Assembly-adjustable casting sand box for sand mold casting

Abstract

The invention relates to the technical field of sand casting, in particular to an assembly-adjustable casting sand box for sand casting, which comprises a base plate, a first sand box and a second sand box, and further comprises four supporting plates, a supporting mechanism, a lifting mechanism, a preheating mechanism and a transfer mechanism, the top of the supporting plate is locked with the first sand box through a bolt; the four supporting mechanisms are fixedly connected to the four corners of the lower surface of the base plate correspondingly. The lifting mechanism is fixedly connected to the upper surface of the base plate. The horizontal adjustment of the first sand box and the second sand box is achieved, insufficient pouring is prevented, size errors and surface defects of castings are avoided, the purposes of preheating the first sand box and the second sand box are achieved, molten metal has good fluidity, molten metal pouring and exhausting are sufficient, local missing of the castings is avoided, and the auxiliary discharging function is achieved; the potential safety hazard of scalding can be eliminated, and the labor intensity of workers can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sand casting, in particular to an assembled adjustable casting sand box for sand casting. 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. Since the molding materials used in sand casting are cheap and easy to obtain, the mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings, it has long been the basic process in casting production. The sand box provides a space for making sand molds, which are compacted to form a casting cavity, a pouring port and a vent hole. The molten metal is poured in from the pouring port, and the vent hole discharges the gas. The molten metal fills the cavity, and the casting is obtained after cooling. In sand casting, two sand boxes are mainly combined and placed on the ground, and the ground is inevitably uneven. If the sand box cannot be placed horizontally, insufficient pouring is likely to occur when the molten metal is injected, and there will be errors in the size of the casting and surface defects of the casting. Moreover, when casting thinner or large castings, high requirements are placed on the fluidity of the molten metal. Due to the low temperature of the sand box, the molten metal cools quickly, the fluidity of the molten metal decreases, and there are defects such as exhaust and the inability of the molten metal to fill the cavity, which leads to partial loss of the casting. In addition, when the casting is demolded, due to the heavy weight and high temperature of the casting, manual removal of the casting is not only easy to scald the staff, but also increases the labor intensity of the staff. Therefore, it is necessary to propose a casting sand box with a leveling function. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art that the sand box cannot be leveled, the sand box cannot be preheated before casting, and it is time-consuming and labor-intensive to remove parts, the present invention provides an assembled adjustable casting sand box for sand casting.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an assembled adjustable casting sand box for sand casting, comprising a base plate, a first sand box and a second sand box, and also comprising a pallet, a supporting mechanism, a lifting mechanism, a preheating mechanism and a transfer mechanism. There are four pallets, which are fixedly connected to the upper surface of the base plate in two groups opposite to each other on the left and right sides, and the top of the pallet is locked with the first sand box by bolts; there are four supporting mechanisms, which are respectively fixedly connected to the four corners of the lower surface of the base plate; the lifting mechanism is fixedly connected to the upper surface of the base plate, and the bottom of the lifting mechanism is locked with the second sand box by bolts; the preheating mechanism is fixedly connected to the rear end of the upper surface of the base plate; there are two transfer mechanisms, which are respectively installed on the left and right sides of the lifting mechanism.

[0005] Preferably, the purpose is to adjust the length between the sleeve and the screw, change the height of the corner of the substrate, and adjust the level of the substrate. The support mechanism includes a sleeve, a screw, a lever, a universal ball, a base, a brake pad and a fastening nut. The sleeve is vertically fixedly connected to the lower surface of the substrate; the screw is screwed to the inner wall of the sleeve, and when the screw rotates clockwise or counterclockwise, the screw can enter or move out of the sleeve; the lever is horizontally inserted at the bottom of the outer wall of the screw, and the screw can be driven to rotate by the lever; the universal ball is fixedly connected to the bottom end of the screw; the base is sleeved on the outer wall of the universal ball; the number of brake pads is at least three, which are equidistantly installed on the outer edge of the bottom of the sleeve along the circumferential direction, and the outer wall of the brake pad is provided with a thread; the fastening nut is screwed to the outer wall of the brake pad; Preferably, the purpose is to adjust the height of the second sand box, and the lifting mechanism includes a bracket, a first hydraulic cylinder, a lifting plate and a top plate, the bracket is fixedly connected to the upper surface of the base plate; there are two first hydraulic cylinders, which are vertically installed at the left and right ends of the upper surface of the bracket respectively; the lifting plate is installed at the output end of the first hydraulic cylinder; there are four top plates, which are divided into two groups and fixedly connected to the lower surface of the lifting plate opposite to each other on the left and right, and the top plate and the second sand box are locked by bolts.

[0006] Preferably, the brake pad has a longitudinal cross-section in the shape of a triangle.

[0007] Preferably, the purpose is to heat the first sand box and the second sand box mold cavity to prevent the molten metal from cooling down quickly and improve the fluidity of the molten metal. The preheating mechanism includes a vertical plate, a second hydraulic cylinder, a mounting plate and a preheating assembly. The vertical plate is fixedly connected to the rear end of the upper surface of the base plate; the second hydraulic cylinder is two in number, which are respectively installed at the left and right ends of the rear side of the vertical plate in the front-to-back direction; the mounting plate is installed at the output end of the second hydraulic cylinder; the preheating assembly is two in number, which are respectively installed at the left and right ends of the front side of the mounting plate.

[0008] Preferably, the preheating assembly includes a box body, a motor, a rotating drum, a guide groove, a guide rod, a support rod, a slider, a limit bolt, an eddy current coil and a heat dissipation column, the box body is installed on the front side of the mounting plate; the motor is installed on the rear end of the upper surface of the box body; one end of the rotating drum is installed on the output end of the motor, and the other end is connected to the bottom of the box body cavity through a bearing, and guide grooves are respectively provided at the upper and lower ends of the outer wall of the rotating drum; there are two guide rods, both of which are installed on the front side of the box body cavity along the up and down directions; there are two support rods, both of which are sleeved on the outer wall of the guide rod; the slider is installed on the rear end of the support rod, and the slider is inserted into the guide groove cavity; the limit bolt is screwed on the front end of the bottom of the box body, and the movement of the support rod is limited by the limit bolt; there are two eddy current coils, which are respectively installed on the front ends of the back sides of the two support rods; the heat dissipation column is located at the center of the eddy current coil, and the heat dissipation column is connected to the support rod.

[0009] Preferably, the two guide grooves are distributed on the outer wall of the drum opposite to each other up and down, and the guide grooves are arc-shaped.

[0010] Preferably, the outer wall of the heat dissipation column is wavy in shape.

[0011] Preferably, the purpose is to be able to mechanically clamp the casting to reduce safety hazards and labor intensity. The transfer mechanism includes a support seat, a rotating plate, a fixed pulley, a third hydraulic cylinder, a wire rope and a clamping assembly. The support seat is fixedly connected to the inner wall of the bracket; the rotating plate is installed on the top of the support seat through a pin shaft; the fixed pulley is installed at the front end of the rotating plate; the third hydraulic cylinder is installed on the upper surface of the rotating plate along the front and rear directions; one end of the wire rope is installed at the output end of the third hydraulic cylinder, and the wire rope is overlapped with the fixed pulley; the clamping assembly is installed at the other end of the wire rope.

[0012] Preferably, the clamping assembly includes a base, a pull rod, a first connecting rod, a second connecting rod and a splint, and the base is U-shaped; the pull rod can be slid up and down and inserted into the center position of the top of the base, and the top of the pull rod is connected to the bottom end of the wire rope; there are two first connecting rods, which are respectively installed at the front and rear ends of the inner cavity of the base through pins; one end of the second connecting rod is connected to the inner side of the first connecting rod through a pin, and the other end is connected to the bottom end of the pull rod through a pin; the splint is installed on the outside of the first connecting rod.

[0013] Preferably, an anti-slip edge is provided on the inner side of the splint.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the screw to rotate clockwise or counterclockwise through a lever, so that the screw can gradually enter or move out of the sleeve, allowing the corner of the substrate to drop or rise, and the fastening nut is screwed to gradually move toward the brake pad. Under the action of the inclined surface, the brake pad squeezes the screw inward to position the screw, so as to achieve level adjustment of the first sand box and the second sand box, prevent insufficient pouring, and avoid dimensional errors and surface defects in castings.

[0015] 2. The present invention drives the mounting plate to move forward and backward through the second hydraulic cylinder, allowing the preheating assembly to reach between the first sand box and the second sand box. The drum rotates counterclockwise under the drive of the motor, and the two support rods move outward simultaneously along the guide rods through the cooperation of the guide groove and the slider. The heat dissipation column enters the mold cavity, and the eddy current coil generates a changing magnetic field. Eddy currents are formed in the heat dissipation column and the temperature rises, thereby heating the mold cavity, thereby achieving the purpose of preheating the first sand box and the second sand box. The molten metal has good fluidity, the molten metal is fully poured, and the exhaust is sufficient to avoid local defects in the casting.

[0016] 3. The present invention rotates the rotating plate to move the clamping assembly to the top of the casting, and the third hydraulic cylinder extends or retracts, so that the wire rope can drive the pull rod to descend or rise, and the clamping plate is moved to the side of the casting. The pull rod is pulled up by the wire rope, and the first connecting rod pulls the second connecting rod to swing upward. At the same time, the second connecting rod drives the clamping plate to move inward to clamp the casting. After the casting is clamped, it continues to rise and will be gradually taken out of the first sand box. It has the function of auxiliary material unloading, which can not only eliminate the safety hazard of scalding, but also reduce the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the supporting mechanism structure of the present invention.

[0019] Figure 3 It is a front cross-sectional view of the support mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the preheating mechanism of the present invention.

[0021] Figure 5 It is a left side cross-sectional view of the preheating assembly of the present invention.

[0022] Figure 6 It is a schematic diagram of the rotary drum structure of the present invention.

[0023] Figure 7 It is a schematic diagram of the transfer mechanism structure of the present invention.

[0024] Figure 8 It is a left side cross-sectional view of the clamping assembly of the present invention.

[0025] In the figure: 1, substrate; 2, first sand box; 3, second sand box; 4, support plate; 5, supporting mechanism; 6, lifting mechanism; 7, preheating mechanism; 8, transfer mechanism; 51, sleeve; 52, screw; 53, lever; 54, universal ball; 55, base; 56, brake pad; 57, fastening nut; 61, bracket; 62, first hydraulic cylinder; 63, lifting plate; 64, top plate; 71, vertical plate; 72, second hydraulic cylinder; 73, mounting plate; 74, preheating assembly; 741. Box body; 742. Motor; 743. Rotating drum; 744. Guide groove; 745. Guide rod; 746. Support rod; 747. Sliding block; 748. Limit bolt; 749. Eddy current coil; 7410. Heat dissipation column; 81. Support seat; 82. Rotating plate; 83. Fixed pulley; 84. Third hydraulic cylinder; 85. Steel wire rope; 86. Clamping assembly; 861. Base; 862. Pull rod; 863. First connecting rod; 864. Second connecting rod; 865. Clamp. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The present invention provides a technical solution: an adjustable casting sand box for sand casting, such as Figure 1-Figure 8 As shown, it includes a base plate 1, a first sand box 2 and a second sand box 3. Two groups of left and right opposite support plates 4 are fixedly connected to the upper surface of the base plate 1. The top of the support plate 4 is locked with the first sand box 2 by bolts. The four corners of the lower surface of the base plate 1 are fixedly connected with supporting mechanisms 5. The horizontality of the base plate 1 is adjusted by the supporting mechanism 5. The upper surface of the base plate 1 is fixedly connected with a lifting mechanism 6. The bottom of the lifting mechanism 6 is locked with the second sand box 3 by bolts. The second sand box 3 is opposite to the first sand box 2 in upper and lower directions. The rear end of the upper surface of the base plate 1 is fixedly connected with a preheating mechanism 7. The mold cavities of the first sand box 2 and the second sand box 3 are heated by the preheating mechanism 7. Transfer mechanisms 8 are fixedly connected to the left and right ends of the inner side of the lifting mechanism 6.

[0028] As a preferred embodiment, further, the supporting mechanism 5 includes a sleeve 51 vertically fixedly connected to the lower surface of the substrate 1, a screw 52 is threadedly connected to the inner wall of the sleeve 51, and a lever 53 is laterally inserted into the bottom of the screw 52. When the screw 52 is driven to rotate clockwise or counterclockwise by the lever 53, the screw 52 can enter or move out of the sleeve 51, so that the corner of the substrate 1 can be lowered or raised, a universal ball 54 is fixedly connected to the bottom end of the screw 52, ​​and a rotatable base 55 is sleeved on the outer wall of the universal ball 54. At least three brake pads 56 are circumferentially installed at the bottom of the sleeve 51, and the outer wall of the brake pad 56 is provided with a thread, and a fastening nut 57 is threadedly connected to the outer wall of the brake pad 56. The longitudinal section of the brake pad 56 is a triangle. When the fastening nut 57 is screwed to move onto the brake pad 56, the brake pad 56 is gradually moved inward by the action of the inclined surface, so that the brake pad 56 is pressed against the outer wall of the screw 52 to position the screw 52.

[0029] As a preferred solution, further, the lifting mechanism 6 includes a bracket 61 fixedly connected to the upper surface of the base plate 1, and the first hydraulic cylinder 62 is installed at both ends of the upper surface of the bracket 61. A lifting plate 63 is installed at the output end of the first hydraulic cylinder 62. Two groups of left and right opposite top plates 64 are fixedly connected to the lower surface of the lifting plate 63. The bottom of the top plate 64 is locked with the second sand box 3 by bolts. When driven by the first hydraulic cylinder 62, the second sand box 3 can be raised or lowered, and the second sand box 3 and the first sand box 2 can be molded together.

[0030] As a preferred solution, further, the preheating mechanism 7 includes a vertical plate 71 fixedly connected to the rear end of the upper surface of the base plate 1, and second hydraulic cylinders 72 are installed along the front-to-back direction at both left and right ends of the rear side of the vertical plate 71, and a mounting plate 73 is installed at the output end of the second hydraulic cylinder 72, and preheating components 74 are fixedly connected to both left and right ends of the front side of the mounting plate 73, and the preheating components 74 can be moved forward and backward under the drive of the second hydraulic cylinder 72; The preheating assembly 74 includes a box body 741 fixedly connected to the front side of the mounting plate 73, a motor 742 is installed at the rear end of the upper surface of the box body 741, one end of a rotating drum 743 is installed at the output end of the motor 742, the other end of the rotating drum 743 is installed with the bottom of the inner cavity of the box body 741 through a bearing, and two guide grooves 744 opposite to each other are opened on the outer wall of the rotating drum 743, and two guide rods 745 are vertically installed at the front end of the inner cavity of the box body 741, and two support rods 746 that can slide up and down are sleeved on the outer wall of the guide rods 745, and a slider 747 plugged into the guide groove 744 is installed at the rear end of the support rods 746, and the two guide grooves 744 are symmetrically distributed on the outer wall of the rotating drum 743, and the guide grooves 744 are inclined. When the motor 742 drives the rotating drum 743 to rotate clockwise or counterclockwise, the inclined surface of the guide groove 744 can squeeze the slider 747 to move inward or outward, so that the two support The rods 746 move inward or outward at the same time, and the front end of the lower surface of the box body 741 is vertically screwed with a limiting bolt 748, and the movement distance of the support rod 746 is limited by the up and down movement of the limiting bolt 748. Eddy current coils 749 are installed at the front end of the back of the two support rods 746, and heat dissipation columns 7410 are installed on the inner side of the eddy current coils 749, and the heat dissipation columns 7410 are installed with the support rods 746. When the eddy current coils 749 are energized, a changing magnetic field is generated, and an induced electromotive force is generated inside the heat dissipation columns 7410, and a circular current is formed in the heat dissipation columns 7410. The flow process of the eddy current generates heat, which heats up the heat dissipation columns 7410, thereby heating the mold cavities of the first sand box 2 and the second sand box 3. The outer wall of the heat dissipation column 7410 is wavy in shape, which expands the surface area of ​​the heat dissipation column 7410 and improves the heating efficiency of the heat dissipation column 7410 for the first sand box 2 and the second sand box 3.

[0031] As a preferred solution, further, the transfer mechanism 8 includes a support seat 81 fixedly connected to the inner side of the bracket 61, a rotating plate 82 is connected to the top of the support seat 81 through a pin shaft, a rotatable fixed pulley 83 is installed at the front end of the rotating plate 82, a third hydraulic cylinder 84 is installed on the upper surface of the rotating plate 82 along the front-to-back direction, one end of a steel wire rope 85 overlapped with the fixed pulley 83 is installed at the output end of the third hydraulic cylinder 84, and a clamping assembly 86 is installed at the other end of the steel wire rope 85. When the third hydraulic cylinder 84 is extended or retracted, the clamping assembly 86 can be lowered or raised under the traction of the steel wire rope 85; The clamping assembly 86 includes a base 861, and a pull rod 862 connected to the wire rope 85 is inserted at the center position of the upper surface of the base 861. The first connecting rod 863 is connected to the front and rear sides of the inner cavity of the base 861 through a pin shaft, and the inner side of the first connecting rod 863 is connected to one end of the second connecting rod 864 through a pin shaft, and the other end of the second connecting rod 864 is connected to the bottom end of the pull rod 862 through a pin shaft. A splint 865 is installed at the bottom end of the first connecting rod 863. When the pull rod 862 is pulled, the first connecting rod 863 can pull the second connecting rod 864 to swing upward, thereby moving the two splints 865 inward, so that the splints 865 can clamp the casting. The inner side of the splint 865 is provided with anti-slip edges to improve the stability of the splint 865 when clamping the casting.

[0032] Working principle: Step 1: When the substrate 1 needs to be adjusted to be level, place the level on the substrate 1, screw the fastening nut 57 to gradually move away from the brake pad 56, reduce the pressure of the brake pad 56 on the screw 52, ​​drive the screw 52 to rotate clockwise or counterclockwise through the lever 53, and gradually enter or move out of the sleeve 51 to make the corner of the substrate 1 drop or rise until the substrate 1 reaches the level. At this time, screw the fastening nut 57 to move onto the brake pad 56, and the brake pad 56 squeezes the screw 52 inward to position the screw 52 to prevent the screw 52 from rotating, so that the first sand box 2 and the second sand box 3 are level, and the metal liquid in the mold cavity of the first sand box 2 and the second sand box 3 is prevented from tilting when pouring the metal liquid; Step 2: preheating before casting. The second hydraulic cylinder 72 drives the mounting plate 73 to move forward, so that the heat dissipation column 7410 moves between the first sand box 2 and the second sand box 3. The motor 742 drives the rotating drum to rotate counterclockwise, and the guide groove 744 squeezes the slider 747 outward, so that the support rod 746 moves outward along the guide rod 745 until the two heat dissipation columns 7410 enter the first sand box 2 and the second sand box 3 mold cavity. The eddy current coil 749 is energized to generate a changing magnetic field, and an eddy current is formed in the heat dissipation column 7410. The heat dissipation column 7410 heats up, thereby heating the first sand box 2 and the second sand box 3 mold cavity to achieve the preheating purpose. The motor 742 drives the rotating drum 743 to rotate clockwise, and the guide groove 744 presses the slider 747 inward, so that the support rod 746 drives the heat dissipation column 7410 to move out of the mold cavity, and then the second hydraulic cylinder 72 is used to move the heat dissipation column 7410 away from the first sand box 2 and the second sand box 3 to prevent the second sand box 3 from being affected in descending; Step 3: The lifting plate 63 is driven down by the first hydraulic cylinder 62 to make the second sand box 3 contact with the first sand box 2, and the mold is closed. The molten metal is poured from the injection port of the second sand box 3 to achieve pouring, and the casting is obtained after gradual cooling; Step 4. Driven by the first hydraulic cylinder 62, the second sand box 3 rises to expose the casting, and the rotating plate 82 is rotated to allow the clamping assembly 86 to be directly above the casting. The third hydraulic cylinder 84 extends the casting, and the wire rope 85 drives the pull rod 862 to descend, driving the pull rod 862 to move downward. The first connecting rod 863 pulls the second connecting rod 864 to swing downward, and the distance between the two clamps 865 increases. The clamps 865 are placed on the side of the casting. At this time, the third hydraulic cylinder 84 pulls the wire rope 85 to rise, the pull rod 862 moves upward, the first connecting rod 863 pulls the second connecting rod 864 to swing upward, and the clamps 865 move inward. The clamps 865 clamp the casting and drag the casting out of the first sand box 2. The rotating plate 82 is rotated to transfer the casting and complete the unloading of the casting.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable casting sand box for sand casting, comprising a base plate (1), a first sand box (2) and a second sand box (3), characterized in that: The adjustable casting sand box for sand casting also includes: Four support plates (4) are divided into two groups and fixedly connected to the upper surface of the base plate (1) in opposite directions. The top of the support plates (4) is fastened to the first sand box (2) by bolts. Support mechanisms (5), numbering four, respectively fixedly connected to the four corners of the lower surface of the substrate (1); A lifting mechanism (6) is fixedly connected to the upper surface of the base plate (1), and the bottom of the lifting mechanism (6) is locked with the second sand box (3) by bolts; A preheating mechanism (7) fixedly connected to the rear end of the upper surface of the substrate (1); Two transfer mechanisms (8) are installed on the left and right sides of the lifting mechanism (6) respectively; The supporting mechanism (5) comprises: A sleeve (51) is vertically fixedly connected to the lower surface of the base plate (1); A screw rod (52) is screwed onto the inner wall of the sleeve (51), and when the screw rod (52) rotates clockwise or counterclockwise, the screw rod (52) can enter or move out of the sleeve (51); A shifting rod (53) is inserted transversely into the bottom of the outer wall of the screw rod (52), and the screw rod (52) is driven to rotate by the shifting rod (53); A universal ball (54) fixedly connected to the bottom end of the screw rod (52); A base (55) sleeved on the outer wall of the universal ball (54); Brake pads (56), at least three in number, mounted equidistantly along the circumferential direction on the outer edge of the bottom of the sleeve (51), and having an outer wall of the brake pads (56) provided with threads; A fastening nut (57) threadedly connected to the outer wall of the brake pad (56); The lifting mechanism (6) comprises: A bracket (61) fixedly connected to the upper surface of the substrate (1); Two first hydraulic cylinders (62) are respectively vertically mounted on the left and right ends of the upper surface of the bracket (61); A lifting plate (63) mounted on the output end of the first hydraulic cylinder (62); The top plates (64) are four in number and are fixedly connected to the lower surface of the lifting plate (63) in two groups in opposite directions, and the top plates (64) are fastened to the second sand box (3) by bolts.

2. The adjustable sand casting flask according to claim 1, characterized in that The brake pad (56) has a longitudinal cross-sectional shape of a triangle.

3. The adjustable sand casting flask according to claim 2, characterized in that , the preheating mechanism (7) comprises: A vertical plate (71) fixedly connected to the rear end of the upper surface of the base plate (1); Two second hydraulic cylinders (72) are installed at the left and right ends of the rear side of the vertical plate (71) along the front-rear direction; A mounting plate (73) mounted on the output end of the second hydraulic cylinder (72); There are two preheating components (74), which are respectively mounted on the left and right ends of the front side of the mounting plate (73).

4. The adjustable sand casting flask according to claim 3, characterized in that The preheating component (74) comprises: A box body (741) is mounted on the front side of the mounting plate (73); A motor (742) is mounted on the rear end of the upper surface of the box body (741); A rotating drum (743), one end of which is mounted on the output end of the motor (742), and the other end of which is connected to the bottom of the inner cavity of the box body (741) via a bearing. The upper and lower ends of the outer wall of the rotating drum (743) are respectively provided with guide grooves (744); Two guide rods (745) are installed on the front side of the inner cavity of the box body (741) along the up-down direction; Two support rods (746) are sleeved on the outer wall of the guide rod (745); A slider (747) is mounted on the rear end of the support rod (746), and the slider (747) is inserted into the inner cavity of the guide groove (744); A limiting bolt (748) is screwed onto the front end of the bottom of the box body (741), and the movement of the support rod (746) is limited by the limiting bolt (748); Two eddy current coils (749) are respectively mounted on the front ends of the back sides of the two support rods (746); The heat dissipation column (7410) is located at the center of the eddy current coil (749), and the heat dissipation column (7410) is connected to the support rod (746).

5. The adjustable sand casting flask according to claim 4, characterized in that The two guide grooves (744) are distributed on the outer wall of the rotating drum (743) in an upper and lower direction and opposite to each other, and the guide grooves (744) are in an arc shape.

6. The adjustable sand casting flask according to claim 5, characterized in that The outer wall of the heat dissipation column (7410) is wavy in shape.

7. The adjustable sand casting flask according to claim 6, characterized in that , the transfer mechanism (8) comprises: A support seat (81) fixedly connected to the inner wall of the bracket (61); A rotating plate (82) is mounted on the top of the support seat (81) via a pin; A fixed pulley (83) mounted on the front end of the rotating plate (82); A third hydraulic cylinder (84) is installed on the upper surface of the rotating plate (82) along the front-rear direction; A steel wire rope (85), one end of which is mounted on the output end of the third hydraulic cylinder (84), and the steel wire rope (85) is overlapped with the fixed pulley (83); A clamping assembly (86) is installed at the other end of the steel wire rope (85).

8. The adjustable sand casting flask according to claim 7, characterized in that The clamping assembly (86) comprises: A base (861) having a U-shape; A pull rod (862) is inserted at the top center position of the base (861) so as to be able to slide up and down, and the top of the pull rod (862) is connected to the bottom end of the steel wire rope (85); Two first connecting rods (863) are respectively mounted at the front and rear ends of the inner cavity of the base (861) through pins; A second connecting rod (864), one end of which is connected to the inner side of the first connecting rod (863) via a pin, and the other end of which is connected to the bottom end of the pull rod (862) via a pin; A clamping plate (865) is installed on the outside of the first connecting rod (863).

9. The adjustable sand casting flask according to claim 8, characterized in that The inner side of the clamping plate (865) is provided with an anti-slip edge.

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