Core manufacturing device for manufacturing large-volume sand core

Abstract

The invention discloses a core manufacturing device for manufacturing a large-size sand core, and relates to the technical field of sand core manufacturing. The core making device for manufacturing the large-size sand core comprises a rack, a sand shooting assembly and a core carrying assembly, the sand shooting assembly comprises a sand shooting barrel, an air injection seat, an air inlet pipe and a floating plate, the air injection seat is hollow and communicates with the sand shooting barrel, the air inlet pipe is provided with an air inlet part communicating with an air source and an air outlet part penetrating through the air injection seat, and an air outlet is formed in the tail end of the air outlet part; the floating plate is movably arranged in the air injection base, and the floating plate can cover the air outlet or be separated from the air outlet in the moving stroke of the floating plate. According to the core manufacturing device, instant impact of large-flow gas can be achieved, a large amount of sand in the sand shooting cylinder can be rapidly and smoothly shot out of the sand shooting cylinder under the instant impact of the large-flow gas, the sand shooting effect of the sand shooting cylinder is guaranteed, and therefore manufacturing of large-size sand cores can be effectively completed.

Description

Technical Field

[0001] The present application relates to the technical field of sand core manufacturing, and in particular to a core making device for manufacturing large-volume sand cores. Background Art

[0002] The core making machine is a casting equipment used to make sand cores. Sand is shot into a core box through a sand shooting tube, and then air is blown into the sand in the core box through a blowing plate to shape it and form a sand core.

[0003] The existing core making machine can smoothly complete the manufacture of small-volume sand cores. However, when manufacturing large-volume sand cores, a large amount of sand needs to be injected into the sand shooting tube, resulting in poor sand fluidity. A large amount of sand accumulates in the sand shooting tube and cannot be smoothly shot out, which greatly affects the sand shooting quality of the sand shooting tube and causes the sand core to be unable to be smoothly formed in the core box. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present application provides a core making device for manufacturing large-volume sand cores.

[0005] The core making device provided in this application adopts the following technical solution: A core making device for manufacturing large-volume sand cores comprises a frame, a sand shooting assembly is arranged on the upper part of the frame, a core carrier assembly is arranged on the lower part of the frame, the sand shooting assembly comprises a sand shooting tube, an air jet seat, an air inlet pipe and a floating plate, the air jet seat is hollow and connected to the sand shooting tube, the air inlet pipe has an air inlet portion connected to an air source, and an air outlet portion penetrating the air jet seat, the end of the air outlet portion has an air outlet, the floating plate is movably arranged in the air jet seat, and the floating plate can cover the air outlet or detach from the air outlet during its movable stroke.

[0006] By adopting the above technical scheme, the gas input by the air source can be accumulated in the air inlet pipe under the obstruction of the floating plate. After reaching a certain air pressure, the accumulated gas can push the floating plate away and instantly rush into the jet seat and the sand shooting tube. A large amount of sand in the sand shooting tube can be quickly and smoothly ejected from the sand shooting tube under the instantaneous impact of the large-flow gas, thereby ensuring the sand shooting effect of the sand shooting tube, thereby effectively completing the manufacture of large-volume sand cores.

[0007] Preferably, the jet seat is arranged upright and has an air cavity inside, the air cavity includes a first chamber and a second chamber arranged up and down, the floating plate is movably arranged in the first chamber along the vertical direction, the air outlet is located in the second chamber and the air outlet faces the first chamber.

[0008] By adopting the above technical solution, when the gas flow in the air intake pipe is small, the floating plate can cover the air outlet under the action of its own gravity, so that more gas can be gathered in the air intake pipe.

[0009] Preferably, a limit ring and a buffer pad are also provided in the jet seat, the limit ring is connected to the cavity wall of the air cavity and is located between the first cavity and the second cavity, and the buffer pad is accommodated in the first cavity and is located on the side of the floating plate away from the limit ring.

[0010] By adopting the above technical solution, the limiting ring can limit the floating plate to prevent the floating plate from directly hitting the air outlet and causing damage to the floating plate and the air inlet pipe; and the buffer pad can provide buffering protection for the floating plate to prevent the floating plate from directly hitting the jet seat under the impact of large flow gas and causing damage to the floating plate.

[0011] Preferably, a monitoring port is opened on the sand shooting tube, a monitoring frame is arranged on the side of the monitoring port, the monitoring frame is rotatably arranged, the monitoring port is located on the rotation path of the monitoring frame, a sensor and a blocking block are arranged on the monitoring frame, the sensor and the blocking block can be blocked on the monitoring port or separated from the monitoring port during the rotation stroke of the monitoring frame, and the sand shooting assembly also includes a first driving module for driving the monitoring frame to rotate.

[0012] By adopting the above technical scheme, the sensor can be blocked on the monitoring port during the rotation stroke of the monitoring frame and monitor the amount of sand in the sand shooting tube to avoid affecting the manufacture of the sand core due to too much or too little sand in the sand shooting tube; and the sealing block can be sealed on the monitoring port after the sensor is separated from the monitoring port to avoid the leakage of gas in the sand shooting tube and ensure the sand shooting effect of the sand shooting tube.

[0013] Preferably, the sand-shooting assembly also includes an outer cylinder installed on the upper end of the frame, the lower end of the outer cylinder has a mounting port, the sand-shooting cylinder can be inserted into the outer cylinder from the mounting port, the upper end of the sand-shooting cylinder is ringed with a limiting protrusion, and the upper end of the outer cylinder is provided with a plurality of locking members at circumferential intervals, each of the locking members respectively includes a locking shaft movably arranged along the radial direction of the outer cylinder, and a second driving module for driving the locking shaft to move, and the plurality of locking shafts can respectively be supported on the bottom of the limiting protrusion during their respective moving strokes.

[0014] By adopting the above technical solution, the sand-shooting tube can be loaded into the outer tube from bottom to top and can be quickly locked with the outer tube under the action of the locking member, which greatly facilitates the replacement of the sand-shooting tube.

[0015] Preferably, a support plate for supporting the sand-shooting tube is further provided at the lower end of the outer tube, and a plurality of support rods and a plurality of locking blocks are circumferentially spaced around the bottom of the support plate, the support rods extend downward in a vertical direction, and the locking blocks are connected to the frame.

[0016] By adopting the above technical solution, the sand-shooting tube can be relatively locked with the frame under the action of multiple locking blocks, and multiple support rods can support the sand-shooting tube to prevent the sand-shooting tube from being deformed due to excessive sand volume during sand shooting.

[0017] Preferably, the core carrier assembly includes a core box that can be lifted and lowered and is disposed below the sand-shooting tube, a lifting frame that is supported on the bottom of the core box and can be lifted and lowered, and a third driving module for driving the lifting frame to lift and lower. The lifting frame is provided with clamping blocks for clamping the core box on both sides of the core box, and the two clamping blocks can be relatively moved closer or farther away. The core carrier assembly also includes a fourth driving module for driving the clamping blocks to move.

[0018] By adopting the above technical solution, the core box can be stably lifted and lowered with the cooperation of the lifting frame and the two clamping blocks and can be docked with the sand shooting tube in the lifting process, thereby improving the quality and efficiency of sand core manufacturing.

[0019] Preferably, a discharging rack is provided on the lifting rack, the length direction of the discharging rack is perpendicular to the moving direction of the clamping block, the core box is arranged to be movably arranged along the length direction of the discharging rack, the core carrier assembly also includes a fifth driving module for driving the core box to move in translation, the discharging rack is provided with a top core chamber at the end of the core box in the translation direction, the top core chamber is provided with a liftable top core seat, and a sixth driving module for driving the top core seat to move up and down.

[0020] By adopting the above technical solution, the sand core in the core box can be quickly demoulded under the action of the core seat, thereby improving the demoulding efficiency of the sand core.

[0021] Preferably, the core making device also includes a blowing assembly arranged on the upper part of the frame, the blowing assembly includes a blowing seat movably arranged on the frame, and a seventh driving module for driving the blowing seat to translate, and the blowing seat can pass directly above the core box during its translation stroke.

[0022] By adopting the above technical solution, the sand core in the core box can be quickly formed under the action of the blowing component, thereby improving the manufacturing efficiency of the sand core.

[0023] Preferably, the blowing assembly also includes a translation frame which is movably arranged on the frame, and the translation frame includes two oppositely arranged frames, and the lower ends of the two frames are respectively connected to the two side portions of the blowing seat, and a clearance cavity is formed between the two frames. A sand shooting head is connected to the lower end of the sand shooting tube, and when the blowing seat is directly above the core box, the sand shooting head is accommodated in the clearance cavity.

[0024] By adopting the above technical solution, when the blowing seat moves toward the direction close to the core box, the sand shooting head can be accommodated in the make way cavity, so that the sand shooting tube no longer needs to make way and move synchronously, which not only improves the work efficiency, but also eliminates the need to adjust the position of the sand shooting tube during subsequent sand shooting, thereby ensuring the sand shooting accuracy of the sand shooting tube.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects: The gas input from the air source can be accumulated in the air inlet pipe under the obstruction of the floating plate. After reaching a certain air pressure, the accumulated gas can push the floating plate away and instantly rush into the jet seat and the sand shooting tube. A large amount of sand in the sand shooting tube can be quickly and smoothly ejected from the sand shooting tube under the instantaneous impact of the large-flow gas, thereby ensuring the sand shooting effect of the sand shooting tube, thereby effectively completing the manufacture of large-volume sand cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of the core making device in the embodiment of the present application; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 2 AA section diagram in; Figure 4 yes Figure 3 The enlarged schematic diagram of point C in FIG. Figure 5 yes Figure 2 BB cross-sectional diagram in; Figure 6 yes Figure 5 The enlarged schematic diagram of D in FIG. Figure 7 yes Figure 1 The enlarged schematic diagram of point E in FIG.

[0027] Markings in the accompanying drawings: 1. Frame; 1a. Machine; 2. Sand-shooting assembly; 2a. Sand-shooting tube; 2a1. Monitoring port; 2a2. Holding rod; 2b. Air jet seat; 2b1. Air cavity; 2b11. First chamber; 2b12. Second chamber; 2c. Air inlet pipe; 2c1. Air inlet section; 2c2. Air outlet section; 2c3. Air outlet; 2d. Floating plate; 2e. Air source; 2f. Limiting ring; 2g. Buffer pad; 2h. Monitoring frame; 2i. Sensor; 2j. Blocking block; 2k. First drive module; 2l. Outer tube; 2l1. Mounting port; 2m. Limiting protrusion; 2n. Locking piece; 2n1. Locking shaft; 2n2. Second drive module; 2o. Support plate; 2p. Support rod; 2q. Locking block; 2r. Sand-shooting head; 2s. Sand inlet hopper; 3. Core carrier assembly; 3a. Core box; 3a1. Upper box body; 3a2. Lower box body; 3a3. Pin shaft; 3a31. Shaft body; 3a32. Shaft head; 3b. Lifting frame; 3c. Third drive module; 3d. Clamping block; 3e. Fourth drive module; 3f. Discharging frame; 3g. Fifth drive module; 3h. Core top chamber; 3i. Core top seat; 3j. Sixth drive module; 4. Blowing assembly; 4a. Blowing seat; 4b. Translation frame; 5. Lifting frame; 6. Eighth drive module; 7, quick lock piece; 7a, lower lock seat; 7b, ninth drive module; 7c, upper lock seat; 7d, first lock hole; 7e, second lock hole. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-7 The present invention is described in further detail.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] See also Figure 1 As shown, a core making device for manufacturing large-volume sand cores is shown, which includes a frame 1, a platform 1a is arranged on the upper part of the frame 1, a sand shooting component 2 and a blowing component 4 are arranged on the platform 1a, and a core carrier component 3 is arranged at the lower part of the frame 1.

[0031] like Figure 3-4As shown, the sand-shooting assembly 2 includes a sand-shooting tube 2a, an air-injection seat 2b, an air-intake pipe 2c and a floating plate 2d. The sand-shooting tube 2a is vertically arranged in the machine platform 1a. The upper end of the sand-shooting tube 2a is connected to a sand-injection hopper 2s, and the lower end is connected to a sand-shooting head 2r. There are two air-injection seats 2b, which are respectively arranged on the machine platform 1a at both sides of the sand-shooting tube 2a. The two air-injection seats 2b are both hollow and are connected to the sand-shooting tube 2a through pipelines. Each air-injection seat 2b is connected to an air-intake pipe 2c. The air pipe 2c, the air inlet pipe 2c has an air inlet portion 2c1 connected to the air source 2e, and an air outlet portion 2c2 penetrating the air jet seat 2b, wherein the air source 2e is an air bag storing compressed air, and the two air inlet pipes 2c are connected to the air bag; an air outlet 2c3 is provided at the end of the air outlet portion 2c2, and a floating plate 2d is movably arranged in the air jet seat 2b, and the floating plate 2d can cover the air outlet 2c3 or detach from the air outlet 2c3 during its movable stroke.

[0032] During sand shooting, the sand is input into the sand shooting tube 2a through the sand inlet hopper 2s, and then the air bag inputs compressed air into the two air inlet pipes 2c. At this time, due to the obstruction of the floating plate 2d, the compressed air accumulates in the air inlet pipe 2c. After the accumulated gas reaches a certain air pressure, it can push the floating plate 2d away and instantly rush into the air jet seat 2b and the sand shooting tube 2a. A large amount of sand in the sand shooting tube 2a can be quickly and smoothly ejected from the sand shooting head 2r under the instantaneous impact of the large-flow gas, thereby ensuring the sand shooting effect of the sand shooting tube 2a, thereby effectively completing the manufacture of large-volume sand cores.

[0033] In this embodiment, combined with Figure 4 As shown, the jet seat 2b is arranged upright and has an air cavity 2b1 inside, the air cavity 2b1 includes a first chamber 2b11 and a second chamber 2b12 arranged up and down, the floating plate 2d is in clearance with the first chamber 2b11, and is movably arranged in the first chamber 2b11 along the vertical direction; the air outlet 2c2 is L-shaped and is located in the second chamber 2b12, the air outlet 2c2 has a horizontal section connected to the air inlet 2c1, and a vertical section with an air outlet 2c3, the air outlet 2c3 is located at the upper part of the vertical section and faces the first chamber 2b11. When the gas flow in the air inlet pipe 2c is small, the floating plate 2d can cover the air outlet 2c3 under the action of its own gravity to block the gas in the air inlet pipe 2c, so as to facilitate the collection of more gas in the air inlet pipe 2c.

[0034] In this embodiment, a limit ring 2f and a buffer pad 2g are also provided in the jet seat 2b. The limit ring 2f is connected to the cavity wall of the gas cavity 2b1 and is located between the first cavity 2b11 and the second cavity 2b12. The buffer pad 2g is accommodated in the first cavity 2b11 and is located on the upper side of the floating plate 2d. The limit ring 2f can limit the floating plate 2d to prevent the floating plate 2d from directly hitting the gas outlet 2c2 and causing damage to the floating plate 2d and the gas inlet pipe 2c; and the buffer pad 2g can provide buffer protection for the floating plate 2d to prevent the floating plate 2d from directly hitting the jet seat 2b under the impact of a large flow of gas and causing damage to the floating plate 2d.

[0035] In this embodiment, if Figure 5-6 As shown, a monitoring port 2a1 is provided at the upper end of the sand shooting tube 2a, a monitoring frame 2h is provided on the side of the monitoring port 2a1, the monitoring frame 2h is rotatable around the vertical direction, the monitoring port 2a1 is located on the rotation path of the monitoring frame 2h, a sensor 2i and a blocking block 2j are provided on the monitoring frame 2h, the sensor 2i is a material level sensor, the sensor 2i and the blocking block 2j can be blocked on the monitoring port 2a1 or separated from the monitoring port 2a1 during the rotation stroke of the monitoring frame 2h, the sand shooting assembly 2 also includes a first driving module 2k for driving the monitoring frame 2h to rotate, and the first driving module 2k is a rotary cylinder.

[0036] The monitoring frame 2h has a first position and a second position in its rotation stroke. When the monitoring frame 2h rotates to the first position, the sensor 2i can block the monitoring port 2a1 and monitor the amount of sand in the sand shooting tube 2a. If the amount of sand in the sand shooting tube 2a is too much, the gas input flow rate of the gas source 2e is increased to ensure the fluidity of the sand in the sand shooting tube 2a; if the amount of sand in the sand shooting tube 2a is too little, sand is added to the sand shooting tube 2a through the sand feeding hopper 2s, so that the sand shooting tube 2a can shoot out enough sand to facilitate the forming of the sand core; and when the monitoring frame 2h rotates to the second position, the blocking block 2j can block the monitoring port 2a1 to prevent the gas in the sand shooting tube 2a from leaking out, thereby ensuring the sand shooting effect of the sand shooting tube 2a.

[0037] In this embodiment, combined again Figure 5As shown, the sand-shooting assembly 2 also includes an outer cylinder 21 installed in the machine table 1a, and the lower end of the outer cylinder 21 has a mounting port 211, and the sand-shooting cylinder 2a can be inserted into the outer cylinder 21 from the mounting port 211, and the upper end of the sand-shooting cylinder 2a is ringed with a limiting protrusion 2m, and the upper end of the outer cylinder 21 is provided with three locking members 2n at intervals around its circumference, and each locking member 2n respectively includes a locking shaft 2n1 movably arranged along the radial direction of the outer cylinder 21, and a second driving module 2n2 for driving the locking shaft 2n1 to move, and the second driving module 2n2 is a cylinder, and the three locking shafts 2n1 can respectively be supported on the bottom of the limiting protrusion 2m in their respective moving strokes. When installing the sand shooting tube 2a, the operator can directly install the sand shooting tube 2a into the outer tube 2l from bottom to top and quickly lock it with the outer tube 2l under the action of the locking piece 2n, which greatly facilitates the replacement of the sand shooting tube 2a and is convenient for replacing sand shooting tubes 2a of different specifications according to different sand core manufacturing requirements; at the same time, for the manufacture of large-volume sand cores, a large-volume sand shooting tube 2a is required. The bottom-up installation method eliminates the need for hoisting the large-volume sand shooting tube 2a, reduces the installation difficulty, and improves the installation efficiency.

[0038] A gripping rod 2a2 for the manipulator to grasp is connected to the lower end of the sand-shooting tube 2a, and a support plate 2o for supporting the sand-shooting tube 2a is also provided at the lower end of the outer tube 21. A plurality of support rods 2p and a plurality of locking blocks 2q are provided at intervals around the bottom of the support plate 2o in the circumferential direction. The support rods 2p extend downward in the vertical direction, and the locking blocks 2q are connected to the machine table 1a. The sand-shooting tube 2a can be relatively locked with the machine table 1a under the action of the plurality of locking blocks 2q, and the plurality of support rods 2p can support the sand-shooting tube 2a to prevent the sand-shooting tube 2a from being deformed due to excessive sand during sand shooting.

[0039] In this embodiment, if Figure 3 As shown, the core carrier assembly 3 includes a core box 3a that can be lifted and lowered and is arranged below the sand-shooting tube 2a, a lifting frame 3b that is supported at the bottom of the core box 3a and can be lifted and lowered, and a third driving module 3c for driving the lifting frame 3b to lift and lower. The lifting frame 3b is provided with clamping blocks 3d for clamping the core box 3a on both sides of the core box 3a, and the two clamping blocks 3d can be relatively close to or away from each other. The core carrier assembly 3 also includes a fourth driving module 3e for driving the clamping blocks 3d to move. When sand-shooting, the two clamping blocks 3d are relatively close to each other and clamp the core box 3a, and then the lifting frame 3b drives the core box 3a to rise and dock with the sand-shooting tube 2a in a positive position, and at this time, the sand-shooting process can be carried out with high quality and efficiency.

[0040] Among them, the core box 3a is carried on the middle part of the lifting frame 3b, the two clamping blocks 3d are respectively arranged at the two ends of the lifting frame 3b, the third driving module 3c includes two cylinders arranged on the frame 1 and respectively used to lift the two ends of the lifting frame 3b, and the fourth driving module 3e includes two translation cylinders respectively arranged at the two ends of the lifting frame 3b, and the two translation cylinders are respectively used to drive the two clamping blocks 3d to translate.

[0041] In this embodiment, the core box 3a includes an upper box body 3a1 and a lower box body 3a2, the lower box body 3a2 is installed on the lifting frame 3b, and the upper box body 3a1 covers the lower box body 3a2. Two lifting frames 5 for lifting the upper box body 3a1 and two eighth drive modules 6 for driving the two lifting frames 5 to lift are also provided at the bottom of the machine 1a. The eighth drive module 6 is a cylinder. The two lifting frames 5 are respectively located on both sides of the upper box body 3a1. Two quick locks 7 are respectively provided on each lifting frame 5. Two pins 3a3 corresponding to the two quick locks 7 are respectively provided on both sides of the upper box body 3a1. After the sand core is formed, the lifting frame 5 is connected to the upper box body 3a1 through the quick locking of the quick lock 7 and the pin 3a3. The lifting frame 5 drives the upper box body 3a1 to rise, and then the lower box body 3a2 can carry the formed sand core to unload.

[0042] Combination Figure 7 As shown, the quick lock member 7 includes a lower lock seat 7a that is movable along the horizontal direction, a ninth driving module 7b for driving the lower lock seat 7a to move, and an upper lock seat 7c arranged on the lower lock seat 7a. The ninth driving module 7b is a double-headed cylinder. The two lower lock seats 7a are respectively connected to the two ends of the double-headed cylinder. The double-headed cylinder can drive the two lower lock seats 7a to be relatively close or away from each other. The top surface of the lower lock seat 7a and the bottom surface of the upper lock seat 7c are both inclined surfaces and the two are in contact with each other. The top surface of the lower lock seat 7a and the top surface of the upper lock seat 7c are respectively moved in the direction from the lower lock seat 7a to the ninth driving module 7b. The upper lock seat 7c and the lower lock seat 7a are both provided with a first lock hole 7d and a second lock hole 7e which pass through the upper and lower parts. The first lock hole 7d and the second lock hole 7e are connected to each other and are arranged in the direction from the lower lock seat 7a to the ninth driving module 7b. The aperture of the first lock hole 7d is smaller than the aperture of the second lock hole 7e. The pin shaft 3a3 has a shaft body 3a31 and a shaft head 3a32 arranged at the upper end of the shaft body 3a31. The diameter of the shaft body 3a31 is smaller than the aperture of the first lock hole 7d. The diameter of the shaft head 3a32 is larger than the aperture of the first lock hole 7d and smaller than the aperture of the second lock hole 7e.

[0043] When it is necessary to lift the upper box body 3a1, the lifting frame 5 approaches the upper box body 3a1, and the pin shaft 3a3 passes through the first locking holes 7d on the lower lock seat 7a and the upper lock seat 7c from bottom to top in turn, and then the two piston rods of the double-headed cylinder contract, driving the two lower lock seats 7a to be relatively close, and the two upper lock seats 7c are gradually lifted upward along the top surface of the lower lock seat 7a, and the shaft head 3a32 is lifted, and the shaft body 3a31 is stuck in the second locking hole 7e on the lower lock seat 7a during the movement of the lower lock seat 7a, thereby realizing the relative locking between the pin shaft 3a3 and the quick lock member 7.

[0044] In this embodiment, combined with Figure 1 and Figure 5 As shown, the lifting frame 3b is also provided with a discharge frame 3f, the length direction of the discharge frame 3f is perpendicular to the moving direction of the clamping block 3d, the core box 3a is arranged to be translatable along the length direction of the discharge frame 3f, the core carrier assembly 3 also includes a fifth driving module 3g for driving the core box 3a to translate, the fifth driving module 3g is a cylinder, the discharge frame 3f is provided with a core ejection chamber 3h at the end of the translation direction of the core box 3a, the core ejection chamber 3h is provided with a liftable core ejection seat 3i and a sixth driving module 3j for driving the core ejection seat 3i to move up and down. After the lifting frame 5 lifts the upper box body 3a1, the lower box body 3a2 loaded with the sand core moves along the length direction of the discharge frame 3f to the top of the core ejection seat 3i, and then the core ejection seat 3i rises and ejects the sand core in the lower box body 3a2, so as to realize the rapid demoulding of the sand core.

[0045] In this embodiment, the core making device also includes a blowing assembly 4 arranged at the bottom of the machine table 1a and located on the side of the sand-shooting tube 2a. The blowing assembly 4 includes a blowing seat 4a arranged on the frame 1 and can be translated, and a seventh driving module (not shown in the figure) for driving the blowing seat 4a to translate. The blowing seat 4a has an air pipe, which can be docked with the material port on the core box 3a. The seventh driving module is a cylinder, and the blowing seat 4a can pass directly above the core box 3a during its translation stroke. After the sand-shooting is completed, the core box 3a descends, and the blowing seat 4a moves to the top of the core box 3a. Then the core box 3a rises and docks with the blowing seat 4a. The sand core in the core box 3a can be quickly formed under the blowing action of the blowing seat 4a, thereby improving the manufacturing efficiency of the sand core.

[0046] In this embodiment, two slide rails are arranged at the bottom of the machine table 1a, and the blowing assembly 4 also includes a translation frame 4b which is arranged on the machine table 1a and can be translated. The translation frame 4b includes two relatively arranged frames, and the lower ends of the two frames are respectively connected to the two side parts of the blowing seat 4a, and the upper ends are slidably connected to the two slide rails through pulleys. A clearance cavity (not shown in the figure) is formed between the two frames. When the blowing seat 4a is directly above the core box 3a, the sand shooting head 2r is accommodated in the clearance cavity.

[0047] In this way, when the blowing seat 4a moves toward the direction close to the core box 3a, the sand shooting head 2r can be accommodated in the make way cavity, so that the sand shooting tube 2a no longer needs to make way and move synchronously, which not only improves the work efficiency, but also eliminates the need to adjust the position of the sand shooting tube 2a during subsequent sand shooting, thereby ensuring the sand shooting accuracy of the sand shooting tube 2a.

[0048] The implementation principle of the core making device in the embodiment of the present application is: The core box 3a rises and docks with the sand-shooting head 2r, and the sand is fed into the sand-shooting tube 2a through the sand-feeding hopper 2s; The air bag inputs compressed air to the two air inlet pipes 2c, and the floating plate 2d blocks the compressed air and makes the compressed air accumulate in the air inlet pipe 2c. When the accumulated gas reaches a certain pressure, the gas pushes the floating plate 2d away and instantly rushes into the air jet seat 2b and the sand shooting tube 2a. A large amount of sand in the sand shooting tube 2a is quickly shot from the sand shooting head 2r into the core box 3a under the instantaneous impact of the large flow of gas. The core box 3a descends, and the blowing seat 4a moves to the top of the core box 3a and docks with the core box 3a. Then, the blowing seat 4a blows air to the sand core in the core box 3a to form the sand core. The blowing seat 4a is reset, the lifting frame 5 quickly locks the upper box body 3a1 and drives the upper box body 3a1 to rise, and the lower box body 3a2 loaded with the sand core moves along the length direction of the discharge frame 3f to the top of the top core seat 3i, and then the top core seat 3i rises and pushes out the sand core in the lower box body 3a2.

[0049] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A core making device for manufacturing large-volume sand cores, comprising a frame (1), a sand shooting assembly (2) being arranged on the upper part of the frame (1), and a core carrying assembly (3) being arranged on the lower part of the frame (1), characterized in that: The sand-shooting assembly (2) comprises a sand-shooting tube (2a), an air jet seat (2b), an air inlet pipe (2c) and a floating plate (2d); the air jet seat (2b) is hollow and communicated with the sand-shooting tube (2a); the air inlet pipe (2c) comprises an air inlet portion (2c1) communicated with an air source (2e) and an air outlet portion (2c2) penetrating the air jet seat (2b); the end of the air outlet portion (2c2) comprises an air outlet (2c3); the floating plate (2d) is movably arranged in the air jet seat (2b); the floating plate (2d) can cover the air outlet (2c3) or be detached from the air outlet (2c3) during its movable stroke.

2. The core making device for manufacturing large-volume sand cores according to claim 1, characterized in that: The jet seat (2b) is arranged upright and has an air cavity (2b1) inside, the air cavity (2b1) includes a first chamber (2b11) and a second chamber (2b12) arranged up and down, the floating plate (2d) is movably arranged in the first chamber (2b11) along the vertical direction, the air outlet (2c2) is located in the second chamber (2b12) and the air outlet (2c3) faces the first chamber (2b11).

3. The core making device for manufacturing large-volume sand cores according to claim 2, characterized in that: A limit ring (2f) and a buffer pad (2g) are also provided in the jet seat (2b); the limit ring (2f) is connected to the cavity wall of the air cavity (2b1) and is located between the first cavity (2b11) and the second cavity (2b12); the buffer pad (2g) is accommodated in the first cavity (2b11) and is located on a side of the floating plate (2d) away from the limit ring (2f).

4. The core making device for manufacturing a large volume sand core according to any one of claims 1 to 3, characterized in that: The sand-shooting tube (2a) is provided with a monitoring port (2a1), a monitoring frame (2h) is arranged on the side of the monitoring port (2a1), the monitoring frame (2h) is rotatably arranged, the monitoring port (2a1) is located on the rotation path of the monitoring frame (2h), the monitoring frame (2h) is provided with a sensor (2i) and a blocking block (2j), the sensor (2i) and the blocking block (2j) can be blocked on the monitoring port (2a1) or separated from the monitoring port (2a1) during the rotation stroke of the monitoring frame (2h), and the sand-shooting assembly (2) also includes a first driving module (2k) for driving the monitoring frame (2h) to rotate.

5. The core making device for manufacturing large-volume sand cores according to any one of claims 1 to 3, characterized in that: The sand-shooting assembly (2) further comprises an outer cylinder (2l) mounted on the upper end of the frame (1), the lower end of the outer cylinder (2l) having an installation opening (2l1), the sand-shooting cylinder (2a) being capable of being inserted into the outer cylinder (2l) from the installation opening (2l1), the upper end of the sand-shooting cylinder (2a) being provided with a limiting protrusion (2m) around its upper end, the upper end of the outer cylinder (2l) being provided with a plurality of locking members (2n) spaced around its circumference, each of the locking members (2n) comprising a locking shaft (2n1) movably arranged along the radial direction of the outer cylinder (2l), and a second driving module (2n2) for driving the locking shaft (2n1) to move, and the plurality of locking shafts (2n1) being capable of being supported on the bottom of the limiting protrusion (2m) during their respective moving strokes.

6. The core making device for manufacturing large-volume sand cores according to claim 5, characterized in that: The lower end of the outer cylinder (21) is also provided with a support plate (2o) for supporting the sand-shooting cylinder (2a); a plurality of support rods (2p) and a plurality of locking blocks (2q) are arranged at intervals around the bottom of the support plate (2o); the support rods (2p) extend downward in a vertical direction; and the locking blocks (2q) are connected to the frame (1).

7. The core making device for manufacturing large-volume sand cores according to any one of claims 1 to 3, characterized in that: The core carrier assembly (3) comprises a core box (3a) which is liftable and arranged below the sand-shooting tube (2a), a lifting frame (3b) which is supported at the bottom of the core box (3a) and is liftable and arranged, and a third driving module (3c) for driving the lifting frame (3b) to move up and down. The lifting frame (3b) is provided with clamping blocks (3d) for clamping the core box (3a) on both sides of the core box (3a), and the two clamping blocks (3d) can be relatively moved closer or farther away. The core carrier assembly (3) also comprises a fourth driving module (3e) for driving the clamping blocks (3d) to move.

8. The core making device for manufacturing large-volume sand cores according to claim 7, characterized in that: The lifting frame (3b) is provided with a discharge frame (3f), the length direction of the discharge frame (3f) is perpendicular to the moving direction of the clamping block (3d), the core box (3a) is arranged to be movably arranged along the length direction of the discharge frame (3f), the core carrier assembly (3) also includes a fifth driving module (3g) for driving the core box (3a) to move in translation, the discharge frame (3f) is provided with a top core chamber (3h) at the end of the core box (3a) in the translation direction, and a liftable top core seat (3i) and a sixth driving module (3j) for driving the top core seat (3i) to move up and down are arranged in the top core chamber (3h).

9. The core making device for manufacturing a large volume sand core according to any one of claims 1 to 3, characterized in that: The core making device further comprises a blowing assembly (4) arranged on the upper part of the frame (1), the blowing assembly (4) comprising a blowing seat (4a) arranged on the frame (1) and capable of translation, and a seventh driving module for driving the blowing seat (4a) to translate, and the blowing seat (4a) can pass directly above the core box (3a) during its translation stroke.

10. The core making device for manufacturing large-volume sand cores according to claim 9, characterized in that: The blowing assembly (4) further comprises a translation frame (4b) which is translationally movably arranged on the frame (1), the translation frame (4b) comprising two frame bodies which are arranged opposite to each other, the lower ends of the two frame bodies are respectively connected to the two side parts of the blowing seat (4a), a clearance cavity is formed between the two frame bodies, the lower end of the sand shooting tube (2a) is connected to a sand shooting head (2r), and when the blowing seat (4a) is located directly above the core box (3a), the sand shooting head (2r) is accommodated in the clearance cavity.

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