Multi-stage screening device

Abstract

The utility model discloses a multistage screening device which comprises a conveying belt, a screening bent baffle, a screening arc baffle piece, a feeding device and a machine frame, the conveying belt is installed on the machine frame, the upper end face of the conveying belt is used for conveying brazing rings, and the screening bent baffle, the screening arc baffle piece and the feeding device are located above the conveying belt and arranged in the conveying direction of the conveying belt. The screening bent baffle pushes the brazing rings to one side of the upper end face of the conveying belt, the screening arc baffle piece can screen the brazing rings with the qualified diameters and convey the brazing rings to the feeding device, and the feeding device pushes the brazing rings away from the conveying belt. And the brazing rings can be preliminarily screened, and it is ensured that the normal single brazing ring enters visual inspection.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, and more specifically, to a multi-stage screening device. Background Art

[0002] The brazing ring is an important part of the air-conditioning refrigeration pipe and plays a crucial role in the working process of the air conditioner. After the brazing ring is produced, quality inspection is required. The existing detection method for the brazing ring is usually visual inspection, which includes procedures such as taking pictures and comparing individual brazing rings. However, the produced brazing rings may have situations of adhesion, stacking, and buckling, which will affect the judgment of the visual inspection procedure if directly subjected to visual inspection. Therefore, a technical solution is needed to solve the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned existing technologies, and be able to screen the produced brazing rings, and provide a multi-stage screening device.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a multi-stage screening device, including a conveyor belt, a screening curved baffle, a screening arc baffle, a feeding device, and a frame. The conveyor belt is installed on the frame, and the upper end surface of the conveyor belt is used for conveying the brazing rings. The screening curved baffle, the screening arc baffle, and the feeding device are located above the conveyor belt and are arranged in the conveying direction of the conveyor belt. The screening curved baffle pushes the brazing rings to one side of the upper end surface of the conveyor belt, and the screening arc baffle can screen the brazing rings with qualified diameters and convey them to the feeding device, and the feeding device pushes the brazing rings away from the conveyor belt.

[0006] Further, the screening curved baffle includes a curved plate and a fixing plate. The fixing plate fixes the curved plate on the frame. The lower end surface of the curved plate is in close contact with the upper end surface of the conveyor belt. The curved plate is provided with a guiding arc surface, and the end of the guiding arc surface away from the fixing plate is bent towards the conveying direction of the conveyor belt. As the conveyor belt conveys, the guiding arc surface can guide the brazing rings close to the edge of the conveyor belt.

[0007] Further, the screening arc baffle includes a screening arc surface, and the screening arc surface is the outer side surface of the rounded corner at one end of the screening arc baffle close to the screening curved baffle.

[0008] Further, the screening arc baffle includes a screening device. The screening device is installed on the side of the screening arc baffle away from the screening curved baffle. The screening device includes an air nozzle, and the air nozzle faces one side edge of the conveyor belt where the brazing rings pass.

[0009] Further, the screening device includes a lifting device, and the lifting device can adjust the distance between the air nozzle and the upper end surface of the conveyor belt.

[0010] Further, it includes a moving component. The moving component includes a guiding member, a moving block, and a driving device. The guiding member is provided with a guiding groove, and the driving device drives the guiding member to be able to move along the guiding groove. The moving block is fixedly connected to the screening arc-shaped blocking member, and the screening arc-shaped blocking member can approach or move away from one side edge of the conveyor belt where the brazing ring passes.

[0011] Further, the feeding device includes a second motor and a feeding disk, and the feeding disk rotates so that the brazing ring contacting the side surface of the feeding disk can be separated from the conveyor belt.

[0012] Further, the projected area of the feeding disk on the upper end surface of the conveyor belt is larger than half of the area of the feeding disk.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model sorts the brazing rings through the screening curved baffle, and the screening arc-shaped blocking member screens the width of the brazing rings. If the brazing rings are adhered or buckled, they will fall out of the conveyor belt due to excessive width, and can perform preliminary screening on the width and diameter of the brazing rings to ensure that normal single brazing rings enter the visual inspection.

[0015] 2. The air nozzle in the screening device installed with the screening arc-shaped blocking member of the present utility model can blow out the brazing rings exceeding the normal height from the conveyor belt to prevent stacking and buckling, and can perform preliminary screening on the height of the brazing rings to ensure that normal single brazing rings enter the visual inspection. Description of the Drawings

[0016] Figure 1 is a schematic diagram of an embodiment.

[0017] Figure 2 is a top view of an embodiment.

[0018] Figure 3 is a side view of an embodiment.

[0019] Figure 4 is a schematic diagram in another direction of an embodiment.

[0020] Figure 5 is Figure 4 an enlarged view of part A in

[0021] Figure 6 is an application scenario diagram of an embodiment.

[0022] Reference numerals: 1, conveyor belt; 11, first motor; 12, synchronous roller; 13, tensioning roller; 14, belt; 2, screening curved baffle; 21, curved plate; 211, guiding arc surface; 22, fixing plate; 3, screening arc baffle; 31, screening arc surface; 4, screening and removing device; 41, air nozzle; 42, lifting device; 5, feeding device; 51, feeding disc; 52, second motor; 6, moving assembly; 61, guiding member; 611, guiding groove; 62, moving block; 63, driving device; 7, frame; 101, brazing ring; 102, picking device; 103, detection mechanism; 104, AGV cruise device; 105, industrial control computer. Detailed implementation manners

[0023] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings in this embodiment. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figure 1 , Figure 2 , Figure 3 , Figure 6 shown, this embodiment discloses a multi-stage screening mechanism. Figure 6 This is the detection device applied in this embodiment. The picking device 102 can pick up the brazing ring 101 and drop it into the multi-stage screening mechanism. The multi-stage screening mechanism is installed on the AGV cruise device 104. The industrial control computer 105 can control the multi-stage screening mechanism. The multi-stage screening mechanism includes a conveyor belt 1, a screening curved baffle 2, a screening arc baffle 3, a feeding device 5, and a moving assembly 6. The picking mechanism can pick up the brazing ring 101, and the brazing ring 101 falls onto the upper end surface of the conveyor belt 1. The conveyor belt 1 is driven by the first motor 11 to drive two synchronous rollers 12. The conveyor belt 1 is also provided with a tensioning roller 13 for tensioning the belt 14 of the conveyor belt 1. The position of the tensioning roller 13 is lower than that of the synchronous roller 12, and the tensioning roller 13 can tension the belt 14 of the conveyor belt 1 downward.

[0025] As Figure 1 , Figure 2 , Figure 3As shown in the figure, the screening curved baffle 2, the screening arc baffle 3, and the feeding device 5 are located above the conveyor belt 1 and arranged in the conveying direction of the conveyor belt 1. The screening curved baffle 2 includes a curved plate 21 and a fixing plate 22. The fixing plate 22 fixes the curved plate 21 to the frame 7. The lower end surface of the curved plate 21 is in close contact with the upper end surface of the conveyor belt 1. The curved plate 21 is provided with a guiding arc surface 211. One end of the guiding arc surface 211 away from the fixing plate 22 is bent towards the conveying direction of the conveyor belt 1. As the conveyor belt 1 conveys, the guiding arc surface 211 can guide the brazing ring 101 close to the edge of the conveyor belt 1. The screening curved baffle 2 has the function of gathering and arranging. The brazing rings 101 randomly arranged on the conveyor belt 1 will follow the movement of the conveyor belt 1. Along with the movement of the conveyor belt 1, the brazing rings 101 will follow the curvature of the guiding arc surface 211 of the curved plate 21 and gradually complete the gathering and arranging, ensuring that the brazing rings 101 entering the subsequent width screening are single ones.

[0026] As Figure 1 , Figure 2 , Figure 3 shown, the screening arc baffle 3 can screen the brazing rings 101 with qualified diameters and convey them to the feeding device 5. The screening arc baffle 3 includes a screening arc surface 31. The screening arc surface 31 is the outer side surface of the rounded corner at one end of the screening arc baffle 3 close to the screening curved baffle 2. The moving component 6 includes a guiding member 61, a moving block 62, and a second motor 52. The guiding member 61 is provided with a guiding groove 611. The driving device 63 drives the guiding member 61 to be able to move along the guiding groove 611. The moving block 62 is fixedly connected to the screening arc baffle 3. The screening arc baffle 3 can be close to or far away from one side edge of the conveyor belt 1 where the brazing rings 101 pass. The screening arc baffle 3 has the function of width screening. The screening arc baffle 3 is driven by the moving component 6. The control system determines the width reserved for the passage of the brazing rings 101 (that is, the distance between the screening arc baffle 3 and the edge of the conveyor belt 1) according to the model of the brazing rings 101 produced at the workstation. The single brazing ring 101 passing through the screening curved baffle 2 will contact the screening arc surface 31 of the screening arc baffle 3 and gradually pass through the width limiting plane of the screening arc baffle 3 as the conveyor belt 1 moves. If the brazing rings 101 are adhered or buckled, they will be removed from the conveyor belt 1 due to excessive width.

[0027] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the screening arc stopper 3 includes a screening device 4, which is installed on the side of the screening arc stopper 3 away from the screening bend stopper 2. The screening device 4 includes an air nozzle 41 and a lifting device 42. The air nozzle 41 faces the edge of one side of the conveyor belt 1 through which the brazing ring 101 passes. The screening device 4 has a height screening function. The control system is based on the model of the brazing ring 101 produced at the work station. The lifting device 42 can adjust the distance between the air nozzle 41 and the upper end surface of the conveyor belt 1. The lifting device 42 drives the internal micro screw to work to adjust the air nozzle 41. The height of the air nozzle 41 is used to limit the height of the brazing ring 101. The brazing ring 101 that has completed the width screening gradually enters the height screening process as the conveyor belt 1 moves. If the brazing ring 101 is overlapped or buckled, the abnormal height of the brazing ring 101 will be sensed by the sensing device provided in the air nozzle 41. The brazing ring 101 that exceeds the height standard will be blown out of the conveyor belt 1 by the air flow ejected by the air nozzle 41 and eliminated from the subsequent inspection process. If the brazing ring 101 is not overlapped or buckled, it will enter the loading stage normally.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown, the feeding device 5 feeds the brazing ring 101 to the detection mechanism 103, the first motor 11 and the feeding disc 51, the feeding disc 51 is rotated by the motor control, the projection area of ​​the feeding disc 51 on the upper end surface of the conveyor belt 1 is larger than half the area of ​​the feeding disc 51, and the rotation direction of the feeding disc 51 is counterclockwise when viewed from the top view. The feeding disc 51 rotates and the brazing ring 101 that contacts the side of the feeding disc 51 can be separated from the conveyor belt 1 and fall into the detection mechanism 103, and the lower end surface of the feeding disc 51 is close to the upper end surface of the conveyor belt 1. When the brazing ring 101 reaches the feeding disc 51, it will be blocked by the feeding disc 51 and then transferred to the detection mechanism 103 for visual inspection.

[0029] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A multi-stage screening device, characterized in that: The invention comprises a conveyor belt (1), a screening bend block (2), a screening arc block member (3), a feeding device (5), and a frame (7); the conveyor belt (1) is installed on the frame (7); the upper end surface of the conveyor belt (1) is used for conveying brazing rings (101); the screening bend block (2), the screening arc block member (3), and the feeding device (5) are located above the conveyor belt (1) and arranged in the conveying direction of the conveyor belt (1); the screening bend block (2) pushes the brazing ring (101) to one side of the upper end surface of the conveyor belt (1); the screening arc block member (3) can screen the brazing ring (101) with a qualified diameter and transmit it to the feeding device (5); and the feeding device (5) pushes the brazing ring (101) away from the conveyor belt (1).

2. A multi-stage screening device according to claim 1, characterized in that: The screening bend block (2) comprises a bend plate (21) and a fixed plate (22); the fixed plate (22) fixes the bend plate (21) to the frame (7); the lower end surface of the bend plate (21) is in close contact with the upper end surface of the conveyor belt (1); the bend plate (21) is provided with a guide arc surface (211); an end of the guide arc surface (211) away from the fixed plate (22) is bent toward the conveying direction of the conveyor belt (1); and as the conveyor belt (1) is conveyed, the guide arc surface (211) can guide the brazing ring (101) to approach the edge of the conveyor belt (1).

3. A multi-stage screening device according to claim 1, characterized in that: The screening arc stopper (3) comprises a screening arc surface (31), and the screening arc surface (31) is the outer side surface with a rounded corner at one end of the screening arc stopper (3) close to the screening bend stopper (2).

4. A multi-stage screening device according to claim 1, characterized in that: The screening arc stopper (3) comprises a screening device (4), wherein the screening device (4) is installed on a side of the screening arc stopper (3) away from the screening bend stopper (2), and the screening device (4) comprises an air nozzle (41), wherein the air nozzle (41) faces an edge of one side of the conveyor belt (1) through which the brazing ring (101) passes.

5. A multi-stage screening device according to claim 4, characterized in that: The screening device (4) comprises a lifting device (42), and the lifting device (42) is capable of adjusting the distance between the air nozzle (41) and the upper end surface of the conveyor belt (1).

6. A multi-stage screening device according to claim 1, characterized in that: The invention comprises a moving assembly (6), wherein the moving assembly (6) comprises a guide member (61), a moving block (62), and a driving device (63); the guide member (61) is provided with a guide groove (611); the driving device (63) drives the guide member (61) to move along the guide groove (611); the moving block (62) is fixedly connected to the screening arc stopper (3); and the screening arc stopper (3) can approach or move away from a side edge of the conveyor belt (1) through which the brazing ring (101) passes.

7. A multi-stage screening device according to claim 1, characterized in that: The feeding device (5) comprises a second motor (52) and a feeding disc (51), and the feeding disc (51) rotates so that the brazing ring (101) that contacts the side of the feeding disc (51) can be detached from the conveyor belt (1).

8. A multi-stage screening device according to claim 7, characterized in that: The projection area of ​​the upper end surface of the loading disc (51) on the conveyor belt (1) is larger than half the area of ​​the loading disc (51).

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