertical plane.

[0025] Since the pressure body 300 and the lifting body 200 can drive the casting to rotate on the horizontal plane, the vertical plane where the vibration direction of the vibrating body 100 and the casting is located is taken as the reference plane. Any position on the rotating casting can pass through this reference plane. That is, when a certain position on the casting is on the reference plane, that position will vibrate in a circle. When the position deviates from the reference plane, the position will still vibrate, but its vibration direction will change. This achieves the effect of providing any position on the casting with vibration motion in any direction.

[0026] It should be noted that, due to the adoption of an omnidirectional vibration mode, the vibration intensity can be appropriately reduced, eliminating the need for vertical vibration to dislodge the sand shell in the horizontal or inclined direction, as is required in traditional single-direction vibration.

[0027] In some embodiments, the output direction of the intake pipe 107 can also be along the tangential direction of the rotating ring 104, so that the airflow discharged from the intake pipe 107 can more directly provide rotational power to the movable partition 105 and the rotating ring 104.

[0028] The technical solution of this invention effectively solves the problems of sand shell residue and slow demolding speed in traditional unidirectional demolding vibration. By using circumferential vibration, it can provide omnidirectional vibration motion for the casting on a vertical plane. Combined with the rotation of the casting, any position on the casting can be vibrated in all directions in space, thereby greatly improving the diversity of vibration directions, facilitating the breaking and removal of sand shell inside the casting, improving the demolding effect, improving work efficiency, and reducing vibration intensity and damage to the casting. By using pneumatic method to drive the casting vibration, the weight of the equipment can be effectively reduced, the cost can be reduced, and the vibration amplitude can be directly controlled by controlling the airflow.

[0029] Furthermore, such as Figure 6 As shown, an air guide channel 108 is provided inside the body 101. One end of the air guide channel 108 is connected to the exhaust port 106, and the other end of the air guide channel 108 extends to the inside of the rotating ring 104.

[0030] When the movable partition 105 passes the inclined surface of the filling plate 103, the movable partition 105 will slide towards the inside of the rotating ring 104. When the movable partition 105 separates from the filling plate 103, the movable partition 105 needs to extend again and slide into contact with the inner wall of the circular cavity 102. In order to provide this reset force for the movable partition 105, high-pressure gas can be injected into the inside of the rotating ring 104 through the air guide channel 108 in the above structure. That is, the gas entering the exhaust port 106 can be guided to the inside of the rotating ring 104 through the air guide channel 108. At this time, the force provided by the high-pressure gas inside the rotating ring 104 to the end face of the movable partition 105 will cause the movable partition 105 to move towards the outside of the rotating ring 104.

[0031] It should be noted that, in order to prevent the air pressure outside the rotating ring 104 from exerting the same force on the outer end face of the movable partition 105, the outer end face of the movable partition 105 can be set into an arc shape that fits against the inner wall of the circular cavity 102, thereby increasing the pressure difference between the two ends of the movable partition 105 on the inner and outer sides of the rotating ring 104.

[0032] Furthermore, such as Figure 3 As shown, a jet pipe 109 is provided on the side wall of the body 101. The jet pipe 109 passes through the body 101 and communicates with the interior of the rotating ring 104. The output end of the jet pipe 109 is inclined toward the casting.

[0033] The high-pressure gas inside the rotating ring 104 can be discharged through the jet pipe 109, thereby making the airflow inside the machine body 101 stable and unidirectional. The airflow discharged from the jet pipe 109 can blow away the sand shell debris on the surface of the casting. At the same time, the airflow can enter the gap between the sand shell and the surface of the casting, which helps the sand shell to fall off and increases the shell removal speed.

[0034] Because the casting can rotate, the gas discharged from the jet pipe 109 can be blown all over the casting.

[0035] Using the above-described structure, the airflow can provide power for the rotation of the rotating ring 104, provide an outward resetting force for the movable partition 105, and blow away the debris on the surface of the casting, making it easier to loosen the sand shell on the casting.

[0036] Furthermore, such as Figure 1 and Figure 7 As shown, the vibrating shell machine also includes a fixed ring 400 and a fixed disk 404 that are coaxially arranged and distributed vertically. A rotating disk 405 is rotatably arranged on the fixed disk 404. Several vibrating bodies 100 are arranged in a ring on the fixed ring 400, and several lifting bodies 200 are arranged in a ring on the rotating disk 405. A rotating ring 401 is coaxially rotatably mounted on the bottom of the fixed ring 400. An arc groove is formed on the bottom surface of the fixed ring 400. The rotating ring 401 partially blocks the arc groove, so that the fixed ring 400 forms an air guiding area 402 and a solid area 403. An air supply pipe 406 communicating with the air guiding area 402 is provided on the fixed ring 400. An air inlet pipe 107 is installed on the rotating ring 401. During the rotation of the rotating ring 401, the air inlet pipe 107 is connected to the air guiding area 402.

[0037] The fixed ring 400 provides support for the rotating ring 401 and several oscillators 100, while the fixed disk 404 and the rotating disk 405 provide support for several lifting bodies 200. The rotation of the rotating ring 401 and the rotation of the rotating disk 405 can be driven by an external motor, thereby enabling the several oscillators 100 and several lifting bodies 200 to perform synchronous circular motion. When the air inlet pipe 107 moves to the solid area 403, the solid area 403 blocks the air inlet pipe 107, and the oscillator 100 is in a stopped state. At this position, the casting can be placed between the lifting body 200 and the pressing body 300, or the casting that has been deshelled can be removed. When the air inlet pipe 107 rotates with the rotating ring 401 to the air guiding area 402, the high-pressure gas introduced into the air guiding area 402 by the air supply pipe 406 can enter the oscillator 100 through the air inlet pipe 107, thereby driving the oscillator 100 to vibrate.

[0038] Using the above structure, a continuous shell removal process for castings can be achieved, which greatly improves work efficiency and avoids the significant waste of waiting time when removing a single casting.

[0039] Furthermore, such as Figure 3 As shown, several connecting posts 110 are arranged in parallel between the body 101 and the rotating ring 401. One end of the connecting post 110 is rotatably mounted on the rotating ring 401 via a first rotating wheel 111. The other end of the connecting post 110 is slidably inserted through a second rotating wheel 112. The second rotating wheel 112 is rotatably mounted on the body 101. The first rotating wheel 111 and the second rotating wheel 112 are connected by a spring 113.

[0040] When the vibrating body 100 vibrates, in order to reduce the vibration damage to the rotating ring 401 and enable the rotating ring 401 to move stably, the machine body 101 and the rotating ring 401 can be connected by the connecting column 110, the first rotating wheel 111, the second rotating wheel 112 and the spring 113. The air inlet pipe 107 only needs to complete the airflow delivery work. At this time, the air inlet pipe 107 can be a flexible hose.

[0041] Since the vibration direction of the rotating ring 104 is a circle in the vertical plane when it rotates, the axes of the first rotating wheel 111, the second rotating wheel 112 and the rotating ring 104 need to be parallel to each other. In this way, when the body 101 vibrates, the first rotating wheel 111 can rotate on the rotating ring 401, the second rotating wheel 112 can rotate relative to the body 101, and the connecting column 110 can slide relative to the second rotating wheel 112. The spring 113 undergoes elastic deformation, which can provide stable support for the oscillator 100 and meet its vibration requirements.

[0042] It should be noted that when the body 101 vibrates and causes the connecting column 110 to tilt, the spring 113 bends and deforms. At this time, the spring 113 provides the connecting column 110 with a restoring force that causes the connecting column 110 to move in the vertical direction.

[0043] Furthermore, such as Figures 1 to 3 As shown, the lower pressing body 300 includes a rotating column 301 rotatably disposed at the bottom of the machine body 101 and a transmission wheel 302 disposed at the bottom of the rotating column 301. A transmission ring 303 is provided between the several transmission wheels 302. Several pressing plates 307 for pressing the casting are disposed on the transmission wheels 302. A transmission ring 304 is provided on the fixed plate 404, and the transmission ring 304 is connected to each lifting body 200 in a transmission connection.

[0044] When the oscillating body 100 and the lifting body 200 perform circular motion, the transmission wheel 302 rolls on the first transmission ring 303, and the lifting body 200 rolls on the second transmission ring 304. At this time, the rotating column 301, the transmission wheel 302, and the lifting body 200 all rotate, thereby driving the casting to rotate. This structure only requires the circular motion of the rotating ring 401 and the rotating disk 405, without the need for an additional power source. Its structure is simple and easy to operate.

[0045] Furthermore, during the rotation of the transmission wheel 302, several pressure plates 307 alternately contact the casting.

[0046] When the pressure plate 307 comes into contact with the casting, part of the sand shell between the pressure plate 307 and the casting is squeezed. When the casting vibrates, the squeezed sand shell cannot be discharged quickly. By using the above-mentioned method of alternately squeezing the casting with several pressure plates 307, the sand shell can be easily removed completely, so that the pressure plate 307 can directly squeeze and contact the casting, avoiding sand shell residue.

[0047] Because the casting vibrates and rotates, in order to prevent the casting from tipping over or detaching from the lower pressure body 300, the shape of the pressure plate 307 can be set to right angle. The vertical surfaces of several pressure plates 307 are distributed in a ring and the ends of the casting are confined within them. The shattered sand shell can be discharged through two adjacent pressure plates 307.

[0048] Furthermore, such as Figures 2 to 3 As shown, the tablet 307 is slidably mounted on the transmission wheel 302 via a slide rod 305, and the slide rod 305 and the transmission wheel 302 are connected by an elastic body 306. The vibrating shell machine also includes two guide rings 308, which are coaxially arranged with the fixed ring 400. Both guide rings 308 are fixed relative to the transmission ring 303. One guide ring 308 is located inside the plurality of pressing bodies 300, and the other guide ring 308 is located outside the plurality of pressing bodies 300. The guide ring 308 is provided with a guide cone surface 309 and a pressing surface 310. The pressing surface 310 is used to push the corresponding pressing plate 307 down and into contact with the casting through part of the sliding rod 305. The guide cone surface 309 is used to keep the pressing plate 307 in contact with the casting.

[0049] The sliding direction of the pressure plate 307 and the slide rod 305 on the transmission wheel 302 is along the rotation axis of the casting. The elastic body 306 can provide an upward restoring force for the slide rod 305 and the pressure plate 307. The two guide rings 308 are located on both sides of the transmission wheel 302. When the slide rod 305 is located between the two guide rings 308, the pressure plate 307 moves upward to the initial position. At this time, the pressure plate 307 separates from the casting. When the slide rod 305 moves towards the guide rings 308, the top of the slide rod 305 contacts the pressing surface 310. The pressing surface 310 guides the slide rod 305 towards the pressing surface 310. As the slide bar 305 moves downward, the pressure plate 307 moves downward and presses the casting. When the top of the slide bar 305 slides to the bottom surface of the guide cone 309, the pressure plate 307 maintains the downward pressure on the casting. As the transmission wheel 302 rotates, when the slide bar 305 moves again between the two guide rings 308, the corresponding pressure plate 307 separates from the casting, while the other pressure plates 307 continue to squeeze the casting. This realizes the operation mode of several pressure plates 307 alternately squeezing the casting. By using the two guide rings 308, the casting can be subjected to more uniform force, and the stability of the casting movement can be improved.

[0050] It should be noted that since the oscillator 100 needs to vibrate, the guide ring 308 needs to vibrate synchronously with the oscillator 100. If the transmission ring 303 and the guide ring 308 are relatively fixed, then the transmission ring 303 also needs to vibrate.

[0051] Both the guide cone surface 309 and the pressing surface 310 are annular.

[0052] Furthermore, such as Figures 8 to 11 As shown, the lifting body 200 includes a chassis 202 fixed on a rotating disk 405 and a cylinder 201 rotatably fastened to the chassis 202. The cylinder 201 is connected to the transmission ring 304. The cylinder 201 and the chassis 202 form a closed space. Two partition covers 203 are arranged opposite to each other in the closed space. The partition covers 203 are fixed relative to the chassis 202 and move relative to the cylinder 201. The bottom of the chassis 202 is provided with an oil supply pipe 204 and two oil return pipes 205. The oil supply pipe 204 is connected to the space between the two partition covers 203, and the oil return pipes 205 are connected to the inside of the partition covers 203. A guide tube 206 communicating with the enclosed space is provided at the top of the cylinder 201. A top column 207 is slidably provided inside the guide tube 206. The top column 207 is controlled to extend and retract by the oil supply pipe 204 and the oil return pipe 205.

[0053] Two partitions 203 divide the enclosed space into a reflux space located inside the two partitions 203 and a pressurization space located between the two partitions 203. When the rotating disk 405 rotates, the cylinder 201 rolls on the transmission ring 304 and rotates relative to the chassis 202. At this time, the bottom of the top column 207 moves between the reflux space and the pressurization space. When the top column 207 moves into the pressurization space, the oil introduced into the pressurization space by the oil supply pipe 204 can provide an upward thrust to the top column 207, so that the top column 207 provides pressure to the bottom of the casting. The upward thrust, and to improve stability, can be provided by setting several top columns 207 in the pushing position; when the top column 207 moves into the reflux space, the weight of the top column 207 will drive it to fall in the guide tube 206, and the excess oil entering the guide tube 206 will flow out through the reflux space and the return oil pipe 205. This part of the top column 207 is separated from the casting. Thus, by utilizing the continuous rotation of the cylinder 201, several top columns 207 can also achieve the working mode of alternating lifting, which facilitates the removal of the sand shell between the top column 207 and the bottom of the casting.

[0054] It should be noted that, to prevent the bottom of the top column 207 from extending into the closed cavity, it can be done as follows: Figure 11 As shown, an outer edge is provided at the bottom of the inner wall of the guide tube 206 to intercept the top post 207. Of course, other limiting structures can also be provided between the guide tube 206 and the top post 207 to prevent the top post 207 from separating from the guide tube 206.

[0055] A method for using a vibrating shell demolding machine for casting mold sand shell removal includes the following steps: The casting is placed between the lifting body 200 and the pressing body 300, and the lifting body 200 presses and fixes the casting by hydraulic pressure. The vibrating body 100 provides vibration power to the casting, and the vibration direction of the casting is circumferential in the vertical plane; The rotating pressing body 300 and the lifting body 200 cause the casting to rotate around its own vertical axis. Combined with the vibration provided by the vibrating body 100, the casting vibrates in multiple directions. The pressure plates 307 on the pressure body 300 and the top columns 207 on the support body 200 are alternately controlled to squeeze the upper and lower sides of the casting, so that the debris squeezed between the pressure plates 307 and the casting and the debris squeezed between the top columns 207 and the casting fall off.

[0056] By adopting the above method, a multi-directional, all-aspect composite vibration shell removal mode in space is realized. This not only allows any position on the surface of the casting to be subjected to directional vibration stress, significantly improving the efficiency of sand shell cracking and shedding, but also effectively reduces the vibration intensity required for traditional single-direction vibration, reducing impact damage to the casting body.

[0057] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. A vibrating shell machine for demolding sand shells from casting molds, characterized in that, It includes an oscillating body and a supporting body distributed vertically, wherein the oscillating body is used to vibrate the casting; The vibrating body includes a body with an internal circular cavity. The axis of the circular cavity is horizontal. A filling plate is provided on the inner wall of the circular cavity. The distance between the filling plate and the axis of the circular cavity gradually increases along the circumferential direction of the inner wall of the circular cavity. A rotating ring is coaxially rotatably arranged inside the circular cavity. Several movable partitions are provided on the rotating ring, and the movable partitions are slidably arranged along the radial direction of the rotating ring. An exhaust port and an air inlet pipe are respectively provided on the inner wall of the circular cavity on both sides of the filling plate. The rotating ring has a counterweight on its inner wall to shift its center of gravity, and a pressing body at the bottom of the machine body. The pressing body and the lifting body work together to clamp the casting and drive the casting to rotate on a horizontal plane.

2. A vibrating shell machine for demolding sand shells of casting molds according to claim 1, characterized in that, An air guide channel is provided inside the machine body. One end of the air guide channel is connected to the exhaust port, and the other end of the air guide channel extends to the inner side of the rotating ring.

3. A vibrating shell machine for demolding sand shells of casting molds according to claim 2, characterized in that, An air jet pipe is provided on the side wall of the machine body. The air jet pipe passes through the machine body and communicates with the interior of the rotating ring. The output end of the air jet pipe is inclined toward the casting.

4. A vibrating shell machine for demolding sand shells of casting molds according to claim 1, characterized in that, The vibrating shell machine also includes a fixed ring and a fixed disk arranged coaxially and distributed vertically. A rotating disk is rotatably arranged on the fixed disk. Several vibrating bodies are arranged in a ring on the fixed ring, and several lifting bodies are arranged in a ring on the rotating disk. A rotating ring is coaxially rotatably mounted on the bottom of the fixed ring. An arc groove is formed on the bottom surface of the fixed ring. Part of the rotating ring blocks the arc groove, so that the fixed ring forms an air guiding area and a solid area. An air supply pipe communicating with the air guiding area is provided on the fixed ring. The air inlet pipe is installed on the rotating ring. During the rotation of the rotating ring, the air inlet pipe is connected to the air guiding area.

5. A vibrating shell machine for demolding sand shells of casting molds according to claim 4, characterized in that, A plurality of connecting posts are arranged parallel to the body and the rotating ring. One end of each connecting post is rotatably mounted on the rotating ring via a first rotating wheel. The other end of each connecting post is slidably inserted through a second rotating wheel, which is rotatably mounted on the body. The first rotating wheel and the second rotating wheel are connected by a spring.

6. A vibrating shell machine for demolding sand shells of casting molds according to claim 4, characterized in that, The pressing body includes a rotating column rotatably disposed at the bottom of the machine body and a transmission wheel disposed at the bottom of the rotating column. A transmission ring is provided between the plurality of transmission wheels, and a plurality of pressure plates for extruding the casting are disposed on the transmission wheel. The fixed plate is provided with a second transmission ring, which is connected to each of the lifting bodies in a transmission manner.

7. A vibrating shell machine for demolding sand shells of casting molds according to claim 6, characterized in that, During the rotation of the transmission wheel, several pressure plates alternately contact the casting.

8. A vibrating shell machine for demolding sand shells of casting molds according to claim 7, characterized in that, The pressure plate is slidably mounted on the transmission wheel via a slide rod, and the slide rod and the transmission wheel are connected by an elastic body; The vibrating shell machine also includes two guide rings coaxially arranged with the fixed ring. Both guide rings are fixed opposite to the transmission ring. One guide ring is located inside the plurality of lower pressing bodies, and the other guide ring is located outside the plurality of lower pressing bodies. The guide ring is provided with a guide cone surface and a pressing surface. The pressing surface is used to push the corresponding pressing plate down and into contact with the casting through part of the sliding rod. The guide cone surface is used to keep the pressing plate in contact with the casting.

9. A vibrating shell machine for demolding sand shells of casting molds according to claim 6, characterized in that, The lifting body includes a chassis fixed to the rotating disk and a cylinder rotatably fastened to the chassis. The cylinder is connected to the transmission ring. The cylinder and the chassis form a closed space. Two partition covers are arranged opposite each other in the closed space. The partition covers are fixed relative to the chassis and move relative to the cylinder. An oil supply pipe and two oil return pipes are provided at the bottom of the chassis. The oil supply pipe communicates with the space between the two partition covers, and the oil return pipes communicate with the inside of the partition covers. A guide tube communicating with the enclosed space is provided at the top of the cylinder, and a top column is slidably arranged inside the guide tube. The top column is controlled to extend and retract by an oil supply pipe and an oil return pipe.

10. A method of using a vibrating shell demolding machine for casting mold sand shell removal, comprising using a vibrating shell demolding machine for casting mold sand shell removal as described in any one of claims 1-9, characterized in that, Includes the following steps: The casting is placed between the lifting body and the pressing body, and the lifting body uses hydraulic pressure to press and fix the casting. The casting is provided with vibration power by an oscillator, and the direction of vibration of the casting is circumferential in a vertical plane; The rotating pressing body and the lifting body cause the casting to rotate around its own vertical axis. Combined with the vibration provided by the vibrating body, the casting vibrates in multiple directions. The upper and lower sides of the casting are squeezed by alternating control of several pressure plates on the lower body and several top columns on the support body, so that the debris squeezed between the pressure plates and the casting and the debris squeezed between the top columns and the casting fall off.

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