Automatic sand adding equipment for metal casting

Abstract

The utility model belongs to the field of metal casting, particularly relates to automatic sand adding equipment for metal casting, and aims to solve the problems that caking raw materials are stirred through stirring, the raw material dispersing effect is poor, and the discharging efficiency is affected. The automatic sand adding equipment for metal casting comprises a fixed barrel, and the top of the fixed barrel is fixedly connected with a feeding hopper; the bottom of the feeding hopper is arranged in a conical shape, the top of the feeding hopper is fixedly connected with a support, the top of the support is fixedly connected with a driving motor, one end of an output shaft of the driving motor is fixedly connected with an extrusion cylinder, and the bottom of the extrusion cylinder is arranged in a conical shape. According to the device, blocky raw materials can be extruded and dispersed, the dispersing effect of the raw materials is improved under the action of an extrusion plate, and the first filter screen can be movably arranged, so that the discharging speed of the raw materials can be improved by utilizing the movement of the first filter screen, and the first filter screen is prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of metal casting technology, and in particular to an automatic sand-adding device for metal casting. Background Technology

[0002] Sand casting is a metal casting process that uses sand molds as the mold material. During the casting process, sand is used as the mold material, and it is compacted and solidified to form a mold cavity. Molten metal is then poured in, and after the metal cools and solidifies, the casting is removed. During the casting process, sand needs to be added.

[0003] A search revealed that CN220837802U discloses an automated sand-adding device for metal casting, which includes a box. Although the device can avoid local accumulation during use, it agitates the agglomerated raw materials, resulting in poor dispersion of the raw materials and affecting the feeding efficiency. Therefore, an automatic sand-adding device for metal casting is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where stirring agglomerated raw materials results in poor dispersion and reduced material feeding efficiency. Therefore, this invention proposes an automatic sand feeding device for metal casting.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic sand-adding device for metal casting includes a fixed bucket, a feeding hopper fixedly connected to the top of the fixed bucket, the bottom of the feeding hopper being conical, a support fixedly connected to the top of the feeding hopper, a drive motor fixedly connected to the top of the support, an extrusion cylinder fixedly connected to one end of the output shaft of the drive motor, the bottom of the extrusion cylinder being conical, and the gap between the feeding hopper and the extrusion cylinder gradually decreasing from top to bottom.

[0007] The inner wall of the fixed barrel is fixedly connected with multiple telescopic rods, and a first filter screen is fixedly connected between the top of the telescopic rods. A spring is fixedly connected between the first filter screen and the bottom of the telescopic rod.

[0008] A model box is inserted into the bottom of the fixed bucket.

[0009] As a further embodiment of this utility model, a connecting shaft is fixedly connected to the bottom of the extrusion cylinder, a pressure sleeve is fixedly connected to the bottom of the connecting shaft, a plurality of right-angled triangular pressure blocks are provided at the bottom of the pressure sleeve, a support sleeve is fixedly connected to the surface of the first filter screen, and a plurality of pressure grooves that cooperate with the pressure blocks are provided on the surface of the support sleeve.

[0010] As a further embodiment of this utility model, a conical partition is fixedly connected to the inner circumference of the fixed bucket, and a connecting discharge pipe is fixedly connected to the bottom of the partition, with a solenoid valve installed at the bottom of the discharge pipe.

[0011] As a further improvement of this invention, a vibration motor is fixedly connected to the bottom of the fixed bucket.

[0012] As a further embodiment of this utility model, an installation box is fixedly connected to one inner wall of the fixed barrel, a second filter screen is inserted into one side of the installation box, the second filter screen passes through the fixed barrel, and a fan is fixedly connected to one outer wall of the fixed barrel, with the exhaust end of the fan connected to the installation box through a pipe.

[0013] As a further embodiment of this utility model, an L-shaped connecting rod is fixedly connected to the bottom of the first filter screen, the bottom of the connecting rod is in contact with the bottom of the second filter screen, and a clearance opening is provided on one side of the mounting box for the connecting rod to move.

[0014] As a further embodiment of this utility model, the outer wall of the extrusion cylinder and the inner wall of the feed hopper are both fixedly connected with extrusion plates.

[0015] As a further embodiment of this utility model, a material inlet is provided on one side of the fixed barrel, and a baffle is fixed to one side of the material inlet by bolts.

[0016] In this application, during use, the drive motor and fan are started, and then the raw material is fed into the feed hopper. The drive motor drives the extrusion cylinder to rotate. The gap between the feed hopper and the extrusion cylinder is set to gradually decrease from top to bottom. Thus, the extrusion cylinder and the feed hopper cooperate to extrude the lumpy raw material, thereby dispersing it. Under the action of the extrusion plate, the dispersion effect of the raw material is improved. Subsequently, the raw material falls onto the first filter screen for filtration. While the extrusion cylinder rotates, it drives the pressure sleeve to rotate through the connecting shaft. The pressure sleeve uses triangular pressure blocks to press the support sleeve downward, thereby causing the first filter screen to move downward. Then, under the action of the spring... The pressing block enters the pressing groove, which in turn causes the first filter screen to move, increasing the feeding speed of the raw material and preventing the first filter screen from clogging. After the raw material is filtered, the feeding is controlled by the solenoid valve, allowing the raw material to enter the mold box. Then, the vibration motor is started, which makes the raw material compacted for easy use. When the blower starts, it draws out the dust raised in the fixed bucket. At the same time, the dust is filtered by the second filter screen. During the up and down movement of the first filter screen, the connecting rod is also moved. When the connecting rod comes into contact with the second filter screen, it causes the second filter screen to vibrate, which causes the dust to fall off, reducing the number of times the second filter screen needs to be cleaned manually.

[0017] Beneficial effects: In this utility model, the automatic sand feeding device for metal casting uses the extrusion cylinder and the feeding hopper in cooperation. Since the gap between the feeding hopper and the extrusion cylinder is set to gradually decrease from top to bottom, the extrusion cylinder and the feeding hopper can extrude the blocky raw materials, thereby dispersing them. Under the action of the extrusion plate, the dispersion effect of the raw materials is improved.

[0018] In this utility model, the automatic sand feeding device for metal casting has a movable first filter screen, which allows the material to be fed at a faster speed and prevents the first filter screen from clogging.

[0019] In this invention, the extrusion cylinder and the feed hopper work together to extrude lumpy raw materials, thereby dispersing them. The extrusion plate enhances the dispersion of the raw materials. The movable first filter screen increases the feeding speed of the raw materials and prevents clogging. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an automatic sand-adding device for metal casting proposed in this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of an automatic sand-adding device for metal casting proposed in this utility model;

[0022] Figure 3 This utility model proposes an automatic sand-adding device for metal casting. Figure 2 A magnified structural diagram of point A in the middle.

[0023] In the diagram: 1. Fixed bucket; 2. Feed hopper; 3. Fan; 4. Extrusion cylinder; 5. Support; 6. Drive motor; 7. Connecting shaft; 8. Pressure sleeve; 9. Support sleeve; 10. Pressure block; 11. Pressure groove; 12. First filter screen; 13. Partition plate; 14. Discharge pipe; 15. Solenoid valve; 16. Model box; 17. Vibration motor; 18. Spring; 19. Second filter screen; 20. Mounting box; 21. Connecting rod; 22. Telescopic rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1, referring to Figures 1-3A sand-adding device includes: a fixed bucket 1, a feed hopper 2 fixedly connected to the top of the fixed bucket 1, the bottom of the feed hopper 2 being conical, a support 5 fixedly connected to the top of the feed hopper 2, a drive motor 6 fixedly connected to the top of the support 5, an extrusion cylinder 4 fixedly connected to one end of the output shaft of the drive motor 6, the bottom of the extrusion cylinder 4 being conical, and the gap between the feed hopper 2 and the extrusion cylinder 4 gradually decreasing from top to bottom. Thus, when the extrusion cylinder 4 and the feed hopper 2 cooperate, they can extrude lumpy raw materials, thereby dispersing them and improving the dispersion effect of the raw materials.

[0026] Multiple telescopic rods 22 are fixedly connected to the inner wall of the fixed barrel 1. The telescopic rods 22 are composed of sleeves and insert rods connected together, which is an existing structure. A first filter screen 12 is fixedly connected between the top of the telescopic rods 22. The first filter screen 12 is used to filter large particulate impurities in the raw material. A spring 18 is fixedly connected between the first filter screen 12 and the bottom of the telescopic rods 22. By utilizing the movement of the first filter screen 12, the feeding speed of the raw material can be increased and the first filter screen 12 can be prevented from clogging.

[0027] A model box 16 is inserted into the bottom of the fixed bucket 1.

[0028] This application can be used in the field of metal casting, or in other fields applicable to this application.

[0029] Example 2, Reference Figures 1-3 Based on Example 1, an improved automatic sand-adding device for metal casting is applied to the field of metal casting. The bottom of the extrusion cylinder 4 is fixedly connected to a connecting shaft 7, and the bottom of the connecting shaft 7 is fixedly connected to a pressure sleeve 8. The bottom of the pressure sleeve 8 is provided with multiple right-angled triangular pressure blocks 10. The surface of the first filter screen 12 is fixedly connected to a support sleeve 9, and the surface of the support sleeve 9 is provided with multiple pressure grooves 11 that cooperate with the pressure blocks 10. When the extrusion cylinder 4 rotates, the pressure sleeve 8 is driven to rotate through the connecting shaft 7. The pressure sleeve 8 uses the triangular pressure blocks 10 to press the support sleeve 9 downward, thereby causing the first filter screen 12 to move downward. Then, it is reset under the action of the spring 18, so that the first filter screen 12 can move.

[0030] In this application, a conical partition 13 is fixedly connected to the inner circumference of the fixed barrel 1, and a connecting discharge pipe 14 is fixedly connected to the bottom of the partition 13. A solenoid valve 15 is installed at the bottom of the discharge pipe 14. Raw materials can be temporarily stored above the partition 13, and the discharge is controlled by the solenoid valve 15.

[0031] In particular, a vibration motor 17 is fixedly connected to the bottom of the fixed bucket 1. When the vibration motor 17 is started, the raw material is compacted by the vibration motor 17, making it convenient to use.

[0032] It should be noted that an installation box 20 is fixedly connected to one inner wall of the fixed bucket 1, and a second filter screen 19 is inserted into one side of the installation box 20. The second filter screen 19 passes through the fixed bucket 1. A fan 3 is fixedly connected to one outer wall of the fixed bucket 1. The exhaust end of the fan 3 is connected to the installation box 20 through a pipe. When the fan 3 is started, it extracts the dust raised in the fixed bucket 1. At the same time, the dust is filtered by the second filter screen 19 to avoid polluting the air.

[0033] In this invention, an L-shaped connecting rod 21 is fixedly connected to the bottom of the first filter screen 12. The bottom of the connecting rod 21 contacts the bottom of the second filter screen 19. A clearance opening is provided on one side of the mounting box 20 for the connecting rod 21 to move. During the up-and-down movement of the first filter screen 12, the connecting rod 21 is also moved. When the connecting rod 21 contacts the second filter screen 19, the second filter screen 19 vibrates, causing the dust to fall off and reducing the number of times the second filter screen 19 needs to be manually cleaned.

[0034] In particular, the outer wall of the extrusion cylinder 4 and the inner wall of the feed hopper 2 are both fixedly connected with extrusion plates, which improve the dispersion effect of the raw materials under the action of the extrusion plates.

[0035] It should be noted that a material outlet is provided on one side of the fixed bucket 1, and a baffle is fixed to one side of the material outlet by bolts. Removing the baffle makes it easy for people to remove impurities.

[0036] However, as is well known to those skilled in the art, the working principles and wiring methods of the fan 3, drive motor 6 and vibration motor 17 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic sand feeding device for metal casting comprising a stationary tub (1), characterized in that, The top of the fixed barrel (1) is fixedly connected with a feeding hopper (2), the bottom of the feeding hopper (2) is conically arranged, the top of the feeding hopper (2) is fixedly connected with a support (5), the top of the support (5) is fixedly connected with a driving motor (6), one end of the output shaft of the driving motor (6) is fixedly connected with an extrusion cylinder (4), the bottom of the extrusion cylinder (4) is conically arranged, and the gap between the feeding hopper (2) and the extrusion cylinder (4) is gradually reduced from top to bottom. The inner wall of the fixed barrel (1) is fixedly connected with a plurality of telescopic rods (22), the top of the telescopic rods (22) is fixedly connected with a first filter screen (12), and the first filter screen (12) and the bottom of the telescopic rods (22) are fixedly connected with springs (18). The bottom of the fixed barrel (1) is inserted with a model box (16), the bottom of the extrusion cylinder (4) is fixedly connected with a connecting shaft (7), the bottom of the connecting shaft (7) is fixedly connected with a pressing sleeve (8), the bottom of the pressing sleeve (8) is provided with a plurality of right-angled triangular pressing blocks (10), the surface of the first filter screen (12) is fixedly connected with a supporting sleeve (9), and the surface of the supporting sleeve (9) is provided with a plurality of pressing grooves (11) matched with the pressing blocks (10).

2. The automatic sand feeding apparatus for metal casting according to claim 1, wherein The circumferential inner wall of the fixed barrel (1) is fixedly connected with a conical partition plate (13), the bottom of the partition plate (13) is fixedly connected with a communicating drain pipe (14), and the bottom of the drain pipe (14) is mounted with an electromagnetic valve (15).

3. The automatic sand feeding apparatus for metal casting according to claim 1, wherein The bottom of the fixed barrel (1) is fixedly connected with a vibration motor (17).

4. The automatic sand feeding apparatus for metal casting according to claim 3, wherein One side of the fixed barrel (1) is fixedly connected with a mounting box (20), one side of the mounting box (20) is inserted with a second filter screen (19), the second filter screen (19) penetrates the fixed barrel (1), one side of the fixed barrel (1) is fixedly connected with a fan (3), and the suction end of the fan (3) is in communication with the mounting box (20) through a pipeline.

5. The automatic sand feeding apparatus for metal casting according to claim 4, wherein The bottom of the first filter screen (12) is fixedly connected with an L-shaped connecting rod (21), the bottom of the connecting rod (21) is in contact with the bottom of the second filter screen (19), and one side of the mounting box (20) is provided with a position avoiding opening for the movement of the connecting rod (21).

6. The automatic sand feeding apparatus for metal casting according to claim 1, wherein The outer wall of the extrusion cylinder (4) and the inner wall of the feeding hopper (2) are fixedly connected with extrusion plates.

7. The automatic sand feeding apparatus for metal casting according to claim 1, wherein One side of the fixed barrel (1) is provided with a material taking opening, and one side of the material taking opening is fixedly connected with a baffle through bolts.

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