Precise sand adding device for horizontal molding line

Abstract

The utility model belongs to the field of industrial casting, particularly relates to an accurate sand adding device for a horizontal molding line, and provides the following scheme aiming at the problems that a conveying belt is unstable in feeding during feeding and molding sand is inconvenient to discharge when the feeding is excessive in the prior art: the accurate sand adding device comprises a rack and a hopper arranged at the top of the rack, a plurality of weighing sensors are fixedly mounted between the bottom of the hopper and the top of the rack, one side of the hopper is fixedly connected with a through mounting pipe, one end of the mounting pipe is communicated with the hopper, the bottom of the mounting pipe is fixedly connected with a discharging pipe for discharging raw materials, and a through driving shaft is rotationally connected between the two ends of the mounting pipe; according to the molding sand feeding device, excessive molding sand in the hopper is discharged through the feeding blades, so that the weight error of the molding sand in the hopper is reduced, the sand feeding accuracy is improved, meanwhile, the hopper can vibrate, the molding sand is prevented from staying and being attached to the interior of the hopper, and the feeding accuracy is further improved.

Description

A precision sand-adding device for horizontal molding lines Technical Field

[0001] This utility model relates to the field of industrial casting technology, and in particular to a precise sand-adding device for horizontal molding lines. Background Technology

[0002] A horizontal molding line refers to a production line in clay sand casting where molds are used to make horizontal partings based on the properties of the casting, and the upper and lower molds are joined together for pouring. Horizontal molding lines play an important role in casting production due to their high efficiency, simplicity, and flexibility.

[0003] In the process of horizontal molding line, precise addition of molding sand is required. According to the search, CN215144430U discloses a precision sand adding device for horizontal molding line in the metallurgical casting industry. Although the above device can flatten the molding sand when in use, the conveyor belt feeding is unstable when feeding material. When the material is over-added, it is inconvenient to discharge the molding sand. Therefore, a precision sand adding device for horizontal molding line is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the shortcomings of existing technologies, such as unstable material feeding via conveyor belt and difficulty in discharging molding sand when there is excessive material feeding. Therefore, this invention proposes a precise sand feeding device for horizontal molding lines.

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

[0006] A precision sand feeding device for a horizontal molding line includes a frame and a hopper mounted on top of the frame. Multiple weighing sensors are fixedly installed between the bottom of the hopper and the top of the frame. A through-hole mounting pipe is fixedly connected to one side of the hopper, with one end of the mounting pipe communicating with the hopper. A discharge pipe for discharging raw materials is fixedly connected to the bottom of the mounting pipe. A through-hole drive shaft is rotatably connected between the two ends of the mounting pipe. Spiral feeding blades are fixedly connected to the circumference of the drive shaft for discharging excess raw materials. A drive assembly for driving the drive shaft to rotate is provided at one end of the mounting pipe.

[0007] A discharge assembly is disposed at the bottom of the hopper for discharging material.

[0008] As a further embodiment of this utility model, the discharge assembly includes a discharge pipe, which is fixed to the bottom of the hopper. A through-hole plate is inserted into one side of the discharge pipe, and a cylinder is fixedly connected to the outer wall of one side of the discharge pipe. One end of the cylinder piston rod is fixed to the through-hole plate.

[0009] As a further embodiment of this utility model, the drive assembly includes a bracket, which is fixed to one end of the mounting tube. A motor is fixedly connected to one end of the bracket, and one end of the motor output shaft is fixed to the drive shaft.

[0010] As a further embodiment of this utility model, a through shaft is rotatably connected between the two sides of the hopper, a torsion spring is fixedly connected between the shaft and the hopper, two fixing plates are fixedly connected to one side of the outer wall of the hopper, two striking rods that cooperate with the fixing plates are fixedly connected to the circumference of the shaft, and a drive rod is fixedly connected to one end of the shaft.

[0011] As a further embodiment of this utility model, an overrunning clutch is fixedly installed on the circumference of the drive shaft, a rotating sleeve is fixedly installed on the outer wall of the overrunning clutch, a lever is fixedly connected to the outer circumference of the rotating sleeve, and a drive rod that cooperates with the lever is fixedly connected to one end of the rotating shaft.

[0012] As a further improvement of this invention, a viewing window is provided on one side of the hopper.

[0013] As a further embodiment of this utility model, a sleeve is fixedly connected between the inner walls of the two sides of the hopper, and the rotating shaft is located inside the sleeve.

[0014] As a further embodiment of this utility model, a guide pipe is fixedly connected to one side of the frame, and the top of the guide pipe is located below the discharge pipe.

[0015] In this application, during use, before the transfer vehicle reaches the sand-adding station, the belt conveyor above the hopper pours molding sand into the hopper. During the sand-filling process, a weighing sensor measures the weight of the molding sand in the hopper. When the preset weight is reached, sand addition stops. When the amount of raw material added to the hopper exceeds the limit, the motor is started. The motor drives the drive shaft and feeding blades to rotate, and the feeding blades discharge the excess molding sand from the hopper, thereby reducing the weight error of the molding sand in the hopper and improving the accuracy of sand addition. When the transfer vehicle carrying the sand box moves to the bottom of the hopper, the transfer vehicle stops. The rear cylinder starts, which drives the insert plate to move, thereby discharging the molding sand. During the sand discharge process, the motor drives the feeding blades to reverse, pushing the molding sand in the installation tube into the hopper to avoid errors. At the same time, the drive shaft drives the rotating sleeve to rotate through the overrunning clutch. The rotating sleeve drives the rotating shaft to rotate through the lever and drive rod. When the lever and drive rod disengage, the rotating shaft resets under the action of the torsion spring, thereby driving the striking rod to collide with the fixed plate, causing the hopper to vibrate and preventing the molding sand from staying in the hopper, further improving the accuracy of feeding.

[0016] Beneficial effects: In this utility model, the precision sand adding device for a horizontal molding line, by installing an installation pipe on the hopper, allows the excess molding sand in the hopper to be discharged by the feeding blades, thereby reducing the weight error of the molding sand in the hopper and improving the accuracy of sand adding.

[0017] In this utility model, the precise sand feeding device for horizontal molding lines uses a combination of a striking rod and a fixing plate to make the hopper vibrate, preventing molding sand from remaining and adhering to the hopper, and further improving the accuracy of feeding.

[0018] In this invention, the excess molding sand in the hopper is discharged by the feeding blades, thereby reducing the weight error of the molding sand in the hopper and improving the accuracy of sand addition. At the same time, the hopper can vibrate to prevent molding sand from remaining and adhering in the hopper, further improving the accuracy of material addition. Attached Figure Description

[0019] Figure 1 is a three-dimensional structural schematic diagram of a precision sand-adding device for horizontal shaping lines proposed in this utility model;

[0020] Figure 2 is a cross-sectional structural schematic diagram of a precision sand-adding device for horizontal shaping lines proposed in this utility model.

[0021] Figure 3 is a partial structural schematic diagram of a precision sand-adding device for horizontal shaping lines proposed in this utility model.

[0022] In the diagram: 1. Frame; 2. Hopper; 3. Weighing sensor; 4. Viewing window; 5. Discharge pipe; 6. Insert plate; 7. Cylinder; 8. Mounting pipe; 9. Drive shaft; 10. Feed blade; 11. Sleeve; 12. Guide pipe; 13. Support; 14. Motor; 15. Overrunning clutch; 16. Rotating sleeve; 17. Lever; 18. Rotating shaft; 19. Drive rod; 20. Fixing plate; 21. Striking rod; 22. Torsion spring; 23. Discharge pipe. Detailed Implementation

[0023] 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.

[0024] Example 1, referring to Figures 1-3, a sand adding device includes: a frame 1 and a hopper 2 installed on the top of the frame 1. Multiple weighing sensors 3 are fixedly installed between the bottom of the hopper 2 and the top of the frame 1. Before the transfer vehicle arrives at the sand adding station, the belt conveyor above the hopper 2 pours molding sand into the hopper 2. During the sand filling process, the weighing sensors 3 weigh the molding sand in the hopper 2. When the preset weight is reached, the sand adding stops. A through installation pipe 8 is fixedly connected to one side of the hopper 2. One end of the installation pipe 8 is connected to the hopper 2. A discharge pipe 23 for discharging raw materials is fixedly connected to the bottom of the installation pipe 8. A through drive shaft 9 is rotatably connected between the two ends of the installation pipe 8. A spiral feeding blade 10 is fixedly connected to the circumference of the drive shaft 9 for discharging excess raw materials. The excess molding sand in the hopper 2 is discharged by the feeding blade 10, thereby reducing the weight error of the molding sand in the hopper 2 and improving the accuracy of sand adding. A drive assembly for driving the drive shaft 9 to rotate is provided at one end of the installation pipe 8.

[0025] Discharge assembly, which is located at the bottom of hopper 2 for discharging material.

[0026] This application can be used in the field of industrial casting, or in other fields applicable to this application.

[0027] Example 2, referring to Figures 1-3, improves upon Example 1 by providing a precision sand-adding device for horizontal molding lines, which is applied to the field of industrial casting.

[0028] In this utility model, the discharge assembly includes a discharge pipe 5, which is fixed to the bottom of the hopper 2. A through-hole plate 6 is inserted into one side of the discharge pipe 5, and a cylinder 7 is fixedly connected to the outer wall of one side of the discharge pipe 5. One end of the piston rod of the cylinder 7 is fixed to the through-hole plate 6. When the transfer vehicle carrying the sand box moves to the bottom of the hopper 2, the transfer vehicle stops, and then the cylinder 7 starts. The cylinder 7 drives the through-hole plate 6 to move, thereby causing the molding sand to be discharged.

[0029] In particular, the drive assembly includes a bracket 13, which is fixed to one end of the mounting tube 8. A motor 14 is fixedly connected to one end of the bracket 13. One end of the output shaft of the motor 14 is fixed to the drive shaft 9. When the motor 14 is started, the motor 14 drives the drive shaft 9 and the feeding blade 10 to rotate. A PLC controller is provided on one side of the frame 1 and is electrically connected to the motor 14 and the weighing sensor 3.

[0030] It should be noted that a through-shaft 18 is rotatably connected between the two sides of the hopper 2. A torsion spring 22 is fixedly connected between the shaft 18 and the hopper 2. Two fixing plates 20 are fixedly connected to one side of the outer wall of the hopper 2. Two striking rods 21, which are used in conjunction with the fixing plates 20, are fixedly connected to the circumference of the shaft 18. A drive rod 19 is fixedly connected to one end of the shaft 18. The striking rods 21 collide with the fixing plates 20, causing the hopper 2 to vibrate, preventing molding sand from remaining in the hopper 2, and further improving the accuracy of feeding.

[0031] In this invention, an overrunning clutch 15 is fixedly mounted on the circumference of the drive shaft 9, and a rotating sleeve 16 is fixedly mounted on the outer wall of the overrunning clutch 15. A lever 17 is fixedly connected to the outer circumference of the rotating sleeve 16, and a drive rod 19 that works with the lever 17 is fixedly connected to one end of the rotating shaft 18. The drive shaft 9 drives the rotating sleeve 16 to rotate through the overrunning clutch 15, and the rotating sleeve 16 drives the rotating shaft 18 to rotate through the lever 17 and the drive rod 19. When the lever 17 disengages from the drive rod 19, the rotating shaft 18 returns to its original position under the action of the torsion spring 22.

[0032] In particular, a viewing window 4 is provided on one side of the hopper 2, which makes it convenient for people to observe the material level inside the hopper 2.

[0033] It should be noted that a sleeve 11 is fixedly connected between the inner walls of the two sides of the hopper 2, and the rotating shaft 18 is located inside the sleeve 11, which protects the rotating shaft 18.

[0034] In this utility model, a guide pipe 12 is fixedly connected to one side of the frame 1. The top of the guide pipe 12 is located below the discharge pipe 23. The guide pipe 12 is used to centrally discharge the raw materials.

[0035] However, as is well known to those skilled in the art, the working principles and wiring methods of the weighing sensor 3 and the motor 14 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.

[0036] 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. A precision sand-feeding device for a horizontal molding line, comprising a frame (1) and a hopper (2) mounted on the top of the frame (1), wherein a plurality of weighing sensors (3) are fixedly installed between the bottom of the hopper (2) and the top of the frame (1), characterized in that, A through-hole mounting pipe (8) is fixedly connected to one side of the hopper (2). One end of the mounting pipe (8) is connected to the hopper (2). A discharge pipe (23) for discharging raw materials is fixedly connected to the bottom of the mounting pipe (8). A through-hole drive shaft (9) is rotatably connected between the two ends of the mounting pipe (8). A spiral feeding blade (10) is fixedly connected to the circumference of the drive shaft (9) for discharging excess raw materials. A drive assembly for driving the drive shaft (9) to rotate is provided at one end of the mounting pipe (8). A discharge assembly is provided at the bottom of the hopper (2) for discharging materials. The discharge assembly includes a discharge pipe (5). The discharge pipe (5) is fixed at the bottom of the hopper (2). A through-hole insert plate (6) is inserted into one side of the discharge pipe (5). A cylinder (7) is fixedly connected to the outer wall of one side of the discharge pipe (5). One end of the piston rod of the cylinder (7) is fixed to the insert plate (6).

2. The precision sand-adding device for horizontal molding lines according to claim 1, characterized in that, The drive assembly includes a bracket (13), which is fixed to one end of the mounting tube (8). A motor (14) is fixedly connected to one end of the bracket (13), and one end of the output shaft of the motor (14) is fixed to the drive shaft (9).

3. The precision sand-adding device for horizontal molding lines according to claim 1, characterized in that, A through shaft (18) is rotatably connected between the two sides of the hopper (2). A torsion spring (22) is fixedly connected between the shaft (18) and the hopper (2). Two fixing plates (20) are fixedly connected to the outer wall of one side of the hopper (2). Two striking rods (21) that cooperate with the fixing plates (20) are fixedly connected to the circumference of the shaft (18). A drive rod (19) is fixedly connected to one end of the shaft (18).

4. The precision sand-adding device for horizontal molding lines according to claim 3, characterized in that, An overrunning clutch (15) is fixedly mounted on the circumference of the drive shaft (9). A rotating sleeve (16) is fixedly mounted on the outer wall of the overrunning clutch (15). A lever (17) is fixedly connected to the outer circumference of the rotating sleeve (16). A drive rod (19) that cooperates with the lever (17) is fixedly connected to one end of the rotating shaft (18).

5. The precision sand-adding device for horizontal molding lines according to claim 3, characterized in that, A viewing window (4) is provided on one side of the hopper (2).

6. The precision sand-adding device for horizontal molding lines according to claim 4, characterized in that, A sleeve (11) is fixedly connected between the inner walls of the two sides of the hopper (2), and the rotating shaft (18) is located inside the sleeve (11).

7. The precise sand-adding device for horizontal molding lines according to claim 1, characterized in that, A guide pipe (12) is fixedly connected to one side of the frame (1), and the top of the guide pipe (12) is located below the discharge pipe (23).

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