Post-treatment method for workpiece casting machining

Abstract

The invention relates to a post-treatment method for workpiece casting processing, belongs to the technical field of casting, and solves the problem that a casting post-treatment method in the prior art cannot efficiently clean a shell and separate waste residues. The method comprises the following steps that 1, a workpiece is fixed to a station, and vibration shell cleaning equipment is used for conducting vibration cleaning on a shell; 2, the workpiece subjected to vibration shell cleaning is conveyed to a high-pressure water shell cleaning station, and high-pressure water shell cleaning equipment is used for washing and cutting the residual shell so as to clean the residual shell; and 3, waste residues obtained after shell cleaning are filtered and collected through a separation unit and then enter a transportation unit to be recycled. According to the invention, rapid and efficient shell cleaning can be realized, and waste residue separation is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting, in particular to a post-processing method for workpiece casting processing. BACKGROUND

[0002] In the whole process of aviation investment casting, post-processing of castings is a key link between casting forming and product delivery. If the residual shell is not completely removed during post-processing, it will not only cause the tool to wear out, but also may expose hidden defects (such as subcutaneous porosity caused by residual shell) after processing, ultimately affecting the installation reliability of aviation parts. As the first key process, the shell cleaning technology directly restricts the efficiency and quality of the whole post-processing process. In view of the shell cleaning requirements of aviation investment castings, the existing post-processing method lacks efficient separation and recovery means, and it is difficult to solve the problems of long shell cleaning cycle, high difficulty and difficult separation of waste slag. SUMMARY

[0003] In view of the above analysis, the embodiments of the present application aim to provide a post-processing method for workpiece casting processing, to solve the problem that the existing casting post-processing method cannot efficiently clean the shell and separate the waste slag.

[0004] The purpose of the present application is mainly realized through the following technical solutions:

[0005] A post-processing method for workpiece casting processing, comprising the following steps:

[0006] Step 1: fix the workpiece on the work station, and use the vibration shell cleaning equipment to vibrate and clean the shell;

[0007] Step 2: transport the workpiece after vibration shell cleaning to the high-pressure water shell cleaning station, and use the high-pressure water shell cleaning equipment to flush and cut the residual shell for cleaning;

[0008] Step 3: after the waste slag of the shell cleaning shell is filtered and collected by the separation unit, it enters the transportation unit for recycling;

[0009] Step 4: the workpiece after shell cleaning is transported to the cutting and grinding station by a forklift for cutting and grinding processing.

[0010] Further, the step 1 is specifically:

[0011] Fix the workpiece on the work station, use the hydraulic breaking mechanical arm to position the breaking point, and hit the shell by the configured hydraulic hammer, so that the bonding force between the shell and the casting is weakened, and the shell block is peeled off.

[0012] Further, the horizontal angle between the hydraulic breaking mechanical arm in the step 1 and the shell is 60°.

[0013] Further, between the step 1 and the step 2,

[0014] Step 1': using a handheld pneumatic pick to remove the iron wire in the shell.

[0015] Further, the step 2 specifically comprises:

[0016] Step 2.1: transporting the workpiece to the truss station, the truss manipulator on the truss station changes the workpiece station and converts the direction of the workpiece to adapt to the water flushing direction;

[0017] Step 2.2: the high-pressure water equipment is connected to the six-axis manipulator, the six-axis manipulator controls the water gun of the high-pressure water equipment, adjusts the water pressure and flow rate, and removes the residual shell of the blind hole, groove, inner cavity and other parts of the casting.

[0018] Further, in the step 2.1, the truss includes X-axis, Y-axis and Z-axis; the truss manipulator includes a turnover structure, a rotating structure and an end picker, which is used to realize the clamping, turnover and rotation of the casting.

[0019] Further, the step 3 specifically comprises:

[0020] Step 3.1: the waste slag after shell cleaning is filtered and collected by the separation unit;

[0021] Step 3.2: after the waste slag is filtered and collected, it enters the transportation unit for recycling.

[0022] Further, in the step 3.2, the transportation unit includes a conveying structure, a lifting mechanism and a basket; the basket is arranged at the end of the conveying structure; the lifting mechanism is arranged at the lower part of the basket.

[0023] Further, the step 3.2 specifically comprises:

[0024] The conveying structure transports the waste slag to the basket, and the lifting mechanism lifts the basket to the forklift for recycling.

[0025] Further, the basket is provided with a weighing sensor, and the weighing sensor is used to remind the cleaning of the waste slag.

[0026] Further, the step 3.1 specifically comprises:

[0027] Step 3.1.1: the waste slag after vibration shell cleaning and manual pneumatic pick shell cleaning falls into the first separation unit through the waste slag falling port, and the iron wire and shell block are separated and collected by the first separation unit;

[0028] Step 3.1.2: the waste slag after high-pressure water shell cleaning enters the second separation unit through the waste slag falling port, and the shell block and iron filings are separated and collected by the second separation unit.

[0029] Further, the first separating unit comprises a first filter screen and a first receiver arranged in the same direction and inclined; the first filter screen is vertically arranged at the upper part of the first receiver; both the first filter screen and the first receiver are arc-shaped structures.

[0030] Further, the end of the first filter screen is vertically provided with a rebounding plate for rebounding the shell blocks in the first filter screen to make the shell blocks impact and break; the rebounding plate can be pulled out to remove or block the waste residue from falling.

[0031] Further, the first filter screen is further provided with an inclined structure for changing the inclination angle of the first filter screen and dumping the iron wires in the first filter screen.

[0032] Further, the first filter screen is further provided with an impact structure for impacting the first filter screen to prevent the shell blocks from blocking the mesh holes.

[0033] Further, the step 3.1.1 specifically comprises:

[0034] The waste residue after the vibration shell cleaning and the artificial pneumatic pick shell cleaning falls into the first filter screen, slides to the rebounding plate and rebounds multiple times to make the shell blocks impact and break; after the inclination structure is started to change the inclination angle of the first filter screen multiple times to make the shell blocks fully rebound and impact and break, the iron wires on the first filter screen are pulled out and slide to the iron wire collection basket, and the broken shell blocks leak into the first receiver for collection.

[0035] Further, the step 3.1.1 further comprises using the impact structure to impact the first filter screen, the shell blocks in the mesh holes of the first filter screen jump out of the mesh holes, continue to participate in the impact and break and leak into the first receiver for collection.

[0036] Further, the second separating unit comprises a second filter screen and a second receiver arranged in the same direction and inclined; the second filter screen is vertically arranged at the upper part of the second receiver; both the second filter screen and the second receiver are arc-shaped structures.

[0037] Further, the upper part of the second filter screen is provided with a push plate having a push plate main body and a handle, the end of the handle is connected to a telescopic air cylinder; the upper part of the push plate is hingedly provided with a magnet rod, and the end of the magnet rod is provided with a magnet block.

[0038] Further, the step 3.1.2 specifically comprises:

[0039] The waste residue after the high-pressure water shell cleaning treatment falls into the second filter screen, and the shell blocks slide to the end receiver of the second filter screen; the telescopic air cylinder is started, and the push plate pushes the shell blocks adhered to the second filter screen to the end receiver of the second filter screen.

[0040] Further, the step 3.1.2 further comprises:

[0041] The magnet block at the end of the magnet rod adsorbs the iron scraps in the waste slag collected in the center of the second filter screen.

[0042] Further, the step 3.1.2 further comprises:

[0043] The water leaks from the mesh of the second filter screen to the second receiver and is collected into the water tank.

[0044] Compared with the prior art, the present application can achieve at least one of the following beneficial effects:

[0045] (1) The present application adopts a vibration shell cleaning method to preliminarily clean the shell, and a high-pressure water device to clean the shell again, thereby realizing efficient, thorough and safe shell cleaning. The vibration shell cleaning quickly removes large-area and loosely adhered shell, and quickly reduces the total amount of shell; after the loose shell is removed by vibration, the bonding force between the residual shell and the casting is greatly reduced, and the high-pressure water can be removed at a lower pressure, thereby reducing the direct impact of water flow on the surface of the casting, enhancing the process applicability, reducing the risk of casting damage, and protecting the quality of the workpiece.

[0046] (2) The vibration shell cleaning first mechanically cleans the mechanical arm by hydraulic breaking, quickly pre-processes, and reduces the manual workload; the mechanical vibration shell cleaning is difficult to completely remove the shell residues in these areas due to the "vibration blind area", and then the manual pick is used for targeted cleaning to peel off the wire mesh, thereby avoiding the damage to the casting caused by mechanical removal, making the shell cleaning operation more flexible, and adapting to the individualized cleaning needs of various castings.

[0047] (3) In the present application, the horizontal angle between the hydraulic breaking mechanical arm and the shell is 60°. If the angle is too small, the tangential component is too large but the normal component is insufficient, it is difficult to break through the bonding force between the shell and the casting, resulting in incomplete shell removal; if the angle is too large, the normal component is strong but the tangential component is weak, the shell fragments are easy to accumulate on the surface of the casting, and even secondary adhesion due to vibration, affecting the subsequent cleaning. Under the 60° angle, the two components work together, which can quickly peel off the shell and timely remove the fragments, reduce the number of repeated vibrations, improve the overall efficiency, and the vibration force is transmitted through the component, which can reduce the direct impact force on the casting: the normal component is concentrated on the shell peeling, and the tangential component guides the fragments to smoothly separate, thereby reducing the risk of rigid collision between the shell fragments and the casting.

[0048] (4) Compared with the prior art, the present application sets a separation unit, the shell pieces in the first separation unit are bounced by the rebound plate to accelerate breaking, and the broken shell pieces fall into the first receiver to separate, and the shell pieces carried on the wire are separated from the wire after being broken. The inclined structure continuously changes the inclination angle of the first screen to accelerate the breaking of the shell pieces, improve the separation efficiency of the wire and the shell pieces, and improve the breaking efficiency of the shell pieces, thereby reducing the difficulty of peeling off the wire and the shell; the impact structure impacts the blocked shell particles in the mesh of the first filter screen to avoid affecting the use of the filter screen.

[0049] (5) The mold shell block with humidity and easy to stick to the filter screen is pushed to the end of the second filter screen by the push plate, and the iron scraps mixed in the magnetically attracted mold shell block are attracted by the magnet, so that the iron scraps in the waste slag are quickly and efficiently separated from the mold shell block and moisture.

[0050] In the present application, the above technical solutions can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present application will be described in the following content, and some advantages will become apparent from the description, or will be understood by implementing the present application. The purposes and other advantages of the present application can be achieved and obtained through the content specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0051] The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain the principles of the application. In the drawings:

[0052] Figure 1 Flowchart of post-processing method for workpiece casting processing;

[0053] Figure 2 Schematic diagram of crushing mold shell by hydraulic crushing mechanical arm;

[0054] Figure 3 Schematic diagram of transporting mold shell by truss and truss manipulator;

[0055] Figure 4 Schematic diagram of flushing workpiece by six-axis manipulator;

[0056] Figure 5 Structure diagram of impact structure of first separation unit and first filter screen;

[0057] Figure 6 Structure diagram of inclined structure of first filter screen;

[0058] Figure 7 Structure diagram of second separation unit;

[0059] Figure 8 Structure diagram of transportation unit.

[0060] LIST OF REFERENCE NUMERALS:

[0061] 1 - Shell cleaning device; 11 - Hydraulic breaking mechanical arm; 12 - High pressure water device; 13 - Six-axis mechanical hand; 14 - Gantry; 15 - Gantry mechanical hand; 2 - First separation unit; 21 - First filter screen; 211 - Bounce plate; 212 - Impact structure; 2121 - Eccentric wheel; 2122 - First connecting rod; 2123 - Second connecting rod; 2124 - Straight rail; 213 - Inclined structure; 2131 - Telescopic cylinder; 2132 - L-shaped rod; 2133 - Swing rod; 22 - First storage device; 3 - Second separation unit; 31 - Second filter screen; 311 - Push plate; 312 - Magnet block; 32 - Second storage device; 4 - Transportation unit; 41 - Basket; 42 - Transportation structure; 43 - Lifting mechanism. DETAILED DESCRIPTION

[0062] The preferred embodiments of the present application will be described in detail below with reference to the drawings, which constitute a part of this application. The drawings illustrate preferred embodiments of the present application and a principle of the present application, but are not intended to limit the scope of the present application.

[0063] Embodiment 1

[0064] A specific embodiment of the present application, as shown in Figure 1 discloses a post-processing method for workpiece casting processing, comprising the following steps:

[0065] Step 1: Fix the workpiece on the work station, and use the vibration shell cleaning device 1 to vibrate and clean the shell;

[0066] Step 2: Transport the workpiece after vibration shell cleaning to the high pressure water shell cleaning work station, and use the high pressure water shell cleaning device 1 to flush and cut the residual shell for cleaning;

[0067] Step 3: After the waste residue of the shell cleaned shell is filtered and collected by the separation unit, it enters the transportation unit 4 for recycling;

[0068] Step 4: The workpiece after shell cleaning is transported to the cutting and grinding work station by a forklift for cutting and grinding processing.

[0069] This embodiment adopts vibration shell cleaning method for preliminary shell cleaning, and high pressure water device 12 for secondary shell cleaning, to realize efficient, thorough and safe shell cleaning. The vibration shell cleaning quickly removes large area, loose and attached shell, and quickly reduces the total amount of shell. After the loose shell is removed by vibration, the bonding force between the residual shell and the casting is greatly reduced, and the high pressure water can be removed at a lower pressure, reducing the direct impact of water flow on the surface of the casting, enhancing the process applicability, reducing the risk of casting damage, and protecting the quality of the workpiece.

[0070] In step 1, it specifically includes:

[0071] Workpiece is fixed in the station, using hydraulic crushing mechanical arm 11 to locate the breaking point, through the configuration of hydraulic hammer hammering shell, the binding force between shell and casting is weakened, and the shell block is stripped.

[0072] As Figure 2 shown, the horizontal angle between the hydraulic crushing mechanical arm 11 and the shell in step 1 is 60°. The horizontal angle between the hydraulic crushing mechanical arm 11 and the shell is 60°. If the angle is too small, the tangential component will be too large and the normal component will be insufficient, making it difficult to break through the binding force between the shell and the casting, resulting in incomplete stripping of the shell; if the angle is too large, the normal component is strong, but the tangential component is weak, and the shell fragments are easy to accumulate on the surface of the casting, even secondary adhesion due to vibration, affecting subsequent cleaning. Under the angle of 60°, the two components work together to quickly strip the shell and timely remove the fragments, reducing the number of repeated vibrations and improving overall efficiency. The vibration force is transmitted through the component, which can reduce the direct impact force on the casting: the normal component concentrates on the shell stripping, and the tangential component guides the fragments to gently separate, reducing the risk of rigid collision between the shell fragments and the casting.

[0073] Further, between the step 1 and the step 2, there is also:

[0074] Step 1': using a handheld pneumatic pick to strip the shell and remove the iron wire in the shell.

[0075] The handheld pneumatic pick is configured with different power sources and vibration forces to meet the actual needs of different workpiece vibration shell stripping, and can also be used with electric hammer and other tools to achieve large-area shell stripping.

[0076] Vibration shell stripping first uses the mechanical cleaning of the hydraulic crushing mechanical arm 11 for rapid pretreatment and reduces the amount of manual work; mechanical vibration shell stripping is difficult to completely remove the shell residues in these areas due to "vibration blind area", and then uses manual pneumatic pick for targeted cleaning to strip the iron wire mesh and avoid damaging the casting by mechanical removal, making the shell stripping operation more flexible and adapting to the individual cleaning needs of various castings.

[0077] The step 2 specifically includes:

[0078] Step 2.1: transporting the workpiece to the truss 14 station, setting the truss manipulator 15 on the truss 14 to change the workpiece station and convert the direction of the workpiece to adapt to the water washing direction;

[0079] As Figure 3 shown, the truss 14 includes X-axis, Y-axis, and Z-axis; the truss manipulator 15 includes a turnover structure, a rotating structure, and an end picker for realizing clamping, turning over, and rotating of the casting.

[0080] The end picker of the truss manipulator 15 transports the workpiece to the work position of the six-axis manipulator 13, and rotates the workpiece through the rotating structure and flips the workpiece through the flipping structure, so that the workpiece can be subjected to high-pressure water flushing in all directions and at multiple angles to achieve precise shell cleaning.

[0081] Step 2.2: The high-pressure water equipment 12 is connected to the six-axis manipulator 13, and the six-axis manipulator 13 controls the water gun of the high-pressure water equipment 12 and adjusts the water pressure and flow rate to remove residual shell from blind holes, grooves, internal cavities and other parts of the casting.

[0082] High-pressure water shell cleaning mainly utilizes the impact force of water to clean the shell in the internal corners or deep holes of the casting. Through precise control and adjustment of the breaking force, the shell of the casting can be efficiently cleaned without damaging the casting. Figure 4 As shown in the figure, the six-axis manipulator 13 controls the high-pressure water gun to automatically operate according to the program and automatically adjusts the water pressure and flow rate during the shell cleaning process according to the set program, thereby realizing automatic high-pressure water shell cleaning of the casting.

[0083] The high-pressure water equipment 12 has adjustable pressure and flow rate. The water pressure of aluminum alloy castings is generally set to 20-40 MPa, and the water pressure of steel and other alloy castings is set to 68-136 MPa. The best effect is achieved at a water pressure of 102 MPa. If the pressure is too low, the shell cleaning efficiency will be reduced, and if the pressure is too high, the casting will be easily damaged.

[0084] In use, high-pressure water is delivered to the spray gun through a pipeline to form a high-pressure jet, which is directed at the casting surface to remove the shell. The main functions of high-pressure water are cutting and flushing. When the impact force generated by the high-speed jet on the shell exceeds the shear strength of the shell, the shell is cut into pieces. The water seeps into the cracks of the shell, breaking the connection between the shells. The shell is washed away with the water flow. In order to improve the shell cleaning efficiency, preferably, water is injected along the gap between the shell and the casting.

[0085] The step 3 specifically includes:

[0086] Step 3.1: The waste residue after shell cleaning is filtered and collected by the separation unit;

[0087] Step 3.2: After the waste residue is filtered and collected, it is transported to the transportation unit 4 for recycling.

[0088] The step 3.1 specifically includes:

[0089] Step 3.1.1: The waste residue after vibration shell cleaning and manual pneumatic pick cleaning falls into the first separation unit 2 through the waste residue discharge port, and the iron wire and shell pieces are separated and collected by the first separation unit 2;

[0090] As shown in the figure, Figure 5As shown, the first separation unit 2 comprises a first filter screen 21 and a first receiver 22 arranged in the same direction and inclined; the first filter screen 21 is vertically arranged at the upper part of the first receiver 22; both the first filter screen 21 and the first receiver 22 are arc-shaped structures.

[0091] The end of the first filter screen 21 is vertically provided with a rebounding plate 211 for rebounding the shell blocks in the first filter screen 21 to make the shell blocks impact and break; the rebounding plate 211 can be pulled out to remove or block the waste residue from falling.

[0092] The first filter screen 21 is further provided with an inclined structure 213 for changing the inclination angle of the first filter screen 21 and dumping the iron wires in the first filter screen 21.

[0093] The first filter screen 21 is further provided with an impact structure 212 for impacting the first filter screen 21 to prevent the shell blocks from blocking the mesh holes.

[0094] Specifically, step 3.1.1 includes:

[0095] The waste residue after the vibration shell cleaning and the artificial pneumatic pick shell cleaning falls into the first filter screen 21, slides to the rebounding plate 211 and rebounds multiple times to make the shell blocks impact and break; after the inclination angle of the first filter screen 21 is changed multiple times by the inclined structure 213 to make the shell blocks fully rebound and impact and break, the iron wires on the first filter screen 21 are pulled out and slide to the iron wire collection basket, and the broken shell blocks leak into the first receiver 22 for collection.

[0096] Starting the inclined structure 213 specifically includes: the telescopic air cylinder 2131 pulls the L-shaped rod 2132, the L-shaped rod 2132 rotates and drives the swing rod 2133 at the other end to rotate, so that the swing rod 2133 rotates the first filter screen 21 to change the inclination angle.

[0097] The impact structure 212 is used to impact the first filter screen 21, and the shell blocks in the mesh holes of the first filter screen 21 jump out of the mesh holes, continue to participate in impact and break and leak into the first receiver 22 for collection.

[0098] Using the impact structure 212 specifically includes: starting the motor, the motor drives the eccentric wheel 2121 to rotate, the eccentric wheel 2121 drives the first connecting rod 2122 to rotate, the end of the first connecting rod 2122 is connected with the second connecting rod 2123, the second connecting rod 2123 makes reciprocating sliding motion in the straight rail 2124, so that the impact hammer connected by the return spring makes reciprocating horizontal motion to impact the filter screen. The return spring makes the impact hammer reset.

[0099] Step 3.1.2: the waste residue after high-pressure water shell cleaning enters the second separation unit 3 through the waste residue falling port, and the shell blocks and iron scraps are separated and collected from the water by the second separation unit 3.

[0100] As shown,Figure 6 As shown, the second separation unit 3 comprises a second filter screen 31 and a second receiver 32 arranged obliquely; the second filter screen 31 is vertically arranged at the upper portion of the second receiver 32; both the second filter screen 31 and the second receiver 32 are arc-shaped structures.

[0101] The upper portion of the second filter screen 31 is provided with a push plate 311 having a push plate 311 main body and a handle, the end of the handle is connected to a telescopic air cylinder 2131; a magnet rod is hingedly arranged at the upper portion of the push plate 311, and a magnet block 312 is arranged at the end of the magnet rod.

[0102] Specifically, the step 3.1.2 specifically comprises:

[0103] The waste residue after high-pressure water shell cleaning falls into the second filter screen 31, and the shell block slides to the end receiver of the second filter screen 31; the telescopic air cylinder 2131 is started, and the push plate 311 pushes the shell block adhered to the second filter screen 31 to the end receiver of the second filter screen 31;

[0104] The magnet block 312 at the end of the magnet rod adsorbs the iron filings in the waste residue collected in the center of the second filter screen 31;

[0105] Water leaks from the mesh of the second filter screen 31 to the second receiver 32 and is collected into a water tank.

[0106] Compared with the prior art, the embodiment sets a separation unit, which comprises a first separation unit 2 and a second separation unit 3.

[0107] The first separation unit 2 comprises a first filter screen 21 and a first receiver 22 arranged obliquely; the first filter screen 21 is provided with a rebounding plate 211; the waste residue generated by vibration shell cleaning and manual shell cleaning is accelerated to impact the rebounding plate 211 due to the oblique angle, and rebounds and impacts again; the oblique structure 213 makes the shell block accelerate to impact the rebounding plate 211 multiple times, improves the breaking efficiency, and reduces the difficulty of stripping the iron wire from the shell; and the impact structure 212 is used to knock out the shell particles blocked in the mesh of the first filter screen 21, so as to avoid affecting the use of the filter screen.

[0108] The upper portion of the second filter screen 31 is provided with a push plate 311 for pushing the shell block with humidity which is easy to stick to the filter screen to the end of the second filter screen 31 for collection, and a rod is hingedly arranged above the push plate 311, and a magnet block 312 is arranged at the end of the rod for adsorbing iron filings, quickly separating iron filings and shell blocks, and water.

[0109] In the step 3.2, the transportation unit 4 comprises a conveying structure 42, a waste residue lifting mechanism, and a basket 41; the basket 41 is arranged at the end of the conveying structure 42; the waste residue lifting mechanism is arranged at the lower portion of the basket 41.

[0110] Specifically, the step 3.2 is specifically:

[0111] The conveying structure 42 transports the waste residue to the material basket 41, and the waste residue lifting mechanism lifts the material basket 41 to the forklift for recycling.

[0112] Furthermore, the material basket 41 is equipped with a weighing sensor, which is used to remind the user to clean up the waste residue.

[0113] like Figure 7 As shown, this embodiment is equipped with a transport unit 4, which transports the waste residue from vibration cleaning, manual cleaning and high-pressure water cleaning to the material basket 41 and lifts it to a forklift for processing through the transport structure 42, which is efficient and convenient.

[0114] Example 2

[0115] This embodiment is an apparatus for implementing the workpiece casting post-processing method of Embodiment 1, including a shell cleaning device 1, a separation unit and a transportation unit 4.

[0116] The shell cleaning device 1 includes a vibratory shell cleaning device 1 for vibratory shell cleaning, such as... Figure 2 As shown, the vibratory shell clearing device 1 in this embodiment is a hydraulic crushing robotic arm 11. The end of the hydraulic crushing robotic arm 11 is equipped with a hydraulic hammer with adjustable frequency and pressure. The vibration weakens the force between the shell and the casting, causing the shell to separate from the casting.

[0117] The shell cleaning device 1 also includes a pneumatic pick, which is used for manual shell cleaning and peeling off the iron wires inside the shell.

[0118] like Figure 3 and Figure 4 As shown, the shell cleaning device 1 also includes a high-pressure water shell cleaning device 1, which includes a high-pressure water device 12, a six-axis robot 13, a gantry 14, and a gantry robot 15. The high-pressure water device 12 is used to raise the high-pressure water, and the six-axis robot 13 is connected to the high-pressure water device 12 to control the high-pressure water gun of the high-pressure water device 12 to thoroughly remove residual shells from blind holes, grooves, inner cavities, and other parts.

[0119] The gantry 14 includes X-axis, Y-axis, and Z-axis, while the gantry robot 15 includes a flipping structure, a rotating structure, and an end effector for gripping, flipping, and rotating shells. The movement, arm swing, and rotation of the gantry robot 15 along the X, Y, and Z axes are all achieved by servo motors driving rack and pinion transmissions, with a repeatability accuracy of ≤±5mm, ensuring smooth and flexible movement trajectories. The end effector of the gantry 14 can handle the gripping and flipping of different shell shapes. The gripping fixture is driven by a servo motor and uses a pin-shaft positioning system, enabling quick, simple, and secure clamping.

[0120] The separating unit is used for separating iron wires from shell blocks in waste residues of vibration shell cleaning and manual shell cleaning, and separating shell blocks from water in waste residues in the high-pressure water shell cleaning device 1, and comprises a first separating unit 2 and a second separating unit 3.

[0121] As shown in the drawings, the first separating unit 2 comprises a first filter screen 21 obliquely arranged at the upper portion and a first receiver 22 arranged at the lower portion of the first filter screen 21. Figure 5

[0122] The end of the first filter screen 21 is provided with a collection basket for collecting the iron wires.

[0123] The end of the first filter screen 21 is vertically provided with a rebounding plate 211. The first filter screen 21 is obliquely arranged, and when the iron wires and large shell blocks slide down from the middle or starting end of the first filter screen 21 to the rebounding plate 211, the rebounding plate 211 rebounds the unbroken large shell blocks to the middle or starting end and impacts and breaks them after they slide down to the rebounding plate 211 again, while the iron wires do not change after rebounding. The rebounding plate 211 is made of rubber material.

[0124] The rebounding plate 211 can move on the slide rails to move away or block the waste residues from falling down. The rebounding plate 211 is inserted into the slide rails downward to the end of the first filter screen 21 to block the waste residues from sliding into the collection basket. The rebounding plate 211 is pulled out from the slide rails, and the iron wires in the first filter screen 21 slide down and into the collection basket.

[0125] The first filter screen 21 is provided with an impact structure 212 for bouncing the shell blocks blocked in the mesh of the first filter screen 21 by impacting the first filter screen 21 and participating in the rebounding and breaking.

[0126] The impact structure 212 is arranged at one side of the first filter screen 21. Exemplarily, the impact structure 212 comprises an eccentric wheel 2121, a first connecting rod 2122, a second connecting rod 2123, a straight rail 2124, an impact hammer and a return spring.

[0127] The eccentric wheel 2121 is centrally provided with a motor drive, and the eccentric wheel 2121 is provided with a first recess at the near edge, and one end of the first connecting rod 2122 is arranged in the first recess and can move in the first recess.

[0128] The other end of the first connecting rod 2122 is connected with the second connecting rod 2123. The second connecting rod 2123 is arranged on the straight rail 2124, and the second connecting rod 2123 can slide in the straight rail 2124. Thus, the second connecting rod 2123 converts the rotary motion of the eccentric wheel 2121 into the linear motion along the straight rail 2124. The impact hammer is arranged at the other end of the second connecting rod 2123 and moves linearly with the second connecting rod 2123. Further, in order to reset as soon as possible after impact, a spring is arranged between the second connecting rod 2123 and the impact hammer.

[0129] ​The first filter screen 21 also has an inclined structure 213, which is set on the other side of the first filter screen 21. The inclined structure 213 is used to pour out the iron wire in the first filter screen 21 and to accelerate the impact of the shell block in the first filter screen 21 to the rebound plate 211 by repeatedly changing the inclination angle, thereby improving the crushing efficiency of the shell block.

[0130] For example, the tilting structure 213 includes a telescopic cylinder 2131, an L-shaped rod 2132, and a rocker arm 2133. One end of the L-shaped rod 2132 is connected to the cylinder, and the other end is connected to the rocker arm 2133. The other end of the rocker arm 2133 is hinged to the first filter screen 21.

[0131] The extension and retraction of the telescopic cylinder 2131 drives the rotation of the L-shaped rod 2132, which in turn drives the swing rod 2133 to swing, thereby changing the angle between the first filter screen 21 and the horizontal plane. Furthermore, the L-shaped rod 2132 limits the tilt angle of the first filter screen 21 to less than 90°. As the angle between the first filter screen 21 and the horizontal plane increases, the speed and force of the shell block impacting the rebound plate 211 increase, thus improving the efficiency of shell crushing.

[0132] It should be noted that the impact structure 212 and the tilting structure 213 are electrically connected to the host computer of the shell cleaning device and are controlled by the host computer. This is existing technology and will not be described in detail here.

[0133] The first receiver 22 has a fixed tilt angle and a first conical collection box at its end for collecting the shell blocks. The first conical collection box is located above the transport structure 42, and the bottom of the first conical collection box is a through hole. After being collected by the first conical collection box, the shell blocks fall directly into the transport structure 42.

[0134] The second separation unit 3 is located at the lower part of the high-pressure water cleaning station. For example... Figure 6 As shown, the second separation unit 3 includes a second filter screen 31 arranged at an angle and a second receiver 32 disposed below the second filter screen 31. The second filter screen 31 is used to collect small pieces of the housing, and the second receiver 32 is connected to a water storage tank.

[0135] Since the shell block after high-pressure water cleaning contains water, it is easily adsorbed onto the filter screen. Therefore, a push plate 311 structure is provided on the second filter screen 31.

[0136] The pusher plate 311 structure includes a pusher plate 311 body and a handle. The shape of the pusher plate 311 body matches the curvature of the second filter screen 31 to facilitate pushing the shell block into the second conical collection box at the end. The second conical collection box is located above the conveying structure 42. The bottom of the second conical collection box is a through hole. After being collected by the second conical collection box, the shell block falls directly into the conveying structure 42.

[0137] The end of the handle is connected to a telescopic cylinder 2131, and the push plate 311 moves on the second filter screen 31 by the telescopic movement of the end of the telescopic cylinder 2131.

[0138] During the removal process, some iron filings are generated from the iron wire. A magnet block 312 is provided on the upper part of the push plate 311, and the magnet block 312 is located at the end of the rod. The middle part of the rod is hinged to the top of the push plate 311. The rod can move with the push plate 311 and can rotate at multiple angles to attract the iron filings from the iron wire.

[0139] It should be noted that the second filter 31 and the push plate 311 are both made of non-ferrous materials. In this embodiment, the first filter 21, the second filter 31, the first collector 22, and the second collector 32 are all arc-shaped structures for easy collection.

[0140] like Figure 7 As shown, the transport unit 4 includes a material basket 41, a transport structure 42, and a lifting mechanism 43.

[0141] The conveying structure 42 is located below the waste discharge port, and the material basket 41 is located at the end of the conveying structure 42. The conveying structure 42 is used to transport the waste from the waste discharge port to the material basket 41. Furthermore, the material basket 41 is equipped with a weighing sensor to remind the operator to clean the waste. When the weight of the broken shells in the material basket exceeds three tons, the weighing sensor uploads the information to the host computer, which then reminds the operator to promptly clean the shells and perform subsequent recycling work. The lifting mechanism 43 is an X-shaped lifting mechanism used to lift the material basket 41 onto a forklift.

[0142] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A post-processing method for workpiece casting, characterized in that, Includes the following steps: Step 1: Fix the workpiece at the work station and use the vibration shell cleaning equipment (1) to clean the shell by vibration; Step 2: Transport the workpiece after vibration shell cleaning to the high-pressure water shell cleaning station, and use the high-pressure water shell cleaning equipment (1) to flush and cut the residual shell to clean it; Step 3: After the shell is cleaned, the waste residue is collected by the separation unit and then enters the transportation unit (4) for recycling; Step 4: The cleaned workpiece is transported to the cutting and grinding station by forklift for cutting and grinding.

2. The post-processing method for workpiece casting according to claim 1, characterized in that, Step 1 specifically involves: The workpiece is fixed at the work station, and the hydraulic crushing robot arm (11) is used to locate the crushing point. The shell is hammered by the configured hydraulic hammer, the bonding force between the shell and the casting is weakened, and the shell block is peeled off.

3. The post-processing method for workpiece casting according to claim 2, characterized in that, The horizontal angle between the hydraulic crushing robot arm (11) in step 1 and the shell is 60°.

4. The post-processing method for workpiece casting according to claim 1, characterized in that, The step between step 1 and step 2 also includes: Step 1': Use a handheld jackhammer to peel off the mold shell and remove the wires inside.

5. The post-processing method for workpiece casting according to claim 1, characterized in that, Step 2 specifically includes: Step 2.1: Transport the workpiece to the truss (14) station, and the truss robot (15) set on the truss (14) performs station change on the workpiece and changes the orientation of the workpiece to adapt to the direction of water flushing. Step 2.2: The high-pressure water equipment (12) is connected to the six-axis robot (13). The six-axis robot (13) controls the water gun of the high-pressure water equipment (12), adjusts the water pressure and flow rate, and removes the residual shell from the blind holes, grooves and inner cavities of the casting.

6. The post-processing method for workpiece casting according to claim 5, characterized in that, In step 2.1, the truss (14) includes an X-axis, a Y-axis, and a Z-axis.

7. The post-processing method for workpiece casting according to claim 1, characterized in that, Step 3 specifically includes: Step 3.1: The waste residue after shell cleaning is collected by filtration through the separation unit; Step 3.2: After the waste residue is filtered and collected, it enters the transportation unit (4) for recycling.

8. The post-processing method for workpiece casting according to claim 7, characterized in that, In step 3.2, the transport unit (4) includes a transport structure (42), a lifting mechanism (43), and a material basket (41); the material basket (41) is located at the end of the transport structure (42); the lifting mechanism (43) is located at the lower part of the material basket (41).

9. The post-processing method for workpiece casting according to claim 8, characterized in that, Step 3.2 specifically involves: The conveying structure (42) transports the waste to the basket (41), and the lifting mechanism (43) lifts the basket (41) to the forklift for recycling.

10. The post-processing method for workpiece casting according to claim 9, characterized in that, The material basket (41) is equipped with a weighing sensor, which is used to remind the waste residue to be cleaned.

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