Sand suction device for core making

Abstract

The utility model discloses a sand suction device for core manufacturing, and belongs to the technical field of technological equipment manufacturing. The sand suction device for core making further comprises a stepping motor fixedly connected to the lower side of the anti-leakage plug. The output end of the stepping motor is fixedly connected with a stirring rod; the stirring rod is rotationally connected with the anti-leakage plug; elastic sheets are arranged on two sides of the box body; a pair of vibration motors is arranged at the upper end of the upper plate; the output ends of the two vibration motors abut against the elastic pieces on the same side. The upper ends of the two elastic pieces abut against the outer side wall of the feeding hopper. And by arranging the stepping motor, the leakage-proof plug and the stirring rod, the stirring rod is used for stirring fine sand at the lower end of the feeding hopper, and the discharging efficiency and the sand suction effect are improved.

Description

Technical Field

[0001] This utility model belongs to the field of process equipment manufacturing technology, and more specifically, relates to a sand suction device for core making. Background Technology

[0002] Core making is the process of shaping sand into cores that conform to the shape of a core box. It is divided into two types: manual core making and machine core making. Machine core making is more commonly used in mass production. Manual core making includes: clay sand core making, oil sand core making, resin sand core making, resin self-hardening sand core making, and water glass self-hardening sand core making. Machine core making includes: hot core box method, warm core box method, resin-coated sand method, and cold core box method. The core making process requires 140-mesh fine sand. Due to the overall height of the core making equipment, workers need to transport bags of fine sand to the feeding area of ​​the equipment or load the bags onto a lifting device before pouring them into the equipment each time they need to add fine sand. This method is time-consuming and labor-intensive, and has its shortcomings.

[0003] For example, patent application number CN202021147338.7 describes an automatic sand suction device for core making, comprising: a housing with an inlet and an outlet pipe at its bottom; and a blocking device for blocking the inlet and supplying air to the housing, comprising a blocking rod, an empty cylinder, and an air inlet pipe. The blocking rod is connected to the empty cylinder with a clearance fit, and the air inlet pipe is connected to and communicates with the interior of the empty cylinder. In this invention, fine sand enters the housing through the inlet. When the fine sand reaches a certain amount in the housing, the air inlet pipe supplies air to the interior of the empty cylinder. The gas drives the blocking rod to move and block the inlet, creating a sealed space in the unfilled area of ​​the housing. The gas flows out through the gap between the blocking rod and the empty cylinder, increasing the air pressure in the unfilled area. Since the fine sand has a mesh size of 140 and is very light, the gas pressure is used to discharge the fine sand from the outlet pipe, achieving automatic sand suction. This eliminates the need for employees to carry bags of fine sand to the inlet of the core making equipment and pour it into the equipment, reducing the labor intensity of employees.

[0004] Although the aforementioned automatic sand suction device for core making can facilitate material discharge using gas pressure, the material discharge effect using gas pressure is poor and the discharge efficiency is low. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a sand suction device for core making, which improves the discharge efficiency and sand suction effect.

[0006] This utility model discloses a core-making sand-absorbing device, comprising a housing; an upper plate is snapped onto the upper end of the housing; a feeding hopper is embedded in the inner side of the upper plate; a pair of electric cylinders are fixedly connected to the upper end of the upper plate; a leak-proof plug is fixedly connected to the electric cylinders; two pairs of support legs are fixedly connected to the lower end of the housing; a discharge pipe is fixedly connected to the lower end of the housing; a stepper motor is fixedly connected to the lower side of the leak-proof plug; a stirring rod is fixedly connected to the output end of the stepper motor; the stirring rod is rotatably connected to the leak-proof plug; spring plates are provided on both sides of the housing; a pair of vibration motors are provided on the upper end of the upper plate; the output ends of the two vibration motors respectively abut against the spring plates on the same side; the upper ends of the two spring plates abut against the outer wall of the feeding hopper.

[0007] Preferably, the two sides of the housing are connected by interlocking fixing bolts; each fixing bolt passes through a spring clip; and each fixing bolt is threaded with a lock nut on its outer side.

[0008] Preferably, the stirring rod has multiple barbs on its outer circumference; there is a gap between the stirring rod and the lower end of the feed hopper that allows fine sand to pass through.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] (1) By setting a stepper motor, a leak-proof plug, and a stirring rod, the fine sand at the bottom of the feed hopper is stirred by the stirring rod, which improves the discharge efficiency and sand suction effect.

[0011] (2) By setting up a vibration motor and a spring, the output end of the vibration motor drives the spring to repeatedly hit the outer wall of the feed hopper, thereby improving the sand suction effect and making it easier for fine sand to fall off.

[0012] (3) By setting fixed bolts and locking nuts, it is easy to disassemble and maintain the spring, which improves the sand suction effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0015] The following are the labels in the diagram: 10. Feed hopper; 11. Box body; 12. Top plate; 13. Vibration motor; 14. Fixing bolt; 16. Locking nut; 17. Spring; 18. Electric cylinder; 19. Support leg; 20. Discharge pipe; 21. Leakage plug; 22. Stepper motor; 23. Stirring rod. Detailed Implementation

[0016] Specific Implementation Example 1: Please refer to Figure 1-2A core-making sand-absorbing device includes a housing 11; an upper plate 12 is snapped onto the upper end of the housing 11; a feed hopper 10 is embedded in the inner side of the upper plate 12; a pair of electric cylinders 18 are fixedly connected to the upper end of the upper plate 12; a leak-proof plug 21 is fixedly connected to the electric cylinders 18; two pairs of support legs 19 are fixedly connected to the lower end of the housing 11; a discharge pipe 20 is fixedly connected to the lower end of the housing 11; a stepper motor 22 is fixedly connected to the lower side of the leak-proof plug 21; a stirring rod 23 is fixedly connected to the output end of the stepper motor 22; the stirring rod 23 is rotatably connected to the leak-proof plug 21; and the housing 11 has two sides. A spring sheet 17 is provided; a pair of vibration motors 13 are provided on the upper end of the upper plate 12; the output ends of the two vibration motors 13 respectively abut against the spring sheet 17 on the same side; the upper ends of the two spring sheets 17 abut against the outer wall of the feed hopper 10; by setting a stepper motor 22, a leak-proof plug 21, and a stirring rod 23, the stirring rod 23 is used to stir the fine sand at the lower end of the feed hopper 10, thereby improving the discharge efficiency and sand suction effect; by setting a vibration motor 13 and a spring sheet 17, the output end of the vibration motor 13 drives the spring sheet 17 to repeatedly strike the outer wall of the feed hopper 10, thereby improving the sand suction effect and making the fine sand fall off easily.

[0017] Please see Figure 1 The two sides of the housing 11 are connected by interlocking fixing bolts 14; each fixing bolt 14 passes through a spring piece 17; each fixing bolt 14 is threaded with a locking nut 16 on its outer side; by setting the fixing bolts 14 and locking nuts 16, it is easy to disassemble and maintain the spring piece 17, and the sand suction effect is improved.

[0018] Please see Figure 2 The stirring rod 23 has multiple barbs on its outer circumference; there is a gap between the stirring rod 23 and the lower end of the feed hopper 10 that allows fine sand to pass through.

[0019] During operation, fine sand is poured into the inside of the feed hopper 10, and the stepper motor 22 is started. The output end of the stepper motor 22 drives the stirring rod 23 to rotate, stirring the fine sand inside the feed hopper 10. Then, the electric cylinder 18 is started, and the output end of the electric cylinder 18 drives the anti-leakage plug 21 to move down. Then, the fine sand falls from the bottom of the feed hopper 10 into the inside of the box 11, and finally the fine sand is discharged from the discharge pipe 20.

[0020] When fine sand causes a blockage, the vibration motor 13 is activated. The output of the vibration motor 13 drives the spring plate 17 to rotate. The spring plate 17 continuously strikes the feed hopper 10. The fine sand inside the feed hopper 10 falls quickly under the action of the stirring rod 23 and the vibration of the spring plate 17, improving the discharge efficiency. By utilizing changes in gas pressure and gas flow, combined with stirring and striking, the discharge effect is maximized.

[0021] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0023] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A core-making sand-absorbing device, comprising a housing (11); an upper plate (12) is snapped onto the upper end of the housing (11); a feed hopper (10) is embedded in the inner side of the upper plate (12); a pair of electric cylinders (18) are fixedly connected to the upper end of the upper plate (12); a leak-proof plug (21) is fixedly connected to the electric cylinders (18); two pairs of support legs (19) are fixedly connected to the lower end of the housing (11); and a discharge pipe (20) is fixedly connected to the lower end of the housing (11); characterized in that, It also includes a stepper motor (22) fixedly connected to the lower side of the leak-proof plug (21); the output end of the stepper motor (22) is fixedly connected to the stirring rod (23); the stirring rod (23) is rotatably connected to the leak-proof plug (21); spring pieces (17) are provided on both sides of the box body (11); a pair of vibration motors (13) are provided on the upper end of the upper plate (12); the output ends of the two vibration motors (13) respectively abut against the spring pieces (17) on the same side; the upper ends of the two spring pieces (17) abut against the outer wall of the feed hopper (10).

2. The core-making sand-suction device according to claim 1, characterized in that: The housing (11) is connected to the two sides by interlocking fixing bolts (14); each fixing bolt (14) passes through a spring (17); and each fixing bolt (14) is threaded with a locking nut (16) on the outside.

3. The core-making sand-suction device according to claim 1, characterized in that: The stirring rod (23) has multiple barbs on its outer circumference; there is a gap between the stirring rod (23) and the lower end of the feed hopper (10) that allows fine sand to pass through.

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