A sand-falling treatment device for sand casting after forming

Abstract

The present invention belongs to the technical field of metal casting, and relates to a sand-falling treatment device for sand casting after forming, including a chassis, a connecting seat, an elastic member, a base, a sand-falling frame, a filter screen and a vibration motor, two connecting seats are connected to both sides of the top of the chassis, two bases are connected to both sides of the sand-falling frame, two elastic members are connected between the base and the connecting seat, a filter screen is connected to the bottom of the sand-falling frame, a vibration motor is installed on the sand-falling frame, and also includes a placing mechanism, a driving mechanism and a clamping mechanism, a placing mechanism is provided on the sand-falling frame, a driving mechanism is provided on the sand-falling frame, and a clamping mechanism is provided on the placing mechanism. In the process of sand-falling, the present invention can press the workpiece by a pressing plate to avoid the position of the workpiece from being offset, and then perform a vibration sand-falling treatment, fix the workpiece during vibration to avoid mutual friction between the workpieces, thereby protecting the workpiece and ensuring the yield rate of the workpiece.

Description

Technical Field

[0001] The invention belongs to the technical field of metal casting and relates to a sand falling treatment device used for sand casting after forming. Background Art

[0002] Sand casting refers to a casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Sand casting is a method of producing castings using clay-bonded sand as a molding material. It is a method with a long history and is also the most widely used method. Mold sand is essential for casting.

[0003] Before sand casting, it is usually necessary to make a model out of the sand. After the sand casting is completed and the casting is taken out, a large amount of sand will adhere to the surface of the molded workpiece, and the casting needs to be sanded out before it can be used. When the existing casting sand-falling treatment equipment processes the casting, the casting is placed in the sand-falling device, and the casting is vibrated and cleaned to achieve sand-falling treatment. However, when the casting is sanded out in this way, it is easy for the castings to collide with each other, resulting in friction damage to the casting surface, affecting the casting yield rate. At the same time, the sand inside the casting is difficult to be sanded out simply by vibration, and the sand-falling effect is not good. Summary of the invention

[0004] In view of this, the present invention provides a sand falling treatment device for sand casting after forming.

[0005] The technical scheme of the present invention is: a device for sand-falling after sand casting, comprising a base frame, a connecting seat, an elastic member, a base, a sand-falling frame, a filter screen and a vibration motor, two connecting seats are connected to both sides of the top of the base frame, two bases are connected to both sides of the sand-falling frame, the sand-falling frame is located above the base frame, two elastic members are connected between the base and the connecting seat, a filter screen is connected to the bottom of the sand-falling frame, a vibration motor is installed on the sand-falling frame, and also comprises a placing mechanism, a driving mechanism and a pressing mechanism, and a placing mechanism for placing castings is provided on the sand-falling frame, and the placing mechanism comprises A main shaft, a screening frame and a baffle plate, the main shaft is rotatably connected to the middle position of the upper part of the sand falling frame, the screening frame is connected to the main shaft, the baffle plate is rotatably connected to the upper rear side of the screening frame, the sand falling frame is provided with a driving mechanism for driving the placement mechanism to flip, the placement mechanism is provided with a clamping mechanism for clamping the casting, the clamping mechanism includes an internal threaded sleeve, a screw and a pressing plate, both sides of the baffle plate are rotatably connected to the internal threaded sleeve, the internal threaded sleeve is connected to the screw by thread, the bottom of the two screws is rotatably connected to the pressing plate, and when the baffle plate cover is in the screening frame, the pressing plate is located in the screening frame.

[0006] As a preferred technical solution of the present invention, the placing mechanism also includes a lock, and the screening frame is provided with a lock for fixing the baffle plate and the screening frame. The baffle plate and the screening frame are evenly spaced with openings for discharging molding sand. The clamping mechanism includes an internal threaded sleeve, a screw and a pressure plate. Both sides of the baffle plate are rotatably connected to the right side with an internal threaded sleeve, and the internal threaded sleeve is connected to a screw through a thread. The bottom of the screw is connected to a pressure plate, and the pressure plate is slidably connected to the baffle plate. When the baffle plate cover is in the screening frame, the pressure plate is located in the screening frame.

[0007] As a preferred technical solution of the present invention, the driving mechanism includes a driving motor, a worm and a worm wheel. The driving motor is installed on the sand falling frame, the output shaft of the driving motor is connected to the worm, the main shaft is connected to the worm wheel, and the worm wheel and the worm are meshing.

[0008] As a preferred technical solution of the present invention, it also includes a crushing mechanism, which includes a reciprocating screw, a belt transmission group, a connecting sleeve and a rolling roller. The reciprocating screw is rotatably connected to the lower part of the sand falling frame, and a belt transmission group is provided between the reciprocating screw and the main shaft. The reciprocating screw is connected to a connecting sleeve through a thread, and the connecting sleeve is rotatably connected to a rolling roller. The rolling roller is located at the bottom of the sand falling frame and contacts with the filter.

[0009] As a preferred technical solution of the present invention, a shielding cover is also included. The top of the sand-falling frame is rotatably connected with the shielding cover for covering the sand-falling frame.

[0010] As a preferred technical solution of the present invention, it also includes an airflow cleaning mechanism including an air pipe, an air pump, a connecting pipe, an arc nozzle and a high-pressure nozzle. The air pipe is connected in the middle of the shielding cover, and the air pump is installed on the base frame. A connecting pipe is connected between the air outlet end of the air pump and the air pipe. The shielding cover is evenly spaced and connected with an arc nozzle, the arc nozzle is connected to the air pipe, and a plurality of high-pressure nozzles are evenly spaced and installed on the arc nozzle.

[0011] As a preferred technical solution of the present invention, it also includes a material guiding mechanism, which includes a guide frame and a material guiding plate. The bottom of the sand falling frame is connected to the guide frame, the guide frame is located below the filter screen, and both sides of the bottom of the guide frame are connected to the material guiding plates.

[0012] As a preferred technical solution of the present invention, it also includes a rubber limiting rod, and a plurality of rubber limiting rods are evenly spaced and connected to the bottom of the pressing plate.

[0013] Beneficial effects: 1. During the sand dropping process, the present invention can hold the workpiece down through the pressing plate to prevent the position of the workpiece from shifting, and then perform a vibration sand dropping process. During the vibration, the workpiece is fixed to prevent the workpieces from rubbing against each other, thereby protecting the workpiece and ensuring the yield rate of the workpiece.

[0014] 2. In the process of falling out of the sand, the present invention can drive the workpiece to turn over by rotating the screening frame, and vibrate the workpiece with the assistance of the vibration motor, so that the molding sand inside the workpiece can be poured out, thereby ensuring the effect of sand removal.

[0015] 3. In the process of rotation of the screening frame of the present invention, the reciprocating screw can be driven to rotate through the transmission of the belt drive group, thereby driving the connecting sleeve and the rolling roller to move back and forth left and right through the thread. When the rolling roller moves, it can crush the agglomerated molding sand to prevent the agglomeration of molding sand from hindering subsequent recycling and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the first structure of the placement mechanism and the driving mechanism of the present invention.

[0018] Figure 3 It is a cross-sectional view of the sand-falling frame of the present invention.

[0019] Figure 4 This is a second structural schematic diagram of the placement mechanism and the driving mechanism of the present invention.

[0020] Figure 5 It is a schematic structural diagram of the clamping mechanism, the screening frame and the baffle plate of the present invention.

[0021] Figure 6 It is a structural schematic diagram of the clamping mechanism after the screening frame and the baffle plate of the present invention are cut open.

[0022] Figure 7 It is a schematic structural diagram of the crushing mechanism of the present invention.

[0023] Figure 8 This is a schematic diagram of the first structure of the airflow cleaning mechanism of the present invention.

[0024] Fig. 9 This is a second structural schematic diagram of the airflow cleaning mechanism of the present invention.

[0025] Fig.10 It is a structural schematic diagram of the material guiding mechanism of the present invention.

[0026] Fig.11 It is a schematic structural diagram of the pressing plate and the rubber limiting rod of the present invention.

[0027] Among them: 1- chassis, 2- connecting seat, 3- elastic member, 4- base, 5- sand falling frame, 51- filter screen, 6- vibration motor, 71- spindle, 72- screening frame, 73- material baffle plate, 74- lock, 81- driving motor, 82- worm, 83- worm wheel, 91- internal thread sleeve, 92- screw, 93- pressing plate, 101- reciprocating screw, 102- belt drive group, 103- connecting sleeve, 104- rolling roller, 111- shielding cover, 112- air pipe, 113- air pump, 114- connecting pipe, 115- arc nozzle, 116- high pressure nozzle, 121- guide frame, 122- material guide plate, 13- rubber limit rod. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0029] A device for sand removal after sand casting, such as Figure 1-Figure 6 As shown, it includes a base frame 1, a connecting seat 2, an elastic member 3, a base 4, a sand-falling frame 5, a filter screen 51, a vibration motor 6, a placing mechanism, a driving mechanism and a clamping mechanism. Two connecting seats 2 are connected to the front and rear sides of the top of the base frame 1, and two bases 4 are connected to the front and rear sides of the sand-falling frame 5. The sand-falling frame 5 is located above the base frame 1, and four bases 4 are respectively located directly above the four connecting seats 2. Two elastic members 3 are connected between the base 4 and the connecting seat 2. The elastic member 3 is a strong spring. A filter screen 51 is connected to the bottom of the sand-falling frame 5. Vibration motors 6 are installed in the middle of the front and rear sides of the sand-falling frame 5. The operation of the vibration motor 6 can make the sand-falling frame 5 vibrate. A placing mechanism for placing castings is provided on the sand-falling frame 5, and a driving mechanism for driving the placing mechanism to flip is provided on the sand-falling frame 5. A clamping mechanism for clamping the castings is provided on the placing mechanism.

[0030] like Figure 2-Figure 4 As shown, the placement mechanism includes a main shaft 71, a screening frame 72, a baffle plate 73 and a lock 74. The main shaft 71 is rotatably connected to the middle position of the upper inner part of the sand falling frame 5, and the screening frame 72 is connected to the main shaft 71. The baffle plate 73 is rotatably connected to the upper rear side of the screening frame 72. A lock 74 is provided on the upper front side of the screening frame 72. When the baffle plate 73 covers the screening frame 72, the baffle plate 73 can be fixed by the lock 74, thereby fixing the baffle plate 73 and the screening frame 72. Openings for discharging molding sand are evenly spaced on the baffle plate 73 and the screening frame 72.

[0031] like Figure 2-Figure 4As shown, the driving mechanism includes a driving motor 81, a worm 82 and a worm wheel 83. The driving motor 81 is installed on the front right side of the sand falling frame 5. The worm 82 is connected to the output shaft of the driving motor 81. The worm wheel 83 is connected to the right side of the main shaft 71. The worm wheel 83 and the worm 82 are meshed, so that when the driving motor 81 is in operation, the worm wheel 83 can be driven to rotate through the worm 82 thereon, thereby driving the main shaft 71 to rotate.

[0032] like Figure 5 and Figure 6 As shown, the clamping mechanism includes an internal threaded sleeve 91, a screw 92 and a pressure plate 93. The internal threaded sleeve 91 is rotatably connected to the right side of the baffle plate 73. The screw 92 is threadedly connected to the internal threaded sleeve 91. The bottom of the screw 92 is connected to the pressure plate 93. The pressure plate 93 is slidably connected to the baffle plate 73. When the baffle plate 73 is covered in the screening frame 72, the pressure plate 93 is located in the screening frame 72 and can slide up and down in the screening frame 72.

[0033] The locking clasp 74 is then released to lock the locking clasp 73 and the locking clasp 74 is then engaged to lock the locking clasp 73. The locking clasp 74 is then engaged to lock the locking clasp 73 and the locking clasp 74 is then engaged to lock the locking clasp 73. The locking clasp 74 is then engaged to lock the locking clasp 73 and the locking clasp 74. The rotation of the main shaft 71 drives the main shaft 71 to rotate, and the rotation of the main shaft 71 drives the screening frame 72 to rotate. When the screening frame 72 rotates, the workpiece can stand on its side to dump the molding sand inside the workpiece. When the workpiece stands on its side, the molding sand inside the workpiece can be poured out more conveniently with the vibration of the workpiece, thereby assisting the workpiece in sand falling processing. The shaken-out molding sand will fall into the sand falling frame 5 and be discharged through the filter screen 51. After the processing is completed, the control driving motor 81 and the vibration motor 6 are turned off, and then the internal threaded sleeve 91 is operated to rotate in the opposite direction to drive the screw rod 92 and the pressing plate 93 to reset, and then the lock buckle 74 is released to open the baffle plate 73. In this way, the device can be used to perform sand falling processing on the formed workpiece, and when sand falling, the workpiece can be controlled to tilt, to assist in processing the molding sand inside the workpiece, and at the same time, it can also be pressed to avoid friction between the workpieces during sand falling, resulting in wear of the workpiece.

[0034] like Figure 7As shown, it also includes a crushing mechanism, which includes a reciprocating screw 101, a belt transmission group 102, a connecting sleeve 103 and a crushing roller 104. The reciprocating screw 101 is rotatably connected to the lower part of the sand falling frame 5, and a belt transmission group 102 is provided between the reciprocating screw 101 and the main shaft 71, so that the rotation of the main shaft 71 can drive the reciprocating screw 101 to rotate through the belt transmission group 102. The reciprocating screw 101 is connected to the connecting sleeve 103 through a thread, and the connecting sleeve 103 is rotatably connected to the crushing roller 104. The crushing roller 104 is located at the bottom of the sand falling frame 5 and contacts with the filter screen 51, so that the crushing roller 104 can crush the molding sand on the filter screen 51 when moving.

[0035] When the molding sand falls, it will fall on the filter 51, and some molding sand will clump and be blocked by the filter 51. When the main shaft 71 rotates, the reciprocating screw 101 can be driven to rotate through the belt drive group 102. When the reciprocating screw 101 rotates, it can drive the connecting sleeve 103 to move back and forth left and right through the thread thereon. When the connecting sleeve 103 moves back and forth left and right, it can drive the rolling roller 104 to move back and forth left and right, thereby crushing the molding sand that falls on the filter 51, so that the molding sand can pass through the filter 51. In this way, the agglomerated molding sand can be automatically crushed and crushed.

[0036] like Figure 8 As shown, a shielding cover 111 is also included. The shielding cover 111 is rotatably connected to the rear side of the top of the sand-falling frame 5. The shielding cover 111 is folded down to cover the sand-falling frame 5 to prevent the workpiece inside the sand-falling frame 5 from being discharged through the exposed part of the upper part of the sand-falling frame 5 when the sand is falling out.

[0037] like Figure 8 and Fig. 9 As shown, an airflow cleaning mechanism is also included, including an air supply pipe 112, an air pump 113, a connecting pipe 114, an arc-shaped nozzle 115 and a high-pressure nozzle 116. The air supply pipe 112 is connected in the middle of the shielding cover 111, and the air pump 113 is installed on the upper rear side of the base frame 1. The air outlet end of the air pump 113 is connected to the air supply pipe 112 through a connecting pipe 114. The shielding cover 111 is evenly spaced and connected with arc-shaped nozzles 115, and the arc-shaped nozzles 115 are connected to the air supply pipe 112. A plurality of high-pressure nozzles 116 are evenly spaced and installed on the arc-shaped nozzles 115, so that the air pump 113 can transmit gas through the connecting pipe 114, the air supply pipe 112 and the arc-shaped nozzle 115 when it is operated, and then the gas is ejected through the high-pressure nozzle 116, and the ejected gas can be sprayed on the outer surface of the molded workpiece to blow out the molding sand on the outer surface of the workpiece.

[0038] When performing the sand falling process, the shielding cover 111 can be controlled to cover the sand falling frame 5, and then the air pump 113 can be controlled to operate to inject air into the air pipe 112 through the connecting pipe 114, and the gas in the air pipe 112 can enter the arc nozzle 115, and then be sprayed out through the high-pressure nozzle 116. The gas sprayed by the high-pressure nozzle 116 can be sprayed on the workpiece inside the screening frame 72 and the baffle plate 73, to assist in blowing out the molding sand on the outer surface of the workpiece, so as to assist in the sand falling process.

[0039] like Fig.10 As shown, it also includes a material guiding mechanism, which includes a guide frame 121 and a guide plate 122. The bottom of the sand falling frame 5 is connected to the guide frame 121, and the guide frame 121 is located below the filter screen 51. The left and right sides of the bottom of the guide frame 121 are connected to the material guiding plates 122. During the process of molding sand discharge, the molding sand can be assisted in discharge through the guidance of the guide frame 121 and the guide plate 122.

[0040] like Fig.11 As shown, a rubber limiting rod 13 is also included. A plurality of rubber limiting rods 13 are evenly spaced and connected to the bottom of the pressing plate 93. When the pressing plate 93 presses the mold, the rubber limiting rod 13 can support the mold and increase the friction between the mold and the mold, thereby preventing the mold from shifting during the sand falling process.

[0041] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A device for sand-falling after sand casting, comprising a base frame (1), a connecting seat (2), an elastic member (3), a base (4), a sand-falling frame (5), a filter screen (51) and a vibration motor (6), wherein two connecting seats (2) are connected to both sides of the top of the base frame (1), two bases (4) are connected to both sides of the sand-falling frame (5), the sand-falling frame (5) is located above the base frame (1), two elastic members (3) are connected between the base (4) and the connecting seat (2), the bottom of the sand-falling frame (5) is connected to the filter screen (51), and the sand-falling frame (5) is installed with a vibration motor (6), characterized in that: The sand-falling processing device further comprises a placing mechanism, a driving mechanism and a pressing mechanism. The sand-falling frame (5) is provided with a placing mechanism for placing castings. The placing mechanism comprises a main shaft (71), a screening frame (72) and a material baffle plate (73). The main shaft (71) is rotatably connected to the middle position of the upper part of the sand-falling frame (5). The screening frame (72) is connected to the main shaft (71). The upper rear side of the screening frame (72) is rotatably connected to the material baffle plate (73). The material baffle plate (73) and the screening frame (72) are evenly spaced apart. The sand is discharged from the opening, the sand falling frame (5) is provided with a driving mechanism for driving the placement mechanism to flip, the placement mechanism is provided with a clamping mechanism for clamping the casting, the clamping mechanism comprises an internal thread sleeve (91), a screw rod (92) and a pressure plate (93), both sides of the baffle plate (73) are rotatably connected to the internal thread sleeve (91), the internal thread sleeve (91) is connected to the screw rod (92) by thread, the bottom of the two screw rods (92) is rotatably connected to the pressure plate (93), and the pressure plate (93) is slidably connected to the baffle plate (73), When the material blocking plate (73) is covered in the screening frame (72), the pressing plate (93) is located in the screening frame (72); the driving mechanism comprises a driving motor (81), a worm (82) and a worm wheel (83); the sand falling frame (5) is mounted with the driving motor (81); the output shaft of the driving motor (81) is connected to the worm (82); the main shaft (71) is connected to the worm wheel (83); the worm wheel (83) and the worm (82) are meshed; the sand falling processing device further comprises a crushing mechanism, the crushing mechanism comprises a reciprocating screw (101), a belt transmission group (102), a connecting sleeve (103) and a rolling roller (104); the lower part of the sand-falling frame (5) is rotatably connected to a reciprocating screw rod (101); a belt transmission group (102) is provided between the reciprocating screw rod (101) and the main shaft (71); the reciprocating screw rod (101) is connected to a connecting sleeve (103) via a thread; the connecting sleeve (103) is rotatably connected to a rolling roller (104); the rolling roller (104) is located at the bottom of the sand-falling frame (5) and is in contact with the filter screen (51).

2. A device for sand removal after sand casting as claimed in claim 1, characterized in that: The screening frame (72) is provided with a lock buckle (74) for fixing the material blocking plate (73) and the screening frame (72).

3. A device for sand removal after sand casting as claimed in claim 1, characterized in that: The top of the sand-falling frame (5) is rotatably connected to a shielding cover (111) for covering the sand-falling frame (5).

4. A device for sand removal after sand casting as claimed in claim 3, characterized in that: The falling sand treatment device further comprises an airflow cleaning mechanism, which comprises an air supply pipe (112), an air pump (113), a connecting pipe (114), an arc-shaped nozzle (115) and a high-pressure nozzle (116); the shielding cover (111) is connected with the air supply pipe (112) in the middle; the air pump (113) is mounted on the base frame (1); a connecting pipe (114) is connected between the air outlet end of the air pump (113) and the air supply pipe (112); the shielding cover (111) is connected with arc-shaped nozzles (115) at even intervals; the arc-shaped nozzles (115) are connected with the air supply pipe (112); and a plurality of high-pressure nozzles (116) are evenly mounted on the arc-shaped nozzle (115).

5. The device for sand removal after sand casting as claimed in claim 1, characterized in that: The falling sand processing device further comprises a material guiding mechanism, the material guiding mechanism comprising a guide frame (121) and a material guiding plate (122), the bottom of the falling sand frame (5) is connected to the guide frame (121), the guide frame (121) is located below the filter screen (51), and both sides of the bottom of the guide frame (121) are connected to the material guiding plates (122).

6. The device for sand removal after sand casting as claimed in claim 1, characterized in that: A plurality of rubber limiting rods (13) are evenly spaced and connected to the bottom of the pressing plate (93).

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