Sand mold molding production line

Abstract

The invention provides a sand mold molding production line. The sand mold molding production line comprises a molding mechanism, a box overturning mechanism and a box closing mechanism, the molding mechanism comprises a first rack; a sand shooting hopper is mounted on the inner side of the top of the first rack through a translation mechanism; a sand injection part and a gas injection part are mounted at the top of the first rack; the box turning mechanism comprises a rotating ring and a driving part used for driving the rotating ring to rotate, a first conveying and carrying part is arranged on the inner side of the rotating ring, and the left end of the first conveying and carrying part is in butt joint with one end of a feeding and conveying mechanism mounted on the first rack; the box closing mechanism comprises a second rack and a box lifting part mounted on the top side of the second rack, a second conveying and carrying part is arranged on the bottom side of the second rack, and the left end of the second conveying and carrying part is in butt joint with the right end of the first conveying and carrying part; and a discharging conveying mechanism is arranged at the right end of the second conveying loading part. By forming a coherent production line, the processes of sand shooting molding, box turning and box closing are automatically carried out, the production efficiency is guaranteed, and the production line is suitable for batch production requirements.

Description

Technical Field

[0001] This invention relates to the field of sand molding, and in particular to a sand molding production line. Background Technology

[0002] In the wave of intelligent manufacturing transformation, intelligent casting islands are gradually being promoted as a new generation of casting production units. In intelligent casting islands, the external contour mold of the casting needs to be sand-shot molded, which is currently generally completed by sand molding machines.

[0003] Traditional sand molding machines require handling tools to move the upper and lower sand boxes into or out of the machine frame before and after sand injection molding. This is not conducive to mass production and automation. Furthermore, there is a lack of further processing after sand injection molding, such as the closing of the upper and lower sand boxes. The closing of the upper and lower sand boxes needs to be done manually, which makes the overall production discontinuous and affects the overall processing efficiency. Summary of the Invention

[0004] In order to solve the technical problem of the inconvenience of mass production of molds for the external contour of castings, the present invention provides a sand molding production line.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions: This invention provides a sand molding production line, comprising a molding mechanism, a box-turning mechanism, and a box-closing mechanism arranged sequentially from left to right; the molding mechanism includes a first frame; a sand-shooting hopper is mounted on the inner top of the first frame via a translation mechanism; a sand injection section and an air injection section are mounted on the top of the first frame; the translation mechanism is used to move the sand-shooting hopper below the sand injection section and the air injection section; a material inlet is provided on the top of the sand-shooting hopper, and a lifting seal is installed on the top of the material inlet; a brushing mechanism is provided on the side of the lifting seal; the air injection section includes an air outlet and a boss surrounding the air outlet, the boss being annular; a blowing cleaning section is provided between the inner side of the boss and the air outlet, and... The blowing and cleaning section is provided with an annular air outlet groove, which is flush with the bottom surface of the boss; the lifting and loading mechanism is installed on the bottom side of the first frame; the box-turning mechanism includes a rotating ring and a drive unit for driving the rotating ring to rotate, and a first conveying and loading section is provided on the inner side of the rotating ring, with the left end of the first conveying and loading section connected to one end of the feeding conveying mechanism installed on the first frame; the box-closing mechanism includes a second frame and a box-lifting section installed on the top side of the second frame, with a second conveying and loading section provided on the bottom side of the second frame, and the left end of the second conveying and loading section connected to the right end of the first conveying and loading section; the right end of the second conveying and loading section is provided with a discharge conveying mechanism.

[0006] Preferably, the translation mechanism includes a slide rail fixedly installed to the inner side of the top of the first frame, an end seat fixedly installed on the rear side of the slide rail, a fourth cylinder fixedly installed on the end seat, a movable frame fixedly installed at the output end of the fourth cylinder, a traveling wheel rotatably installed on the movable frame, and the traveling wheel slidably installed inside the slide rail; the sand-shooting bucket is fixedly installed on the movable frame.

[0007] Preferably, it further includes an air guide plate, the air outlet is opened to the middle of the air guide plate, and the boss is fixedly installed to the bottom surface of the air guide plate; the blowing cleaning part includes an annular inner cavity opened into the air guide plate, and a plurality of connecting holes arranged in an annular array are provided between the annular inner cavity and the air outlet groove; the annular inner cavity is connected to an inflation component.

[0008] Preferably, the inflation assembly includes a connecting strip; a roller is installed on the bottom rear end of the connecting strip, and multiple air cylinder sections are provided above the connecting strip. Each air cylinder section includes a mounting seat fixedly installed on the side wall of the slide rail, and a cylinder body is fixedly installed on the mounting seat. A piston is fitted inside the cylinder body, and the bottom of the piston is fixed to the top surface of the connecting strip via a stopper rod. A retaining ring is fixedly installed on the inner edge of the bottom end of the cylinder body, and a first spring is provided on the top of the piston. An outlet check valve and an inlet check valve are installed on the top end of the cylinder body. The outlet check valve is connected to an air supply pipe, which extends fixedly to the inner side of the air guide plate and communicates with the annular inner cavity.

[0009] Preferably, it further includes a wedge-shaped seat for extruding the roller, the wedge-shaped seat being fixed to the movable frame; the front side of the wedge-shaped seat is provided with a ramp surface, and the rear side of the ramp surface is in contact with the top surface of the flat plate provided on the movable frame.

[0010] Preferably, the lifting seal includes a corrugated hose; the bottom end of the corrugated hose is fixedly sleeved to the top end of the sand-shooting hopper inlet, a top ring is fixedly installed on the top end of the corrugated hose, and a sealing ring is fixedly installed on the top ring; a fifth cylinder is fixedly installed on the side wall of the sand-shooting hopper inlet, and the output shaft of the fifth cylinder is fixed to the top ring.

[0011] Preferably, the sweeping mechanism includes a sweeping brush and a flipping assembly. The flipping assembly includes a rotating shaft rotatably mounted on a movable frame. A gear is fixedly mounted at the bottom end of the rotating shaft, and the gear meshes with a rack. A connecting seat is fixedly mounted at one end of the rack, and the connecting seat is connected to an elastic movable rod.

[0012] Preferably, the elastic movable rod includes a square shaft, which is slidably sleeved with a square hole opened on the wedge-shaped seat. One end of the square shaft is fixed to the connecting seat, and both sides of the square shaft are fixed with a first end plate. The first end plate is elastically connected to a second end plate by a second spring, and the second end plate is fixedly installed on the wedge-shaped seat. A push seat is fixedly installed at the front end of the square shaft, and a stop seat is fixed at the bottom of the front end of the slide rail, and the stop seat is aligned with the push seat.

[0013] Preferably, the box-flipping mechanism further includes a base; the rotating ring is rotatably mounted on the base, and the driving unit includes a motor fixedly mounted on the base, with a drive wheel fixedly mounted on the output shaft of the motor, and the drive wheel meshing with the rotating ring.

[0014] Preferably, the lifting box section includes a first cylinder fixedly installed on the top of the second frame, a movable plate fixed to the bottom end of the output shaft of the first cylinder, a second cylinder fixed to the bottom of the movable plate, a hook fixed to the output shaft of the second cylinder, and a bent portion provided at the bottom end of the hook.

[0015] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0016] The positive and progressive effects of this invention are as follows: The aforementioned sand molding production line comprises a molding mechanism, a flipping mechanism, a closing mechanism, a feeding conveyor, a discharging conveyor, a first conveying unit, and a second conveying unit, forming a continuous production line. After the upper and lower sand boxes enter via the feeding conveyor, the sand molding, flipping, and closing processes are automatically performed. No manual handling of the upper and lower sand boxes is required between processes, ensuring overall production efficiency and suitability for mass production needs. Furthermore, the flipping mechanism flips the upper and lower sand boxes, making them more accessible to workers for inspection. Simultaneously, the closing mechanism automatically closes the upper and lower sand boxes, eliminating the need for subsequent manual closing. Even further, a lifting seal is installed at the sand-shooting hopper's inlet. After material is loaded into the sand-shooting hopper, when air injection is required, the lifting seal facilitates a sealing connection with the air injection unit. Specifically, automatic lifting presses against or separates from the boss, achieving automatic sealing or automatic release of the seal. It is equipped with a blower cleaning section and a brushing mechanism, which can automatically clean the connection between the lifting seal and the boss, so as to avoid the presence of debris when the two are pressed together, which would affect the sealing connection. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention.

[0018] Figure 2 This is a front view of the entire invention.

[0019] Figure 3 This is a schematic diagram of the molding mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the box-flipping mechanism of the present invention.

[0021] Figure 5 This is a schematic diagram of the box closing mechanism of the present invention.

[0022] Figure 6 This is a side view of the box closing mechanism of the present invention.

[0023] Figure 7 This is a schematic diagram of the translation mechanism and the side view of the translation mechanism of the present invention.

[0024] Figure 8 This is a front view of the translation mechanism and the structure above the translation mechanism of the present invention.

[0025] Figure 9 This is a schematic diagram of the inner side of the slide rail of the present invention.

[0026] Figure 10 This is a schematic diagram of the structure of the inflatable component and the wedge-shaped seat of the present invention.

[0027] Figure 11 For the present invention Figure 10 Enlarged structural diagram of section A in the middle.

[0028] Figure 12 This is a schematic diagram of the structure of the flipping component of the present invention.

[0029] Figure 13 This is a schematic diagram of the bottom structure of the air guide plate of the present invention.

[0030] Figure 14 This is a schematic diagram of the internal structure of the air guide plate of the present invention.

[0031] Figure 15 For the present invention Figure 14 Enlarged structural diagram of section B.

[0032] Figure 16 This is a schematic diagram of the lifting seal component of the present invention.

[0033] Explanation of reference numerals in the attached figures 1. Molding Mechanism; 101. First Frame; 102. Sand Shooting Hopper; 103. Sand Storage Bin; 1031. Sand Discharge Valve; 104. Air Storage Tank; 1041. Connecting Pipe; 2. Box Tilting Mechanism; 201. Base; 202. Rotating Ring; 203. Motor; 204. Drive Wheel; 205. First Fixed Strip Seat; 206. First Support Wheel; 207. Upper Strip Seat; 208. Thrust Wheel; 3. Box Closing Mechanism; 301. Second Frame; 302. First Cylinder; 303. Live... 304. Moving plate; 305. Hook; 306. Second fixed strip seat; 307. Second support wheel; 308. Groove; 309. Second cylinder; 4. Feeding conveying mechanism; 401. First carrier bar; 402. First rotating wheel; 5. Discharge conveying mechanism; 501. Second carrier bar; 502. Second rotating wheel; 6. Lifting and lowering loading mechanism; 601. Third cylinder; 602. Carrier plate; 7. Translation mechanism; 701. Slide rail; 702. End seat; 703. Fourth cylinder; 704. 705. Movable frame; 8. Traveling wheels; 9. Upper sand box; 10. Lower sand box; 11. Side strips; 12. Lifting seals; 13. Corrugated hose; 14. Top ring; 15. Sealing ring; 16. Fifth cylinder; 17. Cleaning brush; 18. Inflation assembly; 19. Rollers; 10. Connecting strips; 10. Cylinder; 11. Mounting base; 12. Outlet check valve; 13. Inlet check valve; 14. Air supply pipe; 15. Piston; 1309, First Spring; 1310, Plug Rod; 1311, Retaining Ring; 14, Wedge Seat; 15, Air Guide Plate; 1501, Air Outlet; 1502, Boss; 1503, Air Outlet Slot; 1504, Annular Inner Cavity; 1505, Connecting Hole; 16, Stop Seat; 17, Flip Assembly; 1701, Rotating Shaft; 1702, Push Seat; 1703, Square Shaft; 1704, Connecting Seat; 1705, Second Spring; 1706, Rack; 1707, Gear. Detailed Implementation

[0034] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0035] like Figures 1-16 As shown, a sand molding production line includes a molding mechanism 1, a box-flipping mechanism 2, and a box-closing mechanism 3 arranged from left to right. The molding mechanism 1 includes a first frame 101; a sand-shooting bucket 102 is mounted on the inner top of the first frame 101 via a translation mechanism 7; a sand injection section and an air injection section are mounted on the top of the first frame 101; the translation mechanism 7 is used to drive the sand-shooting bucket 102 to move below the sand injection section and the air injection section. The top of the sand-shooting hopper 102 is provided with a feed inlet, and a lifting seal 11 is installed on the top of the feed inlet; a brushing mechanism is provided on the side of the lifting seal 11. The air injection section includes an air outlet 1501 and a boss 1502 surrounding the air outlet 1501. The boss 1502 is annular. A blowing cleaning section is provided between the inner side of the boss 1502 and the air outlet 1501. The blowing cleaning section is provided with an annular air outlet groove 1503, and the air outlet groove 1503 is flush with the bottom surface of the boss 1502. Lifting and loading mechanism 6, which is installed on the bottom side of the first frame 101; The box-turning mechanism 2 includes a rotating ring 202 and a drive unit for driving the rotating ring 202 to rotate. A first conveying and loading part is provided on the inner side of the rotating ring 202. The left end of the first conveying and loading part is connected to one end of the feeding conveying mechanism 4 installed on the first frame 101. The box-closing mechanism 3 includes a second frame 301 and a box-lifting part installed on the top side of the second frame 301. A second conveying and loading part is provided on the bottom side of the second frame 301. The left end of the second conveying and loading part is connected to the right end of the first conveying and loading part. A discharge conveying mechanism 5 is provided on the right end of the second conveying and loading part.

[0036] The molding mechanism 1 is used for sand injection and curing in the cavities of the upper sand box 8 and lower sand box 9. The upper sand box 8 or lower sand box 9 is conveyed by the feeding conveying mechanism 4 and moved above the lifting loading mechanism 6. After the sand is injected into the sand injection section, the sand injection bucket 102 is moved by the translation mechanism 7 to the air outlet 1501 of the air injection section. It is then connected to the boss 1502 by the lifting sealing part 11, so that the inlet of the sand injection bucket 102 and the air outlet 1501 are sealed. After the connection, the sand injection bucket 102 is located above the upper sand box 8 or lower sand box 9. The lifting loading mechanism 6 pushes the upper sand box 8 or lower sand box 9 upward so that the top of the upper sand box 8 or lower sand box 9 is in contact with the bottom of the sand injection bucket 102. The air injection section injects high-pressure airflow into the sand injection bucket 102, so that the sand injection bucket 102 injects sand into the cavities of the upper sand box 8 and lower sand box 9 and heats the upper sand box 8 and lower sand box 9 to cure.

[0037] The flipping mechanism 2 is used to flip the upper sand box 8 or the lower sand box 9. After sand shooting molding in the upper sand box 8 or the lower sand box 9, the upper sand box 8 or the lower sand box 9 is conveyed by the feeding conveying mechanism 4 and enters the first conveying material loading section. Then, the flipping mechanism 2 drives the upper sand box 8 or the lower sand box 9 to flip, which facilitates the inspection of sand shooting molding in the cavity (flipping from horizontal to vertical so that the cavity faces the workers). After inspecting the upper sand box 8, it is flipped so that the side of the upper sand box 8 with the cavity faces down (during sand shooting molding, the side of the upper sand box 8 with the cavity faces up and is in contact with the bottom surface of the sand shooting bucket 102 to receive sand shooting treatment). The flipping of the upper sand box 8 facilitates the subsequent box closing.

[0038] The box-closing mechanism 3 is used to close the upper sand box 8 and the lower sand box 9. During closure, the upper sand box 8 is first fed into the second conveying section of the box-closing mechanism 3 via the first conveying section, and then the upper sand box 8 is lifted to a high position via the lifting section. Next, the lower sand box 9 is fed into the second conveying section via the first conveying section. At this time, the upper sand box 8 is located on top of the lower sand box 9. Finally, the lifting section lowers the upper sand box 8 to complete the closure. After closure, the upper sand box 8 and the lower sand box 9 are conveyed together to the discharge conveying mechanism 5 via the second conveying section, and then conveyed outward by the discharge conveying mechanism 5.

[0039] The aforementioned production line enables automated manufacturing of the external contour molds for castings and is applied to intelligent casting islands.

[0040] like Figure 7 and Figure 9 As shown, the translation mechanism 7 includes a slide rail 701 fixedly installed on the inner side of the top of the first frame 101. An end seat 702 is fixedly installed on the rear side of the slide rail 701. A fourth cylinder 703 is fixedly installed on the end seat 702. A movable frame 704 is fixedly installed on the output end of the fourth cylinder 703. A traveling wheel 705 is rotatably installed on the movable frame 704, and the traveling wheel 705 is slidably installed inside the slide rail 701. The sand-shooting bucket 102 is fixedly installed on the movable frame 704.

[0041] The extension and retraction of the fourth cylinder 703 drives the movable frame 704 and the sand-shooting bucket 102 to move together. During the movement, the traveling wheels 705 slide along the length direction in the slide rail 701 to provide guidance, so that the sand-shooting bucket 102 moves to the bottom of the sand injection section or the air injection section.

[0042] like Figures 1-3 as well as Figure 7 As shown, the sand injection unit includes a sand storage bin 103 fixedly installed on the top of the first frame 101, and a sand discharge valve 1031 fixedly installed at the bottom of the sand storage bin 103; the air injection unit also includes an air storage tank 104 fixedly installed on the top of the first frame 101; the air storage tank 104 is connected to the air outlet 1501 through a connecting pipe 1041, and a valve body is provided at the connection between the connecting pipe 1041 and the air storage tank 104.

[0043] As the sand-shooting hopper 102 moves below the sand injection section, the sand discharge valve 1031 opens, and the sand in the sand storage bin 103 is discharged through the sand discharge valve 1031 and enters the sand-shooting hopper 102 through the feed port at the top of the sand-shooting hopper 102. After the sand is injected into the sand-shooting hopper 102, the sand discharge valve 1031 is closed. Then, the sand-shooting hopper 102 is moved below the air injection section. After the sand-shooting hopper 102 is connected to the air injection section, the valve body is opened, and the air storage tank 104 and the external air supply equipment discharge airflow into the air outlet 1501 through the connecting pipe 1041, so that the airflow enters the sand-shooting hopper 102. The high-pressure airflow enters the sand-shooting hopper 102, so that the sand in the sand-shooting hopper 102 is shot out from the bottom.

[0044] like Figure 13 As shown, it also includes an air guide plate 15. One end of the connecting pipe 1041 is fixedly installed on the top surface of the air guide plate 15, and the port of the connecting pipe 1041 is aligned with the air outlet 1501. The air outlet 1501 is opened to the middle of the air guide plate 15, and the boss 1502 is fixedly installed on the bottom surface of the air guide plate 15. Figures 13-15 As shown, the blower cleaning section includes an annular inner cavity 1504 opened into the air guide plate 15, and a plurality of connecting holes 1505 arranged in an annular array are provided between the annular inner cavity 1504 and the air outlet groove 1503; the annular inner cavity 1504 is connected to an inflation assembly 13.

[0045] like Figures 7-11 As shown, the inflation assembly 13 includes a connecting strip 1302; a roller 1301 is installed on the rear bottom side of the connecting strip 1302; a plurality of air cylinder sections are arranged above the connecting strip 1302; each air cylinder section includes a mounting seat 1304 fixedly installed on the side wall of the slide rail 701; a cylinder body 1303 is fixedly installed on the mounting seat 1304; a piston 1308 is fitted inside the cylinder body 1303; the bottom of the piston 1308 is connected to the connecting strip 701 via a stopper rod 1310. The top surface of the connecting strip 1302 is fixed, and a retaining ring 1311 is fixedly installed on the inner edge of the bottom end of the cylinder 1303. A first spring 1309 is provided on the top of the piston 1308, and an outlet one-way valve 1305 and an inlet one-way valve 1306 are installed on the top of the cylinder 1303. The outlet one-way valve 1305 is connected to an air supply pipe 1307, which extends fixedly to the inner side of the air guide plate 15 and communicates with the annular inner cavity 1504. The air supply pipes 1307 of multiple air cylinders are evenly connected to various parts of the annular inner cavity 1504 for evenly filling the annular inner cavity 1504 with air.

[0046] like Figure 10 As shown, it also includes a wedge seat 14 for pressing roller 1301, the wedge seat 14 being fixed to the movable frame 704; the front side of the wedge seat 14 is provided with a ramp surface, and the rear side of the ramp surface is in contact with the top surface of the plate provided on the movable frame 704.

[0047] like Figures 7-10 As shown, when the sand-shooting hopper 102 is located below the sand injection section, the wedge block is located behind the roller 1301. When the sand-shooting hopper 102 moves towards the air injection section, the wedge block moves forward along with it. During this movement, the wedge block presses against the roller 1301 via its inclined surface, causing the roller 1301 to rise (the roller 1301 slides relative to each other on the inclined surface, rising uphill) until the roller 1301 is in contact with the top surface of the flat plate on the movable frame 704. At this point, the roller 1301 is raised to its highest position (in subsequent movements, the roller 1301 slides relative to each other on the top surface of the flat plate and will not be raised). During the upward movement of the roller 1301... Roller 1301 drives connecting bar 1302, stopper rod 1310 and piston 1308 to move upward together. Piston 1308 squeezes the air in cylinder 1303 and compresses first spring 1309, so that the air in cylinder 1303 is transported through air outlet one-way valve 1305 and air supply pipe 1307 into annular inner cavity 1504, and then discharged into air outlet slot 1503 through connecting hole 1505. Finally, air is blown through air outlet slot 1503 to the bottom surface of boss 1502 to clean the bottom surface of boss 1502, so that boss 1502 is kept clean and fits with lifting seal 11, thereby ensuring the sealing effect of both.

[0048] After the sand-shooting molding is completed, the sand-shooting hopper 102 moves backward to reset. During the process of the sand-shooting hopper 102 returning to the bottom of the sand injection section, the roller 1301 moves relative to the plate of the movable frame 704 to the slope surface and descends on the slope surface. Through the elastic force of the first spring 1309, the piston 1308, the stop rod 1310, the connecting bar 1302 and the roller 1301 descend to reset. The piston 1308 moves downward in the cylinder 1303, causing the cylinder 1303 to be evacuated. External air enters the cylinder 1303 through the air inlet one-way valve 1306, so that the cylinder 1303 has gas for the next air blowing cleaning. In order to ensure the cleanliness of the air blowing air, a filter structure can be installed on the air inlet one-way valve 1306.

[0049] like Figure 16 As shown, the lifting seal 11 includes a corrugated hose 1101; the bottom end of the corrugated hose 1101 is fixedly sleeved to the top end of the feed inlet of the sand-shooting hopper 102, a top ring 1102 is fixedly installed on the top end of the corrugated hose 1101, and a sealing ring 1103 is fixedly installed on the top ring 1102; a fifth cylinder 1104 is fixedly installed on the side wall of the feed inlet of the sand-shooting hopper 102, and the output shaft of the fifth cylinder 1104 is fixed to the top ring 1102.

[0050] When the sand-shooting hopper 102 is located below the sand injection section, the fifth cylinder 1104 is in a retracted state, and the top ring 1102 and the sealing ring 1103 thereon are in a low position. After the sand-shooting hopper 102 moves to below the sand injection section, the sealing ring 1103 aligns with the boss 1502. Then, the fifth cylinder 1104 drives the top ring 1102 to move upward, so that the sealing ring 1103 presses against the boss 1502 to form a sealed connection.

[0051] Furthermore, in order to ensure the sealing effect between the boss 1502 and the sealing ring 1103, a brushing mechanism is provided to brush and clean the sealing ring 1103 and the boss 1502 before they come into contact, removing dust and foreign objects from them.

[0052] like Figure 9 as well as Figure 12 As shown, the sweeping mechanism includes a sweeping brush 12 and a flipping assembly 17. The flipping assembly 17 includes a rotating shaft 1701 rotatably mounted on a movable frame 704. A gear 1707 is fixedly mounted at the bottom end of the rotating shaft 1701, and the gear 1707 is meshed with a rack 1706. A connecting seat 1704 is fixedly mounted at one end of the rack 1706, and the connecting seat 1704 is connected to an elastic movable rod.

[0053] The elastic movable rod includes a square shaft 1703, which is slidably sleeved with a square hole opened on the wedge-shaped seat 14. One end of the square shaft 1703 is fixed to the connecting seat 1704, and a first end plate is fixed on both sides of the square shaft 1703. The first end plate is elastically connected to a second end plate by a second spring 1705, and the second end plate is fixedly installed on the wedge-shaped seat 14. A push seat 1702 is fixedly installed at the front end of the square shaft 1703, and a stop seat 16 is fixed at the bottom of the front end of the slide rail 701, and the stop seat 16 is aligned with the push seat 1702.

[0054] like Figure 9 As shown, when the push seat 1702 is not compressed, the cleaning brush 12 is located in front of the lifting seal 11. When the sand-shooting bucket 102 moves towards the air injection section, the push seat 1702 moves closer to the stop seat 16 until the two are in contact. Subsequently, the sand-shooting bucket 102 continues to move forward, and the push seat 1702 is blocked by the stop seat 16, causing the push seat 1702, square shaft 1703, connecting seat 1704 and rack 1706 to move backward together. At the same time, the second spring 1705 is stretched, and the rack 1706 meshes with the gear 1707, causing the rotating shaft 1701 to drive the cleaning brush 12 to flip. The cleaning brush 12 flips and moves to the rear side of the lifting seal 11, that is, the cleaning brush 12 sweeps across the top surface of the sealing ring 1103 of the lifting seal 11, realizing automatic cleaning. After cleaning, the cleaning brush 12 is located behind the lifting seal 11 and does not obstruct the top of the lifting seal 11, thus not affecting the lifting adjustment of the lifting seal 11.

[0055] When the sand-shooting bucket 102 moves to the rear to reset, the push seat 1702 separates from the stop seat 16. Through the elastic force of the second spring 1705, the push seat 1702, square shaft 1703, connecting seat 1704 and rack 1706 reset and move together. Through the meshing transmission of rack 1706 and gear 1707, the rotating shaft 1701 rotates, and the rotating shaft 1701 drives the cleaning brush 12 to reset.

[0056] like Figure 2 As shown, the lifting and loading mechanism 6 includes a vertically arranged third cylinder 601 and a carrier plate 602 fixedly installed on the output shaft of the third cylinder 601; a heating structure is provided on the carrier plate 602. The heating structure can be an electric heating plate.

[0057] After the upper sand box 8 or lower sand box 9 is conveyed to the top of the lifting and loading mechanism 6, as Figure 2 As shown, at this time, the lifting and lowering loading mechanism 6 is in a low position. The third cylinder 601 drives the carrier plate 602 to move upward. The carrier plate 602 can lift and support the upper sand box 8 or the lower sand box 9. The upper sand box 8 or the lower sand box 9 is separated from the feeding conveying mechanism 4, so that the upper sand box 8 or the lower sand box 9 moves closer to the bottom of the sand shooting bucket 102. After sand shooting molding, the third cylinder 601 drives the carrier plate 602 to move downward until the upper sand box 8 or the lower sand box 9 is placed on the feeding conveying mechanism 4. The subsequent feeding conveying mechanism 4 can continue to transport the upper sand box 8 or the lower sand box 9.

[0058] Both the upper sand box 8 and the lower sand box 9 are equipped with side strips 10 on their front and rear sides.

[0059] The feeding conveying mechanism 4 includes two first carrier bars 401, and each of the two first carrier bars 401 is provided with a plurality of evenly distributed first rotating wheels 402 along the length direction.

[0060] The upper sand box 8 and the lower sand box 9 are placed on the first rotating wheel 402 via the side strip 10. The rotation of the first rotating wheel 402 drives the upper sand box 8 and the lower sand box 9 to move, thereby realizing the conveying.

[0061] like Figure 4As shown, the box-flipping mechanism 2 further includes a base 201; the rotating ring 202 is rotatably mounted on the base 201; the driving unit includes a motor 203 fixedly mounted on the base 201; a drive wheel 204 is fixedly mounted on the output shaft of the motor 203; and the drive wheel 204 is meshed with the rotating ring 202. The first conveying and loading unit includes two first fixed strip seats 205, which are respectively fixedly mounted on the inner front side and the inner rear side of the rotating ring 202. The first fixed strip seats 205 are provided with a plurality of evenly distributed first support wheels 206 along the length direction; an upper strip seat 207 is fixedly mounted above the first fixed strip; and the upper strip seat 207 is provided with a plurality of evenly distributed guide wheels 208 along the length direction.

[0062] The upper sand box 8 and the lower sand box 9 are conveyed by the feeding conveying mechanism 4 and enter the flipping mechanism 2, while the side strips 10 on them move between the stop wheel 208 and the first support wheel 206. Furthermore, a positioning structure can be set on the machine base 201, such as a positioning pin driven by a hydraulic cylinder or a pneumatic cylinder, and positioning holes are set on the upper sand box 8 and the lower sand box 9 so that the positioning pin can be inserted into the positioning hole to provide positioning and ensure the stability of the upper sand box 8 and the lower sand box 9 when flipping.

[0063] When the upper sand box 8 and the lower sand box 9 are flipped, the motor 203 drives the drive wheel 204 to rotate, and the drive wheel 204 drives the rotating ring 202 to rotate, causing the upper sand box 8 and the lower sand box 9 to flip.

[0064] like Figures 5-6 As shown, the lifting box section includes a first cylinder 302 fixedly installed on the top of the second frame 301. A movable plate 303 is fixed to the bottom end of the output shaft of the first cylinder 302. A second cylinder 308 is fixed to the bottom of the movable plate 303. A hook 304 is fixed to the output shaft of the second cylinder 308. A bent part is provided at the bottom end of the hook 304.

[0065] The second conveying and loading section includes two second fixed strip seats 305 fixedly installed on the second frame 301. The second fixed strip seats 305 are provided with a plurality of evenly distributed second support wheels 306 along the length direction. The second fixed strip seats 305 are provided with slots 307 for the bottom of the hooks 304 to enter and exit.

[0066] The discharge conveying mechanism 5 includes two second carrier bars 501 aligned with the second fixed carrier bar 305. Each second carrier bar 501 has a plurality of evenly distributed second rotating wheels 502 along its length. The second fixed carrier bar 305 can be fixed to the second frame 301 or supported and fixed by an external support structure.

[0067] During the process of the upper sand box 8 and the lower sand box 9 leaving the flipping mechanism 2, the positioning structure first cancels the positioning of the upper sand box 8 and the lower sand box 9, and then the upper sand box 8 and the lower sand box 9 enter the second conveying loading section through the rotation drive of the first support wheel 206 and the stop wheel 208, that is, the side strip 10 moves to the second support wheel 306.

[0068] When the boxes are closed, the upper sand box 8 first moves into the closing mechanism 3, and the second cylinder 308 is in the extended state. Then, the first cylinder 302 drives the movable plate 303 to move downward, so that the hook 304 moves to the bottom position. The height of the bent part of the hook 304 is lower than the height of the side strip 10 on the upper sand box 8. Then, the second cylinder 308 retracts, so that the bent part of the hook 304 moves directly below the side strip 10. Then, the first cylinder 302 retracts, driving the movable plate 303 to move upward, and the hook 304 lifts the upper sand box 8. Next, the lower sand box 9 enters the closing mechanism 3 and moves to the bottom of the upper sand box 8. Then, the first cylinder 302 extends, so that the upper sand box 8 and the lower sand box 9 fit together. The second support wheel 306 rotates and drives the upper sand box 8 and the lower sand box 9 to leave together and enter the second rotating wheel 502 of the discharge conveying mechanism 5. Then, through the rotation of the second rotating wheel 502, the closed upper sand box 8 and the lower sand box 9 leave the entire production line together.

[0069] The feeding conveying mechanism 4, the discharging conveying mechanism 5, the first conveying loading section, and the second conveying loading section are all equipped with driving structures, such as chain and sprocket structures. Taking the feeding conveying mechanism 4 as an example, the first rotating wheel 402 is connected to the driven sprocket and is rotatably connected to the first carrier bar 401. The driven sprocket meshes with the chain, and the chain connects to a driving sprocket and a tensioning sprocket. The driving sprocket is connected to a motor, which drives the driving sprocket to rotate, thereby driving all the first rotating wheels 402 to rotate synchronously.

[0070] The above design can be adopted in the discharge conveying mechanism 5, the first conveying loading section and the second conveying loading section, so that the second rotating wheel 502, the first support wheel 206, the stop wheel 208 and the second support wheel 306 rotate so that the upper sand box 8 and the lower sand box 9 are conveyed on the production line.

[0071] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A sand molding production line, characterized in that, It includes a shaping mechanism (1), a box-flipping mechanism (2), and a box-closing mechanism (3) arranged from left to right; The molding mechanism (1) includes a first frame (101); a sand-shooting bucket (102) is installed on the inner top of the first frame (101) via a translation mechanism (7); a sand injection section and an air injection section are installed on the top of the first frame (101); the translation mechanism (7) is used to drive the sand-shooting bucket (102) to move below the sand injection section and the air injection section; The top of the sand-shooting hopper (102) is provided with a feed inlet, and a lifting seal (11) is installed on the top of the feed inlet; a brushing mechanism is provided on the side of the lifting seal (11); The air injection section includes an air outlet (1501) and a boss (1502) surrounding the air outlet (1501). The boss (1502) is annular. A blowing cleaning section is provided between the inner side of the boss (1502) and the air outlet (1501). The blowing cleaning section is provided with an annular air outlet groove (1503), and the air outlet groove (1503) is flush with the bottom surface of the boss (1502). Lifting and loading mechanism (6), which is installed on the bottom side of the first frame (101); The box-turning mechanism (2) includes a rotating ring (202) and a drive unit for driving the rotating ring (202) to rotate. The rotating ring (202) has a first conveying and loading unit on its inner side. The left end of the first conveying and loading unit is connected to one end of the feeding conveying mechanism (4) installed on the first frame (101). The box closing mechanism (3) includes a second frame (301) and a box lifting part installed on the top side of the second frame (301). A second conveying material loading part is provided on the bottom side of the second frame (301). The left end of the second conveying material loading part is connected to the right end of the first conveying material loading part. A discharge conveying mechanism (5) is provided on the right end of the second conveying material loading part.

2. The sand molding production line as described in claim 1, characterized in that: The translation mechanism (7) includes a slide rail (701) fixedly installed on the inner side of the top of the first frame (101), an end seat (702) fixedly installed on the rear side of the slide rail (701), a fourth cylinder (703) fixedly installed on the end seat (702), a movable frame (704) fixedly installed on the output end of the fourth cylinder (703), a traveling wheel (705) rotatably installed on the movable frame (704), and the traveling wheel (705) slidably installed in the slide rail (701); the sand-shooting bucket (102) is fixedly installed on the movable frame (704).

3. The sand molding production line as described in claim 2, characterized in that: It also includes an air guide plate (15), the air outlet (1501) is opened to the middle of the air guide plate (15), and the boss (1502) is fixedly installed to the bottom surface of the air guide plate (15); the blowing cleaning part includes an annular inner cavity (1504) opened in the air guide plate (15), and a plurality of connecting holes (1505) arranged in an annular array are provided between the annular inner cavity (1504) and the air outlet groove (1503); the annular inner cavity (1504) is connected to an inflation assembly (13).

4. A sand molding production line as described in claim 3, characterized in that: The inflation assembly (13) includes a connecting strip (1302); a roller (1301) is installed on the bottom rear end of the connecting strip (1302), and a plurality of air cylinders are provided above the connecting strip (1302). Each air cylinder includes a mounting seat (1304) fixedly installed on the side wall of the slide rail (701). A cylinder body (1303) is fixedly installed on the mounting seat (1304), and a piston (1308) is fitted inside the cylinder body (1303). The bottom of the piston (1308) is connected to the connecting strip (1301) via a stopper rod (1310). The top surface of the cylinder (1302) is fixed, and a retaining ring (1311) is fixedly installed on the inner edge of the bottom end of the cylinder (1303). A first spring (1309) is provided on the top of the piston (1308). An exhaust one-way valve (1305) and an intake one-way valve (1306) are installed on the top of the cylinder (1303). The exhaust one-way valve (1305) is connected to an air supply pipe (1307). The air supply pipe (1307) is fixedly extended to the inner side of the air guide plate (15), and the air supply pipe (1307) is connected to the annular inner cavity (1504).

5. A sand molding production line as described in claim 4, characterized in that: It also includes a wedge seat (14) for pressing roller (1301), the wedge seat (14) being fixed to the movable frame (704); the front side of the wedge seat (14) is provided with a ramp surface, and the rear side of the ramp surface is in contact with the top surface of the plate provided on the movable frame (704).

6. A sand molding production line as described in claim 1, characterized in that: The lifting seal (11) includes a corrugated hose (1101); the bottom end of the corrugated hose (1101) is fixedly sleeved to the top end of the feed inlet of the sand shooting bucket (102), a top ring (1102) is fixedly installed on the top end of the corrugated hose (1101), and a sealing ring (1103) is fixedly installed on the top ring (1102). A fifth cylinder (1104) is fixedly installed on the side wall of the feed inlet of the sand shooting bucket (102), and the output shaft of the fifth cylinder (1104) is fixed to the top ring (1102).

7. A sand molding production line as described in claim 5, characterized in that: The brushing mechanism includes a cleaning brush (12) and a flipping assembly (17). The flipping assembly (17) includes a rotating shaft (1701) rotatably mounted on a movable frame (704). A gear (1707) is fixedly mounted at the bottom end of the rotating shaft (1701), and the gear (1707) meshes with a rack (1706). A connecting seat (1704) is fixedly mounted at one end of the rack (1706), and the connecting seat (1704) is connected to an elastic movable rod.

8. A sand molding production line as described in claim 7, characterized in that: The elastic movable rod includes a square shaft (1703), which is slidably sleeved with a square hole opened on the wedge seat (14). One end of the square shaft (1703) is fixed to the connecting seat (1704), and a first end plate is fixed on both sides of the square shaft (1703). The first end plate is elastically connected to a second end plate by a second spring (1705), and the second end plate is fixedly installed on the wedge seat (14). A push seat (1702) is fixedly installed at the front end of the square shaft (1703), and a stop (16) is fixed at the bottom of the front end of the slide rail (701), and the stop (16) is aligned with the push seat (1702).

9. A sand molding production line as described in claim 1, characterized in that: The box-flipping mechanism (2) also includes a base (201); the rotating ring (202) is rotatably mounted on the base (201), and the driving unit includes a motor (203) fixedly mounted on the base (201). A drive wheel (204) is fixedly mounted on the output shaft of the motor (203), and the drive wheel (204) meshes with the rotating ring (202).

10. A sand molding production line as described in claim 1, characterized in that: The lifting box section includes a first cylinder (302) fixedly installed on the top of the second frame (301). The bottom end of the output shaft of the first cylinder (302) is fixed with a movable plate (303). The bottom of the movable plate (303) is fixed with a second cylinder (308). The output shaft of the second cylinder (308) is fixed with a hook (304). The bottom end of the hook (304) is provided with a bent part.

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