A casting processing apparatus for a mechanical part and a sand casting method thereof

Abstract

The application discloses a casting processing device for mechanical parts and a sand mold casting method thereof, belongs to the casting processing technical field, and relates to the casting processing device for mechanical parts, which comprises a screening mechanism and a driving piece one capable of driving the screening mechanism to screen spherical workpieces. The screening mechanism comprises a screening frame, the bottom of the screening frame is provided with a driving piece two and two top screening mechanisms arranged in parallel, the two top screening mechanisms are connected with the driving piece two through a same bearing plate, and the top screening mechanism comprises a plurality of supporting plates. The casting processing device for mechanical parts can pre-screen the spherical workpieces processed by the lost foam casting process through screening, so that the spherical workpieces can be input into different subsequent processes, and unnecessary process links are reduced.

Description

Technical Field

[0001] This invention relates to the field of casting processing technology, specifically to a casting processing device for mechanical parts and a sand casting method thereof. Background Technology

[0002] Lost foam casting can produce finely cast parts without flash, burrs, or cold shuts, but there are still some errors. Moreover, because the space where the foam model is poured in the lost foam casting process can be affected by the changes in the foam model during the pouring process, the dimensional accuracy of the casting will be affected. Therefore, castings from the same batch may have different dimensions. For spherical workpieces whose dimensions meet the tolerance requirements, it is only necessary to grind the gate and then polish them. For spherical workpieces whose dimensions do not meet the tolerance requirements, they need to be ground until they meet the tolerance requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a casting processing device for mechanical parts and a sand casting method thereof, which can pre-screen spherical workpieces processed by lost foam casting process through screening so that they can be input into different subsequent processes, thereby reducing unnecessary process steps.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a casting processing device for mechanical parts and a sand casting method thereof, comprising a screening mechanism and a driving component one capable of driving the screening mechanism to screen spherical workpieces. The screening mechanism includes a screening frame, and a driving component two and two top-splitting mechanisms arranged in a parallel array are provided at the bottom of the screening frame. The two top-splitting mechanisms are connected to the driving component two through the same bearing plate. Each top-splitting mechanism includes several support plates, and several top rods are arranged in an array along the longitudinal direction of the top of the support plates. The several top rods can pass through several screening holes on the screening frame, and the top surface of the top rods is provided with an inclined surface. The driving component two synchronously drives the two top-splitting mechanisms to reciprocate and push the spherical workpieces that have not passed through the screening holes and remain on the screening holes to both sides of the screening frame in a direction perpendicular to the length direction of the screening frame.

[0005] Furthermore, the top-separating mechanism also includes an anti-blocking component. When the top rod moves upward and fails to push away the spherical workpiece that has fallen onto the screening hole, the second drive component works in conjunction with the anti-blocking component to repeatedly strike the bottom of the spherical workpiece, causing the anti-blocking component to push the spherical workpiece away from the screening hole.

[0006] Furthermore, the anti-blocking component is installed at the bottom of several trays and is connected to the support plate. The anti-blocking component includes:

[0007] Sleeve 1 has an outer surface that is movably connected to the inner wall of the bearing plate, and its surface is provided with an inclined groove. The inclined groove is slidably connected to a protruding nail provided on the inner wall of the bearing plate. A support rod is rotatably connected to the inner wall of sleeve 1. The top of the support rod is connected to several support plates in the same top-splitting mechanism. Several hemispherical grooves are provided at the bottom of sleeve 1. The movement of the bearing plate can drive sleeve 1 to rotate.

[0008] The striking plate has hemispheres on its top that are adapted to several hemispherical grooves. Guide rods are slidably connected to the inner walls of both ends of the striking plate. The tops of two guide rods are fixedly connected to the bottom of the support plate. A spring is fixedly connected to the top of the striking plate, and the other end of the spring is fixedly connected to the bottom of the support plate.

[0009] Furthermore, the number of anti-blocking components is multiple, and each anti-blocking component is connected to a plurality of push rods. The anti-blocking component includes:

[0010] A push rod, the middle end surface of which is slidably connected to the inner wall of a top rod, a cavity through which the upper end of the push rod can move longitudinally is provided, the upper end of the push rod is made of deformable material, the cross-sectional area of ​​the cavity is larger than the cross-sectional area of ​​the push rod, and a second spring is sleeved on the surface of the push rod, one end of the second spring abutting against the inner surface of the top rod, and several hemispherical grooves are provided at the bottom of the push rod;

[0011] Sleeve 2 has hemispherical parts distributed on its top that are adapted to several hemispherical grooves 2. The outer surface of sleeve 2 is movably connected to the inner wall of the support plate, and its surface is provided with inclined grooves 2. The inclined grooves 2 are slidably connected to the protruding nails 2 provided on the inner wall of the support plate. A cover 1 is fixedly connected to the top of sleeve 2. A cover 2 is provided at the bottom of the push rod. The cover 1 and cover 2 abut against each other. The cover 2 has a movable cavity inside that allows the lower end of the push rod to move longitudinally. A limiting baffle is provided at the top of the support plate. Both cover 1 and cover 2 are slidably connected to the inner wall of the limiting baffle. A spring 3 is sleeved on sleeve 2. One end of the spring 3 abuts against cover 1, and the other end of the spring 3 abuts against the support plate.

[0012] Furthermore, the screening frame is inclined, and there are notches on both sides of the inclined end of the screening frame. The top rod can pass through the screening hole adjacent to the notch to push the spherical workpiece that is staying on the screening hole out of the screening hole. After the spherical workpiece is lifted to a position level with or above the notch, the spherical workpiece can roll along the inclined surface of the top of the top rod and flip over the notch to move out of the screening frame. The screening holes are arranged in a parallel array, and the screening frame is provided with a number of blocking members distributed in an array.

[0013] Furthermore, the blocking member is an arc-shaped protrusion, and the blocking members are staggered between two adjacent rows of screening holes arranged parallel to the length direction of the screening frame.

[0014] Furthermore, the blocking member is elongated and arranged along the inclined direction of the screening frame, and the blocking member is located between two adjacent rows of screening holes arranged parallel to the length direction of the screening frame.

[0015] Furthermore, the screening mechanism also includes a discharge rack, the upper and lower ends of which are fixedly connected to the upper and lower ends of the screening rack, respectively, and the discharge rack is provided with a plurality of sliding grooves, which are movably connected to the surfaces of a plurality of top rods.

[0016] Furthermore, the second driving component includes a slide, a slide plate is slidably connected to the inner side of the slide, a T-shaped frame is slidably connected to one side of the slide plate, one end of the T-shaped frame is fixedly connected to the bottom of the support plate, a transverse sliding groove is provided on one side of the T-shaped frame, and a longitudinal sliding groove is provided on the other side of the T-shaped frame.

[0017] Furthermore, the second driving component also includes a support platform, which is connected to the screening mechanism. A motor is installed on the top of the support platform, and one end of the motor output shaft is fixedly connected to a first driving disk and a second driving disk. A triangular groove is opened on one side of the first driving disk, and a diamond-shaped groove is opened on the second driving disk. The support platform is fixedly installed with a first support column and a second support column. One end of the first support column is rotatably connected to an L-shaped rod, one end of which is slidably connected to the inner wall of the triangular groove, and the other end of which is slidably connected to the inner wall of the longitudinal chute. One end of the second support column is rotatably connected to a straight rod, one end of which is slidably connected to the inner walls of the transverse chute and the diamond-shaped groove.

[0018] In at least one embodiment of the present invention, a sand casting method is provided, comprising:

[0019] Separate the spherical workpieces produced by lost foam casting from the molding sand;

[0020] The spherical workpieces separated from the molding sand are fed into the aforementioned screening mechanism, and the spherical workpieces discharged from the screening frame are sent to the grinding station for grinding.

[0021] The spherical workpieces discharged from under the screening rack are sent to the polishing station for polishing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a first perspective view of the overall structure provided in Embodiment 1 of the present invention;

[0024] Figure 2This is a second perspective view of the overall structure provided in Embodiment 1 of the present invention;

[0025] Figure 3 This is a top view of the overall structure provided in Embodiment 1 of the present invention;

[0026] Figure 4 This is a perspective view of the material rack structure provided in Embodiment 1 of the present invention;

[0027] Figure 5 This is a schematic diagram of the screening frame and blocking member (arc-shaped protrusion) provided in Embodiment 1 of the present invention;

[0028] Figure 6 This is a schematic diagram of the screening frame and blocking member (long strip shape) provided in Embodiment 1 of the present invention;

[0029] Figure 7 This is a first perspective view of the driving disk 2 and driving disk 1 of the driving component 2 provided in Embodiment 1 of the present invention in a separated state;

[0030] Figure 8 This is a second perspective view of the driving disk 2 and driving disk 1 of the driving component 2 provided in Embodiment 1 of the present invention in a separated state;

[0031] Figure 9 This is a partial exploded view of the anti-blocking component provided in Embodiment 2 of the present invention;

[0032] Figure 10 This is a partial perspective view of the anti-blocking component provided in Embodiment 3 of the present invention;

[0033] Figure 11 This is a first exploded view of the anti-blocking component provided in Embodiment 3 of the present invention;

[0034] Figure 12 This is a second exploded view of the anti-blocking component provided in Embodiment 3 of the present invention. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Please see Figures 1-8A casting processing device for mechanical parts and its sand casting method, comprising a screening mechanism 1 and a drive component 2 for driving the screening mechanism 1 to screen spherical workpieces. The drive component 2 is mounted on the equipment platform. The drive component 2 includes, but is not limited to, a dual-axis motor. The two output ends of the dual-axis motor are fixedly connected to a turntable. The turntable is eccentrically connected to a connecting rod. The drive component 2 can drive the screening mechanism 1 to move up and down reciprocally. The screening mechanism 1 includes a screening frame 11, which is inclined. The top of the inclined upper end of the screening frame 11 is provided with a discharge port (not shown in the figure). The bottom of the screening frame 11 is provided with a drive component 3 and two top-splitting mechanisms 4 arranged in a parallel array. The two top-splitting mechanisms 4 are connected to the drive component 3 through the same bearing plate 5.

[0037] The top separating mechanism 4 includes several support plates 41. Several top rods 42 are arranged in an array along the longitudinal direction on the top of the support plates 41. The several top rods 42 can pass through several screening holes 111 on the screening frame 11 respectively, and the top surface of the top rods 42 is provided with an inclined surface.

[0038] In this embodiment, the shape of the top rod 42 is not specifically limited, but is preferably a cuboid. With the middle of the screening frame 11 as the boundary, the top of the top rod 42 is inclined towards the side of the screening frame 11. Figure 3 From the main perspective, the screening frame 11 has eight rows of screening holes 111. The top of the push rods 42 acting on the upper four rows is inclined upwards towards the top of the screening frame 11, and the top of the push rods 42 acting on the lower four rows is inclined downwards towards the bottom of the screening frame 11. When the spherical workpiece falls into the screening frame 11 from the right, the spherical workpiece moves to the left along the surface of the screening frame 11. Small balls with a diameter smaller than the screening hole 111 can pass through the screening hole 111, while large balls that cannot fall will cover the screening hole 111. When the push rods 42 are working, they push the large balls out of the screening hole 111. The large balls in the upper four rows tend to move upwards, and the large balls in the lower four rows tend to move downwards. This causes the large balls that cannot fall to gradually move to both sides of the screening frame 11 during screening, and finally push the large balls to the lower corner of the screening frame 11.

[0039] The screening frame 11 has notches 12 on both sides of its inclined end. The top rod 42 can pass through the screening hole 111 adjacent to the notch 12 to push the spherical workpiece that is staying on the screening hole 111 out of the screening hole 111. After the spherical workpiece is lifted to a position that is level with or higher than the notch 12, the spherical workpiece can roll along the top inclined surface of the top rod 42 and flip over the notch 12 to move outside the screening frame 11. The screening holes 111 are arranged in a parallel array, so that the large ball is pushed to the lower corner of the screening frame 11 and then pushed to the notch 12 by the top rod 42. Due to the inclined setting of the top of the top rod 42, the large ball rolls along the top of the top rod 42 to the notch 12 and then rolls out of the notch 12 and is collected by the collection box below the notch 12.

[0040] In this embodiment, the screening frame 11 is provided with a plurality of blocking members 13 arranged in an array. The blocking members 13 can block the rolling spherical workpiece. The spherical workpiece falls into the adjacent screening holes 111. The blocking members 13 can be arc-shaped protrusions, and the blocking members 13 are staggered between two adjacent rows of screening holes 111 arranged parallel to the length direction of the screening frame 11.

[0041] The blocking member 13 can also be elongated and arranged along the inclined direction of the screening frame 11. The blocking member 13 is located between two adjacent rows of screening holes 111 arranged parallel to the length direction of the screening frame 11. This allows the spherical workpiece to roll quickly toward the screening hole 111 after falling into the screening frame 11. This avoids some spherical workpieces from moving on the plane between the screening holes 111 for a long time when they push each other. It increases the probability that each spherical workpiece moves to the screening hole 111 in a short time and improves the screening efficiency.

[0042] The screening mechanism 1 also includes a discharge rack 14, the upper and lower ends of which are fixedly connected to the upper and lower ends of the screening rack 11, respectively. The discharge rack 14 consists of two symmetrical discharge plates, with one end of the two discharge plates 14 abutting each other. The horizontal height of the abutting end of the two discharge plates 14 is greater than the distance between the two distancing ends. The spherical workpiece falling from the screening hole 111 will roll along the surface of the discharge plates toward the distance between the two distancing ends, and fall onto the screen after rolling out of both sides of the discharge rack 14. The collection box below has several grooves 15 on the discharge rack 14. The grooves 15 are movably connected to the surfaces of several push rods 42. The push rods 42 can slide longitudinally or laterally along the grooves 15. The width of the grooves 15 is smaller than the diameter of the spherical workpiece. When the spherical workpiece falling from the screening hole 111 lands on the grooves 15, the sliding of the push rods 42 will push the spherical workpiece out of the grooves 15, thus avoiding the problem of the spherical workpiece being blocked by the grooves 15 and unable to fall.

[0043] Drive component 2 3 synchronously drives two top-separating mechanisms 4 to reciprocate, pushing the spherical workpieces falling on the screening holes 111 towards both sides of the screening frame 11. Drive component 2 3 includes a slide 301, with a slide plate 302 slidably connected to the inner side of the slide 301. A T-shaped frame 303 is slidably connected to one side of the slide plate 302. One end of the T-shaped frame 303 is fixedly connected to the bottom of the support plate 5. A transverse groove 304 is provided on one side of the T-shaped frame 303, and a longitudinal groove 305 is provided on the other side of the T-shaped frame 303. Drive component 2 3 also includes a support platform 306, which is connected to the screening mechanism 1. Both ends of the support platform 306 are fixedly connected to both ends of the screening frame 11 by support members. Both ends of the screening frame 11 are slidably connected to... Guide rods, multiple guide rods can be set so that the inclined screening frame 11 can move up and down along the guide rods. The bottom of the support platform 306 is rotatably connected to two connecting rods on the drive component 2. The support platform 306 is driven to move up and down by the rotation of the dual-axis motor, thereby driving the screening frame 11 to move up and down reciprocally to screen the spherical workpieces on the screening frame 11. A motor 307 is installed on the top of the support platform 306. One end of the output shaft of the motor 307 is fixedly connected to the drive disk 308 and the drive disk 309. A triangular groove 310 is opened on one side of the drive disk 308, and a diamond groove 311 is opened on the drive disk 309. The support platform 306 is fixedly installed with the support column 312 and the support column 313.

[0044] One end of support column 312 is rotatably connected to an L-shaped rod 314, and one end of support column 313 is rotatably connected to a straight rod 315. Figure 7 and Figure 8 The view shown is of the drive disk 308 and drive disk 309 in a separated state. One end of the L-shaped rod 314 is slidably connected to the inner wall of the triangular groove 310, and the other end of the L-shaped rod 314 is slidably connected to the inner wall of the longitudinal groove 305. One end of the straight rod 315 is slidably connected to the inner walls of the transverse groove 304 and the diamond groove 311, respectively.

[0045] In this embodiment, a monitoring device can be installed on the top of the screening rack 11. The monitoring device can use a camera to capture the blockage of the screening holes 111 on the screening rack 11 and transmit the observation information to a computer for display, so that staff can inspect and monitor. When the staff observes that the screening holes 111 on the screening rack 11 are severely blocked, they can remotely control the top separating mechanism 4 to start operation through the controller to improve screening efficiency. When the impact of the blockage is low, the top separating mechanism 4 can be turned off to save energy.

[0046] The rotation of motor 307 drives drive disc 308 and drive disc 309 to rotate synchronously. Drive disc 308 rotates, causing L-shaped rod 314 to rotate, which in turn drives slide plate 302 and its T-shaped frame 303 to move laterally back and forth. Drive disc 309 rotates, causing straight rod 315 to rotate, which in turn drives T-shaped frame 303 to move up and down. Thus, the rotation of motor 307 drives T-shaped frame 303 to move up and down, then laterally and then up again, then down and then laterally in the opposite direction, completing one cycle. The movement of the T-shaped frame 303 will drive the top separating mechanism 4 to perform the same dynamic movement, thereby causing several top rods 42 to reciprocate from the screening holes 111, pushing the large ball material that cannot fall to the side of the screening frame 11, and finally pushing the large ball material out from the notch 12, so as to avoid the large ball material clogging the screening holes 111, and to avoid the accumulation of a large number of spherical workpieces clogging the screening holes 111 during the long-term working state of the screening frame 11, which would affect the screening efficiency of the screening frame 11.

[0047] Please see Figure 9 This embodiment provides a technical solution based on Embodiment 1: the top-separating mechanism 4 further includes an anti-blocking component 43. When the top rod 42 moves upward and cannot push away the spherical workpiece falling on the screening hole 111, the driving component 2 3 cooperates with the anti-blocking component 43 to repeatedly strike the bottom of the spherical workpiece, causing the anti-blocking component 43 to push the spherical workpiece away from the screening hole 111. The anti-blocking component 43 is installed at the bottom of several support plates 41 and is connected to the bearing plate 5. The anti-blocking component 43 includes a sleeve 4301, the outer... The sleeve 4301 is movably connected to the inner wall of the bearing plate 5. Both the upper and lower ends of the sleeve 4301 are provided with a locking slot to prevent it from detaching from the bearing plate 5. The surface of the sleeve 4301 is provided with a sloping groove. The sloping groove is slidably connected to the protruding nail provided on the inner wall of the bearing plate 5. When the bearing plate 5 slides along the sleeve 4301, it will also slide in the sloping groove through the protruding nail to drive the sleeve 4301 to rotate. The inner wall of the sleeve 4301 is rotatably connected to a support rod 4302. The top of the support rod 4302 is connected to several support plates 41 in the same top-splitting mechanism 4.

[0048] The bottom of the sleeve 4301 is provided with several hemispherical grooves 4303. The anti-blocking component 43 also includes a striking plate 4304, the top of which is provided with hemispheres 4305 that are adapted to the hemispherical grooves 4303. Guide rods 4306 are slidably connected to the inner walls of both ends of the striking plate 4304. The tops of the two guide rods 4306 are fixedly connected to the bottom of the bearing plate 5. A spring 4307 is fixedly connected to the top of the striking plate 4304. The other end of the spring 4307 is fixedly connected to the bottom of the bearing plate 5. The spring 4307 is normally in a stretched state and supports the top-splitting mechanism 4 by pulling the striking plate 4304.

[0049] When the push rod 42 is blocked by the spherical workpiece stuck in the screening hole 111 and cannot be pushed out directly, the support plate 5 continues to be pushed upward by the T-shaped frame 303. At this time, the rise of the support plate 5 drives the sleeve 4301 to rotate and stretches the spring 4307. When the sleeve 4301 rotates, the hemisphere 4305 moves back and forth into the hemispherical groove 4303, causing the striking plate 4304 to repeatedly collide with the bottom of the sleeve 4301 with the cooperation of the spring 4307. This transfers the kinetic energy generated by the collision to each push rod 42 and acts on the bottom of the spherical workpiece stuck in the screening hole 111, so that the ball stuck in the screening hole 111... If the spherical workpiece is loosened and the supporting plate 5 rises to the end of its stroke, but still cannot push out the spherical workpiece stuck in the screening hole 111, the motor 307 can be continuously started to rotate, so that the top separating mechanism 4 pushes the spherical workpiece stuck in the screening hole 111 multiple times, so that the pressure and friction between it and the screening hole 111 gradually decrease, and finally the spherical workpiece is pushed out from the top of the screening hole 111. This avoids the problem that some spherical workpieces slightly larger than the screening hole 111 are pushed by other materials or collided by materials falling from the discharge port, causing the spherical workpiece to get stuck in the screening hole 111 and not be easily pushed out.

[0050] Please see Figures 10-12 This embodiment provides a technical solution based on embodiment two: multiple anti-blocking components 43 are provided, each anti-blocking component 43 is connected to several push rods 42 respectively, the anti-blocking component 43 includes a push rod 4308, the middle end surface of which is slidably connected to the inner wall of the push rod 42, a cavity is provided through the push rod 42 for the upper end of the push rod 4308 to move longitudinally, the upper end of the push rod 4308 can be made of deformable material, preferably rubber, the cross-sectional area of ​​the cavity is larger than the cross-sectional area of ​​the push rod 4308, when the push rod 4308 pushes the spherical workpiece stuck in the screening hole 111 once or multiple times, the end of the rubber push rod 4308 can deform in the cavity after being squeezed by a large force, so as to avoid damaging some spherical workpieces with high surface quality, a spring 4309 is sleeved on the surface of the push rod 4308, one end of the spring 4309 abuts against the inner surface of the push rod 42, and several hemispherical grooves 4310 are provided at the bottom of the push rod 4308;

[0051] The anti-blocking component 43 also includes a sleeve 4311, the top of which is distributed with hemispherical parts 4312 that are adapted to several hemispherical grooves 4310. The outer surface of the sleeve 4311 is movably connected to the inner wall of the support plate 41. The top and bottom of the sleeve 4311 are provided with locking slots to prevent it from detaching from the support plate 41. The surface of the sleeve 4311 is provided with a slanted groove, which is slidably connected to a protruding nail provided on the inner wall of the support plate 41. A cover 4313 is fixedly connected to the top of the sleeve 4311. A cover 4314 is provided at the bottom of the push rod 42. The cover 4314 has a pushable part inside. The lower end of rod 4308 has a longitudinally movable cavity. Cover 1 4313 and cover 2 4314 abut against each other. The top of the support plate 41 is provided with a limiting baffle 4315. Cover 1 4313 and cover 2 4314 are slidably connected to the inner wall of the limiting baffle 4315. The upper end of the limiting baffle 4315 is provided with a latch to prevent cover 2 4314 from detaching from the limiting baffle 4315 after installation. Spring 3 4316 is sleeved on sleeve 2 4311. One end of spring 3 4316 abuts against cover 1 4313, and the other end of spring 3 4316 abuts against the support plate 41.

[0052] When a push rod 42 reaches a spherical workpiece that it cannot lift, the support plate 41 continues to move upward, thereby driving the sleeve 4311 to rotate. As the sleeve 4311 rotates, the hemisphere 4312 moves back and forth into the hemispherical groove 4310, causing the push rod 4308, in conjunction with the spring 4309, to repeatedly push the bottom of the spherical workpiece from the cavity, thus loosening the spherical workpiece stuck in the screening hole 111. When the support plate 5 rises to the end of its stroke, if it still cannot push out the spherical workpiece stuck in the screening hole 111... The spherical workpiece stuck in the screening hole 111 can be pushed out by continuously starting the motor 307 to rotate, so that the top separating mechanism 4 pushes it repeatedly until the spherical workpiece stuck in the screening hole 111 is pushed out, or it can be removed manually. Compared with the solution in embodiment 2, the anti-blocking component 43 is installed at the top rod 42, so that each top rod 42 can work independently. When at least one screening hole 111 is blocked, it and the top rod 42 can still continue to work, which improves the working efficiency of the top separating mechanism 4 and ensures the efficiency and effect of screening.

[0053] At least one embodiment of the present invention provides a sand casting method, comprising the following steps:

[0054] Step 101: Separate the spherical workpiece produced by lost foam casting from the molding sand;

[0055] Step 102: The spherical workpiece separated from the molding sand is fed into the aforementioned screening mechanism, and the spherical workpiece discharged from the screening frame is sent to the grinding station for grinding.

[0056] Step 103: The spherical workpiece discharged from under the screening rack is sent to the polishing station for polishing.

[0057] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

[0058] Explanation of reference numerals in the attached figures:

[0059] 1. Screening mechanism; 11. Screening frame; 111. Screening hole; 12. Notch; 13. Blocking component; 14. Discharge frame; 15. Slide chute one; 2. Drive component one; 3. Drive component two; 301. Slide frame; 302. Slide plate; 303. T-shaped frame; 304. Transverse slide chute; 305. Longitudinal slide chute; 306. Support platform; 307. Motor; 308. Drive disc one; 309. Drive disc two; 310. Triangular groove; 311. Diamond groove; 312. Support column one; 313. Support column two; 314. L-shaped rod; 315. Straight rod 4. Top-opening mechanism; 41. Support plate; 42. Top rod; 43. Anti-blocking component; 4301. Sleeve 1; 4302. Support rod; 4303. Hemispherical groove 1; 4304. Striking plate; 4305. Hemisphere 1; 4306. Guide rod; 4307. Spring 1; 4308. Push rod; 4309. Spring 2; 4310. Hemispherical groove 2; 4311. Sleeve 2; 4312. Hemisphere 2; 4313. Cover 1; 4314. Cover 2; 4315. Limiting baffle; 4316. Spring 3; 5. Bearing plate.

Claims

1. A casting processing device for mechanical parts, comprising a screening mechanism (1) and a drive component (2) for driving the screening mechanism (1) to screen spherical workpieces, characterized in that: The screening mechanism (1) includes a screening frame (11). The bottom of the screening frame (11) is provided with a driving component (3) and two top-splitting mechanisms (4) arranged in a parallel array. The two top-splitting mechanisms (4) are connected to the driving component (3) through the same bearing plate (5). The top-splitting mechanism (4) includes several support plates (41). Several top rods (42) are arranged in an array along the longitudinal direction on the top of the support plates (41). The several top rods (42) can pass through several screening holes (111) on the screening frame (11), and the top surface of the top rods (42) is provided with an inclined surface. The driving component (2) (3) The two top-splitting mechanisms (4) are driven to move back and forth in a synchronous manner, and the spherical workpiece that has not passed through the screening hole (111) and is stuck on the screening hole (111) is pushed to both sides of the screening frame (11) in a direction perpendicular to the length direction of the screening frame (11); the top-splitting mechanism (4) also includes an anti-blocking component (43). When the top rod (42) moves upward and cannot push away the spherical workpiece that has fallen on the screening hole (111), the second driving component (3) cooperates with the anti-blocking component (43) to repeatedly strike the bottom of the spherical workpiece, so that the anti-blocking component (43) can push the spherical workpiece out of the screening hole (111); The anti-blocking component (43) is installed at the bottom of several trays (41) and is connected to the support plate (5). The anti-blocking component (43) includes: a sleeve (4301), the outer surface of which is movably connected to the inner wall of the support plate (5), and a groove is provided on its surface. The groove is slidably connected to a protruding nail provided on the inner wall of the support plate (5). A support rod (4302) is rotatably connected to the inner wall of the sleeve (4301). The top of the support rod (4302) is connected to several trays (41) in the same top-splitting mechanism (4). The bottom of the sleeve (4301) is provided with a groove. A plurality of hemispherical grooves (4303) are provided, and the movement of the bearing plate (5) can drive the sleeve (4301) to rotate; a striking plate (4304) is provided, and hemispheres (4305) that are adapted to the plurality of hemispherical grooves (4303) are distributed on its top. Guide rods (4306) are slidably connected to the inner walls of both ends of the striking plate (4304). The tops of the two guide rods (4306) are fixedly connected to the bottom of the bearing plate (5). A spring (4307) is fixedly connected to the top of the striking plate (4304), and the other end of the spring (4307) is fixedly connected to the bottom of the bearing plate (5).

2. The casting processing device for mechanical parts according to claim 1, characterized in that, The number of anti-blocking components (43) is multiple, and each anti-blocking component (43) is connected to a plurality of push rods (42). Each anti-blocking component (43) includes a push rod (4308), the four sides of which slide in contact with the inner wall of the push rod (42). A cavity is provided through the push rod (42) to allow the upper end of the push rod (4308) to move longitudinally. The upper end of the push rod (4308) is made of a deformable material. The cross-sectional area of ​​the body is larger than that of the push rod (4308), and a spring (4309) is sleeved on the surface of the push rod (4308). One end of the spring (4309) abuts against the inner surface of the top rod (42). The bottom of the push rod (4308) is provided with several hemispherical grooves (4310); a sleeve (4311) has hemispherical parts (4312) on its top that are adapted to the several hemispherical grooves (4310). 11) The outer surface is movably connected to the inner wall of the support plate (41), and a second inclined groove is provided on its surface. The second inclined groove is slidably connected to the second protruding nail provided on the inner wall of the support plate (41). A cover body (4313) is fixedly connected to the top of the sleeve (4311). A cover body (4314) is provided at the bottom of the push rod (42). The cover body (4313) abuts against the cover body (4314). The cover body (4314) is provided with a push rod (43) inside. 08) The lower end of the longitudinally moving movable cavity is provided with a limiting baffle (4315) on the top of the support plate (41). The first cover (4313) and the second cover (4314) are slidably connected to the inner wall of the limiting baffle (4315). The second sleeve (4311) is fitted with a third spring (4316). One end of the third spring (4316) abuts against the first cover (4313), and the other end of the third spring (4316) abuts against the support plate (41).

3. The casting processing device for mechanical parts according to claim 1, characterized in that, The screening frame (11) is inclined. Both sides of the inclined end of the screening frame (11) are provided with notches (12). The top rod (42) that passes through the screening hole (111) adjacent to the notch (12) can push the spherical workpiece that is staying on the screening hole (111) out of the screening hole (111) and lift the spherical workpiece to a position that is level with or higher than the notch (12). The spherical workpiece can roll along the top inclined surface of the top rod (42) and flip over the notch (12) to move outside the screening frame (11). The screening holes (111) are arranged in a parallel array. The screening frame (11) is provided with a number of blocking members (13) distributed in an array.

4. The casting processing device for mechanical parts according to claim 3, characterized in that, The blocking member (13) is an arc-shaped protrusion, and the blocking member (13) is staggered between the screening holes (111) arranged in two adjacent rows and parallel to the length direction of the screening frame (11).

5. The casting processing device for mechanical parts according to claim 4, characterized in that, The blocking member (13) is elongated and is arranged along the inclined direction of the screening frame (11), and the blocking member (13) is located between two adjacent rows of screening holes (111) arranged parallel to the length direction of the screening frame (11).

6. The casting processing device for mechanical parts according to claim 1, characterized in that, The screening mechanism (1) also includes a discharge rack (14), the upper and lower ends of which are fixedly connected to the upper and lower ends of the screening rack (11) respectively, and the discharge rack (14) is provided with a plurality of sliding grooves (15), which are movably connected to the surfaces of a plurality of top rods (42).

7. The casting processing device for mechanical parts according to claim 1, characterized in that, The second driving component (3) includes a slide (301), a slide plate (302) is slidably connected to the inner side of the slide (301), a T-shaped frame (303) is slidably connected to one side of the slide plate (302), one end of the T-shaped frame (303) is fixedly connected to the bottom of the bearing plate (5), a transverse groove (304) is provided on one side of the T-shaped frame (303), and a longitudinal groove (305) is provided on one side of the slide plate (302); the second driving component (3) also includes a support platform (306), the support platform (306) is connected to the screening mechanism (1), a motor (307) is installed on the top of the support platform (306), and a drive disk (308) and a drive motor (307) are fixedly connected to one end of the output shaft of the motor (307). The second moving plate (309) has a triangular groove (310) on one side of the first driving plate (308) and a diamond groove (311) on the second driving plate (309). The support platform (306) is fixedly equipped with a first support column (312) and a second support column (313). One end of the first support column (312) is rotatably connected to an L-shaped rod (314). One end of the L-shaped rod (314) is slidably connected to the inner wall of the triangular groove (310), and the other end of the L-shaped rod (314) is slidably connected to the inner wall of the longitudinal sliding groove (305). One end of the second support column (313) is rotatably connected to a straight rod (315). One end of the straight rod (315) is slidably connected to the inner walls of the transverse sliding groove (304) and the diamond groove (311) respectively.

8. A sand casting method, characterized in that, include: The spherical workpieces produced by lost foam casting are separated from the molding sand; the spherical workpieces separated from the molding sand are fed into the casting processing device as described in any one of claims 1-7; the spherical workpieces discharged from the screen frame are fed into the grinding station for grinding; the spherical workpieces discharged from the screen frame are fed into the polishing station for polishing.

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