Molding sand screening device for casting mold

Abstract

The utility model relates to the technical field of casting, and discloses a molding sand screening device for a casting mold, which comprises a base, a rear connecting plate, a screening component and a rotating component. According to the molding sand screening device for the casting mold, the screening box can be driven to move up and down through stretching and retracting of the hydraulic telescopic column in combination with the structure of the connecting plate and the connecting column, automatic screening of materials is achieved, the burden of manual operation is greatly relieved, and after screening is completed, when coarse particles in the screening box need to be cleared away, the screening effect is good. Firstly, a fixing rotary knob and a cover plate are detached, sealing of the screening box is relieved, then a motor is started, a rotating rod is driven to rotate, two connecting columns can be far away from each other, clamping of the screening box is relieved, and at the moment, the screening box cannot fall off under supporting of inserting columns on the two sides, but can naturally turn over; coarse particles in the screening box can be smoothly poured to the Z-shaped discharging opening in the bottom of the base, and rapid cleaning and discharging are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a molding sand screening device for a casting mold. Background Art

[0002] The molding sand screening device for casting molds is an important equipment for screening molding sand for casting molds, and it plays a vital role in the foundry industry. In the existing production environment, the screening of molding sand often relies on manual operation by workers, which not only increases the labor intensity of workers, but also reduces work efficiency. At the same time, due to the instability of manual operation, the accuracy and consistency of the screening results are difficult to guarantee.

[0003] Most of the existing molding sand screening devices are fixed structures. Although they can meet basic screening needs, they have many disadvantages in actual use. First, after the screening is completed, the fixed structure screening device often requires workers to manually disassemble the screening box to pour out the coarse particles, which not only increases the difficulty of the workers' operation, but also affects the continuity of the screening work. Secondly, since the screening box is difficult to disassemble, the cleaning of coarse particles is often time-consuming and laborious, which seriously affects the production efficiency. Therefore, a molding sand screening device for casting molds is proposed to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a molding sand screening device for casting molds, which has the advantages of simple operation and convenient pouring out of the screened material, and solves the problem that traditional screening relies on manual or partial screening machines and is inconvenient to pour out the screened residues.

[0006] (II) Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A molding sand screening device for a casting mold comprises a base, a rear connecting plate, a screening assembly and a rotating assembly, wherein the rear connecting plate is welded to the rear side of the base and has an inverted L-shape, the inner top of the rear connecting plate and the inside of the base are provided with the screening assembly, and the rotating assembly is provided inside the screening assembly;

[0009] The screening assembly comprises a hydraulic telescopic column, a connecting plate, a connecting column and a screening box, wherein the hydraulic telescopic column is inverted and fixed with the top bolts on the inner side of the rear connecting plate, the top of the connecting plate is fixed with the bottom bolts of the hydraulic telescopic column, the bottom of the connecting plate is clamped with the top ends of the two connecting columns, and the other ends of the two connecting columns jointly clamp the screening box;

[0010] The rotating assembly includes a rotating rod and a motor. A threaded section is provided on the outside of the rotating rod and is threadedly connected to two connecting columns near the top. Both ends of the rotating rod are rotatably connected to both sides of the connecting plate through bearings and one end thereof passes through the connecting plate and is bolted to the output end of the motor. A support plate is bolted to the bottom of the motor, and the support plate is welded to the outer side of the connecting plate.

[0011] As a preferred technical solution of the utility model, a Z-shaped discharge port is arranged inside the base, and a cover plate is also inserted on the top of the screening box.

[0012] As a preferred technical solution of the utility model, the connecting plate is an inverted U-shape and has two groups of symmetrically distributed sliding grooves on the top of its inner wall. The connecting column is composed of a sliding block, an L-shaped column and a clamping block in sequence. Two sliding feet are provided on the top of the sliding block and are slidably connected to the sliding grooves of the connecting plate through the sliding feet.

[0013] As a preferred technical solution of the utility model, a thread groove is opened in the middle of the sliding block, the number of thread segments on the outside of the rotating rod is two, and the thread directions are opposite and symmetrically distributed, and the two thread segments are respectively threadedly connected to the thread grooves of the two sliding blocks.

[0014] As a preferred technical solution of the utility model, the L-shaped column and the clamp block are jointly provided with a plug-in through hole, a filter is arranged at the bottom of the top opening of the screening box and plug-in columns are welded on both sides thereof, the plug-in columns on both sides are respectively plugged into the plug-in through holes of the two connecting columns and the ends after plugging are provided with widening.

[0015] As a preferred technical solution of the utility model, a plug-in slot is further provided in the middle of the front and rear sides of the screening box, and plug-in blocks are welded correspondingly to the front and rear sides of the cover plate. After the plug-in blocks are plugged into the plug-in slots, they are threadedly connected to a fixing knob.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a molding sand screening device for a casting mold, which has the following beneficial effects:

[0018] The molding sand screening device for casting molds can drive the screening box to move up and down through the extension and retraction of the hydraulic telescopic column, combined with the structure of the connecting plate and the connecting column, to realize automatic screening of materials, greatly reducing the burden of manual operation, and the filter screen inside the screening box can effectively separate fine particles, and the fine particles will directly fall to the Z-shaped discharge port of the base, so as to be quickly discharged. When the screening is completed, when it is necessary to clean the coarse particles in the screening box, first, the sealing of the screening box is released by removing the fixing knob and the cover plate, and then the motor is started to drive the rotating rod to rotate. Since two sections of threads in opposite directions are provided on the rotating rod, and they are respectively threadedly connected with the thread grooves inside the two connecting columns, as the rotating rod 6 rotates, the two connecting columns will move away from each other, thereby releasing the clamping of the screening box. At this time, the screening box will not fall under the support of the plug-in columns on both sides, but will naturally flip, so that the coarse particles in the screening box can be smoothly dumped to the Z-shaped discharge port at the bottom of the base, so as to realize rapid cleaning and discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is the appearance diagram of the utility model;

[0021] Figure 3 It is an exploded view of the rotating component part of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the connecting column of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the screening box of the utility model.

[0024] In the figure: 1, base; 2, rear connecting plate; 3, hydraulic telescopic column; 4, connecting plate; 5, connecting column; 501, sliding block; 502, L-shaped column; 503, clamping block; 504, sliding foot; 505, threaded groove; 6, rotating rod; 7, motor; 8, screening box; 801, plug-in column; 802, plug-in slot; 9, cover plate; 10, fixing knob DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-5 , a molding sand screening device for a casting mold, comprising a base 1, a rear connecting plate 2, a screening component and a rotating component, wherein the rear connecting plate 2 is welded to the rear side of the base 1 and has an inverted L-shape, a screening component is provided on the top inner side of the rear connecting plate 2 and inside the base 1, and a rotating component is provided inside the screening component;

[0029] Embodiment 1: The screening assembly includes a hydraulic telescopic column 3, a connecting plate 4, a connecting column 5 and a screening box 8. The hydraulic telescopic column 3 is inverted and fixed to the inner top bolt of the rear connecting plate 2. The top of the connecting plate 4 is fixed to the bottom end of the hydraulic telescopic column 3 by bolts. The bottom of the connecting plate 4 is clamped with the top ends of the two connecting columns 5. The other ends of the two connecting columns 5 jointly clamp the screening box 8.

[0030] In this embodiment, a Z-shaped discharge port is provided inside the base 1 , and a cover plate 9 is plugged into the top of the screening box 8 .

[0031] It should be noted that the Z-shaped discharge port provided inside the base 1 not only facilitates the discharge of fine particles after screening, but also its unique design can effectively prevent material blockage and improve the discharge efficiency. The cover plate 9 plugged into the top of the screening box 8 ensures the sealing of the screening box 8 during the screening process, prevents material splashing, and also facilitates the cleaning of the screening box 8 after the screening is completed.

[0032] Embodiment 2: The rotating assembly includes a rotating rod 6 and a motor 7. A threaded section is provided on the outside of the rotating rod 6 and is threadedly connected to the two connecting columns 5 near the top. Both ends of the rotating rod 6 are rotatably connected to the two sides of the connecting plate 4 through bearings and one end thereof passes through the connecting plate 4 and is fixed to the output end of the motor 7 by bolts. The bottom bolts of the motor 7 are fixed with a support plate, and the support plate is welded to the outer side of the connecting plate 4.

[0033] It should be noted that the rotating assembly is composed of a rotating rod 6 and a motor 7. Two threaded sections with opposite directions are arranged on the outside of the rotating rod 6, and the two threaded sections are respectively threadedly connected with the thread grooves 505 inside the two connecting columns 5. When the motor 7 is started, the rotating rod 6 is driven to rotate, and due to the opposite direction of the threads, the two connecting columns 5 will move away from each other, thereby achieving the clamping and release of the screening box 8.

[0034] In this embodiment, the connecting plate 4 is an inverted U-shape and has two sets of symmetrically distributed sliding grooves on the top of its inner wall. The connecting column 5 is composed of a sliding block 501, an L-shaped column 502 and a clamping block 503 in sequence. Two sliding feet 504 are provided on the top of the sliding block 501 and are slidably connected to the sliding grooves of the connecting plate 4 through the sliding feet 504.

[0035] It should be noted that the slide groove on the top of the inner wall of the connecting plate 4 cooperates with the sliding foot 504 on the sliding block 501 in the connecting column 5 to achieve stable sliding of the connecting column 5 on the connecting plate 4. This design not only ensures the smooth movement of the screening box 8, but also increases the stability of the entire device.

[0036] In this embodiment, a thread groove 505 is formed in the middle of the sliding block 501 , and there are two thread segments on the outside of the rotating rod 6 , with the thread directions being opposite and symmetrically distributed. The two thread segments are respectively threadedly connected to the thread grooves 505 of the two sliding blocks 501 .

[0037] In this embodiment, a plug-in hole 506 is commonly provided on the L-shaped column 502 and the clamp block 503. A filter screen is arranged at the bottom of the top opening of the screening box 8 and plug-in columns 801 are welded on both sides thereof. The plug-in columns 801 on both sides are respectively plugged into the plug-in holes 506 of the two connecting columns 5 and the ends after plugging are widened.

[0038] It should be noted that the plug-in through holes 506 provided on the L-shaped column 502 and the clamp block 503 cooperate with the plug-in columns 801 welded on both sides of the screening box 8 to ensure the stability of the screening box 8 in the clamped state. The widened design after plugging further enhances the firmness of the connection, and the widened ends of the plug-in columns 801 are to prevent the screening box 8 from falling.

[0039] In this embodiment, a plug-in slot 802 is further provided in the middle of the front and rear sides of the screening box 8, and plug-in blocks are welded correspondingly to the front and rear sides of the cover plate 9. After the plug-in blocks are plugged into the plug-in slot 802, a fixing knob 10 is threadedly connected thereto.

[0040] It should be noted that the plug-in slots 802 provided in the middle of the front and rear sides of the screening box 8 cooperate with the plug-in blocks welded on the front and rear sides of the cover plate 9, and the screening box 8 is closed and fixed through the threaded connection of the fixing knob 10. This design not only facilitates the installation and removal of the cover plate, but also ensures the safety during the screening process.

[0041] Working principle:

[0042] By extending and retracting the hydraulic telescopic column 3, the screening box 8 is driven up and down under the connection of the connecting plate 4 and the connecting column 5, thereby replacing manual screening. The fine particles screened by the filter fall to the bottom of the base and can be quickly discharged under the action of the Z-shaped discharge port. When the screening is completed, the coarse particles in the screening box need to be discharged. After removing the fixed knob 10 and the cover plate 9 in turn, start the motor 7 to drive the rotating rod 6 to rotate. Due to the threaded sections at both ends of the outside thereof with opposite directions and respectively connected to the two connecting columns 5 for rotation, the two connecting columns 5 move away from each other to release the clamping of the screening box 8. At this time, under the support of the plug-in columns 801 on both sides of the screening box 8, the screening box 8 will not fall but will flip over, so that the coarse particles inside the screening box 8 fall to the Z-shaped discharge port at the bottom of the base, thereby being quickly discharged.

[0043] Beneficial effects:

[0044] The molding sand screening device for casting molds can drive the screening box 8 to move up and down through the extension and retraction of the hydraulic telescopic column 3, combined with the structure of the connecting plate 4 and the connecting column 5, so as to realize automatic screening of materials, greatly reducing the burden of manual operation. The filter screen inside the screening box 8 can effectively separate fine particles, and the fine particles will directly fall to the Z-shaped discharge port of the base 1, so as to be quickly discharged. When the screening is completed, when it is necessary to clean the coarse particles in the screening box 8, first, the sealing of the screening box 8 is released by disassembling the fixing knob 10 and the cover plate 9, and then the motor 7 is started to drive the rotating rod 6 to rotate. Since two sections of threads in opposite directions are provided on the rotating rod 6, and they are respectively threadedly connected with the thread grooves 505 inside the two connecting columns 5, as the rotating rod 6 rotates, the two connecting columns 5 will move away from each other, so as to release the clamping of the screening box 8. At this time, the screening box 8 will not fall under the support of the plug-in columns 801 on both sides, but will naturally flip, so that the coarse particles in the screening box 8 can be smoothly dumped to the Z-shaped discharge port at the bottom of the base 1, so as to realize rapid cleaning and discharge.

[0045] Although the 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. A molding sand screening device for a casting mold, comprising a base, a rear connecting plate, a screening assembly and a rotating assembly, wherein the rear connecting plate is welded to the rear side of the base and has an inverted L-shape, the inner top of the rear connecting plate and the inside of the base are provided with the screening assembly, and the rotating assembly is provided inside the screening assembly; Features: The screening assembly comprises a hydraulic telescopic column, a connecting plate, a connecting column and a screening box, wherein the hydraulic telescopic column is inverted and fixed with the top bolts on the inner side of the rear connecting plate, the top of the connecting plate is fixed with the bottom bolts of the hydraulic telescopic column, the bottom of the connecting plate is clamped with the top ends of the two connecting columns, and the other ends of the two connecting columns jointly clamp the screening box; The rotating assembly includes a rotating rod and a motor. A threaded section is provided on the outside of the rotating rod and is threadedly connected to two connecting columns near the top. Both ends of the rotating rod are rotatably connected to both sides of the connecting plate through bearings and one end thereof passes through the connecting plate and is bolted to the output end of the motor. A support plate is bolted to the bottom of the motor, and the support plate is welded to the outer side of the connecting plate.

2. The molding sand screening device for casting mold according to claim 1, characterized in that: A Z-shaped discharge port is arranged inside the base, and a cover plate is plugged into the top of the screening box.

3. The molding sand screening device for casting mold according to claim 2, characterized in that: The connecting plate is in an inverted U shape and has two sets of symmetrically distributed sliding grooves on the top of its inner wall. The connecting column is composed of a sliding block, an L-shaped column and a clamping block in sequence. Two sliding feet are provided on the top of the sliding block and are slidably connected to the sliding grooves of the connecting plate through the sliding feet.

4. The molding sand screening device for casting mold according to claim 3, characterized in that: A thread groove is provided in the middle of the sliding block, and the number of thread segments on the outside of the rotating rod is two, and the thread directions thereof are opposite and symmetrically distributed, and the two thread segments are respectively threadedly connected with the thread grooves of the two sliding blocks.

5. The molding sand screening device for casting mold according to claim 4, characterized in that: The L-shaped column and the clamp block are jointly provided with a plug-in through hole, a filter screen is arranged at the bottom of the top opening of the screening box and plug-in columns are welded on both sides thereof, the plug-in columns on both sides are respectively plugged into the plug-in through holes of the two connecting columns and the ends after plugging are provided with widening.

6. The molding sand screening device for casting mold according to claim 5, characterized in that: The middle part of the front and rear sides of the screening box is also provided with a plug-in slot, and the front and rear sides of the cover plate are welded with plug-in blocks corresponding thereto. After the plug-in blocks are plugged into the plug-in slot, they are threadedly connected with a fixing knob.

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