Casting molding sand screening equipment for casting

Abstract

The casting molding sand screening equipment comprises a screening box, a box door and a feeding pipe, the middle position of one side of the screening box is provided with an opening, the outer side wall of the screening box is fixedly connected with a collecting frame, the box door is movably connected to the front side of the screening box, and the feeding pipe is arranged at the top of the screening box and communicated with the interior of the screening box. The device further comprises a screening assembly and a conveying assembly, the screening assembly is arranged in the screening box, and the conveying assembly is arranged in the collecting frame. The utility model belongs to the technical field of casting and screening, and particularly relates to casting molding sand screening equipment for casting, which solves the problems of poor screening effect and lower screening efficiency caused by qualified molding sand always existing in screening of unqualified molding sand.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting screening, and particularly relates to a casting molding sand screening device for casting. Background Art

[0002] Casting is a method of pouring liquid metal into a casting cavity adapted to the shape of a part, and waiting for it to cool and solidify to obtain a part or blank. The substances to be cast are mostly metals that were originally solid but heated to a liquid state (e.g., copper, iron, aluminum, tin, lead, etc.), and the materials of the casting mold can be sand, metal, or even ceramic. Depending on different requirements, different methods will be used. The materials of ordinary casting molds are raw sand, clay, water glass, resin, and other auxiliary materials. The casting molds for special casting include: investment casting, lost foam casting, permanent mold casting, ceramic mold casting, etc.

[0003] During the existing molding sand screening process, there are often still qualified molding sands in the unqualified molding sands, resulting in poor screening effects and slow screening efficiency, making the practicability of the screening machine low. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that there are often still qualified molding sands in the unqualified molding sands, resulting in poor screening effects and slow screening efficiency.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is as follows: a casting molding sand screening device for casting, including a screening box, a box door, and a feeding pipe. The middle position on one side of the screening box is open. A collection box is fixedly connected to the outer side wall of the screening box. The box door is movably connected to the front side of the screening box. The feeding pipe is arranged on the top of the screening box and communicates with the inside of the screening box. It also includes a screening component and a conveying component. The screening component is arranged inside the screening box, and the conveying component is arranged inside the collection box. The screening component is used for double screening treatment of the casting molding sand, and the conveying component is used for conveying the casting molding sand that fails the initial screening for re-screening.

[0006] Further, the screening component includes a screening plate, a servo motor, a vertical rod, and a linkage rod, where:

[0007] One end of the screening plate is hinged to the inner wall of the screening box, and the other end passes through the screening box and is arranged inside the collection box. The servo motor is fixedly installed on the outer side wall of the screening box. The vertical rod is fixedly connected to the output end of the servo motor. The linkage rod is movably connected between the vertical rod and the screening plate;

[0008] The screening plate is inclined, and the front and back sides thereof are vertically convex.

[0009] Further, the screening component also includes a stepping motor and a screening box, where:

[0010] The stepping motor is fixedly installed at the inner bottom of the screening box, and the screening box is fixedly connected to the output end of the stepping motor.

[0011] Further, the conveying assembly includes a conveying cylinder, a brushless motor, conveying blades and an inclined pipe, wherein:

[0012] The conveying cylinder is fixedly connected inside the collection box, the brushless motor is fixedly installed at the bottom of the collection box, the output end of the brushless motor is arranged inside the conveying cylinder, the conveying blades are fixedly connected to the output end of the brushless motor, and the inclined pipe is fixedly connected between the screening box and the conveying cylinder and is communicated with the conveying cylinder and the screening box.

[0013] Further, a rotating motor is fixedly installed at the top of the screening box, the output end of the rotating motor is fixedly connected with a dispersion plate, and the dispersion plate is arranged on the top of the screening plate.

[0014] Further, a guide plate is arranged on the inner wall of the screening box and is inclined, a cylinder is fixedly connected to the inner bottom of the screening box, and the stepping motor is arranged inside the cylinder.

[0015] Further, the inner bottom of the collection box is inclined, the dispersion plate is arranged with a narrow upper part and a wide lower part, and the inner bottom of the feed pipe is arc-shaped.

[0016] After adopting the above structure, the beneficial effects of the present utility model are as follows:

[0017] (1) The molding sand is divided into two batches and enters the screening box through the feed pipe, and the dispersion plate rotates to disperse the molding sand, avoiding accumulation on the screening plate and causing blockage;

[0018] (2) The reciprocating movement of the screening plate up and down and the rotational movement of the screening box can perform double screening on the molding sand, improving the screening efficiency;

[0019] (3) The molding sand that fails to pass the initial screening can be concentrated in the collection box, and the conveying blades convey it to the inner top of the screening box again for re-screening, avoiding the phenomenon that qualified molding sand often exists in the unqualified molding sand. Description of the Drawings

[0020] The drawings are used to provide further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model.

[0021] Figure 1 It is a schematic diagram of the overall structure of a casting molding sand screening device proposed by the present utility model;

[0022] Figure 2 Schematic diagram of the internal structure of the screening box of a screening device for foundry molding sand proposed by the present utility model;

[0023] Figure 3 Half-sectional view of a screening device for foundry molding sand proposed by the present utility model;

[0024] Figure 4 Front sectional view of a screening device for foundry molding sand proposed by the present utility model.

[0025] In the drawings: 1. Screening box, 2. Box door, 3. Feed pipe, 4. Collection frame, 5. Screening plate, 6. Servo motor, 7. Vertical rod, 8. Link rod, 9. Stepper motor, 10. Screening box, 11. Delivery cylinder, 12. Brushless motor, 13. Delivery paddle, 14. Inclined pipe, 15. Rotating motor, 16. Dispersion plate, 17. Deflector plate, 18. Cylinder. Detailed implementation manners

[0026] As Figure 1-2 shown, a screening device for foundry molding sand includes a screening box 1, a box door 2 and a feed pipe 3. The middle position on one side of the screening box 1 is open. A collection frame 4 is fixedly connected to the outer side wall of the screening box 1. The box door 2 is movably connected to the front side of the screening box 1. The feed pipe 3 is arranged on the top of the screening box 1 and is communicated with the inside of the screening box 1. It further includes a screening component and a delivery component. The screening component is arranged inside the screening box 1, and the delivery component is arranged inside the collection frame 4.

[0027] Through the double screening process of the foundry molding sand by the screening component, the screening efficiency is improved. Through the delivery component, the foundry molding sand that fails the initial screening is conveyed for re-screening, improving the screening effect.

[0028] As Figure 1-4 shown, in order to improve the screening efficiency of the molding sand, the screening component includes a screening plate 5, a servo motor 6, a vertical rod 7, a link rod 8, a stepper motor 9 and a screening box 10. One end of the screening plate 5 is hinged to the inner wall of the screening box 1, and the other end thereof passes through the screening box 1 and is arranged inside the collection frame 4. The servo motor 6 is fixedly installed on the outer side wall of the screening box 1. The vertical rod 7 is fixedly connected to the output end of the servo motor 6. The link rod 8 is movably connected between the vertical rod 7 and the screening plate 5. The screening plate 5 is inclined, and its front and rear sides are vertically convex. The stepper motor 9 is fixedly installed at the inner bottom of the screening box 1. The screening box 10 is fixedly connected to the output end of the stepper motor 9.

[0029] Through the up-and-down swing of the screening plate 5 and the uniform rotation of the screening box 10, the molding sand is subjected to double screening, improving the working efficiency.

[0030] As Figure 1-4As shown in the figure, in order to improve the effect of molding sand screening, the conveying assembly includes a conveying cylinder 11, a brushless motor 12, conveying blades 13 and an inclined pipe 14. The conveying cylinder 11 is fixedly connected inside the collection box 4. The brushless motor 12 is fixedly installed at the bottom of the collection box 4. The output end of the brushless motor 12 is arranged inside the conveying cylinder 11. The conveying blades 13 are fixedly connected to the output end of the brushless motor 12. The inclined pipe 14 is fixedly connected between the screening box 1 and the conveying cylinder 11 and is communicated with the conveying cylinder 11 and the screening box 1.

[0031] The rotation of the conveying blades 13 is used to lift and convey the molding sand left after the primary screening, and conduct a secondary screening on it.

[0032] In order to prevent the molding sand from piling up on the screening plate 5 when feeding, a rotary motor 15 is fixedly installed at the top of the screening box 1. The output end of the rotary motor 15 is fixedly connected with a dispersion plate 16, and the dispersion plate 16 is arranged on the top of the screening plate 5.

[0033] In order to enable the molding sand screened by the screening plate 5 to enter the screening box 10, a diversion plate 17 is provided on the inner wall of the screening box 1 and is inclined.

[0034] In order to prevent the molding sand screened by the screening cylinder from affecting the stepping motor 9, a cylinder 18 is fixedly connected to the inner bottom of the screening box 1, and the stepping motor 9 is arranged inside the cylinder 18.

[0035] Among them, the inner bottom of the collection box 4 is inclined, the dispersion plate 16 is arranged with a narrow top and a wide bottom, and the inner bottom of the feed pipe 3 is arc-shaped.

[0036] During specific use, the molding sand is added into the feed pipe 3 through the feed pipe 3. The feed pipe 3 divides the molding sand into two batches and enters the screening box 1. The rotary motor 15 is turned on, and the rotation of the dispersion plate 16 disperses the molding sand to prevent it from piling up and blocking on the screening plate 5. The servo motor 6 is turned on, and the rotation of the vertical rod 7 causes the connecting rod 8 to drive the screening plate 5 to move up and down reciprocally to conduct a primary screening on the molding sand. The qualified molding sand enters the screening box 10 under the guidance of the diversion plate 17, and the unqualified ones are collected in the collection box 4. The brushless motor 12 is turned on, and the rotation of the conveying blades 13 lifts the molding sand until it enters the inner top of the screening box 1 again through the inclined pipe 14 for a secondary screening process to avoid the phenomenon that there are still qualified molding sands among the unqualified molding sands. The stepping motor 9 is turned on, and the rotational movement of the screening box 10 can conduct a secondary screening process on the molding sand to improve the screening efficiency.

[0037] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the creation of the present utility model, design similar structural methods and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A casting sand screening device for casting, comprising a screening box, a box door and a feed pipe, wherein the middle position of one side of the screening box is provided with an opening, the outer side wall of the screening box is fixedly connected with a collecting frame, the box door is movably connected to the front side of the screening box, the feed pipe is provided at the top of the screening box and communicates with the inside of the screening box, and is characterized in that: It also includes a screening component and a conveying component. The screening component is arranged inside the screening box, and the conveying component is arranged in the collecting frame. The screening component is used for double screening of the foundry sand, and the conveying component is used for conveying and re-screening the foundry sand that failed the initial screening.

2. A foundry sand screening device for casting according to claim 1, characterized in that: The screening assembly comprises a screening plate, a servo motor, a vertical rod and a connecting rod, wherein: One end of the screening plate is hingedly connected to the inner wall of the screening box, and the other end thereof passes through the screening box and is arranged in the collecting frame. The servo motor is fixedly installed on the outer side wall of the screening box, the vertical rod is fixedly connected to the output end of the servo motor, and the linkage rod is movably connected between the vertical rod and the screening plate. The screening plate is arranged obliquely, and its front and rear sides are arranged as vertical protrusions.

3. A foundry sand screening device for casting according to claim 2, characterized in that: The screening assembly further comprises a stepper motor and a screening box, wherein: The stepper motor is fixedly installed at the bottom of the screening box, and the screening box is fixedly connected to the output end of the stepper motor.

4. The foundry sand screening device for casting according to claim 3, characterized in that: The conveying assembly includes a conveying cylinder, a brushless motor, a conveying blade and an inclined tube, wherein: The conveying cylinder is fixedly connected inside the collecting frame, the brushless motor is fixedly installed at the bottom of the collecting frame, the output end of the brushless motor is arranged inside the conveying cylinder, the conveying blade is fixedly connected to the output end of the brushless motor, and the inclined tube is fixedly connected between the screening box and the conveying cylinder, and is communicated with the conveying cylinder and the screening box.

5. The foundry sand screening device for casting according to claim 4, characterized in that: A rotating motor is fixedly installed on the top of the screening box, and a dispersion disk is fixedly connected to the output end of the rotating motor. The dispersion disk is arranged on the top of the screening plate.

6. The foundry sand screening device for casting according to claim 5, characterized in that: The inner wall of the screening box is provided with a guide plate which is arranged in an inclined manner. The bottom of the screening box is fixedly connected with a cylinder, and the stepping motor is arranged inside the cylinder.

7. The foundry sand screening device according to claim 6, characterized in that: The inner bottom of the collecting frame is inclined, the dispersion plate is narrow at the top and wide at the bottom, and the inner bottom of the feeding pipe is arc-shaped.

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